CN1090234A

CN1090234A - Be used to tighten the gripping mechanism of breaker

Info

Publication number: CN1090234A
Application number: CN93117644A
Authority: CN
Inventors: 乔治·亨利·韦布
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-31
Filing date: 1993-07-31
Publication date: 1994-08-03
Also published as: WO1994003707A1; AU4718993A; GB9216355D0; ZA935472B

Abstract

Gripping mechanism 1 in a kind of hole that breaker is clamped on massive material when broken massive material comprises a housing 2, and this housing 2 is holding clamping element and wedges 14 such as skewback 5 and solid bit 6.Gripping mechanism is connected on the breaker by screwed pipe 4, and after pipe 4 was screwed into breaker fully, it also was used for promoting the wedge 14 in the housing 2.Wedge 14 promotes skewback 5 and drill bit 6, they is contacted, so that gripping mechanism and breaker are clamped in the massive material with massive material.In addition, can also be provided with an element be used for when housing 2 be not the cross force equalization that makes when being positioned at the center in hole of massive material on the skewback.

Description

Be used to tighten the gripping mechanism of breaker

The present invention relates to gripping mechanism with the breaker chucking of massive materials such as fractured rock, coal, cement block.

This type of breaker is that people know.In use, on massive material, open a hole to hold breaker.When outburst the breaker of carbon dioxide in being located at massive material that causes was come out and expand this material of fragmentation, breaker should remain in the hole.People explored the whole bag of tricks and attempted to prevent that breaker was pushed out from the holes, but did not still have a kind of method can be successful fully.

Purpose of the present invention is exactly in order to solve or to alleviate this problem.

According to the present invention, it provides a kind of gripping mechanism that is used for the breaker of broken massive material is clamped on a hole on this massive material.This gripping mechanism comprises that a housing can stretch to the clamping element of massive material, be arranged on and be used in the housing pushing clamping element to the pushing member of massive material and the Connection Element that housing is linked to each other with breaker from body.

In preferred embodiment of the present invention, pushing member comprise one can lengthwise movement in housing wedge.Clamping element comprises a pair of skewback, has the hole on it, and the rock drill bit of carbide alloy is being set respectively in the hole.During use, gripping mechanism is placed in the hole of massive material, and when wedge vertically advanced, skewback rode over respectively on the inclined-plane of wedge, drill bit is released in the hole wall in said hole, gripping mechanism and any coupled breaker are remained in the massive material.The unit that is connected that housing and crushing mechanism are linked to each other comprises a male-pipe, and it is screwed in the cooperation internal thread hole in the housing, and the other end of this pipe is screwed in the cooperation internal thread hole on the breaker.After part that male-pipe enters breaker was screwed in fully, the rotation of breaker made male-pipe screw in gripping mechanism, promotes said wedge immediately.In an improved form, when gripping mechanism is not that wedge can adjust the position so that the active force equalization that clamping element applied when being positioned at the center in hole of massive material.For this reason, wedge is arranged on the mandrel and links to each other with mandrel by a flat head screw, and mandrel puts in also can transverse movement in the hole in the hole of male-pipe.Like this, at the unbalanced side force that acts on the wedge, wedge can automatic centering.A wear washer is located between wedge and the male-pipe and by a spring and remains between the two.Spring is with one heart round mandrel and be compressed, thus generation effect between the not-go-end of mandrel and packing ring.Packing ring is located by a flat head screw adjustablely.

In order to understand the present invention better, now illustrate some embodiments of the present invention in conjunction with the accompanying drawings, wherein,

Fig. 1 is provided in a side of apparatus of the present invention stand-by in the boring of rock;

Fig. 2 is the longitudinal section of the part of device shown in Figure 1;

Fig. 3 is the vertical view of device shown in Figure 2;

Fig. 4 is the left view of device shown in Figure 2;

Fig. 5-the 11st, the part diagram of Fig. 1-4 shown device;

Figure 12 is the cross sectional view of the improved form of Fig. 1-11 shown device,

Figure 13 is that Figure 12 improved form descends fragmentary sectional view in working order;

Figure 14 is the cross sectional view along B-B line among Figure 12.

With reference to Fig. 1, it has represented that one is arranged in the boring for the treatment of on the fractured rock, is used to tighten the composite set that the gripping mechanism of this breaker is formed by a breaker and.Breaker constitutes (Cardox is a registration mark) by Cardox pipe 3, and gripping mechanism comprises a housing 2, and pipe 3 and housing 2 link together by the male-pipe 4 that its two ends are screwed into respectively in the mate with threaded holes on pipe 3 and the housing 2.

With reference to Fig. 2, it has represented the end cross-sectional of Cardox pipe.Liquid carbon dioxide (CO under the pressure ₂) remain in the chamber 9 by dividing plate 8.Dividing plate 8 compresses the location by screwed pipe 4, and screwed pipe then matches with the screw thread of managing 3 ends, and housing 2 has internal thread freely to screw in for the other end of pipe 4.Piston 10 slides in the cylindrical hole of pipe 2, is fixed with a wedge 14 on the piston.Two skewbacks 5 match to merge with two apparent surfaces of wedge 14 and extend in two radially relative on the pipe 2 grooves 15.The rock drill bit of carbide alloy is installed in the hole on the skewback 5, and shown in the figure two, but also can adopt a plurality of.

During use, will manage 4 internal thread holes 13 of spinning in pipe 3 tightly earlier, push down dividing plate 8.The other end of pipe 4 is spinning in pipe 2 moderately, and the piston 10 on the end that rests against pipe 4 is on the position of Fig. 2.Skewback 5 leans against on the thin end of voussoir 14 (being in hatched position).The summit of drill bit 6 is positioned at the external diameter of pipe 2.Then, as shown in Figure 1 composite set is inserted in the boring of rock and and rotate pipe 3 along arrow A, pipe 4 just screws in housing 2, and promote the position of piston 10 and wedge 14 arrival 14B as shown in Figure 2 along arrow B, so skewback 5 just rides on the wedge 14 and stretch out in the groove 15 2 along the arrow C direction from housing, summit up to drill bit 6 is pressed into rock, and the outer rim of skewback 5 also is pressed against on the rock tightly.When causing the Cardox pipe, gas breaks through dividing plate 8 and breaks out from managing 4 through via hole 7.Part gas is gone out from the hole, and on impact piston 10, its energy makes the wedge 14 between the skewback 5 more firm, thereby has increased clamping force.The diameter of hole D can be different, so that change the air pressure that acts on the piston 10 as required.

After the initiation, in order to take out pipe from the hole, pipe 3 rotates along the direction opposite with arrow A, so spur wedge 14 and skewback 5 is regained.Some spring (not shown) match with skewback 5 and these springs contact with wedge 14 all the time.Spring works along the direction opposite with arrow C.In addition, also being provided with a kind of device (not shown) makes pipe 4 and piston 10 hinged.Like this, when pipe 4 screws out from housing 2, just pull out by force along the steering handle wedge 14 opposite with arrow B.

In said apparatus, when wedge 14 when arrow B direction is moved, the groove moderate of skewback 5 from housing 2 stretches out, drill bit 6 is embedded on the relative both sides in the hole in the rock simultaneously, makes gripping mechanism and hole concentric.Yet because the bending of pipe or the curvature in hole, pipe 2 may be bound to a side in hole, produces side force so may mainly be embedded on the rock and to wedge 14 by an apex point, and this does not wish to take place.

For preventing above-mentioned phenomenon, a kind of improved gripping mechanism is discussed below in conjunction with Figure 12-14.Wedge 14 is drilled with a hole that holds mandrel 26.Mandrel remains in the hole by the flat head screw that is located between the convex shoulder 14,25.A wear washer 16 and a short cover 17 that has than large diameter 18 are being overlapped in mandrel 26 sky.Apply active force at spring 19 to the not-go-end 20 of packing ring 16, flat head screw 21 is used for short cover 17 is fixed in the drill bit 22 of pipe 4.Wear-resisting thrust washer 23 is located at wedge 14 and manages between 4, and the three connects together tightly under the effect of spring 18, but still still hinged.

During use, wedge 14 may be subjected to side force, and it will move in the direction of arrow E, simultaneously, as previously mentioned, can move in the direction of arrow C because of managing 4 rotation.

For achieving the above object, also can adopt any other similar improvement.

Be appreciated that the foregoing description only is for example, can have many versions within the scope of the invention.

Claims

1, a kind of gripping mechanism, be used for the breaker of a broken massive material is clamped on a hole of this massive material, comprise a housing (2), can be from saidly crossing the clamping element (5) that be pushed to said massive material the housing (2), being located at and being used in the said housing (2) pushing said clamping element (5) to the pushing member (14) of said massive material and the Connection Element (4) that housing (2) is linked to each other with said breaker.

2, a kind of gripping mechanism as claimed in claim 1 is characterized in that, said pushing member comprises the wedge (14) of a lengthwise movement in said housing (2).

3, a kind of gripping mechanism as claimed in claim 2 is characterized in that: said clamping element (5) is included on said wedge (14) surface and slides, the skewback to said massive material pushed outwards (5) when said wedge (14) advances.

4, a kind of gripping mechanism as claimed in claim 3 is characterized in that, said clamping element comprises the drill bit (6) that is located at respectively in the skewback (5).

5, a kind of gripping mechanism as claimed in claim 4 is characterized in that, said drill bit (6) is made by hard material.

6, the described gripping mechanism of a kind of arbitrary as described above claim is characterized in that, said Connection Element comprises the male-pipe (4) in the internal thread hole that screws in said housing (2).

7, a kind of gripping mechanism as claimed in claim 6, it is characterized in that, said male-pipe (4) can screw in the cooperation internal thread hole of said breaker, screw in the internal thread hole of said breaker when said male-pipe after, said male-pipe (4) can screw in housing (2), so that pushing member (14) subsequently.

8, the described gripping mechanism of a kind of arbitrary as described above claim is characterized in that, is provided with an element (26) and makes the pushing member (14) can be with respect to said Connection Element (4) transverse movement, so that the cross force equalization on the said clamping element (5).

9, a kind of gripping mechanism as claimed in claim 8 is characterized in that, is provided with to make said pushing member be close to the flexible member of said Connection Element.

10, a kind of gripping mechanism as claimed in claim 8 or 9 is characterized in that, described element (26) comprises a mandrel that is arranged in the said pushing member (14), and this mandrel is connected to also can transverse movement in Connection Element in the said Connection Element.