Self-balancing supporting leg device of small-curvature ramp bridge girder erection machine

Abstract

The utility model discloses a self-balancing supporting leg device of a small-curvature ramp bridge girder erection machine, belongs to the technical field of bridge girder erection machine construction, and aims to solve the problem that in the prior art, when a bridge girder erection machine is used for erecting and laying a beam between piers of a small-curvature ramp, supporting is unbalanced. Through the top cross beam, the bottom cross beam, the perforated steel block, the connecting steel block, the pin shaft, the jack support, the fixed lock sleeve, the jack main body, the rubber non-slip mat, the gradienter, the laser instrument, the baffle plate and the receiving plate, the horizontal state of the top cross beam is calibrated by utilizing the telescopic action of four jacks and matching with the double gradienter; when the bridge girder erection machine carries out girder erection laying between piers of a small-curvature ramp, supporting feet of the bridge girder erection machine still work horizontally under the condition that the piers incline in the transverse bridge direction, a laser instrument is used for detecting deformation early warning overload of a bottom cross beam, the safety of operation and construction of the bridge girder erection machine is guaranteed, and meanwhile the device is simple in overall structure, economical, efficient, safe, reliable and suitable for popularization and application. And the device can be popularized and applied to bridge erection of small-curvature ramps.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge erecting machine construction technical field especially small curvature ramp bridge erecting machine self -balancing support foot device. BACKGROUND

[0002] In bridge construction, bridge erecting machine construction is the preferred construction method under high pier condition, and its main function is to hoist, transport and lower the prefabricated beam to the completed pier, in the bridge erecting machine construction of straight bridge, the support foot of bridge erecting machine can directly abut on the pier, in the curved bridge, especially under the condition of small curvature ramp, the completed pier is provided with a certain slope in the transverse bridge direction, which makes the gap between the support foot of conventional bridge erecting machine and the pier have different heights.

[0003] If the support foot of bridge erecting machine is directly abutted on the pier in the curved bridge construction, the upper structure of bridge erecting machine will all be inclined transversely, which seriously endangers the hoisting, transportation and erection of the beam body, and the existing solution is mainly to pad the wood blocks or other components with different heights between the support foot of bridge erecting machine and the pier to fill and wedge, so as to ensure that the bridge erecting machine remains horizontal, but this method is complicated to operate, seriously reduces the construction efficiency, and is difficult to ensure the stability and safety of the support, therefore, it has important practical engineering significance to design a small curvature ramp bridge erecting machine self -balancing support foot device which is convenient to connect and accurate and efficient. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of overcoming the defect that the support is unbalanced when the bridge erecting machine is used to erect and lay the beam between the piers of small curvature ramp in the prior art, and provides a small curvature ramp bridge erecting machine self -balancing support foot device.

[0005] In order to solve the above technical problems, the utility model adopts the technical scheme of a small curvature ramp bridge erecting machine self -balancing support foot device, which comprises a bottom crossbeam, a connecting steel block is welded in the middle of the top end of the bottom crossbeam, two front and rear distributed perforated steel blocks are welded at the top end of the connecting steel block, a pin shaft is penetrated between the two front and rear distributed perforated steel blocks, locking blocks are fixed at both ends of the pin shaft, a perforated steel block is also sleeved on the pin shaft, a top crossbeam is welded at the top end of the middle perforated steel block, two front and rear distributed jack supports are welded at both sides of the bottom end of the top crossbeam, fixed lock sleeves are embedded at the bottom end of the jack supports, jack bodies are fixed in the fixed lock sleeves, rubber antiskid pads are pasted at the bottom end of the jack bodies, the bottom end of the rubber antiskid pads abuts against the top end of the bottom crossbeam, and a level meter is magnetically attracted to the outside and middle of the top end of the top crossbeam.

[0006] Preferably, the thickness of the perforated steel block is less than the inner distance between the left and right two perforated steel blocks, the diameter of the pin shaft is less than the hole diameter of the perforated steel block, and the length of the pin shaft is greater than the outer distance between the left and right two perforated steel blocks.

[0007] Preferably, the top end of the jack support is provided with a clamping groove matched with the shape of the fixed lock sleeve, and the fixed lock sleeve is rotatably embedded in the inside of the clamping groove.

[0008] Preferably, the jack body is provided with two groups, and each group of the jack body is provided with two, and the two groups of the jack body are symmetrically distributed through the connecting steel block.

[0009] Preferably, the level gauge is provided with two, one of which is located at the center of the top end of the top cross beam, and the other is located at one side of the top end of the top cross beam, and the measuring directions of the two level gauges are vertically distributed.

[0010] Preferably, the middle part of one side of the bottom cross beam is fixed with two shielding plates distributed in an upper and lower interval, the outer end of one side of the bottom cross beam is fixed with a laser instrument, and the side of one side of the bottom cross beam away from the laser instrument is fixed with a receiving plate.

[0011] Preferably, the shielding plates, the laser instrument and the receiving plate are located on the same side of the bottom cross beam, and the laser of the laser instrument passes through the gap between the two shielding plates and directly irradiates on the receiving plate.

[0012] Compared with the prior art, the beneficial effects of the present application include:

[0013] The four jack bodies and the two level gauges are matched to calibrate the top end face of the top cross beam to keep horizontal, so that when the bridge erecting machine is used to erect a bridge between the piers of a small curvature loop, the bridge erecting machine still keeps horizontal work under the condition that the support feet are inclined in the transverse direction of the bridge, and the cooperation of the laser instrument, the receiving plate and the shielding plate can detect the overpressure bearing deformation of the bottom cross beam, so as to further ensure the safety of the operation of the bridge erecting machine, and the whole device is simple in structure, economical and efficient, safe and reliable, and can be widely used in the erection of bridges in small curvature loops. BRIEF DESCRIPTION OF DRAWINGS

[0014] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts. Among them:

[0015] Figure 1 The structure schematic view of the front view is schematically shown according to one embodiment of the present application;

[0016] Figure 2 The structure schematic view of the front view in use is schematically shown according to one embodiment of the present application;

[0017] Figure 3 The structure schematic view of the front view in use is schematically shown according to one embodiment of the present application;

[0018] Figure 4 Fig. 1 is a schematic view of a structure according to an embodiment of the present application in a use state;

[0019] Figure 5 Fig. 1 is a schematic view of a structure according to an embodiment of the present application in a use state;

[0020] In the figure, the reference numerals are as follows: 1, top cross beam; 2, bottom cross beam; 3, perforated steel block; 4, connecting steel block; 5, pin shaft; 6, jack support; 7, fixed lock sleeve; 8, jack main body; 9, rubber non-slip pad; 10, level; 11, laser instrument; 12, shielding plate; 13, receiving plate. DETAILED DESCRIPTION

[0021] It is easy to understand that, according to the technical scheme of the present application, a person skilled in the art can propose a plurality of structure modes and implementation modes that can be replaced with each other without changing the essential spirit of the present application. Therefore, the following specific embodiments and the accompanying drawings are only exemplary descriptions of the technical scheme of the present application, and should not be regarded as the whole or as a limitation or restriction on the technical scheme of the present application.

[0022] In order to solve the defect that the bridge girder erecting machine in the prior art is not balanced when erecting and laying a bridge girder between the piers of a small-curvature ramp, the following scheme is disclosed, specifically as shown in Figures 1-4

[0023] The small-curvature ramp bridge girder erecting machine self-balancing supporting foot device comprises a bottom cross beam 2, a connecting steel block 4 is welded at the middle of the top end of the bottom cross beam 2, two front and rear distributed perforated steel blocks 3 are welded at the top end of the connecting steel block 4, a pin shaft 5 penetrates between the two front and rear distributed perforated steel blocks 3, locking blocks are fixed at both ends of the pin shaft 5, one perforated steel block 3 is further sleeved on the pin shaft 5, a top cross beam 1 is welded at the top end of the middle perforated steel block 3, two front and rear distributed jack supports 6 are welded at both sides of the bottom end of the top cross beam 1, fixed lock sleeves 7 are embedded at the bottom end of the jack supports 6, jack main bodies 8 are fixed in the interiors of the fixed lock sleeves 7, rubber non-slip pads 9 are pasted at the bottom end of the jack main bodies 8, the bottom end of the rubber non-slip pads 9 abuts against the top end of the bottom cross beam 2, and a level 10 is magnetically attracted to the outside and middle of the top end of the top cross beam 1.

[0024] The thickness of the perforated steel block 3 is less than the inner interval between the left and right two perforated steel blocks 3, the diameter of the pin shaft 5 is less than the hole diameter of the perforated steel block 3, and the length of the pin shaft 5 is greater than the outer interval between the left and right two perforated steel blocks 3.

[0025] A clamping groove that is matched with the shape of the fixed lock sleeve 7 is formed at the top end of the jack support 6, and the fixed lock sleeve 7 is rotationally embedded in the interior of the clamping groove. ​

[0026] The jack body 8 is provided with two groups, each group of jack body 8 is provided with two, two groups of jack body 8 are all through the connection steel block 4 and are symmetrically distributed;

[0027] The level 10 is provided with two, one of which is located at the center of the top of the top beam 1, and the other is located at one side of the top of the top beam 1, the measuring directions of the two levels 10 are vertically distributed;

[0028] The middle of one side of the bottom beam 2 is fixed with two upper and lower spaced shielding plates 12, the outer end of one side of the bottom beam 2 is fixed with a laser instrument 11, and the side of the bottom beam 2 away from the laser instrument 11 is fixed with a receiving plate 13;

[0029] The shielding plate 12, the laser instrument 11 and the receiving plate 13 are located on the same side of the bottom beam 2, and the laser of the laser instrument 11 passes through the gap between the two shielding plates 12 and directly irradiates on the receiving plate 13.

[0030] In this embodiment, when the bridge girder is laid between the piers of the small curvature ramp, the bottom beam 2 is placed on the end face of the pier, and the display state of the middle level 10 is observed. When one side is higher, the two jack bodies 8 on the opposite side are started to extend synchronously, so that the bottom end of the jack body 8 drives the rubber antiskid pad 9 to extrude the top end of the bottom beam 2 and slightly move along the top end face of the bottom beam 2. The two fixed lock sleeves 7 on the higher side are synchronously adjusted to be shortened, so that the top beam 1 is adjusted to be turned over around the pin shaft 5, so that the left and right sides are horizontally distributed, until the middle level 10 is in a horizontal state. Then the display state of the one side level 10 is observed, the two fixed lock sleeves 7 on the lower side are started to extend, and the two fixed lock sleeves 7 on the higher side are started to shorten. Because there is a certain movable space between the pin shaft 5 and the perforated steel block 3, the top beam 1 is adjusted to be high and low, until the one side level 10 shows horizontal, so that the top beam 1 is in a horizontal state. Because the fixed lock sleeve 7 has good telescopic adjustment control, the accuracy and convenience of the horizontal adjustment of the top beam 1 are improved. When the horizontal adjustment of the top beam 1 is completed, the bridge girder is laid on the top of the top beam 1, so that the bridge girder is stable on the pier of the small curvature ramp;

[0031] In the process of adjusting, the laser instrument 11 is started, the irradiation light of the laser instrument 11 passes through the gap between the shielding plates 12, and the receiving plate 13 receives the signal. When the bearing stress of the top end of the top beam 1 is large, the bottom beam 2 is deformed under pressure, the gap between the upper and lower shielding plates 12 is reduced, so that the emission light of the laser instrument 11 is blocked, and then the receiving of the receiving plate 13 is affected. The signal receiving condition of the receiving plate 13 is used to avoid excessive bearing of the bottom beam 2 and the top beam 1.

[0032] The technical scope of the utility model is not only limited to the content in the above description, and the person skilled in the art can make various deformations and modifications to the above embodiment without departing from the technical thought of the utility model, and these deformations and modifications should all belong to the protection scope of the utility model.

Claims

1. A self-balancing prop leg device for a small radius ramp-bridge machine, characterized by, The utility model relates to a kind of steel frame, including: Bottom crossbeam, the middle part of the top end of the bottom crossbeam is welded with connecting steel block, the top end of the connecting steel block is welded with two front and rear distributed perforated steel blocks, pin shaft is penetrated between the two front and rear distributed perforated steel blocks, the both ends of the pin shaft are fixed with locking block, one perforated steel block is also sleeved on the pin shaft, the top end of the middle perforated steel block is welded with top crossbeam, the bottom end of the top crossbeam is welded with two front and rear distributed jack supports on both sides, the bottom end of the jack support is embedded with fixed lock sleeve, the inside of the fixed lock sleeve is fixed with jack body, the bottom end of the jack body is pasted with rubber antiskid pad, the bottom end of the rubber antiskid pad is in abutment with the top end of bottom crossbeam, the outside and middle part of the top end of top crossbeam are magnetically attracted with level meter.

2. The self-balancing outrigger device of a small-curve ramp-bridge machine according to claim 1, wherein: The thickness of the perforated steel block is less than the inner interval between the left and right two perforated steel blocks, the diameter of the pin shaft is less than the hole diameter of the perforated steel block, and the length of the pin shaft is greater than the outer interval between the left and right two perforated steel blocks.

3. The self-balancing outrigger device of a small-curve ramp-bridge machine according to claim 1, wherein: The top end of the jack support is provided with a clamping groove matched with the shape of the fixed lock sleeve, and the fixed lock sleeve is rotatably embedded in the inside of the clamping groove.

4. The self-balancing outrigger device of a small-curve ramp-bridge-erector machine according to claim 1, wherein: The jack body is provided with two groups, each group of the jack body is provided with two, and the two groups of the jack body are symmetrically distributed through the connecting steel block.

5. The self-balancing outrigger device of a small-curve ramp-bridge-erector machine according to claim 1, wherein: The level meter is provided with two, one of the level meters is located at the center of the top end of the top crossbeam, and the other level meter is located at one side of the top end of the top crossbeam, and the measurement directions of the two level meters are vertically distributed.

6. The self-balancing outrigger device of a small-curve ramp-bridge-erector machine according to claim 1, wherein: The middle part of one side of the bottom crossbeam is fixed with two upper and lower spaced distribution shielding plates, the outer end of one side of the bottom crossbeam is fixed with laser instrument, and the side of one side of the bottom crossbeam away from the laser instrument is fixed with receiving plate.

7. The self-balancing outrigger device of a small-curve ramp-bridge machine according to claim 6, wherein: The shielding plate, laser instrument and receiving plate are located on the same side of the bottom crossbeam, and the laser of the laser instrument is directly irradiated on the receiving plate through the gap between the two shielding plates.

Images