Novel permanent magnet direct drive motor chain transmission cutting device for mining machine

Abstract

The utility model relates to a novel permanent magnet direct drive motor chain transmission cutting device for a mining machine, which comprises a main frame, a cutting roller, a power source and a transmission structure connected between the cutting roller and the power source, the transmission structure comprises a front transmission shaft, a rear transmission shaft and a transmission chain connected between the front transmission shaft and the rear transmission shaft, the transmission chain and the cutting roller are connected and rotate synchronously, the power source is used for directly or indirectly driving the cutting roller to rotate, and the power source is electric energy driving equipment including a permanent magnet direct drive motor. The cutting roller is indirectly or directly driven to rotate by using electric energy driving equipment such as a permanent magnet direct drive motor, only electric energy is consumed when the cutting roller works, no extra pollutants are generated, and the cutting roller is more environment-friendly and energy-saving.

Description

Technical Field

[0001] The present application relates to the field of chain rollers, and in particular to a novel permanent magnet direct-drive motor chain-driven cutting device for a mining machine. Background Art

[0002] Chain drive cutting device is also called chain cutting drum, which is often used in mining machines. It uses a special high-hardness cutting head to cut and crush coal blocks for easy mining. Most chain drums on the market are driven by a power source and chain transmission structure at the rear. At present, diesel engines are often used as power sources. Although they can meet basic mining needs, they have problems such as high noise, serious emission pollution, high maintenance costs, and low work efficiency. Utility Model Content

[0003] In order to reduce the energy consumption of the chain roller during operation and to adapt to the green development direction of environmental protection and energy saving, the present application provides a new type of permanent magnet direct-drive motor chain drive cutting device for a mining machine.

[0004] The present application provides a new type of permanent magnet direct drive motor chain drive cutting device for mining machines, which adopts the following technical solutions:

[0005] A new type of permanent magnet direct drive motor chain drive cutting device for a mining machine includes a main frame, a cutting drum, a power source and a transmission structure connected between the cutting drum and the power source, the transmission structure includes a front drive shaft, a rear drive shaft and a transmission chain connected therebetween, the transmission chain is connected to the cutting drum and rotates synchronously, the power source is used to directly or indirectly drive the cutting drum to rotate, and the power source is an electric energy drive device including a permanent magnet direct drive motor.

[0006] By adopting the above technical solution, by using electric energy drive equipment to replace the cutting and transmission mechanism powered by traditional diesel engines or hydraulic motors, more energy consumption can be saved, pollution to the environment can be reduced, and efficient, environmentally friendly and low-noise operation of the mining machine can be achieved; the electric energy drive equipment can be a permanent magnet direct drive motor or a hydraulic motor, which uses magnetic energy to convert into electrical energy to drive the cutting drum to rotate, and has a simpler structure, more convenient installation, and is easy for later maintenance.

[0007] Preferably, the power source is arranged on the main frame, and two power sources are arranged opposite to each other on both sides of the main frame, and the rotating shafts of the two power sources are connected with couplings and are connected to the rear transmission shaft in the main frame through the couplings.

[0008] By adopting the above technical solution, in one embodiment, the power source can be set only on the main frame. Taking into account the consumption of power transmission and in order to ensure sufficient power, two power sources are provided, so that the power source is connected to the rear drive shaft to drive the transmission rotation, thereby indirectly driving the cutting drum to rotate.

[0009] Preferably, the interior of the cutting drum is a hollow structure, and the power source is arranged inside the cutting drum and connected to the front transmission shaft to directly drive the cutting drum to rotate.

[0010] By adopting the above technical solution, in another embodiment, the power source can be only arranged inside the cutting drum, and the power source is connected to the front drive shaft to drive the cutting drum to rotate directly. Since it is a direct drive, the transmission loss is small, so the power source can be set to one or designed to be two.

[0011] Preferably, the cutting drum comprises two ones arranged on the left and right sides of the transmission chain, the two cutting drums are connected to the transmission chain through the front transmission shaft, the power source is arranged inside any one of the cutting drums, and the rotating shaft of the power source is connected to the front transmission shaft.

[0012] By adopting the above technical solution, the rotating shaft of the power source is connected to the front transmission shaft, thereby driving the transmission chain and the cutting drum to rotate synchronously. The power source directly drives the cutting drum to rotate, and the transmission loss is small. Therefore, only one power source is required to meet the requirements.

[0013] Preferably, one power source is respectively provided inside the two cutting drums, and the rotating shafts of the two power sources are connected to the front transmission shaft.

[0014] By adopting the above technical solution, two power sources can be arranged inside the cutting drum, thereby ensuring a greater output power and facilitating improving the working efficiency of the cutting drum.

[0015] Preferably, the power source is connected to the cutting drum, and the power source is fixed outside the cutting drum, one or two power sources are provided, and the rotating shaft of the power source is connected to the front transmission shaft.

[0016] By adopting the above technical solution, in another embodiment, the power source directly drives the cutting drum to rotate, and the power source can be directly arranged outside the cutting drum, which can also ensure the normal rotation of the cutting drum.

[0017] Preferably, the power source is disposed inside both the main frame and the cutting drum, and two power sources are disposed on the main frame, and one or two power sources are disposed inside the cutting drum.

[0018] By adopting the above technical solution, in another embodiment, power sources are provided on both the main frame and the cutting drum. A minimum of three power sources and a maximum of four power sources can be provided. The power source has the highest output power, so that the cutting drum has a greater working efficiency.

[0019] Preferably, the power source is a permanent magnet direct drive motor or a hydraulic motor.

[0020] By adopting permanent magnet direct drive motor chain drive roller to replace the cutting and transmission mechanism powered by traditional diesel engine or hydraulic motor, the mining machine can achieve efficient, environmentally friendly and low noise operation, adapting to the development concept of green energy saving.

[0021] Preferably, when the permanent magnet direct drive motor is arranged inside the cutting drum, the rotor of the permanent magnet direct drive motor is fixed to the inner wall of the cutting drum, and the stator shaft of the permanent magnet direct drive motor is fixedly connected to the front transmission shaft.

[0022] By adopting the above technical solution, when the stator shaft is given an excitation current, the magnetic flux of the permanent magnet on the rotor is controlled, and then torque is generated through the interaction of the magnetic fields to drive the cutting drum to rotate.

[0023] Preferably, cutting teeth are provided on the outside of the transmission chain and the cutting drum.

[0024] By adopting the above technical solution, cutting teeth are arranged on the outside of the transmission chain and the cutting drum, thereby increasing the contact area with the coal mine and improving the cutting and crushing efficiency of the cutting drum.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. This application uses electric energy drive equipment including a permanent magnet direct drive motor to drive the cutting drum to rotate directly or indirectly. Compared with the driving method of a diesel engine, it saves more energy and reduces the emission of pollutants. It is also smaller in size and simpler in structure, and is in line with the development direction of green energy conservation and environmental protection.

[0027] 2. The cutting drum is driven by arranging a power source only in the main frame, only in the cutting drum, or in both the main frame and the cutting drum. When the power source is arranged in both the main frame and the cutting drum, the output power of the power source is relatively large, which is convenient for improving the working efficiency of the cutting drum; BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of Example 1 and Example 3 of the utility model;

[0029] Figure 2 It is a top view of Example 1 and Example 3 of the utility model;

[0030] Figure 3 It is a cross-sectional view of the rear drive shaft AA of Embodiment 1 and Embodiment 3 of the present utility model;

[0031] Figure 4 This is a sectional view of the front transmission shaft BB of Example 1 of the utility model;

[0032] Figure 5 It is a three-dimensional diagram of Example 2 of the utility model;

[0033] Figure 6 It is a top view of embodiment 2 of the utility model;

[0034] Figure 7 It is a cross-sectional view of the rear drive shaft AA of Embodiment 2 of the present utility model;

[0035] Figure 8 It is a BB cross-sectional view of the front transmission shaft of Embodiment 2 and Embodiment 3 of the present utility model;

[0036] Fig. 9 It is a CC cross-sectional view of Embodiment 1, Embodiment 2 and Embodiment 3 of the present utility model;

[0037] Fig.10 It is a DD cross-sectional view of Embodiment 1, Embodiment 2 and Embodiment 3 of the present utility model.

[0038] Explanation of the accompanying drawings: 01, cutting drum; 02, power source; 1, left drum; 2, right drum; 3, main frame; 4, transmission chain; 5, first rear axle permanent magnet motor; 6, second rear axle permanent magnet motor; 7, first front axle permanent magnet motor; 8, second front axle permanent magnet motor; 9, cutting tooth; 10, chain plate; 11, fixing seat; 12, second screw; 201, rear gear ring; 202, first flat key; 203, motor flange; 204, second flat key; 205, rear drive shaft; 301, front gear ring; 302, first screw; 303, front drive shaft; 304, first front axle permanent magnet motor stator; 305, first front axle permanent magnet motor rotor; 306, third flat key. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-10 This application is described in further detail.

[0040] Permanent magnet direct drive electric rollers are gradually being used in various fields due to their advantages of high efficiency, energy saving, and low noise. However, in the field of mining machines, the application of all-electric permanent magnet direct drive chain drive rollers is still in its infancy, and there are still few related technical research and practical application cases. Therefore, the utility model proposes an improved technology for replacing the traditional diesel engine with a permanent magnet direct drive motor chain drive cutting device for mining machines, aiming to solve the problems existing in the prior art and improve the operating efficiency and environmental performance of mining machines.

[0041] Permanent magnet direct drive motors have many advantages, such as high efficiency, high power factor, high torque at low speed, large starting torque, small size, low noise, and high-precision control capabilities in specific applications. These motors cancel the traditional reduction device and directly connect the permanent magnet motor to the mechanical load, eliminating the loss in the energy conversion process, so the energy utilization rate is greatly improved.

[0042] The present application discloses a novel permanent magnet direct drive motor chain drive cutting device for a mining machine. Figure 1-Figure 4 The new type of permanent magnet direct drive motor chain drive cutting device for mining machines includes a main frame 3, a cutting drum 01, a power source 02, and a transmission structure connected between the cutting drum 01 and the power source 02. The transmission structure includes a front transmission shaft 303 connected to the cutting drum 01, a rear transmission shaft 205 arranged in the main frame 3, and a transmission chain 4 connected therebetween. Cutting teeth 9 are welded to the outside of the cutting drum 01, and all the cutting teeth 9 are symmetrically welded to the cutting drum 01 in a double spiral arrangement. Symmetrical welding of all cutting teeth 9 can avoid the problem of unbalanced force during cutting. The cutting teeth 9 are used to cut coal rock or mineral rock. Fig. 9 and Fig.10 The transmission chain 4 is connected by a plurality of chain plates 10, and pick teeth 9 are also welded on the chain plates 10.

[0043] The power source 02 is an electric energy drive device including a permanent magnet direct drive motor, and is used to directly or indirectly drive the cutting drum 01 to rotate. The power source 02 can use a permanent magnet direct drive motor or a hydraulic motor. This application is described by taking the power source 02 as a permanent magnet direct drive motor as an example.

[0044] Reference Figure 1-Figure 4 There are many locations for setting the power source 02. In the first embodiment, the power source 02 is only set on the main frame 3.

[0045] The power source 02 includes a first rear shaft permanent magnet motor 5 and a second rear shaft permanent magnet motor 6 installed at both ends of the rear drive shaft 205. The first rear shaft permanent magnet motor 5 is connected to the rear drive shaft 205 through a second flat key 204, and the first rear shaft permanent magnet motor 5 is connected to other parts of the mining machine through a motor flange 203. The installation and connection method of the second rear shaft permanent magnet motor 6 is the same as above. The rear drive shaft 205 is installed on the main frame 3, and a rear gear ring 201 is installed on the shaft and connected through a first flat key 202.

[0046] Reference Figure 5-Figure 8 In the second embodiment, the power source 02 is only arranged on the cutting drum 01, but not on the main frame 3, so as to directly drive the cutting drum 01 to rotate, thereby reducing the power loss caused by the transmission chain 4 of the transmission structure.

[0047] In one possible implementation, the cutting drum 01 is a hollow structure, the power source 02 is disposed inside the cutting drum 01 and is connected to the front transmission shaft 303 to directly drive the cutting drum 01 to rotate.

[0048] The middle section of the front transmission shaft 303 is rectangular and is fixed to the main frame 3 by a fixing seat 11 and a plurality of second screws 12. The cutting drum 01 includes a left drum 1 and a right drum 2 respectively mounted on the left and right sides of the front transmission shaft 303, and the front gear ring 301 is fixed to the left drum 1 and the right drum 2 by a plurality of first screws 302.

[0049] In the first case: a power source 02 is provided in the left drum 1 / right drum 2, and the first front shaft permanent magnet motor 7 is installed in the left drum 1 as an example for explanation. The first front shaft permanent magnet motor stator 304 is fixed to the front transmission shaft 303 through the third flat key 306, and the first front shaft permanent magnet motor rotor 305 is fixed to the left drum 1. When the first front shaft permanent magnet motor 7 is working, the front transmission shaft 303 and the first front shaft permanent magnet motor stator 304 are fixed, while the first front shaft permanent magnet motor rotor 305 and the left drum 1 rotate, thereby driving the front gear ring 301 to rotate.

[0050] In the second case: a second front shaft permanent magnet motor 8 is also installed inside the right drum 2, that is, two permanent magnet motors are arranged inside the cutting drum 01. The connection mode and working principle of the second front shaft permanent magnet motor 8 are the same as above, so that the cutting drum 01 can obtain a greater output power. At this time, the rear ring gear 201 is the driven wheel, and the front ring gear 301 is the driving wheel. When the first front shaft permanent magnet motor 7 and the second front shaft permanent magnet motor 8 are working, the front ring gear 301, the left drum 1 and the right drum 2 are driven to rotate on the front transmission shaft 303, and the teeth of the front ring gear 301 shift the transmission chain 4 and drive the rear ring gear 201 and the rear transmission shaft 205 to rotate, thereby realizing cutting.

[0051] In another feasible method (not shown in the figure): the power source 02 is fixed to the outside of the cutting drum 01 and is located at one end of the cutting drum 01, and the rotating shaft of the power source 02 is connected to the connecting shaft of the cutting drum 01 through a coupling. When the rotating shaft rotates, the cutting drum 01 and the power source 02 body are driven to rotate together. However, considering that the distance of the coupling is relatively long in this setting, it will affect the transmission of the torque of the power source 02 and the stability of the equipment. The longer output shaft will increase flexibility and deflection, which may lead to loss of torque transmission and cause vibration or unstable operation under high load conditions. Try to avoid this situation in actual production.

[0052] Reference Figure 1-Figure 8In the third embodiment, a power source 02 is provided on the main frame 3 and in the cutting drum 01, that is, a front and rear dual drive is used to drive the cutting drum 01 to rotate. The combination can be: two power sources 02 are provided on the main frame 3, and one power source 02 is provided in the cutting drum 01, or two power sources 02 are provided on the main frame 3, and two power sources 02 are also provided in the cutting drum 01, that is, the first rear axle permanent magnet motor 5 and the second rear axle permanent magnet motor 6 are installed at both ends of the rear transmission shaft 205. At the same time, the first front axle permanent magnet motor 7 and the second front axle permanent magnet motor 8 are also installed inside the left drum 1 and the right drum 2 installed on the front transmission shaft 303, respectively, so that the rear gear ring 201 and the front gear ring 301 are both driving wheels, and have the function of driving four permanent magnet motors at the same time. When any one or two permanent magnet motors cannot work due to a fault, the cutting device does not lose its working ability due to the fault. The respective setting methods are consistent with those of the first and second embodiments.

[0053] The implementation principle of a new type of permanent magnet direct-drive motor chain drive cutting device for a mining machine in the embodiment of the present application is: a permanent magnet direct-drive motor chain drive roller is used to replace the traditional diesel engine transmission mechanism, which reduces harmful gas emissions and noise pollution and meets environmental protection requirements. At the same time, the efficient energy conversion characteristics of the all-electric permanent magnet direct-drive chain drive roller reduce energy consumption and improve the economic benefits of the mining machine. By changing the setting position and number of the power source 02, a permanent magnet direct-drive motor is set inside the cutting drum 01 to achieve direct drive of the cutting drum 01, reduce power transmission loss, and enable the cutting drum 01 to obtain greater work efficiency. When two permanent magnet direct-drive motors are set on the main frame 3 and inside the cutting drum 01, that is, the front and rear dual drive form, the output power of the cutting drum 01 is maximized, and the work efficiency of the cutting drum 01 is improved. The permanent magnet direct-drive motor chain drive roller has stable power output and efficient energy conversion efficiency, which improves the operating efficiency and stability of the mining machine. In addition, the all-electric permanent magnet direct-drive chain drive roller has a fast response speed, a large starting torque, and low noise, which can meet the real-time needs of the mining machine for the power system. Compared with traditional diesel engines, the permanent magnet direct drive motor chain drive roller has a simple structure and low maintenance cost, which reduces the operating cost of the mining machine. In addition, the permanent magnet direct drive motor has a simple structure, which greatly reduces the failure rate.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A new type of permanent magnet direct drive motor chain drive cutting device for mining machines, characterized in that: The invention comprises a main frame (3), a cutting drum (01), a power source (02) and a transmission structure connected between the cutting drum (01) and the power source (02); the transmission structure comprises a front transmission shaft (303), a rear transmission shaft (205) and a transmission chain (4) connected therebetween; the transmission chain (4) is connected to the cutting drum (01) and rotates synchronously; the power source (02) is used to directly or indirectly drive the cutting drum (01) to rotate; the power source (02) is an electric energy drive device including a permanent magnet direct drive motor.

2. The new type of permanent magnet direct drive motor chain drive cutting device for mining machine according to claim 1 is characterized in that: The power source (02) is arranged on the main frame (3), and two power sources (02) are arranged opposite to each other on both sides of the main frame (3). The rotation shafts of the two power sources (02) are connected to the rear transmission shaft (205) in the main frame (3).

3. The new type of permanent magnet direct drive motor chain drive cutting device for mining machines according to claim 1 is characterized in that: The interior of the cutting drum (01) is a hollow structure. The power source (02) is arranged inside the cutting drum (01) and is connected to the front transmission shaft (303) to directly drive the cutting drum (01) to rotate.

4. The new type of permanent magnet direct drive motor chain drive cutting device for mining machine according to claim 3 is characterized by: The cutting drum (01) includes two cutting drums arranged on the left and right sides of the transmission chain (4), the two cutting drums (01) are connected to the transmission chain (4) via the front transmission shaft (303), the power source (02) is arranged inside any one of the cutting drums (01), and the rotating shaft of the power source (02) is connected to the front transmission shaft (303).

5. The new type of permanent magnet direct drive motor chain drive cutting device for mining machine according to claim 3 is characterized by: One power source (02) is respectively arranged inside the two cutting drums (01), and the rotating shafts of the two power sources (02) are connected to the front transmission shaft (303).

6. The new type of permanent magnet direct drive motor chain drive cutting device for mining machine according to claim 1 is characterized by: The power source (02) is connected to the cutting drum (01), and the power source (02) is fixed outside the cutting drum (01). One or two power sources (02) are provided, and the rotating shaft of the power source (02) is connected to the front transmission shaft (303).

7. The new type of permanent magnet direct drive motor chain drive cutting device for mining machine according to claim 1 is characterized by: The power source (02) is disposed inside both the main frame (3) and the cutting drum (01), and two power sources (02) are disposed on the main frame (3), and one or two power sources (02) are disposed inside the cutting drum (01).

8. The new type of permanent magnet direct drive motor chain drive cutting device for mining machine according to any one of claims 1 to 7, characterized in that: The power source (02) is a permanent magnet direct drive motor or a hydraulic motor.

9. The new type of permanent magnet direct drive motor chain drive cutting device for mining machine according to claim 8 is characterized in that: When the permanent magnet direct drive motor is arranged inside the cutting drum (01), the rotor of the permanent magnet direct drive motor is fixed to the inner wall of the cutting drum (01), and the stator shaft of the permanent magnet direct drive motor is fixedly connected to the front transmission shaft (303).

10. The new type of permanent magnet direct drive motor chain drive cutting device for mining machine according to any one of claims 1 to 7, characterized in that: The transmission chain (4) and the outside of the cutting drum (01) are both welded with cutting teeth (9).

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