CN212956130U - Rotary structure for improving and installing rear support leg trolley of bridge girder erection machine during girder erection with small curve radius - Google Patents
Rotary structure for improving and installing rear support leg trolley of bridge girder erection machine during girder erection with small curve radius Download PDFInfo
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- CN212956130U CN212956130U CN202020623389.6U CN202020623389U CN212956130U CN 212956130 U CN212956130 U CN 212956130U CN 202020623389 U CN202020623389 U CN 202020623389U CN 212956130 U CN212956130 U CN 212956130U
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- girder erection
- landing leg
- bridge girder
- platform truck
- connecting plate
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Abstract
The utility model provides a landing leg platform truck reforms transform revolution mechanic who installs additional behind bridge girder erection machine when little curve radius frame roof beam, rotates free bearing, back landing leg platform truck connecting plate, rotation slide and positioning mandrel including back landing leg, back landing leg rotates the free bearing center and is equipped with a positioning mandrel, and this positioning mandrel passes landing leg bottom end rail behind the bridge girder erection machine, back landing leg platform truck connecting plate is connected with landing leg bottom end rail behind the bridge girder erection machine, and back landing leg platform truck connecting plate passes positioning mandrel, and back landing leg platform truck connecting plate can be around positioning mandrel rotation. The structure can realize the working condition of curve swing when the bridge girder erection machine longitudinally moves, namely the bridge girder erection machine can walk in a curve way when passing through a hole, and meanwhile, the danger caused by the overlarge swing of the main leg trolley behind the bridge girder erection machine can be prevented.
Description
Technical Field
The utility model belongs to an equipment is used in the bridge construction, in particular to landing leg platform truck reforms transform additional revolution mechanic behind bridge girder erection machine when little curve radius frame roof beam.
Background
At present, the bridge girder erection machine is suitable for the condition that the minimum curve radius is more than or equal to 2000m, when the bridge girder erection machine passes through a hole during the construction of the bridge girder under the working condition of small curve radius, the phenomenon that the rear landing leg trolley with small curve radius is easy to deviate and cannot walk in place during the walking process is easily caused, and therefore the requirement of the construction of the bridge girder with small curve radius cannot be met.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned prior art, the utility model provides a frame bridge crane rear leg platform truck reforms transform revolution mechanic who installs additional when little curve radius frame roof beam, the curve swing operating mode when this structure can realize frame bridge crane longitudinal movement, but the curvedly walking when frame bridge crane via hole promptly can prevent that frame bridge crane rear leg platform truck too big swing from producing danger simultaneously.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a landing leg platform truck reforms transform revolution mechanic who installs additional behind bridge girder erection machine when little curve radius frame roof beam, rotates free bearing, back landing leg platform truck connecting plate, rotation slide and positioning core axle including back landing leg, back landing leg rotates free bearing center department and is equipped with a positioning core axle, and this positioning core axle passes landing leg bottom end rail behind the bridge girder erection machine, back landing leg platform truck connecting plate is connected with landing leg bottom end rail behind the bridge girder erection machine, and back landing leg platform truck connecting plate passes positioning core axle, and back landing leg platform truck connecting plate can be rotatory around positioning core axle.
And the contact surfaces of the rear supporting leg rotating hinged support and the rear supporting leg trolley connecting plate are respectively and additionally provided with a rotating sliding plate.
And the top of the positioning mandrel is provided with threads, and the positioning mandrel penetrates through the lower cross beam of the rear supporting leg of the bridge girder erection machine and is then fastened by mounting a nut.
The rotating sliding plate is made of a teflon plate and a stainless steel plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a rear landing leg rotates the free bearing center and is equipped with a positioning core axle, and curve swing operating mode when realizing bridging machine longitudinal movement can curve walking when bridging machine via hole promptly, can prevent that bridging machine rear main leg platform truck too big swing from producing danger simultaneously.
2. The utility model discloses well back landing leg rotates free bearing and back landing leg platform truck connecting plate contact surface installs tetrafluoro plate and corrosion resistant plate respectively additional as rotating the slide, can guarantee that back landing leg platform truck connecting plate can rotate around the positioning core axle on the back landing leg rotates the free bearing rotatory to further realize little curve radius operating mode beam erection construction, curve swing operating mode during bridge girder erection machine via hole, can curve walking during the via hole of bridge girder erection machine promptly.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a view of the swing structure A shown in FIG. 1;
fig. 3 is a view of the swing structure B shown in fig. 1.
In the figure: 1-rear support leg rotating hinged support, 2-rear support leg trolley connecting plate, 3-tetrafluoro plate, 4-stainless steel plate, 5-positioning mandrel, 6-positioning mandrel nut and 7-connecting bolt.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are only illustrative and not intended to limit the present invention.
As shown in fig. 1, fig. 2 and fig. 3, the utility model provides a landing gear rear leg platform truck reforms transform additional revolution mechanic who installs when little curve radius frame roof beam, rotate free bearing 1, rear leg platform truck connecting plate 2, rotation slide 3, 4 and positioning core axle 5 including the rear leg, the rear leg rotates free bearing 1 and adorns admittedly on the platform truck and its central department is equipped with a positioning core axle 5, and this positioning core axle 5 passes the landing gear rear leg bottom end rail, rear leg platform truck connecting plate 2 adopts bolted connection with the landing gear rear leg bottom end rail, and rear leg platform truck connecting plate 2 passes positioning core axle 5 and can wind positioning core axle 5 rotatory.
And a polytetrafluoroethylene plate 3 and a stainless steel plate 4 are additionally arranged on the contact surface of the rear leg rotating hinged support 1 and the rear leg trolley connecting plate 2 respectively to serve as rotating sliding plates.
And the top of the positioning mandrel 5 is provided with threads, and nuts are arranged after the positioning mandrel penetrates through the lower cross beam of the rear supporting leg of the bridge girder erection machine for fastening.
As shown in figure 3, before assembly, silicone grease or other lubricating grease is smeared between tetrafluoro plate 3 and corrosion resistant plate 4 that back landing leg rotation free bearing 1 and back landing leg platform truck connecting plate 2 contact surface installed additional promptly and friction coefficient is reduced to guarantee that back landing leg platform truck connecting plate 2 can rotate around the positioning core axle 5 on the back landing leg rotation free bearing 1, realize the construction of small curve radius operating mode frame roof beam, curve swing operating mode when the bridge girder erection machine passes the hole, but curve walking when the bridge girder erection machine passes the hole promptly.
The utility model discloses can realize little curve radius operating mode frame roof beam construction, curve swing operating mode during the bridging machine via hole, but the curvilinear motion during bridging machine via hole promptly can prevent that bridging machine back main leg platform truck too big swing from producing danger simultaneously, its easy operation, it is safe laborsaving.
Although the present invention has been described with reference to the accompanying drawings, the invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a landing leg platform truck reforms transform additional revolution mechanic behind bridge girder erection machine during little curve radius frame roof beam which characterized in that: including back landing leg rotation free bearing, back landing leg platform truck connecting plate, rotation slide and positioning mandrel, back landing leg rotates the free bearing center and is equipped with a positioning mandrel, and this positioning mandrel passes landing leg bottom end rail behind the frame bridge machine, back landing leg platform truck connecting plate is connected with landing leg bottom end rail behind the frame bridge machine, and back landing leg platform truck connecting plate passes positioning mandrel, and back landing leg platform truck connecting plate can be around positioning mandrel rotation.
2. The improved revolving structure of the rear leg trolley of the bridge girder erection machine during the girder erection with small curve radius according to claim 1, is characterized in that: and the contact surfaces of the rear supporting leg rotating hinged support and the rear supporting leg trolley connecting plate are respectively and additionally provided with a rotating sliding plate.
3. The improved revolving structure of the rear leg trolley of the bridge girder erection machine during the girder erection with small curve radius according to claim 1, is characterized in that: and the top of the positioning mandrel is provided with threads, and the positioning mandrel penetrates through the lower cross beam of the rear supporting leg of the bridge girder erection machine and is then fastened by mounting a nut.
4. The revolving structure for improving and installing the rear leg trolley of the bridge girder erection machine during the girder erection with the small curve radius according to claim 2 is characterized in that: the rotating sliding plate is made of a teflon plate and a stainless steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020623389.6U CN212956130U (en) | 2020-04-23 | 2020-04-23 | Rotary structure for improving and installing rear support leg trolley of bridge girder erection machine during girder erection with small curve radius |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020623389.6U CN212956130U (en) | 2020-04-23 | 2020-04-23 | Rotary structure for improving and installing rear support leg trolley of bridge girder erection machine during girder erection with small curve radius |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212956130U true CN212956130U (en) | 2021-04-13 |
Family
ID=75373367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020623389.6U Active CN212956130U (en) | 2020-04-23 | 2020-04-23 | Rotary structure for improving and installing rear support leg trolley of bridge girder erection machine during girder erection with small curve radius |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212956130U (en) |
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2020
- 2020-04-23 CN CN202020623389.6U patent/CN212956130U/en active Active
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