Mining electric operating mechanism

Abstract

The utility model relates to the technical field of electric operating mechanisms, in particular to a mining electric operating mechanism which comprises a motor, a transmission mechanism, a motor shell, a transmission shell, an end cover, a first connecting piece and a second connecting piece. The transmission shell and the end cover are detachably connected through the second connecting piece, and the first connecting piece and the second connecting piece are arranged in the radial direction of the transmission shell. According to the utility model, the first connecting piece and the second connecting piece are arranged along the radial direction of the transmission shell, so that the assembly clearance between the motor shell and the transmission shell and the assembly clearance between the transmission shell and the end cover are reduced on the basis that the appearances of the motor shell, the transmission shell and the end cover do not need to be changed; moisture is prevented from entering from the joints of the motor shell and the transmission shell and the joint of the transmission shell and the end cover, and the motor shell has high moisture resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of electric operating mechanisms, and more specifically, to a mine-used electric operating mechanism. Background Art

[0002] An electric operating mechanism refers to a mechanism that completes various operations on a controlled object under the action of an electric actuator. Generally, it includes electric actuators such as AC motors, DC motors, and stepping motors, as well as transmission mechanisms (such as gear pairs, chains, conveyor belts, etc.) and operation feedback components such as travel switches and encoders. According to different types of control signals, the electric operating mechanism can be divided into manual / automatic control type, direct control type, pulse control type, analog control type, etc. Due to the humid and hot underground environment in mines, the electric operating mechanism on the mine vehicle chassis needs to have high moisture-proof performance.

[0003] In the prior art, the fixing bolts of the electric operating mechanism are exposed. In the humid and hot underground environment of mines, moisture can enter the shell at the fixing bolts, easily leading to poor insulation of the motor. At the same time, axial fixing bolts are used to fix between the shells, increasing the overall size of the electric operating mechanism, and moisture is also likely to enter at the connection between the shells. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiency that moisture is likely to enter the shell in the prior art, and provide a mine-used electric operating mechanism with high moisture-proof performance.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] Provide a mine-used electric operating mechanism, including a motor, a transmission mechanism, a motor shell, a transmission shell, an end cover, a first connecting piece and a second connecting piece. The output end of the motor is connected to the transmission mechanism. The motor is installed and connected in the motor shell. The transmission mechanism is installed and connected in the transmission shell. The motor shell and the transmission shell are detachably connected through the first connecting piece. The transmission shell and the end cover are detachably connected through the second connecting piece. Both the first connecting piece and the second connecting piece are arranged along the radial direction of the transmission shell.

[0007] For the mine electric operating mechanism of the present utility model, during installation, the motor housing and the transmission housing are spliced, and the motor housing and the transmission housing are fastened through a first connecting member arranged radially along the transmission housing. On the basis of not changing the outer shapes of the motor housing and the transmission housing, the assembly gap between the motor housing and the transmission housing is reduced, preventing moisture from entering through the connection between the motor housing and the transmission housing. At the same time, the first connecting member is located inside the motor housing and the transmission housing, preventing moisture from entering through the first connecting member, and having high moisture-proof performance; the transmission housing and the end cover are spliced, and the transmission housing and the end cover are fastened through a second connecting member arranged radially along the transmission housing. On the basis of not changing the outer shapes of the transmission housing and the end cover, the assembly gap between the transmission housing and the end cover is reduced, preventing moisture from entering through the connection between the transmission housing and the end cover. At the same time, the second connecting member is located inside the transmission housing and the end cover, preventing moisture from entering through the second connecting member, and having high moisture-proof performance.

[0008] Further, a first sealing structure is provided between the motor housing and the transmission housing, and a second sealing structure is provided between the transmission housing and the end cover. By providing the first sealing structure and the second sealing structure, the moisture-proof performance of the electric operating mechanism is enhanced.

[0009] Further, the first sealing structure includes a first sealing ring, and the first sealing ring is installed and connected between the motor housing and the transmission housing. By providing the first sealing ring, moisture is prevented from entering through the connection between the motor housing and the transmission housing.

[0010] Further, it further includes a pressing assembly for pressing the first sealing ring. The first sealing ring is sleeved on the motor housing, and a first sealing groove for axially abutting against the first sealing ring along the transmission housing is provided on the transmission housing, and the pressing assembly is provided on the transmission housing. By providing the pressing assembly, the first sealing ring is tightly pressed, and the first sealing ring extends axially along the transmission housing, so that the first sealing ring forms an interference fit with both the transmission housing and the motor housing, further preventing moisture from entering through the connection between the motor housing and the transmission housing.

[0011] Further, the pressing assembly includes a transmission ring and a pressing block for pressing the first sealing ring. The first connecting member is set as a bolt, a threaded hole for connecting with the bolt is provided on the motor housing, the bolt is slidably connected with the transmission ring radially along the transmission housing, the transmission ring is rotatably connected inside the transmission housing, the transmission ring is threadedly connected with the pressing block, and the pressing block is slidably connected inside the transmission housing axially along the bolt. By providing the pressing block to tightly press the first sealing ring; by providing the transmission ring, the relative position of the bolt inside the transmission housing can be adjusted, so that the pressing degree of the pressing block on the first sealing ring can be adjusted.

[0012] Furthermore, the second sealing structure includes a first sealing portion, a second sealing portion, and a second sealing ring. The first sealing portion is provided on the transmission housing, the second sealing portion is provided on the end cover, and the second sealing ring is provided between the first sealing portion and the second sealing portion. By providing the second sealing ring, moisture is prevented from entering through the connection between the transmission housing and the end cover.

[0013] Furthermore, the second sealing portion is provided with a second sealing groove for installing the second sealing ring, and the inner diameter of the first sealing portion gradually increases from the transmission housing to the end cover. By providing the inclined first sealing portion, the first sealing portion squeezes the second sealing ring during installation to form an interference fit, improving the moisture-proof performance.

[0014] Furthermore, the outer diameter of the second sealing groove gradually increases from the transmission housing to the end cover. By providing the inclined second sealing groove, an interference fit is also formed between the second sealing groove and the second sealing ring, and the second sealing ring has a double-layer interference fit inside and outside, improving the moisture-proof performance.

[0015] Furthermore, the transmission mechanism includes a planetary gear reduction assembly, an output shaft, and a bearing. The planetary gear reduction assembly is installed and connected inside the transmission housing, and both ends of the planetary gear reduction assembly are respectively connected to the output end of the motor and the output shaft; the output shaft is coaxial with the output end of the motor and is rotatably connected to the end cover through the bearing. By providing the planetary gear reduction assembly and making the output shaft coaxial with the output end of the motor, the overall size of the transmission mechanism can be reduced, and at the same time, the reduction effect can be enhanced through the planetary gear reduction assembly.

[0016] Furthermore, a skeleton oil seal is provided between the output shaft and the end cover. The sealing performance of the electric operating mechanism is increased, making it more suitable for the environment of mine electrical equipment.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. For a mine electric operating mechanism of the present utility model, by radially arranging the first connecting member and the second connecting member along the transmission housing, on the basis of not changing the outer shapes of the motor housing, the transmission housing, and the end cover, the assembly gaps between the motor housing and the transmission housing and between the transmission housing and the end cover are reduced, preventing moisture from entering through the connections between the motor housing and the transmission housing and between the transmission housing and the end cover. At the same time, the first connecting member and the second connecting member are located inside the housing, preventing moisture from entering through the first connecting member and the second connecting member, and having high moisture-proof performance.

[0019] 2. A mine electric operating mechanism of the present utility model presses the first sealing ring through the setting of a pressing component, makes the first sealing ring extend axially, and enables the first sealing ring to form an interference fit with both the transmission housing and the motor housing, further preventing moisture from entering through the connection between the transmission housing and the motor housing.

[0020] 3. A mine electric operating mechanism of the present utility model presses the second sealing ring by the first sealing part which is inclined during installation to form an interference fit, improving the moisture-proof performance; meanwhile, by setting an inclined second sealing groove, the second sealing groove also forms an interference fit with the second sealing ring, and the double-layer interference fit of the second sealing ring improves the moisture-proof performance between the transmission housing and the end cover.

[0021] 4. A mine electric operating mechanism of the present utility model can reduce the overall size of the transmission mechanism by setting a planetary gear reduction component and making the output shaft coaxial with the output end of the motor, and can enhance the deceleration effect through the planetary gear reduction component at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of an electric operating mechanism in the prior art;

[0023] Figure 2 is a schematic structural diagram of the mine electric operating mechanism in Embodiment 1;

[0024] Figure 3 is a three-dimensional view of the mine electric operating mechanism in Embodiment 1;

[0025] Figure 4 is a schematic structural diagram of the mine electric operating mechanism in Embodiment 2;

[0026] Figure 5 is Figure 4 an enlarged structural view of part A in

[0027] Figure 6 is Figure 4 an enlarged structural view of part B in

[0028] Figure 7 is a schematic structural diagram of the planetary gear reduction component in the mine electric operating mechanism.

[0029] In the attached drawings: 100, electric motor; 200, transmission assembly; 300, electric motor housing; 400, transmission assembly housing; 500, box cover; 600, fixing bolt; 1, electric machine; 2, transmission mechanism; 201, planetary gear reduction assembly; 211, first planetary gear set; 212, second planetary gear set; 213, third planetary gear set; 202, output shaft; 203, bearing; 204, needle bearing; 3, electric machine housing; 301, threaded hole; 4, transmission housing; 401, first sealing groove; 5, end cover; 6, first connecting member; 7, second connecting member; 8, first sealing structure; 801, first sealing ring; 802, pressing assembly; 821, transmission ring; 822, pressing block; 9, second sealing structure; 901, first sealing portion; 902, second sealing portion; 921, second sealing groove; 903, second sealing ring; 10, skeleton oil seal. Detailed implementation manners

[0030] The present utility model will be further described below in conjunction with the detailed implementation manners. Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present utility model, some components in the attached drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0031] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] As Figure 1As shown in the figure, the existing electric operating mechanism includes a motor 100, a transmission component 200, a motor housing 300, a transmission component housing 400, a box cover 500, and fixing bolts 600. The output end of the motor 100 is connected to the transmission component 200. The motor 100 is installed and connected inside the motor housing 300. The transmission component 200 is installed inside the transmission component housing 400. The transmission component 200 adopts a traditional cylindrical gear transmission. The motor housing 300 and the transmission component housing 400 are detachably connected by exposed fixing bolts 600. The fixing bolts 600 are arranged along the axial direction of the transmission component housing 400. The transmission component housing 400 is connected to the box cover 500. In the humid underground environment of mines, moisture will enter the housing at the fixing bolts 600, which is likely to cause poor insulation of the motor. At the same time, the fixing bolts 600 are also easily eroded by moisture. At the same time, the motor housing 300 and the transmission component housing 400 are fixed by axial fixing bolts 600, which increases the overall size of the electric operating mechanism, and moisture is also likely to enter the connection between the motor housing 300 and the transmission component housing 400.

[0034] This embodiment is the first embodiment of a mine electric operating mechanism. As shown in Figure 1 and Figure 2 the figure, it includes a motor 1, a transmission mechanism 2, a motor housing 3, a transmission housing 4, an end cover 5, a first connecting piece 6, and a second connecting piece 7. The output end of the motor 1 is connected to the transmission mechanism 2. The motor 1 is installed and connected inside the motor housing 3. The transmission mechanism 2 is installed and connected inside the transmission housing 4. Both the motor housing 3 and the transmission housing 4 are sealed and waterproof housings. The surface of the entire electric operating mechanism is treated with painting, making the electric operating mechanism more suitable for the use environment of mine electrical equipment. The motor housing 3 and the transmission housing 4 are detachably connected by the first connecting piece 6. The transmission housing 4 and the end cover 5 are detachably connected by the second connecting piece 7. This detachable connection can be achieved through fasteners such as bolts, or through detachable connections such as threaded structures or clamping structures, enabling the motor 1 and the transmission mechanism 2 to be separated, thus facilitating maintenance. The first connecting piece 6 and the second connecting piece 7 are both arranged along the radial direction of the transmission housing 4. In this embodiment, the first connecting piece 6 and the second connecting piece 7 are preferably stainless steel 304 screws.

[0035] The working principle of the mine electric operating mechanism in this embodiment is as follows:

[0036] During installation, the motor housing 3 and the transmission housing 4 are spliced together, and the motor housing 3 and the transmission housing 4 are fastened by a first connecting member 6 arranged radially along the transmission housing 4. Without changing the outer shapes of the motor housing 3 and the transmission housing 4, the assembly gap between the motor housing 3 and the transmission housing 4 is reduced, preventing moisture from entering through the connection between the motor housing 3 and the transmission housing 4. At the same time, the first connecting member 6 is located inside the motor housing 3 and the transmission housing 4, preventing moisture from entering through the first connecting member 6, thus having high moisture-proof performance; the transmission housing 4 and the end cover 5 are spliced together, and the transmission housing 4 and the end cover 5 are fastened by a second connecting member 7 arranged radially along the transmission housing 4. Without changing the outer shapes of the transmission housing 4 and the end cover 5, the assembly gap between the transmission housing 4 and the end cover 5 is reduced, preventing moisture from entering through the connection between the transmission housing 4 and the end cover 5. At the same time, the second connecting member 7 is located inside the transmission housing 4 and the end cover 5, preventing moisture from entering through the second connecting member 7, thus having high moisture-proof performance.

[0037] Embodiment 2

[0038] A mine electric operating mechanism proposed in this embodiment, on the basis of Embodiment 1, in this embodiment, as Figure 3 shown, a first sealing structure 8 is provided between the motor housing 3 and the transmission housing 4, and a second sealing structure 9 is provided between the transmission housing 4 and the end cover 5. By providing the first sealing structure 8 and the second sealing structure 9, the moisture-proof performance of the electric operating mechanism is enhanced.

[0039] As Figure 4 shown, the first sealing structure 8 includes a first sealing ring 801, and the first sealing ring 801 is installed and connected between the motor housing 3 and the transmission housing 4. By providing the first sealing ring 801, moisture is prevented from entering through the connection between the transmission housing 4 and the motor housing 3.

[0040] As Figure 4 shown, it further includes a pressing assembly 802 for pressing the first sealing ring 801. The first sealing ring 801 is sleeved on the motor housing 3, and a first sealing groove 401 for axially abutting against the first sealing ring 801 along the transmission housing 4 is provided on the transmission housing 4, and the pressing assembly 802 is provided on the transmission housing 4. By providing the pressing assembly 802, the first sealing ring 801 is tightly pressed, enabling the first sealing ring 801 to extend axially along the transmission housing 4, so that the left and right side surfaces of the first sealing ring 801 form a transition fit with both the transmission housing 4 and the motor housing 3, further preventing moisture from entering through the connection between the transmission housing 4 and the motor housing 3.

[0041] As Figure 5As shown, the pressing assembly 802 includes a transmission ring 821 and a pressing block 822 for pressing the first sealing ring 801. The first connecting member 6 is a bolt, and the motor housing 3 is provided with a threaded hole 301 for connecting with the bolt. The bolt is slidably connected to the transmission ring 821 along the radial direction of the transmission housing 4. The transmission ring 821 is rotatably connected within the transmission housing 4. The transmission ring 821 is threadedly connected to the pressing block 822, and the pressing block 822 is slidably connected within the transmission housing 4 along the axial direction of the bolt. When connecting the motor housing 3 and the transmission housing 4 using the bolt, rotate the bolt. Since the bolt is slidably connected to the transmission ring 821 along the radial direction of the transmission housing 4 and the bolt is coaxially arranged with the transmission ring 821, in this embodiment, the bolt has a part of a smooth rod, and a first slider is provided on the smooth rod. A first chute is provided on the transmission ring 821 along the axis of the bolt, and the first slider is slidably installed in the first chute. When the bolt enters the threaded hole 301, it drives the transmission ring 821 to rotate, and at the same time, the first slider slides in the first chute, so as not to drive the transmission ring 821 to move along the axis of the bolt; since the axis of the thread between the transmission ring 821 and the pressing block 822 is parallel to the axis of the bolt, in this embodiment, a second slider is provided on the pressing block 822, and a second chute is provided within the transmission housing 4 along the axis of the bolt, and the second slider is slidably installed in the second chute. Therefore, the rotation of the transmission ring 821 can drive the pressing block 822 threadedly connected to the transmission ring 821 to slide along the axial direction of the bolt, that is, drive the second slider to slide in the second chute, and press the first sealing ring 801, so that the left and right sides of the first sealing ring 801 form an interference fit with both the transmission housing 4 and the motor housing 3.

[0042] By providing the pressing block 822 to press the first sealing ring 801, multiple groups of the pressing assembly 802 and the first connecting member 6 are provided along the circumference of the first sealing ring 801. The end of the pressing block 822 is circular arc-shaped, so that the pressing block 822 fits more closely with the first sealing ring 801. In this embodiment, it is preferably that adjacent two pressing blocks 822 can be abutted after being pressed down, and the first sealing ring 801 is completely pressed down by the pressing blocks 822 in a circle, which can further improve the sealing effect. By providing the transmission ring 821, the relative position of the bolt within the transmission housing 4 can be adjusted, and the length of the tail of the bolt protruding before installation can be adjusted, so as to be able to adjust the pressing degree of the pressing block 822 on the first sealing ring 801.

[0043] As Figure 4 and Figure 6 shown, the second sealing structure 9 includes a first sealing portion 901, a second sealing portion 902 and a second sealing ring 903. The first sealing portion 901 is provided on the transmission housing 4, the second sealing portion 902 is provided on the end cover 5, and the second sealing ring 903 is provided between the first sealing portion 901 and the second sealing portion 902. By providing the second sealing ring 903, moisture is prevented from entering from the connection between the transmission housing 4 and the end cover 5.

[0044] As Figure 6 shown, a second sealing groove 921 for installing a second sealing ring 903 is provided on the second sealing portion 902, and the inner diameter of the first sealing portion 901 gradually increases from the transmission housing 4 to the end cover 5. By providing the second sealing groove 921 to limit the position of the second sealing ring 903, excessive movement of the second sealing ring 903 during installation is avoided. By providing the inclined first sealing portion 901, the first sealing portion 901 squeezes the second sealing ring 903 during installation to form an interference fit, improving the moisture-proof performance.

[0045] As Figure 6 shown, the outer diameter of the second sealing groove 921 gradually increases from the transmission housing 4 to the end cover 5. By providing the inclined second sealing groove 921, an interference fit is also formed between the second sealing groove 921 and the second sealing ring 903, and the second sealing ring 903 has an inner and outer double-layer interference fit, improving the moisture-proof performance.

[0046] Embodiment III

[0047] A mine electric operating mechanism proposed in this embodiment, based on Embodiment I or Embodiment II, in this embodiment, as Figure 2 and Figure 4 shown, the transmission mechanism 2 includes a planetary gear reduction assembly 201, an output shaft 202 and a bearing 203. The planetary gear reduction assembly 201 is installed and connected inside the transmission housing 4, and both ends of the planetary gear reduction assembly 201 are respectively connected to the output end of the motor 1 and the output shaft 202; the output shaft 202 is coaxial with the output end of the motor 1 and is rotatably connected to the end cover 5 through the bearing 203. By providing the planetary gear reduction assembly 201 and making the output shaft 202 coaxial with the output end of the motor 1, rather than using the traditional cylindrical gear transmission, the motor 1 and the transmission mechanism 2 can be on a straight line, and the overall size of the transmission mechanism 2 can be reduced. At the same time, since the reduction range of the planetary gear is larger than that of the traditional cylindrical gear transmission, the planetary gear reduction assembly 201 can enhance the reduction effect, and the same reduction effect can also be achieved with fewer reduction stages. Thus, without affecting the reduction ratio and the performance of the motor, a smaller volume can be maintained and the efficiency of the electric operation is greatly improved, making it more energy-efficient. A skeleton oil seal 10 is provided between the output shaft 202 and the end cover 5. The skeleton oil seal 10 increases the sealing performance of the electric operating mechanism and is more suitable for the mine electrical environment. At the same time, in order to reduce the overall size of the transmission mechanism 2, a customized skeleton oil seal with a thickness of 2 mm is used. The skeleton oil seal 10 is located at the end of the end cover 5 far from the transmission housing 4, that is, at the boundary between the output shaft 202 inside the end cover 5 and the air.

[0048] As Figure 7As shown, the planetary gear reduction assembly 201 includes a first planetary gear set 211, a second planetary gear set 212, and a third planetary gear set 213 that are meshed and connected in sequence. The first planetary gear set 211 and the second planetary gear set 212 each include a planet carrier, a transmission gear provided on one side of the planet carrier, and three planetary gears provided on the other side of the planet carrier. The three planetary gears are evenly distributed around the circumference of the transmission gear. The third planetary gear set 213 includes a planet carrier and three planetary gears provided on the planet carrier. A needle roller bearing 204 is provided in the inner hole of the planetary gear reduction assembly 201. Figure 1 As shown, in this embodiment, it is preferred to install needle bearings 204 in the inner holes of the three planetary gears of the first planetary gear set 211, which can reduce noise and increase transmission efficiency.

[0049] The specific connection between motor 1 and planetary gear reduction assembly 201 is as follows: an output gear is provided at the output end of motor 1, meshing with the planetary gears of first planetary gear set 211; the planetary gears of second planetary gear set 212 meshing with the transmission gear of first planetary gear set 211; and the planetary gears of third planetary gear set 213 meshing with the transmission gear of second planetary gear set 212. Output shaft 202 is coaxial with and fixedly connected to the planet carrier of third planetary gear set 213. Output shaft 202 is coaxial with the output end of motor 1, and transmission housing 4 is provided with an internal gear meshing with the planetary gears. A sprocket can be mounted on output shaft 202, and a shaft retaining ring is installed to axially secure the sprocket, facilitating transmission connection between output shaft 202 and the operated mechanism.

[0050] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A mine electric operating mechanism, characterized in that, It includes a motor (1), a transmission mechanism (2), a motor housing (3), a transmission housing (4), an end cover (5), a first connecting member (6) and a second connecting member (7). The output end of the motor (1) is connected to the transmission mechanism (2). The motor (1) is installed and connected within the motor housing (3), and the transmission mechanism (2) is installed and connected within the transmission housing (4). The motor housing (3) and the transmission housing (4) are detachably connected by the first connecting member (6), and the transmission housing (4) and the end cover (5) are detachably connected by the second connecting member (7). Both the first connecting member (6) and the second connecting member (7) are arranged radially along the transmission housing (4).

2. The electric operating mechanism for mines according to claim 1, wherein A first sealing structure (8) is provided between the motor housing (3) and the transmission housing (4), and a second sealing structure (9) is provided between the transmission housing (4) and the end cover (5).

3. The mine electric operating mechanism according to claim 2, wherein, The first sealing structure (8) includes a first sealing ring (801), and the first sealing ring (801) is installed and connected between the motor housing (3) and the transmission housing (4).

4. The mine electric operating mechanism according to claim 3, characterized in that, It further includes a pressing assembly (802) for pressing the first sealing ring (801). The first sealing ring (801) is sleeved on the motor housing (3). A first sealing groove (401) for axially abutting against the first sealing ring (801) along the transmission housing (4) is provided on the transmission housing (4), and the pressing assembly (802) is arranged on the transmission housing (4).

5. The mine electric operating mechanism according to claim 4, wherein, The pressing assembly (802) includes a transmission ring (821) and a pressing block (822) for pressing the first sealing ring (801). The first connecting member (6) is set as a bolt, and a threaded hole (301) for connecting with the bolt is provided on the motor housing (3). The bolt is slidably connected to the transmission ring (821) radially along the transmission housing (4). The transmission ring (821) is rotatably connected within the transmission housing (4), the transmission ring (821) is threadedly connected to the pressing block (822), and the pressing block (822) is slidably connected within the transmission housing (4) axially along the bolt.

6. The electric operating mechanism for mining according to claim 2, characterized in that The second sealing structure (9) includes a first sealing portion (901), a second sealing portion (902) and a second sealing ring (903). The first sealing portion (901) is arranged on the transmission housing (4), the second sealing portion (902) is arranged on the end cover (5), and the second sealing ring (903) is arranged between the first sealing portion (901) and the second sealing portion (902).

7. The electric operating mechanism for mines according to claim 6, characterized in that, A second sealing groove (921) for installing the second sealing ring (903) is provided on the second sealing portion (902), and the inner diameter of the first sealing portion (901) gradually increases from the transmission housing (4) to the end cover (5).

8. The mine electric operating mechanism according to claim 7, wherein, The outer diameter of the second sealing groove (921) gradually increases from the transmission housing (4) to the end cover (5).

9. The mine electric operating mechanism according to any one of claims 1 to 8, characterized in that, The transmission mechanism (2) includes a planetary gear reduction assembly (201), an output shaft (202) and a bearing (203). The planetary gear reduction assembly (201) is installed and connected inside the transmission housing (4). The two ends of the planetary gear reduction assembly (201) are respectively connected to the output end of the motor (1) and the output shaft (202). The output shaft (202) is coaxial with the output end of the motor (1) and is rotatably connected to the end cover (5) through the bearing (203).

10. The mine electric operating mechanism according to claim 9, wherein, A skeleton oil seal (10) is provided between the output shaft (202) and the end cover (5).

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