CN212050137U - Hoisting system for preventing truss sheet of arch structure from inclining - Google Patents
Hoisting system for preventing truss sheet of arch structure from inclining Download PDFInfo
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- CN212050137U CN212050137U CN202020111561.XU CN202020111561U CN212050137U CN 212050137 U CN212050137 U CN 212050137U CN 202020111561 U CN202020111561 U CN 202020111561U CN 212050137 U CN212050137 U CN 212050137U
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Abstract
The utility model discloses a hoist and mount system that structure purlin piece of encircleing was prevented heeling and was used relates to purlin piece hoist and mount technical field in the arch bridge construction, include: the truss piece unit is provided with a first lifting lug, a second lifting lug and a third lifting lug and comprises at least two truss pieces, the two truss pieces are fixedly connected, and the first lifting lug and the second lifting lug are fixedly arranged on the two truss pieces respectively; the center of gravity of the truss sheet unit is positioned below the connecting line of the first lifting lug and the second lifting lug; the first lifting component comprises a first lifting rope hinged with the first lifting lug; the second hoisting component comprises a second hoisting rope hinged with the second lifting lug; and the two ends of the tensioning member are respectively hinged with the first lifting rope and the third lifting lug, and the tensioning member is used for changing the length of the tensioning member to tension the third lifting lug and the first lifting rope so as to prevent the truss sheet unit from tilting. The utility model provides a arch structure purlin piece prevents hoist and mount system of usefulness of heeling can prevent to heel in hoist and mount arch structure purlin piece and cover, improves the hoist and mount security of arch structure purlin piece.
Description
Technical Field
The utility model relates to a purlin piece hoist and mount technical field in the arch bridge construction specifically is a hoist and mount system that structure purlin piece of encircleing prevented the heeling usefulness.
Background
In the field of engineering construction, arch structures are generally applied by virtue of good stress characteristics, and generally, truss sheets of the arch structures are erected by a support method, while a support-free method of truss sheets of the arch structures is adopted due to the obvious reduction of construction facilities. The method for erecting the segmental truss pieces by the support-free method comprises the steps of firstly horizontally hoisting and then adjusting the posture in the air to enable the truss pieces to conform to the installation line shape of an arch structure, wherein in the posture adjustment process of the truss pieces, the gravity center position of the truss pieces is continuously changed, and when the gravity center of the truss pieces is close to a hanging point for connection, the truss pieces are prone to lateral overturning under the action of transverse wind load, so that the probability of safety accidents is increased.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a hoist and mount system that formula purlin piece of encircleing was prevented heeling and is used prevents to cover in hoist and mount that arch structure purlin piece from heeling, improves the hoist and mount security of arch structure purlin piece.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a hoist and mount system that ARC structure purlin piece anti-roll was used, hoist and mount system includes:
the truss piece unit is provided with a first lifting lug, a second lifting lug and a third lifting lug, the truss piece unit comprises at least two truss pieces, the two truss pieces are fixedly connected, and the first lifting lug and the second lifting lug are fixedly arranged on the two truss pieces respectively; the center of gravity of the truss sheet unit is positioned below a connecting line of the first lifting lug and the second lifting lug;
a first lifting member comprising a first lifting rope articulated with the first lifting lug;
the second lifting component comprises a second lifting rope hinged with the second lifting lug;
and a tension member having both ends hinged to the first lifting rope and the third lifting lug, respectively, the tension member being configured to change its length to tension the third lifting lug and the first lifting rope to prevent the truss panel unit from tilting.
On the basis of the technical scheme, the two truss sheets are an upper truss sheet and a lower truss sheet, the first lifting lug is located at a lower chord node of the upper truss sheet, and the second lifting lug is located at an upper chord node of the lower truss sheet.
On the basis of the technical scheme, the third lifting lug is positioned at an upper chord node of the upper truss sheet.
On the basis of the technical scheme, the tensioning member comprises a chain block and a safety steel wire rope; the first lifting rope, the safety steel wire rope, the chain block and the third lifting lug are connected in sequence.
On the basis of the technical scheme, the safety steel wire rope is connected with the first lifting rope through a rope clamp.
On the basis of the above technical solution, the first hoisting member includes:
the first lifting rope is connected with the first lifting rope and used for driving the first lifting rope to contract so as to adjust the height of the first lifting lug.
On the basis of the technical scheme, the first lifting rope is connected with the first lifting lug through a first shackle.
On the basis of the above technical solution, the second hoisting member includes:
and the second jack is connected with the second lifting rope and is used for driving the second lifting rope to contract so as to adjust the height of the second lifting lug.
On the basis of the technical scheme, the second lifting rope is connected with the second lifting lug through a second shackle.
Compared with the prior art, the utility model has the advantages of:
the utility model provides a hoisting system for preventing the truss sheet of the arch structure from inclining, which uses two hoisting ropes to be respectively hinged with a hoisting lug on the truss sheet unit, and the two hoisting ropes can adjust the posture of the truss sheet unit to be in line with the installation line shape of the truss sheet unit in the hoisting process of the truss sheet unit; and after the posture of the truss sheet unit is adjusted, tensioning by using a tensioning member. When the truss sheet unit is transversely loaded, the tensioning member can provide tension for the truss sheet unit, the truss sheet unit is prevented from rotating out of the plane around the connection of the first lifting lug and the second lifting lug, the truss sheet unit is enabled to return to a vertical plane without tilting, and the lifting safety of the truss sheet of the arch structure is improved.
Drawings
Fig. 1 is a schematic view of a hoisting system for preventing a truss sheet of an arch structure from inclining in an embodiment of the present invention;
FIG. 2 is an enlarged view of I in FIG. 1;
FIG. 3 is an enlarged view of J in FIG. 1;
in the figure: 1. a truss sheet unit; 11. a truss sheet; 12. a first lifting lug; 13. a second lifting lug; 14. a third lifting lug; 2. a first lifting rope; 21. a first shackle; 3. a second lifting rope; 31. a second shackle; 4. a tension member; 41. chain rewinding; 42. an insurance wire rope; 43. rope clamping; A. the center of gravity.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
Examples
Referring to fig. 1-3 shown, the embodiment of the utility model provides an encircle hoist and mount system that structure purlin piece anti-roll was used, hoist and mount system includes:
the truss sheet unit 1 is provided with a first lifting lug 12, a second lifting lug 13 and a third lifting lug 14, the truss sheet unit 1 comprises at least two truss sheets 11, the two truss sheets 11 are fixedly connected, and the first lifting lug 12 and the second lifting lug 13 are fixedly arranged on the two truss sheets 11 respectively; the gravity center A of the truss sheet unit 1 is positioned below the connecting line of the first lifting lug 12 and the second lifting lug 13;
a first lifting member comprising a first lifting rope 2 hinged with the first lifting lug 12;
a second hoisting member comprising a second hoisting rope 3 hinged to the second lifting lug 13;
and a tension member 4 having both ends hinged to the first lifting rope 2 and the third lifting lug 14, respectively, the tension member 4 being adapted to change its length to tension the third lifting lug 14 and the first lifting rope 2, thereby preventing the truss unit 1 from being tilted.
Further, the two truss pieces 11 are an upper truss piece and a lower truss piece, the first lifting lug 12 is located at a lower chord node of the upper truss piece, and the second lifting lug 13 is located at an upper chord node of the lower truss piece. The third lifting lug 14 is positioned at the upper chord node of the upper truss sheet.
The utility model discloses specific hoist and mount process of embodiment does:
two truss sheets 11 fixedly connected into a whole structure are provided, more specifically, the two truss sheets 11 are divided into an upper truss sheet and a lower truss sheet, a first lifting lug 12 is arranged at a lower chord node of the upper truss sheet, a third lifting lug 14 is arranged at an upper chord node of the upper truss sheet, and a second lifting lug 13 is arranged at an upper chord node of the lower truss sheet. Before the truss sheet unit 1 is lifted, the upper truss sheet and the lower truss sheet are both in a horizontal state, are hinged on a first lifting lug 12 by using a first lifting rope 2, are hinged on a second lifting lug 13 by using a second lifting rope 3, are hinged on a third lifting rope 4 by using the lower end of a tension member 4, the upper end of the tension member 4 is hinged on the first lifting lug 12, and in an initial state, the tension member 4 is in a loose state. Synchronously lifting the first lifting rope 2 and the second lifting rope 3, lifting the upper truss piece and the lower truss piece off the ground and then stopping; lifting the second lifting rope 3 independently to enable the truss sheet unit 1 to rotate anticlockwise until the posture of the truss sheet unit 1 in the air approaches to the installation posture; the tensioning mechanism 4 shortens its length to tension the third lifting lug 14 with the first lifting rope 2, so that the tensioning mechanism provides a pulling force to the upper truss; and finally, continuously and synchronously lifting the first lifting rope 2 and the second lifting rope 3 to lift the truss sheet unit 1 to the designed installation position.
In this embodiment, the center of the truss unit 1 is located below the connecting line of the first lifting lug 12 and the second lifting lug 13, and the connecting line of the first lifting lug 12 and the second lifting lug 13 is an overturning line, so that the truss unit 1 can play a role in limiting the lateral overturning of the truss unit 1 under the action of the tensioned tensioning mechanism 4.
Specifically, the tension member 4 includes a chain block 41 and a safety wire 42; the first lifting rope 2, the safety steel wire rope 42, the chain block 41 and the third lifting lug 13 are connected in sequence. The safety steel wire rope 42 is tensioned by controlling the distance between the two ends of the inverted chain 41, so that the safety steel wire rope 42 can provide tension for the truss sheet unit, the truss sheet unit is prevented from rotating out of the plane around the connection of the first lifting lug and the second lifting lug, the truss sheet unit is ensured to return to a vertical plane without tilting, and the hoisting safety of the truss sheet of the arch structure is improved.
More specifically, the safety wire 42 is connected to the first lifting rope 2 by a rope clamp 43. The rope clamp 43 can securely connect the upper end of the safety wire 42 to the first lifting rope 2.
Preferably, the first lifting member comprises a first crane connected to the first lifting rope 2 for driving the first lifting rope 2 to retract to adjust the height of the first lifting lug 12. Referring to fig. 2, the first lifting rope 2 is connected to the first lifting lug 12 through a first shackle 21.
Preferably, the second hoisting member comprises a second jack connected to the second hoisting rope 3 for driving the second hoisting rope 3 to retract for adjusting the height of the second lifting lug 13. Referring to fig. 3, the second lifting rope 3 is connected to the second lifting lug 13 via a second shackle 31.
In this embodiment, the first lifting rope 2 and the second lifting rope 3 are respectively lifted by using the first jack and the second jack, and the first lifting rope 2 and the second lifting rope 3 can adjust the posture of the truss unit to be in line with the installation line shape of the truss unit in the lifting process of the truss unit.
The present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered to be within the protection scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (9)
1. The utility model provides a hoist and mount system that ARC structure purlin piece anti-roll was used which characterized in that, hoist and mount system includes:
the truss piece unit (1) is provided with a first lifting lug (12), a second lifting lug (13) and a third lifting lug (14), the truss piece unit (1) comprises at least two truss pieces (11), the two truss pieces (11) are fixedly connected, and the first lifting lug (12) and the second lifting lug (13) are fixedly arranged on the two truss pieces (11) respectively; the gravity center (A) of the truss sheet unit (1) is positioned below the connecting line of the first lifting lug (12) and the second lifting lug (13);
a first lifting member comprising a first lifting rope (2) articulated with the first lifting lug (12);
a second hoisting member comprising a second hoisting rope (3) articulated with the second lifting lug (13);
and a tension member (4) having both ends hinged to the first lifting rope (2) and the third lifting rope (14), respectively, wherein the tension member (4) is used for changing the length thereof to tension the third lifting rope (14) and the first lifting rope (2) so as to prevent the truss sheet unit (1) from rolling.
2. An arch truss anti-roll hoist system as claimed in claim 1, wherein the two truss sheets (11) are an upper truss sheet and a lower truss sheet, the first lifting lug (12) is located at a lower chord node of the upper truss sheet, and the second lifting lug (13) is located at an upper chord node of the lower truss sheet.
3. An arch truss anti-roll hoist system as claimed in claim 2, wherein the third lifting lug (14) is located at the upper chord node of the upper truss.
4. An arch truss anti-roll hoist system as claimed in claim 1 or 3, wherein said tension member (4) comprises a chain block (41) and a safety cable (42); the first lifting rope (2), the safety steel wire rope (42), the chain block (41) and the third lifting lug (14) are connected in sequence.
5. An arch truss anti-roll hoist system as claimed in claim 4, wherein the safety line (42) is connected to the first hoisting line (2) by a rope clip (43).
6. An arched structure truss sheet anti-roll hoist system as claimed in claim 1, wherein the first hoist member comprises:
the first lifting rope (2) is connected with the first lifting crane and used for driving the first lifting rope (2) to contract so as to adjust the height of the first lifting lug (12).
7. An arch truss blade anti-roll hoist system as claimed in claim 1, wherein the first lifting rope (2) is connected to the first lifting lug (12) by a first shackle (21).
8. An arched structure truss sheet anti-roll hoist system as claimed in claim 1, wherein the second hoisting member comprises:
and the second jack is connected with the second lifting rope (3) and is used for driving the second lifting rope (3) to contract so as to adjust the height of the second lifting lug (13).
9. An arch truss blade anti-roll hoist system as claimed in claim 1, wherein the second lifting rope (3) is connected to the second lifting lug (13) by a second shackle (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020111561.XU CN212050137U (en) | 2020-01-17 | 2020-01-17 | Hoisting system for preventing truss sheet of arch structure from inclining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020111561.XU CN212050137U (en) | 2020-01-17 | 2020-01-17 | Hoisting system for preventing truss sheet of arch structure from inclining |
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| Publication Number | Publication Date |
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| CN212050137U true CN212050137U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020111561.XU Active CN212050137U (en) | 2020-01-17 | 2020-01-17 | Hoisting system for preventing truss sheet of arch structure from inclining |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113479774A (en) * | 2021-06-30 | 2021-10-08 | 中建科工集团有限公司 | Truss structure dismantling method |
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2020
- 2020-01-17 CN CN202020111561.XU patent/CN212050137U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113479774A (en) * | 2021-06-30 | 2021-10-08 | 中建科工集团有限公司 | Truss structure dismantling method |
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