Wrench chuck device

Abstract

The invention discloses a wrench chuck device, and relates to the technical field of disassembly and assembly tools, the wrench chuck device comprises a wrench body and a driving device, the wrench body is provided with a male wrench and a female wrench which can be symmetrically connected, and the inner sides of the male wrench and the female wrench are provided with wrench surfaces; the wrench surfaces of the male wrench and the female wrench can be clamped on the outer side of a position to be tightened or loosened; the driving device is arranged on the outer side of the wrench body and can drive the male wrench body and the female wrench body in the connected state to rotate synchronously. The wrench chuck device provided by the invention can be suitable for sealing a pipeline, or the occasion that a manual wrench cannot be operated due to a narrow space, or the occasion that parts are large in size in pipeline connection, or the situation that the open end of the pipeline is far away from an operation point.

Description

Technical Field

[0001] The invention relates to the technical field of disassembly and assembly tools, in particular to a wrench chuck device. Background Art

[0002] In the installation and disassembly of pipeline parts, manual wrenches are inefficient, labor-intensive, require high operating space, and are difficult to effectively guarantee accuracy and consistency. In order to overcome the shortcomings of manual wrenches, electric wrenches and hydraulic wrenches came into being; however, electric wrenches have great limitations when handling pipeline joints. For closed pipelines, or when the open end of the pipeline is far from the operating point, it is difficult for electric wrenches to be put on pipeline parts for tightening or loosening operations due to their closed design. Therefore, it is urgent to design a solution that can work in closed pipelines or when the open end of the pipeline is far from the operating point. Summary of the invention

[0003] The purpose of the present invention is to provide a wrench chuck device to solve the problems existing in the above-mentioned prior art, and can be applicable to closed pipelines, or occasions where a manual wrench cannot be operated due to narrow space, or scenes where the parts in the pipeline connection are large in size, or when the open end of the pipeline is far from the operating point.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a wrench chuck device, comprising:

[0006] The wrench body comprises a male wrench and a female wrench which can be symmetrically connected, wherein the inner sides of the male wrench and the female wrench are both provided with a wrench face; the wrench faces of the male wrench and the female wrench can be clamped on the outer side of the position to be tightened or loosened;

[0007] The driving device is arranged outside the wrench body and can drive the male wrench and the female wrench in the connected state to rotate synchronously.

[0008] Preferably, the male wrench and the female wrench are both semicircular, and the outer circumference is a toothed structure. After the end face of the male wrench and the end face of the female wrench are fixedly connected, the wrench surfaces of the two can form a complete plum blossom hole; the driving device can be meshed and transmission connected with the outer tooth surface of the male wrench or the female wrench.

[0009] Preferably, a locking mechanism is fixedly provided on the end face of the male wrench, and the locking mechanism is a latch or an elastic steel ball, etc. A hole is provided on the end face of the female wrench, and when the male wrench is docked with the female wrench, the locking mechanism can be inserted into the corresponding hole.

[0010] Preferably, a positioning pin is fixedly provided on the end face of the male wrench, a positioning hole is provided on the end face of the female wrench, a locking hole is provided on the side wall of the positioning pin, and a steel ball is connected to the inner wall of the positioning hole through a spring; when the male wrench is docked with the female wrench, the positioning pin can be inserted into the corresponding positioning hole, and the end of the steel ball away from the spring is clamped in the locking hole on the corresponding side.

[0011] Preferably, it also includes a wrench housing, which includes a wrench guide rail male and a wrench guide rail nut hinged at one end, and the wrench guide rail male and the wrench guide rail nut can be connected at one end away from the hinge point by a fastening device, and the wrench guide rail male and the wrench guide rail nut are provided with guide surfaces on the inner sides, and the two ends of the tooth surface of the wrench male can be slidably connected to the guide surface of the wrench guide rail male, and the two ends of the tooth surface of the wrench nut can be slidably connected to the guide surface of the wrench guide rail female. The cooperation between the wrench male and the wrench guide rail male is not limited here. In addition to this cooperation method, the tooth surface of the wrench male can also be slidably connected to the guide surface of the wrench guide rail nut, and the tooth surface of the wrench nut can be slidably connected to the guide surface of the wrench guide rail male; a power compartment is fixedly provided on the outer side of the wrench guide rail male, and a notch is provided at the power compartment to penetrate the guide surface, and the driving device is provided in the power compartment, and the driving device can be meshed and transmitted with the tooth surface of the wrench male through the notch.

[0012] Preferably, the driving device includes a driving gear, which is arranged in the power compartment and is transmission-connected to a driving motor; the tooth surface of the driving gear can be meshed and transmission-connected with the tooth surface of the male wrench through the notch.

[0013] Preferably, the driving device comprises a worm, the worm is located in the power compartment, one end of the worm is transmission-connected to a driving motor, and the tooth surface of the worm can be meshed and transmission-connected with the tooth surface of the male wrench through the notch.

[0014] Preferably, an ear groove is provided at the male end of the wrench guide rail, and an ear plate is provided at the female end of the wrench guide rail. The ear plate is movably arranged in the ear groove, and the ear plate and the ear groove are movably connected by a rotating shaft.

[0015] Preferably, the fastening device includes an L-shaped buckle, one end of the buckle is movably connected to the end of the wrench guide male away from the ear groove through a buckle shaft, and the end of the wrench guide nut away from the ear plate is provided with an extension protrusion, and after the wrench guide male and the wrench guide nut are connected, the end of the buckle away from the buckle shaft can be buckled on the extension protrusion.

[0016] Preferably, a plurality of the wrench bodies are provided, the outer diameter of each of the wrench bodies is the same, and the inner diameter of the plum blossom hole formed on the wrench surface of each of the wrench bodies is different.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The wrench body of the wrench chuck device of the present invention adopts a detachably connected male wrench and female wrench, so that when it is necessary to close a non-open pipeline or there are valve bodies, elbows, filters and other equipment on both sides of the pipeline parts, which prevent the wrench from directly contacting the pipeline parts, the user can manually separate the two, move the male wrench and the female wrench to the periphery of the pipeline parts respectively, and then install them together, which solves the problem that when the pipeline parts are in a position where the space is limited and it is difficult to directly insert (for example, in a corner of the wall, etc.) or the open end of the pipeline is far from the operation point, it can be installed in a position that is easy to assemble and then moved to the pipeline parts, and even in a very compact space, the tightening or loosening operation can be effectively performed. On the other hand, even if the pipeline parts are in a position where the space is not limited, it may encounter the problem that the wrench cannot contact the pipeline parts after encountering obstacles when approaching the pipeline parts from both sides of the pipeline. Through the detachable wrench body, it is possible to install it on the pipeline parts from the side that is easier to insert, which not only improves the scope of application of the tool, but also provides great convenience for repair and maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic structural diagram of a wrench chuck device in one embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the partial structure of a wrench chuck device in one embodiment of the present invention;

[0022] Figure 3 A diagram of the buckle structure of a wrench chuck device in one embodiment of the present invention;

[0023] Figure 4 A schematic diagram of a wrench in one embodiment of the present invention;

[0024] Figure 5 A schematic diagram of a wrench nut in one embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection state of a male wrench and a female wrench in one embodiment of the present invention;

[0026] Figure 7A schematic diagram of a wrench housing in one embodiment of the present invention;

[0027] Figure 8 A schematic diagram of the structure of multiple wrench bodies with wrench faces of different sizes in one embodiment of the present invention;

[0028] Fig. 9 This is a schematic diagram of the wrench chuck device in the first embodiment in use;

[0029] Fig.10 For Example 1 Fig. 9 A partial enlarged schematic diagram;

[0030] Fig.11 It is a schematic diagram of the driving device in the second embodiment;

[0031] Fig.12 Schematic diagram of a spring and a steel ball in one embodiment of the present invention.

[0032] In the figure: 1-pipe joint, 2-valve body, 3-spring, 4-extension structure, 5-torsion spring, 6-filter, 7-wrench housing, 701-wrench guide male, 702-wrench guide female, 703-guide surface, 704-power compartment, 705-notch, 8-ear plate, 9-ear groove, 10-rotating shaft, 11-buckle, 12-extension convex, 13-wrench body, 1301-wrench male, 1302-wrench female, 1303-wrench surface, 1304-tooth surface, 1305-end face, 14-locating hole, 15-lock hole, 16-locating pin, 17-steel ball, 18-worm, 19-drive gear, 20-plum blossom hole, 21-handle, 22-bend pipe. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0034] The purpose of the present invention is to provide a wrench chuck device to solve the problems existing in the above-mentioned prior art, and can be applicable to closed pipelines, or occasions where a manual wrench cannot be operated due to narrow space, or scenes where the parts in the pipeline connection are large in size, or when the open end of the pipeline is far from the operating point.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] refer to Figures 1 to 12 As shown, the present invention provides a wrench chuck device, including a wrench body 13 and a driving device, the wrench body 13 has a male wrench 1301 and a female wrench 1302 that can be symmetrically connected, the inner sides of the male wrench 1301 and the female wrench 1302 are both provided with a wrench surface 1303, the male wrench 1301 and the female wrench 1302 are both semicircular, and the outer peripheral surface is a toothed tooth structure, after the end face 1305 of the male wrench 1301 and the end face 1305 of the female wrench 1302 are fixedly connected, the wrench surfaces 1303 of the two can form a plum blossom hole 20, and the plum blossom hole 20 can be formed into a plum blossom wrench structure, which is convenient for clamping and fixing with the outer wall of the pipeline part; through the plum blossom hole 20 structure, the wrench surfaces 1303 of the male wrench 1301 and the female wrench 1302 can be clamped on the outside of the position to be tightened or loosened. In this embodiment, the spanner body 13 is provided with a plurality of spanner bodies 13, and the outer diameter size of each spanner body 13 is the same, and the inner diameter size of the plum blossom hole 20 formed by the spanner face 1303 of each spanner body 13 is different, so that it can be applied to pipeline parts of different sizes; the driving device is arranged on the outside of the spanner body 13, and the driving device can be connected with the outer meshing transmission of the spanner male 1301 or the spanner female 1302, and it can drive the spanner male 1301 and the spanner female 1302 in the connection state to rotate synchronously. When it is necessary to tighten or loosen the pipeline part, first select a suitable spanner body 13 according to the size of the target pipeline part. The spanner male 1301 and the spanner female 1302 can be manually separated, and it is surrounded on the pipeline part and does not fall off, ensuring that the spanner face 1303 is closely attached to the surface of the pipeline part. Then the spanner male 1301 and the spanner female 1302 are docked and fixed. Start the driving device, the driving device rotates, and the spanner body 13 is driven to rotate via the meshing transmission mechanism, thereby completing the operation task of the pipeline part.

[0037] In order to ensure that the detachably connected male wrench 1301 and female wrench 1302 of the present invention can be well fixed after docking, so that the separation problem will not occur when the pipeline parts are screwed, in one embodiment, a pin is fixedly provided on the end face 1305 of the male wrench 1301, and a hole is opened on the end face 1305 of the female wrench 1302. When the male wrench 1301 and the female wrench 1302 are docked, the pin can be inserted into the corresponding hole. A plug-in connection method is adopted between the male wrench 1301 and the female wrench 1302. When the end faces 1305 of the male wrench 1301 and the female wrench 1302 are aligned, the pin is inserted into the hole to complete the locking. This method is not only simple and easy, but also can provide higher mechanical strength.

[0038] The connection method between the male wrench 1301 and the female wrench 1302 is not limited. In another preferred embodiment, a positioning pin 16 is fixedly provided on the end face 1305 of the male wrench 1301, a positioning hole 14 is provided on the end face 1305 of the female wrench 1302, a locking hole 15 is provided on the side wall of the positioning pin 16, and a steel ball 17 is connected to the inner wall of the positioning hole 14 through a spring 3; when the male wrench 1301 and the female wrench 1302 are docked, the positioning pin 16 can squeeze the steel ball 17 and the spring 3, and be inserted into the corresponding positioning hole 14. At this time, the locking hole 15 of the positioning pin 16 is coaxial with the steel ball 17 on the corresponding side. Under the elastic force of the spring 3, the steel ball 17 is clamped in the locking hole 15 on the same side away from the spring 3 to achieve locking; the pressure of the internal spring 3 is used to push the steel ball 17 to protrude toward the position of the locking hole 15, and the steel ball 17 will be embedded in the locking hole 15, thereby achieving a quick and stable connection. In addition, the disassembly process is also very simple. You only need to pull the male wrench 1301 outward with force and apply sufficient external force to make the locating pin 16 disengage from the locating hole 14. Since the steel ball 17 is a smooth arc surface structure, the steel ball 17 and the spring 3 are squeezed during the locating pin 16 disengaging from the locating hole 14, and the steel ball disengages from the lock hole 15. The two parts can be separated by overcoming the pressure of the spring 3.

[0039] In order to make the wrench body 13 of the present invention more stable when in use and to prevent its axial movement, in one embodiment, a wrench housing 7 is involved, and the wrench housing 7 includes a wrench guide male 701 and a wrench guide female 702 hinged at one end, and the ends of the wrench guide male 701 and the wrench guide female 702 away from the hinge point can be connected by a fastening device, and the fastening device is used to lock the closed wrench housing 7 to form a tightening continuous wrench rotation guide surface to prevent accidental opening during operation. Or the wrench body 13 is detached; the inner sides of the wrench guide rail male 701 and the wrench guide rail female 702 are provided with a guide surface 703, and the tooth surface 1304 of the wrench male 1301 can be slidably connected to the guide surface 703 of the wrench guide rail male 701, and the tooth surface 1304 of the wrench female 1302 can be slidably connected to the guide surface 703 of the wrench guide rail female 702. After the wrench guide rail male 701 and the wrench guide rail female 702 are docked and closed, an annular guide surface 703 is provided to the wrench body 1 3, and at the same time play an axial limiting role, the guide surface 703 is slidably connected with the two ends of the outer tooth surface 1304 of the wrench body 13, and the middle of the guide surface 703 is an annular groove for accommodating the outer tooth surface 1304 of the wrench body 13. The outer tooth surface 1304 of the wrench body 13 is located in the annular groove in the middle of the guide surface 703 and will not be interfered with. The extension structure 4 at both ends of the outer tooth surface is slidably contacted and connected with the guide surface 703, so that the wrench body 13 can rotate along the guide surface 703 without limiting the tooth surface; the outer diameter size of the wrench body 13 is the same, so that it is suitable for the wrench housing 7, which is convenient for replacing the wrench body 13 with different plum blossom hole sizes according to the size of the pipeline parts; the wrench body 13 with different sizes of the wrench surface 1303 maintains the same outer tooth surface 1304 diameter size, so that when it is necessary to replace wrenches of different sizes to adapt to pipeline parts of various specifications, normal engagement can be achieved without making any adjustment to the driving device in the power compartment 704. This plug-and-play design greatly simplifies the usage process and reduces the time wasted due to frequent adjustments; a power compartment 704 is fixedly provided on the outside of the wrench guide rail 701, and a notch 705 that passes through the guide rail surface 703 is provided at the power compartment 704, so that a driving device is provided in the power compartment 704, and the driving device can be meshed and transmitted with the tooth surface 1304 of the wrench male 1301 through the notch 705.

[0040] In order to facilitate disassembly and assembly, an ear groove 9 is provided at one end of the wrench guide male 701 in this embodiment, and an ear plate 8 is provided at one end of the wrench guide female 702. The ear plate 8 is movably arranged in the ear groove 9, and the ear plate 8 and the ear groove 9 are movably connected by a rotating shaft 10 to form a rotating connection structure. The fastening device of this embodiment includes an L-shaped buckle 11, and a torsion spring 5 is provided at the buckle 11. The torsion spring 5 is not a necessary structure. In other embodiments, the torsion spring 5 can also be removed, which does not affect the use of the present invention; one end of the buckle 11 is movably connected to the end of the wrench guide male 701 away from the ear groove 9 through the buckle 11 rotating shaft, and the end of the wrench guide female 702 away from the ear plate 8 is provided with an extension protrusion 12. After the wrench guide male 701 and the wrench guide female 702 are connected, the end of the buckle 11 away from the buckle 11 rotating shaft 10 can be buckled on The extension protrusion 12 is connected with the torsion spring 5 to provide a snapping force to prevent it from loosening automatically. When in use, the wrench guide male 701 and the wrench guide nut 702 are connected, and then the end of the buckle 11 away from the buckle 11 rotating shaft 10 is snapped on the extension protrusion 12 to achieve the locking of the wrench guide male 701 and the wrench guide nut 702. When disassembling, the buckle 11 is manually pushed to disengage from the extension protrusion 12 to achieve the unlocking of the wrench guide male 701 and the wrench guide nut 702, thereby facilitating the replacement of different wrench bodies 13.

[0041] The driving device in this embodiment adopts a driving motor and a driving gear 19. The driving gear 19 is arranged in the power compartment 704, and the driving gear 19 is fixedly connected to the gear shaft through a keyway, and one end of the gear shaft is connected to the driving motor in a transmission manner; the width of the tooth surface 1304 of the driving gear 19 is smaller than the width of the outer tooth surface of the wrench body 13, so that it can be meshed and connected with the tooth surface 1304 of the wrench male 1301 through the notch 705, and will not be interfered by the extension structure 4 at both ends of the tooth surface. Similarly, in other embodiments, the extension structure 4 can also be removed. After the extension structure is removed, the sliding connection between the tooth surface 1304 of the wrench body 13 and the guide surface 703 is not affected. When it is necessary to tighten or loosen the pipeline part, first select a suitable wrench body 13 according to the size of the target pipeline part. Manually separate the wrench male 1301 and the wrench female 1302, wrap them around the pipeline part and do not fall off, and ensure that the wrench surface 1303 is tightly attached to the surface of the pipeline part. Place the entire wrench body 13 into the annular guide surface 703 of the wrench housing 7, and confirm that the tooth surface 1304 is correctly meshed with the drive gear 19 in the power compartment 704. Close the wrench housing 7 and secure it with a fastening device. Start the power supply, and the drive motor drives the drive gear 19 to rotate, which drives the wrench body 13 to rotate via the meshing transmission mechanism, thereby completing the task of tightening or loosening the pipeline parts. Compared with the traditional manual tightening method, the present embodiment uses a drive motor as a power source, which can significantly reduce labor intensity and save a lot of time, and improve the efficiency of installing and unloading pipeline parts. On the other hand, methods such as motor torque overload protection can be used to protect manual safety, and it can ensure that the pre-tightening force applied to each tightened pipeline part is highly consistent, which is crucial to ensuring the safety and reliability of the entire system.

[0042] Embodiment 1

[0043] This embodiment is a specific application based on the above solution. Fig. 9 and Fig.10, the pipeline parts in this embodiment have structures such as a pipe joint 1, a valve body 2, a handle 21, an elbow 22 and a filter 6. There are elbows 22, ball valves, filters 6 and other devices that are obviously larger than the pipe joint 1 on both sides of the pipe joint 1 to be screwed. The volume of these devices will also be obviously larger than the internal space of the wrench. It is inconvenient to use the known wrench to disassemble and assemble the pipeline parts. Therefore, this embodiment adopts a separate wrench body 13, the wrench body 13 is split in half and then reassembled and installed, and then the wrench housing 7 is connected to the outside of the wrench body 13, and the wrench housing 7 is locked to prevent the wrench housing 7 from accidentally separating when the wrench body 13 rotates. Start the power supply, the motor drives the drive device to rotate, and drives the wrench body 13 to rotate via the meshing transmission mechanism, thereby completing the operation task of the pipeline parts. After use, the installation or disassembly process can be completely completed manually without the help of any additional professional tools. When closing or opening the wrench housing 7, it is only necessary to manually press the fastening device, and inserting or removing the wrench body 13 from the wrench housing 7 requires only a simple push-pull action. This method greatly facilitates the operation of on-site workers, especially when they do not carry all the tools, they can complete the work smoothly, thus ensuring the continuity and efficiency of the work.

[0044] Embodiment 2

[0045] This embodiment is an improvement on the driving device in the above scheme. Fig.11 In this embodiment, the driving device adopts a driving motor box worm 18, the worm 18 is located in the power compartment 704, one end of the worm 18 is connected to the driving motor, the tooth surface 1304 of the worm 18 can be meshed and connected with the tooth surface 1304 of the wrench male 1301 through the notch 705, and the worm gear 18 structure is used to realize the driving of the wrench body 13.

[0046] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A wrench chuck device, characterized in that: include: The wrench body comprises a male wrench and a female wrench which can be symmetrically connected, wherein the inner sides of the male wrench and the female wrench are both provided with a wrench face; the wrench faces of the male wrench and the female wrench can be clamped on the outer side of the position to be tightened or loosened; The driving device is arranged outside the wrench body and can drive the male wrench and the female wrench in the connected state to rotate synchronously.

2. The wrench chuck device according to claim 1, characterized in that: The male and female spanners are both semicircular, and the outer circumference is a toothed structure. After the end face of the male spanner and the end face of the female spanner are fixedly connected, the wrench surfaces of the two can form a complete plum blossom hole; the driving device can be meshed and transmission-connected with the outer tooth surface of the male or female spanner.

3. The wrench chuck device according to claim 2, characterized in that: A locking structure is fixed on the end surface of the male wrench, and a hole is opened on the end surface of the female wrench. When the male wrench is connected with the female wrench, the locking mechanism can be inserted into the corresponding hole.

4. The wrench chuck device according to claim 2, characterized in that: A locating pin is fixedly provided on the end face of the male wrench, a locating hole is provided on the end face of the female wrench, a locking hole is provided on the side wall of the locating pin, and a steel ball is connected to the inner wall of the locating hole through a spring; when the male wrench is docked with the female wrench, the locating pin can be inserted into the corresponding locating hole, and the end of the steel ball away from the spring is clamped in the locking hole on the corresponding side.

5. The wrench chuck device according to claim 2, characterized in that: It also includes a wrench housing, which includes a wrench guide rail male and a wrench guide rail nut hinged at one end, and the ends of the wrench guide rail male and the wrench guide rail nut away from the hinge point can be connected by a fastening device, and the inner sides of the wrench guide rail male and the wrench guide rail nut are provided with guide rail surfaces, and the two ends of the tooth surface of the wrench male can be slidably connected to the guide rail surface of the wrench guide rail male, and the two ends of the tooth surface of the wrench nut can be slidably connected to the guide rail surface of the wrench guide rail female; a power compartment is fixedly provided on the outer side of the wrench guide rail male, and a notch is provided at the power compartment to penetrate the guide rail surface, and the driving device is provided in the power compartment, and the driving device can be meshed and transmitted with the tooth surface of the wrench male through the notch.

6. The wrench chuck device according to claim 5, characterized in that: The driving device comprises a driving gear, which is arranged in the power compartment and is transmission-connected to a driving motor; the tooth surface of the driving gear can be meshed and transmission-connected with the tooth surface of the male spanner through the notch.

7. The wrench chuck device according to claim 5, characterized in that: The driving device comprises a worm, which is located in the power compartment. One end of the worm is transmission-connected to a driving motor, and the tooth surface of the worm can be meshed and transmission-connected with the tooth surface of the male spanner through the notch.

8. The wrench chuck device according to claim 5, characterized in that: An ear groove is arranged at one male end of the wrench guide rail, and an ear plate is arranged at one female end of the wrench guide rail. The ear plate is movably arranged in the ear groove, and the ear plate and the ear groove are movably connected by a rotating shaft.

9. The wrench chuck device according to claim 8, characterized in that: The fastening device includes an L-shaped buckle, one end of the buckle is movably connected to the end of the wrench guide male away from the ear groove through a buckle rotating shaft, and the end of the wrench guide nut away from the ear plate is provided with an extension protrusion. After the wrench guide male and the wrench guide nut are connected, the end of the buckle away from the buckle rotating shaft can be buckled on the extension protrusion.

10. The wrench chuck device according to claim 2, characterized in that: There are a plurality of wrench bodies, each of which has the same outer diameter, and each of which has a different inner diameter of a plum blossom hole formed on a wrench surface.

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