An epoxy steel strand installation anti-flip device and anti-flip method

Abstract

The present invention relates to an epoxy steel strand installation anti-flipping device, which is suspended on the installed steel strand and connected to a traction device, and includes an annular connection part, a suspension component, a steel strand fixing part, a traction fixing part, a cap, and a wing plate; the annular connection part is detachably sleeved on the installed steel strand, the cap is connected to the annular connection part through the suspension component, the steel strand fixing part is installed on the cap, the steel strand fixing part is detachably connected to the steel strand to be installed, the traction fixing part is fixedly connected to the cap, and the traction fixing part is detachably connected to the traction device; the wing plate is located on the left and right sides of the cap and extends upward, and when the cap swings to the extreme position relative to the suspension component, the upper edge of the wing plate presses on the annular connection part or the suspension component. The present invention also relates to an epoxy steel strand installation anti-flipping method. The present invention can effectively avoid the problem of steel strands being twisted during installation, and belongs to bridge construction technology.

Description

Technical Field

[0001] The invention relates to a bridge construction technology, in particular to an epoxy steel strand installation anti-turnover device, and also to an epoxy steel strand installation anti-turnover method. Background Art

[0002] Entering the 21st century, China's bridge engineering has entered a period of rapid development. The span of the bridge is getting larger and larger, the structural requirements are getting higher and higher, and the appearance is getting more and more exquisite. More and more bridge projects choose to use cable-stayed design. Quality is the life of the project. As part of the load-bearing structure of the cable-stayed bridge, the importance of the cable is beyond doubt.

[0003] The existing installation method of steel strands is to pull the steel strands in the sleeve through a traction device. During the pulling process, the steel strands are prone to twisting. During the installation stage, the twisting of the steel strands in the sleeve (commonly known as twisting) will directly affect the qualified rate of the cable tensioning force in the later stage. If the traditional installation method is used, twisting is likely to occur, and the collision between the steel strands and the inner wall of the sleeve is the main factor affecting this problem. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide an epoxy steel strand installation anti-flipping device and an anti-flipping method for preventing the steel strand from twisting during installation.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] An epoxy steel strand installation anti-flip device is suspended on the installed steel strand and connected to a traction device, comprising an annular connection part, a suspension component, a steel strand fixing part, a traction fixing part, a cap, and a wing plate; the annular connection part is detachably sleeved on the installed steel strand, the cap is connected to the annular connection part through the suspension component, the steel strand fixing part is installed on the cap, the steel strand fixing part is detachably connected to the steel strand to be installed, the traction fixing part is fixedly connected to the cap, and the traction fixing part is detachably connected to the traction device; the wing plate is located on the left and right sides of the cap and extends upward, and when the cap swings to the extreme position relative to the suspension component, the upper edge of the wing plate presses on the annular connection part or the suspension component. With this structure, disassembly and assembly are convenient, and twisting of the steel strand during installation is avoided.

[0007] As a preferred embodiment, the wing plate is a steel plate bent into an arc shape; the support platform is fixed at the left and right center of the inner side of the wing plate, the upper end of the support platform is a plane, and the lower end is an arc surface corresponding to the shape of the inner side of the wing plate. After adopting this structure, the width of the support platform is increased, and it cooperates with the suspension component to jointly limit the rotation of the support platform.

[0008] As a preferred embodiment, a longitudinal dividing strip is provided at the middle of the upper end of the support platform, and a fixing piece is provided on the longitudinal dividing strip extending in the front-rear direction, and the fixing piece is connected to the hanging component. After adopting this structure, it is convenient to connect the hanging component to the support platform.

[0009] As a preferred embodiment, the number of the suspension components is at least two, which are arranged along the front-rear direction, and the suspension components and the annular connecting parts are arranged one by one. After adopting this structure, the stability of the anti-turnover device during the working process is improved.

[0010] As a preferred embodiment, the suspension member is a carbon steel chain or a steel wire rope. After adopting this structure, it is convenient for the anti-turnover device to be suspended on the steel strand and slide.

[0011] As a preferred embodiment, the annular connecting part includes a connecting buckle, a baffle, and a rolling pulley; the connecting buckle is provided with an opening, the baffle is located at the opening, the connecting buckle and the baffle form a rectangle, the baffle is rotatably connected to the connecting buckle; a rolling pulley is provided on the inner side of the straight edge at the upper end of the connecting buckle. With this structure, it is convenient to disassemble and assemble the anti-turnover device on the steel strand, and to hang the anti-turnover device on the steel strand and slide.

[0012] As a preferred embodiment, the steel strand fixing part includes a connector and a connector buckle; the upper end plane of the support platform is provided with a fixing part, and the fixing part, the connector, the connector buckle, and the steel strand to be installed are connected in sequence. After adopting this structure, it is convenient to disassemble and install the steel strand to be installed in the anti-turnover device.

[0013] As a preferred embodiment, the connecting buckle includes a ring and two clamps; the heads of the two clamps are hinged, so that the two clamps are opened or buckled; after the two clamps are buckled, from the head to the tail, they are the hinge part, the first limiting section, the first conical section, the first cylindrical section, the transition section, the second cylindrical section, and the second limiting section; the size of the head of the first conical section is smaller than the tail; the outer diameter of the first cylindrical section is equal to the outer diameter of the tail of the first conical section, and is smaller than the inner diameter of the ring; the outer diameter of the second cylindrical section is larger than the outer diameter of the first cylindrical section, and corresponds to the inner diameter of the ring; when the ring slides to the second cylindrical section, the two clamps are buckled and locked, and when the ring slides to the first conical section, the two clamps are opened; semicircular grooves are provided on the inner sides of the two clamps, and the two grooves are correspondingly arranged to form the parts for clamping the steel strands to be installed. After adopting this structure, it is convenient to disassemble and assemble the steel strands to be installed in the anti-flip device.

[0014] As a preferred embodiment, the traction fixing part is a hook, and hooks are arranged on both the front and rear sides of the support platform. After adopting this structure, it is convenient to connect the anti-turning device with the traction device.

[0015] An anti-flipping method for installing epoxy steel strands, wherein an anti-flipping device is hung on one end of the installed steel strand, a traction device is connected to the front and rear sides of the anti-flipping device, the steel strand to be installed is connected to the anti-flipping device, the anti-flipping device is pulled by the traction device, and the anti-flipping device drives the steel strand to be installed to move to the other end to complete the installation; during the movement, the support platform deflects relative to the suspension component, and the annular connection part or the suspension component supports the wing plate to prevent the steel strands from being twisted. After adopting this method, the installation efficiency of the steel strand is high.

[0016] In general, the present invention has the following advantages:

[0017] 1. By adding wing plates and hanging parts, the steel strands are prevented from getting twisted during installation. By setting the steel strand fixing part, the steel strands to be installed are conveniently installed on the anti-flip device.

[0018] 2. The steel strand fixing part and the annular connection part are both detachable, which provides convenience for repeated installation of the steel strand and repeated use of the anti-flip device, and also improves the efficiency of installing the steel strand.

[0019] 3. The provision of the wing plate increases the width of the platform, and cooperates with the suspension component and the annular connection part to jointly limit the flipping of the platform during the working process.

[0020] 4. The suspension parts are carbon steel chains or steel wire ropes, which facilitate the flexible movement of the pedestal when it collides with the sleeve, and also prevent the pedestal from getting stuck and unable to slide when the steel strands are densely packed.

[0021] 5. Multiple steel strand fixing parts can be set on the base at the same time, and multiple steel strands can be installed at the same time, which improves work efficiency.

[0022] 6. A rolling pulley is arranged on the inner side of the straight edge at the upper end of the annular connection part, so that the annular connection part can drive the anti-flip device as a whole to slide on the installed steel strand.

[0023] 7. The anti-rollover devices are all composed of some simple structures, which are easy to process and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of the anti-rollover device installed for the epoxy steel strand when in use.

[0025] Figure 2 It is a three-dimensional diagram of the annular connecting portion.

[0026] Figure 3 A three-dimensional diagram of the connecting buckle.

[0027] Figure 4 Schematic diagram of installing an anti-rollover device for epoxy steel strands so that they swing to the extreme position during use.

[0028] Figure 5 A three-dimensional diagram of a longitudinal dividing strip.

[0029] Among them, 1 is a sleeve, 2 is an annular connecting part, 3 is a wing plate, 4 is a hanging component, 5 is an installed steel strand, 6 is a sleeve ring, 7 is a steel strand to be installed, 8 is a traction fixing part, 9 is a base, 10 is a connecting piece, 11 is a connecting buckle, 12 is a fixing piece, 13 is a longitudinal dividing strip, 2-1 is a connecting buckle, 2-2 is a baffle, 2-3 is a rolling pulley, 11-1 is a first limiting section, 11-2 is a circular ring, 11-3 is a first conical section, 11-4 is a first cylindrical section, 11-5 is a transition section, 11-6 is a second cylindrical section, 11-7 is a second limiting section, 11-8 is a groove, and 11-9 is a hinged part. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with specific implementation methods.

[0031] An epoxy steel strand installation anti-flip device is suspended on the installed steel strand and connected to a traction device, comprising an annular connection part, a suspension component, a steel strand fixing part, a traction fixing part, a cap, and a wing plate; the annular connection part is detachably sleeved on the installed steel strand, the cap is connected to the annular connection part through the suspension component, the steel strand fixing part is installed on the cap, the steel strand fixing part is detachably connected to the steel strand to be installed, the traction fixing part is fixedly connected to the cap, and the traction fixing part is detachably connected to the traction device; the wing plate is located on the left and right sides of the cap and extends upward, and when the cap swings to the extreme position relative to the suspension component, the upper edge of the wing plate presses on the annular connection part or the suspension component. The traction fixing part is a hook, and hooks are provided on both the front and rear sides of the cap.

[0032] The wing plate is a steel plate bent into an arc shape; the pedestal is fixed at the left and right center of the inner side of the wing plate, the upper end of the pedestal is a plane, and the lower end is an arc surface corresponding to the shape of the inner side of the wing plate. A longitudinal dividing strip is provided in the middle of the upper end of the pedestal, and a fixing is provided on the longitudinal dividing strip extending in the front-to-back direction, and the fixing is connected to the suspension component. The number of the suspension components is at least two, arranged in the front-to-back direction, and the suspension components and the annular connecting parts are arranged one by one. The suspension component is a flexible component, such as a carbon steel chain or a steel wire rope.

[0033] The annular connection part includes a connecting buckle, a baffle, and a rolling pulley; the connecting buckle is provided with an opening, the baffle is located at the opening, the connecting buckle and the baffle form a rectangle, and the baffle is rotatably connected to the connecting buckle; a rolling pulley is provided on the inner side of the straight edge of the upper end of the connecting buckle. When the annular connection part is connected to the installed steel strand, the inner rolling pulley facilitates the rolling and sliding of the annular connection part on the installed steel strand, thereby reducing the wear of the installed steel strand. When the baffle is disassembled and installed on the installed steel strand by the anti-turnover device, the baffle is rotated to the outside of the connecting buckle, and the baffle is buckled with the connecting buckle after the anti-turnover device is hung or disassembled.

[0034] The steel strand fixing part includes a connector and a connecting buckle; the upper end plane of the pedestal is provided with a fixing part, and the fixing part, the connector, the connecting buckle, and the steel strand to be installed are connected in sequence. The connector is a circular ring structure at both the head and tail, and a connecting rod structure in the middle; the fixing part is an arc rod, the two ends of the arc rod are fixedly connected to the pedestal, and the circular ring of the connecting part is connected to the arc rod.

[0035] The connecting buckle includes a circular ring and two clamps; the heads of the two clamps are hinged, so that the two clamps are opened or buckled; after the two clamps are buckled, from the head to the tail are the hinge part, the first limiting section, the first conical section, the first cylindrical section, the transition section, the second cylindrical section, and the second limiting section; the size of the head of the first conical section is smaller than the tail; the outer diameter of the first cylindrical section is equal to the outer diameter of the tail of the first conical section, and is smaller than the inner diameter of the circular ring; the outer diameter of the second cylindrical section is larger than the outer diameter of the first cylindrical section, and corresponds to the inner diameter of the circular ring; when the circular ring slides to the second cylindrical section, the two clamps are buckled and locked, and when the circular ring slides to the first conical section, the two clamps are opened; semicircular grooves are provided on the inner sides of the two clamps, and the two grooves are correspondingly arranged to form a part for clamping the steel strand to be installed. The groove is an arc-shaped groove, and the radius of the arc corresponds to the radius of the steel strand. The groove extends from the second limit section to the tapered section. The groove is provided with a limit groove extending to the inside of the clamp or the left and right sides at the end of the tapered section. A limit block is vertically provided at the end of the steel strand. The limit block cooperates with the limit groove. When the two clamps are buckled and locked, the limit block restricts the steel strand from falling off from the connecting buckle. A through hole is provided at the head of the clamp, and the through hole is used to connect with the circular ring of the connector.

[0036] Anti-flipping method for installing epoxy steel strands: Before installing the steel strands, install the sleeve first, and set traction devices at both ends of the sleeve. The traction device is a winch. The winch at the installation position is connected to a pulley block; the pull rope of the winch cooperates with the pulley block and then passes through the sleeve. The installation is completed by manually pushing two steel strands to the installation position at one time. Hang the anti-flipping device on the installed steel strands, install the two steel strands to be installed on the connecting buckle, and provide a ring at the end of the cable, which is put on the hook. The winch pulls the anti-flipping device from the sleeve to the installation position, removes the steel strand to be installed from the anti-flipping device, and the winch at the other end pulls the anti-flipping device back to the original position and repeats the previous steps until the steel strands are installed.

[0037] During the installation of the steel strands, the anti-rollover device slides in the sleeve under the action of the winch. During the sliding process, since the cable of the anti-rollover device is a flexible part, when the cable is not in a taut state, the anti-rollover device is easy to collide and flip in the sleeve. At this time, since the wing plate increases the width of the base, when the anti-rollover device flips, the wing plate collides with the inside of the sleeve, and the anti-rollover device will be bumped back to hang under the installed steel strands. If a force is added inside the collision sleeve, causing the anti-rollover device to flip to the extreme position, the suspension component or the annular connection part will support the upper end of the wing plate, and the anti-rollover device can only swing within a certain range and will not completely flip. Therefore, the steel strands will not be entangled together, solving the problem of twisting of the steel strands in the prior art.

[0038] In addition to the methods mentioned in this embodiment, the wing plate can be other shapes extending upward from the left and right sides of the pedestal, such as two limit plates welded on the left and right sides of the pedestal, as long as the pedestal swings relative to the suspension component, the upper edge of the wing plate can be against the annular connecting part or the suspension component. The number of steel strand fixing parts can be other, such as three, four, etc., corresponding to fixing three or four steel strands to be installed. These changes are all within the scope of protection of the present invention.

[0039] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An epoxy steel strand installation anti-flip device, suspended on the installed steel strand and connected to a traction device, characterized in that: It includes an annular connecting part, a hanging component, a steel strand fixing part, a traction fixing part, a cap and a wing plate; the annular connecting part is detachably sleeved on the installed steel strand, the cap is connected to the annular connecting part through the hanging component, the steel strand fixing part is installed on the cap, the steel strand fixing part is detachably connected to the steel strand to be installed, the traction fixing part is fixedly connected to the cap, and the traction fixing part is detachably connected to the traction device; the wing plate is located on the left and right sides of the cap and extends upward, and when the cap swings to the extreme position relative to the hanging component, the upper edge of the wing plate presses on the annular connecting part or the hanging component.

2. The epoxy steel strand installation anti-flipping device according to claim 1, characterized in that: The wing plate is a steel plate bent into an arc shape; the cap is fixed at the left and right center position of the inner side of the wing plate, the upper end of the cap is a plane, and the lower end is an arc surface corresponding to the shape of the inner side of the wing plate.

3. The epoxy steel strand installation anti-overturning device according to claim 2, characterized in that: A longitudinal dividing strip is arranged at the middle part of the upper end of the supporting platform, and a fixing piece is arranged on the longitudinal dividing strip extending along the front-back direction, and the fixing piece is connected with the hanging component.

4. The epoxy steel strand installation anti-overturning device according to claim 2, characterized in that: The number of the suspension components is at least two, which are arranged along the front-to-back direction, and the suspension components and the annular connecting parts are arranged in a one-to-one correspondence.

5. The epoxy steel strand installation anti-overturning device according to claim 4, characterized in that: The suspension components are carbon steel chains or steel ropes.

6. The epoxy steel strand installation anti-overturning device according to claim 2, characterized in that: The annular connecting part includes a connecting buckle, a baffle, and a rolling pulley; an opening is provided on the connecting buckle, the baffle is located at the opening, the connecting buckle and the baffle form a rectangle, and the baffle is rotatably connected to the connecting buckle; a rolling pulley is provided on the inner side of the straight edge at the upper end of the connecting buckle.

7. The epoxy steel strand installation anti-overturning device according to claim 2, characterized in that: The steel strand fixing part includes a connecting piece and a connecting buckle; the upper end plane of the pedestal is provided with a fixing piece, and the fixing piece, the connecting piece, the connecting buckle and the steel strand to be installed are connected in sequence.

8. The epoxy steel strand installation anti-overturning device according to claim 7, characterized in that: The connecting buckle includes a circular ring and two clamps; the heads of the two clamps are hinged, so that the two clamps are opened or buckled; after the two clamps are buckled, from the head to the tail are the hinge part, the first limiting section, the first conical section, the first cylindrical section, the transition section, the second cylindrical section, and the second limiting section; the size of the head of the first conical section is smaller than the tail; the outer diameter of the first cylindrical section is equal to the outer diameter of the tail of the first conical section, and is smaller than the inner diameter of the circular ring; the outer diameter of the second cylindrical section is larger than the outer diameter of the first cylindrical section, and corresponds to the inner diameter of the circular ring; when the circular ring slides to the second cylindrical section, the two clamps are buckled and locked, and when the circular ring slides to the first conical section, the two clamps are opened; semicircular grooves are provided on the inner sides of the two clamps, and the two grooves are correspondingly arranged to form a part for clamping the steel strand to be installed.

9. The epoxy steel strand installation anti-overturning device according to claim 2, characterized in that: The traction fixing part is a hook, and hooks are arranged on both the front and rear sides of the platform.

10. A method for preventing the installation of epoxy steel strands from turning over, using an epoxy steel strand installation anti-turning device according to any one of claims 1 to 9, characterized in that: An anti-rollover device is hung at one end of the installed steel strand, and a traction device is connected to the front and rear sides of the anti-rollover device. The steel strand to be installed is connected to the anti-rollover device, and the anti-rollover device is pulled by the traction device. The anti-rollover device drives the steel strand to be installed to move to the other end to complete the installation. During the movement, the base is deflected relative to the suspension component, and the annular connection part or the suspension component supports the wing plate to prevent the steel strands from being entangled.

Images