CN209977438U

CN209977438U - Large-scale non-excavation transfer case

Info

Publication number: CN209977438U
Application number: CN201920687007.3U
Authority: CN
Inventors: 许文红
Original assignee: Wuxi Caston Drilling Tool Co Ltd
Current assignee: Wuxi Caston Drilling Tool Co Ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-01-21
Anticipated expiration: 2029-05-14

Abstract

The utility model relates to a transfer case technical field, especially be a large-scale non-excavation transfer case, including axle, first apron, thrust cylinder roller bearing and barrel, the outside fixedly connected with bearing of axle right-hand member, the bearing outside fixedly connected with barrel, the bearing left side is equipped with thrust cylinder roller bearing, thrust cylinder roller bearing inboard and axle fixed connection, lie in left the thrust cylinder roller bearing left side is equipped with the bearing ring, the bearing ring inboard is equipped with oilless self-lubricating bearing, the bearing ring outside is equipped with the barrel, the bearing ring left side is equipped with the third apron; the utility model discloses in, through third apron, bearing ring and the barrel that sets up, under the improvement intensity prerequisite, simplify the structure, take pull head and barrel integration overall structure, reduce the processing technology requirement, simplify manufacturing procedure, adopt embedded end cover simultaneously, improve the reliability, the bearing optimizes the lectotype, adopts two thrust bearing structure, and the atress is more reasonable, guarantees transfer case life.

Description

Large-scale non-excavation transfer case

Technical Field

The utility model relates to a transfer case technical field specifically is a large-scale non-excavation transfer case.

Background

The non-development construction is that underground pipelines are laid, detected, maintained and updated under the condition of no excavation or less excavation of the earth surface, the transfer case is used for the back expansion and pipe dragging construction process of the non-excavation construction, the pipeline is guaranteed to be dragged to linearly and axially move without rotating when a main shaft of the drilling machine rotates, the main axial direction bears tension and does not bear torque, and once slurry enters the transfer case in the construction process, the transfer case runs under the working condition of slurry, a sealing surface is abraded, a bearing is clamped, the bearing is damaged, and the transfer case fails.

The existing trenchless transfer case generally adopts a structure form that a pull head and a cylinder body are split, and consists of the pull head, the cylinder body, a tapered roller thrust bearing, a self-aligning roller bearing, a main shaft, a cover plate, a framework oil seal and the like, and the existing product has the defects of more parts, complex assembly and large length-diameter ratio; the sealing position adopts a framework oil seal, and the sealing effect is poor; the bearing is a tapered roller thrust bearing, and the assembly precision is required to be high; the processing requirement of parts is high, and the processing is difficult; the maintenance is complex; the main shaft has poor positioning accuracy, so a large trenchless transfer case is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a large-scale non-excavation transfer case to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a large-scale non-excavation transfer case comprises a shaft, a first cover plate, a thrust cylindrical roller bearing and a cylinder body, wherein the bearing is fixedly connected to the outer side of the right end of the shaft, the cylinder body is fixedly connected to the outer side of the bearing, the thrust cylindrical roller bearing is arranged on the left side of the bearing, the inner side of the thrust cylindrical roller bearing on the left side is fixedly connected with the shaft, a bearing ring is arranged on the left side of the thrust cylindrical roller bearing, an oilless self-lubricating bearing is arranged on the inner side of the bearing ring, the cylinder body is arranged on the outer side of the bearing ring, a third cover plate is arranged on the left side of the bearing ring, cloth clamping is arranged on the inner side of the third cover plate, a limiting ring is arranged on the outer side of the third cover plate, the cylinder body is arranged on the outer side of the limiting ring, a second cover plate is arranged on the left, the hexagonal socket head cap screw outside screwed connection has first apron and the second apron that distributes about being, first apron right side is equipped with iron-clad skeleton oil blanket, iron-clad skeleton oil blanket inboard is equipped with the axle, is located the below first hexagon socket head cap screw below is equipped with the hexagon socket head cap screw in the second, hexagon socket head cap screw outside screwed connection has third apron and the barrel that distributes about being.

Preferably, the number of the first inner hexagonal bolts is two, the first inner hexagonal bolts are symmetrically arranged up and down about the shaft center, the outer side of the first inner hexagonal bolt is spirally connected with a second cover plate, an adjusting gasket and a third cover plate which are sequentially distributed from left to right, and the outer side of the third cover plate is provided with uniformly distributed circular grooves.

Preferably, the cross section of the cloth clamping is arranged in a V shape, and a shaft is arranged on the inner side of the cloth clamping.

Preferably, a cylinder is arranged on the outer side of the cylindrical thrust roller bearing, and the cylindrical thrust roller bearing is arranged in a left-right symmetrical mode with respect to the shaft.

Preferably, the upper end face of the oil-free self-lubricating bearing is provided with an inner hexagonal fastening screw, and the upper end face of the inner hexagonal fastening screw is provided with a bearing ring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, through the third cover plate, the spacing ring, the bearing ring and the barrel, the structure is simplified on the premise of improving the strength, the integral structure of the pull head and the barrel is adopted, the processing technology requirement is reduced, the processing procedure is simplified, and meanwhile, the embedded end cover is adopted, so that the reliability is improved; the bearing is optimized and selected, a double-thrust bearing structure is adopted, the stress is more reasonable, and the service life of the transfer case is ensured;

2. the utility model discloses in, through iron-clad skeleton oil blanket, circular slot, the double-layered cloth that sets up, interior hexagonal fastening screw and do not have oily self-lubricating bearing, current product generally adopts the skeleton to seal, the utility model discloses select for use V type to press from both sides cloth sealed, sealed area is the triple of current product, more is fit for the sealing among the mud operational environment, selects for use to press from both sides cloth sealed combination formula of formation sealed effect that can effectively improve the transfer case, adopts adjustable seal can improve life extension maintenance interval.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of a portion a of fig. 1 according to the present invention.

In the figure: the bearing comprises a shaft 1, a first cover plate 2, a second cover plate 3, an adjusting gasket 4, a third cover plate 5, a limiting ring 6, a bearing ring 7, a cylinder body 8, a cylindrical roller thrust bearing 9, a bearing 10, an inner hexagonal countersunk head screw 11, a first inner hexagonal bolt 12, an iron shell framework oil seal 13, a second inner hexagonal bolt 14, a circular groove 15, cloth clamping 16, an inner hexagonal fastening screw 17 and an oil-free self-lubricating bearing 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

a large-scale trenchless transfer case comprises a shaft 1, a first cover plate 2, a thrust cylindrical roller bearing 9 and a cylinder body 8, wherein a bearing 10 is fixedly connected to the outer side of the right end of the shaft 1, the cylinder body 8 is fixedly connected to the outer side of the bearing 10, a puller and the cylinder body 8 are integrally forged to improve the reliability of a product and reduce the processing difficulty, the thrust cylindrical roller bearing 9 is arranged on the left side of the bearing 10, the inner side of the thrust cylindrical roller bearing 9 is fixedly connected with the shaft 1, the structure of the existing product is simplified by the tensile force borne by the thrust cylindrical roller bearing 9, a bearing ring 7 and a limiting ring 6, the integral strength is higher, the bearing ring 7 is arranged on the left side of the thrust cylindrical roller bearing 9, an oilless self-lubricating bearing 18 is arranged on the inner side of the bearing ring 7, the thrust cylindrical roller bearing 9 and the oilless self, the assembly precision requirement is reduced, the outer side of the bearing ring 7 is provided with a cylinder body 8, the left side of the bearing ring 7 is provided with a third cover plate 5, the inner side of the third cover plate 5 is provided with a cloth clamp 16, the outer side of the third cover plate 5 is provided with a spacing ring 6, a cylinder body 8 is arranged on the outer side of the limit ring 6, a second cover plate 3 is arranged on the left side of the third cover plate 5, a first inner hexagon bolt 12 is arranged at the left side of the second cover plate 3, an inner hexagon countersunk head screw 11 is arranged above the first inner hexagon bolt 12 positioned at the lower part, the outer side of the inner hexagonal countersunk head screw 11 is spirally connected with a first cover plate 2 and a second cover plate 3 which are distributed left and right, an iron shell framework oil seal 13 is arranged on the right side of the first cover plate 2, a shaft 1 is arranged on the inner side of the iron shell framework oil seal 13, a second hexagon socket head cap screw 14 is arranged below the first hexagon socket head cap screw 12 positioned below the shaft 1, and the outer side of the second inner hexagon bolt 14 is spirally connected with a third cover plate 5 and a barrel 8 which are distributed leftwards and rightwards.

The number of the first inner hexagonal bolts 12 is two, the first inner hexagonal bolts 12 are arranged in an up-down symmetrical manner about the center of the shaft 1, the outer side of the first inner hexagonal bolt 12 is spirally connected with the second cover plate 3, the adjusting gasket 4 and the third cover plate 5 which are sequentially distributed from left to right, the outer side of the third cover plate 15 is provided with circular grooves 15 which are uniformly distributed, the section of the clamping cloth 16 is arranged in a V shape, the shaft 1 is arranged on the inner side of the clamping cloth 16, the outer side of the thrust cylindrical roller bearing 9 is provided with the barrel 8, the V-shaped clamping cloth 16 is selected for sealing, the sealing area is three times of that of the existing product, the thrust cylindrical roller bearing 9 is arranged in a left-right symmetrical manner about the shaft 1, the fault-tolerant rate of the thrust cylindrical roller bearing 9 is higher, the upper end face of the oilless self-lubricating bearing 18 is provided with an inner hexagonal fastening screw 17, the upper end face, this arrangement has a load bearing purpose, extending the life of the device.

The working process is as follows: the utility model adopts the integral forging of the pull head and the barrel body 8 to improve the reliability of the product and reduce the processing difficulty, the shaft 1 adopts the bearings 10 at two ends to position and improve the concentricity in use, the thrust cylindrical roller bearing 9, the bearing ring 7 and the spacing ring 6 bear the pulling force to simplify the structure of the prior product, simultaneously the integral strength is higher, the prior product bearing 10 adopts the thrust tapered roller bearing, the utility model adopts the thrust cylindrical roller bearing 9, the distance between the second cover plate 3 and the third cover plate 5 can be adjusted by the arrangement of the adjusting gasket 4 to ensure the normal use of the device, the fault tolerance of the thrust cylindrical roller bearing 9 selected and used in the utility model is higher, the prior product generally adopts the framework sealing, the utility model adopts the V-shaped cloth clamping 16 to seal, the sealing area is three times of the prior product, and the sealing in the slurry working environment is more suitable, this kind of setting up the solid forging barrel 8, the structure is compacter, and bulk strength is higher, has chooseed thrust cylindrical roller bearing 9 and has had no oily self-lubricating bearing 18 for use, and the assembly need not the pretension, has reduced the assembly required precision, chooses for use the V type that more is fit for the mud environment operation to press from both sides cloth 16 sealed, adopts adjustable design, has fine practical value.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a large-scale non-excavation transfer case, includes axle (1), first apron (2), thrust cylindrical roller bearing (9) and barrel (8), its characterized in that: the bearing (10) is fixedly connected to the outer side of the right end of the shaft (1), the cylinder body (8) is fixedly connected to the outer side of the bearing (10), the cylindrical roller thrust bearing (9) is arranged on the left side of the bearing (10), the cylindrical roller thrust bearing (9) is fixedly connected to the inner side of the shaft (1), the cylindrical roller thrust bearing (9) is arranged on the left side of the bearing and is provided with a bearing ring (7), the inner side of the bearing ring (7) is provided with an oilless self-lubricating bearing (18), the outer side of the bearing ring (7) is provided with the cylinder body (8), the left side of the bearing ring (7) is provided with a third cover plate (5), the inner side of the third cover plate (5) is provided with a clamping cloth (16), the outer side of the third cover plate (5) is provided with a spacing ring (6), the outer side of the spacing ring (6), second apron (3) left side is equipped with first hexagon socket head cap screw (12), is located the below first hexagon socket head cap screw (12) top is equipped with hexagon socket head cap screw (11), hexagon socket head cap screw (11) outside screwed connection has first apron (2) and second apron (3) that distribute about being, first apron (2) right side is equipped with iron-clad skeleton oil blanket (13), iron-clad skeleton oil blanket (13) inboard is equipped with axle (1), is located the below first hexagon socket head cap screw (12) below is equipped with second hexagon socket head cap screw (14), hexagon socket head cap screw (14) outside screwed connection has third apron (5) and barrel (8) that distribute about being.

2. A large trenchless transfer case as claimed in claim 1 wherein: first hexagon socket head cap screw (12) quantity is two, and first hexagon socket head cap screw (12) about axle (1) center be symmetry setting from top to bottom, first hexagon socket head cap screw (12) outside screwed connection has from left to right distributed in proper order second apron (3), adjusting shim (4) and third apron (5), evenly distributed's circular slot (15) are seted up in the third apron (5) outside.

3. A large trenchless transfer case as claimed in claim 1 wherein: the cross section of the cloth clamping (16) is arranged in a V shape, and a shaft (1) is arranged on the inner side of the cloth clamping (16).

4. A large trenchless transfer case as claimed in claim 1 wherein: the outer side of the thrust cylindrical roller bearing (9) is provided with a cylinder body (8), and the thrust cylindrical roller bearing (9) is arranged in a left-right symmetrical mode relative to the shaft (1).

5. A large trenchless transfer case as claimed in claim 1 wherein: the oil-free self-lubricating bearing is characterized in that an inner hexagonal fastening screw (17) is arranged on the upper end face of the oil-free self-lubricating bearing (18), and a bearing ring (7) is arranged on the upper end face of the inner hexagonal fastening screw (17).