Anti-inclination auxiliary device for a bridge girder erection machine

Abstract

The application discloses a kind of bridge girder erection machine anti-inclination auxiliary devices, comprising: front support frame is set on front end cantilever;Triangular support frame is rotationally arranged on front support frame;Bottom support component includes: a pair of T-shaped support plate, opposite card is set on pier;A pair of opposite pull tight plate, tension is fixed on a pair of T-shaped support plate;A pair of lifting drive mechanism is arranged on T-shaped support plate, and lifting end is provided with horizontal support table;When front support leg is subjected to rotation greater than preset radian, front support frame is abutted on horizontal support table;When triangular support frame is subjected to greater than preset swing radian, its one side bottom is abutted on horizontal support table.The application has the beneficial effects of preventing bridge girder erection machine from tilting and rolling over.

Description

Technical Field

[0001] This invention relates to the field of bridge erecting machine technology. More specifically, this invention relates to an anti-tilting auxiliary device for a bridge erecting machine. Background Technology

[0002] Bridge erecting machines are used to place prefabricated bridge beams onto prefabricated piers, achieving rapid bridge construction. During bridge erection, these machines often need to erect entire spans of the bridge. They bear significant supporting forces when erecting beams and crossing piers. For example, when lifting beams, the weight can sway, and the trolley wheels can easily derail, causing the bridge erecting machine to overturn. Figure 1 As shown, during cross-span operations, the front outrigger is a flexible support. When the main beam moves forward, the front outrigger is prone to instability, causing it to slide back and forth and topple over. Furthermore, when the main beam tilts as it moves forward, it generates diagonal tension, leading to overload and potentially causing a rollover accident. Therefore, this invention focuses on researching and predicting tilting in advance to prevent it, in order to solve the aforementioned problems in the prior art. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages that will be described later.

[0004] To achieve these objectives and other advantages according to the present invention, a bridge erecting machine anti-tilt auxiliary device is provided, comprising:

[0005] The front support frame is mounted on the front cantilever of the front outrigger of the bridge erecting machine;

[0006] A triangular support frame, the top center of which is rotatably mounted on the front side wall of the front support frame;

[0007] The bottom support components include:

[0008] A pair of T-shaped support plates are detachably and oppositely locked onto the pier below the front outrigger, and are located on both sides in front of the front outrigger.

[0009] A pair of tensioning plates, each pair of tensioning plates having its ends detachably tensioned and fixed to a pair of T-shaped support plates, with the pair of tensioning plates arranged opposite to each other;

[0010] A pair of lifting drive mechanisms are respectively positioned opposite each other on top of a pair of T-shaped support plates, and

[0011] The lifting ends of a pair of lifting drive mechanisms are inclined toward the front support frame, and a horizontal support platform is provided on the top of the lifting ends;

[0012] When the front support leg is supported on the pier, the bottom of the front support frame and the two ends of the bottom of the triangular support frame are located directly above the horizontal support platform at a preset distance.

[0013] When the front support leg is subjected to a rotation greater than a preset arc, the bottom of the front support frame abuts against the horizontal support platform;

[0014] When the triangular support is subjected to a swing radius greater than the preset value, the bottom of the corresponding side of the triangular support abuts against the horizontal support platform.

[0015] Preferably, a fixed shaft is provided on the front support frame, a bearing is coaxially sleeved on the fixed shaft, and a shaft hole is provided on the triangular support frame, the shaft hole being coaxially fixed to the outer wall of the bearing;

[0016] It also includes anti-sway components, which include:

[0017] A pair of arc-shaped pressure bars are coaxially and oppositely disposed on the outer side wall of the bearing;

[0018] An arc-shaped guide sleeve is coaxially mounted on the fixed shaft and located between a pair of arc-shaped pressure rods. One end of the pair of arc-shaped pressure rods extends into the arc-shaped guide sleeve, and a partition is provided at the center of the arc-shaped guide sleeve.

[0019] A pair of anti-sway springs, with one end of each anti-sway spring located on both sides of the partition and the other end respectively provided with a baffle.

[0020] Preferably, pressure sensors are provided on both sides of the partition, and the pressure sensors are used to detect the pressure borne by the anti-sway spring. The pressure sensors are connected to the control room of the bridge erecting machine.

[0021] Preferably, the arc-shaped pressure bar is equipped with an angle sensor, which is used to detect the rotational deviation angle of the arc-shaped pressure bar, and the angle sensor is connected to the control room of the bridge erecting machine.

[0022] Preferably, the T-shaped support plate includes a horizontal support plate and a vertical pressing plate. One end of the vertical pressing plate is provided with a first ear plate, and the other end is provided with a slide rail along its length. A pair of limiting grooves are provided opposite each other on the side wall of the slide rail along its sliding direction. A second ear plate is slidably provided in the slide rail. A pair of limiting protrusions are provided opposite each other on the side wall of the second ear plate. The pair of limiting protrusions are slidably engaged in the pair of limiting grooves. Multiple through holes are provided on the end of the second ear plate located outside the slide rail and on the first ear plate.

[0023] The tensioning plate has screws at both ends, and the two ends of the screws pass through the through holes on the same side of a pair of T-shaped support plates and are fixed by locking nuts.

[0024] Preferably, the bottom of the transverse support plate, the side of the vertical pressure plate facing the pier sidewall, and the side of the tie plate facing the pier sidewall are all covered with an anti-slip layer.

[0025] Preferably, the top of the horizontal support platform is provided with a central sinking groove corresponding to the bottom of the front support frame and a side sinking groove corresponding to the two bottom ends of the triangular support frame.

[0026] The present invention has at least the following beneficial effects:

[0027] First, when the bridge erecting machine performs longitudinal movement of the precast bridge box girder, because the front outrigger is a flexible connection, under the action of inertia, the front outrigger rotates relative to the front cantilever. When this rotation is within the safe range (the front outrigger is supported stably), although the bottom of the front support frame will move towards the horizontal support platform, it will not abut against the horizontal support platform and will not affect the flexible support function of the front outrigger. When this rotation exceeds the safe range (the front outrigger will become unstable), the bottom of the front support frame abuts against the horizontal support platform to prevent the front outrigger from continuing to rotate and to provide support force, thereby preventing the bridge erecting machine from tilting forward and eliminating the risk of the bridge erecting machine tipping over.

[0028] Secondly, when the bridge erecting machine is longitudinally moving the precast bridge box girder, if the forces on both sides are uneven as they move forward, or if other external forces cause the bridge erecting machine to have the potential energy to tilt to one side, the weight of the triangular support frame is much smaller than the weight of the bridge erecting machine, and it is rotatably connected to the front outrigger. Therefore, under the same potential energy, the triangular support frame will rotate first, thus quickly responding to the possibility of the bridge erecting machine tilting to the left or right.

[0029] Third, when the bridge erecting machine is subjected to uneven force on both sides as it moves forward, or when other external forces cause the potential energy of the bridge erecting machine to tilt to the left or right to reach the preset value, the bottom of the triangular support corresponding to the side that may tilt can abut against the horizontal support platform, thereby providing anti-tilting support force, preventing the bridge erecting machine from tilting and eliminating the risk of the bridge erecting machine tipping over.

[0030] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0031] Figure 1 This is a front view schematic diagram of an existing bridge erecting machine with its front outriggers supported on a bridge pier.

[0032] Figure 2 This is a front view schematic diagram of an anti-tilt assist device according to one of the technical solutions of the present invention;

[0033] Figure 3This is a side view schematic diagram of an anti-tilt assist device according to one of the technical solutions of the present invention;

[0034] Figure 4 This is a detailed view of the T-shaped support plate according to one of the technical solutions of the present invention;

[0035] Figure 5 This is a radial cross-sectional schematic diagram of the anti-sway component according to one of the technical solutions of the present invention;

[0036] Figure 6 This is a top view schematic diagram of the anti-sway component according to one of the technical solutions of the present invention.

[0037] Explanation of reference numerals in the attached drawings: 1. Front outrigger; 2. Front cantilever; 3. Pier; 100. Front support frame; 11. Fixed shaft; 12. Bearing; 200. Triangular support frame; 300. Bottom support assembly; 31. T-shaped support plate; 32. Pull-out tensioning plate; 33. Lifting drive mechanism; 34. Horizontal support platform; 35. First ear plate; 36. Limiting groove; 37. Second ear plate; 38. Limiting protrusion; 39. Locking nut; 400. Anti-sway assembly; 41. Arc-shaped pressure bar; 42. Arc-shaped guide sleeve; 43. Partition plate; 44. Anti-sway spring; 45. Baffle plate; 46. Arc-shaped pressure bar fixing frame; 47. Arc-shaped guide sleeve fixing frame. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0039] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this invention, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0040] like Figures 2-6 As shown, the present invention provides an anti-tilting auxiliary device for a bridge erecting machine, comprising:

[0041] The front support frame is located on the front cantilever 2 of the front outrigger 1 of the bridge erecting machine. Specifically, the front support frame can be formed into a cuboid shape by welding or bolting I-beams or channel steels, with the bottom formed by welding or bolting steel plates.

[0042] A triangular support 200 is rotatably mounted at its top center on the front side wall of the front support frame. Specifically, the triangular support 200 can be formed by welding or bolting together the same I-beams or channel steel as the front support frame. The triangular support 200 can be configured with a transverse steel frame at the top, with transverse steel plates welded or bolted to it. Inclined steel frames are symmetrically welded or bolted to both sides of the transverse steel frame, and steel plates are welded or bolted to the bottom of each inclined steel frame. Shaft holes are provided on the two transverse steel plates, and a fixed shaft 11 is welded or bolted to the front support frame. The shaft holes and the fixed shaft 11 are connected via bearings 12, thus achieving a rotatable connection between the triangular support 200 and the front support frame.

[0043] Bottom support component 300, which includes:

[0044] A pair of T-shaped support plates 31 are detachably and relatively locked onto the pier below the front support leg 1, and are located on both sides in front of the front support leg 1; the side of the T-shaped support plate 31 abuts against the side wall of the pier, and the lower surface of the top abuts against the top surface of the pier, so that the pair of T-shaped support plates 31 can be erected on the pier.

[0045] A pair of tensioning plates 32 are provided, with both ends of each pair of tensioning plates 32 being detachably tensioned and fixed to a pair of T-shaped support plates 31. The pair of tensioning plates 32 are arranged opposite to each other. The tensioning plates 32 can, firstly, tighten the pair of T-shaped support plates 31 against the side wall of the pier; secondly, they can connect and combine the pair of T-shaped support plates 31 together to form a "seesaw" force relationship centered on the pier, thereby improving the support stability of the T-shaped support plates 31.

[0046] A pair of lifting drive mechanisms 33 are respectively arranged opposite to each other on the top of a pair of T-shaped support plates 31, and the lifting ends of the pair of lifting drive mechanisms 33 are inclined towards the front support frame. A horizontal support platform 34 is provided on the top of the lifting end. The lifting drive mechanism 33 can be a hydraulic cylinder. After the installation of the T-shaped support plate 31 is completed, the lifting drive mechanism 33 is fixedly installed on the T-shaped support plate 31 by bolt connection and is located at the bottom with the bridge pier support. The lifting drive mechanism 33 can drive the horizontal support platform 34 to move up and down, thereby forming an initial distance with the front support frame and the triangular support frame 200. The initial distance is set according to the actual weight and size of the precast bridge box girder erected by the bridge erecting machine.

[0047] When the front support leg 1 is supported on the pier, the bottom of the front support frame and the two ends of the bottom of the triangular support frame 200 are located directly above the horizontal support platform 34 at a preset distance. When the bridge erecting machine performs longitudinal movement of the precast bridge box girder, since the front support leg 1 is a flexible connection, under the action of inertia, the front support leg 1 rotates relative to the front cantilever 2. When this rotation is within the safe range (the front support leg 1 is supported stably), although the bottom of the front support frame will move toward the horizontal support platform 34, it will not abut against the horizontal support platform 34 and will not affect the flexible support function of the front support leg 1. Similarly, when the bridge erecting machine is performing longitudinal movement of the precast bridge box girder, if the forces on both sides are uneven as they move forward, or if other external forces cause the bridge erecting machine to have the potential energy to tilt to one side, the weight of the triangular support 200 is much smaller than that of the bridge erecting machine, and it is rotatably connected to the front support leg 1. Therefore, under the same potential energy, the triangular support 200 will rotate first, thus quickly responding to the possibility of the bridge erecting machine tilting to the left or right.

[0048] When the front outrigger 1 is subjected to a rotation greater than a preset arc, the bottom of the front support frame abuts against the horizontal support platform 34; when this rotation exceeds the safe range (the support of the front outrigger 1 will become unstable), the bottom of the front support frame abuts against the horizontal support platform 34 to prevent the front outrigger 1 from continuing to rotate and to provide support force, thereby preventing the bridge erecting machine from tilting forward and eliminating the risk of the bridge erecting machine tipping over.

[0049] When the triangular support 200 is subjected to a swing radius greater than a preset value, the bottom of the corresponding side of the triangular support 200 abuts against the horizontal support platform 34. Similarly, when the bridge erecting machine is subjected to uneven forces on both sides as it moves forward, or when other external forces cause the potential energy for the bridge erecting machine to tilt to the left or right to reach a preset value (in this scheme, the swing radius is used for feedback), the bottom of the side of the triangular support 200 that may tilt can abut against the horizontal support platform 34, thereby providing anti-tilting support force, preventing the bridge erecting machine from tilting, and eliminating the risk of the bridge erecting machine tipping over.

[0050] In the above technical solution, when the bridge erecting machine is performing longitudinal movement of the precast bridge box girder, or performing other operations, which may cause the flexible support of the front outrigger 1 of the bridge erecting machine to become unstable, the front support frame can promptly support itself on the horizontal support platform 34 to prevent the front outrigger 1 from continuing to rotate and provide support force, thereby preventing the bridge erecting machine from tilting forward and eliminating the risk of the bridge erecting machine tipping over. Furthermore, when the bridge erecting machine is performing longitudinal movement of the precast bridge box girder, or performing other operations or under external force factors, which may cause the bridge erecting machine to tilt to the left or right, the triangular support frame 200 can preemptively abut against the horizontal support platform 34, thereby providing anti-tilting support force, preventing the bridge erecting machine from tilting and eliminating the risk of the bridge erecting machine tipping over.

[0051] In another technical solution, a fixed shaft 11 is provided on the front support frame, and a bearing 12 is coaxially sleeved on the fixed shaft 11. The triangular support frame 200 is provided with a shaft hole, and the shaft hole is coaxially fixed to the outer side wall of the bearing 12; thereby enabling the front support frame and the triangular support frame 200 to achieve a rotatable connection.

[0052] It also includes anti-sway component 400, which includes:

[0053] A pair of arc-shaped pressure rods 41 are coaxially and oppositely arranged on the outer wall of the bearing 12; specifically, the pair of arc-shaped pressure rods 41 are arranged radially symmetrically along the vertical direction of the bearing 12; the arc-shaped pressure rods 41 can be fixed to the outer wall of the bearing 12 by the arc-shaped pressure rod fixing bracket 46.

[0054] An arc-shaped guide sleeve 42 is coaxially mounted on the fixed shaft 11 and located between a pair of arc-shaped pressure rods 41. The opposing ends of the pair of arc-shaped pressure rods 41 extend into the arc-shaped guide sleeve 42. A partition 43 is provided at the center of the arc-shaped guide sleeve 42. Specifically, the arc-shaped guide sleeve 42 is axially symmetrically arranged, and when the force on the pair of arc-shaped pressure rods 41 is balanced, the lengths of the pair of arc-shaped pressure rods 41 extending into the arc-shaped guide sleeve 42 are the same. The arc-shaped guide sleeve 42 can be fixed to the fixed shaft 11 by an arc-shaped guide sleeve fixing bracket 47.

[0055] A pair of anti-sway springs 44 are provided, with one end of each spring located on both sides of the partition 43 and the other end respectively provided with a baffle 45. Specifically, arc-shaped grooves can be correspondingly formed on the inner sidewall of the arc-shaped guide sleeve 42, and protrusions can be correspondingly formed on the upper and lower sides of the baffle 45. The protrusions slide and engage in the arc-shaped grooves, so that when the baffle 45 is pressed by the arc-shaped pressure rod 41, it is forced to move along the arc-shaped groove toward the partition 43.

[0056] In the above technical solution, during the process of the front outrigger 1 moving forward from its original position to the next pier, the triangular support 200 and the front support frame are rotatably connected and connected by bearing 12, making it very prone to swaying and posing a safety hazard. In the above technical solution, an anti-sway component 400 is provided. When the triangular support 200 needs to rotate, it needs to overcome the compressive deformation force of the anti-sway spring 44, thus making the triangular support 200 less prone to rotation. The anti-sway compressive deformation force of the anti-sway spring 44 is set according to the load of the bridge erecting machine. It needs to meet the anti-sway requirement when the front outrigger 1 moves alone, and simultaneously ensure that the front outrigger 1, after being supported on the pier, can undergo effective deformation under the potential energy of the bridge erecting machine tilting left and right.

[0057] In another technical solution, pressure sensors are provided on both sides of the partition 43. These pressure sensors detect the pressure exerted on the anti-sway spring 44 and are connected to the control room of the bridge erecting machine. This allows for timely feedback to the operator on the current forward tilting trend, assisting the operator in controlling the movement speed of the precast bridge box girder.

[0058] In another technical solution, an angle sensor is provided on the arc-shaped pressure bar 41. The angle sensor is used to detect the rotational deviation angle of the arc-shaped pressure bar 41, and the angle sensor is connected to the control room of the bridge erecting machine. This allows for timely feedback to the operator on the current left and right tilting trend, assisting the operator in controlling the moving speed of the precast bridge box girder.

[0059] In another technical solution, the T-shaped support plate 31 includes a horizontal support plate and a vertical pressing plate. One end of the vertical pressing plate is provided with a first ear plate 35, and the other end is provided with a slide rail along its length. A pair of limiting grooves 36 are provided opposite to each other on the side wall of the slide rail along its sliding direction. A second ear plate 37 is slidably provided in the slide rail. A pair of limiting protrusions 38 are provided opposite to each other on the side wall of the second ear plate 37. The pair of limiting protrusions 38 are slidably locked in the pair of limiting grooves 36. Multiple through holes are provided on the end of the second ear plate 37 located outside the slide rail and on the first ear plate 35.

[0060] The tensioning plate 32 is provided with screws at both ends. The two ends of the screws pass through the through holes on the same side of a pair of T-shaped support plates 31 and are fixed by locking nuts 39.

[0061] In the above technical solution, a pair of T-shaped support plates 31 are first attached to the bridge pier, and then a pair of tension plates 32 are pre-fixed (not completely fixed) through the through holes on the first ear plate 35 and the second ear plate 37 with screws. The position is adjusted so that the T-shaped support plates 31 are symmetrical with the front support frame as the center, and the side walls of the tension plates 32 are made to abut against the side wall of the bridge pier as much as possible. Finally, the locking nut 39 is tightened. Finally, the lifting drive mechanism 33 is installed on the T-shaped support plates 31.

[0062] In another technical solution, anti-slip layers are provided on the bottom of the transverse support plate, the side of the vertical pressure plate facing the pier sidewall, and the side of the tie plate 32 facing the pier sidewall. Providing anti-slip layers helps increase the friction between the T-shaped support plate 31 and the tie plate 32 and the pier sidewall, thereby improving support stability.

[0063] In another technical solution, the top of the horizontal support platform 34 is provided with a central recess corresponding to the bottom of the front support frame and side recesses corresponding to the two bottom ends of the triangular support frame 200. The central and side recesses provide lateral abutment force, thereby preventing slippage and improving support stability.

[0064] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A bridge erecting machine anti-tilt auxiliary device, characterized in that, include: The front support frame is mounted on the front cantilever of the front outrigger of the bridge erecting machine; A triangular support frame, the top center of which is rotatably mounted on the front side wall of the front support frame; The bottom support components include: A pair of T-shaped support plates are detachably and oppositely locked onto the pier below the front outrigger, and are located on both sides in front of the front outrigger. A pair of tensioning plates, each pair of tensioning plates having its ends detachably tensioned and fixed to a pair of T-shaped support plates, with the pair of tensioning plates arranged opposite to each other; A pair of lifting drive mechanisms are respectively arranged opposite to each other on the top of a pair of T-shaped support plates, and the lifting ends of the pair of lifting drive mechanisms are inclined toward the front support frame, and a horizontal support platform is provided on the top of the lifting ends; When the front support leg is supported on the pier, the bottom of the front support frame and the two ends of the bottom of the triangular support frame are located directly above the horizontal support platform at a preset distance. When the front support leg is subjected to a rotation greater than a preset arc, the bottom of the front support frame abuts against the horizontal support platform; When the triangular support is subjected to a swing radius greater than the preset value, the bottom of the corresponding side of the triangular support abuts against the horizontal support platform. A fixed shaft is provided on the front support frame, and a bearing is coaxially sleeved on the fixed shaft. The triangular support frame is provided with a shaft hole, and the shaft hole is coaxially fixed to the outer wall of the bearing. It also includes anti-sway components, which include: A pair of arc-shaped pressure bars are coaxially and oppositely disposed on the outer side wall of the bearing; An arc-shaped guide sleeve is coaxially mounted on the fixed shaft and located between a pair of arc-shaped pressure rods. One end of the pair of arc-shaped pressure rods extends into the arc-shaped guide sleeve, and a partition is provided at the center of the arc-shaped guide sleeve. A pair of anti-sway springs, with one end of each anti-sway spring located on both sides of the partition and the other end respectively provided with a baffle.

2. The anti-tilting auxiliary device for bridge erecting machines as described in claim 1, characterized in that, Pressure sensors are provided on both sides of the partition. The pressure sensors are used to detect the pressure borne by the anti-sway spring. The pressure sensors are connected to the control room of the bridge erecting machine.

3. The anti-tilting auxiliary device for bridge erecting machines as described in claim 1, characterized in that, An angle sensor is installed on the arc-shaped pressure bar. The angle sensor is used to detect the rotational deviation angle of the arc-shaped pressure bar. The angle sensor is connected to the control room of the bridge erecting machine.

4. The anti-tilting auxiliary device for bridge erecting machines as described in claim 1, characterized in that, The T-shaped support plate includes a horizontal support plate and a vertical pressing plate. One end of the vertical pressing plate is provided with a first ear plate, and the other end is provided with a slide rail along its length. A pair of limiting grooves are provided opposite each other on the side wall of the slide rail along its sliding direction. A second ear plate is slidably provided in the slide rail. A pair of limiting protrusions are provided opposite each other on the side wall of the second ear plate. The pair of limiting protrusions are slidably locked in the pair of limiting grooves. Multiple through holes are provided on the end of the second ear plate located outside the slide rail and on the first ear plate. The tensioning plate has screws at both ends, and the two ends of the screws pass through the through holes on the same side of a pair of T-shaped support plates and are fixed by locking nuts.

5. The anti-tilting auxiliary device for bridge erecting machines as described in claim 4, characterized in that, The bottom of the horizontal support plate, the side of the vertical pressure plate facing the pier sidewall, and the side of the tie plate facing the pier sidewall are all covered with an anti-slip layer.

6. The anti-tilting auxiliary device for bridge erecting machines as described in claim 1, characterized in that, The top of the horizontal support platform is provided with a central sinking groove corresponding to the bottom of the front support frame and a side sinking groove corresponding to the two bottom ends of the triangular support frame.

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