CN216588599U

CN216588599U - Central driving structure of shield

Info

Publication number: CN216588599U
Application number: CN202123334037.2U
Authority: CN
Inventors: 杨旭明; 解萍; 杨启双; 曹磊; 刁振轩
Original assignee: Jiangsu Geruite Pipe Network Engineering Co ltd
Current assignee: Jiangsu Geruite Pipe Network Engineering Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-24
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a central drive structure of shield structure, the motor spindle comprises a spindle, transition ring flange, main shaft cover, gear drive mechanism, bearing housing and gland have been cup jointed in proper order from the front to the back on the main shaft, be equipped with the thrust aligning roller bearing that the cover was located on the main shaft and was linked to each other with gear drive mechanism in the bearing housing, be equipped with sealing washer and the copper sheathing that the cover was located on the main shaft from the front to the back in proper order in the main shaft cover. Through the arrangement, the diameter of the main shaft is relatively small, the thrust self-aligning roller bearing can bear axial thrust, the copper sleeve can bear radial load and bending moment, and the sealing ring additionally arranged in the main shaft sleeve is less in wear and more reliable in sealing.

Description

Central driving structure of shield

Technical Field

The utility model belongs to the technical field of the shield constructs owner and drives, especially, relate to a central drive structure of shield structure.

Background

The shield machine is a tunnel boring machine using a shield method, and is widely used in tunnel engineering of subways, railways, highways, municipal works, hydropower and the like. The driving system determines important data such as maximum torque, excavation capacity and the like of the shield machine, and the structure of the driving system needs higher strength to bear larger torque, so that the main driving system is an important component of the shield machine and has high manufacturing cost. The traditional main drive usually adopts gear speed reduction transmission, and is matched with a turntable bearing with internal teeth, the turntable bearing is connected with a sealing ring/ring, and a cutter head and the sealing ring/ring are connected by a flange plate. The structural design often needs a larger turntable bearing, so that a connected flange plate is large, and therefore, a larger space is occupied; more seals and larger bearings result in higher cost of the main drive section.

Disclosure of Invention

The utility model discloses the problem that solves is: in order to solve the technical problem that traditional main drive mechanism exists, the utility model provides a central drive structure of shield structure, simple structure, compactness, sealing condition are better, save space, and the cost is lower.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a central drive structure of shield, includes the main shaft, the cover is equipped with transition ring flange, main shaft cover, gear drive mechanism, bearing housing and gland from the front in proper order after to on the main shaft, be equipped with the thrust self-aligning roller bearing that the cover was located on the main shaft and was linked to each other with gear drive mechanism in the bearing housing, be equipped with sealing washer and the copper sheathing of cover on the main shaft in proper order after to in the main shaft cover from the front.

The gear drive structure establishes the gear wheel that installs on the main shaft and links to each other with thrust self-aligning roller bearing including the cover, fixed cover is equipped with the mounting panel of colored dish on the bearing housing, the supporting connection has a plurality of pinions with gear wheel engaged with on the mounting panel, every the pinion all links to each other through the driving motor that connecting axle and mounting panel rear side were equipped with.

The transition flange plate and the main shaft are of a split structure, and the transition flange plate and the large gear are connected with the main shaft through splines.

The main shaft comprises a first shaft body and a second shaft body connected with the first shaft body, the diameter of the first shaft body is larger than that of the second shaft body, the surfaces of two ends of the first shaft body are respectively provided with an external spline, and the inner rings of the transition flange plate and the large gear are respectively provided with an internal spline matched with the external spline on the corresponding side.

And the outer ring of the mounting plate is provided with a mounting hole for fixing the central driving structure to a front shield of the shield machine.

And a plurality of stud bolts connected with the cutter head are distributed on the transition flange plate.

The utility model discloses the technological effect who brings:

through the arrangement of the main shaft, the thrust self-aligning roller bearing and the copper sleeve, compared with a plurality of circumferentially arranged twisting leg structures of the turntable bearing, the diameter of the main shaft of the device is smaller, and when the rotating speed is fixed, the diameter is smaller, the speed of a point line on the diameter is smaller, so that the friction loss is smaller; therefore, the main shaft of the device can reduce the abrasion of the sealing ring additionally arranged in the main shaft sleeve. Moreover, the self-aligning thrust roller bearing can bear axial thrust, and the copper sleeve can bear radial load and bending moment, so that the abrasion degree of the sealing ring is smaller, and the sealing is more reliable.

Through setting up the main shaft, the transition ring flange, the gear wheel, pinion and driving motor, driving motor provides power for the pinion, pinion and gear wheel meshing, and the drive gear wheel rotates, because all link to each other through the spline between main shaft and transition ring flange and the gear wheel, but through the spline connection transmission great moment of torsion, the blade disc of drive and the installation of transition ring flange that can great dynamics.

Drawings

Fig. 1 is an internal plan view of the present invention.

Fig. 2 is an overall plan view of the present invention.

Fig. 3 is a schematic perspective view of the present invention.

Fig. 4 is a schematic structural diagram of the main shaft of the present invention.

Fig. 5 is a schematic plan view of the spindle of the present invention.

Fig. 6 is a schematic structural diagram of the middle transition flange plate of the present invention.

In the figure, a main shaft 1, a transition flange 2, a stud 3, a sealing ring 4, a copper bush 5, a main shaft bush 6, a pinion 7, a driving motor 8, a mounting plate 9, a self-aligning thrust roller bearing 10, a bearing bush 11, a gland 12, a gearwheel 13, a first shaft 14, a second shaft 15 and a mounting hole 16 are arranged.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The central driving structure of the shield shown in fig. 1-6 comprises a main shaft 1, wherein a transition flange 2, a main shaft sleeve 6, a gear driving mechanism, a bearing sleeve 11 and a gland 12 are sequentially sleeved on the main shaft 1 from front to back, the transition flange 2 is used for connecting a cutter head, and a plurality of studs 3 used for fixing the cutter head are distributed on the transition flange 2.

A sealing ring 4 and a self-lubricating copper sleeve 5 which are sleeved on the main shaft 1 are sequentially arranged in the main shaft sleeve 6 from front to back; a thrust self-aligning roller bearing 10 which is sleeved on the main shaft 1 and connected with the gear driving mechanism is arranged in the bearing sleeve 11. The sealing rings 4 can be arranged side by side according to needs, and the sealing rings 4 are used for preventing muck from entering the main shaft sleeve 6 and further entering the large gear 13 of the gear driving mechanism and the self-aligning thrust roller bearing 10, so that the damage to key parts is caused.

In addition, the traditional shield center driving structure adopts a turntable bearing to connect a sealing ring, and a cutter head and the sealing ring are connected by a flange plate. A plurality of torsion legs (namely inclined plates or columns) are arranged on the circumference of the turntable bearing, and because a plurality of torsion legs are arranged on the circumference, the diameter of the required flange plate is larger, and the larger the diameter is, the larger the size of the sealing ring 4 is required to be; the spindle 1 of the present embodiment occupies a smaller diameter than a turntable bearing, and when the rotation speed is constant, the smaller the diameter is, the smaller the speed of the dot line on the diameter is, so the friction loss is smaller. The present embodiment can reduce the wear of the seal ring 4 by providing the main shaft 1. Moreover, the self-lubricating copper sleeve 5 in the embodiment can bear radial load and bending moment, and the self-aligning thrust roller bearing 10 can bear axial thrust, so that the sealing ring 4 additionally arranged in the main shaft sleeve 6 is less in wear and more reliable in sealing.

The gear driving structure comprises a large gear 13 which is sleeved on a main shaft 1 and connected with a thrust self-aligning roller bearing 10, a mounting plate 9 in a shape of a flower disc is fixedly sleeved on a bearing sleeve 11, a plurality of small gears 7 meshed with the large gear 13 are connected to the mounting plate 9 in a supporting mode, the small gears 7 are evenly distributed on the mounting plate 9 in the circumferential direction, and each small gear 7 is connected with a driving motor 8 arranged on the rear side of the mounting plate 9 through a connecting shaft. The transition flange 2 and the large gear 13 are connected with the main shaft 1 through splines, and the connection of the transition flange 2 and the large gear 13 with the main shaft 1 has the same angular velocity. The driving motor 8 provides power for the pinion 7, the pinion 7 is meshed with the large gear 13, the large gear 13 is driven to rotate, and the main shaft 1 is connected with the transition flange 2 and the large gear 13 through splines, so that large torque can be transmitted through spline connection, and the cutter disc mounted on the transition flange 2 can be driven with large force.

The specific connection structure between the transition flange 2 and the large gear 13 and the main shaft 1 is as follows: the main shaft 1 comprises a first shaft body 14 and a second shaft body 15 connected with the first shaft body 14, the diameter of the first shaft body 14 is larger than that of the second shaft body 15, the surfaces of two ends of the first shaft body 14 are respectively provided with an external spline, and the inner rings of the transition flange 2 and the large gear 13 are respectively provided with an internal spline matched with the external spline on the corresponding side.

In this embodiment, the mounting plate 9 in a shape of a flower disc is fixedly sleeved on the bearing sleeve 11, and the outer ring of the mounting plate 9 is provided with a mounting hole 16 for fixing the whole central driving structure to the front shield of the shield machine.

The whole central driving structure of the embodiment has the characteristics of compact structure, good sealing condition and low cost, the transition flange plate 2 and the main shaft 1 are of split structures, the material cost and the processing cost can be reduced, the later maintenance cost is reduced, the whole shaft cannot be replaced due to the damage of the main shaft 1, and only one of the whole shafts needs to be replaced. And moreover, by adopting a split structure, the main shaft 1 can be connected with the large-size transition flange 2, and more studs 3 can be arranged on the large-size transition flange 2, so that the large-size transition flange can bear larger torque.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a central drive structure of shield structure which characterized in that: the spindle comprises a spindle body, a transition flange plate, a spindle sleeve, a gear driving mechanism, a bearing sleeve and a gland are sequentially sleeved on the spindle from front to back, a self-aligning thrust roller bearing which is sleeved on the spindle and connected with the gear driving mechanism is arranged in the bearing sleeve, and a sealing ring and a copper sleeve which are sleeved on the spindle are sequentially arranged in the spindle sleeve from front to back.

2. The central driving structure of a shield according to claim 1, wherein: the gear drive structure establishes the gear wheel that installs on the main shaft and links to each other with thrust self-aligning roller bearing including the cover, fixed cover is equipped with the mounting panel of colored dish on the bearing housing, the supporting connection has a plurality of pinions with gear wheel engaged with on the mounting panel, every the pinion all links to each other through the driving motor that connecting axle and mounting panel rear side were equipped with.

3. The central driving structure of a shield according to claim 2, wherein: the transition flange plate and the main shaft are of a split structure, and the transition flange plate and the large gear are connected with the main shaft through splines.

4. A central driving structure of a shield according to claim 3, characterized in that: the main shaft comprises a first shaft body and a second shaft body connected with the first shaft body, the diameter of the first shaft body is larger than that of the second shaft body, the surfaces of two ends of the first shaft body are respectively provided with an external spline, and the inner rings of the transition flange plate and the large gear are respectively provided with an internal spline matched with the external spline on the corresponding side.

5. The central driving structure of a shield according to claim 2, wherein: and the outer ring of the mounting plate is provided with a mounting hole for fixing the central driving structure to a front shield of the shield machine.

6. The central driving structure of a shield according to claim 1, wherein: and a plurality of stud bolts connected with the cutter head are distributed on the transition flange plate.