TWI683056B - A shield screw conveyor and shield machine - Google Patents

Abstract

A shield screw conveyor and a shield machine are provided. The shield screw conveyor includes a rotatable cylinder for delivering and discharging muck and a cylinder driving assembly for driving the rotatable cylinder to rotate. The cylinder driving assembly includes a transmission bearing, an output gear and a driving member for driving the output gear to rotate. The transmission bearing is arranged on the circumference of the rotatable cylinder, and an outer ring of the transmission bearing is secured to the rotatable cylinder. The output gear is drivingly engaged with the outer ring of the transmission bearing. The shield machine includes a shield body and the above shield screw conveyor arranged within the shield body. The shield screw conveyor has good stability and reliability, and occupies small space.

Description

Shield screw conveyor and shield machine

The invention relates to the field of shield machines, in particular to a shield screw conveyor and a shield machine.

Shield screw conveyor is a key component for shield machine to realize the function of ballast transportation and earth pressure balance. The driving seal method of the conventional shield screw conveyor mainly adopts the method of combining the copper sleeve and the rubber seal. The copper sleeve seal is used to drive the transmission and have poor stability and adjustment performance, and in the case of strict design width of the original well , The axial space is large, which leads to the length of the screw conveyor is too long, which is not conducive to the arrangement and lifting of the screw conveyor; and the use of rubber seals, rubber is easily broken by the high pressure of the soil, and easily by the rotating cylinder Driven together to rotate, can not guarantee good sealing performance.

The technical problem to be solved by the present invention is to overcome the shortcomings of the conventional technology, and to provide a shield screw conveyor and a shield machine with good running stability, high reliability, and small space occupation.

To solve the above technical problems, the technical solutions proposed by the present invention are:

A shield screw conveyor includes a rotating cylinder for discharging ballast and a cylinder driving assembly for driving the rotating cylinder to rotate, the cylinder driving element includes a transmission bearing, an output gear, and a drive that drives the output gear to rotate The transmission bearing is sleeved on the rotating cylinder, and the outer ring of the transmission bearing is fixedly connected to the rotating cylinder, and the output gear meshes with the outer ring of the transmission bearing for transmission.

As a further improvement of the above technical solution:

It also includes a sealed box body, wherein the rotating cylinder body is provided in the sealed box body, and a rotation gap is provided between the rotating cylinder body and the sealed box body to ensure that the rotating cylinder body can rotate relative to each other, There is a sealing and fitting portion arranged along the axial direction of the rotating cylinder, and a sealing element is provided between the sealing and fitting portion and the rotating cylinder.

The sealing assembly includes a polyurethane sealing ring and a fixed flange. The polyurethane sealing ring is installed on the sealing and fitting portion through the fixing flange. One end of the polyurethane sealing ring is in close contact with the rotating cylinder.

There are a plurality of polyurethane sealing rings, and the plurality of polyurethane sealing rings are arranged along the axial direction of the rotating cylinder.

There are a plurality of fixing flanges, and the plurality of fixing flanges are provided between adjacent polyurethane sealing rings.

The driving member is installed on the sealed box body, the transmission bearing and the output gear are provided in the sealed box body, and the inner ring of the transmission bearing is fixedly installed on the sealed box body.

The sealed box body includes a sealed box body and a box cover, and the sealed box body and the box cover are detachably connected by fasteners.

The rotating cylinder is provided with a connecting part connected with the outer ring of the transmission bearing.

The outer ring of the transmission bearing is connected to the connecting portion by fasteners.

A shield machine includes a shield body and the above-mentioned shield screw conveyor. The shield screw conveyor is provided in the shield body.

Compared with the conventional technology, the advantages of the present invention are:

The cylinder driving element of the present invention uses the output gear and the transmission bearing to realize the driving of the rotating cylinder, that is, when the screw conveyor is working, the output gear directly drives the rotating cylinder to rotate through the outer ring of the transmission bearing, and the rotating cylinder The running stability is good and the reliability is high; and the output gear and transmission bearing are sleeved on the rotating cylinder, the cylinder drive element takes up little space, avoiding the use of the copper sleeve structure to cause the screw conveyor to be too long and not conducive to the screw conveyor The problem of arrangement and lifting. The shield machine of the present invention also has the above-mentioned advantages.

The invention further provides a sealing and matching part on the sealed box body, and a sealing element is provided between the sealing and matching part and the rotating cylinder body, so that when the rotating cylinder body rotates, the ballast in the cylinder body is ensured not to enter the interior of the cylinder driving element, avoiding The pollution of the transmission bearing and the output gear is ensured, the operating environment of the bearing is ensured, and the service life of the barrel driving element is high. The sealing assembly includes a polyurethane sealing ring, which avoids the problem of the sealing ring being broken down by high soil pressure and has good sealing performance.

The present invention will be further described in detail in conjunction with the drawings and specific embodiments of the specification, but it does not limit the protection scope of the present invention.

1 and 2 show an embodiment of the shield screw conveyor of the present invention. The shield screw conveyor 1 includes a rotating cylinder 11, a screw shaft 12 disposed in the rotating cylinder 11, and a rear portion disposed behind the rotating cylinder 11. At the slag outlet 13 at the end, the rotating cylinder 11 rotates and drives the screw shaft 12 to transport the ballast 6 backward to the slag outlet 13 and discharge the ballast 6 from the slag outlet 13. In this embodiment, the shield screw conveyor 1 includes a rotating barrel 11 and a barrel drive assembly 2, the rotary barrel 11 is used to discharge the cutting ballast 6, and the barrel drive assembly 2 is used to drive the rotary barrel 11 to rotate, The cylinder driving element 2 includes a transmission bearing 21, an output gear 22, and a driving member 23 that drives the output gear 22 to rotate. The transmission bearing 21 is sleeved on the rotating cylinder 11, and the outer ring of the transmission bearing 21 is fixedly connected to the rotating cylinder 11 , The output gear 22 meshes with the outer ring of the transmission bearing 21 for transmission. The cylinder driving element 2 of the present invention uses the output gear 22 and the transmission bearing 21 to realize the driving of the rotating cylinder 11, that is, when the shield screw conveyor 1 works, the output gear 22 is directly driven by the outer ring of the transmission bearing 21 The rotation of the rotating cylinder 11 causes the ballast 6 in the shield screw conveyor 1 to be transported backward. The rotating cylinder 11 has good running stability and high reliability; and the output gear 22 and the transmission bearing 21 are sleeved on the rotating cylinder 11 Above, the cylinder drive element 2 takes up less space, avoiding the problem that the use of the copper sleeve structure causes the screw conveyor to be too long, which is not conducive to the screw conveyor arrangement and lifting.

In this embodiment, the rotating cylinder 11 is provided with a connecting portion 111, and the rotating cylinder 11 is connected to the outer ring of the transmission bearing 21 through the connecting portion 111, and its driving structure is simple; in this embodiment, the outer ring of the transmission bearing 21 is The fastener is connected to the connection portion 111.

In this embodiment, the shield screw conveyor 1 further includes a sealed box 3, a rotating cylinder 11 is provided in the sealed box 3, a rotating gap 4 is provided between the rotating cylinder 11 and the sealed box 3, the rotating gap 4 It is used to ensure that the rotating cylinder 11 can rotate relative to the sealing box 3, and the sealing box 3 is provided with a sealing and matching portion 31, which is arranged along the axial direction of the rotating cylinder 11 and between the sealing and matching portion 31 and the rotating cylinder 11 There is a sealing element 5 in between, which effectively prevents the ballast 6 at the rotating gap 4 from entering the cylinder driving element 2 by combining the sealing and matching portion 31 with the sealing element 5 to avoid the pollution of the transmission bearing 21 and the output gear 22, The operating environment of the transmission bearing 21 is ensured, and the service life of the cylinder drive element 2 is high.

In this embodiment, the sealing assembly 5 includes a polyurethane sealing ring 51 and a fixed flange 52. The use of the polyurethane sealing ring 51 avoids the problem of the sealing ring being penetrated by high soil pressure, and its sealing performance is good; meanwhile, the polyurethane sealing ring 51 borrows The fixed flange 52 is installed on the sealing and matching portion 31, and one end of the polyurethane sealing ring 51 is in close contact with the rotating cylinder 11, so that the ballast 6 at the rotation gap 4 does not enter the interior of the cylinder driving element 2, and its structure is simple 3. Good sealing performance.

In this embodiment, there are a plurality of polyurethane sealing rings 51. A plurality of polyurethane sealing rings 51 are arranged along the axial direction of the rotating cylinder 11, and a plurality of polyurethane sealing rings 51 are provided to improve the sealing performance. When the ring 51 wears out, the remaining polyurethane sealing ring 51 can still continue to ensure sealing, and the sealing reliability is high. In this embodiment, there are multiple fixed flanges, and the multiple fixed flanges are provided between adjacent polyurethane sealing rings, which further ensures the effective installation and sealing of the polyurethane sealing rings.

In this embodiment, the driving member 23 is a driving motor, the driving member 23 is installed on the sealed box 3, the transmission bearing 21 and the output gear 22 are provided in the sealed box 3, so that the transmission bearing 21 and the output gear 22 are located in a sealed environment To ensure the driving reliability and safety of the cylinder drive element 2, at the same time, the inner ring of the transmission bearing 21 is fixedly installed on the sealing box 3 by fasteners, and its structure is simple. In this embodiment, the sealed box body 3 includes a sealed box body 32 and a box cover 33. The sealed box body 32 and the box cover 33 are detachably connected by fasteners, and the split design of the sealed box body 32 and the box cover 33 is convenient. Installation and removal of the body drive element 2.

In this embodiment, the shield machine includes a shield body and the shield screw conveyor described in the above embodiment, and the shield screw conveyor is provided in the shield body. The shield machine of the present invention also has the advantages of good running stability, high reliability, and small occupied space of the above-mentioned shield screw conveyor.

Although the present invention has been described with reference to the preferred embodiments, various improvements can be made and parts thereof can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the requested item.

1‧‧‧Screw conveyor 11‧‧‧Rotating cylinder 111‧‧‧Connecting part 12‧‧‧Screw shaft 13‧‧‧Slag outlet 2‧‧‧Cylinder drive assembly 21‧‧‧Drive bearing 22‧‧ ‧Output gear 23‧‧‧Driver 3‧‧‧Seal box 31‧‧‧Seal matching part 32‧‧‧Seal box body 33‧‧‧Cover lid 4‧‧‧Rotating gap 5‧‧‧Sealing assembly 51‧ ‧‧Urethane seal ring 52‧‧‧fixed flange 6‧‧‧salt soil

Hereinafter, the present invention will be described in more detail based on the embodiments and with reference to the drawings. among them:

Figure 1 is a schematic diagram of the present invention.

Fig. 2 is an enlarged schematic view of part A of Fig. 1.

The numbers in the figure indicate:

1. Screw conveyor; 11. Rotating cylinder; 111, connecting part; 12. Screw shaft; 13. Slag outlet; 2. Cylinder drive assembly; 21, transmission bearing; 22, output gear; 23, driving part; 3. Sealed box body; 31. Sealed matching part; 32. Sealed box body; 33. Box cover; 4. Rotating clearance; 5. Sealing assembly; 51. Polyurethane sealing ring; 52. Fixed flange; 6. Ballast soil.

1‧‧‧Screw conveyor

2‧‧‧Cylinder drive assembly

12‧‧‧Screw shaft

13‧‧‧slag outlet

23‧‧‧Drive parts

32‧‧‧Sealed box body

33‧‧‧Cover

Claims (8)

A shield screw conveyor, comprising: a rotating cylinder for discharging the cut-off soil and a cylinder driving element for driving the rotating cylinder to rotate, the cylinder driving element includes a transmission bearing, an output gear, and the drive A driving member for the output gear to rotate, the transmission bearing is sleeved on the rotating cylinder, and the outer ring of the transmission bearing is fixedly connected to the rotating cylinder, the output gear and the outer ring of the transmission bearing Meshing transmission; and a sealed box, the rotating cylinder is provided in the sealed box, and a rotating gap is provided between the rotating cylinder and the sealed box to ensure the relative rotation of the rotating cylinder, which It is characterized in that the sealing box is provided with a sealing and fitting part arranged along the axial direction of the rotating cylinder, a sealing element is provided between the sealing and fitting part and the rotating cylinder, and the sealing assembly includes a polyurethane seal A ring and a fixed flange, the polyurethane sealing ring is installed on the sealing and matching part through the fixing flange, and one end of the polyurethane sealing ring is in close contact with the rotating cylinder. The shield screw conveyor according to claim 1, wherein there are a plurality of polyurethane sealing rings, and the plurality of polyurethane sealing rings are arranged along the axial direction of the rotating cylinder. The shield screw conveyor according to claim 2, wherein there are multiple fixed flanges, and the multiple fixed flanges are provided between adjacent polyurethane sealing rings. The shield screw conveyor according to any one of claims 2 to 3, wherein the driving member is mounted on the sealed box, and the transmission bearing and the output gear are provided in the sealed box. The inner ring of the transmission bearing is fixedly installed on the sealing box. The shield screw conveyor according to claim 4, wherein the sealed box body includes a sealed box body and a box cover, and the sealed box body and the box cover are detachably connected by fasteners. The shield screw conveyor according to any one of claims 1 to 3, wherein the rotating cylinder is provided with a connection part connected to the outer ring of the transmission bearing. The shield screw conveyor according to claim 6, wherein the outer ring of the transmission bearing is connected to the connecting portion by a fastener. A shield machine includes a shield body, and further includes the shield screw conveyor according to any one of claims 1 to 7, wherein the shield screw conveyor is provided in the shield body.

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