CN213144535U - Reinforced wellhead sieve for improving safety of underground operation - Google Patents

Abstract

The utility model relates to a mining safety production technical field, concretely relates to improve downhole operation safety's reinforcement type well head sieve, through set up reinforced structure on the sieve girder, both guaranteed the control bold and passed through the rate, simultaneously withstand voltage, resistant pound, wear-resisting, each item technical performance such as corrosion resistance aspect is excellent for drop shaft mouth sieve life is showing and is promoting. The problem of current well head sieve adopt well head main material pre-buried concrete placement is gone on is solved, lead to the sieve girder to expose completely outside, because the environment is moist in the pit, air humidity is big for main material antioxidant capacity reduces, and the corrosion rate accelerates, and the sieve damages with higher speed, and well head sieve often bears the ore and presses to pound the impact simultaneously, and main material deformation rate accelerates, appears warping and fracture, influences borehole operation safety by a wide margin.

Description

Reinforced wellhead sieve for improving safety of underground operation

Technical Field

The utility model relates to a mining safety production technical field, concretely relates to improve downhole operation safety's reinforcement type well head sieve.

Background

The screen installed on the wellhead of the underground mine drop shaft mainly adopts two forms of a grid screen and a bar screen, which are important means for controlling the passing rate of large blocks in the mine and are indispensable important facilities for underground mine and mountain drop shaft mine, the screen main material of the drop shaft wellhead is processed by a rail or I-steel at present, and the aim is to ensure the strength and the service life of the screen main material and reduce the repeated loss of manpower and materials caused by frequent repair due to damage.

The mode that current well head sieve adopted well head main material pre-buried concrete placement goes on, leads to the sieve girder to expose completely outside, because the environment is moist in the pit, air humidity is big for main material antioxidant capacity reduces, and the corrosion rate accelerates, and the sieve damages with higher speed, and the well head sieve often bears the ore pressure simultaneously, smashes the impact, and main material deformation rate accelerates, appears warping and fracture, influences borehole operation safety by a wide margin.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above problem, provide an improve reinforcement type well head sieve of borehole operation safety.

The technical scheme who adopts is, an improve reinforcement type well head sieve of borehole operation safety, the entrance point of ore deposit drop shaft is located down to the well head sieve, wherein the well head sieve includes sieve girder and sieve carrier bar, sieve carrier bar and sieve girder both ends are all fixed in the reinforcement concrete wall, adjacent sieve carrier bar is parallel to each other, the sieve girder is located sieve carrier bar top, and be connected with the sieve carrier bar, adjacent sieve girder is parallel to each other, and the vertical projection of sieve girder intersects with the vertical projection of sieve carrier bar and is network structure, sieve girder periphery parcel has reinforced structure.

Optionally, the sieve carrier bar and the sieve main beam are both of an i-steel structure.

Further, reinforced structure includes reinforced structure and lower reinforced structure, goes up reinforced structure and passes through the solder welding at sieve girder upper surface, and lower reinforced structure passes through the solder welding at sieve girder lower surface.

Optionally, the upper reinforcing structure and the lower reinforcing structure are formed by drill rods with six-surface-shaped cross sections which are uniformly distributed, and one surface of each drill rod is attached to the surface of the sieve main beam.

Optionally, the upper reinforcing structure comprises first drill rods and second drill rods, the first drill rods and the second drill rods are arranged alternately, the cross-sectional size of each first drill rod is larger than that of each second drill rod, and each second drill rod is close to the edge of the upper surface of the screen main beam.

Optionally, the lower reinforcing structure includes third drill rods and fourth drill rods, the third drill rods and the fourth drill rods are arranged alternately, the cross-sectional size of the third drill rods is larger than that of the fourth drill rods, and the third drill rods are close to the edge of the lower surface of the sieve main beam.

Further, the vertical projections of the upper reinforcing structure and the lower reinforcing structure cover the vertical projection of the sieve main beam.

The utility model has the advantages that at least one of the following advantages is included;

1. through set up reinforced structure on the sieve girder, both guaranteed control bold through rate, simultaneously in withstand voltage, hit resistant, wear-resisting, corrosion resistance etc. each item technical performance aspect excellent for pass through well head sieve life is showing and is promoting.

2. The drill rod with the six-sided cross section is used as a reinforcing structure, the force is easier to unload than that of an I-shaped steel outer edge square structure, and the acting force applied to the sieve main beam is smaller than that of the impact force applied to the sieve main beam.

3. The problem of current well head sieve adopt well head main material pre-buried concrete placement is gone on is solved, lead to the sieve girder to expose completely outside, because the environment is moist in the pit, air humidity is big for main material antioxidant capacity reduces, and the corrosion rate accelerates, and the sieve damages with higher speed, and the well head sieve often bears the ore pressure simultaneously, smashes the impact, and main material deformation rate accelerates, appears warping and splitting, influences borehole operation safety by a wide margin.

Drawings

FIG. 1 is a schematic view of a reinforced wellhead screen configuration for improving safety of downhole operations;

FIG. 2 is a schematic view of a reinforced wellhead screen mounting configuration for improving safety of downhole operations;

FIG. 3 is a schematic view of a screen girder configuration;

figure 4 is a schematic cross-sectional view of a screen main beam;

figure 5 is a schematic view of an alternative cross-sectional configuration of the main beam of the screen;

labeled as: 1 is reinforced concrete wall, 2 is a mine-lowering chute, 3 is a sieve bearing beam, 4 is a sieve main beam, 5 is a locking anchor rod, 6 is an upper reinforcing structure, 601 is a first drill rod, 602 is a second drill rod, 7 is a lower reinforcing structure, 701 is a third drill rod, 702 is a fourth drill rod and 8 is solder.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail 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 scope of the invention.

As shown in fig. 1 to 3, a reinforced wellhead sieve for improving the safety of underground operation, the wellhead sieve is arranged at the inlet end of a mine chute 2, wherein the wellhead sieve comprises a sieve main beam 4 and a sieve bearing beam 3, both ends of the sieve bearing beam 3 and the sieve main beam 4 are fixed in a reinforced concrete wall 1, the adjacent sieve bearing beams 3 are parallel to each other, the sieve main beam 4 is positioned above the sieve bearing beam 3 and connected with the sieve bearing beam 3, the adjacent sieve main beams 4 are parallel to each other, the vertical projection of the sieve main beam 4 is intersected with the vertical projection of the sieve bearing beam 3 to form a net structure, and the periphery of the sieve main beam 4 is wrapped with a reinforced structure.

The purpose of design like this, through set up reinforced structure on the sieve girder, both guaranteed the control bold through rate, simultaneously it is excellent in the aspect of each item technical performance such as withstand voltage, resistant pounding, wear-resisting, corrosion resistance for drop shaft mouth sieve life is showing and is promoting. The problem of current well head sieve adopt well head main material pre-buried concrete placement is gone on is solved, lead to the sieve girder to expose completely outside, because the environment is moist in the pit, air humidity is big for main material antioxidant capacity reduces, and the corrosion rate accelerates, and the sieve damages with higher speed, and the well head sieve often bears the ore pressure simultaneously, smashes the impact, and main material deformation rate accelerates, appears warping and splitting, influences borehole operation safety by a wide margin.

Wherein, in order to improve the mechanical strength of sieve carrier bar and sieve girder, can select the I-steel structure.

The present application also provides a specific structure of the reinforcing structure as shown in fig. 4, wherein the reinforcing structure includes an upper reinforcing structure 6 and a lower reinforcing structure 7, the upper reinforcing structure 6 is welded to the upper surface of the screen main beam 4 by a welding material 8, and the lower reinforcing structure 7 is welded to the lower surface of the screen main beam 4 by a welding material 8. The upper reinforcing structure 6 and the lower reinforcing structure 7 are formed by drill rods with six-surface-shaped cross sections which are uniformly distributed, and one surface of each drill rod is attached to the surface of the sieve main beam 4.

In use, the drill rod with the six-sided cross section is used as a reinforcing structure, the force is easier to unload than that of an I-shaped steel outer edge square structure, and the acting force is smaller than that of the sieve main beam to which the impact force is completely applied. And meanwhile, welding flux is adopted for attaching and covering welding, so that the connection tightness between the upper and lower reinforcing structures and the sieve main beam can be greatly improved.

Meanwhile, as shown in fig. 5, the present application also provides a reinforcing structure of another structure, wherein the upper reinforcing structure 6 includes first drill rods 601 and second drill rods 602, the first drill rods 601 and the second drill rods 602 are alternately arranged, and the cross-sectional size of the first drill rods 601 is larger than that of the second drill rods 602, and the second drill rods 602 are close to the upper surface edge of the screen main beam 4. The lower reinforcing structure 7 comprises third drill rods 701 and fourth drill rods 702, the third drill rods 701 and the fourth drill rods 702 are alternately arranged, the cross-sectional dimension of the third drill rods 701 is larger than that of the fourth drill rods 702, and the third drill rods 701 are close to the edge of the lower surface of the screen main beam 4.

The used drill rod structures with different specifications enable the projection at the edge taper angle of the drill rod with large size to cover the projection at the edge taper angle of the drill rod with small size, so that secondary force unloading of impact force can be performed at the position where the projections are overlapped, and the sieve main beam is further protected.

In the field construction, in order to save cost, under the premise of meeting the physical characteristics of the tensile, compressive, torsional and deformation resistant lamps, the scrapped drill rods which are damaged but do not influence the physical and chemical properties can be selected to finish the reinforcement of the sieve girder.

The recycling of waste drill rods is realized, the residual value is exerted, meanwhile, due to the obvious improvement of the service life of the main beam of the sieve, the repeated investment problem of manual repair and materials is also obviously improved, the later-stage overhaul and maintenance cost of the sieve is reduced, the periodic repair time is saved, the safety risk problem caused by periodic repair is solved, the production efficiency of mines is improved, and the safety management risk is reduced.

In use, the vertical projections of both the upper and lower reinforcing structures 6, 7 overlay the vertical projections of the screen girders 4.

The purpose of design like this, in vertical projection coverage, go up reinforced structure and lower reinforced structure homoenergetic and carry out reasonable protection to the sieve girder, simultaneously in order to improve the intensity of whole ore deposit drop shaft down, bury underground in the ore deposit drop shaft and lock foot stock 5.

Claims (7)

1. The utility model provides an improve reinforcement type well head sieve of borehole operation safety, the entrance point of ore pass (2) is located down to the well head sieve, its characterized in that: well head sieve includes sieve girder (4) and sieve carrier bar (3), sieve carrier bar (3) and sieve girder (4) both ends are all fixed in consolidating concrete wall (1), and adjacent sieve carrier bar (3) are parallel to each other, sieve girder (4) are located sieve carrier bar (3) top to be connected with sieve carrier bar (3), adjacent sieve girder (4) are parallel to each other, and the vertical projection of sieve girder (4) intersects with the vertical projection of sieve carrier bar (3) and is network structure, and sieve girder (4) periphery parcel has reinforced structure.

2. A reinforced wellhead screen for improving safety of downhole operations as claimed in claim 1, wherein: the sieve bearing beam (3) and the sieve main beam (4) are both in I-shaped steel structures.

3. A reinforced wellhead screen for improving safety of downhole operations as claimed in claim 2, wherein: the reinforced structure includes reinforced structure (6) and lower reinforced structure (7), it welds at sieve girder (4) upper surface to go up reinforced structure (6) through solder (8), reinforced structure (7) are welded at sieve girder (4) lower surface through solder (8) down.

4. A reinforced wellhead screen for improving safety of downhole operations as claimed in claim 3, wherein: the upper reinforcing structure (6) and the lower reinforcing structure (7) are both formed by drill rods with six uniformly-distributed cross sections, and one surface of each drill rod is attached to the surface of the sieve main beam (4).

5. A reinforced wellhead screen for improving safety of downhole operations as claimed in claim 4, wherein: the upper reinforcing structure (6) comprises first drill rods (601) and second drill rods (602), the first drill rods (601) and the second drill rods (602) are alternately arranged, the cross section size of the first drill rods (601) is larger than that of the second drill rods (602), and the second drill rods (602) are close to the edge of the upper surface of the screen main beam (4).

6. A reinforced wellhead screen for improving safety of downhole operations as claimed in claim 5, wherein: the lower reinforcing structure (7) comprises third drill rods (701) and fourth drill rods (702), the third drill rods (701) and the fourth drill rods (702) are alternately arranged, the cross-sectional dimension of the third drill rods (701) is larger than that of the fourth drill rods (702), and the third drill rods (701) are close to the edge of the lower surface of the screen main beam (4).

7. A reinforced wellhead screen for improving safety of downhole operations as claimed in claim 6, wherein: the vertical projections of the upper reinforcing structure (6) and the lower reinforcing structure (7) cover the vertical projection of the sieve main beam (4).

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