Tail roller frame of self-moving tail and using method

Abstract

The invention belongs to the technical field of machine tail rollers, particularly relates to a machine tail roller frame of a self-moving machine tail and a using method, and provides the following scheme aiming at the problems that the existing machine tail roller frame and a roller are tedious in disassembly step and the roller needs to be disassembled from the roller frame and the self-moving machine tail during inspection: the machine tail roller frame comprises a tail end frame and a machine tail roller, a plurality of tail rollers are fixed to the tail end frame through bolts, roller shafts are fixed to the two ends of each tail roller, a plurality of tail roller frames are fixed to the top of the tail end frame through bolts, the tail rollers are located in the tail roller frames, and each tail roller frame is composed of two roller frames. And after the tail roller is used for a long time, the rubber wheel is attached to the side end of the tail roller, so that the moving block and the small camera can be driven to do reciprocating linear movement, and therefore, when the tail roller operates normally, comprehensive inspection of the outer wall of the tail roller can be synchronously completed.

Description

Technical Field

[0001] The present invention relates to the technical field of tail drums, and particularly to a tail drum frame of a self - moving tail and a using method thereof. Background Art

[0002] Self - moving tails are usually applied to the belt conveyor system in the mine tunneling face. After the tunneling machine has continuously tunneled a certain distance, it can move forward following the advancement of the tunneling machine, thus reducing the preparation time during the process alternation and improving the management and operation efficiency of the entire tunneling face. As an important part of the self - moving tail, the rationality of the design and the compactness of the structure of the tail drum frame are crucial for the operation stability and reliability of the entire belt conveyor system.

[0003] The existing tail drum frames still have the following disadvantages: 1. When overhauling and maintaining the drum, it needs to be removed from the drum frame. In the existing technology, the disassembly steps between the tail drum frame and the drum are relatively cumbersome, reducing the disassembly efficiency; 2. To ensure the service life of the drum, it is necessary to regularly check the wear condition of the drum. If obvious wear or cracks are found on the surface of the drum, it should be repaired or replaced in time. In the existing technology, the inspection of the drum generally requires removing the drum from the drum frame and the self - moving tail, which undoubtedly increases the work difficulty and affects the subsequent efficiency of mine tunneling.

[0004] In view of the above problems, the present invention document proposes a tail drum frame of a self - moving tail and a using method thereof. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages that the disassembly steps between the existing tail drum frame and the drum are relatively cumbersome, and the drum needs to be removed from the drum frame and the self - moving tail during inspection, and to propose a tail drum frame of a self - moving tail and a using method thereof.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: A tail drum frame of a self - moving tail, including a tail end frame and a tail drum. Both ends of the tail drum are fixed with drum shafts. A plurality of tail drum frames are fixed to the top of the tail end frame by bolts. The tail drum is located within the tail drum frames. The tail drum frame is composed of two drum frames. Placement grooves are provided at the tops of both drum frames, and one ends of the two drum shafts far from the tail drum respectively penetrate through the corresponding placement grooves; Two groups of limiting structures are respectively arranged within the two drum frames for preliminarily limiting the drum shafts penetrating through the placement grooves; Two groups of fixing structures are respectively arranged on the sides of the two drum frames away from each other for limiting the two drum shafts; It further includes a rotating column rotating between two drum frames. A cleaning brush for cleaning the surface of the tail drum is fixed on one side of the rotating column, and a small camera for inspecting the surface of the tail drum is provided on the side of the rotating column away from the cleaning brush. An inspection structure is arranged on one side of the rotating column and is used to drive the small camera to reciprocate to comprehensively inspect the surface of the tail drum. A switching structure is arranged at one end of the rotating column and is used to control the rotating column to adjust the orientations of the cleaning brush and the small camera, thereby switching the inspection and cleaning operations of the tail drum.

[0007] In a possible design, the limiting structure includes a first semi-circular bearing fixedly embedded in the inner wall of the bottom of the placement groove. A pressing block is slidably fitted in the placement groove, and the pressing block is detachably and fixedly connected to the drum frame through a bolt. A second semi-circular bearing is fixed to the bottom of the pressing block, and the first semi-circular bearing and the second semi-circular bearing cooperate to clamp the drum shaft to increase the stability of the rotation of the drum shaft. Insert the pressing block into the placement groove and fix the pressing block to the drum frame through a bolt. The first semi-circular bearing and the second semi-circular bearing cooperate to initially clamp the drum shaft to ensure the stability of the rotation of the drum shaft in the later stage.

[0008] In a possible design, the fixing structure includes an outer sleeve arranged on the side of the drum frame away from the tail drum. A plurality of connecting plates are welded to the outer wall of the outer sleeve, and the plurality of connecting plates are detachably and fixedly connected to the drum frame through bolts. An inner sleeve is rotatably connected to the inner wall of the side of the outer sleeve away from the tail drum. A ball bearing is arranged on the outer wall of the inner sleeve, and the inner ring of the ball bearing is fixedly connected to the outer wall of the inner sleeve, and the outer ring of the ball bearing is fixedly connected to the inner wall of the outer sleeve. A first circular groove is arranged on the side of the outer sleeve close to the tail drum. An end cover is slidably fitted in the first circular groove, and the end cover is located between the inner sleeve and the drum frame and is used to seal the inner sleeve and the outer sleeve. One end of the drum shaft away from the tail drum penetrates through the end cover and slidably extends into the inner sleeve. An oil inlet for injecting lubricating oil is arranged at the top of the outer sleeve. A sealing structure is arranged between the outer sleeve and the end cover and is used to move the end cover towards the inner sleeve, thereby increasing the sealing performance between the end cover and the inner sleeve and the outer sleeve. Put the end cover, the inner sleeve and the outer sleeve on the outer wall of the drum shaft in sequence from one end of the drum shaft, and the cooperation between the limiting groove and the limiting block can limit the positions of the outer sleeve and the end cover, and ensure that the sliding groove is aligned with the trapezoidal groove. Then fix one side of the outer sleeve to the drum frame through a bolt. In addition, the end cover is made to closely adhere to one end of the inner sleeve and the inner wall of one side of the first circular groove through the sealing structure to ensure the sealing performance between the end cover and the inner sleeve and the outer sleeve.

[0009] In a possible design, the closed structure includes a plurality of trapezoidal grooves provided on the outer wall of the end cover. A plurality of sliding grooves communicating with the first circular groove are provided in the outer sleeve, and the sliding grooves correspond to the trapezoidal grooves in position. A pin rod is slidably connected in each of the plurality of sliding grooves. The bottom end of the pin rod is arc-shaped. The bottom ends of the plurality of pin rods all extend into the corresponding trapezoidal grooves and cooperate with the inclined surfaces of the trapezoidal grooves to drive the end cover to move in the direction of the inner sleeve. A threaded rod is fixed to one end of each of the plurality of pin rods away from the end cover. One end of each of the plurality of threaded rods slidably extends to the outside of the outer sleeve. A nut is threadedly sleeved on the outer wall of each of the plurality of threaded rods, and the nut rotates on the outer wall of the outer sleeve. A bevel gear is fixedly sleeved on the outer wall of each of the plurality of nuts. An annular bevel gear and a rotating ring are rotatably sleeved on the outer wall of the outer sleeve, and the annular bevel gear meshes with the plurality of bevel gears to synchronously drive the plurality of nuts to rotate. One side of the rotating ring close to the threaded rod is fixedly connected to the annular bevel gear. A plurality of toggle levers are fixed to one side of the rotating ring away from the annular bevel gear for driving the rotating ring to rotate; the rotating ring and the annular bevel gear are driven to rotate by the toggle lever. The annular bevel gear drives the nut to rotate through the bevel gear. The nut drives the threaded rod and the pin rod to move downward. The pin rod extends from the sliding groove to the trapezoidal groove, and the bottom end of the pin rod is arc-shaped. At this time, the bottom end of the pin rod cooperates with the inclined surface of the trapezoidal groove to drive the end cover to move in the direction of the inner sleeve. When moving, the sealing performance between the end cover and the inner sleeve and the outer sleeve can be increased through the sealing ring.

[0010] In a possible design, the inspection structure includes two bases fixed to the side of the rotating column close to the tail roller. The same reciprocating lead screw is rotatably connected between the two bases. A moving block slidably connected to the outer wall of the rotating column is threadedly sleeved on the outer wall of the reciprocating lead screw. And a small camera is fixed to the end of the moving block away from the rotating column. The cooperation between the moving block and the reciprocating lead screw is used to drive the small camera to reciprocate. One side of the rotating column close to the tail roller is slidably connected with a moving frame. And one end of the reciprocating lead screw penetrates through the moving frame. A worm gear is rotatably connected to one side of the moving frame. The worm gear is slidably sleeved on the outer wall of the reciprocating lead screw through a chute and a slider. A worm is rotatably connected to the side of the moving frame close to the worm gear through a substrate. And the worm meshes with the worm gear. The worm drives the reciprocating lead screw to rotate through the worm gear. One end of the worm is fixed with a rubber wheel. And the rubber wheel cooperates with one end of the tail roller. The friction between the rubber wheel and the end face of the tail roller drives the rubber wheel to rotate. A screw rod is rotatably connected to the side of the moving frame away from the worm. One end of the screw rod threadedly penetrates through the adjacent base. The cooperation between the screw rod and the base is used to synchronously drive the moving frame, the worm and the worm gear to move. An arc-shaped relief groove is provided in one of the roller frames. The end of the screw rod away from the moving frame penetrates through the arc-shaped relief groove. The arc-shaped relief groove can provide relief for the screw rod. Rotate the screw rod. Through the cooperation between the screw rod and the base, drive the moving frame, the worm and the worm gear to slide as a whole until the rubber wheel is closely attached to the side end of the tail roller. Through the friction between the tail roller and the rubber wheel, drive the worm to rotate. The worm and the worm gear cooperate to drive the reciprocating lead screw to rotate. The reciprocating lead screw drives the small camera to reciprocate linearly through the moving block. Thus, the outer wall of the tail roller can be comprehensively inspected, and the minerals can continue to be conveyed during the inspection.

[0011] In a possible design, the switching structure includes a rotating shaft fixed to one end of the rotating column. One end of the rotating shaft rotatably penetrates through the roller frame adjacent to the moving frame. A direction positioning groove is provided on the side of the roller frame away from the moving frame. A square block is provided in the direction positioning groove. And the direction positioning groove is used to limit the square block. A second circular groove is provided at the end of the rotating shaft away from the rotating column. A tension spring is fixed to the inner wall of one side of the second circular groove. A sliding rod slidably connected in the second circular groove and fixed to one end of the tension spring is provided. And one end of the sliding rod is fixed to one side of the square block. The cooperation between the sliding rod and the square block is used to drive the rotating column to rotate. Pull the square block outwards to release the clamping between the square block and the direction positioning groove. Then drive the sliding rod and the rotating column to rotate 180° through the square block, so that the cleaning brush faces the tail roller and touches the outer wall of the tail roller. When the tail roller is running, clean the outer wall of the tail roller through the cleaning brush to avoid abrasion of the outer wall of the tail roller caused by dirt on the outer wall of the tail roller.

[0012] In a possible design, a plurality of limiting grooves are provided in the first circular groove, and a plurality of limiting blocks are fixed to the outer wall of the end cover. The limiting grooves and the limiting blocks are in sliding fit, which is used to limit the positions of the end cover and the outer sleeve. A key block is fixed to the inner wall of the inner sleeve, and a key groove is provided on the outer wall of the roller shaft. The key block and the key groove are in sliding fit, which is used to enable the roller shaft to drive the key block to rotate, thereby increasing the rotational stability of the roller shaft. When the end cover is inserted into the first circular groove, the trapezoidal groove and the sliding groove can be aligned through the limitation of the limiting groove and the limiting block, which is convenient for the later pin rod to extend into the trapezoidal groove and drive the end cover to move.

[0013] In a possible design, a sealing ring is fixed to the side of the end cover close to the inner sleeve, which is used to increase the sealing performance between the end cover, the inner sleeve and the first circular groove.

[0014] In a possible design, lifting grooves are provided on the sides of the two roller frames close to each other. A lifting seat is slidably connected in the lifting groove. A lead screw is longitudinally rotatably connected in the lifting groove. The top end of the lead screw threadedly penetrates through the lifting seat, and the top end of the lead screw rotatably extends above the roller frame. A tapered wheel is rotatably connected to the side of the lifting seat close to the tail roller, which is used to adjust the conveyor belt on the outer wall of the tail roller. When the conveyor belt driven on the surface of the tail roller is offset, by rotating the corresponding lead screw, the lead screw drives the tapered wheel to move upward through the lifting seat, and the inclined surface of the tapered wheel contacts the conveyor belt, which can guide the conveyor belt to move towards the middle, thereby being able to adjust the position of the conveyor belt.

[0015] In this application, a method for using the tail roller frame of a self-propelled tail includes the following steps: S1. When installing the tail roller and the roller shaft on the roller frame, place the roller shaft in the placement groove, fix it with the pressing block and bolts, and cooperate with the first semi-circular bearing and the second semi-circular bearing to ensure stable rotation; S2. Install the end cover, the inner sleeve and the outer sleeve on the roller shaft in sequence, position them by using the limiting groove and the limiting block, and fix the outer sleeve with bolts; drive the bevel gear ring and the bevel gear to rotate by using the lever, so that the pin rod enters the trapezoidal groove, drive the end cover to move and seal, and finally inject lubricating oil; this process is reversible and convenient for disassembly; S3. During operation, drive the moving frame to slide by adjusting the screw rod, so that the rubber wheel closely adheres to the tail roller, drive the worm and the worm gear to rotate by using the frictional force, and then drive the reciprocating lead screw to drive the small camera to move reciprocally to achieve a comprehensive inspection without affecting the mineral transportation; S4. During cleaning, pull the square block to release the clamping, rotate the sliding rod and the rotating column, so that the cleaning brush contacts the outer wall of the tail roller, and clean it as the roller runs to prevent wear; S5. When the conveyor belt is offset, rotate the lead screw to lift the tapered wheel, and use the inclined surface of the tapered wheel to guide the conveyor belt to the middle to adjust the position.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, an inner sleeve is rotatably connected to the inner wall of one side of the outer sleeve away from the tail roller. A ball bearing is provided on the outer wall of the inner sleeve. A first circular groove is provided on the side of the outer sleeve close to the tail roller. An end cover is slidably fitted in the first circular groove. One end of the roller shaft away from the tail roller penetrates through the end cover and slidably extends into the inner sleeve. A sealing structure is provided between the outer sleeve and the end cover; the end cover, the inner sleeve and the outer sleeve are sequentially sleeved on the outer wall of the roller shaft from one end of the roller shaft, and the outer sleeve is fixedly connected to one side of the roller frame by bolts. In addition, the end cover is tightly attached to one end of the inner sleeve and the inner wall of one side of the first circular groove through the sealing structure to ensure the sealing between the end cover, the inner sleeve and the outer sleeve; In the present invention, the sealing structure includes a plurality of trapezoidal grooves provided on the outer wall of the end cover. A plurality of sliding grooves communicating with the first circular groove are provided in the outer sleeve. A pin rod is slidably connected in each of the plurality of sliding grooves. A threaded rod is fixed to one end of each of the plurality of pin rods away from the end cover. A nut is threadedly sleeved on the outer wall of each of the plurality of threaded rods. A bevel gear ring is rotatably sleeved on the outer wall of the outer sleeve; the bevel gear ring drives the nut to rotate through a bevel gear. The nut drives the pin rod to extend into the trapezoidal groove. The bottom end of the pin rod cooperates with the inclined surface of the trapezoidal groove to drive the end cover to move towards the inner sleeve, so as to further increase the sealing between the end cover, the inner sleeve and the outer sleeve; In the present invention, a moving block is threadedly sleeved on the outer wall of the reciprocating lead screw. A small camera is fixed to one end of the moving block away from the rotating column. A moving frame is slidably connected to one side of the rotating column. A worm wheel and a worm that mesh with each other are rotatably connected to one side of the moving frame. The worm wheel is slidably sleeved on the outer wall of the reciprocating lead screw. A rubber wheel is fixed to one end of the worm. A screw rod that threadedly penetrates through the base is rotatably connected to one side of the moving frame away from the worm; the moving frame is driven to slide by the screw rod until the rubber wheel is tightly attached to the side end of the tail roller. The tail roller drives the worm to rotate through the rubber wheel. The worm drives the reciprocating lead screw to rotate, thereby driving the small camera to move linearly back and forth to comprehensively inspect the outer wall of the tail roller, and the minerals can continue to be conveyed during the inspection; In the present invention, the disassembly operation of the tail roller and the roller frame can be easily completed, which greatly facilitates the later maintenance and repair of the tail roller. And after the tail roller is used for a long time, the rubber wheel is attached to the side end of the tail roller to drive the moving block and the small camera to move linearly back and forth. Therefore, when the tail roller is running normally, the comprehensive inspection of the outer wall of the tail roller can be completed synchronously, which greatly improves the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a tail roller frame of a self-propelled tail for Embodiment 1 of the present invention; Figure 2A three-dimensional structural schematic diagram of the cooperation between the tail roller and the roller frame of the tail roller frame of the self-propelled tailstock provided in Embodiment 1 of the present invention; Figure 3 A three-dimensional exploded structural schematic diagram of the roller frame, roller shaft and pressing block of the tail roller frame of the self-propelled tailstock provided in Embodiment 1 of the present invention; Figure 4 A three-dimensional structural schematic diagram of the cooperation between the outer sleeve, end cover and roller shaft of the tail roller frame of the self-propelled tailstock provided in Embodiment 1 of the present invention; Figure 5 A three-dimensional exploded structural schematic diagram of the outer sleeve, key block and end cover of the tail roller frame of the self-propelled tailstock provided in Embodiment 1 of the present invention; Figure 6 A sectional structural schematic diagram of the outer sleeve, inner sleeve and end cover of the tail roller frame of the self-propelled tailstock provided in Embodiment 1 of the present invention; Figure 7 A three-dimensional sectional structural schematic diagram of the outer sleeve and end cover of the tail roller frame of the self-propelled tailstock provided in Embodiment 1 of the present invention; Figure 8 A partial three-dimensional structural schematic diagram of the roller frame, rotating column and reciprocating lead screw of the tail roller frame of the self-propelled tailstock provided in Embodiment 1 of the present invention; Figure 9 A three-dimensional exploded structural schematic diagram of the moving frame, moving block and worm of the tail roller frame of the self-propelled tailstock provided in Embodiment 1 of the present invention; Figure 10 A three-dimensional exploded structural schematic diagram of the rotating shaft, square block and roller frame of the tail roller frame of the self-propelled tailstock provided in Embodiment 1 of the present invention; Figure 11 A three-dimensional exploded structural schematic diagram of the roller frame, lifting seat and tapered wheel of the tail roller frame of the self-propelled tailstock provided in Embodiment 2 of the present invention.

[0018] In the figure: 1, tail frame; 2, tail drum; 3, drum shaft; 4, drum frame; 5, placement groove; 6, first semicircular bearing; 7, second semicircular bearing; 8, pressure block; 9, outer sleeve; 10, connecting plate; 11, ball bearing; 12, inner sleeve; 13, keyway; 14, key block; 15, end cover; 16, sealing ring; 17, first circular groove; 18, limit groove; 19, limit block; 20, trapezoidal groove; 21, sliding groove; 22, pin rod; 23, threaded rod; 24, nut; 25, bevel gear; 26, bevel gear ring ; 27. Rotating ring; 28. Oil inlet; 29. Rotating column; 30. Cleaning brush; 31. Base; 32. Reciprocating screw; 33. Moving block; 34. Small camera; 35. Moving frame; 36. Worm; 37. Rubber wheel; 38. Worm wheel; 39. Screw; 40. Arc-shaped clearance groove; 41. Direction positioning groove; 42. Rotating shaft; 43. Second circular groove; 44. Tension spring; 45. Sliding rod; 46. Block; 47. Lifting groove; 48. Lifting seat; 49. Screw; 50. Conical wheel; 51. Push rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example 1: Reference Figures 1 - 3 A roller frame relates to the technical field of tail rollers. The roller frame is mainly composed of a tail end frame 1 and a tail roller 2. A roller shaft 3 is fixed at both ends of the tail roller 2. A plurality of tail roller frames are fixed to the top of the tail end frame 1 by bolts. These tail roller frames are used to support and accommodate the tail roller 2. Specifically, each tail roller frame is composed of two roller frames 4. The tops of the two roller frames 4 are provided with placement grooves 5, and the ends of the two roller shafts 3 away from the tail roller 2 respectively penetrate the corresponding placement grooves 5.

[0021] Reference Figure 2 and Figure 3 In order to achieve stable rotation of the roller shaft 3 in the placement groove 5, two sets of limiting structures are provided. Each set of limiting structures includes a first semicircular bearing 6 fixedly embedded in the inner wall of the bottom of the placement groove 5, and a pressing block 8 slidably fitted in the placement groove 5. The pressing block 8 is detachably fixedly connected to the roller frame 4 by bolts, and a second semicircular bearing 7 is fixed at the bottom thereof. When the pressing block 8 is inserted into the placement groove 5 and fixed by bolts, the first semicircular bearing 6 and the second semicircular bearing 7 cooperate to clamp the roller shaft 3, thereby increasing the stability of the rotation of the roller shaft 3.

[0022] Reference Figure 2 and Figures 3 - 6, In addition, to further define the drum shaft 3, two sets of fixing structures are provided. Each set of fixing structures includes an outer sleeve 9 arranged on the side of the drum frame 4 away from the tail drum 2. A plurality of connecting plates 10 are welded to the outer wall of the outer sleeve 9, and these connecting plates 10 are detachably and fixedly connected to the drum frame 4 by bolts. The inner wall of the outer sleeve 9 on the side away from the tail drum 2 is rotatably connected to an inner sleeve 12. A ball bearing 11 is provided on the outer wall of the inner sleeve 12. The inner ring of the ball bearing 11 is fixedly connected to the outer wall of the inner sleeve 12, and the outer ring is fixedly connected to the inner wall of the outer sleeve 9. A first circular groove 17 is provided on the side of the outer sleeve 9 close to the tail drum 2. An end cover 15 is slidably fitted in the first circular groove 17. The end cover 15 is located between the inner sleeve 12 and the drum frame 4 and is used to enclose the inner sleeve 12 and the outer sleeve 9. One end of the drum shaft 3 away from the tail drum 2 penetrates through the end cover 15 and slidably extends into the inner sleeve 12. To facilitate lubrication, an oil inlet 28 for injecting lubricating oil is also provided at the top of the outer sleeve 9.

[0023] Referring to Figure 5 and Figure 7 , a first circular groove 17 is provided inside the outer sleeve 9. A plurality of limiting grooves 18 are designed in the first circular groove 17, and these limiting grooves 18 are distributed along the axial direction of the first circular groove 17. At the same time, a plurality of limiting blocks 19 are fixed on the outer wall of the end cover 15, and these limiting blocks 19 are slidably fitted with the limiting grooves 18. When the end cover 15 is inserted into the first circular groove 17, the limiting blocks 19 slide along the limiting grooves 18, so that the relative position between the end cover 15 and the outer sleeve 9 can be defined, preventing the end cover 15 from rotating or moving randomly in the first circular groove 17.

[0024] Referring to Figure 5 and Figure 6 , further, a key block 14 is fixed on the inner wall of the inner sleeve 12, and a key groove 13 is provided on the outer wall of the drum shaft 3. The key block 14 is slidably fitted with the key groove 13. This structure enables the drum shaft 3 to drive the inner sleeve 12 and the tail drum 2 fixedly connected thereto to rotate, and at the same time increases the rotational stability of the drum shaft 3.

[0025] Referring to Figures 5 - 7 , to ensure the sealing performance between the end cover 15 and the inner sleeve 12 and the outer sleeve 9, a sealing structure is also provided. The sealing structure includes a plurality of trapezoidal grooves 20 provided on the outer wall of the end cover 15. These trapezoidal grooves 20 are designed to cooperate with the pin rods 22 to drive the movement of the end cover 15. Sliding grooves 21 communicating with the first circular groove 17 are provided inside the outer sleeve 9, and these sliding grooves 21 correspond to the positions of the trapezoidal grooves 20. A pin rod 22 is slidably connected in the sliding grooves 21. The bottom end of the pin rod 22 is designed to be arc-shaped, such a design enables the pin rod 22 to smoothly enter the trapezoidal grooves 20 and cooperate with the inclined surfaces of the trapezoidal grooves 20, thereby driving the end cover 15 to move towards the inner sleeve 12.

[0026] Referring toFigure 7 , a threaded rod 23 is fixed to one end of the pin rod 22 away from the end cover 15, and one end of these threaded rods 23 slides and extends to the outside of the outer sleeve 9. On the outer wall of the threaded rod 23, we threadedly sleeved nuts 24, and these nuts 24 rotate on the outer wall of the outer sleeve 9. In order to synchronously drive the rotation of multiple nuts 24, we fixedly sleeved bevel gears 25 on the outer walls of the nuts 24, and rotatably sleeved a bevel gear ring 26 on the outer wall of the outer sleeve 9. The bevel gear ring 26 meshes with multiple bevel gears 25, thus achieving the effect of synchronous drive.

[0027] Refer to Figure 7 , in addition, we also provided a rotating ring 27, and one side of it close to the threaded rod 23 is fixedly connected to the bevel gear ring 26. Multiple shifting rods 51 are fixed to the side of the rotating ring 27 away from the bevel gear ring 26, and these shifting rods 51 are used to drive the rotation of the rotating ring 27.

[0028] Specifically, when it is necessary to drive the end cover 15 to move, we only need to drive the rotating ring 27 and the bevel gear ring 26 to rotate through the shifting rod 51, and the bevel gear ring 26 then drives the nut 24 to rotate through the bevel gear 25. The rotation of the nut 24 will drive the threaded rod 23 and the pin rod 22 to move downward, and the pin rod 22 extends from the sliding groove 21 into the trapezoidal groove 20 and cooperates with the inclined surface of the trapezoidal groove 20, thereby driving the end cover 15 to move in the direction of the inner sleeve 12. During the movement, the sealing ring 16 can increase the sealing performance between the end cover 15 and the inner sleeve 12 and the outer sleeve 9.

[0029] Refer to Figure 5 and Figure 6 , in the design of the end cover 15, the sealing performance between the end cover 15 and the inner sleeve 12 and the first circular groove 17 is also considered. Therefore, a sealing ring 16 is fixed to one side of the end cover 15 close to the inner sleeve 12. The presence of the sealing ring 16 can increase the sealing performance between the end cover 15 and the inner sleeve 12 and the first circular groove 17, preventing dust or moisture from entering the interior and affecting the normal operation of the tail drum 2.

[0030] Refer to Figure 8 and Figure 9, the tail roller frame of the self - moving tail also includes a rotating column 29 that rotates between two roller frames 4. A cleaning brush 30 for cleaning the surface of the tail roller 2 is fixed on one side of the rotating column 29, and a small camera 34 for inspecting the surface of the tail roller 2 is provided on the side far from the cleaning brush 30. In order to facilitate the small camera 34 to comprehensively inspect the surface of the tail roller 2, an inspection structure is also set up. The inspection structure includes a reciprocating lead screw 32 that is rotatably connected between two bases 31 on the side of the rotating column 29 close to the tail roller 2. A moving block 33 that is thread - sleeved on the outer wall of the reciprocating lead screw 32 and slidably connected to the outer wall of the rotating column 29 is provided, and the small camera 34 is fixed at one end of the moving block 33 far from the rotating column 29. The cooperation between the moving block 33 and the reciprocating lead screw 32 can drive the small camera 34 to move reciprocally.

[0031] Refer to Figure 8 and Figure 9 , in addition, we also set up a moving frame 35. It is slidably connected to the side of the rotating column 29 close to the tail roller 2, and one end of the reciprocating lead screw 32 penetrates through the moving frame 35. On one side of the moving frame 35, a worm gear 38 is rotatably connected, and it is slidably sleeved on the outer wall of the reciprocating lead screw 32 through a chute and a slider. On the side of the moving frame 35 close to the worm gear 38, a worm 36 is rotatably connected through a substrate, and the worm 36 meshes with the worm gear 38. A rubber wheel 37 is fixed at one end of the worm 36, and the rubber wheel 37 cooperates with one end of the tail roller 2.

[0032] Specifically, when the tail roller 2 rotates, the frictional force between the rubber wheel 37 and the end face of the tail roller 2 will drive the rubber wheel 37 to rotate, and then drive the worm 36 to rotate. The cooperation between the worm 36 and the worm gear 38 will drive the reciprocating lead screw 32 to rotate, thereby driving the moving block 33 and the small camera 34 to move reciprocally in a straight line to comprehensively inspect the outer wall of the tail roller 2.

[0033] Refer to Figure 8 and Figure 9 , in order to adjust the positional relationship between the rubber wheel 37 and the tail roller 2, we also set up a screw 39. One end of the screw 39 thread - penetrates through the adjacent base 31, and its cooperation with the base 31 is used to synchronously drive the moving frame 35, the worm 36, and the worm gear 38 to move. An arc - shaped relief groove 40 is provided in one of the roller frames 4, and one end of the screw 39 far from the moving frame 35 penetrates through the arc - shaped relief groove 40 to provide a relief for the screw 39.

[0034] Refer to Figure 8 and Figure 10In order to facilitate the switching of the inspection and cleaning operations of the tail drum 2, a switching structure is also provided to control the rotating column 29 to adjust the orientation of the cleaning brush 30 and the small camera 34. The switching structure includes a fixed rotating shaft 42 at one end of the rotating column 29, and one end of the rotating shaft 42 rotates and penetrates the roller frame 4 adjacent to the moving frame 35. On the side of the roller frame 4 away from the moving frame 35, we set a direction positioning groove 41, and set a block 46 in the direction positioning groove 41. The direction positioning groove 41 is used to limit the block 46.

[0035] Reference Figure 10 A second circular groove 43 is provided at one end of the rotating shaft 42 away from the rotating column 29, and a tension spring 44 is fixed on the inner wall of one side of the second circular groove 43. A sliding rod 45 fixedly connected to one end of the tension spring 44 is slidably connected in the second circular groove 43, and one end of the sliding rod 45 is fixedly connected to one side of the block 46.

[0036] Specifically, when the direction of the cleaning brush 30 needs to be switched, we only need to pull the block 46 outward to release the block 46 from the direction positioning groove 41. Then, the block 46 drives the slide bar 45 and the rotating column 29 to rotate 180°, so that the cleaning brush 30 faces the tail drum 2 and touches the outer wall of the tail drum 2. When the tail drum 2 is running, the cleaning brush 30 will clean the outer wall of the tail drum 2 to prevent the dirt on the outer wall of the tail drum 2 from causing wear to the tail drum 2.

[0037] Through the above specific implementation methods, we have realized a tail roller frame that can move the tail of the machine by itself, and its closing structure, inspection structure and switching structure can all work in the expected manner and achieve the expected effect.

[0038] Example 2: Reference Figure 11 , based on the improvement of the embodiment 1: a lifting groove 47 is provided on the side where the two roller frames 4 are close to each other. A lifting seat 48 is slidably connected in the lifting groove 47, and a lead screw 49 is also longitudinally connected in the lifting groove 47. The top thread of the lead screw 49 penetrates the lifting seat 48 and rotates to extend above the roller frame 4. In this way, by rotating the lead screw 49, the lifting seat 48 can be driven to move up and down in the lifting groove 47.

[0039] The lifting seat 48 is rotatably connected to a conical wheel 50 on one side close to the tail drum 2. When the conveyor belt driven on the surface of the tail drum 2 is offset, the lifting seat 48 can be driven to move upward by rotating the corresponding screw 49, thereby driving the conical wheel 50 to move upward. The inclined surface design of the conical wheel 50 can contact the conveyor belt and guide the conveyor belt to move toward the middle, thereby adjusting the position of the conveyor belt. In addition, an arc-shaped clearance groove 40 is also provided on the drum frame 4, and its inclined surface can also contact the conveyor belt to guide the conveyor belt to move toward the middle.

[0040] A method for using the tail roller frame of a self - moving tail end of a machine, comprising the following steps: S1. When installing the tail roller 2 and the roller shaft 3 on the roller frame 4, place the two ends of the roller shaft 3 from top to bottom in the two placement grooves 5, then insert the pressing block 8 into the placement groove 5, and fix the pressing block 8 to the roller frame 4 through bolts. The first semi - circular bearing 6 and the second semi - circular bearing 7 cooperate to initially clamp the roller shaft 3 to ensure the stability of the rotation of the roller shaft 3 in the later stage; S2. Sleeve the end cover 15, the inner sleeve 12, and the outer sleeve 9 onto the outer wall of the roller shaft 3 in sequence from one end of the roller shaft 3. The cooperation between the limit groove 18 and the limit block 19 can limit the positions of the outer sleeve 9 and the end cover 15, and ensure that the sliding groove 21 is aligned with the trapezoidal groove 20. Then, fix the outer sleeve 9 to one side of the roller frame 4 through bolts. When it is necessary to close the outer sleeve 9 with the end cover 15, drive the rotating ring 27 and the bevel gear ring 26 to rotate through the lever 51. The bevel gear ring 26 drives the nut 24 to rotate through the bevel gear 25. The nut 24 drives the threaded rod 23 and the pin rod 22 to move downward. The pin rod 22 extends from the sliding groove 21 into the trapezoidal groove 20, and the bottom end of the pin rod 22 is arc - shaped. At this time, the bottom end of the pin rod 22 cooperates with the inclined surface of the trapezoidal groove 20 to drive the end cover 15 to move towards the inner sleeve 12. When moving, the sealing ring 16 can increase the sealing performance between the end cover 15, the inner sleeve 12, and the outer sleeve 9. Finally, inject lubricating oil into the outer sleeve 9 through the oil inlet 28. Conversely, the tail roller 2 and the roller shaft 3 can be removed from the roller frame 4 and the tail end frame 1; S3. When the tail roller 2 and the roller shaft 3 are running to convey minerals, it is necessary to inspect the surface layer of the tail roller 2. The specific operation is to rotate the screw rod 39. Through the cooperation between the screw rod 39 and the base 31, drive the moving frame 35, the worm 36, and the worm gear 38 to slide as a whole until the rubber wheel 37 is in close contact with the side end of the tail roller 2. Drive the worm 36 to rotate through the friction between the tail roller 2 and the rubber wheel 37. The worm 36 and the worm gear 38 cooperate to drive the reciprocating screw rod 32 to rotate. The reciprocating screw rod 32 drives the small camera 34 to move in a reciprocating straight line through the moving block 33, so as to comprehensively inspect the outer wall of the tail roller 2, and the minerals can continue to be conveyed during the inspection; S4. When there are sundries attached to the outer wall of the tail roller 2 and need to be cleaned, pull the square block 46 outward to release the clamping between the square block 46 and the direction positioning groove 41. Then, drive the slide bar 45 and the rotating column 29 to rotate 180° through the square block 46, so that the cleaning brush 30 faces the tail roller 2 and touches the outer wall of the tail roller 2. When the tail roller 2 is running, clean the outer wall of the tail roller 2 through the cleaning brush 30 to avoid the dirt on the outer wall of the tail roller 2 from wearing the tail roller 2; S5. When the conveyor belt driven by the surface of the tail roller 2 is offset during the operation of the tail roller 2, by rotating the corresponding lead screw 49, the lead screw 49 drives the conical wheel 50 to move upward through the lifting seat 48, and the inclined surface of the conical wheel 50 contacts the conveyor belt to guide the conveyor belt to move towards the middle, so as to adjust the position of the conveyor belt.

[0041] However, as is well known to those skilled in the art, the working principle and wiring method of the small camera 34 are common knowledge, and they all belong to conventional means or well-known common sense, so they will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0042] 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, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A tail drum frame of a self-advancing tail, comprising a tail end frame (1) and a tail drum (2). Both ends of the tail drum (2) are fixed with drum shafts (3), and it is characterized in that, A plurality of tail drum frames are fixed to the top of the tail end frame (1) by bolts. The tail drum (2) is located within the tail drum frames. The tail drum frames are composed of two drum frames (4). Placement grooves (5) are provided at the tops of both of the two drum frames (4). One end of each of the two drum shafts (3) remote from the tail drum (2) respectively penetrates through the corresponding placement groove (5). Two groups of limiting structures are respectively arranged within the two drum frames (4) and are used for preliminarily limiting the drum shafts (3) penetrating through the placement grooves (5). Two groups of fixing structures are respectively arranged on the sides of the two drum frames (4) remote from each other and are used for limiting the two drum shafts (3). It further includes a rotating column (29) rotating between the two drum frames (4). A cleaning brush (30) for cleaning the surface of the tail drum (2) is fixed to one side of the rotating column (29). A small camera (34) for inspecting the surface of the tail drum (2) is provided on the side of the rotating column (29) remote from the cleaning brush (30). An inspection structure is arranged on one side of the rotating column (29) and is used for driving the small camera (34) to reciprocate and move to comprehensively inspect the surface of the tail drum (2). A switching structure is arranged at one end of the rotating column (29) and is used for controlling the rotating column (29) to adjust the orientations of the cleaning brush (30) and the small camera (34), thereby switching between the inspection and cleaning operations of the tail drum (2).

2. The tail roller frame of a self-shifting tailstock according to claim 1, characterized in that, The limiting structure includes a first semi-circular bearing (6) fixedly embedded in the bottom inner wall of the placement groove (5). A pressing block (8) is slidably fitted within the placement groove (5), and the pressing block (8) is detachably and fixedly connected to the drum frame (4) by bolts. A second semi-circular bearing (7) is fixed to the bottom of the pressing block (8), and the first semi-circular bearing (6) and the second semi-circular bearing (7) cooperate to clamp the drum shaft (3) to increase the stability of the rotation of the drum shaft (3).

3. The tail roller frame of a self-shifting tail as described in claim 2, characterized in that The fixed structure includes an outer sleeve (9) arranged on the side of the drum frame (4) away from the tail drum (2). A plurality of connecting plates (10) are welded to the outer wall of the outer sleeve (9). The plurality of connecting plates (10) are detachably and fixedly connected to the drum frame (4) by bolts. An inner sleeve (12) is rotatably connected to the inner wall of the outer sleeve (9) on the side away from the tail drum (2). A ball bearing (11) is arranged on the outer wall of the inner sleeve (12), and the inner ring of the ball bearing (11) is fixedly connected to the outer wall of the inner sleeve (12). The outer ring of the ball bearing (11) is fixedly connected to the inner wall of the outer sleeve (9). A first circular groove (17) is arranged on the side of the outer sleeve (9) close to the tail drum (2). An end cover (15) is slidably fitted in the first circular groove (17), and the end cover (15) is located between the inner sleeve (12) and the drum frame (4) for closing the inner sleeve (12) and the outer sleeve (9). One end of the drum shaft (3) away from the tail drum (2) penetrates through the end cover (15) and slidably extends into the inner sleeve (12). An oil inlet (28) for injecting lubricating oil is arranged at the top of the outer sleeve (9). A sealing structure is arranged between the outer sleeve (9) and the end cover (15) for moving the end cover (15) towards the inner sleeve (12), thereby increasing the sealing performance between the end cover (15), the inner sleeve (12), and the outer sleeve (9).

4. The tail roller frame of a self-shifting tailstock according to claim 3, characterized in that, The sealing structure includes a plurality of trapezoidal grooves (20) arranged on the outer wall of the end cover (15). A plurality of sliding grooves (21) communicating with the first circular groove (17) are arranged in the outer sleeve (9), and the sliding grooves (21) correspond to the positions of the trapezoidal grooves (20). A pin rod (22) is slidably connected in each of the plurality of sliding grooves (21). The bottom end of the pin rod (22) is arc-shaped. The bottom ends of the plurality of pin rods (22) all extend into the corresponding trapezoidal grooves (20) and cooperate with the inclined surfaces of the trapezoidal grooves (20) for driving the end cover (15) to move towards the inner sleeve (12). A threaded rod (23) is fixed to one end of each of the plurality of pin rods (22) away from the end cover (15). One end of each of the plurality of threaded rods (23) slidably extends to the outside of the outer sleeve (9). A nut (24) is threadedly sleeved on the outer wall of each of the plurality of threaded rods (23), and the nut (24) rotates on the outer wall of the outer sleeve (9). A bevel gear (25) is fixedly sleeved on the outer wall of each of the plurality of nuts (24). A bevel gear ring (26) and a rotating ring (27) are rotatably sleeved on the outer wall of the outer sleeve (9), and the bevel gear ring (26) meshes with the plurality of bevel gears (25) for synchronously driving the plurality of nuts (24) to rotate. The side of the rotating ring (27) close to the threaded rod (23) is fixedly connected to the bevel gear ring (26). A plurality of shifting rods (51) are fixed to the side of the rotating ring (27) away from the bevel gear ring (26) for driving the rotating ring (27) to rotate.

5. The tail roller frame of a self-shifting tailstock according to claim 4, characterized in that, The inspection structure includes two bases (31) fixed to one side of the rotating column (29) close to the tail roller (2). A same reciprocating lead screw (32) is rotatably connected between the two bases (31). A moving block (33) that is slidably connected to the outer wall of the rotating column (29) is sleeved on the outer wall of the reciprocating lead screw (32) in a threaded manner. And a small camera (34) is fixed to one end of the moving block (33) away from the rotating column (29). The cooperation between the moving block (33) and the reciprocating lead screw (32) is used to drive the small camera (34) to reciprocate. One side of the rotating column (29) close to the tail roller (2) is slidably connected with a moving frame (35). And one end of the reciprocating lead screw (32) penetrates through the moving frame (35). A worm gear (38) is rotatably connected to one side of the moving frame (35). The worm gear (38) is slidably sleeved on the outer wall of the reciprocating lead screw (32) through a chute and a slider. A worm (36) is rotatably connected to one side of the moving frame (35) close to the worm gear (38) through a substrate. And the worm (36) meshes with the worm gear (38). The worm (36) drives the reciprocating lead screw (32) to rotate through the worm gear (38). One end of the worm (36) is fixed with a rubber wheel (37). And the rubber wheel (37) cooperates with one end of the tail roller (2). The frictional force between the rubber wheel (37) and the end face of the tail roller (2) drives the rubber wheel (37) to rotate. A screw rod (39) is rotatably connected to one side of the moving frame (35) away from the worm (36). One end of the screw rod (39) threadedly penetrates through the adjacent base (31). The cooperation between the screw rod (39) and the base (31) is used to synchronously drive the moving frame (35), the worm (36) and the worm gear (38) to move. An arc-shaped relief groove (40) is provided in one of the roller frames (4). One end of the screw rod (39) away from the moving frame (35) penetrates through the arc-shaped relief groove (40). The arc-shaped relief groove (40) can provide relief for the screw rod (39).

6. The tail roller frame of a self-shifting tail as claimed in claim 5, characterized in that, The switching structure includes a rotating shaft (42) fixed to one end of the rotating column (29). One end of the rotating shaft (42) rotatably penetrates through the roller frame (4) adjacent to the moving frame (35). A direction positioning groove (41) is provided on one side of the roller frame (4) away from the moving frame (35). A square block (46) is provided in the direction positioning groove (41). And the direction positioning groove (41) is used to limit the square block (46). A second circular groove (43) is provided at one end of the rotating shaft (42) away from the rotating column (29). A tension spring (44) is fixed to the inner wall of one side of the second circular groove (43). A sliding rod (45) fixedly connected to one end of the tension spring (44) is slidably connected in the second circular groove (43). And one end of the sliding rod (45) is fixedly connected to one side of the square block (46). The sliding rod (45) and the square block (46) cooperate to drive the rotating column (29) to rotate.

7. The tail drum frame of a self-shifting tailstock according to claim 6, characterized in that, A plurality of limiting grooves (18) are provided in the first circular groove (17). A plurality of limiting blocks (19) are fixed to the outer wall of the end cover (15), and the limiting grooves (18) are in sliding fit with the limiting blocks (19) for limiting the positions of the end cover (15) and the outer sleeve (9). A key block (14) is fixed to the inner wall of the inner sleeve (12). A key groove (13) is provided on the outer wall of the roller shaft (3), and the key block (14) is in sliding fit with the key groove (13) for enabling the roller shaft (3) to drive the key block (14) to rotate, thereby increasing the rotational stability of the roller shaft (3).

8. The tail roller frame of a self - moving tailstock according to claim 7, characterized in that, A sealing ring (16) is fixed to the side of the end cover (15) close to the inner sleeve (12) for increasing the sealing performance between the end cover (15), the inner sleeve (12), and the first circular groove (17).

9. The tail drum frame of a self-shifting tailstock according to claim 8, characterized in that, Lifting grooves (47) are provided on the sides of the two roller frames (4) close to each other. A lifting seat (48) is slidably connected in the lifting grooves (47). A lead screw (49) is longitudinally rotatably connected in the lifting grooves (47). The top end of the lead screw (49) threadedly penetrates through the lifting seat (48), and the top end of the lead screw (49) rotatably extends above the roller frame (4). A conical wheel (50) is rotatably connected to the side of the lifting seat (48) close to the tail roller (2).

10. A method of using a tail roller frame of a self - shifting tailstock as described in claim 9, characterized in that, Including the following steps: S1. When installing the tail roller (2) and the roller shaft (3) on the roller frame (4), place the roller shaft (3) in the placement groove (5) and fix it with a pressing block (8) and bolts. Cooperate with the first semi-circular bearing (6) and the second semi-circular bearing (7) to ensure stable rotation; S2. Install the end cover (15), the inner sleeve (12), and the outer sleeve (9) on the roller shaft (3) in sequence. Use the limiting grooves (18) and the limiting blocks (19) for positioning, and fix the outer sleeve (9) with bolts; drive the bevel gear ring (26) and the bevel gear (25) to rotate by using a lever (51), so that the pin rod (22) enters the trapezoidal groove (20), drive the end cover (15) to move and seal, and finally inject lubricating oil; this process is reversible and is convenient for disassembly; S3. During operation, drive the moving frame (35) to slide by adjusting the screw rod (39), so that the rubber wheel (37) closely adheres to the tail roller (2), and use the friction force to drive the worm (36) and the worm gear (38) to rotate, and then drive the reciprocating lead screw (32) to drive the small camera (34) to reciprocate, realizing a comprehensive inspection without affecting the mineral transportation; S4. During cleaning, pull the square block (46) to release the clamping, rotate the slide bar (45) and the rotating column (29), so that the cleaning brush (30) contacts the outer wall of the tail roller (2), and perform cleaning along with the operation of the roller to prevent wear; S5. When the conveyor belt is offset, rotate the lead screw (49) to lift the conical wheel (50), and use the inclined surface of the conical wheel (50) to guide the conveyor belt to return to the center and adjust the position.

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