Auxiliary platform for rollover test of semitrailer

Abstract

The invention relates to the technical field of semitrailer tests, in particular to a semitrailer rollover test auxiliary platform. According to the technical scheme, the test platform comprises a test platform body, a rollover pressure auxiliary assembly is installed in the test platform body in a sliding mode, a loading assembly is installed at the top of the rollover pressure auxiliary assembly, two sets of loading ball transmission type assemblies are installed on the two sides of the inner wall of the test platform body in a sliding mode, and a pressure testing assembly is installed at the bottom of the test platform body. Half of the positioning ball columns and the arc-simulating hollow pipes are no longer used as components for clamping the carrying balls, and the other half of the positioning ball columns and the arc-simulating hollow pipes quickly separate the carrying balls by utilizing self-elasticity and the gravity of the carrying balls, so that the carrying balls are collected and redistributed; and therefore, different conditions of the semitrailer test articles can be reasonably distributed and tested, and the test efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of semitrailer testing, and in particular to a semitrailer rollover test auxiliary platform. Background Art

[0002] Semi-trailers are mainly used to transport goods, and the displacement and damage of goods during vehicle rollovers are crucial. The auxiliary platform can be used to test whether cargo fixing devices (such as ropes, tensioners, cargo box rails, etc.) can effectively restrain cargo in the event of a rollover to prevent the cargo from scattering, thereby reducing harm to other road users and the surrounding environment. Semi-trailers may roll over due to a variety of reasons (such as high-speed turns, poor road conditions, cargo center of gravity shift, etc.) during actual driving. The auxiliary platform can accurately simulate these rollover scenarios to help researchers understand the motion state of the semi-trailer during the rollover process.

[0003] In the patent document with the publication number CN117516962B, a safety auxiliary device for a semi-trailer rollover test is disclosed, which mainly relates to the field of semi-trailer safety detection technology. The safety auxiliary device for a semi-trailer rollover test comprises a bottom plate, a sandwich is provided in the bottom plate, a threaded sleeve is slidably installed in the sandwich, a threaded top rod is movably installed in the threaded sleeve, a symmetrical movably installed connecting seat 1 in the sandwich, the upper part of the connecting seat 1 is fixedly connected to the side plate, the lower support arms are rotatably installed at both ends of the bottom plate, a connecting seat 2 is slidably installed in the side plate, the upper support arm is rotatably connected to the upper support arm, the outer end of the upper support arm is fixedly connected to the support roller, and the lower end of the upper support arm is rotatably connected to the lower support arm away from one end of the rotation connection with the bottom plate, thereby achieving stable installation matching with a variety of different vehicles, without causing damage to the vehicle, and can effectively avoid the situation where the vehicle rolls over during the test and is damaged.

[0004] When the above device is in use, it uses the upper support arm and the connecting seat 2 to form a simulated positioning of the semi-trailer cargo fixing box, and then records the movement state when the semi-trailer rolls over. However, the main reason for the semi-trailer to roll over is that the center of gravity is unstable due to various situations encountered by the vehicle during driving. The current test method is to simulate the road conditions and obtain data by adjusting the distribution state of the heavy objects in the semi-trailer cargo box. The above device cannot cooperate well with the existing device to simulate the vehicle center of gravity problem and cause the semi-trailer to roll over, and the accuracy of the test data is low.

[0005] Therefore, the present application proposes a semi-trailer rollover test auxiliary platform. Summary of the invention

[0006] The purpose of the present invention is to propose a semi-trailer rollover test auxiliary platform to address the problem that the main cause of the rollover of a semi-trailer in the background technology is the unstable center of gravity caused by various situations encountered by the vehicle during driving, and the above-mentioned device cannot simulate the vehicle center of gravity problem well, which causes the rollover of the semi-trailer, and the accuracy of the test data is low.

[0007] The technical solution of the present invention is: a semi-trailer rollover test auxiliary platform, comprising a test platform, a rollover pressure auxiliary component is slidably installed inside the test platform, a load-bearing component is installed on the top of the rollover pressure auxiliary component, two groups of load-bearing ball transmission components are slidably installed on both sides of the inner wall of the test platform, and a pressure test component is installed at the bottom of the test platform; The test platform comprises a platform outer frame with a bottom surface on one side being an arc-shaped track, and a semi-trailer test product transmission cavity is provided inside the platform outer frame; The rollover pressure auxiliary assembly includes a pressure conduction plate attached to the top of the semi-trailer, and conduction blocks are fixedly installed on both sides of the pressure conduction plate; The load-bearing assembly includes two positioning and protection frames slidably installed on both sides of the conduction block, a positioning load-bearing plate is fixedly installed on the side of the positioning and protection frame facing the inner wall of the platform outer frame, one side of the positioning and protection frame is hinged with a snap-fitting rotating block through a deflection assembly, one side of the snap-fitting rotating block is fixedly installed with a deflectable load-bearing plate, the deflectable load-bearing plate and the positioning load-bearing plate form a load-bearing ball wrapping ring, the bottom of the deflectable load-bearing plate and the positioning load-bearing plate are fixedly installed with a placement frame plate, a plurality of simulated arc hollow tubes are fixedly installed on the inner wall of the placement frame plate, the plurality of simulated arc hollow tubes are arranged in a ring state with respect to the load-bearing ball wrapping ring, a positioning ball column is slidably installed inside the simulated arc hollow tube, and a first spring is fixedly installed between the simulated arc hollow tube and the positioning ball column.

[0008] Optionally, two first threaded rods are fixedly installed inside the platform outer frame, and the outer sides of the two first threaded rods are threadedly connected to an internal threaded plate. The internal threaded plate is slidably installed inside the platform outer frame, and an auxiliary rotating rod is rotatably installed on one side of the internal threaded plate, and the pressure conduction plate is fixedly installed on the side of the auxiliary rotating rod away from the internal threaded plate.

[0009] Optionally, the load-bearing assembly further comprises a first forward and reverse motor fixedly mounted on the top of the conduction block, and a second bevel gear is fixedly mounted on an output shaft of the first forward and reverse motor.

[0010] Optionally, two first bevel gears are meshedly installed on both sides of the second bevel gear, and the same number of snap-fit ​​rotating blocks are fixedly installed on one side of the two first bevel gears, and the two snap-fit ​​rotating blocks are rotatably installed on one side of the conduction block.

[0011] Optionally, the positioning protection frame is threadedly mounted on the outer side of the snap-fitting rotating block, and the positioning protection frame is slidably mounted on one side of the conduction block through the thread conduction of the snap-fitting rotating block.

[0012] Optionally, the load-bearing ball transmission component includes two sets of load-bearing ball transmission component fixed slides slidably installed on both sides of the platform outer frame, a first ball guide plate is rotatably installed on one side of the load-bearing ball transmission component fixed slide, and a second ball guide plate is rotatably installed in the middle of the load-bearing ball transmission component fixed slide.

[0013] Optionally, a positioning rotating column is fixedly installed on one side of the first ball guide plate, and a receiving rotating rod is fixedly installed on the side of the second ball guide plate facing the positioning rotating column.

[0014] Optionally, the receiving type rotating rod is rotatably installed inside the fixed slide of the load-bearing ball transmission type assembly, and a second spring is fixedly installed at the connection between the receiving type rotating rod and the fixed slide of the load-bearing ball transmission type assembly, the receiving type rotating rod passes through one side of the fixed slide of the load-bearing ball transmission type assembly and is fixedly installed with a front gear block, and a long linkage block is fixedly installed on the side of the positioning rotating column facing the front gear block, and the long linkage block is adapted to the front gear block.

[0015] Optionally, a rear gear is slidably installed on one side of the receiving type rotating rod through a sliding groove, and a third spring is fixedly installed at the connection between the rear gear and the receiving type rotating rod, a short linkage block adapted to the rear gear is fixedly installed on one side of the positioning rotating column, a gear rotating block is rotatably installed on one side of the fixed slide plate of the load-bearing ball transmission type assembly, a handle rod is fixedly installed on the bottom of the gear rotating block, a connecting long rod is fixedly installed on one side of the handle rod, and the connecting long rod is hinged at the bottom of the second ball guide plate.

[0016] Optionally, the pressure test assembly includes a pressure-bearing protective plate hinged at the bottom of the test article transmission chamber of the semi-trailer, a built-in pressure-measuring hydraulic rod hinged on the side wall of the pressure-bearing protective plate, and the built-in pressure-measuring hydraulic rod is fixedly installed at the bottom of the test article transmission chamber of the semi-trailer.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the semi-trailer test product rolls over to the specified position, the deflection component drives the deflectable load plate to deflect along the positioning protection frame through the snap-fitting rotating block. At this time, half of the positioning ball column and the simulated arc hollow tube are no longer used as components for clamping the load ball. The other half of the positioning ball column and the simulated arc hollow tube use their own elastic force and the gravity of the load ball to quickly disengage the load ball, thereby collecting and redistributing the load ball, and then better reasonably distributing and testing the different conditions of the semi-trailer test product, improving the efficiency of the test; 2. The load ball transmission component transports the corresponding load ball to the positioning load plate and the deflectable load plate. At this time, as the two snap-fitting rotating blocks rotate, the two positioning protection frames move toward each other. According to the induction of the pressure test component, the specific state of the semi-trailer test product when the load ball moves toward the central area of ​​the semi-trailer test product can be understood, so as to understand the rollover impact of the semi-trailer test product with the change of position when the weight on both sides is symmetrical, and then it is more convenient to obtain comparative data; 3. When the load-bearing assembly passes through the semi-trailer test product and deflects synchronously due to rollover, or the staff uses the deflection assembly to actively deflect the deflectable load plate, causing the load ball to fall from the load-bearing assembly, the load ball transmission assembly is used to prevent the load ball from falling and damaging the equipment and to locate and recover the load ball, thereby facilitating the rapid distribution of the load ball later; 4. The gear rotating block is rotated under pressure to drive the handle bar and the connecting long rod to deflect together, until the second ball guide plate is opened along the fixed slide plate of the load ball transmission assembly, so that the load ball located in the middle moves to the positioning load plate and the deflectable load plate in the middle, thereby completing the simulation of the middle condition of the semi-trailer test product, and then relatively simply simulating various conditions of the semi-trailer test product, and the experimental efficiency is high and it has high safety; 5. The built-in pressure-measuring hydraulic rod records the corresponding transmission pressure through the pressure sensing component installed at the connection with the pressure-bearing protective plate, and supports the pressure-bearing protective plate and the semi-trailer test product to improve safety, thereby providing data for the later manufacturing of the semi-trailer support component, thereby improving the quality of semi-trailer manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural schematic diagram of a ball guide plate of the present invention is provided; Figure 2 A schematic structural diagram of the pressure conduction plate of the present invention is given; Figure 3 Given Figure 2 Enlarged view of the middle A area; Figure 4 A schematic structural diagram of the receiving type rotating rod of the present invention is given; Figure 5 A structural schematic diagram of a built-in pressure-measuring hydraulic rod of the present invention is given; Figure 6 A structural schematic diagram of the positioning load plate of the present invention is given; Figure 7 Given Figure 6 Enlarged view of the middle B area; Figure 8 A structural schematic diagram of the positioning protection frame of the present invention is given; Fig. 9 Given Figure 8 Enlarged view of the middle C area; Fig.10 A structural schematic diagram of the positioning ball column of the present invention is given.

[0019] Figure numerals: 1. test platform; 101. platform outer frame; 102. semi-trailer test product transmission chamber; 2. rollover pressure auxiliary component; 201. pressure conduction plate; 202. conduction block; 203. first threaded rod; 204. built-in threaded plate; 205. auxiliary rotating rod; 3. load-bearing component; 301. deflectable load-bearing plate; 302. positioning load-bearing plate; 303. placement frame plate; 304. simulated arc hollow tube; 305. positioning ball column; 306. first forward and reverse motor; 307. positioning protection frame; 308. snap-fit ​​rotating block; 309. first cone Gear; 310, second bevel gear; 311, first spring; 4, load-bearing ball transmission assembly; 401, fixed slide plate; 402, first ball guide plate; 403, positioning rotating column; 404, gear rotating block; 405, handle bar; 406, receiving rotating rod; 407, second ball guide plate; 408, connecting long rod; 409, second spring; 410, short linkage block; 411, long linkage block; 412, front gear block; 413, rear gear; 414, third spring; 5, pressure test assembly; 501, pressure protection plate; 502, built-in pressure measuring hydraulic rod. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1-Figure 2 As shown, a semi-trailer rollover test auxiliary platform proposed by the present invention comprises a test platform 1, a rollover pressure auxiliary component 2 is slidably installed inside the test platform 1, a load-bearing component 3 is installed on the top of the rollover pressure auxiliary component 2, two groups of load-bearing ball transmission components 4 are slidably installed on both sides of the inner wall of the test platform 1, and a pressure test component 5 is installed at the bottom of the test platform 1; The test platform 1 includes a platform outer frame 101 with a curved track on the bottom surface of one side. A semi-trailer test product transmission cavity 102 is provided inside the platform outer frame 101 to facilitate the semi-trailer test product to enter the semi-trailer test product transmission cavity 102 from the curved track for testing; The rollover pressure auxiliary component 2 includes a pressure conduction plate 201 attached to the top of the semi-trailer, conduction blocks 202 are fixedly installed on both sides of the pressure conduction plate 201, the pressure conduction plate 201 is bolted to the semi-trailer test product passed into the semi-trailer test product transmission cavity 102, two first threaded rods 203 are fixedly installed inside the platform outer frame 101, the outer sides of the two first threaded rods 203 are threadedly connected with an internal threaded plate 204, the internal threaded plate 204 is slidably installed inside the platform outer frame 101, an auxiliary rotating rod 205 is rotatably installed on one side of the internal threaded plate 204, the pressure conduction plate 201 is fixedly installed on the side of the auxiliary rotating rod 205 away from the internal threaded plate 204, a second forward and reverse motor is fixedly installed at the bottom of the two first threaded rods 203, and the second forward and reverse motor is fixedly installed at the bottom of the platform outer frame 101, the second forward and reverse motor drives the first threaded rod 203 to rotate, and as the first threaded rod 203 rotates, the internal threaded plate 204 moves up and down along the slideway of the platform outer frame 101. When the semi-trailer test product enters the semi-trailer test product transmission chamber 102, in the initial state, the pressure conduction plate 201 is attached to the bottom of the semi-trailer test product transmission chamber 102 to prevent the built-in threaded plate 204 from being damaged by supporting the pressure conduction plate 201 and other components for a long time as a support. As the semi-trailer test product is transported into the semi-trailer test product transmission chamber 102, the built-in threaded plate 204 and the pressure conduction plate 201 move upward according to the height of the semi-trailer test product until the pressure conduction plate 201 is attached to the bottom of the semi-trailer test product transmission chamber 102. On the semi-trailer test product, since different types of semi-trailer test products have different initial centers of gravity, the pressure conduction plate 201 is used to slide up and down, so that the equipment performs experimental detection according to the different initial centers of gravity of the semi-trailer test products, and the pressure conduction plate 201 can follow the semi-trailer test product to roll over and deflect through the auxiliary rotating rod 205, further simulating the rollover state, and the auxiliary rotating rod 205 and the internal threaded plate 204 are fixedly installed with an auxiliary spring used to restore the pressure conduction plate 201 to a horizontal state; like Figure 6-Figure 10As shown, the load-bearing component 3 includes two positioning and protection frames 307 slidably installed on both sides of the conduction block 202, and a positioning load-bearing plate 302 is fixedly installed on the side of the positioning and protection frame 307 facing the inner wall of the platform outer frame 101, and a snap-fitting rotating block 308 is hinged on one side of the positioning and protection frame 307 through a deflection component. The deflection component can be a drive such as a motor that actively causes the deflectable load-bearing plate 301 to actively deflect, and a deflectable load-bearing plate 301 is fixedly installed on one side of the snap-fitting rotating block 308. The deflectable load-bearing plate 301 and the positioning load-bearing plate 302 form a load-bearing ball wrapping ring, and the bottom of the deflectable load-bearing plate 301 and the positioning load-bearing plate 302 are fixedly installed with a placing frame plate 303, and a placing frame plate 303 is fixedly installed on the inner wall of the placing frame plate 303. A plurality of simulated arc hollow tubes 304 are installed, and the plurality of simulated arc hollow tubes 304 are arranged in an annular state with respect to the load-bearing ball wrapping ring. A positioning ball column 305 is slidably installed inside the simulated arc hollow tube 304, and a first spring 311 is fixedly installed between the simulated arc hollow tube 304 and the positioning ball column 305. During the rollover test, it is necessary to continuously adjust the distribution state of the cargo in the semi-trailer cargo box to achieve different cargo loading conditions, so as to comprehensively evaluate the performance and stability of the semi-trailer under different conditions. However, the adjustment process of the cargo stacking condition is time-consuming, which affects the efficiency of the entire rollover test process. Therefore, the load-bearing ball enters the corresponding load-bearing ball wrapping ring according to the conduction position of the load-bearing ball transmission component 4, and completes the rollover test. The simulation of different conditions of paired semi-trailer test products is carried out, and the introduced loading ball first enters under the wrapping of the positioning ball column 305 along the placing frame plate 303. Since the outer surface of the loading ball is circular, and multiple simulated arc hollow tubes 304 are distributed in a ring shape on the surface of the placing frame plate 303, and the placing frame plate 303 is perpendicular to the bottom of the positioning load-bearing plate 302, then multiple simulated arc hollow tubes 304 and the positioning ball column 305 form an arc that wraps the bottom of the loading ball. The positioning ball column 305 is tightly fastened to the surface of the loading ball by the elastic force of the first spring 311. During the test, the semi-trailer test product will roll over with the rollover pressure auxiliary component 2 and the load-bearing component 3. If the loading ball accidentally falls out, it is easy to cause the loading ball and the platform to fall out. The contact with the inner wall of the outer frame 101 causes damage to the equipment. At the same time, the accidental escape of the loading ball causes uneven force on the semi-trailer test product, making it impossible to simulate different conditions well. When the semi-trailer test product overturns to the specified position, the deflection assembly drives the deflectable load-bearing plate 301 to deflect along the positioning protection frame 307 through the snap-fitting rotating block 308. At this time, half of the positioning ball column 305 and the simulated arc hollow tube 304 no longer serve as components for clamping the loading ball. The other half of the positioning ball column 305 and the simulated arc hollow tube 304 use their own elastic force and the gravity of the loading ball to quickly escape the loading ball, thereby collecting and redistributing the loading ball, and then better reasonably allocating and testing the different conditions of the semi-trailer test product, thereby improving the efficiency of the test.

[0022] like Figure 6-Figure 9As shown, the load-bearing assembly 3 also includes a first forward and reverse motor 306 fixedly mounted on the top of the conduction block 202, the output shaft of the first forward and reverse motor 306 is fixedly mounted with a second bevel gear 310, two first bevel gears 309 are meshed and mounted on both sides of the second bevel gear 310, one side of the two first bevel gears 309 is fixedly mounted with the same number of snap-fitting rotating blocks 308, the two snap-fitting rotating blocks 308 are rotatably mounted on one side of the conduction block 202, the positioning protection frame 307 is threadedly mounted on the outside of the snap-fitting rotating blocks 308, the positioning protection frame 307 is slidably mounted on one side of the conduction block 202 through the thread conduction of the snap-fitting rotating blocks 308, the second bevel gear 310 is driven to rotate by the first forward and reverse motor 306, and the two first bevel gears 309 meshed with the second bevel gear 310 are set in opposite directions of rotation. In this case, the two snap-fitting rotating blocks 3 08 rotates in the opposite direction, causing the two positioning protection frames 307 to move toward or away from each other along the slide rail of the conduction block 202 using the threaded conduction between the positioning protection frames 307 and the snap-fitting rotating block 308, causing the two sets of deflectable load plates 301 and the positioning load plates 302 to be symmetrically distributed. If it is necessary to test the center of the semi-trailer test product, first, the load-bearing ball transmission component 4 transports the corresponding load-bearing ball to the positioning load plates 302 and the deflectable load plates 301. At this time, as the two snap-fitting rotating blocks 308 rotate, the two positioning protection frames 307 move toward each other. According to the sensing of the pressure test component 5, the specific state of the semi-trailer test product when the load-bearing ball moves toward the central area of ​​the semi-trailer test product can be understood, thereby understanding the rollover impact of the semi-trailer test product as the position changes when the weight on both sides is symmetrical, and then it is more convenient to obtain comparative data.

[0023] In this embodiment, Figure 1-Figure 5As shown, the load-bearing ball transmission component 4 includes two groups of load-bearing ball transmission component fixed slide plates 401 slidably installed on both sides of the platform outer frame 101, a first ball guide plate 402 is rotatably installed on one side of the load-bearing ball transmission component fixed slide plate 401, and a second ball guide plate 407 is rotatably installed in the middle of the load-bearing ball transmission component fixed slide plate 401, the number of the first ball guide plate 402 and the second ball guide plate 407 is two groups, and the two groups of first ball guide plates 402 and the second ball guide plates 407 are axially symmetrical about the vertical center line of the load-bearing ball transmission component fixed slide plate 401, and the two first ball guide plates 402 are each fixedly installed with a third forward and reverse motor on one side facing the inner wall of the platform outer frame 101, and at the same time, a hydraulic component for telescopic movement is fixedly installed on the bottom of the load-bearing ball transmission component fixed slide plate 401, so that the load-bearing ball transmission component fixed slide plate 401 can slide to the specified position according to the inner wall of the platform outer frame 101 to complete the corresponding operation. Then, the two first ball guide plates 402 and the second ball guide plates 407 located on the same load-bearing ball transmission type component fixed slide plate 401 rotate about the symmetry line without interfering with each other, a positioning rotating column 403 is fixedly installed on one side of the first ball guide plate 402, and a receiving rotating rod 406 is fixedly installed on the side of the second ball guide plate 407 facing the positioning rotating column 403, the receiving rotating rod 406 is rotatably installed inside the load-bearing ball transmission type component fixed slide plate 401, and a second spring 409 is fixedly installed at the connection between the receiving rotating rod 406 and the load-bearing ball transmission type component fixed slide plate 401, a front gear block 412 is fixedly installed on one side of the receiving rotating rod 406 passing through the load-bearing ball transmission type component fixed slide plate 401, a long linkage block 411 is fixedly installed on the side of the positioning rotating column 403 facing the front gear block 412, and the long linkage block 411 is adapted to the front gear block 412, and the load-bearing ball transmission type component fixed slide plate 401 has two states of position; The first state is the ball transmission state, at which the load ball transmission assembly fixed slide plate 401 is higher than the positioning load plate 302 and the deflectable load plate 301, so that the load ball transmission assembly 4 can transmit the corresponding load ball to the positioning load plate 302 and the deflectable load plate 301; The second state is the ball receiving state, at which time the fixed slide plate 401 of the load ball transmission assembly is lower than the positioning load plate 302 and the deflectable load plate 301. When the load assembly 3 deflects synchronously due to the rollover of the semi-trailer test product or the staff actively deflects the deflectable load plate 301 using the deflection assembly to cause the load ball to fall from the load assembly 3, the load ball transmission assembly 4 is used to prevent the load ball from falling and damaging the equipment and to locate and recover the load ball, thereby facilitating the rapid distribution of the load ball in the later stage. A rear gear 413 is slidably installed on one side of the receiving rotating rod 406 through a sliding groove, and a third spring 414 is fixedly installed at the connection between the rear gear 413 and the receiving rotating rod 406, and a short linkage block 410 adapted to the rear gear 413 is fixedly installed on one side of the positioning rotating column 403. A gear rotating block 404 is rotatably installed on one side of the load-bearing ball transmission type component fixed slide plate 401, and a handle bar 405 is fixedly installed on the bottom of the gear rotating block 404. A connecting long rod 408 is fixedly installed on one side of the handle bar 405, and the connecting long rod 408 is hinged on the bottom of the second ball guide plate 407. When the equipment needs to simulate the weight-bearing state of the semi-trailer test product, the four conditions are divided into four types, namely, the head, tail, middle and entire side of the semi-trailer test product. When in the pressure simulation at the head, tail and entire side, the two groups of the vertical center line of the load-bearing ball transmission type component fixed slide plate 401 are The third forward and reverse motor drives the positioning column 403 to rotate corresponding to the above three conditions, and the positioning column 403 drives the first ball guide plate 402 to rotate forward. The first ball guide plate 402 preferentially puts the load balls collected above into the positioning load plate 302 and the deflectable load plate 301. If the pressure line needs to be extended, the positioning column 403 continues to rotate. At this time, the positioning column 403 contacts the front gear block 412, and the front gear block 412 drives the receiving rod 406 to rotate. The receiving rod 406 mobilizes the second ball guide plate 407 to rotate along the fixed slide plate 401 of the load ball transmission assembly, and then the load balls stored in the second ball guide plate 407 are put below. The deflectable load plate 301 and the positioning load plate 302 slide along the rollover pressure auxiliary component 2 according to the corresponding load balls loaded on the head or tail or the entire side of the semi-trailer test product, thereby completing the simulation of the three conditions; If the middle part of the semi-trailer test product is simulated, the third forward and reverse motor drives the positioning rotating column 403 to reverse, at this time, the long linkage block 411 does not contact with the front gear block 412, and the first ball guide plate 402 contacts with the load ball in the reverse direction. The surface of the first ball guide plate 402 has anti-skid patterns, which prevent the load ball from falling out during the squeezing process between the first ball guide plate 402 and the load ball, and the short linkage block 410 follows the positioning rotating column 403 to contact with the rear gear 413, and the rear gear 413 first slides along the slide groove to the gear rotating block 404. Since there is a load ball on the second ball guide plate 407 at this time, its weight is relatively large, the rear gear 413 is When moving along the elastic force of the third spring 414, the receiving rotating rod 406 will not move with the rear gear 413, and the gear rotating block 404 is compressed and rotated to drive the handle rod 405 and the connecting long rod 408 to deflect together, until the second ball guide plate 407 is opened along the fixed slide plate 401 of the load-bearing ball transmission assembly, causing the load-bearing ball located in the middle to move to the positioning load-bearing plate 302 and the deflectable load-bearing plate 301 in the middle, thereby completing the simulation of the middle condition of the semi-trailer test product, and then relatively simply simulating various conditions of the semi-trailer test product, and the experimental efficiency is high, with high safety.

[0024] like Figure 5 As shown, the pressure test assembly 5 includes a pressure-bearing protective plate 501 hinged at the bottom of the semi-trailer test product transmission chamber 102, and a built-in pressure-measuring hydraulic rod 502 is hinged on the side wall of the pressure-bearing protective plate 501. The built-in pressure-measuring hydraulic rod 502 is fixedly installed at the bottom of the semi-trailer test product transmission chamber 102. When the semi-trailer test product changes the corresponding loading state on the load-bearing assembly 3 and rolls over, the corresponding semi-trailer test product rolls over and applies pressure to the side wall of the pressure-bearing protective plate 501. The pressure-bearing protective plate 501 contacts the pressure-bearing protective plate 501, causing the semi-trailer test product to roll over accidentally, causing damage to the inside of the equipment. At the same time, the pressure-bearing protective plate 501 is adjusted according to the pressure of the semi-trailer test product. The test product is deflected along the semi-trailer test product transmission chamber 102 due to the rollover pressure. At this time, the pressure-bearing protective plate 501 transmits the side wall pressure to the built-in pressure-measuring hydraulic rod 502. The built-in pressure-measuring hydraulic rod 502 records the corresponding transmission pressure through the pressure sensing component installed at the connection with the pressure-bearing protective plate 501, and supports the pressure-bearing protective plate 501 and the semi-trailer test product to improve safety, thereby providing data for the later manufacturing of the semi-trailer support component, thereby improving the quality of semi-trailer manufacturing. At the same time, a fourth spring for restoring the original position is fixedly installed at the connection between the pressure-bearing protective plate 501 and the semi-trailer test product transmission chamber 102; It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. "Comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0025] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A semitrailer rollover test auxiliary platform, comprising a test platform (1), characterized in that: A rollover pressure auxiliary component (2) is slidably mounted inside the test platform (1), a load-bearing component (3) is mounted on the top of the rollover pressure auxiliary component (2), two groups of load-bearing ball transmission components (4) are slidably mounted on both sides of the inner wall of the test platform (1), and a pressure test component (5) is mounted on the bottom of the test platform (1); The test platform (1) comprises a platform outer frame (101) whose bottom surface on one side is an arc-shaped track, and a semi-trailer test article transmission cavity (102) is provided inside the platform outer frame (101); The rollover pressure auxiliary assembly (2) comprises a pressure conduction plate (201) attached to the top of the semi-trailer, and conduction blocks (202) are fixedly mounted on both sides of the pressure conduction plate (201); The load-bearing assembly (3) comprises two positioning and protection frames (307) slidably mounted on both sides of the conduction block (202); a positioning load-bearing plate (302) is fixedly mounted on one side of the positioning and protection frame (307) facing the inner wall of the platform outer frame (101); a snap-fitting rotating block (308) is hingedly mounted on one side of the positioning and protection frame (307) via a deflection assembly; a deflectable load-bearing plate (301) is fixedly mounted on one side of the snap-fitting rotating block (308); the deflectable load-bearing plate (301) and the positioning load-bearing plate (302) form a load-bearing ball package. The deflectable load-bearing plate (301) and the positioning load-bearing plate (302) are both fixedly mounted with a placement frame plate (303) at their bottoms, a plurality of simulated arc hollow tubes (304) are fixedly mounted on the inner wall of the placement frame plate (303), the plurality of simulated arc hollow tubes (304) are arranged in a ring state with respect to the load-bearing ball wrapping ring, a positioning ball column (305) is slidably mounted inside the simulated arc hollow tube (304), and a first spring (311) is fixedly mounted between the simulated arc hollow tube (304) and the positioning ball column (305).

2. A semitrailer rollover test auxiliary platform according to claim 1, characterized in that: Two first threaded rods (203) are fixedly installed inside the platform outer frame (101); the outer sides of the two first threaded rods (203) are threadedly connected to an internal threaded plate (204); the internal threaded plate (204) is slidably installed inside the platform outer frame (101); an auxiliary rotating rod (205) is rotatably installed on one side of the internal threaded plate (204); and the pressure conduction plate (201) is fixedly installed on a side of the auxiliary rotating rod (205) away from the internal threaded plate (204).

3. A semitrailer rollover test auxiliary platform according to claim 2, characterized in that: The load-bearing assembly (3) further comprises a first forward and reverse motor (306) fixedly mounted on the top of the conduction block (202), and a second bevel gear (310) is fixedly mounted on the output shaft of the first forward and reverse motor (306).

4. A semitrailer rollover test auxiliary platform according to claim 3, characterized in that: Two first bevel gears (309) are meshedly mounted on both sides of the second bevel gear (310), and the same number of snap-fit ​​rotating blocks (308) are fixedly mounted on one side of the two first bevel gears (309), and the two snap-fit ​​rotating blocks (308) are rotatably mounted on one side of the conduction block (202).

5. A semitrailer rollover test auxiliary platform according to claim 4, characterized in that: The positioning protection frame (307) is threadedly mounted on the outside of the snap-fit ​​rotating block (308), and the positioning protection frame (307) is slidably mounted on one side of the conduction block (202) through the thread conduction of the snap-fit ​​rotating block (308).

6. The semitrailer rollover test auxiliary platform according to claim 1, characterized in that: The load-bearing ball transmission type assembly (4) comprises two sets of load-bearing ball transmission type assembly fixed slide plates (401) slidably mounted on both sides of the platform outer frame (101); a first ball guide plate (402) is rotatably mounted on one side of the load-bearing ball transmission type assembly fixed slide plate (401); and a second ball guide plate (407) is rotatably mounted on the middle part of the load-bearing ball transmission type assembly fixed slide plate (401).

7. A semitrailer rollover test auxiliary platform according to claim 6, characterized in that: A positioning rotating column (403) is fixedly mounted on one side of the first ball guide plate (402), and a receiving rotating rod (406) is fixedly mounted on the side of the second ball guide plate (407) facing the positioning rotating column (403).

8. The semitrailer rollover test auxiliary platform according to claim 7, characterized in that: The receiving type rotating rod (406) is rotatably mounted inside the load-bearing ball transmission type component fixed slide plate (401), and a second spring (409) is fixedly mounted at the connection between the receiving type rotating rod (406) and the load-bearing ball transmission type component fixed slide plate (401), a front gear block (412) is fixedly mounted on one side of the receiving type rotating rod (406) passing through the load-bearing ball transmission type component fixed slide plate (401), and a long linkage block (411) is fixedly mounted on the side of the positioning rotating column (403) facing the front gear block (412), and the long linkage block (411) is adapted to the front gear block (412).

9. The semitrailer rollover test auxiliary platform according to claim 8, characterized in that: A rear gear (413) is slidably mounted on one side of the receiving rotating rod (406) through a sliding groove, and a third spring (414) is fixedly mounted at the connection between the rear gear (413) and the receiving rotating rod (406); a short linkage block (410) adapted to the rear gear (413) is fixedly mounted on one side of the positioning rotating column (403); a gear rotating block (404) is rotatably mounted on one side of the fixed slide plate (401) of the load-bearing ball transmission assembly; a handle bar (405) is fixedly mounted on the bottom of the gear rotating block (404); a connecting long rod (408) is fixedly mounted on one side of the handle bar (405); and the connecting long rod (408) is hinged to the bottom of the second ball guide plate (407).

10. The semitrailer rollover test auxiliary platform according to claim 1, characterized in that: The pressure test assembly (5) comprises a pressure-bearing protection plate (501) hinged to the bottom of a test article transmission chamber (102) of a semi-trailer, a built-in pressure-measuring hydraulic rod (502) hinged to a side wall of the pressure-bearing protection plate (501), and the built-in pressure-measuring hydraulic rod (502) is fixedly mounted to the bottom of the test article transmission chamber (102) of the semi-trailer.

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