Bridge swivel supporting leg device

Abstract

The utility model relates to the technical field of bridge rotation construction, in particular to a bridge rotation supporting foot device which comprises a supporting foot base, a supporting column, a sleeve, a sliding disc and a driving mechanism, the supporting column is arranged on the supporting foot base, the sleeve is arranged on the periphery of the supporting column in a sleeved mode, and the sliding disc is arranged on the supporting column. The driving mechanism is installed on the supporting column and is in transmission fit with the sleeve, the sleeve is driven by the driving mechanism to ascend and descend, and the sliding disc is installed at the top end of the sleeve. The bridge swivel supporting leg device has the advantages that the structure is simple, stress is stable, active adjustment of the height of the bridge swivel supporting leg device is achieved, the purpose of reducing unbalanced moment of an upper beam is achieved, and construction safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge rotation construction, in particular to a bridge rotation support leg device. Background Art

[0002] As a construction method widely used in crossing busy railways, highways, deep and swift-flowing canyons, and busy shipping lanes, bridge rotation construction provides reliable guarantees for the safety, quality, and progress of bridge construction under special conditions. The rotation construction technology is increasingly favored by bridge builders for its economic, convenient, and reliable characteristics. As a highly technical specialized construction method, the safety state during the rotation process of a rotating bridge is the key concern during the rotation implementation.

[0003] As a key component of bridge rotation construction, the bridge rotation support leg device plays a role in resisting unbalanced moments during the bridge rotation process and is the key to ensuring the safe and stable rotation of bridge rotation construction. However, the traditional bridge rotation support leg device is not convenient for adjusting its height, which is not conducive to improving construction safety. Summary of the Invention

[0004] The purpose of the utility model is to provide a bridge rotation support leg device according to the deficiencies of the above-mentioned prior art. By setting a transmission mechanism on the support column, the active adjustment of the height of the bridge rotation support leg device is realized, so as to achieve the purpose of reducing the unbalanced moment of the upper beam, and further improve construction safety.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A bridge rotation support leg device, characterized in that: it includes a support leg base, a support column, a sleeve, a sliding disk, and a driving mechanism. The support column is arranged on the support leg base, the sleeve is sleeved on the periphery of the support column, the driving mechanism is installed on the support column and forms a transmission cooperation with the sleeve, the sleeve is lifted and lowered under the drive of the driving mechanism, and the sliding disk is installed at the top end of the sleeve.

[0007] The support leg base and the support column are integrally cast with steel.

[0008] The driving mechanism includes a motor and a planetary gear. The motor is fixedly installed on the support column, and the planetary gear forms a transmission cooperation with both the output end of the motor and the sleeve at the same time.

[0009] An external spiral thread is arranged on the periphery of the planetary gear, and an internal spiral thread is arranged inside the sleeve. The planetary gear is in spiral cooperation with the sleeve, and the planetary gear drives the sleeve to lift and lower through spiral cooperation.

[0010] The sliding disk is welded to the top of the sleeve.

[0011] The sliding disk is composed of a sliding chassis, ball bearings, and a cover plate. The sliding chassis is connected to the top of the sleeve, the ball bearings are installed inside the sliding chassis, and the cover plate is arranged above the ball bearings.

[0012] Both the sliding chassis and the cover plate are provided with V-shaped grooves, and the ball bearings are limited by the V-shaped grooves.

[0013] The V-shaped groove is a 60° V-shaped groove.

[0014] The advantages of the present utility model are: simple structure, stable force application, realizing the active adjustment of the height of the bridge rotating support leg device, thereby achieving the purpose of reducing the unbalanced moment of the upper beam, and further improving the safety of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural view of the sleeve in the present utility model;

[0016] Figure 2 It is a schematic internal structural view of the present utility model;

[0017] Figure 3 It is a schematic top structural view of the present utility model;

[0018] Figure 4 It is a schematic structural view of the sliding disk of the present utility model;

[0019] Figure 5 It is a schematic structural view of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further details the features of the present utility model and other related features through embodiments in conjunction with the drawings for the understanding of those skilled in the same industry:

[0021] As Figures 1-5 shown, the reference numerals 1-8 in the figure respectively represent: support leg base 1, support column 2, sleeve 3, motor 4, planetary gear 5, sliding chassis 6, ball bearing 7, cover plate 8.

[0022] Embodiment: As Figures 1 to 5 shown, in this embodiment, the bridge rotating support leg device is used to support the bottom of the bridge body during the rotating construction of the bridge, resist the unbalanced moment, and ensure the safe and stable rotating construction of the bridge.

[0023] Specifically, in combination with Figures 1 to 5 shown, the bridge rotating support leg device in this embodiment includes a support leg base 1, a support column 2, a sleeve 3, a motor 4, a planetary gear 5, and a sliding disk.

[0024] Among them, the support foot base 1 and the support column 2 are integrally cast in steel, and the support column 2 is arranged above the support foot base 1. A motor 4 is installed on the support column 2, and a planetary gear 5 is installed on the output end of the motor 4, specifically at the center position of the planetary gear 5 so that the planetary gear 5 can rotate under the drive of the motor 4.

[0025] There is an external spiral thread (not shown in the figure for the time being) on the outer side of the outer ring of the planetary gear 5, and an internal spiral thread is provided inside the sleeve 3, and the internal spiral thread matches the external spiral thread of the planetary gear 5. The sleeve 3 is connected to the planetary gear 5 by a spiral fit through the spiral fit between the internal spiral thread and the external spiral thread. At the same time, the sleeve 3 is sleeved around the support column 2, as Figure 3 shown.

[0026] Combined with Figures 3 to 5 shown, a sliding disk is welded to the upper end of the sleeve 3. The sliding disk is divided into three parts: a sliding bottom plate 6, a ball 7, and a cover plate 8. Among them, 60° V-shaped grooves are provided on the top surface of the sliding bottom plate 6 and the bottom surface of the cover plate 8, and the positions of the 60° V-shaped grooves on the upper and lower sides are matched, so that a number of balls 7 can be clamped in the 60° V-shaped grooves on the upper and lower sides to achieve limit. In use, the cover plate 8 is used to contact the upper bearing platform at the bottom of the bridge body.

[0027] In the use of this embodiment, through the rotation of the motor 4, the planetary gear 5 drives, and the sleeve 3 rises and falls through the spiral fit, so that the height of the sliding disk arranged at the top of the sleeve 3 is adjusted, and the sliding disk can prevent the top of the support foot from rotating. When the motor 4 stops rotating, the thread inside the sleeve 3 can be self-locked under the action of gravity to ensure the stability of the bridge body.

[0028] Although the above embodiments have detailed the concept and implementation of the purpose of the present invention with reference to the drawings, those of ordinary skill in the art can recognize that various improvements and transformations can still be made to the present invention without departing from the scope defined by the claims, so they will not be elaborated here one by one.

Claims

1. A bridge swivel support device, characterized in that: It includes a support leg base, a support column, a sleeve, a sliding disk and a driving mechanism, wherein the support column is arranged on the support leg base, the sleeve is sleeved on the periphery of the support column, the driving mechanism is installed on the support column and forms a transmission cooperation with the sleeve, the sleeve rises and falls under the drive of the driving mechanism, and the sliding disk is installed at the top end position of the sleeve.

2. A bridge swivel support device according to claim 1, characterized in that: The support leg base and the support column are cast in one piece with steel.

3. The bridge swivel support device according to claim 1, characterized in that: The driving mechanism comprises a motor and a planetary gear. The motor is fixedly mounted on the support column. The planetary gear forms a transmission match with the output end of the motor and the sleeve at the same time.

4. A bridge swivel support leg device according to claim 3, characterized in that: The outer periphery of the planetary gear is provided with an outer spiral thread opening, the interior of the sleeve is provided with an inner spiral thread opening, the planetary gear and the sleeve are spirally matched, and the planetary gear drives the sleeve to rise and fall through the spiral matching.

5. The bridge swivel support device according to claim 1, characterized in that: The sliding disc is welded to the top end of the sleeve.

6. The bridge rotating support leg device according to claim 1, characterized in that: The sliding plate is composed of a sliding chassis, a ball and a cover plate, wherein the sliding chassis is connected to the top end of the sleeve, the ball is installed in the sliding chassis, and the cover plate is arranged above the ball.

7. A bridge swivel support leg device according to claim 6, characterized in that: The sliding chassis and the cover plate are both provided with V-shaped grooves, and the ball bearings are limited by the V-shaped grooves.

8. The bridge rotation support device according to claim 7, characterized in that: The V-shaped groove is a 60° V-shaped groove.

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