Grinding roller shaft pressing ring dismounting tool

Abstract

The utility model relates to the technical field of grinding rollers, in particular to a grinding roller shaft hold-down ring dismantling tool which comprises a hold-down ring, a plurality of abutting protruding blocks are arranged on the inner side wall of the hold-down ring, the abutting protruding blocks are arranged at equal angles with the axis of the hold-down ring as the center, the abutting protruding blocks are arranged close to one end of the hold-down ring, and the other end of the hold-down ring is arranged close to the other end of the hold-down ring. The device is characterized by further comprising a hydraulic jack, a jacking column fixed to a rod head of a piston rod of the hydraulic jack, an abutting ring detachably connected to the jacking column and a plurality of corresponding protruding blocks arranged on the outer side wall of the abutting ring, and the corresponding protruding blocks are arranged at equal angles with the axis of the abutting ring as the center; the roller type vertical mill jacking tool can effectively avoid deformation and cracking caused by jacking of the hydraulic jack during tool dismantling, frequent replacement of the jacking tool is not needed, the maintenance time of the roller type vertical mill is shortened, the maintenance efficiency of the roller type vertical mill is improved, and production and use of the roller type vertical mill are better facilitated.

Description

Technical Field

[0001] This utility model relates to the field of grinding roller technology, specifically a tool for removing the pressing ring of a grinding roller shaft. Background Technology

[0002] Vertical roller mills are mainly used for grinding cement raw materials and other industrial raw materials such as those used in construction, chemicals, and ceramics. Their structure consists of a foundation, transmission device, grinding disc, grinding rollers, rocker arm assembly, tensioning device, upper casing, middle casing, lower casing, support device, and separator. The grinding rollers, a crucial component, are arranged in four sections within the mill, forming a 90° angle with each other. The roller shafts are fixedly hinged to the rocker arm bearing seats by two sets of clamping rings. When the grinding rollers need to be replaced after a certain period of operation, the roller-flipping device can be flipped out of the casing, and the outer clamping rings on the roller shafts can be removed.

[0003] However, during actual maintenance, the clamping ring, made of # steel, is large and heavy, possessing good strength and resistance to deformation. In contrast, the original hydraulic jacking fixture is made of 40mm thick Q235 steel plate. Due to the material and manufacturing process, the Q235 fixture has relatively weaker resistance to deformation compared to the 45# steel fixture when removing the clamping ring. When removing the clamping ring, the original hydraulic jacking fixture is prone to deformation and cracking under the support of the hydraulic jack, making it easily damaged. The process of disassembling and replacing the jacking fixture is time-consuming, affecting the maintenance time of the roller mill, reducing its maintenance efficiency, and hindering production. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned shortcomings by providing a tooling for removing the pressing ring of the grinding roller shaft. This tooling can effectively prevent deformation and cracking of the hydraulic jack support due to the removal of the tooling, eliminate the need for frequent replacement of the support tooling, shorten the maintenance time of the roller vertical mill, improve the maintenance efficiency of the roller vertical mill, and make it more conducive to the production and use of the roller vertical mill.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A tooling for removing a grinding roller shaft clamping ring includes a clamping ring, on the inner sidewall of which are provided multiple abutting protrusions. The multiple abutting protrusions are arranged at equal angles with the axis of the clamping ring as the center. The abutting protrusions are located near one end of the clamping ring. The tooling is characterized by further including a hydraulic jack, a top column fixed to the piston rod head of the hydraulic jack, an abutting ring detachably connected to the top column, and multiple corresponding protrusions arranged on the outer sidewall of the abutting ring. The multiple corresponding protrusions are arranged at equal angles with the axis of the abutting ring as the center.

[0007] Furthermore, an abutment post is fixed to the end of the top post.

[0008] Furthermore, the abutting post and the abutting ring are coaxially arranged.

[0009] Furthermore, the inner wall of the abutment ring is provided with an internal thread, and the outer wall of the top column is provided with an external thread, the external thread being screwed tightly with the internal thread.

[0010] The beneficial effects of the utility model are:

[0011] In practical applications, the abutment ring is inserted into the clamping ring, and the hydraulic jack is rotated so that the corresponding protrusion is aligned with the abutment protrusion. The piston rod of the hydraulic jack retracts, driving the corresponding protrusion to abut against the abutment protrusion, thus pulling the abutment ring out of the rocker arm bearing seat. This invention effectively avoids deformation and cracking of the hydraulic jack support during tooling removal, eliminating the need for frequent replacement of the support tooling, shortening the maintenance time of the roller vertical mill, improving the maintenance efficiency of the roller vertical mill, and making it more conducive to the production and use of the roller vertical mill. Attached Figure Description

[0012] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0013] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0014] Figure 3 This is a schematic diagram of the abutment ring in this utility model;

[0015] Figure 4 This is a schematic diagram of the clamping ring structure;

[0016] Reference numerals: clamping ring 10; abutting protrusion 101; hydraulic jack 1; top column 2; abutting ring 3; corresponding protrusion 31; internal thread 32; abutting column 4. Detailed Implementation

[0017] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a tooling for removing the clamping ring of a grinding roller shaft includes a clamping ring 10. Multiple abutting protrusions 101 are provided on the inner wall of the clamping ring 10. These abutting protrusions 101 are arranged at equal angles around the axis of the clamping ring 10. The abutting protrusions 101 are positioned near one end of the clamping ring 10. The tooling further includes a hydraulic jack 1, a top column 2 fixed to the piston rod head of the hydraulic jack 1, an abutting ring 3 detachably connected to the top column 2, and multiple corresponding protrusions 31 provided on the outer wall of the abutting ring 3. These corresponding protrusions 31 are arranged at equal angles around the axis of the abutting ring 3.

[0018] In use, the abutment ring 3 is inserted into the clamping ring 10, and the hydraulic jack 1 is rotated so that the corresponding protrusion 31 is aligned with the abutment protrusion 101. The piston rod of the hydraulic jack 1 retracts, driving the corresponding protrusion 31 to abut against the abutment protrusion 101, thus pulling the abutment ring 3 out of the rocker arm bearing seat. This utility model can effectively avoid the deformation and cracking of the top support of the hydraulic jack 1 during disassembly, eliminating the need for frequent replacement of the top support tooling, shortening the maintenance time of the roller vertical mill, improving the maintenance efficiency of the roller vertical mill, and making it more conducive to the production and use of the roller vertical mill.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the end of the top post 2 is fixed with an abutment post 4; in this embodiment, during the process of the corresponding protrusion 31 abutting against the abutment protrusion 101 and pulling out the clamping ring 10, the abutment post 4 abuts against the grinding roller shaft to prevent the grinding roller shaft from being pulled out.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the abutting post 4 and the abutting ring 3 are coaxially arranged; in this embodiment, the abutting post 4 can be directly facing the grinding roller shaft when the abutting post 4 and the abutting ring 3 are coaxially arranged.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the inner wall of the abutment ring 3 is provided with an internal thread 32, and the outer wall of the top post 2 is provided with an external thread. The external thread and the internal thread 32 are screwed together. In this embodiment, the abutment ring 3 is detachably connected to the top post 2 by screwing the external thread and the internal thread 32 together.

[0022] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. A tooling for removing a grinding roller shaft clamping ring, comprising a clamping ring (10), wherein a plurality of abutting protrusions (101) are provided on the inner sidewall of the clamping ring (10), the plurality of abutting protrusions (101) are arranged at equal angles around the axis of the clamping ring (10), and the abutting protrusions (101) are located near one end of the clamping ring (10), characterized in that: It also includes a hydraulic jack (1), a top column (2) fixed on the piston rod head of the hydraulic jack (1), an abutment ring (3) detachably connected to the top column (2), and multiple corresponding protrusions (31) disposed on the outer side wall of the abutment ring (3), the multiple corresponding protrusions (31) being arranged at equal angles with the axis of the abutment ring (3) as the center.

2. The tooling for removing the clamping ring of a grinding roller shaft according to claim 1, characterized in that, The top post (2) is fixed with an abutment post (4) at its end.

3. The tooling for removing the clamping ring of a grinding roller shaft according to claim 2, characterized in that, The abutting post (4) and the abutting ring (3) are coaxially arranged.

4. The tooling for removing the clamping ring of a grinding roller shaft according to claim 1, characterized in that, The inner wall of the abutment ring (3) is provided with an internal thread (32), and the outer wall of the top column (2) is provided with an external thread, and the external thread is tightened with the internal thread (32).

Images