Four-column oil cylinder for automobile lifting machine

Abstract

The utility model discloses a four-column oil cylinder, belongs to the technical field of hydraulic oil cylinders, and particularly relates to a four-column oil cylinder for an automobile lifting machine, which comprises a cylinder body, a front cover, a connecting cover, a piston rod assembly and a connecting block, the front cover is fixedly installed in the front end of the cylinder body, the connecting cover is fixedly installed at the rear end of the cylinder body, the piston rod assembly is installed in the cylinder body so as to move in the cylinder body, and the connecting block is fixedly connected with the piston rod assembly so as to move along with the piston rod assembly. The hydraulic oil cylinder is adopted for supporting the automobile lifting machine, compared with traditional motor transmission, the supporting performance is better, and meanwhile large force can be provided in a small size; the hydraulic oil cylinder is connected with the external equipment through the connecting block, so that damage to the movable rod can be reduced, the service life of the hydraulic oil cylinder is prolonged, and meanwhile the hydraulic oil cylinder and the external equipment can be conveniently disassembled during later maintenance.

Description

Technical Field

[0001] The utility model discloses a four-column oil cylinder, belonging to the technical field of hydraulic cylinders, and specifically relates to a four-column oil cylinder for an automobile lift. Background Art

[0002] The main function of an automobile lift is to lift an automobile during the automobile maintenance process. By manual operation, the automobile is lifted to a certain height, which is convenient for automobile maintenance. The lift plays a very important role in automobile maintenance and repair. Now, all repair factories are equipped with lifts, which are essential equipment for automobile repair factories.

[0003] Traditional automobile lifts are lifted by hydraulic cylinders or motors. The motor drive has the problem of weak load-bearing capacity, while hydraulic cylinders usually directly connect the piston rod with external equipment. After long-term operation, this will accelerate the service life of the piston rod and reduce the telescopic accuracy of the piston rod at the same time. Content of the Utility Model

[0004] Purpose of the utility model: To provide a four-column oil cylinder for an automobile lift to solve the above-mentioned problems.

[0005] Technical solution: A four-column oil cylinder for an automobile lift, the four-column oil cylinder includes: a cylinder block, a front cover, a connecting cover, a piston rod assembly and a connecting block;

[0006] The front cover is fixedly installed inside the front end of the cylinder block, the connecting cover is fixedly installed at the rear end of the cylinder block, the piston rod assembly is installed inside the cylinder block to move inside the cylinder block, and the connecting block is fixedly connected to the piston rod assembly to move along with the piston rod assembly.

[0007] In a further embodiment, the piston rod assembly includes a piston and a piston rod;

[0008] The piston is located inside the cylinder block, one end of the piston rod is fixedly connected to the piston, and the other end passes through the front cover to the outside of the cylinder block and is fixedly connected to the connecting block.

[0009] In a further embodiment, a screw cover is provided inside the piston, the screw cover is fixedly connected to both the piston and the end of the piston rod at the same time, the piston rod is fixedly connected to the piston through a key, and an O-ring is provided between the piston rod and the piston.

[0010] In a further embodiment, the piston rod is connected to the front cover through a lubricating bearing, and a sealing ring and a dust-proof ring are provided between the piston rod and the front cover.

[0011] In a further embodiment, a snap ring is provided between the piston and the screw cover.

[0012] In a further embodiment, a support ring and a sealing ring are provided between the piston and the inner wall of the cylinder block.

[0013] In a further embodiment, an O-ring is provided between the front cover and the inner wall of the cylinder block.

[0014] In a further embodiment, the connecting cover and the connecting block are provided with mounting holes.

[0015] In a further embodiment, an oil inlet and an oil outlet are provided on the outer side of the cylinder block

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model uses a hydraulic cylinder to support the vehicle lift. Compared with the traditional motor drive, it has better support performance and can provide greater force within a smaller volume.

[0018] 2. The utility model uses a connecting block to connect the hydraulic cylinder with external equipment, which can reduce the damage to the rod, thereby improving the service life of the hydraulic cylinder. At the same time, during later maintenance, it is convenient to disassemble the hydraulic cylinder from the external equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of the utility model.

[0020] Figure 2 is a front view of the utility model.

[0021] Reference numerals: cylinder block 1, front cover 2, connecting cover 3, piston rod assembly 4, connecting block 5, piston 6, piston rod 7, screw cap 8, key 9, O-ring 10, lubricating bearing 11, sealing ring 12, dust ring 13, snap ring 14, support ring 15, mounting hole 16, oil inlet 17, oil outlet 18. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying 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 making creative efforts based on the embodiments of the present utility model belong to the scope of protection of the present utility model.

[0023] 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 understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" 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.

[0025] A four-column oil cylinder for an automobile lift, comprising: a cylinder body 1, a front cover 2, a connecting cover 3, a piston rod assembly 4, and a connecting block 5.

[0026] In one embodiment, as Figures 1 to 2 shown, the front cover 2 is fixedly installed inside the front end of the cylinder body 1, the connecting cover 3 is fixedly installed at the rear end of the cylinder body 1, the piston rod assembly 4 is installed inside the cylinder body 1 to move inside the cylinder body 1, and the connecting block 5 is fixedly connected to the piston rod assembly 4 to move along with the piston rod assembly 4.

[0027] In one embodiment, as Figures 1 to 2 shown, the piston rod assembly 4 includes a piston 6 and a piston rod 7;

[0028] The piston 6 is located inside the cylinder body 1. One end of the piston rod 7 is fixedly connected to the piston 6, and the other end passes through the front cover 2 to the outside of the cylinder body 1 and is fixedly connected to the connecting block 5.

[0029] In one embodiment, as Figures 1 to 2 shown, a screw cap 8 is provided inside the piston 6. The screw cap 8 is simultaneously fixedly connected to the piston 6 and the end of the piston rod 7. The piston rod 7 and the piston 6 are fixedly connected by a key 9, and an O-ring 10 is provided between the piston rod 7 and the piston 6.

[0030] In one embodiment, as Figures 1 to 2 shown, the piston rod 7 is connected to the front cover 2 through a lubricating bearing 11, and a sealing ring 12 and a dust-proof ring 13 are provided between the piston rod 7 and the front cover 2.

[0031] In one embodiment, as Figures 1 to 2 shown, a snap ring 14 is provided between the piston 6 and the screw cap 8.

[0032] In one embodiment, as Figures 1 to 2 shown, a support ring 15 and a sealing ring 12 are provided between the piston 6 and the inner wall of the cylinder block 1.

[0033] In one embodiment, as Figures 1 to 2 shown, an O-ring 10 is provided between the front cover 2 and the inner wall of the cylinder block 1.

[0034] In one embodiment, as Figures 1 to 2 shown, the connecting cover 3 and the connecting block 5 are provided with a mounting hole 16.

[0035] In one embodiment, as Figures 1 to 2 shown, an oil inlet 17 and an oil outlet 18 are provided on the outer side of the cylinder block 1

[0036] Working principle: When the present utility model is working, first, the hydraulic cylinder is installed on the working area through the connecting cover 3, and the connecting block 5 is connected to the outside. Secondly, when working, hydraulic oil enters through the oil inlet 17, thereby pushing the piston 6 to move outwards, thereby driving the piston rod 7 to move outwards through the key 9. At the same time, the piston rod 7 moves outwards in the front cover 2 through the lubricating bearing 11, thereby driving the connecting block 5 to move and driving the external equipment to move to realize the lifting of the vehicle lift. When it needs to be lowered, the hydraulic oil in the cylinder block 1 is discharged through the oil outlet 18, so that the piston 6 loses the supporting force, and thus the piston 6 drives the piston rod 7 to retract to realize the lowering of the vehicle lift.

[0037] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A four-column oil cylinder for an automotive lift, characterized in that, The four-column oil cylinder includes: a cylinder block, a front cover, a connecting cover, a piston rod assembly, and a connecting block; The front cover is fixedly installed inside the front end of the cylinder block, the connecting cover is fixedly installed at the rear end of the cylinder block, the piston rod assembly is installed inside the cylinder block to move inside the cylinder block, and the connecting block is fixedly connected to the piston rod assembly to move along with the piston rod assembly.

2. The four-column oil cylinder for an automotive lift according to claim 1, characterized in that, The piston rod assembly includes a piston and a piston rod; The piston is located inside the cylinder block, one end of the piston rod is fixedly connected to the piston, and the other end passes through the front cover to the outside of the cylinder block and is fixedly connected to the connecting block.

3. The four-column oil cylinder for an automotive lift according to claim 2, wherein A screw cap is provided inside the piston, the screw cap is fixedly connected to both the piston and the end of the piston rod at the same time, the piston rod and the piston are fixedly connected by a key, and an O-ring is provided between the piston rod and the piston.

4. The four-column oil cylinder for an automotive lift according to claim 2, characterized in that, The piston rod is connected to the front cover through a lubricating bearing, and a sealing ring and a dust-proof ring are provided between the piston rod and the front cover.

5. The four-column oil cylinder for a vehicle lift according to claim 3, wherein, A snap ring is provided between the piston and the screw cap.

6. The four-column oil cylinder for a car lift according to claim 2, characterized in that: A support ring and a sealing ring are provided between the piston and the inner wall of the cylinder block.

7. The four-column oil cylinder for a vehicle lift according to claim 1, characterized in that, An O-ring is provided between the front cover and the inner wall of the cylinder block.

8. The four-column oil cylinder for a vehicle lift according to claim 1, characterized in that, The connecting cover and the connecting block are provided with mounting holes.

9. The four-column oil cylinder for a vehicle lift according to claim 1, characterized in that, An oil inlet and an oil outlet are provided on the outer side of the cylinder block.

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