CN204551270U - adjustable pre-stress construction hoisting bracket - Google Patents
adjustable pre-stress construction hoisting bracket Download PDFInfo
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- CN204551270U CN204551270U CN201520102830.5U CN201520102830U CN204551270U CN 204551270 U CN204551270 U CN 204551270U CN 201520102830 U CN201520102830 U CN 201520102830U CN 204551270 U CN204551270 U CN 204551270U
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- pillar
- connecting rod
- sheave assembly
- hoisting bracket
- adjustable pre
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Abstract
The utility model provides a kind of adjustable pre-stress construction hoisting bracket, comprise two portal frames be arranged in parallel, the lower sheave assembly that can horizontally slip along portal frame top is provided with between the top of two portal frames, lower sheave assembly is provided with and along the top sheave assembly of lower sheave assembly slide anteroposterior, below top sheave assembly, hoisting structure can be provided with.The utility model convenient operation personnel regulate mobile hoisting bracket, and ensure that punching jack lifts timely and effective stretch-draw, in turn ensure that the precision that jack is installed and effect.
Description
Technical field
The utility model relates to technical field of bridge engineering, is specifically related to a kind of adjustable pre-stress construction hoisting bracket.
Background technology
Bridge main beam prestressing force, in precasting yard stretching process, generally adopt punching jack tension, and it is often cumbersome to lift punching jack.Lifting punching jack mode comparatively general is at present for adopting light weight crane lifting.Because girder needs the prestressing force of stretch-draw more, and be distributed in each position of girder section, adopt crane lifting construction speed relatively slower, Hoisting Position is difficult to regulate, and construction has danger; Crane equipment cost is higher, and cost is comparatively large, does not have economy; In addition, crane volume is comparatively large, is difficult in the operation of precasting yard narrow space place, is unfavorable for the prestressed effectively stretch-draw fast of girder.This usual manner is comparatively wasted, complicated operation, and dangerous high, consuming cost is larger.No matter be that traditional punching jack lifting mode cannot meet the demand of society in ageing, economy, safety etc., be badly in need of improving.
Utility model content
For above-mentioned technical problem, the utility model provides a kind of adjustable pre-stress construction hoisting bracket, and convenient operation personnel regulate mobile hoisting bracket, and ensure that punching jack lifts timely and effective stretch-draw, in turn ensure that the precision that jack is installed and effect.
The utility model provides a kind of adjustable pre-stress construction hoisting bracket, two portal frames be arranged in parallel, the lower sheave assembly that can horizontally slip along portal frame top is provided with between the top of two portal frames, lower sheave assembly is provided with and along the top sheave assembly of lower sheave assembly slide anteroposterior, below top sheave assembly, hoisting structure can be provided with.
Described portal frame comprises two adjustable for height pillars and crossbeam, integratedly with it to connect between the top that crossbeam is arranged at two pillars.Pillar is hollow-core construction, is provided with base below pillar, and susceptor surface is vertically installed with the screw rod being socketed on pillar inside, screw rod is provided with the bolt matched with it, and pillar bottom is supported on bolt upper surface.Diagonal brace is provided with between described crossbeam and pillar.
Be provided with cross bar between described two portal frames, the two ends of cross bar are fixedly connected with corresponding pillar respectively.Lay respectively on pillar corresponding on two portal frames and be symmetrically arranged with barrel connector, the two ends of cross bar are socketed on corresponding barrel connector inside and are fixedly connected with it by bolt.
Described lower sheave assembly comprises lower sheave and lower connecting rod, four lower sheaves are equally divided on two groups of crossbeams being arranged at two portal frames respectively, be provided with lower connecting rod between two adjacent bottom rollers, described lower connecting rod and bottom roller coordinate formation rectangular frame structure.
Described top sheave assembly comprises by top sheave and upper connecting rod, and top sheave is positioned at the two ends of upper connecting rod, and two top sheaves are arranged at respectively with on two of beam vertical lower connecting rods, are provided with hoisting structure below upper connecting rod.
The utility model hoisting structure comprises iron chains, and iron chains one end is connected to the middle suspension centre of upper connecting rod, and the iron chains other end is connected with Chain block, is connected on the downside of Chain block by lifting rope steel strand with jack.
The both sides, front and back of described upper roller are provided with block, and described upper block matches with lower connecting rod, and the bottom of upper block is lower than the bottom of upper roller.The both sides, front and back of described bottom roller are provided with lower block, and described lower block matches with crossbeam, and the bottom of lower block is lower than the bottom of bottom roller.
The utility model can be applied in the hoisting process of various precast beam prestressed stretch-draw jack.Support is made up of steel work, and the utility model equipment is lightly installed simply, has both been applicable to on-the-spot processing and manufacturing, is also adapted to processing and manufacturing in factory.The utility model is only spliced by collet, pillar, crossbeam, crossbeam and pulley assembly, standard and symmetrical, and simple structure is quick, and dismounting is simple, and architecture quality is comparatively light, easy to carry.The assembled simple and fast of the utility model, rod member lighter weight, can be manually assembled at the scene; The cooperation of pillar and screw rod bolt can realize the adjustment of jack upper-lower height, and upper and lower pulley assembly can realize the adjustment of jack right position, can moved by hand hoisting point position, processing ease; In addition, detachable between each component, be convenient to the mobile operating of support between different beam body.Involved by the utility model, structure and material is general type, by selecting product qualified on market, completing structural checking computation and be reliably connected, can ensure structure use safety; By strictly implementing construction sequence and Operation Key, process safety can be ensured.And support small volume, degree of safety is higher.The utility model adopts common process technique and common section bar to be made, and simply, cost of manufacture is lower for assembling and processing; The utility model operation is simple, greatly reduces the expense of support installing and transhipment, has adapted to the lifting of various precast beam prestressed stretch-draw jack preferably, there is very large economic benefit.The utility model is except the lifting for precast beam prestressed stretch-draw jack, and also relate in the object of construction production of jack lifting problem for other, applicability can effectively be promoted by force.
Accompanying drawing explanation
Fig. 1 is the utility model front view
Fig. 2 is the utility model lateral view
Fig. 3 is the top view of pulley assembly
Wherein, 1-base, 2-screw rod, 3-nut, 4-pillar, 5-crossbeam, 6-diagonal brace, 7-barrel connector, 8-bolt, 9-cross bar, 10-upper roller, 11-upper connecting rod, the upper block of 12-, 13-iron chains, 14-Chain block, 15-jack, 16-lifting rope steel strand, 17-bottom roller, 18-lower connecting rod, block under 19-, 20-girder.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the utility model is described in further detail:
The utility model provides a kind of adjustable pre-stress construction hoisting bracket, two portal frames be arranged in parallel, the lower sheave assembly that can horizontally slip along portal frame top is provided with between the top of two portal frames, lower sheave assembly is provided with and along the top sheave assembly of lower sheave assembly slide anteroposterior, below top sheave assembly, hoisting structure can be provided with.
As shown in Figure 1, described portal frame comprises two bases, 1, two pillars 4 and crossbeam 5, pillar 4 is hollow-core construction, base 1 surface is vertically installed with the screw rod 2 being socketed on pillar 4 inside, screw rod is provided with the nut 3 matched with it, pillar 4 is hollow foot bar configuration, and internal diameter is a bit larger tham screw rod 2 diameter, pillar 4 bottom supporting, can along with nut 3 adjustable height on nut 3.Crossbeam 5 is solid cylinder reinforcing bar, smooth surface, and crossbeam 5 two ends are weldingly connected with the pillar 4 of two Length discrepancy respectively, and the base 1 of shorter pillar 4 correspondence is positioned over girder 20 end face, and the corresponding base 1 of longer pillar 4 is positioned over ground.Be provided with diagonal brace 6 between described crossbeam 5 and pillar 4, described diagonal brace 6 is plain bars, ensures the connective stability between crossbeam 5 and pillar 4.
As shown in Figure 2, be provided with cross bar 9 between described two portal frames, the two ends of cross bar 9 are fixedly connected with corresponding pillar 4 respectively.Lay respectively in the present embodiment on pillar 4 corresponding on two portal frames and be symmetrically arranged with barrel connector 7, described cross bar 9 is slightly smaller than the scaffold of barrel connector 7 for external diameter, and it is inner and be fixedly connected with it by bolt 8 that the two ends of cross bar 9 are socketed on corresponding barrel connector 7.Two portal frames connect into entirety by horizontal white silk, form an easy support.Cradle top forms the frame construction of rectangle by crossbeam 5 and cross bar 9, for placing pulley assembly.
As shown in Figure 1,3, the described lower sheave assembly be made up of lower sheave and lower connecting rod 18, the crossbeam 5 of two portal frames is respectively provided with two bottom rollers 17, the groove of described bottom roller 17 is arranged on crossbeam 5, described crossbeam 5 is ganoid solid cylinder reinforcing bar, is convenient to bottom roller 17 at its surface sliding.Be provided with lower connecting rod 18 between two adjacent bottom rollers 17, described lower connecting rod 18 and bottom roller 17 coordinate formation rectangular frame structure, can move along crossbeam 5 length direction.
The described top sheave assembly be made up of top sheave and upper connecting rod 11, two lower connecting rods 18 vertical with crossbeam 5 are respectively provided with a top sheave, two top sheaves are connected by the upper connecting rod 11 parallel with crossbeam 5, described lower connecting rod 18 is ganoid solid cylinder reinforcing bar, is convenient to bottom roller 17 at its surface sliding along moving perpendicular to crossbeam 5 direction.Hang below upper connecting rod 11 and be connected to jack, by the cooperation of top sheave assembly and lower sheave assembly, jack can be moved in the both direction being parallel and perpendicular to crossbeam 5.The both sides, front and back of described upper roller 10 are provided with block 12, and described upper block matches with lower connecting rod 18, and the bottom of upper block 12 is lower than the bottom of upper roller 10.The both sides, front and back of described bottom roller 17 are provided with lower block 19, and described lower block matches with crossbeam 5, and the bottom of lower block 19, lower than the bottom of bottom roller 17, prevents upper roller 10 and bottom roller 17 from departing from definitive orbit.
The utility model also comprises iron chains 13, and iron chains 13 one end is connected to the middle suspension centre of upper connecting rod 11, and iron chains 13 other end is connected with Chain block 14, is connected on the downside of Chain block 14 by lifting rope steel strand with jack 15, realizes lifting jack 15.
First screw rod 2 is put into the pillar 4 of portal frame, again base 1 is placed on design attitude, single portal frame pillar is placed on Liang Tiding, and a pillar is placed on ground, by barrel connector 7, two portal frames are linked together with cross bar 9, form a simple rack.After simple rack installs, be placed on simple rack by the pulley assembly that two have been welded, roller 17 groove is stuck on crossbeam 5, and lower sheave assembly is moved along crossbeam direction.Be placed on lower sheave assembly by top sheave assembly again, same top sheave component roller wheel 10 groove is stuck on wheel shaft rod member 18, and top sheave assembly can be moved along perpendicular to crossbeam direction.After all structure installment are complete, Chain block 14 are installed, and adopt lifting rope steel strand 16 to connect jack 15.By mobile upper and lower pulley assembly, the left-right and front-back that can realize jack moves.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
The content be not described in detail in this manual belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1. an adjustable pre-stress construction hoisting bracket, it is characterized in that two portal frames be arranged in parallel, the lower sheave assembly that can horizontally slip along portal frame top is provided with between the top of two portal frames, lower sheave assembly is provided with and along the top sheave assembly of lower sheave assembly slide anteroposterior, below top sheave assembly, hoisting structure can be provided with.
2. adjustable pre-stress construction hoisting bracket according to claim 1, is characterized in that portal frame comprises two adjustable for height pillars and crossbeam, integratedly with it to connect between the top that crossbeam is arranged at two pillars.
3. adjustable pre-stress construction hoisting bracket according to claim 2, its characteristic pillar is hollow-core construction, base is provided with below pillar, susceptor surface is vertically installed with the screw rod being socketed on pillar inside, screw rod is provided with the bolt matched with it, pillar bottom is supported on bolt upper surface.
4. adjustable pre-stress construction hoisting bracket according to claim 3, is characterized in that being provided with diagonal brace between crossbeam and pillar.
5. adjustable pre-stress construction hoisting bracket according to claim 4, it is characterized in that being provided with cross bar between two portal frames, the two ends of cross bar are fixedly connected with corresponding pillar respectively.
6. adjustable pre-stress construction hoisting bracket according to claim 5, it is characterized in that laying respectively on pillar corresponding on two portal frames and be symmetrically arranged with barrel connector, the two ends of cross bar are socketed on corresponding barrel connector inside and are fixedly connected with it by bolt.
7. adjustable pre-stress construction hoisting bracket according to claim 6, it is characterized in that lower sheave assembly comprises lower sheave and lower connecting rod, four lower sheaves are equally divided on two groups of crossbeams being arranged at two portal frames respectively, be provided with lower connecting rod between two adjacent bottom rollers, described lower connecting rod and bottom roller coordinate formation rectangular frame structure.
8. adjustable pre-stress construction hoisting bracket according to claim 7, it is characterized in that top sheave assembly comprises by top sheave and upper connecting rod, top sheave is positioned at the two ends of upper connecting rod, two top sheaves are arranged at respectively with on two of beam vertical lower connecting rods, are provided with hoisting structure below upper connecting rod.
9. adjustable pre-stress construction hoisting bracket according to claim 8, it is characterized in that hoisting structure comprises iron chains, iron chains one end is connected to the middle suspension centre of upper connecting rod, and the iron chains other end is connected with Chain block, is connected on the downside of Chain block by lifting rope steel strand with jack.
10. adjustable pre-stress construction hoisting bracket according to claim 9, it is characterized in that the both sides, front and back of upper roller are provided with block, described upper block matches with lower connecting rod, the bottom of upper block is lower than the bottom of upper roller, the both sides, front and back of bottom roller are provided with lower block, described lower block matches with crossbeam, and the bottom of lower block is lower than the bottom of bottom roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102830.5U CN204551270U (en) | 2015-02-12 | 2015-02-12 | adjustable pre-stress construction hoisting bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102830.5U CN204551270U (en) | 2015-02-12 | 2015-02-12 | adjustable pre-stress construction hoisting bracket |
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| Publication Number | Publication Date |
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| CN204551270U true CN204551270U (en) | 2015-08-12 |
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| CN201520102830.5U Active CN204551270U (en) | 2015-02-12 | 2015-02-12 | adjustable pre-stress construction hoisting bracket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767671A (en) * | 2018-05-29 | 2018-11-06 | 吴远 | A kind of mined flame-proof switch cabinet case support adjustment mechanism |
-
2015
- 2015-02-12 CN CN201520102830.5U patent/CN204551270U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767671A (en) * | 2018-05-29 | 2018-11-06 | 吴远 | A kind of mined flame-proof switch cabinet case support adjustment mechanism |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 2101-2104, 21 / F, unit a, block a, Hubei science and technology venture building, Xiaohongshan East District, Wuchang District, Wuhan City, Hubei Province, 430061 Patentee after: CCCC Road & Bridge Special Engineering Co.,Ltd. Address before: 430071 20 / F, Dongsha building, 122 Zhongbei Road, Wuchang, Wuhan, Hubei Province Patentee before: CCCC ROAD & BRIDGE SPECIAL ENGINEERING Co.,Ltd. |
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| CP03 | Change of name, title or address |