Lifting device

Abstract

The utility model discloses a lifting device which comprises a plurality of connecting plates and oil cylinders, the connecting plates are arranged at intervals in the vertical direction, and the oil cylinders are vertically arranged on the connecting plates. In every two adjacent connecting plates, the output end of the oil cylinder located on the lower connecting plate is connected with the upper connecting plate, the output end of the oil cylinder located at the top end is connected with the lift car, and the output end of the oil cylinder located at the top end is connected with the lift car. The lifting function of the lift car is achieved by controlling the oil cylinders which are arranged up and down at intervals to sequentially stretch from top to bottom and sequentially retract from bottom to top, and the lifting device has the advantages of being high in working efficiency, high in bearing capacity, high in stability and high in safety.

Description

Technical Field

[0001] This utility model belongs to the field of lifting equipment technology, and in particular relates to a lifting device. Background Technology

[0002] Lifting equipment is widely used for lifting and handling goods. Existing lifting equipment mainly includes a vertically set frame, a car that moves up and down on the frame, and a lifting device that drives the car to move up and down. The lifting device mainly includes a chain and a hydraulic cylinder. The chain is connected to the output end of the hydraulic cylinder and the car. The hydraulic cylinder extends and retracts to drive the chain to move the car up and down. However, the load-bearing capacity is limited, and the chain is prone to breakage or loosening during operation, which affects work efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a lifting device that can solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides a lifting device, comprising:

[0005] Connecting plates, wherein multiple connecting plates are spaced apart along the vertical direction; and

[0006] The hydraulic cylinder is vertically mounted on the connecting plate. The output end of the hydraulic cylinder on the lower connecting plate of two adjacent connecting plates is connected to the upper connecting plate, and the output end of the hydraulic cylinder at the top is connected to the car.

[0007] Optionally, the oil outlet of the lower cylinder of two adjacent cylinders is connected to the oil inlet of the upper cylinder, while the oil outlet of the upper cylinder is closed.

[0008] Optionally, each of the connecting plates is provided with two hydraulic cylinders arranged symmetrically about the center of the connecting plate, and the distance between the two hydraulic cylinders increases sequentially from top to bottom.

[0009] Optionally, the length of each of the connecting plates increases sequentially from top to bottom.

[0010] Optionally, the hydraulic cylinder includes a cylinder barrel and a piston rod. The cylinder barrel has a movable cavity, and the piston rod is movably disposed in the movable cavity. The piston rod and the cylinder barrel are respectively connected to the lower connecting plate and the upper connecting plate of two adjacent connecting plates.

[0011] Optionally, the piston rod is hollow and communicates with the movable cavity, the oil inlet is located at the lower end of the piston rod and communicates with the interior of the piston rod, and the oil outlet is located at the lower end of the cylinder and communicates with the movable cavity.

[0012] Optionally, the piston rod is fitted with a plurality of wear-resistant bands along its axial direction.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by controlling multiple hydraulic cylinders arranged at intervals to extend sequentially from top to bottom and retract sequentially from bottom to top, the lifting function of the car is realized, which has the advantages of high working efficiency, strong load-bearing capacity, high stability and high safety. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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.

[0015] Figure 1 This is a cross-sectional view of the present invention.

[0016] Figure 2 This is a sectional view of the hydraulic cylinder in this utility model.

[0017] In the picture:

[0018] 100. Connecting plate;

[0019] 200, Hydraulic cylinder; 210, Cylinder barrel; 211, Moving chamber; 212, Oil outlet; 220, Piston rod; 221, Oil inlet; 222, Wear-resistant band. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0021] In the description of the embodiments of this utility model, it should be understood that if the embodiments of this utility model involve directional indications, such as up, down, left, right, front, back, inside, outside, etc., the orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of a structure. They can be mechanical or electrical connections. They can be direct connections or indirect connections through an intermediate medium, and can represent the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0024] like Figures 1 to 2 As shown, this embodiment of the utility model provides a lifting device, including a connecting plate 100 and a hydraulic cylinder 200.

[0025] Multiple connecting plates 100 are arranged at intervals along the vertical direction. A hydraulic cylinder 200 is vertically arranged on the connecting plate 100. The output end of the hydraulic cylinder 200 on the lower connecting plate 100 of two adjacent connecting plates 100 is connected to the upper connecting plate 100, and the output end of the hydraulic cylinder 200 at the top is connected to the car (not shown in the figure).

[0026] It should be understood that when the car is raised, the multiple cylinders 200 in the lifting device extend and work sequentially from top to bottom. Specifically, the top cylinder 200 first drives the car to move upward a certain distance, and then the remaining cylinders 200 further drive the corresponding connecting plates 100 to move upward from top to bottom, thereby driving the car to move upward. When the car is lowered, the multiple cylinders 200 in the lifting device reset sequentially from bottom to top. The lifting device has the advantages of high working efficiency, strong load-bearing capacity, high stability and high safety.

[0027] In one embodiment, the oil outlet 212 of the lower cylinder 200 of two adjacent cylinders 200 is connected to the oil inlet 221 of the upper cylinder 200, and the output end of the lower cylinder 200 is connected to the connecting plate 100 above it, while the oil outlet 212 of the upper cylinder 200 is closed.

[0028] During operation, hydraulic oil is injected through the oil inlet 221 of the bottom cylinder 200. The hydraulic oil flows through each cylinder 200 from bottom to top, filling the top cylinder 200 first. This causes the top cylinder 200 to drive the car upward a certain distance. Subsequently, the hydraulic oil fills each cylinder 200 from top to bottom, causing each cylinder to drive the corresponding connecting plate 100 upward a certain distance, thus ensuring the car rises stably. During return, the hydraulic oil is discharged through the oil inlet 221 of the bottom cylinder 200. Under the action of gravity, the bottom cylinder 200 moves downward to reset. Subsequently, each cylinder 200 moves downward from bottom to top, ensuring the car moves downward stably.

[0029] In one embodiment, each connecting plate 100 is provided with two hydraulic cylinders 200 arranged symmetrically about the center of the connecting plate 100 to improve the working stability of the hydraulic cylinders 200. In addition, the distance between the two hydraulic cylinders 200 increases sequentially from top to bottom to form a figure-eight shape to ensure the stability of the overall structure.

[0030] In one embodiment, the length of each connecting plate 100 increases sequentially from top to bottom to save materials, reduce space occupation, and reduce structural weight.

[0031] In one embodiment, the hydraulic cylinder 200 includes a cylinder barrel 210 and a piston rod 220. The cylinder barrel 210 has a movable cavity 211, and the piston rod 220 is movably disposed in the movable cavity 211. The piston rod 220 and the cylinder barrel 210 are respectively connected to the lower connecting plate 100 and the upper connecting plate 100 of two adjacent connecting plates 100. Further, the piston rod 220 is hollow and communicates with the movable cavity 211. An oil inlet 221 is disposed at the lower end of the piston rod 220 and communicates with the interior of the piston rod 220. An oil outlet 212 is disposed in the cylinder barrel 210. The lower end of 10 is connected to the movable cavity 211. When the car needs to rise, hydraulic oil flows from the oil inlet 221 of the bottom cylinder 200 into the interior of the piston rod 220 on the cylinder 200, and further into the movable cavity 211 of the cylinder barrel 210 on the cylinder 200. Further, it flows from the oil outlet 212 into the next cylinder 200. Under the pressure of the hydraulic oil, the cylinder barrel 210 can drive the connecting plate 100 to rise. Furthermore, the piston rod 220 is fitted with multiple wear-resistant strips 222 along its axial direction to guide the piston rod 220 and to provide a sealing function.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting device, characterized in that, include: Connecting plates, wherein multiple connecting plates are spaced apart along the vertical direction; and The hydraulic cylinder is vertically mounted on the connecting plate. The output end of the hydraulic cylinder on the lower connecting plate of two adjacent connecting plates is connected to the upper connecting plate, and the output end of the hydraulic cylinder at the top is connected to the car.

2. The lifting device according to claim 1, characterized in that, In two adjacent hydraulic cylinders, the oil outlet of the lower cylinder is connected to the oil inlet of the upper cylinder, while the oil outlet of the upper cylinder is closed.

3. The lifting device according to claim 1, characterized in that, Each of the connecting plates is provided with two hydraulic cylinders arranged symmetrically about the center of the connecting plate, and the distance between the two hydraulic cylinders increases sequentially from top to bottom.

4. The lifting device according to claim 1, characterized in that, The lengths of each connecting plate increase sequentially from top to bottom.

5. The lifting device according to claim 2, characterized in that, Also includes: The hydraulic cylinder includes a cylinder barrel and a piston rod. The cylinder barrel has a movable cavity, and the piston rod is movably disposed in the movable cavity. The piston rod and the cylinder barrel are respectively connected to the lower connecting plate and the upper connecting plate of two adjacent connecting plates.

6. The lifting device according to claim 5, characterized in that, Also includes: The piston rod is hollow and communicates with the movable cavity. The oil inlet is located at the lower end of the piston rod and communicates with the interior of the piston rod. The oil outlet is located at the lower end of the cylinder and communicates with the movable cavity.

7. The lifting device according to claim 5, characterized in that, The piston rod is fitted with multiple wear-resistant bands along its axial direction.

Images