Multi-point driving scraper conveyor for driving middle groove of upper scraper chain in full-surrounding manner

Abstract

The utility model discloses a multi-point driving scraper conveyor for driving a middle trough of an upper scraper chain in a full-surrounding manner, which comprises a machine head and a machine tail, and at least one middle trough driving device is mounted on the middle trough of the conveyor. The middle groove driving device comprises a driving part and a driving chain wheel, the driving chain wheel is installed on a driving shaft of the driving part, and the driving chain wheel is meshed with the bottom of the upper scraper chain and matched with a main drive of the conveyor to drive the scraper chain to rotate. And a closed cavity for placing the driving chain wheel and the driving shaft is formed in the middle groove below the driving chain wheel. According to the scraper conveyor, the length of the conveyor body can be conveniently increased according to the length requirement of a coal face, and reliable operation can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a scraper conveyor technical field, concretely relates to a kind of multi-point drive scraper conveyors of full-enclosed driving upper scraper chain middle groove. BACKGROUND

[0002] Scraper conveyor is the key equipment of coal flow loading and conveying, and is laid below the coal mining face. At present, the length of fully mechanized coal mining face is generally 200-350 meters, and in order to increase the mining efficiency, the length of working face is usually increased. Due to the increase of the length of working face, the length of the scraper conveyor matched therewith also needs to be adjusted accordingly, for example, the matching power of the whole machine needs to be increased, and the specification of the chain also needs to be increased accordingly. However, the above changes will increase the failure rate of the whole machine and reduce the operation reliability. Restricted by the above problems of the scraper conveyor, when the length of the coal mining face is increased, the number of scraper conveyors is usually increased, the auxiliary roadway is increased, and multiple teams are configured to achieve the increase of the length of the coal mining face. However, this will lead to a large investment in the infrastructure for mining, and thus the overall mining efficiency is not high. Therefore, how to design a scraper conveyor that can increase the conveying length and ensure the operation reliability to adapt to the increasing length of the coal mining face is a technical problem to be solved. SUMMARY

[0003] The utility model aims at providing a kind of multi-point drive scraper conveyors of full-enclosed driving upper scraper chain middle groove, chain drive device is arranged on the conveyor, cooperates with main drive, drives upper scraper chain to run, does not need to increase main drive power, also does not need to increase chain specification, can realize conveying distance increase while ensuring the reliability of operation.

[0004] The utility model discloses the technical scheme is: a kind of multi-point drive scraper conveyors of full-enclosed driving upper scraper chain middle groove, including head and tail, still include at least one middle groove drive device;The middle groove drive device is installed in one section middle groove, including drive part and drive sprocket, the drive sprocket is installed on the drive shaft of the drive part, the drive sprocket is engaged with upper scraper chain;Closed cavity for placing the drive sprocket and the drive shaft is opened in the middle groove below the drive sprocket.

[0005] As a further improvement of the utility model, the engagement of the drive sprocket and the upper scraper chain is higher than the middle plate of the middle groove by a certain distance, so that a certain tension is generated in the engagement of the upper scraper chain.

[0006] As a further improvement of the utility model, the height of the middle groove is greater than the original height of the middle groove on the scraper conveyor, and a transition middle groove is arranged on both sides of the middle groove for the height transition between the middle groove and the original middle groove.

[0007] As a further improvement of the utility model, the closed cavity is composed of the surrounding plate with arc-shaped cross section.

[0008] As a further improvement of the utility model, the driving part is a permanent magnet synchronous motor.

[0009] As a further improvement of the utility model, a torque detection module is arranged in the permanent magnet synchronous motor for detecting motor torque change; the detection module is electrically connected with the control box, and the control box is used for judging the scraper chain breaking condition.

[0010] The utility model has the advantages that according to the different lengths of the scraper conveyor, one or more middle trough driving devices are arranged on the middle trough, the driving device is provided with a driving sprocket on the driving shaft, the driving sprocket is located directly below the upper scraper chain and is engaged with the lower part of the upper scraper chain. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0012] Figure 1 It is the whole structure schematic diagram (divided into three sections) of the multi-point driving scraper conveyor of the full-surrounding type driving upper scraper chain middle trough of the utility model;

[0013] Figure 2 It is Figure 1 the top view of 3;

[0014] Figure 3 It is the side view of 5;

[0015] Figure 4 It is the top view of 5;

[0016] In the figure, 1 is the machine head, 2 is the machine tail, 3 is the middle trough driving device, 301 is the driving part, 302 is the driving sprocket, 303 is the driving shaft, 304 is the surrounding plate, 4 is the upper scraper chain, 5 is the middle trough, 51 is the middle plate, 6 is the transition trough. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0018] like Figures 1-4 As shown, this utility model discloses a multi-point driven scraper conveyor with a fully enclosed drive upper scraper chain and a central trough, comprising a head section 1, a tail section 2, and a central trough drive device 3. The central trough drive device 3 is installed on one of the central trough sections 5. Generally, the middle section of the scraper conveyor (excluding the head and tail sections) consists of a transition trough and multiple central troughs. The central troughs are divided into upper and lower sections by steel plates, and scraper chains are installed inside the troughs. The central troughs form the body of the scraper conveyor, composed of a middle plate and trough steel. The upper trough is used for transporting coal, and the lower trough is used for the return trip of the scraper chain.

[0019] Specifically, the middle trough drive device 3 includes a drive unit 301 and a drive sprocket 302. The drive sprocket 302 is mounted on the drive shaft 303 of the drive unit 301 and meshes with the upper scraper chain 4. In this embodiment, the drive unit 301 is a permanent magnet synchronous motor. A closed cavity is provided in the middle trough 5 below the drive sprocket 302 to house the drive sprocket 302 and the drive shaft 303. This closed cavity is separated from the lower trough to prevent coal from the upper trough from leaking into the lower trough. The closed cavity is composed of a surrounding plate 304 with an arc-shaped cross-section of a certain length.

[0020] In this embodiment, the meshing point between the drive sprocket 302 and the upper scraper chain 4 is a certain distance higher than the middle plate 51 of the middle groove, so that the upper scraper chain 4 generates a certain tension at the meshing point, so that the scraper chain will not jump during operation.

[0021] In this embodiment, the height of the central trough 5 is greater than the original height of the central trough on the scraper conveyor, allowing sufficient height and space for motor installation. Transition central troughs 6 are provided on both sides of the central trough 5 to facilitate a height transition between the central trough 5 and the original central trough. The central trough 5 here is constructed using a box-type structure, consisting of a horizontal plate and vertical plates on both sides, to support the central trough drive device 3. The transition central troughs 6 also employ a similar box-type structure. Compared to the original central trough, this structure is simpler and more practical, reducing manufacturing costs.

[0022] The scraper conveyor of this utility model can freely adjust the length of the conveyor. It is only necessary to increase the number of different central trough drive devices according to the length requirements to form a multi-point arrangement of drive devices.

[0023] The middle trough driving device 3 is engaged with the upper scraper chain 4 by the driving sprocket 302, so that it can be conveniently installed on the middle trough 5 and the device is convenient to overhaul.

[0024] In addition, a torque detection module is arranged in the permanent magnet driving motor, which is used for detecting the torque change of the motor driving shaft. The detection module is electrically connected with a control box (not shown in the figure), and the control box is used for judging the torque data sent by the detection module. If the fluctuation value is less than the threshold value of chain breakage, the control box displays and alarms.

[0025] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range of the technical personnel in the technical field, without departing from the purpose of the utility model, which are all within the protection scope of the utility model claim.

Claims

1. A multi-point driven scraper conveyor with a fully enclosed drive upper scraper chain and a central groove, comprising a head (1) and a tail (2), characterized in that, It also includes at least one central groove drive device (3); the central groove drive device (3) is installed on one of the central grooves (5), including a drive unit (301) and a drive sprocket (302), the drive sprocket (302) is installed on the drive shaft (303) of the drive unit (301), and the drive sprocket (302) meshes with the upper scraper chain (4); a closed cavity for placing the drive sprocket (302) and the drive shaft (303) is provided in the central groove (5) below the drive sprocket (302).

2. The multi-point driven scraper conveyor with a fully enclosed drive upper scraper chain central groove as described in claim 1, characterized in that, The engagement point of the drive sprocket (302) and the upper scraper chain (4) is a certain distance above the middle plate (51) of the middle groove (5), so that the upper scraper chain (4) generates a certain tension at the engagement point.

3. The multi-point driven scraper conveyor with a fully enclosed drive upper scraper chain central groove as described in claim 1, characterized in that, The height of the central trough (5) is greater than the height of the original central trough on the scraper conveyor. Transition central troughs (6) are provided on both sides of the central trough (5) for the height transition between the central trough (5) and the original central trough.

4. The multi-point driven scraper conveyor with a fully enclosed drive upper scraper chain central groove as described in claim 1, characterized in that, The enclosed cavity is formed by an enclosing plate (304) with an arc-shaped cross section.

5. The multi-point driven scraper conveyor with a fully enclosed drive upper scraper chain and a central groove as described in claim 1, characterized in that, The drive unit (301) is a permanent magnet synchronous motor.

6. The multi-point driven scraper conveyor with a fully enclosed drive upper scraper chain central groove as described in claim 5, characterized in that, A torque detection module is installed inside the permanent magnet synchronous motor to detect changes in motor torque; the detection module is electrically connected to the control box, which is used to determine the condition of the scraper chain breakage.

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