High-toughness weather-proof torsion bar testing fixture

Abstract

The utility model discloses a high-toughness weather-proof torsion bar testing fixture which is used for detecting the torque of a torsion bar. The testing fixture comprises a frame body, a twisting block, a driver and a detector. The frame body is provided with a containing groove and a correcting groove, and the torsion bar is provided with a first meshing part matched with the containing groove. The torsion block is provided with an installation groove matched with the second meshing part of the torsion bar, a force application face and a detection face which are located on the two sides of the installation groove, and a first correction hole. The driver is installed on the frame body and used for applying force to enable the torsion block to drive the torsion bar to rotate. The detector is installed on the frame body, and a detection head of the detector abuts against the detection face to measure the rotation amount of the twisting block. The testing fixture can also comprise a sliding positioning block which is driven by the elastic member and is linked with the elastic assembly so as to realize rapid clamping. According to the utility model, the torsion amount of the rod body is converted into the displacement amount of the torsion block for measurement, and through the integrated correction and rapid clamping mechanism, the beneficial effects of high detection precision, convenient operation and high efficiency are realized.

Description

Technical Field

[0001] This utility model belongs to the field of torque bar torque detection technology, specifically relating to a high-strength, tough, and weather-resistant torque bar gauge. Background Technology

[0002] In the production and quality control of torsion bars, accurate and reliable testing of their torque performance is crucial. Currently, common methods for testing torsion bars typically involve applying torque to the bar itself and directly measuring its torsional angle or related deformation. However, this direct measurement method often faces challenges in practical operation:

[0003] On the one hand, it is difficult to directly install the drive and detection devices on the narrow or irregular surface of the torsion bar, and it is easy to introduce clamping errors. On the other hand, if the force applied by the drive component and the measurement by the sensor are not converted and decoupled by a transition structure, their interaction may affect the stability and linearity of the measurement, leading to data fluctuations. In addition, the complex clamping and measurement settings also reduce the detection efficiency and are difficult to adapt to the quality inspection rhythm of fast, batch production lines.

[0004] Therefore, the industry urgently needs a testing device that can achieve rapid and accurate measurements to improve the reliability, accuracy, and ease of operation of testing. Utility Model Content

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0006] A high-strength, tough, and weather-resistant torsion bar gauge for detecting the torque of a torsion bar, comprising:

[0007] The frame is provided with a placement slot and a correction slot, and the torsion bar is provided with a first meshing part that engages with the placement slot;

[0008] The torsion block has a mounting groove, a force application surface, a detection surface, and a through first correction hole. The torsion bar has a second meshing part that matches the mounting groove. The force application surface and the detection surface are located on both sides of the mounting groove.

[0009] The correction rod is used to correct the position of the torsion block by passing through the first correction hole and inserting into the correction slot;

[0010] A driver is mounted on the frame. The driver is equipped with a push rod. During detection, the push rod acts on the force application surface so that the torsion block tends to drive the torsion bar to rotate.

[0011] The detector is mounted on the frame and has a detection head. During detection, the detection head rests against the detection surface to detect the amount of rotation of the torsion block.

[0012] Furthermore, the frame includes a mounting plate, and the correction groove is disposed on the mounting plate. The mounting plate has a placement hole, and a first positioning block and a second positioning block are respectively mounted on both sides of the placement hole. The placement hole, the first positioning block, and the second positioning block cooperate to form the placement groove. The first positioning block is fixedly connected to the mounting plate, and the second positioning block is slidably mounted on the mounting plate. The mounting plate has a sliding groove, and the second positioning block has a limiting part located within the sliding groove. An elastic element is provided between the limiting part and the sliding groove. Under the action of the elastic element, the second positioning block tends to move towards the first positioning block to cooperate with the first positioning block and clamp the first engaging part.

[0013] Furthermore, the frame is also equipped with a tensioning handle for driving the second positioning block to slide, thereby loosening or clamping the torsion bar. The tensioning handle includes a tensioning rod, one end of which is a control end, and the other end is a handle end. The tensioning rod is hinged to the mounting plate via a hinge pin. The second positioning block is provided with a positioning pin, and the control end of the tensioning rod has an elongated hole with a length greater than the outer diameter of the positioning pin, with the positioning pin located within the elongated hole.

[0014] Furthermore, the tensioning handle also includes a fixing rod, which is fixed to the mounting plate, and the fixing rod and the handle end of the tensioning rod cooperate to form a clamp-like structure.

[0015] Furthermore, it also includes an axial positioning block, which is disposed between the placement groove and the torsion block. The axial positioning block is provided with a through hole for the torsion bar to pass through, and a through second correction hole for the correction rod to pass through, the second correction hole corresponding to the correction groove.

[0016] Compared with the prior art, this application has the following beneficial technical effects:

[0017] 1. The torque is applied directly to the torsion block force application surface by the driver push rod, while the detector head directly abuts against the torsion block detection surface to measure its displacement. This design cleverly converts the rod torsion, which is difficult to measure directly, into the torsion block surface rotation, which is easy to measure accurately. This avoids complex intermediate conversion links, reduces error sources, and thus significantly improves the reliability of detection and the accuracy of measurement data.

[0018] 2. The elastic pre-tightening structure provides automatic and flexible clamping force, achieving initial rapid positioning; the tensioning rod and the fixing rod form a clamp-like structure, allowing for effortless and intuitive operation with one hand, achieving a fast, effortless, and reliable tensioning and clamping function.

[0019] 3. The axial positioning block can determine the height of the torsion block in the axial direction, ensuring that the torsion block is at the same height as the zeroing reference during subsequent actual testing. This design eliminates systematic errors caused by differences in installation height, thereby ensuring the accuracy of the test results. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the inspection tool.

[0021] Figure 2 This is a top view of the inspection fixture.

[0022] Figure 3 This is a 3D diagram of a torsion bar.

[0023] Figure 4 This is a 3D view of the mounting plate.

[0024] Figure 5 This is a top view of the mounting plate.

[0025] Figure 6 A bottom view of the mounting plate and tension handle.

[0026] Figure 7 This is a 3D view of the second positioning block.

[0027] Figure 8 This is a 3D diagram of the twisted block.

[0028] Figure 9 This is a top view of the twist block.

[0029] Figure 10 This is a three-dimensional view of the axial positioning block.

[0030] The following is an explanation of the reference numerals in the attached figures:

[0031] 10. Frame; 11. Mounting plate; 12. Alignment groove; 13. Placement groove; 14. First positioning block; 15. Second positioning block; 16. Limiting part; 17. Slide groove; 18. Elastic element;

[0032] 20. Torque block; 21. Mounting slot; 22. Force application surface; 23. Detection surface; 24. First calibration hole;

[0033] 30. Correction rod;

[0034] 40. Driver; 41. Push rod;

[0035] 50. Detector; 51. Detection head;

[0036] 60. Tensioning handle; 61. Tensioning rod; 62. Hinge pin; 63. Locating pin; 64. Oblong hole; 65. Fixing rod;

[0037] 70. Axial positioning block; 71. Through hole; 72. Second correction hole;

[0038] 80. Torsion bar; 81. First engagement part; 82. Second engagement part. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0040] In the following embodiments, the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] This embodiment provides a high-strength, tough, and weather-resistant torsion bar inspection tool for accurate and efficient testing of the torque performance of a torsion bar 80. For example... Figures 1 to 10 As shown, the inspection tool mainly includes a frame 10, a torsion block 20, a correction rod 30, a driver 40, a detector 50, a tensioning handle 60, and an axial positioning block 70.

[0043] The frame 10 constitutes the basic support frame of the entire gauge, and its core part is the mounting plate 11. On the table surface of the mounting plate 11, a calibration groove 12 and a placement hole are precisely machined. The placement hole is used to accommodate the first engagement part 81 (e.g., a spline) at the end of the torsion bar 80 to be tested, so that the torsion bar 80 is located on the mounting plate 11 in a vertical position.

[0044] To achieve rapid and automatic centering and clamping of the torsion bar 80, a first positioning block 14 is bolted to one side of the placement hole. On the other side of the placement hole, a second positioning block 15 that can slide linearly is provided. Specifically, a linearly extending groove 17 is machined inside or on the surface of the mounting plate 11. The second positioning block 15 has a protruding limiting part 16, which is placed within the groove 17, allowing it to move horizontally only along the direction of the groove 17. An elastic element 18 (e.g., a compression spring) is also installed within the groove 17, continuously applying a pushing force towards the first positioning block 14 to the second positioning block 15. Thus, the placement hole, the fixed first positioning block 14, and the slidable second positioning block 15 together constitute an adaptive clamping placement groove 13. When the first engaging part 81 of the torsion bar 80 is inserted, under the action of the spring force, the second positioning block 15, together with the first positioning block 14, automatically clamps it, effectively preventing slippage or rotation during testing.

[0045] The torsion block 20 is the core conversion component for torque loading and measurement, and it is also made of high-strength material. It has a central mounting groove 21 that precisely mates with the second engagement portion 82 (such as a smaller spline or square head) at the other end of the torsion bar 80, ensuring lossless torque transmission. A flat force-applying surface 22 is machined on one outer edge of the torsion block 20, and a similarly flat detection surface 23 is machined on the opposite side. Furthermore, the torsion block 20 also has a through-hole 24, the axis of which is precisely set.

[0046] The actuator 40 (which can be an electric cylinder, pneumatic cylinder, hydraulic cylinder, or elastic telescopic rod) is fixedly mounted on the frame 10 by a robust bracket, with the axis of its push rod 41 aligned with the force-applying surface 22 of the torsion block 20. During detection, the push rod 41 extends and directly presses against the force-applying surface 22, thereby applying a rotational torque to the torsion block 20. The detector 50 (such as a high-precision inductive displacement sensor or digital dial indicator) is mounted on the other side of the frame 10, with its detection head 51 precisely aligned with the detection surface 23 of the torsion block 20. When the torsion block 20 rotates under the push of the actuator 40, the detection surface 23 is displaced. By measuring this displacement, the detection head 51 can directly and accurately calculate the minute rotation angle of the torsion block 20. This design cleverly transforms the torsional deformation of the torsion rod 80 itself, which is difficult to measure directly, into a stable and high-precision measurement of the linear displacement of the surface of the torsion block 20, significantly improving the reliability and accuracy of the data.

[0047] To facilitate quick clamping and disassembly of workpieces, the fixture is also equipped with a tensioning handle 60. This component includes a tensioning rod 61 hinged to the mounting plate 11 via a hinge pin 62. One end of the tensioning rod 61 is a handle for easy gripping, and the other end is a control end. A positioning pin 63 is fixedly mounted on the second positioning block 15. Correspondingly, an elongated hole 64 with a length greater than the outer diameter of the positioning pin 63 is provided at the control end of the tensioning rod 61, through which the positioning pin 63 passes. This elongated hole 64 and the pin cleverly convert the rotation of the tensioning rod 61 around the hinge point into the horizontal linear movement of the second positioning block 15. In addition, a fixing rod 65 is fixed on the mounting plate 11, which is opposite to the handle end of the tensioning rod 61, forming a pliers-like structure. The operator only needs to pinch the handle end and the fixed rod 65 with one hand to easily overcome the spring force and pull the second positioning block 15 backward to release the workpiece; after releasing, the second positioning block 15 automatically moves forward to clamp the workpiece under the action of the spring, realizing fast, labor-saving and reliable one-handed operation.

[0048] The axial positioning block 70 is an independent rectangular block component with a through hole 71 at its center, allowing the rod portion of the torsion bar 80 to pass freely. A second calibration hole 72 is also precision-machined through the block. The main function of this component is to perform precise positioning during system calibration. In the calibration state, the axial positioning block 70 is placed at a predetermined position on the mounting plate 11, between the placement groove 13 and the position where the torsion bar 20 is to be installed. At this time, the center of its second calibration hole 72 must be strictly aligned with the center of the calibration groove 12 on the mounting plate 11 and the center of the first calibration hole 24 on the torsion bar 20.

[0049] The workflow of this inspection tool is as follows:

[0050] Step 1, System Calibration: Place the axial positioning block 70 at the predetermined calibration position on the mounting plate 11. Place the torsion block 20 (without installing the torsion bar 80) in its installation area, ensuring its first calibration hole 24 is approximately aligned with the second calibration hole 72 of the axial positioning block 70. Then, pass a high-precision calibration rod 30 sequentially through the first calibration hole 24 of the torsion block 20 and the second calibration hole 72 of the axial positioning block 70, finally inserting it tightly into the calibration groove 12 of the mounting plate 11. At this point, the three-dimensional position of the torsion block 20 in space (especially its height and rotation angle) is uniquely and precisely locked; this state is defined as the "mechanical zero point" of the detection system. Maintaining this state, activate the driver 40 to slightly extend its push rod 41 and make stable contact with the force application surface 22 of the torsion block 20. Simultaneously, adjust the detector 50 so that its detection head 51 abuts against the detection surface 23 and sets the reading to zero. After zeroing, remove the calibration rod 30, torsion block 20, and axial positioning block 70.

[0051] Step 2: Install the torsion bar 80 to be tested: The operator pinches the handle end of the tensioning handle 60 and the fixing rod 65 with one hand, causing the second positioning block 15 to retract, opening the entrance to the placement slot 13. Insert the end of the torsion bar 80 with the first engaging part 81 into the placement hole, ensuring one of its reference surfaces is against the first positioning block 14. Release the handle; under the action of the internal spring, the second positioning block 15 automatically advances, securely clamping the first engaging part 81 together with the first positioning block 14. Then, place the axial positioning block 70 onto the rod portion of the torsion bar 80, ensuring its bottom surface contacts the surface of the mounting plate 11. Finally, align the mounting slot 21 of the torsion block 20 and fit it onto the second engaging part 82 at the end of the torsion bar 80.

[0052] Step 3: Perform torque detection: Start the driver 40, controlling its push rod 41 to apply a thrust to the force application surface 22 of the torsion block 20. This thrust is converted into torque, which is transmitted to the torsion bar 80 through the torsion block 20, causing it to undergo elastic torsion. The torsion of the torsion bar 80 drives the torsion block 20 to rotate synchronously, and its detection surface 23 is displaced accordingly. The detector 50 detects and records this displacement in real time. Based on the pre-calibrated torque-displacement relationship curve, the torque value borne by the torsion bar 80 at the current torsion angle can be accurately obtained. After the test is completed, the driver 40 is unloaded, and the workpiece can be disassembled in the reverse order.

[0053] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A high-strength, tough, and weather-resistant torsion bar gauge for detecting the torque of a torsion bar (80), characterized in that, include: The frame (10) is provided with a placement groove (13) and a correction groove (12), and the torsion bar (80) is provided with a first engagement part (81) that matches the placement groove (13). The torsion block (20) is provided with a mounting groove (21), a force application surface (22), a detection surface (23) and a through first correction hole (24). The torsion bar (80) is provided with a second engagement part (82) that matches the mounting groove (21). The force application surface (22) and the detection surface (23) are located on both sides of the mounting groove (21). The correction rod (30) is used to correct the position of the torsion block (20) by passing through the first correction hole (24) and inserting it into the correction slot (12); A driver (40) is mounted on the frame (10). The driver (40) is provided with a push rod (41). During detection, the push rod (41) acts on the force application surface (22) so that the torsion block (20) has the tendency to drive the torsion bar (80) to rotate. The detector (50) is mounted on the frame (10). The detector (50) is provided with a detection head (51). During detection, the detection head (51) is pressed against the detection surface (23) to detect the amount of rotation of the torsion block (20).

2. The high-strength, tough, and weather-resistant torsion bar gauge according to claim 1, characterized in that, The frame (10) includes a mounting plate (11), and the correction groove (12) is provided on the mounting plate (11). The mounting plate (11) is provided with a placement hole, and a first positioning block (14) and a second positioning block (15) are respectively mounted on both sides of the placement hole. The placement hole, the first positioning block (14), and the second positioning block (15) cooperate to form the placement groove (13). The first positioning block (14) is fixedly connected to the mounting plate (11), and the second positioning block (15) is slidably mounted on the mounting plate (11). On the mounting plate (11), there is a sliding groove (17) and a limiting part (16) on the second positioning block (15). The limiting part (16) is located in the sliding groove (17). An elastic member (18) is provided between the limiting part (16) and the sliding groove (17). Under the action of the elastic member (18), the second positioning block (15) has a tendency to move toward the first positioning block (14) so ​​as to cooperate with the first positioning block (14) to clamp the first engaging part (81).

3. The high-strength, tough, and weather-resistant torsion bar gauge according to claim 2, characterized in that, The frame (10) is also equipped with a tensioning handle (60), which is used to drive the second positioning block (15) to slide, so as to loosen or clamp the torsion bar (80). The tension handle (60) includes a tension rod (61), one end of which is a control end and the other end is a handle end. The tension rod (61) is hinged to the mounting plate (11) via a hinge pin (62). The second positioning block (15) is provided with a positioning pin (63). The control end of the tension rod (61) is provided with an elongated hole (64) with a length greater than the outer diameter of the positioning pin (63). The positioning pin (63) is located inside the elongated hole (64).

4. The high-strength, tough, and weather-resistant torsion bar gauge according to claim 3, characterized in that, The tension handle (60) also includes a fixing rod (65), which is fixed to the mounting plate (11). The fixing rod (65) and the handle end of the tension rod (61) cooperate to form a clamp-like structure.

5. A high-strength, tough, weather-resistant torsion bar gauge according to claim 1, characterized in that, It also includes an axial positioning block (70), which is disposed between the placement groove (13) and the torsion block (20); the axial positioning block (70) is provided with a through hole (71) through which the torsion bar (80) passes, and a through second correction hole (72) through which the correction rod (30) passes, the second correction hole (72) corresponding to the correction groove (12).

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