CN216009411U

CN216009411U - Chain transmission mechanism and roof cutting drill carriage for coal mine

Info

Publication number: CN216009411U
Application number: CN202122640057.6U
Authority: CN
Inventors: 庄杰; 刘云林; 耿林祥
Original assignee: Hunan Wuheng Intelligent Equipment Co ltd
Current assignee: Hunan Wuheng Intelligent Equipment Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-11
Anticipated expiration: 2031-10-29

Abstract

The utility model relates to a chain drive mechanism and colliery are with cutting top drill carriage. Comprises a mounting rack, a driving chain wheel, a guide chain wheel and a transmission chain. The mounting frame comprises a first supporting piece, a second supporting piece and a fastening adjusting piece. The first supporting member is provided with a strip-shaped through hole along the lengthwise direction. The second support piece is provided with a connecting hole. The fastening adjusting piece penetrates through the long strip-shaped through hole and is detachably connected with the connecting hole. The driving chain wheel and the guiding chain wheel are respectively and rotatably arranged at one end of the first supporting piece far away from the second supporting piece and one end of the second supporting piece far away from the first supporting piece. The transmission chain is respectively meshed with the driving chain wheel and the guide chain wheel. Therefore, the distance between the driving chain wheel and the guide chain wheel can be adjusted by adjusting the position of the fastening adjusting piece in the elongated through hole, and the tightening of the transmission chain is further realized. Therefore, the arrangement of the chain transmission mechanism greatly simplifies and facilitates the tightening work of the transmission chain.

Description

Chain transmission mechanism and roof cutting drill carriage for coal mine

Technical Field

The utility model relates to a coal mine is with top-cutting drill carriage technical field, especially relates to a chain drive mechanism and coal mine are with top-cutting drill carriage.

Background

With the maturity, popularization and application of the coal mine roof cutting pressure relief automatic roadway and pillar-free mining technology, the roof cutting drill carriage is the equipment guarantee of the technology. In the top-cutting hole construction process, the drill rod rotates under the driving of a power head of the drilling machine and advances under the driving of an advancing driving mechanism. In the roof cutting drill carriage for the coal mine, in order to reduce the volume of the drill carriage, the forward driving mechanism mostly drives the power head of the drilling machine to move along the vertical direction through a chain transmission mechanism so as to drive the drill rod to move forward. In order to ensure the drilling effect, the transmission chain in the chain transmission mechanism needs to be tightened once every time the transmission chain is used for a period of time. In the traditional roof cutting drill carriage for coal mines, because the chain transmission mechanism is arranged in the drill boom mechanism, workers need to stretch hands into the drill boom mechanism to tighten the transmission chain, and the operation difficulty is high.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a chain transmission mechanism convenient to tighten and a roof cutting drill carriage for a coal mine, aiming at the problem that the tightening operation difficulty of the chain transmission mechanism in the traditional roof cutting drill carriage for the coal mine is high.

A chain transmission mechanism comprises a mounting frame, a driving chain wheel, a guide chain wheel and a transmission chain;

the mounting frame comprises a first supporting piece, a second supporting piece and a fastening adjusting piece; the first supporting piece and the second supporting piece are long strip-shaped structures with the same length direction; the first supporting piece is provided with a strip-shaped through hole along the lengthwise direction; the second supporting piece is provided with a connecting hole; the fastening adjusting piece is arranged in the elongated through hole in a penetrating mode and is detachably connected with the connecting hole;

the driving chain wheel and the guide chain wheel are respectively and rotatably arranged at one end of the first supporting piece far away from the second supporting piece and one end of the second supporting piece far away from the first supporting piece;

the transmission chain is provided with an installation part for installing a power head of the drilling machine; the transmission chain is respectively meshed with the driving chain wheel and the guide chain wheel.

In some embodiments, the fastening adjusting member, the elongated through hole and the connecting hole are all provided in plurality; the plurality of strip-shaped through holes are respectively in one-to-one correspondence with the plurality of connecting holes; the plurality of strip-shaped through holes are arranged at intervals along the length direction of the first supporting piece; the connecting holes are arranged at intervals along the length direction of the second support piece; the number of the fastening adjusting pieces is less than or equal to that of the elongated through holes; each fastening adjusting piece penetrates through the corresponding long-strip-shaped through hole and is detachably connected with the corresponding connecting hole.

In some of these embodiments, the fastening adjustment is a fastening bolt; the strip-shaped through hole is a waist circular hole; the connecting hole is a threaded hole; the fastening adjusting piece penetrates through the long strip-shaped through hole and is in threaded connection with the connecting hole.

In some embodiments, a sunken groove arranged along the circumferential direction of the elongated through hole is formed in the surface of one side of the first support piece, which is away from the connecting hole; one end, far away from the connecting hole, of the fastening adjusting piece is located in the sinking groove.

In some embodiments, a guide groove is formed on one side surface of the second support piece along the length direction of the second support piece; an opening at one end of the guide groove is positioned on the end surface of the second supporting piece facing one end of the driving chain wheel; the bottom of the guide groove is provided with the connecting hole; one end of the first supporting piece, which is far away from the driving chain wheel, is inserted into the guide groove.

In some embodiments, a surface of the first support member facing away from the connecting hole is flush with a surface of the second support member on which the guide groove is formed.

A roof cutting drill carriage for coal mines comprises a carriage body, a drill boom mechanism, the chain transmission mechanism, a drill power head and an advancing driving mechanism;

the drill boom mechanism is arranged at one end of the vehicle body; the second support piece is installed in the drill arm mechanism along the vertical direction; the drill power head is slidably arranged on the drill arm mechanism along the length direction of the first supporting piece and is in transmission connection with the mounting part;

the forward driving mechanism is in transmission connection with the driving chain wheel and is used for driving the driving chain wheel to rotate so as to drive the mounting part to move along the length direction of the first supporting part.

In some of these embodiments, the drive sprocket is located directly below the guide sprocket.

According to the chain transmission mechanism and the roof cutting drill carriage for the coal mine, the forward driving mechanism is in transmission connection with the power head of the drilling machine through the chain transmission mechanism and is used for driving the power head of the drilling machine to move up and down so as to facilitate construction of roof cutting holes. After the top-cutting drill carriage for the coal mine is used for a long time, when the transmission chain is loosened, a worker only needs to utilize tool bars such as a screwdriver and the like to send the fastening adjusting piece, then the first supporting piece is moved outwards to adjust the position of the fastening adjusting piece in the strip-shaped through hole, the adjustment of the distance between the driving chain wheel and the guide chain wheel is realized, and then the fastening adjusting piece is tightened, so that the tightening work of the transmission chain can be realized. Therefore, the arrangement of the chain transmission mechanism can greatly simplify and facilitate the tightening work of the transmission chain.

Drawings

Fig. 1 is a schematic structural view of a chain transmission mechanism according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of a first support member of the chain drive mechanism shown in FIG. 1;

fig. 3 is a schematic structural view of a second supporting member in the chain drive mechanism shown in fig. 1.

Description of reference numerals: 100. a chain transmission mechanism; 110. a mounting frame; 111. a first support member; 1111. a strip-shaped through hole; 1112. sinking a groove; 112. a second support member; 1121. connecting holes; 1122. a guide groove; 113. fastening an adjusting piece; 120. a drive sprocket; 130. a guide sprocket; 140. a drive chain; 141. an installation part.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present, unless otherwise specified. It will also be understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or one or more intervening elements may also be present.

Where the terms "comprising," "having," and "including" are used herein, another element may be added unless an explicit limitation is used, such as "only," "consisting of … …," etc. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.

Fig. 1 and 2 show a structure of a chain transmission mechanism according to an embodiment of the present invention. For the purpose of illustration, the drawings show only the structures associated with the embodiments of the invention.

Referring to fig. 1, the present invention provides a chain transmission mechanism 100 and a roof cutting drill carriage (not shown) for coal mine. The roof cutting drill carriage for coal mine includes a carriage (not shown), a boom mechanism (not shown), a chain transmission mechanism 100, a drill power head (not shown) and a forward driving mechanism (not shown).

The drill boom mechanism is arranged at one end of the vehicle body. The chain drive 100 is mounted in the boom mechanism. The drill power head is slidably mounted to the drill boom mechanism. The forward driving mechanism is in transmission connection with a power head of the drilling machine through a chain transmission mechanism 100. In practical use, a drill rod (not shown) is mounted on the power head of the drilling machine, the forward driving mechanism drives the power head of the drilling machine to drive the drill rod to move in the vertical direction through the chain transmission mechanism 100, and meanwhile, the power head of the drilling machine drives the drill rod to rotate, so that top hole cutting construction is achieved.

Referring to fig. 1, the chain transmission mechanism 100 according to the preferred embodiment of the present invention includes a mounting frame 110, a driving sprocket 120, a guiding sprocket 130 and a transmission chain 140.

Referring to fig. 1 and 2, the mounting frame 110 includes a first supporting member 111, a second supporting member 112 and a fastening adjusting member 113. The first supporting member 111 and the second supporting member 112 are long bar-shaped structures with the same length direction. The first supporting member 111 has a strip-shaped through hole 1111 along a longitudinal direction thereof. The second supporting member 112 has a connecting hole 1121. The fastening adjusting member 113 is disposed through the elongated through hole 1111 and detachably connected to the connecting hole 1121. The strip-shaped through hole 1111 may be a rectangular hole, a kidney-shaped hole, or the like. In the roof cutting drill rig for coal mines, the second support 112 is mounted on the boom mechanism in a vertical direction. When the roof cutting drill carriage for coal mine is located on the horizontal plane, the length direction of the first support 111 and the length direction of the second support 112 are both consistent with the vertical direction.

The driving sprocket 120 and the guiding sprocket 130 are rotatably mounted at one end of the first supporting member 111 far away from the second supporting member 112 and one end of the second supporting member 112 far away from the first supporting member 111, respectively. Thus, the driving sprocket 120 and the guide sprocket 130 are spaced apart from each other along the longitudinal direction of the first support 111.

The drive chain 140 has a mounting portion 141 for mounting a power head of a drilling machine. The driving chain 140 is engaged with the driving sprocket 120 and the guide sprocket 130, respectively. In the roof cutting drill carriage for coal mines, the power head of the drilling machine is mounted on the mounting part 141, and the forward driving mechanism is in transmission connection with the driving chain wheel 120.

In the practical use process, after the coal mine roof cutting drill carriage is used for a long time, if the transmission chain 140 is loosened, at this time, a worker loosens the fastening adjusting piece 113 by using a tool such as a screwdriver and the like, the first supporting piece 111 can be moved in the direction away from the guide chain wheel 130 to adjust the position of the fastening adjusting piece in the elongated through hole, and then the fastening adjusting piece 113 is tightened to realize the connection between the first supporting piece 111 and the second supporting piece 112, so that the distance between the driving chain wheel 120 and the guide chain wheel 130 is increased, and the transmission chain 140 can be tightened. Therefore, the arrangement of the chain transmission mechanism 100 can reduce the difficulty of tightening the transmission chain 140, and the tightening of the transmission chain 140 is simpler and more convenient.

In some embodiments, the drive sprocket 120 is located directly below the guide sprocket 130. Therefore, when the transmission chain 140 needs to be tightened, the distance between the driving sprocket 120 and the guide sprocket 130 can be increased only by moving the first supporting member 111 downward, so that the movement of the first supporting member 111 is more time-saving and labor-saving, and the difficulty in tightening the transmission chain 140 is further reduced.

In some embodiments, the fastening adjuster 113, the elongated through hole 1111 and the connection hole 1121 are all provided in plurality. The plurality of strip-shaped through holes 1111 respectively correspond to the plurality of connection holes 1121 one to one. A plurality of elongated through holes 1111 are disposed at intervals along the length direction of the first support 111. The plurality of connection holes 1121 are provided at intervals in a length direction of the second support 112. The number of the fastening adjusters 113 is less than or equal to the number of the elongated through holes 1111. Each fastening adjusting member 113 is inserted through the corresponding elongated through hole 1111 and detachably connected to the corresponding connecting hole 1121. Therefore, the first support 111 and the second support 112 are connected by the plurality of fastening adjusters 113 to achieve multi-point fixation, thereby improving the structural stability of the mounting bracket 110.

In some embodiments, the fastening adjuster 113 is a fastening bolt. The strip-shaped through hole 1111 is a waist circular hole. The connection hole 1121 is a threaded hole. The fastening adjusting member 113 is inserted into the elongated through hole 1111 and screwed with the connection hole 1121. When the fastening adjusting member 113 needs to be loosened or tightened, a worker only needs to screw the fastening adjusting member 113 by using a tool such as a screwdriver, so that the tightening work of the transmission chain 140 is simpler and more convenient.

In some embodiments, a surface of the first support 111 facing away from the connection hole 1121 is formed with a groove 1112 disposed along a circumference of the elongated through hole 1111. An end of the fastening adjustment member 113 away from the connection hole 1121 is located in the countersunk groove 1112. Therefore, when the fastening adjusting piece 113 is mounted on the first support 111 and the second support 112, one end of the fastening adjusting piece 113, which is far away from the connecting hole 1121, sinks in the sinking groove 1112, so as to avoid or reduce interference of the fastening adjusting piece 113 on other parts of the drill boom mechanism or other parts in the chain transmission mechanism 100, and thus the volume of the roof cutting drill carriage for coal mines is smaller.

In some embodiments, a side surface of the second supporting member 112 is formed with a guide groove 1122 along a length direction thereof. One end of the guide groove 1122 is open at an end surface of the second support 112 facing the end of the drive sprocket 120. The bottom of the guide groove 1122 is opened with a connecting hole 1121. An end of the first support 111 remote from the driving sprocket 120 is inserted into the guide groove 1122.

The arrangement of the guide groove 1122 not only facilitates the installation of the first support member 111 on the second support member 112, but also the guide groove 1122 guides the moving track of the second support member 112 in the length direction thereof, so as to ensure that the worker can move the second support member 112 in place quickly, thereby achieving the quick tightening of the transmission chain 140.

Further, in some embodiments, a surface of the first support 111 facing away from the connecting hole 1121 is flush with a surface of the second support 112 on which the guiding groove 1122 is formed. In this way, the end of the first support 111 completely away from the driving sprocket 120 can be completely sunk into the guide groove 1122, thereby reducing the volume of the mounting bracket 110 while ensuring the strength of the mounting bracket 110.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A chain transmission mechanism is characterized by comprising a mounting frame, a driving chain wheel, a guide chain wheel and a transmission chain;

2. The chain transmission mechanism according to claim 1, wherein the fastening adjusting member, the elongated through hole and the connecting hole are plural; the plurality of strip-shaped through holes are respectively in one-to-one correspondence with the plurality of connecting holes; the plurality of strip-shaped through holes are arranged at intervals along the length direction of the first supporting piece; the connecting holes are arranged at intervals along the length direction of the second support piece; the number of the fastening adjusting pieces is less than or equal to that of the elongated through holes; each fastening adjusting piece penetrates through the corresponding long-strip-shaped through hole and is detachably connected with the corresponding connecting hole.

3. The chain drive of claim 1, wherein the fastening adjustment is a fastening bolt; the strip-shaped through hole is a waist circular hole; the connecting hole is a threaded hole; the fastening adjusting piece penetrates through the long strip-shaped through hole and is in threaded connection with the connecting hole.

4. The chain transmission mechanism as claimed in claim 1, wherein a sinking groove is formed on a surface of one side of the first supporting member facing away from the connecting hole, the sinking groove being arranged along the circumferential direction of the elongated through hole; one end, far away from the connecting hole, of the fastening adjusting piece is located in the sinking groove.

5. The chain transmission mechanism as claimed in claim 1, wherein a guide groove is formed on a side surface of the second supporting member along a length direction thereof; an opening at one end of the guide groove is positioned on the end surface of the second supporting piece facing one end of the driving chain wheel; the bottom of the guide groove is provided with the connecting hole; one end of the first supporting piece, which is far away from the driving chain wheel, is inserted into the guide groove.

6. The chain transmission mechanism as claimed in claim 5, wherein the surface of the first supporting member facing away from the connecting hole is flush with the surface of the second supporting member facing away from the guiding groove.

7. A roof cutting drill carriage for coal mines, which is characterized by comprising a carriage body, a drill boom mechanism, a chain transmission mechanism according to any one of claims 1 to 6, a drill power head and a forward driving mechanism;

8. The mining roof cutting drill rig according to claim 7, wherein the drive sprocket is located directly below the guide sprocket.