Hydraulic oil cylinder with dustproof structure

Abstract

The utility model provides a hydraulic oil cylinder with a dustproof structure, and particularly relates to the technical field of hydraulic oil cylinders, the hydraulic oil cylinder comprises a hydraulic oil cylinder body, a dustproof mechanism, a fixing mechanism and a ventilation mechanism, an end cover is fixedly connected above the hydraulic oil cylinder body, the hydraulic oil cylinder with the dustproof structure is characterized in that a corrugated rubber sleeve is sleeved on the outer side of a piston rod; the piston rod is sleeved with the lantern rings, the piston rod can drive the corrugated rubber sleeve to stretch out and draw back when stretching out and drawing back, the lantern rings can prevent the situation that the corrugated rubber sleeve deviates left and right, the two connecting rings are connected with the connecting column and the end cover correspondingly after sleeving is completed, and then the corrugated rubber sleeve is fixed through the hoop; the corrugated rubber sleeve is arranged in the hydraulic oil cylinder body, dust or water can be better prevented from entering the hydraulic oil cylinder body, the two through holes are formed, when the corrugated rubber sleeve shrinks and extends, ventilation is conducted through the through holes, and the plug and the dustproof cotton can prevent dust from entering the hydraulic oil cylinder body.

Description

Technical Field

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

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It is commonly used in various types of construction machinery and agricultural machinery.

[0003] The authorization announcement number is CN 220081837 U, which discloses a hydraulic cylinder with a dustproof structure, including a corrugated rubber sheet, the width ends of the corrugated rubber sheet are bonded and fixed to each other to form a rubber bellows, the corrugated rubber sheet is sleeved on the outer side of the piston rod of the hydraulic cylinder, the outer wall of one end of the piston rod away from the cylinder body of the hydraulic cylinder is fixedly sleeved with a collar, one end of the rubber bellows is sleeved on the end of the cylinder body, the other end of the rubber bellows is sleeved on the collar, and the outer walls of both ends of the rubber bellows are fixedly sleeved with clamps; in the utility model, the rubber bellows can effectively protect the piston rod from dust, and during installation, the corrugated rubber sheet is wrapped around the piston rod, and the two width edges of the corrugated rubber sheet are bonded by glue to form the rubber bellows, and finally the two ends of the rubber bellows are fixed to the cylinder body and the collar by using the clamp, which is simple and convenient to operate. However, when the device is in use, the piston rod contracts and cannot limit the simple upward and downward expansion and contraction of the corrugated rubber sheet, which may be offset, thus causing wear of the corrugated rubber sheet. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic cylinder with a dustproof structure to solve the problem that when the device proposed in the above background technology is in use, the piston rod contracts and cannot limit the simple upward and downward extension of the corrugated rubber sheet, which may cause deviation and cause wear of the corrugated rubber sheet.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic cylinder with a dustproof structure, comprising a hydraulic cylinder body, a dustproof mechanism, a fixing mechanism and a ventilation mechanism, an end cover is fixedly connected to the top of the hydraulic cylinder body, a piston rod is slidably connected to the inner side of the hydraulic cylinder body, a connecting column is fixedly connected to the outer surface of the piston rod, a dustproof mechanism is arranged on the outer side of the piston rod, a fixing mechanism is arranged on the outer side of the end cover, and a ventilation mechanism is arranged above the connecting column.

[0006] Preferably, the dustproof mechanism includes a corrugated rubber sleeve, a fixed column, a ring and a connecting ring. The outer side of the piston rod is provided with a corrugated rubber sleeve, the inner side of the corrugated rubber sleeve is fixedly connected to the fixed column, one end of the fixed column is fixedly connected to the ring, and the upper and lower ends of the corrugated rubber sleeve are integrally formed with connecting rings.

[0007] Preferably, the collar is slidably connected to the piston rod, and the fixing columns are distributed at equal intervals on the outer wall of the collar.

[0008] Preferably, the fixing mechanism includes a clamp, a bolt, a mounting groove and a sealing ring, a clamp is provided on the outer side of the end cover, a bolt is threadedly connected to the outer side of the clamp, a mounting groove is provided on the inner side of the clamp, and a sealing ring is inserted into the inner side of the mounting groove.

[0009] Preferably, two clamps are provided, and one side of the sealing ring is tightly fitted with the inner wall of the installation groove.

[0010] Preferably, the ventilation mechanism includes a through hole, a screw plug and dust-proof cotton, a through hole is opened above the connecting column, the inner side of the through hole is threadedly connected with a screw plug, the inner side of the screw plug is provided with dust-proof cotton, and two through holes are provided.

[0011] Compared with the prior art, the beneficial effect of the utility model is that when the hydraulic cylinder with a dustproof structure is in use, the corrugated rubber sleeve is sleeved on the outer side of the piston rod, so that the sleeve is sleeved on the piston rod, and when the piston rod is extended or retracted, the corrugated rubber sleeve will be driven to extend or retract, wherein the sleeve can prevent the corrugated rubber sleeve from deviating left and right, thereby preventing the piston rod from rubbing against the corrugated rubber sleeve and causing damage to the corrugated rubber sleeve. After the corrugated rubber sleeve is sleeved, the two connecting rings are respectively connected to the connecting column and the end cover, and then the corrugated rubber sleeve is fixed with a clamp, and the setting of the sealing ring can better prevent dust or water from entering the interior of the hydraulic cylinder body, and two through holes are provided. When the corrugated rubber sleeve contracts and extends, air is exchanged through the through holes, and the screw plug and dustproof cotton can prevent dust from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the appearance of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the nail plate and the first iron sheet of the utility model being used in coordination with each other;

[0014] Figure 3 This is a schematic diagram of the structure of the second iron sheet and the card slot used in conjunction with each other in the utility model;

[0015] Figure 4 The utility model is a schematic diagram of the structure of the book cover and the second iron sheet used in conjunction with each other.

[0016] In the figure: 1. hydraulic cylinder body; 2. end cover; 3. piston rod; 4. connecting column; 5. dustproof mechanism; 501. corrugated rubber sleeve; 502. fixing column; 503. collar; 504. connecting ring; 6. fixing mechanism; 601. clamp; 602. bolt; 603. mounting groove; 604. sealing ring; 7. ventilation mechanism; 701. through hole; 702. screw plug; 703. dustproof cotton. DETAILED DESCRIPTION

[0017] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0018] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms 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", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] See also Figure 1-4The utility model discloses a hydraulic cylinder with a dustproof structure, comprising a hydraulic cylinder body 1, a dustproof mechanism 5, a fixing mechanism 6 and a ventilation mechanism 7. An end cover 2 is fixedly connected to the top of the hydraulic cylinder body 1, a piston rod 3 is slidably connected to the inner side of the hydraulic cylinder body 1, a connecting column 4 is fixedly connected to the outer surface of the piston rod 3, a dustproof mechanism 5 is arranged on the outer side of the piston rod 3, a fixing mechanism 6 is arranged on the outer side of the end cover 2, and a ventilation mechanism 7 is arranged above the connecting column 4.

[0023] In order to prevent dust from reaching the connection of the piston rod 3, the dustproof mechanism 5 includes a corrugated rubber sleeve 501, a fixed column 502, a ring 503 and a connecting ring 504. The outer side of the piston rod 3 is sleeved with a corrugated rubber sleeve 501, the inner side of the corrugated rubber sleeve 501 is fixedly connected to the fixed column 502, one end of the fixed column 502 is fixedly connected to the ring 503, and the upper and lower ends of the corrugated rubber sleeve 501 are integrally formed with a connecting ring 504. When in use, the corrugated rubber sleeve 501 is sleeved on the outer side of the piston rod 3, so that the ring 503 is sleeved on the piston rod 3, and when the piston rod 3 is extended or retracted, the corrugated rubber sleeve 501 will be driven to extend or retract, wherein the ring 503 can prevent the corrugated rubber sleeve 501 from deviating left and right, thereby preventing the piston rod 3 from rubbing against the corrugated rubber sleeve 501 and causing damage to the corrugated rubber sleeve 501.

[0024] Furthermore, the collar 503 is slidably connected to the piston rod 3 , and the fixing columns 502 are distributed at equal intervals on the outer wall of the collar 503 .

[0025] In order to facilitate the fixation of the corrugated rubber sleeve 501, the fixing mechanism 6 includes a clamp 601, a bolt 602, a mounting groove 603 and a sealing ring 604. A clamp 601 is arranged on the outer side of the end cover 2, and the outer side of the clamp 601 is threadedly connected with the bolt 602. A mounting groove 603 is arranged on the inner side of the clamp 601, and a sealing ring 604 is inserted into the inner side of the mounting groove 603. After the corrugated rubber sleeve 501 is installed, the two connecting rings 504 are respectively connected to the connecting column 4 and the end cover 2, and then the corrugated rubber sleeve 501 is fixed with the clamp 601. The setting of the sealing ring 604 can better prevent dust or water from entering the hydraulic cylinder body 1.

[0026] In order to facilitate fixing of the corrugated rubber sleeve 501 , two clamps 601 are provided, and one side of the sealing ring 604 is tightly fitted with the inner wall of the installation groove 603 .

[0027] To facilitate air intake, the ventilation mechanism 7 includes a through hole 701, a screw plug 702 and dust-proof cotton 703. A through hole 701 is opened above the connecting column 4. The inner side of the through hole 701 is threadedly connected with a screw plug 702. The inner side of the screw plug 702 is provided with dust-proof cotton 703. There are two through holes 701. When the corrugated rubber sleeve 501 contracts and extends, air is exchanged through the through hole 701, and the screw plug 702 and dust-proof cotton 703 can prevent dust from entering.

[0028] Working principle: When in use, the corrugated rubber sleeve 501 is sleeved on the outside of the piston rod 3, so that the ring 503 is sleeved on the piston rod 3, and when the piston rod 3 is extended or retracted, the corrugated rubber sleeve 501 will be driven to extend or retract, wherein the ring 503 can prevent the corrugated rubber sleeve 501 from deviating left or right, thereby preventing the piston rod 3 from rubbing against the corrugated rubber sleeve 501 and causing damage to the corrugated rubber sleeve 501. After the corrugated rubber sleeve 501 is sleeved, the two connecting rings 504 are respectively connected to the connecting column 4 and the end cover 2, and then the corrugated rubber sleeve 501 is fixed with a clamp 601. The setting of the sealing ring 604 can better prevent dust or water from entering the interior of the hydraulic cylinder body 1. Two through holes 701 are provided. When the corrugated rubber sleeve 501 contracts and extends, ventilation is carried out through the through holes 701, and the screw plug 702 and the dust-proof cotton 703 can prevent dust from entering.

[0029] 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 implementation rules 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 hydraulic cylinder with a dustproof structure, comprising a hydraulic cylinder body (1), a dustproof mechanism (5), a fixing mechanism (6) and a venting mechanism (7), characterized in that: The upper part of the hydraulic cylinder body (1) is fixedly connected with an end cover (2), the inner side of the hydraulic cylinder body (1) is slidably connected with a piston rod (3), the outer side surface of the piston rod (3) is fixedly connected with a connecting column (4), the outer side of the piston rod (3) is provided with a dustproof mechanism (5), the outer side of the end cover (2) is provided with a fixing mechanism (6), the upper part of the connecting column (4) is provided with a venting mechanism (7), the dustproof mechanism (5) comprises a corrugated rubber sleeve (501), a fixing column (502), a collar ( 503) and a connecting ring (504), the outer side of the piston rod (3) is sleeved with a corrugated rubber sleeve (501), the inner side of the corrugated rubber sleeve (501) is fixedly connected with a fixing column (502), one end of the fixing column (502) is fixedly connected with a sleeve ring (503), the upper and lower ends of the corrugated rubber sleeve (501) are integrally formed with a connecting ring (504), the sleeve ring (503) is slidably connected to the piston rod (3), and the fixing columns (502) are evenly spaced on the outer wall of the sleeve ring (503).

2. The hydraulic cylinder with a dustproof structure according to claim 1, characterized in that: The fixing mechanism (6) comprises a clamp (601), a bolt (602), a mounting groove (603) and a sealing ring (604); the outer side of the end cover (2) is provided with a clamp (601); the outer side of the clamp (601) is threadedly connected with a bolt (602); the inner side of the clamp (601) is provided with a mounting groove (603); the inner side of the mounting groove (603) is plugged with a sealing ring (604).

3. The hydraulic cylinder with a dustproof structure according to claim 2, characterized in that: Two clamps (601) are provided, and one side of the sealing ring (604) is tightly fitted to the inner wall of the installation groove (603).

4. The hydraulic cylinder with a dustproof structure according to claim 1, characterized in that: The ventilation mechanism (7) comprises a through hole (701), a screw plug (702) and dustproof cotton (703); a through hole (701) is provided above the connecting column (4); a screw plug (702) is threadedly connected to the inner side of the through hole (701); dustproof cotton (703) is arranged on the inner side of the screw plug (702); and two through holes (701) are provided.

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