Automatic supporting leg rotating device in bridge erecting machine
The automatic rotation mechanism for arch bridge machines addresses inefficiencies and safety issues by enabling rapid and stable rotation of the middle leg, ensuring efficient passage through narrow spaces.
Patent Information
- Application Number
- CN202422363315.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When the legs in the existing bridge erected machines pass through narrow spaces such as tunnels, the operating time is long and there are safety hazards, and the existing solutions are inefficient.
An automatic rotation device of the leg in the bridge buckle is designed, including a rotating frame, a rotating oil cylinder and a stop block. By rotating the cylinder perpendicular to the middle leg, the stop block is limited to the position after the middle leg is rotated in place.
The rapid and stable rotation of the middle leg is achieved, ensuring the stability of the bridge rig through the narrow space, improving operating efficiency and reducing safety risks.
Smart Images
Figure CN223103504U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bridge erecting machines, and particularly relates to an automatic rotation device for the middle leg of a bridge erecting machine. Background Art
[0002] Most of the high-speed railways in our country are based on bridges, and high-speed railways are laid on elevated bridges. When building elevated bridges, a bridge erecting machine is generally used. A bridge erecting machine is a device for placing precast beam slabs on precast bridge piers.
[0003] In the prior art, the width of the middle leg of the bridge erecting machine is greater than the width of the elevated bridge to be erected. When the elevated bridge needs to pass through narrow spaces such as tunnels, it is not convenient to pass through due to the large width of the middle leg of the bridge erecting machine; the existing solution is to rotate the middle leg of the bridge erecting machine relative to the main beam by a certain angle so that the dimension of the middle leg in the width direction is reduced, thereby facilitating the bridge erecting machine to pass through narrow spaces such as tunnels; during the rotation of the middle leg, generally a hoist is used to pull the middle leg to rotate; this method has a long operation time, low efficiency, and there are certain safety hazards.
[0004] Therefore, it is necessary to provide an improved technical solution for the above-mentioned deficiencies in the prior art. Summary of the Utility Model
[0005] The purpose of the utility model is to provide an automatic rotation device for the middle leg of a bridge erecting machine to at least solve the above problems existing in the prior art.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] An automatic rotation device for the middle leg of a bridge erecting machine, the rotation device includes:
[0008] A rotating frame, one end of the rotating frame is fixed on the main beam column, and the middle leg is rotatably arranged around the main beam column;
[0009] A rotating oil cylinder, one end of the rotating oil cylinder is hinged on the middle leg, and the other end is hinged on the rotating frame. When the middle leg is perpendicular to the main beam, the rotating oil cylinder is perpendicular to the middle leg;
[0010] A stop block, one end of the stop block is rotatably arranged on the rotating frame, and the other end of the stop block extends downward out of the rotating frame. The stop block is used to limit the middle leg after the middle leg rotates in place.
[0011] For the automatic rotation device for the middle leg of a bridge erecting machine as described above, preferably, the rotating frame is an L-shaped frame, and the L-shaped frame includes a cross beam and a longitudinal beam, and the cross beam and the longitudinal beam are perpendicular to each other.
[0012] In the automatic rotation device of the middle support leg of the bridge erecting machine as described above, preferably, an arc portion is provided at one end of the longitudinal beam away from the cross beam, and the arc portion is fixed on the main beam column.
[0013] In the automatic rotation device of the middle support leg of the bridge erecting machine as described above, preferably, one end of the rotating oil cylinder is hinged to the end of the cross beam. When the middle support leg is perpendicular to the main beam, the cross beam is parallel to the middle support leg, and at this time, the rotating oil cylinder is perpendicular to the cross beam.
[0014] In the automatic rotation device of the middle support leg of the bridge erecting machine as described above, preferably, a plurality of through holes are provided at one end of the cross beam away from the rotating oil cylinder.
[0015] In the automatic rotation device of the middle support leg of the bridge erecting machine as described above, preferably, the stop block includes a rotating shaft and a stop block, and the rotating shaft is rotatably arranged in a through hole of the cross beam.
[0016] In the automatic rotation device of the middle support leg of the bridge erecting machine as described above, preferably, the cross section of the stop block is triangular.
[0017] Beneficial effects:
[0018] In this rotation device, when the bridge erecting machine needs to pass through a narrow space such as a tunnel, control the rotating oil cylinder to extend. Since when the middle support leg is perpendicular to the main beam, the rotating oil cylinder and the middle support leg in the initial state are perpendicular to each other, when the rotating oil cylinder needs to push the middle support leg to rotate, it is ensured that the rotating oil cylinder can apply the maximum possible torque to the middle support leg, thereby making it more convenient for the rotating oil cylinder to push the middle support leg to rotate.
[0019] At the same time, a stop block is arranged on the rotating frame. After the middle support leg rotates in place, the stop block can limit the continuous rotation of the middle support leg, so that the middle support leg and the main beam are always kept at a set angle, thereby facilitating the stability of the bridge erecting machine and being beneficial to the stable passage of the bridge erecting machine through the narrow space.
[0020] The stop block with a triangular cross section can rotate around the rotating shaft, so that one surface of the triangular stop block fits on the middle support leg, making it more convenient to always maintain a stable angle after the middle support leg rotates in place and facilitating the stable passage of the bridge erecting machine through the narrow space. Description of the drawings
[0021] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:
[0022] Figure 1 It is the structure diagram of the rotation device in the initial state of the bridge erecting machine according to an embodiment of the present invention;
[0023] Figure 2Structural diagram of the rotating device after the middle support leg rotates relative to the main beam in an embodiment of the present utility model;
[0024] Figure 3 Front view of the rotating device in an embodiment of the present utility model.
[0025] In the figure: 1, main beam; 2, middle support leg; 3, main beam column; 4, rotating frame; 41, longitudinal beam; 42, cross beam; 5, rotating oil cylinder; 6, stop block; 61, rotating shaft; 62, stop block. Specific embodiments
[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model belong to the scope of protection of the present utility model.
[0027] In the description of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. The terms "connected" and "connected" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.
[0028] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.
[0029] According to a specific embodiment of the present utility model, as Figures 1 - 3 shown, the present utility model provides an automatic rotating device for the middle support leg of a bridge erecting machine. The rotating device includes:
[0030] A rotating frame 4, one end of the rotating frame 4 is fixed on the main beam column 3, and the middle support leg 2 is rotatably arranged around the main beam column 3.
[0031] A rotating oil cylinder 5, one end of the rotating oil cylinder 5 is hinged on the middle support leg 2, and the other end is hinged on the rotating frame 4. When the middle support leg 2 is perpendicular to the main beam 1, the rotating oil cylinder 5 is perpendicular to the middle support leg 2.
[0032] The stop block 6 has one end rotatably arranged on the rotating frame 4, and the other end of the stop block 6 extends downwardly out of the rotating frame 4. The stop block 6 is used to limit the middle support leg 2 after the middle support leg 2 rotates in place.
[0033] In this rotating device, when the bridge erecting machine needs to pass through narrow spaces such as tunnels, the rotating oil cylinder 5 is controlled to extend. Since the bridge erecting machine is in a normal working state when the middle support leg 2 is perpendicular to the main beam 1, at this time, the rotating oil cylinder 5 is perpendicular to the middle support leg 2. When the rotating oil cylinder 5 applies a force to the middle support leg 2, the direction of the force applied by the rotating oil cylinder 5 is the rotating direction of the middle support leg 2. At this time, the force directly applied by the rotating oil cylinder 5 on the middle support leg 2 is the largest, and there is no moment angle between the two, which is more conducive to the rotating oil cylinder 5 pushing the middle support leg 2 to rotate.
[0034] At the same time, a stop block 6 is arranged on the rotating frame 4. After the middle support leg 2 rotates in place, the stop block 6 can limit the continuous rotation of the middle support leg 2, so that the middle support leg 2 and the main beam 1 are always kept at a set angle, thus facilitating the guarantee of the stability of the bridge erecting machine and being conducive to the stable passage of the bridge erecting machine through narrow spaces.
[0035] In this embodiment, the rotation angle of the middle support leg 2 is more than 70 degrees, that is, the included angle between the middle support leg 2 and the main beam 1 is within 20 degrees, so as to ensure that the size of the bridge erecting machine in the width direction is sufficiently reduced, thus facilitating the passage of the bridge erecting machine through narrow spaces.
[0036] The rotating frame 4 is an L-shaped frame. The L-shaped frame includes a cross beam 42 and a longitudinal beam 41, and the cross beam 42 and the longitudinal beam 41 are perpendicular to each other. In an embodiment of the present application, the L-shaped frame structure can have a relatively large lateral length, and a suitable hinge point of the rotating oil cylinder 5 can be selected on the L-shaped frame so that the rotating oil cylinder 5 is perpendicular to the middle support leg 2 in the initial state.
[0037] In this embodiment, a reinforcing rib is arranged at the included angle part of the cross beam 42 and the longitudinal beam 41 for strengthening the structural strength of the L-shaped frame.
[0038] An arc portion is arranged at one end of the longitudinal beam 41 away from the cross beam 42, and the arc portion is fixed on the main beam column 3. In an embodiment of the present application, since the L-shaped frame serves as a reaction frame, when the rotating oil cylinder 5 works, the L-shaped frame needs to provide sufficient support; and one end of the longitudinal beam 41 is set as an arc portion, and the arc portion fits more closely to the main beam column 3, which can increase the connection area between the longitudinal beam 41 and the main beam column 3, thus ensuring the connection strength between the L-shaped frame and the main beam column 3.
[0039] One end of the rotating oil cylinder 5 is hinged to the end of the cross beam 42. When the middle leg 2 is perpendicular to the main beam 1, the cross beam 42 is parallel to the middle leg 2, and at this time, the rotating oil cylinder 5 is perpendicular to the cross beam 42. In an embodiment of the present application, in the working state of the bridge erecting machine, the cross beam 42 is parallel to the middle leg 2. By arranging the rotating oil cylinder 5 between two mutually parallel structures, the rotating oil cylinder 5 can be perpendicular to the middle leg 2 in the initial state. When the rotating oil cylinder 5 needs to push the middle leg 2 to rotate, it is ensured that the rotating oil cylinder 5 can apply the maximum possible torque to the middle leg 2, thereby making it more convenient for the rotating oil cylinder 5 to push the middle leg 2 to rotate.
[0040] A plurality of through holes are provided at one end of the cross beam 42 away from the rotating oil cylinder 5. The stop block 6 includes a rotating shaft 61 and a stop block 62, and the rotating shaft 61 is rotatably arranged in a through hole of the cross beam 42.
[0041] In an embodiment of the present application, the rotating shaft 61 in the stop block 6 is rotatably arranged in the cross beam 42, and the stop block 62 is located below the cross beam 42, which is convenient for the stop block 62 to limit the angle of the middle leg 2.
[0042] By selecting the fixed position of the stop block 6 in different through holes of the cross beam 42 to change the position of the stop block 6 on the cross beam 42, the stop block 6 can limit the position at different rotation angles of the middle leg 2, thereby improving the use diversity of the automatic rotation device.
[0043] The cross section of the stop block 62 is triangular. In an embodiment of the present application, when the middle leg 2 rotates into place, the middle leg 2 gradually fits on the stop block 62. The triangular cross-section stop block 62 can rotate around the rotating shaft 61, so that one surface of the triangular stop block 62 fits on the middle leg 2, which is more convenient for the middle leg 2 to always maintain a stable angle after rotating into place, and is convenient for the bridge erecting machine to pass through a narrow space stably.
[0044] It can be understood that the above description is only exemplary, and the embodiments of the present application do not limit this.
[0045] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model are within the scope of protection of the pending claims of the present utility model.
Claims
1. An automatic rotation device for the middle leg of a bridge erecting machine, characterized in that The rotation device includes: A rotating frame, one end of the rotating frame is fixed on the main beam column, and the middle leg is rotatably arranged around the main beam column; A rotating oil cylinder, one end of the rotating oil cylinder is hinged on the middle leg, and the other end is hinged on the rotating frame. When the middle leg is perpendicular to the main beam, the rotating oil cylinder is perpendicular to the middle leg; A stop block, one end of the stop block is rotatably arranged on the rotating frame, and the other end of the stop block extends downwardly out of the rotating frame. The stop block is used to limit the middle leg after the middle leg rotates in place.
2. The automatic rotation device of the middle leg of the bridge erecting machine according to claim 1, wherein, The rotating frame is an L-shaped frame, and the L-shaped frame includes a cross beam and a longitudinal beam, and the cross beam and the longitudinal beam are perpendicular to each other.
3. The automatic rotation device for the middle leg of the bridge erecting machine according to claim 2, characterized in that, An arc portion is provided at one end of the longitudinal beam away from the cross beam, and the arc portion is fixed on the main beam column.
4. The automatic rotation device for the middle leg of the bridge erecting machine according to claim 3, characterized in that, One end of the rotating oil cylinder is hinged to the end of the cross beam. When the middle leg is perpendicular to the main beam, the cross beam is parallel to the middle leg, and at this time the rotating oil cylinder is perpendicular to the cross beam.
5. The automatic rotation device for the middle support leg of the bridge erecting machine according to claim 4, characterized in that, A plurality of through holes are provided at one end of the cross beam away from the rotating oil cylinder.
6. The automatic rotation device for the middle support leg of the bridge erecting machine according to claim 5, characterized in that, The stop block includes a rotating shaft and a stop block, and the rotating shaft is rotatably arranged in a through hole of the cross beam.
7. The automatic rotation device for the middle leg of the bridge erection machine according to claim 6, characterized in that, The cross section of the stop block is triangular.