Prefabricated box girder reshipment device

Abstract

The utility model discloses a prefabricated box girder reshipment device, which belongs to the technical field of prefabricated box girders and comprises a ground, four fixing tables are arranged on the ground, and auxiliary supporting mechanisms are arranged on the four fixing tables. According to the upper cross beam supporting device, the electric telescopic rod is used for driving the bearing pin shafts to extend out of the inner cavity of the telescopic groove, meanwhile, the two bearing pin shafts on the side portion of the guide column are inserted into the supporting arc groove, and auxiliary supporting is conducted on the upper cross beam through cooperation of the supporting arc groove, the bearing pin shafts and the guide column; in addition, when a first bearing oil cylinder drives the upper cross beam and the concrete prefabricated box girder to move downwards, an electric telescopic rod is gradually used for driving a bearing pin shaft to be separated from an inner cavity of a supporting arc groove, so that supporting of the supporting arc groove, the bearing pin shaft and a guide column to the upper cross beam is relieved, and the electric telescopic rod is used for controlling stretching and retracting of the bearing pin shaft; and the problem of poor manual adjustment convenience of constructors is avoided.

Description

Technical Field

[0001] This utility model relates to the field of precast box girder technology, and more specifically, to a precast box girder transport device. Background Technology

[0002] Precast box girders are concrete box girders prefabricated in factories or prefabrication sites. After being transported to the construction site, they are directly assembled into large-span structures. Compared to traditional cast-in-place box girders, precast box girders offer advantages such as shorter production cycles, controllable quality, faster construction speed, and lower costs. After prefabrication in the factory, the box girders need to be transported by vehicles. When transported to the erection point, the box girders need to be unloaded from the transport vehicles for erection using an integrated transport and erection machine.

[0003] A search revealed that utility model patent CN222453651U discloses a precast box girder transport device. The device includes a support transport frame set on the ground to support and fix the precast box girder. Four sets of support transport frames are provided, each supporting one of the four corners of the precast box girder. Each support transport frame includes: a base beam set on the ground; an upper crossbeam that slides along the direction close to or away from the base beam and is used to support the precast box girder; and a drive assembly set on the base beam to drive the upper crossbeam to slide. This application fixes all four sets of support transport frames on the ground, drives the upper crossbeam to slide to a designated height using the drive assembly, then a transport vehicle transports the precast box girder to the transport site. The drive assembly lifts the precast box girder, and after it rises a certain distance, the transport vehicle withdraws. A transport-frame integrated machine then lifts the precast box girder, facilitating its transport. However, the above-mentioned patent still has the following shortcomings: When the bearing cylinder drives the upper crossbeam and guide column to move up and down, it is necessary to manually insert the bearing pin into the positioning hole so as to strengthen the support of the precast box girder through the bearing pin and guide column. However, the construction workers need to climb multiple steps frequently, which affects their work efficiency. At the same time, the construction workers are located below the upper crossbeam, which is also dangerous. Moreover, when the precast box girder is supported by the side contact between the upper crossbeam and the precast box girder, the contact area between the upper crossbeam and the precast box girder is limited, which affects its support strength. Therefore, we have proposed a precast box girder transport device. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a precast box girder transport device.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A precast box girder transport device includes a ground surface. Four fixed platforms are positioned on the ground surface, and auxiliary support mechanisms are installed on each platform. A mounting base is fixedly installed on the top of each platform. Two support pipes are fixedly connected to the top surface of each mounting base. A fixed frame is fixedly connected to the top of each pair of support pipes. A first bearing cylinder is fixedly installed on the top surface of each mounting base. The output ends of the four first bearing cylinders extend to the top of the fixed frame and are fixedly connected to an upper crossbeam. Rubber pads are fixedly connected to the top surface of each upper crossbeam. A precast concrete box girder is placed on each rubber pad. Two movable holes are formed on the top surface of each fixed frame. Support arc grooves are provided on both sides of the top of each movable hole. Two guide columns are fixedly connected to the bottom surface of each upper crossbeam. The bottom ends of the guide columns pass through the movable holes and are movably sleeved into the inner cavity of the support pipes. Multiple telescopic grooves are formed on both sides of each guide column. Electric telescopic rods are fixedly connected to the inner walls of each telescopic groove. Bearing pins are fixedly connected to the ends of each electric telescopic rod.

[0007] As a preferred embodiment of the present invention, the auxiliary support mechanism includes multiple mounting slots formed on four fixed platforms. The bottom of each of the multiple mounting slots is fixedly installed with a second bearing cylinder, and the top of each of the multiple second bearing cylinders extends to the top of the fixed platform and is fixedly connected to a support plate.

[0008] As a preferred embodiment of this utility model, the two ends of the fixing frame are respectively fixedly connected with inclined bracing plates, and the bottom end of the inclined bracing plates is in contact with the top surface of the fixing platform.

[0009] In a preferred embodiment of this utility model, the outer diameter of the guide post is equal to the inner diameter of the movable hole and the support tube, respectively.

[0010] In a preferred embodiment of this utility model, the inner diameter of the supporting arc groove is equal to the outer diameter of the bearing pin.

[0011] As a preferred embodiment of this utility model, a control box is provided on the top surface of the ground, a door is hinged to the outside of the control box, a battery is provided inside the control box, and a control panel is fixedly installed on the inner wall of the control box.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] (1) In this utility model, after the guide column moves upward with the upper crossbeam, multiple electric telescopic rods located above the fixed frame on the guide column are activated. The electric telescopic rods drive the bearing pin to extend out of the inner cavity of the telescopic groove, and at the same time, the two bearing pins on the side of the guide column are inserted into the supporting arc groove. The upper crossbeam is assisted by the cooperation of the supporting arc groove, the bearing pin, and the guide column. When the first bearing cylinder drives the upper crossbeam and the precast concrete box girder to move downward, the electric telescopic rods are gradually used to drive the bearing pin to disengage from the inner cavity of the supporting arc groove, thereby releasing the support of the supporting arc groove, the bearing pin, and the guide column on the upper crossbeam. The extension and retraction of the bearing pin is controlled by the electric telescopic rods, avoiding the problem of poor convenience of manual adjustment by construction personnel. At the same time, it reduces the danger of construction personnel being below the precast concrete box girder and improves the practicality of the precast box girder transport device.

[0014] (2) In this utility model, by using the installation groove, the second bearing cylinder and the support plate together, after the concrete precast box girder is lifted up from the vehicle by multiple upper crossbeams and rubber pads, the second bearing cylinder drives the support plate to move up so that its top surface and the bottom surface of the concrete precast box girder are in contact. The support plate is used to lift the concrete precast box girder, increasing the contact surface for supporting the concrete precast box girder and ensuring the supporting force of the concrete precast box girder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the pre-embedded mounting platform of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the fixing platform of this utility model;

[0018] Figure 4 This is a cross-sectional schematic diagram of the guide column of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the support plate of this utility model;

[0020] Figure 6 This is a cross-sectional view of the control box of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Ground; 2. Fixed platform; 3. Auxiliary support mechanism; 4. Mounting base; 5. Support pipe; 6. Fixing frame; 7. First load-bearing cylinder; 8. Upper crossbeam; 9. Rubber pad; 10. Movable hole; 11. Support arc groove; 12. Guide column; 13. Telescopic groove; 14. Electric telescopic rod; 15. Load-bearing pin; 16. Mounting groove; 17. Second load-bearing cylinder; 18. Support plate; 19. Precast concrete box girder; 20. Diagonal brace plate; 21. Control box; 22. Battery; 23. Control panel; 24. Box door. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1-6A precast box girder transport device includes a ground surface 1, on which four fixed platforms 2 are arranged. Auxiliary support mechanisms 3 are arranged on the four fixed platforms 2. Mounting bases 4 are fixedly installed on the top of each of the four fixed platforms 2. Two support pipes 5 are fixedly connected to the top surface of each of the four mounting bases 4. A fixing frame 6 is fixedly connected to the top of each pair of support pipes 5. First bearing cylinders 7 are fixedly installed on the top surface of each of the four mounting bases 4. The output ends of the four first bearing cylinders 7 extend to the top of the fixing frame 6 and are fixedly connected to upper crossbeams 8. The top surfaces of the four upper crossbeams 8 are fixedly connected to... There are rubber pads 9, and precast concrete box girders 19 are placed on the four rubber pads 9. The top surface of the fixing frame 6 has two movable holes 10. The top two sides of the movable holes 10 are respectively provided with supporting arc grooves 11. The bottom surfaces of the four upper crossbeams 8 are respectively fixedly connected to two guide columns 12. The bottom ends of the guide columns 12 pass through the movable holes 10 and are movably sleeved into the inner cavity of the support tube 5. Multiple telescopic grooves 13 are respectively opened on both sides of the guide columns 12. Electric telescopic rods 14 are respectively fixedly connected to the inner walls of the multiple telescopic grooves 13. The ends of the multiple electric telescopic rods 14 are respectively fixedly connected to the bearing pins 15.

[0028] For details, please refer to Figure 1 , Figure 3 and Figure 5 The auxiliary support mechanism 3 includes multiple mounting slots 16 opened on four fixed platforms 2. The bottom of the inner cavity of each of the multiple mounting slots 16 is fixedly installed with a second bearing cylinder 17. The top of each of the multiple second bearing cylinders 17 extends to the top of the fixed platform 2 and is fixedly connected to a support plate 18.

[0029] In this embodiment, when the vehicle moves the precast concrete box girder 19 above the four upper crossbeams 8, the bottom surface of the support plate 18 and the top surface of the ground 1 are in contact, so that the vehicle can move directly onto the support plate 18 for unloading. When the vehicle moves away from the support plate 18, the second bearing cylinder 17 is used to move the support plate 18 upward, so that the top surface of the support plate 18 and the bottom surface of the precast concrete box girder 19 are in contact, so as to lift the precast concrete box girder 19.

[0030] For details, please refer to Figure 3 The two ends of the fixed frame 6 are respectively fixedly connected with diagonal bracing plates 20, and the bottom end of the diagonal bracing plates 20 is in contact with the top surface of the fixed platform 2.

[0031] In this embodiment, the fixed frame 6 is reinforced and supported by the diagonal bracing plate 20.

[0032] For details, please refer to Figure 3 The outer diameter of the guide post 12 is equal to the inner diameter of the movable hole 10 and the support tube 5, respectively.

[0033] In this embodiment, the stability of the guide post 12 in the movable hole 10 and the inner cavity of the support tube 5 is ensured.

[0034] For details, please refer to Figure 3 The inner diameter of the supporting arc groove 11 is equal to the outer diameter of the bearing pin 15.

[0035] In this embodiment, the stability of the bearing pin 15 in the inner cavity of the supporting arc groove 11 is ensured, and the upper crossbeam 8 is reinforced by the supporting arc groove 11, the bearing pin 15 and the guide column 12.

[0036] For details, please refer to Figure 1 and Figure 4 A control box 21 is installed on the top surface of ground 1. A door 24 is hinged to the outside of the control box 21. A battery 22 is installed inside the control box 21. A control panel 23 is fixedly installed on the inner wall of the control box 21.

[0037] In this embodiment, the device is powered by a storage battery 22 and controlled by a control panel 23.

[0038] Working principle: In use, the vehicle carrying the precast concrete box girder 19 is first moved directly onto the support plate 18. At this time, the four upper crossbeams 8 are directly below the sides of the precast concrete box girder 19. The first bearing cylinder 7 is activated to move the upper crossbeams 8 and rubber pads 9 upward, so that the top surface of the rubber pads 9 is in contact with the bottom surface of the side of the precast concrete box girder 19. The first bearing cylinder 7, the upper crossbeams 8, and the rubber pads 9 are used to lift the precast concrete box girder 19, so that the precast concrete box girder 19 is detached from the vehicle, allowing the vehicle to move away from under the precast concrete box girder 19. In addition, the upper crossbeams 8 are also positioned below the support plate 18. During the upward movement of beam 8, the guide column 12 is moved upward, and multiple electric telescopic rods 14 located above the fixed frame 6 on the guide column 12 are activated. The electric telescopic rods 14 drive the bearing pins 15 to extend out of the inner cavity of the telescopic groove 13, while two of the bearing pins 15 on the side of the guide column 12 are inserted into the supporting arc groove 11. The supporting arc groove 11, the bearing pins 15 and the guide column 12 work together to provide auxiliary support for the upper crossbeam 8. Then, multiple second bearing cylinders 17 are activated to move the support plate 18 upward, so that the top surface of the support plate 18 and the bottom surface of the precast concrete box girder 19 are aligned. The precast concrete box girder 19 is then further supported using the second bearing cylinder 17 and the support plate 18. When the precast concrete box girder 19 needs to be lowered, two of the electric telescopic rods 14 on the guide column 12 are activated, causing two bearing pins 15 to disengage from the inner cavity of the support arc groove 11 and retract into the inner cavity of the telescopic groove 13. The other protruding bearing pins 15 remain unchanged. At this time, the first bearing cylinder 7 and the second bearing cylinder 17 are activated, causing the upper crossbeam 8 and the support plate 18 to move lower synchronously, thereby lowering the precast concrete box girder 19. The distance of this downward movement is equivalent to two vertically arranged... The distance between the bearing pins 15 is such that when another set of bearing pins 15 moves into the inner cavity of the supporting arc groove 11, the other two electric telescopic rods 14 are activated again to drive the two bearing pins 15 to disengage from the inner cavity of the supporting arc groove 11 and retract into the inner cavity of the telescopic groove 13, so that the first bearing cylinder 7 and the second bearing cylinder 17 can continue to drive the precast concrete box girder 19 to move down, until the bottom surface of the support plate 18 and the top surface of the ground 1 are in contact, so that the precast concrete box girder 19 is placed on the support plate 18. Finally, the precast concrete box girder 19 is transported and erected using the integrated transport and erection machine.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A prefabricated box girder transporting device, comprising a ground (1), characterized in that: Four fixed platforms (2) are provided on the ground (1). Auxiliary support mechanisms (3) are provided on the four fixed platforms (2). Mounting bases (4) are fixedly installed on the top of each of the four fixed platforms (2). Two support pipes (5) are fixedly connected to the top surface of each of the four mounting bases (4). A fixing frame (6) is fixedly connected to the top of each pair of support pipes (5). First bearing cylinders (7) are fixedly installed on the top surface of each of the four mounting bases (4). The output ends of the four first bearing cylinders (7) extend to the top of the fixing frame (6) and are fixedly connected to an upper crossbeam (8). Rubber pads (9) are fixedly connected to the top surface of each of the four upper crossbeams (8). A precast concrete box girder (19) is placed on the rubber pad (9). The top surface of the fixing frame (6) has two movable holes (10). Supporting arc grooves (11) are provided on both sides of the top of the movable holes (10). Two guide columns (12) are fixedly connected to the bottom surfaces of the four upper crossbeams (8). The bottom ends of the guide columns (12) pass through the movable holes (10) and are movably sleeved into the inner cavity of the support tube (5). Multiple telescopic grooves (13) are provided on both sides of the guide columns (12). Electric telescopic rods (14) are fixedly connected to the inner walls of the multiple telescopic grooves (13). Bearing pins (15) are fixedly connected to the ends of the multiple electric telescopic rods (14).

2. The precast box girder transporting device according to claim 1, wherein: The auxiliary support mechanism (3) includes multiple mounting slots (16) opened on four fixed platforms (2). The bottom of the inner cavity of each of the multiple mounting slots (16) is fixedly installed with a second bearing cylinder (17). The top of each of the multiple second bearing cylinders (17) extends to the top of the fixed platform (2) and is fixedly connected with a support plate (18).

3. The precast box girder handling device of claim 1, wherein: The two ends of the fixed frame (6) are respectively fixedly connected with diagonal bracing plates (20), and the bottom end of the diagonal bracing plates (20) is in contact with the top surface of the fixed platform (2).

4. The precast box girder handling device of claim 1, wherein: The outer diameter of the guide post (12) is equal to the inner diameter of the movable hole (10) and the support tube (5).

5. The precast box girder handling device of claim 1, wherein: The inner diameter of the supporting arc groove (11) is equal to the outer diameter of the bearing pin (15).

6. The precast box girder handling apparatus of claim 1 wherein: A control box (21) is provided on the top surface of the ground (1). A door (24) is hinged to the outside of the control box (21). A battery (22) is provided inside the control box (21). A control panel (23) is fixedly installed on the inner wall of the control box (21).

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