Long-service-life gland sealing structure suitable for hydraulic system

Abstract

The utility model discloses a long-service-life gland sealing structure suitable for a hydraulic system, and relates to the technical field of hydraulic system accessories. The device comprises a hydraulic oil pipe, a sealing groove is formed in the hydraulic oil pipe, the inner wall of the sealing groove is matched with the outer wall of a gland plate, a mounting block is welded to the outer wall of the gland plate, and the gland plate is connected with a buffer block through a micro damper; the outer wall of the buffer block is sleeved with a sealing sleeve, a noise reduction wood plate is bonded to the front side wall of the buffer block, and the front end of the buffer block is connected with a plug block through a connecting spring. The outer wall of the plug block is sleeved with a rubber sleeve, and the plug block is connected with the connecting spring through a rear plate. Triple sealing protection is provided between the gland plate and the hydraulic oil pipe through the sealing ring, the sealing gasket and the sealing sleeve, the leakproofness between the gland plate and the hydraulic oil pipe is improved, transmission of vibration can be greatly weakened through the micro damper, the noise reduction wooden plate and the connecting spring, components on the gland plate can be protected, and the noise reduction effect can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic system accessories, in particular to a long-life gland sealing structure suitable for hydraulic systems. Background Art

[0002] The hydraulic system is the most common and commonly used structure in current mechanical equipment, and is the most widely used in mechanical equipment. The connections between the various oil pipelines in the hydraulic system require extremely high airtightness to prevent the hydraulic oil inside from flowing out from the end of the oil pipeline. Therefore, a sealing gland needs to be added to the oil hole at the end of the oil pipeline to seal the oil hole through the sealing gland.

[0003] A Chinese patent application (or patent) with the announcement number CN219954217U discloses a sealing structure for a hydraulic system, which relates to the field of hydraulic system sealing technology, and includes a buffer block arranged in the hole, the buffer block is used to buffer the instantaneous pressure shock generated when the hydraulic system is working, a clamping block is arranged on the side of the buffer block close to the screw plug, a through hole is arranged on the buffer block, the clamping block is inserted into and abuts against the through hole, the through hole is connected to the hole, a fixing piece is movably connected in the hole, the fixing piece is located between the clamping block and the screw plug, the fixing piece presses the clamping block against the buffer block, the clamping block presses the buffer block against the hole, and a screw groove is arranged on the side of the clamping block away from the buffer block. When inspecting, the oil circuit is directly inspected by using the through hole on the buffer block that is connected to the hole, and the oil circuit does not need to be removed to inspect the oil circuit, thereby improving the problem that the nylon block is difficult to remove when inspecting the oil circuit, and thus facilitating the inspection of the oil circuit.

[0004] The sealing structure for the hydraulic system mentioned above has a screw plug connected to the threaded hole in the hydraulic system, and the screw plug contacts the buffer block through the clamping block, thereby achieving the goal of buffering the continuous impact force brought by the hydraulic system through the buffer block. However, although the existence of the clamping block improves the tightness of the connection between the buffer block and the screw plug, due to the direct contact between the screw plug, the clamping block and the buffer block, the instantaneous impact force generated by the hydraulic system is continuous and huge. The buffering effect brought by the buffer block can only rely on the elastic support of its own material, which will cause the problem that the buffer block is a consumable part and is easy to wear; and the continuous impact force brought by the hydraulic system is transmitted to the clamping block through the buffer block and then to the screw plug. Because the clamping block and the screw plug are both made of metal materials, when the impact force is transmitted, there will be a certain collision between the clamping block and the screw plug, thereby forming a large noise problem. To this end, we provide a long-life gland sealing structure suitable for hydraulic systems to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a long-life gland sealing structure suitable for hydraulic systems. By using a sealing ring, a sealing pad and a sealing sleeve, triple sealing protection is provided between the gland plate and the hydraulic oil pipe, and the airtightness between the gland plate and the hydraulic oil pipe is greatly improved. By using a micro damper, a noise-reducing wooden board and a connecting spring, not only the transmission of vibration can be greatly weakened to protect the components thereon, but also a noise reduction effect can be achieved, thereby solving the problems of the existing sealing structure used for the hydraulic system.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] The utility model discloses a long-life gland sealing structure suitable for a hydraulic system, comprising a hydraulic oil pipe; a sealing groove is provided inside the hydraulic oil pipe, and the inner wall of the sealing groove matches the outer wall of a gland plate, a mounting block is welded on the outer wall of the gland plate, and the mounting block matches the mounting groove on the hydraulic oil pipe, a protruding block is also installed on the side wall of the mounting block, a sealing gasket is bonded on the outer wall of the shaft end of the gland plate, and a matching ring is provided on the inner side of the sealing gasket, a micro damper is also installed inside the matching ring, and the gland plate is connected to the buffer block through the micro damper;

[0008] A sealing sleeve is sleeved on the outer wall of the buffer block, and a matching plate is provided on the rear side wall of the buffer block. A noise reduction wooden board is bonded to the front side wall of the buffer block. The front end of the buffer block is connected to the plug block through a connecting spring.

[0009] A rubber sleeve is sleeved on the outer wall of the plug block, a rear plate is welded on the rear side wall of the plug block, and the plug block is connected to the connecting spring through the rear plate.

[0010] The utility model is further configured that a mounting groove is provided on the inner wall at the end of the sealing groove, the mounting groove is provided in an "L" shape, and a lock hole is provided at the center of a horizontal section of the mounting groove.

[0011] The utility model is further configured that an adjusting groove is also opened on the side wall of the vertical end of the installation groove, an inner strip is welded on the inner side wall of the sealing groove, and a sealing ring is sleeved on the outer wall of the inner strip.

[0012] The utility model is further configured that a compression spring is bonded to an outer wall on one side of the extending block, a handrail is bonded to an outer wall on the other side of the extending block, and a screw rod is inserted into the extending block.

[0013] The utility model is further configured such that the extending block is fixedly connected to the mounting hole on the mounting block through an extrusion spring, and the outer wall of the handrail cooperates with the inner wall of the adjustment groove, and the screw rod penetrates into the extending block from the locking hole of the hydraulic oil pipe.

[0014] The utility model is further configured such that a rear groove is provided on the rear side wall of the buffer block, and a side groove is also provided on the outer side of the buffer block, the buffer block is clamped with the sealing sleeve through the side groove, the buffer block is connected to the matching plate through the rear groove, and the buffer block is connected to the micro damper through the matching plate.

[0015] The utility model is further configured that a wooden board groove is opened on the front side wall of the buffer block, and the buffer block is bonded to the noise reduction wooden board through the wooden board groove, and the buffer block is matched with the outer wall of the plug block through the noise reduction wooden board.

[0016] The utility model is further configured such that a plate groove is provided on the outer wall of the plug block, and the plug block is clamped with the rubber sleeve through the plate groove, the connecting spring on the rear side wall of the plug block is arranged in a ring array structure, and a truncated cone groove is also provided on the front end side wall of the plug block.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model provides a sealing ring, a sealing gasket and a sealing sleeve. A sealing ring is provided on the contact end of the hydraulic oil pipe and the gland plate. A sealing gasket in contact with the gland plate is also provided at the corresponding position of the gland plate. The sealing gasket and the sealing ring contact and squeeze each other. The outer part of the buffer block is sleeved with a sealing sleeve. The buffer block contacts the inner wall of the hydraulic oil pipe through the sealing sleeve, thereby improving the airtightness between the buffer block and the inner wall of the hydraulic oil pipe, and also improving the sealing effect of the gland plate at the rear side. A rubber sleeve is also sleeved on the outer wall of the plug block. The plug block contacts not only the sealing sleeve but also the inner wall of the hydraulic oil pipe through the rubber sleeve, thereby providing another layer of sealing structure for the buffer block and the gland plate. The three-layer sealing structure can better ensure the formation of a seal between the gland plate and the hydraulic oil pipe to avoid leakage of hydraulic oil.

[0019] 2. The utility model provides a pressure cover plate, a buffer block, a micro damper and a plug block. The pressure cover plate and the buffer block are connected by the micro damper, and the buffer block and the plug block are connected by a connecting spring. The connecting spring can form a certain self-adjusting buffering effect on the impact force of the hydraulic system, and then this part of the vibration is transmitted to the pressure cover plate through the micro damper. They are not in direct contact with each other, so they can provide a better buffering effect and better protection for internal components. A layer of noise-reducing wooden board is also bonded to the outer wall of the buffer block. That is, when the connecting spring is compressed to the maximum limit, the buffer block will contact the plug block through the noise-reducing wooden board, and then the noise-reducing wooden board, the micro damper and the connecting spring cooperate with each other to weaken the vibration transmission while also achieving a noise reduction effect.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The schematic diagram of the structure is a long-life gland seal structure suitable for hydraulic systems.

[0023] Figure 2 The schematic diagram is a half-section diagram of a long-life gland seal structure suitable for hydraulic systems.

[0024] Figure 3 This is the structural disassembly diagram of the hydraulic oil pipe.

[0025] Figure 4 A structural disassembly diagram of a long-life gland seal structure suitable for hydraulic systems Figure 1 .

[0026] Figure 5 A structural disassembly diagram of a long-life gland seal structure suitable for hydraulic systems Figure 2 .

[0027] Figure 6 It is a schematic diagram of the structure of the protruding block.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1-hydraulic oil pipe, 101-sealing groove, 102-mounting groove, 103-adjusting groove, 104-locking hole, 105-built-in strip, 105a-sealing ring, 2-pressure cover plate, 201-mounting block, 202-mounting hole, 203-extending block, 203a-screw, 203b-extrusion spring, 203c-handrail, 204-sealing pad, 205-matching ring, 206-micro damper, 3-buffer block, 301-rear groove, 302-side groove, 303-sealing sleeve, 304-matching plate, 305-noise reduction wooden board, 305a-wooden board groove, 4-plug block, 401-board groove, 402-rubber sleeve, 403-rear plate, 404-connecting spring, 405-cone groove. DETAILED DESCRIPTION

[0030] 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 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. Specific embodiment 1

[0032] See also Figure 1-3 and Figure 6 The utility model is a long-life gland sealing structure suitable for a hydraulic system, comprising a hydraulic oil pipe 1 and a gland plate 2 installed on the shaft end thereof. The gland plate 2 is installed on the hydraulic oil pipe 1 through a protruding block 203, thereby facilitating the disassembly and assembly of the gland plate 2.

[0033] Specifically, a mounting block 201 is welded on the outer wall of the pressure cover plate 2, and a mounting hole 202 for installing the protruding block 203 is opened on the mounting block 201, and a sealing gasket 204 is also bonded on the front side wall of the pressure cover plate 2, and a matching ring 205 is also welded on the inner side of the sealing gasket 204, and the inner wall of the matching ring 205 matches with the outer wall of the matching plate 304, wherein an extrusion spring 203b connected to the protruding block 203 is welded on the outer wall of the side facing the mounting hole 202, and a screw 203a is inserted at the center of the side wall of the protruding block 203, and a handrail 203c is welded on the outer wall of the protruding block 203 facing the adjusting groove 103, and the handrail 203c passes through the adjusting groove 103 and extends to the outside thereof.

[0034] Furthermore, a sealing groove 101 is provided inside the hydraulic oil pipe 1, and a mounting groove 102 is provided at the end of the sealing groove 101, and an adjustment groove 103 for accommodating a handrail 203c is provided on the side of the mounting groove 102, and a locking hole 104 for connecting a screw rod 203a is provided at the center of the end of the mounting groove 102. At the same time, an internal strip 105 is welded on the inner wall of the hydraulic oil pipe 1, and a sealing ring 105a that abuts against the sealing gasket 204 is sleeved on the outer wall of the internal strip 105.

[0035] The operation process of this embodiment is as follows: align the protruding block 203 with the mounting groove 102 and squeeze the cover plate 2 to press the protruding block 203 into the mounting groove 102. When the protruding block 203 slides into the end of the mounting groove 102, the squeezing spring 203b loses its restraining force and extends the protruding block 203 on its axial end out of the mounting groove 102, that is, the protruding block 203 is stuck therein, and then the screw rod 203a is inserted from the outside of the hydraulic oil pipe 1 to complete the locking installation work. When disassembly is required, by holding the hand-held rod 203c and pushing it outward, the protruding block 203 can be slid on the horizontal section of the mounting groove 102 and the squeezing spring 203b can be compressed. Even if the protruding block 203 is compressed into the mounting groove 102, the cover plate 2 can be pulled out. Specific embodiment 2

[0037] See also Figure 4 On the basis of the specific embodiment 1, a buffer block 3 is further provided, and a sealing sleeve 303 in contact with the inner wall of the hydraulic oil pipe 1 is provided on the outer wall of the buffer block 3. The sealing sleeve 303 improves the airtightness between the buffer block 3 and the inner wall of the hydraulic oil pipe 1, and a noise reduction wooden board 305 is also bonded to the contact end of the buffer block 3 with the plug block 4, and the noise reduction wooden board 305 can reduce noise.

[0038] Specifically, a side groove 302 for clamping the sealing sleeve 303 is opened on the outer wall of the buffer block 3, and a rear groove 301 for installing the matching plate 304 is also opened on the rear side wall of the buffer block 3, and a micro damper 206 is also installed on the rear side wall of the matching plate 304, and the matching plate 304 is connected to the pressure cover plate 2 through the micro damper 206.

[0039] Furthermore, a wooden board groove 305 a for bonding the noise reduction wooden board 305 is formed at the front end of the buffer block 3 , and the inner side wall of the noise reduction wooden board 305 cooperates with the outer side wall of the plug block 4 .

[0040] The operation process of this embodiment is as follows: when the plug block 4 is subjected to impact force and is transmitted to the buffer block 3 through the connecting spring 404, the connecting spring 404 weakens this part of the impact force, and the weakened impact force will directly act on the buffer block 3, and then the buffer block 3 will weaken this part of the impact force again through the micro damper 206 on its rear side. During this process, when the connecting spring 404 is compressed to the maximum limit, the plug block 4 will contact the outer wall of the noise reduction wooden board 305, thereby avoiding the generation of large metal parts impact sound. Specific embodiment three

[0042] See also Figure 5On the basis of specific embodiment 1 and specific embodiment 2, a plug block 4 is further provided. The plug block 4 contacts the inner wall of the hydraulic oil pipe 1 through a rubber sleeve 402 sleeved on its outer wall, and also contacts the sealing sleeve on the outer wall of the buffer block 3, thereby achieving a sealing effect. The rear side wall of the plug block 4 is also connected to the buffer block 3 through a connecting spring 404. When the plug block 4 is first subjected to impact force, the connecting spring 404 can buffer this part of the impact force.

[0043] Specifically, a plate groove 401 for clamping the rubber sleeve 402 is opened on the outer wall of the plug block 4, and a rear plate 403 is welded on the rear side wall of the plug block 4, and the rear plate 403 is connected to the buffer block 3 through a connecting spring 404.

[0044] Furthermore, there are five connecting springs 404, one of which is arranged at the center of the rear plate 403, and the other four are arranged in a ring-shaped array on the outside of the connecting spring 404 at the center, and a truncated cone groove 405 is also provided at the end of the plug block 4. When the impact force impacts the plug block 4, the truncated cone groove 405 can gather this part of the positive relative impact force and make it toward the center of the plug block 4, thereby avoiding excessive impact on the position of the rubber sleeve 402.

[0045] The operation process of this embodiment is as follows: when the impact force of the hydraulic system impacts the plug block 4, the truncated cone groove 405 can gather this part of the positive relative impact force and make it toward the connecting spring 404 at the center, and the five connecting springs 404 then buffer this part of the impact force, and then transmit it to the buffer block 3 after buffering.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A long-life gland sealing structure suitable for a hydraulic system, comprising a hydraulic oil pipe (1); characterized in that: The hydraulic oil pipe (1) is provided with a sealing groove (101) inside, and the inner wall of the sealing groove (101) matches with the outer wall of the gland plate (2); a mounting block (201) is welded on the outer wall of the gland plate (2), and the mounting block (201) matches with the mounting groove (102) on the hydraulic oil pipe (1); a protruding block (203) is also installed on the side wall of the mounting block (201); a sealing gasket (204) is bonded to the outer wall of the axial end of the gland plate (2), and a matching ring (205) is provided on the inner side of the sealing gasket (204); a micro damper (206) is also installed inside the matching ring (205), and the gland plate (2) is connected to the buffer block (3) via the micro damper (206); A sealing sleeve (303) is sleeved on the outer wall of the buffer block (3), a matching plate (304) is provided on the rear side wall of the buffer block (3), a noise reduction wooden board (305) is bonded to the front side wall of the buffer block (3), and the front end of the buffer block (3) is connected to the plug block (4) via a connecting spring (404); A rubber sleeve (402) is sleeved on the outer wall of the plug block (4), a rear plate (403) is welded on the rear side wall of the plug block (4), and the plug block (4) is connected to the connecting spring (404) via the rear plate (403).

2. A long-life gland sealing structure suitable for a hydraulic system according to claim 1, characterized in that: An installation groove (102) is provided on the inner wall at the end of the sealing groove (101), the installation groove (102) is arranged in an "L" shape, and a lock hole (104) is also provided at the center of the horizontal section of the installation groove (102).

3. A long-life gland sealing structure suitable for a hydraulic system according to claim 2, characterized in that: An adjustment groove (103) is also provided on the side wall of the vertical end of the installation groove (102), an inner strip (105) is welded on the inner wall of the sealing groove (101), and a sealing ring (105a) is sleeved on the outer wall of the inner strip (105).

4. The long-life gland sealing structure applicable to a hydraulic system according to claim 1, characterized in that: A compression spring (203b) is bonded to an outer wall on one side of the extending block (203), a handrail (203c) is bonded to an outer wall on the other side of the extending block (203), and a screw rod (203a) is also inserted into the extending block (203).

5. A long-life gland sealing structure suitable for a hydraulic system according to claim 4, characterized in that: The extending block (203) is fixedly connected to the mounting hole (202) on the mounting block (201) via a compression spring (203b), and the outer wall of the handrail (203c) cooperates with the inner wall of the adjustment groove (103), and the screw rod (203a) penetrates into the extending block (203) from the locking hole (104) of the hydraulic oil pipe (1).

6. The long-life gland sealing structure applicable to a hydraulic system according to claim 1, characterized in that: A rear groove (301) is provided on the rear side wall of the buffer block (3), and a side groove (302) is also provided on the outer side of the buffer block (3); the buffer block (3) is clamped with the sealing sleeve (303) via the side groove (302); the buffer block (3) is connected to the matching plate (304) via the rear groove (301), and the buffer block (3) is connected to the micro damper (206) via the matching plate (304).

7. The long-life gland sealing structure applicable to a hydraulic system according to claim 1, characterized in that: A wooden board groove (305a) is provided on the front side wall of the buffer block (3), and the buffer block (3) is bonded to the noise reduction wooden board (305) through the wooden board groove (305a), and the buffer block (3) is matched with the outer wall of the plug block (4) through the noise reduction wooden board (305).

8. The long-life gland sealing structure applicable to a hydraulic system according to claim 1, characterized in that: A plate groove (401) is provided on the outer wall of the plug block (4), and the plug block (4) is clamped with the rubber sleeve (402) through the plate groove (401). The connecting springs (404) on the rear side wall of the plug block (4) are arranged in a ring array structure, and a truncated cone groove (405) is also provided on the front end side wall of the plug block (4).

Images