CN110370209B - Electric wrench - Google Patents
Electric wrench Download PDFInfo
- Publication number
- CN110370209B CN110370209B CN201910674679.5A CN201910674679A CN110370209B CN 110370209 B CN110370209 B CN 110370209B CN 201910674679 A CN201910674679 A CN 201910674679A CN 110370209 B CN110370209 B CN 110370209B
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- China
- Prior art keywords
- transmission
- block
- wheel disc
- transmission wheel
- lock
- Prior art date
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- 230000005540 biological transmission Effects 0.000 claims abstract description 121
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 230000001276 controlling effect Effects 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000010008 shearing Methods 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009194 climbing Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D11/00—Clutches in which the members have interengaging parts
- F16D11/14—Clutches in which the members have interengaging parts with clutching members movable only axially
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H1/222—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with non-parallel axes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/038—Gearboxes for accommodating bevel gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/039—Gearboxes for accommodating worm gears
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Gear Transmission (AREA)
Abstract
The invention belongs to the technical field of wrenches, and particularly relates to an electric wrench, which comprises a support shell, and a motor, a speed reducer, a clutch and a transmission assembly which are sequentially connected inside the support shell, wherein the transmission assembly is connected with a transmission wheel disc, the inner side of the transmission wheel disc is connected with an inner opening of the wrench, a locking device is arranged on the outer side of the transmission wheel disc, a torque adjusting device is arranged between the speed reducer and the clutch, a power supply is arranged for supplying power to the electric wrench, and a switch is arranged for controlling the working state of the electric wrench; the transmission wheel disc and the wrench inner opening are of a split structure, and under the control of the motor, the transmission wheel disc and the wrench inner opening relatively rotate relative to the electric wrench main body through the transmission of the speed reducer, the clutch and the transmission assembly. The invention is driven by a motor, does not need to screw the same nut for a plurality of times, greatly improves the working efficiency, does not have the screwing action, avoids the risk of collision, has adjustable moment and replaceable inner opening of the wrench, and is suitable for screwing and unscrewing different nuts.
Description
Technical Field
The invention belongs to the technical field of wrenches, and particularly relates to an electric wrench.
Background
At the joint of the mechanical equipment oil pipe and gas pipe, a socket spanner and a ratchet spanner cannot be used due to the limitation of the pipeline at the rotation axis of the nut. The oil gas pipeline is complex in arrangement and is connected with mechanical equipment to form a hydraulic and pneumatic system. The traditional tool is easily knocked with the mechanical equipment under the influence of space due to the limitation of the mechanical equipment and an external pipeline thereof. Limited travel, and the same nut is screwed up for a plurality of times to easily damage the nut.
The screw thread screwing distance is used for adjusting the installation tension and the matching of the installation position, the screw thread screwing distance of the electric hoop, the screw thread suspender, the wire rope tightening tensioner of the basket bolt and the like is too long, the installation position is higher than the ground, and some climbing tools, elevators and the like are needed to reach the installation position. The operation space of the staff is limited, the danger is increased for high-altitude operation due to repeated tightening, and the repeated operation efficiency is low.
In the prior art, an open spanner, a sleeve nut dismounting spanner and the like are available. But these wrenches are unevenly stressed on the nut. The open spanner acts on the nut to form two stress bearing points which are too few. The sleeve nut dismounting wrench is of an opening structure. The stress points acting on the nut are asymmetric. The number of the stress points is too small, the stress is uneven, and the nut is easy to damage.
Disclosure of Invention
In order to solve the technical problems, the invention provides an electric wrench.
The invention is realized in such a way, the electric wrench comprises a supporting shell, and a motor, a speed reducer, a clutch and a transmission assembly which are sequentially connected in the supporting shell, wherein the transmission assembly is connected with a transmission wheel disc, the inner side of the transmission wheel disc is connected with a wrench inner opening, a locking device is arranged on the outer side of the transmission wheel disc, a torque adjusting device is arranged between the speed reducer and the clutch, a power supply is arranged for supplying power to the electric wrench, and a switch is arranged for controlling the working state of the electric wrench;
The transmission wheel disc and the wrench inner opening are of a split structure, and under the control of the motor, the transmission wheel disc and the wrench inner opening relatively rotate relative to the electric wrench main body through the transmission of the speed reducer, the clutch and the transmission assembly.
Further, the torque adjusting device comprises a fixed plate connected to the support shell, two support plates connected to the fixed plate, a pushing piece rotatably connected to the support plates, a T-shaped connecting rod connected to the lower ends of the two pushing pieces through pins, a fixed block and an adjusting knob, wherein the fixed block is fixedly connected to the fixed plate, the adjusting knob is rotatably connected to the fixed block, and one end of the T-shaped connecting rod is connected to the adjusting knob through threads after penetrating through the fixed block;
The clutch is close to one end of the speed reducer and is provided with a movable bearing, the movable bearing is arranged in a movable bearing seat, and the movable bearing seat can be pushed to advance by two pushing pieces.
Further, the clutch is a jaw clutch, and comprises a sleeve, a compression spring, a driving tooth disc and a driven tooth disc, wherein the sleeve is arranged on the movable bearing, one end of the compression spring is connected in the sleeve, the other end of the compression spring is connected with the driving tooth disc, the driving tooth disc is in butt joint with the driven tooth disc, and the other end of the driven tooth disc is connected with the transmission assembly.
Further, the transmission assembly comprises a transmission shaft, a driving bevel gear assembly and a balance wheel assembly, wherein the transmission shaft is connected with the clutch through a transmission bearing, and a sliding bearing and a transmission wheel A are arranged at the other end of the transmission shaft; the driving bevel gear assembly comprises a driving bevel gear shaft, a driving wheel B arranged on the driving bevel gear shaft, support bearings A, sliding bearings and a driving bevel gear which are respectively arranged at two end parts of the driving bevel gear shaft, wherein the driving wheel B is meshed with the driving wheel A to drive the driving bevel gear to rotate, and the driving bevel gear drives the driving wheel disc to rotate; the balance wheel assembly comprises a balance wheel shaft, support bearings B, sliding bearings and balance wheels, wherein the support bearings B, the sliding bearings and the balance wheels are respectively arranged at two ends of the balance wheel shaft, and the balance wheels are symmetrical to the driving bevel gears and are in contact with the transmission wheel discs.
Further, the transmission assembly comprises a worm and worm support bearings which are respectively arranged at two ends of the worm, and the middle section of the worm is rotatably connected with the transmission wheel disc in a worm and gear mode.
Further, including the drive rim plate casing in the support casing, the drive rim plate sets up in the drive rim plate casing, locking device includes rotatable open and shut casing and the pin lock that is used for locking the open and shut casing, the pin lock includes two tab seats, door-shaped lockpin, reset spring, latch bolt male block and latch bolt female block, two tab seats symmetry are fixed on the latch bolt female block, reset spring fixes on the latch bolt female block between two tab seats, be used for making the door-shaped lockpin reset, notch is established to the inboard symmetry position of door-shaped lockpin, the notch degree of depth is half of lockpin pole, the notch height is slightly greater than latch bolt male block thickness, the latch bolt male block is made by rectangular latch bolt and base are integrative, rectangular latch bolt is opened semi-circular through groove in thickness direction symmetry, the latch bolt female block includes overlap joint section and latch bolt main part, be equipped with two lock pin holes below the latch bolt main part, be equipped with the semi-circular through groove that matches with the latch bolt male block in the rectangular latch bolt female block, the semi-circular through groove that matches with latch bolt male block, the latch bolt male block and the welding in the notch is equipped with the latch bolt female block, the welding is in the hollow lock plate's hole, the welding is followed by the lock bolt female block.
Further, a plurality of guide wheels are distributed in the transmission wheel disc shell, and the guide wheels are contacted with the outer edge of the transmission wheel disc and used for limiting the position of the transmission wheel disc.
Further, the guide wheel comprises a wheel body and a supporting shaft, a shaft shoulder structure is arranged on the wheel body up and down and used for limiting the position of the transmission wheel disc, an arc-shaped reset spring piece is arranged on the inner side of one end of the opening and closing shell, which is far away from the transmission assembly, and the reset spring piece is in contact with the guide wheel supporting shaft at the position.
Further, a plurality of shearing pins are arranged on the outer side of the inner opening of the wrench, pin holes are formed in positions, corresponding to the shearing pins, of the transmission wheel disc, and magnets are arranged at the bottoms of the pin holes.
Further, a plastic shell is arranged on the outer side of the supporting shell, the switch comprises a low-speed switch, a photoelectric switch, a speed regulating switch and a positive-negative change-over switch which are arranged on different positions of the plastic shell on the outer side of the supporting shell and are all connected with the motor, the low-speed switch controls the motor to rotate at a low speed and is used for enabling a split line of the transmission wheel disc to coincide with a split line of the locking device, the photoelectric switch is of a U-shaped structure, two through holes are respectively arranged on symmetrical positions of the transmission wheel disc, and when the through holes rotate to the positions of the photoelectric switch, two stages of the photoelectric switch are connected, so that a circuit of the low-speed switch is cut off; the speed regulating switch is used for controlling the rotating speed of the motor and then controlling the rotating speed of the transmission wheel disc; the positive and negative change-over switch is used for controlling the rotation direction of the motor, and then controlling the rotation direction of the transmission wheel disc.
Compared with the prior art, the invention has the advantages that:
1. Efficiency is that: the motor is driven, the rotating speed is adjustable, the force distance is adjustable, and the inner opening of the wrench can be rapidly switched;
2. Risk: repeated screwing action is not needed, so that the collision risk in complex places is avoided;
3. safety: the scheme is provided with various safety structures and circuit protection, and the power supply, the motor, the speed reducer, the vortex rod and the wrench inner port in the scheme can be rearranged according to the requirements of users;
4. The adaptability is strong: the power supply may be provided as a wired connection or a plug-in.
Drawings
FIG. 1 is a schematic view of the whole structure of an electric wrench according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of a torque adjusting device;
FIG. 3 is a schematic view of a dog clutch configuration;
FIG. 4 is a schematic view of a transmission assembly according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of the whole structure of an electric wrench according to embodiment 2 of the present invention;
FIG. 6 is a schematic view of a structure of the support housing;
FIG. 7 is a schematic view of a pin lock construction;
FIG. 8 is a schematic view of a lock Yang Kuaijie;
fig. 9 is an external structural view of the electric wrench provided in embodiment 1;
FIG. 10 is a schematic view of the internal port structure of the wrench;
FIG. 11 is a schematic diagram of a drive sheave structure;
FIG. 12 is a circuit diagram of the electric wrench of the present invention when the power source is a battery;
FIG. 13 is a circuit diagram of the electric wrench of the present invention when the power source is a household power source;
Fig. 14 is a view showing a scenario in which the electric wrench provided by the invention is suitable for application, wherein fig. 14 (a) is an oil pipe and air pipe joint, fig. 14 (b) is an oil pipe and air pipe joint in mechanical equipment, fig. 14 (c) is a basket bolt wire rope tightening tensioner, fig. 14 (d) is an electric hoop, and fig. 14 (e) is a threaded suspender.
Detailed Description
The present invention will be described in further detail with reference to the drawings and 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 electric bevel gear wrench
Referring to fig. 1, the embodiment provides an electric wrench, which comprises a support housing 1, and a motor 2, a speed reducer 3, a clutch 4 and a transmission assembly which are sequentially connected inside the support housing 1, wherein the transmission assembly is connected with a transmission wheel disc 5, the inner side of the transmission wheel disc 5 is connected with a wrench inner opening 6, a locking device 7 is arranged on the outer side of the transmission wheel disc 5, a torque adjusting device is arranged between the speed reducer 3 and the clutch 4, a power supply is arranged for supplying power to the electric wrench, and a switch is arranged for controlling the working state of the electric wrench;
the transmission wheel disc 5 and the wrench inner opening 6 are of a split structure, and under the control of the motor 2, the transmission wheel disc 5 and the wrench inner opening 6 relatively rotate relative to the electric wrench main body through the transmission of the speed reducer 3, the clutch 4 and the transmission assembly.
Referring to fig. 1 and 2, the moment adjusting device comprises a fixing plate 48 connected to the support housing 1, two support plates 8 connected to the fixing plate 48, pushing plates 9 rotatably connected to the support plates 8, a T-shaped connecting rod 11 connected to the lower ends of the two pushing plates 9 through pins, a fixing block 12 and an adjusting knob 13, wherein the fixing block 12 is fixedly connected to the fixing plate 48, the adjusting knob 13 is rotatably connected to the fixing block 12, and one end of the T-shaped connecting rod 11 is in threaded connection with the adjusting knob 13 after passing through the fixing block 12;
the clutch 4 is provided with a movable bearing 14 at one end close to the speed reducer 3, the movable bearing 14 is arranged in a movable bearing seat 15, and the two pushing pieces 9 can push the movable bearing seat 15 to advance.
Referring to fig. 3, the clutch 4 is a dog clutch, and includes a sleeve 16, a compression spring 17, a driving dog plate 18 and a driven dog plate 19, wherein the sleeve 16 is mounted on the movable bearing 14, one end of the compression spring 17 is connected in the sleeve 16, the other end is connected with the driving dog plate 18, the driving dog plate 18 is in butt joint with the driven dog plate 19, and the other end of the driven dog plate 19 is connected with the transmission assembly.
Referring to fig. 1 and 4, the transmission assembly comprises a transmission shaft 20, a driving bevel gear assembly and a balance wheel assembly, wherein the transmission shaft 20 is connected with the clutch 4 through a transmission bearing 21, and a sliding bearing and a transmission wheel A47 are arranged at the other end of the transmission shaft 20; the driving bevel gear assembly comprises a driving bevel gear shaft 22, a driving wheel B23 arranged on the driving bevel gear shaft 22, support bearings A24 respectively arranged at two ends of the driving bevel gear shaft 22, a sliding bearing and a driving bevel gear 25, wherein the driving wheel B23 is meshed with the driving wheel A47 to drive the driving bevel gear 25 to rotate, and the driving bevel gear 25 drives the driving wheel disc 5 to rotate; the balance wheel assembly comprises a balance wheel shaft 26, support bearings B27, sliding bearings and a balance wheel 28 which are respectively arranged at two ends of the balance wheel shaft 26, wherein the balance wheel 28 is symmetrical with the driving bevel gear 25 and is in contact with the transmission wheel disc 5.
Referring to fig. 6, fig. 7, fig. 8 and fig. 9, the support housing 1 comprises a transmission wheel disc housing 31, the transmission wheel disc 5 is arranged in the transmission wheel disc housing 31, the locking device 7 comprises a rotatable opening and closing housing 32 and a pin lock for locking and closing housing 32, the pin lock comprises two lug seats 33, a door-shaped lock pin 34, a return spring 35, a lock block male block 36 and a lock block female block 37, the two lug seats 33 are symmetrically fixed on the lock block female block 37, the return spring 35 is fixed on the lock block female block 37 between the two lug seats 33, the door-shaped lock pin 34 is used for resetting, a notch is arranged at the inner side symmetrical position of the door-shaped lock pin 34, the depth of the notch is half of a lock pin rod, the height of the notch is slightly larger than the thickness of the lock block male block 36, the lock block male block 36 is integrally formed by a rectangular lock block and a base, the rectangular lock block female block is symmetrically provided with a semicircular through groove in the thickness direction, the lock block female block 37 comprises a lap joint section and a lock block main body, two lock pin holes are formed in the upper and lower directions of the lock block main body, the lock block main body is provided with a rectangular lock pin hole, the lock block female block 36 is matched with the semicircular groove 36, and the semicircular lock pin groove 36 is welded with the semicircular through the lock groove 37 in the housing 37. The transmission wheel 5 is provided with a hole corresponding to the door-shaped lock pin 34, and when the hole on the transmission wheel 5 corresponds to the door-shaped lock pin 34, the opposite opening center line of the transmission wheel 5 is exactly coincident with the opening and closing line of the opening and closing shell 32.
Referring to fig. 4, a plurality of guide wheels 38 are distributed in the transmission wheel housing 31, and the guide wheels 38 are in contact with the outer edge of the transmission wheel 5 for limiting the position of the transmission wheel 5.
Referring to fig. 1, the guide wheel 38 includes a wheel body and a supporting shaft, the wheel body is provided with a shoulder structure on the upper and lower sides for limiting the position of the transmission wheel disc 5, the inner side of the opening and closing housing 32, which is far away from one end of the transmission assembly, is provided with an arc-shaped reset spring piece 39, and the reset spring piece 39 is in contact with the guide wheel supporting shaft at the position.
Referring to fig. 10, a plurality of shearing pins 40 are arranged on the outer side of the inner opening 6 of the wrench, pin holes are arranged at positions of the transmission wheel disc 5 corresponding to the shearing pins 40, and magnets are arranged at the bottoms of the pin holes. During installation, the shear pin 40 is sucked into the pin hole by the action of the magnet.
Referring to fig. 1, 11, 12 and 13, the switch includes a low-speed switch 41, a photoelectric switch 42, a speed regulating switch 43 and a forward-reverse switch 44 which are arranged at different positions of the supporting housing 1 and are connected with the motor 2, the low-speed switch 41 controls the motor 2 to rotate at a low speed, the two-way switch is used for enabling the two-way opening of the transmission wheel disc 5 to coincide with the two-way opening of the locking device 7, the photoelectric switch 42 is in a U-shaped structure, two through holes 45 are respectively arranged at symmetrical positions of the transmission wheel disc 5, and when the through holes 45 rotate to the positions of the photoelectric switch 42, two stages of the photoelectric switch 42 are connected, so that a circuit of the low-speed switch 41 is cut off; the speed regulating switch 43 is used for controlling the rotating speed of the motor 2 and then controlling the rotating speed of the transmission wheel disc 5; the forward and reverse switch 44 is used to control the rotation direction of the motor 2, and in turn, the rotation direction of the drive sheave 5.
Referring to fig. 14 (a), 14 (b), 14 (c) and 14 (d), for example, the case where the electric wrench provided in this embodiment is applicable is provided, when the electric wrench provided in this embodiment is used, the power is turned on, the low-speed switch 41 is turned on, the motor 2 controls the transmission wheel 5 to rotate at a low speed through each transmission member, when the through hole 45 on the transmission wheel 5 rotates to the position of the photoelectric switch 42, the two stages of the photoelectric switch 42 are turned on to cut off the low-speed circuit, the motor 2 stops operating, at this time, the door-shaped lock pin 34 of the stud lock is pressed, the lock block male block 36 and the lock block female block 37 are separated, the locking device 7 is opened, the opening and closing housing 32 is opened, the transmission wheel 5 and the wrench inner opening 6 are opened accordingly, because the circular ring groove is provided on the transmission wheel 5, in the radial direction, the transmission wheel 5 is not separated from the opening and closing housing 32, in addition, because of the effect of the reset spring piece 39, the wheel body of the guide wheel 38 is pressed outwards, and the transmission wheel body is pressed again, so that the transmission wheel 5 is not slid out in the circumferential direction. The inner opening 6 of the spanner clamps the target nut, the door-shaped lock pin 34 of the stud lock is pressed again, the male lock block 36 and the female lock block 37 are locked, whether forward rotation or reverse rotation is required is determined according to the situation, the forward rotation is that the forward rotation switch 44 is shifted to the forward rotation position, the reverse rotation is that the forward rotation switch 44 is shifted to the reverse rotation position, the speed regulating switch 43 is pressed again, and the proper rotation speed is controlled while the rotation is carried out, so that the function of the electric spanner is realized.
When the torque is required to be regulated in the use process, the regulating knob 13 is turned, and the T-shaped connecting rod 11 drives the pushing piece 9 to advance or retreat through the hinge mechanism 10, so that the movable bearing 14 is driven to advance or retreat, and the torque is regulated.
When the transmission assembly of the embodiment works, the transmission shaft 20 drives the transmission wheel A47 to rotate in the rotating process, the transmission wheel A47 is meshed with the transmission wheel B23, and the driving bevel gear shaft 22 rotates under the action of the transmission wheel B23, so that the driving bevel gear 25 is driven to rotate, and the rotation of the driving bevel gear 25 drives the transmission wheel disc 5 to rotate, so that the transmission function is realized.
The half circular arc through groove of the male locking block 36 and the half circular arc through groove of the female locking block 37 of the stud lock of the embodiment form a complete circular hole, namely a locking hole. The specific working process of the stud lock is as follows:
the stud lock is opened: the door lock pin 34 is pressed down so that the grooved position of the door lock pin 34 coincides with the locking hole. The shearing force of the door lock 34 is removed and the male lock piece 36 is disengaged from the female lock piece 37. The opening and closing housing 32 is opened, and the door-shaped lock pin 34 is restored under the action of the restoring spring 35.
The pin lock is closed: the door lock pin 34 is pressed down so that the grooved position of the door lock pin 34 coincides with the locking hole. The opening and closing shell is closed. The door lock pin 34 is returned by the return spring 35. The door lock pin 34 is positioned to coincide with the locking aperture. The door lock pin 34 bears the shearing force of the male lock block 36 and the female lock block 37, and the lock blocks are locked.
Example 2 Worm wheel Worm electric spanner
Unlike embodiment 1, referring to fig. 5, the transmission assembly of this embodiment includes a worm 29 and worm support bearings 30 provided separately at both ends of the worm 29, and a middle section of the worm 29 is rotatably connected with the transmission wheel 5 in the form of a worm wheel and a worm.
In order to make the electric wrench safer to work, referring to fig. 9, 12 and 13, a contact protection 46 may be added in the electric wrench of the present invention, the contact protection 46 is also connected in the circuit of the switch, when the opening and closing housing 32 is opened, the contact protection KT (contact piece) cuts off the circuit, the motor winding is cut off, and the motor stops running.
Claims (6)
1. The electric wrench is characterized by comprising a supporting shell (1), and a motor (2), a speed reducer (3), a clutch (4) and a transmission assembly which are sequentially connected inside the supporting shell (1), wherein the transmission assembly is connected with a transmission wheel disc (5), the inner side of the transmission wheel disc (5) is connected with a wrench inner opening (6), a locking device (7) is arranged on the outer side of the transmission wheel disc (5), a torque adjusting device is arranged between the speed reducer (3) and the clutch (4), a power supply is arranged for supplying power to the electric wrench, and a switch is arranged for controlling the working state of the electric wrench;
the transmission wheel disc (5) and the wrench inner opening (6) are of a split structure, and under the control of the motor (2), the transmission wheel disc (5) and the wrench inner opening (6) relatively rotate relative to the electric wrench main body through the transmission of the speed reducer (3), the clutch (4) and the transmission assembly;
The support shell (1) comprises a transmission wheel disc shell (31), the transmission wheel disc (5) is arranged in the transmission wheel disc shell (31), the locking device (7) comprises an opening and closing shell (32) which can be opened in a rotating mode and a pin lock used for locking the opening and closing shell (32), the pin lock comprises two lug seats (33), a door-shaped lock pin (34), a return spring (35), a lock block male block (36) and a lock block female block (37), the two lug seats (33) are symmetrically fixed on the lock block female block (37), the return spring (35) is fixed on the lock block female block (37) between the two lug seats (33) and is used for enabling a door-shaped lock pin (34) to reset, a notch is formed in the inner side symmetrical position of the door-shaped lock pin (34), the depth of the notch is half of a lock pin rod, the height of the notch is slightly larger than the thickness of the lock block male block (36), the lock block male block (36) is integrally formed by a rectangular lock block and a base, a semicircular lock block is symmetrically opened in the thickness direction, the lock block female block (37) comprises a rectangular lock block and a main body block and a rectangular lock block, the lock block female block (37) is welded with the lock block female block (36) in the direction, and is provided with the rectangular lock block female block (36) and is welded with the rectangular lock block (36) and is provided with the rectangular lock block, and the rectangular lock block (36) and the rectangular lock block, with the lock block and the rectangular lock block and the lock block, the door-shaped lock pin (34) is inserted into a lock pin hole of the lock block female block (37);
A plurality of guide wheels (38) are distributed in the transmission wheel disc shell (31), and the guide wheels (38) are contacted with the outer edge of the transmission wheel disc (5) and used for limiting the position of the transmission wheel disc (5);
The guide wheel (38) comprises a wheel body and a supporting shaft, a shaft shoulder structure is arranged on the wheel body up and down and used for limiting the position of the transmission wheel disc (5), an arc-shaped reset spring piece (39) is arranged on the inner side of one end, far away from the transmission assembly, of the opening and closing shell (32), and the reset spring piece (39) is in contact with the guide wheel supporting shaft at the position;
The motor is characterized in that a plastic shell is arranged on the outer side of the supporting shell (1), the switch comprises a low-speed switch (41), a photoelectric switch (42), a speed regulating switch (43) and a forward-reverse change-over switch (44) which are arranged on different positions of the plastic shell on the outer side of the supporting shell (1) and are connected with the motor (2), the low-speed switch (41) controls the motor (2) to rotate at a low speed, a split line of the transmission wheel disc (5) is overlapped with a split line of the locking device (7), the photoelectric switch (42) is of a U-shaped structure, two through holes (45) are respectively formed in symmetrical positions of the transmission wheel disc (5), and when the through holes (45) rotate to the positions of the photoelectric switch (42), two stages of the photoelectric switch (42) are connected to cut off a circuit of the low-speed switch (41); the speed regulating switch (43) is used for controlling the rotating speed of the motor (2) and then controlling the rotating speed of the transmission wheel disc (5); the positive and negative change-over switch (44) is used for controlling the rotation direction of the motor (2), and then controlling the rotation direction of the transmission wheel disc (5).
2. The electric wrench as claimed in claim 1, wherein the torque adjusting means comprises a fixing plate (48) connected to the support housing (1), two support plates (8) connected to the fixing plate (48), pushing plates (9) rotatably connected to the support plates (8), a T-shaped link (11) connected to the lower ends of the two pushing plates (9) by pins, a fixing block (12) fixedly connected to the fixing plate (48), and an adjusting knob (13), the adjusting knob (13) rotatably connected to the fixing block (12), and one end of the T-shaped link (11) is threaded into the adjusting knob (13) after passing through the fixing block (12);
One end of the clutch (4) close to the speed reducer (3) is provided with a movable bearing (14), the movable bearing (14) is arranged in a movable bearing seat (15), and the two pushing pieces (9) can push the movable bearing seat (15) to advance.
3. The electric wrench as claimed in claim 2, wherein the clutch (4) is a dog clutch, and comprises a sleeve (16), a compression spring (17), a driving dog plate (18) and a driven dog plate (19), wherein the sleeve (16) is mounted on the movable bearing (14), one end of the compression spring (17) is connected in the sleeve (16), the other end of the compression spring is connected with the driving dog plate (18), the driving dog plate (18) is in butt joint with the driven dog plate (19), and the other end of the driven dog plate (19) is connected with the transmission assembly.
4. The electric wrench as claimed in claim 1, wherein the transmission assembly comprises a transmission shaft (20), a driving bevel gear assembly and a balance wheel assembly, the transmission shaft (20) is connected with the clutch (4) through a transmission bearing (21), and a sliding bearing and a transmission wheel A (47) are arranged at the other end of the transmission shaft (20); the driving bevel gear assembly comprises a driving bevel gear shaft (22), a driving wheel B (23) arranged on the driving bevel gear shaft (22), support bearings A (24) respectively arranged at two ends of the driving bevel gear shaft (22), a sliding bearing and a driving bevel gear (25), wherein the driving wheel B (23) is meshed with the driving wheel A (47) to drive the driving bevel gear (25) to rotate, and the driving bevel gear (25) drives the driving wheel disc (5) to rotate; the balance wheel assembly comprises a balance wheel shaft (26), and support bearings B (27), sliding bearings and balance wheels (28) which are respectively arranged at two ends of the balance wheel shaft (26), wherein the balance wheels (28) are symmetrical to the driving bevel gear (25) and are in contact with the transmission wheel disc (5).
5. An electric wrench as claimed in claim 1, wherein the transmission assembly comprises a worm (29) and worm support bearings (30) separately provided at both ends of the worm (29), and the middle section of the worm (29) is rotatably connected with the transmission wheel (5) in the form of a worm gear.
6. The electric wrench as claimed in claim 1, wherein a plurality of shearing pins (40) are arranged on the outer side of the wrench inner opening (6), pin holes are arranged at positions of the transmission wheel disc (5) corresponding to the shearing pins (40), and magnets are arranged at the bottoms of the pin holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910674679.5A CN110370209B (en) | 2019-07-25 | 2019-07-25 | Electric wrench |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910674679.5A CN110370209B (en) | 2019-07-25 | 2019-07-25 | Electric wrench |
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| CN110370209A CN110370209A (en) | 2019-10-25 |
| CN110370209B true CN110370209B (en) | 2024-06-28 |
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| CN201910674679.5A Active CN110370209B (en) | 2019-07-25 | 2019-07-25 | Electric wrench |
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| CN112615229A (en) * | 2020-12-10 | 2021-04-06 | 广东电网有限责任公司 | Hand-held electric grounding wire mounting and dismounting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210335765U (en) * | 2019-07-25 | 2020-04-17 | 赵宇 | Electric wrench |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4397992B2 (en) * | 1999-03-17 | 2010-01-13 | 前田金属工業株式会社 | Ratchet wrench |
| RS20050224A (en) * | 2002-08-21 | 2008-06-05 | Xact-Design & Engineering Pty Ltd., | Torque transmission mechanism |
| CN101733722B (en) * | 2009-12-09 | 2013-05-22 | 夏新财 | Multi-functional speeder wrench and operation method thereof |
| CN103170941A (en) * | 2011-12-26 | 2013-06-26 | 核动力运行研究所 | Wrench special for nuts of main heat transfer pipe support post of heavy water reactor |
| KR20160054056A (en) * | 2014-10-17 | 2016-05-16 | 정길 | Openable and closable ratchet wrench |
| CN105522374B (en) * | 2016-01-15 | 2017-12-01 | 华南理工大学 | A kind of the assembling device and its assembly method of full-automatic tightening nuts |
| KR20170098424A (en) * | 2016-02-21 | 2017-08-30 | 장준우 | Auto rotating wrench |
| CN106335019B (en) * | 2016-11-11 | 2018-06-05 | 苏州创必成电子科技有限公司 | With the automatically controlled monkey wrench twisted |
| KR101892981B1 (en) * | 2017-10-30 | 2018-08-31 | 한국생산기술연구원 | Automatic fastening apparatus for pipe which can be used for various sizes of nuts and, fastening methods therefor |
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| CN210335765U (en) * | 2019-07-25 | 2020-04-17 | 赵宇 | Electric wrench |
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