CN110625788B - Precast beam construction platform with adjustable pre-camber and working method thereof - Google Patents
Precast beam construction platform with adjustable pre-camber and working method thereof Download PDFInfo
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- CN110625788B CN110625788B CN201910940531.1A CN201910940531A CN110625788B CN 110625788 B CN110625788 B CN 110625788B CN 201910940531 A CN201910940531 A CN 201910940531A CN 110625788 B CN110625788 B CN 110625788B
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- hand wheel
- jacking
- precast beam
- camber
- height
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 230000007704 transition Effects 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000013102 re-test Methods 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 3
- 239000011178 precast concrete Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a precast beam construction platform with adjustable pre-camber, which comprises a workbench, wherein supporting frames which are mutually spaced at a certain distance are sequentially and transversely arranged along the length direction of the workbench, supporting springs used for balancing the dead weights of the workbench, the supporting frames and the precast beams are arranged below the supporting frames, a bearing platform is arranged at the lower end of the supporting springs, and a jacking mechanism used for adjusting the camber of the workbench is arranged on the bearing platform; the invention also relates to a working method of the precast beam construction platform with the adjustable pre-camber. The invention has reasonable structure and simple and convenient operation, can adjust the camber of the precast beam workbench by adjusting the jacking mechanism, and effectively ensures the construction quality of the precast beam on the workbench.
Description
Technical Field
The invention relates to a precast beam construction platform with adjustable pre-camber and a working method thereof.
Background
In recent decades, along with the rapid development of traffic industry in China, a large number of bridges are built in China, wherein the precast concrete beam bridge has wide application in China due to the characteristics of good structural performance, low construction cost, attractive appearance, convenient construction and the like.
However, the precast beam will generate certain deflection deformation under the combined action of dead weight, prestress and other permanent loads, so that the beam end elevation often appears in the precast beam erection construction to meet the design requirement, the midspan can exceed the design elevation, and the bridge deck pavement layer thickness cannot meet the design requirement, namely, the dead weight of the precast box beam is insufficient to balance the arch caused by the tension, the phenomenon directly affects the bridge deck pavement construction, the thickness of the bridge deck pavement layer is possibly uneven, and slope adjustment is more seriously caused, thereby not only increasing the engineering actual cost, but also increasing the secondary constant load of the bridge, and directly affecting the service life of the bridge. Therefore, it is necessary to cancel such deformation by providing a certain degree of arching, i.e., pre-arching, at the time of construction. The prefabricated beam is designed according to the prefabricated beam, and the prefabricated beam is designed according to the prefabricated beam, so that the prefabricated beam is designed according to the prefabricated beam, and the prefabricated beam is designed according to the prefabricated beam. The invention has reasonable structure and simple and convenient operation, can be simultaneously suitable for the fine adjustment of the pre-camber of precast beams and precast slabs with different types, lengths and weights, is particularly suitable for the prefabrication work of medium and large concrete members, and has good practical engineering application value and economic and social benefits.
Disclosure of Invention
In view of the above, the invention aims to provide the precast beam construction platform with adjustable pre-camber and the working method thereof, which have reasonable structure and simple and convenient operation, can be simultaneously suitable for the adjustment of the pre-camber of precast beams and plates with different types, lengths and weights, is particularly suitable for the adjustment of the pre-camber of a medium-sized and large precast concrete member, and has good practical engineering application value and economic and social benefits.
The technical scheme of the invention is as follows: the utility model provides a precast beam construction platform of camber adjustable in advance, includes the workstation, is provided with the support frame of mutual interval certain distance along workstation length direction transverse arrangement in proper order, is provided with the support spring that is used for balancing workstation, support frame and precast beam dead weight in the support frame below, is provided with the bearing platform at the support spring lower extreme, is provided with the top stay mechanism that is used for adjusting the workstation camber on the bearing platform.
Further, the jacking mechanism comprises a cross rod penetrating through the bearing table, at least two first conical gears are arranged on the cross rod, a second conical gear meshed with the first conical gears is arranged above the first conical gears, a screw rod penetrates through the second conical gears, a sleeve rod is sleeved at the upper end of the screw rod, the upper end of the sleeve rod is jacked on the supporting frame, a rotary hand wheel used for rotating the cross rod is arranged at the end part of the cross rod, and a limiting mechanism capable of fixing and limiting the rotary hand wheel is arranged on the rotary hand wheel.
Further, stop gear includes a plurality of first spacing hole that encircles rotatory hand wheel center setting, is provided with on the bearing platform can with first spacing hole complex second spacing hole, wears to be equipped with simultaneously in first spacing hole and second spacing hole and is used for preventing rotatory hand wheel pivoted gag lever post.
Further, gear teeth are arranged on the periphery of the rotary hand wheel, and a jacking height measuring mechanism capable of converting and measuring the ascending or descending height of the loop bar is arranged below the rotary hand wheel.
Further, the jacking height measuring mechanism comprises a jacking height display disc, a fixed support used for fixedly supporting the jacking height display disc is arranged below the jacking height display disc, a pointer and scales corresponding to the jacking height of the loop bar are arranged in the jacking height display disc, a rotating shaft penetrates through the center of the jacking height display disc, a transition gear meshed with gear teeth on the periphery of the rotating hand wheel is further arranged on the rotating shaft, one end of the rotating shaft is rotationally connected with the bearing table, the other end of the rotating shaft penetrates through the jacking height display disc and is rotationally connected with the jacking height display disc, and one end of the pointer is fixed on the rotating shaft.
Further, the length of the precast beam is set to be L, and the shoring mechanism is arranged at the middle part, the two end parts, L/4 and 3L/4 along the length direction of the precast beam; the spacing distance of the adjacent jacking mechanisms along the length direction of the precast beam is set to be l 0, and the supporting spring spacing l 0/4~ l0/2 is arranged between the adjacent jacking mechanisms.
The working method of the precast beam construction platform with the adjustable pre-camber comprises the following steps of: (1) Calculating the corresponding rising height of the loop bar of each jacking mechanism according to the pre-camber value required by the design of the precast beam; (2) Manually shaking a rotating hand wheel of the jacking mechanism to drive a cross rod to rotate, wherein the cross rod rotates to drive a first conical gear to rotate, the first conical gear rotates to drive a second conical gear to rotate, then a screw is driven to rotate, and then a loop bar is driven to rise to a specified height, so that a support frame is jacked up to a certain height, a workbench forms camber, when the rotating hand wheel rotates, gear teeth on the periphery of the rotating hand wheel also drive a transition gear to rotate, and then drive a rotating shaft to rotate, the rotating shaft rotates to drive a pointer to point to scales, so that a worker can see the rising height of the loop bar, and when the loop bar rises to the specified height, a limit rod penetrates into a first limit hole and a second limit hole to fix the rotating hand wheel, so that the rotating hand wheel is prevented from rotating; (3) After the height adjustment of the loop bars of all the shoring mechanisms is completed, the integral linear retest of the pre-camber of the precast beam is carried out, and the precast beam construction can be started after the requirements are met.
Compared with the prior art, the invention has the beneficial effects that: the invention can adjust the camber of the workbench by adjusting the height of the loop bar of the jacking mechanism, so that the workbench can be suitable for adjusting the pre-camber of precast beams and plates with different types, lengths and weights when being used for manufacturing precast beams, is particularly suitable for adjusting the pre-camber of large and medium precast concrete members, and has good practical engineering application value and economic and social benefits.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a partial schematic view of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 3 is a left side view of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 4 is a partial schematic view of FIG. 3 in accordance with an embodiment of the present invention;
FIG. 5 is a front view of a jacking height measurement mechanism according to an embodiment of the present invention;
FIG. 6 is a left side view of FIG. 5 in accordance with an embodiment of the present invention;
in the figure: 100-working table; 200-supporting frames; 300-supporting springs; 400-bearing table; 500-a jacking mechanism; 510-a cross bar; 520-a first bevel gear; 530-a second bevel gear; 540-screw; 550-loop bar; 560-rotating the hand wheel; 561-gear teeth; 570-a limiting mechanism; 571—a first limiting hole; 572-second limiting holes; 573-a stop lever; 600-jack height measurement mechanism; 610-top lift display tray; 611-scale; 612-pointer; 620-fixing the bracket; 630-a spindle; 640-transition gear.
Detailed Description
As shown in fig. 1-6, a precast beam construction platform with adjustable pre-camber comprises a workbench, wherein supporting frames which are mutually spaced at a certain distance are sequentially and transversely arranged along the length direction of the workbench, supporting springs used for balancing the dead weights of the workbench, the supporting frames and the precast beams are arranged below the supporting frames, a bearing table is arranged at the lower end of each supporting spring, and a jacking mechanism used for adjusting the camber of the workbench is arranged on each bearing table. The workbench is welded with the support frame, the support frame is arranged along the length direction of the workbench, the support frame is transversely arranged, the direction of the support frame is perpendicular to the length direction of the workbench, the support spring is located between the support frame and the bearing table, one end of the support spring is fixed on the support frame, the other end of the support spring is fixed on the bearing table, the support spring can balance the dead weight of the workbench and the support frame, the support mechanism is fixed on the bearing table, the upper end of the support mechanism is supported on the lower end of the support frame, and the bearing table is symmetrically arranged on two sides of the support frame.
In this embodiment, the jacking mechanism is including wearing to establish the horizontal pole on the bearing platform, is provided with two at least first conical gear on the horizontal pole, is provided with the second conical gear with first conical gear meshing above first conical gear, wears to be equipped with the screw rod on second conical gear, is equipped with the loop bar at the screw rod upper end cover, and the loop bar upper end is jacked in the support frame, is provided with the rotatory hand wheel that is used for rotating the horizontal pole at the horizontal pole tip, is provided with the stop gear that can fix the rotatory hand wheel on rotatory hand wheel. The horizontal pole passes the bearing platform, and first conical gear and second conical gear all set up inside the bearing platform, rotate through the bearing between horizontal pole and the bearing platform to be connected, and the loop bar is inside to be provided with screw rod complex screw hole, when the screw rod rotates, can drive the loop bar and rise or descend.
In this embodiment, stop gear includes a plurality of first spacing hole that encircles rotatory hand wheel center setting, is provided with on the bearing platform can with first spacing hole complex second spacing hole, wears to be equipped with simultaneously in first spacing hole and second spacing hole and is used for preventing rotatory hand wheel pivoted gag lever post. The first limiting holes are circumferentially arranged along the central shaft of the rotary hand wheel, the second limiting holes are formed in the side wall of the bearing table, the number of the second limiting holes is at least one, when the rotary hand wheel rotates by a designated angle and needs to be fixed, the limiting rod is inserted into the first limiting holes and the second limiting holes, and then the rotary hand wheel is fixed.
In this embodiment, the teeth are provided on the outer periphery of the rotary hand wheel, and a jack height measuring mechanism capable of converting and measuring the jack height of the loop bar. When in actual use, the rotation angle of the pointer corresponds to the lifting height marked on the scale through the conversion of the tooth distance of the screw threads, the tooth numbers of the first conical gear and the second conical gear and the tooth numbers of the gear teeth and the transition gear, and a user can observe the lifting or descending height of the loop bar through the lifting height measuring mechanism.
In this embodiment, the jacking height measurement mechanism includes the jacking height display disc, is provided with the fixed bolster that is used for fixed stay jacking height display disc in jacking height display disc below, is provided with the scale of pointer and corresponding loop bar jacking height in the jacking height display disc, wears to be equipped with the pivot at jacking height display disc center, still is provided with the transition gear with rotatory hand wheel periphery teeth of a cogwheel engaged with in the pivot, pivot one end and bearing table rotate to be connected, and the pivot other end passes in the jacking height display disc and rotates to be connected with the jacking height display disc, and pointer one end is fixed in the pivot. The jacking height display disc is fixed on the fixed support, one end of the pointer is fixed on the rotating shaft, the transition gear is sleeved on the rotating shaft, and the filtering gear is meshed with gear teeth on the periphery of the rotating hand wheel.
In the embodiment, the length of the precast beam is set to be L, and the shoring mechanism is arranged at the middle part, the two end parts, L/4 and 3L/4 along the length direction of the precast beam; the spacing distance of the adjacent jacking mechanisms along the length direction of the precast beam is set to be l 0, and the supporting spring spacing l 0/4~ l0/2 is arranged between the adjacent jacking mechanisms. Through reasonable layout in midspan, both ends, L/4 and 3L/4 department with the jack-up mechanism along precast beam length direction to and with supporting spring rational arrangement, enable jack-up mechanism and provide sufficient holding power, can also guarantee the whole linear precision of adjusting of support frame simultaneously.
The working method of the precast beam processing platform comprises the following steps of: (1) Calculating the corresponding rising height of the loop bar of each jacking mechanism according to the pre-camber value required by the design of the precast beam; (2) Manually shaking a rotating hand wheel of the jacking mechanism to drive a cross rod to rotate, wherein the cross rod rotates to drive a first conical gear to rotate, the first conical gear rotates to drive a second conical gear to rotate, then a screw is driven to rotate, and then a loop bar is driven to rise to a specified height, so that a support frame is jacked up to a certain height, a workbench forms camber, when the rotating hand wheel rotates, gear teeth on the periphery of the rotating hand wheel also drive a transition gear to rotate, and then drive a rotating shaft to rotate, the rotating shaft rotates to drive a pointer to point to scales, so that a worker can see the rising height of the loop bar, and when the loop bar rises to the specified height, a limit rod penetrates into a first limit hole and a second limit hole to fix the rotating hand wheel, so that the rotating hand wheel is prevented from rotating; (3) After the loop bars of all the jacking mechanisms are adjusted, the whole linear retest of the pre-camber of the precast beam is carried out, and the precast beam construction can be started after the requirements are met.
The above operation procedures and software and hardware configurations are only preferred embodiments of the present invention, and are not limited to the scope of the present invention, and all equivalent changes made by the descriptions and the drawings of the present invention, or direct or indirect application in the related technical field, are equally included in the scope of the present invention.
Claims (2)
1. The utility model provides a precast beam construction platform of camber adjustable in advance which characterized in that: the device comprises a workbench, wherein supporting frames which are mutually spaced at a certain distance are sequentially and transversely arranged along the length direction of the workbench, supporting springs used for balancing the dead weights of the workbench, the supporting frames and the precast beams are arranged below the supporting frames, a bearing table is arranged at the lower end of each supporting spring, and a jacking mechanism used for adjusting the camber of the workbench is arranged on each bearing table;
The jacking mechanism comprises a cross rod penetrating through the bearing table, at least two first conical gears are arranged on the cross rod, a second conical gear meshed with the first conical gears is arranged above the first conical gears, a screw rod penetrates through the second conical gears, a sleeve rod is sleeved at the upper end of the screw rod, the upper end of the sleeve rod is jacked on the supporting frame, a rotary hand wheel used for rotating the cross rod is arranged at the end part of the cross rod, and a limiting mechanism capable of fixing and limiting the rotary hand wheel is arranged on the rotary hand wheel;
The limiting mechanism comprises a plurality of first limiting holes which are arranged around the center of the rotary hand wheel, a second limiting hole which can be matched with the first limiting holes is arranged on the bearing table, and limiting rods which are used for preventing the rotary hand wheel from rotating are simultaneously arranged in the first limiting holes and the second limiting holes in a penetrating manner;
Gear teeth are arranged on the periphery of the rotary hand wheel, and a jacking height measuring mechanism capable of converting and measuring the ascending or descending height of the loop bar is arranged below the rotary hand wheel;
The jacking height measuring mechanism comprises a jacking height display disc, a fixed bracket for fixedly supporting the jacking height display disc is arranged below the jacking height display disc, a pointer and scales corresponding to the jacking height of the loop bar are arranged in the jacking height display disc, a rotating shaft penetrates through the center of the jacking height display disc, a transition gear meshed with gear teeth on the periphery of a rotating hand wheel is further arranged on the rotating shaft, one end of the rotating shaft is rotationally connected with the bearing table, the other end of the rotating shaft penetrates through the jacking height display disc and is rotationally connected with the jacking height display disc, and one end of the pointer is fixed on the rotating shaft;
Setting the length of the precast beam as L, and arranging the shoring mechanism at the middle part, the two end parts, L/4 and 3L/4 along the length direction of the precast beam; the spacing distance of the adjacent jacking mechanisms along the length direction of the precast beam is set to be l 0, and the supporting spring spacing l 0/4~ l0/2 is arranged between the adjacent jacking mechanisms.
2. A method of operating a pre-camber adjustable precast beam construction platform comprising the pre-camber adjustable precast beam construction platform of claim 1, characterized in that: (1) Calculating the corresponding rising height of the loop bar of each jacking mechanism according to the pre-camber value required by the design of the precast beam; (2) Manually shaking a rotating hand wheel of the jacking mechanism to drive a cross rod to rotate, wherein the cross rod rotates to drive a first conical gear to rotate, the first conical gear rotates to drive a second conical gear to rotate, then a screw is driven to rotate, and then a loop bar is driven to rise to a specified height, so that a support frame is jacked up upwards, a workbench forms camber, when the rotating hand wheel rotates, gear teeth on the periphery of the rotating hand wheel also drive a transition gear to rotate, and then drive a rotating shaft to rotate, the rotating shaft rotates to drive a pointer to point to scales, so that a worker can see the rising height of the loop bar, and when the loop bar rises to the specified height, a limit bar penetrates into a first limit hole and a second limit hole to fix the rotating hand wheel, so that the rotating hand wheel is prevented from rotating; (3) After the height adjustment of the loop bars of all the shoring mechanisms is completed, the integral linear retest of the pre-camber of the precast beam is carried out, and the precast beam construction can be started after the requirements are met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910940531.1A CN110625788B (en) | 2019-09-30 | 2019-09-30 | Precast beam construction platform with adjustable pre-camber and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910940531.1A CN110625788B (en) | 2019-09-30 | 2019-09-30 | Precast beam construction platform with adjustable pre-camber and working method thereof |
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| Publication Number | Publication Date |
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| CN110625788A CN110625788A (en) | 2019-12-31 |
| CN110625788B true CN110625788B (en) | 2024-06-07 |
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| CN201910940531.1A Active CN110625788B (en) | 2019-09-30 | 2019-09-30 | Precast beam construction platform with adjustable pre-camber and working method thereof |
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| CN117250191A (en) * | 2023-10-10 | 2023-12-19 | 江苏瀚辰园林科技有限公司 | Soil acidity and alkalinity detection device for landscaping engineering |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190819269A (en) * | 1908-03-26 | 1908-11-26 | Albert William Erdman | Improvements in Range-finders. |
| CN202742511U (en) * | 2012-08-03 | 2013-02-20 | 中铁十局集团有限公司 | Assembling type girder manufacturing pedestal |
| CN105155422A (en) * | 2015-09-15 | 2015-12-16 | 中国一冶集团有限公司 | Method for controlling pre-camber and pre-offsetting during mounting of post-tensioning precast prestressed concrete box girders |
| CN211250711U (en) * | 2019-09-30 | 2020-08-14 | 福州大学 | Precast beam construction platform with adjustable pre-camber |
-
2019
- 2019-09-30 CN CN201910940531.1A patent/CN110625788B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190819269A (en) * | 1908-03-26 | 1908-11-26 | Albert William Erdman | Improvements in Range-finders. |
| CN202742511U (en) * | 2012-08-03 | 2013-02-20 | 中铁十局集团有限公司 | Assembling type girder manufacturing pedestal |
| CN105155422A (en) * | 2015-09-15 | 2015-12-16 | 中国一冶集团有限公司 | Method for controlling pre-camber and pre-offsetting during mounting of post-tensioning precast prestressed concrete box girders |
| CN211250711U (en) * | 2019-09-30 | 2020-08-14 | 福州大学 | Precast beam construction platform with adjustable pre-camber |
Non-Patent Citations (1)
| Title |
|---|
| 韩国超高性能混凝土桥梁研究与应用;黄卿维等;中外公路;20160430;第36卷(第2期);第222-225页 * |
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