CN-121977399-A - Tunnel shallow hole blasting blast hole cleaning device

CN121977399ACN 121977399 ACN121977399 ACN 121977399ACN-121977399-A

Abstract

The invention provides a cleaning device for blasting blastholes in shallow holes of tunnels, which relates to the technical field of shallow hole blasting of tunnels and comprises a first telescopic piece, a central column and a cleaning pipe sleeve, wherein spiral ribs are arranged on the inner wall of the cleaning pipe sleeve, one side of the cleaning pipe sleeve is provided with a slag inlet, a broken notch is formed at the position, corresponding to the slag inlet, of each spiral rib, an opening and closing plate is rotatably arranged at the slag inlet, a connecting rib group is arranged on the inner side of each opening and closing plate, the opening and closing plate can be switched to a closing station for blocking the slag inlet, or a slag inlet station for rotatably accommodating the cleaning pipe sleeve is rotatably arranged at the inner side of each slag inlet, a scraping plate is arranged beside each slag inlet, the central column is fixed at the telescopic end of the first telescopic piece, the cleaning pipe sleeve is coaxially and rotatably arranged outside the central column, and an arc plate is fixedly arranged at the lower half side of the central column. The device realizes the rock slag cleaning through the closed type in-pipe spiral conveying, radically eliminates the problems of broken stone splashing and dust diffusion, realizes continuous operation of slag scraping, slag feeding and slag conveying through the automatic station switching of the opening and closing plate, and effectively prevents the rock slag in the hole cleaning pipe sleeve from falling out.

Inventors

YANG BAOLIANG
LI HUAYUN
WANG FUGUO
WANG PENG
LIN SHANSHAN
FAN JINYANG
LI YAONAN
ZHANG MINGTIAN
ZHU ZILIN
MA LONGHAO
YANG WANG
LIU WANHUA
LIU GUOQI

Assignees

云南云岭隧道智能建造有限公司
重庆大学

Dates

Publication Date: 20260505
Application Date: 20260401

Claims (10)

1. The tunnel shallow hole blasting blast hole cleaning device is characterized by comprising a first telescopic piece, a central column and a cleaning Kong Guantao; The inner wall of the clear hole pipe sleeve is provided with a spiral rib along the axial extension of the spiral rib, one side of the clear hole pipe sleeve is provided with an axially extending slag inlet, the spiral rib forms a broken position gap corresponding to the slag inlet, the slag inlet is rotatably provided with an opening and closing plate, the inner side of the opening and closing plate is provided with a connecting rib group, the opening and closing plate can be switched to a closing station for plugging the slag inlet or rotate a slag inlet station for accommodating the clear hole pipe sleeve, the outer side of the clear hole pipe sleeve is provided with a scraping plate beside the slag inlet, and the scraping plate is inclined towards the slag inlet; One end of the center column is fixed at the telescopic end of the first telescopic piece, the hole cleaning pipe sleeve is coaxially and rotatably arranged outside the center column, an arc plate is fixedly arranged on the lower half side of the center column, and can be abutted to a joint rib group passing by and push the opening and closing plate to be switched to a closing station.
2. The tunnel shallow hole blasting blasthole cleaning device according to claim 1, wherein the connection bar group can be filled into the broken position gap of the spiral bar under the closing station so as to connect all parts of the spiral bar in a blocking way.
3. The tunnel shallow hole blasting blast hole cleaning device according to claim 1, wherein guide plates are connected between the two ends of the circular arc path of the circular arc plate and the surface of the central column respectively, and the guide plates are obliquely arranged.
4. The tunnel shallow hole blasting blast hole cleaning device according to claim 1, wherein the scraping plate is rotatably installed on the hole cleaning pipe sleeve, a torsion spring is installed at the rotating joint, so that elastic force is provided to drive the scraping plate to be far away from the slag inlet, a retainer ring is circumferentially arranged at one end of the first telescopic piece, which is close to the hole cleaning pipe sleeve, by taking the telescopic end of the first telescopic piece as a center, a limiting strip is installed on the scraping plate, the far end of the limiting strip extends towards the first telescopic piece in an inclined trend gradually approaching to the center column, and when the telescopic end of the first telescopic piece is in a limit shrinkage state, the far end of the limiting strip can be located in the retainer ring.
5. The tunnel shallow hole blasting big gun hole cleaning device according to claim 1, wherein a rotary hole is axially formed in the center column, one end, far away from the first telescopic piece, of the hole cleaning pipe sleeve is connected with a rotary rod, and the rotary rod is rotatably installed in the rotary hole.
6. The tunnel shallow hole blasting blast hole cleaning device according to claim 1, further comprising a driving mechanism, wherein the driving mechanism comprises a gear ring and a motor, the gear ring is arranged on the outer side of one end, close to the first telescopic piece, of the hole cleaning pipe sleeve, the motor is fixedly arranged on the center column through a support, and a first gear meshed with the gear ring is arranged at the output end of the motor.
7. The tunnel shallow hole blasting blast hole cleaning device according to claim 6, further comprising a water removing mechanism, wherein the water removing mechanism comprises a pumping assembly, a transferring bin, a water suction pipe and a water discharge pipe, the transferring bin is fixedly arranged on the central column, the top of the transferring bin is slidably penetrated with a piston column, the pumping assembly can drive the piston column to reciprocate, a first valve body which only allows water to enter and a second valve body which only allows water to be discharged are respectively arranged at the bottom of the transferring bin, one end of the water discharge pipe is connected with the second valve body, the water suction pipe is arranged above the circular arc plate and extends along the axial direction of the cleaning hole pipe sleeve, one end of the water suction pipe is closed, the other end of the water suction pipe is connected with the first valve body, a plurality of elastic suction heads are arranged on the water suction pipe along the length direction at intervals, and penetrate through the circular arc plate and the bottom end of the elastic suction heads is close to the inner wall of the cleaning hole pipe sleeve.
8. The tunnel shallow hole blasting blast hole cleaning device according to claim 7, wherein the pumping assembly comprises a second gear, a crank and a rocker, the second gear meshed with the gear ring is rotatably arranged on the support, one end of the crank is fixedly connected with the second gear, the other end of the crank is rotatably connected with one end of the rocker, and the other end of the rocker is rotatably connected with the piston column.
9. The tunnel shallow hole blasting blasthole cleaning apparatus as set forth in claim 7, wherein the elastic suction head has a pointed cone shape with a diameter reduced toward a bottom end.
10. The tunnel shallow hole blasting blast hole cleaning device according to claim 7, wherein a plurality of receiving openings are formed in the circular arc plate corresponding to the upper portions of the elastic suction heads.

Description

Tunnel shallow hole blasting blast hole cleaning device Technical Field The invention relates to the technical field of tunnel shallow hole blasting, in particular to a cleaning device for a blast hole of tunnel shallow hole blasting. Background In the shallow hole blasting operation flow, a hole cleaning procedure after a blast hole is formed is a core front link for guaranteeing blasting effect and operation safety. Before charging the blast hole, the residual broken stone, rock powder, construction ponding and slurry in the hole must be cleaned, if the cleaning of the hole is not thorough, the residual broken stone and rock powder in the hole can squeeze the charging space, so that the actual charging quantity is insufficient, the coupling property of the explosive and the hole wall is poor, and further the problems of poor blasting contour forming, undermining, half explosion and the like are caused, and the construction progress is seriously influenced. At present, a high-pressure blast hole cleaning device is generally adopted in blast hole cleaning operation of shallow hole blasting in a tunnel engineering site, and a blowpipe stretches into the bottom of a blast hole during the operation of the device, and broken stone, rock powder and accumulated water in the hole are blown out of the hole through high-pressure high-speed air flow. However, in long-term field application, the high-pressure air hole cleaning technology has outstanding safety risks, high-pressure high-speed air flow can spray sharp broken stones and mud water mixtures in holes outwards to form a large-range scattering splashing region, even if warning and individual protection are arranged in a narrow working space scene of a tunnel face, the damage to eyes, faces and limbs of constructors is easy to cause, and the high-pressure air hole cleaning technology can generate a large amount of high-concentration rock dust, so that the high-pressure air hole cleaning technology is difficult to rapidly spread in a limited ventilation space of the tunnel face and seriously damages occupational health of the constructors. In view of the above, it is highly desirable to provide a blast hole cleaning device capable of preventing broken stone dust from splashing, and improving operation safety. Disclosure of Invention Aiming at the defects in the prior art, the invention provides a shallow hole blasting blast hole cleaning device for a tunnel, so as to solve the problem that the conventional hole cleaning device can cause the outward injection of sharp broken stones and mud water mixtures in the blast hole and harm the safety and health of operators. The aim of the invention is achieved by the following technical scheme: the invention provides a cleaning device for shallow hole blasting blastholes of tunnels, which comprises a first telescopic piece, a central column and a cleaning Kong Guantao; The inner wall of the clear hole pipe sleeve is provided with a spiral rib along the axial extension of the spiral rib, one side of the clear hole pipe sleeve is provided with an axially extending slag inlet, the spiral rib forms a broken position gap corresponding to the slag inlet, the slag inlet is rotatably provided with an opening and closing plate, the inner side of the opening and closing plate is provided with a connecting rib group, the opening and closing plate can be switched to a closing station for plugging the slag inlet or rotate a slag inlet station for accommodating the clear hole pipe sleeve, the outer side of the clear hole pipe sleeve is provided with a scraping plate beside the slag inlet, and the scraping plate is inclined towards the slag inlet; One end of the center column is fixed at the telescopic end of the first telescopic piece, the hole cleaning pipe sleeve is coaxially and rotatably arranged outside the center column, an arc plate is fixedly arranged on the lower half side of the center column, and can be abutted to a joint rib group passing by and push the opening and closing plate to be switched to a closing station. Further, under the closing station, the connecting rib groups can be supplemented into the broken position gaps of the spiral ribs so as to separate and connect all parts of the spiral ribs. Further, guide plates are connected between the two ends of the arc path of the arc plate and the surface of the center column respectively, and the guide plates are obliquely arranged. Further, the scraper blade rotates to be installed on clear hole pipe box and rotates the junction and install the torsional spring to provide elastic force and order about the scraper blade and keep away from into the cinder notch, the one end that first extensible member is close to clear hole pipe box uses its flexible end to encircle as the center and is provided with the retaining ring, install spacing on the scraper blade, the distal end of spacing is the slope trend towards first extensible member direction that is close to the cente