Small coal mining machine

Abstract

The utility model provides a small coal mining machine which comprises a machine body, a machine arm, a cutting part, a hydraulic driving device, a walking part, a control assembly, a counterweight module and a hydraulic station, and the machine arm is hinged to the machine body; the cutting part is arranged on the machine arm; the hydraulic driving device is connected with the machine body and the machine arms; the walking part, the control assembly and the counterweight module are arranged on the machine body; the hydraulic station and the machine body are separately arranged; and the cutting part, the hydraulic driving device, the walking part and the control assembly are connected with the hydraulic station through hydraulic pipelines. The full-hydraulic design does not need an onboard power supply, the underground explosion risk is reduced, explosion-proof treatment is not needed, the design is simplified, and the reliability is improved. Secondly, the coal mining machine is small and exquisite in structure and very suitable for narrow mine space, and the operation flexibility is improved. In the aspect of operation, all control can be completed through a hydraulic handle and a knob, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining machines, in particular to a small coal mining machine. Background Art

[0002] Coal mining machines are an indispensable and important equipment in the coal mining process. Traditional coal mining machines usually adopt an electric-hydraulic hybrid drive mode, with power components such as electric motors and hydraulic pumps installed inside the machine body. However, due to the special environment of coal mines, there are flammable and explosive substances such as gas and coal dust. In order to ensure safe production, all electrical equipment such as motors, pumps, and motors in coal mining machines must be explosion-proof. This explosion-proof requirement greatly increases the manufacturing cost of coal mining machines, and also makes the equipment structure more complicated, which is not conducive to maintenance and troubleshooting.

[0003] In addition, due to the large number of built-in power components, the traditional coal mining machine is large in size and heavy in weight, which is not suitable for flexible operation in the narrow space of the mine. Especially for some small mines or thin coal seam mining, the size and weight of conventional coal mining machines often become the main factors limiting their application.

[0004] On the other hand, the control system of the coal mining machine is usually more complicated and requires professional operators to operate, which limits the efficiency of the equipment to a certain extent. At the same time, the complex electrical control system also increases the possibility of equipment failure, affecting the continuity and stability of coal mining operations.

[0005] Therefore, the coal mining industry urgently needs a coal mining machine with simple structure, small size, light weight, easy operation and high safety. This coal mining machine should be able to avoid complex explosion-proof design, reduce manufacturing and maintenance costs, and ensure flexible operation capabilities in a small space. In addition, the new coal mining machine should also have a simple and intuitive operation method to improve operating efficiency and safety.

[0006] In this context, developing a new coal mining machine design to address the shortcomings of traditional coal mining machines in terms of safety, applicability, and economy has become an important research direction in the current field of coal mining equipment. Utility Model Content

[0007] The purpose of the utility model is to provide a small coal mining machine to solve the problems of large structure volume, many faults and the need for electrical explosion-proof treatment of existing coal mining machines.

[0008] To achieve the above purpose, the technical solution adopted by the utility model is to provide a small coal mining machine, including: a machine body, a machine arm, a cutting part, a hydraulic drive device, a walking part, a control component, a counterweight module and a hydraulic station.

[0009] The arm is hinged to the fuselage; the cutting part is arranged on the arm; the hydraulic drive device connects the fuselage and the arm; the walking part, the control component and the counterweight module are arranged on the fuselage; the hydraulic station is separated from the fuselage; the cutting part, the hydraulic drive device, the walking part and the control component are connected to the hydraulic station through a hydraulic pipeline.

[0010] In some possible embodiments, the first end of the arm is hinged to a side surface of the fuselage, the cutting part is arranged at the second end of the arm, the cutting part includes a cutting drum and a cutting hydraulic motor, and the cutting hydraulic motor is used to drive the cutting drum to rotate.

[0011] In some possible embodiments, the hydraulic drive device is configured as a hydraulic cylinder, one end of which is hinged to the fuselage, and the other end is hinged to the middle part of the arm, so as to control the swing of the arm.

[0012] In some possible embodiments, the walking part is arranged in the shell of the fuselage, and includes a walking hydraulic motor, a reducer and a walking wheel assembly. The output shaft of the walking hydraulic motor is connected to the input shaft of the reducer; the output shaft of the reducer is connected to the walking wheel assembly, and the walking wheel assembly is engaged with the rack of the scraper to drive the coal mining machine to move.

[0013] In some possible embodiments, the control component includes a multi-way reversing valve group, and the multi-way reversing valve group includes:

[0014] A cutting control reversing valve is used to control the action of the cutting part;

[0015] The arm control reversing valve is used to control the action of the hydraulic drive device;

[0016] Travel control reversing valve, used to control the movement of the travel part;

[0017] Each reversing valve is connected to an operating element, and the operating element includes a handle and / or a button;

[0018] The multi-way reversing valve group is connected to the hydraulic station through a hydraulic pipeline, and is used to control the flow direction of the hydraulic oil to achieve control of each actuator.

[0019] In some possible embodiments, the counterweight module includes a front counterweight module and a rear counterweight module, which are respectively arranged at the front and rear ends of the machine body to balance the weight distribution of the coal mining machine.

[0020] Beneficial effects of the utility model:

[0021] The fully hydraulic design does not require an onboard power supply, which reduces the risk of underground explosions and does not require explosion-proof treatment, which simplifies the design and improves reliability. Secondly, the coal mining machine has a compact structure, which is very suitable for small mine spaces and improves operational flexibility. In terms of operation, all controls can be completed through hydraulic handles and knobs, which reduces the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a coal mining machine provided in one embodiment of the utility model.

[0023] Figure 2 A schematic diagram of the traveling part of a coal mining machine provided in one embodiment of the utility model.

[0024] Figure 3 A partial schematic diagram of a coal mining machine display control assembly provided in one embodiment of the utility model.

[0025] Figure 4 This is a schematic structural diagram of the front and rear counterweight modules provided in one embodiment of the utility model.

[0026] The text labels in the figure are as follows: 10, fuselage; 11, groove; 12, oil pipe hole; 20, cutting part; 21, cutting drum; 22, cutting hydraulic motor; 30, machine arm; 31, first hydraulic handle; 32, second hydraulic handle; 33, third hydraulic handle; 34, hydraulic knob; 40, hydraulic cylinder; 50, rear counterweight module; 51, boss; 60, control assembly; 70, walking part; 71, walking hydraulic motor; 72, reducer; 73, small gear; 74, large gear; 75, scraper gear; 80, front counterweight module. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0028] like Figure 1 As shown, this embodiment provides a small coal mining machine, which mainly includes a machine body 10, a cutting part 20, a machine arm 30, a hydraulic drive device, a walking part 70, a control component 60 and a counterweight module. The counterweight module includes a front counterweight module 50 and a rear counterweight module 80. The coal mining machine adopts a full hydraulic design, and there is no need to build a hydraulic station in the machine body. It can be driven by connecting to an external hydraulic pipeline, which greatly reduces the size of the machine body. At the same time, due to the full hydraulic design, the control is completed through the control component, and the coal mining machine body does not need to be connected to a power supply, and there is no need for explosion-proof treatment, which improves the safety of the coal mine.

[0029] In some possible embodiments, the body 10 serves as the basic structure of the entire coal mining machine, and an oil pipe hole 12 is provided on the body 10 as an access port for the hydraulic oil pipe.

[0030] In some possible embodiments, a groove 11 is further provided on the fuselage 10 for cooperating with the bosses 51 on the front and rear counterweight modules, and then fixed by fasteners after cooperating, so as to play a role of positioning and supporting.

[0031] refer to Figure 1 The first end of the arm 30 is connected to a side surface of the machine body 1 by an articulated manner. Specifically, an arm connection seat is provided on the shell of the machine body 10, and one end of the arm 30 is hinged on the arm connection seat. The cutting part 20 is installed at the second end of the arm 30, and includes a cutting drum 21 and a cutting hydraulic motor 22. The cutting hydraulic motor 22 drives the cutting drum 21 to rotate, thereby realizing the coal mining operation.

[0032] In some embodiments, the hydraulic drive device is configured as a hydraulic cylinder 40, one end (cylinder end) of which is hinged to a cylinder mounting seat hinged on one side of the machine body 10, and the other end (piston rod end) is hinged to the middle of the machine arm 30. By controlling the extension and contraction of the hydraulic cylinder 40, the machine arm 30 can be swung, thereby adjusting the working position and angle of the cutting part 20 to achieve cutting of coal seams at different heights.

[0033] Reference 1 and Figure 2 The travel part 70 is installed in the shell of the machine body 10, and is mainly composed of a travel hydraulic motor 71, a reducer 72 and a travel wheel assembly. The output shaft of the travel hydraulic motor 71 is connected to the input shaft of the reducer 72, and the output shaft of the reducer 72 is connected to the travel wheel assembly. The travel wheel assembly includes a pinion 73, a large gear 74 and a scraper gear 75, wherein the pinion 73 is meshed with the large gear 74, and the large gear 74 is coaxially arranged with the scraper gear 75. The scraper gear 75 is meshed with the scraper rack to drive the movement of the coal mining machine.

[0034] refer to Figure 1 and Figure 3 The control assembly 60 is the core of the coal mining machine operation, and includes a multi-way reversing valve group. The reversing valve group includes three hydraulic handles, namely a first hydraulic handle 31, a second hydraulic handle 32, and a third hydraulic handle 33 and a hydraulic knob 34.

[0035] Specifically, the first hydraulic handle 31 is used to control the speed and direction of the travel hydraulic motor 71. Pushing forward controls the travel hydraulic motor 71 to rotate forward, and pulling backward controls the motor to rotate reversely. The opening of the handle corresponds to the flow rate of the travel hydraulic motor, thereby controlling the speed of the travel hydraulic motor 71, and then controlling the travel direction and speed of the coal mining machine.

[0036] The second hydraulic handle 32 controls the rotation speed of the cutting hydraulic motor 22. The handle opening corresponds to the flow rate of the cutting hydraulic motor 22, thereby controlling the rotation speed of the cutting hydraulic motor 22 and then controlling the rotation speed of the cutting drum 21.

[0037] The third hydraulic handle 33 controls the extension and speed of the hydraulic cylinder 40. Pushing forward controls the extension of the hydraulic cylinder 40, while pulling backward controls the retraction of the hydraulic cylinder 40. The opening of the handle corresponds to the flow of the hydraulic cylinder 40, thereby controlling the extension speed of the hydraulic cylinder 40, and then controlling the swing speed of the cutting part 20.

[0038] The hydraulic knob 34 controls the start and stop of the coal mining machine. Specifically, it is a control valve that controls the main oil circuit of the hydraulic station. The control knob can stop the coal mining machine and no hydraulic oil flows into the coal mining machine; the control knob can start the coal mining machine and hydraulic oil begins to flow into the coal mining machine. The oil pumping amount of the hydraulic station is adjusted by the external electrical control system to adjust the speed of the oil pump motor to control the speed of the hydraulic pump.

[0039] refer to Figure 1 , Figure 3 and Figure 4 In some possible embodiments, the rear counterweight module 50 is disposed at the rear of the fuselage 10, and the front counterweight module 80 is disposed at the front of the fuselage 10, for balancing the weight distribution of the front and rear of the coal mining machine. The counterweight module is detachable, which is convenient for transportation and movement. The fuselage 10 and the counterweight module are fixed by bolts after the boss 51 and the groove 11 are matched and positioned, and can be easily disassembled when transportation is required.

[0040] The coal mining machine of this embodiment also includes an external hydraulic station, the oil pump motor of the hydraulic station is connected to an external power supply, the hydraulic station is arranged in the chamber of the working area, and is connected to the coal mining machine through a hydraulic pipeline. The hydraulic station is connected to the valve groups of the cutting hydraulic motor 22, the hydraulic cylinder 40, the travel hydraulic motor 71 and the control component 60 through pipelines to supply oil to each hydraulic component.

[0041] The weight of the coal mining machine of the utility model does not exceed 1 ton, and combined with its compact size, it is very suitable for operation in a narrow mine space. The full hydraulic drive design not only improves the safety of the coal mining machine, but also simplifies the machine structure, reduces the failure rate, and improves work efficiency. The modular design greatly improves the convenience of maintenance and replacement of the coal mining machine, effectively reducing downtime.

[0042] In some possible examples, when using this fully hydraulic small coal mining machine, it is first necessary to transport it to the working face and install the counterweight module to the tail of the machine body. The hydraulic station should be set in the chamber of the working area, and then the hydraulic pipeline is connected to the control components of the coal mining machine. When starting, the operator starts the oil supply of the hydraulic station through the hydraulic knob 34, so that the hydraulic oil begins to flow into the coal mining machine. The movement direction and speed of the coal mining machine are controlled by the first hydraulic handle 31, the speed of the cutting motor is adjusted by the second hydraulic handle 32, and the swing of the machine arm is controlled by the third hydraulic handle 33, which is used to adjust the position of the cutting part.

[0043] When performing coal mining operations, the coal mining machine is moved to the front of the coal seam, and the cutting hydraulic motor 22 is started to start cutting the coal seam. By adjusting the position of the machine arm 30, coal seams of different heights can be cut. The coal mining machine moves forward while cutting to complete the coal mining task. After the operation is completed, the hydraulic oil flow is turned off with the hydraulic knob 34 to stop the coal mining machine. If transportation is required, the counterweight module 50 can be removed for easy movement.

[0044] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0045] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only a preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A small coal mining machine, characterized in that: include: The machine body, the machine arm, the cutting part, the hydraulic drive device, the traveling part, the control assembly, the counterweight module and the hydraulic station; The arm is hinged to the fuselage; the cutting part is arranged on the arm; the hydraulic drive device connects the fuselage and the arm; the walking part, the control component and the counterweight module are arranged on the fuselage; the hydraulic station is separated from the fuselage; the cutting part, the hydraulic drive device, the walking part and the control component are connected to the hydraulic station through a hydraulic pipeline.

2. The small coal mining machine according to claim 1, characterized in that: The first end of the machine arm is hinged on a side surface of the machine body, the cutting part is arranged at the second end of the machine arm, and the cutting part includes a cutting drum and a cutting hydraulic motor, and the cutting hydraulic motor is used to drive the cutting drum to rotate.

3. The small coal mining machine according to claim 1, characterized in that: The hydraulic drive device is configured as a hydraulic cylinder, one end of which is hinged to the fuselage, and the other end is hinged to the middle part of the machine arm, so as to control the swing of the machine arm.

4. The small coal mining machine according to claim 1, characterized in that: The walking part is arranged in the shell of the fuselage, and includes a walking hydraulic motor, a reducer and a walking wheel assembly. The output shaft of the walking hydraulic motor is connected to the input shaft of the reducer; the output shaft of the reducer is connected to the walking wheel assembly, and the walking wheel assembly is engaged with the rack of the scraper to drive the coal mining machine to move.

5. The small coal mining machine according to claim 1, characterized in that: The control assembly includes a multi-way reversing valve group, and the multi-way reversing valve group includes: A cutting control reversing valve is used to control the action of the cutting part; The arm control reversing valve is used to control the action of the hydraulic drive device; Travel control reversing valve, used to control the movement of the travel part; Each reversing valve is connected to an operating element, and the operating element includes a handle and / or a button; The multi-way reversing valve group is connected to the hydraulic station through a hydraulic pipeline, and is used to control the flow direction of the hydraulic oil to achieve control of each actuator.

6. The small coal mining machine according to claim 1, characterized in that: The counterweight module comprises a front counterweight module and a rear counterweight module, which are respectively arranged at the front and rear ends of the machine body and are used to balance the weight distribution of the coal mining machine.

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