High-sealing-performance hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a high-sealing-performance hydraulic oil cylinder which comprises a cylinder body. The telescopic rod is arranged in the cylinder body; the oil inlet pipe is arranged on the front face of the cylinder body, and a sealing mechanism is arranged in the cylinder body; the sealing mechanism comprises a sealing part, a damage prevention part and a leakage prevention part. Through the arrangement of a bottom block, a supporting block, a rotating shaft and an auxiliary wheel, when the telescopic rod stretches out and draws back, the surface of the telescopic rod can drive the auxiliary wheel to conduct auxiliary rolling, the friction force generated when the telescopic rod stretches out and draws back can be reduced, and therefore the service life of the telescopic rod is prolonged; through the arrangement of a rubber scraping sleeve and an oil guide pipe, when the telescopic rod stretches out of the interior of the cylinder body, the rubber scraping sleeve can block and scrape oil on the surface of the telescopic rod, lubricating oil scraped by the rubber scraping sleeve can be drained into the cylinder body through a drainage groove and the oil guide pipe to be reused, waste of the lubricating oil is reduced, and meanwhile the lubricating oil is saved. And waste caused by oil leakage can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a high-sealing hydraulic oil cylinder. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is smooth, so it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application, and other devices are indispensable.

[0003] The Chinese patent provides a high-sealing hydraulic cylinder, with the publication number CN204152889U, including a cylinder barrel, a cylinder tail, a guide sleeve, a piston and a piston rod; the cylinder barrel includes a first cylinder body and a second cylinder body; the cylinder tail and the guide sleeve are respectively arranged at the two ends of the cylinder barrel; a piston is slidably arranged in the cylinder barrel, a piston sealing ring is arranged between the piston and the inner wall of the cylinder barrel, and an O-ring is arranged between the piston rod and the piston; a Sterling seal is arranged between the piston rod and the guide sleeve, and a dust ring is fixed at the right end of the guide sleeve; an installation channel is opened in the piston rod. The utility model is respectively provided with a sealing end cover, a piston sealing ring, an O-ring, a Sterling seal and a dust ring to ensure the sealing of each cavity in the oil cylinder; the various components of the oil cylinder are connected by bolts, screws, etc., which are convenient for disassembly and installation when the sealing ring is installed, and also make the oil cylinder easy to transport; the hydraulic cylinder has a simpler structure, a smaller volume, and is more convenient to control.

[0004] The device is provided with a sealing end cover, a piston sealing ring, an O-ring, a Sterling seal and a dust ring to ensure the sealing of each cavity in the oil cylinder; the various components of the oil cylinder are connected by bolts, screws, etc., which are convenient for disassembly and installation when the sealing ring is installed, and also make the oil cylinder easy to transport. However, when the piston rod is retracted, direct contact with the guide sleeve is likely to increase the friction of the piston rod when it is retracted, which is likely to cause damage to the piston rod and the guide sleeve in the long run. For this reason, it is necessary to provide a high-sealing hydraulic cylinder. Utility Model Content

[0005] The utility model aims to provide a high-sealing hydraulic cylinder to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-sealing hydraulic cylinder, comprising a cylinder body; a telescopic rod arranged inside the cylinder body; an oil inlet pipe arranged on the front side of the cylinder body, a sealing mechanism being arranged inside the cylinder body; the sealing mechanism comprising a sealing part, an anti-damage part and an anti-leakage part, the sealing part being arranged at the left end of the anti-damage part, the anti-leakage part being arranged at the right end of the anti-damage part, the sealing part comprising a sealing ring and a partition, a telescopic cavity being opened inside the cylinder body, the surface of the partition being fixedly connected to the inner wall of the telescopic cavity; the anti-damage part comprising auxiliary wheels, there being four groups of auxiliary wheels in total, the four groups of auxiliary wheels being respectively arranged around the telescopic rod; the anti-leakage part comprising a rubber scraper sleeve and an oil guide pipe, the inner wall of the rubber scraper sleeve being sealingly and slidably connected to the surface of the telescopic rod.

[0007] Preferably, a piston is provided on the left side of the telescopic rod, the right side of the piston is fixedly connected to the left side of the telescopic rod, and the surface of the piston is slidably connected to the inner wall of the telescopic cavity.

[0008] Preferably, a through groove is provided on the surface of the partition, the inner wall of the through groove is fixedly connected to the surface of the sealing ring, and the inner wall of the sealing ring is sealingly and slidably connected to the surface of the telescopic rod.

[0009] Preferably, a bottom block is provided on the inner wall of the telescopic chamber inside the cylinder body, the connecting surface of the bottom block is fixedly connected to the inner wall of the telescopic chamber, the other connecting surface of the bottom block is provided with a support block, the connecting surface of the support block is fixedly connected to the other connecting surface of the bottom block, the other connecting surface of the support block is provided with a rotating shaft, the surface of the rotating shaft is fixedly connected, and the rotating surfaces at both ends of the rotating shaft are rotatably connected to the surface of the auxiliary wheel.

[0010] Preferably, a guide groove is provided inside the cylinder body, the inner wall of the guide groove is fixedly connected to the surface of the oil guide pipe, and the other end of the oil guide pipe is connected to the inner wall of the left end of the telescopic chamber.

[0011] Preferably, a telescopic groove is opened on the right side of the cylinder body, the inner wall of the telescopic groove is fixedly connected to the surface of the rubber scraper sleeve, a dustproof sealing sleeve is arranged on the right side of the cylinder body, the left side of the dustproof sealing sleeve is fixedly connected to the right side of the cylinder body, and the inner wall of the dustproof sealing sleeve is sealingly and slidably connected to the surface of the telescopic rod.

[0012] Preferably, a connecting block is provided on the right side of the telescopic rod, and the left side of the connecting block is fixedly connected to the right side of the telescopic rod. A connecting ring is provided on the right side of the connecting block, and the left side of the connecting ring is fixedly connected to the right side of the connecting block.

[0013] Preferably, a fixing block is provided on the left side of the cylinder body, and the right side of the fixing block is fixedly connected to the left side of the cylinder body. A connecting column is provided on the left side of the fixing block, and the right side of the connecting column is fixedly connected to the left side of the fixing block.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1) The high-sealing hydraulic cylinder, through the arrangement of the bottom block, the support block, the rotating shaft and the auxiliary wheel, when the telescopic rod is being extended or retracted, the surface of the telescopic rod can drive the auxiliary wheel to perform auxiliary rolling, so that the friction force of the telescopic rod when being extended or retracted can be reduced, thereby increasing the service life of the telescopic rod.

[0016] 2) The highly sealed hydraulic cylinder, through the provision of a rubber scraper sleeve and an oil guide tube, when the telescopic rod is extended from the interior of the cylinder body, the rubber scraper sleeve can block and scrape off the oil on the surface of the telescopic rod. By utilizing the drainage groove and the oil guide tube, the lubricating oil scraped off by the rubber scraper sleeve can be drained into the cylinder body for reuse, thereby reducing the waste of lubricating oil and preventing oil leakage that causes waste.

[0017] 3) The high-sealing hydraulic cylinder can improve the sealing performance of the hydraulic cylinder when in use by arranging the sealing ring, the partition plate and the dustproof sealing sleeve, so that the hydraulic cylinder has better sealing performance when in use and will not leak oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall right side structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0021] Figure 4 For this utility model Figure 3 A magnified view of the structure at center A;

[0022] Figure 5 For this utility model Figure 3 A magnified view of the structure at point B.

[0023] In the figure: 1 cylinder body, 2 telescopic rod, 3 connecting block, 4 connecting ring, 5 fixing block, 6 connecting column, 7 oil inlet pipe, 8 sealing mechanism, 801 piston, 802 sealing ring, 803 partition plate, 804 bottom block, 805 supporting block, 806 rotating shaft, 807 auxiliary wheel, 808 oil guide pipe, 809 rubber scraper sleeve, 810 dustproof sealing sleeve. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1

[0026] Combination Figure 1-Figure 5 A high-sealing hydraulic cylinder comprises a cylinder body 1; a telescopic rod 2 is arranged inside the cylinder body 1, a connecting block 3 is arranged on the right side of the telescopic rod 2, the left side of the connecting block 3 is fixedly connected to the right side of the telescopic rod 2, a connecting ring 4 is arranged on the right side of the connecting block 3, the left side of the connecting ring 4 is fixedly connected to the right side of the connecting block 3, a fixing block 5 is arranged on the left side of the cylinder body 1, the right side of the fixing block 5 is fixedly connected to the left side of the cylinder body 1, a connecting column 6 is arranged on the left side of the fixing block 5, and the right side of the connecting column 6 is fixedly connected to the left side of the fixing block 5; an oil inlet pipe 7 is arranged on the front side of the cylinder body 1, and a sealing mechanism 8 is arranged inside the cylinder body 1;

[0027] Furthermore: through the arrangement of the rubber scraper sleeve 809 and the oil guide tube 808, when the telescopic rod 2 is extended from the interior of the cylinder body 1, the rubber scraper sleeve 809 can block and scrape off the oil on the surface of the telescopic rod 2. By utilizing the drainage groove and the oil guide tube 808, the lubricating oil scraped off by the rubber scraper sleeve 809 can be drained into the cylinder body 1 for reuse, thereby reducing the waste of lubricating oil and preventing oil leakage that causes waste.

[0028] Embodiment 2

[0029] See also Figure 3-Figure 5, and on the basis of Example 1, it is further obtained that the sealing mechanism 8 includes a sealing part, an anti-damage part and an anti-leakage part, the sealing part is arranged at the left end of the anti-damage part, and the anti-leakage part is arranged at the right end of the anti-damage part, the sealing part includes a sealing ring 802 and a partition 803, a telescopic cavity is opened inside the cylinder body 1, and the surface of the partition 803 is fixedly connected to the inner wall of the telescopic cavity; the anti-damage part includes an auxiliary wheel 807, and there are four groups of auxiliary wheels 807, and the four groups of auxiliary wheels 807 are respectively arranged around the telescopic rod 2; the anti-leakage part includes a rubber scraper sleeve 809 and an oil guide pipe 808, the inner wall of the rubber scraper sleeve 809 is sealed and slidably connected to the surface of the telescopic rod 2, a piston 801 is arranged on the left side of the telescopic rod 2, the right side of the piston 801 is fixedly connected to the left side of the telescopic rod 2, and the surface of the piston 801 is slidably connected to the inner wall of the telescopic cavity. A through groove is provided on the surface of the partition 803, and the inner wall of the through groove is fixedly connected to the surface of the sealing ring 802, and the inner wall of the sealing ring 802 is sealingly and slidably connected to the surface of the telescopic rod 2. A bottom block 804 is provided on the inner wall of the telescopic chamber inside the cylinder body 1, and the connecting surface of the bottom block 804 is fixedly connected to the inner wall of the telescopic chamber. A support block 805 is provided on the other connecting surface of the bottom block 804, and the connecting surface of the support block 805 is fixedly connected to the other connecting surface of the bottom block 804. A rotating shaft 806 is provided on the other connecting surface of the support block 805, and the rotating shaft 806 surface is fixedly connected. The rotating surfaces at both ends of the shaft 806 are rotatably connected to the surface of the auxiliary wheel 807, a guide groove is opened inside the cylinder body 1, the inner wall of the guide groove is fixedly connected to the surface of the oil guide pipe 808, the other end of the oil guide pipe 808 is connected to the inner wall of the left end of the telescopic chamber, a telescopic groove is opened on the right side of the cylinder body 1, the inner wall of the telescopic groove is fixedly connected to the surface of the rubber scraper sleeve 809, a dustproof sealing sleeve 810 is arranged on the right side of the cylinder body 1, the left side of the dustproof sealing sleeve 810 is fixedly connected to the right side of the cylinder body 1, and the inner wall of the dustproof sealing sleeve 810 is sealingly and slidably connected to the surface of the telescopic rod 2.

[0030] Furthermore: through the arrangement of the bottom block 804, the support block 805, the rotating shaft 806 and the auxiliary wheel 807, when the telescopic rod 2 is being extended or retracted, the surface of the telescopic rod 2 can drive the auxiliary wheel 807 to perform auxiliary rolling, so that the friction force of the telescopic rod 2 during extension or retraction can be reduced, thereby increasing the service life of the telescopic rod 2; through the arrangement of the sealing ring 802, the partition plate 803 and the dustproof sealing sleeve 810, the sealing performance of the hydraulic cylinder during use can be improved, so that the hydraulic cylinder has better sealing performance during use and there will be no oil leakage.

[0031] During actual operation, when the telescopic rod 2 is being extended or retracted, the surface of the telescopic rod 2 can drive the auxiliary wheel 807 to perform auxiliary rolling, so that the friction force of the telescopic rod 2 during extension and retraction can be reduced, so that the telescopic rod 2 can be smoothly extended and not worn. When the telescopic rod 2 is extended from the inside of the cylinder body 1, the rubber scraper sleeve 809 can block and scrape off the oil on the surface of the telescopic rod 2. By utilizing the drainage groove and the oil guide pipe 808, the lubricating oil scraped off by the rubber scraper sleeve 809 can be drained into the cylinder body 1 for reuse. By arranging the sealing ring 802, the partition plate 803 and the dustproof sealing sleeve 810, the sealing performance of the hydraulic cylinder during use can be improved, so that the hydraulic cylinder has better sealing performance during use and there will be no oil leakage.

[0032] Although the 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 high-sealing hydraulic cylinder, comprising a cylinder body (1); a telescopic rod (2) arranged inside the cylinder body (1); and an oil inlet pipe (7) arranged on the front side of the cylinder body (1), characterized in that: A sealing mechanism (8) is provided inside the cylinder body (1); The sealing mechanism (8) comprises a sealing portion, an anti-damage portion and an anti-leakage portion, the sealing portion is arranged at the left end of the anti-damage portion, and the anti-leakage portion is arranged at the right end of the anti-damage portion, the sealing portion comprises a sealing ring (802) and a partition (803), a telescopic cavity is provided inside the cylinder body (1), and the surface of the partition (803) is fixedly connected to the inner wall of the telescopic cavity; The anti-damage part comprises auxiliary wheels (807), and there are four groups of auxiliary wheels (807) in total. The four groups of auxiliary wheels (807) are respectively arranged around the telescopic rod (2); the anti-leakage part comprises a rubber scraper sleeve (809) and an oil guide pipe (808), and the inner wall of the rubber scraper sleeve (809) is sealingly and slidably connected to the surface of the telescopic rod (2).

2. A high-sealing hydraulic cylinder according to claim 1, characterized in that: A piston (801) is arranged on the left side of the telescopic rod (2); the right side of the piston (801) is fixedly connected to the left side of the telescopic rod (2); and the surface of the piston (801) is slidably connected to the inner wall of the telescopic cavity.

3. The high-sealing hydraulic cylinder according to claim 1, characterized in that: A through groove is provided on the surface of the partition plate (803), the inner wall of the through groove is fixedly connected to the surface of the sealing ring (802), and the inner wall of the sealing ring (802) is sealingly and slidably connected to the surface of the telescopic rod (2).

4. The high-sealing hydraulic cylinder according to claim 1, characterized in that: A bottom block (804) is arranged on the inner wall of the telescopic chamber inside the cylinder body (1); a connecting surface of the bottom block (804) is fixedly connected to the inner wall of the telescopic chamber; a supporting block (805) is arranged on the other connecting surface of the bottom block (804); a connecting surface of the supporting block (805) is fixedly connected to the other connecting surface of the bottom block (804); a rotating shaft (806) is arranged on the other connecting surface of the supporting block (805); a surface of the rotating shaft (806) is fixedly connected; and rotating surfaces at both ends of the rotating shaft (806) are rotatably connected to the surface of an auxiliary wheel (807).

5. The high-sealing hydraulic cylinder according to claim 1, characterized in that: A guide groove is provided inside the cylinder body (1), the inner wall of the guide groove is fixedly connected to the surface of an oil guide pipe (808), and the other end of the oil guide pipe (808) is connected to the inner wall of the left end of the telescopic chamber.

6. The high-sealing hydraulic cylinder according to claim 1, characterized in that: A telescopic groove is provided on the right side of the cylinder body (1), the inner wall of the telescopic groove is fixedly connected to the surface of the rubber scraper sleeve (809), a dustproof sealing sleeve (810) is provided on the right side of the cylinder body (1), the left side of the dustproof sealing sleeve (810) is fixedly connected to the right side of the cylinder body (1), and the inner wall of the dustproof sealing sleeve (810) is sealingly and slidably connected to the surface of the telescopic rod (2).

7. The high-sealing hydraulic cylinder according to claim 1, characterized in that: A connecting block (3) is arranged on the right side of the telescopic rod (2), and the left side of the connecting block (3) is fixedly connected to the right side of the telescopic rod (2). A connecting ring (4) is arranged on the right side of the connecting block (3), and the left side of the connecting ring (4) is fixedly connected to the right side of the connecting block (3).

8. The high-sealing hydraulic cylinder according to claim 1, characterized in that: A fixing block (5) is arranged on the left side of the cylinder body (1), and the right side of the fixing block (5) is fixedly connected to the left side of the cylinder body (1). A connecting column (6) is arranged on the left side of the fixing block (5), and the right side of the connecting column (6) is fixedly connected to the left side of the fixing block (5).

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