Adjustable front supporting leg mechanism of bridge erecting machine

Abstract

The utility model discloses an adjustable front support leg mechanism of a bridge girder erection machine, which comprises a front support leg part and a cross beam which are sequentially arranged from top to bottom, the front support leg part is of a length-adjustable retractable structure, the top of the front support leg part is hinged to the front part of the bottom surface of a main truss of the bridge girder erection machine, and the bottom of the front support leg part is fixedly connected with the top surface of the cross beam. And the top surface of the cross beam is detachably connected with a permanent suspender of the suspension bridge through a pin shaft. The problem that an existing front supporting leg supporting structure of the bridge girder erection machine cannot provide good supporting for the front end of a main truss when a suspension bridge is erected is solved.

Description

Technical Field

[0001] The utility model relates to the field of bridge erection machine support structures, in particular to an adjustable front leg mechanism of a bridge erection machine. Background Art

[0002] In the existing bridge construction process, a bridge erection machine is usually used to build the bridge. The bridge erection machine has a simple structure and is easy to use. It is usually composed of a main truss, front legs, middle legs, rear legs and a lifting mechanism. The front legs, middle legs and rear legs are respectively arranged at the front, middle and rear of the bottom surface of the main truss.

[0003] The front support leg is fixedly hinged at the front end of the main truss. When working, it moves with the main truss and meets the functional requirements of the working conditions. In the prior art, when an ordinary bridge is erected, the front support leg moves forward to a predetermined position with the main truss, and the bottom is connected to the pier to play a supporting role. However, a suspension bridge has no piers when it is erected. Therefore, it is necessary to improve the front support mechanism of the existing bridge erection machine to adapt to the erection of the suspension bridge, so that it can share the weight of the bridge erection machine with the middle support leg when the steel truss beam section is installed. Utility Model Content

[0004] The utility model aims to provide an adjustable front outrigger mechanism for a bridge erecting machine, so as to solve the problem that the front outrigger support structure of the existing bridge erecting machine cannot provide good support for the front end of the main truss when erecting a suspension bridge.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An adjustable front support leg mechanism for a bridge erecting machine comprises a front support leg portion and a cross beam which are arranged in sequence from top to bottom, wherein the front support leg portion is a retractable structure with adjustable length, the top of the front support leg portion is hinged to the front portion of the bottom surface of a main truss of the bridge erecting machine, and the bottom of the front support leg portion is fixedly connected to the top surface of the cross beam, and the top surface of the cross beam is also detachably connected to the permanent hanger of a suspension bridge via a pin shaft.

[0007] A crossbeam is arranged between the front supporting legs, and the top surface of the crossbeam can be detachably connected to the permanent hanger of the suspension bridge through a pin shaft, so that the permanent hanger of the suspension bridge is utilized and becomes the front fulcrum support. When the bridge erection machine is erecting the beam, this structure and the middle supporting leg supporting mechanism together constitute a simply supported system, which can jointly bear the weight of the bridge erection machine when erecting the beam, thereby increasing the lifting capacity. Since the length of the permanent hanger of the suspension bridge is inconsistent, the height of the crossbeam needs to be adjusted, and the adjustment of the height of the crossbeam is achieved by adjusting the length of the front supporting leg, which has good adaptability.

[0008] As a further preferred embodiment of the utility model, the front support leg portion includes a sliding upper frame and a fixed lower frame which are arranged in sequence from top to bottom, a hydraulic cylinder is provided at the lower part of the sliding upper frame, and a pressure bearing mechanism is provided at the lower part of the fixed lower frame, a hydraulic rod of the hydraulic cylinder is arranged vertically downward, and the bottom of the hydraulic rod of the hydraulic cylinder is connected to the center of the top of the pressure bearing mechanism.

[0009] The extension and retraction of the front outrigger can be controlled conveniently and quickly through the hydraulic cylinder.

[0010] As a further preferred embodiment of the utility model, the sliding upper frame is composed of vertically arranged sleeved circular tubular columns and steel members, the steel members are arranged between the sleeved circular tubular columns, the hydraulic cylinder is arranged at the center position of the bottom of the structure formed by the steel members, and the fixed lower frame is composed of plug-in circular tubular columns, the pressure bearing mechanism is arranged between the plug-in circular tubular columns, and the upper part of the plug-in circular tubular columns is plugged into the lower part of the sleeved circular tubular columns.

[0011] Such a telescopic support structure is simple and has good stability.

[0012] As a further preferred embodiment of the utility model, a diagonal brace is further provided at the lower part of the front end of the sleeved circular tube column, and the diagonal brace is arranged to be inclined forward and upward, and the top of the diagonal brace is hinged to the bottom surface of the main truss of the bridge erecting machine.

[0013] It can better support the main truss.

[0014] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0015] 1. A crossbeam is arranged between the front outriggers, and the top surface of the crossbeam can be detachably connected to the permanent hanger of the suspension bridge through a pin shaft, so that the permanent hanger of the suspension bridge is utilized to make it a front fulcrum support. When the bridge erection machine is erecting the beam, the structure and the middle outrigger support mechanism together constitute a simply supported system, which can jointly bear the weight of the bridge erection machine when erecting the beam, thereby increasing the lifting capacity. Since the length of the permanent hanger of the suspension bridge is inconsistent, the height of the crossbeam needs to be adjusted, and the adjustment of the height of the crossbeam is achieved by adjusting the length of the front outrigger, which has good adaptability.

[0016] 2. The extension and retraction of the front outrigger can be controlled conveniently and quickly through the hydraulic cylinder.

[0017] 3. The telescopic support structure is simple and has good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 for Figure 1 Side view of. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific embodiment 1:

[0027] Figure 1 , Figure 2 An adjustable front outrigger mechanism of a bridge erecting machine is shown, comprising a front outrigger portion 1 and a cross beam 2 which are arranged in sequence from top to bottom, wherein the front outrigger portion 1 is a retractable structure with adjustable length, the top of the front outrigger portion 1 is hinged to the front portion of the bottom surface of a main truss of the bridge erecting machine, and the bottom of the front outrigger portion 1 is fixedly connected to the top surface of the cross beam 2, and the top surface of the cross beam 2 is also detachably connected to a permanent hanger 3 of a suspension bridge via a pin shaft.

[0028] A crossbeam is arranged between the front supporting legs, and the top surface of the crossbeam can be detachably connected to the permanent hanger of the suspension bridge through a pin shaft, so that the permanent hanger of the suspension bridge is utilized and becomes the front fulcrum support. When the bridge erection machine is erecting the beam, this structure and the middle supporting leg supporting mechanism together constitute a simply supported system, which can jointly bear the weight of the bridge erection machine when erecting the beam, thereby increasing the lifting capacity. Since the length of the permanent hanger of the suspension bridge is inconsistent, the height of the crossbeam needs to be adjusted, and the adjustment of the height of the crossbeam is achieved by adjusting the length of the front supporting leg, which has good adaptability. Specific embodiment 2:

[0030] This embodiment further explains the front support leg 1 on the basis of the specific embodiment 1. The front support leg 1 includes a sliding upper frame 11 and a fixed lower frame 12 which are arranged in sequence from top to bottom. A hydraulic cylinder 4 is provided at the lower part of the sliding upper frame 11, and a pressure receiving mechanism 5 is provided at the lower part of the fixed lower frame 12. The hydraulic rod of the hydraulic cylinder 4 is arranged vertically downward, and the bottom of the hydraulic rod of the hydraulic cylinder 4 is connected to the center of the top of the pressure receiving mechanism 5.

[0031] The extension and retraction of the front outrigger can be controlled conveniently and quickly through the hydraulic cylinder. Specific embodiment 3:

[0033] This embodiment further explains the sliding upper frame 11 on the basis of the specific embodiment 2. The sliding upper frame 11 is composed of vertically arranged sleeved circular tubular columns 111 and steel structure members 112. The steel structure members 112 are arranged between the sleeved circular tubular columns 111. The hydraulic cylinder 4 is arranged at the center position of the bottom of the structure formed by the steel structure members 112. The fixed lower frame 12 is composed of plug-in circular tubular columns. The pressure bearing mechanism 5 is arranged between the plug-in circular tubular columns. The upper part of the plug-in circular tubular columns is plugged into the lower part of the sleeved circular tubular columns 111.

[0034] Such a telescopic support structure is simple and has good stability. Specific embodiment 4:

[0036] This embodiment further illustrates the sleeved circular tube column 111 on the basis of the specific embodiment 3. The lower part of the front end of the sleeved circular tube column 111 is also provided with a diagonal brace 6. The diagonal brace 6 is arranged to be inclined forward and upward, and the top of the diagonal brace 6 is hinged to the bottom surface of the main truss of the bridge erecting machine.

[0037] It can better support the main truss.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bridge erecting machine with adjustable front outrigger mechanism, characterized in that: The invention comprises a front leg portion (1) and a cross beam (2) which are arranged in sequence from top to bottom. The front leg portion (1) is a retractable structure with adjustable length. The top of the front leg portion (1) is hinged to the front part of the bottom surface of the main truss of the bridge erecting machine, and the bottom of the front leg portion (1) is fixedly connected to the top surface of the cross beam (2). The top surface of the cross beam (2) is also detachably connected to the permanent hanger (3) of the suspension bridge via a pin shaft.

2. The adjustable front outrigger mechanism of the bridge erecting machine according to claim 1 is characterized in that: The front support leg (1) comprises a sliding upper frame (11) and a fixed lower frame (12) which are arranged in sequence from top to bottom, the lower portion of the sliding upper frame (11) is provided with a hydraulic cylinder (4), the lower portion of the fixed lower frame (12) is provided with a pressure receiving mechanism (5), the hydraulic rod of the hydraulic cylinder (4) is arranged vertically downward, and the bottom of the hydraulic rod of the hydraulic cylinder (4) is connected to the center of the top of the pressure receiving mechanism (5).

3. The adjustable front outrigger mechanism of the bridge erecting machine according to claim 2 is characterized in that: The sliding upper frame (11) is composed of vertically arranged sleeved circular tubular columns (111) and steel members (112); the steel members (112) are arranged between the sleeved circular tubular columns (111); the hydraulic cylinder (4) is arranged at the center of the bottom of the structure formed by the steel members (112); the fixed lower frame (12) is composed of plug-in circular tubular columns; the pressure bearing mechanism (5) is arranged between the plug-in circular tubular columns; the upper part of the plug-in circular tubular column is plugged into the lower part of the sleeved circular tubular column (111).

4. The adjustable front outrigger mechanism of the bridge erecting machine according to claim 3 is characterized in that: A diagonal brace (6) is also provided at the lower part of the front end of the sleeved circular tube column (111), and the diagonal brace (6) is arranged to tilt forward and upward, and the top of the diagonal brace (6) is hinged to the bottom surface of the main truss of the bridge erecting machine.

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