Novel slope-adjusting anti-beam-falling anti-drawing support

Abstract

The utility model belongs to the technical field of bridge supports, and particularly relates to a novel slope-adjusting anti-beam-falling anti-drawing support. The anti-beam-falling anti-drawing support comprises a support body composed of an upper support plate, a middle pendulum and a lower support plate, pin shafts are arranged on the two longitudinal sides and the two transverse sides of the middle pendulum respectively, positioning bosses are arranged on the two longitudinal sides of the bottom of the upper support plate and the two transverse sides of the top of the lower support plate respectively, sliding grooves are formed in the inner sides of the positioning bosses, and the pin shafts are arranged in or penetrate through the sliding grooves respectively; the internal longitudinal and transverse crossed limiting connection of the anti-falling beam anti-drawing support has the characteristics of flexible rotation adjustment and firm longitudinal connection.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge supports, and specifically relates to a novel slope-adjusting, beam-falling-proof and anti-pulling support. Background Art

[0002] Bridge bearings are important structural components that connect the superstructure and substructure of a bridge. They can reliably transmit the reaction force and deformation (displacement and rotation) of the superstructure to the substructure, so that the actual stress conditions of the structure are consistent with the theoretical calculations.

[0003] At present, the application of assembled pile-sheet roadbed in bridge engineering is becoming more and more widespread, and it has shown significant advantages in bearing capacity, construction speed, environmental protection and energy saving, adaptability and cost saving. The assembled pile-sheet roadbed has a fast construction speed and short construction period through factory prefabrication and assembly construction, which greatly shortens the construction period. Compared with the traditional roadbed structure, the assembled pile-sheet roadbed is more environmentally friendly and energy-saving. The assembled sheet pile structure is assembled with metal connectors, and the installation process is simple and fast, which can greatly save construction labor and material costs.

[0004] As the assembled pile-slab roadbed is composed of prefabricated pile foundations and beam-slabs, there is a certain amount of deflection during the installation process, and the slope needs to be adjusted in the longitudinal and transverse directions, which puts higher requirements on the existing friction pendulum bearings; in addition, due to its light weight, the bearings used for the pile foundations and beam-slabs need to have a certain tensile resistance. my country is located between the Pacific Rim seismic belt and the Eurasian seismic belt, and seismic activity is very active. During an earthquake, the bridge structure will produce a large relative displacement. When the relative displacement exceeds the beam end shelving length, the beam will fall, causing irreparable and serious damage to the bridge structure. Utility Model Content

[0005] The utility model aims to provide a novel anti-falling beam anti-pulling support with internal longitudinal and transverse cross-limiting connections, which has the characteristics of flexible rotation adjustment and reliable longitudinal connection.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A new type of slope-adjusting and anti-falling beam anti-pullout support, including a support body consisting of an upper support plate, an intermediate pendulum, and a lower support plate, characterized in that pins are respectively arranged on both longitudinal and transverse sides of the intermediate pendulum, positioning bosses are respectively arranged on both longitudinal sides of the bottom of the upper support plate and on both transverse sides of the top of the lower support plate, a slide groove is arranged on the inner side of the positioning boss, and the pins are respectively placed in or pass through the slide groove.

[0008] Additional technical features of the novel anti-pullout support for slope-adjusting and anti-falling beams include:

[0009] The upper and lower surfaces of the middle pendulum are respectively vertical cylindrical convex surfaces, the cylindrical convex surface of the upper surface cooperates with the cylindrical groove of the bottom surface of the upper support to form a transverse rotation friction pair; the cylindrical convex surface of the lower surface cooperates with the cylindrical groove of the top surface of the lower support plate to form a longitudinal rotation friction pair;

[0010] The middle pendulum is a rectangular block, and a movement gap is set between the two sides of the middle pendulum in the longitudinal and transverse directions and the positioning bosses of the upper support plate and the lower support plate, respectively. The slide groove in the positioning boss is an arc-shaped through groove, and the center of the arc-shaped through groove on both sides of the longitudinal and transverse directions coincides with the center of the cylinder of the transverse rotating friction pair and the longitudinal rotating friction pair respectively;

[0011] The upper and lower surfaces of the middle pendulum are spherical crown curved surfaces, respectively, and the spherical crown curved surfaces cooperate with the spherical grooves on the bottom surface of the upper support plate and the top surface of the lower support plate to form a spherical rotating friction pair;

[0012] ——Limiting flanges are arranged at the four corners of the bottom surface of the upper support plate or the four corners of the top surface of the lower support plate, and the positioning boss is placed between adjacent limiting flanges and has a gap with the limiting flanges;

[0013] ——An upper anchor bolt assembly is arranged on the upper surface of the upper bearing plate, which is connected to the bridge beam body; a lower anchor bolt assembly is arranged on the lower surface of the lower bearing plate, which is connected to the bridge pier.

[0014] Compared with the prior art, the novel slope-adjusting and anti-beam pull-out support provided by the utility model has the following advantages: pins are respectively arranged on the longitudinal and transverse sides of the middle pendulum of the device, positioning bosses are respectively arranged on the longitudinal sides of the bottom of the upper support plate and the transverse sides of the top of the lower support plate, slide grooves are arranged on the inner sides of the positioning bosses, and the pins are respectively placed in or pass through the slide grooves, that is, the pins in the longitudinal and transverse directions of the middle pendulum are respectively engaged with the positioning boss slide grooves on the sides of the upper support plate and the lower support plate, thereby solving the problem of weak vertical tensile performance of the traditional friction pendulum pre-slope adjustment function support. The vertical integrated structure of the bridge support has high strength, and has better pull-out resistance and anti-beam drop performance. Due to the pull-out resistance restrictions in the longitudinal and transverse directions, the pre-slope adjustment effect of the middle pendulum in the longitudinal and transverse directions is more stable, and it has the advantages of simple and compact structure, safe and convenient use, economy and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model anti-falling beam anti-pulling support;

[0016] Figure 2 is a schematic diagram of the cross-section (transverse direction b) structure of the support;

[0017] Figure 3 It is a schematic diagram of the exploded structure of the upper support plate and the middle pendulum of the support;

[0018] Figure 4 This is a schematic diagram of the decomposed structure of the lower support plate and the middle pendulum of the support. DETAILED DESCRIPTION

[0019] The structure and working principle of the novel anti-falling beam anti-pulling support provided by the utility model are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, unless otherwise specified, the terms "horizontal / longitudinal", "up / down", "top / bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0021] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set / provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0022] like Figure 1-Figure 4 As shown, the structure of the novel anti-drop beam anti-pullout support includes a support body composed of an upper support plate 1, an intermediate pendulum 2, and a lower support plate 3. Pins (41, 42) are respectively arranged on both sides of the longitudinal direction a and the transverse direction b of the intermediate pendulum 2. Positioning bosses (51, 52) are respectively arranged on both sides of the longitudinal direction of the bottom of the upper support plate 1 and on both sides of the transverse direction of the top of the lower support plate 3. Slide grooves (61, 62) are arranged on the inner sides (51, 52) of the positioning bosses. The pins (41, 42) are respectively placed in or pass through the slide grooves (61, 62).

[0023] Its working principle is as follows: the support body is composed of an upper support plate 1, an intermediate pendulum 2, and a lower support plate 3. Different from the traditional seismic isolation friction pendulum support structure, pins 41 are arranged on both sides of the longitudinal direction a of the intermediate pendulum 2, and positioning bosses 51 are arranged on both sides of the longitudinal direction of the bottom of the upper support plate 1. A slide groove 61 is arranged on the inner side of the positioning boss 51. The slide groove 61 can be a through groove or a blind groove. The longitudinal pin 41 is placed in or passes through the slide groove 61 to achieve vertical limiting of the upper support plate 1 and the intermediate pendulum 2; pins 42 are also arranged on both sides of the transverse direction b of the intermediate pendulum 2, and positioning bosses 52 are also arranged on both sides of the top of the lower support plate 3. A slide groove 62 is also arranged on the inner side of the positioning boss 52, and the transverse pin 42 is placed in or passes through the slide groove 62 to achieve vertical limiting of the lower support plate 3 and the intermediate pendulum 2, that is, through the cooperation between the pins in the longitudinal and transverse directions of the intermediate pendulum 2 and the slide groove of the positioning boss, the vertical integration of the support body is realized, the pull-out resistance of the support is improved, and the problem of falling beams is further avoided.

[0024] In the structure constituting the above-mentioned novel anti-falling beam anti-pulling support,

[0025] ——As a preferred implementation method, Figure 3 , Figure 4 The upper and lower surfaces of the intermediate pendulum 2 are respectively vertical and horizontal cylindrical convex surfaces (21, 22), and the cylindrical convex surface 21 on the upper surface cooperates with the cylindrical groove 11 on the bottom surface of the upper support to form a transverse rotation friction pair 23; the cylindrical convex surface 22 on the lower surface cooperates with the cylindrical groove 31 on the top surface of the lower support plate 3 to form a longitudinal rotation friction pair 24, and the rolling friction structure intersecting the vertical and horizontal directions realizes the pre-adjustment slope function of the bridge support in the vertical and horizontal directions;

[0026] The friction pair can be composed of a stainless steel slide plate and a modified polytetrafluoroethylene wear-resistant plate, which improves the sliding efficiency and working life between the support plate and the middle pendulum 2, reduces the maintenance cost of the support, is safe, practical and has good economic benefits;

[0027] ——Furthermore, the above-mentioned middle pendulum 2 is a rectangular block, and a movement gap is set between the two sides of the middle pendulum 2 in the longitudinal and transverse directions and the positioning bosses of the upper support plate 1 and the lower support plate 3 respectively. The sliding grooves (61, 62) in the positioning bosses (51, 52) are arc-shaped through grooves, and the centers of the arc-shaped through grooves on both sides in the longitudinal and transverse directions coincide with the centers of the cylinders of the transverse rotation friction 23 and the longitudinal rotation friction pair 24 respectively, that is, the upper support plate 1 and the middle pendulum 2 can realize both transverse rotation friction and longitudinal sliding along the cylindrical surface, and the lower support plate 3 and the middle pendulum 2 can realize both longitudinal rotation friction and transverse sliding along the cylindrical surface, which meets the requirements of the bridge bearing rotation angle and displacement. Compared with the traditional spherical bearing, the present bearing will not be pre-deflected during installation, and the upper support plate 1, the lower support plate 3 and the center of the middle pendulum 2 will not produce obvious rotation, which avoids the displacement sliding surface and the bearing plate from forming an angle to hinder the normal function of the bearing displacement and rotation angle;

[0028] ——In another embodiment, the upper and lower surfaces of the middle pendulum 2 are spherical crown curved surfaces, which cooperate with the spherical grooves on the bottom surface of the upper support plate 1 and the top surface of the lower support plate 3 to form a spherical rotating friction pair, that is, the upper and lower sides of the middle pendulum 2 are spherical rotations, which can be flexibly rotated at multiple angles, have strong seismic isolation capabilities, further improve the applicability of the bridge bearing, and meet the use conditions of various working conditions;

[0029] ——Preferably, limiting flanges are provided at the four corners of the bottom surface of the upper support plate 1 or the four corners of the top surface of the lower support plate 3, and the positioning bosses are placed between adjacent limiting flanges and have gaps with the limiting flanges. In this embodiment, limiting flanges 71 are provided at the four corners of the bottom surface of the upper support plate 1, which can simultaneously limit the longitudinal sliding a and transverse rolling b between the upper support plate 1 and the middle pendulum 2. The limiting flange 71 cooperates with the positioning boss 52 on the top surface of the lower support plate 3 and has a gap 72, which can simultaneously limit the transverse sliding b and longitudinal rolling a between the lower support plate 3 and the middle pendulum 2. The above-mentioned longitudinal and transverse intersecting limiting structure has a gap 72 that satisfies sliding and rolling, and can prevent the movement amplitude from being too large, thereby avoiding the problem of falling beams;

[0030] ——Preferably, an upper anchor bolt assembly 81 is provided on the upper surface of the upper bearing plate 1, which is connected to the bridge beam; a lower anchor bolt assembly 82 is provided on the lower surface of the lower bearing plate 3, which is connected to the bridge pier. The anchoring structure is easy to process and manufacture, easy to assemble and firmly connected, which improves the stability of the bearing, has a long working cycle, and is safe, economical and durable.

[0031] The above-described implementation modes are only used to illustrate the technical solution of the utility model, and are not limiting conditions for the implementation of the utility model. Therefore, any other modifications or equivalent replacements of configuration dimensions and internal structures made to the technical solution of the utility model, as long as they do not depart from the spirit and scope of the technical solution of the utility model, should be included in the scope of the claims of the utility model.

Claims

1. A new type of anti-pullout support for slope adjustment and anti-falling beam, comprising a support body consisting of an upper support plate, an intermediate pendulum, and a lower support plate, characterized in that: Pins are respectively arranged on both longitudinal and transverse sides of the middle pendulum, positioning bosses are respectively arranged on both longitudinal sides of the bottom of the upper support plate and on both transverse sides of the top of the lower support plate, and sliding grooves are arranged on the inner sides of the positioning bosses, and the pins are respectively placed in or pass through the sliding grooves.

2. According to claim 1, the novel anti-pullout support for slope-adjusting and anti-falling beams is characterized by: The upper and lower surfaces of the middle pendulum are respectively cylindrical convex surfaces that are vertical and horizontal, and the cylindrical convex surface of the upper surface cooperates with the cylindrical groove of the bottom surface of the upper support to form a transverse rotation friction pair; The cylindrical convex surface on the lower surface cooperates with the cylindrical groove on the top surface of the lower support plate to form a longitudinal rotation friction pair.

3. According to claim 2, the novel anti-pullout support for slope-adjusting and anti-falling beams is characterized by: The middle pendulum is a rectangular block, and a movement gap is set between the positioning bosses of the upper support plate and the lower support plate on both sides in the longitudinal and transverse directions respectively. The sliding groove in the positioning boss is an arc-shaped through groove, and the center of the arc-shaped through groove on both sides in the longitudinal and transverse directions coincides with the cylindrical center of the transverse rotating friction pair and the longitudinal rotating friction pair respectively.

4. The novel anti-pullout support for slope-adjusting and anti-falling beams according to claim 1 is characterized by: The upper and lower surfaces of the middle pendulum are spherical crown surfaces respectively, and the spherical crown surfaces cooperate with the spherical grooves on the bottom surface of the upper support plate and the top surface of the lower support plate respectively to form a spherical rotating friction pair.

5. According to claim 1, the novel anti-pullout support for slope-adjusting and anti-falling beams is characterized by: Limiting flanges are arranged at the four corners of the bottom surface of the upper support plate or the four corners of the top surface of the lower support plate, and the positioning boss is placed between adjacent limiting flanges and has a gap with the limiting flanges.

6. The novel anti-pullout support for slope-adjusting and anti-falling beams according to claim 1 is characterized by: An upper anchor bolt assembly is disposed on the upper surface of the upper support plate and connected to the bridge beam body; a lower anchor bolt assembly is disposed on the lower surface of the lower support plate and connected to the bridge pier.

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