Tool for tensioning suspender

Abstract

The utility model relates to the technical field of bridge engineering construction, in particular to a tool for suspender tensioning, which comprises two bottom cross beams, four cross arms are symmetrically connected to the two bottom cross beams through pins, two bottom base plates are fixedly connected to the bottoms of the four cross arms respectively, steel strands are fixedly connected to the bottoms of the two bottom base plates respectively, and the steel strands are fixedly connected to the bottoms of the steel strands respectively. One end of the steel strand penetrates through the bottom base plate, two top cross beams are arranged above the bottom cross beam, two upper base plates are symmetrically and fixedly connected to the tops of the top cross beams, and front anchor type center hole jacks are installed at the tops of the upper base plates; the design requirement is met by adjusting the tension of the suspender adjusting sleeve and the suspender, the bearing of the beam body is transmitted to the arch end, and the mode is different from the mode that tensioning can be conducted at the top end or the bottom end of the suspender in the prior art. The front anchor type center hole jack is arranged in the middle of the suspender for tensioning, and after the tensioning force meeting the design requirement is achieved, the adjusting sleeve is tightened; and the stress of the suspender meets the design requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering construction, in particular to a tool for tensioning a suspension rod. Background Art

[0002] The main purpose of the hanger tensioning is to adjust the stress state of the bridge or other structure to ensure that it can remain stable and safe when bearing loads. By tensioning the hangers, the slack in the structure and the uneven distribution of prestress can be eliminated, and the overall stiffness and load-bearing capacity of the structure can be improved;

[0003] At present, the boom tensioning device is bulky and needs to be transferred and installed with the help of lifting equipment. The installation requires a large number of people and takes a long time, which is a serious waste of time and economy. Therefore, a tool for boom tensioning is proposed. Utility Model Content

[0004] In view of this, the utility model provides a tool for tensioning a suspension rod to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0005] The technical solution of the utility model is achieved as follows: a tool for hanger tensioning, comprising two bottom cross beams, the two bottom cross beams are symmetrically pin-connected with four cross arms, the bottoms of the four cross arms are respectively fixedly connected with two bottom pads, the bottoms of the two bottom pads are fixedly connected with steel strands, one end of the steel strand passes through the bottom pads, two top cross beams are arranged above the bottom cross beams, the tops of the top cross beams are symmetrically fixedly connected with two upper pads, the tops of the upper pads are installed with front anchor type through-hole jacks, one end of the steel strand passes through the top cross beams and the upper pads, and one end of the steel strand is fixedly connected to the front anchor type through-hole jacks.

[0006] Further preferably, a lower ear plate is provided between the two bottom cross beams, a boom rope bottom fork ear is provided on the top of the lower ear plate, a high-strength steel pin is provided on the front surface of the boom rope bottom fork ear, and one end of the high-strength steel pin passes through the bottom cross beam, the boom rope bottom fork ear and the lower ear plate.

[0007] Further preferably, a pin clamp is installed on the front surface of the fork ear of the bottom of the boom rope.

[0008] Further preferably, a lower adjusting link is fixedly connected to the top of the fork ear at the bottom of the boom rope, an adjusting sleeve is threadedly connected to the outer surface of the lower adjusting link, and an upper adjusting link is threadedly connected to the inner wall of the adjusting sleeve.

[0009] Further preferably, a cable body is fixedly connected inside the upper adjustment link, and the cable body passes through the top cross beam.

[0010] Further preferably, two first tension bolts are threadedly connected between the two bottom cross beams, and four second tension bolts are threadedly connected between the two top cross beams.

[0011] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0012] The utility model achieves the design requirement by adjusting the tension of the hanger through the adjusting sleeve of the hanger, and transfers the load of the beam body to the arch end. Different from the previous tensioning method at the top or bottom of the hanger, the utility model sets a front anchor type through-hole jack in the middle of the hanger for tensioning. After the tensioning force required by the design is achieved, the adjusting sleeve is tightened so that the force on the hanger meets the design requirement.

[0013] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a structural diagram of the utility model's suspension rod tensioning;

[0016] Figure 2 This is a structural diagram of the suspension rod structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 Another perspective structure diagram;

[0018] Figure 4 This is a structural diagram of the utility model suspension rod tensioning tool;

[0019] Figure 5 For this utility model Figure 4 Another perspective structure diagram.

[0020] Figure numerals: 1. bottom cross beam; 2. cross arm; 3. bottom pad; 4. steel strand; 5. first pair of tension bolts; 6. top cross beam; 7. second pair of tension bolts; 8. upper pad; 9. front anchor type through-hole jack; 10. high-strength steel pin; 11. pin clamp; 12. bottom fork ear of boom rope; 13. lower adjusting connecting rod; 14. adjusting sleeve; 15. upper adjusting connecting rod; 16. rope body; 17. lower ear plate. DETAILED DESCRIPTION

[0021] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0022] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-5 As shown, an embodiment of the utility model provides a tool for tensioning a hanger, comprising two bottom cross beams 1, the two bottom cross beams 1 are symmetrically pinned with four cross arms 2, the bottoms of the four cross arms 2 are respectively fixedly connected with two bottom pads 3, the bottoms of the two bottom pads 3 are fixedly connected with steel strands 4, one end of the steel strands 4 passes through the bottom pads 3, two top cross beams 6 are arranged above the bottom cross beams 1, the tops of the top cross beams 6 are symmetrically fixedly connected with two upper pads 8, a front anchor type through-hole jack 9 is installed on the top of the upper pad 8, one end of the steel strand 4 passes through the top cross beam 6 and the upper pad 8, and one end of the steel strand 4 is fixedly connected to the front anchor type through-hole jack 9.

[0024] In one embodiment, a lower ear plate 17 is provided between the two bottom cross beams 1, a boom rope bottom fork ear 12 is provided on the top of the lower ear plate 17, a high-strength steel pin shaft 10 is provided on the front surface of the boom rope bottom fork ear 12, and one end of the high-strength steel pin shaft 10 passes through the bottom cross beam 1, the boom rope bottom fork ear 12 and the lower ear plate 17; by setting the lower ear plate 17, the lower ear plate 17 is prevented from being placed between the two bottom cross beams 1, and then the boom rope bottom fork ear 12 is clamped on the lower ear plate 17, and the high-strength steel pin shaft 10 is inserted into the pre-opened holes on the bottom cross beam 1, the boom rope bottom fork ear 12 and the lower ear plate 17 to fix the positions of the lower ear plate 17 and the boom rope bottom fork ear 12.

[0025] In one embodiment, a pin clamp 11 is installed on the front surface of the fork ear 12 of the bottom of the suspension rod; the position of the high-strength steel pin 10 is fixed by the setting of the pin clamp 11.

[0026] In one embodiment, a lower adjusting link 13 is fixedly connected to the top of the fork ear 12 of the bottom of the boom rope, an adjusting sleeve 14 is threadedly connected to the outer surface of the lower adjusting link 13, and an upper adjusting link 15 is threadedly connected to the inner wall of the adjusting sleeve 14; through the setting of the adjusting sleeve 14, the lower adjusting link 13 and the upper adjusting link 15 are threadedly connected to the adjusting sleeve 14, and the adjusting sleeve 14 is rotated by a tool to make the upper adjusting link 15 move closer to or away from the lower adjusting link 13.

[0027] In one embodiment, a cable body 16 is fixedly connected inside the upper adjustment link 15 , and the cable body 16 passes through the top cross beam 6 ; the cable body 16 passes through the top cross beam 6 , and the through hole is larger than the cable body 16 and smaller than the upper adjustment link 15 .

[0028] In one embodiment, two first tension bolts 5 are threadedly connected between the two bottom cross beams 1, and four second tension bolts 7 are threadedly connected between the two top cross beams 6; the two bottom cross beams 1 are fixed by the setting of the first tension bolts 5, and the two top cross beams 6 are fixed by the setting of the four second tension bolts 7.

[0029] When the utility model is in operation, the boom is first hoisted and installed to the designed position, the boom cable bottom fork ear 12 at the bottom of the boom is first connected to the lower ear plate 17 of the arch bottom, and connected through the high-strength steel pin shaft 10, and the adjusting sleeve 14 is rotated manually or by using a special clamp to adjust the length of the boom, so that the pin hole on the boom cable bottom fork ear 12 at the bottom of the boom coincides with the pin hole on the lower ear plate 17 on the steel beam, the high-strength steel pin shaft 10 is installed, and the pin shaft clamping plate 11 is installed to prevent the pin shaft from rotating, first the bottom cross beam 1 is respectively installed on both ends of the high-strength steel pin shaft 10, and the two first tension bolts 5 are pulled against each other, so that the two bottom cross beams 1 clamp the boom cable bottom fork ear 12, and at the same time, the reserved hole on the bottom cross beam 1 just covers the pin shaft clamping plate 11, and the four cross arms 2 are respectively passed through the bottom cross beam 1 A reserved hole is provided, and a bottom pad 3 is provided in the middle of the bottom of the cross arm 2 to form a force transmission component on both sides of the bottom cross beam 1. The top beam is composed of two symmetrical top cross beams 6. The two top cross beams 6 are clamped on both sides of the cable body 16, and the two top cross beams 6 are combined into a top beam and subjected to force at the same time through the second tension bolts 7. The hole in the middle of the top cross beam 6 is slightly larger than the diameter of the cable body 16, and smaller than the outer diameter of the upper adjustment connecting rod 15 at the bottom of the cable body 16. The tensioning force is transmitted to the cable body 16 by using the top support of the upper adjustment connecting rod 15. The steel strand 4 with a fixed anchor end has a fixed conical fixture pre-installed at one end of the steel strand 4, and is mechanically compressed. The steel strand 4 with a fixed anchor end passes through the bottom pad 3, the cross arm 2 and the top cross beam 6, and the upper pad 8 respectively. Two front anchor through-hole jacks 9 are pressed from the top respectively. Figure 1 As shown, the top of the steel strand 4 is clamped, and two front anchor through-core jacks 9 and an oil pump are connected. After the two front anchor through-core jacks 9 clamp the steel strand 4, the oil cylinders are lifted upward at the same time, and the steel strand 4 is pulled, and the tensioning force of the front anchor through-core jacks 9 is respectively transmitted to the cable body 16 and the lower ear plate 17, and at the same time, the lower adjustment link 13 and the upper adjustment link 15 tend to be close to each other. The adjusting sleeve 14 is rotated by a special clamp to tighten the upper and lower adjustment links 13. When the tension is stretched to the designed tension force, the front anchor through-core jacks 9 stop operating, and the adjusting sleeve 14 is tightened by a special tool to further tighten the upper and lower adjustment links 13, thereby tightening the cable body 16, so that the tension of the cable body 16 is consistent with the pulling force of the steel strand 4, which can ensure that the tension of the cable body 16 meets the design requirements.

[0030] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A tool for tensioning a boom, characterized in that: The invention comprises two bottom cross beams (1), the two bottom cross beams (1) are symmetrically pinned with four cross arms (2), the bottoms of the four cross arms (2) are respectively fixedly connected with two bottom pads (3), the bottoms of the two bottom pads (3) are both fixedly connected with steel strands (4), one end of the steel strands (4) passes through the bottom pads (3), two top cross beams (6) are arranged above the bottom cross beams (1), the tops of the top cross beams (6) are symmetrically fixedly connected with two upper pads (8), the tops of the upper pads (8) are installed with front anchor type through-hole jacks (9), one end of the steel strands (4) passes through the top cross beams (6) and the upper pads (8), and one end of the steel strands (4) is fixedly connected to the front anchor type through-hole jacks (9).

2. A tool for tensioning a suspension rod according to claim 1, characterized in that: A lower ear plate (17) is provided between the two bottom cross beams (1), a boom rope bottom fork ear (12) is provided on the top of the lower ear plate (17), a high-strength steel pin shaft (10) is provided on the front surface of the boom rope bottom fork ear (12), and one end of the high-strength steel pin shaft (10) passes through the bottom cross beam (1), the boom rope bottom fork ear (12) and the lower ear plate (17).

3. A tool for tensioning a suspension rod according to claim 2, characterized in that: A pin clamping plate (11) is installed on the front surface of the fork ear (12) at the bottom of the suspension rod.

4. A tool for tensioning a suspension rod according to claim 2, characterized in that: The top of the boom cable bottom fork ear (12) is fixedly connected with a lower adjustment link (13), the outer surface of the lower adjustment link (13) is threadedly connected with an adjustment sleeve (14), and the inner side wall of the adjustment sleeve (14) is threadedly connected with an upper adjustment link (15).

5. A tool for tensioning a suspension rod according to claim 4, characterized in that: A cable body (16) is fixedly connected inside the upper adjustment link (15), and the cable body (16) passes through the top cross beam (6).

6. A tool for tensioning a suspension rod according to claim 1, characterized in that: Two first tension bolts (5) are threadedly connected between the two bottom cross beams (1), and four second tension bolts (7) are threadedly connected between the two top cross beams (6).

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