Lifting device for trestle at navigation hole
By designing a lifting device on the steel trest at the navigation hole, the lifting and lowering of the trest is achieved by using structural auxiliary piers, lifting load-bearing piers and lifting components, the contradiction between navigation and construction is solved, and the dual advantages of navigation and vehicle traffic are realized.
Patent Information
- Application Number
- CN202411693959.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-02-14
AI Technical Summary
When the steel trest at the navigation hole meets the requirements of navigation clearance, the construction cost is high and the daily driving safety risks are high. Disconnecting the trest will affect the construction period and increase costs.
Design a lifting device for the trest at the navigation hole, including two sets of lifting components and two sets of bracket components. By setting structural auxiliary piers and lifting load-bearing piers at both ends of the trest to be lifted, and setting lifting components on the support longitudinal beams, the The lifting and descent of the trestle.
It solves the problems of high navigation hole height and excessively long steel pipe piles and poor stability, ensures the normal use of steel trestles during navigable waters and the construction of steel trestles during engineering construction, realizes the value of both vehicle traffic and ship navigation, and is economical and Advantages of safety.
Smart Images
Figure CN119434078A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a lifting device for a trestle at a navigation hole. Background Art
[0002] The steel trestle constructed in this project just covers a company's current access to the sea, and there is also a fishing boat berth on the north side. Fishing boats come in and out every day, posing a relatively large safety hazard.
[0003] Temporary steel trestles at navigation holes generally adopt two treatment solutions: raising the bridge deck elevation of the navigation hole and disconnecting the trestles. When the navigation clearance height requirement meets 4.5m, the construction solution of raising the bridge deck elevation of the navigation hole will greatly increase the construction cost. At the same time, the longitudinal slope before and after the navigation hole is large, which poses a great safety hazard to daily driving.
[0004] If this part is disconnected, the entire trestle will not be connected, and the subsequent transportation of steel bars and materials must detour 2km to meet the construction requirements, which not only increases the cost but also affects the construction period. Therefore, it is urgent to solve the contradiction between navigation and trestle traffic; therefore, a lifting device for the trestle at the navigation hole is proposed to solve the above problems. Summary of the invention
[0005] The purpose of the present invention is to overcome the existing defects and provide a lifting device for a trestle at a navigation hole, thereby ensuring smooth navigation of ships passing through the navigable waters and normal use of the steel trestle during engineering construction.
[0006] The technical solution to achieve the above-mentioned purpose is: a lifting device for a pier at a navigation hole, comprising two groups of lifting assemblies and two groups of support assemblies; the pier to be lifted is located between two fixed piers, and the front and rear sides of the pier to be lifted are each connected to a group of the support assemblies, the support assemblies are connected to the fixed piers on both sides, the lifting assembly is connected to the support assembly, and the lifting assembly is connected to the pier to be lifted.
[0007] Preferably, the support assembly includes two structural auxiliary piers, the two structural auxiliary piers are respectively arranged under the two fixed trestles, a lifting load-bearing pier is respectively arranged on the two structural auxiliary piers, the upper ends of the two lifting load-bearing piers are respectively connected to a lifting beam, and a supporting longitudinal beam is connected between the two lifting beams; the two ends of the lower end surface of the trestle to be lifted are respectively connected to a lifting beam; the lifting assembly is arranged on the supporting longitudinal beam.
[0008] Preferably, the lifting assembly includes a lifting motor group, which is arranged at one end of the upper end surface of the supporting longitudinal beam, and a first pulley group is arranged at the other end of the upper end surface of the supporting longitudinal beam. The second pulley group is connected to the lifting beam at one end of the lower end surface of the pier to be lifted, and the third pulley group is connected to the lifting beam at the other end; the lifting motor group is connected to the third pulley group through a first steel wire rope, and the lifting motor group is connected to the second pulley group after bypassing the first pulley group through a second steel wire rope.
[0009] Preferably, the lifting motor group includes an electric motor, a reducer, a winch frame and a drum; the drum is rotatably connected to the winch frame, the output end of the electric motor is connected to the reducer, and the output end of the reducer is connected to one end of the drum.
[0010] Preferably, fences are provided at the front and rear sides of the fixed trestle and the trestle to be lifted.
[0011] Preferably, the structural auxiliary pier and the lifting load-bearing pier are assembled from multiple steel pipe piles.
[0012] Preferably, the lifting beam, supporting longitudinal beam and hoisting beam are all I-beams.
[0013] Preferably, the upper end surfaces of the fixed trestle and the trestle to be lifted are both provided with patterned steel plates.
[0014] The beneficial effects of the present invention are as follows: the lifting device of the pier at the navigation hole can lift and lower the pier to be lifted at the navigation hole by arranging structural auxiliary piers at both ends of the pier to be lifted, arranging lifting load-bearing piers on the structural auxiliary piers, and arranging lifting components on the supporting longitudinal beams, thereby solving the contradiction between the high height of the navigation hole and the excessively long and poor stability of the steel pipe piles, ensuring the smooth navigation of ships passing through the navigable waters and the normal use of the steel pier during engineering construction, achieving the value of both the passage of vehicles on the steel pier and the navigation of ships under the bridge, and having advantages in terms of economy and safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a front view of the trestle at the navigation hole of the present invention before it is lifted;
[0016] Figure 2 It is a side view of the trestle at the navigation hole of the present invention without being raised;
[0017] Figure 3 It is a front view of the lifting of the trestle at the navigation hole of the present invention;
[0018] Figure 4 It is a side view of the lifting of the trestle at the navigation hole of the present invention;
[0019] Figure 5 It is a schematic diagram of the lifting motor group of the present invention.
[0020] In the figure: 1. Fixed trestle; 2. Trestle to be lifted; 3. Structural auxiliary piers; 4. Lifting load-bearing piers; 5. Lifting beams; 6. Supporting longitudinal beams; 7. Lifting beams; 8. Lifting motor group; 9. First pulley block; 10. Second pulley block; 11. Third pulley block; 12. First steel wire rope; 13. Second steel wire rope; 14. Fence; 81. Electric motor; 82. Reducer; 83. Winch frame; 84. Drum. DETAILED DESCRIPTION
[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0022] The present invention will be further described below in conjunction with the accompanying drawings.
[0023] like Figure 1-5 As shown, a lifting device for a trestle at a navigation hole includes two groups of lifting components and two groups of bracket components; the trestle 2 to be lifted is located between two fixed trestles 1, and the front and rear sides of the trestle 2 to be lifted are each connected to a group of bracket components, the bracket components are connected to the fixed trestles 1 on both sides, the lifting components are connected to the bracket components, and the lifting components are connected to the trestle 2 to be lifted. The front and rear sides of the fixed trestles 1 and the trestles 2 to be lifted are both provided with fences 14. The upper end surfaces of the fixed trestles 1 and the trestles 2 to be lifted are both provided with patterned steel plates. A control cabinet is also provided on one of the fixed trestles 1.
[0024] The lifting device of the pier at this navigation hole solves the contradiction between the high height of the navigation hole and the excessively long and unstable steel pipe piles when there is a navigation requirement for the steel pier in the sea, ensures the smooth navigation of ships passing through the navigable waters and the normal use of the steel pier during the construction period, and realizes the value of both the passage of vehicles on the steel pier and the navigation of ships under the bridge, which has advantages in terms of economy and safety.
[0025] The fixed trestle 1 and the trestle 2 to be lifted have an overall span of 15m, a bridge deck width of 6m, an overall lifting length of the trestle 2 to be lifted of 18m, and the panel is made of δ10 patterned steel plate. The fixed trestle 1 and the trestle 2 to be lifted are provided with longitudinal distribution beams with a spacing of 30cmI 12.6 I-beams, and transverse distribution beams with a spacing of 80cmI 20 I-beams. There are 3 groups of three-piece Bailey beams under the distribution beams, and double-piece Ⅰ45a I-beams are used on the pile tops.
[0026] Specifically, the pier at the navigation channel (pier to be lifted 2) adopts a movable beam surface overall lifting design, a lifting support beam is arranged under the Bailey beam, and a power lifting component is arranged on the basis of the lifting pipe pile. When the ship passes, the Bailey beam and its upper bridge span and auxiliary structure are lifted as a whole.
[0027] Specifically, the support assembly includes two structural auxiliary piers 3, the two structural auxiliary piers 3 are respectively arranged under the two fixed trestles 1, and a lifting load-bearing pier 4 is respectively arranged on the two structural auxiliary piers 3, and the upper ends of the two lifting load-bearing piers 4 are each connected to a lifting beam 5, and the two lifting beams 5 are connected to a supporting longitudinal beam 6; the two ends of the lower end surface of the trestles 2 to be lifted are each connected to a lifting beam 7; and the lifting assembly is arranged on the supporting longitudinal beam 6. The structural auxiliary pier 3 and the lifting load-bearing pier 4 are assembled from a plurality of steel pipe piles. The lifting beam 5, the supporting longitudinal beam 6 and the lifting beam 7 are all I-beams.
[0028] Specifically, the auxiliary pier 3 and the lifting load-bearing pier 4 are constructed by There are 12 steel pipe piles in total, three in a group, arranged on both sides of the steel trestle to form a triangle, and three parallel connections are set with steel sections to maintain stability. The steel pipe piles are constructed with a DZ90A vibrating hammer, with dual control of penetration and burial depth, and the penetration control is the main control.
[0029] Specifically, the lifting beam 5 is made of double 45 I-beams, and the top of the hanger steel pipe pile is provided with notches and brackets to ensure the stable installation of the lifting beam. The lifting beam 7 is made of double 45 I-beams, which are pre-installed on the brackets on the lifting load-bearing piers, and the supporting longitudinal beam 6 is made of double 45 I-beams, which are installed on the lifting beam 7.
[0030] Specifically, the hanger structure adopts a longitudinal hanger structure along the bridge. By setting 3m long and short cross beams on the top of the lifting support piles and arranging the lifting beams along the bridge, the problem of interference between the traditional spanning transverse hanger structure and the normal passage of the crawler crane is solved. The hanger structure is safe and stable, and the construction cost is reduced.
[0031] Specifically, the lifting assembly includes a lifting motor group 8, which is arranged at one end of the upper end surface of the supporting longitudinal beam 6, and a first pulley group 9 is arranged at the other end of the upper end surface of the supporting longitudinal beam 6. The second pulley group 10 is connected to the lifting beam 7 at one end of the lower end surface of the trestle 2 to be lifted, and the third pulley group 11 is connected to the lifting beam 7 at the other end; the lifting motor group 8 is connected to the third pulley group 11 through the first steel wire rope 12, and the lifting motor group 8 is connected to the second pulley group 10 after bypassing the first pulley group 9 through the second steel wire rope 13. The lifting motor group 8 includes a motor 81, a reducer 82, a hoisting frame 83 and a drum 84; the drum 84 is rotatably connected to the hoisting frame 83, the output end of the motor 81 is connected to the reducer 82, and the output end of the reducer 82 is connected to one end of the drum 84.
[0032] Specifically, two 30t winches are set at the lifting point of the supporting longitudinal beam 6. The two winches are controlled by the same remote control switch so that the two winches can work or stop synchronously. The design deck elevation of the steel trestle is +6.50m. When considering the design high water level +3.75m, the navigation channel clearance height meets the requirement of 4.5m, and the steel trestle deck needs to be lifted by 3.75m as a whole. The hoisting height of the winch is set to 8m, and the lifting and lowering speed is 7m / min, which can ensure that the deck of the navigation channel steel trestle can be lifted and lowered smoothly and efficiently within 1min, and the lifting height meets the channel clearance requirements. At the same time, a limit device is set to ensure the precise positioning of the bridge deck during the lifting and lowering process, so that there will be no loss of control during the lifting and lowering process, reducing the occurrence of quality and safety hazards.
[0033] Specifically, when it is necessary to lift the trestle 2 to be lifted, the lifting motor groups 8 of the two lifting components are started simultaneously through the control cabinet, and the lifting motor group 8 drives the drum 84 to reel in the first steel wire rope 12 and the second steel wire rope 13, and the first steel wire rope 12 and the second steel wire rope 13 shrink at the same time to drive the trestle 2 to be lifted to rise, ensuring smooth navigation of ships passing through the navigable waters; after the navigation is completed, the lifting motor group 8 releases the first steel wire rope 12 and the second steel wire rope 13, so that the trestle 2 to be lifted is lowered to the same height as the two fixed trestles 1, ensuring the passage of vehicles.
[0034] The lifting device of the pier at the navigation hole can lift and lower the pier 2 to be lifted at the navigation hole by arranging structural auxiliary piers 3 at both ends of the pier 2 to be lifted, arranging lifting load-bearing piers 4 on the structural auxiliary piers 3, and arranging lifting components on the supporting longitudinal beams 6, thereby solving the contradiction between the high height of the navigation hole and the excessively long and poor stability of the steel pipe piles, ensuring the smooth navigation of ships passing through the navigable waters and the normal use of the steel pier during the construction period, achieving the value of both the passage of vehicles on the steel pier and the navigation of ships under the bridge, and having advantages in terms of economy and safety.
[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A lifting device for a trestle at a navigation hole, characterized in that: It comprises two groups of lifting components and two groups of bracket components; the trestles (2) to be lifted are located between two fixed trestles (1); the front and rear sides of the trestles (2) to be lifted are each connected to a group of bracket components; the bracket components are connected to the fixed trestles (1) on both sides; the lifting components are connected to the bracket components; and the lifting components are connected to the trestles (2) to be lifted.
2. The lifting device for the trestle at the navigation hole according to claim 1 is characterized in that: The support assembly comprises two structural auxiliary piers (3), the two structural auxiliary piers (3) are respectively arranged below the two fixed trestles (1), a lifting load-bearing pier (4) is respectively arranged on the two structural auxiliary piers (3), the upper ends of the two lifting load-bearing piers (4) are respectively connected to a lifting beam (5), and a supporting longitudinal beam (6) is connected between the two lifting beams (5); the two ends of the lower end surface of the trestles (2) to be lifted are respectively connected to a lifting beam (7); and the lifting assembly is arranged on the supporting longitudinal beam (6).
3. The lifting device for the trestle at the navigation hole according to claim 2 is characterized in that: The lifting assembly comprises a lifting motor group (8), the lifting motor group (8) is arranged at one end of the upper end surface of the supporting longitudinal beam (6), the other end of the upper end surface of the supporting longitudinal beam (6) is provided with a first pulley group (9), the lifting beam (7) at one end of the lower end surface of the trestle (2) to be lifted is connected to the second pulley group (10), and the lifting beam (7) at the other end is connected to the third pulley group (11); the lifting motor group (8) is connected to the third pulley group (11) through a first steel wire rope (12), and the lifting motor group (8) is connected to the second pulley group (10) after bypassing the first pulley group (9) through a second steel wire rope (13).
4. The lifting device for the trestle at the navigation hole according to claim 3 is characterized in that: The lifting motor group (8) comprises an electric motor (81), a speed reducer (82), a hoisting frame (83) and a drum (84); the drum (84) is rotatably connected to the hoisting frame (83), the output end of the electric motor (81) is connected to the speed reducer (82), and the output end of the speed reducer (82) is connected to one end of the drum (84).
5. The lifting device for the trestle at the navigation hole according to claim 1 is characterized in that: The front and rear sides of the fixed trestle (1) and the trestle to be lifted (2) are both provided with fences (14).
6. The lifting device for the trestle at the navigation hole according to claim 2 is characterized in that: The structural auxiliary pier (3) and the hoisting load-bearing pier (4) are assembled from a plurality of steel pipe piles.
7. The lifting device for the trestle at the navigation hole according to claim 2, characterized in that: The lifting beam (5), the supporting longitudinal beam (6) and the lifting beam (7) are all I-beams.
8. The lifting device for the trestle at the navigation hole according to claim 1, characterized in that: The upper end surfaces of the fixed trestle (1) and the trestle to be lifted (2) are both provided with patterned steel plates.