CN212069110U

CN212069110U - Coal mill frame reinforced structure

Info

Publication number: CN212069110U
Application number: CN201922289480.9U
Authority: CN
Inventors: 李春建; 曾澄光; 彭佩
Original assignee: Guangzhou Cetc Lixin Electric Power Industrial Co ltd
Current assignee: Guangzhou Zhongdian Lixin Thermal Power Co.,Ltd.
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-12-04
Anticipated expiration: 2029-12-17

Abstract

The utility model relates to a coal pulverizer frame reinforced structure, including PMKD and a plurality of fastener. The fixed bottom plate is fixedly connected with a machine base of the coal mill. The fixed bottom plate is used for being fixed on the ground outside the area right below the base bottom plate of the coal mill through a fastener, and the fixed bottom plate is located between the base bottom plate and a slag discharge box of the coal mill. Can not take place when obvious displacement yet at the frame of coal pulverizer, adopt foretell coal pulverizer frame reinforced structure to consolidate the coal pulverizer, PMKD can make the coal pulverizer frame fix on PMKD to can avoid the coal pulverizer frame to rock the layering that appears between the main basis cement of secondary grout cement that leads to and the primary grout and throw off the phenomenon. In addition, because the fixed bottom plate is fixedly arranged on the ground space outside the base plate of the machine seat and close to one side of the deslagging box of the coal mill, the implementation is convenient and reliable, and the normal operation of the equipment is not influenced.

Description

Coal mill frame reinforced structure

Technical Field

The utility model relates to a fixed technical field of coal pulverizer frame especially relates to a coal pulverizer frame reinforced structure.

Background

The coal grinding process of the coal grinding mill is to crush coal blocks into powder. When the coal mill is used, the coal blocks are crushed in a violent process, and if a base bottom plate of a base of the coal mill is in direct contact with the ground and is not fixed with the ground, the coal mill can vibrate violently. The conventional method is that primary grouting main foundation cement below a base bottom plate of a coal mill base is grouted to form secondary grouting cement, and the base bottom plate is fixedly buried in the secondary grouting cement through foundation bolts. However, delamination between the secondary grouting cement and the primary grouting main base cement is likely to occur.

Disclosure of Invention

In view of the foregoing, there is a need to overcome the deficiencies of the prior art and to provide a coal mill stand reinforcement structure that avoids the delamination phenomenon so that the coal mill stand is securely positioned on the ground.

The technical scheme is as follows: a coal mill stand reinforcing structure, comprising: a fixed base plate and a plurality of fasteners; the fixed baseplate is used for being fixedly connected with a machine base of the coal mill, the fixed baseplate is used for passing through the fastener is fixed on the ground outside the area under the machine base plate of the coal mill, and the fixed baseplate is located between the machine base plate and a slag discharging box of the coal mill.

Can not take place when obvious displacement yet at the frame of coal pulverizer, adopt foretell coal pulverizer frame reinforced structure to carry out reinforcement treatment to the frame of coal pulverizer, can make the coal pulverizer frame fix on PMKD to can avoid the coal pulverizer frame to rock the layering that appears between the main basis cement of secondary grout cement that leads to and the primary grout and throw off the phenomenon, structural strength is guaranteed. In addition, because the fixed bottom plate is fixedly arranged on the ground space outside the base plate of the machine seat and close to one side of the deslagging box of the coal mill, the implementation is quite convenient and reliable, and the normal operation of the equipment is not influenced. In the case of sufficient material, tool and personnel preparation, the coal mill is only operated with a relatively short downtime when the fixing base plate is welded in the last step.

Furthermore, the fastener includes rag bolt and nut, PMKD is equipped with the corresponding through-hole of rag bolt, rag bolt buries underground and fixes subaerial, rag bolt passes the through-hole pass through the nut with PMKD links to each other.

Furthermore, a cushion block is arranged between the nut and the fixed bottom plate.

Further, a lock washer is arranged between the cushion block and the nut.

Furthermore, the ground is provided with a bolt hole corresponding to the foundation bolt, the foundation bolt is arranged in the bolt hole, and the bolt hole is filled with building cement.

Further, the building cement is quick-drying high-strength shrinkage-resistant cement.

Further, the fixed bottom plate is connected with the building cement.

Furthermore, the bottom welding of rag bolt has horizontal lacing wire strip, horizontal lacing wire strip is buried underground in the building cement in the bolt hole.

Further, the foundation bolt is connected with a steel bar in the bolt pit in a welding mode.

Further, the fixed bottom plate is used for being welded and fixed with a base of the coal mill.

Drawings

Fig. 1 is a schematic view of a reinforcing structure of a coal mill base according to an embodiment of the present invention;

fig. 2 is a schematic view of a reinforcing structure of a coal mill base according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a fixing bottom plate of a coal mill base reinforcing structure according to an embodiment of the present invention.

Reference numerals:

10. the anti-loosening device comprises a base, 20, a fixed bottom plate, 21, through holes, 30, fasteners, 31, nuts, 32, cushion blocks, 33, anti-loosening washers, 40, bolt pits, 50 and building cement.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.

In one embodiment, referring to fig. 1 or 2, a coal mill stand reinforcing structure includes a stationary base plate 20 and a plurality of fasteners 30. The fixed bottom plate 20 is used for being fixedly connected with a machine base of the coal mill. The fixed bottom plate 20 is further used for being fixed on the ground outside the area right below the base bottom plate of the coal mill through the fastener 30, and the fixed bottom plate 20 is located between the base bottom plate and a slag discharge box of the coal mill.

Can not take place when obvious displacement yet at the frame of coal pulverizer, adopt foretell coal pulverizer frame reinforced structure to carry out reinforcement treatment to the frame of coal pulverizer, can make the coal pulverizer frame fix on PMKD 20 to can avoid the coal pulverizer frame to rock the layering that appears between the main basis cement of secondary grout cement that leads to and the primary grout and throw off the phenomenon, structural strength is guaranteed. In addition, because the fixed bottom plate 20 is fixedly arranged on the ground space outside the base plate of the machine base and close to one side of the deslagging box of the coal mill, the implementation is quite convenient and reliable, and the normal operation of the equipment is not influenced. In the case of adequate material, tool and personnel preparation, the mill is only shut down for the last step of welding the bedplate 20, and the downtime is relatively short (e.g., the bedplate 20 is welded to the bedplate of the mill, and depending on the welding speed and schedule, the entire welding operation can be completed in typically 3 hours).

Further, the fastening member 30 includes an anchor bolt and a nut. The fixing base plate 20 is provided with through holes 21 corresponding to the anchor bolts. The anchor bolts are buried and fixed under the ground, penetrate through the through holes 21 and are connected with the fixed bottom plate 20 through nuts 31. Specifically, a spacer 32 is disposed between the nut 31 and the fixed base plate 20. Further, a lock washer 33 is provided between the spacer 32 and the nut 31. Therefore, the connection effect between the fixed base plate 20 and the foundation bolts is firm, and the foundation bolts can be well prevented from being separated from the bolt pits 40.

Specifically, the ground is provided with bolt holes 40 corresponding to the anchor bolts. The foundation bolts are arranged in the bolt pits 40, and the bolt pits 40 are filled with building cement 50.

Further, the construction cement 50 is a quick-drying type high-strength shrinkage-resistant cement. Different from conventional building cement, the quick-drying high-strength shrinkage-resistant cement is a two-component self-heating grouting material, the maximum strength of the quick-drying high-strength shrinkage-resistant cement can reach 85% within 7 days after grouting, the solidification speed is high, and the strength of the solidified cement is high.

Further, the fixing base plate 20 is connected with the construction cement 50. Thus, the fixing base plate 20 can be stably attached to the ground.

Furthermore, the bottom end of the foundation bolt is welded with a transverse tie bar. The transverse tie bars are embedded in the building cement 50 in the bolt pits 40. So, horizontal lacing wire strip can make rag bolt set up in bolt hole 40 more firmly, can avoid rag bolt to break away from out in the bolt hole 40 betterly.

Further, the foundation bolts are welded and connected with the steel bars in the bolt pits 40. So, the reinforcing bar that once grout in the original basis hole was left can make rag bolt set up in bolt hole 40 more firmly, can avoid rag bolt to break away from out in bolt hole 40 betterly.

In one embodiment, the fixed bottom plate 20 is used for being welded and fixed with a rib plate 10 on a base of a coal mill. Therefore, the welding speed between the base of the coal mill and the fixed bottom plate 20 is high, and the connection effect is stable. Alternatively, the fixed base plate 20 is fixed to the frame of the coal mill by bolting.

Specifically, referring to fig. 3, the thickness of the fixing base plate 20 is 30mm, the depth of the bolt hole 40 is 360mm, and the diameter of the bolt hole 40 is 100 mm. The number of the through holes 21 on the fixing base plate 20 is 10, the number of the anchor bolts is 10, and the number of the bolt pits 40 is 10 correspondingly.

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

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

Claims

1. The utility model provides a coal pulverizer frame reinforced structure which characterized in that includes: a fixed base plate and a plurality of fasteners; the fixed baseplate is used for being fixedly connected with a machine base of the coal mill, the fixed baseplate is used for passing through the fastener is fixed on the ground outside the area under the machine base plate of the coal mill, and the fixed baseplate is located between the machine base plate and a slag discharging box of the coal mill.

2. The coal pulverizer stand reinforcing structure of claim 1, wherein the fastening member includes an anchor bolt and a nut, the fixing base plate is provided with a through hole corresponding to the anchor bolt, the anchor bolt is buried and fixed in the ground, and the anchor bolt passes through the through hole and is connected to the fixing base plate through the nut.

3. The coal pulverizer stand reinforcement structure of claim 2, wherein a spacer is disposed between the nut and the stationary base plate.

4. The coal mill stand reinforcement structure of claim 3, wherein a lock washer is disposed between the spacer and the nut.

5. The coal pulverizer stand reinforcing structure of claim 2, wherein the ground is provided with bolt pits corresponding to the foundation bolts, the foundation bolts are disposed in the bolt pits, and the bolt pits are filled with building cement.

6. The coal mill stand reinforcement structure of claim 5, wherein the construction cement is a quick-dry, high strength, shrinkage resistant cement.

7. The coal mill stand reinforcement structure of claim 5, wherein the stationary base plate is attached to the construction cement.

8. The coal pulverizer stand reinforcing structure of claim 5, wherein the bottom end of the anchor bolt is welded with a transverse tie bar, and the transverse tie bar is buried in the building cement in the bolt pit.

9. The coal pulverizer stand reinforcement structure of claim 5, wherein the anchor bolts are welded to reinforcement bars in bolt pits.

10. The coal mill stand reinforcing structure of any one of claims 1 to 9, wherein the stationary base plate is adapted to be welded to a coal mill stand.