A manual and semi-automatic dual-mode steel bar socket wrench

Abstract

The invention discloses a manual and semi-automatic dual-mode steel bar socket wrench, comprising a clamp handle, a fixed jaw and a tightening assembly, wherein the fixed jaw and the tightening assembly are arranged at the same end of the clamp handle, and a grip is arranged at the other end of the clamp handle, the interior of the fixed jaw is hollow and a driving wheel is rotatably arranged, the outer edge of the driving wheel protrudes from the side of the fixed jaw, and a motor and a reduction box are arranged on the outer side surface of the fixed jaw, and a meshing worm gear group is arranged in the reduction box, the output shaft of the motor is connected to the worm, and the mounting shaft of the worm wheel is connected to the mounting shaft of the driving wheel. The manual and semi-automatic dual-mode steel bar socket wrench can realize the tightening or disassembly of the sleeve by motor drive, which can significantly improve the working efficiency and reduce the labor intensity. When the power supply in the use environment is limited, the wrench can also be used manually, which improves the applicability and convenience of the wrench. The structure of the wrench is relatively simple, the stability is good, and the later maintenance is relatively easy.

Description

Technical Field

[0001] The invention relates to the technical field of wrenches, in particular to a manual and semi-automatic dual-mode steel bar socket wrench. Background Art

[0002] In the construction engineering concrete structure and the engineering structures of bridges, dams, nuclear power plants and general structures, the use of mechanical methods to connect steel bars has been implemented for many years. Among them, the sleeve thread connection has a wide range of applications and is used in large quantities. In the actual construction process, the steel sleeve has always been tightened or disassembled manually using pipe clamps or torque wrenches. This operation method has the disadvantages of slow operation speed and low efficiency. The operation quality is easily affected by the specific operators and environmental conditions. The labor intensity of the operators and the difficulty of on-site supervision and management are relatively high. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a manual and semi-automatic dual-mode steel bar socket wrench, which can realize the tightening and disassembly of the socket through motor drive, can significantly improve the working efficiency, reduce labor intensity, and effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a manual, semi-automatic dual-mode steel bar socket wrench, comprising a clamp handle, a fixed jaw and a tightening assembly, the fixed jaw and the tightening assembly are arranged at the same end of the clamp handle, and a handle is arranged at the other end of the clamp handle. The interior of the fixed jaw is hollow and a driving wheel is rotatably arranged. The outer edge of the driving wheel protrudes from the side of the fixed jaw, and a motor and a reduction box are arranged on the outer side surface of the fixed jaw. The reduction box contains a meshing worm gear group, the output shaft of the motor is connected to the worm, and the mounting shaft of the worm wheel is connected to the mounting shaft of the driving wheel.

[0005] As a preferred technical solution of the present invention, the clamping assembly includes a movable jaw, a rotating assembly and a clamping rod, the end of the clamping rod is connected to the movable jaw, the connection between the clamping rod and the movable jaw is rotatably installed on the end of the clamp handle, and the rotating assembly is rotatably installed on the side of the movable jaw close to the driving wheel. The rotating assembly includes a rotating pin, a latch hole and a brake pin. A mounting cam is provided at the center of the end surfaces of both sides of the rotating pin. The rotating pin is rotatably set on the movable jaw through the mounting cam. The outer edge of the rotating pin protrudes from the side of the movable jaw. A brake hole is provided on the end surface of the rotating pin. The latch hole is provided on the movable jaw. When the rotating pin is in a braking state, the brake pin is inserted into the brake hole and the latch hole.

[0006] As a preferred technical solution of the present invention, the tightening assembly includes a movable jaw, a rotating assembly, a guide rod and a screw, the guide rod and the screw are fixed at the end of the jaw handle, the end of the movable jaw can be slidably mounted on the guide rod and the screw, the screw is mounted with a screw sleeve, a rectangular groove is provided at the end of the movable jaw, the screw sleeve is located in the rectangular groove, a rotating assembly is rotatably installed on the side of the movable jaw close to the driving wheel, the rotating assembly includes a rotating pin, a latch hole and a brake pin, a mounting cam is provided at the center of the end faces of both sides of the rotating pin, the rotating pin is rotatably set on the movable jaw through the mounting cam, the outer edge of the rotating pin protrudes from the side of the movable jaw, a brake hole is provided on the end face of the rotating pin, the latch hole is provided on the movable jaw, and when the rotating pin is in a braking state, the brake pin is inserted into the brake hole and the latch hole.

[0007] As a preferred technical solution of the present invention, the tightening assembly includes a movable jaw and a rotating assembly, the movable jaw is rotatably mounted on the end of the jaw handle, and the rotating assembly is rotatably mounted on the side of the movable jaw close to the driving wheel, the rotating assembly includes a rotating pin, a latch hole and a brake pin, mounting cams are provided at the centers of the end surfaces of both sides of the rotating pin, the rotating pin is rotatably set on the movable jaw through the mounting cams, a circular mounting groove is provided on the outer surface of the movable jaw, the mounting cam is located in the mounting groove, a ratchet is sleeved on the mounting cam, a stop spring is provided on the inner side surface of the mounting groove, the end of the stop spring is located in the tooth groove of the ratchet, the outer edge of the rotating pin protrudes from the side of the movable jaw, a brake hole is provided on the end surface of the rotating pin, and the latch hole is provided on the movable jaw. When the rotating pin is in a braking state, the brake pin is inserted in the brake hole and the latch hole.

[0008] As a preferred technical solution of the present invention, a rubber sleeve is provided on the handle.

[0009] As a preferred technical solution of the present invention, the outer sleeve of the driving wheel is provided with a rubber sleeve.

[0010] As a preferred technical solution of the present invention, a knurling pattern is pressed on the arc side surface of the driving wheel.

[0011] As a preferred technical solution of the present invention, a handle is provided at the outer end of the brake pin, and a clamping spring is provided on the side of the brake pin. When the brake pin is inserted into the brake hole and the pin hole, the clamping spring elastically contacts the inner wall of the brake hole.

[0012] As a preferred technical solution of the present invention, the outer side surface of the rotating pin is covered with a rubber sleeve or pressed with a knurling pattern.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the manual and semi-automatic dual-mode steel bar socket wrench realizes the tightening or disassembly of the socket through motor drive, which can significantly improve the working efficiency and reduce the labor intensity. When the power supply in the use environment is limited, the wrench can also be used manually, which improves the applicability and convenience of the wrench. The structure of the wrench is relatively simple, the stability is good, and the later maintenance is relatively easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the tightening assembly of the present invention;

[0018] Figure 5 It is a schematic diagram of the structure of the rotating assembly of the present invention.

[0019] In the figure: 1 clamp handle, 2 fixed jaws, 3 tightening assembly, 31 movable jaws, 32 rotating assembly, 321 rotating pin, 322 mounting cam, 323 brake hole, 324 pin hole, 325 brake pin, 326 clamping spring, 327 grip, 33 clamping rod, 34 guide rod, 35 screw rod, 36 screw sleeve, 37 mounting groove, 38 ratchet, 39 stop spring, 4 motor, 5 reduction box, 6 drive wheel, 7 grip. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-5The present invention provides a technical solution: a manual and semi-automatic dual-mode steel bar socket wrench, comprising a clamp handle 1, a fixed jaw 2 and a tightening component 3, the fixed jaw 2 and the tightening component 3 are arranged at the same end of the clamp handle 1, and a grip 7 is arranged at the other end of the clamp handle 1, and a rubber sleeve is sleeved on the grip 7 to prevent workers from slipping during operation. The interior of the fixed jaw 2 is hollow and a driving wheel 6 is rotatably arranged. The outer edge of the driving wheel 6 protrudes from the side of the fixed jaw 2, and the tightening component 3 presses the sleeve to be tightened on the driving wheel 6. The rotating driving wheel 6 drives the sleeve to rotate under the action of friction force, so as to achieve the purpose of tightening or removing the sleeve. The outer sleeve of the driving wheel 6 is sleeved with a rubber sleeve or pressed with a knurling pattern to improve the friction when the driving wheel 6 contacts the sleeve. A motor 4 and a reduction gear box 5 are provided on the outer side surface of the jaws 2. A meshing worm gear group is inside the reduction gear box 5. The output shaft of the motor 4 is connected to the worm, and the mounting shaft of the worm wheel is connected to the mounting shaft of the drive wheel 6. The reduction gear box 5 serves to amplify the output torque of the motor 4 to ensure that the drive wheel 6 has sufficient torque to twist the sleeve. The worm adopts a single-line worm with a helix angle smaller than the friction angle, so that the meshing worm gear group can only transmit torque in one direction from the worm to the worm wheel. When the motor 4 stops rotating, the drive wheel 6 will be locked by the meshing worm gear group and will no longer rotate. Therefore, the wrench can be used manually. The worker pulls the pliers handle 1, and the sleeve rotates under the action of friction, thereby achieving the purpose of manually twisting the sleeve, thereby improving the applicability and convenience of the wrench.

[0022] Example 1

[0023] See also Figure 1 and Figure 5The present invention provides a technical solution: a manual and semi-automatic dual-mode steel bar socket wrench, comprising a clamp handle 1, a fixed jaw 2 and a tightening assembly 3, the fixed jaw 2 and the tightening assembly 3 are arranged at the same end of the clamp handle 1, the interior of the fixed jaw 2 is hollow and a driving wheel 6 is rotatably arranged, the outer edge of the driving wheel 6 protrudes from the side of the fixed jaw 2, the tightening assembly 3 tightens the sleeve to be tightened on the driving wheel 6, and the rotating driving wheel 6 drives the sleeve to rotate under the action of friction, so as to achieve the purpose of tightening or removing the sleeve, a motor 4 and a reduction box 5 are arranged on the outer side surface of the fixed jaw 2, the reduction box 5 contains a meshing worm gear group, the output shaft of the motor 4 is connected to the worm, the mounting shaft of the worm wheel is connected to the mounting shaft of the driving wheel 6, and the reduction box 5 serves to amplify the output of the motor 4 The effect of torque is to ensure that the driving wheel 6 has enough torque to twist the sleeve. The worm adopts a single-line worm with a helix angle smaller than the friction angle, so that the meshing worm gear group can only transmit torque in one direction from the worm to the worm wheel. When the motor 4 stops rotating, the driving wheel 6 will be locked by the meshing worm gear group and will no longer rotate. Therefore, the wrench can be used manually. The worker pulls the pliers handle 1, and the sleeve rotates under the action of friction to achieve the purpose of manually twisting the sleeve, thereby improving the applicability and convenience of the wrench. The tightening assembly 3 includes a movable jaw 31, a rotating assembly 32 and a clamping rod 33. The end of the clamping rod 33 is connected to the movable jaw 31, and the connection between the clamping rod 33 and the movable jaw 31 is rotatably installed on the end of the clamp handle 1. The clamping rod 33 and the clamp handle 1 form a The structure is similar to scissors. When the clamping rod 33 approaches the clamp handle 1 under the operation of the worker, the movable jaw 31 will approach the fixed jaw 2, and finally clamp the sleeve between the movable jaw 31 and the fixed jaw 2. A rotating assembly 32 is rotatably installed on the side of the movable jaw 31 close to the driving wheel 6. The rotating assembly 32 includes a rotating pin 321, a pin hole 324 and a brake pin 325. The centers of the end surfaces of both sides of the rotating pin 321 are provided with mounting cams 322. The rotating pin 321 is rotatably set on the movable jaw 31 through the mounting cams 322. The outer edge of the rotating pin 321 protrudes from the side of the movable jaw 31. There are two rotating pins 321. When the movable jaw 31 and the fixed jaw 2 clamp the sleeve, the driving wheel 6 and the two rotating pins 321 are sleeved. The sleeve forms three tightening points, and the driving wheel 6 rotates, and the sleeve is driven to rotate under the action of friction, so as to achieve the purpose of tightening or removing the sleeve. At this time, the two rotating pins 321 only play the role of tightening the sleeve, and will not hinder the rotation of the sleeve. The outer side surface of the rotating pin 321 is sleeved with a rubber sleeve or pressed with a knurling pattern to increase the friction force. A braking hole 323 is provided on the end surface of the rotating pin 321, and a pin hole 324 is provided on the movable jaw 31. When the braking pin 325 is inserted into the braking hole 323 and the pin hole 324, the rotating pin 321 is in a braking state. At this time, the two rotating pins 321 will no longer rotate, and cooperate with the driving wheel 6 locked by the reduction box 5 to form three clamping points for the sleeve. Therefore, the wrench can be used manually. The worker pulls the pliers handle 1,The sleeve rotates under the action of friction force to achieve the purpose of manually twisting the sleeve, which improves the applicability and convenience of the wrench. The outer end of the brake pin 325 is provided with a grip 327, which is convenient for inserting and removing the brake pin 325. The side of the brake pin 325 is provided with a clamping spring 326. When the brake pin 325 is inserted into the brake hole 323 and the pin hole 324, the clamping spring 326 elastically contacts the inner wall of the brake hole 323. Under the action of friction force, the brake pin 325 is not easy to slip out when inserted into the brake hole 323 and the pin hole 324.

[0024] Example 2

[0025] See also Figure 2 and Figure 5The present invention provides a technical solution: a manual and semi-automatic dual-mode steel bar socket wrench, comprising a clamp handle 1, a fixed jaw 2 and a tightening assembly 3, the fixed jaw 2 and the tightening assembly 3 are arranged at the same end of the clamp handle 1, the interior of the fixed jaw 2 is hollow and a driving wheel 6 is rotatably arranged, the outer edge of the driving wheel 6 protrudes from the side of the fixed jaw 2, the tightening assembly 3 tightens the sleeve to be tightened on the driving wheel 6, and the rotating driving wheel 6 drives the sleeve to rotate under the action of friction, so as to achieve the purpose of tightening or removing the sleeve, a motor 4 and a reduction box 5 are arranged on the outer side surface of the fixed jaw 2, the reduction box 5 contains a meshing worm gear group, the output shaft of the motor 4 is connected to the worm, the mounting shaft of the worm wheel is connected to the mounting shaft of the driving wheel 6, and the reduction box 5 serves to amplify the output torque of the motor 4 The worm adopts a single-line worm with a helix angle smaller than the friction angle, so that the meshing worm gear group can only transmit torque in one direction from the worm to the worm wheel. When the motor 4 stops rotating, the driving wheel 6 will be locked by the meshing worm gear group and will no longer rotate. Therefore, the wrench can be used manually. The worker pulls the pliers handle 1, and the sleeve rotates under the action of friction to achieve the purpose of manually twisting the sleeve, thereby improving the applicability and convenience of the wrench. The tightening assembly 3 includes a movable jaw 31, a rotating assembly 32, a guide rod 34 and a screw 35. The guide rod 34 and the screw 35 are fixed to the end of the pliers handle 1, and the end of the movable jaw 31 can be slidably sleeved on the guide rod 34 and the screw 35. The screw 35 is sleeved There is a screw sleeve 36, and a rectangular groove is set at the end of the movable jaw 31. The screw sleeve 36 is located in the rectangular groove. The worker rotates the screw sleeve 36 in the rectangular groove at the end of the movable jaw 31. Under the limiting action of the screw rod 35 and the guide rod 34, the movable jaw 31 can be driven to approach or move away from the fixed jaw 2 to achieve the purpose of clamping or loosening the sleeve. A rotating assembly 32 is rotatably installed on the side of the movable jaw 31 close to the driving wheel 6. The rotating assembly 32 includes a rotating pin 321, a pin hole 324 and a brake pin 325. The centers of the end surfaces of both sides of the rotating pin 321 are provided with mounting cams 322. The rotating pin 321 is rotatably set on the movable jaw 31 through the mounting cams 322. The outer edge of the rotating pin 321 protrudes from the side of the movable jaw 31. The number of rotating pins 321 The two rotating pins 321 are two. When the movable jaw 31 and the fixed jaw 2 clamp the sleeve, the driving wheel 6 and the two rotating pins 321 form three tightening points on the sleeve. The driving wheel 6 rotates, and the sleeve is driven to rotate under the action of friction, so as to achieve the purpose of tightening or removing the sleeve. At this time, the two rotating pins 321 only play the role of tightening the sleeve and will not hinder the rotation of the sleeve. The outer side surface of the rotating pin 321 is sleeved with a rubber sleeve or pressed with a knurling pattern to increase the friction. A braking hole 323 is provided on the end surface of the rotating pin 321, and a pin hole 324 is provided on the movable jaw 31. When the braking pin 325 is inserted into the braking hole 323 and the pin hole 324, the rotating pin 321 is in a braking state. At this time, the two rotating pins 321 will no longer rotate, and cooperate with the driving wheel 6 locked by the reduction box 5.Three clamping points are formed on the sleeve, so the wrench can be used manually. When the worker pulls the pliers handle 1, the sleeve rotates under the action of friction, and the purpose of manually twisting the sleeve is achieved, which improves the applicability and convenience of the wrench. The outer end of the brake pin 325 is provided with a grip 327, and the side of the brake pin 325 is provided with a clamping spring 326. When the brake pin 325 is inserted into the brake hole 323 and the pin hole 324, the clamping spring 326 elastically contacts the inner wall of the brake hole 323, and under the action of friction, the brake pin 325 is not easy to slip out when inserted into the brake hole 323 and the pin hole 324.

[0026] Example 3

[0027] See also Figure 3 , Figure 4 and Figure 5The present invention provides a technical solution: a manual and semi-automatic dual-mode steel bar socket wrench, comprising a clamp handle 1, a fixed jaw 2 and a tightening assembly 3, the fixed jaw 2 and the tightening assembly 3 are arranged at the same end of the clamp handle 1, the fixed jaw 2 is hollow inside and is rotatably provided with a driving wheel 6, the outer edge of the driving wheel 6 protrudes from the side of the fixed jaw 2, the tightening assembly 3 tightens the sleeve to be tightened on the driving wheel 6, and the rotating driving wheel 6 drives the sleeve to rotate under the action of friction, so as to achieve the purpose of tightening or removing the sleeve, a motor 4 and a reduction box 5 are arranged on the outer side of the fixed jaw 2, a meshing worm gear group is inside the reduction box 5, the output shaft of the motor 4 is connected to the worm, the mounting shaft of the worm wheel is connected to the mounting shaft of the driving wheel 6, and the reduction box 5 plays the role of amplifying the output of the motor 4 The torque is exerted to ensure that the driving wheel 6 has enough torque to twist the sleeve. The worm adopts a single-line worm with a helix angle smaller than the friction angle, so that the meshing worm gear group can only transmit torque in one direction from the worm to the worm wheel. When the motor 4 stops rotating, the driving wheel 6 will be locked by the meshing worm gear group and will no longer rotate. Therefore, the wrench can be used manually. The worker pulls the pliers handle 1, and the sleeve rotates under the action of friction to achieve the purpose of manually twisting the sleeve, thereby improving the applicability and convenience of the wrench. The tightening assembly 3 includes a movable jaw 31 and a rotating assembly 32. The movable jaw 31 is rotatably installed at the end of the pliers handle 1, and the rotating assembly 32 is rotatably installed on the side of the movable jaw 31 close to the driving wheel 6. The rotating assembly 32 includes a rotating pin 321 The movable jaw 31 is provided with a circular mounting groove 37 on the outer surface of the movable jaw 31, and the mounting cam 322 is located in the mounting groove 37. A ratchet 38 is sleeved on the mounting cam 322. A stop spring 39 is provided on the inner side surface of the mounting groove 37. The end of the stop spring 39 is located in the tooth groove of the ratchet 38. The ratchet 38 cooperates with the stop spring 39 to make the rotating pin 321 only rotate in one direction. The sleeve to be tightened is placed between the movable jaw 31 and the fixed jaw 2. The grip 7 is held and the pliers handle 1 is rotated clockwise. The rotating pin 321, which can only rotate in one direction, is locked in the friction force. The movable jaw 31 bites the sleeve under the action. At this time, starting the motor 4 can drive the driving wheel 6 to rotate. The outer edge of the rotating pin 321 protrudes from the side of the movable jaw 31. There are two rotating pins 321. When the movable jaw 31 and the fixed jaw 2 bite the sleeve, the driving wheel 6 and the two rotating pins 321 form three tightening points on the sleeve. The driving wheel 6 rotates and drives the sleeve to rotate under the action of friction to achieve the purpose of tightening or removing the sleeve. At this time, the two rotating pins 321 only play the role of tightening the sleeve and will not hinder the rotation of the sleeve. The outer side surface of the rotating pin 321 is covered with a rubber sleeve or pressed with a knurling pattern to increase friction. A braking hole 323 is provided on the end face of the rotating pin 321, and a pin hole 324 is provided on the movable jaw 31.When the brake pin 325 is inserted into the brake hole 323 and the latch hole 324, the rotating pin 321 is in a braking state. At this time, the two rotating pins 321 will no longer rotate, and cooperate with the driving wheel 6 locked by the reduction box 5 to form three clamping points for the sleeve. Therefore, the wrench can be used manually. The worker pulls the pliers handle 1, and the sleeve rotates under the action of friction, so the purpose of manually twisting the sleeve is achieved, which improves the applicability and convenience of the wrench. The outer end of the brake pin 325 is provided with a grip 327, and the side of the brake pin 325 is provided with a clamping spring 326. When the brake pin 325 is inserted into the brake hole 323 and the latch hole 324, the clamping spring 326 elastically contacts the inner wall of the brake hole 323. Under the action of friction, the brake pin 325 is not easy to slip out when it is inserted into the brake hole 323 and the latch hole 324.

Claims

1. A manual and semi-automatic dual-mode steel bar socket wrench, comprising a clamp handle (1), a fixed jaw (2) and a tightening assembly (3), wherein the fixed jaw (2) and the tightening assembly (3) are arranged at the same end of the clamp handle (1), and a grip (7) is arranged at the other end of the clamp handle (1), characterized in that: The interior of the fixed jaw (2) is hollow and rotatably provided with a driving wheel (6), the outer edge of the driving wheel (6) protrudes from the side of the fixed jaw (2), the outer side of the fixed jaw (2) is provided with a motor (4) and a reduction box (5), the reduction box (5) contains a meshing worm gear set, the output shaft of the motor (4) is connected to the worm, and the mounting shaft of the worm wheel is connected to the mounting shaft of the driving wheel (6); The clamping assembly (3) comprises a movable jaw (31) and a rotating assembly (32). The movable jaw (31) is rotatably mounted on the end of the jaw handle (1). The rotating assembly (32) is rotatably mounted on the side of the movable jaw (31) close to the driving wheel (6). The rotating assembly (32) comprises a rotating pin (321), a pin hole (324) and a brake pin (325). The centers of the end surfaces of both sides of the rotating pin (321) are provided with mounting convex shafts (322). The rotating pin (321) is rotatably mounted on the movable jaw (31) via the mounting convex shafts (322). The outer surface of the movable jaw (31) is provided with a circular mounting groove ( 37), the mounting convex shaft (322) is located in the mounting groove (37), the mounting convex shaft (322) is sleeved with a ratchet (38), a stop spring (39) is arranged on the inner side surface of the mounting groove (37), the end of the stop spring (39) is located in the tooth groove of the ratchet (38), the outer edge of the rotating pin (321) protrudes from the side surface of the movable jaw (31), a braking hole (323) is arranged on the end surface of the rotating pin (321), and a latch hole (324) is arranged on the movable jaw (31), when the rotating pin (321) is in a braking state, the braking pin (325) is inserted into the braking hole (323) and the latch hole (324); The outer end of the brake pin (325) is provided with a handle (327), and the side of the brake pin (325) is provided with a clamping spring (326). When the brake pin (325) is inserted into the brake hole (323) and the pin hole (324), the clamping spring (326) elastically contacts the inner wall of the brake hole (323); The outer side surface of the rotating pin (321) is sleeved with a rubber sleeve or pressed with a knurled pattern.

2. A manual and semi-automatic dual-mode steel bar socket wrench according to claim 1, characterized in that: The handle (7) is sleeved with a rubber sleeve.

3. A manual and semi-automatic dual-mode steel bar socket wrench according to claim 1, characterized in that: The outer cover of the driving wheel (6) is provided with a rubber cover.

4. A manual and semi-automatic dual-mode steel bar socket wrench according to claim 1, characterized in that: A knurling pattern is pressed on the arc side surface of the driving wheel (6).

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