CN207793889U - Gantry crane system matched with movable formwork for use - Google Patents

Abstract

The utility model discloses a gantry crane system used with a mobile formwork. The gantry crane system includes a bridge, two legs fixed on both sides of the bridge, a walking mechanism installed at the lower ends of the legs, a first guide rail and a second guide rail; the walking mechanism includes a driving device, an inner walking part and an outer walking part installed at the lower ends of the legs; the driving device is used to drive the inner walking part to walk along the first guide rail, and is used to drive the outer walking part to walk along the second guide rail. The utility model can conveniently transport steel cages, greatly shorten the construction period, and improve construction efficiency.

Description

A gantry crane system used with mobile formwork

technical field

The utility model relates to a gantry crane system used with a mobile formwork, which belongs to the technical field of bridge construction equipment.

Background technique

In the construction of traditional mobile formwork, due to the limitation of hoisting equipment, it is necessary to manually transport the steel bars to the formwork for on-site binding. The period of binding steel bars is 3-5 days. The next process cannot be carried out in this process, causing some workers to be idle and affecting the construction period of the bridge. . Moreover, binding steel bars in the formwork has low construction efficiency and high labor intensity.

Utility model content

The utility model aims to provide a gantry crane system used with a mobile formwork. The outriggers of the gantry crane system can walk along the main beam or along the mobile formwork. It is convenient to transfer the steel cage, which can greatly shorten the construction period. Improve construction efficiency.

In order to achieve the above object, the technical solution adopted in the utility model is:

A gantry crane system used with a mobile formwork, including a bridge frame and two outriggers fixed on both sides of the bridge frame; its structural feature is that it also includes a traveling mechanism installed at the lower end of the outriggers, a first guide rail and a second guide rail;

The running mechanism includes a driving device, an inner running part installed at the lower end of the outrigger and an outer running part; the inner running part is installed inside the lower end of the outrigger, and the outer running part is installed outside the lower end of the outrigger, And the inner walking part is located on the inner side of the outer walking part;

The driving device is used to drive the inner running part to walk along the first guide rail, and to drive the outer running part to walk along the second guide rail; the first guide rail is used to be arranged on both sides of the concrete main beam end, the second guide rail is used to be arranged on both sides of the outer formwork of the mobile formwork, and the first guide rail is located on the inner side of the second guide rail.

Therefore, the utility model creatively sets the inner walking part and the outer walking part under a single leg at the same time, which can realize the purpose of the outrigger (gantry) walking on the main beam and/or on the outer formwork, thus making it convenient It is possible to transfer the reinforcement cage, shorten the construction period and improve the construction efficiency.

The inner side described in the utility model is relative to the center line of the main beam, the side close to the center line of the main beam is the inner side, and the side far away from the center line of the main beam is the outer side.

According to the embodiments of the present invention, the present invention can also be further optimized, and the following is the technical scheme formed after optimization:

Preferably, the driving device includes a motor installed at the bottom of the leg, the output end of the motor is connected to a reducer, and the reducer is connected to the inner running part and the outer running part installed on the transmission shaft through a transmission mechanism. Further, the transmission mechanism includes a first gear connected to the output end of the reducer, and a second gear mounted on the transmission shaft; the first gear is engaged with the second gear for transmission.

In order to reduce the frictional resistance of walking, the inner running part is a first roller, and the first roller runs on the first guide rail; the outer running part is a second roller, and the second roller runs on the first guide rail. on the second rail. In order to facilitate the running of the rollers, first guide rails as the first roller running tracks are installed on both sides of the main beam, and second guide rails as the second roller running tracks are installed on both sides of the outer formwork. The gauge between the first guide rails is smaller than the gauge between the second guide rails.

In order to adjust the position of the second guide rail, an adjustment block is installed between the second guide rail and the outer template. Furthermore, in order to avoid the interference effect of the second guide rail when the transverse prestress is stretched, the outer end of the adjustment block and the bottom outer part of the second guide rail are hingedly connected by a pin, and the second guide rail can rotate around the The adjustment block is turned outward. In this way, when tensioning is required, the second guide rail can be turned around the adjustment block to the outside, providing an operating space for transverse prestressing tensioning, and improving the convenience of use.

For the convenience of hoisting, a hoisting trolley is slidably installed on the bridge frame, and a winch is installed on the hoisting trolley.

The method for bridge construction using the above-mentioned gantry crane system used with the mobile formwork includes the following steps:

1) Pre-binding reinforcement cages during bridge construction;

2) After the outer formwork is closed, the driving device drives the inner walking part and the outer walking part to move the outrigger on the main beam and the outer formwork, and the pre-bound steel bars are pulled by the winch installed on the bridge frame. The cage is hoisted in sections into the outer formwork;

3) Concrete pouring can be carried out after the inner formwork is installed, and the binding work of the next span reinforcement cage is carried out at the same time as the concrete pouring and curing.

It is worth mentioning that the main girder of the utility model refers to the main girder of the construction bridge. When using the gantry crane, the main girder is a completed bridge, and the outer formwork does not support the main girder, but only serves as the next step. Support for wet concrete when pouring across bridges.

Compared with the prior art, the utility model has the beneficial effects that: during bridge construction, the reinforcement cage can be bound in advance; Concrete pouring can be carried out after the formwork is completed, while the concrete pouring and maintenance can be carried out at the same time as the tying of the next span of reinforcement cages, so as to avoid idle workers and make each process compact and orderly. -15 days/span is shortened to 7-10 days/span, which significantly shortens the total construction period of the bridge and brings considerable economic benefits to the project.

In addition, the gantry crane system of the present invention can also be used as a transfer tool for equipment, materials and other building materials between poured bridges and mobile formwork.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the utility model;

Fig. 2 is the partially enlarged structure schematic diagram of running mechanism in Fig. 1;

Fig. 3 is a structural schematic diagram of the utility model in a state of transverse prestress tension.

In the picture

1. Legs; 2. Bridge; 3. Lifting trolley; 4. Hoist; 5. Traveling mechanism; 6. Main beam; 7. Outer formwork; 8. The first roller; 9. The second roller; 10. 11. Second guide rail; 12. Adjustment block; 13. Pin shaft; 14. Motor; 15. Reducer; 16. First gear; 17. Second gear; 18. Transmission shaft.

Detailed ways

The utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. For the convenience of description, if the words "up", "down", "left" and "right" appear in the following, it only means that the directions of up, down, left and right are consistent with the drawings themselves, and do not limit the structure.

A four-track gantry crane system used with a mobile formwork, as shown in Figures 1 and 2, includes a bridge frame 2, legs 1 fixed at both ends of the bridge frame 2, and a first roller 8 rotatably mounted on the inner side of the lower end of the leg 1 , the second roller 9 that is installed on the outer side of the lower end of the supporting leg 1, the two first guide rails 10 fixed on the two sides of the main beam 6 and the two second guide rails 11 fixed on the two sides of the outer formwork 7, the first roller 8 is located above the first guide rail 10, the second roller 9 is located above the second guide rail 11, and the traveling mechanism 5 is installed on the outrigger 1, which drives the first roller 8 and the second roller 9 to rotate. The trolley 3 is slidably installed under the bridge frame 2, and the winch 4 is installed on the hoisting trolley 3. Because the spacing between the two first guide rails 10 on the concrete girder 6 and the two second guide rails 11 on the outer formwork 7 of the mobile formwork is different, four rows of rollers (i.e. the first rollers) are arranged at the bottom of the supporting leg 1 8 and the second roller 9), each leg 1 is provided with two rollers in the longitudinal direction, which can realize the rail-changing movement of the gantry crane on the concrete main beam 6 and the outer formwork 7 of the mobile formwork, and the gantry crane can be moved from The concrete main beam 6 moves smoothly onto the outer formwork 7 , and can also move smoothly from the outer formwork 7 to the concrete main beam 6 .

Utilize the above-mentioned gantry crane system to carry out the construction method as follows: during bridge construction, the reinforcement cage can be bound in advance; Concrete can be poured after the inner formwork is installed, while concrete pouring and maintenance can be carried out at the same time as the tying of the reinforcement cage for the next span, which avoids idle workers, makes each process compact and orderly, significantly shortens the construction period of the bridge, and brings new benefits to the project. to considerable economic benefits.

As shown in Figure 2, the walking mechanism 5 can have the following structure, which includes a speed reducer 15 installed on the support leg 1, a motor 14 connected to the input shaft of the speed reducer 15, and a first motor 14 installed on the output shaft of the speed reducer 15. A gear 16, a second gear 17 connected to the second roller 9, and a transmission shaft 18 whose two ends are respectively connected to the first roller 8 and the second roller 9, the first gear 16 meshes with the second gear 17. The motor 14 rotates and drives the first gear 16 to rotate through the reducer 15 to control the torque, so that the second gear 17 meshed with it drives the second roller 9 to rotate and walk along the second guide rail 11 . And the transmission shaft 18 drives the first roller 8 to rotate along the first guide rail 10, realizing the walking of the gantry crane.

As shown in FIG. 3 , the second guide rail 11 is rotatably mounted on the adjustment block 12 through a pin shaft 13 , and the adjustment block 12 is installed on both sides of the outer template 7 through bolts. When carrying out transverse prestressing tension, the second guide rail 11 can be rotated outwards through the pin shaft 13 to make room for tensioning, thus further improving the convenience of use.

The above-mentioned embodiments should be understood that these embodiments are only used to illustrate the utility model more clearly, and are not intended to limit the scope of the utility model. After reading the utility model, those skilled in the art will understand each aspect of the utility model Modifications in various equivalent forms all fall within the scope defined by the appended claims of this application.

Claims (8)

1. A gantry crane system used with a mobile formwork, comprising a bridge frame (2) and two outriggers (1) fixed on both sides of the bridge frame (2); it is characterized in that it also includes a bridge mounted on the lower end of the outrigger (1) The traveling mechanism (5), the first guide rail (10) and the second guide rail (11); The running mechanism (5) includes a driving device, an inner running part installed at the lower end of the outrigger (1) and an outer running part; the inner running part is installed inside the lower end of the outrigger (1), and the outer running part Installed on the outer side of the lower end of the outrigger (1), and the inner running part is located on the inner side of the outer running part; The driving device is used for driving the inner running part to walk along the first guide rail (10), and for driving the outer running part to walk along the second guide rail (11); the first guide rail (10) is used for The second guide rail (11) is arranged on both sides of the concrete main beam (6), and the second guide rail (11) is used to be arranged on both sides of the outer formwork (7) of the mobile formwork, and the first guide rail (10) is located at the second The inner side of the second guide rail (11). 2. The gantry crane system used with the mobile formwork according to claim 1, characterized in that the drive device includes a motor (14) installed at the bottom of the leg (1), and the output end of the motor (14) is connected to the The speed reducer (15) links to each other, and the speed reducer (15) is connected with the inside running part and the outside running part that are contained on the transmission shaft (18) through a transmission mechanism. 3. The gantry crane system used with the mobile formwork according to claim 2, characterized in that the transmission mechanism includes a first gear (16) connected to the output end of the reducer (15), mounted on the transmission shaft ( 18) on the second gear (17); the first gear (16) is engaged with the second gear (17) for transmission. 4. The gantry crane system used with the mobile formwork according to claim 1, characterized in that, the inner running part is a first roller (8), and the first roller (8) travels on the first guide rail ( 10); the outer running part is the second roller (9), and the second roller (9) runs on the second guide rail (11). 5. The gantry crane system used with the mobile formwork according to claim 4, characterized in that the gauge between the first guide rails (10) is smaller than the gauge between the second guide rails (11). 6. The gantry crane system used with the mobile formwork according to any one of claims 1-5, characterized in that an adjustment block (12) is installed between the second guide rail (11) and the outer formwork (7) ). 7. The gantry crane system used with the mobile formwork according to claim 6, characterized in that, a pin shaft ( 13) are hingedly connected, and the second guide rail (11) can rotate outward around the adjustment block (12). 8. The gantry crane system used with mobile formwork according to any one of claims 1-5, characterized in that a lifting trolley (3) is slidably installed on the bridge frame (2), and the lifting trolley ( 3) A winch (4) is installed on it.