Limit deflection angle testing equipment of tensioner

Abstract

The utility model discloses limit deflection angle testing equipment for a stretcher, which comprises a mounting plane and is characterized in that the mounting plane is mounted on a hollow support, the stretcher and a testing bolt are arranged on the mounting plane, the testing bolt is mounted on the mounting plane through a sliding device, the stretcher is mounted on the mounting plane through an angle adjusting device, and the angle adjusting device is mounted on the mounting plane. And a gradienter capable of displaying a deflection angle is arranged on the stretcher. According to the limiting deflection angle testing equipment for the tensioner, the deflection angle of the tensioner can be corrected through cooperation of the angle adjusting device and the gradienter, the tensioner with the adjusted deflection angle is made to twist the testing bolt, and the purpose that the testing tensioner can stretch into the limiting deflection angle of the testing bolt is achieved; and the tensioner and the test bolt can be detached and replaced, so that the test equipment can be suitable for most of tensioners in the market, and is wide in application range and relatively good in practicability.

Description

Technical Field

[0001] The utility model relates to the field of stretcher testing, in particular to a stretcher limit deflection angle testing device. Background Art

[0002] Bolt tensioner is a bolt pre-tightening device. It uses the hydraulic source provided by the hydraulic booster pump to determine the tensile force according to the tensile strength, yield coefficient and elongation of the material. It uses the tensile force generated by the ultra-high pressure oil pump to stretch the bolts to which force is applied in their elastic deformation zone, and the bolt diameter is slightly deformed, so that the nut is easy to loosen. The biggest advantage of the tensioner is that it can tighten and remove multiple bolts at a fixed value at the same time, and the force is evenly distributed. It is a safe, efficient and fast tool and the best way to tighten and remove bolts of various specifications.

[0003] The bolt tensioner is mainly composed of a piston cylinder, a piston, a support bridge and a tension nut. When working, the high-pressure oil output by the power source is transported to the piston cylinder through a high-pressure hose. Under the action of pressure, the piston in the piston cylinder moves up, driving the tension nut to move upward. The tension nut is threadedly connected to the working bolt, thereby lengthening the working bolt so that the bolt elongates to the required deformation amount, and the deformation is controlled within the elastic deformation range. Then, pre-tightening or disassembly operations are performed, and finally the working bolt is restored to its original shape by hydraulic or mechanical return to complete the operation.

[0004] If the axis of the bolt tensioner deviates too much from the axis of the bolt to be tightened, the tensioner may not be able to be put on, the tension direction may be offset and cause it to get stuck, and the tension imbalance may cause the bolt to deform. Therefore, it is very important to confirm the limit deflection angle of the tensioner that can be inserted into the bolt. Therefore, this patent proposes a test device that can confirm the limit deflection angle of the tensioner. Summary of the invention

[0005] The purpose of the utility model is to construct a tensioner limit deflection angle testing device that can fine-tune the axial deflection angle of the tensioner based on the existing tensioner testing equipment and based on the need to confirm the limit deflection angle of the tensioner that can be inserted into the bolt.

[0006] A device for testing the extreme deflection angle of a tensioner comprises a mounting plane, wherein the mounting plane is mounted on a hollow bracket, a tensioner and a test bolt are provided on the mounting plane, the test bolt is mounted on the mounting plane via a sliding device, the tensioner is mounted on the mounting plane via an angle adjustment device, and a spirit level capable of displaying the deflection angle is provided on the tensioner.

[0007] Furthermore, the angle adjustment device includes a screw nut, a lifting screw, a handwheel, a first connecting piece and a second connecting piece. The two screw nuts are vertically fixed on the mounting plane, the two lifting screws are respectively installed on the screw nuts, the lower ends of the lifting screws are fixedly installed with handwheels, and the first connecting piece and the second connecting piece are respectively fixedly installed on the upper ends of the two lifting screws.

[0008] Furthermore, the first connecting member and the second connecting member are respectively arranged in front and rear of the tensioner (with the side where the tensioner is connected to the test bolt as the front).

[0009] Specifically, the second connecting member and the stretcher are rotatably arranged, and the front end of the stretcher is placed on the first connecting member.

[0010] Furthermore, the sliding device includes a sliding rail, a slider and an L-shaped fixing plate, the sliding rail is fixedly installed on the upper end surface of the mounting plane, the slider is slidably connected to the sliding rail, the L-shaped fixing plate is fixedly installed on the upper end surface of the slider, and the test bolt is fixedly installed on the vertical surface of the L-shaped fixing plate.

[0011] Furthermore, the test bolt is placed horizontally, and the projection of the test bolt on the horizontal plane coincides with the projection of the slide rail on the horizontal plane.

[0012] Furthermore, a center line of a projection of the tensioner on a horizontal plane coincides with a center line of a projection of the test bolt on the horizontal plane.

[0013] Furthermore, the axis of the stretcher is parallel to the axis of the level, and when the axis of the stretcher is in a horizontal position, the level is also in a horizontal position, and the level is set to a zero point in a horizontal position state.

[0014] The beneficial effects of the utility model are that the extreme deflection angle testing equipment of a tensioner disclosed in the application can correct the deflection angle of the tensioner through the cooperation of an angle adjustment device and a spirit level, and enable the tensioner after the deflection angle is adjusted to twist the test bolt, so as to achieve the purpose of testing the extreme deflection angle of the test bolt that the tensioner can be extended into, and both the tensioner and the test bolt can be disassembled and replaced. The testing equipment can be applied to most tensioners on the market, has a wide range of applications, and is of good practicality.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of a specific example of the test equipment of the utility model;

[0018] Figure 2 yes Figure 1 A top view of

[0019] Figure 3 It is a partial structural schematic diagram of a specific example of the test equipment of the utility model;

[0020] Figure 4 It is a schematic diagram of an angle adjustment device in a specific example of the test equipment of the utility model;

[0021] Figure 5 yes Figure 4 A magnified view of the local structure;

[0022] In the figure: 101, tensioner; 102, hollow bracket; 103, mounting plane; 104, sliding device; 105, angle adjustment device; 106, annular fixing member; 107, slide rail; 108, slider; 109, level; 110, annular clamping member; 111, L-shaped fixing plate; 112, second connecting member; 113, handwheel; 114, screw nut; 115, first connecting member; 116, annular contact member; 117, lifting screw; 118, rotating shaft; 120, test bolt. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The limit deflection angle testing device of a tensioner of the utility model is further described in conjunction with the accompanying drawings.

[0025] like Figure 1 and Figure 2As shown, the test equipment described in this embodiment includes a hollow bracket 102, and the hollow bracket 102 is composed of a plurality of alloys staggered horizontally and vertically. The hollow bracket 102 includes four vertical surfaces and two horizontal surfaces, and the six surfaces form a cube. A mounting plane 103 is fixedly installed on the upper end surface of the hollow bracket 102, and an angle adjustment device 105 and a sliding device 104 are fixedly installed on the mounting plane 103. A tensioner 101 is installed on the angle adjustment device 105, and a test bolt 120 is installed on the sliding device 104. The hollow bracket 102 is provided with two mounting holes that penetrate up and down and are distributed front and back. The angle adjustment device 105 is fixedly installed at the position of the mounting hole, and a test bolt 120 is fixedly installed on the sliding device 104.

[0026] The projections of the axes of the tensioner 101 and the test bolt 120 on the horizontal plane are located on the same straight line.

[0027] like Figure 3 , Figure 4 and Figure 5 As shown, an annular fixing member 106 is installed in the above-mentioned mounting holes, a screw nut 114 is fixedly installed in the middle hollow part of the annular fixing member 106, a lifting screw 117 is installed in the screw nut 114, and a hand wheel 113 is fixedly installed at the lower end of the two lifting screws 117.

[0028] A second connecting member 112 is fixedly installed on the upper end of the lifting screw rod 117 located at the rear. The upper part of the second connecting member 112 is a U-shaped structure. An annular clamping member 110 is rotatably connected to the U-shaped opening of the second connecting member 112. A rotating shaft 118 is respectively installed at the two branches above the U-shaped opening of the second connecting member 112. The rotating shaft 118 is rotatably connected to the second connecting member 112 and is fixedly connected to the annular clamping member 110. The annular clamping member 110 is clamped and fixedly connected to the rear end of the stretcher 101.

[0029] A first connecting piece 115 is fixedly installed on the upper end of the lifting screw rod 117 located in the front. The upper part of the first connecting piece 115 is a semicircular structure. An annular contact piece 116 is fixedly installed on the outer peripheral surface of the tensioner 101. The annular contact piece 116 contacts the inner wall of the first connecting piece 115.

[0030] A level 109 parallel to the stretcher 101 is fixedly mounted above the stretcher 101 .

[0031] A slide rail 107 is also fixedly installed on the upper end surface of the installation plane 103, and a slider 108 is slidably connected to the slide rail 107. An L-shaped fixing plate 111 is fixedly installed on the upper end surface of the slider 108. The horizontal surface of the L-shaped fixing plate 111 is fixedly connected to the slider 108, and the test bolt 120 is fixedly installed on the vertical surface of the L-shaped fixing plate 111.

[0032] When starting the test, (1) the worker adjusts the tensioner 101 to a height that matches the test bolt 120, and sets the level 109 to zero at a position where the axis of the tensioner 101 is parallel to the horizontal plane;

[0033] (2) Adjust the angle of the stretcher 101 by means of the hand wheel 113 so that the axis of the stretcher 101 forms a certain angle with the horizontal plane;

[0034] (3) Push the L-shaped fixing plate 111 to drive the test bolt 120 to move toward the tensioner 101, and fix it after moving it to the position to be twisted;

[0035] (4) The tensioner 101 starts to rotate the test bolt 120 and records the working status of the tensioner 101 at the deflection angle.

[0036] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for testing the limit deflection angle of a tensioner, comprising a mounting plane, characterized in that: The mounting plane is installed on a hollow bracket, and a tensioner and a test bolt are provided on the mounting plane. The test bolt is installed on the mounting plane through a sliding device, and the tensioner is installed on the mounting plane through an angle adjustment device. The tensioner is provided with a spirit level capable of displaying a deflection angle.

2. The device for testing the limit deflection angle of a tensioner according to claim 1, characterized in that: The angle adjustment device includes a screw nut, a lifting screw, a handwheel, a first connecting piece and a second connecting piece. The two screw nuts are vertically fixed on the mounting plane, and the two lifting screws are respectively mounted on the screw nuts. A handwheel is fixedly mounted on the lower end of each lifting screw, and the first connecting piece and the second connecting piece are respectively fixedly mounted on the upper ends of the two lifting screws.

3. The device for testing the limit deflection angle of a tensioner according to claim 2, characterized in that: The first connecting member and the second connecting member are respectively arranged in front of and behind the stretcher.

4. The device for testing the limit deflection angle of a tensioner according to claim 3, characterized in that: The second connecting member is rotatably arranged with the stretcher, and the front end of the stretcher is placed on the first connecting member.

5. The device for testing the limit deflection angle of a tensioner according to claim 1, characterized in that: The sliding device includes a slide rail, a slider and an L-shaped fixing plate. The slide rail is fixedly installed on the upper end surface of the mounting plane. The slider is slidably connected to the slide rail. The L-shaped fixing plate is fixedly installed on the upper end surface of the slider. The test bolt is fixedly installed on the vertical surface of the L-shaped fixing plate.

6. The device for testing the limit deflection angle of a tensioner according to claim 5, characterized in that: The test bolt is placed horizontally, and the projection of the test bolt on the horizontal plane coincides with the projection of the slide rail on the horizontal plane.

7. The device for testing the limit deflection angle of a tensioner according to claim 1, characterized in that: The center line of the projection of the tensioner on the horizontal plane coincides with the center line of the projection of the test bolt on the horizontal plane.

8. The device for testing the limit deflection angle of a tensioner according to claim 1, characterized in that: The axis of the stretcher is parallel to the axis of the level. When the axis of the stretcher is in a horizontal position, the level is also in a horizontal position and the level is set to a zero point in the horizontal position state.

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