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CN-122013673-A - Temporary bridge unloading support

CN122013673ACN 122013673 ACN122013673 ACN 122013673ACN-122013673-A

Abstract

The invention provides a temporary bridge unloading support, which relates to the technical field of bridge construction and comprises a concrete foundation block, a support frame main body, a support beam and an unloading adjusting assembly, wherein the unloading adjusting assembly is arranged above a longitudinal beam and comprises an upper support, a lower support and side supports positioned on two sides of the upper support and the lower support, mutually-attached contact inclined planes are arranged between the upper support and the side supports, mutually-attached contact inclined planes are also arranged between the lower support and the side supports, an adjusting screw is connected between the two side supports and used for adjusting the distance between the two side supports so as to adjust the distance between the upper support and the lower support under the action of the contact inclined planes, and the temporary bridge unloading support also comprises a locking assembly. The invention can meet the arrangement requirements of different bridge structures, improve the overall stability and bearing capacity, realize reliable locking after height adjustment, reduce the relative displacement after loading and improve the safety and stability of the unloading operation.

Inventors

  • YU XIN
  • QU HONGLIANG
  • LIN XIAOCHENG
  • WANG GUANGBAO
  • ZHAO JIANGFENG
  • HU HUITAO
  • FAN JICHENG
  • Zhang Hugui
  • WU XIAO

Assignees

  • 中交隧道工程局有限公司

Dates

Publication Date
20260512
Application Date
20260323

Claims (10)

  1. 1. The temporary bridge unloading support is characterized by comprising a concrete foundation block (100), wherein a support frame main body (200) is arranged on the concrete foundation block (100), a support beam (300) is arranged at the top of the support frame main body (200), and at least one unloading adjusting assembly (400) is arranged on the support beam (300), wherein: The support frame body (200) includes vertical columns (210), and a cross connecting member (220) and a diagonal bracing member (230) connected between the vertical columns (210); The support beam (300) comprises a cross beam (310) arranged at the top of the support frame main body (200) and longitudinal beams (320) which are arranged on the cross beam (310) in a crossing manner; the unloading adjusting assembly (400) is arranged above the longitudinal beam (320), the unloading adjusting assembly (400) comprises an upper support (410), a lower support (420) and side supports (430) arranged on two sides of the upper support (410) and the lower support (420), contact inclined planes (440 a) which are mutually attached are arranged between the upper support (410) and the side supports (430), and contact inclined planes (440 a) which are mutually attached are also arranged between the lower support (420) and the side supports (430); An adjusting screw (450) is connected between the two side supports (430), and the adjusting screw (450) is used for adjusting the distance between the two side supports (430) so as to adjust the distance between the upper support (410) and the lower support (420) under the action of the contact inclined surface (440 a); a locking assembly (500) for locking and positioning the relative positions of the upper mount (410) and the side mount (430) is provided at the contact slope (440 a) between the upper mount (410) and the side mount (430) and at the contact slope (440 a) between the lower mount (420) and the side mount (430).
  2. 2. The temporary bridge unloading support according to claim 1, wherein the locking assembly (500) comprises a sliding seat (510), a clamping block (520) and a driving member (530), sliding grooves (431) are formed in contact inclined planes (440 a) on the upper side and the lower side of each side support (430) along the length direction, the sliding seat (510) is slidably arranged in the sliding grooves (431), the clamping block (520) is slidably inserted into the sliding seat (510), positioning grooves (421) are formed in positions, corresponding to the clamping block (520), on the contact inclined planes (440 a) of the upper support (410) and the lower support (420), of the clamping block (520), the clamping block (520) is slidably arranged in the positioning grooves (421), the positioning grooves (421) are long-strip grooves, tooth grooves (4211) are formed in the positioning grooves (421) along the length direction, tooth grooves (520) are formed in the length direction, and the tooth grooves (520) are formed in the tooth grooves (440) in the contact inclined planes (440 a) and are used for being meshed with the driving member (521) or the driving member (521) is far away from each other.
  3. 3. Temporary bridge unloading support according to claim 2, wherein the sliding grooves (431) on the contact inclined surfaces (440 a) on the upper and lower sides of each side support (430) are provided with a pair, and the positioning grooves (421) are correspondingly provided with a pair, and the positioning grooves (421) are arranged in a splayed shape.
  4. 4. Temporary bridge unloading bracket according to claim 2, characterized in that the driving element (530) comprises an electromagnet (531), and the clamping block (520) is provided with a first magnetic element (522) which is attracted to or repulsed from the electromagnet (531).
  5. 5. The temporary bridge unloading bracket according to claim 4, wherein the locking assembly (500) further comprises a locking block (540), a mounting groove (5201) is formed in one side of the latch (521) on the clamping block (520), the locking block (540) is slidably arranged in the mounting groove (5201), a locking tooth (541) corresponding to the latch (521) is arranged on the locking block (540), and the locking block (540) is configured to be driven by the driving piece (530) to be close to or far from the tooth groove (4211) and provide a rotation moment so that the locking tooth (541) is rotationally clamped on the tooth groove (4211).
  6. 6. The temporary bridge unloading bracket according to claim 5, wherein a second magnetic member (542) is arranged on the locking piece (540), and the second magnetic member (542) can be attracted or repelled by the electromagnet (531).
  7. 7. The temporary bridge unloading bracket according to claim 6, wherein a first chute (52011) and a second chute (52012) are formed in an inner wall of the mounting groove (5201), the first chute (52011) and the second chute (52012) are mutually communicated, the first chute (52011) and an axial direction of the mounting groove (5201) are mutually parallel, the second chute (52012) is in an arc-shaped arrangement, a ball (543) is fixedly arranged on a side wall of the locking piece (540), the ball (543) can slide in the first chute (52011) and the second chute (52012), the locking piece (540) is located in the mounting groove (5201) in an initial state, and the ball (543) gradually extends out of the mounting groove (1) and provides a rotation moment under the guidance of the second chute (52012) in a process of moving the first chute (52011) into the second chute (52012).
  8. 8. The temporary bridge unloading bracket according to claim 2, wherein a limiting block (511) is arranged on the sliding seat (510), a limiting groove (4311) is formed in the side wall of the sliding groove (431) along the length direction, and the limiting block (511) is slidably connected in the limiting groove (4311).
  9. 9. The temporary bridge unloading bracket according to claim 1, wherein the upper support (410) and the lower support (420) are respectively provided with an ear plate (422), a positioning screw (600) is arranged between the upper ear plate (422) and the lower ear plate (422), and a positioning nut (610) is arranged on the positioning screw (600) in a threaded manner.
  10. 10. The temporary drop bracket of claim 1, wherein the cross beam (310) and the longitudinal beam (320) are each of a double-jointed steel structure.

Description

Temporary bridge unloading support Technical Field The invention relates to the technical field of bridge construction, in particular to a temporary bridge unloading bracket. Background In bridge construction and existing bridge maintenance, reinforcement or support replacement processes, particularly in the prefabricated capping beam installation construction links, temporary support and unloading operations are often required to be carried out on a bridge upper structure or a member to be installed so as to realize temporary load transfer or staged release. For this reason, temporary drop brackets are generally provided under the bridge or near the pier for receiving the self weight and construction load of the prefabricated capping beam and the upper structure and reliably transmitting the load to the foundation by the brackets. Along with the improvement of bridge span and load grade and the improvement of the installation precision requirement of the prefabricated bent cap in the assembly type construction, the method has higher requirements on the overall stability, modularization requirement, bearing capacity and space rigidity of the temporary drop bracket. Therefore, it is necessary to provide a support structure which is reasonable in structure and suitable for the installation and temporary unloading operation of the prefabricated capping beam so as to meet the requirements of engineering construction safety and applicability. Disclosure of Invention The invention aims to provide a temporary bridge drop bracket which can meet the arrangement requirements of different bridge structures, improve the overall stability and bearing capacity, realize reliable locking after height adjustment, reduce the relative displacement after loading and improve the safety and stability of drop operation. The invention is realized by the following technical scheme: The temporary bridge unloading support comprises a concrete foundation block, wherein a support frame main body is arranged on the concrete foundation block, a support beam is arranged at the top of the support frame main body, and at least one unloading adjusting assembly is arranged on the support beam, wherein: The support frame main body comprises vertical upright posts, and a transverse connecting member and an inclined strut member which are connected between the vertical upright posts; the support beam comprises a cross beam arranged at the top of the support frame main body and longitudinal beams arranged on the cross beam in a crossing manner; The unloading adjusting assembly is arranged above the longitudinal beam and comprises an upper support, a lower support and side supports positioned on two sides of the upper support and the lower support, wherein a contact inclined plane which is mutually attached is arranged between the upper support and the side support, and a contact inclined plane which is mutually attached is also arranged between the lower support and the side support; an adjusting screw is connected between the side supports at two sides and is used for adjusting the distance between the side supports at two sides so as to adjust the distance between the upper support and the lower support under the action of the contact inclined plane; The contact inclined surface between the upper support and the side support and the contact inclined surface between the lower support and the side support are provided with locking components for locking and positioning the relative positions of the upper support and the side support. Preferably, the locking component comprises a sliding seat, a clamping block and a driving piece, wherein sliding grooves are formed in the contact inclined planes on the upper side and the lower side of each side support along the length direction, the sliding seat is arranged in the sliding grooves in a sliding manner, the clamping block is inserted in the sliding seat in a sliding manner, the upper support and the lower support are arranged on the contact inclined planes in a sliding manner, a positioning groove is formed in the position, corresponding to the clamping block, of the contact inclined planes, the clamping block is arranged in the positioning groove in a sliding manner, the positioning groove is a long-strip groove, the length direction of the positioning groove is offset with the length direction of the side support, tooth grooves are formed in the positioning groove along the length direction, clamping teeth meshed with the tooth grooves are formed in the clamping block, and the driving piece is used for driving the clamping block to be close to or far away from the tooth grooves. Preferably, a pair of sliding grooves is formed in the contact inclined planes on the upper side and the lower side of each side support, a pair of positioning grooves is correspondingly formed, and the positioning grooves are distributed in a splayed shape. Preferably, the driving member comprises an electromagnet, and th