A shearing force test tool for detecting a ball pin type bolt

Abstract

The application discloses a kind of for detecting ball head pin class bolt shear test tool, it is related to ball head pin class bolt shear detection technical field, the shear test tool for detecting ball head pin class bolt, including detection table and the support seat of installation in detection table upper end, limit stop board is reversed with groove as pivot, so that two limit stop board resist the both ends of ball head pin class bolt, realize the position of ball head pin class bolt Limiting and fixing, then start electric push rod one, so that telescopic rod moves down, through telescopic rod moving down will drive detection cut head to move down, so as to carry out shear detection to ball head pin class bolt, the limiting and fixing of position of ball head pin class bolt by two limit stop board, prevent in the shear detection process of ball head pin class bolt, ball head pin class bolt displacement occurs, avoid affecting detection result, guarantee the accuracy of detection result, staff observes display screen and knows the data of detection.

Description

Technical Field

[0001] This invention relates to the field of shear force testing technology for ball head bolts, and particularly to a testing fixture for testing the shear force of ball head bolts. Background Technology

[0002] Bolt: A mechanical part, a cylindrical threaded fastener fitted with a nut. It is a type of fastener consisting of a head and a threaded shank. It needs to be used with a nut to fasten two parts with through holes. This type of connection is called a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated. Therefore, a bolted connection is a detachable connection. Ball head bolts are a type of bolt. After ball head bolts are manufactured, they need to be tested for shear strength, so shear strength testing fixtures are required.

[0003] Existing shear force testing fixtures for ball-head bolts still have some shortcomings:

[0004] 1. The existing shear force testing fixture lacks a stable limiting function for ball head bolts, which makes them prone to displacement during the testing process and affects the testing results.

[0005] 2. The existing shear force testing fixture lacks adjustability, which makes it impossible to limit the position of ball head bolts of various specifications and lengths. As a result, it is impossible to conduct stable shear force testing on ball head bolts of various specifications and lengths, and its practicality is poor.

[0006] To address the aforementioned issues, we propose a shear force testing fixture for detecting ball-head bolts. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this invention provides a shear force testing fixture for testing ball-head bolts. This solves the problems of existing shear force testing fixtures lacking stable positioning for ball-head bolts, leading to easy displacement during testing and affecting the testing results; and lacking adjustability, making it impossible to position ball-head bolts of various lengths and specifications, thus hindering stable shear force testing and resulting in poor practicality.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A shear force testing fixture for ball-head bolts includes a testing table and a support base mounted on the upper part of the testing table. A placement pad is fixedly installed in the middle of the upper end of the support base. Placement holes for placing ball-head bolts are formed on both sides of the placement pad. The placement pad is U-shaped. Limiting plates for limiting the movement of the ball-head bolts are provided on both sides of the placement pad. Connecting blocks are provided on both sides of the upper end of the support base. Grooves adapted to the connecting blocks are formed on the bottom surfaces of the two limiting plates. The two limiting plates are movably sleeved on the connecting blocks. A rotating rod is fixedly inserted through each limiting plate, and gears are fixedly installed at both ends of each rotating rod. The support base is provided with… A top-moving structure is provided to drive the limiting stop plate to flip. The top-moving structure includes a push rod and a slide. Racks are fixedly installed on both sides of the upper end of the push rod. The push rod is U-shaped, and two gears mesh with two racks respectively. An electric push rod for moving the push rod is fixedly installed on the upper end of the slide. An adjustment structure is provided on the support base. The adjustment structure includes a slider and a threaded rod. A connecting block is fixedly installed on the upper end of the slider. The threaded rod passes through the slider and is threadedly connected to the slider. Connecting parts are fixedly installed on both sides of the bottom end of the slider. The two connecting parts are fixedly connected to the two ends of the slide respectively. The top-moving structure and the adjustment structure are symmetrically distributed about the midpoint of the support base.

[0012] Preferably, the upper surface of the support base is provided with two sliding grooves on both sides, wherein the slider is slidably installed in the sliding grooves.

[0013] Preferably, the two ends of the slider respectively movably pass through the second slide groove, the slider is in the shape of a cross block, and the two connecting members are located on both sides of the support base.

[0014] Preferably, a fixing block is fixedly installed at the middle of the upper end of the push rod, wherein the telescopic rod of the electric push rod is fixedly connected to the fixing block.

[0015] Preferably, the placement pad is located between two limiting plates, wherein the two limiting plates are centrally symmetrical about the midpoint of the placement pad.

[0016] Preferably, the threaded rod is rotatably mounted in the support seat via a bearing, and a handwheel is fixedly mounted at the end of the threaded rod, wherein the handwheel is located on the outside of the support seat.

[0017] Preferably, the slide is slidably mounted on the upper end of the testing platform, wherein each of the four corners of the upper end of the testing platform is fixedly mounted with a fixing member, and each fixing member is fixedly connected to the support base.

[0018] Preferably, the upper surface of the testing platform is provided with a sliding groove on both sides, and each sliding groove is U-shaped, wherein the push rod is slidably installed in the sliding groove.

[0019] Preferably, the upper surface of the testing platform is provided with strip-shaped through grooves on both sides, each strip-shaped through groove is connected to a sliding groove, and each fixed block is movably inserted through the strip-shaped through groove.

[0020] Preferably, a support arm is fixedly installed at the end of the testing platform, an electric push rod is fixedly installed on the support arm, and a testing cutter is fixedly connected to the telescopic rod of the electric push rod. The testing cutter is located directly above the placement pad, and a display screen is provided on the support arm. The display screen is electrically connected to the testing cutter through a wire.

[0021] (III) Beneficial Effects

[0022] 1. The movement of the two racks drives the gears to rotate, causing the limiting plates to rotate around the groove as the axis of rotation. This causes the two limiting plates to press against both ends of the ball-head bolt, thus limiting and fixing the position of the ball-head bolt. Then, the electric push rod is activated, causing the telescopic rod to move down. The downward movement of the telescopic rod causes the detection cutter to move down, thereby enabling the shear force test of the ball-head bolt. This testing fixture uses the two limiting plates to limit and fix the position of the ball-head bolt, preventing displacement of the ball-head bolt during the shear force test, avoiding affecting the test results, and ensuring the accuracy of the test results. The staff observes the test data on the display screen.

[0023] 2. After the ball head bolts have been inspected, the second electric push rod is activated, causing the second telescopic rod to move in the opposite direction. This causes the push rod to move in the opposite direction, which in turn causes the rack to move in the opposite direction, resulting in the limit plates flipping in the opposite direction. This lowers the position of the two limit plates below the placement hole, making it easier to insert other ball head bolts to be inspected into the placement hole. This facilitates subsequent shear force testing of other ball head bolts and makes the process more convenient.

[0024] 3. The push rod is U-shaped and is slidably installed in the slide groove, which limits the movement of the push rod and prevents it from shifting position. This ensures stable meshing between the rack and gear, thereby ensuring the stable operation of the jacking structure.

[0025] 4. The movement of the connecting piece will drive the slide and the second electric push rod to move. The extension rod of the second electric push rod will simultaneously drive the push rod to move, so that the push rod moves synchronously with the slider. The movement of the slider will drive the limit plate to move, which can adjust the distance between the two limit plates and the distance between the limit plate and the placement pad. This allows for the positional limitation and fixation of ball head bolts of various specifications and lengths, enabling stable shear force testing of ball head bolts of various specifications and lengths, thus improving the practicality of the test fixture.

[0026] 5. The slider is in the shape of a cross block and is slidably installed in the second slide groove, which makes the slider slide more stable, thereby making the position adjustment of the limit plate more stable and improving the stability of the adjustment structure. The test fixture structure is reasonably designed and makes the shear force detection of long ball head pin bolts more stable. Attached Figure Description

[0027] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Figure 1 This is a structural diagram of the overall fixture for testing the shear force of ball-head bolts according to the present invention;

[0029] Figure 2 This is a structural diagram of the pad block in this invention;

[0030] Figure 3 This is a structural diagram of the slider of the present invention;

[0031] Figure 4 This is a structural diagram of the detection station of the present invention;

[0032] Figure 5 This is a structural diagram of the limiting abutment plate of the present invention;

[0033] Figure 6 This is a structural diagram of the support base of the present invention.

[0034] Legend: 1. Inspection table; 11. Support arm; 12. Electric push rod one; 13. Inspection cutter head; 14. Display screen; 15. Fixing component; 16. Slide one; 17. Strip through groove; 2. Support base; 21. Placement pad; 22. Placement hole; 23. Connecting block; 24. Slide two; 3. Limiting plate; 31. Groove; 32. Rotating rod; 33. Gear; 4. Push rod; 41. Rack; 42. Fixing block; 5. Slide seat; 51. Electric push rod two; 6. Slider; 61. Connecting component; 7. Threaded rod; 71. Handwheel. Detailed Implementation

[0035] This application provides a shear force testing fixture for testing ball-head bolts, effectively solving the problems of existing shear force testing fixtures lacking stable positioning of ball-head bolts, leading to easy displacement during testing and affecting the testing effect; and existing shear force testing fixtures lacking adjustability, resulting in the inability to position ball-head bolts of various lengths and specifications, thus failing to perform stable shear force testing on ball-head bolts of various lengths and specifications, and having poor practicality. This shear force testing fixture uses the movement of two racks to drive the rotation of gears, causing the limiting plates to rotate around the groove as the axis of rotation, so that the two limiting plates abut against the two sides of the ball-head bolt. The device first uses electric push rods to limit and fix the position of the ball-head bolt. Then, it activates electric push rod one, causing the telescopic rod to move downwards. This downward movement of the telescopic rod drives the testing cutter head downwards, allowing for shear force testing of the ball-head bolt. This testing fixture uses two limiting plates to limit and fix the position of the ball-head bolt, preventing displacement during shear force testing and ensuring the accuracy of the results. The operator observes the test data on the display screen. After testing the ball-head bolt, electric push rod two is activated, causing the telescopic rod to move in the opposite direction, which in turn moves the push rod in the opposite direction. The movement causes the rack to move in the opposite direction, causing the limiting plates to flip in the opposite direction. This lowers the position of the two limiting plates below the placement hole, facilitating the insertion of other ball-head bolts to be tested through the placement hole. This makes subsequent shear force testing of other ball-head bolts easier and more convenient. The push rod is U-shaped and slides within the first groove, limiting its movement and preventing positional deviation. This ensures stable meshing between the rack and gear, guaranteeing the stable operation of the jacking structure. The movement of the connecting piece moves the slide block and the second electric push rod. The extension rod of the second electric push rod simultaneously moves the push rod, causing the push... The moving rod moves synchronously with the slider, which in turn moves the limiting plates. This allows adjustment of the distance between the two limiting plates and the distance between the limiting plates and the placement pad, thus enabling positional fixing of ball-head bolts of various lengths and specifications. This facilitates stable shear force testing of ball-head bolts of various lengths and specifications, improving the practicality of the testing fixture. The slider is cross-shaped and slides within the second groove, making its movement more stable and thus improving the stability of the limiting plate adjustment. The testing fixture has a reasonable structural design and provides more stable shear force testing for ball-head bolts of various lengths.

[0036] Example

[0037] The technical solution in this application effectively solves the problems of existing shear force testing fixtures, which lack stable positioning for ball-head bolts, leading to easy displacement during testing and affecting the testing results. Furthermore, existing shear force testing fixtures lack adjustability, making it impossible to position ball-head bolts of various lengths and specifications, thus hindering stable shear force testing and resulting in poor practicality. The overall approach is as follows:

[0038] To address the problems existing in the prior art, the present invention provides a shear force testing fixture for testing ball-end bolts, including a testing table 1 and a support base 2 mounted on the upper end of the testing table 1. A placement pad 21 is fixedly installed in the middle of the upper end of the support base 2. Placement holes 22 for placing ball-end bolts are opened on both sides of the placement pad 21. The placement pad 21 is U-shaped. Limiting plates 3 for limiting the ball-end bolts are provided on both sides of the placement pad 21. Connecting blocks 23 are provided on both sides of the upper end of the support base 2. Grooves 31 adapted to the connecting blocks 23 are opened on the bottom surface of the two limiting plates 3. The two limiting plates 3 are movably sleeved on the connecting blocks 23. A rotating rod 32 is fixedly inserted through each limiting plate 3. Each rotating rod 32 has a gear 33 fixedly installed at both ends. The support base 2 is equipped with a jacking structure for driving the limit plate 3 to rotate. The jacking structure includes a push rod 4 and a slide block 5. The upper end of the push rod 4 has racks 41 fixedly installed on both sides. The push rod 4 is U-shaped. The two gears 33 mesh with the two racks 41 respectively. The upper end of the slide block 5 is fixedly installed with an electric push rod 51 for pushing the push rod 4 to move. The support base 2 is equipped with an adjustment structure, which includes a slider 6 and a threaded rod 7. The connecting block 23 is fixedly installed on the upper end of the slider 6. The threaded rod 7 passes through the slider 6 and is threadedly connected to the slider 6. The bottom end of the slider 6 has two connecting pieces 61 fixedly installed on both sides. The two connecting pieces 61 are fixedly connected to the two ends of the slide block 5 respectively. Both the jacking structure and the adjustment structure are symmetrically distributed about the midpoint of the support base 2. Slide grooves 24 are provided on both sides of the upper surface of the support base 2. A slider 6 is slidably installed within the slide grooves 24, with both ends of the slider 6 movably passing through the slide grooves 24. The slider 6 is cross-shaped. Two connecting pieces 61 are located on both sides of the support base 2. A fixing block 42 is fixedly installed at the middle of the upper end of the push rod 4. The telescopic rod of the electric push rod 51 is fixedly connected to the fixing block 42. A pad 21 is located between two limiting plates 3, which are symmetrically distributed about the midpoint of the pad 21. A threaded rod 7 is rotatably installed within the support base 2 via bearings. A handwheel 71 is fixedly installed at the end of the threaded rod 7. Located outside the support base 2, the slide base 5 is slidably installed on the upper end of the testing table 1. Fixing members 15 are fixedly installed at the four corners of the upper end of the testing table 1, each fixing member 15 being fixedly connected to the support base 2. Slide grooves 16 are formed on both sides of the upper surface of the testing table 1, each slide groove 16 being U-shaped. Push rods 4 are slidably installed within slide grooves 16. Strip-shaped through grooves 17 are formed on both sides of the upper surface of the testing table 1, each strip-shaped through groove 17 communicating with slide grooves 16. Each fixing block 42 movably passes through a strip-shaped through groove 17. A support arm 11 is fixedly installed at the end of the testing table 1, and an electric push rod 12 is fixedly installed on the support arm 11. A testing cutter 13 is fixedly connected to the telescopic rod of the electric push rod 12.The inspection cutter 13 is positioned directly above the placement pad 21. A ball-head pin bolt is inserted through the two placement holes 22. Then, the electric push rod 51 is activated, causing the telescopic rod 2 to move. This movement of the telescopic rod 2 moves the fixing block 42, which in turn moves the push rod 4. The push rod 4 then moves the two racks 41, which in turn rotate the gear 33. This causes the limiting plate 3 to rotate around the groove 31, thus pressing against both ends of the ball-head pin bolt and fixing its position. Next, the electric push rod 12 is activated, causing the telescopic rod to move downwards. This downward movement of the telescopic rod moves the inspection cutter 13. The lowering of the ball-head bolt allows for shear force testing. This testing fixture uses two limiting plates 3 to fix the position of the ball-head bolt, preventing displacement during shear force testing and ensuring the accuracy of the results. The operator observes the test data on the display screen 14. After testing the ball-head bolt, the electric push rod 51 is activated, causing the telescopic rod 2 to move in the opposite direction, which in turn moves the push rod 4 in the opposite direction. This movement of the push rod 4 in the opposite direction drives the rack 41 to move in the opposite direction, causing the limiting plates 3 to flip in the opposite direction. This lowers the position of the two limiting plates 3 below the placement hole 22, facilitating the subsequent placement of other ball-head bolts to be tested. The bolt is inserted through the placement hole 22, facilitating subsequent shear force testing of other ball head bolts and making it more convenient to use. The push rod 4 is U-shaped and slides within the slide groove 16, limiting its movement and preventing positional deviation. This ensures stable meshing between the rack 41 and gear 33, thus guaranteeing the stable operation of the jacking structure. Twisting the handwheel 71 rotates the threaded rod 7, which in turn drives the slider 6 to slide within the slide groove 24. The movement of the slider 6 moves the connecting piece 61, which in turn moves the slide block 5 and the electric push rod 51. The extension rod of the electric push rod 51 simultaneously drives the push rod 4. The movement of the slider 6 causes the push rod 4 to move synchronously with the slider 6. This movement of the slider 6 moves the limiting plate 3, allowing adjustment of the distance between the two limiting plates 3 and the distance between the limiting plate 3 and the placement pad 21. This enables positional fixing of ball-head bolts of various lengths and specifications, facilitating stable shear force testing of these bolts and improving the practicality of the testing fixture. The slider 6 is cross-shaped and slides within the second groove 24, ensuring more stable sliding and thus more stable adjustment of the limiting plate 3. This enhances the stability of the adjustment structure. The testing fixture has a reasonable structural design, providing more stable shear force testing for ball-head bolts of various lengths.A display screen 14 is mounted on the support arm 11, and the display screen 14 is electrically connected to the detection cutter head 13 via wires.

[0039] Working principle:

[0040] First, insert the ball-head bolt through the two placement holes 22. Then, activate the electric push rod 51 to move the telescopic rod 2. The movement of the telescopic rod 2 will move the fixing block 42, which in turn will move the push rod 4. The movement of the push rod 4 will move the two racks 41, which in turn will rotate the gear 33. This will cause the limiting plate 3 to rotate around the groove 31, so that the two limiting plates 3 abut against both ends of the ball-head bolt. The device achieves positional fixation of the ball-head bolt. Then, the electric push rod 12 is activated, causing the telescopic rod to move down. The downward movement of the telescopic rod will drive the detection cutter 13 down, thereby enabling shear force testing of the ball-head bolt. This testing fixture uses two limiting plates 3 to limit and fix the position of the ball-head bolt, preventing displacement of the ball-head bolt during shear force testing, avoiding affecting the test results, and ensuring the accuracy of the test results. The staff observes the display screen 14 to obtain the test data.

[0041] The second step is to activate the electric push rod 51 after the ball head bolts have been tested. This causes the telescopic rod 2 to move in the opposite direction, which in turn causes the push rod 4 to move in the opposite direction. The reverse movement of the push rod 4 will cause the rack 41 to move in the opposite direction, which will cause the limiting plate 3 to flip in the opposite direction. This will make the position of the two limiting plates 3 lower than the position of the placement hole 22, making it easier to insert other ball head bolts to be tested into the placement hole 22. This will facilitate the subsequent shear force testing of other ball head bolts and make the process more convenient.

[0042] The third step is that the push rod 4 is U-shaped and is slidably installed in the slide groove 16, which limits the movement of the push rod 4 and prevents the push rod 4 from shifting position, thus ensuring the stable meshing of the rack 41 and the gear 33, thereby ensuring the stable operation of the jacking structure.

[0043] Fourth step, turn the handwheel 71 to rotate the threaded rod 7. The rotation of the threaded rod 7 will drive the slider 6 to slide in the second groove 24. The movement of the slider 6 will drive the connecting piece 61 to move. The movement of the connecting piece 61 will drive the slide block 5 and the second electric push rod 51 to move. The extension rod of the second electric push rod 51 will simultaneously drive the push rod 4 to move, so that the push rod 4 moves synchronously with the slider 6. The movement of the slider 6 will drive the limiting plate 3 to move. The distance between the two limiting plates 3 can be adjusted, and the distance between the limiting plate 3 and the placement pad 21 can be adjusted. This allows for the position limiting and fixing of ball head bolts of various specifications and lengths, thus enabling stable shear force testing of ball head bolts of various specifications and lengths, improving the practicality of the test fixture.

[0044] Fifth step, slider 6 is cross-shaped and is slidably installed in slide groove 24, which makes slider 6 slide more stably, thereby making the position adjustment of limit plate 3 more stable and improving the stability of the adjustment structure. The test fixture structure is reasonably designed and makes the shear force detection of long ball head pin bolts more stable.

[0045] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A testing fixture for detecting the shear force of ball-head bolts, characterized in that: The device includes a testing table (1) and a support base (2) installed on the upper end of the testing table (1). A placement pad (21) is fixedly installed in the middle of the upper end of the support base (2). Placement holes (22) for placing ball head bolts are opened on both sides of the placement pad (21). The placement pad (21) is U-shaped. Limiting plates (3) for limiting the ball head bolts are provided on both sides of the placement pad (21). Connecting blocks (23) are provided on both sides of the upper end of the support base (2). The bottom surfaces of the two limiting plates (3) are provided with grooves (31) that are adapted to the connecting blocks (23). The two limiting plates (3) are movably sleeved on the connecting blocks (23). Each of the limiting plates (3) is fixedly perforated by a rotating rod (32), and each of the rotating rods (32) is fixedly mounted with a gear (33) at both ends. The support base (2) is provided with a jacking structure for driving the limiting plates (3) to flip. The jacking structure includes a push rod (4) and a slide (5). Both sides of the upper end of the push rod (4) are fixedly mounted with racks (41). The push rod (4) is U-shaped. The two gears (33) mesh with the two racks (41) respectively. The upper end of the slide (5) is fixedly mounted with an electric push rod (51) for pushing the push rod (4) to move. The support base (2) is provided with an adjustment structure, which includes a slider (6) and a threaded rod (7). The connecting block (23) is fixedly installed on the upper end of the slider (6). The threaded rod (7) passes through the slider (6) and is threadedly connected to the slider (6). Connecting parts (61) are fixedly installed on both sides of the bottom end of the slider (6). The two connecting parts (61) are fixedly connected to the two ends of the slide block (5). The jacking structure and the adjustment structure are symmetrically distributed about the midpoint of the support base (2). The upper surface of the support base (2) is provided with two sliding grooves (24) on both sides. The slider (6) is slidably installed in the second groove (24); The two ends of the slider (6) respectively move through the second slide groove (24), and the slider (6) is in the shape of a cross block; The two connectors (61) are located on both sides of the support base (2); A fixing block (42) is fixedly installed in the middle of the upper end of the push rod (4). Among them, the telescopic rod 2 of the electric push rod 2 (51) is fixedly connected to the fixed block (42); The placement pad (21) is located between the two limiting plates (3); Among them, the two limiting plates (3) are centrally symmetrical about the midpoint of the placement pad (21); The threaded rod (7) is rotatably mounted in the support seat (2) via a bearing, and a handwheel (71) is fixedly mounted at the end of the threaded rod (7). The handwheel (71) is located on the outside of the support base (2); The slide block (5) is slidably mounted on the upper end of the testing table (1); Among them, the four corners of the upper end of the testing platform (1) are fixedly installed with fasteners (15), and each fastener (15) is fixedly connected to the support base (2); The upper surface of the testing platform (1) is provided with two sides of a sliding groove (16), and each sliding groove (16) is U-shaped; The push rod (4) is slidably installed in the slide groove (16).

2. The shear force testing fixture for detecting ball-head bolts as described in claim 1, characterized in that: The upper surface of the testing platform (1) is provided with strip-shaped through grooves (17) on both sides, and each strip-shaped through groove (17) is connected to the first slide groove (16); Each of the fixed blocks (42) is movable through the strip-shaped through groove (17).

3. The shear force testing fixture for ball-head bolts as described in claim 2, characterized in that: A support arm (11) is fixedly installed at the end of the testing platform (1), and an electric push rod (12) is fixedly installed on the support arm (11). The telescopic rod of the electric push rod (12) is fixedly connected to the testing cutter (13). The detection cutter (13) is located directly above the placement pad (21), and a display screen (14) is provided on the support arm (11). The display screen (14) is electrically connected to the detection cutter (13) through a wire.

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