CN2280154Y

CN2280154Y - Main shaft sealing device of built-in type in drilling machine

Info

Publication number: CN2280154Y
Application number: CN 96243376
Authority: CN
Inventors: 周忠清
Original assignee: ZHANGJIAGANG CITY DRILLING MACHINER FACTORY
Current assignee: ZHANGJIAGANG CITY DRILLING MACHINER FACTORY
Priority date: 1996-12-12
Filing date: 1996-12-12
Publication date: 1998-04-29
Anticipated expiration: 2006-12-12

Abstract

The utility model relates to the technical improvement of a sealing device of a main shaft of a drilling machine. The sealing device of a built-in type main shaft of the drilling machine of the utility model comprises a stationary ring, a stationary ring seat, a pair of friction pairs which are respectively fixed on the stationary ring and a movable ring, the movable ring, a spring, a spring seat and a seal box, wherein the stationary ring seat, the friction pairs which are respectively fixed on the stationary ring and the movable ring, the movable ring, the spring and the spring seat are all arranged in the seal box. When the sealing device of the main shaft of the drilling machine is used, foreign matters are not easy to enter the spring seat through the seal box to cause the spring to be out of action. Therefore, the sealing effect of the drilling machine is enhanced, the work efficiency of the drilling machine is ensured and the service life of the drilling machine is extended.

Description

Rig built-in type main shaft sealing device

The utility model relates to a kind of technological improvement of rig main shaft sealing device.

Rig is applicable at mud, clay, layer of sand, weathered shale and the stratum such as argillic horizon of containing a small amount of gravel and creeps into, and is widely used in engineering departments such as urban architecture, water conservancy, harbour, traffic, bridge, is the main construction machinery of boring Foundation Design.Former rig sealing of spindles adopts the external seal device, sealing apparatus structure complexity, and the stationary ring in the sealing device, stationary seat, a pair of friction pair, rotating ring, spring and the spring base that are separately fixed on stationary ring and the rotating ring all are exposed when work, foreign matter enters spring base easily, make spring ineffective, thereby influence the rig operating efficiency, shorten the application life of rig.

The purpose of this utility model designs a kind of improved rig built-in type main shaft sealing device, and it can improve rig sealing of spindles effect, guarantees the operating efficiency of rig, prolongs the application life of rig.

The technical solution of the utility model, a kind of rig built-in type main shaft sealing device, comprise stationary ring, stationary seat, be separately fixed at a pair of friction pair, rotating ring, spring and spring base on stationary ring and the rotating ring, it is characterized in that: to the periphery between the spring base one stuffing box is set at stationary seat, stationary ring, stationary seat, a pair of friction pair, rotating ring, spring and the spring base that are separately fixed on stationary ring and the rotating ring all are installed in the sealing case.

The utility model has the advantages that: 1, simple in structure, easy for installation; 2, owing to be provided with stuffing box at stationary seat to the periphery between the spring base, foreign matter is not easy to enter spring base by stuffing box, influences the performance of spring, thereby improves the operating efficiency of rig, prolongs the application life of rig.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model rig built-in type main shaft sealing device.

As seen from the figure, the utility model comprises stationary seat 1, stationary ring 2, rotating ring 3, is separately fixed at a pair of friction pair 4, throw-out collar 5, spring 6, spring base 7 and stuffing box 8 on stationary ring 2 and the rotating ring 3.Stationary ring 2 is installed on the stationary seat 1, stationary seat 2 is fixed on the adpting flange 9 that is connected on the main shaft 10, friction pair 4 closely contacts by the effect of spring 6 and throw-out collar 5, rotating ring 3 is connected with throw-out collar 5, throw-out collar 5 is connected with spring 6, and spring 6 is installed in the spring base 7, and stuffing box 8 is installed in stationary seat 1 to the periphery between the spring base 7, one end is fixed on the adpting flange 9, and the other end is socketed between main shaft 10 and the flange 11 on the lining 12.For improving the reliability of sealing device sealing, between stuffing box 8 and adpting flange 9, between stationary seat 1 and the adpting flange 9, between stationary seat 1 and the stationary ring 2, between stuffing box 8 and the lining 12, all be provided with sealing ring between lining 12 and the main shaft 10.Use after such sealing device, foreign matter enters in the spring base 7 by stuffing box 8 with regard to being not easy, and makes spring 6 ineffective, thereby has improved the operating efficiency of rig, has prolonged the application life of rig.

Claims

1, a kind of rig built-in type main shaft sealing device, comprise stationary ring, stationary seat, be separately fixed at a pair of friction pair, rotating ring, spring and spring base on stationary ring and the rotating ring, it is characterized in that: to the periphery between the spring base one stuffing box is set at stationary seat, stationary ring, stationary seat, a pair of friction pair, rotating ring, spring and the spring base that are separately fixed on stationary ring and the rotating ring all are installed in the sealing case.