Telescopic manual lifting appliance for lower car body

Abstract

The utility model discloses a telescopic manual lifting appliance for a lower car body, which comprises a left lifting frame and a right lifting frame which have the same structure, the left lifting frame is in sliding connection with a body frame through a linear sliding rail, and the left lifting frame and the right lifting frame are connected together through a connecting rod mechanism. The manual lifting appliance is convenient to operate, is manually operated in the whole process, does not need an additional power source, and can be easily opened and retracted by one person.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts processing and manufacturing technology, specifically relating to a telescopic manual lifting device for the undercarriage. Background Technology

[0002] On the main conveyor line of the automotive welding production workshop, when welding defects or deformation of the lower body panels occur, or when inspection is required, the lower body panels need to be hoisted from the main line onto the off-line trolley. The off-line trolley then transports the lower body panels to the body repair station for repair or inspection. After repair or inspection, the off-line trolley transports the lower body panels back to the main conveyor line, where they are manually hoisted onto the main line to continue working at the next station.

[0003] With the rise of my country's automotive industry and the diversification of consumers' car-buying awareness and preferences, the Chinese automotive market is showing a clear trend towards diversification. Various automakers are developing and producing multiple models to adapt to market changes and competition. Given the differences in body panels, traditional fixed lifting fixtures are insufficient to meet the needs of various vehicle models. Furthermore, traditional lifting fixtures often employ linear bearing sliding structures, which have relatively low load-bearing capacity. When bearing heavy lower body panels, these structures are prone to bearing rod deformation and jamming during bearing movement, leading to lifting fixture failure. Utility Model Content

[0004] The purpose of this utility model is to provide a retractable manual lifting device for the undercarriage to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a telescopic manual lifting device for a vehicle body, comprising a left-side lifting frame and a right-side lifting frame with identical structures. The left-side lifting frame is slidably connected to the main body frame via a linear slide rail, and the left-side lifting frame and the right-side lifting frame are connected together by a linkage mechanism.

[0006] Preferably, the upper part of the main frame is connected to the lifting ring via a lifting chain.

[0007] Preferably, the lower parts of the left and right hangers are respectively provided with grippers.

[0008] Preferably, the linkage mechanism includes a first link and a second link. There are two first links. One end of the first link is hinged to the left hanger and the right hanger through a second hinge pin. The other end of the first link is hinged to both ends of the second link through a first hinge pin. The middle part of the second link is hinged to the bottom of the main body frame through a hinge pin.

[0009] Preferably, the top of the gripper is fixed to the left and right hangers by a pin.

[0010] Preferably, the linear slide rails are fixed to the upper part of the main frame, and there are four linear slide rails. The linear slide rails are slidably engaged with the slider connecting seat, and the bottom of the slider connecting seat is fixedly connected to the left hanger and the right hanger.

[0011] The beneficial effects of this utility model are: It is easy to operate, entirely manually, requiring no additional power source, allowing one person to easily operate the opening and retraction of the manual lifting tool. It is highly versatile: the opening stroke of the lifting frame and the position of the grippers can be adjusted according to the undercarriage dimensions and lifting point location, making it suitable for various vehicle models. It adopts double linear guide rails, resulting in stronger load-bearing capacity, and can be used to lift large commercial vehicles. It allows for switching between long and short wheelbase models, improving the utilization rate of the lifting tool. It is easy to maintain, has a low failure rate, and facilitates daily maintenance and upkeep. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the main body frame in this utility model;

[0014] Figure 3 This is a schematic diagram of the gripper mechanism in this utility model;

[0015] Figure 4 This is a structural schematic diagram of the hanger in the open state in this utility model;

[0016] Figure 5 This is a schematic diagram of the linear guide rail in this utility model;

[0017] Figure 6 This is a schematic diagram of the linkage mechanism in this utility model;

[0018] In the diagram: 1-Left side hanger; 2-Slider connecting seat; 3-Linear slide rail; 3.1-First connecting block; 3.2-Slide rail; 3.3-Guide rail mounting plate; 3.4-Pin; 3.5-Slider; 4-First gripper; 5-Right side hanger; 6-Lifting chain; 7-Linkage mechanism; 7.1-First connecting rod; 7.2-Second connecting rod; 7.3-Deep groove ball bearing; 7.4-First hinge shaft; 7.5-Second hinge shaft; 8-Body frame; 9-Second gripper; 10-Pin; 11-U-bolt; 12-Pressure plate; 13-Lifting ring. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0020] like Figure 1 and Figure 2As shown, a retractable manual undercarriage lifting device includes a left lifting bracket 1 and a right lifting bracket 5. The left and right lifting brackets 1 and 5 are respectively connected to a linkage mechanism 7, a slider connecting seat 2, a first gripper 4, and a second gripper 9. The slider 3.5 moves in a reciprocating linear motion on a linear slide rail 3.2, which drives the slider connecting seat 2 to move in a reciprocating linear motion, thereby realizing the opening and clamping of the left lifting bracket 1 and the right lifting bracket 5. The linkage mechanism 7 connects the left lifting bracket 1 and the right lifting bracket 5, which can realize the synchronization of the movement of the left lifting bracket 1 and the right lifting bracket 5.

[0021] The slider connecting seat 2 connects the slider 3.5 and the left hanger 1 and the right hanger 5, transmitting the linear motion of the slider to the left and right hangers.

[0022] like Figure 5 As shown, the linear slide rail 3 includes a first connecting block 3.1, a linear slide rail 3.2, a guide rail mounting plate 3.3, a retaining pin 3.4, and a slider 3.5. The linear slide rail 3.2 is mounted on the guide rail mounting plate 3.3 and positioned by the retaining pin 3.4. The first connecting block 3.1 is connected to the main frame 8 to fix the linear slide rail. The slider 3.5 is mounted on the linear slide rail 3.2 and can move linearly back and forth.

[0023] The first claw (long wheelbase model position) 4 is installed on the left hanger 1 and the right hanger 5 respectively. The first claw 4 can be fixed on the hanger by the 10 pins. The first claw 4 can slide along the X direction of the hanger to switch between long and short wheelbase models. With the support at the front end of the hanger, it can lift plate parts.

[0024] The lower end of the lifting chain 6 is connected to the main frame 8 via U-bolts 11 and pressure plate 12, and the upper end is connected to the electric hoist via lifting ring 13. The electric hoist drives the lifting device and the lower body plate through the lifting chain 6 to move along the track, realizing the raising, lowering and horizontal movement of the lower body plate.

[0025] like Figure 6 As shown, the linkage mechanism 7 includes a first link 7.1, a second link 7.2, a deep groove ball bearing 7.3, a first hinge pin 7.4, and a second hinge pin 7.5. One end of the first link 7.1 is connected to the left hanger 1 and the right hanger 5 via the second hinge pin 7.5, and the other end is connected to the second link 7.2 via the first hinge pin 7.4. The center of the second link 7.2 is connected to the main frame 8 via the second hinge pin 7.5, and both ends of the second link 7.2 are connected to the first link 7.1 via the first hinge pins 7.4. Deep groove ball bearings 7.3 are installed at each connection position. When the left hanger 1 is manually pushed or pulled, the left hanger 1 drives the first link 7.1 to move, and the first link 7.1 drives the second link 7.2 to rotate around the rotation center, thereby driving the first link 7.1 at the other end to move, and the first link 7.1 at the other end drives the right hanger 5 to move, realizing the synchronous opening and retraction of the left hanger 1 and the right hanger 5. Figure 4 The image shows the state when the left hanger 1 and the right hanger 5 are opened simultaneously.

[0026] The main frame 8 of the tool is equipped with main components such as the left hanger 1, slider connecting seat 2, linear slide rail 3, right hanger 5, lifting chain 6, linkage mechanism 7, U-bolt 11, and pressure plate 12. These are the main load-bearing welded parts. The utility model uses 60*60*5 square tubes.

[0027] The second gripper 9 (short-wheelbase model position) is the position where the first gripper 4 slides along the X-axis of the hanger to the short-wheelbase model position. In this position, it can be used with the support at the front end of the hanger to lift the short-wheelbase model panels.

[0028] 1. Description of the lifting device retrieval process:

[0029] The operator uses a remote control to activate the electric hoist's upward button. The electric hoist lifts the lifting device upward. Once the device reaches a certain height, the operator activates the horizontal movement button, causing the device to move horizontally along the track. The device stops when it is directly above the lower body panel and centered. The operator then activates the downward button, lowering the device to a certain height. The operator manually opens the left lifting bracket 1, simultaneously opening the right lifting bracket 5 via the linkage mechanism 7. After both brackets are fully open, the operator activates the downward button, lowering the device until the bracket support is below the lower body support point. The operator then manually retracts the left lifting bracket 1, simultaneously retracting the right lifting bracket 5 via the linkage mechanism 7, ensuring the bracket support and the gripper support are directly below the lower body support point. Finally, the operator gently presses the upward button, causing the device to slowly rise. Once the bracket support and gripper support are fully in contact with the lower body support point, the device can gradually increase its speed to lift the device, thus securing the workpiece.

[0030] 2. Description of the lifting process:

[0031] Start the electric hoist's up button. The lifting device will grab the lower body panel and rise to a certain height before stopping. Start the electric hoist's horizontal movement button. The electric hoist will drive the lifting device to move horizontally along the track. Stop when the lifting device is directly above the lower trolley. Adjust the position of the lower trolley appropriately so that the panel is in the center position. Start the electric hoist's down button. When the lower body panel's positioning point is close to the support on the trolley, slow down the lifting device's descent speed. After the lower body panel is completely placed on the support of the lower trolley, the lifting device will continue to descend a certain distance to detach from the lower body panel. Manually operate the left lifting frame 1 to open the right lifting frame 5 simultaneously with the linkage mechanism 7. After the left and right lifting frames are fully opened, start the electric hoist's up button. The lifting device will rise. After moving the lifting device to the lifting device placement area, the lower body panel can be pushed away by the lower trolley.

[0032] 3. Switching between long and short wheelbase models

[0033] like Figure 3 As shown: the first claw 4 (long wheelbase model position) and the second claw 9 (short wheelbase model position) are the long wheelbase and short wheelbase claw positions, respectively. The claws can slide along the X direction of the hanger and can be switched for specific models. After switching, they are fixed to the hanger by the 10 pins.

[0034] It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A telescopic manual lifting device for a vehicle undercarriage, characterized in that: It includes a left hanger and a right hanger with the same structure. The left hanger is slidably connected to the main frame via a linear slide rail, and the left hanger and the right hanger are connected together by a linkage mechanism.

2. The retractable manual lifting device for a vehicle undercarriage according to claim 1, characterized in that: The upper part of the main frame is connected to the lifting ring via a lifting chain.

3. The retractable manual lifting device for a vehicle undercarriage according to claim 1, characterized in that: The lower parts of the left and right hangers are respectively equipped with grippers.

4. A telescopic manual lifting device for a vehicle body according to claim 1, characterized in that: The linkage mechanism includes a first link and a second link. There are two first links. One end of the first link is hinged to the left hanger and the right hanger through a second hinge pin. The other end of the first link is hinged to both ends of the second link through a first hinge pin. The middle part of the second link is hinged to the bottom of the main body frame through a hinge pin.

5. A telescopic manual lifting device for a vehicle body according to claim 3, characterized in that: The top of the gripper is fixed to the left and right hangers by a pin.

6. A telescopic manual lifting device for a vehicle undercarriage according to claim 1, characterized in that: The linear slide rails are fixed to the upper part of the main frame. There are four linear slide rails. The linear slide rails are slidably engaged with the slider connecting seat. The bottom of the slider connecting seat is fixedly connected to the left hanger and the right hanger.

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