An environmentally friendly coal mine conveying equipment

Abstract

The present invention relates to an environmentally friendly coal mine conveying equipment, including a head conveying section, a tail conveying section and a plurality of intermediate conveying sections, wherein the intermediate conveying section includes a support frame, a roller group and a dust treatment device, and the dust treatment device includes a baffle assembly and a spray assembly, wherein the length direction of the support frame is defined as the left-right direction, the baffle assembly includes at least one pair of baffles arranged in a front-to-back direction, and the pair of baffles are arranged in an eight-shaped shape, and the spray assembly includes a water supply branch pipe and a spray nozzle connected to the upper end of the water supply branch pipe, the water supply branch pipe is arranged on the baffle, and the upper end of the water supply branch pipe extends obliquely upward from the baffle, so that the spray nozzle is located in the open space. The baffles on both sides are used to block but not close, and the spray nozzle can be used to spray above the conveyed material to perform dust reduction treatment, and the baffle and the spray can well solve the dust pollution problem.

Description

Technical Field

[0001] The invention relates to the technical field of material transportation, and in particular to an environmentally friendly coal mine transportation equipment. Background Art

[0002] Coal mines refer to places rich in coal resources, which are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, it is generally chosen to dig tunnels underground to mine coal. This is an underground coal mine. When the coal seam is very close to the surface, it is generally chosen to directly strip the surface soil layer to mine coal. This is an open-pit coal mine. Especially for open-pit mining, there is open-pit transportation, which generally uses belt conveyors. During the transportation process, it is inevitable that a lot of dust will be generated, which has a bad impact on the environment and worsens the working environment of workers. The utility model patent with authorization announcement number CN212175316U discloses a fully sealed belt conveyor, which uses the cooperation of a support plate and a cover plate to form a fully enclosed space to prevent the material from being scattered and dust from being raised during transportation. However, this type of belt conveyor structure is not very suitable for solving coal mine transportation problems, which can be described from two aspects: (1) There are only horizontally arranged belt support rollers at the bottom to support the belt body, and the belt edge is supported by the support plate, which is suitable for conveying materials that are not too heavy; (2) The cover plate is fully enclosed, which only temporarily prevents dust, and dust still exists; the fully enclosed space is not conducive to observing the conveying situation, nor is it convenient for subsequent equipment maintenance. Summary of the invention

[0003] The purpose of the present invention is to provide an environmentally friendly coal mine conveying equipment to solve the problem of dust pollution during coal conveying.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] An environmentally friendly coal mine conveying equipment includes a head conveying section, a tail conveying section and several intermediate conveying sections. The head conveying section is provided with a motor and an active belt roller, the tail conveying section is provided with a driven belt roller, and the intermediate conveying section includes a supporting frame, a roller group, an unloaded roller and a dust treatment device.

[0006] The roller group includes a connecting frame and a plurality of upper rollers. The connecting frame is arranged on the supporting frame. The roller group is arranged at intervals along the length direction of the supporting frame. The unloaded roller is located at the lower position of the supporting frame and is used to support the unloaded belt on the return journey. Both the upper roller and the unloaded roller are unpowered rollers.

[0007] The dust handling device includes a baffle assembly and a spray assembly, wherein the length direction of the support frame is defined as the left-right direction, and the baffle assembly includes at least one pair of baffles arranged opposite to each other in the front-back direction, the pair of baffles are arranged in an eight-shaped shape, and the baffles are located on the upper side of the support frame and form an open space directly above the support frame;

[0008] The spray assembly includes a water supply branch pipe and a spray nozzle connected to the upper end of the water supply branch pipe. The water supply branch pipe is arranged on the baffle plate, and the upper end of the water supply branch pipe extends obliquely upward from the baffle plate so that the spray nozzle is located in the open space.

[0009] Furthermore, the water supply branch pipe is located on the outside of the baffle, and the water supply branch pipe is arranged obliquely upward. A water supply intermediate pipe is also provided on the outside of the baffle. The water supply intermediate pipe is located at the bottom of the baffle and extends along the left and right directions. The length of the water supply intermediate pipe is smaller than the length of the baffle, and both ends of the water supply intermediate pipe are raised relative to the baffle. The raised ends of the water supply intermediate pipe form connecting ends, and the connecting ends of the two connected water supply intermediate pipes are connected by a hose joint.

[0010] Furthermore, the support frame includes a cross beam extending in the left-right direction, and a plurality of longitudinal beams are arranged between the front and rear cross beams. The roller group is a module, and the bottom of the connecting frame is supported on the corresponding cross beam. The connecting frame includes a U-shaped frame, and the two ends of the U-shaped frame are inclined and bent inward to form a hanging arm. The hanging arm is provided with a bolt hole for the bolts fixing the baffle to pass through, and the baffle is attached to the outside of the hanging arm.

[0011] Furthermore, the roller group includes four upper rollers, two of which are side rollers and two are bottom rollers. The two side rollers and the two bottom rollers are symmetrical front to back about the central cross-section of the U-shaped frame. The side rollers are tilted, and the upper ends of the side rollers are hinged on the hanging arms. The two bottom rollers are tilted to form a V-shaped arrangement, and the inclination angle of the bottom rollers is smaller than the inclination angle of the side rollers.

[0012] Furthermore, a first support column and two second support columns are provided in the U-shaped frame. The two second support columns are symmetrically arranged front and back about the first support column. The height of the two second support columns is greater than the height of the first support column. The two ends of the bottom roller are respectively fixed to the first support column and the second support column, and the lower end of the side roller is floatingly assembled on the second support column.

[0013] Furthermore, the second support column is an angle steel, and one of the two side plates of the second support column is used for connection with the bottom roller, and the other side plate is provided with an arc hole, the lower end of the side roller is a floating part, and a connecting pin is provided on the floating part, and the connecting pin is located in the arc hole. When the side roller swings within a certain range, the connecting pin moves in the arc hole, and the bottom side of the floating part is supported by a floating mechanism, and the floating mechanism includes a fixed column, a reset spring, and a floating cap. The fixed column is a step column, and the reset spring is sleeved on the thin section of the fixed column. The other end of the reset spring is fixed to the inner side of the floating cap, and a blind hole is provided in the center of the floating cap, and the floating cap is sleeved on the thin section of the fixed column.

[0014] Furthermore, a concentric annular groove is provided at the lower end of the floating cap on the periphery of the blind hole for the upper end of the return spring to be installed therein.

[0015] Furthermore, connecting plates are provided at both ends of the left and right ends of the support frame for connecting two adjacent support frames. The connecting plates are arranged up and down, and are located on the outside of the crossbeam. Two connecting holes are provided on the connecting plates, and the two connecting holes are arranged at intervals up and down. The connecting holes include horizontal side entry holes and downwardly extending clamping holes. The clamping holes are long holes. During installation, the docking bolts used for connecting the two support frames are first inserted through the side entry holes and then fall downward into the clamping holes.

[0016] Furthermore, a limit hole is provided on the connecting plate below the connecting hole. When two adjacent support frames are butt-jointed in an end-to-end manner, a limit hanger is provided on the butt-jointing bolt. A through hole is provided on the upper portion of the limit hanger for the butt-jointing bolt to pass through. A limit protrusion is provided on the lower portion of the limit hanger. The limit hanger is a thin plate member. The limit protrusion protrudes along the thickness direction of the limit hanger, and the limit protrusion is inserted into the limit hole.

[0017] Furthermore, when the end faces of two adjacent support frames are connected at a certain angle, the two connecting holes located below are connected through an adjustable connecting assembly. The adjustable connecting assembly includes a screw, an abutment plate, and a nut. The screw is installed in the connecting holes of two adjacent connecting plates. The middle part of the screw is a square section and the two sides are threaded sections. The threaded sections on both sides are respectively inserted into the connecting holes of one of the connecting plates. The upper part of the abutment plate is hinged on the square section, and the lower part of the abutment plate is provided with a bevel, and the bevel is provided with a plurality of bayonet holes. During installation, one of the bayonet holes is selected to clamp the hole wall of the limiting hole.

[0018] Beneficial effects of the present invention:

[0019] The coal mine conveying equipment of the present invention adopts a baffle assembly arranged on a supporting frame. The relatively arranged baffles of the baffle assembly are respectively located on both sides of the supporting frame, arranged in an eight-shaped shape, and the upper part is open and not closed. Therefore, while the baffle plays a certain role in shielding dust, it does not affect the observation of the conveyed coal material, and is also convenient for later equipment maintenance. Through the spray assembly arranged at intervals in the longitudinal direction of the conveying equipment, the spray nozzle can be used to spray above the conveyed material to carry out dust reduction treatment. The baffle and the spray can solve the dust pollution problem well. With the existence of baffles on both sides, even in windy weather, the baffles can block the external wind force to a certain extent. On the one hand, dust will not fly around, and block materials will not easily fly out (can be blocked by the baffle); on the other hand, the influence of wind on the spray is reduced. The water mist sprayed by the spray nozzle can act well in the open space between the baffles on both sides and above the conveyed coal material.

[0020] The water pipes and baffles are prefabricated together in a modular design, which is easy to install and maintain.

[0021] The floating side rollers, combined with the four-roller roller group, can better ensure the stable operation of the conveying equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural view of the middle conveying section of the coal mine conveying equipment of the present invention;

[0023] Figure 2 This is a view of the intermediate conveying section of the coal mine conveying equipment of the present invention after removing some baffles;

[0024] Figure 3 It is a three-dimensional structural diagram of the baffle;

[0025] Figure 4 It is a three-dimensional structural diagram of the roller group;

[0026] Figure 5 This is a partial structural diagram of the roller group;

[0027] Figure 6 yes Figure 5 An exploded view of the structure shown;

[0028] Figure 7 It is a three-dimensional structural diagram of the floating cap;

[0029] Figure 8 It is a three-dimensional structural diagram of the connecting plate;

[0030] Fig. 9 It is a schematic diagram of two intermediate conveying sections after being butted end to end;

[0031] Fig.10 yes Fig. 9 Partial view at A in the middle;

[0032] Fig.11 yes Fig.10 A partial view after the butt bolts are removed;

[0033] Fig.12 It is the structural view of the limit pendant;

[0034] Fig.13 It is a schematic diagram of two intermediate conveying sections butted at a certain angle;

[0035] Fig.14 yes Fig.13 Partial diagram of the connection status of the middle docking point;

[0036] Fig.15 yes Fig.14 Structural diagram of the adjustable connection assembly used in .

[0037] The names corresponding to the marks in the figure are:

[0038] 1. Support frame; 11. Crossbeam; 12. Longitudinal beam; 13. Connecting plate; 131. Connecting hole; 132. Limiting hole; 14. Docking bolt; 15. Limiting pendant; 151. Perforation; 152. Limiting convex;

[0039] 2. No-load roller;

[0040] 3. roller group; 31. connecting frame; 311. hanging arm; 32. side roller; 321. connecting pin; 33. bottom roller; 34. first supporting column; 35. second supporting column; 351. arc hole; 36. fixing column; 37. return spring; 38. floating cap; 381. blind hole; 382. concentric ring groove;

[0041] 4. baffle; 41. bolt through hole; 42. handle;

[0042] 51. water supply branch pipe; 52. spray nozzle; 53. water supply intermediate pipe; 531. connection end;

[0043] 6. Adjustable connecting assembly; 61. Screw rod; 62. Abutment plate; 621. Bayonet. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0045] Example:

[0046] An environmentally friendly coal mine conveying equipment includes a head conveying section, a tail conveying section and several intermediate conveying sections. The head conveying section is provided with a motor and an active belt roller, the tail conveying section is provided with a driven belt roller, and the intermediate conveying section includes a support frame, a roller group, an unloaded roller and a dust treatment device. The basic principle of the head conveying section and the tail conveying section is the existing technology and will not be described in detail. The present invention mainly improves the structure of the intermediate conveying section. The head conveying section has a motor, a reducer, and an active belt roller on the frame. The motor and the reducer are used to drive the active belt roller; the frame of the tail conveying section is provided with a driven belt roller and a tensioning structure, and the intermediate conveying section is a plurality of unpowered conveying rollers arranged on the frame. The connecting plates at both ends of the intermediate conveying section are applicable to the head conveying section and the tail conveying section, that is, they are needed when the intermediate conveying sections close to the head and the tail are connected thereto. The intermediate conveying sections are connected in series according to the required length.

[0047] like Figure 1-Figure 2As shown, the roller group 3 includes a connecting frame 31 and a plurality of upper rollers. The connecting frame 31 is arranged on the support frame 1. The roller group 3 is arranged at intervals along the length direction of the support frame 1. The unloaded rollers 2 are located at the lower position of the support frame 1 and are used to support the unloaded belt on the return journey. The number of unloaded rollers 2 is less than that of the upper roller group 3, and the unloaded belt below does not need to be supported so densely. The upper rollers and the unloaded rollers 2 are both unpowered rollers. The roller principle belongs to the prior art, and basically includes a roller shaft and an outer roller. The fixing method of a part of the roller shaft is changed in the present invention.

[0048] like Figure 3 As shown, the dust handling device includes a baffle 4 assembly and a spray assembly, and the length direction of the support frame 1 is defined as the left-right direction. The baffle 4 assembly includes at least one pair of baffles 4 arranged opposite to each other in the front-back direction. In this embodiment, two pairs of baffles 4 are arranged on one support frame 1. The pair of baffles 4 are arranged in an eight-shaped shape, and the baffles 4 are located on the upper side of the support frame 1 and form an open space directly above the support frame 1, that is, the baffles 4 are arranged at a certain angle, and the upper parts do not touch each other, and no closed space is formed.

[0049] The spray assembly includes a water supply branch pipe 51 and a spray nozzle 52 connected to the upper end of the water supply branch pipe 51. The water supply branch pipe 51 is arranged on the baffle 4, and the upper end of the water supply branch pipe 51 extends obliquely upward from the baffle 4, so that the spray nozzle 52 is located in the open space. The water supply branch pipe 51 is located on the outside of the baffle 4, and the water supply branch pipe 51 is arranged obliquely upward close to the baffle 4. The spray nozzle 52 can emit a fan-shaped spray area. When two opposite spray nozzles 52 are used together, the cross-sectional area in the open space is basically covered. The obliquely arranged baffles 4 are located on both sides of the conveyor belt, which can play a role in blocking the dust generated during a certain conveying process. The dust naturally goes to the open space between the two baffles 4. As the conveyor belt continues to move, the dust can be dropped under the spraying action of the above-mentioned interval-arranged spray nozzles 52, so as to prevent the dust from floating and polluting the environment. At the same time, since the baffle 4 does not form a closed space, the conveying process is visualized, which does not affect the viewing of the conveying situation.

[0050] The outer side of the baffle 4 is also provided with a water supply intermediate pipe 53, which is located at the bottom of the baffle 4 and extends in the left-right direction. The length of the water supply intermediate pipe 53 is less than the length of the baffle 4, and the two ends of the water supply intermediate pipe 53 are tilted relative to the baffle 4, and the tilted ends of the water supply intermediate pipe 53 form a connecting end 531, and the connecting ends 531 of the two connected water supply intermediate pipes 53 are connected by a hose connector. In this way, the baffle 4 and the water pipe part can form a module, and the modular design and installation. During installation, there is no need to distinguish the baffles 4 used on the front and back sides, which are all universal, and the water supply intermediate pipes 53 between adjacent baffles 4 in the left and right directions can be connected to the water supply intermediate pipes 53 using a hose connector after the baffle 4 is installed. In order to reduce the weight of the baffle 4 and reduce the cost, the baffle 4 is not suitable to be thicker, but considering the support strength problem, in this embodiment, the horizontal and vertical distribution of the water pipes on the baffle 4 is equivalent to providing a skeleton.

[0051] If the baffle 4 is made of metal, the water pipe can be a metal water pipe and fixed by welding. If the baffle 4 is made of a plastic plate such as acrylic, the water pipe can also be a plastic pipe. As for the hose connector, there are both metal hoses and plastic hoses. The two ends of the hose connector can be respectively threadedly connected to the connecting end 531 of the water supply intermediate pipe 53, which is convenient for installation. If the water supply intermediate pipe 53 is directly docked, it is not easy to dock considering the problem of on-site installation accuracy.

[0052] The water supply intermediate pipe 53 on the front and rear sides can be selected to supply water simultaneously or not simultaneously. For example, a solenoid valve is set on the water pipe near one end (that is, the front and rear sides, forming two water supply pipelines) for control. When the amount of dust is small, one of the water pipes can be closed, or timed control can be performed. After the water supply pipelines on both sides supply water for a certain period of time, one of them can be closed, and it can be automatically opened again after being closed for a set period of time. Through control, environmental protection is solved while saving water.

[0053] An arc-shaped handle 42 is also provided on the outer side of the baffle 4 to facilitate operation during installation, but it is of course not necessary to provide it.

[0054] like Figure 1-Figure 2 As shown, the support frame 1 includes a crossbeam 11 extending in the left-right direction, and a plurality of longitudinal beams 12 are arranged between the front and rear crossbeams 11. The roller group 3 is a module, which can be assembled in advance and installed on site. The bottom of the connecting frame 31 is supported on the corresponding crossbeam 11. The crossbeam 11 and the longitudinal beam 12 are both made of channel steel, which is a ready-made profile and has high structural strength. The longitudinal beam 12 is also a connecting beam in the front-to-back direction. The roller group 3 is supported by the longitudinal beam 12, which has better stability.

[0055] like Figure 4-Figure 5As shown, the connecting frame 31 includes a U-shaped frame, and the two ends of the U-shaped frame are inclined and bent inward to form a hanging arm 311. The roller group 3 includes four upper rollers, two of which are side rollers 32 and two are bottom rollers 33. The two side rollers 32 and the two bottom rollers 33 are symmetrical about the central cross-section of the U-shaped frame. The side rollers 32 are inclined, and the upper ends of the side rollers 32 are hinged on the hanging arm 311. The two bottom rollers 33 are inclined to form a V-shaped arrangement, and the inclination angle of the bottom rollers 33 is smaller than the inclination angle of the side rollers 32. Each roller group 3 has four rollers, which better supports the loaded belt, and the bottom is in a closed state (caused by the bottom rollers 33 having a certain angle), so that the conveying of materials is more stable.

[0056] like Figure 4 As shown, a first support column 34 and two second support columns 35 are provided in the U-shaped frame. The two second support columns 35 are symmetrically arranged front and back about the first support column 34. The height of the two second support columns 35 is greater than the height of the first support column 34. The two ends of the bottom roller 33 are respectively fixed to the first support column 34 and the second support column 35. The end fixation of the roller refers to the roller shaft part, which does not affect the rotation of the outer roller.

[0057] like Figure 3 and 4 As shown, the hanging arm 311 is provided with a bolt hole 312 for the bolts for fixing the baffle 4 to pass through, and the baffle 4 is attached to the outside of the hanging arm 311 and then fixed with bolts, and the baffle 4 is provided with a bolt through hole 41. The hanging arm 311 is hinged to the side roller 32 on one hand, and connected to the baffle 4 on the other hand. The hanging arm 311 is tilted at a certain angle, which is in line with the tilted setting of the side roller 32 and the tilted setting of the baffle 4, and the design is ingenious and the structure is compact.

[0058] like Figure 5-Figure 6 As shown, the lower end of the side roller 32 is floatingly assembled on the second support column 35. The second support column 35 is an angle steel. One of the two side plates of the second support column 35 is used for the connection of the bottom roller 33, and the other side plate is provided with an arc hole 351. The lower end of the side roller 32 is a floating part, and the floating part is provided with a connecting pin 321. The length direction of the connecting pin 321 is set along the left and right direction. The connecting pin 321 is located in the arc hole 351. When the side roller 32 swings within a certain range, the connecting pin 321 moves in the arc hole 351. The side roller 32 is designed to have a small swing amplitude in the up and down direction. When the heavy objects in the conveyor belt become heavier, the side roller 32 can float down a little, which is more conducive to the edge of the conveyor belt to fold up, the conveyor belt is not easy to deviate, and the coal material is relatively not easy to spill.

[0059] like Figure 5-Figure 7As shown, the bottom side of the floating part is supported by a floating mechanism, and the floating mechanism includes a fixed column 36, a reset spring 37, and a floating cap 38. The fixed column 36 is a step column, and the reset spring 37 is sleeved on the thin section of the fixed column 36. The bottom of the reset spring 37 is limited, and the other end of the reset spring 37 is fixed to the inner side of the floating cap 38. A blind hole 381 is provided in the center of the floating cap 38, so that the floating cap 38 is sleeved on the thin section of the fixed column 36.

[0060] A concentric annular groove 382 is provided at the lower end of the floating cap 38 on the periphery of the blind hole 381 for the upper end of the return spring 37 to be inserted into. The upper position of the return spring 37 is more stable and can be connected by welding.

[0061] like Figure 2 , Figure 8 and 9 As shown, both ends of the support frame 1 are provided with connecting plates 13 for connecting two adjacent support frames 1. The connecting plates 13 are arranged vertically (or vertically) and are located outside the crossbeam 11. In this embodiment, the connecting plates 13 are angle steels.

[0062] like Figures 8 to 11 As shown, two connection holes 131 are provided on the connection plate 13. The two connection holes 131 are spaced apart from each other. The connection holes 131 include a horizontal side entry hole and a downwardly extending clamping hole. The clamping hole is a long hole. The docking bolts 14 used for docking the two support frames 1 are first inserted from the side entry hole during installation and then fall downward into the clamping hole. When two adjacent support frames 1 are docked in an end-to-end manner, that is, the adjacent support frames 1 are basically in the same installation plane, that is, they are connected together for the purpose of lengthening. The two adjacent connection plates 13, that is, the side plates of the angle steel, can basically fit each other, and then are connected using docking bolts 14 (a name defined for distinction).

[0063] Furthermore, if Figures 11 to 12 As shown, a limiting hole 132 is provided below the connecting hole 131 on the connecting plate 13. When two adjacent supporting frames 1 are butted end to end, a limiting hanger 15 can be installed on the butting bolt 14. A through hole 151 is provided on the upper part of the limiting hanger 15 for the butting bolt 14 to pass through. The limiting hanger 15 is a thin plate. At this time, the upper part of the limiting hanger 15 is similar to a gasket, and the lower part of the limiting hanger 15 is provided with a limiting protrusion 152. The limiting protrusion 152 is protruded along the thickness direction of the limiting hanger 15. The limiting protrusion 152 is inserted into the limiting hole 132. In order to facilitate on-site insertion, the limiting hole 132 is not a standard round hole, but a long hole or an elliptical hole with a certain length. Even if it is a long hole, it is not as long as the length of the connecting hole 131 and does not need to be longer. The setting of the limiting hanger 15 can improve the stability of the connection of the supporting frame 1, so that the butting bolt 14 is not easy to fall out upward due to loosening.

[0064] There is another possible use, but it is not necessary. It can be selected according to the needs. The support frame 1 is the same, but the connecting parts are slightly different. For example, when the end faces of two adjacent support frames 1 are connected at a certain angle, that is, the conveyor belt has an inclined angle, the two connecting holes 131 located at the bottom are connected by the adjustable connecting component 6, such as Fig.13 As shown. Because the connection holes 131 above the connection plate 13 are close in distance, ordinary bolts can be used for connection, and ordinary round washers can be used. Because the connection holes 131 below the two connection plates 13 are spaced a certain distance from the lower part of the adjacent support frame 1, a connecting piece is designed specifically.

[0065] like Fig.14 and 15 As shown, the adjustable connection assembly 6 includes a screw 61, an abutment plate 62, and a nut. The screw 61 is installed in the connection holes 131 on the two adjacent connection plates 13. The middle part of the screw 61 is a square section and the two sides are threaded sections. The threaded sections on both sides are respectively inserted into the connection holes 131 of one of the connection plates 13. The upper part of the abutment plate 62 is hinged on the square section. The lower part of the abutment plate 62 is provided with a bevel, and the bevel is provided with a plurality of bayonet 621. When installing, one of the bayonet 621 is selected to clamp the hole wall of the limiting hole 132. After installation, the abutment plate 62 and the threaded section on the corresponding side form a triangular structure, which can provide stable support. According to the distance between the adjacent support frames 1, the matching bayonet 621 of the abutment plate 62 is selected. Since the connection hole 131 is a long hole, the screw 61 can be moved during installation. Before tightening the locking nut, the abutment plate 62 is abutted in place.

[0066] For this docking method in the upper section, there may be some interference between the adjacent baffles 4 on the two support frames 1. Since the baffles 4 are thin plates, the two baffles 4 can be installed even if they are slightly offset from front to back in actual installation. The baffles can also be made into an isosceles trapezoid close to a rectangle, that is, the left and right sides are beveled sides to avoid the interference problem. If there is no inclined docking of adjacent support frames in actual application, the design of the baffles cannot be considered, and rectangular baffles are still used.

[0067] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. An environmentally friendly coal mine conveying equipment, comprising a head conveying section, a tail conveying section and a plurality of intermediate conveying sections, the head conveying section is provided with a motor and an active belt roller, the tail conveying section is provided with a driven belt roller, and is characterized in that: The intermediate conveying section includes a support frame, roller group, unloaded rollers and dust treatment device. The roller group includes a connecting frame and a plurality of upper rollers. The connecting frame is arranged on the supporting frame. The roller group is arranged at intervals along the length direction of the supporting frame. The unloaded rollers are located at the lower position of the supporting frame and are used to support the unloaded belt on the return journey. The upper rollers and the unloaded rollers are both unpowered rollers. The roller group includes four upper rollers, two of which are side rollers and two are bottom rollers. The side rollers are arranged obliquely, and the two bottom rollers are arranged obliquely to form a V-shaped arrangement. The inclination angle of the bottom rollers is smaller than the inclination angle of the side rollers. The dust handling device includes a baffle assembly and a spray assembly, wherein the length direction of the support frame is defined as the left-right direction, and the baffle assembly includes at least one pair of baffles arranged opposite to each other in the front-back direction, the pair of baffles are arranged in an eight-shaped shape, and the baffles are located on the upper side of the support frame and form an open space directly above the support frame; The left and right ends of the support frame are provided with connecting plates for two adjacent support frames to connect. The connecting plates are arranged up and down, and the connecting plates are located on the outside of the crossbeam. Two connecting holes are arranged on the connecting plate at intervals up and down. The connecting holes include horizontal side entry holes and downwardly extending clamping holes. The clamping holes are long holes. The docking bolts for the two support frames to connect are first inserted from the side entry holes during installation and then fall downward into the clamping holes. A limiting hole is provided on the connecting plate below the connecting hole. When the end faces of the two adjacent support frames are connected at a certain angle, the two connecting holes located below are connected by an adjustable connecting assembly. The adjustable connecting assembly includes a screw, an abutment plate, and a nut. The screw is installed in the connecting holes of the two adjacent connecting plates. The middle part of the screw is a square section and the two sides are threaded sections. The threaded sections on both sides are respectively inserted into the connecting holes of one of the connecting plates. The upper part of the abutment plate is hinged on the square section. The lower part of the abutment plate is provided with a bevel, and a plurality of bayonet holes are provided on the bevel. When installing, one of the bayonet holes is selected to clamp the hole wall of the limiting hole. The spray assembly includes a water supply branch pipe and a spray nozzle connected to the upper end of the water supply branch pipe. The water supply branch pipe is arranged on the baffle plate, and the upper end of the water supply branch pipe extends obliquely upward from the baffle plate so that the spray nozzle is located in the open space.

2. The environmentally friendly coal mine conveying equipment according to claim 1 is characterized in that: The water supply branch pipe is located on the outside of the baffle, and is arranged obliquely upward. A water supply intermediate pipe is also arranged on the outside of the baffle. The water supply intermediate pipe is located at the bottom of the baffle and extends in the left and right directions. The length of the water supply intermediate pipe is smaller than the length of the baffle, and both ends of the water supply intermediate pipe are raised relative to the baffle. The raised ends of the water supply intermediate pipe form connecting ends, and the connecting ends of the two connected water supply intermediate pipes are connected by a hose joint.

3. The environmentally friendly coal mine conveying equipment according to claim 1 is characterized in that: The support frame includes a cross beam extending in the left-right direction, and a plurality of longitudinal beams are arranged between the front and rear cross beams. The roller group is a module. The bottom of the connecting frame is supported on the corresponding cross beam. The connecting frame includes a U-shaped frame. The two ends of the U-shaped frame are inclined and bent inward to form a hanging arm. The hanging arm is provided with a bolt hole for the bolts fixing the baffle to pass through. The baffle is attached to the outside of the hanging arm.

4. The environmentally friendly coal mine conveying equipment according to claim 3 is characterized in that: The two side rollers and the two bottom rollers are both symmetrical front and back about the central cross section of the U-shaped frame, and the upper ends of the side rollers are hinged on the hanging arms.

5. The environmentally friendly coal mine conveying equipment according to claim 4 is characterized in that: A first support column and two second support columns are provided in the U-shaped frame. The two second support columns are symmetrically arranged front and back about the first support column. The height of the two second support columns is greater than the height of the first support column. The two ends of the bottom roller are respectively fixed to the first support column and the second support column, and the lower end of the side roller is floatingly assembled on the second support column.

6. The environmentally friendly coal mine conveying equipment according to claim 5 is characterized in that: The second support column is an angle steel. One side plate of the two side plates of the second support column is used for connection with the bottom roller. The other side plate is provided with an arc hole. The lower end of the side roller is a floating part. A connecting pin is provided on the floating part. The connecting pin is located in the arc hole. When the side roller swings within a certain range, the connecting pin moves in the arc hole. The bottom side of the floating part is supported by a floating mechanism. The floating mechanism includes a fixed column, a reset spring and a floating cap. The fixed column is a step column. The reset spring is sleeved on the thin section of the fixed column. The other end of the reset spring is fixed to the inner side of the floating cap. A blind hole is provided in the center of the floating cap. The floating cap is sleeved on the thin section of the fixed column.

7. The environmentally friendly coal mine conveying equipment according to claim 6 is characterized in that: A concentric annular groove is arranged at the lower end of the floating cap on the periphery of the blind hole for the upper end of the reset spring to be installed therein.

8. The environmentally friendly coal mine conveying equipment according to claim 1 is characterized by: When two adjacent support frames are butt-jointed in an end-to-end manner, a limit hanger is provided on the butt-jointing bolt, a through-hole is provided on the upper part of the limit hanger for the butt-jointing bolt to pass through, a limit protrusion is provided on the lower part of the limit hanger, the limit hanger is a thin plate part, the limit protrusion is protruded along the thickness direction of the limit hanger, and the limit protrusion is inserted into the limit hole.

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