Three-degree-of-freedom supporting unloading platform

Abstract

The invention relates to the technical field of underground coal mine working faces and crossheading transportation equipment, in particular to a three-degree-of-freedom supporting unloading platform which is characterized in that the three-degree-of-freedom supporting unloading platform is directly connected with a working face end unloading type scraper conveyor head and a crossheading reversed loader tail; freedom degrees in three directions are provided for unloading of coal of a working face scraper conveyor to a crossheading reversed loader. The device mainly comprises an upper hinge seat, a rotary hinge seat, a supporting seat, a base, a hydraulic lifting system and the like. The upper hinge seat is connected with a headstock of the end-dump conveyor; the rotary hinge seat is hinged with the upper hinge seat through a pin shaft; the rotary hinge seat and the supporting seat rotate through the rotary slide way; and the supporting seat is connected with the base through a mandrel limiting and hydraulic lifting system. By means of the structure, unloading points can be rigidly fixed, freedom degrees in three directions are provided for the unloading points, the adaptability of equipment to irregular working faces is improved, mining of corner working faces is increased, the coal mining rate of the working faces is increased, and waste of coal resources is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underground working face and crossheading transportation equipment, in particular to a three-degree-of-freedom supporting unloading platform. BACKGROUND

[0002] With the continuous progress of coal mining technology, higher requirements are put forward for the function of coal mining equipment. The longwall retreat mining process is generally used in the coal mining face, and the coal is unloaded to the tail of the crossheading transfer machine by the scraper conveyor, and then is unloaded to the tail of the belt self-moving machine after passing through the tail of the crossheading transfer machine, a crusher and the main body of the transfer machine, and finally is transported to the ground by the belt conveyor. According to the actual use of the coal mine and the classification of the equipment in the working face, the unloading mode of the coal from the scraper conveyor in the working face to the crossheading transfer machine is divided into two types of crosswise side unloading and end unloading. The crosswise side unloading is suitable for high-yield and high-efficiency working faces, and the head of the working face conveyor and the tail of the crossheading transfer machine are fixed as a rigid body, which has high requirements for the flatness of the roadway. In actual coal mining, the end unloading mode of the working face scraper conveyor and the crossheading transfer machine is mostly used.

[0003] In the end unloading mode, in one case, the crossheading roadway is not bedded relative to the working face, that is, the bottom surface of the crossheading roadway and the end face bottom plate of the working face are at the same height. In this case, the unloading mode of the end unloading is that the head of the working face scraper conveyor is directly overlapped on the unloading chute of the transfer machine tail. With the advancement of the working face mining, the distance between the head of the conveyor and the tail of the transfer machine will decrease or increase, which will result in that the unloading of the coal from the working face scraper conveyor to the transfer machine cannot achieve the ideal effect. In another case, the crossheading roadway is bedded relative to the working face, that is, the bottom surface of the crossheading roadway is lower than the end face bottom plate of the working face. In this case, the unloading mode of the end unloading is also that the head of the working face scraper conveyor is overlapped on the unloading chute of the transfer machine tail, and according to the working face condition, the adjusting pad under the head of the scraper conveyor is increased to adapt to the bedding amount of the crossheading relative to the working face. No matter which of the above cases, the position of the working face scraper conveyor and the crossheading transfer machine cannot be fixed relative to each other, and the angle of the working face scraper conveyor and the crossheading transfer machine cannot be adjusted. For the mining equipment of the special-shaped working face and the corner working face, the ideal mining effect cannot be achieved.

[0004] Therefore, how to effectively mine the coal in the special-shaped working face and the corner working face, improve the coal mining rate of the working face and reduce the waste of coal resources is a technical problem to be solved. SUMMARY

[0005] To address the aforementioned problems, this invention provides a three-degree-of-freedom support and unloading platform. The upper hinge seat is connected to the scraper conveyor head frame via a positioning pin and secured with bolts. The upper hinge seat and the rotating hinge seat are hinged together by a pin shaft. The rotating hinge seat and the support seat are limited by a positioning sleeve. Rotation is achieved via a rotating slide rail. The support seat and the base are limited by a mandrel and a positioning sleeve. A hydraulic cylinder is connected in the hydraulic lifting system. The lifting of the hydraulic cylinder is controlled by operating a hydraulically controlled self-locking valve group, realizing the lifting of the support seat and the base. A connecting lug in the base connects to the tail of the transfer conveyor. This achieves a rigid connection between the scraper conveyor head and the transfer conveyor tail while enabling three-degree-of-freedom relative motion between them. This invention can effectively mine irregularly shaped and corner working faces, increasing the coal mining rate and reducing coal resource waste.

[0006] The technical solution adopted by this invention to solve its technical problem is: A three-degree-of-freedom support unloading platform is characterized in that the upper hinge seat is directly connected to the head frame of the scraper conveyor, and the upper hinge seat and the rotating hinge seat are hinged by a pin to realize the vertical rotation of the scraper conveyor head relative to the chute; the rotating hinge seat is positioned by a positioning sleeve and can rotate relative to the rotating track, realizing rotation in the horizontal plane; the support seat is limited by a spindle on the base, and the lifting of the support seat relative to the base is realized by a hydraulic cylinder controlled by a hydraulically controlled self-locking operating valve group; the base is fixed to the tail of the transfer machine by double pins to realize the rigid fixation of the transfer machine and the scraper conveyor, while realizing relative movement in three directions.

[0007] The beneficial effects of this invention are: 1. Solve the problem of inconsistent relative positions between the scraper conveyor head and the transfer conveyor tail in the underground unloading method of coal mines, so as to ensure the coal unloading effect and reduce the waste of coal spillage.

[0008] 2. The rigid connection between the conveyor head and the transfer machine tail allows for three-degree-of-freedom movement between them, increasing the equipment's ability to mine irregular and corner working faces while ensuring unloading efficiency.

[0009] 3. It provides a new design concept and equipment development direction for the design of underground coal mine roadway equipment. Attached Figure Description

[0010] Figure 1 This is a diagram of a three-degree-of-freedom support unloading platform; Figure 2 A diagram of a hinged seat on a three-degree-of-freedom support unloading platform; Figure 3 A diagram of a rotary hinge seat for a three-degree-of-freedom supported unloading platform; Figure 4 This is a diagram of a support base for a three-degree-of-freedom unloading platform. Figure 5 is a three-degree-of-freedom support unloading platform base diagram; Figure 6 is a three-degree-of-freedom support unloading platform hydraulic lifting system schematic diagram; Figure 7 is a three-degree-of-freedom support unloading platform coal cleaning shovel diagram; Figure 8 is a three-degree-of-freedom support unloading platform push beam diagram; Figure 9 is a three-degree-of-freedom support unloading platform push seat diagram.

[0011] In the figure: 1, upper articulated seat; 2, rotating articulated seat, 3, support seat, 4, base, 5, coal cleaning shovel, 6, hydraulic lifting system, 7, push beam, 8, push seat. DETAILED DESCRIPTION

[0012] The application will be further described below in combination with the accompanying drawings and implementation examples.

[0013] When the coal mining face equipment and crossheading equipment in the coal mine are installed, the platform is installed.

[0014] For example Figure 1As shown, it is the front view of the equipment platform, the figure No. 1 is the upper hinge seat, which is connected with the end discharge conveyor head as a rigid body through pin shaft positioning and bolt fastening. The upper hinge seat (1) is hinged with the rotating hinge seat (2) in the figure through the pin shaft, and the upper hinge seat (1) and the rotating hinge seat (2) can rotate in the vertical plane through the pin shaft. The rotating hinge seat (2) and the support seat (3) in the figure are limited by the positioning sleeve (35), can rotate in the circular ring rotating track (34), and can realize the rotation of the rotating hinge seat (2) around the support seat (3) in the horizontal plane. The support seat (3) and the base (4) in the figure are limited by the vertical sliding ear (45), and the vertical lifting movement between them is realized through the oil cylinder (63) in the hydraulic lifting system (6). The base (4) is provided with a connecting ear (47) and a stepped pushing bottom plate (42) on the side of the transfer machine, the stepped pushing bottom plate (42) is nested with the tail plate of the transfer machine, is fixed through the connecting ear (47) and the pin shaft, and can be rigidly connected with the three-degree-of-freedom supporting and unloading platform and the tail of the transfer machine. The figure No. 5 is a coal cleaning shovel, with the advancement of the coal mining working face, the three-degree-of-freedom supporting and unloading platform advances forward together with the equipment, and the function of the coal cleaning shovel (5) is to push away the floating coal in the roadway in front of the equipment. The figure No. 6 is a hydraulic lifting system, the oil cylinder (63) in the hydraulic lifting system (6) is limited through the pin shaft and is fixed on the base (4), and the lifting of the support seat (3) is realized through the upward lifting of the piston rod to lift the horizontal plate (37), so that the lifting of the conveyor head relative to the roadway bottom plate is realized. The pushing beam (7) in the figure is symmetrically arranged with the coal cleaning shovel (5) and is connected with the base (4) through the double pin shafts in the vertical direction. The figure No. 8 is a pushing seat, one end of the pushing seat is connected with the end frame in the roadway, and the other end is connected with the pushing beam (7) through the double pin shafts in the horizontal plane, and the overall forward movement of the three-degree-of-freedom supporting and unloading platform is realized through the pushing of the end frame in the crossheading roadway.

[0015] In summary, the three-degree-of-freedom supporting and unloading platform can not only be rigidly connected with the tail of the crossheading transfer machine and the conveyor head of the working face, but also can realize the rotation, lifting and rotation in the horizontal plane of the conveyor head of the working face and the tail of the crossheading transfer machine in the vertical direction, so that the three degrees of freedom of the conveyor head of the working face relative to the crossheading transfer machine are realized. Through the use of the three-degree-of-freedom supporting and unloading platform, the crossheading equipment can advance together with the working face equipment in the process of underground mining, the coal mining efficiency is improved, the rigid fixed lifting and rotating unloading of the conveyor of the working face relative to the crossheading transfer machine is realized, the coal scattering in the unloading process is reduced, and the stable mining of the special-shaped working face is realized.

[0016] It should be understood that the technical solutions of the present application described above by means of examples are illustrative rather than restrictive. Based on the description of the present application, those skilled in the art can modify the technical solutions recorded in the examples, or make equivalent substitutions for part of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A three-degree-of-freedom support unloading platform, characterized in that: A three-degree-of-freedom support unloading platform mainly includes: an upper hinge seat (1), a rotary hinge seat (2), a support seat (3), a base (4), a coal cleaning shovel (5), a hydraulic lifting system (6), a pushing beam (7), and a pushing seat (8); the upper hinge seat (1) is a welded part, symmetrical on the left and right, including a connecting ear (11), a top plate (12), a positioning pin (13), and a hole A on the connecting ear (11); the rotary hinge seat (2) is a welded part, symmetrical on the left and right, including an ear plate (21), a bottom plate (22), and a support bar (23), and a hole B on the ear plate (21); the support seat (3) is a welded part, symmetrical on the left and right, including a bottom plate (31), a vertical plate (32), a stiffening plate (33), a rotary slide (34), a positioning sleeve (35), a limiting plate (36), and a horizontal plate. (37); The base (4) is a welded part, symmetrical on the left and right, including connecting ear (41), stepped base plate (42), fixing plate (43), limiting plate (44), sliding ear (45), mandrel (46), connecting ear (47); The coal cleaning shovel (5) is a welded part, symmetrical on the left and right, including connecting ear (51), vertical plate (52), horizontal plate (53), coal cleaning plate (54); The hydraulic lifting system (6) includes hydraulic self-locking operating valve group (61), two-way lock (62), hydraulic cylinder (63); The pushing beam (7) is a welded part, symmetrical on the left and right, including base plate (71), connecting ear (72), pushing plate (73); The pushing seat (8) is a welded part, including base plate (81), vertical plate (82), top plate (83), pushing ear (84).

2. The three-degree-of-freedom support unloading platform according to claim 1, characterized in that, The upper hinge seat (1) is connected to the head frame of the end-discharge working face conveyor. It is limited by the positioning pin (13) and the bolt is fastened to the base of the head frame. The hinge hole A on the connecting ear (11) is hinged to the hole B set on the ear plate (21) in the rotating hinge seat (2), so that the conveyor head can be rigidly fixed relative to the three-degree-of-freedom support platform while rotating in the vertical plane. The bottom plate (22) in the rotating hinge seat (2) is limited by the rotating slide (34) in the support seat (3), so that the rotating hinge seat (2) can rotate relative to the support seat (3) around the positioning sleeve (35) in the horizontal plane. The positioning sleeve (35) in the support seat (3) is fitted on the spindle (46) of the base (4), and the horizontal plate (37) is pushed out by the piston rod of the hydraulic cylinder in the hydraulic lifting system, so that the support seat can be realized. (3) The hydraulic cylinder piston rod retracts and descends by gravity after the relative upward movement of the base (4); the two vertical plates (32) are welded together by the stiffening plate (33) and fitted on the sliding ear (45) as the track for sliding up and down. The vertical plate (32) and the sliding ear (45) are provided with staggered limit holes, which can realize the limit after lifting and lowering at different heights; the connecting ear (47) can be connected to the tail of the transfer machine to realize the rigid connection between the three-degree-of-freedom support unloading platform and the transfer machine; the base (4) is equipped with a coal cleaning shovel (5) on one side and a push beam (7) and push seat (8) on the other side to connect with the support. When the support is pushed, the three-degree-of-freedom support unloading platform can be pushed synchronously; the above connection provides three degrees of freedom for the unloading of coal from the working face conveyor to the roadway transfer machine.

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