A sealing guide sleeve structure of a hydraulic oil cylinder

Abstract

The utility model relates to the technical field of the guide sleeve of hydraulic oil cylinder, and disclose a kind of sealing guide sleeve structure of hydraulic oil cylinder, including hydraulic oil cylinder total assembly, wherein, guide sleeve assembly can slide in the inner cavity of the cylinder barrel of hydraulic oil cylinder, guide sleeve assembly is detachably installed in the lower end of the hydraulic oil cylinder piston rod, guide sleeve assembly includes: guide piston;Two semicircular guides;Two arc sealings;Two locking pieces, two locking pieces can lock and fix two semicircular guides with guide piston. In the utility model, two locking pieces are disassembled by using punch, after two locking pieces fall off, two semicircular guides can be conveniently disassembled from guide piston, therefore, guide sleeve assembly and the installation and disassembly of component on guide sleeve assembly are convenient, and, can also avoid the problem that component surface is scratched due to forcible disassembly.

Description

Technical Field

[0001] This utility model relates to the field of guide sleeve technology for hydraulic cylinders, specifically a sealing guide sleeve structure for hydraulic cylinders. Background Technology

[0002] The sealing guide sleeve of a hydraulic cylinder is a component installed on the piston rod of the hydraulic cylinder, which plays a guiding role in the movement of the piston rod.

[0003] The guide sleeves on the market do not have a structure to assist disassembly and lack sealing. At the same time, they are prone to scratches on the surface of the parts during disassembly.

[0004] For example, Chinese utility model patent CN216618084U discloses a sealing guide sleeve for a hydraulic cylinder. The technical problem clearly states in the patent document as follows:

[0005] "Guide sleeves on the market do not have a structure to assist disassembly, which can easily cause scratches on the surface of parts during disassembly."

[0006] Based on this, a sealing guide sleeve structure for a hydraulic cylinder is proposed. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this utility model provides a sealing guide sleeve structure for hydraulic cylinders, thereby solving the problems mentioned in the background art: guide sleeves on the market do not have a structure to assist disassembly, and their sealing performance is inadequate. At the same time, they are prone to causing scratches on the surface of parts during disassembly.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A sealing guide sleeve structure for a hydraulic cylinder includes a hydraulic cylinder assembly comprising a hydraulic cylinder barrel, a hydraulic cylinder piston rod movably mounted on the hydraulic cylinder barrel, an end cap bolted to the top opening of the hydraulic cylinder barrel, and a guide sleeve assembly mounted on the hydraulic cylinder piston rod. The guide sleeve assembly is capable of sliding up and down within the inner cavity of the hydraulic cylinder barrel and is detachably mounted on the lower end of the hydraulic cylinder piston rod. The guide sleeve assembly includes:

[0012] A guide piston, one inner end of which is connected to the lower end of the piston rod of the hydraulic cylinder, and one outer end of which is connected to the inner wall of the cylinder barrel of the hydraulic cylinder.

[0013] Two semi-circular guide members are symmetrically arranged and form a ring structure after being symmetrically arranged, surrounding the outer wall of the guide piston. The two semi-circular guide members are detachably mounted on the guide piston.

[0014] Two arc-shaped seals are respectively installed on the outer side wall of the corresponding semi-circular guide, and the outer side wall of the two arc-shaped seals is slidably connected to the inner cavity side wall of the hydraulic cylinder barrel.

[0015] Two locking components are detachably installed on both sides of the guide piston, and the two locking components can lock and fix the two semi-circular guide components to the guide piston.

[0016] Preferably, the bottom end of the hydraulic cylinder piston rod has a piston rod threaded portion, and the center of the guide piston has a guide piston threaded cavity, and the guide piston can be threadedly connected to the piston rod threaded portion through the guide piston threaded cavity.

[0017] Preferably, an annular insert groove is formed on the outer side wall of the guide piston;

[0018] The two semi-circular guide members are symmetrically installed in the annular mounting groove.

[0019] Preferably, both of the semicircular guide members are semicircular guide sleeves, and the two semicircular guide sleeves are symmetrically engaged in the annular mounting groove. After engagement, the edges of the outer walls of the two semicircular guide sleeves are flush with the edges of the outer walls of the guide piston.

[0020] Preferably, the guide piston has a first positioning hole on both sides, and the two semi-circular guide sleeves have a second positioning hole.

[0021] Both second positioning holes can coincide with the corresponding first positioning holes, and after coinciding, they form an installation channel.

[0022] Preferably, both locking components are locking rods, and both locking rods can be inserted into the corresponding installation channels. After the two locking rods are inserted and installed, they can lock and fix the two semi-circular guide sleeves and guide pistons.

[0023] Preferably, both locking rods are interference-fitted with the corresponding mounting channels.

[0024] Preferably, the outer walls of both semi-circular guide sleeves are provided with arc-shaped fitting grooves;

[0025] Both of the arc-shaped seals are arc-shaped sealing guides, and both arc-shaped sealing guides are bonded and installed in corresponding arc-shaped mounting grooves. The outer sidewalls of the two arc-shaped sealing guides are flush with the edge of the outer sidewall of the guide piston, and the outer sidewalls of the two arc-shaped sealing guides are slidably connected to the inner cavity sidewall of the hydraulic cylinder barrel.

[0026] Beneficial effects

[0027] This utility model provides a sealing guide sleeve structure for a hydraulic cylinder, which has the following advantages:

[0028] I. In this utility model, after the two semi-circular guide members are installed on the guide piston, they can form a ring structure and surround the outer wall of the guide piston. At the same time, the two locking members can lock and fix the two semi-circular guide members and the guide piston. In actual use, the two locking members can be disassembled by using a punch. After the two locking members are disassembled, the two semi-circular guide members can be easily removed from the guide piston. Therefore, the guide sleeve assembly and the components on the guide sleeve assembly are easy to install and disassemble, and the problem of scratches on the surface of the parts caused by forced disassembly can also be avoided.

[0029] Second, in this utility model, after the two arc-shaped seals are installed on the corresponding semi-circular guides, they can increase the sealing between the inner cavity of the hydraulic cylinder barrel and the guide sleeve assembly.

[0030] Third, in this utility model, the threaded engagement between the guide piston threaded cavity and the piston rod threaded part makes it easier to disassemble and assemble the guide piston and the hydraulic cylinder piston rod.

[0031] IV. In this utility model, both locking components are locking rods. Both locking rods can be inserted and installed in the corresponding installation channels. After the two locking rods are inserted and installed, they can lock and fix the two semi-circular guide sleeves and guide pistons.

[0032] Conversely, by using a punch to disengage the two locking rods from their corresponding mounting channels, the two semi-circular guide sleeves can be easily removed, thus facilitating the disassembly of the two semi-circular guide sleeves from the guide piston.

[0033] V. In this utility model, after the two arc-shaped sealing guide pieces are bonded and installed into the corresponding arc-shaped mounting grooves, the sealing performance between the guide sleeve assembly and the inner cavity of the hydraulic cylinder barrel can be increased.

[0034] VI. In this utility model, the end cover can be installed or removed at the opening of the hydraulic cylinder barrel by bolts. When the guide sleeve assembly needs to be disassembled and replaced, simply loosen the bolts on the end cover in sequence to remove the end cover from the opening of the hydraulic cylinder barrel. After the end cover is removed from the opening of the hydraulic cylinder barrel, the guide sleeve assembly can be disassembled and replaced. Attached Figure Description

[0035] Figure 1 This is a three-dimensional schematic diagram of a partial cross-section of the hydraulic cylinder assembly and guide sleeve assembly of this utility model.

[0036] Figure 2 This is a three-dimensional schematic diagram of the hydraulic cylinder piston rod and guide sleeve assembly of this utility model after combination;

[0037] Figure 3 This is an exploded view of the hydraulic cylinder piston rod and guide sleeve assembly of this utility model.

[0038] In the diagram: 1. Hydraulic cylinder barrel; 2. Hydraulic cylinder piston rod; 21. Threaded part of piston rod; 3. End cap; 4. Guide sleeve assembly; 41. Guide piston; 411. Threaded cavity of guide piston; 412. Annular insert groove; 413. First positioning hole; 42. Semi-circular guide sleeve; 421. Arc-shaped insert groove; 422. Second positioning hole; 43. Arc-shaped sealing guide plate; 44. Locking rod. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Example 1

[0041] The guide sleeves on the market do not have a structure to assist disassembly and lack sealing. At the same time, they are prone to scratches on the surface of the parts during disassembly.

[0042] Based on this, in order to solve the above-mentioned technical problems, the following technical solution is adopted, as detailed below:

[0043] like Figure 1-3 As shown, this utility model provides a technical solution:

[0044] A sealing guide sleeve structure for a hydraulic cylinder includes a hydraulic cylinder assembly, which consists of a hydraulic cylinder barrel 1, a hydraulic cylinder piston rod 2 movably mounted on the hydraulic cylinder barrel 1, an end cap 3 fastened to the top opening of the hydraulic cylinder barrel 1 by bolts, and a guide sleeve assembly 4 mounted on the hydraulic cylinder piston rod 2.

[0045] The end cap 3 can be installed or removed at the opening of the hydraulic cylinder barrel 1 by bolts. When the guide sleeve assembly 4 needs to be disassembled and replaced, the bolts on the end cap 3 can be loosened in sequence to remove the end cap 3 from the opening of the hydraulic cylinder barrel 1.

[0046] Once the end cap 3 is removed from the opening of the hydraulic cylinder barrel 1, the guide sleeve assembly 4 can be disassembled and replaced.

[0047] During the assembly of the hydraulic cylinder, the guide sleeve assembly 4 can slide up and down in the inner cavity of the hydraulic cylinder barrel 1, and the guide sleeve assembly 4 is detachably installed at the lower end of the hydraulic cylinder piston rod 2.

[0048] The guide sleeve assembly 4 can be replaced by removing it from the lower end of the hydraulic cylinder piston rod 2.

[0049] Specifically, the guide sleeve assembly 4 includes:

[0050] The guide piston 41 has one inner end connected to the lower end of the hydraulic cylinder piston rod 2, and one outer end connected to the inner wall of the hydraulic cylinder barrel 1.

[0051] Two semi-circular guide members are symmetrically arranged. After being symmetrically arranged, the two semi-circular guide members form a ring structure and surround the outer wall of the guide piston 41. The two semi-circular guide members are detachably mounted on the guide piston 41.

[0052] Two arc-shaped seals are respectively installed on the outer side wall of the corresponding semi-circular guide, and the outer side wall of the two arc-shaped seals is slidably connected to the inner cavity side wall of the hydraulic cylinder barrel 1.

[0053] Two locking components are detachably installed on both sides of the guide piston 41, and the two locking components can lock and fix the two semi-circular guide components to the guide piston 41.

[0054] In this embodiment, after the two semi-circular guide members are installed on the guide piston 41, they can form a ring structure and surround the outer wall of the guide piston 41. At the same time, the two locking members can lock and fix the two semi-circular guide members and the guide piston 41. In actual use, the two locking members can be disassembled by using a punch. After the two locking members are disassembled, the two semi-circular guide members can be easily removed from the guide piston 41. Therefore, the guide sleeve assembly 4 and the components on the guide sleeve assembly 4 are easy to install and remove, and the problem of scratches on the surface of the parts caused by forced removal can also be avoided.

[0055] After the two arc-shaped seals are installed on the corresponding semi-circular guides, they can increase the sealing between the inner cavity of the hydraulic cylinder barrel 1 and the guide sleeve assembly 4.

[0056] Example 2

[0057] like Figure 1-3 As shown, improvements are made based on Example 1:

[0058] Furthermore, the bottom end of the hydraulic cylinder piston rod 2 has a piston rod threaded portion 21, and the center of the guide piston 41 has a guide piston threaded cavity 411. The guide piston 41 can be threadedly connected to the piston rod threaded portion 21 through the guide piston threaded cavity 411. Through the threaded engagement between the guide piston threaded cavity 411 and the piston rod threaded portion 21, the disassembly and assembly of the guide piston 41 and the hydraulic cylinder piston rod 2 can be made more convenient.

[0059] Furthermore, an annular insert groove 412 is provided on the outer side wall of the guide piston 41;

[0060] Two semi-circular guide members are symmetrically installed in the annular mounting groove 412, which facilitates the installation of the two semi-circular guide members.

[0061] Specifically, both semi-circular guide components are semi-circular guide sleeves 42. The two semi-circular guide sleeves 42 are symmetrically engaged in the annular mounting groove 412. After engagement, the edges of the outer walls of the two semi-circular guide sleeves 42 are flush with the edges of the outer walls of the guide piston 41.

[0062] Furthermore, the guide piston 41 has a first positioning hole 413 on both sides, and the two semi-circular guide sleeves 42 have a second positioning hole 422.

[0063] Both second positioning holes 422 can coincide with the corresponding first positioning holes 413, and after the coincidence, they form an installation channel;

[0064] Both locking components are locking rods 44. Both locking rods 44 can be inserted into the corresponding installation channels. After the two locking rods 44 are inserted and installed, they can lock and fix the two semi-circular guide sleeves 42 and the guide pistons 41.

[0065] Conversely, after using a punch to disengage the two locking rods 44 from their corresponding mounting channels, the two semi-circular guide sleeves 42 can be easily removed, thus facilitating the disassembly of the two semi-circular guide sleeves 42 from the guide piston 41.

[0066] Furthermore, both locking rods 44 are interference-fitted with their corresponding mounting channels, thereby enabling the two locking rods 44 to be more securely fastened within their respective mounting channels.

[0067] Furthermore, the outer walls of both semi-circular guide sleeves 42 are provided with arc-shaped fitting grooves 421;

[0068] Both arc-shaped seals are arc-shaped sealing guide pieces 43. Both arc-shaped sealing guide pieces 43 are bonded and installed in the corresponding arc-shaped mounting grooves 421. The outer sidewalls of the two arc-shaped sealing guide pieces 43 are flush with the edge of the outer sidewall of the guide piston 41. The outer sidewalls of the two arc-shaped sealing guide pieces 43 are slidably connected to the inner cavity sidewall of the hydraulic cylinder barrel 1.

[0069] The two arc-shaped mounting grooves 421 facilitate the installation of the corresponding arc-shaped sealing guide pieces 43. After the two arc-shaped sealing guide pieces 43 are bonded and installed into the corresponding arc-shaped mounting grooves 421, they can increase the sealing between the guide sleeve assembly 4 and the inner cavity of the hydraulic cylinder barrel 1.

[0070] In summary, the workflow of this utility model is as follows:

[0071] like Figure 1-3 As shown, after the two semi-circular guide members are installed on the guide piston 41, they can form a ring structure and surround the outer wall of the guide piston 41. At the same time, the two locking members can lock and fix the two semi-circular guide members and the guide piston 41. In actual use, the two locking members can be disassembled by using a punch. After the two locking members are disassembled, the two semi-circular guide members can be easily removed from the guide piston 41. Therefore, the guide sleeve assembly 4 and the components on the guide sleeve assembly 4 are easy to install and disassemble, and the problem of scratches on the surface of the parts caused by forced disassembly can also be avoided.

[0072] After the two arc-shaped seals are installed on the corresponding semi-circular guides, they can increase the sealing between the inner cavity of the hydraulic cylinder barrel 1 and the guide sleeve assembly 4.

[0073] The different embodiments described above can be combined, substituted, or used in combination with each other.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0075] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing guide sleeve structure for a hydraulic cylinder, comprising a hydraulic cylinder assembly, the hydraulic cylinder assembly consisting of a hydraulic cylinder barrel (1), a hydraulic cylinder piston rod (2) movably mounted on the hydraulic cylinder barrel (1), an end cap (3) fastened to the top opening of the hydraulic cylinder barrel (1) by bolts, and a guide sleeve assembly (4) mounted on the hydraulic cylinder piston rod (2), wherein, The guide sleeve assembly (4) is capable of sliding up and down within the inner cavity of the hydraulic cylinder barrel (1), characterized in that: the guide sleeve assembly (4) is detachably mounted on the lower end of the hydraulic cylinder piston rod (2), and the guide sleeve assembly (4) comprises: The guide piston (41) has one inner end connected to the lower end of the hydraulic cylinder piston rod (2) and one outer end connected to the inner wall of the hydraulic cylinder barrel (1). Two semi-circular guide members are symmetrically arranged. After being symmetrically arranged, the two semi-circular guide members form a ring structure and surround the outer wall of the guide piston (41). The two semi-circular guide members are detachably installed on the guide piston (41). Two arc-shaped seals are respectively installed on the outer side wall of the corresponding semi-circular guide, and the outer side wall of the two arc-shaped seals is slidably connected to the inner cavity side wall of the hydraulic cylinder barrel (1). Two locking components are detachably installed on both sides of the guide piston (41), and the two locking components can lock and fix the two semi-circular guide components to the guide piston (41).

2. The sealing guide sleeve structure for a hydraulic cylinder according to claim 1, characterized in that: The bottom end of the hydraulic cylinder piston rod (2) has a piston rod threaded portion (21), and the center of the guide piston (41) has a guide piston threaded cavity (411). The guide piston (41) can be threadedly connected to the piston rod threaded portion (21) through the guide piston threaded cavity (411).

3. The sealing guide sleeve structure for a hydraulic cylinder according to claim 1, characterized in that: The outer side wall of the guide piston (41) is provided with an annular insert groove (412); The two semi-circular guide members are symmetrically installed in the annular insert groove (412).

4. The sealing guide sleeve structure for a hydraulic cylinder according to claim 3, characterized in that: Both of the semicircular guide components are semicircular guide sleeves (42). The two semicircular guide sleeves (42) are symmetrically engaged in the annular mounting groove (412). After engagement, the edges of the outer walls of the two semicircular guide sleeves (42) are flush with the edges of the outer walls of the guide piston (41).

5. The sealing guide sleeve structure for a hydraulic cylinder according to claim 4, characterized in that: The guide piston (41) has a first positioning hole (413) on both sides, and the two semi-circular guide sleeves (42) have a second positioning hole (422). Both second positioning holes (422) can coincide with the corresponding first positioning hole (413), and after coinciding, they form an installation channel.

6. The sealing guide sleeve structure for a hydraulic cylinder according to claim 5, characterized in that: Both locking components are locking rods (44), and both locking rods (44) can be inserted and installed in the corresponding installation channels. After the two locking rods (44) are inserted and installed, they can lock and fix the two semi-circular guide sleeves (42) and the guide pistons (41).

7. The sealing guide sleeve structure for a hydraulic cylinder according to claim 6, characterized in that: Both locking rods (44) are interference-fitted with the corresponding mounting channels.

8. The sealing guide sleeve structure for a hydraulic cylinder according to claim 4, characterized in that: Both of the semi-circular guide sleeves (42) have arc-shaped fitting grooves (421) on their outer side walls; Both of the arc-shaped seals are arc-shaped sealing guides (43). Both of the arc-shaped sealing guides (43) are bonded and installed in the corresponding arc-shaped mounting grooves (421). The outer sidewalls of the two arc-shaped sealing guides (43) are flush with the edge of the outer sidewall of the guide piston (41). The outer sidewalls of the two arc-shaped sealing guides (43) are slidably connected to the inner cavity sidewall of the hydraulic cylinder barrel (1).

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