Fracture detection reaction device for vertical mill pull rod

Abstract

The utility model belongs to the field of vertical mill rollers, and particularly relates to a vertical mill pull rod fracture detection reaction device which comprises a vertical mill, the surface of the vertical mill is fixedly connected with a supporting plate, the top of the supporting plate is fixedly connected with a first concave block, an inner cavity of the first concave block is rotatably connected with a vertical mill roller, and the top of the supporting plate is fixedly connected with a second concave block. An inner cavity of the second concave block is rotationally connected with a tensioning hydraulic cylinder, a first tensioning pull rod is arranged at one end of the tensioning hydraulic cylinder, and a second tensioning pull rod is arranged at one end of the first tensioning pull rod. When the second tensioning pull rod is broken due to unstable grinding of the vertical mill roller, the tensioning hydraulic cylinder can drive the first tensioning pull rod to fall down, then the first tensioning pull rod can touch the travel switch, the travel switch is connected with a main power supply of the vertical mill, and the vertical mill roller is driven to rotate. Therefore, the power supply of the vertical mill can be turned off by touching the travel switch by the first tensioning pull rod, and the effects of stopping milling in case of power failure and avoiding expansion of equipment accidents are achieved.

Description

Technical Field

[0001] The utility model relates to the field of vertical mill rolls, in particular to a vertical mill pull rod fracture detection and reaction device. Background Technique

[0002] The vertical mill is an ideal large-scale grinding equipment, which is widely used in industries such as cement, electric power, metallurgy, chemical industry, and non-metallic minerals. It integrates crushing, drying, grinding, classification, and transportation, with high production efficiency. It can grind lump, granular, and powdered raw materials into the required powdered materials. The vertical mill mainly uses an electric motor to drive the grinding table to rotate through a speed reducer. The material falls from the feeding port to the center of the grinding table and moves towards the edge of the grinding table under the action of centrifugal force and is crushed by the grinding roller to achieve grinding.

[0003] In the prior art, during the operation of the vertical mill, the tensioning pull rod plays a role in connecting the tensioning hydraulic cylinder and the vertical mill roll. Through this connection, the pressure applied by the tensioning hydraulic cylinder can be effectively transmitted to the grinding roll, thereby realizing the grinding of the material. During the daily operation of the vertical mill, due to unstable feeding, the operation vibration of the vertical mill roll is relatively large, which in turn affects the working stability of the hydraulic cylinder. The tensioning pull rod often breaks, and the fracture position is basically in the upper-middle part of the pull rod. If the vertical mill is not stopped in time after the tensioning pull rod breaks, it is easy to cause damage to equipment such as the speed reducer, and then it is easy to occur equipment accidents. Content of the Utility Model

[0004] In order to make up for the deficiencies of the prior art, if the vertical mill is not stopped in time after the tensioning pull rod breaks, it is easy to cause damage to equipment such as the speed reducer, and then it is easy to occur equipment accidents. The utility model provides a vertical mill pull rod fracture detection and reaction device.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a vertical mill pull rod fracture detection and reaction device, including a vertical mill. A support plate is fixedly connected to the surface of the vertical mill. A first concave block is fixedly connected to the top of the support plate. A vertical mill roll is rotatably connected to the inner cavity of the first concave block. A second concave block is fixedly connected to the top of the support plate. A tensioning hydraulic cylinder is rotatably connected to the inner cavity of the second concave block. A first tensioning pull rod is arranged at one end of the tensioning hydraulic cylinder. A second tensioning pull rod is arranged at one end of the first tensioning pull rod. A third concave block is fixedly connected to one side of the vertical mill roll. A fixed shaft is fixedly connected to the inner cavity of the third concave block. A rotating block is sleeved on the surface of the fixed shaft. One end of the second tensioning pull rod is fixedly connected to the bottom of the rotating block. A fixed plate is fixedly connected to one side of the first concave block. A travel switch is arranged on the top of the fixed plate.

[0006] Preferably, a first flange is fixedly connected to the surface of the first tension rod, a second flange is fixedly connected to the surface of the second tension rod, and a first bolt is threadedly connected to the inner cavities of the first flange and the second flange.

[0007] Preferably, a stop block is arranged on one side of the fixed shaft, and the diameter of the stop block is larger than that of the fixed shaft.

[0008] Preferably, a first thread groove is formed on the surface of the fixed shaft, a first thread block is threadedly connected to the inner cavity of the first thread groove, and one end of the first thread block is fixedly connected to one side of the stop block.

[0009] Preferably, a second thread groove is formed on the surface of the fixing plate, a second bolt is threadedly connected to the inner cavity of the second thread groove, a third thread groove is formed on the surface of the travel switch, and the surface of the second bolt is threadedly connected to the inner cavity of the third thread groove.

[0010] Preferably, a reinforcing rod is fixedly connected to the bottom of the fixing plate, and one end of the reinforcing rod is fixedly connected to one side of the first concave block.

[0011] Preferably, a fourth thread groove is formed on the surface of the tension hydraulic cylinder, a second thread block is threadedly connected to the inner cavity of the fourth thread groove, and one end of the second thread block is fixedly connected to one end of the first tension rod.

[0012] The beneficial effects of the present utility model are as follows:

[0013] When the second tension rod breaks due to unstable grinding of the vertical mill roller, the tension hydraulic cylinder drives the first tension rod to fall downward. Then, the first tension rod touches the travel switch, which is connected to the main power supply of the vertical mill. Therefore, when the first tension rod touches the travel switch, the power supply of the vertical mill can be turned off. After the grinding stops, the first bolt can be rotated to disengage from the first flange and the second flange, so as to separate the first tension rod and the second tension rod, and take out the second tension rod and the rotating block from the surface of the fixed shaft. Then, a new second tension rod and fixed shaft are replaced and connected to the first tension rod, so that it can continue to be used. It is not only convenient to replace, but also does not need to replace the first tension rod together. It not only shortens the maintenance time, improves the equipment operation rate, but also reduces the labor intensity of maintenance workers, achieving the effect of power-off and grinding stop to avoid the expansion of equipment accidents, and solving the problem that if the vertical mill operation is not stopped in time after the second tension rod breaks, it is easy to cause damage to equipment such as the speed reducer, and then it is easy to occur equipment accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 Is a three-dimensional schematic diagram of the overall device of the present invention;

[0016] Figure 2 Is a sectional view schematic diagram of the tension hydraulic cylinder of the present invention;

[0017] Figure 3 Is a sectional view schematic diagram of the first flange of the present invention;

[0018] Figure 4 Is a sectional view schematic diagram of the stop block of the present invention.

[0019] In the figure: 1, vertical mill; 2, support plate; 3, first concave block; 4, vertical grinding roller; 5, second concave block; 6, tension hydraulic cylinder; 7, first tension pull rod; 8, second tension pull rod; 9, third concave block; 10, fixed shaft; 11, rotating block; 12, fixing plate; 13, travel switch; 14, first flange; 15, second flange; 16, first bolt; 17, stop block; 18, first thread groove; 19, first thread block; 20, second thread groove; 21, third thread groove; 22, second bolt; 23, reinforcing rod; 24, fourth thread groove; 25, second thread block. Detailed implementation manners

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] The following combines the attached Figures 1-4 To further elaborate on this application in detail,

[0022] The embodiment of this application discloses a vertical mill pull rod fracture detection and reaction device. Refer to Figures 1-3, a vertical mill pull rod fracture detection reaction device, including a vertical mill 1, a support plate 2 is fixedly connected to the surface of the vertical mill 1, a first concave block 3 is fixedly connected to the top of the support plate 2, a vertical mill roller 4 is rotatably connected to the inner cavity of the first concave block 3, a second concave block 5 is fixedly connected to the top of the support plate 2, a tensioning hydraulic cylinder 6 is rotatably connected to the inner cavity of the second concave block 5, a first tensioning pull rod 7 is arranged at one end of the tensioning hydraulic cylinder 6, a second tensioning pull rod 8 is arranged at one end of the first tensioning pull rod 7, a third concave block 9 is fixedly connected to one side of the vertical mill roller 4, a fixed shaft 10 is fixedly connected to the inner cavity of the third concave block 9, a rotating block 11 is sleeved on the surface of the fixed shaft 10, and one end of the second tensioning pull rod 8 is fixedly connected to the bottom of the rotating block 11. A fixed plate 12 is fixedly connected to one side of the first concave block 3, and a travel switch 13 is arranged on the top of the fixed plate 12;

[0023] The vertical mill 1 can be connected to the first concave block 3 through the support plate 2, and the first concave block 3 can be connected to the vertical mill roller 4, so that the vertical mill roller 4 can rotate on the upper side of the vertical mill 1, and the vertical mill roller 4 can grind the materials on the upper side of the vertical mill 1. By setting the second concave block 5, it can be used to connect the tensioning hydraulic cylinder 6, so that the tensioning hydraulic cylinder 6 can rotate, and the tensioning hydraulic cylinder 6 can be connected to the first tensioning pull rod 7 and the second tensioning pull rod 8, and drive the first tensioning pull rod 7 and the second tensioning pull rod 8 to rotate together. The third concave block 9 is connected to one side of the vertical mill roller 4 and can be used to connect the rotating block 11, and the rotating block 11 can be connected to the second tensioning pull rod 8, which enables the tensioning hydraulic cylinder 6 to drive the vertical mill roller 4 to rotate through the first tensioning pull rod 7 and the second tensioning pull rod 8, so as to achieve the effect of contacting the upper side of the vertical mill 1 and grinding. Since the first tensioning pull rod 7 and the second tensioning pull rod 8 are prone to fracture during the grinding of the vertical mill roller 4, the broken first tensioning pull rod 7 will fall downwards. The fixed plate 12 can be used to support the travel switch 13, so that the travel switch 13 can be located on one side of the first tensioning pull rod 7, which enables the first tensioning pull rod 7 to touch the travel switch 13 when it falls. The travel switch 13 can be electrically connected to the main power supply of the vertical mill 1 and the vertical mill roller 4. Therefore, when the first tensioning pull rod 7 breaks and touches the travel switch 13, it can directly cut off the main power supply of the vertical mill 1 and the vertical mill roller 4 in time, realize power-off and stop grinding, and avoid the expansion of equipment accidents.

[0024] Refer to Figure 3The surface of the first tensioning rod 7 is fixedly connected to the first flange 14, and the surface of the second tensioning rod 8 is fixedly connected to the second flange 15. The inner cavities of the first flange 14 and the second flange 15 are threadedly connected to the first bolt 16. The first bolt 16 can be connected to the inside of the first flange 14 and the second flange 15 to achieve the effect of connecting the first tensioning rod 7 and the second tensioning rod 8. Since the first tensioning rod 7 and the second tensioning rod 8 are often prone to breakage when the vertical grinding roller 4 is working, the first bolt 16 can be disassembled to separate the first tensioning rod 7 and the second tensioning rod 8, thereby achieving the effect of replacing the second tensioning rod 8. Not only is the replacement convenient, but there is no need to replace it together with the first tensioning rod 7, which shortens the maintenance time, improves the equipment operation rate, and reduces the labor intensity of maintenance workers.

[0025] Reference Figure 4 A stopper 17 is provided on one side of the fixed shaft 10. The diameter of the stopper 17 is larger than the diameter of the fixed shaft 10. The stopper 17 can limit and block the rotating block 11, so that when the rotating block 11 rotates on the surface of the fixed shaft 10, it is not easy to separate from the fixed shaft 10, thereby making the rotating block 11 more stable.

[0026] Reference Figure 4 A first thread groove 18 is provided on the surface of the fixed shaft 10, and the inner cavity of the first thread groove 18 is threadedly connected to a first thread block 19. One end of the first thread block 19 is fixedly connected to one side of the stopper 17, and the first thread block 19 can rotate inside the first thread groove 18, thereby achieving the effect of disengaging from the first thread groove 18, and the first thread block 19 is also connected to the stopper 17, so that the stopper 17 can be stabilized on one side of the fixed shaft 10, and at the same time can also drive the stopper 17 to disengage from the fixed shaft 10, so that the stopper 17 will not hinder the rotating block 11 from disengaging from the fixed shaft 10.

[0027] Reference Figure 3 A second thread groove 20 is provided on the surface of the fixing plate 12, and the inner cavity of the second thread groove 20 is threadedly connected to a second bolt 22. A third thread groove 21 is provided on the surface of the limit switch 13, and the surface of the second bolt 22 is threadedly connected to the inner cavity of the third thread groove 21. The second bolt 22 can be connected to the inside of the second thread groove 20 and the third thread groove 21, thereby achieving the effect of fixing the limit switch 13, so that the limit switch 13 can be fixed on the top of the fixing plate 12. At the same time, the second bolt 22 can also be disengaged from the third thread groove 21 by rotation, thereby facilitating the disassembly of the limit switch 13.

[0028] Reference Figure 3, a reinforcing rod 23 is fixedly connected to the bottom of the fixed plate 12, and one end of the reinforcing rod 23 is fixedly connected to one side of the first concave block 3. The reinforcing rod 23 can support and reinforce the bottom of the fixed plate 12, so that the fixed plate 12 is not prone to breakage and damage on one side of the first concave block 3.

[0029] Refer to Figure 3 , a fourth thread groove 24 is formed on the surface of the tensioning hydraulic cylinder 6, and a second thread block 25 is threadedly connected to the inner cavity of the fourth thread groove 24. One end of the second thread block 25 is fixedly connected to one end of the first tensioning rod 7. The second thread block 25 can be connected to the inside of the fourth thread groove 24, so as to achieve the effect of fixedly connecting the first tensioning rod 7 and the tensioning hydraulic cylinder 6. When the first tensioning rod 7 breaks, the second thread block 25 can be rotated to disengage from the fourth thread groove 24 to replace the first tensioning rod 7.

[0030] Working principle: When using this device, first, the tensioning hydraulic cylinder 6 can drive the vertical grinding roller 4 to rotate through the first tensioning rod 7 and the second tensioning rod 8 to grind the materials on the upper side of the vertical mill 1. When the second tensioning rod 8 breaks due to unstable grinding, the tensioning hydraulic cylinder 6 will drive the first tensioning rod 7 to fall downward. Then, the first tensioning rod 7 will touch the travel switch 13. The travel switch 13 is connected to the main power supply of the vertical mill 1. Therefore, when the first tensioning rod 7 touches the travel switch 13, the power supply of the vertical mill 1 can be turned off to achieve power-off and stop grinding, avoiding the expansion of equipment accidents. After stopping grinding, the first bolt 16 can be rotated to disengage from the first flange 14 and the second flange 15 to separate the first tensioning rod 7 and the second tensioning rod 8, and the second tensioning rod 8 and the rotating block 11 can be taken out from the surface of the fixed shaft 10, and a new second tensioning rod 8 and fixed shaft 10 can be replaced and connected to the first tensioning rod 7, so that it can continue to be used. It is not only convenient to replace, but also does not need to replace the first tensioning rod 7 together, which not only shortens the maintenance time, improves the equipment operation rate, but also reduces the labor intensity of maintenance workers. Thus, the problem that if the second tensioning rod 8 breaks and the vertical mill operation is not stopped in time, it is easy to cause damage to equipment such as the reducer, and then it is easy to have equipment accidents can be solved.

[0031] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A vertical mill pull rod fracture detection reaction device, characterized in that: It includes a vertical mill (1), a support plate (2) is fixedly connected to the surface of the vertical mill (1), a first concave block (3) is fixedly connected to the top of the support plate (2), a vertical grinding roller (4) is rotatably connected to the inner cavity of the first concave block (3), a second concave block (5) is fixedly connected to the top of the support plate (2), a tensioning hydraulic cylinder (6) is rotatably connected to the inner cavity of the second concave block (5), a first tensioning pull rod (7) is arranged at one end of the tensioning hydraulic cylinder (6), a second tensioning pull rod (8) is arranged at one end of the first tensioning pull rod (7), a third concave block (9) is fixedly connected to one side of the vertical grinding roller (4), a fixed shaft (10) is fixedly connected to the inner cavity of the third concave block (9), a rotating block (11) is sleeved on the surface of the fixed shaft (10), and one end of the second tensioning pull rod (8) is fixedly connected to the bottom of the rotating block (11). A fixed plate (12) is fixedly connected to one side of the first concave block (3), and a travel switch (13) is arranged on the top of the fixed plate (12).

2. The reaction device for detecting the breakage of the vertical mill tie rod according to claim 1, wherein: A first flange (14) is fixedly connected to the surface of the first tensioning pull rod (7), a second flange (15) is fixedly connected to the surface of the second tensioning pull rod (8), and a first bolt (16) is threadedly connected to the inner cavities of the first flange (14) and the second flange (15).

3. The reaction device for detecting the breakage of the vertical mill tie rod according to claim 1, characterized in that: A stop block (17) is arranged on one side of the fixed shaft (10), and the diameter of the stop block (17) is larger than the diameter of the fixed shaft (10).

4. The reaction device for detecting the breakage of the vertical mill tie rod according to claim 3, characterized in that: A first thread groove (18) is opened on the surface of the fixed shaft (10), a first thread block (19) is threadedly connected to the inner cavity of the first thread groove (18), and one end of the first thread block (19) is fixedly connected to one side of the stop block (17).

5. The reaction device for detecting the breakage of the vertical mill tie rod according to claim 1, wherein: A second thread groove (20) is opened on the surface of the fixed plate (12), a second bolt (22) is threadedly connected to the inner cavity of the second thread groove (20), a third thread groove (21) is opened on the surface of the travel switch (13), and the surface of the second bolt (22) is threadedly connected to the inner cavity of the third thread groove (21).

6. The reaction device for detecting the breakage of the vertical mill tie rod according to claim 1, characterized in that: A reinforcing rod (23) is fixedly connected to the bottom of the fixed plate (12), and one end of the reinforcing rod (23) is fixedly connected to one side of the first concave block (3).

7. The reaction device for detecting the breakage of the vertical mill tie rod according to claim 1, wherein: A fourth thread groove (24) is opened on the surface of the tensioning hydraulic cylinder (6), a second thread block (25) is threadedly connected to the inner cavity of the fourth thread groove (24), and one end of the second thread block (25) is fixedly connected to one end of the first tensioning pull rod (7).

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