Double-oil-cylinder lifting platform

Abstract

The utility model provides a double-oil-cylinder lifting platform which comprises a bottom frame, a top frame used for supporting the bottom frame, a scissor fork assembly connected with the bottom frame and the top frame, a driving device used for driving the scissor fork assembly to be opened and closed and two anti-falling oil cylinders, and the two anti-falling oil cylinders are communicated through a pipeline. According to the double-oil-cylinder lifting platform, the two anti-falling oil cylinders are arranged, under the condition that the same anti-falling effect is achieved, the size of a single oil cylinder can be reduced, and installation can be achieved in a narrow space.

Description

Technical Field

[0001] The utility model relates to the field of lifting devices, and particularly relates to a double-cylinder lifting platform. Background Art

[0002] When the motor brake fails, the lead screw breaks or the electric control fails in the existing lifting platform, the anti-fall oil cylinder device will lock up, the pressure switch will alarm, and the system will stop. In this case, the lifting platform loses power and cannot move, thus protecting the damage of the lifting platform and related devices on the tabletop.

[0003] However, when the lifting space is very small but the load is very large, a large oil cylinder is required at this time, but there is not enough space in the existing small lifting platform to install a large oil cylinder.

[0004] In view of this, it is necessary to improve the existing double-cylinder lifting platform to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a double-cylinder lifting platform to solve the problem that the existing lifting platform does not have enough space to install a large oil cylinder.

[0006] To achieve the above purpose, the utility model provides a double-cylinder lifting platform, which includes a chassis, a top frame for supporting the chassis, a scissor fork assembly connecting the chassis and the top frame, a driving device for driving the scissor fork assembly to open and close, and two anti-fall oil cylinders. The two anti-fall oil cylinders are in communication through a pipeline.

[0007] As a further improvement of the utility model, the anti-fall oil cylinder includes a cylinder body, a piston head movably arranged in the cylinder body, and a piston rod connected to the piston head and protruding from the cylinder body. A high-pressure chamber and a low-pressure chamber are formed at both ends of the piston head in the cylinder body. The high-pressure chambers of the two anti-fall oil cylinders are connected through a first pipeline, and the low-pressure chambers of the two anti-fall oil cylinders are connected through a second pipeline.

[0008] As a further improvement of the utility model, the double-cylinder lifting platform further includes an explosion-proof valve, and both ends of the explosion-proof valve are communicated with the first pipeline and the second pipeline respectively.

[0009] As a further improvement of the utility model, two exhaust ports are arranged on the anti-fall oil cylinder, one of the exhaust ports is communicated with the high-pressure chamber, and the other exhaust port is communicated with the low-pressure chamber.

[0010] As a further improvement of the utility model, at least one of the exhaust ports of the two anti-fall oil cylinders is communicated with a pressure induction switch.

[0011] As a further improvement of the present utility model, the anti-falling oil cylinder further includes an oil injection port, and the oil injection port is communicated with one end of the first pipeline close to the anti-falling oil cylinder.

[0012] As a further improvement of the present utility model, the driving device is arranged between the two anti-falling oil cylinders, and the pipeline is bent to bypass the driving device.

[0013] As a further improvement of the present utility model, the scissor fork assembly includes two scissor forks arranged at intervals and a connecting shaft connecting the two scissor forks. The position of one of the anti-falling oil cylinders is higher than the connecting shaft, and the position of the other anti-falling oil cylinder is lower than the connecting shaft.

[0014] As a further improvement of the present utility model, the double-oil-cylinder lifting platform further includes a mounting plate, and the two anti-falling oil cylinders and the driving device are fixed on the mounting plate.

[0015] The beneficial effects of the present utility model are as follows: for the double-oil-cylinder lifting platform of the present utility model, by arranging two anti-falling oil cylinders, the volume of a single oil cylinder can be reduced while achieving the same anti-falling effect, and installation can be realized in a narrow space. Description of the Drawings

[0016] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 is a schematic side structure view of the double-oil-cylinder lifting platform of the present utility model;

[0018] Figure 2 is a schematic three-dimensional structure view of the double-oil-cylinder lifting platform of the present utility model;

[0019] Figure 3 is a schematic structure view of the anti-falling oil cylinder and the pipeline of the double-oil-cylinder lifting platform of the present utility model. Detailed Embodiments

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] As Figures 1 to 3 shown, the double-cylinder lifting platform 100 of the present utility model includes a chassis 1, a top frame 2 for supporting the chassis 1, a scissor assembly 3 connecting the chassis 1 and the top frame 2, a driving device 4 for driving the scissor assembly 3 to open and close, two anti-falling cylinders 5, a mounting plate 6, and an explosion-proof valve 7.

[0024] The chassis 1 is placed on the ground and mainly serves as a support.

[0025] The top frame 2 is located above the chassis 1 and is used to place the items to be lifted.

[0026] The scissor assembly 3 includes two scissor forks 31 arranged at intervals and a connecting shaft 32 connecting the two scissor forks 31. The two scissor forks 31 are arranged at intervals in the horizontal direction. Each scissor fork 31 includes two scissor rods 33. One of the scissor rods 33 is hinged to the top frame 2 and the chassis 1, and the other scissor rod 33 is slidably connected to the top frame 2 and the chassis 1. During the lifting process, the top frame 2 is lifted or lowered relative to the chassis 1 by the sliding of the other scissor fork 31 with the top frame 2 and the chassis 1. However, it is not limited thereto, and there can also be other types of scissor assemblies 3 as long as they can achieve lifting.

[0027] The intersection of the two scissor rods 33 is for the connecting shaft 32 to pass through, so that the two scissor rods 33 can rotate relative to the connecting shaft 32.

[0028] The driving device 4 is fixed on the mounting plate 6 and is used to drive the opening and closing of the scissor fork 31, thereby achieving the lifting effect of the double-cylinder lifting platform 100. Further, the driving device 4 is fixed in the middle of the mounting plate 6. The mounting plate 6 is arranged at a position between the two scissor forks 31.

[0029] The driving device 4 can be a driving motor, a driving cylinder, etc., or other devices, as long as it can achieve the opening and closing of the scissor fork 31.

[0030] The anti-fall oil cylinders 5 are arranged between the top frame 2 and the bottom frame 1. The two anti-fall oil cylinders 5 are fixed on the mounting plate 6 and are located on the same side as the driving device 4. The connecting shaft 32 is arranged on the other side of the mounting plate 6.

[0031] The position of one of the anti-fall oil cylinders 5 is higher than that of the connecting shaft 32, and the position of the other anti-fall oil cylinder 5 is lower than that of the connecting shaft 32. Further, the two anti-fall oil cylinders 5 are arranged diagonally to the two driving devices 4 to achieve better space utilization.

[0032] The two anti-fall oil cylinders 5 communicate through a pipeline 8. Further, the driving device 4 is arranged between the two anti-fall oil cylinders 5, and the pipeline 8 is bent to bypass the driving device 4.

[0033] The anti-fall oil cylinder 5 includes a cylinder body 51, a piston head that is movable in the cylinder body 51, and a piston rod 52 that is connected to the piston head and protrudes from the cylinder body 51. A high-pressure chamber and a low-pressure chamber are formed at both ends of the piston head in the cylinder body 51. The high-pressure chambers of the two anti-fall oil cylinders 5 are connected through a first pipeline 81, and the low-pressure chambers of the two anti-fall oil cylinders 5 are connected through a second pipeline 82. When a braking failure, a lead screw breakage, or an electronic control failure occurs, the anti-fall oil cylinder 5 will lock up, the pressure switch will alarm, and the system will stop. In this case, the double-cylinder lifting platform 100 loses power and cannot move, thereby protecting the double-cylinder lifting platform 100 and avoiding damage to related devices of the top frame 2. By connecting the two anti-fall oil cylinders 5, replacing one anti-fall oil cylinder 5 can save more space and avoid interference with the driving device 4.

[0034] Both ends of the explosion-proof valve 7 are respectively communicated with the first pipeline 81 and the second pipeline 82. The explosion-proof valve 7 can protect the double-cylinder lifting platform 100 from being damaged in case of accidental falling. Since the two anti-fall oil cylinders 5 are connected, by connecting both ends of the explosion-proof valve 7 to the first pipeline 81 and the second pipeline 82 respectively, the effect of protection can be achieved with only one explosion-proof valve 7.

[0035] Each of the anti-falling oil cylinders 5 is provided with two exhaust ports 53 and one oil injection port 54. The exhaust ports 53 are arranged on the cylinder block 51, one of the exhaust ports 53 is communicated with the high-pressure chamber, and the other exhaust port 53 is communicated with the low-pressure chamber.

[0036] At least one of the exhaust ports 53 of the two anti-falling oil cylinders 5 is communicated with a pressure sensing switch 55.

[0037] The oil injection port 54 is communicated with one end of the first pipeline 81 close to the anti-falling oil cylinder 5, so as to realize the effect of injecting oil into the high-pressure chamber or discharging the oil in the high-pressure chamber.

[0038] For the double-oil-cylinder lifting platform 100 of the present utility model, by arranging two anti-falling oil cylinders 5, the volume of a single oil cylinder can be reduced under the condition of achieving the same anti-falling effect, and installation can be realized in a narrow space.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0040] The above-described embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A double-cylinder lifting platform, characterized in that: The double-cylinder lifting platform includes a chassis, a top frame for supporting the chassis, a scissor fork assembly connecting the chassis and the top frame, a driving device for driving the scissor fork assembly to open and close, and two anti-fall cylinders. The two anti-fall cylinders communicate through a pipeline.

2. The double-cylinder lifting platform according to claim 1, characterized in that: The anti-fall cylinder includes a cylinder body, a piston head movable in the cylinder body, and a piston rod connected to the piston head and protruding from the cylinder body. A high-pressure chamber and a low-pressure chamber are formed at both ends of the piston head in the cylinder body. The high-pressure chambers of the two anti-fall cylinders are connected through a first pipeline, and the low-pressure chambers of the two anti-fall cylinders are connected through a second pipeline.

3. The double-cylinder lifting platform according to claim 2, characterized in that: The double-cylinder lifting platform further includes an explosion-proof valve, and both ends of the explosion-proof valve are respectively communicated with the first pipeline and the second pipeline.

4. The double-cylinder lifting platform according to claim 2, characterized in that: Two exhaust ports are provided on the anti-fall cylinder, one exhaust port is communicated with the high-pressure chamber, and the other exhaust port is communicated with the low-pressure chamber.

5. The double-cylinder lifting platform according to claim 4, wherein: At least one of the exhaust ports of the two anti-fall cylinders is communicated with a pressure induction switch.

6. The double-cylinder lifting platform according to claim 2, wherein: The anti-fall cylinder further includes an oil injection port, and the oil injection port is communicated with one end of the first pipeline close to the anti-fall cylinder.

7. The double-cylinder lifting platform according to claim 1, wherein: The driving device is arranged between the two anti-fall cylinders, and the pipeline is bent to bypass the driving device.

8. The double-cylinder lifting platform according to claim 1, wherein: The scissor fork assembly includes two scissor forks arranged at intervals and a connecting shaft connecting the two scissor forks. The position of one of the anti-fall cylinders is higher than the connecting shaft, and the position of the other anti-fall cylinder is lower than the connecting shaft.

9. The double-cylinder lifting platform according to claim 1, characterized in that: The double-cylinder lifting platform further includes a mounting plate, and the two anti-fall cylinders and the driving device are fixed on the mounting plate.

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