Oil cylinder structure for rear point support

Abstract

The utility model discloses a rear fulcrum oil cylinder, belongs to the technical field of oil cylinder structures, and particularly relates to an oil cylinder structure for rear point supporting, which comprises a piston, a cylinder body, a piston rod, a hanging ring and a front cover. One end of the cylinder body is in an opening shape, the front cover is fixedly installed in the opening in one end of the cylinder body, the piston is installed in the cylinder body in a sliding mode, the piston is installed in the front cover in a sliding mode, one end of the piston is located in the cylinder body and fixedly connected with the piston, and the other end of the piston is located outside the cylinder body. The lifting ring is fixedly mounted at the other end of the piston rod; according to the utility model, the bearing capacity of the equipment is improved, the device is particularly suitable for large-tonnage equipment, the gravity center of the equipment is balanced, the equipment is prevented from inclining or overturning, and the overall stability is enhanced; meanwhile, as the action position of the supporting force is behind the equipment, the length and the size of the oil cylinder can be shortened through the rear-point supporting oil cylinder, compact design is facilitated, and the device is particularly suitable for application occasions with limited space.

Description

Technical Field

[0001] The utility model discloses a rear fulcrum oil cylinder, belongs to the technical field of oil cylinder structures, and particularly relates to an oil cylinder structure used for rear point support. Background Art

[0002] A rear support cylinder (also called a rear pivot cylinder) is a type of cylinder commonly used in construction machinery, lifting equipment, and hydraulic systems. Its characteristic is that the cylinder's force application point is located at the equipment's rear support point. This design is typically used to provide stable support to ensure that mechanical equipment maintains balance or stability during operation.

[0003] Rear support cylinders are used in lifting equipment such as cranes and hoists. These equipment typically use rear support cylinders to maintain stability, prevent tilting, and ensure sufficient support during lifting. Construction machinery such as excavators and bulldozers use rear support cylinders to ensure the rear support points can effectively withstand the workload during operation. Hydraulic platforms and lifts also use rear support cylinders to provide the necessary rear support, ensuring platform stability and reliability.

[0004] The prior art rear support cylinders typically require more components and a complex design, resulting in high manufacturing and installation costs, which can be even more expensive for custom-designed equipment. Utility Model Content

[0005] Purpose of the utility model: to provide a cylinder structure for rear point support to solve the above-mentioned problems.

[0006] Technical solution: A cylinder structure for rear point support, including: a piston, a cylinder body, a piston rod, a lifting ring and a front cover;

[0007] One end of the cylinder body is open, the front cover is fixedly installed in the opening at one end of the cylinder body, the piston is slidably installed in the cylinder body, the piston is slidably installed in the front cover and one end is located in the cylinder body and fixedly connected to the piston, and the other end is located outside the cylinder body, and the lifting ring is fixedly installed on the other end of the piston rod.

[0008] In a further embodiment, a connecting ring is provided at the other end of the cylinder body, and a lubricating bearing is provided inside the connecting ring.

[0009] In a further embodiment, a spherical bearing is provided in the lifting ring, the spherical bearing is fixed in the lifting ring through an elastic retaining ring, and a fastening screw is provided on the lifting ring.

[0010] In a further embodiment, a through hole is opened on the piston, and a steel ball is provided at the through hole where the piston contacts the piston rod, and the steel ball is fixed by a fastening screw.

[0011] In a further embodiment, an oil inlet valve and an oil outlet valve communicating with each other are provided on the outside of the cylinder body.

[0012] In a further embodiment, an O-ring and a retaining ring are provided between the piston and the piston rod.

[0013] In a further embodiment, a sealing ring, a retaining ring and a supporting ring are provided between the piston and the cylinder body.

[0014] In a further embodiment, a lubricating bearing, a buffer ring, a dust ring and a sealing ring are provided between the piston rod and the front cover.

[0015] In a further embodiment, an O-ring and a dumbbell ring are provided between the front cover and the cylinder body.

[0016] Beneficial effects: The utility model places the supporting cylinder at the rear of the equipment, so that the supporting force can act more concentratedly on the chassis or supporting legs of the equipment, thereby improving the carrying capacity of the equipment. It is especially suitable for large-tonnage equipment, helps to balance the center of gravity of the equipment, avoids the equipment from tilting or overturning, and enhances the overall stability. At the same time, since the supporting force acts at the rear of the equipment, the rear point supporting cylinder can shorten the length and size of the cylinder, which is conducive to compact design and is especially suitable for applications with limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the present utility model.

[0018] Figure 2 It is a schematic diagram of the present utility model.

[0019] Figure numerals: piston 1, cylinder 2, piston rod 3, lifting ring 4, front cover 5, connecting ring 6, lubricating bearing 7, spherical bearing 8, retaining ring 9, fastening screw 10, steel ball 11, oil inlet valve 12, oil outlet valve 13, O-ring 14, sealing ring 16, support ring 17, buffer ring 18, dust ring 19, dumbbell ring 20. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] A cylinder structure for rear point support includes: a piston 1, a cylinder body 2, a piston rod 3, a lifting ring 4, and a front cover 5.

[0024] In one embodiment, Figures 1 to 2 As shown, one end of the cylinder body 2 is open, the front cover 5 is fixedly installed in the opening at one end of the cylinder body 2, the piston 1 is slidably installed in the cylinder body 2, the piston 1 is slidably installed in the front cover 5 and one end is located in the cylinder body 2 and fixedly connected to the piston 1, and the other end is located outside the cylinder body 2, and the lifting ring 4 is fixedly installed on the other end of the piston rod 3.

[0025] In one embodiment, Figures 1 to 2 As shown, a connecting ring 6 is provided at the other end of the cylinder body 2 , and a lubricating bearing 7 is provided inside the connecting ring 6 .

[0026] In one embodiment, Figures 1 to 2 As shown, a spherical bearing 8 is provided in the lifting ring 4 , and the spherical bearing 8 is fixed in the lifting ring 4 through an elastic retaining ring 9 . A fastening screw 10 is provided on the lifting ring 4 .

[0027] In one embodiment, Figures 1 to 2 As shown, a through hole is opened on the piston 1 , and a steel ball 11 is provided at the through hole where the piston 1 contacts the piston rod 3 , and the steel ball 11 is fixed by a fastening screw 10 .

[0028] In one embodiment, Figures 1 to 2 As shown, an oil inlet valve 12 and an oil outlet valve 13 are provided on the outside of the cylinder body 2 to communicate with each other.

[0029] In one embodiment, Figures 1 to 2 As shown, an O-ring 14 and a retaining ring 9 are provided between the piston 1 and the piston rod 3 .

[0030] In one embodiment, Figures 1 to 2 As shown, a sealing ring 16 , a retaining ring 9 and a supporting ring 17 are provided between the piston 1 and the cylinder body 2 .

[0031] In one embodiment, Figures 1 to 2 As shown, a lubricating bearing 7, a buffer ring 18, a dust ring 19 and a sealing ring 16 are provided between the piston rod 3 and the front cover 5.

[0032] In one embodiment, Figures 1 to 2 As shown, an O-ring 14 and a dumbbell ring 20 are provided between the front cover 5 and the cylinder body 2 .

[0033] Working principle: When the utility model is working, first the connecting ring 6 and the lifting ring 4 are installed in the working area through the lubricating bearing 7 and the spherical bearing 8 respectively, and the oil inlet valve 12 and the oil outlet valve 13 are connected to the oil tank. When working, first the hydraulic oil enters the cylinder body 2 through the oil inlet valve 12. As the hydraulic oil increases, the piston 1 is pushed to move, thereby driving the piston rod 3 to move, so that the piston rod 3 moves outward. When returning to its position, the hydraulic oil flows out through the oil outlet valve 13. At this time, there is no pressure in the cylinder body 2, so that the piston 1 drives the piston rod 3 to return to its position.

[0034] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A cylinder structure for rear point support, characterized in that: The oil cylinder structure includes: a piston, a cylinder body, a piston rod, a lifting ring and a front cover; One end of the cylinder body is open, the front cover is fixedly installed in the opening at one end of the cylinder body, the piston is slidably installed in the cylinder body, the piston is slidably installed in the front cover and one end is located in the cylinder body and fixedly connected to the piston, and the other end is located outside the cylinder body, and the lifting ring is fixedly installed on the other end of the piston rod.

2. The oil cylinder structure for rear point support according to claim 1, characterized in that: A connecting ring is provided at the other end of the cylinder body, and a lubricating bearing is provided in the connecting ring.

3. The oil cylinder structure for rear point support according to claim 1, characterized in that: A joint bearing is arranged in the lifting ring, and the joint bearing is fixed in the lifting ring through an elastic retaining ring. A fastening screw is arranged on the lifting ring.

4. The oil cylinder structure for rear point support according to claim 1, characterized in that: A through hole is formed on the piston, and a steel ball is provided at the through hole where the piston contacts the piston rod, and the steel ball is fixed by a fastening screw.

5. The oil cylinder structure for rear point support according to claim 1, characterized in that: An oil inlet valve and an oil outlet valve are provided on the outside of the cylinder body.

6. The oil cylinder structure for rear point support according to claim 1, characterized in that: An O-ring and a retaining ring are provided between the piston and the piston rod.

7. The oil cylinder structure for rear point support according to claim 1, characterized in that: A sealing ring, a retaining ring and a supporting ring are provided between the piston and the cylinder body.

8. The oil cylinder structure for rear point support according to claim 1, characterized in that: A lubricating bearing, a buffer ring, a dust ring and a sealing ring are provided between the piston rod and the front cover.

9. The oil cylinder structure for rear point support according to claim 1, characterized in that: An O-ring and a dumbbell ring are provided between the front cover and the cylinder body.

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