CN206153625U - Rig and unit head thereof - Google Patents

Abstract

The utility model discloses an unit head, including box and drilling rod, wherein, the lower extreme of drilling rod passes through bearing position on the box, and the slewing bearing location is passed through on the box in the upper end of drilling rod. The lower extreme of drilling rod adopts bearing position, because the ratio of precision slewing bearing's of bearing precision is high, consequently, can improve the location accuracy of drilling rod, has reduced the problem of slope to prevent that the drilling rod from to the damage of sealing washer, having alleviated the problem of revealing. The utility model also discloses a rig of having above -mentioned unit head.

Description

A kind of rig and its unit head

Technical field

The utility model is related to rig technical field of tools, is to be related to a kind of rig and its unit head specifically.

Background technology

Unit head is to realize main motion and feed motion, and has the power part of automatic workpiece circulation, is that comparison is simple A single variable transmission mechanism, form is varied, and general principle is exactly that motor drives a gear shift, Ke Yishi The functions such as existing boring, milling, drilling, have with guide rail, can be with the linear motion of small range.

Oil leak in prior art is the higher phenomenon of unit head fault rate, oil leak main cause be when drilling rod is positioned, Lower end by pivoting support position, upper end by bearing position, on this location base, due to drilling rod bottom positioning it is inaccurate Afterwards, angle of inclination is bigger to upper end angle of inclination from lower end, if rig is after unbalance loading is run into, drilling rod easily run-off the straight therewith, and Drilling rod internal key is covered up and down contact place transmission extruding force indirect transfer give unit head for sealing rotary shaft lip Sealing ring, due to material problem, expendable destruction is caused to rotary shaft lip seal, so that permeability occurs in unit head Or even the phenomenon of oil leak.

Therefore, how a kind of unit head is provided, is that those skilled in the art need at present to ensure the accuracy that drilling rod is positioned The technical problem to be solved.

Utility model content

In view of this, the utility model provides a kind of unit head, to ensure the accuracy that drilling rod is positioned.The utility model Additionally provide a kind of rig with above-mentioned unit head.

For achieving the above object, the utility model provides following technical scheme：

A kind of unit head, including casing and drilling rod, wherein, the lower end of the drilling rod is positioned at the casing by bearing On, the upper end of the drilling rod is positioned on the casing by pivoting support.

Preferably, in above-mentioned unit head, the bearing and the pivoting support be set on the outside of the drilling rod Internal key set coordinates positioning.

Preferably, in above-mentioned unit head, the internal key set on the outside of the drilling rod is set in by sealing ring and casing It is tightly connected.

Preferably, in above-mentioned unit head, the sealing ring is lip-type packing.

Preferably, in above-mentioned unit head, also it is used for the drilling rod including being arranged between the drilling rod and damper The keeper of positioning.

Preferably, in above-mentioned unit head, the keeper is to be arranged on the spline inside the damper, the spline Fit with the drilling rod.

Preferably, in above-mentioned unit head, the spline is axially extending along the drilling rod.

A kind of rig, including unit head, wherein, the unit head is the unit head described in any of the above-described.

Understand via above-mentioned technical scheme, the utility model discloses a kind of unit head, including casing and drilling rod, its In, the lower end of drilling rod is positioned on casing by bearing, and the upper end of drilling rod is positioned on casing by pivoting support.Under drilling rod End is positioned using bearing, due to the high precision of the ratio of precision pivoting support of bearing, therefore, the Position location accuracy of drilling rod can be improved, Inclined problem is reduced, so as to prevent damage of the drilling rod to sealing ring, the problem of leakage is alleviated.

Description of the drawings

In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also Other accompanying drawings can be obtained according to the accompanying drawing for providing.

The partial structural diagram of the unit head that Fig. 1 is provided for the utility model embodiment；

The structural representation of the damper that Fig. 2 is provided for the utility model embodiment.

Specific embodiment

Core of the present utility model is to provide a kind of unit head, to ensure the accuracy that drilling rod is positioned.It is of the present utility model Another core there is provided a kind of rig with above-mentioned unit head.

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of the utility model protection.

As depicted in figs. 1 and 2, the utility model discloses a kind of unit head, including casing and drilling rod, wherein, drilling rod Lower end is positioned on casing by bearing 2, and the upper end of drilling rod is positioned on casing by pivoting support 1.The lower end of drilling rod adopts Bearing 2 is positioned, due to the high precision of the ratio of precision pivoting support 1 of bearing 2, therefore, the Position location accuracy of drilling rod can be improved, reduce Inclined problem, so as to prevent damage of the drilling rod to sealing ring, alleviates the problem of leakage.

Specifically, internal key set is arranged with the outside of drilling rod, above-mentioned bearing 2 and pivoting support 1 coordinates fixed with internal key set 3 Position, realizes the positioning to drilling rod.

In further embodiment, the internal key being set on the outside of drilling rod set 3 is connected by sealing ring with box sealing, if The effect for putting sealing ring is the sealing to casing, it is ensured that stablizing for the fluid of box house, prevents leakage.But in reality In border, because drilling rod there may be inclined problem, and sealing ring is caused to damage, therefore, it is higher to the location requirement of drilling rod.

Specifically, the sealing ring is lip-type packing 4, but is not limited in lip-type packing 4 in the application, also can be set It is set to the sealing ring of other forms.Lip-type packing 4 is generally used for outside framework oil seal, and it is close that this version is generally used for rotation Envelope.

In further embodiment, also including the positioning being arranged between drilling rod and damper 5 for positioning to drilling rod Part.The effect for increasing keeper is that drilling rod is further positioned, and prevents drilling rod from inclining.To solve to be made because drilling rod is inclined Into the phenomenon that the lip-type packing of unit head rotary shaft is damaged, the measure for lengthening internal key set and drilling rod contact length is taken, used With righting drilling rod, reduce its angle of inclination, the fault rate of the lip-type packing 4 of rotary shaft is reduced to greatest extent.

Specifically, the keeper is to be arranged on the spline 6 inside damper 5, and the spline 6 is fitted with drilling rod.Increase spline 6 Mode simple structure, it is easy to operate, and righting effect is good.

In order to further improve the locating effect of spline 6, spline 6 is set to along the axially extending of drilling rod in the application, To increase the contact area of spline 6 and drilling rod, the accuracy of positioning is improved.

In practice, the spline 6 and the contact surface of drilling rod may be configured as the arcwall face fitted with the outer surface of drilling rod, to enter One step improves locating effect.

Additionally, disclosed herein as well is a kind of rig, it includes unit head, and the unit head is such as public affairs in above-mentioned embodiment The unit head opened, therefore, the rig with the unit head also has above-mentioned all technique effects, and this is no longer going to repeat them.

Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other The difference of embodiment, between each embodiment identical similar portion mutually referring to.

The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality Type.Various modifications to these embodiments will be apparent for those skilled in the art, determine herein The General Principle of justice can in other embodiments be realized in the case of without departing from spirit or scope of the present utility model.Cause This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The most wide scope consistent with features of novelty.

Claims (8)

1. a kind of unit head, including casing and drilling rod, it is characterised in that the lower end of the drilling rod is positioned at institute by bearing (2) State on casing, the upper end of the drilling rod is positioned on the casing by pivoting support (1).

2. unit head according to claim 1, it is characterised in that the bearing (2) and the pivoting support (1) with set It is located at the internal key set (3) on the outside of the drilling rod and coordinates positioning.

3. unit head according to claim 2, it is characterised in that the internal key set (3) being set on the outside of the drilling rod It is connected with box sealing by sealing ring.

4. unit head according to claim 3, it is characterised in that the sealing ring is lip-type packing (4).

5. unit head according to claim 1, it is characterised in that also including be arranged on the drilling rod and damper (5) it Between for the drilling rod positioning keeper.

6. unit head according to claim 5, it is characterised in that the keeper is to be arranged in the damper (5) The spline (6) in portion, the spline (6) is fitted with the drilling rod.

7. unit head according to claim 6, it is characterised in that the spline (6) is along the axially extending of the drilling rod.

8. a kind of rig, including unit head, it is characterised in that the unit head is dynamic as described in any one of claim 1-7 Power head.