Movable trolley suitable for high and low cross beams

Abstract

The utility model relates to a movable trolley suitable for high and low cross beams. The movable trolley comprises an operation table, protective fences are arranged on the periphery of the operation table, idler wheels are fixed to the bottom of one side of the operation table, an installation beam is installed on the portion, on the upper portion of the opposite side of the idler wheels, of the operation table, telescopic installation rods are arranged on the installation beam, and rolling wheels are installed on the installation rods. The rollers and the idler wheels are arranged on the left side and the right side respectively and can move on the large beam and the small beam respectively, a bottom supporting and top hanging structure is formed, a stable operation table is constructed between the large beam and the small beam so as to facilitate construction, meanwhile, the telescopic installation rods are adopted so as to adapt to the large beam and the small beam with different height differences, and the construction efficiency is improved. The construction requirements of different height differences are met, and the use is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering construction, and more specifically to a movable trolley suitable for high and low beams. Background Art

[0002] A tied arch bridge is a special type of arch bridge. It combines the two basic structures of beam and arch in an arch span structure to jointly bear the load, giving full play to the structural characteristics and combined effect of the beam being subjected to bending and the arch being subjected to compression, thereby saving materials. A tied arch bridge is a composite structure bridge composed of arch ribs, hangers (columns), tie rods, carriageway beams (slabs), and bridge deck systems working together. Its main characteristic is that the tie rods bear the horizontal thrust of the arch foot. In terms of its load-bearing characteristics, a tied arch bridge is an organic combination of an arch bridge, a beam bridge, and a suspension bridge. A tied arch bridge is an externally statically determinate structure, combining the large span capacity of an arch bridge with the strong adaptability to the foundation of a simply supported beam bridge.

[0003] Currently, steel box tied-arch bridges with cross-sectional beams require padding beneath the top plate joints during deck installation to enhance installation strength. This necessitates an access panel beneath the top plate for inter-segment patching. However, due to the significant height difference between the lower flanges of the beams, creating an installation platform entirely across the beams is costly, and conventional platforms are insufficient.

[0004] Therefore, it is necessary to propose a movable trolley suitable for high and low beams to solve the problem of inconvenient operation and construction when the lining is attached to the lower part of the top plate joint of the steel box tied arch bridge structure. Utility Model Content

[0005] The utility model provides a movable trolley suitable for high and low cross beams, which solves the problem of inconvenient operation and construction when a liner is attached to the lower part of the top plate joint of a box-tied arch bridge structure.

[0006] According to one aspect of the utility model, a movable trolley suitable for high and low beams is provided, comprising an operating platform, wherein guardrails are arranged around the operating platform, a roller is fixed to the bottom of one side of the operating platform, and a mounting beam is installed on the upper part of the operating platform on the opposite side of the roller, a retractable mounting rod is provided on the mounting beam, and a roller is installed on the mounting rod.

[0007] Preferably, based on the above scheme, the mounting rod includes an upper rod body, a lower rod body, a front baffle and a rear baffle, a baffle ring is provided at the bottom of the upper rod body, a baffle edge is provided at the top of the lower rod body, the upper rod body is sleeved on the lower rod body, and a spring is sleeved on the upper rod body, both ends of the spring are pressed between the baffle edge and the baffle ring, the front baffle and the rear baffle are spaced apart and connected by a cross beam, the lower rod body is installed on the cross beam, and the roller is rotatably installed between the front baffle and the rear baffle.

[0008] Preferably, based on the above solution, the roller includes a roller shaft and a wheel body, and the wheel body is rotatably mounted on the roller shaft.

[0009] Preferably, based on the above solution, the mounting beam is installed on the top of the operating platform in a truss structure and is located on the operating platform on the opposite side of the roller.

[0010] Preferably, based on the above solution, the roller includes a mounting seat, a rotating shaft and a rotating wheel, the rotating wheel is mounted on the mounting seat through the rotating shaft, and the mounting seat is mounted on the bottom of the operating table.

[0011] The utility model is a movable trolley suitable for high and low beams, which adopts rollers and wheels on the left and right sides respectively, and can move on the main beam and small beam respectively, forming a bottom support and top suspension structure, and constructing a stable operating platform between the main beam and the small beam to facilitate construction. At the same time, a retractable mounting rod is adopted to adapt to the main beam and small beam with different height differences, meet the construction needs of different height differences, and make it more convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0013] Figure 1 This is a schematic diagram of the structure of the movable trolley with high and low beams applicable to the present utility model;

[0014] Figure 2 This is a side view of the movable trolley suitable for high and low beams of the utility model;

[0015] Figure 3 This is a structural diagram of the roller and mounting rod of the utility model;

[0016] Figure 4 It is a partial cross-sectional view of the roller and the mounting rod of the utility model;

[0017] Description of Figure Numbers:

[0018] Operating platform 1, guardrail 2, roller 3, mounting seat 31, rotating shaft 32, rotating wheel 33, mounting rod 5, upper rod body 51, lower rod body 52, front baffle 53, rear baffle 54, baffle ring 55, baffle edge 56, spring 57, crossbeam 58, roller 6, roller 61, wheel body 62. DETAILED DESCRIPTION

[0019] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] It will be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections.

[0021] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0022] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0023] In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of various components of the present invention are not absolute but relative. These descriptions are applicable when these components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components are changed, these directional indications will also change accordingly.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0026] See also Figure 1 , and combined with Figure 2 and Figure 3 As shown, the utility model is a movable trolley suitable for high and low beams 58, including an operating platform 1, and guardrails 2 are arranged around the operating platform 1 to ensure the safety of the operator when working on the operating platform 1.

[0027] A roller 3 is fixed to the bottom of one side of the operating table 1 of the present invention, and a mounting beam is installed on the upper part of the operating table 1 on the side opposite to the roller 3. A retractable mounting rod 5 is provided on the mounting beam, and a roller 6 is installed on the mounting rod 5.

[0028] During use, the height difference between the lower flanges of the large and small beams 58 is measured in advance, the mounting rods 5 on the rollers 3 are adjusted to the appropriate length, and the bridge deck is hoisted from the rear-mounted deck to the lower flange of the beam 58 using on-site lifting equipment. On-site construction personnel can set up a ladder from the deck and safely descend to the mobile trolley. Construction can be carried out within the operating platform 1, and the movement of the rollers 3 and rollers 6 facilitates quick and easy relocation for construction.

[0029] After the lower construction operations such as the welding seam at the segment ring mouth, the patching section, and the installation of the stiffening connecting plate are completed, the crane lifts the trolley out of the beam 58 for recycling and continues the installation of the next segment.

[0030] The utility model adopts a steel box tied arch bridge constructed by a method with few supports. Since the arch rib supports interfere with the bridge decks on both sides, the bridge decks on both sides are installed laterally, which is convenient to install and does not require on-site laying. The construction is simple and a guardrail 2 is provided, which is highly safe when constructing on the operating platform 1.

[0031] The mounting rod 5 of the present invention includes an upper rod body 51, a lower rod body 52, a front baffle 53 and a rear baffle 54. The bottom of the upper rod body 51 is provided with a baffle ring 55, and the top of the lower rod body 52 is provided with a baffle edge 56. The upper rod body 51 is sleeved on the lower rod body 52, and a spring 57 is sleeved on the upper rod body 51. The two ends of the spring 57 are pressed between the baffle edge 56 and the baffle ring 55. The front baffle 53 and the rear baffle 54 are spaced apart and connected by a crossbeam 58. The lower rod body 52 is mounted on the crossbeam 58. The roller 3 is rotatably mounted between the front baffle 53 and the rear baffle 54. For the specific structure, please refer to Figure 3 and Figure 4 shown.

[0032] When in use, the height difference between the roller 3 and the roller 6 can be adjusted to an appropriate range in advance through the relative position of the upper rod body 51 and the mounting beam. After installation, when the height difference between the large beam 58 and the small beam 58 changes relative to the height difference, the buffering effect of the spring 57 can be used to improve the smoothness of its movement.

[0033] The roller 6 of the present invention includes a roller 61 and a wheel body 62 . The wheel body 62 is rotatably mounted on the roller 61 . The mounting beam is a truss structure mounted on the top of the operating platform 1 and is located on the operating platform 1 on the opposite side of the roller 3 .

[0034] The roller 3 of the present invention includes a mounting seat 31 , a rotating shaft 32 and a rotating wheel 33 . The rotating wheel 33 is mounted on the mounting seat 31 via the rotating shaft 32 . The mounting seat 31 is mounted at the bottom of the operating table 1 .

[0035] The utility model is a movable trolley suitable for high and low beams 58, which adopts rollers 6 and rollers 3 on the left and right sides respectively, and can move on the main beam and small beam respectively, forming a bottom support and top suspension structure, and constructing a stable operating platform 1 between the main beam and the small beam to facilitate construction. At the same time, a retractable mounting rod 5 is adopted to adapt to the main beam and small beam with different height differences, meet the construction needs of different height differences, and make it more convenient and quick to use.

[0036] Compared with the existing technology, the utility model is a movable trolley suitable for high and low beams 58, which improves construction safety and avoids safety accidents caused by structural instability of the operating platform due to the height difference of the beam 58; saves material costs, solid round steel is used at the three rollers and other main structural stress positions, and hollow round tubes are used for the remaining edge protections. The total weight of the trolley is about 0.9t; the trolley can be recycled and can be transferred to the next segment for use after the construction of the lower part of the ring mouth of the current segment is completed.

[0037] Finally, the method of this application is only a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this utility model should be included in the scope of protection of this utility model.

Claims

1. A movable trolley suitable for high and low beams, characterized in that: The utility model comprises an operating platform, which is surrounded by guardrails, a roller is fixed at the bottom of one side of the operating platform, and a mounting beam is installed on the upper part of the operating platform on the opposite side of the roller, a retractable mounting rod is provided on the mounting beam, and a roller is installed on the mounting rod.

2. A movable trolley suitable for high and low beams as claimed in claim 1, characterized in that: The mounting rod includes an upper rod body, a lower rod body, a front baffle and a rear baffle, a baffle ring is provided at the bottom of the upper rod body, a baffle edge is provided at the top of the lower rod body, the upper rod body is sleeved on the lower rod body, and a spring is sleeved on the upper rod body, the two ends of the spring are pressed between the baffle edge and the baffle ring, the front baffle and the rear baffle are spaced apart and connected by a crossbeam, the lower rod body is mounted on the crossbeam, and the roller is rotatably mounted between the front baffle and the rear baffle.

3. A movable trolley suitable for high and low beams as claimed in claim 2, characterized in that: The roller comprises a roller shaft and a wheel body, and the wheel body is rotatably mounted on the roller shaft.

4. A movable trolley suitable for high and low beams as claimed in claim 1, characterized in that: The mounting beam is installed on the top of the operating platform in a truss structure and is located on the operating platform on the opposite side of the roller.

5. A movable trolley suitable for high and low beams as claimed in claim 1, characterized in that: The roller comprises a mounting seat, a rotating shaft and a rotating wheel. The rotating wheel is mounted on the mounting seat via the rotating shaft, and the mounting seat is mounted on the bottom of the operating table.

Images