Moving trolley suitable for dismantling support under condition of limited beam bottom space

Abstract

The utility model discloses a moving trolley suitable for dismantling a support under the condition that the beam bottom space is limited. The moving trolley comprises a moving base, a supporting beam, a lifting device and a longitudinal driving device. The lifting device is fixedly installed on the upper side face of the supporting beam and comprises two lifting winches. A first lifting lug and a steering wheel are arranged at the two ends of the supporting beam; the movable base is fixedly installed on the lower side face of the supporting beam and comprises a plurality of sets of tank wheels arranged on the movable base. And the longitudinal driving device is used for driving the movable base to move. Through the moving trolley type structural design, the longitudinal driving device drives the whole device to longitudinally move along the bridge floor, so that the device is particularly suitable for hoisting operation under the specific operation condition that the beam bottom space is limited, the overall operation efficiency of dismantling a temporary pier column support structure is improved, the bridge engineering construction speed is increased, and the project construction period is shortened; the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile hoisting equipment for road and bridge engineering, in particular to a mobile trolley suitable for removing brackets under the condition of limited beam bottom space. Background Technique

[0002] During the construction of bridge engineering, especially in the construction of long-span bridge sections, it is often necessary to build temporary pier support structures to assist in the construction of the bridge. These temporarily built pier support structures play a role in temporarily supporting and fixing the bridge sections to facilitate the connection and construction between the bridge deck segments. After the construction of the bridge deck segments is completed, it is necessary to remove these temporarily built pier support structures. In the actual removal process, on the one hand, limited by the upper limit of the lifting load capacity of the lifting equipment, the overall weight of the pier support structure far exceeds the single lifting weight of the lifting equipment. Therefore, the removal of the temporary pier support structure must be completed through multiple lifting operations. On the other hand, since the construction of the bridge deck segments has been completed or basically completed at this time, the beam bottom space between the bridge deck segments of the bridge and the temporary pier support structure is very limited, which is very inconvenient for lifting operations. In particular, the existing conventional crawler crane operations have relatively high requirements for the specific operation space and are not suitable for directly carrying out large-scale lifting operations on the temporary pier support structure. Therefore, it is necessary to design and develop corresponding hoisting operation device equipment suitable for this specific operation situation with limited beam bottom space, so as to improve the overall operation efficiency of removing the temporary pier support structure, speed up the construction speed of the bridge project, shorten the project duration, and reduce costs. Content of the Utility Model

[0003] Aiming at the above problems, the utility model provides a mobile trolley suitable for removing brackets under the condition of limited beam bottom space. The technical solution of the utility model is as follows:

[0004] A mobile trolley suitable for removing brackets under the condition of limited beam bottom space includes a mobile base, a support beam, a lifting device, and a longitudinal driving device; the lifting device is fixedly installed on the upper side of the support beam and includes two lifting winches; first lifting lugs and steering wheels are arranged at both ends of the support beam; the mobile base is fixedly installed on the lower side of the support beam and includes a plurality of groups of tank wheels arranged on the mobile base; the longitudinal driving device is used to drive the movement of the mobile base.

[0005] As a further description of the utility model, it further includes a balance beam, second lifting lugs are arranged at both ends of the balance beam, and a third lifting lug is arranged in the middle section of the balance beam.

[0006] Furthermore, the support beam and the balance beam are connected and combined by four groups of Bailey beams.

[0007] Further, the lifting cable of the lifting winch is connected to the second lifting ear of the crossbeam through a pulley block.

[0008] Further, the lifting winch is fixedly installed on the support beam through channel steel, and a channel steel riding fixing structure is formed between the channel steel and the support beam.

[0009] Further, the longitudinal driving device is a driving winch, and the driving winch is fixedly connected to the moving base.

[0010] Further, the first lifting ear is fixedly installed on the support beam through double-channel steel, and the second and third lifting ears are fixedly installed on the crossbeam through double-channel steel or stiffening plate structures.

[0011] Advantages of the present utility model:

[0012] With the structural design of a mobile trolley, the present utility model can be driven by a longitudinal driving device to move longitudinally along the bridge deck as a whole, making it particularly suitable for hoisting operations in specific working conditions where the space under the beam is limited, so as to improve the overall working efficiency of the demolition of the temporary pier support structure, speed up the construction speed of the bridge project, shorten the project duration, and reduce costs. Description of the drawings

[0013] Figure 1 Front view of the mobile trolley structure applicable to the demolition of the support under the beam with limited space under the beam according to the embodiment of the present utility model;

[0014] Figure 2 Side view schematic diagram of the hoisting operation of the mobile trolley applicable to the demolition of the support under the beam with limited space under the beam according to the embodiment of the present utility model;

[0015] Figure 3 Schematic diagram of the installation and fixing structure of the lifting winch according to the embodiment of the present utility model;

[0016] Figure 4 Schematic diagram of the cooperation operation between the mobile trolley applicable to the demolition of the support under the beam with limited space under the beam according to the embodiment of the present utility model and the platform crawler crane.

[0017] Reference numerals: moving base 1, support beam 2, lifting winch 3, first lifting ear 4, steering wheel 5, crossbeam 6, second lifting ear 7, third lifting ear 8, Bailey beam 9, lifting cable 10, pulley block 11, channel steel 12, double-channel steel 13, steel pipe column 14, platform 15, crawler crane 16, steel box girder 17. Detailed implementation manners

[0018] Embodiment:

[0019] The following will describe the embodiments of the present utility model in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0021] As shown in the attached Figures 1-4 As shown in the figure, a mobile trolley applicable to the removal of brackets in the case of limited space at the bottom of a beam in this embodiment includes a mobile base 1, a support beam 2, a lifting device, and a longitudinal driving device; the lifting device is fixedly installed on the upper side of the support beam 2 and includes two lifting winches 3; first lifting lugs 4 and steering wheels 5 are provided at both ends of the support beam 2; the mobile base 1 is fixedly installed on the lower side of the support beam 2 and includes a plurality of sets of crawler wheels provided on the mobile base 1; the longitudinal driving device is used to drive the movement of the mobile base 1. Through the structural design of the mobile trolley type in the present utility model, it can move longitudinally along the bridge deck, making it particularly suitable for hoisting operations in specific working conditions with limited space at the bottom of the beam, so as to improve the overall working efficiency of the removal of the temporary pier bracket structure, speed up the construction speed of the bridge project, shorten the project duration, and reduce costs.

[0022] As a further description of the present utility model, it further includes a balance beam 6. Second lifting lugs 7 are provided at both ends of the balance beam 6, and a third lifting lug 8 is provided in the middle section of the balance beam 6. It is easy to understand that the second lifting lug 7 of the balance beam 6 is used for connecting with the lifting winch 3, and the third lifting lug 8 of the balance beam 6 is used for the specific bracket hoisting.

[0023] In this embodiment, the support beam 2 and the balance beam 6 are connected and combined by four groups of Bailey beams 9. The specific length of the Bailey beam 9 is determined according to the width of the steel box girder 17. Generally speaking, the length of the Bailey beam 9 is greater than the width of the steel box girder 17. For example, in this embodiment, the width of the steel box girder 17 is 20 meters, and the Bailey beam 9 with a length of 21 meters is actually used to form the support beam 2 and the balance beam 6 to meet the need for mobile hoisting in the limited space at the bottom of the beam.

[0024] In this embodiment, the lifting cable 10 of the lifting winch 3 is connected to the second lifting lug 7 of the balance beam 6 through a pulley block 11. In this way, through the multiple magnification effect of the pulley block 11 on the moment, the requirement for the lifting load capacity of the lifting winch 3 can be reduced.

[0025] In this embodiment, the lifting winch 3 is installed and fixed on the support beam 2 through the channel steel 12, and a channel steel riding-type fixing structure is formed between the channel steel 12 and the support beam 2, forming a stable installation connection fixing structure to ensure the stability and safety of equipment operation.

[0026] As a feasible implementation mode, in this embodiment, the longitudinal driving device is a driving winch, and the driving winch is fixedly connected to the mobile base 1, and the driving winch completes the traction longitudinal walking function of the mobile vehicle.

[0027] In this embodiment, the first lifting lug 4 is fixed to the support beam 2 via a double I-beam 13, and the second lifting lug 7 and the third lifting lug 8 are fixed to the shoulder beam 6 via a double I-beam 13 or a stiffening steel plate structure.

[0028] As shown in the attached drawings, in an actual application, the original tensioning platform base (the base is equipped with 6 sets of tank wheels, and the 3t winch fixed on the base completes the traction longitudinal walking function) is used on the bridge deck to make a bridge deck longitudinal movement trolley, and the two tensioning platform bases are connected into a whole through 4 sets of 21-meter Bailey beams 9, spanning a single bridge deck. The Bailey beam 9 and the tensioning platform are fixed in a riding style with channel steel. Two 8t winches and pulley blocks 11 are installed on the Bailey truss as a hoisting machine system. The winch is fixed on the double-piece I25 industrial steel, and the industrial steel and the Bailey beam 9 are fixed in a riding style with [10 channel steel. Four sets of 21-meter-long Baileys are assembled on the bottom platform of the beam to form a crossbeam spanning the width of the single bridge as a load-bearing shoulder beam 6. The shoulder beam 6 is connected by the two winch lifting systems of the bridge deck truss, and the lifting and moving functions are completed by the longitudinal movement trolley to remove the bottom bracket of the beam.

[0029] See attached Figure 4 As shown, the steel pipe column 14 is dismantled in sections and pieces. The first (top section) section is 12m long. The maximum total weight of a single section of the pipe column with three parallel joints is about 20t. The lifting function of the bridge deck truss crane is provided by two 8t winches equipped with a 4-fold pulley block 11 to meet the needs of dismantling. After the piece to be cut is connected with a jack rope, the winch 3 is lifted to make the truss crane fully stressed, and then the connection between the part to be removed and the part to be removed is released. Then, the winch is lifted to empty the cut steel pipe column 14 (parallel joint) and then longitudinally moved out of the top of the bracket, and slowly and steadily lowered to the platform 15, and then turned over and hoisted to the platform 15 with the crawler crane 16 to dismantle it, completing the removal of the top section.

[0030] After the removal of the first section of the steel pipe column 14, there is sufficient working space for the crawler crane 16 under the beam bottom. Therefore, for the other sections of the steel pipe column 14 and the horizontal bracings within the corresponding height range, the crawler crane 16 is used for assisting in the removal. The crawler crane 16 is connected to the steel pipe column 14 (horizontal bracing), and then the connection constraint between the steel pipe column 14 and the cushion beam is released. The floating crane slowly and steadily lifts it by approximately 0.5 m, and the steel pipe column 14 is horizontally moved out from under the steel box girder 17 and loaded onto the ship to complete the removal. When the crawler crane 16 operates under the steel box girder 17, it should avoid the collision of parts such as the boom with the beam body of the steel box girder 17.

[0031] The above description is only for the preferred embodiments of the present invention, but it should not be construed as a limitation to the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to vary. In general, all changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A mobile trolley applicable to the removal of supports under the condition of limited space at the bottom of a beam, characterized in that: It includes a mobile base, a support beam, a lifting device and a longitudinal driving device; the lifting device is fixedly installed on the upper side of the support beam and includes two lifting winches; first lifting lugs and steering wheels are arranged at both ends of the support beam; the mobile base is fixedly installed on the lower side of the support beam and includes a number of groups of crawler wheels arranged on the mobile base; the longitudinal driving device is used to drive the movement of the mobile base.

2. The mobile trolley applicable to the removal of the support under the condition of limited space at the bottom of the beam according to claim 1, wherein: It further includes a balance beam, second lifting lugs are arranged at both ends of the balance beam, and a third lifting lug is arranged in the middle section of the balance beam.

3. The mobile trolley applicable to the removal of the support under the condition of limited space at the bottom of the beam according to claim 2, wherein: The support beam and the balance beam are connected and combined by four groups of Bailey beams.

4. The mobile trolley applicable to the removal of the support under the condition of limited space at the bottom of the beam according to claim 3, characterized in that: The lifting cable of the lifting winch is connected to the second lifting lug of the balance beam through a pulley block.

5. The mobile trolley applicable to the removal of the support under the condition of limited space at the bottom of the beam according to claim 3, characterized in that: The lifting winch is fixedly installed on the support beam through channel steel, and a channel steel riding fixed structure is formed between the channel steel and the support beam.

6. The mobile trolley applicable to the removal of the support under the condition of limited space at the bottom of the beam according to claim 3, wherein: The longitudinal driving device is a driving winch, and the driving winch is fixedly connected to the mobile base.

7. The mobile trolley applicable to the removal of the support under the condition of limited space at the bottom of the beam according to claim 3, characterized in that: The first lifting lug is fixedly installed on the support beam through double-riveted I-beams, and the second and third lifting lugs are fixedly installed on the balance beam through double-riveted I-beams or stiffening plate structures.

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