Tool for mounting vertical millstone body and dismounting roller sleeve of grinding roller

Abstract

The utility model discloses a tool for installing a vertical millstone body and detaching a grinding roller sleeve, which comprises a jack bracket and a wing plate, the jack bracket consists of supporting arms and a supporting ring, the supporting arms are uniformly arranged along the circumferential direction of the supporting ring, one end of each supporting arm is provided with a thread bushing, and the upper end and the lower end of the wing plate are respectively provided with a bending part. The lower bending portion of the wing plate is arranged to be a clamping hook portion, the upper bending portion of the wing plate is matched with the supporting arm, a connecting block is arranged on the upper bending portion and fixedly connected with the threaded sleeve through a bolt, a reinforcing rib is arranged on the side face of the bending portion of the wing plate, a limiting clamping block is arranged on the outer side of the connecting block, and the supporting arm is clamped on the limiting clamping block. An inner ring is arranged on the inner side of the supporting ring and connected with a fixing disc through screws, and the hydraulic jack is arranged on the fixing disc. Only one set of tool is used to complete the installation of the millstone and the speed reducer and the disassembly of the roller sleeve of the grinding roller, and the device has the advantages of simple operation and small number of operators.

Description

Technical Field

[0001] The utility model relates to the technical field of installing a vertical mill body and disassembling a grinding roller sleeve, in particular to a tool for installing a vertical mill body and disassembling a grinding roller sleeve. Background Art

[0002] A variety of auxiliary tools are typically used during the installation and maintenance of vertical mills. The large number of tools significantly increases production or procurement costs. Generally, three to four hydraulic jacks and one set of grinding disc supports are used during the installation or removal of the main reducer and grinding disc. Lifting the main reducer with the jacks requires the collaborative work of three to four installers, which is time-consuming and labor-intensive. During maintenance, if problems such as damage to the grinding roller sleeve are encountered, specialized tools and jacks are typically used to secure the roller sleeve and separate it from the hub. In summary, the numerous tools used during vertical mill installation and maintenance make the operation difficult. Chinese patent application No. 202120205048.1 discloses a roller sleeve disassembly device for a roller-type vertical mill, comprising a lifting part and a fixing part. The lifting part is provided with a cross bracket, and the four end points of the cross bracket are provided with vertical mounting grooves. The mounting groove is transparent up and down to form two fixing ears, and the fixing ears are provided with transversely transparent mounting holes relative to each other. This structure is a conventional tool and can only be used for disassembling the grinding roller sleeve. There are the above-mentioned technical problems. Chinese patent application No. 202110984628.X discloses a vertical mill roller sleeve disassembly and assembly device and a vertical mill roller sleeve disassembly and assembly method using the device. A jack is placed on the upper surface of the grinding roller, and a connecting plate is placed on the upper surface of the jack. A plurality of connecting rods are fixedly connected in the circumferential direction of the connecting plate. The lower end of each connecting rod is connected to a hanging rod, and each hanging rod is provided with a hanging groove on a side close to the grinding sleeve. The grinding sleeve is inserted into each hanging groove and thus hung with the hanging rod. It is also only used for disassembling the grinding roller sleeve. Therefore, a tool for installing a vertical mill disc body and disassembling a grinding roller sleeve is proposed to solve the above-mentioned problems. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a tool for installing the vertical grinding disc body and disassembling the grinding roller sleeve. Only one set of tools is used to complete the two tasks of installing the grinding disc and the reducer and disassembling the grinding roller sleeve, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tool for installing a vertical mill body and removing a grinding roller sleeve, comprising a jack bracket and a wing plate, the jack bracket consisting of a support arm and a support ring, the support arm being evenly arranged along the circumferential direction of the support ring, a threaded sleeve being provided at one end of the support arm, a bent portion being provided at the upper and lower ends of the wing plate, the lower bent portion of the wing plate being provided as a hook portion, the upper bent portion of the wing plate cooperating with the support arm, a connecting block being provided on the upper bent portion, the connecting block and the threaded sleeve being fixedly connected by bolts, and reinforcing ribs being provided on the side of the bent portion of the wing plate.

[0005] Furthermore, a limit block is provided on the outer side of the connecting block, and the support arm is clamped on the limit block.

[0006] Furthermore, an inner ring is provided on the inner side of the support ring, the inner ring is connected to a fixed plate via screws, and the hydraulic jack is provided on the fixed plate.

[0007] Furthermore, the support ring is provided with lifting ears in the circumferential direction.

[0008] Furthermore, the support arms and wing plates are both made of flat steel, the lower surface of the support arms is parallel to the surface of the bent portion of the wing plates, at least three support arms are provided, and the support arms are evenly arranged along the circumferential direction of the support ring.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] Only one set of tools is needed to complete the installation of the grinding disc and the reducer, and the disassembly of the grinding roller sleeve. The tool has the advantages of simple operation, small number of operators, high safety and strong reliability. At the same time, the tool has low production cost and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the jack bracket of the utility model;

[0013] Figure 3 This is a schematic diagram of the connection structure between the jack bracket and the grinding disc device of the utility model.

[0014] In the figure: 1 grinding roller sleeve, 2 hook part, 3 reinforcement rib, 4 wing plate, 5 connection block, 6 bolt, 7 support arm, 8 lifting ear, 9 support ring, 10 limit block, 11 hydraulic jack, 12 fixed plate, 13 threaded sleeve, 14 inner ring, 15 grinding disc device. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0016] See also Figure 1-3 The utility model provides a technical solution: a tool for installing a vertical mill body and removing a grinding roller sleeve, comprising a jack bracket and a wing plate 4, the jack bracket consisting of a support arm 7 and a support ring 9, the support arm 7 is evenly arranged along the circumferential direction of the support ring 9, the support arm 7 and the support ring 9 are fixed by welding, one end of the support arm 7 is provided with a threaded sleeve 13, the upper and lower ends of the wing plate 4 are respectively provided with a bent portion, the lower bent portion of the wing plate 4 is provided with a hook portion 2, the hook portion 2 is used to clamp the grinding roller sleeve 1, the upper ... upper bent portion of the wing plate 4 is provided with a hook portion 2, the hook portion 2 is used to clamp the grinding roller sleeve 1, the upper bent portion of the wing plate 4 is provided with a hook portion 2, the upper bent portion of the wing plate 4 is provided with a hook portion 2, the hook portion 2 is used to clamp the grinding roller sleeve 1, the upper bent portion of the wing plate 4 is provided with a hook portion 2, the upper bent portion of the wing plate 4 is provided with a hook portion 2, the hook portion 2 is used to clamp the The bent portion cooperates with the support arm 7, and a connecting block 5 is provided on the upper bent portion. The connecting block 5 and the threaded sleeve 13 are fixedly connected by bolts 6. At this time, the tool can complete the disassembly of the grinding roller sleeve 1, and the wing plate 4 can be removed from the support arm 7 by loosening the bolts 6. At this time, the tool can complete the installation of the vertical mill disc body. At this time, the threaded sleeve 13 is connected to the grinding disc device 15 by screws, which plays the role of fixing the jack bracket. The side of the bent portion of the wing plate 4 is provided with a reinforcing rib 3, which is used to strengthen the structural strength of the wing plate 4.

[0017] A limit block 10 is provided on the outside of the connecting block 5, and the support arm 7 is clamped on the limit block 10. The limit block 10 and the connecting block 5 are used as two fulcrums to increase the contact section with the wing plate 4 and ensure the reliability of the connection.

[0018] An inner ring 14 is provided on the inner side of the support ring 9 . The inner ring 14 is connected to a fixing plate 12 via screws. The hydraulic jack 11 is provided on the fixing plate 12 .

[0019] The support ring 9 is provided with a lifting lug 8 in the circumferential direction, and the tool is hoisted through the lifting lug 8 to facilitate operation.

[0020] The support arm 7 and the wing plate 4 are both made of flat steel. The lower surface of the support arm 7 is parallel to the surface of the bent portion of the wing plate 4. At least three support arms 7 are provided, and the support arms 7 are evenly arranged along the circumferential direction of the support ring 9. The tool is simple to manufacture and is low in cost due to the use of flat steel. It can also meet the needs of installing and disassembling the grinding roller sleeve of the vertical mill body, achieving a dual-purpose purpose and improving the practicality of the device.

[0021] Installation process: During installation, the installation is carried out from bottom to top; in the early stage, the grinding disc support is used to support the grinding disc device. When the main reducer is in place, the jack bracket is fixedly connected to the bottom of the disc body of the grinding disc device 15 by screws. After fixing, the hydraulic jack 11 is fixedly connected to the fixed plate 12 by screws. After the above assembly is completed, the main reducer is now in place, and the main reducer and the base of the grinding disc device 15 are firmly fixed with screws, and then oil is filled into the hydraulic jack 11 to extend the hydraulic jack 11 until the hydraulic jack 11 contacts the output shaft end of the main reducer, and then the hydraulic jack 11 is extended again until the grinding disc support and the grinding disc device 15 are no longer in contact, that is, the grinding disc support is removed and taken out, and then the hydraulic jack 11 is slowly retracted until the grinding disc device 15 is located on the output shaft end of the main reducer, that is, the jack bracket and the hydraulic jack are removed to complete the installation of the grinding disc device 15 and the main reducer.

[0022] Disassembly process: first install the wing plate 4 on the jack bracket, then clamp the wing plate 4 to the roller sleeve of the grinding roller, and then fix the hydraulic jack 11 on the jack bracket with screws, and then extend the hydraulic jack 11 to complete the disassembly of the roller sleeve and the grinding roller.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Without departing from the spirit and scope of the present invention, the present invention may also have various changes and improvements, which fall within the scope of the present invention to be protected.

Claims

1. A tool for installing a vertical mill body and removing a grinding roller sleeve, comprising a jack stand and a wing plate (4), characterized in that: The jack bracket is composed of a support arm (7) and a support ring (9), the support arm (7) is evenly arranged along the circumferential direction of the support ring (9), one end of the support arm (7) is provided with a threaded sleeve (13), the upper and lower ends of the wing plate (4) are respectively provided with a bending portion, the lower bending portion of the wing plate (4) is provided as a hook portion (2), the upper bending portion of the wing plate (4) cooperates with the support arm (7), a connecting block (5) is provided on the upper bending portion, the connecting block (5) and the threaded sleeve (13) are fixedly connected by a bolt (6), and a reinforcing rib (3) is provided on the side of the bending portion of the wing plate (4).

2. The tool for installing a vertical mill body and removing a grinding roller sleeve according to claim 1, characterized in that: A limit clamping block (10) is provided on the outer side of the connecting block (5), and the supporting arm (7) is clamped on the limit clamping block (10).

3. The tool for installing a vertical mill body and removing a grinding roller sleeve according to claim 1, characterized in that: An inner ring (14) is provided on the inner side of the support ring (9), the inner ring (14) is connected to a fixing plate (12) via screws, and the hydraulic jack (11) is provided on the fixing plate (12).

4. The tool for installing a vertical mill body and removing a grinding roller sleeve according to claim 1, characterized in that: A lifting lug (8) is provided in the circumferential direction of the support ring (9).

5. The tool for installing a vertical mill body and removing a grinding roller sleeve according to claim 1, characterized in that: The support arms (7) and the wing plates (4) are both made of flat steel. The lower surface of the support arms (7) is parallel to the surface of the upper bent portion of the wing plates (4). At least three support arms (7) are provided, and the support arms (7) are evenly arranged along the circumferential direction of the support ring (9).

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