Bolt shearing strength detection device

Abstract

The utility model discloses a bolt shear strength detection device which comprises a base and a clamping mechanism, a mounting rack is fixedly arranged at the top of the base, a push rod is fixedly arranged at the top of the mounting rack in a penetrating manner, a pressure sensor is arranged below the push rod, a cutting head is fixedly arranged at the bottom of the pressure sensor, and a cushion block is arranged at the top of the base and right below the cutting head. The two sets of clamping mechanisms are symmetrically arranged, each set of clamping mechanism comprises a sliding block and a clamping plate, sliding grooves are formed in the positions, on the left side and the right side of the cushion block, of the top of the base in a concave mode respectively, a two-way screw is further rotationally inserted into the side wall of the base, and the bottoms of the two sliding blocks are slidably embedded into the corresponding sliding grooves respectively and are arranged on the positive and negative thread sections of the two-way screw in a matched and sleeved mode respectively. The clamping plate is arranged on the sides, close to each other, of the two sliding blocks above the sliding grooves. Through the arrangement, the two-way screw rod is rotated, and the two clamping plates are simultaneously moved in opposite directions to clamp the to-be-detected bolt, so that the device can clamp bolts with various lengths, the application scene is widened, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt detection, and in particular relates to a bolt shear strength detection device. Background Art

[0002] Bolts are a commonly used part in mechanical connectors. They connect two or more parts to achieve the purpose of fixing and transmitting force. The shear strength of a bolt refers to its ability to resist breaking when subjected to vertical shear force. This ability is related to the reliability and safety of the connector.

[0003] A Chinese patent with publication number CN217605540U discloses a bolt shear force detection device, which includes a base plate, a pad block fixedly arranged on the top of the base plate, a limit box arranged on both sides of the pad block on the top of the base plate, a turntable rotatably arranged in the limit box, and a convex shaft fixedly connected to the front of the turntable, and cross bars are slidably arranged on one side of the limit boxes close to each other, and vertical plates and clamping plates are fixedly arranged at both ends of the cross bars. The above scheme places the bolt on the pad block, and uses the rotating turntable to make the convex shaft push the vertical plate to move, thereby driving the two clamping plates to move closer to each other to limit the bolt and prevent the bolt from moving during the detection process.

[0004] When the above solution is used, in order to limit the bolt, it is necessary to rotate the two turntables separately to push the cross bar to move, which is relatively complicated to operate. At the same time, the movable distance of the cross bar is short, and the measurable length range of the bolt is limited, and the applicable scenarios are relatively limited. Utility Model Content

[0005] The utility model aims to provide a bolt shear strength detection device to solve the problems of the above-mentioned solution in that the operation is relatively complicated and the applicable scenes are relatively limited.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bolt shear strength detection device comprises a base and a clamping mechanism, wherein a mounting frame is fixedly arranged on the top of the base, a push rod is fixedly penetrated on the top of the mounting frame, a pressure sensor is arranged below the push rod, a cutting head is fixedly arranged on the bottom of the pressure sensor, the push rod can drive the pressure sensor and the cutting head to move up and down, a pad is arranged on the top of the base just below the cutting head, the clamping mechanism is symmetrically arranged in two groups, each group of the clamping mechanism comprises a slider and a clamping plate, the top of the base is respectively recessed with sliding grooves on the left and right sides of the pad, a bidirectional screw is also rotatably inserted on the side wall of the base, the positive and negative thread sections of the bidirectional screw are respectively located in the two sliding grooves, the bottoms of the two sliders are respectively slidably embedded in the corresponding sliding grooves, and are respectively matched with the positive and negative thread sections of the bidirectional screw, and the clamping plate is arranged above the sliding groove on the side where the two sliders are close to each other.

[0008] The principle and effect of this technical solution:

[0009] In the initial state, the two sliders are respectively located at one end of the two slides away from each other. The bolt to be tested is placed on the top of the pad and the bidirectional screw is rotated. Since the slides limit the rotation of the sliders, the two sliders approach each other as the bidirectional screw rotates until the two clamping plates are respectively pressed against the two end surfaces of the bolt to be tested. The push rod is extended to push the cutting head to destroy the bolt to be tested, and the value on the pressure sensor is recorded to complete the test.

[0010] Through the above-mentioned setting, the two clamping plates are moved toward each other by rotating the bidirectional screw to clamp the bolts to be tested, so that the device can clamp bolts of various lengths, broadening the applicable scenarios, simplifying the operation steps and improving the detection efficiency.

[0011] In the utility model, the slider has an inner cavity, and a sliding rod is fixedly arranged along the axial direction of a clamping plate close to one side of the slider. The sliding rod is slidably penetrated through the side wall of the inner cavity. The side wall of the inner cavity is symmetrically provided with through grooves on both sides of the sliding rod. Clamping blocks are slidably embedded in the two through grooves respectively. One end of the clamping block extending into the inner cavity is rotatably connected to a connecting rod, and one end of the connecting rod is rotatably connected to the end of the sliding rod extending into the inner cavity.

[0012] In the utility model, a tension spring is sleeved between the end of the sliding rod extending into the inner cavity and the side wall of the inner cavity.

[0013] In the utility model, a protrusion is fixedly provided on one end of the two clamping blocks which are close to each other and away from the sliding block.

[0014] In the utility model, an arc-shaped notch is arranged on one side of the two protrusions close to each other.

[0015] The principle and effect of this technical solution:

[0016] In the process of rotating the two-way screw to move the two clamping plates toward each other, the two clamping plates will respectively abut against the two end surfaces of the bolt, and continue to rotate the two-way screw. The two ends of the bolt will push the corresponding clamping plates and the sliding rod to move, and pull the clamping block close to the bolt, and at the same time stretch the tension spring to make it elastic until the protrusion clamps the bolt. When the detection is completed, the two-way screw is rotated in the opposite direction to make the two clamping plates move away from each other. When the clamping plates are separated from the bolts, the tension spring applies force to the sliding rod to make the clamping plates move away from the slider, and at the same time push the clamping block away from the bolt.

[0017] Through the above-mentioned arrangement, the clamping plate is pressed against the end face of the bolt, and the clamping block automatically clamps the side wall of the bolt. At the same time, the arc-shaped notch is used to further limit the displacement of the bolt, thereby improving the safety of the utility model. By arranging the tension spring, the clamping plate and the clamping block can be driven to reset after the detection is completed, which is convenient for the next detection, thereby improving the practicality of the utility model.

[0018] In the utility model, a countersunk hole is provided on the top of the base, and the cushion block is slidably inserted in the countersunk hole. A limiting groove is provided on the side wall of the countersunk hole, and a screw hole is provided on the end wall of the limiting groove, which passes through to the outside. A limiting block is slidably embedded in the limiting groove, and a threaded rod is cooperated in the screw hole. One end of the threaded rod extends into the limiting groove and is rotatably connected to the limiting block. The cushion block and the limiting block are respectively provided with mutually cooperating guide inclined surfaces on the side close to each other.

[0019] The principle and effect of this technical solution:

[0020] Because the notch is set in an arc shape, when the two protrusions clamp the bolt, the center of the bolt and the center of the notch are at the same height. If the diameter of the bolt is different, the distance between its side wall and the pad is also different. At this time, the threaded rod is rotated to move the limit block, thereby squeezing the pad, changing the length of the pad protruding from the base, so that the top of the pad is pressed against the bolt.

[0021] Through the above arrangement, the pad can provide support for bolts of various diameters, thereby broadening the application scenarios of the utility model.

[0022] In the utility model, a relay plate is fixedly arranged at the bottom of the push rod, the top of the pressure sensor is fixedly connected to the bottom of the relay plate, and the side wall of the relay plate is slidably abutted against the mounting frame. Through the above arrangement, the stability of the cutting head during detection of the utility model can be improved.

[0023] In the utility model, a motor is fixedly arranged on the side wall of the base, and the output end of the motor is connected to the bidirectional screw. Through the above arrangement, it is convenient for the inspector to rotate the bidirectional screw, thereby improving work efficiency and saving human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the axonometric drawing of the utility model;

[0025] Figure 2 This is an axonometric sectional view of the utility model;

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 It is a partial right side sectional view of the utility model;

[0028] Figure 5 It is a partial front sectional view of the utility model. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:

[0030] The figure marks in the drawings of the specification include: 10, base; 11, cushion block; 12, slide groove; 13, bidirectional screw; 14, countersunk hole; 141, limit groove; 142, screw hole; 15, limit block; 16, threaded rod; 17, relay plate; 18, motor; 20, mounting frame; 21, push rod; 22, pressure sensor; 23, cutting head; 30, clamping mechanism; 31, slider; 311, inner cavity; 312, through groove; 313, clamping block; 314, connecting rod; 315, protrusion; 316, notch; 32, clamping plate; 321, slide rod; 322, tension spring; 40, bolt.

[0031] As attached Figure 1-5 As shown, the utility model discloses a bolt shear strength detection device, including a base 10 and a clamping mechanism 30, the top of the base 10 is fixedly provided with a mounting frame 20, the top of the mounting frame 20 is fixedly penetrated with a push rod 21, a pressure sensor 22 is provided below the push rod 21, a cutting head 23 is fixedly provided at the bottom of the pressure sensor 22, the push rod 21 can drive the pressure sensor 22 and the cutting head 23 to move up and down, the top of the base 10 is provided with a cushion block 11 just below the cutting head 23, and the clamping mechanism 30 is symmetrical. Two groups are provided, and each group of clamping mechanisms 30 includes a slider 31 and a clamping plate 32. The top of the base 10 is respectively provided with a slide groove 12 on the left and right sides of the cushion block 11. The side wall of the base 10 is also rotatably inserted with a bidirectional screw 13. The forward and reverse thread sections of the bidirectional screw 13 are respectively located in the two slide grooves 12. The bottoms of the two sliders 31 are respectively slidably embedded in the corresponding slide grooves 12, and are respectively matched with the forward and reverse thread sections of the bidirectional screw 13. The clamping plate 32 is arranged above the slide groove 12 on the side where the two sliders 31 are close to each other.

[0032] In this embodiment, the slider 31 has an inner cavity 311, and a sliding rod 321 is fixedly arranged along the axial direction of the clamping plate 32 close to the side of the slider 31. The sliding rod 321 is slidably penetrated through the side wall of the inner cavity 311. The side wall of the inner cavity 311 is symmetrically provided with through grooves 312 on both sides of the sliding rod 321. Clamping blocks 313 are slidably embedded in the two through grooves 312 respectively. The ends of the clamping blocks 313 extending into the inner cavity 311 are rotatably connected to the connecting rod 314, and one end of the connecting rod 314 is rotatably connected to the end of the sliding rod 321 extending into the inner cavity 311.

[0033] In this embodiment, a tension spring 322 is sleeved between the end of the sliding rod 321 extending into the inner cavity 311 and the side wall of the inner cavity 311 .

[0034] In this embodiment, a protrusion 315 is fixedly provided on one end of the two clamping blocks 313 which is close to each other and away from the sliding block 31 , and a gap is provided between the protrusion 315 and the sliding block 31 .

[0035] In this embodiment, an arc-shaped notch 316 is disposed on one side of the two protrusions 315 close to each other.

[0036] In this embodiment, a countersunk hole 14 is provided on the top of the base 10, and the cushion block 11 is slidably inserted in the countersunk hole 14. A limiting groove 141 is provided on the side wall of the countersunk hole 14. A screw hole 142 that penetrates to the outside is provided on the end wall of the limiting groove 141. A limiting block 15 is slidably embedded in the limiting groove 141, and a threaded rod 16 is cooperated with and penetrated in the screw hole 142. One end of the threaded rod 16 extends into the limiting groove 141 and is rotatably connected to the limiting block 15. The cushion block 11 and the limiting block 15 are respectively provided with mutually matching guide inclined surfaces on the side close to each other.

[0037] In this embodiment, a relay plate 17 is fixedly provided at the bottom of the push rod 21 , the top of the pressure sensor 22 is fixedly connected to the bottom of the relay plate 17 , and the side wall of the relay plate 17 is slidably abutted against the mounting frame 20 .

[0038] In this embodiment, a motor 18 is fixedly mounted on the side wall of the base 10 , and an output end of the motor 18 is transmission-connected to the bidirectional screw 13 .

[0039] The specific implementation process is as follows:

[0040] In the initial state, the two sliders 31 are respectively located at one end of the two slide grooves 12 away from each other. The bolt 40 to be detected is placed on the top of the pad 11, and the bidirectional screw 13 is rotated. Since the slide groove 12 limits the rotation of the slider 31, the two sliders 31 are approached to each other as the bidirectional screw 13 rotates, until the two clamping plates 32 are respectively pressed against the two end surfaces of the bolt 40 to be detected, and the push rod 21 is extended to push the cutting head 23 to destroy the bolt 40 to be detected, and the value on the pressure sensor 22 is recorded to complete the detection.

[0041] In the process of rotating the bidirectional screw 13 to move the two clamping plates 32 toward each other, the two clamping plates 32 will respectively abut against the two end surfaces of the bolt 40, and the bidirectional screw 13 continues to be rotated. The two ends of the bolt 40 push the corresponding clamping plates 32 and the sliding rod 321 to move, and pull the clamping block 313 close to the bolt 40, and at the same time stretch the tension spring 322 to make it have elastic force until the protrusion 315 clamps the bolt 40. When the detection is completed, the bidirectional screw 13 is rotated in the opposite direction to make the two clamping plates 32 move in a direction away from each other. When the clamping plate 32 is separated from the bolt 40, the tension spring 322 applies force to the sliding rod 321 to make the clamping plate 32 move away from the slider 31, and at the same time push the clamping block 313 away from the bolt 40.

[0042] Because the notch 316 is set to be arc-shaped, when the two protrusions 315 clamp the bolt 40, the center of the bolt 40 and the center of the notch 316 are at the same height. If the diameter of the bolt 40 is different, the distance between its side wall and the cushion block 11 is also different. At this time, the threaded rod 16 is rotated to move the limit block 15, thereby squeezing the cushion block 11, changing the length of the cushion block 11 protruding from the base 10, so that the top of the cushion block 11 is pressed against the bolt 40.

[0043] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical scheme or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the technical scheme of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A bolt shear strength detection device, characterized in that: include: A base, a mounting frame is fixedly arranged on the top of the base, a push rod is fixedly penetrated on the top of the mounting frame, a pressure sensor is arranged below the push rod, a cutting head is fixedly arranged at the bottom of the pressure sensor, the push rod can drive the pressure sensor and the cutting head to move up and down, and a cushion block is arranged on the top of the base just below the cutting head; The clamping mechanism is symmetrically arranged in two groups, each group of clamping mechanisms includes a slider and a clamping plate, the top of the base is respectively provided with grooves on the left and right sides of the cushion block, and the side wall of the base is also rotatably inserted with a bidirectional screw, the positive and negative thread sections of the bidirectional screw are respectively located in the two grooves, the bottoms of the two sliders are respectively slidably embedded in the corresponding grooves, and are respectively matched with the positive and negative thread sections of the bidirectional screw, and the clamping plate is arranged above the groove on the side where the two sliders are close to each other.

2. The bolt shear strength detection device according to claim 1, characterized in that: The slider has an inner cavity, and a sliding rod is fixedly arranged along the axial direction of a clamping plate close to one side of the slider. The sliding rod is slidably penetrated through the side wall of the inner cavity. The side wall of the inner cavity is symmetrically provided with through grooves on both sides of the sliding rod. Clamping blocks are slidably embedded in the two through grooves. One end of the clamping block extending into the inner cavity is rotatably connected to a connecting rod, and one end of the connecting rod is rotatably connected to the end of the sliding rod extending into the inner cavity.

3. The bolt shear strength detection device according to claim 2, characterized in that: A tension spring is sleeved outside the slide rod between one end of the slide rod extending into the inner cavity and the side wall of the inner cavity.

4. The bolt shear strength detection device according to claim 3, characterized in that: A protrusion is fixedly arranged on one end of the two clamping blocks which is close to each other and away from the sliding block.

5. The bolt shear strength detection device according to claim 4, characterized in that: An arc-shaped notch is arranged on one side of the two protrusions close to each other.

6. The bolt shear strength detection device according to claim 5, characterized in that: A countersunk hole is provided on the top of the base, and the cushion block is slidably inserted into the countersunk hole. A limiting groove is provided on the side wall of the countersunk hole, and a screw hole is provided on the end wall of the limiting groove, which penetrates to the outside. A limiting block is slidably embedded in the limiting groove, and a threaded rod is provided in the screw hole. One end of the threaded rod extends into the limiting groove and is rotatably connected to the limiting block. The cushion block and the limiting block are respectively provided with mutually matching guide inclined surfaces on the side close to each other.

7. The bolt shear strength detection device according to any one of claims 1 to 6, characterized in that: A relay plate is fixedly arranged at the bottom of the push rod, the top of the pressure sensor is fixedly connected to the bottom of the relay plate, and the side wall of the relay plate is slidably abutted against the mounting frame.

8. The bolt shear strength detection device according to any one of claims 1 to 6, characterized in that: A motor is also fixedly arranged on the side wall of the base, and the output end of the motor is transmission-connected with the bidirectional screw.

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