Connecting device for triangular truss of bridge girder erection machine

Abstract

The utility model discloses a connecting device for a triangular truss of a bridge girder erection machine, which comprises end plates and nut connecting base plates, the end plates are arranged on the end faces of an upper chord and a lower chord of the truss, and the nut connecting base plates are arranged on the side walls of the upper chord and the lower chord of the truss. The nut connecting base plates are arranged in the direction perpendicular to the side walls of the upper chord and the lower chord of the truss, the nut connecting base plates are arranged close to the end plates, and every two adjacent main truss sections are detachably connected through screws arranged in the middles of the nut connecting base plates and nuts at the two ends of the screws. The problem that the connection stability of the connection positions of truss sections of an existing bridge girder erection machine is not high enough is solved.

Description

Technical Field

[0001] The utility model relates to the field of truss structures of bridge erecting machines, in particular to a connecting device for the triangular truss of a bridge erecting machine. Background Technique

[0002] During the existing bridge construction process, a bridge erecting machine is usually used to build a bridge. The bridge erecting machine has a simple structure and is convenient to use. It is usually composed of a main truss, front outriggers, middle outriggers, rear outriggers and a hoisting mechanism. The front outriggers, middle outriggers and rear outriggers are respectively arranged at the front, middle and rear parts of the bottom surface of the main truss.

[0003] The existing main trusses are generally of an integrally formed structure. The advantage of this is that the structure is stable, but the defects are also obvious. Because the longer the length, the higher the production process requirements, and it is very inconvenient to transport an overly long length. Therefore, in the prior art, the integrally formed truss is selected to be changed to a spliced truss composed of truss segments. The defect of the existing spliced truss is that the overall structure is not as stable as the integrally formed one, and the connection stability at the splicing part needs to be improved. Moreover, when designing the connection structure at the splicing part, the problem of the trolley running on the top of the truss also needs to be considered. Therefore, this application has carried out relevant optimization and improvement on the existing connection structure at the splicing part. Content of the Utility Model

[0004] The purpose of the utility model is to provide a connecting device for the triangular truss of a bridge erecting machine, so as to solve the problem that the connection stability at the joint of the truss segments of the existing bridge erecting machine is not high enough.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A connecting device for the triangular truss of a bridge erecting machine includes an end plate and a nut connecting backing plate. The end plate is arranged at the end faces of the upper chord and the lower chord of the truss, and the nut connecting backing plate is arranged on the side walls of the upper chord and the lower chord of the truss. The direction of the nut connecting backing plate is perpendicular to the side walls of the upper chord and the lower chord of the truss, and the position of the nut connecting backing plate is close to the end plate. Adjacent two main truss segments are detachably connected by a screw arranged in the middle of the nut connecting backing plate and nuts at both ends of the screw.

[0007] Since an end plate is arranged at the end faces of the upper chord and the lower chord of the truss, the flatness of the contact surface between the two main truss segments is high. Then, a nut backing plate is arranged on the side walls of the upper chord and the lower chord of the truss. The two adjacent main truss segments can be tightly connected by a screw arranged in the middle of the nut connecting backing plate and nuts at both ends of the screw. After the nuts are tightened, the flat fit between the end plates can make the connection structure more stable.

[0008] As a further preference of the present utility model, the top surface of the end plate located on the upper chord is flush with the top surface of the upper chord.

[0009] In this way, it will not affect the operation of the overhead crane on the upper chord.

[0010] As a further preference of the present utility model, the number of screws connected to each nut connection backing plate is not less than three from top to bottom.

[0011] Such a tensioning structure has high stability.

[0012] As a further preference of the present utility model, a stiffening plate perpendicular to the nut backing plate is further provided inside the nut backing plate, and the other end of the stiffening plate is connected to the end head plate.

[0013] Since the nut backing plate will be subjected to a large tensile force, a stiffening plate is provided to strengthen its supporting force.

[0014] As a further preference of the present utility model, the number of stiffening plates connected to each nut connection backing plate is not less than two from top to bottom.

[0015] Higher strength.

[0016] As a further preference of the present utility model, a water baffle is further provided around the outer edge of the nut connection backing plate to surround the nut backing plate.

[0017] It can block water and prevent water from contacting the nut, so it is not easy to rust, and it is easier to disassemble.

[0018] Compared with the prior art, the present utility model can achieve at least one of the following beneficial effects:

[0019] 1. Since end plates are provided at the end faces of the upper chord and the lower chord of the truss, the flatness of the contact surface between two main truss segments is high. Then, nut backing plates are provided on the side walls of the upper chord and the lower chord of the truss. The two adjacent main truss segments can be tightly connected by the screw provided in the middle of the nut connection backing plate and the nuts at both ends of the screw. After the nuts are tightened, the flat fit between the end plates can make the connection structure more stable.

[0020] 2. It will not affect the operation of the overhead crane on the upper chord.

[0021] 3. The tensioning structure has high stability.

[0022] 4. Since the nut backing plate will be subjected to a large tensile force, a stiffening plate is provided to strengthen its supporting force.

[0023] 5. It can block water and prevent water from contacting the nut, so it is not easy to rust, and it is easier to disassemble. Description of the Drawings

[0024] Figure 1 It is a structural schematic diagram after the splicing of the main truss.

[0025] Figure 2 is Figure 1 An enlarged view of location A. Specific implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0028] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0029] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present utility model is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. 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 thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Specific Embodiment 1:

[0033] Figure 1 、 Figure 2 A connecting device for the triangular truss of a bridge erecting machine is shown, including an end plate 1 and a nut connecting backing plate 2. The end plate 1 is arranged at the end faces of the upper chord and the lower chord of the truss, and the nut connecting backing plate 2 is arranged on the side walls of the upper chord and the lower chord of the truss. The direction of the nut connecting backing plate 2 is perpendicular to the side walls of the upper chord and the lower chord of the truss, and the position of the nut connecting backing plate 2 is close to the end plate 1. Adjacent two main truss segments are detachably connected by a screw rod 3 arranged in the middle of the nut connecting backing plate 2 and nuts 4 at both ends of the screw rod 3.

[0034] Since the end plate is arranged at the end faces of the upper chord and the lower chord of the truss, the flatness of the contact surface between the two main truss segments is high. Then, the nut backing plate is arranged on the side walls of the upper chord and the lower chord of the truss. The two adjacent main truss segments can be tightly connected by the screw rod arranged in the middle of the nut connecting backing plate and the nuts at both ends of the screw rod. After the nuts are tightened, the flat fit between the end plates can make the connection structure more stable. Specific Embodiment 2:

[0036] This embodiment further describes the end plate 1 on the basis of Specific Embodiment 1. The top surface of the end plate 1 located on the upper chord is flush with the top surface of the upper chord.

[0037] This will not affect the operation of the overhead crane on the upper chord. Specific Embodiment 3:

[0039] This embodiment further describes the nut connecting backing plate 2 on the basis of Specific Embodiment 1. The number of screw rods 3 connected to each nut connecting backing plate 2 is not less than three from top to bottom.

[0040] Such a tightening structure has high stability. Specific Embodiment 4:

[0042] This embodiment further explains the nut connecting backing plate 2 on the basis of the specific embodiment 1. A stiffening plate 5 perpendicular to the nut backing plate 2 is further provided inside the nut backing plate 2, and the other end of the stiffening plate 5 is connected to the end plate 1.

[0043] Since the nut backing plate will be subjected to a large tensile force, a stiffening plate is provided to strengthen its supporting force. Specific embodiment 5:

[0045] This embodiment further explains the nut connecting backing plate 2 on the basis of the specific embodiment 4. The number of clamping plates 5 connected to each nut connecting backing plate 2 is not less than two from top to bottom.

[0046] Higher strength. Specific embodiment 6:

[0048] This embodiment further explains the nut connecting backing plate 2 on the basis of the specific embodiment 4. A water baffle 6 is further provided around the edge of the nut backing plate 2 on the outside of the nut connecting backing plate 2.

[0049] It can block water and prevent water from contacting the nut, so it is not easy to rust, and it is easier to disassemble.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A connecting device for a triangular truss of a bridge erecting machine, characterized in that: The invention comprises an end plate (1) and a nut connection pad (2), wherein the end plate (1) is arranged at the end surfaces of the upper chord and the lower chord of the truss, and the nut connection pad (2) is arranged on the side walls of the upper chord and the lower chord of the truss. The nut connection pad (2) is arranged in a direction perpendicular to the side walls of the upper chord and the lower chord of the truss. The nut connection pad (2) is arranged at a position close to the end plate (1), and two adjacent main truss segments are detachably connected via a screw rod (3) arranged in the middle of the nut connection pad (2) and nuts (4) at both ends of the screw rod (3).

2. The connecting device for the triangular truss of a bridge erecting machine according to claim 1, characterized in that: The top surface of the end plate (1) located on the upper chord is flush with the top surface of the upper chord.

3. The connecting device for the triangular truss of a bridge erecting machine according to claim 1, characterized in that: Each nut connection pad (2) is connected to at least three screw rods (3) from top to bottom.

4. The connecting device for the triangular truss of a bridge erecting machine according to claim 1, characterized in that: A stiffening plate (5) is also provided on the inner side of the nut connection pad (2) and is arranged perpendicular to the nut connection pad (2), and the other end of the stiffening plate (5) is connected to the end plate (1).

5. The connecting device for the triangular truss of a bridge erecting machine according to claim 4, characterized in that: Each nut connection pad (2) is connected to at least two stiffening plates (5) from top to bottom.

6. The connecting device for the triangular truss of a bridge erecting machine according to claim 1, characterized in that: A circle of water retaining plate (6) is also provided on the outer side of the nut connection pad (2) and around the edge of the nut connection pad (2).

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