Hanging beam for grinding piece of grinding machine

Abstract

The utility model relates to the technical field of lifting appliances, in particular to a grinding piece lifting beam of a mill. The grinding piece lifting beam of the mill further comprises at least one lifting structure which is arranged on the frame and used for lifting a grinding piece. Each lifting structure comprises a lifting appliance used for fixing the grinding piece and a lifting device used for lifting the grinding piece. And the first driving assembly is used for driving the lifting appliance to move relative to the inlet of the mill. The hoist is arranged on the frame, the frame is fixed at the inlet of the mill, a grinding piece can be hoisted in the horizontal direction and the vertical direction through the hoist, a grinding ball can be stably and vertically taken out of and installed in the mill through the hoist, and the grinding ball does not need to be disassembled and assembled through direct cooperation of a truck crane and a maintainer any more; potential safety hazards caused by man-vehicle cooperation during previous operation are completely avoided, and safety benefits are improved; and the lifting of seven grinding balls at present only needs about 30 minutes, which is at least 2 hours faster than the original lifting, so that the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slings, in particular to a lifting beam for a grinding part of a mill. Background Art

[0002] During the maintenance of the coal-injected mill, it is necessary to open the entrance on the surface of the mill and lift the grinding parts out of the mill from the entrance. Due to the limited height of the mill maintenance door, each time the grinding balls are disassembled and assembled, it is necessary to use manpower and a truck crane to remove the grinding balls. When using the truck crane, the grinding balls need to be lifted at an angle to be lifted out. This poses a great operational risk to the maintenance personnel during the maintenance process, and the maintenance efficiency is low and time-consuming, which creates difficulties in both maintenance safety and efficiency.

[0003] Currently, the following problems exist when lifting grinding balls: 1. Each grinding ball weighs approximately 3.8 tons and has a diameter of 1150mm. There is a risk of it falling during the disassembly and assembly process. 2. The mobile crane lifts the grinding balls at an angle and has a telescopic arm. When lifting heavy objects, there is a high risk for both the personnel who cooperate with the lifting of the balls and the mobile crane itself. 3. When maintenance personnel cooperate with the rolling lifting of grinding balls inside the mill, there is a risk of bruises and squeeze injuries. 4. When lifting the grinding balls, the mobile crane will collide with the guide plate base and the mill body, which can easily cause damage to the guide plate and the mill body. 5. The disassembly and assembly of the grinding balls takes too long, approximately 2.5-3 hours, which affects maintenance efficiency and production. Utility Model Content

[0004] In view of this, the purpose of the present invention is to propose a mill grinding parts lifting beam to solve the technical problems of low maintenance efficiency and high operation risk in the prior art when lifting grinding balls.

[0005] Based on the above purpose, the utility model provides a mill grinding piece hanging beam, comprising:

[0006] frame;

[0007] The mill grinding piece lifting beam further comprises: at least one lifting structure provided on the frame for lifting the grinding piece, the lifting structure comprising:

[0008] a hanger for fixing the grinding member;

[0009] a first drive assembly for driving the spreader to move relative to the inlet of the mill so as to extend the spreader into or out of the inlet;

[0010] The second driving assembly is used to drive the sling to raise or lower its height relative to the ground, so that the sling can lift or lower the grinding piece.

[0011] As a preferred technical solution of the present invention, the mill grinding piece hanging beam further includes a fixing structure for fixing the frame so that one end of the frame passes through the inlet and extends to the interior of the mill.

[0012] As an optimal technical solution of the present invention, the sling is a hook of a hoist, and a track for the hoist to slide is provided at the lower end of the frame. The hoist drives the hook to move along the track to realize the movement of the first drive component, and the hoist drives the grinding part to rise and fall through the hook to realize the movement of the second drive component.

[0013] As a preferred technical solution of the present invention, the fixing structure includes: a plurality of first lifting ears provided on the left side of the upper end of the frame, and the first lifting ears are connected to a first connecting member.

[0014] As an optimal technical solution of the present invention, the fixing structure also includes: a mounting plate arranged in the middle of the upper end of the frame, the mounting plate having a first mounting hole, a second connecting member being arranged in the first mounting hole, and one end of the second connecting member being connected to the outer wall of the grinder.

[0015] As an optimal technical solution of the present invention, the grinder is provided with an outlet on the other side relative to the inlet, and the right end of the frame is mounted on the outlet, thereby forming three supports in the length direction of the frame through the first lifting lug, the mounting plate and the outlet.

[0016] As a preferred technical solution of the present invention, the mill grinding part lifting beam further includes: an auxiliary lifting component for cooperating with a vehicle crane to lift the frame to the height of the mill inlet.

[0017] As a preferred technical solution of the present invention, the auxiliary lifting components are a plurality of first lifting ears provided at the upper end of the frame, and the first lifting ears cooperate with the hooks of the vehicle crane.

[0018] As a preferred technical solution of the present invention, the frame includes two cross beams and vertical beams arranged at the ends of the two cross beams to fix the two cross beams, and a reinforcing rib structure is provided between the two cross beams.

[0019] As a preferred technical solution of the present invention, there are two lifting structures and they are symmetrically arranged front to back about the frame. Accordingly, there are two hoists to apply two symmetrical lifting forces to the grinding piece.

[0020] The beneficial effects of the utility model are as follows: the utility model arranges a hoist on the frame, fixes the frame at the entrance of the mill, and can realize the horizontal and vertical lifting of the grinding parts by the hoist. The grinding balls can be taken out and installed from the inside of the mill smoothly and vertically by the hoist. There is no need for the direct cooperation of the car crane and the maintenance personnel to complete the disassembly and installation of the grinding balls, which completely avoids the safety hazards caused by the cooperation between people and vehicles in the previous operation and improves the safety benefits. Moreover, it now only takes about 30 minutes to lift out 7 grinding balls, which is at least 2 hours faster than before, thereby improving the maintenance efficiency, better ensuring production, reducing maintenance costs, and reducing labor costs and vehicle costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the top view of the structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the left side structure of the framework of the present invention;

[0025] Figure 4 This is a schematic diagram of the main structure of the first rod and the second rod of the utility model;

[0026] Figure 5 This is a schematic diagram of the top structure of the first rod and the fixing block of the utility model.

[0027] The markings in the figure are: 1. frame; 2. fixing block; 3. first rod; 4. fourth mounting hole; 5. fifth mounting hole; 6. second rod; 7. third rod; 8. second mounting hole; 9. third mounting hole; 10. third connecting member; 11. first lifting ear; 12. fixing hook; 13. second lifting ear; 14. mounting plate; 15. first mounting hole; 16. second connecting member; 17. grinder; 18. track; 19. hoist; 20. sixth mounting hole; 21. fourth connecting member; 22. inlet; 23. outlet. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0029] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0030] like Figure 1 and Figure 2 As shown, the mill grinding parts hanging beam includes:

[0031] Frame 1;

[0032] The mill grinding piece lifting beam further includes: at least one lifting structure provided on the frame 1 for lifting the grinding piece. In this embodiment, there are two lifting structures and they are symmetrically arranged front and back about the frame 1. Accordingly, there are two lifting devices to apply two symmetrical lifting forces to the grinding piece. The lifting structures include:

[0033] Lifting device for fixing grinding parts;

[0034] a first drive assembly for driving the spreader to move relative to the inlet 22 of the mill 17 so as to extend the spreader into or out of the inlet 22;

[0035] A second drive assembly is used to drive the sling to raise or lower its height relative to the ground, so that the sling can lift or lower the grinding piece;

[0036] The above technical solution can facilitate the lifting of grinding balls. When in use, the frame 1 is lifted to the height of the entrance 22 using a truck crane, ensuring that one end of the frame 1 extends into the entrance 22, the frame 1 is fixed, and the sling is extended from the entrance 22 of the mill 17 into the interior of the mill 17 through the first drive assembly, and then the sling is lowered using the second drive assembly. The staff in the mill 17 uses the sling to fix the grinding balls, and then the sling is lifted to the entrance 22 through the second drive assembly, and then the grinding balls are transported out of the mill 17 from the entrance 22 through the first drive assembly. Finally, the sling is lowered using the second drive assembly so that the grinding balls contact the ground, and the sling is removed to complete the disassembly.

[0037] like Figure 1 and Figure 2As shown, in this embodiment, the mill grinding part hanging beam further includes a fixing structure for fixing the frame 1 so that one end of the frame 1 passes through the inlet 22 and extends into the interior of the mill 17; specifically, the fixing structure includes: a plurality of first lifting ears 11 provided on the left side of the upper end of the frame 1, the first lifting ears 11 being connected to a first connecting member, which is a fixing hook 12 fixed to the concrete beam; a mounting plate 14 provided at the middle of the upper end of the frame 1, and since the cross-section of the mill 17 is a circular structure, the mounting plate 14 is configured as an arc-shaped plate structure to better fit the surface of the mill 17, the mounting plate 14 is provided with a first mounting hole 15, and a second connecting member 16 is provided in the first mounting hole 15, and one end of the second connecting member 16 is connected to the outer wall of the mill 17; the mill 17 is provided with an outlet 23 on the other side thereof relative to the inlet 22, and the right end of the frame 1 is mounted on the outlet 23, thereby forming three supports for the frame 1 in the longitudinal direction thereof through the first lifting ears 11, the mounting plate 14 and the outlet 23;

[0038] The above technical solution can stably fix the frame 1 to prevent the frame 1 from shaking violently during lifting and affecting the stability. When in use, open the sealing plate that blocks the inlet 22 and outlet 23 on the outside of the mill 17, so that the inlet 22 and outlet 23 are open, and use the crane to lift the frame 1 to the height of the inlet 22 of the mill 17, ensuring that the mounting plate 14 fits the outer wall of the mill 17, and the right end of the frame 1 extends into the inlet 22, and the right end of the frame 1 is mounted on the outlet 23, and the first connecting piece of the first lifting ear 11 is connected to the fixing hook 12 on the concrete beam, and then use the second connecting piece 16 to pass through the first mounting hole 15 and fix it to the mill 17, thereby completing the fixed installation of the frame 1.

[0039] like Figure 1 and Figure 3 As shown, in this embodiment, the lifting device is a hook of a hoist 19, and a track 18 for sliding the hoist 19 is provided at the lower end of the frame 1. The hoist 19 drives the hook to move along the track 18 to realize the movement of the first drive assembly, and the hoist 19 drives the grinding member to rise and fall through the hook to realize the movement of the second drive assembly. Specifically, a sixth mounting hole 20 is formed at one end of the track 18, and a seventh mounting hole is formed at the bottom of the frame 1. A fourth connecting member 21 is provided in the sixth mounting hole 20 and the seventh mounting hole.

[0040] The above technical solution allows the grinding balls to be taken out and installed smoothly and vertically from the inside of the mill 17 by means of a hoist 19. The hoist 19 can be a manual hoist or an electric hoist, preferably an electric hoist, such as a 5-ton 6-meter electric chain remote control hoist. The track 18 is a 400mm I-steel. The grinding balls are provided with through holes. When in use, the chain passes through the grinding ball through hole, and then the hooks of the two hoists 19 are hooked to the two ends of the chain. The grinding balls are driven up to the entrance 22 by the chain and hook of the hoist 19, and then the hoist 19 is moved along the track 18 from the entrance. The opening 22 slides out of the mill 17, thereby taking the grinding balls out of the mill 17. Finally, the hoist 19 lowers the chain and the hook, thereby placing the grinding balls on the ground. The hook of the hoist 19 is removed from the chain on the grinding balls to complete the disassembly. It is no longer necessary for the automobile crane and maintenance personnel to directly cooperate to complete the disassembly and assembly of the grinding balls. This completely avoids the safety hazards caused by the cooperation between people and vehicles during previous operations and improves safety benefits. Now it only takes about 30 minutes to lift out 7 grinding balls, which is at least 2 hours faster than before, improving maintenance efficiency and better ensuring production.

[0041] like Figure 1 and Figure 2 As shown, in this embodiment, the mill grinding piece lifting beam further comprises: an auxiliary lifting assembly for cooperating with the vehicle crane to lift the frame 1 to the height of the mill 17 entrance 22;

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the auxiliary lifting components are a plurality of second lifting ears 13 provided at the upper end of the frame 1, and the number of the second lifting ears 13 is preferably four, and the second lifting ears 13 cooperate with the hook of the vehicle crane;

[0043] The frame 1 can be lifted by adopting the above technical solution. The steel wire rope passes through the second lifting lug 13 and is then fixed to the steel wire rope by the hook of the crane, thereby lifting the frame 1 by the crane.

[0044] like Figure 2 As shown, in this embodiment, the frame 1 includes two cross beams and vertical beams arranged at the ends of the two cross beams to fix the two cross beams, and a reinforcing rib structure is provided between the two cross beams; specifically, as shown in FIG. Figure 4 and Figure 5 As shown, the reinforcing rib structure includes: a first rod 3, a second rod 6 and a third rod 7. A second mounting hole 8 is opened on the surface of the first rod 3, a third mounting hole 9 is opened on the surface of the third rod 7 to match the second mounting hole 8, and a third connecting member 10 is provided in the second mounting hole 8 and the third mounting hole 9. The first rod 3, the second rod 6 and the third rod 7 are combined to form an X-shaped reinforcing rib through the third connecting member 10. A fourth mounting hole 4 is opened on the surface of the fixing block 2, and fifth mounting holes 5 are opened at the four ends of the X-shaped reinforcing rib. A fifth connecting member is provided in the fourth mounting hole 4 and the fifth mounting hole 5.

[0045] The adoption of the above technical solution can further enhance the strength of the frame 1 and prevent the frame 1 from being deformed due to load. It should be noted that the aforementioned first connecting member, second connecting member 16, third connecting member 10, fourth connecting member 21 and fifth connecting member are all bolts and nuts, or may be other common connecting members, without limitation. In addition, the grinding parts are not limited to grinding balls, but may be other components in the mill 17, such as a grinding disc press, an upper grinding disc, a lower grinding disc, a drive tray, and the like.

[0046] Working principle: When in use, open the sealing plate on the outside of the mill 17 that blocks the inlet 22 and outlet 23, so that the inlet 22 and outlet 23 are open, lift the frame 1 to the height of the inlet 22 of the mill 17 by the crane, ensure that the mounting plate 14 fits the outer wall of the mill 17, and the right end of the frame 1 extends into the inlet 22, and the right end of the frame 1 is mounted on the outlet 23, connect the first connecting piece of the first lifting ear 11 to the fixing hook 12 on the concrete beam, and then use the second connecting piece 16 to pass through the first mounting hole 15 is fixed to the mill 17, thereby completing the fixed installation of the frame 1, using a chain to pass through the through hole of the grinding ball, and then hooking the two hooks of the hoist 19 to the two ends of the chain, the grinding balls are driven up to the entrance 22 by the chain and hook of the hoist 19, and then the hoist 19 slides out of the mill 17 from the entrance 22 along the track 18, thereby taking the grinding balls out of the mill 17, and finally the hoist 19 lowers the chain and hook to place the grinding balls on the ground, and the hook of the hoist 19 is removed from the chain on the grinding balls to complete the disassembly.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0048] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. Mill grinding parts hanging beam, including: Framework (1); It is characterized in that the mill grinding piece lifting beam further comprises: at least one lifting structure provided on the frame (1) for lifting the grinding piece, the lifting structure comprising: a hanger for fixing the grinding member; a first drive assembly for driving the spreader to move relative to an inlet (22) of the mill (17) so as to allow the spreader to extend into or out of the inlet (22); The second driving assembly is used to drive the sling to raise or lower its height relative to the ground, so that the sling can lift or lower the grinding piece.

2. The mill grinding part hanging beam according to claim 1, characterized in that: The mill grinding piece suspension beam further comprises a fixing structure for fixing the frame (1) so that one end of the frame (1) passes through the inlet (22) and extends to the interior of the mill (17).

3. The mill grinding part hanging beam according to claim 2, characterized in that: The sling is a hook of a hoist (19); a track (18) for the hoist (19) to slide is provided at the lower end of the frame (1); the hoist (19) drives the hook to move along the track (18) to realize the movement of the first drive component; and the hoist (19) drives the grinding piece to rise and fall through the hook to realize the movement of the second drive component.

4. The mill grinding part hanging beam according to claim 3, characterized in that: The fixing structure comprises: a plurality of first lifting ears (11) provided on the left side of the upper end of the frame (1); the first lifting ears (11) are connected to a first connecting member.

5. The mill grinding part hanging beam according to claim 4, characterized in that: The fixing structure further comprises: a mounting plate (14) provided at the middle portion of the upper end of the frame (1); the mounting plate (14) is provided with a first mounting hole (15); a second connecting member (16) is provided in the first mounting hole (15); one end of the second connecting member (16) is connected to the outer wall of the grinder (17).

6. The mill grinding part hanging beam according to claim 5, characterized in that: The grinding mill (17) is provided with an outlet (23) on the other side thereof relative to the inlet (22), and the right end of the frame (1) is mounted on the outlet (23), thereby forming three supports for the frame (1) in the longitudinal direction thereof through the first lifting lug (11), the mounting plate (14) and the outlet (23).

7. The mill grinding part hanging beam according to any one of claims 4 to 6, characterized in that: The mill grinding piece lifting beam further comprises: an auxiliary lifting assembly for cooperating with a vehicle crane to lift the frame (1) to the height of the mill (17) entrance (22).

8. The mill grinding part hanging beam according to claim 7, characterized in that: The auxiliary lifting components are a plurality of second lifting ears (13) arranged on the upper end of the frame (1), and the second lifting ears (13) are matched with the hooks of the vehicle crane.

9. The mill grinding part hanging beam according to claim 8, characterized in that: The frame (1) comprises two cross beams and vertical beams arranged at the ends of the two cross beams to fix the two cross beams, and a reinforcing rib structure is arranged between the two cross beams.

10. The mill grinding part hanging beam according to claim 9, characterized in that: There are two lifting structures and they are arranged symmetrically front and back about the frame (1). Accordingly, there are two lifting devices to apply two symmetrical lifting forces to the grinding piece.

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