Steel wire suspender tensioning device for bridge

Abstract

The utility model provides a steel wire suspender tensioning device for a bridge, which comprises a lifting seat, a fork ear anchor head, an adjusting rod, a suspender anchor head, a limit table I, a suspender cable body, a lower reaction frame, a finish rolling twisted steel bar, an upper reaction frame, a center hole jack and a limit table II, the lower counter-force frame is connected with the fork ear anchor head, the hanging brackets are symmetrically arranged at the bottom of the lower counter-force frame, the two ends of the suspender anchor head are connected with the suspender cable body and the first limiting table respectively, the first limiting table is further connected with the adjusting rod, the bottom end of the adjusting rod is connected with the second limiting table, the second limiting table is connected with the fork ear anchor head, and the hanging seat is installed at the bottom end of the fork ear anchor head. Finish-rolled twisted steel is sequentially connected with the hanging bracket, the center hole jack, the lower counter-force frame and the upper counter-force frame in a penetrating mode, locked and fixed through the nut and the cushion block and installed at the bottom of the lower counter-force frame through the center hole jack, the height of the whole tensioning device is shortened, and a load-bearing stress structure is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a steel wire hanger tensioning device for bridges. Background Technique

[0002] When a suspension bridge and an arch bridge are under construction or when replacing steel wire hangers, the hangers need to be tensioned. The former is to adjust the length of the hanger to lift the bridge deck to a specific height, and the latter is to let the hanger exit the stressed state for replacement. The hydraulic jacks of conventional tensioning devices are all installed on the top surface of the upper reaction frame. The jacks are relatively heavy and it is quite inconvenient to install them. After setting up an installation platform, people need to stand on it for installation. Moreover, most conventional tensioning devices use thick plate reaction frames. Such reaction frames are not only heavy and difficult to install, but also prone to deformation, and often need to be corrected, reinforced or replaced during the construction process.

[0003] The purpose of the utility model is to provide a steel wire hanger tensioning device for bridges to solve the problems mentioned in the above background technique. Content of the Utility Model

[0004] To achieve the above purpose, the utility model provides a steel wire hanger tensioning device for bridges, which includes a hanging seat, a fork ear anchor head, an adjusting rod, a hanger anchor head, a first limiting platform, a hanger cable body, a lower reaction frame, a precision rolled thread steel bar, an upper reaction frame, a through-hole jack, a cushion block, a nut, and a second limiting platform. The upper reaction frame is connected to the hanger anchor head and fixed by fixing bolts. The lower reaction frame is connected to the fork ear anchor head and fixedly connected by fixing bolts. Hangers are symmetrically arranged at the bottom of the lower reaction frame, and the hangers are used to install the through-hole jack. One end of the hanger anchor head is connected to the hanger cable body, and the other end is movably connected to the first limiting platform by threads. One end of the first limiting platform away from the hanger anchor head is movably connected to the adjusting rod. The bottom end of the adjusting rod is movably connected to the second limiting platform by threads. The bottom of the second limiting platform is connected to the top of the fork ear anchor head. The hanging seat is installed at the bottom end of the fork ear anchor head. The precision rolled thread steel bar sequentially passes through the hangers, the through-hole jack, the lower reaction frame, and the upper reaction frame, and both ends of the precision rolled thread steel bar are locked and fixed by the nuts and the cushion blocks.

[0005] As a further improvement of the present utility model, the upper reaction frame and the lower reaction frame are arranged in opposite directions. Both the upper reaction frame and the lower reaction frame are composed of symmetrically arranged frames. The two frames are connected and fixed by fixing bolts. The frame includes a panel, a bottom plate, a load-bearing plate, and a stiffening plate. The bottom of the panel is fixedly connected to the top of the bottom plate. The load-bearing plate is fixedly installed on the outer sides of the panel and the bottom plate. The load-bearing plate is arranged between the panel and the bottom plate. The stiffening plate is arranged on both sides of the panel and is located at the angle between the panel and the bottom plate. The centers of the panel and the bottom plate are buckled on the outer wall of the suspension cable or the second limiting platform.

[0006] As a further improvement of the present utility model, semi-circular holes I for clamping the suspension cable are provided at the centers of the inner sides of the panel and the bottom plate on the upper reaction frame. After the two semi-circular holes I are buckled, the suspension cable is clamped and fixed. Semi-circular holes II for clamping the second limiting platform are provided at the centers of the inner sides of the panel and the bottom plate on the lower reaction frame. The symmetrically arranged semi-circular holes II are buckled to clamp and fix the second limiting platform.

[0007] As a further improvement of the present utility model, a plurality of bolt holes are provided on the load-bearing plate and the stiffening plate of each frame. The fixing bolt sequentially passes through the load-bearing plate and the stiffening plate on one side of the frame and extends out of the stiffening plate on the other side of the frame to the outer wall of the load-bearing plate and is locked and fixed by a nut.

[0008] As a further improvement of the present utility model, semi-circular holes III for the fine-threaded deformed bar to pass through are symmetrically provided on the bottom plate. The semi-circular holes III are arranged on the opposite sides of the symmetric bottom plates. The semi-circular holes III on the symmetric bottom plates are buckled to form a mounting hole I with the same diameter as the fine-threaded deformed bar.

[0009] As a further improvement of the present utility model, the hanging bracket includes a hanging buckle, a hanging rod, and a supporting plate. The hanging buckle is fixed to the bottom of the bottom plate on the lower reaction frame. The supporting plates are symmetrically arranged below the bottom plate. The hanging rods are symmetrically arranged on both sides of the supporting plate. An arc-shaped notch is formed at the upper end of the hanging rod. The hanging rod is connected to the hanging buckle through the arc-shaped notch. The supporting plate is located at the bottom end of the hanging rod.

[0010] As a further improvement of the present utility model, mounting holes II are provided on both sides of the supporting plate. The bottom end of the hanging rod is connected to the mounting holes II through a suspension bolt. The hanging rod is rotatably connected to the suspension bolt. A through hole for the fine-threaded deformed bar to pass through is provided at the center of the supporting plate. The nut and the cushion block at the bottom of the fine-threaded deformed bar are attached to the bottom of the supporting plate.

[0011] As a further improvement of the present utility model, a limit ring is further provided on the top surface of the support plate, and the limit ring is used for installing the through-hole jack, and the end of the reaction cylinder of the through-hole jack is fitted inside the limit ring.

[0012] As a further improvement of the present utility model, an opening is provided at the bottom end of the fork ear anchor head, and the top of the hanging seat extends into the opening and is fixedly connected by a pin bolt.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, through the hanging bracket installed at the bottom of the lower reaction frame, the through-hole jack can be installed on the hanging bracket, which not only shortens the installation height of the entire tensioning device, effectively reduces the installation difficulty of the tensioning device, but also makes the load-bearing structure more stable, providing a solid foundation for the tensioning operation.

[0015] 2. In the present utility model, through the limit ring on the hanging bracket, the jack can be quickly and accurately positioned, without the need for adjustment during the installation of the precision rolled threaded steel bars, effectively improving the installation efficiency.

[0016] 3. In the present utility model, both the upper reaction frame and the lower reaction frame adopt a snap-fitting installation method, with reasonable structural stress, not easily deformed and reduced self-weight, and the snap-fitting design makes the installation and disassembly of the upper and lower reaction frames simple and fast, improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model without the upper reaction frame and the lower reaction frame;

[0018] Figure 2 is a schematic structural diagram of the initial state of the hanger tensioning device of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the completed tensioning state of the hanger tensioning device of the present utility model;

[0020] Figure 4 is the present utility model Figure 3 of the three-dimensional structural diagram;

[0021] Figure 5 is the separation diagram of the frame body of the lower reaction frame of the present utility model.

[0022] In the figure: 101, the hoisting rod cable body; 102, the hoisting rod anchor head; 103, the first limiting platform; 104, the adjusting rod; 105, the second limiting platform; 106, the fork ear anchor head; 107, the pin bolt; 108, the hanging seat; 201, the hole-piercing jack; 202, the high-strength precision rolled thread steel bar; 203, the cushion block; 204, the nut; 3, the upper reaction frame; 4, the lower reaction frame; 401, the fixing bolt; 402, the panel; 403, the bottom plate; 404, the bearing plate; 405, the stiffening plate; 5, the hanging bracket; 501, the hanging buckle; 502, the hanging rod; 503, the limiting ring; 504, the suspension bolt; 505, the supporting plate. Detailed implementation mode

[0023] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] The present invention will be further described in detail below with reference to the drawings.

[0026] Embodiment 1:

[0027] Please refer to Figures 1-5The utility model provides a wire hanger tensioning device for a bridge, comprising a hanger seat, a fork ear anchor head, an adjusting rod, a hanger anchor head, a limiting platform, a hanger cable body, a lower reaction frame, a precision-rolled threaded steel bar, an upper reaction frame, a through-hole jack, a cushion block, a nut, and a limiting platform. The upper reaction frame is connected to the hanger anchor head and fixed by a fixing bolt, the lower reaction frame is connected to the fork ear anchor head and fixed by a fixing bolt, a hanger is symmetrically arranged at the bottom of the lower reaction frame, the hanger is used to install the through-hole jack, and one end of the hanger anchor head is connected to the through-hole jack. It is connected to the hanger cable body, and the other end is movably connected to the limit platform 1 through a thread. The end of the limit platform 1 away from the hanger anchor head is movably connected to the adjusting rod. The bottom end of the adjusting rod is movably connected to the limit platform 2 through a thread. The bottom of the limit platform 2 is connected to the top of the fork ear anchor head. The hanger is installed at the bottom end of the fork ear anchor head. The fine-rolled threaded steel bar is sequentially connected to the hanger, the through-hole jack, the lower reaction frame, and the upper reaction frame. Both ends of the fine-rolled threaded steel bar are locked and fixed by the nuts and the pads.

[0028] The bottom end of the fork ear anchor head is provided with an opening, and the top of the hanger extends into the opening and is fixed by a pin connection.

[0029] When the boom tensioning device starts to work, the through-hole jack lifts the lower reaction frame upward. Due to the limitation of the fork ear anchor head limit platform, the lower reaction frame drives the fork ear anchor head and the hanger seat to rise accordingly. When it reaches the target height, the adjusting rod between the boom anchor head and the fork ear anchor head is tightened to complete the tensioning of the boom. The working principle of the boom tensioning is the existing technology and will not be elaborated here. In order to reduce the installation difficulty of the boom tensioning device, the through-hole jack is arranged below the lower reaction frame, thereby shortening the installation height of the entire tensioning device and reducing the installation difficulty. Moreover, this arrangement makes the load-bearing structure more stable, providing a solid foundation for the tensioning operation.

[0030] Embodiment 2:

[0031] On the basis of the first embodiment, in this embodiment, Figures 4-5As shown, the upper reaction frame and the lower reaction frame are arranged in opposite directions. Both the upper reaction frame and the lower reaction frame are composed of symmetrically arranged frames. The two frames are connected and fixed by fixing bolts. The frame includes a panel, a bottom plate, a load-bearing plate, and a stiffening plate. The bottom of the panel is fixedly connected to the top of the bottom plate. The load-bearing plate is fixedly installed on the outer sides of the panel and the bottom plate. The load-bearing plate is arranged between the panel and the bottom plate. The stiffening plate is arranged on both sides of the panel and is located at the angle between the panel and the bottom plate. The centers of the panel and the bottom plate are buckled on the outer wall of the suspender cable or the second limiting platform. The symmetrically arranged frames are buckled on the outer wall of the suspender cable or the second limiting platform, and then the fixing bolts are passed through the two frames and locked and fixed by nuts to complete the installation of the upper reaction frame and the lower reaction frame with the suspender cable and the second limiting platform. The buckle-type installation can realize the rapid installation and disassembly of the upper reaction frame and the lower reaction frame. Further, in order to facilitate the installation of the fixing bolts, load-bearing plates are fixedly installed on the outer sides of the panel and the bottom plate, and stiffening plates are fixedly installed at the angles on both sides of the panel and the bottom plate to provide an installation position for the fixing bolts and also increase the stability of the upper reaction frame and the lower reaction frame.

[0032] Semicircular holes 1 for clamping the suspender cable are provided at the inner centers of the panel and the bottom plate on the upper reaction frame. After the two semicircular holes 1 are buckled, the suspender cable is clamped and fixed. Semicircular holes 2 for clamping the second limiting platform are provided at the inner centers of the panel and the bottom plate on the lower reaction frame. After the symmetrically arranged semicircular holes 2 are buckled, the second limiting platform is clamped and fixed. By providing the semicircular holes 1 and the semicircular holes 2, when the two semicircular holes 1 or the two semicircular holes 2 are buckled, it is convenient for the upper reaction frame and the lower reaction frame to fit and clamp the suspender cable or the second limiting platform.

[0033] A plurality of bolt holes are provided on the load-bearing plates and the stiffening plates of each frame. The fixing bolts sequentially pass through the load-bearing plate and the stiffening plate on one side of the frame and extend out of the stiffening plate on the other side of the frame to the outer wall of the load-bearing plate and are locked and fixed by nuts.

[0034] Semicircular holes 3 for passing the high-strength rolled ribbed steel bars are symmetrically provided on the bottom plate. The semicircular holes 3 are arranged on the opposite sides of the symmetric bottom plates. The semicircular holes 3 on the symmetric bottom plates are buckled into an installation hole 1 with the same diameter as the high-strength rolled ribbed steel bar, which is convenient for buckling the upper reaction frame and the lower reaction frame outside the high-strength rolled ribbed steel bar and moving along the high-strength rolled ribbed steel bar during adjustment.

[0035] In this embodiment, both the upper reaction frame and the lower reaction frame adopt a snap-fit installation method, with reasonable structural stress, not easily deformed, reduced self-weight, and the snap-fit design makes the installation and disassembly of the upper and lower reaction frames simple and fast, improving the construction efficiency.

[0036] Embodiment Three:

[0037] Based on Embodiment One, in this embodiment, as Figures 3-5 shown, the hanging frame includes a hanging buckle, a hanging rod, and a support plate. The hanging buckle is fixed to the bottom of the bottom plate on the lower reaction frame. The support plates are symmetrically arranged below the bottom plate. The hanging rods are symmetrically arranged on both sides of the support plate. An arc-shaped notch is formed at the upper end of the hanging rod, and the hanging rod is connected to the hanging buckle through the arc-shaped notch. The support plate is located at the bottom end of the hanging rod.

[0038] Installation holes II are formed on both sides of the support plate. The bottom end of the hanging rod is connected to the installation holes II through suspension bolts. The hanging rod is rotatably connected to the suspension bolts. A through hole for the precision rolled threaded steel bar to pass through is provided at the center of the support plate. The nuts and the cushion blocks at the bottom of the precision rolled threaded steel bar are attached to the bottom of the support plate.

[0039] During use, the support plate is provided to facilitate the placement of the through-hole jack. Hanging rods are arranged on both sides of the support plate. An arc-shaped notch for cooperating with the hanging buckle at the bottom of the lower reaction frame is provided at the top of the hanging rod, facilitating the quick connection and disassembly between the hanging rod and the hanging buckle. Before placing the through-hole jack, the hanging rod is hooked to the hanging buckle. After the through-hole jack is placed on the support plate, the support plate is lifted along the precision rolled threaded steel bar by rotating the nut at the bottom of the support plate until the top surface of the through-hole jack fits against the bottom of the lower reaction frame, facilitating the stable installation of the through-hole jack between the lower reaction frame and the support plate. In this embodiment, when the nut rotates and the support plate moves upward, the hanging rod slowly disengages from the hanging buckle until the through-hole jack fits against the bottom of the lower reaction frame.

[0040] Embodiment Four:

[0041] Based on Embodiment One, in this embodiment, as Figure 5 shown, a limit ring is further provided on the top surface of the support plate. The limit ring is used for installing the through-hole jack, and the end of the reaction cylinder of the through-hole jack is fitted inside the limit ring.

[0042] In this embodiment, by providing a limit ring on the support plate, the through-hole jack can be quickly and accurately positioned, without the need for adjustment when installing the precision rolled threaded steel bars, effectively improving the installation efficiency. At the same time, the setting of the limit ring can prevent the through-hole jack from generating displacement during operation, restricting the position of the through-hole jack, thereby ensuring the safety of construction.

[0043] The above exemplary description of the present utility model is made in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A wire hanger tensioning device for bridges, characterized in that: It includes a hanger seat, a fork ear anchor head, an adjusting rod, a hanger anchor head, a limit platform 1, a hanger cable body, a lower reaction frame, a precision-rolled threaded steel bar, an upper reaction frame, a through-hole jack, a cushion block, a nut, and a limit platform 2. The upper reaction frame is connected to the hanger anchor head and fixed by a fixing bolt. The lower reaction frame is connected to the fork ear anchor head and fixed by a fixing bolt. A hanger is symmetrically arranged at the bottom of the lower reaction frame. The hanger is used to install the through-hole jack. One end of the hanger anchor head is connected to the hanger cable body, and the other end is connected to the The end is movably connected to the limit platform 1 by a thread, the end of the limit platform 1 away from the hanger anchor head is movably connected to the adjusting rod, the bottom end of the adjusting rod is movably connected to the limit platform 2 by a thread, the bottom of the limit platform 2 is connected to the top of the fork ear anchor head, the hanger is installed at the bottom end of the fork ear anchor head, the fine-rolled threaded steel bar is sequentially connected to the hanger, the through-hole jack, the lower reaction frame, and the upper reaction frame, and both ends of the fine-rolled threaded steel bar are locked and fixed by the nuts and the pads.

2. The wire hanger tensioning device for a bridge according to claim 1, characterized in that: The upper reaction frame and the lower reaction frame are arranged in opposite directions, and the upper reaction frame and the lower reaction frame are both composed of symmetrically arranged frames, and the two frames are connected and fixed by fixing bolts. The frame includes a panel, a base plate, a load-bearing plate, and a stiffening plate. The bottom of the panel is fixedly connected to the top of the base plate, and the load-bearing plate is fixedly installed on the outer sides of the panel and the base plate. The load-bearing plate is arranged between the panel and the base plate, and the stiffening plate is arranged on both sides of the panel and located at the angle between the panel and the base plate. The center of the panel and the base plate is buckled on the outer wall of the hanger cable body or the limit platform 2.

3. The wire hanger tensioning device for a bridge according to claim 2, characterized in that: The panel on the upper reaction frame and the center of the inner side of the bottom plate are provided with a semicircular hole one for embracing the suspension rod cable body, and the suspension rod cable body is clamped and fixed after the two semicircular holes are buckled together. The panel on the lower reaction frame and the center of the inner side of the bottom plate are provided with a semicircular hole two for embracing the limit platform two, and the symmetrically arranged semicircular holes two are buckled together to clamp and fix the limit platform two.

4. The wire hanger tensioning device for a bridge according to claim 2, characterized in that: The load-bearing plate and the stiffening plate on each of the frames are provided with a plurality of bolt holes, and the fixing bolts extend from the frame on one side through the load-bearing plate and the stiffening plate in sequence, out of the stiffening plate on the frame on the other side to the outer wall of the load-bearing plate and are locked and fixed by nuts.

5. The wire hanger tensioning device for a bridge according to claim 2, characterized in that: The bottom plate is symmetrically provided with three semicircular holes for the fine-rolled threaded steel bars to pass through, and the three semicircular holes are arranged on the opposite side of the symmetrical bottom plate. The three semicircular holes on the symmetrical bottom plate are buckled to form a mounting hole one with the same diameter as the fine-rolled threaded steel bars.

6. The wire hanger tensioning device for a bridge according to claim 2, characterized in that: The hanger includes a hanging buckle, a hanging rod, and a supporting plate. The hanging buckle is fixed to the bottom of the bottom plate on the lower reaction frame. The supporting plates are symmetrically arranged below the bottom plate. The hanging rods are symmetrically arranged on both sides of the supporting plate. An arc-shaped notch is formed at the upper end of the hanging rod, and the hanging rod is connected to the hanging buckle through the arc-shaped notch. The supporting plate is located at the bottom end of the hanging rod.

7. A wire hanger tensioning device for a bridge according to claim 6, characterized in that: Installation holes II are formed on both sides of the supporting plate. The bottom end of the hanging rod is connected to the installation holes II through suspension bolts. The hanging rod is rotatably connected to the suspension bolts. A through hole for the fine-threaded steel bar to pass through is provided at the center of the supporting plate. The nut and the cushion block at the bottom of the fine-threaded steel bar are in contact with the bottom of the supporting plate.

8. A wire hanger tensioning device for a bridge according to claim 7, characterized in that: A limiting ring is further provided on the top surface of the supporting plate. The limiting ring is used for installing the hole-through jack, and the end of the reaction cylinder of the hole-through jack is fitted inside the limiting ring.

9. The wire hanger tensioning device for a bridge according to claim 1, characterized in that: An opening is formed at the bottom end of the fork ear anchor head. The top of the hanging seat extends into the opening and is fixedly connected through a pin bolt.

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