CN211230312U - Telescopic drilling protective cover structure - Google Patents
Telescopic drilling protective cover structure Download PDFInfo
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- CN211230312U CN211230312U CN201921987379.4U CN201921987379U CN211230312U CN 211230312 U CN211230312 U CN 211230312U CN 201921987379 U CN201921987379 U CN 201921987379U CN 211230312 U CN211230312 U CN 211230312U
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Abstract
The utility model relates to a technical field who drills the protection casing discloses telescopic drilling protection casing structure, including protection casing, fixed rope and tensile rope, the protection casing includes a plurality of well cover bodies and end cover body, adjacent well cover body is the set of overlapping or expandes to arrange, end cover body is in the below of well cover body, and is set of overlapping or expandes to arrange with well cover body, adjacent well cover body is relative fixed arrangement through fixed rope, the one end of tensile rope is the activity and arranges and provides the tensile force, the other end of tensile rope runs through each well cover body respectively, and extend and connect the end cover body; when the drilling machine is operated, the bottom cover body is vertically placed right above the drill hole. When the down-the-hole hammer drills, the down-the-hole hammer vibrates broken rock slag and soil slag and sprays upwards under the influence of air flow and is blocked by the bottom cover body, the rock slag and the soil slag are accumulated on the ground of an orifice under the effects of reduced air pressure and dead weight, the rock slag and the soil slag are effectively prevented from splashing by mistake and rules, the pollution of the rock slag, the soil slag and the like in the construction process is effectively controlled, and the down-the-hole hammer has a remarkable environment-friendly effect.
Description
Technical Field
The patent of the utility model relates to a technical field who creeps into the protection casing particularly, relates to telescopic protection casing structure that creeps into.
Background
When the cast-in-place pile is drilled by a large-diameter down-the-hole hammer, high wind pressure provided by an air compressor is used as power, the high wind pressure enters a down-the-hole hammer impactor to drive a down-the-hole hammer drill bit to perform high-speed reciprocating impact operation, and residue soil and rock debris crushed by the down-the-hole hammer are carried and discharged by the high wind pressure along with a gap between a down-the-hole hammer drill rod and a hole wall and are scattered to the ground.
When the down-the-hole hammer drills into the soil layer section, the muck is sprayed out of the hole opening and splashes randomly, and dust floats; when the down-the-hole hammer drills in a rock stratum, a large amount of rock slag and rock debris are sprayed out of an orifice and are mixed with large dust, so that the air quality and visibility around the orifice are seriously influenced, and the field civilized construction condition is poor.
In order to solve the problems of muck, rock debris and dust generated at a hole opening in the drilling process of the down-the-hole hammer, a specially-assigned person is generally adopted to spray water at the hole opening so as to control the pollution generated at the hole opening, but a good effect is often difficult to achieve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a telescopic protection casing structure that creeps into aims at solving prior art, and the down-the-hole hammer creeps into the construction, the problem that the rock sediment pollutes.
The utility model discloses a realize like this, telescopic drilling protection casing structure, including protection casing, fixed rope and tensile rope, the protection casing includes a plurality of well cover bodies and end cover body, and is adjacent well cover body is the telescope arrangement or expandes to arrange, end cover body is in the below of well cover body, and with well cover body is the telescope arrangement or expandes to arrange, and adjacent well cover body is relative fixed arrangement through fixed rope, the one end of tensile rope is the activity and arranges and provides the tensile force, the other end of tensile rope runs through each respectively the well cover body, and extend and connect the end cover body; when the drilling machine works, the bottom cover body is vertically placed right above the drill hole.
Furthermore, the middle cover body is provided with at least one connecting lifting lug, the connecting lifting lugs of the adjacent middle cover bodies are arranged in an up-down corresponding manner, and two ends of the fixing rope are respectively connected with the connecting lifting lugs of the adjacent middle cover bodies; the bottom cover body is provided with at least one connecting lifting lug, the connecting lifting lug of the middle cover body and the connecting lifting lug of the bottom cover body are arranged in an up-down corresponding mode, and two ends of the fixing rope are respectively connected with the connecting lifting lug of the middle cover body and the connecting lifting lug of the bottom cover body.
Furthermore, the middle cover body is provided with at least three connecting lifting lugs, the three connecting lifting lugs are arranged at equal intervals along the circumference of the middle cover body, and the three connecting lifting lugs are arranged in a triangular shape.
Furthermore, the connecting lifting lug comprises two lug plates and a shaft pin which are arranged at intervals, fixing parts are respectively formed at two ends of the fixing rope, and the shaft pin penetrates through the fixing parts and the two lug plates respectively.
Furthermore, the middle cover body is arranged in a frustum shape with a small upper part and a big lower part; along top-down direction, the well cover body has longitudinal height, the fixed rope has longitudinal length, longitudinal height is greater than longitudinal length.
Furthermore, the middle cover body comprises an upper reinforcing ring, a cover plate and a lower reinforcing ring, the upper reinforcing ring is fixed at the top of the cover plate, the lower reinforcing ring is fixed at the bottom of the cover plate, and the cover plate is outwards obliquely arranged along the direction from top to bottom; the distance between the upper reinforcement ring and the lower reinforcement ring forms the longitudinal height.
Furthermore, the middle cover body is provided with at least one lifting lug, the bottom cover body is provided with at least one bottom lifting lug, and the tensile rope penetrates through the lifting lugs respectively and is connected with the bottom lifting lugs in an extending mode.
Furthermore, telescopic drilling protection casing structure includes the hoist engine, the one end of tensile rope is connected the hoist engine, the hoist engine starts, realizes that tensile rope possesses the tensile force.
Furthermore, the middle cover body is provided with two lifting lugs, the bottom cover body is provided with two bottom lugs, and the two lifting lugs are correspondingly arranged along the radial direction of the middle cover body and are distributed on two sides of the middle cover body at equal intervals; the telescopic drilling protective cover structure comprises two tensile ropes and two winches, the two tensile ropes and the two lifting lugs of a single middle cover body are arranged in a one-to-one correspondence mode, the two tensile ropes respectively penetrate through the lifting lugs of each middle cover body and are fixedly connected with the bottom lifting lugs in an extending mode; the two winches are arranged in one-to-one correspondence with the two tensile ropes.
Furthermore, the two winches are synchronously started or synchronously stopped.
Compared with the prior art, the utility model provides a telescopic protection casing structure that creeps into, before carrying out down-the-hole hammer and creeps into construction operation, the tensile force is cancelled to the tensile rope, each well cover body is the expansion with the bottom cover body and arranges, and the bottom cover body hangs down to directly over the drilling, when carrying out the down-the-hole hammer and creeps into, in the drilling process, the broken rock sediment of down-the-hole hammer vibration, the soil sediment, under the influence of air current, spout up, after flying out the drilling, be blockked by the bottom cover body, along with the wind pressure reduces and under the dead weight effect, the rock sediment, the soil sediment is piled up on drill way ground, effectively avoid rock sediment, soil sediment mistake rule to splash, pollution such as rock sediment, soil sediment in the effective control work progress, have apparent environmental protection effect; in addition, when the down-the-hole hammer drills, the middle cover body and the bottom cover body are arranged in a sleeved mode through the tensile rope along with the change of the drilling depth, or the adjacent middle cover bodies are arranged in a sleeved mode, the telescopic control of the protective cover structure is achieved, and the drilling construction requirements of different down-the-hole hammers are met.
Drawings
FIG. 1 is a schematic structural layout of a telescoping drilling shield structure provided by the present invention;
FIG. 2 is a perspective view of a protective cover of the telescoping drilling protective cover structure provided by the present invention;
FIG. 3 is a schematic perspective view of the protective cover of the retractable drilling protective cover structure according to the present invention in a nested state;
FIG. 4 is a perspective view of a middle shield body of the telescoping drilling shield structure provided by the present invention;
FIG. 5 is a schematic cross-sectional view of section A of the telescoping drilling shield structure provided by the present invention;
FIG. 6 is a schematic cross-sectional view of the section B of the telescoping drilling shield structure provided by the present invention;
FIG. 7 is a schematic perspective view of a connecting lug of the telescoping drilling shield structure provided by the present invention;
fig. 8 is a schematic perspective view of the winch and the protective cover according to the present invention;
fig. 9 is a schematic view of the bottom cover body and the middle cover body provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1-9, the preferred embodiment of the present invention is shown.
The utility model provides a telescopic protection casing structure that creeps into for solve down-the-hole hammer and creep into the construction, rock sediment, soil sediment, dust pollution's problem.
The telescopic drilling protective cover structure comprises a protective cover 10, a fixing rope 30 and a stretching rope 40, wherein the protective cover 10 comprises a plurality of middle cover bodies 11 and bottom cover bodies 12, the adjacent middle cover bodies 11 are arranged in a sleeved mode or in an unfolded mode, the bottom cover bodies 12 are arranged below the middle cover bodies 11 and are arranged in a sleeved mode or in an unfolded mode with the middle cover bodies 11, the adjacent middle cover bodies 11 are arranged in a relatively fixed mode through the fixing rope 30, one end of the stretching rope 40 is movably arranged and provides stretching force, and the other end of the stretching rope 40 penetrates through each middle cover body 11 and is connected with the bottom cover bodies 12 in an extending mode; during operation, the bottom cover 12 is suspended over the borehole.
According to the telescopic drilling protective cover structure, before down-the-hole hammer drilling construction operation is carried out, the tensile force is cancelled by the tensile rope 40, each middle cover body 11 and each bottom cover body 12 are arranged in an unfolded mode, the bottom cover bodies 12 are vertically placed right above a drill hole, when the down-the-hole hammer is drilled, rock slag and soil slag which are broken by vibration of the down-the-hole hammer are ejected upwards under the influence of air flow and are blocked by the bottom cover bodies 12 after flying out of the drill hole, and the rock slag and the soil slag are accumulated on the ground of the hole opening under the action of reduction of air pressure and self weight, so that the rock slag and the soil slag are effectively prevented from splashing by mistake and regulation, the pollution of the rock slag, the soil slag and the like in the construction process is effectively controlled, and the environment; in addition, when the down-the-hole hammer drills, the middle cover body 11 and the bottom cover body 12 are arranged in a sleeved mode through the tensile rope 40 along with the change of the drilling depth, or the adjacent middle cover bodies 11 are arranged in a sleeved mode, the telescopic control of the structure of the protective cover 10 is achieved, and the drilling construction requirements of different down-the-hole hammers are met.
The middle cover body 11 is provided with at least one connecting lifting lug 50, the connecting lifting lugs 50 of the adjacent middle cover bodies 11 are arranged in an up-down corresponding manner, and two ends of the fixing rope 30 are respectively connected with the connecting lifting lugs 50 of the adjacent middle cover bodies 11; the bottom cover body 12 is provided with at least one connecting lifting lug 50, the connecting lifting lug 50 of the middle cover body 11 and the connecting lifting lug 50 of the bottom cover body 12 are arranged in an up-down corresponding manner, and two ends of the fixing rope 30 are respectively connected with the connecting lifting lug 50 of the middle cover body 11 and the connecting lifting lug 50 of the bottom cover body 12; the adjacent middle cover body 11 is relatively fixedly arranged through a fixing rope 30, and the middle cover body 11 and the bottom cover body 12 are relatively fixedly arranged through the fixing rope 30; thereby integrating the middle cover body 11 and the bottom cover body 12 to realize the nesting arrangement or the unfolding arrangement.
Furthermore, the middle cover body 11 is provided with at least three connecting lifting lugs 50, the three connecting lifting lugs 50 are arranged at equal intervals along the circumference of the middle cover body 11, and the three connecting lifting lugs 50 are arranged in a triangular shape; with the arrangement, the protective cover 10 has more stability and reduces the shaking when being nested or unfolded.
The connecting lifting lug 50 comprises two lug plates 51 and a shaft pin 52 which are arranged at intervals, fixing parts are respectively formed at two ends of the fixing rope 30, and the shaft pin 52 respectively penetrates through the fixing parts and the two lug plates 51; the connection stability of the connection lug 50 and the fixing rope 30 is enhanced.
Furthermore, the ear plates 51 are arranged longitudinally and in a flat shape, the fixing portion is formed with a fixing hole, and the shaft pin 52 penetrates through the fixing hole and the two ear plates 51 respectively, so as to enhance the connection stability between the connecting lifting lug 50 and the fixing rope 30.
The bottom of the ear plate 51 is abutted against and fixed with the lower reinforcing ring 15, so that the arrangement of each ear plate 51 is convenient, and each ear plate 51 is arranged in a flush manner along the horizontal direction; and under the cooperation of the lower reinforcing ring 15 and the ear plate 51, the fulcrum force borne by the three connecting lifting lugs 50 can act on the lower reinforcing ring 15, so that the whole stress is better, and the lifting process is convenient to balance.
The lower reinforcing ring 15 is arranged in a circular shape, and the thickness of the lower reinforcing ring 15 is 6-8mm, so that the strength of the lower reinforcing ring 15 is ensured.
The top of the ear plate 51 is recessed downwards to form a mounting groove, when the middle cover bodies 11 and the bottom cover body 12 are arranged in a nested manner, or the adjacent middle cover bodies 11 are arranged in a nested manner, the fixing rope 30 is arranged in a bent manner, and the mounting groove is positioned between the adjacent middle cover bodies 11, or the mounting groove is positioned between the middle cover bodies 11 and the bottom cover body 12; therefore, the fixing rope 30 is partially embedded into the installation groove, the fixing rope 30 is effectively prevented from being extruded by the adjacent middle cover body 11, and the service life of the fixing rope 30 is prolonged.
The shaft pin 52 has two blocking positions, the fixing part is blocked on the blocking positions, and under the matching of the blocking positions and the fixing part, the shaking of the fixing part is reduced when the sleeve is overlapped or unfolded, and the stability of the sleeve is improved.
The shaft pin 52 has two blocking positions along the top-down direction, and each fixing rope 30 is arranged in a staggered manner, so that the stability of nesting or unfolding is improved.
The shaft pin 52 is provided with two clamping positions, namely a first clamping position and a second clamping position, the fixing part of the fixing rope 30 is clamped on the first clamping position, one end of the adjacent fixing rope 30 is fixed on the second clamping position, and the other end of the adjacent fixing rope 30 is fixed on the first clamping position of the adjacent shaft pin 52 below; the fixed ropes 30 are arranged in a staggered mode, and the stability of nesting or unfolding is improved.
The middle cover body 11 is arranged in a frustum shape with a small upper part and a big lower part; the middle cover body 11 has a longitudinal height from top to bottom, the fixing rope 30 has a longitudinal length, and the longitudinal height is greater than the longitudinal length; thus, the top of each middle cover 11 is embedded into the upper middle cover 11; thereby facilitating the nesting arrangement of the respective middle shields 11.
The bottom cover body 12 has a longitudinal height, and the longitudinal height of the bottom cover body 12 is consistent with that of the middle cover body 11; thus, the top of the bottom cover body 12 is embedded inside the upper middle cover body 11; thereby facilitating the nesting arrangement of the bottom shell 12 with the middle shell 11.
The middle cover body 11 comprises an upper reinforcing ring 14, a cover plate 13 and a lower reinforcing ring 15, the upper reinforcing ring 14 is fixed at the top of the cover plate 13, the lower reinforcing ring 15 is fixed at the bottom of the cover plate 13, and the cover plate 13 is obliquely arranged outwards along the top-down direction; the distance between the upper reinforcement ring 14 and the lower reinforcement ring 15 forms the longitudinal height; the cover plate 13 is arranged in an inclined mode outwards, so that rock debris and soil debris can be guided conveniently and can be collected conveniently.
And the whole structural strength is improved under the action of the upper reinforcing ring 14 and the lower reinforcing ring 15.
The middle cover body 11 is made of a stainless steel plate, and the thickness of the cover plate 13 is 2-3mm, so that the enough strength of the cover body is ensured.
The upper reinforcing ring 14 is arranged in a circular shape, and the thickness of the upper reinforcing ring is 1-3mm, so that the cover plate 13 is effectively prevented from being elastically deformed.
From top to bottom, a gap is formed between adjacent cover plates 13, and part of rock slag and soil slag are influenced by airflow and are discharged from the gap; because the longitudinal height is greater than the longitudinal length, the bottom of the cover plate 13 blocks the rock slag and the soil slag, the flow velocity of the rock slag and the soil slag is reduced, and the large-scale pollution caused by the rock slag and the soil slag is avoided.
In addition, the cover plate 13 is obliquely arranged, so that rock slag and soil slag passing through the gap can be guided, and the rock slag and the soil slag can be conveniently collected in a centralized manner.
The cover plate 13 is provided with an outward outer end face, the outer end face of the cover plate 13 is provided with a positioning block, and the inner end of the positioning block is fixed on the outer end face of the cover plate 13; when the stack is arranged to the final position, the outer end of the positioning block abuts against the inner end face of the adjacent cover plate 13; like this, avoid overlapping the cover to arrange, the shift position is too big, causes the damage of well cover body, simultaneously, when expanding, reduces rocking of adjacent well cover body 11, provides the stability of expanding.
The inner ends of the positioning blocks are arranged in a flush manner, inclined planes are formed at the inner ends of the positioning blocks, and the inclination angles of the inclined planes are consistent with the inclination angle of the cover plate 13; this facilitates the cooperative positioning between adjacent middle shells 11.
The bottom of locating piece supports and touches down beaded finish 15, and the locating piece acts on beaded finish 15 down for whole atress is better, and the process of drawing is convenient for balanced.
The outer end face of the cover plate 13 is provided with three positioning blocks, and the three positioning blocks and the three connecting lifting lugs 50 are arranged in a staggered and equidistant manner; set up like this, when the protection casing 10 structure is overlapped and is arranged or is expanded and arrange, three locating piece think with three connection lug 50 with the cooperation, make whole more have the stationarity, reduce and rock.
The middle cover body 11 is provided with at least one lifting lug 60, the bottom cover body 12 is provided with at least one bottom lifting lug, and the tensile ropes 40 respectively penetrate through the lifting lugs 60 and are connected with the bottom lifting lugs in an extending manner; in this way, the stretching rope 40 applies a stretching force to sequentially pull up the bottom cover 12 and each middle cover 11 from bottom to top, thereby realizing nesting arrangement.
The telescopic drilling protective cover 10 structurally comprises a winch 100, wherein one end of a tensile rope 40 is connected with the winch 100, and the winch 100 is started to realize that the tensile rope 40 has tensile force; facilitating automatic stretching or collection of the tensile cord 40; realizing automatic nesting arrangement or unfolding arrangement.
The middle cover body 11 is provided with two lifting lugs 60, the bottom cover body 12 is provided with two bottom lugs, and the two lifting lugs 60 are correspondingly arranged along the radial direction of the middle cover body 11 and are equidistantly distributed on two sides of the middle cover body 11; the telescopic drilling protective cover 10 structurally comprises two tensile ropes 40 and two winches 100, wherein the two tensile ropes 40 are arranged in one-to-one correspondence with the two lifting lugs 60 of a single middle cover body 11, and the two tensile ropes 40 respectively penetrate through the lifting lugs 60 of each middle cover body 11 and are connected with fixed bottom lifting lugs in an extending manner; the two winches 100 are arranged in one-to-one correspondence with the two tensile ropes 40; when the sleeve is sleeved or unfolded, the shaking of the middle cover body 11 and the bottom cover body 12 is reduced, and the stability of the sleeve is improved.
The two winches 100 are synchronously started or synchronously stopped; when the sleeve is sleeved or unfolded, the shaking of the middle cover body 11 and the bottom cover body 12 is reduced, and the stability of the sleeve is improved.
The lifting lug 60 of the middle cover body 11 at the lowest position is provided with a telescopic shaft, the telescopic shaft extends or contracts downwards, the telescopic shaft and the bottom lifting lug are arranged in an up-and-down corresponding mode, when the nesting state is changed into the unfolding state, the middle cover body 11 and the bottom cover body 12 are clamped too tightly, the bottom cover body 12 is pushed to deviate from the middle cover body 11 to move through downward extension of the telescopic shaft, and the unfolding state is facilitated.
The two lifting lugs 60 are respectively telescopic shafts, the two telescopic shafts are respectively arranged corresponding to the two bottom lugs up and down, and the two telescopic shafts are arranged in a synchronous starting manner; thus, the smoothness of deployment is improved.
The telescopic shaft is driven to rotate by a motor or driven to extend and retract by a hydraulic mode and the like.
The down-the-hole hammer drilling construction comprises a drilling machine 20, a drill rod and a down-the-hole hammer, wherein the drilling machine 20 drives the drill rod to rotate to drive the down-the-hole hammer to drill, and construction is achieved.
The drilling machine 20 is provided with a power head 21, and power is output through the power head 21 to provide driving force for the drill rod.
The drilling machine 20 is provided with a fixed pulley 22, and the stretching rope 40 passes through the fixed pulley 22, passes through the middle cover body 11 again and is connected with the bottom cover body 12 in an extending way; under the action of the fixed pulley 22, the extending direction of the tensile rope 40 is convenient to change, the winch 100 applies tensile force conveniently, and the damage to the tensile rope 40 is reduced.
A positioning ring 70 is arranged in the bottom cover body 12, a positioning hole 71 is formed in the middle of the positioning ring 70, a drill rod penetrates through the positioning hole 71, and the aperture of the positioning hole 71 is slightly larger than that of the drill rod, so that the drill rod is convenient to center under the action of the positioning ring 70; in the drilling process, the protective cover 10 is arranged in a nested manner from bottom to top along with the increase of the drilling depth, and the shaking of the bottom cover body 12 is reduced under the action of the positioning ring 70, so that the nested arrangement is facilitated.
The middle cover body 11 adjacent to the bottom cover body 12 is internally provided with a centering ring 80, a centering hole 81 is formed in the middle of the centering ring 80, the centering hole 81 and the positioning hole 71 are vertically and correspondingly arranged, the drill rod respectively penetrates through the positioning hole 71 and the centering hole 81, and under the action of the centering ring 80 on the positioning ring 70, the centering performance of the drill rod is enhanced, and the construction effect is improved.
A plurality of positioning strips 90 are arranged inside the bottom cover body 12, the positioning strips 90 are attached to the inner end face of the bottom cover body 12, the lower ends of the positioning strips 90 are fixedly arranged with the positioning ring 70, and the upper ends of the positioning strips 90 penetrate through the centering ring 80 and are movably arranged; in this way, the positioning strip 90 is prevented from interfering with the telescoping or deployment arrangement of the shield 10; in addition, under the action of the positioning strips 90, the shaking of the bottom cover body 12 and the middle cover body 11 is reduced when the protective cover 10 is in the nesting arrangement or the unfolding arrangement, so that the stability of the nesting arrangement or the stability of the unfolding arrangement is improved.
The upper end of the positioning strip 90 penetrates through the centering ring 80 and extends to the upper side of the centering ring 80, the extending length is determined according to the distance between the bottom cover body 12 and the middle cover body 11, and when the protection cover 10 is arranged in an unfolded mode, the upper end of the positioning strip 90 still penetrates through the centering ring 80, so that the protection cover 10 can be conveniently arranged in a sleeved mode or in an unfolded mode.
The bottom cover body 12 is vertically placed to a position 30-50 cm away from the ground through a stretching rope 40 to form an outer sleeve protective cover 10 structure surrounding the direction of the drill rod; the realization shelters from dregs, detritus, and again along with the wind pressure weakens and dead weight influence, dregs, detritus are all piled up near the drill way.
Example (b):
the bottom cover body 12 or the cover plate 13 of the middle cover body 11 is 2mm thick and 1020mm high, the bottom diameter is 1200mm, and the top diameter is 950 mm.
The connecting lifting lugs 50 are arranged at the bottom of the bottom cover body 12 or the middle cover body 11, and the number of the connecting lifting lugs is 3; the connecting lifting lug 50 consists of two lug plates 51 with holes punched in the middle and a shaft pin 52, the lug plates 51 are made of steel plates, the shaft pin 52 is used for binding a fixed steel wire rope, and the transverse distance between the two lug plates 51 is 22 mm.
The protective covers 10 are connected with the connecting lifting lugs 50 of the upper and lower middle cover bodies 11 through three fixing ropes 30 with the length of 750mm to form a combined structure along the vertical direction, and the specific connecting number can be configured according to the length of a drill rod.
The protection covers 10 are in a nested state when they are connected with each other, and the fixing rope 30 is in a curled state; in operation, the hoods 10 are separated from each other and the fixing ropes 30 are in a straightened state.
The lifting lugs 60 are arranged at the bottom of the bottom cover body 12 or the middle cover body 11, the number of the lifting lugs 60 is 2, the two lifting lugs 60 are symmetrically arranged along the bottom of the cylinder body, the lifting lugs 60 are steel sheets with the middle part perforated and the diameter of 12mm, the steel sheets are transversely arranged, the stretching type steel wire rope can penetrate through the holes, and the cylinder body can be lifted or put down through the stretching type steel wire rope.
When the lifting lugs 60 are connected, two tensile ropes 40 connected with a winch 100 penetrate through the fixed pulleys 22 on the power head 21 of the down-the-hole hammer drill 20 and then downwards penetrate through the lifting lugs 60 of all the protective covers 10, and the tail ends of the steel wire ropes are bound at the lifting lugs 60 of the bottom cover body 12.
The two winches 100 can be controlled to be switched on and off in a cab of the drilling machine 20, each winch 100 controls one tensile rope 40, and when the tensile ropes 40 are pulled and released, the two winches 100 need to be synchronously stretched and released, namely the two winches 100 adopt the same driving switch to realize synchronous starting.
After the lifting lugs 60 are connected, the winding machine 100 pulls and releases the tensile cords 40 to achieve the nesting and unfolding of the hood 10.
When the state is changed from the unfolding state to the nesting state, the winch 100 is controlled to synchronously pull the two tensile steel wire ropes, so that the bottom cover body 12 at the lower part is gradually lifted and gradually nests with each middle cover body 11 at the upper part.
The transition from the nested state to the deployed state is achieved if the hoist 100 lowers the tensile cord 40.
In order to avoid elastic deformation of the cover plate 13, a circle of 8mm upper reinforcing ring 14 is welded on the top of the cover plate 13 to improve the strength and the integrity of the cylinder body.
The bottom has welded the lower beaded finish 15 that is 8mm along circumference round and thickness, and lower beaded finish 15 is in the same place with the bottom welding of two otic placodes 51 of connecting lug 50, and the effect makes the fulcrum force that three connecting lug 50 of protection casing 10 received can act on the steel ring for whole atress is better, and the process of drawing is convenient for balanced.
The protection casing 10 welding of structure lowermost has two rings of 8mm thickness lower reinforcing rings 15, welds respectively in the upper portion and the lower part of the 50 vertical steel sheets of connection lug, welds vertical steel sheet in the middle of two rows of lower reinforcing rings 15 and improves the wholeness.
The shield 10 assembly steps mainly include:
and (3) structural assembly of the protective cover 10: the protective cover 10 which is well overlapped on the ground is well connected by a fixed steel wire rope and a stretching steel wire rope.
The top shield 10 is connected to the power head 21: the down-the-hole hammer drill 20 is in place, the drill rod is aligned to the center of the protective cover 10, and the upper power head 21 is lowered; 8 lifting lugs are uniformly distributed at the top of the protective cover 10 at the uppermost part and are fixedly connected with 8 lifting lugs on the power head 21 through 8 steel wire ropes; 2 stretching wire ropes are externally connected with a windlass 100 after passing through a fixed pulley 22 on a power head 21.
Installing a down-the-hole hammer: controlling the winch 100 to synchronously lift the two tensile steel wire ropes so that the lower protective cover 10 rises until the drill rod is exposed; after the drill rod is exposed, the down-the-hole hammer is connected, and then the winch 100 is controlled to synchronously put down the tensile steel wire rope, so that the protective cover 10 wraps the drill rod.
The protective cover 10 is applied as follows: the down-the-hole hammer starts to drill, and in the drilling process, rock residue soil residues which are vibrated and crushed by the down-the-hole hammer rise through a gap between a hole wall and a drill rod, are blocked by a protective cover 10 structure after flying out of a drill hole, and descend along with the reduction of wind pressure and the action of self weight, and are accumulated on the ground of the hole opening; and when the down-the-hole hammer drills to the designed elevation, the drilling is finished. The power head 21 pulls the drill rod and pulls out the down-the-hole hammer to complete the hole forming operation of the section.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The telescopic drilling protective cover structure is characterized by comprising a protective cover, a fixing rope and a stretching rope, wherein the protective cover comprises a plurality of middle cover bodies and bottom cover bodies, the adjacent middle cover bodies are arranged in a sleeved mode or in an unfolded mode, the bottom cover bodies are arranged below the middle cover bodies and arranged in a sleeved mode or in an unfolded mode, the adjacent middle cover bodies are arranged in a relatively fixed mode through the fixing rope, one end of the stretching rope is movably arranged and provides stretching force, and the other end of the stretching rope penetrates through each middle cover body respectively and is connected with the bottom cover bodies in an extending mode; when the drilling machine works, the bottom cover body is vertically placed right above the drilled hole.
2. The retractable drilling protective cover structure according to claim 1, wherein the middle cover body is provided with at least one connecting lifting lug, the connecting lifting lugs of the adjacent middle cover bodies are arranged in an up-down corresponding manner, and two ends of the fixing rope are respectively connected with the connecting lifting lugs of the adjacent middle cover bodies; the bottom cover body is provided with at least one connecting lifting lug, the connecting lifting lug of the middle cover body and the connecting lifting lug of the bottom cover body are arranged in an up-down corresponding mode, and two ends of the fixing rope are respectively connected with the connecting lifting lug of the middle cover body and the connecting lifting lug of the bottom cover body.
3. The telescoping drilling protective cover structure of claim 2, wherein said central cover body is provided with at least three said attachment lugs, said three attachment lugs being equally spaced apart along a circumference of said central cover body, and said three attachment lugs being arranged in a triangular pattern.
4. The retractable drilling protective cover structure according to claim 2, wherein the connecting lifting lug comprises two ear plates arranged at intervals and a shaft pin, two ends of the fixing rope respectively form fixing parts, and the shaft pin respectively penetrates through the fixing parts and the two ear plates.
5. The telescoping drilling shield structure of any of claims 1-4, wherein said middle shield is in a frustoconical arrangement with a small top and a large bottom; along top-down direction, the well cover body has longitudinal height, the fixed rope has longitudinal length, longitudinal height is greater than longitudinal length.
6. The retractable drilling protective cover structure according to claim 5, wherein the middle cover body comprises an upper reinforcing ring, a cover plate and a lower reinforcing ring, the upper reinforcing ring is fixed on the top of the cover plate, the lower reinforcing ring is fixed on the bottom of the cover plate, and the cover plate is obliquely arranged outwards along the top-down direction; the distance between the upper reinforcement ring and the lower reinforcement ring forms the longitudinal height.
7. The telescoping drilling shield structure according to any one of claims 1-4, wherein said central shield body is provided with at least one lifting lug, said bottom shield body is provided with at least one bottom lug, and said tensile cord extends through each of said lifting lugs and is connected to said bottom lug.
8. The telescoping drilling shield structure of claim 7, wherein the telescoping drilling shield structure comprises a hoist, one end of the tensile cord is connected to the hoist, and the hoist is activated to provide the tensile cord with a tensile force.
9. The retractable drilling protective cover structure according to claim 8, wherein the middle cover body is provided with two lifting lugs, the bottom cover body is provided with two bottom lugs, and the two lifting lugs are correspondingly arranged along the radial direction of the middle cover body and are equidistantly distributed on two sides of the middle cover body; the telescopic drilling protective cover structure comprises two tensile ropes and two winches, the two tensile ropes and the two lifting lugs of a single middle cover body are arranged in a one-to-one correspondence mode, the two tensile ropes respectively penetrate through the lifting lugs of each middle cover body and are fixedly connected with the bottom lifting lugs in an extending mode; the two winches are arranged in one-to-one correspondence with the two tensile ropes.
10. The telescoping drilling shield structure of claim 9, wherein two of said winches are in a synchronous start or synchronous stop arrangement.
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| CN201921987379.4U CN211230312U (en) | 2019-11-15 | 2019-11-15 | Telescopic drilling protective cover structure |
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| CN201921987379.4U CN211230312U (en) | 2019-11-15 | 2019-11-15 | Telescopic drilling protective cover structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585959A (en) * | 2021-07-14 | 2021-11-02 | 深圳市工勘岩土集团有限公司 | Double-power rock breaking construction method for full casing pipe shoe and down-the-hole hammer pipe |
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2019
- 2019-11-15 CN CN201921987379.4U patent/CN211230312U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585959A (en) * | 2021-07-14 | 2021-11-02 | 深圳市工勘岩土集团有限公司 | Double-power rock breaking construction method for full casing pipe shoe and down-the-hole hammer pipe |
| CN113585959B (en) * | 2021-07-14 | 2024-04-26 | 深圳市工勘岩土集团有限公司 | Double-power rock breaking construction method for full sleeve pipe boot and down-the-hole hammer heel pipe |
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