Sealing element structure for T-shaped hydraulic breaking hammer

Abstract

The utility model discloses a sealing element structure for a T-shaped hydraulic breaking hammer, and particularly relates to a sealing element which comprises a sealing ring body and contact parts symmetrically arranged on the inner side of the sealing ring body, the two contact parts incline towards the outer walls of the two opposite sides of the sealing ring body respectively, and curved surface parts are arranged on the contact parts. And the sealing ring body is provided with an air bag part which is extruded to deform so as to push the contact part. According to the sealing element structure provided by the utility model, the contact parts are symmetrically arranged on the inner side of the sealing ring body, so that the two contact parts are respectively contacted with the piston rod, and the other contact part is continuously contacted with the outer wall of the piston rod when a single contact part is seriously deformed, so that the sealing effect of the piston rod is ensured; the air bag part on one side of the contact part is extruded to push the contact part, so that when the contact part is abraded to a certain extent, the contact part can be attached to the piston rod for a longer time through pushing of the air bag part, and the service life of the sealing ring body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of seals, and particularly relates to a seal structure for a T-shaped hydraulic breaker. Background Art

[0002] A hydraulic breaker is a heavy mechanical equipment widely used in the construction and mining fields, mainly used for crushing concrete, rocks and other hard materials. It generates a powerful impact force through a hydraulic system and can efficiently complete the crushing operation.

[0003] According to the patent publication number CN112983927A, the application publication date is June 18, 2021, which discloses a middle cylinder component of a hydraulic breaker. The middle cylinder component includes: a piston, a middle cylinder body, piston rings, seals and a reversing valve; the inner hole structure of the middle cylinder body successively includes from left to right in the direction of piston head fitting: the first piston rod seal groove, the second piston rod seal groove, the third buffer ring groove, and the first oil return groove; the inner hole structure of the piston ring successively includes from right to left: the first air seal groove, the second oil seal groove, the third oil return groove, the fourth piston ring seal groove, and the fifth piston ring seal groove.

[0004] In the prior art including the above patent, at present, in order to ensure the sealing performance of the piston rod body in the middle cylinder component of the hydraulic breaker, corresponding seals are arranged in the middle cylinder component to ensure the sealing effect during piston operation. Currently, common seals are mostly Figure 3 As shown, the inner side of the arranged ring body a has an integral arc surface b. Such seals have characteristics such as simple structure and easy production. When the piston rod in the middle cylinder component of the hydraulic breaker reciprocates up and down and generates impact energy, the integral curved surface structure of the arc surface b on the common seal will rub against the piston rod for a long time. When contacting the piston rod, the seal will be squeezed and pulled to generate deformation. When the seal is used for a long time, the arc surface b on it will have a certain deformation. And because the seal has only one contact surface with the piston rod, when the deformation of one contact surface of the seal is relatively serious, the sealing effect will deteriorate. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a seal structure for a T-shaped hydraulic breaker to solve the above technical problems.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A seal structure for a T-shaped hydraulic breaker includes a seal ring body and contact parts symmetrically arranged on its inner side. The two contact parts are respectively inclined towards the outer walls on the opposite sides of the seal ring body. A curved surface part is arranged on the contact part, and an airbag part that is deformed by extrusion to push the contact part is arranged on the seal ring body.

[0007] Preferably, thin wall portions adjacent to the airbag portions are provided on the outer walls of opposite sides of the sealing ring body.

[0008] Preferably, a plurality of corrugated protrusions are provided inside the sealing ring body between two contact portions.

[0009] Preferably, a cavity portion is provided inside the sealing ring body.

[0010] Preferably, the sealing ring body is a polyurethane ring.

[0011] Preferably, the number of the corrugated protrusions is specifically three.

[0012] In the above technical solution, a sealing member structure for a T-shaped hydraulic breaker provided by the present utility model has the following beneficial effects: through the contact portions symmetrically arranged inside the sealing ring body, the two contact portions are respectively used to contact the piston rod, and then when one of the contact portions is severely deformed, the other contact portion is used to continue contacting the outer wall of the piston rod, thereby ensuring the sealing effect of the piston rod. When the contact portion is worn to a certain extent, the airbag portion on one side of the contact portion presses against and pushes the contact portion, so that the contact portion can be attached to the piston rod for a longer time, thereby improving the service life of the sealing ring body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0014] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the sealing ring body provided by the embodiment of the present utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the sealing ring body during use provided by the embodiment of the present utility model;

[0016] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the sealing ring in the prior art.

[0017] Description of the reference numerals in the drawings of the present application:

[0018] 1. Sealing ring body; 11. Airbag portion; 12. Thin wall portion; 13. Curved surface portion; 14. Corrugated protrusion; 15. Cavity portion; 16. Contact portion.

[0019] Description of the reference numerals in the drawings of the prior art:

[0020] a. Ring body; b. Arc surface. Detailed implementation mode

[0021] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings.

[0022] As Figures 1-2 shown, a seal structure for a T-shaped hydraulic breaker includes a sealing ring body 1 and contact portions 16 symmetrically arranged on the inner side thereof. The two contact portions 16 are respectively inclined towards the outer walls on opposite sides of the sealing ring body 1. A curved surface portion 13 is provided on the contact portion 16, and an airbag portion 11 that is deformed by extrusion to push the contact portion 16 is provided on the sealing ring body 1. Through the contact portions 16 symmetrically arranged on the inner side of the sealing ring body 1, the two contact portions 16 are respectively used to contact the piston rod. Furthermore, when a single contact portion 16 is severely deformed, the other contact portion 16 is used to continue contacting the outer wall of the piston rod, thereby ensuring the sealing effect of the piston rod. When the airbag portion 11 on one side of the contact portion 16 is extruded to push the contact portion 16, when the contact portion 16 is worn to a certain extent, the pushing of the airbag portion 11 can make the contact portion 16 fit on the piston rod for a longer time, thereby improving the service life of the sealing ring body 1.

[0023] As a further technical solution provided by the present utility model, thin wall portions 12 adjacent to the airbag portion 11 are provided on the outer walls on opposite sides of the sealing ring body 1.

[0024] Specifically, as Figure 1 shown, through the thin wall portions 12 adjacent to the airbag portion 11 inside the sealing ring body 1, when the sealing ring body 1 is assembled in the T-shaped hydraulic breaker, the two thin wall portions 12 are squeezed by the wall of its installation groove. Furthermore, the thin wall portions 12 are squeezed and contracted towards the sealing ring body 1. At this time, because the airbag portion 11 is adjacent to the thin wall portion 12, the squeezing force received by the thin wall portion 12 acts on the airbag portion 11, so that the airbag portion 11 is deformed by extrusion and pushes the contact portion 16. At the same time, by using the squeezing force generated during the installation of the two airbag portions 11 and the thin wall portions 12, the sealing ring body 1 can be more stably installed in the T-shaped hydraulic breaker.

[0025] Furthermore, a plurality of corrugated protrusions 14 are provided between the two contact portions 16 on the inner side of the sealing ring body 1.

[0026] Specifically, the area of the sealing ring body 1 between the two contact parts 16 is a recessed part, and a plurality of corrugated protrusions 14 are arranged in the recessed part. When the contact part 16 is pulled and deformed through the recessed part, the contact part 16 can move closer to the recessed part, so that when the contact part 16 is subjected to extrusion pressure, the contact part 16 deforms to reduce the damage caused by strong extrusion to the sealing ring body 1 and the contact part 16, thereby prolonging the service life of the sealing ring body 1. Secondly, when the contact part 16 is extruded, the plurality of corrugated protrusions 14 support the recessed part and the contact part 16, avoiding the problem of poor sealing caused by excessive deformation of the contact part 16.

[0027] Furthermore, a cavity part 15 is arranged in the sealing ring body 1.

[0028] Specifically, the cavity part 15 can reduce the volume occupied by the sealing ring body 1. Secondly, when the sealing ring body 1 deforms, the cavity part 15 can deform to enhance the elasticity and deformability of the sealing ring body 1, so as to better cope with the extrusion pressure received by the sealing ring body 1.

[0029] Moreover, the sealing ring body 1 is a polyurethane ring.

[0030] Specifically, the polyurethane ring has good mechanical properties, wear resistance and heat resistance, and is suitable for working environments with high speed, high temperature and high pressure. For the reciprocating piston rod, the polyurethane ring can be better adapted.

[0031] Further, the number of the corrugated protrusions 14 is specifically three.

[0032] Specifically, there are three corrugated protrusions 14, which are located in the recessed part between the two contact parts 16. At the same time, the three corrugated protrusions 14 are symmetrically arranged with the middle corrugated protrusion 14 as the axis of symmetry. The corrugated protrusions 14, the contact part 16 and the airbag part 11 are symmetrically arranged on the sealing ring body 1. Therefore, when the piston rod reciprocates, the deformation and force of the sealing ring body 1 are more stable.

[0033] Working principle: Through the contact parts 16 symmetrically arranged on the inner side of the sealing ring body 1, the two contact parts 16 are respectively used to contact the piston rod. Furthermore, when one of the contact parts 16 is severely deformed, the other contact part 16 is used to continue contacting the outer wall of the piston rod, thereby ensuring the sealing effect of the piston rod. When the airbag part 11 on one side of the contact part 16 is squeezed to push the contact part 16, when the contact part 16 is subject to a certain amount of wear, the pushing of the airbag part 11 can make the contact part 16 fit on the piston rod for a longer time, thereby improving the service life of the sealing ring body 1. At the same time, when the contact part 16 is pulled and deformed, the contact part 16 can move closer to the concave part, so that the contact part 16 deforms under the extrusion force to reduce the damage caused by strong extrusion to the sealing ring body 1 and the contact part 16, thereby extending the service life of the sealing ring body 1. Secondly, when the contact part 16 is squeezed, multiple corrugated protrusions 14 are used to support the concave part and the contact part 16, avoiding the problem of poor sealing caused by excessive deformation of the contact part 16.

[0034] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sealing structure for a T-shaped hydraulic breaker, characterized in that, It includes a sealing ring body (1) and contact parts (16) symmetrically arranged on its inner side. The two contact parts (16) are inclined towards the outer walls on the opposite sides of the sealing ring body (1) respectively. A curved surface part (13) is arranged on the contact part (16), and an airbag part (11) which is extruded and deformed to push the contact part (16) is arranged on the sealing ring body (1).

2. The sealing structure for a T-shaped hydraulic breaker according to claim 1, wherein, Thin wall parts (12) adjacent to the airbag part (11) are arranged on the outer walls on the opposite sides of the sealing ring body (1).

3. A seal structure for a T-shaped hydraulic breaker according to claim 1, characterized in that, A plurality of corrugated protrusions (14) are arranged between the two contact parts (16) on the inner side of the sealing ring body (1).

4. A sealing member structure for a T-shaped hydraulic breaker according to claim 1, characterized in that, A cavity part (15) is arranged inside the sealing ring body (1).

5. The sealing structure for a T-shaped hydraulic breaker according to claim 1, characterized in that, The sealing ring body (1) is a polyurethane ring.

6. The sealing member structure for a T-shaped hydraulic breaker according to claim 3, characterized in that, Specifically, there are three corrugated protrusions (14).

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