Guide sleeve of hydraulic oil cylinder

Abstract

The utility model relates to the technical field of guide sleeves, and discloses a hydraulic oil cylinder guide sleeve which comprises a guide sleeve body, a connecting base matched with a hydraulic oil cylinder is arranged at the upper end of the guide sleeve body, and threads used for being connected with the hydraulic oil cylinder are arranged on the inner wall of the connecting base. The guide sleeve comprises a guide sleeve main body and at least one exhaust hole which is annularly and uniformly arranged in the guide sleeve main body, the exhaust hole is matched with an inner cavity of the guide sleeve main body, at least one air channel which is annularly and uniformly arranged is arranged in the guide sleeve main body, and each air channel is respectively communicated with the exhaust hole. Compared with the prior art, the guide sleeve has the advantages that the service life of the guide sleeve body can be prevented from being affected, and abnormal sound is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of guide sleeves, in particular to a hydraulic cylinder guide sleeve. Background Art

[0002] Hydraulic cylinder is a common industrial equipment used to control the movement and force of objects. The guide sleeve is a component used in hydraulic cylinders. The seals in the hydraulic cylinder can avoid mechanical wear and friction by cooperating with the guide sleeve, so that the seals inside the cylinder are well protected. The guide sleeve can also ensure the guiding accuracy of the hydraulic cylinder by being pressed into the hydraulic cylinder barrel.

[0003] However, during the use of the current guide sleeve, the inner wall of the guide sleeve and the piston rod cannot be completely sealed, so that a small amount of gas will exist in the space between the inner wall of the guide sleeve and the piston rod. These gases will not only cause abnormal noise when the piston rod moves, but also increase the heat generated by friction when the piston rod moves, thereby accelerating the wear process of the guide sleeve and shortening the service life of the guide sleeve. Utility Model Content

[0004] (1) Technical problems solved

[0005] The technical problem to be solved by the present invention is that the current guide sleeve and the piston rod cannot be guaranteed to be in a completely sealed state all the time. The gas contained between the inner wall of the guide sleeve and the piston rod will shorten the service life of the guide sleeve and cause abnormal noise when the piston rod moves.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a hydraulic cylinder guide sleeve, including a guide sleeve main body, the upper end of the guide sleeve main body is provided with a connecting seat that cooperates with the hydraulic cylinder, the inner wall of the connecting seat is provided with a thread for connecting to the hydraulic cylinder, and also includes at least one exhaust hole that is evenly arranged in a ring shape in the guide sleeve main body, the exhaust hole cooperates with the inner cavity of the guide sleeve main body, and the guide sleeve main body is provided with at least one air channel that is evenly arranged in a ring shape, and each of the air channels is respectively connected to the exhaust hole.

[0008] As an improvement, the guide sleeve body is provided with an inner arc edge and an outer arc edge on both sides of the exhaust hole, and the inner arc edge cooperates with the inner cavity of the guide sleeve body.

[0009] As an improvement, the guide sleeve body is provided with an arc-shaped air inlet at the upper end of the air channel.

[0010] As an improvement, four exhaust holes and four air channels are provided.

[0011] As an improvement, both ends of the upper end of the inner cavity of the guide sleeve body are provided with sealing rubber rings that cooperate with the piston rod.

[0012] (3) Beneficial effects

[0013] The advantages of this utility model compared with the prior art are:

[0014] 1. Fix the guide sleeve body to the hydraulic cylinder through the threads on the connecting seat. The piston rod moves along the inner wall of the guide sleeve body. During the movement, if there is air between the piston rod and the inner wall of the guide sleeve body, it can be discharged through the exhaust hole.

[0015] 2. The inner arc edge and the outer arc edge cooperate to facilitate the air flow inside and outside the guide sleeve body, respectively, and to facilitate the discharge of gas between the piston rod and the inner wall of the guide sleeve body. The air channel can provide a flow channel for the air around the outer wall of the piston rod. The arc-shaped air inlet facilitates air intake, so that the gas can flow out from the exhaust hole along the air channel, avoiding the accumulation of gas between the piston rod and the inner wall of the guide sleeve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a hydraulic cylinder guide sleeve of the utility model Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of a hydraulic cylinder guide sleeve of the utility model Figure 2 .

[0018] Figure 3 It is an enlarged view of point A of a hydraulic cylinder guide sleeve of the present utility model.

[0019] Figure 4 It is a front sectional view of a hydraulic oil cylinder guide sleeve of the utility model.

[0020] Figure 5 It is a sectional stereoscopic view of a hydraulic oil cylinder guide sleeve of the utility model.

[0021] As shown in the figure: 1. Guide sleeve body; 2. Connecting seat; 3. Exhaust hole; 4. Outer arc edge; 5. Inner arc edge; 6. Air channel; 7. Arc-shaped air inlet. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, a hydraulic cylinder guide sleeve includes a guide sleeve main body 1, the upper end of the guide sleeve main body 1 is provided with a connecting seat 2 that cooperates with the hydraulic cylinder, the inner wall of the connecting seat 2 is provided with a thread for connecting to the hydraulic cylinder, and both ends of the upper end of the inner cavity of the guide sleeve main body 1 are provided with sealing rubber rings that cooperate with the piston rod, and also include at least one and evenly arranged annular exhaust holes 3 in the guide sleeve main body 1, and the exhaust holes 3 cooperate with the inner cavity of the guide sleeve main body 1.

[0025] Through the above structure, the gas can be discharged through the exhaust hole 3. The specific structure is as follows:

[0026] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the guide sleeve body 1 is provided with at least one air channel 6 that is evenly arranged in a ring shape, and each of the air channels 6 is connected to the exhaust hole 3 respectively. The guide sleeve body 1 is provided with an arc-shaped air inlet 7 at the upper end of the air channel 6. The arc-shaped air inlet 7 facilitates the entry of air into the air channel 6. There are four exhaust holes 3 and four air channels 6.

[0027] Through the above structure, the air channel 6 can provide a flow channel for the air around the piston rod.

[0028] Example 2

[0029] like Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the guide sleeve body 1 is provided with an inner arc edge 5 and an outer arc edge 4 on both sides of the exhaust hole 3 , and the inner arc edge 5 cooperates with the inner cavity of the guide sleeve body 1 .

[0030] Through the above structure, the inner arcuate edge 5 and the outer arcuate edge 4 facilitate air flow through the exhaust hole 3 .

[0031] During the specific implementation of the present invention, when in use, the guide sleeve body is rotatably mounted on the hydraulic cylinder using the thread of the connecting seat. At this time, the piston rod is placed in the inner cavity of the guide sleeve body. When the hydraulic cylinder is operated, if there is gas between the piston rod and the inner wall of the guide sleeve body, the gas can be discharged through the inner arc edge and the exhaust hole. The inner arc edge and the outer arc edge on both sides of the exhaust hole facilitate air flow.

[0032] The gas located around the outer wall of the piston rod can enter the air channel through the arc-shaped air inlet and finally flow to the exhaust hole for discharge. This can prevent gas from being contained in the space between the piston rod and the inner wall of the guide sleeve body, thereby avoiding abnormal noise when the piston rod moves, and also avoiding the increase in heat generated by friction when the piston rod moves due to the presence of gas, thereby avoiding affecting the service life of the guide sleeve body.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0035] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A hydraulic cylinder guide sleeve, comprising a guide sleeve body (1), the upper end of the guide sleeve body (1) is provided with a connection seat (2) matched with the hydraulic cylinder, the inner wall of the connection seat (2) is provided with a thread for connecting with the hydraulic cylinder, characterized in that: The guide sleeve body (1) further comprises at least one exhaust hole (3) evenly arranged in an annular shape in the guide sleeve body (1), the exhaust hole (3) cooperates with the inner cavity of the guide sleeve body (1), and the guide sleeve body (1) is provided with at least one air channel (6) evenly arranged in an annular shape, and each of the air channels (6) is respectively connected to the exhaust hole (3).

2. The hydraulic cylinder guide sleeve according to claim 1, characterized in that: The guide sleeve body (1) is provided with an inner arc edge (5) and an outer arc edge (4) on both sides of the exhaust hole (3), and the inner arc edge (5) cooperates with the inner cavity of the guide sleeve body (1).

3. A hydraulic cylinder guide sleeve according to claim 2, characterized in that: The guide sleeve body (1) is provided with an arc-shaped air inlet (7) at the upper end of the air channel (6).

4. The hydraulic cylinder guide sleeve according to claim 3, characterized in that: The exhaust holes (3) and the air passages (6) are each provided with four.

5. The hydraulic cylinder guide sleeve according to claim 1, characterized in that: Both ends of the upper end of the inner cavity of the guide sleeve body (1) are provided with sealing rubber rings that cooperate with the piston rod.

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