Device for testing strength of front wall and rear wall of carriage body

Abstract

The utility model relates to the technical field of carriage body strength test, and particularly discloses a carriage body front and rear wall strength test device, which solves the technical problem that the existing carriage body front and rear wall strength test device cannot meet the strength test requirements of carriages of various sizes, and comprises an aluminum alloy combined rack, an aluminum profile laminated plate is arranged on one side of the aluminum alloy combined rack and is formed by splicing a plurality of unit pieces, universal wheels are connected to the lower portion of the aluminum alloy combined rack, a loading rod is connected to the other side of the aluminum alloy combined rack, the other end of the loading rod is connected with a jacking frame, one side of the jacking frame is connected with a chain, and the chain is connected with the loading rod. According to the utility model, through the arrangement of the loop bar and the plurality of positive and negative tooth screws, the use lengths of the jacking assembly, the support rod assembly and the support rod jacking block can be respectively adjusted, the air bag and the unit piece are provided with various specifications, and the unit piece adopts a detachable and combined structure, so that the test requirements of compartments with different sizes and specifications can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of carriage strength testing, in particular to a vehicle carriage front and rear wall strength testing device. Background Art

[0002] Vehicles with a body are vehicles with special purposes. They need to comply with relevant regulations and standards during manufacturing and use. Many countries and regions have formulated regulations on the structure and performance of the body, including requirements for the strength of the front and rear walls of the body. The front and rear walls of the body are the main load-bearing structures of the body and bear various pressures during transportation. Strength tests on the front and rear walls of the body can ensure that they are strong enough to withstand various external loads and internal pressures, thereby ensuring the structural safety of the body.

[0003] However, the existing vehicle body front and rear wall strength test device manufactures a frame that matches the size of the vehicle body, places air bags between the frame and the front and rear walls of the vehicle body, and applies force to the vehicle body through the air bags, thereby detecting the load that the front and rear walls of the vehicle body can withstand. However, due to the inconsistent body sizes of different vehicles, a single vehicle body front and rear wall strength test device cannot meet the strength test requirements of vehicles of various sizes. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a vehicle compartment front and rear wall strength testing device, which can solve the problem that the prior vehicle compartment front and rear wall strength testing device cannot meet the strength testing needs of vehicles of various sizes. It can not only meet the strength testing needs of vehicles of various sizes, but also simulate the road vibration and impact of stacked objects in the actual transportation process, so as to more comprehensively evaluate the mechanical strength of the vehicle compartment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vehicle body front and rear wall strength testing device, comprising an aluminum alloy combined stand, an aluminum profile laminated plate is arranged on one side of the aluminum alloy combined stand, the aluminum profile laminated plate is formed by splicing a plurality of unit components, a universal wheel is connected to the bottom of the aluminum alloy combined stand, a loading rod is connected to the other side of the aluminum alloy combined stand, the other end of the loading rod is connected to a tightening frame, a chain is connected to one side of the tightening frame, tightening assemblies are respectively arranged on both sides of the tightening frame, a support rod assembly is connected to one side of the tightening frame, a support rod tightening block is connected to the other end of the support rod assembly, an air bag is arranged on one side of the aluminum profile laminated plate, and a hole is opened on the outer surface of the air bag.

[0006] Through the above technical scheme, when the strength test is carried out on the front and rear walls of the car body, the airbag will expand after being inflated, and apply a test force to the car body and the aluminum profile laminate plate. The test force is transmitted to the loading rod through the aluminum profile laminate plate. The pressure sensor connected in the middle of the loading rod monitors the current loading force in real time. The loading force value is displayed through the instrument box. By detecting the loading force, the load size that the front and rear walls of the car body can withstand can be detected.

[0007] Furthermore, a pressure sensor is installed in the middle of the loading rod, and adjustable screws are connected to both ends of the loading rod.

[0008] Through the above technical solution, when performing longitudinal measurement and transverse measurement, the length of the loading rod can be changed by adjusting the adjustable screw, so that loading rods of different lengths correspond to test of carriage bodies of different sizes. The length of the loading rod meets the requirement of 1500-2600mm, and the loading force can be monitored in real time through the pressure sensor, which is beneficial to improve the test accuracy of the device.

[0009] Furthermore, a first positive and negative thread screw is arranged inside the tightening component, and a plurality of the tightening components are arranged, and the tightening components are symmetrically distributed about the longitudinal center line of the tightening frame.

[0010] Through the above technical solution, the length of the tightening assembly can be changed by adjusting the first forward and reverse thread screw, so that the tightening assembly is stably connected to the left and right side walls of the carriage body, thereby supporting the tightening frame.

[0011] Furthermore, a universal ball head and a second forward and reverse threaded screw are respectively provided at both ends of the support rod assembly. The universal ball head is located at the connecting end between the support rod assembly and the tightening frame, and the second forward and reverse threaded screw is located at the connecting end between the support rod assembly and the support rod tightening block.

[0012] Through the above technical solution, the setting of the universal ball head can adjust the support rod assembly to any angle, and the length of the support rod assembly can be changed by adjusting the second forward and reverse thread screw, thereby meeting the usage requirements of different scenarios.

[0013] Furthermore, a sleeve rod is arranged inside the support rod tightening block, and a third positive and negative thread screw is arranged inside the sleeve rod.

[0014] Through the above technical solution, the mutual cooperation between the sleeve rod and the third positive and negative thread screw rod is conducive to expanding the adjustable range of the use length of the support rod tightening block.

[0015] Furthermore, a simulation component is arranged inside the aluminum alloy combination stand, and the simulation component includes a simulation block and a knocking rod. A fixed block is arranged on one side of the simulation block, and an elastic band is connected to one side of the fixed block. The elastic band and the knocking rod are connected to each other. A card slot is provided on the outer surface of the fixed block, and the end of the knocking rod is a spherical structure.

[0016] Through the above technical solution, after pulling the knocking rod, the knocking rod will drive the elastic belt to stretch. After releasing the knocking rod, the elastic belt will drive the knocking rod to hit the simulation block. After the simulation block is hit, it will apply a test force to the car body, thereby simulating the road vibration and impact of stacked objects in the actual transportation process, so as to more comprehensively evaluate the mechanical strength of the car body.

[0017] Furthermore, an installation component is provided inside the simulation block, and the installation component includes a support shaft, a connecting rod and a support block. A groove and a limit groove are opened inside the simulation block, and the groove and the limit groove are connected to each other. The outer surface of the support shaft is fixedly connected to the limit block, and the limit block is slidably connected to the limit groove. The connecting rod is sleeved on the outer surface of the support shaft, and the support block is fixedly connected to the connecting rod. The support block has an inverted "L" shape structure, and the support blocks are symmetrically distributed about the longitudinal center line of the connecting rod.

[0018] Through the above technical solution, the simulation blocks can be installed at different positions of the aluminum alloy combined stand using the installation components, so as to simulate the mechanical strength of different positions of the compartment when subjected to vibration and impact.

[0019] Furthermore, a storage groove is provided on the upper surface of the simulation block, and the height of the storage groove is greater than the height of the support block.

[0020] Through the above technical solution, the support block can be stored inside the storage groove, so as to facilitate the movement of the simulation block inside the aluminum alloy combination stand for position adjustment.

[0021] Compared with the prior art, the utility model provides a vehicle compartment body front and rear wall strength test device, which has the following beneficial effects:

[0022] In the utility model, by setting a sleeve rod and a plurality of positive and negative threaded screws, the use lengths of the tightening assembly, the support rod assembly and the support rod tightening block can be adjusted respectively, so that the device can meet the test requirements of compartments of different sizes, and the airbags and unit elements are provided with a variety of specifications, and the unit elements adopt a detachable and modular structure, which is suitable for compartments of different sizes.

[0023] The simulation components can provide impact forces at different positions, thereby applying impact test forces to the car body, thereby simulating road vibrations and impacts of stacked objects during actual transportation, so as to more comprehensively evaluate the mechanical strength of the car body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the connection structure of the aluminum alloy combined stand and the aluminum profile laminate plate in the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the air bag in the utility model;

[0027] Figure 4 It is a structural schematic diagram of the tightening frame in the utility model;

[0028] Figure 5 It is a structural schematic diagram of the tightening assembly in the utility model;

[0029] Figure 6 It is a structural schematic diagram of the support rod assembly in the utility model.

[0030] Figure 7 This is a structural schematic diagram of the support rod tightening block in the utility model;

[0031] Figure 8 It is a structural schematic diagram of a unit component in the utility model;

[0032] Fig. 9 It is a structural schematic diagram of the loading rod in the utility model;

[0033] Fig.10 This is a schematic diagram of the connection structure between the simulation component and the aluminum alloy combined stand in the utility model;

[0034] Fig.11 It is a schematic diagram of the structure of the simulation component in the utility model;

[0035] Fig.12 It is a cross-sectional structural schematic diagram of the simulation component in the utility model;

[0036] Fig.13 It is a structural schematic diagram of the striking rod in the utility model.

[0037] Among them: 1. Aluminum alloy combined stand; 2. Aluminum profile laminated plate; 3. Single element; 4. Universal wheel; 5. Loading rod; 6. Pressure sensor; 7. Adjustable screw; 8. Clamping frame; 9. Clamping assembly; 10. First positive and negative thread screw; 11. Support rod assembly; 12. Universal ball head; 13. Second positive and negative thread screw; 14. Support rod clamping block; 15. Sleeve rod; 16. Third positive and negative thread screw; 17. Air bag; 18. Belt hole; 19. Chain; 20. Simulation block; 21. Groove; 22. Limiting groove; 23. Support shaft; 24. Limiting block; 25. Storage groove; 26. Connecting rod; 27. Support block; 28. Slot; 29. ​​Fixed block; 30. Elastic band; 31. Percussion rod. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0039] See also Figure 1-Figure 4 The utility model provides a technical solution: a vehicle body front and rear wall strength test device, comprising an aluminum alloy combined stand 1, an aluminum profile laminate plate 2 is arranged on one side of the aluminum alloy combined stand 1, the aluminum profile laminate plate 2 is spliced ​​by a plurality of unit components 3, a universal wheel 4 is connected to the bottom of the aluminum alloy combined stand 1, a loading rod 5 is connected to the other side of the aluminum alloy combined stand 1, the other end of the loading rod 5 is connected to a tightening frame 8, a chain 19 is connected to one side of the tightening frame 8, tightening assemblies 9 are respectively arranged on both sides of the tightening frame 8, a support rod assembly 11 is connected to one side of the tightening frame 8, a support rod tightening block 14 is connected to the other end of the support rod assembly 11, an air bag 17 is arranged on one side of the aluminum profile laminate plate 2, and a hole 18 is opened on the outer surface of the air bag 17.

[0040] It is worth mentioning that: the airbag 17 is provided with a variety of specifications (the height of the airbag 17 is provided with four specifications of 1.6m, 1.85m, 2.0m, and 2.28m, and the airbags 17 of these four specifications of height correspond to five specifications of width, specifically 1.5m, 1.8m, 2.0m, 2.4m, and 3.0m), and each airbag 17 should be able to withstand the specified pressure and have a large safety margin. After the airbag 17 is inflated, it has the ability to extend at least 500mm in the loading direction, and the height of the airbag 17 should be not less than 0.75 times the inner height of the front wall of the compartment and not less than 1600mm. When the inner height of the front, side, and rear walls of the compartment is less than 1600mm, it should be not less than the inner height of the front wall of the compartment. In addition, the unit 3 is provided There are various specifications (width 1400mm×height 1600mm, width 2000mm×height 2000mm, width 2000mm×height 280mm). When the car height is less than or equal to 2000mm, the single element 3 with width 1400×height 1600 is used for testing. When the car height is greater than 2000mm and less than 2650mm, the single element 3 with width 2000×height 3 and the top tightening component 9 are directly used for testing. When the car height is greater than 2650mm and less than 2950mm, the single element 3 with width 2000mm×height 3 and the single element 3 with width 2000mm×height 3 are directly used for splicing and heightening to form a single element 3 with width 2000×height 2280 and a combination of a single element 3 with width 2000×height and a top tightening component 9 are used for testing.

[0041] The principle of being able to test the strength of the front and rear walls of the carriage body is as follows: the measuring system of the device includes a controller, a force sensor, an amplifier, a laser distance sensor and its accessories. When conducting a strength test on the front and rear walls of the carriage body, the device is first assembled according to the positional relationship of the above-mentioned components, and the air bag 17 is stably connected to the aluminum profile laminate plate 2 by passing the drawstring through the hole 18 opened on the outer surface of the air bag 17, and the number of sensors for this test is determined, and the instrument box and the sensors are connected according to the corresponding numbers. Next, turn on the power switch on the instrument box, and the system starts working, and the display shows The initial screen is displayed, which is the sum of the values ​​measured by each sensor. Then, the airbag 17 is inflated, the airbag 17 will expand, and a test force will be applied to the car body and the aluminum laminate plate 2. When the test force is reached, the equipment alarms and stops inflating. The test force is transmitted to the loading rod 5 through the aluminum laminate plate 2. The pressure sensor 6 connected in the middle of the loading rod 5 monitors the current loading force in real time. The loading force value is displayed on the instrument box. At this time, the screen can be switched as needed to detect the total force value and each channel force value of the current system. The value can intuitively display the load that the front and rear walls of the car body can withstand.

[0042] See also Fig. 9 A pressure sensor 6 is installed in the middle of the loading rod 5, and adjustable screws 7 are connected to both ends of the loading rod 5.

[0043] It is worth mentioning that: when performing longitudinal and transverse measurements, the length of the loading rod 5 can be changed by adjusting the adjustable screw 7, so that loading rods 5 of different lengths correspond to tests on carriage bodies of different sizes. The length of the loading rod 5 meets the requirement of 1500-2600mm, and the loading force can be monitored in real time through the pressure sensor 6, which is beneficial to improving the test accuracy of the device.

[0044] See also Figure 5-Figure 8 A first positive and negative thread screw 10 is arranged inside the tightening component 9, and multiple tightening components 9 are arranged, and the tightening components 9 are symmetrically distributed about the longitudinal center line of the tightening frame 8. Universal ball heads 12 and second positive and negative thread screws 13 are arranged at both ends of the support rod component 11, respectively. The universal ball head 12 is located at the connecting end of the support rod component 11 and the tightening frame 8, and the second positive and negative thread screw 13 is located at the connecting end of the support rod component 11 and the support rod tightening block 14. A sleeve rod 15 is arranged inside the support rod tightening block 14, and a third positive and negative thread screw 16 is arranged inside the sleeve rod 15.

[0045] It should be noted that: by setting the sleeve rod 15 and multiple positive and negative thread screws, the use lengths of the clamping assembly 9, the support rod assembly 11 and the support rod clamping block 14 can be adjusted respectively, so that the device can meet the test requirements of compartments of different sizes. Example

[0046] The difference between this embodiment and embodiment 1 is that, please refer to Figure 10-13 A simulation component is arranged inside the aluminum alloy combined stand 1, and the simulation component includes a simulation block 20 and a knocking rod 31. A fixed block 29 is arranged on one side of the simulation block 20, and an elastic band 30 is connected to one side of the fixed block 29. The elastic band 30 and the knocking rod 31 are connected to each other. A card slot 28 is provided on the outer surface of the fixed block 29, and the end of the knocking rod 31 is a spherical structure.

[0047] The principle of simulating impact and vibration is: after pulling the knocking rod 31 out from the slot 28, pulling the knocking rod 31 will cause the elastic belt 30 to stretch; after releasing the knocking rod 31, the elastic belt 30 will drive the knocking rod 31 to hit the simulation block 20; after the simulation block 20 is hit, it will apply a test force to the car body, thereby simulating the road vibration and the impact of stacked objects in the actual transportation process, so as to more comprehensively evaluate the mechanical strength of the car body.

[0048] See also Figure 11-Figure 12 The simulation block 20 is provided with mounting components inside, and the mounting components include a support shaft 23, a connecting rod 26 and a support block 27. A groove 21 and a limit groove 22 are opened inside the simulation block 20, and the groove 21 and the limit groove 22 are connected to each other. The outer surface of the support shaft 23 is fixedly connected to the limit block 24, and the limit block 24 is slidably connected to the limit groove 22. The connecting rod 26 is sleeved on the outer surface of the support shaft 23, and the support block 27 is fixedly connected to the connecting rod 26. The support block 27 is an inverted "L"-shaped structure, and the support blocks 27 are symmetrically distributed about the longitudinal center line of the connecting rod 26. A storage groove 25 is opened on the upper surface of the simulation block 20, and the height of the storage groove 25 is greater than the height of the support block 27.

[0049] The principle of being able to adjust the connection position of the simulation block 20 and the aluminum alloy combination stand 1 is: first, rotate the connecting rod 26 90°, and push the support shaft 23 downward, so that the support block 27 connected to the connecting rod 26 is stored in the inside of the storage groove 25, then move the simulation block 20 to a suitable position, and then pull the support shaft 23 upward, and the limit block 24 and the limit groove 22 guide the lifting and lowering of the support shaft 23. After the connecting rod 26 and the support block 27 extend from the inside of the storage groove 25, rotate the connecting rod 26 90° in the opposite direction, so that the support block 27 is stuck in the inside of the aluminum alloy combination stand 1, so as to adjust the connection position of the simulation block 20 and the aluminum alloy combination stand 1.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle compartment front and rear wall strength test device, comprising an aluminum alloy combined stand (1), characterized in that: An aluminum profile laminated plate (2) is arranged on one side of the aluminum alloy combined platform (1), and the aluminum profile laminated plate (2) is formed by splicing a plurality of unit components (3). A universal wheel (4) is connected to the bottom of the aluminum alloy combined platform (1). A loading rod (5) is connected to the other side of the aluminum alloy combined platform (1). The other end of the loading rod (5) is connected to a tightening frame (8). A chain (19) is connected to one side of the tightening frame (8). Tightening assemblies (9) are arranged on both sides of the tightening frame (8). A support rod assembly (11) is connected to one side of the tightening frame (8). A support rod tightening block (14) is connected to the other end of the support rod assembly (11). An air bag (17) is arranged on one side of the aluminum profile laminated plate (2), and a hole (18) is provided on the outer surface of the air bag (17).

2. A vehicle compartment front and rear wall strength testing device according to claim 1, characterized in that: A pressure sensor (6) is installed in the middle of the loading rod (5), and adjustable screw rods (7) are connected to both ends of the loading rod (5).

3. A vehicle compartment front and rear wall strength testing device according to claim 1, characterized in that: A first forward and reverse threaded screw (10) is arranged inside the tightening component (9), a plurality of the tightening components (9) are arranged, and the tightening components (9) are symmetrically distributed about the longitudinal center line of the tightening frame (8).

4. A vehicle compartment front and rear wall strength testing device according to claim 1, characterized in that: The two ends of the support rod assembly (11) are respectively provided with a universal ball head (12) and a second forward and reverse threaded screw (13); the universal ball head (12) is located at the connection end between the support rod assembly (11) and the tightening frame (8); and the second forward and reverse threaded screw (13) is located at the connection end between the support rod assembly (11) and the support rod tightening block (14).

5. A vehicle compartment front and rear wall strength testing device according to claim 1, characterized in that: A sleeve rod (15) is arranged inside the support rod tightening block (14), and a third positive and negative thread screw (16) is arranged inside the sleeve rod (15).

6. A vehicle compartment front and rear wall strength testing device according to claim 1, characterized in that: A simulation component is arranged inside the aluminum alloy combined stand (1), and the simulation component comprises a simulation block (20) and a knocking rod (31); a fixing block (29) is arranged on one side of the simulation block (20); an elastic band (30) is connected to one side of the fixing block (29); the elastic band (30) and the knocking rod (31) are connected to each other; a slot (28) is provided on the outer surface of the fixing block (29); and the end of the knocking rod (31) is in a spherical structure.

7. A vehicle compartment front and rear wall strength testing device according to claim 6, characterized in that: The simulation block (20) is provided with a mounting component inside, the mounting component comprising a support shaft (23), a connecting rod (26) and a support block (27); a groove (21) and a limit groove (22) are provided inside the simulation block (20); the groove (21) and the limit groove (22) are connected to each other; the outer surface of the support shaft (23) is fixedly connected to a limit block (24); the limit block (24) is slidably connected to the limit groove (22); the connecting rod (26) is sleeved on the outer surface of the support shaft (23); the support block (27) is fixedly connected to the connecting rod (26); the support block (27) is in an inverted "L"-shaped structure; the support blocks (27) are symmetrically distributed about the longitudinal center line of the connecting rod (26).

8. A vehicle compartment front and rear wall strength testing device according to claim 7, characterized in that: The upper surface of the simulation block (20) is provided with a receiving groove (25), and the height of the receiving groove (25) is greater than the height of the supporting block (27).

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