External oil way structure of assembled oil cylinder

Abstract

The utility model discloses an external oil way structure of an assembled oil cylinder, which comprises a cylinder body, oil port butt-joint pipes arranged on two sides of the cylinder body, and an oil seat arranged on the cylinder body between the oil port butt-joint pipes on the two sides. The oil port butt joint pipes on the two sides are connected with the oil base through connecting pipes. A butt joint column is arranged at the other end of the connecting pipe; the butt joint ring is connected with the oil port butt joint pipe through a connecting bolt; butt-joint ports are formed in the two sides of the oil base, fixing steps are turned in the butt-joint ports to divide the butt-joint ports into first cavities and second cavities, limiting rings are arranged on the peripheries of the butt-joint columns, and multiple sets of sealing rings are arranged on the butt-joint columns located on the outer sides of the limiting rings; the butt joint column located on the outer side of the limiting ring is in sliding fit with the first cavity, and the limiting ring abuts against the fixing step. By the adoption of the connection mode of the connection bolts and insertion connection, an external oil way is fixed without welding in the whole process, assembling is convenient, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of oil cylinder manufacturing, in particular to an assembled oil cylinder external oil circuit structure. Background Art

[0002] Traditionally, the external oil circuit of the oil cylinder is generally connected by a hose or a steel pipe. The hose connection is easily damaged after a long period of use and often needs to be replaced. The traditional method of using steel pipes is to fix them by welding. If the steel pipe needs to be replaced during use, the weld needs to be cleaned, which is extremely inconvenient and inefficient during maintenance. At the same time, due to the different technical levels and lack of experience of the workers, the welding quality will also fluctuate, further affecting the overall sealing. Utility Model Content

[0003] The utility model aims to provide an assembled oil cylinder external oil circuit structure which is free of welding and convenient to install.

[0004] The purpose of the utility model is achieved as follows: an assembled oil cylinder external oil circuit structure, comprising a cylinder body, and oil port butt pipes arranged on both sides of the cylinder body, and an oil seat arranged on the cylinder body between the oil port butt pipes on both sides; the oil port butt pipes on both sides are connected to the oil seat through connecting pipes; a butt ring is provided at one end of the connecting pipe, and a butt column is provided at the other end; the butt ring is connected to the oil port butt pipe through a connecting bolt;

[0005] Docking ports are provided on both sides of the oil seat, and fixed steps are machined in the docking ports to divide the docking ports into a first cavity and a second cavity. A limiting ring is provided on the periphery of the docking column, and a plurality of sealing rings are provided on the docking column located outside the limiting ring; the docking column located outside the limiting ring is slidably matched with the first cavity, and the limiting ring is in conflict with the fixed step.

[0006] Preferably, an internal thread is provided on the inner wall of the second cavity, and the docking port is rotatably connected with a T-nut with a hollow interior, and the T-nut is sleeved on the connecting pipe; an external thread is provided on the periphery of the T-nut, and after the T-nut is connected to the inner wall of the second cavity, it forms extrusion with the limiting protrusion.

[0007] Preferably, the docking ring is provided with threaded inner cavities on the upper and lower sides, and the connecting bolt passes through the threaded inner cavity and is connected to the oil port docking pipe; the connecting bolt is hollow inside and has multiple groups of through holes in the middle.

[0008] Preferably, when the connecting bolt is rotated downward to abut against the docking ring, the through hole is located at the center of the pipe of the connecting pipe and is not exposed outside the docking ring.

[0009] Preferably, sealing gaskets are provided between the connecting bolts and the docking ring, and between the docking ring and the oil port docking tube.

[0010] Preferably, rubber pads are provided on the sides of the limiting ring opposite to the fixed step.

[0011] Compared with the prior art, the utility model is beneficial in that:

[0012] 1. Use steel pipes instead of traditional hoses, which have a more stable structure and are not easy to damage, reducing the frequency of maintenance;

[0013] 2. The connection method between the connecting pipe and the oil seat, and the connection method between the docking ring and the docking pipe are changed from welding to plug-in and bolt connection, which makes installation simpler and avoids the phenomenon of loose welding. At the same time, the detachable connection method facilitates the later maintenance and replacement of the connecting pipe, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 for Figure 1 A magnified view of the structure in the middle.

[0016] Figure 3 It is a structural schematic diagram of the connecting bolt of the utility model.

[0017] Among them, 1 cylinder body, 2 oil port connecting tube, 3 oil seat, 4 connecting pipe, 401 connecting ring, 401 threaded inner cavity, 402 connecting column, 402 limiting ring, 5 connecting bolts, 501 through hole, 6 connecting interface, 601 fixed step, 602 first cavity, 603 second cavity, 7 T-nut. DETAILED DESCRIPTION

[0018] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0019] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of 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.

[0021] like Figure 1-3 As shown, an assembled oil cylinder external oil circuit structure comprises a cylinder body 1, and oil port butt pipes 2 arranged on both sides of the cylinder body 1, and an oil seat 3 arranged on the cylinder body between the oil port butt pipes 2 on both sides; the oil port butt pipes 2 on both sides are connected to the oil seat 3 through connecting pipes 4; a butt ring 401 is provided at one end of the connecting pipe 4, and a butt column 402 is provided at the other end; the butt ring 401 is connected to the oil port butt pipe 2 through a connecting bolt 5;

[0022] Docking ports 6 are provided on both sides of the oil seat 3, and fixed steps 601 are machined inside the docking ports 6 to divide the docking ports into a first cavity 602 and a second cavity 603. A limiting ring 4021 is provided on the periphery of the docking column 402, and a plurality of sealing rings (not shown in the figure) are provided on the docking column 402 located outside the limiting ring 4021; the docking column 402 located outside the limiting ring 4021 slides in cooperation with the first cavity 602, and the limiting ring 4021 contacts the fixed step 601.

[0023] An internal thread is provided on the inner wall of the second cavity 603, and the docking port 6 is rotatably connected with a T-nut 7 with a hollow interior, and the T-nut 77 is sleeved on the connecting pipe; an external thread is provided on the outer periphery of the T-nut 7, and after the T-nut 7 is connected to the inner wall of the second cavity 603, it is extruded with the limiting protrusion, and the T-nut is inserted from one side of the docking ring. After the docking column is inserted into the oil seat, the T-nut can be rotated.

[0024] like Figure 2 As shown, threaded inner cavities 4011 are provided on the upper and lower sides of the docking ring 401, and the connecting bolt 5 passes through the threaded inner cavity and is connected to the oil port docking pipe; the connecting bolt 5 is hollow inside and has multiple groups of through holes 501 in the middle. After the connecting bolt is threadedly connected to the docking ring, one end extends out and is threadedly connected to the oil port docking pipe again, thereby fixing the docking ring and the oil port together.

[0025] like Figure 2-3 As shown, when the connecting bolt 5 is rotated downward until it contacts the docking ring 401, the through hole 501 is located at the center of the connecting pipe and is not exposed outside the docking ring, ensuring that the through hole can form a continuous loop with the internal channel of the connecting pipe and the internal channel of the connecting bolt, further realizing the output or input of hydraulic oil.

[0026] like Figure 2 As shown, sealing gaskets are provided between the connecting bolt 5 and the docking ring 401 and between the docking ring 401 and the oil port butt pipe 2. The sealing gaskets prevent hard contact between parts on the one hand and increase the sealing of the connection on the other hand.

[0027] like Figure 1 As shown, rubber pads (not shown in the figure) are provided on the opposite sides of the limiting ring 4021 and the fixed step 601. The limiting protrusion and the fixed step can increase the sealing between the two through the extrusion of the T-nut, which greatly improves the sealing between the connecting pipe and the oil seat. At the same time, with the sealing ring on the docking column, the overall sealing is further improved.

[0028] The working principle of the utility model is explained as follows: when installing the external connecting pipe, first insert the T-nut from the docking ring, then insert the docking column of the connecting pipe into the docking port, rotate the T-nut to tighten the limiting protrusion to complete the connection at one end, and finally connect the docking ring and the oil port docking pipe through the connecting bolt; the entire device has higher structural strength than the hose, and there is no welding throughout the process, so the assembly is convenient and quick.

[0029] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. An assembled oil cylinder external oil circuit structure, characterized in that: It comprises a cylinder body, oil port butt pipes arranged on both sides of the cylinder body, and an oil seat arranged on the cylinder body between the oil port butt pipes on both sides; the oil port butt pipes on both sides are connected to the oil seat through connecting pipes; a butt ring is arranged at one end of the connecting pipe, and a butt column is arranged at the other end; the butt ring is connected to the oil port butt pipe through a connecting bolt; Docking ports are provided on both sides of the oil seat, and fixed steps are machined in the docking ports to divide the docking ports into a first cavity and a second cavity. A limiting ring is provided on the periphery of the docking column, and a plurality of sealing rings are provided on the docking column located outside the limiting ring; the docking column located outside the limiting ring is slidably matched with the first cavity, and the limiting ring is in conflict with the fixed step.

2. The external oil circuit structure of an assembled oil cylinder according to claim 1, characterized in that: An internal thread is provided on the inner wall of the second cavity, and the docking port is rotatably connected with a T-nut with a hollow interior, and the T-nut is sleeved on the connecting pipe; an external thread is provided on the periphery of the T-nut, and after the T-nut is connected to the inner wall of the second cavity, it is extruded with the limiting protrusion.

3. The external oil circuit structure of an assembled oil cylinder according to claim 1, characterized in that: The butt-joint ring is provided with threaded inner cavities on the upper and lower sides, and the connecting bolt is connected with the oil port butt-joint pipe after passing through the threaded inner cavity; the connecting bolt is hollow inside and has a plurality of through holes in the middle.

4. The external oil circuit structure of an assembled oil cylinder according to claim 3, characterized in that: When the connecting bolt is rotated downward to contact the docking ring, the through hole is located at the center of the pipeline of the connecting pipe and does not expose the outside of the docking ring.

5. The external oil circuit structure of an assembled oil cylinder according to claim 1, characterized in that: Sealing gaskets are arranged between the connecting bolts and the docking ring, and between the docking ring and the oil port docking pipe.

6. The external oil circuit structure of an assembled oil cylinder according to claim 1, characterized in that: The limiting ring and the side opposite to the fixed step are both provided with rubber pads.

Images