CN111172858B - Mechanical bridge erecting mechanism, mechanical bridge erecting vehicle and method - Google Patents
Mechanical bridge erecting mechanism, mechanical bridge erecting vehicle and method Download PDFInfo
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- CN111172858B CN111172858B CN201911391702.6A CN201911391702A CN111172858B CN 111172858 B CN111172858 B CN 111172858B CN 201911391702 A CN201911391702 A CN 201911391702A CN 111172858 B CN111172858 B CN 111172858B
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- 238000009434 installation Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/12—Portable or sectional bridges
- E01D15/127—Portable or sectional bridges combined with ground-supported vehicles for the transport, handling or placing of such bridges or of sections thereof
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Abstract
The invention relates to the field of engineering machinery, in particular to a mechanical bridge erecting mechanism, a mechanical bridge erecting vehicle and a mechanical bridge erecting method. A mechanical bridge erection method translates a gantry provided with a deck assembly on a mounting platform in a first direction to a locked position and then rotates the gantry about a hinge point of the gantry to an erection position where the deck assembly can be deployed. Through above-mentioned technical scheme, through letting the portal slide earlier to the latched position, the motion of locking slip direction, then turn over the operation to the portal and let the portal rotate to erect the position. Therefore, the gantry does not need to extend out of the mounting platform initially, but is parallel to the mounting platform or is retracted in the mounting platform, the gantry extends out of the mounting platform through translational motion in the first direction, and the motion distance depends on the length required by the gantry supporting ground and the required balance gravity overturning moment when the bridge body is completely unfolded.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a mechanical bridge assumption device, a mechanical bridge erection vehicle and a mechanical bridge erection method.
Background
The mechanized bridge is one kind of bridge, and mainly can erect fast in the position such as the river canyon that does not have fixed bridge as temporary bridge use.
Therefore, the mechanical bridge needs to be transported on the road, and at present, the mechanical bridge is basically transported by a truck or other automobiles capable of transporting heavy goods. The vehicle can be folded on the automobile body during transportation, unfolded from the automobile body during use, erected on a river, and then separated from the body of the mechanical bridge. Most mechanized bridges are constructed in a turnover mode. The turnover type mechanical bridge is that the mechanical bridge horizontally placed on a vehicle is rotated by an angle to an erection position, and then bridge erection operation is carried out. Because the gravity center of the vehicle is changed after the mechanical bridge is overturned only by depending on the support of the vehicle, the load at the tail part of the vehicle is overlarge, and one end of the mechanical bridge body, which is close to the lower part, needs to be supported on the ground before the mechanical bridge rotates to the erecting position to perform operation; meanwhile, the rotating shaft of the mechanical bridge on the vehicle is higher than the ground, so that the mechanical bridge is inevitably extended out of the tail of the vehicle by a section, and the length of the mechanical bridge during transportation is usually determined based on the length of a carrying vehicle to be used during design, so that the length of the whole vehicle and the mechanical bridge during carrying of the mechanical bridge by the vehicle is overlong. Such as shown in patent publication No. CN 109183627A.
Disclosure of Invention
The invention aims to overcome the problem of overlong transport length of a mechanical bridge in the prior art, and provides a mechanical bridge erecting mechanism, a mechanical bridge erecting vehicle and a mechanical bridge erecting method, wherein the mechanical bridge is assumed to be a device, the mechanical bridge erecting vehicle and the mechanical bridge erecting method, which can shorten the transport length of the mechanical bridge,
in order to achieve the above object, the present invention provides a mechanical bridge erecting mechanism, which is characterized in that the mechanical bridge erecting mechanism comprises a mounting platform, a telescopic driving device and a gantry for bearing a mechanical bridge deck; the gantry is mounted on the mounting platform through a sliding hinge mechanism;
the telescopic driving device is connected between the mounting platform and the gantry, wherein the gantry has a translation state and a rotation state;
in the translation state, the telescopic driving device can drive the gantry to translate on the mounting platform to a locking position;
in the rotating state, the telescopic driving device can drive the portal frame to rotate through the sliding hinge mechanism.
In the prior art, the gantry of the turnover type mechanical bridge has only one rotational degree of freedom with respect to the mounting platform, and the tail end of the gantry is generally directly hinged to the mounting platform. Where the mounting platform is typically the chassis of the vehicle or a separate component that can be mounted to the vehicle. Meanwhile, one end of the door frame is required to be capable of supporting the ground when the door frame is rotated to the erection position, so that the door frame extends out of the installation platform by a certain length, and when the installation platform is fixed in length, the total length of the door frame after being installed on the installation platform is longer than that of the original installation platform.
Through the technical scheme, the gantry is installed on the installation platform through the sliding hinge mechanism, and the gantry has two degrees of freedom, namely a rotational degree of freedom and a translational degree of freedom, on the installation platform. The gantry is driven in a rotational and translational motion on the mounting platform by a telescopic drive. When the translational motion is not locked, due to the dead weight of the portal frame and the bridge deck assembly, when the telescopic driving device drives the portal frame, the portal frame can preferentially do translational motion on the mounting platform instead of rotating, and the portal frame is in a translational state; and when translational motion was locked, then similar with the rotation process among the prior art, flexible drive arrangement will drive the portal and rotate on mounting platform, and the portal is in the rotation state this moment.
Because the scheme of the invention has a translation state and a rotation state, the invention can lead the gantry in the initial state to be flush with the mounting platform without reserving an extra length required by the gantry supporting land, then lead the gantry to extend out of the mounting platform through the translation motion of the gantry on the mounting platform, then lock the translation motion and lead the gantry to rotate.
Preferably, a rolling device is arranged on the joint surface of the mounting platform and the gantry.
Preferably, the sliding hinge mechanism comprises a slide rail arranged on the door frame and a slide block capable of sliding in the slide rail; the slider is provided with a hinge and is hinged to the mounting platform through the hinge.
Preferably, a locking mechanism is arranged on the sliding hinge mechanism, and the locking mechanism can lock the sliding between the sliding block and the sliding rail, so as to fix the translational motion of the sliding hinge mechanism.
Preferably, the locking mechanism is a bolt, pin holes are respectively formed in the sliding block and the sliding rail, and the bolt can be inserted into the pin holes of the sliding block and the sliding rail to fix the sliding block to slide on the sliding rail.
The invention provides a mechanical bridge erecting vehicle, which comprises a vehicle body and a bridge deck assembly and is characterized in that the mechanical bridge erecting vehicle comprises the mechanical bridge erecting mechanism provided by the invention, the mounting platform is the vehicle body, and the bridge deck assembly is arranged on the portal frame.
Preferably, the door frame is mounted at the tail of the vehicle body through the sliding hinge mechanism.
Preferably, one end of the portal frame close to the tail of the vehicle body is provided with a support.
Preferably, the door frame can slide in the front-back direction of the vehicle body, and the axis of the rotating shaft of the door frame rotating around the vehicle body is perpendicular to the sliding direction of the door frame.
Preferably, one end of the deck assembly is detachably hinged to the gantry.
In a third aspect of the invention, a method of erecting a mechanized bridge is provided by translating a gantry having a deck assembly thereon in a first direction on a mounting platform to a locked position, and then rotating the gantry about a hinge point of the gantry to an erected position in which the deck assembly can be laid.
Preferably, a sliding block is slidably arranged on a sliding rail of the mounting platform, the sliding block can be locked at the locking position through a pin shaft, and the door frame is hinged to the sliding block.
Through above-mentioned technical scheme, through letting the portal slide earlier to the latched position, the motion of locking slip direction, then turn over the operation to the portal and let the portal rotate to erect the position. Therefore, the gantry does not need to extend out of the mounting platform initially, but is parallel to the mounting platform or is retracted into the mounting platform, the gantry extends out of the mounting platform through translational motion in the first direction, and the motion distance depends on the length required by the gantry supporting.
Drawings
FIG. 1 is a schematic view of a motorized axle mounted vehicle of the present invention at an initial stage;
FIG. 2 is a schematic illustration of a motorized bridging vehicle of the present invention translated to a locked position;
FIG. 3 is a schematic illustration of a motorized bridging vehicle of the present invention rotated to a bridging position;
FIG. 4 is a solid view of the deployment of a deck assembly of a mechanized bridging vehicle of the present invention;
fig. 5 is a top view of a motorized bridging vehicle of the present invention in a locked position.
Description of the reference numerals
1-gantry 2-telescopic driving device
3-vehicle body 4-sliding hinge mechanism
5-bridge deck assembly
Detailed Description
In the present invention, the use of the directional terms such as "upper, lower, left and right" generally means the orientation "inside and outside" shown in fig. 1 refers to the positional relationship of the outline of the apparatus itself, unless otherwise specified. The term explains that the mechanical bridge has a working length and a transport length for transportation, wherein the working length refers to the length of the mechanical bridge which can be passed after erection, and the transport length refers to the length of the mechanical bridge in the folding transportation process.
The invention provides a mechanical bridge erecting mechanism for solving the problem that a mechanical bridge is too long in length, and the mechanical bridge erecting mechanism comprises an installation platform, a telescopic driving device 2 and a gantry 1 for bearing a bridge deck assembly 5 of the mechanical bridge; the gantry 1 is mounted on the mounting platform through a sliding hinge mechanism 4;
the telescopic driving device 2 is connected between the mounting platform and the gantry 1, wherein the gantry 1 has a translation state and a rotation state;
in the translation state, the telescopic driving device 2 can drive the gantry 1 to translate on the mounting platform to a locking position;
in the rotating state, the telescopic driving device 2 can drive the gantry 1 to rotate at the sliding hinge mechanism 4.
The common hydraulic cylinder of the telescopic driving device 2 can be changed into a lead screw or an electric push rod and the like. The mounting platform may be the chassis of the transport vehicle or a separate component mounted on the transport vehicle with the component flush with the upper surface of the transport vehicle as shown in fig. 1-5.
The working process is as follows, the telescopic driving device 2 is specifically a hydraulic cylinder in the figure, and firstly, the initial state is as shown in figure 1; then the hydraulic cylinder contracts to drive the gantry 1 to slide rightwards to a locking position, which is shown in figure 2; then the translational motion is locked, and then the hydraulic cylinder is extended to the portal frame 1 to enter a rotating state to rotate on the mounting platform until the erection position is shown as figure 3, and finally the bridge deck assembly 5 is erected to the position, and the bridge deck assembly 5 is separated from the portal frame 1.
Then the work is carried out in the reverse direction, the hydraulic cylinder contracts the portal frame 1 to return to the position parallel to the mounting platform, then the translational motion is locked and unlocked, the hydraulic cylinder is extended, and the portal frame 1 slides leftwards to return to the initial position.
Through the technical scheme, the portal frame 1 is installed on the installation platform through the sliding hinge mechanism 4, and the portal frame 1 has two degrees of freedom, namely a rotational degree of freedom and a translational degree of freedom, on the installation platform. The gantry 1 is driven in a rotational and translational movement on the mounting platform by means of a telescopic drive 2. When the translational motion is not locked, due to the dead weight of the portal 1 and the bridge deck assembly 5, when the telescopic driving device 2 drives the portal 1, the portal 1 can perform translational motion on the mounting platform preferentially rather than rotation, and the portal 1 is in a translational state; when the translational motion is locked, the telescopic driving device 2 drives the gantry 1 to rotate on the mounting platform similarly to the rotation process in the prior art, and the gantry 1 is in a rotation state at the moment.
Because the scheme of the invention has a translation state and a rotation state, the invention can ensure that an extra length required by the bracing of the portal 1 is not reserved, but the portal 1 in the initial state is aligned with the mounting platform, then the portal 1 extends out of the mounting platform through the translation motion of the portal 1 on the mounting platform, then the translation motion is locked, and then the portal 1 rotates.
In order to be more beneficial to the sliding of the gantry 1 on the mounting platform in the translation state, a rolling device is arranged on the joint surface of the mounting platform and the gantry 1. The rolling device can be formed by installing a plurality of rollers on the installation platform, wherein the rollers are arranged between the portal frame 1 and the installation platform, and the peripheral surfaces of the rollers can roll on the portal frame 1; preferably, a plurality of rollers are symmetrically distributed on two sides of the axis of the gantry 1. The same roller can also be arranged on the door frame 1, so that the effect of facilitating the sliding of the door frame 1 on the mounting platform can be achieved by enabling the roller to roll on the mounting platform.
The sliding hinge mechanism 4 comprises a slide rail arranged on the gantry 1 and a slide block capable of sliding in the slide rail; the slider is provided with a hinge and is hinged to the mounting platform through the hinge. As shown in fig. 1 and 2, specifically, a slide block is hinged on the mounting platform, and a slide rail capable of being matched with the slide block is arranged on the gantry 1; the sliding rail on the door frame 1 is matched with the sliding block, so that a sliding hinge mechanism 4 consisting of the sliding rail and the sliding block with the hinge is arranged on the mounting platform. The sliding of the sliding block in the sliding rail can enable the portal 1 to move in a translation mode on the mounting platform, meanwhile, the sliding block can rotate on the mounting platform, and further the sliding block can rotate on the mounting platform together with the portal 1 through the rotation of the sliding block on the mounting platform.
Preferably, a locking mechanism is arranged on the sliding hinge mechanism 4, and the locking mechanism can lock the sliding between the sliding block and the sliding rail, so as to fix the translational motion of the sliding hinge mechanism 4. As shown in fig. 1-3, the sliding of the gantry 1 on the mounting platform is relatively easy, only the resistance to sliding needs to be overcome, while the rotation of the gantry 1 also overcomes the self-weight of the gantry 1 and the self-weight of the deck assembly 5. It can be readily appreciated that when the telescopic drive assembly is to raise the mast 1 after being driven to the condition shown in figure 2, the mast 1 will naturally slide to the left without being raised, and the mast 1 will only be raised by the drive of the telescopic drive assembly when moved to the position shown in figure 1, but the tail of the mast 1 is now flush with the mounting platform, and there is no section of the mounting platform that we need to extend. Therefore, the locking mechanism is a bolt, pin holes are respectively formed in the sliding block and the sliding rail, and the bolt can be inserted into the pin holes of the sliding block and the sliding rail to fix the sliding of the sliding block on the sliding rail. I.e. in the position shown in fig. 1, i.e. with the gantry 1 translated to the leftmost end on the mounting platform, and in the position shown in fig. 2, i.e. with the gantry 1 translated to the rightmost end of the mounting platform, in both positions the bolts can be inserted into the pin holes of the slide rails and the slide blocks, thereby locking the slide rails and the slide blocks. Specifically, a pin hole is formed in the sliding block, the gantry 1 moves on the mounting platform to the positions of the leftmost end and the rightmost end in the figures 1 and 2, and then the pin hole is formed in the gantry 1 which is coaxial with the pin hole in the sliding block and mainly on a sliding rail of the gantry 1.
As shown in fig. 1 to 5, the present invention also provides a mechanical bridge erecting vehicle, which includes a vehicle body 3 and a bridge deck assembly 5, the mechanical bridge erecting vehicle includes the mechanical bridge erecting mechanism provided by the present invention, the mounting platform is the vehicle body 3, and the bridge deck assembly 5 is disposed on the gantry 1. The invention relates to a mechanical bridge erecting vehicle, which is a specific case of applying the mechanical bridge erecting mechanism provided by the invention, and a mounting platform is specifically limited to a vehicle body 3. Then, a bridge deck assembly 5 is arranged on the portal frame 1, and the bridge deck assembly 5 is detachably connected with the portal frame 1. As shown in particular in fig. 4, one end of the deck assembly 5 is removably hinged to one end of said portal 1 close to the ground support.
Specifically, the gantry 1 is mounted at the rear of the vehicle body 3 through the sliding hinge mechanism 4. Wherein, one end of the portal frame 1 close to the tail part of the vehicle body 3 is provided with a support. The support can be supported on the ground after the portal frame 1 is rotated and lifted, so that the stability of the whole mechanical bridge erection vehicle is improved, and the pressure of the rear wheels of the vehicle is reduced.
Similarly, the gantry 1 can slide in the front-back direction of the vehicle body 3, and the axis of the rotating shaft of the gantry 1 rotating around the vehicle body 3 is perpendicular to the sliding direction of the gantry 1.
Meanwhile, the invention also provides a mechanical bridge erection method, firstly, the portal frame 1 provided with the bridge deck assembly 5 is translated to a locking position on the installation platform along the first direction, and then the portal frame 1 is rotated to an erection position where the bridge deck assembly 5 can be paved around a hinge point of the portal frame 1.
Referring to the drawings, there is shown in fig. 1-4 a vehicle body 3 which is a specific embodiment of a mounting platform. In order to shorten the transportation length of the mechanical bridge in a folded state, the portal frame 1 and the bridge deck assembly 5 of the mechanical bridge are flush with the mounting platform, and the portal frame 1 needs to be supported by the supporting ground at the tail part when the portal frame 1 is in an erection position. So the application provides a solution thinking, be exactly at the initial gantry 1 and the bridge floor subassembly 5 of mechanized bridge under the prerequisite of mounting platform parallel and level, at first let gantry 1 along translational motion to latched position earlier on mounting platform, latching translational motion when the latched position, because gantry 1 has moved one end distance in the first direction translational motion this moment, gantry 1 will grow a mounting platform festival, rotating gantry 1 to the position of erectting this moment, this a section of gantry 1 that just grows can prop the ground. Specifically, the first direction is the direction of the end of the gantry 1 supporting the ground, and the translational movement of the gantry 1 in the first direction is the movement of the gantry 1 towards the end of the gantry 1 supporting the ground, that is, the tail end of the gantry 1.
In order to be able to achieve such a translational movement and then to rotate, in particular, a slide block is slidably arranged on a slide rail of the mounting platform, the slide block can be locked in the locking position by a pin shaft, and the gantry 1 is hinged to the slide block.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (12)
1. A mechanical bridge erecting mechanism is characterized by comprising an installation platform, a telescopic driving device (2) and a portal (1) used for bearing a mechanical bridge deck assembly (5); the gantry (1) is mounted on the mounting platform through a sliding hinge mechanism (4);
the telescopic driving device is connected between the mounting platform and the gantry (1), wherein the gantry (1) has a translation state and a rotation state;
in the translation state, the telescopic driving device can drive the gantry (1) to translate on the mounting platform to a locking position;
in the rotating state, the telescopic driving device can drive the gantry (1) to rotate in the sliding hinge mechanism (4).
2. The mechanical bridging mechanism of claim 1, wherein a rolling device is provided at the interface of the mounting platform and the gantry (1).
3. The mechanical bridging mechanism according to claim 1, characterized in that the sliding articulation mechanism (4) comprises a slide rail provided on the gantry (1) and a slide block slidable therein; the slider is provided with a hinge and is hinged to the mounting platform through the hinge.
4. The mechanical bridging mechanism according to claim 3, wherein a locking mechanism is provided on the sliding hinge mechanism (4), and the locking mechanism can lock the sliding between the sliding block and the sliding rail, so as to fix the translational movement of the sliding hinge mechanism (4).
5. The mechanical bridging mechanism of claim 4, wherein the locking mechanism is a pin, pin holes are respectively formed in the sliding block and the sliding rail, and the pin can be inserted into the pin holes of the sliding block and the sliding rail to fix the sliding block to slide on the sliding rail.
6. A mechanical bridge erecting vehicle comprising a vehicle body (3) and a bridge deck assembly (5), characterized in that the mechanical bridge erecting vehicle comprises a mechanical bridge erecting mechanism as provided in any one of claims 1-5, the mounting platform being the vehicle body (3), the bridge deck assembly (5) being arranged on the gantry (1).
7. The mechanized bridging vehicle of claim 6, characterized in that the gantry (1) is mounted at the rear of the vehicle body (3) by the sliding hinge mechanism (4).
8. The mechanized bridging vehicle of claim 7, characterized in that a support is mounted to the mast (1) at an end near the tail of the vehicle body (3).
9. The mechanized bridging vehicle of claim 7, characterized in that the gantry (1) is slidable in a front-rear direction of the vehicle body (3), and a rotation axis of the gantry (1) around the vehicle body (3) is perpendicular to the sliding direction of the gantry (1).
10. The mechanized bridge erection vehicle of claim 6, wherein one end of the deck assembly (5) is detachably hinged on the gantry (1).
11. A method for mechanical bridge erection using a mechanical bridge erection mechanism according to any one of claims 1 to 5, characterized in that the gantry (1) provided with the deck assembly is translated on the mounting platform in a first direction to a locked position, and then the gantry (1) is rotated around the hinge point of the gantry (1) to an erection position where the deck assembly can be laid.
12. A mechanical bridging method according to claim 11, characterised in that the slide rails of the mounting platform are slidably provided with slides which can be locked in the locking position by means of pin shafts, the gantry (1) being hinged to said slides.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911391702.6A CN111172858B (en) | 2019-12-30 | 2019-12-30 | Mechanical bridge erecting mechanism, mechanical bridge erecting vehicle and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911391702.6A CN111172858B (en) | 2019-12-30 | 2019-12-30 | Mechanical bridge erecting mechanism, mechanical bridge erecting vehicle and method |
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| CN111172858A CN111172858A (en) | 2020-05-19 |
| CN111172858B true CN111172858B (en) | 2021-03-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236081A (en) * | 2020-03-04 | 2020-06-05 | 中联重科股份有限公司 | Bridging equipment |
| CN112160229A (en) * | 2020-10-21 | 2021-01-01 | 东南大学 | Emergency expandable cable-stayed bridge and self-erecting construction method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD300756A7 (en) * | 1980-05-23 | 1992-07-23 | Veb Stahl-Und Apparatebau Genthin | Laying, recovery and transport device for transportable laying bridges |
| CN203065953U (en) * | 2013-02-04 | 2013-07-17 | 天津滨海博泰海事工程技术有限公司 | Automatic-compensation telescopic trestle |
| CN204311337U (en) * | 2014-12-03 | 2015-05-06 | 中山市公路钢结构制造有限公司 | Emergent the robbing of a kind of gravity self-balancing formula is led to fast from building bridge |
| CN107574755B (en) * | 2016-12-12 | 2019-05-17 | 中国船舶重工集团应急预警与救援装备股份有限公司 | The erecting device and method of width adjustable mechanical bridge |
| CN106697687B (en) * | 2017-02-04 | 2019-01-08 | 瑞德(新乡)路业有限公司 | A kind of town road self-unloading garbage cart |
| CN208897302U (en) * | 2018-08-03 | 2019-05-24 | 温州电力设计有限公司 | A kind of ground tackle of captive balloon transport |
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Effective date of registration: 20230628 Address after: 410200 No. 997, Section 2, Tengfei Road, Wangcheng District, Changsha City, Hunan Province Patentee after: Hunan Zoomlion emergency equipment Co.,Ltd. Address before: No. 361, yinpen South Road, Yuelu District, Changsha City, Hunan Province 41007 Patentee before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. |
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