Leakage-proof structure for hydraulic oil cylinder

Abstract

The utility model discloses a leakproof structure for a hydraulic oil cylinder, which relates to the technical field of leakproof of hydraulic oil cylinders and comprises a rotating block, an oil cylinder body is arranged below the rotating block, a fixing plate is fixedly arranged at the upper end of the oil cylinder body, a threaded groove is arranged on the fixing plate, the rotating block is in threaded connection with the threaded groove, and a piston rod is movably arranged in the oil cylinder body. A mounting assembly is arranged above the oil cylinder body and comprises a sealing ring, a plurality of adjusting blocks and a fixing groove. The rotating block is rotated, the rotating block moves downwards along the threaded groove and drives the fixing groove to move downwards, the fixing groove extrudes the adjusting blocks, and the fixing groove is small in top and large in bottom, so that the adjusting blocks slowly move towards the piston rod and drive the sealing ring to be attached to the piston rod until the sealing standard is met. The sealing ring can be rapidly installed through the device, the sealing performance of the movable position of the piston rod can be guaranteed, and the device meets the requirement of industrial production.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydraulic cylinder leak protection, especially relates to a leak protection structure for hydraulic cylinder. BACKGROUND

[0002] The hydraulic cylinder is a kind of hydraulic equipment that converts hydraulic energy into mechanical energy, and is widely used in various situations requiring fine adjustment or heavy pushing, such as heavy machinery manufacturing, engineering construction, automotive industry and medical equipment fields.The existing hydraulic cylinder is usually equipped with a leak protection structure to increase its service life.

[0003] In the prior art, the inner diameter of the sealing ring in the leak protection structure is equal to or slightly smaller than the outer diameter of the hydraulic cylinder piston rod;when the inner diameter of the sealing ring is equal to the outer diameter of the hydraulic cylinder piston rod, the sealing effect of the sealing ring is not good, and when the inner diameter of the sealing ring is slightly smaller than the outer diameter of the hydraulic cylinder piston rod, the sealing ring is difficult to install, which reduces the production efficiency of the device, therefore, the leak protection structure for hydraulic cylinder is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the defects of poor sealing effect of the sealing ring or difficult installation of the sealing ring in the prior art, and provides a leak protection structure for hydraulic cylinder.

[0005] In order to solve the problems in the prior art, the utility model adopts the following technical scheme:

[0006] A leak protection structure for hydraulic cylinder, comprising a rotating block, an oil cylinder body is arranged below the rotating block, a fixed plate is fixedly arranged on the upper end of the oil cylinder body, a threaded groove is formed in the fixed plate, the rotating block is threadedly connected with the threaded groove, a piston rod is movably arranged in the oil cylinder body, an installation assembly is arranged above the oil cylinder body, and the installation assembly comprises a sealing ring, a plurality of adjusting blocks and a fixed groove.

[0007] Preferably, the piston rod penetrates through the fixed plate, the rotating block and the sealing ring, and the inner diameter of the sealing ring is slightly larger than the outer diameter of the piston rod.

[0008] Preferably, the sealing ring is located in the threaded groove, the plurality of adjusting blocks are fixedly arranged outside the sealing ring, and the fixed groove is formed in the middle of the rotating block.

[0009] Preferably, the fixed groove is small at the top and large at the bottom.

[0010] Preferably, three metal wires are fixedly arranged in the sealing ring.

[0011] Preferably, a pair of rubber rings are fixedly arranged on the rotating block, a pair of annular grooves are formed in the fixed plate, and the pair of rubber rings are respectively clamped with the pair of annular grooves.

[0012] Preferably, a pair of circular holes are arranged on the rotating block, bolts are arranged in the circular holes, and a pair of mounting grooves are arranged on the fixing plate, and the bolts are threadedly connected with the mounting grooves.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. In the utility model, the rotating block is rotated, the rotating block moves downward along the threaded groove, the rotating block drives the fixed groove to move downward, the fixed groove extrudes the plurality of adjusting blocks, the fixed groove is large at the top and small at the bottom, the adjusting blocks slowly move towards the piston rod, the adjusting blocks drive the sealing ring to adhere to the piston rod, until the sealing standard is reached, the device can quickly install the sealing ring, and the sealing performance of the piston rod moving part is ensured, and the device meets the needs of industrial production.

[0015] 2. In the utility model, the metal wire improves the overall rigidity of the sealing ring, prevents the aging of the sealing ring from being aggravated due to excessive deformation in the use process, and greatly improves the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the utility model, constitute a part of the present application, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0017] Figure 1 It is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a fixed plate and rotating block connection relationship schematic diagram of the utility model;

[0019] Figure 3 It is a rotating block cross-sectional structural schematic diagram of the utility model;

[0020] Figure 4 It is a sealing ring and adjusting block position relationship schematic diagram of the utility model;

[0021] Figure 5 It is a sealing ring cross-sectional structural schematic diagram of the utility model.

[0022] In the drawing, the serial number: 1, oil cylinder body; 11, piston rod; 12, fixed plate; 13, threaded groove; 14, rotating block; 2, sealing ring; 21, adjusting block; 22, fixed groove; 3, metal wire; 4, rubber ring; 41, annular groove; 5, circular hole; 51, bolt; 52, mounting groove. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense, for example, "connected" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Embodiment: The embodiment provides a kind of anti-leakage structure for hydraulic oil cylinder, referring to Figures 1-5 Specifically, it includes rotating block 14, rotating block 14 is provided with oil cylinder body 1 below, oil cylinder body 1 upper end is fixedly provided with fixed plate 12, threaded groove 13 is formed in fixed plate 12, rotating block 14 is threadedly connected with threaded groove 13, piston rod 11 is movably arranged in oil cylinder body 1, installation assembly is arranged above oil cylinder body 1, and the installation assembly includes one sealing ring 2, a plurality of adjusting blocks 21 and one fixed groove 22, piston rod 11 penetrates fixed plate 12, rotating block 14 and sealing ring 2, the inner diameter of sealing ring 2 is slightly larger than the outer diameter of piston rod 11, sealing ring 2 is located in threaded groove 13, a plurality of adjusting blocks 21 are fixedly arranged on the outer side of sealing ring 2, and fixed groove 22 is formed in the middle of rotating block 14, and fixed groove 22 is small at the top and large at the bottom;

[0026] Rotating rotating block 14, rotating block 14 moves downward along threaded groove 13, rotating block 14 drives fixed groove 22 to move downward, fixed groove 22 extrudes a plurality of adjusting blocks 21, fixed groove 22 is small at the top and large at the bottom, so that adjusting block 21 slowly moves towards piston rod 11, adjusting block 21 drives sealing ring 2 to adhere to piston rod 11, until the sealing standard is reached, so that the device can quickly install sealing ring 2, and the sealing property of the movable part of piston rod 11 can be ensured, and the device meets the needs of industrial production;

[0027] Three metal wires 3 are fixedly arranged in sealing ring 2;

[0028] Metal wire 3 improves the overall rigidity of sealing ring 2, prevents aging caused by excessive deformation of sealing ring 2 during use, and greatly improves the service life of the device;

[0029] A pair of rubber rings 4 are fixed on the rotating block 14, and a pair of annular grooves 41 are formed on the fixed plate 12, and the pair of rubber rings 4 are respectively clamped in the pair of annular grooves 41;

[0030] After the sealing ring 2 is installed, the rubber ring 4 is clamped in the annular groove 41, the possibility of leakage at the connection is reduced, and the air tightness is further improved.

[0031] A pair of circular holes 5 are formed on the rotating block 14, and a bolt 51 is inserted in each circular hole 5, a pair of mounting grooves 52 are formed on the fixed plate 12, and the pair of bolts 51 are respectively screwed into the pair of mounting grooves 52.

[0032] The bolt 51 is screwed into the mounting groove 52 through the circular hole 5, the rotating block 14 is limited, the rotating block 14 is prevented from loosening during work, and the air tightness of the device is ensured.

[0033] Specifically, the working principle and operation method of the utility model are as follows:

[0034] The rotating block 14 is rotated, the rotating block 14 moves downwards along the threaded groove 13, the rotating block 14 drives the fixed groove 22 to move downwards, the fixed groove 22 extrudes the plurality of adjusting blocks 21, the fixed groove 22 is larger at the bottom, the adjusting block 21 slowly moves towards the piston rod 11, the adjusting block 21 drives the sealing ring 2 to adhere to the piston rod 11, until the sealing standard is reached, the device can quickly install the sealing ring 2, and the sealing property of the piston rod 11 is ensured, and the device meets the needs of industrial production.

[0035] The wire 3 improves the overall rigidity of the sealing ring 2, prevents the sealing ring 2 from being excessively deformed during use, and greatly improves the service life of the device, after the sealing ring 2 is installed, the rubber ring 4 is clamped in the annular groove 41, the possibility of leakage at the connection is reduced, and the air tightness is further improved.

[0036] The bolt 51 is screwed into the mounting groove 52 through the circular hole 5, the rotating block 14 is limited, the rotating block 14 is prevented from loosening during work, and the air tightness of the device is ensured.

[0037] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model can make equivalent replacement or change, and all should be covered in the protection scope of the utility model.

Claims

1. A leakage-proof structure for a hydraulic cylinder, comprising a rotating block (14), characterized in that: The rotating block (14) is provided below with an oil cylinder body (1), the upper end of the oil cylinder body (1) is fixedly provided with a fixed plate (12), the fixed plate (12) is provided with a threaded groove (13), the rotating block (14) is in threaded connection with the threaded groove (13), the oil cylinder body (1) is movably provided with a piston rod (11), and the oil cylinder body (1) is provided above with a mounting assembly, the mounting assembly comprises a sealing ring (2), a plurality of adjusting blocks (21) and a fixed groove (22).

2. The anti-leakage structure for a hydraulic cylinder according to claim 1, characterized in that: The piston rod (11) penetrates the fixed plate (12), the rotating block (14) and the sealing ring (2), and the inner diameter of the sealing ring (2) is slightly larger than the outer diameter of the piston rod (11).

3. The anti-leakage structure for a hydraulic cylinder according to claim 1, characterized in that: The sealing ring (2) is located in the threaded groove (13), a plurality of the adjusting blocks (21) are fixedly arranged outside the sealing ring (2), and the fixed groove (22) is arranged in the middle of the rotating block (14).

4. The anti-leakage structure for a hydraulic cylinder according to claim 1, characterized in that: The fixed groove (22) is small at the top and large at the bottom.

5. The anti-leak structure for a hydraulic cylinder according to claim 1, characterized in that: Three metal wires (3) are fixedly arranged in the sealing ring (2).

6. The anti-leak structure for a hydraulic cylinder according to claim 1, characterized in that: A pair of rubber rings (4) are fixedly arranged on the rotating block (14), a pair of annular grooves (41) are arranged on the fixed plate (12), and the pair of rubber rings (4) are respectively clamped in the pair of annular grooves (41).

7. The anti-leakage structure for a hydraulic cylinder according to claim 1, characterized in that: A pair of round holes (5) are arranged on the rotating block (14), bolts (51) are arranged in the round holes (5), a pair of mounting grooves (52) are arranged on the fixed plate (12), and the pair of bolts (51) are respectively in threaded connection with the pair of mounting grooves (52).

Images