A protective device

Abstract

This application relates to the field of tractor protection technology, and particularly to a protective device comprising a frame, a buffer assembly, and a clamping assembly. The frame has a channel extending from one side of the frame into its interior. The buffer assembly is located within the channel and faces its entrance. The clamping assembly is located on both sides of the channel and between the buffer assembly and the entrance. This application can reduce damage caused by tractor runaway.

Description

Technical Field

[0001] This application relates to the field of trolley protection technology, and in particular to a protective device. Background Technology

[0002] A car is a means of transportation for users, and it protects users through its body shell.

[0003] When a car is involved in a collision, its safety performance needs to be tested. This is typically done by towing the car with a small trolley to bring it to sufficient speed for a collision. The extent of damage to the car after the collision reveals its level of safety.

[0004] In related technologies, because the traction trolley has a large load and high speed, if the steel cable used to connect the car breaks, the traction trolley is prone to go out of control and cause widespread damage. Summary of the Invention

[0005] In view of this, this application provides a protective device to reduce damage caused by loss of control of the tractor.

[0006] Specifically, the following technical solutions are included:

[0007] This application provides a protective device, which includes a frame, a cushioning assembly, and a clamping assembly, wherein...

[0008] The frame has a channel that extends from one side of the frame toward the interior of the frame;

[0009] The buffer component is located in the channel and faces the entrance of the channel;

[0010] The clamping components are located on both sides of the channel and between the buffer component and the entrance of the channel.

[0011] Optionally, the clamping assembly includes a driving unit, a first clamping plate, and a second clamping plate. The driving unit is tractively connected to the first clamping plate and the second clamping plate to drive the first clamping plate and the second clamping plate to move closer to each other and further away from each other. The first clamping plate and the second clamping plate are located on opposite sides of the channel.

[0012] Optionally, the clamping assembly includes a sensing unit electrically connected to the drive unit. The sensing unit is used to transmit a signal to the drive unit when it senses that the traction trolley has entered the channel, so that the drive unit drives the first clamping plate and the second clamping plate to move closer to each other.

[0013] Optionally, the sensing unit includes a photoelectric sensor located between the first clamping plate and the entrance of the channel. The driving unit includes a time-delay relay, a cylinder, and an air source. The photoelectric sensor is electrically connected to the time-delay relay, which receives a signal from the photoelectric sensor to drive the cylinder to move the first clamping plate and the second clamping plate closer to each other.

[0014] Optionally, a gasket is provided on the side of the first clamping plate facing the second clamping plate and on the side of the second clamping plate facing the first clamping plate.

[0015] Optionally, the buffer assembly includes a buffer pad, and the entrance to the channel is located within the orthographic projection of the buffer pad onto the frame.

[0016] Optionally, the buffer assembly includes a first support plate, which is fixed to the bottom surface of the channel, and one side of the buffer pad is in contact with one side of the first support plate.

[0017] Optionally, the first support plate has a through hole that extends through the first support plate along the extension direction of the channel.

[0018] Optionally, the bottom of the first support plate has a base plate, one side of which is attached to the bottom of the channel and fixedly connected to the bottom of the channel.

[0019] Optionally, the first support plate includes reinforcing ribs located on the side of the first support plate opposite to the buffer pad and connected to both the first support plate and the base plate.

[0020] The beneficial effects of the technical solution provided in this application include at least the following: the channel allows components such as steel cables connected to the traction trolley to pass through, enabling an out-of-control traction trolley to enter the channel entrance. The buffer assembly faces the channel entrance, allowing it to directly collide with the traction trolley upon entry, thus providing a buffering effect. After the traction trolley collides with the buffer assembly, the clamping assembly further limits the traction trolley, allowing it to stop within the channel and preventing greater damage after the collision. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the structure of a protective device provided in an embodiment of this application;

[0023] Figure 2 This is a partial schematic diagram of a protective device provided in an embodiment of this application;

[0024] Figure 3 This is a partial structural diagram of a clamping assembly provided in an embodiment of this application.

[0025] The reference numerals in the figure are respectively:

[0026] 1. Framework;

[0027] 100. Channel;

[0028] 2. Buffer components;

[0029] 21. Buffer pad; 22. First support plate; 221. Base plate; 222. Reinforcing rib;

[0030] 200, through hole;

[0031] 3. Clamping assembly;

[0032] 31. Drive unit; 32. First clamping plate; 33. Second clamping plate; 341. Photoelectric sensor; 35. Second support plate; 351. Side plate;

[0033] 4. Steel cable.

[0034] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] In the embodiments of this application, directional terms such as "upper," "lower," and "side" are generally used in the following ways: Figure 1 The relative positions shown are based on the given information, and these directional terms are used only to more clearly describe the relationships between structures, not to describe absolute positions. Positions may change when the product is placed in different orientations; for example, "up" and "down" may be interchanged.

[0037] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0038] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0039] This application provides a protective device, such as Figure 1 As shown, the protective device includes a frame 1, a buffer assembly 2, and a clamping assembly 3, wherein,

[0040] The frame 1 has a channel 100 that extends from one side of the frame 1 into the interior of the frame 1;

[0041] Buffer component 2 is located in channel 100 and faces the entrance of channel 100;

[0042] The clamping assembly 3 is located on both sides of the channel 100 and between the buffer assembly 2 and the entrance of the channel 100.

[0043] Understandably, channel 100 allows components such as steel cables connected to the traction trolley to pass through, enabling an out-of-control traction trolley to enter the entrance of channel 100. The buffer assembly 2, facing the entrance of channel 100, can buffer the traction trolley upon direct collision with it. The clamping assembly 3, after the traction trolley collides with the buffer assembly 2, can further limit the traction trolley, allowing it to stop within channel 100 and preventing greater damage after the collision.

[0044] In this embodiment, the buffer component 2 achieves a buffering effect on the traction trolley by colliding with it and causing the traction trolley to decelerate. Specifically, the buffer component 2 can generate a force opposite to the direction of movement of the traction trolley by deforming entirely or partially. This force continuously acts on the traction trolley, allowing it to be continuously decelerated until it stops.

[0045] In this embodiment of the application, the channel 100 of the frame 1 is used to accommodate the clamping component 3 and the buffer component 2, which can completely or partially surround the two.

[0046] In this embodiment, the thickness of the entrance side of the channel 100 is greater than the thickness of the other sides to resist the impact caused when the traction trolley deviates from its mode of movement. Specifically, the thickness of the entrance side of the channel 100 can be 3 to 10 times that of the other sides.

[0047] In this embodiment of the application, the frame 1 can be formed by welding multiple plates together, and the thickness of the plates can be greater than 50mm.

[0048] In this embodiment, the clamping component 3 can be used to maintain contact with the side of the traction trolley after it enters the channel 100, thereby reducing the speed of the traction trolley. Specifically, the photoelectric sensor 341 can confirm whether the traction trolley has entered the channel 100, and after confirming that it has entered the channel 100, the clamping component 3 is activated to clamp the traction trolley.

[0049] In this embodiment, the clamping component 3 can also be used to maintain contact with the traction trolley after it stops, in order to prevent the traction trolley from falling and to maintain its stable posture.

[0050] In this embodiment, the clamping component 3 can clamp the opposite sides of the traction trolley and fix the traction trolley. It can also contact the top and bottom surfaces of the traction trolley to clamp it, thereby limiting the movement of the traction trolley.

[0051] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, the clamping assembly 3 includes a driving part 31, a first clamping plate 32 and a second clamping plate 33. The driving part 31 is connected to the first clamping plate 32 and the second clamping plate 33 respectively to drive the first clamping plate 32 and the second clamping plate 33 to move closer and further away from each other. The first clamping plate 32 and the second clamping plate 33 are located on opposite sides of the channel 100 respectively.

[0052] Understandably, the drive unit 31, through its driving action on the first clamping plate 32 and the second clamping plate 33, can move the first clamping plate 32 and the second clamping plate 33 closer together and further apart. When the first clamping plate 32 and the second clamping plate 33 move further apart, the gap between them allows the traction trolley to enter, which is beneficial for the traction trolley to collide with the buffer assembly 2 and complete deceleration; when the first clamping plate 32 and the second clamping plate 33 move closer together, they can simultaneously contact both sides of the traction trolley, thereby limiting the movement of the traction trolley.

[0053] In this embodiment, the outer casing of the drive unit 31 can be fixed within the channel 100, so that the wall of the channel 100 can provide sufficient support for the drive unit 31 to resist the reaction force from the first clamping plate 32 and the second clamping plate 33 when clamping the traction trolley. The outer casing of the drive unit 31 can be fixed to the wall of the channel 100 by means of bolts or similar connections.

[0054] In this embodiment, the first clamping plate 32 and the second clamping plate 33 can be supported by the second support plate 35, allowing them to move closer and further apart under the action of the drive unit 31. One end of the second support plate 35 can be connected to the side where the channel 100 of the frame 1 is located, and the connection force with the frame 1 provides support for the first clamping plate 32 and the second clamping plate 33.

[0055] In this embodiment, the end of the second support plate 35 has a side plate 351, one side of which is attached to the side where the entrance of the channel 100 of the frame 1 is located, thereby improving the connection performance between the second support plate 35 and the frame 1.

[0056] In this embodiment, the side plate 351 and the frame 1 can be connected by welding, bolting or other means.

[0057] In this embodiment, the drive unit 31 can be a power source such as a motor or cylinder, which clamps the traction trolley after determining that it has lost control and entered the channel 100.

[0058] In this embodiment, there may be one drive unit 31 that drives the first clamping plate 32 and the second clamping plate 33 simultaneously, or there may be two drive units 31 that drive the first clamping plate 32 and the second clamping plate 33 in a one-to-one correspondence.

[0059] In this embodiment, the clamping assembly 3 can be used to maintain contact with the side of the traction trolley after it enters the channel 100, thereby reducing the speed of the traction trolley. Specifically, the photoelectric sensor 341 can confirm whether the traction trolley has entered the channel 100, and after confirming that it has entered the channel 100, it activates the first clamping plate 32 and the second clamping plate 33 to move closer to each other to clamp the traction trolley.

[0060] In some embodiments of this application, such as Figure 1 As shown, the clamping assembly 3 includes a sensing unit that is electrically connected to the drive unit 31. The sensing unit is used to transmit a signal to the drive unit 31 when it senses that the traction trolley has entered the channel 100, so that the drive unit 31 drives the first clamping plate 32 and the second clamping plate 33 to move closer to each other.

[0061] It is understandable that when the sensing unit detects that the traction trolley has entered the channel 100, it indicates that the traction trolley has lost control. By transmitting a signal to the drive unit 31, it is beneficial for the traction trolley to be clamped by the first clamping plate 32 and the second clamping plate 33 after colliding with the buffer assembly 2, so as to improve the stability of the traction trolley after it stops.

[0062] In this embodiment, the sensing unit can be an infrared sensor. When an object passes by, it blocks the infrared light. The infrared sensor can detect the change in infrared light and thus transmit a signal to the driving unit 31.

[0063] In this embodiment, the sensing unit can be a magnetic field sensor. When an object passes by, the magnetic field near the magnetic field sensor changes, and the magnetic field sensor can detect these changes, thereby transmitting a signal to the drive unit 31.

[0064] In this embodiment, the sensing unit can be a weight sensor. When an object passes by, the weight near the weight sensor changes, and the weight sensor can detect these changes and transmit a signal to the drive unit 31.

[0065] In this embodiment, after the drive unit 31 drives the first clamping plate 32 and the second clamping plate 33 to approach each other for a period of time, it can drive the two to separate, so as to facilitate the workers to move the traction trolley away.

[0066] In some embodiments of this application, such as Figure 1 and Figure 3 As shown, the sensing unit includes a photoelectric sensor 341, which is located between the first clamping plate 32 and the entrance of the channel 100. The driving unit 31 includes a time delay relay, a cylinder and an air source. The photoelectric sensor 341 is electrically connected to the time delay relay, which is used to receive the signal from the photoelectric sensor 341 so that the air source drives the cylinder to move and move the first clamping plate 32 and the second clamping plate 33 closer to each other.

[0067] Understandably, the photoelectric sensor 341 can sense whether the traction trolley has entered the channel 100. After sensing that the traction trolley has entered the channel 100, the time delay relay can receive the signal from the photoelectric sensor 341, which connects the cylinder and the air source. This allows the cylinder to move and drive the first clamping plate 32 and the second clamping plate 33 to move closer together, thereby clamping the traction trolley.

[0068] In this embodiment, the cylinder includes a cylinder body and a piston. Receiving cavities are formed between the two sides of the piston and the rigid body. The air source and the cylinder can be connected by a solenoid valve. The solenoid valve can control the amount of gas in the cylinder by opening and closing the corresponding positions. The piston in the cylinder will always move towards the receiving cavity with lower air pressure until the air pressure on both sides is balanced, thus realizing the control of the movement of the first clamping plate 32 and the second clamping plate 33.

[0069] When the time delay relay receives a signal from the photoelectric sensor 341, it starts timing. After the set time is reached, the solenoid valve is activated, which increases the amount of gas in one of the receiving chambers, thereby moving the piston.

[0070] The set time can be 1 second, 2 seconds or 3 seconds, so as to clamp the tractor as tightly as possible after the collision to achieve its limiting effect.

[0071] In this embodiment, the photoelectric sensor 341 can record the time it is blocked. The control module calculates the moving speed of the traction trolley, and then estimates the time required for the traction trolley to collide with the buffer assembly 2. This time is added to the calculation time as a set time, thus preventing excessive friction between the first clamping plate 32 and the second clamping plate 33, which could lead to damage. The distance between the buffer assembly 2 and the entrance of the channel 100 is greater than the length of the traction trolley, ensuring sufficient calculation time for the control module and preventing the photoelectric sensor 341 from remaining blocked after the traction trolley collision.

[0072] In this embodiment, the time required for the tractor to stop from collision can be calculated based on its moving speed. Specifically, the acceleration of the tractor during the process from collision to stop can be set according to its moving speed, and the time from collision to stop can be obtained according to the velocity formula.

[0073] In this embodiment, the buffer component 2 can set a lookup table, where each speed of the traction trolley corresponds to an acceleration. Based on the moving speed of the traction trolley obtained by the photoelectric sensor 341, the corresponding acceleration is selected as the time for the traction trolley to stop from collision.

[0074] In some embodiments of this application, such as Figure 1 As shown, a gasket is provided on the side of the first clamping plate 32 facing the second clamping plate 33 and the side of the second clamping plate 33 facing the first clamping plate 32.

[0075] Understandably, the gasket can replace the first clamping plate 32 and the second clamping plate 33 in contact with the side of the traction trolley. It has sufficient deformation capacity to accommodate the movement of the side of the traction trolley during the contact process, so as to reduce the wear on the side of the traction trolley.

[0076] In this embodiment, the gasket can be connected to the first clamping plate 32 by means of bonding or other methods.

[0077] In this embodiment, the gasket can be connected to the second clamping plate 33 by means of bonding or other methods.

[0078] In this embodiment, a connecting layer may be arranged on the side of the gasket that is connected to the first clamping plate 32 to improve the connection performance between the gasket and the first clamping plate 32.

[0079] In this embodiment, a connecting layer may be arranged on the side of the gasket that is connected to the second clamping plate 33 to improve the connection performance between the gasket and the second clamping plate 33.

[0080] In some embodiments of this application, such as Figure 1As shown, the buffer assembly 2 includes a buffer pad 21, and the entrance of the channel 100 is located within the orthographic projection of the buffer pad 21 onto the frame 1.

[0081] Understandably, the entrance of channel 100 is located within the orthographic projection of buffer pad 21 onto frame 1, which facilitates direct contact between the traction trolley and buffer pad 21 upon entry from the entrance of channel 100. Buffer pad 21 can deform upon direct contact with the traction trolley; the recovery speed of this deformation is relatively slow, thus absorbing the impact generated by the traction trolley and reducing damage to the traction trolley caused by direct contact with buffer assembly 2.

[0082] In this embodiment, the buffer pad 21 may be made of a suitable material to withstand the impact from the traction trolley.

[0083] In some embodiments of this application, such as Figure 1 As shown, the buffer assembly 2 includes a first support plate 22, which is fixed to the bottom surface of the channel 100, and one side of the buffer pad 21 is in contact with one side of the first support plate 22.

[0084] Understandably, the first support plate 22 is fixed to the bottom surface of the channel 100. It can maintain a relatively fixed position by using the connection force with the bottom surface of the channel 100. This can support the buffer pad 21, which is conducive to the buffer pad 21 maintaining contact with the traction trolley to withstand the impact. At the same time, it can maintain a relatively fixed position, so that the traction trolley can be continuously decelerated until it stops during the impact.

[0085] In this embodiment, when the buffer pad 21 is in direct contact with the traction trolley, the first support plate 22 can exert a connection force with the bottom surface of the channel 100. The direction of the connection force is opposite to that of the traction trolley, thereby helping the traction trolley to decelerate until it stops.

[0086] In this embodiment, one side of the buffer pad 21 and one side of the first support plate 22 can be bonded together by means of adhesive bonding, bolt connection or other methods.

[0087] In some embodiments of this application, such as Figure 1 As shown, the first support plate 22 has a through hole 200, which extends through the first support plate 22 along the extension direction of the channel 100.

[0088] Understandably, the traction trolley typically moves by the traction of a steel cable. The through-hole 200 in the first support plate 22 allows the steel cable to pass through, enabling it to move the traction trolley within the channel 100. The through-hole 200 extends through the first support plate 22 along the extension direction of the channel 100, facilitating the direct passage of the steel cable from the entrance of the channel 100 through the through-hole 200 to achieve the traction effect on the traction trolley.

[0089] In this embodiment, the through hole 200 can be located at the bottom of the first support plate 22 and extend radially to the edge of the first support plate 22, which is beneficial for the first support plate 22 to form the through hole 200 by cutting or other means.

[0090] In this embodiment, the first support plate 22 can be formed by casting or other methods, and the through hole 200 is formed by setting the shape of the mold during the casting process.

[0091] In some embodiments of this application, such as Figure 1 As shown, the bottom of the first support plate 22 has a base plate 221, one side of which is attached to the bottom of the channel 100 and is fixedly connected to the bottom of the channel 100.

[0092] It is understandable that the base plate 221 is connected to the bottom of the channel 100, and can have sufficient contact area with the bottom of the channel 100 to improve the connection force between the first support plate 22 and the bottom of the channel 100.

[0093] In this embodiment, the base plate 221 and the bottom of the channel 100 can be connected by welding, bolts or other means.

[0094] In some embodiments of this application, such as Figure 1 As shown, the first support plate 22 includes a reinforcing rib 222, which is located on the side of the first support plate 22 away from the buffer pad 21 and is connected to both the first support plate 22 and the base plate 221.

[0095] It is understandable that when the first support plate 22 is subjected to an impact from the traction trolley, the reinforcing rib 222 can transfer the impact to the base plate 221, while using its own shape characteristics to resist the impact. This combination can improve the structural rigidity of the first support plate 22.

[0096] In this embodiment, the reinforcing rib 222 and the first support plate 22 can be connected by welding or other means.

[0097] In this embodiment, the reinforcing rib 222 and the base plate 221 can be connected by welding or other means.

[0098] In this embodiment of the application, the first support plate 22 includes two reinforcing ribs 222, which are respectively arranged on opposite sides of the through hole 200.

[0099] In this embodiment, the reinforcing rib 222 can be triangular in shape, with its two adjacent sides respectively connected to one side of the base plate 221 and the first support plate 22.

[0100] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0101] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0102] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A protective device, characterized in that, The protective device includes a frame (1), a buffer assembly (2), and a clamping assembly (3), wherein, The frame (1) has a channel (100) that extends from one side of the frame (1) into the interior of the frame (1); The buffer assembly (2) is located in the channel (100) and faces the entrance of the channel (100); The clamping assembly (3) is located on both sides of the channel (100) and between the buffer assembly (2) and the entrance of the channel (100); The buffer assembly (2) includes a buffer pad (21), and the entrance of the channel (100) is located within the orthographic projection of the buffer pad (21) onto the frame (1). The buffer assembly (2) includes a first support plate (22), which is fixed to the bottom surface of the channel (100), and one side of the buffer pad (21) is in contact with one side of the first support plate (22). The first support plate (22) has a through hole (200) that extends through the first support plate (22) along the extension direction of the channel (100).

2. The protective device according to claim 1, characterized in that, The clamping assembly (3) includes a drive unit (31), a first clamping plate (32), and a second clamping plate (33). The drive unit (31) is connected to the first clamping plate (32) and the second clamping plate (33) respectively to drive the first clamping plate (32) and the second clamping plate (33) to move closer and further away from each other. The first clamping plate (32) and the second clamping plate (33) are located on opposite sides of the channel (100).

3. The protective device according to claim 2, characterized in that, The clamping assembly (3) includes a sensing unit electrically connected to the drive unit (31). The sensing unit is used to transmit a signal to the drive unit (31) when it senses that the traction trolley has entered the channel (100), so that the drive unit (31) drives the first clamping plate (32) and the second clamping plate (33) to move closer to each other.

4. The protective device according to claim 3, characterized in that, The sensing unit includes a photoelectric sensor (341) located between the first clamping plate (32) and the entrance of the channel (100). The driving unit (31) includes a time delay relay, a cylinder and an air source. The photoelectric sensor (341) is electrically connected to the time delay relay. The time delay relay is used to receive a signal from the photoelectric sensor (341) so that the air source drives the cylinder to move and move the first clamping plate (32) and the second clamping plate (33) closer to each other.

5. The protective device according to claim 2, characterized in that, Gaskets are provided on the side of the first clamping plate (32) facing the second clamping plate (33) and the side of the second clamping plate (33) facing the first clamping plate (32).

6. The protective device according to claim 1, characterized in that, The first support plate (22) has a bottom plate (221) at its bottom. One side of the bottom plate (221) is attached to the bottom of the channel (100) and is fixedly connected to the bottom of the channel (100).

7. The protective device according to claim 6, characterized in that, The first support plate (22) includes a reinforcing rib (222), which is located on the side of the first support plate (22) away from the buffer pad (21) and is connected to both the first support plate (22) and the bottom plate (221).

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