Hydraulic oil cylinder with multi-sealing design

Abstract

The utility model provides a hydraulic oil cylinder with multiple sealing design, and particularly relates to the technical field of hydraulic oil cylinders, the hydraulic oil cylinder comprises a hydraulic oil cylinder body, a sealing mechanism and a locking mechanism, the hydraulic oil cylinder body comprises a piston rod and an end cover, the hydraulic oil cylinder with the multiple sealing design is characterized in that a sealing ring is sleeved on the outer side of the piston rod, and the sealing ring is arranged in a fixing groove; the piston rod is arranged in the fixing groove, then the first threaded groove is connected in a threaded mode, the fastener is screwed in, the sealing ring can be extruded, the sealing ring is deformed, the sealing ring is connected with the outer side of the fixing groove and the outer side of the piston rod more tightly, and therefore the better sealing effect can be guaranteed; the sleeve ring is arranged on the outer side of the fastener in a sleeving mode, and a second tooth groove is meshed with a first tooth groove; the fixing plate is arranged in the limiting groove, so that the lantern ring can be limited, then the opening bolt is inserted into the through hole and penetrates through the through groove, the lantern ring is fixed, and the lantern ring is meshed with the fastener, so that the fastener is locked and fixed, and better sealing is achieved.

Description

Technical Field

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

[0002] A hydraulic cylinder is a device that uses hydraulic oil to convert force. It consists of a piston, a piston rod, a cylinder and a hydraulic oil seal assembly. The hydraulic cylinder converts force into linear motion through the hydraulic oil in the hydraulic system. The main working principle of the hydraulic cylinder is to use hydraulic force transmission to achieve force conversion. When the hydraulic oil in the hydraulic system is supplied to a chamber of the cylinder by a pressure device (such as a hydraulic pump), the hydraulic oil pressure acts on the piston, thereby generating a linear thrust, which is transmitted to the external workload through the piston rod.

[0003] The hydraulic cylinder seals the port of the cylinder barrel with a sealing ring. When the piston rod reciprocates, the sealing ring will loosen and cause oil leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic cylinder with a multiple sealing design to solve the problem in the above background technology that the hydraulic cylinder seals the port of the cylinder barrel through a sealing ring, but when the piston rod reciprocates, the sealing ring will loosen and cause oil leakage.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic cylinder with a multiple sealing design, comprising a hydraulic cylinder body, a sealing mechanism and a locking mechanism, the hydraulic cylinder body comprising a piston rod and an end cover, the inner side of the hydraulic cylinder body being provided with a piston rod, the upper side of the hydraulic cylinder body being connected with an end cover by bolts, the inner side of the end cover being provided with a sealing mechanism, the sealing mechanism comprising a fastener, and the outer side of the fastener being provided with a locking mechanism.

[0006] Preferably, the sealing mechanism includes a fixing groove, a sealing ring, a first thread groove and a second thread groove, a fixing groove is opened on the inner side of the end cover, a sealing ring is placed on the inner side of the fixing groove, a first thread groove is opened on the inner cavity side wall of the fixing groove, the outer side of the first thread groove is threadedly connected to a fastener, and a second thread groove is opened on the outer side of the fastener.

[0007] Preferably, the outer side of the sealing ring is tightly fitted with the fixing groove, and the inner side of the sealing ring is tightly fitted with the piston rod.

[0008] Preferably, four sealing rings are provided, and the fastener is threadedly connected to the first thread groove through the second thread groove.

[0009] Preferably, the locking mechanism includes a first tooth groove, a ring, a second tooth groove, a fixing plate, a through groove, a limiting groove, a through hole and an open latch, the outer side of the fastener is provided with a first tooth groove, the outer side of the first tooth groove is sleeved with a ring, the inner side of the ring is provided with a second tooth groove, the outer side of the ring is fixedly connected to a fixing plate, the outer side of the fixing plate is provided with a through groove, the top of the end cover is provided with a limiting groove, the outer side of the limiting groove is provided with a through hole, and the inner side of the through hole is plugged with an open latch.

[0010] Preferably, the collar is meshed and connected with the first tooth groove via the second tooth groove, and the fixing plate is fixedly connected with the limiting groove via an open latch.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the hydraulic oil cylinder with multiple sealing designs, the sealing ring is sleeved on the outside of the piston rod, and the sealing ring is placed in the fixed groove, and then the fastener is sleeved on the outside of the piston rod, and then the first thread groove is threadedly connected, and the fastener is screwed in, so that the sealing ring can be squeezed, so that the sealing ring is deformed, and the sealing ring is more tightly connected to the fixed groove and the outside of the piston rod, which can ensure a better sealing effect, and the ring is sleeved on the outside of the fastener so that the second tooth groove is meshed with the first tooth groove, so that the fixing plate is in the limiting groove, so that the ring can be limited, and then the open pin is inserted into the through hole and passes through the through groove to fix the ring, so that the fastener is locked and fixed by the engagement of the ring with the fastener, thereby achieving better sealing. 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 sealing ring and the second thread groove of the utility model used in conjunction with each other;

[0014] Figure 3 This is a schematic diagram of the sealing mechanism structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the locking mechanism structure of the utility model.

[0016] In the figure: 1. hydraulic cylinder body; 2. piston rod; 3. end cover; 4. sealing mechanism; 401. fixing groove; 402. sealing ring; 403. first thread groove; 404. fastener; 405. second thread groove; 5. locking mechanism; 501. first tooth groove; 502. collar; 503. second tooth groove; 504. fixing plate; 505. through groove; 506. limiting groove; 507. through hole; 508. opening latch. 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 1-4 The utility model discloses a hydraulic cylinder with a multiple sealing design, comprising a hydraulic cylinder body 1, a sealing mechanism 4 and a locking mechanism 5. The hydraulic cylinder body 1 comprises a piston rod 2 and an end cover 3. The piston rod 2 is arranged on the inner side of the hydraulic cylinder body 1. The end cover 3 is connected to the upper side of the hydraulic cylinder body 1 by bolts. The sealing mechanism 4 is arranged on the inner side of the end cover 3. The sealing mechanism 4 comprises a fastener 404. The locking mechanism 5 is arranged on the outer side of the fastener 404.

[0023] In order to achieve a better sealing effect, the sealing mechanism 4 includes a fixed groove 401, a sealing ring 402, a first thread groove 403 and a second thread groove 405. A fixed groove 401 is provided on the inner side of the end cover 3, and a sealing ring 402 is placed on the inner side of the fixed groove 401. A first thread groove 403 is provided on the inner cavity side wall of the fixed groove 401. A fastener 404 is threadedly connected to the outer side of the first thread groove 403, and a second thread groove 405 is provided on the outer side of the fastener 404. The sealing ring 402 is sleeved on the outer side of the piston rod 2, and the sealing ring 402 is placed in the fixed groove 401, and then the fastener 404 is sleeved on the outer side of the piston rod 2, and then the first thread groove 403 is threadedly connected, and the fastener 404 is screwed in, so that the sealing ring 402 can be squeezed, so that the sealing ring 402 is deformed, so that the sealing ring 402 is more tightly connected to the fixed groove 401 and the outer side of the piston rod 2, which can ensure a better sealing effect.

[0024] For better sealing, the outer side of the sealing ring 402 is tightly fitted with the fixing groove 401 , and the inner side of the sealing ring 402 is tightly fitted with the piston rod 2 .

[0025] For better sealing, four sealing rings 402 are provided, and the fastener 404 is threadedly connected to the first thread groove 403 through the second thread groove 405 .

[0026] In order to facilitate the locking of the fastener 404, the locking mechanism 5 includes a first tooth groove 501, a collar 502, a second tooth groove 503, a fixing plate 504, a through groove 505, a limiting groove 506, a through hole 507 and an open latch 508. The outer side of the fastener 404 is provided with a first tooth groove 501, the outer side of the first tooth groove 501 is sleeved with a collar 502, the inner side of the collar 502 is provided with a second tooth groove 503, the outer side of the collar 502 is fixedly connected with a fixing plate 504, the outer side of the fixing plate 504 is provided with a through groove 505, and a limiting groove 506 is provided on the top of the end cover 3. Slot 506, a through hole 507 is provided on the outer side of the limiting groove 506, and an open pin 508 is inserted on the inner side of the through hole 507. The ring 502 is put on the outer side of the fastener 404, so that the second tooth groove 503 is engaged with the first tooth groove 501, so that the fixing plate 504 is in the limiting groove 506, so that the ring 502 can be limited, and then the open pin 508 is inserted into the through hole 507 and passes through the through groove 505, so as to fix the ring 502, so that the fastener 404 is engaged with the ring 502, so as to lock and fix the fastener 404.

[0027] In order to facilitate the fixing of the fastener 404 , the collar 502 is meshed and connected with the first tooth groove 501 through the second tooth groove 503 , and the fixing plate 504 is fixedly connected with the limiting groove 506 through the open latch 508 .

[0028] Working principle: Sleeve the sealing ring 402 on the outside of the piston rod 2, and place the sealing ring 402 in the fixing groove 401, then sleeve the fastener 404 on the outside of the piston rod 2, and then thread the first thread groove 403, screw in the fastener 404, and the sealing ring 402 can be squeezed to deform the sealing ring 402, so that the sealing ring 402 is more tightly connected with the fixing groove 401 and the outside of the piston rod 2, which can ensure a better sealing effect, sleeve the ring 502 on the outside of the fastener 404, so that the second tooth groove 503 is engaged with the first tooth groove 501, so that the fixing plate 504 is in the limiting groove 506, so that the ring 502 can be limited, and then the open pin 508 is inserted into the through hole 507 and passes through the through groove 505, so as to fix the ring 502, so that the fastener 404 is engaged with the ring 502, so as to lock and fix the fastener 404, thereby achieving better sealing.

[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 multiple sealing design, comprising a hydraulic cylinder body (1), a sealing mechanism (4) and a locking mechanism (5), characterized in that: The hydraulic cylinder body (1) comprises a piston rod (2) and an end cover (3); the piston rod (2) is arranged on the inner side of the hydraulic cylinder body (1); the end cover (3) is connected to the top of the hydraulic cylinder body (1) via bolts; a sealing mechanism (4) is arranged on the inner side of the end cover (3); the sealing mechanism (4) comprises a fastener (404); and a locking mechanism (5) is arranged on the outer side of the fastener (404).

2. A hydraulic cylinder with multiple seals according to claim 1, characterized in that: The sealing mechanism (4) comprises a fixing groove (401), a sealing ring (402), a first thread groove (403) and a second thread groove (405); the inner side of the end cover (3) is provided with a fixing groove (401); the inner side of the fixing groove (401) is provided with a sealing ring (402); the inner side wall of the inner cavity of the fixing groove (401) is provided with a first thread groove (403); the outer side of the first thread groove (403) is threadedly connected with a fastener (404); and the outer side of the fastener (404) is provided with a second thread groove (405).

3. A hydraulic cylinder with multiple seals according to claim 2, characterized in that: The outer side of the sealing ring (402) is tightly fitted with the fixing groove (401), and the inner side of the sealing ring (402) is tightly fitted with the piston rod (2).

4. The hydraulic cylinder with multiple seals according to claim 2, characterized in that: Four sealing rings (402) are provided, and the fastener (404) is threadedly connected to the first thread groove (403) via the second thread groove (405).

5. The hydraulic cylinder with multiple seals according to claim 1, characterized in that: The locking mechanism (5) comprises a first tooth groove (501), a collar (502), a second tooth groove (503), a fixing plate (504), a through groove (505), a limiting groove (506), a through hole (507) and an open latch (508); the first tooth groove (501) is provided on the outer side of the fastener (404); the collar (502) is sleeved on the outer side of the first tooth groove (501); the second tooth groove (503) is provided on the inner side of the collar (502); the fixing plate (504) is fixedly connected to the outer side of the collar (502); the through groove (505) is provided on the outer side of the fixing plate (504); a limiting groove (506) is provided on the upper side of the end cover (3); a through hole (507) is provided on the outer side of the limiting groove (506); and the open latch (508) is inserted into the inner side of the through hole (507).

6. The hydraulic cylinder with multiple seals according to claim 5, characterized in that: The collar (502) is meshedly connected with the first tooth groove (501) via the second tooth groove (503), and the fixing plate (504) is fixedly connected with the limiting groove (506) via the opening latch (508).

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