A vehicle body frame jacking mechanism

Abstract

The utility model relates to the field of car body chassis jacking, specifically a car body chassis jacking mechanism, including shearing -type lift body, the top fixedly connected with platform of shearing -type lift body, be provided with support mechanism between shearing -type lift body and platform, the support mechanism includes base, the base fixedly connected in the bottom of shearing -type lift body, the inner wall of base is rotatably connected with the inclined plate through the pivot, one end of the inclined plate is rotatably connected with the locating plate through the pivot, the inner wall of inclined plate is provided with the support plate, one end of support plate is fixedly connected with the locating rod, the inner wall of base is opened and is limited the groove, the utility model discloses through setting up support mechanism, locating plate, inclined plate, support plate and base constitute stable triangle support structure together, can provide independent rigid structure support after platform lifting in place, share platform and vehicle load.

Description

Technical Field

[0001] This utility model relates to the field of vehicle chassis lifting, specifically a vehicle chassis lifting mechanism. Background Technology

[0002] A vehicle chassis lifting mechanism is a device used to lift the body or chassis of a car. This device is widely used in the automotive repair, maintenance, inspection, and manufacturing processes to facilitate technicians in performing operations on the underside of the vehicle, such as changing tires, inspecting and repairing the suspension system, transmission system, and exhaust system.

[0003] Some scissor lifts use hydraulic cylinders as the driving element to achieve the lifting and lowering of the platform. The hoses, joints, seals and other components in the hydraulic system are vulnerable parts. During long-term use, they are prone to rupture or leakage due to aging and wear. Once the high-pressure oil pipe suddenly bursts or the cylinder seal fails, the system pressure will be lost instantly, causing the lifting platform to fall rapidly under the action of gravity, which may cause serious injury or death to maintenance personnel working under the vehicle. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, some scissor lifts use hydraulic cylinders as driving elements to achieve the lifting and lowering of the platform. Components such as hoses, joints, and seals in the hydraulic system are vulnerable parts and are prone to rupture or leakage due to aging and wear during long-term use. If the high-pressure oil pipe suddenly bursts or the cylinder seal fails, the system pressure will be lost instantly, causing the lifting platform to fall rapidly under gravity, which may cause serious injury or death to maintenance personnel working under the vehicle. This utility model proposes a vehicle chassis lifting mechanism.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a vehicle chassis lifting mechanism, including a scissor lift body, a platform fixedly connected to the top of the scissor lift body, and a support mechanism provided between the scissor lift body and the platform; The support mechanism includes a base, which is fixedly connected to the bottom of the scissor lift body. An inclined plate is rotatably connected to the inner wall of the base via a pivot. A positioning plate is rotatably connected to one end of the inclined plate via a pivot. The top of the positioning plate is fixedly connected to the bottom of the platform. A support plate is provided on the inner wall of the inclined plate. A positioning rod is fixedly connected to one end of the support plate. A number of limit grooves are formed on the inner wall of the base. The bottom of the support plate contacts the inner wall of the limit groove.

[0006] Preferably, a torsion spring is fitted on the surface of the rotating shaft that is rotatably connected to the inner wall of the inclined plate. One end of the torsion spring is fixedly connected to the inner wall of the base, and the other end of the torsion spring is fixedly connected to the surface of the inclined plate.

[0007] Preferably, the inclined plate has a groove on its inner wall, and the support plate is rotatably connected to the inner wall of the groove via a rotating shaft.

[0008] Preferably, a fixing plate is fixedly connected to the top of the support plate, and an electric telescopic rod is provided between the fixing plate and the side opposite to the inclined plate.

[0009] Preferably, a mounting base is fixedly connected to one side of the inclined plate, and both ends of the electric telescopic rod are rotatably connected to the inner wall of the mounting base and the fixed plate via a rotating shaft.

[0010] Preferably, the inner wall of the base is provided with two sliding grooves, and the two ends of the positioning rod contact the inner walls of the two sliding grooves respectively.

[0011] The advantages of this utility model are: This utility model features a support mechanism with a positioning plate connected to the bottom of the platform, which rises and falls synchronously with the platform. When the platform is raised by controlling the scissor lift body, the positioning plate drives one end of the inclined plate upward via a rotating shaft, while the other end of the inclined plate rotates around a rotating shaft fixed to the base, thus unfolding the inclined plate. As the inclined plate rises, the connected support plate unfolds accordingly. When the scissor lift body stops, the bottom of the support plate embeds into the limiting groove of the base, achieving a positioning lock. At this time, the positioning plate, inclined plate, support plate, and base together form a stable triangular support structure, providing independent rigid structural support after the platform is raised to the correct position, sharing the load of the platform and vehicle. Even if the hydraulic system of the scissor lift body experiences hydraulic system failures such as oil pipe rupture or seal failure, the triangular support structure can prevent the platform from falling, avoiding personal injury to personnel working under the vehicle, and enhancing safety and reliability during use. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a partial structural schematic diagram of the support mechanism of this utility model; Figure 4 This is a partial structural diagram of the limiting groove of this utility model; Figure 5 This is a partial structural diagram of the electric telescopic pole of this utility model.

[0014] In the diagram: 1. Scissor lift body; 2. Support mechanism; 201. Base; 202. Inclined plate; 203. Positioning plate; 204. Support plate; 205. Positioning rod; 206. Limiting groove; 3. Platform; 4. Electric telescopic rod; 5. Torsion spring; 6. Groove; 7. Slide groove; 8. Fixing plate; 9. Mounting base. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0016] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail. This application discloses a vehicle chassis lifting mechanism. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4 A vehicle chassis lifting mechanism includes a scissor lift body 1, a platform 3 fixedly connected to the top of the scissor lift body 1, and a support mechanism 2 provided between the scissor lift body 1 and the platform 3. The support mechanism 2 includes a base 201, which is fixedly connected to the bottom of the scissor lift body 1. An inclined plate 202 is rotatably connected to the inner wall of the base 201 via a pivot. A positioning plate 203 is rotatably connected to one end of the inclined plate 202 via a pivot. The top of the positioning plate 203 is fixedly connected to the bottom of the platform 3. A support plate 204 is provided on the inner wall of the inclined plate 202, and a positioning rod 205 is fixedly connected to one end of the support plate 204. Limiting grooves 206 are formed on the inner wall of the base 201. The bottom of the support plate 204 contacts the inner wall of the limiting grooves 206. Through the support mechanism 2, the positioning plate 203 is connected to the bottom of the platform 3 and rises and falls synchronously with the platform 3. When the platform 3 is raised by the scissor lift body 1, the positioning plate 203 drives one end of the inclined plate 202 via the pivot. As the scissor lift moves upward, the other end of the tilt plate 202 rotates around the pivot fixed to the base 201, thus unfolding the tilt plate 202. As the tilt plate 202 rises, the connected support plate 204 unfolds accordingly. When the scissor lift body 1 stops, the bottom of the support plate 204 will be embedded in the limiting groove 206 of the base 201 to achieve positioning lock. At this time, the positioning plate 203, the tilt plate 202, the support plate 204 and the base 201 together form a stable triangular support structure, which can provide independent rigid structural support after the platform 3 is raised to the position, and share the load of the platform 3 and the vehicle. Even if the hydraulic system fails such as oil pipe rupture or seal failure in the cylinder of the scissor lift body 1, the triangular support structure can prevent the platform 3 from falling, avoid personal injury to the personnel working under the vehicle, and enhance the safety and reliability during use.

[0017] Reference Figure 3 A torsion spring 5 is sleeved on the surface of the rotating shaft that rotatably connects the base 201 and the inner wall of the inclined plate 202. One end of the torsion spring 5 is fixedly connected to the inner wall of the base 201, and the other end of the torsion spring 5 is fixedly connected to the surface of the inclined plate 202. With the setting of the torsion spring 5, when the inclined plate 202 is unfolded, the torsion spring 5 will be torsion. The torsion force of the torsion spring 5 can provide the inclined plate 202 with automatic reset capability and prevent the inclined plate 202 from getting stuck during the reset process. Reference Figure 3 The inclined plate 202 has a groove 6 on its inner wall. The support plate 204 is rotatably connected to the inner wall of the groove 6 via a rotating shaft. The groove 6 provides rotation space for the support plate 204, which is rotatably connected to the inclined plate 202 via a rotating shaft, ensuring the stability of the support plate 204 when unfolded and preventing the support plate 204 from being stuck. Reference Figure 5A fixing plate 8 is fixedly connected to the top of the support plate 204. An electric telescopic rod 4 is provided between the fixing plate 8 and the side opposite to the inclined plate 202. The fixing plate 8 provides support for the electric telescopic rod 4, ensuring the stability of the electric telescopic rod 4 installation and preventing the electric telescopic rod 4 from falling off. The extension and retraction of the electric telescopic rod 4 can drive the support plate 204 to disengage from the limiting groove 206 and cancel the limitation of the support plate 204. Reference Figure 5 An installation base 9 is fixedly connected to one side of the inclined plate 202. Both ends of the electric telescopic rod 4 are rotatably connected to the inner wall of the installation base 9 and the fixed plate 8 through the rotating shaft. The installation base 9 can connect the electric telescopic rod 4 to the inclined plate 202, providing a force support point for the electric telescopic rod 4, so that the electric telescopic rod 4 can transmit the telescopic force to the support plate 204 through the rotating shaft. Reference Figure 4 The inner wall of the base 201 is provided with two sliding grooves 7. The two ends of the positioning rod 205 contact the inner walls of the two sliding grooves 7 respectively. The sliding grooves 7 can guide and limit the positioning rod 205, preventing the positioning rod 205 from detaching from the base 201 during the movement of the support plate 204. At the same time, the sliding grooves 7 provide space for the positioning rod 205 to move during the unlocking process.

[0018] Working principle: The scissor lift uses a hydraulic pump as its power source, driving the cylinders to extend and retract. The extending and retracting ends of the cylinders push the cross scissor arms to expand or contract. The scissor arms rotate around their pivot points, positioning the vehicle on the two platforms 3. The expansion of the cross scissor arms causes the top platform 3 to rise synchronously, lifting the vehicle. This is existing technology and will not be elaborated further. As the platform 3 rises, the connected positioning plate 203 also rises synchronously. As the positioning plate 203 rises, one side of the positioning plate 203, through a rotating shaft, causes one end of the tilting plate 202 to rise accordingly. 02 The other end is rotatably connected to the base 201 via a pivot, forming a pivot point. During the lifting process, the tilting plate 202 gradually unfolds and tilts around the pivot inside the base 201. At the same time, the torsion spring 5 on the surface of the pivot twists with the movement, storing a certain amount of elastic potential energy to provide power for the subsequent reset of the tilting plate 202. Meanwhile, there is a support plate 204 in the groove 6 on the tilting plate 202. The support plate 204 is lifted synchronously with the tilting plate 202 via the pivot. The bottom of the support plate 204 is connected to a positioning rod 205. The two ends of the positioning rod 205 are located at two sliding surfaces. The inner wall of groove 7 guides the positioning rod 205 and prevents the bottom of the support plate 204 from detaching from the base 201. As the inclined plate 202 continues to unfold, the support plate 204 slides and rises within the groove 7, causing it to tilt. When the platform 3 rises to the predetermined position and stops, the bottom of the support plate 204 automatically falls into the limiting groove 206 of the base 201 under the combined action of gravity and structural linkage, thus limiting the inclined plate 202. At this point, the positioning plate 203, the inclined plate 202, the support plate 204, and the base 201 together form a stable triangle. The support structure supports the scissor lift body 1. When the scissor lift body 1 needs to be lowered, the user can start the electric telescopic rod 4 through an external control switch. The electric telescopic rod 4 is powered by an external power source. The telescopic end of the electric telescopic rod 4 retracts and rotates on the inner wall of the mounting base 9 and the fixing plate 8 through the rotating shaft. The force is transmitted through the rotating shaft, causing the bottom of the support plate 204 to be lifted, so that the support plate 204 is simultaneously released from the limiting groove 206, thus releasing the lock on the support plate 204 and realizing the lowering of the scissor lift body 1.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A vehicle chassis lifting mechanism, comprising a scissor lift body (1), characterized in that: The top of the scissor lift body (1) is fixedly connected to a platform (3), and a support mechanism (2) is provided between the scissor lift body (1) and the platform (3). The support mechanism (2) includes a base (201), which is fixedly connected to the bottom of the scissor lift body (1). An inclined plate (202) is rotatably connected to the inner wall of the base (201) via a rotating shaft. A positioning plate (203) is rotatably connected to one end of the inclined plate (202) via a rotating shaft. The top of the positioning plate (203) is fixedly connected to the bottom of the platform (3). A support plate (204) is provided on the inner wall of the inclined plate (202). A positioning rod (205) is fixedly connected to one end of the support plate (204). A limiting groove (206) is opened on the inner wall of the base (201). There are several limiting grooves (206). The bottom of the support plate (204) is in contact with the inner wall of the limiting groove (206).

2. The lifting mechanism according to claim 1, characterized in that: A torsion spring (5) is fitted on the surface of the rotating shaft that is rotatably connected to the inner wall of the inclined plate (202). One end of the torsion spring (5) is fixedly connected to the inner wall of the base (201), and the other end of the torsion spring (5) is fixedly connected to the surface of the inclined plate (202).

3. The vehicle chassis lifting mechanism according to claim 1, characterized in that: The inclined plate (202) has a groove (6) on its inner wall, and the support plate (204) is rotatably connected to the inner wall of the groove (6) via a rotating shaft.

4. The vehicle chassis lifting mechanism according to claim 1, characterized in that: A fixing plate (8) is fixedly connected to the top of the support plate (204), and an electric telescopic rod (4) is provided between the fixing plate (8) and the side opposite to the inclined plate (202).

5. A vehicle underbody jacking mechanism according to claim 4, wherein: One side of the inclined plate (202) is fixedly connected to a mounting base (9), and both ends of the electric telescopic rod (4) are rotatably connected to the inner wall of the mounting base (9) and the fixed plate (8) through a rotating shaft.

6. The vehicle chassis lifting mechanism according to claim 1, characterized in that: The inner wall of the base (201) is provided with a sliding groove (7), and there are two sliding grooves (7). The two ends of the positioning rod (205) are respectively in contact with the inner walls of the two sliding grooves (7).

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