Sealing assembly for hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinder sealing elements, and discloses a sealing assembly for a hydraulic oil cylinder, which comprises a hydraulic oil cylinder shell, a sealing cover is arranged above the hydraulic oil cylinder shell, an outer protection ring is connected in the sealing cover in a penetrating manner, and a sealing ring mounting ring is fixedly connected in the outer protection ring. A sealing ring is placed on the sealing ring mounting ring, an inner protection ring is in threaded connection with the interior of the outer protection ring, the bottom of the inner protection ring is pressed on the top of the sealing ring mounting ring, anti-skid bolts are in threaded connection with the interior of the outer protection ring and the interior of the inner protection ring, and shaft rods are arranged in the hydraulic oil cylinder shell, the outer protection ring and the inner protection ring; and the upper end of the shaft rod is in threaded connection with the shaft rod head, so that the sealing ring can be better mounted, the sealing ring can be conveniently replaced in the later period, manpower is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinder sealing elements, in particular to a sealing component for a hydraulic oil cylinder. Background Art

[0002] The cylinder, also known as the hydraulic cylinder or hydraulic oil cylinder, is an important actuator in the hydraulic system. Its function is to convert hydraulic energy into linear, swinging and reciprocating mechanical motion. The main raw materials of the hydraulic cylinder are steel and other accessories. The high-pressure cylinder is a key component for large-scale infrastructure equipment such as excavators, ships, marine engineering equipment and industrial equipment. The product is an intermediate product.

[0003] However, when the hydraulic cylinder is actually used, the seals installed therein need to be replaced from time to time. However, when replacing the seals, some parts of the hydraulic cylinder need to be removed to take out the seals. The operation of removing some parts of the hydraulic cylinder is cumbersome, which makes it troublesome to replace the seals and inconvenient to maintain.

[0004] In view of this, the present technical solution proposes a sealing assembly for a hydraulic cylinder to better solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a sealing assembly for a hydraulic cylinder in order to solve the above-mentioned problem.

[0006] The technical solution adopted by the utility model is as follows: a sealing assembly for a hydraulic oil cylinder, comprising a hydraulic oil cylinder housing, a sealing cover is arranged above the hydraulic oil cylinder housing, and an outer protective ring is connected through the inside of the sealing cover, a sealing ring mounting ring is fixedly connected inside the outer protective ring, and a sealing ring is placed on the sealing ring mounting ring, an inner protective ring is threadedly connected inside the outer protective ring, and the bottom of the inner protective ring is pressed on the top of the sealing ring mounting ring;

[0007] The inner threads of the outer protective ring and the inner protective ring are connected with anti-skid bolts, and the inner parts of the hydraulic cylinder housing, the outer protective ring and the inner protective ring are provided with shaft rods, and the upper end of the shaft rod is threadedly connected with a shaft rod head.

[0008] In a preferred embodiment, the hydraulic cylinder housing and the sealing cover are connected around by fastening bolts.

[0009] In a preferred embodiment, the inner wall of the outer protective ring is provided with internal thread teeth above the sealing ring mounting ring, and the lower part of the inner protective ring is provided with an external thread groove adapted to the internal thread teeth, and the external thread groove is threadedly connected to the internal thread teeth.

[0010] In a preferred embodiment, threaded holes adapted to anti-slip bolts are provided at relative positions of the outer protective ring and the inner protective ring, and the anti-slip bolts are threadedly connected in the threaded holes. A sealing gasket is provided on the bolt head of the anti-slip bolt and fits against the outer wall of the outer protective ring.

[0011] In a preferred embodiment, the relative positions of the outer protective ring and the inner protective ring are both provided with positioning indicators for use with them.

[0012] In a preferred embodiment, operating handles are fixedly connected to both sides of the upper side of the outer wall of the inner protective ring.

[0013] In a preferred embodiment, the shaft is in contact with the inner wall of the sealing ring, and the inner diameter of the sealing ring is the same as that of the inner protective ring.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are: it is easier to install the sealing ring, so that when the sealing ring needs to be replaced later, it is more convenient, saving manpower and increasing work efficiency.

[0015] 1. In the utility model, by placing the positioning indicators relatively to each other, the external thread groove can be threadedly connected to the internal thread teeth by operating the hand lever, and at this time, the bottom of the inner protective ring can be squeezed on the top of the sealing ring, so that the sealing ring can be positioned between the sealing ring mounting ring and the inner protective ring.

[0016] 2. In the present invention, the stability of the inner protective ring installed inside the outer protective ring can be increased by threading the shaft rod into the threaded holes provided inside the outer protective ring and the inner protective ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the first state of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the second state of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure of area A in the middle.

[0020] Markings in the figure: 1-hydraulic cylinder housing; 2-fastening bolts; 3-sealing cover; 4-external protective ring; 5-sealing ring mounting ring; 6-internal thread teeth; 7-sealing ring; 8-internal protective ring; 9-external thread groove; 10-anti-slip bolt; 11-positioning indicator; 12-operating handle; 13-shaft rod; 14-shaft rod head. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0022] The following will be combined Figure 1-Figure 3 A sealing assembly for a hydraulic cylinder according to an embodiment of the utility model is described in detail.

[0023] refer to Figure 1-3 As shown, a sealing assembly for a hydraulic cylinder comprises a hydraulic cylinder housing 1, a sealing cover 3 is arranged above the hydraulic cylinder housing 1, the hydraulic cylinder housing 1 and the sealing cover 3 are connected on all sides by fastening bolts 2, an outer protective ring 4 is penetrated and connected inside the sealing cover 3, a sealing ring mounting ring 5 is fixedly connected inside the outer protective ring 4, an inner wall of the outer protective ring 4 is provided with internal thread teeth 6 located above the sealing ring mounting ring 5, a sealing ring 7 is placed on the sealing ring mounting ring 5, an inner thread of the outer protective ring 4 is connected with an inner protective ring 8, and the bottom of the inner protective ring 8 is pressed on the top of the sealing ring mounting ring 5, an external thread groove 9 adapted to the internal thread teeth 6 is provided below the inner protective ring 8, and the external thread groove 9 is threadedly connected to the internal thread teeth 6.

[0024] By cooperating with the external thread groove 9 and the internal thread teeth 6 , the sealing ring 7 can be squeezed and positioned between the sealing ring installation ring 5 and the inner protective ring 8 , and the sealing ring 7 fits with the shaft rod 13 to perform sealing.

[0025] refer to Figure 1-3 As shown, the internal threads of the outer protective ring 4 and the inner protective ring 8 are connected with anti-slip bolts 10, and threaded holes adapted to the anti-slip bolts 10 are provided at relative positions of the outer protective ring 4 and the inner protective ring 8, and the anti-slip bolts 10 are threadedly connected in the threaded holes, and a sealing gasket is arranged on the bolt head of the anti-slip bolt 10 and fits with the outer wall of the outer protective ring 4, and positioning indicators 11 are arranged at relative positions of the outer protective ring 4 and the inner protective ring 8 for use together, and operating handles 12 are fixedly connected to both sides of the upper outer wall of the inner protective ring 8, and a shaft rod 13 is arranged inside the hydraulic cylinder housing 1, the outer protective ring 4 and the inner protective ring 8, and the shaft rod 13 fits with the inner wall of the sealing ring 7, and the sealing ring 7 has the same inner diameter as the inner protective ring 8, and the upper end of the shaft rod 13 is threadedly connected with a shaft rod head 14.

[0026] By threading the shaft rod 13 into the threaded holes provided inside the outer protective ring 4 and the inner protective ring 8, the stability of the inner protective ring 8 installed inside the outer protective ring 4 can be increased. Since the shaft rod head 14 is threadedly connected to the shaft rod 13, the shaft rod head 14 can be easily removed, so that the sealing ring 7 can be better replaced.

[0027] The advantages of the present application are as follows: it is easier to install the sealing ring 7, so that when the sealing ring 7 needs to be replaced later, it is more convenient, saving manpower and increasing work efficiency.

[0028] Working principle: When replacing the sealing ring 7, first remove the shaft head 14 from the shaft 13, then rotate the inner protective ring 8 to one side by operating the hand lever 12, so that the inner protective ring 8 is taken out from the inside of the outer protective ring 4, and then the inner protective ring 8 is removed from the shaft 13. At this time, the sealing ring 7 can be taken out from the sealing ring installation ring 5, and then the sealing ring 7 can be removed from the shaft 13 for replacement. When installing the replaced sealing ring 7, first put the sealing ring 7 on the shaft 13, and then place the sealing ring 7 on the sealing ring installation ring 5. At this time, the inner The protective ring 8 is sleeved on the shaft 13, and then the inner protective ring 8 is inserted into the outer protective ring 4. The positioning indicators 11 on the outer protective ring 4 and the inner protective ring 8 are relatively arranged, and then the inner protective ring 8 is rotated to the other side by operating the hand lever 12, so that the bottom of the inner protective ring 8 is squeezed on the top of the sealing ring 7, and the sealing ring 7 can be positioned between the sealing ring mounting ring 5 and the inner protective ring 8. At this time, the anti-slip bolt 10 is threadedly connected to the threaded holes opened inside the outer protective ring 4 and the inner protective ring 8, and finally the shaft head 14 is threadedly connected to the shaft 13.

[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 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 sealing assembly for a hydraulic cylinder, comprising a hydraulic cylinder housing (1), characterized in that: A sealing cover (3) is arranged above the hydraulic cylinder housing (1), and an outer protective ring (4) is connected to the inside of the sealing cover (3), a sealing ring mounting ring (5) is fixedly connected to the inside of the outer protective ring (4), and a sealing ring (7) is placed on the sealing ring mounting ring (5), an inner protective ring (8) is threadedly connected to the inside of the outer protective ring (4), and the bottom of the inner protective ring (8) is pressed onto the top of the sealing ring mounting ring (5); The outer protective ring (4) and the inner protective ring (8) are internally threadedly connected with anti-slip bolts (10); a shaft (13) is provided inside the hydraulic cylinder housing (1), the outer protective ring (4) and the inner protective ring (8); and a shaft head (14) is threadedly connected to the upper end of the shaft (13).

2. A sealing assembly for a hydraulic cylinder according to claim 1, characterized in that: The hydraulic cylinder housing (1) and the sealing cover (3) are connected around by fastening bolts (2).

3. A sealing assembly for a hydraulic cylinder according to claim 1, characterized in that: The inner wall of the outer protective ring (4) is provided with internal thread teeth (6) above the sealing ring mounting ring (5), and the lower part of the inner protective ring (8) is provided with external thread grooves (9) adapted to the internal thread teeth (6), and the external thread grooves (9) are threadedly connected to the internal thread teeth (6).

4. A sealing assembly for a hydraulic cylinder according to claim 3, characterized in that: The outer protective ring (4) and the inner protective ring (8) are both provided with threaded holes adapted to the anti-slip bolts (10) at relative positions, and the anti-slip bolts (10) are threadedly connected in the threaded holes. A sealing gasket is provided on the bolt head of the anti-slip bolt (10) and fits with the outer wall of the outer protective ring (4).

5. A sealing assembly for a hydraulic cylinder according to claim 3, characterized in that: The relative positions of the outer protective ring (4) and the inner protective ring (8) are both provided with positioning indicator marks (11) for use in conjunction therewith.

6. A sealing assembly for a hydraulic cylinder according to claim 3, characterized in that: Operating handles (12) are fixedly connected to both sides of the upper side of the outer wall of the inner protective ring (8).

7. A sealing assembly for a hydraulic cylinder according to claim 1, characterized in that: The shaft (13) is in contact with the inner wall of the sealing ring (7), and the sealing ring (7) and the inner protective ring (8) have the same inner diameter.

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