Outer sleeve jacking device for construction and maintenance of steel strand inhaul cable

Abstract

The utility model relates to an outer sleeve jacking device for steel strand inhaul cable construction and maintenance, and belongs to the technical field of stay cable construction and maintenance. Comprising a fastener, the fastener is fixed to the periphery of a cable guide pipe, supporting rib plates are symmetrically arranged on the periphery of the fastener, a door-type supporting frame is arranged on the outer side of the fastener, and the supporting rib plates are fixedly connected with the bottom of the door-type supporting frame; a sliding plate is movably arranged in the door type supporting frame; ejector rods are symmetrically arranged on the sliding plate, the bottom ends of the ejector rods are arranged on the sliding plate, and the top ends of the ejector rods are clamped to the lower edge of the waterproof cover; and hoisting equipment is arranged at the top of the gate-type supporting frame, and drives the sliding plate to ascend in the gate-type supporting frame to drive the ejector rod to move synchronously, so that the ejector rod pushes the waterproof cover and the outer sleeve to move upwards. U-shaped clamping grooves are formed in the top ends of the ejector rods correspondingly, and the lower edge of the waterproof cover is clamped in the clamping grooves. The device is simple in structure and convenient to assemble and disassemble, tower outer basket construction is not needed, cost and time are saved, and potential safety hazards caused by high-altitude operation are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of outer sleeve jacking device for steel strand cable construction and overhauling, belong to cable-stayed construction, overhauling technical field. BACKGROUND

[0002] Steel strand cable-stayed cable in construction phase: because steel strand cable system construction procedure is more, period span is big, to avoid rainwater into beam end cable guide pipe during construction, HDPE outer sleeve is usually lowered to cable guide pipe after cable tensioning, after all bridge cable is tensioned, HDPE outer sleeve is lifted, and the installation of subsidiary component cable clamp and built-in damper is carried out.Steel strand cable-stayed cable in operation and overhauling phase: cable needs to be overhauled after operating for a certain period, HDPE outer sleeve needs to be lifted at this time to provide operating space for overhauling.The previous method is to install hoop on HDPE outer sleeve to lift it, which has the following disadvantages: 1) no operation platform outside tower, need to install hanging basket for construction, need to configure lifting or hoisting equipment, high cost and time-consuming and laborious;2) high-altitude operation outside tower, with great safety hazard. SUMMARY

[0003] The utility model provides a kind of outer sleeve jacking device for steel strand cable construction and overhauling to solve the technical problems of the above prior art, with simple structure, easy to assemble and disassemble, no need for tower hanging basket construction, save cost and time, avoid the safety hazard brought by high-altitude operation.

[0004] The utility model discloses the technical scheme that the above problem is solved as follows: a kind of outer sleeve jacking device for steel strand cable construction and overhauling, including fastener, the fastener is fixed to cable guide pipe periphery, two support rib plates are symmetrically arranged on the periphery of the fastener, the inclined arrangement door type support frame is equipped on the outer side of the fastener, the door type support frame is arranged in parallel with cable guide pipe, and the support rib plate is fixedly connected with the bottom of door type support frame;Sliding plate is movably arranged in the door type support frame;Symmetrically equipped with jacking rod on the sliding plate, the jacking rod bottom end is arranged on the sliding plate, and the jacking rod top end is clamped in waterproof cover lower edge;Hoisting equipment is arranged at the top of door type support frame, the hoisting equipment drives the sliding plate to make ascending motion in the door type support frame, drives jacking rod synchronous motion, so that jacking rod pushes waterproof cover and outer sleeve upwards.

[0005] U-shaped clamping groove is formed in the top end of the jacking rod respectively, and the clamping groove is clamped with the lower edge of the waterproof cover.

[0006] The door type support frame includes two symmetrically arranged upright columns, sliding grooves are formed in the inner side of the upright column respectively, and the two sliding grooves are oppositely arranged;Horizontal bar is arranged between the top of the two upright columns, and first lifting lug is arranged at the bottom of the horizontal bar.

[0007] The second lifting lug is symmetrically arranged on both sides of the second lifting lug, and the top rod is sleeved on the positioning plate.

[0008] The lifting device is a lifting cage, the lifting cage is hung on the first lifting lug, and the lifting hook of the lifting cage hooks the second lifting lug.

[0009] The fastener is a two-piece clamp, and the inner surface of the clamp is provided with a rubber pad.

[0010] Compared with the prior art, the jacket pipe jacking device for steel strand cable construction and maintenance has the advantages that the structure is simple, the assembly and disassembly are convenient, the tower external hanging basket construction is not needed, the cost and time are saved, the safety hidden danger caused by high-altitude operation is avoided, and the device is suitable for various working conditions such as concrete beams, steel structure beams and stay cables. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is an installation schematic view of the jacket pipe jacking device for steel strand cable construction and maintenance;

[0012] Figure 2 It is a construction schematic view of the jacket pipe jacking device for steel strand cable construction and maintenance;

[0013] Figure 3 It is a top view of the fastener and the sliding plate;

[0014] Figure 4 It is a schematic view of the fastener structure;

[0015] Figure 5 It is a front view of the door type support frame;

[0016] Figure 6 It is a side view of Figure 5 ;

[0017] Figure 7 It is a front view of the sliding plate;

[0018] Figure 8 It is a side view of Figure 7 ;

[0019] Figure 9 It is a schematic view of the top rod;

[0020] In the drawing, 1 is an HDPE jacket pipe, 2 is a waterproof cover, 3 is a cable guide pipe, 4 is a jacking device, 41 is a fastener, 411 is a clamp, 412 is a rubber pad, 413 is a support rib plate, 42 is a door type support frame, 421 is a horizontal rod, 422 is a vertical column, 423 is a first lifting lug, 43 is a lifting cage, 44 is a top rod, 441 is a clamping groove, 45 is a sliding plate, 451 is a second lifting lug, 452 is a positioning plate, 453 is a bottom plate, 46 is a positioning pin, and 5 is a cable body. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-9 As shown, this embodiment of a steel strand cable construction and maintenance outer sleeve lifting device includes a fastener 41, which is fastened to the outer periphery of the cable guide 3. An HDPE outer sleeve 1 is provided above the cable guide 3, and a waterproof cover 2 is provided between the HDPE outer sleeve 1 and the cable guide 3. Two supporting stiffeners 413 are symmetrically arranged on the outer periphery of the fastener, and an inclined portal frame 42 is provided on the outside of the fastener, parallel to the cable guide 3. The supporting stiffeners 413 are located inside the portal frame 42. The bottom of the portal frame 42 is fixedly connected to the supporting stiffeners 413 by a positioning pin 46. The portal frame 42 includes two opposing columns 422, a crossbar 421 is provided between the tops of the two columns 422, and a first lifting lug 423 is provided at the bottom of the crossbar 421. Vertically penetrating grooves are respectively opened on the inner side of the columns 422, the two grooves are arranged opposite each other, and a sliding plate 45 is provided between the two grooves, which can move along the grooves. A second lifting lug 451 is located at the center of the top of the sliding plate 45, and positioning plates 452 are symmetrically arranged on both sides of the second lifting lug 451. A hoist 43 is hung on the first lifting lug 423, and the lifting hook of the hoist 43 hooks onto the second lifting lug 451. A top rod 44 is symmetrically arranged on the sliding plate 45, and the bottom end of the top rod 44 is fitted with a corresponding positioning plate 452. The positioning plate 452 positions the top rod 44 to prevent misalignment during lifting. U-shaped slots 441 are respectively opened on the top of the top rod 44, and the slots 441 are respectively engaged with the lower edge of the waterproof cover 2. The hoist drives the sliding plate to move upward along the chute, causing the top rods to rise synchronously, so that the top rods push the waterproof cover and the outer sleeve upward together, forming an operating space for construction and maintenance between the cable guide tube and the HDPE outer sleeve.

[0023] like Figure 3 , 4 As shown, the fastener is a clamp 411, which is a two-part Haver structure. The inner surface of the clamp is covered with a rubber pad 412 to prevent scratching the cable guide. Two supporting stiffeners 413 are welded to the outer surface of one half of the clamp.

[0024] The aforementioned skateboard is convex in shape, with the protruding parts at both ends of the skateboard located in corresponding grooves.

[0025] This application features a simple structure and convenient assembly and disassembly, eliminating the need for external tower formwork construction, thus saving costs and time, and avoiding safety hazards associated with high-altitude operations. It is applicable to various working conditions, including concrete beams, steel beams, and cable-stayed structures.

[0026] In addition to the above embodiments, the utility model also includes other implementation manners, and the technical scheme formed by using equivalent transformation or equivalent replacement should fall within the protection scope of the utility model claims.

Claims

1. A sleeve jacking device for steel strand cable construction and maintenance, characterized in that: The utility model provides a kind of cable guide pipe lifting device, including fastener, the fastener is fixed to cable guide pipe outer periphery, two support rib plates are symmetrically arranged on the fastener outer periphery, obliquely arranged door type support frame is equipped on the fastener outer side, the door type support frame is arranged in parallel with cable guide pipe, and the support rib plate is fixedly connected with the bottom of door type support frame;Sliding plate is movably equipped in the door type support frame;Symmetrically equipped with top rod on the sliding plate, the top rod bottom end is arranged on the sliding plate, and the top rod top end is clamped in waterproof cover lower edge;Hoisting equipment is arranged at the top of door type support frame, and the hoisting equipment drives sliding plate to make ascending motion in door type support frame, drives top rod synchronous motion, so that top rod pushes waterproof cover and outer sleeve tube upwards.

2. The sleeve jacking device for construction and inspection of steel strand cable according to claim 1, characterized in that: The top rod top end is respectively provided with U-shaped clamping groove, and the clamping groove is clamped with the lower edge of waterproof cover.

3. The sleeve jacking device for construction and inspection of steel strand cable according to claim 1, characterized in that: The door type support frame includes two symmetrically arranged upright columns, sliding grooves are respectively arranged on the inner side of the upright column, and the two sliding grooves are oppositely arranged;Horizontal bar is arranged between the top of the two upright columns, and the first lifting lug is arranged at the bottom of the horizontal bar.

4. The sleeve jacking device for construction and inspection of steel strand cable according to claim 3, characterized in that: Second lifting lug is arranged at the center of the sliding plate, and positioning plate is symmetrically arranged on the two sides of the second lifting lug, and the bottom end of the top rod is sleeved on the positioning plate.

5. The sleeve jacking device for construction and inspection of steel strand cable according to claim 4, characterized in that: The hoisting equipment is a hoisting bucket, the hoisting bucket is hung on the first lifting lug, and the hoisting hook of the hoisting bucket is hooked on the second lifting lug.

6. The sleeve jacking device for construction and inspection of steel strand cable according to claim 1, characterized in that: The fastener is a two-piece type hoop, and rubber pad is arranged on the inner surface of the hoop.

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