Safety support design board for coal mining

Abstract

The utility model relates to the technical field of coal mining equipment, in particular to a coal mining safety supporting design board which comprises a supporting portal frame assembly. The first supporting assembly is connected with the upper end of the supporting portal frame assembly through a first supporting assembly; the second supporting assembly and the third supporting assembly are installed on the two sides of the supporting portal frame assembly through second supporting assemblies correspondingly; the first supporting adjusting assembly and the second supporting adjusting assembly are installed on the two sides of the supporting portal frame assembly through third supporting assemblies; the supporting end of the first supporting and adjusting assembly and the supporting end of the second supporting and adjusting assembly are located in the supporting gap between the first supporting and adjusting assembly and the supporting gap between the second supporting and adjusting assembly and the supporting gap between the first supporting and adjusting assembly and the third supporting and adjusting assembly respectively.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mining equipment technical field, concretely relates to a coal mining safety support design board. BACKGROUND

[0002] Coal mining refers to the process of mining in the area containing coal, coal is one of natural resources, and most of the coal mines are located below the ground, and the underground coal seam is accessed through the shaft, inclined shaft or adit to carry out mining. This method is suitable for the condition that the coal seam is buried deep, and a complex underground roadway system needs to be built during the mining process to realize the functions of coal transportation, ventilation, drainage and the like.

[0003] Coal mine excavation support is the key link to ensure mine safety and production efficiency, and the roadway is effectively supported by constructing a shed structure such as a steel shed or a wooden shed to prevent surrounding rock collapse and deformation. This supporting method has strong flexibility and adaptability, can quickly respond to roadway deformation, and is especially suitable for areas with complex geological conditions, such as near faults and fracture zones.

[0004] Coal mine advanced support can effectively support the roof of the roadway to prevent roof collapse accidents caused by excessive pressure. During the advancing process of the coal mining face, the roof pressure will gradually increase, and the advanced support can reinforce the roof in advance to reduce the risk of roof collapse and ensure the safe operation of miners in the roadway. At the same time, it is convenient for subsequent construction of concrete support and installation of anchor cables and the like. However, at present, the coal mine advanced support mainly constructs an arc-shaped steel beam according to the diameter of the excavated coal mine, which is difficult to quickly adjust for different diameters of the mine, increasing the complexity of support design and implementation. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a coal mining safety support design board to solve the problem that the coal mine advanced support in the prior art mainly constructs an arc-shaped steel beam according to the diameter of the excavated coal mine, which is difficult to quickly adjust for different diameters of the mine, increasing the complexity of support design and implementation.

[0006] The utility model realizes the following technical scheme:

[0007] A coal mining safety support design board comprises

[0008] A support gantry assembly;

[0009] A first support assembly is connected to the upper end of the support gantry assembly through a first support assembly;

[0010] A second support assembly and a third support assembly are installed on both sides of the support gantry assembly through a second support assembly.

[0011] The first support adjusting assembly and the second support adjusting assembly are installed on both sides of the support gantry assembly through a third support assembly, and the first support adjusting assembly support end and the second support adjusting assembly support end are respectively located at the support gap between the first support assembly and the second support assembly, the first support assembly and the third support assembly.

[0012] Further, the support gantry assembly comprises a first gantry and a second gantry connected through a plurality of support beams, and the first gantry and the second gantry each have a support column on which a lifting assembly is installed.

[0013] Further, the lifting assembly comprises a lifting column, the support column has a lifting cavity, one end of the lifting column is provided in the lifting cavity, a hydraulic jacking device is installed between the lifting column and the support column, and the other end of the lifting column is installed with a walking device.

[0014] Further, the walking device comprises a mounting plate installed at the end of the lifting column, a mounting piece is installed on the lower side of the mounting plate, a walking wheel is installed in the mounting piece, a drive motor is further installed on the side wall of the mounting piece, and the output end of the drive motor is connected with the walking wheel.

[0015] Further, the first support assembly comprises a first support plate in the shape of a circular arc, the first support assembly comprises a first support oil cylinder, one end of the first support oil cylinder is hinged to the support gantry assembly, and the other end of the first support oil cylinder is hinged to the first support plate.

[0016] Further, the second support assembly comprises a second support plate, and the third support assembly comprises a third support plate, the second support plate and the third support plate are both in the shape of a circular arc, and the second support plate and the third support plate are respectively located on both sides of the first support assembly;

[0017] The second support assembly comprises a second support oil cylinder, one end of the second support oil cylinder is hinged to the support gantry assembly, and the other end of the second support oil cylinder is hinged to the second support plate and the third support plate;

[0018] A synchronous adjusting assembly is further installed between the second support plate and the third support plate.

[0019] Further, the synchronous adjusting assembly comprises a first adjusting rod and a second adjusting rod, one end of the first adjusting rod and the second adjusting rod is respectively hinged with the second supporting plate and the third supporting plate, and the other end of the first adjusting rod and the second adjusting rod extends into the supporting gantry assembly, the first adjusting rod and the second adjusting rod are both provided with a strip-shaped slot, and a rotating pin passes through the strip-shaped slot and is connected with the supporting gantry assembly.

[0020] The supporting gantry assembly is provided with an adjusting oil cylinder, and a rotating pin is further arranged at the output end of the adjusting oil cylinder, and the rotating pin is rotationally connected with the end of the first adjusting rod and the second adjusting rod.

[0021] Further, the first supporting adjusting assembly comprises a first adjusting plate, and the second supporting adjusting assembly comprises a second adjusting plate, the first adjusting plate and the second adjusting plate are both arc-shaped, the first adjusting plate is located at the gap between the first supporting plate and the second supporting plate, and the second adjusting plate is located at the gap between the first supporting plate and the third supporting plate.

[0022] The third supporting assembly comprises third supporting oil cylinders, one end of the third supporting oil cylinders is hinged with the supporting gantry assembly, and the other end of the third supporting oil cylinders is hinged with the first adjusting plate or the second adjusting plate.

[0023] Further, the supporting column is further provided with a lifting plate, the lifting plate is provided with a lifting oil cylinder, and the output end of the lifting oil cylinder is vertically downward and connected with a supporting plate.

[0024] The utility model discloses the beneficial effect lies in:

[0025] 1、 through the first supporting assembly adjusting the height of the first support assembly, and the second supporting assembly and the third supporting assembly are adjusted to the support distance apart, so that the support design board can adapt to various different diameters and complex geological conditions of mine, overcome the defect that the existing advanced support mode is difficult to adjust quickly to adapt to different mine diameters, greatly improve the versatility and applicability of the support system, reduce the cost and time of re-design and processing support components due to the change of mine specification;

[0026] 2、 through the third supporting assembly adjusting the position of the first supporting adjusting assembly and the second supporting adjusting assembly, so that the first supporting assembly and the second supporting assembly, the first supporting assembly and the third supporting assembly due to the adaptation of different diameter mine and the gap are blocked by the first supporting adjusting assembly and the second supporting adjusting assembly, avoid the stone of tunnel outer wall falling into the safety support design board;

[0027] 3、The safety support design plate organically integrates the support gantry assembly, the plurality of support assemblies and the support adjusting assembly, etc., to form a complete support system, which not only simplifies the installation and maintenance process of the support system, but also reduces the connection links between the support components, reduces the safety hazards caused by unstable connection, and at the same time, the compact structure layout also enables the support design plate to play a supporting role more efficiently in the limited space of the coal mine, improves the space utilization rate of the mine, and provides more operation space for other operation links of the coal mining. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a specific embodiment of the coal mining safety support design plate structure schematic view of the utility model.

[0029] Figure 2 It is a specific embodiment of the coal mining safety support design plate sectional plane structure schematic view of the utility model.

[0030] Figure 3 It is a specific embodiment of the support gantry assembly structure schematic view of the utility model.

[0031] In the drawings, the component list represented by each reference numeral is as follows:

[0032] 1, support gantry assembly; 2, first support assembly; 3, first support assembly; 4, second support assembly; 5, third support assembly; 6, second support assembly; 7, first support adjusting assembly; 8, second support adjusting assembly; 9, third support assembly; 10, first gantry; 11, second gantry; 12, support beam; 13, support column; 14, lifting column; 15, mounting plate; 16, mounting; 17, traveling wheel; 18, driving motor; 19, first support plate; 20, first support oil cylinder; 21, second support plate; 22, third support plate; 23, second support oil cylinder; 24, first adjusting rod; 25, second adjusting rod; 26, strip-shaped groove; 27, rotating pin; 28, adjusting oil cylinder; 29, first adjusting plate; 30, second adjusting plate; 31, third support oil cylinder; 32, lifting plate; 33, lifting oil cylinder; 34, support plate. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0035] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the above description of the present application, it should be noted that the terms "one side", "the other side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the term "same" and the like do not mean that the components must be absolutely the same, but there can be slight differences. The term "vertical" only means that the positional relationship between the components is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0038] Please refer to Figures 1-3 The present application provides a technical scheme: a coal mining safety support design plate, comprising

[0039] A support gantry assembly 1 is provided.

[0040] A first support assembly 2 is connected to the upper end of the support gantry assembly 1 through a first support assembly 3.

[0041] A second support assembly 4 and a third support assembly 5 are respectively installed on both sides of the support gantry assembly 1 through a second support assembly 6.

[0042] A first support adjustment assembly 7 and a second support adjustment assembly 8 are installed on both sides of the support gantry assembly 1 through a third support assembly 9, and the support end of the first support adjustment assembly 7 and the support end of the second support adjustment assembly 8 are respectively located at the support gap between the first support assembly 2 and the second support assembly 4, and the first support assembly 2 and the third support assembly 5.

[0043] In the scheme, the first supporting assembly 2 is connected with the upper end of the supporting gantry assembly 1 through the first supporting assembly 3, so that the height between the first supporting assembly 2 and the supporting gantry assembly 1 is adjustable, and the first supporting assembly 2 is mainly used for supporting the top of the coal mining well, facilitating subsequent further tunneling, and facilitating installation of the steel framework and subsequent concrete spraying.

[0044] The second supporting assembly 4 and the third supporting assembly 5 are connected with the side wall of the supporting gantry assembly 1 through the second supporting assembly 6, and the second supporting assembly 4 and the third supporting assembly 5 are mainly used for supporting the rock walls on both sides of the coal mining well, avoiding collapse of the rock walls on both sides, and the second supporting assembly 6 is used for adjusting the width between the second supporting assembly 4, the third supporting assembly 5 and the supporting gantry assembly 1, so as to adapt to coal mining wells of different diameters.

[0045] When the diameter of the coal mine well to be supported is large, gaps will appear between the first supporting assembly 2 and the second supporting assembly 4, and between the first supporting assembly 2 and the third supporting assembly 5, and if the gaps are not treated, stones or slag may fall during the subsequent tunneling process, which is not conducive to the subsequent further tunneling. Therefore, the side wall of the supporting gantry assembly 1 is further connected with the first supporting adjusting assembly 7 and the second supporting adjusting assembly 8 through the third supporting assembly 9, the first supporting adjusting assembly 7 is located below the gap formed by the first supporting assembly 2 and the second supporting assembly 4, and the second supporting adjusting assembly 8 is located below the gap formed by the first supporting assembly 2 and the third supporting assembly 5, so that the second supporting assembly 4, the first supporting adjusting assembly 7, the first supporting assembly 2, the second supporting adjusting assembly 8 and the third supporting assembly 5 form an arched supporting structure to support the well, greatly improving the versatility and applicability of the supporting structure, and reducing the cost and time of redesigning and processing the supporting components due to changes in the specifications of the well.

[0046] As shown in Figure 1 , Figure 3 In the embodiment, the supporting gantry assembly 1 includes a first gantry 10 and a second gantry 11, the first gantry 10 and the second gantry 11 are connected through a plurality of supporting beams 12, and the first gantry 10 and the second gantry 11 each have a supporting column 13, and the supporting column 13 is provided with a lifting assembly.

[0047] In the scheme, the first gantry 10 and the second gantry 11 are each welded from thick steel plates, the first gantry 10 and the second gantry 11 are connected through a plurality of supporting beams 12 to form a stable supporting structure. In order to further increase the strength of the supporting gantry assembly 1, the plurality of supporting columns 13 are connected through reinforcing rods.

[0048] In the embodiment, the lifting assembly comprises a lifting column 14, the support column 13 has a lifting cavity, the lifting column 14 is arranged in the lifting cavity, a hydraulic lifting device is arranged between the lifting column 14 and the support column 13, and the other end of the lifting column 14 is provided with a walking device.

[0049] In the embodiment, the lifting column 14 is in a hollow rectangular shape, the support column 13 is also in a rectangular shape, one end of the support column 13 is arranged in the lifting column 14, and the other end of the support column 13 is connected with the walking device, the walking device is used to drive the whole support device to move, and the hydraulic lifting device (not shown in the figure) is arranged in the support column 13 and the lifting column 14.

[0050] When the height is adjusted, the hydraulic lifting device is started to adjust the length of the support column 13 arranged in the lifting column 14, so as to adjust the overall height of the support gantry assembly 1, and after the height is adjusted to a suitable position, the hydraulic lock of the hydraulic lifting device is locked, so that the support gantry assembly 1 is kept at a suitable height.

[0051] As shown in Figure 1 , Figure 2 and Figure 3 , in the embodiment, the walking device comprises a mounting plate 15 arranged at the end of the lifting column 14, the mounting plate 15 is provided with a mounting piece 16 at the lower side, the mounting piece 16 is provided with a walking wheel 17, and the side wall of the mounting piece 16 is further provided with a driving motor 18, and the output end of the driving motor 18 is connected with the walking wheel 17.

[0052] In the embodiment, the mounting plate 15 is provided with the mounting piece 16 at the bottom, the mounting piece 16 is provided with the walking wheel 17, the walking wheel 17 can be a track wheel or a steel load-bearing wheel, the support gantry assembly 1 is provided with four support columns 13, each support column 13 is provided with the walking wheel 17 at the lower side, during the movement, the four driving motors 18 are synchronously controlled to make the support gantry assembly 1 move synchronously, which is convenient for further coal mine tunneling.

[0053] As shown in Figure 1 , Figure 2 and Figure 3As shown, in the embodiment, the first support assembly 2 comprises a first support plate 19, the first support plate 19 is in a circular arc shape, the first support assembly 3 comprises a first support oil cylinder 20, a plurality of first support oil cylinders 20 are hinged at one end to the support gantry assembly 1, and the other end of the first support oil cylinder 20 is hinged to the first support plate 19. The second support assembly 4 comprises a second support plate 21, the third support assembly 5 comprises a third support plate 22, the second support plate 21 and the third support plate 22 are both in a circular arc shape, and the second support plate 21 and the third support plate 22 are respectively located on both sides of the first support assembly 2, the second support assembly 6 comprises a second support oil cylinder 23, a plurality of second support oil cylinders 23 are hinged at one end to the support gantry assembly 1, and the other end of the second support oil cylinder 23 is hinged to the second support plate 21 and the third support plate 22, and a synchronous adjusting assembly is further installed between the second support plate 21 and the third support plate 22.

[0054] In the scheme, the structures of the first support assembly 2, the second support assembly 4 and the third support assembly 5 are similar. Specifically, the first support plate 19, the second support plate 21 and the third support plate 22 can all be made of thick steel plates, in some embodiments, the support plates are made of double-layer steel plates, and the double-layer steel plates are connected by support plates to increase the overall strength of the support plates. In order to increase the contact force between the support plates and the rock wall, the outer side of the first support plate 19, the second support plate 21 and the third support plate 22 which contacts the rock wall is provided with a protruding claw part. A plurality of first support oil cylinders 20 and a plurality of second support oil cylinders 23 are connected by a hydraulic synchronizer, so that a plurality of first support oil cylinders 20 or a plurality of second support oil cylinders 23 are synchronously extended or retracted. A plurality of first support oil cylinders 20 or a plurality of second support oil cylinders 23 are respectively located on different planes, and the distance between the support plates and the support gantry assembly 1 is adjusted by adjusting the first support oil cylinder 20 or the plurality of second support oil cylinders 23.

[0055] In the embodiment, the synchronous adjusting assembly comprises a first adjusting rod 24 and a second adjusting rod 25, one end of the first adjusting rod 24 and the second adjusting rod 25 is respectively hinged to the second support plate 21 and the third support plate 22, and the other end of the first adjusting rod 24 and the second adjusting rod 25 extends into the support gantry assembly 1, the first adjusting rod 24 and the second adjusting rod 25 both have a strip-shaped slot 26, a rotating pin 27 passes through the strip-shaped slot 26 and is connected with the support gantry assembly 1, an adjusting oil cylinder 28 is installed on the support gantry assembly 1, and a rotating pin is further installed at the output end of the adjusting oil cylinder 28, and the rotating pin is rotatably connected with the end of the first adjusting rod 24 and the second adjusting rod 25.

[0056] In the scheme, the first adjusting rod 24 and the second adjusting rod 25 are both long rectangular, one end of the first adjusting rod 24 and the second adjusting rod 25 are respectively hinged with the second supporting plate 21 and the third supporting plate 22, the other end is hinged with the output end of the adjusting oil cylinder 28, the first adjusting rod 24 and the second adjusting rod 25 have a certain included angle, the rotating pin 27 passes through the strip-shaped slot 26 of the first adjusting rod 24 and the second adjusting rod 25 and is connected with the supporting gantry assembly 1.

[0057] In the adjusting process, when the output end of the adjusting oil cylinder 28 is stretched or retracted, the first adjusting rod 24 and the second adjusting rod 25 are driven to move up and down with the connection of the adjusting oil cylinder 28, so that the rotating pin 27 slides in the strip-shaped slot 26 of the first adjusting rod 24 and the second adjusting rod 25 and the first adjusting rod 24 and the second adjusting rod 25 rotate synchronously around the rotating pin 27, and under the cooperation of the second supporting oil cylinder 23, the second supporting plate 21 and the third supporting plate 22 are close to or away from each other. The second supporting plate 21 is adjusted under the joint action of the first adjusting rod 24, the second supporting oil cylinder 23 and the third supporting plate 22, and the second adjusting rod 25, thereby enhancing the support stability and support strength of the second supporting plate 21 and the third supporting plate 22.

[0058] In the embodiment, the first supporting adjusting assembly 7 includes a first adjusting plate 29, the second supporting adjusting assembly 8 includes a second adjusting plate 30, the first adjusting plate 29 and the second adjusting plate 30 are both arc-shaped, the first adjusting plate 29 is located at the gap between the first supporting plate 19 and the second supporting plate 21, the second adjusting plate 30 is located at the gap between the first supporting plate 19 and the third supporting plate 22, and the third supporting assembly 9 includes a third supporting oil cylinder 31, one end of the plurality of third supporting oil cylinders 31 is hinged with the supporting gantry assembly 1, and the other end is hinged with the first adjusting plate 29 or the second adjusting plate 30.

[0059] In the scheme, the first supporting adjusting assembly 7 and the second supporting adjusting assembly 8 are similar in structure to the second supporting assembly 4 and the third supporting assembly 5, both of which are adjusted by adjusting the third supporting oil cylinder 31 to adjust the position of the first adjusting plate 29 and the second adjusting plate 30, so that the first adjusting plate 29 and the second adjusting plate 30 are respectively located at the lower side of the gap formed by the first supporting plate 19 and the second supporting plate 21, the first supporting plate 19 and the third supporting plate 22, to avoid the falling of stones or slag on the mine wall.

[0060] In the example, the supporting column 13 is also provided with a lifting plate 32, the lifting oil cylinder 33 is installed on the lifting plate 32, and the output end of the lifting oil cylinder 33 is vertically downward and connected with a supporting plate 34.

[0061] In the scheme, in order to avoid the deformation of the walking wheel 17 caused by the excessive weight of the walking wheel 17, the support structure for sharing gravity is installed under each support column 13. Specifically, after the walking wheel 17 moves the support gantry assembly 1 to a suitable position, the lifting cylinder 33 is extended to make the support plate 34 support on the mine ground, and the support plate 34 and the walking wheel 17 jointly bear the support weight, so as to avoid the serious deformation of the walking wheel 17 and reduce the service life of the walking wheel 17.

[0062] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A coal mining safety support design board, characterised in that: Comprising support gantry assembly (1); first support assembly (2), the first support assembly (2) is connected with the upper end of the support gantry assembly (1) through the first support assembly (3); second support assembly (4) and third support assembly (5), the second support assembly (4) and the third support assembly (5) are respectively installed on both sides of the support gantry assembly (1) through the second support assembly (6); first support adjusting assembly (7) and second support adjusting assembly (8), the first support adjusting assembly (7) and the second support adjusting assembly (8) are installed on both sides of the support gantry assembly (1) through the third support assembly (9), and the first support adjusting assembly (7) and the second support adjusting assembly (8) are respectively located in the support gap between the first support assembly (2) and the second support assembly (4), the first support assembly (2) and the third support assembly (5).

2. The coal mining safety support design board according to claim 1, characterized in that: The support gantry assembly (1) comprises a first gantry (10) and a second gantry (11), the first gantry (10) and the second gantry (11) are connected through a plurality of support beams (12), the first gantry (10) and the second gantry (11) are provided with support columns (13), and the support columns (13) are provided with lifting assemblies.

3. The coal mining safety support design board of claim 2, wherein: The lifting assembly comprises a lifting column (14), the support column (13) has a lifting cavity, one end of the lifting column (14) is arranged in the lifting cavity, a hydraulic jacking device is arranged between the lifting column (14) and the support column (13), and the other end of the lifting column (14) is provided with a walking device.

4. The coal mining safety support design board of claim 3, wherein: The walking device comprises a mounting plate (15) mounted on the end of the lifting column (14), a mounting piece (16) is mounted on the lower side of the mounting plate (15), a walking wheel (17) is mounted in the mounting piece (16), a driving motor (18) is further mounted on the side wall of the mounting piece (16), and the output end of the driving motor (18) is connected with the walking wheel (17).

5. The coal mining safety support design board of claim 1, wherein: The first support assembly (2) comprises a first support plate (19), the first support plate (19) is in the shape of a circular arc, the first support assembly (3) comprises a first support oil cylinder (20), a plurality of first support oil cylinders (20) are hingedly connected with the support gantry assembly (1) at one end, and the other end of the first support oil cylinder (20) is hingedly connected with the first support plate (19).

6. The coal mining safety support design board of claim 5, wherein: The second support assembly (4) comprises a second support plate (21), the third support assembly (5) comprises a third support plate (22), the second support plate (21) and the third support plate (22) are in the shape of a circular arc, and the second support plate (21) and the third support plate (22) are respectively located on both sides of the first support assembly (2); The second support assembly (6) comprises a second support oil cylinder (23), a plurality of second support oil cylinders (23) are hingedly connected with the support gantry assembly (1) at one end, and the other end of the second support oil cylinder (23) is hingedly connected with the second support plate (21) and the third support plate (22); A synchronous adjusting assembly is further arranged between the second support plate (21) and the third support plate (22).

7. The coal mining safety support design board of claim 6, wherein: The synchronous adjusting assembly comprises a first adjusting rod (24) and a second adjusting rod (25), one end of the first adjusting rod (24) and the second adjusting rod (25) is respectively hinged with the second support plate (21) and the third support plate (22), and the other end of the first adjusting rod (24) and the second adjusting rod (25) extends into the support gantry assembly (1), the first adjusting rod (24) and the second adjusting rod (25) are both provided with a strip-shaped slot (26), a rotating pin (27) penetrates through the strip-shaped slot (26) and is connected with the support gantry assembly (1); An adjusting oil cylinder (28) is arranged on the support gantry assembly (1), and a rotating pin is further arranged at the output end of the adjusting oil cylinder (28), the rotating pin is rotatably connected with the end of the first adjusting rod (24) and the second adjusting rod (25).

8. The coal mining safety support design board of claim 6, wherein: The first support adjusting assembly (7) comprises a first adjusting plate (29), the second support adjusting assembly (8) comprises a second adjusting plate (30), the first adjusting plate (29) and the second adjusting plate (30) are both in a circular arc shape, the first adjusting plate (29) is arranged at the gap between the first support plate (19) and the second support plate (21), and the second adjusting plate (30) is arranged at the gap between the first support plate (19) and the third support plate (22). The third support assembly (9) comprises a third support oil cylinder (31), one end of the third support oil cylinder (31) is hinged with the support gantry assembly (1), and the other end of the third support oil cylinder (31) is hinged with the first adjusting plate (29) or the second adjusting plate (30).

9. The coal mining safety support design board of claim 3, wherein: A lifting plate (32) is further arranged on the support column (13), a lifting oil cylinder (33) is arranged on the lifting plate (32), and the output end of the lifting oil cylinder (33) is vertically downward and connected with a support plate (34).

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