Movable prestress tensioning operation protection platform

Abstract

The utility model discloses a movable prestress tensioning operation protection platform. Comprising a protection frame, a transverse sliding set transversely fixed to the top in the protection frame, a longitudinal sliding set longitudinally fixed to the bottom of a transverse moving base of the transverse sliding set, an electric hoist hoisted to the bottom of a longitudinal moving base in the longitudinal sliding set and a hydraulic jack hoisted to the movable end of a winding rope of the electric hoist. Walking wheels are evenly arranged at the bottom of the protection frame. The tensioning operation platform is simple in structure, materials are convenient to obtain, and the problems that the tensioning operation platform is repeatedly assembled and tensioning equipment is difficult to position can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway bridge construction, in particular to a mobile prestressed tensioning operation protection platform. Background Art

[0002] With the rapid development of transportation, bridges account for an increasing proportion of highways, and prestressed precast beams have also developed rapidly. Traditional prestressed tensioning platforms require repeated assembly when moving, which is a large project and difficult to position during tensioning. Therefore, a convenient platform that does not require disassembly and assembly can significantly increase construction speed and save time. Summary of the Invention

[0003] The technical problem to be solved by the utility model is that the prestressed tensioning operation platform needs to be repeatedly assembled when it is moved, which results in a large workload and difficulty in positioning.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a mobile prestressed tensioning operation protection platform, including a protection frame, a transverse sliding group fixed laterally at the top of the protection frame, a longitudinal sliding group fixed longitudinally at the bottom of the transverse moving seat of the transverse sliding group, an electric hoist hoisted at the bottom of the longitudinal moving seat in the longitudinal sliding group and a hydraulic jack hoisted at the movable end of the electric hoist winding rope, and walking wheels are evenly arranged at the bottom of the protection frame.

[0005] Preferably, the transverse sliding group includes a transverse rail, a transverse moving wheel and the transverse moving seat. A driving motor for driving the transverse moving wheel to rotate is fixed on the outside of the transverse moving seat. The transverse rail is arranged on both sides of the inside of the protective frame. The transverse rail is an I-beam. The transverse moving seat is U-shaped. The transverse moving wheels are rotatably arranged on both sides of the inside of the moving seat. The inner side wall of the transverse moving seat is fitted with the outer side wall of the transverse rail, and the bottom of both ends of the transverse rail is connected to the inner side wall of the protective frame through a rib plate.

[0006] Preferably, the longitudinal sliding group includes a longitudinal rail, a longitudinal moving wheel and the longitudinal moving seat, the longitudinal rail is connected to the bottom of the transverse moving seat, the longitudinal moving seat is U-shaped, the longitudinal rail is an I-beam and is provided with a sealing plate at both ends, and the inner wall is in contact with the outer wall of the longitudinal rail, the longitudinal moving wheel is rotatably arranged on the inner wall of the longitudinal moving seat, a driving motor for driving the longitudinal moving wheel to rotate is fixed on the outside of the longitudinal moving seat, a hook is provided at the bottom of the longitudinal moving seat, and the top end of the electric hoist is connected to the hook.

[0007] Preferably, racks are axially arranged on the inner sides of the transverse track and the longitudinal track, and the movable end walls of the transverse moving wheel and the longitudinal moving wheel are coaxially fixedly connected with gears, and the gears are meshed with the racks.

[0008] Preferably, protective steel plates are arranged on both sides, top, bottom and front of the protective frame, an external display is installed on the outer side wall of the protective frame, the rack is a multi-section splicing structure, each section of the splicing structure is independently fixed by bolts, and a pressure sensor is installed at the bottom of each section of the splicing structure, and the pressure sensor signal is connected to the external display.

[0009] 1. The utility model provides a mobile prestressed tensioning operation protection platform with a simple and reasonable structure, economical and applicable, and no need for repeated assembly. The horizontal sliding group is used to drive the hydraulic jack to move horizontally and horizontally, and the longitudinal sliding group is used to drive the hydraulic jack to move horizontally and longitudinally. The electric hoist drives the hydraulic jack to move up and down by rewinding and unwinding, which can solve the problem of difficult positioning of tensioning operations.

[0010] 2. A gear rack matching mechanism is set up to ensure that when the motor stops driving the lateral moving wheel or the longitudinal moving wheel to move, even if the corresponding track is in an inclined state, the lateral moving seat or the longitudinal moving seat will not be displaced, thereby ensuring the stability of the tensioning operation.

[0011] 3. Protective steel plates are installed to prevent injuries to workers caused by broken steel strands during construction. At the same time, the rack adopts a segmented structure, and each pressure sensor has corresponding detection. By comparing the stress conditions of each section of the rack horizontally, it can be determined whether the horizontal track or the vertical track is bent, and the horizontal track or the vertical track can be replaced in time. The rack fixed with bolts is convenient for disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is a main view of a mobile prestressed tensioning operation protection platform as an example of a utility model.

[0014] Figure 2 This is a side view of a mobile prestressed tensioning operation protection platform as an example of a utility model.

[0015] Figure 3 This is a top view of a mobile prestressed tensioning operation protection platform as an example of a utility model.

[0016] Figure 4 for Figure 1 Magnified view of area A in center.

[0017] In the figure: 1. Protective frame; 2. Horizontal sliding group; 21. Horizontal track; 22. Horizontal moving wheel; 3. Longitudinal sliding group; 31. Longitudinal track; 32. Longitudinal moving wheel; 4. Electric hoist; 5. Jack; 6. Travel wheel; 7. Gear; 8. Rack. DETAILED DESCRIPTION

[0018] like Figure 1-4 As shown, the utility model provides a mobile prestressed tensioning operation protection platform, including a protection frame 1, a transverse sliding group 2 fixed laterally to the top of the protection frame 1, a longitudinal sliding group 3 fixed longitudinally to the bottom of the transverse moving seat of the transverse sliding group 2, an electric hoist 4 hoisted at the bottom of the longitudinal moving seat in the longitudinal sliding group 3, and a hydraulic jack 5 hoisted at the movable end of the winding rope of the electric hoist 4. Travel wheels 6 are evenly arranged on the bottom of the protection frame 1.

[0019] When performing tensioning operations, according to the position of the steel strand to be constructed, the driving motors on the transverse moving seats connected to both ends of a longitudinal sliding group 3 are simultaneously controlled to make the two driving motors rotate synchronously in the same direction, and the transverse moving wheel 22 drives the longitudinal track 31 to move through the transverse moving seat, and then the position of the hydraulic jack 5 connected to the bottom of the longitudinal track 31 is adjusted in the horizontal transverse direction, so that the hydraulic jack 5 is aligned with the steel strand to be tensioned, and then the driving motor on the longitudinal moving seat is controlled to rotate the longitudinal moving wheel 32, and the longitudinal moving wheel 32 is moved in the horizontal longitudinal direction through the longitudinal moving seat, the electric hoist 4 and the hydraulic jack 5, so that the hydraulic jack 5 is sleeved on the steel strand, and during the sleeve process, the height of the hydraulic jack 5 is adjusted by adjusting the retraction and extension of the electric hoist 4, so that the hydraulic jack 5 is smoothly sleeved on the steel strand.

[0020] like Figure 1-4 As shown. The transverse sliding group 2 includes a transverse rail 21, a transverse moving wheel 22 and the transverse moving seat. A driving motor for driving the transverse moving wheel 22 to rotate is fixed on the outside of the transverse moving seat. The transverse rail 21 is arranged on both sides of the interior of the protective frame 1. The transverse rail 21 is an I-beam. The transverse moving seat is U-shaped. The transverse moving wheels 22 are rotatably arranged on both sides of the interior of the moving seat. The inner side wall of the transverse moving seat fits with the outer side wall of the transverse rail 21. The bottom of both ends of the transverse rail 21 is connected to the inner side wall of the protective frame 1 through a rib plate. Multiple rib plates are connected to both ends of the transverse rail 21 to ensure that the ends of the transverse rail 21 can remain horizontal during long-term operation. The transverse rail 21 is located on both sides of the interior of the protective frame 1, so the driving motor is installed on the inside and powered by the top cable. Four transverse moving wheels 22 are installed in each transverse moving seat to increase the contact area.

[0021] like Figure 1-4The longitudinal sliding group 3 includes a longitudinal track 31, a longitudinal moving wheel 32 and the longitudinal moving seat. The longitudinal track 31 is connected to the bottom of the transverse moving seat. The longitudinal moving seat is U-shaped. The longitudinal track 31 is an I-beam with sealing plates at both ends, and the inner side wall is in contact with the outer side wall of the longitudinal track 31. The longitudinal moving wheel 32 is rotatably arranged on the inner side wall of the longitudinal moving seat. A driving motor for driving the longitudinal moving wheel 32 is fixed to the outside of the longitudinal moving seat. A hook is provided at the bottom of the longitudinal moving seat, and the top end of the electric hoist 4 is connected to the hook.

[0022] Use a new U-shaped transverse moving seat or longitudinal moving seat, and make the inner bottom of the transverse moving seat or longitudinal moving seat fit with the bottom surface of the corresponding track, and the relative inner wall fit with the outer wall of the corresponding track to ensure that the transverse moving seat or longitudinal moving seat will not shift during movement.

[0023] like Figure 4 As shown, racks 8 are axially arranged on the inner sides of both the transverse and longitudinal rails 21 and 31. Gears 7 are coaxially fixedly connected to the movable end walls of the transverse and longitudinal moving wheels 22 and 32, and mesh with the racks 8. The combination of gears 7 and racks 8 serves to limit the position of the moving wheels after the drive motor is shut down. Even if the rails are deformed or the entire device is tilted, the corresponding moving seats remain stable in their originally set positions, thereby ensuring the safety of the tensioning operation.

[0024] As a preferred embodiment of the present invention, protective steel plates are arranged on both sides, top, bottom and front of the protective frame 1, an external display is installed on the outer side wall of the protective frame 1, the rack 8 is a multi-section splicing structure, each section of the splicing structure is independently fixed by bolts, and a pressure sensor is installed at the bottom of each section of the splicing structure, and the pressure sensor signal is connected to the external display.

[0025] Except for the rear side where the steel strands enter, the protective frame 1 is provided with 5mm thick protective steel plates on all other sides to prevent the steel strands from breaking and popping out during the tensioning operation, causing personal injury. When the staff cannot directly observe the tensioning process, they can make judgments based on the changes in the value of the pressure sensor. After the steel strands enter the hydraulic jack 5, the hydraulic jack 5 can be slightly lowered, and the exposed end of the steel strands can bear a small part of the gravity of the hydraulic jack 5 if the force allows. Then the pressure sensor is at the preset value. If the steel strands break during the tensioning process, they cannot provide support, and the signal value transmitted by the pressure sensor increases, and the staff immediately stops the tensioning work. In addition, the rack 8 adopts a segmented structure, and each pressure sensor has corresponding detection. By comparing the force conditions of each section of the rack 8 horizontally, it can be determined whether the transverse track 21 or the longitudinal track 31 is bent, and the transverse track 21 or the longitudinal track 31 can be replaced in time to avoid damage to the device when adjusting the position of the movable seat due to excessive bending. The rack fixed with bolts is convenient for disassembly and assembly.

Claims

1. A mobile prestressed tensioning operation protection platform, characterized by: The utility model comprises a protective frame (1), a transverse sliding group (2) fixed transversely to the top of the protective frame (1), a longitudinal sliding group (3) fixed longitudinally to the bottom of the transverse movable seat of the transverse sliding group (2), an electric hoist (4) hoisted at the bottom of the longitudinal movable seat in the longitudinal sliding group (3), and a hydraulic jack (5) hoisted at the movable end of the reeling rope of the electric hoist (4), and walking wheels (6) are evenly arranged at the bottom of the protective frame (1).

2. A mobile prestressed tensioning operation protection platform according to claim 1, characterized in that: The transverse sliding group (2) includes a transverse rail (21), a transverse moving wheel (22) and the transverse moving seat. A driving motor for driving the transverse moving wheel (22) to rotate is fixed on the outside of the transverse moving seat. The transverse rail (21) is arranged on both sides of the interior of the protective frame (1). The transverse rail (21) is an I-beam. The transverse moving seat is U-shaped. The transverse moving wheels (22) are rotatably arranged on both sides of the interior of the moving seat. The inner side wall of the transverse moving seat is in contact with the outer side wall of the transverse rail (21). The bottoms of both ends of the transverse rail (21) are connected to the inner side wall of the protective frame (1) through ribs.

3. A mobile prestressed tensioning operation protection platform according to claim 2, characterized in that: The longitudinal sliding group (3) includes a longitudinal track (31), a longitudinal moving wheel (32) and the longitudinal moving seat, the longitudinal track (31) is connected to the bottom of the transverse moving seat, the longitudinal moving seat is U-shaped, the longitudinal track (31) is an I-beam and is provided with a sealing plate at both ends, and the inner side wall is in contact with the outer side wall of the longitudinal track (31), the longitudinal moving wheel (32) is rotatably arranged on the inner side wall of the longitudinal moving seat, a driving motor for driving the longitudinal moving wheel (32) to rotate is fixed on the outside of the longitudinal moving seat, a hook is provided at the bottom of the longitudinal moving seat, and the top end of the electric hoist (4) is connected to the hook.

4. A mobile prestressed tensioning operation protection platform according to claim 3, characterized in that: A rack (8) is axially arranged on the inner side of the transverse track (21) and the longitudinal track (31), and the movable end walls of the transverse moving wheel (22) and the longitudinal moving wheel (32) are coaxially fixedly connected with a gear (7), and the gear (7) is meshed with the rack (8).

5. A mobile prestressed tensioning operation protection platform according to claim 4, characterized in that: Protective steel plates are arranged on both sides, the top, the bottom and the front of the protective frame (1). An external display is installed on the outer side wall of the protective frame (1). The rack (8) is a multi-section splicing structure, each section of the splicing structure is independently fixed by bolts, and a pressure sensor is installed at the bottom of each section of the splicing structure, and the pressure sensor signal is connected to the external display.

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