A new material ball neck joint arm tension test device

Abstract

This invention discloses a tensile testing device for a novel ball joint arm, belonging to the field of ball joint arm testing technology. It includes a testing platform with a lead screw on its surface and a lifting plate on the circumferential surface of the lead screw. The testing platform also has a support device for limiting the ball joint arm's position. The support device includes a U-shaped support plate. A groove is formed on the surface of the testing platform, and the U-shaped support plate is slidably installed inside the groove. A connecting block is fixedly installed on the side of the U-shaped support plate near the lead screw, and a connecting rod is rotatably installed on the surface of the connecting block. A linkage transmission structure is formed between the lead screw, lifting plate, support plate, connecting rod, and U-shaped support plate. After the ball joint arm is placed, the motor-driven lead screw automatically completes the mutual convergence and limiting of the two U-shaped support plates, eliminating the need for cumbersome clamping and fixing of the ball joint arm's end by personnel.

Description

Technical Field

[0001] This invention belongs to the field of ball joint testing technology, specifically relating to a tensile testing device for a new material ball joint. Background Technology

[0002] As a core load-bearing hinge component of automotive chassis suspension and steering systems, the ball joint arm primarily bears the combined loads of tension, compression, torsion, and multi-angle swaying during driving. Its structural strength, fit precision, and fatigue resistance directly determine the vehicle's driving stability and ride safety. With the automotive industry's trend towards lightweighting, high load-bearing capacity, and long service life, new high-strength alloy modified materials are gradually replacing traditional ordinary forged steel materials in the manufacture of ball joint arms. These new materials possess higher specific strength, excellent fatigue toughness, corrosion resistance, and wear resistance, significantly improving structural reliability under complex operating conditions while reducing weight. They have now become the mainstream material choice for ball joint arms in mid-to-high-end vehicle models.

[0003] Patent publication number CN209043713U relates to a fixture for fatigue testing of a rocker arm ball joint, belonging to the technical field of automotive testing. The fixture includes a connector and an actuator. This patent features a modular structure for the connector, with a connecting hole at one end, hinged to the rocker arm ball joint. Both parts of the connector and the actuator are threaded, facilitating easy disassembly and adjustment, increasing versatility and flexibility, reducing testing costs, allowing for easy switching of loading directions, meeting testing requirements, improving testing accuracy, and offering a simple, small, and easily arranged design with lower costs. Furthermore, an annular protrusion with a fan-shaped cross-section is provided within the connecting hole, ensuring that the connector and the rocker arm ball joint's limiting groove have a circular arc surface contact, eliminating clearance fit, reducing wear, preventing deformation of the product and fixture, improving testing accuracy, preventing difficulties in disassembly after damage, facilitating reuse, and further reducing costs.

[0004] The aforementioned patents enable personnel to perform tensile testing on objects and have a flexible disassembly and assembly mechanism, which allows personnel to flexibly change the required clamp components according to different testing needs, effectively increasing the applicability of tensile testing and making it highly practical. However, during the clamping process of the test piece, it is necessary to manually fix the upper and lower ends separately, resulting in low testing efficiency. Therefore, a new material ball neck joint tensile testing device that facilitates fixing the two ends is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a tensile testing device for a new type of ball joint arm to solve the problem of low testing efficiency caused by the need for manual fixation of the upper and lower ends.

[0006] To achieve the above objectives, the present invention provides a tensile testing device for a new material ball joint arm, including a testing table, a lead screw is provided on the surface of the testing table, a lifting plate is provided on the circumferential surface of the lead screw, and a material holding device for limiting the ball joint arm is provided on the surface of the testing table. The material-supporting device includes a U-shaped material-supporting plate. A groove is provided on the surface of the testing table. The U-shaped material-supporting plate is slidably installed inside the groove. A connecting block is fixedly installed on the side of the U-shaped material-supporting plate near the lead screw. A connecting rod is rotatably installed on the surface of the connecting block. A receiving plate is rotatably installed on the end of the connecting rod away from the connecting block. A receiving rod is fixedly installed above the receiving plate. The receiving rod slides and passes through the lifting plate. The surface of the lifting plate is provided with a clamping device for clamping the ball end.

[0007] In one or more embodiments of the present invention, two U-shaped rack plates are provided and symmetrically distributed around the detection table. A cross member is fixedly installed on one side of each U-shaped rack plate that is close to each other. An L-shaped rod is slidably installed through the surface of the cross member. An auxiliary wheel is rotatably installed at the end of the L-shaped rod away from the cross member. A No. 1 spring is provided between the L-shaped rod and the cross member.

[0008] In one or more embodiments of the present invention, the clamping device includes a servo motor, which is fixedly installed above the lifting plate. A U-shaped frame is fixedly installed below the lifting plate. A clamping plate is disposed through the center of the U-shaped frame. A clamping groove is formed on the surface of the clamping plate. A lifting rod is slidably installed inside the clamping groove. A clamping block is provided on the surface of the lifting rod. An inclined rod is rotatably connected above the lifting rod. A threaded groove is formed at the output end of the servo motor. A receiving plate is connected to the output end of the servo motor through the threaded groove. The end of the inclined rod away from the lifting rod is rotatably connected to the receiving plate.

[0009] In one or more embodiments of the present invention, a limiting groove is provided on the surface of the clamping block, the limiting groove is configured as a slope one near the circular side wall of the clamping disc, and the lifting rod is configured as a slope two near the slope one.

[0010] In one or more embodiments of the present invention, the clamping disc rotates through the U-shaped frame, a fixed frame is fixedly installed on the side of the clamping block near the outer ring of the clamping disc, a slide rod is slidably installed inside the fixed frame, and a stop block is fixedly installed at the end of the slide rod away from the fixed frame.

[0011] Preferably, the stop block is configured as a right-angled trapezoid, and the bottom surface of the U-shaped frame is provided with a slot. After the stop block moves a certain distance, its inclined end is located at the entrance of the slot, at which point the servo motor can be started to make it rotate.

[0012] Preferably, a second spring is provided between the slide rod and the inner wall of the fixed frame. The second spring can drive the slide rod to return to its original position, and the fixed frame passes through and slides the clamping plate.

[0013] In one or more embodiments of the present invention, a prying device is further included, the prying device comprising a rotating ring rotatably mounted inside a U-shaped frame, an L-shaped lifting rod slidably mounted inside the rotating ring, a support plate fixedly mounted on the inner side wall of the U-shaped frame, the L-shaped lifting rod penetrating the support plate, an upper pressure plate fixedly mounted on the upper end of the L-shaped lifting rod, a lower pressure plate fixedly mounted on the circumferential surface of the L-shaped lifting rod below the support plate, a crossbar fixedly mounted on the outer ring of the rotating ring, a bayonet provided on the surface of the clamping disc, the end of the crossbar away from the rotating ring being disposed inside the bayonet, and a pressure block slidably mounted on the surface of the U-shaped frame material plate on the right side.

[0014] Preferably, the upper and lower ends of the pressure block are respectively set as arc surface one and arc surface two, and the lower end of the L-shaped lifting rod is set as arc surface three. When the L-shaped lifting rod rotates, it squeezes the pressure block downward through arc surface three and arc surface one. At this time, the lower pressure plate on the surface of the L-shaped lifting rod will prevent the L-shaped lifting rod from moving upward.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) The tensile testing device forms a linkage transmission structure with the lead screw, lifting plate, receiving plate, connecting rod and U-shaped frame plate. After the ball neck arm is placed, the motor drives the lead screw to automatically complete the mutual convergence and limiting of the two U-shaped frame plates. There is no need for the staff to perform cumbersome clamping and fixing of the ball arm end of the ball neck arm. During the tensile test, the U-shaped frame plate forms a support limit on the bottom of the workpiece. The lifting plate can stably apply the tensile force by continuously rising, thus eliminating the traditional complicated multi-point fixing tooling process.

[0016] (2) In the process of U-shaped frame material plate gathering and limiting, the cross part, L-shaped rod and auxiliary wheel are driven to move synchronously in opposite directions. The auxiliary wheels on both sides automatically center and correct the ball neck arm placed on the test table, so that the workpiece is accurately positioned in the center of the test table. In the subsequent ball end clamping and fixing operation, there is no need for manual fine adjustment of the workpiece placement position. The mechanical structure automatically centers and aligns, avoiding the problems of large deviation and long time consumption of manual alignment.

[0017] (3) The tensile testing device adopts a servo motor in conjunction with a threaded groove, a receiving plate, a diagonal bar, a lifting rod, and a clamping block to form an adaptive clamping mechanism. The servo motor can automatically complete the clamping and loosening of the ball end, which has a high degree of automation. Under the tensile test conditions, the clamping block restricts the inclined surface of the groove and the inclined surface of the lifting rod to form a self-locking clamping structure that becomes tighter as the workpiece is pulled upward. When the workpiece is pulled upward by the tensile force, the clamping force of the clamping block increases synchronously with the increase of the tensile force, avoiding the distortion of test data caused by loose clamping, and greatly improving the accuracy of tensile test data and the reliability of clamping fixation.

[0018] (4) The tensile testing device can switch working modes by cooperating with the servo motor, the stop block, the slot and the second spring. After the ball end is firmly clamped, it can automatically switch to the rotation mode, drive the clamp block and the ball end to reciprocate and rotate at an angle, realize the synchronous loading of tensile force and rotation of the ball end, monitor the torque and tensile force fluctuation changes in real time during the rotation process, and effectively check for quality hazards such as insufficient press-fit interference, slight looseness, and assembly burrs.

[0019] (5) During the rotation of the clamping plate, the tensile testing device drives the rotating ring, L-shaped lifting rod, crossbar and pressure block to move synchronously. The mechanical transmission logic makes the pressure block periodically press down on the ball joint end of the ball neck connector. The ball joint is used as the fulcrum to form a lever-type prying deflection, simulating the real working conditions of vehicle driving bumps and suspension jumping up and down. It can accurately detect the ball joint's resistance to off-center load pull-out strength and the interference jamming situation under multi-angle swing angle. It comprehensively assesses the reliability of the workpiece under complex working conditions and effectively improves the ball neck connector testing standards and the product's compatibility with vehicle use performance. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a schematic diagram of the position structure of the U-shaped frame plate and the lead screw in one embodiment of the present invention; Figure 3 This is a schematic diagram of the position structure of the cross member and the diagonal bar in one embodiment of the present invention; Figure 4 This is a schematic diagram of the position structure of the clamping disc and the lifting rod in one embodiment of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of section A; Figure 6 This is a schematic diagram of the position structure of the clamping disc and the L-shaped lifting rod in one embodiment of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram of section B; Figure 8 This is a schematic diagram of the position structure of the clamping block and the stop block in one embodiment of the present invention.

[0021] Explanation of key figure labels: 1. Testing table; 2. Lead screw; 3. Lifting plate; 4. U-shaped frame plate; 5. Connecting block; 6. Connecting rod; 7. Receiving plate; 8. Receiving rod; 9. Cross piece; 10. L-shaped rod; 11. Auxiliary wheel; 121. Servo motor; 122. U-shaped frame; 1221. Slot; 123. Clamping plate; 1231. Clamping groove; 1233. Bayonet; 124. Lifting rod; 125. Clamping block; 1251. Restricting groove; 126. Diagonal rod; 127. Receiving plate; 128. Fixing frame; 129. Sliding rod; 1210. Stop block; 1211. No. 2 spring; 131. Rotating ring; 132. L-shaped lifting rod; 133. Support plate; 134. Upper pressure plate; 135. Lower pressure plate; 136. Cross bar; 137. Pressure block; 14. No. 1 spring. Detailed Implementation

[0022] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0023] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0024] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0027] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] like Figures 1-8 As shown, it illustrates a tensile testing device for a new material ball neck joint arm according to an embodiment of the present invention, including a testing table 1, a lead screw 2 disposed on the surface of the testing table 1, a lifting plate 3 disposed on the circumferential surface of the lead screw 2, and a material holding device for limiting the ball arm disposed on the surface of the testing table 1. The material-supporting device includes a U-shaped material-supporting plate 4. A groove is provided on the surface of the inspection table 1. The U-shaped material-supporting plate 4 is slidably installed inside the groove. A connecting block 5 is fixedly installed on the side of the U-shaped material-supporting plate 4 near the lead screw 2. A connecting rod 6 is rotatably installed on the surface of the connecting block 5. A receiving plate 7 is rotatably installed on the end of the connecting rod 6 away from the connecting block 5. A receiving rod 8 is fixedly installed above the receiving plate 7. The receiving rod 8 slides and passes through the lifting plate 3. The surface of the lifting plate 3 is provided with a clamping device for clamping the ball end.

[0029] In this embodiment: the ball neck connector is placed at the center of the upper part of the testing table 1. Then, the lead screw 2 is rotated by the motor. The rotation of the lead screw 2 causes the lifting plate 3 to move downward. The lifting plate 3 moves downward and contacts and presses the receiving plate 7 downward. The downward movement of the receiving plate 7 causes the two U-shaped support plates 4 to move closer to each other through the connecting rod 6 and the connecting block 5. When the lifting plate 3 descends to the appropriate position, the ball head end of the ball neck connector is clamped and fixed by the clamping device. Then, the lead screw 2 reverses to drive the lifting plate 3 to rise. The rise of the lifting plate 3 causes the ball neck connector to rise. When the ball neck connector contacts the bottom surface of the U-shaped support plate 4, it will be blocked and cannot rise further. At this time, the ball neck connector is further lifted by the lifting plate 3. The ball joint arm undergoes a tensile test, which can be completed without complex fixation of the ball end of the ball joint arm, thus improving the overall testing efficiency. Since the contact area between the U-shaped frame plate 4 and the testing table 1 is larger than the contact area between the receiving rod 8 and the lifting plate 3, the U-shaped frame plate 4 will not release the limit on the ball joint arm during the upward testing process after the ball joint arm is limited. After the test is completed and the clamping device is released, the lifting plate 3 will rise a certain distance and contact and drive the receiving rod 8 to move upward. The upward movement of the receiving rod 8 drives the receiving plate 7 to move upward. The upward movement of the receiving plate 7 drives the two U-shaped frame plates 4 to move away from each other through the connecting rod 6 and the connecting block 5, thus releasing the limit on the ball joint arm.

[0030] Two U-shaped rack plates 4 are provided and symmetrically distributed around the inspection table 1. A cross member 9 is fixedly installed on the side of the two U-shaped rack plates 4 that is close to each other. An L-shaped rod 10 is slidably installed through the surface of the cross member 9. An auxiliary wheel 11 is rotatably installed at the end of the L-shaped rod 10 away from the cross member 9. A No. 1 spring 14 is provided between the L-shaped rod 10 and the cross member 9.

[0031] In this embodiment: as the two U-shaped support plates 4 approach each other, they will drive the two cross pieces 9 to approach each other. As the cross pieces 9 approach each other, the L-shaped rod 10 will drive the auxiliary wheels 11 to approach each other. As the two auxiliary wheels 11 approach each other, the position of the ball neck arm will be adjusted so that it is located in the center of the inspection table 1. This will eliminate the need for fine adjustment during the clamping and fixing process, thus improving the inspection efficiency. After both auxiliary wheels 11 have contacted the ball neck arm, the U-shaped support plates 4 will continue to approach, causing the L-shaped rod 10 to squeeze the first spring 14, reducing the adjustment efficiency of personnel during the process.

[0032] like Figures 1-8As shown, in another embodiment of the present invention, the clamping device includes a servo motor 121, which is fixedly installed above the lifting plate 3. A U-shaped frame 122 is fixedly installed below the lifting plate 3. A clamping plate 123 is provided through the center of the U-shaped frame 122. A clamping groove 1231 is provided on the surface of the clamping plate 123. A lifting rod 124 is slidably installed inside the clamping groove 1231. A clamping block 125 is provided on the surface of the lifting rod 124. A diagonal rod 126 is rotatably connected above the lifting rod 124. A threaded groove is provided at the output end of the servo motor 121. A receiving plate 127 is connected to the output end of the servo motor 121 through the threaded groove. The end of the diagonal rod 126 away from the lifting rod 124 is rotatably connected to the receiving plate 127.

[0033] In this embodiment: During the clamping process, the servo motor 121 is started. The output end of the servo motor 121 rotates and drives the receiving plate 127 to move upward through the threaded groove. The upward movement of the receiving plate 127 drives the lifting rod 124 and the clamping block 125 to move towards the center of the receiving plate 127 through the inclined rod 126. The movement of the clamping block 125 clamps and fixes the ball end.

[0034] The surface of the clamping block 125 is provided with a limiting groove 1251. The side wall of the limiting groove 1251 near the circular side of the clamping plate 123 is set as an inclined surface one, and the side of the lifting rod 124 near the inclined surface one is set as an inclined surface two.

[0035] In this embodiment: During the tensile test, the clamping block 125 is clamped and fixed to the ball end. The upward movement of the lifting plate 3 and the U-shaped frame 122 will cause the clamping block 125 to have a downward tendency relative to the lifting rod 124. Under the action of the inclined surface one of the limiting groove 1251 on the surface of the clamping block 125 and the inclined surface two on the surface of the lifting rod 124, the clamping block 125 will be pulled tighter and tighter during the tensile test, thus improving the fixing effect on the ball end.

[0036] The clamping plate 123 rotates through the U-shaped frame 122. A fixed frame 128 is fixedly installed on the side of the clamping block 125 near the outer ring of the clamping plate 123. A slide rod 129 is slidably installed inside the fixed frame 128. A stop block 1210 is fixedly installed at the end of the slide rod 129 away from the fixed frame 128.

[0037] The stop block 1210 is set as a right trapezoid, and the bottom surface of the U-shaped frame 122 is provided with a slot 1221.

[0038] A second spring 1211 is provided between the slide rod 129 and the inner wall of the fixed frame 128, through which the fixed frame 128 passes and slides the clamping plate 123.

[0039] In this embodiment: when the clamping block 125 moves towards the center of the receiving plate 127, it drives the fixed frame 128 to move. The movement of the fixed frame 128 drives the slide rod 129 to move. The movement of the slide rod 129 drives the stop block 1210 to move. Since the stop block 1210 is set as a right trapezoid, after the stop block 1210 moves a certain distance, its inclined end is located at the entrance of the slot 1221. At this time, the servo motor 121 can be started to rotate. The rotation of the servo motor 121 will drive the clamping plate 123 to rotate through the above transmission. The rotation of the clamping plate 123 drives the fixed frame 128 to rotate. The rotation of the fixed frame 128 drives the slide rod 129 and the stop block 1210 to rotate. When 210 rotates, the inclined end of its surface abuts against the entrance of the slot 1221, and moves towards the fixed frame 128 and contacts the limit during the continued rotation, which causes the slide rod 129 to squeeze the second spring 1211. After that, the servo motor 121 can drive the clamping plate 123 to continue rotating at a certain angle. The repeated rotation of the clamping plate 123 can drive the ball end to rotate through the clamping block 125, so that the ball neck arm is rotated while the tension is detected. The torque fluctuation of the ball end is monitored simultaneously, the internal fit clearance, lubrication uniformity, rotation damping and jamming are detected, and problems such as press-fitting looseness, assembly defects and poor lubrication are investigated. After the test is completed, the servo motor 121 reverses to drive the stop block 1210 to reverse. When the stop block 1210 moves back to the position of the slot 1221, it will reset under the action of the second spring 1211. Then the servo motor 121 continues to reverse. At this time, the right angle surface of the stop block 1210 will contact the inner wall of the slot 1221 and stop rotating. This will cause the output end of the servo motor 121 to drive the receiving plate 127 to move downward. Then, through the inclined rod 126 and the lifting rod 124, the clamping block 125 will release the clamp on the ball end, realizing the automation of clamping and releasing the ball neck arm.

[0040] like Figures 1-8 As shown, in another embodiment of the present invention, a prying device is also included. The prying device includes a rotating ring 131, which is rotatably installed inside the U-shaped frame 122. An L-shaped lifting rod 132 is slidably installed inside the rotating ring 131. A support plate 133 is fixedly installed on the inner side wall of the U-shaped frame 122. The L-shaped lifting rod 132 passes through the support plate 133. An upper pressure plate 134 is fixedly installed at the upper end of the L-shaped lifting rod 132. A lower pressure plate 135 is fixedly installed on the circumferential surface of the L-shaped lifting rod 132 below the support plate 133. A crossbar 136 is fixedly installed on the outer ring of the rotating ring 131. A bayonet 1233 is provided on the surface of the clamping plate 123. The end of the crossbar 136 away from the rotating ring 131 is located inside the bayonet 1233. A pressure block 137 is slidably installed on the surface of the right U-shaped frame plate 4.

[0041] The upper and lower ends of the pressure block 137 are respectively set as arc surface one and arc surface two, and the lower end of the L-shaped lifting rod 132 is set as arc surface three. When the L-shaped lifting rod 132 rotates, it presses the pressure block 137 downward through arc surface three and arc surface one. At this time, the lower pressure plate 135 on the surface of the L-shaped lifting rod 132 will prevent the L-shaped lifting rod 132 from moving upward.

[0042] In this embodiment: the U-shaped frame 122 moves downward, causing the rotating ring 131 and the L-shaped lifting rod 132 to move downward. The L-shaped lifting rod 132 moves downward and contacts the U-shaped frame material plate 4, and moves upward under its action. The upward movement of the L-shaped lifting rod 132 causes the lower pressure plate 135 to move upward. At this time, the pressure block 137 is located on the rotation trajectory of the L-shaped lifting rod 132 during the test at the ball arm end. When the clamping plate 123 rotates, it will contact and drive the crossbar 136 to deflect around the rotating ring 131 through the bayonet 1233. The deflection of the crossbar 136 brings The rotating ring 131 rotates, which drives the L-shaped lifting rod 132 to rotate. The L-shaped lifting rod 132 rotates and contacts and presses the pressure block 137 downward through its bottom end. The downward movement of the pressure block 137 will press the ball arm end to deflect downward with the ball head connection as the center. The reciprocating rotation of the receiving plate 127 causes the pressure block 137 to repeatedly drive the ball arm end to deflect. By pressing and prying, the ball head is subjected to sway and bending moment, simulating the bumpy suspension jumping condition of a vehicle, testing the ball head's resistance to eccentric load pull-out, and further improving the industry standard of ball neck joint arms.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tensile testing device for a novel material ball joint arm, comprising a testing platform (1), wherein a lead screw (2) is disposed on the surface of the testing platform (1), and a lifting plate (3) is disposed on the circumferential surface of the lead screw (2), characterized in that, The surface of the testing station (1) is provided with a material racking device for limiting the ball arm; The material-supporting device includes a U-shaped material-supporting plate (4), and a groove is provided on the surface of the testing table (1). The U-shaped material-supporting plate (4) is slidably installed inside the groove. A connecting block (5) is fixedly installed on the side of the U-shaped material-supporting plate (4) near the lead screw (2). A connecting rod (6) is rotatably installed on the surface of the connecting block (5). A receiving plate (7) is rotatably installed on the end of the connecting rod (6) away from the connecting block (5). A receiving rod (8) is fixedly installed above the receiving plate (7). The receiving rod (8) slides and passes through the lifting plate (3). The surface of the lifting plate (3) is provided with a clamping device for clamping the ball end.

2. The tensile testing device for a novel material ball neck joint according to claim 1, characterized in that, Two U-shaped rack plates (4) are provided and symmetrically distributed around the detection table (1). A cross piece (9) is fixedly installed on the side of the two U-shaped rack plates (4) that are close to each other. An L-shaped rod (10) is slidably installed through the surface of the cross piece (9). An auxiliary wheel (11) is rotatably installed at the end of the L-shaped rod (10) away from the cross piece (9). A No. 1 spring (14) is provided between the L-shaped rod (10) and the cross piece (9).

3. The tensile testing device for a novel material ball neck joint according to claim 2, characterized in that, The clamping device includes a servo motor (121), which is fixedly installed above the lifting plate (3). A U-shaped frame (122) is fixedly installed below the lifting plate (3). A clamping plate (123) is provided through the center of the U-shaped frame (122). A clamping groove (1231) is provided on the surface of the clamping plate (123). A lifting rod (124) is slidably installed inside the clamping groove (1231). A clamping block (125) is provided on the surface of the lifting rod (124). A diagonal rod (126) is rotatably connected above the lifting rod (124). A threaded groove is provided at the output end of the servo motor (121). A receiving plate (127) is connected to the output end of the servo motor (121) through the threaded groove. The end of the diagonal rod (126) away from the lifting rod (124) is rotatably connected to the receiving plate (127).

4. The tensile testing device for a novel material ball joint arm according to claim 3, characterized in that, The surface of the clamping block (125) is provided with a limiting groove (1251). The limiting groove (1251) is set as a slope one on the circular side wall near the clamping plate (123), and the lifting rod (124) is set as a slope two on the side near the slope one.

5. The tensile testing device for a novel material ball neck joint according to claim 4, characterized in that, The clamping disc (123) rotates through the U-shaped frame (122). A fixed frame (128) is fixedly installed on the side of the clamping block (125) near the outer ring of the clamping disc (123). A slide rod (129) is slidably installed inside the fixed frame (128). A stop block (1210) is fixedly installed at the end of the slide rod (129) away from the fixed frame (128).

6. The tensile testing device for a novel material ball neck joint according to claim 5, characterized in that, The stop block (1210) is configured as a right trapezoid, and the bottom surface of the U-shaped frame (122) is provided with a slot (1221).

7. The tensile testing device for a novel material ball joint arm according to claim 6, characterized in that, A second spring (1211) is provided between the slide rod (129) and the inner wall of the fixed frame (128), and the fixed frame (128) passes through and slides the clamping plate (123).

8. The tensile testing device for a novel material ball joint arm according to claim 7, characterized in that, It also includes a prying device, which includes a rotating ring (131) rotatably mounted inside a U-shaped frame (122). An L-shaped lifting rod (132) is slidably mounted inside the rotating ring (131). A support plate (133) is fixedly mounted on the inner side wall of the U-shaped frame (122). The L-shaped lifting rod (132) passes through the support plate (133). An upper pressure plate (134) is fixedly mounted on the upper end of the L-shaped lifting rod (132). The L-shaped lifting rod (132) is fixedly mounted with a lower pressure plate (135) on the circumferential surface below the support plate (133). The outer ring of the rotating ring (131) is fixedly mounted with a crossbar (136). The surface of the clamping plate (123) is provided with a bayonet (1233). The end of the crossbar (136) away from the rotating ring (131) is located inside the bayonet (1233). The surface of the U-shaped frame plate (4) on the right side is slidably mounted with a pressure block (137).

9. A tensile testing device for a novel material ball neck joint according to claim 8, characterized in that, The upper and lower ends of the pressure block (137) are respectively set as arc surface one and arc surface two, and the lower end of the L-shaped lifting rod (132) is set as arc surface three.

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