CN215711012U - Medium speed pulverizer grinding roller shell ejecting device - Google Patents
Medium speed pulverizer grinding roller shell ejecting device Download PDFInfo
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- CN215711012U CN215711012U CN202120645518.6U CN202120645518U CN215711012U CN 215711012 U CN215711012 U CN 215711012U CN 202120645518 U CN202120645518 U CN 202120645518U CN 215711012 U CN215711012 U CN 215711012U
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- roller sleeve
- grinding roller
- support
- fixedly connected
- ejection device
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Abstract
The utility model discloses a middle-speed coal mill grinding roller sleeve ejection device which comprises a support, wherein four cross-shaped cross beams are welded on the support, a hydraulic rod is arranged at the bottom of the support, a connecting block is fixedly connected to the top of the support, a grab hook is used for clamping a roller sleeve, the roller sleeve ejection device of the middle-speed coal mill grinding roller can enable the roller sleeve to be stressed at four equally-distributed points, the frequency of changing stress points by turning a chassis can be reduced, the stress points are pull ribs on the inner wall of the roller sleeve, the outer surface of an abrasion-resistant layer of the roller sleeve is not damaged, and the cost of repair welding materials is saved. Meanwhile, after the hydraulic jack is removed, the electric hoist can be directly used for lifting, so that the lifting is fast, stable and safe. In conclusion, the lifting device can improve the working efficiency by three times, save one fourth of the maintenance cost, respond to the call of 'quality improvement and efficiency improvement' of power enterprises, eliminate the potential safety hazard in the lifting process and realize the intrinsic safety.
Description
Technical Field
The utility model relates to the technical field of coal mills, in particular to a roller sleeve ejection device of a grinding roller of a medium-speed coal mill.
Background
With the development of society and the progress of science and technology, the labor cost is gradually increased. In the daily on-site maintenance operation process, the coal mill runs for a long maintenance period and changes of coal types, so that the roller sleeve of the grinding roller is seriously worn, the coal grinding quality and the economic operation of the coal mill are influenced, the boiler cannot run for the long period under full load, and the economic benefit and the stability of a power plant are directly influenced. Therefore, in order to guarantee the coal grinding quality and stable operation of the coal grinding machine, the roller sleeve of the grinding roller of the coal grinding machine is replaced to be in a normal state, but the working medium of the grinding roller of the coal grinding machine is pulverized coal under high temperature and strong wind, the roller sleeve of the grinding roller is locked on the bearing of the grinding roller after long-term operation in the environment, the roller sleeve of the grinding roller is taken down, time and labor are wasted, the maintenance period is prolonged, and the maintenance cost is increased.
In the prior art, the roller sleeve of the grinding roller is taken out and needs to be ejected out by a hydraulic jack and then lifted away by an electric hoist. The method is that a hydraulic jack is placed between a roller sleeve and a grinding roller bearing frame, and a hydraulic handle is operated to loosen the top of the roller sleeve and then lift the roller sleeve away;
the prior art solutions suffer from three disadvantages: one is that the top of the roller sleeve of the grinding roller is single due to the arrangement of a hydraulic jack, the stress is uneven, the stress point needs to be changed by turning for many times, and the top of the roller sleeve of the grinding roller can be loosened, so that the working efficiency is reduced; secondly, the roller sleeve is locked on the bearing of the grinding roller, and the surface of the roller sleeve is subjected to repair welding by an anti-abrasion welding wire, so that the roller sleeve is wear-resistant, but is easy to crack and fall off under external force, and is easy to bear excessive force in the ejection process, so that a wear-resistant layer falls off, and the cost of repair welding materials is increased as a result; thirdly, the ropes need to be bound again before hoisting, so that the ropes are convenient to lift, and the hoisting walking process is unstable and easy to shake due to the shape of the roller sleeve, so that the hoisting walking process is not beneficial to safe operation. The conclusion derived from the three aspects is that the roller sleeve ejecting device for the grinding roller of the medium-speed coal mill has low efficiency, increases economic cost and has potential risks, so that the device for ejecting the roller sleeve of the grinding roller of the medium-speed coal mill solves the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that in the prior art, the ejection stress point is single and uneven, and an anti-abrasion layer outside a roller sleeve is stressed, and provides an ejection device for a roller sleeve of a grinding roller of a medium-speed coal mill.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an intermediate speed pulverizer grinding roller shell ejecting device, includes the support, the welding has four cross crossbeams on the support, the bottom of support is provided with the hydraulic stem, the top fixedly connected with connecting block of support, the top fixedly connected with pull ring of connecting block, the tip of cross crossbeam is provided with the grapple, the inboard fixedly connected with gag lever post of grapple, the spacing groove has been seted up to the tip of cross crossbeam, swing joint between the lateral wall of gag lever post and spacing groove, and looks adaptation between gag lever post and the spacing groove, the first lock of fixedly connected with is detained on the lateral wall of grapple, the locking groove has been seted up to the tip of cross crossbeam, the sliding tray has been seted up on the lateral wall of locking groove, the inside disassembly body that is provided with of sliding tray.
Preferably, still include stop gear, stop gear includes sliding block, spring, push rod, second hasp, swing joint between the inside wall of sliding block and sliding tray, the top fixedly connected with push rod of sliding block, the push rod runs through the lateral wall of sliding tray, and extends to the outside of cross crossbeam, the top of sliding block is provided with the spring, fixed connection between the top of spring and the inside wall of sliding tray, fixedly connected with second hasp on the lateral wall of sliding block.
Preferably, the support is made of two manganese steel plates with the thickness of 10mm and the diameter of 200 mm.
Preferably, the grapple is made of a manganese steel plate with the thickness of 10mm, the height of 300mm and the width of 20mm through welding.
Preferably, all four cross-shaped cross beams 2 are made of No. 10I steel with the length of 550 mm.
Preferably, the spring is made of stainless steel material, and the spring is an elastic spring.
Compared with the prior art, the utility model has the beneficial effects that:
1. the grabbing hook is used for clamping the roller sleeve, the roller sleeve of the grinding roller of the rapid coal mill can be evenly stressed at four points through the ejection device of the roller sleeve, the times of changing stress points by turning are reduced, the stress points are lacing wires on the inner wall of the roller sleeve, the outer surface of an anti-wear layer of the roller sleeve is not damaged, and the cost of repair welding materials is saved. Meanwhile, after the hydraulic jack is removed, the electric hoist can be directly used for lifting, so that the lifting is fast, stable and safe. In conclusion, the lifting device can improve the working efficiency by three times, save one fourth of the maintenance cost, respond to the call of 'quality improvement and efficiency improvement' of power enterprises, eliminate the potential safety hazard in the lifting process and realize the intrinsic safety;
the accessible promotes the push rod for sliding block downstream, and then makes second hasp downstream, the in-process of second hasp downstream will its spacing effect of relieving first hasp, and the grapple will take off fast this moment, need prevent to dismantle inconvenient condition with the help of other instruments when avoiding the dismouting, simple structure, and the staff of being convenient for uses, improves work efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a grinding roller sleeve ejection device of a medium-speed coal mill, which is provided by the utility model;
FIG. 2 is a structural side view of a grinding roller sleeve ejection device of a medium speed coal mill, which is provided by the utility model;
FIG. 3 is an enlarged structural view of a grinding roller sleeve ejection device A of a medium speed coal mill provided by the utility model;
fig. 4 is an expanded structural view of a grinding roller sleeve ejection device of a medium speed coal mill provided by the utility model.
In the figure: the device comprises a support 1, a cross-shaped cross beam 2, a limiting rod 3, a grapple 4, a hydraulic rod 5, a connecting block 6, a pull ring 7, a locking groove 8, a sliding groove 9, a limiting groove 10, a sliding block 11, a spring 12, a push rod 13, a second lock catch 14 and a first lock catch 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a medium speed coal mill grinding roller sleeve ejection device comprises a support 1, the support 1 is made of two manganese steel plates with thickness of 10mm and diameter of 200mm, four cross beams 2 are welded on the support 1, the four cross beams 2 are all made of No. 10 steel with length of 550mm, a hydraulic rod 5 is arranged at the bottom of the support 1, a connecting block 6 is fixedly connected at the top of the support 1, a pull ring 7 is fixedly connected at the top of the connecting block 6, a grapple 4 is arranged at the end part of the cross beam 2, the grapple 4 is made of manganese steel plates with thickness of 10mm, height of 300mm and width of 20mm by welding, a limiting rod 3 is fixedly connected at the inner side of the grapple 4, a limiting groove 10 is arranged at the end part of the cross beam 2, the limiting rod 3 is movably connected with the side wall of the limiting groove 10, the limiting rod 3 is matched with the limiting groove 10, a first lock 15 is fixedly connected on the side wall of the grapple 4, the end part of the cross-shaped cross beam 2 is provided with a locking groove 8, the side wall of the locking groove 8 is provided with a sliding groove 9, a dismounting mechanism is arranged inside the sliding groove 9, the limiting mechanism comprises a sliding block 11, a spring 12, a push rod 13 and a second lock catch 14, the sliding block 11 is movably connected with the inner side wall of the sliding groove 9, the top of the sliding block 11 is fixedly connected with the push rod 13, the push rod 13 penetrates through the side wall of the sliding groove 9 and extends to the outside of the cross-shaped cross beam 2, the top of the sliding block 11 is provided with the spring 12, the spring 12 is made of stainless steel materials, the spring is an elastic spring, the top of the spring 12 is fixedly connected with the inner side wall of the sliding groove 9, and the side wall of the sliding block 11 is fixedly connected with the second lock catch 14;
the sliding block 11 can move downwards by pushing the push rod 13, so that the second lock catch 14 moves downwards, and the limiting effect of the second lock catch 14 on the first lock catch 15 is relieved in the downward movement process of the second lock catch 14, at the moment, the grapple 4 can be quickly taken down, so that the situation of inconvenient disassembly is avoided by means of other tools during disassembly and assembly, the structure is simple, the use by workers is convenient, and the working efficiency is improved;
the grab hook 4 is used for clamping the roller sleeve, the roller sleeve can be evenly stressed at four points through the roller sleeve ejection device of the grinding roller of the rapid coal mill, the times of changing stress points by turning gear can be reduced, the stress points are lacing wires on the inner wall of the roller sleeve, the outer surface of the anti-wear layer of the roller sleeve is not damaged, and the cost of repair welding materials is saved. Meanwhile, after the hydraulic jack is removed, the electric hoist can be directly used for lifting, so that the lifting is fast, stable and safe. In conclusion, the lifting device can improve the working efficiency by three times, save one fourth of the maintenance cost, respond to the call of 'quality improvement and efficiency improvement' of power enterprises, eliminate the potential safety hazard in the lifting process and realize the intrinsic safety.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The middle-speed coal mill grinding roller sleeve ejection device comprises a support (1) and is characterized in that four cross-shaped cross beams (2) are welded on the support (1), a hydraulic rod (5) is arranged at the bottom of the support (1), a connecting block (6) is fixedly connected to the top of the support (1), pull rings (7) are fixedly connected to the top of the connecting block (6), a grapple (4) is arranged at the end of each cross-shaped cross beam (2), a limiting rod (3) is fixedly connected to the inner side of the grapple (4), a limiting groove (10) is formed in the end of each cross-shaped cross beam (2), the limiting rod (3) is movably connected with the side wall of the limiting groove (10), the limiting rod (3) is matched with the limiting groove (10), a first lock catch (15) is fixedly connected to the side wall of the grapple (4), and a locking groove (8) is formed in the end of each cross-shaped cross beam (2), the side wall of the locking groove (8) is provided with a sliding groove (9), and a dismounting mechanism is arranged in the sliding groove (9).
2. The medium speed pulverizer grinding roller sleeve ejection device according to claim 1, further comprising a limiting mechanism, wherein the limiting mechanism comprises a sliding block (11), a spring (12), a push rod (13) and a second lock catch (14), the sliding block (11) is movably connected with the inner side wall of the sliding groove (9), the push rod (13) is fixedly connected to the top of the sliding block (11), the push rod (13) penetrates through the side wall of the sliding groove (9) and extends to the outside of the cross-shaped cross beam (2), the spring (12) is arranged at the top of the sliding block (11), the top of the spring (12) is fixedly connected with the inner side wall of the sliding groove (9), and the second lock catch (14) is fixedly connected to the side wall of the sliding block (11).
3. The medium speed pulverizer grinding roller sleeve ejection device according to claim 1, wherein the support (1) is made of two manganese steel plates with the thickness of 10mm and the diameter of 200 mm.
4. The medium speed pulverizer grinding roller sleeve ejection device according to claim 1, wherein the grapple (4) is made of a manganese steel plate with a thickness of 10mm, a height of 300mm and a width of 20mm by welding.
5. The medium speed pulverizer grinding roller sleeve ejection device according to claim 1, wherein four cross-shaped cross beams (2) are all made of 10 gauge I-steel with the length of 550 mm.
6. The medium speed pulverizer grinding roller sleeve ejection device according to claim 2, wherein the spring (12) is made of stainless steel material, and the spring is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120645518.6U CN215711012U (en) | 2021-03-30 | 2021-03-30 | Medium speed pulverizer grinding roller shell ejecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120645518.6U CN215711012U (en) | 2021-03-30 | 2021-03-30 | Medium speed pulverizer grinding roller shell ejecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215711012U true CN215711012U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120645518.6U Active CN215711012U (en) | 2021-03-30 | 2021-03-30 | Medium speed pulverizer grinding roller shell ejecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215711012U (en) |
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2021
- 2021-03-30 CN CN202120645518.6U patent/CN215711012U/en active Active
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