Precise-positioning compression resistance detection device for electric vehicle frame machining

Abstract

The invention discloses an accurate positioning compression resistance detection device for electric vehicle frame processing, and relates to the technical field of electric vehicle frame detection, the accurate positioning compression resistance detection device comprises a detection base station, a pressure sensing assembly and a positioning assembly, the outer end of the top of the detection base station is provided with a rack, and the middle end of the top of the detection base station is provided with a placement table assembly; pressure sensing assemblies are arranged on the two sides of the outer portion of the placement table assembly, and a motor is arranged at the outer end of the rack. The transmission gear is driven by the motor to rotate, so that the transmission gear can drive the positioning ring to rotate through meshing with the tooth groove, and the positioning ring can drive the frame to adjust the inclination by rotating the positioning ring; therefore, the situation that the detection result is affected by uneven pressure application caused by inclination errors of the frame during compression resistance detection can be avoided, the positioning rings at the two ends rotate in the opposite directions, the positioning rings can apply shearing force to the frame, and through the design, torque detection of the frame can be achieved while compression resistance detection is conducted on the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of electric vehicle frame detection, and in particular to a precisely positioned compression resistance detection device for processing an electric vehicle frame. Background Art

[0002] The electric vehicle frame is the core structural part of the electric vehicle, which carries the battery, motor, control system and other components. The design and material selection of the electric vehicle frame have a great impact on the performance, safety and durability of the entire vehicle. When designing and producing electric vehicles, the quality and design of the frame is an important consideration, and after the frame is produced, it is usually necessary to perform compression testing.

[0003] The compression resistance testing devices commonly used in the market for processing electric vehicle frames usually detect the compression resistance of the frame by measuring whether the frame is deformed under a fixed pressure. However, this method has poor accuracy and is difficult to effectively detect when the frame is slightly deformed.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a precisely positioned compression testing device for electric vehicle frame processing is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a precisely positioned compression testing device for processing an electric vehicle frame to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a precisely positioned pressure-resistant detection device for processing an electric vehicle frame, comprising a detection base, a pressure-sensing component and a positioning component, wherein a frame is arranged at the top outer end of the detection base, and a placement platform component is arranged at the top middle end of the detection base, pressure-sensing components are arranged on both sides of the outside of the placement platform component, a motor is arranged at the outer end of the frame, and a transmission gear is arranged at the output end of the motor, a positioning component is arranged on the inner side of the frame, and the positioning component comprises a positioning ring, a tooth groove, a positioning frame, a third hydraulic cylinder, a clamping plate, a second slide groove, a displacement A seat and a two-way screw, a tooth groove is provided at the outer end of the positioning ring, and a positioning frame is arranged on the upper and lower sides of the positioning ring, a third hydraulic cylinder is arranged inside the positioning frame, and a clamping plate is arranged at the output end of the third hydraulic cylinder, a second slide groove is provided at the outer end of the positioning ring, and a displacement seat is arranged inside the second slide groove, a two-way screw is arranged at the outer end of the displacement seat, the inner side of the clamping plate clamps the frame, a shuttle groove is provided on the inner side of the frame, and a pressure assembly is arranged at the top and bottom of the frame, a sixth hydraulic cylinder is arranged at the outer end of the frame, and the output end of the sixth hydraulic cylinder is connected to the positioning plate.

[0007] Furthermore, the placement table assembly includes a first hydraulic cylinder, a base, a second hydraulic cylinder, a retracted plate and a first slide groove, the output end of the first hydraulic cylinder is placed on the base, and the second hydraulic cylinder is placed on the inner side of the base, the output end of the second hydraulic cylinder is provided with a retracted plate, and the first slide groove is opened on both sides of the outside of the base.

[0008] Furthermore, the retracted plate rises and falls along with the second hydraulic cylinder, and the highest point of the retracted plate is flush with the top surface of the pedestal.

[0009] Furthermore, the pressure sensing component includes a sliding seat, a pressure sensing box, a pressure spring, a lead screw, a twisting seat, a pressure sensor, a synchronous seat, a reset spring and an electromagnet. The outer end of the sliding seat is provided with a pressure sensing box, and the synchronous seat is arranged inside the pressure sensing box. A pressure spring is arranged between the pressure sensing box and the synchronous seat. A lead screw is arranged on the inner side of the bottom of the pressure sensing box, and the twisting seat is arranged at the bottom end of the lead screw. A pressure sensor is arranged on the top of the lead screw, a reset spring is arranged on the inner side of the top of the synchronous seat, and an electromagnet is arranged on the outer end of the reset spring.

[0010] Furthermore, the sliding seat slides inside the first sliding groove, and the sliding seats are distributed in an array shape inside the first sliding groove.

[0011] Furthermore, the pressure spring is elastically connected to the synchronous seat, and the synchronous seat is sleeve-connected to the pressure sensing box.

[0012] Furthermore, the return spring is elastically connected to the electromagnet, and the electromagnet and the sliding seat are distributed in parallel.

[0013] Furthermore, the pressure assembly includes a fourth hydraulic cylinder, a first pressure head, a fifth hydraulic cylinder and a second pressure head, the output end of the fourth hydraulic cylinder is connected to the first pressure head, the top and bottom ends of the frame are provided with a fifth hydraulic cylinder, and the output end of the fifth hydraulic cylinder is connected to the second pressure head.

[0014] Furthermore, the electromagnet is electromagnetically adsorbed and connected to the first pressure head, and the second pressure head is arranged inside the first pressure head.

[0015] Furthermore, the width of the second pressure head is consistent with the width of the retracted plate, and the width of the first pressure head is consistent with the width of the base.

[0016] The present invention provides a precisely positioned compression testing device for electric vehicle frame processing, which has the following beneficial effects:

[0017] 1. After the vehicle frame of the present invention is moved to the inside of the frame, the third hydraulic cylinder on the inner side of the positioning frames at both ends of the equipment works to drive the clamping plate to move and clamp the vehicle frame. The auxiliary clamping of the clamping plate can effectively prevent the vehicle frame from being deviated during the pressure detection process. When the clamping plate is clamping the vehicle frame, if the pressure-applying position of the vehicle frame is deviated, the third hydraulic cylinder of one of the two groups of positioning assemblies on the left and right will retreat to release the clamping of the clamping plate and the vehicle frame, so that only one group of positioning assemblies will clamp the vehicle frame. At this time, the displacement seat is driven to move by the two-way screw, so that the positioning assembly can drive the vehicle frame to move and adjust the deviation. If the displacement amount of the two-way screw at one time cannot make the frame complete the deviation adjustment, the first The operation of the hydraulic cylinder and the fifth hydraulic cylinder can make the pedestal and the first pressure head fit with the frame to clamp the frame. At this time, the positioning assembly can loosen the clamping plate on the frame and reset it through the two-way screw. Through this operation, the equipment can cope with the frame adjustment when there is a large offset. In addition, through this design, the frame can be flexibly displaced on the inside of the equipment during the detection process, which allows the equipment to flexibly intercept multiple points on the surface of the frame for compression testing. The sixth hydraulic cylinder and positioning plate outside the frame can perform auxiliary positioning when the frame is subjected to side compression testing (two sets of positioning assemblies cannot clamp the frame at the same time during side testing), which can greatly improve the detection flexibility and detection range of the equipment.

[0018] 2. The present invention drives the transmission gear to rotate through a motor, and can drive the positioning ring to rotate by meshing with the tooth groove. The positioning ring is connected with the displacement seat through the second slide groove, which can avoid interference between the positioning ring and the displacement seat when rotating. By rotating the positioning ring, the positioning ring can drive the frame to adjust the inclination, which can avoid the situation where the inclination error of the frame causes uneven pressure during the compression test and affects the test result. By rotating the positioning rings at both ends in opposite directions, the positioning rings can apply shear force to the frame. Through this design, the equipment can realize torque detection of the frame while performing compression detection, which enables the equipment to improve the detection items of the equipment while being able to perform precise positioning.

[0019] 3. When the first pressure head of the present invention contacts the frame, the electromagnet is energized to work, so that the electromagnet can pull the reset spring to fit with the first pressure head due to the adsorption force. In the process of the first pressure head applying pressure, a displacement force will be generated downward. If the frame compression test fails, the first pressure head will be displaced downward due to flattening the frame. At this time, the electromagnet will be displaced synchronously with the first pressure head. In the process of the electromagnet moving downward, it can drive the synchronous seat to squeeze the pressure spring and move downward synchronously. In the process of the synchronous seat moving downward, it can squeeze the pressure sensor. Through this design, the staff only needs to observe whether the pressure sensor detects pressure to quickly and intuitively detect the compression resistance of the frame. In addition, because the pressure sensing component is connected to the first pressure head through the electromagnet, when the frame quality is poor and the first pressure head moves downward too fast, the synchronous seat can The pressure absorption of the pressure spring and the displacement of the electromagnet at the outer end of the first pressure head avoid pressure damage to the pressure sensor, which can improve the stability of the equipment. The height of the pressure sensor can be adjusted by rotating the screw seat to rotate the screw inside the pressure sensor box. This allows the equipment to adjust the sensing sensitivity of the pressure sensor according to different detection standards, which makes the use of the equipment more flexible. Through the operation of the second hydraulic cylinder, the retracted plate can be retracted into the inside of the base, and through the operation of the fifth hydraulic cylinder, the second pressure head can be extended out of the first pressure head. This allows the equipment to be changed from plane pressure resistance detection to single-point pressure resistance detection, which further improves the detection range of the equipment. Because the retracted plate and the second pressure head are respectively located inside the base and the first pressure head, the pressure sensing component can still be used to measure the pressure resistance performance during the single-point pressure resistance detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front-view stereoscopic structural schematic diagram of a precisely positioned compression resistance detection device for processing an electric vehicle frame according to the present invention;

[0021] Figure 2 It is a rear-view stereoscopic structural schematic diagram of a precisely positioned compression resistance detection device for processing an electric vehicle frame according to the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a positioning component of a precisely positioned compression testing device for processing an electric vehicle frame according to the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a pressure component of a precisely positioned pressure-resistant testing device for processing an electric vehicle frame according to the present invention;

[0024] Figure 5 This is a schematic cross-sectional structure diagram of a pressure component of a precisely positioned pressure-resistant testing device for processing an electric vehicle frame according to the present invention;

[0025] Figure 6This is a schematic diagram of the structure of a placement platform assembly of a precisely positioned compression testing device for electric vehicle frame processing according to the present invention;

[0026] Figure 7 It is a schematic cross-sectional structural diagram of a placement platform assembly of a precisely positioned compression testing device for electric vehicle frame processing according to the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of a pressure sensing component of a precisely positioned anti-compression detection device for processing an electric vehicle frame according to the present invention;

[0028] Fig. 9 This is a schematic diagram of the structure of a pressure sensor of a precisely positioned compression testing device for processing an electric vehicle frame according to the present invention.

[0029] In the figure: 1, detection base; 2, frame; 3, placement platform assembly; 301, first hydraulic cylinder; 302, platform; 303, second hydraulic cylinder; 304, retracting plate; 305, first slide; 4, pressure sensing assembly; 401, sliding seat; 402, pressure sensing box; 403, pressure spring; 404, lead screw; 405, twisting seat; 406, pressure sensor; 407, synchronous seat; 408, reset spring; 409, electromagnet; 5, motor; 6, transmission Moving gear; 7, positioning assembly; 701, positioning ring; 702, tooth groove; 703, positioning frame; 704, third hydraulic cylinder; 705, clamping plate; 706, second slide groove; 707, displacement seat; 708, two-way screw; 8, frame; 9, shuttle groove; 10, pressure assembly; 1001, fourth hydraulic cylinder; 1002, first pressure head; 1003, fifth hydraulic cylinder; 1004, second pressure head; 11, sixth hydraulic cylinder; 12, positioning plate. DETAILED DESCRIPTION

[0030] See also Figures 1 to 9The present invention provides a technical solution: a precisely positioned pressure-resistant detection device for processing an electric vehicle frame, comprising a detection base 1, a pressure-sensing component 4 and a positioning component 7, wherein a frame 2 is arranged at the top outer end of the detection base 1, and a placement platform component 3 is arranged at the top middle end of the detection base 1, and pressure-sensing components 4 are arranged on both sides of the outside of the placement platform component 3, a motor 5 is arranged at the outer end of the frame 2, and a transmission gear 6 is arranged at the output end of the motor 5, and a positioning component 7 is arranged on the inner side of the frame 2, and the positioning component 7 comprises a positioning ring 701, a tooth groove 702, a positioning frame 703, a third hydraulic cylinder 704, a clamping plate 705, a second slide groove 706, a displacement seat 707 and a bidirectional lead screw 708, and the positioning ring 70 1 is provided with a tooth groove 702, and a positioning frame 703 is arranged on the upper and lower sides of the positioning ring 701, a third hydraulic cylinder 704 is arranged inside the positioning frame 703, and a clamping plate 705 is arranged at the output end of the third hydraulic cylinder 704, a second slide groove 706 is provided at the outer end of the positioning ring 701, and a displacement seat 707 is arranged inside the second slide groove 706, and a bidirectional lead screw 708 is arranged at the outer end of the displacement seat 707, the inner side of the clamping plate 705 clamps the frame 8, a shuttle groove 9 is provided on the inner side of the frame 2, and a pressure assembly 10 is arranged at the top and bottom of the frame 2, a sixth hydraulic cylinder 11 is arranged at the outer end of the frame 2, and the output end of the sixth hydraulic cylinder 11 is connected to the positioning plate 12.

[0031] See also Figures 1 to 9The placement platform assembly 3 includes a first hydraulic cylinder 301, a pedestal 302, a second hydraulic cylinder 303, a retracting plate 304 and a first slide groove 305. The output end of the first hydraulic cylinder 301 is provided with a pedestal 302, and the inner side of the pedestal 302 is provided with a second hydraulic cylinder 303. The output end of the second hydraulic cylinder 303 is provided with a retracting plate 304. The outer sides of the pedestal 302 are provided with first slide grooves 305. The retracting plate 304 rises and falls with the second hydraulic cylinder 303, and the highest position of the retracting plate 304 is flush with the top surface of the pedestal 302. The pressure sensing assembly 4 includes a sliding seat 40 1. A pressure-sensing box 402, a pressure spring 403, a lead screw 404, a twisting seat 405, a pressure sensor 406, a synchronous seat 407, a return spring 408 and an electromagnet 409. The outer end of the sliding seat 401 is provided with a pressure-sensing box 402, and the synchronous seat 407 is arranged inside the pressure-sensing box 402. A pressure spring 403 is arranged between the pressure-sensing box 402 and the synchronous seat 407. A lead screw 404 is arranged on the inner side of the bottom of the pressure-sensing box 402, and a twisting seat 405 is arranged at the bottom end of the lead screw 404. A pressure sensor 406 is arranged on the top of the lead screw 404. The synchronous seat 407 is provided with a return spring 408 and an electromagnet 409. A return spring 408 is arranged on the inner side of the top of 7, and an electromagnet 409 is arranged on the outer end of the return spring 408, the sliding seat 401 slides inside the first slide groove 305, and the sliding seat 401 is arranged in an array shape inside the first slide groove 305, the pressure spring 403 is elastically connected to the synchronous seat 407, and the synchronous seat 407 is sleeve-connected to the pressure sensing box 402, the return spring 408 is elastically connected to the electromagnet 409, and the electromagnet 409 is arranged in parallel with the sliding seat 401, and the pressure assembly 10 includes a fourth hydraulic cylinder 1001, a first pressure head 1002, and a first pressure head 1003. The fifth hydraulic cylinder 1003 and the second pressure head 1004, the output end of the fourth hydraulic cylinder 1001 is connected to the first pressure head 1002, the fifth hydraulic cylinder 1003 is arranged at the top bottom of the frame 2, and the output end of the fifth hydraulic cylinder 1003 is connected to the second pressure head 1004, the electromagnet 409 is electromagnetically adsorbed and connected to the first pressure head 1002, and the second pressure head 1004 is arranged inside the first pressure head 1002, the width of the second pressure head 1004 is consistent with the width of the retracted plate 304, and the width of the first pressure head 1002 is consistent with the width of the pedestal 302;

[0032] The specific operation is as follows. The staff uses a manipulator to extend the frame 8 that needs to be tested into the shuttle slot 9 and push it inward, so that the frame 8 can be moved to the inside of the frame 2. After the frame 8 is moved to the inside of the frame 2, the third hydraulic cylinder 704 on the inner side of the positioning frames 703 at both ends of the equipment works, which can drive the clamping plate 705 to move and clamp the frame 8. The auxiliary clamping of the clamping plate 705 can effectively prevent the frame 8 from being offset during the pressure detection process. When the clamping plate 705 clamps the frame 8, if the pressure position of the frame 8 is skewed, the third hydraulic cylinder 704 of one of the two groups of positioning components 7 on the left and right will retreat, so that the clamping plate 705 and the frame 8 are released, so that only one group of positioning components 7 clamps the frame 8. When the displacement seat 707 is displaced by the bidirectional lead screw 708, the positioning assembly 7 can drive the frame 8 to be displaced and adjusted. If the displacement of the bidirectional lead screw 708 at one time is not enough to complete the adjustment of the frame 8, the first hydraulic cylinder 301 and the fifth hydraulic cylinder 1003 can make the pedestal 302 and the first pressure head 1002 fit with the frame 8 to clamp the frame 8. At this time, the positioning assembly 7 can release the clamping plate 705 on the frame 8 and reset it through the bidirectional lead screw 708. Through this operation, the equipment can cope with the adjustment of the frame 8 with a large offset. In addition, through this design, the frame 8 can be flexibly displaced on the inside of the equipment during the detection process, which allows the equipment to flexibly intercept multiple locations on the surface of the frame 8 for compression resistance testing. The frame 2 The sixth hydraulic cylinder 11 and the positioning plate 12 outside can assist in positioning when the frame 8 is subjected to side compression testing (the two sets of positioning components 7 cannot clamp the frame 8 at the same time during side testing), which can greatly improve the detection flexibility and detection range of the equipment. By driving the transmission gear 6 to rotate through the motor 5, the transmission gear 6 can drive the positioning ring 701 to rotate through the engagement with the tooth groove 702. The positioning ring 701 is connected with the displacement seat 707 through the second slide groove 706, which can avoid the interference between the positioning ring 701 and the displacement seat 707 when rotating. By rotating the positioning ring 701, the positioning ring 701 can drive the frame 8 to adjust the inclination, which can avoid the inclination error of the frame 8 causing uneven pressure during compression testing to affect the test results. The situation occurs, and by rotating the positioning rings 701 at both ends in opposite directions, the positioning rings 701 can apply shear force to the frame 8. Through this design, the device can realize torque detection of the frame 8 while performing pressure resistance detection, which enables the device to improve the detection items of the device while performing precise positioning. After the positioning of the frame 8 is completed, the first hydraulic cylinder 301 works to drive the pedestal 302 to fit with the bottom end of the frame 8, and the fourth hydraulic cylinder 1001 works to drive the first pressure head 1002 to contact with the frame 8, so as to realize the pressure resistance detection of the frame 8. When the first pressure head 1002 contacts with the frame 8, the electromagnet 409 is energized to work, so that the electromagnet 409 can pull the reset spring 408 to fit with the first pressure head 1002 due to the adsorption force.During the process of the first pressure head 1002 applying pressure, a displacement force will be generated downward. If the frame 8 fails the compression test, the first pressure head 1002 will be displaced downward due to the flattening of the frame 8. At this time, the electromagnet 409 will be displaced synchronously with the first pressure head 1002. During the downward movement of the electromagnet 409, it can drive the synchronous seat 407 to squeeze the pressure spring 403 and move downward synchronously, and the synchronous seat 407 can squeeze the pressure sensor 406 during the downward movement. Through this design, the staff only needs to observe whether the pressure sensor 406 detects pressure to quickly and intuitively detect the compression resistance of the frame 8. In addition, because the pressure sensing component 4 is connected to the first pressure head 1002 through the electromagnet 409, when the quality of the frame 8 is poor and the first pressure head 1002 moves downward too fast, the synchronous seat 407 can absorb the pressure of the pressure spring 403 and the electromagnet 409 at the outer end of the first pressure head 1002 The displacement avoids the pressure loss of the pressure sensor 406, which can improve the stability of the device. The height of the pressure sensor 406 can be adjusted by rotating the screw seat 405 to rotate the lead screw 404 inside the pressure sensing box 402, which enables the device to adjust the sensitivity of the pressure sensor 406 according to different detection standards, which makes the use of the device more flexible. The retracted plate 304 can be retracted into the inside of the pedestal 302 by the operation of the second hydraulic cylinder 303, and the second pressure head 1004 can be extended from the first pressure head 1002 by the operation of the fifth hydraulic cylinder 1003, which enables the device to change from a plane pressure resistance test to a single-point pressure-type pressure resistance test, which further improves the detection range of the device. Because the retracted plate 304 and the second pressure head 1004 are respectively located inside the pedestal 302 and the first pressure head 1002, the pressure sensing component 4 can still be used to measure the pressure resistance performance during the single-point pressure-type pressure resistance test.

[0033] In summary, when using this precisely positioned pressure-resistant testing device for processing electric vehicle frames, the staff first uses a manipulator to extend the frame 8 to be tested into the shuttle slot 9 and pushes it inward, so that the frame 8 can be moved to the inside of the frame 2. After the frame 8 is moved to the inside of the frame 2, the third hydraulic cylinder 704 on the inner side of the positioning frame 703 at both ends of the equipment works, which can drive the clamping plate 705 to move and clamp the frame 8. Through the auxiliary clamping of the clamping plate 705, the frame 8 can be effectively prevented from being offset during the pressure detection process;

[0034] Then, when the clamping plate 705 clamps the frame 8, if the pressure position of the frame 8 is skewed, the third hydraulic cylinder 704 of one of the left and right positioning assemblies 7 retreats to release the clamping of the clamping plate 705 and the frame 8, so that only one group of positioning assemblies 7 clamps the frame 8. At this time, the displacement seat 707 is driven to move by the two-way screw 708, so that the positioning assembly 7 can drive the frame 8 to move and adjust the deviation. If the displacement amount of the two-way screw 708 at one time cannot make the frame 8 complete the deviation adjustment, the first hydraulic cylinder 301 and the fifth hydraulic cylinder 1003 can work to make the pedestal 302 and the first pressure head 1002 fit with the frame 8 to achieve alignment. The frame 8 is clamped, and at this time, the positioning assembly 7 can release the clamping plate 705 from the frame 8 and reset it through the bidirectional lead screw 708. Through this operation, the device can adjust the frame 8 when it is offset to a large extent. In addition, through this design, the frame 8 can be flexibly displaced inside the device during the detection process, which enables the device to flexibly intercept multiple points on the surface of the frame 8 for compression testing. The sixth hydraulic cylinder 11 and the positioning plate 12 outside the frame 2 can assist in positioning the frame 8 when the side compression test is performed (the two sets of positioning assemblies 7 cannot clamp the frame 8 at the same time during the side test), which can greatly improve the detection flexibility and detection range of the device;

[0035] Then, the transmission gear 6 is driven to rotate by the motor 5, so that the transmission gear 6 can drive the positioning ring 701 to rotate by meshing with the tooth groove 702, and the positioning ring 701 is connected with the displacement seat 707 through the second slide groove 706, which can avoid the interference between the positioning ring 701 and the displacement seat 707 when the positioning ring 701 rotates, and by rotating the positioning ring 701, the positioning ring 701 can drive the frame 8 to adjust the inclination, which can avoid the situation that the inclination error of the frame 8 causes uneven pressure during the compression test to affect the test result, and by rotating the positioning rings 701 at both ends in opposite directions, the positioning rings 701 can apply shear force to the frame 8. Through this design, the device can realize torque detection of the frame 8 while performing compression detection, which enables the device to improve the detection items of the device while being able to perform precise positioning;

[0036] After the positioning of the frame 8 is completed, the first hydraulic cylinder 301 works to drive the pedestal 302 to fit with the bottom end of the frame 8, and the fourth hydraulic cylinder 1001 works to drive the first pressure head 1002 to contact with the frame 8, so as to realize the pressure resistance test of the frame 8. When the first pressure head 1002 contacts with the frame 8, the electromagnet 409 is energized to work, so that the electromagnet 409 can pull the reset spring 408 to fit with the first pressure head 1002 due to the adsorption force. In the process of the first pressure head 1002 applying pressure, a displacement force is generated downward. If the pressure resistance test of the frame 8 fails, the first pressure head 1002 will be displaced downward due to the flattening of the frame 8. At this time, the electromagnet 409 will be displaced synchronously with the first pressure head 1002. In the process of moving downward, the electromagnet 409 can drive the synchronous seat 407 to squeeze the pressure spring 403 and move downward synchronously, and the synchronous seat 407 is During the downward movement, the pressure sensor 406 can be squeezed. With this design, the staff only needs to observe whether the pressure sensor 406 detects pressure to quickly and intuitively detect the pressure resistance of the frame 8. In addition, because the pressure sensing component 4 is connected to the first pressure head 1002 through the electromagnet 409, when the quality of the frame 8 is poor and the first pressure head 1002 moves downward too fast, the synchronous seat 407 can avoid pressure damage to the pressure sensor 406 due to the pressure absorption of the pressure spring 403 and the displacement of the electromagnet 409 at the outer end of the first pressure head 1002, which can improve the stability of the device. By rotating the screw seat 405 to rotate the screw 404 inside the pressure sensing box 402, the height of the pressure sensor 406 can be adjusted, which enables the device to adjust the sensitivity of the pressure sensor 406 according to different detection standards, making the device more flexible to use.

[0037] Finally, the retractable plate 304 can be retracted into the base 302 by the operation of the second hydraulic cylinder 303, and the second pressure head 1004 can be extended out of the first pressure head 1002 by the operation of the fifth hydraulic cylinder 1003. This allows the device to be changed from a plane pressure resistance test to a single-point pressure-type pressure resistance test, which further improves the detection range of the device. Since the retractable plate 304 and the second pressure head 1004 are respectively located in the base 302 and the first pressure head 1002, the pressure sensing component 4 can still be used to measure the pressure resistance performance during the single-point pressure-type pressure resistance test.

[0038] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A precisely positioned compression testing device for electric vehicle frame processing, characterized in that: The invention comprises a detection base (1), a pressure sensing component (4) and a positioning component (7); a frame (2) is arranged at the outer end of the top of the detection base (1); a placement platform component (3) is arranged at the middle end of the top of the detection base (1); pressure sensing components (4) are arranged on both sides of the outside of the placement platform component (3); a motor (5) is arranged at the outer end of the frame (2); a transmission gear (6) is arranged at the output end of the motor (5); a positioning component (7) is arranged on the inner side of the frame (2); the positioning component (7) comprises a positioning ring (701), a tooth groove (702), a positioning frame (703), a third hydraulic cylinder (704), a clamping plate (705), a second slide groove (706), a displacement seat (707) and a bidirectional lead screw (708); a tooth groove (702) is provided at the outer end of the positioning ring (701) , and positioning frames (703) are arranged on the upper and lower sides of the positioning ring (701), a third hydraulic cylinder (704) is arranged inside the positioning frame (703), and a clamping plate (705) is arranged at the output end of the third hydraulic cylinder (704), a second slide groove (706) is opened at the outer end of the positioning ring (701), and a displacement seat (707) is arranged inside the second slide groove (706), and a bidirectional screw (708) is arranged at the outer end of the displacement seat (707), the inner side of the clamping plate (705) clamps the vehicle frame (8), the inner side of the frame (2) is opened with a shuttle groove (9), and a pressure assembly (10) is arranged at the top and bottom of the frame (2), and a sixth hydraulic cylinder (11) is arranged at the outer end of the frame (2), and the output end of the sixth hydraulic cylinder (11) is connected to the positioning plate (12).

2. According to the precise positioning compression testing device for electric vehicle frame processing according to claim 1, it is characterized in that: The placement platform assembly (3) comprises a first hydraulic cylinder (301), a platform (302), a second hydraulic cylinder (303), a retracting plate (304) and a first slide groove (305); the platform (302) is placed at the output end of the first hydraulic cylinder (301), and the second hydraulic cylinder (303) is placed on the inner side of the platform (302); the retracting plate (304) is arranged at the output end of the second hydraulic cylinder (303), and the first slide groove (305) is opened on both sides of the outside of the platform (302).

3. According to claim 2, a precisely positioned compression testing device for electric vehicle frame processing, characterized in that: The retracted plate (304) moves up and down along with the second hydraulic cylinder (303), and the highest point of the retracted plate (304) is flush with the top surface of the pedestal (302).

4. According to claim 2, a precisely positioned compression testing device for electric vehicle frame processing is characterized in that: The pressure sensing assembly (4) comprises a sliding seat (401), a pressure sensing box (402), a pressure spring (403), a lead screw (404), a twisting seat (405), a pressure sensor (406), a synchronous seat (407), a reset spring (408) and an electromagnet (409). The outer end of the sliding seat (401) is provided with a pressure sensing box (402), and the synchronous seat (407) is arranged inside the pressure sensing box (402). ) and a synchronous seat (407), a pressure spring (403) is arranged between the bottom inner side of the pressure sensing box (402), a lead screw (404) is arranged on the bottom inner side of the lead screw (404), a screwing seat (405) is arranged on the bottom end of the lead screw (404), a pressure sensor (406) is arranged on the top end of the lead screw (404), a return spring (408) is arranged on the top inner side of the synchronous seat (407), and an electromagnet (409) is arranged on the outer end of the return spring (408).

5. The precisely positioned compression testing device for electric vehicle frame processing according to claim 4 is characterized in that: The sliding seat (401) slides inside the first sliding groove (305), and the sliding seats (401) are distributed in an array shape inside the first sliding groove (305).

6. The precisely positioned compression testing device for electric vehicle frame processing according to claim 4 is characterized in that: The pressure spring (403) is elastically connected to the synchronous seat (407), and the synchronous seat (407) is sleeve-connected to the pressure sensing box (402).

7. The precisely positioned compression testing device for electric vehicle frame processing according to claim 4 is characterized in that: The return spring (408) is elastically connected to the electromagnet (409), and the electromagnet (409) and the sliding seat (401) are distributed in parallel.

8. The precisely positioned compression testing device for electric vehicle frame processing according to claim 4 is characterized in that: The pressure assembly (10) comprises a fourth hydraulic cylinder (1001), a first pressure head (1002), a fifth hydraulic cylinder (1003) and a second pressure head (1004); the output end of the fourth hydraulic cylinder (1001) is connected to the first pressure head (1002); the fifth hydraulic cylinder (1003) is arranged at the top and bottom ends of the frame (2); and the output end of the fifth hydraulic cylinder (1003) is connected to the second pressure head (1004).

9. The precisely positioned compression testing device for electric vehicle frame processing according to claim 9 is characterized in that: The electromagnet (409) is electromagnetically adsorbed and connected to the first pressure head (1002), and the second pressure head (1004) is arranged inside the first pressure head (1002).

10. The precisely positioned compression testing device for electric vehicle frame processing according to claim 9, characterized in that: The width of the second pressure head (1004) is consistent with the width of the retracted plate (304), and the width of the first pressure head (1002) is consistent with the width of the platform (302).

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