CN220724826U - Novel connecting device for prefabricated box girder - Google Patents

Abstract

The utility model discloses a novel connecting device for a prefabricated box girder, which belongs to the technical field of prefabricated box girder connecting equipment and comprises a pull rod, an end diaphragm plate, a lubricating assembly and a reinforcing assembly, wherein the pull rod penetrates through the end diaphragm plate, the lubricating assembly is arranged at the contact part of the pull rod and the end diaphragm plate, the lubricating assembly is connected with the pull rod, the reinforcing assemblies are arranged at the two ends of the pull rod penetrating through the end diaphragm plate, and the reinforcing assembly is connected with the side surface of the end diaphragm plate and the lubricating assembly.

Description

Novel connecting device for prefabricated box girder

Technical Field

The utility model relates to the technical field of precast box girder connecting equipment, and particularly discloses a novel connecting device for precast box girders.

Background

The earthquake is a geological disaster with very terrible destructive power, the destructive power of the earthquake to the bridge is huge, after the earthquake occurs, the earthquake can cause great influence on the safety, stability and other aspects of the bridge, the foundation, the bridge pier and the bridge support are damaged, the bridge is an important building facility in social life, once the bridge is damaged, the normal life of people can be seriously influenced, and meanwhile, serious economic loss can be caused. When an earthquake occurs, although the destructive force of the earthquake can be blocked and eliminated by the support, the protection force of the support is limited, and the problem of beam falling occurs once the support is destroyed.

The Chinese patent publication No. CN111395153B discloses a vertical buffering vibration-resistant beam connecting device, which has the following technical scheme: the steel box girder is connected with the lower beam of the bridge tower through the connecting beam device, a plurality of connecting holes are formed in the lower surface of the steel box girder, horn sleeves in the connecting beam device are symmetrically arranged in sleeve holes and connecting holes, the horn mouths of the horn sleeves are opposite to each other, two ends of a steel wire rope respectively penetrate through the horn mouths and are out, the bottom end of the steel wire rope is anchored with the reduced diameter end of the horn sleeve at the lower part of the steel wire rope, the top end of the steel wire rope is anchored with the fixed flange of the reduced diameter end of the horn sleeve at the upper part of the steel wire rope, and the reduced diameter end of the horn sleeve in the sleeve hole is anchored with an upper wing plate. The simple beam Liang Duanlai is connected through the pull rod in the application to limit the beam slab shaking amplitude, the buffer spring is used between the rubber cushion block and the end diaphragm plate of the pull rod to eliminate the force which leads to the beam slab shaking, and the silicone grease is used at the position where the pull rod passes through the end diaphragm plate to reduce friction loss.

However, the novel girder connecting device for the prefabricated box girder is only simply assembled when the production and the installation are completed, and lacks necessary connecting anti-seismic components, so that shaking caused by the traffic or the earthquake of an automobile cannot be effectively reduced, and the safety and the stability of a bridge are greatly influenced, and therefore, the novel girder connecting device for the prefabricated box girder is invented aiming at the defect.

Disclosure of Invention

Aiming at the technical problems, the technical scheme of the utility model is as follows: the utility model provides a novel connecting device of prefabricated case roof beam, includes two pull rods and two end diaphragms, and two pull rods run through two end diaphragms respectively, and a novel connecting device of prefabricated case roof beam still includes rubber circle, lubricated subassembly and reinforcement subassembly, and a rubber circle is installed respectively to the relative side of two end diaphragms and the part that the pull rod links to each other, and a set of fixed subassembly is installed respectively with the part that the pull rod links to each other to the side that two end diaphragms are on the back mutually, installs a set of lubricated subassembly between every fixed subassembly and the rubber circle respectively.

Further, two through holes are respectively formed in the side face of each end diaphragm, the four through holes are coaxial in pairs, each pull rod is respectively and slidably installed in the through hole of each end diaphragm, and each lubrication assembly is respectively installed in one through hole.

Further, threads are respectively arranged at two ends of each pull rod extending out of the through hole, and a fixing component is respectively arranged at the threads of each pull rod.

Further, the lubrication assembly comprises grease filling layers, each through hole is filled with the grease filling layers, each through hole is internally provided with a sealing screw, each sealing screw is fixedly arranged on the side surface of the rubber ring, which is in contact with the end diaphragm plate, and the grease filling layers in the through holes are sealed through the sealing screws and the fixing assembly.

Further, the fixed subassembly includes the reinforcement buckle, consolidates the buckle and installs the side towards the pull rod at end diaphragm, and the diameter through reinforcement buckle and seal screw is greater than the diameter of end diaphragm through hole, seals the through hole of end diaphragm through reinforcement buckle, rubber circle and seal screw.

Further, the fixed subassembly still includes the spring lag, and the spring lag is provided with four, and the spring lag is made for flexible material, and every spring lag equal slidable mounting is provided with threaded one end at the pull rod, installs the spring on the spring lag inner wall, and spring one end fixed mounting is on the reinforcement buckle, and spring other end fixed mounting is on the spring lag inner wall, all fat liquors on every spring.

Further, one side of each spring protecting sleeve far away from the end diaphragm plate is fixedly provided with a thick circular plate rubber cushion block, the side surface of the thick circular plate rubber cushion block is provided with a matched nut, and the matched nut and the threaded part of the pull rod form spiral fit.

Compared with the prior art, the utility model has the beneficial effects that: (1) According to the utility model, the local stress generated by the bridge during shaking is counteracted by arranging the springs, so that the bridge is kept stable in the shaking process; (2) According to the utility model, the silicone grease is used on the spring, so that friction and collision among spring joints of the spring are reduced, and abrasion of the spring is further reduced, and on the other hand, the buffer spring can be isolated from contacting with air, and the service life are prolonged, so that the processing cost is saved; (3) According to the utility model, the grease filling layer and the rubber ring are used between the pull rod and the end diaphragm to protect, so that the occurrence of oxidization of the outer surface of the pull rod is avoided, and the friction loss (4) between the pull rod and the end diaphragm is avoided.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic view of a partial enlarged structure at a in fig. 1.

Fig. 3 is a schematic view of a partial enlarged structure at B in fig. 1.

Reference numerals: 1-a pull rod; 2-a steel backing plate matched with the screw cap; 3-reinforcing the buckle; 4-end diaphragm plates; 5-a rubber ring; 6-sealing the spiral; 7-a grease filling layer; 8-a thick circular plate rubber cushion block; 9-a matched nut; 10-spring protective sleeve.

Detailed Description

The technical scheme of the utility model is further described in the following by combining with the specific embodiments.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

As shown in fig. 1 and fig. 2, two end diaphragms 4 are provided, two through holes are formed in each end diaphragm 4, the through holes in the end diaphragms 4 are coaxial, two pull rods 1 are provided, each pull rod 1 is installed in each through hole of each end diaphragm 4, each through hole is filled with a grease filling layer 7, a sealing screw 6 is further installed in each through hole, each sealing screw 6 is fixedly installed on the side surface of the rubber ring 5, which is contacted with the end diaphragms 4, a reinforcing buckle 3 is installed on the side surface of the end diaphragms 4, which faces the pull rods 1, the diameter of each reinforcing buckle 3 and the diameter of each sealing screw 6 are larger than that of each through hole of the end diaphragms 4, and the through holes of the end diaphragms 4 are sealed by the reinforcing buckle 3, the rubber ring 5 and the sealing screw 6.

As shown in fig. 1, fig. 2 and fig. 3, the two ends of each pull rod 1 extending out of the through hole are respectively provided with threads; the one end that every pull rod 1 was provided with the screw thread all installs a spring lag 10, spring lag 10 is flexible material and makes, install the spring on the spring lag 10 inner wall, spring one end fixed mounting is on consolidate buckle 3, spring other end fixed mounting is on spring lag 10 inner wall, all oil-coated silicone grease on every spring, the one side fixed mounting that every spring lag 10 kept away from end diaphragm plate 4 has thick plectane rubber cushion 8, supporting nut 9 is installed to thick plectane rubber cushion 8 side, supporting nut 9 constitutes helical fit with pull rod 1 screw thread part.

The utility model discloses a novel connecting device for a prefabricated box girder, which has the following working principle.

The method comprises the steps of installing a spring protecting sleeve 10 and a reinforcing buckle 3 at a thread position at one end of a pull rod 1, then installing a rubber ring 5 and a sealing screw 6 in a through hole, penetrating the pull rod 1 into the through hole, then injecting a grease filling layer 7 into the through hole, installing the reinforcing buckle 3 and the spring protecting sleeve 10 at the other end of the pull rod 1, installing a nut matched steel base plate 2 and a thick circular plate rubber cushion block 8 on the pull rod 1, and fixing the thick circular plate rubber cushion block 8 by rotating a matched nut 9.

Secondly, when the bridge shakes, the slow springs are stressed and compressed, so that the shaking force of the bridge is counteracted, the bridge is kept stable, friction between spring joints is reduced through silicone grease, and the springs can be isolated from being contacted with air, so that the service life is prolonged; the pull rod 1 and the end diaphragm plate 4 are protected by using the grease filling layer and the rubber ring, so that the pull rod can be effectively prevented from being oxidized, and friction loss between the pull rod and the end diaphragm plate is avoided.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The scope of the utility model is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (7)

1. The utility model provides a novel connecting device of prefabricated case roof beam, includes two pull rods (1) and two end diaphragm plates (4), and two end diaphragm plates (4) are run through respectively to two pull rods (1), its characterized in that: the utility model provides a novel connecting device of prefabricated roof beam still includes rubber circle (5), lubricated subassembly and reinforcement subassembly, and a rubber circle (5) are installed respectively to the part that the side that two end diaphragm plates (4) are relative links to each other with pull rod (1), and a set of fixed subassembly is installed respectively to the side that two end diaphragm plates (4) are opposite to each other and the part that pull rod (1) links to each other, installs a set of lubricated subassembly between every fixed subassembly and the rubber circle (5) respectively.

2. The novel connection device for prefabricated box girders according to claim 1, wherein: two through holes are respectively formed in the side face of each end diaphragm plate (4), the four through holes are coaxial in pairs, each pull rod (1) is respectively and slidably arranged in each through hole of each end diaphragm plate (4), and each lubrication assembly is respectively arranged in one through hole.

3. A novel connection device for prefabricated box girders according to claim 2, characterized in that: threads are respectively arranged at two ends of each pull rod (1) extending out of the through hole, and a fixing component is respectively arranged at the thread positions of the pull rods (1).

4. A novel connection device for prefabricated box girders according to claim 2, characterized in that: the lubrication assembly comprises grease filling layers (7), each through hole is filled with the grease filling layers (7), each through hole is internally provided with a sealing screw (6), each sealing screw (6) is fixedly arranged on the side surface of the rubber ring (5) contacted with the end diaphragm plate (4), and the grease filling layers (7) in the through holes are sealed through the sealing screws (6) and the fixing assembly.

5. The novel connecting device for prefabricated box girders according to claim 4, wherein: the fixing assembly comprises a reinforcing buckle (3), the reinforcing buckle (3) is arranged on the side face of the end diaphragm plate (4) facing the pull rod (1), the diameter of the through hole of the end diaphragm plate (4) is larger than that of the through hole of the end diaphragm plate (6) through the reinforcing buckle (3), the rubber ring (5) and the sealing screw (6), and the through hole of the end diaphragm plate (4) is sealed.

6. The novel connecting device for prefabricated box girders according to claim 5, wherein: the fixing assembly further comprises four spring protection sleeves (10), the four spring protection sleeves (10) are made of flexible materials, each spring protection sleeve (10) is slidably mounted at one end of the pull rod (1) provided with threads, a spring is mounted on the inner wall of each spring protection sleeve (10), one end of each spring is fixedly mounted on the reinforcing buckle (3), the other end of each spring is fixedly mounted on the inner wall of each spring protection sleeve (10), and grease is coated on each spring.

7. The novel connecting device for the prefabricated box girder according to any one of claims 1 to 6, wherein: one side of each spring protecting sleeve (10) far away from the end diaphragm plate (4) is fixedly provided with a thick circular plate rubber cushion block (8), the side surface of the thick circular plate rubber cushion block (8) is provided with a matched nut (9), and the matched nut (9) and the threaded part of the pull rod (1) form spiral fit.