A replacement mechanism for a supporting wheel in a bridge machine with height limitation

Abstract

The application relates to the technical field of bridge erecting machines, and discloses a middle supporting wheel replacement mechanism suitable for a height-limited bridge erecting machine, which comprises a transversely arranged middle supporting beam, two lower wheel boxes are symmetrically and fixedly installed on the two sides of the middle supporting beam, weighing seats are symmetrically and longitudinally installed on the two sides of the lower wheel boxes, the bottom of each weighing seat is connected with the middle supporting beam, and upper wheel boxes are symmetrically installed at the ends away from the middle supporting beam. Thus, the overall installation height is reduced, the mechanism is more suitable for supporting use in a construction site with height limitation and small clearance, normal beam plate installation work of the bridge erecting machine in a low-altitude environment is ensured, and the applicability is improved; the weighing seat is arranged in two layers, the upper layer is a first installation base, the lower layer is a second installation base, the second installation base adopts an inverted isosceles trapezoidal block structure, and therefore the supporting strength of the weighing seat is improved, and the safety and stability during use are further improved.

Description

Technical Field

[0001] This application relates to the field of bridge erecting machine technology, and in particular to a roller replacement mechanism for bridge erecting machines with height restrictions. Background Technology

[0002] A bridge erecting machine is generally composed of a main beam, a front upper crossbeam, a rear upper crossbeam, a front auxiliary support leg, a front support leg, a rear support leg, a middle support roller, a lifting trolley and hydraulic system, electrical and control systems (the transverse track and beam transport vehicle are components other than the bridge erecting machine).

[0003] The central support roller, also called the central outrigger, supports the main structure of the bridge erecting machine and enables it to perform longitudinal, lateral, and longitudinal movements. It is one of the most important load-bearing structures and operating mechanisms of the bridge erecting machine. In existing technology, the central support roller generally consists of an upper suspension wheel box, a central support telescopic cylinder, jacks, a central support crossbeam, and a lower wheel box (as shown in the attached diagram). Figure 1 As shown in the figure, when the bridge erecting machine is installing beams and slabs in a construction site with height restrictions and small clearance, even if the telescopic cylinder of the middle support roller is adjusted to the lowest position, it is still not suitable for working in such a small construction site. Therefore, it is necessary to propose a replacement mechanism for the middle support roller of the bridge erecting machine that is suitable for height restrictions to solve the above problems. Utility Model Content

[0004] To address the issue that the existing bridge erecting machine's center support roller typically consists of an upper suspension wheel box, a center support telescopic cylinder, jacks, a center support crossbeam, and a lower wheel box (as shown in the attached diagram), Figure 1 As shown in the figure, when the bridge erecting machine is installing beams and slabs in a construction site with height restrictions and small clearance, even if the telescopic cylinder of the middle support roller is adjusted to the lowest position, it is still not suitable for working in such a small construction site. This application provides a middle support roller replacement mechanism for bridge erecting machines with height restrictions.

[0005] The technical solution provided in this application for a roller replacement mechanism suitable for bridge erecting machines with height restrictions is as follows:

[0006] A replacement mechanism for the middle support roller of a bridge erecting machine with height restrictions includes a transversely arranged middle support beam. Lower wheel boxes are symmetrically fixedly installed on both sides of the middle support beam, and weighing seats are symmetrically and longitudinally installed on both sides of the lower wheel boxes. The bottom of the weighing seats is connected to the middle support beam, and an upper wheel box is symmetrically installed at the end away from the middle support beam.

[0007] Preferably, the weighing base comprises a first mounting base disposed on the lower layer and connected to the middle support beam, and a second mounting base disposed above the first mounting base.

[0008] Preferably, the second mounting base adopts an inverted isosceles trapezoidal block structure.

[0009] Preferably, the upper wheel box is installed at both ends of the second mounting base.

[0010] Preferably, a storage box is provided at the middle position between the lower wheel boxes.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This replacement mechanism for the support rollers of bridge erecting machines with height restrictions replaces the telescopic cylinder structure of the support rollers in existing technologies by setting up a weighing seat. This reduces the overall installation height and makes it more suitable for use in construction sites with height restrictions and small clearances. It ensures that the bridge erecting machine can carry out beam and slab installation work normally in low-altitude environments, thus improving its applicability. By setting the weighing seat in two layers, with the upper layer being the first mounting base and the lower layer being the second mounting base, the second mounting base adopts an inverted isosceles trapezoidal block structure, thereby improving the overall support strength of the weighing seat and further enhancing the safety and stability of use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a support roller in the prior art;

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0015] Explanation of reference numerals in the attached diagram: 1. Middle support beam; 2. Lower wheel box; 3. Storage box; 4. Upper wheel box; 5. First mounting base; 6. Second mounting base. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1 to 2 This utility model provides a technical solution:

[0018] A replacement mechanism for the middle support roller of a bridge erecting machine with height restrictions includes a transversely arranged middle support beam 1, with lower wheel boxes 2 symmetrically fixedly installed on both sides of the middle support beam 1, and weighing seats symmetrically and longitudinally installed on both sides of the lower wheel boxes 2. The bottom of the weighing seats is connected to the middle support beam 1, and an upper wheel box 4 is symmetrically installed at the end away from the middle support beam 1.

[0019] The weighing base consists of a first mounting base 5 connected to the middle support beam 1 on the lower layer and a second mounting base 6 located above the first mounting base 5.

[0020] The second mounting base 6 adopts an inverted isosceles trapezoidal block structure.

[0021] The upper wheel box 4 is installed at both ends of the second mounting base 6.

[0022] This replacement mechanism for the support rollers of bridge erecting machines with height restrictions replaces the telescopic cylinder structure of the support rollers in existing technologies by setting up a weighing seat. This reduces the overall installation height and makes it more suitable for use in construction sites with height restrictions and small clearances. It ensures that the bridge erecting machine can carry out beam and slab installation work normally in low-altitude environments, thus improving its applicability. By setting the weighing seat in two layers, with the upper layer being the first mounting base 5 and the lower layer being the second mounting base 6, and the second mounting base 6 adopting an inverted isosceles trapezoidal block structure, the overall support strength of the weighing seat is improved, further enhancing the safety and stability of use.

[0023] A storage box 3 is located in the middle between the lower wheel boxes 2, which is convenient for storing tools.

[0024] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0025] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A roller replacement mechanism for a bridge erecting machine with height restrictions, characterized in that: It includes a horizontally arranged central support beam (1), on which lower wheel boxes (2) are symmetrically fixed on both sides, and weighing seats (3) are symmetrically installed longitudinally on both sides of the lower wheel boxes (2). The bottom of the weighing seats (3) is connected to the central support beam (1), and an upper wheel box (4) is symmetrically installed at the end away from the central support beam (1).

2. The roller replacement mechanism for a bridge erecting machine with height restrictions according to claim 1, characterized in that: The weighing base (3) consists of a first mounting base (5) connected to the middle support beam (1) on the lower layer and a second mounting base (6) located above the first mounting base (5).

3. The roller replacement mechanism for a bridge erecting machine with height restrictions according to claim 2, characterized in that: The second mounting base (6) adopts an inverted isosceles trapezoidal block structure.

4. The roller replacement mechanism for a bridge erecting machine with height restrictions according to claim 3, characterized in that: The upper wheel box (4) is installed at both ends of the second mounting base (6).

5. A roller replacement mechanism for a bridge erecting machine with height restrictions according to claim 4, characterized in that: A storage box (8) is provided in the middle position between the lower wheel boxes (2).

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