An electric wrench

Abstract

The application discloses an electric wrench, which comprises a handle, a connecting plate is symmetrically arranged on the top of the handle, an adjusting box is fixedly arranged on the top of the connecting plate, a rotating rod is movably arranged on the bottom of the inner cavity of the adjusting box, a ratchet wheel is fixedly arranged on the bottom of the outer surface of the rotating rod, a ratchet claw is movably arranged on the bottom of the inner cavity of the adjusting box, the ratchet claw is meshed with the gear of the ratchet wheel on one side, an extension rod and a pull rope are fixedly arranged on the side, away from the ratchet wheel, of the ratchet claw respectively, the other side of the extension rod is fixedly connected with the inner wall of the adjusting box, and the other side of the pull rope penetrates through the adjusting box and is fixedly provided with a pulling disc. The electric wrench is provided with a safe connecting component, the tightness of the fixing belt is adjusted according to the wrist of the staff, the staff does not need to hold the electric wrench for a long time, the safety and practicability are improved, the filter plate can be disassembled and cleaned, and the service life of the electric wrench is improved.

Description

Technical Field

[0001] This invention relates to the field of electric wrench technology, specifically to an electric wrench. Background Technology

[0002] An electric wrench is a wrench powered by an electric source or battery, used for tightening bolts. It is a power tool for tightening and loosening bolts and nuts, and is particularly useful for tightening high-strength bolts. Electric wrenches are used for initial tightening and final tightening of high-strength bolts in steel structure bridges, factory buildings, chemical plants, and power generation equipment installation, as well as for initial tightening of torque-shear type high-strength bolts, and in situations where strict requirements are placed on the torque or axial force of bolt fasteners.

[0003] During construction, electric wrenches are often used to loosen and tighten fasteners. However, existing electric wrenches lack safety connecting parts. When working at heights, workers need to hold the wrench for extended periods. If they lose their grip, the wrench may fall from a height, damaging itself and potentially injuring people or objects below, posing a safety hazard and reducing its practicality and safety. Secondly, after prolonged use, electric wrenches accumulate a lot of dust that cannot be cleaned. Over time, this can damage the internal components and shorten the wrench's lifespan. Summary of the Invention

[0004] The purpose of this invention is to provide an electric wrench that solves the technical problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electric wrench, including a handle, with connecting plates symmetrically arranged on the top of the handle, an adjusting box fixedly arranged on the top of the connecting plates, a rotating rod movably arranged at the bottom of the inner cavity of the adjusting box, a ratchet fixedly sleeved on the bottom of the outer surface of the rotating rod, a pawl movably arranged at the bottom of the inner cavity of the adjusting box, one side of the pawl meshing with the gear of the ratchet, a telescopic rod and a pull rope fixedly arranged on the side of the pawl away from the ratchet, and the other side of the telescopic rod engaging with the adjusting box. The inner wall is fixedly connected, and the other side of the pull rope passes through the adjustment box and is fixedly installed with a pull plate. The outer surface of the rotating rod is movably fitted with a fixing belt. An adjustment knob is fixedly installed at the top of the rotating rod. Bolts are installed through both sides of the top of the connecting plate. The bottom of the bolts extends through to the inner cavity of the handle. A transmission component is snapped into the inner cavity of the handle. A front housing is fixedly installed on one side of the handle. A battery pack is fixedly installed on the other side of the handle. A detachable heat dissipation component is installed through the housing of the battery pack on the side away from the handle.

[0006] Optionally, the transmission component includes a motor housing, the outer wall of which is snapped into the inner wall of the handle. A motor is fixedly mounted inside the motor housing. A sun gear is fixedly sleeved on the outer surface of the motor output shaft. Three sets of planetary gears, equally spaced, mesh with the gears on the outer surface of the sun gear. A gearbox is meshed with the outer surfaces of the planetary gears. A shaft holder is fixedly mounted on the side of the planetary gears away from the motor. A buffer sleeve and a reducer are movably sleeved on the outer surface of the shaft holder away from the gearbox, with the buffer sleeve and the reducer opposite to each other. A buffer spring is fixedly installed in the inner cavity on one side. The buffer spring is movably sleeved on the outer surface of the shaft frame. A fixing block is fixedly sleeved on the side of the shaft frame away from the gearbox. A sleeve is fixedly sleeved on the side of the fixing block away from the shaft frame. A driving bevel gear is fixedly sleeved on the side of the sleeve away from the fixing block. A support sleeve is movably installed on the side of the driving bevel gear close to the fixing block. The support sleeve is movably sleeved on the outer surface of the sleeve. A driven bevel gear is meshed at the bottom of the outer surface of the driving bevel gear. An installation head is meshed in the inner cavity of the driven bevel gear.

[0007] Optionally, the detachable heat dissipation component includes a placement slot that extends through the housing of the battery pack on the side away from the handle. The placement slot has symmetrically arranged sliding grooves at its top and bottom. A filter plate is slidably placed inside the placement slot. Slider blocks are symmetrically arranged at the top and bottom of the filter plate. The outer wall of the slider is slidably disposed within the sliding groove. An anode magnet is fixedly disposed on the outer side of the slider. Mounting boxes are fixedly disposed on the outer wall of the battery pack, located at the top and bottom of the placement slot. A disassembly groove for use with the sliding groove is provided on the opposite side of the mounting box. A limiting groove is provided on the opposite side of the mounting box's inner cavity. A limiting block is slidably disposed within the limiting groove. A moving block is fixedly disposed on the opposite side of the limiting block. A connecting rod extends through the inner cavity of the moving block. A cathode magnet is fixedly disposed on the side of the connecting rod near the anode magnet. A pull plate is fixedly disposed on the other side of the connecting rod. A limiting spring is movably sleeved on the outer surface of the connecting rod.

[0008] Optionally, the disassembly groove is symmetrically provided with locking blocks on both sides, and the top of the pull plate is symmetrically provided with two sets of bearing seats. The inner cavity of the bearing seat is threaded with a threaded rod, and the outer surface of the threaded rod located inside the bearing seat is threaded with an anti-slip locking plate that cooperates with the locking blocks. The two sides of the threaded rod pass through the bearing seat and are fixedly fitted with threaded knobs.

[0009] Optionally, the bottom of the ratchet is movably connected to the bottom of the inner cavity of the adjustment box, the bottom of the pawl is in sliding contact with the bottom of the inner cavity of the adjustment box, the outer surface of the adjustment knob is provided with an anti-slip groove, and the inner cavity of the adjustment box is provided with an opening for use with the pull rope.

[0010] Optionally, the anode magnet is attracted to the cathode magnet, one side of the limiting spring is fixedly connected to the inner side of the pull plate, and the other side of the limiting spring is fixedly connected to the outer side of the moving block.

[0011] Optionally, the outer surfaces of the support sleeve, the reducer, the buffer sleeve, and the gearbox are all engaged with the inner wall of the front housing.

[0012] Optionally, a switch is provided through the bottom of the grip, and a storage battery is movably disposed inside the battery pack.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] I. In high-altitude operations during construction projects, the worker's wrist, gripping the handle, is threaded through the fixing strap. By pulling the pull disc, the worker adjusts the position of the pawl, disengaging it from the ratchet. This allows the adjusting knob to rotate the lever clockwise. Once the cable has been released to the desired length, pulling the pull disc is stopped. The telescopic lever, through the rebound force generated by the internal spring, re-engages the pawl with the ratchet teeth, fixing the cable length and preventing self-release. When retracting the cable, the adjusting knob is turned counter-clockwise, causing the lever at the bottom to retract the cable. The pawl prevents self-release of the cable from the lever surface. The tightness of the fixing strap is adjustable according to wrist size, reducing the worker's strain on the hand by not gripping the wrench for extended periods. This prevents the wrench from falling from heights, improving the safety, practicality, and worker comfort of the wrench.

[0015] Second, when the fixing strap is severely worn and needs to be disassembled and replaced, the bolts on the top of the connecting plate can be loosened by using another wrench, so that the connecting plate is disconnected from the handle, and the fixing strap and its connecting parts can be disassembled and replaced. The structure is simple and the disassembly is convenient, which improves the practicality of the electric wrench to a certain extent.

[0016] Third, this invention uses a filter plate to block and adsorb dust and impurities, reducing the amount of dust entering the electric wrench. When the filter plate needs to be disassembled and cleaned, first turn the threaded knob on one side, causing it to move the inner threaded rod and the surface anti-slip plate upwards in a circular trajectory, disengaging from the locking state with the locking block. Next, pull the pull plate outwards, causing the inner connecting rod and the cathode magnet to move outwards synchronously until the cathode magnet enters the moving block, thus releasing the adsorption state between the cathode magnet and the anode magnet. Then, move the pull plate to the left or right, causing it to move the rear moving block synchronously within the mounting box, ensuring that the moving block does not obstruct the rear sliding groove. Then, the slider moves outwards within the sliding groove, moving the filter plate out of the placement slot for disassembly. Installation is the reverse operation, facilitating the disassembly and installation of the filter plate and cleaning dust. This prevents dust from damaging the internal components of the electric wrench, thus improving the service life and practicality of the electric wrench to a certain extent. Attached Figure Description

[0017] Figure 1 This is a front view of the structure of the present invention;

[0018] Figure 2 This is a front cross-section of the transmission component of the present invention. Figure 1 ;

[0019] Figure 3 This is a front cross-section of the transmission component of the present invention. Figure 2 ;

[0020] Figure 4 This is a front view of the regulating box structure of the present invention;

[0021] Figure 5 This is a front sectional view of the regulating box structure of the present invention;

[0022] Figure 6 This is a top view of the ratchet and pawl structure of the present invention;

[0023] Figure 7 This is a side view of the detachable heat dissipation component of the present invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged view of the A-structure in the middle;

[0025] Figure 9 This is a front sectional view of the detachable heat dissipation component of the present invention.

[0026] In the diagram: 1-Front housing, 2-Grip, 3-Switch, 4-Battery pack, 5-Fixing strap, 6-Driving bevel gear, 7-Driven bevel gear, 8-Mounting head, 9-Support sleeve, 10-Sleeve, 11-Fixing block, 12-Reducer, 13-Buffer sleeve, 14-Shaft bracket, 15-Gearbox, 16-Motor housing, 19-Buffer spring, 20-Sun gear, 21-Planetary gear, 22-Motor, 23-Adjusting knob, 24-Rotor, 25-Adjusting box, 26-Screw 27-Connecting plate, 28-Pawl, 29-Ratchet, 30-Telescopic rod, 31-Pull rope, 32-Pull disc, 33-Placement slot, 34-Installation box, 35-Filter plate, 36-Slider, 37-Clamping block, 38-Anti-slip clamping plate, 39-Threaded rod, 40-Pull plate, 41-Threaded knob, 42-Connecting rod, 43-Cathode magnet, 44-Anode magnet, 45-Limiting block, 46-Moving block, 47-Limiting groove, 48-Slide groove, 49-Limiting spring. Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0028] Please see Figures 1 to 9 The present invention provides a technical solution: an electric wrench, including a handle 2, a connecting plate 27 symmetrically arranged on the top of the handle 2, an adjusting box 25 fixedly arranged on the top of the connecting plate 27, a rotating rod 24 movably arranged at the bottom of the inner cavity of the adjusting box 25, a ratchet 29 fixedly sleeved on the bottom of the outer surface of the rotating rod 24, a pawl 28 movably arranged at the bottom of the inner cavity of the adjusting box 25, one side of the pawl 28 meshing with the gear of the ratchet 29, and a telescopic rod 30 and a pull rope fixedly arranged on the side of the pawl 28 away from the ratchet 29. 31. The other side of the telescopic rod 30 is fixedly connected to the inner wall of the adjustment box 25. The other side of the pull rope 31 passes through the adjustment box 25 and is fixedly provided with a pull plate 32. The outer surface of the rotating rod 24 is movably fitted with a fixing belt 5. The top of the rotating rod 24 is fixedly provided with an adjustment knob 23. Bolts 26 are provided through both sides of the top of the connecting plate 27. The bottom of the bolts 26 extends through to the inner cavity of the handle 2.

[0029] More specifically, in this embodiment, during high-altitude operations in construction engineering, the worker passes the wrist of the worker holding the handle 2 through the fixing belt 5, and then pulls the pull plate 32 to adjust the position of the pull rope 31 on the pawl 28, canceling the engagement of the pawl 28 with the ratchet 29, so that the adjusting knob 23 can drive the rotating rod 24 to rotate clockwise. When the fixing belt 5 has released the line to the appropriate length, the pull plate 32 is released, and the telescopic rod 30 uses the rebound force generated by the internal spring to make the pawl 28 re-engage with the teeth of the ratchet 29, fixing the length of the released line and preventing the line from being released by itself.

[0030] When it is necessary to reel in the cable of the fixing strap 5, the adjusting knob 23 can be turned counterclockwise to allow the rotating rod 24 at the bottom to reel in the cable. The pawl 28 prevents the cable of the fixing strap 5 from being released from the surface of the rotating rod 24. The tightness of the fixing strap 5 can be adjusted according to the size of the wrist, so that the operator does not have to hold the wrench tightly for a long time, which relieves the pressure on the hand and ensures that the wrench will not fall from a height, thus improving the safety, practicality and comfort of the wrench. When the fixing strap 5 is severely worn and needs to be disassembled and replaced, the bolt 26 on the top of the connecting plate 27 can be loosened with another wrench to disconnect the connecting plate 27 from the handle 2, and the fixing strap 5 and its connecting parts can be disassembled and replaced. The structure is simple and the disassembly is convenient, which improves the practicality of the wrench to a certain extent.

[0031] Furthermore, the transmission components include a motor housing 16, the outer wall of which is snapped into the inner wall of the handle 2. A motor 22 is fixedly mounted inside the motor housing 16. A sun gear 20 is fixedly sleeved on the outer surface of the output shaft of the motor 22. Three sets of planetary gears 21, equally spaced, are meshed on the gear portion of the outer surface of the sun gear 20. A gearbox 15 is meshed on the outer surface of the planetary gears 21. A shaft holder 14 is fixedly mounted on the side of the planetary gears 21 away from the motor 22. A buffer sleeve 13 and a reducer 12 are movably sleeved on the outer surface of the shaft holder 14 away from the gearbox 15. The buffer sleeve 13 and the reducer 12... A buffer spring 19 is fixedly installed in the inner cavity on one side of the shaft frame 14. The buffer spring 19 is movably sleeved on the outer surface of the shaft frame 14. A fixing block 11 is fixedly sleeved on the side of the shaft frame 14 away from the gearbox 15. A sleeve 10 is fixedly sleeved on the side of the fixing block 11 away from the shaft frame 14. A driving bevel gear 6 is fixedly sleeved on the side of the sleeve 10 away from the fixing block 11. A support sleeve 9 is movably installed on the side of the driving bevel gear 6 close to the fixing block 11. The support sleeve 9 is movably sleeved on the outer surface of the sleeve 10. A driven bevel gear 7 is meshed at the bottom of the outer surface of the driving bevel gear 6. An installation head 8 is meshed in the inner cavity of the driven bevel gear 7.

[0032] It is worth noting that during the use of this electric wrench, the motor inside the motor housing 16 drives the sun gear 20 and planetary gear 21 to mesh. The planetary gear 21 meshes with the outer gearbox 15, driving the shaft frame 14 to rotate. At the same time, it drives the buffer sleeve 13 and the buffer spring 19 in the reducer 12 to continuously squeeze and reset. The shaft frame 14 drives the fixed block 11 and the sleeve 10 to rotate, causing the sleeve 10 to drive the driving bevel gear 6 to rotate. The driving bevel gear 6 meshes with the driven bevel gear 7, causing the driven bevel gear 7 to drive the internal mounting head 8 to rotate, and the electric wrench operates. Through the setting of the reducer 12, buffer sleeve 13 and buffer spring 19, the rotation speed of the fixed block 11 and sleeve 10 driven by the shaft frame 14 can be reduced, while vibration is buffered, noise generation is reduced, and the working efficiency and service life of the electric wrench are improved.

[0033] Furthermore, the detachable heat dissipation component includes a placement slot 33, which is formed through the housing of the battery pack 4 on the side away from the handle 2. The placement slot 33 has symmetrically formed sliding grooves 48 at its top and bottom. A filter plate 35 is slidably placed inside the placement slot 33. Slider blocks 36 are symmetrically arranged at the top and bottom of the filter plate 35. The outer wall of the slider 36 is slidably disposed within the inner cavity of the sliding groove 48. An anode magnet 44 is fixedly disposed on the outer side of the slider 36. Mounting boxes 34 are fixedly disposed on the outer wall of the battery pack 4 at both the top and bottom of the placement slot 33. A disassembly groove for use with the sliding groove 48 is formed on the opposite side of the mounting box 34. A limiting groove 47 is formed on the opposite side of the inner cavity of the mounting box 34. A limiting block 45 is slidably disposed within the inner cavity of the limiting groove 47. A moving block 46 is fixedly disposed on the opposite side of the limiting block 45. A connecting rod 42 is provided through the inner cavity of the moving block 46. A cathode magnet 43 is fixedly installed on the side of the connecting rod 42 near the anode magnet 44. A pull plate 40 is fixedly installed on the other side of the connecting rod 42. A limiting spring 49 is movably sleeved on the outer surface of the connecting rod 42. Clamping blocks 37 are symmetrically arranged on both sides of the disassembly groove. Two sets of bearing seats are symmetrically arranged on the top of the pull plate 40. A threaded rod 39 is threaded through the inner cavity of the bearing seat. An anti-slip clamping plate 38 for use with the clamping block 37 is threadedly sleeved on the outer surface of the threaded rod 39 located inside the bearing seat. Threaded knobs 41 are fixedly sleeved on both sides of the threaded rod 39 through the bearing seat. The anode magnet 44 and the cathode magnet 43 are attracted to each other. One side of the limiting spring 49 is fixedly connected to the inner side of the pull plate 40, and the other side of the limiting spring 49 is fixedly connected to the outer side of the moving block 46.

[0034] It is worth noting that when using this new type of electric wrench, the filter plate 35 blocks and adsorbs dust and impurities, reducing the amount of dust entering the wrench. When the filter plate 35 needs to be disassembled and cleaned, first turn the threaded knob 41 on one side, causing it to move the inner threaded rod 39 and the surface anti-slip plate 38 upward in a circular trajectory, disengaging from the locking state between them and the locking block 37. Next, pull the pull plate 40 on the surface of the mounting box 34 outward, causing it to move the inner connecting rod 42 and the cathode magnet 43 outward synchronously. The limit spring 49 is stretched until the cathode magnet 43 enters the moving block 46, so that the cathode magnet 43 and the anode magnet 44 are aligned. Cancel the adsorption state, then move the pull plate 40 to the left or right, causing it to move the rear moving block 46 synchronously within the mounting box 34. The moving block 46 moves the bottom limiting block 45 within the limiting groove 47, ensuring the stability of the moving block 46 and preventing it from obstructing the rear sliding groove 48. Then, the slider 36 moves outward within the sliding groove 48, moving the filter plate 35 out of the placement groove 33 for disassembly. Installation is done by reversing the operation, facilitating the disassembly and installation of the filter plate 35 and cleaning dust. This prevents dust from damaging the internal components of the electric wrench, thus improving the service life and practicality of the electric wrench to a certain extent. Example

[0035] Further, based on the above embodiments, the bottom of the ratchet 29 is movably connected to the bottom of the inner cavity of the adjustment box 25, the bottom of the pawl 28 is in sliding contact with the bottom of the inner cavity of the adjustment box 25, the outer surface of the adjustment knob 23 is provided with an anti-slip groove, the inner cavity of the adjustment box 25 is provided with an opening for use with the pull rope 31, the outer surface of the support sleeve 9, the outer surface of the reducer 12, the outer surface of the buffer sleeve 13 and the outer surface of the gearbox 15 are all engaged with the inner wall of the front housing 1, the bottom of the handle 2 is provided with a switch 3, and the inner cavity of the battery pack 4 is movably provided with a storage battery.

[0036] More specifically, in this embodiment, the outer surfaces of the support sleeve 9, the reducer 12, the buffer sleeve 13, and the gearbox 15 are uniformly engaged with the front housing 1, ensuring the stability of the internal components of the electric wrench and preventing the internal components from falling off during operation and affecting the subsequent use of the electric wrench; by setting the switch 3, the opening and closing of the electric wrench can be controlled, and the battery in the battery pack 4 can provide power to the electric wrench, ensuring the connectivity and stability of the electric wrench.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric wrench, comprising a handle (2), characterized in that: A connecting plate (27) is symmetrically arranged on the top of the grip (2). An adjustment box (25) is fixedly arranged on the top of the connecting plate (27). A rotating rod (24) is movably arranged at the bottom of the inner cavity of the adjustment box (25). A ratchet (29) is fixedly sleeved on the bottom of the outer surface of the rotating rod (24). A pawl (28) is movably arranged at the bottom of the inner cavity of the adjustment box (25). One side of the pawl (28) meshes with the gear of the ratchet (29). The pawl (28) is fixedly provided with a telescopic rod (30) and a pull rope (31) on the side away from the ratchet (29). The other side of the telescopic rod (30) is fixedly connected to the inner wall of the adjustment box (25). The other side of the pull rope (31) passes through the adjustment box (25) and is fixedly provided with a pull disc (32). The outer surface of the rotating rod (24) is movably fitted with a fixing belt (5). The top of the rotating rod (24) is fixedly provided with an adjustment knob (23). Bolts (26) are provided through both sides of the top of the connecting plate (27). The bottom of the bolts (26) extends through to the inner cavity of the handle (2). The inner cavity of the grip (2) is fitted with a transmission component; A front housing (1) is fixedly provided on one side of the grip (2), and a battery pack (4) is fixedly provided on the other side of the grip (2). A detachable heat dissipation component is provided through the housing of the battery pack (4) on the side away from the grip (2). The detachable heat dissipation component includes a placement slot (33), which extends through the housing of the battery pack (4) on the side away from the handle (2). The top and bottom of the placement slot (33) are symmetrically provided with sliding grooves (48). A filter plate (35) is slidably placed inside the placement slot (33). Slider blocks (36) are symmetrically arranged at the top and bottom of the filter plate (35). The outer wall of the slider (36) is slidably disposed within the inner cavity of the sliding groove (48). An anode magnet (44) is fixedly disposed on the outer side of the slider (36). Mounting boxes (34) are fixedly disposed on the outer wall of the battery pack (4) at both the top and bottom of the placement slot (33). The mounting box (34) has a disassembly groove on one side opposite to the slide groove (48), and a limiting groove (47) is opened on the opposite side of the inner cavity of the mounting box (34). A limiting block (45) is slidably arranged in the inner cavity of the limiting groove (47). A moving block (46) is fixedly arranged on the opposite side of the limiting block (45). A connecting rod (42) is provided through the inner cavity of the moving block (46). A cathode magnet (43) is fixedly arranged on the side of the connecting rod (42) near the anode magnet (44). A pull plate (40) is fixedly arranged on the other side of the connecting rod (42). A limiting spring (49) is movably sleeved on the outer surface of the connecting rod (42).

2. The electric wrench according to claim 1, characterized in that: The transmission component includes a motor housing (16), the outer wall of which is snapped into the inner wall of the handle (2). A motor (22) is fixedly installed inside the motor housing (16). A sun gear (20) is fixedly sleeved on the outer surface of the output shaft of the motor (22). Three sets of planetary gears (21) are meshed at the gear position on the outer surface of the sun gear (20). A gearbox (15) is meshed on the outer surface of the planetary gears (21). A shaft bracket (14) is fixedly installed on the side of the planetary gears (21) away from the motor (22). A buffer sleeve (13) and a reducer (12) are movably sleeved on the side of the outer surface of the shaft bracket (14) away from the gearbox (15). The buffer sleeve (13) and the reducer (12) are opposite to each other. A buffer spring (19) is fixedly installed in the inner cavity of the side. The buffer spring (19) is movably sleeved on the outer surface of the shaft frame (14). A fixing block (11) is fixedly sleeved on the side of the shaft frame (14) away from the gearbox (15). A sleeve (10) is fixedly sleeved on the side of the fixing block (11) away from the shaft frame (14). A drive bevel gear (6) is fixedly sleeved on the side of the sleeve (10) away from the fixing block (11). A support sleeve (9) is movably installed on the side of the drive bevel gear (6) close to the fixing block (11). The support sleeve (9) is movably sleeved on the outer surface of the sleeve (10). A driven bevel gear (7) is meshed at the bottom of the outer surface of the drive bevel gear (6). An installation head (8) is meshed in the inner cavity of the driven bevel gear (7).

3. The electric wrench according to claim 1, characterized in that: The disassembly groove is symmetrically provided with locking blocks (37) on both sides, and the top of the pull plate (40) is symmetrically provided with two sets of bearing seats, and the inner cavity of the bearing seat is provided with a threaded rod (39) through thread.

4. The electric wrench according to claim 3, characterized in that: The threaded rod (39) is threaded on the outer surface of the bearing seat and is fitted with an anti-slip plate (38) that works with the locking block (37). The two sides of the threaded rod (39) pass through the bearing seat and are fixedly fitted with threaded knobs (41).

5. The electric wrench according to claim 1, characterized in that: The bottom of the ratchet (29) is movably connected to the bottom of the inner cavity of the adjustment box (25), the bottom of the pawl (28) is in sliding contact with the bottom of the inner cavity of the adjustment box (25), the outer surface of the adjustment knob (23) is provided with an anti-slip groove, and the inner cavity of the adjustment box (25) is provided with an opening for use with the pull rope (31).

6. An electric wrench according to claim 4, characterized in that: The anode magnet (44) is attracted to the cathode magnet (43), one side of the limiting spring (49) is fixedly connected to the inner side of the pull plate (40), and the other side of the limiting spring (49) is fixedly connected to the outer side of the moving block (46).

7. An electric wrench according to claim 2, characterized in that: The outer surfaces of the support sleeve (9), the reducer (12), the buffer sleeve (13), and the gearbox (15) are all engaged with the inner wall of the front housing (1).

8. An electric wrench according to claim 7, characterized in that: A switch (3) is provided through the bottom of the grip (2), and a storage battery is movably disposed inside the battery pack (4).

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