Lifting device for coal mining

Abstract

The utility model discloses a lifting device for coal mining, which relates to the technical field of lifting devices and comprises a bottom plate, a stopping unit, a lifting unit and a buffering and damping unit. A conveying belt is fixedly connected to the middle of the upper end of the bottom plate, and the upper end of the conveying belt is higher than that of the bottom plate. The stopping unit comprises mounting frames, limiting shafts, springs, a stopping plate, a limiting friction plate, an electromagnetic device and a speed detection device, the two mounting frames are fixedly connected to the left side and the right side of the upper end of the bottom plate, the multiple limiting shafts are fixedly connected to the outer side of the limiting friction plate, and the outer sides of the limiting shafts are slidably connected with the mounting frames; the stopping plate is fixedly connected with the multiple limiting shafts, and springs are connected between the stopping plate on the outer sides of the limiting shafts and the mounting frame in a sleeving mode. Equipment below the coal mine raw material storage device can be prevented from being damaged due to strong impact when the coal mine raw material storage device falls down.

Description

Technical Field

[0001] This utility model relates to the field of hoisting device technology, specifically to hoisting devices for coal mining. Background Technology

[0002] Coal mines 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 excavate roadways underground to mine the coal. This is called 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 the coal. This is called an open-pit coal mine. Most coal mines in my country are underground coal mines. In underground coal mines, it is necessary to transport the bottom ore or mining equipment to the upper mining area. Therefore, hoisting devices are needed to complete the upward transportation of the bottom ore or mining equipment.

[0003] In existing coal mining hoisting devices, rope breakage and other issues can occur after long-term use. In the event of a breakage, the device cannot be stopped quickly. Furthermore, when coal raw material storage devices fall, the equipment below is subjected to strong impacts due to gravity and other factors, which can cause damage. Therefore, we propose a hoisting device for coal mining. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a hoisting device for coal mining that can quickly stop the storage device when danger occurs, and can prevent the equipment below from being damaged by strong impact when the coal raw material storage device falls, thus effectively solving the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hoisting device for coal mining, comprising a base plate, a stop unit, a lifting unit, and a buffer and shock absorption unit;

[0006] Base plate: A conveyor belt is fixedly connected to the upper middle part, and the upper end of the conveyor belt is higher than the upper end of the base plate;

[0007] The stopping unit includes a mounting frame, a limiting shaft, a spring, a blocking plate, a limiting friction plate, an electromagnetic device, and a speed detection device. Two mounting frames are fixedly connected to the upper left and right sides of the base plate. Multiple limiting shafts are fixedly connected to the outer side of the limiting friction plate. The outer side of the limiting shaft is slidably connected to the mounting frame. The blocking plate is fixedly connected to the multiple limiting shafts. A spring is sleeved between the outer blocking plate of the limiting shaft and the mounting frame. An electromagnetic device is fixedly connected to the inner side of the limiting friction plate. Two speed detection devices are fixedly connected to the upper left and right sides of the base plate.

[0008] Lifting unit: Installed on the stopping unit;

[0009] Shock absorption unit: installed on the lifting unit.

[0010] The mounting bracket limits the position of the limiting shaft. The speed detection device detects whether the storage device is falling rapidly. When the storage device falls rapidly, the electromagnetic device is energized, and the limiting friction plate moves under the action of the electromagnetic force. The limiting friction plate and the electromagnetic device quickly stop the storage device. After the power is cut off, the spring allows the limiting friction plate to reset. The electromagnetic device can quickly stop the storage device.

[0011] Furthermore, the lifting unit includes a winding drum, a wire rope, a horizontal mounting frame, a gravity detection device, a roller, a motor, and a hook. The winding drum is rotatably connected to the upper rear side of the mounting frame. The motor is fixedly connected to the left end of the mounting frame, and the motor's output shaft is fixedly connected to the winding drum. The horizontal mounting frame is fixedly connected to the upper middle part of the mounting frame. Two gravity detection devices are fixedly connected to the lower left and right sides of the horizontal mounting frame, and a roller is rotatably connected between the gravity detection devices. One end of the wire rope is wound around the winding drum, and the wire rope passes over the upper end of the roller and is fixedly connected to the hook. The motor drives the winding drum to rotate, the horizontal mounting frame limits the gravity detection device, the gravity detection device limits and detects the roller, and the gravity detection device detects the applied tension. When the gravity detection device detects an excessive change in gravity, it activates a stop device. The wire rope drives the hook to move the device, and the hook lifts and raises the storage device.

[0012] Furthermore, the lifting unit includes a storage bin and limiting grooves. Four limiting grooves are provided at both ends of the storage bin, and these grooves are slidably connected to both sides of a limiting friction plate. The storage bin stores raw materials, and the limiting grooves limit the movement of the storage bin.

[0013] Furthermore, the buffer and shock absorption unit includes a concealed slot, a hydraulic press, and a mounting plate. Two concealed slots are formed on the left and right sides of the upper rear side of the base plate. Two hydraulic presses are fixedly connected to the inside of the concealed slots, and the mounting plate is fixedly connected to the upper end of each hydraulic press. The hydraulic presses are installed through the concealed slots, and the mounting plate is raised and lowered using the hydraulic presses. The shock absorption device is also raised and lowered using the hydraulic presses, and the shock absorption device can be concealed through the concealed slots.

[0014] Furthermore, the buffer and shock absorption unit also includes damping rods and a buffer plate. Multiple damping rods are fixedly connected to the mounting plate, and a buffer plate is fixedly connected to the upper end of each damping rod. When the storage bin is stopped, the damping rods and buffer plate can dampen and cushion the falling of the storage bin.

[0015] Furthermore, it also includes a limiting plate and an adjusting plate. Two adjusting plates are fixedly connected to the left and right sides of the upper middle part of the base plate, and a limiting plate is fixedly connected to the middle of the upper rear side of the base plate. The adjusting plates allow the storage box to be adjusted to the correct angle regardless of how it is placed on the conveyor belt, while the limiting plate limits the position of the storage box.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This hoisting device for coal mining has the following advantages:

[0017] 1. In the hoisting device of this coal mine, when the storage device falls rapidly, the electromagnetic device is energized and the limiting friction plate moves under the action of electromagnetic force. The limiting friction plate and the electromagnetic device quickly stop the storage device, which can quickly stop the storage device in case of danger.

[0018] 2. The hoisting device in this coal mine uses a hydraulic press to raise and lower the shock absorber. The shock absorber can be hidden in a concealed slot, which can prevent the equipment below from being damaged by a strong impact when the coal raw material storage device falls. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This utility model Figure 1 A magnified view of the structure at point A in the middle;

[0021] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0022] Figure 4 This is a schematic diagram of the left side structure of this utility model.

[0023] In the diagram: 1. Base plate, 2. Conveyor belt, 3. Stopping unit, 31. Mounting frame, 32. Limiting shaft, 33. Spring, 34. Barrier plate, 35. Limiting friction plate, 36. Electromagnetic device, 37. Speed ​​detection device, 4. Lifting unit, 41. Winding drum, 42. Wire rope, 43. Horizontal mounting frame, 44. Gravity detection device, 45. Rolling wheel, 46. Motor, 47. Hook, 48. Storage box, 49. Limiting slide, 5. Buffer and shock absorption unit, 51. Hidden groove, 52. Hydraulic press, 53. Mounting plate, 54. Damping rod, 55. Buffer plate, 6. Limiting plate, 7. Adjusting plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This embodiment provides a technical solution: a hoisting device for coal mining, including a base plate 1, a stop unit 3, a lifting unit 4, and a buffer and shock absorption unit 5;

[0026] Base plate 1: A conveyor belt 2 is fixedly connected to the middle of the upper end, and the upper end of the conveyor belt 2 is higher than the upper end of the base plate 1;

[0027] Stopping Unit 3: Includes mounting bracket 31, limiting shaft 32, spring 33, blocking plate 34, limiting friction plate 35, electromagnetic device 36, and speed detection device 37. Two mounting brackets 31 are fixedly connected to the upper left and right sides of the base plate 1. Multiple limiting shafts 32 are fixedly connected to the outer side of the limiting friction plate 35, and the outer side of the limiting shafts 32 is slidably connected to the mounting bracket 31. The blocking plate 34 is fixedly connected to the multiple limiting shafts 32. A spring 33 is sleeved between the outer side of the blocking plate 34 and the mounting bracket 31. An electromagnetic device 36 is fixedly connected to the inner side of the limiting friction plate 35. The device 36 has two speed detection devices 37 fixedly connected to the upper left and right sides of the base plate 1. The limiting shaft 32 is limited by the mounting bracket 31. The speed detection device 37 detects whether the storage device is falling rapidly. When the storage device falls rapidly, the electromagnetic device 36 is energized. Under the action of the electromagnetic force, the limiting friction plate 35 moves. The limiting friction plate 35 and the electromagnetic device 36 quickly stop the storage device. After the power is cut off, the limiting friction plate 35 can be reset by the spring 33. The electromagnetic device can quickly stop the storage device.

[0028] Lifting unit 4: Installed on the stopping unit 3; Lifting unit 4 includes a winding drum 41, a wire rope 42, a horizontal mounting frame 43, a gravity detection device 44, a rolling wheel 45, a motor 46, and a hook 47. The winding drum 41 is rotatably connected to the upper rear side of the mounting frame 31. The motor 46 is fixedly connected to the left end of the mounting frame 31. The output shaft of the motor 46 is fixedly connected to the winding drum 41. The horizontal mounting frame 43 is fixedly connected to the middle of the upper end of the mounting frame 31. Two gravity detection devices 44 are fixedly connected to the left and right sides of the lower end of the horizontal mounting frame 43. The rolling wheel 45 is rotatably connected between the gravity detection devices 44. One end of the wire rope 42 is wound on the winding drum 41. The wire rope 42 passes over the upper end of the rolling wheel 45 and is fixedly connected to the hook 47. The motor 46 drives the winding drum 41 to rotate. The horizontal mounting frame 43 limits the gravity detection device 44. The gravity detection device 44 limits and detects the rolling wheel 45. The gravity detection device 44 detects the tension. When the gravity detection device 44 detects that the gravity change is too large, it will activate the stop device. The wire rope 42 drives the hook 47 to move the device. The hook 47 lifts and raises the storage device.

[0029] The lifting unit 4 includes a storage bin 48 and limiting grooves 49. Four limiting grooves 49 are provided at both ends of the storage bin 48, and these grooves 49 are slidably connected to both sides of the limiting friction plate 35. The storage bin 48 stores raw materials, and the limiting grooves 49 limit the movement of the storage bin 48.

[0030] Buffer and shock absorption unit 5: Installed on lifting unit 4, buffer and shock absorption unit 5 includes a concealed slot 51, a hydraulic press 52, and a mounting plate 53. Two concealed slots 51 are opened on the left and right sides of the upper rear side of the base plate 1. Two hydraulic presses 52 are fixedly connected to the inside of the concealed slots 51, and the mounting plate 53 is fixedly connected to the upper end of the hydraulic presses 52. The hydraulic presses 52 are installed through the concealed slots 51, the mounting plate 53 is raised and lowered through the hydraulic presses 52, the shock absorption device is raised and lowered through the hydraulic presses 52, and the shock absorption device can be concealed through the concealed slots 51.

[0031] The buffer and shock absorption unit 5 also includes damping rods 54 and buffer plates 55. Multiple damping rods 54 are fixedly connected to the upper part of the mounting plate 53, and buffer plates 55 are fixedly connected to the upper end of the damping rods 54. When the storage box 48 is stopped, the damping rods 54 and buffer plates 55 can dampen and cushion the fall of the storage box 48.

[0032] It also includes a limiting plate 6 and an adjusting plate 7. Two adjusting plates 7 are fixedly connected to the left and right sides of the upper middle part of the base plate 1, and a limiting plate 6 is fixedly connected to the upper rear middle part of the base plate 1. The adjusting plates 7 allow the storage box 48 to be adjusted to the correct angle no matter how it is placed on the conveyor belt 2, and the limiting plates 6 limit the storage box 48.

[0033] The working principle of the hoisting device for coal mining provided by this utility model is as follows: The mounting frame 31 limits the limiting shaft 32. The speed detection device 37 detects whether the device is falling rapidly. When the storage device falls rapidly, the electromagnetic device 36 is energized, and the limiting friction plate 35 moves under the action of the electromagnetic force. The limiting friction plate 35 and the electromagnetic device 36 quickly stop the storage device. After the power is cut off, the spring 33 allows the limiting friction plate 35 to reset. The electromagnetic device can quickly stop the storage device. The motor 46 drives the winding drum 41 to rotate. The horizontal mounting frame 43 limits the gravity detection device 44. The gravity detection device 44 limits and detects the rolling wheel 45. The gravity detection device 44 detects the tension. When the gravity detection device 44 detects an excessive change in gravity, it will activate the stopping device. The wire rope 42 drives the hook 47 to move the device, and the hook 47 lifts and raises the storage device. Raw materials are stored in the storage bin 48, which is limited by the limiting groove 49. A hydraulic press 52 is installed via a concealed groove 51, which raises and lowers the mounting plate 53 and the shock absorber. The shock absorber is also concealed via the concealed groove 51. When the storage bin 48 is stopped, the damping rod 54 and the buffer plate 55 dampen and cushion the fall of the storage bin 48. The adjusting plate 7 ensures that the storage bin 48 is positioned at the correct angle regardless of its location on the conveyor belt 2, and the limiting plate 6 limits its movement.

[0034] It is worth noting that the input terminal of the motor 46 disclosed in the above embodiments is electrically connected to the output terminal of the external power supply through an external PLC controller. All motors 46 are servo motors, and the external PLC controller controls the operation of the motor 46 using methods commonly used in the prior art.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A hoisting device for coal mining, characterized in that: It includes a base plate (1), a stop unit (3), a lifting unit (4), and a buffer and shock absorption unit (5); Base plate (1): A conveyor belt (2) is fixedly connected to the middle of the upper end, and the upper end of the conveyor belt (2) is higher than the upper end of the base plate (1); The stopping unit (3) includes a mounting bracket (31), a limiting shaft (32), a spring (33), a blocking plate (34), a limiting friction plate (35), an electromagnetic device (36), and a speed detection device (37). Two mounting brackets (31) are fixedly connected to the upper left and right sides of the base plate (1). Multiple limiting shafts (32) are fixedly connected to the outer side of the limiting friction plate (35). The outer side of the limiting shaft (32) is slidably connected to the mounting bracket (31). The blocking plate (34) is fixedly connected to the multiple limiting shafts (32). A spring (33) is sleeved between the outer blocking plate (34) of the limiting shaft (32) and the mounting bracket (31). An electromagnetic device (36) is fixedly connected to the inner side of the limiting friction plate (35). Two speed detection devices (37) are fixedly connected to the upper left and right sides of the base plate (1). Lifting unit (4): Installed on the stopping unit (3); Buffer and shock absorption unit (5): Installed on the lifting unit (4).

2. The hoisting device for coal mining according to claim 1, characterized in that: The lifting unit (4) includes a winding drum (41), a wire rope (42), a horizontal mounting frame (43), a gravity detection device (44), a rolling wheel (45), a motor (46), and a hook (47). The winding drum (41) is rotatably connected to the upper rear side of the mounting frame (31). The motor (46) is fixedly connected to the left end of the mounting frame (31). The output shaft of the motor (46) is fixedly connected to the winding drum (41). The horizontal mounting frame (43) is fixedly connected to the middle of the upper end of the mounting frame (31). Two gravity detection devices (44) are fixedly connected to the left and right sides of the lower end of the horizontal mounting frame (43). The rolling wheel (45) is rotatably connected between the gravity detection devices (44). One end of the wire rope (42) is wound on the winding drum (41). The upper end of the wire rope (42) passes over the rolling wheel (45) and is fixedly connected to the hook (47).

3. The hoisting device for coal mining according to claim 2, characterized in that: The lifting unit (4) includes a storage box (48) and a limiting slide groove (49). The storage box (48) has four limiting slide grooves (49) at its left and right ends. The limiting slide grooves (49) are slidably connected to the two sides of the limiting friction plate (35).

4. The hoisting device for coal mining according to claim 1, characterized in that: The buffer and shock absorption unit (5) includes a hidden groove (51), a hydraulic press (52) and a mounting plate (53). Two hidden grooves (51) are opened on the left and right sides of the upper rear side of the base plate (1). Two hydraulic presses (52) are fixedly connected to the inside of the hidden grooves (51). The mounting plate (53) is fixedly connected to the upper end of the hydraulic presses (52).

5. The hoisting device for coal mining according to claim 4, characterized in that: The buffer and shock absorption unit (5) also includes a damping rod (54) and a buffer plate (55). Multiple damping rods (54) are fixedly connected to the upper part of the mounting plate (53), and the buffer plate (55) is fixedly connected to the upper end of the damping rod (54).

6. The hoisting device for coal mining according to claim 1, characterized in that: It also includes a limiting plate (6) and an adjusting plate (7). Two adjusting plates (7) are fixedly connected to the left and right sides of the upper middle part of the base plate (1), and a limiting plate (6) is fixedly connected to the upper rear middle part of the base plate (1).

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