Supporting device for automobile cabin cover

By designing a support device for the car nacelle cover, the problems of unstable support and waste of manpower in the nacelle cover are solved, and stable support and efficient production are achieved.

CN222820180UActive Publication Date: 2025-05-02CHONGQING JINKANG NEW ENERGY VEHICLE CO LTD
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Patent Information

Application Number
CN202421957774.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-13
Publication Date
2025-05-02
Estimated Expiration
2034-08-13

AI Technical Summary

Technical Problem

In the prior art, the problem of unstable support of the nacelle cover is wasteful, and the production efficiency is reduced.

Method used

A support device for the automobile nacelle cover is designed, including a connecting assembly and a supporting assembly, which is hinged with the connecting assembly through the hinge point, and the support cantilever end is arranged away from the hinge point. The support member forms a hook-like structure when the hinge point rotates, and the barrier portion blocks the downward rotation of the cantilever end, and the counterweight unit is used to adjust the center of gravity position of the support assembly.

Benefits of technology

The stable installation of the support device is achieved without additional storage, which reduces operators, improves operating efficiency and reduces production costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222820180U_ABST
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Abstract

The utility model provides a supporting device for an automobile engine room cover, which comprises a connecting component, a supporting component and a connecting component, and is characterized in that the connecting component is used for hoisting the supporting device along a first direction; the supporting assembly comprises a supporting piece, the supporting piece is hinged to the connecting assembly at a hinge point, the supporting piece is provided with a supporting cantilever used for supporting the cabin cover, the cantilever end of the supporting cantilever is arranged away from the hinge point, and when the supporting piece is in a supporting state, the extending direction of the supporting cantilever is a second direction intersecting with the first direction; the direction intersecting with the first direction and the second direction is a third direction; wherein the connecting assembly is provided with a blocking part, the plane where the first direction and the third direction are located and passing through the hinge point is a middle face, the two sides of the middle face are a supporting side and a returning side respectively, and a supporting position and a restoring position are arranged on the rotating path of the supporting assembly. The supporting device is installed at a fixed position, extra storage is not needed, storage disorder is avoided, meanwhile, supporting is stable, and no extra personnel need to be added, so that the operation efficiency is not affected.
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Description

Technical Field

[0001] The utility model belongs to the technical field of engine compartment cover assembly, in particular to a supporting device for an automobile engine compartment cover. Background Art

[0002] During the automobile production process, the adjustment of the bonnet is an important step. When adjusting the gap between the bonnet and the fender, the bonnet mounting bolts need to be loosened first, and then tightened after the adjustment is completed. The bonnet mounting bolts are all located inside the cabin, and cannot be tightened or loosened when the bonnet is closed. The bonnet needs to be lifted to have enough operating space.

[0003] At present, the following two methods are usually used to lift the bonnet: (1) using a bonnet support rod, which generally uses a metal rod with one end fixed to the ground and the other end supported in the positioning hole of the bonnet inner panel to support the bonnet; at this time, the vehicle body is not equipped with the factory support rod, and the support rod cannot be fixed to the vehicle body. This positioning method is unstable and there is a risk of slipping if you are not careful; the metal support rod is relatively hard and long, and there is a risk of damaging the body sheet metal during use; and the support rod has no fixed storage location, the on-site storage is chaotic, and there is no communication between the support rod and the conveyor line, so they cannot sense each other's working status, which is prone to accidents during production. (2) Two operators cooperate with each other. When the front cover needs to be lifted, one operator is responsible for lifting the hood while the other operator tightens or loosens the hood mounting bolts. The hood adjustment is usually performed by one operator on each side. When two operators cooperate with each other, when one operator lifts the hood, the bolts on both sides of the hood need to be tightened or loosened by the other operator, which is equivalent to doubling the workload and greatly increasing the operation time. Lifting the hood for a long time also increases the labor intensity of the operator. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a supporting device for a car engine hood, which is used to solve the problems of unstable engine hood support, waste of manpower and reduced production efficiency in the prior art.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a supporting device for a car engine cover, comprising:

[0006] A connecting assembly, used to lift the supporting device along a first direction;

[0007] A support assembly, the support assembly comprising a support member, the support member being hinged to the connection assembly at a hinge point, the support member having a support cantilever for supporting the cabin cover, the cantilever end of the support cantilever being arranged away from the hinge point, and when the support member is in a supporting state, the extension direction of the support cantilever is a second direction intersecting with the first direction; the direction intersecting with both the first direction and the second direction is a third direction;

[0008] Wherein, the connecting component has a blocking portion, the plane where the first direction and the third direction are located and passes through the hinge point is a middle plane, the two sides of the middle plane are respectively a supporting side and a return side, and there are a supporting position and a return position on the rotation path of the supporting component;

[0009] When the support assembly is located at the support position, the cantilever end of the support cantilever and the center of gravity of the support assembly are located inside the support side, the support cantilever is connected with the connecting assembly to form a hook-shaped structure for hanging the engine hood of the automobile, and the blocking portion abuts against the support member and blocks the cantilever end of the support cantilever from rotating downward;

[0010] When the support assembly is in the restored position, the center of gravity of the support assembly is located at the return side, and the portion of the support cantilever located in the support side is less than the portion of the support cantilever located in the support side when the support assembly is in the support position.

[0011] Furthermore, the support device also includes a counterweight unit for adjusting the center of gravity position of the support assembly, the counterweight unit is connected to the support member, and the counterweight unit is arranged on one side of the return side.

[0012] Furthermore, the support member also includes a support roller arranged on the cantilever end of the support cantilever, the wheel surface of the support roller is used to fit with the automobile engine hood, and the rotation axis of the support roller is arranged along the rotation axis direction of the support member.

[0013] Furthermore, there are at least two supporting cantilevers, and the supporting cantilevers are sequentially arranged at intervals along the rotation axis direction of the supporting member.

[0014] Furthermore, the connecting assembly includes a mounting plate, a support plate and a hanging member, the supporting assembly is hinged to the mounting plate, the support plate is mounted on the mounting plate, the hanging member is mounted on the support plate, and the hanging member is used to hang the supporting device.

[0015] Furthermore, the hanging member is a hollow tube, the outer wall of the hollow tube is provided with a plurality of through holes along the radial direction of the hollow tube, and the hanging member is arranged parallel to the mounting plate.

[0016] Furthermore, the support assembly also includes a handle for driving the support member to rotate around the hinge point, and the support assembly is connected to the handle.

[0017] Furthermore, the support assembly further comprises a reset limit portion, and when the support assembly is located at the restoration position, the reset limit portion is used to limit the restoration position of the support assembly.

[0018] Furthermore, the connection component also includes a sensor, and the support component is provided with a sensing block corresponding to the sensor for triggering the sensor, and the sensor is used to detect whether the support component is in a restored position.

[0019] Furthermore, the counterweight unit includes a connecting cantilever and a plurality of counterweight blocks, the connecting cantilever is fixedly connected to the support member, and each of the counterweight blocks is detachably mounted on the connecting cantilever.

[0020] As described above, the utility model has the following beneficial effects: the application hoists the entire support device on the upper part of the body-in-white through the connection assembly. When the conveyor line transfers the body-in-white to the position, the operator first opens the engine cover, and then manually lifts the support assembly, so that the support assembly rotates to the support position under the action of gravity, and the support cantilever is located at the lower part of the engine cover, and then the engine cover is lowered, and the blocking part blocks the support member. The support device provided by the application is installed in a fixed position, and no additional storage is required, and there is no storage disorder. At the same time, the support is stable and no additional personnel are required to affect the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the supporting device for the automobile engine cover provided by the utility model when it is in the supporting position;

[0022] Figure 2 for Figure 1 A magnified view of middle;

[0023] Figure 3 for Figure 1 Side view in support position.

[0024] Part Number Description

[0025] 1-support rod, 2-support roller, 3-mounting plate, 4-support plate, 5-lifting piece, 6-handle, 7-sensor, 8-sensing block, 9-mounting seat, 10-reset limit part, 11-blocking part, 12-connecting cantilever, 13 counterweight block, 14-rotating shaft. DETAILED DESCRIPTION

[0026] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0028] In order to describe the present invention in detail, first, the supporting device for the automobile engine bonnet of the present invention will be specifically described below.

[0029] like Figures 1 to 3 As shown, the supporting device for the automobile engine hood provided in the present application includes a connecting assembly and a supporting assembly, wherein the connecting assembly is installed above the supporting assembly, and the connecting assembly is used to connect the supporting device to the lifting equipment along a first direction.

[0030] The support assembly includes a support member, a counterweight unit and a handle 6. The support member is hinged to the connection assembly at a hinge point. The support member has a support cantilever and a support roller 2 for supporting the cabin cover. The cantilever end of the support cantilever is arranged away from the hinge point. When the support member is in a supporting state, the extension direction of the support cantilever is a second direction intersecting with the first direction. The support assembly is used to support the cabin cover and can be rotated at a certain angle relative to the connection assembly. The direction perpendicular to the first direction and the second direction is the third direction.

[0031] A blocking portion 11 is installed on the connecting component. The plane where the first direction and the third direction are located and passes through the hinge point is the middle plane. The two sides of the middle plane are the support side and the return side respectively. There are a support position and a return position on the rotation path of the supporting component. The first direction of this embodiment is as follows Figure 1 The X direction is shown, the second direction is the Y direction, the third direction is the Z direction, the middle plane is the XZ plane where the hinge point is located, the middle plane can be understood as the plane perpendicular to the ground at the hinge point, and the middle plane is perpendicular to the plane formed by the rotation trajectory of the supporting cantilever. The support side of the middle plane is Figure 3 The side where the middle support roller 2 is located and the other side of the middle surface are the return side.

[0032] When the support assembly is located at the support position, the cantilever end of the support arm and the center of gravity of the support assembly are located inside the support side, that is, Figure 3 On the left side of the middle Z direction, the support cantilever is connected to the connecting assembly to form a hook-shaped structure for hanging the car engine cover. The blocking portion 11 abuts against the support member and blocks the cantilever end of the support cantilever from rotating downward. Figure 1 and Figure 2 As shown, when the supporting cantilever is close to forming a certain angle with the connecting assembly, that is, when the supporting cantilever is located on the left side of the middle surface, it indicates that the supporting assembly is in the supporting position.

[0033] When the support assembly is in the restoring position, the center of gravity of the support assembly is located on the return side, and the portion of the support cantilever located inside the support side is less than the portion of the support cantilever located inside the support side when the support assembly is in the support position. When the support cantilever is in a vertical position, that is, when the support cantilever is nearly parallel to the middle plane, it means that the support assembly is in the restoring position.

[0034] The connecting assembly is used to suspend the entire supporting device. For convenient connection, the connecting assembly of this embodiment includes a mounting plate 3, a supporting plate 4 and a suspending member 5, wherein the supporting plate 4 is mounted on the mounting plate 3 and the suspending member 5 is mounted on the supporting plate 4.

[0035] Alternatively, a lifting ring may be installed on the mounting plate 3, and the lifting ring connects the entire support device to the lifting equipment on the top. In this embodiment, a support plate 4 is installed on the upper part of the mounting plate 3, and a lifting member 5 is installed on the support plate 4, and the lifting equipment is directly connected to both ends of the lifting member 5.

[0036] The hanging part 5 can be a plate or other shapes, and its two ends are mainly connected to the hanging equipment on the top. The hanging part 5 can be a hollow tube, and a plurality of through holes are provided on the outer wall of the hollow tube along the radial direction of the hollow tube, which not only reduces the weight of the hanging part 5, but also can be used as a connecting hole to facilitate the connection with the support plate 4. The hollow tube of this embodiment adopts an octagonal tube, which is a standard prefabricated part, and does not require additional processing. It only needs to be cut according to the length, and the strength is also relatively high.

[0037] The supporting device also includes a counterweight unit, which is connected to the supporting assembly and can rotate along with the rotation of the supporting assembly. The counterweight unit and the supporting assembly are respectively installed on both sides of the connecting assembly.

[0038] A groove is provided in the middle of the mounting plate 3 toward a side away from the counterweight unit, so that the counterweight unit can be avoided when the support assembly is reset and rotated.

[0039] A support plate 4 is arranged on both sides of the groove. The support plate 4 is designed to be Z-shaped, which has better strength. The bottom of the Z-shape can be connected to the mounting plate 3, and the top of the Z-shape faces the side away from the counterweight unit. After the hanging part 5 is installed, it is better to be close to the supporting position side, so that the counterweight unit will not interfere with the hanging part 5 when the supporting assembly is in the supporting position.

[0040] Side plates are arranged on both sides of the mounting plate 3, and a rotating shaft 14 is installed on the side plates. The support assembly also includes a handle 6 for driving the support member to rotate around the hinge point. The handle 6 passes through the rotating shaft 14, which is equivalent to the handle 6 being rotatably connected to the mounting plate 3. For the convenience of operation during use, a soft anti-slip cover can also be arranged at the end of the handle 6.

[0041] The support member in this embodiment is a support rod 1, the hinge point is located between the two ends of the support rod 1, one end of the support rod 1 is a cantilever end, and the other end of the support rod 1 is a limit end. When the support assembly is located at the support position, the blocking portion 11 abuts against the upper limit end. The support cantilever is between the hinge point of the support rod 1 and the cantilever end.

[0042] When the cabin cover applies a downward force to the cantilever end, the limit end tilts upward and is blocked by the blocking portion 11, so that the support rod 1 cannot continue to move, thereby supporting the cabin cover.

[0043] The middle part of the support rod 1 is hinged to the connecting assembly. In this embodiment, the support rod 1 is connected to the handle 6 and rotates with the rotation of the handle 6. The support roller 2 is arranged on the cantilever end of the support cantilever, that is, the support roller 2 is arranged on the side of the support rod 1 away from the limit end.

[0044] Among them, at least two supporting cantilevers are installed on the mounting plate 3, and each supporting cantilever is arranged in sequence and spaced along the rotation axis direction of the supporting member. In this way, after contacting the cabin cover, the cabin cover is stressed at least in two places, and there will be no unbalanced force.

[0045] In order to facilitate the connection between the support rod 1 and the handle 6, a semicircular arc can be set at the end of the support rod 1 close to the handle 6, and a fixing block is installed at the lower end of the handle 6. A semicircular arc is also set on the fixing block. The support rod 1 and the fixing block clamp the handle 6, and the support rod 1 and the fixing block are connected by bolts.

[0046] In some embodiments, the support roller 2 is made of a soft rubber block, and the support roller 2 is in contact with the cabin cover. The rubber block is used to prevent the cabin cover from being scratched.

[0047] The wheel surface of the support roller 2 is used to fit with the engine hood of the automobile, and the rotation axis of the support roller 2 is arranged along the rotation axis direction of the support member. The support roller 2 can be directly sleeved on the end of the support roller 2 close to the engine hood, but the contact area with the engine hood is not very large, and there may be point-to-point contact, and the support effect is not very good. In order to increase the contact area between the support roller 2 and the engine hood, the support roller 2 is not arranged along the extension direction of the support rod 1, but the support roller 2 is arranged crosswise with the support rod 1. In this embodiment, the support rod 1 and the support roller 2 are arranged vertically. A mounting hole is arranged on the support rod 1, and the support roller 2 is a cylindrical rubber block. The support rod 1 and the support roller 2 are connected by bolts.

[0048] like Figure 2 As shown, a mounting seat 9 is installed on the mounting plate 3. In order to prevent the support assembly from rotating at an excessive angle, a reset limit portion 10 is installed above the mounting seat 9. When the support device is not in use and is in the restored position, the support assembly rotates upward around the rotating shaft 14 under the action of the gravity of the counterweight unit, and the end on which the support roller 2 is installed faces upward. When the support cantilever contacts the reset limit portion 10, the support assembly cannot continue to rotate.

[0049] The blocking portion 11 is installed below the mounting seat 9. When the support device is used, in the process of rotating the handle 6, in order to prevent excessive rotation, the operator lifts the handle 6, and the support assembly rotates around the rotating shaft 14 with the handle 6. When the center of gravity of the support assembly exceeds the middle surface and is located on the support side, the support cantilever continues to rotate under the action of gravity. When it rotates to the right position, the limit end of the support rod is blocked by the blocking portion, the support cantilever cannot continue to rotate, the support roller 2 contacts the inner side of the cabin cover, the handle 6 cannot continue to be lifted, and the support assembly cannot continue to rotate downward. In this embodiment, by setting the reset limit portion 10 and the blocking portion 11, the rotation angle of the support assembly is only 90°.

[0050] The body in white is automatically transported through the conveyor line. In order to prevent the body from being transported forward before the support device is reset, causing damage to the body in white, the fact that the support device has not been reset indicates that the bonnet is still supported by the support assembly. Therefore, a sensor 7 is set on the mounting plate 3, and a sensing block 8 is set at the position corresponding to the support rod 1. The sensing block 8 is used to trigger the sensor. When the support device is not in use and is in the recovery position, the support assembly rotates upward under the gravity of the counterweight unit itself. After the support rod 1 rotates upward into position, the sensor 7 detects the signal of the sensing block 8, indicating that the bonnet has been covered and the conditions for the body to be transported forward are met. Only then can the body be transported without causing damage to the body. After the sensing block 8 in this embodiment rotates and resets, it conflicts with the reset limiter 10 to reset the support cantilever.

[0051] An L-shaped bracket is set on the mounting plate 3, and a mounting hole is set on the vertical section of the bracket. The sensor 7 is a cylindrical sensor. The sensor is located in the mounting hole. The extended position of the sensor can be adjusted, so that the position of the sensor 7 can be adjusted according to the thickness of the sensing block 8.

[0052] The counterweight unit is connected to the support assembly, and the counterweight unit is used to provide a force for the support assembly to automatically return to the restored position when the support assembly is not in use and needs to be restored. The counterweight unit includes a connecting cantilever 12 and a plurality of counterweights 13. The connecting cantilever 12 is connected to the handle 6, and the counterweights 13 are installed on the connecting cantilever 12. Each counterweight 13 is detachably installed on the connecting cantilever 12. The connecting cantilever 12 and the counterweight 13 are located on the handle 6, and the handle 6 is a round tube. In order to facilitate the connection between the connecting cantilever 12 and the handle 6, the connection between the connecting cantilever 12 and the connecting cantilever 6 can be set to an arc shape, and the connecting cantilever 12 wraps the handle 6 and then connects it by bolts.

[0053] Working process: After the body in white is transported to the engine cover adjustment station, when the operator needs to lift the engine cover for adjustment, the engine cover can be lifted first, and the handle 6 of the support device can be lifted up for a distance. After the handle 6 is lifted to a certain position, the center of gravity of the support assembly exceeds the middle surface and is located on the support side. The support cantilever continues to descend under the action of gravity, and the support device will automatically fall to the support position under the action of its own gravity, and the limit end will be blocked by the blocking part 11. After the support device reaches the support position, the engine cover can be lowered, and the two support rollers 2 on the support device will support the inner panel of the engine cover to keep the engine cover in an open state. At this time, the operator can release the handle 6 of the engine cover and the support device to perform other operations, such as loosening and tightening bolts, adjusting the engine cover, etc.

[0054] When the operation is completed and the engine cover needs to be lowered, the operator first lifts the engine cover, and then pulls the handle 6 of the support device down a certain distance. After pulling it down to a certain position, the support assembly rotates partially to the right so that the center of gravity of the support assembly exceeds the middle surface and is located on the return side. The support assembly then continues to rotate under the action of the counterweight unit and automatically returns to the restored position. The engine cover can then be closed normally, and the sensing block 8 contacts the reset limit portion 10, so the support assembly cannot continue to rotate. After the sensor 7 detects the sensing block 8, it indicates that the body in white can be transported forward.

[0055] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A supporting device for a car engine bonnet, characterized in that: include: A connecting assembly, used to lift the supporting device along a first direction; A support assembly, the support assembly comprising a support member, the support member being hinged to the connection assembly at a hinge point, the support member having a support cantilever for supporting the cabin cover, the cantilever end of the support cantilever being arranged away from the hinge point, and when the support member is in a supporting state, the extension direction of the support cantilever is a second direction intersecting with the first direction; the direction intersecting with both the first direction and the second direction is a third direction; Wherein, the connecting component has a blocking portion, the plane where the first direction and the third direction are located and passes through the hinge point is a middle plane, the two sides of the middle plane are respectively a supporting side and a return side, and there are a supporting position and a return position on the rotation path of the supporting component; When the support assembly is located at the support position, the cantilever end of the support cantilever and the center of gravity of the support assembly are located inside the support side, the support cantilever is connected with the connecting assembly to form a hook-shaped structure for hanging the engine hood of the automobile, and the blocking portion abuts against the support member and blocks the cantilever end of the support cantilever from rotating downward; When the support assembly is in the restored position, the center of gravity of the support assembly is located at the return side, and the portion of the support cantilever located in the support side is less than the portion of the support cantilever located in the support side when the support assembly is in the support position.

2. The supporting device for the automobile engine bonnet according to claim 1, characterized in that: The support device also includes a counterweight unit for adjusting the center of gravity position of the support assembly, the counterweight unit is connected to the support member, and the counterweight unit is arranged on one side of the return side.

3. The supporting device for automobile engine bonnet according to claim 1, characterized in that: The support member also includes a support roller (2) arranged on the cantilever end of the support cantilever, the wheel surface of the support roller (2) is used to fit with the automobile engine hood, and the rotation axis of the support roller (2) is arranged along the rotation axis direction of the support member.

4. The supporting device for automobile engine bonnet according to claim 3, characterized in that: There are at least two supporting cantilevers, and the supporting cantilevers are arranged in sequence and at intervals along the rotation axis direction of the supporting member.

5. The supporting device for a vehicle engine bonnet according to any one of claims 1 to 4, characterized in that: The connection assembly comprises a mounting plate (3), a support plate (4) and a hanging component (5); the support assembly is hinged to the mounting plate (3); the support plate (4) is mounted on the mounting plate (3); the hanging component (5) is mounted on the support plate (4); and the hanging component (5) is used to hang the support device.

6. The supporting device for automobile engine bonnet according to claim 5, characterized in that: The hanging component (5) is a hollow tube, and a plurality of through holes are arranged on the outer wall of the hollow tube along the radial direction of the hollow tube. The hanging component (5) is arranged parallel to the mounting plate (3).

7. The supporting device for automobile engine bonnet according to claim 1, characterized in that: The support assembly further comprises a handle (6) for driving the support member to rotate around the hinge point, and the support assembly is connected to the handle (6).

8. The supporting device for automobile engine bonnet according to claim 1, characterized in that: The support assembly further comprises a reset limit portion (10), and when the support assembly is located at the restoration position, the reset limit portion (10) is used to limit the restoration position of the support assembly.

9. The supporting device for automobile engine bonnet according to claim 1, characterized in that: The connection component further comprises a sensor (7), and the support component is provided with a sensing block (8) corresponding to the sensor (7) for triggering the sensor (7), and the sensor (7) is used to detect whether the support component is in a restored position.

10. The supporting device for automobile engine bonnet according to claim 2, characterized in that: The counterweight unit comprises a connecting cantilever (12) and a plurality of counterweight blocks (13); the connecting cantilever (12) is fixedly connected to the support member, and each of the counterweight blocks (13) is detachably mounted on the connecting cantilever (12).