Dustproof sealing structure of hydraulic cylinder

Abstract

The utility model discloses a hydraulic cylinder dustproof sealing structure which comprises a hydraulic cylinder, a sealing barrel is fixedly assembled at the upper end of the hydraulic cylinder, a connecting piece is fixedly assembled at the upper end of a piston rod of the hydraulic cylinder, and the piston rod and a cylinder body of the hydraulic cylinder are sealed through matched use of the sealing barrel and a sealing ring. The working effect of the hydraulic cylinder is guaranteed, meanwhile, the good dustproof effect is achieved, the situation that dust affects the working capacity of the hydraulic cylinder is avoided, dust on the outer wall of the piston rod of the hydraulic cylinder can be scraped away through the effect of the dustproof sealing structure when the piston rod of the hydraulic cylinder moves, and meanwhile when the hydraulic cylinder is not used, the sealing ring can be effectively extruded to be better filled in the sealing barrel; according to the hydraulic cylinder, the good sealing effect is guaranteed when equipment is not used, the situation that the service life of the hydraulic cylinder is affected by dust generated by placement is avoided, the dustproof sealing structure is extruded through the connecting piece when the equipment is not used, the sealing ring is controlled to be tightly filled in the sealing cylinder, and meanwhile connection with other components is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of dustproofing of hydraulic cylinders, in particular to a dustproof sealing structure of a hydraulic cylinder. Background Art

[0002] A hydraulic cylinder is a device that uses liquid pressure to generate mechanical motion. It is usually composed of a cylinder, a piston, and a seal. The hydraulic cylinder applies pressure on both sides of the piston through a liquid (such as oil) to generate linear or rotary motion. Hydraulic cylinders in hydraulic systems are widely used in industrial machinery, construction equipment, aerospace, and other fields. The seal of the hydraulic cylinder is crucial. It can effectively prevent the leakage of liquid in the hydraulic cylinder. At the same time, it is necessary to prevent impurities from entering the cylinder to ensure the normal operation of the system. Existing hydraulic cylinder dustproof equipment simply uses a rubber ring to plug into the connection between the cylinder body and the piston rod, which has poor sealing effect and poor practicality. Utility Model Content

[0003] The utility model aims to provide a dustproof sealing structure for a hydraulic cylinder to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic cylinder dustproof sealing structure, comprising a hydraulic cylinder, a sealing sleeve fixedly mounted on the upper end of the hydraulic cylinder, the sealing sleeve is sleeved on the outer wall of the piston rod of the hydraulic cylinder, a sealing ring is sleeved on the outer wall of the piston rod of the hydraulic cylinder, the sealing ring is inserted into the sealing sleeve, the outer wall of the piston rod of the hydraulic cylinder is sleeved with a dustproof sealing structure, the dustproof sealing structure is mounted on both sides of the inner wall of the hydraulic cylinder, and a connecting piece is fixedly mounted on the upper end of the piston rod of the hydraulic cylinder.

[0005] Preferably, the dustproof sealing structure includes support rods, which are symmetrically installed on both sides of the inner wall of the hydraulic cylinder, and the upper ends of the two support rods are fixedly installed with clamping blocks, the outer walls of the two support rods are both sleeved with support blocks and springs, the springs are arranged between the support blocks and the hydraulic cylinder, the surfaces of the two support blocks are fixedly installed with connecting rods, and a scraper cylinder and a pressure plate are fixedly installed between the two connecting rods, and the scraper cylinder and the pressure plate are tightly sleeved on the outer wall of the piston rod of the hydraulic cylinder.

[0006] Preferably, a gasket is provided at the lower end of the hydraulic cylinder.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows: during the operation of the hydraulic cylinder, the piston rod and the cylinder body of the hydraulic cylinder are sealed by the coordinated use of the sealing tube and the sealing ring, thereby ensuring the working effect of the hydraulic cylinder and achieving a good dustproof effect, thereby preventing dust from affecting the working ability of the hydraulic cylinder. Through the action of the dustproof sealing structure, the dust on the outer wall of the hydraulic cylinder can be scraped off when the piston rod of the hydraulic cylinder is displaced. At the same time, when not in use, the sealing ring can be effectively squeezed to better fill the sealing tube, thereby ensuring that the equipment has a good sealing effect when not in use, thereby preventing dust from being generated and affecting the service life of the hydraulic cylinder. The dustproof sealing structure can be squeezed by the connecting piece when not in use, so that the sealing ring is tightly filled in the sealing tube, while facilitating the connection of other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 It is a plan view of the utility model;

[0010] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0011] Figure 4 It is a schematic diagram of the scraper structure.

[0012] In the figure: 1-hydraulic cylinder, 2-sealing cylinder, 3-sealing ring, 4-dustproof sealing structure, 41-scraper cylinder, 42-connecting rod, 43-support block, 44-spring, 45-support rod, 46-block, 47-pressure plate, 5-connecting piece. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] See also Figure 1-4 The utility model provides a hydraulic cylinder dustproof sealing structure, including a hydraulic cylinder 1, a sealing sleeve 2 is fixedly assembled on the upper end of the hydraulic cylinder 1, the sealing sleeve 2 is sleeved on the outer wall of the piston rod of the hydraulic cylinder 1, a sealing ring 3 is sleeved on the outer wall of the piston rod of the hydraulic cylinder 1, the sealing ring 3 is inserted into the sealing sleeve 2, a dustproof sealing structure 4 is sleeved on the outer wall of the piston rod of the hydraulic cylinder 1, the dustproof sealing structure 4 is assembled on both sides of the inner wall of the hydraulic cylinder 1, and a connecting piece 5 is fixedly assembled on the upper end of the piston rod of the hydraulic cylinder 1.

[0015] During the operation of the hydraulic cylinder 1, the sealing tube 2 and the sealing ring 3 are used in conjunction to seal the piston rod and the cylinder body of the hydraulic cylinder 1, thereby ensuring the working effect of the hydraulic cylinder 1 and achieving a good dustproof effect, thereby preventing dust from affecting the working capacity of the hydraulic cylinder 1. Through the action of the dustproof sealing structure 4, the dust on the outer wall of the hydraulic cylinder 1 can be scraped off when the piston rod of the hydraulic cylinder 1 is displaced. At the same time, when not in use, the sealing ring 3 can be effectively squeezed to better fill the sealing tube 2, thereby ensuring that the equipment has a good sealing effect when not in use and preventing dust from being generated and affecting the service life of the hydraulic cylinder 1. When not in use, the dustproof sealing structure 4 can be squeezed through the connecting piece 5 to control the sealing ring 3 to be tightly filled in the sealing tube 2, thereby facilitating the connection of other components.

[0016] The dustproof sealing structure 4 includes a support rod 45, and the support rods 45 are symmetrically installed on both sides of the inner wall of the hydraulic cylinder 1. The upper ends of the two support rods 45 are fixedly installed with a clamping block 46. The outer walls of the two support rods 45 are both sleeved with a support block 43 and a spring 44. The spring 44 is arranged between the support block 43 and the hydraulic cylinder 1. The surfaces of the two support blocks 43 are fixedly installed with a connecting rod 42. A scraper cylinder 41 and a pressure plate 47 are fixedly installed between the two connecting rods 42. The scraper cylinder 41 and the pressure plate 47 are tightly sleeved on the outer wall of the piston rod of the hydraulic cylinder 1.

[0017] As the piston rod of the hydraulic cylinder 1 moves upward, the connecting member 5 is also moved, thereby canceling the restraining force on the scraper 41. At the same time, according to the elastic force of the spring 44, the push support block 43 is moved upward and clamped at the lower end of the clamping block 46. At the same time, the scraper 41 and the pressure plate 47 are driven upward by the connecting rod 42 to cancel the squeezing effect on the sealing ring 3. The sealing ring 3 is elastically deformed into an initial state, thereby reducing the displacement effect on the piston rod of the hydraulic cylinder 1. At the same time, each time the piston rod of the hydraulic cylinder 1 retracts, the dust on its surface will be scraped off by the scraper 41 and the pressure plate 47.

[0018] A gasket is provided at the lower end of the hydraulic cylinder 1 .

[0019] The gasket plays a role in protecting the hydraulic cylinder 1.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dustproof sealing structure for a hydraulic cylinder, characterized in that: The invention comprises a hydraulic cylinder (1), wherein a sealing sleeve (2) is fixedly mounted on the upper end of the hydraulic cylinder (1), wherein the sealing sleeve (2) is sleeved on the outer wall of the piston rod of the hydraulic cylinder (1), wherein a sealing ring (3) is sleeved on the outer wall of the piston rod of the hydraulic cylinder (1), wherein the sealing ring (3) is inserted into the sealing sleeve (2), wherein a dustproof sealing structure (4) is sleeved on the outer wall of the piston rod of the hydraulic cylinder (1), wherein the dustproof sealing structure (4) is mounted on both sides of the inner wall of the hydraulic cylinder (1), and wherein a connecting piece (5) is fixedly mounted on the upper end of the piston rod of the hydraulic cylinder (1); The dustproof sealing structure (4) comprises a support rod (45), the support rods (45) are symmetrically mounted on both sides of the inner wall of the hydraulic cylinder (1), the upper ends of the two support rods (45) are fixedly mounted with a clamping block (46), the outer walls of the two support rods (45) are sleeved with a support block (43) and a spring (44), the spring (44) is arranged between the support block (43) and the hydraulic cylinder (1), the surfaces of the two support blocks (43) are fixedly mounted with a connecting rod (42), a scraper (41) and a pressure plate (47) are fixedly mounted between the two connecting rods (42), and the scraper (41) and the pressure plate (47) are tightly sleeved on the outer wall of the piston rod of the hydraulic cylinder (1).

2. A dustproof sealing structure for a hydraulic cylinder according to claim 1, characterized in that: A gasket is provided at the lower end of the hydraulic cylinder (1).

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