CN214722094U - Bolt tightening transition assembly and bolt fastening device - Google Patents

Abstract

The utility model discloses a bolt tightening transition subassembly and bolt-up device, this bolt tightening transition subassembly includes: the pneumatic wrench comprises a rotating shaft and a clutch, wherein one end of the rotating shaft is provided with a first inserting hole for inserting the output end of the pneumatic wrench, and the other end of the rotating shaft is provided with a connecting hole for placing a nut; the clutch is sleeved on the rotating shaft and is connected with the torque wrench, and the clutch has an idle state and a locking state on the rotating shaft; in an idle state, the clutch cannot transmit the rotation of the rotating shaft to the torque wrench; in the locking state, the torque wrench drives the clutch and the rotating shaft to rotate by taking the central shaft of the rotating shaft as the rotating shaft. This bolt tightening transition subassembly is in the use, and the connecting hole is established outside the bolt all the time, and arbitrary spanner all can the isolated operation, and can not influence each other, has improved the convenience when bolt tightening operation.

Description

Bolt tightening transition assembly and bolt fastening device

Technical Field

The utility model belongs to the technical field of appurtenance technique and specifically relates to a bolt tightening transition subassembly and bolt-up device are related to.

Background

In machine manufacturing, a bolt is an indispensable part, and a wrench is usually required to disassemble and assemble the bolt. In the high-precision assembly field, in order to guarantee the moment uniformity of a plurality of bolt installations, often adopt torque wrench to tighten the bolt. When the bolt is longer or the number is more, usually, firstly, the bolt is screwed to the fitting state by using a pneumatic wrench, and then, the torque wrench is replaced to fix the bolt in a fixed torque manner. However, in this process, an operator needs to repeatedly switch and search for different wrenches to fix a plurality of bolts, and the switching and searching processes are prone to cause waste of working hours. To save time, it is now common to combine wrenches of different purposes directly together. However, when one of the wrenches is used, the rest wrenches of different types move along with the wrench, so that the required operation space is large, and in addition, the bolt tightening operation is influenced, so that the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a bolt tightening transition assembly that improves the convenience in bolt tightening work, in view of the above-described problems.

A bolt-up transition assembly comprising: the pneumatic wrench comprises a rotating shaft, a first connecting hole is formed in one end of the rotating shaft and used for being inserted into an output end of a pneumatic wrench, and a connecting hole is formed in the other end of the rotating shaft and used for placing a nut; the clutch is sleeved on the rotating shaft and connected with the torque wrench, and the clutch has an idle state and a locking state on the rotating shaft; in an idle state, the clutch cannot transmit the rotation of the rotating shaft to the torque wrench; and in a locking state, the torque wrench drives the clutch and the rotating shaft to rotate by taking the central shaft of the rotating shaft as a rotating shaft.

In the structure of the bolt tightening transition assembly, one end of the rotating shaft is provided with a first inserting hole, the first inserting hole is used for inserting the output end of the pneumatic wrench, the other end of the rotating shaft is provided with a connecting hole, and the connecting hole is used for placing a nut. The clutch is sleeved on the rotating shaft and connected with the torque wrench, and the clutch is in an idle state and a locking state on the rotating shaft. Because the clutch does not transmit the rotation of the rotating shaft to the torque wrench when the clutch is in an idle state. Therefore, after the pneumatic wrench outputs power, the rotating shaft can rotate, but the clutch and the torque wrench are both kept still, and at the moment, the nut in the connecting hole on the other end of the rotating shaft is screwed on the screw rod so as to screw the nut to a joint state. Because when the clutch is in locking state, the torque wrench can drive the clutch with the axis of rotation uses the center pin of axis of rotation rotates as the pivot, so, can use the torque wrench to decide the moment of torsion to rotate the nut to with deciding moment of torsion locking bolt. This bolt tightening transition subassembly is in the use, the connecting hole is established outside the bolt all the time, and arbitrary spanner all can the isolated operation, and can not influence each other, has improved the convenience when bolt tightening operation.

The technical solution is further explained below:

in one of them embodiment, the clutch includes one-way rotating assembly, one-way rotating assembly cover is located in the axis of rotation, one-way rotating assembly with torque wrench connects, when the axis of rotation used self center pin to rotate as the pivot along first direction of rotation, one-way rotating assembly for the axis of rotation remains motionless, one-way rotating assembly with the center pin of axis of rotation is the pivot along during first direction of rotation, one-way rotating assembly can drive the axis of rotation rotates.

In one embodiment, the unidirectional rotation assembly comprises a collar seat, a ratchet wheel and a pawl, the ratchet wheel is sleeved outside the rotation shaft, one end of the pawl is abutted to the gear teeth of the ratchet wheel, when the ratchet wheel rotates along the first direction, the ratchet wheel can rotate relative to the pawl by taking the central shaft of the rotation shaft as a rotation shaft, when the ratchet wheel rotates along deviating from the first direction, the pawl is abutted between two adjacent gear teeth of the ratchet wheel so as to block the ratchet wheel from rotating along deviating from the first direction, one end of the pawl far away from the ratchet wheel is connected with the collar seat, the collar seat is sleeved outside the rotation shaft and can rotate relative to the rotation shaft, and a torque wrench is connected with the collar seat.

In one embodiment, the rotating shaft is in interference fit with the ratchet; and/or, the pawl is equipped with a plurality ofly, and is a plurality of the pawl is followed the even interval setting of the circumferential direction of lantern ring seat, the ratchet is followed when first turn to rotate, lantern ring seat for the axis of rotation keeps motionless, lantern ring seat is followed when first turn to rotate, lantern ring seat drives the ratchet rotates along first direction.

In one embodiment, the unidirectional rotation assembly includes a unidirectional needle bearing, an inner ring of the unidirectional needle bearing is sleeved outside the rotation shaft, the torque wrench is connected with an outer ring of the unidirectional needle bearing, when the rotation shaft rotates in the first direction, the inner ring of the unidirectional needle bearing rotates around a central axis of the rotation shaft, the outer ring of the unidirectional needle bearing is kept still, and when the outer ring of the unidirectional needle bearing rotates around the central axis of the rotation shaft in the first direction, the outer ring of the unidirectional needle bearing drives the inner ring of the unidirectional needle bearing to rotate in the first direction.

In one embodiment, the rotating shaft is in interference fit with an inner race of the unidirectional needle bearing.

In one embodiment, the rotating shaft is provided with a limiting member along an axial direction of the rotating shaft, and the limiting member abuts against two end surfaces of the clutch.

In one embodiment, the limiting member includes two clamping rings, two clamping grooves are arranged at an interval on the rotating shaft along the axial direction of the rotating shaft, the two clamping grooves are respectively located at two ends of the clutch, the two clamping rings are respectively clamped in the two clamping grooves, and the two clamping rings respectively abut against two ends of the clutch.

In one embodiment, the clutch device further comprises a connecting rod, one end of the connecting rod is connected with the clutch, and the other end of the connecting rod is provided with a second inserting hole for inserting an output end of the torque wrench.

The application also provides a bolt fastening device, including air wrench, torque wrench and as above the bolt tightening transition subassembly, first spliced eye is used for inserting air wrench, the clutch with torque wrench is connected.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Furthermore, the drawings are not to scale of 1:1, and the relative dimensions of the various elements in the drawings are drawn only by way of example and not necessarily to true scale. In the drawings:

fig. 1 is a schematic structural view of a bolt tightening transition assembly according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along plane A-A of the bolt tightening transition assembly of FIG. 1;

fig. 3 is a schematic structural view of a rotating shaft of the bolt tightening transition assembly according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a second insertion hole according to an embodiment of the present invention.

The elements in the figure are labeled as follows:

10. the transition assembly is screwed by bolts; 110. a rotating shaft; 1101. a first pole segment; 1102. a second pole segment; 111. a first plug hole; 112. connecting holes; 113. a card slot; 114. a groove; 120. a clutch; 121. a collar seat; 130. a snap ring; 140. a connecting rod; 141. and a second plug hole.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present application provides a bolt-up transition assembly 10 comprising: a rotating shaft 110 and a clutch 120. One end of the rotating shaft 110 is provided with a first insertion hole 111 for inserting an output end of a pneumatic wrench. The other end of the rotation shaft 110 is provided with a coupling hole 112 for receiving a nut. The clutch is sleeved on the rotating shaft, and the clutch 120 is connected with the torque wrench. The clutch 120 has an idling state and a locked state on the rotating shaft 110. In the idle state, the clutch 120 does not transmit the rotation of the rotating shaft 110 to the torque wrench. In the locked state, the torque wrench drives the clutch 120 and the rotating shaft 110 to rotate about the central axis of the rotating shaft 110.

In the structure of the bolt-tightening transition assembly 10, one end of the rotating shaft 110 is provided with a first insertion hole 111, and the first insertion hole 111 is used for inserting an output end of a pneumatic wrench. The other end of the rotation shaft 110 is provided with a coupling hole 112, and the coupling hole 112 is used for placing a nut. The clutch 120 is sleeved on the rotating shaft 110, the clutch 120 is connected with a torque wrench, and the clutch 120 has an idle state and a locked state on the rotating shaft 110. Since the clutch 120 does not transmit the rotation of the rotating shaft 110 to the torque wrench when the clutch 120 is in the idle state. Therefore, after the air wrench outputs power, the rotating shaft 110 may rotate, but both the clutch 120 and the torque wrench remain stationary, and at this time, the nut in the connection hole 112 on the other end of the rotating shaft 110 is screwed on the screw to screw the nut to the attached state. Because when the clutch 120 is in a locked state, the torque wrench can drive the clutch 120 and the rotating shaft 110 to rotate by using the central shaft of the rotating shaft 110 as a rotating shaft, so that the torque wrench can be used for performing fixed-torque rotation on the nut and locking the bolt by using fixed torque. In the use process of the bolt tightening transition assembly 10, the connecting holes 112 are always sleeved outside the bolt, any wrench can work independently without mutual influence, and convenience in bolt tightening operation is improved.

In addition to the above embodiments, in one embodiment, the clutch 120 includes a unidirectional rotating component. The unidirectional rotation component is sleeved on the rotation shaft 110 and connected with the torque wrench. When the rotation shaft 110 rotates in the first direction using its center axis as a rotation axis, the unidirectional rotation member remains stationary with respect to the rotation shaft 110. When the unidirectional rotation component uses the central axis of the rotation shaft 110 as the rotation shaft to rotate along the first direction, the unidirectional rotation component can drive the rotation shaft 110 to rotate. Thus, after the pneumatic wrench outputs power, the rotating shaft 110 rotates along the first direction, the nut in the connecting hole 112 on the other end of the rotating shaft 110 is screwed on the screw rod, so that the nut is screwed to the attaching state, but in the process, the unidirectional rotating assembly and the torque wrench are both kept still. When using torque wrench to decide the moment of torsion to rotate the nut, rotate torque wrench, and can drive one-way rotating assembly and axis of rotation 110 and use the center pin of axis of rotation 110 to rotate along first direction as the pivot to decide torque locking bolt.

The first turning direction may be a direction in which the rotation shaft 110 rotates clockwise around its own central axis, or the first turning direction may be a direction in which the rotation shaft 110 rotates counterclockwise around its own central axis.

It should be noted that the first turning direction may be a direction in which the nut is tightened on the screw.

Specifically, in the present embodiment, the first direction turning is a direction in which the rotating shaft 110 is rotated clockwise with its own center axis as a rotating shaft, and is a direction in which the nut is tightened on the bolt.

Optionally, the clutch 120 may also include an electromagnetic coupling assembly. The electromagnetic coupling assembly includes a first electromagnetic coil and a second electromagnetic coil. The first electromagnetic ring is sleeved outside the rotating shaft 110, the second electromagnetic ring is sleeved outside the first electromagnetic ring, and the torque wrench is connected with the second electromagnetic ring. Wherein, have two kinds of states between first electromagnetism circle and the second electromagnetism circle: an attractive state and a repulsive state. When the first electromagnetic ring is in a repulsive state, the second electromagnetic ring is not in contact with the first electromagnetic ring, the rotating shaft 110 drives the first electromagnetic ring to rotate along the first rotation direction by taking the central shaft of the rotating shaft 110 as a rotating shaft, and at the moment, the second electromagnetic ring and the torque wrench are kept still. When being in the looks suction state, first electromagnetic ring and second electromagnetic ring fixed connection, torque wrench drive second electromagnetic ring and first electromagnetic ring use the center pin of axis of rotation 100 as the pivot along first rotation to rotate to decide the moment of torsion and be fixed in the nut on the screw rod.

Referring to fig. 1 and 2, in addition to the above embodiments, in one embodiment, the unidirectional rotation assembly includes a collar seat 121, a ratchet and a pawl. The ratchet sleeve is arranged outside the rotating shaft 110, and one end of the pawl is abutted to the gear teeth of the ratchet. When the ratchet wheel rotates in the first direction, the ratchet wheel can rotate relative to the pawl about the central axis of the rotating shaft 110. When the ratchet wheel rotates along the direction departing from the first rotating direction, the pawl is abutted between two adjacent gear teeth of the ratchet wheel, and the pawl blocks the ratchet wheel from rotating along the direction departing from the first rotating direction. One end of the pawl far away from the ratchet wheel is connected with the ring sleeving seat 121, the ring sleeving seat 121 is arranged outside the rotating shaft 110 and can rotate relative to the rotating shaft 110, and the torque wrench is connected with the ring sleeving seat 121. The ratchet wheel and the pawl form a unidirectional intermittent motion mechanism, so that the ratchet wheel can only rotate along the first rotation direction.

Further, the rotation shaft 110 is interference-fitted with the ratchet. Thus, when the torque wrench is used, the torque wrench can drive the rotation shaft 110 to rotate to tighten the bolt at a constant torque value.

In another embodiment, the pawl is provided in plurality. Thus, the stability in the one-way driving process can be ensured.

Further, a plurality of pawls are provided at regular intervals in the circumferential direction of the collar base 121. When the ratchet wheel rotates in the first direction, the collar base 121 remains stationary relative to the rotating shaft 110. When the collar seat 121 rotates along the first direction, the collar seat 121 drives the ratchet wheel to rotate along the first direction.

Specifically, in the present embodiment, the pawl is hinged to the inner wall of the collar seat 121, and the teeth of the ratchet wheel extend away from the first direction, so that the ratchet wheel can rotate in the first direction. When the pneumatic wrench outputs power, the rotating shaft 110 drives the ratchet wheel to rotate in the first direction, and at the moment, the teeth of the ratchet wheel push the pawl open, the ring-sleeving seat 121 is kept immovable relative to the ratchet wheel and the rotating shaft 110, so that the torque wrench connected with the ring-sleeving seat 121 is also kept immovable. After the pneumatic wrench screws the bolt to the fitting state, the connecting hole 112 is continuously sleeved on the periphery of the bolt, and at the moment, the torque wrench is held and rotated according to the set torque force value. Because torque wrench is connected with lantern ring seat 121, when lantern ring seat 121 rotated along first turn, at this moment, the pawl will the joint on the ratchet between two adjacent teeth of a cogwheel, so, lead to lantern ring seat 121 to drive ratchet and axis of rotation 110 all along first turn to the rotation when rotating along first turn, so, can make torque wrench rotate and fixation nut with the fixed torque value.

Optionally, in another embodiment, the unidirectional rotation assembly comprises a unidirectional needle bearing. The inner ring of the one-way needle bearing is sleeved outside the rotating shaft 110, and the torque wrench is connected with the outer ring of the one-way needle bearing. When the rotating shaft 110 rotates in the first direction, the inner race of the one-way needle bearing rotates about the central axis of the rotating shaft 110. The outer ring of the unidirectional needle bearing is kept stationary, and when the outer ring of the unidirectional needle bearing rotates in a first direction with the central shaft of the rotating shaft 110 as a rotating shaft, the outer ring of the unidirectional needle bearing drives the inner ring of the unidirectional needle bearing to rotate in the first direction. Thus, when the air wrench drives the rotating shaft 110 to rotate along the first direction, only the rotating shaft 110 is rotated in one direction without affecting the torque wrench. In addition, when the torque wrench drives the unidirectional needle bearing to rotate along the first direction by using the central axis of the rotating shaft 110 as the rotating shaft, the unidirectional needle bearing can drive the rotating shaft 110 to rotate along the first direction.

Further, the rotating shaft 110 is interference-fitted with an inner race of the unidirectional needle bearing. Thus, when the torque wrench is used, the torque wrench can drive the rotation shaft 110 to rotate to tighten the bolt at a constant torque value.

In order to avoid that the clutch 120 moves on the rotating shaft 110 to affect the force application when the torque wrench is rotated, in an embodiment based on the above embodiment, a limiting member is provided on the rotating shaft 110 along the axial direction of the rotating shaft 110. The stoppers abut against both end surfaces of the clutch 120.

Specifically, in an embodiment, the limiting members are located at two ends of the collar seat 121, and the limiting members abut against two end surfaces of the collar seat 121, so as to prevent the collar seat 121 from moving on the rotating shaft 110.

Specifically, in another embodiment, the limiting members are located at two ends of the unidirectional needle bearing, and the limiting members abut against two end surfaces of the unidirectional needle bearing to prevent the unidirectional needle bearing from moving on the rotating shaft 110.

Referring to fig. 1 and 3, in particular, the position-limiting member includes two snap rings 130. Two clamping grooves 113 are arranged on the rotating shaft 110 at intervals along the axial direction of the rotating shaft 110, the two clamping grooves 113 are respectively located at two ends of the clutch 120, and the two clamping rings 130 are respectively abutted to two ends of the clutch 120. The two snap rings 130 are respectively snapped into the two snap grooves 113 to support and limit the movement of the clutch on the rotating shaft 110.

Alternatively, the limiting member may be any abutting block, and the abutting block only needs to be disposed in the clamping groove 113 and abut against two ends of the clutch 120, so as to limit the moving range of the clutch 120 between two clamping grooves 113 on the rotating shaft 110.

Referring to fig. 1 and 2, in addition to the above embodiments, in one embodiment, the bolt-on transition assembly 10 further includes a connecting rod 140. One end of the connecting rod 140 is connected to the clutch 120, and the other end of the connecting rod 140 is provided with a second insertion hole 141. The second insertion hole 141 is for inserting an output end of a torque wrench. Thus, the fixed-torque wrench of different models can be replaced on the bolt tightening transition assembly 10 conveniently, so that the applicability of the bolt tightening transition assembly 10 is improved.

Referring to fig. 4, in the present embodiment, the cross section of the second plugging hole 141 is a regular hexagon structure.

In one embodiment, the connecting rod 140 is detachably disposed on the clutch 120. For example, the connecting rod 140 is mounted to the clutch 120 by means of a snap or screw connection. Alternatively, the connecting rod 140 may be detachably disposed on the clutch 120, as long as the connecting rod and the clutch can be detachably disposed.

In another embodiment, the connecting rod 140 may also be fixed to the clutch 120. For example, the connecting rod 140 is integrally formed on the clutch 120. Alternatively, the connecting rod 140 may be formed on the clutch 120 by stamping, forging. The connecting rod 140 is integrally formed on the clutch 120, so that the assembling time can be saved, the connecting strength of the connecting rod 140 and the clutch 120 is improved, and the use stability of the bolt tightening transition assembly 10 is improved.

To ensure the strength of the bolt tightening transition assembly 10, in particular, in the present embodiment, the rotating shaft 110 is a metal shaft. In this manner, the stability of use of the bolt-on transition assembly 10 may be ensured.

Further, the clutch 120 is a metal material. In this manner, the structural strength of the bolt-on transition assembly 10 may be improved.

To improve the suitability of the bolt-down transition assembly 10, optionally, in another embodiment, continuing to refer to fig. 1 and 2, the rotating shaft 110 includes a first shaft segment 1101 and a second shaft segment 1102 that are connected. The outer wall of the first shaft section 1101 is provided with a protruding clamping bead. An open accommodating cavity is formed in one end, facing the first shaft section 1101, of the second shaft section 1102, and a plurality of adjusting holes matched with the clamping beads are formed in the second shaft section 1102 in the axial direction of the second shaft section. The first shaft segment 1101 is inserted within the second shaft segment 1102. The connecting hole 112 is disposed at an end of the first shaft segment 1101 away from the second shaft segment 1102, and the first inserting hole 111 is disposed at an end of the second shaft segment 1102 away from the first shaft segment 1101. In this manner, in special cases, such as where there is an obstruction or a long distance between the bolt and screw joint and the worker, the length of the rotating shaft 110 can be changed by adjusting the relative distance between the first shaft end 1101 and the second shaft section 1102 to accomplish the long distance bolting work.

The application also provides a bolt fastening device. Including pneumatic wrenches, torque wrenches, and the bolt tightening transition assembly 10 described above. The first insertion hole 111 is used for inserting a pneumatic wrench, and the clutch 120 is connected with a torque wrench.

Alternatively, in another embodiment, the outer wall of the rotation shaft 110 near one end of the first insertion hole 111 is provided with a groove 114. The output end of the pneumatic wrench is provided with a clamping member, and when the pneumatic wrench is connected with the rotating shaft 110, the clamping member is clamped in the groove 114. Thus, the stability of the connection between the air wrench and the rotary shaft 110 is further improved.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A bolt-up transition assembly, comprising:

the pneumatic wrench comprises a rotating shaft, a first connecting hole is formed in one end of the rotating shaft and used for being inserted into an output end of a pneumatic wrench, and a connecting hole is formed in the other end of the rotating shaft and used for placing a nut; and

the clutch is sleeved on the rotating shaft and is connected with the torque wrench, and the clutch has an idle state and a locking state on the rotating shaft; in an idle state, the clutch cannot transmit the rotation of the rotating shaft to the torque wrench; and in a locking state, the torque wrench drives the clutch and the rotating shaft to rotate by taking the central shaft of the rotating shaft as a rotating shaft.

2. The bolt-tightening transition assembly according to claim 1, wherein the clutch includes a unidirectional rotation assembly, the unidirectional rotation assembly is sleeved on the rotation shaft, the unidirectional rotation assembly is connected to the torque wrench, the unidirectional rotation assembly is kept stationary relative to the rotation shaft when the rotation shaft rotates in a first direction with a central axis of the rotation shaft as a rotation axis, and the unidirectional rotation assembly can drive the rotation shaft to rotate when the unidirectional rotation assembly rotates in the first direction with the central axis of the rotation shaft as a rotation axis.

3. The bolt tightening transition assembly according to claim 2, wherein the unidirectional rotation assembly includes a collar seat, a ratchet and a pawl, the ratchet is sleeved outside the rotation shaft, one end of the pawl abuts against teeth of the ratchet, when the ratchet rotates in the first direction, the ratchet can rotate relative to the pawl with the central axis of the rotation shaft as a rotation axis, when the ratchet rotates in the direction away from the first direction, the pawl abuts between two adjacent teeth of the ratchet to block the ratchet from rotating in the direction away from the first direction, one end of the pawl, which is away from the ratchet, is connected with the collar seat, the collar seat is sleeved outside the rotation shaft and can rotate relative to the rotation shaft, and a torque wrench is connected with the collar seat.

4. The bolt-tightening transition assembly according to claim 3, wherein the rotational shaft is an interference fit with the ratchet;

and/or, the pawl is equipped with a plurality ofly, and is a plurality of the pawl is followed the even interval setting of the circumferential direction of lantern ring seat, the ratchet is followed when first turn to rotate, lantern ring seat for the axis of rotation keeps motionless, lantern ring seat is followed when first turn to rotate, lantern ring seat drives the ratchet rotates along first direction.

5. The bolted transition assembly of claim 2, wherein the unidirectional rotating assembly comprises a unidirectional needle bearing, an inner race of the unidirectional needle bearing is sleeved outside the rotating shaft, the torque wrench is connected with an outer race of the unidirectional needle bearing, when the rotating shaft rotates in the first direction, the inner race of the unidirectional needle bearing rotates around a central axis of the rotating shaft, the outer race of the unidirectional needle bearing remains stationary, and when the outer race of the unidirectional needle bearing rotates around the central axis of the rotating shaft in the first direction, the outer race of the unidirectional needle bearing drives the inner race of the unidirectional needle bearing to rotate in the first direction.

6. The bolted transition assembly of claim 5 wherein said rotating shaft is in interference fit with an inner race of said one-way needle bearing.

7. The bolt-tightening transition assembly according to claim 1, wherein a stopper is provided on the rotating shaft in an axial direction of the rotating shaft, the stopper abutting against both end surfaces of the clutch.

8. The bolt-tightening transition assembly according to claim 7, wherein the limiting member includes two snap rings, two snap grooves are spaced apart from each other along the axial direction of the rotating shaft, the two snap grooves are respectively located at two ends of the clutch, the two snap rings are respectively snap-fitted into the two snap grooves, and the two snap rings are respectively abutted against two ends of the clutch.

9. The bolt tightening transition assembly according to any one of claims 1-8, further comprising a connecting rod, one end of the connecting rod being connected to the clutch, the other end of the connecting rod being provided with a second insertion hole for insertion of an output end of a torque wrench.

10. A bolt fastening device comprising a pneumatic wrench, a torque wrench and the bolt tightening transition assembly as claimed in any one of claims 1 to 9, wherein the first insertion hole is adapted to receive the pneumatic wrench, and the clutch is coupled to the torque wrench.

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