Self-adaptive adjusting device for cutting part of coal mining machine
By introducing a torque sensor and an adaptive adjustment device for a dual-speed motor into the cutting section of the coal mining machine, combined with an air duct and cooling system, the problems of inflexible motor switching and poor heat dissipation were solved, achieving stable motor operation and efficient heat dissipation.
Patent Information
- Application Number
- CN202520499403.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-20
AI Technical Summary
The existing coal mining machine cutting section adjustment device relies on semi-automatic adjustment, the motor high and low speed switching is inflexible, and the heat dissipation effect is poor, which easily leads to failure.
By employing a torque sensor, reducer, and dual-speed cutting motor, combined with an air duct and cooling system within the protective housing, the motor status can be monitored in real time and high/low speed adaptive switching can be achieved. Effective heat dissipation and cooling are achieved through a fan and cooling pipes.
It enables real-time monitoring of motor status and adaptive switching between high and low speeds, improves motor heat dissipation efficiency, avoids malfunctions, and ensures stable operation of the coal mining machine.
Smart Images
Figure CN223724590U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of coal mining machine, especially to the self -adaptation adjusting device of coal mining machine cutting unit. BACKGROUND
[0002] Coal mining machine is one of the main equipment of fully mechanized mining complete equipment. Coal mining machine is evolved from coal cutter. Coal mining machine is a large complex system integrating machinery, electricity and hydraulic pressure, and its working environment is very bad. If a fault occurs, the whole coal mining work will be interrupted, causing huge economic losses.
[0003] Usually, the cutting unit here refers to a part of drum-type coal mining machine, and the power consumption is 80%-90% of the total power. Therefore, in order to ensure the normal operation of the cutting unit, a self-adaptive adjusting device is needed to meet the control of the motor operating speed during coal mining and tunneling. However, the existing adjusting device mostly relies on semi-automatic adjustment, and the monitoring data is relatively single. The high-low speed conversion of the motor is not flexible. In addition, the double-speed cutting motor is generally arranged in a simple protection structure. Continuous high-low speed operation will cause a large amount of heat dissipation, which cannot achieve good heat dissipation and easily cause faults. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a self-adaptive adjusting device for the cutting unit of a coal mining machine to solve the problems raised in the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a self-adaptive adjusting device for the cutting unit of a coal mining machine, comprising a coal mining machine main body, one end of the coal mining machine main body is provided with a cutting unit, a self-adaptive adjusting structure is arranged behind the cutting unit, the self-adaptive adjusting structure comprises a speed reducer and a double-speed cutting motor, a torque sensor is arranged between the speed reducer and the double-speed cutting motor, a protective shell is arranged outside the double-speed cutting motor, a plurality of inclined air ducts are arranged in the two side walls of the protective shell, an inclined plate is fixedly connected to one corner of the two side walls of the protective shell, and a fan is arranged in the middle of the inclined plate.
[0006] A water tank is arranged at the top of the protective shell, a water pump is arranged at the bottom of the water tank, a horizontal water pipe is fixedly connected to the inner wall of the top of the protective shell, and a plurality of vertical cooling pipes are fixedly connected to the two side walls of the horizontal water pipe.
[0007] As a preferred technical scheme of the utility model, the speed reducer and the torque sensor are arranged at one end of the coal mining machine main body close to the cutting unit, and the protective shell is arranged at one end of the coal mining machine main body close to the cutting unit.
[0008] As a preferred technical scheme of the utility model, the inner wall of the inclined air duct is clamped and connected with a filter screen, and an arc-shaped protective net is arranged on the back of the inclined plate.
[0009] As a preferred technical scheme of the utility model, two installation strips are fixedly embedded at one end of the protective shell, and a plurality of air outlet nozzles are fixedly embedded on the installation strips.
[0010] As a preferred technical scheme of the utility model, the water inlet of the water pump is fixedly connected with the bottom end of the water tank, and the water outlet of the water pump is fixedly connected with the top end of the horizontal water pipe.
[0011] As a preferred technical scheme of the utility model, a plurality of longitudinal cooling pipes are fixedly connected to the inner walls of the two sides of the protective shell.
[0012] As a preferred technical scheme of the utility model, the top end of the water tank is clampedly connected with a tank cover, a temperature sensor is installed at a corner in the water tank, and the temperature sensor and the water pump are electrically connected with the internal circuit of the coal mining machine body.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] 1、The utility model discloses a torque sensor, a speed reducer and a double-speed cutting motor are set up, the working state of the double-speed cutting motor can be monitored in real time, the self-adaptive conversion of high speed and low speed is realized, the inclined plate, the fan and the plurality of inclined air ducts are set up, the continuous directional airflow flow can be realized during the working of the double-speed cutting motor, the heat dissipation around the double-speed cutting motor is strengthened, and no impurities such as coal ash are brought in the process, and the working environment is guaranteed.
[0015] 2、The utility model discloses a water tank at the top of the protective shell, and the longitudinal cooling pipes that are arranged on the inner wall of the protective shell and surround the double-speed cutting motor, when the double-speed cutting motor is abnormally heated due to abnormal working, the double-speed cutting motor can be quickly and temporarily protected from high temperature, and the temperature sensor alarms the internal circuit of the coal mining machine body, and plays a temporary cooling effect before emergency stop. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a structure schematic view of the utility model;
[0017] Figure 2 It is a structure schematic view of the protective shell part of the utility model;
[0018] Figure 3 It is a structure schematic view of the arc-shaped protective net part of the utility model;
[0019] Figure 4 It is a structure schematic view of the longitudinal cooling pipe part of the utility model.
[0020] In the figure: 1, the main body of the coal mining machine; 2, the cutting part; 3, the speed reducer; 4, the torque sensor; 5, the protective shell; 6, the double-speed cutting motor; 7, the temperature sensor; 8, the inclined plate; 9, the fan; 10, the arc-shaped protective net; 11, the inclined air duct; 12, the mounting strip; 13, the air outlet; 14, the water tank; 15, the tank cover; 16, the water pump; 17, the horizontal water pipe; 18, the vertical cooling pipe. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.
[0022] Please refer to Figures 1 to 4 The utility model provides the technical scheme of the self-adaptive adjusting device of the cutting part of the coal mining machine.
[0023] Embodiment one
[0024] According to Figure 1 , Figure 2 and Figure 3 , the self-adaptive adjusting device of the cutting part of the coal mining machine comprises the main body of the coal mining machine 1, the cutting part 2 is installed at one end of the main body of the coal mining machine 1, the self-adaptive adjusting structure is installed at the rear of the cutting part 2, the self-adaptive adjusting structure comprises the speed reducer 3 and the double-speed cutting motor 6, the torque sensor 4 is installed between the speed reducer 3 and the double-speed cutting motor 6, the protective shell 5 is installed outside the double-speed cutting motor 6, a plurality of inclined air ducts 11 are formed in the two side walls of the protective shell 5, the inclined plate 8 is fixedly connected to one corner of the two side walls of the protective shell 5, and the fan 9 is installed in the middle of the inclined plate 8.
[0025] The speed reducer 3 and the torque sensor 4 are installed at one end of the main body of the coal mining machine 1 close to the cutting part 2, the protective shell 5 is installed at one end of the main body of the coal mining machine 1 close to the cutting part 2, the filter screen is clamped and connected to the inner wall of the inclined air duct 11, the arc-shaped protective net 10 is arranged on the back of the inclined plate 8, two mounting strips 12 are fixedly embedded in one end of the protective shell 5, and a plurality of air outlets 13 are fixedly embedded on the mounting strips 12.
[0026] In specific use, the self-adaptive adjusting device of the coal mining machine cutting part in the coal mining process of the coal mining machine, the torque sensor 4 monitors the load state of the double-speed cutting motor 6 at all times, when the double-speed cutting motor 6 works at low speed, the power value and the torque value are in an underload state, the internal circuit of the coal mining machine main body 1 controls the low-speed motor to be turned off and the high-speed motor to be turned on, when the double-speed cutting motor 6 works at high speed, the power value and the torque value are in an overload state, the internal circuit of the coal mining machine main body 1 controls the high-speed motor to be turned off and the low-speed motor to be turned on, realizing self-adaptive conversion of high and low speeds, during work, the double-speed cutting motor 6 continuously operates at high and low speeds, generates a large amount of heat, the two fans 9 on the two inclined plates 8 are in a continuously opened state, filtered gas is sucked in through the arc-shaped protective net 10, then is blown to the plurality of inclined air ducts 11, is accurately blown into the inside of the protective shell 5, and after the airflow flows through the inside of the entire protective shell 5, is discharged again through the plurality of air outlet nozzles 13 at one end of the protective shell 5, when the airflow enters the protective shell 5, is also filtered again through the filter screen in the inner wall of the inclined air duct 11, avoiding coal ash and impurities from entering the inside of the protective shell 5.
[0027] Embodiment two:
[0028] On the basis of embodiment one, as shown in Figure 1 and Figure 2 、 Figure 4 , the top end of the protective shell 5 is provided with a water tank 14, the bottom end of the water tank 14 is provided with a water pump 16, the top end inner wall of the protective shell 5 is fixedly connected with a transverse water pipe 17, the two side walls of the transverse water pipe 17 are fixedly connected with a plurality of longitudinal cooling pipes 18, the water inlet of the water pump 16 is fixedly connected with the bottom end of the water tank 14, the water outlet of the water pump 16 is fixedly connected with the top end of the transverse water pipe 17, the plurality of longitudinal cooling pipes 18 are fixedly connected with the two side inner walls of the protective shell 5, the top end of the water tank 14 is hingedly connected with a tank cover 15, one corner in the inside of the water tank 14 is provided with a temperature sensor 7, the temperature sensor 7 and the water pump 16 are electrically connected with the internal circuit of the coal mining machine main body 1.
[0029] In specific use, the self-adaptive adjusting device of the coal mining machine cutting part in the operation of the double-speed cutting motor 6, once the internal heat is released abnormally, the temperature sensor 7 is triggered, then the internal circuit controls the water pump 16 to operate, the water pump 16 sucks the water in the water tank 14 into the transverse water pipe 17, and then flows into the plurality of longitudinal cooling pipes 18, so that cooling protection is quickly formed around the double-speed cutting motor 6, the double-speed cutting motor 6 is temporarily protected from continuous high temperature, at the same time, the temperature sensor 7 alarms the internal circuit of the coal mining machine main body 1, before emergency stop, plays a temporary cooling effect.
[0030] In the description of the utility model, it is understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0031] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.
[0032] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, or the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0033] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. In the description of the specification, the description of reference terms "one scheme", "some schemes", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more schemes or examples in a suitable manner.
Claims
1. A self-adaptive adjusting device for a cutting unit of a coal mining machine, comprising a main body (1) of the coal mining machine, characterized in that: One end of the coal mining machine body (1) is provided with a cutting part (2), the rear of the cutting part (2) is provided with an adaptive adjusting structure, the adaptive adjusting structure comprises a speed reducer (3) and a double-speed cutting motor (6), a torque sensor (4) is installed between the speed reducer (3) and the double-speed cutting motor (6), a protective shell (5) is installed outside the double-speed cutting motor (6), a plurality of inclined air ducts (11) are formed in the two side walls of the protective shell (5), an inclined plate (8) is fixedly connected to one corner of the two side walls of the protective shell (5), and a fan (9) is installed in the middle of the inclined plate (8). A water tank (14) is installed at the top of the protective shell (5), a water pump (16) is installed at the bottom of the water tank (14), a horizontal water pipe (17) is fixedly connected to the inner wall of the top of the protective shell (5), and a plurality of longitudinal cooling pipes (18) are fixedly connected to the two side walls of the horizontal water pipe (17).
2. The shearer cutting unit self-adaptive adjusting device according to claim 1, characterized in that: The speed reducer (3) and the torque sensor (4) are installed at one end of the coal mining machine body (1) close to the cutting part (2), and the protective shell (5) is installed at one end of the coal mining machine body (1) close to the cutting part (2).
3. The shearer cutting unit adaptive adjustment device according to claim 1, characterized in that: The inner wall of the inclined air duct (11) is clamped and connected with a filter screen, and the back of the inclined plate (8) is covered with an arc-shaped protective net (10).
4. The shearer cutting unit adaptive adjustment device according to claim 1, characterized in that: Two mounting strips (12) are fixedly embedded at one end of the protective shell (5), and a plurality of air outlet nozzles (13) are fixedly embedded on the mounting strips (12).
5. The shearer cutting unit adaptive adjustment device according to claim 1, characterized in that: The water inlet of the water pump (16) is fixedly connected with the bottom of the water tank (14), and the water outlet of the water pump (16) is fixedly connected with the top of the horizontal water pipe (17).
6. The shearer cutting unit adaptive adjustment device according to claim 1, characterized in that: A plurality of longitudinal cooling pipes (18) are fixedly connected to the two inner walls of the protective shell (5).
7. The shearer cutting unit adaptive adjustment device according to claim 1, characterized in that: A tank cover (15) is clamped and connected to the top of the water tank (14), a temperature sensor (7) is installed at one corner of the inside of the water tank (14), and the temperature sensor (7) and the water pump (16) are electrically connected with the internal circuit of the coal mining machine body (1).