CN213571944U - Suspension type slip form for one-step forming of large-inclination trash rack - Google Patents

Abstract

The utility model discloses a suspension type slip form for one-step forming of a large-dip-angle trash rack, which comprises a die body system and a suspension system; the die body system comprises trash rack-shaped templates spliced by panels, and ribs and support trusses are arranged among the templates; a working platform is laid on the upper surface of the die body system; a hydraulic control system is arranged on the working platform; the suspension system comprises a suspension support frame with a truss structure, and the suspension support frame is fixed on the rock mass surface of the trash rack platform through anchor bars and steel supports; a plurality of groups of suspension pull rods are connected below the suspension support frame, and the bottom ends of the suspension pull rods are connected with the truss of the die body system through hydraulic jacks; the suspension angle of the suspension pull rod is consistent with the inclination angle of the trash rack; a concrete conveying system is arranged above the die body along the installed steel bars and the track; a defect eliminating and maintaining system is connected below the die body; the method has the characteristics of binding and positioning the reinforcing steel bars at one time, completing the installation of the grid groove and the track at one time, canceling the second-stage concrete construction and utilizing the suspension type slip form for one-time forming.

Description

Suspension type slip form for one-step forming of large-inclination trash rack

Technical Field

The utility model belongs to power station water inlet construction field, in particular to big inclination trash rack one shot forming suspension type slipform technique.

Background

At present, the traditional construction process of the large-inclination-angle trash rack at the water inlet of the hydropower station comprises the following steps: firstly, carrying out first-stage grid pier reinforced concrete construction in a layered mode, simultaneously reserving grid grooves and track embedded parts, then carrying out grid groove and track installation, and finally carrying out second-stage grid groove concrete construction. The traditional construction process has more construction procedures, relatively longer construction period, relatively higher engineering cost and larger safety risk. The system analysis mainly has the following outstanding defects and shortcomings:

1. need set up the scaffold, manpower, material resources invest greatly: the scaffold is required to be installed as a working platform in the process of first-stage reinforced concrete lining, grid groove, trash cleaning machine rail installation, second-stage grid groove lining and the like. And the inclined structure is inconvenient to lift, hoisting equipment is required to be matched, the investment of human resources and material resources is more, and the engineering cost is increased.

2. The concrete lining layer-by-layer construction has large construction quality control difficulty: whether reverse formwork or formwork is adopted, the concrete construction process and the engineering quality cannot be controlled very intuitively; whether the first-stage lining of the grid pier or the second-stage lining of the grid groove is adopted, the procedures of uniform warehousing, layered leveling, dense vibration and the like are difficult to operate, the construction joints are more, and the quality is difficult to effectively control. Meanwhile, the lining concrete can be demoulded after being forced, construction defects cannot be found at any time in the construction process, effective treatment cannot be timely achieved, effective maintenance cannot be timely implemented on the concrete, and the quality control difficulty is increased to a certain extent.

3. The construction procedure is complicated, the high-altitude operation is carried out, and the safety risk is large: scaffold is set up and removed on an inclined plane of 60 degrees, measurement paying-off and control are carried out, reinforcing steel bars are installed and reinforced, grid grooves and tracks are installed and corrected, concrete formwork erection and formwork removal are frequently carried out, high-altitude operation is carried out, safety protection and safety protection workload are large, safety management difficulty is large, and safety risks are remarkably increased. (poor scaffolding)

4. The construction process is many, and construction speed is limited, and engineering cost is high: the construction processes of first-stage reinforced concrete construction, pre-buried grid grooves, track embedded parts and installation, second-stage concrete construction, repeated installation and disassembly of templates and the like are frequently alternated, and the construction speed is severely restricted. Meanwhile, the hoisting equipment occupies for a long time, and the construction cost is obviously improved.

In conclusion, the rapid construction device for one-step forming of the large-inclination trash rack, which has the advantages of simple structure, convenience in mounting and dismounting, controllable cost, simple and direct process, safety and reliability, can visually monitor the concrete lining process and timely maintain and repair concrete construction defects, becomes a problem to be solved urgently by engineering technicians in the field.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a purpose of the patent technology is in order to effectively solve the key problem that exists in the big inclination trash rack traditional work progress, design and provide a simple structure, the ann tears open conveniently, the cost is controllable, the process is simple and direct, safe and reliable, can monitor the concrete lining process, and can in time maintain and repair the concrete defect big inclination trash rack one shot forming suspended type slip form; the method has the characteristics of binding and positioning the reinforcing steel bars at one time, completing the installation of the grid groove and the track at one time, canceling the second-stage concrete construction and utilizing the suspension type slip form for one-time forming.

In order to realize the above design, the utility model adopts the following technical scheme: a suspension type slip form for one-step forming of a large-dip-angle trash rack comprises a die body system and a suspension system; the die body system comprises trash rack-shaped templates spliced by panels, and ribs and support trusses are arranged among the templates; a working platform is laid on the upper surface of the die body system; a hydraulic control system is arranged on the working platform; the suspension system comprises a suspension support frame with a truss structure, and the suspension support frame is fixed on the upper platform of the trash rack through anchor bars and steel supports; a plurality of groups of suspension pull rods are connected below the suspension support frame, and the bottom ends of the suspension pull rods are connected with the truss of the die body system through a hydraulic control system; the hanging angle of the hanging pull rod is consistent with the inclination angle of the trash rack.

Preferably, the template is matched with the trash rack groove and the trash remover track to slide; the trash rack groove and the trash remover rail are connected with the rock mass behind the trash rack through anchor rods and support tie anchor bars; the template is provided with a limiting device to offset the movement of the die body caused by the lateral pressure of the concrete.

Preferably, the hydraulic control system comprises a control console and a jack connected with the die body system; the jack connects the die body system with the lower end of the suspension pull rod.

Preferably, the pull rod of the jack is provided with an automatic leveler.

Preferably, the upper surface of the suspension support frame is provided with a receiving hopper; the bottom of the receiving hopper is connected with a distributor through a chute, and the distributor is connected with the upper surface of the die body system.

Preferably, the distributor is connected with a plurality of distributing grooves, and the distributing grooves face to a plurality of filling areas of the template.

Preferably, a fence and a safety net are arranged around the working platform and the auxiliary plate.

Preferably, gaps are reserved between the template and the trash rack groove and between the template and the trash remover rail so as to facilitate sliding.

Preferably, a defect eliminating and maintaining system is connected below the die body system.

Preferably, the defect-eliminating maintenance system comprises an auxiliary disc hung on the lower surface of the working platform, a water pipe is arranged on the auxiliary disc, and one end of the water pipe is connected with the sprayer.

The utility model provides a big inclination trash rack one shot forming suspension type slipform's beneficial effect as follows:

1. simple structure, the ann tears the convenience open, has reduced loaded down with trivial details scaffold frame, the procedure such as template ann tears open, and engineering cost is low, and construction speed is fast, guarantees concrete continuous construction.

2. The reinforcing steel bars are bound in place at one time, so that the quality control is facilitated; the track is installed once, which is beneficial to the precision control; the second-stage concrete is cancelled, the construction process is simplified, the construction process is optimized, the construction period is greatly shortened compared with the traditional process, and the engineering cost is controllable.

3. The concrete construction process is visual and controllable, the concrete is placed in a warehouse, leveled and vibrated in a certain range on the upper opening of the template, the operation is convenient and easy to control, the uniform placement, layered leveling and dense vibration can be fully ensured, and the inherent quality of the concrete is facilitated.

4. The demoulding accords with the concrete strength pouring rule and has no construction joint. The demolding strength of the concrete is controlled to be 0.1-0.3 MPa, the concrete is still in the initial setting period, the pouring quality of the concrete can be timely checked after demolding, and surface defects can be timely treated, so that the surface quality can be guaranteed, and the surface attractiveness can be guaranteed; the watering maintenance is carried out on the auxiliary plate in time, continuously and uniformly, and the concrete strength is also ensured.

5. The working environments of the suspension support frame, the working disc, the auxiliary disc and the like are totally closed, so that the working environment is improved, and a plurality of potential safety hazards are reduced; the labor organization is simple, and the safe construction is guaranteed.

Drawings

Fig. 1 is a schematic plan view of a suspended slip form of the present invention.

Fig. 2 is a schematic view of a vertical section structure of a suspended sliding form according to the present invention.

The reference numbers in the figures are: the device comprises a trash rack platform 1, anchor bars 2, steel supports 3, steel bars 4, erection bars, a tie bar system 5, anchor rods 6, a trash rack groove 7, a trash remover track 8, support tie bars 9, a suspension support frame 10, an auxiliary disc 11, a working platform 12, a jack 13, a suspension pull rod 14, a control console 15, an automatic leveler 16, a template 17, a distributor 18, a distributor groove 19, a water pipe 20, a slide pipe 21 and a receiving hopper 22.

Detailed Description

Specific embodiments are provided below in connection with the accompanying drawings.

As shown in fig. 1 to 2, a suspension type slip form for one-step forming of a large-inclination trash rack comprises a mold body system and a suspension system; the die body system comprises templates 17 in the shape of trash racks formed by splicing panels, and ribs and supporting trusses are arranged among the templates 17; a working platform 12 is laid on the upper surface of the die body system; a hydraulic control system is arranged on the working platform 12; the suspension system comprises a suspension support frame 10 with a truss structure, and the suspension support frame 10 is fixed on the upper platform 1 of the trash rack through anchor bars 2 and steel supports 3; a plurality of groups of suspension pull rods 14 are connected below the suspension support frame 10, and the bottom ends of the suspension pull rods 14 are connected with the truss of the die body system through hydraulic jacks; the hanging angle of the hanging pull rod 14 is consistent with the inclination angle of the trash rack.

Preferably, the suspension stays 14 are provided in multiple sets of tie rods, each set comprising 2 scaffold steel tubes of 48mm diameter.

Preferably, the template 17 is matched with the trash rack groove 7 and the trash remover rail 8 to slide; the trash rack groove 7 and the trash remover rail 8 are connected with the rock mass behind the trash rack through anchor rods 6 and support anchor bars 9; the form 17 is provided with a stop means to counteract the movement of the mould body caused by the lateral pressure of the concrete.

Preferably, the hydraulic control system comprises a control console 15 and jacks 13 connected to the die body system; the jack 13 connects the die body system with the lower end of the suspension pull rod 14; the suspension pull rods 14 are movably connected with the track and the reinforcing anchor bars 2 of the reinforcing steel bars 4 at certain intervals so as to ensure that the suspension angle is kept unchanged.

Preferably, the pull rod of the jack 13 is provided with an automatic leveler 16; the jack 13 is an HM-100 type hydraulic special jack, and the console 15 is an YKT-36 type hydraulic console 15.

Preferably, the receiving hopper 22 is installed on the upper surface of the suspension support frame 10; the bottom of the receiving hopper 22 is connected with the distributor 18 through a chute 21, and the distributor 18 is connected with the upper surface of the die body system; the chute 21 is provided with 2 times and is respectively connected with 2 distributors 18.

Preferably, several distributing channels 19 are connected to the distributor 18, the distributing channels 19 facing towards the filling areas of the formwork 17.

Preferably, a fence and a safety net are provided around the working platform 12 and the auxiliary plate 11.

Preferably, a gap of 20mm is reserved between the template 17 and the trash rack groove 7 and the trash remover rail 8 so as to facilitate sliding.

Preferably, the lower surface of the die body system is connected with a defect eliminating and maintaining system.

Preferably, the defect-eliminating maintenance system comprises an auxiliary disc 11 hung on the lower surface of the working platform 12, a water pipe 20 is arranged on the auxiliary disc 11, and one end of the water pipe 20 is connected with the sprayer.

Preferably, when the suspension type slip form for once forming of the trash rack with a large inclination angle is installed and constructed for use, the method comprises the following steps:

s1, manufacturing and installing the suspension support frame 10: manufacturing a suspension support frame 10 on the upper surface of an upper platform of the trash rack by using a steel truss structure, fixing the suspension support frame 10 on the upper platform of the trash rack by using anchor bars 2, and adding a certain number of steel supports 3 to ensure the strength and rigidity of the suspension support frame 10;

s2, binding of steel bars 4: according to the design requirements of the trash rack, the reinforcing steel bars 4 are bound in place from bottom to top and are firmly connected with the erection bars, the tie bar system 5 and the anchor rods 6, and the anchor rods 6 are driven into rock bodies behind the trash rack;

s3, installing a rail: simultaneously binding the reinforcing steel bars 4, synchronously installing a trash rack groove 7 and a trash remover track 8 according to design requirements, arranging a certain number of supporting anchor pulling bars 9, and connecting the trash rack groove 7 and the trash remover track 8 with an anchor rod 6 through the supporting anchor pulling bars 9; the top of the track may be connected to a suspended support frame 10 for added strength and stability;

s4, die body manufacturing: assembling 6mm steel plates or shaped steel templates 17 into a trash rack-shaped mold according to design requirements in a manufacturing workshop, ribbing by using section steel, and arranging a support truss in the templates 17; checking and accepting after pre-assembling, numbering and disassembling for transportation after being qualified; the height of the template 17 is set to be 1.2-1.5 m;

s5, die body installation: firstly, temporarily fixing the auxiliary disc 11, and then paving a steel plate or a template 17 on the upper surface of the template 17 to manufacture a working platform 12; the jack 13 is then bolted to the die body system; fixing the upper end of a suspension pull rod 14 on a suspension support frame 10, penetrating the lower end of the suspension pull rod 14 into a jack 13, connecting a hydraulic oil pipe with the jack 13 and a control console 15, and connecting a power supply; after all the systems are installed, performing a die body no-load test, and installing the automatic leveler 16 through measurement;

s6, installing a concrete conveying system: after the die body is in place, arranging a receiving hopper 22 on a suspension support of the trash rack platform 1, arranging a distributor 18 and a distributor groove 19 on the working platform 12, arranging a water pipe 20 on the auxiliary disc 11, and suspending a blanking chute barrel or chute 21 by using a steel wire rope;

s7, concrete construction: transporting the concrete to a receiving hopper 22 on the trash rack platform 1, slipping the concrete into a distributor 18 on the working platform 12 through a chute 21 or a slipping barrel, symmetrically warehousing and uniformly warehousing the concrete to a filling area of the template 17 by utilizing a material-distributing groove 19, and uniformly vibrating in layers by utilizing a flexible shaft vibrating rod; the principles of sequential warehousing, layered leveling, uniform vibration and synchronous sliding lifting are strictly executed;

s8, sliding and lifting the sliding die: the concrete primary pouring and the slip form primary sliding lifting are carried out according to the following six steps:

1. pouring concrete or mortar with the thickness of 3-5cm and semi-aggregate;

2. pouring a second layer of concrete according to the layering thickness of not more than 30 cm;

3. when the casting thickness reaches 70cm, sequentially sliding and lifting for 1-2 strokes to cast a third layer of concrete and a fourth layer of concrete, and checking whether the strength of the demolded concrete is proper;

4. sliding and lifting for 2 strokes after the fourth layer is poured, and continuously pouring the fifth layer of concrete;

5. after the fifth layer of concrete is poured, sliding and lifting for 4-6 strokes, and pouring a sixth layer of concrete;

6. after the sixth layer of concrete is poured, the sixth layer of concrete slides and rises for 8-10 strokes, and if no abnormal phenomenon exists, normal pouring and sliding and rising can be carried out;

wherein the concrete pouring adopts layered symmetrical pouring, and the layered thickness is not more than 30 cm; the sliding mode is slowly lifted for the first time, in the process, a hydraulic device, a die body structure and related facilities are comprehensively and systematically checked under the load condition, problems are found and processed, and normal sliding can be carried out after all the sliding modes are normal; when the concrete is shifted to normal sliding lift, continuous operation is kept, an operator observes the surface quality of the demolded concrete, and proper sliding lift time and sliding lift speed are determined by combining comprehensive tests such as concrete characteristics, feeding strength, environment temperature and demolding strength; continuously observing and recording the deformation condition of the track in the sliding and lifting process; the concrete is continuously supplied in the slip-form process;

carrying out a concrete solid solidification test for 4-6 hours before concrete pouring: the test criteria are as follows:

the demolded concrete surface should not have the phenomena of flowing and pulling crack, the depth of the finger print is less than 1mm after being pressed, and the finger print can be smeared by a trowel; if the surface of the demoulded concrete is flat, finishing treatment can not be carried out; if the surface of the demolded concrete has defects, the surface of the concrete is required to be repaired immediately;

s9, concrete scarcity eliminating and curing: after demoulding, an operator works on the auxiliary disc 11, and performs primary pulp repair on the concrete by using the water pipe 20 or the curing agent, and timely cleans the track, and takes reinforcement and protection measures if necessary.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims (10)

1. The utility model provides a big inclination trash rack one shot forming suspension type slipform which characterized in that: comprises a die body system and a suspension system; the die body system comprises templates (17) in the shape of trash racks formed by splicing panels, and ribs and supporting trusses are arranged among the templates; a working platform (12) is laid on the upper surface of the die body system; a hydraulic control system is arranged on the working platform (12); the suspension system comprises a suspension support frame (10) with a truss structure, wherein the suspension support frame (10) is fixed on the rock mass surface of the trash rack platform (1) through anchor bars (2) and steel supports (3); a plurality of groups of suspension pull rods (14) are connected below the suspension support frame (10), and the bottom ends of the suspension pull rods (14) are connected with a truss of the die body system through hydraulic jacks; the hanging angle of the hanging pull rod (14) is consistent with the inclination angle of the trash rack.

2. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: the template (17) is matched with the plurality of trash rack grooves (7) and the trash remover track (8) to slide; the trash rack groove (7) and the trash remover rail (8) are connected with the rock mass behind the trash rack through anchor rods (6) and support anchor tie bars (9).

3. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: the hydraulic control system comprises a control console (15) and a jack (13) which are connected with the die body system; the mould body system is connected with the lower end of the suspension pull rod (14) by a jack (13); the number of the jacks (13) is multiple, and the jacks (13) are arranged beside the trash remover track (8).

4. The large inclination trash rack one-shot forming suspended slipform of claim 3, characterized in that: and an automatic leveler (16) is arranged on a pull rod of the jack (13).

5. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: a receiving hopper (22) is arranged on the upper surface of the suspension support frame (10); the bottom of the receiving hopper (22) is connected with a distributor (18) through a chute (21), and the distributor (18) is connected with the upper surface of the die body system.

6. The large inclination trash rack one-shot forming suspended slipform of claim 5, characterized in that: the distributor (18) is connected with a plurality of distributing grooves (19), and the distributing grooves (19) face a plurality of filling areas of the template (17).

7. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: and fences and safety nets are arranged around the working platform (12) and the auxiliary disc (11).

8. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: gaps are reserved among the template (17), the trash rack groove (7) and the trash remover track (8) so as to facilitate sliding.

9. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: and a defect eliminating and maintaining system is connected below the die body system.

10. The large inclination trash rack one-shot forming suspended slipform of claim 9, characterized in that: the defect eliminating maintenance system comprises an auxiliary disc (11) hoisted on the lower surface of the working platform (12), a water pipe (20) is arranged on the auxiliary disc (11), and one end of the water pipe (20) is connected with the sprayer.

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