CN108560625B - Suspension type multi-bit rotary-impact combined tunneling type engineering grooving machine - Google Patents
Suspension type multi-bit rotary-impact combined tunneling type engineering grooving machine Download PDFInfo
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- CN108560625B CN108560625B CN201810659443.XA CN201810659443A CN108560625B CN 108560625 B CN108560625 B CN 108560625B CN 201810659443 A CN201810659443 A CN 201810659443A CN 108560625 B CN108560625 B CN 108560625B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/04—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging screws
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model relates to a suspension type multi-bit rotary-impact combined tunneling engineering grooving machine, which comprises a running gear with hoisting equipment and a power system and a monitoring device; the impact milling device comprises a vertical guide frame, drill bits arranged in groups and vertical high-frequency impact devices correspondingly arranged; the drill bit transmission shafts in each group are connected through a power transfer case arranged on a bottom beam or a middle beam of the guide frame, and are driven to rotate by the same power driving device; the drill rod of the high-frequency impact device is pressed against the top of a single drill bit transmission shaft or against the top surface of a connecting beam connected with a group of drill bit transmission shafts under the pushing of a buffer device or a plunger cylinder. The grooving device can finish grooving operations of various complex strata including soil layers, rock strata, gravels, boulders and the like with high efficiency and low cost, and has good effect. The tunneling and grooving mechanism combining multi-bit impact and rotary milling is realized, and rock formations around the groove wall are complete and low in damage.
Description
Technical Field
The utility model relates to a suspension type multi-bit rotary-impact combined tunneling type engineering grooving machine, and belongs to the technical field of grooving equipment.
Background
The inventor knows that in the engineering fields of water conservancy, traffic, construction and the like, various underground continuous walls need to be built under different geological conditions. In the practical construction process, it is a troublesome and yet to be solved problem to build various underground continuous walls by making deep grooves in the stratum containing gravel, boulders and flystones and harder strata. The existing multi-head drill grooving machine has the tunneling mechanism that a plurality of drill bits are rotated and milled under the weight, the digging speed is high, the mechanization degree is high, but the equipment has large volume self-weight and no impact effect, is mainly suitable for tunneling soil layers, is not suitable for pebble and drifting rock strata, and is not suitable for tunneling bedrock.
The inventor discloses a horizontal single-shaft directional back-impact combined engineering grooving machine in China and an utility model patent (patent number ZL 2017 20371264.7) applied by the inventor on the 4 th month 10 of 2017, and the technical scheme of the patent discloses a horizontal single-shaft directional rotary-impact combined tunneling type engineering grooving machine which comprises a running gear with hoisting equipment and a power system and a monitoring device; the hoisting equipment traction end is suspended with an impact milling device, and the impact milling device comprises a vertical guide frame, a deviation correcting device, a milling shaft with a milling cutter and an impact device; the axis of the milling shaft is positioned in the plane of the guide frame and is horizontally or obliquely arranged; the milling shaft is driven by a horizontal hydraulic motor or a vertical hydraulic motor through a reversing device, the milling shaft has a directional rotation milling state of sectional balance and reverse rotation, and the impact device is arranged in the guide frame; the connecting cross beam between the sectional milling shafts is hung below the bottom beam of the guide frame through a hanging sliding device, and the drill rod of the impact device is impacted on the connecting cross beam, the milling shafts and the positioning drill bit under the hydraulic drive. On one hand, the structure adopts a mode of sectioning and reversely rotating a milling shaft to balance milling counter force, so that directional deviation of a digging device is avoided; on the other hand, the connecting beam is additionally arranged below the bottom beam of the guide frame, and the digging device comprising the milling shaft and the positioning drill bit is fixed on the connecting beam, so that the impact hammer directly impacts the connecting beam through the drill rod without being transmitted by the guide frame, the impact acceleration of the digging device on rock and soil is improved, the rock breaking effect is improved, and the impact influence of the impact hammer on the guide frame and equipment in the guide frame is reduced.
According to the scheme of the sectional reverse rotation balance of the milling shaft, directional rotation balance milling counter force is realized, so that the operation is more stable, the milling direction is fixed, the condition that a milling cutter selects a reasonable angle and a reasonable shape according to the cutting direction is ensured, the tunneling efficiency is greatly improved, and the abrasion of cutter teeth is reduced; the digging device (comprising a connecting beam, a milling shaft and a positioning drill bit) is in sliding connection with the bottom beam in the vertical direction, so that a drill rod of the impact device directly impacts the connecting beam of the digging device instead of directly impacting the bottom beam of the guide frame, the weight of a directly impacted body is greatly reduced, the impact acceleration of the digging device on rock and soil is improved, the rock breaking effect is improved, and the impact influence of the impact device on the guide frame and equipment in the guide frame is reduced; the bottom beam of the guide frame and the connecting beam are provided with buffer cushions, the hoisting equipment falls down during tunneling operation, the guide frame can be located on the connecting beam, the necessary drilling pressure intensity of cutter teeth to rock and soil is ensured by utilizing the weight of the guide frame, the guide frame and related equipment are not directly impacted, and the safety and reliability are greatly improved; the drilling pressure is adjusted by adjusting the lifting force of the hoisting equipment, because for different strata, when the milling is used for mainly tunneling the soft stratum, the drilling pressure is not too large, when the impact is used for mainly tunneling the hard rock, the tunneling efficiency can be greatly improved, and the abrasion of cutter teeth is reduced through the timely adjustment.
However, the inventors have found several problems in further practical studies: firstly, the grooving machine is particularly aimed at the deep groove of a narrow groove, and the reversing device needs to strictly control the size due to the limitation of the groove width, so that the machining and manufacturing requirements are high; secondly, radial bearings at two ends of the horizontal shaft bear impact load and transmit shock waves, and the requirements on the strength and the machining precision of the bearings are high, so that the equipment cost can be increased; the cost of replacing accessories such as bearings in construction is high, the horizontal shaft has more advantages in tunneling of soil-clamping stones and gravel layers, but the cost of engineering application fields without strict limit on groove thickness and groove shape except for seepage-proofing requirements is relatively high.
In addition, the inventor of the present application has invented a suspension type rotary vibration punching engineering grooving machine (patent No. 201410326904.3) in the technical scheme that 'each transmission shaft passes through a vibration punching hammer, the vibration punching hammer vertically moves along each transmission shaft' and 'the vibration punching hammer is lifted or placed on the upper end face of a frame positioning beam', and the transverse vibration punching hammer is distributed on the upper end face of the whole frame bottom beam. The transmission shafts of a plurality of drills penetrate through the whole percussion hammer, so that the implementation of the percussion hammer is difficult, if the percussion hammer is segmented, synchronous impact is difficult to achieve for each segment, and the forces are dispersed and swing is caused when the impact is asynchronous. The impact hammer impacts the frame, wherein the equipment bears larger impact, and meanwhile, the mass of the impacted body is large, so that the acceleration of rock impact and the rock crushing efficiency are influenced.
Therefore, the inventor proposes a new technical scheme to solve the technical problems and technical difficulties in the prior technical scheme.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the suspended multi-bit rotary-impact combined tunneling type engineering grooving machine which is more reasonable in structural design, convenient to process, high in tunneling efficiency and relatively low in equipment manufacturing cost.
In order to solve the technical problems, the utility model provides a suspension type multi-bit rotary-impact combined tunneling type engineering grooving machine, which comprises a running gear with hoisting equipment and a power system and a monitoring device; the impact milling device comprises a vertical guide frame, a deviation correcting device, drill bits arranged in groups and vertical high-frequency impact devices correspondingly arranged.
The drill bit transmission shafts in each group are connected through a power transfer case arranged on a bottom beam or a middle beam of the guide frame, and are driven to rotate by the same power driving device; the drill rod of the high-frequency impact device is pressed against the top of a single drill bit transmission shaft under the pushing of a buffer device or a plunger cylinder, or against the top surface of a connecting beam connected with a group of drill bit transmission shafts; the connecting cross beam connected with the drill bit transmission shafts is movably connected with the bottom beam of the guide frame through a group of hanging sliding devices.
When the high-frequency impact device impacts up and down under the driving of hydraulic or pneumatic power, impact energy is transmitted to the power driving device to drive the rotary drill bit.
When the drill bits work, the drill bits of two adjacent groups have the milling states of counter force and directional rotation of opposite rotation balance milling.
The technical scheme of the utility model is further defined as follows: the high-frequency impact device comprises a vertical stay chute arranged on the guide frame and an impact hammer arranged in the stay chute, and the buffer device or the plunger cylinder is arranged at the top of the impact hammer.
Further, the bottom beam of the guide frame is a box-shaped bottom beam; each group is two drill bits, the transmission shafts of the two drill bits are driven to rotate by the same hydraulic motor arranged on the box-shaped bottom beam through the connection of the spur gear reduction box, and the rotation directions of the two adjacent groups of drill bits are opposite; the straight-tooth gear reduction box is arranged in the box-shaped bottom beam; when the high-frequency impact device works, the vertical drill rod of the impact hammer is pressed on the top of the drill bit transmission shaft under the pushing of the buffer device or the plunger cylinder and is impacted timely.
Further, the drill bit also comprises a one-way thrust ball bearing sleeved on the drill bit transmission shaft; the unidirectional thrust ball bearing is positioned between the bottom of the box body of the box-shaped bottom beam and the spur gear reduction box.
Further, each group of drill bits comprises a center drill bit and side drill bits, wherein the center drill bits and the side drill bits are arranged on the same connecting beam; the drill bit transmission shafts in each group are connected through a straight-tooth gear reduction box arranged in a box-shaped bottom beam of the guide frame and are driven to rotate by the same hydraulic motor; the drill rod of the high-frequency impact device is pushed by the buffer device or the plunger cylinder to be pressed against the top of the transmission shaft of the center drill bit.
Further, a drill rod of the impact hammer is arranged at the top of the straight-tooth gear central shaft, and a central drill bit transmission shaft is connected with the gear central shaft through a spline; and the central shaft is provided with a straight-tooth gear which is in transmission connection with the straight-tooth gear reduction box, the straight-tooth gear reduction box is driven by the hydraulic motor to rotate, and the rotation directions of two adjacent groups of drill bits are opposite.
Further, each group comprises two drill bits arranged on the same connecting beam, and the transmission shaft of each drill bit is a hollow transmission rod; a shoulder is arranged at the bottom circumference of the hollow transmission rod; the hollow transmission rod sequentially passes through the connecting beam, the box-shaped bottom beam and the middle beam of the guide frame from bottom to top and then is movably connected with the deslagging main pipe through a connecting joint, and the shoulder is positioned below the connecting beam; the transmission shaft of each group of drill bits is driven to rotate by a vertical hydraulic motor and a spur gear reduction box which are arranged on a beam in the guide frame, and the rotation directions of two adjacent groups of drill bits are opposite;
the high-frequency impact device is positioned between the two drill bits; when the high-frequency impact device works, the vertical drill rod of the impact hammer is pushed by the buffer device or the plunger cylinder to be pressed at the middle position above the connecting beam.
Further, the suspension sliding device comprises a suspension shaft, a first shaft sleeve and a second shaft sleeve; the first shaft sleeve is embedded into a groove below the box-shaped bottom beam, and the second shaft sleeve is embedded into a groove above the connecting beam; the upper end part of the suspension shaft is movably arranged in the first shaft sleeve and can slide up and down along the first shaft sleeve, and the lower end part of the suspension shaft is fixedly arranged in the second shaft sleeve.
Further, the suspension sliding device further comprises a first pin shaft and a second pin shaft; the upper part of the suspension shaft is provided with a long round hole penetrating through the diameter along the radial direction, and the lower part of the suspension shaft is provided with a round hole penetrating through the diameter along the radial direction; a first mounting round hole is formed in the side wall of the first shaft sleeve and corresponds to two ends of the oblong hole of the suspension shaft; a second mounting round hole is formed in the side wall of the second sleeve and corresponds to the two ends of the round hole; the upper part of the suspension shaft is movably connected to the box-shaped bottom beam of the guide frame through a first pin shaft passing through the oblong hole and the first mounting hole, and the lower part of the suspension shaft is fixedly connected to the connecting beam through a second pin shaft passing through the round hole and the second mounting hole; the two ends of the first pin shaft and the second pin shaft are respectively provided with a sealing cover, and when the suspension shaft slides up and down along the first shaft sleeve, the long round hole moves up and down relative to the first pin shaft.
Further, the connecting beams of two adjacent groups of drill bits are connected through a limiting sliding device; the limiting sliding device comprises a groove plate fixedly connected with the connecting beam of the first group of drill bits and a sliding block fixedly connected with the connecting beam of the adjacent second group of drill bits; the sliding block is clamped and inserted in the sliding groove of the groove plate and can slide along the vertical direction of the sliding groove. The mass of the direct impact body can be reduced, and the impact acceleration can be improved, so that the tunneling efficiency is improved.
Further, a cutter for crushing the residual part of the drill bit is arranged at the bottom of the connecting beam; the cutters are mounted on the edge structure of the drill bit beyond the projection of the bottom of the tie beam.
The beneficial effects of the utility model are as follows: the grooving operation of various complex strata including soil layers, rock layers, gravels, boulders and the like can be completed efficiently at low cost, and the grooving operation has good effect. The tunneling and grooving mechanism combining the high-frequency impact and the rotary milling of the multiple drill bits is realized, and rock formations around the groove walls are complete and low in damage. The rectangular groove can be finished at one time, and pouring of the underground continuous wall can be finished in time under the cooperation of auxiliary equipment such as a forward and reverse circulating slag discharging system and the like.
Drawings
FIG. 1 is a schematic illustration of the implementation of the self-contained structure of the present utility model.
Fig. 2 is a schematic structural view of an embodiment 1 of the present utility model, wherein fig. 2-1 is a schematic structural view of an impact milling apparatus according to embodiment 1 of the present utility model; fig. 2-2 is a side view of fig. 2-1.
FIG. 3 is a schematic view of an impact milling apparatus according to embodiment 2 of the present utility model, wherein FIG. 3-1 is a schematic view of an impact milling apparatus according to embodiment 2 of the present utility model; fig. 3-2 is a side view of fig. 3-1.
Fig. 4 is a schematic structural view of an impact milling apparatus according to embodiment 3 of the present utility model.
Fig. 5 is a schematic structural view of the hanging slide in embodiment 2 and embodiment 3.
Fig. 6 is a longitudinal sectional view of the suspension slide in embodiment 2 and embodiment 3.
Fig. 7 is a top view of the limit sliding device in embodiment 2 and embodiment 3.
Wherein: the hoisting equipment 1, a slag discharging pipe 1-1, a traveling device 2, a guide frame 3, a bottom beam top 3-1, a bottom beam bottom 3-2, a strut slideway 3-3, a deviation rectifying device 4, an impact hammer 5, a drill bit 6, a convex shoulder 6-1, a hollow transmission rod 6-2, a movable joint 6-3, a slag discharging main pipe 6-4, a plunger cylinder 7, a hydraulic motor 8, a reduction gearbox 9, a single thrust ball bearing 10, a sliding bearing 11, a sealing device 12, a connecting beam 13, a left connecting beam 13-2, a right connecting beam 13-1, a hanging sliding device 14, a hanging shaft 14-1, a first shaft sleeve 14-2, a second shaft sleeve 14-3, a first shaft sleeve 14-4, a second shaft sleeve 14-5, a sealing cover 14-6, a long round hole 14-7, a round hole 14-8, a spline 15, a shaft sleeve 16, a limit sliding device 17, a groove plate 17-1, a chute 17-2 and a sliding plate 17-3.
Description of the embodiments
The utility model is further described below with reference to the drawings and detailed description.
Examples
The suspension type multi-bit rotary-impact combined tunneling type engineering grooving machine provided by the embodiment is as shown in fig. 1-2: comprising a running gear 2 with a hoisting machine 1 and a power system. The impact milling device is hung at the traction end of the winch equipment 1 and comprises a vertical guide frame 3, a deviation correcting device 4, two groups of drill bits and a high-frequency impact device which is arranged corresponding to each group of drill bits.
The walking device 2 is provided with two parallel walking tracks; the guide frame is positioned between the two walking tracks, and the vertical plane where the guide frame is positioned is parallel to the two walking tracks, or the guide frame is positioned outside the front ends of the two walking tracks, and the vertical plane where the guide frame is positioned is vertical to the two walking tracks.
The deviation correcting device 4 comprises a gravity deviation corrector, a push plate deviation corrector and a rotary deviation corrector; the guide frame 3 is provided with a perpendicularity sensing device; the top of the guide frame 3 is provided with cutters for breaking rock and soil. When the slotted hole is accidentally collapsed and the drill is buried, the steel wire rope can be pulled out while the impact device vibrates, and the guide frame is lifted out of the ground.
The high-frequency impact device comprises a vertical stay chute 3-3 arranged on the guide frame and an impact hammer 5 arranged in the stay chute, and a plunger cylinder 7 is arranged at the top of the impact hammer; the reduction gearbox is arranged in the box-type bottom beam of the guide frame 3, and the drill bit transmission shaft penetrates through the bottom beam top 3-1 and the bottom beam bottom 3-2.
In the two sets of drill bits of this embodiment, each set is provided with two drill bits 6, and the drilling rod of drill bit is the adjustable structure of length in this embodiment, generally through hydraulic pressure regulation or manual replacement, can adjust the length of partial drill bit transmission shaft in the super hard stratum, realizes the local concentrated impact gyration tunneling of groove section to concentrate moment of torsion and impact energy and deal with super hard stratum such as boulder.
The axes of the transmission shafts of all the drill bits are positioned in the plane of the guide frame 3; the two drill bit transmission shafts are driven to rotate by the same vertical hydraulic motor 8 arranged on the bottom beam top 3-1 through a spur gear reduction box 9, and the spur gear reduction box 9 is arranged in the box-type bottom beam. The drill rod of the impact hammer is pressed against the top of the transmission shaft of the single drill bit under the pushing of the plunger cylinder 7. The pushing of the plunger cylinder has three meanings: firstly, a certain static pressure can be applied to the drill bit by utilizing the weight of the frame, so that the drill bit generates necessary weight on bit, and when the impact hammer impacts under the driving of power, the impact load is combined with the static pressure load, so that the rock breaking efficiency is improved; secondly, the impact hammer can be prevented from generating idle impact when not abutting against the top of the transmission shaft of the drill bit, and the impact hammer and related equipment are easy to damage; thirdly, the upward counter force generated by the impact hammer impacting the rock is buffered, and the buffer protection effect is achieved on the equipment on the guide frame.
When the drill bit 6 works, the two groups of drill bits rotate in opposite directions, and have milling states of counter force and directional rotation of opposite rotation balance milling.
The utility model also comprises a one-way thrust ball bearing 10 sleeved on the drill bit transmission shaft; a one-way thrust ball bearing 10 is positioned between the bottom beam 3-2 and the spur gear reduction box 9. The unidirectional thrust bearing is disconnected with the gear when the drill bit normally abuts against and the groove bottom is drilled, and only plays a role in protection when large rock deformation is generated by one impact and sinks. The drill drive shaft passes through the installation through hole of the bottom beam, and a sliding bearing 11 and a sealing device 12 are arranged between the drill drive shaft and the installation through hole.
When the high-frequency impact device impacts under hydraulic or pneumatic drive, impact energy is directly transmitted to a single drill bit driven to rotate by power such as a hydraulic motor. Compared with the whole frame, the mass of the directly impacted body is small, which is favorable for improving the impact acceleration, thereby improving the tunneling efficiency.
Further optimized in this embodiment is: the hydraulic motor 8 adopts a low-rotation-speed high-power multi-curve hydraulic motor, the hydraulic motor is connected with a vertical transmission shaft of the drill bit through straight gears, and the impact on the hydraulic motor is less due to the sliding among the straight gears. The hoisting device 1 for hoisting the guiding frame 3 is provided with a wire rope tension sensor. In the tunneling process, the guide frame 3 is overlapped on the top of the drill bit transmission shaft under moderate tension of the suspension steel wire rope, and the necessary bit pressure strength of the cutter teeth to the rock and soil is ensured by utilizing the weight of the guide frame.
In the embodiment, two hydraulic motors can be linked to drive the straight gear box to drive three drill bits.
Examples
The suspension type multi-bit rotary-impact combined tunneling engineering grooving machine provided by the embodiment is shown in fig. 3 and 5-7, and comprises a traveling device 2 with a winch device 1 and a power system in fig. 1; the impact milling device is hung at the traction end of the winch equipment 1 and comprises a vertical guide frame 3, a deviation correcting device 4 and impact devices which are arranged corresponding to each group of drill bits. The impact device comprises a vertical stay chute 3-3 arranged on the guide frame and an impact hammer 5 arranged in the stay chute, wherein a plunger cylinder 7 is arranged at the top of the high-frequency impact hammer 5.
The present embodiment comprises two sets of bits, each set comprising three bits 6, each set comprising a centre bit and edge bits on either side of the centre bit.
The transmission shaft of each group of drill bits is arranged below the same connecting beam 13 through a bearing; the bottom of the guide frame 3 is provided with a box-shaped bottom beam, and the connecting beam 13 is movably connected with the bottom beam top 3-1 through a group of hanging sliding devices 14.
The suspension slide device 14 in this embodiment includes a suspension shaft 14-1, a first sleeve 14-2, a second sleeve 14-3, a first pin 14-4, and a second pin 14-5. The upper part of the suspension shaft 14-1 is provided with a long round hole 14-7 with a penetrating diameter along the radial direction, and the lower part is provided with a round hole 14-8 with a penetrating diameter along the radial direction. A first mounting round hole is formed in the side wall of the first shaft sleeve 14-2 and corresponds to two ends of the oblong hole of the suspension shaft; a second mounting round hole is arranged on the side wall of the second sleeve 14-2 and corresponds to the two ends of the round hole.
The first shaft sleeve 14-2 is embedded into a groove below the bottom beam top 3-1, and the second shaft sleeve 14-3 is embedded into a groove above the connecting beam 13; the upper part of the suspension shaft 14-1 is movably connected to the upper bottom beam 3-1 through a first pin 14-4 passing through the oblong hole and the first mounting hole, and the lower part of the suspension shaft 14-1 is fixedly connected to the contact beam 13 through a second pin 14-5 passing through the hole and the second mounting hole; both ends of the first pin 14-4 and the second pin 14-5 are provided with sealing covers 14-6, and when the suspension shaft slides up and down along the first shaft sleeve, the oblong hole moves up and down relative to the first pin.
The drill rod of the impact hammer 5 is arranged at the top of the straight-tooth gear central shaft 16, and the central drill bit transmission shaft is connected with the gear central shaft 16 through a spline 15; the drill bit 6 is composed of a hydraulic motor 8 and straight teeth
The gear reduction box 9 drives the rotary motion, and the rotation directions of two adjacent groups of drills are opposite; the length of the center bit drive shaft in this embodiment is an adjustable structure.
The contact beams 13 of two adjacent groups of drills in the embodiment are connected through a limiting sliding device 17. The limiting sliding device 17 comprises a groove plate 17-1 fixedly connected with the left connecting beam 13-2 of the first group of drill bits and a sliding block 17-3 fixedly connected with the right connecting beam 13-1 of the adjacent second group of drill bits; the edges of the two sides of the groove plate 17-1 are inwards extended and bent to form a chute 17-2; the sliding block 17-3 is clamped and inserted in the sliding groove 17-2 of the groove plate and can slide along the vertical direction of the sliding groove. A cutter is arranged at the bottom of the connecting beam 13 and is used for impacting the broken moment to form a residual crescent part which cannot be impacted by the drill bit during milling on the section of the groove.
In the embodiment, each drill bit group is hung below the bottom beam of the frame through the hanging sliding device, the vertical directions can mutually slide and mutually abut left and right, and the corresponding drilling devices are respectively impacted by the vertical impact hammers, so that the impact hammers do not need to be synchronous, and compared with the transverse impact hammers, the impact waves of the vertical impact hammers are gentle and long in action time, so that the cutter teeth are beneficial to cutting into rocks, the rock crushing efficiency is improved, and the problem of the original technical scheme is solved.
Meanwhile, each drill bit group connecting beam is separated from the frame through the hanging sliding device, the vertical directions can mutually slide, the drill bit groups connecting beams are mutually abutted left and right, and the vertical impact hammers are adopted to respectively impact drilling devices of corresponding groups, so that compared with the impact of the whole frame, the weight of a direct impact body is greatly reduced, the impact acceleration is favorably improved, and the rock breaking efficiency is effectively improved. Meanwhile, the impact on the guide frame and related parts in the guide frame is reduced, and the safety of the equipment is improved.
When tunneling operation is performed, the hoisting equipment enables the guide frame to be located on the grouped drill bit connecting beam, the weight of the guide frame is utilized to ensure the necessary drilling pressure intensity of cutter teeth to rock and soil, the guide frame and related equipment in the guide frame are not directly impacted, and the safety and reliability of the equipment are improved; the drilling pressure is regulated by regulating the hoisting force of the hoisting equipment, so that the drilling pressure is required to be large when the milling is used for mainly tunneling soft strata for different strata, and is required to be moderately reduced when the impact is used for mainly tunneling hard rock, and the tunneling efficiency can be greatly improved and the abrasion of cutter teeth can be reduced by timely regulating the tunneling mode.
The deviation correcting device 4 of the embodiment comprises a gravity deviation corrector, a push plate deviation corrector and a rotary deviation corrector; the guide frame 3 is provided with a perpendicularity sensor; the top surface of the connecting beam of the tunneling device is provided with a pressure sensor, and the hoisting equipment of the hoisting guide frame is provided with a steel wire rope tension sensor. In the tunneling process, the guide frame is overlapped at the top of the transmission shaft of the center drill under the moderate tension of the suspension steel wire rope, and the necessary bit pressure strength of the cutter tooth to the rock and soil is ensured by utilizing the weight of the guide frame.
The top of the guide frame is provided with cutters for breaking rock and soil. When the slotted hole is accidentally collapsed and the drill is buried, the steel wire rope can be pulled out while the impact device vibrates, and the guide frame is lifted out of the ground.
The walking device of the example is provided with two parallel walking tracks; the guide frame is positioned between the two walking tracks, and the vertical plane where the guide frame is positioned is parallel to the two walking tracks, or the guide frame is positioned outside the front ends of the two walking tracks, and the vertical plane where the guide frame is positioned is vertical to the two walking tracks.
In order to adopt the mud to protect the wall and timely slag, cool and lubricate in time, the guide frame is internally provided with a positive and negative circulation channel and a slag discharging pipe 1-1 which are mutually communicated, the slag discharging pipe is arranged beside a drill bit, a certain number of water gaps and water tanks are arranged on the drill bit 6, thereby forming a channel on the rock slag suction, and the top of the drill bit is provided with a slag discharging flow channel inlet. Auxiliary equipment such as a mud retaining wall and a reverse circulation slag discharging system are matched, and pouring of the underground continuous wall can be completed in time while grooving.
In the embodiment, two hydraulic motors can be linked to drive the straight gear box to drive three drill bits.
The top of the device is provided with a slag discharging flow passage inlet. Auxiliary equipment such as a mud retaining wall and a reverse circulation slag discharging system are matched, and pouring of the underground continuous wall is completed at the same time of grooving.
Examples
The structure in this embodiment is similar to that in embodiment 2 in principle, except that as shown in fig. 4: each group of the embodiment comprises two drill bits which are arranged on the same connecting beam 13, and the transmission shaft of each drill bit is a hollow transmission rod 6-2; the bottom circumference of the hollow transmission rod 6-2 is provided with a convex shoulder 6-1; the hollow transmission rod sequentially passes through the connecting beam 13, the box-shaped bottom beam and the straight-tooth gear reduction box arranged on the top of the middle beam 3-4 of the guide frame 3 from bottom to top, and is movably connected with the deslagging main pipe 6-4 through the movable joint 6-3. The convex shoulder 6-1 is positioned below the connecting beam 13, and a bearing and a seal are arranged between the shoulder and the connecting beam; the hollow transmission rod of each group of drill bits is driven to rotate by a vertical hydraulic motor 8 and a spur gear reduction box 9 which are arranged on a beam in the guide frame, and the rotation directions of the two adjacent groups of drill bits are opposite. The sliding between the spur gears can make the impact less influence on the hydraulic motor.
The high-frequency impact device is positioned between the two drill bits; when the high-frequency impact device works, the vertical drill rod of the impact hammer is pressed against the middle position above the connecting beam under the pushing of the buffer device or the plunger cylinder.
The reverse circulation deslagging mud passes through the pipe body of the hollow transmission rod 6-2, is upwards introduced into a fixed deslagging main pipe 6-4 arranged in the frame through a movable joint 6-3, and then is converged into a deslagging hose above the frame through a joint at the top of the frame.
Likewise, the drill bit contact cross beam is hung below the bottom beam of the guide frame through the hanging sliding device and is mutually abutted through the limiting sliding device.
In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the utility model.
Claims (10)
1. A suspension type multi-bit rotary-impact combined tunneling type engineering grooving machine comprises a running gear with hoisting equipment and a power system and a monitoring device; the hoisting equipment traction end suspension impact milling device is characterized by comprising a vertical guide frame, a deviation correcting device, drill bits arranged in groups and vertical high-frequency impact devices correspondingly arranged;
the drill bit transmission shafts in each group are connected through a power transfer case arranged on a bottom beam or a middle beam of the guide frame, and are driven to rotate by the same power driving device; the drill rod of the high-frequency impact device is pressed against the top of a single drill bit transmission shaft under the pushing of a buffer device or a plunger cylinder, or against the top surface of a connecting beam connected with a group of drill bit transmission shafts; the connecting cross beam connected with the group of drill bit transmission shafts is movably connected with the bottom beam of the guide frame through a group of suspension sliding devices;
when the high-frequency impact device impacts up and down under the drive of hydraulic or pneumatic power, impact energy is transmitted to the power driving device to drive the rotary drill bit;
when the drill bits work, the drill bits of two adjacent groups have the milling states of counter force and directional rotation of opposite rotation balance milling.
2. The suspended multi-bit rotary-impact combined tunneling type engineering grooving machine according to claim 1, characterized in that: the high-frequency impact device comprises a vertical stay chute arranged on the guide frame and an impact hammer arranged in the stay chute, and the buffer device or the plunger cylinder is arranged at the top of the impact hammer.
3. The suspended multi-bit rotary-impact combined tunneling type engineering grooving machine according to claim 2, characterized in that: the bottom beam of the guide frame is a box-shaped bottom beam; each group is two drill bits, the transmission shafts of the two drill bits are driven to rotate by the same hydraulic motor arranged on the box-shaped bottom beam through the connection of the spur gear reduction box, and the rotation directions of the two adjacent groups of drill bits are opposite; the straight-tooth gear reduction box is arranged in the box-shaped bottom beam;
when the high-frequency impact device works, the vertical drill rod of the impact hammer is pressed on the top of the drill bit transmission shaft under the pushing of the buffer device or the plunger cylinder and is impacted timely.
4. A suspended multi-bit rotary-impact combined tunneling type engineering grooving machine according to claim 3, characterized in that: the one-way thrust ball bearing is sleeved on the drill bit transmission shaft; the unidirectional thrust ball bearing is positioned between the bottom of the box body of the box-shaped bottom beam and the spur gear reduction box.
5. The suspended multi-bit rotary-impact combined tunneling type engineering grooving machine according to claim 2, characterized in that: each group of drill bits comprises a center drill bit and side drill bits, wherein the center drill bits and the side drill bits are arranged on the same connecting beam; the drill bit transmission shafts in each group are connected through a straight-tooth gear reduction box arranged in a box-shaped bottom beam of the guide frame and are driven to rotate by the same hydraulic motor; the drill rod of the high-frequency impact device is pushed by the buffer device or the plunger cylinder to be pressed against the top of the transmission shaft of the center drill bit.
6. The suspended multi-bit rotary-impact combined tunneling type engineering grooving machine according to claim 5, characterized in that: the drill rod of the impact hammer is arranged at the top of the straight-tooth gear central shaft, and the central drill bit transmission shaft is connected with the gear central shaft through a spline; and the central shaft is provided with a straight-tooth gear which is in transmission connection with the straight-tooth gear reduction box, the straight-tooth gear reduction box is driven by the hydraulic motor to rotate, and the rotation directions of two adjacent groups of drill bits are opposite.
7. The suspended multi-bit rotary-impact combined tunneling type engineering grooving machine according to claim 2, characterized in that: each group comprises two drill bits arranged on the same connecting beam, and the transmission shaft of each drill bit is a hollow transmission rod; a shoulder is arranged at the bottom circumference of the hollow transmission rod; the hollow transmission rod sequentially passes through the connecting beam, the box-shaped bottom beam and the middle beam of the guide frame from bottom to top and then is movably connected with the deslagging main pipe through a connecting joint, and the shoulder is positioned below the connecting beam; the transmission shaft of each group of drill bits is driven to rotate by a vertical hydraulic motor and a spur gear reduction box which are arranged on a beam in the guide frame, and the rotation directions of two adjacent groups of drill bits are opposite; the high-frequency impact device is positioned between the two drill bits; when the high-frequency impact device works, the vertical drill rod of the impact hammer is pushed by the buffer device or the plunger cylinder to be pressed at the middle position above the connecting beam.
8. The suspension type multi-bit rotary-percussion combined tunneling type engineering grooving machine according to claim 5 or 7, characterized in that: the suspension sliding device comprises a suspension shaft, a first shaft sleeve and a second shaft sleeve; the first shaft sleeve is embedded into a groove arranged below the box-shaped bottom beam, and the second shaft sleeve is embedded into a groove arranged above the connecting beam; the upper end part of the suspension shaft is movably arranged in the first shaft sleeve and can slide up and down along the first shaft sleeve, and the lower end part of the suspension shaft is fixedly arranged in the second shaft sleeve; the suspension sliding device further comprises a first pin shaft and a second pin shaft; the upper part of the suspension shaft is provided with a long round hole penetrating through the diameter along the radial direction, and the lower part of the suspension shaft is provided with a round hole penetrating through the diameter along the radial direction; a first mounting round hole is formed in the side wall of the first shaft sleeve and corresponds to two ends of the long round hole of the suspension shaft; a second mounting round hole is formed in the side wall of the second sleeve and corresponds to the two ends of the round hole; the upper part of the suspension shaft is movably connected to the box-shaped bottom beam of the guide frame through a first pin shaft penetrating through the oblong hole and the first mounting hole, and the lower part of the suspension shaft is fixedly connected to the connecting beam through a second pin shaft penetrating through the round hole and the second mounting hole; and sealing covers are arranged at two ends of the first pin shaft and the second pin shaft, and when the suspension shaft slides up and down along the first shaft sleeve, the oblong hole moves up and down relative to the first pin shaft.
9. The suspended multi-bit rotary-impact combined tunneling type engineering grooving machine according to claim 8, characterized in that: the connecting beams of two adjacent groups of drill bits are connected through a limiting sliding device; the limiting sliding device comprises a groove plate fixedly connected with the connecting beam of the first group of drill bits and a sliding block fixedly connected with the connecting beam of the adjacent second group of drill bits; the sliding block is clamped and inserted in the sliding groove of the groove plate and can slide along the vertical direction of the sliding groove.
10. The suspended multi-bit rotary-impact combined tunneling type engineering grooving machine according to claim 9, characterized in that a cutter for crushing the residual part of the broken bit is installed at the bottom of the connecting beam; the cutters are mounted on the edge structure of the drill bit beyond the projection of the bottom of the tie beam.
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| CN201810659443.XA CN108560625B (en) | 2018-06-22 | 2018-06-22 | Suspension type multi-bit rotary-impact combined tunneling type engineering grooving machine |
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| CN201810659443.XA CN108560625B (en) | 2018-06-22 | 2018-06-22 | Suspension type multi-bit rotary-impact combined tunneling type engineering grooving machine |
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| CN108560625B true CN108560625B (en) | 2023-08-01 |
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| CN109537669B (en) * | 2018-12-06 | 2023-08-11 | 陶德明 | Rectangular hammer combined with continuous wall |
| CN111648426B (en) * | 2020-06-15 | 2022-11-04 | 北京三一智造科技有限公司 | Drilling and grabbing device and winch for underground diaphragm wall construction |
| CN112064709B (en) * | 2020-07-16 | 2022-06-24 | 河海大学常州校区 | Combined rock breaking cutter head structure |
| CN111945811A (en) * | 2020-07-16 | 2020-11-17 | 河海大学常州校区 | Impact hammer device of combination broken rock tool bit |
| CN114278329B (en) * | 2021-12-28 | 2023-08-22 | 山东科技大学 | Drilling and punching combined type rock breaking device for tunnel tunneling |
| CN116104094B (en) * | 2023-04-13 | 2023-09-22 | 广东水电二局股份有限公司 | Ultra-deep underground continuous wall underwater self-compacting concrete and construction method thereof |
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| CN108560625A (en) | 2018-09-21 |
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Address after: Floor 18, Tiantongyuan, No. 231 Longpan Middle Road, Qinhuai District, Nanjing City, Jiangsu Province, 210000 Patentee after: Xiang Dongcai Patentee after: Liu Nong Address before: Floor 18, Tiantongyuan, No. 231 Longpan Middle Road, Xuanwu District, Nanjing City, Jiangsu Province, 210000 Patentee before: Xiang Dongcai Patentee before: Liu Nong |