CN202531835U

CN202531835U - Bit shank sealing device for hydraulic rock drilling machine

Info

Publication number: CN202531835U
Application number: CN201120571337XU
Authority: CN
Inventors: 夏学良; 谢加权; 张南雨; 冯德渝; 高峰
Original assignee: CSIC Zhongnan Equipment Co Ltd
Current assignee: CSIC Zhongnan Equipment Co Ltd
Priority date: 2011-12-30
Filing date: 2011-12-30
Publication date: 2012-11-14
Anticipated expiration: 2021-12-30

Abstract

The utility model provides a bit shank sealing device for a hydraulic rock drilling machine, and belongs to the technical field of hydraulic rock drilling. A rotary gland is adopted at the washing head in the machine head of the hydraulic rock drilling machine; the rotary gland consists of a sealing ring and an O-shaped ring; parallel rectangular slots of which the cross sections are rectangular are machined in the mounting surfaces of sealing ring of the rotary gland and the bit shank; the mounting surfaces of the sealing ring and the O-shaped sealing ring are in concave shape; the sealing ring can meet the requirement on linear reciprocating movement, is suitable for rotating movement, and can completely meet the requirement on the working conditions of the bit shank; the service life of a sealing piece is further prolonged; and simultaneously, the sealing ring has double functions, the internal fluid can be prevented from leaking outward and external impurities can be prevented from entering the rock drilling machine, so that the reliability of the hydraulic rock drilling machine is high, the repair cycle is prolonged, the using cost is reduced and the utilization rate and the work efficiency of equipment are improved.

Description

A kind of bit shank seal arrangement of hydraulic gate

Technical field

The utility model relates to a kind of bit shank seal arrangement, relates in particular to the bit shank sealing configuration of hydraulic gate, belongs to the hydraulic rock technical field.

Background technique

The hydraulic gate of existing technology adopts the U-shaped seal ring to seal between bit shank and syringe pipe, says that from sealing mechanism the U-shaped seal ring is applicable to linear reciprocating motion, and it is then improper to be used to rotatablely move.And bit shank is to make a kind of past complex line and rotatablely moving compound spiral motion when work, be used under this operating mode so the U-shaped seal ring is suitable, so its life-span is shorter, needs often to change, and this has just reduced the working efficiency of hydraulic gate.

Summary of the invention

The utility model provides a kind of bit shank seal arrangement of hydraulic gate, can improve the sealing means between bit shank and the syringe pipe and prolong seal durability, improves capacity utilization and working efficiency.

A kind of bit shank seal arrangement of hydraulic gate comprises that bit shank, head copper sheathing, head, rotation lattice enclose, O-ring seals and syringe pipe; Wherein rotate lattice and enclose by a seal ring and O shape circle and forms, it is rectangle and rectangle groove arranged side by side that the attachment face that rotates seal ring that lattice enclose and bit shank is processed with cross section, and the attachment face of seal ring and O-ring seals is a concave shape; Be sleeved on the inner rear end of head after O-ring seals is installed in the seal groove of syringe pipe cylindrical, the rotation lattice be installed in the seal groove of syringe pipe inwall enclosed, the O shape circle that the rotation lattice enclose is installed in the seal groove bottom, and seal ring set is contained on the O shape circle; The head copper sheathing is sleeved on the inner front end of head, and bit shank passes in the passage of head copper sheathing and syringe pipe formation.

Working principle: combine as the O shape circle of elastic force-applying element because the rotation lattice enclose by a seal ring and one, and it is double-acting, can be exposed under the pressure with one-sided or bilateral; Seal ring forms arc shaped surface with the attachment face of O shape circle and cooperates; The profile that can adapt to O shape circle; Increased seal ring and O shape circle area of contact; The rectangle groove of seal ring can improve the induced pressure and the sealing effect of unit sealing surface, and oil groove is provided simultaneously, prevents that effectively syringe pipe is along with the surface of revolution of bit shank rotates together; Used seal ring material therefor causes with this special front cover that is specifically designed to the linear reciprocation sealing simultaneously, is the PTFE material.

Beneficial effect: the seal arrangement of the utility model can be applicable to that the requirement of straight reciprocating motion can be applicable to again and rotatablely move that meet the requirement of bit shank motion operating mode fully, suitable Sealing is used for suitable operating mode, and this has just prolonged the working life of Sealing.Therefore it is long to the utlity model has the repair cycle, and user cost is low, characteristics such as capacity utilization and working efficiency height.

Description of drawings

Fig. 1 is the cross-sectional view of the utility model:

Fig. 2 is an I place partial enlarged drawing in the utility model cross-section structure.

Wherein: 1-bit shank, 2-head copper sheathing, 3-head, 4-rotation lattice enclose, 5-O shape seal ring, 6-syringe pipe.

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified

Shown in accompanying drawing 1, the bit shank seal arrangement of the hydraulic gate of the utility model comprises that bit shank 1, head copper sheathing 2, head 3, rotation lattice enclose 4, O-ring seals 5 and syringe pipe 6; Wherein rotate lattice and enclose 4 and is made up of a seal ring and O shape circle, rotating attachment face that lattice enclose 4 seal ring and bit shank, to be processed with the twice cross section be rectangle and rectangle groove arranged side by side, and the attachment face of seal ring and O-ring seals is a concave shape; Install in the seal groove of syringe pipe 6 cylindricals and be sleeved on the inner rear end of head 3 behind the O-ring seals 5, the rotation lattice are installed in the seal groove of syringe pipe 6 inwalls are enclosed 4, the rotation lattice enclose 4 O shape circle and are installed in the seal groove bottom, and seal ring set is contained on the O shape circle; Head copper sheathing 2 is sleeved on the front end of head 3 inside, and bit shank 1 passes in the passage that head copper sheathing 2 and syringe pipe 6 constitute.

Working principle: combine as the O shape circle of elastic force-applying element by a seal ring and one because the rotation lattice enclose 4, and it is double-acting, can be exposed under the pressure with one-sided or bilateral; Seal ring forms arc shaped surface with the attachment face of O shape circle and cooperates; The profile that can adapt to O shape circle; Increased seal ring and O shape circle area of contact; The rectangle groove of seal ring can improve the induced pressure and the sealing effect of unit sealing surface, and oil groove is provided simultaneously, prevents that effectively syringe pipe 6 is along with the surface of revolution of bit shank 1 rotates together.

Claims

1. the bit shank seal arrangement of a hydraulic gate comprises that bit shank (1), head copper sheathing (2), head (3), rotation lattice enclose (4), O-ring seals (5) and syringe pipe (6); After being installed in the seal groove of syringe pipe (6) cylindrical, O-ring seals (5) is sleeved on the inner rear end of head (3); The interior rotation lattice of installing of seal groove that it is characterized in that said syringe pipe (6) inwall enclose (4); Head copper sheathing (2) is sleeved on the inner front end of head (3), and bit shank (1) passes in the passage of head copper sheathing (2) and syringe pipe (6) formation.

2. the bit shank seal arrangement of a kind of hydraulic gate as claimed in claim 1; It is characterized in that said rotation lattice enclose (4) and are made up of a seal ring and an O shape circle; It is rectangle and rectangle groove arranged side by side that the attachment face that the rotation lattice enclose seal ring and the bit shank (1) of (4) is processed with cross section, and the attachment face of seal ring and O-ring seals is a concave shape.

3. according to claim 1 or claim 2 a kind of bit shank seal arrangement of hydraulic gate is characterized in that O shape circle that said rotation lattice enclose (4) is installed in the seal groove bottom of syringe pipe (6) inwall, and seal ring set is contained on the O shape circle.