Positioning and clamping device for bolt tightening experiment and bolt tightening experiment system

Abstract

The utility model discloses a positioning and clamping device for bolt tightening experiment and a bolt tightening experiment system, the positioning and clamping device comprises a clamp, a first positioning piece and a second positioning piece, the clamp is used for clamping and fixing a connected piece, the first positioning piece is fixedly arranged on the clamp, and the second positioning piece is arranged on the first positioning piece. And the second positioning piece is suitable for abutting against and supporting the connected piece, so that the central axis of the threaded hole of the connected piece is parallel to the central axis of the driving part of the tightening machine. Therefore, in the adjustment process of the connected piece, the second positioning piece can provide support for adjustment of the connected piece, an operator can conveniently adjust the connected piece with one hand and then drive the clamp to clamp and fix the connected piece with the other hand, single-person operation is achieved, and meanwhile, when a tightening test needs to be conducted on the same connected piece in the same group, the clamp can be used for clamping and fixing the connected piece. And the second positioning piece can be kept immobile, so that the connected piece can be quickly adjusted, the test efficiency can be improved, and the experiment period can be shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt tightening experiments, in particular to a positioning clamping device used for bolt tightening experiments and a bolt tightening experiment system. Background Art

[0002] During the bolt tightening test, the driving part of the tightening machine, the bolt and the threaded hole of the connected part need to be kept in the same straight line. At present, the tightening machine is usually suspended vertically to the horizontal plane. Before conducting the test, the connected part needs to be fixed on the clamp below the tightening machine, and the position of the connected part is adjusted so that the center axis of the threaded hole of the connected part and the driving part of the tightening machine are in the same straight line, that is, the center axis of the threaded hole of the connected part is parallel to the center axis of the driving part of the tightening machine. Then, the bolt is placed in the threaded hole of the connected part, and the bolt is driven by the driving part of the tightening machine to perform a bolt tightening experiment with the threaded hole of the connected part.

[0003] However, since most of the connected parts (such as subframes, steering knuckles, etc.) are heavy, both hands are needed to stabilize the threaded holes of the connected parts. One person cannot tighten the clamp. The fixation of the connected parts requires the coordinated operation of two people, so it is impossible for a single person to operate independently. At the same time, the bolt tightening test needs to be repeated no less than 6 times for the same batch of the same connected parts. If two people are required to adjust and install the connected parts each time the connected parts are replaced, the operation is more complicated, which leads to an extension of the test cycle. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first purpose of the utility model is to propose a positioning and clamping device for bolt tightening experiments, through the coordinated use of a first positioning member and a second positioning member, during the adjustment process of the connected member, the second positioning member is used to abut and support the connected member, so as to provide support for the adjustment of the connected member, so that the operator can adjust the central axis of the threaded hole of the connected member to be parallel to the central axis of the driving part of the tightening machine with one hand, and then drive the clamp to clamp the connected member with the other hand, so as to realize single-person operation. At the same time, when it is necessary to perform a tightening test on the same group of connected members, the second positioning member can be kept stationary to realize rapid adjustment of the connected member, which is conducive to improving the test efficiency and shortening the experimental cycle.

[0005] The second purpose of the utility model is to provide a bolt tightening test system.

[0006] To achieve the above-mentioned purpose, the first aspect of the utility model embodiment proposes a positioning and clamping device for a bolt tightening test, the positioning and clamping device is used to install the connected parts, the bolts are suitable for performing bolt tightening tests with the connected parts through a tightening machine, the positioning and clamping device includes: a clamp, a first positioning member and a second positioning member, the clamp is used to clamp and fix the connected parts, the first positioning member is fixed to the clamp, the second positioning member is arranged on the first positioning member, and the second positioning member is suitable for abutting and supporting the connected parts so that the central axis of the threaded hole of the connected parts is parallel to the central axis of the driving part of the tightening machine.

[0007] According to the positioning and clamping device of the embodiment of the utility model, through the coordinated use of the first positioning member and the second positioning member, during the adjustment process of the connected member, the second positioning member is used to abut and support the connected member, thereby providing support for the adjustment of the connected member, which is convenient for the operator to adjust the central axis of the threaded hole of the connected member to be parallel to the central axis of the driving part of the tightening machine with one hand, and then drive the clamp to clamp and fix the connected member with the other hand, thus realizing single-person operation. At the same time, when it is necessary to perform a tightening test on the same group of identical connected members, the second positioning member can be kept stationary to realize rapid adjustment of the connected members, which is beneficial to improving test efficiency and shortening the experimental cycle.

[0008] After a tightening test is performed on a connected part, when the same connected parts in the same group are replaced for tightening test, the device remains stationary, and the threaded holes of the connected parts in the same group can be quickly leveled, thereby improving work efficiency.

[0009] In some examples of the present invention, the second positioning member has a positioning hole and an abutment support portion, the shape of the positioning hole matches the shape of the first positioning member, the positioning hole is suitable for cooperating with the first positioning member, and the abutment support portion is suitable for abutting and supporting the connected member.

[0010] In some examples of the present invention, the second positioning member includes a first positioning portion and a second positioning portion, the first positioning portion and the second positioning portion are fixedly connected, the first positioning portion has a positioning hole, the top wall of the second positioning portion is configured to abut the support portion, the positioning hole is suitable for cooperating with the first positioning member and the first positioning portion abuts the clamp, and the top wall of the second positioning portion is suitable for abutting with the bottom wall of the connected member.

[0011] In some examples of the present invention, there are multiple positioning holes, and the multiple positioning holes are arranged in sequence and at intervals along the height direction of the first positioning portion.

[0012] In some examples of the present invention, along the height direction of the first positioning portion, the distance between any two adjacent positioning holes is D, satisfying the relationship: 6mm<D<20mm.

[0013] In some examples of the present invention, there are multiple first positioning members.

[0014] In some examples of the present invention, the first positioning member is configured as any one of a cylindrical positioning pin, a rectangular positioning pin, or an L-shaped positioning pin.

[0015] In some examples of the present invention, if the first positioning member is a cylindrical positioning pin, the height of the cylindrical positioning pin is H, satisfying the relationship: 10 mm < D < 20 mm;

[0016] The bottom radius of the cylindrical locating pin is R, which satisfies the relationship: 2mm<D<5mm.

[0017] In some examples of the utility model, the clamp includes a fixed part and a movable part, the movable part is movable relative to the fixed part, the movable part and the fixed part jointly define an installation space, the installation space is used to place the connected part, the first positioning part is fixedly installed at one end of the fixed part away from the movable part, and the abutment support portion of the second positioning part extends into the installation space to abut and assemble with the connected part.

[0018] In order to achieve the above-mentioned object, the second embodiment of the utility model proposes a bolt tightening test system, comprising:

[0019] A positioning clamping device, which is the positioning clamping device used for bolt tightening experiment in the embodiment of the first aspect;

[0020] Tightening machine, the tightening machine is used to drive bolts and connected parts to carry out bolt tightening experiments.

[0021] According to the bolt tightening test system of the embodiment of the utility model, by providing the above-mentioned positioning and clamping device for bolt tightening test, through the coordinated use of the first positioning member and the second positioning member, during the adjustment process of the connected member, the second positioning member is used to abut and support the connected member, so as to provide support for the adjustment of the connected member, so that the operator can adjust the central axis of the threaded hole of the connected member to be parallel to the central axis of the driving part of the tightening machine with one hand, and then drive the clamp to clamp and fix the connected member with the other hand, thus realizing single-person operation. At the same time, when it is necessary to perform a tightening test on the same group of identical connected members, the second positioning member can be kept stationary to realize rapid adjustment of the connected members, which is beneficial to improving test efficiency and shortening the experimental cycle.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1It is a schematic diagram of a positioning and clamping device according to an embodiment of the utility model;

[0025] Figure 2 is a schematic diagram of a positioning and clamping device according to another embodiment of the utility model;

[0026] Figure 3 is a schematic diagram of a second positioning member according to an embodiment of the utility model;

[0027] Figure 4 is a schematic diagram of a first positioning member according to an embodiment of the utility model;

[0028] Figure 5 is a schematic diagram of a first positioning member according to another embodiment of the utility model;

[0029] Figure 6 It is a schematic diagram of a first positioning member according to another embodiment of the utility model.

[0030] Reference numerals:

[0031] Positioning clamping device 100;

[0032] Fixture 1; fixed part 11; movable part 12; installation space 13;

[0033] A first positioning member 2;

[0034] Second positioning member 3; positioning hole 31; abutting support portion 32; first positioning portion 33; second positioning portion 34;

[0035] Connected member 200; threaded hole 201. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] The following describes a positioning clamping device 100 for a bolt tightening test and a bolt tightening test system according to an embodiment of the present invention with reference to the accompanying drawings.

[0038] like Figure 1-Figure 6As shown, the positioning and clamping device 100 for bolt tightening experiment according to the embodiment of the first aspect of the utility model includes: a clamp 1, a first positioning member 2 and a second positioning member 3, the clamp 1 is used to clamp and fix the connected member 200, the first positioning member 2 is fixed to the clamp 1, the second positioning member 3 is arranged on the first positioning member 2, and the second positioning member 3 is suitable for abutting and supporting the connected member 200 so that the central axis of the threaded hole 201 of the connected member 200 is parallel to the central axis of the driving part of the tightening machine.

[0039] Specifically, the positioning and clamping device 100 is used to install the connected part 200, and the driving part of the tightening machine is used to drive the bolt to perform a bolt tightening test with the threaded hole 201 of the connected part 200. It should be noted that during the bolt tightening test, the driving part of the tightening machine, the bolt and the threaded hole 201 of the connected part 200 need to be kept in the same straight line. Therefore, before conducting the experiment, the connected part 200 needs to be adjusted so that the center axis of the threaded hole 201 of the connected part 200 is parallel to the center axis of the driving part of the tightening machine. In this application, the tightening machine is suspended perpendicular to the horizontal plane as an example, so the connected part 200 needs to be adjusted so that the center axis of the threaded hole 201 of the connected part 200 is perpendicular to the horizontal plane.

[0040] However, since most of the connected parts 200 (such as subframes, steering knuckles, etc.) are heavy, both hands are required to stabilize the threaded holes 201 of the connected parts 200. One person cannot tighten the clamp 1. The fixation of the connected parts 200 requires the coordinated operation of two people, so it is impossible for a single person to operate independently. At the same time, the bolt tightening test needs to be repeated no less than 6 times for the same batch of the same connected parts 200. If two people are required to adjust and install the connected parts 200 each time the connected parts 200 are replaced, the operation is more complicated, which leads to an extension of the test cycle.

[0041] Based on this, the present application proposes a positioning clamping device 100 for bolt tightening experiments, the positioning clamping device 100 is located below the tightening machine, and the positioning clamping device 100 includes a fixture 1, a first positioning member 2 and a second positioning member 3. The first positioning member 2 and the second positioning member 3 can be made of but not limited to aluminum alloy, stainless steel, tool steel, copper alloy, nickel alloy, titanium alloy, etc. The first positioning member 2 is fixedly installed on the fixture 1, and the fixing installation method includes but is not limited to welding, etc. Further, as Figure 1 and Figure 2As shown, the second positioning member 3 is arranged on the first positioning member 2, and the second positioning member 3 is used to abut and support the connected member 200. With such arrangement, during the adjustment process of the connected member 200, the second positioning member 3 can provide support for the adjustment of the connected member 200, which is convenient for the operator to perform one-handed operation to adjust the central axis of the threaded hole 201 of the connected member 200 to be parallel to the central axis of the driving part of the tightening machine. Subsequently, the operator can adjust the clamp 1 with the other hand to clamp and fix the connected member 200, thereby realizing the installation of the connected member 200 by a single person, without the need for two people to cooperate in the installation.

[0042] Furthermore, after a bolt tightening test is performed on a connected component 200, if it is necessary to replace the same connected component 200 in the same group for tightening test, the second positioning component 3 can be kept in place, and a single person can replace the connected component 200 for adjustment and fixation, so as to achieve rapid adjustment and replacement of the same connected component 200 in the same group. Such a setting is conducive to improving test efficiency and shortening the experimental cycle.

[0043] According to the positioning and clamping device 100 of the embodiment of the utility model, through the coordinated use of the first positioning member 2 and the second positioning member 3, during the adjustment process of the connected member 200, the second positioning member 3 is used to abut and support the connected member 200, so as to provide support for the adjustment of the connected member 200, so that the operator can adjust the central axis of the threaded hole 201 of the connected member 200 to be parallel to the central axis of the driving part of the tightening machine with one hand, and then drive the clamp 1 with the other hand to clamp and fix the connected member 200, thereby realizing single-person operation. At the same time, when it is necessary to perform a tightening test on the same group of identical connected members 200, the second positioning member 3 can be kept stationary to realize rapid adjustment of the connected member 200, which is beneficial to improving test efficiency and shortening the experimental cycle.

[0044] In some embodiments of the present invention, Figure 3 As shown, the second positioning member 3 has a positioning hole 31 and an abutting support portion 32 . The shape of the positioning hole 31 matches the shape of the first positioning member 2 . The positioning hole 31 is suitable for being assembled with the first positioning member 2 . The abutting support portion 32 is suitable for abutting and supporting the connected member 200 .

[0045] Specifically, Figure 1-Figure 3As shown, the second positioning member 3 is assembled with the first positioning member 2 through the positioning hole 31, wherein the shape of the first positioning member 2 matches the shape of the positioning hole 31, so that the first positioning member 2 can be inserted into the positioning hole 31, thereby realizing the positioning of the second positioning member 3 by the first positioning member 2, and facilitating the disassembly and assembly of the second positioning member 3 and the first positioning member 2. Furthermore, during the adjustment process of the connected member 200, the abutting support portion 32 of the second positioning member 3 abuts and supports the connected member 200, thereby providing support for the adjustment of the connected member 200, which is convenient for the operator to perform one-handed operation. Subsequently, the operator can adjust the clamp 1 with the other hand to clamp and fix the connected member 200, that is, the installation of the connected member 200 by a single person is realized, and the installation does not require the cooperation of two people. And when it is necessary to perform a tightening test on the same group of connected members 200, it can be ensured that the abutting support portion 32 of the second positioning member 3 is in the same position, so as to facilitate the rapid adjustment of the connected member 200, which is conducive to improving the test efficiency and shortening the experimental cycle.

[0046] In some embodiments of the present invention, Figure 3 As shown, the second positioning member 3 includes a first positioning portion 33 and a second positioning portion 34, the first positioning portion 33 and the second positioning portion 34 are fixedly connected, the first positioning portion 33 has a positioning hole 31, the top wall of the second positioning portion 34 is configured to abut the support portion 32, the positioning hole 31 is suitable for cooperating with the first positioning member 2 and the first positioning portion 33 abuts the clamp 1, and the top wall of the second positioning portion 34 is suitable for abutting with the bottom wall of the connected member 200.

[0047] Specifically, Figure 3 As shown, the second positioning member 3 can be constructed as a first positioning portion 33 and a second positioning portion 34 connected at a 90° angle. Optionally, the first positioning portion 33 and the second positioning portion 34 can be constructed as a plate-like structure, wherein the length of the first positioning portion 33 and the second positioning portion 34 can vary in the range of 100mm to 200mm, the width can vary in the range of 30mm to 80mm, and the thickness can vary in the range of 3mm to 8mm. Furthermore, the first positioning portion 33 has a positioning hole 31, and the top wall of the second positioning portion 34 is configured to abut the support portion 32. When the connected member 200 needs to be adjusted, as shown in FIG. Figure 1 and Figure 2As shown, the operator holds one end of the connected member 200 with one hand and the first positioning portion 33 of the second positioning member 3 with the other hand, and places the other end of the connected member 200 on the second positioning member 3 so that the top wall of the second positioning portion 34 abuts against the bottom wall of the connected member 200, and then adjusts the connected member 200. When the center axis of the threaded hole 201 of the connected member 200 is adjusted to be parallel to the center axis of the driving part of the tightening machine, the first positioning member 2 is inserted into the positioning hole 31 of the first positioning portion 33, and the first positioning portion 33 abuts against the clamp 1, thereby fixing the second positioning member 3, and then supports the adjusted connected member 200 with one hand and adjusts the clamp 1 with the other hand to clamp and fix the connected member 200, thereby realizing the single-person operation installation of the connected member 200.

[0048] Furthermore, after a bolt tightening test is performed on a connected part 200, if it is necessary to replace the same connected part 200 in the same group for tightening test, the second connecting part is ensured to be stationary, and the operator holds one end of the connected part 200 with one hand, and the other end of the connected part 200 is directly placed on the second positioning part 3, and the top wall of the second positioning part 34 is abutted against the bottom wall of the connected part 200. At the same time, the connected part 200 is adjusted so that the central axis of the threaded hole 201 of the connected part 200 is parallel to the central axis of the driving part of the tightening machine. Such an arrangement can not only realize the adjustment and fixation of the connected part 200 by one person, but also make the adjustment and replacement simple and quick, which is conducive to improving the test efficiency and shortening the experimental cycle.

[0049] In some embodiments of the present invention, Figure 3 As shown, there are multiple positioning holes 31, and the multiple positioning holes 31 are sequentially arranged at intervals along the height direction of the first positioning portion 33. That is to say, in order to match the connected parts 200 of different sizes, multiple positioning holes 31 are sequentially arranged at intervals along the height direction of the first positioning portion 33, so that the first positioning member 2 can be assembled with the appropriate positioning hole 31 to prevent the connected part 200 from being too high or too low. For example, if the connected part 200 is large in size, the first positioning member 2 can be assembled with the positioning hole 31 located on the upper side of the height direction of the first positioning portion 33 to reduce the height of the connected part 200 extending out of the clamp 1 to prevent the connected part 200 from being too high. If the connected part 200 is small in size, the first positioning member 2 can be assembled with the positioning hole 31 located on the lower side of the height direction of the first positioning portion 33 to increase the height of the connected part 200 extending out of the clamp 1 to prevent the connected part 200 from being too low.

[0050] In some embodiments of the utility model, along the height direction of the first positioning portion 33, the distance between any two adjacent positioning holes 31 is D, satisfying the relationship: 6mm<D<20mm. That is to say, along the height direction of the first positioning portion 33, two positioning holes 31 are set at a certain vertical distance. For example, along the height direction of the first positioning portion 33, the distance between two adjacent positioning holes 31 can be 8mm, 10mm, 15mm, 18mm, etc., which is specifically set according to the size of the connected component 200, and no specific restrictions are made here. Such a setting meets the positioning requirements of different connected components 200, and there is no need to frequently replace the second positioning component 3, thereby improving the test efficiency.

[0051] In some embodiments of the present invention, there are multiple first positioning members 2. That is, there can be multiple first positioning members 2. For example, the number of first positioning members 2 can be 2, 3, 4, etc., which is set according to actual needs and is not specifically limited here. Figure 1 and Figure 2 As shown, two first positioning members 2 are fixedly mounted on the fixture 1. Assume that the two first positioning members 2 are arranged horizontally. Figure 3 As shown, along the width direction of the first positioning portion 33, the second positioning member 3 has two positioning holes 31, and the spacing between the two positioning holes 31 is equal to the spacing between the two first positioning members 2. The two first positioning members 2 can improve the connection stability between the first positioning member 2 and the second positioning member 3 and prevent the second positioning member 3 from swinging, thereby improving the stability of the connected member 200 during adjustment.

[0052] In some embodiments of the present invention, Figure 4-Figure 6 As shown, the first positioning member 2 is constructed as any one of a cylindrical positioning pin, a rectangular positioning pin or an L-shaped positioning pin. That is to say, the first positioning member 2 can be constructed as a cylindrical positioning pin, a rectangular positioning pin, or an L-shaped positioning pin, and the specific selection is based on actual needs, and no specific restrictions are made here. It can be understood that when the first positioning member 2 is constructed as a cylindrical positioning pin, a rectangular positioning pin or an L-shaped positioning pin, the shape of the positioning hole 31 of the second positioning member 3 is correspondingly set to a circular hole, a square hole or an L-shaped hole, that is, the opening shape and size of the positioning hole 31 of the second positioning member 3 must be consistent with the first positioning member 2. Such a setting facilitates the mutual assembly of the first positioning member 2 and the second positioning member 3.

[0053] In some embodiments of the present invention, if the first positioning member 2 is a cylindrical positioning pin, the height of the cylindrical positioning pin is H, satisfying the relationship: 10mm<D<20mm; the bottom radius of the cylindrical positioning pin is R, satisfying the relationship: 2mm<D<5mm. Specifically, when the first positioning member 2 is constructed as a cylindrical positioning pin, the height of the cylindrical positioning pin can vary in the range of 10mm to 20mm, and the bottom radius can vary in the range of 2mm to 5mm. For example, the height of the cylindrical positioning pin can be 12mm, 15mm, 18mm, etc., and the bottom radius of the cylindrical positioning pin can be 2.5mm, 3mm, 4mm, etc., which are set according to actual needs and are not specifically limited here. It should be noted that, in some embodiments of the present application, the thickness of the second positioning portion 34 can vary in the range of 3mm to 8mm, so the height of the cylindrical positioning pin is greater than the thickness of the second positioning portion 34, so that the cylindrical positioning pin can extend out of the positioning hole 31, which is beneficial to improve the connection stability between the first positioning member 2 and the second positioning member 3, thereby improving the stability of the connected member 200 during adjustment.

[0054] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the clamp 1 includes a fixed member 11 and a movable member 12, the movable member 12 is movable relative to the fixed member 11, the movable member 12 and the fixed member 11 jointly define an installation space 13, the installation space 13 is used to place the connected member 200, the first positioning member 2 is fixedly installed at one end of the fixed member 11 away from the movable member 12, and the abutment support portion 32 of the second positioning member 3 extends into the installation space 13 to abut and assemble with the connected member 200.

[0055] Specifically, the clamp 1 includes a fixed member 11 and a movable member 12. The movable member 12 can move toward or away from the fixed member 11. When the connected member 200 needs to be adjusted, Figure 1 and Figure 2 As shown, the operator holds one end of the connected member 200 with one hand and the first positioning portion 33 of the second positioning member 3 with the other hand, and places the other end of the connected member 200 on the second positioning member 3 so that the abutment support portion 32 of the second positioning portion 34 abuts against the bottom wall of the connected member 200, and then places the connected member 200 in the installation space 13, adjusts the connected member 200, and when the center axis of the threaded hole 201 of the connected member 200 is adjusted to be parallel to the center axis of the driving portion of the tightening machine, inserts the first positioning member 2 into the positioning hole 31 of the first positioning portion 33, and makes the first positioning portion 33 abut against the clamp 1, thereby fixing the second positioning member 3, and then supports the adjusted connected member 200 with one hand, and drives the movable member 12 to move toward the fixed member 11 with the other hand to clamp and fix the connected member 200, thereby realizing the single-person operation installation of the connected member 200.

[0056] According to the bolt tightening test system of the second embodiment of the utility model, it includes: a positioning clamping device 100 and a tightening machine, wherein the positioning clamping device 100 is the positioning clamping device 100 for bolt tightening test in the first embodiment, and the tightening machine is used to drive the bolt to perform the bolt tightening test with the connected member 200. Specifically, the positioning clamping device 100 is used to adjust and fix the connected member 200 so that the central axis of the threaded hole 201 of the connected member 200 is adjusted to be parallel to the central axis of the driving part of the tightening machine, and then the bolt is driven by the driving part of the tightening machine to perform the bolt tightening test with the threaded hole 201 of the connected member 200.

[0057] According to the bolt tightening test system of the embodiment of the utility model, the positioning and clamping device 100 for bolt tightening test is provided. Through the coordinated use of the first positioning member 2 and the second positioning member 3, during the adjustment process of the connected member 200, the second positioning member 3 is used to abut and support the connected member 200, so as to provide support for the adjustment of the connected member 200, so that the operator can adjust the central axis of the threaded hole 201 of the connected member 200 to be parallel to the central axis of the driving part of the tightening machine with one hand, and then drive the clamp 1 with the other hand to clamp and fix the connected member 200, thus realizing single-person operation. At the same time, when it is necessary to perform a tightening test on the same group of the same connected members 200, the second positioning member 3 can be kept stationary to realize rapid adjustment of the connected member 200, which is beneficial to improving the test efficiency and shortening the experimental cycle.

[0058] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A positioning clamping device for bolt tightening experiment, characterized in that: The positioning and clamping device is used to install the connected part, and the bolt is suitable for performing a bolt tightening test with the connected part through a tightening machine. The positioning and clamping device includes: a clamp, a first positioning member and a second positioning member. The clamp is used to clamp and fix the connected part, the first positioning member is fixed to the clamp, the second positioning member is arranged on the first positioning member, and the second positioning member is suitable for abutting and supporting the connected part so that the central axis of the threaded hole of the connected part is parallel to the central axis of the driving part of the tightening machine.

2. The positioning clamping device according to claim 1, characterized in that: The second positioning member has a positioning hole and an abutting support portion. The shape of the positioning hole matches the shape of the first positioning member. The positioning hole is suitable for being assembled with the first positioning member. The abutting support portion is suitable for abutting and supporting the connected member.

3. The positioning clamping device according to claim 2, characterized in that: The second positioning member includes a first positioning portion and a second positioning portion, the first positioning portion and the second positioning portion are fixedly connected, the first positioning portion has the positioning hole, the top wall of the second positioning portion is configured as the abutment support portion, the positioning hole is suitable for cooperating with the first positioning member and the first positioning portion abuts with the clamp, and the top wall of the second positioning portion is suitable for abutting with the bottom wall of the connected member.

4. The positioning clamping device according to claim 3, characterized in that: There are a plurality of positioning holes, and the plurality of positioning holes are sequentially spaced apart from each other along a height direction of the first positioning portion.

5. The positioning clamping device according to claim 4, characterized in that: Along the height direction of the first positioning portion, the distance between any two adjacent positioning holes is D, satisfying the relationship: 6mm<D<20mm.

6. The positioning clamping device according to claim 2, characterized in that: There are multiple first positioning members.

7. The positioning clamping device according to claim 2, characterized in that: The first positioning member is configured as any one of a cylindrical positioning pin, a rectangular positioning pin or an L-shaped positioning pin.

8. The positioning clamping device according to claim 7, characterized in that: If the first positioning member is a cylindrical positioning pin, the height of the cylindrical positioning pin is H, satisfying the relationship: 10 mm < D < 20 mm; The bottom radius of the cylindrical positioning pin is R, which satisfies the relationship: 2mm<D<5mm.

9. The positioning clamping device according to claim 2, characterized in that: The clamp includes a fixed part and a movable part, the movable part is movable relative to the fixed part, the movable part and the fixed part jointly define an installation space, the installation space is used to place the connected part, the first positioning part is fixedly installed at one end of the fixed part away from the movable part, and the abutment support part of the second positioning part extends into the installation space to abut and assemble with the connected part.

10. A bolt tightening test system, characterized in that: include: A positioning clamping device, wherein the positioning clamping device is a positioning clamping device for a bolt tightening experiment according to any one of claims 1 to 9; A tightening machine is used to drive the bolts and the connected parts to perform a bolt tightening test.

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