Self-moving hydraulic support removal device and method

Abstract

The present invention relates to the technical field of underground equipment in coal mines, and in particular to a self-moving hydraulic support withdrawal device and method, comprising a shielding assembly arranged on a fully mechanized mining working surface, the shielding assembly comprising a plurality of shielding supports arranged side by side, and a withdrawal member being provided on the front side of the shielding assembly; the withdrawal member comprising a connecting plate, the connecting plate and the shielding support being fixedly connected by a front lock connected to the front end of the shielding support, a carrying plate being vertically connected to one side of the connecting plate, two traction telescopic rods being provided on the carrying plate, the telescopic ends of the two traction telescopic rods being arranged facing each other, and the telescopic ends of the traction telescopic rods being connected to a steel wire rope; a withdrawal assembly being arranged perpendicular to the shielding assembly is provided on the other side of the connecting plate, the withdrawal assembly comprising a plurality of supports to be withdrawn being arranged in an arranged manner, and two connection points respectively connected to the other ends of the two steel wire ropes are provided on the supports to be withdrawn; the present invention facilitates the integrated withdrawal and direction adjustment of the supports to be withdrawn, thereby improving the efficiency of withdrawal.

Description

Technical Field

[0001] The present invention relates to the technical field of underground coal mine equipment, and in particular to a self-moving hydraulic support removal device and method. Background Art

[0002] The traditional hydraulic support retraction method uses a winch wire rope to pull the hydraulic support to be withdrawn, and then the hydraulic support to be withdrawn is turned 90 degrees by manual operation using a return column winch.

[0003] However, there are some problems with the above-mentioned withdrawal process. The traditional withdrawal method is intermittent withdrawal. During the entire withdrawal process of the hydraulic support, the operation links of pulling out the frame, adjusting the direction and lifting are numerous, complex and inefficient, resulting in a long withdrawal cycle, affecting the withdrawal speed of the comprehensive mining working face, causing tension in the connection of the comprehensive mining working face, occupying the mine's production time, and reducing the mine's output and economic benefits.

[0004] For example, the patent with publication number CN118532209A, named as a support bracket group for the triangular area of ​​the working face withdrawal, includes a shielding hydraulic bracket consisting of two support A frames and one support B frame and a moving beam. The specific structure is as follows: the support A frame and the support B frame are arranged side by side, and the lower end of the support A frame is connected to the moving beam through a first pushing rod, and the lower end of the support B frame is connected to the moving beam through a second pushing rod. The horizontal moving beam corresponds to the lower side of the bracket to be withdrawn, and uses the moving beam to quickly move itself; however, during the withdrawal process, the withdrawal and adjustment are separate operations, which is less efficient. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to propose a self-moving hydraulic support withdrawal device to solve the problem of affecting the withdrawal speed of the fully mechanized mining working face.

[0006] Based on the above-mentioned objectives, the present invention provides a self-moving hydraulic support withdrawal device, the withdrawal device is arranged on a comprehensive mining working surface under a mine, the withdrawal device includes a shield assembly arranged on the comprehensive mining working surface, the shield assembly includes a plurality of shield supports arranged side by side, and a withdrawal member is provided on the front side of the shield assembly; the withdrawal member includes a connecting plate, the connecting plate and the shield support are fixedly connected through a front lock connected to the front end of the shield support. One side of the connecting plate is vertically connected to a carrying plate, and the carrying plate is provided with two traction telescopic rods, the telescopic ends of the two traction telescopic rods are arranged facing each other, and the telescopic ends of the traction telescopic rods are connected to a steel wire rope; the other side of the connecting plate is provided with a withdrawal assembly arranged perpendicular to the shield assembly, and the withdrawal assembly includes a plurality of arranged supports to be withdrawn, and the supports to be withdrawn are provided with two connection points respectively connected to the other ends of the two steel ropes, and the two connection points are respectively arranged on the front side and the rear side of the support to be withdrawn.

[0007] Optionally, the connection point is a hinged ear seat or a locking piece.

[0008] Optionally, one of the connection points is located at the front end of the bracket to be withdrawn, and another connection point is provided on a side of the bracket to be withdrawn facing the shielding bracket and away from the front end of the bracket to be withdrawn.

[0009] Optionally, the two connection points are a first lock buckle and a second lock buckle, the first lock buckle is located at the front end of the bracket to be withdrawn, and the second lock buckle is provided on a side of the bracket to be withdrawn facing the shield bracket and away from the first lock buckle.

[0010] Optionally, pulleys are respectively provided at both ends of the carrying plate, and the other ends of the two steel ropes are respectively passed around the two pulleys and connected to the two connection points.

[0011] Optionally, a plurality of support members are provided on the mounting plate and the connecting plate, and the support members include vertically arranged support telescopic rods, and a support plate is provided on the upper end of the support telescopic rods.

[0012] Optionally, the supporting telescopic rod and the traction telescopic rod are air cylinders, oil cylinders or electric cylinders.

[0013] Optionally, a plurality of diagonal braces are provided at the lower portion of the supporting telescopic rod.

[0014] A self-moving hydraulic support withdrawal method, wherein the shielding support and the support to be withdrawn are supported by a top plate to support the top of the fully-mechanized mining working face in the mine, and several ordinary hydraulic supports are pulled out at the tail of the fully-mechanized mining working face as the shielding support of the shielding assembly and arranged at the tail of the fully-mechanized mining working face, and the shielding support is perpendicular to the installation direction of the support to be withdrawn, and then the front push front lock of the four shielding supports is connected to the connecting plate, and the installation position of the carrying plate is located on the side of the connecting plate away from the support to be withdrawn, and the four shielding supports in the shielding assembly are lowered first, and then the four shielding supports in the shielding assembly are moved forward to the side of the withdrawal assembly, and the withdrawal member is moved forward accordingly, and the shielding assembly is moved to the appropriate position before the support is raised. After the shielding assembly lifts and supports the top plate, the support to be removed that is closest to the shielding support is controlled to be lowered to support it. The top of the support to be removed is separated from the top plate, and then the two connection points on the support to be removed that is closest to the shielding support are respectively connected to the other ends of the two steel ropes, and the two traction telescopic rods are started to facilitate the withdrawal of the support to be removed. After the front end of the support to be removed moves to the appropriate position, the traction telescopic rod on the rear side of the support to be removed is controlled to continue working, so as to facilitate the adjustment of the support to be removed by 90 degrees, so that the withdrawal and adjustment of the support to be removed are integrated, and then the support to be removed is withdrawn by traction of the winch.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a self-moving hydraulic support withdrawal device, the shielding support and the support to be withdrawn support top plate are used to support the top of the comprehensive mining working face in the mine, and several ordinary hydraulic supports are pulled out at the tail of the comprehensive mining working face as the shielding support of the shielding assembly and arranged at the tail of the comprehensive mining working face. Four shielding supports are selected and set, which are perpendicular to the installation direction of the support to be withdrawn, and then the front push front locks of the four shielding supports are connected to the connecting plate. The connecting plate and the carrying plate can be connected by a pin shaft. The installation position of the carrying plate is located on the side of the connecting plate away from the support to be withdrawn. The four shielding supports in the shielding assembly are lowered first, and the four shielding supports in the shielding assembly are moved forward to the side of the withdrawal assembly, and the withdrawing member is moved forward accordingly. After the shielding assembly moves to the appropriate position, it is lifted and supported. The shielding assembly lifts and supports the top After the plate is supported, the support to be removed that is closest to the protective support is controlled to be lowered to support it. The top of the support to be removed is separated from the top plate, and then the two connection points on the support to be removed that is closest to the protective support are respectively connected to the other ends of the two steel ropes, and the two traction telescopic rods are started to facilitate the extraction of the support to be removed. After the front end of the support to be removed is moved to the appropriate position, the traction telescopic rod on the rear side of the support to be removed is controlled to continue working, so as to facilitate the adjustment of the support to be removed by 90 degrees, so that the extraction and adjustment of the support to be removed are integrated, which improves the efficiency of the hydraulic support withdrawal, reduces the withdrawal cycle, and also improves the construction safety of the workers, reduces the labor intensity, and improves the output and economic benefits of the mine. Then the support to be removed is withdrawn by traction of the winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the drawer of the present invention;

[0020] Figure 4 Schematic diagram of the top view of the drawer of the present invention;

[0021] Figure 5 This is a schematic diagram of the connection structure between the traction telescopic rod and the steel wire rope of the present invention;

[0022] Figure 6 Schematic diagram of the connection structure of the arc guide plate of the present invention.

[0023] In the figure: 1. Bracket to be removed; 11. First locking buckle; 102. Second locking buckle; 2. Protective bracket; 21. Front locking buckle; 3. Carrying plate; 4. Support telescopic rod; 5. Support plate; 6. Traction telescopic rod; 7. Pulley; 8. Wire rope; 9. Connecting plate; 10. Arc guide plate; 11. Slide groove; 12. Arc segment; 13. Oblique segment; 14. Take-up shaft; 15. Traction line; 16. Connecting line; 17. Connecting arm. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0025] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 5 As shown, a self-moving hydraulic support withdrawal device is arranged on the fully mechanized mining working surface under the mine, and the withdrawal device includes a shield assembly arranged on the fully mechanized mining working surface, the shield assembly includes a plurality of shield supports 2 arranged side by side, and a withdrawal member is provided on the front side of the shield assembly; the withdrawal member includes a connecting plate 9, the connecting plate 9 and the shield support 2 are fixedly connected through a front lock 21 connected to the front end of the shield support 2, one side of the connecting plate 9 is vertically connected to a carrying plate 3, and two traction telescopic rods 6 are provided on the carrying plate 3, and the telescopic ends of the two traction telescopic rods 6 are arranged facing each other, and the telescopic ends of the traction telescopic rods 6 are connected to a steel wire rope 8; the other side of the connecting plate 9 is provided with a withdrawal assembly arranged perpendicular to the shield assembly, and the withdrawal assembly includes a plurality of arranged supports 1 to be withdrawn, and the support 1 to be withdrawn is provided with two connection points respectively connected to the other ends of the two steel wire ropes 8, and the two connection points are respectively arranged on the front and rear sides of the support 1 to be withdrawn.

[0027] After the support 1 to be removed is lifted, the support 2 is lifted and the support 1 to be removed is lifted. After the lifting of the lifting device 1, the lifting device 1 is lifted up and the lifting of the lifting device 1 is completed, and the lifting of the lifting device 1 is completed.

[0028] The connection point can be a hinged ear seat or a locking piece.

[0029] One of the connection points is located at the front end of the bracket to be removed 1, and another connection point is provided on the side of the bracket to be removed 1 facing the shielding bracket 2 and away from the front end of the bracket to be removed 1.

[0030] The two connection points are a first lock buckle 101 and a second lock buckle 102. The first lock buckle 101 is located at the front end of the bracket 1 to be removed, and the second lock buckle 102 is provided on the side of the bracket 1 to be removed facing the shielding bracket 2, away from the first lock buckle 101.

[0031] Pulleys 7 are respectively provided at both ends of the carrying plate 3 , and the other ends of the two steel ropes 8 pass around the two pulleys 7 and are connected to the two connection points.

[0032] like Figure 3 、 Figure 4 and Figure 5 As shown, a plurality of support members are provided on the carrying plate 3 and the connecting plate 9, and the support members include a vertically arranged support telescopic rod 4, and a support plate 5 is provided on the upper end of the support telescopic rod 4. The support telescopic rod 4 is extended to control the support plate 5 to support the top plate. The self-supporting structure facilitates the maintenance of the top plate, increases the stability of the device, and thus reduces the connection tension of the comprehensive mining working face. The lifting and lowering of the support plate 5 are synchronized with the lifting and lowering support of the shielding bracket 2.

[0033] The supporting telescopic rod 4 and the pulling telescopic rod 6 can be air cylinders, oil cylinders or electric cylinders.

[0034] The lower part of the supporting telescopic rod 4 is provided with a plurality of diagonal braces, and the upper ends of the diagonal braces are connected to the side walls of the supporting telescopic rod 4, so as to strengthen the supporting telescopic rod 4 and reduce the possibility of the supporting telescopic rod 4 tipping over.

[0035] An oblique reinforcing plate is connected between the mounting plate 3 and the connecting plate 9 to strengthen the connection between the mounting plate 3 and the connecting plate 9 .

[0036] like Figure 6As shown, an arc-shaped guide plate 10 is provided obliquely above the drawer, and the arc-shaped guide plate 10 is connected to the carrying plate 3 by driving the telescopic rod. The arc-shaped guide plate 10 includes a first guide plate, a second guide plate and a connecting guide plate. The first guide plate is connected to the second guide plate through the connecting guide plate. The connecting guide plate is in an arc shape. The first guide plate and the second guide plate are respectively arranged parallel to the carrying plate 3 and the connecting plate 9. A slide groove 11 is provided on the arc-shaped guide plate 10, and the slide groove 11 includes a first strip segment, an arc segment 12, an oblique segment 13 and a second strip segment. The first strip segment, the arc segment 12, the oblique segment 13 and the second strip segment are connected in sequence The oblique section 13 and the second strip section are both arranged on the second guide plate, and one end of the oblique section 13 connecting the arc section 12 is further away from the shield bracket 2 than the other end of the oblique section 13. A plurality of sliders are slidingly arranged in the slide groove 11, and rollers are connected to the sliders. The sliders are connected to connecting arms 17 vertically arranged with the slide groove 11, and the other end of the connecting arm 17 is connected to a clamping member for clamping the bracket 1 to be removed. The clamping member can be a suction cup, and the suction cup is connected to an air pump through a straw. The adjacent two sliders are connected by a connecting line 16, and a connecting line 16 is provided on one side. An elastic spring is connected to the two adjacent sliders, and a driving motor is provided on one side of the second strip segment. The output end of the driving motor is connected to a take-up shaft 14, and a traction line 15 is wound on the take-up shaft 14. The other end of the traction line 15 is connected to the slider provided closest to the take-up shaft 14. When the driving motor starts and drives the take-up shaft 14 to rotate, the traction line 15 is wound onto the take-up shaft 14 until the slider pulled by the traction line 15 is against the side wall of the second strip segment. At this time, the slider farthest from the take-up shaft 14 is at the connection between the arc segment 12 and the oblique segment 13, and the length of the connecting arm 17 is determined by the slider closest to the take-up shaft 14. The length of the connected connecting arm 17 gradually becomes shorter when it reaches the length of the connecting arm 17 connected to the slider farthest from the take-up shaft 14; when a bracket 1 to be removed that is closest to the shielding bracket 2 is lowered for support, and moves toward the direction of the carrying plate 3, the side wall of the bracket 1 to be removed first contacts the clamping piece connected to the slider farthest from the take-up shaft 14, and the clamping piece clamps the side wall of the bracket 1 to be removed. As the bracket 1 to be removed turns, the clamping pieces connected to other sliders also begin to clamp the side wall of the bracket 1 to be removed. The arc-shaped guide plate 10 facilitates guiding the turning of the bracket 1 to be removed to prevent the bracket 1 to be removed from collision and damage.

[0037] A self-moving hydraulic support withdrawal method includes: supporting the top plate on the shielding support 2 and the support 1 to be withdrawn, supporting the top of the fully mechanized mining working face under the mine, pulling out several ordinary hydraulic supports at the tail of the fully mechanized mining working face as the shielding support 2 of the shielding assembly and arranging it at the tail of the fully mechanized mining working face, the shielding support 2 is perpendicular to the installation direction of the support 1 to be withdrawn, and then the front push front lock 21 of the four shielding supports 2 is connected to the connecting plate 9, and the installation position of the carrying plate 3 is located on the side of the connecting plate 9 away from the support 1 to be withdrawn, the four shielding supports 2 in the shielding assembly are lowered first, and the four shielding supports 2 in the shielding assembly are moved forward to the side of the withdrawal assembly, and the withdrawal member is then moved forward, and the shielding assembly is moved to the appropriate position before being raised. After the shielding assembly lifts and supports the top plate, the support 1 to be removed that is closest to the shielding support 2 is controlled to be lowered for support, and the top of the support 1 to be removed is separated from the top plate. Then, the two connection points on the support 1 to be removed that is closest to the shielding support 2 are respectively connected to the other ends of the two steel ropes 8, and the two traction telescopic rods 6 are started to facilitate the extraction of the support 1 to be removed. After the front end of the support 1 to be removed is moved to the appropriate position, the traction telescopic rod 6 on the rear side of the support 1 to be removed is controlled to continue working, so as to facilitate the adjustment of the support 1 to be removed by ninety degrees, so that the extraction and adjustment of the support 1 to be removed are integrated, and then the support 1 to be removed is withdrawn by traction of the winch.

[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0039] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-moving hydraulic support removal device, which is arranged on a fully mechanized mining working surface under a mine, and is characterized in that: The frame removal device includes a shield assembly arranged on the comprehensive mining working surface, the shield assembly includes a plurality of shield supports arranged side by side, and a withdrawal piece is provided on the front side of the shield assembly; the withdrawal piece includes a connecting plate, and the connecting plate and the shield support are fixedly connected by a front lock connected to the front end of the shield support, and one side of the connecting plate is vertically connected to a carrying plate, and two traction telescopic rods are provided on the carrying plate, and the telescopic ends of the two traction telescopic rods are arranged facing each other, and the telescopic ends of the traction telescopic rods are connected to a wire rope; a frame removal assembly arranged perpendicular to the shield assembly is provided on the other side of the connecting plate, and the frame removal assembly includes a plurality of arranged supports to be removed, and the supports to be removed are provided with two connection points respectively connected to the other ends of the two steel ropes, and the two connection points are respectively arranged on the front and rear sides of the supports to be removed.

2. The self-propelled hydraulic support removal device according to claim 1, characterized in that: The connection point is a hinged ear seat or a locking piece.

3. The self-propelled hydraulic support removal device according to claim 1, characterized in that: One of the connection points is located at the front end of the bracket to be removed, and another connection point is provided on the side of the bracket to be removed facing the shielding bracket and away from the front end of the bracket to be removed.

4. The self-propelled hydraulic support removal device according to claim 1, characterized in that: The two connection points are respectively a first lock buckle and a second lock buckle, the first lock buckle is located at the front end of the bracket to be withdrawn, and the second lock buckle is provided on a side of the bracket to be withdrawn facing the shield bracket and away from the first lock buckle.

5. The self-propelled hydraulic support removal device according to claim 1, characterized in that: Pulleys are respectively provided at both ends of the carrying plate, and the other ends of the two steel ropes are respectively passed around the two pulleys and connected to the two connection points.

6. The self-propelled hydraulic support removal device according to claim 1, characterized in that: A plurality of support members are provided on the mounting plate and the connecting plate. The support members include vertically arranged support telescopic rods, and a support plate is provided on the upper end of the support telescopic rods.

7. The self-propelled hydraulic support removal device according to claim 6, characterized in that: The supporting telescopic rod and the pulling telescopic rod are air cylinders, oil cylinders or electric cylinders.

8. The self-propelled hydraulic support removal device according to claim 6, characterized in that: A plurality of diagonal braces are provided at the lower portion of the supporting telescopic rod.

9. A method for removing a self-propelled hydraulic support according to claim 1, characterized in that: The shielding bracket and the bracket to be removed are supported with a top plate to support the top of the fully mechanized mining working face in the mine. Several ordinary hydraulic supports are pulled out at the tail of the fully mechanized mining working face as shielding brackets of the shielding assembly and arranged at the tail of the fully mechanized mining working face. The shielding bracket is perpendicular to the installation direction of the bracket to be removed. Then the front locking buckle of the four shielding brackets is connected to the connecting plate. The installation position of the carrying plate is on the side of the connecting plate away from the bracket to be removed. The four shielding brackets in the shielding assembly are lowered first, and the four shielding brackets in the shielding assembly are moved forward to the side of the withdrawal assembly. The withdrawal part is then moved forward. After the shielding assembly moves to the appropriate position, it is lifted and supported. The shielding assembly is lifted and supported After the support supports the top plate, the support to be removed that is closest to the shielding support is controlled to be lowered to support it. The top of the support to be removed is separated from the top plate, and then the two connection points on the support to be removed that is closest to the shielding support are respectively connected to the other ends of the two steel ropes, and the two traction telescopic rods are started to facilitate the extraction of the support to be removed. After the front end of the support to be removed is moved to the appropriate position, the traction telescopic rod on the rear side of the support to be removed is controlled to continue working, so as to facilitate the adjustment of the support to be removed by 90 degrees, so that the extraction and adjustment of the support to be removed are completed in one piece, and then the support to be removed is pulled out by a winch.

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