Strut-type automatic drop lock platform truck

Abstract

The utility model discloses a kind of automatic lock platform car of bracing bar type, it is characterized in that it includes underframe and table top, universal wheel is fixed on the lower bottom surface of underframe, two groups of parallel X-shaped support arms with hinged shaft cross connection are connected between underframe and table top, the lower end between two groups of support arms is connected through crossbeam, hydraulic cylinder is connected between crossbeam and underframe, and the opening angle of two groups of support arms is controlled by the piston rod telescoping of hydraulic cylinder, so that table top is parallel and is raised or lowered, bracing bar type automatic lock device is fixed on table top, the bracing bar type automatic lock device, including one end opening rectangular frame connected in the both sides of table top through pin shaft, the both sides rod of frame is connected with table top, the crossbar of frame is connected with both sides rod, a plurality of lower concave steps matched with crossbar are made on two support arms opposite with crossbar, when table top rises, crossbar crosses step, when table top falls, crossbar falls in the recess of step, can fix support table top.

Description

Technical Field

[0001] This utility model relates to mobile workbenches, and more particularly to a strut-type automatic locking platform vehicle used in the maintenance and installation of equipment and vehicles. Background Technology

[0002] During equipment and vehicle maintenance and installation, it is often necessary to move equipment or instruments to the installation or repair location. However, these components are quite heavy, and it is difficult to lift or carry them manually, and the position is also difficult to align. It is best to have a mobile trolley with automatic lifting capabilities to assist in manual handling, assembly, disassembly, or repair. Utility Model Content

[0003] The purpose of this utility model is to provide a strut-type automatic locking platform vehicle that is simple in structure, easy to use, low in manufacturing cost, highly versatile, and has good safety.

[0004] To solve the above problems, this utility model is achieved through the following technical solution: It is characterized by comprising a rectangular base frame with lower roller tracks on both sides and a table with upper roller tracks on both sides for placing workpieces. A caster wheel is fixed to the lower surface of the base frame. Two sets of parallel, X-shaped support arms with a hinged joint are connected between the base frame and the table. One lower end of each support arm is hinged to the base frame, and the other lower end is connected to a lower roller, which is installed within the lower roller track of the base frame. One upper end of each support arm is hinged to the table, and the other upper end is connected to an upper roller, which is installed within the upper roller track of the table. At the lower end between the two sets of support arms… A hydraulic cylinder is connected between the crossbeam and the base frame, and the piston rod of the hydraulic cylinder controls the opening angle of the two sets of support arms, so that the platform can be raised or lowered in parallel. A strut-type automatic locking device is fixed on the platform. The strut-type automatic locking device includes a rectangular frame with an open end connected to both sides of the platform by pins. The side rods of the frame are connected to the platform, and the crossbar of the frame is connected to the side rods. Several recessed steps are made on the two support arms opposite to the crossbar, which are matched with the crossbar. The direction of the steps is such that when the platform rises, the crossbar can pass over the steps, and when the platform falls, the crossbar falls into the groove of the steps, which can fix and support the platform.

[0005] The base frame is fixed with an inverted U-shaped handle for moving the strut-type automatic locking platform vehicle.

[0006] There are four casters fixed to the base frame, which are fixed at the four corners of the base frame.

[0007] The U-shaped handle is equipped with a return oil handle, and a flexible shaft assembly is connected to the return oil handle. The flexible shaft assembly is connected to the tail of the Z-shaped lever plate. The head of the lever plate presses against the return oil switch of the hydraulic cylinder. By squeezing and releasing the return oil handle, the hydraulic cylinder can be controlled to return oil, thereby controlling the lowering of the platform.

[0008] The hydraulic cylinder is connected to an L-shaped foot lever extending outside the base frame via a transmission component. By stepping on the L-shaped foot lever, oil is pumped into the hydraulic cylinder, causing the piston rod to extend and lift the platform.

[0009] A U-shaped clip with an opening facing downwards is fixed to the bottom surface of the tabletop. The position of the U-shaped clip is such that the distance from the pin to the crossbar is such that the crossbar can be locked in place by the U-shaped clip and will not fall down, thus releasing the frame from its supporting function on the tabletop.

[0010] The strut-type automatic locking platform cart manufactured according to the above scheme can be used by placing heavy objects on the platform and manually pushing it to the desired position using the U-shaped handle. When the platform needs to be raised, the hydraulic cylinder is pumped with oil by stepping on the L-shaped pedal, causing the piston rod to extend and the angle between the X-shaped support arms to decrease, thus raising the platform. When the L-shaped pedal is stopped, the crossbar of the frame falls into the recessed step, providing support for the platform and preventing it from falling. When the platform needs to be lowered, the frame is flipped up, locking the crossbar with the U-shaped clip and preventing it from falling. This releases the support function of the frame on the platform. Slowly squeezing the return oil handle and pulling the flexible shaft assembly depresses the return oil switch, putting the hydraulic cylinder in the return oil state. Under the action of gravity, the piston rod retracts, gradually lowering the X-shaped support arms and the platform. When the return oil handle is released, the platform stops falling, achieving safe lifting and lowering of the strut-type automatic locking platform cart platform. It is very safe and convenient to use. Attached Figure Description

[0011] Figure 1 This is the front view of the strut-type automatic door locking platform vehicle;

[0012] Figure 2 yes Figure 1 The right view;

[0013] Figure 3 yes Figure 1 The left view;

[0014] Figure 4 yes Figure 1 A bottom view;

[0015] Figure 5 This is a diagram showing the state of the platform as it descends;

[0016] Figure 6 yes Figure 5 A magnified view of a portion of region A in the middle;

[0017] Figure 7 This is a front view of the strut-type automatic door locking platform vehicle from a downward angle;

[0018] Figure 8 It is a three-dimensional view of the strut-type automatic door locking platform vehicle from an upward angle;

[0019] Figure 9 This is an exploded view of a strut-type automatic door locking platform vehicle.

[0020] The components include: 1. Lower roller; 2. Base frame; 3. Upper roller; 4. Tabletop; 5. Casters; 6. Hinge; 7. Support arm; 8. Lower roller; 9. Upper roller; 10. Crossbeam; 11. Hydraulic cylinder; 12. Piston rod; 13. L-shaped step; 14. Support rod type automatic door locking device; 15. Pin; 16. Frame; 17. Side bar; 18. Cross bar; 19. Step; 20. U-shaped clip; 21. Handle; 22. Oil return handle; 23. Flexible shaft assembly; 24. Lever plate; 25. Oil return switch. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Figures 1 to 9This is a structural diagram of a strut-type automatic locking platform vehicle. As shown in the diagram, it includes a rectangular base frame 2 with lower roller tracks 1 on both the left and right sides, and a platform 4 with upper roller tracks 3 on both the left and right sides for placing workpieces. Four casters 5 are fixed on the lower surface of the base frame, and the casters 5 are fixed to the four corners of the base frame 2 respectively. Two sets of parallel, X-shaped support arms 7 are connected between the base frame 2 and the platform 4, with a hinge 6 in the middle. The lower end of each support arm 7 is hinged to the base frame 2, and the other lower end is connected to a lower roller 8, which is installed in the lower roller track 1 of the base frame 2. The upper end of each support arm 7 is hinged to the platform 4, and the other upper end is connected to an upper roller 9, which is installed in the upper roller track 3 of the platform 4. The lower ends of the two sets of support arms 7 are connected by a crossbeam 10. A hydraulic cylinder 11, i.e., a jack, is connected between the crossbeam 10 and the base frame 2. The opening angle of the two sets of support arms 7 is controlled by the extension and retraction of the piston rod 12 of the hydraulic cylinder 11, so that the platform 4 is raised or lowered in parallel. The hydraulic cylinder 11 is connected to an L-shaped foot rod 13 extending outside the base frame 2 through a transmission component. By stepping on the L-shaped foot rod 13, oil is pumped into the hydraulic cylinder 11, causing the piston rod 12 to extend and lift the platform 4. A strut-type automatic locking device 14 is fixed on the platform 4. The strut-type automatic locking device 14 includes a rectangular frame 16 with one open end connected to both sides of the platform 4 via pins 15. Side rods 17 of the frame 16 are connected to the platform 4, and a crossbar 18 of the frame 16 is connected to the side rods 17. Several recessed steps 19 are formed on the two support arms 7 opposite to the crossbar 18, matching the crossbar 18. The direction of the steps 19 is such that when the platform 4 rises, the crossbar 18 can pass over the steps 19; when the platform 4 falls, the crossbar 18 falls into the groove of the steps 19, thus fixing and supporting the platform 4. A downward-opening U-shaped clip 20 is fixed on the bottom surface of the platform 4. The position of the U-shaped clip 20 is such that the distance L from the pin 15 to the crossbar 18 allows the crossbar 18 to be locked and fixed by the U-shaped clip 20, preventing it from falling and releasing the supporting function of the frame 16 on the platform 4. The base frame 2 is fixed with an inverted U-shaped handle 21 for moving the pusher-type automatic locking platform vehicle. A return oil handle 22 is installed on the handle 21. A flexible shaft assembly 23 is connected to the return oil handle 22. The flexible shaft assembly 23 is connected to the tail of the Z-shaped lever plate 24. The head of the lever plate 24 presses on the return oil switch 25 of the hydraulic cylinder 11. By squeezing and releasing the return oil handle 22, the return oil of the hydraulic cylinder 11 is controlled, and the lowering of the platform 4 is controlled.

Claims

1. A strut-type automatic door locking platform vehicle, characterized by: It includes a rectangular base frame with lower roller tracks on both sides and a table with upper roller tracks on both sides for placing workpieces. Casters are fixed to the lower surface of the base frame. Two sets of parallel, X-shaped support arms, hinged together in the middle, connect the base frame and the table. One lower end of each support arm is hinged to the base frame, and the other lower end is connected to a lower roller, which is installed within the lower roller track of the base frame. One upper end of each support arm is hinged to the table, and the other upper end is connected to an upper roller, which is installed within the upper roller track of the table. A crossbeam connects the lower ends of the two sets of support arms. A hydraulic cylinder is connected to the platform, and the opening angle of the two sets of support arms is controlled by the extension and retraction of the piston rod of the hydraulic cylinder, so that the platform can be raised or lowered in parallel. A strut-type automatic locking device is fixed on the platform. The strut-type automatic locking device includes a rectangular frame with an open end connected to both sides of the platform by pins. The side rods of the frame are connected to the platform, and the crossbar of the frame is connected to the side rods. Several recessed steps are made on the two support arms opposite to the crossbar, which are matched with the crossbar. The direction of the steps is such that when the platform rises, the crossbar can pass over the steps, and when the platform falls, the crossbar falls into the groove of the steps, which can fix and support the platform.

2. The strut-type automatic door locking platform vehicle according to claim 1, characterized in that... The base frame is fixed with an inverted U-shaped handle for moving the strut-type automatic locking platform vehicle.

3. The strut-type automatic door locking platform vehicle according to claim 2, characterized in that: The U-shaped handle is equipped with a return oil handle, and a flexible shaft assembly is connected to the return oil handle. The flexible shaft assembly is connected to the tail of the Z-shaped lever plate. The head of the lever plate presses against the return oil switch of the hydraulic cylinder. By squeezing and releasing the return oil handle, the hydraulic cylinder can be controlled to return oil, thereby controlling the lowering of the platform.

4. The strut-type automatic door locking platform vehicle according to claim 1, characterized in that: There are four casters fixed to the base frame, which are fixed at the four corners of the base frame.

5. The strut-type automatic door locking platform vehicle according to claim 1, characterized in that... The hydraulic cylinder is connected to an L-shaped foot rod extending outside the base frame via a transmission component. By stepping on the L-shaped foot rod, oil is pumped into the hydraulic cylinder, causing the piston rod to extend and lift the platform.

6. The strut-type automatic door locking platform vehicle according to claim 1, characterized in that... A U-shaped clip with an opening facing downwards is fixed to the bottom surface of the tabletop. The position of the U-shaped clip is such that the distance from the pin to the crossbar is such that the crossbar can be locked in place by the U-shaped clip and will not fall down, thus releasing the frame from its supporting function on the tabletop.

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