Variable-frequency speed-regulating multi-drive electric traction coal mining machine

Abstract

The utility model provides a variable frequency speed regulation multi-drive electric traction coal mining machine which comprises a plurality of cooling towers arranged at the two ends of a plurality of gear shafts of a rocker arm shell, the plurality of cooling towers are of trumpet-shaped spiral structures and are detachably connected to the shell through mounting seats, every two cooling towers are connected through a connecting pipe, and the connecting pipes are connected with the cooling towers. Two connecting seats are respectively arranged at two ends of the plurality of cooling towers, the two connecting seats are respectively and detachably connected to the shell through bolts, a return pipe is arranged between the two connecting seats, one end of the return pipe is communicated with the cooling towers through one connecting seat, the other end of the return pipe is connected to the other connecting seat, and one connecting seat is provided with a water inlet and a water outlet; the cooling cover area is increased, the cooling effect of parts such as a gear shaft and a gear is improved, and the structural design is simple and reasonable.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining machine technology, specifically relating to a variable frequency speed regulation multi-drive electric traction coal mining machine. Background Technology

[0002] Coal mining machines are mechanical equipment used in coal mining operations. During operation, the high speeds and large power transmission of gears and bearings within the gear transmission chamber lead to significant temperature rises in the gear chamber, generating substantial heat. This heat affects the lifespan of critical components such as gears, seals, and bearings, and also prevents the formation of an effective lubricating oil film, reducing lubrication and potentially causing damage to the transmission system and production stoppages. Commonly used cooling methods include... Figure 1 The water cooling system shown in the diagram is prone to cross-contamination. The small gap between the four cooling pipes results in a small coverage area and poor cooling effect, which in turn leads to a shorter service life for components such as gears and gear shafts.

[0003] In view of this, in order to solve the above problems, this utility model proposes a cooling device for the rocker arm housing of a coal mining machine that increases the cooling coverage area and improves the cooling effect of the gear shaft and gears. It has the characteristics of simple structural design and good cooling effect. Summary of the Invention

[0004] This utility model provides a variable frequency speed-regulating multi-drive electric traction coal mining machine to increase the cooling coverage area and improve the cooling effect of components such as gear shafts and gears. The specific solution is as follows:

[0005] A variable frequency speed-regulating multi-drive electric traction coal mining machine includes multiple cooling towers installed at both ends of multiple gear shafts on a rocker arm housing. The multiple cooling towers have a trumpet-shaped spiral structure. The multiple cooling towers are detachably connected to the housing via mounting seats. Each pair of cooling towers is connected by a connecting pipe. Each end of the multiple cooling towers is provided with two connecting seats. The two connecting seats are detachably connected to the housing by bolts. A return pipe is provided between the two connecting seats. One end of the return pipe is connected to a cooling tower via a connecting seat, and the other end is connected to the other connecting seat. A water inlet and a water outlet are provided on a connecting seat.

[0006] Furthermore, each cooling tower is provided with an annular exhaust pipe on the side away from the gear shaft, and the two annular exhaust pipes are connected by an air inlet pipe. Multiple exhaust holes are opened on the side of the multiple annular exhaust pipes near the cooling tower. A fan is provided on the shell, and the output end of the fan is connected to an air inlet pipe.

[0007] Furthermore, the annular exhaust pipe is detachably connected to the cooling tower via a fixing clip.

[0008] Furthermore, the larger end of the cooling tower faces the gear shaft.

[0009] Furthermore, the connecting pipes between the two cooling towers can be detachably connected via connectors.

[0010] The beneficial effects of this utility model are:

[0011] This utility model discloses a variable frequency speed regulation multi-drive electric traction coal mining machine. By forming a cooling return flow through the trumpet-shaped spiral structure cooling tower and return pipe at the ends of multiple gear shafts, as well as multiple annular exhaust pipes and exhaust fans, it not only increases the cooling area of ​​the gear shafts to achieve effective cooling, but also allows the multiple exhaust holes of the annular exhaust pipes to blow air onto the cooling tower when the fans are turned on. This allows the cold air from the cooling tower to be blown onto the gears through the annular exhaust pipes, further ensuring the normal temperature of the gears and improving the cooling effect of the gear shafts and other components. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure for cooling the shell through water channels.

[0013] Figure 2 This is a front sectional view of the present invention.

[0014] Figure 3 This is a partial structural diagram of the present invention.

[0015] Explanation of reference numerals in the attached drawings: 1. Cooling tower; 2. Connecting pipe; 3. Connecting seat; 4. Return pipe; 5. Water inlet; 6. Water outlet; 7. Circular exhaust pipe; 8. Air inlet pipe; 9. Mounting seat; 10. Connector. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] See Figure 1-3A variable frequency speed-regulating multi-drive electric traction coal mining machine includes multiple cooling towers 1 installed at both ends of multiple gear shafts on a rocker arm housing. The multiple cooling towers 1 have a trumpet-shaped spiral structure and are detachably connected to the housing via mounting bases 9. Each pair of cooling towers 1 is connected by a connecting pipe 2. Water enters from the smaller end of the trumpet shape and exits from the larger end. Each end of the multiple cooling towers 1 has two connecting seats 3, which are detachably connected to the housing via bolts. A return pipe 4 is provided between the two connecting seats 3, and the return flow... One end of the pipe 4 is connected to the cooling tower 1 through a connecting seat 3, and the other end is connected to another connecting seat 3. A cavity is opened on the connecting seat 3 to form a return cavity. The cooling tower 1 near the return cavity is connected through a connecting pipe 2. One end of the return pipe 4 is connected to the return cavity. A connecting seat 3 is provided with an inlet 5 and an outlet 6. Cooling water flows through the inlet to the connecting pipe 2 and the cooling tower 1, then flows through the return cavity to the return pipe 4, and is discharged from the outlet 6 to form a cooling water return flow, so as to keep the gear shaft and gears cool.

[0018] Each cooling tower 1 preferably has an annular exhaust pipe 7 on the side away from the gear shaft. The annular exhaust pipes 7 are connected to each other by an air inlet pipe 8. Multiple exhaust holes are opened on the side of the multiple annular exhaust pipes 7 near the cooling tower 1. A fan is installed on the shell, and the output end of the fan is connected to an air inlet pipe 8. By setting the annular exhaust pipes 7 and the fan, when the cooling tower 1 cools the gear shaft and gears, the fan can start and the air discharged from the annular exhaust pipes 7 through the exhaust holes can blow towards the cooling tower 1, so that the cold air generated by the cooling tower can be blown to the gear meshing part, further ensuring the cooling effect of the gear shaft and gears.

[0019] The preferred annular exhaust duct 7 is detachably connected to the cooling tower 1 via a fixing clip, which facilitates the effective fixing of the annular exhaust duct 7.

[0020] The larger end of the preferred cooling tower 1 faces the gear shaft.

[0021] The preferred connecting pipe 2 between two cooling towers 1 is detachably connected via connector 10.

[0022] The working principle of this utility model is as follows: During cooling, cooling water first enters through the inlet 5. At the same time, the fan is turned on so that several exhaust holes on the annular exhaust pipe 7 blow air into the cooling tower 1. The air enters the first cooling tower 1 through the connecting pipe 2. The cooling water enters the large end of the cooling tower 1 from the small end along the spiral pipe, and then enters the next cooling tower 1 through the connecting pipe 2. The cooling water then flows through the cooling chamber to the return pipe and is discharged from the outlet 6 to form a cooling cycle. During this process, the cooling tower 1 can cool the gear shaft in operation. The air blown out through the annular exhaust pipe 7 can blow the cold air generated by the cooling tower 1 to the meshing part of the gears to further ensure the cooling effect, thereby extending the service life of important parts such as gears, seals, and bearings.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A variable frequency speed-regulating multi-drive electric traction coal mining machine, characterized in that: The device includes multiple cooling towers (1) installed at both ends of multiple gear shafts on the rocker arm housing. The multiple cooling towers (1) have a horn-shaped spiral structure. The multiple cooling towers (1) are detachably connected to the housing via mounting bases (9). The cooling towers (1) are connected to each other via connecting pipes (2). Each end of the multiple cooling towers (1) is provided with two connecting seats (3). The two connecting seats (3) are detachably connected to the housing via bolts. A return pipe (4) is provided between the two connecting seats (3). One end of the return pipe (4) is connected to the cooling tower (1) via a connecting seat (3), and the other end is connected to another connecting seat (3). A water inlet (5) and a water outlet (6) are provided on a connecting seat (3).

2. The variable frequency speed-regulating multi-drive electric traction coal mining machine according to claim 1, characterized in that: Each cooling tower (1) is provided with an annular exhaust pipe (7) on the side away from the gear shaft. The two annular exhaust pipes (7) are connected by an air inlet pipe (8). Multiple exhaust holes are opened on the side of the multiple annular exhaust pipes (7) near the cooling tower (1). A fan is provided on the shell, and the output end of the fan is connected to an air inlet pipe (8).

3. A variable frequency speed-regulating multi-drive electric traction coal mining machine according to claim 2, characterized in that: The annular exhaust pipe (7) is detachably connected to the cooling tower (1) via a fixing clip.

4. The variable frequency speed-regulating multi-drive electric traction coal mining machine according to claim 1, characterized in that: The large end of the cooling tower (1) faces the gear shaft.

5. A variable frequency speed-regulating multi-drive electric traction coal mining machine according to claim 1, characterized in that: The connecting pipe (2) connecting the two cooling towers (1) is detachably connected via a connector (10).

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