CN214993151U - Accurate quick positioner of short tower cable-stay bridge branch silk pipe cable saddle - Google Patents
Accurate quick positioner of short tower cable-stay bridge branch silk pipe cable saddle Download PDFInfo
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- CN214993151U CN214993151U CN202120718101.8U CN202120718101U CN214993151U CN 214993151 U CN214993151 U CN 214993151U CN 202120718101 U CN202120718101 U CN 202120718101U CN 214993151 U CN214993151 U CN 214993151U
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Abstract
The invention provides a device for accurately and quickly positioning a cable saddle of a wire-separating pipe of a short-tower cable-stayed bridge, which comprises two pairs of first embedded vertical frames for positioning two ends of the cable saddle, wherein a group of second embedded vertical frames are arranged between the two pairs of first embedded vertical frames along the extension direction of the cable saddle, the first embedded vertical frames are provided with an elevation fine adjustment device, the elevation fine adjustment device comprises a jacking screw rod and an adjusting nut sleeved on the jacking screw rod, and each pair of second embedded vertical frames is respectively provided with a temporary hoisting device and a quick positioning clamp for fixing the cable saddle. The utility model provides a pair of short tower cable-stay bridge divides accurate quick positioner of wire pipe cable saddle utilizes a set of pre-buried grudging post that sets up along cable saddle installation direction to realize the location to its each segmental elevation at cable saddle hoist and mount in-process, and the adjustment of being convenient for is rechecked, need not to relapse and welds and the unwelding in the measurement process, and guarantee construction safety improves the efficiency of construction, ensures the construction precision.
Description
Technical Field
The utility model relates to a short tower cable-stay bridge divides accurate quick positioner of silk pipe cable saddle belongs to bridge construction auxiliary fixtures technical field.
Background
Generally, the number of prestressed bridge structures is more than 100m for the medium bridge, the number of cable-stayed bridge structures is more than 200m for the medium bridge, and in consideration of economy and constructability, the bridge between the prestressed box girder bridge and the general cable-stayed bridge is more suitable for the bridge with the span of 100m to 200 m. The short-tower cable-stayed bridge is essentially a continuous beam bridge, and the vertical component force generated by the short-tower cable-stayed bridge is smaller than that generated by a dense cable system due to the small inclination angle. With the increasing maturity of high-speed railway construction technology and the development of bridge construction technology, the bridge type of the short-tower cable-stayed bridge is widely applied to the high-speed railway construction.
In the construction process of the cable saddle of the wire-separating pipe of the short-tower cable-stayed bridge, the position of each wire-separating pipe cable saddle is different, and any deviation in construction can influence the stress condition of the full bridge. The positioning construction of the wire separating pipe cable saddle on the bridge tower is difficult and low in precision, and the positioning precision of the wire separating pipe cable saddle directly influences the service life of the stay cable in later operation, so that the installation and positioning of the wire separating pipe cable saddle become a serious difficulty in construction.
In the existing construction process, the two ends of a branch pipe cable saddle are usually positioned by using L-shaped angle steel, a middle section is fixed by using a well-shaped frame, the middle section of the cable saddle is repeatedly measured and positioned by experience in the process, a large amount of operations such as welding, fixing, measuring, adjusting, unfastening and fixing exist, the precision is poor, the efficiency is low, and a large amount of overhead welding also brings hidden dangers to safety construction.
In order to solve the problem of positioning the middle section of the cable saddle, a construction unit tries to arrange a central elevation positioning frame at the highest point of the cable saddle to be installed in advance, install a position calibration object at the central elevation position, then integrally hoist the cable saddle, determine the installation position through the position calibration object, and ensure that the elevation positions of the two ends and the highest point of the cable saddle are correct. However, the method adopts integral hoisting, the controllability is poor, in addition, the elevation positions of the sections except the lowest point and the highest point cannot be ensured, manual repeated measurement and rechecking are needed, and the construction challenge still exists.
Disclosure of Invention
In order to solve the not enough of prior art, the utility model provides a short tower cable-stay bridge divides accurate quick positioner of wire tube cable saddle, the pre-buried grudging post of usable a set of cable saddle installation direction setting of edge realizes the location to its each segmental elevation at cable saddle hoist and mount in-process, and the adjustment of being convenient for is rechecked, need not to relapse and welds and the unwelding in the measurement process, and guarantee construction safety improves the efficiency of construction, ensures the construction precision.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides a short tower cable-stay bridge divides accurate quick positioner of wire pipe cable saddle, including two pairs of first pre-buried grudging posts that are used for fixing a position cable saddle both ends, be equipped with the pre-buried grudging post of a set of second along cable saddle extending direction between two pairs of first pre-buried grudging posts, first pre-buried grudging post is equipped with the fine adjustment device of elevation, and the fine adjustment device of elevation includes jacking lead screw and the adjusting nut of suit on the jacking lead screw, and every pair of pre-buried grudging posts of second is equipped with interim hoisting accessory and is used for the quick locator card of fixed cable saddle respectively.
The first embedded vertical frame comprises 2 first embedded stand columns and a supporting cross beam between the first embedded stand columns, a group of reserved holes are formed in the supporting cross beam, and a jacking screw rod of the elevation fine adjustment device is installed in the reserved holes.
The second embedded vertical frame comprises 2 second embedded vertical columns and an upper cross beam between the second embedded vertical columns, and the temporary hoisting device is installed on the upper cross beam.
The quick positioning clamp comprises a hoop used for sleeving the cable saddle and a connecting rod connected with the second embedded upright post and arranged on the side of the hoop.
The hoop comprises two semicircular hoops, the end parts of the semicircular hoops are provided with mounting plates, bolt holes are formed in the mounting plates, and the mounting plates are connected through fastening bolts.
The lower cross beam is arranged between the second embedded stand columns of each pair of second embedded stands, a reserved hole channel is formed in the lower cross beam, an elevation fine adjustment device is installed at the position of the reserved hole channel and comprises a jacking screw rod installed in the reserved hole channel and an adjusting nut sleeved on the jacking screw rod, a longitudinal limiting groove is formed in the inner side of each second embedded stand column, a limiting hole is formed in the bottom of a connecting rod of the quick positioning clamp, the end portion of the connecting rod of the quick positioning clamp is located in the limiting groove of each second embedded stand column, and the top of the jacking screw rod of the elevation fine adjustment device is located in the limiting hole in the bottom of the connecting rod.
The temporary hoisting device adopts a chain block, and a lifting rope between the chain block and the cable saddle adopts a steel wire rope sleeve.
The utility model discloses based on the beneficial effect that its technical scheme had lies in:
(1) the utility model provides a pair of short tower cable-stay bridge divides wire pipe cable saddle accurate and fast positioner, introduce elevation fine adjustment device and realize the accurate positioning of elevation, utilize a set of pre-buried grudging post that is equipped with interim hoisting accessory that sets up along cable saddle extending direction, realize the interim hoist and mount and the subsection fine setting location of cable saddle middle section, and convert part welded joint into mechanical connector through quick locator card in the positioning process, thereby reduce welded joint quantity, dissolve the high altitude construction risk, be convenient for adjust and recheck, need not to weld and unweld repeatedly in the measurement process, ensure construction safety, improve the efficiency of construction, ensure the construction precision;
(2) in the device for accurately and quickly positioning the cable saddle of the branch cable pipe of the short-tower cable-stayed bridge, the elevation stripping device has simple structure, easy installation and good adjustment effect;
(3) the utility model provides a pair of short tower cable-stay bridge divides in the accurate quick positioner of silk pipe cable saddle, the pre-buried stand of second also can set up the height fine tuning device, accomplishes and carries out the secondary after cable saddle monolithic stationary and rechecks, further improves the construction precision.
Drawings
Fig. 1 is a front schematic view of a precise and rapid positioning device for a cable saddle of a cable-branching pipe of a short-tower cable-stayed bridge.
Fig. 2 is a schematic side view of a device for accurately and rapidly positioning a cable saddle of a cable-branching pipe of a short-tower cable-stayed bridge.
Fig. 3 is a schematic view of a quick locator card installation.
Fig. 4 is a large view of a quick locator card.
FIG. 5 is a schematic view of a support beam.
Fig. 6 is a schematic side view of the second pre-buried stand.
Fig. 7 is a schematic view of the saddle anchor pad installation.
Fig. 8 is a schematic view of a second embedded vertical frame provided with an elevation fine-adjustment device.
In the figure, 1-a first embedded upright post, 2-a second embedded upright post, 3-a supporting beam, 4-a reserved hole channel, 5-an elevation fine adjustment device, 6-an adjusting nut, 7-a jacking screw rod, 8-an upper beam, 9-a chain block, 10-a chain block inhaul cable, 11-a pulley block, 12-a steel wire rope sleeve, 13-a quick positioning clamp, 14-a fastening bolt, 15-a cable saddle, 16-cable tower concrete and 17-a lower beam.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1 to 7, the utility model provides a short tower cable-stayed bridge wire-dividing pipe cable saddle accurate and rapid positioning device, which comprises two pairs of first pre-buried vertical frames for positioning two ends of a cable saddle 15, wherein each first pre-buried vertical frame comprises 2 first pre-buried vertical columns 1 and a supporting beam 3 between the first pre-buried vertical columns, the supporting beam is provided with a group of reserved holes 4, the first pre-buried vertical frame is provided with an elevation fine adjustment device 5, the elevation fine adjustment device comprises a jacking lead screw 7 and an adjusting nut 6 sleeved on the jacking lead screw, each pair of second pre-buried vertical frames is respectively provided with a temporary lifting device and a rapid positioning clamp 13 for fixing the cable saddle, the jacking lead screw of the elevation fine adjustment device is arranged in the reserved holes, the rapid positioning clamp comprises a hoop for sleeving the cable saddle and a connecting rod connected with the second pre-buried vertical columns at the side part of the hoop, the hoop comprises two semicircular hoops, the end parts of the semicircular hoops are provided with mounting plates, the mounting plates are provided with bolt holes and are connected through fastening bolts 14.
A set of second embedded vertical frames are arranged between the two pairs of first embedded vertical frames along the extending direction of the cable saddle, each second embedded vertical frame comprises an upper cross beam 8 between 2 second embedded vertical columns 2 and the second embedded vertical columns, and the temporary hoisting device is installed on the upper cross beam. The temporary hoisting device adopts a chain block 9, and a lifting rope between the chain block and the cable saddle adopts a steel wire rope sleeve 12.
Referring to fig. 8, in order to further improve the adjustment flexibility of each section of cable saddle, a lower cross beam 17 can be arranged between the second embedded columns of each pair of second embedded vertical frames, a reserved hole is formed in the lower cross beam, an elevation fine adjustment device is installed at the reserved hole and comprises a jacking screw rod installed in the reserved hole and an adjusting nut sleeved on the jacking screw rod, a longitudinal limiting groove is formed in the inner side of each second embedded column, a limiting hole is formed in the bottom of a connecting rod of a quick positioning clamp, the end portion of the connecting rod of the quick positioning clamp is located in the limiting groove of each second embedded column, and the top of the jacking screw rod of the elevation fine adjustment device is located in the limiting hole in the bottom of the connecting rod.
The utility model provides a pair of short tower cable-stay bridge divides accurate quick positioner of silk pipe cable saddle's work progress does:
(1) before pouring 16 cable tower concrete of a section before a cable saddle needs to be installed, pre-burying a first pre-buried upright post (4) and a second pre-buried upright post (8) in advance, and ensuring the stability and the plane position of all the pre-buried upright posts, wherein the pre-buried position is matched with the size of the cable saddle; before the cable saddle is installed, welding 2 supporting cross beams on first embedded columns at two ends, wherein the plane position is located at the lower edge of an anchor backing plate of the cable saddle, reserved channels required by an elevation fine adjustment device are reserved on the supporting cross beams, and 2 reserved channels are reserved on each supporting cross beam;
(2) accurate measurement and positioning are carried out before the reserved hole channels are arranged, and the jacking screw rods of the 4 elevation fine adjustment devices are ensured to be exactly positioned at the lower corner points of the cable saddle anchor backing plate; after the reservation is finished, installing an elevation fine adjustment device, and determining whether the position of the elevation fine adjustment device is matched with the 4 lower corner points of the cable saddle again;
(3) after the re-check is carried out, the cable saddle is hoisted to the fine adjustment device, and at the moment, 4 lower angular points of the cable saddle are just positioned on the jacking screw rod;
(4) after the cable saddle is hoisted in place, welding the upper cross beams, respectively welding the 4 upper cross beams on the second embedded vertical columns at corresponding positions, reserving positions for mounting the chain block 9, the pulley 11 and the steel wire rope sleeve 12 at a clearance height between the cable saddle and the highest point of the cable saddle at the corresponding positions, and respectively mounting the chain block, the pulley and the steel wire rope sleeve on the corresponding upper cross beams;
(5) after the installation is finished, 4 chain blocks are tensioned through a chain block inhaul cable 10, so that a cable saddle is temporarily suspended in the air in the elevation fine adjustment device, an adjusting nut of the elevation fine adjustment device is rotated to drive a jacking screw rod to lift, the elevations of four angular points of the cable saddle are adjusted, after the elevation adjustment is finished, a measuring person changes hands to recheck, after the elevation recheck is correct, the plane position of the cable saddle can be adjusted, and the cable saddle is suspended, and a steel wire rope sleeve with good flexibility is selected as a lifting rope, so that the plane position of the cable saddle can be adjusted manually;
(6) and after the plane position is adjusted, retesting the position of the cable saddle again, installing a quick positioning clamp after retesting, respectively welding the quick positioning clamp on the corresponding second embedded upright columns, and screwing the fastening bolt.
The above processes are repeated, and the positioning work of each component wire pipe cable saddle of the short tower cable-stayed bridge can be completed. In the process, the elevation fine adjustment device and the temporary hoisting device are easy to detach and can be repeatedly used, and the material utilization rate is improved.
The utility model discloses a quick locator card replaces traditional groined type frame, the reducible 6 welding points of a set of locating rack to can improve work efficiency, reduce workman high altitude welded time, the safe risk has been solved in the while of raising the efficiency, and the flexibility is high, can measure repeatedly and accord with the elevation position, improves the accuracy nature.
After the positioning is finished, the elevation fine adjustment device, the pulley, the chain block and the steel wire rope sleeve in the device can be detached for recycling.
In this embodiment, the first embedded column, the second embedded column and the supporting beam are processed by using 10# channel steels, and the upper beam and the lower beam are processed by using angle steels of 75 × 50 × 6.
The specification of the chain block is 1t, the diameter of the steel wire rope sleeve is 11mm, the diameter of the fastening bolt is 20mm, the pulley is a single-wheel single-groove pulley, and the diameter of the pulley is not less than 10 cm.
The utility model provides a pair of short tower cable-stay bridge divides accurate quick positioner of wire pipe cable saddle utilizes a set of pre-buried grudging post along cable saddle installation direction setting, realizes the location to its each segmental elevation at cable saddle hoist and mount in-process, and the adjustment of being convenient for is rechecked, need not to relapse and welds and unweld in the measurement process, and guarantee construction safety improves the efficiency of construction, ensures the construction precision.
Modifications and variations of the present invention will be apparent to those skilled in the art in light of the foregoing description, and all such modifications and variations are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (7)
1. The utility model provides a short tower cable-stay bridge divides accurate quick positioner of wire tube cable saddle, includes two first pre-buried grudging posts that are used for fixing a position cable saddle both ends, its characterized in that: a set of second embedded vertical frames are arranged between the two pairs of first embedded vertical frames along the extending direction of the cable saddle, the first embedded vertical frames are provided with elevation fine adjustment devices, each elevation fine adjustment device comprises a jacking screw rod and an adjusting nut sleeved on the jacking screw rod, and each pair of second embedded vertical frames are respectively provided with a temporary hoisting device and a quick positioning clamp used for fixing the cable saddle.
2. The device for accurately and rapidly positioning the cable saddle of the branched cable pipe of the short-tower cable-stayed bridge according to claim 1, wherein: the first embedded vertical frame comprises 2 first embedded stand columns and a supporting cross beam between the first embedded stand columns, a group of reserved holes are formed in the supporting cross beam, and a jacking screw rod of the elevation fine adjustment device is installed in the reserved holes.
3. The device for accurately and rapidly positioning the cable saddle of the branched cable pipe of the short-tower cable-stayed bridge according to claim 1, wherein: the second embedded vertical frame comprises 2 second embedded vertical columns and an upper cross beam between the second embedded vertical columns, and the temporary hoisting device is installed on the upper cross beam.
4. The device for accurately and rapidly positioning the cable saddle of the branched cable pipe of the short-tower cable-stayed bridge according to claim 3, wherein: the quick positioning clamp comprises a hoop used for sleeving the cable saddle and a connecting rod connected with the second embedded upright post and arranged on the side of the hoop.
5. The device for accurately and rapidly positioning the cable saddle of the branched cable pipe of the short-tower cable-stayed bridge according to claim 4, wherein: the hoop comprises two semicircular hoops, the end parts of the semicircular hoops are provided with mounting plates, bolt holes are formed in the mounting plates, and the mounting plates are connected through fastening bolts.
6. The device for accurately and rapidly positioning the cable saddle of the branched cable pipe of the short-tower cable-stayed bridge according to claim 3, wherein: the lower cross beam is arranged between the second embedded stand columns of each pair of second embedded stands, a reserved hole channel is formed in the lower cross beam, an elevation fine adjustment device is installed at the position of the reserved hole channel and comprises a jacking screw rod installed in the reserved hole channel and an adjusting nut sleeved on the jacking screw rod, a longitudinal limiting groove is formed in the inner side of each second embedded stand column, a limiting hole is formed in the bottom of a connecting rod of the quick positioning clamp, the end portion of the connecting rod of the quick positioning clamp is located in the limiting groove of each second embedded stand column, and the top of the jacking screw rod of the elevation fine adjustment device is located in the limiting hole in the bottom of the connecting rod.
7. The device for accurately and rapidly positioning the cable saddle of the branched cable pipe of the short-tower cable-stayed bridge according to claim 1, wherein: the temporary hoisting device adopts a chain block, and a lifting rope between the chain block and the cable saddle adopts a steel wire rope sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120718101.8U CN214993151U (en) | 2021-04-09 | 2021-04-09 | Accurate quick positioner of short tower cable-stay bridge branch silk pipe cable saddle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120718101.8U CN214993151U (en) | 2021-04-09 | 2021-04-09 | Accurate quick positioner of short tower cable-stay bridge branch silk pipe cable saddle |
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| Publication Number | Publication Date |
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| CN214993151U true CN214993151U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120718101.8U Active CN214993151U (en) | 2021-04-09 | 2021-04-09 | Accurate quick positioner of short tower cable-stay bridge branch silk pipe cable saddle |
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| CN (1) | CN214993151U (en) |
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2021
- 2021-04-09 CN CN202120718101.8U patent/CN214993151U/en active Active
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