CN222680794U

CN222680794U - Moment tool for double-end stud

Info

Publication number: CN222680794U
Application number: CN202420439214.8U
Authority: CN
Inventors: 白泽兵; 任广笑; 申成龙; 王卫勇; 王乐罡; 贺妍霞; 常杰; 郭慧强; 张晓晓; 王文丽; 杜文胜
Original assignee: Shanxi Jianghuai Heavy Industry Co Ltd
Current assignee: Shanxi Jianghuai Heavy Industry Co Ltd
Priority date: 2024-03-07
Filing date: 2024-03-07
Publication date: 2025-03-28
Anticipated expiration: 2034-03-07

Abstract

The utility model proposes a torque tool for studs, which belongs to the field of torque tooling, and includes a sleeve assembly, a tightening assembly and a connecting rod, wherein the sleeve assembly is provided with two symmetrical slots, and the sleeve assembly is connected to one end of the stud; the tightening assembly is provided with a circular hole, and the tightening assembly is inserted into the sleeve assembly; the connecting rod passes through the slot and the circular hole to connect the sleeve assembly and the tightening assembly; wherein the tightening assembly is brought into contact with the end face of the stud, and the tightening assembly is rotated to move upward/downward along the slot, and the slot converts the rotational degree of freedom of the tightening assembly into a linear degree of freedom, thereby tightening the stud. The utility model has the characteristics of simple operation, long service life, effective avoidance of thread failure, and greatly improved assembly efficiency and reliability of studs.

Description

Moment tool for double-end stud

Technical Field

The utility model belongs to the field of moment tools, and particularly relates to a moment tool for a stud.

Background

The stud is used as a key part for connecting the central axis of a mechanical product, has wider application, and has stricter requirement on moment in the assembly process. Currently, in the actual assembly process, one end of the stud is attached to the part and torque is applied to the stud by the stud wrench. The existing stud wrench structure comprises a threaded sleeve and a threaded ejector rod, and the rotating moment is tightly ejected to the other end of the stud through the threaded ejector rod by means of the threaded characteristic, and the moment is applied by utilizing friction force. The tool has the advantages that after the moment is in place, the stud can reversely rotate when the tool is reversely disassembled, so that the moment is inaccurate, and when the tool is used for a long time, the threads at the thread ejector rod are repeatedly loaded under the action of axial force, and the threads can deform, fatigue crack and the like.

Disclosure of utility model

The details of one or more embodiments of the utility model are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the utility model.

The torque tool for the stud solves the technical problems that torque is inaccurate and deformation failure is easy to occur due to repeated loading of the threads under the action of axial force caused by reverse rotation of the stud when torque is applied through the characteristics of the threads in the prior art and the tool is reversely disassembled, and has the characteristics of simplicity in operation and long service life, the failure of the threads is effectively avoided, and the assembly precision, the assembly efficiency and the reliability of the stud are greatly improved.

The utility model discloses a moment tool for a stud, which comprises a sleeve component, a tightening component and a connecting rod, wherein two symmetrical slotted holes are formed in the sleeve component, the sleeve component is connected with one end of the stud, a round hole is formed in the tightening component, the tightening component penetrates through the sleeve component, the connecting rod penetrates through the slotted holes and the round hole to connect the sleeve component and the tightening component, the tightening component is contacted with the end face of the stud, the tightening component moves upwards/downwards along the slotted holes through rotation, and the rotational freedom degree of the tightening component is converted into linear freedom degree through rotation of the slotted holes, so that tightening of the stud is realized.

In some embodiments, the slot is a V-shaped slot, an opening of the V-shaped slot being oriented toward the stud.

In some embodiments, the opening angle of the V-shaped slot is 150 ° to 170 °.

In some embodiments, the sleeve assembly comprises a large sleeve and a small sleeve, wherein the inner diameter of the large sleeve is larger than or equal to the outer diameter of the propping assembly, two symmetrical slotted holes are formed in the large sleeve, internal threads matched with the double-end stud are formed in the small sleeve, and the small sleeve is connected with the large sleeve.

In some of these embodiments, the small sleeve is detachably connected to the large sleeve.

In some of these embodiments, the large sleeve is provided with a first chamfer at both ends and the small sleeve is provided with a second chamfer at both ends.

In some embodiments, the propping assembly comprises an outer hexagonal head, a propping rod and a plug, wherein one end of the propping rod is connected with the outer hexagonal head, the plug is conical, the plug is connected with the other end of the propping rod, and the outer diameter of the plug is smaller than the inner diameter of the small sleeve.

In some embodiments, the tightening rod is provided with the round holes, and the round holes are provided with a plurality of round holes along the axial direction of the tightening rod.

In some embodiments, the connecting rod is cylindrical, and the two ends of the connecting rod are provided with third chamfers.

In some of these embodiments, the outer diameter of the connecting rod matches the width of the V-shaped slot.

Compared with the prior art, the utility model has the beneficial effects that:

The utility model provides a moment tool for a stud, which solves the technical problems that when moment is applied by screw thread characteristics, the stud reversely rotates when the tool is reversely disassembled, so that the moment is inaccurate, deformation failure is easy to occur when the screw thread is repeatedly loaded under the action of axial force, and the moment tool has the characteristics of simplicity in operation and long service life, effectively avoids the failure of the screw thread, and greatly improves the assembly precision, the assembly efficiency and the reliability of the stud. Through setting up two symmetrical slotted holes on the sleeve subassembly and setting up the round hole on the tight subassembly of top, pass the connecting rod slotted hole and the round hole with sleeve subassembly and tight subassembly of top connect the back, rotatory tight subassembly of top is upwards/down along the slotted hole, the slotted hole can be with the rotatory degree of freedom of tight subassembly of top change into sharp degree of freedom to realize the tight top to the stud, when reaching required moment and need dismantle the frock, only need reverse slightly rotate tight subassembly of top can separate tight subassembly of top and stud, improved production efficiency greatly, effectively saved man-hour cost etc..

The utility model designs the slot hole on the sleeve component into a V-shaped slot hole, the opening direction is the direction facing the stud, when a moment is applied to the stud, the rotation freedom degree can be converted into the linear feeding freedom degree of forward movement by rotating the propping component upwards/downwards, so that the propping action of the stud is realized, the opening angle of the V-shaped slot hole is designed to be 150-170 degrees, in the actual use process, the smaller the opening angle is, the larger the forward movement displacement of the propping component is, but the moment precision can be influenced to a certain extent in the force application process, and the larger the opening angle is, the smaller the forward movement displacement of the propping component can possibly cause that the required moment requirement cannot be met.

According to the utility model, the large sleeve and the small sleeve are designed to be detachably connected, and the studs with different types and specifications can be satisfied by replacing different small sleeves, so that the use efficiency of the moment tool is greatly improved, and meanwhile, the production cost is effectively reduced.

According to the torque tool, the two ends of the large sleeve and the small sleeve are subjected to chamfering treatment, so that the safety of the torque tool in the assembling and disassembling processes can be guaranteed, and meanwhile, the torque tool has an attractive effect.

The jacking component comprises the outer hexagonal head, the outer hexagonal head can be effectively matched with a torque wrench, the practicability is high, the jacking component is rotated through the torque wrench, when the 'pyridazine' sound of the torque wrench is detected, the torque reaches the required requirement, the designed jacking head is conical, the jacking head is contacted with the end face of the stud, and the jacking head with the conical structure is favorable for uniform distribution of the stud in the stress process and reduces stress concentration.

According to the utility model, the plurality of round holes are formed in the axial direction of the jacking rod, so that the distance between the jacking component and the stud can be effectively adjusted through the positions of the round holes, and the contact between the jacking component and the stud can be better met.

According to the utility model, the connecting rod is arranged in a cylindrical shape, the outer diameter of the connecting rod is matched with the width of the V-shaped slotted hole, the V-shaped slotted hole can be matched with the V-shaped slotted hole, and the V-shaped slotted hole can be used as a guide slot of the connecting rod, so that the connecting rod cannot shake or deviate in the rotating process, and the torque application precision is further improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of a torque tool for a stud according to an embodiment of the present utility model;

Fig. 2 is a schematic structural diagram of a torque tool for a stud according to an embodiment of the present utility model after being assembled with the stud;

FIG. 3 is a schematic structural view of a sleeve assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a tightening assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a connecting rod according to an embodiment of the present utility model;

In the figures, a 1-sleeve assembly, a 101-V-shaped slot, a 102-large sleeve, a 103-small sleeve, a 104-first chamfer, a 105-second chamfer, a 2-jacking assembly, a 201-round hole, a 202-outer hexagonal head, a 203-jacking rod, a 204-jacking head, a 3-connecting rod, a 301-third chamfer and a 4-stud.

Detailed Description

The present utility model will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

An embodiment of the utility model provides a moment tool for a stud, fig. 1 is a schematic structural diagram of the moment tool for the stud according to the embodiment of the utility model, and fig. 2 is a schematic structural diagram of the moment tool for the stud after being assembled with the stud according to the embodiment of the utility model. Referring to fig. 1-2, the tool at least comprises a sleeve component 1, a propping component 2 and a connecting rod 3, wherein two symmetrical slotted holes are formed in the sleeve component 1, the sleeve component 1 is connected with one end of a stud 4, a round hole 201 is formed in the propping component 2, the propping component 2 penetrates through the sleeve component 1, the connecting rod 3 penetrates through the slotted holes and the round hole 201 to connect the sleeve component 1 and the propping component 2, the propping component 2 is contacted with the end face of the stud 4, the propping component 2 moves upwards/downwards along the slotted holes through rotation, the rotation freedom degree of the propping component 2 is converted into linear freedom degree through rotation of the slotted holes, and the propping of the stud 4 is achieved. The utility model abandons the design of the internal thread structure of the prior stud 4 for torque, effectively solves the problem of small torque value caused by loosening the tool after the internal thread structure tightens the stud, simultaneously avoids the technical problems of thread damage and deformation failure caused by repeated use for a long time, has the characteristics of simple operation and long service life, effectively avoids the failure of the threads, and greatly improves the assembly precision, the assembly efficiency and the reliability of the stud 4.

Further, the slot is a V-shaped slot 101, and the opening direction of the V-shaped slot 101 faces the stud 4. The torque tool for the stud converts the rotational freedom into the linear feeding displacement freedom through the ingenious design of the centripetal V-shaped slotted hole 101, not only can realize the function of an internal thread structure, but also can greatly prolong the service life of the tool, and has the characteristics of simplicity in operation and capability of effectively improving the assembly precision, the assembly efficiency and the reliability of the stud 4. When the stud 4 is tightened, the tightening assembly 2 can be separated from the stud 4 by slightly rotating the tightening assembly 2 in the opposite direction to unload force. Greatly improves the production efficiency, saves the labor hour cost and enlarges the operation space for the subsequent production.

Further, the opening angle of the V-shaped slot 101 is 150 DEG to 170 deg.

In some embodiments, the smaller the opening angle, the larger the displacement of the forward movement of the tightening assembly, but the torque accuracy may be affected to a certain extent during the force application, and the larger the opening angle, the smaller the displacement of the forward movement of the tightening assembly may result in failure to achieve the required torque requirement, so the opening angle of the V-shaped slot is preferably 150 ° to 170 °.

Further, as shown in fig. 3, the sleeve assembly 1 comprises a large sleeve 102 and a small sleeve 103, wherein the inner diameter of the large sleeve 102 is larger than or equal to the outer diameter of the jacking assembly 2, two symmetrical slotted holes are formed in the large sleeve 102, internal threads matched with the stud 4 are formed in the small sleeve 103, and the small sleeve 103 is connected with the large sleeve 102. The inner diameter of the large sleeve 102 is designed to be larger than or equal to the outer diameter of the jacking component 2, so that the jacking component 2 can effectively penetrate through the large sleeve 102 to apply torque to the stud 4, and the operation is simple.

Further, the small sleeve 103 is detachably connected with the large sleeve 102. According to the utility model, the large sleeve 102 and the small sleeve 103 are designed to be detachably connected, and the studs 4 with different types and specifications can be satisfied by replacing different small sleeves 103, so that the use efficiency of the moment tool is greatly improved, and meanwhile, the production cost is effectively reduced.

Further, the large sleeve 102 is provided with a first chamfer 104 at both ends, and the small sleeve 103 is provided with a second chamfer 105 at both ends. The chamfering treatment can ensure the safety of the moment tool in the assembling and disassembling processes, and simultaneously has an attractive effect.

Further, as shown in fig. 4, the propping assembly 2 comprises an outer hexagonal head 202, a propping rod 203 and a plug 204, wherein one end of the propping rod 203 is connected with the outer hexagonal head 202, the plug 204 is conical, the plug 204 is connected with the other end of the propping rod 203, and the outer diameter of the plug 204 is smaller than the inner diameter of the small sleeve 103. The jacking component 2 can be effectively matched with the existing torque wrench by arranging the outer hexagonal head 202, the practicability is high, the jacking component 2 is rotated by the torque wrench, when the 'pyridazine' sound of the torque wrench is detected, the torque reaches the required requirement, the designed plug 204 is conical, the plug 204 can be better contacted with the end face of the stud 4, and the plug 204 with the conical structure is favorable for uniform distribution of the stud 4 in the stress process, so that stress concentration is reduced.

Further, the tightening rod 203 is provided with a circular hole 201, and a plurality of circular holes 201 are provided along the axial direction of the tightening rod 203. According to the utility model, the plurality of round holes 201 are arranged along the axial direction of the tightening rod 203, so that the distance between the tightening assembly 2 and the stud 4 can be effectively adjusted through the positions of the round holes 201, and the contact between the tightening assembly 2 and the stud 4 can be better satisfied.

Further, as shown in fig. 5, the connecting rod 3 has a cylindrical shape, and both ends of the connecting rod 3 are provided with third chamfers 301.

Further, the outer diameter of the connecting rod 3 is matched with the width of the V-shaped slot 101.

In some embodiments, the connecting rod 3 is configured to be cylindrical, and the outer diameter of the connecting rod 3 is matched with the width of the V-shaped slot 101, so that the connecting rod 3 can be matched with the V-shaped slot 101, and the V-shaped slot 101 can be used as a guide slot of the connecting rod 3, so that the connecting rod 3 cannot shake or deviate in the rotation process, and further the torque application precision is further improved.

The working process of the moment tool for the double-end stud comprises the following steps:

According to the moment tool for the stud, the jacking component 2 is inserted into the sleeve component 1, the round hole 201 of the jacking component 2 is aligned with the center of the V-shaped slot 101 of the sleeve component 1, and then the connecting rod 3 is inserted to enable the three components to be combined together, so that the moment tool for the stud is installed. At this time, one end of the stud 4 is screwed into the mounting hole, and the other end of the stud 4 is matched with the internal thread of the small sleeve 103 in the sleeve assembly 1, so that the end face of the stud 4 contacts with the top head 204 of the tightening assembly 2, and is matched with the outer hexagonal head 202 of the tightening assembly 2 by using a torque wrench. Then the screw rod is rotated to a required torque value according to the requirement, when the 'pyridazine' sound of the torque wrench is heard, the torque is indicated to be in place, at the moment, the screw rod is reversely rotated slightly to unload the jacking component 2, the top head 204 of the jacking component 2 is separated from the end face of the screw rod 4, finally the small sleeve 103 in the sleeve component 1 is reversely rotated lightly, the screw rod 4 is withdrawn, the torque value of the screw rod 4 meets the requirement, and the screw rod is not reversely loosened.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A torque tooling for a stud, comprising:

The sleeve assembly is provided with two symmetrical slotted holes and is connected with one end of the double-end stud;

The jacking assembly is provided with a round hole and penetrates through the sleeve assembly;

The connecting rod penetrates through the slotted hole and the round hole to connect the sleeve assembly and the jacking assembly;

the jacking assembly is contacted with the end face of the stud, and the jacking assembly is rotated to move upwards/downwards along the slotted hole, so that the slotted hole converts the rotation freedom degree of the jacking assembly into the linear freedom degree, and the jacking of the stud is realized.

2. The moment fixture for a stud according to claim 1, wherein the slot is a V-shaped slot, and an opening direction of the V-shaped slot is toward the stud.

3. The moment tooling for the stud according to claim 2, wherein the opening angle of the V-shaped slot is 150 ° to 170 °.

4. The torque tooling for a stud of claim 1, wherein the sleeve assembly comprises:

The inner diameter of the large sleeve is larger than or equal to the outer diameter of the jacking component, and two symmetrical slotted holes are formed in the large sleeve;

The small sleeve is internally provided with internal threads matched with the double-end stud, and the small sleeve is mutually connected with the large sleeve.

5. The torque tool for a stud according to claim 4, wherein the small sleeve is detachably connected to the large sleeve.

6. The torque tooling for a stud according to claim 5, wherein the large sleeve has a first chamfer at both ends and the small sleeve has a second chamfer at both ends.

7. The torque tooling for a stud of claim 4, wherein the tightening assembly comprises:

an outer hexagonal head;

The pushing rod is connected with the outer hexagonal head at one end;

The plug is conical, the plug is connected with the other end of the jacking rod, and the outer diameter of the plug is smaller than the inner diameter of the small sleeve.

8. The moment fixture for a stud according to claim 7, wherein the tightening rod is provided with the circular hole, and the circular hole is provided in plurality along an axial direction of the tightening rod.

9. The moment fixture for a stud according to claim 1, wherein the connecting rod is cylindrical, and both ends of the connecting rod are provided with third chamfers.

10. The moment tooling for a stud according to claim 2, wherein the outer diameter of the connecting rod matches the width of the V-shaped slot.