Temporary supporting device for steel structure bridge erection
Through the combination of lifting mechanism, slewing mechanism and clamping arm mechanism, the problem of inconvenience in support of steel structure bridges during assembly and maintenance is solved, flexible adjustment of height and angle is achieved, and construction safety and convenience are improved.
Patent Information
- Application Number
- CN202422046273.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-22
AI Technical Summary
During assembly and maintenance of existing steel structure bridges, temporary support devices are inconvenient, height adjustment and angle adjustment are difficult, and it is easy to cause the bridge to tilt or fall.
A temporary support device including a lifting mechanism, a slewing mechanism and a clamping arm mechanism is designed to achieve flexible height and angle adjustment through electric push rods, slewing motors and lead screw motors to ensure stable clamping of the bridge.
It realizes flexible adjustment of the height and angle of the support device, improves construction safety, avoids the bridge tilt or falls, and enhances the convenience and safety of construction.
Smart Images
Figure CN223061453U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of steel structure bridge erection, and particularly relates to a temporary support device for steel structure bridge erection. Background Art
[0002] A steel structure bridge is a bridge whose main load-bearing structure is made of steel, that is, a steel structure bridge or a steel bridge. Prefabricated steel bridges have been widely used all over the world. Some support structures are used to prevent the bridge from collapsing during the assembly and repair and replacement of components of a steel structure bridge. However, since traditional support structures are fixedly installed and connected by screws, it is very inconvenient to remove the support structure during bridge repair. In addition, it is inconvenient to adjust the height and support angle of the existing support device for different parts of the bridge. Moreover, the bridge is prone to tilt and fall during support. Therefore, the temporary support device is inconvenient to use during the assembly or component replacement of the existing steel structure bridge. Content of the Utility Model
[0003] The utility model aims to solve the technical problem that the temporary support device is inconvenient to use during the installation and maintenance of existing steel structure bridges, and provides a temporary support device for the erection of steel structure bridges, which includes a horizontally arranged support seat that plays a role in supporting and fixing. Above the support seat, there is a lower support platform arranged parallel to the support seat, and a lifting mechanism is arranged between the lower support platform and the support seat. The lifting mechanism includes telescopic legs fixed at the four corners of the bottom end of the support seat, and the top ends of the telescopic legs are fixed at the bottom end of the lower support platform; it also includes an electric push rod arranged at the middle of the top end of the support seat, the bottom end of the electric push rod is fixed at the top end of the support seat, and the top end of the electric push rod is fixed at the bottom end of the lower support platform. When the free end of the electric push rod extends, the electric push rod pushes the lower support platform to move upward, thereby increasing the height of the lower support platform. When it is necessary to reduce the height of the lower support platform, the electric push rod is started, and the free end of the electric push rod retracts to pull the lower support platform to descend a certain height. The telescopic leg includes a vertically arranged telescopic outer tube, the bottom end of the telescopic outer tube is fixed at the top end of the support seat, the upper end of the telescopic outer tube is sleeved with a telescopic inner tube, the top end of the telescopic inner tube extends upward out of the telescopic outer tube, and the top end of the telescopic inner tube is fixed at the bottom end of the upper support platform. The telescopic leg plays a guiding role and can keep the lower support platform moving up and down in the vertical direction. Above the lower support platform, there is an upper support platform, and a slewing mechanism is arranged between the upper support platform and the lower support platform. The upper support platform is rotatably assembled on the lower support platform through the slewing mechanism. The slewing mechanism includes a slewing bearing, the inner ring of the slewing bearing is fixed on the lower support platform through a support shaft, and the upper support platform is detachably fixed at the top end of the outer gear ring of the slewing bearing through a fixing bolt; and a motor support frame is fixed on the lower support platform, a slewing motor is fixed at the top end of the motor support frame, and the power output shaft of the slewing motor is in transmission connection with the outer gear ring of the slewing bearing through a transmission gear. When the slewing motor is started, the slewing motor drives the upper support platform to rotate through the transmission gear and the slewing bearing, thereby adjusting the angle of the clamping arms at the top end of the upper support platform. A support frame is fixed at the top end of the upper support platform, a horizontally arranged lead screw is rotatably assembled on the support frame, one end of the support frame is fixed with a lead screw motor, the power output shaft of the lead screw motor is in transmission connection with the lead screw, and two symmetrically arranged support blocks are threadedly connected to the lead screw. The internal threads of the two support blocks are opposite. A guiding track parallel to the lead screw is fixed on the upper support platform below the lead screw, a chute is arranged on the guiding track, the bottom ends of the two support blocks are both fixed with sliders, and the lower ends of the sliders are slidably assembled in the chute. A limiting groove parallel to the lead screw is arranged at the top end of the support frame, and clamping arms are fixed at the top ends of the two support blocks. When it is necessary for the clamping arms to clamp the bridge, the lead screw motor is started, and the lead screw motor drives the two support blocks to move towards each other through the lead screw until the two clamping arms contact and clamp the bridge. When the lead screw motor drives the lead screw to rotate in the reverse direction, the lead screw pushes the two clamping arms to move away from each other.
[0004] Preferably, the two clamping arms are symmetrically arranged and both are in an inverted L shape.
[0005] Preferably, the lead screw motor, the rotary motor, and the electric push rod are all connected to the power supply through cables; the lead screw motor, the rotary motor, and the electric push rod are all connected to the PLC controller through cables.
[0006] The above - mentioned solution has the following advantages:
[0007] With the setting of the lifting mechanism, when the free end of the electric push rod extends, the electric push rod pushes the lower support platform upward, thus increasing the height of the lower support platform. When it is necessary to reduce the height of the lower support platform, start the electric push rod, and the free end of the electric push rod retracts to pull the lower support platform down by a certain height, which is convenient for adjusting the height of the device; with the setting of the rotary mechanism, the rotary motor drives the upper support platform to rotate through the transmission gear and the rotary support, thus adjusting the angle of the clamping arm at the top of the upper support platform; with the setting of the clamping arm, the lead screw, and the lead screw motor, the lead screw motor can drive the lead screw to rotate, and then push the two clamping arms closer to each other to realize the clamping of the bridge, avoiding the bridge from tilting or rolling during the construction process and improving the construction safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 is a schematic structural diagram of the present utility model;
[0009] Figure 2 is a schematic diagram of the use state of the present utility model.
[0010] Reference numerals: 1, support base; 2, lifting mechanism; 3, lower support platform; 4, rotary mechanism; 5, upper support platform; 6, support frame; 7, bridge; 21, telescopic leg; 22, electric push rod; 23, telescopic outer tube; 24, telescopic inner tube; 41, rotary support; 42, motor support frame; 43, rotary motor; 44, transmission gear; 61, lead screw; 62, lead screw motor; 63, support block; 64, limit groove; 65, clamping arm; 66, guide track; 67, chute; 68, slider. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0011] As Figure 1-2As shown in the figure, a temporary support device for the erection of a steel structure bridge includes a horizontally arranged support base 1, and the support base 1 plays a role of supporting and fixing. Above the support base 1, there is a lower support platform 3 arranged parallel to the support base 1, and a lifting mechanism 2 is provided between the lower support platform 3 and the support base 1. The lifting mechanism 2 includes telescopic legs 21 fixed at the four corners of the bottom end of the support base 1, and the top ends of the telescopic legs 21 are fixed to the bottom end of the lower support platform 3; it also includes an electric push rod 22 arranged in the middle of the top end of the support base 1. The bottom end of the electric push rod 22 is fixed to the top end of the support base 1, and the top end of the electric push rod 22 is fixed to the bottom end of the lower support platform 3. When the free end of the electric push rod 22 extends, the electric push rod 22 pushes the lower support platform 3 to move upward, thereby increasing the height of the lower support platform 3. When it is necessary to reduce the height of the lower support platform 3, the electric push rod 22 is started, and the free end of the electric push rod 22 retracts to pull the lower support platform 3 to descend a certain height. The telescopic leg 21 includes a vertically arranged telescopic outer tube 23, the bottom end of the telescopic outer tube 23 is fixed to the top end of the support base 1, a telescopic inner tube 24 is sleeved on the upper end of the telescopic outer tube 23, the top end of the telescopic inner tube 24 extends upward out of the telescopic outer tube 23, and the top end of the telescopic inner tube 24 is fixed to the bottom end of the upper support platform 5. The telescopic leg 21 plays a guiding role and can keep the lower support platform 3 moving up and down in the vertical direction. Above the lower support platform 3, there is an upper support platform 5, and a slewing mechanism 4 is provided between the upper support platform 5 and the lower support platform 3. The upper support platform 5 is rotatably assembled on the lower support platform 3 through the slewing mechanism 4. The slewing mechanism 4 includes a slewing bearing 41, the inner ring of the slewing bearing 41 is fixed to the lower support platform 3 through a support shaft, and the upper support platform 5 is detachably fixed to the top end of the outer gear ring of the slewing support 43 through a fixing bolt; and a motor support frame 42 is fixed on the lower support platform 3, a slewing motor 4 is fixed to the top end of the motor support frame 42, the power output shaft of the slewing motor 4 is in transmission connection with the outer gear ring of the slewing bearing 41 through a transmission gear 44. When the slewing motor 43 is started, the slewing motor 43 drives the upper support platform 5 to rotate through the transmission gear 44 and the slewing bearing 41, thereby adjusting the angle of the clamping arm 65 at the top end of the upper support platform 5.A support frame 6 is fixed to the top end of the upper support platform 5. A horizontally arranged lead screw 61 is rotatably assembled on the support frame 6. One end of the support frame 6 is fixed with a lead screw motor 62. The power output shaft of the lead screw motor 62 is in transmission connection with the lead screw 61. Two symmetrically arranged support blocks 63 are threadedly connected to the lead screw 61. The internal threads of the two support blocks 63 are opposite. A guide rail 66 parallel to the lead screw 61 is fixed on the upper support platform 5 below the lead screw 61. A chute 67 is formed on the guide rail 66. The bottom ends of the two support blocks 63 are both fixed with sliders 68. The lower ends of the sliders 68 are slidably assembled in the chute 67. A limit groove 64 parallel to the lead screw 61 is formed at the top end of the support frame 6. Clamping arms 65 are fixed to the top ends of the two support blocks 63. When the clamping arms 65 are required to clamp the bridge 7, the lead screw motor 62 is started. The lead screw motor 62 drives the two support blocks 63 to move towards each other through the lead screw 61 until the two clamping arms 65 contact and clamp the bridge 7. When the lead screw motor 62 drives the lead screw 61 to rotate in the reverse direction, the lead screw 61 pushes the two clamping arms 65 to move away from each other.
[0012] Preferably, the two clamping arms 65 are symmetrically arranged and both the two clamping arms 65 are in an inverted L shape.
[0013] Preferably, the lead screw motor 62, the rotary motor 43 and the electric push rod 22 are all connected to the power supply through cables; the lead screw motor 62, the rotary motor 43 and the electric push rod 22 are all connected to the PLC controller through cables.
[0014] Usage process:
[0015] When the utility model is in use, first, the device is placed flat on the ground. Then, the electric push rod 22 is started to adjust the height of the two clamping arms 65. The free end of the electric push rod 22 extends, and the electric push rod 22 pushes the lower support platform 3 to move upward, thereby increasing the height of the lower support platform 3. When it is necessary to reduce the height of the lower support platform 3, the electric push rod 22 is started. The free end of the electric push rod 22 retracts to pull the lower support platform 3 to descend a certain height, which is convenient for adjusting the height of the device. Then, the rotary motor 43 is started. The rotary motor 43 drives the upper support platform 5 to rotate through the transmission gear 44 and the rotary support 41, thereby adjusting the angle of the clamping arms 65 at the top end of the upper support platform 5. After the bridge 7 is placed on the top end of the support frame 6, the lead screw motor 62 is started. The lead screw motor 62 drives the lead screw 61 to rotate, and then pushes the two clamping arms 65 to move closer to each other, realizing the clamping of the bridge 7, avoiding the inclination or rolling of the bridge 7 during the construction process, and improving the construction safety.
[0016] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", 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 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 therefore should not be construed as a limitation to the present utility model.
[0017] The above embodiments are illustrative of the present utility model and not restrictive thereof. Any scheme obtained by simply transforming the present utility model falls within the protection scope of the present utility model.
Claims
1. A temporary support device for the erection of a steel structure bridge, comprising a horizontally arranged support base, an upper support platform parallel to the support base is arranged above the support base, and a lifting mechanism is arranged between the upper support platform and the support base, and it is characterized in that: Above the lower support platform, there is an upper support platform. A slewing mechanism is provided between the upper support platform and the lower support platform. The upper support platform is rotatably assembled on the lower support platform through the slewing mechanism. A support frame is fixed at the top end of the upper support platform. A horizontally arranged lead screw is rotatably assembled on the support frame. One end of the support frame is fixed with a lead screw motor. The power output shaft of the lead screw motor is in transmission connection with the lead screw. Two symmetrically arranged support blocks are threadedly connected to the lead screw. The internal threads of the two support blocks are opposite. A guide rail parallel to the lead screw is fixed on the upper support platform below the lead screw. A chute is provided on the guide rail. The bottom ends of the two support blocks are both fixed with sliders, and the lower ends of the sliders are slidably assembled in the chute. A limit groove parallel to the lead screw is provided at the top end of the support frame. Clamping arms are fixed at the top ends of the two support blocks.
2. The temporary support device for the erection of a steel structure bridge according to claim 1, characterized in that: The lifting mechanism includes telescopic legs fixed at the four corners of the bottom end of the support base. The top ends of the telescopic legs are fixed to the bottom end of the lower support platform; it also includes an electric push rod arranged in the middle of the top end of the support base. The bottom end of the electric push rod is fixed to the top end of the support base, and the top end of the electric push rod is fixed to the bottom end of the lower support platform.
3. The temporary support device for the erection of a steel structure bridge according to claim 2, characterized in that: The telescopic leg includes a vertically arranged telescopic outer tube. The bottom end of the telescopic outer tube is fixed to the top end of the support base. The upper end of the telescopic outer tube is sleeved with a telescopic inner tube. The top end of the telescopic inner tube extends upward out of the telescopic outer tube, and the top end of the telescopic inner tube is fixed to the bottom end of the upper support platform.
4. The temporary support device for the erection of a steel structure bridge according to claim 1, characterized in that: The slewing mechanism includes a slewing bearing. The inner ring of the slewing bearing is fixed to the lower support platform through a support shaft. The upper support platform is detachably fixed to the top end of the outer gear ring of the slewing bearing through a fixing bolt; and a motor support frame is fixed on the lower support platform. A slewing motor is fixed at the top end of the motor support frame. The power output shaft of the slewing motor is in transmission connection with the outer gear ring of the slewing bearing through a transmission gear.
5. The temporary support device for the erection of a steel structure bridge according to claim 1, characterized in that: The two clamping arms are symmetrically arranged and both clamping arms are in an inverted L shape.
6. The temporary support device for the erection of a steel structure bridge according to claim 1, characterized in that: The lead screw motor, the slewing motor, and the electric push rod are all connected to the power supply through cables; the lead screw motor, the slewing motor, and the electric push rod are all connected to the PLC controller through cables.