JP2585060Y2 - Boom head drop-off prevention mechanism of drilling device - Google Patents

Boom head drop-off prevention mechanism of drilling device

Info

Publication number
JP2585060Y2
JP2585060Y2 JP6124592U JP6124592U JP2585060Y2 JP 2585060 Y2 JP2585060 Y2 JP 2585060Y2 JP 6124592 U JP6124592 U JP 6124592U JP 6124592 U JP6124592 U JP 6124592U JP 2585060 Y2 JP2585060 Y2 JP 2585060Y2
Authority
JP
Japan
Prior art keywords
boom
boom head
drilling device
head
bolt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP6124592U
Other languages
Japanese (ja)
Other versions
JPH0624091U (en
Inventor
勉 金子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Co Ltd
Original Assignee
Furukawa Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Furukawa Co Ltd filed Critical Furukawa Co Ltd
Priority to JP6124592U priority Critical patent/JP2585060Y2/en
Publication of JPH0624091U publication Critical patent/JPH0624091U/en
Application granted granted Critical
Publication of JP2585060Y2 publication Critical patent/JP2585060Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Description

【考案の詳細な説明】[Detailed description of the invention]

【0001】[0001]

【産業上の利用分野】本考案は、さく岩機を搭載したガ
イドシェルを支持するブームを備えたトンネルジャンボ
等のさく孔装置の、ブームヘッドの脱落を防止する機構
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for preventing a boom head from dropping out of a boring device such as a tunnel jumbo provided with a boom for supporting a guide shell on which a rock drill is mounted.

【0002】[0002]

【従来の技術】トンネル掘削等のさく孔作業において、
さく孔装置は過酷な条件下で使用され、さく岩機を搭載
したしたガイドシェルを支持するブームは、先端部が常
に切羽や天盤から落下する岩石による衝撃にさらされて
いる。落下する岩石が大きいと単にブームが破損するだ
けでなく、さく孔装置の台車本体まで損傷することがあ
り非常に危険である。
2. Description of the Related Art In drilling work such as tunnel excavation,
The drilling device is used under severe conditions, and the boom supporting the guide shell on which the rock drill is mounted is constantly exposed to impacts caused by rocks whose tips fall from the face and the roof. If the falling rock is large, not only the boom is damaged but also the bogie body of the drilling device may be damaged, which is very dangerous.

【0003】そこで、落下する岩石が大きいときに被害
をさく孔装置の台車本体まで及ぼさず最小限に止めるた
めに、ガイドシェルを支承するブームヘッドをブームの
前端部に固定ボルトで連結し、台車まで損傷するような
異常外力がブームヘッドに発生した場合には、この固定
ボルトが破断されるよう設計していた。
[0003] In order to minimize the damage of the falling rock without affecting the bogie body of the boring device when the rock is large, the boom head supporting the guide shell is connected to the front end of the boom with fixing bolts. This bolt was designed to be broken if an abnormal external force was applied to the boom head that would damage the boom head.

【0004】[0004]

【考案が解決しようとする課題】しかし、固定ボルトが
一度に切断されるほど大きくはないが、局部的に破損を
生じさせる程度の落石や、ガイドシェルを岩盤に衝突さ
せるような不適切な操作が繰返されると、固定ボルトの
破損が発見されないまま徐々に進行し、予期しないとき
に突然破断して、ブームヘッドが脱落する事故を生ずる
おそれがある。
[Problem to be Solved by the Invention] However, although the fixing bolt is not large enough to be cut at one time, an improper operation such as falling rocks or causing a guide shell to collide with the bedrock can cause local damage. Is repeated, the fixing bolt may gradually progress without any damage being found, and may suddenly break at an unexpected time, possibly causing the boom head to fall off.

【0005】本考案は、さく孔装置のブームにおけるか
かる問題を解決するものであって、固定ボルトの破断に
より直ちにブームヘッドが脱落するのを防止することの
できるブームヘッド脱落防止機構を提供することを目的
とする。
The present invention solves such a problem in the boom of the drilling device, and provides a boom head falling-off prevention mechanism capable of preventing the boom head from falling off immediately due to breakage of a fixing bolt. With the goal.

【0006】[0006]

【課題を解決するための手段】本考案は、台車に枢支し
たブームの前端部に、さく岩機を搭載したガイドシェル
を支承するブームヘッドを固定ボルトで連結したさく孔
装置において、前記ブームとブームヘッドとの連結部に
緩衝材を介してダミーボルトを設けることにより上記課
題を解決している。
SUMMARY OF THE INVENTION The present invention relates to a boring device in which a boom head for supporting a guide shell on which a rock drill is mounted is connected to a front end of a boom pivotally supported by a bogie by a fixing bolt. The above-mentioned problem is solved by providing a dummy bolt at a connection portion between the motor and the boom head via a cushioning material.

【0007】[0007]

【作用】ダミーボルトは緩衝材を介して取付けられてい
るため、常時はブームとブームヘッドとの連結部の固定
には関与せず、ブームヘッドに異常外力が作用してもダ
ミーボルトの損傷は生じない。何らかの原因により固定
ボルトが破断され、ブームヘッドが脱落しようとする
と、緩衝材の収縮量だけ変位した位置でダミーボルトが
ブームヘッドを支持し脱落するのを防止する。ブームヘ
ッドは緩衝材の収縮量だけ変位するため、固定ボルトの
破断は直ちに発見され、オペレータは対策を講ずること
ができる。
[Function] Since the dummy bolt is mounted via the cushioning material, it does not normally participate in fixing the connection between the boom and the boom head. Even if an abnormal external force acts on the boom head, the dummy bolt is not damaged. Does not occur. If the fixing bolt is broken for any reason and the boom head tries to fall off, the dummy bolt supports the boom head at a position displaced by the amount of shrinkage of the cushioning material and prevents the dummy bolt from falling off. Since the boom head is displaced by the amount of shrinkage of the cushioning material, the breakage of the fixing bolt is immediately detected, and the operator can take measures.

【0008】[0008]

【実施例】図1は本考案の一実施例であるさく孔装置の
側面図、図2はブームの側面図、図3はブームとブーム
ヘッドとの連結部を拡大して示す側面図、図4はボルト
の配置の説明図、図5はダミーボルトの取付状態の説明
図である。本実施例では、さく孔装置10は、台車11
の基台12上にブーム台13を旋回軸14によって枢着
し、このブーム台13に伸縮可能なブーム15の下端を
俯仰軸16によって枢着している。ブーム15には、基
台12との間に旋回用油圧シリンダ17、ブーム台13
との間には俯仰用油圧シリンダ18が設けられて旋回、
俯仰可能になっている。
1 is a side view of a drilling apparatus according to one embodiment of the present invention, FIG. 2 is a side view of a boom, and FIG. 3 is an enlarged side view showing a connecting portion between a boom and a boom head. 4 is an explanatory view of the arrangement of the bolts, and FIG. 5 is an explanatory view of the mounting state of the dummy bolts. In the present embodiment, the drilling device 10 includes a bogie 11
A boom base 13 is pivotally mounted on the base 12 by a revolving shaft 14, and a lower end of an extendable boom 15 is pivotally mounted on the boom base 13 by an elevation shaft 16. The hydraulic cylinder 17 for turning, the boom base 13
A hydraulic cylinder 18 for raising and lowering is provided between
It is possible to ascend.

【0009】ブーム15の前端部には、ブームヘッド4
0が固定ボルト41で連結されている。ブームヘッド4
0にはガイドシェル29が摺動可能に支承されている。
ガイドシェル29にはさく岩機30を搭載しフィードシ
リンダ(図示略)で前後方向に移動可能としている。さ
く岩機30にはロッド32を装着し、打撃と回転を与え
て切羽の岩石にさく孔する。
At the front end of the boom 15, a boom head 4
0 is connected by a fixing bolt 41. Boom head 4
A guide shell 29 is slidably supported at 0.
A rock drill 30 is mounted on the guide shell 29 and can be moved in the front-rear direction by a feed cylinder (not shown). The rock drill 30 is equipped with a rod 32, which is hit and rotated to drill a rock face.

【0010】ブーム15とブームヘッド40との連結部
Cの上辺には、固定ボルト41の間にダミーボルト42
が配置されている。このダミーボルト42は、図5に示
すように、通常は応力が働かないよう緩衝材43を介し
て取付けられている。従って、ダミーボルト42は、常
時はブーム15とブームヘッド40との連結部Cの固定
には関与せず、図6に示すように、ブームヘッド40に
異常な外力Fが作用しても損傷は生じない。
On the upper side of the connecting portion C between the boom 15 and the boom head 40, a dummy bolt 42
Is arranged. As shown in FIG. 5, the dummy bolt 42 is mounted via a cushioning member 43 so that no stress normally acts. Therefore, the dummy bolt 42 does not always participate in fixing the connection portion C between the boom 15 and the boom head 40, and even if an abnormal external force F acts on the boom head 40 as shown in FIG. Does not occur.

【0011】何らかの原因により固定ボルト41が破断
され、ブームヘッド40が図7に示すように脱落しよう
としても、図8に示すように、緩衝材43の収縮量だけ
変位した位置でダミーボルト42がブームヘッド40を
支持し、図9の状態でブームヘッド40の脱落が防止さ
れる。ブームヘッド40が緩衝材43の収縮量だけ変位
するため、固定ボルト41の破断は直ちに発見され、オ
ペレータは対策を講ずることができる。
Even if the fixing bolt 41 is broken for some reason and the boom head 40 tries to fall off as shown in FIG. 7, the dummy bolt 42 is displaced by the amount of contraction of the cushioning material 43 as shown in FIG. The boom head 40 is supported to prevent the boom head 40 from falling off in the state shown in FIG. Since the boom head 40 is displaced by the amount of contraction of the cushioning material 43, the breakage of the fixing bolt 41 is immediately detected, and the operator can take measures.

【0012】[0012]

【考案の効果】以上説明したように、本考案のさく孔装
置のブームヘッド脱落防止機構は、落石によるブームと
さく孔装置の台車本体の損傷を最小限に抑え、予期しな
いブームヘッドの脱落事故を防止することができる。
[Effects of the Invention] As described above, the boom head drop prevention mechanism of the drilling device according to the present invention minimizes damage to the boom and the bogie body of the drilling device due to falling rocks, and an unexpected boom head falling accident. Can be prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本考案の一実施例であるさく孔装置の側面図で
ある。
FIG. 1 is a side view of a drilling device according to an embodiment of the present invention.

【図2】ブームの側面図である。FIG. 2 is a side view of the boom.

【図3】ブームとブームヘッドとの連結部を拡大して示
す側面図である。
FIG. 3 is an enlarged side view showing a connecting portion between a boom and a boom head.

【図4】ボルトの配置の説明図である。FIG. 4 is an explanatory diagram of an arrangement of bolts.

【図5】ダミーボルトの取付状態の説明図である。FIG. 5 is an explanatory diagram of a mounting state of a dummy bolt.

【図6】ブームヘッドへの外力作用の説明図である。FIG. 6 is an explanatory diagram of an external force action on a boom head.

【図7】ブームヘッドの脱落状態の説明図である。FIG. 7 is an explanatory diagram of a state in which the boom head is dropped.

【図8】ブームヘッドの脱落防止状態の説明図である。FIG. 8 is an explanatory diagram of a state in which the boom head is prevented from falling off.

【図9】ブームヘッドの脱落防止状態の説明図である。FIG. 9 is an explanatory diagram of a state in which the boom head is prevented from falling off.

【符号の説明】[Explanation of symbols]

10 さく孔装置 11 台車 15 ブーム 29 ガイドシェル 30 さく岩機 40 ブームヘッド 41 固定ボルト 42 ダミーボルト 43 緩衝材 C 連結部 F 外力 Reference Signs List 10 drilling device 11 bogie 15 boom 29 guide shell 30 rock drill 40 boom head 41 fixing bolt 42 dummy bolt 43 cushioning material C coupling part F external force

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】 台車に枢支したブームの前端部に、さく
岩機を搭載したガイドシェルを支承するブームヘッドを
固定ボルトで連結したさく孔装置において、前記ブーム
とブームヘッドとの連結部に緩衝材を介してダミーボル
トを設けたことを特徴とするさく孔装置のブームヘッド
脱落防止機構。
1. A boring device in which a boom head for supporting a guide shell on which a rock drill is mounted is connected to a front end of a boom pivotally supported by a bogie by a fixing bolt, wherein a connecting portion between the boom and the boom head is provided. A boom head drop prevention mechanism for a drilling device, wherein a dummy bolt is provided via a buffer material.
JP6124592U 1992-08-31 1992-08-31 Boom head drop-off prevention mechanism of drilling device Expired - Fee Related JP2585060Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6124592U JP2585060Y2 (en) 1992-08-31 1992-08-31 Boom head drop-off prevention mechanism of drilling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6124592U JP2585060Y2 (en) 1992-08-31 1992-08-31 Boom head drop-off prevention mechanism of drilling device

Publications (2)

Publication Number Publication Date
JPH0624091U JPH0624091U (en) 1994-03-29
JP2585060Y2 true JP2585060Y2 (en) 1998-11-11

Family

ID=13165660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6124592U Expired - Fee Related JP2585060Y2 (en) 1992-08-31 1992-08-31 Boom head drop-off prevention mechanism of drilling device

Country Status (1)

Country Link
JP (1) JP2585060Y2 (en)

Also Published As

Publication number Publication date
JPH0624091U (en) 1994-03-29

Similar Documents

Publication Publication Date Title
US6003619A (en) Back driving automatic hammer
US4966417A (en) Device for guying a drift advancing machine within a drift
EP0389643A1 (en) Direct-acting impact ripper
JP2585060Y2 (en) Boom head drop-off prevention mechanism of drilling device
EP1274917B1 (en) Rock drilling rig
US4108253A (en) Elevatable operator's compartment having a drill steel guide for a mine drilling machine
US6785988B2 (en) Driving or mining machine
US5016942A (en) Anchor boring unit
JP4413312B2 (en) Crawler drill boom equipment
US4050259A (en) Safety shield and temporary roof support
AU2001248963A1 (en) Rock drilling rig
JP2001073662A (en) Rock crusher
JPS62288290A (en) Apparatus for mounting and supporting shaft part of drillingmachine
EP0920567B1 (en) Rock drilling rig
JP3025926B2 (en) Self-propelled drilling machine
GB1565802A (en) Boom arrangement for a bucket loader
JP3366602B2 (en) Front attachment support device for ground excavator
CN215949523U (en) Safety protection structure for rock-soil drilling and digging
JP3450117B2 (en) Drilling equipment for excavators
JP3020748B2 (en) How to set the maintenance position of the crawler drill guide shell
JP4467663B2 (en) Crawler drill and drilling method thereof
JPH0434236Y2 (en)
AU2001248964B2 (en) Rock drilling rig
JP2002295167A (en) Rock drill support mechanism
JP2023090002A (en) Construction machine

Legal Events

Date Code Title Description
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 19980728

LAPS Cancellation because of no payment of annual fees