Torque wrench convenient to lock

Abstract

The utility model discloses a torque wrench convenient to lock, which comprises a ratchet head used for replacing various wrench heads. The holding part is used for holding and applying force; the ratchet head is connected to one end of the holding part; the ratchet wheel head is provided with a ratchet wheel assembly, the holding part comprises a rotary adjusting assembly and a movable part, the movable part is arranged between the ratchet wheel assembly and the rotary adjusting assembly, and the rotary adjusting assembly is used for adjusting a preset torsion value of the movable part; a locking device is further arranged at the bottom of the rotary adjusting assembly and used for locking a preset torsion value. The locking device is installed at the bottom of the wrench, the wrench can be attached to the handle more comfortably when held, the fatigue feeling of the hand is reduced, the locking device is pulled downwards to be separated from the rotary adjusting assembly, torsion is adjusted by rotating the handle, and after torsion adjustment is completed, the locking device is pushed upwards to limit the rotary adjusting assembly, so that the wrench can be locked more comfortably. Therefore, the accurate setting of the torsion is ensured, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wrench equipment, and particularly relates to a torsion wrench convenient to lock. BACKGROUND

[0002] The torque wrench is designed according to the bending principle of a beam, the bending principle of a torsion bar and the compression principle of a spiral spring, and can measure the torque acting on a nut. The torque wrench is also called a moment wrench, a torsion wrench or an adjustable torque wrench, and is a kind of wrench, which is generally divided into three types: a manual moment wrench, a pneumatic torsion wrench and an electric moment wrench.

[0003] In the prior art, the locking device is in the middle of the adjustable torque wrench. The utility model patent with the name of slip preset type torque wrench (application number: 2022233767851) was disclosed on April 21, 2023 in China, which is unlocked by pulling down the locking device in the middle of the wrench, and the torque is adjusted by rotating the handle after unlocking. Since the locking device is in the middle of the wrench, it greatly affects the feeling of holding and using, and the locking device needs to be continuously pulled down to unlock and adjust the torque, which is more troublesome to use. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the above technical problems in the prior art, and provides a torque wrench convenient to lock. The locking device is moved to the bottom of the rotation adjusting assembly, that is, the locking device is installed at the bottom of the wrench. When the operator holds the wrench, the handle can be more comfortably fitted, and the hand fatigue is reduced. Only the locking device needs to be pulled down, so that the locking device is separated from the rotation adjusting assembly. The torque can be adjusted by rotating the handle. After the torque adjustment is completed, the locking device is pushed up again, the rotation adjusting assembly is limited, the handle cannot be rotated, the accurate setting of the torque is ensured, and the work efficiency is improved.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0006] The utility model provides a torsion wrench which is convenient to lock, a ratchet head for replacing various wrench heads, a holding part for holding and applying force, the ratchet head being connected to one end of the holding part, the ratchet head being provided with a ratchet assembly, the holding part including a rotation adjusting assembly and a movable piece, the movable piece being arranged between the ratchet assembly and the rotation adjusting assembly, the rotation adjusting assembly being used for adjusting a preset torsion value of the movable piece, and the bottom of the rotation adjusting assembly being further provided with a locking device used for locking the preset torsion value.

[0007] Further, the ratchet assembly is provided with a tooth sleeve, the outer wall of the tooth sleeve is provided with a plurality of circumferentially arranged teeth, grooves are formed between the teeth, the movable piece is a cylinder, and the cylinder is matched with the grooves; when the torsion wrench is used beyond the preset torsion value, the cylinder enters the adjacent grooves, so that the ratchet assembly idles.

[0008] Further, the ratchet assembly is further provided with a rotating shaft, the end of the rotating shaft is used for mounting various wrench heads, the tooth sleeve is provided with an inner cavity, the rotating shaft is provided with a rotating shaft pin, and the rotating shaft pin is elastic; when the rotating shaft is embedded in the inner cavity, the rotating shaft pin abuts against the inner wall of the tooth sleeve, so that the tooth sleeve and the rotating shaft are connected in interference.

[0009] Further, the inner wall of the tooth sleeve is provided with internal teeth, and the rotating shaft pin is provided with sharp corners; when the tooth sleeve and the rotating shaft are connected in interference, the sharp corners are embedded between the internal teeth and are connected in meshing with the internal teeth.

[0010] Further, the holding part includes an outer tube and a rotating handle, one end of the outer tube is arranged in the rotating handle, the rotation adjusting assembly includes an abutting piece, a spring, a threaded rod, an inner tube and a sliding block, one end of the threaded rod is arranged in the rotating handle and is matched with the locking device, the sliding block is threadedly connected to the other end of the threaded rod, the inner tube and the spring are arranged in the outer tube, one end of the inner tube abuts against the sliding block, the spring abuts against the other end of the inner tube and the abutting piece, and the abutting piece abuts against the movable piece.

[0011] Further, the rotation adjusting assembly further comprises a main scale tube and a sub-scale tube, the main scale tube is sleeved outside the outer tube, the sub-scale tube is sleeved outside the main scale tube, the main scale tube is provided with a pin hole, the outer tube is correspondingly provided with a waist-shaped hole one, the end of the sliding block is provided with a connecting hole, a cylindrical pin one is arranged between the pin hole, the waist-shaped hole one and the connecting hole, and the sub-scale tube is connected with the rotation handle through an internal hexagonal screw. The rotation handle controls the rotation of the threaded rod, so that the sliding block is adjusted along the axial direction of the threaded rod, the sliding block adjusts the torque through the push spring, the displacement generated by the compression spring synchronously drives the displacement of the main scale tube, and the torque value after adjustment can be read by cooperating the numerical values of the main scale tube and the sub-scale tube.

[0012] Further, the rotation handle is provided with a handle inner sleeve, one end of the outer tube is located in the handle inner sleeve, the outer wall of the handle inner sleeve is provided with a nut part, the rotation handle is correspondingly provided with a nut groove, the rotation of the rotation handle drives the rotation of the handle inner sleeve, one end of the outer tube is provided with an internal thread one, the one end of the outer tube is threadedly connected with a screw rod seat, the one end of the outer tube is limited in the handle inner sleeve through the screw rod seat, the end of the handle inner sleeve is provided with an internal thread two, the end of the handle inner sleeve is threadedly connected with a locking cap, and the handle inner sleeve is limited in the rotation handle through the locking cap. The nut part and the nut groove are arranged, so that the rotation handle can drive the rotation of the handle inner sleeve, the threaded rod is threadedly connected with the outer tube, and the handle inner sleeve is limited in the rotation handle through the locking cap.

[0013] Further, the locking device comprises a locking block and a handle rear cover, one end of the locking block is fixedly connected with the handle rear cover, the screw rod seat is located at one end of the threaded rod, the other end of the locking block is provided with a limiting part, one end of the threaded rod is inserted into the limiting part, the corresponding end of the screw rod seat is provided with a limiting groove, the end of the threaded rod is provided with a through hole one, the limiting part is correspondingly provided with a waist-shaped hole two, the handle inner sleeve is correspondingly provided with a through hole two, the centers of the through hole one and the through hole two are on the same axis, and the cylindrical pin two is arranged between the through hole one, the waist-shaped hole two and the through hole two; when the limiting part of the locking block is inserted into the limiting groove under the drive of the handle rear cover, the rotation adjusting assembly cannot be rotated, and when the limiting part is pulled out of the limiting groove, the rotation adjusting assembly can be normally rotated. When the torque needs to be adjusted, the handle rear cover is pulled to drive the locking block, so that the limiting part is pulled out of the limiting groove, and the rotation handle is rotated. Due to the arrangement of the cylindrical pin two, the handle inner sleeve, the locking block and the threaded rod are synchronously rotated, the threaded rod controls the push spring of the inner tube, the spring pushes the cylinder, the main scale tube synchronously drives the sliding block to ascend and descend, and the torque value can be read by cooperating the scale of the sub-scale tube, so that the adjustment of the torque value is realized. When the torque adjustment is completed, the handle rear cover is pushed upward, so that the limiting part is inserted into the limiting groove. Due to the polygonal shape of the limiting part, the locking block cannot be rotated, the rotation handle is locked by the cylindrical pin two, so that the rotation handle cannot be rotated, and the rotation handle is locked.

[0014] Further, the other end of the locking block is provided with a threaded connection part, the threaded connection part passes through the handle rear cover, the threaded connection part is connected with a locking nut, the locking nut is screwed on the handle rear cover, and the handle rear cover is threadedly connected with a locking cap cover. By arranging the threaded connection part at the other end of the locking block, the locking nut can be used for fixedly connecting the locking block and the handle rear cover; the locking cap cover is arranged to close the handle rear cover, so that foreign matters cannot enter the inside of the wrench, and the wrench is protected.

[0015] Further, the other end of the threaded rod is axially provided with two gasket grooves, the locking block is correspondingly provided with a mounting groove, and a flat pushing gasket is arranged between the mounting groove and the gasket groove. The two gasket grooves are used for limiting the stroke of the handle rear cover. When the handle rear cover is pulled down, the flat pushing gasket is arranged between the mounting groove and the lower gasket groove, and after the handle rear cover is pushed up, the flat pushing gasket is arranged between the mounting groove and the upper gasket groove. The flat pushing gasket and the gasket groove are used for limiting the two strokes of the handle rear cover.

[0016] The utility model has the following beneficial effects due to the adoption of the above technical scheme:

[0017] The locking device is arranged at the bottom of the wrench, so that the operator can more comfortably hold the handle when holding the wrench, and hand fatigue is reduced. The locking device is separated from the rotary adjusting assembly by pulling down the locking device, the torque can be adjusted by rotating the handle, the locking device is pushed up after the torque adjustment is completed, the rotary adjusting assembly is limited, the handle cannot be rotated, the accurate setting of the torque is ensured, and the working efficiency is improved.

[0018] The locking device of this utility model includes a locking block and a handle back cover. One end of the locking block is fixedly connected to the handle back cover. A screw seat is located at one end of the threaded rod. The other end of the locking block is provided with a limiting part. One end of the threaded rod is inserted into the limiting part. The corresponding end of the screw seat is provided with a limiting groove. The end of the threaded rod is provided with a through hole one. The limiting part is provided with a waist-shaped hole two. The inner sleeve of the handle is provided with a through hole two. The centers of the through holes one and two are on the same axis. A cylindrical pin two is inserted between the through holes one, the waist-shaped hole two and the through hole two. When the handle back cover drives the limiting part of the locking block to be inserted into the limiting groove, the rotation adjustment component cannot rotate. When the limiting part is pulled out from the limiting groove, the rotation adjustment component can rotate normally. When torque adjustment is needed, pull the handle cover to move the locking block, causing the limiting part to be pulled out of the limiting groove. Rotate the handle; due to the cylindrical pin, the inner sleeve, locking block, and threaded rod rotate synchronously. The threaded rod controls the inner tube to push the spring, the spring pushes the cylinder, and the main scale tube moves the slider up and down synchronously. With the help of the scale on the sub-scale tube, the torque value can be read, thus achieving torque adjustment. After the torque adjustment is completed, push the handle cover upward to insert the limiting part into the limiting groove. Because the limiting part is polygonal, the locking block cannot rotate. The cylindrical pin locks the handle, preventing it from rotating. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the structure of a torque wrench that is easy to lock according to the present invention;

[0021] Figure 2 This is an exploded view of the ratchet head in this utility model;

[0022] Figure 3 This is an exploded view of the gripping part in this utility model;

[0023] Figure 4 This is a schematic diagram of the toothed sleeve in this utility model;

[0024] Figure 5 This is a schematic diagram of the connection between the gripping part and the outer tube in this utility model;

[0025] Figure 6 for Figure 5 Cross-sectional view of AA in the middle;

[0026] Figure 7 for Figure 5 Cross-sectional view of BB in the middle;

[0027] Figure 8 for Figure 5 A bottom view;

[0028] Figure 9 For Figure 8 the profile of the C-C;

[0029] Figure 10 The structure diagram of the screw rod seat in the utility model;

[0030] Figure 11 The structure diagram of the locking block in the utility model;

[0031] Figure 12 The structure diagram of the utility model after the locking device is pulled out;

[0032] Figure 13 The structure diagram of the utility model when the holding part is rotated to adjust the torsion;

[0033] Figure 14 The structure diagram of the utility model after the torsion adjustment is completed and the locking device is inserted.

[0034] In the figure, 1-ratchet head; 2-holding part; 3-ratchet assembly; 4-rotary adjustment assembly; 5-cylinder; 6-locking device; 7-gear; 8-groove; 9-rotating shaft; 10-tooth sleeve; 11-inner cavity; 12-rotating shaft pin; 13-inner tooth; 14-sharp angle; 15-outer tube; 16-rotary handle; 17-abutment; 18-spring; 19-threaded rod; 20-inner tube; 21-sliding block; 22-main scale tube; 23-sub scale tube; 24-elastic member; 25-pin hole; 26-waist-shaped hole one; 27-connection hole; 28-cylinder pin one; 29-internal hexagonal screw; 30-handle inner sleeve; 31-nut part; 32-nut groove; 33-inner thread one; 34-screw rod seat; 35-inner thread two; 36-locking cap; 37-locking block; 38-handle rear cover; 39-limiting part; 40-limiting groove; 41-through hole one; 42-waist-shaped hole two; 43-through hole two; 44-cylinder pin two; 45-threaded connection part; 46-locking nut; 47-locking cap cover; 48-gasket groove; 49-mounting groove; 50-flat push gasket. DETAILED DESCRIPTION

[0035] As Figures 1 to 14 shown, it is a torsion wrench convenient to lock, the ratchet head 1 is used for replacing various wrench heads; the holding part 2 is used for holding and applying force; the ratchet head 1 is connected at one end of the holding part 2; the ratchet head 1 is provided with the ratchet assembly 3, the holding part 2 includes the rotary adjustment assembly 4 and the movable piece, the movable piece is arranged between the ratchet assembly 3 and the rotary adjustment assembly 4, and the rotary adjustment assembly 4 is used for adjusting the preset torsion value of the movable piece; the bottom of the rotary adjustment assembly 4 is further provided with the locking device 6, and the locking device 6 is used for locking the preset torsion value.

[0036] The ratchet assembly 3 is provided with a tooth sleeve 10, the outer wall of the tooth sleeve 10 is provided with a plurality of circumferentially arranged teeth 7, the teeth 7 form a groove 8 therebetween, the movable member is a cylinder 5, the cylinder 5 is matched with the groove 8; when the torque wrench is used to exceed the preset torque value, the cylinder 5 enters the adjacent groove 8, so that the ratchet assembly 3 idles. The ratchet assembly 3 is also provided with a rotating shaft 9, the end of the rotating shaft 9 is used to install various wrench heads, the tooth sleeve 10 is provided with an inner cavity 11, the rotating shaft 9 is provided with a elastic rotating shaft pin 12, when the rotating shaft 9 is embedded in the inner cavity 11, the rotating shaft pin 12 abuts against the inner wall of the tooth sleeve 10, so that the tooth sleeve 10 and the rotating shaft 9 are interference connected. The inner cavity 11 is used to clamp the rotating shaft 9, the rotating shaft pin 12 is provided with an elastic member 24, such as a spring, the rotating shaft 9 is provided with a through hole, the spring is embedded in the through hole, and the spring applies an elastic force to the rotating shaft pin 12, when the rotating shaft 9 is embedded in the inner cavity 11, the rotating shaft pin 12 abuts against the inner wall of the tooth sleeve 10, the interference connection facilitates the disassembly of the rotating shaft 9 and the tooth sleeve 10, and facilitates the replacement of the maintenance parts in the later period. The inner wall of the tooth sleeve 10 is provided with internal teeth 13, the rotating shaft pin 12 is provided with a sharp corner 14, when the tooth sleeve 10 and the rotating shaft 9 are interference connected, the sharp corner 14 is embedded between the internal teeth 13 and is meshed and connected with the internal teeth 13.

[0037] The holding part 2 comprises an outer tube 15 and a rotating handle 16, one end of the outer tube 15 is arranged in the rotating handle 16, the rotating adjustment assembly 4 comprises an abutting piece 17, a spring 18, a threaded rod 19, an inner tube 20 and a sliding block 21, one end of the threaded rod 19 is arranged in the rotating handle 16 and is matched with the locking device 6, the sliding block 21 is threadedly connected with the other end of the threaded rod 19, the inner tube 20 and the spring 18 are arranged in the outer tube 15, one end of the inner tube 20 abuts against the sliding block 21, the spring 18 abuts against the other end of the inner tube 20 and the abutting piece 17, and the abutting piece 17 abuts against the movable piece. After the rotating handle 16 is rotated, the threaded rod 19 is driven to rotate, so that the sliding block 21 is displaced along the axial direction of the threaded rod 19, thereby extruding the spring 18, the spring 18 transmits force to the abutting piece 17, and the abutting piece 17 abuts against the movable piece. The rotating adjustment assembly 4 further comprises a main scale tube 22 and a sub-scale tube 23, the main scale tube 22 is sleeved outside the outer tube 15, the sub-scale tube 23 is sleeved outside the main scale tube 22, the main scale tube 22 is provided with a pin hole 25, the outer tube 15 is correspondingly provided with a waist-shaped hole one 26, the end of the sliding block 21 is provided with a connecting hole 27, a cylindrical pin one 28 is arranged between the pin hole 25, the waist-shaped hole one 26 and the connecting hole 27, and the sub-scale tube 23 is connected with the rotating handle 16 through an inner hexagonal screw 29. After the rotating handle controls the threaded rod 19 to rotate, the sliding block 21 is adjusted along the axial direction of the threaded rod 19, the sliding block 21 adjusts the torque by pushing the spring 18, the displacement generated by extruding the spring 18 synchronously drives the main scale tube 22 to displace, and the numerical value of the main scale tube 22 and the sub-scale tube 23 can be read after adjustment. The rotating handle 16 is provided with a handle inner sleeve 30, one end of the outer tube 15 is located in the handle inner sleeve 30, the outer wall of the handle inner sleeve 30 is provided with a nut part 31, the rotating handle 16 is correspondingly provided with a nut groove 32, the rotating handle drives the handle inner sleeve 30 to rotate, one end of the outer tube 15 is provided with an internal thread one 33, the outer tube 15 is threadedly connected with a screw rod seat 34, one end of the outer tube 15 is limited in the handle inner sleeve 30 through the screw rod seat 34, the end of the handle inner sleeve 30 is provided with an internal thread two 35, the end of the handle inner sleeve 30 is threadedly connected with a locking cap 36, and the handle inner sleeve 30 is limited in the rotating handle 16 through the locking cap 36. The arrangement of the nut part 31 and the nut groove 32 enables the rotating handle 16 to drive the handle inner sleeve 30 to rotate, the threaded rod 19 is threadedly connected with one section of the outer tube 15, and the handle inner sleeve 30 is limited in the rotating handle 16 through the locking cap 36.

[0038] The locking device 6 comprises a locking block 37 and a handle rear cover 38, one end of the locking block 37 is fixedly connected with the handle rear cover 38, a screw rod seat 34 is located at one end of the threaded rod 19, the other end of the locking block 37 is provided with a limiting portion 39, one end of the threaded rod 19 is inserted into the limiting portion 39, the corresponding end of the screw rod seat 34 is provided with a limiting groove 40, the end of the threaded rod 19 is provided with a through hole one 41, the limiting portion 39 is correspondingly provided with a waist-shaped hole two 42, the handle inner sleeve 30 is correspondingly provided with a through hole two 43, the centers of the through hole one 41 and the through hole two 43 are on the same axis, the cylindrical pin two 44 is inserted between the through hole one 41, the waist-shaped hole two 42 and the through hole two 43; when the handle rear cover 38 drives the limiting portion 39 of the locking block 37 to be inserted into the limiting groove 40, the rotation adjusting assembly 4 cannot rotate, when the limiting portion 39 is pulled out of the limiting groove 40, the rotation adjusting assembly 4 can rotate normally. When it is necessary to adjust the torque, the handle rear cover 38 is pulled to drive the locking block 37, so that the limiting portion 39 is pulled out of the limiting groove 40, the rotating handle is rotated, due to the arrangement of the cylindrical pin two 44, the handle inner sleeve 30, the locking block 37 and the threaded rod 19 rotate synchronously, the threaded rod 19 controls the inner tube 20 to push the spring 18, the spring 18 pushes the cylinder 5, the main scale tube 22 and the synchronous slider 21 are lifted, the scale of the sub-scale tube 23 can be read to read the torque value, so that the adjustment of the torque value is realized; when the torque adjustment is completed, the handle rear cover 38 is pushed upward, so that the limiting portion 39 is inserted into the limiting groove 40, due to the polygonal shape of the limiting portion 39, the locking block 37 cannot rotate, the rotating handle is locked by the arrangement of the cylindrical pin two 44, so that the rotating handle cannot rotate, thereby the rotating handle is locked.

[0039] The other end of the locking block 37 is provided with a threaded connecting portion 45, the threaded connecting portion 45 passes through the handle rear cover 38, the threaded connecting portion 45 is connected with a locking nut 46, the locking nut 46 is screwed on the handle rear cover 38, the handle rear cover 38 is threadedly connected with a locking cap 47. By arranging the threaded connecting portion 45 at the other end of the locking block 37, the locking nut 46 can fixedly connect the locking block 37 with the handle rear cover 38; the arrangement of the locking cap 47 closes the handle rear cover 38, so that foreign matters cannot enter the inside of the wrench, which has a protection effect on the wrench. The other end of the threaded rod 19 is axially provided with two gasket grooves 48, the locking block 37 is correspondingly provided with a mounting groove 49, the flat push gasket 50 is arranged between the mounting groove 49 and the gasket groove 48, the two gasket grooves 48 limit the stroke of the handle rear cover 38. When the handle rear cover 38 is pulled downward, the flat push gasket 50 is located between the mounting groove 49 and the lower gasket groove 48, after the handle rear cover 38 is pushed upward, the flat push gasket 50 is located between the mounting groove 49 and the upper gasket groove 48, the arrangement of the flat push gasket 50 and the gasket groove 48 limits the two strokes of the handle rear cover 38.

[0040] The utility model discloses a lock device 6 is moved to the bottom of rotating adjustment subassembly 4, namely installs lock device 6 at the bottom of spanner, and the operator can be more comfortable to fit handle when holding spanner, reduces the hand fatigue feeling, just needs to pull down lock device 6, makes lock device 6 with rotating adjustment subassembly 4 separate, can adjust the torsion through rotating handle 16, after torsion adjustment is completed, again pushes lock device 6, and the limiting rotating adjustment subassembly 4 makes handle unable to rotate, ensures the accurate setting of torsion, improves work efficiency.

[0041] The above is only the specific embodiment of the utility model, but the technical features of the utility model are not limited to this. Any simple change, equivalent replacement or modification, etc. made on the basis of the utility model to solve basically the same technical problem and realize basically the same technical effect is covered in the protection scope of the utility model.

Claims

1. A torque wrench for facilitating locking, comprising: a ratchet head for replacing various wrench heads; a holding part for holding and applying force; the ratchet head is connected to one end of the holding part; characterized in that: the ratchet head is provided with a ratchet assembly, the holding part includes a rotation adjusting assembly and a movable element, the movable element is arranged between the ratchet assembly and the rotation adjusting assembly, and the rotation adjusting assembly is used to adjust the preset torque value of the movable element; the bottom of the rotation adjusting assembly is further provided with a locking device, and the locking device is used to lock the preset torque value.

2. A torque wrench for facilitating locking according to claim 1, characterized in that: the ratchet assembly is provided with a gear sleeve, the outer wall of the gear sleeve is provided with a plurality of circumferentially arranged teeth, the teeth form a groove therebetween, the movable element adopts a cylinder, and the cylinder is matched with the groove; when the torque wrench is used beyond the preset torque value, the cylinder enters the adjacent groove, so that the ratchet assembly idles.

3. A torque wrench for facilitating locking according to claim 2, characterized in that: the ratchet assembly is further provided with a rotating shaft, the end of the rotating shaft is used to install various wrench heads, the gear sleeve is provided with an inner cavity, the rotating shaft is provided with a elastic rotating shaft pin, when the rotating shaft is embedded in the inner cavity, the rotating shaft pin abuts against the inner wall of the gear sleeve, so that the gear sleeve and the rotating shaft are connected in interference.

4. A torque wrench for facilitating locking according to claim 3, characterized in that: the inner wall of the gear sleeve is provided with internal teeth, the rotating shaft pin is provided with a sharp corner, when the gear sleeve and the rotating shaft are connected in interference, the sharp corner is embedded between the internal teeth and is connected with the internal teeth in meshing.

5. A torque wrench for facilitating locking according to claim 3, wherein: the holding part includes an outer tube and a rotating handle, one end of the outer tube is arranged in the rotating handle, the rotation adjusting assembly includes an abutting element, a spring, a threaded rod, an inner tube and a sliding block, one end of the threaded rod is arranged in the rotating handle and is matched with the locking device, the sliding block is threadedly connected with the other end of the threaded rod, the inner tube and the spring are arranged in the outer tube, one end of the inner tube abuts against the sliding block, the spring abuts against the other end of the inner tube and the abutting element, and the abutting element abuts against the movable element.

6. A torque wrench for facilitating locking according to claim 5, characterized in that: the rotation adjusting assembly further includes a main scale tube and a sub-scale tube, the main scale tube is sleeved outside the outer tube, the sub-scale tube is sleeved outside the main scale tube, the main scale tube is provided with a pin hole, the outer tube is correspondingly provided with a waist-shaped hole one, the end of the sliding block is provided with a connecting hole, a cylindrical pin one is arranged between the pin hole, the waist-shaped hole one and the connecting hole, and the sub-scale tube is connected with the rotating handle through an internal hexagonal screw.

7. A torque wrench for facilitating locking according to claim 5, wherein: a handle inner sleeve is arranged in the rotating handle, one end of the outer tube is located in the handle inner sleeve, the outer wall of the handle inner sleeve is provided with a nut part, the rotating handle is correspondingly provided with a nut groove, the rotating handle drives the handle inner sleeve to rotate, one end of the outer tube is provided with an internal thread one, one end of the outer tube is threadedly connected with a screw rod seat, one end of the outer tube is limited in the handle inner sleeve through the screw rod seat, the end of the handle inner sleeve is provided with an internal thread two, the end of the handle inner sleeve is threadedly connected with a locking cap, and the handle inner sleeve is limited in the rotating handle through the locking cap.

8. A torque wrench for facilitating locking according to claim 7, characterized in that: The locking device comprises a locking block and a handle rear cover, one end of the locking block is fixedly connected with the handle rear cover, the screw rod seat is located at one end of the threaded rod, the other end of the locking block is provided with a limiting portion, one end of the threaded rod is inserted into the limiting portion, the corresponding end of the screw rod seat is provided with a limiting groove, the end of the threaded rod is provided with a through hole one, the limiting portion is provided with a waist-shaped hole two, the handle inner sleeve is provided with a through hole two, the centers of the through hole one and the through hole two are on the same axis, the through hole one, the waist-shaped hole two and the through hole two are penetrated by a cylindrical pin two; when the handle rear cover drives the limiting portion of the locking block to be inserted into the limiting groove, the rotary adjusting assembly cannot rotate, when the limiting portion is pulled out of the limiting groove, the rotary adjusting assembly can normally rotate.

9. A torque wrench for facilitating locking according to claim 8, characterized in that: The other end of the locking block is provided with a threaded connecting portion, the threaded connecting portion passes through the handle rear cover, the threaded connecting portion is connected with a locking nut, the locking nut is screwed on the handle rear cover, the handle rear cover is threadedly connected with a locking cap.

10. The torque wrench of claim 8, wherein: The other end of the threaded rod is axially distributed with two gasket grooves, the locking block is correspondingly provided with a mounting groove, the mounting groove and the gasket groove are provided with a flat pushing gasket, the travel of the handle rear cover is limited by the two gasket grooves.

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