Movable temporary supporting device for coal mine tunneling

Abstract

The movable temporary supporting device for coal mine tunneling comprises two sets of longitudinal rods, the two sets of longitudinal rods comprise two first rods and two second rods, the two first rods and the two second rods are arranged in a staggered mode, first hydraulic cylinders are fixedly installed at the bottoms of the two ends of the two first rods, and second hydraulic cylinders are fixedly installed at the bottoms of the two ends of the two second rods. The bottoms of the two ends of the two second rods are fixedly connected with second hydraulic cylinders. The two transverse pushing hydraulic cylinders are started to stretch to push one second rod to move leftwards so as to drive the two inner transverse rods to move rightwards as well and drive the other second rod to move horizontally, so that the four second hydraulic cylinders move horizontally along with the two transverse pushing hydraulic cylinders, then the second hydraulic cylinders are started to recover supporting, and therefore movement is achieved. Therefore, the device has the advantages that automatic operation of moving and adjusting of the device is achieved, operation is convenient and smooth, and the supporting effect on the top can be kept while moving.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine tunneling support, and more specifically, to a mobile temporary support device for coal mine tunneling. Background Technique

[0002] The temporary support of coal mine roadways is an effective means to prevent roof deformation and caving. At present, there are many kinds of temporary support methods, but there are various problems, and their on-site applications are not very ideal, resulting in a series of problems such as frequent safety accidents, time-consuming and laborious work, serious interference, slow tunneling speed, and low efficiency.

[0003] Currently, the general temporary support devices are generally provided with a support bottom plate or a chassis at the bottom. Therefore, when the position needs to be moved, disassembly and movement are required. When disassembling and moving, not only the support for the roadway will be lost, but also the operation efficiency is low, affecting the tunneling efficiency. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a mobile temporary support device for coal mine tunneling to solve the problems in the background technique.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions.

[0006] A mobile temporary support device for coal mine tunneling includes two groups of longitudinal rods. The two groups of longitudinal rods include two first rods and two second rods. The two first rods and the second rods are arranged alternately. At the bottom of both ends of the two first rods, first hydraulic cylinders are fixedly installed. At the bottom of both ends of the two second rods, second hydraulic cylinders are fixedly connected. At the top between the two first rods, two outer crossbars are fixedly connected. At the top between the two second rods, an inner crossbar parallel to the outer crossbars is fixed. Between two adjacent first rods and second rods in the middle, two parallel transverse push hydraulic cylinders are hinged.

[0007] As a further description of the above technical solution: A extension plate is fixedly connected to the left end between the two outer crossbars, and a turnover baffle mechanism is installed at the bottom of the extension plate.

[0008] As a further description of the above technical solution: The turnover baffle mechanism includes a fixed block, an inclined hydraulic cylinder, and a mesh plate. The top of the fixed block is fixedly connected to the bottom of the two outer crossbars. One end of the inclined hydraulic cylinder is hinged to the fixed block, and the other end of the inclined hydraulic cylinder is hinged to the mesh plate. One side of the extension plate is fixedly connected to the two outer crossbars, and the left side of the mesh plate is hinged to the left side of the bottom of the extension plate.

[0009] As a further description of the above technical solution: the bottom of the fixed block is fixedly connected to two first side hydraulic cylinders arranged opposite to each other, and the opposite ends of the two first side hydraulic cylinders are fixedly connected to a first conical head.

[0010] As a further description of the above technical solution: the tops of the outer cross bar and the inner cross bar are fixedly connected with contact blocks.

[0011] As a further description of the above technical solution: the right side of the second rod located on the right side is fixedly connected to two second side hydraulic cylinders arranged opposite to each other, and the opposite ends of the two second side hydraulic cylinders are fixedly connected to the second conical heads.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] This solution achieves movement through the flexible combination of the first rod and the second rod in conjunction with the outer cross bar and the inner cross bar, and the first hydraulic cylinder and the second hydraulic cylinder and the horizontal push hydraulic cylinder, thereby realizing automated movement and adjustment of the device, with the advantage of convenient and smooth operation, and the ability to maintain support for the top while moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a front view structural schematic diagram of the utility model;

[0016] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0017] Figure 4 It is a schematic diagram of the top structure of the utility model.

[0018] Description of the numbers in the figure:

[0019] 1. Longitudinal rod; 2. First rod; 3. Second rod; 4. First hydraulic cylinder; 5. Second hydraulic cylinder; 6. Outer cross rod; 61. Extension plate; 7. Inner cross rod; 8. Transverse push hydraulic cylinder; 9. Flipping mechanism; 91. Fixed block; 911. First side hydraulic cylinder; 912. First conical head; 92. Oblique hydraulic cylinder; 93. Net plate; 10. Contact block; 11. Second side hydraulic cylinder; 12. Second conical head. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figures 1 to 4, in the present utility model, a mobile temporary support device for coal mine tunneling includes two groups of longitudinal rods 1. The two groups of longitudinal rods 1 include two first rods 2 and two second rods 3. The two first rods 2 and the second rods 3 are arranged alternately. At the bottom of both ends of the two first rods 2, first hydraulic cylinders 4 are fixedly installed. At the bottom of both ends of the two second rods 3, second hydraulic cylinders 5 are fixedly connected. At the top between the two first rods 2, two outer crossbars 6 are fixedly connected. At the top between the two second rods 3, an inner crossbar 7 parallel to the outer crossbar 6 is fixed. Between two adjacent first rods 2 and second rods 3 in the middle, two parallel horizontal push hydraulic cylinders 8 are hinged.

[0022] In the present utility model, the top support is formed by the two first rods 2, the second rods 3, the two outer crossbars 6 and the inner crossbar 7. During use, the two first rods 2 and the second rods 3 at the top are supported by the four first hydraulic cylinders 4 and the four second hydraulic cylinders 5. The two first rods 2 and the second rods 3 support the two outer crossbars 6 and the inner crossbar 7. The tops of the two outer crossbars 6 and the inner crossbar 7 contact the top of the mine roadway to achieve temporary support. When the device needs to move forward, first, the four first hydraulic cylinders 4 are started to contract so that their bottoms leave the ground. At this time, the four second hydraulic cylinders 5 maintain support. Then, the two horizontal push hydraulic cylinders 8 are started to contract to drive the first rod 2 to move leftward, and at the same time drive the two outer crossbars 7 to move, drive the other first rod 2 to move synchronously, drive the four first hydraulic cylinders 4 at the bottom to move leftward. Then, the four first hydraulic cylinders 4 are started to extend to restore support. Then, the four second hydraulic cylinders 5 are started to contract to separate from the ground. Then, the two horizontal push hydraulic cylinders 8 are started to extend to push a second rod 3 to move leftward, drive the two inner crossbars 6 to move rightward as well and drive the other second rod 3 to translate, so that the four second hydraulic cylinders 5 follow the translation. Then, the second hydraulic cylinders 5 are started to restore support, thus realizing the movement. Therefore, the advantages of automatic operation of the device movement adjustment are achieved, the operation is convenient and smooth, and the support effect on the top can be maintained while moving. It solves the problems in the prior art that generally support bottom plates or chassis are provided at the bottom. Therefore, when the position needs to be moved, disassembly and movement are required. When disassembling and moving, not only the support for the mine roadway is lost, but also the operation efficiency is low, affecting the tunneling efficiency.

[0023] Please refer to Figure 3 , wherein: at the left end between the two outer crossbars 6, an extension plate 61 is fixedly connected. At the bottom of the extension plate 61, a turning and blocking mechanism 9 is installed.

[0024] In the present utility model, through the turning and blocking mechanism 9 at the bottom of the extension plate 61, after the device is moved, the turning and blocking mechanism 9 can be unfolded forward to block the crushed stones generated during the tunneling in the tunneling direction of the mine roadway.

[0025] Please refer to Figure 3, wherein: the turning and blocking mechanism 9 includes a fixed block 91, an inclined hydraulic cylinder 92 and a wire mesh plate 93. The top of the fixed block 91 is fixedly connected to the bottoms of the two outer cross bars 6. One end of the inclined hydraulic cylinder 92 is hinged to the fixed block 91, and the other end of the inclined hydraulic cylinder 92 is hinged to the wire mesh plate 93. One side of the extension plate 61 is fixedly connected to the two outer cross bars 6, and the left side of the wire mesh plate 93 is hinged to the left side of the bottom of the extension plate 61.

[0026] In the present utility model, by starting the inclined hydraulic cylinder 92 to push the wire mesh plate 93 with the fixed block 91 as a support to achieve unfolding, the crushing stones can be blocked, and it can be flexibly folded, which is convenient for the device to move.

[0027] Please refer to Figure 3 , wherein: two first side hydraulic cylinders 911 arranged back to back are fixedly connected to the bottom of the fixed block 91, and first conical heads 912 are fixedly connected to the back ends of the two first side hydraulic cylinders 911.

[0028] In the present utility model, the first side hydraulic cylinder 911 drives the first conical head 912 to extend laterally to contact and clamp with the side wall of the mine tunnel, so that the support effect is more stable when the device is stationary.

[0029] Please refer to Figure 1 and Figure 2 , wherein: contact blocks 10 are fixedly connected to the tops of the outer cross bar 6 and the inner cross bar 7.

[0030] In the present utility model, the contact blocks 10 enable the tops of the outer cross bar 6 and the inner cross bar 7 to achieve multi-point support for the top of the mine tunnel, and the support effect is better.

[0031] Please refer to Figure 3 and Figure 4 , wherein: two second side hydraulic cylinders 11 arranged back to back are fixedly connected to the right side of the second rod 3 on the right side, and second conical heads 12 are fixedly connected to the back ends of the two second side hydraulic cylinders 11.

[0032] In the present utility model, the second side hydraulic cylinder 11 drives the second conical head 12 to horizontally extend to contact the side wall of the mine tunnel, and cooperate with the two first side hydraulic cylinders 911 and the first conical heads 912 to achieve a better fixing effect for the entire support structure of the device and better support stability.

[0033] The above is only the preferred specific embodiment of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improvement concept, makes equivalent substitution or change, and should be covered by the protection scope of the present utility model.

Claims

1. A mobile temporary support device for coal mine tunneling, comprising two groups of longitudinal rods (1), characterized in that: The two sets of the longitudinal rods (1) include two first rods (2) and two second rods (3). The two first rods (2) and the second rods (3) are arranged alternately. At the bottom of both ends of the two first rods (2), first hydraulic cylinders (4) are fixedly installed. At the bottom of both ends of the two second rods (3), second hydraulic cylinders (5) are fixedly connected. At the top between the two first rods (2), two outer cross rods (6) are fixedly connected. At the top between the two second rods (3), an inner cross rod (7) parallel to the outer cross rods (6) is fixed. Between two adjacent first rods (2) and second rods (3) in the middle, two parallel transverse push hydraulic cylinders (8) are hinged.

2. The mobile temporary support device for coal mine tunneling according to claim 1, characterized in that: At the left end between the two outer cross rods (6), an extension plate (61) is fixedly connected. At the bottom of the extension plate (61), a turning and blocking mechanism (9) is installed.

3. The mobile temporary support device for coal mine tunneling according to claim 2, characterized in that: The turning and blocking mechanism (9) includes a fixed block (91), an inclined hydraulic cylinder (92) and a mesh plate (93). The top of the fixed block (91) is fixedly connected to the bottom of the two outer cross rods (6). One end of the inclined hydraulic cylinder (92) is hinged to the fixed block (91), and the other end of the inclined hydraulic cylinder (92) is hinged to the mesh plate (93). One side of the extension plate (61) is fixedly connected to the two outer cross rods (6). The left side of the mesh plate (93) is hinged to the left side of the bottom of the extension plate (61).

4. The mobile temporary support device for coal mine tunneling according to claim 3, characterized in that: At the bottom of the fixed block (91), two first side hydraulic cylinders (911) arranged in opposite directions are fixedly connected. At the opposite ends of the two first side hydraulic cylinders (911), first conical heads (912) are fixedly connected.

5. A mobile temporary support device for coal mine tunneling according to claim 1, characterized in that: At the top of both the outer cross rods (6) and the inner cross rod (7), contact blocks (10) are fixedly connected.

6. The mobile temporary support device for coal mine tunneling according to claim 1, characterized in that: At the right side of the second rod (3) on the right side, two second side hydraulic cylinders (11) arranged in opposite directions are fixedly connected. At the opposite ends of the two second side hydraulic cylinders (11), second conical heads (12) are fixedly connected.

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