JPS6027763B2 - Fixed bearings and how to install them - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixed support suitable for use in bridges, elevated structures, particularly monorail girders, and its purpose is to provide a structure and installation method that facilitates horizontal and vertical position adjustment of the girder. It is something.

In general, monorail girders have a narrower girder width than those of underground roads, railway bridges, and elevated structures. Because the girder itself is used as a track, it must have a structure that can support the upward lifting force caused by the overturning moment, and the vertical (up and down), horizontal (left and right) positions, and neck of the girder can be easily adjusted during installation. Ru. In addition, in order to cope with displacement such as expansion and contraction of the girder and distortion, similar to general road bridges and railway bridges, in order to cope with displacement such as expansion and contraction of the girder, fixed bearings that have the function of escaping displacement such as tilting of the girder are installed on specific piers. The other piers are configured to have movable supports that have the function of easing expansion and contraction of the girder in addition to the fixed support function.

In order to meet these demands, various studies have been carried out, such as installing a curved support between the girder and the pier, and connecting the girder and the pier with separately provided anchor bolts, or using a lo-fu support. There are some that use
In order to satisfy these requirements, the structure is complicated, expensive, and manufacturing and installation are complicated.

In order to satisfy the above-mentioned requirements, the present invention includes a support body containing a ball stud in the upper structure, a holder for holding the support body and a base plate in the lower structure, and a base plate between the base plate and the holder. The present invention provides a fixed support that is easy to manufacture, install, and adjust its position at low cost by interposing an eccentric plate therebetween, and a method for installing the fixed support.

In other words, it is a fixed support in which a support body containing ball studs that is fixed to an upper structure such as a bridge girder is held by a holder that is fixed via a base plate to an anchor plate that is embedded and fixed in advance in a lower structure such as a bridge pier. In the base plate, a pin protruding upward is formed at the center, a first eccentric plate is rotatable around the pin axis, and a second eccentric plate is attached to the first eccentric plate. Eccentric plates are each equipped with iron so that they can rotate around the first eccentric plate, and these eccentric plates are mounted on the base plate. Fixing parts facing each other and having threaded parts on the inner surface are formed, and the holding body is remounted on the base plate with the eccentric plate ironed in the through hole thereof, and is attached to the lower structure by fixing bolts. The support is fixed, and the support is provided with a gate part having a threaded part at one end, a housing having a concave spherical surface on the bottom surface, a spherical part that slides into contact with the concave spherical surface of the housing, and a threaded part integrally with the spherical part. and a shank portion having
a ball stud disposed with the shank portion protruding from the housing opening; a bearing plate that slidingly supports a ball portion of the ball stud on the shank portion side within the housing;
The support plate is screwed onto the threaded part of the housing and presses the bearing pressure plate, and the support body is fixed to the upper structure with its housing, and is screwed and fixed with its shank part to the fixed part of the holder. In the fixed support and the above structure, the holder is arranged to pass through a bolt hole provided in the holder and a mounting hole larger than the bolt hole provided in the base plate and the anchor plate, At the end on the holder side, a washer with a concave-convex spherical surface arranged on the upper surface of the holding body is inserted, and at the end on the anchor plate side, a patch plate and a concave-convex spherical surface arranged to cover the lower surface of the mounting hole are attached. The present invention provides a fixed support characterized in that it is fixed to a lower structure by a fixing bolt fixed through a washer, and a method for installing the fixed support.

Furthermore, the fixed bearing of the present invention was invented by the inventors of the present invention,
The "movable bearing" filed as No. 437, that is, the bearing body containing the ball stud of the present invention, is fixed to an upper structure and a lower structure, respectively, and the threaded portion of each ball stud is connected by a holding cylinder. This is particularly effective when the girder is constructed in combination with movable bearings.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the figure, G is an upper structure such as a girder (bridge girder), B is a lower structure such as a bridge pier, and C is a fixed support. 1 is a support fixed to the superstructure G by anchor bolts 2, etc.;
Reference numeral 3 designates a housing for the support 1, and the housing 3 has a bottom 4 formed as a concave spherical surface on one end surface, and a closed recess 6 having a threaded portion 5 provided at the entrance end.

Reference numeral 7 denotes a ball stud whose one end is inserted into the housing 3, and the ball stud 7 has one end inserted into the bottom part 4 of the housing.
A shank part 9 is formed at the other end of the ball part 8 that slides into contact with the shank part 9 which protrudes from the entrance recess 6 of the housing 3 and is provided with a threaded part. Reference numeral 10 denotes a disc-shaped bearing plate having a concave spherical part 11 formed on the same spherical surface as the spherical part 8 of the ball stud, and a hole 12 penetrating through the thickness thereof into which the shank part 9 of the ball stud can be inserted. So, the bearing plate 1 and the housing 3
The concave spherical portion 11 of the housing is slid into contact with the spherical portion 8 near the shank portion 9 of the pole stud disposed in the entrance recess 6 of the housing.

Reference numeral 13 is a disc-shaped member having a threaded portion 14 and a hole 15 formed thereon on the outer surface thereof, into which the shank portion 9 of the ball stud is inserted through the threaded portion 14 and its thickness, and which allows the inclination (deflection) of the upper structure G. The press plate 13 is a press plate, and the press plate 13 screws the screw portion 14 of the screw portion 51 provided in the opening recess 6 of the housing.
This is to fix the bearing pressure plate 10 in a fixed position.

Further, the locking of the press plate 13 screwed onto the housing 3 is achieved by a concave groove 17 formed on the end face of the press plate 13 located on the shank portion 9 side, perpendicular to the axis of the shank portion, and a closing hole of the housing 3. Locking key 16 fixed to the end of the part
This is done by engaging with the

18 is a small hole for screwing provided in the press plate 13, and 19 is a notched flat part made in the shank portion 9 of the ball stud.

20 is an anchor plate embedded in the lower structure B, and the anchor plate 20 has fixing bolts 21.
The mounting holes 22 and 22 in which the fixing bolts 21 are arranged are
．． It is formed to be bored larger than the diameter of 21.

23 is a mounting hole 22 provided in the anchor plate 2.
．． It is a backing plate that covers 22.

Reference numeral 24 denotes a base plate fixed to the upper surface of the lower structure B. The base plate 24 has a pin 25 projecting upwardly at the center of the upper surface and a pin 25 at both ends facing the mounting holes 22 and 22 of the anchor plate and having the same shape. Mounting hole 26.26
is provided.

27 is iron-mounted so as to be able to rotate and slide around the pin axis of the base plate pin 25, and the base plate 24
The first eccentric plate 28 is layered on top of the first eccentric plate 27.
The second eccentric plate is mounted on the base plate 24 and is mounted on the base plate 24 so that it can rotate and slide around the first eccentric plate.

Reference numeral 29 denotes a holding plate that holds the support plate 1, and the holding body 29 has a through hole 30 in its center and an inner surface that holds the support body 1 and faces oppositely to both ends in the direction perpendicular to the bridge axis across the through hole 30. A fixing part 32.32 is provided with a threaded part 31, and bolt holes 33.33 into which the fixing bolt 21.21 is inserted are formed at both ends of the fixing part 32.32.

The holder 29 is arranged on the base plate 24 with its through hole 30 mounted on the second eccentric plate 28 placed on the base plate 24, and is arranged on the base plate 24 via the anchor plate 2 and the support plate 23. Insert the bolt hole 33.33 into the fixing bolt 21.21, and then insert the fixing bolt 21.2.
1, it is fixed to the lower structure B.

34.34 is a locking nut;
are arranged on the fixing part 32.32 of the holding body, and the fixing part 32.
This serves to prevent the support plate 1 held by the support plate 32 from loosening.

35 is a diamond that covers the through hole 30 of the holder; the lid 35 is the first and second eccentric plates 27 inserted into the through hole 30;

28.

36. 37 are first and second eccentric plates 27. 28 jig insertion holes 38 provided with hinges.

Reference numeral 38 designates a washer placed on the fixing bolt 21.21. The washer 38.38 is divided into two parts, and one of the joining surfaces is formed into a concave spherical surface and the other into a convex spherical surface.

39.39 is the base plate 24 and anchor plate 2
0 between the respective mounting holes 22.26 and covering the fixing bolts 21.21, the protection tube 39
．． 39 is formed in a size that allows movement of the fixing bolts 21 and 21.

Reference numeral 40.40 is a cover placed over the anchor plate 20', which protects the force bar 40.4 and the backing plate 23 and washer 38.38 arranged in the attachment hole 22 of the anchor plate.

Here, the method of installing the fixed support C to the upper and lower structures G and B will be described in detail.

That is, the anchor plate 20 is attached to the lower structure B in advance at the time of manufacturing the lower structure B or in the recessed part of the box.
and the base plate 24, and the anchor plate is fitted with a plate 23.23 and a washer 38.38 in its mounting hole 22.22.
A fixing bolt 21.21 is disposed through the fixing bolt 21.21, and the fixing bolt 21.21 is connected to the fixing bolt 21.21 in the lower structure B.
A protection tube 39 and a cover 40 are attached to cover and protect the base plate 24, and the mounting holes 26.2 are attached to the base plate 24.
By inserting the fixing bolts 21 and 21 into the anchor plates 20' and 6, the base plate 24 is embedded and fixed in the lower structure B with its pins 25 facing upward.

A first eccentric plate 27 is disposed on the base plate 24.
The first eccentric plate 27 is iron-mounted to the pin 25 of the base plate so that it can rotate and move around the pin axis, and the second eccentric plate 28 is attached to the first eccentric plate 28. body 0 plate 2
7, an iron bag is attached so that it can rotate and slide around the first eccentric plate, and the iron bag is mounted.

After that, the through hole 30, the fixing part 32, 32 and the bolt hole 3
A retaining plate 29 with bolts 3 and 33 is mounted on the eccentric plate 27 and 28 in the through hole 30, and a bolt 33 is attached.

A fixing bolt 21.21 is iron mounted on the base plate 24 at the fixing part 32.3 of the holding body 29.
The ball stud 7 of the support body, in which the bearing pressure plate 10 and the pressure plate 13 are inserted into the shank part 9, is screwed onto the threaded part 31.31 provided in the fixing part 32.32. to have.

In this state, the position of the support 1 held by the holder 29, the so-called pole stud 7, in the horizontal direction (left-right direction), in other words, in the direction perpendicular to the bridge axis and the bridge axis, is measured, and if there is an error, the holder The first and second bridges D located in the through hole 30 of
The plates 27 and 28 are inserted into the jig insertion holes 36 and 37 provided in each of the eccentric plates 27 and 28' by inserting a rotating jig (not shown) and rotated in either direction. In other words, the position of the ball stud 7 of the support body held by the holder 29 is adjusted to a predetermined position.

This means that the first eccentric plate 27 is rotatably and slidably mounted around the pin axis of the base plate 24, and the second eccentric plate 28 is iron-mounted so as to be rotatably slidable around the first eccentric plate. By rotating one or both directions about the pin 25 in the same direction or mutually opposite directions, the holding body 29 into which the first and second eccentric plates 27 and 28 are inserted into the three through holes thereof is rotated. A second eccentric plate 2 iron-mounted to the first eccentric D plate 27
8, the maximum movable amount e, that is, the eccentricity of the first eccentric plate 27 with respect to the pin 25, is e', the first gutter center plate 27.
If the eccentricity of the second eccentric plate 28 relative to
2(e'+e''), and can be adjusted to any position within the range of e'.In addition, when adjusting the position, the position of the bolt hole 33. The mounting holes 22 and 26 of the anchor plate 20 and base plate 24 embedded and fixed in the structure B are arranged so that the mounting holes 22 and 26 of the anchor plate 20 and the base plate 24 do not cause any trouble even if the mounting holes 22 and 26 of the anchor plate 20 and the base plate 24 are fixedly embedded in the structure B.
2.26 and the protective tube 39 that protects the fixing bolt 21.21 is formed larger than the width of the fixing bolt 21.21 so that the fixing bolt 21.21 can move following the fluctuation. . In addition, the holder 29 and the backing plate 23 are designed so that even if the fixing bolt 21.21 is moved due to fluctuation, no gap will be created between the fastening surfaces of the fixing bolt 21.21, the holder 29, and the backing plate 23. A washer 38,38 having a concave and convex spherical surface that follows the movement is arranged.

Furthermore, the supporting body 1. which is held by the holding body 29. Adjustment of the position of the so-called ball stud 7 in the vertical direction (vertical direction) is as follows:
This is done by rotating the ball stud 7 screwed into the threaded part 31 provided on the fixing part 32 of the holder in either direction using the notched flat part 19 provided in the shank part, and after adjustment. is the locking nut 34
.

34, the ball stud 7 is fixed to the fixing part 32.

・After adjusting the position in this way, the holding body 29
Fixing bolt 2 to lower structure B via base plate 1
1.21, and then using the anchor bolts 2, attach the housing 3 of the support body, which is fixed integrally to the upper structure G, to the ball stud 7 of the support plate arranged on the lower structure B, using the Sekiguchi recess 6 of the housing. In detail, the housing is inserted so that the bottom 4 of the closing recess 6 is in sliding contact with the ball part 8 of the ball stud, and then the pressure plate 13 and bearing plate 10, which were previously arranged on the ball stud 7, are inserted. The press plate 13 is screwed with its screw portion 14 into the screw portion 8 provided at the mouth end of the open recess 6 of the housing and pressed so that the bearing pressure plate 10 comes into sliding contact with the ball portion 8 within the housing 3. , and a key 16 for fixing the press plate 13 to the housing 3 is disposed in the concave groove 17 of the press plate, and the support 1 is assembled by fixing the key 16 to the housing 3. By this, a fixed support C is constructed, and the upper and lower structures G and B are integrated by the fixed support C thus constructed, and the erection is completed.

The fixed support C of the present invention has the above-described configuration and fixing method, and allows easy adjustment of the position of the girder in the vertical direction (vertical direction), which is required as a support for a monorail girder, by rotating the ball studs 7 of the support. The first and second eccentric plates 27 are iron-inserted into the through holes 30 of the holding body and can be adjusted in the horizontal direction (horizontal direction).

This can be easily done by rotating 28.

In this embodiment, in order to fix the fixed support C to the upper and lower structures G and B, the support body 1 of the Okasei support is divided in advance, that is, the bearing plate 10 and the pressing plate 13 are arranged on the lower structure B side. The housing 3 is placed on the side of the upper structure G, and after adjusting the position, the support body 1 is integrated, and the ball stud 7 is attached to the upper and lower structures G,
Although the manner in which it is fixed to B is shown, only the anchor bolt 2 is placed in advance on the upper structure G side, and the fixed support C is placed on the lower structure B side with a mounting hole provided in the housing 3 of the support body, and the position is adjusted. After adjustment, the anchor bolt 2 arranged on the upper structure G is inserted into the mounting hole of the support body and fixed with a fastener such as a nut, and then fixed to the upper and lower structures G and B, or the fixed support is attached to the upper structure G side. Fix the support 1 of C in advance,
A holding body 9 is disposed on the lower structure B side, and after position adjustment, the supporting body 1 is fixed to the holding body 29 and then fixed to the upper and lower structures G and B, for example.

The present invention consists of the above-described configuration and fixing method, and has a simple structure that allows the upper structure to be moved vertically (up and down) and horizontally (
Since the position (left and right) can be easily adjusted, the complexity of mounting when cold is removed and manufacturing is also easy.The load applied to the upper structure can be easily transmitted to the lower structure such as the piers, and the upper lift force can be easily adjusted. It has great effects, such as being able to adequately deal with the situation.

[Brief explanation of the drawing]

Fig. 1 is a front view of a monorail double-track track, Fig. 2 is a partially longitudinal front view showing the fixed support of the present invention, Fig. 3 is a side view thereof, and Fig. 4 is A-A in Fig. 2. Line sectional view, 5th
The figure is a perspective view of the holder. 1: Support body 3: Housing, 4: Bottom, 5, 31:
Threaded part, 6: Closing recessed part, 7: Ball stud, 8: Ball part, 9: Shank part, 10: Bearing plate, 13: Pressing plate, 20
: Anchor plate, 21: Fixing bolt, 22. 26: Mounting hole, 23: Backing plate, 24 Three base plates, 25: Pin, 27: First eccentric board, 28: Second eccentric board
Plate, 29: Holder 30: Through hole, 32: Fixing part, 3
3: Bolt hole 38: Washer. Figure 1 Figure 5 Figure 2 Figure 4, Figure 3

Claims (1)

[Claims] 1. A support body containing ball studs that is fixed to an upper structure such as a bridge girder is held by a holder that is fixed via a base plate to an anchor plate that is embedded and fixed in advance in a lower structure such as a bridge pier. In the fixed bearing, the base plate is formed with a pin projecting upward at the center, a first core plate is rotatable about the pin axis on the pin, and a first eccentric plate is rotatable around the pin axis. A second eccentric plate is rotatably fitted around the first eccentric plate, and these eccentric plates are placed on the base plate.The holder has a through hole in the center and a bridge between the through holes. Fixing parts facing each other in the direction perpendicular to the axis and having threaded parts on the inner surface are formed, and the holding body is placed on the base plate with the eccentric plate fitted into the through hole thereof, and the fixing bolt is mounted on the base plate. The support is fixed to the lower structure by a housing having an opening with a threaded portion at one end and a concave spherical surface on the bottom surface, a spherical portion that slides into contact with the concave spherical surface of the housing, and the spherical portion. A ball stud that is integrally formed with a shank portion having a threaded portion, the shank portion protruding from the housing opening, and a support that slides and supports the ball portion of the ball stud on the shank portion side within the housing. It is composed of a pressure plate and a pressure plate that is screwed onto the threaded part of the housing and presses the support pressure plate. A fixed support characterized by being screwed and fixed to a fixed part. 2. A fixed support in which a support body containing ball studs that is fixed to an upper structure such as a bridge girder is held by a holder that is fixed via a base plate to an anchor plate that is embedded and fixed in advance in a lower structure such as a bridge pier, A pin protruding upward is formed in the center of the base plate, a first eccentric plate is rotatable around the pin axis on the pin, and a second eccentric plate is attached on the first eccentric plate. Each of these eccentric plates is rotatably fitted around the first eccentric plate, and these eccentric plates are placed on a base plate. Fixing parts facing each other and having a threaded part on the inner surface are formed, the holding body is placed on the base plate with the eccentric plate fitted in its through hole, and the supporting body has a threaded part at one end. It consists of a housing with a concave spherical surface on the bottom surface, a spherical part that slides into contact with the concave spherical surface of the housing, and a shank part that is integrated with the spherical part and has a threaded part, and the shank part is connected to the housing. A ball stud arranged to protrude from the opening, a bearing plate that slides and supports the ball part on the shank side of the ball stud in the housing, and a bearing plate that is screwed onto the threaded part of the housing to press the bearing plate. The supporting body is fixed to the upper structure with the housing, and the shank part is screwed and fixed to the fixing part of the holding body, and the holding body is fixed to the holding body. A washer having an uneven spherical surface disposed on the upper surface of the holder at an end on the holder side, passing through a bolt hole provided in the base plate and an attachment hole larger than the bolt hole provided in the base plate and the anchor plate. and a fixing bolt fixed to the lower structure via a backing plate and a washer having a concave-convex spherical surface disposed to cover the lower surface of the mounting hole at the end on the anchor plate side. A fixed bearing characterized by: 3. An anchor plate provided with a mounting hole is fitted with a fixing bolt into the mounting hole, and the end of the bolt is fixed to the anchor plate and buried in the lower structure, and the anchor plate is provided with a pin projecting upward in the center and has a mounting hole. a first step of fixing the provided base plate to the lower structure by inserting the fixing bolt into the mounting hole; a first step of fitting the first eccentric plate to the pin of the base plate so as to be rotatable around the pin axis; a second step of fitting a second eccentric plate into the first eccentric plate so as to be rotatable around the first eccentric plate and placing the eccentric plate on the base plate; and a through hole, a fixing part, and a bolt hole. The holding body is placed on the base plate by fitting the eccentric plate into the through hole, the fixing bolt is inserted into the bolt hole, and the ball stud is fitted with the bearing plate and the pressing plate of the support body in the fixing part. The third step is holding the ball stud in the shank part, and adjusting the horizontal position of the ball stud held in the holding body fixing part by rotating the eccentric plate located in the through hole of the holding body. A fourth step of adjusting the vertical position of the ball stud by rotating it and fixing the holder to the lower structure via the base plate with a fixing bolt, and a support fixed to the upper structure on the ball stud. A method for installing a fixed support comprising a fifth step of fitting a housing of the body, and then screwing and fixing a bearing plate and a pressing plate fitted into the ball stud to the housing with the pressing plate. .