WO2020087741A1

WO2020087741A1 - Quick-replacement gun type bolt tightening device

Info

Publication number: WO2020087741A1
Application number: PCT/CN2018/124738
Authority: WO
Inventors: 董育伟; 潘长江; 刘磊; 姜海林; 王英宇; 郝俊杰; 朱晶晶; 候延顺
Original assignee: 淮阴工学院
Priority date: 2018-10-30
Filing date: 2018-12-28
Publication date: 2020-05-07
Also published as: CN109176379A; CN109176379B

Abstract

Disclosed in the present invention is a quick-replacement gun type bolt tightening device. An electric motor is fixed in a main shaft shell, a motor output shaft of the electric motor is in transmission connection with a bolt tightening device ferrule through a transmission shaft, the bolt tightening device ferrule is rotationally connected to a vertical plate, the vertical plate is fixedly connected to a front end of the main shaft shell, a bolt tightening device rolling wheel is arranged between the main shaft shell and the vertical plate, the bolt tightening device rolling wheel is rotationally connected to the transmission shaft, the bolt tightening device rolling wheel is provided with a plurality of bolt tightening device storing through holes, one bolt tightening device unit is placed in each bolt tightening device storing through hole, a bolt tightening device pushing and pulling device is arranged in the main shaft shell, a handgrip is fixed to a rear side of the bottom of the main shaft shell, a battery is fixed in the handgrip, and a button used for controlling the electric motor to rotate is arranged in front of the handgrip. As can be seen from the structure, the quick-replacement gun type bolt tightening device realizes the quick replacement of the bolt tightening device unit, and the operation efficiency is improved.

Description

Quick-change gun bolt tightener

Technical field

The invention relates to the technical field of a bolt tightener, in particular to a quick-change gun bolt tightener.

Background technique

Bolts (commonly known as screws): mechanical parts, cylindrical threaded fasteners with nuts. A type of fastener consisting of a head and a screw (a cylinder with an external thread) needs to be matched with a nut to fasten and connect two parts with through holes. This form of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

The bolts have various head shapes: cylindrical head, semi-counter-sunk head, countersunk head, spherical cylindrical head, pan head, semi-circular head, hexagonal head. Corresponding to the different head shapes of the bolts, different bolt tightening tools need to be used, including a flat screwdriver (commonly known as a screwdriver), a cross screwdriver, a Phillips wrench, an open-end wrench, a socket wrench, an allen wrench, a star wrench, etc., different The size of the bolts is different, and the size of the above bolt tightening tools is also different.

In the process of actually disassembling a product or equipment, you will encounter different bolts, you need to be equipped with corresponding bolt tightening tools, which makes the operator inconvenient to carry, and you need to replace the bolt tightening tools at any time during use, resulting in Work efficiency is low.

Summary of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a quick replacement gun bolt tightener by placing a set of bolt tightener units in the bolt tightener runner and replacing the bolt tightener unit It becomes directly through the push-pull operation of the push-pull cover, which realizes the quick replacement of the bolt tightener unit and improves the operation efficiency.

The technical solutions adopted by the present invention are:

The quick-change gun bolt tightener includes a spindle housing, a motor is fixed in the spindle housing, the motor output shaft of the motor extends forward, and is connected to the front end of the spindle housing through a transmission shaft and a driving sleeve , The bolt tightener ferrule is rotatably connected to the vertical plate, and the vertical plate is fixedly connected to the front end of the spindle shell through the connection plate, and a bolt tightener runner is provided between the spindle shell and the vertical plate, and the bolt is tightened Axial through hole A provided on the rotor of the gear is coaxially sleeved on the transmission shaft and is rotatably connected to the transmission shaft. A plurality of bolts are evenly distributed on the end surface of the bolt tightener rotor, with its axis as the center of the circle A bolt tightener unit is placed in the through hole of the bolt tightener storage, and the shaft center of the bolt tightener ferrule is located on the cylindrical surface surrounded by the axis of the bolt tightener storage through hole On the back side of the bolt tightener runner, there is a bolt tightener push-pull device located in the spindle housing, the bolt tightener push-pull device and the bolt tightener ferrule are coaxially arranged to tighten the bolt tightener unit From Push the bolt tightener storage through hole in the bolt tightener ferrule position into the bolt tightener ferrule, or pull the bolt tightener unit from the bolt tightener ferrule back to the bolt tightener corresponding to the bolt tightener ferrule position Stored in the through hole; a handle is fixed on the rear side of the bottom of the spindle housing, a battery is fixed in the handle, and a button for controlling the rotation of the motor is provided on the bottom of the spindle housing and in front of the handle.

A further improvement of the present invention is that the output shaft of the motor is fixed with a sun gear A, a plurality of planet gears A are meshed and transmitted around the sun gear A, the planet gears A are respectively fixed to one end of the rotating shaft A, and the rotating shaft The other end of A is fixed with a planetary gear B, and the planetary gears B are all meshed and connected with the sun gear B. The rotating shaft B of the sun gear B is coaxial with the output shaft of the motor. The end of the rotating shaft B away from the motor is connected with the transmission shaft Coaxial transmission connection. The two-stage transmission of the two planetary gear sets ensures the stability of the transmission.

A further improved solution of the present invention is that the rotating shaft A is rotatably connected to a planet carrier, and the planet carrier is fixedly connected to the inner wall of the main shaft shell.

A further improvement solution of the present invention is that the rotating shaft A and the rotating shaft B are rotatably connected to the planet carrier through bearings, respectively.

A further improvement of the present invention is that the diameter of the sun gear A is smaller than the diameter of the planet gear A, the diameter of the planet gear A is larger than the diameter of the planet gear B, and the diameter of the planet gear B is smaller than the diameter of the sun gear B. Through the setting of the diameter of each gear of the two planetary gear sets, the effect of speed reduction and torque increase is achieved.

A further improvement of the present invention is that the transmission shaft is coaxially connected to the rotating shaft B through a coupling. Through the installation of the coupling, it is easy to disassemble and assemble the rotating shaft B.

A further improved solution of the present invention is that the push-pull device of the bolt tightener includes a sleeve sleeved on the transmission shaft, and a push-pull tube on the upper side of the transmission shaft that reciprocates along the axis of the transmission shaft. It is rotationally connected to the transmission shaft, and the front and rear ends of the casing are axially limited to the transmission shaft through the vertical plate and the main shaft shell; the push-pull tube is movably connected to the casing, and the shaft center set by the transmission shaft and the casing The through hole B is rotated and connected. Through the role of the casing and the push-pull tube, the push-out and retraction of the bolt-tightener unit in the bolt-tightener runner is realized.

A further improvement solution of the present invention is that the surface of the sleeve is evenly distributed with a plurality of axially arranged strip grooves, and the adjacent two strip grooves are respectively connected through a connection groove, and the connection groove is located in the strip groove And the connecting groove is inclined in the same direction; at the bottom of the push-pull tube, a slider is fixed at the position of the rear end, the slider moves along the strip groove and the connecting groove, the push-pull tube The outer diameter of is matched with the inner diameter of the storage hole of the bolt tightener; the number of the strip grooves is equal to the number of storage holes of the bolt tightener runner. The strip groove and the connection groove provided on the surface of the sleeve enable the push-pull tube to rotate in the process of being pulled back.

A further improved solution of the present invention is that the bar-shaped groove includes a shallow groove and a deep groove, the shallow groove is located on the rear side of the deep groove, and the forward extending surface of the rear groove wall of the connecting groove and the corresponding bar groove The vertical surface of the step formed at the connection of the shallow groove and the deep groove coincides, the groove bottom of the connection groove is inclined upward from front to back along the direction of the connection groove, and the depth of the groove bottom at the front end of the connection groove is greater than or equal to the depth of the deep groove The depth of the bottom of the groove and the bottom of the connecting groove is less than or equal to the depth of the shallow groove. Through the setting of deep groove, shallow groove and transition groove bottom, the push-pull tube is driven to rotate automatically during the process of pulling back.

A further improvement of the present invention is that the front end nozzle of the push-pull tube is open, a notch A is provided on the upper side of the rear end of the side wall of the push-pull tube, and an operation stand is provided on the lower part of the rear end side wall of the push-pull tube. The push-pull tube is provided with a push-pull rod, the outer wall of the push-pull rod matches the inner wall of the push-pull tube, the rear end of the push-pull rod is located in the gap A, and the front end of the push-pull rod extends forward from the front end tube of the push-pull tube The front end of the push-pull rod is provided with a limit baffle that matches the outer diameter of the push-pull tube. The upper end of the rear end of the push-pull rod is fixed with a bump A upward, and the front face of the push-pull rod is located on the side of the push-pull rod. Pull hook on one side. Through the push-pull rod provided in the push-pull tube, the push-out and pull-back of the bolt tightener unit in the wheel of the bolt tightener is realized.

A further improved solution of the present invention is that the pull hook is fixed to the front end of the axial long rod, and the rear end of the axial long rod is provided with a protrusion B on the side where the pull hook is located, and the push-pull rod corresponds to the axial long rod An axial slot is provided, the front end of the axial slot extends to the front end of the push-pull rod, and extends toward the side wall of the push-pull rod corresponding to the side of the hook to form a notch B, and the rear end of the axial slot extends To a position within the range of the notch A, and to the side wall of the push-pull rod corresponding to the side of the bump B, a strip-shaped through hole A is formed, and the bump B is located in the strip-shaped through hole A. Through the action of the pull hook and the protrusion B, the pull hook can move in the radial direction of the push-pull rod, and the bolt tightener unit is connected and disconnected.

A further improved solution of the present invention is that an end face of the axial long rod facing away from the strip-shaped through hole A is provided with a convex fulcrum, and the convex fulcrum and the axial slot face away from the strip-shaped through hole A- The groove wall on the side contacts, so that the axial long rod forms a lever structure; in the free state, the axial long rod corresponding to one end of the convex block B is raised, and the convex block B extends outwardly from the strip-shaped through hole A, the The distance between the pull hook and the axis of the push-pull rod is less than or equal to the radius of the limit baffle. Through the function of the protrusion fulcrum, the axial long rod connecting the hook and the bump B forms a lever structure, which is convenient for controlling the relative position of the hook by the relative position of the bump B.

A further improvement of the present invention is that the side wall surface of the push-pull tube is provided with a strip-shaped through hole B communicating with the inside and outside of the push-pull tube, and the top of the outer side wall of the push-pull bar is located between the protrusion A and the limit baffle A convex column is provided at the place, the diameter of the convex column matches the width of the strip-shaped through-hole B, and moves along the strip-shaped through-hole B, the strip-shaped through-hole B is oriented in the direction from front to back One side of the push-pull tube is inclined; when the protruding column moves to the front end of the strip-shaped through hole B, the bump A is located above the push-pull rod, and when the protruding column moves to the rear end of the strip-shaped through hole B, the strip The through-hole A is located above the push-pull rod, and the convex block A is located on the side of the push-pull rod; the convex column B in the strip-shaped through-hole A is always located in the notch within the range of the movement of the convex column along the strip-shaped through-hole B In A, and protruding outward from the strip-shaped through hole A, the distance between the pull hook and the axis of the push-pull rod is less than or equal to the radius of the limit baffle. Through the action of the strip-shaped through hole B and the convex column, the push-pull rod and the push-pull tube can also rotate relative to each other during the relative axial movement.

A further improvement solution of the present invention is that when the push-pull tube and the push-pull rod move backward along the strip groove to the maximum stroke, the protruding column is located at the foremost end of the strip-shaped through-hole B, and at this time, the bump B is located at a part of the push-pull rod On the side, the inner wall of the main shaft shell is provided with a bump C at a position corresponding to the bump B. The bump B in the strip-shaped through hole A is blocked by the bump C and is located in the push-pull rod. The distance between the long rod and the axis of the push-pull rod is greater than the radius of the limit baffle. Through the action of the convex block C, the convex block B in the strip-shaped through hole B is controlled to move inward in the radial direction of the push-pull rod, thereby driving the pulling hook to move outward in the radial direction of the push-pull rod.

A further improvement of the present invention is that, when the bump A is located on the side of the push-pull rod, the rear end surface of the bump A and the inner wall of the spindle housing, corresponding to the push-pull rod limit provided on the side of the bump A The front face of the block fits. Through the function of the push-pull rod limit block, the bolt tightener unit that is pushed out of the bolt tightener storage through hole and connected to the bolt tightener ferrule has an axial support force when the bolt is screwed, avoiding the bolt tightener The unit is retracted due to the axial force during the screwing of the bolt.

A further improved solution of the present invention is that the push-pull rod limiting block is located in the slot of the limit block, a spring A is provided between the slot of the push-pull rod limiting block and the slot bottom of the slot of the limiting block, and the push-pull rod limits The block reciprocates along the direction of the limit block groove in a direction perpendicular to the inner wall of the spindle housing; when the spring A is in a natural state, the push-pull rod limit block extends out of the limit block groove, and the push-pull rod limit block extends out of the spindle The distance of the inner wall of the shell is smaller than the compression deformation distance of the spring A. Through the action of the spring A, the protrusion A of the push-pull rod can normally pass through the limit block of the push-pull rod.

A further improved solution of the present invention is that the rear end surface of the portion of the push-pull rod limiting block that protrudes from the inner wall of the main shaft housing is along a slope inclined outward from front to back. By setting the rear end surface of the push-pull rod limiting block as an inclined surface, it is more convenient for the convex block A of the push-pull rod to pass the push-pull rod limiting block normally.

A further improvement of the present invention is that the top of the spindle housing is provided with a push-pull cover, the bottom front end of the push-pull cover is fixedly connected to the operation vertical plate of the push-pull tube, and the front end of the top surface of the spindle housing is fixed with a push-pull cover limit Block A, a push-pull cover limit block B is fixed to the rear end of the top surface of the spindle housing, and the push-pull cover moves within a range between the push-pull cover limit block A and the push-pull cover limit block B. Through the function of the push-pull cover, the push-pull operation of the push-pull tube and the push-pull rod is facilitated.

A further improvement of the present invention is that when the sliding cover moves forward to the maximum stroke, the front end surface of the sliding rod just clamps the bolt tightener unit and the bolt tightener ferrule; when the sliding cover moves back to the maximum stroke At the time, the front end of the push-pull rod is located on the rear side of the runner of the bolt tightener.

A further improvement solution of the present invention is that the sliding cover is provided with flanging downwards on both sides, and the two side walls of the main shaft shell, the west side and the sliding cover are provided with sliding grooves.

A further improvement of the present invention is that the outer surface of the sliding cover is provided with a non-slip pattern A.

A further improvement of the present invention is that the top of the spindle housing, corresponding to the movement range of the protrusion A, is provided with a notch communicating with the inside and outside of the spindle housing, the notch extending forward to the front end of the spindle housing.

A further improved solution of the present invention is that the push-pull cap limiting block A is provided at the front end of the notch and connects the groove walls on both sides of the slot, and the bottom of the push-pull cap limiting block A is higher than the protrusion A Top height.

A further improvement solution of the present invention is that the bolt tightener unit includes a bolt tightener head, a bolt tightener main rod, a rod body clamping part, and a hook pull ring groove in order from front to back. The inner wall is a conical arc surface, the rod body clamping part is engaged with the inner wall of the bolt tightener ferrule to an interference fit, and the hook and pull ring groove is matched with the hook. Through the structure of the bolt tightener unit, the clamping with the bolt tightener ferrule and the connection with the pulling hook of the push-pull rod can be achieved.

A further improvement of the present invention is that the front end of the rod body clamping portion is provided with a plurality of axial ribs along the axial direction, and the axial ribs are evenly distributed on the surface of the main rod of the bolt tightener. The effect of the axial ribs not only reduces the weight of the bolt tightener unit, but also reduces the deformation amount of the bolt tightener ferrule, and further improves the clamping degree of the bolt tightener unit.

A further improvement of the present invention is that the front end surface of the axial rib is provided with a transition slope. The function of the transition slope is convenient for the bolt tightener unit to enter the bolt tightener ferrule.

A further improvement of the present invention is that an annular transition slope A is provided between the main rod of the bolt tightener and the head of the bolt tightener. The arrangement of the annular transition slope A further facilitates the bolt tightener unit to enter the bolt tightener ferrule.

A further improvement of the present invention is that the front groove wall of the hook-pull groove is an annular transition slope B. Through the function of the annular transition slope B, it is convenient to connect the hook and the hook-and-loop groove.

A further improvement of the present invention is that the rear side of the hook-pull ring groove is a hook-pull baffle, and the diameter of the hook-pull baffle is less than or equal to the diameter of the clamping portion of the rod body and greater than the diameter of the bottom of the hook-pull ring groove . Through the function of the hook and pull baffle, the connection effect of the hook and the hook and pull ring groove is ensured.

A further improved solution of the present invention is that the bolt tightener runner is sleeved on the sleeve through the axial through hole A, and the outer wall of the sleeve corresponding to the position of the bolt tightener runner is provided with at least A limit ball, the shaft through hole A of the bolt tightener runner is provided with a plurality of ball limit grooves matching the limit ball, and the angle between two adjacent bolt tightener storage through holes is An integer multiple of the included angle between two adjacent ball limiting grooves; or a plurality of limiting balls are provided on the outer side wall of the bushing corresponding to the position of the bolt tightener runner, the bolt tightener runner The through hole A of the core is provided with at least one ball limiting groove matching with the limiting ball, and the included angle between two adjacent bolt tightener storage through holes is the angle between the adjacent two limiting balls Integer multiple. Through the function of the limit ball, the axial fixation and the circumferential fixation between the sleeve and the bolt tightener runner can be ensured, and the rotation between the bolt tightener runner and the bush can also be facilitated.

A further improved solution of the present invention is that the limit balls are respectively provided in radial grooves provided on the outer wall of the sleeve in the radial direction, and the diameter of the radial groove is equal to the diameter of the limit balls, and the radial grooves There is a pre-compressed spring B between the bottom of the groove and the limit ball, and the notch in the radial groove fixes the limit stop ring, the outer end surface of the limit ring is flush with the outer side wall at the corresponding position of the sleeve, The inner diameter of the limit ring is smaller than the diameter of the limit ball. Through the structure of the radial groove, the connection and separation of the limiting ball and the ball limiting groove are realized.

A further improvement of the present invention is that the surface of the runner of the bolt tightener is provided with a non-slip pattern B.

A further improvement solution of the present invention is that the vertical plate is provided with a shaft hole A and a shaft hole B corresponding to the transmission shaft and the bolt tightener ferrule respectively, and the front end of the transmission shaft is located at the rear side of the vertical plate and is fixedly connected Transmission gear A, the rear end of the bolt tightener ferrule extends backward through the vertical hole through the shaft hole B, and a transmission gear B matching the transmission gear A is fixedly connected, and the transmission gear A meshes with the transmission gear B . Through the role of transmission gear A and transmission gear B, the transmission connection between the transmission shaft and the bolt tightener ferrule is realized.

A further improvement of the present invention is that the diameter of the transmission gear B is greater than or equal to the diameter of the transmission gear A. The torque of the bolt tightener unit in the bolt tightener ferrule is further increased.

A further improvement solution of the present invention is that the front end of the bolt tightener ferrule extends forward through the shaft hole B to the vertical plate, and the bolt tightener ferrule is provided with a limit stop ring on the outer side wall of the front end of the vertical plate. The axial limit of the clamping sleeve of the bolt tightener is realized.

A further improvement of the present invention is that the bottom end of the vertical plate is provided with a connecting block backward, and the connecting block is provided with a buckle device for fixedly connecting with the connecting plate. Through the role of the connecting block, it is ensured that the vertical plate is easy to disassemble and assemble

A further improved solution of the present invention is that a vertical rib is provided on the front end surface of the vertical plate, and the vertical rib connects the shaft hole B and the shaft hole A, and the shaft hole A and the connecting block, respectively. Through the function of the standing rib, the strength of the standing board is improved, and the supporting force of the standing board is ensured.

A further improvement of the present invention is that the side wall of the spindle housing is provided with a positive and negative switch of the motor. Through the function of the positive and negative reversing switch, the bolts in different screw directions can be tightened and loosened.

A further improved solution of the present invention is that the side wall of the spindle housing is provided with a battery power indicator lamp. Through the function of the battery power display lamp, it is possible to know the power status of the order, so that the battery can be replaced or charged in time.

A further improved solution of the present invention is that a side wall of the spindle housing and a position corresponding to the motor are provided with a ventilation area, and a plurality of ventilation holes are evenly distributed in the ventilation area. Through the function of the ventilation holes, the motor is prevented from being burned due to overheating.

The beneficial effects of the present invention are:

The quick replacement gun bolt tightener of the present invention is realized by placing a set of bolt tightener units in the bolt tightener runner and replacing the bolt tightener unit by directly pushing and pulling the push-pull cover. The quick replacement of the bolt tightener unit improves the operation efficiency.

BRIEF DESCRIPTION:

FIG. 1 is a perspective schematic view of the present invention.

2 is an enlarged schematic cross-sectional view of a front view of a transmission device of a motor.

FIG. 3 is an enlarged schematic view of the connection between the bolt tightener runner and the casing and the bolt tightener ferrule.

4 is an enlarged schematic cross-sectional view of a bottom view of the connection between the bolt tightener runner and the casing and the bolt tightener ferrule.

5 is an enlarged schematic perspective view of the sleeve.

Fig. 6 is an enlarged schematic perspective view of the oblique downward view of the push-pull device of the bolt tightener.

7 is an enlarged schematic perspective view of the oblique upward view of the push-pull device of the bolt tightener.

Fig. 8 is an enlarged schematic view of a push-pull tube.

9 is an enlarged schematic view of the push-pull rod.

10 is an enlarged schematic partial cross-sectional view of the push-pull device bolt tightener when the push-pull device pushes the bolt tightener to the bolt tightener ferrule.

Fig. 11 is an enlarged schematic view of the vertical plate.

Fig. 12 is an enlarged schematic front view of the bolt tightener unit.

detailed description:

It can be seen with reference to FIGS. 1-12 that the present invention includes a spindle housing 1 in which a motor 3 is fixed. The motor output shaft 19 of the motor 3 extends forward and passes through the transmission shaft 4 and the front end of the spindle housing 1 The bolt tightener ferrule 7 is drivingly connected, and the bolt tightener ferrule 7 is rotatably connected to the vertical plate 48, and the vertical plate 48 is fixedly connected to the front end of the spindle housing 1 through the connecting plate 9, and the spindle shell 1 is connected to the vertical A bolt tightener runner 6 is provided between the plates 48, and the shaft through hole A62 provided in the bolt tightener runner 6 is coaxially sleeved on the transmission shaft 4 and is rotationally connected with the transmission shaft 4, the bolt A plurality of bolt tightener storage through holes 15 are evenly distributed on the end surface of the tightener runner 6 with its axis as the center, and a bolt tightener unit 16 is placed in each of the bolt tightener storage through holes 15. The shaft center of the bolt tightener ferrule 7 is located on the cylindrical surface surrounded by the shaft center of each bolt tightener storage through hole 15, and the bolt tightener runner 6 is provided with bolts in the spindle housing 1 on the rear side A tightener push-pull device, the bolt tightener push-pull device is coaxial with the bolt tightener ferrule 7 Position, push the bolt tightener unit 16 from the bolt tightener storage through hole 15 corresponding to the position of the bolt tightener ferrule 7 into the bolt tightener ferrule 7, or push the bolt tightener unit 16 from the bolt tightener ferrule 7 Pull back the bolt tightener storage through hole 15 corresponding to the position of the bolt tightener ferrule 7; a handle 2 is fixed on the back side of the bottom of the spindle housing 1, a battery is fixed in the handle 2 and the spindle housing At the bottom of 1 and in front of the handle 2 is a button 8 for controlling the rotation of the motor.

The motor output shaft 19 is fixed with a sun gear A20. A plurality of planet gears A21 are meshed and transmitted around the sun gear A20. The planet gears A21 are respectively fixed to one end of a rotating shaft A26, and the other end of the rotating shaft A26 is fixed Planetary gear B22, the planetary gears B22 are all meshed with the sun gear B23, the rotating shaft B24 of the sun gear B23 is coaxial with the motor output shaft 19, and the end of the rotating shaft B24 away from the motor 3 is coaxial with the drive shaft 4 connection.

The rotating shaft A26 is rotatably connected to the planetary carrier 27 respectively, and the planetary carrier 27 is fixedly connected to the inner wall of the spindle housing 2.

The rotating shaft A26 and the rotating shaft B24 are rotatably connected to the planet carrier 27 through bearings, respectively.

The diameter of the sun gear A20 is smaller than the diameter of the planet gear A21, the diameter of the planet gear A21 is larger than the diameter of the planet gear B22, and the diameter of the planet gear B22 is smaller than the diameter of the sun gear B23.

The transmission shaft 4 is coaxially connected to the rotating shaft B24 through a coupling 25.

The push-pull device of the bolt tightener includes a sleeve 5 sleeved on the transmission shaft 4 and a push-pull tube 10 located on the upper side of the transmission shaft 4 and reciprocating along the axis of the transmission shaft 4. The sleeve 5 and the transmission The shaft 4 is rotatably connected, and the front and rear ends of the sleeve 5 are axially limited by the vertical plate 48 and the main shaft shell 1 and the transmission shaft 4; the push-pull tube 10 is movably connected to the sleeve 5 and the transmission shaft 4 is connected to the sleeve The axial through hole B17 provided in the tube 5 is connected in rotation.

A plurality of axially arranged strip grooves 43 are evenly distributed on the surface of the sleeve 5, and adjacent two strip grooves 43 are respectively communicated through a connection groove 46, the connection groove 46 is located behind the strip groove 43 End, and the connection groove 46 is inclined in the same direction; the bottom of the push-pull tube 10, a slider 29 is fixed at the rear end position, the slider 29 moves along the bar groove 43 and the connection groove 46, The outer diameter of the push-pull tube 10 matches the inner diameter of the bolt tightener storage through hole 15; the number of the strip grooves 43 is equal to the number of bolt tightener storage through holes 15 of the bolt tightener runner 6.

The strip groove 43 includes a shallow groove 44 and a deep groove 45. The shallow groove 44 is located on the rear side of the deep groove 45. The forward extending surface of the rear groove wall of the connection groove 43 is corresponding to the corresponding groove 43. The vertical surface of the step formed at the junction of the shallow groove 44 and the deep groove 45 is coincident. The groove bottom of the connection groove 46 is inclined upward from front to back along the direction of the connection groove 46, and the depth of the groove bottom at the front end of the connection groove 46 is greater than or equal to The groove depth of the deep groove 45 and the groove bottom depth at the rear end of the connecting groove 46 are less than or equal to the groove depth of the shallow groove 44.

The front end nozzle of the push-pull tube 10 is open, and a notch A31 is provided on the upper side of the rear end of the side wall of the push-pull tube 10, and an operation stand 30 is provided upward on the lower part of the rear end side wall of the push-pull tube 10. 10 is provided with a push-pull rod 11, the outer wall of the push-pull rod 11 matches the inner wall of the push-pull tube 10, the rear end of the push-pull rod 11 is located in the gap A31, and the front end of the push-pull rod 11 extends forward from the push-pull tube The front end nozzle of 10, the front end of the push-pull rod 11 is provided with a stop baffle 33 matching the outer diameter of the push-pull tube 10, the upper surface of the rear end of the push-pull rod 11 is fixed with a protrusion A34 upward, and the push-pull rod 11 A pull hook 40 is provided on the front end surface of the push rod 11.

The pull hook 40 is fixed to the front end of the axial long rod 38. The rear end of the axial long rod 38 is provided with a protrusion B39 on the side where the pull hook 40 is located. The push-pull rod 11 is provided corresponding to the axial long rod 38. An axial slot 42 whose front end extends to the front end of the push-pull rod 11 and extends toward a side wall of the push-pull rod 38 corresponding to the side of the hook 40 to form a notch B36, the axial slot 42 The rear end extends to a position within the range of the notch A31, and extends toward the side wall of the push-pull rod 38 corresponding to the side of the bump B39 to form a strip-shaped through hole A37, and the bump B39 is located in the strip-shaped through hole A37.

The end of the axial long rod 38 facing away from the strip-shaped through hole A37 is provided with a convex fulcrum 72, and the convex fulcrum 72 and the axial slot 42 face away from the groove wall on the side of the strip-shaped through hole A37 The contact makes the axially long rod 38 form a lever structure; in the free state, the axially long rod 38 corresponds to one end of the convex block B39 is raised, and the convex block B39 extends outwardly from the bar-shaped through hole A37, the pull hook 40 The distance from the axis of the push-pull rod 11 is less than or equal to the radius of the stop baffle 33.

The side wall surface of the push-pull tube 10 is provided with a strip-shaped through hole B32 communicating with the inside and the outside of the push-pull tube 10, and the top of the outer side wall of the push-pull rod 11 is provided with a protrusion between the protrusion A34 and the limit baffle 33 Starting pillar 35, the diameter of the convex pillar 35 matches the width of the strip-shaped through hole B32, and moves along the strip-shaped through hole B32, the strip-shaped through hole B32 pushes and pulls the tube in the direction from front to back The side of 10 is inclined; when the convex post 35 moves to the forefront of the strip-shaped through hole B32, the bump A34 is located above the push-pull rod 11, when the convex post 35 moves to the rear end of the strip-shaped through hole B32 , The strip-shaped through-hole A37 is located above the push-pull rod 11, and the protrusion A34 is located on the side of the push-pull rod 11; the convex column 35 is within the range of movement along the strip-shaped through-hole B32, and the protrusion in the strip-shaped through-hole A37 The block B39 is always located in the notch A31 and protrudes outward from the bar-shaped through hole A37. The distance between the hook 40 and the axis of the push-pull rod 11 is less than or equal to the radius of the limiting baffle 33.

When the push-pull tube 10 and the push-pull rod 11 move backward along the bar groove 43 to the maximum stroke, the convex column 35 is located at the foremost end of the bar-shaped through hole B32, and the protrusion B39 is located on the side of the push-pull rod 11, The inner wall of the spindle housing 1 is provided with a bump C at a position corresponding to the bump B39 (the bump C is not shown in the drawings in the specification), and the bump B39 in the strip-shaped through hole A37 is blocked by the bump C It is located in the push-pull rod 11, and at this time, the distance between the axial long rod 38 and the axis of the pull hook 40 and the push-pull rod 11 is greater than the radius of the limiting baffle 33.

When the bump A34 is located on the side of the push-pull rod 11, the rear end surface of the bump A34 and the inner wall of the spindle housing 1 corresponding to the push-pull rod stopper provided on the side of the bump A34 (in the drawings The front end face of the push-pull rod limiter is not shown.

The push-pull rod limit block is located in the limit block groove, and a spring A is provided between the push-pull rod limit block and the groove bottom of the limit block groove, and the push-pull rod limit block extends along the limit block groove The direction perpendicular to the inner wall of the spindle housing 1 reciprocates; when the spring A is in a natural state, the push-pull rod limit block extends beyond the limit block groove, and the push-pull rod limit block extends beyond the inner wall of the spindle shell 1 by less than The compression deformation distance of the spring A (in the drawings of the specification, the push-pull rod limit block, the spring A, and the limit block groove are not shown).

The rear end surface of the portion of the push-pull rod limiting block that protrudes from the inner wall of the spindle housing 1 is along a slope inclined outward from front to back.

The top of the spindle housing 1 is provided with a push-pull cover 12, the front end of the bottom of the push-pull cover 12 is fixedly connected to the operation stand 30 of the push-pull tube 10, and the front end of the top surface of the spindle housing 1 is fixed with a push-pull cover limiting block A56 A push-pull cover limit block B57 is fixed to the rear end of the top surface of the spindle housing, and the push-pull cover 12 moves within a range between the push-pull cover limit block A56 and the push-pull cover limit block B57.

The front end of the bottom of the sliding cover 12 is fixedly connected to the operation stand 30 of the sliding tube 10 by bolts.

When the push-pull cover 12 moves forward to the maximum stroke, the front end surface of the push-pull rod 10 just clamps the bolt tightener unit 16 and the bolt tightener ferrule 7; when the push-pull cover 12 moves backward to the maximum stroke The front end surface of the push-pull rod 10 is located on the rear side of the bolt tightener runner 6.

The two sides of the sliding cover 12 are provided with flanges downward, and the two side walls of the main shaft shell 1 and the flanges of the sliding cover 12 are provided with slide grooves 54.

The outer surface of the sliding cover 12 is provided with a non-slip pattern A58.

The top of the spindle housing 1 and the movable range corresponding to the protrusion A34 are provided with notches 55 communicating with the inside and outside of the spindle housing 1. The notches 55 extend forward to the front end of the spindle housing 1.

The push-pull cap limiting block A56 is provided at the front end of the slot 55 and connects the groove walls on both sides of the slot 55. The bottom of the push-pull cap limiting block A56 is higher than the top height of the convex block A34.

The bolt tightener unit 16 includes a bolt tightener head 63, a bolt tightener main rod 66, a rod body clamping part 67, and a hook pull ring groove 70 in order from front to back. The inner wall of the bolt tightener ferrule 7 is On a conical arc surface, the rod clamping portion 67 is engaged with the inner wall of the bolt tightener ferrule 7 to an interference fit, and the hook and pull ring groove 70 is matched with the hook 40.

A plurality of axial ribs 68 are provided at the front end of the rod body clamping portion 67 in the axial direction, and the axial ribs 68 are evenly distributed on the surface of the main rod 66 of the bolt tightener.

The front end surface of the axial rib 68 is provided with a transition slope 69.

An annular transition slope A is provided between the bolt tightener main rod 66 and the bolt tightener head 63.

The front groove wall of the hook-pull groove 70 is an annular transition slope B.

The rear side of the hook pull ring groove 70 is a hook pull baffle 71, and the diameter of the hook pull baffle 71 is less than or equal to the diameter of the rod clamping portion 67 and greater than the diameter of the groove bottom of the hook pull ring groove 70.

The bolt tightener runner 6 is sleeved on the sleeve 5 through the axial through hole A62, and at least one limit ball is provided on the outer side wall of the sleeve 5 corresponding to the position of the bolt tightener runner 6 47. A plurality of ball limiting grooves 64 matching the limiting balls 47 are provided in the axial through hole A62 of the bolt tightener runner 6 and the included angle between two adjacent bolt tighteners storing through holes 15 It is an integer multiple of the angle between two adjacent ball limiting grooves 64; or a plurality of limiting balls 47 are provided on the outer side wall of the sleeve 5 corresponding to the position of the bolt tightener runner 6; The shaft through hole A62 of the bolt tightener runner 6 is provided with at least one ball limiting groove 64 matching with the limiting ball 47, and the included angle between two adjacent bolt tightener storage through holes 15 is the adjacent two An integral multiple of the angle between the limit balls 47.

The limiting balls 47 are respectively arranged in radial grooves provided on the outer side wall of the sleeve 5 in the radial direction. The diameter of the radial grooves is equal to the diameter of the limiting balls 47. A pre-compressed spring B is provided between the positioning balls 47, and the notch in the radial groove fixes the limiting ring, the end surface outside the limiting ring is flush with the outer side wall at the corresponding position of the sleeve 5, and the limiting ring The inner diameter of is smaller than the diameter of the limit ball 47.

The surface of the bolt tightener runner 6 is provided with a non-slip pattern B65.

The vertical plate 48 is provided with a shaft hole A50 and a shaft hole B51 corresponding to the transmission shaft 4 and the bolt tightener ferrule 7, respectively. The front end of the transmission shaft 4 and the rear side of the vertical plate 48 are circumferentially fixedly connected with a transmission gear A13 The rear end of the bolt tightener ferrule 7 extends backward through the shaft hole B51 to the vertical plate 48, and a transmission gear B14 matching the transmission gear A13 is fixedly connected, and the transmission gear A13 meshes with the transmission gear B14 for transmission.

The diameter of the transmission gear B14 is greater than or equal to the diameter of the transmission gear A13.

The front end of the bolt tightener ferrule 7 protrudes forward through the shaft hole B51 to the vertical plate 48, and the bolt tightener ferrule 7 is located on the outer side wall of the front end of the vertical plate 48 and is provided with a limit stop ring 72.

The bottom end of the vertical plate 48 is provided with a connecting block 49 backwards, and the connecting block 49 is provided with a locking device 53 for fixedly connecting with the connecting plate 9.

A standing rib 52 is provided on the front end surface of the standing plate 48, and the standing rib 52 connects the shaft hole B51 and the shaft hole A50, and the shaft hole A50 and the connecting block 49, respectively.

The side wall of the spindle housing 1 is provided with a forward and reverse switch 61 of the motor 3.

A battery power indicator 60 is provided on the side wall of the spindle housing 1.

The side wall of the spindle housing 1 and the position corresponding to the motor 3 are provided with a ventilation area 59, and a plurality of ventilation holes are evenly distributed in the ventilation area.

When using the present invention, first select the bolt tightener runner 6 containing the bolt tightener unit 16 to be used, and ensure that the sliding cover 12 is located at the maximum stroke at the rear end.

Then put 6 sets of bolt tightener runners on the sleeve 5, and make the limit ball 47 and the ball limit groove 64 engage the limit, and then fix the vertical plate 48 and the connecting plate 9, while ensuring the transmission shaft 4 Rotating connection with shaft hole A50.

By turning the bolt tightener runner 6, the bolt tightener storage through-hole 15 when only the bolt tightener unit 16 is used is rotated to a position corresponding to the bolt tightener ferrule 7.

Then, by pushing the push-pull cover 12 forward, the push-pull tube 10 and the push-pull rod 11 are pushed forward along the bar-shaped groove 43 of the sleeve 5; when the stop baffle 33 of the push-pull rod 11 and the required bolt tightener When the hook-pull baffle 71 of the unit 16 comes into contact, the push-pull rod 11 is temporarily blocked, and the push-pull tube 10 continues to advance forward under the action of the push-pull cover 12; thus the push-pull rod 11 moves backward relative to the push-pull tube 10 , So that the convex column 35 of the push-pull rod 11 moves backward along the strip-shaped through hole B32 of the push-pull tube 10, so that the push-pull rod 11 rotates relative to the push-pull tube 10 while moving backward, when the push-pull rod 11 When the convex column 35 moves to the rear end of the strip-shaped through hole B32, the projection A34 of the push-pull rod 11 rotates to the side of the push-pull rod 11, and the hook 40 of the push-pull rod 11 extends into the hook of the bolt tightener unit 16 Ring groove 70.

Then, under the continued push of the push-pull cover 12, the bolt tightener unit 16 is moved forward by the push-pull tube 10 and the push-pull rod 11, and the bolt tightener storage through-hole 15 is extended until the rod body clamping portion 67 of the bolt tightener unit 16 Tighten with the bolt tightener ferrule 7.

When the rod clamping portion 67 of the bolt tightener unit 16 is tightened with the bolt tightener sleeve 7, the hook pull ring groove 70 of the bolt tightener is located between the bolt tightener runner 6 and the bolt tightener sleeve 7 In addition, the convex block A34 of the push-pull rod 11 has just passed the push-pull rod limiting block, and the rear end surface of the convex block A34 contacts and resists the front end surface of the push-pull rod limiting block.

Finally, the thread direction of the bolt is screwed according to the need, the rotation direction of the motor 3 is selected by the forward and reverse switch 61, the bolt tightener unit 16 is aligned with the bolt, and then the start button 8 can tighten or loosen the bolt.

When it is necessary to use another bolt tightener, the current bolt tightener unit 16 needs to be pulled back into the bolt tightener storage through hole 15 of the bolt tightener runner 6 first. The operation flow is as follows:

By pulling the push-pull cover 12 backward, the push-pull tube 10 is driven backward along the strip groove 43 of the sleeve; at this time, the hook 11 of the push-pull rod 11 hooks the hook-pull groove 70 of the bolt tightener unit 16, and The rod clamping portion 67 of the bolt tightener unit 16 and the bolt tightener ferrule 7 are tightened, so that the push-pull rod 11 temporarily fails to move backward, so the push-pull rod 11 at this time moves forward relative to the push-pull tube 10 , So that the convex column 35 of the push-pull rod 11 moves forward along the strip-shaped through hole B32 of the push-pull tube 10, so that the push-pull rod 11 rotates relative to the push-pull tube 10 while moving forward, along with the push-pull rod 11 Rotation, the protrusion A is separated from the push-pull rod limit block; when the convex column 35 of the push-pull rod 11 moves to the front end of the bar-shaped through hole B32, the protrusion A of the push-pull rod 11 rotates above the push-pull rod 11 , The projection B39 rotates to the side of the push-pull rod 11.

Then, under the continued pulling of the push-pull cover 12, the bolt tightener unit 16 is driven by the push-pull tube 10 and the push-pull rod 11 to move backward to overcome the friction force with the bolt tightener ferrule 7 and enter the bolt tightener storage through-hole 15.

When the slider 29 of the push-pull tube 10 moves backward along the deep groove 45 of the strip groove 43 to the connection of the deep groove 45 and the shallow groove 44, the slider 29 is formed by the connection of the shallow groove 44 and the deep groove 45 The elevation of the step is blocked; under the continued pulling of the push-pull cover 12, the slider 29 of the push-pull tube 10 continues to move backward relative to the sleeve 5, thereby moving backward along the connecting groove 46 to another adjacent to the current bar groove 43 In a shallow groove 44 of a strip groove 43.

When the slider 29 of the push-pull tube 10 just leaves the deep groove 45 and enters the transition groove 46, the bolt tightener of the bolt tightener unit 16 just extends backward in the hook pull ring groove 70 of the bolt tightener runner 6 Hole 15; When the slider 29 of the push-pull tube 10 is at the position of the transition groove 46, the bump B39 of the push-pull rod 11 is in contact with the bump C provided on the inner wall of the spindle housing 1, and the bump B39 in the strip-shaped through hole A37 Blocked by the projection C and located in the push-pull rod 11, the axial long rod 38 is located at a distance between the axis of the hook 40 and the push-pull rod 11 greater than the radius of the stop baffle 33, and the hook 40 is separated from the hook ring groove 70 , And the sleeve 5 drives the bolt tightener runner 6 to rotate.

When the slider 29 of the push-pull tube 10 is moved backward into the shallow groove 44 of the other adjacent strip groove 43 under the action of the push-pull cover 12, the sleeve 5 drives the bolt tightener runner 6 to rotate to The bolt tightener ferrule 7 is coaxially aligned with another bolt tightener storage through hole 15 adjacent to the bolt tightener storage through hole 15 before the bolt tightener runner 6.

If the bolt tightener unit 16 in the adjacent bolt tightener storage through-hole 15 is the bolt tightener unit 16 that needs to be used, the previous operation method using the bolt tightener unit 16 can be directly repeated.

If the required bolt tightener unit 16 is still in the bolt tightener runner 6, but not the bolt tightener unit 16 in the adjacent bolt tightener storage through-hole 15, the above-mentioned push-out bolt tightening can be repeated Unit 16 and the method of pulling back the bolt tightener unit 16 until the required bolt tightener unit 16 is pushed out; it is also possible to directly rotate the bolt tightener runner 6 by hand until the bolts with the required bolt tightener unit 16 are stored The tightener storage through-hole 15 is pulled to correspond to the coaxial center of the bolt tightener ferrule 7, and then the operation method using the bolt tightener unit 16 before is repeated.

If the required bolt tightener unit 16 is not in the bolt tightener runner 6, the vertical plate 48 needs to be removed, and then the bolt tightener runner 6 on the sleeve 5 is removed, and then select the The bolt tightener runner 6 of the bolt tightener unit 16 repeats the previous operation using the operation method of the present invention.

Claims

The quick-change gun bolt tightener is characterized by comprising a spindle housing (1), a motor (3) is fixed in the spindle housing (1), and a motor output shaft (19) of the motor (3) is forward It extends and is connected to the bolt tightener ferrule (7) at the front end of the main shaft shell (1) through the drive shaft (4). The bolt tightener ferrule (7) is rotatably connected to the vertical plate (48). The vertical plate (48) is fixedly connected to the front end of the main shaft shell (1) through a connecting plate (9). A bolt tightener runner (6) is provided between the main shaft shell (1) and the vertical plate (48). The shaft through hole A (62) provided on the bolt tightener runner (6) is coaxially sleeved on the transmission shaft (4) and is rotatably connected with the transmission shaft (4). The bolt tightener runner (6) ) On the end face, with its axis as the center, a plurality of bolt tightener storage through holes (15) are evenly distributed, and a bolt tightener unit (16) is placed in the bolt tightener storage through holes (15), The shaft center of the bolt tightener ferrule (7) is located on the cylindrical surface surrounded by the shaft center of each bolt tightener storage through hole (15), and the rear side of the bolt tightener runner (6) is located The spindle housing (1) is provided with a bolt tightener push-pull assembly The bolt tightener push-pull device is arranged coaxially with the bolt tightener ferrule (7), and the bolt tightener unit (16) is stored from the bolt tightener corresponding to the position of the bolt tightener ferrule (7) through hole (15) Push into the bolt tightener ferrule (7), or pull the bolt tightener unit (16) from the bolt tightener ferrule (7) back to the bolt tightener corresponding to the position of the bolt tightener ferrule (7) Stored in the through hole (15); a handle (2) is fixed on the rear side of the bottom of the spindle housing (1), a battery is fixed in the handle (2), and the bottom of the spindle housing (1) is located A button (8) for controlling the rotation of the motor is provided in front of the handle (2).
The quick-change gun bolt tightener according to claim 1, characterized in that the push-pull device of the bolt tightener comprises a sleeve (5) sleeved on the transmission shaft (4), and is located on the transmission shaft (4) ) On the upper side, a push-pull tube (10) that reciprocates along the axis of the transmission shaft (4), the sleeve (5) is rotatably connected to the transmission shaft (4), and the front and rear ends of the sleeve (5) are respectively Through the vertical plate (48) and the main shaft shell (1) and the axial limit of the drive shaft (4); the push-pull tube (10) is movably connected with the sleeve (5), the drive shaft (4) and the sleeve ( 5) The set shaft through hole B (17) is connected by rotation.
The quick-change gun bolt tightener according to claim 2, characterized in that: the surface of the sleeve (5) is evenly distributed with a plurality of axially arranged strip grooves (43), two adjacent strips The grooves (43) communicate with each other through a connection groove (46), the connection groove (46) is located at the rear end of the strip groove (43), and the connection groove (46) is inclined along the same direction; At the bottom of the push-pull tube (10), a slider (29) is fixed at the rear end position, the slider (29) moves along the strip groove (43) and the connecting groove (46), the push-pull tube (10) ) Matches the outer diameter of the bolt tightener storage through hole (15); the number of the strip grooves (43) is equal to the number of bolt tightener storage through holes (15) of the bolt tightener runner (6).
The quick-change gun bolt tightener according to claim 3, wherein the bar-shaped groove (43) includes a shallow groove (44) and a deep groove (45), the shallow groove (44) is located in the deep The rear side of the groove (45), a step formed at the connection between the forward extension surface of the rear side groove wall of the connection groove (43) and the shallow groove (44) and the deep groove (45) of the corresponding strip groove (43) The elevations are coincident, the groove bottom of the connection groove (46) is inclined upward from front to back along the direction of the connection groove (46), and the depth of the groove bottom at the front end of the connection groove (46) is greater than or equal to that of the deep groove (45) The depth of the groove and the bottom of the groove at the rear end of the connecting groove (46) are less than or equal to the depth of the shallow groove (44).
The quick-change gun bolt tightener according to claim 3, wherein the front end of the push-pull tube (10) is open, and a notch is provided on the upper side of the rear end of the side wall of the push-pull tube (10) A (31), and the lower part of the rear end side wall of the push-pull tube (10) is provided with an operating vertical plate (30) upward, and the push-pull tube (10) is provided with a push-pull rod (11), the push-pull rod (11) ) Matches the inner wall of the push-pull tube (10), the rear end of the push-pull rod (11) is located in the gap A (31), and the front end of the push-pull rod (11) extends forward of the push-pull tube (10) The front end nozzle, the front end of the push-pull rod (11) is provided with a stop baffle (33) matching the outer diameter of the push-pull tube (10), and the upper end of the rear end surface of the push-pull rod (11) is fixed with a bump upward A (34), and the front end surface of the push-pull rod (11) is provided with a hook (40) on the side of the push-pull rod (11).
The quick-change gun bolt tightener according to claim 5, characterized in that the pull hook (40) is fixed to the front end of the axial long rod (38), and the rear end of the axial long rod (38) . A bump B (39) is provided on the side where the pull hook (40) is located. The push-pull rod (11) is provided with an axial slot (42) corresponding to the axial long rod (38). The axial slot ( 42) The front end extends to the front end of the push-pull rod (11), and extends to the side wall of the push-pull rod (38) corresponding to the side of the hook (40), forming a notch B (36), the axial slot (42) The rear end extends to a position within the range of the notch A (31), and extends to the side wall of the push-pull rod (38) corresponding to the side of the bump B (39), forming a strip-shaped through hole A (37), convex The block B (39) is located in the strip-shaped through hole A (37).
The quick-change gun bolt tightener according to claim 5, characterized in that: the top of the spindle housing (1) is provided with a push-pull cover (12), the bottom front end of the push-pull cover (12) and the push-pull tube (10) The operation vertical plate (30) is fixedly connected, the front end of the top surface of the spindle housing (1) is fixed with a push-pull cover limiting block A (56), and the rear end of the top surface of the spindle housing is fixed with a push-pull cover limit Position block B (57), the sliding cover (12) moves within a range between the sliding cover limit block A (56) and the sliding cover limit block B (57).
The quick-change gun bolt tightener according to claim 5, characterized in that the bolt tightener unit (16) includes a bolt tightener head (63) and a bolt tightener main rod in order from front to back 66), the rod clamping part (67) and the hook ring groove (70), the inner wall of the bolt tightener clamping sleeve (7) is a conical arc surface, the rod body clamping part (67) is clamped with the bolt tightener The inner wall of the sleeve (7) is snap-fitted to an interference fit, and the hook-pull ring groove (70) matches the hook (40).
The quick-change gun bolt tightener according to claim 3, characterized in that the bolt tightener runner (6) is sleeved on the sleeve (5) through the axial through hole A (62), and At least one limiting ball (47) is provided on the outer side wall of the sleeve (5) corresponding to the position of the bolt tightener runner (6), and the axial through hole of the bolt tightener runner (6) A (62) is provided with a plurality of ball limiting grooves (64) matching with the limiting balls (47), and the angle between the adjacent two bolt tightener storage through holes (15) is the adjacent two balls An integer multiple of the included angle between the limit grooves (64); or a plurality of limit balls (47) on the outer side wall of the sleeve (5) corresponding to the position of the bolt tightener runner (6), The shaft through hole A (62) of the bolt tightener runner (6) is provided with at least one ball limiting groove (64) matched with the limiting ball (47), and two adjacent bolt tighteners are stored to pass through The angle between the holes (15) is an integer multiple of the angle between the two adjacent limiting balls (47).
The quick-change gun bolt tightener according to claim 1, characterized in that the vertical plate (48) is provided with a shaft hole A (corresponding to the transmission shaft (4) and the bolt tightener ferrule (7) respectively 50) and the shaft hole B (51), the front end of the transmission shaft (4) and the rear side of the vertical plate (48) are circumferentially fixedly connected with a transmission gear A (13), and the bolt tightener ferrule (7) The rear end of the shaft extends backward through the shaft hole B (51) to the vertical plate (48), and is fixedly connected with a transmission gear B (14) matching the transmission gear A (13), the transmission gear A (13) and the transmission Gear B (14) meshes with the drive.