A coal unloading funnel receiving car

Abstract

The utility model relates to coal mine tunneling equipment technical field, especially disclose a kind of unloading coal hopper material receiving car, to solve the problem of existing equipment coal spill coal, poor adaptability, low efficiency. Its technical scheme includes: high-strength manganese steel rectangular frame is used to frame, bottom is equipped with walking wheel adaptation mine track;Frame is installed hydraulic push rod one through connecting frame, its upper end is connected with the ball socket seat of hopper, realizes hopper height and angle adjustment;Hopper is trapezoidal structure of wide upper narrow lower, lower mouth is connected rotatable bottom plate, bottom plate two sides are equipped with baffle and prevent side leakage, rear end is driven by the "sliding bar - sliding groove" structure control opening and closing angle of hydraulic push rod two. The utility model is through fully enclosed anti-spraying structure, hydraulic self-adapting adjustment and track movement design, make coal spill rate reduce, adjust efficiency to promote, adapt shallow buried depth half coal rock roadway rapid tunneling's "tunneling - support - transport" continuous operation requirement, with remarkable practicality and economy.

Description

Technical Field

[0001] This utility model relates to the field of coal mine tunneling equipment technology, and in particular to a coal unloading hopper receiving vehicle. Background Technology

[0002] In rapid coal mining operations, the coal mined by the tunneling and anchoring machine needs to be transferred via downstream transportation equipment (such as long-distance secondary conveyor belts). The unloading hopper receiving car is the key equipment connecting the two. Existing technologies have the following prominent problems:

[0003] Coal spillage and leakage are serious problems: Traditional material receiving devices are mostly open structures. During the unloading process, coal spills out from the edges due to impact, deviation and other factors, with a coal spillage and leakage rate of over 8%. This not only wastes resources, but also requires additional manual labor for cleaning (the average daily cleaning time exceeds 4 hours), which seriously affects the efficiency of operation.

[0004] Poor adaptability: The roadway cross-section and coal seam thickness of shallow-buried deep semi-coal-rock roadways (such as the III-2 coal seam in Zhuanlongwan Coal Mine) fluctuate. The existing equipment has a fixed height and angle, which cannot adapt to the dynamic connection requirements between the discharge port (height 1500-1900mm) of the roadheader and the secondary conveyor belt. The connection gap often reaches more than 50mm, which further aggravates the coal leakage problem.

[0005] Low efficiency in movement and adjustment: Equipment movement requires disassembly and reassembly, and a single relocation takes more than 2 hours, making it impossible to advance synchronously with the tunneling face (monthly advance needs to reach 3250 meters); angle adjustment relies on manual prying, which is inaccurate and cumbersome to operate, making it difficult to meet the requirements of continuous "tunneling-supporting-transporting" operations.

[0006] Insufficient durability: The impact of coal and rock mixtures causes the receiving hopper to wear out quickly, with an average service life of only 6 months, resulting in high equipment maintenance costs (annual maintenance costs exceeding 100,000 yuan).

[0007] Therefore, there is an urgent need to develop a coal unloading hopper receiving vehicle that has good anti-coal spillage effect, strong adaptability, convenient adjustment and durability to solve the above-mentioned technical pain points. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a coal unloading hopper receiving vehicle, which solves the technical problems of existing coal unloading hopper receiving vehicles used for rapid coal mine tunneling, such as serious coal spillage and leakage, inability to adapt to the dynamic connection requirements of the tunneling and anchoring integrated machine and the long-distance secondary conveyor belt, low efficiency of movement and angle / height adjustment, and insufficient equipment durability.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A coal unloading hopper receiving car includes a car frame made of high-strength manganese steel, and the overall structure is a rectangular frame.

[0011] The chassis is equipped with four wheels at the bottom corners, which are compatible with the mine track to facilitate the movement of the device as the tunneling face advances.

[0012] Among them, a connecting frame is fixedly installed on the frame, and a mounting seat is fixed at the front and rear ends on both sides of the connecting frame. A hydraulic push rod is fixed on each mounting seat by bolts.

[0013] Above the connecting frame is a coal spill prevention receiving hopper assembly, which includes a hopper, a bottom plate, and two hydraulic push rods.

[0014] Preferably, the hopper body has a trapezoidal structure that is wider at the top and narrower at the bottom. The size of the upper opening matches the discharge port of the integrated excavation and anchoring machine, and the lower opening is the discharge port, which is adapted to the width of the long-distance secondary conveyor belt.

[0015] Preferably, two connecting seats with rings are fixed at the front end of the hopper outlet, and the left and right sides of the front end of the base plate are rotatably connected to the two connecting seats respectively;

[0016] The upper surface of the base plate is fitted with the hopper discharge port.

[0017] Preferably, baffles are fixed on both the left and right sides of the upper surface of the base plate, and fixing seats are fixed on both the left and right sides of the rear end of the base plate;

[0018] The fixed base has a sliding groove one and a sliding groove two, which are connected.

[0019] Preferably, two mounting seats three and one mounting seat two are fixed on the left and right outer walls of the hopper. The mounting seat three is a ball socket seat, the rod end of the hydraulic push rod one is spherical, and the upper rod ends of the four hydraulic push rods one are respectively connected to the ball sockets of the four mounting seats three.

[0020] Preferably: the second mounting base is used to fix the second hydraulic push rod, the lower end of the second hydraulic push rod is fixed with a sliding rod, the rod end is locked in the first sliding groove, and the sliding rod is locked in the second sliding groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] Significantly effective in preventing coal spillage: Through the design of "trapezoidal hopper + baffle + sealed fit structure", the wear-resistant lining plate on the inner wall of the hopper reduces impact splashing, the gap between the baffles on both sides and the outer wall of the hopper is ≤3mm, and with the precise unloading control of the adjustable bottom plate, the coal spillage and leakage rate is reduced.

[0023] Height and angle adaptive adjustment: It adopts a structure of 4 sets of "ball socket connection + hydraulic push rod" to realize stepless adjustment of the hopper and support ±5° horizontal angle fine adjustment, perfectly adapting to working conditions such as roadway undulation and equipment offset, without the need for manual intervention.

[0024] The hydraulic push rod driven "slide rod-slide groove" structure enables the bottom plate opening and closing angle (0-30°) adjustment response time to be ≤6s. It can be linked with the coal flow transportation system to achieve automatic unloading and meet the high-efficiency production requirements of 3250 meters per month.

[0025] The hopper is made of Q345B manganese steel + NM450 wear-resistant liner (10mm thick), which extends its service life. Attached Figure Description

[0026] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0027] Figure 1 This is an overall structural diagram of the present invention;

[0028] Figure 2 This is a structural diagram of the connecting frame in this utility model;

[0029] Figure 3 This is a structural diagram of hydraulic push rod 2 and hydraulic push rod 1 in this utility model;

[0030] Figure 4 This is a structural diagram of the fixed base in this utility model.

[0031] Legend: 1. Frame; 2. Connecting frame; 3. Hopper; 4. Connecting seat; 6. Base plate; 7. Hydraulic push rod one; 8. Mounting seat one; 9. Mounting seat three; 10. Hydraulic push rod two; 11. Mounting seat two; 12. Slide groove one; 13. Slide groove two; 14. Slide rod; 15. Fixed seat; 16. Baffle. Detailed Implementation

[0032] This application provides a coal unloading hopper receiving vehicle, which effectively solves the technical problems of existing coal unloading hopper receiving vehicles used for rapid coal mine tunneling, such as serious coal spillage and leakage, inability to adapt to the dynamic connection requirements of the tunneling and anchoring integrated machine and the long-distance secondary conveyor belt, low efficiency of movement and angle / height adjustment, and insufficient equipment durability.

[0033] Example

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the overall technical solution in this application embodiment is as follows:

[0035] To address the problems existing in the prior art, this utility model achieves three major functions—anti-spillage, adaptive connection, and convenient movement—through an integrated design of a high-strength frame, an adjustable anti-spillage coal receiving hopper, and a hydraulically driven adjustment mechanism, thereby helping mines improve coal transport efficiency.

[0036] The frame 1 is made of Q345B high-strength manganese steel welded together, and the whole is a rectangular frame structure with a size design adapted to the underground space of coal mines.

[0037] Walking mechanism: The bottom four corners of the frame 1 are fixed with cast steel wheels for coal mines by bolts. The wheel axles are made of 40Cr heat treatment and equipped with dustproof and sealed bearings to prevent coal dust and sewage from entering the mine and ensure smooth movement.

[0038] The connecting frame 2 is a transitional connecting part between the vehicle frame 1 and the anti-spillage coal receiving hopper assembly. It is fixedly connected to the vehicle frame 1 by high-strength bolts through the pre-set bolt holes. A mounting seat 8 is welded to the front and rear ends of each side of the connecting frame 2. The mounting seat 8 has an M16 threaded hole in the center for fixing the hydraulic push rod 7.

[0039] Hydraulic push rod 7 and angle adjustment structure: The lower end of hydraulic push rod 7 is fixed to mounting base 8 by bolts, and the upper end of the rod is designed as a spherical structure; correspondingly, two mounting bases 9 (ball socket seats) are welded to the left and right outer walls of hopper 3. The spherical rod end and the ball socket seat are fitted with a clearance to form a four-point support + ball socket connection angle adjustment structure. Through the independent extension and retraction of the four hydraulic push rods 7, the horizontal angle of hopper 3 can be finely adjusted within the range of ±5°, which is suitable for scenarios with slight inclination of the roadway or displacement of the discharge port of the tunneling and anchoring machine. At the same time, the height of hopper 3 can be finely adjusted to meet the connection requirements of different coal seam roadways.

[0040] The hopper body is made of welded steel plate, and the overall structure is a trapezoidal shape that is wider at the top and narrower at the bottom.

[0041] Top opening (feed inlet): Matches the discharge outlet of the integrated excavator and anchor machine;

[0042] Lower outlet (discharge port): Aligned with the center of the long-distance secondary conveyor belt, two belt ring connecting seats 4 are welded to the front end of the discharge port for connecting the bottom plate 6.

[0043] The inner wall of the bucket is lined with 10mm thick NM450 wear-resistant steel plates to reduce coal impact wear.

[0044] A hinge shaft is welded to each of the left and right sides of the front end of the base plate 6. The hinge shaft passes through the ring of the connecting seat 4 to form a rotating pair, ensuring that the base plate 6 can be opened and closed flexibly around the front end.

[0045] Side leakage prevention baffle 16: A baffle 16 is welded to each of the left and right sides of the upper surface of the bottom plate 6. The outer side of the baffle 16 is attached to the inner wall of the hopper 3 to prevent coal from spilling from both sides of the bottom plate 6 during unloading.

[0046] Rear adjustment structure: A fixed seat 15 (material Q345B, size 100×80×30mm) is welded to each of the left and right rear sides of the base plate 6. A cross-shaped slide groove is opened on the fixed seat 15 (slide groove 12 is vertical; slide groove 2 is horizontal, and the two are connected) to cooperate with the hydraulic push rod 2 10 to realize the opening and closing control of the base plate 6.

[0047] The upper end of the hydraulic push rod 10 is fixed to the mounting base 11 (material Q235, size 80×60×15mm) welded to the outer wall of the hopper 3 by M12 bolts. A sliding rod 14 is welded to the lower end of the rod. The sliding rod 14 is inserted into the sliding groove 13 to form a mating structure. When the hydraulic push rod 10 extends or retracts, the sliding rod 14 moves up and down along the sliding groove 12 and moves horizontally along the sliding groove 13, driving the bottom plate 6 to rotate around the front hinge axis, realizing "0-30° opening and closing angle adjustment". The unloading amount can be adjusted according to the conveyor belt speed to prevent coal accumulation and blockage.

[0048] An explosion-proof control box is installed on one side of the chassis 1. It adopts an ExdIICT4 explosion-proof rating design and has a built-in PLC controller and hydraulic push rod drive module, enabling the following:

[0049] Manual control: Four hydraulic push rods 7 (height / angle adjustment) and two hydraulic push rods 10 (bottom plate opening and closing) can be operated independently via buttons on the box surface;

[0050] Linkage control: It connects with the coal flow transportation centralized control system in the underground coal mine and automatically adjusts the opening angle of the bottom plate 6 according to the material output of the tunneling and anchoring machine and the speed of the secondary conveyor belt to achieve "unloading on demand";

[0051] A nitrile rubber sealing strip can be attached to the edge of the feed inlet of hopper 3. When it is connected to the discharge port of the tunneling and anchoring machine, the sealing strip fits the gap and reduces dust diffusion. Explosion-proof and dustproof covers are installed on the axle ends of the traveling wheels to prevent coal dust from entering.

[0052] Control box and wiring assembly:

[0053] The explosion-proof control box is fixed to one side of the frame 1 with bolts, and the hydraulic oil pipe of hydraulic push rod 7 and the cable of hydraulic push rod 10 are connected.

[0054] The wiring is inserted into an explosion-proof junction box and sealed with a stuffing box to ensure that the explosion-proof performance meets the standards.

[0055] Standard material receiving and unloading process:

[0056] During tunneling operations, the coal and rock mixture (particle size ≤ 300mm) mined by the tunneling and anchoring machine falls into hopper 3. The trapezoidal structure of hopper 3 guides the material to converge towards the center, and the wear-resistant lining plate on the inner wall reduces impact wear.

[0057] The explosion-proof control box automatically adjusts the extension and retraction of the hydraulic push rod 10 according to the conveying speed of the secondary conveyor belt (via the signal feedback from the belt scale), and controls the opening and closing angle of the bottom plate 6 (usually 10-20°) to ensure that the coal is evenly unloaded onto the secondary conveyor belt and avoids accumulation.

[0058] The baffle 16 fits snugly against the outer wall of the hopper 3 to prevent coal from spilling from both sides of the bottom plate. The coal spillage and leakage rate is controlled to below 1%, and no manual cleaning is required.

[0059] Operating condition adjustment and adaptation:

[0060] When the roadway is slightly tilted (≤3°), the extension and retraction of the two hydraulic push rods 7 on one side can be adjusted by the control box to keep the hopper 3 horizontal and prevent the material from tilting to one side and causing coal spillage.

[0061] When the height of the discharge port of the integrated tunneling and anchoring machine changes (such as fluctuations in coal seam thickness), the four hydraulic push rods 7 are adjusted simultaneously to adjust the height of the hopper 3, ensuring seamless connection between the inlet and outlet.

[0062] Moves as the working face advances:

[0063] When the tunneling face advances 50-100m (long-distance conveyor belt extension cycle), the material receiving car is controlled by the control box to move along the track. The moving speed is synchronized with the tunneling speed (0.5-1m / min). There is no need to disassemble the equipment, saving relocation time (single relocation time ≤30min, which is 60% more efficient than traditional equipment).

[0064] Once in place, only a minor adjustment to hydraulic push rod 7 is needed to restore the connection, without affecting the continuous "excavation-support-transport" operation.

[0065] In summary, this utility model is fully adapted to the field requirements of rapid excavation in shallow-buried semi-coal and rock tunnels, solves the core pain points of existing equipment, and combines practicality, economy and safety.

[0066] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A coal unloading hopper receiving car, comprising a car frame (1), characterized in that, The frame (1) is made of high-strength manganese steel and has a rectangular frame structure. The frame (1) is equipped with four wheels at the bottom corners. The wheels are compatible with the mine track, which makes it easy for the device to move with the tunneling face. Among them, a connecting frame (2) is fixedly installed on the frame (1), and mounting seats (8) are fixed on the front and rear ends of both sides of the connecting frame (2). A hydraulic push rod (7) is fixed on each mounting seat (8) by bolts. The connecting frame (2) is equipped with a coal spillage receiving hopper assembly, which includes a hopper (3), a bottom plate (6) and two hydraulic push rods (10).

2. The coal unloading hopper receiving car as described in claim 1, characterized in that, The hopper (3) has a trapezoidal structure that is wider at the top and narrower at the bottom. The size of the upper opening matches the discharge port of the integrated excavation and anchoring machine, and the lower opening is the discharge port, which is adapted to the width of the long-distance secondary conveyor belt.

3. The coal unloading hopper receiving car as described in claim 2, characterized in that, Two connecting seats (4) with rings are fixed at the front end of the discharge port of the hopper (3), and the left and right sides of the front end of the bottom plate (6) are rotatably connected to the two connecting seats (4); The bottom plate (6) has its upper surface attached to the discharge port of the hopper (3).

4. A coal unloading hopper receiving car as described in claim 3, characterized in that, Baffles (16) are fixed on the left and right sides of the upper surface of the base plate (6), and fixing seats (15) are fixed on the left and right sides of the rear end of the base plate (6). Among them, the fixed base (15) is provided with a sliding groove one (12) and a sliding groove two (13), and the sliding groove one (12) and the sliding groove two (13) are connected.

5. A coal unloading hopper receiving car as described in claim 4, characterized in that, Two mounting seats three (9) and one mounting seat two (11) are fixed on the left and right outer walls of the hopper (3). Mounting seat three (9) is a ball socket seat. The rod end of hydraulic push rod one (7) is spherical. The rod ends of the four hydraulic push rods one (7) are respectively connected to the ball sockets of the four mounting seats three (9).

6. The coal unloading hopper receiving car as described in claim 5, characterized in that, Mounting base two (11) is fixedly installed with hydraulic push rod two (10). The lower end of hydraulic push rod two (10) is fixed with slide rod (14). The rod end is stuck in slide groove one (12), and slide rod (14) is stuck in slide groove two (13).

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