A roadway support body for coal mine filling mining

Abstract

The present invention discloses a roadway support body for coal mine filling mining, which relates to the technical field of roadway support. It includes a rectangular cross plate. On the front side and the rear side of the top surface of the rectangular cross plate, there are respectively a pair of first L-shaped top plates and a pair of second L-shaped top plates. The first L-shaped top plates and the second L-shaped top plates on the same side are connected to the rectangular cross plate through a translation mechanism. Below the rectangular cross plate, there are a pair of elliptical cross plates. On both sides of the top surface of the elliptical cross plate, there are fixedly arranged a pair of L-shaped foot plates. Between the pair of L-shaped foot plates, there is an articulated side plate, and above the articulated side plate, there is a folding side plate. On both sides of the top surface of the elliptical cross plate, there are fixedly arranged first trapezoidal foot plates, and at the four corners of the bottom surface of the rectangular cross plate, there are fixedly arranged second trapezoidal foot plates. The first trapezoidal foot plates and the second trapezoidal foot plates on the same side are connected through a connecting rod mechanism. The present invention has the advantages of flexible support method, strong adaptability, small floor area, convenient transportation, installation and storage, can ensure the safety of workers and filling mining operations, and can improve the efficiency of filling mining operations.

Description

Technical Field

[0001] The present invention relates to the technical field of roadway support, and particularly to a roadway support body for coal mine filling mining. Background Art

[0002] As mines are mined deeper, filling mining technology has been favored due to its high recovery rate and operation safety. During the filling mining process, in order to ensure the safety and stability of the roadway, it is usually necessary to adopt an appropriate roadway support structure to support the roadway.

[0003] At present, the support effects of some roadway support structures used in coal mines are poor, and there are many drawbacks. For example, insufficient support strength is likely to cause roadway deformation and collapse, threatening the safety of personnel; the support method is single, and it is difficult to adapt to the complex geological conditions in coal mines, with poor adaptability. These drawbacks seriously affect the efficiency and safety of coal mine filling mining. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the prior art, and to propose a roadway support body for coal mine filling mining.

[0005] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0006] A roadway support body for coal mine filling mining includes a rectangular cross plate. A pair of symmetrically distributed first L-shaped roof plates are provided on the front side of the top surface of the rectangular cross plate, and a pair of symmetrically distributed second L-shaped roof plates are provided on the rear side of the top surface of the rectangular cross plate. The first L-shaped roof plates and the second L-shaped roof plates on the same side are connected to the rectangular cross plate through a translation mechanism;

[0007] A pair of horizontally parallel elliptical cross plates are provided directly below the rectangular cross plate. A pair of L-shaped foot plates are fixedly provided on both sides of the top surface of the elliptical cross plate. An articulated side plate is hinged between the pair of L-shaped foot plates, and a folding side plate is hinged above the articulated side plate. The articulated side plate and the folding side plate on the same side are distributed vertically;

[0008] A load-bearing roller is rotatably installed at each end of the bottom surface of each elliptical cross plate. A first trapezoidal foot plate is fixedly provided on both sides of the top surface of each elliptical cross plate, and a second trapezoidal foot plate is fixedly provided at each of the four corners of the bottom surface of the rectangular cross plate. The first trapezoidal foot plate and the second trapezoidal foot plate on the same side are connected through a link mechanism.

[0009] Preferably, the translation mechanism includes a pair of translation plates. A pair of translation plates are provided between the first L-shaped top plate, the second L-shaped top plate and the rectangular cross plate on the same side. A folded-edge connecting plate is fixedly provided on the front side of the top surface of one translation plate, and the top surface of the folded-edge connecting plate is fixedly connected to the bottom surface of the first L-shaped top plate. A plurality of equally spaced fixed sliding rods are slidably inserted into the other translation plate, and the top end of each fixed sliding rod is fixedly connected to the bottom surface of the second L-shaped top plate.

[0010] Preferably, two pairs of symmetrically distributed U-shaped rail tracks are fixedly provided on both sides of the top surface of the rectangular cross plate. A T-shaped sliding plate is slidably engaged in each U-shaped rail track, and the top surface of each T-shaped sliding plate is fixedly connected to the bottom surface of the translation plate on the same side. A pair of staggeredly distributed driven racks are fixedly provided between adjacent pairs of translation plates;

[0011] A pair of servo motors are fixedly provided on both sides of the top surface of the rectangular cross plate. Each servo motor is located between a pair of U-shaped rail tracks on the same side. A concentrically fixed linkage gear is sleeved on the end of the motor shaft of each servo motor, and the linkage gear is meshed with a pair of driven racks on the same side.

[0012] Preferably, two pairs of symmetrically distributed limiting plates are fixedly provided on both sides of the top surface of the rectangular cross plate. Each pair of limiting plates is located outside a pair of U-shaped rail tracks on the same side. A bent pin hole is formed on the top edge of each limiting plate. The rear side edge of the first L-shaped top plate is chamfered, the front side edge of the second L-shaped top plate is chamfered, and a pair of limiting pin shafts are fixedly provided at the front ends of both side walls of the second L-shaped top plate. Each limiting pin shaft is slidably engaged in the bent pin hole on the same side.

[0013] Preferably, a pair of first horizontal shafts penetrating through are fixedly provided on the upper and lower sides of the hinged side plate, and a second horizontal shaft penetrating through is fixedly provided on the bottom side of the folding side plate. The two ends of the first horizontal shaft located below are rotatably inserted into a pair of L-shaped foot plates. A concentrically fixed first gear is sleeved on the right end of the first horizontal shaft located above. A concentrically fixed second gear is sleeved on the right end of the second horizontal shaft. The first gear is meshed with the second gear.

[0014] Preferably, the right ends of the first horizontal shaft located above and the second horizontal shaft are respectively movably hinged to both ends of the same hinged connecting rod. The left ends of the first horizontal shaft located above and the second horizontal shaft are respectively movably hinged to the corner and the bottom end of the same L-shaped connecting rod. An extended connecting rod is movably hinged to the top end of the L-shaped connecting rod. The bottom end of the extended connecting rod is movably hinged to the L-shaped foot plate on the same side.

[0015] Preferably, a driven swing arm is fixedly installed at the left end of the first horizontal axis located below. One side of the bottom surface of the elliptical transverse plate is fixedly provided with an L-shaped bracket. A U-shaped notch is opened at the top end of the L-shaped bracket. A first telescopic cylinder is movably hinged inside the U-shaped notch. The end of the telescopic rod of the first telescopic cylinder is movably hinged to the top end of the driven swing arm.

[0016] Preferably, the link mechanism includes a pair of triangular connecting plates. A pair of triangular connecting plates are arranged between the first trapezoidal foot plate and the second trapezoidal foot plate. A first connecting rod is movably hinged between the bottom ends of the pair of triangular connecting plates. The bottom end of the first connecting rod is movably hinged to the bottom end of the first trapezoidal foot plate. A second connecting rod is movably hinged between the top ends of the pair of triangular connecting plates. The top end of the second connecting rod is movably hinged to the top end of the second trapezoidal foot plate.

[0017] Preferably, a driven connecting shaft is rotatably inserted through the middle parts of the pair of triangular connecting plates. A pair of parallelly distributed fourth connecting rods are fixedly installed at both ends of the driven connecting shaft. The top ends of the pair of fourth connecting rods are respectively movably hinged to the bottom end of the second trapezoidal foot plate. And the second connecting rod is in a parallel state with the pair of fourth connecting rods. A pair of parallelly distributed third connecting rods are hinged at the top end of the first trapezoidal foot plate. The middle upper parts of each of the third connecting rods are movably hinged to the other end of the triangular connecting plate on the same side. And the first connecting rod is in a parallel state with the pair of third connecting rods.

[0018] Preferably, a fixed connecting shaft is rotatably inserted through the middle parts of the pair of fourth connecting rods. A pair of hinged short rods are hinged at both ends of the fixed connecting shaft. The bottom end of each of the hinged short rods is movably hinged to the top end of the third connecting rod on the same side;

[0019] A second telescopic cylinder is movably hinged in the middle of the first trapezoidal foot plate. The end of the telescopic rod of the second telescopic cylinder is movably hinged to the middle of the fixed connecting shaft.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, the first L-shaped top plate and the second L-shaped top plate are initially stacked up and down, occupying little space when not unfolded, and are very suitable for installation and use in coal mine roadways with limited space; at the same time, with the translation mechanism composed of a servo motor, a linkage gear, a driven rack, etc., the overall structure is compact, and each component works together, effectively utilizing space, reducing the complexity of the device and the floor area;

[0022] Driven by a pair of servo motors, the synchronous rotation of the linkage gears can be precisely controlled, thereby driving a pair of driven racks to translate alternately, realizing the forward and backward translation and unfolding of the first L-shaped top plate and the second L-shaped top plate respectively. The unfolding direction and distance of the top plate can be flexibly adjusted according to the actual size and support requirements of the roadway, improving the adaptability of the device to roadways of different specifications.

[0023] 2. In the present invention, the folding side plates and the hinged side plates are initially placed in a horizontally stacked state, occupying extremely little space when not unfolded, which is particularly suitable for the coal mine roadway environment with limited space. In the roadway, the effective utilization of space is crucial. Such a design facilitates transportation, installation and storage, reducing interference with other operations in the roadway.

[0024] Through the coordinated action of components such as the first telescopic cylinder, the driven swing arm, the lengthened connecting rod, the L-shaped connecting rod, the double horizontal shaft and the double gears, the orderly unfolding of the folding side plates and the hinged side plates is realized. The various components cooperate with each other, and can flexibly adjust the unfolding angle and position according to the actual shape and size of the inner side wall of the roadway, enhancing the adaptability to roadways of different shapes and specifications.

[0025] 3. In the present invention, four second telescopic cylinders serve as power sources, and cooperate with components such as the fixed coupling shaft, the hinged short rod, multiple connecting rods (the third connecting rod, the fourth connecting rod, the first connecting rod, the second connecting rod) and the triangular connecting plate to construct a compact and efficient transmission system. This layout realizes complex motion transmission in a limited space. The various components cooperate with each other, making full use of space resources and reducing the overall occupied space of the device, which is particularly suitable for use in the space-limited environment of coal mine roadways.

[0026] During the unfolding process of the device, the hinged and connected methods between the various components ensure the structural stability. The hinged action of the hinged short rod and different connecting rods enables the force to be evenly transmitted and dispersed during the movement process, avoiding structural damage caused by local stress concentration. The design of the triangular connecting plate further enhances the rigidity of the overall structure, enabling the entire device to remain stable during the rising process of the rectangular cross plate, providing a reliable structural basis for subsequent use.

[0027] 4. In the present invention, after the rectangular cross plate rises to the designated position, a U-shaped structure with the opening facing downwards is formed, which provides a safe and stable passage space for workers in the roadway. This structure can effectively prevent falling stones from the top and side walls of the roadway from causing harm to workers, ensuring the safety of workers walking and operating in the roadway.

[0028] In summary, the present invention has flexible support methods, strong adaptability, small floor area, is convenient for transportation, installation and storage, can ensure the safety of workers and the filling mining operation, and can improve the efficiency of the filling mining operation. Brief Description of the Drawings

[0029] The drawings described herein are provided to further understand the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 is an exploded schematic diagram of the overall structure of the present invention;

[0032] Figure 3 is a schematic diagram of the structure of the rectangular cross plate, the first L-shaped top plate, and the second L-shaped top plate in the present invention;

[0033] Figure 4 is an exploded schematic diagram of the rectangular cross plate, the first L-shaped top plate, and the second L-shaped top plate in the present invention;

[0034] Figure 5 is a schematic diagram of the structure of the elliptical cross plate, the hinged side plate, and the folding side plate in the present invention;

[0035] Figure 6 is an exploded schematic diagram of the elliptical cross plate, the hinged side plate, and the folding side plate in the present invention;

[0036] Figure 7 is a schematic diagram of the structure of the first trapezoidal foot plate, the second trapezoidal foot plate, and a pair of triangular connecting plates in the present invention;

[0037] Figure 8 is an exploded schematic diagram of the first trapezoidal foot plate, the second trapezoidal foot plate, and a pair of triangular connecting plates in the present invention;

[0038] The reference numerals are: 1, rectangular cross plate; 11, servo motor; 12, linkage gear; 13, U-shaped rail; 14, T-shaped slide; 15, translation plate; 16, driven rack; 17, flanging connecting plate; 18, first L-shaped top plate; 19, fixed slide bar; 110, second L-shaped top plate; 111, limit pin shaft; 112, limit plate; 113, bending pin hole; 2, elliptical cross plate; 21, L-shaped foot plate; 22, hinged side plate; 23, first horizontal axis; 24, folding side plate; 25, second horizontal axis; 26, hinged connecting rod; 27, L-shaped connecting rod; 28, lengthening connecting rod; 29, driven swing arm; 210, L-shaped bracket; 211, first telescopic cylinder; 212, first gear; 213, second gear; 3, first trapezoidal foot plate; 31, second telescopic cylinder; 32, second trapezoidal foot plate; 33, triangular connecting plate; 34, first connecting rod; 35, second connecting rod; 36, third connecting rod; 37, hinged short rod; 38, fourth connecting rod; 39, fixed connecting shaft. Detailed Description of the Invention

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0040] Embodiment: This embodiment provides a supporting body for a coal mine filling mining roadway. Refer to Figure 1-8 , which includes a rectangular cross plate 1. A pair of symmetrically distributed first L-shaped roof plates 18 are provided on the front side of the top surface of the rectangular cross plate 1. A pair of symmetrically distributed second L-shaped roof plates 110 are provided on the rear side of the top surface of the rectangular cross plate 1. The first L-shaped roof plates 18 and the second L-shaped roof plates 110 on the same side are connected to the rectangular cross plate 1 through a translation mechanism; the first L-shaped roof plates 18 and the second L-shaped roof plates 110 on the rectangular cross plate 1 can play a role in supporting the inner top wall of the roadway;

[0041] A pair of horizontally parallel elliptical cross plates 2 are provided directly below the rectangular cross plate 1. A pair of L-shaped foot plates 21 are fixedly provided on both sides of the top surface of the elliptical cross plate 2. An articulated side plate 22 is hinged between the pair of L-shaped foot plates 21. A folding side plate 24 is hinged above the articulated side plate 22. The articulated side plate 22 and the folding side plate 24 on the same side are vertically distributed; the folding side plate 24 and the articulated side plate 22 on the elliptical cross plate 2 can play a role in supporting the inner side wall of the roadway;

[0042] A load-bearing roller is rotatably installed at both ends of the bottom surface of each elliptical cross plate 2. A first trapezoidal foot plate 3 is fixedly provided on both sides of the top surface of each elliptical cross plate 2. Second trapezoidal foot plates 32 are fixedly provided at the four corners of the bottom surface of the rectangular cross plate 1. The first trapezoidal foot plates 3 and the second trapezoidal foot plates 32 on the same side are connected through a connecting rod mechanism; in the use state, the rectangular cross plate 1 and the pair of elliptical cross plates 2 form a U-shaped structure with the opening facing downwards in the roadway, which can allow workers to pass through.

[0043] In the specific implementation process, as Figure 3 and Figure 4 shown, the translation mechanism includes a pair of translation plates 15. A pair of translation plates 15 are provided between the first L-shaped roof plates 18 and the second L-shaped roof plates 110 on the same side and the rectangular cross plate 1. A folded edge connecting plate 17 is fixedly provided on the front side edge of the top surface of one translation plate 15. The top surface of the folded edge connecting plate 17 is fixedly connected to the bottom surface of the first L-shaped roof plate 18. A plurality of equally spaced fixed sliding rods 19 are slidably inserted into the other translation plate 15. The top end of each fixed sliding rod 19 is fixedly connected to the bottom surface of the second L-shaped roof plate 110; one translation plate 15 can drive the first L-shaped roof plate 18 to translate forward through the folded edge connecting plate 17, and the other translation plate 15 can drive the second L-shaped roof plate 110 to translate backward through the fixed sliding rods 19;

[0044] Two pairs of symmetrically distributed U-shaped rails 13 are fixed on both sides of the top surface of the rectangular horizontal plate 1. A T-shaped slide plate 14 is slidably engaged in each U-shaped rail 13. The top surface of each T-shaped slide plate 14 is fixedly connected to the bottom surface of the translation plate 15 on the same side. A pair of staggered driven racks 16 are fixed between the adjacent pairs of translation plates 15.

[0045] A pair of servo motors 11 are fixedly arranged on both sides of the top surface of the rectangular horizontal plate 1, and each servo motor 11 is located between a pair of U-shaped rails 13 on the same side. The motor shaft end of each servo motor 11 is sleeved with a concentrically fixed linkage gear 12, and the motor shaft of the servo motor 11 can drive the linkage gear 12 to rotate synchronously, and the linkage gear 12 is meshed and connected with a pair of driven racks 16 on the same side, and the linkage gear 12 can mesh and drive the pair of driven racks 16 to translate alternately, thereby synchronously driving the translation plate 15 and the T-shaped slide plate 14 to slide along the U-shaped rail 13;

[0046] Two pairs of symmetrically distributed limiting plates 112 are fixed on both sides of the top surface of the rectangular cross plate 1, and each pair of limiting plates 112 is located on the outer side of a pair of U-shaped rails 13 on the same side. A bending pin hole 113 is opened on the top edge of each limiting plate 112. The rear side edge of the first L-shaped top plate 18 is chamfered, and the front side edge of the second L-shaped top plate 110 is chamfered. A pair of limiting pin shafts 111 are fixed on the front end portions of the two side walls of the second L-shaped top plate 110, and each limiting pin shaft 111 is slidably engaged in the bending pin hole 113 on the same side; the limiting pin shaft 111 can slide along the bending pin hole 113. When the limiting pin shaft 111 slides along the bending pin hole 113, it can drive the fixed slide bar 19 to slide upward, driving the chamfered edges of the first L-shaped top plate 18 and the second L-shaped top plate 110 to be placed in a superimposed state, so that the first L-shaped top plate 18 and the second L-shaped top plate 110 are as follows Figure 3 The expanded state shown;

[0047] The servo motor 11 has high-precision speed control capability, and can drive the linkage gear 12 to rotate synchronously through its motor shaft, so that a pair of driven racks 16 can achieve precise staggered translation; the translation plate 15 and the T-shaped slide plate 14 slide stably along the U-shaped rail 13, ensuring the stability and accuracy of the unfolding process of the first L-shaped top plate 18 and the second L-shaped top plate 110; at the same time, the limiting pin shaft 111 slides along the bending pin hole 113 and the fixed slide rod 19 cooperates to further accurately limit and guide the translation of the first L-shaped top plate 18 and the second L-shaped top plate 110, avoiding the problems of deviation and shaking of the first L-shaped top plate 18 and the second L-shaped top plate 110 during the unfolding process, thereby improving the reliability of operation;

[0048] The meshing and driving mode of the linkage gear 12 and the driven rack 16 can efficiently transmit the power of the servo motor 11 to the translation plate 15 and the T-shaped slide plate 14, thereby driving the first L-shaped top plate 18 and the second L-shaped top plate 110 to translate; when the first L-shaped top plate 18 and the second L-shaped top plate 110 are unfolded according to the designed mode, they can cover the inner top wall of the roadway above the rectangular cross plate 1 and provide large-area support for the top wall; this large-area support can effectively disperse the roof pressure, reduce the risk of local stress concentration on the roadway top wall, reduce the possibility of roof deformation and collapse, and ensure the stability and safety of the roadway;

[0049] The chamfered edges of the first L-shaped top plate 18 and the second L-shaped top plate 110 are placed in an overlapping state and form a stable support structure after unfolding. This structural design increases the connection strength and stability between the first L-shaped top plate 18 and the second L-shaped top plate 110, and improves the load-bearing capacity of the entire device; at the same time, the first L-shaped top plate 18 and the second L-shaped top plate 110 are respectively driven to translate through the folding edge connecting plate 17 and the fixed sliding rod 19, further enhancing the connection reliability between the roof and the translation mechanism, ensuring that the roof will not loosen or fall off during the support process, and providing reliable guarantee for the life safety of coal mine workers and the normal operation of equipment.

[0050] In the specific implementation process, as Figure 5 and Figure 6 shown, a pair of first horizontal axes 23 distributed through are fixedly arranged on the upper and lower sides of the hinged side plate 22, a second horizontal axis 25 distributed through is fixedly arranged on the bottom side of the folding side plate 24, the two end parts of the first horizontal axis 23 located below are rotatably inserted into a pair of L-shaped foot plates 21, a concentrically fixedly connected first gear 212 is sleeved on the right end part of the first horizontal axis 23 located above, a concentrically fixedly connected second gear 213 is sleeved on the right end part of the second horizontal axis 25, and the first gear 212 is meshed and connected with the second gear 213; the second gear 213 can rotate meshingly along the first gear 212 and drive the folding side plate 24 and the hinged side plate 22 to be in the unfolded state as Figure 5 shown;

[0051] The right end parts of the first horizontal axis 23 located above and the second horizontal axis 25 are respectively movably hinged to the two end parts of the same hinged connecting rod 26, the left end parts of the first horizontal axis 23 located above and the second horizontal axis 25 are respectively movably hinged to the corner and the bottom end of the same L-shaped connecting rod 27, an extended connecting rod 28 is movably hinged to the top end of the L-shaped connecting rod 27, and the bottom end of the extended connecting rod 28 is movably hinged to the L-shaped foot plate 21 on the same side; under the hinging action of the extended connecting rod 28 and the L-shaped connecting rod 27, the folding side plate 24 can be driven to rotate upward along the second horizontal axis 25;

[0052] The left end of the first horizontal shaft 23 located below is fixedly provided with a driven swing arm 29. One side of the bottom surface of the elliptical transverse plate 2 is fixedly provided with an L-shaped bracket 210. The top end of the L-shaped bracket 210 is provided with a U-shaped notch. Inside the U-shaped notch, there is a first telescopic cylinder 211 that is movably hinged. The end of the telescopic rod of the first telescopic cylinder 211 is movably hinged to the top end of the driven swing arm 29. By controlling the telescopic rod of the first telescopic cylinder 211 to extend, the first horizontal shaft 23 and the hinged side plate 22 located below can be driven by the driven swing arm 29 to rotate upward along the first horizontal shaft 23 located below.

[0053] The first telescopic cylinder 211 provides a stable and precisely controllable driving force. By controlling the elongation of its telescopic rod, the angle of the hinged side plate 22 rotating upward along the first horizontal shaft 23 can be accurately controlled. Furthermore, through the transmission of a series of connecting rods and gears, the amplitude of the folding side plate 24 rotating upward along the second horizontal shaft 25 can be accurately controlled. This precise control performance ensures the smoothness and accuracy of the unfolding process of the hinged side plate 22 and the folding side plate 24, avoiding the problem of insufficient support caused by inaccurate unfolding angles.

[0054] The hinged action between the lengthened connecting rod 28 and the L-shaped connecting rod 27 and the meshing rotation between the second gear 213 and the first gear 212 form a reliable transmission chain. This transmission method can not only effectively transmit power but also withstand a large load during the transmission process, thus being able to adapt to the harsh working environment in the coal mine. Even under long-term use and vibration, it can ensure the stability and reliability of the transmission, reducing the probability of device failures.

[0055] When the folding side plate 24 and the hinged side plate 22 are unfolded according to the designed state, they can fully cover the area of the inner side wall of the roadway corresponding to the elliptical transverse plate 2. This large-area support coverage can evenly disperse the pressure borne by the inner side wall of the roadway, effectively reducing the risk of local deformation, cracks, or even collapse of the side wall, ensuring the overall stability and safety of the roadway. The unfolded folding side plate 24 and hinged side plate 22 form a stable support structure, cooperating with each other to provide a strong support force for the inner side wall of the roadway. Especially in some areas with complex geological conditions and large side wall pressures, this structure can better resist external forces, ensure the safety of the roadway, and provide strong guarantee for the smooth progress of coal mine production. At the same time, the design of this support structure also reduces the number of times that workers need to perform frequent support maintenance in dangerous areas, reducing safety risks.

[0056] In the specific implementation process, such as Figure 7 and Figure 8As shown in the figure, the linkage mechanism includes a pair of triangular connecting plates 33. A pair of triangular connecting plates 33 are provided between the first trapezoidal foot plate 3 and the second trapezoidal foot plate 32. An actively articulated first connecting rod 34 is provided between the bottom ends of the pair of triangular connecting plates 33. The bottom end of the first connecting rod 34 is actively articulated with the bottom end of the first trapezoidal foot plate 3. An actively articulated second connecting rod 35 is provided between the top ends of the pair of triangular connecting plates 33. The top end of the second connecting rod 35 is actively articulated with the top end of the second trapezoidal foot plate 32;

[0057] A driven connecting shaft is rotatably inserted through the middle parts of the pair of triangular connecting plates 33. A pair of parallelly distributed fourth connecting rods 38 are fixedly provided at both ends of the driven connecting shaft. The top ends of the pair of fourth connecting rods 38 are respectively actively articulated with the bottom ends of the second trapezoidal foot plate 32, and the second connecting rod 35 is in a parallel state with the pair of fourth connecting rods 38. A pair of parallelly distributed third connecting rods 36 are articulated at the top end of the first trapezoidal foot plate 3. The middle upper parts of each third connecting rod 36 are actively articulated with the other ends of the triangular connecting plates 33 on the same side, and the first connecting rod 34 is in a parallel state with the pair of third connecting rods 36;

[0058] A fixed connecting shaft 39 is rotatably inserted through the pair of fourth connecting rods 38. A pair of articulated short rods 37 are articulated at both ends of the fixed connecting shaft 39. The bottom end of each articulated short rod 37 is actively articulated with the top end of the third connecting rod 36 on the same side;

[0059] Under the articulation action of the articulated short rod 37 and the fourth connecting rod 38, the fourth connecting rod 38 and the second connecting rod 35 can be synchronously driven to swing articulately. Under the articulation action of the articulated short rod 37 and the third connecting rod 36, the triangular connecting plate 33, the first connecting rod 34, and the third connecting rod 36 can be synchronously driven to swing upwards obliquely;

[0060] A second telescopic cylinder 31 is actively articulated in the middle of the first trapezoidal foot plate 3. The end of the telescopic rod of the second telescopic cylinder 31 is actively articulated with the middle of the fixed connecting shaft 39; By controlling the telescopic rod of the second telescopic cylinder 31 to extend, the pair of articulated short rods 37 can be driven to rise through the fixed connecting shaft 39;

[0061] The driving of the four second telescopic cylinders 31 can accurately control the extension amount of the telescopic rods, thereby realizing the precise adjustment of the rising height of the articulated short rods 37. Through the transmission of a series of connecting rods, this precise control can be further transmitted to the rising process of the rectangular cross plate 1, enabling it to accurately rise to the specified position; This precise motion control can meet the requirements of different roadway heights, improving the versatility and adaptability of the device;

[0062] Through the ingenious connecting rod hinge design, the device realizes the coordinated swinging and movement of various components. Under the action of the hinge short rod 37, the third connecting rod 36 and the fourth connecting rod 38 can drive different components to swing in different directions respectively, and finally realize the elevation of the rectangular cross plate 1. This flexible movement mode enables the device to operate smoothly during the deployment and retraction processes, reduces the possibility of movement interference, and improves the operation convenience.

[0063] When the rectangular cross plate 1 rises along a pair of elliptical cross plates 2 to the specified position, a U-shaped structure with the opening facing downwards is formed, which provides a safe and stable passage space for workers in the roadway. This U-shaped structure can effectively prevent falling stones from the top and side walls of the roadway from hurting workers, ensuring the safety of workers walking and operating in the roadway.

[0064] The deployable and retractable design of the device enables the roadway space to be flexibly adjusted according to actual needs. When passage is required, the device is deployed to form a passage; when not needed, it can be retracted without affecting the operation of other equipment in the roadway. This convenient passage conversion function improves the utilization rate of the roadway space and optimizes the working process of coal mine production.

[0065] Specifically, the working principle and operation method of the present invention are as follows:

[0066] Step 1, push the load-bearing rollers to move a pair of elliptical cross plates 2 and the rectangular cross plate 1 to the specified position in the roadway. The initial states of the first L-shaped top plate 18 and the second L-shaped top plate 110 are stacked one above the other. Under the driving action of a pair of servo motors 11, the motor shafts of the servo motors 11 drive the linkage gears 12 to rotate synchronously. The linkage gears 12 engage to drive a pair of driven racks 16 to translate alternately, and simultaneously drive the translation plate 15 and the T-shaped slide plate 14 to slide along the U-shaped rail 13.

[0067] One translation plate 15 drives the first L-shaped top plate 18 to translate forward through the folded-edge connecting plate 17, and the other translation plate 15 drives the second L-shaped top plate 110 to translate backward through the fixed slide rod 19, simultaneously driving the limit pin shaft 111 to slide along the bent pin hole 113, driving the fixed slide rod 19 to slide upward, and driving the chamfered edges of the first L-shaped top plate 18 and the second L-shaped top plate 110 to be placed in a stacked state, so that the first L-shaped top plate 18 and the second L-shaped top plate 110 are in the deployed state as shown in Figure 3 shown.

[0068] Step 2, under the driving action of four second telescopic cylinders 31, control the telescopic rods of the second telescopic cylinders 31 to extend, drive a pair of hinge short rods 37 to rise through the fixed coupling shaft 39, and under the hinge action of the hinge short rods 37 and the third connecting rod 36, simultaneously drive the triangular connecting plate 33, the first connecting rod 34, and the third connecting rod 36 to swing obliquely upward.

[0069] Under the articulation of the articulated short rod 37 and the fourth connecting rod 38, the fourth connecting rod 38 and the second connecting rod 35 are synchronously driven to swing in the opposite direction by articulation, driving the second trapezoidal foot plate 32 and the first trapezoidal foot plate 3 to be in the unfolded state as shown in Figure 7 the figure, so that the rectangular cross plate 1 rises along a pair of elliptical cross plates 2 to a specified position;

[0070] Step 3: The folding side plate 24 and the articulated side plate 22 are initially placed in a horizontally stacked state. Under the driving action of the first telescopic cylinder 211, the telescopic rod of the first telescopic cylinder 211 is controlled to extend, driving the first horizontal shaft 23 and the articulated side plate 22 located below to rotate upward along the first horizontal shaft 23 located below through the driven swing arm 29. Under the articulation of the lengthening connecting rod 28 and the L-shaped connecting rod 27, the folding side plate 24 is driven to rotate upward along the second horizontal shaft 25, synchronously driving the second gear 213 to rotate meshingly along the first gear 212, and driving the folding side plate 24 and the articulated side plate 22 to be in the unfolded state as shown in Figure 5 the figure;

[0071] Step 4: The rectangular cross plate 1 and a pair of elliptical cross plates 2 form a U-shaped state with the opening facing downward in the roadway for workers to pass through. The first L-shaped top plate 18 and the second L-shaped top plate 110 on the rectangular cross plate 1 play a role in supporting the top wall in the roadway, and the folding side plate 24 and the articulated side plate 22 on the elliptical cross plate 2 play a role in supporting the inner side wall of the roadway.

[0072] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A roadway support body for coal mine filling mining, characterized in that: It includes a rectangular horizontal plate (1). A pair of symmetrically distributed first L-shaped top plates (18) are provided on the front side of the top surface of the rectangular horizontal plate (1). A pair of symmetrically distributed second L-shaped top plates (110) are provided on the rear side of the top surface of the rectangular horizontal plate (1). The first L-shaped top plates (18) and the second L-shaped top plates (110) on the same side are connected to the rectangular horizontal plate (1) through a translation mechanism; A pair of horizontally parallel distributed elliptical horizontal plates (2) are provided directly below the rectangular horizontal plate (1). A pair of L-shaped foot plates (21) are fixedly provided on both sides of the top surface of the elliptical horizontal plate (2). An articulated side plate (22) is hinged between the pair of L-shaped foot plates (21). A folding side plate (24) is hinged above the articulated side plate (22). The articulated side plate (22) and the folding side plate (24) on the same side are vertically distributed; Load-bearing rollers are rotatably installed at both end parts of the bottom surface of each elliptical horizontal plate (2). A pair of first trapezoidal foot plates (3) are fixedly provided on both sides of the top surface of each elliptical horizontal plate (2). Second trapezoidal foot plates (32) are fixedly provided at the four corners of the bottom surface of the rectangular horizontal plate (1). The first trapezoidal foot plates (3) and the second trapezoidal foot plates (32) on the same side are connected through a link mechanism; The translation mechanism includes a pair of translation plates (15). A pair of translation plates (15) are provided between the first L-shaped top plates (18), the second L-shaped top plates (110) and the rectangular horizontal plate (1) on the same side. A folded-edge connecting plate (17) is fixedly provided on the front side edge of the top surface of one translation plate (15). The top surface of the folded-edge connecting plate (17) is fixedly connected to the bottom surface of the first L-shaped top plate (18). A number of equally spaced fixed sliding rods (19) are slidably inserted on the other translation plate (15). The top end of each fixed sliding rod (19) is fixedly connected to the bottom surface of the second L-shaped top plate (110); Two pairs of symmetrically distributed U-shaped clamping rails (13) are fixedly provided on both sides of the top surface of the rectangular horizontal plate (1). A T-shaped sliding plate (14) is slidably clamped in each U-shaped clamping rail (13). The top surface of each T-shaped sliding plate (14) is fixedly connected to the bottom surface of the translation plate (15) on the same side. A pair of staggeredly distributed driven racks (16) are fixedly provided between the adjacent pair of translation plates (15); A pair of servo motors (11) are fixedly provided on both sides of the top surface of the rectangular horizontal plate (1). Each servo motor (11) is located between a pair of U-shaped clamping rails (13) on the same side. A concentrically fixedly connected linkage gear (12) is sleeved at the end of the motor shaft of each servo motor (11). And the linkage gear (12) is meshed and connected with a pair of driven racks (16) on the same side; On both sides of the top surface of the rectangular transverse plate (1), two pairs of symmetrically distributed limiting plates (112) are fixedly arranged. Each pair of the limiting plates (112) is located outside a pair of U-shaped clamping rails (13) on the same side. A bending pin hole (113) is formed in the top edge of each limiting plate (112). The rear side edge of the first L-shaped top plate (18) is chamfered, and the front side edge of the second L-shaped top plate (110) is chamfered. A pair of limiting pin shafts (111) are fixedly arranged at the front ends of both side walls of the second L-shaped top plate (110). Each limiting pin shaft (111) is slidably clamped in the bending pin hole (113) on the same side.

2. The roadway support body for coal mine filling mining according to claim 1, wherein: A pair of first cross shafts (23) distributed through are fixedly arranged on the upper and lower sides of the hinged side plate (22). A second cross shaft (25) distributed through is fixedly arranged at the bottom side of the folding side plate (24). The two end parts of the first cross shaft (23) located below are rotatably inserted on a pair of L-shaped foot plates (21). A first gear (212) is concentrically fixedly sleeved at the right end part of the first cross shaft (23) located above. A second gear (213) is concentrically fixedly sleeved at the right end part of the second cross shaft (25). The first gear (212) is meshed and connected with the second gear (213).

3. The roadway support body for coal mine filling mining according to claim 2, characterized in that: The right end parts of the first cross shaft (23) located above and the second cross shaft (25) are respectively movably hinged to the two end parts of the same hinged connecting rod (26). The left end parts of the first cross shaft (23) located above and the second cross shaft (25) are respectively movably hinged to the corner and the bottom end part of the same L-shaped connecting rod (27). An extended connecting rod (28) is movably hinged at the top end part of the L-shaped connecting rod (27). The bottom end part of the extended connecting rod (28) is movably hinged to the L-shaped foot plate (21) on the same side.

4. The support body for the roadway in coal mine filling mining according to claim 3, characterized in that: A driven swing arm (29) is fixedly arranged at the left end part of the first cross shaft (23) located below. An L-shaped bracket (210) is fixedly arranged on one side of the bottom surface of the elliptical transverse plate (2). A U-shaped notch is formed at the top end part of the L-shaped bracket (210). A first telescopic cylinder (211) is movably hinged inside the U-shaped notch. The end part of the telescopic rod of the first telescopic cylinder (211) is movably hinged to the top end part of the driven swing arm (29).

5. A roadway support body for coal mine backfill mining according to claim 4, characterized in that: The link mechanism includes a pair of triangular connecting plates (33). A pair of triangular connecting plates (33) are arranged between the first trapezoidal foot plate (3) and the second trapezoidal foot plate (32). A first connecting rod (34) is movably hinged between the bottom end parts of the pair of triangular connecting plates (33). The bottom end part of the first connecting rod (34) is movably hinged to the bottom end part of the first trapezoidal foot plate (3). A second connecting rod (35) is movably hinged between the top end parts of the pair of triangular connecting plates (33). The top end part of the second connecting rod (35) is movably hinged to the top end part of the second trapezoidal foot plate (32).

6. The roadway support body for coal mine backfill mining according to claim 5, characterized in that: A driven connecting shaft penetratingly distributed is rotatably inserted between the middles of a pair of the triangular connecting plates (33). A pair of parallelly distributed fourth connecting rods (38) are fixedly arranged at two end parts of the driven connecting shaft. The top ends of the pair of fourth connecting rods (38) are respectively movably hinged to the bottom end part of the second trapezoidal foot plate (32). The second connecting rod (35) is in a parallel state with the pair of fourth connecting rods (38). The top end part of the first trapezoidal foot plate (3) is hinged with a pair of parallelly distributed third connecting rods (36). The middle upper parts of each of the third connecting rods (36) are movably hinged to the other end part of the triangular connecting plate (33) on the same side. The first connecting rod (34) is in a parallel state with the pair of third connecting rods (36).

7. The roadway support body for coal mine backfill mining according to claim 6, characterized in that: A fixed connecting shaft (39) penetratingly distributed is rotatably inserted between the pair of fourth connecting rods (38). A pair of hinge short rods (37) are hinged to two end parts of the fixed connecting shaft (39). The bottom end part of each of the hinge short rods (37) is movably hinged to the top end part of the third connecting rod (36) on the same side. A second telescopic cylinder (31) with a movable hinge is arranged in the middle of the first trapezoidal foot plate (3). The end part of the telescopic rod of the second telescopic cylinder (31) is movably hinged to the middle of the fixed connecting shaft (39).

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