Container double-trailer assembly performance detection device

Abstract

The invention discloses a container double-trailer assembly performance detection device, and relates to the technical field of trailer traction pin performance detection. The container double-trailer assembly performance detection device comprises a detection table, the upper end face of the detection table is rotatably connected with an annular bearing disc, the upper portion of a movable bearing frame is provided with a saddle, and when a combined detection driving mechanism drives the saddle to move longitudinally, the combined detection driving mechanism can be used for simulating axial friction between the saddle and a traction pin when bumping drives the saddle to move longitudinally. The combined detection driving mechanism, the adjustable traction mechanism and the driving mechanism are combined with one another, the traction pin can be detected in different aspects at the same time, the combined detection driving mechanism and the adjustable traction mechanism are combined, the traction pin is subjected to multiple detection at the same time, integrated detection is achieved, and the detection efficiency is improved. Meanwhile, complex working conditions of the traction pin in actual work can be simulated, so that the detection process is closer to actual use, the comprehensive performance of the traction pin is accurately reflected, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of performance detection of trailer towing pins, and specifically to a performance detection device for a container double-trailer vehicle component. Background Art

[0002] The container double-trailer vehicle component is a heavy-duty towing system designed specifically for transporting containers, and is usually used for towing vehicles that need to transport large, heavy goods or containers. The container double-trailer system usually consists of a tractor (the tractor part) and a trailer (the part that carries the goods), and the two are tightly combined through various connecting devices. Among them, the towing pin is one of the key components connecting the tractor and the trailer, and is usually located under the front of the trailer. Its main function is to provide a strong connection point so that the saddle on the tractor can be connected to it, and then reliably tow the trailer. The towing pin bears huge stresses when bearing traction and braking forces, especially in the case of high load, frequent braking, starting and turning. In the container double-trailer system, the towing pin not only bears tensile force, but also resists lateral shear force. Therefore, the strength, wear resistance and durability of the towing pin are crucial.

[0003] The performance detection of the towing pin is usually in multiple aspects, such as wear resistance, tensile shear, etc. The existing detection equipment can only test a certain performance of the towing pin. This means that to comprehensively understand all the performances of the towing pin, multiple tests must be carried out. Each different test requires the towing pin to be transferred to different detection equipment, resulting in a long time required for the towing pin to complete the entire detection process, and the entire detection cycle is long.

[0004] Moreover, since the wear of the towing pin comes from multiple aspects, for example: 1), the change in tensile force caused by the trailer carrying heavy goods; 2), frequent starting, braking and rapid acceleration; 3), when the tractor and the trailer are driving, due to factors such as uneven road surface and vehicle turning, the relative movement between the towing pin and the saddle is caused, and the contact angle between the towing pin and the saddle changes, and this change will cause the friction point to change continuously; however, the existing wear resistance and tensile shear detections are usually in a single direction and often cannot simulate these multi-faceted working conditions at the same time, and the wear of the towing pin is mainly caused by the combined action of the above multiple factors, which makes the actual use performance of the towing pin unable to be comprehensively evaluated, resulting in the detection 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 detection device for a container double-trailer vehicle component, which solves the technical problems that existing kingpin detection devices can usually only test a single performance, such as wear resistance or tensile shear force, and cannot simultaneously evaluate the comprehensive performance of the kingpin under various working conditions, resulting in the need for multiple tests and the transfer of the kingpin to different devices, prolonging the detection cycle, and being unable to simulate complex working conditions and comprehensively reflect the performance of the kingpin in actual use.

[0006] A performance detection device for a container double-trailer vehicle component provided by the present invention includes a detection table. A ring-shaped bearing plate is rotatably connected to the upper end surface of the detection table. A plurality of movable bearing frames are circumferentially and equidistantly arranged on the upper end surface of the ring-shaped bearing plate. A saddle is arranged on the upper part of the movable bearing frame. A combined detection driving mechanism for driving the saddle to move longitudinally and transversely is jointly arranged between the upper part of the ring-shaped bearing plate and the movable 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 kingpin when the saddle moves longitudinally driven by bumps. When the combined detection driving mechanism drives the saddle to move transversely, it can intermittently pull the saddle to simulate the impact on the kingpin caused by the inertia of the saddle during starting or sudden stopping. A plurality of adjustable pulling mechanisms corresponding to the movable bearing frames are circumferentially and equidistantly arranged on the upper end surface of the detection table. A clamping mechanism for quickly installing and limiting the detection kingpin is arranged on the adjustable pulling mechanism. A driving mechanism for driving reciprocating rotation is jointly arranged between the detection table and the ring-shaped bearing plate. The driving mechanism is used to indirectly drive the movable bearing frame, the clamping mechanism, and the adjustable pulling mechanism to cooperate with each other to simulate the side pressure and circumferential friction of the kingpin at different positions during the turning of the tractor. The combination of the combined detection driving mechanism, the adjustable pulling mechanism, and the driving mechanism can simultaneously detect the kingpin in different aspects.

[0007] In a possible implementation manner, the movable bearing frame includes two symmetrically arranged chutes opened on the upper end surface of the ring-shaped bearing plate. A support is slidably connected in each chute. Two vertical slots are symmetrically opened on the support. An L-shaped support plate is slidably connected between the two vertical slots 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 slot. The saddle is fixedly connected to the upper end surfaces of the two vertical sections of the L-shaped support plate.

[0008] In a possible implementation manner, the combined detection driving mechanism includes a reciprocating electric telescopic rod fixedly connected to the inner cavity of the annular bearing plate and located at the center of the circle through a transverse plate, a support column fixedly connected to the upper end of the reciprocating electric telescopic rod, a longitudinal pushing assembly jointly arranged between the L-shaped support plate and the support column, and a transverse pulling assembly jointly arranged between the support seat and the support column. The longitudinal pushing assembly includes a strip-shaped box fixedly connected by a connecting rod on the side of two corresponding L-shaped support plates close to the center of the annular bearing plate, and a plurality of push plates circumferentially and equidistantly fixedly connected to the outer wall of the support column and corresponding to the strip-shaped box. The push plates are slidably arranged in the strip-shaped box. A set of insertion holes are symmetrically opened up and down on the two opposite vertical wall plates of the strip-shaped box, and the set of insertion holes is composed of a plurality of through holes opened on the vertical wall plates of the strip-shaped box. A pin is commonly threadedly connected between two laterally opposite through holes.

[0009] In a possible implementation manner, the transverse pulling assembly includes a cable. A cable is fixedly connected to the side of the support seat close to the support column. A plurality of L-shaped rods corresponding to the cable are circumferentially and fixedly connected to the inner circumferential wall of the annular bearing plate. Two guiding wheels for limiting the cable are rotatably connected to the upper and lower symmetric side end faces of the vertical section of the L-shaped rod, and the cable passes between the two guiding wheels.

[0010] In a possible implementation manner, the adjustable pulling mechanism can flexibly adjust the pulling force received by the traction pins at different workstations, so as to synchronously compare the lateral pressure detections of the traction pins at different positions under different variables. The adjustable pulling mechanism includes a column base rotatably connected to the upper end face of the detection table and a plate platform hinged to the column base through a lug. The upper end face of the plate platform is slidably connected with a sliding plate through a slider group. Strip-shaped seats with upper openings are respectively fixedly connected to the upper end face of the plate platform and the side of the sliding plate away from the annular bearing plate. A plurality of card slots are equidistantly opened on the side walls of the two strip-shaped seats close to each other. A stretching member is commonly clamped between two opposite card slots.

[0011] In a possible implementation manner, the stretching member includes two clamping columns for being clamped in the card slots. Two limiting rings axially distributed along the clamping columns are symmetrically fixedly connected to the outside of the clamping columns. Connecting blocks are fixedly connected to the opposite ends of the two clamping columns, and a tension spring is fixedly connected between the two connecting blocks.

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

[0013] In a possible implementation, the card loading mechanism includes a placement plate fixedly connected to one side of the sliding plate close to the axis of the annular bearing plate. An installation through hole is provided on the placement plate, and an installation groove communicating with the installation through hole is provided on the upper end surface of the placement plate. A plurality of limiting columns are fixedly connected to the bottom of the installation groove at equal intervals along the circumferential direction of the installation through hole. A cover plate is slidably connected in the installation groove, and a return spring is fixedly connected between the cover plate and the groove wall of the installation groove.

[0014] In a possible implementation, a limiting strip fitting on the upper surface of the cover plate is fixedly connected to the side groove wall of the installation groove extending along the radial direction of the annular bearing plate.

[0015] In a possible implementation, the driving mechanism includes two dial posts symmetrically and fixedly connected to the lower end surface of the annular bearing plate and two hydraulic telescopic rods hinged to the upper end surface of the detection table and distributed centrosymmetrically. One end of the hydraulic telescopic rod close to the axis of the annular bearing plate is hinged to the dial post.

[0016] As can be seen from the above technical solutions, the present invention has the following advantages: In the present invention, the combined detection driving mechanism and the adjustable dragging mechanism are combined with each other, and the friction during the steering of the traction pin, the axial friction and the contact angle change during bumping, and the anti-impact under inertial motion can be detected simultaneously, realizing the integrated detection of combining multiple detection items in one detection process, which not only improves the efficiency, but also reduces the time cost required for manual operation and transfer. 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, making the detection process closer to the performance of the traction pin in actual use, and thus more accurately reflecting the comprehensive performance of the traction pin in actual use, improving the accuracy of the detection results.

[0017] In the present invention, by adjusting the pulling force of the adjustable dragging mechanism on the traction pin at different workstations, the circumferential friction caused by the pulling force of different heavy objects on the traction pin during steering is simulated, so as to accurately measure and compare the specific effects of different weights of traction loads 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, enhancing the reliability of the 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 kingpin and the saddle caused by road surface bumps, which can dynamically reproduce the change of the friction point between the kingpin and the saddle, make the friction point outside the kingpin simulate the dynamic change in the actual working condition, and simulate the impact of inertia on the kingpin during frequent starts, rapid accelerations and sudden stops. It covers the simulation of multiple working conditions at one time, more accurately reflects the actual use situation of the kingpin under multiple dynamic working conditions, and further improves the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

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

[0021] Figure 2 FIG. is a schematic diagram of a partial structure of the performance detection device for the container double-trailer vehicle component provided by the present invention.

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

[0023] Figure 4 Provided by the present invention Figure 3 Schematic diagram of the enlarged structure of part A in

[0024] Figure 5 FIG. is a schematic diagram of the structure of the adjustable towing mechanism provided by the present invention.

[0025] Figure 6 Provided by the present invention Figure 5 Schematic diagram of the enlarged structure of part B in

[0026] Figure 7 FIG. is a schematic diagram of the structure of the adjustable towing mechanism from the bottom view provided by the present invention.

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

[0028] Figure 9 FIG. is a schematic diagram of a partial structure of the clamping mechanism provided by the present invention.

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

[0030] Among them, the above-mentioned drawings include the following reference numerals: 1, inspection table; 2, annular carrier plate; 3, movable carrier frame; 31, chute; 32, support; 33, L-shaped support plate; 4, saddle; 5, combined inspection driving mechanism; 51, reciprocating electric telescopic rod; 52, pillar; 53, longitudinal pushing component; 531, strip box; 532, push plate; 533, through hole; 534, pin; 54, transverse pulling component; 541, cable; 542, guide wheel; 6, adjustable pulling mechanism; 61, column base; 62, plate platform; 63, sliding plate; 64, strip seat; 65, card slot; 66, stretching component; 661, clamping column; 662, limit ring; 663, tension spring; 7, clamping mechanism; 71, placement plate; 72, mounting through hole; 73, mounting groove; 74, limit column; 75, cover plate; 8, driving mechanism; 81, dialing column; 82, hydraulic telescopic rod; 9, transverse groove; 10, pin plate. Detailed implementation manners

[0031] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0032] Please refer to Figure 1 , Figure 2 and Figure 3, the present invention provides a technical solution: a performance detection device for a container double-trailer vehicle component, including a detection table 1. A ring-shaped bearing plate 2 is rotatably connected to the upper end surface of the detection table 1. A plurality of movable bearing frames 3 are circumferentially and equidistantly arranged on the upper end surface of the ring-shaped bearing plate 2. A saddle 4 (the saddle 4 is a device on an existing tractor) is arranged on the upper part of the movable bearing frame 3. A combined detection driving mechanism 5 for driving the saddle 4 to move longitudinally and transversely is jointly arranged between the upper part of the ring-shaped bearing plate 2 and the movable bearing frame 3. When the combined detection 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 kingpin when the saddle 4 moves longitudinally driven by bumps. When the combined detection driving mechanism 5 drives the saddle 4 to move transversely, it can also intermittently pull the saddle 4 to simulate the impact on the kingpin caused by the inertia of the saddle 4 during starting or sudden stopping. A plurality of adjustable pulling mechanisms 6 corresponding to the movable bearing frames 3 are circumferentially and equidistantly arranged on the upper end surface of the detection table 1. A clamping mechanism 7 for quickly installing and limiting the detection kingpin is arranged on the adjustable pulling mechanism 6. A driving mechanism 8 for driving reciprocating rotation is jointly arranged between the detection table 1 and the ring-shaped bearing plate 2. The driving mechanism 8 is used to indirectly drive the movable bearing frame 3, the clamping mechanism 7, and the adjustable pulling mechanism 6 to cooperate with each other to simulate the side pressure and circumferential friction of the kingpin under traction at different positions when the tractor turns. The adjustable pulling mechanism 6 can flexibly adjust the pulling force received by the kingpins at different workstations, so as to synchronously compare the side pressure detection of the kingpins at different positions under different variables. The combined detection driving mechanism 5, the adjustable pulling mechanism 6, and the driving mechanism 8 can be combined with each other to simultaneously detect the kingpin in different aspects.

[0033] Please refer to 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 table 1 and a plate platform 62 hinged to the column base 61 through a lug. A slide plate 63 is slidably connected to the upper end surface of the plate platform 62 through a slider group. Strip-shaped seats 64 with upper openings are respectively fixedly connected to the upper end surface of the plate platform 62 and the side of the slide plate 63 away from the ring-shaped bearing plate 2. A plurality of card slots 65 are equidistantly opened on the side walls of the two strip-shaped seats 64 close to each other. A stretching member 66 is jointly clamped between two opposite card slots 65. A transverse groove 9 communicating with the card slot 65 is opened on the vertical wall plate of the strip-shaped seat 64. A pin plate 10 is slidably connected in the transverse groove 9.

[0034] Please refer to Figure 6 and Figure 8, the stretching member 66 includes two clamping posts 661 for clamping in the clamping slots 65. Symmetrically fixed to the outside of the clamping posts 661 are two limiting rings 662 distributed along their own axial directions. Fixedly connected to the opposite ends of the two clamping posts 661 are connecting blocks, and a tension spring 663 is fixedly connected between the two connecting blocks.

[0035] Please refer to Figure 2 , Figure 5 , Figure 7 and Figure 9 , the clamping mechanism 7 includes a placement plate 71 fixedly connected to one side of the sliding plate 63 close to the axis of the annular bearing plate 2. An installation through hole 72 is formed in the placement plate 71. An installation groove 73 communicating with the installation through hole 72 is formed on the upper end surface of the placement plate 71. Along the circumferential direction of the installation through hole 72 at equal intervals, a number of limiting posts 74 are fixedly connected to the bottom of the installation groove 73. A cover plate 75 is slidably connected in the installation groove 73. A return spring is fixedly connected between the cover plate 75 and the groove wall of the installation groove 73. A limiting strip fitting on the upper surface of the cover plate 75 is fixedly connected to the side groove wall of the installation groove 73 extending along the radial direction of the annular bearing plate 2.

[0036] Please refer to Figure 1 and Figure 2 , the driving mechanism 8 includes two dial posts 81 symmetrically fixedly connected to the lower end surface of the annular bearing plate 2 and two hydraulic telescopic rods 82 symmetrically distributed and hinged to the upper end surface of the detection table 1. One end of the hydraulic telescopic rod 82 close to the axis of the annular bearing plate 2 is hinged to the dial post 81.

[0037] First, manually move the cover plate 75 in a direction away from the center of the annular bearing plate 2 to open the area above the installation through hole 72. Then, place the traction pin into the installation through hole 72. The lower half of the traction pin extends out from the lower part of the installation through hole 72. At the same time, adjust the position of the traction pin so that its installation hole is aligned with the limiting posts 74. Then, continue to move the traction pin downward until the circular seat on the upper half of the traction pin abuts against the bottom of the installation groove 73. Then, release the dialed cover plate 75. The return spring extends to reset and push the cover plate 75 in the direction of the axis of the annular bearing plate 2. After the cover plate 75 moves back and abuts against the upper end surface of the traction pin, the traction pin for detection can be quickly installed and limited. Then, manually push the sliding plate 63 to move closer to the annular bearing plate 2. The sliding plate 63 drives the placement plate 71 to move, and the placement plate 71 drives the traction pin to move until the traction pin slides into the saddle 4 and is clamped with the saddle 4.

[0038] Then, select an appropriate number of stretching members 66 according to the tensile force requirement. Then, insert the two clamping posts 661 of the stretching member 66 into the clamping grooves 65 respectively, so that the limiting rings 662 are located on both sides of the clamping grooves 65 (when it is necessary to conduct synchronous comparison tests on the traction pins at different workstations under different tensile force variables, the stretching members 66 in each adjustable pulling mechanism 6 can be set to different numbers). After all the selected stretching members 66 are placed in the clamping grooves 65, manually insert the pin plate 10 into the transverse groove 9. The pin plate 10 is located above the clamping posts 661 to limit the stretching member 66.

[0039] Then, control the hydraulic telescopic rod 82 to repeat the actions of extending and shortening. When the hydraulic telescopic rod 82 extends, it pushes the dial post 81 to perform circumferential movement around the axis of the annular bearing plate 2. The dial post 81 then drives the annular bearing plate 2 to rotate. The annular bearing plate 2 then drives the saddle 4 to rotate through the movable bearing frame 3. The saddle 4 then pulls the placement plate 71 to move through the traction pin. The placement plate 71 then moves through the sliding plate 63. The movement of the sliding plate 63 further stretches the stretching member 66. The stretching of the stretching member 66 is used to simulate the tensile force received by the traction pin during cargo pulling. While the traction pin indirectly pulls the sliding plate 63 to slide on the plate table 62, the plate table 62 will drive the column base 61 to rotate, and then indirectly rotate the traction pin. The traction pin and the saddle 4 rotate out of position, and further, the friction received by the traction pin when turning can be simulated.

[0040] After the hydraulic telescopic rod 82 extends to the longest stroke, it will gradually contract, and then pull the annular bearing plate 2 to rotate in the reverse direction through the dial post 81. The annular bearing plate 2 will perform the above steps in the reverse direction, so that the traction pin and the saddle 4 rotate out of position again, thereby enabling the wear detection of the traction pin when it is subjected to tensile force and turning.

[0041] When the annular bearing plate 2 reciprocates and rotates for a specified duration, control the hydraulic telescopic rod 82 to stop running. Then, pull the cover plate 75 away, remove the traction pin and use measuring equipment to measure its diameter, and compare it with the diameter size of the traction pin before the test, so as to check its wear degree.

[0042] Please refer to Figure 3 and Figure 4 In this embodiment, the movable bearing frame 3 includes two symmetrically arranged sliding grooves 31 on the upper end surface of the annular bearing plate 2. A support 32 is slidably connected in each of the sliding grooves 31. Two vertical grooves are symmetrically opened on the support 32. 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. The saddle 4 is fixedly connected to the upper end surfaces of the vertical sections of the two L-shaped support plates 33.

[0043] Please refer to Figure 3 、 Figure 4 and Figure 10, the combined detection driving mechanism 5 includes a reciprocating electric telescopic rod 51 fixedly connected in the inner cavity of the annular bearing plate 2 and located at the center through a transverse plate, a support column 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 support column 52, and a transverse pulling component 54 jointly arranged between the support 32 and the support column 52. The longitudinal pushing component 53 includes a strip-shaped box 531 fixedly connected by a connecting rod on the side of the corresponding two L-shaped support plates 33 close to the center of the annular bearing plate 2, and a plurality of push plates 532 circumferentially and equidistantly fixedly connected to the outer wall of the support column 52 and corresponding to the strip-shaped box 531. The push plates 532 are slidably arranged in the strip-shaped box 531. A jack group is symmetrically opened up and down on the two opposite vertical wall plates of the strip-shaped box 531, and the jack group is composed of a plurality of through holes 533 opened on the vertical wall plates of the strip-shaped box 531. A plug pin 534 is commonly screwed between the two horizontally opposite through holes 533.

[0044] Please refer to Figure 4 , the transverse pulling component 54 includes a cable 541. A cable 541 is fixedly connected to the side of the support 32 close to the support column 52. A plurality of L-shaped rods corresponding to the cable 541 are circumferentially fixedly connected to the inner wall of the circumferential surface of the annular bearing plate 2. Two guiding wheels 542 for limiting the cable 541 are symmetrically rotatably connected to the upper and lower side end faces of the vertical section of the L-shaped rod, and the cable 541 passes between the two guiding wheels 542.

[0045] Before the detection work is carried out, move the plug pin 534 to the through holes 533 at different height positions and then screw it in spirally, so as to adjust the longitudinal misalignment movement stroke amount between the saddle 4 and the traction pin, and the contact angle between the two when simulating different degrees of bumpy movements of the saddle 4 and the traction pin subsequently. The hydraulic telescopic rod 82 drives the annular bearing plate 2 to rotate reciprocally while controlling the reciprocating electric telescopic rod 51 to repeatedly perform the actions of extending and shortening. When the reciprocating electric telescopic rod 51 extends, it first drives the support column 52 to move upward. The support column 52 then drives the push plate 532 to move upward. The push plate 532 slides upward in the strip-shaped box 531. When the push plate 532 moves upward to abut against the plug pin 534, it will drive the strip-shaped box 531 to move upward synchronously through the plug pin 534. The strip-shaped box 531 then drives the L-shaped support plate 33 to move upward synchronously through the connecting rod. The L-shaped support plate 33 drives the saddle 4 to move upward, and when the saddle 4 moves upward, there will be a vertical misalignment movement with the traction pin.

[0046] When the reciprocating electric telescopic rod 51 contracts, the support column 52 is driven to move downward. The support column 52 then drives the push plate 532 to move downward. When the push plate 532 moves downward and touches the lower pin 534, it will press the strip box 531 to move downward. The strip box 531 then indirectly drives the L-shaped support plate 33 to move downward. The L-shaped support plate 33 then drives the saddle 4 to move downward, causing the saddle 4 and the drawbar to be vertically misaligned again. Thus, the misalignment movement between the drawbar and the saddle 4 and the change in the contact angle between the two when encountering a bumpy road section can be simulated, enabling the friction points on the outside of the drawbar to simulate the dynamic changes in actual working conditions.

[0047] The reciprocating electric telescopic rod 51 drives the support column 52 to move up and down reciprocally, and at the same time, it will also trigger the operation of the horizontal pulling assembly 54. When the support column 52 is pushed upward from the initial state, the cable 541 is in a slack state. When the support column 52 rises to a certain height, it will quickly pull the cable 541 into a taut state. The cable 541 then quickly drags the support 32 to move closer to the reciprocating electric telescopic rod 51. The support 32 then drives the saddle 4 to move quickly through the L-shaped support plate 33, simulating the impact of inertial motion on the drawbar during frequent starts, sudden accelerations, and sudden stops. When the support column 52 moves downward, the above steps can be repeated in reverse. The cable 541 will first experience a slack state, and then when the support column 52 moves downward a certain distance, the cable 541 will be pulled quickly taut, and then it will pull the support 32 to move closer to the reciprocating electric telescopic rod 51 again, simulating the impact of inertia on the drawbar again.

[0048] By using the cooperation of the longitudinal push assembly 53 and the horizontal pull assembly 54, the misalignment movement friction of the drawbar, the dynamic change of the friction point caused by the change in the contact angle between the drawbar and the saddle 4, and the impact of inertial motion on the drawbar can be realized simultaneously.

[0049] Please refer to Figures 1 - 10 , during operation, first place the drawbar into the clamping mechanism 7 for installation and positioning. Then move the position of the clamping mechanism 7 so that the drawbar is clamped together with the saddle 4. Then control the driving mechanism 8 and the combined detection and driving mechanism 5 to run synchronously. The driving mechanism 8 drives the annular bearing plate 2 to rotate reciprocally. The annular bearing plate 2 then triggers the adjustable pulling mechanism 6 to run, simulating the tension on the drawbar during transportation and simulating the misalignment state between the drawbar and the saddle 4 during turning, thereby realizing the friction test of the drawbar. When the combined detection and driving mechanism 5 runs, it drives the saddle 4 to move longitudinally, causing a vertical misalignment movement between the saddle 4 and the drawbar. At the same time, it drives the saddle 4 to move quickly horizontally, causing the saddle 4 to impact the drawbar, and it can also simulate the misalignment movement between the drawbar and the saddle 4 and the change in the contact angle between the two when encountering a bumpy road section, enabling the friction points on the outside of the drawbar to simulate the dynamic changes in actual working conditions, as well as simulating the impact of inertial motion on the drawbar during frequent starts, sudden accelerations, and sudden stops, and simulating multiple different working conditions simultaneously to detect the drawbar in different aspects.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 thus should not be construed as a limitation to the present invention.

[0051] In addition, the terms "first", "second", "No. 1", "No. 2" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "No. 1", "No. 2" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A performance detection device for a double-trailer container vehicle assembly, comprising a detection table, characterized in that: A ring-shaped bearing plate is rotatably connected to the upper end surface of the inspection table. A number of movable bearing frames are circumferentially and equidistantly arranged on the upper end surface of the ring-shaped bearing plate. A saddle is arranged on the upper part of the movable bearing frame. A combined inspection driving mechanism for driving the saddle to move longitudinally and transversely is jointly arranged between the upper part of the ring-shaped bearing plate and the movable bearing frame. When the combined inspection driving mechanism drives the saddle to move longitudinally, it is used to simulate the axial friction between the saddle and the drawbar pin when the saddle is longitudinally moved by simulating bumps. When the combined inspection driving mechanism drives the saddle to move transversely, it intermittently pulls the saddle to simulate the impact of the saddle on the drawbar pin under inertia during starting or sudden stopping. A number of adjustable pulling mechanisms corresponding to the movable bearing frames are circumferentially and equidistantly arranged on the upper end surface of the inspection table. A clamping mechanism for quickly installing and limiting the inspection drawbar pin is arranged on the adjustable pulling mechanism. A driving mechanism for driving reciprocating rotation is jointly arranged between the inspection table and the ring-shaped bearing plate. The driving mechanism is used to indirectly drive the movable bearing frame, the clamping mechanism and the adjustable pulling mechanism to cooperate with each other, so as to simulate the side pressure and circumferential friction of the drawbar pin by the traction at different positions when the tractor turns. The combination of the combined inspection driving mechanism, the adjustable pulling mechanism and the driving mechanism simultaneously performs different aspects of inspection on the drawbar pin.

2. The performance detection device for a container double-trailer vehicle component according to claim 1, wherein: The movable bearing frame includes two symmetrically arranged chutes opened on the upper end surface of the ring-shaped bearing plate. A support is slidably connected in each chute. Two vertical chutes are symmetrically opened on the support. An L-shaped support plate is slidably connected between the two vertical chutes 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 chute. The saddle is fixedly connected to the upper end surfaces of the two vertical sections of the L-shaped support plate.

3. The performance detection device for a container double-trailer vehicle component according to claim 2, wherein: The combined inspection driving mechanism includes a reciprocating electric telescopic rod fixedly connected to the inner cavity of the ring-shaped bearing plate and located at the center through a cross plate, a support column fixedly connected to the upper end of the reciprocating electric telescopic rod, a longitudinal pushing component jointly arranged between the L-shaped support plate and the support column, and a transverse pulling component jointly arranged between the support and the support column. The longitudinal pushing component includes a strip-shaped box fixedly connected by a connecting rod on the side of the corresponding two L-shaped support plates close to the center of the ring-shaped bearing plate, and a number of push plates circumferentially and equidistantly fixedly connected to the outer wall of the support column and corresponding to the strip-shaped box. The push plates are slidably arranged in the strip-shaped box. A group of insertion holes are symmetrically opened up and down on the two opposite vertical wall plates of the strip-shaped box. The group of insertion holes is composed of a number of through holes opened on the vertical wall plates of the strip-shaped box. A plug pin is threadedly connected between the two horizontally opposite through holes.

4. The performance detection device for a container double-trailer vehicle component according to claim 3, wherein: The transverse pulling component includes a cable. A cable is fixedly connected to the side of the support close to the support column. A number of L-shaped rods corresponding to the cable are circumferentially fixedly connected to the inner circumferential wall of the ring-shaped bearing plate. Two guiding wheels for limiting the cable are symmetrically rotatably connected to the side end surfaces of the vertical sections of the L-shaped rods, and the cable passes through between the two guiding wheels.

5. The performance detection device for a container double-trailer vehicle component according to claim 1, characterized in that: The adjustable pulling mechanism includes a column base rotatably connected to the upper end surface of the detection table and a plate base hinged to the column base through lugs. A sliding plate is slidably connected to the upper end surface of the plate base through a slider group. On the upper end surfaces of the plate base and the side of the sliding plate away from the annular bearing plate, strip-shaped seats with upper openings are respectively fixedly connected. On the side wall plates of the two strip-shaped seats close to each other, a plurality of card slots are equidistantly opened. A stretching member is jointly clamped between two opposite card slots.

6. The performance detection device for a container double-trailer vehicle component according to claim 5, characterized in that: The stretching member includes two clamping columns for being clamped in the card slots. On the outside of the clamping columns, two limiting rings distributed along the axial direction of the clamping columns are symmetrically fixedly connected. At the opposite ends of the two clamping columns, connecting blocks are fixedly connected. A tension spring is jointly fixedly connected between the two connecting blocks.

7. A performance detection device for a container double-trailer vehicle component according to claim 5, characterized in that: A transverse groove communicating with the card slot is opened on the vertical wall plate of the strip-shaped seat, and a pin plate is slidably connected in the transverse groove.

8. A performance detection device for a container double-trailer vehicle component according to claim 5, characterized in that: The clamping mechanism includes a placement plate fixedly connected to the side of the sliding plate close to the axis of the annular bearing plate. An installation through hole is opened on the placement plate, and an installation groove communicating with the installation through hole is opened on the upper end surface of the placement plate. A plurality of limiting columns are equidistantly fixedly connected to the bottom of the installation groove along the circumferential direction of the installation through hole. A cover plate is slidably connected in the installation groove, and a return spring is jointly fixedly connected between the cover plate and the groove wall of the installation groove.

9. A performance detection device for a container double-trailer vehicle component according to claim 8, characterized in that: A limiting strip fitting on the upper surface of the cover plate is fixedly connected to the side groove wall of the installation groove extending along the radial direction of the annular bearing plate.

10. A performance detection device for a container double-trailer vehicle component according to claim 1, characterized in that: The driving mechanism includes two dial columns symmetrically fixedly connected to the lower end surface of the annular bearing plate and two hydraulic telescopic rods symmetrically distributed and hinged to the upper end surface of the detection table. The end of the hydraulic telescopic rod close to the axis of the annular bearing plate is hinged to the dial column.

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