CN219779711U - Explosion-proof flat cable lead-in device for coal mining machine and coal mining machine - Google Patents
Explosion-proof flat cable lead-in device for coal mining machine and coal mining machine Download PDFInfo
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- CN219779711U CN219779711U CN202320812234.0U CN202320812234U CN219779711U CN 219779711 U CN219779711 U CN 219779711U CN 202320812234 U CN202320812234 U CN 202320812234U CN 219779711 U CN219779711 U CN 219779711U
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- coal mining
- flat cable
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- mining machine
- elbow
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- 239000003245 coal Substances 0.000 title claims abstract description 79
- 238000005065 mining Methods 0.000 title claims abstract description 77
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 35
- 238000004880 explosion Methods 0.000 claims 3
- 230000001629 suppression Effects 0.000 claims 3
- 238000005452 bending Methods 0.000 description 8
- 230000006978 adaptation Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Abstract
The utility model discloses an explosion-proof flat cable lead-in device for a coal mining machine, which comprises: one end of the elbow is detachably connected with the explosion-proof electric cabinet of the coal mining machine, and the inner cavity of the elbow is communicated with a round cable inlet on the explosion-proof electric cabinet; the pressure plate structure is detachably connected with the other end of the elbow and is used for fixing the flat cable; and the sealing structure is arranged in the elbow and is used for tightly fitting the outer surface of the flat cable penetrating through the elbow. The explosion-proof flat cable lead-in device for the coal mining machine has a detachable structure with the explosion-proof electric cabinet of the coal mining machine, so that the existing circular explosion-proof lead-in port of the coal mining machine can lead in a circular cable or a flat cable, and protect the flat cable near the lead-in port, thereby realizing free switching between the circular cable and the flat cable according to the actual conditions of the upper and lower spaces of the working surface of the coal mining machine, enlarging the application field of the coal mining machine and greatly improving the coal mining efficiency; in addition, the utility model also provides a coal mining machine with the explosion-proof flat cable leading-in device.
Description
Technical Field
The utility model relates to the technical field of coal mining machine power transmission connectors, in particular to an explosion-proof flat cable lead-in device for a coal mining machine and the coal mining machine.
Background
The first coal mining machine in China formally opens a new chapter of the coal mining technology in China since 1963. Through years of development, the coal seam in China belongs to a thin coal seam and a medium coal seam, so that the industry has great demand for the thin coal seam. The electric traction thin seam shearer is produced in the period of 'eleventh five', and the shearer has the advantage of high coal mining advantage in China.
Because the working face of the thin coal seam mining machine is narrow and the mining height is low, and meanwhile, the machine also reciprocates left and right, the traditional round power supply cable used by the mining machine is bent and folded back and forth and is easy to wear and break, so that a flat cable (namely a cable with a flat square cross section) is adopted in the industry for replacement, the thickness of the flat cable with the same current-carrying capacity is nearly half smaller than the outer diameter of the traditional round cable, the bending radius of the round cable is generally 4 times the thickness of the round cable, and the bending radius of the round cable is 2.5 times the thickness of the round cable. When the upper and lower spaces of the working surface are relatively narrow, the flat cable can be more suitable for the condition of reciprocating bending and folding in the limited space, and the problem that a plurality of cables are damaged when the round cable is adopted in the prior art is truly solved by adopting the flat cable.
In order to introduce the flat cable, the prior art generally processes the introduction interface of the explosion-proof electric cabinet of the coal mining machine into a flat interface which is matched with the shape of the flat cable, thus the introduction interface of the explosion-proof electric cabinet of the coal mining machine needs to be reprocessed, and the production cost is increased; and, because flat cable thickness is less than round cable thickness for flat interface size is less than round interface size, therefore when space about the working face is relatively great and want to introduce round cable, can't introduce round cable through flat interface. Therefore, on the basis of not changing the structure of a circular cable lead-in interface (namely an explosion-proof lead-in port) of the original explosion-proof electric cabinet of the coal mining machine, the problem that needs to be solved by the research and development personnel in the field is solved.
Disclosure of Invention
The utility model aims to solve the problems, and provides the explosion-proof flat cable introducing device for the coal mining machine, which is of a detachable structure, so that the existing round explosion-proof introducing port of the explosion-proof electric cabinet of the coal mining machine can be used for introducing round cables and flat cables, and the flat cables at the introducing port can be protected, thereby switching between the round cables and the flat cables according to the actual conditions of the upper space and the lower space of the working surface of the coal mining machine, enlarging the application occasion of the coal mining machine and greatly improving the coal mining efficiency; in addition, the utility model also provides a coal mining machine with the explosion-proof flat cable leading-in device.
In order to achieve the above object of the present utility model, an aspect of the present utility model provides a flame-proof flat cable lead-in device for a coal mining machine, comprising: one end of the elbow is detachably connected with the explosion-proof electric cabinet of the coal mining machine, and the inner cavity of the elbow is communicated with a round cable inlet on the explosion-proof electric cabinet; the pressure plate structure is detachably connected with the other end of the elbow and is used for fixing the flat cable; and the sealing structure is arranged in the elbow and is used for tightly fitting the outer surface of the flat cable penetrating through the elbow.
Preferably, the elbow is flat square.
Preferably, the outer wall of the elbow, which is close to one end, is annularly provided with a first flange, and the first flange is connected with a screw hole arranged at the periphery of the cable inlet of the explosion-proof electric cabinet through a screw.
Preferably, the inner cavity of the elbow is a stepped flat square inner cavity, and the size of the inner cavity at one end of the elbow is smaller than that of the inner cavity at the other end of the elbow.
Preferably, the sealing structure comprises a sealing ring with a flat square shape.
Preferably, the sealing structure further comprises a flat washer which is arranged on at least one end face of the sealing ring and is in a flat square shape.
Preferably, the platen structure includes: the pressure plate is sleeved outside the flat cable, one end of the pressure plate is detachably connected with the other end of the elbow, and the side wall of the other end of the pressure plate is provided with an opening; and the pressing plate is detachably connected with the opening of the side wall at the other end of the pressing plate and is used for being matched with the pressing plate to fix the flat cable sleeved in the pressing plate.
Preferably, the two ends of the pressing plate are bent in the same direction relative to the middle of the pressing plate.
In addition, the utility model also provides a coal mining machine, which comprises the explosion-proof flat cable leading-in device for the coal mining machine.
Compared with the prior art, the explosion-proof flat cable lead-in device for the coal mining machine and the coal mining machine have the following beneficial effects:
1. the explosion-proof flat cable lead-in device for the coal mining machine is of an independent structure and is detachably arranged at the circular explosion-proof lead-in port of the explosion-proof electric cabinet of the coal mining machine, when the flat cable is required to be led in, the flat cable can be led in by using the original circular port of the explosion-proof electric cabinet of the coal mining machine, the flat cable is protected, and when the circular cable is required to be led in, the device can be dismantled, so that the purpose of freely switching the circular cable and the flat cable according to the actual conditions of the upper space and the lower space of the working face of the coal mining machine is realized, the application occasion of the coal mining machine is enlarged, and the coal mining efficiency is improved.
2. According to the explosion-proof flat cable lead-in device for the coal mining machine, one end of the elbow is detachably connected with the explosion-proof electric cabinet of the coal mining machine, so that the explosion-proof flat cable lead-in device is convenient to disassemble and assemble and high in assembly efficiency; the flat cable passes through the bending inner cavity of the elbow, the outer surface of the flat cable is protected through the elbow, and the flat cable is fastened in the elbow through the sealing structure, so that the flat cable is effectively prevented from shaking in the elbow and being worn and broken along with the reciprocating movement and bending of the cable in use, and the service life of the flat cable is greatly prolonged; in addition, the elbow has certain bent angle, guarantees the direction that flat cable got into coal-winning machine flame proof electric cabinet, makes flat cable bent angle orientation scope wider.
3. According to the explosion-proof flat cable lead-in device for the coal mining machine, the pressing plate in the pressing plate structure is detachably connected with the pressing plate, so that the flat cable positioned in the pressing plate can be fastened by the pressing plate and the pressing plate according to actual conditions, the flat cable is effectively prevented from swinging relative to the pressing plate structure and the elbow, the abrasion rate of the flat cable is reduced, and the use safety is improved.
The present utility model will be described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a front cross-sectional view of a flame-proof flat cable lead-in device for a coal mining machine of the present utility model;
FIG. 2 is a perspective view of the flame-proof flat cable lead-in device for the coal mining machine of the present utility model;
FIG. 3 is a perspective view of one view of the elbow of the present utility model;
FIG. 4 is a half cross-sectional view of the left side view of the elbow of the present utility model;
FIG. 5 is a cross-sectional view of one end of the elbow of the present utility model for connection to a circular interface of a shearer flameproof electric housing;
FIG. 6 is a schematic diagram of a sealing structure of the explosion-proof flat cable lead-in device for the coal mining machine;
FIG. 7 is a schematic view of a platen structure of the explosion-proof flat cable lead-in device for the coal mining machine;
FIG. 8 is a schematic view of a circular pressure plate flange surface of a flame-proof electric cabinet of the coal mining machine and a flame-proof circular hole of the flame-proof flat cable lead-in device for the coal mining machine.
Detailed Description
As shown in fig. 1 and fig. 2, which are respectively schematic views of different structures of the explosion-proof flat cable introduction device for a coal mining machine according to the present utility model, as can be seen from fig. 1 and fig. 2, the explosion-proof flat cable introduction device for a coal mining machine according to the present utility model includes: one end of the elbow 1 is detachably connected with the explosion-proof electric cabinet 7 of the coal mining machine, and the inner cavity of the elbow is communicated with a circular cable inlet 73 on the explosion-proof electric cabinet; the pressure plate structure 3 is detachably connected with the other end of the elbow and is used for fixing the flat cable; and the sealing structure 1 is arranged in the elbow and is used for tightly fitting the outer surface of the flat cable penetrating through the elbow.
The explosion-proof flat cable lead-in device for the coal mining machine is detachably arranged at the explosion-proof round interface of the explosion-proof electric cabinet of the coal mining machine, and when the flat cable is required to be led in, the device is arranged at the explosion-proof interface of the explosion-proof electric cabinet, so that the flat cable can be led in by using the original round interface of the explosion-proof electric cabinet of the coal mining machine and protected; when the round cable is required to be introduced, the device is not installed (or removed), and the round cable is directly introduced into the interface, so that the purpose of freely switching the round cable and the flat cable according to the actual conditions of the upper space and the lower space of the working face of the coal mining machine is realized, the application occasion of the coal mining machine is enlarged, and the coal mining efficiency is greatly improved.
Specifically, as shown in fig. 1-5, the elbow of the utility model adopts an elbow with a flat square external profile, namely, two ends of the elbow are arc-shaped surfaces with equal radius, two sides of the elbow are straight surfaces, the elbow is provided with a flat square inner cavity which is communicated with a cable leading-in interface of the explosion-proof electric cabinet and is used for a flat cable to pass through, and the profile of the flat square inner cavity is similar to the external profile of the elbow. The outer wall of the elbow close to one end (the end refers to the bottom end used for being connected with the explosion-proof electric cabinet) is annularly provided with a flat square annular first flange 12, a plurality of screw holes (see fig. 3, 3 screw holes respectively) are symmetrically formed in two sides of the first flange, the first flange is detachably mounted on a box body flange surface 71 (see fig. 1 and 8) of the explosion-proof electric cabinet 7, which is provided with a circular cable lead-in port 73, in a mode of penetrating one first screw 4 in each screw hole, and a plurality of flange screw holes matched with the screw holes on the first flange are correspondingly formed in the position corresponding to the box body flange surface 71 of the explosion-proof electric cabinet.
The other end of the elbow (the end is far away from the top end of the explosion-proof electric cabinet) is detachably connected with the pressure plate structure 3. For convenience of connection, a plurality of screw holes (see fig. 5) are formed in the top end surface of the elbow, and the platen structure is fixed to the top end surface of the elbow (may also be referred to as a top flange surface 13) through a plurality of second screws 5. As shown in fig. 1, fig. 4 and fig. 5, the inner cavity of the elbow is a stepped flat square inner cavity, and the size of the inner cavity of the bottom end of the elbow is smaller than that of the inner cavity of the top end of the elbow, namely, the inner wall of the inner cavity of the top end and the inner wall of the inner cavity of the bottom end form a concentric flat ring.
The part of the elbow between the bottom end and the first flange is a bottom explosion-proof part 11, correspondingly, an explosion-proof surface 72 is arranged in an introduction interface 73 of the explosion-proof electric cabinet of the coal mining machine, the explosion-proof surface is a step table in the introduction interface, and the explosion-proof part at the bottom of the elbow is inserted into the introduction interface 73 and is propped against the explosion-proof surface 72, so that the insertion depth of the elbow can be limited.
The inner cavity at the top end of the elbow is internally provided with a sealing structure, as shown in fig. 6, the sealing structure 2 comprises a flat sealing ring 22 with a flat square shape, and further comprises a flat gasket with a flat square shape, which is at least arranged at one end of the flat sealing ring, preferably, two ends of the flat sealing ring are respectively provided with a flat gasket, namely, a first flat gasket 21 and a second flat gasket 23, and the flat cable can pass through the inner holes of the flat sealing ring and the flat gasket. When designing, the inner wall 24 of flat sealing washer, flat packing ring equals and with flat cable outside dimension adaptation, surface dimension and elbow top inner end size adaptation to form cavity structure and closely laminate with flat cable surface jointly through flat sealing washer, flat packing ring, effectively prevent to rock in the elbow through the flat cable that the elbow top was introduced.
When the explosion-proof electric cabinet is designed, the bending angle of the elbow can be larger than 45 degrees, such as 60 degrees, so that the direction of a flat cable entering the top end of the elbow and a flat cable led out from the bottom end of the elbow can be changed, the direction of the flat cable entering the explosion-proof electric cabinet leading-in interface can be ensured, and the mounting positions of the first flange at the bottom end of the elbow and the flange surface of the explosion-proof electric cabinet can be changed as required, so that the bending angle of the flat cable is wider in orientation range. In design, an elbow with an adjustable bending angle can also be used.
Wherein, the top and the platen structure 3 of elbow can dismantle the connection, as shown in fig. 7, and the platen structure includes: a pressure plate 33 which is used for being sleeved outside the flat cable and one end (also called as a bottom end) of which is detachably connected with the top end flange surface 13 of the elbow, and a side wall of the other end (also called as a top end) of the pressure plate is opened; the pressing plate 34 is detachably connected with the opening of the side wall at the other end of the pressing plate and is used for being matched with the pressing plate to fix the flat cable sleeved in the pressing plate, the two ends of the pressing plate are bent in the same direction relative to the middle of the pressing plate to enable the pressing plate to form a concave shape, screw holes are respectively formed in the two ends of the pressing plate, corresponding screw holes are correspondingly formed in the corresponding position of the side wall at the top end of the pressing plate, when the pressing plate is assembled, the concave surface of the pressing plate faces the pressing plate, and the pressing plate is fastened on the pressing plate in a mode that a plurality of third screws 6 penetrate through the screw holes of the pressing plate and the screw holes of the pressing plate. When the flat cable is applied, the depth of the screw screwed into the pressure plate can be adjusted according to the requirement so as to be matched with the thickness of the flat cable, and the flat cable introduced through the pressure plate is prevented from shaking in the pressure plate.
The pressure plate is a stepped pressure plate, the bottom of the pressure plate is a flat square connecting part, the connecting part can be partially inserted into the inner cavity at the top end of the elbow, and the outer wall 31 of the connecting part is matched with the inner wall 14 of the inner cavity at the top end of the elbow in size during design, so that after assembly, the outer wall 31 of the connecting part can be tightly attached to the inner wall 14 of the elbow, and the bottom end surface of the connecting part abuts against a flat gasket of a sealing structure or has smaller space with the flat gasket.
The top of pressure disk is joined in marriage with the clamp plate and is located the part between bottom and the top and be pressure disk flange portion 32, the bilateral symmetry of pressure disk flange portion set up with the elbow top flange face 13 on screw position, the screw of size looks adaptation to be fixed in the elbow with the pressure disk through a plurality of second screws 5.
The utility model provides the explosion-proof flat cable lead-in device for the coal mining machine, and also provides the coal mining machine with the lead-in device. The cable lead-in opening on the explosion-proof electric cabinet of the coal mining machine is an explosion-proof lead-in opening arranged on the coal mining machine in the prior art, and the explosion-proof flat cable lead-in device for the coal mining machine can lead the flat cable into the explosion-proof lead-in opening.
Although the present utility model has been described in detail hereinabove, the present utility model is not limited thereto, and modifications may be made by those skilled in the art in light of the principles of the present utility model, and it is therefore intended that all such modifications as fall within the scope of the present utility model.
Claims (9)
1. The utility model provides a coal-winning machine is with flame proof flat cable lead-in device which characterized in that includes:
one end of the elbow is detachably connected with the explosion-proof electric cabinet of the coal mining machine, and the inner cavity of the elbow is communicated with a round cable inlet on the explosion-proof electric cabinet;
the pressure plate structure is detachably connected with the other end of the elbow and is used for fixing the flat cable;
and the sealing structure is arranged in the elbow and is used for tightly fitting the outer surface of the flat cable penetrating through the elbow.
2. The explosion suppression flat cable lead-in device for a coal mining machine according to claim 1, wherein the elbow is in a flat square shape.
3. The explosion-proof flat cable introduction device for the coal mining machine according to claim 1 or 2, wherein a first flange is annularly arranged on the outer wall of the elbow close to one end, and the first flange is connected with a screw hole arranged at the periphery of a cable introduction port of the explosion-proof electric cabinet through a screw.
4. A flame-proof flat cable lead-in device for a coal mining machine according to any one of claims 1 to 3, wherein the elbow inner cavity is a stepped flat square inner cavity, and the one end inner cavity size of the elbow is smaller than the other end inner cavity size thereof.
5. The explosion suppression flat cable lead-in device for a coal mining machine according to claim 1, wherein the sealing structure comprises a sealing ring with a flat square shape.
6. The explosion-proof flat cable introduction device for the coal mining machine according to claim 5, wherein the sealing structure further comprises a flat washer which is arranged on at least one end face of the sealing ring and is in a flat square shape.
7. The explosion suppression flat cable lead-in device for a coal mining machine according to any one of claims 1 to 6, wherein the platen structure includes:
the pressure plate is sleeved outside the flat cable, one end of the pressure plate is detachably connected with the other end of the elbow, and the side wall of the other end of the pressure plate is provided with an opening;
and the pressing plate is detachably connected with the opening of the side wall at the other end of the pressing plate and is used for being matched with the pressing plate to fix the flat cable sleeved in the pressing plate.
8. The explosion-proof flat cable lead-in device for the coal mining machine according to claim 7, wherein two ends of the pressing plate are bent in the same direction relative to the middle of the pressing plate.
9. A coal mining machine, characterized by comprising the explosion-proof flat cable lead-in device for the coal mining machine according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320812234.0U CN219779711U (en) | 2023-04-11 | 2023-04-11 | Explosion-proof flat cable lead-in device for coal mining machine and coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320812234.0U CN219779711U (en) | 2023-04-11 | 2023-04-11 | Explosion-proof flat cable lead-in device for coal mining machine and coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219779711U true CN219779711U (en) | 2023-09-29 |
Family
ID=88104819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320812234.0U Active CN219779711U (en) | 2023-04-11 | 2023-04-11 | Explosion-proof flat cable lead-in device for coal mining machine and coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219779711U (en) |
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2023
- 2023-04-11 CN CN202320812234.0U patent/CN219779711U/en active Active
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