Belt conveyor current-limiting protection device

Abstract

The utility model belongs to the technical field of belt conveyor, concretely relates to a belt conveyor current -limiting protection device, include: the support frame of symmetrical setting in the both sides of belt conveyor, set up the current -limiting plate in the upper belt conveyor belt of belt conveyor, the both ends fixed link of current -limiting plate is equipped with a fixed plate after the through -hole of support frame, the outer end of fixed link is screwed with 2 fastening nuts, and the fastening nut of inside is abutted on fixed plate, wherein, the vertical recessed slot of corresponding fixed link is seted up in the middle part of support frame, the utility model discloses through setting up support frame, limiting plate and fastening nut and so on multiple components, can adjust the channel size formed between current -limiting plate bottom current -limiting groove and belt conveyor belt according to actual need, the flow of material in unit time is convenient for adjusting control, can effectively avoid the shutdown accident of belt conveyor appearance over -flow, and the whole device production cost is low, and the actual need is met, has good application prospect.

Description

Technical Field

[0001] This utility model belongs to the field of belt conveyor technology, specifically relating to a belt conveyor current limiting protection device. Background Technology

[0002] When using belt conveyors to transport materials, overload can cause overcurrent in the conveyor's electrical equipment, leading to tripping, conveyor shutdown, and even equipment damage. To address this issue, a current-limiting device can be installed on the belt conveyor to control the amount of material being transported. For example, CN220097718U discloses a coal conveyor belt coal quantity control current-limiting device, which includes a plow blade installed above the conveyor belt. The plow blade spans the conveyor belt and forms a certain angle with the longitudinal direction of the conveyor belt. The plow blade is driven by a drive mechanism for height adjustment. A hopper for receiving waste coal guided outside the conveyor belt is connected to one side of the conveyor belt at the point of contact between the coal flow and the plow blade. The publicly disclosed flow limiting device has a simple structure and reasonable design. By adding a coal flow limiting device in the middle of the coal conveyor belt, it can effectively prevent the occurrence of power plant coal conveyor belt overload, system coal spillage, and coal blockage in the feed chute. It can achieve the goals of stabilizing coal supply, shortening coal supply time, system energy saving, and reducing the labor intensity of cleaning and operation and maintenance personnel. The reliability of coal supply and the level of civilized production in the coal conveying system will be greatly improved.

[0003] Undeniably, the coal conveyor belt coal quantity control and flow limiting device disclosed in this patent can indeed achieve the aforementioned effects, but it still has certain shortcomings: as can be seen from its specification and drawings, it requires two drive mechanisms to drive the plow blades to rise and fall, and the drive mechanisms adopt screw jacks. Although using screw jacks can indeed drive the plow blades to rise and fall, this will increase the manufacturing cost of the device to some extent.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a current limiting protection device for belt conveyors, so as to solve the problem in the prior art where the current limiting device for coal quantity control of coal conveyor belts uses a screw jack to drive the plow blade to rise and fall.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A belt conveyor current limiting protection device includes: Support frames symmetrically arranged on both sides of the belt conveyor; A flow-limiting plate is installed above the conveyor belt of the belt conveyor, the flow-limiting plate spans the conveyor belt of the belt conveyor and forms a certain angle with its longitudinal direction; a fixing plate is sleeved on the fixing rods at both ends of the flow-limiting plate after passing through the support frame; two fastening nuts are threaded to the outer ends of the fixing rods, and the fastening nuts located on the inner side abut against the fixing plate. The support frame has a vertical clearance groove in the middle that corresponds to the fixed rod.

[0007] Preferably, a rectangular limiting block is fixed on the fixing rod, and the side of the limiting block away from the flow limiting plate is attached to the inner side of the support frame; the left and right sides of the support frame are integrally formed with limiting plates corresponding to the limiting blocks; the limiting blocks and the limiting plates are slidably guided together.

[0008] Preferably, the lower end of the flow limiting plate is provided with a concave arc-shaped flow limiting groove.

[0009] Preferably, a wear-resistant liner is fixed on the upper surface of the flow limiting plate near the flow limiting groove.

[0010] Preferably, the flow restrictor spans across the longitudinal direction of the conveyor belt at an angle of 30-45°.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention, through the inclusion of a support frame, a limiting plate, and fastening nuts, allows for adjustment of the channel size between the flow-limiting groove at the bottom of the flow-limiting plate and the conveyor belt, facilitating the regulation and control of material flow per unit time. This effectively prevents conveyor belts from shutting down due to overflow. Furthermore, the entire device is low-cost, meets practical needs, and has promising application prospects. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support frame and flow-limiting plate of this utility model.

[0013] Explanation of key figure labels: 1. Belt conveyor; 2. Support frame; 21. Clearance groove; 22. Limiting plate; 3. Flow limiting plate; 31. Flow limiting groove; 32. Wear-resistant liner; 33. Fixing rod; 34. Limiting block; 4. Fixing plate; 5. Fastening nut. Detailed Implementation

[0014] The technical solution of this utility model patent will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0015] Example See appendix Figure 1-2 A belt conveyor current limiting protection device, comprising: Support frames 2 are symmetrically arranged on both sides of belt conveyor 1; A flow-limiting plate 3 is installed above the conveyor belt of the belt conveyor 1. The flow-limiting plate 3 spans the conveyor belt of the belt conveyor 1 and forms an angle of 30-45° with its longitudinal direction, with 45° being more effective. In this embodiment, a concave arc-shaped flow-limiting groove 31 is provided at the lower end of the flow-limiting plate 3. A wear-resistant liner 32 is fixed on the upper surface of the flow-limiting plate 3 near the flow-limiting groove 31. A fixing plate 4 is sleeved on the fixing rods 33 at both ends of the flow-limiting plate 3 after passing through the support frame. Two fastening nuts 5 are threaded to the outer ends of the fixing rods 33, and the fastening nuts 5 located on the inner side abut against the fixing plate 4. It should be noted that a vertical clearance groove 21 corresponding to the fixing rods 33 is provided in the middle of the support frame 2. The flow-limiting plate 3 and the fixing rods 33 are welded together.

[0016] To make the flow restrictor 3 more secure, a rectangular limiting block 34 is fixed on the fixing rod 33. The side of the limiting block 34 away from the flow restrictor 3 is attached to the inner side of the support frame 2. The left and right sides of the support frame 2 are integrally formed with limiting plates 22 corresponding to the limiting blocks 34. The limiting blocks 34 and the limiting plates 22 are slidably guided together.

[0017] See Figure 1 The material moves from right to left on conveyor belt 1, with the bottom of the flow-limiting plate 3 tilted downwards to the right. During the material conveying process, the material passes through the channel formed between the flow-limiting groove 31 at the bottom of the flow-limiting plate 3 and the conveyor belt of conveyor belt 1. Excess material is intercepted by the flow-limiting plate 3, thus controlling the amount of material passing through per unit time and preventing overflow on conveyor belt 1. Furthermore, the size of the channel can be adjusted according to actual needs. For example, loosening the fastening nut 5 and moving the flow-limiting plate 3 upwards enlarges the channel formed between the flow-limiting groove 31 at the bottom of the flow-limiting plate 3 and the conveyor belt of conveyor belt 1, increasing the flow rate; similarly, moving the flow-limiting plate 3 downwards narrows the channel formed between the flow-limiting groove 31 at the bottom of the flow-limiting plate 3 and the conveyor belt of conveyor belt 1, reducing the flow rate. After adjusting the height of the flow-limiting plate 3, tighten the fastening nut 5 again.

[0018] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A current limiting protection device for a belt conveyor, characterized in that, include: Support frames symmetrically arranged on both sides of the belt conveyor; A flow-limiting plate is installed above the conveyor belt of the belt conveyor, the flow-limiting plate spans the conveyor belt of the belt conveyor and forms a certain angle with its longitudinal direction; a fixing plate is sleeved on the fixing rods at both ends of the flow-limiting plate after passing through the support frame; two fastening nuts are threaded to the outer ends of the fixing rods, and the fastening nuts located on the inner side abut against the fixing plate. The support frame has a vertical clearance groove in the middle that corresponds to the fixed rod.

2. The belt conveyor current limiting protection device according to claim 1, characterized in that, A rectangular limiting block is fixed on the fixed rod, and the side of the limiting block away from the flow limiting plate is attached to the inner side of the support frame; The left and right sides of the support frame are integrally formed with limiting plates corresponding to the limiting blocks; the limiting blocks and the limiting plates are slidably guided together.

3. The belt conveyor current limiting protection device according to claim 1, characterized in that, The lower end of the flow limiting plate has a concave arc-shaped flow limiting groove.

4. The belt conveyor current limiting protection device according to claim 1, characterized in that, A wear-resistant liner is fixed on the upper surface of the flow limiting plate near the flow limiting groove.

5. The belt conveyor current limiting protection device according to claim 1, characterized in that, The flow-limiting plate spans across the longitudinal direction of the conveyor belt at an angle of 30-45°.

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