Belt conveyor coal blockage protection device

Abstract

The utility model belongs to the technical field of belt conveyor protection devices, and particularly relates to a belt conveyor coal blockage protection device which comprises a collecting hopper and a supporting frame, the collecting hopper is located above the supporting frame, a height fine adjustment mechanism is arranged on the supporting frame, and the supporting frame is in contact with the collecting hopper through the height fine adjustment mechanism to support the collecting hopper. The height fine adjustment mechanism can perform fine adjustment on the height; an opening is formed in the bottom of the collecting hopper, a pair of baffles capable of being opened and closed is arranged at the lower end of the collecting hopper, and the opening can be blocked after the two baffles are closed. By arranging the supporting frame, the collecting hopper can be supported, and the situation that the pull switch is continuously pulled by the collecting hopper after being triggered is avoided. And the baffle capable of being opened and closed is arranged, the collecting hopper does not need to be taken out, the fallen coal in the collecting hopper can be poured out only by opening the baffle, and the fallen coal in the collecting hopper is convenient to clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt conveyor protection devices, and in particular relates to a belt conveyor coal blocking protection device. Background Art

[0002] The coal for the unit is mainly delivered to the coal yard by car, with an annual coal consumption of 4 million tons. The coal transportation system from the coal unloading device to the raw coal bunker in the boiler room is a fixed belt conveyor. Due to the geographical location, most of the incoming coal is washed mixed coal, resulting in a lot of sticky coal in the coal buckets of each belt, causing frequent coal blockage in the coal transportation system, greatly affecting the safe operation of the coal transportation system and unable to guarantee the coal supply of the unit. Although a coal blocking protection device is designed in the coal bucket, it cannot play a protective role due to the influence of the on-site environment.

[0003] Once the system is blocked by coal, if it is not discovered in time, it will have a great impact on the system, with a minimum of 5-6 tons of coal blocked, and a maximum of 20-30 tons, and even the belt will slip, smoke and catch fire. This will increase manpower and material resources, and pose a great threat to the safe operation of the equipment. In order to avoid losses to the company caused by equipment accidents and reduce the investment of manpower and material resources, reducing the amount of coal blockage has become an urgent issue.

[0004] The patent application number is 202120845001.1. The disclosed belt conveyor coal blockage protection device includes: a lower coal bucket main body for loading; a material storage box to provide kinetic energy to the protection device; a conveyor pull-wire switch to control the conveyor to stop; by designing the material storage box, the conveyor can be automatically shut down when coal overflows.

[0005] Although the above protection device can automatically shut down the conveyor when coal overflows, it relies on the material storage box to increase the gravity of the falling coal to drive the pull rope switch to operate. However, after the operation, since the material storage box is suspended in the air, it will continue to generate tension on the pull rope, affecting the service life of the pull rope.

[0006] The fallen coal in the material storage box needs to be dumped, but the above structure requires that the suspended material storage box be removed before dumping, and then dumped; after dumping, the material storage box needs to be hung again. Therefore, there is a certain inconvenience in the use process. Utility Model Content

[0007] The utility model provides a belt conveyor coal blocking protection device, which can support the collecting bucket to prevent the pull rope from being subjected to tension for a long time and facilitates pouring out the fallen coal in the collecting bucket.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A coal blockage protection device for a belt conveyor comprises a collecting bucket and a support frame, wherein the collecting bucket is located above the support frame, and a height fine-adjustment mechanism is provided on the support frame, which contacts the collecting bucket through the height fine-adjustment mechanism to support the collecting bucket; the height fine-adjustment mechanism can perform height fine-adjustment; an opening is provided at the bottom of the collecting bucket, and a pair of openable and closable baffles are provided at the lower end of the collecting bucket, and the opening can be sealed when the two baffles are closed.

[0010] The support frame includes a fixed plate and a pair of tripods, the pair of tripods are fixedly connected to the fixed plate, and there is a gap between the pair of tripods;

[0011] Each tripod is provided with a height fine-adjusting mechanism, which includes a sliding square sleeve and a driving mechanism. The sliding square sleeve is slidably connected to the tripod; the driving mechanism is arranged on the tripod, and the sliding square sleeve can be driven to move by the driving mechanism.

[0012] The driving mechanism includes a sliding bar and a first wedge block. The sliding bar is slidably connected to the tripod and is located in a sliding square sleeve. The first wedge block is fixedly connected to the sliding bar. A second wedge block that cooperates with the first wedge block is provided in the sliding square sleeve. An adjusting screw is threadedly connected to the tripod, and the end of the adjusting screw is rotatably connected to the sliding bar.

[0013] The two baffles are both hinged to the collecting bucket; the two baffles are fixedly connected with mutually meshing gears; a reset spring is arranged between the two baffles; a driving member is arranged at the support frame, and the two baffles are driven to open by the driving member.

[0014] The driving member is a rack, which is slidably connected with the sliding square sleeve; a gear on one of the baffles is meshed with the rack.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The collection bucket can be supported by setting a support frame to prevent the collection bucket from being pulled continuously after the pull-wire switch is triggered. An openable and closable baffle is provided, and the coal in the collection bucket can be poured out by opening the baffle without taking out the collection bucket, which is convenient for cleaning the coal in the collection bucket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the use state of the utility model;

[0018] Figure 2 It is a structural schematic diagram of one direction of the utility model;

[0019] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0020] Figure 4 It is a structural schematic diagram of the utility model in another direction;

[0021] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0022] Figure 6 It is a cross-sectional view of the height fine-tuning mechanism of the utility model;

[0023] Figure 7 yes Figure 6 A partial enlarged view of point C in the middle;

[0024] Among them: 1 is a collecting bucket, 2 is a supporting frame, 3 is a height fine-adjusting mechanism, 4 is a pulley, 5 is a baffle, 6 is a fixing plate, 7 is a tripod, 8 is a sliding square sleeve, 9 is a sliding bar, 10 is a first wedge block, 11 is a second wedge block, 12 is an adjusting screw, 13 is a gear, 14 is a driving member, 15 is a return spring, and 16 is a guide column. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present utility model are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0026] like Figure 1-7 As shown, a belt conveyor coal blocking protection device includes a collecting bucket 1 and a supporting frame 2, and the collecting bucket 1 is located above the supporting frame 2.

[0027] During installation, the collecting bucket 1 is installed at the inspection hole of the coal chute; the support frame 2 is fixed below the inspection hole. The pull-wire switch is extended to the inspection hole of the coal chute, and the pulley 4 is installed on the upper part of the inspection hole. The pull-wire passes through the pulley 4 to connect the collecting bucket 1. When the incoming coal overflows from the coal chute, it will flow into the collection. When the coal accumulation in the collecting bucket 1 reaches the pull-wire tension value (the collecting bucket 1 moves down), the pull-wire is activated, and the belt is jumped, thereby playing a protective role. At the same time, when the collecting bucket 1 moves down and the pull-wire action is triggered, the collecting bucket 1 contacts the upper surface of the support frame 2, that is, the collecting bucket 1 is supported by the support frame 2. Avoid continuous pulling by the collecting bucket 1 after the pull-wire action.

[0028] A height fine-adjustment mechanism 3 is provided above the support frame 2; after installation, the height of the upper surface of the support frame 2 can be adjusted by the fine-adjustment structure to ensure that after the collecting bucket 1 is supported by the support frame 2, the pull wire is driven to move.

[0029] An opening is provided at the bottom of the collecting bucket 1, and a pair of openable and closable baffles 5 are provided at the lower end of the collecting bucket 1. When the two baffles 5 are closed, the opening can be blocked. When dumping is required, only a plastic bucket or other container needs to be placed under the collecting bucket 1, and then the baffle 5 is opened to allow the coal in the collecting bucket 1 to be discharged into the plastic bucket through the opening. The coal in the plastic bucket can be dumped. The above operation process does not require the collection bucket 1 to be removed and then reinstalled, thereby improving the convenience of operation.

[0030] Furthermore, the above-mentioned support frame 2 includes a fixing plate 6 and a pair of tripods 7. The pair of tripods 7 are fixedly connected to the fixing plate 6, and there is a gap between the pair of tripods 7. The fixing plate 6 can be fixed below the inspection hole by expansion bolts or the like, and a corresponding connecting through hole is provided on the fixing plate 6.

[0031] A height fine-adjustment mechanism 3 is provided on each tripod 7, and the height fine-adjustment mechanism 3 includes a sliding square sleeve 8 and a driving mechanism. The sliding square sleeve 8 is slidably connected to the tripod 7; the driving mechanism is arranged on the tripod 7, and the sliding square sleeve 8 can be driven to move by the driving mechanism, thereby changing the height of the sliding square sleeve 8.

[0032] Furthermore, the driving mechanism includes a sliding bar 9 and a first wedge block 10. The sliding bar 9 is slidably connected to the tripod 7 and is located in the sliding square sleeve 8. The first wedge block 10 is fixedly connected to the sliding bar 9. The sliding square sleeve 8 is provided with a second wedge block 11 that cooperates with the first wedge block 10. The tripod 7 is threadedly connected with an adjusting screw 12, and the end of the adjusting screw 12 is rotatably connected to the sliding bar 9. By rotating the adjusting screw 12, the sliding bar 9 is pushed forward. During the forward movement of the sliding bar 9, the first wedge block 10 gradually contacts the second wedge block 11, thereby gradually lifting the sliding square sleeve 8 to increase its height. On the contrary, when the adjusting screw 12 is rotated in the opposite direction, the sliding bar 9 is pushed backward. During the backward movement of the sliding bar 9, the first wedge block 10 deviates from the second wedge block 11, and the sliding square sleeve 8 moves downward under the action of gravity to reduce its height.

[0033] By adjusting the height of the sliding square sleeve 8, it is ensured that the pull wire is pulled after the collecting bucket 1 contacts the sliding square sleeve 8.

[0034] Furthermore, the above-mentioned two baffles 5 are hinged to the collecting bucket 1; the two baffles 5 are fixedly connected with mutually meshing gears 13; a reset spring 15 is provided between the two baffles 5; a driving member 14 is provided at the support frame 2, and the two baffles 5 are driven to open by the driving member 14, and the fallen coal in the collecting bucket 1 can be discharged after opening.

[0035] Furthermore, the driving member 14 is a rack, which is slidably connected to the sliding square sleeve 8; a gear 13 on one of the baffles 5 is meshed with the rack. Specifically: a handle can be provided on the rack to facilitate the movement of the rack.

[0036] When the collecting bucket 1 contacts the sliding square sleeve 8, it is necessary to discharge the coal in the collecting bucket 1; by pushing the rack upward, the rack is meshed with the gear 13, so that the two baffles 5 rotate and open, and the coal is discharged through the opening and falls into the plastic bucket. When the discharge is completed, by pulling the rack downward, the rack is meshed with the gear 13, so that the two baffles 5 rotate in the opposite direction and close.

[0037] Furthermore, in order to prevent the collecting bucket 1 from deflecting when it moves downward, a guide post 16 may be provided between the collecting bucket 1 and the fixing plate 6; the guide post 16 is fixedly connected to the fixing plate 6, and the collecting bucket 1 is slidably connected to the guide post 16. Preferably, two guide posts 16 are provided.

[0038] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A belt conveyor coal blocking protection device, characterized in that: The invention comprises a collecting bucket (1) and a supporting frame (2), wherein the collecting bucket (1) is located above the supporting frame (2), and a height fine-adjusting mechanism (3) is provided on the supporting frame (2), and the height fine-adjusting mechanism (3) contacts the collecting bucket (1) to support the collecting bucket (1); the height fine-adjusting mechanism (3) can be used to fine-adjust the height; an opening is provided at the bottom of the collecting bucket (1), and a pair of openable and closable baffles (5) are provided at the lower end of the collecting bucket (1), and the two baffles (5) can seal the opening when closed.

2. A belt conveyor coal blocking protection device according to claim 1, characterized in that: The support frame (2) comprises a fixing plate (6) and a pair of tripods (7), the pair of tripods (7) are both fixedly connected to the fixing plate (6), and there is a gap between the pair of tripods (7); Each tripod (7) is provided with a height fine-adjustment mechanism (3), the height fine-adjustment mechanism (3) comprising a sliding square sleeve (8) and a driving mechanism, the sliding square sleeve (8) being slidably connected to the tripod (7); the driving mechanism is arranged on the tripod (7), and the sliding square sleeve (8) can be driven to move by the driving mechanism.

3. A belt conveyor coal blocking protection device according to claim 2, characterized in that: The driving mechanism comprises a sliding bar (9) and a first wedge block (10); the sliding bar (9) is slidably connected to the tripod (7) and is located in a sliding square sleeve (8); the first wedge block (10) is fixedly connected to the sliding bar (9); a second wedge block (11) matching with the first wedge block (10) is arranged in the sliding square sleeve (8); an adjusting screw (12) is threadedly connected to the tripod (7); an end of the adjusting screw (12) is rotatably connected to the sliding bar (9).

4. A belt conveyor coal blocking protection device according to claim 2, characterized in that: The two baffles (5) are both hinged to the collecting bucket (1); mutually meshing gears (13) are fixedly connected to the two baffles (5); a return spring (15) is provided between the two baffles (5); and a driving member (14) is provided at the support frame (2), and the two baffles (5) are driven to open by the driving member (14).

5. A belt conveyor coal blocking protection device according to claim 4, characterized in that: The driving member (14) is a rack, which is slidably connected to the sliding square sleeve (8); a gear (13) on one of the baffles (5) is meshed with the rack.

Images