CN201610511U - High-speed railway roadbed shoulder concrete construction sliding formwork trolley - Google Patents
High-speed railway roadbed shoulder concrete construction sliding formwork trolley Download PDFInfo
- Publication number
- CN201610511U CN201610511U CN2010201211789U CN201020121178U CN201610511U CN 201610511 U CN201610511 U CN 201610511U CN 2010201211789 U CN2010201211789 U CN 2010201211789U CN 201020121178 U CN201020121178 U CN 201020121178U CN 201610511 U CN201610511 U CN 201610511U
- Authority
- CN
- China
- Prior art keywords
- speed railway
- sliding formwork
- concrete construction
- shoulder protector
- construction sliding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000009415 formwork Methods 0.000 title claims abstract description 25
- 230000001012 protector Effects 0.000 claims description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nMzAwcHgnIGhlaWdodD0nMzAwcHgnIHZpZXdCb3g9JzAgMCAzMDAgMzAwJz4KPCEtLSBFTkQgT0YgSEVBREVSIC0tPgo8cmVjdCBzdHlsZT0nb3BhY2l0eToxLjA7ZmlsbDojRkZGRkZGO3N0cm9rZTpub25lJyB3aWR0aD0nMzAwLjAnIGhlaWdodD0nMzAwLjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8dGV4dCB4PScxMzguMCcgeT0nMTcwLjAnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6NDBweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiMzQjQxNDMnID5GPC90ZXh0Pgo8dGV4dCB4PScxNjUuNicgeT0nMTcwLjAnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6NDBweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiMzQjQxNDMnID5lPC90ZXh0Pgo8L3N2Zz4K data:image/svg+xml;base64,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 [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000002547 anomalous Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000001788 irregular Effects 0.000 abstract description 2
- 230000001105 regulatory Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000005755 formation reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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Abstract
The utility model discloses a device for construction of roads and bridges, in particular to a high-speed railway roadbed shoulder concrete construction sliding formwork trolley. The high-speed railway roadbed shoulder concrete construction sliding formwork trolley comprises a support frame erected on the ground and is characterized in that a cross beam is horizontally movably erected on the support frame, a support leg positioned at the lower part of a shoulder and a support walking mechanism positioned in a cable trough are respectively downwards vertically arranged at two ends of the cross beam, a template is fixed on the cross beam in a tilted manner through a pin shaft, and the middle part and the lower part are in hanging connection with regulating devices; and the cross beam is connected with a hoist which is communicated with a generator set. The utility model mainly aims at meeting the concrete construction of the high-speed railway roadbed shoulder, replacing the manual means with the mechanical means and solving the problems of slow construction speed, low efficiency and irregular formation of the construction of the roadbed shoulder in the past.
Description
(1) technical field
The utility model relates to a kind of construction of road bridges equipment, particularly a kind of high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis.
(2) background technology
At present, in roadbed shoulder protector concrete construction engineering, adopting simple and easy template to carry out the position mostly limits, again by manually carrying out concreting, because the use of simple and easy template needs artificial dismounting, Gu and shape weak effect, limited the use of concreting machinery, and needed to drop into great amount of manpower, so that artificial intensity is big, construction is slow, efficient is low, forming effect is poor.
(3) summary of the invention
The utility model provides a kind of high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis simple in structure, easy to use in order to remedy the deficiencies in the prior art.
The utility model is achieved by the following technical solution:
A kind of high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis, comprise and be erected at ground support frame, its special character is: horizontal anomalous movement has set up crossbeam on the support frame, the crossbeam two ends are provided with the supporting leg that is positioned at the shoulder protector bottom respectively downward vertically and are positioned at the support walking mechanism of cable channel, template tilts to be fixed on the crossbeam by bearing pin, and hangs even adjusting device with the bottom in the middle; Crossbeam is connected with the hoist engine that is communicated with generating set.
The utility model is provided with crossbeam to be erected at the support frame of shoulder protector top at its surface level, with formwork hoisting on crossbeam, template stability that strengthens concrete pouring and enhancing whole structure be set; Make crossbeam connect actuating unit---be communicated with the hoist engine of generating set, drive crossbeam by supporting leg and the operation of supporting walking mechanism and move, and then drive the template operation, the realization mechanized construction effectively reduces artificial quantity, improves efficiency of construction.
More excellent scheme of the present utility model is:
Described support walking mechanism end is provided with road wheel, and road wheel is connected on the track that is positioned at cable channel, and directive wheel is installed on the road wheel.Track is set in cable channel, effectively utilizes construction space, and lower the frictional resistance of crossbeam by the rotation operation of road wheel.
Described supporting leg is a drawing and pulling type, and be provided with in its underpart can rotating spring straddle.The setting of supporting leg is mainly used in the protection of roadbed and cutting, so considering template need temporarily pack up supporting leg to supporting leg earlier and be set to drawing and pulling type when crossing culvert, irrigation canals and ditches, in the spring straddle of its underpart owing to press close to shoulder protector, for making it adapt to inclined-plane and the two kinds of forms in plane, it is set to pivotal, so that the converter mounting position.
Described template end is provided with and is positioned at the rubber strip that the sleeve pipe upper end is provided with spring.For guarantee template terminal with shoulder protector contact seal and stability, at its end rubber strip is set, and mounting spring places in the sleeve pipe on making rubber strip, when the contact surface out-of-flatness, is convenient to automatic adjustment, and does not influence the state of formwork integral.
Described adjusting device is a screw mandrel; Described crossbeam is i iron, channel-section steel, angle steel structure.
Described support frame is provided with the operating desk of guardrail and control actuating unit and power switch; Set up ceiling on the described guardrail, illuminating lamp is set on the ceiling.The simplicity that be to keep work, setting operation platform on support frame, and protect by guardrail; Outdoor construction is convenient in the setting of ceiling more, and illuminating lamp then is for convenience of night time operation.
Main purpose of the present utility model is to satisfy the concrete construction of high-speed railway subgrade shoulder protector, replaces manually with mechanization, solves that roadbed shoulder protector speed of application was slow in the past, efficient is low, irregular problem is shaped.The maximum bright spot of this design is the template walking of can independently sliding, and saves great amount of manpower, has realized the peak use rate of concrete tank, and speed of application and construction quality all are greatly improved.In addition this cover sliding formwork chassis also has following characteristics:
(1) low cost.Raw material mainly are shaped steel, and manufacturability is strong, and cost of manufacture is low;
(2) highly versatile.This template supporting leg is designed to adjustable type, is common to subgrade protection structure and cutting safeguard structure, can significantly reduce the kind of template, thereby reaches the low effect that drops into high repayment;
(3) handled easily.Can finish exercises by operating desk control;
(4) effect is obvious.The design drives template by the traction chassis and slides, and template is good stability when cast, and through actual fluid concrete, whole structure is good.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an A-A face generalized section shown in Figure 1;
Fig. 3 is a construction flow chart of the present utility model.
Among the figure, 1 support frame, 2 crossbeams, 3 supporting legs, 4 templates, 5 adjusting devices, 6 generating sets, 7 hoist engines, 8 road wheels, 9 tracks, 10 directive wheels, 11 spring straddle, 12 rubber strips, 13 guardrails.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises and is erected at ground support frame 1, horizontal anomalous movement has set up crossbeam 2 on the support frame 1, crossbeam 2 two ends are provided with supporting leg 3 that is positioned at the shoulder protector bottom and the support walking mechanism that is positioned at cable channel respectively downward vertically, template 4 tilts to be fixed on the crossbeam by bearing pin, and hangs even adjusting device 5 with the bottom in the middle; Crossbeam 2 is connected with the hoist engine 7 that is communicated with generating set 6; Described support walking mechanism end is provided with road wheel 8, and road wheel 8 is connected on the track 9 that is positioned at cable channel, and directive wheel 10 is installed on the road wheel 8; Described supporting leg 3 is a drawing and pulling type, and be provided with in its underpart can rotating spring straddle 11; Described template 4 ends are provided with and are positioned at the rubber strip 12 that the sleeve pipe upper end is provided with spring; Described adjusting device 5 is a screw mandrel; Described crossbeam 2 is i iron, channel-section steel, angle steel structure; Described support frame 1 is provided with the operating desk of guardrail 13 and control actuating unit and power switch; Set up ceiling on the described guardrail 13, illuminating lamp is set on the ceiling.
Mainly introduce its construction sequence and technological process below.
One, preparation of construction
1. technology is prepared
Carry out the drafting of overall assembling drawing according to the mentality of designing of each system, carry out the drafting of each system authority then, difficult point is in the drafting of walking mechanism and peg mechanism.That confides a technological secret after drawing is determined writes again, and at the making and the handling characteristics of sliding formwork chassis, tells somebody what one's real intentions are emphasis in the making and last debugging of template.
2. material is prepared
After drawing protract is finished, propose the charging plan, comprise section bar, sheet material, hoist engine 7, generating set 6, idler wheel mechanism etc.; According to the manufacture craft requirement, coordinate out two of manual electric welding machines then, oxygen-acetylene is set up a separatist regime by force of arms a cover, one one of sanding machine, one one of polishing machine.And notice blanking workshop is with plate shearing machine lower bolster panel (the face plate profiles size is greater than drawing real size 2mm) and other regular sheet materials, and form surfacing must be handed over and mill plate teams and groups and mill the limit, and system must be bored with drilling machine in the hole on all component.
3. assembly precision and the mutual coordination performance in order to guarantee a whole set of sliding formwork chassis, this cover sliding formwork chassis adopt the special messenger to bore with system, people master dress, people master weldering, people master mill, people master inspection.
Two, construction requirement
1. sliding formwork chassis
(1) track 9 is installed: more than the track 9 leading 20m of installation;
(2) must check chassis size and location situation before the concreting, build the 40m that whenever advances in the process and must check once;
(3) three conditions must confirming before the chassis traveling: a. concrete initial set; B. no any obstruction in the stroke; C. front track is installed;
(4) the each distance travelled 7m that is preferably of chassis;
(5) want during the chassis traveling first click switch to confirm to continue again to move ahead after smooth and easy, note control speed.
2. concreting
(1) pre-pipe laying of drain hole and settlement joint are installed: the outer groove is with the shoulder protector gradient, and indentation 1cm;
(2) notice that concrete tamping is closely knit, establish the special messenger when building and on the job platform of chassis lower edge, knock inspection;
(3) build finish after by artificial earlier with actinal surface on the floating concrete of wood float, roughly find out 4% domatic; After the chassis slippage, utilize the little chassis of finishing before final set, to receive flat troweling, make linear and carry out domatic finishing with plasterer's trowel and guiding ruler;
(4) special timber wedge is adopted in the draining aperture, and typing is trimmed to shape before concrete final set;
(5) spray curing agent after the concrete final set.
Three, construction flow chart (as shown in Figure 3)
Four, structure design
1. the design of support frame 1
After tentatively examining record single travel distance, determine that support frame 1 length is 11 meters, width is 2.2 meters, and sidepiece master material is selected 16I for use, and flank and two ends master's material are selected 16I for use.Examine record again and purchase hoist engine 7 base size and the grouting spaces of establishing thereof, choose the concrete size of cross rib and perpendicular rib.
(2) design of template 4
Be the requirement of the fluid concrete face of satisfying the demand, design template 4 width are 1.05 meters, and length is 10 meters, and panel is selected the 6mm steel plate for use, the limit support and anyhow rib select 10mm steel plate and 8I respectively for use.
(3) design of supporting leg 3 and walking mechanism:
Consider that the sliding formwork chassis need temporarily pack up supporting leg 3 earlier when crossing culvert, irrigation canals and ditches, so must be arranged to drawing and pulling type to supporting leg 3,12I*420mm is selected on top for use, and the bottom is selected 10I*700mm for use, and maximum pull distance is 280mm, and supporting leg 3 spacings are elected 2m as.Lower springs straddle 11 also needs to be chosen as can be helicoid, can guarantee two kinds of postures of conversion like this.The design of walking mechanism supporting leg, track 9 is arranged in the cable channel, adopts 63 angle steel.Select road wheel 8 and walking supporting leg spacing according to track 9 then.
(4) design of adjusting device 5
Poured into a mould shoulder protector in order to guarantee that the sliding formwork chassis is crossed over, must lift from template 4 when carrying out next section concrete cast and water the shoulder protector face, select for use template 4 bearing pin to be fixed on the support frame 1 by junction plate, template 4 middle parts and bottom are adopted and can be regulated the leading screw extension even, so both can make things convenient for lifting, the adjusting of template 4, can guarantee the stability of template 4 when cast again.
(5) design of guardrail 13 and ceiling
Guardrail 13 is arranged on the support frame 1, and connected mode is selected drawing and pulling type, fixedly selects for use fixed thread to fix, and vertically adopts pipe, laterally adopts φ 16mm round steel.The bracing frame of ceiling is selected 30 angle steel for use, and plate is fixed on guardrail 13 supports with color steel watt, and connected mode is selected drawing and pulling type, fixedly selects for use fixed thread to fix.
The utility model is for satisfying the special-purpose sliding formwork chassis that the concrete construction of high-speed railway subgrade shoulder protector designs and produces.This product possesses multiple construction operation function, adopt standardized design and processing, optimized roadbed shoulder protector concrete construction process, started the beginning of roadbed shoulder protector concrete construction sliding-type template, satisfy Beijing-Shanghai express railway roadbed shoulder protector concrete pouring construction, can realize the mechanized construction of roadbed shoulder protector concrete structure, reduce artificial the time, improve efficiency of construction greatly.The shoulder protector construction profile rule that this equipment processes, attractive in appearance, neat can directly apply to the roadbed shoulder protector concreting of domestic and international high-speed railway.
Claims (8)
1. high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis, comprise and be erected at ground support frame (1), it is characterized in that: support frame (1) is gone up horizontal anomalous movement and has been set up crossbeam (2), crossbeam (2) two ends are provided with supporting leg (3) that is positioned at the shoulder protector bottom and the support walking mechanism that is positioned at cable channel respectively downward vertically, template (4) tilts to be fixed on the crossbeam (2) by bearing pin, and hangs even adjusting device (5) with the bottom in the middle; Crossbeam (2) is connected with the hoist engine (7) that is communicated with generating set (6).
2. high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis according to claim 1, it is characterized in that: described support walking mechanism end is provided with road wheel (8), road wheel (8) is connected on the track (9) that is positioned at cable channel, and directive wheel (10) is installed on the road wheel (8).
3. high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis according to claim 1 and 2, it is characterized in that: described supporting leg (3) is a drawing and pulling type, and be provided with in its underpart can rotating spring straddle (11).
4. high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis according to claim 1 and 2 is characterized in that: described template (4) end is provided with and is positioned at the rubber strip (12) that the sleeve pipe upper end is provided with spring.
5. high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis according to claim 1 and 2 is characterized in that: described adjusting device (5) is a screw mandrel.
6. high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis according to claim 1 and 2 is characterized in that: described crossbeam (2) is i iron, channel-section steel, angle steel structure.
7. high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis according to claim 1 and 2 is characterized in that: described support frame (1) is provided with the operating desk of guardrail (13) and control actuating unit and power switch.
8. high-speed railway subgrade shoulder protector concrete construction sliding formwork chassis according to claim 7, it is characterized in that: described guardrail sets up ceiling on (13), and illuminating lamp is set on the ceiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201211789U CN201610511U (en) | 2010-03-02 | 2010-03-02 | High-speed railway roadbed shoulder concrete construction sliding formwork trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201211789U CN201610511U (en) | 2010-03-02 | 2010-03-02 | High-speed railway roadbed shoulder concrete construction sliding formwork trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610511U true CN201610511U (en) | 2010-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201211789U Expired - Fee Related CN201610511U (en) | 2010-03-02 | 2010-03-02 | High-speed railway roadbed shoulder concrete construction sliding formwork trolley |
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| Country | Link |
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| CN (1) | CN201610511U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703076A (en) * | 2016-12-30 | 2017-05-24 | 宁夏众力管廊科技有限公司 | Outer die walking device for construction of comprehensive pipe gallery |
| CN109056656A (en) * | 2018-08-08 | 2018-12-21 | 杭州江润科技有限公司 | Tidal channel construction method is formed based on portable sliding formwork integral cast-in-situ |
| CN113266066A (en) * | 2021-06-10 | 2021-08-17 | 云南穿山机甲能源装备科技有限公司 | Ultrahigh ditch slip form construction method |
-
2010
- 2010-03-02 CN CN2010201211789U patent/CN201610511U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703076A (en) * | 2016-12-30 | 2017-05-24 | 宁夏众力管廊科技有限公司 | Outer die walking device for construction of comprehensive pipe gallery |
| CN106703076B (en) * | 2016-12-30 | 2019-12-20 | 宁夏众力管廊科技有限公司 | Outer mold walking device for construction of comprehensive pipe rack |
| CN109056656A (en) * | 2018-08-08 | 2018-12-21 | 杭州江润科技有限公司 | Tidal channel construction method is formed based on portable sliding formwork integral cast-in-situ |
| CN109056656B (en) * | 2018-08-08 | 2020-09-18 | 杭州江润科技有限公司 | Flood discharge ditch construction method based on portable slip form integral cast-in-place molding |
| CN113266066A (en) * | 2021-06-10 | 2021-08-17 | 云南穿山机甲能源装备科技有限公司 | Ultrahigh ditch slip form construction method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101020 Termination date: 20190302 |
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| CF01 | Termination of patent right due to non-payment of annual fee |