CN-121977035-A - Non-Newtonian fluid energy absorber for impact-pressure resistance and hydraulic support

CN121977035ACN 121977035 ACN121977035 ACN 121977035ACN-121977035-A

Abstract

The application provides a non-Newtonian fluid energy-absorbing device for impact pressure resistance and a hydraulic support, which comprises an energy-absorbing container and a container bottom plate, wherein the energy-absorbing container is a closed container which is filled with shear thickening fluid and is made of plastic materials, the energy-absorbing container is arranged on the container bottom plate and comprises a cylindrical section main body, the container bottom plate is used for supporting the cylindrical section main body on the top of the hydraulic support so that the cylindrical section main body is propped against a top plate to be supported, a honeycomb core is arranged in the cylindrical section main body, the honeycomb core comprises an elastic ring, a honeycomb structure is distributed in an annular cavity of the elastic ring, and the honeycomb structure is used for disturbing the shear thickening fluid. According to the application, through the composite energy-absorbing compression-resistant structure of the cylindrical section main body, the honeycomb core and the shear thickening fluid, the whole rigidity of the energy-absorbing container is enhanced, and meanwhile, the energy-absorbing container has high-efficiency buffering and energy-absorbing performance.

Inventors

YANG WENMING
ZHANG XIANG
LI YUHANG
FENG SHICHAO
ZHANG JIYE
FU ZHAOMING
ZHANG ZHENGWEI
WU HAO
GAO LIBIN

Assignees

中创智领(郑州)工业技术集团股份有限公司
郑州煤矿机械集团有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260129

Claims (10)

1. A non-Newtonian fluid energy absorber for impact compression is characterized by comprising an energy absorbing container (1) and a container bottom plate (2), The energy-absorbing container (1) is a closed container which is filled with shear thickening fluid (15) and made of plastic materials, the energy-absorbing container (1) is mounted on the container bottom plate (2), the energy-absorbing container (1) comprises a cylindrical section main body (11), the axis of the cylindrical section main body (11) is parallel to the plate surface of the container bottom plate (2), and the container bottom plate (2) is used for supporting the cylindrical section main body (11) on the top of a hydraulic support so that the cylindrical section main body (11) is propped against a top plate to be supported; Be equipped with honeycomb core (14) in cylindrical segment main part (11), honeycomb core (14) are including being used for supporting elastic ring (141) of cylindrical segment main part (11) inner wall, be full honeycomb (142) in the ring chamber of elastic ring (141), elastic ring (141) with cylindrical segment main part (11) are coaxial, honeycomb unit cell of honeycomb (142) with elastic ring (141) are coaxial, honeycomb (142) are made with energy-absorbing by ductile material, honeycomb (142) are used for disturbing shear thickening fluid (15).
2. A non-newtonian fluid energy absorber for impact compression according to claim 1, wherein the energy absorber vessel (1) tapers outwardly in radial dimension beyond the ends of the cylindrical segment body (11) for stiffening the energy absorber vessel (1) and reducing stress concentrations.
3. Non-newtonian fluid energy absorber for impact pressure according to claim 2, characterized in that the energy absorber vessel (1) is provided with the honeycomb core (14) at a location outside the two ends of the cylindrical section body (11) for enhancing the cushioning and energy absorbing properties.
4. A non-newtonian fluid energy absorber for impact compression according to claim 1 or 2 or 3, wherein the cylindrical section body (11) is in line contact with the container bottom plate (2) for concentrating the stress at line contact to induce deformation of the cylindrical section body (11) for absorbing energy.
5. A non-newtonian fluid energy absorber for impact compression according to claim 2 or 3, wherein the energy absorber (1) further comprises a segment (12) and a truncated cone segment (13) arranged at two ends of the cylindrical segment main body (11), the energy absorber (1) is mounted on the container bottom plate (2) through a container fixing assembly, the container fixing assembly comprises a bottom segment baffle (21), an upper segment supporting seat (22) and an upper segment clamp (23), the bottom segment baffle (21) is provided with a segment-shaped concave cavity for being embedded into the segment (12) so as to limit the energy absorber (1) axially, the side wall of the truncated cone segment (13) is embedded into the upper segment supporting seat (22) so as to support and limit the energy absorber (1) radially, the upper segment clamp (23) is connected with the upper segment supporting seat (22) so as to clamp the truncated cone segment (13), and the upper segment clamp (23) is abutted against the side wall of the truncated cone segment (13) through a flexible piece (24) so as to be used for deformation of the truncated cone segment (13).
6. The non-Newtonian fluid energy absorber for impact compression according to claim 5, wherein the container bottom plate (2) is provided with at least one pair of energy absorbing containers (1) arranged in pairs, the tops of the truncated cone segments (13) of the energy absorbing containers (1) arranged in pairs are oppositely arranged, a buffer pad (25) is arranged between the energy absorbing containers (1) arranged in pairs, two sides of the upper segment clamp (23) are respectively connected to two upper segment supporting seats (22), and two sides of the upper segment clamp (23) are respectively provided with two flexible abutting pieces (24) which are respectively abutted against the two energy absorbing containers (1) arranged in pairs.
7. Non-newtonian fluid energy absorber for impact pressure according to claim 1 or 2 or 3 or 6, characterized in that the energy absorber vessel (1) is externally coated with an elastic polymer protection layer for absorbing energy and for insulating the energy absorber vessel (1).
8. A hydraulic support for impact pressure resistance, comprising a top beam body (3), characterized in that a non-newtonian fluid energy absorbing device for impact pressure resistance according to any one of claims 1-7 is arranged on the top of the top beam body (3), the container bottom plate (2) is arranged on the top of the top beam body (3), the top beam body (3) is propped against a top plate to be supported through the energy absorbing container (1), and the energy absorbing container (1) is configured such that when the hydraulic support is supported with a supporting force smaller than or equal to rated working resistance, the stress of any point on the energy absorbing container (1) is smaller than the yield strength of the material of the point.
9. The hydraulic support for impact and pressure resistance according to claim 8, wherein the container bottom plate (2) is mounted on the top of the top beam body (3) through a fixing bolt, the fixing bolt comprises a T-shaped bolt (31), a straight through hole for penetrating through the bolt head of the T-shaped bolt (31) is formed in the top beam body (3), a bolt clamping plate (32) is fixedly arranged at the bottom of the straight through hole, and a cross clamping groove communicated with the straight through hole in the bolt clamping plate (32).
10. The hydraulic support for impact-resistant compression as claimed in claim 9, wherein a plurality of the container bottom plates (2) are arranged in a row on the top of the top beam body (3) along the front-rear direction of the hydraulic support, at least two rows of the container bottom plates (2) are arranged on the top beam body (3), a reinforcing plate (33) installed at the bottom of the straight through hole is arranged inside the top beam body (3), a bolting groove for enabling the bolt head of the T-shaped bolt (31) to rotate in the reinforcing plate is arranged on the reinforcing plate, the reinforcing plate (33) is used for reinforcing the structural strength of the straight through hole, and the bolting groove is used for preventing the T-shaped bolt (31) from falling.

Description

Non-Newtonian fluid energy absorber for impact-pressure resistance and hydraulic support Technical Field The invention relates to the field of hydraulic support equipment, in particular to a non-Newtonian fluid energy absorber for impact pressure resistance and a hydraulic support. Background When rock burst occurs, the representation form of the top plate is represented by sudden fracture and sinking of the top plate, rock mass and anchorage device casting, and the action on the hydraulic support can lead to the shrinkage of the upright post, the compression and even the cylinder explosion, and at present, a part of the hydraulic support adopts a buffering energy absorbing mechanism made of plastic materials or elastic materials for buffering. The prior art of plastic materials is adopted, such as ' self-moving type energy-absorbing impact-resistant roadway advanced support design and research ' published in the journal of coal school journal ' in 2016 (authors Tang Zhi and the like), a thin-wall hexagonal energy-absorbing impact-resistant member is arranged on a top beam, an expanded diameter type energy-absorbing impact-resistant member is arranged on a stand column, so that the support has an energy-absorbing yielding impact-resistant function, an energy-absorbing top beam suitable for a roadway impact-resistant hydraulic support is disclosed in Chinese patent No. 202310462988.2, energy absorption is carried out by adopting an energy-absorbing component with corrugated plates, and energy absorption is carried out by adopting a honeycomb structure body as an energy-absorbing buffer roadway support device disclosed in Chinese patent No. 202221286194.2. The prior art adopting elastic materials, such as a disc spring type impact energy absorption protection device disclosed in Chinese patent No. 202310154228.5, is provided with a support upright post with a three-stage telescopic structure and a high-strength disc spring in a sleeved mode for use, and is good in energy absorption effect and impact pressure peak value buffering effect when buffering and transmitting impact pressure peak values to the surface of a top beam of an advanced hydraulic support, and such as a mining electric support with a linear motor driving push rod and a buffering top beam disclosed in Chinese patent No. 202510387570.9, wherein a plurality of composite shock absorbers are arranged on the top beam and uniformly distribute impact loads, so that stress concentration is avoided, and the impact resistance of the top beam is improved. But based on the working content of the hydraulic bracket, the hydraulic bracket itself needs to support the top plate at a working load within its rated working resistance range. In the foregoing disclosure, when the hydraulic support supports the top plate with static pressure load, no matter the buffering energy absorbing mechanism made of plastic material or elastic material is adopted, a flexible cushion layer is added between the top beam and the top plate, which reduces the overall rigidity of the support system, is unfavorable for the stability of the top plate, and the flexible cushion layer also causes the response delay of the sensor system of the hydraulic support, so that the impact ground pressure cannot be timely handled through the existing safety valve system. Therefore, how to design a buffering and energy-absorbing mechanism of a hydraulic support, the roadway top plate can be supported with stronger rigidity when the hydraulic support is subjected to static pressure load, and meanwhile, the buffering and energy-absorbing mechanism has high-efficiency buffering and energy-absorbing performance, and an ideal technical solution is always sought. Disclosure of Invention The invention aims at overcoming the defects of the prior art, thereby providing a non-Newtonian fluid energy absorber for impact pressure resistance and a hydraulic bracket, through the composite energy-absorbing compression-resistant structure of the cylindrical section main body, the honeycomb core and the shear thickening fluid, the whole rigidity of the energy-absorbing container is enhanced, and meanwhile, the energy-absorbing container has high-efficiency buffering and energy-absorbing performance. In order to achieve the aim, the technical scheme adopted by the invention is that the non-Newtonian fluid energy absorber for impact pressure resistance comprises an energy absorbing container and a container bottom plate, wherein the energy absorbing container is a closed container which is filled with shear thickening fluid and made of plastic materials, the energy absorbing container is arranged on the container bottom plate and comprises a cylindrical section main body, the axis of the cylindrical section main body is parallel to the surface of the container bottom plate, the container bottom plate is used for supporting the cylindrical section main body on the top of a hydraulic support so that the cylindrical sect