CN220972234U - Coal pulverizer mill pin is torn open and is pulled out device - Google Patents
Coal pulverizer mill pin is torn open and is pulled out device Download PDFInfo
- Publication number
- CN220972234U CN220972234U CN202322437646.3U CN202322437646U CN220972234U CN 220972234 U CN220972234 U CN 220972234U CN 202322437646 U CN202322437646 U CN 202322437646U CN 220972234 U CN220972234 U CN 220972234U
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- bolt
- threaded hole
- pin
- hole
- threaded
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- 239000003245 coal Substances 0.000 title claims abstract description 28
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 210000000078 claw Anatomy 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The utility model relates to the technical field of shaft pulling devices, and provides a grinding disc pin pulling device of a coal mill, which comprises a top plate, a bottom plate, a first bolt, a second bolt and a third bolt, wherein the two ends of the top plate are symmetrically provided with a first threaded hole and a second threaded hole, the middle part of the top plate is provided with a third threaded hole, the two ends of the bottom plate are symmetrically provided with a fourth threaded hole and a fifth threaded hole, the fourth threaded hole is correspondingly provided with the first threaded hole, the second threaded hole is correspondingly provided with the fifth threaded hole, one end of the first bolt is in threaded connection with the first threaded hole and extends out of the hole, the other end of the first bolt is in threaded connection with the fourth threaded hole and extends out of the hole, the second bolt is symmetrically arranged with the first bolt, and the third bolt is in adaptive connection with the third threaded hole and extends into the threaded hole of the pin, and the technical problem that the prior art is inconvenient to use is solved.
Description
Technical Field
The utility model relates to the technical field of shaft pulling devices, in particular to a device for removing pins of a millstone of a coal mill.
Background
The industrial pulverized coal direct-injection boiler needs a large amount of pulverized coal to maintain the operation of the boiler, the large amount of pulverized coal is sourced from pulverized coal grinding equipment, and optional equipment includes coal mills, large spherical coal mills and the like, and the coal mills need to be periodically checked and maintained whether the operation is stable or not in the operation, so that a pin disassembling device is inevitably needed in the operation of checking and maintaining.
The pin device of the grinding disc is provided with a blind hole with threads in the middle, so that the removal is difficult, and a common mode in the prior art is to forcibly take out the pin device by using a normal wheel puller. The wheel puller is generally a claw-opening mechanism tool and is provided with three claw seats and claw bodies, wherein each claw arm is pivoted on each claw seat, the claw-opening bodies can elastically slide in the claw seats and are driven by the claw-opening bodies to emit by wheels, and the claw arms can swing between an open position and a closed position relative to the clamping seats in use.
The present inventors found that there are at least the following technical problems in the prior art: when the pin pulling device is used for removing the pin device, the problem of inconvenient operation exists, the possibility of slipping out exists when three claws are used each time, the length of the three claws is required to be increased, the main pin body is difficult to clamp otherwise, the pin belongs to a longer long iron rod, the three claws are small in clamping position, the three claws are inconvenient to use in actual operation, the maintenance period is affected, the maintenance work cannot be smoothly carried out, and the maintenance quality is affected.
Disclosure of utility model
The utility model aims to provide a coal mill millstone pin disassembling and pulling device which at least solves the technical problem that the operation is inconvenient in the prior art. The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
some embodiments of the application provide a coal mill grinding disc pin pulling device, comprising:
The top plate is symmetrically provided with a first threaded hole and a second threaded hole at two ends, and a third threaded hole is formed in the middle;
A bottom plate, a fourth threaded hole and a fifth threaded hole are symmetrically formed in two ends of the bottom plate, the fourth threaded hole is correspondingly formed in the first threaded hole, and the second threaded hole is correspondingly formed in the fifth threaded hole;
one end of the first bolt is in threaded connection with the first threaded hole and extends out of the hole, and the other end of the first bolt is in threaded connection with the fourth threaded hole and extends out of the hole;
One end of the second bolt is in threaded connection with the second threaded hole and extends out of the hole, and the other end of the second bolt is in threaded connection with the fifth threaded hole and extends out of the hole;
and the third bolt is connected with the third threaded hole in an adapting way and extends into the threaded hole of the pin.
According to the coal mill millstone pin pulling device provided by some embodiments of the application, the top plate and the bottom plate are arranged in parallel, the axis of the first bolt is perpendicular to the top plate and the bottom plate, and the second bolt and the first bolt are symmetrically arranged.
According to the coal mill millstone pin pulling device provided by some embodiments of the application, the device further comprises a baffle plate, the baffle plate is arranged between the top plate and the bottom plate, the baffle plate is sleeved on the first bolt and/or the second bolt, a sixth threaded hole is formed in one end of the baffle plate, and the sixth threaded hole is matched with the first bolt and the second bolt.
According to the coal mill millstone pin pulling device provided by some embodiments of the application, a semicircular notch is arranged at the edge of one end of the baffle plate, which is far away from the sixth threaded hole, and a gap is directly arranged between the outer wall of the pin and the outer wall of the semicircular notch.
According to the coal mill millstone pin pulling device provided by some embodiments of the application, two baffles are arranged, and the two baffles are respectively sleeved on the first bolt and/or the second bolt.
According to some embodiments of the application, the first threaded hole, the second threaded hole, the fourth threaded hole and the fifth threaded hole have the same pore diameters.
According to the coal mill millstone pin pulling device provided by some embodiments of the application, locking nuts are arranged at two ends of the first bolt and the second bolt.
According to the coal mill millstone pin pulling device provided by some embodiments of the application, the length of the first bolt is greater than that of the third bolt, the length of the first bolt is greater than or equal to 300mm, and the structure of the second bolt is the same as that of the first bolt.
One or more technical solutions in the embodiments of the present utility model have at least one of the following technical effects:
The bottom plate is load-bearing platform, link together roof and bottom plate through first bolt and second bolt, make the whole be convenient for install in dismantling through the connected mode of screw thread and bolt, when using, first bolt and second bolt are fixed stay, the roof is fixed state, pass through the screw thread with the pin when the third bolt, rotate the third bolt, the third bolt rotates at the third screw hole, make the pin roll-out through the cooperation of screw thread, make the pin can pull out, facilitate the use in the actual operation, avoid influencing the maintenance cycle, enable maintenance work and go on smoothly, help improving maintenance quality.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic overall construction of some embodiments of the application;
FIG. 2 is a schematic illustration of a top plate structure according to some embodiments of the application;
FIG. 3 is a schematic diagram of the structure of a base plate according to some embodiments of the application;
FIG. 4 is a schematic view of a baffle structure according to some embodiments of the present application;
fig. 5 is a schematic diagram of a pin configuration according to some embodiments of the application.
In the figure: 1. a top plate; 11. a first threaded hole; 12. a second threaded hole; 13. a third threaded hole; 2. a bottom plate; 21. a fourth threaded hole; 22. a fifth threaded hole; 3. a first bolt; 4. a second bolt; 5. a third bolt; 61. a sixth threaded hole; 6. a baffle; 62. a semicircular notch; 7. a pin; 71. and (5) a blind hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.
1-5, The utility model provides a coal mill millstone pin pulling device, which comprises:
The top plate 1 is symmetrically provided with a first threaded hole 11 and a second threaded hole 12 at two ends, and a third threaded hole 13 is formed in the middle; the top plate 1 may be a rectangular plate, and the first threaded hole 11 and the second threaded hole 12 are symmetrically formed.
A fourth threaded hole 21 and a fifth threaded hole 22 are symmetrically formed in two ends of the bottom plate 2, the fourth threaded hole 21 is correspondingly formed with the first threaded hole 11, and the second threaded hole 12 is correspondingly formed with the fifth threaded hole 22; the bottom plate 2 may be a rectangular plate, and the fourth threaded hole 21 and the fifth threaded hole 22 are symmetrically formed, wherein the fourth threaded hole 21 and the first threaded hole 11 are coaxially formed, the fifth threaded hole 22 and the second threaded hole 12 are coaxially formed, and the hole spacing between the first threaded hole 11 and the second threaded hole 12 is the same as the hole spacing between the fourth threaded hole 21 and the fifth threaded hole 22.
A first bolt 3, one end of which is screwed with the first threaded hole 11 and extends out of the hole, and the other end of which is screwed with the fourth threaded hole 21 and extends out of the hole; the external thread of the first bolt 3 is adapted to the first threaded hole 11 and the fourth threaded hole 21.
A second bolt 4, one end of which is screwed with the second threaded hole 12 and extends out of the hole, and the other end of which is screwed with the fifth threaded hole 22 and extends out of the hole; the external thread of the second bolt 4 is adapted to the second threaded hole 12 and the fifth threaded hole 22.
The third bolt 5 is adapted to be connected with the third threaded hole 13 and extends into the threaded hole of the stud 7. Wherein, the aperture of the third threaded hole 13 is adapted with the third bolt 5, and the blind hole 71 formed by the pin 7 of the third bolt 5 is adapted.
During implementation, the bottom plate 2 is a bearing platform, the first bolt 3 and the second bolt 4 are supports on two sides, the top plate 1 and the bottom plate 2 are fixed through the first bolt 3 and the second bolt 4, wherein the end portion of the third bolt 5 is screwed into the blind hole 71 of the pin 7, the blind hole 71 of the pin 7 is a threaded hole, the third bolt 5 and the pin 7 can be connected together in a threaded connection mode, the length of the third bolt 5 is greater than the depth of the blind hole 71 of the pin 7, the third bolt 5 penetrates through the third threaded hole 13 of the top plate 1 to extend into the blind hole 71 of the pin 7 to be connected with the pin 7, at the moment, the third bolt 5 is rotated in the third threaded hole 13, the pin 7 can be screwed out upwards, and the pin 7 can be pulled out from a device embedded in the pin 7.
Preferably, the top plate 1 and the bottom plate 2 are arranged in parallel, the axis of the first bolt 3 is perpendicular to the top plate 1 and the bottom plate 2, and the second bolt 4 and the first bolt 3 are symmetrically arranged, so that the stress of the device is more balanced and the device is more stable in use.
In some embodiments, the device further comprises a baffle 6, the baffle 6 is arranged between the top plate 1 and the bottom plate 2, the baffle 6 is sleeved on the first bolt 3 and/or the second bolt 4, a sixth threaded hole 61 is formed in one end of the baffle 6, the sixth threaded hole 61 is matched with the first bolt 3 and the second bolt 4, the baffle 6 can be fixed on the first bolt 3 and/or the second bolt 4 through the sixth threaded hole 61, and when the pin 7 is pulled out, in order to avoid synchronous upward displacement of a device sleeved outside the pin 7, the baffle 6 is arranged to block the pin 7, so that the pin 7 is more convenient to pull out.
Preferably, a semicircular notch 62 is provided at the edge of the baffle 6 away from one end of the sixth threaded hole 61, and a gap is directly provided between the outer wall of the pin 7 and the outer wall of the semicircular notch 62, where the two semicircular notches 62 are spliced together to form a circular channel through which the pin 7 can be pulled out upwards.
Preferably, two baffles 6 are provided, and the two baffles 6 are respectively sleeved on the first bolt 3 and/or the second bolt 4, and the two baffles 6 are used for blocking, so that the stress is more uniform.
Preferably, the first threaded hole 11, the second threaded hole 12, the fourth threaded hole 21 and the fifth threaded hole 22 have the same aperture, which is convenient for production and processing and convenient for quick assembly and disassembly in use.
Preferably, the first bolt 3 and the two ends of the second bolt 4 are both provided with locking nuts, and the top plate 1 and the bottom plate 2 are further fixed by the locking nuts, so that the stability in use is improved.
Preferably, the length of the first bolt 3 is greater than that of the third bolt 5, the length of the first bolt 3 is greater than or equal to 300mm, and the structure of the second bolt 4 is the same as that of the first bolt 3, so that sufficient travel is provided to enable the pin 7 to be pulled out in use.
When the clamp pin 7 is used, the clamp pin 7 can be fastened, the clamp pin 7 cannot be loosened, the clamp pin 7 can be pulled out rapidly in the aspect of stress, the maintenance of the operation quality is convenient, the maintenance is finished smoothly, and the long-period operation of the operation environment and equipment is improved.
In the description of the present utility model, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc., refer to an orientation or positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a coal pulverizer mill pin tear device open which characterized in that includes:
The top plate is symmetrically provided with a first threaded hole and a second threaded hole at two ends, and a third threaded hole is formed in the middle;
A bottom plate, a fourth threaded hole and a fifth threaded hole are symmetrically formed in two ends of the bottom plate, the fourth threaded hole is correspondingly formed in the first threaded hole, and the second threaded hole is correspondingly formed in the fifth threaded hole;
one end of the first bolt is in threaded connection with the first threaded hole and extends out of the hole, and the other end of the first bolt is in threaded connection with the fourth threaded hole and extends out of the hole;
One end of the second bolt is in threaded connection with the second threaded hole and extends out of the hole, and the other end of the second bolt is in threaded connection with the fifth threaded hole and extends out of the hole;
and the third bolt is connected with the third threaded hole in an adapting way and extends into the threaded hole of the pin.
2. The coal pulverizer millstone pin removal device of claim 1, wherein the top plate is disposed parallel to the bottom plate, the axis of the first bolt is perpendicular to the top plate and the bottom plate, and the second bolt is disposed symmetrically to the first bolt.
3. The coal pulverizer millstone pin removal device of claim 1, further comprising a baffle plate disposed between the top plate and the bottom plate, the baffle plate being sleeved on the first bolt and/or the second bolt, a sixth threaded hole being provided at one end of the baffle plate, the sixth threaded hole being adapted to the first bolt and the second bolt.
4. The coal pulverizer millstone pin removal device of claim 3, wherein a semicircular notch is formed in the edge of the baffle plate away from one end of the sixth threaded hole, and a gap is formed between the outer wall of the pin and the outer wall of the semicircular notch.
5. The coal pulverizer millstone pin removal device of claim 4, wherein two baffles are provided, and the two baffles are respectively sleeved on the first bolt and/or the second bolt.
6. The coal pulverizer mill pin removal device of claim 1, wherein the first, second, fourth and fifth threaded bores have the same bore diameter.
7. The coal pulverizer mill pin removal device of claim 1, wherein the first bolt and the second bolt are provided with lock nuts at both ends.
8. The coal pulverizer millstone pin removal device of claim 1, wherein the length of the first bolt is greater than the third bolt, the length of the first bolt is greater than or equal to 300mm, and the structure of the second bolt is identical to the first bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322437646.3U CN220972234U (en) | 2023-09-07 | 2023-09-07 | Coal pulverizer mill pin is torn open and is pulled out device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322437646.3U CN220972234U (en) | 2023-09-07 | 2023-09-07 | Coal pulverizer mill pin is torn open and is pulled out device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220972234U true CN220972234U (en) | 2024-05-17 |
Family
ID=91061967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322437646.3U Active CN220972234U (en) | 2023-09-07 | 2023-09-07 | Coal pulverizer mill pin is torn open and is pulled out device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220972234U (en) |
-
2023
- 2023-09-07 CN CN202322437646.3U patent/CN220972234U/en active Active
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