Jack device for roadway roof separation trend control

Abstract

The invention belongs to the technical field of roadway support, and discloses a jack device for roadway roof separation trend control, which comprises a main body cylinder, and further comprises a support steel plate mounted at the top of the main body cylinder; the power assembly is rotationally connected to the interior of the upper end of the supporting steel plate; the top block is movably connected to the upper end of the inner cavity of the supporting steel plate and fixedly arranged on the outer wall of the power assembly in a sleeving mode; through cooperation of a connecting rod, a telescopic top plate and other structures, an inclined plate rotates to gradually abut against a rectangular plate, the rectangular plate drives the connecting rod to move upwards along an inclined groove in a supporting steel plate, and a first tension spring connected with a movable bin pulls the movable bin, a first lifting steel plate and a second lifting steel plate to rotate in the direction away from the telescopic top plate; the arc block abuts against the protruding block to move downwards, the middle area of the top plate can bear the corresponding jacking force, and therefore the probability of occurrence of roadway top plate separation is greatly reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of roadway support, and particularly relates to a jack device for controlling the separation tendency of a roadway roof. BACKGROUND

[0002] The separation tendency of a roadway roof refers to the dynamic change of the separation tendency between different layers of a roadway roof rock layer under the action of various stresses (such as mine pressure, rock layer self weight, etc.), when the separation tendency of the roadway roof rock layer continuously develops, the separation degree between the rock layers gradually increases, and the self-bearing capacity of the roadway roof continuously decreases. Once the pressure on the roadway roof exceeds the ultimate bearing capacity, the roadway roof rock layer will collapse.

[0003] The existing jack device is generally used to upwardly support the positions with greater stress on both sides of the bottom of the roadway roof. However, when facing a horizontal roadway roof, the existing jack device generally only simply supports the two side regions of the bottom surface of the roadway roof. In the long-term use process, the middle region of the roadway roof lacks support, and the separation and subsidence of the roadway roof, and even the collapse of the roadway roof, may occur. Therefore, the jack device needs to be improved. SUMMARY

[0004] To solve the problems in the background, the application provides a jack device for controlling the separation tendency of a roadway roof.

[0005] To achieve the above purpose, the application provides the following technical scheme: a jack device for controlling the separation tendency of a roadway roof, comprising a main body cylinder, and further comprising: a support steel plate, which is installed at the top of the main body cylinder; a power assembly, which is rotationally connected to the inside of the upper end of the support steel plate; a top block, which is movably connected to the upper end of the inner cavity of the support steel plate and fixedly sleeved on the outer wall of the power assembly; a telescopic roof, which is arranged in the inside of the support steel plate; The power assembly comprises a motor rotating rod assembly, and a slope plate is fixedly sleeved on the outer end of the two ends of the support steel plate. The top block comprises an arc-shaped top steel, the inside of the arc-shaped top steel movably connects a moving assembly, the moving assembly comprises an arc block, the two sides of the arc block are abuttingly connected with abutting plates, and the bottom of the arc-shaped top steel is hingedly connected with a roof. The telescopic roof comprises a positioning bin, a protruding block movably connected to the upper end of the inner cavity of the positioning bin, a rubber connecting pipe installed on one side of the lower end of the inner cavity of the positioning bin, an active bin through-connected to the top of the rubber connecting pipe, the active bin rotatably connected to the inner cavity of the supporting steel plate, a first lifting steel plate movably connected to the inner part of the active bin, a second lifting steel plate movably connected to the inner part of the first lifting steel plate, a limiting assembly abuttingly connected to the top of the active bin, and an active assembly for limiting the roof abuttingly connected to the outer side of the limiting assembly.

[0006] Preferably, the motor rotating rod assembly is composed of a motor and a rotating shaft fixedly connected with the motor, the motor is fixedly installed on the supporting steel plate, the output end of the motor is fixedly connected with the rotating shaft, the rotating shaft penetrates through the supporting steel plate and the arc-shaped top steel, and is movably connected with the supporting steel plate and fixedly connected with the inner wall of the arc-shaped top steel. The outer walls of the two ends of the rotating shaft are both fixedly installed with an inclined plate, and one end of the inclined plate away from the motor rotating rod assembly is abuttingly connected with the limiting assembly.

[0007] Preferably, the arc block is elastically connected with the side wall of the arc-shaped top steel through a first tension spring, the abutting plate is in the shape of "Z", and the contact ends of the abutting plate with the arc block and the supporting steel plate are both provided with an inclined angle. The abutting plate is elastically connected with the inner wall of the arc-shaped top steel through a first spring.

[0008] Preferably, the roof is composed of two hingedly connected steel plates, one end of one of the steel plates is hingedly connected with the bottom end of the arc-shaped top steel through a roller shaft, and the other steel plate is hingedly connected to the bottom of one of the steel plates through a roller shaft. Flexible spring sheets are sleeved on the roller shafts of the two steel plates, and the bottom of the roof is abuttingly connected with the active assembly.

[0009] Preferably, the two sides of the protruding block are both installed with a tension spring for resetting the protruding block, and the bottom end of the tension spring is fixedly connected with the top of the positioning bin. The inner cavity regions of the positioning bin, the rubber connecting pipe and the active bin are all filled with hydraulic oil.

[0010] Preferably, a rubber hollow supporting block is installed in the inner cavity of the bending part of the rubber connecting pipe, and the connecting section of the rubber connecting pipe with the positioning bin is designed in a folding manner.

[0011] Preferably, the inner cavities of the two sides of the supporting steel plate are both provided with an inclined slot, the limiting assembly comprises a connecting rod slidingly connected to the inclined slot, the outer wall of one end of the connecting rod located on the inclined slot is fixedly connected with a second spring, and the connecting rod is elastically connected with the supporting steel plate through the second spring. The two ends of the connecting rod are both fixedly connected with a rectangular plate, the top of the rectangular plate is abuttingly connected with the inclined plate, and the bottom end of the connecting rod is abuttingly connected with the top end of the active bin.

[0012] Preferably, the movable assembly comprises a Z-shaped block, which is slidingly connected inside the support steel plate, one end of the Z-shaped block is in abutment with the rectangular plate, and the other end of the Z-shaped block is fixedly connected with an inclined block, and the inclined block is elastically connected with the support steel plate through a third spring.

[0013] Preferably, one end of the inclined block is in abutment with a movable plate, and the movable plate is rotatably connected with the support steel plate through a rotating shaft, and the outer wall of the rotating shaft is sleeved with a first spring sheet connected with the movable plate.

[0014] Preferably, the contact end of the inclined block and the movable plate is provided with an inclined angle.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: The present application is provided with a connecting rod and a telescopic top plate, and the inclined plate is gradually in abutment with the rectangular plate, so that the rectangular plate drives the connecting rod to move upward along the inclined groove on the support steel plate, the first tension spring connected with the movable bin drives the movable bin, the first lifting steel plate and the second lifting steel plate to rotate away from the telescopic top plate, and the hydraulic oil in the positioning bin is introduced into the inside of the movable bin through the rubber connecting pipe, so that the first lifting steel plate and the second lifting steel plate in the movable bin are expanded outward, the top of the second lifting steel plate supports the bottom of the top plate, and when the horizontal roadway top plate is supported, the middle region of the top plate can also be supported, thereby greatly reducing the probability of roadway top plate separation.

[0016] The present application is provided with an arc-shaped top steel and a top plate, and when the top of the roadway is in an arc shape, the two main cylinders are placed on both sides of the inner cavity of the roadway, the support steel plate and the top block are lifted by the piston on the main cylinder, and the top of the arc-shaped top steel supports the arc-shaped top plate in the inner cavity of the roadway, and when the top of the roadway is horizontal, the inclined plate and the arc-shaped top steel are rotated by the motor rotating rod assembly, the top plate is released from the control of the arc-shaped top steel, and the top plate is horizontal, thereby being suitable for supporting the arc-shaped top plate and the horizontal top plate of the roadway, and having strong applicability. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The present application is a structural schematic diagram; Figure 2 The present application is a subdivided structure schematic diagram of the limiting assembly; Figure 3 The present application is a subdivided structure schematic diagram of the power assembly; Figure 4 The present application is a subdivided structure schematic diagram of the telescopic top plate; Figure 5 The present application is aFigure 4 A magnified view of the structure at point A in the middle; Figure 6 This is a schematic diagram showing the structural fit between the movable compartment and the second lifting steel plate of the present invention; Figure 7 for Figure 6 A magnified schematic diagram of the structure at point B in the middle; Figure 8 This is a schematic diagram showing the subdivided structure of the active components of the present invention; Figure 9 This is a schematic diagram showing the structural fit between the arc block and the first spring of the present invention; Figure 10 This is a schematic diagram of the unfolded structure of the present invention; Figure 11 This is a schematic diagram showing the structural fit between the top plate and the arc-shaped top steel of the present invention; Figure 12 This is a schematic diagram showing the structural fit between the inclined plate and the rectangular plate of the present invention.

[0018] In the diagram: 1. Main cylinder; 2. Supporting steel plate; 3. Power assembly; 31. Motor rotating rod assembly; 32. Inclined plate; 4. Top block; 41. Arc-shaped top steel; 42. Moving assembly; 421. Arc block; 422. Contact plate; 423. First spring; 43. Top plate; 5. Telescopic top plate; 51. Positioning chamber; 52. Protrusion; 53. Rubber connecting pipe; 54. Movable chamber; 55. First lifting steel plate; 56. Second lifting steel plate; 6. Limiting assembly; 61. Rectangular plate; 62. Connecting rod; 63. Second spring; 7. Movable assembly; 71. Z-shaped block; 72. Inclined block; 73. Third spring; 74. Rotating shaft; 75. First spring plate; 76. Movable plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 12 As shown, the present invention provides a jack device for controlling the delamination trend of roadway roof, including a main cylinder 1, and further comprising: Supporting steel plate 2 is installed on the top of the main body cylinder 1; Power component 3 is rotatably connected to the interior of the upper end of the support steel plate 2; Top block 4 is movably connected to the upper end of the inner cavity of the support steel plate 2 and fixedly sleeved on the outer wall of the power component 3; The telescopic top plate 5 is arranged inside the support steel plate 2. The power assembly 3 comprises a motor rotating shaft assembly 31, the motor rotating shaft assembly 31 is fixedly sleeved with an inclined plate 32 on the outer end of the two ends of the support steel plate 2; the top block 4 comprises an arc-shaped top steel 41, the arc-shaped top steel 41 is movably connected with a moving assembly 42 inside, the moving assembly 42 comprises an arc block 421, the two sides of the arc block 421 are movably connected with abutting plates 422, the bottom of the arc-shaped top steel 41 is hingedly connected with a top plate 43; The telescopic top plate 5 comprises a positioning bin 51, the upper end of the inner cavity of the positioning bin 51 is movably connected with a protruding block 52, one side of the lower end of the inner cavity of the positioning bin 51 is provided with a rubber connecting pipe 53, the top of the rubber connecting pipe 53 is throughly connected with a movable bin 54, the movable bin 54 is rotatably connected with the inner cavity of the support steel plate 2, the inner cavity of the movable bin 54 is movably connected with a first lifting steel plate 55, the inner cavity of the first lifting steel plate 55 is movably connected with a second lifting steel plate 56, the top of the movable bin 54 is movably connected with a limiting assembly 6, the outer side of the limiting assembly 6 is movably connected with a movable assembly 7 for limiting the top plate 43.

[0021] As shown in Figure 2 , Figure 3 and Figure 9 , the motor rotating shaft assembly 31 is composed of a motor and a rotating shaft fixedly connected with the motor, the motor is fixedly installed on the support steel plate 2, the output end of the motor is fixedly connected with the rotating shaft, the rotating shaft penetrates through the support steel plate 2 and the arc-shaped top steel 41, and is movably connected with the support steel plate 2 and fixedly connected with the inner wall of the arc-shaped top steel 41; The outer wall of the two ends of the rotating shaft is fixedly provided with an inclined plate 32, one end of the inclined plate 32 away from the motor rotating shaft assembly 31 is movably connected with the limiting assembly 6.

[0022] By adopting the above scheme: when the motor rotating shaft assembly 31 operates, the arc-shaped top steel 41 will rotate in the same direction in the inner cavity of the support steel plate 2 through the rotating shaft, at the same time, the inclined plate 32 fixedly connected with the rotating shaft of the motor rotating shaft assembly 31 will gradually abut against the limiting assembly 6 due to the rotation of the rotating shaft, and drive the limiting assembly 6 to move.

[0023] As shown in Figure 9 , the arc block 421 is elastically connected with the arc-shaped top steel 41 through a first tension spring close to the side wall of the arc-shaped top steel 41, the abutting plate 422 is in the shape of "Z", and the contact ends of the abutting plate 422 with the arc block 421 and the support steel plate 2 are both provided with bevels; The abutting plate 422 is elastically connected with the inner wall of the arc-shaped top steel 41 through a first spring 423.

[0024] Adopting the above scheme: when the motor rotating rod assembly 31 drives the arc-shaped top steel 41 to rotate, the arc-shaped top steel 41 drives the arc block 421 and the abutting plate 422 to overturn in the same direction, the contact end of the arc block 421 with the support steel plate 2 will gradually move to the inside of the arc-shaped top steel 41 due to the inclined angle of the abutting plate 422, and at the same time, the inclined angle end of the abutting plate 422 in contact with the arc block 421 will gradually abut against the arc block 421 moving from the inside of the arc-shaped top steel 41 to the outside due to the movement of the abutting plate 422.

[0025] As shown in Figure 10 and Figure 11 , the top plate 43 is composed of two hinged steel plates, one end of one steel plate is hinged to the bottom end of the arc-shaped top steel 41 through a roller shaft, and the other steel plate is hinged to the bottom of one top plate 43 through a roller shaft; The roller shafts of the two steel plates are each sleeved with a flexible spring sheet, and the bottom of the top plate 43 is abuttingly connected with the movable assembly 7.

[0026] Adopting the above scheme: initially, the two steel plates on the top plate 43 are folded together and blocked by the movable assembly 7 at the bottom of the top plate 43, when the limiting assembly 6 drives the movable assembly 7 to move and rotate, and the rotation of the arc-shaped top steel 41 causes the top plate 43 to gradually separate from the movable assembly 7, when the movable assembly 7 removes the block of the top plate 43, the two steel plates on the top plate 43 will gradually unfold outward due to the compressed spring sheet, this process needs manual assistance, the unfolded shape can be referred to Figure 10 .

[0027] As shown in Figure 3 and Figure 9 , the convex block 52 is provided with a tension spring on both sides to reset the convex block 52, and the bottom end of the tension spring is fixedly connected with the top of the positioning bin 51; The inner cavity regions of the positioning bin 51, the rubber connecting pipe 53 and the movable bin 54 are filled with hydraulic oil.

[0028] Adopting the above scheme: when the convex block 52 is subjected to downward pressure and its bottom end moves downward in the inside of the positioning bin 51, the hydraulic oil in the inside of the positioning bin 51 will be extruded and fill the first lifting steel plate 55 and the second lifting steel plate 56 to move upward from the inside of the movable bin 54.

[0029] As shown in Figure 4 and Figure 5 , a rubber hollow support block is installed in the inner cavity of the bending part of the rubber connecting pipe 53, and the connecting section of the rubber connecting pipe 53 and the positioning bin 51 is designed in a folding manner.

[0030] Adopting the above scheme: the limitation of the rubber hollow support block in the inner cavity of the bending part of the rubber connecting pipe 53 avoids the situation that the inner cavity of the rubber connecting pipe 53 is extruded and closed when the rubber connecting pipe 53 is deformed due to the overturning of the movable bin 54.

[0031] As Figure 2 , Figure 4 and Figure 10 indicated, the two sides of the inner cavity of the support steel plate 2 are provided with inclined grooves, the limiting assembly 6 comprises a connecting rod 62 slidably connected to the inclined grooves, one end of the connecting rod 62 located on the inclined grooves is fixedly connected to the outer wall of the second spring 63, and the connecting rod 62 is elastically connected to the support steel plate 2 through the second spring 63. The two ends of the connecting rod 62 are fixedly connected with rectangular plates 61, the top of the rectangular plate 61 abuts against the inclined plate 32, and the bottom end of the connecting rod 62 abuts against the top end of the movable bin 54.

[0032] The above scheme is adopted: when the rectangular plate 61 is pushed, the connecting rod 62 will be moved synchronously, and at this time the connecting rod 62 will remove the obstruction to the top of the movable bin 54.

[0033] As Figure 8 indicated, the movable assembly 7 comprises a Z-shaped block 71 slidably connected to the inside of the support steel plate 2, the Z-shaped block 71 is located at one end of the outer side of the support steel plate 2 and abuts against the rectangular plate 61, one end of the Z-shaped block 71 away from the rectangular plate 61 is fixedly connected with an inclined block 72, and the inclined block 72 is elastically connected to the support steel plate 2 through a third spring 73. One end of the inclined block 72 is in contact with a movable plate 76, the middle end of the movable plate 76 is rotatably connected to the support steel plate 2 through a rotating shaft 74, and the outer wall of the rotating shaft 74 is sleeved with a first spring piece 75 connected with the movable plate 76. The contact end of the inclined block 72 and the movable plate 76 is provided with an inclined angle.

[0034] The above scheme is adopted: when the rectangular plate 61 is pushed, the Z-shaped block 71 and the inclined block 72 will be moved synchronously, at this time the third spring 73 is in a gradually compressed state, the inclined block 72 is driven to abut against the movable plate 76 through the inclined angle end, and the movable plate 76 rotates around the rotating shaft 74, and the movable plate 76 gradually removes the obstruction to the top plate 43 in the rotating process.

[0035] The working principle and use process of the present application are as follows: Firstly, the main cylinder 1 is placed in the roadway, when the top of the roadway is in an arc shape, two main cylinders 1 are placed on the two sides of the inner cavity of the roadway, and the pistons on the main cylinder 1 are used to move the support steel plate 2 and the top block 4 upwards, and the top of the arc-shaped top steel 41 supports and protects the arc-shaped top plate of the inner cavity of the roadway. Secondly, when the roadway top is horizontal, at this time the motor rotating rod assembly 31 drives the inclined plate 32 and the arc-shaped top steel 41 to rotate, when the inclined plate 32 rotates, it will gradually resist the rectangular plate 61, so that the rectangular plate 61 moves to one side, and drives the connecting rod 62 to move upwards along the inclined groove on the support steel plate 2, at the same time, the bottom end of the connecting rod 62 will remove the obstruction to the top end of the movable bin 54, at this time, the second tension spring connected with the movable bin 54 will pull the movable bin 54, the first lifting steel plate 55 and the second lifting steel plate 56 to rotate away from the positioning bin 51; At the same time, the arc-shaped top steel 41 is turned over, the arc block 421 is turned over in the same direction, and the abutting plate 422 is abutted with the support steel plate 2, which continuously abuts the abutting plate 422 to move to one side of the telescopic top plate 5, and makes the inclined corner end of the abutting plate 422 abut the arc block 421 to make the arc block 421 move outwards from the inside of the arc-shaped top steel 41, at this time, the first tension spring for connecting the arc block 421 and the arc-shaped top steel 41 will exert an opposite pulling force on the outward moving arc block 421, so as to make the arc block 421 descend by abutting the convex block 52 while turning over, at this time, the hydraulic oil in the positioning bin 51 will enter the inside of the movable bin 54 through the rubber connecting pipe 53, and by continuously pressing down the convex block 52, the first lifting steel plate 55 and the second lifting steel plate 56 in the movable bin 54 will be unfolded outwardly; Subsequently, when the rectangular plate 61 is pushed, it will synchronously drive the Z-shaped block 71 to move in the same direction, at this time, the inclined block 72 will gradually abut the movable plate 76, so that the movable plate 76 is turned over with the rotating shaft 74 as the axis, at the same time, the end of the movable plate 76 away from the rectangular plate 61 no longer supports and obstructs the bottom of the top plate 43, the top plate 43 gradually unfolds by the respective flexible spring sheets, this process needs to be assisted by the staff on the side, after unfolding, the second lifting steel plate 56 unfolded by the hydraulic oil will support the bottom of the top plate 43, thereby improving the support effect of the horizontal top plate bottom in the roadway, and preventing the roadway roof separation well.

[0036] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or action from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or actions. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0037] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A jacking device for controlling the tendency of a roof to part, comprising a main barrel (1), characterised in that: Also include: Support steel plate (2), the support steel plate (2) is installed at the top of main body cylinder (1); Power assembly (3), the power assembly (3) is rotatably connected in the inside of support steel plate (2) upper end; Top block (4), the top block (4) is movably connected in the upper end of the inner cavity of support steel plate (2) and is fixedly sleeved on the outer wall of power assembly (3); Telescopic roof (5), the telescopic roof (5) is arranged in the inside of support steel plate (2); The power assembly (3) includes motor rotating shaft assembly (31), the motor rotating shaft assembly (31) is fixedly sleeved with inclined plate (32) on the outer end of both ends of support steel plate (2);The top block (4) includes arc top steel (41), the inside of arc top steel (41) movably connected with moving assembly (42), the moving assembly (42) includes arc block (421), the both sides of arc block (421) are all abutted and connected with abutment plate (422), the bottom of arc top steel (41) is hinged with top plate (43); The telescopic roof (5) includes positioning bin (51), the upper end of the inner cavity of positioning bin (51) movably connected with protruding block (52), one side of the lower end of the inner cavity of positioning bin (51) is installed with rubber connecting pipe (53), the top of rubber connecting pipe (53) is connected with movable bin (54), movable bin (54) is rotatably connected with the inner cavity of support steel plate (2), the inside of movable bin (54) movably connected with first lifting steel plate (55), the inside of first lifting steel plate (55) movably connected with second lifting steel plate (56), the top of movable bin (54) is abutted and connected with limiting assembly (6), the outer side of limiting assembly (6) is abutted with movable assembly (7) for limiting top plate (43).

2. The jacking device for controlling the tendency of the roof to part in a mine roadway according to claim 1 characterised in that: The motor rotating shaft assembly (31) is composed of a motor and a rotating shaft fixedly connected with the motor, the motor is fixedly installed on the support steel plate (2), the output end of the motor is fixedly connected with the rotating shaft, the rotating shaft penetrates the support steel plate (2) and the arc top steel (41), and is movably connected with the support steel plate (2) and fixedly connected with the inner wall of the arc top steel (41); The outer wall of both ends of the rotating shaft is fixedly installed with inclined plate (32), one end of inclined plate (32) away from motor rotating shaft assembly (31) is abutted and connected with limiting assembly (6).

3. The jacking device for controlling the rib separation tendency according to claim 1, characterized in that: The side wall of arc block (421) close to arc top steel (41) is elastically connected with arc top steel (41) through first tension spring, the abutment plate (422) is in the shape of "Z", and the contact end of the abutment plate (422) and the arc block (421) and the support steel plate (2) is provided with an inclined angle; The abutment plate (422) is elastically connected with the inner wall of the arc top steel (41) through the first spring (423).

4. The jacking device for controlling the rib separation tendency according to claim 1, characterized in that: The top plate (43) is composed of two hinged steel plates, one end of one of the top plates (43) is hinged to the bottom end of the arc top steel (41) through a roller shaft, and the other top plate (43) is hinged to the bottom of one of the top plates (43) through a roller shaft. The roller shafts of the two steel plates are sleeved with flexible spring sheets, and the bottom of the top plate (43) is connected with the movable assembly (7).

5. The jacking device for controlling the rib separation tendency according to claim 1, characterized in that: The convex block (52) is provided with a pull spring on both sides to reset the convex block (52), and the bottom end of the pull spring is fixedly connected with the top of the positioning bin (51). The positioning bin (51), the rubber connecting pipe (53) and the inner cavity of the movable bin (54) are filled with hydraulic oil.

6. The jacking device for controlling the tendency of the roof to part in a mine roadway according to claim 5 wherein: The inner cavity of the bending part of the rubber connecting pipe (53) is provided with a rubber hollow support block, and the connecting section of the rubber connecting pipe (53) and the positioning bin (51) is designed in a folding manner.

7. The jacking device for controlling the rib separation tendency according to claim 1, characterized in that: The inner cavity of the supporting steel plate (2) is provided with a slanting groove on both sides, the limiting assembly (6) comprises a connecting rod (62) slidingly connected with the slanting groove, one end of the connecting rod (62) is fixedly connected with a second spring (63) on the outer wall of the slanting groove, and the connecting rod (62) is elastically connected with the supporting steel plate (2) through the second spring (63). The both ends of the connecting rod (62) are fixedly connected with a rectangular plate (61), the top of the rectangular plate (61) is abutted with the inclined plate (32), and the bottom end of the connecting rod (62) is abutted with the top end of the movable bin (54).

8. The jacking device for controlling the rib separation tendency according to claim 1, characterized in that: The movable assembly (7) comprises a Z-shaped block (71), the Z-shaped block (71) is slidingly connected in the supporting steel plate (2), the Z-shaped block (71) is abutted with the rectangular plate (61) on one end of the outer side of the supporting steel plate (2), the Z-shaped block (71) is fixedly connected with an inclined block (72) on the end away from the rectangular plate (61), and the inclined block (72) is elastically connected with the supporting steel plate (2) through a third spring (73).

9. A jacking device for controlling the tendency of a roof to part in a mine roadway according to claim 8 characterised in that: One end of the inclined block (72) is abutted with a movable plate (76), the middle end of the movable plate (76) is rotatably connected with the supporting steel plate (2) through a rotating shaft (74), and the outer wall of the rotating shaft (74) is sleeved with a first spring sheet (75) connected with the movable plate (76).

10. A jacking device for controlling the tendency of a roof to part in a mine roadway according to claim 9, characterised in that: The contact end of the inclined block (72) and the movable plate (76) is provided with an inclined angle.

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