Double-trailer train stability test system

Abstract

The invention discloses a stability testing system for a double-trailer train, and relates to the technical field of trailer stability testing. The test racks are arranged in the test bed at intervals along the longitudinal direction and are arranged in the test bed in a transverse moving manner; the roll shafts are rotationally arranged on the test rack, and the plurality of roll shafts are in transmission connection through transmission parts; the driving part is arranged on the test rack and is in transmission connection with the roll shaft; and the telescopic component is arranged in the test bench and is hinged with the bottom of the test rack. According to the invention, the movable test rack is arranged on the test bench, the roll shafts are arranged on the test rack, and the transverse movement of the plurality of groups of roll shafts is realized through the telescoping of the telescopic part, so that the stability of the double-trailer train is tested; meanwhile, the annular air ring is arranged on the roller shaft, so that the stability test of tire run-out of the double-trailer train is simulated. The test system is suitable for stability bench tests of double-trailer trains with different lengths and tire numbers, and is high in applicability.

Description

Technical Field

[0001] This invention relates to the field of trailer stability testing technology, specifically a stability testing system for dual-trailer truck trains. Background Technology

[0002] Double-trailer truck trains originated in Europe in the 1970s. European and American countries have accumulated rich experience in promoting double-trailer truck trains, particularly in regulatory development, technical standards, and safety supervision. Double-trailer truck trains have become an indispensable part of the road transport system in Europe and America, widely used in long-distance transport and container transport. In China, due to multiple factors such as regulations, road conditions, and vehicle technology, the development of double-trailer truck trains started later. Currently, some pilot cities in China allow the operation of double-trailer truck trains. Compared with traditional road transport, double-trailer truck trains reduce transportation costs by approximately 30% and carbon emissions by 40%, achieving a dual improvement in economic and environmental benefits.

[0003] With the rapid development of the logistics industry and the increasing demand for efficient and environmentally friendly transportation methods, the development of double-trailer truck trains has received attention. Pilot operations of double-trailer truck trains have been launched across the country, and many pilot cities require the pilot vehicles to have compliant test reports issued by national-level testing institutions. Research on double-trailer truck trains will undoubtedly fill the gap in the capabilities of the Changchun Inspection Center and bring economic benefits.

[0004] Due to their large size and heavy load, double-trailer truck trains, currently permitted in pilot areas with a maximum load of 73 tons, pose a high risk during handling and stability tests. Currently, there are no established testing methods for double-trailer truck trains in the industry. Inconsistent turning and swaying of the front and rear vehicles in articulated truck trains, as well as uncoordinated swaying during train movement, all affect the safety of double-trailer truck trains. Therefore, this application proposes a stability testing system for double-trailer truck trains. Summary of the Invention

[0005] This invention provides a stability testing system for dual-trailer truck trains, aiming to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides a stability testing system for dual-trailer truck trains, comprising: Test bench; The test rack is arranged longitudinally at intervals within the test bench and can be moved laterally within the test bench. The rollers are rotatably mounted on the test frame, and multiple rollers are connected by a transmission component to enable them to rotate synchronously on the test frame. The drive unit is mounted on the test frame and is connected to the roller shaft drive. The telescopic component is located inside the test bench and is hinged to the bottom of the test frame; The telescopic component moves laterally to push the test frame, thereby moving the rollers laterally to perform stability tests on the double-trailer truck train on it.

[0007] Specifically, there are multiple test benches, each with at least one set of test frames arranged horizontally. Each set of test frames has at least four rotating rollers (corresponding to single-wheel tires) and at most twelve rotating rollers (corresponding to three-wheel tires). It also includes a longitudinal track set underground. The test benches move on the longitudinal track through the traveling mechanism on it to adjust the distance between two adjacent test benches to match the test requirements of double-trailer truck trains with different lengths of attachments.

[0008] Specifically, the traveling mechanism includes a traveling motor and a moving frame. The moving frame is slidably mounted on the longitudinal track and is fixedly connected to the front end and / or rear end of the test bench. A drive roller is rotatably mounted on the moving frame. The drive roller makes rolling contact with the longitudinal track. The traveling motor is connected to the shaft of the drive roller through a gearbox to drive the test bench to move within the longitudinal track.

[0009] Specifically, there are 3 to 6 test benches, which are initially located at one end of the longitudinal track. During use, the test benches are moved on the longitudinal track by a traveling mechanism to adjust their spacing.

[0010] Preferably, the test bench is equipped with a slide rail, and the bottom of the test frame is equipped with movable rollers that rotate within the slide rail. It also includes a movable support frame connected to both sides of the test frame, with its bottom rotating on the slide rail via movable rollers.

[0011] Preferably, two adjacent rollers arranged in the transverse direction are coaxially connected by a drive shaft; two adjacent rollers arranged in the longitudinal direction are connected by a transmission component; the transmission component is a transmission belt or a transmission chain, and a transmission wheel or transmission sprocket is provided at the end of the roller and on the transmission shaft.

[0012] Preferably, there is at least one set of driving components, which are drive motors, and the output end of the drive motors is connected to the roller shaft via a gearbox. The telescopic component is a hydraulic cylinder or an electric cylinder.

[0013] Preferably, at least one annular groove is formed on at least one roller shaft, and a rotating component is rotatably connected within the annular groove. An annular gas ring is disposed within the rotating component, and the annular gas ring is connected to an air pump via a pipeline to inflate the annular gas ring. A two-position three-way solenoid valve is provided on each pipeline connecting to the annular gas ring to inflate or deflate the annular gas ring.

[0014] Specifically, the annular groove on each roller can be set synchronously in the middle or on one side of the middle.

[0015] Specifically, the annular grooves between every two rollers spaced longitudinally can be staggered longitudinally.

[0016] Preferably, a limiting plate is connected to the annular component, and a limiting rod is slidably mounted on the limiting plate. A bouncing rubber block is connected to the upper end of the limiting rod. A spring is sleeved on the limiting rod, and the annular gas ring expands by inflation to push the limiting rod to stretch the spring, thereby pushing the bouncing rubber block out of the annular groove. The limiting plate consists of multiple pieces, evenly distributed along the circumference of the annular component, so that multiple bouncing rubber blocks can extend out of the annular groove in multiple directions.

[0017] Compared with existing technologies, it has the following beneficial effects: This invention tests the stability of a double-trailer truck train by setting up a movable test frame on a test bench, and installing rollers on the test frame. The stability is achieved by the lateral movement of multiple sets of rollers through the extension and retraction of telescopic components. Simultaneously, annular air rings are installed on the rollers to simulate the tire bounce stability test of the double-trailer truck train. This testing system is suitable for bench testing the stability of double-trailer truck trains of various lengths and numbers of tires, demonstrating strong applicability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a stability testing system for a double-trailer truck train according to the present invention; Figure 2 This is a schematic diagram of the test bench and test rack of the present invention; Figure 3 This is a schematic diagram of the working process of the testing system of the present invention; Figure 4 This is a schematic diagram of the test bench of the present invention; Figure 5 This is a schematic diagram of the roller and test frame of the present invention; Figure 6 This is a schematic diagram of the telescopic component and test frame of the present invention; Figure 7 This is a schematic diagram of the rolling support of the two wheels of the present invention; Figure 8 This is a schematic diagram of the rollers of the three wheels of the present invention; Figure 9 This is a schematic diagram of the annular groove and annular air ring of the present invention; Figure 10 This is a schematic diagram of the annular groove of the present invention; Figure 11 This is a schematic diagram of the rotating component and the annular gas ring of the present invention; Figure 12 This is a schematic diagram of the annular gas ring of the present invention; Figure 13 This is a schematic diagram showing the annular gas ring of the present invention positioned at different locations; Figure 14 This is a schematic diagram of the bouncing rubber block of the present invention.

[0020] Figure reference numerals: 1-Test bench; 11-Slide rail; 2-Test frame; 21-Moving support frame; 22-Moving rollers; 3-Roller; 31-Drive shaft; 32-Annular groove; 4-Drive components; 5-Telescopic components; 6-Transmission components; 7-Longitudinal track; 8-Propelling mechanism; 9-Rotating component; 10-Annular air ring; 101-Pipeline; 102-Limiting plate; 103-Limiting rod; 104-Impacting rubber block; 105-Spring. Detailed Implementation

[0021] To better understand the structure, functional features, and advantages of the present invention, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings: Example 1: like Figures 1 to 8 As shown, the present invention provides a stability testing system for a double-trailer truck train, comprising: Test bench 1; The test rack 2 is arranged longitudinally at intervals within the test bench 1 and is also moved laterally within the test bench 1; Roller 3 is rotatably mounted on test frame 2. Multiple rollers 3 are connected by transmission component 6 so that multiple rollers 3 rotate synchronously on test frame 2. The drive component 4 is mounted on the test frame 2 and is connected to the roller shaft 3 for transmission. Telescopic component 5 is located inside the test bench 1 and is hinged to the bottom of the test frame 2; The telescopic component 5 pushes the test frame 2 to move laterally through telescopic movement, thereby driving the roller 3 to move laterally to conduct stability tests on the double-trailer truck train on it.

[0022] Specifically, see Figure 2 and Figure 5The test bench 1 is equipped with a slide rail 11, and the bottom of the test frame 2 is equipped with movable rollers 22. The movable rollers 22 are rotatably mounted in the slide rail 11 so that the telescopic component 5 can drive the test frame 2 to move within the slide rail 11 through telescopic movement. Furthermore, each test frame 2 is equipped with at least four rollers 3 in the transverse direction.

[0023] See Figure 2 It also includes a movable support frame 21, which is fixedly connected to both sides of the test frame 2. The bottom of the movable support frame 21 is rolled on the slide rail 11 by movable rollers 22 so as to move together with the test frame 2. This can effectively prevent the double trailer train from falling to the test frame 2 after it moves away from the roller 3.

[0024] Specifically, see Figure 2 The test bench 1 consists of multiple test benches, each of which has at least one set of test frames 2 arranged laterally. Each set of test frames 2 has at least four rollers 3 rotatably arranged to correspond to a single-wheel tire, and at most twelve rollers 3 rotatably arranged to correspond to a three-wheel tire. The test bench 1 also includes a longitudinal track 7 set underground. The test bench 1 moves on the longitudinal track 7 through a traveling mechanism 8 to adjust the distance between two adjacent test benches 1 to match the test requirements of double-trailer truck trains with different lengths of attachment.

[0025] Specifically, see Figure 3 There are 3 to 6 test benches. In the initial state, they are located at one end of the longitudinal track 7. When in use, the test benches 1 are moved on the longitudinal track 7 by the traveling mechanism 8 to adjust their spacing.

[0026] Specifically, the traveling mechanism 8 includes a traveling motor and a moving frame. The moving frame is slidably mounted on the longitudinal track 7 and connected to the front and / or rear end of the test bench 1. Drive rollers are rotatably mounted on the moving frame, and these drive rollers roll in contact with the longitudinal track 7. The traveling motor is connected to the shaft of the drive rollers via a gearbox to drive the test bench 1 to move within the longitudinal track 7, thereby adjusting the spacing between multiple test benches 1 to conduct stability tests on double-trailer truck trains of different lengths.

[0027] Specifically, see Figure 6 and Figure 8 Two adjacent rollers 3 arranged in the transverse direction are coaxially connected by a transmission shaft 31; two adjacent rollers 3 arranged in the longitudinal direction are connected by a transmission component 6; the transmission component 6 is a transmission belt or transmission chain, and a transmission wheel or transmission sprocket is provided at the end of the roller 3 and on the transmission shaft 31 so that the roller 3 can rotate synchronously through the transmission wheel or transmission sprocket.

[0028] Specifically, see Figure 5The drive component 4 is at least one set, and the drive component 4 is a drive motor. The output end of the drive motor is connected to the roller shaft 3 through a gearbox. The drive motor drives the gearbox to rotate the roller shaft 3, and through the transmission component 6, multiple roller shafts 3 rotate synchronously, thereby realizing that the roller shaft 3 acts synchronously on multiple tires.

[0029] See Figure 6 The telescopic component 5 is a hydraulic cylinder or an electric cylinder, which is used to push the test frame 2 to move laterally.

[0030] Example 2: As another embodiment of the present invention, such as Figures 9 to 12 As shown, in conjunction with the technical solution of Embodiment 1, at least one annular groove 32 is provided on at least one roller shaft 3 in this embodiment. A rotating component 9 is rotatably connected to the annular groove 32 via a bearing. An annular air ring 10 is provided inside the rotating component 9. The annular air ring 10 is connected to an air pump via a pipe 101 to inflate the annular air ring 10. A two-position three-way solenoid valve is provided on each pipe 101 connected to the annular air ring 10 to inflate and deflate the annular air ring 10. When it is necessary to simulate tire bouncing or bumping, the annular air ring 10 is inflated by the air pump to expand and contact the rotating tire. When it is necessary to deflate the annular air ring 10, the exhaust port is opened through the two-position three-way solenoid valve to release air. Further, the annular air ring 10 is located in the annular groove 32 in the normal state and has the same diameter as the outer ring of the roller shaft 3. When inflated, its diameter is larger than the outer ring of the roller shaft 3. Furthermore, the top of the rotating part 9 is provided with multiple reinforcing plates along the circumference. The reinforcing plates have an arc-shaped structure and the same diameter as the outer ring of the roller 3, so that the annular air ring 10 extends out from the gap between the multiple reinforcing plates and contacts the tire after being inflated.

[0031] Specifically, see Figure 13 The annular groove 32 on each roller 3 can be simultaneously set in the middle or on one side of the middle, so that different rollers 3 and test frames 2 can be selected as needed for different tires during testing. The test frame 2 of the present invention provides rolling support for single, double or triple wheels of a double-trailer truck by setting multiple sets and combining different numbers of rollers 3.

[0032] Specifically, the annular grooves 32 between every two rollers 3 spaced along the longitudinal direction can be staggered along the longitudinal direction to simulate the bouncing or bumping of the tires at different positions.

[0033] Example 3: As another embodiment of the present invention, such as Figure 14As shown, in conjunction with the technical solution of Embodiment 2, a limiting plate 102 is connected to the annular part, and a limiting rod 103 is slidably provided on the limiting plate 102. A bouncing rubber block 104 is connected to the upper end of the limiting rod 103. A spring 105 is sleeved on the limiting rod 103. The annular air ring 10 expands by inflating to push the limiting rod 103 to stretch the spring 105, thereby pushing the bouncing rubber block 104 out of the annular groove 32, so that the rotating tire will bump or bounce after contacting it, to simulate the state of road bumps.

[0034] Furthermore, the limiting plate 102 consists of multiple pieces, which are evenly distributed along the circumference of the annular part, so that multiple bouncing rubber blocks 104 can extend out of the annular groove 32 in multiple directions, so that the bouncing rubber blocks 104 extending in multiple directions can contact the rotating tire, so that the tire is in a bouncing or bumping state, in order to test its stability.

[0035] Working principle of this invention: See Figure 3 Before testing, the double-trailer truck train to be tested is driven onto a platform consisting of multiple test benches 1. The front wheels of the double-trailer truck train are positioned on the rollers 3 of the foremost test bench 1, and the front of the double-trailer truck train is fixed to the foremost test bench 1 using a fixing frame or a traction frame. When the traveling mechanism 8 drives the foremost test bench 1 to move, it can move the double-trailer truck train forward together until the front wheels of the first row of double-trailer truck train enter the rollers 3 of the next test bench 1, so that the tires on the train roll into rolling contact with the rollers 3 on the next test bench 1. Then, the foremost test bench 1 and the next test bench 1 move together under the drive of the traveling mechanism 8, so that the double-trailer truck train moves forward until the rear wheels of the first row of double-trailer truck train enter the rollers 3 on the third test bench 1. By moving the double-trailer truck train in sequence, the tires at different positions on the train enter different test benches 1, thereby achieving the adjustment of the spacing between multiple test benches 1 to match the stability test of double-trailer truck trains of different lengths.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. A stability testing system for a double-trailer truck train, characterized in that, include: Test bench (1); The test rack (2) is arranged longitudinally at intervals within the test bench (1) and is also moved laterally within the test bench (1); Roller shafts (3) are rotatably mounted on the test frame (2). Multiple roller shafts (3) are connected by transmission components (6) so that multiple roller shafts (3) rotate synchronously on the test frame (2). The driving component (4) is mounted on the test frame (2) and is connected to the roller shaft (3) for transmission. The telescopic component (5) is located inside the test bench (1) and is hinged to the bottom of the test frame (2); The telescopic component (5) pushes the test frame (2) to move laterally through telescopic movement, thereby driving the roller (3) to move laterally to perform stability testing on the double trailer train on it.

2. The stability testing system for double-trailer truck trains according to claim 1, characterized in that, The test bench (1) is equipped with a slide rail (11), and the test frame (2) is equipped with a movable roller (22) at the bottom. The movable roller (22) is rotatably mounted in the slide rail (11).

3. The stability testing system for double-trailer truck trains according to claim 1, characterized in that, Two adjacent rollers (3) arranged in the transverse direction are coaxially connected by a transmission shaft (31); two adjacent rollers (3) arranged in the longitudinal direction are connected by a transmission component (6); the transmission component (6) is a transmission belt or a transmission chain, and a transmission wheel or transmission sprocket is provided on the end of the roller (3) and the transmission shaft (31).

4. The stability testing system for double-trailer truck trains according to claim 1, characterized in that, The driving component (4) is at least one set, the driving component (4) is a driving motor, and the output end of the driving motor is connected to the roller shaft (3) through a gearbox; the telescopic component (5) is a hydraulic cylinder or an electric cylinder.

5. The stability testing system for double-trailer truck trains according to claim 1, characterized in that, The test bench (1) is multiple, and each test bench (1) is horizontally provided with at least one set of test frames (2). Each set of test frames (2) is rotatably provided with at least four rollers (3) and at most twelve rollers (3). It also includes a longitudinal track (7) set underground. The test bench (1) moves on the longitudinal track (7) through the traveling mechanism (8) on it to adjust the distance between two adjacent test benches (1) to match the test requirements of double trailer truck trains with different lengths of attachment.

6. The stability testing system for double-trailer truck trains according to any one of claims 1 to 5, characterized in that, The traveling mechanism (8) includes a traveling motor and a moving frame. The moving frame is slidably disposed on the longitudinal track (7) and fixedly connected to the front end and / or rear end of the test bench (1). A drive roller is rotatably disposed on the moving frame. The drive roller is in rolling contact with the longitudinal track (7). The traveling motor is connected to the shaft of the drive roller through a gearbox to drive the test bench (1) to move within the longitudinal track (7).

7. The stability testing system for double-trailer truck trains according to any one of claims 1 to 6, characterized in that, At least one of the roller shafts (3) is provided with at least one annular groove (32), and a rotating part (9) is rotatably connected in the annular groove (32). An annular air ring (10) is provided in the rotating part (9). An air ring (10) is connected to an air pump through a pipe (101) to inflate the annular air ring (10). A two-position three-way solenoid valve is provided on each pipe (101) connected to the annular air ring (10) to inflate or deflate the annular air ring (10).

8. The stability testing system for double-trailer truck trains according to claim 6, characterized in that, A limiting plate (102) is connected to the annular component. A limiting rod (103) is slidably provided on the limiting plate (102). A bouncing rubber block (104) is connected to the upper end of the limiting rod (103). A spring (105) is sleeved on the limiting rod (103). The annular air ring (10) expands by inflating to push the limiting rod (103) to stretch the spring (105), thereby pushing the bouncing rubber block (104) out of the annular groove (32).

9. The stability testing system for double-trailer truck trains according to claim 8, characterized in that, The limiting plate (102) consists of multiple pieces and is evenly distributed along the circumference of the annular part so that multiple bouncing rubber blocks (104) can extend out of the annular groove (32) in multiple directions.

10. The stability testing system for double-trailer truck trains according to claim 2, characterized in that, It also includes a movable support frame (21), which is connected to both sides of the test frame (2), and the bottom of the movable support frame (21) is rolled on the slide rail (11) by the movable roller (22).

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