阅读说明：本技术 一种防止摩擦碰撞的纯水介质液压支架活塞主密封结构 (Main sealing structure of pure water medium hydraulic support piston for preventing friction collision ) 是由 王雪平 于 2020-12-08 设计创作，主要内容包括：本发明公开了一种防止摩擦碰撞的纯水介质液压支架活塞主密封结构,包括密封件,所述密封件顶部的外侧设有高强度塑料挡圈,所述密封件内部的顶部设有橡胶弹性体,所述橡胶弹性体的顶部设有高硬度自润滑聚氨酯密封环,所述高强度塑料挡圈的内侧套设有转盘,所述高硬度自润滑聚氨酯密封环外侧设有套筒,且套筒与高强度塑料挡圈相互贴合,所述套筒外侧的顶部设有五组铰接轴；本发明装置利用高硬度自润滑聚氨酯密封环的安装配合,使液压支架在纯水介质中产生的摩擦和阻力得到减小,并提高密封件的抗挤出性能,同时在橡胶弹性体的弹性缓冲下,进一步提高装置的缓冲性,减小部件所受到的伤害,增加密封件的使用寿命。(The invention discloses a main sealing structure of a pure water medium hydraulic support piston for preventing friction collision, which comprises a sealing element, wherein a high-strength plastic check ring is arranged on the outer side of the top of the sealing element, a rubber elastic body is arranged on the top inside the sealing element, a high-hardness self-lubricating polyurethane sealing ring is arranged on the top of the rubber elastic body, a turntable is sleeved on the inner side of the high-strength plastic check ring, a sleeve is arranged on the outer side of the high-hardness self-lubricating polyurethane sealing ring, the sleeve and the high-strength plastic check ring are mutually attached, and five groups of hinged shafts are arranged on the top of; the device provided by the invention utilizes the installation and matching of the high-hardness self-lubricating polyurethane sealing ring, so that the friction and resistance of the hydraulic support in a pure water medium are reduced, the extrusion resistance of the sealing element is improved, and meanwhile, under the elastic buffer of the rubber elastomer, the buffer property of the device is further improved, the damage to the components is reduced, and the service life of the sealing element is prolonged.)

1. The utility model provides a prevent friction collision's pure water medium hydraulic support piston main seal structure, includes sealing member (1), its characterized in that: the outer side of the top of the sealing element (1) is provided with a high-strength plastic check ring (3), the top of the inner part of the sealing element (1) is provided with a rubber elastic body (2), the top of the rubber elastic body (2) is provided with a high-hardness self-lubricating polyurethane sealing ring (7), the inner side of the high-strength plastic check ring (3) is sleeved with a turntable (10), the outer side of the high-hardness self-lubricating polyurethane sealing ring (7) is provided with a sleeve (6), the sleeve (6) and the high-strength plastic check ring (3) are mutually attached, the top of the outer side of the sleeve (6) is provided with five groups of articulated shafts (12), the inner sides of the five groups of articulated shafts (12) are articulated with guide plates (13) which are mutually matched with the articulated shafts, the inner side of the turntable (10) is respectively provided with five groups of articulated seats (4) and slots (11), the outer side of the five, the top of sealing member (1) is equipped with closing plate (9), the bottom of closing plate (9) is equipped with five groups and the plug-in block (5) of slot (11) mutual block adaptation, the inside intermediate position department of closing plate (9) is equipped with preformed hole (14).

2. The main sealing structure of the piston of the pure water medium hydraulic support for preventing friction collision according to claim 1, is characterized in that: the inside four corners department of closing plate (9) is equipped with the mounting hole, and the inboard cover of mounting hole is equipped with the sealing plug of mutually supporting with high strength plastics retaining ring (3).

3. The main sealing structure of the piston of the pure water medium hydraulic support for preventing friction collision according to claim 1, is characterized in that: and a buffer belt is arranged on one side of the guide plates (13) close to each other.

4. The main sealing structure of the piston of the pure water medium hydraulic support for preventing friction collision according to claim 1, is characterized in that: and a sealing gasket is arranged on the inner side of the slot (11).

5. The main sealing structure of the piston of the pure water medium hydraulic support for preventing friction collision according to claim 1, is characterized in that: and a waterproof layer is arranged on the inner side of the sleeve (6).

6. The main sealing structure of the piston of the pure water medium hydraulic support for preventing friction collision according to claim 1, is characterized in that: articulated seat (4), arc articulated rod (8), articulated shaft (12) and deflector (13) are articulated linkage cooperation.

Technical Field

The invention relates to the technical field of hydraulic supports, in particular to a main sealing structure of a piston of a pure water medium hydraulic support for preventing friction collision.

Background

The hydraulic support is a structure used for controlling the mine pressure of a coal face, the mine pressure of the coal face acts on the hydraulic support in an external load mode, and in a mechanical system in which the hydraulic support and surrounding rock of the coal face interact, if the resultant force of all supporting pieces of the hydraulic support and the resultant force of the external load of a top plate acting on the hydraulic support are exactly the same straight line, the hydraulic support is very suitable for the surrounding rock of the coal face;

when hydraulic support met pure water medium, often promoted the sealed demand of piston drive structure to guarantee hydraulic support's normal work, however when in actual use, seal structure still met following problem, for example:

1. when the hydraulic support and the pure water medium are contacted with each other, larger friction resistance is generated, and extrusion and impact are caused on the piston sealing element, so that the normal work of the device is influenced, and the service life of the sealing element is shortened;

2. when the pure water medium collides with the piston sealing element, a strong pressure is formed, and when the pressure floats greatly, the sealing element is easy to generate position deviation, so that the original sealing performance of the device is reduced, and the use flexibility of parts is influenced;

3. when the hydraulic support works, the piston head and the cylinder do not have a good limiting and guiding function, so that the piston head easily generates friction impact on the inner wall of the cylinder, damage is generated when parts collide and collide, and the protection performance and the practicability of the device are reduced.

Disclosure of Invention

The invention aims to provide a pure water medium hydraulic support piston main sealing structure for preventing friction collision, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a main sealing structure of a piston of a pure water medium hydraulic support for preventing friction collision comprises a sealing element, wherein a high-strength plastic check ring is arranged on the outer side of the top of the sealing element, a rubber elastic body is arranged on the top of the inside of the sealing element, a high-hardness self-lubricating polyurethane sealing ring is arranged on the top of the rubber elastic body, a turntable is sleeved on the inner side of the high-strength plastic check ring, a sleeve is arranged on the outer side of the high-hardness self-lubricating polyurethane sealing ring and is mutually attached to the high-strength plastic check ring, five groups of articulated shafts are arranged on the top of the outer side of the sleeve, guide plates matched with the articulated shafts are articulated on the inner sides of the five groups of articulated shafts, five groups of articulated seats and slots are respectively arranged on the inner side of the turntable, arc-shaped articulated rods mutually articulated with the guide plates are arranged on the outer sides of the five groups, and a preformed hole is formed in the middle position inside the sealing plate.

Preferably, the four corners inside the sealing plate are provided with mounting holes, and the inner side of each mounting hole is sleeved with a sealing plug matched with the high-strength plastic retainer ring.

Preferably, one side of the guide plates, which is close to each other, is provided with a buffer belt.

Preferably, a sealing gasket is arranged on the inner side of the slot.

Preferably, a waterproof layer is arranged on the inner side of the sleeve.

Preferably, the hinge seat, the arc-shaped hinge rod, the hinge shaft and the guide plate are in hinge linkage fit.

Compared with the prior art, the invention has the beneficial effects that: the main sealing structure of the pure water medium hydraulic support piston for preventing friction collision reduces the friction resistance generated by the contact of the hydraulic support and the pure water medium through the high-hardness self-lubricating polyurethane sealing ring, increases the impact resistance of a sealing element through the attachment of a high-strength plastic retaining ring, and adjusts the gap of a guide plate by utilizing a hinged opening structure so as to achieve the purpose of limiting and guiding according to the size of the piston and prevent the piston from contacting with the inner wall of a cylinder barrel during working;

1. by utilizing the installation and matching of the high-hardness self-lubricating polyurethane sealing ring, the friction and the resistance generated by the hydraulic support in a pure water medium are reduced, the extrusion resistance of the sealing element is improved, and meanwhile, under the elastic buffer of the rubber elastomer, the buffer property of the device is further improved, the damage to the components is reduced, and the service life of the sealing element is prolonged;

2. the sealing piece can bear higher pressure by installing the attached high-strength plastic check ring above the sealing piece, and a secondary attachment protection structure is formed under the sealing clamping of the sealing plate, the inserting block and the inserting groove, so that the overall stability and the sealing property of the sealing piece are improved;

3. utilize the deflector under the hinge connection with articulated seat, sleeve, arc articulated rod and articulated shaft, can adjust according to the clearance width that the piston model required, utilize being close to each other of deflector to remove, formed the guide ring that can wrap up, can effectively stop the piston head and take place striking and friction with the cylinder inner wall, increase the functional and the protectiveness of device.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a top view of the turntable of the present invention;

FIG. 3 is an enlarged view of the structure at A of FIG. 2 according to the present invention;

fig. 4 is a bottom view of the sealing plate of the present invention.

In the figure: 1. a seal member; 2. a rubber elastomer; 3. a high strength plastic retainer ring; 4. a hinged seat; 5. inserting a block; 6. a sleeve; 7. a high-hardness self-lubricating polyurethane seal ring; 8. an arc-shaped hinge rod; 9. a sealing plate; 10. a turntable; 11. a slot; 12. hinging a shaft; 13. a guide plate; 14. holes are reserved.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-4, the present invention provides an embodiment: a main sealing structure of a pure water medium hydraulic support piston for preventing friction collision comprises a sealing element 1, wherein a high-strength plastic check ring 3 is arranged on the outer side of the top of the sealing element 1, a rubber elastic body 2 is arranged on the top inside the sealing element 1, a high-hardness self-lubricating polyurethane sealing ring 7 is arranged on the top of the rubber elastic body 2, a rotary table 10 is sleeved on the inner side of the high-strength plastic check ring 3, a sleeve 6 is arranged on the outer side of the high-hardness self-lubricating polyurethane sealing ring 7, the sleeve 6 and the high-strength plastic check ring 3 are mutually attached, the sealing attachment performance between components is improved, five groups of hinged shafts 12 are arranged on the top of the outer side of the sleeve 6, guide plates 13 which are mutually matched with the five groups of hinged shafts 12 are hinged on the inner sides of the five groups of hinged shafts 12, the position of a piston head can be limited and guided, five groups of hinged, the top of the sealing element 1 is provided with a sealing plate 9, the bottom of the sealing plate 9 is provided with five groups of insertion blocks 5 which are mutually clamped and matched with the insertion grooves 11, and the middle position inside the sealing plate 9 is provided with a reserved hole 14.

Further, the inside four corners department of closing plate 9 is equipped with the mounting hole, and the inboard cover of mounting hole is equipped with the sealing plug that mutually supports with high strength plastic retainer ring 3, can seal fixedly to the part.

Furthermore, a buffer zone is arranged on one side of the guide plate 13 close to each other, so that the buffer property is improved.

Furthermore, a sealing gasket is arranged on the inner side of the slot 11, so that the sealing performance of the component is enhanced.

Furthermore, the waterproof layer is arranged on the inner side of the sleeve 6, so that the waterproofness of the device is improved.

Furthermore, articulated seat 4, arc articulated rod 8, articulated shaft 12 and deflector 13 are articulated linkage cooperation, can adjust guide structure's interval.

The working principle is as follows: when the device is used, the friction and resistance generated in a hydraulic support and a pure water medium are reduced by utilizing the sealing contact formed by the high-hardness self-lubricating polyurethane sealing ring 7 and a sealing piece, so that the anti-extrusion performance of the sealing ring is improved, the sleeve 6 is sleeved on the outer side of the high-hardness self-lubricating polyurethane sealing ring 7, the turntable 10 is sleeved on the outer side of the sleeve 6 and is hinged and linked with the hinging seat 4, the arc-shaped hinging rod 8, the hinging shaft 12 and the guide plate 13, the turntable 10 drives the arc-shaped hinging rod 8 to close or open the guide plate 13 under the hinging coordination of the hinging shaft 12 by rotating the body of the turntable 10, so that the guide ring formed by the guide plate 13 is suitable for the size width of a piston head, the functionality and the adjustment convenience of the device are improved, after the turntable 10 rotates to an ideal angle, the sealing plate 9 drives the insertion block 5 to be clamped and fixed in the slot, increase sealing member 1's sealed laminated structure simultaneously, increase the holistic steadiness of device, utilize the direction limit structure that deflector 13 formed, prevent that the piston head from producing the collision with the cylinder at the during operation, causing the part to damage, increase the protectiveness of device.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.