Movable foundation bolt for speed reducer of coal mill in power plant

Abstract

The invention discloses a movable foundation bolt for a speed reducer of a coal mill in a power plant, which comprises a bolt unit, an underground section and a welding section connected with the underground section. The check block unit comprises a first check block, a clamping assembly arranged on the first check block, a limiting assembly arranged on the first check block and a second check block symmetrically distributed with the first check block. The welding unit comprises a first welding assembly welded to the welding section, a second welding assembly for welding the first check block and the second check block, and a third welding assembly welded to the second welding assembly. According to the movable foundation bolt for the speed reducer of the coal mill in the power plant, matched connection of the first check block, the second check block and the welding section is relatively stable, at the moment, a worker only needs to limit one of the bolt unit, the first check block and the second check block, welding can be conducted, welding operation is flexible, welding is firmer, practicability is high in actual application, and the movable foundation bolt is suitable for popularization and application. Meanwhile, the safety performance is effectively improved, the service life is effectively prolonged, material waste is reduced, and cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of anchor bolts, and in particular to a movable anchor bolt for a coal mill reducer in a power plant. Background Art

[0002] Anchor bolts are screw rods used to fasten equipment to concrete foundations. They are generally used in infrastructure such as railways, highways, power companies, factories, mines, bridges, tower cranes, large-span steel structures and large buildings, and have strong stability. Among them, movable anchor bolts are also called long anchor bolts, which are used to fix heavy machinery and equipment with strong vibration and impact. For heavy machinery and equipment such as coal mill reducers in thermal power plants, this type of structural anchor bolts are generally used. In a long-period vibration and impact working environment, the long-rod anchor bolts are severely damaged.

[0003] Traditional long-rod anchor bolt processing uses an entire Φ130mm long 2100mm round steel bar for integrated processing, which results in large material waste, long processing cycle, high difficulty and extremely high cost. The market now generally uses long-rod anchor bolts with threaded connection structure, which meets the economic efficiency of manufacturing and processing, but the strength and stability of the connection structure are difficult to meet the environmental requirements. Even if some manufacturers have optimized the long-rod anchor bolts with threaded connection structure and welded the root, it is still difficult to meet the requirements of harsh working conditions. Summary of the invention

[0004] In view of the problems that the movable anchor bolts of the existing coal mill reducer of a power plant are difficult to process and have high processing costs, the present invention is proposed.

[0005] Therefore, the present invention provides a movable anchor bolt for a coal mill reducer in a power plant, the purpose of which is to solve the technical problems of great difficulty and high cost in processing the anchor bolt.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: comprising a bolt unit, a block unit, and a welding unit.

[0007] The bolt unit includes an underground section and a welding section connected to the underground section.

[0008] The block unit comprises a block 1, a clamping assembly arranged on the block 1, a limiting assembly arranged on the block 1, and a block 2 symmetrically distributed with the block 1.

[0009] The welding unit comprises a welding component 1 welded on the welding section, a welding component 2 welded on the stopper 1 and the stopper 2, and a welding component 3 welded on the welding component 2.

[0010] As a preferred solution of the movable anchor bolt of the power plant coal mill reducer described in the present invention, wherein: a clamping ring groove is provided on the welding section, a limiting ring groove is provided on the welding section; and a limiting clamping groove is provided on the inner wall of the limiting ring groove.

[0011] As a preferred solution of the movable anchor bolts of the power plant coal mill reducer described in the present invention, the block is provided with a through groove, the block is provided with a clamping groove connected to the through groove, and one side surface of the block is provided with an installation groove connected to the clamping groove and used to install the limit assembly.

[0012] As a preferred solution of the movable anchor bolt of the power plant coal mill reducer of the present invention, the clamping assembly includes a connecting arc plate arranged on the stopper 1, and a clamping block arranged on the connecting arc plate.

[0013] As a preferred solution of the movable anchor bolts of the power plant coal mill reducer described in the present invention, the cross-sectional shape of the clamping block includes a connecting edge connected to the connecting arc plate, an arc edge arranged on the connecting edge, and a connecting arc edge arranged on the arc edge and connected to the connecting edge.

[0014] As a preferred solution of the movable anchor bolts of the power plant coal mill reducer described in the present invention, the limit assembly includes a limit member 1 arranged in the installation groove, a limit member 2 arranged on the limit member 1, and a limit block arranged at the connection between the limit member 1 and the limit member 2 and cooperated to extend into the limit slot.

[0015] As a preferred solution of the movable anchor bolt of the power plant coal mill reducer described in the present invention, the cross-sectional shape of the limiting member 2 includes a common edge connected to the limiting member 1, a clamping edge arranged on the common edge, a boss edge arranged on the clamping edge, and an arc edge arranged on the boss edge and connected to the common edge.

[0016] As a preferred solution of the movable anchor bolt of the power plant coal mill reducer described in the present invention, the structure of the second block is the same as that of the first block, and the second block is also provided with an opening groove for the clamping assembly to extend into, and a limiting groove connected to the opening groove is provided in the second block.

[0017] As a preferred solution of the movable anchor bolts of the power plant coal mill reducer described in the present invention, the welding assembly 1 includes a welding ring welded on the limiting member 2 and the inner wall of the limiting ring groove, a welding connection section 1 welded on the limiting member 1, and a welding connection section 2 welded on the limiting member 2.

[0018] As a preferred solution of the movable anchor bolts of the coal mill reducer of a power plant described in the present invention, the welding component 2 includes a welding strip welded to the welding component 1 and welded to the stopper 1 and the stopper 2, and a welding connecting strip welded to the open groove.

[0019] The beneficial effects of the present invention are as follows: a bolt unit, a block unit, and a welding unit are provided, and the clamping assembly is fitted into the block two so that the block one and the block two cooperate and press the welding section, and at the same time the limiting assembly stably limits the welding section, so that the block one, the block two and the welding section are relatively stable. At this time, the worker only needs to limit one of the bolt unit, the block one and the block two to carry out welding, and the welding section and the limiting assembly are welded at the fitting point to form the welding assembly one, and the welding gap between the block one and the block two is welded and reinforced to form the welding assembly two and the welding assembly three, so that the welding operation is flexible, the welding is more firm, and the impact-resistant connection strength between the block one and the block two is increased. It has high practicality in actual use, and at the same time effectively improves the safety performance and service life, reduces material waste, and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The overall structure of the first embodiment of the present invention is shown in FIG. Figure 1 .

[0022] Figure 2 The overall structure of the first embodiment of the present invention is shown in FIG. Figure 2 .

[0023] Figure 3 It is a partially enlarged schematic diagram of the bolt unit in the first embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of the installation structure of the limit assembly in the first embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the installation structure of the stopper 2 in the first embodiment of the present invention.

[0026] Figure 6 It is a structural schematic diagram of the stopper 1 in the second embodiment of the present invention.

[0027] Figure 7 It is a schematic diagram of the installation structure of the clamping assembly in the second embodiment of the present invention.

[0028] Figure 8 It is a schematic diagram of the structure of the limiting component in the second embodiment of the present invention.

[0029] Fig. 9 This is a schematic diagram of the installation structure of the welding unit in the third embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1, reference Figure 1-5 , which is the first embodiment of the present invention, provides a movable anchor bolt for a coal mill reducer in a power plant, and the device includes a bolt unit 100, a block unit 200, and a welding unit 300. By welding the bolt unit 100 and the block unit 200 to form the welding unit 300, the connection between the bolt unit 100 and the block unit 200 is more secure, and can be applied to equipment with strong vibration and impact. The overall structure of the bolt is formed by the welding process, avoiding the use of a whole Φ130mm long 2100mm round steel bar for processing, reducing material waste, saving costs, and reducing processing cycles and processing difficulties.

[0035] The bolt unit 100 includes a ground section 101 and a welding section 102 connected to the ground section 101; the ground section 101 and the welding section 102 are an integrally formed structure; the ground section 101 and the welding section 102 directly use a bolt body with a diameter of 50 mm, and by welding the ground section 101 and the block unit 200, it is avoided to use a whole Φ130mm long 2100mm round steel bar for processing, reducing material waste, saving costs, and reducing processing cycles and processing difficulties. The traditional long-rod anchor bolt is 5,000 yuan / piece, the general threaded long-rod anchor bolt is 2,050 yuan / piece, and the processing cost of the movable anchor bolt of the power plant coal mill reducer designed in this design is 1,950 yuan / piece.

[0036] The block unit 200 includes a block 1 201, a clamping assembly 202 arranged on the block 1 201, a limiting assembly 203 arranged on the block 1 201, and a block 2 204 symmetrically distributed with the block 1 201; and a welding gap for welding is reserved between the block 1 201 and the block 2 204, and the impact-resistant connection strength between the block 1 201 and the block 2 204 is increased by the reserved welding gap; the clamping assembly 202 is provided with two groups, and the two groups of clamping assemblies 202 are both installed on the block 1 201; The two sets of clamping components 202 can achieve stable fixation of block 1 201 and block 2 204. The user does not need to use hands to press and fix block 1 201 and block 2 204 during welding, freeing both hands. It is also convenient to rotate and change the direction of block 1 201, block 204 and welding section 102 for subsequent welding. There are two sets of limit components 203, which are respectively installed on block 1 201 and block 2 204, and both can stably limit and press the welding section 102. Block 1 201 and block 2 204 are formed on a cuboid with dimensions of 61 mm in length, 116 mm in width and 61 mm in height; a distance of 22 mm in height is machined on the cuboid to form block 1 201 and block 2 204 downwards respectively; after the processing, the dimensions of block 1 201 are 55 mm in length, 110 cm in width and 44 mm in height; providing sufficient margin can avoid the influence of welding deviation, and when the welding is offset, the margin left on block 1 201 can be cut and polished to finally form a standard size of 55 mm in length, 110 cm in width and 44 mm in height.

[0037] The welding unit 300 includes a welding assembly 1 301 welded on the welding section 102, a welding assembly 2 302 welded on the stopper 1 201 and the stopper 2 204, and a welding assembly 3 303 welded on the welding assembly 2 302. Among them, the welding assembly 1 301 and the welding assembly 2 302 are both formed after welding, and are not the structure of the bolt as a whole; the bolt unit 100 and the stopper unit 200 are welded and connected by the welding assembly 1 301 to form the bolt as a whole structure, and the stopper 1 201 and the stopper 2 204 are also welded and connected, so that the stopper 1 201 and the stopper 2 204 form a complete integrated structure, and the welding gap between the stopper 1 201 and the stopper 2 204 is filled by the welding assembly 2 302, which further strengthens the stability of the connection between the stopper 1 201 and the stopper 2 204, and can also indirectly strengthen the connection stability of the welding assembly 1 301, and improve the seismic performance of the bolt as a whole structure. The strength and stability of the general threaded long-rod anchor bolt connection structure cannot meet the requirements of the harsh working environment of the power plant. The connection strength of the split structure of the block 1 201 and the block 2 204 of the block unit 200 and the fully welded structure design of the bolt unit 100 are better than those of the general fully welded long-rod anchor bolt. It is impact-resistant and has a long service life.

[0038] During use, the clamping assembly 202 is engaged and inserted into the block 204, so that the block 1 201 and the block 204 cooperate and press the welding section 102, and at the same time, the limiting assembly 203 stably limits the welding section 102, so that the block 1 201, the block 204 and the welding section 102 are relatively stable. At this time, the worker only needs to limit one part of the bolt unit 100, the block 1 201 and the block 204 to carry out welding, and the welding section 102 and the limiting assembly 203 are welded at the matching position to form the welding assembly 1 301, and the welding gap between the block 1 201 and the block 2 204 is welded and reinforced to form the welding assembly 2 302 and the welding assembly 3 303, so that the welding operation is flexible and the welding is more firm, and the impact-resistant connection strength between the block 1 201 and the block 2 204 is increased. It has high practicality in actual use, and effectively improves the safety performance and service life, reduces material waste, and saves costs.

[0039] Example 2, reference Figure 1-8, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: when the arc edge 202d is pressed against the edge of the opening groove 204a, the arc edge 202d is deformed and simultaneously extends into the limiting groove 204b, and the limiting groove 204b clamps and limits the clamping block 202b; the width of the opening groove 204a is smaller than the length of the connecting edge 202c, thereby avoiding the separation of the clamping block 202b and the limiting groove 204b, making the connection between the second stopper 204 and the first stopper 201 more stable and convenient for welding; at the same time, the limiting groove 204b The inner circumferences of the positioning member 1 203a and the limiting member 2 203b are both pressed together in the limiting ring groove 102b, and the welding section 102 is more stably clamped in the stop block 1 201 and the stop block 2 204 through the limiting clamping between the limiting block 203c and the limiting clamping groove 102c, and the limiting member 1 203a and the limiting member 2 203b and the limiting ring groove 102b, thereby reducing the misalignment and deviation during the welding process; and the limiting clamping can pre-distribute a part of the stress, reduce the stress concentration during the welding process, and improve the sealing and stability of the welding connection.

[0040] Compared with the first embodiment, the welding section 102 is provided with a clamping ring groove 102a, and the welding section 102 is provided with a limiting ring groove 102b; the inner wall of the limiting ring groove 102b is provided with a limiting clamping groove 102c. The clamping ring groove 102a and the limiting ring groove 102b are arranged side by side, and the limiting ring groove 102b is located on the side of the clamping ring groove 102a facing the ground section 101.

[0041] Preferably, the stopper 201 is provided with a through groove 201a, the stopper 201 is provided with a clamping groove 201b connected with the through groove 201a, and the side of the stopper 201 is provided with an installation groove 201c connected with the clamping groove 201b and used to install the limit assembly 203. The length of the clamping ring groove 102a is equal to the remaining length of the through groove 201a, and the clamping ring groove 102a can be stably clamped by the through groove 201a, and the shoulders formed on both sides of the clamping ring groove 102a are respectively pressed on the clamping grooves 201b on both sides, thereby improving the stability of the stopper 201 and the stopper 204 in clamping the bolt unit 100.

[0042] Furthermore, the clamping assembly 202 includes a connecting arc plate 202a disposed on the first stopper 201 and a clamping block 202b disposed on the connecting arc plate 202a. The clamping block 202b is clamped in the second stopper 204 to stably limit and lock the first stopper 201 and the second stopper 204.

[0043] In particular, the cross-sectional shape of the clamping block 202b includes a connecting edge 202c connected to the connecting arc plate 202a, an arc edge 202d arranged on the connecting edge 202c, and a connecting arc edge 202e arranged on the arc edge 202d and connected to the connecting edge 202c. The length of the connecting edge 202c is greater than the length of the connecting arc plate 202a edge connected thereto, and the connecting arc edge 202e is aligned with the edge of the connecting arc plate 202a close to the symmetry axis of the first block 201. When installed, the connecting arc edge 202e contacts the second block 204, and is deformed under the action of the second block 204, and smoothly enters the second block 204 to cooperate with the second block 204.

[0044] Preferably, the limiting assembly 203 includes a limiting member 203a disposed in the installation groove 201c, a limiting member 203b disposed on the limiting member 203a, and a limiting block 203c disposed at the connection between the limiting member 203a and the limiting member 203b and cooperating to extend into the limiting slot 102c. The inner circumferences of the limit piece 1 203a and the limit piece 2 203b are both pressed together in the limit ring groove 102b. Through the limit block 203c and the limit groove 102c, and the limit piece 1 203a and the limit piece 2 203b and the limit ring groove 102b, the welding section 102 is more stably clamped in the stop block 1 201 and the stop block 2 204, reducing the misalignment and deviation during the welding process; and the limit clamping can pre-allocate part of the stress, reduce the stress concentration during the welding process, and improve the sealing, stability and safety of the welding connection.

[0045] Furthermore, the cross-sectional shape of the second stopper 203b includes a common edge 203d connected to the first stopper 203a, a pressing edge 203e disposed on the common edge 203d, a boss edge 203f disposed on the pressing edge 203e, and an arc edge 203g disposed on the boss edge 203f and connected to the common edge 203d. The pressing edge 203e is pressed in the stopper ring groove 102b, and the height of the boss edge 203f is less than the depth of the stopper ring groove 102b, thereby ensuring that a welding height difference for welding is formed between the upper end of the boss edge 203f and the inner wall of the stopper ring groove 102b, making welding more convenient and more secure.

[0046] Furthermore, the block 204 has the same structure as the block 1 201, and the block 204 is also provided with an opening groove 204a for the clamping assembly 202 to extend into, and a limiting groove 204b connected to the opening groove 204a is provided in the block 204. The shape of the limiting groove 204b is the same as that of the clamping block 202b; when the arc edge 202d is pressed against the edge of the opening groove 204a, the arc edge 202d is deformed and extends into the limiting groove 204b at the same time, and the limiting groove 204b clamps and limits the clamping block 202b; the width of the opening groove 204a is less than the length of the connecting edge 202c, so as to avoid the separation of the clamping block 202b and the limiting groove 204b, so that the connection between the block 204 and the block 1 201 is more stable, which is convenient for welding.

[0047] The remaining structures are the same as those of Example 1.

[0048] Example 3, reference Figure 1-9 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: a welding assembly 1 301 and a welding assembly 2 302 are formed during the welding process. In addition to being able to perform stable welding between the welding section 102 and the limiting assembly 203, the gap between the block 1 201 and the block 2 204 can also be filled, making the connection between the block 1 201 and the block 2 204 more secure. At the same time, the welding assembly 2 302 further fills the gap between the opening groove 204a and the connecting arc plate 202a, further strengthening the connection between the block 1 201 and the block 2 204, and can effectively prevent the separation of the block 1 201 and the block 2 204 caused by vibration, thereby improving the service life of the device under strong vibration.

[0049] Compared with Example 2, further, the welding assembly 1 301 includes a welding ring 301a welded on the inner wall of the limiting member 203b and the limiting ring groove 102b, a welding connection section 1 301b welded on the limiting member 1 203a, and a welding connection section 2 301c welded on the limiting member 203b. The setting of the welding connection section 1 301b and the welding connection section 2 301c stably connects the stopper 204 with the limiting assembly 203 set on the stopper 1 201, and also further welds the stopper 204 with the stopper 1 201, so that the connection between the stopper 204 and the stopper 1 201 is more stable.

[0050] Preferably, the welding assembly 2 302 includes a welding strip 302b welded to the welding assembly 1 301 and welded to the stopper 1 201 and the stopper 2 204, and a welding connecting strip 302c welded in the opening groove 204a. During the welding process, the welding strip melts and flows into the opening groove 204a to form the welding connecting strip 302c. The welding connecting strip 302c fills the gap between the opening groove 204a and the connecting arc plate 202a, so that the limiting and connection between the connecting arc plate 202a and the stopper 2 204 are more stable, and the connection between the stopper 1 201 and the stopper 2 204 is more firm, which can effectively prevent the separation of the stopper 1 201 and the stopper 2 204 caused by vibration, thereby improving the service life of the device under strong vibration; and a clearance groove 302d for making way for the connecting arc plate 202a is formed on the welding strip 302b.

[0051] The remaining structure is the same as that of Example 2.

[0052] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0053] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A movable anchor bolt for a coal mill reducer in a power plant, characterized in that: include, A bolt unit (100) comprises a ground-entering section (101) and a welding section (102) connected to the ground-entering section (101); A block unit (200) comprises a block 1 (201), a clamping assembly (202) arranged on the block 1 (201), a limiting assembly (203) arranged on the block 1 (201), and a block 2 (204) symmetrically distributed with respect to the block 1 (201); and, The welding unit (300) comprises a welding component 1 (301) welded on the welding section (102), a welding component 2 (302) welded on the stopper 1 (201) and the stopper 2 (204), and a welding component 3 (303) welded on the welding component 2 (302).

2. The movable anchor bolt for the coal mill reducer of a power plant according to claim 1, characterized in that: The welding section (102) is provided with a clamping ring groove (102a), and the welding section (102) is provided with a limiting ring groove (102b); the inner wall of the limiting ring groove (102b) is provided with a limiting clamping groove (102c).

3. The movable anchor bolt for the coal mill reducer of a power plant according to claim 2, characterized in that: The stopper one (201) is provided with a through groove (201a), the stopper one (201) is provided with a clamping groove (201b) connected to the through groove (201a), and the side surface of the stopper one (201) is provided with an installation groove (201c) connected to the clamping groove (201b) and used for installing the limit assembly (203).

4. The movable anchor bolt for the coal mill reducer of a power plant according to claim 3 is characterized in that: The clamping assembly (202) comprises a connecting arc plate (202a) arranged on the stopper one (201), and a clamping block (202b) arranged on the connecting arc plate (202a).

5. The movable anchor bolt for the coal mill reducer of a power plant according to claim 4, characterized in that: The cross-sectional shape of the clamping block (202b) comprises a connecting edge (202c) connected to the connecting arc plate (202a), an arc edge (202d) arranged on the connecting edge (202c), and a connecting arc edge (202e) arranged on the arc edge (202d) and connected to the connecting edge (202c).

6. The movable anchor bolt for the coal mill reducer of a power plant according to claim 5, characterized in that: The limiting assembly (203) comprises a limiting member 1 (203a) arranged in the installation groove (201c), a limiting member 2 (203b) arranged on the limiting member 1 (203a), and a limiting block (203c) arranged at the connection between the limiting member 1 (203a) and the limiting member 2 (203b) and extending into the limiting slot (102c).

7. The movable anchor bolt for the coal mill reducer of a power plant according to claim 6, characterized in that: The cross-sectional shape of the second limiting member (203b) includes a common edge (203d) connected to the first limiting member (203a), a clamping edge (203e) arranged on the common edge (203d), a boss edge (203f) arranged on the clamping edge (203e), and an arc edge (203g) arranged on the boss edge (203f) and connected to the common edge (203d).

8. The movable anchor bolt for the coal mill reducer of a power plant according to claim 7, characterized in that: The second stopper (204) has the same structure as the first stopper (201), and the second stopper (204) is also provided with an opening groove (204a) for the clamping assembly (202) to extend into, and the second stopper (204) is provided with a limiting groove (204b) connected to the opening groove (204a).

9. The movable anchor bolt for the coal mill reducer of a power plant according to claim 8, characterized in that: The welding assembly one (301) comprises a welding ring (301a) welded to the limiting member two (203b) and the inner wall of the limiting ring groove (102b), a welding connection section one (301b) welded to the limiting member one (203a), and a welding connection section two (301c) welded to the limiting member two (203b).

10. The movable anchor bolt for the coal mill reducer of a power plant according to claim 9, characterized in that: The welding component 2 (302) includes a welding strip (302b) welded to the welding component 1 (301) and welded to the stopper 1 (201) and the stopper 2 (204), and a welding connection strip (302c) welded in the opening groove (204a).

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