Hydraulic cylinder for lifting shaft assembly

Abstract

The utility model relates to the technical field of hydraulic equipment, in particular to a hydraulic cylinder for a lifting shaft component, which comprises a cylinder barrel, a piston rod, a cylinder bottom, a cylinder head, a piston and a connecting rod, the cylinder bottom and the cylinder head are respectively arranged at the lower end and the upper end of the cylinder barrel, the piston is arranged in the cylinder barrel, and at least part of the lower end of the piston rod extends into the cylinder barrel and is fixedly connected with the piston. The connecting rod is arranged between the cylinder bottom and the cylinder head; the hydraulic cylinder further comprises an adjusting screw; by means of the hydraulic cylinder, the bottom of the hydraulic cylinder can be leveled, and the application range of the hydraulic cylinder is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment, and specifically relates to a hydraulic cylinder for a shaft lifting assembly. Background Art

[0002] The hydraulic lifting shaft assembly is a device used to load goods, and is often called a lifting mechanism or lifting equipment. The main power of the device is provided by a hydraulic cylinder, and the lifting and lowering of the goods can be achieved through automatic or manual control. Lifting shafts are widely used in factories, warehouses, supermarkets, parking lots and other places to facilitate people to carry goods and improve work efficiency. At present, when using a hydraulic cylinder to provide power lifting force, the usual practice is to flatten the bottom of the hydraulic cylinder so that the piston rod of the hydraulic cylinder and the rising direction of the lifted object can reach the ideal coaxiality, making the thrust of the hydraulic cylinder more efficient and controllable. However, in actual operation, due to changes in the operating environment, especially when facing an uneven operating table, the bottom of the hydraulic cylinder cannot be completely flat, that is, the piston rod of the hydraulic cylinder and the rising direction of the lifted object are difficult to achieve the ideal coaxiality, which will affect the scope of application of the hydraulic cylinder. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a hydraulic cylinder for a shaft lifting assembly, which can enable the hydraulic cylinder to have a bottom leveling capability and improve the application range of the hydraulic cylinder.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic cylinder for a lifting shaft assembly, comprising a cylinder barrel, a piston rod, a cylinder bottom, a cylinder head, a piston and a connecting rod, the cylinder bottom and the cylinder head are respectively arranged at the lower end and the upper end of the cylinder barrel, the piston is arranged in the cylinder barrel, the lower end of the piston rod at least partially extends into the cylinder barrel and is fixedly connected to the piston, the connecting rod is arranged between the cylinder bottom and the cylinder head, and the hydraulic cylinder also includes an adjusting screw; the adjusting screw is movably arranged at the lower end of the cylinder bottom.

[0005] Preferably, the adjusting screw is threadedly connected to the cylinder bottom.

[0006] Preferably, a screw hole is provided at the lower end of the cylinder bottom; and the adjusting screw is arranged in the screw hole.

[0007] Preferably, the axis of the screw hole is parallel to the axis of the cylinder.

[0008] Preferably, there are a plurality of adjusting screws, and the plurality of adjusting screws are evenly distributed around the axis of the cylinder.

[0009] Preferably, an anti-slip groove is provided on the nut of the adjusting screw.

[0010] Preferably, the connecting rod is threadedly connected to the cylinder bottom and the cylinder head.

[0011] Preferably, the screw hole is a blind hole.

[0012] Preferably, the depth of the screw hole is not less than the length of the adjusting screw.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: by opening a screw hole at the bottom end of the cylinder bottom, a leveling screw is provided in the screw hole, and by rotating the adjusting screw, the nut of the adjusting screw can be made to protrude from the bottom end surface of the cylinder bottom or sink into the screw hole, so that the hydraulic cylinder has the ability of leveling, can cope with uneven operating tables, and makes it difficult for the piston rod of the hydraulic cylinder to achieve ideal coaxiality with the rising direction of the lifted object, thereby ultimately improving the application range of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a longitudinal cross section of a hydraulic cylinder of the utility model;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the hydraulic cylinder of the utility model;

[0016] Figure 3 This is a schematic diagram of the adjusting screw structure of the utility model.

[0017] In the figure: 1 cylinder barrel, 2 piston rod, 3 cylinder bottom, 4 cylinder head, 5 piston, 6 cylinder cover, 7 adjusting screw, 8 connecting rod, 31 oil inlet, 32 screw hole, 41 oil outlet. DETAILED DESCRIPTION

[0018] The following describes the specific implementation of the utility model in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the utility model. Although the utility model is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, rather than limiting the scope of the utility model.

[0019] Specific embodiment 1: Please refer to Figure 1-3A hydraulic cylinder for a shaft lifting assembly comprises: a cylinder barrel 1, a piston rod 2, a cylinder bottom 3, a cylinder head 4, a piston 5, a cylinder cover 6, an adjusting screw 7 and a connecting rod 8. The cylinder bottom 3 is arranged at the lower end of the cylinder barrel 1, and the cylinder head 4 is arranged at the upper end of the cylinder barrel 1 so that the upper and lower ends of the cylinder barrel 1 are both closed. An oil inlet 31 is provided on the cylinder bottom 3, and an oil outlet 41 is provided on the cylinder head 4; the piston 5 is slidably arranged in the cylinder barrel 1 to separate the inner space of the cylinder barrel 1 into a front oil chamber and a rear oil chamber that are independent of each other, the oil inlet 31 is communicated with the rear oil chamber, and the oil outlet 41 is communicated with the front oil chamber. Filling oil into the rear oil chamber through the oil inlet can extend the piston rod 2, and the oil outlet can be filled into the front oil chamber through the oil outlet. Filling with oil can retract the piston rod 2; the lower end of the piston rod 2 extends into the cylinder barrel 1 and is fixedly connected to the piston 5, and the upper end of the piston rod 2 extends outside the cylinder barrel 1; the cylinder cover 6 is fixedly arranged on the upper side of the cylinder head 4 and is slidably connected to the outer periphery of the piston rod 2; four connecting rods 8 are provided, and the cylinder bottom 3 and the cylinder head 4 are connected and fixed by four connecting rods 8 arranged therebetween, and the cylinder bottom 3 and the cylinder head 4 are both threadedly connected to the connecting rods 8; the four connecting rods 8 are evenly distributed around the axis of the cylinder barrel 1; four adjusting screws 7 are provided, and the four adjusting screws 7 are movably arranged at the lower end of the cylinder bottom 3 to adjust the horizontality of the main plane of the bottom end of the cylinder bottom 3.

[0020] Furthermore, the bottom end of the cylinder bottom 3 is provided with screw holes 32 in number corresponding to the adjusting screws 7, the opening direction of the screw holes 32 is parallel to the axis of the cylinder barrel 1, the screw holes 32 are blind holes, and the adjusting screws 7 are arranged in the screw holes 32; in the present embodiment, the adjusting screws 7 are threadedly connected to the cylinder bottom 3, and the nut of the adjusting screws 7 can be made to protrude from the bottom end surface of the cylinder bottom 3 or be immersed in the screw holes 32 by rotating the adjusting screws 7. Such an arrangement enables the hydraulic cylinder to have the ability of leveling; in order for the adjusting screws 7 to be immersed in the screw holes 32, the depth of the screw holes 32 is greater than the length of the adjusting screws 7.

[0021] In other embodiments, the number of the adjusting screws 7 can be increased or decreased according to actual conditions.

[0022] In this embodiment, four adjusting screws 7 are evenly distributed around the axis of the cylinder 1, which can improve the leveling performance.

[0023] In addition, in order to increase the anti-skid performance, the nut of the adjusting screw 7 is also subjected to anti-skid treatment. During implementation, a plurality of intersecting anti-skid grooves can be provided on the nut of the adjusting screw 7 .

[0024] Through this technical solution, a screw hole is opened at the bottom end of the cylinder bottom, and a leveling screw is provided in the screw hole. By rotating the adjusting screw, the nut of the adjusting screw can be made to protrude from the bottom end surface of the cylinder bottom or sink into the screw hole, so that the hydraulic cylinder has the ability of leveling and can cope with uneven operating tables, making it difficult for the piston rod of the hydraulic cylinder to achieve ideal coaxiality with the rising direction of the lifted object, thereby ultimately improving the application range of the hydraulic cylinder.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder for a shaft lifting assembly, comprising a cylinder barrel (1), a piston rod (2), a cylinder bottom (3), a cylinder head (4), a piston (5) and a connecting rod (8), wherein the cylinder bottom (3) and the cylinder head (4) are respectively arranged at the lower end and the upper end of the cylinder barrel (1), the piston (5) is arranged in the cylinder barrel (1), the lower end of the piston rod (2) at least partially extends into the cylinder barrel (1) and is fixedly connected to the piston (5), and the connecting rod (8) is arranged between the cylinder bottom (3) and the cylinder head (4), characterized in that: The hydraulic cylinder further comprises an adjusting screw (7); the adjusting screw (7) is movably arranged at the lower end of the cylinder bottom (3).

2. The hydraulic cylinder for the shaft lifting assembly according to claim 1, characterized in that: The adjusting screw (7) is threadedly connected to the cylinder bottom (3).

3. The hydraulic cylinder for the shaft lifting assembly according to claim 1, characterized in that: A screw hole (32) is provided at the lower end of the cylinder bottom (3); the adjusting screw (7) is arranged in the screw hole (32).

4. The hydraulic cylinder for the shaft lifting assembly according to claim 3, characterized in that: The axis of the screw hole (32) is parallel to the axis of the cylinder barrel (1).

5. The hydraulic cylinder for the shaft lifting assembly according to claim 1, characterized in that: A plurality of adjusting screws (7) are provided; the plurality of adjusting screws (7) are evenly distributed around the axis of the cylinder barrel (1).

6. The hydraulic cylinder for the shaft lifting assembly according to claim 1, characterized in that: The nut of the adjusting screw (7) is provided with an anti-slip groove.

7. The hydraulic cylinder for the shaft lifting assembly according to claim 1, characterized in that: The connecting rod (8) is threadedly connected to the cylinder bottom (3) and the cylinder head (4).

8. The hydraulic cylinder for the shaft lifting assembly according to claim 3, characterized in that: The screw hole (32) is a blind hole.

9. The hydraulic cylinder for the shaft lifting assembly according to claim 3, characterized in that: The depth of the screw hole (32) is not less than the length of the adjusting screw (7).

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