Crushing device for coal mining

Abstract

The utility model relates to the technical field of crushing devices, in particular to a coal mining crushing device which comprises a bottom plate and a crushing box arranged on the bottom plate, a crushing cavity is formed in the crushing box, a discharging opening is formed in the bottom wall of the crushing cavity, and a first crushing roller and a second crushing roller are arranged in the crushing cavity respectively. A first rotating part is arranged on one side wall of the crushing box, a second rotating part is further arranged on one side wall of the crushing box, a box body is arranged on the outer side wall of the crushing box, a cavity is formed in the box body, a driving assembly is arranged in the cavity, and a moving assembly is arranged on the lower end face of the crushing box. By means of the structure, the second crushing roller is driven by the driving assembly to be close to or away from the first crushing roller, the distance between the first crushing roller and the second crushing roller is adjusted, and when the distance between the first crushing roller and the second crushing roller is different, the second crushing roller is driven to be close to or away from the first crushing roller. And the first crushing roller and the second crushing roller rotate to crush large coal into coal with different particle size ranges so as to adapt to use in different scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to crushing device technical field, concretely relates to a coal mining crushing device. BACKGROUND

[0002] Coal mine refers to the place rich in coal resources, and is generally divided into underground coal mine and open coal mine, and coal occupies the main position in primary energy production and consumption; at present, after the coal is excavated, the large block coal needs to be crushed according to the use scene of the coal, and different use scenes need to use coal of different sizes.

[0003] For example, the coal mine crushing and screening device disclosed in the patent with the announcement number CN221674420U can adjust the size of the sieve hole through the baffle, can screen the size of the coal mine according to actual needs, meets the different screening requirements, and improves the screening efficiency by reciprocating vibration of the screening frame;But when the coal mine crushing and screening device is actually used, the spacing of the first crushing roller and the second crushing roller cannot be adjusted, so that the coal mine crushing and screening device can only crush the large block coal into coal within the same particle size range, cannot crush the large block coal into coal within different particle size ranges according to the use scene, leading to poor practicability, so it needs to be improved. SUMMARY

[0004] The utility model aims at providing a coal mining crushing device to solve the problems in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A coal mining crushing device, comprising a bottom plate and a crushing box arranged on the bottom plate, an upward-opening crushing cavity is formed in the crushing box, a discharge port is formed in the bottom wall of the crushing cavity, a first crushing roller and a second crushing roller are arranged in the crushing cavity, a first rotating member for driving the first crushing roller to rotate is arranged on one side wall of the crushing box, a second rotating member for driving the second crushing roller to rotate is also arranged on the side wall of the crushing box, a box body is arranged on the outer side wall of the crushing box, a cavity is arranged in the box body, a driving assembly for driving the second crushing roller to move is arranged in the cavity, and a moving assembly for dredging the discharge port is arranged on the lower end face of the crushing box.

[0007] Preferably, sliding grooves penetrating through the crushing box are formed in the opposite side walls of the crushing cavity, a protruding rod penetrating through the corresponding sliding groove at one end and extending out of the crushing box is arranged at each end of the second crushing roller, and a slidable driving plate is sleeved on the extending end of the protruding rod.

[0008] The driving assembly comprises two threaded rods arranged oppositely in the cavity and rotatable, one end of each of the two threaded rods extends out of the box body and is screwed into a corresponding driving plate, and synchronous rotation of the two threaded rods is used to drive the second crushing roller to move.

[0009] Preferably, a sprocket is sleeved on each of the threaded rods in the cavity, a chain is sleeved between the two sprockets, one of the two threaded rods is rotated, the other threaded rod is driven to rotate synchronously through the sprocket, and synchronous rotation of the two threaded rods is realized.

[0010] Preferably, a limiting plate for limiting the driving plate is arranged on the outer side wall of the crushing box and located at both sides of the driving plate.

[0011] Preferably, opposite positioning plates are arranged on a side wall of the crushing box.

[0012] The second rotating member comprises a fixed plate arranged between the two positioning plates and slidable, a first motor is arranged on the fixed plate, an output shaft of the first motor is connected with the protruding rod, the first motor is used to drive the protruding rod to rotate, and the second crushing roller is rotated.

[0013] Preferably, a plurality of opposite supports are arranged on the lower end face of the crushing box.

[0014] The moving assembly comprises a sliding plate arranged on the lower end face of the crushing box and having an L-shaped cross section, a push plate extending into the discharge port is arranged at one end of the sliding plate, a plurality of round rods penetrating through the supports are further arranged on the sliding plate, an intercepting ring is sleeved on the round rods, a spring for driving the intercepting ring to move is sleeved on the round rods, the sliding plate is moved to drive the push plate to move, and the push plate pushes the coal in the discharge port.

[0015] Preferably, a handle for driving the sliding plate to move is arranged on a side wall of the sliding plate.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1、The utility model discloses a driving assembly is used for driving the second crushing roller to move close to or away from the first crushing roller, thereby adjusting the interval between the first crushing roller and the second crushing roller, when the interval between the first crushing roller and the second crushing roller is different, the first crushing roller and the second crushing roller can crush the large coal into coal of different particle size ranges, thereby adapting to different scenes, and compared with the prior art, the coal mining crushing device can adjust the interval between the first crushing roller and the second crushing roller through the driving assembly, so that the first crushing roller and the second crushing roller can crush the large coal into coal of different particle size ranges according to the use scene, thereby adapting to different scenes, and the utility model has good practicability in actual use.

[0018] 2. The utility model discloses, when the coal after crushing is discharged through the discharge port, the coal can be blocked at the discharge port, at this time, the coal at the discharge port is driven to push through the moving component, realizes the dredging of the discharge port, makes the blocked discharge port can continue to discharge the coal in the crushing chamber, thereby facilitating actual use. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic diagram of a coal mining crushing device in the utility model.

[0020] Figure 2 It is the sectional structure schematic diagram of the crushing box in the utility model.

[0021] Figure 3 It is the structure schematic diagram of the box body being installed in the crushing box in the utility model.

[0022] Figure 4 It is the explosion structure schematic diagram of the positioning plate and fixed plate in the utility model.

[0023] Figure 5 It is the explosion structure schematic diagram of the driving plate and threaded rod in the utility model.

[0024] Figure 6 It is the structure schematic diagram of the inside of the box body in the utility model.

[0025] The meaning of each reference numeral in the drawing is as follows:

[0026] 100, crushing box; 101, crushing chamber; 110, box body; 120, driving plate; 130, positioning plate; 140, fixed plate; 150, first motor; 160, sliding plate; 161, handle; 170, bottom plate; 171, supporting leg; 180, second motor; 190, third motor;

[0027] 201, discharge port; 210, first crushing roller; 220, second crushing roller; 221, shielding ring; 230, support; 240, push plate; 241, cross plate; 250, round rod; 251, intercepting ring; 260, spring; 270, guide block;

[0028] 301, sliding groove; 310, protruding rod; 320, limiting plate;

[0029] 401, fixed groove; 410, positioning block;

[0030] 500, threaded rod;

[0031] 601, cavity; 610, chain wheel; 620, chain. DETAILED DESCRIPTION

[0032] For further understanding of the content of the utility model, the utility model is described in detail in combination with the drawings and examples. It should be understood that the examples are only for explaining the utility model and not for limiting.

[0033] The following will be described in detail in combination with the drawings and examples. Figures 1-6 The example is further described in detail.

[0034] As Figure 1 shown, the coal mining crushing device in the example includes a bottom plate 170 and a crushing box 100 arranged on the bottom plate 170, an upward-opening crushing cavity 101 is formed in the crushing box 100, a discharge port 201 is formed in the bottom wall of the crushing cavity 101, a first crushing roller 210 and a second crushing roller 220 are respectively arranged in the crushing cavity 101, a first rotating member for driving the first crushing roller 210 to rotate is arranged on one side wall of the crushing box 100, a second rotating member for driving the second crushing roller 220 to rotate is also arranged on one side wall of the crushing box 100, a box body 110 is arranged on the outer side wall of the crushing box 100, a cavity 601 is arranged in the box body 110, a driving assembly for driving the second crushing roller 220 to move is arranged in the cavity 601, and a moving assembly for dredging the discharge port 201 is arranged on the lower end face of the crushing box 100.

[0035] In the example, the large pieces of coal to be crushed are poured into the crushing cavity 101 from the opening of the crushing cavity 101, then the first crushing roller 210 and the second crushing roller 220 are respectively driven to rotate by the first rotating member and the second rotating member, so that the first crushing roller 210 and the second crushing roller 220 crush the large pieces of coal, after the large pieces of coal are crushed, the crushed coal can pass through the first crushing roller 210 and the second crushing roller 220 and fall to the discharge port 201, so that the crushed coal can be discharged out of the crushing cavity 101 through the discharge port 201;

[0036] The box body 110 is fixedly installed on the outer side wall of the crushing box 100, realizes installation of the driving assembly on the crushing box 100, and when large coal is crushed and needs to be formed into coal of different particle size ranges according to use scenes, the driving assembly is used to drive the second crushing roller 220 to approach or move away from the first crushing roller 210, so that the distance between the first crushing roller 210 and the second crushing roller 220 is adjusted, and when the distance between the first crushing roller 210 and the second crushing roller 220 is different, the first crushing roller 210 and the second crushing roller 220 can be rotated to crush large coal into coal of different particle size ranges, so as to adapt to use in different scenes. Compared with the prior art, the coal mining crushing device can adjust the distance between the first crushing roller 210 and the second crushing roller 220 through the driving assembly, so that the first crushing roller 210 and the second crushing roller 220 can crush large coal into coal of different particle size ranges according to use scenes, so as to adapt to use in different scenes, and the practicality is good in actual use.

[0037] When the coal is discharged through the discharge port 201 after being crushed, the coal may be blocked at the discharge port 201, at which time the coal at the discharge port 201 is pushed by the moving assembly to dredge the discharge port 201, so that the blocked discharge port 201 can continue to discharge the coal in the crushing cavity 101, thereby facilitating actual use.

[0038] The opposite guide blocks 270 are fixedly installed in the crushing cavity 101 at the bottom, and the inclined surfaces are formed in the guide blocks 270. When the coal falls between the first crushing roller 210 and the second crushing roller 220, part of the coal falls on the inclined surfaces, and the coal slides to the discharge port 201 through the inclined surfaces, so that part of the coal is prevented from accumulating on the bottom wall of the crushing cavity 101 and cannot be discharged from the crushing cavity 101 through the discharge port 201.

[0039] In actual use, the legs 171 are fixedly installed on the bottom wall of the crushing box 100 at the four corners, the lower end of the leg 171 is fixedly installed on the bottom plate 170, the crushing box 100 is installed on the bottom plate 170, and the discharge port 201 has a certain height, so that the coal can be discharged from the discharge port 201.

[0040] As shown in Figures 1-5 In this embodiment, the crushing cavity 101 is provided with the chute 301 penetrating through the crushing box 100, the two ends of the second crushing roller 220 are provided with the protruding rods 310 penetrating through the corresponding chute 301 and extending out of the crushing box 100, and the driving plates 120 are slidably arranged on the extending ends of the protruding rods 310.

[0041] The driving assembly comprises two threaded rods 500 arranged oppositely in the cavity 601 and rotatable, one end of each of the two threaded rods 500 extends out of the box body 110 and is screwed into the corresponding driving plate 120 arranged in the box body 110, and synchronous rotation of the two threaded rods 500 is used to drive the second crushing roller 220 to move.

[0042] In the embodiment, the two protruding rods 310 are fixedly installed at the two end portions of the second crushing roller 220, the corresponding ends of the protruding rods 310 are rotatably installed on the driving plates 120 through bearings, the threaded rods 500 are rotatably installed on the side walls of the cavity 601 through bearings, the driving plates 120 slide along the outer side walls of the crushing box 100, when the two threaded rods 500 in the cavity 601 rotate synchronously, one end of each of the two threaded rods 500 is screwed into the corresponding driving plate 120, so that rotation of the threaded rods 500 can drive the driving plates 120 to move, and movement of the driving plates 120 can drive the second crushing roller 220 to slide along the sliding groove 301, thereby adjusting the distance between the first crushing roller 210 and the second crushing roller 220.

[0043] The sliding groove 301 is arranged along the movement direction of the second crushing roller 220, and the protruding rods 310 in the crushing cavity 101 are each sleeved with a shielding ring 221, the shielding ring 221 is used to shield the sliding groove 301, so that the coal in the crushing cavity 101 can be prevented from being clamped in the sliding groove 301, thereby affecting the movement of the protruding rods 310 in the sliding groove 301.

[0044] In actual use, the limiting plates 320 for limiting the driving plates 120 are fixedly installed on the outer side walls of the crushing box 100 and located at the two sides of the driving plates 120, the driving plates 120 are limited by the two limiting plates 320, so that the driving plates 120 can better drive the protruding rods 310 to slide along the sliding groove 301.

[0045] As shown in Figures 1-6 In the embodiment, the threaded rods 500 in the cavity 601 are each sleeved with a sprocket 610, the two sprockets 610 are sleeved with a chain 620, one of the two threaded rods 500 rotates, and the other threaded rod 500 is driven to rotate synchronously by the sprocket 610, thereby realizing synchronous rotation of the two threaded rods 500.

[0046] In the embodiment, the chain wheel 610 and the chain 620 are arranged such that, by fixing the chain wheel 610 on the threaded rod 500, the chain 620 is sleeved on the two chain wheels 610, when one of the two threaded rods 500 drives the chain wheel 610 to rotate, the chain wheel 610 can drive the chain wheel 610 on the other threaded rod 500 to rotate through the chain 620, that is, the other threaded rod 500 rotates, and synchronous rotation of the two threaded rods 500 is realized.

[0047] In actual use, the second motor 180 is fixedly installed on the outer side wall of the box body 110, the output shaft of the second motor 180 is connected with one of the two threaded rods 500, and the second motor 180 can drive the two threaded rods 500 to rotate synchronously.

[0048] As shown in Figures 1-4 In the embodiment, the side wall of the crushing box 100 is provided with opposite positioning plates 130.

[0049] The second rotating member includes a fixed plate 140 arranged between the two positioning plates 130 and being slidable, the fixed plate 140 is provided with a first motor 150, the output shaft of the first motor 150 is connected with the convex rod 310, the first motor 150 is used for driving the convex rod 310 to rotate, and the second crushing roller 220 is realized to rotate.

[0050] In the embodiment, the positioning plates 130, the fixed plate 140 and the first motor 150 are arranged such that, by fixing the positioning plates 130 on the side wall of the crushing box 100 and fixing the first motor 150 on the fixed plate 140, the output shaft of the first motor 150 is fixedly connected with the convex rod 310, when the first motor 150 drives the convex rod 310 to rotate through the output shaft, the convex rod 310 can drive the second crushing roller 220 to rotate;

[0051] The positioning plate 130 is provided with a positioning block 410, the opposite side walls of the fixed plate 140 are provided with a fixed groove 401 for clamping the positioning block 410, the fixed groove 401 is arranged along the direction of the sliding groove 301, the fixed groove 401 and the positioning block 410 are matched to realize the sliding installation of the fixed plate 140 between the two positioning plates 130, when the convex rod 310 drives the second crushing roller 220 to move, the fixed plate 140 and the first motor 150 also move with the convex rod 310, and the first motor 150 can also drive the second crushing roller 220 to rotate through the convex rod 310;

[0052] In actual use, the first crushing roller 210 is fixedly installed with a convex shaft at both ends, the convex shaft is rotatably installed on the side wall of the crushing cavity 101 through a bearing, the first crushing roller 210 is rotatably installed in the crushing cavity 101, the first rotating part includes a third motor 190 fixedly installed on the crushing box 100, the output shaft of the third motor 190 is fixedly connected with the convex shaft, the first crushing roller 210 can be driven to rotate through the third motor 190, the first motor 150 and the third motor 190 synchronously drive the first crushing roller 210 and the second crushing roller 220 to rotate, and the first crushing roller 210 and the second crushing roller 220 crush the large block of coal.

[0053] As shown in Figures 1-2 In the embodiment, the lower end surface of the crushing box 100 is provided with a plurality of opposite supports 230.

[0054] The moving assembly includes a slide plate 160 provided on the lower end surface of the crushing box 100 and having an L-shaped cross section, the one end of the slide plate 160 is provided with a push plate 240 extending into the discharge port 201, the slide plate 160 is further provided with a plurality of circular rods 250 penetrating the supports 230, the circular rod 250 is sleeved with an intercepting ring 251, the circular rod 250 is sleeved with a spring 260 for driving the intercepting ring 251 to move, the slide plate 160 moves to drive the push plate 240 to move, and the push plate 240 pushes the coal in the discharge port 201.

[0055] In the embodiment, the push plate 240 is fixedly installed on the slide plate 160, one end of the circular rod 250 is fixedly installed on the push plate 240, the other end of the circular rod 250 is fixedly installed on the slide plate 160, the circular rod 250 is installed on the slide plate 160, the supports 230 are fixedly installed on the lower end surface of the crushing box 100, when the plurality of supports 230 are sleeved on the corresponding circular rods 250, the slide plate 160 and the push plate 240 are installed on the lower end surface of the crushing box 100, the slide plate 160 drives the push plate 240 to move at the discharge port 201, and the push plate 240 pushes the blocked coal at the discharge port 201, that is, the coal at the discharge port 201 is dredged;

[0056] The intercepting ring 251 is fixedly installed on the round rod 250, one end of the spring 260 abuts against the intercepting ring 251 when the spring 260 is sleeved on the round rod 250, and the other end of the spring 260 abuts against the support 230, so that the push plate 240 is moved to one side of the discharge port 201 under the action of the spring 260, so as to prevent the push plate 240 from interfering with the discharge of the discharge port 201, so that in actual use, only the sliding plate 160 needs to be continuously pushed to drive the push plate 240 to move, and the discharge port 201 can be dredged, and manual pulling of the sliding plate 160 is not needed, so that the actual use is facilitated.

[0057] In order to facilitate the movement of the sliding plate 160, a handle 161 for driving the sliding plate 160 to move is fixedly installed on one side wall of the sliding plate 160, and the handle 161 facilitates the movement of the sliding plate 160.

[0058] In actual use, the upper end surface of the push plate 240 is fixedly installed with a horizontal plate 241 extending into the crushing cavity 101, one end of the horizontal plate 241 is inserted into the corresponding guide block 270, when the push plate 240 drives the horizontal plate 241 to move, one end of the horizontal plate 241 is always located in the guide block 270, so that when the push plate 240 moves, part of the coal falls on the sliding plate 160, thereby affecting the use of the sliding plate 160.

[0059] In actual use, first, the second motor 180 drives the two threaded rods 500 to rotate synchronously, so that the threaded rods 500 can adjust the distance between the first crushing roller 210 and the second crushing roller 220 through the driving plate 120, and the second crushing roller 220 is adjusted to a suitable position, then the large piece of coal to be crushed is poured into the crushing cavity 101, at this time, the first crushing roller 210 and the second crushing roller 220 are driven to rotate by the first motor 150 and the third motor 190, so that the large piece of coal can be crushed, and the crushed large piece of coal is discharged from the crushing cavity 101 through the discharge port 201.

[0060] In summary, the above only describes the preferred embodiments of the present application, and any changes and modifications made within the scope of the present application should be included in the scope of the present application.

Claims

1. A coal mining breaking device, comprising a bottom plate (170) and a breaking box (100) arranged on the bottom plate (170), wherein an upwardly open breaking cavity (101) is arranged in the breaking box (100), and a discharge port (201) is arranged on a bottom wall of the breaking cavity (101), characterized in that: The first crushing roller (210) and the second crushing roller (220) are arranged in the crushing cavity (101) respectively, a first rotating member for driving the first crushing roller (210) to rotate is arranged on one side wall of the crushing box (100), a second rotating member for driving the second crushing roller (220) to rotate is further arranged on the side wall of the crushing box (100), a box body (110) is arranged on the outer side wall of the crushing box (100), a cavity (601) is arranged in the box body (110), a driving assembly for driving the second crushing roller (220) to move is arranged in the cavity (601), and a moving assembly for dredging the discharge port (201) is arranged on the lower end face of the crushing box (100).

2. The coal mining breaking device according to claim 1, characterized in that: The opposite side walls of the crushing cavity (101) are provided with sliding grooves (301) penetrating the crushing box (100), the two ends of the second crushing roller (220) are provided with protruding rods (310) penetrating the corresponding sliding grooves (301) and protruding out of the crushing box (100), and the protruding ends of the protruding rods (310) are sleeved with slidable driving plates (120); The driving assembly comprises two threaded rods (500) arranged oppositely in the cavity (601) and rotatable, one end of each of the two threaded rods (500) protrudes out of the box body (110) and is screwed into the corresponding driving plate (120), and synchronous rotation of the two threaded rods (500) drives the second crushing roller (220) to move.

3. The coal mining breaking device according to claim 2, characterized in that: The threaded rods (500) in the cavity (601) are sleeved with sprockets (610), the two sprockets (610) are sleeved with a chain (620), one of the two threaded rods (500) is rotated to drive the other threaded rod (500) to rotate synchronously through the sprocket (610), and synchronous rotation of the two threaded rods (500) is realized.

4. The coal mining breaking device according to claim 2, characterized in that: The outer side wall of the crushing box (100) and located on both sides of the driving plate (120) are provided with limiting plates (320) for limiting the driving plate (120).

5. The coal mining breaking device according to claim 2, characterized in that: The side wall of the crushing box (100) is provided with opposite positioning plates (130); The second rotating member comprises a fixed plate (140) arranged between the two positioning plates (130) and slidable, the fixed plate (140) is provided with a first motor (150), the output shaft of the first motor (150) is connected with the protruding rod (310), the first motor (150) is used for driving the protruding rod (310) to rotate, and the second crushing roller (220) is rotated.

6. The coal mining breaking device according to claim 1, characterized in that: The lower end face of the crushing box (100) is provided with a plurality of opposite supports (230). The mobile assembly comprises a slide plate (160) provided on the lower end surface of the crushing box (100) and in L-shaped cross section, one end of the slide plate (160) is provided with a push plate (240) extending into the discharge port (201), a plurality of round rods (250) penetrating through the support (230) are further provided on the slide plate (160), the round rod (250) is sleeved with an intercepting ring (251), the round rod (250) is sleeved with a spring (260) for driving the intercepting ring (251) to move, the slide plate (160) is moved for driving the push plate (240) to move, and the push plate (240) pushes the coal in the discharge port (201).

7. The coal mining breaking device according to claim 6, characterized in that: A handle (161) for driving the slide plate (160) to move is arranged on one side wall of the slide plate (160).

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