CN111236938A - Coal mining machine cable protection plate and coal mining machine cable protection plate installation structure - Google Patents
Coal mining machine cable protection plate and coal mining machine cable protection plate installation structure Download PDFInfo
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- CN111236938A CN111236938A CN202010188584.5A CN202010188584A CN111236938A CN 111236938 A CN111236938 A CN 111236938A CN 202010188584 A CN202010188584 A CN 202010188584A CN 111236938 A CN111236938 A CN 111236938A
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- mining machine
- cable protection
- protection plate
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- 239000003245 coal Substances 0.000 title claims abstract description 109
- 238000005065 mining Methods 0.000 title claims abstract description 109
- 238000009434 installation Methods 0.000 title abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000008602 contraction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/04—Safety devices
- E21C35/046—Protection of cables or pipes for supplying power
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
- H02G11/006—Arrangements of electric cables or lines between relatively-movable parts using extensible carrier for the cable, e.g. self-coiling spring
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a coal mining machine cable protection board and a coal mining machine cable protection board installation structure, wherein the coal mining machine cable protection board comprises a first protection board, a second protection board assembly and a third protection board which are sequentially hinged, the second protection board assembly is formed by sequentially hinging a plurality of second sub-protection boards end to end, hinge axes between the boards are parallel to each other, and the second protection board assembly is in a zigzag folding shape when being contracted; the installation structure of the coal mining machine cable protection plate comprises a coal mining machine and the coal mining machine cable protection plate, wherein the first protection plate is fixed at the upper part of a rocker arm of the coal mining machine close to a machine body, the third protection plate is placed on the top surface of the machine body of the coal mining machine, and all hinge axes on the coal mining machine cable protection plate are parallel to the swing axis of the rocker arm of the coal mining machine relative to the machine body of the coal mining machine. The invention can well protect the cutting cable and is not influenced by the lifting of the rocker arm no matter the space is occupied or limited by a top guard plate or other devices above the machine face of the coal mining machine.
Description
Technical Field
The invention relates to a cable protection plate for a coal mining machine and an installation structure of the protection plate on the coal mining machine, wherein the protection plate is particularly suitable for the situation that a top protection plate or other devices exist on the machine face of the coal mining machine with a large mining height.
Background
The underground working face environment is complex, the condition that large coal caving frequently occurs at the neutral position between the hydraulic supports, the cutting cable of the coal mining machine is led to the rocker arm cutting motor by the electric cabinet, a section of cable is left to be exposed outside between the rocker arm and the traction box, if not protected, the cutting cable is easily smashed by the large coal caving on the working face top plate or extruded by the large coal, so that the cutting motor can not supply power, and the stope is caused.
Especially when the top surface of the machine body is provided with a top guard plate or other devices, the cutting cable protection device occupies a large amount of space above the top surface of the machine body, and the difficulty is increased for arranging the cutting cable protection device.
Disclosure of Invention
The invention aims to provide a coal cutter cable protection plate and a coal cutter cable protection plate mounting structure, wherein the protection plate can be extended, folded and contracted, and can play a good protection role on a cable no matter whether a top protection plate or other devices occupy or limit the space above the machine surface of a coal cutter, and the protection plate is not influenced by whether a rocker arm is lifted or not.
The main technical scheme of the invention is as follows:
the utility model provides a coal-winning machine cable protection shield, includes articulated first backplate, second backplate subassembly and third backplate in order, and wherein the second backplate subassembly is divided the backplate head and the tail by a plurality of seconds and articulates in order and forms, and the articulated axis between board and the board is parallel to each other, and second backplate group is zigzag folding shape under the shrink state.
The edge that is close to first backplate is fixed and is equipped with first axle sleeve, and the edge that is close to the second and divides the backplate opposite from head to tail all is fixed and is equipped with the second axle sleeve, and the edge that is close to the third backplate is fixed and is equipped with the third axle sleeve, two liang of junctions of first backplate, second branch backplate and third backplate utilize same round pin axle and belong to the axle hole cooperation formation hinge structure between the axle sleeve of different boards.
The two side plate surfaces of the second sub-guard plate can be respectively called as a front surface and a back surface, the shaft sleeve on the second sub-guard plate close to the leading edge is preferably arranged in the extending direction of the outer plate surface at the corresponding end part of the plate, the shaft sleeve close to the trailing edge is preferably arranged on one side of the back surface of the plate, and in the second guard plate assembly, the second sub-guard plate is preferably arranged with the front surface and the back surface alternately.
The first sleeve on the first cover plate and the third sleeve on the third cover plate can be arranged in the direction of extension of the outer plate surface at the respective end of the respective plate, and the second cover plate connected to the first cover plate is preferably connected to the first cover plate by its sleeve near the head edge.
The first shaft sleeve, the second shaft sleeve and the third shaft sleeve corresponding to each corresponding edge can be divided into two groups respectively and are close to two ends of the corresponding edge of each plate respectively, the second sub-protection plate is preferably a rectangular plate, the first protection plate is preferably in a convex shape, and the two groups of first shaft sleeves are positioned on two sides of a convex part of the convex edge in the middle.
The edge of keeping away from the third axle sleeve on one side face of third backplate can set up the cushion, perhaps, its thickness of third backplate is more thicker more apart from the position of third axle sleeve.
The edge of the third guard plate opposite to the edge where the third shaft sleeve is located can be set to be in a shape that the middle part is rectangular and concave inwards.
A coal mining machine cable protection plate installation structure comprises a coal mining machine and the coal mining machine cable protection plate, wherein a first protection plate is fixed on the upper portion of a rocker arm of the coal mining machine close to a machine body, a second protection plate group freely droops, a third protection plate is used as the free end of the coal mining machine cable protection plate and placed on the top surface of the machine body of the coal mining machine, all hinge axes on the coal mining machine cable protection plate are parallel to the swing axis of the rocker arm of the coal mining machine relative to the machine body of the coal mining machine, and when the coal mining machine cable protection plate is in the maximum stretching state under the driving of the rocker arm, the third protection plate still keeps in.
The utility model provides a coal-winning machine cable protection shield mounting structure, includes the coal-winning machine with coal-winning machine cable protection shield, first backplate is fixed the upper portion of the rocking arm of coal-winning machine is close to fuselage department, and the free flagging of second backplate group, the free end that the third backplate regard as coal-winning machine cable protection shield is placed on the fuselage top surface of coal-winning machine, each articulated axis on the coal-winning machine cable protection shield is parallel with the swing axis of the relative fuselage of coal-winning machine of rocking arm of coal-winning machine, works as be equipped with on a curb plate of third backplate during the cushion, this curb plate is placed face down, works as when coal-winning machine cable protection shield is in the maximum tensile state under the drive of rocking arm, the third backplate still.
The top surface of the body of the coal mining machine can be further fixedly provided with a top guard plate, the second guard plate assembly is entirely positioned between the rocker arm and the top guard plate, and the width between the head edge and the tail edge of the second guard plate is smaller than the shortest horizontal distance between the rocker arm and the top guard plate when the rocker arm is in the maximum mining height state.
The invention has the beneficial effects that:
the cable protection board of the coal mining machine can automatically extend or contract and fold along with the change of the angle of the rocker arm of the coal mining machine, not only can be used under the condition that the space of the top surface of the machine body of the coal mining machine is free, but also can be suitable for the condition that the use space of the top surface of the machine body of the coal mining machine is limited, such as the installation of a top protection board or other devices, and the like, so that the cable protection board can continuously and effectively protect a cutting cable from being crushed or extruded by a large block of coal under various conditions, and is.
Drawings
FIG. 1a is a schematic structural diagram of an embodiment of the present invention;
FIG. 1b is a top view of FIG. 1 a;
FIG. 2a is a schematic structural diagram of the first shield shown in FIGS. 1a and 1 b;
FIG. 2b is a left side view of FIG. 2 a;
FIG. 3a is a schematic structural view of the second shielding plate shown in FIGS. 1a and 1 b;
FIG. 3b is a right side view of FIG. 3 a;
FIG. 4a is a schematic structural view of the third shield shown in FIGS. 1a and 1 b;
FIG. 4b is a right side view of FIG. 4 a;
fig. 5 is a structural view of an embodiment of the shearer cable protective plate mounting structure (the shearer cable protective plate is in a contracted state).
Detailed Description
The invention discloses a cable protection plate for a coal mining machine, which comprises a first protection plate 1, a second protection plate assembly 2 and a third protection plate 3 which are sequentially hinged, wherein the second protection plate assembly is formed by sequentially hinging a plurality of second sub-protection plates 21 end to end. The hinge axes between the plates are parallel to each other. Under the action of external force, the shearer cable protection plate can be expanded and contracted, the theoretical maximum expansion state is shown in figures 1a and 1b, and the shearer cable protection plate, particularly the second protection plate component, is in a zigzag folding shape in the contraction state.
The first guard plate can be provided with a pin hole and a screw hole and used for positioning and fastening when the first guard plate is connected with a rocker arm shell of a coal mining machine. The third guard plate can be provided with screw holes so as to facilitate the hoisting of the third guard plate. When the coal mining machine protection plate is used, the first protection plate is fixed on a coal mining machine rocker arm, the spatial position is changed along with the swinging of the rocker arm, the second protection plate assembly naturally droops and adaptively extends and contracts in space along with the position change of the first protection plate, and the second protection plate closer to the third protection plate is folded more densely during contraction. Meanwhile, the third guard plate always keeps contact with the top surface of the machine body of the coal mining machine, so that when the rocker arm works in different states from the maximum lying bottom to the maximum mining height, the cable guard plate of the coal mining machine, especially the second guard plate assembly, can spontaneously make spatial adjustment by changing the shape and the position of the cable guard plate, and therefore the continuous and effective protection of the section of cutting cable below the covered space and on the top surface of the machine body is ensured. The extended and retracted states in the normal use state can also be regarded as intermediate retracted states of different degrees, the closer the theoretical ultimate retracted state is, the more densely the folding is, but the theoretical ultimate retracted state and the theoretical maximum extended state are not actually in.
For each hinge joint, the variation range of the included angle between two adjacent panels (the first protection panel, the second protection panel, and the third protection panel are collectively referred to as panels) may not be specifically limited in design, and the second protection panel and the third protection panel can be folded in a zigzag manner. If the physical dimensions of the plates and the hinge structures are neglected, that is, the plates are abstracted to a straight line, and the hinge structures are abstracted to a point, theoretically, the included angle between two adjacent plates can be changed between 0 and 360 degrees, wherein 0 degree refers to the initial position of the two plates being overlapped, and 360 degrees refers to the position of the two plates being overlapped again after one plate is rotated relative to the other plate in one direction. In practice, because the plates and the hinge structure have real physical dimensions, the variation range of the included angle between two adjacent plates is usually larger than 0 degree at the starting point and smaller than 180 degrees at the end point, so the variation range of the included angle is usually smaller than 180 degrees, but the application of the invention can be satisfied. The specific structure sizes of the plate and the hinge structure are different, and the different brought effects are mainly that the starting point and the end point of the included angle variation range are different, so that the included angle variation range is different, and the smaller the starting point value is, the tighter the zigzag folding of the second guard plate assembly can be.
In the cable protection board of the coal mining machine shown in the drawing, as an embodiment, a first shaft sleeve 11 is fixedly arranged at one edge close to the first protection board, a second shaft sleeve 21 is fixedly arranged at two opposite edges close to the head and the tail of the second sub-protection board, and a third shaft sleeve 31 is fixedly arranged at one edge close to the third protection board. The fixing of the sleeves is usually by welding. The connection parts of the first guard plate, the second guard plate and the third guard plate are matched with shaft holes between shaft sleeves of different plates by the same pin shaft to form a hinge structure.
In this embodiment, the two side plate surfaces of the second shielding plate can be respectively referred to as a front surface and a back surface, the sleeve (i.e. the sleeve 21 located at the upper portion in fig. 3 a) of the second shielding plate near the leading edge is preferably disposed in the extending direction of the outer plate surface at the corresponding end portion of the plate, and the sleeve (i.e. the sleeve 21 located at the lower portion in fig. 3 a) near the trailing edge is preferably disposed at the back surface side of the plate.
Further, in the second fender assembly, the second fender sub-assemblies are preferably arranged alternately on the front side and the back side.
The first shaft sleeve 11 on the first guard plate and the third shaft sleeve 31 on the third guard plate are respectively arranged on the corresponding ends of the respective plates in the extending direction of the outer plate surface, and the second guard plate connected with the first guard plate is connected with the first guard plate through the shaft sleeve 21 close to the head edge.
The first, second and third sleeves corresponding to each respective edge may be divided into two groups, one near each end of the respective edge of the respective plate, i.e. a left and a right group as shown in fig. 2a, 3a and 4 a. The groups at the same end form a hinge structure. In the assembled state, a plurality of shaft sleeves forming a hinge structure are coaxially arranged in sequence in the axial direction.
The second shielding plate is preferably a rectangular plate. The first guard plate is preferably convex, and the two groups of first shaft sleeves 21 are positioned on two sides of a convex part of the convex edge in the middle. The projection does not extend beyond the distal-most end of the first sleeve. In the assembled state, the protruding portion just substantially fills the gap between the two sets of sleeves on the second guard plate near the nose edge.
The edge of the third shaft sleeve 31 far away from the third guard plate can be provided with a cushion block 32, the structural shape of the cushion block is not limited, and the cushion block can be a pipe or a plate. Alternatively, the third shield may be configured to have a different thickness, and specifically, the thickness of the third shield may be increased as the third shield is farther from the third boss. For the cable protection board provided with the cushion block, when the coal mining machine cable protection board is installed, the surface of one side provided with the cushion block faces the surface of the installation foundation.
No matter set up the cushion or adopt the third backplate of not uniform thickness, when coal-winning machine cable protection shield shrink, the third backplate all shows the tilt state that one end is high one end is low for its basic surface of placing, more makes things convenient for the rotation of second branch backplate relative third backplate, is favorable to folding of second backplate subassembly when coal-winning machine cable protection shield is in the shrink state.
The distance between the leading edge and the trailing edge of the second guard plate is taken as the width of the second guard plate, and the width of the third guard plate is preferably larger than that of the second guard plate in the same direction. When the cable protection board of the coal mining machine is contracted, the stacked second sub protection boards are supported on the board surface of the third protection board.
The number of the second protective plates is determined flexibly according to the maximum length to which the cable protective plate of the coal mining machine needs to be stretched when the rocker arm of the coal mining machine is in the maximum bedding state. The first and third cover sheets have a width that does not interfere with other structures. For the second guard plate assembly, when a top guard plate or other devices are arranged above the machine body of the coal mining machine, and the like, so that the space is limited, the width of the second guard plate is ensured to be smaller than the shortest horizontal distance C between the rocker arm of the coal mining machine and the top guard plate or other devices when the rocker arm of the coal mining machine is in the maximum mining height state.
For the situation that the top surface of the body of the coal mining machine is provided with the top guard plate or other devices, the edge of the third guard plate, which is opposite to the edge where the third shaft sleeve is located, can be set into any shape suitable for being matched with the top guard plate or other devices, so that the space is fully utilized, the third guard plate, the top guard plate or other devices do not influence to exert respective functions, and the third guard plate can be prevented from moving in the front and rear directions of the coal mining machine. The embodiment shown in the figures is provided in the form of a rectangular recess in the middle. When installed, the outer contour of the top fender on the side closer to the rocker arm may be located in this recess of the third fender. The third guard plate can move in a reciprocating mode in the horizontal direction relative to the top guard plate or other devices, and the concave depth of the concave part on the third guard plate is preferably not less than the maximum reciprocating amount of the third guard plate in the horizontal direction, so that the third guard plate is ensured not to interfere with the top guard plate or other devices.
The invention also provides a mounting structure of the cable protection board of the coal mining machine, as shown in fig. 5, the mounting structure comprises the coal mining machine and the cable protection board of the coal mining machine, the first protection board 1 is fixed at the upper part of the rocker arm 4 of the coal mining machine close to the machine body, and the mounting of the first protection board on the rocker arm is generally realized through pin positioning, and fastening of bolts and gaskets. The second set of shields hangs freely down and the third shield is placed as a free end of the shearer cable guard on the top surface of the shearer's body, which may be the top surface of the tractor box 6, for example. And all hinge axes on the cable protection plate of the coal mining machine are parallel to the swing axis of the rocker arm of the coal mining machine relative to the machine body of the coal mining machine. The whole cable protection board of the coal mining machine is positioned above the exposed cutting cable. When the rocker arm is in the maximum bedding state, the cable protection plate of the coal mining machine is in the actual maximum extension state, and the third protection plate still keeps contact with the top surface of the machine body of the coal mining machine. And the coal mining machine cable protection plate is further contracted along with the gradual lifting of the rocker arm, and when the rocker arm is in the maximum mining height state, the coal mining machine cable protection plate is contracted into a state that the second protection plate component is in the most dense zigzag folded state.
Further, a top guard plate 5 can be fixed on the top surface of the machine body of the coal mining machine. In this case the second apron assembly is located entirely between the swing arm 4 and the top apron 5, in which case the width between the leading and trailing edges of the second apron should be smaller than the shortest horizontal distance C between the swing arm and the top apron in the maximum pick-up condition.
Furthermore, the edge of the third guard plate opposite to the edge where the third shaft sleeve is located is embedded with the outer contour of one side face of the top guard plate close to the corresponding side rocker arm, so that the third guard plate can be prevented from moving in the front-rear direction of the coal mining machine.
The invention also provides another installation structure of the cable protection board of the coal mining machine, which comprises the coal mining machine and the cable protection board of the coal mining machine as shown in fig. 5, wherein the cushion block is arranged on one side plate of the third protection board of the cable protection board of the coal mining machine. The first guard plate 1 is fixed on the upper part of a rocker arm 4 of the coal mining machine close to a machine body, and the first guard plate is generally arranged on a rocker arm shell through pin positioning, and fastening of a bolt and a gasket. The second set of shields hangs freely down and the third shield is placed as a free end of the shearer cable guard on the top surface of the shearer's body, which may be the top surface of the tractor box 6, for example. And one side plate surface of the third guard plate, which is provided with the cushion block, faces the top surface of the machine body of the coal mining machine. And all hinge axes on the cable protection plate of the coal mining machine are parallel to the swing axis of the rocker arm of the coal mining machine relative to the machine body of the coal mining machine. Similarly, when the rocker arm is in the maximum bedding state, the cable protection plate of the coal mining machine is in the actual maximum extension state, and the third protection plate still keeps contact with the top surface of the machine body of the coal mining machine. And the coal mining machine cable protection plate is further contracted along with the gradual lifting of the rocker arm, and when the rocker arm is in the maximum mining height state, the coal mining machine cable protection plate is contracted into a state that the second protection plate component is in the most dense zigzag folded state.
Further, a top guard plate 5 can be fixed on the top surface of the machine body of the coal mining machine. In this case the second apron assembly is located entirely between the swing arm 4 and the top apron 5, in which case the width between the leading and trailing edges of the second apron needs to be smaller than the shortest horizontal distance C between the swing arm and the top apron in the maximum pick-up condition.
Therefore, the cable protection board of the coal mining machine can adapt to the up-and-down swing of the rocker arm through free extension and folding contraction, so that the cutting cable is continuously and effectively protected. Even if the top guard plate or other devices are arranged on the body of the coal mining machine to limit the space, the cable protection plate for the coal mining machine can also meet the protection requirement of cutting cables as long as the size of each plate, especially the width and the number of the second sub guard plate are reasonably limited.
Claims (10)
1. The utility model provides a coal-winning machine cable protection shield which characterized in that: including articulated first backplate, second backplate subassembly and third backplate in order, wherein the second backplate subassembly is divided the backplate head and the tail by a plurality of seconds and is articulated in order and form, and the articulated axis between board and the board is parallel to each other, and second backplate group is zigzag folding shape under the shrink state.
2. The shearer cable protection panel as set forth in claim 1, wherein: the edge that is close to first backplate is fixed and is equipped with first axle sleeve, and the edge that is close to the second and divides the backplate opposite from head to tail all is fixed and is equipped with the second axle sleeve, and the edge that is close to the third backplate is fixed and is equipped with the third axle sleeve, two liang of junctions of first backplate, second branch backplate and third backplate utilize same round pin axle and belong to the axle hole cooperation formation hinge structure between the axle sleeve of different boards.
3. The shearer cable protection panel as set forth in claim 2, wherein: the two side plate surfaces of the second sub-guard plate are respectively a front surface and a back surface, the shaft sleeve close to the head edge on the second sub-guard plate is arranged on the corresponding end part of the plate in the extending direction of the plate surface, the shaft sleeve close to the tail edge is arranged on one side of the back surface of the plate, and in the second guard plate assembly, the front surface and the back surface of the second sub-guard plate are alternately arranged.
4. The shearer cable protection plate as claimed in claim 3, wherein: the first shaft sleeve on the first guard plate and the third shaft sleeve on the third guard plate are respectively arranged on the corresponding end parts of the plates in the extending direction of the outer plate surface, and the second guard plate connected with the first guard plate is connected with the first guard plate through the shaft sleeve close to the head edge.
5. The shearer cable protection plate as set forth in claim 4, wherein: the first shaft sleeve, the second shaft sleeve and the third shaft sleeve corresponding to each corresponding edge are divided into two groups respectively and are close to two ends of the corresponding edge of each plate respectively, the second branch protective plate is a rectangular plate, the first protective plate is in a convex shape, and the two groups of first shaft sleeves are positioned on two sides of a convex part of the middle convex edge.
6. The shearer cable protection plate as claimed in claim 2, 3, 4 or 5, wherein: the edge of keeping away from the third axle sleeve on one side face of third backplate is provided with the cushion, perhaps, its thickness is thicker more for the position that the third axle sleeve is kept away from more to the third backplate.
7. The shearer cable protection plate as claimed in claim 1, 2, 3, 4 or 5, wherein: the edge of the third guard plate, which is opposite to the edge where the third shaft sleeve is located, is arranged into a shape with a rectangular and concave middle part.
8. The utility model provides a coal-winning machine cable protection shield mounting structure which characterized in that: the cable protection plate comprises a coal mining machine and the coal mining machine cable protection plate as claimed in any one of claims 1 to 7, wherein the first protection plate is fixed on the upper portion of a rocker arm of the coal mining machine close to a machine body, the second protection plate group is free to droop, the third protection plate is used as the free end of the coal mining machine cable protection plate and is placed on the top surface of the machine body of the coal mining machine, each hinge axis on the coal mining machine cable protection plate is parallel to the swing axis of the rocker arm of the coal mining machine relative to the machine body of the coal mining machine, and when the coal mining machine cable protection plate is driven by the rocker arm to be in a maximum stretching state, the third protection plate.
9. The utility model provides a coal-winning machine cable protection shield mounting structure which characterized in that: the coal mining machine cable protection plate comprises a coal mining machine and the coal mining machine cable protection plate according to claim 7, wherein the first protection plate is fixed on the upper portion of a rocker arm of the coal mining machine close to a machine body, the second protection plate group freely droops, the third protection plate is used as the free end of the coal mining machine cable protection plate and placed on the top surface of the machine body of the coal mining machine, each hinge axis on the coal mining machine cable protection plate is parallel to the swing axis of the rocker arm of the coal mining machine relative to the machine body of the coal mining machine, when the cushion block is arranged on one side plate of the third protection plate, the side plate faces downwards, and when the coal mining machine cable protection plate is in a maximum stretching state under the driving of the rocker.
10. The shearer cable protective plate mounting structure as set forth in claim 8 or 9, wherein: the top surface of the body of the coal mining machine is also fixedly provided with a top guard plate, the second guard plate assembly is entirely positioned between the rocker arm and the top guard plate, and the width between the head edge and the tail edge of the second guard plate is smaller than the shortest horizontal distance between the rocker arm and the top guard plate when the rocker arm is in the maximum mining height state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010188584.5A CN111236938A (en) | 2020-03-17 | 2020-03-17 | Coal mining machine cable protection plate and coal mining machine cable protection plate installation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010188584.5A CN111236938A (en) | 2020-03-17 | 2020-03-17 | Coal mining machine cable protection plate and coal mining machine cable protection plate installation structure |
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| Publication Number | Publication Date |
|---|---|
| CN111236938A true CN111236938A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010188584.5A Pending CN111236938A (en) | 2020-03-17 | 2020-03-17 | Coal mining machine cable protection plate and coal mining machine cable protection plate installation structure |
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| CN (1) | CN111236938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122794A (en) * | 2021-11-05 | 2022-03-01 | 滨海爱光电子有限公司 | Connecting wire of wire cutting machine |
-
2020
- 2020-03-17 CN CN202010188584.5A patent/CN111236938A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122794A (en) * | 2021-11-05 | 2022-03-01 | 滨海爱光电子有限公司 | Connecting wire of wire cutting machine |
| CN114122794B (en) * | 2021-11-05 | 2024-02-27 | 滨海爱光电子有限公司 | Connecting wire of wire cutting machine |
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