Scraper reversed loader for crossheading

Abstract

The embodiment of the utility model provides a scraper reversed loader for a crossheading. The scraper reversed loader is mainly composed of a main body part (a lap joint unloading section, an arch bridge section and a climbing section) and a machine tail part (a landing section and a machine tail). The main body part adopts an assembly welding box type structure and is rigidly connected by a positioning pin and a bolt, and the machine tail part is connected by a dumbbell with a cast welding structure; a matched wheel type crusher is generally connected in series between the two underground parts, auxiliary equipment such as a walking pulling device can be arranged, and the tail is not provided with a transmission device and is in cross connection with a scraper conveyor on a working surface to receive raw coal conveyed by the working surface; and the chutes are connected with the side plates and the bottom plate to form a firm self-supporting bridge body which is suspended in the air. The reversed loader pays attention to convenience in disassembly and assembly and maintainability, optimizes and modifies the structures of a machine head sealing bottom plate, an arch bridge section bridging groove bottom plate and a chute cover plate, adopts a split convex groove, a detachable movable cable bracket, a double-extension split chain wheel and upper oiling lubrication, and is additionally provided with a telescopic lifting and auxiliary coal loading device; and the requirements of continuous production and maintenance working conditions of coal mines are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of underground coal mine equipment, in particular to a scraper transfer station for crossheading. BACKGROUND

[0002] The scraper transfer station for crossheading is the key to the continuous and efficient development of underground production, and the quality of its mutual supporting operation with the scraper conveyor, crusher and belt conveyor in the mining face has a direct impact on the comprehensive benefits of the mine. However, the underground working environment is complex and changeable. When in use, the machine head and the power part are usually of large mass, which often causes insufficient support force at the end of the machine head. In addition, the machine head and the tail of the belt conveyor may cause mutual scratching when they are stretched and contracted, which not only causes excessive noise, but also causes the scraper to break at the lower rotary plate of the chain wheel, and the weld at the lap pin shaft is also easy to tear, causing the equipment to be unable to be connected. Because of the wear between the scraper chain and the chain wheel, the wear degree of the chain nest is also much greater than that of the scraper chain at the same period. When the coal cutter cuts the triangular coal, the roller will push the coal to the vicinity of the receiving port of the transfer station, and the coal cannot directly fall onto the chute of the transfer station. With the continuous increase of the accumulation, the scraper conveyor will be hindered. When the large pieces of coal or gangue unloaded from the conveyor are often stuck in the middle slot fixed baffle of the transfer station, on the one hand, the top sealing plate of the transfer station is easy to be deformed and arched due to the large instantaneous coal amount, and the middle plate of the convex groove, the hinged groove and the arch bridge groove of the climbing section is also easy to be damaged, which causes coal and water leakage, so the machine has to be stopped for manual cleaning before continuing the work. In the coal mine underground construction, the installation of the cable often causes safety hazards due to unreasonable cable arrangement. SUMMARY

[0003] In order to solve one of the above technical defects, the scraper transfer station for crossheading provided in the embodiments of the present application comprises:

[0004] The main part comprises a lap unloading section, an arch bridge section and a climbing section connected in sequence;

[0005] The tail part comprises a landing section and a tail connected in sequence;

[0006] The head transmission part is arranged on either side of the lap unloading section;

[0007] The lap unloading section, the arch bridge section, the climbing section, the landing section and the tail are provided with a continuous chute;

[0008] The chain wheel assembly comprises a head chain wheel and a tail chain wheel, the head chain wheel is rotatably arranged on the lap unloading section, the output end of the head transmission part is connected in transmission with the head chain wheel, the tail chain wheel is rotatably arranged on the tail, the head chain wheel and the tail chain wheel are annularly and closedly wound with a scraper chain, and the scraper chain is slidably arranged in the chute;

[0009] A bottom sealing plate is arranged below the middle plate of the chute, and the left side plate and the right side plate are respectively connected to the two sides of the middle plate and the bottom sealing plate.

[0010] Further, the overlapping unloading section comprises:

[0011] The front end of the front frame is provided with a front opening, and the head chain wheel is rotatably arranged on the front frame through the front opening. A unloading guide chute baffle and a buffer device are installed below the front opening of the front frame. A coupling pad frame is arranged outside the left and right side plates of the front frame. The head transmission part can be installed on either side of the front frame through the coupling pad frame as needed.

[0012] The rear chute body is slidably connected with the front frame, and the two ends of the telescopic oil cylinder are hingedly connected with the rear chute body and the front frame, respectively.

[0013] The walking part is arranged at the bottom of the front frame. A clamp is arranged on the bottom sealing plate of the front frame chute. The walking part is connected with the front frame through the clamp. The front end of the bottom sealing plate of the front frame chute is bent downward, and a round steel is arranged at the front end of the bottom sealing plate of the front frame chute.

[0014] Further, the head chain wheel and the tail chain wheel comprise:

[0015] The chain wheel shaft has outer splines extending outward at both ends thereof;

[0016] The split chain tooth comprises an upper split chain tooth and a lower split chain tooth. The upper split chain tooth and the lower split chain tooth are fitted on the chain wheel shaft after being spliced together, and are connected by bolts after being spliced together.

[0017] Further, the arch bridge section comprises:

[0018] The bridge slot is connected with the tail end of the overlapping unloading section at the first end thereof, and is connected with the climbing section at the tail end thereof. A movable baffle is slidably connected to one side of the chute bottom sealing plate of the bridge slot.

[0019] The telescopic lifting device is arranged at the bottom of the bridge slot and comprises:

[0020] The bracket is connected with the tail end of the upper chute bottom sealing plate of the bridge slot.

[0021] The base is arranged below the bracket.

[0022] The push cylinder is hingedly connected with the base and the bracket at both ends thereof.

[0023] Further, the climbing section comprises:

[0024] The convex groove is connected with the tail end of the arch bridge section at the first end thereof.

[0025] The concave groove is connected with the first end of the landing section at the tail end thereof.

[0026] The multi-section inclined hinged groove is connected with the convex groove and the concave groove at both ends thereof.

[0027] The middle plate and the bottom plate on the convex groove and the concave groove are thickened;

[0028] The convex groove is detachable and split, including three movable upper groove bodies and a large circular arc bottom groove. The three movable upper groove bodies are arranged on the bottom groove, the bottom of the movable upper groove body is connected with the bottom groove, and the adjacent two movable upper groove bodies are connected by screwing.

[0029] Further, the landing section comprises:

[0030] The push seat groove, the lifting groove, the adjusting groove, the open skylight middle groove and the unloading groove are sequentially connected, the head end of the push seat groove is connected with the tail end of the climbing section, and the tail end of the unloading groove is connected with the head end of the tail section;

[0031] The push seat groove, the lifting groove, the adjusting groove and the open skylight middle groove are all provided with top sealing plates with handles, and the top sealing plate of the open skylight middle groove is provided with a foldable window which can be opened and closed;

[0032] A steel I-beam is welded below the top sealing plate at the head end of the open skylight middle groove, and the steel I-beam has the same width as the open skylight middle groove;

[0033] A plurality of lower rib plates are arranged below the several top sealing plates of the open skylight middle groove.

[0034] Further, a plurality of detachable movable cable supports are arranged on the top sealing plates of the adjusting groove and the open skylight middle groove at intervals, the movable cable support comprises a lower bracket body and an upper bracket body, the bottom of the lower bracket body is connected with the top sealing plate, the upper bracket body is connected with the lower bracket body through bolts, and a wire pressing bolt is arranged on the top inner side of the upper bracket body.

[0035] Further, an auxiliary coal loading device is arranged between the open skylight middle groove and the unloading groove, and the auxiliary coal loading device comprises:

[0036] A fixed coal blocking plate is arranged on one side of the unloading opening at the tail end of the open skylight middle groove;

[0037] A movable coal blocking plate is hingedly connected with the tail end of the fixed coal blocking plate;

[0038] A hydraulic oil cylinder is hingedly connected with the fixed coal blocking plate and the movable coal blocking plate at both ends.

[0039] Further, the tail section comprises:

[0040] A tail section frame, the head end of the tail section frame is connected with the unloading groove, the tail end of the tail section frame is provided with a tail section cover, a tail section sprocket is arranged in the tail section cover, an observation window is arranged on the top of the tail section cover, and a pulverized coal unloading window is arranged at the tail of the tail section cover;

[0041] The sprocket shaft of the tail section sprocket is rotatably arranged on the two side plates at the tail end of the tail section frame through bearings, and end covers are arranged on the outer sides of the two bearings;

[0042] The oil tank is arranged on the high-added baffle, a dynamic vernier is arranged on the oil tank, a first oil injection hole and a first exhaust hole are arranged on the top cover of the oil tank, the first oil injection hole is communicated with the inside of the oil tank, an oil injection pipeline is communicated below the oil tank, the first exhaust hole is connected with an exhaust pipeline, and the two end covers are respectively provided with a second exhaust hole and a second oil injection hole.

[0043] Further, the head transmission part comprises:

[0044] A double-speed motor and a planetary reducer;

[0045] A motor shaft disc, the two ends of the motor shaft disc are respectively connected with the double-speed motor and the planetary reducer through flanges, and the output shaft of the double-speed motor is connected with the planetary reducer in transmission;

[0046] An inner spline is arranged on the output shaft of the planetary reducer, and a chain wheel shaft is connected with the output shaft of the planetary reducer through an outer spline, and the inner spline is engaged with the outer spline.

[0047] The crossheading scraper reclaimer provided in the embodiment of the application is connected with the working face scraper conveyor in cross connection to receive the raw coal transported out of the working face, and each chute is connected with the same side plate and bottom plate to form a solid self-supporting bridge body suspended in the air. The reclaimer focuses on convenient disassembly and maintainability, optimizes the structure of the head sealing bottom plate, the arch bridge section bridge chute bottom plate and the chute cover plate, adopts a split type convex groove, a detachable movable cable support, a double-stretch sectional chain wheel and upper oil injection lubrication, and additionally adds telescopic lifting and auxiliary coal loading devices to adapt to the needs of continuous production and maintenance conditions of the coal mine, thereby better serving the mine production.

[0048] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and attained by means of the instrumentalities particularly pointed out in the written description and claims hereof, as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0049] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0050] Figure 1 The overall structure schematic view of the crossheading scraper reclaimer provided in the embodiment of the application;

[0051] Figure 2A schematic view of a transmission part structure provided by an embodiment of the present application;

[0052] Figure 3 A schematic view of a double-stretching sprocket shaft structure provided by an embodiment of the present application;

[0053] Figure 4 A schematic view of a machine head frame structure provided by an embodiment of the present application;

[0054] Figure 5 A sectional view of a front machine frame provided by an embodiment of the present application;

[0055] Figure 6 A schematic view of a telescopic lifting device structure provided by an embodiment of the present application;

[0056] Figure 7 A schematic view of a split protrusion structure provided by an embodiment of the present application;

[0057] Figure 8 A schematic view of a top sealing plate structure provided by an embodiment of the present application;

[0058] Figure 9 A schematic view of an auxiliary coal loading device structure provided by an embodiment of the present application;

[0059] Figure 10 A schematic view of a machine tail structure provided by an embodiment of the present application;

[0060] Wherein, 1 is the lap unloading section, 10 is the head transmission part, 101 is the double-speed motor, 102 is the motor coupling disc, 103 is the planetary reducer, 104 is the head chain wheel, 105 is the scraper chain, 11 is the front frame, 111 is the middle plate, 112 is the bottom sealing plate, 1121 is the round steel, 113 is the clamp, 114 is the first reinforcing rib, 115 is the second reinforcing rib, 117 is the buffer device, 118 is the connecting pad frame, 12 is the rear tank body, 121 is the telescopic oil cylinder, 13 is the walking part, 14 is the belt conveyor, 2 is the arch bridge section, 21 is the bridge slot, 211 is the movable plug plate, 212 is the connecting flange plate, 213 is the positioning pin, 22 is the telescopic lifting device, 221 is the base, 222 is the push cylinder, 223 is the bracket, 224 is the pressing plate, 225 is the hydraulic valve, 3 is the climbing section, 31 is the convex groove, 311 is the bottom groove, 312 is the movable upper tank body, 32 is the hinged groove, 33 is the concave groove, 4 is the landing section, 40 is the movable cable support, 401 is the lower frame body, 402 is the upper frame body, 41 is the push seat groove, 42 is the lifting groove, 43 is the adjusting groove, 44 is the open skylight middle groove, 441 is the I-beam, 442 is the top sealing plate, 443 is the folding window, 444 is the lower rib plate, 445 is the third reinforcing rib, 446 is the fixed coal blocking plate, 447 is the movable coal blocking plate, 448 is the hydraulic oil cylinder, 45 is the unloading groove, 5 is the tail, 51 is the cover plate, 52 is the pulverized coal unloading window, 53 is the end cover, 531 is the second exhaust hole, 532 is the first oil injection hole, 54 is the chain wheel assembly, 541 is the chain wheel tooth, 542 is the chain nest, 543 is the outer spline, 544 is the bolt, 545 is the tail chain wheel, 546 is the chain wheel shaft, 547 is the upper split chain tooth, 548 is the lower split chain tooth, 55 is the heightening baffle, 56 is the oil tank, 561 is the first exhaust hole, 562 is the first oil injection hole, 563 is the dynamic oil mark, 57 is the observation window. DETAILED DESCRIPTION

[0061] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application are further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0062] In the process of implementing the present application, the inventor found that the scraper transfer machine in the crossheading is the key to the continuous and efficient development of underground production. The quality of its mutual matching operation with the scraper conveyor, crusher and belt conveyor in the mining face has a direct impact on the comprehensive benefits of the mine. However, the working environment in the underground is complex and changeable. When in use, the head and the power part are usually of large mass, which often causes insufficient support force at the end of the head. In addition, the head and the tail of the belt conveyor may cause mutual scratching when they are stretched and contracted, which not only causes excessive noise, but also causes the scraper to break at the rotating plate below the chain wheel, and the weld at the lap pin shaft is also easy to tear, causing the equipment to be unable to be connected. Because of the wear between the scraper chain and the chain wheel, the wear degree of the chain nest is also much greater than that of the scraper chain at the same period. When the coal cutter cuts the triangular coal, the drum will push the coal to the vicinity of the receiving port of the transfer machine, and the coal cannot directly fall onto the chute of the transfer machine. With the continuous increase of the accumulation, it will hinder the movement of the scraper conveyor. When the large pieces of coal or gangue unloaded from the conveyor are often stuck in the middle of the transfer machine, the fixed baffle port is easy to cause the top sealing plate of the transfer machine to be deformed and arched due to the large instantaneous coal amount, and the middle plate of the convex groove, the hinged groove and the arch bridge section of the climbing section is also easy to be damaged, which causes coal and water leakage, so the machine has to be stopped for manual cleaning before continuing the work. In the construction work in the coal mine, the installation of the cable often causes safety hazards due to unreasonable cable arrangement.

[0063] In view of the above problems, a scraper transfer machine (hereinafter referred to as transfer machine) for crossheading is provided in the embodiments of the present application, which is used with the scraper conveyor, crusher and belt conveyor 14 in the mining face. The transfer machine comprises:

[0064] The main part comprises a lap unloading section 1, an arch bridge section 2 and a climbing section 3 connected in sequence;

[0065] The tail part comprises a landing section 4 and a tail 5 connected in sequence;

[0066] The head transmission part 10 can be installed on either side of the unloading section 1 left and right according to the actual situation of the crossheading to adapt to the needs of different working faces;

[0067] The lap unloading section 1, the arch bridge section 2, the climbing section 3, the landing section 4 and the tail 5 are provided with continuous chutes;

[0068] The chain wheel assembly 54 comprises a head chain wheel 104 and a tail chain wheel 545. The head chain wheel 104 is rotatably arranged on the lap unloading section 1. The output end of the head transmission part 10 is connected in transmission with the head chain wheel 104. The tail chain wheel 545 is rotatably arranged on the tail 5. The head chain wheel 104 and the tail chain wheel 545 are closed and wound with a scraper chain 105. The scraper chain 105 is slidably arranged in the chute;

[0069] A bottom sealing plate 112 is arranged below the middle plate 111 of the chute, and left and right side plates are respectively connected to the two sides of the middle plate 111 and the bottom sealing plate 112.

[0070] In a specific implementation, the scraper conveyor is arranged at a coal mine underground entry conveying working face, and when used in cooperation with the working face scraper conveyor and the belt conveyor, the walking part 13 of the transfer conveyor is overlapped on the tail of the belt conveyor to move as a whole, so that the transfer conveyor is adjusted as a whole along with the moving step distance of the working face conveyor, the head transmission part 10 drags the scraper chain 105 in the closed loop of the transfer conveyor through the chain wheel assembly 54 to run, the coal transferred by the scraper conveyor into the chute is conveyed to the crusher, and then the crushed coal is conveyed to the belt conveyor to complete the task of conveying the coal. Figure 1 As shown in the figure, the transfer conveyor mainly comprises a main part (the overlapping unloading section 1, the arch bridge section 2, and the climbing section 3) and a tail part (the landing section 4 and the tail 5), the main part adopts a box structure connected by welding and positioning pins and bolts, the tail part adopts a dumbbell connection by casting and welding, a wheel type crusher is usually connected between the main part and the tail part in the underground mine, and auxiliary equipment such as a walking and pulling device can also be provided. The tail 5 of the transfer conveyor is not provided with a transmission device and is connected with the working face scraper conveyor to receive the raw coal conveyed by the working face; the chutes have different functions at different positions as the scraper running guide rails and material carriers, and the middle plate, the left and right side plates, and the bottom plate are connected to form a solid self-supporting bridge body suspended in the air.

[0071] As a preferred solution, the overlapping unloading section 1 comprises:

[0072] The front frame 11 is provided with a front opening at the front end, the head chain wheel 104 is rotatably arranged on the front frame 11 through the front opening, the unloading guide chute baffle and the buffer device 117 are installed below the front opening of the front frame 11, and the coupling pad frame 118 is arranged on the left and right side plates of the front frame 11, and the head transmission part 10 can be installed on either side of the front frame 11 through the coupling pad frame 118 as needed.

[0073] The rear chute body 12 is slidably connected with the front frame 11, and the telescopic oil cylinder 121 is arranged at the two sides of the rear chute body 12.

[0074] The walking part 13 is arranged at the bottom of the front frame 11 and is supported on the guide rail of the self-moving tail frame of the belt conveyor 14, and the walking part 13 can slide along the rail to realize the overlapping and relative movement of the belt conveyor 14 and the front frame 11. The clamp 113 is arranged on the bottom sealing plate 112 of the chute of the front frame 11, the walking part 13 is connected with the front frame 11 through the clamp 113, the front end of the bottom sealing plate 112 of the chute of the front frame 11 is bent downward, and the round steel 1121 is arranged at the front end of the bottom sealing plate 112 of the chute of the front frame 11.

[0075] Specifically, as shown in Figure 4 , the lap unloading section 1 is a telescopic slot, which integrates the functions of transition, connection and adjustment, and is divided into two parts, a front frame 11 and a rear slot body 12, which mainly supports the head transmission part 10, the sprocket assembly 54, the scraper chain 105 and other components and adjusts the tension of the telescopic head chain. At the same time, it completes the transition of the bridging slot 21 to the lap unloading section 1. The head sprocket 104 is installed in the front opening and is fixed at the front end of the front frame 11 by two pressing blocks. The unloading guide slot baffle and the buffer device 117 installed below the front opening can prevent the load on the belt conveyor belt 14 from being unbalanced and reduce the impact on the conveyor belt. The front frame 11 is a hydraulic telescopic parallel arrangement end discharge type, which realizes the telescoping of the front frame through the telescopic oil cylinder 121 and the control system. When the scraper chain is elongated or worn out, the tension is adjusted. When the scraper chain is loose, the handle of the control valve is turned to the elongated position, the oil cylinder piston is extended to the appropriate position, and the positioning pin is fixed. When the scraper chain is tight, the handle of the control valve is turned to the retracted position, the oil cylinder piston is retracted to the appropriate position, and the positioning pin is fixed. When the telescopic oil cylinder is elongated to the limit position, the oil cylinder piston rod needs to be retracted to tighten the chain.

[0076] As a supplement to the above preferred solution, as shown in Figure 5 , the present reclaimer optimizes the bending diameter at the inlet of the head sealing bottom plate 112 and increases the round steel 1121 at the end, so that the scraper can smoothly transition when entering the lower chain channel, avoiding collision of the scraper at this point and improving the service life of the head. The head is strengthened, the clamp 113 is changed to a stepped type, which is inserted and welded from the upper part of the sealing bottom plate 112, and a first reinforcing rib 114 is arranged on the outer circumference of the clamp 113 for strengthening and welding. The sealing bottom plate 112 welded with the clamp 113 is lengthened to both sides, and a second reinforcing rib 115 is added between the sealing bottom plate 112 and the side plate. After improvement, the overall strength of the reclaimer head is improved, and accidents are avoided.

[0077] As a preferred solution, the head sprocket 104 and the tail sprocket 545 include:

[0078] The chain wheel shaft 546 has outer splines 543 extending outward at both ends;

[0079] The split chain tooth includes an upper split chain tooth 547 and a lower split chain tooth 548, which are combined and sleeved on the chain wheel shaft 546. The upper split chain tooth 547 and the lower split tooth 548 are connected by bolts 544 after being combined.

[0080] In specific implementation, during use of the reclaimer, the scraper chain 105 is worn due to meshing with the sprocket, and the chain nest 542 is worn to a much greater extent than the damage to the scraper chain 105 at the same period. As shown in Figure 2 ,Figure 3 As shown, the chain wheel shaft group 54 is changed to a double extension structure, and is rotated by 180° according to the wear condition of the chain groove 542, so that the chain wheel chain groove 542 is uniformly worn in front and back, thereby improving the service life. The shaft group of this structure only needs to be installed on the other side when the power part is replaced; or when the chain wheel is severely worn, the shaft group only needs to be reversed and installed in cooperation with the spline at the other end, thereby improving the service life of the chain wheel shaft group. As shown, Figure 3 As shown, the chain wheel assembly driving frame is changed to a split chain wheel, and the split chain wheel 54 structure can conveniently replace the chain wheel assembly, and does not need to disassemble the horizontal scraper guide rail and the support plate when replacing the driving unit; when the chain wheel teeth 541 are severely worn, the whole does not need to be replaced, thereby reducing the labor intensity.

[0081] As a preferred scheme, the arch bridge section 2 comprises:

[0082] The bridge slot 21 is connected to the tail end of the rear slot body 12, and the tail end of the bridge slot 21 is connected to the head end of the climbing section 3. The bridge slot 21 is slidably connected to the movable plug plate 211 on one side of the chute bottom plate 112.

[0083] The telescopic lifting device 22 is arranged at the bottom of the bridge slot 21 and comprises:

[0084] The bracket 223 is connected to the tail end of the chute bottom plate 112 on the bridge slot 21.

[0085] The base 221 is arranged below the bracket 223.

[0086] The push cylinder 222 is hingedly connected to the base 221 and the bracket 223 at both ends.

[0087] The pressing plate 224 is connected to the bracket 223 through the tail end of the chute bottom plate 112 on the bridge slot 21.

[0088] The hydraulic valve 225 is arranged on the bracket 223, and is used to adjust the input flow of the push cylinder 222.

[0089] The slot bottom plate 112 is optimized to a plug-in form, a lower flange connecting plate 212 is added at the bottom, there are positioning pins 213 and fastening bolts between the slots, rigid connection is adopted, and a drawer type side-drawing movable plug plate 211 is arranged on the side of the bottom plate.

[0090] In actual implementation, the highest point of the scraper conveyer in the crossheading is the overlapping unloading section 1. During operation, the machine head and the transmission part 10 have large mass, which often causes insufficient support force at the machine head end. In addition, the telescopic machine head of the conveyer and the telescopic tail of the belt conveyer 14 often cause mutual scraping during telescoping, and sometimes cause operation failure, thereby affecting the work efficiency of transportation. Therefore, the telescopic lifting device 22 is arranged at the bottom of the bridging groove 21. When assembled with the bridging groove 21 of the arch bridge section, the tail end of the bottom plate 112 of the bridging groove 21 is inserted between the upper plate and the pressing plate 224 of the bracket 223, and then the pressing plate 224 and the bracket 223 are connected by bolts. In this way, the bottom plate 112 of the bridging groove 21 is clamped in the device, and the assembly with the bridging groove 21 is completed. The push cylinder 222 is lifted through the hydraulic system (for example, the rated working pressure of the oil cylinder is 31.5 MPa, the rated thrust is 390 kN, the rated pulling force is 205 kN, and the stroke is 700 mm). According to the on-site operation condition, the height is adjusted through the hydraulic valve 225 to ensure the normal operation of the conveyer. Since the telescopic lifting device has high automation degree and simple operation, the labor intensity is reduced.

[0091] As a supplement to the above preferred scheme, the arch bridge section 2 of the conveyer often causes coal leakage during operation, which causes waste. As shown in Figure 4 The bottom plate 112 of the bridging groove 21 of the present conveyer is optimized to be inserted and connected, and the lower flange connecting plate 212 is added at the bottom. There are positioning pins 213 and fastening bolts between the grooves, and rigid connection is adopted. The drawer type side-drawing movable plate 211 is arranged on the side surface of the bottom plate, which reduces the occurrence of coal leakage and improves the efficiency of coal mine transportation.

[0092] As a preferred scheme, the climbing section 3 includes:

[0093] The convex groove 31 is connected to the tail end of the arch bridge section 2;

[0094] The concave groove 33 is connected to the head end of the landing section 4;

[0095] The multi-section inclined hinged groove 32 is connected to the convex groove 31 and the concave groove 33 at both ends.

[0096] In actual implementation, the front frame 11 of the transshipment machine is connected with the tail of the belt conveyor 14, in order to ensure sufficient connection length and space, the landing section 4 is guided to the climbing section 3 by the groove 33, and then the climbing section 3 is guided to the horizontal arch bridge section 2 by the convex groove 31, so that the arch bridge groove 21 is connected with the rear groove body 12 and the front frame 11, a space for connecting the tail of the belt conveyor 14 with the head of the transshipment machine is formed (for example, the climbing angle of the transshipment machine is 10°), so that the coal flow in the climbing section 3 is smooth. The middle plate 111 and the bottom plate 112 of the convex groove 31 and the groove 33 are increased in thickness, and a large circular arc is used for transition, so as to reduce wear and improve the coal passing capacity. The climbing section 3 is connected with the groove 33, and a plurality of hinged grooves 32 are arranged in the groove 33, so as to adapt to the ups and downs of the roadway floor and the height change caused by the movement of the tail of the belt conveyor.

[0097] As a supplement to the above preferred embodiment, the convex groove 31 is detachable and split, including three movable upper groove bodies 312 and a large circular arc bottom groove 311. The three movable upper groove bodies 312 are arranged on the bottom groove 311, the bottom of the movable upper groove body 312 is connected with the bottom groove 311, and the adjacent two movable upper groove bodies 312 are connected by screwing.

[0098] In actual implementation, as shown in Figure 7 , the transshipment machine adopts a split convex groove, which aims to change the convex groove 31 into a detachable bottom groove 311 and three movable upper groove bodies 312, so as to facilitate replacement of the severely worn parts in the field. When replacing, only the chain connecting ring of the upper chain scraper chain 105 needs to be disconnected, without disconnecting the bottom chain scraper chain 105, so as to ensure the stability of the overall performance of the convex groove 31. At the same time, each part can be produced as a spare part, reducing the investment of the mine and saving costs, and facilitating replacement.

[0099] As a preferred embodiment, the landing section 4 includes:

[0100] a push seat groove 41, a lifting groove 42, an adjusting groove 43, a middle groove 44 with an open skylight, and a discharge groove 45 connected in sequence, the head end of the push seat groove 41 is connected with the tail end of the climbing section 3, and the tail end of the discharge groove 45 is connected with the head end of the tail 5;

[0101] The push seat groove 41, the lifting groove 42, the adjusting groove 43, and the middle groove 44 with an open skylight are all provided with top sealing plates 442 with handles, and the top sealing plate 442 of the middle groove 44 with an open skylight is provided with a foldable window 443 which can be opened and closed;

[0102] The top sealing plate 442 of the head end of the middle groove 44 with an open skylight is welded with an I-beam 441, and the I-beam 441 has the same width as the middle groove 44 with an open skylight;

[0103] A plurality of lower rib plates 444 are arranged below the top sealing plates 442 of the middle groove 44 with an open skylight.

[0104] In the actual implementation, the material unloaded by the scraper conveyor of the mining face into the landing section 4 of the transfer machine often contains large gangue and large coal blocks, which can easily cause the cover plate of the landing section 4 of the transfer machine to be severely deformed, the bolts to be detached, and the two side baffles to be inwardly deformed. Figure 8 As shown in FIG. 1, the landing section 4 of the present transfer machine is provided with a top cover plate 442, which is fastened to the baffles of the transfer machine by high-strength bolts. The worker support and replacement can be performed on the machine body without falling into the transfer machine, which is convenient and safe. Meanwhile, the top cover plate 442 is modified into a folding window 443 with a handle. When the equipment is maintained, the folding window 443 can be opened for inspection or the folding window 443 can be used to enter the inside of the machine body for maintenance. When the roadway is cleaned, the floating coal can be pushed into the transfer machine through the folding window 443, without the need to remove the top cover plate 442, which is very convenient.

[0105] The top cover plate 442 is made of thick steel plate (e.g., δ30mm). The left and right sides of each cover plate are provided with a rib 445. The first top cover plate is welded with a No. 11 mine I-beam 441 having the same width as the central slot 44 of the open top, and is reinforced by a reinforcing rib. When the instantaneous coal amount is too large, the excess coal will be blocked outside the closed section by the I-beam 441, so that the amount of coal entering the closed section will not exceed the height of the top cover plate 442, and the top cover plate 442 will not be deformed and arched, effectively preventing the cover plate from being bent and deformed. The reinforcement of the top cover plate 442 also supports and protects the baffles of the central slot 44 of the open top, which can reduce the inward deformation of the baffles and increase the service life of the machine. Meanwhile, the lower rib 444 of the cover plates near the tail of the machine can crush the large coal blocks to prevent the coal blocks from causing extrusion deformation of the slot body.

[0106] As a preferred scheme, a plurality of detachable movable cable supports 40 are arranged on the top cover plate 442 of the adjusting slot 43 and the central slot 44 of the open top. The movable cable support 40 includes a lower bracket body 401 and an upper bracket body 402. The bottom of the lower bracket body 401 is connected to the top cover plate 442, and the upper bracket body 402 is connected to the lower bracket body 401 by bolts. The top inside of the upper bracket body 402 is provided with a wire pressing bolt.

[0107] In actual implementation, in order to ensure the effectiveness of the operation of the gangway scraper transfer machine, it is necessary to continuously arrange the wiring as the mining operation proceeds. However, the large number of wirings may cause high installation difficulty and unreasonable wiring direction, thereby negatively affecting the transportation operation efficiency. The transfer machine adopts detachable movable cable support 40. The bottom plate of the lower frame body 401 has an opening. The cylinder pin reserved on the top sealing plate 442 of the transfer machine is assembled with the movable cable support 40 by means of a spring pin. During operation, the upper and lower frame bodies can place two kinds of cables. The bolt on the upper surface of the upper frame body serves to press the cable. Each top sealing plate can install two movable cable supports 40. Through the cooperation with the cable hook on the surface of the middle slot 44 of the open window, the flexible installation of the cable can be realized. At the same time, the cable line structure of the operation site is simplified, and the cable laying speed is improved.

[0108] As a preferred scheme, an auxiliary coal loading device is installed between the middle slot 44 of the open window and the discharge chute 45. The auxiliary coal loading device comprises:

[0109] A fixed coal baffle 446 is installed on one side of the tail end discharge port of the middle slot 44 of the open window.

[0110] An active coal baffle 447 is hingedly connected to the tail end of the fixed coal baffle 446.

[0111] A hydraulic oil cylinder 448 is hingedly connected to the fixed coal baffle 446 and the active coal baffle 447 at both ends.

[0112] In actual implementation, in view of the problem of coal blocking and stacking of the scraper transfer machine, the auxiliary coal loading device is additionally arranged between the middle slot 44 of the open window and the discharge chute 45. During use, one end of the cylinder barrel of the hydraulic oil cylinder 448 is connected with the active coal baffle 447, and one end of the piston rod is connected with the fixed coal baffle 446. By controlling the valve to control the extension and retraction of the piston rod of the hydraulic oil cylinder 448, the active coal baffle 447 can be swung and rotated around the hinge to extrude the coal and other materials into the transfer machine chute, so as to facilitate the transfer machine to transport the coal away, reduce the labor intensity of workers, and improve the work efficiency.

[0113] As a preferred scheme, the tail 5 comprises:

[0114] A tail frame is bolted and fixedly connected to the discharge chute 45 through a flange at the head end of the tail frame. A tail guard is arranged at the tail end of the tail frame. A tail sprocket 545 is installed in the tail guard. An observation window 57 is arranged at the top of the tail guard. A pulverized coal discharge window 52 is arranged at the tail of the tail guard.

[0115] A sprocket shaft 546 of the tail sprocket 545 is rotatably arranged on the two side plates at the tail end of the tail frame through bearings. End covers 53 are arranged on the outer sides of the two bearings.

[0116] The oil tank 56 is arranged on the raised baffle 55, and the dynamic cursor 563 is arranged on the oil tank 56. The first oil injection hole 562 is arranged on the top cover of the oil tank 56 and is in communication with the inside of the oil tank 56. The oil injection pipeline is communicated with the lower part of the oil tank 56. The first exhaust hole 561 is connected with the exhaust pipeline. The second oil injection hole 532 and the second exhaust hole 531 are arranged on the two end covers 53. The two second oil injection holes 532 are connected in series and are in communication with the oil injection pipeline. The two second exhaust holes 531 are connected in series and are in communication with the exhaust pipeline.

[0117] In the embodiment, the tail frame is of an open structure as the rotating part of the scraper chain. The tail sprocket assembly 54 can be assembled or disassembled as a whole. The tail frame is not provided with a transmission device. The tail frame is connected with the scraper conveyor 14 at the coal receiving section of the working face. The service life of the tail frame directly affects the service life of the transfer machine. The upper edge of the coal blocking plate of the tail frame of the transfer machine is provided with the cover plate 51. The thickness of the upper edge is increased. The thickness of each plate of the frame body is increased within a normal range, and the material quality is improved, so as to increase the service life of the tail frame.

[0118] During the mining of the working face, especially when the tail frame is at a low level, the coal is easily pulled back during the transportation process. A large amount of coal powder enters the bottom chute, which causes the blocking of the chute and the bottom chain, and easily causes the chain to break. As shown in Figure 10 The transfer machine is provided with the skylight 57 above the tail frame cover. The bottom chain and the coal blocking condition at the tail frame can be detected and handled. The coal unloading window 52 is arranged at the rotating part to avoid the accumulation of a large amount of coal powder.

[0119] The conventional tail frame shaft group is injected with oil from both sides. However, the side close to the support cannot be normally injected with oil because the oil tank is close to the support base. The tail frame must be moved a certain distance to be injected with oil, which is very inconvenient. The tail frame of the transfer machine is injected with oil from the top. As shown in Figure 10 The concentrated oil tank is used to store oil and the oil is injected into the oil tank through the first oil injection hole 562. The oil tank is filled with oil. Then, the oil is injected into the left and right shaft groups of the tail frame through the second oil injection hole 532. The oil injection nozzles on both sides are connected with the steel pipes and the oil is injected into the shaft group on the raised baffle of the tail frame. The oil injection work of the tail frame is greatly facilitated.

[0120] As a preferred scheme, the head driving part 10 comprises:

[0121] The double-speed motor 101 and the planetary reducer 103.

[0122] Motor coupling disc 102, both ends of motor coupling disc 102 are connected with double-speed motor 101 and planetary reducer 103 through flange plate respectively, output shaft of double-speed motor is connected with planetary reducer 103 in transmission;

[0123] The output shaft of planetary reducer 103 is provided with inner spline, sprocket shaft 546 is connected with the output shaft of planetary reducer 103 through outer spline 543, and inner spline is engaged with outer spline 543.

[0124] Specific implementation, as shown in Figure 2 Motor coupling disc 102 with flange plate connects planetary reducer 103, double-speed motor 101 and the like into a whole to form power part; it is assembled on one side of front frame 11 through bolt connection, the inner spline of output shaft of planetary reducer 103 is engaged with the outer spline 543 of sprocket shaft 546, thereby driving sprocket assembly 54, and then the task of conveying coal is completed by the operation of scraper chain 105 in the required direction by the transmission of head sprocket 104 to annular closed scraper chain 105.

[0125] The squeezereturning machine for crossheading provided by the application changes the chain wheel shaft group into double extension structure, rotates 180° according to the wear condition of chain nest, makes the wear of chain wheel and chain nest even, and improves the service life. When the power part is replaced, the power part is only needed to be installed on the other side. When the chain wheel is seriously worn, the shaft group is only needed to be reversed and installed with the spline on the other end, which improves the service life of the chain wheel shaft group. The split chain wheel structure can conveniently replace the chain wheel assembly, and the horizontal scraper guide rail and support plate do not need to be disassembled when the driving unit is replaced. When the chain wheel teeth are seriously worn, the whole chain wheel does not need to be replaced, which reduces the labor intensity. The single extension double-acting oil cylinder is used to connect the front rack and the rear groove body, which plays the role of fine adjustment of chain tension. The extrusion problem between scrapers is paid attention to, the squeezereturning machine head bottom plate is improved, the squeezereturning machine head middle plate and the bottom plate are kept at a certain distance, the bottom plate is in the shape of a circular arc, the stable operation of the squeezereturning machine is ensured, the collision between scrapers is avoided, the bottom plate is also transformed to reduce the friction sound and improve the use effect of the squeezereturning machine. The telescopic lifting device is arranged below the arch bridge section, which effectively solves the problem of insufficient support force of the squeezereturning machine. During the operation of the squeezereturning machine, the squeezereturning machine lifting device adjusts the height through the telescopic oil cylinder to ensure the normal operation of the squeezereturning machine, thereby improving the operation efficiency of the squeezereturning machine. Since the squeezereturning machine lifting device has high automation degree and simple operation, the labor intensity is reduced. The main part adopts the group welding box structure and is rigidly connected by positioning pins and bolts. The tail part adopts the cast welding structure and is connected by dumbbells. The squeezereturning machine has the characteristics of high connection strength, long service life, high power, large capacity, high reliability and the like. The groove bottom plates of the bridge groove, the hinged groove, the push seat groove and the lifting groove are optimized into the plug-in type, the bottom flange connecting plate is added at the bottom, the drawer type side-drawing plug-in plate is arranged on the side surface of the bottom plate, the occurrence of coal leakage is reduced, and the efficiency of coal mine transportation is improved. The split convex groove is adopted, which facilitates the replacement of seriously worn parts on site, and each part can be produced as a spare part, thereby reducing the investment of the mine and saving costs. The top sealing plate is installed at the landing section, the reinforcing ribs are arranged on the back surface of the top sealing plate, the workers can work on the machine body without falling into the squeezereturning machine, which is convenient and safe. Meanwhile, the top sealing plate is modified into a folding type observation window with a handle, which is very convenient without removing the top sealing plate when the equipment is maintained and the roadway is cleaned. The detachable movable cable support is adopted, which can realize flexible installation of the cable through cooperation with the cable hook on the middle groove surface, thereby simplifying the cable line structure on the work site and improving the cable laying speed. The auxiliary coal loading device is additionally arranged between the open skylight middle groove and the unloading groove, which can timely extrude the coal and other materials into the squeezereturning machine chute, facilitate the squeezereturning machine to transport the coal, effectively solve the problem of coal blocking and stacking of the squeezereturning machine, reduce the labor intensity of the workers, and improve the work efficiency. The upper edge cover plate is arranged on the tail, the thickness of the upper edge is increased, the plates of the frame body are thickened within the normal range and the material quality is improved, the service life of the tail is increased, the skylight is arranged above the tail shield, and the bottom chain and the coal blocking condition at the tail can be detected and treated.The rotary part is increased with a pulverized coal unloading window to avoid large amount of accumulated pulverized coal; the machine tail shaft group adopts centralized oil tank storage oil thin oil lubrication, the side oil injection is changed to upper oil injection, the oil injection nozzles on both sides are led to the upper part of the high baffle by steel pipes, and oil is directly added to the shaft group on the upper part of the machine tail frame, which is not affected by space and machine tail position, and facilitates the machine tail lubrication work; the machine head frame front opening lower part is provided with an unloading guide chute baffle and a buffer device to prevent load deviation of the conveying belt and reduce the impact on the conveying belt. The crossheading scraper conveyor provided in the application focuses on convenient disassembly and maintainability, optimizes and transforms the machine head sealing bottom plate, arch bridge section bridge groove bottom plate and chute cover plate structure, adopts split type convex grooves, detachable movable cable support, double-stretch split type chain wheels and upper oil injection lubrication, and additionally adds telescopic lifting and auxiliary coal loading devices to adapt to the needs of continuous production and maintenance conditions of the coal mine, thereby better serving the mine production, and has the characteristics of high automation, high connection strength, long service life, high power, large capacity, high reliability and the like, and has strong practicability.

[0126] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0127] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0128] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0129] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, it is intended that such additions and modifications be included within the scope of the application. It is the following claims, including any amendments thereto, which define the scope of the application.

[0130] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A flight scraper rehandler for use in an entryway, characterized in that, The utility model relates to a kind of machine head and tail of continuous conveying machine, including: Main body part, including sequentially connected lap joint unloading section (1), arch bridge section (2) and climbing section (3); Tail section, including sequentially connected landing section (4) and tail (5); Head transmission part (10) is arranged in any side of the lap joint unloading section (1); Lap joint unloading section (1), arch bridge section (2), climbing section (3), landing section (4) and tail (5) are provided with continuous chute; Sprocket assembly (54), including head sprocket (104) and tail sprocket (545), the head sprocket (104) is rotatably arranged on the lap joint unloading section (1), the output end of the head transmission part (10) is connected with the head sprocket (104) transmission, the tail sprocket (545) is rotatably arranged on the tail (5), the head sprocket (104) and tail sprocket (545) are annularly closed and wrapped with scraper chain (105), and the scraper chain (105) is slidably arranged in the chute; The bottom plate (112) is arranged below the middle plate (111) of the chute, and the left and right side plates are respectively connected on the two sides of the middle plate (111) and the bottom plate (112).

2. The scraper rehandler for a crossheading according to claim 1, characterized in that, The lap joint unloading section (1) includes: Front rack (11), the front end of front rack (11) is provided with front opening, the head sprocket (104) is rotatably arranged on the front rack (11) through the front opening, the unloading guide chute baffle and the buffer device (117) are installed below the front opening of the front rack (11), the coupling pad frame (118) is arranged outside the left and right side plates of the front rack (11), and the head transmission part (10) can be installed on any side of the front rack (11) through the coupling pad frame (118) as needed; Rear groove body (12), the two sides of which are respectively provided with telescopic oil cylinder (121), the front rack (11) is slidably connected with the rear groove body (12), and the two ends of the telescopic oil cylinder (121) are respectively hingedly connected with the rear groove body (12) and the front rack (11); Walking part (13) is arranged at the bottom of the front rack (11), the bottom plate (112) of the chute of the front rack (11) is provided with a clamp (113), the walking part (13) is connected with the front rack (11) through the clamp (113), the front section of the bottom plate (112) of the chute of the front rack (11) is bent downward, and the front end of the bottom plate (112) of the chute of the front rack (11) is provided with a round steel (1121).

3. The entry chute flight transfer conveyor of claim 1, wherein, The head sprocket (104) and tail sprocket (545) include: The outer spline (543) is outwardly extended at the two ends of the sprocket shaft (546) respectively; Split chain tooth, including upper split chain tooth (547) and lower split chain tooth (548), the upper split chain tooth (547) and the lower split chain tooth (548) are fitted on the sprocket shaft (546) after splicing, and the upper split chain tooth (547) and the lower split chain tooth (548) are connected through bolts (544) after splicing.

4. The entry chute flight transfer conveyor of claim 1, wherein, The arch bridge section (2) includes: A bridging groove (21) is connected to the tail end of the lap unloading section (1), and the tail end of the bridging groove (21) is connected to the head end of the climbing section (3), and the side of the chute bottom sealing plate (112) of the bridging groove (21) is slidingly connected with a movable plug-in plate (211); A telescopic lifting device (22) is arranged at the bottom of the bridging groove (21), and the telescopic lifting device (22) comprises: A bracket (223) is connected to the tail end of the chute bottom sealing plate (112) of the bridging groove (21); A base (221) is arranged below the bracket (223); A push cylinder (222) is hingedly connected to the base (221) and the bracket (223) at both ends.

5. The entry chute flight transfer conveyor of claim 1, wherein, The climbing section (3) comprises: A convex groove (31) is connected to the tail end of the arch bridge section (2); A concave groove (33) is connected to the head end of the landing section (4); A multi-section inclined hinged groove (32) is connected to the convex groove (31) and the concave groove (33) at both ends; The middle plate and the bottom plate on the convex groove (31) and the concave groove (33) are thickened; The convex groove (31) is a detachable split type, comprising three movable upper groove bodies (312) and one large circular arc bottom groove (311), the three movable upper groove bodies (312) are arranged on the bottom groove (311), the bottom of the movable upper groove body (312) is connected to the bottom groove (311), and the adjacent two movable upper groove bodies (312) are connected by screwing.

6. The entry chute flight transfer conveyor of claim 1, wherein, The landing section (4) comprises: A push seat groove (41), a lifting groove (42), an adjusting groove (43), a skylight middle groove (44), and a discharging groove (45) are sequentially connected, the head end of the push seat groove (41) is connected to the tail end of the climbing section (3), and the tail end of the discharging groove (45) is connected to the head end of the tail section (5); The top sealing plates (442) on the top of the push seat groove (41), the lifting groove (42), the adjusting groove (43), and the skylight middle groove (44) are provided with handles, and the top sealing plate (442) on the skylight middle groove (44) is provided with a foldable window (443); A I-shaped steel (441) is welded below the top sealing plate (442) at the head end of the skylight middle groove (44), and the I-shaped steel (441) has the same width as the skylight middle groove (44); A plurality of lower rib plates (444) are arranged below the top sealing plates (442) of the skylight middle groove (44).

7. The scraper reclaimer for a gangway as claimed in claim 6 wherein, A plurality of detachable movable cable supports (40) are arranged at intervals on the top sealing plates (442) of the adjusting groove (43) and the skylight middle groove (44), the movable cable support (40) comprises a lower frame body (401) and an upper frame body (402), the bottom of the lower frame body (401) is connected to the top sealing plate (442), the upper frame body (402) is connected to the lower frame body (401) by bolts, and a wire pressing bolt is arranged on the top inner side of the upper frame body (402).

8. The entry chute flight transfer conveyor of claim 6 wherein, An auxiliary coal loading device is arranged between the skylight middle groove (44) and the discharging groove (45), and the auxiliary coal loading device comprises: A fixed coal baffle (446) is installed on one side of the tail end of the central slot (44) of the open skylight; An active coal baffle (447) is hinged at one end to the tail end of the fixed coal baffle (446); A hydraulic oil cylinder (448) is hinged at both ends to the fixed coal baffle (446) and the active coal baffle (447).

9. The entry chute flight transfer conveyor of claim 6 wherein, The tail (5) comprises: A tail frame, the head end of which is connected to the discharge chute (45), the tail end of which is provided with a tail shield, the tail sprocket (545) is installed in the tail shield, an observation window (57) is formed in the top of the tail shield, and a pulverized coal discharge window (52) is arranged at the tail of the tail shield; The sprocket shaft (546) of the tail sprocket (545) is rotatably arranged on the two side plates at the tail end of the tail frame through bearings, and end covers (53) are arranged on the outer sides of the two bearings; An oil tank (56) is arranged on the raised baffle (55) on the upper edges of the two sides of the tail frame, a dynamic vernier (563) is arranged on the oil tank (56), a first exhaust hole (561) and a first oil filling hole (562) are arranged on the top cover of the oil tank (56), the first oil filling hole (562) is in communication with the inside of the oil tank (56), an oil filling pipeline is connected below the oil tank (56), an exhaust pipeline is connected to the first exhaust hole (561), a second exhaust hole (531) and a second oil filling hole (532) are arranged on each of the two end covers (53), the two second exhaust holes (531) are connected in series and communicated with the exhaust pipeline, and the two second oil filling holes (532) are connected in series and communicated with the oil filling pipeline.

10. The scraper reclaimer for a bench as claimed in claim 3, wherein, The head transmission part (10) comprises a double-speed motor (101) and a planetary reducer (103); A motor coupling disc (102) is connected to the double-speed motor (101) and the planetary reducer (103) through flanges at both ends, and the output shaft of the double-speed motor is connected in transmission with the planetary reducer (103); An inner spline is formed on the output shaft of the planetary reducer (103), the chain sprocket shaft (546) is connected to the output shaft of the planetary reducer (103) through an outer spline (543), and the inner spline is engaged with the outer spline (543).

Images