CN215208107U - Variable-span cable loading and hoisting device - Google Patents
Variable-span cable loading and hoisting device Download PDFInfo
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- CN215208107U CN215208107U CN202022973374.5U CN202022973374U CN215208107U CN 215208107 U CN215208107 U CN 215208107U CN 202022973374 U CN202022973374 U CN 202022973374U CN 215208107 U CN215208107 U CN 215208107U
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Abstract
The utility model discloses a become span cable and carry hoisting device, it includes the girder, the middle part of girder is cable and carry hoisting mechanism, the both ends of girder are two spars, become to stride pushing mechanism through the installation on the spar, the sideslip spout and the sideslip slide of cooperation activity, need not external force, can carry out the variable span action by oneself during the construction, and become span action science, it is steady, no potential safety hazard, be applicable to the suspension bridge installation of main cable interval change, the practicality that the cable carried the hoist is improved, the application range is enlarged, the suspension bridge installation of main cable interval change provides the best hoisting tool.
Description
Technical Field
The utility model belongs to cable load crane field for the engineering machine tool especially relates to a become span cable load crane device.
Background
With the vigorous development of bridges in the world, suspension bridges and cable-stayed bridges are widely applied. At present, the suspension bridge and the stay cable are installed by adopting a cable crane in China, but the variable-span cable crane has no precedent. Therefore, the existing cable crane does not have the function of changing span, so that the requirements of a plurality of complex engineering sites cannot be met, the application of the cable crane is limited, and the efficiency of production and construction is influenced.
To the unable problem of realizing becoming the stride of current cable crane, the utility model discloses a become stride footpath cable crane and carried load device, it need not external force, can become by oneself during the construction and stride the footpath action, is showing the practicality and the application scope effect that promote cable crane.
Disclosure of Invention
The utility model discloses a become span cable and carry on hoisting apparatus need not external force, can become the span action by oneself during the construction, becomes span action science, steady moreover, no potential safety hazard.
A variable-span cable-loaded hoisting device comprises a main beam 1, wherein a cable-loaded hoisting mechanism 2 is arranged in the middle of the main beam 1, and two wing beams 3 are arranged at two ends of the main beam 1; the cable-loaded hoisting mechanism 2 is connected with a steel strand 21 provided with a lifting appliance; a variable-span jacking mechanism 31 is mounted on the spar 3 in the direction away from the main beam 1, a transverse sliding groove 32 is formed in the lower end of the spar 3, a transverse sliding seat 33 is matched with the transverse sliding groove 32, and the transverse sliding seat 33 is connected with the variable-span jacking mechanism 31; a walking end beam 4 is connected below the transverse sliding seat 33, the walking end beam 4 comprises a supporting beam 41 and a plurality of groups of walking wheels 42, the supporting beam 41 is fixedly connected with the transverse sliding seat 33, and the walking wheels 42 are arranged below the supporting beam 41; the running wheels 42 run above the main cable 5 of the suspension bridge in a matched manner.
Further, the walking end beam 4 is hinged with the transverse sliding seat 33 by a pin shaft.
Further, the running wheels 42 are 4 sets.
Further, the span-variable jacking mechanism 31 is a traversing cylinder.
Further, the variable-span pushing mechanism 31 uses a synchronous control platform, so that the safety and the stability of the variable span can be improved.
The design ensures that when the advancing distance of the walking end beam 4 is L, the maximum safe transverse pushing or transverse pulling distance d of the variable-span pushing mechanism 31 is kept to be d/L less than or equal to 3/100.
Furthermore, a displacement space is arranged between the walking wheels 42 and the main cable 5, and during the walking process, when the span is changed, the displacement of the walking wheels 42 relative to the main cable 5 is ensured to be in the displacement space. The design is favorable for improving the safety and the stability during the span change, and when the advancing distance of the walking end beam 4 is L, the maximum safe transverse pushing or transverse pulling distance d of the span-changing jacking mechanism 31 is kept to be d/L less than or equal to 5/100.
Further, the walking end beam 4 and the main beam 1 adopt an oblique crossing design, and the oblique crossing angle is set to be (the included angle between the tangent of the main cable 5 and the main beam 1 in the maximum span and the included angle between the tangent of the main cable 5 and the main beam 1 in the minimum span)/2. The design is favorable for improving the safety and the stability during the span change, and when the advancing distance of the walking end beam 4 is L, the maximum safe transverse pushing or transverse pulling distance d of the span-changing jacking mechanism 31 is kept to be d/L less than or equal to 6/100.
Furthermore, a circle of flange 421 is arranged in the middle of the running wheel 42, and the main cable 5 is provided with a groove 51 matched with the flange 421. The design can further improve the safety and the stability during the span changing, and when the advancing distance of the walking end beam 4 is L, the maximum safe transverse pushing or transverse pulling distance d of the span-changing pushing mechanism 31 is kept to be d/L less than or equal to 10/100.
The utility model has the advantages that:
1. the utility model provides a become span cable and carry on hoisting apparatus, need not external force, can carry out the action of becoming the span by oneself during the construction, and become span action science, steady, no potential safety hazard, be applicable to the suspension bridge installation that the main push-towing rope interval changes, improved the practicality of cable load crane, enlarged application range, provide the best hoisting tool for the suspension bridge installation that the main push-towing rope interval changes;
2. the utility model realizes that the walking end beam connected with the transverse sliding seat can change the span by arranging the transverse sliding chute, the transverse sliding seat and the variable span pushing mechanism connected with the transverse sliding seat;
3. the span-variable pushing mechanism can ensure that the span-variable cable-borne lifting device of the utility model has uniform stress and stable gravity center when the span is varied, and can improve the safety and stability of the span variation;
4. the displacement space is arranged between the walking wheels and the main cable, so that when the span is changed, the walking wheels can be displaced in the displacement space relative to the main cable, the walking wheels and the main cable can not be separated, and the transverse pushing or transverse pulling distance of the span-changing pushing mechanism can be relatively increased, so that the safety and the stability when the span is changed and the efficiency of the span change are improved;
5. the walking end beam and the main beam adopt an oblique crossing design, and the oblique crossing angle is set to be (the included angle between the tangent line of the main cable 5 and the main beam 1 in the maximum span and the included angle between the tangent line of the main cable 5 and the main beam 1 in the minimum span)/2, so that the design is beneficial to improving the transverse pushing or transverse pulling distance of the variable-span pushing mechanism, and the safety and the stability in the variable-span process and the variable-span efficiency are improved;
6. the middle part of the walking wheel is provided with a circle of flange, the main cable is provided with a groove matched with the flange, when the span is changed, the walking wheel and the main cable are tightly connected, the transverse pushing or transverse pulling distance of the span-changing pushing mechanism can be further increased by the design, and the safety and the stability when the span is changed and the span-changing efficiency are improved.
Drawings
Fig. 1 is a general view of a variable span cable-mounted crane according to the present invention;
FIG. 2 is an assembly view of the sliding chute and the sliding seat of the present invention;
FIG. 3 is a cross-sectional view of the sliding chute of the present invention;
FIG. 4 is a cross-sectional view of the cross slide of the present invention;
FIG. 5 is a state diagram of the L-shaped time varying span of the traveling end beam of the present invention;
fig. 6 is a working diagram of the walking end beam and the main cable in embodiment 1 of the present invention;
fig. 7 is a working diagram of the walking end beam and the main cable in embodiment 2 of the present invention;
fig. 8 is an oblique cross view of the walking end beam and the main beam in embodiment 3 of the present invention;
fig. 9 is a schematic view of an included angle between a tangent line of a main cable and a main beam when the maximum span of the variable-span cable loading crane of the present invention is reached;
fig. 10 is an enlarged view of an included angle between a tangent line of a main cable and a main beam when the maximum span of the variable-span cable load-carrying device of the present invention is reached;
fig. 11 is a schematic view of an included angle between a tangent line of a main cable and a main beam when the variable-span cable load-carrying device of the present invention has a minimum span;
fig. 12 is an enlarged view of an included angle between a tangent line of a main cable and a main beam when the minimum span of the variable-span cable load-carrying device of the present invention is reached;
FIG. 13 is a working diagram of the traveling wheels and the main cable according to embodiment 4 of the present invention;
in the figure, 1-main beam, 2-cable-carried hoisting mechanism, 21-steel strand, 3-wing beam, 31-variable span jacking mechanism, 32-transverse sliding chute, 33-transverse sliding seat, 4-walking end beam, 41-supporting beam, 42-walking wheel, 421-flange, 5-main cable and 51-groove
Detailed Description
Example 1
A variable-span cable-loaded lifting device comprises a main beam 1, wherein a cable-loaded lifting mechanism 2 is arranged in the middle of the main beam 1, and two wing beams 3 are arranged at two ends of the main beam 1; the cable-loaded hoisting mechanism 2 is connected with a steel strand 21 provided with a lifting appliance; a variable-span jacking mechanism 31 is installed on the spar 3 in the direction away from the main beam 1, a transverse sliding groove 32 is formed in the lower end of the spar 3, as shown in fig. 3, a transverse sliding seat 33 is matched with the transverse sliding groove 32, as shown in fig. 4, and the transverse sliding seat 33 is connected with the variable-span jacking mechanism 31; a walking end beam 4 is connected below the transverse sliding seat 33, the walking end beam 4 comprises a supporting beam 41 and a plurality of groups of walking wheels 42, the supporting beam 41 is fixedly connected with the transverse sliding seat 33, and the walking wheels 42 are arranged below the supporting beam 41; the running wheels 42 run above the main cable 5 of the suspension bridge in a matched manner.
The walking end beam 4 is hinged with the transverse sliding seat 33 by a pin shaft, the walking wheels 42 are 4 groups, and the variable span pushing mechanism 31 is a transverse oil cylinder.
The span-variable pushing mechanism 31 uses a synchronous control platform, so that the safety and the stability of the span change can be improved.
When the device works, the traveling wheels 42 are positioned on the main cable 5, and when the span is required to be changed, the connected transverse sliding seat 33 is transversely pushed or pulled through the span-changing jacking mechanism 31, and the transverse sliding seat 33 moves in the transverse sliding chute 32, as shown in fig. 2; meanwhile, the walking end beam 4 connected with the transverse sliding seat 33 has the outward pushing or inward retracting action, and the main cable 5 is tightly clamped with the walking wheels 42 of the walking end beam 4 and has a certain clamping effect, as shown in fig. 6, the main cable 5 is pushed outward or inward retracted along with the action of the walking end beam 4, so that the effect of changing the span is achieved. After the span is changed, the cable-loaded hoisting mechanism hoists through the steel strand.
As shown in fig. 5, when the variable-span cable crane is operated, the span in the initial state is B1, the traverse distance is d by the traverse operation of the variable-span jack mechanism 31, and the span is B2 after the variable-span cable crane advances by L distance, in which:
d＝(B1-B2)/2
through a large number of experiments, when the span-variable cable loading and hoisting device works in a span-variable mode, and the advancing distance of the walking end beam 4 is L, the maximum safe transverse pushing or transverse pulling distance d of the span-variable pushing mechanism 31 is kept to be equal to or less than 3/100. In this range, the main cable can not be separated from the limit of the walking wheels, and the variable span action is stable and safe.
Example 2
On the basis of embodiment 1, a variable-span cable load-bearing device is provided, wherein a displacement space is arranged between the travelling wheels 42 and the main cable 5, and during travelling, when the span is changed, the displacement of the travelling wheels 42 relative to the main cable 5 is ensured to be within the displacement space, as shown in fig. 7.
In the embodiment, the design that the walking wheels are tightly matched with the main cable in the embodiment 1 is changed, and the displacement space is arranged between the walking wheels and the main cable, so that the design is favorable for improving the safety and the stability during high span.
Through a large number of experiments, when the span-variable cable loading and hoisting device works in a span-variable mode, and the advancing distance of the walking end beam 4 is L, the maximum safe transverse pushing or transverse pulling distance d of the span-variable pushing mechanism 31 is kept to be equal to or less than 5/100. Compared with the embodiment 1, the main cable is not easy to be separated from the limit of the traveling wheels, so that the maximum safe transverse pushing or transverse pulling distance of the variable-span jacking mechanism is correspondingly improved.
Example 3
On the basis of embodiment 1, the variable-span cable load-bearing device is characterized in that the walking end beam 4 and the main beam 1 are designed in an oblique crossing mode, and the oblique crossing angle is set to be (the included angle between the tangent line of the main cable 5 and the main beam 1 in the maximum span and the included angle between the tangent line of the main cable 5 and the main beam 1 in the minimum span)/2.
As shown in fig. 8, the angle of the oblique crossing between the walking end beam 4 and the main beam 1 is θ;
as shown in fig. 9 and 10, the included angle between the tangent of the main cable 5 and the main beam 1 is α at the maximum span;
as shown in fig. 11 and 12, the included angle between the tangent of the main cable 5 and the main beam 1 at the minimum span is β;
setting:
θ＝(α+β)/2
the design reduces the transverse displacement of the main cable relative to the walking end beam, also reduces the transverse stress of the main cable when the span is changed, and is beneficial to improving the safety and the stability when the span is changed.
Through a large number of experiments, when the span-variable cable loading and hoisting device works in a span-variable mode, and the advancing distance of the walking end beam 4 is L, the maximum safe transverse pushing or transverse pulling distance d of the span-variable pushing mechanism 31 is kept to be equal to or less than 6/100.
Example 4
On the basis of embodiment 1, in the variable-span cable load-bearing device, a circle of flange 421 is arranged in the middle of the running wheel 42, and the main cable 5 is provided with a groove 51 matched with the flange 421, as shown in fig. 13.
The design can greatly improve the constraint action of the traveling wheel on the main cable, so that the main cable is more stable when the span is changed, and the safety and the stability of the main cable can be greatly improved when the span is changed.
Through a large number of experiments, when the span-variable cable loading and hoisting device works in a span-variable mode, and the advancing distance of the walking end beam 4 is L, the maximum safe transverse pushing or transverse pulling distance d of the span-variable pushing mechanism 31 is kept to be equal to or less than 10/100.
And finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A variable span cable loading and hoisting device is characterized in that: the variable-span cable-loaded hoisting device comprises a main beam (1), wherein a cable-loaded hoisting mechanism (2) is arranged in the middle of the main beam (1), and two wing beams (3) are arranged at two ends of the main beam (1); the cable-loaded hoisting mechanism (2) is connected with a steel strand (21) provided with a lifting appliance; a span-variable jacking mechanism (31) is mounted in the direction of the wing beam (3) far away from the main beam (1), a transverse moving chute (32) is arranged at the lower end of the wing beam (3), a transverse moving slide seat (33) is matched with the transverse moving chute (32), and the transverse moving slide seat (33) is connected with the span-variable jacking mechanism (31); a walking end beam (4) is connected below the transverse sliding seat (33), the walking end beam (4) comprises a supporting beam (41) and a plurality of groups of walking wheels (42), the supporting beam (41) is fixedly connected with the transverse sliding seat (33), and the walking wheels (42) are arranged below the supporting beam (41); the running wheels (42) run above the main cable (5) of the suspension bridge in a matched mode.
2. The variable-span cable-borne lifting device according to claim 1, characterized in that: the walking end beam (4) is hinged with the transverse sliding seat (33) by a pin shaft, 4 groups of walking wheels (42) are provided, and the variable-span jacking mechanism (31) is a transverse oil cylinder.
3. The variable-span cable-borne lifting device according to claim 1, characterized in that: the span-variable jacking mechanism (31) uses a synchronous control platform.
4. A variable-span cable-borne lifting device according to any one of claims 1 to 3, characterized in that: when the advancing distance of the walking end beam (4) is L, the maximum safe transverse pushing or transverse pulling distance d of the variable-span jacking mechanism (31) is kept to be not more than 3/100.
5. The variable-span cable-borne lifting device according to claim 1, characterized in that: a displacement space is arranged between the walking wheels (42) and the main cable (5), and during walking, when the span is changed, the displacement of the walking wheels (42) relative to the main cable (5) is ensured to be in the displacement space.
6. The variable-span cable-borne lifting device of claim 5, wherein: when the advancing distance of the walking end beam (4) is L, the maximum safe transverse pushing or transverse pulling distance d of the variable-span jacking mechanism (31) is kept to be not more than 5/100.
7. The variable-span cable-borne lifting device according to claim 1, characterized in that: the walking end beam (4) and the main beam (1) adopt an oblique crossing design, and the oblique crossing angle is set to be (the included angle between the tangent line of the main cable and the main beam when the maximum span and the included angle between the tangent line of the main cable and the main beam when the minimum span) 2.
8. The variable-span cable-borne lifting device of claim 7, wherein: when the advancing distance of the walking end beam (4) is L, the maximum safe transverse pushing or transverse pulling distance d of the variable-span jacking mechanism (31) is kept to be not more than 6/100.
9. The variable-span cable-borne lifting device according to claim 1, characterized in that: a circle of flange (421) is arranged in the middle of the walking wheel (42), and a groove (51) matched with the flange (421) is formed in the main cable (5).
10. The variable span cable crane according to claim 9, wherein: when the advancing distance of the walking end beam (4) is L, the maximum safe transverse pushing or transverse pulling distance d of the variable-span jacking mechanism (31) is kept to be not more than 10/100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022973374.5U CN215208107U (en) | 2020-12-11 | 2020-12-11 | Variable-span cable loading and hoisting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022973374.5U CN215208107U (en) | 2020-12-11 | 2020-12-11 | Variable-span cable loading and hoisting device |
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| Publication Number | Publication Date |
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| CN215208107U true CN215208107U (en) | 2021-12-17 |
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| CN202022973374.5U Active CN215208107U (en) | 2020-12-11 | 2020-12-11 | Variable-span cable loading and hoisting device |
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