CN214570512U - Fork rotary mechanism hydraulic system and three-way forklift thereof - Google Patents
Fork rotary mechanism hydraulic system and three-way forklift thereof Download PDFInfo
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- CN214570512U CN214570512U CN202120734882.XU CN202120734882U CN214570512U CN 214570512 U CN214570512 U CN 214570512U CN 202120734882 U CN202120734882 U CN 202120734882U CN 214570512 U CN214570512 U CN 214570512U
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Abstract
The utility model discloses a fork rotating mechanism hydraulic system and a three-way forklift thereof, which comprises a brake, a hydraulic motor and a fork rotating mechanism, wherein the brake is arranged on the hydraulic motor for driving the fork to rotate; the oil inlet end of the reversing valve is communicated with the gear pump, the oil outlet end of the reversing valve is communicated with the cartridge valve component through a pipeline, and the cartridge valve component is communicated with the brake and the hydraulic motor; wherein: the cartridge valve assembly includes a double acting counterbalance valve and a shuttle valve in communication with each other. The utility model discloses a set up the stopper that is in normally closed state at the rotatory hydraulic motor end of drive fork, the motor is when rotating under hydraulic system's effect, no matter the motor is just passed and the reversal, can all open the stopper behind the oil circuit automatic switch-over through the shuttle valve, when having realized that the fork is rotatory to the optional position, the stopper all can effectively lock hydraulic motor, when the motor rotates, remove the braking in step, avoid leaking because of motor and valve in and cause the motor to rotate, lead to the fork to rotate, produce the risk that the goods falls.
Description
Technical Field
The utility model relates to an industry fork truck equipment technical field specifically is a fork rotary mechanism hydraulic system and three-dimensional fork truck thereof.
Background
The modern logistics industry develops rapidly, the urbanization process develops rapidly, and the popular cities are precious in the soil. The requirement on the storage capacity rate of the warehouse is higher and higher, the storage capacity rate is greatly improved by applying the three-way forklift, and the land input cost is reduced. And three-way fork truck in the existing market, the fork rotatory mode is mostly hydraulic drive, and hydraulic drive mode adopts hydraulic motor drive more, and hydraulic motor drive exists and leaks in motor and the valves, leads to fork truck when carrying cargo the walking, leads to leaking in motor and the valves because of the impact that the goods rocked the production, arouses the motor rotation to lead to the fork rotatory, can not keep the goods position, cause the goods risk such as drop. The conventional solution adopts a mechanical locking mechanism which is added externally, but the mechanical locking mechanism has high cost, can only lock when the pallet fork rotates to the limit position, and cannot lock at any position of the pallet fork, so that the working condition adaptability of the forklift is reduced; the other solution is to add a brake on the motor, and additionally add a pipeline and a control valve from the vehicle body for controlling the brake to open and return oil, so that the oil circuit is complex and the cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fork rotary mechanism hydraulic system and three-dimensional fork truck thereof to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a hydraulic system for a pallet fork rotating mechanism comprises
A brake provided on a hydraulic motor for driving the fork to rotate;
the oil inlet end of the reversing valve is communicated with the gear pump, the oil outlet end of the reversing valve is communicated with the cartridge valve component through a pipeline, and the cartridge valve component is communicated with the brake and the hydraulic motor;
wherein: the cartridge valve assembly comprises a double-acting balance valve and a shuttle valve which are communicated with each other, the oil outlet of the double-acting balance valve is respectively connected with two oil ports of the hydraulic motor, two oil inlets of the shuttle valve are respectively connected to the oil outlet of the double-acting balance valve, and the oil outlet of the shuttle valve is communicated with the oil releasing port of the brake.
Preferably, the brake is communicated with an energy accumulator, the energy accumulator is communicated with an oil inlet of the double-acting balance valve, and a second one-way valve is arranged on a pipeline communicated with the energy accumulator and the double-acting balance valve.
Preferably, an overflow valve is arranged on a pipeline for communicating the gear pump with the reversing valve.
The application also provides a three-way forklift, which comprises the above hydraulic system for the pallet fork rotating mechanism.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a set up the stopper that is in normally closed state at the hydraulic motor end that drives the fork rotation, when the motor rotates under hydraulic system's effect, no matter the motor is just passed and is reversed, can open the stopper after the oil circuit automatic switch-over through the shuttle valve, when having realized that the fork rotates to optional position, the stopper can all effectively lock hydraulic motor, when the motor rotates, the synchronous braking that relieves, avoid leaking because of motor and valve in and cause the motor to rotate, lead to the fork to rotate, produce the risk that the goods falls;
2. the utility model discloses a set up the energy storage ware in the hydraulic system, the fluid in stopper spring chamber can be arranged into the energy storage ware, leaks extra fluid in the stopper and flows into the energy storage ware, exceeds check valve opening pressure after, fluid flows back to the oil tank through the rotatory oil pipe of driving motor, need not additionally to increase oil pipe; meanwhile, the energy accumulator can provide additional hydraulic pressure to increase braking force;
3. the utility model can avoid the fork truck from rotating the fork when the fork truck is loaded on the slope through the double-acting balance valve in the hydraulic oil circuit, and the fork is rotated and stalled due to the overrunning load generated by the load gravity, thereby causing the risk of falling of the goods; and, the double acting counterbalance valve also has the effect of protecting the motor and mechanical structure in the event of shock loading.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the inner slide frame component of the present invention;
fig. 3 is a front view of the three-way forklift of the present invention;
fig. 4 is a top view of the three-way forklift of the present invention.
In the figure: the hydraulic control system comprises a reversing valve 1, a first check valve 2, an overflow valve 3, a motor 4, a gear pump 5, an oil tank 6, an oil suction filter 7, an oil return filter 8, a first pipeline 9, a second pipeline 10, a double-acting balance valve 11, a shuttle valve 12, a brake piston cavity 13a, a brake 13, a brake part 13b, a hydraulic motor 14, a third pipeline 15, a fourth pipeline 16, an accumulator 17, a fifth pipeline 18, a second check valve 19, an inner carriage part 20, a bridge part 21, a cartridge valve assembly 22, a gear assembly 23, a rotating shaft 24, a fork frame 25 and a fork 26.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
a pinion is installed on an output shaft of the hydraulic motor 14 and can drive the gear assembly 23 to rotate, so as to drive a rotating shaft 24 with a large gear installed at the end part to rotate, a fork 26 is installed on a fork frame 25, the fork frame 25 is installed on the rotating shaft 24, the rotating shaft 24 rotates to drive the fork 26 to rotate, a brake 13 is installed at the tail shaft end of the hydraulic motor 14, a release oil port of the brake 13 is connected to the cartridge valve assembly 22 through a third pipeline 15, the cartridge valve assembly 22 comprises a double-acting balance valve 11 and a shuttle valve 12 which are communicated with each other, an oil drain port of a spring cavity of the brake 13 is connected to the energy accumulator 17 through a fourth pipeline 16, an oil port of the energy accumulator 17 is simultaneously connected to the cartridge valve assembly 22 through a fifth pipeline 18, the cartridge valve assembly 22 is installed on two oil port end faces of the hydraulic motor 14, the two oil outlets are respectively connected with the hydraulic motor 14 through a plane sealing mode, and two oil inlets of the double-acting balance valve 11 are respectively connected to a hydraulic oil port of a hydraulic body through a first pipeline 9 and a second pipeline 10 A system component;
the motor 4 drives the gear pump 5 to pump oil in a rotating manner, an oil outlet of the gear pump 5 is connected to an oil inlet of the Y-shaped neutral position function reversing valve 1, and two oil outlets of the reversing valve 1 are respectively connected to oil inlets of the plug-in valve components 22 in the fork 26 rotating hydraulic component through a first pipeline 9 and a second pipeline 10 which surround pulleys on a fork gantry;
when the reversing valve 1 is in the middle position, oil pumped out by the gear pump 5 is connected to an oil return filter 8 through an oil suction filter 7 and an oil return port of the reversing valve 1, and finally returns to an oil tank 6, and the hydraulic system is unloaded;
when the reversing valve 1 is in the left position, hydraulic oil pumped out by the gear pump 5 flows to the cartridge valve assembly 22 from the oil suction filter 7 and the first pipeline 9, pressure oil opens a left oil return path of the double-acting balance valve 11 through a pilot oil path, the pressure oil pushes a core to move leftwards through a right oil port of the shuttle valve 12, the pressure oil enters the shuttle valve 12, flows to the brake 13 through the pilot oil path of the shuttle valve 12 to release an oil port and open the brake 13, the pressure oil flows into the hydraulic motor 14 through the right oil path at the moment, the hydraulic motor 14 is pushed to rotate, the hydraulic oil discharged by the hydraulic motor 14 flows through the left oil path, flows through the reversing valve 1 and the oil return filter 8 through the balance valve 11 and the second pipeline 10, and finally returns to the oil tank 6;
when the reversing valve 1 is in the right position, hydraulic oil pumped out by the gear pump 5 flows to the cartridge valve assembly 22 from the second pipeline 10, pressure oil opens a right side oil return path of the double-acting balance valve 11 through a pilot oil path, the pressure oil pushes a core to move rightwards through a left side oil port of the shuttle valve 12, the pressure oil enters the shuttle valve 12, flows to the brake 13 through the pilot oil path of the shuttle valve 12 to release an oil port and open the brake 13, at the moment, the pressure oil flows into the hydraulic motor 14 through the left side oil path to push the hydraulic motor 14, and the hydraulic oil discharged by the hydraulic motor 14 flows through the right side oil path, flows through the reversing valve 1 and the oil return filter 8 through the first pipeline 9 through the double-acting balance valve 11, and finally returns to the oil tank 6.
When the brake 13 is opened, the spring of the piston cavity 13a of the brake 13 is compressed, oil in the spring cavity is pressed into the energy accumulator 17, meanwhile, if the piston of the brake 13 leaks inwards, hydraulic oil which enters the energy accumulator 17 more causes the pressure of the energy accumulator 17 to increase, and when the pressure exceeds the pressure of the second one-way valve 19, the oil returns to the oil tank from the second one-way valve 19 connected to the corresponding oil return pipeline; when the reversing valve 1 stops supplying oil to the hydraulic motor 14, the balance valve 11 is not provided with pressure difference, oil passages on two sides are closed, the pressure difference does not exist on two sides of the shuttle valve 12, the valve core returns to the center, the pilot oil passage has no pressure, the brake 13 pushes the brake part 13b to brake the hydraulic motor 14 by the spring of the brake 13, the oil in the spring cavity is connected with the energy accumulator 17 at the moment, and the oil in the energy accumulator 17 increases partial pressure and increases braking force.
When the fork 26 rotates to the mechanical limit position, or the fork 26 is overloaded with goods, the oil pumped by the gear pump 5 can overflow back to the oil tank 6 through the overflow valve 3, so that the hydraulic system and the mechanical structure are protected, the overflow valve 3 plays a role in preventing the hydraulic oil from flowing back through the gear pump, and the pipeline between the overflow valve 3 and the reversing valve 1 is provided with the first check valve 2.
The three-way forklift is provided with the application, a hydraulic assembly of the forklift body is arranged on the forklift body and is connected to a fork rotating hydraulic assembly arranged in a bridge component 21 through a first pipeline 9 and a second pipeline 10, the first pipeline 9 and the second pipeline 10 are wound around pulleys arranged on a portal system, the bridge component is arranged on an inner carriage component 20 and can move left and right on the inner carriage component 20, a hydraulic motor 14 drives the gear to rotate to drive a rotating shaft 24 to rotate, a fork frame 25 arranged on the rotating shaft 24 rotates along with the gear to drive forks 26 arranged on the fork frame 25 to rotate left and right, the bridge component 21 moves left and right laterally on the inner carriage component 20, and the forks 26 can rotate around the rotating shaft 24, so that the three-way forking of the forks 26 can be realized; simultaneously, because behind the fork 26 fork goods, need rotate to left side or right limit and go out, fork truck just can walk, avoids walking in-process brake, because goods inertia drives fork 26 fast revolution, causes the goods to fall, causes the incident, so must need fork 26 to rotate the reliable locking of back needs of any position.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a fork rotary mechanism hydraulic system which characterized in that: comprises that
A brake (13) provided on a hydraulic motor (14) for driving the fork (26) to rotate;
the oil inlet end of the reversing valve (1) is communicated with the gear pump (5), the oil outlet end of the reversing valve is communicated with the cartridge valve component (22) through a pipeline, and the cartridge valve component is communicated with the brake (13) and the hydraulic motor (14);
wherein: the cartridge valve assembly (22) comprises a double-acting balance valve (11) and a shuttle valve (12) which are communicated with each other, the oil outlet of the double-acting balance valve (11) is respectively connected with two oil ports of a hydraulic motor (14), two oil inlets of the shuttle valve (12) are respectively connected to the oil outlet of the double-acting balance valve (11), and the oil outlet of the shuttle valve (12) is communicated with the oil releasing port of a brake (13).
2. The fork swivel mechanism hydraulic system of claim 1, wherein: the brake (13) is communicated with an energy accumulator (17), the energy accumulator (17) is communicated with an oil inlet of the double-acting balance valve (11), and a second one-way valve (19) is arranged on a pipeline communicated with the energy accumulator (17) and the double-acting balance valve (11).
3. The fork swivel mechanism hydraulic system of claim 1, wherein: and an overflow valve (3) is arranged on a pipeline for communicating the gear pump (5) and the reversing valve (1).
4. A three-way forklift, its characterized in that: a fork swivel mechanism hydraulic system comprising a fork swivel mechanism as claimed in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120734882.XU CN214570512U (en) | 2021-04-11 | 2021-04-11 | Fork rotary mechanism hydraulic system and three-way forklift thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120734882.XU CN214570512U (en) | 2021-04-11 | 2021-04-11 | Fork rotary mechanism hydraulic system and three-way forklift thereof |
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| Publication Number | Publication Date |
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| CN214570512U true CN214570512U (en) | 2021-11-02 |
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| CN202120734882.XU Active CN214570512U (en) | 2021-04-11 | 2021-04-11 | Fork rotary mechanism hydraulic system and three-way forklift thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938840A (en) * | 2021-04-11 | 2021-06-11 | 合肥搬易通科技发展有限公司 | Fork rotary mechanism hydraulic system and three-way forklift thereof |
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2021
- 2021-04-11 CN CN202120734882.XU patent/CN214570512U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938840A (en) * | 2021-04-11 | 2021-06-11 | 合肥搬易通科技发展有限公司 | Fork rotary mechanism hydraulic system and three-way forklift thereof |
| CN112938840B (en) * | 2021-04-11 | 2024-06-28 | 合肥搬易通科技发展有限公司 | Fork rotary mechanism hydraulic system and three-way forklift thereof |
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