An energy-saving crushing and conveying device for coal gangue filling in coal mining subsidence areas

Abstract

The present invention discloses an energy-saving crushing and conveying device for filling coal gangue in coal mining subsidence areas, which relates to the technical field of coal gangue filling. It includes a conveyor main body, an outer fixed frame and an inner telescopic frame. The outer fixed frame is arranged at the top of the conveyor main body, and the inner telescopic frame is arranged inside the outer fixed frame. Both sides of the inner telescopic frame are slidably connected to the inner wall of the outer fixed frame; by adjusting the head to face different height positions, the coal gangue on the surface of the conveyor belt can be conveyed to different height positions. The conveyor belt moves the coal gangue to a suitable height, which will not cause a hollow layer again and affect the geological stability after coal mine filling. It can avoid the separation of the conveyor belt from the surface of the adjusting head and the inner telescopic frame when adjusting the angle of the adjusting head, ensure that the conveyor belt fits with the adjusting head and the inner telescopic frame, break the larger coal gangue and convey it to the designated height along with the conveyor belt, making the filled coal gangue more compact.

Description

Technical Field

[0001] The present invention relates to the technical field of coal gangue filling, and particularly to an energy-saving crushing and conveying device for coal gangue filling in coal mining subsidence areas. Background Technique

[0002] Coal gangue filling in coal mining subsidence areas is an important treatment technology for land subsidence problems caused by coal mining. This technology mainly uses coal gangue generated during the coal mining process to fill the subsidence area to restore the land use value and improve the ecological environment. The coal gangue filling technology takes coal gangue as the filling material, makes reasonable layout and compaction of it, fills it into the coal mining subsidence area, and then covers a certain thickness of soil on it to facilitate land reclamation and utilization, which is of great significance for promoting the sustainable development of the mining area.

[0003] In the Chinese patent literature, in the patent with the patent number CN118343446B and the patent name "A Telescopic Conveyor Belt", it is described in the specification that "the described telescopic conveyor belt includes a mounting frame body 1, a telescopic frame 2, and a conveyor belt body 11; the mounting frame body 1 is a frame-type structure body, the telescopic frame 2 is installed on the mounting frame body 1, and the conveyor belt body 11 is sleeved and installed on the telescopic frame 2;... the fixed seat 21, the extension seat 22, and the end seat 23 are sequentially slidably sleeved", it can be seen that the telescopic assembly can extend and retract the telescopic frame along the mounting frame body;

[0004] However, in the prior art, when the telescopic frame extends and retracts along the mounting frame body, the angle of the telescopic frame cannot be adjusted, and only the coal gangue on the entire telescopic frame can be conveyed to a specific position. The coal gangue cannot be conveyed to a place that is slightly higher than the telescopic frame, which affects the efficiency of the conveyor belt in conveying coal gangue. In addition, the inability to convey coal gangue to a higher place will cause a hollow layer again, affecting the geological stability after coal mining filling. Since the coal gangue particles are relatively large, it is easy to cause the filled place of the coal gangue to be not dense, which will also lead to the re-collapse of the coal mining area. Summary of the Invention

[0005] The purpose of the present invention is to provide an energy-saving crushing and conveying device for coal gangue filling in coal mining subsidence areas to solve the problems raised in the above background technique.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] An energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area, comprising a conveyor main body, an outer fixed frame and an inner telescopic frame. The outer fixed frame is arranged at the top of the conveyor main body, and the inner telescopic frame is arranged inside the outer fixed frame. The two sides of the inner telescopic frame are slidably connected to the inner wall of the outer fixed frame. A conveyor belt is sleeved between the outer fixed frame and the inner telescopic frame. An angle adjustment structure is arranged at the end of the inner telescopic frame. The angle adjustment structure includes an adjustment head. The adjustment head is arranged at the end of the inner telescopic frame, and a fixed shaft is arranged at the intersection of the inner telescopic frame and the adjustment head. Three-legged plates are welded to the side walls of the adjustment head. Guide grooves are formed inside the three-legged plates. A second toggle rod and a first toggle rod are respectively arranged at the upper edge and the lower edge of the tip of the three-legged plate. An incomplete gear is arranged at the edge of the first toggle rod. A driving motor is arranged at the tip edge of the three-legged plate. A spur gear is arranged at the end of the driving motor. The axis of the spur gear is rotatably connected to the three-legged plate. The spur gear meshes with the incomplete gear of the first toggle rod. The first toggle rod and the second toggle rod are connected by a four-bar mechanism. The first toggle rod and the second toggle rod rotate synchronously. Guide rods are arranged at both ends of the outer fixed frame and on both sides of the inner telescopic frame. Guide columns are arranged at the ends of the two guide rods, and the guide columns are located inside the guide grooves. The position where the guide columns cooperate with the guide grooves is used to determine the inclination angle of the adjustment head.

[0008] As a preferred technical solution of the present invention, the four-bar mechanism constitutes a double-rocker mechanism. The four-bar mechanism includes a first link that rotates synchronously with the first toggle rod, a second link that rotates synchronously with the second toggle rod, and an intermediate link that is connected to the first link and the second link. The two ends of the intermediate link are respectively rotatably connected to the first link and the second link. The four-bar mechanism is used to control the directions of the first floating rod and the second toggle rod.

[0009] As a preferred technical solution of the present invention, the guide groove includes a first guide groove, a second guide groove and a third guide groove. The first guide groove, the second guide groove and the third guide groove are arranged in a "one" shape. The first toggle rod and the second toggle rod are arranged in an "eight" shape. The end of the adjustment head is rotatably connected to the end of the inner telescopic frame, and the rotation center of the end of the three-legged plate is aligned with the axis of the fixed shaft.

[0010] As a preferred technical solution of the present invention, the tips of the first toggle rod and the second toggle rod both face the first guide groove. The guide column at the end of the guide rod slides inside the first guide groove, and the end of the adjustment head is arranged obliquely upward.

[0011] As a preferred technical solution of the present invention, the tips of the first toggle rod and the second toggle rod both face the second guide groove. The guide column at the end of the guide rod slides inside the second guide groove, and the end of the adjustment head is arranged horizontally.

[0012] As a preferred technical solution of the present invention, the tips of the first shifting rod and the second shifting rod both face the third guide groove, the guide post at the end of the guide rod is slidably connected to the inside of the third guide groove, and the end of the adjustment head is arranged obliquely downward.

[0013] As a preferred technical solution of the present invention, a crushing structure is provided at the end of the inner telescopic frame. The crushing structure includes two connecting plates, which are respectively arranged on both sides of the end of the inner telescopic frame. The two connecting plates are integrally manufactured with the inner telescopic frame. Rotating shafts are arranged between the tops and the bottoms of the two connecting plates. A rotating cylinder is arranged at the rotating shaft at the top of the connecting plate. A circle of first fixing strips is welded in the middle of the rotating cylinder. A row of crushing teeth is welded to the edge of each first fixing strip. The annularly arranged first fixing strips are in contact with the conveyor belt.

[0014] As a preferred technical solution of the present invention, the rotating shaft at the bottom of the inner telescopic frame is in contact with the lower surface of the conveyor belt, the two ends of the rotating shaft at the top of the inner telescopic frame are rotatably connected to the connecting plate, and the rotation radius of the first fixing strip is equal to the distance between the conveyor belt and the top rotating shaft.

[0015] As a preferred technical solution of the present invention, reserved grooves are opened at both ends of the two sides of the inner telescopic frame. A second fixing strip is arranged between the two reserved grooves. There is a gap between the second fixing strip and the upper surface of the conveyor belt. Floating rods one and two are welded to both ends of the second fixing strip. The floating rods one and two are both located inside the reserved grooves. Telescopic springs are sleeved outside the two floating rods one and on both sides of the second fixing strip. A row of crushing grooves is opened at the edge of the second fixing strip and near the crushing teeth. The crushing teeth and the crushing grooves are used for crushing coal gangue.

[0016] As a preferred technical solution of the present invention, both the floating rod one and the floating rod two are movably connected to the inside of the reserved groove. The crushing teeth approach or move away from the crushing grooves, and the crushing teeth are slidably connected to the side walls of the crushing grooves.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] An angle adjustment structure is provided. The adjustment head and the tripod rotate around the fixed shaft, so that the adjustment head can be oriented at different height positions, and the coal gangue on the upper surface of the conveyor belt can be conveyed to different height positions;

[0019] The first shifting rod and the second shifting rod are adjusted by using a four-bar mechanism. The guide post at the end of the guide rod can move along the gap between the first shifting rod and the second shifting rod, so that the adjustment head and the tripod can be adjusted to a specific height. The conveyor belt moves the coal gangue to a suitable height, and will not cause a hollow layer again and affect the geological stability after the coal mine is filled;

[0020] A crushing structure is provided, which can use the bottom rotating shaft and the annular fixing strip 1 to limit the upper and lower surfaces of the conveyor belt, thereby preventing the conveyor belt from separating from the adjusting head and the surface of the inner telescopic frame when adjusting the angle of the head, and ensuring that the conveyor belt fits with the adjusting head and the inner telescopic frame;

[0021] By the contact of the fixing strip 1 and the fixing strip 2, when the coal gangue is located between the fixing strip 1 and the fixing strip 2, the coal gangue can be crushed, and the larger coal gangue is broken and then conveyed to the specified height along with the conveyor belt, making the filled coal gangue more compact. Brief Description of the Drawings

[0022] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 It is the main structure diagram of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area of the present invention;

[0024] Figure 2 It is a schematic diagram of the conveyor belt and the inner telescopic frame of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area of the present invention;

[0025] Figure 3 It is a schematic diagram of the angle adjustment structure of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area of the present invention;

[0026] Figure 4 It is a schematic diagram of the rotating state of the adjusting head of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area of the present invention;

[0027] Figure 5 It is a schematic diagram of the cooperation between the guide post and the guide groove 1 of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area of the present invention;

[0028] Figure 6 It is a schematic diagram of the cooperation between the guide post and the guide groove 2 of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area of the present invention;

[0029] Figure 7 It is a schematic diagram of the cooperation between the guide post and the guide groove 3 of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area of the present invention;

[0030] Figure 8 It is a schematic diagram of the crushing structure of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area of the present invention;

[0031] Figure 9 It is a schematic diagram of the rotating cylinder and the fixing strip 1 of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area of the present invention;

[0032] Figure 10It is a schematic diagram of the cooperation between the crushing teeth and the crushing groove of an energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area according to the present invention.

[0033] In the figure: 1, conveyor main body; 2, outer fixed frame; 3, conveyor belt; 4, inner telescopic frame; 5, angle adjustment structure; 51, adjustment head; 52, fixed shaft; 53, tripod plate; 54, guide groove; 541, guide groove 1; 542, guide groove 2; 543, guide groove 3; 55, guide rod; 56, guide column; 57, drive motor; 58, spur gear; 59, toggle rod 1; 510, incomplete gear; 511, four-bar mechanism; 512, toggle rod 2; 6, crushing structure; 61, connecting plate; 62, rotating shaft; 63, rotating cylinder; 64, fixing strip 1; 65, crushing teeth; 66, fixing strip 2; 67, reserved groove; 68, crushing groove; 69, floating rod 1; 610, telescopic spring; 611, floating rod 2. Detailed implementation manners

[0034] The technical solutions of the present invention will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] Please refer to Figures 1 - 4As shown, an energy-saving crushing and conveying device for filling coal gangue in coal mining subsidence areas includes a conveyor body 1, an external fixed frame 2 and an internal telescopic frame 4. The external fixed frame 2 is arranged at the top of the conveyor body 1, and the internal telescopic frame 4 is arranged inside the external fixed frame 2. Both sides of the internal telescopic frame 4 are slidably connected with the inner wall of the external fixed frame 2. The telescopic conveyor belt 3 refers to a conveying mechanism that can be extended or shortened in the length direction, and its transportation distance can be adjusted according to actual needs. The internal telescopic frame 4 can be extended and retracted, and the length of the conveyor belt 3 can be adjusted when the internal telescopic frame 4 is extended and retracted to ensure that the conveyor belt 3 and the internal telescopic frame 4 are extended to the specified position. There is a sleeve between the external fixed frame 2 and the internal telescopic frame 4. Conveyor belt 3, coal gangue is placed on the conveyor belt 3 so that the coal gangue is transported to the end of the conveyor belt 3, and the end of the inner telescopic frame 4 is provided with an angle adjustment structure 5, the angle adjustment structure 5 includes an adjustment head 51, the adjustment head 51 is provided at the end of the inner telescopic frame 4, and a fixed shaft 52 is provided at the intersection of the inner telescopic frame 4 and the adjustment head 51, and the side walls of the adjustment head 51 are welded with tripods 53, and the ends of the tripods 53 are rotatably connected to the fixed shaft 52, so that the adjustment head 51 can face different angles, and a guide groove 54 is provided inside the tripod 53, and the upper edge and lower edge of the tip of the tripod 53 are respectively provided with a toggle rod 2 512 and a toggle rod 1 59, which can be used to adjust the toggle rod 1 59 and the toggle rod 2 51 2 to change the angle, the edge of the toggle rod 59 is provided with an incomplete gear 510, the tip edge of the tripod 53 is provided with a drive motor 57, the end of the drive motor 57 is provided with a spur gear 58, the axis of the spur gear 58 is rotatably connected to the tripod 53, the spur gear 58 is meshed with the incomplete gear 510 of the toggle rod 59, the drive motor 57 drives the spur gear 58 to rotate, so that the spur gear 58 and the incomplete gear 510 of the toggle rod 59 are transmitted, the toggle rod 59 can rotate around its axis, the toggle rod 59 and the toggle rod 2 512 are connected by a four-bar mechanism 511, the toggle rod 1 59 and the toggle rod 2 512 rotate synchronously, the two side ends of the external fixed frame 2 and are located inside the telescopic Guide rods 55 are provided on both sides of the frame 4, and guide columns 56 are provided at the ends of the two guide rods 55, and the guide columns 56 are located inside the guide grooves 54. The positions of the guide columns 56 and the guide grooves 54 are used to determine the inclination angle of the adjustment head 51. When the toggle rod 1 59 is rotated, the toggle rod 2 512 is swung by the four-bar mechanism 511, so that the toggle rod 1 59 and the toggle rod 2 512 are pointed to the guide grooves 54. When the inner telescopic frame 4 is extended or retracted, the guide rod 55 welded to the outside of the outer fixed frame 2 moves relative to the inner telescopic frame 4, and the guide column 56 at the end of the guide rod 55 moves along the inside of the guide grooves 54, thereby adjusting the angle of the adjustment head 51 and the tripod 53, and the coal gangue can be rotated to a suitable angle.

[0037] See also Figures 3 - 7As shown, the four-bar mechanism 511 constitutes a double rocker mechanism, and the four-bar mechanism 511 includes a connecting rod 1 that rotates synchronously with the toggle rod 1 59, a connecting rod 2 that rotates synchronously with the toggle rod 2 512, and an intermediate rod connected to the connecting rod 1 and the connecting rod 2. The two ends of the intermediate rod are respectively connected to the connecting rod 1 and the connecting rod 2 for rotation. When the spur gear 58 drives the incomplete gear 510, the toggle rod 1 59 can rotate. The rotation of the toggle rod 1 59 can drive the toggle rod 2 512 to rotate through the four-bar mechanism 511. The four-bar mechanism 511 is used to control the direction of the floating rod 1 69 and the toggle rod 2 512, thereby adjusting the synchronous swing of the toggle rod 1 59 and the toggle rod 2 512, so that the ends of the toggle rod 1 59 and the toggle rod 2 512 point to the guide groove 54, and are introduced into the guide groove 54 by the guide column 56 at the end of the guide rod 55.

[0038] See also Figure 3 and Figure 4 As shown, the guide groove 54 includes a guide groove 1 541, a guide groove 2 542 and a guide groove 3 543, and the guide groove 1 541, the guide groove 2 542 and the guide groove 3 543 are arranged in an "I" shape. The guide groove 1 541, the guide groove 2 542 and the guide groove 3 543 can adjust the machine head 51 and the tripod 53 to face downward, middle and upward respectively, and the toggle rod 1 59 and the toggle rod 2 512 are in an "eight" shape. The guide column 56 at the end of the guide rod 55 enters into the designated guide groove 54 along the gap between the toggle rod 1 59 and the toggle rod 2 512, and the end of the adjustment machine head 51 is rotatably connected to the end of the inner telescopic frame 4, and the rotation center of the end of the tripod 53 is aligned with the axis of the fixed shaft 52, so that the adjustment machine head 51 and the tripod 53 face upward, middle and downward, and the coal gangue on the conveyor belt 3 can be transported to the designated position, so that the coal gangue fills the coal mining subsidence area.

[0039] See also Figure 5 As shown, the tips of the toggle rod 1 59 and the toggle rod 2 512 are both pointing toward the guide groove 1 541, the guide column 56 at the end of the guide rod 55 is slidably connected to the inside of the guide groove 1 541, and the end of the adjustment head 51 is arranged obliquely upward, and the guide column 56 at the end of the guide rod 55 is inserted into the guide groove 1 541, so that the adjustment head 51 and the tripod 53 rotate around the fixed axis 52, thereby tilting the adjustment head 51 and the tripod 53 upward. At this time, the coal gangue located on the conveyor belt 3 is transported to the upper position of the coal mine goaf.

[0040] See also Figure 6As shown, the tips of the first toggle lever 59 and the second toggle lever 512 both face the second guide groove 542. The guide post 56 at the end of the guide rod 55 is slidably connected to the inside of the second guide groove 542, and the end of the adjustment head 51 is horizontally arranged. The guide post 56 at the end of the guide rod 55 is inserted into the second guide groove 542, so that the adjustment head 51 and the tripod plate 53 rotate around the fixed shaft 52, thereby moving the adjustment head 51 and the tripod plate 53 in the horizontal direction. At this time, the coal gangue on the conveyor belt 3 is transported to the middle position of the goaf of the coal mine.

[0041] Please refer to Figure 7 As shown, the tips of the first toggle lever 59 and the second toggle lever 512 both face the third guide groove 543. The guide post 56 at the end of the guide rod 55 is slidably connected to the inside of the third guide groove 543, and the end of the adjustment head 51 is arranged obliquely downward. The guide post 56 at the end of the guide rod 55 is inserted into the third guide groove 543, so that the adjustment head 51 and the tripod plate 53 rotate around the fixed shaft 52, thereby tilting the adjustment head 51 and the tripod plate 53 downward. At this time, the coal gangue on the conveyor belt 3 is transported to the lower position of the goaf of the coal mine.

[0042] It should be noted that the components of the telescopic belt conveyor include the conveyor main body 1, the outer fixed frame 2, the conveyor belt 3, and the inner telescopic frame 4. The inner telescopic frame 4 is telescoped along the inside of the outer fixed frame 2, so that the inner telescopic frame 4 extends to the specified position. At the same time as the inner telescopic frame 4 extends, the adjustment head 51 can be extended. During this period, the guide post 56 at the end of the guide rod 55 cooperates with the inside of the guide groove 54 to adjust the angle between the adjustment head 51 and the conveyor main body 1. Specifically, the driving motor 57 drives the spur gear 58 to rotate. The spur gear 58 meshes with the incomplete gear 510 of the first toggle lever 59. The first toggle lever 59 rotates synchronously with the incomplete gear 510. At this time, the first toggle lever 59 drives the second toggle lever 512 to rotate through the four-bar mechanism 511, so as to use the double-rocker mechanism to rotate the first toggle lever 59 and the second toggle lever 512 differently, so that the guide post 56 enters the inside of the specified guide groove 54 along the gap between the first toggle lever 59 and the second toggle lever 512. When the guide post 56 enters the first guide groove 541, the adjustment head 51 and the tripod plate 53 can be lifted upward, and the coal gangue on the conveyor belt 3 is transported to the upper position of the goaf of the coal mine. When the guide post 56 enters the second guide groove 542, the adjustment head 51 and the tripod plate 53 can be horizontally moved, and the coal gangue on the conveyor belt 3 is transported to the middle position of the goaf of the coal mine. When the guide post 56 enters the third guide groove 543, the adjustment head 51 and the tripod plate 53 can be tilted downward, and the coal gangue on the conveyor belt 3 is transported to the lower position of the goaf of the coal mine. The angle of the adjustment head 51 and the tripod plate 53 can be adjusted by using the guide post 56 located in different guide grooves 54.

[0043] Please refer to Figure 2 and Figure 8 As shown, a crushing structure 6 is provided at the end of the inner telescopic frame 4. The crushing structure 6 includes two connecting plates 61 which are respectively arranged on both sides of the end of the inner telescopic frame 4. The two connecting plates 61 are integrally manufactured with the inner telescopic frame 4. Rotating shafts 62 are provided between the tops and the bottoms of the two connecting plates 61. The connecting plates 61 can clamp the two rotating shafts 62 and the rotating cylinder 63. A rotating cylinder 63 is provided at the rotating shaft 62 located at the top of the connecting plate 61. A ring of fixing strips 64 is welded in the middle of the rotating cylinder 63. A row of crushing teeth 65 is welded to the edge of each fixing strip 64. The annular fixing strips 64 are in contact with the conveyor belt 3. The contact between the fixing strips 64 and the conveyor belt 3 enables each fixing strip 64 to rotate around the upper rotating shaft 62, and the gangue can pass through the gaps between the fixing strips 64. The fixing strips 64 can also limit the upper surface of the conveyor belt 3, so as to prevent the conveyor belt 3 from separating from the adjusting head 51 and the inner telescopic frame 4 after the angles of the adjusting head 51 and the tripod plate 53 are adjusted.

[0044] Please refer to Figure 8 and Figure 9 As shown, the rotating shaft 62 at the bottom of the inner telescopic frame 4 is in contact with the lower surface of the conveyor belt 3, so as to use the rotating shaft 62 at the bottom of the inner telescopic frame 4 to limit the lower surface of the conveyor belt 3. The two ends of the rotating shaft 62 at the top of the inner telescopic frame 4 are rotatably connected to the connecting plate 61. The rotation radius of the fixing strip 64 is equal to the distance between the conveyor belt 3 and the top rotating shaft 62, ensuring that the conveyor belt 3 is always in contact with the outside of the annular fixing strip 64. The upper surface and the lower surface of the conveyor belt 3 can both be limited by the lower rotating shaft 62 and the fixing strip 64.

[0045] Please refer to Figure 8 and Figure 10As shown in the figure, reserved slots 67 are provided at both ends of the inner telescopic frame 4. A second fixing bar 66 is arranged between the two reserved slots 67. There is a gap between the second fixing bar 66 and the upper surface of the conveyor belt 3. At both ends of the second fixing bar 66, a first floating rod 69 and a second floating rod 611 are welded. The first floating rod 69 and the second floating rod 611 are both located inside the reserved slot 67. The guiding groove 54 contacts the conveyor belt 3 to drive the first fixing bar 64 to rotate around the rotating shaft 62. On the outside of the two first floating rods 69 and on both sides of the second fixing bar 66, telescopic springs 610 are sleeved. A row of crushing grooves 68 are provided at the edge of the second fixing bar 66 near the crushing teeth 65. The crushing teeth 65 and the crushing grooves 68 are used to crush the coal gangue. When the rotating first fixing bar 64 rotates around the upper rotating shaft 62, the first fixing bar 64 contacts the second fixing bar 66, so that the first fixing bar 64 and the second fixing bar 66 approach or move away from each other. The crushing teeth 65 of the first fixing bar 64 and the crushing grooves 68 of the second fixing bar 66 crush the coal gangue. And by using the floating first floating rod 69 and the second floating rod 611 to float along the inside of the reserved slot 67, the breakage of the second fixing bar 66 is avoided, and it is also convenient for the first fixing bar 64 to pass smoothly from the second fixing bar 66.

[0046] Please refer to Figure 10 As shown in the figure, both the first floating rod 69 and the second floating rod 611 are movably connected to the inside of the reserved slot 67. The lengths of the first floating rod 69 and the second floating rod 611 can limit the second fixing bar 66 inside the reserved slot 67, so that the second fixing bar 66 floats inside the reserved slot 67. The crushing teeth 65 approach or move away from the crushing grooves 68. The crushing teeth 65 are slidably connected to the side walls of the crushing grooves 68. The crushing teeth 65 of the first fixing bar 64 and the crushing grooves 68 of the second fixing bar 66 can crush the coal gangue on the surface of the conveyor belt 3.

[0047] It should be noted that when the guide post 56 moves inside the guide groove 54, the adjustment head 51 and the tripod plate 53 deflect, so that the conveyor belt 3 is separated from the surfaces of both the adjustment head 51 and the inner telescopic frame 4. At this time, the lower surface of the conveyor belt 3 can be restricted by the rotating shaft 62 at the lower end, and the upper surface of the conveyor belt 3 can be restricted by the rotating cylinder 63 and its length. Moreover, the conveyor belt 3 is in contact with the first fixed strip 64, and the conveyor belt 3 drives the first fixed strip 64 to rotate. Thus, the coal gangue passes through the gaps between the first fixed strips 64 and enters the end of the adjustment head 51. During this period, the larger coal gangue can be crushed by the first fixed strip 64 and the second fixed strip 66. Specifically, as the conveyor belt 3 moves the coal gangue to the second fixed strip 66, the rotating first fixed strip 64 will approach the second fixed strip 66. For some relatively large coal gangue located at the second fixed strip 66, the coal gangue at the second fixed strip 66 can be crushed by the rotating first fixed strip 64. Thus, the larger coal gangue can be broken, and the smaller crushed stones are discharged from the gaps below the second fixed strip 66, so that the smaller coal gangue is conveyed to the end of the adjustment head 51 by the conveyor belt 3.

[0048] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An energy-saving crushing and conveying device for filling coal gangue in a coal mining subsidence area, comprising a conveyor main body (1), an outer fixed frame (2) and an inner telescopic frame (4). The outer fixed frame (2) is arranged at the top of the conveyor main body (1), and the inner telescopic frame (4) is arranged inside the outer fixed frame (2). Both sides of the inner telescopic frame (4) are slidably connected to the inner wall of the outer fixed frame (2). A conveyor belt (3) is sleeved between the outer fixed frame (2) and the inner telescopic frame (4). It is characterized in that, The end of the inner telescopic frame (4) is provided with an angle adjustment structure (5), and the angle adjustment structure (5) includes an adjustment head (51), the adjustment head (51) is provided at the end of the inner telescopic frame (4), and a fixed shaft (52) is provided at the intersection of the inner telescopic frame (4) and the adjustment head (51), and the side walls of the adjustment head (51) are welded with tripods (53), the interior of the tripods (53) is provided with guide grooves (54), the upper edge and lower edge of the tip of the tripod (53) are respectively provided with a toggle rod 2 (512) and a toggle rod 1 (59), and the edge of the toggle rod 1 (59) is provided with an incomplete gear (510), and the tip edge of the tripod (53) is provided with a drive motor (57), and the drive motor (57) is provided with a drive motor (57) ) is provided with a spur gear (58) at the end thereof, the axis of the spur gear (58) is rotatably connected to the tripod (53), the spur gear (58) is meshed with the incomplete gear (510) of the toggle rod (59), the toggle rod (59) and the toggle rod (512) are connected via a four-bar mechanism (511), the toggle rod (59) and the toggle rod (512) rotate synchronously, guide rods (55) are provided at both ends of the outer fixed frame (2) and on both sides of the inner telescopic frame (4), guide posts (56) are provided at the ends of the two guide rods (55), and the guide posts (56) are located inside the guide groove (54), and the position of the guide posts (56) in cooperation with the guide groove (54) is used to determine the inclination angle of the adjustment head (51); The four-bar mechanism (511) constitutes a double rocker mechanism, and the four-bar mechanism (511) includes a connecting rod 1 that rotates synchronously with the toggle rod 1 (59), a connecting rod 2 that rotates synchronously with the toggle rod 2 (512), and an intermediate rod connected to the connecting rod 1 and the connecting rod 2, and the two ends of the intermediate rod are respectively connected to the connecting rod 1 and the connecting rod 2 for rotation. The four-bar mechanism (511) is used to control the direction of the floating rod 1 (69) and the toggle rod 2 (512); The guide groove (54) includes a guide groove 1 (541), a guide groove 2 (542) and a guide groove 3 (543), wherein the guide groove 1 (541), the guide groove 2 (542) and the guide groove 3 (543) are arranged in a "character" shape, and the toggle rod 1 (59) and the toggle rod 2 (512) are arranged in an "eight" shape, so that the end of the adjustment head (51) and the end of the inner telescopic frame (4) are rotatably connected, and the rotation center of the end of the tripod (53) is aligned with the axis of the fixed shaft (52); A crushing structure (6) is provided at the end of the inner telescopic frame (4). The crushing structure (6) includes two connecting plates (61), which are respectively arranged on both sides of the end of the inner telescopic frame (4). The two connecting plates (61) are integrally manufactured with the inner telescopic frame (4). Rotating shafts (62) are provided between the tops and bottoms of the two connecting plates (61). A rotating cylinder (63) is provided at the rotating shaft (62) at the top of the connecting plate (61). A ring of fixing strips one (64) is welded in the middle of the rotating cylinder (63). A row of crushing teeth (65) is welded to the edge of each fixing strip one (64). The annular fixing strips one (64) are in contact with the conveyor belt (3).

2. The energy-saving crushing and conveying device for coal gangue filling in coal mining subsidence areas according to claim 1, characterized in that, The tips of the first shifting rod (59) and the second shifting rod (512) both face the first guide groove (541). The guide post (56) at the end of the guide rod (55) is slidably connected to the inside of the first guide groove (541), and the end of the adjustment head (51) is arranged obliquely upward.

3. An energy-saving crushing and conveying device for filling coal gangue in coal mining subsidence areas according to claim 1, characterized in that, The tips of the first shifting rod (59) and the second shifting rod (512) both face the second guide groove (542). The guide post (56) at the end of the guide rod (55) is slidably connected to the inside of the second guide groove (542), and the end of the adjustment head (51) is arranged horizontally.

4. An energy-saving crushing and conveying device for coal gangue filling in coal mining subsidence areas according to claim 1, characterized in that, The tips of the first shifting rod (59) and the second shifting rod (512) both face the third guide groove (543). The guide post (56) at the end of the guide rod (55) is slidably connected to the inside of the third guide groove (543), and the end of the adjustment head (51) is arranged obliquely downward.

5. The energy-saving crushing and conveying device for coal gangue filling in coal mining subsidence areas according to claim 4, wherein, The rotating shaft (62) at the bottom of the inner telescopic frame (4) is in contact with the lower surface of the conveyor belt (3). The two ends of the rotating shaft (62) at the top of the inner telescopic frame (4) are rotatably connected to the connecting plate (61). The rotation radius of the fixing strip one (64) is equal to the distance between the conveyor belt (3) and the top rotating shaft (62).

6. The energy-saving crushing and conveying device for coal gangue filling in coal mining subsidence areas according to claim 5, wherein Reserved slots (67) are provided at both ends of the two sides of the inner telescopic frame (4). A fixing strip two (66) is provided between the two reserved slots (67). There is a gap between the fixing strip two (66) and the upper surface of the conveyor belt (3). A first floating rod (69) and a second floating rod (611) are welded to both ends of the fixing strip two (66). The first floating rod (69) and the second floating rod (611) are both located inside the reserved slot (67). Telescopic springs (610) are sleeved outside the two first floating rods (69) and on both sides of the fixing strip two (66). A row of crushing grooves (68) is provided at the edge of the fixing strip two (66) near the crushing teeth (65). The crushing teeth (65) and the crushing grooves (68) are used to crush coal gangue.

7. An energy-saving crushing and conveying device for coal gangue filling in coal mining subsidence areas according to claim 6, characterized in that, Both the first floating rod (69) and the second floating rod (611) are movably connected to the inside of the reserved slot (67). The crushing teeth (65) are close to or away from the crushing grooves (68), and the crushing teeth (65) are slidably connected to the side walls of the crushing grooves (68).

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