CN218716869U

CN218716869U - Anti-impact hydraulic support

Info

Publication number: CN218716869U
Application number: CN202221286281.8U
Authority: CN
Inventors: 张定堂; 张继业; 李鹏; 张兴辉; 陈戈; 孙红发; 杨文明; 黄自炎; 李吉堂; 张建如
Original assignee: Zhengzhou Coal Mining Machinery Group Co Ltd
Current assignee: Zhengzhou Coal Mining Machinery Group Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2023-03-24
Anticipated expiration: 2032-05-26

Abstract

The utility model discloses an anti-impact hydraulic support, which comprises a hydraulic support body, a top beam arranged above the hydraulic support body and an anti-impact upright cylinder arranged below the hydraulic support body; and a cavity type honeycomb buffer layer is embedded in the inner interlayer of the top beam. The utility model provides the high factor of safety of job site, the reliability is high, has effectively improved the effect of strutting to the rock burst tunnel.

Description

Anti-impact hydraulic support

Technical Field

The utility model relates to a colliery safety protection technical field in the pit, concretely relates to protecting against shock hydraulic support.

Background

With the increasing demand of China for coal, the coal mining depth is continuously extended, the mining range is continuously expanded, and the number and the damage degree of mines with rock burst are in a trend of obviously increasing. The rock burst is a phenomenon that strain energy in a coal rock body is suddenly, rapidly and violently released to cause the instantaneous damage of a coal rock layer structure of a working face or a roadway, so that the serious damage of the roadway and the serious casualties of personnel are caused, and therefore, the rock burst is particularly important for increasing an anti-impact structure for a hydraulic support, absorbing energy brought by the rock burst and ensuring the mining safety work.

Therefore, there is a need for an impact resistant hydraulic mount that solves the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a strong, the good, the high protecting against shock hydraulic support of security of shock-resistant effect to prior art's not enough.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an anti-impact hydraulic support comprises a hydraulic support body, a top beam arranged above the hydraulic support body and an anti-impact upright cylinder arranged below the hydraulic support body; and a cavity type honeycomb buffer layer is embedded in the inner interlayer of the top beam.

Aiming at the technical scheme, the buffer layer buffers the impact force at the top end; the anti-impact type upright cylinder conducts and buffers force when impact occurs, and can still realize the buffer protection effect when rock burst occurs under the condition that the inherent characteristics of the hydraulic support are not changed. When rock burst occurs, the top beam is mainly stressed to bear impact pressure, the cavity-embedded honeycomb buffer mechanism is gradually compressed in the impact process by virtue of the special structure of the cavity, so that stable buffer stress is provided for energy absorption, and the impact resistance effect is achieved. The impact force under the transmission is transmitted into the anti-impact type upright cylinder for buffering and absorption again after passing through the hydraulic support body with the supporting function.

Preferably, the upright cylinder comprises an anti-deviation cylinder which is sleeved at the lower part of the hydraulic support body through a connecting ring, an anti-deviation seat is arranged at the bottom of the anti-deviation cylinder, an anti-impact component is arranged between the hydraulic support body and the anti-deviation seat, and a hinged joint is arranged at the bottom of the anti-deviation seat. The anti-deviation cylinder and the anti-deviation seat can prevent the anti-impact component from being eccentrically pressed under the impact action, and the stability of the support under stress is improved.

Preferably, the impact-resistant member is a cushion column of a multi-layer cavity type honeycomb structure. The impact-resistant component can ensure that impact energy is absorbed under impact and the support can perform abdication work, has a reasonable deformation stroke, meets the stroke requirement of abdication energy absorption of the support structure, does not occupy the service space of a roadway after the support is deformed, and meets the displacement index of support. The anti-impact component can enable the support to have reasonable deformation constraint capacity and elastic buffering effect on surrounding rocks so as to prevent frequent impact of small earthquakes, rapidly reduce the peak value of impact load of the surrounding rocks, protect the support structure from being damaged by impact action and meet the requirement of anti-impact support work.

Preferably, the cushioning layer and the impact-resistant member are both hexagonal cavity honeycomb structures. The top impact is buffered, the energy is effectively controlled in the buffer structure under the impact load, and the damage to personnel and property is reduced to the greatest extent.

The utility model has the advantages that:

the utility model discloses when receiving the effect of rock burst and taking place compression deformation, buffer layer and scour protection formula stand cylinder can change kinetic energy into internal energy gradually to accomplish absorption and dissipation in the structure, absorb the energy that the rock burst brought, cushion the huge energy of rock burst, improve the security of executing the process of doing, promote the efficiency of construction.

The utility model discloses an embedded cavity formula honeycomb buffer layer of back timber, the dual protection of cooperation scour protection formula stand cylinder can satisfy the strut demand under the support static load, can carry out the function that the protection shocks resistance of fast buffering again when taking place to strike, has eliminated the potential safety hazard in the work progress, has improved the security of working in the pit.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a buffer layer;

FIG. 3 is a schematic view of the construction of the column cylinder;

figure 4 is a cross-sectional view of an impact member.

In the figure: the hydraulic support comprises a buffer layer 1, a top beam 2, a hydraulic support body 3, a column cylinder 4, an anti-deviation seat 5, a connecting ring 6, an anti-deviation cylinder 7, an anti-impact component 8 and a hinge joint 9.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1-4, an anti-impact hydraulic support comprises a hydraulic support body 3, a top beam 2 arranged above the hydraulic support body 3, and an anti-impact type upright cylinder 4 arranged below the hydraulic support body 3; a hexagonal cavity type honeycomb buffer layer 1 is embedded in the inner interlayer of the top beam 2.

The upright post cylinder 4 comprises an anti-deviation cylinder 7 which is sleeved at the lower part of the hydraulic support body 3 through a connecting ring 6, an anti-deviation seat 5 is arranged at the bottom of the anti-deviation cylinder 7, an anti-impact component 8 is arranged between the hydraulic support body 3 and the anti-deviation seat 5, and a hinge joint 9 is arranged at the bottom of the anti-deviation seat 5. The anti-impact member 8 is a buffer column of a hexagonal multi-layer cavity type honeycomb structure.

The utility model discloses a theory of operation: the top beam 2 is one of the main stress components of the hydraulic support, and mainly bears the supporting force of the pressure of the working face top plate on the upright post. The upper part of the top beam 2 is directly contacted with a working face top plate and is supported by the hydraulic support body 3, so that sufficient safe space is provided for bearing the load of top plate rocks and for a stope working face, a cavity type honeycomb buffer layer 1 is embedded in an internal interlayer of the cavity type honeycomb buffer layer 1, the cavity type honeycomb buffer layer 1 depends on the special structure of a cavity of the cavity type honeycomb buffer layer, and the solid phase and the gas phase or the liquid phase are mutually coupled to realize the effects of buffering and energy absorption. The hydraulic support body plays a role in supporting. The impact-proof column cylinder 4 not only has a cushioning property, but also can guide the impact-proof member 8 to prevent it from being eccentrically pressed. The anti-deviation seat 5 is horizontally arranged to ensure that the anti-impact component is not easy to deviate, and the hinged joint 9 is responsible for connecting the anti-impact type upright cylinder 4 and the support.

The apparatus elements referred to in the above embodiments are conventional apparatus elements unless otherwise specified, and the structural arrangements, operations, or controls referred to in the above embodiments are conventional in the art unless otherwise specified.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. An anti-impact hydraulic support is characterized by comprising a hydraulic support body, a top beam arranged above the hydraulic support body and an anti-impact type upright cylinder arranged below the hydraulic support body; and a cavity type honeycomb buffer layer is embedded in the inner interlayer of the top beam.

2. An impact-proof hydraulic support according to claim 1, wherein the column cylinder comprises an anti-deviation cylinder sleeved at the lower part of the hydraulic support body through a connecting ring, an anti-deviation seat is arranged at the bottom of the anti-deviation cylinder, an impact-proof component is arranged between the hydraulic support body and the anti-deviation seat, and a hinge joint is arranged at the bottom of the anti-deviation seat.

3. An impact-resistant hydraulic mount as claimed in claim 2, wherein the impact-resistant member is a cushioned column of multi-layer hollow honeycomb structure.

4. An impact-resistant hydraulic mount as claimed in claim 3, wherein the cushioning layer and impact-resistant member are each of hexagonal cavity honeycomb structure.