CN221878800U - U-shaped groove top overhanging concrete structure walking type formwork device - Google Patents

Abstract

The utility model relates to the technical field of building construction, and in particular to a walking formwork device for a cantilevered concrete structure on the top of a U-shaped groove. Tracks are arranged on the ground at both sides of the U-shaped groove, and a walking formwork that can walk on the tracks is arranged on the tracks. The lengths of multiple rods in the walking formwork are adjustable, and simple physical and mechanical knowledge is applied to support and lift the cantilevered structure concrete on the top of the U-shaped groove. After the concrete is poured, demoulding is achieved by adjusting the length of the rods, and then the whole device is moved to the next working position by using a walking device, thereby speeding up the construction progress while ensuring construction safety, avoiding operations in a foundation pit, achieving high turnover of the frame, saving manpower and material resources, and having the characteristics of simple structure, easy operation, convenient disassembly and assembly, and low production cost.

Description

A walking formwork device for cantilevered concrete structure on top of a U-shaped groove

Technical Field

The utility model relates to the technical field of building construction, in particular to a walking formwork device of a U-shaped groove top cantilevered concrete structure.

Background Art

With the development of cities and the improvement of urban infrastructure, the gradual reduction of urban construction land, and the high cost of urban planning, more and more U-shaped trough + top cantilever structures are used for the restoration, diversion and transformation of urban water systems in eastern and southeastern my country. On the basis of meeting the river flow area, the surface area occupied by the river is reduced, thereby realizing the rational development and utilization of land and the integration of urban landscape. At the same time, due to the increasingly serious phenomenon of labor shortage in my country's construction market, on the one hand, the construction cost has increased year by year with the increase of labor costs, and on the other hand, the labor shortage has seriously restricted the construction progress and the development of the construction market; the existing U-shaped trough top cantilever concrete structure formwork system is generally operated in the foundation pit, with the formwork system support height, frame height-to-width ratio exceeding the specification requirements, complex construction process, slow installation and disassembly speed, large labor demand, and high risk factor; therefore, how to study a new formwork device that can reduce the investment of construction manpower and material resources has become a new trend and new driving force for urban water system governance and transformation.

Utility Model Content

In view of the above-mentioned problems, the utility model provides a walking formwork device for a U-shaped groove top cantilevered concrete structure, which overcomes the problems of slow installation and disassembly speed, large labor demand and high risk factor of conventional frames.

A walking formwork device for a U-shaped groove top cantilevered concrete structure, comprising: a track and a walking formwork slidably arranged on the track;

The two tracks are respectively arranged on the ground at both sides of the U-shaped groove;

The walking formwork comprises an inverted U-shaped bracket, a cantilevered main beam, a formwork, a bracing crossbar, an end hanger and a middle hanger;

The inverted U-shaped bracket includes a top cross bar and support vertical bars located below the two ends of the top cross bar, and a walking pulley is fixedly arranged under each of the support vertical bars, and at least two inverted U-shaped brackets connected together are arranged on the front and rear of the track, and the inverted U-shaped bracket slides along the track through the walking pulleys;

Two cantilever main beams are fixedly connected to the bottom of each top cross bar through two end hangers, and the templates are laid on the cantilever main beams arranged in front and behind; a supporting cross bar is connected between the lower parts of the two end hangers, a middle hanger is connected between the middle part of the supporting cross bar and the middle part of the top cross bar, and the middle hanger is located between the two end hangers;

Among them, the lengths of the top cross bar, the end hanger, the middle hanger and the bracing cross bar are all adjustable, and the top cross bar and the end hanger and the middle hanger are all connected by corner sleeves, the bracing cross bar and the end hanger and the middle hanger are all connected by corner sleeves, and fixed ends are provided at both ends of each corner sleeve.

In some of the embodiments, the top crossbar, the end suspension rods, the middle suspension rods and the bracing crossbars all include a plurality of rods, and adjacent rods are connected by adjustable joints;

An adjustable joint is arranged on the top cross bar between the end hanger and the middle hanger, and an adjustable joint is arranged on the supporting cross bar between the end hanger and the middle hanger.

In some of the embodiments, the cantilever main beam is welded and fixed to the end hanger.

In some of the embodiments, the track is a channel steel track.

In some of the embodiments, side tie rods are connected between the front and rear corresponding end suspension rods and the front and rear corresponding middle suspension belts.

In some of the embodiments, a tension cross bar is connected between the middle parts of the two supporting uprights of any inverted U-shaped bracket, and the length of the tension cross bar is adjustable.

In some of the embodiments, the fixed end includes two end plates, the lower ends of the two end plates are connected by hinges to form an openable and closable structure, and the upper ends of the two end plates are detachably connected together by fastening bolts.

In some of the embodiments, a rubber pad is provided between the fixed end and the rod.

The above utility model has the following advantages or beneficial effects:

The utility model discloses a walking formwork device for a cantilevered concrete structure on the top of a U-shaped groove. Tracks are arranged on the ground at both sides of the U-shaped groove, and a walking formwork that can walk on the tracks is arranged on the tracks. The lengths of multiple rods in the walking formwork are adjustable, and simple physical and mechanical knowledge is applied to support and lift the cantilevered structure concrete on the top of the U-shaped groove. After the concrete is poured, demoulding is achieved by adjusting the length of the rods, and then the whole device is moved to the next working position by using the walking device, thereby speeding up the construction progress while ensuring construction safety, avoiding operations in the foundation pit, achieving high turnover of the frame, saving manpower and material resources, and having the characteristics of simple structure, easy operation, convenient disassembly and assembly, low production cost, etc.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.

FIG1 is a front cross-sectional view of an application of a walking formwork device for a cantilevered concrete structure on the top of a U-shaped groove according to an embodiment of the present invention;

FIG2 is a side cross-sectional view of the application of the walking formwork device of the cantilevered concrete structure of the U-shaped groove top in the embodiment of the utility model;

3 is a schematic diagram of the connection node between the middle suspension rod and the bracing cross rod in the embodiment of the utility model;

FIG4 is a schematic diagram of the structure of a fixed end head in an embodiment of the utility model;

Among them, 1 is the track; 2 is the walking pulley; 3 is the supporting vertical pole; 4 is the cantilever main beam; 5 is the formwork; 6 is the bracing cross bar; 7 is the adjustable joint; 8 is the corner sleeve; 9 is the fixed end; 91 is the end plate; 92 is the hinge; 93 is the fastening bolt; 94 is the rubber gasket; 10 is the tension cross bar; 11 is the top cross bar; 12 is the end hanger; 13 is the middle hanger; 14 is the cantilever concrete structure, and 15 is the side tie rod.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

As shown in Figures 1 to 4, the utility model discloses a walking formwork device with a cantilevered concrete structure on the top of a U-shaped groove. The U-shaped groove can be a river channel, etc. The walking formwork device is used to form a cantilevered structure on the top of both sides of the river channel to reduce the surface area occupied by the river on the basis of satisfying the water flow area of the river; specifically, the walking formwork device includes: a track 1 and a walking formwork slidably arranged on the track 1; two tracks 1 are respectively arranged on the ground on both sides of the U-shaped groove; the walking formwork includes an inverted U-shaped bracket, a cantilevered main beam 4, Formwork 5, supporting cross bars 6, end hangers 12 and middle hangers 13; the inverted U-shaped bracket includes a top cross bar 11 and supporting vertical bars 3 fixedly connected to the bottom of the two ends of the top cross bar 11, and a walking pulley 2 is fixedly arranged under each supporting vertical bar 3, and at least two inverted U-shaped brackets connected together are arranged on the front and back of the track 1 (two adjacent inverted U-shaped brackets are connected by a connecting cross bar), and the inverted U-shaped bracket slides along the track 1 through the walking pulley 2, so that the entire walking formwork slides along the track 1 to realize its walking function. Two cantilever main beams 4 are fixedly connected to the bottom of each top cross bar 11 through two end hangers 12, and formwork 5 is laid on the cantilever main beams 4 arranged in front and behind for pouring to form a cantilever concrete structure 14 (the formwork 5 can be placed on the cantilever main beam 4 to pour concrete); a supporting cross bar 6 is connected between the lower parts of the two end hangers 12, and a middle hanger 13 is connected between the middle part of the supporting cross bar 6 and the middle part of the top cross bar 11, and the middle hanger 13 is located between the two end hangers 12. Among them, the lengths of the top cross bar 11, the end hangers 12, the middle hangers 13 and the bracing cross bar 6 are all adjustable, so that after the concrete pouring is completed, demoulding can be achieved by adjusting the length of the rods; and the top cross bar 11 and the end hangers 12 and the middle hangers 13 are all connected by corner sleeves 8, and the bracing cross bar 6 and the end hangers 12 and the middle hangers 13 are all connected by corner sleeves 8, and the corner sleeves 8 are welded into one piece, are hollow, are inserted into the rods and can slide along the rods (it should be noted here that welding is used when each rod is perpendicular to the corner sleeves 8), and each corner sleeve Fixed ends 9 are provided at both ends of the tube 8 so that the corner sleeve 8 cannot slide relative to the rod, that is, the fixed ends 9 are fixed on both sides of the corner sleeve 8 to fix the corner sleeve 8 and prevent the corner sleeve 8 from sliding after positioning; it should be noted here that the corner sleeve 8 should enable each rod to pass through the corner sleeve 8 smoothly and the gap after passing is small, and the fixed end 9 should be able to firmly fix the relative position of the corner sleeve 8 and the rod to ensure that it does not slide. Specifically, the fixed end 9 is fixed to form a brace to prevent the end hanger 12 and the middle hanger 13 from being deformed by the pressure of the cantilever concrete structure 14.

Specifically, the top cross bar 11, the end hanger 12, the middle hanger 13 and the bracing cross bar 6 all include a plurality of rods, and the adjacent rods are connected by adjustable joints 7; the top cross bar 11 between the end hanger 12 and the middle hanger 13 is provided with an adjustable joint 7, and the bracing cross bar 6 between the end hanger 12 and the middle hanger 13 is provided with an adjustable joint 7, so that the lengths of the top cross bar 11 and the bracing cross bar 6 can be adjusted synchronously; wherein, the adjustable joint 7 should be provided with a limit position verification device to ensure that the joint has reliable tensile and compressive resistance after its installation. The fixed end 9 includes two end plates 91, the lower ends of the two end plates 91 are connected to form an openable and closable structure by hinges 92, and the upper ends of the two end plates 91 are detachably connected together by fastening bolts 93. wherein, a rubber pad 94 is provided between the fixed end 9 and the rod to achieve a better fastening effect.

In the embodiment of the utility model, the cantilever main beam 4 is welded and fixed on the end suspension rod 12; the support vertical rod 3 and the top cross bar 11 are also welded and fixedly connected, and the welding between the cantilever main beam 4 and the end suspension rod 12 and the welding between the support vertical rod 3 and the top cross bar 11 must be firm and reliable. If necessary, this node can be reinforced separately to prevent it from being plastically deformed by force. The track 1 is a channel steel track; the end suspension rods 12 and the middle suspension belts corresponding to the front and rear are connected with side tie rods 15 to connect the front and rear suspension rods into a whole so that the overall walking formwork structure is more stable.

In an embodiment of the utility model, a tension cross bar 10 is connected between the middle parts of the two supporting uprights 3 of any of the above-mentioned inverted U-shaped brackets, and the tension cross bar 10 is connected to the supporting uprights 3 at both ends through angle sleeves 8, and fixed ends 9 are provided at both ends of the angle sleeves 8 to form tension to prevent the supporting uprights 3 from being deformed by force, and the length of the tension cross bar 10 is adjustable to make the structure of the inverted U-shaped bracket more stable, thereby making the overall walking formwork structure more stable.

In addition, in the present invention, each rod in the walking formwork device should be made of light and high-strength materials, especially its bending strength, which should be able to meet the bending deflection requirements of the rods of the device. And because the rods supporting the vertical rods 3 and the top crossbar 11 are the main force-bearing rods, their diameter or wall thickness can be increased to increase their effective force-bearing area. In addition, in order to ensure the connection and optimal force-bearing shape of each rod, each rod should be made of round steel pipes.

Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essence of the present invention, and will not be described in detail here.

The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims (8)

1. A walking formwork device for a U-shaped trough top cantilevered concrete structure, characterized in that it comprises: a track and a walking formwork slidably arranged on the track; The two tracks are respectively arranged on the ground at both sides of the U-shaped groove; The walking formwork comprises an inverted U-shaped bracket, a cantilevered main beam, a formwork, a bracing crossbar, an end hanger and a middle hanger; The inverted U-shaped bracket includes a top cross bar and support vertical bars located below the two ends of the top cross bar, and a walking pulley is fixedly arranged under each of the support vertical bars, and at least two inverted U-shaped brackets connected together are arranged on the front and rear of the track, and the inverted U-shaped bracket slides along the track through the walking pulleys; Two cantilever main beams are fixedly connected to the bottom of each top cross bar through two end hangers, and the templates are laid on the cantilever main beams arranged in front and behind; a supporting cross bar is connected between the lower parts of the two end hangers, a middle hanger is connected between the middle part of the supporting cross bar and the middle part of the top cross bar, and the middle hanger is located between the two end hangers; Among them, the lengths of the top cross bar, the end hanger, the middle hanger and the bracing cross bar are all adjustable, and the top cross bar and the end hanger and the middle hanger are all connected by corner sleeves, the bracing cross bar and the end hanger and the middle hanger are all connected by corner sleeves, and fixed ends are provided at both ends of each corner sleeve. 2. The walking formwork device for a U-shaped groove top cantilevered concrete structure according to claim 1, characterized in that the top cross bar, the end suspension rods, the middle suspension rods and the bracing cross bars all include a plurality of rods, and adjacent rods are connected by adjustable joints; An adjustable joint is arranged on the top cross bar between the end hanger and the middle hanger, and an adjustable joint is arranged on the supporting cross bar between the end hanger and the middle hanger. 3. The walking formwork device for a U-shaped groove top cantilevered concrete structure as described in claim 1 is characterized in that the cantilevered main beam is welded and fixed to the end hanger. 4. The walking formwork device for a U-shaped groove top cantilevered concrete structure as described in claim 1, characterized in that the track is a channel steel track. 5. The walking formwork device for a U-shaped groove top cantilevered concrete structure as described in claim 1 is characterized in that side pull rods are connected between the end suspension rods correspondingly arranged at the front and rear and the middle suspension belts correspondingly arranged at the front and rear. 6. The walking formwork device for a cantilevered concrete structure on the top of a U-shaped groove as described in claim 1 is characterized in that a tension cross bar is connected between the middle parts of the two supporting uprights of any inverted U-shaped bracket, and the length of the tension cross bar is adjustable. 7. The walking formwork device for a U-shaped groove top cantilevered concrete structure as described in claim 1 is characterized in that the fixed end includes two end plates, the lower ends of the two end plates are connected by hinges to form an openable and closable structure, and the upper ends of the two end plates are detachably connected together by fastening bolts. 8. The walking formwork device for a U-shaped groove top cantilevered concrete structure as described in claim 7, characterized in that a rubber pad is provided between the fixed end and the rod.