CN211897905U - Steering system of bridge girder erection machine - Google Patents
Steering system of bridge girder erection machine Download PDFInfo
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- CN211897905U CN211897905U CN202020503765.8U CN202020503765U CN211897905U CN 211897905 U CN211897905 U CN 211897905U CN 202020503765 U CN202020503765 U CN 202020503765U CN 211897905 U CN211897905 U CN 211897905U
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Abstract
The utility model relates to a steering system of bridge girder erection machine, including first steering mechanism and second steering mechanism, first steering mechanism includes the walking vehicle bottom, the walking vehicle bottom includes crossbeam and landing leg, crossbeam left end installation first landing leg, crossbeam right-hand member installation second landing leg; a round hole is formed in the middle of the cross beam, and a jacking assembly is mounted in the round hole; the second steering mechanism comprises a walking vehicle bottom, a jacking assembly and a hydraulic driving assembly, the right side wall of the second supporting leg of the second steering mechanism is connected with the hydraulic driving assembly, the hydraulic driving assembly comprises a hydraulic cylinder and a connecting rod, the front end of a push rod of the hydraulic cylinder is connected onto the second supporting leg of the second steering mechanism, and a cylinder body of the hydraulic cylinder is connected with the connecting rod. The steering device has the advantages that any damage to the metal structure of the bridge girder erection machine can not be caused in the steering process, the operation is simple and convenient, the steering device can be applied to the integral steering of the bridge girder erection machine, and the blank of the existing steering-free system of the bridge girder erection machine is filled.
Description
Technical Field
The utility model relates to a construction technical field, especially a steering system of frame bridge crane.
Background
The bridge erecting machine is one of the most important construction equipments in the construction of various bridges at present, and is mainly applied to the hoisting of beam plates in the bridge construction, so that the forward span is required to be propelled along with the completion of the hoisting of each span beam plate, because the bridge has a turning radius in a design standard range, the centers of the front span and the rear span are not on the same straight line, and the front span is required to be propelled according to the design and the actual position of a bridge pier, because the bridge erecting machine is not provided with a steering system at present, the steering is required during the construction, after the cart track of the equipment is longitudinally shifted, the cart traversing mechanisms on the two sides respectively run in opposite directions (if the left steering is required, the traversing mechanism on the right side runs forwards, and the traversing mechanism on the left side runs backwards), the steering is completed, the operation greatly damages the steel structure to the equipment, the deformation is possible, and the manual operation is not synchronous once the two cart mechanisms run, the track gauge of the trolley is changed, so that the whole trolley is derailed and falls.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model aims to provide a steering system of bridging machine realizes the turning to of bridging machine.
The embodiment of the utility model provides an in adopt following scheme to realize: the steering system of the bridge girder erection machine comprises a first steering mechanism and a second steering mechanism, wherein the first steering mechanism comprises a walking vehicle bottom, the walking vehicle bottom comprises a cross beam and supporting legs, the left end of the cross beam is provided with a first supporting leg, the right end of the cross beam is provided with a second supporting leg, and the bottoms of the first supporting leg and the second supporting leg are provided with walking wheels; a round hole is formed in the middle of the cross beam, and a jacking assembly is mounted in the round hole; the jacking assembly comprises a rotary drum arranged in a circular hole of the cross beam, a jacking shaft is arranged in the rotary drum, a helical blade is arranged on the outer wall of the jacking shaft, the lower end of the jacking shaft is connected with a worm, the worm is connected with a worm gear, the worm gear is driven by a motor, a rotary support is arranged at the upper end of the jacking shaft, a jacking supporting wheel is arranged on the inner side wall of the rotary drum, the jacking supporting wheel is matched with the helical blade, and the axial direction of the jacking supporting wheel is perpendicular to the axial direction of the jacking shaft;
the second steering mechanism comprises a walking vehicle bottom, a jacking assembly and a hydraulic driving assembly, the right side wall of the second supporting leg of the second steering mechanism is connected with the hydraulic driving assembly, the hydraulic driving assembly comprises a hydraulic cylinder and a connecting rod, the front end of a piston rod of the hydraulic cylinder is connected onto the second supporting leg of the second steering mechanism, the cylinder body of the hydraulic cylinder is connected with the connecting rod, and the walking vehicle chassis of the second steering mechanism is arranged on the arc-shaped steering track.
The utility model relates to an embodiment, the lug groove has been seted up on the lateral wall of second landing leg of second steering mechanism, vertical equidistant set up screw hole in the lug groove, the through-hole has been seted up to the upper portion and the lower part symmetry of lug, the interval of two adjacent screw holes in lug inslot equals the interval of two through-holes of lug, the bolt passes the through-hole and locks into threaded hole, the lug with the piston rod of pneumatic cylinder is articulated.
In an embodiment of the present invention, a jacking supporting wheel is installed at each of the left and right portions of the inside of the rotating drum, the distance between the two jacking supporting wheels in the vertical direction is equal to the pitch of 1/2 spiral blades, and the two jacking supporting wheels are located between two adjacent spiral blades; the jacking support wheel is internally provided with a rotating shaft, the tail part of the rotating shaft is connected with a bearing seat, and the bearing seat is fixed at the joint of the outer side wall of the rotating drum and the upper surface of the cross beam.
In an embodiment of the present invention, the rotating shaft is connected with a second bearing between the bearing seats.
In an embodiment of the present invention, the connecting rod includes a first connecting rod and a second connecting rod, the first connecting rod is provided with a long T-shaped groove located at the left part of the first connecting rod, the right part of the second connecting rod is provided with a threaded hole, and a bolt passes through the T-shaped groove and penetrates into the threaded hole to be screwed; the right end of the hydraulic cylinder is hinged with the left end of the second connecting rod.
In an embodiment of the present invention, the upper limit electric switch is installed at the top of the inside of the rotary drum.
The utility model relates to an embodiment, first bearing is all installed to the top and the bottom of rotary drum, the outer lane and the rotary drum fixed connection of first bearing, the inner circle of first bearing with jacking axle fixed connection.
The utility model has the advantages that: the utility model provides a steering system of bridging machine, lift up the landing leg crossbeam of bridging machine through first steering mechanism and second steering mechanism, the gyration is supported can not take place relative rotation with the crossbeam at the contact site of upper portion and crossbeam, the rotation of supporting self through the gyration has effectively avoided the support department to the produced moment of torsion of crossbeam, thereby the in-process that turns to can not cause any damage to bridging machine metallic structure, and easy and simple to handle, can be applied to the whole of bridging machine and turn to, the blank that present bridging machine does not have a steering system has been filled.
Drawings
Fig. 1 is a schematic structural view of a second steering mechanism of a steering system of an axle erecting machine.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a partially enlarged schematic view of fig. 1 at B.
Fig. 4 is a partially enlarged schematic view at C of fig. 1.
Fig. 5 is a partially enlarged schematic view of fig. 2 at D.
Fig. 6 is a schematic structural view of a first steering mechanism of a steering system of an axle erecting machine.
Fig. 7 is a simplified schematic of the front and rear steering and curved steering tracks of the bridge girder erection machine.
Fig. 8 is a schematic structural diagram of a road wheel frame on an arc-shaped steering track.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 8, the present invention provides a steering system of a bridge girder erection machine, including a first steering mechanism and a second steering mechanism, where the first steering mechanism includes a walking vehicle bottom, the walking vehicle bottom includes a beam 1 and legs, the left end of the beam 1 is provided with a first leg 2, the right end of the beam 1 is provided with a second leg 8, and the bottoms of the first leg 2 and the second leg 8 are provided with a walking wheel 19; a round hole is formed in the middle of the cross beam 1, and a jacking assembly is mounted in the round hole; the jacking assembly comprises a rotary drum 20 arranged in a circular hole of the cross beam 1, a jacking shaft 5 is arranged in the rotary drum 20, a helical blade 3 is arranged on the outer wall of the jacking shaft 5, the lower end of the jacking is connected with a worm 9, the worm 9 is connected with a worm gear 10, the worm gear 10 is driven by a motor, a rotary support 6 is arranged at the upper end of the jacking shaft, a jacking supporting wheel 14 is arranged on the inner side wall of the rotary drum 20, the jacking supporting wheel 14 is matched with the helical blade 3, and the axial direction of the jacking supporting wheel 14 is perpendicular to the axial direction of the jacking shaft 5;
the second steering mechanism includes the walking vehicle bottom jacking subassembly and hydraulic drive subassembly, be connected with the hydraulic drive subassembly on the right side wall of second steering mechanism's second landing leg 8, the hydraulic drive subassembly includes pneumatic cylinder 15 and connecting rod 18, the front end of pneumatic cylinder 15's piston rod 16 is connected on the second landing leg 8 of second steering mechanism, the cylinder body of pneumatic cylinder 15 is connected with connecting rod 18, and the connecting rod is fixed on a fixed object, thereby the pneumatic cylinder is released and is used for driving second steering mechanism to remove and realize the bridging machine and turn to, the walking vehicle chassis of second steering mechanism is established on arc turns to track 24, and the orbital curvature radius of arc turns to can be taken the intermediate value 40m of the preceding, back landing leg crossbeam interval range value (usually being 30m-50 m) of bridging machine commonly used.
Referring to fig. 1, 7 and 8, in an embodiment of the present invention, the tread of the traveling wheel of the system is wider than the top surface of the arc-shaped turning track, and the turning angle of the axle erecting machine is smaller in the turning process, so that the difference between the turning radius of the axle erecting machine and the radius of the arc-shaped turning track can be adjusted automatically through the redundancy of the combination between the traveling wheel and the track, and the free rotation can be achieved.
Please continue to refer to fig. 1, in an embodiment of the present invention, a lug groove is formed on the side wall of the second leg 8 of the second steering mechanism, threaded holes are longitudinally and equidistantly formed in the lug groove, the upper portion and the lower portion of the lug 17 are symmetrically formed in the through hole, the distance between two adjacent threaded holes in the lug groove is equal to the distance between two through holes of the lug 17, a bolt passes through the through hole and is locked into the threaded hole, the lug 17 is hinged to the piston rod 16 of the hydraulic cylinder 15, and the height of the fixture in the construction site is different, so that the connection rod and the fixture are connected, the hydraulic cylinder is perpendicular to the leg of the walking vehicle bottom, and the thrust of the hydraulic cylinder is completely transmitted to the walking vehicle bottom.
Referring to fig. 2, in an embodiment of the present invention, the walking wheels 19 are installed on the front and the rear of the lower surfaces of the first supporting leg 2 and the second supporting leg 8, so as to facilitate moving and use, and the stress is uniform.
Referring to fig. 1, fig. 3 and fig. 6, in an embodiment of the present invention, a jacking supporting wheel 14 is installed at each of the left portion and the right portion of the rotating drum 20, the distance between the two jacking supporting wheels 14 in the vertical direction is equal to the pitch of 1/2 spiral blades 3, and the two jacking supporting wheels 14 are located between two adjacent spiral blades 3; a rotating shaft 21 is arranged in the jacking supporting wheel 14, a bearing seat 12 is connected to the tail of the rotating shaft 21, and the bearing seat 21 is fixed at the joint of the outer side wall of the rotating drum 20 and the upper surface of the cross beam 1, so that the jacking supporting wheel can rotate smoothly, and the jacking shaft can lift smoothly.
Referring to fig. 1, fig. 3 and fig. 6, in an embodiment of the present invention, a second bearing 13 is connected between the rotating shaft 21 and the bearing seat 12.
Referring to fig. 1, in an embodiment of the present invention, the connecting rod 18 includes a first connecting rod 182 and a second connecting rod 181, the first connecting rod 182 has a T-shaped slot with a long strip shape and is located at the left portion of the first connecting rod 182, the right portion of the second connecting rod 181 has a threaded hole, and a bolt passes through the T-shaped slot and penetrates into the threaded hole to be screwed; the right end of the hydraulic cylinder 15 is hinged with the left end of the second connecting rod 181, so that the connection can be realized by adjusting the length according to different distances between a fixed object and the hydraulic cylinder on a construction site.
Referring to fig. 1 and 6, in an embodiment of the present invention, an upper limit electrical switch 7 is installed at the top of the rotating drum 20 for limiting the stroke of the jacking shaft.
Referring to fig. 1 and fig. 6, in an embodiment of the present invention, the first bearing 4 is installed at both the top and the bottom of the rotating drum 20, the outer ring of the first bearing 4 is fixedly connected to the rotating drum 20, and the inner ring of the first bearing 4 is fixedly connected to the jacking shaft 5, so as to ensure that the jacking shaft rotates uniformly.
The utility model discloses an embodiment, the drive the adoption gear motor of worm wheel 10's motor preferred, what this system required is mechanical structure, as to how to control motor, go up spacing electrical apparatus switch, pneumatic cylinder and circuit structure etc. and be current technique, do not do the protection requirement.
The utility model discloses the theory of operation below has:
the first steering mechanism (without hydraulic driving component) is installed in the middle of the front leg beam of the bridge girder erection machine, the second steering mechanism (with hydraulic driving component) is placed in the middle of the rear leg beam of the bridge girder erection machine, two arc-shaped steering tracks (the track of the steering system of the track) with the length of about 2-3m are longitudinally laid on the ground of a construction site and are mutually vertical to the track of the bridge girder erection machine, the track distance between the two arc-shaped steering tracks is adjusted to be equivalent to the wheel distance of a walking wheel of the device, the walking wheel is erected on the two arc-shaped steering tracks, then a hydraulic cylinder at one side of a supporting leg of the system is connected to a fixed object or a support outside the bridge girder erection machine (the height matched with the hydraulic cylinder is adjusted through a lifting lug, the length of a connecting rod can adjust the distance between the device and the fixed object), after all the connections are finished, motors of the front and rear steering mechanisms can be started, the hydraulic device of the device at the rear landing leg is started (the hydraulic cylinder is controlled to operate by a three-position four-way electromagnetic valve), a piston rod of the hydraulic cylinder is ejected out, the rear end part moves left (the front end is fixed at the moment), so that the right rotation of the bridge girder erection machine is formed, and the left rotation of the bridge girder erection machine is formed otherwise. After the direction is turned, the motor of the front steering mechanism and the motor of the rear steering mechanism are reversely driven to enable the worm wheel to rotate clockwise to drive the worm to rotate anticlockwise, the worm slowly descends under the action of the jacking supporting wheel on the helical blade, wheels of the cart are stably erected on the cart track, and then the front steering mechanism and the rear steering mechanism are disassembled to complete all steering work. The above description is only for the preferred embodiment of the present invention, and should not be interpreted as limiting the scope of the present invention, which is intended to cover all the equivalent changes and modifications made in accordance with the claims of the present invention.
Claims (7)
1. A steering system of an axle erecting machine is characterized in that: the steering device comprises a first steering mechanism and a second steering mechanism, wherein the first steering mechanism comprises a walking vehicle bottom, the walking vehicle bottom comprises a cross beam and supporting legs, a first supporting leg is installed at the left end of the cross beam, a second supporting leg is installed at the right end of the cross beam, and walking wheels are installed at the bottoms of the first supporting leg and the second supporting leg; a round hole is formed in the middle of the cross beam, and a jacking assembly is mounted in the round hole; the jacking assembly comprises a rotary drum arranged in a circular hole of the cross beam, a jacking shaft is arranged in the rotary drum, a helical blade is arranged on the outer wall of the jacking shaft, the lower end of the jacking shaft is connected with a worm, the worm is connected with a worm gear, the worm gear is driven by a motor, a rotary support is arranged at the upper end of the jacking shaft, a jacking supporting wheel is arranged on the inner side wall of the rotary drum, the jacking supporting wheel is matched with the helical blade, and the axial direction of the jacking supporting wheel is perpendicular to the axial direction of the jacking shaft;
the second steering mechanism comprises a walking vehicle bottom, a jacking assembly and a hydraulic driving assembly, the right side wall of the second supporting leg of the second steering mechanism is connected with the hydraulic driving assembly, the hydraulic driving assembly comprises a hydraulic cylinder and a connecting rod, the front end of a piston rod of the hydraulic cylinder is connected onto the second supporting leg of the second steering mechanism, the cylinder body of the hydraulic cylinder is connected with the connecting rod, and the walking vehicle chassis of the second steering mechanism is arranged on the arc-shaped steering track.
2. The steering system of an axle erecting machine according to claim 1, wherein: the side wall of a second supporting leg of the second steering mechanism is provided with a lug groove, threaded holes are longitudinally and equidistantly formed in the lug groove, the upper portion and the lower portion of each lug are symmetrically provided with through holes, the distance between every two adjacent threaded holes in the lug groove is equal to the distance between every two through holes of each lug, a bolt penetrates through the through holes and is locked into the threaded holes, and each lug is hinged to a piston rod of the hydraulic cylinder.
3. The steering system of an axle erecting machine according to claim 1, wherein: the left part and the right part in the rotating cylinder are both provided with a jacking supporting wheel, the vertical axial distance of the two jacking supporting wheels is equal to the pitch of 1/2 spiral blades, and the two jacking supporting wheels are both positioned between two adjacent spiral blades; the jacking support wheel is internally provided with a rotating shaft, the tail part of the rotating shaft is connected with a bearing seat, and the bearing seat is fixed at the joint of the outer side wall of the rotating drum and the upper surface of the cross beam.
4. A steering system for an axle erecting machine according to claim 3, wherein: and a second bearing is connected between the rotating shaft and the bearing seat.
5. The steering system of an axle erecting machine according to claim 1, wherein: the connecting rod comprises a first connecting rod and a second connecting rod, the first connecting rod is provided with a long-strip-shaped T-shaped groove which is positioned at the left part of the first connecting rod, the right part of the second connecting rod is provided with a threaded hole, and a bolt penetrates through the T-shaped groove and penetrates into the threaded hole to be screwed; the right end of the hydraulic cylinder is hinged with the left end of the second connecting rod.
6. The steering system of an axle erecting machine according to claim 1, wherein: the top in the rotary drum is provided with an upper limit electric switch.
7. The steering system of an axle erecting machine according to claim 1, wherein: first bearings are installed at the top and the bottom of the rotary drum, the outer ring of each first bearing is fixedly connected with the rotary drum, and the inner ring of each first bearing is fixedly connected with the jacking shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020503765.8U CN211897905U (en) | 2020-04-08 | 2020-04-08 | Steering system of bridge girder erection machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020503765.8U CN211897905U (en) | 2020-04-08 | 2020-04-08 | Steering system of bridge girder erection machine |
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| Publication Number | Publication Date |
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| CN211897905U true CN211897905U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020503765.8U Active CN211897905U (en) | 2020-04-08 | 2020-04-08 | Steering system of bridge girder erection machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335180A (en) * | 2020-04-08 | 2020-06-26 | 福建省特种设备检验研究院 | Steering system of bridge girder erection machine and use method thereof |
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2020
- 2020-04-08 CN CN202020503765.8U patent/CN211897905U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335180A (en) * | 2020-04-08 | 2020-06-26 | 福建省特种设备检验研究院 | Steering system of bridge girder erection machine and use method thereof |
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