Stepping self-moving type bottom-lifting type roadway forepoling

Abstract

The invention provides a stepping self-moving type bottom-lifting type roadway forepoling and relates to the field of supports.The stepping self-moving type bottom-lifting type roadway forepoling comprises a front-end support, a rear-end support and a plurality of middle supports.When the stepping self-moving type bottom-lifting type roadway forepoling is used, the front-end support can be lifted by pushing a jack, and the rear-end support can be lifted by pushing the jack; the middle support and the rear-end support move on the transverse guide rails, and when the middle support and the rear-end support move to proper positions, the pushing jack is put down, so that the front-end support makes contact with the ground. Moving the whole forepoling bracket forwards by utilizing a stepping self-moving advancing jack; the front end support is separated from the ground through stepping and self-moving, the rolling wheels are used for moving, the support moving speed is high, the labor intensity of workers is reduced, and the device can be suitable for soft bottom roadways.

Description

Technical Field

[0001] The present application relates to the field of supports, and in particular to a step-by-step self-moving bottom-lifting tunnel advance support. Background Art

[0002] The bottom plates of several coal seams with good coal seam occurrence conditions are all muddy shale, which is easy to swell when exposed to water. 1. When using conventional self-moving advance support brackets, when the tunnel is under pressure, the bracket base is easy to sink into the bottom plate, making it difficult for the advance bracket to move by itself. 2. When using traditional advance support (single column with hinged top beam): the support strength is not enough. Even when the single column is wearing a column boot, the single column is easy to sink into the bottom plate. The workload of advance support is large, the labor intensity of the staff is high, the support speed is slow, the efficiency is low, and roof collapse accidents often occur. The safety of the working face transportation lane and the return air lane cannot be guaranteed. The accident handling time is long, and the normal mining of the coal mining working face cannot be guaranteed. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a self-moving, bottom-lifting tunnel advance support that can solve the above-mentioned technical problems.

[0004] An embodiment of the present application provides a self-moving, bottom-lifting tunnel advance support, comprising a front end support, a rear end support and a plurality of middle supports, wherein the plurality of middle supports are connected at the tail end, the rear end support is connected to the middle support at the tail end, a push jack is arranged on the middle support at the head end, and the output end of the push jack is connected to the front end support, transverse guide rails are arranged at the lower ends of the rear end support and the middle supports, and movable wheels are arranged between the transverse guide rails.

[0005] Preferably, the front end bracket includes a first moving frame, a first hydraulic lifting mechanism, and a second hydraulic lifting mechanism. First rolling wheels are arranged on both sides of the first moving frame, and the first rolling wheels are installed on the transverse guide rails. The lower end of the first hydraulic lifting mechanism and the lower end of the second hydraulic lifting mechanism are installed in the first moving frame. The upper end of the first hydraulic lifting mechanism and the upper end of the second hydraulic lifting mechanism are provided with a first support beam, and the moving wheels are installed on the lower end of the first moving frame.

[0006] Preferably, the middle support includes a second movable frame, a third hydraulic lifting mechanism, and a fourth hydraulic lifting mechanism. Second rolling wheels are arranged on both sides of the second movable frame, and the second rolling wheels are installed on the transverse guide rails. The lower end of the third hydraulic lifting mechanism and the lower end of the fourth hydraulic lifting mechanism are installed in the second movable frame. The upper end of the third hydraulic lifting mechanism and the upper end of the fourth hydraulic lifting mechanism are provided with a second support beam, and the movable wheels are installed at the lower end of the second movable frame.

[0007] Preferably, the rear end bracket includes a third mobile frame, a fifth hydraulic lifting mechanism, and a sixth hydraulic lifting mechanism. Third rolling wheels are arranged on both sides of the third mobile frame, and the third rolling wheels are installed on the transverse guide rails. The lower end of the fifth hydraulic lifting mechanism and the lower end of the sixth hydraulic lifting mechanism are installed in the third mobile frame. The upper end of the fifth hydraulic lifting mechanism and the upper end of the sixth hydraulic lifting mechanism are provided with a third support beam, and the moving wheels are installed at the lower end of the third mobile frame.

[0008] Preferably, the lower ends of the first support beam, the second support beam and the third support beam are all provided with connecting pieces, and a circular fixing groove is provided in the middle of the connecting piece, and the lifting rod of the first hydraulic lifting mechanism, the lifting rod of the second hydraulic lifting mechanism, the lifting rod of the third hydraulic lifting mechanism, the lifting rod of the fourth hydraulic lifting mechanism, the lifting rod of the fifth hydraulic lifting mechanism and the lifting rod of the sixth hydraulic lifting mechanism are inserted into the circular fixing groove.

[0009] Preferably, a transverse plate is provided at the lower end of the front end bracket, a tilting piece is provided at the front end of the transverse plate, and the tilting piece is arranged in an arc shape.

[0010] Preferably, the first mobile frame, the second mobile frame and the third mobile frame are all arranged in a "T" shape, and both sides of the first mobile frame, both sides of the second mobile frame and both sides of the third mobile frame are provided with clamping parts, and at least two clamping parts are provided on each side.

[0011] Preferably, the first support beam side portion, the second support beam side portion, and the third support beam side portion are all provided with lifting rods, the ends of the lifting rods are provided with connecting flanges, and the connecting flanges are provided with a plurality of fixing threaded holes.

[0012] Preferably, the first hydraulic lifting mechanism, the second hydraulic lifting mechanism, the third hydraulic lifting mechanism, the fourth hydraulic lifting mechanism, the fifth hydraulic lifting mechanism, and the sixth hydraulic lifting mechanism all include a hydraulic cylinder and a lifting rod, and the hydraulic cylinder is used to drive the lifting rod to move up and down.

[0013] Preferably, a lifting and anti-falling mechanism is provided at the lower end of the front end bracket.

[0014] Beneficial effects of the present invention:

[0015] The present invention provides a step-by-step self-moving bottom-lifting tunnel advance support, comprising a front end support, a rear end support and a plurality of middle supports, wherein the plurality of middle supports are connected at the end, the rear end support is connected to the middle support at the tail end, a push jack is arranged on the middle support at the head end, the output end of the push jack is connected to the front end support, the rear end support and the lower end of the middle support are both provided with transverse guide rails, the lower end of the front end support, the lower end of the rear end support and the lower end of the middle support are provided with moving wheels, and the moving wheels are arranged between the transverse guide rails. When the invention is in use, the front end bracket can be lifted by the push jack, and the middle bracket and the rear end bracket can be moved on the transverse guide rail. When they are moved to a suitable position, the push jack is lowered to make the front end bracket contact the ground. The invention utilizes the height adjustment cylinder of the self-moving device to lift the advance support bracket as a whole to a certain height, and utilizes the self-moving push jack to move the advance support bracket as a whole forward; the self-moving movement enables the front end bracket to leave the ground and move by rolling wheels, which has the advantages of fast frame moving speed, reduces the labor intensity of workers, and can be suitable for soft bottom tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

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

[0018] Figure 2 A top view of the present invention;

[0019] Figure 3 It is a side view of the present invention.

[0020] The reference numerals are:

[0021] 1. Front bracket; 2. Rear bracket; 3. Middle bracket; 4. Push jack; 5. Horizontal guide rail; 6. Moving wheel; 7. First moving frame; 8. First hydraulic lifting mechanism; 9. Second hydraulic lifting mechanism; 11. First support beam; 12. Second moving frame; 13. Third hydraulic lifting mechanism; 14. Fourth hydraulic lifting mechanism; 15. Second rolling wheel; 16. Second support beam; 17. Third moving frame; 18. Fifth hydraulic lifting mechanism; 19. Sixth hydraulic lifting mechanism; 20. Third rolling wheel; 21. Third support beam; 22. Connecting piece; 23. Horizontal plate; 24. Lifting piece; 25. Clamping piece; 26. Lifting rod; 27. Connecting flange; 28. Hydraulic cylinder; 29. ​​Telescopic rod; 30. Lifting protection mechanism. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] like Figure 1-3 As shown, a step-by-step self-moving bottom-lifting tunnel advance support comprises a front support 1, a rear support 2 and a plurality of middle supports 3, wherein the plurality of middle supports 3 are connected at the end, the rear support 2 is connected to the middle support 3 at the tail end, a push jack 4 is arranged on the middle support 3 at the head end, and the output end of the push jack 4 is connected to the front support 1, and the lower ends of the rear support 2 and the middle support 3 are both provided with transverse guide rails 5, and the lower ends of the front support 1, the rear support 2 and the middle support 3 are provided with moving wheels 6, and the moving wheels 6 are arranged on the transverse guide rails 5 When the present invention is in use, the front end bracket 1 can be lifted by the push jack 4, and the middle bracket 3 and the rear end bracket 2 can be moved on the transverse guide rail 5. When they are moved to a suitable position, the push jack 4 is lowered to make the front end bracket 1 contact the ground. The present invention uses the height adjustment cylinder of the walking self-moving device to lift the advance support bracket as a whole to a certain height, and uses the walking self-moving push jack 4 to move the advance support bracket as a whole forward; the walking self-moving movement makes the front end bracket 1 leave the ground and move by rolling wheels, which has the advantages of fast frame moving speed, reduces the labor intensity of workers, and can be suitable for soft bottom tunnels.

[0029] like Figure 1-3 As shown, in this embodiment, the front end bracket 1 includes a first moving frame 7, a first hydraulic lifting mechanism 8, and a second hydraulic lifting mechanism 9. The lower end of the first hydraulic lifting mechanism 8 and the lower end of the second hydraulic lifting mechanism 9 are installed in the first moving frame 7, and the upper end of the first hydraulic lifting mechanism 8 and the upper end of the second hydraulic lifting mechanism 9 are provided with a first support beam 11, and the moving wheel 6 is installed at the lower end of the first moving frame 7.

[0030] like Figure 1-3 As shown, in this embodiment, the middle bracket 3 includes a second mobile frame 12, a third hydraulic lifting mechanism 13, and a fourth hydraulic lifting mechanism 14. Second rolling wheels 15 are arranged on both sides of the second mobile frame 12. The second rolling wheels 15 are installed on the transverse guide rail 5. The lower end of the third hydraulic lifting mechanism 13 and the lower end of the fourth hydraulic lifting mechanism 14 are installed in the second mobile frame 12. The upper end of the third hydraulic lifting mechanism 13 and the upper end of the fourth hydraulic lifting mechanism 14 are provided with a second support beam 16, and the moving wheel 6 is installed at the lower end of the second mobile frame 12.

[0031] like Figure 1-3As shown, in this embodiment, the rear end bracket 2 includes a third mobile frame 17, a fifth hydraulic lifting mechanism 18, and a sixth hydraulic lifting mechanism 19. Third rolling wheels 20 are arranged on both sides of the third mobile frame 17, and the third rolling wheels 20 are installed on the transverse guide rail 5. The lower end of the fifth hydraulic lifting mechanism 18 and the lower end of the sixth hydraulic lifting mechanism 19 are installed in the third mobile frame 17. The upper end of the fifth hydraulic lifting mechanism 18 and the upper end of the sixth hydraulic lifting mechanism 19 are provided with a third support beam 21, and the moving wheel 6 is installed at the lower end of the third mobile frame 17.

[0032] like Figure 1-3 As shown, specifically, a driver is provided in each of the first moving frame 7 , the second moving frame 12 , and the third moving frame 17 , and the driver is used to drive the moving wheel 6 so that the moving wheel 6 moves along the transverse guide rail 5 .

[0033] like Figure 1-3 As shown, in this embodiment, a connecting piece 22 is provided at the lower end of the first support beam 11, the lower end of the second support beam 16, and the lower end of the third support beam 21, and a circular fixing groove is provided in the middle of the connecting piece 22, and the lifting rod of the first hydraulic lifting mechanism 8, the lifting rod of the second hydraulic lifting mechanism 9, the lifting rod of the third hydraulic lifting mechanism 13, the lifting rod of the fourth hydraulic lifting mechanism 14, the lifting rod of the fifth hydraulic lifting mechanism 18, and the lifting rod of the sixth hydraulic lifting mechanism 19 are inserted into the circular fixing groove; the first hydraulic lifting mechanism 8 and the second hydraulic lifting mechanism 9 of the present invention simultaneously drive the first support beam 11 to move upward or downward, the third hydraulic lifting mechanism 13 and the fourth hydraulic lifting mechanism 14 simultaneously drive the second support beam 16 to move upward or downward, the fifth hydraulic lifting mechanism 18 and the sixth hydraulic lifting mechanism 19 simultaneously drive the third support beam 21 to move upward or downward, and the connecting piece 22 of the present invention is used to stabilize the first support beam 11, the second support beam 16 or the third support beam 21.

[0034] like Figure 1-3 As shown, in this embodiment, a transverse plate 23 is provided at the lower end of the front end bracket 1, and a tilting piece 24 is provided at the front end of the transverse plate 23. The tilting piece 24 is arranged in an arc shape. The transverse plate 23 of the present invention is used to distribute the pressure of the front end bracket 1 to prevent the front end bracket 1 from sinking deeper, and the front end tilting piece 24 can prevent mud and water in the soft bottom tunnel from entering the transverse plate 23.

[0035] like Figure 1As shown, in this embodiment, the first mobile frame 7, the second mobile frame 12, and the third mobile frame 17 are all arranged in a "T" shape, and both sides of the first mobile frame 7, both sides of the second mobile frame 12, and both sides of the third mobile frame 17 are provided with clamping parts 25, and at least two of the clamping parts 25 are provided on each side. The clamping parts 25 of the present invention are used to limit and fix the first hydraulic lifting mechanism 8, the second hydraulic lifting mechanism 9, the third hydraulic lifting mechanism 13, the fourth hydraulic lifting mechanism 14, the fifth hydraulic lifting mechanism 18 or the sixth hydraulic lifting mechanism 19 to prevent displacement during use.

[0036] like Figure 1-3 As shown, in this embodiment, the side of the first support beam 11, the side of the second support beam 16, and the side of the third support beam 21 are all provided with lifting rods 26, and the end of the lifting rod 26 is provided with a connecting flange 27, and the connecting flange 27 is provided with a plurality of fixing threaded holes. The present invention can fix the adjacent first support beam and the second support beam 16, the two second support beams 16, and the second support beam 16 and the third support beam 21 through the lifting rod, and the fixing can be carried out by bolts, which is convenient for fixing and later disassembly.

[0037] like Figure 1-3 As shown, in this embodiment, the first hydraulic lifting mechanism 8, the second hydraulic lifting mechanism 9, the third hydraulic lifting mechanism 13, the fourth hydraulic lifting mechanism 14, the fifth hydraulic lifting mechanism 18, and the sixth hydraulic lifting mechanism 19 all include a hydraulic cylinder 28 and a lifting rod, and the hydraulic cylinder 28 is used to drive the lifting rod to move up and down.

[0038] like Figure 1 As shown, in this embodiment, in order to prevent the front end bracket 1 from shifting, tilting or falling when being lifted or lowered, a lifting prevention mechanism 30 is provided at the lower end of the front end bracket 1.

[0039] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A self-moving bottom-lifting tunnel advance support, characterized in that: It includes a front-end support, a rear-end support and a plurality of middle supports, wherein the plurality of middle supports are connected at the tail end, the rear-end support is connected to the middle support at the tail end, a push jack is arranged on the middle support at the head end, and the output end of the push jack is connected to the front-end support, the rear-end support and the lower end of the middle support are both provided with transverse guide rails, and the lower end of the front-end support, the lower end of the rear-end support and the lower end of the middle support are provided with moving wheels, and the moving wheels are arranged between the transverse guide rails.

2. The self-propelled bottom-lifting tunnel advance support according to claim 1 is characterized in that: The front end bracket includes a first moving frame, a first hydraulic lifting mechanism, and a second hydraulic lifting mechanism. The lower end of the first hydraulic lifting mechanism and the lower end of the second hydraulic lifting mechanism are installed in the first moving frame. The upper end of the first hydraulic lifting mechanism and the upper end of the second hydraulic lifting mechanism are provided with a first support beam, and the moving wheel is installed at the lower end of the first moving frame.

3. The self-propelled bottom-lifting tunnel advance support according to claim 2 is characterized in that: The middle support includes a second moving frame, a third hydraulic lifting mechanism, and a fourth hydraulic lifting mechanism. Second rolling wheels are arranged on both sides of the second moving frame, and the second rolling wheels are installed on the transverse guide rails. The lower ends of the third hydraulic lifting mechanism and the fourth hydraulic lifting mechanism are installed in the second moving frame. The upper ends of the third hydraulic lifting mechanism and the fourth hydraulic lifting mechanism are provided with second support beams, and the moving wheels are installed at the lower end of the second moving frame.

4. The self-propelled bottom-lifting tunnel advance support according to claim 3 is characterized in that: The rear end bracket includes a third mobile frame, a fifth hydraulic lifting mechanism, and a sixth hydraulic lifting mechanism. Third rolling wheels are arranged on both sides of the third mobile frame, and the third rolling wheels are installed on the transverse guide rails. The lower ends of the fifth hydraulic lifting mechanism and the sixth hydraulic lifting mechanism are installed in the third mobile frame. The upper ends of the fifth hydraulic lifting mechanism and the sixth hydraulic lifting mechanism are provided with third support beams, and the moving wheels are installed at the lower end of the third mobile frame.

5. The self-propelled bottom-lifting tunnel advance support according to claim 4 is characterized in that: The lower ends of the first support beam, the second support beam and the third support beam are all provided with connecting pieces, and a circular fixing groove is provided in the middle of the connecting piece, and the lifting rod of the first hydraulic lifting mechanism, the lifting rod of the second hydraulic lifting mechanism, the lifting rod of the third hydraulic lifting mechanism, the lifting rod of the fourth hydraulic lifting mechanism, the lifting rod of the fifth hydraulic lifting mechanism and the lifting rod of the sixth hydraulic lifting mechanism are inserted into the circular fixing groove.

6. The self-propelled bottom-lifting tunnel advance support according to claim 1 is characterized in that: A transverse plate is arranged at the lower end of the front end bracket, a tilting piece is arranged at the front end of the transverse plate, and the tilting piece is arranged in an arc shape.

7. The self-propelled bottom-lifting tunnel advance support according to claim 3 is characterized in that: The first mobile frame, the second mobile frame and the third mobile frame are all arranged in a "T" shape, and both sides of the first mobile frame, both sides of the second mobile frame and both sides of the third mobile frame are provided with clamping parts, and at least two clamping parts are provided on each side.

8. The self-propelled bottom-lifting tunnel advance support according to claim 3 is characterized by: The first support beam side portion, the second support beam side portion, and the third support beam side portion are all provided with lifting rods, and the ends of the lifting rods are provided with connecting flanges, and the connecting flanges are provided with a plurality of fixing threaded holes.

9. The self-propelled bottom-lifting tunnel advance support according to claim 1 is characterized in that: The first hydraulic lifting mechanism, the second hydraulic lifting mechanism, the third hydraulic lifting mechanism, the fourth hydraulic lifting mechanism, the fifth hydraulic lifting mechanism, and the sixth hydraulic lifting mechanism all include a hydraulic cylinder and a lifting rod, and the hydraulic cylinder is used to drive the lifting rod to move up and down.

10. The self-propelled bottom-lifting tunnel advance support according to claim 1 is characterized in that: The lower end of the front end bracket is provided with a lifting and preventing mechanism.

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