Wheel type crusher for crossheading

Abstract

The wheel type crusher for the crossheading comprises an integral bottom groove, and an inlet frame, a crushing box, an output box and an outlet frame which are sequentially arranged on the integral bottom groove to form an integral rack; the hammer shaft assembly comprises a hammer seat arranged in the crushing box and a hammer head hinged to the hammer seat, and the hammer seat is rotationally connected with the crushing box through a main shaft; the transmission device is arranged on the output box and is in transmission connection with the main shaft; and the height adjusting device can adjust the distance between the hammer head and the integral bottom groove. According to the crusher provided by the invention, rigid connection between the hammer head and the hammer seat is changed into rotary hinging, so that the impact loss is reduced; the hammer head structure is optimized, and the hammer head strength and service life are improved; the adjusting base plates are designed in sections and staggered, and the joints with the bolts adopt opening structures, so that mounting and dismounting are convenient; the oil injection port and the exhaust port are additionally arranged on the main shaft and the bearing cover of the transmission device bearing, so that the injection amount and flowability of grease are increased, dirt such as coal slime in the grease is discharged, oil hole blockage is avoided, and the crusher is suitable for the field of crushers.

Description

Technical Field

[0001] This application relates to the field of crushers, specifically to wheel crushers for roadways. Background Technology

[0002] The wheel crusher for the roadway is used in conjunction with the roadway transfer conveyor, and works in conjunction with the scraper conveyor, coal mining machine, hydraulic support, and belt conveyor at the working face to achieve integrated mechanized coal mining, crushing, and transportation.

[0003] Most existing crusher hammers and hammer bases are fixedly connected, resulting in significant impact reaction forces between the connected components. Repeated impacts can loosen the threads, and the impact force is directly transmitted to the main shaft and bearings, reducing the service life of these parts. When encountering large pieces of gangue, the hammers may experience jamming or jamming. The high-speed rotating crusher hammers release a large amount of impact energy upon contact with large pieces of raw coal. Normally pre-tightened bolts are prone to fatigue damage under cyclic alternating loads. The hammer's fastening bolts and nuts loosen due to continuous vibration, and insufficient timely maintenance can easily cause the hammers to fall off. The maximum output particle size of the machine is adjusted by using a hydraulic pump to lift the hammer shaft and then adjusting the number of shims. However, existing crushers typically have three layers of shims, each consisting of a single section. The pin holes and bolt connection holes on the shims are closed circular holes, making it inconvenient to add or remove shims. During crusher operation, due to the unreasonable structure of the oil injection holes on the bearing housing, high-viscosity grease needs to enter from the end face of the bearing housing and then be injected into the interior through the small oil hole on the outer ring of the bearing. This oil injection process is complex, and the grease is prone to mixing with coal dust and clogging the oil holes, making subsequent grease injection more difficult, leading to insufficient oil and bearing damage. Summary of the Invention

[0004] To address one of the aforementioned technical deficiencies, this application provides a wheel crusher for roadway use, comprising:

[0005] The overall frame includes an integral bottom trough, on which an inlet frame, a crushing box, an output box, and an outlet frame are sequentially arranged.

[0006] The hammer shaft assembly includes a hammer seat and a hammer head disposed inside the crushing box. The hammer head is hinged to the hammer seat, and the hammer seat is rotatably connected to the crushing box via the main shaft.

[0007] The transmission device is installed on the output box, and the main shaft extends out of the crushing box and is connected to the output end of the transmission device for transmission.

[0008] The height adjustment device is located on both sides of the crushing box. The height adjustment device can adjust the distance between the hammer and the overall bottom trough.

[0009] The hammerhead includes:

[0010] The hammerhead base has a through hole at one end that is hinged to the hammer seat. The hammerhead base is hinged to the hammer seat after the hammerhead pin is inserted into the through hole.

[0011] Vertical steps are provided on both sides of the working end of the hammer head base, and a square strip of wear-resistant block is provided in the vertical steps.

[0012] The upper surface of the wear-resistant block has multiple machining grooves, and wear-resistant strips are installed in the machining grooves.

[0013] The hammer base includes:

[0014] The upper and lower hammer seats are assembled and connected by bolts. The upper and lower hammer seats are assembled to form a square connecting hole in the middle. The main shaft is inserted into the square connecting hole and connected to the hammer seat.

[0015] Multiple outer hammer discs are spaced apart on the upper or lower hammer base, and the hammer heads are hinged between two adjacent outer hammer discs via hammer head pins;

[0016] A pin hole, perpendicular to the axial direction of the hammer pin shaft, is opened on the outer hammer disc. A positioning pin shaft is inserted into the pin hole to limit the hammer pin shaft.

[0017] D-shaped holes are formed on the two outermost outer hammer discs. D-shaped blocks are embedded in the D-shaped holes to limit the hammer head pin.

[0018] Furthermore, the hammer shaft assembly includes:

[0019] Two second bearing seats are respectively embedded in the two side plates of the crushing box;

[0020] The hammer seat is located between two second bearing seats, and the two ends of the main shaft pass through the second bearing seats and are connected to large pulleys on the outside of the two side plates of the crushing box.

[0021] Multiple hammerheads are symmetrically arranged on the outer circumference of the hammer base.

[0022] Furthermore, the height adjustment device includes:

[0023] The bottom plate of the box, the inlet frame, the crushing box, the output box and the outlet frame are connected by flanges to form the box assembly. The bottom plate of the box is set between the box assembly and the overall bottom groove. The box assembly, the bottom plate of the box and the overall bottom groove are detachably connected by mounting bolts.

[0024] A support cylinder is provided in front of the inlet frame and behind the outlet frame. The top of the inlet frame and the outlet frame are provided with cylinder mounting seats extending outward. The top of the support cylinder is hinged to the cylinder mounting seat, and the bottom of the support cylinder is hinged to the integral bottom groove.

[0025] The lifting rod has multiple pin holes arranged vertically at intervals. The bottom of the lifting rod is connected to the top of the second bearing seat, which is vertically slidably mounted on the side plate of the crushing box.

[0026] An adjustment frame is installed on the top of the side plate of the crushing box. Multiple pin holes arranged vertically are spaced apart on both sides of the adjustment frame. The lifting rod can be vertically slidably installed in the adjustment frame. The lifting rod is positioned by aligning the pin hole of the lifting rod with the pin hole of the adjustment frame and inserting the lifting rod pin.

[0027] Hydraulic jacks are installed on the bottom plates of the crushing box on both sides, and the top of the hydraulic jacks is connected to the bottom of the second bearing seat.

[0028] Multi-layer adjustment pads can be placed between the bottom plate of the box and the overall bottom groove.

[0029] Furthermore, each layer of adjustment pads includes:

[0030] The pad consists of multiple segments, with adjacent segments staggered to form a break. Each segment has multiple connecting holes with open structures spaced apart.

[0031] Furthermore, the transmission device includes:

[0032] A bracket is installed on the top of the output box, and a motor base is slidably mounted on the bracket;

[0033] A motor connection plate is mounted on a motor base, and a motor is mounted on one side of the motor connection plate;

[0034] The first bearing housing is installed on the motor base on the other side of the motor connecting plate;

[0035] A flexible coupling is installed on the first bearing housing, and the output shaft of the motor is connected to the flexible coupling.

[0036] The small pulley is connected to the output end of the flexible coupling;

[0037] A belt tensioning device is mounted on a bracket, and the output end of the belt tensioning device is connected to the motor base;

[0038] A V-belt connects a large pulley and a small pulley via V-belt drive.

[0039] Furthermore, the wheel crusher for roadway use also includes a lubrication system, which includes:

[0040] The manual lubrication pump is installed on the side wall of the output box. The manual lubrication pump is equipped with an oil level indicator, a handle, a pressure gauge and a distribution switch.

[0041] The oil delivery pipe, whose inlet end is connected to the outlet end of the manual lubrication pump, includes:

[0042] The first main pipeline has a first oil inlet and a first vent at both ends of the first bearing housing and bearing cover, and the output end of the first main pipeline is connected to the first oil inlet.

[0043] The second main pipeline has two branch pipelines at its output end, which are located on the bearing cover of the second bearing housing. The two ends are respectively provided with a second oil inlet and a second vent. The output ends of the two branch pipelines are respectively connected to the second oil inlets of the second bearing housing on both sides. A first ball valve and a second ball valve are respectively installed on the two branch pipelines.

[0044] Furthermore, a spraying device is installed on the top of both the crushing chamber and the output chamber. The spraying device includes:

[0045] A square water pipe is installed on top of the crushing or output box;

[0046] Multiple nozzles are spaced apart on a square water pipe;

[0047] The connector is located at one end of the square water pipe and is connected to the external high-pressure water supply. The other end of the square water pipe is sealed with a plug.

[0048] Furthermore, protective chains and curtains are installed at both the entrance and exit racks, with the curtains located on the outside of the protective chains;

[0049] The protective chain includes a steel plate installed on top of the entrance or exit frame, with multiple chain link openings cut into the steel plate, and a chain threaded through the chain link openings using round steel bars;

[0050] The curtain is bolted to the inlet end of the crushing box and the outlet end of the output box.

[0051] The wheel crusher for roadway use provided in this application replaces the rigid connection between the traditional hammer and hammer base with a rotating hinge. Multiple limiting devices are used to limit the hammer pin, ensuring the hammer remains stable and less prone to falling off under impact, effectively reducing wear on the main shaft and bearings. The hammer structure is optimized by comprehensively employing a combination of "double-layer wear-resistant + hammer body stepped design + symmetrical design" to improve its strength and extend its lifespan. The adjusting shims are segmented and staggered, abandoning the traditional closed circular hole structure; the bolt connections use an open structure to facilitate the installation and removal of the adjusting shims.

[0052] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by way of what is pointed out in the written description, claims, and drawings. Attached Figure Description

[0053] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0054] Figure 1 This is a schematic diagram of the overall structure of the wheel crusher for roadway use provided in an embodiment of this application;

[0055] Figure 2 This is a schematic diagram of the transmission device provided in the embodiments of this application;

[0056] Figure 3 This is a schematic diagram of the hammer shaft assembly provided in an embodiment of this application;

[0057] Figure 4 This is a schematic diagram of the hammer head structure provided in an embodiment of this application;

[0058] Figure 5 A cross-sectional view of the hammerhead provided in an embodiment of this application;

[0059] Figure 6 This is a schematic diagram of the hammer holder provided in an embodiment of this application;

[0060] Figure 7 This is a schematic diagram of hammer shaft height adjustment provided in an embodiment of this application;

[0061] Figure 8 This is a schematic diagram of the structure of the entrance / exit frame provided in the embodiments of this application;

[0062] Figure 9 This is a schematic diagram of the structure of the spraying device provided in the embodiments of this application;

[0063] Figure 10 This is a schematic diagram of the structure of the lubrication system provided in the embodiments of this application;

[0064] Among them, 1 is the overall frame, 10 is the overall bottom trough, 101 is the concave-convex interface, 102 is the lifting lug, 11 is the inlet frame, 111 is the baffle curtain, 112 is the protective chain, 12 is the crushing box, 121 is the crushing box cover, 1211 is the adjusting frame, 1212 is the lifting rod pin, 1213 is the inspection window, 122 is the unloading block, 13 is the output box, 14 is the outlet frame, 15 is the stepping self-moving connection point, 2 is the transmission device, 21 is the small pulley, 2 2 is the belt tensioning device, 23 is the bracket, 24 is the motor connecting plate, 25 is the flexible coupling, 26 is the first bearing housing, 261 is the first oil inlet, 262 is the first vent, 27 is the V-belt, 3 is the hammer shaft assembly, 31 is the second bearing housing, 311 is the second oil inlet, 312 is the second vent, 32 is the main shaft, 33 is the hammer seat, 331 is the upper hammer seat, 332 is the lower hammer seat, 333 is the D-shaped hole, and 334 is the square connection. Hole 335 is a pin hole, 34 is a hammer head, 341 is a hammer head base, 342 is a vertical step, 343 is a wear-resistant block, 344 is a machining groove, 345 is a wear-resistant strip, 35 is a large pulley, 4 is a height adjustment device, 41 is a hanging rod, 42 is the bottom plate of the housing, 43 is an adjusting shim, 431 is the first layer shim, 432 is the second layer shim, 433 is the third layer shim, 434 is the shim break, 435 is a connecting hole, and 436 is a mounting screw. 44 is the hydraulic cylinder support, 45 is the hydraulic jack, 5 is the spray device, 51 is the square water pipe, 52 is the nozzle, 53 is the connector, 54 is the plug, 6 is the lubrication system, 61 is the manual lubrication pump, 611 is the oil level indicator rod, 612 is the handle, 613 is the pressure gauge, 614 is the distribution switch, 62 is the oil supply pipe, 621 is the first main pipeline, 622 is the second main pipeline, 6221 is the first ball valve, and 6222 is the second ball valve. Detailed Implementation

[0065] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0066] In the process of realizing this application, the inventors discovered that the wheel crusher for the roadway is used in conjunction with the roadway transfer conveyor, and works in conjunction with the scraper conveyor, coal mining machine, hydraulic support, and belt conveyor at the working face to achieve integrated mechanized coal mining, crushing, and transportation.

[0067] Most existing crusher hammers and hammer bases are fixedly connected, resulting in significant impact reaction forces between the connected components. Repeated impacts can loosen the threads, and the impact force is directly transmitted to the main shaft and bearings, reducing the service life of these parts. When encountering large pieces of gangue, the hammers may experience jamming or jamming. The high-speed rotating crusher hammers release a large amount of impact energy upon contact with large pieces of raw coal. Normally pre-tightened bolts are prone to fatigue damage under cyclic alternating loads. The hammer's fastening bolts and nuts loosen due to continuous vibration, and insufficient timely maintenance can easily cause the hammers to fall off. The maximum output particle size of the machine is adjusted by using a hydraulic pump to lift the hammer shaft and then adjusting the number of shims. However, existing crushers typically have three layers of shims, each consisting of a single section. The pin holes and bolt connection holes on the shims are closed circular holes, making it inconvenient to add or remove shims. During crusher operation, due to the unreasonable structure of the oil injection holes on the bearing housing, high-viscosity grease needs to enter from the end face of the bearing housing and then be injected into the interior through small oil holes on the outer ring of the bearing. This oil injection process is complex, and the grease is prone to mixing with coal dust and clogging the oil holes, making subsequent grease injection more difficult, leading to insufficient oil and bearing damage.

[0068] To address the aforementioned issues, this application provides a wheel crusher for roadway use, such as... Figure 1 As shown, it includes:

[0069] The overall frame 1 includes an integral bottom trough 10, on which an inlet frame 11, a crushing box 12, an output box 13 and an outlet frame 14 are sequentially arranged. The inlet frame 11, the crushing box 12, the output box 13 and the outlet frame 14 form a crushing chamber.

[0070] The hammer shaft assembly 3 includes a hammer seat 33 and a hammer head 34 disposed in the crushing box 12. The hammer head 34 is hinged to the hammer seat 33. The hammer seat 33 is rotatably connected to the crushing box 12 via the main shaft 32. The top of the crushing box 121 is provided with a crushing box cover 121. The crushing box cover 121 is provided with an inspection window 1213 that is easy to disassemble and assemble.

[0071] The transmission device 2 is installed on the output box 13, and the main shaft 32 extends out of the crushing box 12 and is connected to the output end of the transmission device 2.

[0072] The height adjustment device 4 is located on both sides of the crushing box 12. The height adjustment device 4 can adjust the distance between the hammer 34 and the overall bottom trough 10.

[0073] Specifically, this chute uses a wheel crusher (hereinafter referred to as the crusher) in conjunction with a chute transfer conveyor. Connection holes for the transfer conveyor baffles are arranged at the input and output ends of the crusher housing, allowing for bolt connection. Simultaneously, the input end of the crusher housing 12 has a pre-set convex-concave interface 101 for positioning with the middle section of the transfer conveyor trough. This creates a rigid connection between the crusher and the transfer conveyor, making the connection quick and convenient, greatly improving the stability and connection strength of the crusher, and reducing transition links and unnecessary wear. The side of the integral bottom trough 10 is equipped with lifting lugs 102. For easy lifting during assembly and disassembly; to ensure continuous mining of the working face, a pair of stepping self-moving connection points 15 are set on both sides of the crushing box 12 to be used in conjunction with the transfer machine. When it is necessary to move the crusher, the crusher is lifted by these points. With the cooperation of the pulling and moving device, the crusher and the transfer machine can move forward in the roadway. During the coal mining process, the pulling and moving device lifts the crusher as a whole, so that the crusher is separated from the bottom plate of the roadway, changing the sliding friction between the crusher and the bottom plate to rolling friction, reducing the pushing resistance at this point, and making it more suitable for the working conditions of the roadway on both uphill and downhill slopes.

[0074] In practical implementation, coal and gangue produced at the longwall face are transported via a scraper conveyor in the roadway to the unloading section of the transfer conveyor installed in the roadway. The wheel crusher for the roadway provided in this application is installed in the middle of the unloading section and the climbing section of the transfer conveyor, and can also be used as part of the transfer conveyor to crush large pieces of material transported by the transfer conveyor. The large pieces of material to be crushed are transported by the transfer conveyor and continuously enter the crusher from the inlet frame 11. The transmission device 2 drives the main shaft 32 to transfer kinetic energy to the hammer shaft assembly 3. The high-speed rotating hammers 34 impact and cut the coal and gangue. Then, the speed difference between the hammer seat, the scraper chain, and the crusher further crushes and pulls the coal, thereby achieving the purpose of continuous coal crushing.

[0075] The wheel crusher for roadways provided in this application is used in conjunction with a roadway transfer conveyor to crush large pieces of material transported by the transfer conveyor. Unlike traditional crushers that use a fixed connection between the hammer and the hammer base, this crusher innovatively hinges the hammer to the hammer base. The swingable hammer effectively reduces the impact between the hammer and the hammer base during crushing, avoiding problems such as large impact reaction forces between connected parts, easy loosening of threads after repeated impacts, and direct transmission of impact force to the main shaft and bearings, which reduces the service life of related parts, as in fixed connection methods. The distance between the hammer 34 and the integral bottom trough 10 can be adjusted by the height adjustment device 4, thereby controlling the maximum output coal particle size of the crusher.

[0076] As a preferred option, such as Figure 3 As shown, the hammer shaft assembly 3 includes:

[0077] Two second bearing seats 31 are respectively embedded in the two side plates of the crushing box 12;

[0078] The hammer seat 33 is located between two second bearing seats 31. The two ends of the main shaft 32 pass through the second bearing seats 31 and are connected to the outer side of the two side plates of the crushing box 12 by a large pulley 35 with counterweight. The large pulley 35 is connected to the output end of the transmission device 2.

[0079] Multiple hammerheads 34 are symmetrically arranged on the outer circumference of the hammer base 33, with the working ends of the hammerheads 34 facing away from the outer circumference of the hammer base 33.

[0080] In practical implementation, both ends of the main shaft 32 use large pulleys 35 side structures, so that both ends can be used as input ends. When one large pulley is used as the input end, the other large pulley is used as the counterweight end. When the working surface changes direction, only the connection direction of the motor at the top of the frame needs to be changed, without disassembly and reassembly. This ensures the dynamic balance of the whole machine and saves operation time. The number of hammers 34 can be set to an even number greater than or equal to 2, symmetrically arranged on the outer circumference of the hammer base 33. The hammers 34 on the top and bottom sides of the hammer base 33 are symmetrically arranged about the main shaft 32. Figure 3 As shown, the preferred number of hammerheads 34 is 4, with 2 in each row, arranged on the outer circumference of the hammer base 33. The hammerhead assembly 3 is designed as a symmetrical structure, which can effectively solve the problem of unbalanced weight on one side and maintain dynamic balance to a great extent. The new structure of the hammerhead assembly 3 reduces the labor intensity of hammerheads in the well, improves installation efficiency, and reduces safety risks.

[0081] As a preferred option, such as Figure 4 , Figure 5 As shown, the hammerhead 34 includes:

[0082] The hammer base 341 has a through hole at one end that is hinged to the hammer seat 33. The hammer base 341 is hinged to the hammer seat 33 after the hammer pin is inserted into the through hole. The hammer pin is parallel to the main shaft 32.

[0083] Vertical steps 342 are provided on both sides of the working end of the hammerhead base 341, and two wear-resistant blocks 343 of the same size and shape are welded into the two vertical steps 342 respectively.

[0084] The upper surface of the wear-resistant block 343 has multiple machining grooves 344, and wear-resistant strips 345 are welded into the machining grooves 344.

[0085] Specifically, the hammerhead base 341 is preferably cast from ZG30MnSi, with two vertical steps 342 symmetrically arranged. When welding the wear-resistant block 343, the vertical steps 342 can effectively fit against the two vertical surfaces of the square wear-resistant block 343. On the one hand, the horizontal and vertical surfaces can share the impact force transmitted to the hammerhead 34 during crushing operations. On the other hand, welding from two directions can effectively increase the number of welds, making the welded wear-resistant block 343 more robust. The wear-resistant block is preferably made of high-strength wear-resistant material (such as HARDOX500) to protect the hammerhead base 341 from damage. The wear-resistant strip 345 is preferably made of impact-resistant hard alloy material. This wear-resistant strip has the characteristics of high hardness, high strength, wear resistance, and good toughness, which can effectively reduce the direct impact on the first layer of wear-resistant blocks 343 during hammer operation and alleviate some of the crushing impact force.

[0086] The hammerhead incorporates a "double-layer wear-resistant design + stepped hammer body design + symmetrical design" structure. Composed of several welded parts, the hammerhead's manufacturing quality is effectively guaranteed, significantly reducing the likelihood of wear-resistant blocks falling off during operation and effectively extending its service life. Optimization of the hammerhead further reduces the impact force on the pin shaft when striking materials, preventing jamming that could occur due to the hardness of the gangue during crushing. The hammerhead features a reversible symmetrical structure; when one side reaches its wear limit, it can be rotated 180° and reused, effectively doubling the wear reduction and further extending its service life.

[0087] As a preferred option, such as Figure 6 As shown, the hammer base 33 includes:

[0088] The upper hammer seat 331 and the lower hammer seat 332 are assembled and connected by bolts. The upper hammer seat 331 and the lower hammer seat 332 form a square connecting hole 334 in the middle. The cross-section of the main shaft 32 is square and matches the square connecting hole 334. After the main shaft 32 is inserted into the square connecting hole 334, it is connected to the hammer seat 33.

[0089] Multiple outer hammer discs are spaced apart on the upper hammer seat 331 or the lower hammer seat 332, and the hammer head 34 is hinged between two adjacent outer hammer discs by hammer head pins.

[0090] The pin hole 335 is opened on the outer hammer plate perpendicular to the axial direction of the hammer head pin shaft. A positioning pin shaft is inserted into the pin hole 335 to limit the hammer head pin shaft.

[0091] D-shaped holes 333 are formed on the two outermost hammer discs (i.e., the side closest to the large pulley 35). D-shaped blocks are embedded in the D-shaped holes 333 to limit the hammer head pin.

[0092] In practical implementation, the hammer holder 33 is designed as a split type, consisting of an upper hammer holder 331 and a lower hammer holder 332 assembled together, forming a square connecting hole 334 in the middle and connected as a whole by high-strength bolts. The hammer holder 33 with this structure is easy to cast, easy to process, and easy to install. The main shaft 32 passes through the square connecting hole 334 and forms a square connection with the hammer holder 33, which is easy to install, has high strength, and is not prone to failures such as keyway failures. A positioning pin is added to each hammer head pin shaft, and the positioning pin shaft passes through the pin hole 335 into the outer hammer plate to limit the hammer head pin shaft and prevent it from moving. A D-shaped hole 333 is made on the outer hammer plate on the side near the pulley, and a D-shaped block is used to fix the hammer head pin shaft so that the hammer head pin shaft cannot rotate, further completing the limitation of the hammer head pin shaft and ensuring the stability of the hammer head 34 during crushing operations.

[0093] As a preferred option, such as Figure 7 As shown, the height adjustment device 4 includes:

[0094] The bottom plate 42 of the box, the inlet frame 11, the crushing box 12, the output box 13 and the outlet frame 14 are connected by flanges to form the box assembly. The bottom plate 42 of the box is set between the box assembly and the integral bottom groove 10. The box assembly, the bottom plate of the box and the integral bottom groove 10 are detachably connected by mounting bolts 436.

[0095] Four supporting hydraulic cylinders 44 are arranged in pairs, respectively in front of the inlet frame 11 and behind the outlet frame 14. The tops of the inlet frame 11 and the outlet frame 14 extend outward from the box assembly and are connected to horizontally arranged hydraulic cylinder mounting seats. The top of the supporting hydraulic cylinder 44 is hinged to the hydraulic cylinder mounting seat, and the bottom of the supporting hydraulic cylinder 44 is hinged to the integral bottom groove 10 directly below the hydraulic cylinder mounting seat.

[0096] The lifting rod 41 has a number of pin holes arranged vertically at intervals on its straight rod portion. The bottom of the lifting rod 41 is connected to the top of the second bearing seat 31. The second bearing seat 31 is vertically slidably mounted on the side plate of the crushing box 12.

[0097] Multiple unloading blocks 122 are provided. A vertical groove is provided on the side plate of the crushing box 12. The second bearing seat 31 is slidably disposed in the groove. There is a gap between the two side walls of the second bearing seat 31 and the two side walls of the groove. The multiple unloading blocks 122 overlap and fill the gap on both sides. One end of the unloading block 122 is threadedly connected to the side wall of the groove. By twisting the unloading block 122, the unloading block 122 can be extended towards the side wall of the second bearing seat 31 until the other end of the unloading block 122 abuts against the side wall of the second bearing seat, thus completing the pressing of the second bearing seat 31.

[0098] An adjusting frame 1211 is installed on the top of the side plate of the crushing box 12. Multiple pin holes arranged vertically are spaced apart on both sides of the adjusting frame 1211. The lifting rod 41 can be vertically slidably set in the adjusting frame 1211. The lifting rod 41 is positioned by aligning the pin hole of the lifting rod 41 with the pin hole of the adjusting frame 1211 and inserting the lifting rod pin 1212.

[0099] Hydraulic jacks 45 are installed on the bottom plates 42 of the box body on both sides of the crushing box 12. The top of the hydraulic jacks 45 is connected to the bottom of the second bearing seat 31.

[0100] The multi-layer adjustment pad 43 can be placed between the bottom plate 42 of the box and the overall bottom groove 10.

[0101] In practice, under normal conditions, the crusher's housing assembly, housing base plate 42, and integral bottom trough 10 are fastened together by mounting bolts 436. When it is necessary to increase the maximum output particle size of the crusher, the crusher is heightened. The lifting rod pin 1212 is pulled out, and the unloading block 122 is loosened and removed. The hydraulic jack 45 is activated to raise the hammer shaft assembly 3 to the set height. The lifting rod 41 is raised to the set position in the adjusting frame 1211. After the pin hole of the straight rod of the lifting rod 41 is realigned with the pin hole of the adjusting frame 1211, the lifting rod pin 131 is inserted back in. 212, the two sides of the second bearing seat 31 are tightened again with the unloading block 122, and the hydraulic jack 45 automatically releases the pressure; loosen the mounting bolt 436, disconnect the connection between the housing assembly and the integral bottom groove 10, start the support cylinder 44, and lift the housing assembly to the set height. At this time, the housing bottom plate 42 is lifted away from the integral bottom groove 10. Add multiple layers of adjusting shims 43 between the housing bottom plate 42 and the integral bottom groove 10, and then use the mounting bolt 436 to fasten the housing assembly, housing bottom plate 42, multiple layers of adjusting shims 43 and integral bottom groove 10 together to complete the height adjustment.

[0102] When it is necessary to reduce the maximum output particle size of the crusher, the crusher is adjusted by lowering it, changing the raising operation to lowering it, and changing the addition of adjusting shims to reducing the adjusting shims. This will not be elaborated further here.

[0103] As a supplement to the above preferred embodiment, each layer of adjusting pad 43 includes:

[0104] Multiple pads are provided, with adjacent pads staggered to form a pad break 434, and each pad has multiple connecting holes 435 with open structures spaced apart.

[0105] In specific implementation, such as Figure 7As shown, the gap between the top circle of the hammerhead and the crushing plate can be adjusted to four levels (e.g., 300, 250, 200, 150 mm), thus the maximum coal particle size can be adjusted to four levels (e.g., 300, 250, 200, 150 mm). The number of layers of adjusting shims 43 can be determined according to the required coal particle size. Different lengths of mounting bolts 436 (e.g., M30×90, M30×140, M30×200, M30×240) can be selected based on the number of layers of adjusting shims 43.

[0106] Taking the three-layer adjustment pad 43 as an example (each layer is 50mm thick), the first layer pad 431 can be divided into two sections, the second layer pad 432 into three sections, and the third layer pad 433 into two sections. After aligning the connecting holes 435 on the multi-layer adjustment pad 43, insert the mounting bolts 436 and tighten them to fix it.

[0107] The height adjustment device provided in this application adopts a shim-type height adjustment to ensure the concentricity and movement stability of the crushing main shaft. The output particle size of the crusher is adjusted by increasing or decreasing the number of height adjustment shims under the bottom plate of the box. The adjacent two layers of adjustment shims are designed in segments and staggered with each other. The traditional closed round hole structure of the shims is abandoned. The pin holes and bolt connection holes of the adjustment shims are open, which facilitates the installation and disassembly of the adjustment shims. The adjustment operation can be carried out without removing the crushing box and without using external lifting equipment. It is convenient, safe, reliable, time-saving and labor-saving.

[0108] As a preferred option, such as Figure 2 As shown, the transmission device 2 includes:

[0109] A bracket 23 is located on the top of the output box 13, and a motor base is slidably mounted on the bracket 23; a motor connecting plate 24 is mounted on the motor base, and a motor is mounted on one side of the motor connecting plate 24.

[0110] The first bearing housing 26 is mounted on the motor base on the other side of the motor connecting plate 24;

[0111] The flexible coupling 25 is installed on the first bearing housing 26, and the output shaft of the motor is connected to the flexible coupling 25;

[0112] Small pulley 21 is connected to the output end of flexible coupling 25;

[0113] The belt tensioning device 22 is mounted on the bracket 23. The output end of the belt tensioning device 22 is connected to the motor base. The travel direction of the belt tensioning device 22 is consistent with the sliding direction of the motor base.

[0114] V-belt 27, large pulley 35 and small pulley 21 are connected by V-belt 27 for transmission.

[0115] In practical implementation, this crusher uses direct drive with a V-belt, ensuring smooth motor startup and providing a buffering effect in the transmission system, thus facilitating manufacturing and installation. For example... Figure 2 As shown, the motor installed between the bracket 23 and the motor connecting plate 24 drives the small pulley 21 to rotate via the flexible coupling 25. The small pulley is connected to the large pulley 35 via the V-belt 27. The large pulley 35 is the power input component of the entire main shaft 32. During operation, it gives the hammer shaft assembly 3 a large moment of inertia, providing a large amount of energy for crushing coal. The belt tensioning device 22 adjusts the V-belt tension by moving the motor base. After the height adjustment device 4 is in operation, the V-belt tension is readjusted, facilitating repair and adjustment.

[0116] As a preferred option, such as Figure 10 As shown, this crusher also includes a lubrication system 6, which includes:

[0117] The manual lubrication pump 61 is installed on the side wall of the output box 13. The manual lubrication pump 61 is equipped with an oil level indicator rod 611, a handle 612, a pressure gauge 613 and a distribution switch 614.

[0118] Oil supply pipe 62, the inlet of which is connected to the outlet of manual lubrication pump 61, includes:

[0119] The first main pipeline 621 has a first oil inlet 261 on the first bearing housing 26, and the output end of the first main pipeline 621 is connected to the first oil inlet 261.

[0120] The second main pipeline 612 has two branch pipelines at its output end. The second bearing housing 31 is provided with a second oil inlet 311. The output ends of the two branch pipelines are respectively connected to the second oil inlets 311 of the two second bearing housings 31 on both sides. The two branch pipelines are respectively provided with a first ball valve 6221 and a second ball valve 6222.

[0121] In practice, the lubrication system uses a centralized dry oil station for lubrication. The manual lubrication pump 61 is directly and vertically installed on the outer wall of the output box 13. Before assembly, the oil supply pipe 62 must be filled with lithium-based grease. The distribution switch 614 is pushed to the limit position, and the first main pipeline 621 supplies oil to the bearing of the small pulley 21. The swing handle 612 moves back and forth, and the pressure gauge 613 indicates that the pressure value rises and remains stable, and the system completes one oil supply. Pull out the distribution switch 614, open the first ball valve 6221 and close the second ball valve 6222, and the second main pipeline 622 supplies oil to the bearing of the large pulley 35 on the left. After the pressure gauge 613 indicates that the pressure value rises and remains stable, close the first ball valve 6221 and open the second ball valve 6222, and the second main pipeline 622 supplies oil to the bearing of the large pulley 35 on the right. After the oil supply is completed, press the distribution switch back to release the pipeline pressure and prepare for the next cycle. The handle 612 is turned to the vertical position.

[0122] As a supplement to the above-mentioned preferred solution, in order to change the traditional single-hole oil injection method, multiple oil injection ports can be constructed on the bearing cover. This effectively solves the problem that external grease cannot enter the bearing due to blockage of individual oil injection ports. Increasing the inner cavity capacity of the bearing housing ensures sufficient grease inside the bearing, allowing the grease to be directly injected into the bearing's ball bearing parts for adequate lubrication, thereby reducing the possibility of oil hole blockage. A first vent 262 is provided on the first bearing housing 26 at the end opposite to the first oil injection port 261, and a second vent 312 is provided on the second bearing housing 31 at the end opposite to the first oil injection port 311. This not only increases the amount of grease injected and its fluidity, but also serves to remove coal sludge and other dirty oil from the grease, extending the lubrication cycle, reducing the amount of lubrication work, and ensuring reliable lubrication and high oil injection efficiency.

[0123] In the process of developing this application, the inventors discovered that when the crusher is working, the rotation of the crushing shaft causes rapid airflow, which generates a large amount of coal dust. This not only reduces visibility in the workplace and affects normal work, but also has an adverse impact on safety.

[0124] To address the above problems, this application provides a preferred solution, such as... Figure 9 As shown, both the crushing chamber 12 and the output chamber 13 are equipped with spray devices 5 on their tops. The spray devices 5 include:

[0125] A square water pipe 51 is installed on top of the crushing box 12 or the output box 13;

[0126] Multiple nozzles 52 are spaced apart on the square water pipe 51;

[0127] Connector 53 is located at one end of square water pipe 51. Connector 53 is connected to external high-pressure water supply. The other end of square water pipe 51 is sealed with plug 54.

[0128] In practical implementation, the wheel crusher in this roadway is equipped with a set of spray devices 5 on the top of the crushing box cover 121 and the output box 13. Each device consists of a square water pipe 51 with three nozzles 52 mounted on it. One end has a connector 53 for connection to the underground high-pressure water supply (e.g., 1.5 MPa), and the other end is sealed with a plug 54 to prevent leakage. Water from the roadway is directed via hoses to the spray devices 5 located on the crushing box 12 and the output box 13, effectively reducing coal dust during the crushing process, promptly removing dust, minimizing the dust content in the air, and improving the working environment.

[0129] As a preferred option, such as Figure 8 As shown, both the entrance frame 11 and the exit frame 14 are equipped with protective chains 112 and curtains 111, with the curtains 111 located outside the protective chains 112.

[0130] The protective chain 112 is a flexible and adjustable protective chain, including a steel plate set on the top of the entrance frame 11 or the exit frame 14. The steel plate is cut with multiple chain link openings, and a chain is hung on the chain link openings by round steel bars.

[0131] The curtain 111 is bolted to the inlet end of the crushing box 12 and the outlet end of the output box 13.

[0132] In practical implementation, the flexible adjustable protective chain 112 assembly is composed of δ10 steel plate, chain, and φ16 round steel. Seven chain link openings are cut into the steel plate and fixed to the inlet and outlet of the crusher. Then, seven chains are threaded with round steel to form a safe protective net, which plays a role in protecting personnel working in the triangular area of ​​the machine head. Baffle curtains 111 are installed at the inlet and outlet of the box assembly. The outlet and inlet baffle curtains 111 are fastened to the inlet end of the crushing box 12 and the outlet end of the output box 13 with bolts, respectively, to contain the splashed coal particles and coal dust generated during the crushing process inside the box assembly, preventing them from flying out and endangering personal safety and health.

[0133] The wheel crusher for roadways provided in this application creatively replaces the traditional rigid connection between the hammer and the hammer base with a rotating hinge, reducing impact loss. The hammer is optimized by comprehensively employing a combination of "double-layer wear-resistant + hammer body stepped design + symmetrical design" to improve its strength. The hammer adopts a reversible symmetrical structure; when one side reaches its wear limit, it can be rotated 180° and still be used, effectively doubling the wear reduction. The hammer base is designed as two parts, upper and lower, connected by high-strength bolts, making it easy to cast, process, and install. The main shaft and hammer base use a square connection, which is easy to install, has high strength, and is less prone to keyway failures. A shim-type height adjustment device allows for adjustment without removing the crushing box or using external lifting equipment. The adjustment shims are segmented and staggered, abandoning the traditional closed circular hole structure and adopting an open structure, facilitating the installation and removal of the adjustment shims. The crusher is easy to operate, highly safe, and saves time and effort. It changes the traditional single-hole oil injection method by constructing multiple oil injection ports on the bearing cover and setting an exhaust port on the opposite side of the oil injection ports. It uses a manual dry oil station for centralized lubrication, increasing the amount and fluidity of grease injection while simultaneously removing coal sludge and other impurities from the grease, extending the lubrication cycle, reducing lubrication workload, and ensuring reliable lubrication. This prevents coal dust from clogging the oil holes, making subsequent grease injection more difficult and potentially leading to bearing oil shortages or damage. This crusher is used in conjunction with a roadway transfer machine. Pre-set convex and concave interfaces make the connection between the crusher and the transfer machine more convenient, with high connection strength, reducing transition links and unnecessary wear. By setting a pair of self-moving connecting points on both sides of the housing, which work in conjunction with the transfer machine, the crusher can be lifted when it needs to be moved. With the assistance of a pulling device, the crusher and transfer machine can move forward in the roadway, ensuring continuous mining of the working face. The roadway wheel crusher provided in this application has reliable and durable hammers, convenient pad installation and removal, and reliable lubrication, making it highly practical.

[0134] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0135] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0136] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0137] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0138] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A wheel crusher for use in a roadway, characterized in that, include: The overall frame (1) includes an integral bottom trough (10), on which an inlet frame (11), a crushing box (12), an output box (13) and an outlet frame (14) are arranged in sequence. The hammer shaft assembly (3) includes a hammer seat (33) and a hammer head (34) disposed in the crushing box (12). The hammer head (34) is hinged to the hammer seat (33). The hammer seat (33) is rotatably connected to the crushing box (12) through a main shaft (32). The transmission device (2) is installed on the output box (13), and the main shaft (32) extends out of the crushing box (12) and is connected to the output end of the transmission device (2) for transmission. The height adjustment device (4) is set on both sides of the crushing box (12), and the height adjustment device (4) can adjust the distance between the hammer (34) and the integral bottom groove (10); The hammerhead (34) includes: Hammer head base (341), one end of which is hinged to the hammer seat (33) has a through hole, and the hammer head base (341) is hinged to the hammer seat (33) after inserting a hammer head pin into the through hole; Vertical steps (342) are provided on both sides of the working end of the hammerhead base (341), and a square strip of wear-resistant block (343) is provided in the vertical step (342). The upper surface of the wear-resistant block (343) has multiple processing grooves (344), and wear-resistant strips (345) are provided in the processing grooves (344). The hammer base (33) includes: The upper hammer seat (331) and the lower hammer seat (332) are joined together and connected by bolts. The upper hammer seat (331) and the lower hammer seat (332) form a square connecting hole (334) in the middle after being joined together. The main shaft (32) is inserted into the square connecting hole (334) and then connected to the hammer seat (33). Multiple outer hammer discs are spaced apart on the upper hammer seat (331) or the lower hammer seat (332), and the hammer head (34) is hinged between two adjacent outer hammer discs by a hammer head pin. A pin hole (335) is opened on the outer hammer plate perpendicular to the axial direction of the hammer head pin shaft. A positioning pin shaft is inserted into the pin hole (335) to limit the hammer head pin shaft. D-shaped holes (333) are formed on the two outermost outer hammer discs, and D-shaped blocks are embedded in the D-shaped holes (333) to limit the hammer head pin.

2. The wheel crusher for roadway use according to claim 1, characterized in that, The hammer shaft assembly (3) includes: Two second bearing seats (31) are respectively embedded in the two side plates of the crushing box (12); The hammer seat (33) is located between the two second bearing seats (31), and the two ends of the main shaft (32) pass through the second bearing seats (31) and are connected to large pulleys (35) on the outside of the two side plates of the crushing box (12). Multiple hammerheads (34) are symmetrically arranged on the outer circumference of the hammer base (33).

3. The wheel crusher for roadway use according to claim 2, characterized in that, The height adjustment device (4) includes: The bottom plate (42) of the box body, the inlet frame (11), the crushing box (12), the output box (13) and the outlet frame (14) are connected by flanges to form a box body assembly. The bottom plate (42) of the box body is located between the box body assembly and the integral bottom groove (10). The box body assembly, the bottom plate of the box body and the integral bottom groove (10) are detachably connected by mounting bolts (436). A support cylinder (44) is provided in front of the inlet frame (11) and behind the outlet frame (14). The top of the inlet frame (11) and the outlet frame (14) are provided with cylinder mounting seats extending outward. The top of the support cylinder (44) is hinged to the cylinder mounting seat, and the bottom of the support cylinder (44) is hinged to the integral bottom groove (10). The lifting rod (41) has a plurality of pin holes arranged vertically at intervals. The bottom of the lifting rod (41) is connected to the top of the second bearing seat (31). The second bearing seat (31) is vertically slidably mounted on the side plate of the crushing box (12). An adjustment frame (1211) is installed on the top of the side plate of the crushing box (12). Multiple pin holes arranged vertically are spaced apart on both sides of the adjustment frame (1211). The lifting rod (41) can be vertically slidably set in the adjustment frame (1211). The lifting rod (41) is positioned by aligning the pin hole of the lifting rod (41) with the pin hole of the adjustment frame (1211) and inserting the lifting rod pin shaft (1212). A hydraulic jack (45) is installed on the bottom plate (42) of the box on both sides of the crushing box (12), and the top of the hydraulic jack (45) is connected to the bottom of the second bearing seat (31). Multi-layer adjustment pads (43) can be placed between the bottom plate (42) of the box and the overall bottom groove (10).

4. The wheel crusher for roadway use according to claim 3, characterized in that, Each of the aforementioned adjustment pads (43) includes: Multiple pads are provided, with adjacent pads staggered to form a pad break (434), and each pad is provided with multiple connecting holes (435) with open structures spaced apart.

5. The wheel crusher for roadway use according to claim 2, characterized in that, The transmission device (2) includes: A bracket (23) is disposed on the top of the output box (13), and a motor base is slidably disposed on the bracket (23); A motor connecting plate (24) is mounted on the motor base, and a motor is mounted on one side of the motor connecting plate (24); The first bearing housing (26) is installed on the motor base on the other side of the motor connecting plate (24); A flexible coupling (25) is installed on the first bearing housing (26), and the output shaft of the motor is connected to the flexible coupling (25); The small pulley (21) is connected to the output end of the flexible coupling (25); A belt tensioning device (22) is mounted on the bracket (23), and the output end of the belt tensioning device (22) is connected to the motor base; The large pulley (35) and the small pulley (21) are connected by a V-belt (27).

6. The wheel crusher for roadway use according to claim 5, characterized in that, It also includes a lubrication system, said lubrication system (6) comprising: A manual lubrication pump (61) is installed on the side wall of the output box (13). The manual lubrication pump (61) is equipped with an oil level indicator rod (611), a handle (612), a pressure gauge (613), and a distribution switch (614). An oil delivery pipe (62) has its inlet end connected to the outlet end of the manual lubrication pump (61), and the oil delivery pipe (62) includes: The first main pipeline (621) has a first oil inlet (261) and a first vent (262) at both ends of the bearing cover of the first bearing housing (26). The output end of the first main pipeline (621) is connected to the first oil inlet (261). The second main pipeline (622) has two branch pipelines at its output end. The bearing cap of the second bearing seat (31) is provided with a second oil inlet (311) and a second vent (312) at both ends. The output ends of the two branch pipelines are connected to the second oil inlets (311) of the second bearing seats (31) on both sides. The two branch pipelines are provided with a first ball valve (6221) and a second ball valve (6222).

7. The wheel crusher for roadway use according to claim 1, characterized in that, Both the crushing chamber (12) and the output chamber (13) are equipped with a spray device (5) on their tops. The spray device (5) includes: A square water pipe (51) is installed on top of the crushing box (12) or the output box (13); Multiple nozzles (52) are spaced apart on the square water pipe (51); A connector (53) is provided at one end of the square water pipe (51). The connector (53) is connected to the external high-pressure water supply. The other end of the square water pipe (51) is sealed with a plug (54).

8. The wheel crusher for roadway use according to claim 1, characterized in that, The entrance frame (11) and the exit frame (14) are both equipped with protective chains (112) and curtains (111), with the curtains (111) located outside the protective chains (112); The protective chain (112) includes a steel plate set on the top of the entrance frame (11) or the exit frame (14), the steel plate is cut with multiple chain link openings, and a chain is hung on the chain link openings by round steel bars; The curtain (111) is bolted to the inlet end of the crushing box (12) and the outlet end of the output box (13).

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