Dustproof device of hoisting grab bucket for bituminous coal transfer

Abstract

The utility model provides a hoisting grab bucket dustproof device for bituminous coal transfer, and relates to the technical field of hoisting grab bucket dust prevention, the hoisting grab bucket dustproof device for bituminous coal transfer comprises a holder, a grab bucket, a fixing frame, a fixing plate, a connecting rod, a hydraulic telescopic device, a motor and a winding wheel, the holder is provided with a supporting frame, and the two ends of the supporting frame are respectively provided with a fixed pulley; the device comprises a holding frame, a fixed pulley is arranged on the holding frame, dust covers are arranged on the two sides of the holding frame respectively, swing rods are arranged on the dust covers, one ends of the swing rods are rotationally connected with the holding frame, the device further comprises connecting ropes, one ends of the connecting ropes are fixedly connected with the dust covers, and the other ends of the connecting ropes are fixedly connected with a winding wheel after bypassing the fixed pulley. The grab bucket is simple in structure and convenient to use, coal powder leaked from a gap between the two grab buckets can be collected, the side portions and the bottoms of the grab buckets can be effectively shielded in the gale weather, and therefore the coal powder in the grab buckets is difficult to float out in the transferring process, and pollution to the surrounding environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust prevention for hanging grab buckets, in particular to a dust prevention device for hanging grab buckets used for bituminous coal transfer. Background Art

[0002] Bituminous coal contains a large amount of coal powder. In the drier season, when the grab bucket at the dock grabs the material to the hopper, a lot of coal powder will adhere to the bottom gap and the outer surface of the grab bucket. Because the dock is located in a wide area and is often accompanied by strong winds, the coal powder will be scattered over a large area, causing great pollution to the surrounding environment. Utility Model Content

[0003] The utility model aims to provide a dust prevention device for a grab bucket used for bituminous coal transfer, aiming to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the dust prevention device of the grab bucket for bituminous coal transfer comprises a retaining frame and two grab buckets symmetrically arranged below the retaining frame, a fixing frame is arranged between the retaining frame and the grab bucket, a fixing plate is arranged on the grab bucket, one end of the fixing plate is rotatably connected to the fixing frame, and also comprises a connecting rod, one end of the connecting rod is rotatably connected to the other end of the fixing plate, and the other end of the connecting rod is rotatably connected to the retaining frame, a hydraulic telescopic device is arranged on the fixing frame, and the output end of the hydraulic telescopic device is fixedly connected to the retaining frame, a motor is arranged on the retaining frame, and a winding wheel is arranged at the output end of the motor, a supporting frame is arranged on the retaining frame, and fixed pulleys are respectively arranged at both ends of the supporting frame, and dust covers are respectively arranged on both sides of the retaining frame, a swing rod is arranged on the dust cover, one end of the swing rod is rotatably connected to the retaining frame, and also comprises a connecting rope, one end of the connecting rope is fixedly connected to the dust cover, and the other end of the connecting rope is fixedly connected to the winding wheel after passing around the fixed pulley.

[0005] Preferably, when the winding wheel winds up the connecting rope, the maximum height of the connecting rope and the dust cover connection point is less than the height of the fixed pulley.

[0006] Preferably, an annular area is formed between the support frame and the fixed pulley, and when the connecting rope is retracted and released by the reel, the connecting rope is always located in the annular area formed between the support frame and the fixed pulley.

[0007] Preferably, a slot is provided at the lower end of one of the dust covers, and a protrusion is provided at the lower end of the other dust cover. When the two dust covers are put together, the protrusion is located inside the slot.

[0008] Preferably, after the two dust covers and the two grab buckets are assembled respectively, the two grab buckets are completely located inside the two dust covers.

[0009] The beneficial effects of the utility model are:

[0010] The dust cover in the device can collect coal powder falling from the outer surface of the grab, and can also collect coal powder leaking from the gap between the two grabs. In windy weather, it can effectively cover the sides and bottom of the grab, making it difficult for the coal powder in the grab to spread out during transportation, reducing the pollution to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0012] Figure 2 This is a schematic diagram with the dust cover opened.

[0013] Figure 3 This is a schematic diagram of the dust cover after closing.

[0014] In the figure: 1. rope; 2. retaining frame; 3. grab bucket; 4. fixing frame; 5. fixing plate; 6. connecting rod; 7. hydraulic telescopic device; 8. motor; 9. winding wheel; 10. supporting frame; 11. fixed pulley; 12. dust cover; 13. swing arm; 14. connecting rope; 15. protrusion. DETAILED DESCRIPTION

[0015] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0016] like Figure 1-3 As shown, a dust prevention device for a grab bucket for transferring bituminous coal comprises a retaining frame 2 and two grab buckets 3 symmetrically arranged below the retaining frame 2, a fixing frame 4 is arranged between the retaining frame 2 and the grab bucket 3, a fixing plate 5 is arranged on the grab bucket 3, one end of the fixing plate 5 is rotatably connected to the fixing frame 4, and a connecting rod 6 is also included, one end of the connecting rod 6 is rotatably connected to the other end of the fixing plate 5, and the other end of the connecting rod 6 is rotatably connected to the retaining frame 2, a hydraulic telescopic device 7 is arranged on the fixing frame 4, and the output end of the hydraulic telescopic device 7 is connected to the retaining frame 2 Fixed connection, a motor 8 is arranged on the retaining frame 2, a winding wheel 9 is arranged at the output end of the motor 8, a support frame 10 is arranged on the retaining frame 2, fixed pulleys 11 are arranged at both ends of the support frame 10, dust covers 12 are arranged on both sides of the retaining frame 2, a rocker arm 13 is arranged on the dust cover 12, one end of the rocker arm 13 is rotatably connected to the retaining frame 2, and also includes a connecting rope 14, one end of the connecting rope 14 is fixedly connected to the dust cover 12, and the other end of the connecting rope 14 is fixedly connected to the winding wheel 9 after passing around the fixed pulley 11.

[0017] The device is hoisted by a rope 1. When the coal powder is grabbed by the grab 3, the device is moved to the position where the coal powder is placed by the rope 1, and then the device is vertically controlled to move downward, and then the grab 3 is sunk into the coal powder by its own gravity, and then the output end of the hydraulic telescopic device 7 is controlled to shrink. At this time, the distance between the retaining frame 2 and the fixing frame 4 is shortened, and then the two grabs 3 are made to approach each other through the cooperation of the fixing plate 5 and the connecting rod 6, and a large amount of coal powder is grabbed between the two grabs 3, and then the two grabs 3 are controlled to move upward by the rope 1. When the grab 3 moves to an appropriate height, the motor 8 is controlled to start, and the output end of the motor 8 rotates and drives the winding. The wheel 9 rotates and releases the connecting rope 14 on the winding wheel 9. Under the action of gravity, the two dust covers 12 move downward until the two dust covers 12 are completely pieced together. The coal powder adhered to the outer surface of the grab 3 and the coal powder dropped from the gap of the grab 3 directly fall onto the two dust covers 12, thereby effectively reducing the dispersion of coal powder during air transfer. When releasing the coal powder in the grab 3, the motor 8 first drives the winding wheel 9 to reel in the connecting rope 14, so that the two dust covers 12 are opened to facilitate the start-up of the hydraulic telescopic device 7, and the two grabs 3 are opened, so that the coal powder in the grab 3 can fall out of the grab 3.

[0018] Furthermore, when the winding wheel 9 winds up the connecting rope 14, the maximum height of the connection point between the connecting rope 14 and the dust cover 12 is less than the height of the fixed pulley 11, ensuring that the connecting rope 14 can stably control the rise and fall of the dust cover 12 and prevent the fixed pulley 11 from being too low and affecting the normal rotation of the dust cover 12.

[0019] Furthermore, an annular area is formed between the support frame 10 and the fixed pulley 11. When the connecting rope 14 is retracted and released by the winding wheel 9, the connecting rope 14 is always located in the annular area formed between the support frame 10 and the fixed pulley 11. During the use of the dust cover 12, no matter whether the connecting rope 14 is in a retracted or rolled state, and when the dust cover 12 and the grab bucket 3 are collided, the connecting rope 14 can be stably located in the area between the support frame 10 and the fixed pulley 11 to prevent the connecting rope 14 from detaching from the fixed pulley 11.

[0020] Furthermore, a slot is provided at the lower end of one of the dust covers 12, and a protrusion 15 is provided at the lower end of the other dust cover 12. When the two dust covers 12 are assembled together, the protrusion 15 is located inside the slot. Through the cooperation between the slot and the protrusion 15, the sealing performance of the dust covers 12 after assembly can be improved, preventing coal powder from leaking out from the gap between the two dust covers 12.

[0021] Furthermore, after the two dust covers 12 and the two grab buckets 3 are assembled, the two grab buckets 3 are completely located inside the two dust covers 12 , thereby reducing the impact of strong wind on the upper layer of coal powder in the two grab buckets 3 .

[0022] The dust cover 12 may be made of a transparent rubber material, which facilitates observation of the interior of the dust cover 12 and the condition of the grab bucket 3 .

[0023] The dust cover 12 in the device can collect coal powder falling from the outer surface of the grab bucket 3, and can also collect coal powder leaking from the gap between the two grab buckets 3. In windy weather, it can effectively shield the sides and bottom of the grab bucket 3, making it difficult for the coal powder in the grab bucket 3 to float out during transportation, thereby reducing the pollution caused to the surrounding environment.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A dust prevention device for a grab bucket for bituminous coal transfer, characterized in that: The invention comprises a retaining frame (2) and two grab buckets (3) symmetrically arranged below the retaining frame (2); a fixing frame (4) is arranged between the retaining frame (2) and the grab bucket (3); a fixing plate (5) is arranged on the grab bucket (3); one end of the fixing plate (5) is rotatably connected to the fixing frame (4); and a connecting rod (6) is arranged; one end of the connecting rod (6) is rotatably connected to the other end of the fixing plate (5); the other end of the connecting rod (6) is rotatably connected to the retaining frame (2); a hydraulic telescopic device (7) is arranged on the fixing frame (4); the output end of the hydraulic telescopic device (7) is fixedly connected to the retaining frame (2); and the retaining frame (2) is provided with a plurality of hydraulic telescopic devices. ) is provided with a motor (8), a winding wheel (9) is provided at the output end of the motor (8), a support frame (10) is provided on the retaining frame (2), fixed pulleys (11) are provided at both ends of the support frame (10), dust covers (12) are provided on both sides of the retaining frame (2), a rocker arm (13) is provided on the dust cover (12), one end of the rocker arm (13) is rotatably connected to the retaining frame (2), and also includes a connecting rope (14), one end of the connecting rope (14) is fixedly connected to the dust cover (12), and the other end of the connecting rope (14) is fixedly connected to the winding wheel (9) after passing around the fixed pulley (11).

2. The dust prevention device for the grab bucket for bituminous coal transfer according to claim 1 is characterized in that: When the winding wheel (9) winds up the connecting rope (14), the maximum height of the connection point between the connecting rope (14) and the dust cover (12) is less than the height of the fixed pulley (11).

3. The dust prevention device for the grab bucket for bituminous coal transfer according to claim 1 is characterized in that: An annular area is formed between the support frame (10) and the fixed pulley (11), and when the connecting rope (14) is retracted and released by the reel (9), the connecting rope (14) is always located in the annular area formed between the support frame (10) and the fixed pulley (11).

4. The dust prevention device for the grab bucket for bituminous coal transfer according to claim 1 is characterized in that: A slot is provided at the lower end of one of the dust covers (12), and a protrusion (15) is provided at the lower end of the other dust cover (12). When the two dust covers (12) are assembled together, the protrusion (15) is located inside the slot.

5. The dust prevention device for a grab bucket for bituminous coal transfer according to any one of claims 1 to 4, characterized in that: After the two dust covers (12) and the two grab buckets (3) are assembled, the two grab buckets (3) are completely located inside the two dust covers (12).

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