Cooling device for rocker arm of coal shearer and coal shearer

Abstract

This invention discloses a cooling device for a rocker arm of a coal mining machine and the coal mining machine itself. The cooling device includes a connecting housing, an internal gear ring, a first guide hole, and a conduit. The connecting housing is connected to the rocker arm housing of the coal mining machine and is positioned near the transmission gear of the cutting section. The internal gear ring is located inside the connecting housing and forms a first water channel with the inner wall of the connecting housing. The first guide hole is located on the internal gear ring and communicates with the first water channel. The conduit communicates with the first guide hole and is connected to a circulation pump located outside the rocker arm housing. The circulation pump circulates cooling water between the first water channel, the first guide hole, and the conduit to cool the rocker arm of the coal mining machine. The cooling device provided by this invention achieves cooling of the transmission gear of the cutting section by providing a first guide hole on the internal gear ring that communicates with the conduit, thereby enabling the circulation pump connected to the conduit to circulate cooling water between the first water channel, the first guide hole, and the conduit.

Description

Technical Field

[0001] This invention belongs to the field of coal mining machine technology, specifically relating to a cooling device for the rocker arm of a coal mining machine and a coal mining machine. Background Technology

[0002] During prolonged operation, the transmission gears of the cutting section on the rocker arm of a coal mining machine generate a significant amount of heat, which is trapped within the cavity and difficult to dissipate. Current technologies typically employ natural cooling or internally perforated cooling water channels to cool the rocker arm. However, natural cooling, with prolonged use, can cause the internal temperature of the gearbox to rise, leading to poor lubrication and consequently affecting the lifespan of the transmission gears. Internally perforated cooling water channels not only increase the machining workload of the rocker arm but also weaken the strength of the rocker arm shaft and housing, and are difficult to maintain.

[0003] It is difficult to install perforated water channels or cooling pipes on the cutting section of the rocker arm housing of a coal mining machine. Drilling holes in the housing would weaken its strength. Furthermore, machining long and narrow cooling pipe holes not only limits the cooling area of ​​the rocker arm, but also damages the cooling pipes when they come into contact with the coal wall during operation, since the cooling pipes are installed outside the coal mining machine housing. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a cooling device for the rocker arm of a coal mining machine and a coal mining machine, so as to solve the problem of cooling the transmission gear of the cutting part on the rocker arm of the coal mining machine.

[0005] The present invention provides a cooling device for a rocker arm of a coal mining machine, comprising:

[0006] The connecting housing is connected to the rocker arm housing of the coal mining machine and is located near the transmission gear of the cutting section;

[0007] An internal gear ring is located inside the connecting housing and forms a first water channel with the inner wall of the connecting housing;

[0008] The first guide hole is provided on the internal gear ring and is connected to the first water channel;

[0009] A conduit is connected to the first guide hole and to a circulation pump located outside the rocker arm housing. The circulation pump circulates cooling water between the first water channel, the first guide hole and the conduit to cool the rocker arm of the coal mining machine.

[0010] Furthermore, the connecting housing is detachably connected to the rocker arm housing via a fastening assembly.

[0011] Furthermore, the outer wall surface of the internal gear ring is provided with labyrinth grooves, and after the internal gear ring is installed on the connecting housing, the labyrinth grooves and the inner wall of the connecting housing form a labyrinth-like waterway.

[0012] Furthermore, the labyrinth groove includes a plurality of annular grooves sequentially arranged on the outer wall of the internal gear ring, and a first through hole located between two adjacent annular grooves. The first through hole is used to connect two adjacent annular grooves so that cooling water can flow between the plurality of annular grooves.

[0013] Furthermore, the rocker arm housing is also provided with a second water channel, which is located below the first water channel and communicates with the first water channel.

[0014] Furthermore, the second waterway is formed by the inner wall of the rocker arm housing and a fixed seat located inside the rocker arm housing, and the fixed seat is provided with a second guide hole communicating with the first guide hole, and the second guide hole is also connected to the conduit.

[0015] Furthermore, the length direction of the first guide hole is consistent with the length direction of the internal gear ring, and the internal gear ring is provided with a second through hole that connects the first water channel with the guide hole; the length direction of the second guide hole is the same as the length direction of the first guide hole.

[0016] Furthermore, the internal gear ring is provided with a connecting pin that can be detachably connected to the fixed seat, and the connecting pin is provided with a sealing ring.

[0017] Furthermore, the top of the internal gear ring is detachably connected to a bearing housing for mounting the cutting section drive gear, and the bearing housing can also seal the first waterway.

[0018] Another aspect of the present invention provides a coal mining machine, including a cooling device for the rocker arm of the coal mining machine as described above.

[0019] The present invention provides a cooling device for a rocker arm of a coal mining machine and a coal mining machine. By connecting a connecting housing to a rocker arm housing and forming a first water channel with an internal gear ring and the connecting housing, and by setting a first guide hole on the internal gear ring that communicates with a guide pipe, the first water channel, the first guide hole and the guide pipe are connected. In this way, a circulation pump connected to the guide pipe circulates cooling water between the first water channel, the first guide hole and the guide pipe, thereby cooling the cutting part transmission gear on the rocker arm of the coal mining machine.

[0020] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0021] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 A schematic diagram of a cooling device for a rocker arm of a coal mining machine, which is an exemplary embodiment of the present invention;

[0024] Figure 2 A perspective view of a coal mining machine rocker arm, which is an exemplary embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a cooling device for a coal mining machine rocker arm, which is an exemplary embodiment of the present invention.

[0026] In the picture:

[0027] 1-Connecting housing;

[0028] 2-Internal gear ring, 201-Annular groove, 202-Second through hole;

[0029] 3-First guide hole;

[0030] 4-Connecting pin;

[0031] 5- Rocker arm housing;

[0032] 6-First Waterway;

[0033] 7-Second Waterway;

[0034] 8-Fixed base;

[0035] 9-Second guide hole;

[0036] 10 - Third guide hole;

[0037] 11-Fourth guide hole;

[0038] 12-Bearing housing. Detailed Implementation

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0043] The present invention provides a cooling device for a rocker arm of a coal mining machine, comprising a connecting housing 1, an internal gear ring 2, a first guide hole 3, and a conduit 4. The connecting housing 1 is connected to the rocker arm housing 5 of the coal mining machine and is located near the cutting section transmission gear. The internal gear ring 2 is located inside the connecting housing 1 and forms a first water channel 6 with the inner wall of the connecting housing 1. The first guide hole 3 is provided on the internal gear ring 2 and communicates with the first water channel 6. The conduit 4 communicates with the first guide hole 3 and is connected to a circulation pump located outside the rocker arm housing 5. The circulation pump circulates cooling water between the first water channel 6, the first guide hole 3, and the conduit 4, thereby cooling the cutting section transmission gear on the rocker arm of the coal mining machine.

[0044] By connecting the connecting housing 1 to the rocker arm housing 5, and forming a first water channel 6 with the internal gear ring 2 and the connecting housing 1, and by setting a first guide hole 3 on the internal gear ring 2 that communicates with the conduit 4, the first water channel 6, the first guide hole 3 and the conduit 4 are connected, thereby enabling the circulating pump connected to the conduit 4 to circulate cooling water between the first water channel 6, the first guide hole 3 and the conduit 4, so as to cool the cutting part transmission gear on the rocker arm of the coal mining machine.

[0045] In a preferred embodiment, the connecting housing 1 is detachably connected to the rocker arm housing 5 via a fastening assembly. In this embodiment, the fastening assembly is preferably a bolt assembly. By using the bolt assembly to detachably connect the connecting housing 1 and the rocker arm housing 5, a flexible connection between the connecting housing 1 and the rocker arm housing 5 can be achieved, facilitating the installation, disassembly, and maintenance of the cooling device on the rocker arm of the coal mining machine.

[0046] In a preferred embodiment, the outer wall surface of the internal gear ring 2 is provided with labyrinth grooves, and after the internal gear ring 2 is installed on the connecting housing 1, the labyrinth grooves and the inner wall of the connecting housing 1 form a labyrinth-like water channel. In this embodiment, the labyrinth-like water channel formed by the labyrinth grooves on the outer wall of the internal gear ring 2 and the inner wall of the connecting housing 1 results in a first water channel 6 distributed at the contact position between the internal gear ring 2 and the connecting housing 1, thereby increasing the water cooling area of ​​the first water channel 6 and improving the cooling effect of the cooling device on the rocker arm of the coal mining machine.

[0047] In a preferred embodiment, the labyrinth groove includes a plurality of annular grooves 201 sequentially arranged on the outer wall of the internal gear ring 2, and a first through hole located between two adjacent annular grooves 201. The first through hole is used to connect two adjacent annular grooves 201, allowing cooling water to flow between the plurality of annular grooves 201. In this embodiment, by sequentially providing a plurality of annular grooves 201 on the outer wall of the internal gear ring 2 and connecting the plurality of annular grooves 201 to each other through the through hole, after the internal gear ring 2 is installed on the connecting housing 1, the water channel formed by two adjacent annular grooves 201 and the inner wall of the connecting housing is connected through the through hole, thereby enabling cooling water to flow between the plurality of annular grooves 201, and reaching the first water channel 6. Furthermore, since the labyrinth groove can be completed simply by sequentially machining the annular grooves 201 on the outer wall of the internal gear ring 2, the preferred configuration of the labyrinth groove as a plurality of annular grooves 201 sequentially arranged on the outer wall of the internal gear ring 2 simplifies the machining of the labyrinth groove, thereby improving the machining efficiency of the labyrinth groove.

[0048] In a preferred embodiment, the rocker arm housing 5 is further provided with a second water channel 7, which is located below and connected to the first water channel 6. In this embodiment, the second water channel 7 is preferably a labyrinthine water channel, which distributes the second water channel 7 on the inner wall of the rocker arm housing 5, increasing the water cooling area of ​​the second water channel 7, thereby improving the cooling effect of the cooling device of the coal mining machine rocker arm on the rocker arm.

[0049] Specifically, the second water channel 7 is formed by the inner wall of the rocker arm housing 5 and the fixed seat 8 located inside the rocker arm housing 5. The fixed seat 8 is provided with a second guide hole 9 that communicates with the first guide hole 3, and the second guide hole 9 is also connected to the conduit 4. In this embodiment, the outer wall of the fixed seat 8 is provided with a labyrinth groove similar to the internal gear ring 2, that is, multiple annular grooves 201 are provided on the outer wall of the fixed seat 8, and through holes are provided between two adjacent annular grooves 201, so that a labyrinth-like water channel is formed between the rocker arm housing 5 and the rocker arm housing 5, thereby increasing the water cooling area of ​​the rocker arm; and by providing a second guide hole 9 that communicates with the first guide hole 3 in the fixed seat 8, not only can the interior of the fixed seat 8 be water-cooled, but the second guide hole 9 can also be easily connected to the conduit 4, thereby realizing the communication between the first guide hole 3 and the conduit 4.

[0050] In this embodiment, the length direction of the first guide hole 3 is consistent with the length direction of the internal gear ring 2, and the internal gear ring 2 is provided with a second through hole 202 that connects the first water channel 6 to the guide hole; the length direction of the second guide hole 9 is the same as the length direction of the first guide hole 3. In this embodiment, the length direction of the first guide hole 3 is consistent with the length direction of the internal gear ring 2, thus keeping the first guide hole 3 parallel to the sidewall of the internal gear ring 2. The fixing base 8 is also provided with a third guide hole 10 and a fourth guide hole 11. The third guide hole 10 is located below the second guide hole 9 and perpendicular to the second guide hole 9, and the fourth guide hole 11 communicates with the third guide hole 10 and is parallel to the second guide hole 9. Furthermore, since the length direction of the second guide hole 9 is the same as the length direction of the first guide hole 3, the second guide hole 9 is also parallel to the first guide hole 3 and the sidewall of the internal gear ring 2.

[0051] In a preferred embodiment, the internal gear ring 2 is provided with a connecting pin that can be detachably connected to the fixed base 8, and the connecting pin is provided with a sealing ring. In this embodiment, by preferably connecting the internal gear ring 2 and the fixed base 8 in a detachable manner, a flexible connection between the internal gear ring 2 and the fixed base 8 can be achieved, thereby facilitating the installation and disassembly of the cooling device.

[0052] In a preferred embodiment, the top of the internal gear ring 2 is detachably connected to the bearing housing 12 for mounting the cutting section drive gear. The bearing housing 12 can also seal the first water channel 6, thereby making the first water channel 6 a sealed water channel. Preferably, the internal gear ring 2 is connected to the top of the internal gear ring 2 via a connecting pin 4.

[0053] Another aspect of the present invention provides a coal mining machine, including a cooling device for the rocker arm of the coal mining machine as described above.

[0054] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A cooling device for a rocker arm of a coal mining machine, characterized in that, include: The connecting housing (1) is connected to the rocker arm housing (5) of the coal mining machine and is located near the transmission gear of the cutting section; The internal gear ring (2) is located inside the connecting housing (1) and forms a first water channel (6) with the inner wall of the connecting housing (1); The first guide hole (3) is provided on the inner tooth ring (2) and is connected to the first water channel (6); The conduit (4) is connected to the first guide hole (3) and to a circulation pump located outside the rocker arm housing (5). The circulation pump causes cooling water to circulate between the first water channel (6), the first guide hole (3) and the conduit (4) to cool the rocker arm of the coal mining machine. The outer wall surface of the internal gear ring (2) is provided with labyrinth grooves, and after the internal gear ring (2) is installed on the connecting housing (1), the labyrinth grooves and the inner wall of the connecting housing (1) form a labyrinth-type waterway; The labyrinth groove includes a plurality of annular grooves (201) arranged sequentially on the outer wall of the internal gear ring (2), and a first through hole located between two adjacent annular grooves (201). The first through hole is used to connect two adjacent annular grooves (201) so that cooling water can flow between the plurality of annular grooves (201).

2. The cooling device for the rocker arm of a coal mining machine according to claim 1, characterized in that, The connecting housing (1) is detachably connected to the rocker arm housing (5) via a fastening assembly.

3. The cooling device for the rocker arm of a coal mining machine according to claim 1, characterized in that, The rocker arm housing (5) is also provided with a second water channel (7), which is located below the first water channel (6) and communicates with the first water channel (6).

4. The cooling device for the rocker arm of a coal mining machine according to claim 3, characterized in that, The second waterway (7) is formed by the inner wall of the rocker arm housing (5) and the fixed seat (8) located inside the rocker arm housing (5), and the fixed seat (8) is provided with a second guide hole (9) communicating with the first guide hole (3), and the second guide hole (9) is also connected to the conduit (4).

5. The cooling device for the rocker arm of a coal mining machine according to claim 4, characterized in that, The length direction of the first guide hole (3) is consistent with the length direction of the internal gear ring (2), and the internal gear ring (2) is provided with a second through hole (202) that connects the first water channel (6) with the guide hole; the length direction of the second guide hole (9) is the same as the length direction of the first guide hole (3).

6. The cooling device for the rocker arm of a coal mining machine according to claim 4, characterized in that, The internal gear ring (2) is provided with a connecting pin that can be detachably connected to the fixed seat (8), and the connecting pin is provided with a sealing ring.

7. The cooling device for a coal mining machine rocker arm according to any one of claims 1 to 6, characterized in that, The internal gear ring (2) is detachably connected to the top of the bearing housing (12) for mounting the transmission gear of the cutting section, and the bearing housing (12) can also seal the first waterway (6).

8. A coal mining machine, characterized in that, Includes a cooling device for a coal mining machine rocker arm as described in any one of claims 1 to 7.

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