A performance testing device for container double-trailer vehicle components

Abstract

The present invention discloses a device for testing the performance of a container double-trailer vehicle assembly, and the present invention relates to the technical field of trailer traction pin performance testing. The device for testing the performance of a container double-trailer vehicle assembly comprises a testing platform, the upper end face of which is rotatably connected to a ring-shaped bearing plate, a saddle is provided on the upper portion of a movable bearing frame, and a combined detection drive mechanism drives the saddle to move longitudinally, which can be used to simulate the axial friction between the saddle and the traction pin when the bump drives the saddle to move longitudinally. The combined detection drive mechanism, the adjustable traction mechanism and the driving mechanism are combined with each other to simultaneously perform different aspects of the traction pin. The present invention combines the combined detection drive mechanism with the adjustable traction mechanism to simultaneously perform multiple tests on the traction pin, thereby realizing integrated testing. At the same time, it can simulate the complex working conditions of the traction pin in actual work, making the testing process closer to actual use, accurately reflecting the comprehensive performance of the traction pin, and improving the accuracy of the test results.

Description

Technical Field

[0001] The invention relates to the technical field of trailer drawbar performance detection, in particular to a container double-trailer vehicle component performance detection device. Background Art

[0002] The container double-hook vehicle assembly is a heavy-duty traction system designed specifically for transporting containers. It is usually used for trailer transport vehicles that need to transport large, heavy goods or containers. The container double-hook system usually consists of a tractor (the tractor part) and a trailer (the part that carries the goods), which are tightly connected by various connecting devices. Among them, the tow pin is one of the key components connecting the tractor and the trailer. It is usually located at the bottom front of the trailer. Its main function is to provide a solid connection point so that the saddle on the tractor can be connected to it, thereby reliably towing the trailer. The tow pin is under tremendous stress when carrying traction and braking forces, especially in high loads, frequent braking, starting and turning. In the container double-hook system, the tow pin not only bears tension, but also resists lateral shear force. Therefore, the strength, wear resistance and durability of the tow pin are crucial.

[0003] The performance testing of the traction pin usually covers multiple aspects, such as wear resistance, tension and shear, etc. The existing testing equipment can only test a certain performance of the traction pin. This means that in order to fully understand all the performance of the traction pin, multiple tests must be carried out. Each different test requires the traction pin to be transferred to different testing equipment, resulting in a longer time for the traction pin to complete the entire testing process and a longer entire testing cycle.

[0004] In addition, the wear of the towing pin mainly comes from multiple aspects, such as: 1) changes in pulling force caused by the trailer carrying heavy cargo; 2) frequent starting, braking and sudden acceleration; 3) relative movement between the towing pin and the saddle due to factors such as uneven road surface and vehicle turning when the tractor and trailer are driving, which causes the contact angle between the towing pin and the saddle to change, and this change will cause the friction point to change continuously; however, the existing wear resistance and tension shear tests are usually in a single direction, and often cannot simulate these multiple working conditions at the same time. The wear of the towing pin is mainly caused by the combined effect of the above-mentioned multiple factors, which makes it impossible to fully evaluate the actual performance of the towing pin, resulting in the test results not being able to truly reflect the performance of the towing pin in actual work. Summary of the Invention

[0005] The present invention provides a performance testing device for container double-hook vehicle components, which solves the technical problems that existing tow pin testing equipment can usually only test a single performance, such as wear resistance or tensile shear force, but cannot simultaneously evaluate the comprehensive performance of the tow pin under multiple working conditions, resulting in the need for multiple tests and the transfer of the tow pin to different equipment, which prolongs the testing cycle, and cannot simulate complex working conditions and fully reflect the performance of the tow pin in actual use.

[0006] The present invention provides a container double-trailer automobile component performance testing device, including a testing platform, the upper end surface of the testing platform is rotatably connected to an annular load-bearing plate, the upper end surface of the annular load-bearing plate is circumferentially equidistantly provided with a plurality of movable load-bearing frames, the upper part of the movable load-bearing frame is provided with a saddle, and a combined detection driving mechanism for driving the saddle to perform longitudinal and lateral movements is commonly provided between the upper part of the annular load-bearing plate and the movable load-bearing frame. When the combined detection driving mechanism drives the saddle to move longitudinally, it can be used to simulate the axial friction between the saddle and the traction pin when the bump drives the longitudinal movement. When the combined detection driving mechanism drives the saddle to move laterally, it can also intermittently pull the saddle to simulate starting or emergency. When the saddle stops, it causes an impact on the traction pin due to inertia. Several adjustable pulling mechanisms corresponding to the movable carrier are equidistantly arranged on the end surface of the testing platform. The adjustable pulling mechanism is provided with a clamping mechanism for quickly installing and limiting the testing traction pin. A driving mechanism for driving reciprocating rotation is commonly provided between the testing platform and the annular carrier plate. The driving mechanism is used to indirectly drive the movable carrier, the clamping mechanism and the adjustable pulling mechanism to cooperate with each other so as to simulate the lateral pressure and circumferential friction of the traction pin at different positions when the tractor turns. The combined detection driving mechanism, the adjustable pulling mechanism and the driving mechanism can be combined with each other to perform different aspects of the traction pin at the same time.

[0007] In one possible implementation, the movable supporting frame includes two sliding grooves symmetrically opened on the upper end surface of the annular supporting plate, and supports are slidably connected in the sliding grooves. Two vertical grooves are symmetrically opened on the supports, and an L-shaped support plate is slidably connected between the two vertical grooves on the same side. A top spring is fixedly connected between the horizontal section of the L-shaped support plate and the bottom of the vertical groove, and the saddle is fixedly connected to the upper end surfaces of the vertical sections of the two L-shaped support plates.

[0008] In one possible implementation, the combined detection drive mechanism includes a reciprocating electric telescopic rod fixedly connected to the inner cavity of the annular carrier plate through a horizontal plate and located at the center of the circle, a pillar fixedly connected to the upper end of the reciprocating electric telescopic rod, a longitudinal push assembly jointly arranged between the L-shaped support plate and the pillar, and a transverse pull assembly jointly arranged between the support and the pillar. The longitudinal push assembly includes a strip box fixedly connected to one side of the corresponding two L-shaped support plates close to the center of the annular carrier plate through a connecting rod, and a plurality of push plates fixedly connected to the outer wall of the pillar at equal distances in the circumference and corresponding to the strip box, and the push plates are slidably arranged in the strip box, and the two vertical wall panels opposite to the strip box are symmetrically provided with a socket group, and the socket group consists of a plurality of through holes opened on the vertical wall panels of the strip box, and a pin is commonly threaded between the two horizontally opposite through holes.

[0009] In one possible implementation, the transverse pulling assembly includes a cable, a cable is fixedly connected to the side of the support close to the pillar, and a plurality of L-shaped rods corresponding to the cables are fixedly connected circumferentially on the inner circumferential wall of the annular supporting plate. The side end surface of the vertical section of the L-shaped rod is symmetrically connected to two guide wheels for limiting the cable, and the cable passes between the two guide wheels.

[0010] In one possible implementation, the adjustable pulling mechanism can flexibly adjust the pulling force applied to the traction pins at different workstations so that the traction pins at different positions can be synchronously compared when performing side pressure testing under different variables. The adjustable pulling mechanism includes a column seat rotatably connected to the end face of the testing platform and a plate table hinged to the column seat through a lug. The upper end face of the plate table is slidably connected to a slide plate through a slider group. The upper end face of the plate table and the side of the slide plate away from the annular supporting plate are respectively fixedly connected with a strip-type seat with an upper opening. The wall panels on one side of the two strip-type seats close to each other are provided with a number of slots at equal distances, and a tensile member is commonly clamped between the two opposite slots.

[0011] In one possible implementation, the stretching member includes two clamping columns for being clamped in the clamping slots, and two limiting rings distributed along their own axial direction are symmetrically fixedly connected to the outside of the clamping columns. The opposite ends of the two clamping columns are fixedly connected to connecting blocks, and a tension spring is fixedly connected between the two connecting blocks.

[0012] In a possible implementation, a transverse groove communicating with the card slot is formed on the vertical wall plate of the strip-shaped seat, and a pin plate is slidably connected in the transverse groove.

[0013] In one possible implementation, the clamping mechanism includes a placement plate fixedly connected to the side of the slide close to the axis of the annular carrier plate, the placement plate is provided with a mounting through hole, and the upper end surface of the placement plate is provided with a mounting groove connected to the mounting through hole, and the bottom of the mounting groove is fixedly connected with a plurality of limit columns equidistantly along the circumferential direction of the mounting through hole, a cover plate is slidably connected in the mounting groove, and a reset spring is fixedly connected between the cover plate and the wall of the mounting groove.

[0014] In a possible implementation, a limiting strip affixed to the upper surface of the cover plate is fixedly connected to a side groove wall of the mounting groove extending radially along the annular carrier plate.

[0015] In one possible implementation, the driving mechanism includes two shifting posts symmetrically fixedly connected to the lower end surface of the annular carrier plate and two hydraulic telescopic rods symmetrically distributed and hinged to the upper end surface of the detection platform, and one end of the hydraulic telescopic rod close to the axis of the annular carrier plate is hinged to the shifting post.

[0016] It can be seen from the above technical solution that the present invention has the following advantages: In the present invention, the combined detection drive mechanism and the adjustable pulling mechanism are combined with each other, which can simultaneously perform multiple detections on the traction pin, including friction during turning, axial friction and contact angle changes during bumps, and impact resistance under inertial motion, to achieve integrated detection that combines multiple detection items into one detection process, which not only improves efficiency, but also reduces the time cost required for manual operation and transfer, and the overall detection cycle is significantly shortened. At the same time, it can simulate the complex working conditions of the traction pin in actual work, so that the detection process is closer to the performance of the traction pin in actual use, and thus more accurately reflects the comprehensive performance of the traction pin in actual use, thereby improving the accuracy of the detection results.

[0017] In the present invention, by adjusting the pulling force of the adjustable pulling mechanism on the traction pin at different workstations, the circumferential friction caused by the pulling force of different weights on the traction pin during steering is simulated, thereby accurately measuring and comparing the specific effects of traction loads of different weights on the traction pin. The synchronous comparison of multiple workstations allows real-time comparison under different working conditions, so as to more clearly understand the performance of the traction pin under each load condition, and then reveal the performance differences of the traction pin under different variable conditions, thereby enhancing the reliability of detection.

[0018] In the present invention, the longitudinal pushing component and the transverse pulling component in the combined detection driving mechanism cooperate with each other to respectively simulate the misalignment movement between the traction pin and the saddle caused by road bumps, which can dynamically reproduce the changes in the friction points between the traction pin and the saddle, so that the friction points outside the traction pin simulate the dynamic changes in actual working conditions, and simulate the impact of inertia on the traction pin during frequent starting, rapid acceleration and sudden stopping, covering the simulation of multiple working conditions at one time, more accurately reflecting the actual use of the traction pin under various dynamic working conditions, and further improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the container double-trailer vehicle component performance testing device provided by the present invention.

[0021] Figure 2 This is a partial structural diagram of the container double-trailer vehicle component performance testing device provided by the present invention.

[0022] Figure 3 This is a schematic diagram of the installation structure of the combined detection and driving mechanism provided by the present invention.

[0023] Figure 4 The present invention provides Figure 3 Schematic diagram of the enlarged structure of part A in .

[0024] Figure 5 This is a schematic structural diagram of the adjustable pulling mechanism provided by the present invention.

[0025] Figure 6 The present invention provides Figure 5 Schematic diagram of the enlarged structure of part B.

[0026] Figure 7 This is a schematic diagram of the upward viewing angle structure of the adjustable pulling mechanism provided by the present invention.

[0027] Figure 8 This is a schematic diagram of the structure of the tensile member provided by the present invention.

[0028] Figure 9 This is a partial structural diagram of the clamping mechanism provided by the present invention.

[0029] Figure 10 This is a schematic diagram of the state after the traction pin and saddle provided by the present invention are matched.

[0030] The above drawings include the following reference numerals: 1. test platform; 2. annular carrier plate; 3. movable carrier frame; 31. slideway; 32. support; 33. L-shaped support plate; 4. saddle; 5. combined test drive mechanism; 51. reciprocating electric telescopic rod; 52. support; 53. longitudinal push assembly; 531. bar box; 532. push plate; 533. through hole; 534. latch; 54. horizontal pull assembly; 541. cable; 542. Guide wheel; 6. Adjustable pulling mechanism; 61. Column base; 62. Plate; 63. Slide plate; 64. Strip seat; 65. Slot; 66. Tensile member; 661. Clamping column; 662. Limiting ring; 663. Tension spring; 7. Clamping mechanism; 71. Placement plate; 72. Mounting through hole; 73. Mounting slot; 74. Limiting column; 75. Cover plate; 8. Driving mechanism; 81. Shifting column; 82. Hydraulic telescopic rod; 9. Horizontal slot; 10. Pin plate. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] See also Figure 1 、 Figure 2 and Figure 3The present invention provides a technical solution: a container double-trailer vehicle component performance testing device, comprising a testing platform 1, an annular carrier plate 2 is rotatably connected to the upper end surface of the testing platform 1, a plurality of movable carrier frames 3 are equidistantly arranged on the upper end surface of the annular carrier plate 2 in the circumferential direction, a saddle 4 is arranged on the upper part of the movable carrier frame 3 (the saddle 4 is a device on an existing tractor), and a combined testing driving mechanism 5 for driving the saddle 4 to perform longitudinal and transverse movements is commonly provided between the upper part of the annular carrier plate 2 and the movable carrier frame 3. When the combined testing driving mechanism 5 drives the saddle 4 to move longitudinally, it can be used to simulate the axial friction between the saddle 4 and the traction pin when the bump drives the saddle 4 to move longitudinally. When the combined testing driving mechanism 5 drives the saddle 4 to move transversely, it can intermittently pull the saddle 4 to simulate the impact of the saddle 4 on the traction pin under inertia during starting or emergency stopping. Several adjustable pulling mechanisms 6 corresponding to the movable carrier frame 3 are equidistantly arranged on the upper end surface of the test platform 1 in the circumferential direction. The adjustable pulling mechanism 6 is provided with a clamping mechanism 7 for quickly installing and limiting the traction pin for detection. A driving mechanism 8 for driving reciprocating rotation is commonly provided between the test platform 1 and the annular carrier plate 2. The driving mechanism 8 is used to indirectly drive the movable carrier frame 3, the clamping mechanism 7 and the adjustable pulling mechanism 6 to cooperate with each other so as to simulate the lateral pressure and circumferential friction of the traction pin at different positions when the tractor turns. The adjustable pulling mechanism 6 can flexibly adjust the tension exerted on the traction pins at different workstations so that the traction pins at different positions can be synchronously compared when the lateral pressure is detected under different variables. The combined detection driving mechanism 5, the adjustable pulling mechanism 6 and the driving mechanism 8 are combined with each other to simultaneously perform different aspects of detection on the traction pins.

[0033] See also Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 In this embodiment, the adjustable pulling mechanism 6 includes a column base 61 rotatably connected to the upper end surface of the detection platform 1 and a plate 62 hinged to the column base 61 through a lug. The upper end surface of the plate 62 is slidably connected to a slide plate 63 through a slider group. The upper end surface of the plate 62 and the side of the slide plate 63 away from the annular carrier plate 2 are respectively fixedly connected with a strip seat 64 with an upper opening. The wall panels on the side where the two strip seats 64 are close to each other are equidistantly provided with a number of card slots 65, and a tensile member 66 is commonly clamped between the two opposite card slots 65. A horizontal groove 9 connected to the card slot 65 is provided on the vertical wall panel of the strip seat 64, and a pin plate 10 is slidably connected in the horizontal groove 9.

[0034] See also Figure 6 and Figure 8The stretching member 66 includes two clamping columns 661 for clamping in the clamping slot 65. The outside of the clamping column 661 is symmetrically fixedly connected to two limit rings 662 distributed along its own axial direction. The opposite ends of the two clamping columns 661 are fixedly connected to connecting blocks, and a tension spring 663 is fixedly connected between the two connecting blocks.

[0035] See also Figure 2 、 Figure 5 、 Figure 7 and Figure 9 The clamping mechanism 7 includes a placement plate 71 fixedly connected to the slide plate 63 on the side close to the axis of the annular carrier disk 2. A mounting through hole 72 is provided on the placement plate 71. A mounting groove 73 communicating with the mounting through hole 72 is provided on the upper end surface of the placement plate 71. A plurality of limit columns 74 are fixedly connected to the bottom of the mounting groove 73 at equal distances along the circumferential direction of the mounting through hole 72. A cover plate 75 is slidably connected to the mounting groove 73. A reset spring is fixedly connected between the cover plate 75 and the groove wall of the mounting groove 73. A limit strip fitted to the upper surface of the cover plate 75 is fixedly connected to the side groove wall of the mounting groove 73 extending radially along the annular carrier disk 2.

[0036] See also Figure 1 and Figure 2 The driving mechanism 8 includes two shifting posts 81 symmetrically fixedly connected to the lower end surface of the annular carrier plate 2 and two hydraulic telescopic rods 82 symmetrically distributed and hinged to the upper end surface of the detection platform 1. The end of the hydraulic telescopic rod 82 close to the axis of the annular carrier plate 2 is hinged to the shifting post 81.

[0037] If locking sill 752 snap on the positioning plate 74 away from that locking sill 74, then lock core 71 will be locked in the locking sill 74, and locking sill 74 from the hinge parts of each end face 72 is fixed with the hinge parts in the center position, and lock core 71 is in the center position, and locking sill 77 is in the center position, and locking sill 77 is in the center position.

[0038] Then, according to the tension requirement, select an appropriate number of tensile members 66, and then embed the two clamping columns 661 of the tensile member 66 into the clamping slot 65 respectively, so that the limiting ring 662 is located on both sides of the clamping slot 65 (when it is necessary to perform synchronous comparative tests on the traction pins on different workstations under different tension variables, the tensile members 66 in each adjustable pulling mechanism 6 can be set to different numbers). After all the selected tensile members 66 are placed in the clamping slot 65, manually insert the pin plate 10 into the transverse groove 9. The pin plate 10 is located on the upper side of the clamping column 661 to limit the tensile member 66.

[0039] Then the hydraulic telescopic rod 82 is controlled to repeatedly extend and shorten. When the hydraulic telescopic rod 82 is extended, the push rod 81 is pushed to perform circumferential motion with the axis of the annular carrier plate 2 as the center. The push rod 81 then drives the annular carrier plate 2 to rotate. The annular carrier plate 2 then drives the saddle 4 to rotate through the movable carrier frame 3. The saddle 4 then pulls the placement plate 71 to move through the traction pin, and the placement plate 71 is moved through the slide 63. The movement of the slide 63 causes the tensile member 66 to be gradually stretched. The pulling of the traction pin by the tensile member 66 simulates the tension exerted on the traction pin when pulling goods. The traction pin indirectly pulls the slide 63 to slide on the platform 62. At the same time, the platform 62 will drive the column seat 61 to rotate, and then indirectly rotate the traction pin. The traction pin and the saddle 4 rotate in an offset manner, which can simulate the friction exerted on the traction pin when turning.

[0040] After the hydraulic telescopic rod 82 is extended to the maximum stroke, it will gradually contract, and then the annular carrier plate 2 will be pulled in the opposite direction by the shift column 81. The annular carrier plate 2 will then perform the above steps in the reverse direction, so that the traction pin and the saddle 4 will be misaligned and rotated again, so that the wear of the traction pin can be detected when it is subjected to tension and turns.

[0041] When the annular carrier plate 2 reciprocates for a specified period of time, the hydraulic telescopic rod 82 is controlled to stop running, and then the cover plate 75 is pulled away, the traction pin is removed and its diameter is measured using a measuring device, and compared with the diameter size of the traction pin before the test to check its degree of wear.

[0042] See also Figure 3 and Figure 4 In this embodiment, the movable carrier frame 3 includes two sliding grooves 31 symmetrically opened on the upper end surface of the annular carrier plate 2, and the sliding grooves 31 are slidably connected with supports 32. Two vertical grooves are symmetrically opened on the supports 32, and an L-shaped support plate 33 is slidably connected between the two vertical grooves on the same side. A top spring is fixedly connected between the horizontal section of the L-shaped support plate 33 and the bottom of the vertical groove, and the saddle 4 is fixedly connected to the upper end surfaces of the vertical sections of the two L-shaped support plates 33.

[0043] See also Figure 3 、 Figure 4 and Figure 10The combined detection drive mechanism 5 includes a reciprocating electric telescopic rod 51 fixedly connected to the inner cavity of the annular carrier disk 2 and located at the center of the circle by a horizontal plate, a pillar 52 fixedly connected to the upper end of the reciprocating electric telescopic rod 51, a longitudinal pushing component 53 jointly arranged between the L-shaped support plate 33 and the pillar 52, and a transverse pulling component 54 jointly arranged between the support 32 and the pillar 52. The longitudinal pushing component 53 includes two corresponding L-shaped support plates 33, which are jointly fixedly connected by a connecting rod on one side near the center of the annular carrier disk 2, and a plurality of push plates 532 fixedly connected to the outer wall of the pillar 52 at equal intervals in the circumference and corresponding to the strip box 531, and the push plate 532 is slidably arranged in the strip box 531, and the two opposite vertical wall plates of the strip box 531 are symmetrically provided with a socket group, and the socket group consists of a plurality of through holes 533 opened on the vertical wall plates of the strip box 531, and a pin 534 is threadedly connected between the two horizontally opposite through holes 533.

[0044] See also Figure 4 The horizontal pulling assembly 54 includes a cable 541. The cable 541 is fixedly connected to the side of the support 32 close to the pillar 52. Several L-shaped rods corresponding to the cables 541 are fixedly connected circumferentially on the inner wall of the annular carrier plate 2. Two guide wheels 542 for limiting the position of the cables 541 are connected to the side end surface of the vertical section of the L-shaped rod so as to rotate symmetrically up and down, and the cables 541 pass between the two guide wheels 542.

[0045] Before carrying out the inspection work, the pin 534 is moved to the through hole 533 at different height positions and then screwed in, so that the longitudinal misalignment movement stroke between the saddle 4 and the traction pin, as well as the contact angle between the two, can be adjusted when the saddle 4 and the traction pin encounter different degrees of bumpy movement in the subsequent simulation. The hydraulic telescopic rod 82 drives the annular carrier plate 2 to rotate reciprocatingly while controlling the reciprocating electric telescopic rod 51 to repeatedly extend and shorten. When the reciprocating electric telescopic rod 51 extends, it first drives the pillar 52 to move up, and the pillar 52 then drives the push plate 532 to move up. The push plate 532 slides upward in the bar box 531. When the push plate 532 moves up to contact the pin 534, it will drive the bar box 531 to move up synchronously through the pin 534. The bar box 531 then drives the L-shaped support plate 33 to move up synchronously through the connecting rod. The L-shaped support plate 33 then drives the saddle 4 to move up. When the saddle 4 moves up, a vertical misalignment movement occurs between it and the traction pin.

[0046] When the reciprocating electric telescopic rod 51 contracts, the pillar 52 is driven to move downward, and the pillar 52 then drives the push plate 532 to move downward. When the push plate 532 moves downward and hits the pin 534 at the bottom, it presses the strip box 531 to move downward. The strip box 531 then indirectly drives the L-shaped support plate 33 to move downward, and the L-shaped support plate 33 then drives the saddle 4 to move downward, causing the saddle 4 and the traction pin to be vertically dislocated again, thereby simulating the dislocation movement between the traction pin and the saddle 4 when encountering a bumpy road section and the change in the contact angle between the two, so that the friction point outside the traction pin simulates the dynamic changes in actual working conditions.

[0047] The reciprocating electric telescopic rod 51 drives the pillar 52 to move up and down, and at the same time triggers the horizontal pulling component 54 to operate. When the pillar 52 is pushed up and starts to rise from the initial state, the cable 541 is in a relaxed state. When the pillar 52 rises to a certain height, the cable 541 will be quickly pulled to become taut. The cable 541 will then quickly pull the support 32 toward the reciprocating electric telescopic rod 51, and the support 32 will drive the saddle 4 to move quickly through the L-shaped support plate 33, simulating the impact of inertia on the traction pin during frequent starting, sudden acceleration and sudden stopping. When the pillar 52 moves down, the above steps can be repeated in reverse. The cable 541 will first experience a relaxed state, and then after the pillar 52 moves down to a certain distance, the cable 541 will be pulled quickly to tighten, and then the support 32 will be pulled toward the reciprocating electric telescopic rod 51 again, simulating the impact of inertia on the traction pin again.

[0048] By cooperating with the longitudinal push assembly 53 and the transverse pull assembly 54, the traction pin can be subjected to simultaneous dislocation motion friction, dynamic changes in the friction point caused by changes in the contact angle between the traction pin and the saddle 4, and impact of the traction pin by inertial motion.

[0049] See also Figures 1-10 During operation, the traction pin is first placed into the clamping mechanism 7 for installation and limiting, and then the position of the clamping mechanism 7 is moved so that the traction pin and the saddle 4 are clamped together. Then, the driving mechanism 8 and the combined detection driving mechanism 5 are controlled to operate synchronously. The driving mechanism 8 drives the annular carrier plate 2 to rotate back and forth, and the annular carrier plate 2 then triggers the adjustable pulling mechanism 6 to operate, simulating the tension on the traction pin during transportation and the misalignment between the traction pin and the saddle 4 during steering, thereby realizing the friction test of the traction pin. When the combined detection driving mechanism 5 is in operation, it drives the saddle 4 to move longitudinally, causing the saddle 4 to move vertically misaligned with the traction pin. At the same time, it drives the saddle 4 to move horizontally rapidly, causing the saddle 4 to collide with the traction pin. It can also simulate the misalignment movement between the traction pin and the saddle 4 when encountering bumpy roads and the change in the contact angle between the two, so that the friction point outside the traction pin simulates the dynamic changes in actual working conditions, as well as the impact of inertia on the traction pin during frequent starting, sudden acceleration and sudden stopping. At the same time, multiple different working conditions are simulated to perform different aspects of the traction pin testing.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature designated as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0052] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A performance testing device for a container double trailer vehicle assembly, comprising a testing platform, characterized in that: The upper end surface of the detection platform is rotatably connected to an annular carrier plate, and a plurality of movable carrier frames are equidistantly arranged on the upper end surface of the annular carrier plate. A saddle is arranged on the upper part of the movable carrier frame. A combined detection driving mechanism for driving the saddle to perform longitudinal and transverse movement is commonly provided between the upper part of the annular carrier plate and the movable carrier frame; When the combined detection drive mechanism drives the saddle to move longitudinally, it is used to simulate the axial friction between the saddle and the traction pin when the bump drives the saddle to move longitudinally. When the combined detection drive mechanism drives the saddle to move laterally, it intermittently pulls the saddle to simulate the impact of the saddle on the traction pin caused by inertia during starting or emergency stopping. Several adjustable pulling mechanisms corresponding to the movable carrier are equidistantly arranged on the end surface of the testing platform. The adjustable pulling mechanisms are provided with a clamping mechanism for quickly installing and limiting the detection traction pin. A driving mechanism for driving reciprocating rotation is provided between the testing platform and the annular carrier plate. The driving mechanism is used to indirectly drive the movable carrier, the clamping mechanism and the adjustable pulling mechanism to cooperate with each other, so as to simulate the lateral pressure and circumferential friction on the traction pin caused by traction at different positions of the tractor when turning. The combined detection drive mechanism, the adjustable pulling mechanism and the driving mechanism are combined to simultaneously perform different aspects of the traction pin detection; First, the traction pin is placed into the clamping mechanism for installation and limiting, and then the position of the clamping mechanism is moved so that the traction pin and the saddle are clamped together. Then, the driving mechanism and the combined detection driving mechanism are controlled to operate synchronously. The driving mechanism drives the annular carrier plate to rotate back and forth, and the annular carrier plate then triggers the adjustable pulling mechanism to operate, simulating the tension on the traction pin during transportation and simulating the misalignment state between the traction pin and the saddle during turning, thereby realizing the friction test of the traction pin. When the combined detection driving mechanism is running, it drives the saddle to move longitudinally, causing the vertical misalignment movement between the saddle and the traction pin, and at the same time drives the saddle to move rapidly laterally, causing the saddle to collide with the traction pin. It can also simulate the misalignment movement between the traction pin and the saddle when encountering bumpy roads and the change in the contact angle between the two, so that the friction points outside the traction pin simulate the dynamic changes in actual working conditions, and simulate the impact of inertia motion on the traction pin during frequent starting, sudden acceleration and sudden stopping. At the same time, multiple different working conditions are simulated to perform different aspects of the traction pin detection.

2. The performance testing device for a container-trailer vehicle assembly according to claim 1, characterized in that: The movable supporting frame includes two sliding grooves symmetrically opened on the upper end surface of the annular supporting plate, and supports are slidably connected in the sliding grooves. Two vertical grooves are symmetrically opened on the supports, and an L-shaped support plate is slidably connected between the two vertical grooves on the same side. A top spring is fixedly connected between the horizontal section of the L-shaped support plate and the bottom of the vertical groove, and the saddle is fixedly connected to the upper end surfaces of the vertical sections of the two L-shaped support plates.

3. The performance testing device for a container-trailer vehicle assembly according to claim 2, characterized in that: The combined detection drive mechanism includes a reciprocating electric telescopic rod fixedly connected to the inner cavity of the annular carrier plate through a horizontal plate and located at the center of the circle, a pillar fixedly connected to the upper end of the reciprocating electric telescopic rod, a longitudinal push assembly jointly arranged between the L-shaped support plate and the pillar, and a transverse pull assembly jointly arranged between the support and the pillar. The longitudinal push assembly includes a strip box fixedly connected to one side of the corresponding two L-shaped support plates close to the center of the annular carrier plate through a connecting rod, and a plurality of push plates fixedly connected to the outer wall of the pillar at equal distances in the circumference and corresponding to the strip box, and the push plates are slidably arranged in the strip box, and the two vertical wall panels opposite to the strip box are symmetrically provided with a socket group, and the socket group consists of a plurality of through holes opened on the vertical wall panels of the strip box, and a pin is commonly threaded between the two horizontally opposite through holes.

4. The performance testing device for a container-trailer vehicle assembly according to claim 3, characterized in that: The horizontal pulling assembly includes a cable, and the cable is fixedly connected to the side of the support close to the pillar. Several L-shaped rods corresponding to the cables are fixedly connected circumferentially on the inner circumferential wall of the annular bearing plate. The side end surface of the vertical section of the L-shaped rod is symmetrically connected to two guide wheels for limiting the cable, and the cable passes between the two guide wheels.

5. The performance testing device for a container-trailer vehicle assembly according to claim 1, characterized in that: The adjustable pulling mechanism includes a column base rotatably connected to the end face of the detection platform and a plate platform hinged on the column base through a lug. The end face of the plate platform is slidably connected to a slide plate through a slider group. The end face of the plate platform and the side of the slide plate away from the annular supporting plate are respectively fixedly connected to a strip-shaped seat with an upper opening. The wall panels on one side of the two strip-shaped seats close to each other are equidistantly provided with a number of slots, and a tensile member is commonly clamped between the two opposite slots.

6. The performance testing device for a container-trailer vehicle assembly according to claim 5, characterized in that: The stretching member includes two clamping columns for clamping in the clamping slots, and two limit rings distributed along the axial direction are symmetrically fixedly connected to the outside of the clamping columns. The opposite ends of the two clamping columns are fixedly connected to connecting blocks, and a tension spring is fixedly connected between the two connecting blocks.

7. The performance testing device for a container-trailer vehicle assembly according to claim 5, characterized in that: A transverse groove connected to the clamping groove is provided on the vertical wall plate of the strip-shaped seat, and a pin plate is slidably connected in the transverse groove.

8. The performance testing device for a container-trailer vehicle assembly according to claim 5, characterized in that: The clamping mechanism includes a placement plate fixedly connected to the side of the slide close to the axis of the annular carrier plate, a mounting through hole is provided on the placement plate, and a mounting groove connected to the mounting through hole is provided on the upper end surface of the placement plate. A plurality of limit columns are fixedly connected to the bottom of the mounting groove at equal distances along the circumferential direction of the mounting through hole, a cover plate is slidably connected to the mounting groove, and a reset spring is fixedly connected between the cover plate and the wall of the mounting groove.

9. The performance testing device for container-trailer truck components according to claim 8, characterized in that: A limiting strip affixed to the upper surface of the cover plate is fixedly connected to a side groove wall of the installation groove extending radially along the annular carrier plate.

10. The performance testing device for container-trailer vehicle components according to claim 1, characterized in that: The driving mechanism includes two shifting posts symmetrically fixedly connected to the lower end surface of the annular carrier plate and two hydraulic telescopic rods symmetrically distributed and hinged to the end surface of the detection table. One end of the hydraulic telescopic rod close to the axis of the annular carrier plate is hinged to the shifting post.

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