CN107338723B

CN107338723B - Pull-press ball-shaped support

Info

Publication number: CN107338723B
Application number: CN201710783856.4A
Authority: CN
Inventors: 韩庆国; 冯国玉; 杜希震; 王守仁; 王高琦; 王立虎; 张晓东; 颜新宇
Original assignee: Shandong Longxiang New Material Technology Co ltd
Current assignee: Shandong Longxiang New Material Technology Co ltd
Priority date: 2017-09-04
Filing date: 2017-09-04
Publication date: 2023-05-09
Anticipated expiration: 2037-09-04
Also published as: CN107338723A

Abstract

The invention discloses a pull-press spherical support, which comprises: a lower support plate; a middle steel lining plate; a lower pressing plate; a second damping block; a second slide plate; an upper support plate; an upper pressing plate which is arranged around the spherical crown lining plate and is fixed on the middle steel lining plate, and is provided with a first vertical part extending upwards and a first pressing part extending centripetally from the upper end of the first vertical part; the first damping block is assembled on the lower surface of the first pressing part; and the first sliding plate is an annular part and is arranged at a position of aligning the section plane with the assembly position of the first damping block. The pulling and pressing spherical support is relatively stable, and the tensile constraint structure of the pulling and pressing spherical support has small influence on rotation and sliding of the spherical support.

Description

Pull-press ball-shaped support

Technical Field

The invention relates to a pull-press spherical support.

Background

The bridge support mainly bears pressure, and meanwhile, certain tensile force is required to be borne, the conventional plate-type rubber support, the basin-type rubber support and the spherical support can be made into tension-compression supports, and the conventional tension-compression supports are usually formed by adding a tension bolt in the supports, and the tension bolt bears the tensile force. However, the tension bolts mainly realize the bearing of tension by connecting the upper and lower support plates in the height direction of the bridge support, thereby limiting the rotation angle and displacement of the spherical support, for example, and seriously affecting the overall performance of the support.

Chinese patent document CN103104031a discloses a tension-compression-resistant shock-insulation support, which adds a sphere on the basis of single sphere cooperation of a spherical support, namely, provides a middle seat plate, and the upper and lower surfaces of the middle seat plate respectively form a ball socket. The middle seat board is provided with two orthogonal guide grooves, and the upper support board is provided with an upper draw hook which can slide in the guide groove in one direction, so that the upper support board can be restrained in the vertical direction; and the lower support plate is provided with a lower draw hook which can slide in the guide groove in the other direction, so that the middle support plate can be restrained in the vertical direction. By the structure, the spherical support has the functions of pulling and pressing, and has the sliding function in two orthogonal directions based on the movement of the drag hook in the guide groove. However, the bi-spherical structure can make the support height higher, and friction pair is too many, and overall stability is poor. And the drag hook has only sliding freedom degree in the guide groove, so that the rotation capacity of the spherical support can be limited.

Chinese patent document CN102261037a discloses a vertical elastic tension-compression support, structurally similar to a basin-type support, which realizes horizontal displacement of the support by relative sliding between wear plates and sliding plates, and realizes a rotation angle depending on deformation of a pressure-bearing damper. The sliding structure between the lower support plate (the sliding plate in the document) and the wear-resisting plate assembled on the lower surface of the steel basin is only one of the sliding structures, and the sliding structure is lower, so that the stability is better. However, the existence of the pressing plate can cause the bias voltage between the wear-resisting plate and the sliding plate, and the symmetrical part of the pressing plate can generate stronger retardation. In addition, the pressure-bearing damper is easy to deviate due to the fact that the pressure-bearing damper is used for realizing the corner, and in addition, the pressure-bearing damper can generate unrecoverable deformation due to different bearing loads at all positions along the time, so that the integral bearing capacity of the support is affected.

Chinese patent document CN105908622a discloses a pull-out resistant spherical support, which also has two spherical friction structures, and the whole is higher, and the stability is not easy to be ensured. Meanwhile, the structure of the spherical support for realizing tensile strength is realized through a pressing plate structure, and the friction performance is not easy to ensure because the pressing plate and the pressed part are pressed without a medium.

Disclosure of Invention

The invention aims to provide a pulling and pressing spherical support which is relatively stable, and the tensile constraint structure of the pulling and pressing spherical support has small influence on rotation and sliding of the spherical support.

According to an embodiment of the present invention, there is provided a pulling and pressing ball type mount including:

the lower support plate is a plate, and the upper surface of the lower support plate is provided with a first surface;

the lower surface of the middle steel lining plate is provided with a second surface, and a first friction structure is formed between the second surface and the first surface; the bottom of the middle steel lining plate is provided with a flange, and the upper end face of the middle steel lining plate is provided with a ball socket;

the lower pressing plate is arranged around the middle steel lining plate and fixed on the lower support plate, and is provided with a second vertical part extending upwards and a second pressing part centripetally extending from the upper end of the second vertical part;

the second damping block is assembled on the lower surface of the second pressing plate;

the second sliding plate is an annular piece and is arranged at a position where the upper surface of the flange is aligned with the assembly position of the second damping block;

the lower surface of the upper support plate is connected with a spherical crown lining plate, and the spherical surface of the spherical crown lining plate is arranged below and matched with the ball socket to form a second friction structure; the section plane of the spherical crown lining plate is on the upper part;

an upper pressing plate which is arranged around the spherical crown lining plate and is fixed on the middle steel lining plate, and is provided with a first vertical part extending upwards and a first pressing part extending centripetally from the upper end of the first vertical part;

the first damping block is assembled on the lower surface of the first pressing part; and

the first sliding plate is a ring-shaped member and is arranged at a position of aligning the section plane with the assembly position of the first damping block.

The pull-press ball-type support is characterized in that the cross section area of the first sliding plate is larger than that of the second sliding plate.

Optionally, the cross-sectional area of the first sliding plate is 1.5-3 times that of the second sliding plate.

Optionally, the second standing part is used for restricting the sliding range of the middle lining plate;

accordingly, the first friction structure is configured to:

a third sliding plate is arranged on the lower support plate within the constraint range of the second vertical part;

and a stainless steel plate which is opposite to the third sliding plate is arranged on the lower surface of the middle steel lining plate.

Optionally, the second standing part and the second pressing part are both ring bodies;

the second upright portion is provided with a bolt hole with a vertical axis for assembling the second upright portion on the lower support plate.

Optionally, an outer rim is disposed at the bottom periphery of the second upright portion.

Optionally, a reinforcing rib is arranged between the outer edge ring and the outer wall surface of the second vertical part.

Optionally, a dust-proof coaming for shielding the first friction structure and the second friction structure is mounted on the lower pressing plate.

Optionally, the height of the first stand is one third to one half of the height of the second stand.

Optionally, the interface member of the second friction structure is a curved polytetrafluoroethylene plate.

According to the embodiment of the invention, the spherical support is provided with two friction structures, and is used as a basic component of the spherical support, namely, the spherical crown lining plate forming the second friction structure is in static connection with the upper support plate, no movable structure exists between the spherical crown lining plate and the upper support plate, and the spherical crown lining plate extends downwards, so that the two friction structures are lower, and the overall stability is relatively good. The tensile strength is mainly embodied between movable parts, and represents the vertical constraint on a friction structure, the vertical constraint is realized by adopting a pressing plate in the embodiment of the invention, and the pressing plate is not simply pressed by the structure of a vertically constraint related movable part, but is provided with a damping block and a sliding plate, so that on one hand, the rigid impact can be avoided through damping, the shock absorption is improved, and the energy consumption is provided. The sliding plate is used for reducing friction coefficient and improving the response capability of the support to the deformation of the beam body.

Drawings

Fig. 1 is a schematic diagram of a semi-sectional structure of a pull-press ball-type support according to an embodiment of the invention.

In the figure: 1. dustproof coaming, 2, upper bracket plate, 3, lower clamp plate, 4, upper bracket plate anchor bolt, 5, upper clamp plate, 6, first damping block, 7, first annular polytetrafluoroethylene plate, 8, connector, 9, spherical crown liner plate, 10, curved polytetrafluoroethylene plate, 11, lower bracket plate anchor bolt, 12, lower bracket plate, 13, planar polytetrafluoroethylene plate, 14, stainless steel plate, 15, middle steel liner plate, 16, second annular polytetrafluoroethylene plate, 17, second damping block.

Detailed Description

Referring to fig. 1 of the drawings, the basic structure of the illustrated pull-press ball type bearing is still an up-down structure as in the conventional bridge bearing, in which an upper bearing plate 2 is fixedly connected to, for example, the bottom of a bridge body by an upper bearing plate anchor 4, and a lower bearing plate 12 is fixedly connected to, for example, a bridge pier by a lower bearing plate anchor 11, and a certain friction structure is provided between the upper bearing plate 2 and the lower bearing plate 12 in response to, for example, deformation and movement of the bridge body.

In general, for spherical supports, the centripetal and centrifugal forces are determined by determining the axial and radial directions, based on the normal axis of the cross-sectional plane of the spherical crown liner 9 in the mounted state, constrained by its spherical crown liner 9.

With respect to the spherical crown liner 9, there are two main ways of assembling at present, one is normal assembling and the other is inverted assembling, wherein normal assembling means that the cross section plane of the spherical crown liner 9 is up, the crown is down, and inverted assembling means that the structure shown in fig. 1 belongs to normal assembling structure.

In general, for a positive mounting structure, the upper support plate is carried between the cross-sectional plane and the upper support plate through a friction structure, which tends to cause the height of the movable part to deviate upwards, and the stability of the bridge support is affected. In the embodiment of the invention, an intermediate steel lining plate 15 is added to bias the movable friction structure downwards, so that the height of the friction structure can be reduced as a whole, and the stability of the spherical support is improved.

In addition, in the structure shown in fig. 1, the pressing member is fitted by a certain friction structure, and the influence of the pressing member on the sliding and rotating ability of the ball mount is reduced.

In particular, referring to fig. 1 of the drawings, the lower seat plate 12 is different from that of a conventional ball-type seat, which requires a boss for providing a ball socket to be constructed, and has a relatively high height even in a flip-chip structure.

In the structure shown in fig. 1, the lower bracket plate 12 is a plate-shaped member with anchor holes formed at the periphery thereof for mounting the lower bracket anchor 11, and is anchored to, for example, a bridge pier by the lower bracket anchor 11. The lower seat plate 12 constituting the plate member has a relatively low center of gravity and is directly seated on, for example, a bridge pier, and a sliding (also called moving) friction structure constructed on the upper surface (denoted as the first surface) thereof has a relatively low position and a relatively good stability.

An intermediate steel backing plate 15 is provided, which intermediate steel backing plate 15 mainly transfers the moving friction structure underneath, thereby reducing its height. The body of the intermediate steel lining 15 is of a cylindrical structure with a flange at the lower end, which serves as a place where the intermediate steel lining 15 is pressed.

The upper end of the main body portion of the intermediate steel lining plate 15 is provided with a ball socket for constructing a spherical friction structure, which is noted as a second friction structure. The friction structure formed between the lower surface (denoted as the second surface) of the intermediate steel lining 15 and the first surface is a sliding friction structure, denoted as the first friction structure.

With respect to the flange, which is mainly used as flange in the mechanical field, also called flange, in the embodiment of the present invention, the flange is used to construct the aforementioned pressed structure, and should have a distance protruding from the intermediate steel lining plate 15, i.e. a distance extending radially, to determine the movement range of the intermediate steel lining plate 15. The upper surface of the flange is also a plane, the pressure angle generated by pressing is generally 90 degrees, and the pressing effect is good.

With respect to the concrete structure of the pressing flange, see the left middle part of fig. 1 of the specification, the cross section of the lower pressing plate 3 in the drawing is a substantially inverted L-shaped structure shown in the drawing, the basic structure of which has a second standing part extending upward for use as a mounting seat for the lower pressing plate 3 and determining the pressing height. Further, at the end of the second standing portion extending upward, i.e., the upper end of the standing portion thereof, a second pressing portion is centripetally extended, and the second pressing portion should have a portion located above the flange so as to be able to press the flange.

Furthermore, with respect to the lower press plate 3, it is desirable to have a press face that is relatively uniformly dispersed, the dispersion being in an annular arrangement around the intermediate steel backing plate 15 or being an integral body, for example, the second press section being an annular member or structure.

The lower pressure plate 3 is spaced from the upper surface of the flange by a distance different from the direct contact between the pressure plate and the pressed member described in the background art, and in the structure shown in fig. 1, the second damper 17, and the first damper 6 shown in fig. 1 are each made of a member having a certain elastic capability.

It should be appreciated that damping members have been widely used in bridge bearings, and that the damping members are relatively stiff materials, such as spring steel, and therefore have a relatively limited amount of deflection.

Below the damping member, a slide plate, shown in fig. 1 as a second annular polytetrafluoroethylene plate 16, is provided below the second damping block 17 for antifriction, as shown in the figure, to mitigate the effect on the bridge bearing friction structure when the lower pressure plate 3 is provided.

In the figure, regarding the upper support plate 2, in the figure, the upper support plate 2 and the spherical cap liner plate 9 are in an integral structure, and no dynamic connection structure exists, so that the integral stability can be ensured.

The integral structure may be cast integrally or cast separately and then welded.

The spherical crown liner plate 9 has the cross section surface at the upper part and the crown part at the lower part, and the crown part and the ball socket are matched to form a second friction structure, namely a spherical friction structure.

The second friction structure also requires pressing means for controlling the second friction structure, and in particular, as shown in fig. 1, an upper platen 5 is provided, the upper platen 5 being substantially identical in structure and substantially uniform in distribution to the lower platen 3, the upper platen 5 being required to be laid around the spherical cap liner 9 and being fixed to the intermediate steel liner 15, also having a substantially inverted L-shaped structure with a first upright portion extending upward and a first pressing portion extending centripetally from the upper end of the first upright portion.

Accordingly, referring to the description about the lower platen 3, the upper platen 5 is provided with the first damper block 6, and the first slide plate, which is configured as a ring member, is installed at a position where the sectional plane is aligned with the assembly position of the first damper block 6.

In the configuration shown in fig. 1, the cross-sectional area of the first slide is larger than the cross-sectional area of the second slide, and in this configuration, load distribution is facilitated. In contrast, the area of the upper and lower surfaces of the first slider is limited by the layout range, and the area is relatively small.

Furthermore, since the position of the upper pressure plate 5 is relatively high, the support stability of the first annular polytetrafluoroethylene plate 7 having a relatively large cross-sectional area is relatively good in order to obtain relatively good support stability.

Preferably, the first slide plate cross-sectional area is 1.5 to 3 times, preferably 2.5 times, the second slide plate cross-sectional area, and the area tends to be chosen large, where the assembly space permits.

In the structure shown in fig. 1, the lower platen 3 restricts the area of the planar polytetrafluoroethylene plate 13, and the planar polytetrafluoroethylene plate 13 serves as a slide plate. The portion of the lower platen 3 used to constrain the area of the planar polytetrafluoroethylene sheet 13 is its second elevation, which creates a stop for the intermediate steel liner 15, thereby determining the maximum distance that the intermediate steel liner 15 will move. Whereas the planar polytetrafluoroethylene plate 13 makes full use of the area defined by the second standing portion, it is seen that the edge of the planar polytetrafluoroethylene plate 13 engages with the inner side surface of the second standing portion.

Accordingly, the first friction structure is configured to:

the upper plane polytetrafluoroethylene plate 13 is used as a sliding plate, and the sliding surface determined by the sliding plate is restrained by the second vertical part.

The sliding member on the flat polytetrafluoroethylene plate 13 is a stainless steel plate 14 shown in the drawing, and has a relatively small friction coefficient therebetween, for example, 0.010.

In order to facilitate assembly, the second vertical part and the second pressing part are ring bodies;

The ring body also has higher static rigidity, so that the ring body has better constraint capacity, particularly bolts distributed on the same ring body can provide reaction force when one side of the ring body is stressed, and the overall reliability is better.

In order to improve the overall static rigidity, an outer edge ring is arranged on the periphery of the bottom of the second vertical part, and the outer edge ring is perpendicular to the second vertical part, so that the overall torsion resistance section coefficient can be improved.

In addition, since the outer rim is also a rim body, the rim body is stronger in static rigidity than a single separate component based on mutual involvement of the respective portions.

Further, in order to increase the rigidity of the lower pressure plate 3, a reinforcing rib is provided between the outer peripheral ring and the outer wall surface of the second standing portion.

The above-described means for increasing the rigidity of the lower platen 3 can also be applied to the upper platen 5.

The lower platen 3 and the upper platen 5 are both ring structures, and have a certain shielding performance because of, for example, the second platen on the lower platen 3 being turned up centripetally. With friction structures, however, a certain amount of lubricant is typically enclosed to reduce the coefficient of friction of the friction surface. In addition, the friction surface should reduce the ingress of dust to reduce the impact on the coefficient of friction. The upper pressing plate 3 and the upper pressing plate 5 still have good sealing performance under the condition that sealing rings are not arranged separately.

In some preferred embodiments, as shown in fig. 1, a dust-proof shroud 1 for shielding the first friction structure and the second friction structure is mounted on the lower platen 3.

The conventional bridge supports are also generally provided with dust-proof enclosures, except that the dust-proof enclosures are generally mounted on the upper or

lower support plates

3, 12, wherein the lower support plates 12 are fixedly arranged. In the embodiment of the present invention, it is provided on the lower platen 3, so that the disassembly and assembly are facilitated, and the restricted range becomes small.

In some embodiments, the height of the first stand is one third to one half of the height of the second stand to reduce the overall structure and to accommodate the size of the two friction structures.

In addition, the interface member of the second friction structure is a curved polytetrafluoroethylene plate 10.

Claims

1. A pull-push ball-type support, comprising:

the upper support plate is fixedly connected with the lower surface of the upper support plate, and the spherical surface of the spherical cap lining plate is arranged below and matched with the ball socket to form a second friction structure; the section plane of the spherical crown lining plate is on the upper part;

the first sliding plate is an annular piece and is arranged at a position where the section plane is aligned with the assembly position of the first damping block;

the height of the first vertical part is one third to one half of the height of the second vertical part;

the interface component of the second friction structure is a curved polytetrafluoroethylene plate.

2. The pull-push ball mount of claim 1 wherein the cross-sectional area of the first slide plate is greater than the cross-sectional area of the second slide plate.

3. The pull-push spherical support according to claim 2, wherein the cross-sectional area of the first slide plate is 1.5-3 times the cross-sectional area of the second slide plate.

4. A pull-press ball-type support according to any one of claims 1 to 3, wherein the second standing portion is used for restricting a sliding range of the intermediate lining plate;

accordingly, the first friction structure is configured to:

5. The pull-push spherical support according to claim 4, wherein the second standing portion and the second push portion are both ring bodies;

6. The pull-push ball mount according to claim 5, wherein an outer rim is provided at the bottom periphery of the second upright portion.

7. The pull-push ball mount according to claim 6, wherein a reinforcing rib is provided between the outer rim and the outer wall surface of the second standing portion.

8. The pull-press ball mount according to claim 4, wherein a dust-proof shroud for shielding the first friction structure and the second friction structure is mounted on the lower pressure plate.