JPH09302626A - Feed-out slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide device which can continuously feed out a heavy or long object such as a bridge beam with no handwork and which can cope with a side-slip thereof, thereby it is possible to enhance the safety and workability while to greatly reduce the construction cost. SOLUTION: A feed-out slide device is set at a front fulcrum in a direction in which a bridge beam 100 is advanced axially, by means of a hydraulic feed- out device or the like, and comprises a crawler frame 15 having a function such that a side slip due to any of various causes of the bridge beam 10 may be absorbed, a Teflon plate 19 fixed to the crawler frame 15, and several crawlers 23 wound on the Teflon plate 19 and adapted to slide on the Teflon plate 19 and turn therearound together with the bridge beam 100 back and forth, and composed of steel crawler plates connected in a loop-like shape together by means of pins.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sending slide device applied to bridge construction work and the like.

[0002]

2. Description of the Related Art Generally, when constructing bridge girders that are heavy and long in bridge construction such as expressways,
The erection method is adopted.

This sending and erection method is, for example, as shown in FIG.
As shown in, the bridge girder 100 assembled in advance over a plurality of spans from one side of the highway 101 to the other side,
By the delivery action described later by the hydraulic delivery device 102,
This is a construction method in which a plurality of mounts 105 installed on the ground 103 or bridge piers 104 are slid in sequence in the bridge axis direction from the tip and installed.

As shown in FIG. 14, the hydraulic feed device 102 includes a temporary pedestal side vertical jack 102a, a feed device side vertical jack 102b, and a feed device horizontal jack 102c, which are extended and retracted in a predetermined order. Then, the bridge girder 100 is sent out like a so-called shakuri bug.

More specifically, first, as shown in FIG. 14 (a), when the bridge girder 100 is set, the vertical jack 10 on the temporary pedestal side.
Deposit in 2a. Next, as shown in FIG. 14 (b), the vertical jack 102b on the feeding device side is gradually raised to exchange the bridge girder 100. Next, as shown in FIG. 14C, the temporary cradle side vertical jack 102a is lowered, and the bridge girder 100 is received only by the sending device side vertical jack 102b. Next, as shown in FIG. 14D, the 1 m bridge girder 100, for example, is sent by the sending device horizontal jack 102c. Next, as shown in (e) of FIG. 14, the temporary pedestal side vertical jack 102a is gradually raised to refill the bridge girder 100. Next, as shown in (f) of FIG. 14, the sending device side vertical jack 102b is lowered, and the bridge girder 100 is received only by the temporary pedestal side vertical jack 102a. Finally, Figure 1
4 (g), the feeding device horizontal jack 102
Return c to its original position with no load.

[0006] Although one cycle of feeding work is performed in the above operation sequence, according to the present hydraulic feeding device 102, when the bridge girder 100 is being replaced and the bridge girder 1 is being replaced,
Work can be performed without moving 00 up and down.

On the other hand, in the frame 105, which is the front fulcrum under the feeding operation, conventionally, as shown in FIG. 15, a Teflon (Dupont Company) is provided between the stainless plate portion 105a on the frame 105 and the bridge girder 100. (Trade name of tetrafluoroethylene resin) plate 106 was inserted, and the Teflon plate 106 was moved together with the movement of the bridge girder 100. Therefore, the Teflon plate 10 separated from the stainless plate portion 105a
Each time, the worker had to insert the 6 again.

[0008] By the way, during the above-mentioned feeding work, not only for curved girders but also for linear girders, the bridge girder is laterally displaced due to the height difference of the pedestal or the jack for sending out, the bending of the temperature difference due to solar radiation, and the corner bending due to manufacturing and assembly errors. Occurs.

As a countermeasure against this, conventionally, guide rollers (chill tanks) are installed with a slight margin on both sides of the bridge girder, or forced correction is performed by a correction jack.

[0010]

As described above, in the conventional feeding and erection construction method, there is a problem in safety and workability because the Teflon plate is manually inserted in the pedestal under the feeding work. At the same time, there is a problem in that several workers must be on standby at one pedestal at all times, which leads to an increase in construction costs due to an increase in personnel costs.

Further, when lateral displacement of the bridge girder occurs, the chill tank cannot fully absorb it when the lateral displacement amount is large, and the correction jack is a partial and temporary correction and returns immediately after sending out. There was also a problem that the workability was extremely poor and the construction period was delayed.

In view of these circumstances, the present applicant has previously
We devised an automatic slide stand as shown in FIG. this is,
Endlessly connecting a number of Teflon plates 106 to a stand 1
No. 05 slides on the stainless plate portion 105a automatically and continuously, and continuous feeding is possible without manual work to improve safety and workability.

However, even in this automatic slide mount,
Since it is not possible to sufficiently deal with the lateral displacement of the bridge girder, there is a fear that the Teflon plate 106 may be deformed under high pressure and the connecting pin may be damaged.

Therefore, an object of the present invention is to enable continuous feeding without manual work and to sufficiently cope with lateral displacement of a weight girder or other long object such as a bridge girder to improve safety and workability and to reduce construction cost. An object of the present invention is to provide a feeding slide device capable of achieving a significant reduction.

[0015]

In order to achieve the above object, a delivery slide device according to the present invention is a delivery device installed at a front fulcrum when a weight / long object is delivered in the longitudinal direction by a propulsion drive means. A slide device for a vehicle, comprising a support frame having a function of absorbing lateral displacement of the weight / long object, a sliding plate portion made of a low friction material fixed to the supporting frame, and wound around the sliding plate portion. It is characterized in that a part thereof is provided with a belt-shaped rotating body which is slidable / rotatable in the front-back direction together with the weight / long member on the sliding plate portion by the propulsion force.

Further, the support frame can be moved up and down as the lateral deviation absorbing function.

Further, as a function of absorbing the lateral deviation, the support frame can be horizontally moved in the left-right direction by forced or external force.

Further, as a function of absorbing the lateral deviation, the support frame is horizontally rotatable by an external force.

Further, the support frame is rotatable in the front-rear direction.

Further, the support frame is provided with a position-adjustable guide member for guiding and regulating both left and right parts of the weight / long object.

Further, the sliding plate portion is constantly lifted by a plurality of push-up jacks so as to uniformly receive the vertical load.

Further, the belt-shaped rotating body is a crawler in which a large number of crawler plates made of a low friction material are connected in a loop by pins.

[Operation] According to the above-mentioned structure, continuous feeding can be performed without any manual work while absorbing lateral deviation.

If the support frame can be moved up and down, the lateral displacement due to the height difference of the gantry is absorbed.

Further, if the support frame can be horizontally moved in the left-right direction by the forced or external force, the lateral bending due to the temperature difference due to the solar radiation and the cornering due to the manufacturing or assembling error can be absorbed.

When the support frame is horizontally rotatable by an external force as the lateral deviation absorbing function, lateral deviation due to temperature bending due to solar radiation and corner bending due to manufacturing and assembly errors is absorbed.

If the support frame is rotatable in the front-rear direction, the bending of the weight / long object is absorbed.

If the support frame is provided with a position-adjustable guide member that guides and regulates both left and right parts of the weight / long object, deviation of the weight / long object of various width dimensions can be prevented. .

If the sliding plate portion is constantly lifted by a plurality of lifting jacks so as to receive the vertical load evenly, uneven wear of the sliding plate portion can be prevented.

Further, when the belt-shaped rotating body is a crawler in which a large number of crawler plates made of a low friction material are connected in a loop by pins, continuous feeding is smoothly performed.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION The feed slide device according to the present invention will be described below in detail based on embodiments.

[Embodiment] FIG. 1 is a front view of a slide device for feeding used in a bridge erection construction method, FIG. 2 is a half sectional plan view thereof, FIG. 3 is a side sectional view thereof, and FIG. 4 is a vertical sectional view thereof. FIG. 5 is a side view, FIG. 5 is an operation explanatory view of a vertical adjustment function, FIG. 6 is an operation explanatory view of a bridge axis direction rotating function, FIG. 7 is an operation explanatory view of a horizontal movement function by forced or external force, and FIG. 8 is a horizontal rotation function by external force. 9 is an explanatory view of the operation of the flange width adjusting function, FIG. 10 is an explanatory view of the structure of the crawler plate alone, and FIG. 11 is an assembly drawing thereof.

As shown in the figure, the jack fixing plate 2 and the horizontal moving plate 3 are placed on the base plate 1 in the shape of a tortoise shell so as to be horizontally rotatable relative to each other about the plane rotation shaft 4 and vertically stacked. To be done.

Shallow recesses 5 are formed on both the left and right sides of the plane of the rotary shaft 4 on the lower surface of the jack fixing plate 2, and a Teflon plate 7 is fitted into the shallow recesses 5 via an iron protection plate 6. The jack fixing plate 2 is slidable on the base plate 1 integrally with the horizontal moving plate 3 via the Teflon plate 7.

The horizontal moving plate 3 is guided and regulated by a pair of front and rear fall prevention guides 8 and is integrated with the jack fixing plate 2 only in the left-right direction (the direction perpendicular to the bridge axis direction) to be mounted on the base plate 1. By the expansion and contraction operation of the pair of horizontally moving jacks 9 which are attached sideways, it is possible to move a predetermined stroke amount (each ± 100 mm from the central axis of the base plate 1 to the left and right).

A vertical jack 11 (100 tons, 2 tons) is passed through the fool holes 10 of the horizontal moving plate 3 at both left and right portions of the upper surface of the jack fixing plate 2 with the plane rotary shaft 4 interposed therebetween.
(A stroke of about 30 mm) is attached downward with a bolt 12.

Then, the upper surface portion between the head portions 11a of the pair of left and right vertical jacks 11 and the upper surface portion between the head portions 11a and the first sliding surface 14a which is arcuate in the bridge axis direction and the first sliding surface are formed. The bridge shaft rotating shaft 14 formed on the lower second sliding surfaces 14b located on both sides of the surface 14a is fixed, and a pair of left and right crawler frames 15 are mounted on the bridge shaft rotating shaft 14 in the bridge shaft direction (front-back direction). ) Is rotatably mounted about ± 3 degrees.

That is, an arcuate bearing surface 15a which is in sliding contact with the second sliding surface 14b1 is formed at the center of the lower surface of the crawler frame 15 in the longitudinal direction, and the crawler frame 1 is also formed.
An arc-shaped bearing surface 16a formed in the center of the lower surface of the lower surface of the reaction plate 16 having a flat upper surface erected between the five sliding contact with the first sliding surface 14a. Reference numeral 17 in the drawing denotes a bolt that is coupled to the bridge shaft rotating shaft 14 so as to rotate the reaction force plate 16 but prevent it from coming off.

A pair of front and rear end plates 18 are installed between the crawler frames 15, and a Teflon plate (as a sliding plate portion) is enclosed in a rectangular space surrounded by the end plates 18 and the crawler frame 15 in a plan view. The upper surface of the end plate 18 is slightly protruded from the end plate 18 via a supporting plate 20, and the upper and lower parts of the supporting plate 20 are vertically movable, and four Teflon push-up jacks 21 are provided between the supporting plate 20 and the reaction plate 16. Are installed downward and at equal intervals in the longitudinal direction (bridge axis direction). Reference numerals 22a and 22b in the figure are copper alloy slide plates attached to the upper surface of the end plate 18 and the side surface of the crawler frame 15 to reduce friction.

And, in front of the Teflon plate 19,
A predetermined length portion is placed flat on both rear slide plates 22b, and both left and right side surfaces thereof are slid on both sides.
The crawler 23 as a belt-shaped rotating body is wound around the bridge shaft rotating shaft 14 while being guided by the guide. In the figure, 24 is a crawler plate 23a that constitutes the crawler 23.
Is a urethane roller for easily entering or leaving between the Teflon plate 19 and a bridge girder 100 described later, and 25 is a crawler guide.

As shown in FIGS. 10 and 11, the crawler 23 is formed by joining a large number of crawler plates 23a, which are strips of steel, into a loop by connecting the pins 23b at the concavo-convex portions that mesh with each other. The back surface of the crawler plate 23a (the surface in contact with the Teflon plate 19) is plated with hard chrome for better sliding, and the front surface (the surface in contact with the bridge girder 100) has a bridge girder 1.
The urethane rubber plate 23c is affixed with a setscrew 23d in order to protect the 00 coating and increase friction. Reference numeral 23e in the drawing is a taper plug for preventing the pin 23b from coming off.

On the other hand, from the outer surface of both the left and right crawler frames 15, two rails 26, front and rear, project laterally so as to sandwich the vertical jack 11, and guide and regulate the flange 100b of the bridge girder 100 on the rails 26. A guide roller 27 for moving is provided so as to be movable back and forth by an adjusting screw mechanism 28. Further, U-shaped covers 29 are attached to the front and rear parts of both the left and right crawler frames 15 so as to extend over both frames.

The horizontal movement jack 9, the vertical jack 11 and the Teflon pushing jack 21 are each driven by a hydraulic pump unit (not shown). In the figure, 30 is a hydraulic port for the Teflon push-up jack.
Further, reference numeral 31 in the drawing is a hanging piece.

Due to such a constitution, during the feeding operation of the bridge girder 100, the main feeding slide device is used as a frame of the front fulcrum.

At this time, as shown in FIG. 1, it is a condition that the center of the crawler 23 is aligned with the center of the web 100a of the bridge girder 100.

For this reason, the left and right ends of the flange 100b are guided and regulated by the four guide rollers 27 so that the bridge girder 100 will not be displaced on this device, as shown in FIG. Further, the guide roller 27 can be adjusted by an adjusting screw mechanism 28 so as to cope with a change in the flange width of the bridge girder 100.

In the above state, the propulsion drive means (not shown) at the rear of the bridge girder (for this, the hydraulic feed device shown in FIG. 14 or the propulsion jack on the carriage is used) is used.
When 0 is sent out in the bridge axis direction, the crawler 23 is thrust on the Teflon plate 19 by the thrust of the bridge girder 100.
It slides and rotates with it.

At this time, since the Teflon plate 19 is surrounded on both sides by the left and right crawler frames 15 and the pair of front and rear end plates 18, creep (distortion) can be prevented even under high pressure. Further, when the Teflon plate 19 is worn, a load from above is particularly applied to the end plate 18 (slide plate 22b).
However, in this device, four Teflon push-up jacks 21 lift the Teflon plate 19 so that 98% of the vertical load is taken by the Teflon plate 19. It serves to even out the pressure on the plate 19. The remaining 2% rides on the slide plate 22b, but this slide plate 22b is made of a copper alloy and has a small friction coefficient.

The crawlers 23 that slide and rotate on the Teflon plate 19 include the left and right crawler frames 15.
Since it is guided by (slide plate 22a), bridge girder 1
The external force of 00 does not twist the crawler 23.

On the other hand, at the time of the above-mentioned sending work, the bridge girder 10
For a camber (deflection) of 0, as shown in FIG. 6, the sliding device part supported by the left and right crawler frames 15 and the reaction plate 16 around the bridge shaft rotation shaft 14 is left. , The circular bearing surfaces 15a, 16a of the right crawler frame 15 and the reaction plate 16 rotate in the direction of the bridge axis within a range of about ± 3 degrees to absorb the rotation.

As for lateral displacement of the bridge girder 100 due to the height difference of the pedestal, as shown in FIG. 5, the two vertical jacks 11 attached to both ends of the bridge shaft rotating shaft 14 are appropriately extended.
By contracting, the height of the girder is adjusted and absorbed.

Further, lateral displacement of the bridge girder 100 due to bending of the temperature difference due to solar radiation and corner bending due to manufacturing and assembling errors can be absorbed by the horizontal movement function by forced or external force and the horizontal rotation function by external force.

That is, as shown in FIG. 7, the jack fixing plate 2 to which the vertical jack 11 is fixed is connected to the horizontal moving plate 3 by the plane rotary shaft 4, and the horizontal moving plate 9 is forced by the horizontal moving jack 9. The sliding device portion mounted on the bridge shaft rotating shaft 14 is moved by moving the bridge device in a direction perpendicular to the bridge shaft.

When an external force is applied from the bridge girder 100 side in the direction perpendicular to the bridge axis, the horizontal movement jack 9 is pulled along with the movement of the bridge girder 100 by releasing the hydraulic valve of the external hydraulic pump unit. It follows the movement of 100 and moves. This movement is performed by the Teflon plate 7 built in the jack fixing plate 2 directly below the vertical jack 11.

Further, as shown in FIG. 8, when the external force on the bridge girder 100 side is the external force in the rotating direction, the plane above the jack fixing plate 2 and the vertical jack 11 performs plane rotation about the plane rotation shaft 4. This rotation is also performed by the Teflon plate 7 directly below the vertical jack 11.

As described above, according to this embodiment, the bridge girder 100
At the front fulcrum of the bridge girder 100, the lateral displacement of the bridge girder 100 due to various factors can be effectively absorbed, and the bridge girder 100 can be continuously fed out without manual work by using the crawler 23. It is possible to significantly reduce construction costs by reducing costs.

By the way, when the bridge girder with 5 spans is sent out by using three mounts per fulcrum,
Conventionally, there are 3 workers per pedestal, total 3 ×
3 × 5 = 45 people were needed, but with the adoption of this device, 1
Since only one person needs to be at the fulcrum for monitoring, a total of five people will suffice.

Needless to say, the present invention is not limited to the above embodiments, and the materials and shapes of each member, the structure of various functions, and the like can be appropriately changed without departing from the scope of the present invention. Further, the present invention is applicable not only to the delivery of bridge girders but also to the delivery of other heavy and long objects.

[0059]

As described above, according to the present invention, a support frame having a function of absorbing lateral shift of a heavy / long object,
A sliding plate portion made of a low-friction material fixed to the support frame, and a part of the sliding plate portion wound around the sliding plate portion on the sliding plate portion by the propulsive force in the front-back direction together with the weight / long object. Since it is equipped with a belt-shaped rotating body that can slide and rotate, it enables continuous feeding without manual work and can sufficiently cope with lateral displacement of weight and long objects such as bridge girders, improving safety and workability And the construction cost can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a slide device for feeding according to an embodiment of the present invention.

FIG. 2 is likewise a half-section plan view.

FIG. 3 is a side view of the same.

[Figure 4] Similarly, a vertical side view

FIG. 5 is an explanatory diagram of the operation of a vertical adjustment function.

FIG. 6 is an explanatory view of the action of a bridge axial rotation function.

FIG. 7 is an explanatory view of the action of the horizontal movement function by forced or external force.

FIG. 8 is an explanatory view of the action of a horizontal rotation function by an external force.

FIG. 9 is an operation explanatory view of a flange width adjusting function.

FIG. 10 is a structural explanatory view of a single crawler plate.

FIG. 11 is an assembly drawing of the same.

FIG. 12 is an explanatory diagram of an automatic slide mount.

FIG. 13 is an explanatory diagram of a delivery erection method in bridge erection work.

FIG. 14 is an operation explanatory view of the hydraulic pressure delivery device.

FIG. 15 is an explanatory diagram of a conventional work of a delivery platform.

[Explanation of symbols]

 1 base plate 2 jack fixing plate 3 horizontal moving plate 4 plane rotating shaft 7 teflon plate 9 horizontal moving jack 11 vertical jack 14 bridge shaft rotating shaft 14a first sliding surface 14b second sliding surface 15 crawler frame 15a bearing surface 16 reaction force Plate 16a Bearing surface 18 End plate 19 Teflon plate 20 Support plate 21 Teflon push-up jack 22a, 22b Sliding plate 23 Crawler 23a Crawler plate 23b Pin 23c Urethane rubber plate 24 Urethane roller 25 Crawler guide 26 Rail 27 Guide roller 28 28 Adjusting screw mechanism 100 Bridge girder 100a Web 100b Flange

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masashi Sakakibara 12 Nishiki-cho, Naka-ku, Yokohama-shi, Kanagawa Mitsubishi Heavy Industries Construction Co., Ltd.

Claims (8)

[Claims] 1. A delivery slide device installed at a front fulcrum when a propulsion drive unit feeds a heavy / long object in the longitudinal direction, the support frame having a lateral deviation absorbing function for the heavy / long object. A sliding plate portion made of a low-friction material fixed to the supporting frame, and a part of the sliding plate portion wound around the sliding plate portion and driven by the propulsion force along the weight / long object in the front and rear direction. And a belt-shaped rotating body that is slidable / rotatable in any direction. 2. The feeding slide device according to claim 1, wherein a support frame is movable up and down as the lateral deviation absorbing function. 3. The feed-out slide device according to claim 1, wherein the support frame is capable of horizontally moving in the left-right direction by forced or external force as the lateral deviation absorbing function. 4. The feed-out slide device according to claim 1, wherein a support frame is horizontally rotatable by an external force as the lateral deviation absorbing function. 5. The feeding slide device according to claim 1, wherein the support frame is rotatable in the front-rear direction. 6. The supporting frame is on the left side of a weight / long object,
6. The feeding slide device according to claim 1, further comprising a position-adjustable guide member that guides and regulates both right portions. 7. The slide plate portion is always lifted by a plurality of push-up jacks so as to uniformly receive a vertical load, and the slide plate portion is lifted by a plurality of push-up jacks. The slide device for sending out described in 1. 8. The belt-shaped rotating body is a crawler in which a large number of crawler plates made of a low friction material are connected in a loop by pins.
The slide device for delivery according to any one of 4, 5, 6 and 7.