Tunneling device for air return crossheading of scraper conveyor

Abstract

The tunneling device is characterized in that two upper connecting pieces are arranged on one side of the upper portion of the tail of the scraper conveyor, and two lower connecting pieces are arranged on the lower portion of the tail of the scraper conveyor; linkage arms are hinged to the two ends of a center shaft of the spiral roller respectively, and the other ends of the two linkage arms are hinged to the upper connecting pieces respectively; the outer sides of the middles of the two linkage arms are hinged to the upper ends of hydraulic oil cylinders correspondingly, and bases of the two hydraulic oil cylinders are hinged to lower connecting pieces correspondingly. A hydraulic oil cylinder and a spiral roller are designed and installed, the swing amplitude of a linkage arm is controlled through stretching and retracting of the hydraulic oil cylinder, and therefore the position of the spiral roller is adjusted. The unique spiral structure of the spiral roller can convey materials into a working face, and the materials are picked up to a conveyor through the coal mining machine roller. The device is simple in overall structure, convenient to operate and capable of meeting different dinting excavation requirements.

Description

Technical Field

[0001] This utility model belongs to the technical field of mining equipment, specifically relating to a tunneling device for the return air roadway of a scraper conveyor. Background Technology

[0002] In fully mechanized longwall mining in coal mines, the return airway floor often needs to be cleaned when equipment such as the tail and end supports of scraper conveyors are moved forward. Due to floor deformation or the impact of roadway excavation, extensive floor excavation is required to ensure the normal movement of equipment within the return airway. This excavation work is enormous, and the resulting waste rock has nowhere to be transported; excessive accumulation can severely hinder the overall progress of coal mining. Therefore, there is an urgent need to develop equipment capable of mechanized and automated floor excavation and proper transportation of waste rock to ensure the cleanliness and unobstructed flow of the return airway. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tunneling device for the return air roadway of a scraper conveyor, thereby achieving effective mining and cleaning of the bottom plate of the return air roadway and improving the efficiency of coal mining.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tunneling device for a return air roadway of a scraper conveyor, comprising a scraper conveyor tail section, characterized in that: two upper connecting parts are provided on one side of the upper part of the scraper conveyor tail section, and two lower connecting parts are provided on one side of the lower part; connecting arms are respectively hinged to both ends of the central shaft of the spiral drum, and the other ends of the two connecting arms are respectively hinged to the upper connecting parts; piston rods at the upper end of hydraulic cylinders are respectively hinged to the outer sides of the middle of the two connecting arms, and the bases of the two hydraulic cylinders are respectively hinged to the lower connecting parts; the connecting arms have a certain bending angle, and the working height of the spiral drum is adjusted by the hydraulic cylinders.

[0005] The bending angle of the connecting arm is 140-160 degrees.

[0006] A hydraulic motor for driving the rotation of the spiral drum is vertically mounted at one end of the central shaft.

[0007] The two hydraulic cylinders work synchronously.

[0008] The surface of the spiral roller is provided with several spirally distributed cutting teeth.

[0009] The beneficial effects of this utility model are as follows: A hydraulic cylinder and a spiral drum are designed and installed. The extension and retraction of the hydraulic cylinder controls the swing amplitude of the connecting arm, thereby adjusting the position of the spiral drum. The unique spiral structure of the spiral drum transports materials to the working face, where they are picked up by the coal mining machine drum and transferred to the conveyor. The device has a simple overall structure, is easy to operate, and meets different underground mining needs. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 is the front view of the utility model;

[0011] Fig. 2 is the partial plan view of the utility model;

[0012] In the figure: 1 - scraper conveyor tail, 2 - upper connecting piece, 3 - linkage arm, 4 - spiral roller, 5 - hydraulic motor, 6 - hydraulic cylinder, 7 - lower connecting piece. DETAILED DESCRIPTION

[0013] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.

[0014] See Figs. 1-2 A kind of tunneling device for the return air channel of scraper conveyor, including scraper conveyor tail 1, it is characterized in that: two upper connecting pieces 2 are equipped in the upper part one side of the scraper conveyor tail 1, two lower connecting pieces 7 are equipped in the lower part one side;The center axis of spiral roller 4 is respectively hinged to linkage arm 3, the other end of two linkage arms 3 is respectively hinged to upper connecting piece 2;The middle outer side of two linkage arms 3 is respectively hinged to the piston rod of the upper end of hydraulic cylinder 6, the base of two hydraulic cylinders 6 is respectively hinged to lower connecting piece 7;The bending angle of linkage arm 3 is 140-160 degrees, and linkage arm 3 controls and adjusts the working height of spiral roller 4 by hydraulic cylinder 6.Two hydraulic cylinders 6 work synchronously.

[0015] One end of the center axis of spiral roller 4 is vertically installed hydraulic motor 5 for driving its rotation.The surface of spiral roller 4 is equipped with several cutting teeth in spiral distribution.

Claims

1. A tunneling device for a scraper conveyor return air roadway, comprising the tail section of the scraper conveyor (1), characterized in that: The scraper conveyor tail (1) has two upper connecting parts (2) on one side and two lower connecting parts (7) on one side. The two ends of the central shaft of the spiral drum (4) are respectively hinged to the connecting arms (3), and the other ends of the two connecting arms (3) are respectively hinged to the upper connecting parts (2). The piston rods of the upper end of the hydraulic cylinders (6) are respectively hinged to the outer side of the middle of the two connecting arms (3), and the bases of the two hydraulic cylinders (6) are respectively hinged to the lower connecting parts (7). The connecting arms (3) have a certain bending angle, and the connecting arms (3) are controlled by the hydraulic cylinders (6) to adjust the working height of the spiral drum (4).

2. The tunneling device for a scraper conveyor return air roadway as described in claim 1, characterized in that: The bending angle of the connecting arm (3) is 140-160 degrees.

3. The tunneling device for a scraper conveyor return air roadway as described in claim 1, characterized in that: The spiral drum (4) has a hydraulic motor (5) mounted vertically at one end of its central shaft to drive its rotation.

4. A tunneling device for a scraper conveyor return air roadway as described in claim 1, characterized in that: The two hydraulic cylinders (6) work synchronously.

5. A tunneling device for a scraper conveyor return air roadway as described in any one of claims 1-4, characterized in that: The surface of the spiral roller (4) is provided with several spirally distributed cutting teeth.

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