Double-column hydraulic oil cylinder

Abstract

The utility model discloses a hydraulic oil cylinder, belongs to the technical field of hydraulic equipment, and particularly relates to a double-column hydraulic oil cylinder which comprises a cylinder body, a piston rod, a rear cover, a piston and a front cover. The front cover is fixedly mounted at the front end of the cylinder body; one end of the piston rod is fixedly connected with the piston, the other end of the piston rod penetrates through the front cover and extends to the outside, and the piston rod moves along with the piston; the rear cover is fixedly mounted at the rear end of the body; the double-column hydraulic oil cylinder can achieve precise control and motion stability, meanwhile has high motion control capacity and precision, and can accurately control the motion speed and stroke of a machine. Meanwhile, the double-column hydraulic oil cylinder is stable in movement and free of transmission gaps, so that the stability and the safety of mechanical work can be improved, and noise generated during work is reduced at the same time.

Description

Technical Field

[0001] The utility model discloses a hydraulic oil cylinder, belongs to the technical field of hydraulic equipment, and specifically relates to a double-column hydraulic oil cylinder. Background Art

[0002] The double-column hydraulic cylinder is a common actuator in the hydraulic transmission system. Its functions are mainly reflected in the following aspects:

[0003] A two-column hydraulic cylinder converts hydraulic energy into mechanical energy. The hydraulic oil pressure drives the piston in linear reciprocating motion, thereby completing various mechanical operations. This energy conversion process has led to its widespread use in lifts. The cylinder's structure is relatively simple, consisting primarily of a piston, cylinder body, piston rod, cylinder head, and seals. This simplicity makes it easy to manufacture, install, and maintain. Furthermore, maintenance is relatively simple, reducing maintenance costs for mechanical systems.

[0004] When the double-column hydraulic cylinder in the prior art works in some large-scale working places, the working movement is not smooth due to the existence of transmission clearance, and noise is generated, thereby reducing the stability and safety of the work. Utility Model Content

[0005] The purpose of the utility model is to provide a double-column hydraulic cylinder to solve the above-mentioned problems.

[0006] Technical solution: A double-column hydraulic cylinder, comprising: a cylinder body, a piston rod, a rear cover, a piston and a front cover;

[0007] The piston is slidably installed in the cylinder body; the front cover is fixedly installed at the front end of the cylinder body; one end of the piston rod is fixedly connected to the piston, and the other end extends to the outside through the front cover, and the piston rod moves with the piston; the rear cover is fixedly installed at the rear end of the cylinder body, and the rear cover is provided with inlet and outlet oil holes connected to the interior of the cylinder body, and hydraulic oil flows in the oil holes to drive the piston to move in the cylinder body.

[0008] In a further embodiment, the oil inlet and outlet holes are formed by three-way grooves.

[0009] In a further embodiment, the piston is provided with a mounting groove, one end of the piston rod is located in the mounting groove, and a wire retaining ring is provided between the piston rod and the mounting groove.

[0010] In a further embodiment, a sealing ring and an O-ring are provided on the outer wall of the piston, and a first supporting ring is provided between the outer wall of the piston and the inner wall of the cylinder.

[0011] In a further embodiment, a second supporting ring and a dust ring are provided between the piston rod and the front cover.

[0012] In a further embodiment, a sound-absorbing hole is provided on one side of the front cover, and a sound-absorbing plate and an elastic retaining ring are provided in the sound-absorbing hole.

[0013] Beneficial Effects: This dual-column hydraulic cylinder achieves precise control and stable motion, while also offering high motion control capabilities and accuracy, enabling precise control of the machine's speed and stroke. Furthermore, the dual-column hydraulic cylinder offers smooth motion with no transmission backlash, thereby improving the machine's operational stability and safety while also reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the present utility model.

[0015] Figure 2 It is a partial schematic diagram of the present utility model.

[0016] Figure numerals: cylinder body 1, piston rod 2, rear cover 3, piston 4, front cover 5, oil inlet and outlet holes 6, wire retaining ring 7, sealing ring 8, O-ring 9, first supporting ring 10, second supporting ring 11, dust ring 12, silencer 13, elastic retaining ring 14. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] 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.

[0020] A double-column hydraulic cylinder comprises a cylinder body 1, a piston rod 2, a rear cover 3, a piston 4, and a front cover 5.

[0021] In one embodiment, Figure 1 As shown, the piston 4 is slidably installed in the cylinder body 1; the front cover 5 is fixedly installed at the front end of the cylinder body 1; one end of the piston rod 2 is fixedly connected to the piston 4, and the other end extends to the outside through the front cover 5, and the piston rod 2 moves with the piston 4; the rear cover 3 is fixedly installed at the rear end of the cylinder body, and the rear cover 3 is provided with an oil inlet and outlet hole 6 connected to the inside of the cylinder body 1, and hydraulic oil flows in the oil hole to drive the piston 4 to move in the cylinder body 1.

[0022] In one embodiment, Figure 1 As shown, the oil inlet and outlet holes 6 are formed by three-way grooves.

[0023] In one embodiment, Figure 1 As shown, the piston 4 is provided with a mounting groove, one end of the piston rod 2 is located in the mounting groove, and a wire retaining ring 7 is provided between the piston rod 2 and the mounting groove.

[0024] In one embodiment, Figure 1 As shown, a sealing ring 8 and an O-ring 9 are provided on the outer wall of the piston 4 , and a first supporting ring 10 is provided between the outer wall of the piston 4 and the inner wall of the cylinder body 1 .

[0025] In one embodiment, Figure 1 As shown, a second supporting ring 11 and a dust ring 12 are provided between the piston rod 2 and the front cover 5 .

[0026] In one embodiment, Figure 2 As shown, a silencer hole is provided on one side of the front cover 5 , and a silencer plate 13 and an elastic retaining ring 14 are provided in the silencer hole.

[0027] Working principle: When the utility model is working, first install the double-column hydraulic cylinder on the working area, and then connect the oil inlet and outlet holes 6 to the oil tank. The hydraulic oil enters the cylinder body 1 through the oil inlet and outlet holes 6. At this time, the pressure pushes the piston 4 to move, thereby driving the piston rod 2 to move outward, thereby realizing the extension work. When the hydraulic oil flows out through the oil inlet and outlet holes 6, the pressure becomes smaller, so that the piston 4 returns to its position, thereby driving the piston rod 2 to move inward, thereby realizing the retraction work.

[0028] 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 double-column hydraulic cylinder, characterized in that: The hydraulic cylinder comprises: a cylinder body, a piston rod, a rear cover, a piston and a front cover; The piston is slidably installed in the cylinder body; the front cover is fixedly installed at the front end of the cylinder body; one end of the piston rod is fixedly connected to the piston, and the other end extends to the outside through the front cover, and the piston rod moves with the piston; the rear cover is fixedly installed at the rear end of the cylinder body, and the rear cover is provided with inlet and outlet oil holes connected to the interior of the cylinder body, and hydraulic oil flows in the oil holes to drive the piston to move in the cylinder body.

2. A double-column hydraulic cylinder according to claim 1, characterized in that: The oil inlet and outlet holes are formed by three-way grooves.

3. A double-column hydraulic cylinder according to claim 1, characterized in that: The piston is provided with a mounting groove, one end of the piston rod is located in the mounting groove, and a wire retaining ring is provided between the piston rod and the mounting groove.

4. A double-column hydraulic cylinder according to claim 1, characterized in that: A sealing ring and an O-ring are provided on the outer wall of the piston, and a first supporting ring is provided between the outer wall of the piston and the inner wall of the cylinder.

5. The double-column hydraulic cylinder according to claim 1, characterized in that: A second supporting ring and a dustproof ring are provided between the piston rod and the front cover.

6. A double-column hydraulic cylinder according to claim 1, characterized in that: A silencer hole is provided on one side of the front cover, and a silencer sheet and an elastic retaining ring are provided in the silencer hole.

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