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CN-224227666-U - Convenient integrated tensioning device for negative bending moment of bridge

CN224227666UCN 224227666 UCN224227666 UCN 224227666UCN-224227666-U

Abstract

The utility model discloses a convenient and fast integrated bridge hogging moment tensioning device which comprises a movable trolley, a support, a suspender, a cross rod and a jack, wherein the support is of a square frame structure which is vertically arranged, a guide assembly which is vertically arranged is arranged outside the support, the suspender vertically penetrates through the guide assembly so that the suspender can move along the vertical direction of the support, a lifting mechanism is arranged on the support, the cross rod is fixed at the bottom of the suspender, one end of the cross rod extends outwards to form a lifting part, the other end of the cross rod is used for placing the jack, the jack is configured to move along the cross rod, a fixed frame is arranged at one end of the movable trolley far away from the support, and a tensioning equipment host is arranged in the fixed frame. This tensioning device adopts square frame structure to lead the guide arm, removes the lifting point simultaneously from the top to on the horizontal pole, and the dolly is terminal to regard as the counter weight with tensioning equipment host computer to effectively solved the lifting point and be located the jib top, the poor problem of dolly stability that the triangle-shaped support leans forward to lead to.

Inventors

  • YIN HONGYUE
  • ZHAO WENTAO
  • YU YIXIN
  • YANG SHUMIN
  • LI BINGNAN
  • LI GANG
  • LI QICHAO
  • WANG TAIPING
  • ZHAO JINHONG
  • YANG JIE
  • ZHANG LEI
  • CHEN JIHONG
  • JIANG BAOXI
  • Yosho Masamitsu
  • YANG HONGBO
  • LIU XI

Assignees

  • 云南省建设投资控股集团有限公司

Dates

Publication Date
20260512
Application Date
20250529

Claims (10)

  1. 1. The convenient and integrated bridge hogging moment tensioning device comprises a movable trolley (1), a bracket (2), a suspender (3), a cross rod (4) and a jack (5), and is characterized in that the bracket (2) is of a square frame structure which is vertically arranged, a guide assembly which is vertically arranged is arranged outside the bracket (2), and the suspender (3) vertically penetrates through the guide assembly, so that the suspender (3) can move along the vertical direction of the bracket (2); The lifting mechanism is arranged on the bracket (2), the cross rod (4) is fixed at the bottom of the boom (3), one end of the cross rod extends outwards to form a lifting part (42), the other end of the cross rod is used for placing the jack (5), and the jack (5) is configured to move along the cross rod (4); One end of the movable trolley (1) far away from the support is provided with a fixed frame (11), and the tensioning equipment host machine (6) is arranged in the fixed frame (11).
  2. 2. A bridge hogging moment convenient integrated tensioning device according to claim 1, wherein the guiding assembly comprises at least one guiding sleeve (71), and the boom (3) is arranged in the guiding sleeve (71) in a penetrating way.
  3. 3. The bridge hogging moment convenient integrated tensioning device according to claim 2, wherein two guide sleeves (71) are arranged and distributed at the upper end and the lower end of the bracket (2), and guide rings (72) are arranged between the two guide sleeves (71).
  4. 4. A bridge hogging moment convenient integrated tensioning device according to claim 2 or 3, wherein a plurality of balls (73) are arranged along the inner circumference of the guide sleeve (71) inside the guide sleeve (71).
  5. 5. The bridge hogging moment convenient integrated tensioning device according to claim 1, wherein a sliding rail (41) is arranged on the cross rod (4), and the jack (5) is connected to the sliding rail (41) in a sliding manner.
  6. 6. The bridge hogging moment convenient integrated tensioning device according to claim 5, wherein the jack (5) is arranged on a rotating seat (53), the rotating seat (53) is rotatably connected on a sliding seat (52), and the sliding seat (52) is slidably connected on the sliding rail (41).
  7. 7. The bridge hogging moment convenient integrated tensioning device according to claim 6, wherein a pulley (51) is arranged at the bottom of the sliding seat (52).
  8. 8. A bridge hogging moment convenient integrated tensioning device according to claim 6 or 7, wherein a locking member is provided on the rotating seat (53), said locking member being adapted to lock the rotating seat (53) for locking the jack (5).
  9. 9. The bridge hogging moment convenient integrated tensioning device according to claim 1, wherein the lifting mechanism is a manual hoist (8), a lifting ring (43) is arranged on the lifting part (42), and the manual hoist (8) is connected with the lifting ring (43).
  10. 10. The bridge hogging moment convenient integrated tensioning device according to claim 1, wherein one end of the movable trolley (1) far away from the bracket (2) is provided with a supporting leg (12).

Description

Convenient integrated tensioning device for negative bending moment of bridge Technical Field The utility model relates to the technical field of bridge construction, in particular to a convenient and fast integrated tensioning device for a negative bending moment of a bridge. Background The bridge hogging moment stretch-draw is a key technology in the construction of prestressed concrete bridges, and is mainly used for counteracting the hogging moment generated by a bridge structure under the action of load, thereby preventing concrete from cracking and improving the bearing capacity and durability of the structure. In Chinese patent CN 215104743U, a bridge hogging moment stretching device and an operation platform lifting device are disclosed, wherein the front end of a trolley platform is welded by adopting a steel pipe to form a triangular bracket, the top of the triangular bracket is provided with a pulley, and a lifting rod is lifted through the top of a winch-driven lifting rod. Under this structure, triangle-shaped support needs to lean forward certain angle to avoid the problem of jib and dolly interference, this is just that the holistic steadiness of structure is relatively poor. Based on the above, a bridge hogging moment tensioning device with good stability is needed. Disclosure of utility model According to the portable integrated tensioning device for the negative bending moment of the bridge, the square frame structure is adopted, so that the stability problem caused by forward tilting of the existing triangular support can be avoided, and meanwhile, the main machine of the tensioning device is used as a counterweight, so that the stability of the integral structure can be effectively improved. Specifically, the utility model is realized as follows: The convenient and fast integrated bridge hogging moment tensioning device comprises a movable trolley, a bracket, a suspender, a cross rod and a jack, wherein the bracket is of a square frame structure which is vertically arranged, a guide assembly which is vertically arranged is arranged outside the bracket, and the suspender vertically penetrates through the guide assembly so that the suspender can move along the vertical direction of the bracket; The lifting mechanism is arranged on the bracket, the cross rod is fixed at the bottom of the lifting rod, one end of the cross rod extends outwards to form a lifting part, the other end of the cross rod is used for placing the jack, and the jack is configured to move along the cross rod; the one end that the travelling car kept away from the support is provided with fixed frame, stretch-draw equipment host computer set up in fixed frame. Further, the guide assembly comprises at least one guide sleeve, and the suspender penetrates through the guide sleeve. Further, two guide sleeves are arranged and distributed at the upper end and the lower end of the support, and guide rings are arranged between the two guide sleeves. Further, a plurality of balls are arranged in the guide sleeve along the inner circumference of the guide sleeve. Further, a sliding rail is arranged on the cross rod, and the jack is connected to the sliding rail in a sliding manner. Further, the jack is arranged on the rotating seat, the rotating seat is rotationally connected to the sliding seat, and the sliding seat is slidingly connected to the sliding rail. Further, the bottom of the sliding seat is provided with a pulley. Further, a locking piece is arranged on the rotating seat and used for locking the rotating seat so as to lock the jack. Further, the lifting mechanism is a manual hoist, a lifting ring is arranged on the lifting part, and the manual hoist is connected with the lifting ring. Further, one end of the movable trolley far away from the bracket is provided with a support leg. The working principle of the utility model is as follows: When the device is used, the mobile trolley is moved to the edge of a bridge, then the boom, the cross rod and the jack are lowered through the manual hoist, the jack is positioned below the bridge, the boom and the cross rod are manually rotated, the cross rod faces to the inner side, then the jack is moved, the jack corresponds to the prestressed steel beam of the bridge in position, the jack is rotated, after the jack is aligned with the prestressed steel beam of the bridge, the jack is connected with the prestressed steel beam, and the jack applies design tension to the steel beam, so that the negative bending moment tensioning of the bridge is realized. Compared with the prior art, the utility model has the beneficial effects that: (1) According to the bridge hogging moment convenient integrated tensioning device provided by the utility model, the square frame structure is adopted to guide the guide rod, the lifting point is moved to the cross rod from the top, and the main machine of tensioning equipment is used as a counterweight at the tail end of the trolley, so that the probl