Coal mill grinding roller sleeve hoisting device

Abstract

The utility model relates to the technical field of equipment hoisting, in particular to a coal mill grinding roller shell hoisting device which comprises a bottom plate, supporting assemblies are arranged at the two ends of the bottom plate respectively, a horizontal telescopic assembly is arranged between the supporting assemblies at the two ends, and the supporting assembly at any end comprises a supporting fixed plate and a supporting movable plate. And a vertical telescopic assembly is arranged between the supporting fixed plate and the supporting movable plate. A lug plate assembly is fixedly installed at the top of the bottom plate, a hinge hole is formed in the lug plate assembly, the lug plate assembly is hinged to an installation plate through the hinge hole, and the installation plate is connected with the hanging beam. The lug plate assembly further comprises a lug plate and an auxiliary lug plate, the bottom of the lug plate is fixedly connected with the bottom plate, the hinge hole is located in the top of the lug plate, and the auxiliary lug plate is arranged on the side face of the lug plate and connected with the hanging beam. The coal mill grinding roller sleeve hoisting device achieves the technical purposes that coal mill grinding roller sleeves with different diameters and depths are hoisted, and the coal mill grinding roller sleeve hoisting device can be suitable for different working environments.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment hoisting, and more specifically, to a hoisting device for a grinding roller sleeve of a coal mill. Background Art

[0002] A coal mill is one of the important equipment in a coal-fired power plant, mainly used for crushing coal into fine particles, increasing the contact area between coal and oxygen, and improving the combustion efficiency of coal. The grinding roller sleeve of a coal mill refers to the sleeve of the roller part of the coal mill, which is located at the core of the coal mill and is one of the important components of the coal mill. After long-term grinding, the grinding roller sleeve in the current coal mill will be damaged, affecting the coal grinding efficiency. Therefore, it is necessary to often remove the damaged grinding roller sleeve by a hoisting machine. During hoisting, the grinding roller sleeve is usually directly sleeved by a hoisting rope, which not only causes the grinding roller sleeve to swing during hoisting, but also wears the grinding surface outside the grinding roller sleeve.

[0003] The Chinese utility model patent with the patent name of "a hoisting device for a grinding roller sleeve of a coal mill" and the publication number of CN207566733U has been publicly disclosed. This patent includes a hoisting ear plate and a hoisting sleeve rod. The hoisting sleeve rod is fixedly arranged at the lower part of the hoisting ear plate. There are ear plate holes on the hoisting ear plate. The hoisting sleeve rod is formed by combining a hollow sleeve, a telescopic screw rod, a screw rod and a fixed sleeve box. The telescopic screw rods are symmetrically distributed on both sides of the hollow sleeve. One end of the telescopic screw rod far from the hollow sleeve is connected to the screw rod, and a fixed sleeve box is connected to the end of the screw rod. This device can avoid situations such as tilting and falling during the hoisting of the grinding roller sleeve of the coal mill, and can also adapt to the hoisting of grinding roller sleeves of different sizes.

[0004] However, the single-layer fixed sleeve box easily causes the grinding roller sleeve of the coal mill to tilt, and during the hoisting process, it cannot be tilted, so it is not applicable to installation work or a relatively narrow hoisting environment. Summary of the Utility Model

[0005] The purpose of this application is to provide a hoisting device for a grinding roller sleeve of a coal mill, which solves the technical problems of hoisting grinding roller sleeves of different diameters and depths of a coal mill and being applicable to different working environments.

[0006] To solve the above technical problems, the solution adopted in this application is as follows:

[0007] Preferably, a hoisting device for a grinding roller sleeve of a coal mill includes a bottom plate. Support components are respectively arranged at both ends of the bottom plate. A horizontal telescopic component is arranged between the support components at both ends. Each of the support components at any one end includes a support fixed plate and a support moving plate, which are arranged opposite to each other up and down. A vertical telescopic component is arranged between the support fixed plate and the support moving plate.

[0008] Preferably, an ear plate assembly is fixedly installed on the top of the bottom plate. A hinge hole is provided in the ear plate assembly and is hinged to the mounting plate member through the hinge hole. The mounting plate member is connected to the hanging beam.

[0009] Preferably, the ear plate assembly further includes an ear plate and a secondary ear plate. The bottom of the ear plate is fixedly connected to the bottom plate. The hinge hole is located at its top. A secondary ear plate is arranged on the side of the ear plate, and the secondary ear plate is connected to the hanging beam.

[0010] Preferably, the horizontal telescopic assembly includes a first screw rod. The middle part of the first screw rod is threaded, and both ends are sliding columns, and it horizontally passes through the bottom plate. Threads are provided in the through hole of the bottom plate and match the threads in the middle of the first screw rod. One sliding column at one end of the first screw rod is fixedly connected to the driving shaft of the first motor, and the first motor is fixed on the supporting fixed plate at one end. The other sliding column at the other end of the first screw rod is slidably sleeved in the circular hole arranged in the supporting fixed plate at the other end.

[0011] Preferably, corresponding horizontal telescopic assemblies are arranged on the supporting fixed plates at both ends of the bottom plate and are sleeved and connected to the supporting fixed plates at the opposite ends. The horizontal telescopic assemblies at both ends are arranged staggeredly.

[0012] Preferably, the vertical telescopic assembly includes a second screw rod. A vertical threaded hole is arranged in the middle of the supporting moving plate, and the threaded hole is connected to the top of the second screw rod in a matching manner. The bottom of the second screw rod passes through the supporting fixed plate and is fixedly connected to the driving shaft of the second motor, and the second motor is fixed on the supporting fixed plate.

[0013] Preferably, the vertical telescopic assembly further includes support columns. The two support columns are symmetrically arranged at both ends of the second screw rod. The support columns slidably pass through the supporting fixed plate. The tops of the two support columns are fixedly connected together through a connecting threaded plate. A threaded hole is arranged in the middle of the connecting threaded plate and is threadedly sleeved with the second screw rod.

[0014] Preferably, the top of the support column abuts against the plate surface of the supporting moving plate, and a groove matching the shape of the connecting threaded plate is arranged on the plate surface of the supporting moving plate.

[0015] Preferably, the outer shapes of the supporting fixed plate and the supporting moving plate are the same. A circular protrusion is fixedly arranged at one end close to the inner wall of the grinding roll sleeve, and an anti-slip pad is fixedly arranged on the circular protrusion and abuts against the inner wall of the grinding roll sleeve.

[0016] Preferably, the mounting plate member includes a mounting plate and a fixing pin. The mounting plate is hinged to the hinge hole at the top of the ear plate. Pin holes are both penetrated above the hinged position of the mounting plate and the ear plate. A fixing pin is arranged in the pin holes, and the fixing pin passes through the mounting plate and the ear plate.

[0017] The technical solution of the present application has at least the following advantages and beneficial effects:

[0018] In the present utility model, through the ear plates and the secondary ear plates, the device can be tilted at an angle through the two ear plates, so that the roller sleeve of the grinding roller can be tilted at an angle, so as to be applicable to the installation of the roller sleeve of the grinding roller or a relatively narrow hoisting environment;

[0019] In the present utility model, the horizontal telescopic assembly drives the support assemblies that are in contact with and support the inside of the roller sleeves on both sides to move horizontally, so as to be applicable to the fixed hoisting of roller sleeves with different diameters;

[0020] In the present utility model, the vertical telescopic assembly drives the support moving plate and the support fixing plate in the support assembly to change the vertical distance, so as to be applicable to the fixed hoisting of roller sleeves with different heights;

[0021] In the present utility model, through the bearing force at the double-thread connection in the vertical telescopic assembly, when the bearing force of one of the threads fails, there is another thread for safe bearing force, providing a safety guarantee when the support assembly bears the gravity of the roller sleeve of the grinding roller and ensuring the safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present utility model;

[0023] Figure 2 is a front view structural diagram of a specific embodiment of the device.

[0024] Figure 3 is a sectional view structural diagram of the mounting plate in a specific embodiment of the device.

[0025] Figure 4 is a sectional view structural diagram of the horizontal telescopic assembly in a specific embodiment of the device.

[0026] Figure 5 is a sectional view structural diagram of the vertical telescopic assembly in a specific embodiment of the device.

[0027] Figure 6 is another sectional view structural diagram of the vertical telescopic assembly in a specific embodiment of the device.

[0028] In the figure: 1 - bottom plate, 2 - ear plate assembly, 201 - ear plate, 202 - hinge hole, 203 - auxiliary ear plate, 3 - mounting plate component, 301 - mounting plate, 302 - fixing pin, 4 - support assembly, 401 - support moving plate, 402 - support fixing plate, 403 - anti-slip pad, 5 - horizontal telescopic assembly, 501 - first screw rod, 502 - first motor, 6 - vertical telescopic assembly, 601 - threaded hole, 602 - second screw rod, 603 - support column, 604 - connecting threaded plate, 605 - second motor, 7 - grinding roller sleeve. Detailed implementation manner

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. If terms such as "center", "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application. It should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0031] Embodiment

[0032] Please refer to Figures 1-6 , the present invention provides a hoisting device for a grinding roller sleeve of a coal mill, including a bottom plate 1, an ear plate assembly 2, a mounting plate component 3, a support assembly 4, a horizontal telescopic assembly 5, a vertical telescopic assembly 6, and a grinding roller sleeve 7.

[0033] Furthermore, the bottom plate 1 is located inside the roller sleeve 7 of the grinding roller to be lifted. Support assemblies 4 are respectively arranged at both ends of the bottom plate 1. The support assemblies 4 are in contact with the arc-shaped inner wall of the roller sleeve 7 of the grinding roller and are used to bear the gravity during lifting.

[0034] Furthermore, a horizontal telescopic assembly 5 is arranged between the support assemblies 4 at both ends and is used to adjust the distance between the support assemblies 4 at both ends to be applicable to roller sleeves 7 of different diameters.

[0035] Furthermore, each support assembly 4 at any end includes a support fixed plate 402 and a support movable plate 401, which are arranged vertically opposite to each other. A vertical telescopic assembly 6 is arranged between the support fixed plate 402 and the support movable plate 401 and is used to adjust the distance between the support fixed plate 402 and the support movable plate 401, so that the support fixed plate 402 and the support movable plate 401 are respectively in contact with the arc-shaped inner walls of the roller sleeves 7 at different heights.

[0036] Furthermore, an ear plate assembly 2 is fixedly installed at the top of the bottom plate 1. A hinge hole 202 is provided in the ear plate assembly 2. The ear plate assembly 2 is hinged to the mounting plate member 3 through the hinge hole 202. The mounting plate member 3 is fixedly connected to the lifting beam. When the lifting beam is lifting, the bottom plate 1 and the support assemblies 4 are displaced through the ear plate 201, so as to lift the fixed roller sleeve 7.

[0037] Preferably, the ear plate assembly 2 further includes an ear plate 201 and a secondary ear plate 203. The mounting plate member 3 includes a mounting plate 301 and a fixing pin 302.

[0038] The bottom of the ear plate 201 is fixedly connected to the bottom plate 1. The hinge hole 202 is located at its top and is hinged to the mounting plate 301 at its top. A secondary ear plate 203 is arranged on the side of the ear plate 201. The mounting plate 301 is connected to the lifting beam, while the secondary ear plate 203 is connected to another lifting beam. When the lifting beam lifts the roller sleeve 7 through the mounting plate 301 and angle installation or avoidance during lifting is required, the whole device is angularly offset by pulling the secondary ear plate 203 by another lifting beam, and the roller sleeve 7 is correspondingly offset to achieve installation or avoidance.

[0039] Among them, a pin hole penetrates through above the hinged position of the mounting plate 301 and the ear plate 201. There is a fixing pin 302 in the pin hole. The fixing pin 302 passes through the mounting plate 301 and the ear plate 201, so that the two cannot swing relative to each other. When the angular offset of the roller sleeve 7 is not required, the fixing pin 302 is manually inserted to limit the rotation of the ear plate 201 and keep the roller sleeve 7 horizontally lifted; when the angular offset of the roller sleeve 7 is required, the fixing pin 302 is manually removed again, so that the ear plate 201 rotates through the hinge point and the roller sleeve 7 is offset.

[0040] In some feasible embodiments, the support assembly 4 further includes an anti-slip pad 403.

[0041] Specifically, the outer shapes of the support fixed plate 402 and the support moving plate 401 are the same. One end close to the inner wall of the grinding roll sleeve 7 is fixedly provided with a circular protrusion, and an anti-slip pad 403 is fixedly arranged on the circular protrusion. The anti-slip pad 403 abuts against the inner wall of the grinding roll sleeve 7. The circular protrusion is used to adapt to the arc-shaped inner walls of grinding roll sleeves 7 of different sizes, and the anti-slip pad 403 increases the frictional resistance to prevent the grinding roll sleeve 7 from slipping off the support assembly 4.

[0042] In some feasible embodiments, the horizontal telescopic assembly 5 includes a first screw rod 501 and a first motor 502.

[0043] Specifically, the middle part of the first screw rod 501 is threaded, and both ends are sliding columns, and it horizontally passes through the bottom of the bottom plate 1. Threads are provided in the through-hole of the bottom plate 1, which match the threads in the middle of the first screw rod 501. One end of the sliding column of the first screw rod 501 is fixedly connected to the drive shaft of the first motor 502, and the first motor 502 is fixed on the support fixed plate 402 at one end.

[0044] When the first motor 502 drives the first screw rod 501 to rotate, the first screw rod 501 undergoes horizontal displacement due to the threads in the through-hole of the bottom plate 1, thereby driving the support fixed plate 402 at one end to undergo horizontal displacement and abut against the inner wall of the grinding roll sleeve 7 with different diameters.

[0045] In addition, the sliding column at the other end of the first screw rod 501 is also slidably sleeved in the circular hole provided in the support fixed plate 402 at the other end. When the first screw rod 501 horizontally drives the support fixed plate 402 at one end to displace, the sliding column at its other end still slides horizontally in the support fixed plate 402 at the other end. The bottom plate 1 and the support fixed plates 402 at both ends are connected together by the first screw rod 501 to enhance the structural strength of the entire hoisting device and prevent the device from being damaged and broken due to the excessive weight of the grinding roll sleeve 7.

[0046] It should be noted that corresponding horizontal telescopic assemblies 5 are provided on the support fixed plates 402 at both ends of the bottom plate 1, and are sleeved and connected to the support fixed plate 402 at the opposite end through the sliding columns of the first screw rod 501, which increases the structural strength of the device, and the horizontal telescopic assemblies 5 at both ends are staggered and will not interfere with each other.

[0047] In some feasible embodiments, the vertical telescopic assembly 6 includes a threaded hole 601, a second screw rod 602, a support column 603, a connecting threaded plate 604, and a second motor 605.

[0048] Specifically, the positions of the supporting moving plate 401 and the supporting fixed plate 402 correspond up and down. A vertical threaded hole 601 is provided in the middle of the supporting moving plate 401. The threaded hole 601 is connected to the top of the second screw rod 602 in a matching manner. The bottom of the second screw rod 602 passes through the supporting fixed plate 402 and is fixedly connected to the driving shaft of the second motor 605. The second motor 605 is fixed on the supporting fixed plate 402.

[0049] When the second motor 605 drives the second screw rod 602 to rotate, the supporting moving plate 401 is driven to displace vertically through the threaded hole 601. Since the supporting fixed plate 402 is connected to the horizontal telescopic assembly 5 and will not displace vertically, the distance between the supporting moving plate 401 and the supporting fixed plate 402 is increased to abut against the grinding roller sleeves 7 of different depths.

[0050] Specifically, two support columns 603 are symmetrically arranged at both ends of the second screw rod 602 and slidably pass through the supporting fixed plate 402. The tops of the two support columns 603 are fixedly connected together through a connecting threaded plate 604. A threaded hole 601 is provided in the middle of the connecting threaded plate 604, and it is threadedly sleeved with the second screw rod 602. The tops of the support columns 603 abut against the plate surface of the supporting moving plate 401.

[0051] When the second screw rod 602 rotates, the two support columns 603 will also displace vertically together with the supporting moving plate 401 through the connecting threaded plate 604. When the supporting moving plate 401 abuts against and supports the grinding roller sleeve 7, the gravity of the grinding roller sleeve 7 received on the supporting moving plate 401 is borne through the threaded connections at the two places of the second screw rod 602 and the threaded hole 601, and the second screw rod 602 and the threaded connecting plate.

[0052] When one of the threaded connections fails, the other threaded connection can still be used for safe load bearing. The double load bearing provides a safety protection to give the workers responsible for hoisting time to escape when the support assembly 4 suddenly fails to support, reducing safety accidents.

[0053] It should be noted that the threads at the threaded connections described above have a large difference between the outer diameter and the inner diameter of the threads, making them more capable of withstanding load forces and impact forces (i.e., coarse-threaded screws).

[0054] In addition, a groove matching the shape of the connecting threaded plate 604 is provided on the plate surface of the supporting moving plate 401. The connecting threaded plate 604 is located in this groove. The two support columns 603 on the connecting threaded plate 604 are used to limit the synchronous rotation of the supporting moving plate 401 with the second screw rod 602, so that it only makes vertical displacement.

[0055] So far, the embodiments of the present utility model have been described in detail. To avoid obscuring the concept of the present utility model, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions of the present utility model based on the above description. The scope of the present utility model is defined by the appended claims.

Claims

1. A hoisting device for a grinding roller sleeve of a coal mill, comprising a bottom plate (1), characterized in that, Support components (4) are respectively arranged at both ends of the bottom plate (1). A horizontal telescopic component (5) is arranged between the support components (4) at both ends. Each of the support components (4) at either end includes a support fixed plate (402) and a support movable plate (401), which are arranged opposite to each other vertically. A vertical telescopic component (6) is arranged between the support fixed plate (402) and the support movable plate (401). An ear plate component (2) is fixedly installed on the top of the bottom plate (1). A hinge hole (202) is provided in the ear plate component (2) and is hinged to a mounting plate member (3) through the hinge hole (202). The mounting plate member (3) is connected to a suspension beam. The ear plate component (2) further includes an ear plate (201) and a secondary ear plate (203). The bottom of the ear plate (201) is fixedly connected to the bottom plate (1). The hinge hole (202) is located at its top. A secondary ear plate (203) is arranged on the side of the ear plate (201), and the secondary ear plate (203) is connected to the suspension beam.

2. The hoisting device for the grinding roll sleeve of a coal mill according to claim 1, characterized in that The horizontal telescopic component (5) includes a first screw rod (501). The middle part of the first screw rod (501) is threaded, and both ends are sliding columns. The first screw rod (501) horizontally passes through the bottom plate (1). Threads are provided in the through-hole of the bottom plate (1), which match the threads in the middle part of the first screw rod (501). One sliding column of the first screw rod (501) is fixedly connected to the drive shaft of a first motor (502), and the first motor (502) is fixed on the support fixed plate (402) at one end. The other sliding column of the first screw rod (501) is slidably sleeved in a circular hole arranged in the support fixed plate (402) at the other end. Corresponding horizontal telescopic components (5) are arranged on the support fixed plates (402) at both ends of the bottom plate (1) and are sleeved and connected to the support fixed plates (402) at the opposite ends. The horizontal telescopic components (5) at both ends are arranged in a staggered manner.

3. A lifting device for a grinding roller sleeve of a coal mill according to claim 1, characterized in that The vertical telescopic component (6) includes a second screw rod (602). A vertical threaded hole (601) is arranged in the middle of the support movable plate (401). The threaded hole (601) is connected to the top of the second screw rod (602) in a matching manner. The bottom of the second screw rod (602) passes through the support fixed plate (402) and is fixedly connected to the drive shaft of a second motor (605). The second motor (605) is fixed on the support fixed plate (402).

4. The hoisting device for the grinding roller sleeve of a coal mill according to claim 3, characterized in that The vertical telescopic component (6) further includes support columns (603). The two support columns (603) are symmetrically arranged at both ends of the second screw rod (602). The support columns (603) slidably pass through the support fixed plate (402). The tops of the two support columns (603) are fixedly connected together through a connecting threaded plate (604). A threaded hole (601) is arranged in the middle of the connecting threaded plate (604) and is threadedly sleeved on the second screw rod (602).

5. The hoisting device for the grinding roller sleeve of a coal mill according to claim 4, characterized in that, The top of the support column (603) abuts against the plate surface of the support movable plate (401). A groove matching the shape of the connecting threaded plate (604) is arranged on the plate surface of the support movable plate (401).

6. The hoisting device for the grinding roller sleeve of a coal mill according to claim 1, wherein The external shapes of the supporting fixed plate (402) and the supporting moving plate (401) are the same. A circular protrusion is fixedly arranged at one end close to the inner wall of the grinding roll sleeve (7), and an anti-slip pad (403) is fixedly arranged on the circular protrusion. The anti-slip pad (403) abuts against the inner wall of the grinding roll sleeve (7).

7. A hoisting device for a grinding roller sleeve of a coal mill according to claim 1, characterized in that, The mounting plate member (3) includes a mounting plate (301) and a fixing pin (302). The mounting plate (301) is hinged to the hinge hole (202) at the top of the ear plate (201). A pin hole is penetrated above the hinged position of the mounting plate (301) and the ear plate (201), and a fixing pin (302) is arranged in the pin hole. The fixing pin (302) passes through the mounting plate (301) and the ear plate (201).

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