An automobile component testing device

Abstract

The application discloses a kind of automobile parts testing device, it is related to automobile parts testing technical field, including base and support, the inside of base is equipped with driving mechanism, the output part of driving mechanism is connected with the first clutch mechanism between lifting mechanism, torsion shaft is equipped with transmission mechanism between the first clutch mechanism, transmission mechanism is equipped with the second clutch mechanism between torsion shaft, clamp includes chucking seat, the inside of chucking groove is slidably connected with two symmetrical distribution clamping blocks, the inside of chucking seat is equipped with compression mechanism, connecting seat is equipped with tension buffer mechanism and torsion tensioning mechanism respectively.The application can carry out tension test and torsion test, so it is no longer necessary to prepare two test instruments, and the test cost can be reduced;Moreover, the clamping stability of clamp can be improved, relative sliding or rotation between clamps and workpieces is avoided, so that the clamp and workpiece are not loosened during tension test or torsion test, and the normal tension test is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts testing, and particularly relates to an automobile parts testing device. BACKGROUND

[0002] With the increasingly fierce competition in the automobile parts processing market, and the continuous upgrading and application of technology, the automobile parts processing system is matched, the modularization supply trend is in full swing, the automobile parts processing industry is moving at a faster speed, and the types of automobile parts are various. In the automobile parts production process, performance testing of the parts is also an important link. For example, plastic plates, pipes, special-shaped materials, rubber, and wire and cable parts need to be subjected to tensile test and torsion test during the research and development stage.

[0003] When the above-mentioned parts need to be subjected to tensile test, a special tensile testing machine is usually used, and when the parts need to be subjected to torsion test, a special torsion testing machine is usually used. Therefore, in order to meet the demand, two instruments, i.e. a tensile testing machine and a torsion testing machine, need to be equipped, which undoubtedly leads to high test cost. In addition, the clamping of the tested workpiece by the traditional tensile testing machine and the torsion testing machine is still not stable enough, and relative sliding between the clamp and the tested workpiece is prone to occur during the experiment, which is likely to affect the test result. SUMMARY

[0004] The present application aims to solve the problem that two instruments, i.e. a tensile testing machine and a torsion testing machine, need to be equipped to perform tensile test and torsion test, which leads to high test cost, and the clamping force of the testing machine on the tested workpiece is not stable enough.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] The application discloses an automobile part testing device which comprises a base and a support, a lifting beam is slidably connected to the support, a lifting mechanism is arranged on the support and connected with the lifting beam, clamps are arranged on the lifting beam and the base, a driving mechanism is arranged in the base, a first clutch mechanism is connected between the output of the driving mechanism and the lifting mechanism, is used for controlling the transmission clutch between the driving mechanism and the lifting mechanism, a torsion shaft is arranged at the lower part of the clamp on the base, a transmission mechanism is arranged between the torsion shaft and the first clutch mechanism, is used for driving the torsion shaft to rotate, a second clutch mechanism is arranged between the transmission mechanism and the torsion shaft, is used for controlling the transmission clutch between the transmission mechanism and the torsion shaft; a lifting frame is arranged in the base, the first clutch mechanism and the second clutch mechanism are arranged on the lifting frame, and a pneumatic cylinder is arranged between the lifting frame and the base, is used for switching the clutch state of the first clutch mechanism and the second clutch mechanism; the clamp comprises a clamping seat, an isosceles trapezoidal clamping groove is arranged at the upper part of the clamping seat, two symmetrical clamping blocks are slidably connected to the two sides of the clamping groove, are used for clamping and fixing the measured workpiece, a pressing mechanism is arranged in the clamping seat, is used for further clamping and fixing the measured workpiece during the test; a T-shaped connecting seat is arranged at the lower part of the clamping seat, a tensioning and buffering mechanism and a torsion tensioning mechanism are arranged on the connecting seat respectively, the tensioning and buffering mechanism is used for driving the pressing mechanism during tension test, and the torsion tensioning mechanism is used for driving the pressing mechanism during torsion test.

[0007] In some embodiments, the lifting mechanism comprises two lead screws, the two lead screws are rotatably connected to the two sides of the support respectively, and a lead screw nut is transmissionally connected to each of the two lead screws, and the lifting beam is fixedly connected between the two lead screw nuts.

[0008] In some embodiments, the driving mechanism comprises a first transmission wheel, a second transmission wheel, a servo motor and two third transmission wheels, the output end of the servo motor is transmissionally connected with the first transmission wheel, the first transmission wheel and the second transmission wheel are transmissionally connected with a first synchronous belt, the lower part of the second transmission wheel is transmissionally connected with a fourth transmission wheel, and the fourth transmission wheel and the two third transmission wheels are transmissionally connected with a second synchronous belt.

[0009] In some embodiments, the first clutch mechanism comprises two first spline shafts and two second spline shafts, the two first spline shafts are fixedly connected with the two third transmission wheels respectively, the two second spline shafts are fixedly connected with the lower ends of the lead screws respectively, the two first spline shafts and the two second spline shafts are coaxially corresponding one by one, a first spline sleeve is sleeved with the upper part of the first spline shaft, a first sleeve is sleeved with the outer part of the first spline sleeve and fixedly connected with the lifting frame, and a first return spring is connected between the first spline sleeve and the first sleeve.

[0010] In some embodiments, the second clutching mechanism comprises a sleeve shaft sleeved outside the torsion shaft, a third spline shaft, and a fourth spline shaft fixed to the lower part of the torsion shaft, the lower part of the third spline shaft is drivingly sleeved with a second spline sleeve, the outside of the second spline sleeve is sleeved with a second sleeve connected with the lifting frame, and the second spline sleeve and the second sleeve are connected with a second return spring.

[0011] In some embodiments, the transmission mechanism comprises a sixth transmission wheel and two fifth transmission wheels, the third synchronous belt is drivingly connected between the two fifth transmission wheels and the sixth transmission wheel, the first spline sleeve and the sleeve shaft are both in the shape of a regular hexagonal prism, the two fifth transmission wheels are drivingly sleeved outside the two first spline sleeves respectively, and the sixth transmission wheel is drivingly sleeved outside the sleeve shaft, the support frame is fixedly connected in the base, and the two fifth transmission wheels and the sixth transmission wheel are both rotatably connected to the support frame.

[0012] In some embodiments, the pressing mechanism comprises two pressing blocks, two pressing rods, and two pull rods, the two pressing blocks are symmetrically distributed and are respectively slidingly connected to the two clamping blocks in the transverse direction, the two pressing rods are symmetrically distributed and are respectively slidingly connected to the inside of the clamping seat in the transverse direction, the first connecting pin and the second connecting pin are respectively arranged on the pressing rod, the outer side of the pressing block is provided with an inclined sliding groove, the first connecting pin is inserted into the sliding groove, the two pull rods are symmetrically distributed and are respectively slidingly connected to the clamping seat in the vertical direction, and the upper end of the pull rod is provided with an inclined extrusion groove, and the second connecting pin is inserted into the inside of the extrusion groove.

[0013] In some embodiments, the tensioning buffer mechanism comprises a buffer rod fixedly connected to the lower part of the clamping seat, the upper part of the connecting seat is provided with a cavity, the lower part of the buffer rod is slidingly inserted into the cavity, the lower part of the buffer rod is fixedly connected with a limiting sleeve, and the buffer rod and the connecting seat are connected with a connecting spring.

[0014] In some embodiments, the torsion tensioning mechanism comprises a transmission disc and a connecting sleeve, the transmission disc is fixedly connected to the lower end of the buffer rod, and the outer surface of the transmission disc is provided with a transmission groove, the inner surface of the cavity is fixedly connected with a transmission block, the transmission block is slidingly connected to the transmission groove, the transmission disc and the connecting seat are connected with a spiral spring, the connecting sleeve is sleeved outside the connecting seat, the two sides of the connecting sleeve are respectively fixedly connected with the two pull rods, the outer surface of the connecting sleeve is provided with an inclined groove, the outer side of the connecting seat is fixedly connected with a fixed pin inserted into the inclined groove, and the inclined grooves on the upper and lower connecting sleeves are parallel.

[0015] In some embodiments, the two pull rods are both provided with a sliding mechanism, the sliding mechanism divides the pull rod into an upper rod and a lower rod, and the sliding mechanism comprises a guide rail and a sliding block, the guide rail is fixedly connected to the lower rod, the sliding block is fixedly connected to the lower rod, and the sliding block is slidingly connected to the guide rail.

[0016] Compared with the prior art, the present invention provides an automotive parts testing device, which has the following advantages:

[0017] 1. By coordinating the cylinder, the first clutch mechanism, and the second clutch mechanism, when the lead screw is connected to the drive mechanism, the transmission between the two can be disconnected by controlling the descent of the lifting frame. At the same time, the transmission between the torsion shaft and the drive mechanism will be automatically connected. At this time, the device can be switched from the tensile test mode to the torsion test mode, so that the device can freely switch between the tensile test mode and the torsion test mode. Thus, the device can perform both tensile and torsion tests, and therefore there is no need to prepare two test instruments, which can reduce the test cost to a certain extent.

[0018] 2. By combining the tensioning buffer mechanism and the clamping mechanism, during the tensile test, as tensioning progresses, the pressure block will press tightly against the outer surface of the workpiece, thereby further clamping and fixing the workpiece with the two pressure blocks. This effectively improves the clamping stability of the fixture and prevents relative sliding between the fixture and the workpiece, thus preventing the fixture from coming loose from the workpiece during the tensile test and ensuring the normal conduct of the tensile test.

[0019] 3. By coordinating the torsion tensioning mechanism and the clamping mechanism, during the torsion test, as the lower fixture deflects, it will also drive the pressure block to squeeze the workpiece. This will also cause the pressure blocks on both sides to clamp the workpiece, thereby improving the clamping stability of the lower fixture. It can effectively prevent relative rotation between the workpiece and the fixture, so that the fixture can tightly clamp the workpiece, thus ensuring the normal progress of the torsion test.

[0020] 4. Through the coordinated design of the adaptive spring and the sliding mechanism, the clamping block will contact the workpiece when clamping workpieces with different outer diameters. Therefore, in subsequent tests, the tensioning buffer mechanism and the torsion tensioning mechanism can still directly drive the two clamping blocks to clamp the workpiece. It can be seen that the clamping mechanism can clamp workpieces with different outer diameters, thereby improving its adaptability and practicality.

[0021] Other advantages, objectives and features of the invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be learned from practice of the invention. Attached Figure Description

[0022] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of a partial cross-sectional view of the present invention.

[0024] Figure 3 This is a schematic diagram of a partial sectional view of the base.

[0025] Figure 4 A three-dimensional structural diagram of the first and second clutch mechanisms;

[0026] Figure 5 A frontal sectional view of the first and second clutch mechanisms;

[0027] Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle;

[0028] Figure 7 This is a three-dimensional structural diagram of the transmission mechanism;

[0029] Figure 8 This is a frontal three-dimensional structural diagram of the lower fixture;

[0030] Figure 9 This is a rear-view three-dimensional structural diagram of the lower fixture;

[0031] Figure 10 This is a frontal three-dimensional structural diagram of the upper clamp;

[0032] Figure 11 This is a schematic diagram of the front sectional view of the fixture;

[0033] Figure 12 for Figure 11 Enlarged structural diagram at point B;

[0034] Figure 13 This is a three-dimensional structural diagram of the clamping mechanism;

[0035] Figure 14 This is a front sectional view of the connector.

[0036] Figure 15 A side view of the three-dimensional structure of the locking mechanism;

[0037] Figure 16 This is a top-view cross-sectional structural diagram of the transmission disc.

[0038] Figure 17 This is a top-view cross-sectional structural diagram of the helical spring.

[0039] Figure 18 A frontal three-dimensional structural diagram of the drive mechanism;

[0040] Figure 19 This is a bottom-view three-dimensional structural diagram of the drive mechanism.

[0041] In the figure: 1, base; 2, support; 3, lifting mechanism; 301, lead screw; 302, lead screw nut; 4, lifting crossbeam; 5, clamp; 501, clamping seat; 502, clamping groove; 503, clamping block; 504, guide pin; 505, guide groove; 506, empty groove; 7, driving mechanism; 701, first transmission wheel; 702, second transmission wheel; 703, first synchronous belt; 704, third transmission wheel; 705, fourth transmission wheel; 706, second synchronous belt; 707, support wheel; 708, tension wheel; 709, servo motor; 8, first clutch mechanism; 801, first spline shaft; 802, second spline shaft; 803, first spline sleeve; 8031, first limit protrusion; 804, first sleeve; 805, first return spring; 806, top cover; 9, torsion shaft; 10, support frame; 11, transmission mechanism; 1101, fifth transmission wheel; 1102, sixth transmission wheel; 1103, third synchronous belt; 12, second clutch mechanism; 1201, sleeve shaft; 1202, third spline shaft; 1203, second spline sleeve; 12031, second limit protrusion; 1204, second sleeve; 1205, second return spring; 1206, fourth spline shaft; 13, air cylinder; 14, lifting frame; 15, connecting seat; 1501, cavity; 16, pressing mechanism; 1601, pressing block; 1602, pressing rod; 1603, first connecting pin; 1604, sliding groove; 1605, second connecting pin; 1606, pull rod; 16061, upper rod; 16062, lower rod; 1607, extrusion groove; 1608, self-adaptive spring; 17, tensioning buffer mechanism; 1701, buffer rod; 1702, limit sleeve; 1703, connecting spring; 18, torsion tensioning mechanism; 1801, transmission disc; 1802, transmission block; 1803, transmission groove; 1804, connecting shaft; 1805, helical spring; 1806, connecting sleeve; 1807, inclined groove; 1808, fixing pin; 19, sliding mechanism; 1901, guide rail; 1902, sliding block; 20, locking mechanism; 2001, rack; 2002, connecting block; 2003, connecting groove; 2004, gear; 2005, handle; 2006, through groove; 2007, locking bolt; 2008, locking nut. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0043] REFERENCE Figures 1-3The utility model provides a kind of automobile parts testing device, including base 1 and support 2, support 2 is slidably connected with lifting beam 4, and support 2 is equipped with lifting mechanism 3 being connected with lifting beam 4, base 1 is equipped with clamp 5 with lifting beam 4, two clamps 5 are symmetrically distributed upside down, the inside of base 1 is equipped with driving mechanism 7, the output part of driving mechanism 7 is connected with the first clutch mechanism 8 between lifting mechanism 3, for control driving mechanism 7 and the transmission clutch between lifting mechanism 3, the lower part of clamp 5 located on base 1 is equipped with torsion shaft 9, torsion shaft 9 is rotatably installed on base 1 by thrust bearing, transmission mechanism 11 is equipped between torsion shaft 9 and the first clutch mechanism 8, for driving torsion shaft 9 rotation, second clutch mechanism 12 is equipped between transmission mechanism 11 and torsion shaft 9, for control transmission mechanism 11 and the transmission clutch between torsion shaft 9;

[0044] The inside of base 1 is slidably installed with lifting frame 14, the first clutch mechanism 8 and second clutch mechanism 12 are all equipped on lifting frame 14, and air cylinder 13 is equipped between lifting frame 14 and base 1, for switching the clutch state of first clutch mechanism 8 and second clutch mechanism 12;

[0045] Refer to Figures 8-11 , clamp 5 includes clamping seat 501, the upper portion of clamping seat 501 is equipped with isosceles trapezoidal clamping groove 502, two symmetrical distribution clamping blocks 503 are slidably connected in the inside of clamping groove 502, for the clamping and fixing of measured workpiece, and clamping block 503 can slide to oblique upper side or oblique lower side along the side of clamping groove 502, guiding pin 504 is fixedly installed on the back of clamping block 503, guiding groove 505 is formed on the back of clamping seat 501 and is matched with guiding pin 504, guiding pin 504 is slidably installed in guiding groove 505, for guiding the sliding of clamping block 503.

[0046] The lower part of clamping seat 501 is equipped with T-shaped connecting seat 15, tensioning buffer mechanism 17 and torsion tensioning mechanism 18 are respectively equipped on connecting seat 15, tensioning buffer mechanism 17 is used to drive pressure mechanism 16 when tension test, torsion tensioning mechanism 18 is used to drive pressure mechanism 16 when torsion test, and the lower connecting seat 15 is rotatably installed on base 1, and the upper connecting seat 15 is fixedly installed on lifting beam 4.

[0047] Refer to Figure 2 Lifting mechanism 3 includes two lead screws 301, two lead screws 301 are rotatably connected on the two sides of support 2, and lead screw nut 302 is drivingly connected on two lead screws 301, lifting beam 4 is fixedly connected between two lead screw nuts 302.

[0048] Refer to Figure 3 ,Figure 18 and Figure 19 The drive mechanism 7 includes a first drive wheel 701, a second drive wheel 702, a servo motor 709, and two third drive wheels 704. The first drive wheel 701, the second drive wheel 702, and the two third drive wheels 704 are all rotatably mounted in the base 1. The output end of the servo motor 709 is connected to the first drive wheel 701. A first synchronous belt 703 is connected between the first drive wheel 701 and the second drive wheel 702. A fourth drive wheel 705 is fixedly connected to the lower part of the second drive wheel 702. A second synchronous belt 706 is connected between the fourth drive wheel 705 and the two third drive wheels 704. Support wheels 707 and tension wheels 708 located on both sides of the fourth drive wheel 705 are also rotatably mounted in the base 1. The support wheels 707 and tension wheels 708 are both driven to abut against the outer surface of the second synchronous belt 706 to tension the second synchronous belt 706.

[0049] Reference Figures 4-6 The first clutch mechanism 8 includes two first splined shafts 801 and two second splined shafts 802. The two first splined shafts 801 are fixedly connected to two third transmission wheels 704 respectively. The two second splined shafts 802 are fixedly connected to the lower end of the lead screw 301 respectively. The two first splined shafts 801 and the two second splined shafts 802 are coaxially corresponding one to one. The upper part of the first splined shaft 801 is sleeved with a first splined sleeve 803. The outside of the first splined sleeve 803 is sleeved with a first sleeve 804 fixed on the lifting frame 14. A first return spring 805 is connected between the first splined sleeve 803 and the first sleeve 804. The lower part of the first splined sleeve 803 is fixed with a first limiting protrusion 8031. The upper part of the first sleeve 804 is fixed with a top cover 806 that abuts against the upper surface of the first limiting protrusion 8031.

[0050] Reference Figure 4 , Figure 5 and Figure 7 The second clutch mechanism 12 includes a sleeve shaft 1201 sleeved on the outside of the torsion shaft 9, a third spline shaft 1202, and a fourth spline shaft 1206 fixed to the lower part of the torsion shaft 9. The lower part of the third spline shaft 1202 is sleeved with a second spline sleeve 1203. The outside of the second spline sleeve 1203 is sleeved with a second sleeve 1204 fixedly connected to the lifting frame 14. A second return spring 1205 is connected between the second spline sleeve 1203 and the second sleeve 1204. The outside of the second spline sleeve 1203 is fixed with a second limiting protrusion 12031 abutting against the inner bottom wall of the second sleeve 1204.

[0051] Reference Figure 7The transmission mechanism 11 comprises a sixth transmission wheel 1102 and two fifth transmission wheels 1101, the third synchronous belt 1103 is in transmission connection between the two fifth transmission wheels 1101 and the sixth transmission wheel 1102, the first spline sleeve 803 and the sleeve shaft 1201 are both in the shape of a regular hexagonal prism, the two fifth transmission wheels 1101 are respectively in transmission sleeve connection on the outside of the two first spline sleeves 803, the sixth transmission wheel 1102 is in transmission sleeve connection on the outside of the sleeve shaft 1201, the support frame 10 is fixedly connected in the base 1, and the two fifth transmission wheels 1101 and the sixth transmission wheel 1102 are both rotationally connected on the support frame 10.

[0052] With reference to Figures 11-13 The pressing mechanism 16 comprises two pressing blocks 1601, two pressing rods 1602 and two pull rods 1606, the two pressing blocks 1601 are symmetrically distributed and are respectively in lateral sliding connection on the two clamping blocks 503, and the two sides of the clamping seat 501 are both provided with the air slots 506 matched with the pressing blocks 1601, for sliding of the pressing blocks 1601, the two pressing rods 1602 are symmetrically distributed and are respectively in lateral sliding connection in the inside of the clamping seat 501, the first connecting pin 1603 and the second connecting pin 1605 are respectively arranged on the pressing rod 1602, the outer side of the pressing block 1601 is provided with the inclined sliding groove 1604, the inclined direction of the sliding groove 1604 is parallel to the sliding direction when the clamping block 503 is clamped, the first connecting pin 1603 is inserted into the sliding groove 1604, and the two pull rods 1606 are symmetrically distributed and are respectively in vertical sliding connection on the clamping seat 501, and the upper end of the pull rod 1606 is provided with the inclined extrusion groove 1607, and the second connecting pin 1605 is inserted into the inside of the extrusion groove 1607.

[0053] With reference to Figures 14-17 The tension buffering mechanism 17 comprises the buffering rod 1701 fixedly connected to the lower part of the clamping seat 501, the upper part of the connecting seat 15 is provided with the cavity 1501, the lower part of the buffering rod 1701 is slidingly inserted into the cavity 1501, the lower part of the buffering rod 1701 is fixedly connected with the limiting sleeve 1702, and the buffering rod 1701 and the connecting seat 15 are connected with the connecting spring 1703.

[0054] The torsion tensioning mechanism 18 comprises a transmission disc 1801 and a connecting sleeve 1806, the transmission disc 1801 is disc-shaped and fixedly connected to the lower end of the buffer rod 1701, the outer surface of the transmission disc 1801 is provided with a transmission groove 1803, the inner surface of the cavity 1501 is fixedly connected with a transmission block 1802, the transmission block 1802 is slidingly connected in the transmission groove 1803, the lower surface of the transmission disc 1801 is fixedly connected with a connecting shaft 1804 which is rotatably installed on the connecting base 15, the connecting shaft 1804 is connected with the connecting base 15 through a helical spring 1805, the connecting sleeve 1806 is sleeved on the outer part of the connecting base 15, the outer surface of the connecting sleeve 1806 is provided with an inclined groove 1807, the outer part of the connecting base 15 is fixedly connected with a fixed pin 1808 which is inserted into the inclined groove 1807, and the inclined grooves 1807 on the upper and lower connecting sleeves 1806 are parallel.

[0055] With reference to Figure 12 With Figure 13 , the two pull rods 1606 are each provided with a sliding mechanism 19, the sliding mechanism 19 divides the pull rod 1606 into an upper rod 16061 and a lower rod 16062, and the sliding mechanism 19 comprises a guide rail 1901 and a sliding block 1902, the guide rail 1901 is provided with a T-shaped groove, and the guide rail 1901 is fixedly connected to the lower rod 16062, the sliding block 1902 is I-shaped and fixedly connected to the lower rod 16062, and the sliding block 1902 is slidingly connected to the T-shaped groove on the guide rail 1901, and the pressure rod 1602 and the clamping seat 501 are provided with an adaptive spring 1608

[0056] With reference to Figure 8 With Figure 15 , the outer part of the clamping seat 501 is provided with a locking mechanism 20 for controlling the two clamping blocks 503 to clamp and fix the measured workpiece, the locking mechanism 20 comprises a rack 2001, a gear 2004 and a locking bolt 2007, the rack 2001 is slidingly installed on the clamping seat 501 and the buffer rod 1701 in the vertical direction, and the upper end of the rack 2001 is fixedly connected with a connecting block 2002, the lower part of the clamping block 503 is provided with a connecting groove 2003 matched with the connecting block 2002, and the connecting block 2002 is inserted into the connecting groove 2003.

[0057] The gear 2004 is in meshing connection with the rack 2001 and is rotatably installed on the clamping seat 501, and the outer surface of the gear 2004 is fixedly connected with a handle 2005, the handle 2005 is provided with a through groove 2006, the locking bolt 2007 is rotatably installed on the buffer rod 1701 through a rotating shaft and penetrates the through groove 2006, and the locking bolt 2007 is screwedly connected with a locking nut 2008 abutting against the handle 2005.

[0058] In the present application, as Figure 6As shown, the first spline sleeve 803 in the first clutch mechanism 8 is simultaneously sleeved on the upper end of the first spline shaft 801 and the lower end of the second spline shaft 802 in the initial state. When the tensile test is needed, the upper and lower ends of the workpiece to be measured are respectively placed in the upper and lower clamping grooves 502, and the end of the workpiece to be measured is ensured to be located between the two clamping blocks 503, then the handle 2005 is pulled downward to drive the gear 2004 to rotate, at this time the gear 2004 can drive the clamping blocks 503 to slide upward through the rack 2001, the connecting block 2002 and the connecting groove 2003, at this time the two clamping blocks 503 slide relatively to the upper side at the same time, so as to clamp the end of the workpiece, then the locking nut 2008 is screwed to press on the upper surface of the handle 2005, so as to fix the gear 2004, and in this way the clamping block 503 is fixed, and then the workpiece is clamped and fixed on the two clamps 5.

[0059] Then the servo motor 709 is started, the output end of the servo motor 709 can drive the second transmission wheel 702 and the fourth transmission wheel 705 to rotate through the first transmission wheel 701 and the first synchronous belt 703, the fourth transmission wheel 705 drives the two third transmission wheels 704 to rotate synchronously and in the same direction through the second synchronous belt 706, at this time the third transmission wheel 704 can drive the two lead screws 301 to rotate through the first spline shaft 801, the first spline sleeve 803 and the second spline shaft 802, then the two lead screws 301 can drive the lifting beam 4 and the upper clamp 5 to move upward slowly through the lead screw nut 302, at this time the workpiece can be tested by the two clamps 5.

[0060] In the process of slowly moving the upper clamp 5 upwards for tension test, for the lower clamp 5, the clamping seat 501 can pull the buffer rod 1701 and the limiting sleeve 1702 to slide upwards on the cavity 1501 under the action of the tension, and compress the connecting spring 1703, so that the clamping seat 501 can slide on the connecting seat 15 and the distance between them increases during this process. Since the connecting sleeve 1806 is on the step bottom wall of the T-shaped connecting seat 15 at this time, the connecting sleeve 1806 and the pull rod 1606 are in a fixed state at this time, and when the clamping seat 501 slides on the connecting seat 15, it can also drive the compression rod 1602 to move synchronously, so it can also drive the second connecting pin 1605 to slide. In the process of sliding, the compression rod 1602 can be pushed to the direction of the workpiece under the extrusion of the inwardly inclined extrusion groove 1607, and the compression rod 1602 can extrude the pressing block 1601 through the first connecting pin 1603, so that the pressing block 1601 is tightly pressed on the outer surface of the workpiece, and then the two pressing blocks 1601 can further clamp and fix the workpiece, so as to effectively improve the clamping stability of the clamp 5. Similarly, for the upper clamp 5, the distance between the clamping seat 501 and the connecting seat 15 will also increase during the tensioning process. Therefore, the two pressing blocks 1601 inside will also further clamp the upper part of the workpiece. When the tension test is completed, the workpiece is removed, and the components can be reset under the rebound force of the connecting spring 1703, so as to facilitate subsequent testing.

[0061] When the torsion test is needed, the workpiece to be tested is clamped on the two clamps 5 according to the above operation, and then the cylinder 13 is started to drive the telescopic end to slide the lifting frame 14 downward by a certain distance. In this process, the lifting frame 14 can pull the first sleeve 804 and the top cover 806 downward to slide the first spline sleeve 803, so that the first spline sleeve 803 is separated from the second spline shaft 802, and the transmission between the driving mechanism 7 and the lead screw 301 is disconnected. Moreover, the sleeve shaft 1201, the third spline shaft 1202 and the second sleeve 1204 are also moved downward synchronously in the process of the lifting frame 14 sliding downward, and the second sleeve 1204 pushes the second spline sleeve 1203 downward through the second return spring 1205, and when the key groove on the second spline sleeve 1203 is aligned with the spline on the fourth spline shaft 1206, the second spline sleeve 1203 is directly pushed onto the fourth spline shaft 1206, so that the transmission between the sleeve shaft 1201, the second spline sleeve 1203 and the torsion shaft 9 is connected; and when the key groove on the second spline sleeve 1203 is not aligned with the spline on the fourth spline shaft 1206, the second spline sleeve 1203 stops moving downward after the lower end of the second spline sleeve 1203 contacts the upper end of the fourth spline shaft 1206 in the process of the second spline sleeve 1203 moving downward, and the second return spring 1205 is compressed as the lifting frame 14 moves downward. Then the servo motor 709 is started again to rotate the two third transmission wheels 704, although the position of the first spline sleeve 803 has been moved downward, but since the first spline sleeve 803 and the fifth transmission wheel 1101 can slide relative to each other and are not separated, and the sixth transmission wheel 1102 and the sleeve shaft 1201 which has moved downward can also slide relative to each other and are not separated, therefore the third transmission wheel 704 can drive the fifth transmission wheel 1101 to rotate through the first spline shaft 801 and the first spline sleeve 803, and the fifth transmission wheel 1101 can drive the sixth transmission wheel 1102, the sleeve shaft 1201, the third spline shaft 1202 and the second spline sleeve 1203 to rotate synchronously through the third synchronous belt 1103, and as the second spline sleeve 1203 rotates, the key groove on the second spline sleeve 1203 will be aligned with the spline on the fourth spline shaft 1206, at this time the second spline sleeve 1203 can be pushed onto the fourth spline shaft 1206 under the rebound force of the second return spring 1205, and at this time the second spline sleeve 1203 can drive the torsion shaft 9 and the lower clamps 5 to rotate through the fourth spline shaft 1206, and thus the workpiece is subjected to the torsion test; and since the first clutch mechanisms 8 on both sides can drive the lower clamps 5 to rotate through the transmission mechanisms 11 on both sides, therefore a more powerful torque can be provided for the torsion test.

[0062] With the rotation of the servo motor 709, during the torsion test, for the lower clamp 5, since the lower connecting seat 15 will rotate clockwise with the torsion shaft 9, and since the workpiece has a reaction force on the clamping seat 501, the connecting seat 15 will first rotate a certain angle on the buffer rod 1701, and in this process, the connecting shaft 1804 and the connecting seat 15 will not only compress the spiral spring 1805, but the connecting seat 15 will also drive the transmission block 1802 to slide in the transmission groove 1803, until the transmission block 1802 slides from one end to the other end of the transmission groove 1803, and with the continuous rotation of the connecting seat 15, the transmission block 1802 and the transmission groove 1803 can be sequentially driven to rotate the transmission disc 1801, and the transmission disc 1801 can directly drive the clamping seat 501 to rotate and twist the workpiece through the buffer rod 1701. During the relative rotation of the connecting seat 15 on the buffer rod 1701, due to the restriction of the two pull rods 1606, the connecting seat 15 will also rotate relative to the connecting sleeve 1806, and in this process, the connecting seat 15 can drive the fixed pin 1808 to deflect to press the inclined groove 1807, and in this way, the connecting sleeve 1806 is driven to move downward by a certain gap, and in this way, the two pull rods 1606 are driven to slide up and down on the clamping seat 501, and the downward sliding pull rod 1606 can drive the second connecting pin 1605 to press the workpiece in the direction of the workpiece through the pressing groove 1607, and the second connecting pin 1605 can drive the pressure block 1601 to press the workpiece through the pressure rod 1602, the first connecting pin 1603 and the sliding groove 1604, so that the two pressure blocks 1601 on both sides can clamp the workpiece, thereby improving the clamping stability of the lower clamp 5.

[0063] For the upper clamp 5, referring to Figure 10 , with the torsion of the lower clamp 5, the workpiece will also generate a torque on the upper clamp 5, and drive the clamping seat 501 to deflect relative to the fixed connecting seat 15, and the clamping seat 501 will drive the connecting sleeve 1806 to deflect a certain angle clockwise on the connecting seat 15 through the two pull rods 1606 on both sides, and in the same way as above, under the guidance of the fixed pin 1808, the connecting sleeve 1806 can be driven to slide upward and pull the pull rod 1606 to slide upward by a certain distance through the inclined groove 1807, and the upward sliding pull rod 1606 can sequentially drive the pressure block 1601 to press the upper part of the workpiece through the pressing groove 1607, the second connecting pin 1605, the pressure rod 1602, the first connecting pin 1603 and the sliding groove 1604, so that the two pressure blocks 1601 inside can further clamp the upper part of the workpiece. After the torsion test is completed, the workpiece is removed, and under the rebound force of the spiral spring 1805, each part is reset for subsequent tests.

[0064] When it is needed to switch the device from the torsion test mode back to the tension test mode, the control cylinder 13 is used to push the lifting frame 14 to reset upward, in the process, if the key groove of the first spline sleeve 803 is aligned with the spline on the second spline shaft 802, the first spline sleeve 803 will be directly sleeved on the second spline shaft 802 to complete the transmission connection; when the key groove of the first spline sleeve 803 is not aligned with the spline on the second spline shaft 802, the upper end of the first spline sleeve 803 will stop moving upward after contacting the lower end of the second spline shaft 802, and with the continuous upward movement of the lifting frame 14 and the first sleeve 804, the first spline sleeve 803 and the first sleeve 804 can compress the first return spring 805, at the same time, the lifting frame 14 can pull the second spline sleeve 1203 off the fourth spline shaft 1206 through the second sleeve 1204 and the second limiting protrusion 12031, so that the second spline sleeve 1203 is separated from the fourth spline shaft 1206, at this time the transmission between the torsion shaft 9 and the transmission mechanism 11 is disconnected, then the driving mechanism 7 is started to drive the first spline shaft 801 to rotate, the first spline shaft 801 will also drive the first spline sleeve 803 to rotate synchronously, until the key groove on the first spline sleeve 803 is aligned with the spline on the second spline shaft 802, the first spline sleeve 803 can be pushed onto the lower part of the second spline shaft 802 under the rebound force of the first return spring 805, and the transmission between the driving mechanism 7 and the lead screw 301 is connected.

[0065] In the process of clamping the workpiece to be tested on the clamp 5, since the inclined direction of the sliding groove 1604 is the same as the sliding direction of the clamp block 503, by setting the first connecting pin 1603 and the sliding groove 1604, the clamp block 503 can make the pressing block 1601 not only slide synchronously, but also keep effective connection between the pressing block 1601 and the pressing rod 1602 during clamping the workpiece, ensuring the effectiveness of the pressing mechanism 16.

[0066] Moreover, by setting the self-adaptive spring 1608 and the sliding mechanism 19, in the process of clamping the workpiece, the pressing block 1601 will first contact the workpiece, and with the gradual contact and clamping of the clamp block 503 to the workpiece, the pressing block 1601 will also slide away from the workpiece, and push the pressing rod 1602 to slide on the clamping seat 501 through the sliding groove 1604 and the first connecting pin 1603, while compressing the self-adaptive spring 1608, and the pressing rod 1602 will also push the upper rod 16061 and the sliding block 1902 to slide on the guide rail 1901 synchronously through the second connecting pin 1605 and the extrusion groove 1607, until the clamp block 503 clamps the workpiece, the pressing block 1601 will still contact the workpiece, and in the subsequent test process, the tension buffer mechanism 17 and the torsion tensioning mechanism 18 can still directly drive the two pressing blocks 1601 to clamp the workpiece, so that the pressing mechanism 16 can clamp workpieces of different outer diameters, thereby improving its adaptability and practicality.

[0067] The above description is merely that of the preferred embodiments of the application, but the protection scope of the application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes to the technical solutions and the inventive concept of the application within the technical scope disclosed by the application, which should be covered by the protection scope of the application.

[0068] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

Claims

1. A testing device for automotive parts, comprising a base (1) and a support (2), wherein a lifting beam (4) is slidably connected to the support (2), and a lifting mechanism (3) connected to the lifting beam (4) is provided on the support (2), and clamps (5) are provided on both the base (1) and the lifting beam (4), characterized in that: The base (1) is provided with a drive mechanism (7) inside. The output of the drive mechanism (7) is connected to the lifting mechanism (3) with a first clutch mechanism (8) for controlling the transmission clutch between the drive mechanism (7) and the lifting mechanism (3). The clamp (5) located on the base (1) is provided with a torsion shaft (9) at the lower part. A transmission mechanism (11) is provided between the torsion shaft (9) and the first clutch mechanism (8) for driving the torsion shaft (9) to rotate. A second clutch mechanism (12) is provided between the transmission mechanism (11) and the torsion shaft (9) for controlling the transmission clutch between the transmission mechanism (11) and the torsion shaft (9). The base (1) is provided with a lifting frame (14) inside. The first clutch mechanism (8) and the second clutch mechanism (12) are both provided on the lifting frame (14), and a cylinder (13) is provided between the lifting frame (14) and the base (1) for switching the clutch state of the first clutch mechanism (8) and the second clutch mechanism (12). The first clutch mechanism (8) includes two first spline shafts (801) and two second spline shafts (802). The two first spline shafts (801) are respectively connected to the drive mechanism (7) for transmission. The two second spline shafts (802) are respectively fixedly connected to the lower end of the lead screw (301). The two first spline shafts (801) and the two second spline shafts (802) are coaxially corresponding one by one. The upper part of the first spline shaft (801) is sleeved with a first spline sleeve (803). The outside of the first spline sleeve (803) is sleeved with a first sleeve (804) fixed on the lifting frame (14). A first return spring (805) is connected between the first spline sleeve (803) and the first sleeve (804). The second clutch mechanism (12) includes a sleeve shaft (1201) sleeved on the outside of the torsion shaft (9), a third spline shaft (1202), and a fourth spline shaft (1206) fixed to the lower part of the torsion shaft (9). The lower part of the third spline shaft (1202) is sleeved with a second spline sleeve (1203). The outside of the second spline sleeve (1203) is sleeved with a second sleeve (1204) fixedly connected to the lifting frame (14). A second return spring (1205) is connected between the second spline sleeve (1203) and the second sleeve (1204). The transmission mechanism (11) includes a sixth transmission wheel (1102) and two fifth transmission wheels (1101). A third synchronous belt (1103) is connected between the two fifth transmission wheels (1101) and the sixth transmission wheel (1102). The first spline sleeve (803) and the sleeve shaft (1201) are both regular hexagonal prisms. The two fifth transmission wheels (1101) are respectively connected to the outside of the two first spline sleeves (803). The sixth transmission wheel (1102) is connected to the outside of the sleeve shaft (1201). A support frame (10) is fixedly connected inside the base (1). The two fifth transmission wheels (1101) and the sixth transmission wheel (1102) are rotatably connected to the support frame (10). The fixture (5) includes a clamping base (501), and the upper part of the clamping base (501) is provided with an isosceles trapezoidal clamping groove (502). Two symmetrically distributed clamping blocks (503) are slidably connected to the two sides inside the clamping groove (502) for clamping and fixing the workpiece to be tested. The clamping base (501) is provided with a pressing mechanism (16) for further clamping and fixing the workpiece to be tested during the test. The lower part of the clamping base (501) is provided with a T-shaped connecting base (15). The connecting base (15) is provided with a tensioning buffer mechanism (17) and a torsion tensioning mechanism (18). The tensioning buffer mechanism (17) is used to drive the clamping mechanism (16) during the tensile test, and the torsion tensioning mechanism (18) is used to drive the clamping mechanism (16) during the torsion test.

2. The automotive parts testing device according to claim 1, characterized in that: The lifting mechanism (3) includes two lead screws (301), which are rotatably connected to both sides of the bracket (2), and each lead screw (301) is connected to a lead screw nut (302). The lifting beam (4) is fixedly connected between the two lead screw nuts (302).

3. The automotive parts testing device according to claim 1, characterized in that: The drive mechanism (7) includes a first drive wheel (701), a second drive wheel (702), a servo motor (709), and two third drive wheels (704). The output end of the servo motor (709) is connected to the first drive wheel (701). A first synchronous belt (703) is connected between the first drive wheel (701) and the second drive wheel (702). A fourth drive wheel (705) is connected to the lower part of the second drive wheel (702). A second synchronous belt (706) is connected between the fourth drive wheel (705) and the two third drive wheels (704).

4. The automotive parts testing device according to claim 1, characterized in that: The clamping mechanism (16) includes two pressure blocks (1601), two pressure rods (1602), and two pull rods (1606). The two pressure blocks (1601) are symmetrically distributed and are slidably connected to the two clamping blocks (503) in the lateral direction. The two pressure rods (1602) are symmetrically distributed and are slidably connected to the inside of the clamping seat (501) in the lateral direction. The pressure rods (1602) are respectively provided with a first connecting pin (1603) and a second connecting pin (1605). An inclined groove (1604) is opened on the outer side of the pressure block (1601). The first connecting pin (1603) is inserted into the groove (1604). The two pull rods (1606) are symmetrically distributed and are slidably connected to the clamping seat (501) in the vertical direction. An inclined extrusion groove (1607) is opened at the upper end of the pull rod (1606). The second connecting pin (1605) is inserted into the extrusion groove (1607).

5. The automotive parts testing device according to claim 4, characterized in that: The tensioning buffer mechanism (17) includes a buffer rod (1701) fixedly connected to the lower part of the clamping seat (501). The upper part of the connecting seat (15) has a cavity (1501). The lower part of the buffer rod (1701) is slidably inserted into the cavity (1501). The lower part of the buffer rod (1701) is fixedly connected to a limit sleeve (1702), and a connecting spring (1703) is connected between the buffer rod (1701) and the connecting seat (15).

6. The automotive parts testing device according to claim 5, characterized in that: The torsion tensioning mechanism (18) includes a transmission disc (1801) and a connecting sleeve (1806). The transmission disc (1801) is fixedly connected to the lower end of the buffer rod (1701), and a transmission groove (1803) is provided on the outer surface of the transmission disc (1801). A transmission block (1802) is fixedly connected to the inner surface of the cavity (1501). The transmission block (1802) is slidably connected in the transmission groove (1803). The transmission disc (1801) and the connecting seat (15) are connected to each other. A helical spring (1805) is connected between the two sides of the connecting sleeve (1806) and the connecting sleeve (1806) is sleeved on the outside of the connecting seat (15). The two sides of the connecting sleeve (1806) are fixedly connected to two pull rods (1606) respectively. The outer surface of the connecting sleeve (1806) is provided with a slanted groove (1807). The connecting seat (15) is fixedly connected to a fixing pin (1808) inserted into the slanted groove (1807). The slanted grooves (1807) on the upper and lower connecting sleeves (1806) are parallel.

7. The automotive parts testing device according to claim 4, characterized in that: Both of the pull rods (1606) are provided with a sliding mechanism (19). The sliding mechanism (19) divides the pull rod (1606) into an upper rod (16061) and a lower rod (16062). The sliding mechanism (19) includes a guide rail (1901) and a slider (1902). The guide rail (1901) is fixedly connected to the lower rod (16062), and the slider (1902) is fixedly connected to the lower rod (16062). The slider (1902) is slidably connected to the guide rail (1901). An adaptive spring (1608) is provided between the pressure rod (1602) and the clamping seat (501).

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