CN213165111U

CN213165111U - Bolt screwing tool

Info

Publication number: CN213165111U
Application number: CN202021640857.7U
Authority: CN
Inventors: 张强; 陈虹; 史如新; 张永生; 苏华; 王�锋
Original assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Changzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Changzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-05-11
Anticipated expiration: 2030-08-07

Abstract

The utility model provides a screw bolt instrument, include: the tool comprises a tool body, a female joint and a power transmission mechanism; female joint is used for forming general interface with the cooperation of male joint, and female joint includes: the receiving part, the second connecting part and the clamping groove; the second connecting part is provided with a third accommodating cavity for accommodating the power transmission mechanism; the tool body includes: the connecting rod, the fixed block, the flexible connecting section and the socket wrench; the power transmission mechanism comprises a transmission shaft which is connected with the transmission rod so as to drive the socket wrench to work. The unlocking and self-locking of the bolt screwing tool in the storing and taking process are met, the tool is prevented from falling off, and the firm locking and power transmission between the bolt screwing tool and the mechanical arm or the insulating rod are realized, so that the robot or manual live working is facilitated.

Description

Bolt screwing tool

Technical Field

The utility model relates to an live working field particularly, relates to a bolt screwing tool, especially has the bolt screwing tool of the general power interface of being convenient for change locking.

Background

The traditional manual live working is high in labor intensity, high in safety risk, severe in working environment, high in dependence degree on meteorological environment and high in altitude, high-risk and high-intensity operation. There are three main safety risks to traditional manual live working: the risk of falling at high altitude, wherein an operator needs to approach or enter a high-altitude operation position through a climbing pole or an insulating bucket arm vehicle; the risk of high-voltage electric shock, the operator needs to contact the high-voltage electrified body directly or indirectly through the insulating equipment, and the personal safety is influenced by the insulating property of the equipment; the human error risk, the mental state, the physical health condition, the misoperation, the illegal operation and the like of the operating personnel can cause the operating personnel to violate the safety distance, thereby threatening the personal safety.

Therefore, in order to improve the power supply reliability and service level, guarantee the personal safety of operators, reduce the labor intensity of the operators, develop the deep application of the artificial intelligence technology in the field of live working, research out the robot suitable for distribution network overhaul live working and the operation specification thereof, become a necessary way for power supply enterprises to strengthen the construction of distribution network overhaul operation capacity, and the method is also an important means for realizing the intelligent overhaul of a power grid and promoting the construction of three types and two networks.

In order to research a standard system of 10kV distribution network live working, from the perspective of safety and working efficiency, main factors restricting the standardized development of robots or manual live working in each actual robot or manual live working project are analyzed, a distribution network live working robot or manual standard system is established, and a standard interface suitable for the robots or manual live working and a batch of terminal tools with the standard interfaces need to be designed.

At present, a large number of live working end tools exist in the prior art, but due to different regions and manufacturers, the market of the end tools is disordered, and a unified standard interface is not provided, so that in order to standardize the development of robots or manual live working, the resource waste caused by the non-unified interface is avoided, so that a universal interface of a robot arm or a manual tool and the end tools needs to be developed, because a mechanical arm or an insulating rod used manually is in the tool table storing and taking process, the tool has a certain falling risk, and in order to prevent the tool from falling, the interface needs to meet the normal connecting capacity of the mechanical arm or the insulating rod and the end tools and also meet the unlocking and/or self-locking capacity in the storing and taking process.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a following technical scheme:

a bolting tool, comprising: the tool comprises a tool body, a female joint and a power transmission mechanism; the female connector is used for being matched with the male connector to form a universal interface; the male connector includes: the male connector is internally provided with a first accommodating cavity which is communicated up and down, and the plug part at least comprises two side walls; the female joint includes: the plug connector comprises a receiving part, a second connecting part and a clamping groove, wherein a second containing cavity is formed in the receiving part and used for containing the plug part, the clamping groove is formed in the second connecting part, a third containing cavity is formed in the second connecting part, and the third containing cavity is communicated with the second containing cavity; the tool body includes: the connecting rod, the fixed block, the flexible connecting section and the socket wrench; the power transmission mechanism comprises a transmission shaft; the transmission shaft is connected the one end of connecting rod, the other end of connecting rod is connected the one end of fixed block, the other end of fixed block is connected the one end of flexible connection section, the other end of flexible connection section is connected box spanner.

Further, the universal interface further comprises: the tool bearing plate, the unlocking mechanism and the self-locking mechanism; the tool bearing plate is provided with a tool bayonet and an inclined rail, the tool bayonet is in sliding fit with the clamping groove, and the inclined rail is provided with an inclined plane and a plug pin hole; the self-locking mechanism comprises: a male connector positioning hole formed in the side wall of the plug part of the male connector, a through hole formed in the side wall of the receiving part of the female connector, an inclined rail roller, a female connector self-locking pin, an extension spring and a spring positioning bolt; the unlocking mechanism comprises an unlocking bolt, a pin, an unlocking spring and a wedge-shaped sliding groove formed in the side wall of the plug part of the male connector.

Further, the female joint self-locking pin penetrates through the through hole, and the inclined rail roller and the spring positioning bolt are arranged on the part, outside the side wall of the receiving part, of the female joint self-locking pin; one end of the extension spring is connected with the spring positioning bolt, and the other end of the extension spring is connected with the side wall of the receiving part; the inclined rail roller is arranged at the upper part of the female joint self-locking pin, and the spring positioning bolt is arranged at the lower part of the female joint self-locking pin and is opposite to the inclined rail roller; the inclined plane is arranged at one end of the inclined rail and is in sliding fit with the inclined rail roller.

Further, still be provided with on female joint's the receiving part lateral wall and hold the unblock bolt with the first cavity of unblock spring, and hold the second cavity that the pin removed, the pin set up in on the unblock bolt, and pin axis perpendicular to unblock bolt axis, unblock spring one end is connected unblock bolt, other end butt the first cavity seal end, the unblock bolt can stretch out the open end of first cavity and stretch into in the inclined rail the bolt hole.

Further, the power transmission mechanism includes: a first power transmission mechanism and a second power transmission mechanism; the first power transmission mechanism is arranged in the first accommodating cavity; the third accommodating cavity is internally provided with the second power transmission mechanism.

Further, first power transmission device includes the head that rotates that the upper end set up, drive interface and operation interface have been seted up to first connecting portion, drive interface is connected with actuating mechanism, operation interface is connected with arm or insulator spindle.

Further, second power transmission device includes the axle sleeve the transmission shaft and location bearing, the keyway that the axial set up is seted up to the axle sleeve lateral wall, the axle sleeve lower part is provided with rotates the groove, be provided with the connection key on the transmission shaft lateral wall, the connection key with keyway sliding fit, the bottom is provided with reset spring in the axle sleeve, rotate the groove with the transmission is connected in the cooperation of rotation head.

Further, the rotating head is a cross key; the rotating groove is a cross groove.

Further, the lateral wall of plug portion is four, the lateral wall of receiving portion is four.

Furthermore, the outer side wall of the second connecting part is provided with two clamping grooves, and the clamping grooves are in sliding fit with the inner edges of the tool bayonets.

Has the advantages that: the bolt screwing tool with the universal power interface convenient for replacing and locking not only meets the normal connecting capacity and the power transmission capacity of the mechanical arm or the insulating rod and the bolt screwing tool, but also meets the self-locking of the mechanical arm or the insulating rod when the bolt screwing tool is unlocked with the tool bearing plate in the storing and taking process, prevents tools from falling off, realizes the firm locking and the power transmission of the bolt screwing tool and the mechanical arm or the insulating rod, and is convenient for a robot or manual live working.

Other advantages of the present invention will be described in the detailed description, and those skilled in the art can understand the technical advantages brought by the technical features and technical solutions through the descriptions of the technical features and the technical solutions.

Drawings

Preferred embodiments according to the present invention will be described below with reference to the accompanying drawings. In the figure:

FIG. 1: the side view section structure schematic diagram of the universal interface under the state that the male joint and the female joint are separated;

FIG. 2: the side view section structure schematic diagram of the general interface in the state that the male connector is inserted into the female connector;

FIG. 3: a schematic view of a cross-sectional structure of a general interface viewed from above when a male connector is inserted into a female connector;

FIG. 4: the installation schematic diagram of the universal interface and the tool bearing plate;

FIG. 5: a schematic diagram of a side-view cross-sectional structure of a male connector of the universal interface;

FIG. 6: a schematic view of a cross-sectional structure of a male connector of the universal interface from above;

FIG. 7: a schematic side view cross-sectional structure of a female connector of the universal interface;

FIG. 8: a schematic view of a bottom cross-sectional structure of a female connector of the universal interface;

FIG. 9: the schematic side-view cross-sectional structure of another male connector of the universal interface;

FIG. 10: a schematic view of a cross-sectional structure of another male connector of the universal interface from above;

FIG. 11: the side view section structure schematic diagram of another female joint of the universal interface;

FIG. 12: the schematic view of the bottom cross section structure of another female joint of the universal interface;

FIG. 13: the structure of the bolt screwing tool with the universal interface is shown schematically.

Detailed Description

The specific structure of the universal interface and the end tool having the same will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-12, the universal interface includes: a male connector 10, a female connector 20, and a carrier plate 30. The male connector 10 includes: the male connector 10 comprises a plug part 101 and a first connecting part 102, wherein a first accommodating cavity 103 which is through up and down is formed in the male connector 10, and the plug part 101 at least comprises two side walls. The female joint 20 includes: the plug connector comprises a receiving portion 201, a second connecting portion 202 and a clamping groove 203, wherein a second accommodating cavity 204 is formed in the receiving portion 201 and used for accommodating the plug portion 101, the clamping groove 203 is formed in the second connecting portion 202, a third accommodating cavity 205 is formed in the second connecting portion 202, and the third accommodating cavity 205 is communicated with the second accommodating cavity 204. The tool carrier plate 30 has a tool holder 301 and a ramp 302, the tool holder 301 is slidably engaged with the slot 203, the ramp 302 has an inclined surface and a latch hole 303, and the ramp 302 is disposed at a lower portion of the tool carrier plate 30. Preferably, two locking grooves 203 are arranged on the outer side wall of the second connecting portion 202, and the locking grooves 203 are in sliding fit with the inner edge of the tool bayonet 301. Preferably, the number of the sidewalls of the plug portion may be four, and the number of the sidewalls of the receiving portion may be four.

Still include a self-locking mechanism, self-locking mechanism includes: a male connector positioning hole 104 formed in the side wall of the plug part 101 of the male connector 10, a through hole 206 formed in the side wall of the receiving part of the female connector 20, a ramp roller 207, a female connector self-locking pin 208, an extension spring 209 and a spring positioning bolt 210; a female joint self-locking pin 208 penetrates through the through hole 206, a part of the female joint self-locking pin 208, which is positioned outside the side wall of the receiving part, is provided with a ramp roller 207 and a spring positioning bolt 210, one end of an extension spring 209 is connected with the spring positioning bolt 201, and the other end of the extension spring is connected with the side wall of the receiving part; the inclined rail roller 207 is arranged at the upper part of the female joint self-locking pin 208, and the spring positioning bolt 210 is arranged at the lower part of the female joint self-locking pin 208 and is opposite to the inclined rail roller 207; the inclined surface is arranged at one end of the inclined rail 302 and is in sliding fit with the inclined rail roller 207; when the plug portion 101 of the male connector 10 is completely inserted into the receiving portion 201 of the female connector 20, the male connector positioning hole 104 corresponds to the through hole 206. Preferably, a limiting groove 2081 is formed in the female connector self-locking pin 208, a limiting column 2082 is arranged in the side wall of the female connector receiving portion, and one end of the limiting column 2082 extends into the through hole 206 to be matched with the limiting groove 2081, so as to limit the moving distance of the female connector self-locking pin 208 in the through hole 206.

Still include an unlocking mechanism, unlocking mechanism includes: the unlocking bolt 211, the pin 212 and the unlocking spring 213 of the female connector 20 and the wedge-shaped sliding groove 105 formed on the side wall of the plug part 101 of the male connector 10; the opening of the wedge-shaped chute 105 is gradually increased from bottom to top; the side wall of the receiving part of the female joint 20 is further provided with a first cavity 214 for accommodating an unlocking bolt 211 and an unlocking spring 213 and a second cavity 215 for accommodating the movement of the pin 212, the pin 212 is arranged on the unlocking bolt 211, the axis of the pin is perpendicular to the axis of the unlocking bolt, one end of the unlocking spring 213 is connected with the unlocking bolt 211, the other end of the unlocking spring 213 is abutted against the sealed end of the first cavity 214, and the unlocking bolt 211 can extend out of the open end of the first cavity 214 and extend into a bolt hole 303 of the inclined rail 302; a bolt hole 303 is arranged at the other end of the inclined rail 302 and is used for the unlocking bolt 311 to extend into; the wedge-shaped sliding groove 105 of the plug portion 101 of the male connector 10 is in sliding fit with the pin 212, and the pin 212 is driven by the wedge-shaped sliding groove 105 to move along with the insertion of the plug portion 101 of the male connector into the female connector receiving portion 201, and simultaneously drives the unlocking latch 211 to move so as to be separated from the latch hole 303 of the inclined rail 302, thereby unlocking the female connector 20 and the tool bearing plate 30. Preferably, the receiving portion of the female connector has a side wall formed with a guide groove for guiding the pin 212.

Still include power transmission mechanism 40, power transmission mechanism includes: the first power transmission mechanism 41 and the second power transmission mechanism 42 are arranged in the first accommodating cavity 103, the first power transmission mechanism 41 comprises a driving shaft, the driving shaft is in sliding fit with the inner wall of the first accommodating cavity 103, the upper end of the driving shaft is a rotating head 411, the first connecting portion 102 is provided with a driving interface 106 and an operating interface 107, the driving interface 106 is connected with a driving mechanism (such as a motor), the operating interface 107 is connected with a mechanical arm or an insulating rod, the operating interface 107 is positioned at the bottom of the first connecting portion 102, the driving interface 106 is positioned at the side of the first connecting portion 102, and the power output end of the driving mechanism extends into the first connecting portion 102 to be in power connection with the driving shaft; a third accommodating cavity 205 communicated with the second accommodating cavity 204 is arranged in the second connecting part 202 of the female joint 20, a second power transmission mechanism 42 is arranged in the third accommodating cavity 205, the second power transmission mechanism 42 comprises a shaft sleeve 421, a transmission shaft 422 and a positioning bearing 423, a key groove 424 axially arranged on the side wall of the shaft sleeve 421, a rotating groove 425 is arranged at the lower part of the shaft sleeve 421, a connecting key 426 is arranged on the side wall of the transmission shaft 422, the connecting key 426 is in sliding fit with the key groove 424, a return spring 427 is arranged at the inner bottom end of the shaft sleeve 421, the lower end of the return spring 427 abuts against the inner bottom surface of the shaft sleeve, and the upper end of the return spring; the rotating groove 425 is connected with the rotating head 411 in a matching way for transmission. Preferably, the rotator 411 is a cross key; the rotation groove 425 is a cross groove.

Also included is a communication transmission mechanism 50, which includes: the first communication transmission mechanism 51 and the second communication transmission mechanism 52, wherein the first communication transmission mechanism 51 is accommodated in the first accommodating cavity 103, the second communication transmission mechanism 52 is accommodated in the second accommodating cavity 204 and/or the third accommodating cavity 205, and a plurality of pins are arranged on the first communication transmission mechanism 51; the second communication transmission mechanism 52 is provided with a plurality of pins corresponding to the plurality of pins on the first communication transmission mechanism one to one, and the plurality of pins are a TX pin, a GND pin, an RX pin, and a VCC pin, respectively.

The working process of replacing and locking the universal interface is as follows:

when the end tool is used, firstly, the plug part 101 of the male connector is inserted into the receiving part 201 of the female connector, the wedge-shaped chute 105 extends into the second accommodating cavity 204 of the receiving part along with the insertion of the plug part, the pin 212 moves in the second cavity 215 under the guidance of the wedge-shaped chute 105, and simultaneously drives the unlocking pin 211 to move in the first cavity 214, so that the unlocking pin 211 is gradually separated from the pin hole 303 on the inclined rail 302, when the plug part 101 of the male connector is completely inserted into the receiving part 201 of the female connector, the male connector positioning hole 104 corresponds to the through hole 206, the unlocking pin 211 is completely separated from the pin hole 303, and the female connector 20 and the tool bearing plate 30 complete unlocking; then, gradually moving the female joint 20 out of the tool bayonet 301, moving the ramp roller 207 along the inclined surface of the ramp 302 under the action of the tension spring, and gradually disengaging from the blocking of the ramp 302; meanwhile, the female connector self-locking pin 208 moves into the male connector positioning hole 104 along with the movement of the ramp roller 207, when the female connector 20 is completely moved out of the tool bayonet 301, the ramp roller 207 is completely separated from the ramp 302 and the female connector self-locking pin 208 is inserted into the male connector positioning hole 104, so that the male connector 10 and the female connector 20 complete self-locking.

After the end tool is used, aligning the locking groove 203 on the second connecting portion 202 of the female connector 20 with the tool bayonet 301, gradually moving the female connector 20 into the tool bayonet 301, guiding the ramp roller 207 by the ramp inclined surface to overcome the pulling force of the tension spring 209, so that the female connector self-locking pin 208 gradually disengages from the male connector positioning hole 104, when the female connector 20 is completely locked into the tool bayonet 301, the female connector self-locking pin 208 completely disengages from the male connector positioning hole 104, the male connector 10 and the female connector 20 release self-locking, and the unlocking pin 211 aligns with the pin insertion hole 303 of the ramp; then, the pin 212 is gradually released from the wedge-shaped sliding groove 105 by moving the male connector downward, so that the unlocking pin 211 is gradually moved toward the pin hole 303 of the ramp by the unlocking spring 213, and when the male connector 10 is completely moved out of the female connector 20, the unlocking pin 211 is inserted into the pin hole 303, thereby locking the female connector 20 with the tool carrier plate 30.

Further, a general power interface or a general communication interface is formed by providing the power transmission mechanism 40 or the communication transmission mechanism 50 in a general interface, respectively. When the power transmission mechanism 40 is arranged, when the male connector 10 and the female connector 20 complete self-locking, the first power transmission mechanism 41 is in transmission connection with the second power transmission mechanism 42; specifically, the rotating head 411 disposed at the upper end of the first power transmission mechanism 41 is in transmission fit with the rotating groove 425 at the lower portion of the shaft sleeve 421 in the second power transmission mechanism 42. When the communication transmission mechanism 50 is set, when the male connector 10 and the female connector 20 complete self-locking, the first communication transmission mechanism 51 and the second communication transmission mechanism 52 are in communication connection.

A live-working end-tool with a universal interface comprising: a lead cutting tool, a clamping tool, a bolt tightening tool, an insulation recovery tool, a manual stripping tool, and a wire clamp installation tool.

As shown in fig. 13, the bolt tightening tool 80 includes: the tool comprises a tool body, a female connector and a power transmission mechanism, wherein the female connector is used for being matched with a male connector to form a universal interface; preferably, the universal interface further comprises the aforementioned tool carrier plate 30, unlocking mechanism and self-locking mechanism; the tool body includes: a connecting rod 801, a fixing block 802, a flexible connecting section 803 and a socket wrench 804; the power transmission mechanism 40 includes a propeller shaft 422; the transmission shaft 422 is connected with one end of the connecting rod 801, the other end of the connecting rod 801 is connected with one end of the fixing block 802, the other end of the fixing block 802 is connected with one end of the flexible connecting section 803, and the other end of the flexible connecting section 803 is connected with the socket wrench 804.

It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.

It will be understood that the above-described embodiments are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions may be made in the details described herein by those skilled in the art without departing from the basic principles of the invention.

Claims

1. A bolt turning tool (80), comprising: a tool body, a female joint (20) and a power transmission mechanism (40); the female connector (20) is used for being matched with the male connector (10) to form a universal interface; the male connector (10) comprises: the plug connector comprises a plug part (101) and a first connecting part (102), wherein a first accommodating cavity (103) which is communicated up and down is formed in the male connector (10), and the plug part (101) at least comprises two side walls; the female joint (20) includes: the plug connector comprises a receiving part (201), a second connecting part (202) and a clamping groove (203), wherein a second accommodating cavity (204) is formed in the receiving part (201) and used for accommodating the plug part (101), the clamping groove (203) is formed in the second connecting part (202), a third accommodating cavity (205) is formed in the second connecting part (202), and the third accommodating cavity (205) is communicated with the second accommodating cavity (204); the tool body includes: the connecting rod (801), the fixing block (802), the flexible connecting section (803) and the socket wrench (804); the power transmission mechanism (40) includes a propeller shaft (422); the transmission shaft (422) is connected with one end of the connecting rod (801), the other end of the connecting rod (801) is connected with one end of the fixing block (802), the other end of the fixing block (802) is connected with one end of the flexible connecting section (803), and the other end of the flexible connecting section (803) is connected with the socket wrench (804).

2. The bolting tool of claim 1, wherein said universal interface further comprises: a tool bearing plate (30), an unlocking mechanism and a self-locking mechanism; the tool bearing plate (30) is provided with a tool bayonet (301) and an inclined rail (302), the tool bayonet (301) is in sliding fit with the clamping groove (203), and the inclined rail (302) is provided with an inclined surface and a plug pin hole (303); the self-locking mechanism comprises: a male connector positioning hole (104) formed in the side wall of the plug part of the male connector, a through hole (206) formed in the side wall of the receiving part of the female connector, a ramp roller (207), a female connector self-locking pin (208), an extension spring (209) and a spring positioning bolt (210); the unlocking mechanism comprises an unlocking bolt (211), a pin (212), an unlocking spring (213) and a wedge-shaped sliding groove (105) formed in the side wall of the plug part of the male connector.

3. The bolting tool according to claim 2, wherein said female joint self locking pin (208) is disposed through said through hole (206), and a portion of said female joint self locking pin (208) located outside a side wall of the receiving portion is provided with said ramp roller (207) and said spring positioning pin (210); one end of the extension spring (209) is connected with the spring positioning bolt (210), and the other end of the extension spring is connected with the side wall of the receiving part; the inclined rail roller (207) is arranged at the upper part of the female joint self-locking pin (208), and the spring positioning bolt (210) is arranged at the lower part of the female joint self-locking pin (208) and is opposite to the inclined rail roller (207); the inclined surface is arranged at one end of the inclined rail (302) and is in sliding fit with the inclined rail roller (207).

4. The bolt screwing tool according to claim 2 or 3, wherein a first cavity (214) for accommodating the unlocking bolt (211) and the unlocking spring (213) and a second cavity (215) for accommodating the movement of the pin (212) are further arranged on the side wall of the receiving part of the female joint, the pin (212) is arranged on the unlocking bolt (211), the pin axis is perpendicular to the unlocking bolt axis, one end of the unlocking spring (213) is connected with the unlocking bolt (211), the other end of the unlocking spring abuts against the sealed end of the first cavity (214), and the unlocking bolt (211) can extend out of the open end of the first cavity (214) and into the bolt hole (303) of the inclined rail (302).

5. The bolting tool according to claim 1, wherein said power transmission mechanism (40) comprises: a first power transmission mechanism (41) and a second power transmission mechanism (42); the first power transmission mechanism (41) is arranged in the first accommodating cavity (103); the third accommodating cavity (205) is internally provided with the second power transmission mechanism (42).

6. The screwing tool of claim 5, characterized in that the first power transmission mechanism (41) comprises a rotating head (411) arranged at the upper end, the first connecting part (102) is provided with a driving interface (106) and an operating interface (107), the driving interface (106) is connected with the driving mechanism, and the operating interface (107) is connected with a mechanical arm or an insulating rod.

7. The screwing tool according to claim 6, wherein the second power transmission mechanism (42) comprises a shaft sleeve (421), the transmission shaft (422) and a positioning bearing (423), a side wall of the shaft sleeve (421) is provided with an axially arranged key groove (424), a lower part of the shaft sleeve (421) is provided with a rotating groove (425), a side wall of the transmission shaft (422) is provided with a connecting key (426), the connecting key (426) is in sliding fit with the key groove (424), an inner bottom end of the shaft sleeve (421) is provided with a return spring (427), and the rotating groove (425) is in fit connection with the rotating head (411) for transmission.

8. The screwing tool according to claim 7, characterized in that said rotating head (411) is a cross key; the rotating groove (425) is a cross groove.

9. The bolting tool according to claim 1, wherein: the number of the side walls of the plug portion (101) is four, and the number of the side walls of the receiving portion (201) is four.

10. The bolting tool according to claim 2, wherein: the outer side wall of the second connecting portion (202) is provided with two clamping grooves (203), and the clamping grooves (203) are in sliding fit with the inner edge of the tool bayonet (301).