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CN-116770723-B - Tie bar arch suspender tensioning equipment

CN116770723BCN 116770723 BCN116770723 BCN 116770723BCN-116770723-B

Abstract

The application discloses tie bar arch suspender tensioning equipment, which belongs to the technical field of bridge suspender tensioning, and comprises a support fixedly arranged on an arch rib and a lifting structure for tensioning the suspender, wherein a storage groove is formed in the arch rib, one end of the suspender penetrates through the inner wall of the storage groove, a clamping groove is formed in the suspender, the lifting structure comprises a support plate, a first screw rod, a driving assembly and two clamping rods, a sliding groove is formed in the support plate, two ends of the first screw rod are respectively and rotatably connected to the opposite inner wall of the sliding groove, the clamping rods are in threaded connection with the first screw rod, the driving assembly drives the first screw rod to rotate, a second screw rod is rotatably arranged on the support, the support plate is in threaded connection with the second screw rod, a guide rod is fixedly arranged on the support, the support plate slides on the guide rod, and the lifting structure further comprises a transmission assembly which drives the second screw rod to rotate through the transmission assembly. The application has the effects of simplifying equipment installation and disassembly steps, increasing working efficiency and shortening construction period.

Inventors

  • LI SHUAI
  • Liu Zongzu
  • YANG DONG
  • HOU LIJUN
  • MA MENGMENG
  • GUO QINGSONG
  • XU XIAO

Assignees

  • 中铁二十四局集团有限公司
  • 中铁二十四局集团安徽工程有限公司

Dates

Publication Date
20260505
Application Date
20230627

Claims (10)

  1. 1. The tie bar arch suspender tensioning equipment is characterized by comprising a support (3) fixedly arranged on an arch rib (1) and a lifting structure (48) for tensioning the suspender (2), wherein a storage groove (4) is formed in the arch rib (1), one end of the suspender (2) is penetrated through the inner wall of the storage groove (4), and a clamping groove (5) is formed in the suspender (2); The lifting structure (48) comprises a support plate (6), a first screw rod (10), a driving assembly (8) and two clamping rods (7), wherein a sliding groove (9) is formed in the support plate (6), two ends of the first screw rod (10) are respectively connected to the opposite inner walls of the sliding groove (9) in a rotating mode, the clamping rods (7) are connected to the first screw rod (10) in a threaded mode, and the driving assembly (8) drives the first screw rod (10) to rotate; the support (3) is rotatably provided with a second screw rod (11), the support plate (6) is in threaded connection with the second screw rod (11), the support (3) is fixedly provided with a guide rod (12), the support plate (6) slides in the guide rod (12), the lifting structure (48) further comprises a transmission assembly (13), and the driving assembly (8) drives the second screw rod (11) to rotate through the transmission assembly (13).
  2. 2. The tie-bar arch boom tensioning device according to claim 1, wherein a guide cylinder (14) is fixedly arranged on the support plate (6), a guide elastic sheet (15) is fixedly arranged in the guide cylinder (14), the guide elastic sheet (15) is abutted against the boom (2), a through hole (16) is formed in the side wall of the guide cylinder (14), and the clamping rod (7) slides in the through hole (16).
  3. 3. The tie-bar arch boom tensioning device according to claim 1, wherein the driving assembly (8) comprises a motor (17), a telescopic rod (18), a first bevel gear (19), a second bevel gear (20) and two groups of bevel gears (21), a fixed box (41) is fixedly installed on the support (3), the motor (17) slides in the fixed box (41), the telescopic rod (18) is rotatably connected to the support (3), the first bevel gear (19) is fixedly sleeved on a rotating shaft of the motor (17), a connecting plate (46) is fixedly arranged on the support (3), a connecting shaft (47) is rotatably connected to the connecting plate (46), the second bevel gear (20) is fixedly sleeved on the connecting shaft (47), the connecting shaft (47) is connected with the telescopic rod (18) through one group of bevel gears (21), the first lead screw (10) is connected with the telescopic rod (18) through the other group of bevel gears (21), and the first bevel gear (19) is meshed with the second bevel gear (20).
  4. 4. A tie-bar arch boom tensioning device according to claim 3, characterized in that the transmission assembly (13) comprises a third bevel gear (22) and a fourth bevel gear (23), the third bevel gear (22) and the fourth bevel gear (23) are respectively and fixedly sleeved on the second screw rod (11), a lifting assembly (25) for lifting the motor (17) is arranged in the fixed box (41), and the first bevel gear (19) is meshed with the third bevel gear (22).
  5. 5. The tie-bar arch boom tensioning device of claim 4, wherein a placement groove (26) is formed in the clamping rod (7), a first air bag (27) is arranged in the placement groove (26), a first sensing block (28) is slidably moved in the placement groove (26), and the first sensing block (28) can be abutted against the inner wall of the clamping groove (5); A sliding groove (29) is formed in the inner wall of the placement groove (26), a sliding block (30) slides in the sliding groove (29), the sliding block (30) is fixedly connected to the first sensing block (28), a first spring (31) is arranged in the sliding groove (29), and two ends of the first spring (31) are respectively and fixedly connected to the sliding block (30) and the inner wall of the sliding groove (29); The storage groove (32) is formed in the first sensing block (28), the storage groove (32) is communicated with the placement groove (26), a pushing plate (33) slides in the storage groove (32), the first air bag (27) is abutted to the pushing plate (33), a second spring (34) is arranged between the pushing plate (33) and the inner wall of the storage groove (32), and a limiting assembly (35) for limiting the pushing plate (33) is arranged on the inner wall of the storage groove (32).
  6. 6. The tie-bar arch boom tensioning device of claim 5, wherein the limiting assembly (35) comprises a second sensing block (36) and a limiting block (37), the second sensing block (36) is arranged in a penetrating mode and is connected to the inner wall of the storage groove (32) in a sliding mode, the second sensing block (36) is abutted to the inner wall of the clamping groove (5), the limiting block (37) is fixedly connected to the push plate (33), an inclined surface is arranged on the limiting block (37), and a limiting groove (38) for the limiting block (37) to be inserted in is formed in the second sensing block (36).
  7. 7. The tie-bar arch boom tensioning device of claim 6, wherein a third spring (39) is disposed within the reservoir (32), and two ends of the third spring (39) are fixedly connected to the second sensor block (36) and the inner wall of the reservoir (32), respectively.
  8. 8. The tie-bar arch boom tensioning device of claim 5, wherein the lifting assembly (25) comprises a lifting plate (40), a hose (42) and a second air bag (43), wherein the lifting plate (40) slides in the cavity of the fixed box (41), the motor (17) is mounted on the lifting plate (40), the second air bag (43) is arranged in the fixed box (41), and two ends of the hose (42) are respectively connected with the first air bag (27) and the second air bag (43) in a sealing mode.
  9. 9. The tie-bar arch boom tensioning device of claim 1, wherein a rubber pad (44) is fixedly arranged on the clamping rod (7), and the rubber pad (44) abuts against the inner wall of the clamping groove (5).
  10. 10. A tie-bar arch boom tensioning device according to claim 8, characterized in that a sensor (45) for detecting the prestress value of the boom (2) is mounted on the boom, a switch for inflating and deflating is provided on the second air bag (43), and the sensor (45) can control the switch on the second air bag (43) and the turning of the motor (17) shaft.

Description

Tie bar arch suspender tensioning equipment Technical Field The application relates to the technical field of bridge suspender tensioning, in particular to tie-bar arch suspender tensioning equipment. Background The bridge suspender is a main bearing member of the bridge, the suspender generally adopts a rigid prestressed suspender or a flexible prestressed suspender, the upper end of the suspender generally penetrates through an arch rib, the suspender is anchored on an arch rib upper edge tensioning base, the lower end of the suspender is anchored on a hanging point beam lower edge fixing base, and in the construction process of the bridge, the suspender is usually required to be prestressed by an external tensioning device so as to generate certain deformation to cope with the load born by the structure, including the load of the self weight of the member, wind load, snow load, earthquake load action and the like. The existing tensioning equipment usually adopts an anchor to fix one end of a suspender, the tensioning end anchor consists of a clamping piece, an anchor ring, an anchor backing plate and a spiral rib, and after a worker assembles various parts of the anchor, the anchor is fixedly arranged on the suspender, the worker pulls the anchor to move by using a jack or an oil pump, so that the effect of tensioning the suspender is achieved. Aiming at the related technology, the inventor considers that the number of parts for manually installing the anchorage device is large, and the parts are cumbersome and troublesome in installation and disassembly, thereby reducing the working efficiency and increasing the construction period. Disclosure of Invention In order to simplify the equipment mounting and dismounting steps, thereby increasing the working efficiency, shortening the construction period and saving the cost, the application provides the tie-bar arch suspender tensioning equipment. The tie-bar arch suspender tensioning equipment provided by the application adopts the following technical scheme: the tie bar arch suspender tensioning equipment comprises a support fixedly arranged on an arch rib and a lifting structure for tensioning the suspender, wherein the arch rib is provided with a storage groove, and one end of the suspender is penetrated through the inner wall of the storage groove; the lifting structure comprises a support plate, a first screw rod, a driving assembly and two clamping rods, wherein a sliding groove is formed in the support plate, two ends of the first screw rod are respectively connected to the inner wall of the sliding groove in a rotating mode, and the clamping rods are connected to the first screw rod in a threaded mode; The support is rotatably provided with a second screw rod, the support is in threaded connection with the second screw rod, the support is fixedly provided with a guide rod, the support slides on the guide rod, the lifting structure further comprises a transmission assembly, and the transmission assembly drives the second screw rod to rotate. Through the technical scheme, when a worker needs to stretch the suspender, firstly, the worker installs the support and the lifting structure on the arch rib, then, the worker rotates the second screw rod through the driving component and the transmission component, the second screw rod rotates to drive the support plate to move downwards to a proper position under the action of the guide rod, the driving component drives the first screw rod to rotate, the first screw rod rotates to drive the clamping rod to move, after the clamping rod moves to the clamping groove spliced on the suspender, under the action of the driving component and the transmission component, the first screw rod stops rotating, the second screw rod reverses to drive the support plate to move upwards, the support plate moves to drive the clamping rod to move, the clamping rod is driven to pull the suspender upwards, so that the stretching operation of the suspender is completed, and complex installation of stretching equipment on the suspender is reduced, so that the installation and the disassembly are convenient, the working efficiency is improved, and the construction period is shortened. Preferably, a guide cylinder is fixedly arranged on the support plate, a guide elastic sheet is fixedly arranged in the guide cylinder, the guide elastic sheet is abutted to the suspender, a through hole is formed in the side wall of the guide cylinder, and the clamping rod slides in the through hole. Through adopting above-mentioned technical scheme, when the staff installs and carries and draw the structure, the guide cylinder is installed in the top of jib, when the extension board downwardly moving, the guide cylinder follows the extension board downwardly moving, when the jib inserts the in-process of guide cylinder, jib butt and extrusion direction shell fragment remove, until the grip lever aligns the grip groove on the jib, the guide cylinder can b