A damping device and dynamic rollover test system

Abstract

The present invention provides a damping device and a dynamic rollover test system, the device comprising: a base plate, at least one damping unit being arranged on the base plate, each damping unit comprising a traction rope and a first column group and a second column group being symmetrically arranged along a preset symmetry axis; the traction rope comprising a first force-applying part and a second force-applying part located at both ends and a traction part located in the middle; the free ends of the first force-applying part and the second force-applying part are respectively used for being fixedly connected to an external fixed object, and the traction part is used for pulling an object to be decelerated; wherein: the first force-applying part is installed in cooperation with the first column group, and the second force-applying part is installed in cooperation with the second column group, the first force-applying part and the second force-applying part respectively pass through at least one column gap formed by adjacent columns in the corresponding column group, and the first force-applying part and the second force-applying part are symmetrically arranged along the preset symmetry axis.

Description

Technical Field

[0001] The present invention relates to the field of braking, and in particular to a damping device and a dynamic rollover test system. Background Art

[0002] The resistance applied by existing damping devices to the object to be decelerated is fixed. If one wants to change the applied resistance, one needs to make significant adjustments to the structure of the damping device, or directly replace the damping device with a different resistance, which brings great inconvenience to users of the damping device. Summary of the Invention

[0003] In view of this, the present invention provides a damping device and a dynamic rollover test system to address the deficiencies in the related art.

[0004] Specifically, the present invention is achieved through the following technical solutions:

[0005] According to a first aspect of the present invention, there is provided a damping device, comprising:

[0006] A base plate, wherein at least one damping unit is provided on the base plate, each damping unit comprising a traction rope and a first column group and a second column group symmetrically arranged along a preset symmetry axis;

[0007] The traction rope includes a first force-applying portion and a second force-applying portion at both ends and a traction portion in the middle; the free ends of the first force-applying portion and the second force-applying portion are respectively used to be fixedly connected to an external fixed object, and the traction portion is used to pull the object to be decelerated; wherein:

[0008] The first force-applying portion is installed in cooperation with the first column group, and the second force-applying portion is installed in cooperation with the second column group. The first force-applying portion and the second force-applying portion respectively pass through at least one column gap formed by adjacent columns in the corresponding column group, and the first force-applying portion and the second force-applying portion are symmetrically arranged along the preset symmetry axis.

[0009] According to a second aspect of the present invention, a dynamic rollover test system is provided, comprising: a vehicle-carrying platform and a damping device as described in the first aspect; wherein:

[0010] The vehicle carrying platform is used to carry the experimental vehicle and move it toward the damping device at a constant speed;

[0011] The damping device is used to block the vehicle carrying platform and decelerate the vehicle carrying platform to a stop at a preset acceleration value.

[0012] The technical solutions provided by the embodiments of the present invention may have the following beneficial effects:

[0013] In an embodiment of the present invention, a damping device is provided, which includes at least one damping unit. Each damping unit includes a traction rope and a first column group and a second column group symmetrically arranged along a preset symmetry axis. The traction rope includes a first force-applying portion and a second force-applying portion located at both ends, and a traction portion located in the middle. The traction portion is used to pull the object to be decelerated, the first force-applying portion is installed in conjunction with the first column group, and the second force-applying portion is installed in conjunction with the second column group. The first force-applying portion and the second force-applying portion respectively pass through at least one column gap formed by adjacent columns in the corresponding column group. Users of the damping device can change the resistance applied by the damping device to the object to be decelerated in a variety of ways, including: changing the number of column gaps through which the traction rope passes, changing the column gaps through which it passes, or a combination of the above methods. Users can achieve changes in resistance without having to replace the damping device, thereby greatly reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0015] Figure 1 1 is a structural schematic diagram of a damping device shown in an embodiment disclosed in the present invention;

[0016] Figure 2a is a structural schematic diagram of another damping device shown in an embodiment disclosed in the present invention;

[0017] Figure 2b is a structural schematic diagram of another damping device shown in an embodiment disclosed in the present invention;

[0018] Figure 3 This is a schematic structural diagram of a damping device with a greater number of columns, shown in an embodiment disclosed in the present invention;

[0019] Figure 4a is a schematic diagram of a movable column in a first position shown in an embodiment disclosed in the present invention;

[0020] Figure 4b is a schematic diagram of a movable column in a second position shown in an embodiment disclosed in the present invention;

[0021] Figure 5 This is a schematic structural diagram of a detachable column shown in an embodiment disclosed in the present invention;

[0022] Figure 6is a schematic diagram showing a comparison of detachable columns of different diameters shown in an embodiment of the present invention;

[0023] Figure 7 is a schematic diagram of a traction rope bent upward, shown in an embodiment of the present invention;

[0024] Figure 8 It is a schematic diagram of an existing dynamic rollover experiment in the related art;

[0025] Figure 9 is a system architecture diagram of a dynamic rollover test system shown in an embodiment of the present invention;

[0026] Figure 10 The figure is a flow chart of a dynamic rollover experiment marking method shown in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present invention.

[0028] The terms used in this invention are for the purpose of describing specific embodiments only and are not intended to limit the invention. The singular forms "a," "the," and "the" used in this invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0029] It should be understood that although the terms "first," "second," "third," etc. may be used in the present invention to describe various information, such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. Depending on the context, the term "if" as used herein may be interpreted as "when," "when," or "in response to determining."

[0030] An embodiment of the dynamic display method for preventing motion sickness of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Figure 1 FIG. 1 is a schematic structural diagram of a damping device according to an embodiment of the present invention. Figure 1As shown, the damping device includes a base plate 101, on which two damping units (damping unit 102, damping unit 103) are arranged, each damping unit includes a traction rope and a first column group 104 and a second column group 105 symmetrically arranged along a preset symmetry axis 109; the traction rope includes a first force-applying part 106 and a second force-applying part 107 located at both ends and a traction part 108 located in the middle; the free ends of the first force-applying part 106 and the second force-applying part 107 are respectively used to be fixedly connected to an external fixed object 115, and the traction part is used to pull the object to be decelerated; wherein: the first force-applying part 106 is installed in conjunction with the first column group 104, and the second force-applying part 107 is installed in conjunction with the second column group 105, the first force-applying part 106 and the second force-applying part 107 respectively pass through at least one column gap formed by adjacent columns in the corresponding column group, and the first force-applying part 106 and the second force-applying part 107 are symmetrically arranged along the preset symmetry axis 109.

[0032] Figure 1 The first column group in the embodiment includes three columns, which form two column gaps, and the first force-applying portion passes through the two column gaps respectively. Figure 1 The number of times the first force applying part and the second force applying part of the damping device pass through the gap between the columns causes the resistance applied by the traction part to the object to be decelerated to change. Figure 2a As shown, the first column group in the damping device includes three columns: column 201, column 202, and column 203. A column gap exists between column 201 and column 202, and another column gap exists between column 202 and column 203. The first force-applying portion only passes through the column gap between column 202 and column 203, and does not pass through the column gap between column 201 and column 202. At this point, column 201 does not apply resistance to the first force-applying portion, so the resistance applied to the object to be decelerated by the traction portion connected to the first force-applying portion is also reduced.

[0033] In addition to changing the number of column gaps through which the traction rope passes, changing the column gaps through which the traction rope passes also affects the resistance applied by the damping device to the object to be decelerated. Figure 2b As shown, Figure 2b The first force applying part only passes through a column gap, which is formed by the column 201 and the column 202. Figure 2a When the force is applied through the gap between the pillars 202 and 203, the moment between the force-applying portion and the pillars changes, and the applied resistance also changes accordingly.

[0034] Of course, this specification does not limit the number of columns in the first column group and the second column group. When the number of columns in the column group is large, the column gaps formed are also large, and the resistance change of the traction part will also increase. Figure 3 As shown, the first column group of the damping device includes four columns, namely column 301, column 302, column 303, and column 304. Three column gaps are formed between the four columns. The first force-applying part passes through the three column gaps in sequence. Figure 2a compared to, Figure 3 The more gaps between the pillars passed through, the greater the resistance applied to the first force-applying part, and the greater the resistance applied by the traction part to the object to be decelerated.

[0035] Figure 1 The embodiments provide a damping device that allows users to change the resistance applied to an object to be decelerated in a variety of ways, including by varying the number of column gaps through which the traction rope passes, varying the column gaps through which the traction rope passes, or a combination of these methods. Users can change the resistance without having to replace the damping device, significantly reducing operating costs.

[0036] The resistance can be changed in more ways than just this, and can also be achieved by adjusting the structure of the damping device. For example, changing the distance between a pair of columns arranged along the axis of symmetry, or changing the diameter of the columns, can both affect the resistance.

[0037] In one embodiment, the first column group and the second column group include movable columns, and the movable columns can slide along the sliding grooves provided on the base plate to change the distance between a pair of movable columns symmetrically provided along the preset symmetry axis.

[0038] The following combination Figure 4a 、 4b This embodiment will be described in detail. Figure 4a This is a schematic diagram of a movable column in the first position according to an embodiment of the present invention. In the damping unit, columns 401 and 402 are symmetrically arranged along a preset symmetry axis, and columns 401 and 402 are arranged on a slide 403. Columns 401 and 402 can move along the slide 403. At this time, column 401 is parallel to the other columns in the first column group, and column 402 is also parallel to the other columns in the second column group. For the convenience of explanation, Figure 4a The positions of the middle column 401 and the column 402 are determined as the first position. Move the column 401 and the column 402 along the slide 403 to Figure 4bIn the position shown (the second position), at this time, the column 401 is farther away from the preset symmetry axis relative to the other columns in the first column group, and the column 402 is also farther away from the preset symmetry axis relative to the other columns in the second column group, which results in a larger bending angle formed when the first force-applying part and the second force-applying part pass through the gap between the columns, thereby increasing the resistance applied by the column to the force-applying part, and driving the resistance applied by the traction part to the object to be decelerated to also increase.

[0039] Of course, the movable column is not limited to the chute. For example, holes can be provided on the bottom plate for the column to be placed. When the distance between the columns needs to be changed, the column can be pulled out and inserted into another hole. This specification does not limit this.

[0040] In addition to moving the columns, the distance between the columns can also be changed by changing the diameter of the columns.

[0041] In one embodiment, the first column group and the second column group include at least one pair of detachable columns symmetrically arranged along the preset symmetry axis, and the detachable columns include a fixed portion fixed to the base plate and a detachable matching portion, the matching portion is used to match the first force-applying portion or the second force-applying portion, and the fixed portion can be detachably assembled with a plurality of matching portions of different diameters.

[0042] The following combination Figure 5 Describe the removable columns in detail. Figure 5 This is a schematic diagram of the structure of a detachable column according to an embodiment of the present invention. The schematic diagram includes a mating portion 501, a fixing portion 502, and a detachable column 503. Below the mating portion is a groove whose shape and dimensions match those of the fixing portion 502. The fixing portion 502 can be directly inserted into the groove of the mating portion 501, forming the detachable column 503. The fixing portion 502 is fixedly mounted to the base plate, and a single fixing portion can be detachably assembled with multiple mating portions of different diameters.

[0043] In this embodiment, the connection between the fixing portion and the matching portion may be through threaded connection, joint connection, or chemical connection such as glue, and this specification does not limit this.

[0044] like Figure 6 As shown, Figure 6This is a schematic diagram illustrating a comparison of detachable columns of different diameters, shown in an embodiment disclosed herein. In damping unit 601, each column has the same diameter. Columns 603 and 604 form a pair of detachable columns arranged along a preset axis of symmetry of damping unit 601. Replacing the mating portions of columns 603 and 604 with mating portions of larger diameters yields the result shown in damping unit 602. In damping unit 602, the mating portions of columns 605 and 606 are significantly larger than those of other columns in the same column group. This results in a greater degree of curvature of the force-applying portion of damping unit 602 than in damping unit 601, and consequently, a greater resistance applied to the object to be decelerated by damping unit 602 than by damping unit 601.

[0045] In this embodiment, the diameter of the pillars is changed so that the distance between a pair of pillars arranged along the symmetry axis is changed, thereby changing the resistance applied by the damping device to the object to be decelerated.

[0046] In addition to adjusting the setting of the columns, the number of traction ropes can also be adjusted.

[0047] In one embodiment, the first force applying portion is detachably mounted in cooperation with the first column group, and the second force applying portion is detachably mounted in cooperation with the second column group.

[0048] by Figure 1 For example, Figure 1 The middle damping device has only one traction rope. Since the first and second force-applying parts are detachably mounted relative to the column assembly, if resistance needs to be increased, more traction ropes can be added to the original one at the same location. If resistance needs to be reduced, the number of front extensions can be reduced.

[0049] In one embodiment, the bottom plate is further provided with reinforcing ribs, and the reinforcing ribs are used to reinforce and fix any one column in the first column group and the second column group.

[0050] like Figure 1 As shown, the arrangement of the reinforcement ribs can be varied. The reinforcement rib 110 only strengthens and fixes one column, while the reinforcement rib 111 strengthens and fixes both columns belonging to different damping units. Of course, the arrangement of the reinforcement ribs is not limited to the above two methods. The arrangement of the reinforcement ribs can also be considered based on the magnitude of the applied force. For example, reinforcement ribs can be set for columns with large resistance, and reinforcement ribs can be omitted for columns with small force. Figure 2a That is, reinforcing ribs are provided for columns 202 and 203, but no reinforcing ribs are provided for column 201. This specification does not limit the manner in which the reinforcing ribs are provided.

[0051] In one embodiment, the device further includes a base plate positioning portion, and the base plate positioning portion is used to fix the base plate to the target ground area.

[0052] The target ground area is the ground area where the object to be decelerated needs to be decelerated.

[0053] Combine Figure 1 To explain, such as Figure 1 As shown, the bottom plate positioning portion 112 is located at the upper right corner of the bottom plate 101 , and a bottom plate positioning portion is also provided at the other three corners of the bottom plate 101 . The four bottom plate fixing portions fix the bottom plate 101 to the target ground area.

[0054] In one embodiment, the device further includes a pressing plate, which is fixedly mounted on the bottom plate, and the first force applying portion and the second force applying portion pass through a gap between the pressing plate and the bottom plate.

[0055] Combine Figure 1 To explain, such as Figure 1 As shown, a pressure plate 113 is provided at one end near the traction portion of the traction rope, and a pressure plate 114 is provided at one end near a fixed object 115. The traction rope passes through the gap between the pressure plates 113 and 114 and the base plate. The two base plates cooperate with each other to confine the traction rope to the gap position, preventing the traction rope from escaping from the damping device during the traction process. This embodiment provides a pressure plate that can constrain the traction rope and ensure that the traction rope does not escaping from the damping device during the traction process.

[0056] In one embodiment, a connection between the pulling portion and any one of the force-applying portions is bent upward, so that the height of the pulling portion is higher than the first column group and the second column group.

[0057] In actual scenarios, the traction part often needs to cover a part of the object to be decelerated in order to achieve traction on the object to be decelerated, so the height of the traction part needs to be higher than the first column group and the second column group. Figure 7 This embodiment will be described. Figure 7 FIG. 1 is a schematic diagram showing an embodiment of the present invention in which a traction portion is bent upward. Figure 7 As shown, there is a bending point at the connection between the traction part and the first force applying part and the second force applying part, so that the traction part bends upward.

[0058] Specifically, the material of the traction rope may have memory properties, so that the traction rope maintains its bent state after being bent.

[0059] The damping device can be used in dynamic rollover tests to replace real road conditions. Currently, there are two main types of dynamic rollover tests: sand pit rollover test and road shoulder rollover test. Figure 8This is a schematic diagram of an existing dynamic rollover experiment in the related art, such as Figure 8 As shown in the figure, both the sand pit rollover test and the road shoulder rollover test are carried out in a real road environment. By placing the experimental vehicle on a vehicle-carrying platform and controlling the vehicle-carrying platform to move at a constant speed, before reaching the sand pit or the road shoulder, the vehicle-carrying platform hits a fixed object, causing the experimental vehicle on the platform to continue to roll forward into the sand pit due to inertia or be blocked by the road shoulder to roll over. Since both experiments are based on real road conditions, when changing the deceleration of the experimental vehicle, the road environment needs to be modified, which greatly increases the complexity of the operation. In addition, the characteristics of the sand will also affect the consistency of the experimental data and reduce the accuracy of the experiment.

[0060] The above-mentioned damping device can be used to simulate the real road conditions in the dynamic rollover test, so that the deceleration of the vehicle-carrying platform can be changed without changing the real road conditions, thereby reducing the complexity of the operation, saving experimental costs and improving the accuracy of the experiment.

[0061] Figure 9 This is a system architecture diagram of a dynamic rollover test system shown in the embodiment disclosed in the present invention. Figure 9 As shown, the system architecture includes a vehicle-carrying platform 901, a damping device 902, a test vehicle 903, a shoulder block 904, a vehicle recovery block 905, a vehicle recovery rope 906, and a hook 907. The damping device 902 can be any of the damping devices mentioned in the previous embodiments. The vehicle-carrying platform 901 is used to carry the test vehicle 903 and move it at a constant speed toward the damping device 902. The damping device 902 is used to block the vehicle-carrying platform 901 and decelerate it to a stop at a preset acceleration value.

[0062] Specifically, a hook 907 may be provided on the vehicle carrying platform 901. The hook 907 is sleeved on the traction part of the damping device 902 during movement. The traction part of the damping device 902 applies resistance to the vehicle carrying platform 901, causing it to slow down and stop.

[0063] In one embodiment, the vehicle-carrying platform is provided with a vehicle positioning device, which is used to position the experimental vehicle so that the axle of the experimental vehicle is parallel to the track of the vehicle-carrying platform moving at a constant speed, and the center of the experimental vehicle coincides with the centerline of the track of the vehicle-carrying platform moving at a constant speed. This embodiment uses the vehicle positioning device to make the axle of the experimental vehicle parallel to the track of the vehicle-carrying platform moving at a constant speed, and the center of the experimental vehicle coincides with the centerline of the track of the vehicle-carrying platform moving at a constant speed, thereby avoiding uneven force on the vehicle-carrying platform and the experimental vehicle during the experiment, thereby ensuring the accuracy of the experiment.

[0064] In one embodiment, the system further includes: a shoulder, which is installed on the side of the vehicle carrying platform close to the moving direction and is in close contact with the experimental vehicle, and is used to make rigid contact with the experimental vehicle during the deceleration process of the vehicle carrying platform to cause the experimental vehicle to roll over.

[0065] The purpose of setting up the shoulder barrier is to simulate the resistance of the shoulder to the test vehicle in the shoulder rollover test. Figure 9 Since the shoulder block 904 and the experimental vehicle 903 are in close contact, during the deceleration of the vehicle loading platform 901, the experimental vehicle 903 will hit the shoulder block 904 due to inertia. The rigid contact of the shoulder block 904 on the experimental vehicle 903 will cause the experimental vehicle 903 to roll over.

[0066] Furthermore, the system also includes: a vehicle recovery block, which is fixedly installed on the shoulder to limit the rollover of the experimental vehicle that has overturned.

[0067] When the experimental vehicle 903 rolls over, the vehicle recovery block 905 provided on the shoulder 904 will limit the reverse position of the rolled over experimental vehicle 903, ensuring that the experimental vehicle 903 is not damaged without affecting the rollover.

[0068] In one embodiment, the system further includes: a vehicle recovery rope, wherein both ends of the vehicle recovery rope are respectively connected to the experimental vehicle and the vehicle loading platform, and is used to limit the rollover of the experimental vehicle that has overturned.

[0069] Combine Figure 9 After the experimental vehicle 903 flips to a certain angle and loses its center of gravity, it will roll over. The vehicle recovery rope 906 will pull the experimental vehicle 903 back without affecting the rollover process, thus limiting the rollover of the experimental vehicle. To prevent the vehicle recovery rope 906 from affecting the rollover of the experimental vehicle, the length of the vehicle recovery rope 906 can be calculated based on the maximum deviation angle of the experimental vehicle 903.

[0070] This embodiment can recover the experimental vehicle during a dynamic rollover experiment, thereby preventing the experimental vehicle from being damaged due to rollover and saving experimental costs.

[0071] Since the critical deceleration of the experimental vehicle rollover is unknown, it is necessary to determine the structure of the damping device under the three states of the experimental vehicle rollover, non-rollover, and rollover critical before the dynamic rollover test.

[0072] Figure 10 This is a flow chart of a dynamic rollover experiment marking method shown in an embodiment of the present invention. Figure 10 As shown, the method comprises at least the following steps:

[0073] Step 1001, repeatedly controlling the movement toward the damping device at a uniform speed.

[0074] Step 1002: Adjust the structure of the damping device so that the vehicle loading platform slows down to a standstill at different deceleration rates. This can be achieved by changing the number of force-applying parts passing through the gaps between the columns, changing the number of traction ropes, or increasing the number of damping units in the damping device, as mentioned above. This, in turn, changes the damping applied by the damping device to the vehicle loading platform, allowing the vehicle loading platform to slow down to a standstill at different deceleration rates.

[0075] Step 1003: Record the structure of the damping device based on the rollover condition of the test vehicle during deceleration. Step 1004: If the test vehicle rolls over, determine that the structure of the damping device is a first structure when the test vehicle rolls over; if the test vehicle does not roll over, determine that the structure of the damping device is a second structure when the test vehicle does not roll over; and if the test vehicle is in a critical state of rollover during deceleration, determine that the structure of the damping device is a third structure when the test vehicle is in a critical state of rollover.

[0076] Step 1005: Determine whether the first, second, and third structures are all determined. If all three structures are determined, the process ends; if not, the process returns to step 1001.

[0077] This embodiment provides a dynamic rollover test marking method. Before the dynamic rollover test, the structure of the damping device in three situations is determined: the vehicle rolls over, does not roll over, and is critical to rollover. This reduces the number of dynamic rollover tests and saves a lot of resources.

[0078] Although the present invention includes many specific implementation details, these should not be interpreted as limiting the scope of any invention or the scope of protection claimed, but are mainly used to describe the features of the specific embodiments of a particular invention. Certain features described in multiple embodiments of the present invention may also be implemented in combination in a single embodiment. On the other hand, the various features described in a single embodiment may also be implemented separately in multiple embodiments or in any suitable sub-combination. In addition, although features may work in certain combinations as described above and even initially claimed as such, one or more features from the claimed combination may be removed from the combination in some cases, and the claimed combination may point to a sub-combination or a variation of the sub-combination.

[0079] Similarly, although operations are depicted in a particular order in the accompanying drawings, this should not be understood as requiring that these operations be performed in the particular order shown or performed sequentially, or that all illustrated operations be performed to achieve the desired results. In some cases, multitasking and parallel processing may be advantageous. In addition, the separation of various system modules and components in the above-described embodiments should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product, or packaged into multiple software products.

[0080] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the particular order shown or sequential sequence to achieve the desired results. In some implementations, multitasking and parallel processing may be advantageous.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A damping device, characterized in that: The device comprises: A base plate, wherein at least one damping unit is provided on the base plate, each damping unit comprising a traction rope and a first column group and a second column group symmetrically arranged along a preset symmetry axis; The traction rope includes a first force-applying portion and a second force-applying portion at both ends and a traction portion in the middle; the free ends of the first force-applying portion and the second force-applying portion are respectively used to be fixedly connected to an external fixed object, and the traction portion is used to pull the object to be decelerated; wherein: The first force-applying portion is installed in cooperation with the first column group, and the second force-applying portion is installed in cooperation with the second column group. The first force-applying portion and the second force-applying portion respectively pass through at least one column gap formed by adjacent columns in the corresponding column group, and the first force-applying portion and the second force-applying portion are symmetrically arranged along the preset symmetry axis; the first column group and the second column group include movable columns, and the movable columns can slide along the sliding grooves provided on the bottom plate to change the distance between a pair of movable columns symmetrically arranged along the preset symmetry axis.

2. The device according to claim 1, characterized in that The first column group and the second column group include at least one pair of detachable columns symmetrically arranged along the preset symmetry axis, and the detachable columns include a fixed portion fixed to the base plate and a detachable matching portion, the matching portion is used to match the first force-applying portion or the second force-applying portion, and the fixed portion can be detachably assembled with multiple matching portions of different diameters.

3. The device according to claim 1, characterized in that The first force applying portion is detachably mounted in cooperation with the first column group, and the second force applying portion is detachably mounted in cooperation with the second column group.

4. The device according to claim 1, characterized in that The bottom plate is further provided with reinforcing ribs, which are used to reinforce and fix any one column in the first column group and the second column group.

5. The device according to claim 1, characterized in that The device further comprises a bottom plate positioning portion, which is used to fix the bottom plate in a target ground area.

6. The device according to claim 1, characterized in that The device further includes a pressing plate fixedly mounted on the bottom plate, and the first force applying portion and the second force applying portion pass through a gap between the pressing plate and the bottom plate.

7. The device according to claim 1, characterized in that A connection between the pulling portion and any one of the force-applying portions is bent upward, so that the pulling portion is higher than the first column group and the second column group.

8. A dynamic rollover test system, characterized in that: The system comprises: a vehicle-carrying platform and a damping device according to any one of claims 1 to 7; wherein: The vehicle carrying platform is used to carry the experimental vehicle and move it toward the damping device at a constant speed; The damping device is used to block the vehicle carrying platform and decelerate the vehicle carrying platform to a stop at a preset acceleration value.

9. The system according to claim 8, characterized in that A vehicle positioning device is provided on the vehicle carrying platform, which is used to position the experimental vehicle so that the axle of the experimental vehicle is parallel to the track on which the vehicle carrying platform moves at a constant speed, and the center of the experimental vehicle coincides with the center line of the track on which the vehicle carrying platform moves at a constant speed.

10. The system according to claim 8, wherein: The system further comprises: A shoulder block is installed on a side of the vehicle-carrying platform close to the moving direction and is in close contact with the experimental vehicle. The shoulder block is used to make rigid contact with the experimental vehicle during the deceleration process of the vehicle-carrying platform to cause the experimental vehicle to roll over.

11. The system according to claim 10, wherein: The system further comprises: A vehicle recovery block is fixedly mounted on the shoulder to limit the rollover of the experimental vehicle that has overturned.

12. The system according to claim 8, wherein: The system further comprises: A vehicle recovery rope, the two ends of which are respectively connected to the experimental vehicle and the vehicle-carrying platform, and are used to limit the rollover of the experimental vehicle that has overturned.

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