Speed reducer structure for edge transmission of vertical mill equipment

Abstract

The utility model discloses a speed reducer structure for edge transmission of vertical mill equipment, which comprises a support shell, a groove type fixed disc rack, a movable connecting disc, a pinion and a permanent magnet motor, large teeth are arranged on the peripheral surface of the movable connecting disc, a runner plate is arranged at the lower part of the movable connecting disc, and a thrust bearing bush is arranged between the runner plate and the groove type fixed disc rack up and down. A sliding device is arranged between the groove-shaped fixing disc frame and the movable connecting disc in the radial direction, a stress cover plate is screwed to the upper surface of the movable connecting disc and is in threaded connection with the grinding disc, the lower portion of the groove-shaped fixing disc frame and the upper end of a load-bearing supporting shell are mutually supported and are in threaded connection and fixed, and a permanent magnet motor is arranged in the load-bearing supporting shell. A pinion supporting device is arranged on the load bearing supporting shell, and an output shaft of the permanent magnet motor penetrates through the pinion supporting device and is connected with a pinion; the sliding device moves outwards, the radial force is enhanced, and the bearing is not prone to damage. The permanent magnet motor is energy-saving, high in transmission efficiency and easy to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of roller type vertical mill equipment transmission, in particular to a speed reducer structure for edge transmission of vertical mill equipment. Background Art

[0002] The vertical heavy-duty reducers on the market are generally used in roller mills. They not only need to transmit a large rotational torque to the grinding disc, but also bear the large dynamic load brought by the grinding roller and the grinding disc. Therefore, the requirements for them are much higher than those for general reducers, and therefore their prices are also much higher. Generally, reducers for vertical mills adopt a combined transmission mode of bevel gear pairs, parallel shaft gear pairs and planetary gear pairs. A pair of right-angle bevel gear pairs, parallel shaft gear pairs and a set of input shafts are vertically upward planetary gear pairs, and the two are connected by a double-tooth coupling. The sun gear is supported on the thrust block with a ball head, and the planet carrier can also swing with the swing of the tilting thrust bearing. These two degrees of freedom make the inner ring gear and three (four) planetary gears evenly stressed. The inner ring gear is rigidly fixed on the housing, and the cylindrical housing is designed to provide an ideal support form for the axial thrust bearing. Due to the large power transmission and the large diameter of the bevel gear, the large-size bevel gear is difficult to machine and heat treat, and the precision is difficult to control. In addition, due to the large speed ratio, large dynamic load, complex internal structure, high manufacturing and procurement costs, and high failure rate, the reducer is a key device for the vertical mill. The reducer of the vertical mill needs to transmit the torque input by the main motor to the grinding roller, and also bears the gravity of the grinding disc / grinding roller and the crushing and grinding force. It is a very important equipment. Since the reducer is usually driven by an electric motor, the power of the motor is relatively large, usually in the range of 2000-10000KW, especially the high-power electric motor, which has a high manufacturing cost, difficult maintenance, and expensive price, which increases the cost.

[0003] Chinese patent application No. 202010850991.8 discloses an edge-driven vertical heavy-duty reducer for roller vertical mill equipment, comprising a load-bearing support cylinder, an output support coupling disc, a large gear ring, a motor and a right-angle reducer; wherein the outer surface of the output support coupling disc is provided with a connecting flange; wherein the connecting flange is connected to the large gear ring by a plurality of bolts; the large gear ring is meshed with a plurality of pinions; each motor is connected to the right-angle reducer through a high-speed coupling; wherein one end of the right-angle reducer is connected to a low-speed coupling; the low-speed coupling is connected to the pinion shaft; the pinion shaft passes through the support bearing seat and the top end is connected and fixed to the pinion; the support member is fixed on the load-bearing support cylinder and a self-aligning bearing is fixed at the center end; the bottom end center part of the output support coupling disc is arranged in the self-aligning bearing; the utility model changes the original one-motor drive to multiple motor drive, and the power of a single motor is greatly reduced, which brings convenience to frequency conversion speed regulation; the structure is simple, the operation reliability is high; the transmission efficiency is high; the maintenance is convenient; and the manufacturing cost is greatly reduced.

[0004] The edge drive vertical heavy-duty speed reducer for roller vertical mills has the following deficiencies in practical applications: 1. A self-aligning bearing is fixedly provided at the center end of the support member, and the self-aligning bearing is excessively lower than the tooth dynamic force point level. 2. A self-aligning bearing is fixedly provided at the center end of the support member and is excessively close to the center position, and the radial force of the bearing is relatively small. Therefore, the service life of the rolling bearing is low and it is easy to be damaged. It needs to be frequently repaired and maintained, and improvement is required. Therefore, a speed reducer structure for the edge drive of vertical mill equipment is proposed. Summary of the Utility Model

[0005] The technical problem to be solved by the present utility model is to overcome the existing defects, provide a speed reducer structure for the edge drive of vertical mill equipment, the outward movement of the sliding device position, the strengthening of the radial force, and the bearings are not easily damaged. The permanent magnet motor is energy-saving, has high transmission efficiency, is easy to repair, and has a long service life at the same time. The structure of the edge drive is simplified and the cost is low; the operation reliability is high, it is easy to repair, and has a long service life at the same time, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the present utility model provides the following technical solution: A speed reducer structure for the edge drive of vertical mill equipment, including a support housing, a groove-shaped fixed disc frame, a movable coupling disc, a small gear and a permanent magnet motor. The outer peripheral surface of the movable coupling disc is provided with large teeth, a mirror plate is provided at the lower part of the movable coupling disc, a thrust bearing is provided between the mirror plate and the groove-shaped fixed disc frame up and down, a sliding device is provided between the groove-shaped fixed disc frame and the movable coupling disc radially, a force-bearing cover plate is screwed on the upper surface of the movable coupling disc, the force-bearing cover plate is screwed to the grinding disc, the lower part of the groove-shaped fixed disc frame and the upper end of the load-bearing support housing support and are screwed and fixed to each other, a permanent magnet motor is provided in the load-bearing support housing, a small gear support device is provided on the load-bearing support housing, the output shaft of the permanent magnet motor passes through the small gear support device and is connected with a small gear, and the small gear meshes with the large teeth of the movable coupling disc.

[0007] Further, the large teeth of the movable coupling disc are straight gears, the permanent magnet motor is vertically installed, and the body of the permanent magnet motor serves as the load-bearing support housing.

[0008] Further, the large teeth of the movable coupling disc are large bevel gears, the permanent magnet motor is horizontally installed, the small gear installed at the output end of the permanent magnet motor is a small bevel gear, and the small bevel gear meshes with the large bevel gear.

[0009] Further, the position where the sliding device is provided between the groove-shaped fixed disc frame and the movable coupling disc radially is designed in the horizontal direction; a sliding device is provided between the highest point of the centripetal side wall of the groove-shaped fixed disc frame and the inner side wall of the movable coupling disc. The centripetal side wall of the groove-shaped fixed disc frame has a two-layer design of the annular wall height, and the sliding device between the upper part of the groove-shaped fixed disc frame and the movable coupling disc is designed at one level.

[0010] Furthermore, the sliding device provided between the circumferential side wall of the groove-type fixed disc frame and the radial direction of the movable coupling disc is a cylindrical rolling bearing or a vertical half-wall stainless steel pipe fitting.

[0011] Furthermore, the position where the sliding device is provided between the groove-type fixed disc frame and the radial direction of the movable coupling disc is designed to be slightly below the horizontal. The inner circumference or outer circumference of the lower end of the movable coupling disc is screwed with a bearing shoulder, and the centripetal or circumferential side of the bearing shoulder is in sliding contact with the sliding device. A sliding device is provided between the bearing shoulder and the side wall of the corresponding groove-type fixed disc frame in the radial direction.

[0012] Furthermore, a sliding device is provided between the centripetal side of the bearing shoulder and the centripetal inner side wall of the groove-type fixed disc frame.

[0013] Furthermore, a sliding device is provided between the outer circumferential side of the bearing shoulder and the centripetal inner side wall of the groove-type fixed disc frame.

[0014] Furthermore, a sliding device is provided between the centripetal inner side wall of the bearing shoulder and the circumferential side wall of the groove-type fixed disc frame.

[0015] Furthermore, a sliding device is provided between the outer side wall of the bearing shoulder and the centripetal inner side wall of the groove-type fixed disc frame.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. Due to the outward movement of the position of the sliding device, the structure of the speed reducer is optimized. The hoisting force-bearing cover plate can be used to overhaul the sliding device, and the replacement operation has high reliability and is convenient; the circumferential direction of the bearing is enlarged, the radial force is enhanced, the sliding device is not easily damaged, and the edge drive transmission efficiency is high; the manufacturing cost is greatly reduced; the original single-motor drive is changed to a multi-motor drive, and the motor power is greatly increased, which brings convenience to frequency conversion speed regulation.

[0018] 2. When there are a very small number of semi-wall stainless steel pipes with slightly higher heights and are radially loaded, they are first radially compressed and elastically compressed and deformed until they are as high as many semi-wall pipes, and jointly bear the load pressure. The equal-height surfaces of the semi-wall stainless steel pipe clusters are all in sliding contact with the corresponding mirror plates, providing support for the radial load of the vertical mill speed reducer. This kind of semi-wall stainless steel pipe cluster does not need to specially grind, replace, process, and assemble the arc surface, and the replacement is convenient; BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic cross-sectional structure diagram of the present utility model;

[0020] Figure 2 It is a horizontal cross-sectional view of the permanent magnet motor of the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the radial sliding device and the external tooth support sliding connection disc of the present utility model arranged on a horizontal plane;

[0022] Figure 4 This is a schematic structural diagram of a sliding device arranged between the centripetal side of the centripetal bearing shoulder and the centripetal inner side wall of the groove of the present utility model;

[0023] Figure 5 This is a schematic structural diagram of a sliding device arranged between the outer peripheral side of the centripetal bearing shoulder and the centripetal inner side wall of the groove of the present utility model;

[0024] Figure 6 This is a schematic structural diagram of a sliding device arranged between the centripetal inner side wall of the circumferential bearing shoulder and the circumferential side wall of the groove of the present utility model;

[0025] Figure 7 This is a schematic structural diagram of a sliding device arranged between the outer side wall of the circumferential bearing shoulder and the centripetal inner side wall of the groove of the present utility model;

[0026] Figure 8 This is a schematic structural diagram of a sliding device arranged between the centripetal side of the centripetal bearing shoulder and the centripetal inner side wall of the groove of the horizontally installed permanent magnet motor of the present utility model.

[0027] In the figure: 1 load-bearing support housing, 2 groove-shaped fixed disc frame, 3 movable coupling disc, 4 bearing shoulder, 5 force-bearing cover plate, 6 sliding device, 7 mirror plate, 8 thrust bearing bush, 9 large gear, 10 small gear, 11 small gear support device, 12 permanent magnet motor. Specific embodiments

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, 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 should not be construed as a limitation to the present utility model.

[0029] Please refer to Figure 1-8, the present utility model provides a technical solution: a speed reducer structure for edge drive of a vertical mill equipment, including a support housing 1, a groove-shaped fixed disk frame 2, a movable coupling disk 3, a pinion 10 and a permanent magnet motor 12. The outer peripheral surface of the movable coupling disk 3 is provided with a large gear 9, and a mirror plate 7 is arranged at the lower part of the movable coupling disk 3. A thrust bearing 8 is arranged between the upper and lower parts of the mirror plate 7 and the groove-shaped fixed disk frame 2. A sliding device 6 is arranged between the groove-shaped fixed disk frame 2 and the movable coupling disk 3 in the radial direction. The upper surface of the movable coupling disk 3 is screwed with a force-receiving cover plate 5, and the force-receiving cover plate 5 is screwed with the grinding table. The lower part of the groove-shaped fixed disk frame 2 and the upper end of the load-bearing support housing 1 support and are screwed and fixed to each other. A permanent magnet motor 12 is arranged in the load-bearing support housing 1. A pinion support device 11 is arranged on the load-bearing support housing 1. The output shaft of the permanent magnet motor 12 passes through the pinion support device 11 and is connected with a pinion 10. The pinion 10 meshes with the large gear 9 of the movable coupling disk 3. The pinion 10 and the large gear 9 are both located in the sealing cover. The large and small gears are lubricated, cooled and smeared with wear-resistant butter. With the outward movement of the position of the sliding device 6, the radial force is strengthened and the bearing is not easily damaged; the permanent magnet motor 12 is energy-saving, has high transmission efficiency, is easy to repair, and has a long service life at the same time. The structure of the edge drive is simplified and the cost is low. The groove-shaped fixed disk frame 2 and the movable coupling disk 3 adopt a hollow design inside, which can save materials, so that the structural strength and strength will be enhanced and the deformation amount will also be reduced.

[0030] A bearing is arranged between the highest point of the centripetal side wall of the groove-shaped fixed disk frame 2 and the inner side wall of the movable coupling disk 3. The tooth power of the large and small gears and the radial bearing capacity of the bearing are in the same horizontal position, and the bearing is not easily damaged. The structure of the bearing, the bearing positioning shaft and the fixed positioning shaft located at the center of the movable coupling disk 3 is omitted, saving raw materials. The body of the permanent magnet motor serves as a part of the support for the vertical mill disk body, and the process is particularly simple and easy to implement.

[0031] As shown in the appendix Figure 1 ; the large gear 9 of the movable coupling disk 3 is a spur gear, the permanent magnet motor 12 is installed vertically, and the body of the permanent magnet motor 12 serves as the load-bearing support housing 1.

[0032] As shown in the appendix Figure 2 and the appendix Figure 8 ; the large gear 9 of the movable coupling disk 3 is a large bevel gear, the permanent magnet motor 12 is installed horizontally, and the pinion 10 installed at the output end of the permanent magnet motor 12 is a small bevel gear, and the small bevel gear meshes with the large bevel gear.

[0033] As shown in the appendix Figure 3As shown in the figure; the position where the sliding device 6 is arranged between the centripetal side wall of the groove-shaped fixed disc frame 2 and the movable connecting disc 3 is designed horizontally; the sliding device 6 is arranged between the highest point of the centripetal side wall of the groove-shaped fixed disc frame 2 and the inner side wall of the movable connecting disc 3. The annular wall height of the centripetal side wall of the groove-shaped fixed disc frame 2 is designed in two layers up and down. The sliding device 6 between the upper part of the groove-shaped fixed disc frame 2 and the movable connecting disc 3 is designed on one horizontal plane. When the groove-shaped fixed disc frame 2 is assembled, its upper part and lower part are connected by screwing. A sealing strip is added between the screwing gaps of the upper part and the lower part to prevent oil leakage. This design requires the thrust bearing 8 to be immersed in the engine oil, and the sliding device 6, the large gear 9 and the small gear 10 need to be frequently filled with grease.

[0034] The annular wall height of the centripetal side wall of the groove-shaped fixed disc frame 2 is designed in two layers up and down. The bearing position between the upper part and the movable connecting disc 3 is designed on one horizontal plane. When assembled, its upper part and lower part are connected by screwing, which can reduce the manufacturing cost. Annular grooves are provided in the upper part and the lower part, and sealing rings are arranged to prevent oil leakage. When designed in two layers up and down, the thrust bearing inside the groove-shaped fixed disc frame is convenient for installation and debugging, and the upper disc part can be manufactured independently.

[0035] The sliding device 6 arranged between the circumferential side wall of the groove-shaped fixed disc frame 2 and the movable connecting disc 3 radially is a cylindrical rolling bearing or a vertical half-wall stainless steel pipe fitting. The vertical half-wall stainless steel pipe fitting has a certain length radially, and there is a certain density between two of them. Therefore, the radial load-bearing capacity is large, the vertical installation is convenient, and even if the capacity is particularly small, one can also be designed. When a motor cylinder body is designed for support, the other half can be symmetrically designed with a support.

[0036] The position where the sliding device 6 is arranged between the groove-shaped fixed disc frame 2 and the movable connecting disc 3 radially is designed to be slightly below the horizontal. The inner circumference or outer circumference of the lower end of the movable connecting disc 3 is screwed with a bearing shoulder 4. The centripetal or circumferential side of the bearing shoulder 4 slides into contact with the sliding device 6, and the sliding device 6 is arranged between the bearing shoulder 4 and the side wall of the groove-shaped fixed disc frame 2 corresponding radially.

[0037] As shown in the attachment Figure 4 As shown; the sliding device 6 is arranged between the centripetal side of the bearing shoulder 4 and the centripetal inner side wall of the groove-shaped fixed disc frame 2.

[0038] As shown in the attachment Figure 5 As shown; the sliding device 6 is arranged between the outer circumferential side of the bearing shoulder 4 and the centripetal inner side wall of the groove-shaped fixed disc frame 2.

[0039] As shown in the attachment Figure 6 As shown; the sliding device 6 is arranged between the centripetal inner side wall of the bearing shoulder 4 and the circumferential side wall of the groove-shaped fixed disc frame 2.

[0040] As shown in the attachment Figure 7 As shown; the sliding device is arranged between the outer side wall of the bearing shoulder 4 and the centripetal inner side wall of the groove-shaped fixed disc frame 2.

[0041] In actual production, in addition to being separately manufactured and screwed onto the movable connection plate 3, the bearing shoulder 4 and the mirror plate 7 can also be cast integrally with the movable connection plate 3.

[0042] The sliding device 6 provided between the circumferential side wall of the groove-type fixed disc frame 2 and the bearing shoulder 4 at the lower end of the movable connection disc 3 is a cylindrical rolling bearing.

[0043] The sliding device 6 provided between the centripetal side wall of the groove-type fixed disc frame 2 and the bearing shoulder 4 at the lower end of the movable connection disc 3 is a vertical half-wall stainless steel pipe fitting.

[0044] The vertical half-wall stainless steel pipe is vertically clamped between the highest point of the centripetal side wall of the groove-type fixed disc frame 2 and the inner side wall of the movable connection disc 3. A vertical rectangular opening groove is preset on the inner side wall of the movable connection disc 3 or a vertical rectangular opening groove is milled on the outer peripheral side of the bearing shoulder 4 at the highest point of the centripetal side wall of the groove-type fixed disc frame 2. A sliding mirror surface is provided on the corresponding surface of the opening groove. The clamping form of the half-wall stainless steel pipe in the rectangular groove is that the free end is movable; when there are a very small number of half-wall stainless steel pipes with slightly higher heights, when radially loaded, they are first radially compressed and elastically compressed and deformed to the same height as many half-wall pipes, and jointly bear the load pressure. The equal-height surfaces of the half-wall stainless steel pipe cluster are all in sliding contact with the corresponding mirror surfaces, providing support for the radial load of the vertical mill reducer. This kind of half-wall stainless steel pipe cluster does not need to specifically grind, replace, process, and assemble the arc surface, and the replacement is convenient; the half-wall stainless steel pipe that can be vertically pulled out and replaced is made by the method of extrusion with an extruder or turning on a lathe; the vertical half-wall stainless steel pipe with the characteristic of elastic compression deformation is superior to the round stainless steel pipe, and using the round stainless steel pipe is a deteriorated design and is not convenient to adopt.

[0045] The outer side of the movable connection disc 3 can be milled into an inclined cone large tooth and meshed with the small gear 10.

[0046] When the vertical mill reducer rotates, the bearing, the thrust bearing pad 8, and the surrounding and inside of the half-wall stainless steel pipe are filled with cooling oil. Due to the hydrodynamic effect of the machine, a hydrodynamic lubrication effect is generated. The internal lubricating oil is conducted through the oil inlet and the oil outlet to the outside of the housing and connected to the external oil exchange system for cooling. The large gear 9 and the small gear 10 are lubricated and cooled with wear-resistant butter.

[0047] The working principle of the present utility model is as follows: Since a large gear 9 is fixed on the outer surface of the movable coupling disk 3, the permanent magnet motor 12 drives the small gear 10, and the small gear 10 meshes with the large gear 9, so that the movable coupling disk 3 rotates accordingly; thereby driving the grinding disk to rotate. The present utility model changes from being driven by one original motor to being driven by multiple motors. The power of a single motor is greatly reduced, while the power of multiple motors is greatly increased. The load power utilization rate of the large gear 9 is doubled, which also brings convenience to permanent magnet variable frequency speed regulation. The sealing cover ensures safety and environmental protection; high-pressure lubricating oil is transported through the high-pressure oil inlet pipe into the gaps between the movable coupling disk 3, the thrust bearing 8, the sliding device 6, the large gear 9, and the small gear 10 to ensure the smooth and flexible rotation of the movable coupling disk 3.

[0048] The above has shown and described the basic principle, main features and advantages of the present utility model. Without departing from the spirit and scope of the present utility model, there are various changes and improvements to the present utility model, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A speed reducer structure for edge drive of a vertical mill equipment, comprising a support housing (1), a groove-shaped fixed disc frame (2), a movable coupling disc (3), a pinion (10) and a permanent magnet motor (12), characterized in that: The outer peripheral surface of the movable coupling disc (3) is provided with large teeth (9). A mirror plate (7) is arranged at the lower part of the movable coupling disc (3). A thrust bearing bush (8) is arranged between the mirror plate (7) and the groove-type fixed disc frame (2) up and down. A sliding device (6) is arranged between the groove-type fixed disc frame (2) and the movable coupling disc (3) radially. The upper surface of the movable coupling disc (3) is screwed with a force-bearing cover plate (5). The force-bearing cover plate (5) is screwed with a grinding disc. The lower part of the groove-type fixed disc frame (2) and the upper end of the load-bearing support housing (1) support each other and are screwed and fixed. A permanent magnet motor (12) is arranged in the load-bearing support housing (1). A pinion support device (11) is arranged on the load-bearing support housing (1). The output shaft of the permanent magnet motor (12) passes through the pinion support device (11) and is connected with a pinion (10). The pinion (10) meshes with the large teeth (9) of the movable coupling disc (3).

2. The speed reducer structure of the edge drive of a vertical mill equipment according to claim 1, characterized in that: The large teeth (9) of the movable coupling disc (3) are spur gears. The permanent magnet motor (12) is vertically installed, and the body of the permanent magnet motor (12) serves as the load-bearing support housing (1).

3. The speed reducer structure for edge drive of a vertical mill equipment according to claim 1, characterized in that: The large teeth (9) of the movable coupling disc (3) are large bevel gears. The permanent magnet motor (12) is horizontally installed. The pinion (10) installed at the output end of the permanent magnet motor (12) is a small bevel gear, and the small bevel gear meshes with the large bevel gear.

4. A speed reducer structure for edge drive of a vertical mill equipment according to claim 1, characterized in that: The position where the sliding device (6) is arranged between the groove-type fixed disc frame (2) and the movable coupling disc (3) radially is designed in the horizontal direction; the sliding device (6) is arranged between the highest point of the centripetal side wall of the groove-type fixed disc frame (2) and the inner side wall of the movable coupling disc (3). The circumferential wall height of the centripetal side wall of the groove-type fixed disc frame (2) is designed in two layers up and down. The sliding device (6) between the upper part of the groove-type fixed disc frame (2) and the movable coupling disc (3) is designed on one horizontal plane.

5. The speed reducer structure of the edge drive of a vertical mill equipment according to claim 4, characterized in that: The sliding device (6) arranged between the circumferential side wall of the groove-type fixed disc frame (2) and the movable coupling disc (3) radially is a cylindrical rolling bearing or a vertical half-wall stainless steel pipe fitting.

6. The speed reducer structure of the edge drive of a vertical mill equipment according to claim 1, characterized in that: The position where the sliding device (6) is arranged between the groove-type fixed disc frame (2) and the movable coupling disc (3) radially is designed to be slightly below the horizontal. An axial shoulder (4) is screwed on the inner circumference or outer circumference of the lower end of the movable coupling disc (3). The centripetal or circumferential side of the axial shoulder (4) is in sliding contact with the sliding device (6). The sliding device (6) is arranged between the axial shoulder (4) and the side wall of the groove-type fixed disc frame (2) corresponding radially.

7. The speed reducer structure for edge drive of a vertical mill equipment according to claim 6, characterized in that: The sliding device (6) is arranged between the centripetal side of the axial shoulder (4) and the centripetal inner side wall of the groove-type fixed disc frame (2).

8. A speed reducer structure for edge drive of a vertical mill equipment according to claim 6, characterized in that: The sliding device (6) is arranged between the outer peripheral side of the axial shoulder (4) and the centripetal inner side wall of the groove-type fixed disc frame (2).

9. A speed reducer structure for edge drive of a vertical mill equipment according to claim 6, characterized in that: The sliding device (6) is arranged between the centripetal inner side wall of the axial shoulder (4) and the circumferential side wall of the groove-type fixed disc frame (2).

10. A speed reducer structure for edge drive of a vertical mill equipment according to claim 6, characterized in that: The sliding device is arranged between the outer side wall of the axial shoulder (4) and the centripetal inner side wall of the groove-type fixed disc frame (2).

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