Safety auxiliary tool for knocking wrench

Abstract

The utility model relates to a safety auxiliary tool for knocking a wrench, which structurally comprises a connecting body, a connecting rod, a sleeve, an elastic piece and a detachable limiting piece, one end of the connecting body is provided with an internal threaded hole, the other end of the connecting body is provided with the connecting rod, the connecting body is sleeved with the sleeve, the connecting rod is provided with the detachable limiting piece, and the elastic piece is arranged on the connecting rod. An elastic piece is arranged between the detachable limiting piece and the sleeve and used for pressing the end face of the sleeve, and the length of the sleeve is larger than that of the connecting body. After the device is used, the knocking wrench does not need to be manually held by hands for limiting, the knocking wrench can be effectively prevented from falling off, the safety of an operator is guaranteed, after the device is used, the knocking wrench can be operated by only one person, the knocking wrench does not need to be originally held by one hand, and the knocking wrench does not need to be hit by the other person, so that manpower is saved.

Description

Technical Field

[0001] The utility model relates to a percussion wrench auxiliary tool, in particular to a percussion wrench safety auxiliary tool. Background Art

[0002] Most of the connections between pipelines and between pipelines and instrumentation equipment are made through flange structures, which have high requirements for sealing. The two flange surfaces need to be tightly connected by bolts. After the nuts are pre-tightened, it is generally necessary to use a percussion wrench to tighten the nuts again to ensure the sealing of the flange surfaces. For pipeline maintenance or equipment disassembly and replacement, the bolts on the flange need to be removed. Because the nuts are tightly screwed or rusted, it is generally necessary to use a percussion wrench to loosen the nuts before unscrewing them from the bolts.

[0003] However, when the existing percussion wrench is used, one operator holds the percussion wrench by hand, and another operator hits the percussion wrench with a hammer, without any auxiliary safety measures. The hands of the auxiliary operator are easily injured, and the percussion wrench is easy to fly out, and the safety of the on-site operators cannot be guaranteed. Utility Model Content

[0004] The utility model aims to provide a safety auxiliary tool for a percussion wrench, so as to solve the problem that the existing percussion wrench cannot ensure the safety of the operator when in use.

[0005] The utility model is implemented as follows: a safety auxiliary tool for a striking wrench, comprising a connecting body, a connecting rod, a sleeve, an elastic member and a detachable limiting member, wherein an internal threaded hole is opened at one end of the connecting body, the connecting rod is arranged at the other end of the connecting body, a sleeve is connected to the outer surface of the connecting body, a detachable limiting member is arranged on the connecting rod, an elastic member is arranged between the detachable limiting member and the sleeve, the elastic member is used to press the end face of the sleeve, and the length of the sleeve is greater than the length of the connecting body.

[0006] Furthermore, the detachable limiting member is sleeved on the connecting rod, a bayonet is provided on the inner wall of the detachable limiting member, a snap-in groove is provided on the surface of the connecting rod, and the bayonet is snapped into the snap-in groove to realize the quick connection between the detachable limiting member and the connecting rod.

[0007] Furthermore, the joint groove includes a first connecting groove, a second connecting groove and a positioning groove. The first connecting groove extends from the end face of the connecting rod along the axial direction and is connected to the middle part of the second connecting groove. The first connecting groove and the second connecting groove are T-shaped structures, and positioning grooves are provided at both ends of the second connecting groove.

[0008] Furthermore, the sleeve and the connecting rod are slidably connected.

[0009] Furthermore, the elastic member is a spring.

[0010] Furthermore, a screwing portion is provided at the end of the connecting rod.

[0011] Furthermore, a ball bearing is arranged on the end surface of the sleeve.

[0012] The utility model is a safety auxiliary tool for a percussion wrench. When the percussion wrench is used to tighten a nut or loosen a nut, the percussion wrench is installed on a flange nut, and a connector of the utility model is screwed onto an exposed section of a flange bolt. Under the elastic force of a spring, the end of a sleeve is pressed onto a side surface of the percussion wrench, thereby pressing the percussion wrench onto the side surface of the flange. When the percussion wrench is struck, the percussion wrench can be prevented from falling out due to the limiting effect of the sleeve.

[0013] When the strike wrench is rotated to a certain angle, it is sometimes necessary to readjust the angle of the strike wrench to facilitate the operator's striking. At this time, the detachable limiter is removed from the connecting rod to release the clamping effect on the sleeve, and the sleeve and the strike wrench are moved outward. After adjusting the angle of the strike wrench, the strike wrench is re-sleeved on the flange nut, and the sleeve, elastic part and detachable limiter are reinstalled, and the operation of the strike wrench can continue.

[0014] After using the utility model, there is no need to manually hold the knock wrench to limit it, which can effectively prevent the knock wrench from falling out and ensure the safety of the operator. After using the utility model, only one person is needed to operate the knock wrench, and there is no need for one person to hold the knock wrench while another person hits the knock wrench, thus saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model.

[0016] Figure 2 It is a structural diagram of the card slot of the utility model.

[0017] Figure 3 It is a usage state diagram of the utility model.

[0018] In the figure: 1. connector; 2. internal threaded hole; 3. sleeve; 4. removable limiter; 5. elastic member; 6. connecting rod; 7. screwing part; 8. bayonet pin; 9. joint groove; 10. flange; 11. flange bolt; 12. flange nut; 13. strike wrench 9-1. first connecting groove; 9-2. second connecting groove; 9-3. positioning groove. DETAILED DESCRIPTION

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] like Figure 1As shown, the utility model comprises a connector 1, a connecting rod 6, a sleeve 3, an elastic member 5 and a removable stopper 4. An internal threaded hole 2 is provided at one end of the connector 1, a connecting rod 6 is provided at the other end of the connector 1, a sleeve 3 is connected to the outer surface of the connector 1, a removable stopper 4 is provided on the connecting rod 6, an elastic member 5 is provided between the removable stopper 4 and the sleeve 3, and the elastic member 5 is used to press the end surface of the sleeve 3, and the length of the sleeve 3 is greater than the length of the connector 1.

[0021] The connector 1 is used to connect with the flange bolt 11. For the flange connection structure of the pipeline, the flange bolt 11 will have one end of the bolt exposed outside when the flange nut 12 is installed. The utility model uses this part of the flange bolt 11 exposed outside for fixing.

[0022] The flange bolts 11 used for connecting the pipeline flange 10 are of several commonly used specifications, so the diameter of the internal threaded hole 2 on the connecting body 1 only needs to correspond to several commonly used specifications. The internal threaded hole 2 on the connecting body 1 has a certain depth, so that there is a certain connection length between the connecting body 1 and the flange bolts 11, thereby providing sufficient connection strength.

[0023] The detachable limiting member 4 and the connecting rod 6 are detachably connected, and the detachable connecting member can be a limiting nut. An end of the connecting rod 6 is provided with an external thread. The limiting nut is connected to the external thread of the connecting rod 6, so that the limiting nut can be disassembled and installed.

[0024] In order to increase the disassembly and assembly speed of the detachable limiting member 4, the following structure may also be adopted.

[0025] The detachable limit member 4 is a sleeve structure, which is sleeved on the connecting rod 6. A bayonet pin 8 is provided on the inner wall of the detachable limit member 4, and a bayonet groove is opened on the surface of the connecting rod 6. The bayonet pin 8 is inserted into the bayonet groove to realize quick connection or quick disassembly of the detachable limit member 4 and the connecting rod 6.

[0026] like Figure 2 As shown, the joint groove 9 includes a first connecting groove 9-1, a second connecting groove 9-2 and a positioning groove 9-3. The first connecting groove 9-1 extends from the end face of the connecting rod 6 along the axial direction and is connected with the middle part of the second connecting groove 9-2. The first connecting groove 9-1 and the second connecting groove 9-2 are in a T-shaped structure, and positioning grooves 9-3 are provided at both ends of the second connecting groove 9-2.

[0027] An end plate is provided on the detachable limiting member 4, which is convenient for the operator to push the detachable limiting member 4 to compress the elastic member 5, so that the bayonet 8 enters the first connecting groove 9-1 and moves along the first connecting groove 9-1 to the second connecting groove 9-2. After the bayonet 8 enters the second connecting groove 9-2, it can be selected to rotate toward one end in the second connecting groove 9-2 according to the rotation direction of the knocking wrench 13, so that the bayonet 8 enters the positioning groove 9-3 at the end of the second connecting groove 9-2. After releasing the hand, under the reset force of the elastic member 5, the bayonet 8 is stuck in the positioning groove 9-3 and cannot be disengaged. When it is necessary to remove the detachable limiting member 4, first push the detachable limiting member 4 toward one end of the flange 10 to disengage the bayonet 8 from the positioning groove 9-3, then rotate the detachable limiting member 4 to move the bayonet 8 along the second connecting groove 9-2 to the first connecting groove 9-1, and then the bayonet 8 is disengaged outward along the first connecting groove 9-1, so that the detachable limiting member 4 is removed. This structure can realize the rapid disassembly and assembly of the detachable limiting member 4.

[0028] The axis of the connecting rod 6 coincides with the axis of the connecting body 1 and the internal threaded hole 2, and the connecting rod 6 passes through the center of the end of the sleeve 3, so that the sleeve 3 is coaxial with the connecting rod 6. At the same time, the sleeve 3 and the connecting rod 6 are connected in a sliding manner, and the connecting rod 6 guides the movement of the sleeve 3, so that the sleeve 3 moves along the axis of the connecting rod 6 to prevent the sleeve 3 from deflecting.

[0029] like Figure 3 As shown, the diameter of the connector 1 is smaller than the profile of the flange nut 12, while the diameter of the inner wall of the sleeve 3 is slightly larger than the diameter of the flange nut 12, so that the end of the sleeve 3 can contact the end face of the strike wrench 13, and the connector 1 will not affect the outward movement of the strike wrench 13.

[0030] The elastic member 5 is a spring, which is sleeved on the connecting rod 6 , and after the utility model is assembled, the spring is in a compressed state, so that it provides a continuous force to the sleeve 3 .

[0031] A screwing portion 7 is provided at the end of the connecting rod 6. The screwing portion 7 is a triangular prism, a quadrangular prism, a hexagonal prism or the like. The connecting rod 6 and the connector 1 can be rotated through the screwing portion 7 by a corresponding wrench, so that the utility model can be installed on the flange bolt 11.

[0032] A ball bearing is provided on the end face of the sleeve 3, and the contact friction between the end face of the sleeve 3 and the end face of the strike wrench 13 is converted into rolling friction by the ball bearing, thereby reducing the friction between the two, thereby reducing the impact of the strike wrench 13 on the sleeve 3 when rotating.

[0033] like Figure 3As shown, the method of using the utility model is as follows: when using the knock wrench 13 to tighten the nut or loosen the nut, the knock wrench 13 is installed on the flange nut 12, and the connector 1 of the utility model is screwed to the exposed section of the flange bolt 11. Under the elastic force of the spring, the end of the sleeve 3 is pressed on the side of the knock wrench 13, thereby pressing the knock wrench 13 on the side of the flange plate 10, and then the knock wrench 13 is struck to tighten or loosen the flange nut 12; when the knock wrench 13 is rotated to a certain angle, the detachable limiter 4 is removed from the connecting rod 6, the sleeve 3 and the knock wrench 13 are moved outward, and after adjusting the angle of the knock wrench 13, the knock wrench 13 is re-sleeved on the flange nut 12, and the sleeve 3, the elastic member 5 and the detachable limiter 4 are re-installed, and the operation of the knock wrench 13 is continued until the flange nut 12 is completely tightened or completely loosened.

[0034] After the flange nut 12 is fully tightened, the utility model can be removed. If it is used to loosen the flange nut 12, after the flange nut 12 is loosened, the utility model is removed, and the nut can be continued to be screwed off from the flange bolt 11 manually.

[0035] After using the utility model, there is no need to manually hold the knock wrench 13 to limit it, which avoids the possibility of injuring the assistant's hand and can effectively prevent the knock wrench 13 from flying out, ensuring the safety of the operator. After using the utility model, only one person is needed to operate the knock wrench 13, and there is no need for one person to hold the knock wrench 13 and another person to hit the knock wrench 13, thus saving manpower.

Claims

1. A safety auxiliary tool for a percussion wrench, characterized in that: It includes a connecting body, a connecting rod, a sleeve, an elastic part and a detachable limiting part. An internal threaded hole is opened at one end of the connecting body, the connecting rod is arranged at the other end of the connecting body, a sleeve is connected to the outer sleeve of the connecting body, a detachable limiting part is arranged on the connecting rod, an elastic part is arranged between the detachable limiting part and the sleeve, the elastic part is used to press the end face of the sleeve, and the length of the sleeve is greater than the length of the connecting body.

2. The percussion wrench safety auxiliary tool according to claim 1, characterized in that: The detachable limiting member is sleeved on the connecting rod, a bayonet is provided on the inner wall of the detachable limiting member, a bayonet groove is provided on the surface of the connecting rod, and the bayonet is inserted into the bayonet groove to realize the quick connection between the detachable limiting member and the connecting rod.

3. The percussion wrench safety auxiliary tool according to claim 2, characterized in that: The snap-in groove includes a first connecting groove, a second connecting groove and a positioning groove. The first connecting groove extends from the end surface of the connecting rod along the axial direction and is connected to the middle of the second connecting groove. The first connecting groove and the second connecting groove are in a T-shaped structure, and positioning grooves are provided at both ends of the second connecting groove.

4. The percussion wrench safety auxiliary tool according to claim 1, characterized in that: The sleeve and the connecting rod are slidably connected.

5. The percussion wrench safety auxiliary tool according to claim 1, characterized in that: The elastic member is a spring.

6. The percussion wrench safety auxiliary tool according to claim 1, characterized in that: A screwing portion is arranged at the end of the connecting rod.

7. The percussion wrench safety auxiliary tool according to claim 1, characterized in that: Ball bearings are arranged on the end surface of the sleeve.

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