Top self-adaptive contact supporting device

Abstract

The utility model discloses a top self-adaptive contact supporting device which comprises a base, a supporting frame and a distribution beam, and the base is used for being placed on the ground. The supporting frame is arranged on the base, and a plurality of supporting grooves which are transversely arranged are formed in the top of the supporting frame; the distribution beams are arranged on the multiple supporting grooves, and the length of the distribution beams is matched with the transverse size of the cast-in-place box beam so as to support all transverse areas of the cast-in-place box beam. When the cast-in-place box girder is cut and dismantled, the supporting device is arranged on the ground below the cast-in-place box girder, the length direction of the distributive girder on the top of the supporting frame is parallel to the transverse direction of the cast-in-place box girder so that the distributive girder can support all areas of the cast-in-place box girder in the transverse direction, and cutting is conducted before and after the cast-in-place box girder is cut. The distribution beams can tightly abut against the beam bottoms of various cast-in-place box beams so as to stably support the cast-in-place box beams, inclination or toppling caused by uneven transverse stress of the cast-in-place box beams is avoided, stability is good, and safety is high.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering equipment technology, and in particular to a support device for supporting cast-in-place box girders. Background Technology

[0002] During the implementation of highway reconstruction and expansion projects, the clearance height of bridges crossing the main line changed due to the adjustment of the main line surface elevation. Some bridges could not meet the safety requirements and needed to be demolished and rebuilt. However, bridge demolition was affected by traffic organization conditions. In particular, for overpasses crossing the main line and ramps before and after the interchanges, since the ownership of the ramps belonged to different highway management units, there were situations where the ramps could not be closed when the overpasses were demolished. Therefore, the overpass demolition work could only be carried out in stages according to the road closure and diversion situation.

[0003] Phased demolition requires the erection of temporary scaffolding to support the cast-in-place box girder. Typically, double rows of steel pipe columns are installed on the concrete foundation as temporary supports. During phased demolition, the cast-in-place box girder between the temporary supports needs to be cut and removed. This causes changes in the structural stress of the remaining part of the cast-in-place box girder before and after the cut. The double rows of steel pipe columns that were originally in close contact with the bottom of the cast-in-place box girder may now be subjected to a single row of pipes. The steel pipe columns change from being subjected to a single axial force to being subjected to both axial force and horizontal thrust. The steel pipe columns are prone to tilting and falling, posing significant safety hazards and high risks. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a top adaptive contact support device that can stably support cast-in-place box girders that are being cut and dismantled, with high safety.

[0005] A top adaptive contact support device according to an embodiment of the present utility model includes: a base, a support frame, and a distribution beam. The base is placed on the ground; the support frame is mounted on the base, and the top of the support frame is provided with a plurality of horizontally arranged support grooves; the distribution beam is mounted on the plurality of support grooves, and the length of the distribution beam is matched with the transverse dimension of the cast-in-place box girder to support various transverse areas of the cast-in-place box girder.

[0006] It has at least the following beneficial effects:

[0007] The length of the cast-in-place box girder is longitudinal, and its width is transverse. When cutting and dismantling the cast-in-place box girder, a base is placed on the ground beneath it. This ground can be a concrete structure or uncovered soil. A support frame is then placed on the base. The length of the distribution beam on top of the support frame is parallel to the transverse direction of the cast-in-place box girder, ensuring that the distribution beam supports various areas of the cast-in-place box girder in the transverse direction. Before and after cutting the cast-in-place box girder, the distribution beam can firmly abut against the bottom of each girder, stably supporting the cast-in-place box girder and preventing tilting or collapse due to uneven transverse stress. This provides good stability and high safety. The base has a large area, preventing significant ground subsidence, and the position of the support device can be quickly adjusted by moving the base. Installation and dismantling are relatively simple, and the support device can be reused.

[0008] According to some embodiments of the present invention, it also includes a plurality of wheels, which are disposed at the bottom of the support frame to enable the support frame to move.

[0009] According to some embodiments of the present invention, the walking wheel is connected to the bottom of the support frame through a lifting drive mechanism. The lifting drive mechanism can drive the walking wheel and the support frame to move away from or closer to each other in order to adjust the height of the support frame.

[0010] According to some embodiments of this utility model, the lifting drive mechanism is one of a cylinder, a hydraulic cylinder, and a lead screw sliding pair.

[0011] According to some embodiments of the present invention, the base is plate-shaped, and both ends of the base, either longitudinally or laterally, are provided with ramp structures, and the traveling wheels can abut against the ramp structures.

[0012] According to some embodiments of the present invention, the support frame includes a frame-shaped bottom frame and a plurality of support groups disposed on the bottom frame. The plurality of support groups are distributed laterally, and the top of each of the plurality of support groups is provided with the support groove.

[0013] According to some embodiments of the present invention, the support assembly includes two diagonal rods and several connecting rods. The lower ends of the two diagonal rods are respectively connected to the two ends of the bottom frame in the longitudinal or transverse direction. The upper ends of the two diagonal rods are connected together, and the upper ends of the two diagonal rods form the support groove. The two ends of the connecting rods are respectively connected to the two diagonal rods.

[0014] According to some embodiments of this utility model, the bottom frame, the diagonal brace, and the connecting rod are all made of I-beams.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded structural diagram of an embodiment of the present utility model;

[0019] Reference numerals: base 100, support frame 200, support groove 210, bottom frame 220, diagonal brace 230, connecting rod 240, distribution beam 300, and traveling wheel 400. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Reference Figure 1 and Figure 2 This utility model discloses a top adaptive contact support device, including: a base 100, a support frame 200 and a distribution beam 300. The base 100 is placed on the ground; the support frame 200 is disposed on the base 100, and the top of the support frame 200 is provided with a plurality of horizontally arranged support grooves 210; the distribution beam 300 is disposed on the plurality of support grooves 210, and the length of the distribution beam 300 is matched with the transverse dimension of the cast-in-place box girder to support the various transverse areas of the cast-in-place box girder.

[0024] The length direction of the cast-in-place box girder is longitudinal, and the width direction is transverse. When cutting and dismantling the cast-in-place box girder, the base 100 is placed on the ground below the cast-in-place box girder. This ground can be a concrete structure or uncovered soil. Then, the support frame 200 is placed on the base 100. The length direction of the distribution beam 300 on the top of the support frame 200 is parallel to the transverse direction of the cast-in-place box girder, so that the distribution beam 300 supports the various areas of the cast-in-place box girder in the transverse direction. Before and after cutting the cast-in-place box girder, the distribution beam 300 can be tightly pressed against the bottom of the various cast-in-place box girders to stably support the cast-in-place box girder and avoid tilting or falling due to uneven transverse force on the cast-in-place box girder. It has good stability and high safety. The base 100 has a large area, which can avoid large ground depressions. The position of the support device can be quickly adjusted by moving the base 100. The installation and dismantling methods are relatively simple, and the support device can be reused.

[0025] Reference Figure 2 In some embodiments, the top adaptive contact support device further includes multiple traveling wheels 400, which are located at the bottom of the support frame 200 to enable the support frame 200 to move. The support frame 200 moves on the ground and base 100 via the traveling wheels 400, eliminating the need for hoisting the support frame 200; it can be moved by pushing and pulling, saving time and effort. The distribution beam 300 can be pre-installed on the support frame 200 so that it moves with the support frame 200; alternatively, the distribution beam 300 can be installed on the support frame 200 after it has been installed in place.

[0026] In some embodiments, the traveling wheels 400 are connected to the bottom of the support frame 200 via a lifting drive mechanism (not shown in the figure). The lifting drive mechanism can drive the traveling wheels 400 and the support frame 200 to move away from each other or closer together to adjust the height of the support frame 200. When the lifting drive mechanism drives the traveling wheels 400 and the support frame 200 to move away from each other, the traveling wheels 400 abut against the ground or base 100, and the height of the support frame 200 is increased; conversely, when the lifting drive mechanism drives the traveling wheels 400 and the support frame 200 to move closer together, the height of the support frame 200 is decreased. The adjustable height of the support frame 200 and the distribution beam 300 facilitates their movement and makes the support device suitable for supporting cast-in-place box girders of different heights.

[0027] It is understood that one of the body and output end of the lifting drive mechanism is connected to the support frame 200, and the other is connected to the traveling wheel 400. The movement direction of the output end of the lifting drive mechanism is vertical. When the lifting drive mechanism drives the traveling wheel 400 and the support frame 200 to move closer to each other, the bottom of the traveling wheel 400 can be flush with the bottom of the support frame 200 or higher than the bottom of the support frame 200, so that the bottom of the support frame 200 directly rests on the ground or base 100. This prevents the support frame 200 from moving accidentally on the ground or base 100. The traveling wheel 400 is steerable to adjust the movement direction of the support frame 200. The traveling wheel 400 has a locking mechanism to lock the traveling wheel 400, thereby locking the position of the support frame 200 and preventing accidental movement of the support frame 200.

[0028] In some of these embodiments, the lifting drive mechanism is one of a cylinder, a hydraulic cylinder, and a lead screw sliding pair.

[0029] Reference Figure 1 or Figure 2 In some embodiments, the base 100 is plate-shaped, and both ends of the base 100, either longitudinally or laterally, are provided with ramp structures. The walking wheel 400 can rest on the ramp structure. The ramp structure is used to allow the walking wheel 400 to move. The ramp structure facilitates the movement of the walking wheel 400 and the support frame 200 from the ground to the base 100, or facilitates the movement of the walking wheel 400 and the support frame 200 from the base 100 to the ground.

[0030] In some embodiments, the support frame 200 includes a frame-shaped base frame 220 and multiple support groups disposed on the base frame 220. The base frame 220 can directly rest against the base 100 or the ground to support the multiple support groups. The multiple support groups are distributed laterally, and each of the multiple support groups has a support groove 210 on its top. The multiple support groups support the distribution beam 300.

[0031] In another embodiment, the bottom frame 220 is provided with multiple lifting drive mechanisms, the output ends of the multiple lifting drive mechanisms are all facing downward and are all connected to walking wheels 400.

[0032] The planes on which the multiple support groups are located are parallel to each other. The support groups and the base frame 220 are connected to form a stable triangular structure, ensuring structural strength and providing sufficient support.

[0033] Reference Figure 1 or Figure 2In some embodiments, the support assembly includes two diagonal rods 230 and several connecting rods 240. The lower ends of the two diagonal rods 230 are respectively connected to the two ends of the bottom frame 220 in the longitudinal or transverse direction. The upper ends of the two diagonal rods 230 are connected, and the upper ends of the two diagonal rods 230 form a support groove 210. The two ends of the connecting rods 240 are respectively connected to the two diagonal rods 230.

[0034] In this embodiment, the lower ends of the two diagonal braces 230 are respectively connected to the two ends of the longitudinal direction on the bottom frame 220. Since most cast-in-place box girders have an inclination, the force exerted by the cast-in-place box girder on the support device has a component force in the longitudinal direction. That is, the support group is subjected to a component force in the longitudinal direction. When the lower ends of the two diagonal braces 230 are respectively connected to the two ends of the longitudinal direction on the bottom frame 220, the diagonal braces 230 can better offset this component force, improve the support force of the entire support device, and ensure the structural stability of the support device.

[0035] In this embodiment, there are two connecting rods 240, with the two diagonal rods 230 and the two connecting rods 240 arranged on the same plane. Tie rods (not shown in the figure) can be installed between the support groups to increase the supporting force of the entire support frame 200.

[0036] In some embodiments, the base frame 220, diagonal brace 230, and connecting rod 240 are all made of I-beams, which are readily available.

[0037] It is conceivable that the connection between the bottom frame 220 and the diagonal brace 230, as well as the connection between the diagonal brace 230 and the connecting rod 240, is achieved by welding. The I-beam has two parallel side plates and a middle plate that connects the two side plates together at their midpoints.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A top adaptive contact support device, characterized in that, include: Base (100), for placement on the ground; A support frame (200) is provided on the base (100), and the top of the support frame (200) is provided with a plurality of horizontally arranged support grooves (210); A distribution beam (300) is provided on a plurality of the support grooves (210), the length of the distribution beam (300) is matched with the transverse dimension of the cast-in-place box girder to support the various transverse areas of the cast-in-place box girder.

2. The top adaptive contact support device according to claim 1, characterized in that, It also includes a plurality of wheels (400) located at the bottom of the support frame (200) to enable the support frame (200) to move.

3. The top adaptive contact support device according to claim 2, characterized in that, The walking wheel (400) is connected to the bottom of the support frame (200) through a lifting drive mechanism. The lifting drive mechanism can drive the walking wheel (400) and the support frame (200) to move away from each other or closer to each other in order to adjust the height of the support frame (200).

4. The top adaptive contact support device according to claim 3, characterized in that, The lifting drive mechanism is one of the following: a pneumatic cylinder, a hydraulic cylinder, and a lead screw sliding pair.

5. The top adaptive contact support device according to claim 1, characterized in that, The support frame (200) includes a frame-shaped base frame (220) and multiple support groups all disposed on the base frame (220). The multiple support groups are distributed laterally, and the top of each of the multiple support groups is provided with the support groove (210).

6. The top adaptive contact support device according to claim 5, characterized in that, The support assembly includes two diagonal rods (230) and several connecting rods (240). The lower ends of the two diagonal rods (230) are respectively connected to the two ends of the bottom frame (220) in the longitudinal or transverse direction. The upper ends of the two diagonal rods (230) are connected, and the upper ends of the two diagonal rods (230) form the support groove (210). The two ends of the connecting rods (240) are respectively connected to the two diagonal rods (230).

7. The top adaptive contact support device according to claim 6, characterized in that, The bottom frame (220), the diagonal brace (230), and the connecting rod (240) are all made of I-beams.

8. The top adaptive contact support device according to claim 1, characterized in that, The base (100) is plate-shaped, and both ends of the base (100) in the longitudinal or transverse direction are provided with sloping structures.

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