Split type oil cylinder

Abstract

The split type oil cylinder comprises a cylinder bottom and an end cover which are split, the cylinder bottom and the end cover are connected to form an inner cavity, a cylinder barrel is arranged in the inner cavity, the cylinder barrel is clamped by the cylinder bottom and the end cover, a piston and a piston rod are arranged in the cylinder barrel, a cylinder bottom oil port communicated with the cavity is formed in the cylinder bottom, and a piston rod is arranged in the piston rod. The end cover is provided with an end cover oil port communicated with the cavity, and the cylinder bottom and the end cover are fixedly connected through an axially-arranged connecting piece. By means of the mode, according to the split type oil cylinder, the cylinder barrel is positioned through the cylinder bottom and the end cover which are assembled, deformation caused by welding of the cylinder barrel is avoided, the whole part can be detached and replaced, the structure is simple, and installation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the hydraulic field, in particular to a split oil cylinder. Background Art

[0002] Conventional oil cylinders are mainly composed of a piston, a guide sleeve, a piston rod and a cylinder weldment, wherein the cylinder weldment is composed of a cylinder barrel and a cylinder bottom welded together, and the guide sleeve and the cylinder barrel are connected by threads.

[0003] In existing products, the cylinder barrel is first processed and then welded to the cylinder bottom, and then assembled with the piston and guide sleeve after forming a whole. This structure will have the following problems:

[0004] 1. After the cylinder bottom is welded to the cylinder barrel, the inside of the cylinder barrel will be in a semi-closed state, and only one end of the cylinder barrel can be inserted into the equipment for inspection; especially when the cylinder barrel is long, it is difficult to check internal damage and internal roughness.

[0005] 2. When welding the cylinder barrel and the cylinder bottom, the inner wall shape of the cylinder barrel or the cylinder bottom may be deformed due to welding.

[0006] 3. Since the cylinder barrel welded parts are integral and cannot be disassembled, if the oil cylinder fails, a comprehensive inspection cannot be carried out; and if the cylinder barrel is damaged, the parts cannot be replaced and must be scrapped. Summary of the invention

[0007] The main technical problem solved by the utility model is to provide a split oil cylinder, which positions the cylinder barrel by means of an assembled cylinder bottom and an end cover to avoid deformation caused by cylinder barrel welding, and the overall components can be disassembled and replaced, with a simple structure and convenient installation.

[0008] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a split oil cylinder, including a split cylinder bottom and an end cover, the cylinder bottom and the end cover are connected to form an inner cavity, a cylinder barrel is arranged in the inner cavity, the cylinder barrel is clamped by the cylinder bottom and the end cover, a piston and a piston rod are arranged in the cylinder barrel, a cylinder bottom oil port connected to the cavity is provided on the cylinder bottom, an end cover oil port connected to the cavity is provided on the end cover, and the cylinder bottom and the end cover are fixedly connected by an axially arranged connecting piece.

[0009] In a preferred embodiment of the utility model, the cylinder is a cylindrical body with a middle through-hole, and the piston divides the interior of the cylinder into a rod chamber and a rodless chamber, the rod chamber is connected to the oil port of the end cover, and the rodless chamber is connected to the oil port of the cylinder bottom.

[0010] In a preferred embodiment of the utility model, a sealing ring is provided between the cylinder barrel, the cylinder bottom and the end cover.

[0011] In a preferred embodiment of the utility model, a guide sleeve is provided on the inner side of the end cover, and an oil hole connecting the rodless cavity and the cylinder bottom oil port is opened on the guide sleeve.

[0012] In a preferred embodiment of the utility model, the guide sleeve is clamped and positioned by the end cover and the cylinder barrel, the left end surface of the guide sleeve partially contacts the right end surface of the cylinder barrel, and the right end surface of the guide sleeve cooperates with the step structure of the end cover.

[0013] In a preferred embodiment of the present invention, the guide sleeve is made of copper.

[0014] In a preferred embodiment of the present invention, the connecting member is a screw, and the screw is screwed into the end cover from the cylinder bottom along the axial direction.

[0015] In a preferred embodiment of the present invention, the cross-sections of the end cover and the cylinder bottom are square structures, and the screws are located at the four top corners of the cylinder bottom.

[0016] In a preferred embodiment of the present invention, the cylinder bottom is further provided with a connecting flange.

[0017] The beneficial effects of the utility model are as follows: the split oil cylinder of the utility model positions and installs the cylinder barrel through the cylinder bottom and the end cover, thereby avoiding deformation when the cylinder barrel and the cylinder bottom are welded, and ensuring assembly effect and use effect.

[0018] The utility model discloses a split oil cylinder, in which the end cover and the cylinder bottom are connected by screws, and the disassembly and assembly are convenient. When the oil cylinder fails, the cylinder barrel can be easily taken out to check the inside, which is convenient for replacing the internal parts and reduces the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0020] Figure 1 This is a structural schematic diagram of a preferred embodiment of the split oil cylinder of the utility model;

[0021] Figure 2 yes Figure 1 Left view of;

[0022] The markings of the components in the accompanying drawings are as follows: 1. cylinder bottom, 2. end cover, 3. cylinder barrel, 4. screws, 5. connecting flange, 6. piston, 7. piston rod, 8. sealing ring, 9. guide sleeve, 10. cylinder bottom oil port, 11. end cover oil port, 12. oil hole. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiment of the utility model will be described clearly and completely below. The structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by the utility model and the purpose that can be achieved, should still fall within the scope of the technical content disclosed in the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of narration, and are not used to limit the scope that can be implemented. The change or adjustment of its relative relationship should also be regarded as the scope that can be implemented in the utility model without substantially changing the technical content.

[0024] See also Figure 1 and Figure 2 A split oil cylinder includes a split cylinder bottom 1 and an end cover 2. The cylinder bottom 1 and the end cover 2 are connected to form an inner cavity. A cylinder barrel 3 is arranged in the inner cavity. The cylinder barrel 3 is clamped by the cylinder bottom and the end cover 2. The connecting piece is a screw 4. The screw 4 is screwed into the end cover 2 from the cylinder bottom 1 in the axial direction. The cylinder barrel 3 is used as a separate part. The cylinder barrel 3 is clamped in the middle by the cylinder bottom 1 and the end cover 2, and the cylinder bottom 1 and the end cover 2 are fastened by the screw 4, so the positioning is accurate and the disassembly and assembly are convenient.

[0025] Preferably, the cross-section of the end cover 2 and the cylinder bottom 1 is a square structure, and the screws 4 are located at the four corners of the cylinder bottom 1. The cylinder barrel 3 is a cylindrical structure, which cooperates with the inner cavity, so that the top corners of the cylinder bottom 1 and the end cover 2 are left with positions for installing the screws 4.

[0026] In addition, the cylinder bottom 1 is provided with a connecting flange 5, through which the entire oil cylinder can be installed, and the structure and installation position of the flange can be adjusted. The flange is connected to the cylinder bottom 1 by welding. Alternatively, the flange and the end cover 2 can be connected by welding.

[0027] The cylinder barrel 3 is a cylindrical body with a through middle, and a piston 6 and a piston rod 7 are arranged in the cylinder barrel 3. The piston 6 divides the inside of the cylinder barrel 3 into a rod chamber and a rodless chamber. The cylinder bottom 1 is provided with a cylinder bottom oil port 10 connected to the cavity, and the end cover 2 is provided with an end cover oil port 11 connected to the cavity. The rod chamber is connected to the end cover oil port 11, and the rodless chamber is connected to the cylinder bottom oil port 10. The end cover oil port 11 and the cylinder bottom oil port 10 are used for the entry and exit of hydraulic oil, pushing the piston 6 to move, and realizing the basic function of the oil cylinder.

[0028] A sealing ring 8 is provided between the cylinder barrel 3 and the cylinder bottom 1 and the end cover 2 to prevent oil from leaking from the gap between the cylinder bottom 1 and the end cover 2.

[0029] A guide sleeve 9 is provided on the inner side of the end cover 2, and an oil hole 12 is provided on the guide sleeve 9 to connect with the rodless cavity and the cylinder bottom oil port 10. The guide sleeve 9 is made of copper to prevent wear when it moves relative to the piston rod 7. If the guide sleeve 9 is worn, the cylinder can be removed and replaced at any time. Due to the position and structure of the guide sleeve 9, it is necessary to open an oil hole 12 on the guide sleeve 9 to ensure that the rodless cavity and the cylinder bottom oil port 10 are connected.

[0030] The guide sleeve 9 is clamped and positioned by the end cover 2 and the cylinder 3, the left end face of the guide sleeve 9 partially contacts the right end face of the cylinder 3, and the right end face of the guide sleeve 9 cooperates with the step structure of the end cover 2. The guide sleeve 9 is also clamped by a limiting structure, which is convenient for disassembly and replacement, accurate positioning, and reduces costs.

[0031] Different from the prior art, the split oil cylinder of the utility model positions the cylinder barrel by means of an assembled cylinder bottom and end cover, thereby avoiding deformation caused by cylinder barrel welding. The whole parts can be disassembled and replaced, and the structure is simple and the installation is convenient.

[0032] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A split oil cylinder, characterized in that: The invention comprises a split cylinder bottom (1) and an end cover (2), wherein the cylinder bottom (1) and the end cover (2) are connected to form an inner cavity, wherein a cylinder barrel (3) is arranged in the inner cavity, wherein the cylinder barrel (3) is clamped by the cylinder bottom (1) and the end cover (2), wherein a piston (6) and a piston rod (7) are arranged in the cylinder barrel (3), wherein a cylinder bottom oil port (10) communicating with the cavity is arranged on the cylinder bottom (1), wherein an end cover oil port (11) communicating with the cavity is arranged on the end cover (2), and wherein the cylinder bottom (1) and the end cover (2) are fixedly connected via an axially arranged connecting piece.

2. The split oil cylinder according to claim 1, characterized in that: The cylinder barrel (3) is a cylindrical body with a through middle, and the piston (6) divides the interior of the cylinder barrel (3) into a rod chamber and a rodless chamber, the rod chamber is connected to the end cover oil port (11), and the rodless chamber is connected to the cylinder bottom oil port (10).

3. The split oil cylinder according to claim 2, characterized in that: A sealing ring (8) is provided between the cylinder barrel (3), the cylinder bottom (1) and the end cover (2).

4. The split oil cylinder according to claim 1, characterized in that: A guide sleeve (9) is provided on the inner side of the end cover (2), and an oil hole (12) connecting to the rodless cavity and the cylinder bottom oil port (10) is provided on the guide sleeve (9).

5. The split oil cylinder according to claim 4, characterized in that: The guide sleeve (9) is clamped and positioned by the end cover (2) and the cylinder barrel (3); the left end surface of the guide sleeve (9) partially contacts the right end surface of the cylinder barrel (3); and the right end surface of the guide sleeve (9) cooperates with the step structure of the end cover (2).

6. The split oil cylinder according to claim 5, characterized in that: The guide sleeve (9) is made of copper.

7. The split oil cylinder according to any one of claims 1 to 6, characterized in that: The connecting member is a screw (4), and the screw (4) is screwed into the end cover (2) from the cylinder bottom (1) along the axial direction.

8. The split oil cylinder according to claim 7, characterized in that: The cross-sections of the end cover (2) and the cylinder bottom (1) are square structures, and the screws (4) are located at the four top corners of the cylinder bottom (1).

9. The split oil cylinder according to claim 8, characterized in that: The cylinder bottom is also provided with a connecting flange (5).

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