CN212318045U - Tunnel anchor narrow space prestress steel beam gliding installation device - Google Patents
Tunnel anchor narrow space prestress steel beam gliding installation device Download PDFInfo
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- CN212318045U CN212318045U CN202021030745.XU CN202021030745U CN212318045U CN 212318045 U CN212318045 U CN 212318045U CN 202021030745 U CN202021030745 U CN 202021030745U CN 212318045 U CN212318045 U CN 212318045U
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- wire rope
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Abstract
The utility model is suitable for an engineering tunnel anchor construction field provides a tunnel anchor narrow space prestressing steel bundle gliding installation device, include main hoist engine, vice hoist engine and be used for installing the diverting pulley at tunnel anchor entrance to a cave top, the output of main hoist engine pulls out antenna wire rope, antenna wire rope walks around behind the diverting pulley, its front end anchor is on preceding anchor face anchor point, install a plurality of slider on the antenna wire rope, prestressing steel bundle hang through the suspender extremely slider, the output of vice hoist engine pulls out and pull back wire rope, pull back wire rope and prestressing steel bundle's anchor head and be connected, adopt this device to solve the big technical problem that the safe risk is high of the current prestressing steel strand wires installation degree of difficulty to more economy, efficiency, safety have high using value.
Description
Technical Field
The utility model belongs to engineering tunnel anchor construction field especially relates to a narrow space prestressing force steel bundle gliding installation device of tunnel anchor.
Background
The suspension bridge can well utilize the performance of materials and the high span ratio effect of the stiffening girder, has the characteristics of material conservation, light dead weight, high capability of coping with complex terrain and geological conditions and the like, and is favored by more and more builders. The suspension bridge tunnel anchor has the advantages of low manufacturing cost, environmental friendliness and the like, and is accepted by people. The main cable is a 'life line' of the suspension bridge, is the most important stressed component in the suspension bridge, bears all static loads and dynamic loads of a full-bridge superstructure, and after the main cable strands are scattered, the tension of the strands is transmitted to an anchoring system through the pull rod and the connector, and the anchoring system is called as a 'life root' of the suspension bridge life line.
The tunnel anchor anchoring system in China mostly adopts a prestressed structure, and compared with a section steel anchor frame anchoring system, the prestressed anchoring system saves steel and is simple and convenient to construct. The tunnel anchor body is generally large in size, the prestressed steel bundles are relatively long and relatively large in number, the use of construction equipment is relatively limited due to narrow space, the installation difficulty of the prestressed steel bundles, particularly the installation difficulty of the whole prestressed steel bundles is relatively high, the installation of the steel strand is realized by dragging the steel strand on the primary support of the tunnel anchor by using a general method, the prestressed steel strand, particularly the coated epoxy coating, is seriously scratched, the quality of the steel strand is reduced, and the service life of a tunnel anchor anchoring system is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, an object of the utility model is to provide a narrow space prestressing steel strand gliding installation device of tunnel anchor aims at solving current tunnel anchor system and has the installation degree of difficulty big and the serious technical problem of prestressing steel strand's epoxy coating scratch.
The utility model adopts the following technical scheme:
the tunnel anchor narrow space prestress steel beam downslide installation device comprises a main winch, an auxiliary winch and a steering pulley, wherein the steering pulley is used for being installed at the top of a tunnel anchor hole, an output end of the main winch pulls out an antenna steel wire rope, the antenna steel wire rope bypasses behind the steering pulley, the front end of the antenna steel wire rope is anchored on a front anchor surface anchoring point, a plurality of sliding devices are installed on the antenna steel wire rope, the prestress steel beam is suspended to the sliding devices through hanging belts, an output end of the auxiliary winch pulls out a reverse pull steel wire rope, and the reverse pull steel wire rope is connected with an anchor head of the prestress steel beam.
Furthermore, a conical thin steel plate is mounted at the front end of the prestressed steel beam, and a steel ring is arranged at the conical tip of the conical thin steel plate.
Furthermore, the number of the front anchor surface anchoring points is three, and two adjacent anchoring points are arranged at an angle of 60 degrees.
The utility model has the advantages that: the utility model provides a tunnel anchor narrow space prestressing steel bundle gliding installation device through antenna wire rope with anti-wire rope's synergism, has solved the big, high technical problem of safe risk of the current prestressing steel strand wires installation degree of difficulty to adopt this device installation whole bundle prestressing steel strand wires more economy, efficiency, safety, have high using value.
Drawings
Fig. 1 is a schematic view illustrating an installation of an antenna wire rope in an installation apparatus provided in an embodiment of the present invention;
fig. 2 is a schematic view illustrating installation of prestressed steel bundles in an installation apparatus according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating the installation of a reverse pull wire rope in the installation apparatus according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a conical thin steel plate in a mounting device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of arrangement of front anchor surface anchor points in the installation device provided by the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
Fig. 1 shows the structure of the tunnel anchor narrow space prestress steel beam downward sliding installation device provided by the embodiment of the present invention, and only the parts related to the embodiment of the present invention are shown for convenience of description.
As shown in fig. 1-3, the tunnel anchor narrow space prestress steel beam downward-sliding installation device provided by this embodiment includes a main hoist 1, an auxiliary hoist 2 and a diverting pulley 3 for being installed at the top of a tunnel anchor hole, an output end of the main hoist 1 pulls out an antenna steel wire rope 4, the front end of the antenna steel wire rope 4 is anchored on a front anchor surface anchoring point 5 after the diverting pulley 3 is bypassed, the antenna steel wire rope 4 is provided with a plurality of sliding devices 6, a prestress steel beam 7 is suspended to the sliding devices 6 through a hanging strip, an output end of the auxiliary hoist 2 pulls out a reverse-pulling steel wire rope 8, and the reverse-pulling steel wire rope 8 is connected with an anchor head of the prestress steel beam 7.
When the device works, a main winch is placed outside a tunnel anchor hole, an antenna steel wire rope is pulled out from the output end of the main winch, the antenna steel wire rope enters the tunnel anchor after passing through a steering pulley at the top of the tunnel anchor hole, then the antenna steel wire rope is anchored on an anchoring point of a front anchor surface, a truck crane is adopted outside the tunnel anchor hole, a soft sling is used as a lifting sling at the anchor head of a prestressed steel beam, after the prestressed steel beam is lifted to be separated from the ground, the sling is installed at a position which is about 5m away from the end head of a tensioning end of the prestressed steel beam and is hung on the antenna steel wire rope through a sliding device, the truck crane boom is slowly lowered, the tensioning end of the prestressed steel beam slides into the hole on the antenna steel wire rope, when the 1/3 length of the prestressed steel beam enters the tunnel anchor hole, the truck crane boom is temporarily stopped to be lowered, the truck crane boom is hung on the antenna, the prestressed steel beam continues to slide into the hole along the antenna steel wire rope, when the length of the prestressed steel beam in the hole reaches 2/3, the operation steps are repeated, when the anchor head at the rear end of the prestressed steel beam is lowered into the hole, the counter-pull steel wire rope is connected with the anchor head of the prestressed steel beam, at the moment, the connection between the lifting hook of the crane boom and the steel beam is released, the steel beam slides downwards at a constant speed under the combined action of the self gravity of the steel beam and the counter-pull steel wire rope of the auxiliary hoister, then the tensioning end of the prestressed steel beam is lowered to the front anchor surface along the antenna steel wire rope, after the tensioning end of the prestressed steel beam reaches the front anchor surface, the tension of the antenna steel wire rope is adjusted, the angle of the front end of the prestressed steel beam is basically consistent with the angle of the prestressed pipeline, then the counter-pull steel wire rope is loosened to penetrate, the packaging belt of the steel beam is stripped at the connector, namely, the sliding and the installation of the whole prestressed steel beam are completed.
As a specific structure, as shown in fig. 4, in this embodiment, the prestressed steel strand is composed of a plurality of epoxy coated steel strands, the front end of the whole strand is a tensioning end, the rear end of the whole strand is provided with an anchor head, the whole strand is installed in a sliding manner, the front end of the prestressed steel strand is firstly inserted into a prestressed pipe of an anchoring system during installation, the front end of the prestressed steel strand is provided with a conical thin steel plate 9, the thickness of the conical thin steel plate is slightly larger than that of the steel strand by 2mm, the conical tip of the conical thin steel plate is provided with a steel ring 10, so that the tensioning end of the prestressed steel strand extends out of an anchor backing plate of the prestressed pipe, and after the prestressed steel strand is installed in.
In addition, as shown in fig. 5, the number of the front anchor surface anchoring points is three, and two adjacent anchoring points are arranged at an angle of 60 degrees, so that objects in the tunnel anchor hole can be conveniently transported to the designated position of the front anchor surface through the antenna steel wire rope.
The utility model provides a tunnel anchor narrow space prestressing steel bundle gliding installation device through antenna wire rope with anti-wire rope's synergism, has solved the big, high technical problem of safe risk of the current prestressing steel strand wires installation degree of difficulty to adopt this device installation whole bundle prestressing steel strand wires more economy, efficiency, safety, have high using value.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides a narrow space prestressing steel beam gliding installation device of tunnel anchor, a serial communication port, installation device includes main hoist engine, vice hoist engine and is used for installing the diverting pulley at tunnel anchor entrance to a cave top, the output of main hoist engine pulls out antenna wire rope, antenna wire rope walks around behind the diverting pulley, its front end anchor is on preceding anchor face anchor point, install a plurality of slider on the antenna wire rope, the prestressing steel beam hang extremely through the suspender slider, the output of vice hoist engine is pulled out and is reversed drawn wire rope, reverse drawing wire rope and prestressing steel beam's anchor head and being connected.
2. The tunnel anchor narrow space prestress steel beam downward sliding installation device according to claim 1, wherein a cone-shaped thin steel plate is installed at the front end of the prestress steel beam, and a cone tip of the cone-shaped thin steel plate is provided with a steel ring.
3. The device for installing the prestressed steel beam in the narrow space of the tunnel anchor according to claim 1, wherein the anchoring points on the front anchoring surface are three in total, and two adjacent anchoring points are arranged at an angle of 60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021030745.XU CN212318045U (en) | 2020-06-08 | 2020-06-08 | Tunnel anchor narrow space prestress steel beam gliding installation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021030745.XU CN212318045U (en) | 2020-06-08 | 2020-06-08 | Tunnel anchor narrow space prestress steel beam gliding installation device |
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| CN212318045U true CN212318045U (en) | 2021-01-08 |
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| CN202021030745.XU Active CN212318045U (en) | 2020-06-08 | 2020-06-08 | Tunnel anchor narrow space prestress steel beam gliding installation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236316A (en) * | 2021-05-11 | 2021-08-10 | 中交二公局第二工程有限公司 | Method for mounting prestressed finished cable of tunnel anchor |
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2020
- 2020-06-08 CN CN202021030745.XU patent/CN212318045U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236316A (en) * | 2021-05-11 | 2021-08-10 | 中交二公局第二工程有限公司 | Method for mounting prestressed finished cable of tunnel anchor |
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