CN218433276U

CN218433276U - Screw conveyer driving sealing device for push bench

Info

Publication number: CN218433276U
Application number: CN202222540705.5U
Authority: CN
Inventors: 王世田; 吕伟祥; 徐小雪; 孙桂荣; 王智勇; 张期奇; 张富祯
Original assignee: Xuzhou XCMG Foundation Construction Machinery Co Ltd
Current assignee: Xuzhou XCMG Foundation Construction Machinery Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-02-03
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses a pipe push bench screw conveyer drives sealing device, including reduction box, drive assembly, drive a section of thick bamboo, seal receptacle, box seal, barrel seal, drive assembly installs in the reduction box, drives a drive section of thick bamboo and rotates. Two ends of the driving cylinder and the reduction box body are axially provided with box body seals, two ends of the reduction box body are provided with sealing seats, and the cylinder body is hermetically arranged in a sealing groove of the sealing seat. The middle part of the sealing seat is provided with a ring groove, and a plurality of hollow holes are formed in the circumferential direction of the ring groove and used for separating the box body seal from the barrel body seal. The outer end faces of two ends of the sealing seat are respectively connected with the front barrel and the rear barrel of the conveyor through flanges, and a combined labyrinth sealing structure is constructed in the space gaps among the driving barrel, the sealing seat and the barrel of the screw conveyor. The utility model discloses a beneficial effect who brings: even if the cylinder body seal fails due to abrasion or overlarge soil pressure, overflowing muddy water flows out of the hollow hole, and the reduction gearbox seal is not damaged, so that the normal operation of the reduction gearbox is ensured.

Description

Screw conveyer driving sealing device for push bench

Technical Field

The utility model belongs to the technical field of the push pipe construction technique and specifically relates to a push pipe machine screw conveyer drives sealing device is related to.

Background

When the earth pressure balance push bench is used for underground push operation, the soil body cut by the cutter head enters the sealed soil bin and is extruded to form a compressed soil body with certain earth pressure, and the earth pressure and the water pressure are kept balanced by adjusting the earth output of the screw conveyor, so that the stability of an excavation surface is ensured, and the ground is prevented from settling or rising.

The existing screw conveyor driving sealing structure is usually designed into a pillow block with a certain length and is provided with a plurality of sealing combinations. Screw conveyer's gear box device separates for multichannel sealed usually with earth, and earth pressure balance push bench work needs the pressurize, when carrying out the material transport, be full of closely knit dregs in the screw conveyer barrel, the sealed back that damages of barrel, take the area muddy water can gush to the reducing gear box is sealed, because screw conveyer long time operation, sealed also wearing and tearing easily, lax, muddy water is more crowded into the gear box body easily, and is difficult for observing moreover, causes sealed inefficacy, and then damages actuating mechanism and bearing, causes the shut down. Meanwhile, the driving mechanism has high replacement cost, the internal space of the push bench is short, and the maintenance difficulty is high.

Disclosure of Invention

To the above-mentioned problem that exists now, the utility model aims at providing a screw conveyer drive sealing device for push bench builds the sealed device that separates of screw conveyer barrel promptly and drive to set up the fretwork hole, even the barrel is sealed to arouse inefficacy because of wearing and tearing or soil pressure is too big, the muddy water of overflow flows from the fretwork hole, thereby guarantees the sealed normal work of reducing gear box drive, effectively reduces and shuts down the maintenance risk, extension screw conveyer life.

In order to achieve the purpose, the utility model discloses a spiral conveyer driving and sealing device for a push bench, which comprises a reduction box body, a transmission assembly, a driving cylinder, a sealing seat, a box body seal and a cylinder body seal; the transmission assembly is arranged in the reduction box body and is connected with the driving cylinder; the sealing seats are arranged at two ends of the reduction box body, and a cylinder body seal is arranged in the sealing seats; and the box body seal is arranged in a gap between the driving cylinder and the two ends of the reduction box body in the axial direction.

Furthermore, the transmission assembly mainly comprises a gear shaft, a first bearing, a second bearing and a slewing bearing, wherein the gear shaft is arranged in a groove position in the reduction box body, two ends of the gear shaft are supported by the bearings and the bearings 23, and an inner ring of the slewing bearing is fixed on a mounting seat of the reduction box body.

Furthermore, a gear shaft and a slewing bearing of the transmission assembly form external meshing transmission.

Furthermore, the driving cylinder is fixed on the outer ring of the slewing bearing and is connected with the shaft sleeve of the screw shaft of the conveyor.

Furthermore, a mud guard ring is fixed on the ring surface of the middle part of the driving cylinder through a screw.

Furthermore, a sealing groove and a lubricating oil way are arranged in the sealing seat, and the cylinder body is hermetically arranged in the sealing groove.

Furthermore, the middle part of the sealing seat is provided with a ring groove, and a plurality of hollow holes are formed in the circumferential direction of the ring groove.

Furthermore, the end faces of the outer sides of the two ends of the sealing seat are respectively connected with the front barrel body and the rear barrel body of the conveyor through flange bolts, the driving barrel, the sealing seat and the screw conveyor barrel body rotate relatively, and a combined labyrinth sealing structure is constructed in the space gap of the driving barrel, the sealing seat and the screw conveyor barrel body.

Compared with the prior art, the screw conveyor driving sealing device for the push bench is used for separating the cylinder seal of the screw conveyor from the driving seal and is provided with the hollowed-out hole, so that overflow muddy water flows out of the hollowed-out hole even if the cylinder seal fails due to abrasion or overlarge soil pressure, the seal of the reduction gearbox is not damaged, and the normal operation of the driving reduction gearbox is ensured. Meanwhile, the operation conditions of the cylinder body and the driving seal can be observed through the hollow hole, whether the cylinder body is invalid or not is judged in advance, and the reduction gearbox is not disassembled when the sealing is replaced.

Drawings

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

FIG. 2 is a partially enlarged view showing the design intent;

in the figure: 1. reduction box body, 2, transmission assembly, 3, driving barrel, 4, sealing seat, 5, box body seal, 6, barrel body seal, 21, gear shaft, 22, bearing I, 23, bearing II, 24, slewing bearing, 41 and mud guard ring

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 2, a driving and sealing device of a screw conveyor for a push bench comprises a reduction box body 1, a transmission assembly 2, a driving cylinder 3, a sealing seat 4, a box body seal 5 and a cylinder body seal 6. The transmission component 2 is arranged in the reduction box body 1 and connected with the driving cylinder 3, and the driving cylinder 3 is driven to rotate under the driving of the motor, so that the driving cylinder 3 further drives the screw shaft to rotate. The seal receptacle 4 sets up at reduction box 1 both ends, and the sealed 6 installations of barrel are in the seal receptacle 4, form the sealed protection in the outside to reduction box 1. The box body seal 5 is arranged in the clearance between the driving cylinder 3 and the two ends of the reduction box body 1 in the axial direction to prevent oil leakage and external dust from entering.

In this embodiment, the transmission assembly 2 mainly comprises a gear shaft 21, a first bearing 22, a second bearing 23, and a pivoting support 24, and is disposed inside the reduction box 1. The gear shaft 21 is installed in a groove position in the reduction gearbox body 1, two ends of the gear shaft are supported by the first bearing 22 and the second bearing 23, the inner ring of the slewing bearing 24 is fixed on the installation seat of the reduction gearbox body 1, the gear shaft 21 and the slewing bearing 24 of the transmission assembly 2 form external meshing transmission, and the gear shaft 21 drives the slewing bearing 24 to rotate.

In this embodiment, the drive cylinder 3 is fixed to the outer ring of the slewing bearing 24, and the gear shaft 21 and the slewing bearing 24 form a meshing transmission. The driving cylinder 3 is connected with a shaft sleeve of a screw shaft of the conveyor, so that the driving cylinder is driven to rotate by a slewing bearing 24 to drive the screw shaft to rotate to convey materials.

In this embodiment, a mud guard 41 is fixed on the middle ring surface of the driving cylinder 3 through a screw, and a box seal 5 is arranged in a gap formed between the driving cylinder 3 and the two ends of the reduction box 1 in the axial direction, so as to prevent oil leakage and external dust from entering.

In this embodiment, the seal holders 4 provided at both ends of the reduction gear case 1 are fixed to the left and right end faces of the reduction gear case 1 by bolts, a seal groove and a lubricating oil passage are designed inside the seal holder 4, and the cylinder seal 6 is installed in the seal groove. The middle part of the sealing seat 4 is provided with a ring groove which is used for separating the box body seal 5 from the cylinder body seal 6, and a plurality of hollow holes are formed in the circumferential direction of the ring groove.

In this embodiment, the end faces of the outer sides of the two ends of the sealing seat 4 are respectively connected with the flanges of the front and rear cylinder bodies of the conveyor through bolts, the driving cylinder 3, the sealing seat 4 and the cylinder body of the screw conveyor can rotate relatively, and a combined labyrinth type sealing structure is constructed in the space gap.

In the embodiment, the driving force is transmitted to the driving barrel 3 for rotation through the gear transmission assembly 2, the driving barrel further drives the spiral shaft to rotate, the muck in the barrel body moves towards the tail part under the driving of the spiral blades, and muddy water in the barrel can firstly pass through the combined labyrinth seal after being extruded and then is blocked by the barrel body seal 6. Along with the long-time operation of screw conveyer, the barrel seals 6 are inefficacy because of wearing and tearing, lax or lubricating ability reduction, and the muddy water of overflow will flow out through the fretwork hole that the seal receptacle 4 was seted up, and the mud ring 41 that keeps off that box seals 5, barrel seals 6 middle part set up can effectively avoid muddy water to extrude into box seals 5. Even if the cylinder body seal 6 fails, the driving reduction box can still normally operate, so that the service life of the screw conveyor is prolonged.

In this embodiment, see through the fretwork hole on the seal receptacle 4, be convenient for observe the behavior of sealing member, if the sealed 5 oil permeability that appears of reduction box, or whether the sealed 6 infiltration of barrel, whether carry out the prejudgement and shut down the maintenance.

In the embodiment, the driving sealing device is provided, when the sealing element is replaced, the reduction box body is not required to be disassembled, only the sealing seat 4 and the fixing bolts of the reduction box body 1 and the barrel body of the screw conveyor are required to be removed, the screw shaft is withdrawn from the shaft sleeve of the driving barrel, the driving sealing device is removed, and the sealing which needs to be replaced can be conveniently removed.

Claims

1. The utility model provides a push bench screw conveyer drive sealing device which characterized in that: comprises a reduction box body (1), a transmission assembly (2), a driving cylinder (3), a sealing seat (4), a box body seal (5) and a cylinder body seal (6); the transmission assembly (2) is arranged in the reduction box body (1) and is connected with the driving cylinder (3); the sealing seats (4) are arranged at two ends of the reduction box body (1), and a cylinder body seal (6) is arranged in the reduction box body; and the box body seal (5) is arranged in a gap between the driving cylinder (3) and the reduction box body (1) in the axial direction.

2. The screw conveyor driving sealing device for the push bench of claim 1, wherein: the transmission assembly (2) mainly comprises a gear shaft (21), a first bearing (22), a second bearing (23) and a slewing bearing (24), the gear shaft (21) is installed in a groove inside the reduction box body (1), two ends of the gear shaft are supported by the first bearing (22) and the second bearing (23), and an inner ring of the slewing bearing (24) is fixed on a mounting seat of the reduction box body (1).

3. The screw conveyor driving sealing device for push bench of claim 2, wherein: the gear shaft (21) and the slewing bearing (24) of the transmission assembly (2) form external meshing transmission.

4. The screw conveyor driving sealing device for the push bench of claim 2, wherein: the driving cylinder (3) is meshed with the slewing bearing (24) and is connected with a shaft sleeve of a screw shaft of the conveyor.

5. The screw conveyor driving sealing device for push bench of claim 1, wherein: and a mud guard ring (41) is fixed on the middle annular surface of the driving cylinder (3) through a screw.

6. The screw conveyor driving sealing device for the push bench of claim 1, wherein: the sealing seat (4) is internally provided with a sealing groove and a lubricating oil way, and the cylinder body seal (6) is arranged in the sealing groove.

7. The screw conveyor driving sealing device for the push bench of claim 1, wherein: an annular groove is formed in the middle of the sealing seat (4), and a plurality of hollow holes are formed in the circumferential direction of the annular groove.

8. The screw conveyor driving sealing device for push bench of claim 1, wherein: the end faces of the outer sides of the two ends of the sealing seat (4) are respectively connected with the front barrel body and the rear barrel body of the conveyor through bolts, the driving barrel (3), the sealing seat (4) and the barrel body of the spiral conveyor rotate relatively, and a combined labyrinth type sealing structure is constructed in the space gap of the driving barrel (3).