Steel box girder guiding device
By introducing height and angle adjustment components into the steel box girder jacking guide device, the problem that existing devices are difficult to adapt to steel box girders of different shapes is solved, and a more efficient guiding effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY BRIDGE BUREAU NO 7 ENG CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-08
AI Technical Summary
Existing guiding devices are difficult to adapt to steel box girders of different shapes, resulting in low guiding efficiency.
Two sets of identical and symmetrically arranged guide abutment devices are used, combined with height adjustment components and angle adjustment components. Driven by guide screws, hydraulic cylinders and motors, the height and angle of the guide ball can be flexibly adjusted to adapt to steel box girders of different shapes.
The adjustment range and flexibility of the guiding device have been improved, enabling it to better adapt to steel box girders of different shapes and improving guiding efficiency.
Smart Images
Figure CN224213149U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel box girder guiding devices, specifically to a steel box girder jacking guiding device. Background Technology
[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges, generally used on bridges with large spans. They are called steel box girders because their shape resembles a box. During installation, steel box girders are gradually moved forward on the supporting structure using a jacking device. To prevent incorrect movement, guide devices are installed on both sides of the moving direction to guide the steel box girder. Existing guide devices typically use horizontally movable guides, allowing for fine-tuning based on the width of the guide beam after installation. Another type of guide device allows the guide to move vertically relative to the height of the steel box girder, adjusting the angle at which the guide device contacts the steel box girder. This allows the guide to contact different positions within the steel box girder, resulting in smoother movement.
[0003] Although both of the above devices can guide steel box girders, in practical applications, they can only guide straight steel box girders. When the steel box girder is curved, the installers need to repeatedly adjust the installation position of the device before it can guide the curved girder. Furthermore, the device cannot guide straight steel box girders after the installation position is adjusted. Therefore, it is necessary to repeatedly disassemble and adjust the guiding device. The same set of guiding devices is difficult to adapt to steel box girders of different shapes, resulting in low guiding efficiency of the steel box girder. Utility Model Content
[0004] This application provides a steel box girder jacking guide device, which can solve the technical problem in the prior art that the same set of guide devices is difficult to adapt to steel box girders of different shapes, resulting in low guiding efficiency of steel box girders.
[0005] This application provides a steel box girder jacking guide device, which includes:
[0006] Two sets of identical and symmetrically arranged guide abutment devices form a guide space between the two sets of guide abutment devices for the movement of the steel box girder. Each set of guide abutment devices includes:
[0007] A fixed base, on which a support seat is slidably disposed along the length direction of the fixed base;
[0008] A first driving member is disposed on the fixed base and is used to drive the support to slide along the length direction of the fixed base;
[0009] A support arm, which is vertically mounted on the support base;
[0010] A rotating arm, which is rotatably mounted at the end of the support arm away from the support base;
[0011] Mounting frame, the mounting frame is rotatably mounted at one end of the rotating arm away from the support arm, and the mounting frame is provided with guide balls for abutting against the steel box girder;
[0012] A height adjustment assembly is mounted on the support base and is used to control the rotation of the swing arm along the height direction of the steel box girder;
[0013] And an angle adjustment component, which is disposed on the rotating arm and used to control the movement of the mounting frame along the length of the steel box girder.
[0014] In one embodiment, a guide groove is provided on the fixed base along the length direction of the fixed base, and a guide screw is rotatably disposed in the guide groove along the length direction of the fixed base;
[0015] The support base is provided with a guide portion, and the guide portion has a threaded channel that is threadedly engaged with the guide screw. The guide portion extends into the guide groove, and the guide screw is threadedly connected to the threaded channel.
[0016] In one embodiment, the first driving member is configured as a first reciprocating rotary motor, and the output shaft of the first reciprocating rotary motor is coaxially connected to the guide screw.
[0017] In one embodiment, the height adjustment assembly includes a first hydraulic cylinder, which is disposed on the support base, and the output end of the first hydraulic cylinder is rotatably connected to the rotating arm.
[0018] In one embodiment, the angle adjustment member includes a driving wheel, a driven wheel, and a second driving member;
[0019] The drive wheel is rotatably mounted on the rotating arm, and the driven wheel's central shaft extends to be fixedly connected to the mounting bracket. The length direction of the driven wheel's central shaft is parallel to the height direction of the steel box girder. The drive wheel and the driven wheel mesh with each other, and the second driving member is used to drive the drive wheel to rotate.
[0020] In one embodiment, the second drive member includes a second reciprocating rotary motor disposed on the rotating arm, and the output shaft of the second reciprocating rotary motor is coaxially connected to the drive wheel.
[0021] In one embodiment, a groove is provided at the end of the rotating arm away from the support arm, and a connecting plate is provided on the mounting bracket. The end of the connecting plate away from the guide ball extends into the groove of the rotating arm, and the central shaft of the driven wheel passes through the groove and is fixedly connected to the connecting plate.
[0022] In one embodiment, the rotating arm is further provided with a locking assembly for fixing the drive wheel.
[0023] In one embodiment, the locking assembly includes a locking clamp and a third drive member;
[0024] The locking clamp is slidably mounted on the rotating arm, and the third driving member is mounted on the rotating arm and is used to drive the locking clamp to move along the length of the rotating arm until it abuts against the driving wheel.
[0025] In one embodiment, the third driving component is configured as a second hydraulic cylinder, the output shaft of which is fixedly connected to the locking clamp.
[0026] The beneficial effects of the technical solutions provided in this application include:
[0027] First, the height of the guide ball is adjusted using the height adjustment component. Then, the angle adjustment component is used to adjust the angle of the guide ball along the length of the steel box girder. After adjusting the position of the guide ball, the first driving component is used to drive the support seat to slide on the fixed base, thereby changing the position of the support seat on the fixed base. This pushes the guide ball against the surface of the steel box girder, increasing the adjustment range of the guide ball and making the height and angle adjustment of the guide ball more flexible and adaptable to steel box girders with different surface shapes. This solves the problem that the same set of guiding devices is difficult to adapt to steel box girders with different shapes, resulting in low guiding efficiency of the steel box girder. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a schematic diagram of the overall structure of a steel box girder jacking guide device in operation according to this application;
[0030] Figure 2 This is a schematic diagram of the overall structure of a single guide contact device in this application;
[0031] Figure 3 This is a cross-sectional view of a single set of guide abutment devices in this application;
[0032] Figure 4 This is a side sectional view of the support base in this application;
[0033] Figure 5 This is a top view of a single guide abutment device in this application;
[0034] In the diagram: 1. First reciprocating rotary motor; 2. Guide groove; 3. Support base; 4. Support arm; 5. Rotary arm; 6. Drive wheel; 7. Driven wheel; 8. Connecting plate; 9. Guide ball; 10. Second reciprocating rotary motor; 11. First hydraulic cylinder; 12. Fixed base; 13. Guide screw; 14. Mounting bracket; 15. Threaded channel; 16. Second hydraulic cylinder; 17. Locking clamp; 18. Steel box girder. Detailed Implementation
[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0036] This application provides a steel box girder jacking guide device, which can solve the problem that the same set of guide devices is difficult to adapt to steel box girders of different shapes, resulting in low guiding efficiency of steel box girders.
[0037] Reference Figure 1 and Figure 2 This application discloses a steel box girder jacking and guiding device, comprising two sets of identical and symmetrically arranged guiding abutment devices. A guiding space is formed between the two sets of guiding abutment devices for the movement of the steel box girder 18, allowing steel box girders 18 of different shapes to move along the guiding space. Each set of guiding abutment devices includes a fixed base 12, a first driving member, a support arm 4, a rotating arm 5, a mounting frame 14, a height adjustment assembly, and an angle adjustment assembly. A support seat 3 is slidably disposed on the fixed base 12, and the support seat 3 can slide along the length of the fixed base 12. The support arm 4 is vertically disposed on the support seat 3, and the rotating arm 5 is rotatably disposed at the end of the support arm 4 away from the support seat 3. The mounting frame 14 is rotatably disposed at the end of the rotating arm 5 away from the support arm 4, and a guide ball 9 for abutting against the steel box girder 18 is disposed on the mounting frame 14. The height adjustment component is mounted on the support base 3 and can adjust the rotation of the swing arm 5 along the height direction of the steel box girder 18; the angle adjustment component is mounted on the swing arm 5 and is used to control the movement of the mounting frame 14 along the length direction of the steel box girder 18.
[0038] When using the guide abutment device to abut the steel box girder 18, first push the support seat 3 on the fixed base 12 towards the steel box girder 18. Then, through the height adjustment component, control the rotating arm 5 to rotate along the height direction of the steel box girder 18 so that the mounting frame 14 set on the rotating arm 5 can be at the same height as the abutment point of the steel box girder 18. Then, use the angle adjustment component to adjust the angle of the mounting frame 14 so that the guide ball 9 on the mounting frame 14 can move along the length direction of the steel box girder 18. This allows the guide ball 9 to accurately abut against the abutment point surface of the steel box girder 18 with different shapes, increasing the adjustment range of the guide ball 9. This makes the height and angle adjustment of the guide ball 9 more flexible and more adaptable to steel box girders 18 with different surface shapes. This solves the problem that the same set of guide devices is difficult to adapt to steel box girders 18 with different shapes, resulting in low guiding efficiency of the steel box girder 18.
[0039] Reference Figure 3 and Figure 4 A guide groove 2 is provided on the fixed base 12 along the length direction of the fixed base 12. A guide screw 13 is rotatably arranged in the guide groove 2 along the length direction of the fixed base 12. A guide part is provided on the support base 3. A threaded channel 15 is provided on the guide part to be threadedly engaged with the guide screw 13. The guide part extends into the guide groove 2. The guide screw 13 passes through the threaded channel 15 and is threadedly engaged with the threaded channel 15. When the guide screw 13 rotates, it can drive the support base 3 to move along the length direction of the guide screw 13. This allows the support base 3 to move along the length direction of the fixed base 12, which facilitates the adjustment of the horizontal distance between the support arm 4 and the rotating arm 5 on the support base 3 and the steel box girder 18.
[0040] More specifically, the first driving component is a first reciprocating rotary motor 1. The output shaft of the first reciprocating rotary motor 1 is coaxially connected to the guide screw 13. When the first reciprocating rotary motor 1 is turned on, the guide screw 13 can be driven to rotate, thereby causing the support base 3 to move along the length direction of the fixed base 12, making it more convenient to use.
[0041] Reference Figure 2 The rotating arm 5 is hinged to the top of the support arm 4. The height adjustment component includes a first hydraulic cylinder 11, which is mounted on the support base 3. The output end of the first hydraulic cylinder 11 is rotatably connected to the rotating arm 5. When the first hydraulic cylinder 11 is activated and its output end extends, it can drive the rotating arm 5 to rotate upward away from the support base 3. When the output end of the first hydraulic cylinder 11 is retracted, it can drive the rotating arm 5 to rotate downward towards the support base 3. The structure is simple and easy to operate.
[0042] Reference Figure 2 and Figure 3The angle adjustment component includes a drive wheel 6, a driven wheel 7, and a second drive component. The drive wheel 6 is rotatably mounted on the rotating arm 5. The central axis of the driven wheel 7 extends to be fixedly connected to the mounting frame 14. The length direction of the central axis of the driven wheel 7 is parallel to the height direction of the steel box girder 18, and the drive wheel 6 and the driven wheel 7 mesh with each other. The second drive component is used to drive the drive wheel 6 to rotate so that the drive wheel 6 can drive the driven wheel 7 to rotate during the rotation, thereby driving the mounting frame 14 to rotate along the length direction of the steel box girder 18.
[0043] More specifically, the second driving component includes a second reciprocating rotary motor 10, which is bolted to the opposite surfaces of the rotating arm 5 and the support base 3. The output shaft of the second reciprocating rotary motor 10 passes through the rotating arm 5 and is coaxially connected to the drive wheel 6, so that the drive wheel 6 is rotatably mounted on the rotating arm 5. Turning on the second reciprocating rotary motor 10 drives the drive wheel 6 to rotate on the rotating arm 5, making operation simple and adjustment convenient. A groove is provided at one end of the rotating arm 5 facing the steel box girder 18. A connecting plate 8 is provided at the end of the mounting frame 14 away from the guide ball 9. The end of the connecting plate 8 away from the guide ball 9 extends into the groove, and the central shaft of the driven wheel 7 passes through the groove and connects to the connecting plate 8. Thus, when the driven wheel 7 rotates with the drive wheel 6, it can drive the mounting frame 14 to move along the length of the steel box girder 18, allowing the guide ball 9 on the mounting frame 14 to abut against the abutment points of steel box girders 18 with different shapes.
[0044] Furthermore, referring to Figure 5 Due to the large weight of the steel box girder 18, in order to reduce the possibility of the mounting frame 14 rotating during the guidance of the steel box girder 18, a locking assembly for fixing the drive wheel 6 is also provided on the swing arm 5. The locking assembly includes a locking clamp 17 and a third driving component. In one embodiment of this application, the third driving component is a second hydraulic cylinder 16, which is mounted on the swing arm 5. The output end of the second hydraulic cylinder 16 is connected to the locking clamp 17 so that the locking clamp 17 is slidably mounted on the swing arm 5. The movement trajectory of the output end of the second hydraulic cylinder 16 is parallel to the length direction of the swing arm 5, and the locking clamp 17 is located at the end close to the drive wheel 6. When the second hydraulic cylinder 16 is activated, the locking clamp 17 moves toward the drive wheel 6 until the drive wheel 6 is locked, thereby locking the guide ball 9 on the mounting frame 14.
[0045] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0046] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0047] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A steel box girder jacking and guiding device, characterized in that, It includes: Two sets of identical and symmetrically arranged guide abutment devices form a guide space between the two sets of guide abutment devices for the movement of the steel box girder (18). Each set of guide abutment devices includes: A fixed base (12) is provided with a support seat (3) that slides along the length of the fixed base (12); The first driving member is disposed on the fixed base (12) and is used to drive the support (3) to slide along the length direction of the fixed base (12); Support arm (4), which is vertically mounted on the support base (3); A rotating arm (5) is rotatably disposed at one end of the support arm (4) away from the support base (3); Mounting bracket (14), which is rotatably disposed at one end of the rotating arm (5) away from the support arm (4), and the mounting bracket (14) is provided with a guide ball (9) for abutting against the steel box girder (18); A height adjustment assembly is provided on the support base (3) and is used to control the rotation of the swing arm (5) along the height direction of the steel box girder (18); And an angle adjustment component, which is disposed on the rotating arm (5) and is used to control the mounting frame (14) to move along the length direction of the steel box girder (18).
2. The steel box girder jacking and guiding device according to claim 1, characterized in that: A guide groove (2) is provided on the fixed base (12) along the length direction of the fixed base (12), and a guide screw (13) is rotatably provided in the guide groove (2) along the length direction of the fixed base (12); The support base (3) is provided with a guide part, and the guide part is provided with a threaded channel (15) that is threadedly engaged with the guide screw (13). The guide part extends into the guide groove (2), and the guide screw (13) is threadedly connected to the threaded channel (15).
3. The steel box girder jacking and guiding device according to claim 2, characterized in that: The first driving component is configured as a first reciprocating rotary motor (1), and the output shaft of the first reciprocating rotary motor (1) is coaxially connected with the guide screw (13).
4. The steel box girder jacking and guiding device according to claim 1, characterized in that: The height adjustment assembly includes a first hydraulic cylinder (11), which is mounted on the support base (3), and the output end of the first hydraulic cylinder (11) is rotatably connected to the rotating arm (5).
5. The steel box girder jacking and guiding device according to claim 1, characterized in that: The angle adjustment component includes a driving wheel (6), a driven wheel (7), and a second driving component; The drive wheel (6) is rotatably mounted on the rotating arm (5), and the central axis of the driven wheel (7) extends to be fixedly connected to the mounting bracket (14). The length direction of the central axis of the driven wheel (7) is parallel to the height direction of the steel box girder (18). The drive wheel (6) and the driven wheel (7) mesh with each other, and the second driving member is used to drive the drive wheel (6) to rotate.
6. A steel box girder jacking and guiding device according to claim 5, characterized in that: The second driving component includes a second reciprocating rotary motor (10) mounted on the rotating arm (5), and the output shaft of the second reciprocating rotary motor (10) is coaxially connected to the drive wheel (6).
7. A steel box girder jacking and guiding device according to claim 5, characterized in that: The rotating arm (5) has a groove at one end away from the support arm (4), and a connecting plate (8) is provided on the mounting bracket (14). The end of the connecting plate (8) away from the guide ball (9) extends into the groove of the rotating arm (5), and the central shaft of the driven wheel (7) passes through the groove and is fixedly connected to the connecting plate (8).
8. A steel box girder jacking and guiding device according to claim 5, characterized in that: The rotating arm (5) is also provided with a locking assembly for fixing the drive wheel (6).
9. A steel box girder jacking and guiding device according to claim 8, characterized in that: The locking assembly includes a locking clamp (17) and a third drive component; The locking clamp (17) is slidably disposed on the rotating arm (5), and the third driving member is disposed on the rotating arm (5) and is used to drive the locking clamp (17) to move along the length direction of the rotating arm (5) until it abuts against the driving wheel (6).
10. A steel box girder jacking and guiding device according to claim 9, characterized in that: The third driving component is configured as a second hydraulic cylinder (16), and the output shaft of the second hydraulic cylinder (16) is fixedly connected to the locking clamp (17).