Extra-thick loose coal seam roadway supporting device

Abstract

The invention belongs to the technical field of roadway supporting, and particularly relates to an extra-thick loose coal seam roadway supporting device. Comprising a bottom plate, a hydraulic jack, a supporting plate, a supporting plate, a protective shell, a supporting mechanism, a self-locking mechanism and an unlocking mechanism. Through the arrangement of the protective shell, the supporting mechanism, the self-locking mechanism and the unlocking mechanism, the function that the supporting plate is attached to the inclined surface of the top of the roadway in a self-adaptive mode within a certain range is achieved; the situation that a gap is formed and the supporting effect is weakened due to the fact that the supporting plate is difficult to fit the inclined top surface of the roadway is effectively avoided, so that the safety and the stability of the roadway are improved; and through the arrangement of the stabilizing mechanism, the stabilizing function of the supporting device is achieved, and normal use of the stabilizing plate during supporting of roadways with different heights can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel support, and in particular relates to a tunnel support device for an extra-thick loose coal seam. Background Art

[0002] Extra-thick and loose coal seam tunnels refer to tunnels with large coal seam thickness, low coal body strength, developed cracks and easy expansion and deformation when exposed to water. In order to ensure the stability and safety of extra-thick and loose coal seam tunnels during excavation and use, tunnel support devices are usually used to effectively support and reinforce extra-thick and loose coal seam tunnels.

[0003] When some existing tunnel support devices are used, they usually rely on hydraulic jacks to drive the support plates to contact the tunnel top to achieve tunnel support. However, when the shape of the tunnel top is inclined, it is difficult for the support plates to fit the inclined tunnel surface. In this case, gaps are easily formed between the support plates and the tunnel top, resulting in weakened support effects and increased risks of deformation or collapse of the tunnel top, which directly threatens the safety and stability of the tunnel. The gaps are also likely to cause uneven stress distribution on the support plates, accelerating their damage process. Therefore, a tunnel support device for extra-thick loose coal seams is proposed. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and proposes a tunnel support device for extra-thick loose coal seams; the present invention is achieved through the following technical solutions: A supporting device for a roadway in a particularly thick loose coal seam comprises a bottom plate, a hydraulic jack and a support plate, wherein the hydraulic jack is installed between the bottom plate and the support plate; the device also comprises a support plate, a protective shell, a support mechanism, a self-locking mechanism and an unlocking mechanism; the support plate is arranged above the support plate; the protective shell is arranged on the lower surface of the support plate; the support mechanism is arranged between the support plate and the support plate; The supporting mechanism comprises a supporting rod 1, a ball head connector 1, a ball head connector 2, a connecting rod, a ball head connector 3, a supporting rod 2 and a sliding plate; the supporting rod 1 is arranged on the upper surface of the middle part of the supporting plate, and a ball head connector 1 is arranged on the upper end of the supporting rod 1, and the ball head connector 1 is connected to the middle part of the bottom surface of the supporting plate; ball head connectors 2 are symmetrically arranged on both sides of the bottom surface of the supporting plate, the lower part of the ball head connector 2 is connected to a connecting rod, a ball head connector 3 is arranged on the end of the connecting rod away from the ball head connector 2, a supporting rod 2 is arranged on the lower part of the ball head connector 3, the supporting rod 2 is slidably connected to the supporting plate, the bottom of the supporting rod 2 penetrates from the top of the protective shell and is slidably connected to the protective shell, a sliding plate is arranged at the bottom of the supporting rod 2, the sliding plate is located in the protective shell and is slidably connected to the protective shell, the bottom of the sliding plate is connected to a spring 1, and the end of the spring 1 away from the sliding plate is fixedly connected to the protective shell; The self-locking mechanism includes a beveled rack, a self-locking plate and a second spring; the beveled rack is arranged inside the protective shell, the two self-locking plates are slidably connected to the sliding plate, and one end of the self-locking plate is a bevel structure, the bevel structure extends out of the sliding plate and cooperates with the tooth groove of the beveled rack, and the other end of the self-locking plate is connected to the sliding plate with a second spring; The unlocking mechanism includes a slider, a resistance rod, a connecting rod and a slide plate; the slider is slidably connected to the protective shell, and the bottom of the slider is located outside the bottom of the protective shell; a resistance rod is arranged directly below the slider, and the resistance rod is fixedly connected to the bottom plate, and when the slider moves downward, the bottom of the slider contacts the top of the resistance rod; a connecting rod is hinged on the side wall of the slider, and a slide plate is hinged on the end of the connecting rod away from the slider, and the slide plate is slidably connected to the protective shell; a through hole is arranged on the self-locking plate, and the slide plate is inserted into the through hole.

[0005] Furthermore, a plurality of ribs are provided on an outer surface of the support rod, and the plurality of ribs are fixedly connected to the support plate.

[0006] Furthermore, one side of the sliding plate is a cavity structure, and the second spring is connected between the other end of the self-locking plate and the inner wall of the cavity structure.

[0007] Furthermore, a spring three is arranged on the upper surface of the slider, and one end of the spring three away from the slider is fixedly connected to the protective shell.

[0008] Furthermore, the skateboard is a U-shaped plate structure, which includes a top plate, a bottom plate and a vertical plate, and the vertical plate is connected between the bottom plate and the top plate; the connecting rod is hinged to the inner wall of the bottom plate of the skateboard, the middle part of the vertical plate of the skateboard passes through the sliding plate, and the top plate of the skateboard is located below the top of the inner side of the protective shell; the vertical plate of the skateboard is inserted into the through hole on the self-locking plate.

[0009] Furthermore, the sliding block, the abutting rod, the connecting rod and the sliding plate are all made of polypropylene plastic.

[0010] Furthermore, it also includes a stabilizing mechanism, which includes a stabilizing plate, a transmission rod, a transmission block, a support column, a transmission plate and a connecting plate; a stabilizing plate is rotatably connected to each other on both sides of the base plate, the upper surface of the stabilizing plate is symmetrically hinged with a transmission rod, the end of the transmission rod away from the stabilizing plate is hinged with a transmission block, a support column is slidably connected between the two transmission blocks on the same side, the support column is fixedly connected to the base plate, the transmission block is provided with a transmission plate, the transmission plate is an L-shaped structure, a sliding groove is provided throughout the interior of the transmission plate, the bottom of the connecting plate is connected to a sliding block, the connecting plate is slidably connected in the sliding groove through the sliding block, and the top of the connecting plate is fixedly connected to the support plate.

[0011] Furthermore, the stabilizing plate is rotatably connected to the base plate via a hinge.

[0012] The beneficial effects of the present invention compared with the prior art are as follows: 1. The present invention realizes the function of the support plate adaptively fitting the inclined surface of the top of the tunnel within a certain range through the arrangement of a protective shell, a support mechanism, a self-locking mechanism and an unlocking mechanism; when in use, the support plate is supported by the support mechanism, and the related structures in the support mechanism are self-locked by the self-locking mechanism to prevent downward movement, thereby completing the support of the top of the tunnel. After use, the self-locking mechanism can be driven to operate through the operation of the unlocking mechanism to release the self-locking of the related structures in the support mechanism. At this time, the related structures in the support mechanism can be reset to restore the support plate to its initial horizontal state, effectively avoiding the situation where the support plate is difficult to fit the inclined top surface of the tunnel, resulting in the formation of gaps and weakening the support effect, thereby reducing the risk of deformation or collapse of the top of the tunnel, thereby improving the safety and stability of the tunnel, and during the support process, the stress borne by the support plate is uniform, thereby improving the durability of the support plate.

[0013] 2. The present invention realizes the function of stabilizing the support device by setting up a stabilizing mechanism. When in use, the stabilizing mechanism can be unfolded as the support plate moves up, so that the stabilizing plate in the stabilizing mechanism rotates and contacts the roadway ground, increasing the contact area between the device and the roadway ground, and further improving the stability of the device. After use, the stabilizing mechanism can be retracted as the support plate moves down, so that the stabilizing plate in the stabilizing mechanism rotates and returns to its original position, reducing the overall volume of the device, so as to facilitate the transportation of the support device. In this process, the transmission plate of the stabilizing mechanism is set to meet the normal use of the stabilizing plate when supporting roadways of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view of the extra-thick loose coal seam roadway support device of the present invention; Figure 3 for Figure 2 A schematic diagram of the enlarged structure of area A; Figure 4 It is a schematic cross-sectional structural diagram of the protective shell of the present invention; Figure 5 for Figure 4 Schematic diagram of the enlarged structure of area B; Figure 6 for Figure 4 A schematic cross-sectional structural diagram of a sliding plate in FIG. Figure 7 for Figure 6 A schematic diagram of the structure of the self-locking plate; Figure 8 It is a structural schematic diagram of the stabilizing mechanism described in the present invention.

[0015] Description of the numbers in the figure: 1. Base plate; 2. Hydraulic jack; 3. Support plate; 4. Support plate; 5. Protective shell; 6. Support mechanism; 61. Support rod one; 62. Ball connector one; 63. Ball connector two; 64. Connecting rod; 65. Ball connector three; 66. Support rod two; 67. Sliding plate; 68. Spring one; 7. Self-locking mechanism; 71. Bevel rack; 72. Self-locking plate; 73. Spring two; 8. Unlocking mechanism; 81. Sliding block; 82. Resistance rod; 83. Spring three; 84. Connecting rod; 85. Slide plate; 9. Stabilizing mechanism; 91. Stabilizing plate; 92. Transmission rod; 93. Transmission block; 94. Support column; 95. Transmission plate; 96. Connecting plate; 10. Rib plate. DETAILED DESCRIPTION

[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0017] See also Figures 1 to 8 This embodiment provides a tunnel support device for a particularly thick loose coal seam, comprising a bottom plate 1, a hydraulic jack 2 and a support plate 3, wherein the hydraulic jack 2 is installed between the bottom plate 1 and the support plate 3; the tunnel support device also comprises: A support plate 4, the support plate 4 is arranged above the support plate 3; A protective shell 5, which is arranged on the lower surface of the supporting plate 3; A support mechanism 6, the support mechanism 6 is arranged between the support plate 3 and the support plate 4; A self-locking mechanism 7, which is arranged inside the protective shell 5; An unlocking mechanism 8, the unlocking mechanism 8 is slidably disposed on the inner surface of the protective shell 5; The stabilizing mechanism 9 is rotatably disposed on the outer surface of the bottom plate 1 , and the stabilizing mechanism 9 is fixedly connected to the support plate 3 .

[0018] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the support mechanism 6 includes a support rod 1 61, a ball connector 1 62, a ball connector 2 63, a connecting rod 64, a ball connector 3 65, a support rod 2 66 and a sliding plate 67; the support rod 1 61 is arranged on the upper surface of the middle part of the support plate 3, and the upper end of the support rod 1 61 is provided with a ball connector 1 62, and the ball connector 1 62 is connected to the middle part of the bottom surface of the support plate 4; the bottom surface of the support plate 4 is symmetrically provided with ball connectors 2 63, and the lower part of the ball connector 2 63 is connected to a connecting rod 64, and the connecting rod 64 is far A ball head connector three 65 is provided at one end away from the ball head connector two 63, and a support rod two 66 is provided at the lower part of the ball head connector three 65. The support rod two 66 is slidably connected to the support plate 3, and the bottom of the support rod two 66 penetrates from the top of the protective shell 5 and is slidably connected to the protective shell 5. A sliding plate 67 is provided at the bottom of the support rod two 66. The sliding plate 67 is located in the protective shell 5 and is slidably connected to the protective shell 5. A spring one 68 is connected to the bottom of the sliding plate 67, and the end of the spring one 68 away from the sliding plate 67 is fixedly connected to the inner bottom surface of the protective shell 5.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, a plurality of ribs 10 are provided on the outer surface of the support rod 1 61 , and the plurality of ribs 10 are fixedly connected to the support plate 3 , which can increase the rigidity of the support rod 1 61 and improve its stability.

[0020] like Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the self-locking mechanism 7 includes a beveled rack 71, a self-locking plate 72 and a second spring 73; the beveled rack 71 is arranged on the inner surface of the protective shell 5, one side of the sliding plate 67 is a cavity structure, two self-locking plates 72 are slidably connected to the sliding plate 67, and one end of the self-locking plate 72 is a slope structure, the slope structure extends out of the sliding plate 67 and cooperates with the tooth groove of the beveled rack 71, and a second spring 73 is connected between the other end of the self-locking plate 72 and the inner wall of the cavity structure.

[0021] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the unlocking mechanism 8 includes a slider 81 slidably arranged on the inner surface of the protective shell 5, and the bottom of the slider 81 is located outside the bottom of the protective shell 5; a resisting rod 82 is arranged directly below the slider 81, and the bottom of the resisting rod 82 is fixedly connected to the bottom plate 1. When the slider 81 moves downward, the bottom of the slider 81 can contact the top of the resisting rod 82; a spring 83 is arranged on the upper surface of the slider 81, and the end of the spring 83 away from the slider 81 is fixedly connected to the protective shell 5, and the side wall of the slider 81 is hinged A connecting rod 84 is connected, and a slide plate 85 is hinged at one end of the connecting rod 84 away from the slider 81, and the slide plate 85 is slidably connected to the protective shell 5; specifically, the slide plate 85 is a U-shaped plate structure, and the slide plate 85 includes a top plate, a bottom plate and a vertical plate, and the vertical plate is connected between the bottom plate and the top plate; the connecting rod 84 is hinged to the inner wall of the bottom plate of the slide plate 85, and the middle part of the vertical plate of the slide plate 85 passes through the sliding plate 67, and the top plate of the slide plate 85 is located below the top of the inner side of the protective shell 5; a through hole is provided in the middle of the self-locking plate 72, and the vertical plate is passed through the through hole.

[0022] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the slider 81, the abutment rod 82, the connecting rod 84 and the slide plate 85 are made of polypropylene plastic, which has the characteristics of high hardness, light weight and corrosion resistance.

[0023] like Figure 1 , Figure 2 and Figure 8 As shown, the stabilizing mechanism 9 includes a stabilizing plate 91, a transmission rod 92, a transmission block 93, a support column 94, a transmission plate 95 and a connecting plate 96; a stabilizing plate 91 is rotatably connected to each other on both sides of the bottom plate 1, and a transmission rod 92 is hingedly connected to the upper surface of the stabilizing plate 91 symmetrically front and back, and a transmission block 93 is hingedly connected to the end of the transmission rod 92 away from the stabilizing plate 91, and a support column 94 is slidably connected between the inner surfaces of the two transmission blocks 93 on the same side, and the support column 94 is fixedly connected to the bottom plate 1 through a column, and a transmission plate 95 is provided on the outer surface of the transmission block 93, and the transmission plate 95 is an L-shaped structure, and a slide groove is provided throughout the interior of the transmission plate 95, and a sliding block is connected to the bottom of the connecting plate 96, and the connecting plate 96 is slidably connected in the slide groove through the sliding block, and the top of the connecting plate 96 is fixedly connected to the support plate 3. The transmission rod 92, the transmission block 93, the support column 94, the transmission plate 95 and the connecting plate 96 can disperse the stress points of the stabilizing plate 91, enhance the structural rigidity of the stabilizing plate 91, and further improve the stability of the contact between the stabilizing plate 91 and the ground.

[0024] like Figure 1 , Figure 2 and Figure 8 As shown, the stabilizing plate 91 is rotatably connected to the base plate 1 via a hinge, and the hinge has the characteristics of high firmness and small size, thereby being able to reduce the size of the device and ensure structural stability.

[0025] The working principle of the extra-thick loose coal seam roadway support device proposed in this embodiment is: When in use, start the hydraulic jack 2, and the output end of the hydraulic jack 2 extends to drive the support plate 3 to move upward, so that the protective shell 5 and the support plate 4 move upward. When one side corner of the support plate 4 contacts the inclined surface of the top of the tunnel, the ball head connector 2 63, the connecting rod 64, the ball head connector 3 65, the support rod 2 66 and the sliding plate 67 located at the corner are subjected to force. At this time, one of the self-locking plates 72 on the sliding plate 67 located at the corner cooperates with the tooth groove of the bevel rack 71 (the elastic force of the spring 2 73 can make the self-locking plate 72 and the tooth groove of the bevel rack 71 cooperate stably), which can make the sliding plate 67 and the structure thereon self-locking to prevent downward movement. Subsequently, the ball connector 1 62 on the support rod 1 61 will deflect, causing the ball connector 2 63, connecting rod 64, ball connector 3 65, support rod 2 66 and sliding plate 67 at the other side corner of the support plate 4 to move upward. When the support plate 4 is in contact with the inclined surface of the top of the tunnel, one of the self-locking plates 72 on the sliding plate 67 at the other side corner of the support plate 4 cooperates with the tooth groove of the bevel rack 71 (the elastic force of the spring 2 73 can stabilize the tooth groove of the self-locking plate 72 and the bevel rack 71), allowing the sliding plate 67 here and the structure thereon to self-lock and prevent downward movement, thereby completing the support of the top of the tunnel.

[0026] When the support is completed, the hydraulic jack 2 is started, and the output end of the hydraulic jack 2 contracts and drives the support plate 3 to move downward, so that the protective shell 5 and the support plate 4 move downward. When the slider 81 on the protective shell 5 contacts the resistance rod 82 on the bottom plate 1, the slider 81 will move upward. At this time, the spring three 83 is compressed, and the slider 81 moves upward to drive the connecting rod 84 to move, and then the slide plate 85 can be driven to move in the direction of the connecting rod 84. Then the moving slide plate 85 can push the self-locking plate 72 matched with the tooth groove of the bevel rack 71 to move, complete the separation of the self-locking plate 72 and the tooth groove of the bevel rack 71, and release the self-locking state of the sliding plate 67. At this time, the sliding plate 67 and the structure thereon can be reset by the elastic force of the spring one 68, and the support plate 4 can be horizontal at this time; the ball head connector one 62 on the support rod one 61 can also be deflected and reset.

[0027] In the above process, when the output end of the hydraulic jack 2 is extended to drive the support plate 3 to move upward, the connecting plate 96 can be driven to move upward, and then the transmission plate 95 can be driven to move by the upward movement of the connecting plate 96, and then the transmission block 93 can be driven to move, and then the transmission rod 92 can be driven to move by the movement of the transmission block 93, and then the stabilizing plate 91 can be driven to rotate and contact the ground of the lane. When the stabilizing plate 91 rotates and contacts the ground of the lane, the connecting plate 96 continues to move upward. At this time, the point where the connecting plate 96 is connected to the transmission plate 95 is in the vertical slide groove of the transmission plate 95, so the transmission plate 95, the transmission block 93 and the transmission rod 92 will not be displaced. The position change can ensure the stability of the contact between the stabilizing plate 91 and the ground of the tunnel; at this time, the contact area between the device and the ground of the tunnel is increased, thereby improving the stability of the device; when the output end of the hydraulic jack 2 contracts and drives the support plate 3 to move downward, the connecting plate 96 will move downward synchronously with the support plate 3, and when the point where the connecting plate 96 is connected to the transmission plate 95 moves out of the vertical slide groove of the transmission plate 95, it can drive the transmission plate 95 to move in the reverse direction, and then drive the transmission block 93 and the transmission rod 92 to move in the reverse direction, and then the reverse movement can drive the stabilizing plate 91 to rotate and reset, thereby reducing the volume of the device for easy transportation of the device.

[0028] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A tunnel support device for an extra-thick loose coal seam, comprising a base plate (1), a hydraulic jack (2) and a support plate (3), wherein the hydraulic jack (2) is installed between the base plate (1) and the support plate (3); characterized in that: It also comprises a supporting plate (4), a protective shell (5), a supporting mechanism (6), a self-locking mechanism (7) and an unlocking mechanism (8); the supporting plate (4) is arranged above the supporting plate (3); the protective shell (5) is arranged on the lower surface of the supporting plate (3); and the supporting mechanism (6) is arranged between the supporting plate (3) and the supporting plate (4); The support mechanism (6) comprises a support rod 1 (61), a ball head connector 1 (62), a ball head connector 2 (63), a connecting rod (64), a ball head connector 3 (65), a support rod 2 (66) and a sliding plate (67); the support rod 1 (61) is arranged on the upper surface of the middle part of the support plate (3); the upper end of the support rod 1 (61) is provided with a ball head connector 1 (62); the ball head connector 1 (62) is connected to the middle part of the bottom surface of the support plate (4); the ball head connector 2 (63) is symmetrically arranged on both sides of the bottom surface of the support plate (4); the lower part of the ball head connector 2 (63) is connected to the connecting rod (64); the connecting rod (64) A ball head connector 3 (65) is provided at one end away from the ball head connector 2 (63), a support rod 2 (66) is provided at the lower part of the ball head connector 3 (65), the support rod 2 (66) is slidably connected to the support plate (3), the bottom of the support rod 2 (66) penetrates from the top of the protective shell (5) and is slidably connected to the protective shell (5), a sliding plate (67) is provided at the bottom of the support rod 2 (66), the sliding plate (67) is located in the protective shell (5) and is slidably connected to the protective shell (5), the bottom of the sliding plate (67) is connected to a spring 1 (68), and the end of the spring 1 (68) away from the sliding plate (67) is fixedly connected to the protective shell (5); The self-locking mechanism (7) comprises an oblique rack (71), a self-locking plate (72) and a second spring (73); the oblique rack (71) is arranged inside the protective shell (5); the two self-locking plates (72) are slidably connected to the sliding plate (67); one end of the self-locking plate (72) is an inclined surface structure, the inclined surface structure extends out of the sliding plate (67) and cooperates with the tooth groove of the oblique rack (71); the other end of the self-locking plate (72) is connected to the sliding plate (67) with the second spring (73); The unlocking mechanism (8) comprises a slider (81), a resisting rod (82), a connecting rod (84) and a sliding plate (85); the slider (81) is slidably connected to the protective shell (5), and the bottom of the slider (81) is located outside the bottom of the protective shell (5); a resisting rod (82) is provided directly below the slider (81), and the resisting rod (82) is fixedly connected to the bottom plate (1), and when the slider (81) moves downward, the bottom of the slider (81) contacts the top of the resisting rod (82); a connecting rod (84) is hinged on the side wall of the slider (81), and a sliding plate (85) is hinged on one end of the connecting rod (84) away from the slider (81), and the sliding plate (85) is slidably connected to the protective shell (5); a through hole is provided on the self-locking plate (72), and the sliding plate (85) is inserted into the through hole.

2. The extra thick loose coal seam tunnel support device according to claim 1 is characterized in that: A plurality of ribs (10) are provided on the outer surface of the first support rod (61), and the plurality of ribs (10) are all fixedly connected to the support plate (3).

3. The extra thick loose coal seam tunnel support device according to claim 1 is characterized in that: One side of the sliding plate (67) is a cavity structure, and the second spring (73) is connected between the other end of the self-locking plate (72) and the inner wall of the cavity structure.

4. The extra thick loose coal seam tunnel support device according to claim 1 is characterized in that: A spring three (83) is provided on the upper surface of the slider (81), and one end of the spring three (83) away from the slider (81) is fixedly connected to the protective shell (5).

5. The extra thick loose coal seam tunnel support device according to claim 1 is characterized in that: The slide plate (85) is a U-shaped plate structure. The slide plate (85) comprises a top plate, a bottom plate and a vertical plate, wherein the vertical plate is connected between the bottom plate and the top plate. The connecting rod (84) is hinged to the inner wall of the bottom plate of the slide plate (85). The middle part of the vertical plate of the slide plate (85) passes through the sliding plate (67). The top plate of the slide plate (85) is located below the top of the inner side of the protective shell (5). The vertical plate of the slide plate (85) passes through the through hole on the self-locking plate (72).

6. The extra thick loose coal seam tunnel support device according to claim 1, characterized in that: The slide block (81), the abutment rod (82), the connecting rod (84) and the slide plate (85) are all made of polypropylene plastic.

7. The extra thick loose coal seam tunnel support device according to claim 1 is characterized in that: The invention also comprises a stabilizing mechanism (9), which comprises a stabilizing plate (91), a transmission rod (92), a transmission block (93), a support column (94), a transmission plate (95) and a connecting plate (96); a stabilizing plate (91) is rotatably connected to each other on both sides of the bottom plate (1); a transmission rod (92) is symmetrically hinged on the upper surface of the stabilizing plate (91); a transmission block (93) is hinged on one end of the transmission rod (92) away from the stabilizing plate (91); a support column (94) is slidably connected between two transmission blocks (93) on the same side; the support column (94) is fixedly connected to the bottom plate (1); a transmission plate (95) is provided on the transmission block (93); the transmission plate (95) is an L-shaped structure; a sliding groove is provided inside the transmission plate (95) for a full length; a sliding block is connected to the bottom of the connecting plate (96); the connecting plate (96) is slidably connected in the sliding groove through the sliding block; and the top of the connecting plate (96) is fixedly connected to the support plate (3).

8. The extra thick loose coal seam tunnel support device according to claim 7, characterized in that: The stabilizing plate (91) is rotatably connected to the base plate (1) via a hinge.

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