Roller supporting leg anchoring anti-toppling device

Abstract

The invention discloses an anti-toppling device for roller supporting leg anchoring. The anti-toppling device comprises a roller supporting leg, an anchoring assembly, a guide beam and a pier. The lower ends of the roller supporting legs are supported on the bridge piers, and rollers at the upper ends support the bottom surface of the guide beam; the anchoring assembly comprises a front-end pull rod, a rear-end pull rod, a cross beam and a longitudinal connection fine deformed steel bar; the front-end pull rod and the rear-end pull rod are respectively and obliquely arranged; the upper ends of the front-end pull rod and the rear-end pull rod are respectively connected with the middle upper parts of the roller supporting legs; the lower end of the front-end pull rod extends to the front end of the pier; the lower end of the rear end pull rod extends to the rear side of the bridge pier; cross beams are arranged on the outer sides of the lower ends of the front-end pull rod and the rear-end pull rod respectively, and the front-end pull rod and the rear-end pull rod are connected with the corresponding cross beams respectively. Stable support can be provided for the roller supporting leg, and the stability of the overall structure of the roller supporting leg is remarkably enhanced; and meanwhile, the bridge pier structure is not damaged by drilling, and disposable refined deformed steel bars are not implanted, so that the construction cost is remarkably saved.

Description

Technical Field

[0001] The invention relates to the technical field of high-speed railway bridge construction, and in particular to a roller leg anchoring anti-dumping device. Background Art

[0002] During the construction of bridges, the construction of bridges is usually completed by the cooperation of transport and erection machines, guide beams and roller support legs. When the bridge erection machine is performing the beam erection operation, the roller support legs installed under the guide beam play a supporting role. At present, the common anchoring method is to use the method of pre-embedded anchoring fine threaded steel bars on the top of the pier. This construction method requires that during the construction of the bridge pier, the relevant construction personnel should carefully review the position and size of the pre-embedded reinforcement of the pier to ensure that the anchor connector of the support leg can be accurately connected with the pre-embedded anchor on the top of the pier. After the cast-in-place bridge pier concrete reaches the established design strength, it is necessary to carry out pull-out resistance testing on the embedded reinforcement to ensure that the pull-out resistance of the embedded reinforcement can meet the design requirements. However, the above construction method has certain limitations. When the construction personnel erect each new pier, they need to drill holes in the pier to embed the reinforcement. When moving the roller support legs from one pier to another, the roller support legs need to be frequently connected and removed from the embedded steel bars, which not only damages the structure of the pier but also prolongs the construction period and increases the cost. Summary of the invention

[0003] In view of the above shortcomings, the present invention provides a roller support leg anchoring anti-dumping device, which can provide a stable support for the roller support leg and significantly enhance the stability of the overall structure of the roller support leg; at the same time, compared with the anchoring device used in the prior art, it does not drill holes to damage the pier structure, and does not implant disposable fine threaded steel bars, which significantly saves construction costs. The specific technical solution is as follows:

[0004] A roller support leg anchoring anti-dumping device, comprising a roller support leg, an anchoring assembly, a guide beam and a bridge pier;

[0005] The guide beam is installed horizontally; the lower end of the roller support leg is supported on the bridge pier, and the upper roller supports the bottom surface of the guide beam; the anchor assembly includes a front end tie rod, a rear end tie rod, a crossbeam and a longitudinal connection fine threaded steel bar;

[0006] The front-end tie rod and the rear-end tie rod are arranged obliquely respectively; the upper ends of the front-end tie rod and the rear-end tie rod are respectively connected to the middle and upper parts of the roller support legs; the lower end of the front-end tie rod extends to the front end of the pier; the lower end of the rear-end tie rod extends to the rear side of the pier; cross beams are respectively arranged on the outer sides of the lower ends of the front-end tie rod and the rear-end tie rod, and the front-end tie rod and the rear-end tie rod are respectively connected to the corresponding cross beams; one end of the longitudinal connecting fine threaded steel bar is connected to the cross beam located on the outer side of the lower end of the front-end tie rod, and the other end is connected to the cross beam located on the outer side of the lower end of the rear-end tie rod.

[0007] Preferably, it also includes a fixed leg; the roller support leg includes a front roller support leg, a middle roller support leg and a rear roller support leg; a fixed leg is installed below the rear end of the guide beam; the lower end of the fixed leg is connected to the pier, and the upper end is connected to the guide beam; the front roller support leg and the middle roller support leg are arranged on the pier below the front end of the guide beam, and the rear roller support leg is arranged on the pier below the middle part of the guide beam; the front roller support leg is arranged at the front end of the middle roller support leg.

[0008] Preferably, the front roller support leg is installed with an anchor assembly; and the rear roller support leg is installed with an anchor assembly.

[0009] Preferably, it also includes an auxiliary lifting component; the auxiliary lifting component is installed below the roller support leg; the auxiliary lifting component is respectively connected to the cross beam on the outer side of the lower end of the front end pull rod and the cross beam on the outer side of the lower end of the rear end pull rod.

[0010] Preferably, the auxiliary lifting assembly includes a hydraulic cylinder and a longitudinal connecting rod; one end of the hydraulic cylinder is hinged to one end of the longitudinal connecting rod; the other end of the hydraulic cylinder is connected to the middle part of the cross beam outside the lower end of the rear end pull rod; the other end of the longitudinal connecting rod is connected to the middle part of the cross beam outside the lower end of the front end pull rod.

[0011] Preferably, the cross beam is horizontally arranged, with one side against the outer side of the upper end of the pier; the side of the cross beam against the outer side of the upper end of the pier is inclined, and the side away from the pier is vertically arranged.

[0012] Preferably, it also includes a cylinder connecting beam; the middle part of the cylinder connecting beam is connected to the longitudinal connecting rod, and the two ends are respectively connected to a longitudinal connecting fine-rolled threaded steel bar.

[0013] Preferably, the front end pull rod and the rear end pull rod are connected to the roller support legs and the cross beam in an articulated manner.

[0014] Preferably, the height at which the upper ends of the front end pull rod and the rear end pull rod of the anchor assembly installed in the middle of the guide beam are connected to the roller support leg is higher than the height at which the upper ends of the front end pull rod and the rear end pull rod of the anchor assembly installed at the front end of the guide beam are connected to the roller support leg.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides a stable support for the roller support rod by arranging a front-end tie rod, a rear-end tie rod and longitudinally connected fine threaded steel bars, which significantly enhances the stability of the overall structure; it also provides an auxiliary lifting assembly to assist construction personnel in removing and installing the anchor assembly, which greatly improves the convenience and efficiency of the construction operation. At the same time, compared with the anchoring device used in the prior art, it does not drill holes to damage the pier structure, and does not implant disposable fine threaded steel bars, which significantly saves construction costs. In addition, the present invention also arranges multiple groups of anchoring assemblies under the guide beam, and sets the connection height of the anchoring device according to the position of the roller support leg. It can reasonably distribute the supporting force of the anchoring assembly according to the stress conditions of the guide beam at different positions, so that the force distribution of the guide beam is uniform and reasonable, and the stress state of each roller support leg is further optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the connection between the roller support leg and the anchor assembly of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the auxiliary lifting assembly of the present invention;

[0021] Figure 4 It is a schematic structural diagram of the crossbeam of the present invention.

[0022] 1-front roller support leg, 2-middle roller support leg, 3-rear roller support leg, 4-anchor assembly, 5-bridge pier, 6-guide beam, 7-support leg, 8-front end tie rod, 9-rear end tie rod, 10-cross beam, 11-longitudinal connecting rebar, 12-cylinder connecting beam, 13-hydraulic cylinder, 14-longitudinal connecting rod. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] Example 1

[0028] A roller support leg anchoring anti-dumping device as shown in the figure includes a roller support leg, an anchoring assembly, a guide beam and a bridge pier;

[0029] The guide beam is installed horizontally; the lower end of the roller support leg is supported on the bridge pier, and the upper roller supports the bottom surface of the guide beam; the anchor assembly includes a front end tie rod, a rear end tie rod, a crossbeam and a longitudinal connection fine threaded steel bar;

[0030] The front-end tie rod and the rear-end tie rod are arranged obliquely respectively; the upper ends of the front-end tie rod and the rear-end tie rod are respectively connected to the middle and upper parts of the roller support legs; the lower end of the front-end tie rod extends to the front end of the pier; the lower end of the rear-end tie rod extends to the rear side of the pier; cross beams are respectively arranged on the outer sides of the lower ends of the front-end tie rod and the rear-end tie rod, and the front-end tie rod and the rear-end tie rod are respectively connected to the corresponding cross beams; one end of the longitudinal connecting fine threaded steel bar is connected to the cross beam located on the outer side of the lower end of the front-end tie rod, and the other end is connected to the cross beam located on the outer side of the lower end of the rear-end tie rod.

[0031] The working principle of this embodiment:

[0032] The roller support leg plays a supporting role; the anchor assembly is used to fix the roller support leg; the front end tie rod, the rear end tie rod and the longitudinal connecting threaded steel are connected to form a triangle to provide a tightening force for the roller support leg; the longitudinal connecting threaded steel is connected to the crossbeam by bolt connection; a group of front end tie rods and rear end tie rods are respectively arranged on the left and right sides of the roller support leg, and the crossbeam connects the front end tie rods and the rear end tie rods on the left and right sides of the roller support leg together to form a whole.

[0033] Example 2

[0034] This embodiment differs from Embodiment 1 in that it further includes a fixed leg; the roller support legs include a front roller support leg, a middle roller support leg and a rear roller support leg; a fixed leg is installed below the rear end of the guide beam; the lower end of the fixed leg is connected to the bridge pier, and the upper end is connected to the guide beam; the front roller support leg and the middle roller support leg are arranged on the bridge pier below the front end of the guide beam, and the rear roller support leg is arranged on the bridge pier below the middle part of the guide beam; the front roller support leg is arranged at the front end of the middle roller support leg.

[0035] The fixed support leg is arranged at the rear end of the guide beam to play a supporting role. By arranging the front roller support leg and the middle roller support leg at the pier below the front end of the guide beam, the two roller support legs can disperse the weight of the guide beam and improve the overall bearing capacity; the rear roller support leg is arranged in the middle of the guide beam, and cooperates with the front roller support leg and the middle roller support leg to bear the weight and move the guide beam.

[0036] The working principle of this embodiment is the same as that of Embodiment 1.

[0037] Example 3

[0038] The difference between this embodiment and embodiment 2 is that the front roller support leg is equipped with an anchor assembly; the rear roller support leg is equipped with an anchor assembly. By installing the anchor assembly on the front roller support leg and the anchor assembly on the rear roller support leg, the two sets of anchor assemblies cooperate with each other to further enhance the anti-dumping ability of the roller support leg.

[0039] The working principle of this embodiment is the same as that of Embodiment 1.

[0040] Example 4

[0041] This embodiment differs from Embodiment 3 in that it further includes an auxiliary lifting assembly; the auxiliary lifting assembly is installed below the roller support leg; the auxiliary lifting assembly is respectively connected to the cross beam on the outer side of the lower end of the front end pull rod and the cross beam on the outer side of the lower end of the rear end pull rod.

[0042] The working principle of this embodiment is the same as that of Embodiment 1.

[0043] Example 5

[0044] The difference between this embodiment and embodiment 4 is that the auxiliary lifting assembly includes a hydraulic cylinder and a longitudinal connecting rod; one end of the hydraulic cylinder is hinged to one end of the longitudinal connecting rod; the other end of the hydraulic cylinder is connected to the middle of the crossbeam outside the lower end of the rear end tie rod; the other end of the longitudinal connecting rod is connected to the middle of the crossbeam outside the lower end of the front end tie rod. The longitudinal connecting rod is used to prevent the device from bending and deforming during transportation, and can also be used as an auxiliary lifting lifting point. When removing the anchor assembly, the longitudinal connecting rod is connected with a sling, and then the hydraulic rod is retracted, and the crossbeams on both sides of the pier are lifted with the longitudinal support rod as the lifting point, and the anchor assembly releases the fixing effect on the roller support leg.

[0045] The working principle of this embodiment is the same as that of Embodiment 1.

[0046] Example 6

[0047] The difference between this embodiment and embodiment 5 is that the cross beam is arranged horizontally, with one side against the outer side of the upper end of the pier; the side of the cross beam against the outer side of the upper end of the pier is arranged obliquely, and the side away from the pier is arranged vertically. An anti-friction plate is arranged between the side of the cross beam against the outer side of the upper end of the pier and the pier. The anti-friction can be made of friction-resistant polyethylene material. The anti-friction plate is used to prevent the cross beam from rubbing against the pier during use and causing wear. The side of the cross beam against the outer side of the upper end of the pier is arranged obliquely, which can better fit the shape of the pier, increase the contact area, improve the friction and support stability, enhance the connection stability between the fixing plate and the pier, and improve the anti-dumping ability of the overall device.

[0048] The working principle of this embodiment is the same as that of Embodiment 1.

[0049] Example 7

[0050] This embodiment differs from Embodiment 6 in that it further comprises a cylinder connecting beam; the middle of the cylinder connecting beam is connected to the longitudinal connecting rod, and the two ends are respectively connected to a longitudinal connecting fine-rolled threaded steel bar. The cylinder connecting beam connects the longitudinal connecting rod and the longitudinal connecting fine-rolled threaded steel bar to form a more stable overall structure, which jointly bears external forces, enhances the synergy between the various components, and improves the overall stability of the device.

[0051] The working principle of this embodiment is the same as that of Embodiment 1.

[0052] Example 8

[0053] The difference between this embodiment and embodiment 7 is that the front and rear tie rods are connected to the roller support legs and the cross beam in an articulated manner. The front and rear tie rods are connected to the roller support legs and the cross beam in an articulated manner, which facilitates the connection and removal of the front and rear tie rods and the roller support legs, and makes the cross beam fit more closely with both sides of the pier.

[0054] The working principle of this embodiment is the same as that of Embodiment 1.

[0055] Example 9

[0056] The difference between this embodiment and embodiment 8 is that the height at which the upper ends of the front and rear pull rods of the anchor assembly installed in the middle of the guide beam are connected to the roller support legs is higher than the height at which the upper ends of the front and rear pull rods of the anchor assembly installed at the front end of the guide beam are connected to the roller support legs. The height at which the upper ends of the front and rear pull rods of the anchor assembly installed in the middle of the guide beam are connected to the roller support legs is higher than the height at which the upper ends of the front and rear pull rods of the anchor assembly installed at the front end of the guide beam are connected to the roller support legs. This connection method with different heights can reasonably distribute the supporting force of the anchor assembly according to the force characteristics of the guide beam at different positions, making the force on the guide beam more uniform and reasonable, thereby optimizing the force distribution of each roller support leg and improving the bearing capacity and stability of the roller support leg.

[0057] The working principle of this embodiment is the same as that of Embodiment 1.

[0058] In summary, the present invention provides a stable support for the roller support rod by arranging a front-end tie rod, a rear-end tie rod and longitudinally connected fine threaded steel bars, which significantly enhances the stability of the overall structure; it also provides an auxiliary lifting assembly to assist construction personnel in removing and installing the anchor assembly, which greatly improves the convenience and efficiency of the construction operation. At the same time, compared with the anchoring device used in the prior art, it does not drill holes to damage the pier structure, and does not implant disposable fine threaded steel bars, which significantly saves construction costs. In addition, the present invention also arranges multiple groups of anchoring assemblies under the guide beam, and sets the connection height of the anchoring device according to the position of the roller support leg. It can reasonably distribute the supporting force of the anchoring assembly according to the stress conditions of the guide beam at different positions, so that the force distribution of the guide beam is uniform and reasonable, and the stress state of each roller support leg is further optimized.

[0059] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A roller leg anchor anti-dumping device, characterized in that: It includes roller support legs, anchoring assemblies, guide beams and piers; The guide beam is installed horizontally; the lower end of the roller support leg is supported on the bridge pier, and the upper roller supports the bottom surface of the guide beam; the anchor assembly includes a front end tie rod, a rear end tie rod, a crossbeam and a longitudinal connection fine threaded steel bar; The front-end tie rod and the rear-end tie rod are arranged obliquely respectively; the upper ends of the front-end tie rod and the rear-end tie rod are respectively connected to the middle and upper parts of the roller support legs; the lower end of the front-end tie rod extends to the front end of the pier; the lower end of the rear-end tie rod extends to the rear side of the pier; cross beams are respectively arranged on the outer sides of the lower ends of the front-end tie rod and the rear-end tie rod, and the front-end tie rod and the rear-end tie rod are respectively connected to the corresponding cross beams; one end of the longitudinal connecting fine threaded steel bar is connected to the cross beam located on the outer side of the lower end of the front-end tie rod, and the other end is connected to the cross beam located on the outer side of the lower end of the rear-end tie rod.

2. The roller leg anchoring anti-dumping device according to claim 1, characterized in that: It also includes fixed legs; the roller support legs include front roller support legs, middle roller support legs and rear roller support legs; the fixed legs are installed below the rear end of the guide beam; the lower end of the fixed legs is connected to the bridge pier, and the upper end is connected to the guide beam; the front roller support legs and the middle roller support legs are arranged on the bridge pier below the front end of the guide beam, and the rear roller support legs are arranged on the bridge pier below the middle part of the guide beam; the front roller support legs are arranged at the front end of the middle roller support legs.

3. The roller leg anchor anti-dumping device according to claim 3, characterized in that: The front roller support leg is installed with an anchor assembly; the rear roller support leg is installed with an anchor assembly.

4. The roller leg anchoring anti-dumping device according to claim 1, characterized in that: It also includes an auxiliary lifting component; the auxiliary lifting component is installed below the roller support leg; the auxiliary lifting component is respectively connected to the cross beam outside the lower end of the front end pull rod and the cross beam outside the lower end of the rear end pull rod.

5. The roller leg anchoring anti-dumping device according to claim 2, characterized in that: The auxiliary lifting assembly includes a hydraulic cylinder and a longitudinal connecting rod; one end of the hydraulic cylinder is hinged to one end of the longitudinal connecting rod; the other end of the hydraulic cylinder is connected to the middle part of the cross beam outside the lower end of the rear end pull rod; the other end of the longitudinal connecting rod is connected to the middle part of the cross beam outside the lower end of the front end pull rod.

6. The roller leg anchoring anti-dumping device according to claim 1, characterized in that: The cross beam is arranged horizontally, with one side leaning against the outer side of the upper end of the pier; the side of the cross beam leaning against the outer side of the upper end of the pier is arranged obliquely, and the side away from the pier is arranged vertically.

7. The roller leg anchoring anti-dumping device according to claim 3, characterized in that: It also includes an oil cylinder connecting beam; the middle part of the oil cylinder connecting beam is connected to the longitudinal connecting rod, and the two ends are respectively connected to a longitudinal connecting fine-rolled threaded steel bar.

8. The roller leg anchoring anti-dumping device according to claim 1, characterized in that: The front end pull rod and the rear end pull rod are connected to the roller support legs and the cross beam in an articulated manner.

9. The roller leg anchoring anti-dumping device according to claim 3, characterized in that: The height at which the upper ends of the front and rear pull rods of the anchor assembly installed in the middle of the guide beam are connected to the roller support legs is higher than the height at which the upper ends of the front and rear pull rods of the anchor assembly installed at the front end of the guide beam are connected to the roller support legs.

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