Electrically-driven milling machine under mine

Abstract

The utility model relates to the technical field of mine road building mechanical equipment, in particular to an underground electrically-driven milling machine which comprises a frame system, a milling system and a hydraulic system, the milling system and the hydraulic system are arranged on the frame system, a power system is further arranged on the frame system, and an underground electric power system is further arranged on the electrically-driven milling machine. The power system comprises an explosion-proof motor for driving the milling system, an explosion-proof motor for driving the hydraulic system and a forced circulation water cooling system for cooling the motors and the hydraulic system. According to the utility model, the indexes that the height size of the whole machine is reduced and the power of the whole machine is stronger are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of mining road construction machinery and equipment, in particular to an underground electric-driven milling machine. Background Art

[0002] The tunnels of underground coal mines have various uneven road surfaces due to long-term load-carrying operation of transport vehicles, ground pressure causing tunnel ground uplift, and cement road surface damage. Rapid leveling of road surface is an urgent problem to be solved. Diesel engine-driven milling machines are widely used on roads as road milling equipment for highways and other urban roads, but the noise and pollution problems they have are difficult to solve. Coal mines have mature and complete power supply systems underground. If the power system of traditional mining milling machines can be improved, combined with the underground power supply system, the working efficiency of the current milling machines will be greatly improved. Utility Model Content

[0003] The utility model provides an underground electric-driven milling machine, which adopts an electric-driven mode in cooperation with an underground power supply system, thereby solving the problems of low power and serious pollution existing in the current milling machine driven by a diesel engine.

[0004] The technical solution of the utility model is as follows:

[0005] A mine electric-driven milling machine comprises a frame system and a milling system and a hydraulic system arranged on the frame system. The frame system is also provided with a power system. The electric-driven milling machine is also provided with a high-voltage control cabinet with one end connected to the underground power system and the other end connected to the power system. The power system comprises an explosion-proof motor for driving the milling system, an explosion-proof motor for driving the hydraulic system, and a forced circulation water cooling system for cooling the motor and the hydraulic system.

[0006] Furthermore, the explosion-proof motor driving the milling system in the power system is connected to the high-voltage control cabinet via a mining cable, and the output end is provided with a belt transmission system for transmitting power to the milling system and a bearing support seat for offsetting the radial force of the belt transmission system.

[0007] Furthermore, the explosion-proof motor driving the hydraulic system is connected to the high-voltage control cabinet via a mining cable, and a transfer case for transmitting power to multiple hydraulic systems is arranged at the output end, and the output end of the transfer case is connected to the power pump of the hydraulic system.

[0008] Furthermore, the forced circulation water cooling system includes a coolant tank for storing coolant, a circulating water pump for driving the coolant to circulate, a composite water cooler and pipeline connections.

[0009] Furthermore, it also includes a cable winding system, which includes a cable winding drum, a cable winding drum drive motor and a mechanical connection structure. The cable winding drum drive motor is connected to the hydraulic system, and the mechanical connection structure is connected to the rear end of the frame system. The cable winding system has a certain range of motion relative to the frame system to ensure the realization of other functions of the frame system.

[0010] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0011] The electric-driven milling machine for underground mines provided by the utility model adopts the electric-driven power mode widely used in mining equipment, and with the improvement of the structure and power system of the milling machine itself, the height of the whole machine is reduced and the whole machine is more powerful. The power density of the whole machine is significantly higher than that of the milling machine driven by the traditional diesel engine; at the same time, the electric drive mode has no emission and zero pollution, ensuring the cleanliness and safety of the underground working environment. Through the setting of the cable winding system, it can ensure the storage of a certain length of mining cable, and realize the autonomous movement of the milling machine within a limited range. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the overall structure of an underground electric-driven milling machine.

[0013] Figure 2 Schematic diagram of the arrangement of the cable winding system in the embodiment.

[0014] Figure numerals, 1-frame system; 2-milling system; 3-hydraulic system; 4-power control cabinet; 5-explosion-proof motor for driving the milling system; 6-explosion-proof motor for driving the hydraulic system; 7-compound water cooler; 8-cable winding system; 9-traction cylinder, 10-support rod. DETAILED DESCRIPTION

[0015] The technical solution provided by the present invention will be further described in detail below through the accompanying drawings and embodiments, so that ordinary technicians in the field can accurately understand the structural characteristics and working principles of the device provided by the present solution.

[0016] The utility model discloses an underground electric-driven milling machine, comprising a frame system 1 and a milling system 2 and a hydraulic system 3 arranged on the frame system 1. The frame system 1 is also provided with a power system. The electric-driven milling machine is also provided with a strong electric control cabinet 4 with one end connected to the underground power system and the other end connected to the power system. The power system comprises an explosion-proof motor 5 for driving the milling system, an explosion-proof motor 6 for driving the hydraulic system and a forced circulation water cooling system for cooling the motor and the hydraulic system.

[0017] See also Figure 1As shown, in the power system, the explosion-proof motor 5 driving the milling system is connected to the high-voltage control cabinet 4 through a mining cable, and the output end is arranged with a belt drive system for transmitting power to the milling system and a bearing support seat for offsetting the radial force of the belt drive system; the explosion-proof motor 6 driving the hydraulic system is connected to the high-voltage control cabinet 4 through a mining cable, and the output end is arranged with a transfer case for transmitting power to multiple hydraulic systems, and the output end of the transfer case is connected to the power pump of the hydraulic system; because it involves underground mining operations, the various designs of the explosion-proof motor should strictly comply with the explosion-proof requirements, and all lines of the explosion-proof motor are connected through a mining flameproof box to ensure that all lines of the explosion-proof motor are safe and reliable; the forced circulation water cooling system is an auxiliary system for the motor and the hydraulic system 3 to exchange heat with the outside world to ensure the working stability of the whole machine. The coolant stored in the coolant tank is driven by the water pump and returns to the coolant tank through the motor through the composite water cooler 7 at a certain pressure, wherein the composite water cooler 7 is the main device for heat exchange.

[0018] See also Figure 2 As shown, a cable winding system 8 is also provided, which includes a cable winding drum, a cable winding drum driving motor and a mechanical connection structure. The cable winding system 8 is arranged at the rear of the frame system 1 and is connected to the frame system 1 through a hydraulically driven mechanical connection structure. The cable winding drum can store a certain length of special mining cable by winding, so as to realize the autonomous movement of the milling machine within a limited range. In a specific embodiment, the traction cylinder 9 and the support rod 10 are used to achieve a certain movement of the cable winding system 8 relative to the frame system 1, so as to ensure the normal opening and closing of the rear cover of the frame system and the normal maintenance and use of the high-voltage control cabinet 4.

[0019] The power transmission route of the underground electric-driven milling machine is as follows: the underground power grid provides the whole machine with a voltage level of 1140V to the high-voltage control cabinet 4. The high-voltage control cabinet 4 needs to provide at least two power supplies to the explosion-proof motor 5 driving the milling system and the explosion-proof motor 6 driving the hydraulic system. In addition, more than two power supplies need to be prepared as backup power supplies for auxiliary systems such as the cable winding system 8 and the forced circulation water cooling system, which are used when the above auxiliary systems are driven by electric motors. The power of the explosion-proof motor 5 driving the milling system is transmitted to the milling system 2 through the output shaft, the bearing support seat, and the V-belt transmission, thereby driving the high-speed rotation of the milling barrel to achieve the effect of cutting the working road surface; the power of the explosion-proof motor 6 driving the hydraulic system is transmitted to the power device of the hydraulic system 3 - the hydraulic oil pump through the output shaft and the transfer case, thereby providing power for the whole machine to travel, the belt conveyor to feed, the cable winding system, and the forced circulation water cooling system.

[0020] At the same time, the contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An underground electric-driven milling machine, comprising a frame system (1) and a milling system (2) and a hydraulic system (3) arranged on the frame system (1), characterized in that: The frame system (1) is also provided with a power system. The electric-driven milling machine is also provided with a high-voltage control cabinet (4) having one end connected to an underground power system and the other end connected to the power system. The power system includes an explosion-proof motor (5) for driving the milling system, an explosion-proof motor (6) for driving the hydraulic system, and a forced circulation water cooling system for cooling the motor and the hydraulic system.

2. The electric-driven milling machine for underground mines according to claim 1, characterized in that: The explosion-proof motor (5) driving the milling system in the power system is connected to the high-voltage control cabinet (4) via a mining cable, and a belt transmission system for transmitting power to the milling system (2) and a bearing support seat for offsetting the radial force of the belt transmission system are arranged at the output end.

3. The electric-driven milling machine for underground mines according to claim 1, characterized in that: The explosion-proof motor (6) driving the hydraulic system is connected to the high-voltage control cabinet (4) via a mining cable, and a transfer case for transmitting power to multiple hydraulic systems is arranged at the output end, and the output end of the transfer case is connected to the power pump of the hydraulic system (3).

4. The underground electric-driven milling machine according to claim 1, characterized in that: The forced circulation water cooling system comprises a coolant tank for storing coolant, a circulating water pump for driving the coolant to circulate, a composite water cooler (7), and pipeline connections.

5. The underground electric-driven milling machine according to claim 1, characterized in that: It also includes a cable winding system (8), which includes a cable winding drum, a cable winding drum drive motor and a mechanical connection structure. The cable winding drum drive motor is connected to the hydraulic system (3), and the mechanical connection structure is connected to the rear end of the frame system (1).

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