CN117536121B

CN117536121B - Hanging beam positioning mechanism, adjusting method thereof and bridge deck crane

Info

Publication number: CN117536121B
Application number: CN202311621727.7A
Authority: CN
Inventors: 金鹤; 吴玉贤; 李剑; 何畅; 董春光; 汪乐; 张春木; 李昆星; 胡博识; 肖粤; 黄士欢
Original assignee: Poly Changda Engineering Co Ltd
Current assignee: Poly Changda Engineering Co Ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-05-14
Anticipated expiration: 2043-11-28
Also published as: CN117536121A

Abstract

The application relates to a hanging beam positioning mechanism, an adjusting method thereof and a bridge deck crane. The lifting beam positioning mechanism comprises a beam lifting tool, a connecting assembly and a positioning assembly, two lifting lug units of the beam lifting tool are connected to the beam section to be erected, the beam section to be erected is lifted to a preset height by a winch, and the inclination direction of the beam section to be erected is judged. When the adjustment is needed, the control positioning driving piece drives the positioning wheel to drive the positioning section to synchronously rotate, so that the first connecting section is lengthened or shortened, and the second connecting section is shortened or lengthened. The length of extension or shortening of the first connecting section and the second connecting section can be controlled by controlling the rotation angle of the positioning wheel, so that the rotation angle of the girder section to be erected is controlled. When adjusting and waiting to put forward the girder section rotation, drive through the positioning subassembly and connect the relative hanging beam seat rotation realization of hanging beam, reduce the wearing and tearing consumption that traditional mode sliding friction brought, be convenient for realize angle modulation, improve hanging beam positioning mechanism's life.

Description

Hanging beam positioning mechanism, adjusting method thereof and bridge deck crane

Technical Field

The application relates to the technical field of bridge construction, in particular to a hanging beam positioning mechanism, an adjusting method thereof and a bridge deck crane.

Background

In bridge girder steel construction, hoist and mount are usually adopted to cantilever assembly's method, and then effectively realize waiting to frame the butt joint installation of roof beam section and girder section that has already frame. If the matched installation and control of the beam section to be erected and the erected beam section are not in place, the linear errors of the erected beam section are accumulated, and the correction is difficult in the follow-up construction measures. In the practical application process, the position difference exists between the lifting device mechanism and the positioning bracket on the beam section to be erected, or the inclination exists on the surface of the beam section to be erected, so that the setting angle of the beam section to be erected needs to be adjusted through the lifting device mechanism, and the beam section to be erected is matched with the beam section to be erected.

In a traditional bridge deck crane, when the setting angle of a girder section to be erected is adjusted, the position of a lifting point is often changed. The hydraulic cylinder on the lifting appliance mechanism pushes the sliding block of the lifting appliance mechanism connected with the lifting cable to move on the lifting appliance main beam, so that the position of a lifting point is changed, and the setting angle of the beam section to be adjusted is adjusted.

However, since the weight of the girder section to be erected is often more than hundred tons, the pressure between the slider and the girder of the hanger matches the weight of the girder section to be erected, and thus when the slider is pushed to slide on the girder of the hanger, a large friction force needs to be overcome, and the abrasion between the slider and the girder of the hanger is serious.

Disclosure of Invention

In view of the above, it is necessary to provide a hanging beam positioning mechanism capable of reducing wear between a hanging beam and a slider during angle adjustment, an adjusting method thereof, and a bridge deck crane.

The lifting beam positioning mechanism comprises a beam lifting appliance, a connecting assembly and a positioning assembly, wherein the beam lifting appliance comprises a lifting appliance main beam and two lifting lug units, and the two lifting lug units are arranged on the lifting appliance main beam at intervals; the connecting assembly comprises a connecting hanging beam, a connecting seat and a hanging beam seat, wherein the hanging beam seat is arranged on the main girder of the lifting appliance and positioned between the two lifting lug units, the connecting seat is positioned above the hanging beam seat and is arranged at intervals with the hanging beam seat, one end of the connecting hanging beam is connected to the connecting seat, and the other end of the connecting hanging beam is rotatably connected to the hanging beam seat; the positioning assembly comprises a positioning pull belt, a positioning wheel and a positioning driving piece, wherein the positioning wheel is rotatably arranged on the connecting seat, two ends of the positioning pull belt are connected to the lifting appliance main beam and respectively positioned between the connecting lifting beam and the two lifting lug units, the positioning pull belt is spanned on the positioning wheel, the contact part of the positioning pull belt and the positioning wheel is a positioning section, the two parts of the positioning pull belt between the positioning wheel and the lifting appliance main beam are respectively a first connecting section and a second connecting section, and the positioning driving piece is controlled to drive the positioning wheel to drive the positioning section to synchronously rotate forwards or reversely so as to adjust the length of the first connecting section and the second connecting section.

In one embodiment, the positioning wheel is provided with a tensioning protrusion, the tensioning protrusion is arranged on the outer edge of the positioning wheel, and in an initial state, the tensioning protrusion is located below the positioning section and is in contact with the connection position of the positioning section and the first connection section and the connection position of the positioning section and the second connection section.

In one embodiment, the positioning wheel is provided with a plurality of clamping protrusions, the plurality of clamping protrusions are arranged at intervals around the rotation axis of the positioning wheel, the positioning pull belt is provided with clamping grooves, the number of the clamping grooves is consistent with that of the clamping protrusions, and each clamping protrusion can correspondingly penetrate through one clamping groove.

In one embodiment, a rotating cavity is formed in the connecting seat, the positioning wheel is rotatably arranged in the rotating cavity, the positioning section is positioned in the rotating cavity, communication holes communicated with the rotating cavity are formed in the two side walls of the connecting seat facing to the two lifting lug units, the first connecting section is penetrated out of the communication holes on one side and connected onto the lifting appliance girder, and the second connecting section is penetrated out of the communication holes on the other side and connected onto the lifting appliance girder.

In one embodiment, one end of the connecting hanging beam is fixed on the connecting seat, and the connecting seat is used for connecting a sling or the connecting hanging beam is used for connecting the sling.

A method of adjusting a lifting beam positioning mechanism, the method of adjusting a lifting beam positioning mechanism being applied to a lifting beam positioning mechanism as described above, the method of adjusting comprising:

lifting the girder section to be erected to a preset height;

judging the inclination direction of the beam section to be erected at a preset height;

According to the inclination direction, the control positioning driving piece drives the positioning wheel to drive the positioning section to synchronously rotate forward or reversely so as to adjust the lengths of the first connecting section and the second connecting section of the positioning pull belt.

In one embodiment, the lifting the girder segment to be erected to a preset height includes:

Acquiring an alignment height of the edge of the erected beam segment, and acquiring a first splicing height of a first position and a second splicing height of a second position of the beam segment to be erected according to the alignment height; wherein the spacing at the first location and the framed girder segment edge is different from the spacing at the second location and the framed girder segment edge;

And hoisting the beam section to be erected, and acquiring a first real-time height of a first position and a second real-time height of a second position of the beam section to be erected in real time until the first real-time height is equal to the first splicing height or the second real-time height is equal to the second splicing height.

In one embodiment, the determining the inclination direction of the girder segment to be erected at the preset height includes:

If the first real-time height is equal to the first splicing height, the side, away from the erected beam segment, of the beam segment to be erected is inclined downwards; if the second real-time height is equal to the second splicing height, the side, close to the erected beam segment, of the beam segment to be erected is inclined downwards; wherein the first position is proximate to the erected beam segment and the second position is distal to the erected beam segment.

In one embodiment, according to the inclination direction, the controlling the positioning driving member to drive the positioning wheel to drive the positioning section to rotate forward or backward synchronously so as to adjust the lengths of the first connecting section and the second connecting section of the positioning pull belt includes:

If the first real-time height is equal to the first splicing height, controlling the positioning driving piece to drive the positioning wheel to rotate so as to enable the first connecting section to be elongated and the second connecting section to be shortened, and adjusting the lifting height of the girder section to be erected in real time to keep the first real-time height equal to the first splicing height until the second real-time height is equal to the second splicing height;

If the second real-time height is equal to the second splicing height, controlling the positioning driving piece to drive the positioning wheel to rotate so as to shorten the first connecting section and lengthen the second connecting section, and adjusting the lifting height of the girder section to be erected in real time to keep the second real-time height equal to the second splicing height until the first real-time height is equal to the first splicing height; wherein the first connection section is proximate to the erected beam segment and the second connection section is distal to the erected beam segment.

According to the hanging beam positioning mechanism and the adjusting method thereof, when the hanging beam positioning mechanism is used, the two lifting lug units of the beam hanger are connected to the beam section to be erected, and the beam section to be erected can be lifted to a preset height by the aid of the winch through the connecting assembly and the beam hanger. Judging the inclination direction of the girder section to be erected at a preset height, when the girder section to be erected rotates relative to the girder section to be erected, for example, if one side of the first connecting section, which is close to the positioning pull belt, is required to incline downwards, controlling the positioning driving piece to drive the positioning wheel to drive the positioning section to synchronously rotate, so that the first connecting section stretches, the second connecting section shortens, and one side of the first connecting section can be adjusted to incline downwards, and one side, which is close to the first connecting section, of the girder section to be erected is adjusted to rotate downwards. When the beam section to be erected needs to be regulated to rotate in the opposite direction, the positioning driving piece is controlled to drive the positioning wheel to drive the positioning section to rotate in the opposite direction. The length of extension or shortening of the first connecting section and the second connecting section can be controlled by controlling the rotation angle of the positioning wheel, and then the rotation angle of the beam section to be erected can be controlled. According to the hanging beam positioning mechanism, the other end of the connecting hanging beam is rotatably connected with the hanging beam seat, when the hanging beam section to be erected is adjusted to rotate, the traditional sliding friction is changed to adjust the position of the hanging point, namely the rotating friction between the connecting hanging beam and the hanging beam seat is changed, so that the abrasion consumption caused by the sliding friction can be effectively reduced, the angle adjustment is more convenient to realize, and the service life of the hanging beam positioning mechanism is prolonged.

The bridge deck crane comprises a crane main body and the lifting beam positioning mechanism, wherein the crane main body comprises a top operation platform, an inclined stay bar and a rear pulling assembly, the top operation platform is arranged on the rear pulling assembly, one end of the inclined stay bar is connected with the top operation platform, the other end of the inclined stay bar is connected with the rear pulling assembly, and the inclined stay bar is positioned below the top operation platform and is obliquely arranged relative to the top operation platform; the lifting beam positioning mechanism further comprises a winch, a sling and a sling displacement member, wherein the winch is arranged on the top operation platform, the sling displacement member is controlled to drive the winch to move, one end of the sling is connected with the winch, the other end of the sling is connected with the connecting lifting beam or the connecting seat, so that the beam sling is positioned below the diagonal brace, and the winch is controlled to be used for winding and unwinding the sling.

In one embodiment, the hoisting control mechanism comprises an alignment distance sensor, a first distance sensor, a second distance sensor and a hoisting controller, wherein the alignment distance sensor is arranged below the diagonal brace, the alignment distance sensor is positioned at the edge of the braced girder section, the first distance sensor and the second distance sensor are both arranged below the diagonal brace, the first distance sensor and the second distance sensor are both opposite to the girder section to be braced, and the distances between the first distance sensor and the edge of the braced girder section are different; the alignment distance sensor, the first distance sensor and the second distance sensor are all electrically connected to the hoisting controller; the alignment distance sensor is used for acquiring the alignment height of the edge of the erected beam segment, the first distance sensor is used for acquiring the first real-time height of the first position of the beam segment to be erected, and the second distance sensor is used for acquiring the second real-time height of the second position of the beam segment to be erected; the hoist controller is adapted to perform the steps of implementing the method as described above.

Above-mentioned bridge floor loop wheel machine, diagonal brace and back draw the subassembly to provide and support installation space, diagonal brace slope setting to make the roof beam hoist be located the below of diagonal brace, for the hoist and mount of roof beam hoist treat the frame roof beam section and provide operating space, and top operation platform can be convenient for realize the installation of hanging beam positioning mechanism, for the operation of hanging beam positioning mechanism provides operating space. The hoist is controlled to receive and release the hoist cable, can adjust the lifting height position of the beam section to be framed that the beam hoist hoisted, and hoist displacement piece is controlled to drive the hoist to remove, can adjust the interval of beam section to be framed relative to the beam section that has framed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Moreover, the figures are not drawn to a 1:1 scale, and the relative sizes of various elements are merely exemplary in the figures, and are not necessarily drawn to true scale. In the drawings:

Fig. 1 is a front view of a deck crane in an embodiment.

Fig. 2 is a side view of the deck crane shown in fig. 1.

Fig. 3 is a front view of the hanging beam positioning mechanism of fig. 1.

Fig. 4 is a front view of the hanging beam positioning mechanism shown in fig. 3 in use.

Fig. 5 is a partial cross-sectional view of the coupling seat and positioning assembly of fig. 3.

Fig. 6 is a partial side view of the lifting beam positioning mechanism shown in fig. 3 with the lifting lug unit omitted.

Reference numerals illustrate:

Bridge deck crane 10; a crane main body 100; a top operating platform 110; diagonal brace 120; a pull-back assembly 130; a hanging beam positioning mechanism 200; a beam hanger 210; a spreader main beam 212; a lifting lug unit 214; a hoist 220; slings 230; a spreader displacement member 240; a connection assembly 250; a connecting hanging beam 252; a connecting base 254; a rotation chamber 2542; communication hole 2544; a hanging beam seat 256; a positioning component 260; a positioning pull strap 262; a positioning section 2621; a first connection section 2622; a second connection section 2623; a detent 2624; a positioning wheel 264; tensioning boss 266; a detent projection 268; alignment distance sensor 310; a first distance sensor 320; a second distance sensor 330; a beam section 20 to be framed; the beam section 30 has been erected.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

Referring to fig. 1 and 2, a bridge deck crane 10 according to an embodiment of the present application at least facilitates position adjustment of a girder segment 20 to be erected relative to an erected girder segment 30, and increases service life.

Specifically, the deck crane 10 includes a crane body 100 and a crane beam positioning mechanism 200, and the crane beam positioning mechanism 200 is provided on one side of the crane body 100. The crane main body 100 is erected on the erected beam segment 30, the crane beam positioning mechanism 200 is connected with the beam segment 20 to be erected, and the crane beam positioning mechanism 200 can hoist the beam segment 20 to be erected towards the erected beam segment 30.

In this embodiment, the crane main body 100 includes a top operation platform 110, a diagonal brace 120 and a rear pull assembly 130, the top operation platform 110 is disposed on the rear pull assembly 130, one end of the diagonal brace 120 is connected to the top operation platform 110, the other end is connected to the rear pull assembly 130, and the diagonal brace 120 is disposed below the top operation platform 110 and is inclined with respect to the top operation platform 110. The hanging beam positioning mechanism 200 is disposed below the diagonal brace 120.

In one embodiment, the hanging beam positioning mechanism 200 includes a beam hanger 210, a winch 220, a sling 230 and a hanger displacement member 240, wherein the winch 220 is disposed on the top operation platform 110, the hanger displacement member 240 is controlled to drive the winch 220 to move, one end of the sling 230 is connected to the winch 220, and the other end is connected to the beam hanger 210, so that the beam hanger 210 is located under the diagonal brace 120, and the winch 220 is controlled to retract the sling 230.

When in use, the diagonal brace 120 and the back-pull assembly 130 provide a supporting installation space, the diagonal brace 120 is obliquely arranged, so that the beam lifting tool 210 is positioned below the diagonal brace 120, an operation space is provided for lifting the beam section 20 to be lifted by the beam lifting tool 210, and the top operation platform 110 can facilitate the installation of the hanging beam positioning mechanism 200, and an operation space is provided for the operation and running of the hanging beam positioning mechanism 200. The hoist 220 is controlled to retract the sling 230, the lifting height position of the beam section 20 to be erected, which is hoisted by the beam hoist 210, can be adjusted, and the hoist displacement member 240 is controlled to drive the hoist 220 to move, so that the distance between the beam section 20 to be erected and the erected beam section 30 can be adjusted.

In one embodiment, the number of the diagonal braces 120 is two, the two diagonal braces 120 are disposed at opposite intervals, the number of the hanging beam positioning mechanisms 200 is two, the two hanging beam positioning mechanisms 200 are disposed at opposite intervals, and each hanging beam positioning mechanism 200 is disposed at a diagonal brace 120. By arranging two diagonal braces 120 and two hanging beam positioning mechanisms 200, the uniformity of stress in the process of hanging the girder segment 20 to be erected can be improved.

In one embodiment, the bridge deck crane 10 further comprises a hoisting control mechanism, the hoisting control mechanism comprises an alignment distance sensor 310, a first distance sensor 320, a second distance sensor 330 and a hoisting controller, the alignment distance sensor 310 is arranged below the diagonal brace 120, the alignment distance sensor 310 is positioned at the edge of the braced beam section 30, the first distance sensor 320 and the second distance sensor 330 are arranged below the diagonal brace 120, the first distance sensor 320 and the second distance sensor 330 are positioned at the edge of the braced beam section 20, and the distances between the first distance sensor 320 and the second distance sensor 330 and the edge of the braced beam section 30 are different; the alignment distance sensor 310, the first distance sensor 320 and the second distance sensor 330 are all electrically connected to the hoisting controller; the alignment distance sensor 310 is used to obtain an alignment height at the edge of the erected beam segment 30, the first distance sensor 320 is used to obtain a first real-time height of a first position of the beam segment 20 to be erected, and the second distance sensor 330 is used to obtain a second real-time height of a second position of the beam segment 20 to be erected.

In the construction of the bridge deck crane 10, the beam hanger 210 is connected to the beam section 20 to be erected, the alignment height of the edge of the erected beam section 30 is obtained through the alignment distance sensor 310, and the first splicing height of the first position and the second splicing height of the second position of the beam section 20 to be erected are obtained according to the alignment height. Then the beam section 20 to be erected is lifted, and the first real-time height corresponding to the first position of the beam section 20 to be erected is obtained in real time through the first distance sensor 320, and the second real-time height corresponding to the second position of the beam section 20 to be erected is obtained in real time through the second distance sensor 330 until the first real-time height is equal to the first splicing height or the second real-time height is equal to the second splicing height, and at the moment, the height position of the beam section 20 to be erected reaches the preset height and is consistent with the height of the beam section 30 to be erected. Because the distances between the first distance sensor 320 and the second distance sensor 330 and the edge of the erected beam segment 30 are different, the distances between the first position and the second position and the edge of the erected beam segment 30 are different, and if the real-time height of one of the first position and the second position reaches the splicing position and the real-time height of the other position does not reach the splicing position, the deflection angle of the to-be-erected beam segment 20 is proved. It is therefore necessary to adjust the rotation of the beam section 20 to be erected by means of the lifting beam positioning mechanism 200 until the first real-time height is equal to the first splice height and the second real-time height is equal to the first splice height. The first splice height and the second splice height are derived from the alignment height at the edge of the erected beam segment 30, so that it can be determined that the to-be-erected beam segment 20 has now been aligned in height and yaw angle with the erected beam segment 30.

The bridge deck crane 10 does not need to set a reference mark or a butt joint on the girder section 20 to be erected before hoisting, the height position and the deflection angle of the girder section 20 to be erected are obtained and adjusted after real-time monitoring and judgment by the first distance sensor 320 and the second distance sensor 330, the influence of the precision of the reference mark or the butt joint and the precision of the installation position on the alignment splicing precision does not exist, and the bridge deck crane 10 does not need to process the girder section 20 to be erected in advance, so that the complexity of the alignment splicing operation can be effectively reduced.

In one embodiment, the first distance sensor 320 and the second distance sensor 330 are respectively disposed on the two diagonal braces 120. The number of the alignment distance sensors 310 is two, and the two alignment distance sensors 310 are respectively arranged at the same height position of the two diagonal braces 120; one alignment distance sensor 310 is used to obtain a first splice height of the edge of the erected beam segment 30 in alignment with the first position of the beam segment 20 to be erected, and the other alignment distance sensor 310 is used to obtain a second splice height of the edge of the erected beam segment 30 in alignment with the second position of the beam segment 20 to be erected. The first distance sensor 320 and the second distance sensor 330 are respectively arranged on the two diagonal braces 120, and the splicing heights of the two positions are correspondingly obtained through the two alignment distance sensors 310, so that the accuracy of detection and identification is improved, and the accuracy of adjustment is further improved.

In one embodiment, the alignment distance sensor 310, the first distance sensor 320 and the second distance sensor 330 may be one of an infrared distance sensor, an ultrasonic distance sensor, a laser distance sensor, etc. The distance sensor 310, the first distance sensor 320 and the second distance sensor 330 may be the same distance measuring sensor or different distance measuring sensors, so long as the purpose of real-time distance measurement can be achieved.

Referring to fig. 3 to 5, in one embodiment, the lifting beam positioning mechanism 200 includes a beam lifting tool 210, a connection assembly 250, and a positioning assembly 260, where the beam lifting tool 210 includes a lifting tool main beam 212 and two lifting lug units 214, and the two lifting lug units 214 are disposed on the lifting tool main beam 212 at intervals. The connection assembly 250 includes a connection hanging beam 252, a connection seat 254 and a hanging beam seat 256, the hanging beam seat 256 is disposed on the hanger main beam 212 and between the two lifting lug units 214, the connection seat 254 is disposed above the hanging beam seat 256 and is spaced from the hanging beam seat 256, one end of the connection hanging beam 252 is connected to the connection seat 254, and the other end is rotatably connected to the hanging beam seat 256. The positioning assembly 260 comprises a positioning pull belt 262, a positioning wheel 264 and a positioning driving piece (not shown), the positioning wheel 264 is rotatably arranged on the connecting seat 254, both ends of the positioning pull belt 262 are connected on the lifting appliance main beam 212 and respectively positioned between the connecting lifting beam 252 and the two lifting lug units 214, and the positioning pull belt 262 is spanned on the positioning wheel 264. The contact portion of the positioning pull belt 262 and the positioning wheel 264 is a positioning section 2621, two portions of the positioning pull belt 262 between the positioning wheel 264 and the main beam 212 of the lifting tool are a first connecting section 2622 and a second connecting section 2623, and the positioning driving member is controlled to drive the positioning wheel 264 to drive the positioning section 2621 to rotate forward or reverse synchronously, so as to adjust the lengths of the first connecting section 2622 and the second connecting section 2623.

In this embodiment, the first connection segment 2622 is proximate to the erected beam segment 30 and the second connection segment 2623 is distal to the erected beam segment 30.

In use, both lifting lug units 214 of the beam hanger 210 are connected to the beam section 20 to be erected, and the beam section 20 to be erected can be lifted to a preset height by means of the winch 220 and the beam hanger 210 through the connection assembly 250. Judging that the beam section 20 to be erected is in the inclination direction of the preset height, when the beam section 20 to be erected needs to be adjusted to rotate relative to the erected beam section 30, for example, if one side of the first connecting section 2622, which is close to the positioning pull belt 262, is required to incline downwards, the positioning driving piece is controlled to drive the positioning wheel 264 to drive the positioning section 2621 to rotate synchronously, so that the first connecting section 2622 is extended, the second connecting section 2623 is shortened, one side of the first connecting section 2622 can be adjusted to incline downwards, and one side of the beam section 20 to be erected, which is close to the first connecting section 2622, is adjusted to rotate downwards. When the beam section 20 to be erected needs to be adjusted to rotate in the opposite direction, the positioning driving piece is controlled to drive the positioning wheel 264 to drive the positioning section 2621 to rotate in the opposite direction. By controlling the rotation angle of the positioning wheel 264, the length of the first connecting section 2622 and the second connecting section 2623 can be controlled to be extended or shortened, and thus the rotation angle of the girder section 20 to be erected can be controlled. According to the hanging beam positioning mechanism 200, as the other end of the connecting hanging beam 252 is rotatably connected with the hanging beam seat 256, when the to-be-supported beam section 20 is adjusted to rotate, the traditional sliding friction adjusting hanging point position is changed into rotating friction between the connecting hanging beam 252 and the hanging beam seat 256, so that abrasion consumption caused by sliding friction can be effectively reduced, angle adjustment is more convenient to realize, and the service life of the hanging beam positioning mechanism 200 is prolonged.

As shown in fig. 5, in one embodiment, the positioning wheel 264 is provided with a tensioning protrusion 266, the tensioning protrusion 266 is disposed on the outer edge of the positioning wheel 264, and in the initial state, the tensioning protrusion 266 is located below the positioning section 2621 and contacts with the connection position of the positioning section 2621 and the first connection section 2622 and the connection position of the positioning section 2621 and the second connection section 2623. In the initial state, the tensioning projection 266 is not located between the positioning pull belt 262 and the positioning wheel 264, i.e., the positioning wheel 264 does not exert a tensioning effect on the positioning pull belt 262. Since the tightening tab 266 just contacts the first connecting section 2622 and the second connecting section 2623 with the positioning section 2621, the tightening tab 266 can enter between the positioning pull strap 262 and the positioning wheel 264 to tighten the positioning pull strap 262 as long as the positioning wheel 264 rotates. The tension between the tensioned first connecting section 2622 and the second connecting section 2623 of the positioning pull belt 262 and the hanger main beam 212 can be increased, and then the tension applied by the hanger main beam section 20 on the hanger main beam 212 can be shared by the positioning pull belt 262, so that the tension between the connecting hanging beam 252 and the hanging beam seat 256 is reduced, the rotating friction between the connecting hanging beam 252 and the hanging beam seat 256 can be reduced, the rotation of the connecting hanging beam 252 relative to the hanging beam seat 256 is facilitated, the adjustment of the setting angle of the hanger main beam 212 is facilitated, and the adjustment of the inclination angle of the standby beam section is facilitated.

In this embodiment, the positioning wheel 264 is provided with a plurality of positioning protrusions 268, the plurality of positioning protrusions 268 are spaced around the rotation axis of the positioning wheel 264, the positioning pull belt 262 is provided with positioning grooves 2624, the number of the positioning grooves 2624 is consistent with that of the positioning protrusions 268, and each positioning protrusion 268 can correspondingly penetrate into one positioning groove 2624. The positioning protrusions 268 are arranged in the positioning grooves 2624 in a penetrating manner, so that the positioning segments 2621 are driven to synchronously rotate when the positioning wheel 264 rotates. When the uppermost position of the positioning wheel 264 is rotated in the direction of the first connection section 2622, the positioning section 2621 connected to the first connection section 2622 is separated from the positioning wheel 264 to increase the length of the first connection section 2622, and the second connection section 2623 contacts the positioning wheel 264 to become the positioning section 2621 to shorten the length of the second connection section 2623.

In another embodiment, the positioning pull belt 262 includes two sections, one section includes a first connecting section 2622 and a portion of the positioning section 2621, the other section includes a second connecting section 2623 and another portion of the positioning section 2621, and the ends of the positioning sections 2621 of the two sections of the positioning pull belt 262 are fixed at the uppermost portion of the positioning wheel 264. When the uppermost position of the positioning wheel 264 is rotated toward the first connecting section 2622, a part of the positioning section 2621 on one section is separated from the positioning wheel 264 to increase the length of the first connecting section 2622, and a part of the second connecting section 2623 on the other section is contacted with the positioning wheel 264 to become the positioning section 2621. In other embodiments, the connection between the positioning pull belt 262 and the positioning wheel 264 may be other, as long as the first connection section 2622 and the second connection section 2623 can be extended or the first connection section 2622 and the second connection section 2623 can be shortened when the rotation of the positioning wheel 264 can be realized.

Referring to fig. 5 and 6, in an embodiment, a rotating cavity 2542 is formed in the connecting seat 254, the positioning wheel 264 is rotatably disposed in the rotating cavity 2542, the positioning section 2621 is located in the rotating cavity 2542, two side walls of the connecting seat 254 facing the two lifting lug units 214 are provided with communication holes 2544 communicated with the rotating cavity 2542, the first connecting section 2622 is penetrated and connected to the lifting appliance girder 212 through the communication hole 2544 on one side, and the second connecting section 2623 is penetrated and connected to the lifting appliance girder 212 through the communication hole 2544 on the other side. The rotation cavity 2542 is formed in the connecting seat 254, so that the positioning wheel 264 is convenient to install, the positioning wheel 264 can be effectively protected by the rotation cavity 2542, and stable and reliable rotation of the positioning wheel 264 is guaranteed.

In other embodiments, the rotating chamber 2542 may be omitted and the positioning wheel 264 mounted directly to the outer wall of the connecting base 254.

In one embodiment, the positioning driving member is a motor, and the positioning wheel 264 is driven to rotate by the motor. In another embodiment, the positioning drive is a mobile drive source connected to the positioning wheel 264 via a transmission. For example, the moving drive source may be a hydraulic lever, an electric push rod, or the like, and the transmission member may be a rack-and-pinion mechanism, a screw nut mechanism, a crank block mechanism, or the like.

In this embodiment, since the adjustment of the inclination angle of the beam section 20 to be set often belongs to fine adjustment in a small range, for example, the adjustment angle of the beam section 20 to be set is generally in a range of about 10 degrees or less than 10 degrees, the positioning driving member may be a transmission member structure connected with the moving driving source, which is convenient for control and is convenient for realizing transmission of a large driving force.

In one embodiment, one end of the connecting hanging beam 252 is fixed to the connecting base 254, and the connecting hanging beam 252 is used for connecting a sling. Through connecting hanging beam 252 and connecting seat 254 fixed connection, on the one hand guarantee that connecting seat 254 and connecting hanging beam 252's reliable and stable connection, on the other hand because the setting of positioning wheel 264 is on connecting seat 254, and then can be when connecting hanging beam 252 rotates for hoist girder 212, synchronous drive positioning wheel 264 rotates, makes things convenient for the length of positioning wheel 264 control first linkage segment 2622 and second linkage segment 2623. In the above embodiment, the rotation cavity 2542 is formed in the connecting seat 254, so that the sling is connected to the connecting hanging beam 252 to ensure the reliability of the connection of the sling, so as to avoid the deformation of the connecting seat 254 caused by a large force. In another embodiment, slings may also be attached to the connector base 254.

Referring to fig. 3 and 4, an embodiment discloses a method for adjusting a hanging beam positioning mechanism 200, and the method for adjusting the hanging beam positioning mechanism 200 is applied to the hanging beam positioning mechanism 200 in any of the above embodiments.

Specifically, the adjusting method of the hanging beam positioning mechanism 200 includes:

Lifting the girder segment 20 to be erected to a preset height;

Judging the inclination direction of the beam section 20 to be erected at a preset height;

according to the inclination direction, the control positioning driving member drives the positioning wheel 264 to drive the positioning section 2621 to rotate forward or backward synchronously so as to adjust the lengths of the first connecting section 2622 and the second connecting section 2623 of the positioning pull belt 262.

In the adjusting method of the hanging beam positioning mechanism 200, two lifting lug units 214 of the beam hanger 210 are connected to the beam section 20 to be erected, and the beam section 20 to be erected can be lifted to a preset height by using the winch 220 and the beam hanger 210 through the connecting assembly 250. Judging that the beam section 20 to be erected is in the inclination direction of the preset height, when the beam section 20 to be erected needs to be adjusted to rotate relative to the erected beam section 30, for example, if one side of the first connecting section 2622, which is close to the positioning pull belt 262, is required to incline downwards, the positioning driving piece is controlled to drive the positioning wheel 264 to drive the positioning section 2621 to rotate synchronously, so that the first connecting section 2622 is extended, the second connecting section 2623 is shortened, one side of the first connecting section 2622 can be adjusted to incline downwards, and one side of the beam section 20 to be erected, which is close to the first connecting section 2622, is adjusted to rotate downwards. When the beam section 20 to be erected needs to be adjusted to rotate in the opposite direction, the positioning driving piece is controlled to drive the positioning wheel 264 to drive the positioning section 2621 to rotate in the opposite direction. By controlling the rotation angle of the positioning wheel 264, the length of the first connecting section 2622 and the second connecting section 2623 can be controlled to be extended or shortened, and thus the rotation angle of the girder section 20 to be erected can be controlled. The adjusting method of the hanging beam positioning mechanism 200 changes the traditional sliding friction mode of adjusting the hanging point position to connect the rotating friction between the hanging beam 252 and the hanging beam seat 256, can effectively reduce the abrasion consumption caused by the sliding friction, is more convenient for realizing angle adjustment, and prolongs the service life of the hanging beam positioning mechanism 200.

In one embodiment, the first connecting section 2622 and the first position are both near the erected beam segment 30, and the second connecting section 2623 and the second position are both far from the erected beam segment 30. If the hanging beam positioning mechanism 200 shown in fig. 4 needs to be adjusted to the set state shown in fig. 3, the portion of the beam section 20 to be supported close to the supported beam section 30 needs to be rotated upwards, that is, the first connecting section 2622 needs to be adjusted to be shortened, the second connecting section 2623 needs to be adjusted to be elongated, and the positioning wheel 264 is controlled to rotate clockwise as shown in the orientations of fig. 3 and 4.

Referring to fig. 1 and 2, in one embodiment, the lifting the girder segment 20 to a predetermined height includes:

Acquiring the alignment height of the edge of the erected beam segment 30, and obtaining a first splicing height of a first position and a second splicing height of a second position of the beam segment 20 to be erected according to the alignment height; wherein the spacing at the first location and the edge of the erected beam segment 30 is different from the spacing at the second location and the edge of the erected beam segment 30;

And lifting the beam section 20 to be erected, and acquiring a first real-time height of a first position and a second real-time height of a second position of the beam section 20 to be erected in real time until the first real-time height is equal to the first splicing height or the second real-time height is equal to the second splicing height.

In the present embodiment, the alignment distance sensor 310 is used to obtain the alignment height at the edge of the framed girder segment 30, the first distance sensor 320 is used to obtain the first real-time height of the first position of the girder segment 20 to be framed, and the second distance sensor 330 is used to obtain the second real-time height of the second position of the girder segment 20 to be framed.

The beam section 20 to be erected is lifted, a first real-time height of a first position of the beam section 20 to be erected is obtained in real time through the first distance sensor 320, and a second real-time height of a second position is obtained in real time through the second distance sensor 330 until the first real-time height is equal to the first splicing height or the second real-time height is equal to the second splicing height, and at the moment, the height position of the beam section 20 to be erected has reached a preset height, namely is consistent with the height of the beam section 30 already erected. Since the first and second positions are spaced differently relative to the edge of the erected beam segment 30, if the real-time height of one of the first and second positions reaches the splice position and the real-time height of the other position does not reach the splice position, it is demonstrated that the to-be-erected beam segment 20 has an oblique angle relative to the erected beam segment 30.

As shown in fig. 1, since the alignment distance sensor 310, the first distance sensor 320 and the second distance sensor 330 are all disposed on the diagonal brace 120, and the inclination angle of the diagonal brace 120 is known, the distance between the alignment distance sensor 310, the first distance sensor 320 and the second distance sensor 330 is known, and therefore, the first splicing height of the first position on the beam section 20 to be erected corresponding to the first distance sensor 320 and the second splicing height of the second position on the beam section 20 to be erected corresponding to the second distance sensor 330 can be obtained by the alignment height obtained by the alignment distance sensor 310 through the trigonometric function.

In one embodiment, the determining the inclination direction of the girder segment 20 to be erected at the preset height includes:

If the first real-time height is equal to the first splice height, the side of the to-be-framed girder segment 20 away from the framed girder segment 30 is inclined downward; if the second real-time height is equal to the second splicing height, the side of the beam section to be erected 20, which is close to the erected beam section 30, is inclined downwards; wherein the first position is proximate to the erected beam segment 30 and the second position is distal to the erected beam segment 30.

In this embodiment, since the beam section 20 to be set may have an angular deflection relative to the already set beam section 30 as indicated by the arrow in fig. 1, if there is an angular deflection as indicated by the arrow in fig. 1, the distance between the first position and the second position on the beam section 20 to be set may be detected by the first distance sensor 320 and the second distance sensor 330, and then the positioning wheel 264 is driven to rotate.

In an embodiment, according to the inclination direction, the controlling the positioning driving member to drive the positioning wheel 264 to drive the positioning section 2621 to rotate forward or backward synchronously to adjust the lengths of the first connecting section 2622 and the second connecting section 2623 of the positioning pull belt 262 includes:

if the first real-time height is equal to the first splicing height, controlling the positioning driving piece to drive the positioning wheel 264 to rotate so as to enable the first connecting section 2622 to be elongated and the second connecting section 2623 to be shortened, and adjusting the lifting height of the girder segment to be erected 20 in real time to keep the first real-time height equal to the first splicing height until the second real-time height is equal to the second splicing height;

If the second real-time height is equal to the second splicing height, controlling the positioning driving piece to drive the positioning wheel 264 to rotate so as to shorten the first connecting section 2622 and lengthen the second connecting section 2623, and adjusting the lifting height of the girder segment to be erected 20 in real time to keep the second real-time height equal to the second splicing height until the first real-time height is equal to the first splicing height; wherein the first connection section 2622 is proximate to the erected beam segment 30 and the second connection section 2623 is distal to the erected beam segment 30.

By driving the positioning wheel 264 to rotate to adjust the lengths of the first and second connection sections 2622 and 2623, the rotation of the to-be-framed segment 20 relative to the framed segment 30 can be adjusted until the first real-time height is equal to the first splice height and the second real-time height is equal to the first splice height, so that it can be determined that the to-be-framed segment 20 has been aligned in height and yaw angle with respect to the framed segment 30.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A bridge deck crane, characterized in that it comprises:

The crane comprises a crane main body, wherein the crane main body comprises a top operation platform, an inclined stay bar and a rear pull component, the top operation platform is arranged on the rear pull component, one end of the inclined stay bar is connected with the top operation platform, the other end of the inclined stay bar is connected with the rear pull component, and the inclined stay bar is positioned below the top operation platform and is obliquely arranged relative to the top operation platform; and

The lifting beam positioning mechanism comprises a beam lifting appliance, a connecting assembly and a positioning assembly, wherein the beam lifting appliance comprises a lifting appliance main beam and two lifting lug units, and the two lifting lug units are arranged on the lifting appliance main beam at intervals; the connecting assembly comprises a connecting hanging beam, a connecting seat and a hanging beam seat, wherein the hanging beam seat is arranged on the main girder of the lifting appliance and positioned between the two lifting lug units, the connecting seat is positioned above the hanging beam seat and is arranged at intervals with the hanging beam seat, one end of the connecting hanging beam is connected to the connecting seat, and the other end of the connecting hanging beam is rotatably connected to the hanging beam seat; the positioning assembly comprises a positioning pull belt, a positioning wheel and a positioning driving piece, wherein the positioning wheel is rotatably arranged on the connecting seat, two ends of the positioning pull belt are connected to the lifting appliance main beam and are respectively positioned between the connecting lifting appliance main beam and the two lifting lug units, the positioning pull belt is spanned on the positioning wheel, the positioning wheel is provided with a plurality of clamping protrusions, the clamping protrusions are arranged at intervals around the rotation axis of the positioning wheel, the positioning pull belt is provided with clamping grooves, the number of the clamping grooves is consistent with that of the clamping protrusions, and each clamping protrusion can correspondingly penetrate through one clamping groove; the positioning driving piece is controlled to drive the positioning wheel to drive the positioning section to synchronously rotate forwards or reversely so as to adjust the lengths of the first connecting section and the second connecting section; the positioning wheel is provided with a tensioning convex part, the tensioning convex part is arranged on the outer edge of the positioning wheel, and in an initial state, the tensioning convex part is positioned below the positioning section and is contacted with the connection position of the positioning section and the first connection section and the connection position of the positioning section and the second connection section;

The lifting beam positioning mechanism further comprises a winch, a sling and a sling displacement member, wherein the winch is arranged on the top operation platform, the sling displacement member is controlled to drive the winch to move, one end of the sling is connected with the winch, the other end of the sling is connected with the connecting lifting beam or the connecting seat, so that the beam sling is positioned below the diagonal brace, and the winch is controlled to be used for winding and unwinding the sling.

2. The bridge deck crane according to claim 1, wherein a rotating cavity is formed in the connecting seat, the positioning wheel is rotatably arranged in the rotating cavity, the positioning section is positioned in the rotating cavity, communication holes communicated with the rotating cavity are formed in two side walls of the connecting seat facing the two lifting lug units, the first connecting section is penetrated out of the communication holes on one side to be connected to the lifting appliance girder, and the second connecting section is penetrated out of the communication holes on the other side to be connected to the lifting appliance girder.

3. A bridge deck crane according to claim 2, wherein one end of the connecting suspension beam is fixed to the connecting base, the connecting base being for connecting a suspension cable or the connecting suspension beam being for connecting a suspension cable.

4. A bridge deck crane according to any one of claims 1 to 3, further comprising a hoist control mechanism comprising an alignment distance sensor, a first distance sensor, a second distance sensor and a hoist controller, the alignment distance sensor being disposed below the diagonal brace, the alignment distance sensor being located at an edge of the erected beam segment, the first distance sensor and the second distance sensor being disposed below the diagonal brace, and the first distance sensor and the second distance sensor being located opposite the to-be-erected beam segment, and the distances between the first distance sensor and the second distance sensor being different from the edge of the erected beam segment; the alignment distance sensor, the first distance sensor and the second distance sensor are all electrically connected to the hoisting controller; the alignment distance sensor is used for acquiring the alignment height of the edge of the erected beam segment, the first distance sensor is used for acquiring the first real-time height of the first position of the beam segment to be erected, and the second distance sensor is used for acquiring the second real-time height of the second position of the beam segment to be erected.

5. The bridge deck crane of claim 4, wherein the number of the diagonal braces is two, the two diagonal braces are arranged at intervals relatively, the number of the hanging beam positioning mechanisms is two, the two hanging beam positioning mechanisms are arranged at intervals relatively, and each hanging beam positioning mechanism is correspondingly arranged at one diagonal brace;

the first distance sensor and the second distance sensor are respectively arranged on the two diagonal braces, the number of the alignment distance sensors is two, and the two alignment distance sensors are respectively arranged on the same height position of the two diagonal braces; one alignment distance sensor is used for obtaining a first splicing height of the edge of the erected beam segment, which is aligned with the first position of the beam segment to be erected, and the other alignment distance sensor is used for obtaining a second splicing height of the edge of the erected beam segment, which is aligned with the second position of the beam segment to be erected.

6. A method of adjusting a bridge crane for use in a bridge crane according to any one of claims 1 to 5, the method comprising:

lifting the girder section to be erected to a preset height;

7. The method of adjusting a bridge deck crane of claim 6, wherein the lifting the beam section to be erected to a predetermined height comprises:

Lifting a beam section to be erected, and acquiring a first real-time height of a first position and a second real-time height of a second position of the beam section to be erected in real time until the first real-time height is equal to the first splicing height or the second real-time height is equal to the second splicing height;

the judging of the inclination direction of the girder section to be erected at the preset height comprises the following steps:

8. The method for adjusting a deck crane according to claim 7, wherein the controlling the positioning driving member to drive the positioning wheel to drive the positioning section to rotate forward or backward synchronously according to the inclination direction, comprises:

if the second real-time height is equal to the second splicing height, controlling the positioning driving piece to drive the positioning wheel to rotate so as to shorten the first connecting section and lengthen the second connecting section, and adjusting the lifting height of the girder section to be erected in real time to keep the second real-time height equal to the second splicing height until the first real-time height is equal to the first splicing height;

wherein the first connection section is proximate to the erected beam segment and the second connection section is distal to the erected beam segment.