CN213226022U

CN213226022U - Double-end stud's erecting tool

Info

Publication number: CN213226022U
Application number: CN202022043039.5U
Authority: CN
Inventors: 王程伟; 杨晓光; 杨鑫; 邴丽华
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-05-18
Anticipated expiration: 2030-09-17

Abstract

The utility model discloses an assembling tool of stud, it belongs to assembly tool technical field, including the sleeve structure, the sleeve structure has the shoulder hole that link up its both ends, the shoulder hole includes big screw hole section and little screw hole section, the aperture of big screw hole section is greater than the aperture of little screw hole section, little screw hole section is used for screwing with stud; the rolling piece is arranged in the large screw hole section, and the radial size of the rolling piece in the large screw hole section is smaller than the aperture of the large screw hole section; and the abutting structure is screwed with the large screw hole section, and one end of the abutting structure can abut against the rolling piece. The utility model discloses can provide on the basis of sufficient tightening torque guaranteeing, when sleeve structure withdraws from, avoid the wearing and tearing to the screw thread on the long thread section and terminal surface, reduced the probability that the long thread section terminal surface was ground by a large scale for stud's assembly tool can have higher reliability.

Description

Double-end stud's erecting tool

Technical Field

The utility model relates to an assembly tool technical field especially relates to a stud's assembly tool.

Background

The double-end stud is a fastener with a polished rod in the middle and threads at two ends, and is widely applied to the industries of bridges, automobiles and the like. The two ends of the stud bolt comprise a long thread section and a short thread section, in the assembling process, the short thread section is usually firstly screwed into one connecting piece, then one end of the long thread section is controlled to penetrate through a through hole of the other connecting piece, and a nut is screwed on the long thread section to realize the connection of the two connecting pieces.

In the prior art, generally, the stud is assembled by using a pneumatic wrench and a sleeve, specifically, the sleeve is sleeved at one end of the stud, then the pneumatic wrench is inserted into the sleeve, the wrench drives the sleeve to rotate in the forward direction, the sleeve is screwed into the stud, the stud can be screwed into a connecting piece by continuing to rotate, and when the wrench rotates in the reverse direction, the sleeve can be withdrawn from the stud. In order to ensure that sufficient tightening torque exists between the sleeve and the stud, a stop block is arranged in the sleeve and is in contact with the end face of the stud. However, when the sleeve is withdrawn, the end face of the stud is always in a tightened state, and the end face and the thread of the stud are easily worn.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stud's assembling tool can be used for installing stud, and can avoid causing the damage to stud's terminal surface and screw thread.

As the conception, the utility model adopts the technical proposal that:

an assembly tool for a stud comprising:

the sleeve structure is provided with a stepped hole penetrating through two ends of the sleeve structure, the stepped hole comprises a large screw hole section and a small screw hole section, the aperture of the large screw hole section is larger than that of the small screw hole section, and the small screw hole section is used for being screwed with the stud;

the rolling piece is arranged in the large screw hole section, and the radial size of the rolling piece in the large screw hole section is smaller than the aperture of the large screw hole section;

and the abutting structure is screwed with the large screw hole section, and one end of the abutting structure can abut against the rolling piece.

Optionally, the pressing structure includes a pressing cylinder and a bolt, the bolt is fixed in the pressing cylinder in a penetrating manner, and one end of the bolt is screwed with the large screw hole section and can abut against the rolling member.

Optionally, the pressure cylinder and the sleeve structure are arranged oppositely, the end face of the first end of the sleeve structure is provided with a first protrusion, the end face of one end of the pressure cylinder is provided with a second protrusion, and when the pressure cylinder rotates relative to the sleeve structure, the second protrusion can be in contact with the first protrusion.

Optionally, the end face of the first end is provided with a plurality of first protrusions, the end face of one end of the abutting cylinder is provided with a plurality of second protrusions, and the first protrusions and the second protrusions are arranged in a circumferentially staggered manner in the sleeve structure.

Optionally, the first protrusion and the second protrusion are respectively provided with two protrusions, the two first protrusions are arranged oppositely, and the two second protrusions are arranged oppositely.

Optionally, the outer diameter of the sleeve structure is equal to the outer diameter of the pressing cylinder.

Optionally, the bolt includes a stud and a nut connected to each other, the middle portion of the stud is welded in the through hole of the pressure cylinder, and one end of the stud, which is far away from the nut, is screwed with the large screw hole section.

Optionally, the nut is a hexagonal nut, and the top end of the nut has a square groove.

Optionally, the rolling member is a spherical ball, and the diameter of the spherical ball is greater than or equal to the bore diameter of the small screw hole section.

Optionally, the material of the spherical balls is steel.

The utility model discloses following beneficial effect has at least:

first, the utility model provides a stud's assembling tool, through set up the rolling member in sleeve structure, can reduce the contact surface between sleeve structure and the stud, make more power pass through the rolling member and act on the central part in long screw thread section, can provide on the basis of sufficient tightening torque guaranteeing, when sleeve structure withdraws from, avoid the wearing and tearing to the screw thread and the terminal surface on the long screw thread section, the probability of the long screw thread section terminal surface of large tracts of land grinding has been reduced, make stud's assembling tool can have higher reliability.

Second, the setting of spherical ball for when pressing the structure and withdrawing from in the reverse direction, bolt and spherical ball separate earlier, make no longer have the top tight power between the long thread section of spherical ball and stud, the frictional force between the screw thread of spherical ball and sleeve structure and long thread section reduces by a wide margin, avoids the wearing and tearing of screw thread.

Thirdly, when the abutting structure exits, after the abutting cylinder rotates for a preset angle, the second bulge on the abutting cylinder is blocked by the first bulge and cannot continue to rotate, so that the tool is not disassembled for next use, the purpose of batch assembly is achieved, and the assembling efficiency is high.

Drawings

FIG. 1 is a schematic cross-sectional view of a stud assembly tool provided by an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a sleeve structure according to an embodiment of the present invention;

fig. 3 is a top view of a sleeve structure provided by an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a pressing cylinder provided in an embodiment of the present invention;

fig. 5 is a top view of a pressing cylinder provided in an embodiment of the present invention;

fig. 6 is a front view of a bolt provided by an embodiment of the present invention;

fig. 7 is a top view of a bolt provided by an embodiment of the present invention;

fig. 8 is a reference diagram illustrating a state of use of the stud assembling tool according to an embodiment of the present invention.

In the figure:

1. a sleeve structure; 11. a stepped hole; 111. a large threaded bore section; 112. a small screw hole section; 12. a first protrusion; 2. a rolling member; 3. a pressing structure; 31. a pressing cylinder; 311. a second protrusion; 312. a through hole; 32. a bolt; 321. a stud; 322. a nut; 3221. a square groove;

10. a stud; 101. a long thread segment; 102. a short thread segment; 103. a middle section; 20. and assembling the tool.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides an assembling tool for a stud bolt, which can be used for installing the stud bolt and can avoid damage to the end face and threads of the stud bolt.

As shown in fig. 1 to 8, the stud bolt assembling tool includes a sleeve structure 1, a rolling member 2 located inside the sleeve structure 1, and a pressing structure 3 connected to the sleeve structure 1.

Wherein the sleeve structure 1 has a stepped hole 11 penetrating both ends thereof, and the stepped hole 11 includes a large screw hole section 111 and a small screw hole section 112. The large threaded section 111 has a larger bore diameter than the small threaded section 112, and the small threaded section 112 is for screwing with the long threaded section 11 of the stud 10. The rolling member 2 is arranged in the large screw hole section 111, and the radial dimension of the rolling member 2 in the large screw hole section 111 is smaller than the aperture of the large screw hole section 111, so that the rolling member 2 can slide or roll in the large screw hole section 111. The pressing structure 3 is screwed with the large screw hole section 111, and one end of the pressing structure 3 can be abutted with the rolling member 2. It should be noted that the screwing in this embodiment refers to a threaded connection, for example, the pressing structure 3 is screwed in the large screw hole section 111, that is, the pressing structure 3 has an external thread, an internal thread is provided in the large screw hole section 111, and the pressing structure 3 and the large screw hole section are in threaded connection through the internal thread and the external thread.

When the assembling tool for the stud bolt provided by this embodiment is used, the long thread section 101 of the stud bolt 10 is first screwed into the small thread section 112 of the sleeve structure 1 until the long thread section 101 abuts against the rolling member 2, and at this time, the rolling member 2 is respectively contacted with the long thread section 101 and one end of the abutting structure 3. The short threaded section 102 of the stud 10 is then aligned with the threaded hole in the connection and screwed in 2-or 3-buttons, after which the abutment 3 is rotated positively by the assembly tool 20 to screw the short threaded section 102 into the threaded hole in the connection and to ensure a sufficient tightening torque. After the installation is finished, the assembling tool 20 drives the abutting structure 3 to rotate reversely, so that the abutting force between the rolling piece 2 and the long thread section 101 is reduced, and meanwhile, the screwing between the small screw hole section 112 and the short screw thread section 102 is released until the sleeve structure 1 is separated from the stud bolt 10. In the embodiment, the tightening torque is 110-120 Nm.

The stud's that this embodiment provided assembling tool, through set up rolling member 2 in sleeve structure 1, can reduce the contact surface between sleeve structure 1 and stud 10, make more power pass through the central part that rolling member 2 is used in long thread section 101, can guarantee to provide on the basis of sufficient tightening torque, when sleeve structure 1 withdraws from, avoid the wearing and tearing to the screw thread on long thread section 101 and terminal surface, the probability of the long thread section 101 terminal surface of large tracts of land grinding has been reduced, make stud's assembling tool can have higher reliability.

Alternatively, as shown in fig. 1, the pressing structure 3 may include a pressing cylinder 31 and a bolt 32. Wherein, the pressing cylinder 31 is located above the sleeve structure 1, the bolt 32 is fixed in the pressing cylinder 31 in a penetrating manner, and one end of the bolt 32 is screwed with the large screw hole section 111 and can be abutted against the rolling member 2.

For example, as shown in fig. 6 or 7, the bolt 32 may include a stud 321 and a nut 322 connected to each other. The middle part of the stud 321 is welded in the through hole 312 (shown in fig. 4) of the pressing barrel 31, one end of the stud 321 away from the nut 322 is screwed with the large screw hole section 111, and the nut 322 is located outside one end of the pressing barrel 31 away from the sleeve structure 1.

Further, as shown in fig. 7, the nut 322 is a hexagonal nut, and in this case, the nut 322 can be clamped by a wrench to rotate the bolt 32. Alternatively, the top end of the nut 322 has a square groove 3221, and the square groove 3221 can be used for inserting the assembling tool 20, so as to drive the bolt 32 to rotate.

In this embodiment, as shown in fig. 1, the pressing cylinder 31 and the sleeve structure 1 are disposed opposite to each other, and the pressing cylinder 31 and the sleeve structure 1 are disposed coaxially. As shown in fig. 3, the end surface of the first end of the sleeve structure 1 has a first protrusion 12, and as shown in fig. 5, the end surface of the end of the pressing cylinder 31 has a second protrusion 311. When the pressing cylinder 31 rotates relative to the sleeve structure 1, the second protrusion 311 can contact with the first protrusion 12, that is, the first protrusion 12 can limit the movement of the second protrusion 311. The pressing cylinder 31 can rotate relative to the sleeve structure 1 when the assembling tool 20 drives the bolt 32 to rotate, and after the pressing cylinder 31 rotates for a preset angle, the second protrusion 311 on the pressing cylinder is blocked by the first protrusion 12 and cannot continue to rotate, so that the tool is not disassembled for next use, and the purpose of batch assembly is achieved.

Further, as shown in fig. 3 and 5, the end surface of the first end may be provided with a plurality of first protrusions 12, the plurality of first protrusions 12 are uniformly and alternately arranged along the circumferential direction of the sleeve structure 1, the end surface of one end of the pressing cylinder 31 may also be provided with a plurality of second protrusions 311, and the plurality of second protrusions 311 are uniformly and circumferentially arranged along the pressing cylinder 31. Moreover, the first protrusions 12 and the second protrusions 311 are arranged in a staggered manner in the circumferential direction of the sleeve structure 1, that is, an orthographic projection of each second protrusion 311 on the sleeve structure 1 can fall between two adjacent first protrusions 12, and only one orthographic projection of the second protrusion 311 exists between any two adjacent first protrusions 12.

Further, in this embodiment, two first protrusions 12 and two second protrusions 311 are respectively disposed, the two first protrusions 12 are disposed oppositely, and the two second protrusions 311 are disposed oppositely. When the pressing cylinder 31 is not rotated, one of the second protrusions 311 can contact one of the first protrusions 12, and after the pressing cylinder 31 is rotated by 180 degrees, the one of the second protrusions 311 can contact the other one of the first protrusions 12 to be blocked by the other one of the first protrusions 12, and at this time, when the pressing cylinder 31 is continuously rotated, the pressing cylinder 31 drives the sleeve structure 1 to rotate through the contacted first protrusions 12 and the second protrusions 311, so as to release the screwing of the sleeve structure 1 and the long thread section 101.

Optionally, the outer diameter of the sleeve structure 1 is equal to the outer diameter of the pressing cylinder 31, that is, the sleeve structure 1 and the pressing cylinder 31 have the same shape and size, which facilitates the overlapping of the first protrusion 12 on the pressing cylinder 31 and also facilitates the overlapping of the second protrusion 311 on the sleeve structure 1.

For example, the rolling member 2 in the present embodiment may be a ball-shaped ball, and the diameter of the ball-shaped ball is greater than or equal to the bore diameter of the small screw hole section 112 to prevent the ball-shaped ball from falling into the small screw hole section 112. Optionally, in this embodiment, the material of the spherical balls is steel or other metal materials, so that the spherical balls have strong hardness, which ensures the tightening torque applied to the stud 10.

Alternatively, in this embodiment, the stud 10 has an overall length of 65 millimeters and the stud 10 has a diameter of 16 millimeters. The long thread section 101 is a fine thread, the length is 30 mm, and the thread pitch is 1.5 mm. The length of the intermediate section 103 is 18 mm. The short thread segment 102 is coarse, 17 mm in length and 2 mm in pitch. The overall length of the stud assembly tool is 116 mm and the outer diameter is 38 mm. The sleeve structure 1 has an overall length of 60 mm and the height of the first protrusions 12 is 5 mm, and the first protrusions 12 may be cubic. The total length of the pressing cylinder 31 is 35 mm. The rolling elements 2 have a diameter of 16 mm. The length of the bolt 32 is 50 mm.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An assembly tool for a stud, comprising:

the sleeve structure (1) is provided with a stepped hole (11) penetrating through two ends of the sleeve structure (1), the stepped hole (11) comprises a large screw hole section (111) and a small screw hole section (112), the hole diameter of the large screw hole section (111) is larger than that of the small screw hole section (112), and the small screw hole section (112) is used for being screwed with a double-end stud;

the rolling piece (2) is arranged in the large threaded hole section (111), and the size of the rolling piece (2) in the radial direction of the large threaded hole section (111) is smaller than the aperture of the large threaded hole section (111);

and the abutting structure (3) is screwed with the large screw hole section (111), and one end of the abutting structure (3) can abut against the rolling piece (2).

2. The assembling tool for the stud bolt according to claim 1, wherein the abutting structure (3) comprises an abutting cylinder (31) and a bolt (32), the bolt (32) is fixedly arranged in the abutting cylinder (31) in a penetrating manner, and one end of the bolt (32) is screwed with the large screw hole section (111) and can abut against the rolling member (2).

3. The tool for assembling a stud according to claim 2, wherein the abutment cylinder (31) is arranged opposite the sleeve structure (1) and the end face of the first end of the sleeve structure (1) has a first projection (12), and the end face of the end of the abutment cylinder (31) has a second projection (311), the second projection (311) being capable of contacting the first projection (12) when the abutment cylinder (31) is rotated relative to the sleeve structure (1).

4. The tool for assembling a stud according to claim 3, characterised in that the end face of the first end is provided with a plurality of first projections (12), the end face of the end of the pressure cylinder (31) is provided with a plurality of second projections (311), the first projections (12) and the second projections (311) being arranged in a staggered manner in the circumferential direction of the sleeve structure (1).

5. The tool for assembling a stud according to claim 3, wherein there are two first projections (12) and two second projections (311), respectively, and wherein the two first projections (12) are disposed opposite to each other and the two second projections (311) are disposed opposite to each other.

6. The tool for assembling a stud according to claim 3, characterised in that the external diameter of the sleeve structure (1) is equal to the external diameter of the pressing cylinder (31).

7. The stud assembly tool according to any one of claims 2 to 6, wherein the bolt (32) comprises a stud (321) and a nut (322) which are connected to each other, a middle portion of the stud (321) is welded into the through hole (312) of the pressure barrel (31), and an end of the stud (321) remote from the nut (322) is screwed with the large threaded section (111).

8. The tool for assembling a stud according to claim 7, characterized in that the nut (322) is a hexagonal nut and the top end of the nut (322) has a square groove (3221).

9. The tool according to any one of claims 1 to 6, characterised in that the rolling elements (2) are spherical balls and the diameter of the spherical balls is greater than or equal to the diameter of the small threaded section (112).

10. The stud assembly tool of claim 9, wherein the spherical balls are steel.