Device for simultaneously supporting measurement of bolt pretightening force and bolt looseness

Abstract

The utility model discloses a device for simultaneously supporting measurement of bolt pretightening force and bolt looseness, which comprises a bolt and a nut movably connected with the bolt. The multifunctional measuring assembly comprises a bolt pre-tightening force sensor, a bearing block, a bolt loosening sensor, a sleeve and an anchor point, the end face of the bolt is fixedly connected with the bolt pre-tightening force sensor, the top of the bolt pre-tightening force sensor is fixedly connected with the bearing block, the top of the bearing block is fixedly connected with the bolt loosening sensor, and the bolt loosening sensor is fixedly connected with the sleeve. The outer side of the nut is fixedly connected with a sleeve, and the middle of the sleeve is movably connected with an anchor point. According to the utility model, the deformation of the bolt can be calculated by measuring the ultrasonic echo time so as to estimate the pre-tightening force of the bolt, and meanwhile, the screwing-out angle of the nut relative to the bolt can be measured.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt detection technical field especially relates to a device that supports measuring bolt pretightening force and bolt loosening simultaneously. BACKGROUND

[0002] Bolt pretightening force sensor adopts ultrasonic technology, and the deformation of the bolt is calculated through the measurement of ultrasonic echo time to estimate the pretightening force of the bolt. The sensor needs to be pasted on the bolt end face to realize the emission of ultrasonic wave signals to the bolt interior and the reception of echo through the ultrasonic transceiver components of the sensor. The bolt loosening sensor can accurately measure the relative rotation angle of the nut relative to the bolt. Generally, the anchor point is pasted on the bolt end face, and the sensor is installed on the nut. When the bolt loosens, the nut has a certain rotation angle relative to the bolt, and the sensor installed on the nut also rotates with the nut, and the sensor has the same rotation angle relative to the anchor point pasted on the bolt end face. The bolt loosening sensor can obtain the rotation angle of the nut relative to the bolt by measuring the rotation angle between the sensor and the anchor point.

[0003] Since the ultrasonic transceiver components of the pretightening force sensor and the anchor point used by the bolt loosening sensor are pasted on the bolt end face, and there is no device that supports measuring bolt pretightening force and bolt loosening simultaneously at present, the existing detection process is relatively complicated, and therefore a new combined structure is needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a device that supports measuring bolt pretightening force and bolt loosening simultaneously to solve the problem that the ultrasonic transceiver components of the pretightening force sensor and the anchor point used by the bolt loosening sensor are pasted on the bolt end face, and there is no device that supports measuring bolt pretightening force and bolt loosening simultaneously at present, leading to a relatively complicated existing detection process.

[0005] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0006] The utility model relates to a device that supports measuring bolt pretightening force and bolt loosening simultaneously, comprising:

[0007] A bolt and a nut, the nut is movably connected to the bolt;

[0008] A multifunctional measuring assembly, the multifunctional measuring assembly comprises a bolt pretightening force sensor, a receiving block, a bolt loosening sensor, a sleeve, and an anchor point, the bolt end face is fixedly connected with the bolt pretightening force sensor, the top of the bolt pretightening force sensor is fixedly connected with the receiving block, the top of the receiving block is fixedly connected with the bolt loosening sensor, the outer side of the nut is fixedly connected with the sleeve, and the anchor point is movably connected to the middle of the sleeve.

[0009] Further, the sleeve is in a cylindrical shape as a whole.

[0010] Further, the labor-saving and convenient replacement assembly comprises a clamping groove, and the clamping groove is arranged in the middle of the top plate of the sleeve.

[0011] Further, the labor-saving and convenient replacement assembly further comprises a guide groove and a clamping rod, the guide groove is arranged on the two sides of the top plate of the sleeve, and the clamping rod is movably connected to the guide groove.

[0012] Further, the labor-saving and convenient replacement assembly further comprises a U-shaped rod, a through hole, a cylindrical rod, a spring and a rectangular pull plate, the U-shaped rod is fixedly connected to the two sides of the sleeve, the through hole is arranged in the middle of the U-shaped rod, the cylindrical rod is movably connected to the through hole, one side of the cylindrical rod is fixedly connected to the clamping rod, the other side of the cylindrical rod is fixedly connected to the rectangular pull plate, and the spring is movably sleeved on the outer side of the cylindrical rod.

[0013] Further, the inner diameter of the spring is equal to the diameter of the through hole.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] The bolt pre-tightening force sensor installed on the bolt end face can calculate the deformation of the bolt and estimate the pre-tightening force of the bolt by measuring the ultrasonic echo time, and when the bolt is screwed, the nut has a certain rotation angle relative to the bolt, the position of the bolt loosening sensor of the device does not change, but the sleeve installed on the nut has a certain rotation with the nut, and the anchor point installed on the sleeve also rotates, so the device can also measure the rotation angle of the nut relative to the bolt.

[0016] Based on the above beneficial effects, by pulling the rectangular pull plate, the cylindrical rod drives the clamping rod to move to both ends at this time, and the spring is compressed under stress at this time, the clamping rod is separated from the clamping of the anchor point, the anchor point used for a long time is convenient to take out, then the new anchor point is put into the clamping groove, the rectangular pull plate is loosened, the spring restores, and the two end clamping rods clamp and connect the new anchor point, so that the labor-saving and rapid replacement of the anchor point can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating laboriously.

[0018] Figure 1 It is the overall schematic view of the utility model.

[0019] Figure 2 It is bolt pre-tightening force sensor and bolt loosening sensor connection schematic diagram of the utility model;

[0020] Figure 3 It is anchor point connection schematic diagram of the utility model;

[0021] Figure 4 It is card slot opening schematic diagram of the utility model;

[0022] Figure 5 It is spring connection schematic diagram of the utility model.

[0023] In the drawings, the component list represented by each sign is as follows:

[0024] 101, bolt; 102, nut;

[0025] 201, bolt pre-tightening force sensor; 202, receiving block; 203, bolt loosening sensor; 204, sleeve; 205, anchor point;

[0026] 301, card slot; 302, guide slot; 303, clamping rod; 305, U-shaped rod; 306, through hole; 307, cylindrical rod; 308, spring; 309, rectangular pull plate. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0028] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be further described in detail below with reference to the drawings.

[0030] Please refer to Figures 1-5 The embodiment is a device for simultaneously supporting bolt pre-tightening force and bolt loosening measurement, comprising:

[0031] Bolt 101 and nut 102, nut 102 is movably connected on bolt 101;

[0032] The multifunctional measuring assembly comprises a bolt pre-tightening force sensor 201, a receiving block 202, a bolt loosening sensor 203, a sleeve 204 and an anchor point 205, the bolt 101 is fixedly connected with the bolt pre-tightening force sensor 201 at an end face, the bolt pre-tightening force sensor 201 is fixedly connected with the receiving block 202 at a top, the receiving block 202 is fixedly connected with the bolt loosening sensor 203 at a top, the sleeve 204 is fixedly connected with the nut 102 at an outer side, and the sleeve 204 is movably connected with the anchor point 205 at a middle part;

[0033] The bolt pre-tightening force sensor 201 is used for detecting the pre-tightening force of the bolt 101, the receiving block 202 is used for connecting the receiving components, the sleeve 204 is provided, thereby guaranteeing the installation of the anchor point 205, and the bolt loosening sensor 203 is used in cooperation with the anchor point 205, thereby being used for measuring the rotation angle.

[0034] The sleeve 204 is in a whole cylindrical shape;

[0035] The sleeve 204 is provided in a shape suitable for the rotation of the bolt 101.

[0036] The labor-saving and convenient replacement assembly further comprises a clamping groove 301, the clamping groove 301 is arranged at a middle part of a top plate of the sleeve 204, and the anchor point 205 is movably connected in the clamping groove 301;

[0037] The clamping groove 301 is provided, thereby guaranteeing the preliminary connection of the anchor point 205.

[0038] The labor-saving and convenient replacement assembly further comprises a guide groove 302 and a clamping rod 303, the guide groove 302 is arranged at both sides of the top plate of the sleeve 204, the guide groove 302 is movably connected with the clamping rod 303, and the anchor point 205 is clamped and connected between the clamping rods 303;

[0039] The guide groove 302 is provided, thereby limiting and guiding the movement of the clamping rod 303, and guaranteeing the smooth movement of the clamping rod 303.

[0040] The labor-saving and convenient replacement assembly further comprises a U-shaped rod 305, a through hole 306, a cylindrical rod 307, a spring 308 and a rectangular pull plate 309, the U-shaped rod 305 is fixedly connected at both sides of the sleeve 204, the through hole 306 is arranged at a middle part of the U-shaped rod 305, the cylindrical rod 307 is movably connected in the through hole 306, one side of the cylindrical rod 307 is fixedly connected with the clamping rod 303, the other side of the cylindrical rod 307 is fixedly connected with the rectangular pull plate 309, and the spring 308 is movably sleeved at an outer side of the cylindrical rod 307;

[0041] The U-shaped rod 305 is provided, thereby guaranteeing the arrangement of the through hole 306, the cylindrical rod 307 is used for connecting the clamping rod 303 and the rectangular pull plate 309, and the spring 308 is provided, thereby providing a force for the clamping rod 303 to clamp the anchor point 205.

[0042] The inner diameter of the spring 308 is equal to the diameter of the through hole 306;

[0043] The size between the above components can ensure that the U-shaped rod 305 blocks the spring 308.

[0044] Working principle: first, the sleeve 204 is clamped by the clamping device, the bolt pretightening force sensor 201 is used to calculate the deformation of the bolt 101 by measuring the ultrasonic echo time, so as to estimate the pretightening force of the bolt 101, then the bolt 101 is screwed, at this time the bolt loosening sensor 203 is rotated by the bolt 101, and the anchor point 205 is in a static state, and then the unscrewing angle of the nut 102 relative to the bolt 101 can be measured, when the anchor point 205 is damaged after long-term use, the rectangular pull plate 309 is pulled to the two sides, at this time the clamping rod 303 moves to the two sides along the guide groove 302, and the spring 308 is compressed under stress, at this time the anchor point 205 is poured out from the sleeve 204 through the nut 102, then the new anchor point 205 is put into the clamping groove 301 through the nut 102, at this time the rectangular pull plate 309 is loosened, the spring 308 restores, and the clamping rod 303 at both ends moves to the middle, so as to clamp and fix the new anchor point 205, and the bolt 101 can be pre-tightened and loosened at the same time.

[0045] In the description of the utility model, need explanation further, unless have explicit provision and limitation, term " set ", " install ", " link ", " connect " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can through intermediate medium indirectly connect, can be two element inside intercommunication. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0046] Finally, it should be noted that: the above only for preferred embodiment of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A device for simultaneously supporting measurement of bolt pre-tightening force and bolt loosening, characterized by, Include: Bolt (101) and nut (102), the nut (102) is movably connected on the bolt (101); Multifunctional measuring assembly, the multifunctional measuring assembly includes bolt pretightening force sensor (201), bearing block (202), bolt loosening sensor (203), sleeve (204) and anchor point (205), the bolt (101) end surface is fixedly connected with bolt pretightening force sensor (201), the bolt pretightening force sensor (201) top is fixedly connected with bearing block (202), the bearing block (202) top is fixedly connected with bolt loosening sensor (203), the nut (102) outside is fixedly connected with sleeve (204), and the sleeve (204) is movably connected with anchor point (205) in the middle part.

2. The device of claim 1, wherein, The sleeve (204) is cylindrical as a whole.

3. The device of claim 1, wherein, It also includes a labor-saving and convenient replacement assembly, the labor-saving and convenient replacement assembly includes a clamping groove (301), the sleeve (204) top plate middle part is provided with a clamping groove (301), and the clamping groove (301) is movably connected with the anchor point (205).

4. The device of claim 3, wherein, The labor-saving and convenient replacement assembly further includes a guide groove (302) and a clamping rod (303), the sleeve (204) top plate both sides are provided with a guide groove (302), the guide groove (302) is movably connected with the clamping rod (303), and the clamping rod (303) is clamped and connected with the anchor point (205).

5. The device of claim 4, wherein, The labor-saving and convenient replacement assembly further includes a U-shaped rod (305), a through hole (306), a cylindrical rod (307), a spring (308) and a rectangular pull plate (309), the sleeve (204) both sides are fixedly connected with a U-shaped rod (305), the U-shaped rod (305) middle part is provided with a through hole (306), the through hole (306) is movably connected with a cylindrical rod (307), one side of the cylindrical rod (307) is fixedly connected with a clamping rod (303), the other side of the cylindrical rod (307) is fixedly connected with a rectangular pull plate (309), and the cylindrical rod (307) outside is movably sleeved with a spring (308).

6. The device of claim 5, wherein, The spring (308) inner diameter is equal to the diameter of the through hole (306).

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