CN217678565U - A shock-absorbing abutment bearing for bridge and culvert engineering - Google Patents

Abstract

The utility model relates to the technical field of bridge and culvert engineering, and discloses a shock-absorbing abutment bearing for bridge and culvert engineering, which comprises a bridge main body and an abutment main body located below the bridge main body. The opposite sides of the bridge main body and the abutment main body are respectively fixed and welded with The upper base plate and the lower base plate, a hydraulic cylinder is fixedly installed at the center of the top of the lower base plate, a pressure rod inserted in the hydraulic cylinder is fixedly connected at the center of the bottom of the upper base plate, and the bottom end of the pressure rod is connected with a matching hydraulic cylinder. The first piston, and the hydraulic cylinder is provided with hydraulic oil, the inner cylinder wall of the hydraulic cylinder near the bottom end is provided with a plurality of L-shaped oil passages that are evenly distributed in a ring shape, and the L-shaped oil passage is provided with a matching second piston, the second A first spring is connected between the piston and the top end of the L-shaped oil passage, and a buffer assembly is installed between the second piston and the upper base plate. The utility model enables the abutment support to have good multi-level buffer performance, thereby greatly improving the shock absorption effect of the bridge.

Description

A kind of vibration-absorbing abutment support for bridge and culvert engineering

technical field

The utility model relates to the technical field of bridge and culvert engineering, in particular to a shock-absorbing abutment support for bridge and culvert engineering.

Background technique

The abutment support is an important structural component connecting the upper structure and the lower structure of the bridge. It can reliably transmit the load and deformation borne by the upper structure of the bridge to the lower structure of the bridge, and is an important force transmission device of the bridge.

In order to resist external vibrations, bridges usually need to be equipped with shock absorbing devices, but the existing abutment shock absorbing devices have a single shock absorption method and a short service life. good.

Utility model content

The purpose of this utility model is to solve the problems in the above-mentioned background technology, and propose a kind of shock-absorbing abutment support for bridge and culvert engineering.

In order to achieve the above object, the utility model adopts the following technical solutions:

A bridge and culvert engineering shock-absorbing abutment support, comprising a bridge main body and an abutment main body located below the bridge main body, the opposite sides of the bridge main body and the abutment main body are respectively fixed and welded with an upper base plate and a lower base plate, and the lower base plate A hydraulic cylinder is fixedly installed at the center of the top, and a pressure rod inserted in the hydraulic cylinder is fixedly connected to the center of the bottom of the upper base plate. The bottom end of the pressure rod is connected with a first piston matching the hydraulic cylinder. And the hydraulic cylinder is provided with hydraulic oil, and the inner cylinder wall near the bottom of the hydraulic cylinder is provided with a plurality of annular and evenly distributed L-shaped oil passages, and a matching second piston is arranged in the L-shaped oil passages. A first spring is connected between the second piston and the top end of the L-shaped oil passage, and a buffer assembly is installed between the second piston and the upper base plate.

Preferably, the buffer assembly includes slide rods connected to the tops of multiple second pistons, the top of the hydraulic cylinder is provided with an annular groove along the edge, and a matching compression ring is arranged in the annular groove. The bottom is fixedly connected to the top of the slide bar, and the top of the pressure ring is fixedly connected to a plurality of second springs uniformly distributed in a ring shape along the edge, and the other end of the second spring is fixedly connected to the bottom of the upper substrate.

Preferably, the top end of the hydraulic cylinder is fixedly installed with a ring-shaped damping ring along the edge.

Preferably, the four corners of the sides of the upper base plate and the lower base plate are fixedly installed with limit sleeves, and the opposite sides of the bridge main body and the abutment main body are respectively preset with screws corresponding to the limit sleeves. through the corresponding limit sleeve, and the screw thread is connected with a matching lock nut.

Preferably, the bottom of the upper base plate is fixedly installed with a protective cover coaxial with the hydraulic cylinder, and the protective cover is slidably arranged on the hydraulic cylinder.

Preferably, the inner wall of the bottom end of the protective sleeve is installed with a sealing ring that fits the outer wall of the hydraulic cylinder.

Compared with the prior art, the utility model provides a shock-absorbing abutment support for bridge and culvert engineering, which has the following beneficial effects:

1. The shock-absorbing abutment support of the bridge and culvert project is equipped with the bridge main body, hydraulic cylinder, pressure rod, first piston, L-shaped oil passage, second piston, first spring and buffer assembly, and the pressure rod cooperates with the first piston. It is convenient to press the hydraulic oil in the hydraulic cylinder into the L-shaped oil passage, which is convenient to drive the second piston to slide and compress the first spring. At the same time, it is convenient to further improve the shock absorption effect with the buffer assembly, which not only makes the hydraulic shock absorption and spring shock absorption cooperate , and it is convenient to carry out multi-level shock absorption on the bridge, thereby greatly improving the shock absorption effect of the bridge.

2. The shock-absorbing abutment support of the bridge and culvert project, by setting the bridge main body, abutment main body, upper base plate, lower base plate, limit sleeve, screw rod and lock nut, the lock nut cooperates with the screw rod to facilitate the positioning of the limit sleeve Locking, thereby effectively improving the stability of the positions of the upper base plate and the lower base plate.

The parts not involved in the device are the same as the prior art or can be realized by using the prior art. The utility model enables the abutment support to have good multi-stage buffering performance, thereby greatly improving the damping effect of the bridge.

Description of drawings

Fig. 1 is the structural representation of a kind of bridge and culvert engineering damping type abutment bearing proposed by the utility model;

Fig. 2 is a perspective view of the connection part between the pressure rod and the hydraulic cylinder of the utility model;

Fig. 3 is an enlarged view of part A in Fig. 1 .

In the figure: 1. Bridge main body; 2. Abutment main body; 3. Upper base plate; 4. Lower base plate; 5. Hydraulic cylinder; 6. Pressure rod; 7. First piston; 8. L-shaped oil passage; 9. Second Two pistons; 10, first spring; 11, slide rod; 12, pressure ring; 13, second spring; 14, damping ring; 15, limit sleeve; 16, screw rod; 17, protective cover.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

In describing the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , are constructed and operated in a specific orientation and therefore cannot be construed as limiting the invention.

Referring to Fig. 1 , a shock-absorbing abutment support for bridge and culvert engineering includes a bridge main body 1 and an abutment main body 2 located below the bridge main body 1, and the opposite sides of the bridge main body 1 and the abutment main body 2 are respectively fixedly welded with an upper base plate 3 and the lower base plate 4, the four corners of the upper base plate 3 and the lower base plate 4 sides are all fixedly installed with limit sleeves 15, and the opposite sides of the bridge main body 1 and the abutment main body 2 are respectively preset with screw rods 16 corresponding to the limit sleeves 15 , the screw rod 16 passes through the corresponding limit sleeve 15, and the screw rod 16 is threaded with a matching lock nut, which is convenient to improve the stability of the installation structure of the upper base plate 3 and the lower base plate 4.

Referring to Figure 1-2, a hydraulic cylinder 5 is fixedly installed at the center of the top of the lower base plate 4, and a ring-shaped damping ring 14 is fixedly installed on the top of the hydraulic cylinder 5 along the edge, so as to avoid the gap between the upper base plate 3 and the top of the hydraulic cylinder 5. In the event of collision damage, the center of the bottom of the upper base plate 3 is fixedly connected with a pressure rod 6 inserted in the hydraulic cylinder 5, and the bottom end of the pressure rod 6 is connected with a first piston 7 that matches the hydraulic cylinder 5, and the hydraulic cylinder 5 There is hydraulic oil inside, which is convenient for hydraulic shock absorption.

Referring to Fig. 1 and Fig. 3, the inner cylinder wall near the bottom of the hydraulic cylinder 5 is provided with a plurality of L-shaped oil passages 8 evenly distributed in the form of a ring, which is convenient for the hydraulic oil to be pressed along the L-shaped when the main body of the bridge 1 is vibrated by force. The oil passage 8 rises, and a matching second piston 9 is arranged in the L-shaped oil passage 8, so that the rising pressure oil pushes the second piston 9 to rise, and a first piston 9 is connected to the top of the L-shaped oil passage 8. Spring 10 for easy cushioning.

Referring to Figures 2-3, a buffer assembly is installed between the second piston 9 and the upper base plate 3, the buffer assembly includes a slide rod 11 connected to the top of a plurality of second pistons 9, the top of the hydraulic cylinder 5 is provided with an annular groove along the edge, A matching pressure ring 12 is arranged in the annular groove, so that the second piston 9 can drive the pressure ring 12 to rise. The ring-shaped second springs 13 are evenly distributed, and the other end of the second spring 13 is fixedly connected to the bottom of the upper base plate 3, which is convenient for further buffering and shock absorption.

Referring to Figures 1 and 3, the bottom of the upper base plate 3 is fixed with a protective sleeve 17 coaxially arranged with the hydraulic cylinder 5, the protective sleeve 17 is slidably sleeved on the hydraulic cylinder 5, and the inner wall of the bottom end of the protective sleeve 17 is installed with The sealing ring fitted with the outer wall of the hydraulic cylinder 5 ensures the tightness between the protective cover 17 and the hydraulic cylinder 5, and facilitates the protection of the second spring 13 and the shock absorbing ring 14, avoiding corrosion damage as much as possible.

Working principle: When the main body of the bridge 1 is subjected to force and vibration, the pressure rod 6 will drive the first piston 7 to slide along the hydraulic cylinder 5. At this time, the upper base plate 3 will compress the second spring 13 to achieve the initial shock absorption and buffering. At the same time, the first The piston 7 will press the hydraulic oil to make it rise along the L-shaped oil passage 8, thereby pushing the second piston 9 to slide and compress the first spring 10 to achieve buffering and shock absorption again. During the sliding process of the second piston 9, it will drive the connecting rod The pressure ring 12 of the sliding rod 11 rises along the annular groove, thereby compressing the second spring 13 again, realizing multi-stage buffering and shock absorption, and greatly improving the shock absorption performance of the bridge.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (6)

1. A bridge and culvert engineering shock-absorbing type abutment support, comprising a bridge main body and an abutment main body positioned below the bridge main body, is characterized in that, the opposite sides of the bridge main body and the abutment main body are respectively fixedly welded with an upper base plate and a lower Base plate, a hydraulic cylinder is fixedly installed at the center of the top of the lower base plate, a pressure rod inserted in the hydraulic cylinder is fixedly connected at the center of the bottom of the upper base plate, and the bottom end of the pressure rod is connected with a hydraulic cylinder. The matching first piston, and the hydraulic cylinder is provided with hydraulic oil, and the inner cylinder wall near the bottom of the hydraulic cylinder is provided with a plurality of circular and evenly distributed L-shaped oil passages, and the L-shaped oil passages are provided with matching For the second piston, a first spring is connected between the second piston and the top end of the L-shaped oil passage, and a buffer assembly is installed between the second piston and the upper base plate. 2. The vibration-absorbing abutment support for bridge and culvert engineering according to claim 1, wherein the buffer assembly includes slide rods connected to the tops of a plurality of second pistons, and the top ends of the hydraulic cylinders are edged An annular groove is opened, and a matching pressing ring is arranged in the annular groove. The bottom of the pressing ring is fixedly connected with the top end of the slide bar, and the top of the pressing ring is fixedly connected with a plurality of ring-shaped evenly distributed second rings along the edge. A spring, the other end of the second spring is fixedly connected to the bottom of the upper substrate. 3 . The shock-absorbing abutment support for bridge and culvert engineering according to claim 1 , wherein a ring-shaped shock-absorbing ring is fixedly installed along the edge of the top end of the hydraulic cylinder. 4 . 4. The vibration-absorbing abutment support for bridge and culvert engineering according to claim 1, characterized in that, the four corners of the upper base plate and the side of the lower base plate are all fixedly installed with limit sleeves, and the bridge main body and bridge The opposite sides of the table main body are respectively preset with screw rods corresponding to the spacer sleeves, the screw rods pass through the corresponding spacer sleeves, and the screw rods are threaded with matching lock nuts. 5. The vibration-absorbing abutment support for bridge and culvert engineering according to claim 1, wherein a protective cover coaxially arranged with the hydraulic cylinder is fixedly installed on the bottom of the upper base plate, and the sliding cover of the protective cover Set on the hydraulic cylinder. 6 . The vibration-absorbing abutment support for bridge and culvert engineering according to claim 5 , characterized in that, a seal ring fitted on the inner wall of the bottom end of the protective sleeve is attached to the outer wall of the hydraulic cylinder. 7 .

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