A hydraulic support tail beam loading device with adjustable loading angle

Abstract

The invention relates to the technical field of super-large tonnage hydraulic support test benches, and relates to a hydraulic support tail beam loading device with adjustable loading angle, comprising a bottom beam frame and a fixed bottom beam, wherein a movable bottom beam is arranged above the fixed bottom beam; a tail beam loading device is arranged at the rear end of the movable bottom beam; the tail beam loading device comprises a base and a tail beam loading body; the base is fixedly connected to the movable bottom beam, a cross beam is arranged on the outer side of the base, a tail beam loading oil cylinder is embedded in the cross beam, a piston rod of the tail beam loading oil cylinder is connected to a pressure beam, and the pressure beam is driven to move by the expansion and contraction of the tail beam loading oil cylinder, so that the pressure beam loads the hydraulic support tail beam; the invention has the following advantages: an independent tail beam loading mechanism is provided, and a loading test can be carried out on the hydraulic support tail beam in a targeted manner; the tail beam loading mechanism is designed to be flip-type, and a corresponding angle can be flipped according to the test frame type to meet the actual loading needs; the need for loading the hydraulic support tail beam of different models can be met.

Description

Technical Field

[0001] The invention relates to the technical field of super-large tonnage hydraulic support test benches, in particular to a hydraulic support tail beam loading device with adjustable loading angle. Background Art

[0002] my country's coal resources have generally entered the deep mining stage. The high stress and strong disturbance in the deep cause the damage of dynamic disasters such as rock burst to become more severe. In severe cases, it will cause the tunnel of several hundred meters to shrink and deform instantly, collapse and damage the support body. In response to this engineering problem, the development of support equipment with anti-impact and anti-impact characteristics is urgently needed in the deep mining stage of mines with dynamic disasters such as rock burst.

[0003] Hydraulic support is a key support equipment in the process of coal mining. The roof of the fully-mechanized mining face acts directly on the top beam of the hydraulic support in the form of external load. The hydraulic support needs to provide safe and reliable support for the roof of the working face to prevent the rocks that fall due to the broken roof from falling into the supporting working face, and play the role of isolating the goaf. When working, it is used in conjunction with the coal mining machine, and can realize a whole set of processes such as lifting, pushing, lowering and moving, which improves the production efficiency of the coal mining machine, reduces the workload of workers, and ensures the safety of workers to the greatest extent. However, the underground geographical environment of coal mines is complex and the working conditions are quite harsh; but with the increase in the mining height area of ​​the tunnels in recent years, the height of the support is getting higher and higher, and the volume and tonnage of the corresponding hydraulic support are also increasing accordingly. In addition, the increase in the length of the fully-mechanized mining face of the coal mine and the intensification of the coal wall slabs all increase the load on the support during work, resulting in damage to key components. Therefore, in the current situation where the call for coal mine safety is getting higher and higher, the production quality of the hydraulic support is particularly important.

[0004] As the coal industry and related departments at home and abroad have successively formulated and issued relevant industry standards and enterprise standards for more comprehensive testing of hydraulic supports, such as support performance test, strength test, and loading method test, the reliability of hydraulic supports has been ensured. As an important equipment in the quality inspection of hydraulic supports, the hydraulic support test bench has received more and more attention and attention. At present, the test bench shield beam loading mechanism and tail beam loading mechanism share the same mechanism, and it is impossible to carry out targeted loading tests on the tail beam and shield beam of the support. The loading mechanism is always suspended under the middle beam, which occupies the test space of the hydraulic support, which is not conducive to the hydraulic support entering and exiting the test bench, and increases the difficulty of the loading test of the hydraulic support. In actual working conditions, the protective beam of the hydraulic support needs to apply a certain pressure to the coal wall to prevent the coal wall from collapsing. Therefore, a certain pressure needs to be applied to the telescopic cylinder of the tail beam. At the same time, it also needs to bear the load of the collapsed top coal and roof. Its action position is not fixed. Therefore, when conducting experimental research on the tail beam of the hydraulic support, it is necessary to adjust the force points of the tail beam to simulate the actual load conditions of the tail beam to the greatest extent. At the same time, it is expected that the hydraulic support test bench can adapt to multiple models of hydraulic support tail beams to improve the applicability of the test bench. Summary of the invention

[0005] The present invention provides a hydraulic support tail beam loading device with adjustable loading angle, which can overcome certain defects of the prior art.

[0006] According to the present invention, a tail beam loading device of a hydraulic support with adjustable loading angle comprises a bottom beam frame and a fixed bottom beam, wherein the fixed bottom beam is fixedly arranged in the bottom beam frame, a movable bottom beam is arranged above the fixed bottom beam, and the movable bottom beam can move up and down along the vertical support column of the bottom beam frame; a hydraulic support is placed above the movable bottom beam, a middle beam for loading the hydraulic support is arranged above the hydraulic support, and the middle beam can move up and down along the column; a tail beam loading device is arranged at the rear end of the movable bottom beam;

[0007] The tail beam loading device includes a base and a tail beam loading body; the base is fixedly connected to the movable bottom beam, the tail beam loading body is hinged to the base, a cross beam is provided on the outside of the base, a tail beam loading cylinder is embedded in the cross beam, the piston rod of the tail beam loading cylinder is connected to a pressure beam, and the pressure beam is moved by the extension and retraction of the tail beam loading cylinder, so that the pressure beam loads the tail beam of the hydraulic support.

[0008] Preferably, a flip seat is provided on the lower side of the base, one side of the flip seat is fixedly connected to the movable bottom beam and has a certain distance from the base, and a flip cylinder is provided at the other end of the flip seat, the cylinder barrel of the flip cylinder is hinged to the flip seat, and the piston rod of the flip cylinder is hinged to the tail beam loading body, so that the tail beam loading body is driven to rotate relative to the base through the extension and retraction of the flip cylinder, thereby realizing the flipping of the tail beam loading device and realizing the loading of the hydraulic support tail beam at different angles.

[0009] Preferably, a first guide column is fixedly provided between the cross beam and the base, and at the same time, the pressure beam is slidably sleeved with the first guide column, so that the first guide column guides the pressure beam, and the action position is accurate when the pressure beam loads the tail beam.

[0010] Preferably, a second guide column is provided on the outer side of the first guide column, the crossbeam is arranged on the second guide column, and a crossbeam height adjustment cylinder is provided on the lower side of the crossbeam, the cylinder barrel of the crossbeam height adjustment cylinder is connected to the tail beam loading body, and the piston rod of the crossbeam height adjustment cylinder is connected to the crossbeam, and the crossbeam is driven to slide up and down along the second guide column by the extension and retraction of the crossbeam height adjustment cylinder, so as to realize loading of the tail beam of the hydraulic support at different heights.

[0011] Preferably, a latch cylinder is provided at the connection between the cross beam and the second guide column, the cylinder barrel of the latch cylinder is fixedly connected to the cross beam, a square pin is fixedly provided at the end of the piston rod of the latch cylinder, and a latch groove is provided on the second guide column. The square pin is moved by the extension and retraction of the latch cylinder, so that the square pin is inserted into the latch groove to realize the positioning of the cross beam.

[0012] Preferably, the first guide post and the second guide post are integrally formed, and a plurality of latch grooves are axially provided on the second guide post.

[0013] Preferably, a first guide column and a second guide column are provided on both the left and right sides of the crossbeam.

[0014] Preferably, two crossbeam height adjustment cylinders are provided, which are arranged on the left and right sides of the crossbeam.

[0015] Preferably, the latch cylinder and the square pin are respectively provided on the left and right sides of a second guide column, and the latch groove on the second guide column is arranged in a ring shape.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The tail beam loading device and the shield beam loading device are designed separately, with an independent tail beam loading mechanism, which can carry out targeted loading tests on the tail beam of the hydraulic support.

[0018] 2. The tail beam loading mechanism is designed to be flip-type, which can be flipped to the corresponding angle according to the test frame type to meet the actual loading needs. When there is a test task, the loading mechanism can be flipped to the appropriate position. When there is no work task, the loading mechanism can be flipped to the side of the movable beam, reducing the space occupancy of the test bench and facilitating the hydraulic support to enter and exit the test bench.

[0019] 3. A groove is set on the column of the tail beam loading mechanism, and a square pin can be inserted into the groove to limit the position of the cross beam to meet the need of loading the tail beam of the hydraulic support of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall assembly of the hydraulic support test bench and the hydraulic support placement of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure from another viewing angle of the present invention.

[0023] in:

[0024] 1. Bottom beam frame; 2. Fixed bottom beam; 3. Movable bottom beam; 4. Middle beam; 5. Tail beam loading device; 501. Base; 502. Tail beam loading body; 503. Crossbeam height adjustment cylinder; 504. Crossbeam; 505. First guide column; 506. Tail beam loading cylinder; 507. Latch cylinder; 508. Pressure beam; 509. Turnover cylinder; 510. Turnover seat; 511. Square pin; 512. Second guide column; 513. Latch slot; 20. Hydraulic support base; 21. Hydraulic support tail beam; 22. Hydraulic support cover beam; 23. Hydraulic support top beam; 24. Hydraulic support guard plate. DETAILED DESCRIPTION

[0025] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0026] Example 1

[0027] like Figures 1 to 3 As shown, a tail beam loading device of a hydraulic support with adjustable loading angle comprises a bottom beam frame 1 and a fixed bottom beam 2, wherein the fixed bottom beam 2 is fixedly arranged in the bottom beam frame 1, and a movable bottom beam 3 is arranged above the fixed bottom beam 2, and the movable bottom beam 3 can move up and down along the vertical support column of the bottom beam frame 1; a hydraulic support is placed above the movable bottom beam 3, and a middle beam 4 for loading the hydraulic support is arranged above the hydraulic support; a tail beam loading device 5 is arranged at the rear end of the movable bottom beam 3;

[0028] The tail beam loading device 5 includes a base 501 and a tail beam loading body 502; the base 501 is fixedly connected to the movable bottom beam 3, the tail beam loading body 502 is hinged to the base 501, a cross beam 504 is provided on the outside of the base 501, a tail beam loading cylinder 506 is embedded in the cross beam 504, the piston rod of the tail beam loading cylinder 506 is connected to a pressure beam 508, and the pressure beam 508 is moved by the extension and contraction of the tail beam loading cylinder 506, so that the pressure beam 508 loads the tail beam of the hydraulic support.

[0029] In order to further improve the performance of the present invention, a flip seat 510 is provided on the lower side of the base 501, one side of the flip seat 510 is fixedly connected to the movable bottom beam 3 and has a certain distance from the base 501, and a flip cylinder 509 is provided at the other end of the flip seat 510, the cylinder barrel of the flip cylinder 509 is hinged to the flip seat 510, and the piston rod of the flip cylinder 509 is hinged to the tail beam loading body 502, so that the tail beam loading body 502 is driven to rotate relative to the base 501 through the extension and retraction of the flip cylinder 509, thereby realizing the flipping of the tail beam loading device 5 and realizing the loading of the hydraulic support tail beam at different angles.

[0030] A first guide column 505 is fixedly provided between the cross beam 504 and the base 501 . Meanwhile, the pressure beam 508 is slidably sleeved with the first guide column 505 , so that the first guide column 505 guides the pressure beam 508 , and the pressure beam 508 has a more accurate position when loading the tail beam.

[0031] A second guide column 512 is provided on the outer side of the first guide column 505, and the crossbeam 504 is arranged on the second guide column 512. A crossbeam height adjustment cylinder 503 is provided on the lower side of the crossbeam 504. The cylinder barrel of the crossbeam height adjustment cylinder 503 is connected to the tail beam loading body 502, and the piston rod of the crossbeam height adjustment cylinder 503 is connected to the crossbeam 504. The crossbeam 504 is driven to slide up and down along the second guide column 512 by the extension and retraction of the crossbeam height adjustment cylinder 503, so as to realize the loading of the tail beam of the hydraulic support at different heights.

[0032] A latch cylinder 507 is provided at the connection between the cross beam 504 and the second guide column 512. The cylinder barrel of the latch cylinder 507 is fixedly connected to the cross beam 504. A square pin 511 is fixedly provided at the end of the piston rod of the latch cylinder 507. A latch groove 513 is provided on the second guide column 512. The square pin 511 is moved by the extension and retraction of the latch cylinder 507, so that the square pin 511 is inserted into the latch groove 513 to realize the positioning of the cross beam 504.

[0033] In this embodiment, the first guide post 505 and the second guide post 512 are integrally formed, and a plurality of latch slots 513 are axially disposed on the second guide post 512 .

[0034] In this embodiment, a first guide post 505 and a second guide post 512 are disposed on both sides of the left and right sides of the crossbeam 504 .

[0035] In this embodiment, two beam height adjustment cylinders 503 are provided, which are arranged on the left and right sides of the beam 504 .

[0036] In this embodiment, a latch cylinder 507 and a square pin 511 are respectively provided on the left and right sides of a second guide column 512, and the latch groove 513 on the second guide column 512 is arranged in a ring shape.

[0037] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A tail beam loading device for a hydraulic support with an adjustable loading angle, comprising a bottom beam frame (1) and a fixed bottom beam (2), wherein the fixed bottom beam (2) is fixedly arranged in the bottom beam frame (1), and a movable bottom beam (3) is arranged above the fixed bottom beam (2), and the movable bottom beam (3) can move up and down along a vertical support column of the bottom beam frame (1); a hydraulic support is placed above the movable bottom beam (3), and a middle beam (4) for loading the hydraulic support is arranged above the hydraulic support, and the middle beam (4) can move up and down along a column (6); the characteristics are: A tail beam loading device (5) is provided at the rear end of the movable bottom beam (3); The tail beam loading device (5) comprises a base (501) and a tail beam loading body (502); the base (501) is fixedly connected to the movable bottom beam (3); the tail beam loading body (502) is hinged to the base (501); a cross beam (504) is provided on the outside of the base (501); a tail beam loading cylinder (506) is embedded in the cross beam (504); a piston rod of the tail beam loading cylinder (506) is connected to a pressure beam (508); the pressure beam (508) is driven to move by the expansion and contraction of the tail beam loading cylinder (506), so that the pressure beam (508) loads the tail beam of the hydraulic support; A turning seat (510) is provided at the lower side of the base (501), one side of the turning seat (510) is fixedly connected to the movable bottom beam (3) and is at a certain distance from the base (501), and a turning cylinder (509) is provided at the other end of the turning seat (510), the cylinder barrel of the turning cylinder (509) is hinged to the turning seat (510), and the piston rod of the turning cylinder (509) is hinged to the tail beam loading body (502), so that the tail beam loading body (502) is driven to rotate relative to the base (501) by the extension and retraction of the turning cylinder (509), thereby realizing the turning of the tail beam loading device (5), and realizing the loading of the hydraulic support tail beam at different angles.

2. The tail beam loading device of a hydraulic support with adjustable loading angle according to claim 1 is characterized in that: A first guide column (505) is fixedly provided between the cross beam (504) and the base (501), and the pressure beam (508) is slidably sleeved with the first guide column (505) so that the first guide column (505) guides the pressure beam (508), and the pressure beam (508) has an accurate action position when loading the tail beam.

3. The tail beam loading device of a hydraulic support with adjustable loading angle according to claim 2 is characterized in that: A second guide column (512) is provided on the outer side of the first guide column (505), the crossbeam (504) is arranged on the second guide column (512), a crossbeam height adjustment cylinder (503) is provided on the lower side of the crossbeam (504), the cylinder barrel of the crossbeam height adjustment cylinder (503) is connected to the tail beam loading body (502), the piston rod of the crossbeam height adjustment cylinder (503) is connected to the crossbeam (504), and the crossbeam (504) is driven to slide up and down along the second guide column (512) by the extension and retraction of the crossbeam height adjustment cylinder (503), so as to load the tail beam of the hydraulic support at different heights.

4. The tail beam loading device of a hydraulic support with adjustable loading angle according to claim 3 is characterized in that: A latch cylinder (507) is provided at the connection between the cross beam (504) and the second guide column (512); the cylinder barrel of the latch cylinder (507) is fixedly connected to the cross beam (504); a square pin (511) is fixedly provided at the end of the piston rod of the latch cylinder (507); a latch groove (513) is provided on the second guide column (512); the square pin (511) is moved by the extension and retraction of the latch cylinder (507), so that the square pin (511) is inserted into the latch groove (513), thereby realizing the positioning of the cross beam (504).

5. The tail beam loading device of a hydraulic support with adjustable loading angle according to claim 4 is characterized in that: The first guide column (505) and the second guide column (512) are integrally formed, and a plurality of latch slots (513) are axially provided on the second guide column (512).

6. The tail beam loading device of a hydraulic support with adjustable loading angle according to claim 5, characterized in that: A first guide column (505) and a second guide column (512) are provided on both the left and right sides of the crossbeam (504).

7. The tail beam loading device of a hydraulic support with adjustable loading angle according to claim 6, characterized in that: Two crossbeam height adjustment cylinders (503) are provided, which are arranged on the left and right sides of the crossbeam (504).

8. The tail beam loading device of a hydraulic support with adjustable loading angle according to claim 7, characterized in that: The latch oil cylinder (507) and the square pin (511) are respectively provided on the left and right sides of a second guide column (512), and the latch groove (513) on the second guide column (512) is arranged in a ring shape.

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