Tool for bolt anti-slip test

Abstract

The utility model provides a tool for a bolt anti-slip test, and belongs to the technical field of fastener processing. The device comprises a bottom plate, a test bolt, a gasket and a limiting structure, the bottom plate is vertically provided with a mounting plate, the mounting plate is provided with a plurality of first bolt mounting holes in parallel, the test bolt is in threaded connection in one of the first bolt mounting holes, the gasket is provided with a kidney-shaped hole along the length direction, and the kidney-shaped hole is in threaded connection with the gasket. The gasket is vertically installed between the detection bolt and the installation plate, and the limiting structure can keep the gasket in a vertical state when the gasket is installed. According to the utility model, the gasket and the test bolt can be quickly and correctly mounted on the mounting plate, a universal testing machine can conveniently apply pressure in the vertical direction to the gasket to detect the anti-sliding capability of the test bolt, the structure is simple, and safety and reliability are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of fastener processing and relates to a tool for bolt anti-slip testing. Background Art

[0002] During the assembly process of the automobile, many parts are fixed and connected by bolts. The stress between the fixing bolts and the connection structure is transmitted through friction. Since the vehicle is bumped and vibrated during actual driving, the fixing bolts will be subject to lateral loads. If the anti-slip ability of the bolts does not meet the design requirements, the safety and stability of the connection nodes will be affected. Therefore, it is necessary to test the anti-slip ability of the fixing bolts before use.

[0003] At present, the anti-slip ability of bolts is tested by connecting two fixed panels and two sliding plates with bolts and force sensors in advance, and tightening the bolts by applying the specified force value according to the standard. The operation process is relatively cumbersome, and because the bolts and sliding plates are fixedly connected according to the actual assembly without safety margin, there are certain safety hazards when applying reverse tension to the two sliding plates. Utility Model Content

[0004] The purpose of the utility model is to address the above-mentioned problems in the existing technology and to propose a tool for bolt anti-slip testing, which can quickly and correctly install gaskets and test bolts on a mounting plate, and facilitate a universal testing machine to apply vertical pressure to the gasket to detect the anti-slip ability of the test bolt. The utility model has a simple structure and is safe and reliable.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A tool for bolt anti-slip test, comprising: a bottom plate, a mounting plate vertically arranged on the bottom plate, and a plurality of first bolt mounting holes parallelly opened on the mounting plate;

[0007] a test bolt, the test bolt being threadedly connected in one of the first bolt mounting holes;

[0008] A gasket is provided with a waist-shaped hole along the length direction, and the gasket is vertically installed between the test bolt and the mounting plate.

[0009] A limiting structure is arranged on the mounting plate, and the limiting structure can keep the gasket in a vertical state when it is installed.

[0010] Preferably, a plurality of support plates are provided between both sides of the mounting plate and the bottom plate.

[0011] Preferably, the limiting structure comprises:

[0012] Two second bolt mounting holes, the two second bolt mounting holes are arranged in parallel below the first bolt mounting hole;

[0013] Two step bolts, the two step bolts are respectively threadedly connected in the two second bolt mounting holes;

[0014] The limiting plate is installed on the two step bolts. When the limiting plate is close to the mounting plate, the lower side of the gasket contacts the upper side of the limiting plate.

[0015] Preferably, the limiting plate has two first through holes horizontally formed thereon, the two first through holes correspond to two step bolts one by one, the step bolts are inserted into the corresponding first through holes, and the limiting plate can move horizontally along the length direction of the step bolts.

[0016] Preferably, both ends of the limiting plate extend out of two sides of the mounting plate.

[0017] Preferably, a slide slot hole is horizontally opened on the limit plate, and the two step bolts are inserted into the slide slot holes. The limit plate can move horizontally along the length direction of the step bolts and can also move horizontally along the width direction of the mounting plate.

[0018] Preferably, an operating rod is provided on a side of the limiting plate away from the mounting plate.

[0019] Preferably, an extension plate is respectively provided at both ends of the limit plate, a fixing plate is provided on the extension plate, the mounting plate is located between the limit plate and the fixing plate, a second through hole is opened on the fixing plate, a sliding rod is inserted into the second through hole, one end of the sliding rod is fixedly connected to the mounting plate, and the other end is provided with a top plate, a compression spring is sleeved on the sliding rod located between the fixing plate and the mounting plate, under the action of the compression spring, the limit plate and the mounting plate are fitted together, and a pushing structure is provided on the limit plate that can separate the limit plate from the mounting plate.

[0020] Preferably, the push structure comprises:

[0021] A blind hole, wherein the blind hole is provided on a side surface of the limiting plate close to the mounting plate;

[0022] A butterfly bolt is threadedly connected to the limit plate, the inner end of the butterfly bolt extends into the blind hole and a clamping block is rotatably arranged at the end.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] 1. Insert the test bolt into the waist round hole of the matching gasket, and then install the test bolt thread into the first bolt mounting hole on the mounting plate. In the initial state, the limit plate is horizontally close to the side of the mounting plate close to the gasket, so that the lower side of the gasket is close to the upper side of the limit plate to avoid the gasket from deflecting and displacing when tightening the test bolt, which affects the subsequent pressure application work;

[0025] 2. The upper side of the gasket extends out of the upper side of the mounting plate, which is convenient for the universal testing machine to press the gasket downward. At the same time, the waist round hole of the gasket is in a vertical state. When the universal testing machine presses the gasket downward, since there is a margin for the waist round hole on the gasket to move up and down, when the test bolt and the gasket slip relatively, the anti-slip system of the test bolt can be obtained;

[0026] 3. Since the test bolt and gasket are relatively fixed, during the extreme pressure process, the relative displacement of the test bolt and gasket can prevent the test bolt from shearing and popping outward, thereby ensuring the safety of the test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 yes Figure 1 Sectional view at AA in the middle;

[0029] Figure 3 It is a schematic diagram of the utility model installed on a universal testing machine;

[0030] Figure 4 is a structural diagram of Embodiment 2;

[0031] Figure 5 yes Figure 4 Sectional view at the middle BB;

[0032] Figure 6 is a schematic structural diagram of Embodiment 3;

[0033] Figure 7 yes Figure 6 Cross-sectional view at CC.

[0034] In the figure: 1. bottom plate; 11. support plate; 2. mounting plate; 21. first bolt mounting hole; 22. second bolt mounting hole; 3. gasket; 31. waist round hole; 4. test bolt; 5. step bolt; 51. straight part; 52. threaded part; 53. limit plate; 54. first through hole; 55. slide slot hole; 56. operating rod; 57. blind hole; 6. extension plate; 61. fixed half; 62. second through hole; 7. slide rod; 71. top plate; 72. clamping spring; 8. butterfly bolt; 81. clamping block. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0036] Embodiment 1:

[0037] like Figure 1-3 As shown, a tool for bolt anti-slip test includes a base plate 1, a test bolt 4, a gasket 3 and a limiting structure.

[0038] A mounting plate 2 is vertically disposed on the bottom plate 1 , and a plurality of first bolt mounting holes 21 are opened in parallel on the mounting plate 2 .

[0039] The test bolt 4 is threadedly connected in one of the first bolt mounting holes 21 .

[0040] The gasket 3 is provided with a round hole 31 along the length direction, and the gasket 3 is vertically installed between the test bolt 4 and the mounting plate 2 .

[0041] The limiting structure is arranged on the mounting plate 2 , and includes two second bolt mounting holes 22 , two step bolts 5 and a limiting plate 53 .

[0042] The two second bolt mounting holes 22 are arranged in parallel below the first bolt mounting hole 21 .

[0043] The step bolt 5 includes a straight portion 51 and a threaded portion 52 . The diameter of the straight portion 51 is greater than the diameter of the threaded portion 52 . The threaded portion 52 of the step bolt 5 is threadedly connected in two corresponding second bolt mounting holes 22 .

[0044] Two first through holes 54 are horizontally opened on the limiting plate 53, and the two first through holes 54 correspond to the two step bolts 5 one by one. The straight portion 51 of the step bolt 5 is inserted into the corresponding first through holes 54. The limiting plate 53 can move horizontally along the length direction of the step bolt 5. When the limiting plate 53 is close to the mounting plate 2, the lower side of the gasket 3 contacts the upper side of the limiting plate 53.

[0045] Insert the test bolt 4 into the waisted hole 31 of the matching gasket 3, and then thread the test bolt 4 into the first bolt mounting hole 21 on the mounting plate 2. In the initial state, the limiting plate 53 is horizontally close to the side of the mounting plate 2 close to the gasket 3, so that the lower side of the gasket 3 is close to the upper side of the limiting plate 53, so as to avoid the gasket 3 from deflecting and displacing when tightening the test bolt 4, which affects the subsequent pressure application work;

[0046] When the test bolt 4 reaches the specified torque, the limit plate 53 is pulled outward to separate the limit plate 53 from the gasket 3. At this time, the universal testing machine is used to apply vertical downward pressure to the gasket 3. Since the gasket 3 is provided with a waisted round hole 31, when the friction between the gasket 3 and the test bolt 4 is less than the pressure of the universal testing machine, the gasket 3 starts to move downward. The anti-slip ability of the test bolt 4 is analyzed through the pressure data of the universal testing machine to determine whether the test bolt 4 meets the design requirements.

[0047] In addition, since the test bolt 4 and the gasket 3 are relatively fixed, during the extreme pressure application process, the relative displacement of the test bolt 4 and the gasket 3 can prevent the test bolt 4 from being sheared and popping outward, thereby ensuring the safety of the test personnel.

[0048] Preferably, a plurality of support plates 11 are provided between both sides of the mounting plate 2 and the bottom plate 1 , and the support plates 11 play a supporting and reinforcing role for the mounting plate 2 .

[0049] In this embodiment, both ends of the limit plate 53 extend out of both sides of the mounting plate 2 , and the limit plates 53 extending out of both sides of the mounting plate 2 facilitate the limit plates 53 to slide inward and outward along the length direction of the step bolt 5 .

[0050] Preferably, different hole diameters can be selected for the first bolt mounting holes 21 so that the tooling can be suitable for test bolts 4 of different specifications. It is only necessary to make the lower side of the gasket 3 flush with the upper side of the limiting plate 53 and contact each other, thereby improving the use efficiency.

[0051] Embodiment 2:

[0052] like Figure 4-5 As shown, a slide slot hole 55 is horizontally opened on the limit plate 53, and the two step bolts 5 are inserted in the slide slot hole 55. The limit plate 53 can move horizontally along the length direction of the step bolt 5, and can also move horizontally along the width direction of the mounting plate 2.

[0053] When the length of the limit plate 53 is small, the limit plate 53 can be driven to move left and right along the width direction of the mounting plate 2. No matter which first bolt mounting hole 21 the test bolt 4 is installed in, the limit plate 53 can be flush with the lower side edge of the gasket 3 and contact each other, thereby reducing the size of the limit plate 53 and the overall weight of the tooling for easy carrying.

[0054] In this embodiment, an operating rod 56 is provided on a side of the limiting plate 53 away from the mounting plate 2 , and the limiting plate 53 can be conveniently driven to move by the operating rod 56 , and the structure is simple.

[0055] Embodiment three:

[0056] like Figure 6-7As shown, the two ends of the limit plate 53 are respectively provided with an extension plate 6, and the extension plate 6 is provided with a fixing plate 61, and the mounting plate 2 is located between the limit plate 53 and the fixing plate 61, and the fixing plate 61 is provided with a second through hole 62, and a slide rod 7 is inserted into the second through hole 62, one end of the slide rod 7 is fixedly connected to the mounting plate 2, and the other end is provided with a top plate 71, and a clamping spring 72 is sleeved on the slide rod 7 located between the fixing plate 61 and the mounting plate 2. Under the action of the clamping spring 72, the limit plate 53 and the mounting plate 2 are fitted together, and the limit plate 53 is provided with a pushing structure that can separate the limit plate 53 from the mounting plate 2.

[0057] In the initial state, under the action of the compression spring 72, the limit plate 53 and the mounting plate 2 are fitted together, which makes it convenient to limit the gasket 3 to prevent the gasket 3 from deflecting following the test bolt 4. When it is necessary to apply pressure downward to the gasket 3, the limit plate 53 and the mounting plate 2 are separated through the pushing structure. The operation is simple, and the test personnel can quickly adjust the position of the limit plate 53.

[0058] In this embodiment, the pushing structure includes a blind hole 57 and a butterfly bolt 8 .

[0059] The blind hole 57 is formed on a side surface of the limiting plate 53 close to the mounting plate 2 . Preferably, the blind hole 57 is formed in the middle of the limiting plate 53 .

[0060] The butterfly bolt 8 is threadedly connected to the limiting plate 53 , and the inner end of the butterfly bolt 8 extends into the blind hole 57 and a pressing block 81 is rotatably provided at the end.

[0061] In the initial state, the clamping block 81 is located in the blind hole 57. When the limiting plate 53 and the mounting plate 2 need to be separated, the butterfly bolt 8 is rotated to drive the clamping block 81 at the end away from the blind hole 57 and gradually move to contact the mounting plate 2. Then the butterfly bolt 8 is continued to be rotated to use the clamping block 81 to push the mounting plate 2 and the limiting plate 53 to separate, and the clamping spring 72 is compressed. Similarly, the butterfly bolt 8 is rotated in the opposite direction to gradually return the clamping block 81 to the blind hole 57. At this time, under the action of the clamping spring 72, the mounting plate 2 and the limiting plate 53 are in contact with each other again, and the structure is simple.

Claims

1. A tool for bolt anti-slip test, characterized in that: include: A bottom plate (1), a mounting plate (2) being vertically arranged on the bottom plate (1), and a plurality of first bolt mounting holes (21) being opened in parallel on the mounting plate (2); A test bolt (4), wherein the test bolt (4) is threadedly connected in one of the first bolt mounting holes (21); A gasket (3), wherein a waist-shaped hole (31) is provided on the gasket (3) along the length direction, and the gasket (3) is vertically installed between the test bolt (4) and the mounting plate (2); A limiting structure is provided on the mounting plate (2), and the limiting structure can keep the gasket (3) in a vertical state when the gasket (3) is installed.

2. A bolt anti-slip test tool according to claim 1, characterized in that: A plurality of support plates (11) are provided between the two sides of the mounting plate (2) and the bottom plate (1).

3. A bolt anti-slip test tool according to claim 2, characterized in that: The limiting structure comprises: Two second bolt mounting holes (22), the two second bolt mounting holes (22) being arranged in parallel below the first bolt mounting hole (21); Two step bolts (5), the two step bolts (5) being threadedly connected in the two second bolt mounting holes (22) respectively; A limit plate (53) is installed on the two step bolts (5). When the limit plate (53) is in close contact with the mounting plate (2), the lower side of the gasket (3) is in contact with the upper side of the limit plate (53).

4. A bolt anti-slip test tool according to claim 3, characterized in that: The limiting plate (53) is provided with two first through holes (54) horizontally, the two first through holes (54) correspond to the two step bolts (5) one by one, the step bolts (5) are inserted into the corresponding first through holes (54), and the limiting plate (53) can move horizontally along the length direction of the step bolts (5).

5. A bolt anti-slip test tool according to claim 4, characterized in that: Both ends of the limiting plate (53) extend out of two sides of the mounting plate (2).

6. A bolt anti-slip test tool according to claim 3, characterized in that: The limiting plate (53) is horizontally provided with a slide slot hole (55), and the two step bolts (5) are inserted into the slide slot holes (55). The limiting plate (53) can move horizontally along the length direction of the step bolts (5) and can also move horizontally along the width direction of the mounting plate (2).

7. A bolt anti-slip test tool according to claim 6, characterized in that: An operating rod (56) is provided on a side of the limiting plate (53) away from the mounting plate (2).

8. The bolt anti-slip test tool according to claim 5, characterized in that: The two ends of the limit plate (53) are respectively provided with extension plates (6), and the extension plate (6) is provided with a fixing plate (61). The mounting plate (2) is located between the limit plate (53) and the fixing plate (61). The fixing plate (61) is provided with a second through hole (62), and a sliding rod (7) is inserted into the second through hole (62). One end of the sliding rod (7) is fixedly connected to the mounting plate (2), and the other end is provided with a top plate (71). A compression spring (72) is sleeved on the sliding rod (7) located between the fixing plate (61) and the mounting plate (2). Under the action of the compression spring (72), the limit plate (53) and the mounting plate (2) are fitted with each other. The limit plate (53) is provided with a pushing structure capable of separating the limit plate (53) from the mounting plate (2).

9. A bolt anti-slip test tool according to claim 8, characterized in that: The push structure comprises: A blind hole (57), wherein the blind hole (57) is formed on a side surface of the limiting plate (53) close to the mounting plate (2); A butterfly bolt (8) is threadedly connected to the limiting plate (53), the inner end of the butterfly bolt (8) extends into the blind hole (57) and a pressing block (81) is rotatably provided at the end.

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