CN210564529U

CN210564529U - Novel metal wall building template for vertical shaft

Info

Publication number: CN210564529U
Application number: CN201921362830.3U
Authority: CN
Inventors: 张品峰; 张鹏; 周柳涛; 蒋加峰; 皇甫国鑫; 赵静; 陈勇; 陈欢欢
Original assignee: China Coal No71 Engineering Co ltd; China Coal No 3 Construction Group Co Ltd
Current assignee: China Coal No71 Engineering Co ltd; China Coal No 3 Construction Group Co Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-05-19
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a novel vertical shaft metal wall building template, which comprises an annular template body; a group of hydraulic cylinders are uniformly arranged on the inner wall of the annular template body along the circumference, the hydraulic cylinders are vertically arranged upwards, and rollers are arranged at the top ends of piston rods of the hydraulic cylinders; an anchor rod is correspondingly embedded in the well wall above each hydraulic cylinder, each anchor rod is provided with guide wheels, and a suspension steel wire rope matched with each pair of guide wheels and the idler wheels is arranged between each pair of guide wheels and the corresponding idler wheel; the anchor rod is used as a reserved lifting point, when a new mould section well wall is built, the annular template body is firstly folded to be separated from the built well wall, the hydraulic cylinder is operated to extend out, and the annular template body is placed on a working surface to be leveled; an operator moves the suspension steel wire rope terminal downwards by a section height on the working hanging scaffold, fixes the suspension steel wire rope terminal on a reserved hanging point of the next section layer, moves the hydraulic cylinder downwards, and enables the suspension steel wire rope to be in a tensioning state, so that the problem of arrangement of suspension points of the large template is solved, and the problem of dependence of the large template on suspension equipment is also solved.

Description

Novel metal wall building template for vertical shaft

Technical Field

The utility model relates to a mine equipment technical field specifically is a novel vertical shaft metal template of building a wall.

Background

In the process of domestic mine construction, shaft digging and building engineering is throat engineering in the whole mine foundation construction period, and the shaft digging and building engineering of the vertical shaft generally adopts a mechanical operating line mainly comprising an umbrella drill, a large hoister, a large bucket, a large rock grab, a large integral metal template, a dump truck and an (explosion-proof) excavator, has dense mechanical matching systems, large selection of construction equipment and large use quantity of equipment, and becomes the basic characteristics and important guarantee for constructing the shaft digging and building engineering by adopting a new process and a new technology.

The vertical shaft sinking system is arranged in the cross section of a shaft and mainly comprises a lifting bucket, a hanging scaffold (stable rope) suspension point, an integral metal large template suspension point, a grab loader suspension point, a safety ladder suspension point, a blasting cable suspension point and the like; wind cylinders and wind and water pipelines tend to adopt a well wall fixing mode at present, and small cables can be attached to some suspension ropes; in some engineering design shaft arrangements, special high/low voltage power cable suspension points, concrete blanking pipe suspension points and the like are added according to the matching conditions of shaft sinking equipment. The suspension points are required to be arranged in a limited shaft section, the water levels at the wellhead of the shaft sinking system are also required to be reasonably arranged according to the standard requirements, the suspension points are required to be communicated in a straight line without barriers, the safety distance between each suspension point and a suspension facility is enough, the suspension points matched in a group are required to be uniformly and reasonably distributed, and the like, which is very difficult.

The traditional integral metal large template is generally suspended by three ropes or four ropes, and the suspending ropes are required to be uniformly and symmetrically distributed at the periphery of 120 degrees or 90 degrees close to the center point of a shaft wall in the cross section of the shaft; on the head sheave platform, as the large template suspension rope has larger load, the head sheave is generally suspended by a shaft sinking with the diameter of 1.05m, and the arrangement space is required to be larger; on the gangue turning platform and the sealing disc, a suspension rope is required to avoid the routes of an umbrella drill, a bucket, an excavator, a grab loader and a long material entering and exiting from a wellhead area; the suspension rope also needs to avoid frame opening structures such as a lifting opening of the sealing plate bucket, a pipeline access, an emergency ladder access and the like and a cover door opening and closing space; the suspension ropes should also be kept a sufficient distance from the tubing, cables, etc. of the suspension arrangement within the wellbore to prevent kinking.

The diameter of the conventional large template is 5-10 m, and the diameter of the large template adopted in the excavation engineering construction of the auxiliary shaft of the coal mine in the inner Mongolia Pojiang sea reaches phi 12.5 m; according to the geological conditions of the shaft and the comprehensive conditions of the section of the shaft, the height of a common large template section is 3.3-4 m, and the larger useful length is 4.5 m; on the other hand, with the widespread large-scale exploitation of stratum deep resources in coal mines and non-coal mines, the vertical shaft depth exceeding 1000m is no longer uncommon. The structure and the weight of the existing large template are continuously increased by combining the factors such as the diameter, the section height, the applied shaft depth and the like of the large template.

The traditional large template has the defects that the arrangement of steel wire rope suspension points is not flexible, and the positions of template ropes and other lifting suspension equipment and the positions of suspension ropes are difficult to be coordinated; along with the development trend that the engineering section of a vertical shaft is continuously increased, the depth of the shaft is continuously deepened, and the height of a shaft digging and building circulation section is also continuously increased, the terminal load of a large template suspension rope is continuously increased, and equipment such as a shaft sinking derrick, a large template suspension winch and a suspension head sheave is gradually close to the performance limit.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel vertical shaft metal template of building a wall, this template can solve self and suspend the problem of arranging in midair, also can avoid the reliance to suspending in midair equipment simultaneously.

The utility model provides a technical scheme that its technical problem adopted is:

a novel vertical shaft metal wall building template comprises an annular template body; a group of hydraulic cylinders are uniformly arranged on the inner wall of the annular template body along the circumference, the hydraulic cylinders are vertically arranged upwards, and rollers are arranged at the top ends of piston rods of the hydraulic cylinders; an anchor rod is correspondingly embedded in the well wall above each hydraulic cylinder, each anchor rod is provided with a guide wheel, and a suspension steel wire rope forming matching is arranged between each pair of guide wheels and the corresponding idler wheel.

Furthermore, the hydraulic cylinders are two-stage hydraulic cylinders, and the number of the hydraulic cylinders is four.

Furthermore, an anchor rod is buried in each section of well wall above the hydraulic cylinder.

The utility model has the advantages that the anchor rod is used as a reserved hanging point, when a new section of well wall is built, the annular template body is firstly folded to be separated from the built well wall, the hydraulic cylinder is operated to stretch out, and the annular template body is put down to the working surface for leveling; an operator moves the suspension steel wire rope terminal downwards by a section height on the working hanging scaffold, fixes the suspension steel wire rope terminal on a reserved hanging point of the next section layer, moves the hydraulic cylinder downwards, and enables the suspension steel wire rope to be in a tensioning state, so that the problem of arrangement of suspension points of the large template is solved, and the problem of dependence of the large template on suspension equipment is also solved.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

fig. 3 is a side view of the installation of the hydraulic cylinder of the present invention;

fig. 4 is an enlarged schematic view of the installation of the anchor rod of the present invention.

Detailed Description

With reference to fig. 1 to 4, the utility model provides a novel metal wall building formwork for a vertical shaft, which comprises an annular formwork body 1; a group of hydraulic cylinders 2 are uniformly arranged on the inner wall of the annular template body 1 along the circumference, preferably, the hydraulic cylinders 2 are two-stage hydraulic cylinders, and the number of the hydraulic cylinders is four; the hydraulic cylinder 2 is vertically arranged upwards, and the top end of a piston rod 3 of the hydraulic cylinder is provided with a roller 4; an anchor rod 6 is correspondingly embedded in each well wall 5 above each hydraulic cylinder, and preferably, each section of well wall above each hydraulic cylinder is embedded with an anchor rod; the anchor rod 6 is provided with guide wheels 7, and a suspension steel wire rope 8 which forms a fit is arranged between each pair of guide wheels and the idler wheel.

When the device is used, the anchor rod is used as a reserved lifting point, when a new mould section well wall is built, the annular template body is firstly folded to be separated from the built well wall, the hydraulic cylinder 2 is operated to extend out, and the annular template body is placed on a working surface to be leveled; an operator moves the terminal of the suspension steel wire rope 8 downwards by a section height on the working hanging scaffold, fixes the suspension steel wire rope on a reserved hanging point of the next section layer, and moves the suspension steel wire rope downwards to contract the hydraulic cylinder, so that the suspension steel wire rope is in a tensioning state, the problem of arrangement of suspension points of the large template is solved, and the problem of dependence of the large template on suspension equipment is also solved.

To better illustrate the advantages of the present invention, the present invention is now compared with the suspension of the conventional form.

The suspension statistical calculation of the traditional template is shown in Table 1

TABLE 1

To the utility model discloses a hang in midair and carry out the analysis:

firstly, taking the height of a digging and building section with the effective length of a suspension steel wire rope being 5 times as an example, according to 22 hours of digging and building cycle operation time, the interval of pre-anchoring rod remaining lifting points of each layer of well wall from construction arrangement to application is 110 hours, and the strength of common concrete in three days can reach 50% -70% of the designed strength.

Taking the template with the diameter phi of 8.0m and the section height of 4.5m in the table 1 as an example, the template is suspended by four points, and the load of a single suspension point is as follows:

（ 33t＋8.2t＋0.7t*4）9.81/4＝ 106.81 KN

in the formula: 0.7t 6 is the estimated suspension cylinder column weight.

The concrete bearing stress reaches about 17 MPa according to the effective depth 200mm of the anchor rod penetrating into the concrete wall. The well wall concrete is considered according to the strength of C40, and can bear the stress of about 20 MPa when the strength reaches 50 percent, thereby meeting the requirement.

Secondly, a short-section double-strand steel wire rope is adopted to manufacture the suspension steel wire rope, a 18 multiplied by 7+ FC-24-1770 steel wire rope is selected, the breaking tension is 405428N, and the safety coefficient of the steel wire rope is as follows:

2 × 405428N/106.81KN is more than 7.6 and the safety coefficient of the steel wire rope meets the requirement.

And thirdly, the round steel with the diameter of 40mm is adopted to manufacture the hoisting point anchor rod, the shear stress of the anchor rod reaches 83.8 MPa, and the requirement is met.

With respect to cost:

taking a large template with the diameter phi of 8.0m and the section height of 4.5m in the table 1 as an example, the template is measured by four-point suspension and the depth of a well bore of 800 m.

The traditional template needs 4 sinking winches of 16 t; 4 head sheaves are hung with the diameter of 1.05 m; four ropes of 18X 7+ FC-36-1770 type steel wires are required, the total weight of the ropes being 18.2 t. The template of the utility model does not need a sinking winch and a suspension head sheave, thus reducing and saving the cost of the stable twisting foundation concrete, the head sheave beam and the equipment; the total number of the round steel hoisting point anchor rods is 700, and the total weight of the steel is 2.56 t.

In terms of construction operation:

when the traditional template is operated, ground equipment operators and underground template collecting and releasing personnel are needed; and the utility model discloses the template need receive and release personnel at work platform sling adjustment hoisting point personnel, template in the pit. Although both the two can be arranged by the constructors in the wall building link without special increase; but in the aspect of the construction operation cooperation, the utility model discloses personnel concentrate during the template operation, are convenient for contact the commander, and are efficient.

In the existing vertical shaft digging and building engineering construction with high mechanized operation, the adoption of the integral metal large template for building the concrete shaft wall is an important ring in the short-section digging and building rapid cycle operation of the vertical shaft. Under the development trend of large-diameter (ultra) deep vertical shaft and large-section high-excavation and building construction of a shaft, how to further optimize and innovate the shaft construction system arrangement and adapt to the development requirement and liberate the construction production capacity is an important subject to be researched. The utility model discloses promptly stand to explain the fundamental restriction factor to traditional big template, it is very meaningful to impel vertical construction technique and technology change, has the value of impelling research implementation achievement very much.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the invention is not limited to the embodiments described herein, but is capable of other embodiments according to the invention, and may be used in various other applications, including, but not limited to, industrial. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims

1. A novel metal wall building template for a vertical shaft comprises an annular template body and is characterized in that a group of hydraulic cylinders are uniformly arranged on the inner wall of the annular template body along the circumference, the hydraulic cylinders are vertically arranged upwards, and rollers are arranged at the top ends of piston rods of the hydraulic cylinders; an anchor rod is correspondingly embedded in the well wall above each hydraulic cylinder, each anchor rod is provided with a guide wheel, and a suspension steel wire rope forming matching is arranged between each pair of guide wheels and the corresponding idler wheel.

2. The novel metal walling template for the vertical shaft according to claim 1, wherein the hydraulic cylinders are two-stage hydraulic cylinders, and the number of the hydraulic cylinders is four.

3. The novel metal walling template for the vertical shaft according to claim 1, wherein an anchor rod is embedded in each section of the shaft wall above the hydraulic cylinder.