Chain arm sawing machine for coal mine and oil tank device of hydraulic system thereof

Abstract

This utility model discloses an oil tank device for a chain arm sawing machine used in coal mines and its hydraulic system. The oil tank device includes: a main oil tank installed above the machine platform; an auxiliary oil tank installed below the machine platform and between a pair of tracks of the traveling device; and an oil tank connecting assembly connecting the main and auxiliary oil tanks, ensuring their internal cavities are interconnected. This utility model's oil tank device for a chain arm sawing machine used in coal mines utilizes both a main and auxiliary oil tank to simultaneously store the oil required for hydraulic system circulation. This results in good oil heat dissipation, less fluctuation in system response, ensures normal system operation, reduces the maintenance frequency of the hydraulic system, and improves tunnel mining efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coal mining equipment technology, and in particular to a chain arm sawing machine for coal mines and its hydraulic system oil tank device. Background Technology

[0002] In existing technologies, chain arm saws are used for bottom cutting and pressure relief in coal mine roadways. However, existing technologies often install the integrated oil tank of the chain arm saw's hydraulic system on top of the machine platform. Due to the limited size of the machine platform, the size of the integrated oil tank cannot be too large, which affects the tank volume. A small tank volume affects the performance and stability of the hydraulic system, and insufficient oil cooling leads to fluctuations in system response, increases the maintenance frequency of the hydraulic system, and affects coal mining efficiency. Summary of the Invention

[0003] The purpose of this utility model is to solve the above problems by providing a chain arm sawing machine for coal mines and its hydraulic system oil tank device. The main oil tank and the auxiliary oil tank simultaneously store the oil required for the circulation of the hydraulic system. The oil has good heat dissipation, the system response is not easily fluctuated, the normal operation of the system is ensured, the maintenance frequency of the hydraulic system is reduced, and the efficiency of roadway mining is improved.

[0004] To achieve the above-mentioned objectives of this utility model, one aspect of this utility model is to provide an oil tank device for the hydraulic system of a chain arm sawing machine for coal mines, comprising: a main oil tank for installation above the machine platform of the chain arm sawing machine; an auxiliary oil tank for installation below the machine platform and between a pair of tracks of the traveling device; and an oil tank connecting assembly for connecting the main oil tank and the auxiliary oil tank together and making their inner cavities communicate with each other.

[0005] Preferably, the oil tank connection assembly includes: a main oil tank connection flange detachably mounted on the main oil tank; a secondary oil tank connection flange detachably mounted on the secondary oil tank; and oil pipes at both ends connected to the main oil tank connection flange and the secondary oil tank connection flange, respectively.

[0006] Preferably, the main oil tank connecting flange is installed on the side wall of the main oil tank.

[0007] Preferably, the side wall of the main oil tank has a first oil port that communicates with the inner cavity, and the side wall of the main oil tank connecting flange has a second oil port that connects with and communicates with the first oil port.

[0008] Preferably, the bottom of the main oil tank connecting flange is provided with one or more cylindrical protrusions for connection with oil pipes.

[0009] Preferably, the top of the auxiliary oil tank connecting flange is provided with one or more cylindrical protrusions for connection with oil pipes.

[0010] Preferably, the top of the auxiliary oil tank is provided with multiple through holes and a cover plate assembly for sealing the through holes.

[0011] Preferably, an oil suction assembly is provided on the top of the auxiliary oil tank.

[0012] Preferably, a return oil assembly is provided on the top of the main oil tank.

[0013] Preferably, the top of the main fuel tank is equipped with a magnetic rod assembly that extends into it from the bottom.

[0014] In addition, this utility model also provides a chain arm sawing machine for coal mines, which includes the oil tank device of the hydraulic system of the chain arm sawing machine for coal mines as described above.

[0015] Compared with the prior art, the oil tank device of the hydraulic system of the chain arm sawing machine for coal mines of this utility model has the following advantages:

[0016] 1. The oil tank device of the chain arm sawing machine for coal mines and its hydraulic system adopts a main oil tank and an auxiliary oil tank to store the oil required for the circulation of the hydraulic system at the same time, which increases the oil tank volume and heat dissipation area, resulting in good oil heat dissipation, less fluctuation in the response of the hydraulic system, ensuring the normal operation of the system, reducing the maintenance frequency of the hydraulic system, and improving the efficiency of roadway mining.

[0017] 2. The oil tank device of the chain arm sawing machine for coal mines and its hydraulic system of this utility model, in addition to installing the main oil tank above the machine platform, also makes full use of the space between a pair of tracks of the traveling device below the machine platform without affecting the size of the machine platform, and places the auxiliary oil tank in this space. This increases the oil storage capacity and heat dissipation area, which is conducive to oil heat dissipation, ensures the performance and working stability of the hydraulic system, and also rationally arranges the overall structure of the chain arm sawing machine for coal mines.

[0018] The present invention will now be described in detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a front view of the oil tank device of the hydraulic system of the chain arm sawing machine for coal mines according to this utility model (the machine platform is not shown);

[0020] Figure 2 This is a top view of the oil tank device of the hydraulic system of the chain arm sawing machine for coal mines according to this utility model (the machine platform is not shown);

[0021] Figure 3 A schematic diagram of the main fuel tank;

[0022] Figure 4 This is a schematic diagram of the auxiliary fuel tank.

[0023] Figure 5This is a perspective view of the utility oil tank device installed on the platform of a chain arm saw for coal mines;

[0024] Figure 6 This is a partially exploded view of the fuel tank device installed on the platform of a chain arm sawing machine used in coal mines. Detailed Implementation

[0025] like Figure 1 , Figure 2 The figures shown are schematic diagrams of different structures of the oil tank device in the hydraulic system of the coal mine chain arm sawing machine of this utility model. Figure 5 , Figure 6 The images shown are a perspective view and a partial exploded view of the oil tank assembly installed on the platform of a coal mine chain arm saw. Figure 1 , Figure 2 , Figure 5 , Figure 6 It is known that the oil tank device of the hydraulic system of the coal mine chain arm sawing machine of this utility model includes: a main oil tank 1 for installation above the machine body platform of the chain arm sawing machine; an auxiliary oil tank 8 for installation below the machine body platform and between a pair of tracks of the traveling device; and an oil tank connecting assembly 6 for connecting the main oil tank and the auxiliary oil tank together and making their inner cavities communicate.

[0026] This utility model relates to an oil tank device for the hydraulic system of a chain arm sawing machine used in coal mines. The main oil tank is installed on one side of the chain arm sawing machine's platform 20 (e.g., Figure 5 , Figure 6 Above the main oil tank (shown on the left), the auxiliary oil tank is installed below the machine platform and in the space between a pair of tracks 21 of the traveling device. The inner cavities of the main oil tank and the auxiliary oil tank are connected by an oil tank connecting assembly that passes through the machine platform (correspondingly, through holes are opened at the corresponding positions of the machine platform). Thus, the hydraulic oil required by the hydraulic system can be stored in both the main oil tank and the auxiliary oil tank, which increases the oil storage capacity and the heat dissipation area of ​​the hydraulic oil, which is conducive to oil heat dissipation and can ensure the performance and working stability of the hydraulic system. At the same time, the auxiliary oil tank is installed in the space enclosed by the machine platform and a pair of tracks, which makes reasonable use of the spatial structure of the coal mine chain arm sawing machine. There is no need to make additional adjustments to the overall size of the machine body and the chain arm sawing machine, so that the size of the chain arm sawing machine can meet the requirements of the roadway.

[0027] Specifically, such as Figure 3As shown, the main oil tank of this utility model is a rectangular or cubic box, with its bottom fixedly mounted on the machine platform (it can be fastened to the machine platform with bolts). A first oil port (connected to the auxiliary oil tank via the first oil port) is opened on the inner side wall (i.e., the side wall facing the central axis of the machine platform). An observation port and an inspection port are opened on the outer side wall opposite to the inner side wall. A liquid level / temperature gauge 11 is installed at the observation port, and a sealing cap 10 is installed at the inspection port. Furthermore, a return oil assembly 2 for connection to the hydraulic system's return oil pipeline, an air filter 3, a magnetic rod assembly 4 extending into the box body at the bottom, and a drain oil assembly 5 for connection to the hydraulic system's drain oil pipeline are installed on the top of the main oil tank.

[0028] And such Figure 4 As shown, the auxiliary oil tank of this utility model is rectangular in shape. Its dimensions can be determined based on the cavity size formed between the machine platform and a pair of tracks of an existing mining chain arm sawing machine. The bottom is supported by the base frame of the mining chain arm sawing machine (which can be fixed by bolts or welding), and the top is fixedly connected to the machine platform by multiple bolt assemblies. The base frame of the mining chain arm sawing machine is existing technology and will not be described in detail here. Furthermore, the top of the auxiliary oil tank is provided with multiple through holes and a cover plate assembly 9 for sealing the through holes, and an oil suction assembly 7 is provided on the top of the auxiliary oil tank.

[0029] In the design, the main oil tank can refer to the structure of the main oil tank of the existing coal mine chain arm sawing machine. The difference is that the present invention has a first oil port on the inner wall of the existing main oil tank for connection with the oil tank connection assembly, and the oil suction assembly for connection with the hydraulic pump of the hydraulic system is set on the top of the auxiliary oil tank. Among them, the oil return assembly, air filter, magnetic rod assembly, oil drain assembly, oil suction assembly, sealing cover, liquid level and temperature gauge, etc. can all adopt the structure of the existing technology, and will not be described in detail here.

[0030] In order to connect the inner cavities of the main fuel tank and the auxiliary fuel tank into one unit, this utility model connects the two together through a fuel tank connection assembly. The fuel tank connection assembly includes: a main fuel tank connection flange 61 that is detachably installed on the side wall of the main fuel tank; an auxiliary fuel tank connection flange 62 that is detachably installed on the auxiliary fuel tank; and oil pipes 63 (two oil pipes are shown in the figure) whose two ends are respectively connected to the main fuel tank connection flange and the auxiliary fuel tank connection flange.

[0031] Among them, such as Figure 4 As shown, the main oil tank connecting flange is a rectangular shell. A second oil port is opened on the side wall facing the main oil tank for docking and communicating with the first oil port. One or more (two in the figure) cylindrical protrusions are provided at the bottom for connecting to two oil pipes respectively. In application, the upper end of the oil pipe can be sleeved on the cylindrical protrusion to be fixedly connected to the main oil tank connecting flange.

[0032] The auxiliary oil tank connecting flange is a connecting plate with a pair of through holes. The top (or upper surface) of the connecting plate has two cylindrical protrusions for connecting to two oil pipes respectively. In application, the lower end of the oil pipe is fitted over the cylindrical protrusions to securely connect to the auxiliary oil tank connecting flange. Alternatively, the auxiliary oil tank connecting flange can be a pair of connecting plates, each with a through hole, and the top of the connecting plate has a cylindrical protrusion for connecting to the lower end of the oil pipe.

[0033] During assembly, the main oil tank connecting flange is fastened to the main oil tank with bolts, and the auxiliary oil tank connecting flange is fastened to the auxiliary oil tank with bolts. The two oil pipes pass through the through holes opened on the machine platform, and are connected to the main oil tank connecting flange and the auxiliary oil tank connecting flange at the upper and lower ends respectively, thereby connecting the main oil tank and the auxiliary oil tank together and making the internal cavities interconnected. This allows the hydraulic oil to flow smoothly in the main and auxiliary oil tanks, ensuring the stable operation of the hydraulic system.

[0034] When the coal mine chain arm sawing machine equipped with the oil tank device of this utility model is working, the hydraulic pump of the hydraulic system draws the hydraulic oil required for normal operation from the auxiliary oil tank through the oil suction pipe and the oil suction filter of the oil suction assembly, and supplies it to the various actuators of the hydraulic system. The returned hydraulic oil flows back to the main oil tank through the return oil pipe and the return oil filter of the return oil assembly, while the pressure relief oil flows back to the main oil tank through the drain oil pipe and the drain oil assembly. In addition, iron filings in the oil tank are attracted by the magnetic rod assembly, the oil temperature and oil level of the main oil tank are monitored by the liquid level and temperature gauge, the cleanliness of the oil in the tank and the pressure balance inside and outside the tank are maintained by the air filter, the interior of the auxiliary oil tank is cleaned by the removable cover assembly on the top of the auxiliary oil tank which is opened periodically, and the interior of the main oil tank is cleaned by opening the sealing cover on the side wall of the main oil tank periodically, ensuring that the hydraulic oil can flow smoothly in the main and auxiliary oil tanks, so that the hydraulic system can operate stably.

[0035] Furthermore, this utility model also provides a chain arm sawing machine for coal mines, which includes the oil tank device of the hydraulic system of the chain arm sawing machine for coal mines as described above. Other structures of the chain arm sawing machine for coal mines all adopt existing technology and will not be described in detail here.

[0036] In summary, the oil tank device of the coal mine chain arm sawing machine and its hydraulic system of this utility model adopts a main and auxiliary oil tank to store the oil required for the circulation of the hydraulic system, which increases the oil tank volume and heat dissipation area, resulting in good oil heat dissipation and less fluctuation in the response of the hydraulic system. Moreover, the oil tank device has a simple structure, high integration and good stability, which can ensure the normal operation of the hydraulic system and the coal mine chain arm sawing machine, reduce the maintenance frequency of the hydraulic system, and improve the efficiency of roadway mining.

[0037] Although the present invention has been described in detail above, it is not limited thereto. Those skilled in the art can make modifications based on the principles of the present invention. Therefore, all modifications made in accordance with the principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims

1. A hydraulic tank device for a chain arm sawing machine used in coal mines, characterized in that, include: The main oil tank is installed above the machine platform of the chain arm saw. Auxiliary fuel tank for installation below the fuselage platform and between a pair of tracks of the traveling gear; A fuel tank connection assembly used to connect the main fuel tank and the auxiliary fuel tank together and make their internal cavities communicate with each other.

2. The fuel tank device according to claim 1, characterized in that, The fuel tank connection assembly includes: A detachable main fuel tank connection flange mounted on the main fuel tank; A detachable auxiliary oil tank connection flange mounted on the auxiliary oil tank; The oil pipes at both ends are connected to the main oil tank connecting flange and the auxiliary oil tank connecting flange, respectively.

3. The fuel tank device according to claim 1 or 2, characterized in that, The main oil tank connecting flange is installed on the side wall of the main oil tank.

4. The fuel tank device according to claim 3, characterized in that, The main oil tank has a first oil port on its side wall that communicates with the inner cavity, and the main oil tank connecting flange has a second oil port on its side wall that connects with and is aligned with the first oil port.

5. The fuel tank device according to claim 3, characterized in that, The bottom of the main oil tank connecting flange is provided with one or more cylindrical protrusions for connection with oil pipes.

6. The fuel tank device according to claim 3, characterized in that, The top of the auxiliary oil tank connecting flange is provided with one or more cylindrical protrusions for connection with oil pipes.

7. The fuel tank device according to claim 1, characterized in that, The top of the auxiliary oil tank is provided with multiple through holes and a cover plate assembly for sealing the through holes.

8. The fuel tank device according to claim 1, characterized in that, An oil-absorbing component is installed on the top of the auxiliary oil tank.

9. The fuel tank device according to claim 1, characterized in that, A return oil assembly is installed on the top of the main oil tank.

10. A chain arm sawing machine for coal mines, characterized in that, Includes the oil tank device of the hydraulic system of the coal mine chain arm saw as described in any one of claims 1-9.

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