CN217148321U

CN217148321U - Main supporting leg structure of walking type self-balancing overpass bridge girder erection machine

Info

Publication number: CN217148321U
Application number: CN202221699716.1U
Authority: CN
Inventors: 王敏; 张双保; 韩国利
Original assignee: Henan Zhitian Crane Group Co ltd
Current assignee: Henan Zhitian Crane Group Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-08-09
Anticipated expiration: 2032-07-04

Abstract

A main supporting leg structure of a walking self-balancing cross-spanning bridge girder erection machine comprises supporting beams, wherein two ends of each supporting beam are fixedly provided with a bridge girder erection machine, a crane trolley is arranged above the two bridge girder erection machines, traveling mechanisms are arranged below the two ends of each supporting beam, a position adjusting mechanism is arranged between each traveling mechanism and each supporting beam and comprises a sliding rail, the bottom end of each sliding rail is provided with a sliding chute, two ends of each sliding rail are respectively provided with a vertically arranged fixing seat, an adjusting lead screw is arranged between the fixing seats, a horizontally arranged lead screw motor is fixed on the fixing seat close to the outer end of each supporting beam, and a power output shaft of each lead screw motor is fixedly connected with the adjusting lead screw in a coaxial line; threaded connection has the supporting shoe on adjusting the lead screw, and the top of supporting shoe is fixed with the slider, and the upper end sliding connection of slider is in the spout, and the bottom mounting of supporting shoe has the supporting seat, and the bottom of supporting seat is articulated with running gear through articulated seat. The utility model discloses simple structure, convenient to use.

Description

Main supporting leg structure of walking type self-balancing cross-over bridge girder erection machine

Technical Field

The utility model belongs to the technical field of hoisting equipment, especially, relate to a main leg structure of frame bridge crane is striden to walking self-balancing.

Background

The main function of the bridge girder erection machine is to lift the girder piece conveyed by the girder transport vehicle, then the girder piece is moved to a required position and then placed between two piers, the bridge girder erection machine is special equipment, the size is large, the weight is heavy, and the requirements on the control and the adjustment of each structure are high, wherein the walking type self-balancing cross-over bridge girder erection machine becomes the most widely applied bridge girder erection machine due to the convenience in use. In the process of bridge construction, as shown in the attached drawing 1 in the specification, in order to meet the requirements, a walking rail generally extends out of a cross beam 11 above a pier 1, namely, two sides of the walking rail 12 are in a suspended state, so that when the walking mechanism 21 moves to the end part of the walking rail 12, beam pieces lifted by a crane trolley 3 can be correspondingly laid at the edge of the cross beam 11, but the walking rail 12 is suspended insecure, and the overturning accident of the bridge girder erection machine is easily caused; moreover, in the construction process, the road surface of the single pier 1 is encountered, as shown in the attached drawing 2 of the specification, the cross beam 11 at the top end of the pier 1 is narrowed, the supporting beam 2 below the crane supporting leg is too wide, the traveling mechanisms 21 below the supporting beam 2 cannot move, even two traveling mechanisms 21 fall out of two ends of the traveling track 12, a bridge girder erection machine with a smaller model needs to be replaced, and the construction is troublesome, so that the main supporting leg of the existing walking type self-balancing cross-bridge girder erection machine cannot be suitable for bridge laying with different spans.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem that the bridge of striding bridging machine owner landing leg can not be applicable to different spans is laid to current walking self-balancing, a main leg structure of striding bridging machine is crossed to walking self-balancing is provided, a supporting beam including the level setting, a supporting beam plays the supporting role, a supporting beam's both ends all can be dismantled through the ring flange and be fixed with the bridging machine girder, two bridging machine girder symmetries set up, the cart walking track has all been laid on the top of two bridging machine girders, the top of two bridging machine girders is equipped with the trolley, the trolley assembly is on the cart walking track on bridging machine girder. Supporting the below at a beam both ends all is equipped with running gear, running gear includes the walking wheel case that the level set up, the top of walking wheel case is articulated with the fixing base through articulated seat, the rotatable walking wheel that is equipped with in the walking wheel case, the outside of walking wheel case is equipped with the walking motor, the power output shaft and the walking wheel transmission of walking motor are connected, the walking motor drives the walking wheel and rotates, the walking track removal of walking wheel along laying on the crossbeam drives the bridge girder erection machine along the walking track removal. A position adjusting mechanism is arranged between the travelling mechanism and the supporting beam, the two position adjusting mechanisms are symmetrically arranged, the position adjusting mechanism comprises a slide rail which is horizontally arranged, the slide rail plays a role of guiding and supporting, the top end of the slide rail is fixed with the supporting beam, the bottom end of the slide rail is provided with a chute which is horizontally arranged, two ends of the slide rail are respectively provided with a fixing seat which is vertically arranged, the fixing seats play a role of supporting, bearings are respectively arranged in the fixing seats, the fixing seats are respectively fixed on the supporting beam, an adjusting screw which is horizontally arranged is arranged between the two fixing seats, two ends of the adjusting screw can be rotatably assembled on the bearings in the fixing seats, a screw motor which is horizontally arranged is fixed on the fixing seat close to the outer end of the supporting beam, and a power output shaft of the screw motor is coaxially and fixedly connected with the adjusting screw; threaded connection has a plurality of supporting shoe on the adjusting screw, the supporting shoe plays supporting role, the top of supporting shoe is fixed with the slider, the upper end sliding connection of slider is in the spout, the bottom mounting of supporting shoe has the supporting seat, the bottom of supporting seat is articulated with running gear through articulated seat, start two lead screw motors simultaneously, two lead screw motors rotate clockwise, the supporting shoe is along adjusting the lead screw towards a supporting beam intermediate movement, the supporting shoe drives supporting seat and walking wheel case and removes, the distance of a supporting beam both ends running gear has been adjusted, make the distance between two running gear narrow down, two lead screw motors of counter-clockwise rotation, two lead screw motors drive adjusting screw counter-clockwise rotation, distance grow between two running gear.

Preferably, the number of the supporting blocks is two, and the two supporting blocks are symmetrically arranged.

Preferably, the top end of the sliding block is contacted with and tightly propped against the bottom of the sliding groove.

Preferably, the lead screw motor is a speed reduction motor.

Preferably, the two ends of the adjusting screw rod are provided with limiting blocks.

The scheme has the following advantages:

the displacement adjusting mechanism is arranged, the adjusting screw rod is driven to rotate through the screw rod motor, and the adjusting screw rod drives the supporting block to move along the adjusting screw rod, so that the distance between the two walking mechanisms is adjusted, the two walking mechanisms can be suitable for laying bridges with different spans, and the use is convenient; the arrangement of the sliding rail and the sliding groove plays a role in guiding and supporting, so that the adjustment of the walking mechanism is facilitated, and the stability is improved; the limiting block is arranged to limit the supporting block, so that the supporting block is prevented from being separated from the adjusting screw rod; the traveling mechanism is arranged, and the traveling wheels move along the traveling track under the driving of the traveling motor to drive the bridge girder erection machine to move.

Drawings

FIG. 1 is a schematic diagram of a double-pier walking track suspension structure;

FIG. 2 is a schematic structural view of a single pier traveling track;

FIG. 3 is a schematic structural view of the present invention;

fig. 4 is an enlarged schematic view of a portion a of fig. 3.

Reference numerals: 1. a bridge pier; 2. a support beam; 3. a position adjustment mechanism; 11. a cross beam; 12. a traveling rail; 21. a traveling mechanism; 211. a traveling wheel box; 212. a traveling wheel; 213. a traveling motor; 22. a main beam of the bridge erecting machine; 221. a flange plate; 23. a trolley; 31. a slide rail; 311. a chute; 32. a fixed seat; 321. a bearing; 33. adjusting the lead screw; 331. a limiting block; 34. a lead screw motor; 35. a support block; 351. a slider; 36. a supporting seat; 37. a hinged seat.

Detailed Description

As shown in fig. 1-4, a main support leg structure of a walking self-balancing cross-over bridge girder erection machine comprises a support beam 2 horizontally arranged, the support beam 2 plays a supporting role, two ends of the support beam 2 are detachably fixed with bridge girder erection machines 22 through flange plates 221, the two bridge girder erection machines 22 are symmetrically arranged, cart walking tracks are laid on the top ends of the two bridge girder erection machines 22, a trolley 23 is arranged above the two bridge girder erection machines 22, and the trolley 23 is assembled on the cart walking tracks on the bridge girder erection machines 22. The below at 2 both ends of supporting beam all is equipped with running gear 21, running gear 21 includes the walking wheel case 211 that the level set up, the top of walking wheel case 211 is articulated with fixing base 32 through articulated seat 37, rotatable the being equipped with walking wheel 212 in the walking wheel case 211, the outside of walking wheel case 211 is equipped with walking motor 213, walking motor 213's power output shaft and walking wheel 212 transmission are connected, walking motor 213 drives walking wheel 212 and rotates, walking wheel 212 removes along the walking track 12 of laying on crossbeam 11, it removes along walking track 12 to drive the bridge girder erection machine. A position adjusting mechanism 3 is arranged between the walking mechanism 21 and the supporting beam 2, the two position adjusting mechanisms 3 are symmetrically arranged, the position adjusting mechanism 3 comprises a slide rail 31 which is horizontally arranged, the slide rail 31 plays a role of guiding and supporting, the top end of the slide rail 31 is fixed with the supporting beam 2, a sliding groove 311 which is horizontally arranged is formed in the bottom end of the slide rail 31, fixing seats 32 which are vertically arranged are arranged at two ends of the slide rail 31, the fixing seats 32 play a role of supporting, bearings 321 are arranged in the fixing seats 32, the fixing seats 32 are fixed on the supporting beam 2, a horizontally arranged adjusting screw 33 is arranged between the two fixing seats 32, two ends of the adjusting screw 33 can be rotatably assembled on the bearings 321 in the fixing seats 32, a horizontally arranged screw motor 34 is fixed on the fixing seat 32 close to the outer end of the supporting beam 2, and a power output shaft of the screw motor 34 is fixedly connected with the adjusting screw 33 coaxially; threaded connection has a plurality of supporting shoe 35 on adjusting screw 33, supporting shoe 35 plays the supporting role, the top of supporting shoe 35 is fixed with slider 351, slider 351's upper end sliding connection is in spout 311, the bottom mounting of supporting shoe 35 has supporting seat 36, the bottom of supporting seat 36 is articulated with running gear 21 through articulated seat 37, start two lead screw motor 34 simultaneously, two lead screw motor 34 clockwise, supporting shoe 35 moves towards a supporting beam 2 centre along adjusting screw 33, supporting shoe 35 drives supporting seat 36 and running gear case 211 and removes, the distance of a supporting beam 2 both ends running gear 21 has been adjusted, make the distance between two running gear 21 narrow down, two lead screw motor 34 of anticlockwise rotation, two lead screw motor 34 drive adjusting screw 33 anticlockwise rotations, the distance between two running gear 21 grow.

Preferably, two support blocks 35 are provided, and the two support blocks 35 are symmetrically provided.

Preferably, the top end of the slider 351 contacts and abuts against the bottom of the slide slot 311.

Preferably, the lead screw motor 34 is a reduction motor.

Preferably, both ends of the adjusting screw 33 are provided with a limiting block 331.

The use process comprises the following steps:

the utility model discloses when using, lay crossbeam 11 on pier 1, running gear 21 assembles on walking track 12 on crossbeam 11, according to the construction demand, start two lead screw motors 34 respectively, the power output shaft of two lead screw motors 34 all rotates clockwise, lead screw motor 34 drives adjusting screw 33 and rotates clockwise, supporting shoe 35 on adjusting screw 33 moves towards the middle of a supporting beam 2, two supporting seats 36 move in opposite directions, make the distance between two running gear 21 reduce, when supporting shoe 35 moves, slider 351 moves along spout 311, the top of slider 351 contacts with slide rail 31, and play the supporting role; when the distance between the two traveling mechanisms 21 needs to be increased, the two lead screw motors 34 are started simultaneously, each lead screw motor 34 of the chain drives the two adjusting lead screws 33 to synchronously rotate anticlockwise, and the two supporting seats 36 are synchronously back to move, so that the distance between the two traveling mechanisms 21 is increased.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. The utility model provides a main landing leg structure of bridging machine is striden to walking self-balancing, includes the supporting beam that the level set up, and a supporting beam's both ends are all fixed with the bridging machine girder through the ring flange, and two bridging machine girder symmetries set up, and the top of two bridging machine girders is equipped with the trolley, and the trolley assembly is on the cart walking track on the bridging machine girder, its characterized in that: the lower part of both ends of a supporting beam is provided with a walking mechanism, a position adjusting mechanism is arranged between the walking mechanism and the supporting beam, the two position adjusting mechanisms are symmetrically arranged, the position adjusting mechanism comprises a slide rail which is horizontally arranged, the top end of the slide rail is fixed with the supporting beam, the bottom end of the slide rail is provided with a slide groove which is horizontally arranged, both ends of the slide rail are provided with a fixing seat which is vertically arranged, the fixing seats are fixed on the supporting beam, an adjusting lead screw which is horizontally arranged is arranged between the two fixing seats, both ends of the adjusting lead screw can be rotatably assembled on the fixing seat, a lead screw motor which is horizontally arranged is fixed on the fixing seat close to the outer end of the supporting beam, and a power output shaft of the lead screw motor is fixedly connected with the adjusting lead screw coaxially; threaded connection has a plurality of supporting shoe on adjusting the lead screw, and the top of supporting shoe is fixed with the slider, and the upper end sliding connection of slider is in the spout, and the bottom mounting of supporting shoe has the supporting seat, and the bottom of supporting seat is articulated with running gear through articulated seat.

2. The main leg structure of a walking self-balancing overpass bridge crane according to claim 1, wherein: the walking mechanism comprises a walking wheel box which is horizontally arranged, the top end of the walking wheel box is hinged with a fixed seat through a hinged seat, walking wheels are rotatably assembled in the walking wheel box, a walking motor is arranged on the outer side of the walking wheel box, and a power output shaft of the walking motor is in transmission connection with the walking wheels.

3. The main leg structure of a walking self-balancing overpass bridge crane according to claim 1, wherein: the supporting shoe sets up two, and two supporting shoes symmetry sets up.

4. The main leg structure of a walking self-balancing overpass bridge crane according to claim 3, wherein: the top end of the sliding block is contacted and tightly propped against the bottom of the sliding groove.

5. The main leg structure of a walking self-balancing overpass bridge crane according to claim 1, wherein: the screw motor is a speed reducing motor.

6. The main leg structure of a walking self-balancing overpass bridge crane according to claim 1, wherein: the two ends of the adjusting screw rod are both provided with limiting blocks.