Mining supporting device

Abstract

The mining supporting device comprises a supporting assembly, a supporting assembly and a buffering assembly, the supporting assembly comprises a first supporting piece and a second supporting piece which are spaced in the width direction of a roadway, and the top of the first supporting piece and the top of the second supporting piece are connected through a cross beam; a first vertical plate and a second vertical plate protrude upwards from the two ends of the cross beam respectively, the guide rod is connected between the first vertical plate and the second vertical plate, the first sliding block and the second sliding block are arranged on the guide rod in a sliding and sleeving mode, and the first sliding block and the second sliding block are each provided with a connecting plate which extends upwards and is movably connected with the supporting plate. The first sliding block and the second sliding block are provided with sliding rods penetrating through the vertical plates on the two sides respectively, side supporting plates are arranged at the outer ends of the sliding rods, and elastic pieces are arranged between the sliding blocks and the vertical plates. According to the mining supporting device, the top pressure can be partially converted into horizontal pressure between the side supporting plates and the side wall of the roadway, so that the supporting stability can be improved, and the risks of loosening and shaking of the supporting device are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine equipment, in particular to a mining support device. BACKGROUND

[0002] In the process of underground mining, the support device is an important facility to ensure the safety of personnel in the mine. The existing support device types usually include anchor rod support, sprayed concrete support, metal support, etc. These support devices can meet the support requirements of the mine to some extent, but there are some shortcomings. For example, when the mine causes large pressure between the top wall and the support device due to factors such as rock layer movement, stress concentration or fold fracture, the existing support device is prone to looseness, shaking and other phenomena, and it is difficult to provide stable support effect. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, the embodiment of the present application proposes a mining support device which can convert part of the top pressure into horizontal pressure between the side support plate and the side wall of the roadway, thereby improving the support stability and reducing the risk of looseness and shaking of the support device.

[0005] The mining support device of the embodiment of the present application comprises: a support assembly, the support assembly comprises a first support and a second support which are spaced apart in the width direction of the roadway, and the top of the first support and the second support is connected by a crossbeam, and the two ends of the crossbeam respectively protrude upward with a first vertical plate and a second vertical plate; a support assembly and a buffer assembly, the support assembly comprises a support plate, the buffer assembly comprises a guide rod, a first slider and a second slider, the guide rod is connected between the first vertical plate and the second vertical plate, the first slider and the second slider are spaced apart and slidably sleeved on the guide rod and are adjacent to the first vertical plate and the second vertical plate respectively, the support plate is located above the buffer assembly, and the first slider and the second slider each have a connecting plate extending upward and close to each other, the upper ends of the two connecting plates are each movably connected with the support plate, and the lower ends are each movably connected with the first slider and the second slider, the first slider has a first sliding rod extending toward the first vertical plate and penetrating through the first vertical plate, the outer end of the first sliding rod is connected with a first side support plate, the second slider has a second sliding rod extending toward the second vertical plate and penetrating through the second vertical plate, the outer end of the second sliding rod is connected with a second side support plate, a first elastic member is arranged between the first slider and the first vertical plate, and a second elastic member is arranged between the second slider and the second vertical plate.

[0006] The mining support device of the embodiment of the present application is provided with a buffer assembly between the support assembly and the support plate, when the top pressure is too large to cause the support plate to be pressed down, the first sliding block and the second sliding block slide to the two sides along the guide block and push the first side support plate and the second side support plate to move towards the two sides of the roadway respectively, until the first side support plate and the second side support plate are tightly abutted against the two side walls of the roadway, then the pressure between the support plate and the top wall of the roadway is partially converted into the horizontal pressure between the side support plate and the side wall of the roadway, so that the support stability can be improved, the risk of loosening and shaking of the support device can be reduced, and the operation safety can be improved.

[0007] In some embodiments, the guide rod comprises a first guide rod and a second guide rod arranged at intervals in the length direction of the roadway, and the first sliding rod and the second sliding rod are located between the first guide rod and the second guide rod.

[0008] The middle position of the cross beam is provided with an upwardly protruding vertical plate, and the guide rod passes through the vertical plate.

[0009] In some embodiments, the first sliding rod and the second sliding rod each comprise a fixed section and a telescopic section, one end of the fixed section is connected with the side support plate, the telescopic section is sleeved on the other end of the fixed section, and a third elastic member is arranged between the telescopic section and the side support plate.

[0010] In some embodiments, the first support and the second support each comprise a base, a hydraulic rod and a lifting rod, the hydraulic rod and the lifting rod are both mounted on the base and spaced apart from each other, the top of the hydraulic rod and the top of the lifting rod are both connected with the cross beam, the lifting rod comprises a sleeve part and a support rod, the bottom of the sleeve part is connected with the base and has a plurality of connection holes arranged at intervals in the up-down direction, the support rod is movably fitted in the sleeve part and has a plurality of positioning holes arranged at intervals in the up-down direction, and the connection holes and the positioning holes are passed through by a connecting member to realize the fixation of the sleeve part and the support rod.

[0011] In some embodiments, the cross beam is provided at both ends with an arc-shaped support plate protruding upward and extending in the length direction of the roadway, the arc-shaped support plate is provided with a plurality of first adjusting holes arranged at intervals in the length direction, the top of the support rod is provided with a plurality of second adjusting holes arranged at intervals in the height direction, the first adjusting holes and the second adjusting holes are passed through by a controllable adjusting member to realize the fixation of the arc-shaped support plate and the support rod, and the arc-shaped support plate is connected with the top of the hydraulic rod and can rotate in the vertical plane relative to the hydraulic rod.

[0012] In some embodiments, the arc-shaped support plate has a chute extending in the length direction thereof, and the top of the support rod and the top of the hydraulic rod are both fitted in the chute.

[0013] In some embodiments, the support plate comprises a middle support plate, a front support plate and a rear support plate, the front support plate and the rear support plate are respectively located on both sides of the middle support plate in the length direction of the roadway, the middle support plate is connected with the buffer assembly, and the front support plate and the middle support plate and the rear support plate and the middle support plate are movably connected with the telescopic connecting rod.

[0014] In some embodiments, the telescopic connecting rod is provided with a shielding plate, and the lower surface of the shielding plate is provided with a clamping pipe which is sleeved on the telescopic connecting rod.

[0015] In some embodiments, the middle support plate, the front support plate and the rear support plate all comprise a main plate and a telescopic plate, the main plate is connected with the buffer assembly, and the telescopic plate is telescopic relative to the main plate in the width direction of the roadway. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of a mining support device according to an embodiment of the present application.

[0017] Figure 2 is a sectional view of a mining support device according to an embodiment of the present application.

[0018] Figure 3 is Figure 2 is an enlarged view of part A.

[0019] Figure 4 is a structural schematic view of a buffer assembly of a mining support device according to an embodiment of the present application.

[0020] Figure 5 is a connection schematic view of a telescopic connecting rod and a support plate of a mining support device according to an embodiment of the present application.

[0021] Figure 6 is a structural schematic view of a mining support device according to an embodiment of the present application, wherein the shielding plate is shown.

[0022] Figure 7 is an assembly schematic view of a shielding plate of a mining support device according to an embodiment of the present application.

[0023] Figure 8 is a structural schematic view of a support plate of a mining support device according to an embodiment of the present application.

[0024] REFERENCE SIGNS:

[0025] Support assembly 1, base 11, lifting rod 12, sleeve part 121, support rod 122, connecting hole 123, connecting piece 124, second adjusting hole 125, arc-shaped support plate 13, side plate 131, cross plate 132, sliding groove 133, first adjusting hole 134, hydraulic rod 14, adjusting piece 15, cross beam 16, side support plate 2, middle support plate 3, telescopic connecting rod 4, body section 41, telescopic section 42, buffer assembly 5, first elastic piece 51, second sliding block 52, connecting plate 53, second elastic piece 54, third elastic piece 6, movable section 61, fixed section 62, first side support plate 7, shielding plate 8, clamping pipe 81, guide groove 91, telescopic plate 92, guide rod 93, fourth elastic piece 94. DETAILED DESCRIPTION

[0026] Embodiments of the present application are described in detail below with reference to examples shown in the attached drawings. The embodiments described below with reference to the attached drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0027] As Figures 1-8 shown, the mining support device according to the embodiments of the present application comprises a support assembly 1, a support assembly and a buffer assembly 5.

[0028] Specifically, as Figure 1 and Figure 4 shown, the support assembly 1 comprises first and second support members spaced apart in the width direction of the tunnel, and the top portions of the first and second support members are connected by a cross beam 16, the two ends of the cross beam 16 respectively protrude upwardly with first and second vertical plates, the support assembly comprises a support plate, the buffer assembly 5 comprises a guide rod, a first sliding block and a second sliding block 52, the guide rod is connected between the first and second vertical plates, the first and second sliding blocks 52 are slidably sleeved on the guide rod and are adjacent to the first and second vertical plates respectively, the support plate is located above the buffer assembly 5, and the first and second sliding blocks 52 each have a connecting plate 53 extending upwardly and close to each other, the upper ends of the two connecting plates 53 are movably connected with the support plate, and the lower ends are movably connected with the first and second sliding blocks 52 respectively, the first sliding block has a first sliding rod extending toward the first vertical plate and penetrating through the first vertical plate, the outer end of the first sliding rod is connected with the first side support plate 7, the second sliding block 52 has a second sliding rod extending toward the second vertical plate and penetrating through the second vertical plate, the outer end of the second sliding rod is connected with the second side support plate, the first sliding block and the first vertical plate are provided with a first elastic piece 51, and the second sliding block 52 and the second vertical plate are provided with a second elastic piece 54.

[0029] It can be understood that when there is a large pressure between the supporting plate and the roadway top wall, the pressure feedback will press down the supporting plate, the downward movement of the supporting plate will drive the first slider and the second slider 52 to move along the guide rod to both sides, the movement of the first slider will drive the first sliding rod to move to the side wall of the roadway, and finally drive the first side support plate at the end thereof to move to contact with the side wall of one side of the roadway, at the same time, the movement of the second slider 52 will drive the second sliding rod to move to the other side of the roadway, and finally drive the second side support plate at the end thereof to move to contact with the side wall of the other side of the roadway, then the side support plates on both sides can abut against the two side walls of the roadway, so as to share the top pressure by the horizontal pressure between the side wall of the roadway and the side support plate, and improve the support stability.

[0030] In addition, when the top pressure decreases and the equipment scene application, the first elastic member 51 and the second elastic member 54 can rebound and drive the first slider and the second slider 52 to reset, and the first elastic member 51 and the second elastic member 54 can play a buffering role when the supporting plate is pressed down, avoiding the instantaneous rapid movement of the sliding rod causing the side support plate to collide with the side wall of the roadway, and the compression of the elastic member can also absorb part of the pressure.

[0031] The mining supporting device of the embodiment of the application is provided with the buffer assembly 5 between the support assembly 1 and the supporting plate, when the top pressure is too large to cause the supporting plate to be pressed down, the first slider and the second slider 52 slide along the guide block to both sides and push the first side support plate 7 and the second side support plate to move towards the two sides of the roadway respectively, until the first side support plate 7 and the second side support plate abut against the two side walls of the roadway, then the pressure between the supporting plate and the top wall of the roadway is partially converted into the horizontal pressure between the side support plate and the side wall of the roadway, so as to improve the support stability, reduce the risk of loosening and shaking of the supporting device, and improve the operation safety.

[0032] In some embodiments, as shown in Figure 4 The guide rod includes a first guide rod and a second guide rod arranged at intervals in the length direction of the roadway, and the first sliding rod and the second sliding rod are located between the first guide rod and the second guide rod. In other words, the guide rod is two, which facilitates to improve the stability of the guide and the balance of the support.

[0033] Further, the middle position of the cross beam 16 is provided with a vertical plate protruding upward, and the guide rod passes through the vertical plate. In this way, the vertical plate can provide middle support for the guide rod, further improving the structural stability.

[0034] In some embodiments, the first elastic member 51 and the second elastic member 54 are both springs, and the springs are sleeved on the guide rod. In this way, the guide rod can provide limiting and support for the expansion and contraction of the spring, avoiding the deviation of the spring in the reciprocating process, and improving the reliability of the movement of the sliding rod.

[0035] In some embodiments, as shown in Figure 3As shown, the first sliding rod and the second sliding rod each include a fixed segment 62 and a movable segment 61, one end of the fixed segment 62 is connected with the side support plate, and the movable segment 61 is sleeved on the other end of the fixed segment 62 and a third elastic member 6 is arranged between the movable segment 61 and the side support plate. Thus, when the side support plate contacts the roadway side wall, the third elastic member 6 can be compressed to buffer the collision between the side support plate and the roadway side wall, avoiding the problem of direct and rapid contact between the two, which causes a large vibration.

[0036] Optionally, the third elastic member 6 can be a spring, a hydraulic buffer, etc.

[0037] In some embodiments, as shown in the drawings, Figure 1 As shown, the first support and the second support each include a base 11, a hydraulic rod 14 and a lifting rod 12, the hydraulic rod 14 and the lifting rod 12 are both mounted on the base 11 and spaced apart from each other, and the top of the hydraulic rod 14 and the lifting rod 12 are both connected with the cross beam 16, the lifting rod 12 includes a sleeve part 121 and a support rod 122, the bottom of the sleeve part 121 is connected with the base 11 and has a plurality of connection holes 123 arranged in the up-down direction, the support rod 122 is movably fitted in the sleeve part 121 and has a plurality of positioning holes arranged in the up-down direction, and the connection holes 123 and the positioning holes are passed through by a connecting piece 124 to fix the sleeve part and the support rod 122.

[0038] Specifically, when the hydraulic rod 14 is lifted upward, the connecting piece 124 is first disassembled, that is, at this time the support rod 122 and the sleeve part 121 can relatively freely slide, with the lifting of the cross beam 16 by the top of the hydraulic rod 14, the support rod 122 will be synchronously moved upward, and after the support is in place, the connecting piece 124 is passed through the corresponding positioning hole and the connection hole 123 to fix the sleeve part and the support rod 122, at this time the hydraulic rod 14 and the lifting rod 12 can jointly bear the top load, the support stability is higher, and in addition, the entire support assembly 1 can adjust the support plate at different heights, so that the device can be applied to the support of the roadway at different heights, and the use is more flexible and the application range is wide.

[0039] It should be noted that the surface shape of the roadway top wall will change due to specific working conditions, for example, when the roadway top wall is inclined, the vertical support will not be able to play the best supporting effect, at this time the angle of the support plate needs to be adjusted.

[0040] In view of this problem, the inventors of the present application have made optimization and improvement, specifically, in some embodiments, as shown in the drawings, Figure 1As shown, the cross beam 16 is provided with an arc-shaped support plate 13 protruding upward and extending along the length direction of the roadway at both ends, the arc-shaped support plate 13 is provided with a plurality of first adjusting holes 134 arranged along the length direction at intervals, the top of the support rod 122 is provided with a plurality of second adjusting holes 125 arranged along the height direction at intervals, the first adjusting hole 134 and the second adjusting hole 125 are penetrated by the controllable adjusting member 15 to realize the fixation of the arc-shaped support plate 13 and the support rod 122, and the arc-shaped support plate 13 is connected with the top of the hydraulic rod 14 and can rotate in the vertical plane relative to the hydraulic rod 14. Thus, when the support plate needs to be adjusted, the adjusting member 15 can be first disassembled, then the arc-shaped support plate 13 is rotated in the vertical plane, and after the angle is adjusted to the position (the support plate is attached to the top of the roadway), the adjusting member 15 is penetrated through the corresponding first adjusting hole 134 and the second adjusting hole 125 to realize the fixation of the arc-shaped support plate 13 and the support assembly 1, and since the hydraulic rod 14 is movably connected with the arc-shaped support plate 13, the angle adjustment of the arc-shaped support plate 122 will not be interfered by the hydraulic rod 14.

[0041] In some embodiments, the arc-shaped support plate 13 has a sliding groove 133 extending along the length direction, and the top of the support rod 122 and the hydraulic rod 14 are matched in the sliding groove 133. Figure 1 and Figure 4 As shown, each arc-shaped support plate 13 includes two parallel and spaced apart side plates 131, the two ends of the side plates 131 are connected by a transverse plate 132, and the first adjusting hole 134 is arranged on each side plate 131, after assembly, the top of the support rod 122 and the hydraulic rod 14 are located between the two side plates 131, and the adjusting member 15 has a matching relationship with the first adjusting hole 134 on the two side plates 131, so that the assembly stability and reliability are higher.

[0042] In some embodiments, as shown in Figure 1 and Figure 6 As shown, the support plate includes a middle support plate 3 and two side support plates 2, the two side support plates 2 are respectively located on both sides of the middle support plate 3 in the length direction of the roadway, the middle support plate 3 is connected with the buffer assembly 5, and the telescopic connecting rod is movably connected between the side support plate 2 and the middle support plate 3. Thus, when the support plate is used for supporting in different ranges, the length of the telescopic connecting rod can be adjusted to adjust the support area, the application flexibility is high, and when the middle support plate 3 is pressed downward under a large pressure, the pressure can be shared to the side support plate 2 through the telescopic connecting rod, further improving the stability of the support.

[0043] Specifically, the telescopic connecting section includes a body section 41 and a telescopic section 42, the body section 41 is connected with the middle support plate 3, the telescopic section 42 is connected with the side support plate 2, and the body section 41 and the telescopic section 42 are telescopically connected.

[0044] Optionally, the telescopic connecting rod can also be other adjustable length connecting structure, not limited here.

[0045] In some embodiments, the telescopic connecting rod 4 is provided with a shielding plate 8, and a clamping pipe 81 is arranged on the lower surface of the shielding plate 8 and sleeved on the telescopic connecting rod 4. In this way, the shielding plate 8 can prevent the falling of the mine tunnel roof debris and protect the safety of equipment and personnel.

[0046] In some embodiments, as shown in Figure 8 The intermediate support plate 3 and the side support plate 2 each include a main plate and a telescopic plate 92, the main plate is connected with the buffer assembly 5, and the telescopic plate 92 is telescopic relative to the main plate in the width direction of the tunnel. In this way, when supporting tunnels of different widths, the state of the telescopic plate 92 can be adjusted to meet the corresponding requirements, for example, when the main plate support width is not enough, the telescopic plate 92 can be pulled out to increase the overall width of the support plate.

[0047] Specifically, as shown in Figure 8 The side of the main plate towards the ground is provided with an assembly groove extending in the width direction of the tunnel, the telescopic plate 92 includes a left plate and a right plate, the left plate and the right plate are respectively assembled on both sides of the assembly groove, and when it is necessary to expand the width of the support plate, the left plate and the right plate can be extended out along both ends of the assembly groove.

[0048] Further, as shown in Figure 8 The middle position of the assembly groove is provided with a partition plate, a guide rod 93 is arranged on the partition plate, the side of the left plate towards the guide rod 93 is provided with a left stop block, the side of the right plate towards the guide rod 93 is provided with a right stop block, both ends of the guide rod 93 pass through the left stop block and the right stop block respectively, and both ends of the guide rod 93 are provided with limiting plates, the fourth elastic member 94 is arranged between the left stop block and the partition plate and between the right stop block and the partition plate, when the outer ends of the left plate and the right plate are flush with the main plate, there is a certain interval distance between the limiting plates and the left stop block and the right stop block, and the fourth elastic member 94 is in the original state, when the left plate and the right plate are expanded to stop against the limiting plates, they are not in motion, that is, the limiting plates are used to prevent the telescopic plate 92 from falling off, and when the telescopic plate 92 is telescoped in place, the fourth elastic member 94 will automatically stop against the telescopic plate 92 to ensure that the outer end of the telescopic plate 92 is in the flush position with the outer end of the main plate, facilitating the next operation.

[0049] Further, the bottom wall of the assembly groove is provided with a guide groove 91 extending in the length direction thereof, and the telescopic plate 92 has a clamping edge in sliding cooperation with the guide groove 91.

[0050] In the description of the application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0051] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated thereby. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0054] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising but not limited to, that is, it is open-ended and does not exclude the presence of additional features, structures, materials, or characteristics.

[0055] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present disclosure, and the ordinary skilled person in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A mining support device, characterized in that, include: The support assembly includes a first support member and a second support member spaced apart in the width direction of the tunnel, and the tops of the first support member and the second support member are connected by a crossbeam, and the two ends of the crossbeam have a first vertical plate and a second vertical plate protruding upwards respectively. A support assembly and a buffer assembly are provided. The support assembly includes a support plate, and the buffer assembly includes a guide rod, a first slider, and a second slider. The guide rod is connected between a first vertical plate and a second vertical plate. The first slider and the second slider are slidably sleeved on the guide rod at intervals and are respectively adjacent to the first vertical plate and the second vertical plate. The support plate is located above the buffer assembly, and both the first slider and the second slider have connecting plates that extend upward and are close to each other. The upper ends of the two connecting plates are movably connected to the support plate, and the lower ends are movably connected to the first slider and the second slider, respectively. The first slider has a first sliding rod that extends toward and passes through the first vertical plate, and the outer end of the first sliding rod is connected to a first side support plate. The second slider has a second sliding rod that extends toward and passes through the second vertical plate, and the outer end of the second sliding rod is connected to a second side support plate. A first elastic element is provided between the first slider and the first vertical plate, and a second elastic element is provided between the second slider and the second vertical plate.

2. The mining support device according to claim 1, characterized in that, The guide rod includes a first guide rod and a second guide rod arranged at intervals along the length of the roadway, and the first sliding rod and the second sliding rod are located between the first guide rod and the second guide rod; The crossbeam has an upwardly protruding vertical plate at the middle position, and the guide rod passes through the vertical plate.

3. The mining support device according to claim 1, characterized in that, Both the first elastic element and the second elastic element are springs, and the springs are sleeved on the guide rod.

4. The mining support device according to claim 1, characterized in that, Both the first sliding rod and the second sliding rod include a fixed section and a telescopic section. One end of the fixed section is connected to the side support plate, and the telescopic section is sleeved on the other end of the fixed section. A third elastic element is provided between the telescopic section and the side support plate.

5. The mining support device according to claim 1, characterized in that, Both the first and second support members include a base, a hydraulic rod, and a lifting rod. The hydraulic rod and the lifting rod are both mounted on the base and spaced apart from each other. The tops of the hydraulic rod and the lifting rod are connected to the crossbeam. The lifting rod includes a sleeve portion and a support rod. The bottom of the sleeve portion is connected to the base and has multiple connecting holes spaced apart in the vertical direction. The support rod is movably fitted inside the sleeve portion and has multiple positioning holes spaced apart in the vertical direction. The connecting holes and the positioning holes allow connecting parts to pass through to fix the cylindrical portion to the support rod.

6. The mining support device according to claim 5, characterized in that, Both ends of the crossbeam are provided with arc-shaped support plates that protrude upwards and extend along the length of the tunnel. The arc-shaped support plates are provided with a plurality of first adjustment holes spaced apart along the length direction. The top of the support rod is provided with a plurality of second adjustment holes spaced apart along its height direction. The first adjustment holes and the second adjustment holes are controlled to pass through to fix the arc-shaped support plates and the support rods. The arc-shaped support plates are connected to the top of the hydraulic rods and can rotate relative to the hydraulic rods in the vertical plane.

7. The mining support device according to claim 6, characterized in that, The arc-shaped support plate has a groove extending along its length, and the tops of the support rod and the hydraulic rod are both fitted into the groove.

8. The mining support device according to claim 1, characterized in that, The support plate includes a middle support plate and two side support plates. The two side support plates are located on both sides of the middle support plate along the length of the roadway. The middle support plate is connected to the buffer assembly. A telescopic connecting rod is movably connected between the side support plates and the middle support plate.

9. The mining support device according to claim 8, characterized in that, The telescopic connecting rod is provided with a baffle plate, and a clamping tube is provided on the lower surface of the baffle plate. The clamping tube is sleeved on the telescopic connecting rod.

10. The mining support device according to claim 8, characterized in that, Both the intermediate support plate and the side support plate include a main plate and a telescopic plate. The main plate is connected to the buffer assembly, and the telescopic plate is retractable relative to the main plate in the width direction of the roadway.

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