Auxiliary supporting structure for supporting leg of bridge girder erection machine
Technical Field
The utility model belongs to the technical field of bridge girder erection machine support, and particularly relates to an auxiliary support structure for a supporting leg of a bridge girder erection machine.
Background
The bridge girder erection machine is equipment for placing prefabricated girder segments on prefabricated piers. The bridge girder erection machine belongs to the field of cranes, and has the main functions of lifting girder segments, conveying the girder segments to positions and then placing the girder segments down, when the bridge girder erection machine is used for construction, the front supporting legs of the bridge girder erection machine are usually required to be installed on a group of piers to be constructed in advance, then the front supporting legs and the rear supporting legs of the bridge girder erection machine are taken as supporting points, the bridge girder is conveyed to a construction position, and in the process, the stability of the front supporting legs and the rear supporting legs is guaranteed, so that the construction is of great importance.
Through retrieving for example, the patent with the bulletin number of CN 202099741U discloses a supporting structure of a front landing leg of a bridge girder erection machine, two stand columns are arranged at intervals, a plurality of cross braces are arranged between the two stand columns from top to bottom, the stand columns are formed by sleeving a plurality of telescopic joints, each stand column is provided with a height adjusting hole, a shaft pin is arranged in the matching height adjusting hole, one end of each stand column is hinged to a front upper beam and a rear upper beam, a hinged support is arranged at the other end of each stand column and is supported on a pad pier of a lower beam, a diagonal bracing telescopic rod is hinged between the bottom of the front upper beam and the hinged support of each stand column, each diagonal bracing telescopic rod is formed by sleeving a plurality of telescopic joints, and a plurality of pin holes are formed in the telescopic joints and are provided with diagonal bracing steel pins in the matching pin holes. The front supporting leg supporting structure of the bridge girder erection machine is simple in structure, and high in construction efficiency, and can adjust the height of the front supporting leg and adapt to various girder transporting working conditions.
The auxiliary support structure in the above patent has the following disadvantages at present:
The supporting framework in the above patent needs to be assembled in a telescopic way according to the height of the bridge when in use, but in the construction process, the heights of the piers under the topographic conditions of different areas are inconsistent, and under the condition of higher heights, the use conditions and the use effect of the supporting structure in the above patent are greatly limited, so that the supporting framework is greatly limited by the height of the bridge and the topographic factors in the actual use process, and has larger limitation.
Disclosure of utility model
In order to solve the technical problems, the utility model provides an auxiliary supporting structure for supporting legs of a bridge girder erection machine, which aims to solve the problems that in the background art, bridge piers under different regional topography conditions are inconsistent in height and the use conditions and the use effect of the supporting structure in the patent are limited greatly under the condition of higher height, so that the supporting structure is limited greatly by the height of a bridge pier and the topography factors in the actual use process, and has larger limitation.
The utility model discloses a purpose and an effect of a supporting leg auxiliary supporting structure of a bridge girder erection machine, which are achieved by the following specific technical means:
A bridge girder erection machine landing leg auxiliary support structure, comprising: a fixing plate; the fixing plate adopts a rectangular plate structure, and penetrating screw hole structures are formed in the front side of the fixing plate in an equidistant arrangement mode; the rear side of the fixed plate is fixedly provided with a mounting plate with a rectangular plate structure through bolts; the rear side of the mounting plate is fixedly provided with a second sliding rail; the bottom of the inner side of the second sliding rail is provided with a sliding block with a rectangular block structure in a sliding manner, and one side of the sliding block is provided with a penetrating screw hole structure; the bottom of the sliding block is rotatably connected with a damper; the bottom swivelling joint of attenuator is provided with the connecting plate of rectangular plate structure.
Further, a first sliding rail is fixedly arranged on the front side of the fixed plate; the inner side of the first sliding rail is rotatably provided with a first bidirectional screw rod; a first motor is fixedly arranged on one side of the first sliding rail and is in transmission connection with a first bidirectional screw rod; the two sets of sliding plates of a set of rectangular plate structure that all slide in the place ahead of first slide rail, and the sliding plate passes through screw-thread fit with first two-way lead screw and is connected, and T shape spout structure has been seted up to the inner wall of sliding plate.
Further, a second bidirectional screw rod is rotatably arranged in the trapezoid chute of the sliding plate; the front side of the sliding plate is fixedly provided with a second motor which is in transmission connection with a second bidirectional screw rod; the front side and the rear side of the trapezoidal chute of the sliding plate are both provided with clamping plates of a group of rectangular plate structures in a sliding manner, and the clamping plates are connected with the second bidirectional screw rod in a threaded fit manner.
Further, a first lead screw is rotatably arranged on the inner side of the second sliding rail, and the first lead screw is connected with the sliding block through threaded fit; a third motor is fixedly arranged at the rear side end of the second sliding rail and is in transmission connection with the first lead screw; one side of the sliding block is rotatably provided with a worm; a fourth motor is fixedly arranged on one side of the sliding block and is in transmission connection with the worm; the outer side of the rotating shaft of the damper is fixedly provided with a worm wheel which is meshed with the worm.
Compared with the prior art, the utility model has the following beneficial effects:
According to the application, when the bridge girder erection machine is used, the fixing plate is arranged on the front supporting leg of the bridge girder erection machine, the position and the angle of the damper are adjusted according to the position of the front wall of the bridge pier, the connecting plate is riveted with the bridge pier after the adjustment, and the damper is fixedly connected with the bridge pier, so that the supporting effect can be provided for the supporting leg of the bridge girder erection machine from the front, the phenomenon that the supporting leg tilts forward is avoided, the stability of the supporting leg of the bridge girder erection machine is further improved, a better using effect is brought, the device is directly fixedly connected with the supporting leg, the device is not limited by the height and the topography condition of the bridge pier, and the practicability is higher.
Through the distance between two sets of sliding plates of width adjustment according to the landing leg, can satisfy the use of the landing leg of different width, the distance between two sets of splint of thickness adjustment according to the landing leg can be through the cooperation of each set of splint with fixed centre gripping of fixed plate on the landing leg to can satisfy the operation needs to different model landing legs, have higher suitability.
Drawings
Fig. 1 is a schematic overall axial view of the present utility model.
Fig. 2 is a schematic diagram of the overall bottom view of the present utility model.
Fig. 3 is a schematic overall top view of the present utility model.
Fig. 4 is a schematic top view of the present utility model in an overall disassembled state.
Fig. 5 is a schematic view showing the structure of the present utility model in a bottom view in an integrally disassembled state.
FIG. 6 is a schematic view of the mounting plate portion of the present utility model in a bottom view.
In the figure, the correspondence between the component names and the drawing numbers is:
1. A fixing plate; 101. a first slide rail; 102. the first bidirectional screw rod; 103. a first motor; 104. a sliding plate; 105. a second bi-directional lead screw; 106. a second motor; 107. a clamping plate; 2. a mounting plate; 201. a second slide rail; 202. a first lead screw; 203. a third motor; 204. a slide block; 205. a worm; 206. a fourth motor; 207. a damper; 208. a worm wheel; 209. and (5) connecting a plate.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples.
Example 1:
As shown in fig. 1 to 6:
The utility model provides an auxiliary supporting structure of a supporting leg of a bridge girder erection machine, which comprises the following components: a fixing plate 1; the fixing plate 1 adopts a rectangular plate structure, and penetrating screw hole structures are formed in the front side of the fixing plate 1 in an equidistant arrangement mode; the rear side of the fixed plate 1 is fixedly provided with a mounting plate 2 with a rectangular plate structure through bolts; the rear side of the mounting plate 2 is fixedly provided with a second sliding rail 201; a sliding block 204 with a rectangular block structure is arranged at the bottom of the inner side of the second sliding rail 201 in a sliding manner, and a penetrating screw hole structure is formed on one side of the sliding block 204; a damper 207 is rotatably arranged at the bottom of the sliding block 204; the bottom of the damper 207 is rotatably connected to a connection plate 209 provided with a rectangular plate structure.
The inner side of the second sliding rail 201 is rotatably provided with a first lead screw 202, and the first lead screw 202 is connected with the sliding block 204 through screw thread fit; a third motor 203 is fixedly arranged at the rear side end of the second slide rail 201, and the third motor 203 is in transmission connection with the first screw 202; one side of the sliding block 204 is rotatably provided with a worm 205; a fourth motor 206 is fixedly arranged on one side of the sliding block 204, and the fourth motor 206 is in transmission connection with a worm 205; a worm wheel 208 is fixedly arranged on the outer side of the rotating shaft of the damper 207, and the worm wheel 208 is meshed with the worm 205.
Specific use and action of the embodiment:
The mounting plate 2 and the fixing plate 1 are fixedly connected through the bolts, the mounting plate 2 and the second sliding rail 201 are mounted at the proper position on the fixing plate 1, then the position and the angle of the damper 207 are adjusted according to the position of the front wall of the bridge girder erection machine, the third motor 203 is started to drive the first screw 202 to rotate, thereby the sliding block 204 and the damper 207 are driven to slide along the bottom of the second sliding rail 201, after the position is adjusted to the proper position, the fourth motor 206 is started to drive the worm 205 to rotate, the worm 205 and the damper 207 are synchronously driven to rotate at the bottom of the sliding block 204, the damper 207 is enabled to rotate backwards towards the position of the bridge girder erection machine, then the connecting plate 209 is riveted on the bridge girder erection machine, so that the damper 207 and the bridge girder erection machine are fixedly connected, the supporting effect can be provided for the bridge girder erection machine support leg from the front, the phenomenon of the bridge girder erection machine support leg is avoided, the stability of the bridge girder erection machine support leg is further improved, and a better using effect is achieved.
Example 2:
on the basis of the embodiment 1, as shown in fig. 1 to 6:
Wherein, the front side of the fixed plate 1 is fixedly provided with a first sliding rail 101; the inner side of the first sliding rail 101 is rotatably provided with a first bidirectional screw rod 102; a first motor 103 is fixedly arranged on one side of the first sliding rail 101, and the first motor 103 is in transmission connection with a first bidirectional screw 102; the two groups in front of the first sliding rail 101 are both provided with a group of sliding plates 104 with rectangular plate structures in a sliding manner, the sliding plates 104 are connected with the first bidirectional screw rod 102 in a threaded fit manner, and the inner walls of the sliding plates 104 are provided with T-shaped sliding groove structures.
Wherein, the trapezoidal chute of the sliding plate 104 is internally provided with a second bidirectional screw rod 105 in a rotating way; the front side of the sliding plate 104 is fixedly provided with a second motor 106, and the second motor 106 is in transmission connection with a second bidirectional screw rod 105; the front side and the rear side of the trapezoidal chute of the sliding plate 104 are both provided with clamping plates 107 with a group of rectangular plate structures in a sliding manner, and the clamping plates 107 are connected with the second bidirectional screw rod 105 through threaded fit.
Specific use and action of the embodiment:
In the utility model, when the bridge girder erection machine is used, one side of the first sliding rail 101 faces the supporting leg surface of the bridge girder erection machine, then the distance between the two groups of sliding plates 104 is adjusted according to the width of the supporting leg, the first motor 103 is started to drive the first bidirectional screw 102 to rotate, so that the two groups of sliding plates 104 are driven to move in opposite directions on the front side of the first sliding rail 101, the two groups of sliding plates 104 are respectively moved to the two sides of the supporting leg, then the positions of the two groups of clamping plates 107 are adjusted according to the front-back width of the supporting leg, the second motor 106 is started to drive the second bidirectional screw 105 to rotate, the second bidirectional screw 105 is started to drive the two groups of clamping plates 107 to slide along the trapezoidal sliding grooves on the inner sides of the sliding plates 104, so that the inner sides of the two groups of clamping plates 107 are contacted with the front-back sides of the supporting leg, the outer sides of the supporting leg are fixedly clamped, the fixing plate 1 is fixedly connected with the supporting leg in a preliminary mode, and the fixing plate 1 is fixedly connected with the supporting leg further through bolts, and the fixing plate 1 is fixedly connected with the supporting leg.