CN109732780B - Lifting type tail cover sealing device for concrete mixing transport vehicle and use method - Google Patents
Lifting type tail cover sealing device for concrete mixing transport vehicle and use method Download PDFInfo
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- CN109732780B CN109732780B CN201910195482.3A CN201910195482A CN109732780B CN 109732780 B CN109732780 B CN 109732780B CN 201910195482 A CN201910195482 A CN 201910195482A CN 109732780 B CN109732780 B CN 109732780B
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- 238000007789 sealing Methods 0.000 title claims abstract description 165
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 103
- 239000010720 hydraulic oil Substances 0.000 claims description 22
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 230000009471 action Effects 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The invention discloses a lifting type tail cover sealing device for a concrete mixer truck and a use method thereof, and belongs to the technical field of tail cover sealing devices of concrete mixer trucks. The rotary sealing assembly is arranged at the outlet flange of the stirring barrel, the sealing door is hinged with the rotary sealing assembly, and two ends of an executing piece in the opening and closing driving system are respectively hinged with the cross beam on the material guide piece and the sealing door of the feed hopper, so that the opening and closing of the sealing door are controlled. When the sealing door needs to be opened, the opening and closing driving system controls the sealing door to be opened upwards, forms a certain angle with the end face of the outlet flange, and performs unloading or cleaning in the cylinder; when the sealing door needs to be closed, the opening and closing driving system controls the sealing door to be closed and closely attached to the rotary sealing assembly. The rotary sealing assembly is arranged on the stirring barrel, so that the weight of the sealing door is greatly reduced while the sealing effect is ensured, the abrasion of the sealing part is reduced, and the use efficiency is improved. The sealing door is fully sealed, so that the evaporation of water in the materials in the cylinder is reduced, and the transportation quality is improved.
Description
Technical Field
The invention belongs to the technical field of tail cover sealing devices of concrete mixer trucks, and particularly relates to an upward type tail cover sealing device for a concrete mixer truck and a use method thereof.
Background
The outlet of a mixing drum of a traditional concrete mixing transport vehicle is mostly open, and the vehicle often causes pavement pollution due to leakage of materials such as concrete and the like because of poor road conditions in the driving process.
The related patent (CN 107344401A) describes a hollow shaft rotary sealing mode, which ensures the sealing effect, reduces the abrasion of sealing parts, improves the reliability of the concrete mixer truck and reduces the maintenance difficulty, but the components such as a rotary support and the like are arranged on a sealing door so that the weight of the sealing door is obviously increased, and hydraulic drive on two sides is required to provide larger driving force, thus the rotary sealing mode is also a test for a hydraulic system, and once the hydraulic system fails, related measures are not solved; meanwhile, more water in the materials in the stirring barrel is evaporated through the rotary support assembly, so that the transportation quality cannot be guaranteed.
Disclosure of Invention
The invention aims to solve the defects in the prior art, so that the lifting type tail cover sealing device for the concrete mixer truck and the using method thereof are provided, the opening and closing of the sealing door are controlled by a single opening and closing driving system, and the slewing bearing is arranged on the mixing drum, so that the sealing effect is achieved, and the weight of the sealing door can be reduced; the sealing door is arranged to be fully sealed, so that the evaporation of water in the material in the stirring cylinder is greatly reduced, and the working quality of the stirring vehicle is improved.
A lifting type tail cover sealing device for a concrete mixing transport vehicle comprises a mixing drum, a rotary sealing assembly, a tail cover assembly, a material guide assembly and an opening and closing driving system;
the tail part of the stirring cylinder is provided with an outlet flange, and the rotary sealing assembly is fixedly connected to the outlet flange;
The tail cover assembly comprises a sealing door and a feed hopper; the top of the sealing door is fixedly connected with a connecting rod; the feed hopper is fixedly connected to one side wall of the sealing door; the outer peripheral surface of the feed hopper is fixedly connected with a first connecting lug;
The guide assembly comprises a bracket and a guide piece, and the top end of the bracket is fixedly connected to the side wall of the guide piece; the bottom end of the bracket is fixedly connected to the tail base of the vehicle body; the top surface of the guide piece is provided with a guide groove, one side of the top end of the guide piece is fixedly connected with a cross beam, and the middle part of the upper surface of the cross beam is provided with a second connecting lug;
the opening and closing driving system comprises an executing piece and a control unit; the control unit is arranged on the tail base of the vehicle body; the control unit drives the executing piece to move;
The sealing door is attached to one side wall of the rotary sealing assembly, which is opposite to the outlet flange; one end of the connecting rod, which is far away from the sealing door, is rotationally connected to the top of the rotary sealing assembly; the rotary sealing assembly is attached in the guide chute; one end of the executing piece is rotationally connected with the first connecting lug; the other end of the executing piece is rotationally connected with the second connecting lug.
Further, the outlet flange, the rotary sealing assembly, the sealing door and the guide chute are coaxially arranged.
Further, the rotary sealing assembly comprises a rotary support, a 7-shaped base and a 7-shaped bushing; the slewing bearing is arranged between the base and the 7-shaped bushing; the inner ring of the rotary support is fixedly connected with the outlet flange; the outer ring of the rotary support is fixedly connected with the 7-shaped base; the top of the 7-shaped base is provided with a third connecting lug hinged with the connecting rod; the 7-shaped bushing is fixedly connected to the 7-shaped base.
Further, the longitudinal section of the 7-shaped bushing is of a semicircular structure, and the 7-shaped bushing is provided with an upper part and a lower part; the inner peripheral surface of the 7-shaped bushing is coplanar and attached to the inner peripheral surface of the outlet flange.
Further, a sealing gasket is arranged between the 7-shaped bushing at the lower part and the inner ring of the rotary support, and the sealing gasket is fixedly connected to the outer circumferential surface of the inner ring of the 7-shaped bushing.
Further, the outer peripheral surface of the 7-shaped base is attached to the groove surface of the guide groove; the outer end face of the 7-shaped bushing is attached to a side wall of the sealing door, which is opposite to the feeding hopper.
Further, the opening and closing driving system is a hydraulic control system, the executing piece is a hydraulic cylinder, and the control unit is a hydraulic control loop; the hydraulic control loop comprises a motor, a hydraulic pump, a first electromagnetic directional valve, a hydraulic lock and a first stop valve; an output shaft of the motor is connected with a rotating shaft of a hydraulic pump through a coupler, and an oil outlet of the hydraulic pump is communicated with an oil inlet of a first electromagnetic reversing valve; the first electromagnetic reversing valve is communicated with the hydraulic cylinder through a first oil pipe and a second oil pipe; the first oil pipe is communicated with an oil inlet of the hydraulic cylinder, the second oil pipe is communicated with an oil outlet of the hydraulic cylinder, and the first oil pipe and the second oil pipe are respectively provided with a first one-way throttle valve; the hydraulic lock is communicated with two working oil ports of the first electromagnetic directional valve in parallel through an oil pipe; the oil inlet of the first stop valve is communicated with the oil outlet of the hydraulic cylinder; an oil outlet of the first stop valve is communicated with an oil inlet of the hydraulic cylinder; an oil inlet of the overflow valve is communicated with the hydraulic pump through an oil pipe; and an oil outlet of the overflow valve is communicated with the oil tank through an oil pipe.
Further, the opening and closing driving system is an air pressure control system, the executing piece is an air cylinder, and the control unit is an air pressure control loop; the air pressure control loop comprises an air source device, an exhaust device, a second electromagnetic reversing valve and a second stop valve; the air source device and the exhaust device are respectively communicated with an air inlet and an air outlet of the second electromagnetic directional valve through air pipes; the second electromagnetic reversing valve is respectively communicated with the air cylinder through a first air pipe and a second air pipe; the first air pipe is communicated with the air inlet of the air cylinder, the second air pipe is communicated with the air outlet of the air cylinder, and the first air pipe and the second air pipe are provided with second one-way throttle valves; the air outlet of the second stop valve is communicated with the air inlet of the air cylinder through an air pipe; and an air inlet of the second stop valve is communicated with an air outlet of the air cylinder through an air pipe.
The invention also discloses a use method of the lifting type tail cover sealing device for the concrete mixer truck, which comprises the following steps:
step one: when the unloading or in-cylinder cleaning work is performed, the motor is started to drive the hydraulic pump to rotate to supply oil to the hydraulic control loop, meanwhile, the hydraulic lock is reset, and the first electromagnetic reversing valve controls hydraulic oil to flow to the first oil pipe;
Step two: a first one-way throttle valve on the first oil pipe regulates the speed of hydraulic oil in the pipeline, and the hydraulic oil enters a left oil cavity of the hydraulic cylinder; hydraulic oil in the right oil cavity of the hydraulic cylinder flows into the oil tank;
step three: the hydraulic rod of the hydraulic cylinder extends outwards under the action of oil pressure, and meanwhile, the hydraulic cylinder pushes the sealing door to rotate upwards by taking the third connecting lug as the center;
step four: when the sealing door rotates to the corresponding position, the hydraulic lock locks the loop, and the motor stops working until the discharging and cleaning in the cylinder are completed;
Step five: after the cleaning work is finished, the motor is started again, the hydraulic lock is reset, and hydraulic oil enters the second oil pipe under the control of the first electromagnetic reversing valve; then the hydraulic oil enters a right oil cavity of the hydraulic cylinder through a first one-way throttle valve on the second oil pipe for speed regulation; hydraulic oil in the left oil cavity of the hydraulic cylinder flows into the oil tank;
Step six: the piston rod of the hydraulic cylinder retracts, the sealing door is driven to rotate downwards by taking the third connecting lug as the center, and when the sealing door is tightly attached to the outer end surface of the 7-shaped bushing, the hydraulic lock locks the loop, and meanwhile, the motor is closed;
if the hydraulic control system is in locking failure, the sealing door is opened through external force after the oil pressure in the first stop valve regulating loop is opened.
The invention also discloses a using method of the lifting type tail cover sealing device for the concrete mixer truck, which comprises the following steps:
step one: when unloading or cleaning in the cylinder, firstly, starting the air source device, and enabling compressed air to enter the first air pipe by changing the air flow direction through the second electromagnetic directional valve;
Step two: the compressed air enters a left cavity of the air cylinder through speed regulation by a second one-way throttle valve in the first air pipe; the gas in the right cavity of the cylinder is discharged to the atmosphere through an exhaust device;
Step three: the piston rod of the air cylinder is outwards extended under the action of compressed gas, and meanwhile, the air cylinder pushes the sealing door to rotate upwards by taking the third connecting lug as the center;
step four: when the sealing door rotates to the corresponding position, the air source device stops supplying air, and the sealing door stops at the position;
Step five: when the unloading or cleaning work in the cylinder is finished, the air source device is started again, compressed air is commutated through the second electromagnetic directional valve and enters the right cavity of the air cylinder after being regulated through the second one-way throttle valve in the second air pipe; the gas in the left cavity of the cylinder is discharged to the atmosphere through an exhaust device;
step six: the piston rod of the air cylinder is retracted, the sealing door is driven to rotate downwards by taking the third connecting lug as the center, after the sealing door is tightly attached to the outer end face of the 7-shaped bushing, the air cylinder is locked through a bolt in the air cylinder, and meanwhile, the air source device stops working;
If the air pressure locking fault is met, the sealing door is opened through external force after the air pressure in the second stop valve regulating loop is opened.
Compared with the prior art, the invention can obtain the following technical effects:
(1) The top surface of guide spare has seted up the baffle box, and the baffle box closely laminates with 7 outer peripheral face of shape base, and the baffle box provides installation face and supporting point for 7 shape base, reduces the holding power of the gyration seal assembly that the churn bore, prevents that the gyration seal assembly from appearing the skew between influenced by gravity and the export flange, simultaneously greatly reduced the maintenance degree of difficulty, effectively guaranteed sealed effect, improved the transportation efficiency of trucd mixer.
(2) The 7 shape base and 7 shape bush constitution casing protection gyration supports, and the longitudinal section of 7 shape bush is semi-circular structure, and 7 shape bush is equipped with two from top to bottom, can selectively change when wearing and tearing are uneven, has improved 7 shape bush's rate of utilization, effectively practices thrift manufacturing cost. The inner peripheral surface of the 7-shaped bushing is coplanar and attached to the inner peripheral surface of the outlet flange, so that the excellent working environment of the rotary support is effectively ensured.
(3) The outer end face of the 7-shaped bushing is attached to one side wall of the sealing door, which is opposite to the feeding hopper, so that the full sealing of the concrete in the mixing drum is realized, the water loss is greatly reduced, and the transportation quality is improved.
(4) A cross beam is fixedly connected to one side of the top end of the material guide member, a second connecting lug is arranged in the middle of the upper surface of the cross beam, a rotary supporting point is provided for the execution member by the second connecting lug, a third connecting lug is fixedly connected to the top of the 7-shaped base, another rotary supporting point is provided for the execution member by the third connecting lug, and the sealing door is closed under the combined action of self swing of the execution member, acting force and self gravity of the sealing door; when the mixing drum needs to be opened, the mixing drum can be opened by swinging and acting force of the executing piece and then lifting upwards, and the sealing door is only connected with the feeding hopper, so that the acting force of the executing piece is greatly reduced, the bearing capacity of the 7-shaped base is reduced, and the transportation efficiency of the mixing truck is improved.
Drawings
FIG. 1 is an exploded view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the present invention;
FIG. 3 is view A of FIG. 2 in accordance with the present invention;
FIG. 4 is a cross-sectional view of the rotary seal assembly of the present invention;
FIG. 5 is a control unit of the hydraulic control system;
fig. 6 is a control unit of the air pressure control system.
In the figure: 1. the device comprises a stirring cylinder, 2, an outlet flange, 3, a sealing door, 4, a feeding hopper, 41, a first connecting lug, 5, a connecting rod, 6, a bracket, 7, a guide piece, 71, a guide groove, 8, a cross beam, 81, a second connecting lug, 9, an executing piece, 10, a control unit, 11, a rotary support, 12, a 7-shaped base, 121, a third connecting lug, 13, a 7-shaped bushing, 14, a sealing gasket, 15, a motor, 16, a hydraulic pump, 17, a first electromagnetic directional valve, 18, a hydraulic lock, 19, a first stop valve, 20, an overflow valve, 21, a first one-way throttle valve, 22, an air source device, 23, an exhaust device, 24, a second electromagnetic directional valve, 25, a second stop valve, 26 and a second one-way throttle valve.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
A lifting type tail cover sealing device for a concrete mixing transport vehicle comprises a mixing drum 1, a rotary sealing assembly, a tail cover assembly, a material guide assembly and an opening and closing driving system;
the tail part of the stirring barrel 1 is provided with an outlet flange 2, oval holes which are convenient to install are uniformly formed in the outlet flange 2, and a rotary sealing assembly is fixedly connected to the outlet flange 2 in order to reduce the weight of the sealing door 3 and ensure the sealing effect;
The tail cap assembly comprises a sealing door 3 and a feed hopper 4; a connecting rod 5 is fixed at the top of the sealing door 3; the feed hopper 4 is welded and fixed on the rear side wall of the sealing door 3; the outer peripheral surface of the feed hopper 4 is fixedly welded with a first connecting lug 41;
The guide assembly comprises a bracket 6 and a guide piece 7, wherein the top end of the bracket 6 is welded and fixed on the side wall of the guide piece 7, and the bottom end of the bracket 6 is welded and fixed on the tail base of the vehicle body; a guide groove 71 which is convenient for discharging concrete is formed in the top surface of the guide piece 7, a cross beam 8 is welded and fixed on the rear side of the top end of the guide piece 7, and a second connecting lug 81 is arranged in the middle of the upper surface of the cross beam 8;
The opening and closing driving system comprises an executing piece 9 and a control unit 10; the control unit 10 is arranged on the tail base of the vehicle body; the control unit 10 drives the actuator 9 to move;
The sealing door 3 is closely laminated with one side of gyration seal assembly back to export flange 2, and the one end that sealing door 3 was kept away from to connecting rod 5 is rotated through the round pin axle and is connected at gyration seal assembly's top, and gyration seal assembly laminating is in baffle box 71, and baffle box 71 provides locating surface and supporting point for gyration seal assembly, prevents that gyration seal assembly from appearing the skew between influenced by gravity and export flange 2, has effectively guaranteed sealed effect. One end of the actuator 9 is rotatably connected to the first connecting lug 41 through a pin, and the other end of the actuator 9 is rotatably connected to the second connecting lug 81 through a pin. In the working process, when the mixing drum 1 needs to be sealed, under the combined action of self gravity of the sealing door 3 and the pulling of the actuating piece 9 on the sealing door 3, the inner side surface of the sealing door 3 is tightly attached to the outer end surface of the rotary sealing assembly, so that static sealing is realized; when the stirring cylinder 1 needs to be opened, the actuating piece 9 pushes the sealing door 3, so that the sealing door 3 lifts up by taking the top of the rotary sealing assembly as the center, and when the inner side surface of the sealing door 3 forms a certain angle with the outlet flange 2, the sealing door can be discharged or cleaned in the cylinder.
Example 2
A lifting type tail cover sealing device for a concrete mixing transport vehicle comprises a mixing drum 1, a rotary sealing assembly, a tail cover assembly, a material guide assembly and an opening and closing driving system;
The tail part of the stirring cylinder 1 is provided with an outlet flange 2, and a rotary sealing assembly is fixedly connected to the outlet flange 2 in order to reduce the weight of the sealing door 3 and ensure the sealing effect;
The tail cap assembly comprises a sealing door 3 and a feed hopper 4; a connecting rod 5 is fixed at the top of the sealing door 3; the feed hopper 4 is welded and fixed on the rear side wall of the sealing door 3; the outer peripheral surface of the feed hopper 4 is fixedly welded with a first connecting lug 41;
The guide assembly comprises a bracket 6 and a guide piece 7, wherein the top end of the bracket 6 is welded and fixed on the side wall of the guide piece 7, and the bottom end of the bracket 6 is welded and fixed on the tail base of the vehicle body; a guide groove 71 which is convenient for discharging concrete is formed in the top surface of the guide piece 7, a cross beam 8 is welded and fixed on the rear side of the top end of the guide piece 7, and a second connecting lug 81 is arranged in the middle of the upper surface of the cross beam 8;
The opening and closing driving system comprises an executing piece 9 and a control unit 10; the control unit 10 is arranged on the tail base of the vehicle body; the control unit 10 drives the actuator 9 to move;
The sealing door 3 is closely laminated with one side of gyration seal assembly back to export flange 2, and the one end that sealing door 3 was kept away from to connecting rod 5 is rotated through the round pin axle and is connected at gyration seal assembly's top, and gyration seal assembly laminating is in baffle box 71, and baffle box 71 provides locating surface and supporting point for gyration seal assembly, prevents that gyration seal assembly from appearing the skew between influenced by gravity and export flange 2, has effectively guaranteed sealed effect. One end of the actuator 9 is rotatably connected to the first connecting lug 41 through a pin, and the other end of the actuator 9 is rotatably connected to the second connecting lug 81 through a pin. In the working process, when the mixing drum 1 needs to be sealed, under the combined action of self gravity of the sealing door 3 and the pulling of the actuating piece 9 on the sealing door 3, the inner side surface of the sealing door 3 is tightly attached to the outer end surface of the rotary sealing assembly, so that static sealing is realized; when the stirring cylinder 1 needs to be opened, the actuating piece 9 pushes the sealing door 3, so that the sealing door 3 lifts up by taking the top of the rotary sealing assembly as the center, and when the inner side surface of the sealing door 3 forms a certain angle with the outlet flange 2, the sealing door can be discharged or cleaned in the cylinder.
In the present embodiment, it is preferable that the outlet flange 2, the rotary seal assembly, the seal door 3 and the guide groove 71 are coaxially arranged in order to secure excellent sealing effect and structural performance.
In the present embodiment, it is preferable that the rotary seal assembly includes a light and thin type rotary support 11, a 7-shaped base 12, and a 7-shaped bushing 13. The 7-shaped base 12 and the 7-shaped bushing 13 are diagonally opposite and are arranged, the outer ring of the 7-shaped bushing is fixed on the outer ring of the 7-shaped base 12 through bolts, the rotary support 11 is arranged between the 7-shaped base 12 and the 7-shaped bushing 13, the shell body formed by the 7-shaped base 12 and the 7-shaped bushing effectively protects the rotary support 11, the inner ring of the rotary support 11 and the outlet flange 2 are fixed into a whole through bolts, and the outer ring of the rotary support 11 and the 7-shaped base 12 are fixed into a whole through bolts. The top of the outer peripheral surface of the 7-shaped base 12 is provided with a third connecting lug 121 hinged with the connecting rod 5, and the sealing door 3 rotates by a certain angle with the third connecting lug 121 as the center, so that the opening and closing functions are realized. The light and thin sealing member is adopted, so that the abrasion of the sealing member can be greatly reduced, and the maintenance frequency is effectively reduced.
In this embodiment, preferably, the longitudinal section of the 7-shaped bushing 13 is in a semicircular structure, and the 7-shaped bushing 13 is provided with an upper part and a lower part, so that the 7-shaped bushing can be selectively replaced when the wear is uneven, thereby improving the utilization rate of the 7-shaped bushing and saving certain material cost. The inner peripheral surface of the 7-shaped bushing 13 is coplanar and attached to the inner peripheral surface of the outlet flange 2, so that the excellent working environment of the rotary support 11 is effectively ensured.
In this embodiment, it is preferable that the 7-shaped bush 13 does not rotate with the mixing drum 1, and only the lower 7-shaped bush 13 is in contact with the concrete during the discharging process, and only the gasket 14 is provided between the lower 7-shaped bush 13 and the inner ring of the rotary support 11, so that the gasket 14 is fixedly connected to the outer circumferential surface of the inner ring of the 7-shaped bush 13 to prevent the gasket 14 from deviating to affect the sealing quality.
In the present embodiment, it is preferable that the outer peripheral surface of the 7-shaped base 12 is closely fitted to the groove surface of the guide groove 71 for the convenience of mounting the 7-shaped base 12 and reducing the load bearing of the outlet flange 2. The outer end face of the 7-shaped bushing 13 is attached to one side wall of the sealing door 3, which is opposite to the feeding hopper 4, so that sealing is realized on concrete in the mixing drum 1, the water loss is greatly reduced, and the transportation quality is improved.
In this embodiment, preferably, the opening and closing driving system is a hydraulic control system, the executing member 9 is a hydraulic cylinder, and the control unit 10 is a hydraulic control circuit; the hydraulic control circuit comprises an electric motor 15, a hydraulic pump 16, a first electromagnetic directional valve 17, a hydraulic lock 18, a first shut-off valve 19 and a spill valve 20. An output shaft of the motor 15 is connected with a rotating shaft of the hydraulic pump 16 through a coupler to provide swing power for the hydraulic cylinder, and hydraulic oil is commutated through a first electromagnetic directional valve 17 through an oil outlet of the hydraulic pump 16; the first electromagnetic directional valve 17 is communicated with the hydraulic cylinder through a first oil pipe and a second oil pipe; the first oil pipe is communicated with an oil inlet of the hydraulic cylinder, the second oil pipe is communicated with an oil outlet of the hydraulic cylinder, the first oil pipe and the second oil pipe are respectively provided with a first one-way throttle valve 21, and hydraulic oil is subjected to speed regulation through the first one-way throttle valves 21 of the first oil pipe and then enters left/right side oil cavities of the hydraulic cylinder to control the extension/retraction of the hydraulic rod. The hydraulic lock 18 is connected in parallel with the two working ports of the first electromagnetic directional valve 17 through oil pipes, and when the hydraulic rod extends/retracts to the corresponding position, the hydraulic lock 18 locks the oil pressure in the loop, thereby maintaining the open/close state of the sealing door 3. The oil inlet of the first stop valve 19 is communicated with the oil outlet of the hydraulic cylinder; the oil outlet of the first stop valve 19 is communicated with the oil inlet of the hydraulic cylinder, the first stop valve 19 is always in a closed state, when a hydraulic circuit has a locking fault, the first stop valve 19 is opened to adjust the hydraulic pressure in the circuit, and the sealing door 3 can be opened through external force. The oil inlet and the oil outlet of the overflow valve 20 are respectively communicated with the hydraulic pump 16 and the oil tank through oil pipes.
Example 3
The invention relates to a method for using a lifting type tail cover sealing device for a concrete mixer truck when an opening and closing driving system is used as a hydraulic control system, which comprises the following steps:
Step one: during unloading or cleaning in the cylinder, the motor 15 starts to drive the hydraulic pump 16 to rotate to supply oil to the hydraulic control circuit, meanwhile, the hydraulic lock 18 is reset, and the first electromagnetic directional valve 17 controls hydraulic oil to flow to the first oil pipe;
Step two: a first one-way throttle valve 21 on the first oil pipe regulates the speed of the hydraulic oil in the pipeline, and the hydraulic oil enters the left oil cavity of the hydraulic cylinder; hydraulic oil in the right oil cavity of the hydraulic cylinder flows into the oil tank;
step three: the hydraulic rod of the hydraulic cylinder extends outwards under the action of oil pressure, and simultaneously the hydraulic cylinder pushes the sealing door 3 to rotate upwards by taking the first connecting lug 41 as the center;
Step four: when the sealing door 3 rotates to the corresponding position, the hydraulic lock 18 locks the loop, the motor 15 stops working until the discharging and cleaning in the cylinder are completed;
Step five: after the cleaning work is finished, the motor 15 is started again, the hydraulic lock 18 is reset, and hydraulic oil enters the second oil pipe under the control of the first electromagnetic directional valve 17; then the hydraulic oil enters a right oil cavity of the hydraulic cylinder through a first one-way throttle valve 21 on the second oil pipe for speed regulation; hydraulic oil in the left oil cavity of the hydraulic cylinder flows into the oil tank;
Step six: the piston rod of the hydraulic cylinder is retracted, the sealing door 3 is driven to rotate downwards by taking the first connecting lug 41 as the center, after the sealing door 3 is tightly attached to the outer end surface of the 7-shaped bushing 13, the hydraulic lock 18 locks a loop, and meanwhile, the motor 15 is closed;
if a hydraulic control system locking fault is encountered, the sealing door 3 is opened by external force after the first stop valve 19 is opened to regulate the oil pressure in the loop.
Example 4
Unlike embodiment 2, the opening and closing driving system is an air pressure control system, the actuator 9 is an air cylinder, and the control unit 10 is an air pressure control loop; the air pressure control loop comprises an air source device 22, an exhaust device 23, a second electromagnetic directional valve 24 and a second stop valve 25. The air source device 22 provides power for the air cylinder, and the air exhaust device 23 is respectively communicated with an air inlet and an air outlet of the second electromagnetic directional valve 24 through air pipes. The second electromagnetic directional valve 24 communicates with the cylinder through the first air pipe and the second air pipe, respectively, and the inflow direction of the compressed gas is controlled by the second electromagnetic directional valve 24. The first air pipe is communicated with the air inlet of the air cylinder, the second air pipe is communicated with the air outlet of the air cylinder, the first air pipe and the second air pipe are respectively provided with a second one-way throttle valve 26, speed regulation is carried out through the second one-way throttle valves 26, the extension/retraction of the piston rod is completed, and then the opening/closing of the sealing door 3 is controlled. The air outlet of the second stop valve 25 is communicated with the air inlet of the air cylinder through an air pipe; the air inlet of the second stop valve 25 is communicated with the air outlet of the air cylinder through an air pipe, the second stop valve 25 is always in a closed state, when the air pressure loop has a locking fault, the second stop valve 25 is opened to adjust the air pressure in the loop, and the sealing door 3 can be opened through external force.
Example 5
The invention relates to a method for using a lifting type tail cover sealing device for a concrete mixer truck when an opening and closing driving system is an air pressure control system, which comprises the following steps:
step one: during unloading or cleaning in the cylinder, firstly, the air source device 22 is started, and compressed air changes the air flow direction through the second electromagnetic directional valve 24 and enters the first air pipe;
Step two: the compressed air enters the left cavity of the cylinder through the speed regulation of the second one-way throttle valve 26 in the first air pipe; the gas in the right cavity of the cylinder is discharged to the atmosphere through the exhaust device 23;
Step three: the piston rod of the air cylinder is extended under the action of compressed air, and simultaneously the air cylinder pushes the sealing door 3 to rotate upwards by taking the first connecting lug 41 as the center;
Step four: when the sealing door 3 rotates to the corresponding position, the air supply device 22 stops supplying air, and the sealing door 3 stops at the position;
Step five: when the unloading or cleaning work in the cylinder is finished, the air source device 22 is started again, compressed air is commutated through the second electromagnetic directional valve 24, and enters the right cavity of the air cylinder after being regulated through the second one-way throttle valve 26 in the second air pipe; the gas in the left cavity of the cylinder is discharged to the atmosphere through an exhaust device 23;
Step six: the piston rod of the air cylinder is retracted, and simultaneously the sealing door 3 is driven to rotate downwards by taking the first connecting lug 41 as the center, after the sealing door 3 is tightly attached to the outer end surface of the 7-shaped bushing 13, the air cylinder is locked by a bolt in the air cylinder, and meanwhile, the air source device 22 stops working;
if the air pressure locking fault is encountered, the sealing door 3 is opened by external force after the air pressure in the loop is regulated by opening the second stop valve 25.
The opening and closing driving system can adopt the electric push rod device to replace the air pressure control system, and realize the opening and closing operation of the device through the swinging of the electric push rod device body and the telescopic movement of the push rod.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The lifting type tail cover sealing device for the concrete mixing transport vehicle is characterized by comprising a mixing drum (1), a rotary sealing assembly, a tail cover assembly, a material guiding assembly and an opening and closing driving system;
the tail part of the stirring barrel (1) is provided with an outlet flange (2), and the rotary sealing assembly is fixedly connected to the outlet flange (2);
the tail cover assembly comprises a sealing door (3) and a feed hopper (4); the top of the sealing door (3) is fixedly connected with a connecting rod (5); the feed hopper (4) is fixedly connected to one side wall of the sealing door (3); the outer peripheral surface of the feed hopper (4) is fixedly connected with a first connecting lug (41);
The guide assembly comprises a bracket (6) and a guide piece (7), and the top end of the bracket (6) is fixedly connected to the side wall of the guide piece (7); the bottom end of the bracket (6) is fixedly connected to the base at the tail of the vehicle body; a guide groove (71) is formed in the top surface of the guide piece (7), a cross beam (8) is fixedly connected to one side of the top end of the guide piece (7), and a second connecting lug (81) is arranged in the middle of the upper surface of the cross beam (8);
The opening and closing driving system comprises an executing piece (9) and a control unit (10); the control unit (10) is arranged on the tail base of the vehicle body; the control unit (10) drives the executing piece (9) to move;
The sealing door (3) is attached to one side wall of the rotary sealing assembly, which is opposite to the outlet flange (2); one end of the connecting rod (5) far away from the sealing door (3) is rotatably connected to the top of the rotary sealing assembly; the rotary sealing assembly is attached in the guide chute (71); one end of the executing piece (9) is rotationally connected with the first connecting lug (41); the other end of the executing piece (9) is rotationally connected with a second connecting lug (81);
The outlet flange (2), the rotary sealing assembly, the sealing door (3) and the guide chute (71) are coaxially arranged;
The rotary sealing assembly comprises a rotary support (11), a 7-shaped base (12) and a 7-shaped bushing (13); the slewing bearing (11) is arranged between the 7-shaped base (12) and the 7-shaped bushing (13); the inner ring of the rotary support (11) is fixedly connected with the outlet flange (2); the outer ring of the rotary support (11) is fixedly connected with the 7-shaped base (12); a third connecting lug (121) hinged with the connecting rod (5) is arranged at the top of the 7-shaped base (12); the 7-shaped bushing (13) is fixedly connected to the 7-shaped base (12);
The longitudinal section of the 7-shaped bushing (13) is of a semicircular structure, and the 7-shaped bushing (13) is provided with an upper part and a lower part; the inner peripheral surface of the 7-shaped bushing (13) is coplanar and attached to the inner peripheral surface of the outlet flange (2);
A sealing gasket (14) is arranged between the 7-shaped bushing (13) at the lower part and the inner ring of the rotary support (11), and the sealing gasket (14) is fixedly connected to the outer circumferential surface of the inner ring of the 7-shaped bushing (13);
The outer peripheral surface of the 7-shaped base (12) is attached to the groove surface of the guide groove (71); the outer end face of the 7-shaped bushing (13) is attached to one side wall of the sealing door (3) back to the feeding hopper (4).
2. The lifting type tail cap sealing device for a concrete mixer truck according to claim 1, wherein the opening and closing driving system is a hydraulic control system, the executing piece (9) is a hydraulic cylinder, and the control unit (10) is a hydraulic control loop; the hydraulic control loop comprises a motor (15), a hydraulic pump (16), a first electromagnetic reversing valve (17), a hydraulic lock (18), a first stop valve (19) and an overflow valve (20); an output shaft of the motor (15) is connected with a rotating shaft of the hydraulic pump (16) through a coupler, and an oil outlet of the hydraulic pump (16) is communicated with an oil inlet of the first electromagnetic directional valve (17); the first electromagnetic reversing valve (17) is communicated with the hydraulic cylinder through a first oil pipe and a second oil pipe; the first oil pipe is communicated with an oil inlet of the hydraulic cylinder, the second oil pipe is communicated with an oil outlet of the hydraulic cylinder, and the first oil pipe and the second oil pipe are respectively provided with a first one-way throttle valve (21); the hydraulic lock (18) is communicated with two working oil ports of the first electromagnetic directional valve (17) in parallel through an oil pipe; the oil inlet of the first stop valve (19) is communicated with the oil outlet of the hydraulic cylinder; an oil outlet of the first stop valve (19) is communicated with an oil inlet of the hydraulic cylinder; an oil inlet of the overflow valve (20) is communicated with the hydraulic pump through an oil pipe; an oil outlet of the overflow valve (20) is communicated with the oil tank through an oil pipe.
3. The lifting type tail cap sealing device for a concrete mixer truck according to claim 1, wherein the opening and closing driving system is an air pressure control loop, the executing piece (9) is an air cylinder, and the control unit (10) is an air pressure control system; the air pressure control loop comprises an air source device (22), an exhaust device (23), a second electromagnetic directional valve (24) and a second stop valve (25); the air source device (22) and the exhaust device (23) are respectively communicated with an air inlet and an air outlet of the second electromagnetic directional valve (24) through air pipes; the second electromagnetic reversing valve (24) is respectively communicated with the air cylinder through a first air pipe and a second air pipe; the first air pipe is communicated with the air inlet of the air cylinder, the second air pipe is communicated with the air outlet of the air cylinder, and the first air pipe and the second air pipe are both provided with a second one-way throttle valve (26); the air outlet of the second stop valve (25) is communicated with the air inlet of the air cylinder through an air pipe; an air inlet of the second stop valve (25) is communicated with an air outlet of the air cylinder through an air pipe.
4. The method of using a lifting tail cap sealing device for a concrete mixer truck according to claim 2, comprising the steps of:
step one: when the unloading or in-cylinder cleaning work is performed, the motor (15) starts to drive the hydraulic pump (16) to rotate to supply oil to the hydraulic control loop, meanwhile, the hydraulic lock (18) is reset, and the first electromagnetic reversing valve (17) controls hydraulic oil to flow to the first oil pipe;
step two: a first one-way throttle valve (21) on the first oil pipe regulates the speed of hydraulic oil in the pipeline, and the hydraulic oil enters a left oil cavity of the hydraulic cylinder; hydraulic oil in the right oil cavity of the hydraulic cylinder flows into the oil tank;
Step three: the hydraulic rod of the hydraulic cylinder extends outwards under the action of oil pressure, and simultaneously the hydraulic cylinder pushes the sealing door (3) to rotate upwards by taking the third connecting lug (121) as the center;
Step four: when the sealing door (3) rotates to the corresponding position, the hydraulic lock (18) locks the loop, and the motor (15) stops working until the discharging and cleaning in the cylinder are completed;
Step five: after the cleaning work is finished, the motor (15) is started again, the hydraulic lock (18) is reset, and hydraulic oil enters the second oil pipe under the control of the first electromagnetic directional valve (17); then the oil enters a right oil cavity of the hydraulic cylinder through a first one-way throttle valve (21) on the second oil pipe for speed regulation; hydraulic oil in the left oil cavity of the hydraulic cylinder flows into the oil tank;
step six: the piston rod of the hydraulic cylinder is retracted, the sealing door (3) is driven to rotate downwards by taking the third connecting lug (121) as the center, and when the sealing door (3) is tightly attached to the outer end surface of the 7-shaped bushing (13), the hydraulic lock (18) locks the loop, and meanwhile, the motor (15) is closed;
If the hydraulic control system is in locking failure, the sealing door (3) is opened through external force after the oil pressure in the first stop valve (19) regulating loop is opened.
5. A method of using a lifting tail cap sealing device for a concrete mixer truck according to claim 3, comprising the steps of:
Step one: when unloading or cleaning in the cylinder, firstly, the air source device (22) is started, and compressed air changes the air flow direction through the second electromagnetic directional valve (24) and enters the first air pipe;
step two: the compressed air enters a left cavity of the air cylinder through speed regulation by a second one-way throttle valve (26) in the first air pipe; the gas in the right cavity of the cylinder is discharged to the atmosphere through an exhaust device (23);
step three: the piston rod of the air cylinder is outwards extended under the action of compressed gas, and meanwhile, the air cylinder pushes the sealing door (3) to rotate upwards by taking the third connecting lug (121) as the center;
step four: when the sealing door (3) rotates to the corresponding position, the air source device (22) stops supplying air, and the sealing door (3) stops at the position;
Step five: when the unloading or cleaning work in the cylinder is finished, the air source device (22) is started again, compressed air is commutated through the second electromagnetic directional valve (24), and enters the right cavity of the air cylinder after being regulated through the second one-way throttle valve (26) in the second air pipe; the gas in the left cavity of the cylinder is discharged to the atmosphere through an exhaust device (23);
Step six: the piston rod of the air cylinder is retracted, the sealing door (3) is driven to rotate downwards by taking the third connecting lug (121) as the center, when the sealing door (3) is tightly attached to the outer end surface of the 7-shaped bushing (13), the air cylinder is locked through a bolt in the air cylinder, and meanwhile, the air source device (22) stops working;
if the air pressure locking fault is encountered, the sealing door (3) is opened by external force after the air pressure in the second stop valve (25) regulating loop is opened.
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| CN201910195482.3A CN109732780B (en) | 2019-03-15 | 2019-03-15 | Lifting type tail cover sealing device for concrete mixing transport vehicle and use method |
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| CN201910195482.3A CN109732780B (en) | 2019-03-15 | 2019-03-15 | Lifting type tail cover sealing device for concrete mixing transport vehicle and use method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110815574B (en) * | 2019-11-08 | 2024-08-16 | 芜湖中集瑞江汽车有限公司 | Agitating lorry |
| CN111204274A (en) * | 2020-03-22 | 2020-05-29 | 山东泰开汽车制造有限公司 | Vehicle device based on sealing state, transportation method and application thereof |
| CN111805745B (en) * | 2020-07-17 | 2021-07-09 | 安徽工业大学 | Movable tool for sealing device of tail cover of stirring vehicle |
| CN111873181A (en) * | 2020-08-19 | 2020-11-03 | 安徽星马专用汽车有限公司 | Follow-up self-compensation type concrete mixer tail cover sealing device and implementation method |
| CN113386258B (en) * | 2021-07-09 | 2022-05-31 | 杭州江河机电装备工程有限公司 | Concrete mixer feeding device with telescopic rotary sealing interface |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029940A (en) * | 2010-10-30 | 2011-04-27 | 盛富春 | Concrete mixing transportation truck for realizing rotary sealing of feed opening and discharge opening of mixing drum |
| CN102220965A (en) * | 2011-06-14 | 2011-10-19 | 濮阳市百福瑞德石油科技有限公司 | Electric control safety system for slurry pump |
| CN102310483A (en) * | 2011-09-27 | 2012-01-11 | 三一重工股份有限公司 | Device for sealing material of mixing drum and agitating truck |
| CN205576791U (en) * | 2016-04-23 | 2016-09-14 | 北京昌茂宏业科技有限公司 | Hydraulic pressure an organic whole post of holding up traffic |
| CN210233492U (en) * | 2019-03-15 | 2020-04-03 | 安徽星马专用汽车有限公司 | Upward-type tail cover sealing device for concrete mixing transport vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101066261B1 (en) * | 2008-12-30 | 2011-09-20 | 최익현 | A movable agitation system for scarlet color concrete |
| CN202558093U (en) * | 2012-05-17 | 2012-11-28 | 唐山亚特专用汽车有限公司 | Super-large-volume concrete mixing truck |
| CN103470559B (en) * | 2013-09-13 | 2016-03-23 | 三一汽车制造有限公司 | A kind of concrete mixing and transporting car |
| CN107344401B (en) * | 2017-08-29 | 2019-03-29 | 烟台盛利达工程技术有限公司 | The concrete mixing and transporting car of hollow shaft rotary sealing |
-
2019
- 2019-03-15 CN CN201910195482.3A patent/CN109732780B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029940A (en) * | 2010-10-30 | 2011-04-27 | 盛富春 | Concrete mixing transportation truck for realizing rotary sealing of feed opening and discharge opening of mixing drum |
| CN102220965A (en) * | 2011-06-14 | 2011-10-19 | 濮阳市百福瑞德石油科技有限公司 | Electric control safety system for slurry pump |
| CN102310483A (en) * | 2011-09-27 | 2012-01-11 | 三一重工股份有限公司 | Device for sealing material of mixing drum and agitating truck |
| CN205576791U (en) * | 2016-04-23 | 2016-09-14 | 北京昌茂宏业科技有限公司 | Hydraulic pressure an organic whole post of holding up traffic |
| CN210233492U (en) * | 2019-03-15 | 2020-04-03 | 安徽星马专用汽车有限公司 | Upward-type tail cover sealing device for concrete mixing transport vehicle |
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