Large-torque ultra-low-speed ratchet drive swivel power system

Abstract

The present application belongs to the technical field of bridge swivel construction, and particularly discloses a large-torque ultra-low-speed ratchet drive swivel power system for controlling bidirectional rotation of a bridge swivel body, which comprises a lower turntable, an upper turntable rotatably arranged above the center of the lower turntable, at least one set of power devices in transmission connection with the periphery of the upper turntable, the power devices comprising a gear in engagement with the upper turntable, a ratchet device in transmission connection with the gear through a gear shaft, and a hydraulic jack for driving the ratchet device, one end of the ratchet device being in connection with the hydraulic jack through a ball head connecting rod device, the ratchet device being arranged on the gear shaft between the upper turntable and the lower turntable, and being used for converting linear motion of the hydraulic jack into one-way intermittent rotation operation of the gear. The power system has the characteristics of simple equipment, space saving, adjustable rotation direction, large-torque ultra-low-speed rotation and reusability.

Description

Technical Field

[0001] This invention belongs to the field of bridge rotation construction technology, specifically relating to a high-torque, ultra-low-speed ratchet-driven rotation power system. Background Technology

[0002] Traditional bridge rotation construction technology, with its mature construction techniques, safety, reliability, and minimal impact on the surrounding environment, is widely used under specific construction conditions. In the rotation of large-tonnage bridges, a high-torque, ultra-low-speed power system is required, making its power traction system particularly critical. The bridge horizontal rotation method uses continuous jacks to pull steel strands pre-embedded in the upper turntable to rotate the bridge. However, existing rotation power systems suffer from problems such as complex construction procedures, large space occupation, non-reusable traction cables, and unidirectional rotation limitations.

[0003] In view of the above problems, it is necessary to propose a high-torque, ultra-low-speed ratchet-driven rotation power system that is simple and economical, saves construction space, and allows for easy adjustment of the over-rotation angle. Summary of the Invention

[0004] The purpose of this invention is to provide a high-torque, ultra-low-speed ratchet-driven rotating power system to solve the aforementioned technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following solution: a high-torque, ultra-low-speed ratchet-driven rotary power system, comprising a lower turntable, an upper turntable rotating at the center above the lower turntable, at least one set of power devices being connected to the circumference of the upper turntable, the power devices comprising a gear meshing with the upper turntable, a ratchet device connected to the gear via a gear shaft, and a hydraulic jack driving the ratchet device, one end of the ratchet device being connected to the hydraulic jack via a ball joint connecting rod device, the ratchet device being located on the gear shaft between the upper and lower turntables, for converting the linear motion of the hydraulic jack into the unidirectional intermittent rotation of the gear.

[0006] Preferably, the gear shaft is connected to two sets of ratchet devices at different height positions, and the two sets of ratchet devices are respectively connected to two hydraulic jacks through ball joint connecting rod devices, and the initial piston states of the two hydraulic jacks are different.

[0007] Preferably, the two ends of the ball joint connecting rod are detachably connected to the ratchet device and the hydraulic jack, respectively.

[0008] Preferably, the ball joint connecting rod device includes a ball joint connecting rod connector, a ball joint connecting rod outer ring, a ball head, a stud, and a ball joint connecting rod. The ball joint connecting rod outer ring is threaded to both ends of the ball joint connecting rod. The ball joint connecting rod connector is rotatably connected to the ball joint connecting rod outer ring through the ball head and the stud. A screw is provided at the end of the ball joint connecting rod connector away from the ball joint connecting rod outer ring for connecting a hydraulic jack and a ratchet device.

[0009] Preferably, the ratchet device includes a ratchet base shell, a ratchet top shell, a ratchet, pawls, a spring, and a reversing wheel disposed between the ratchet base shell and the ratchet top shell. The ratchet base shell and the ratchet top shell are connected to form a spacer. The ratchet rotates within the spacer. Two pawls are engaged on both sides of the ratchet. The ends of the two pawls away from the ratchet are rotatably connected to the ratchet base shell, and the opposite sides of the two pawls are connected to the groove wall inside the ratchet base shell by springs. The pawls engage with the ratchet in one direction. The reversing wheel is used to switch the pawls that engage with the ratchet.

[0010] Preferably, a welded truss is detachably mounted on the upper surface of the lower turntable, and multiple jack fixing devices are welded onto the welded truss. The hydraulic jack is detachably and fixedly mounted on any of the jack fixing devices.

[0011] Preferably, a gear shaft positioning frame is detachably mounted on the upper surface of the lower turntable, and the gear and the ratchet device are mounted on the gear shaft positioning frame via the gear shaft.

[0012] Preferably, the upper turntable is connected to two sets of power devices on its circumferential transmission, and the two sets of power devices are centrally symmetrically distributed with respect to the center point of the upper turntable.

[0013] Preferably, two chains that mesh with gears in the two power devices are symmetrically fixed to the circumference of the upper turntable.

[0014] Compared with the prior art, the present invention discloses at least the following beneficial effects:

[0015] The system of this invention features simple equipment, space saving, adjustable rotation direction, high torque ultra-low speed rotation, and reusability. This system overcomes the shortcomings of existing traction power systems, such as difficult installation, large space occupation, limited reusable equipment, and difficulty in adjusting the over-rotation angle. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of the high-torque ultra-low-speed ratchet-driven rotating power system of the present invention;

[0018] Figure 2 This is a front view of the high-torque ultra-low-speed ratchet-driven rotating power system of the present invention;

[0019] Figure 3 This is an isometric view of the high-torque ultra-low-speed ratchet-driven rotating power system of the present invention;

[0020] Figure 4 This is an isometric view of the ratchet device in the high-torque ultra-low-speed ratchet drive rotation power system of the present invention;

[0021] Figure 5 This is a schematic diagram of a ball joint connecting rod device in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of a power device in one embodiment of the present invention;

[0023] In the diagram: 1. Gear; 2. Ratchet assembly; 3. Gear shaft; 4. Gear shaft positioning bracket; 5. Ball joint connecting rod assembly; 6. Hydraulic jack; 7. Jack fixing device; 8. Welded truss; 9. Reaction bolt; 10. Chain; 11. Upper turntable; 12. Lower turntable; 21. Ratchet; 22. Pad; 23. Spring; 24. Reversing wheel; 25. Ratchet bottom shell; 26. Ratchet top shell; 51. Ball joint connecting rod connector; 52. Ball joint connecting rod outer ring; 53. Ball head; 54. Stud; 55. Ball joint connecting rod. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figures 1 to 6As shown, this invention provides a high-torque, ultra-low-speed ratchet-driven rotation power system suitable for horizontal rotation of bridge piers. The power system includes a lower turntable 12, an upper turntable 11, and a power device connected to the upper turntable 11. The upper turntable 11 rotates to a central position above the lower turntable 12. The power device includes a gear 1, a ratchet device 2 connected to the gear 1 via a gear shaft 3, and a hydraulic jack 6 that drives the ratchet device 2. The ratchet device 2 is located between the upper and lower turntables 11. The input end of the ratchet device 2 is connected to the hydraulic jack 6, and the output end of the ratchet device 2 is connected to the gear shaft 3. The end of the gear shaft 3 away from the ratchet device 2 is fixed to the gear 1, which meshes with the upper turntable 11. During bridge rotation, the hydraulic jack 6 generates driving force, causing the ratchet device 2 to rotate. The ratchet device 2 then drives the gear 1 to rotate via the gear shaft 3, and the gear 1 drives the upper turntable 11 to rotate together, completing the rotation.

[0027] Specifically, a gear shaft positioning frame 4 and a welded truss 8 are installed on the lower turntable 12. The gear shaft positioning frame 4 and the welded truss 8 are mounted on the lower turntable 12 by reaction bolts 9. The reaction bolts 9 are pre-embedded in the lower turntable 12 and threadedly engage with nuts. The gear shaft positioning frame 4 and the welded truss 8 are secured to the lower turntable 12 by the reaction bolts 9 and nuts, and can be disassembled after construction for reuse. A jack fixing device 7 is welded onto the welded truss 8. Two hydraulic jacks 6 are fixed by the jack fixing device 7. The ejector shaft of the hydraulic jack 6 is connected to a ball joint connecting rod device 5. One end of the ball joint connecting rod device 5 is connected to the hydraulic jack 6, and the other end is connected to a ratchet device 2, used to transmit the driving force of the jack to the ratchet device 2. The gear 1 and the ratchet device 2 are mounted on the gear shaft positioning frame 4 via a gear shaft 3.

[0028] To further optimize the design and ensure the smooth completion of the rotation, two or more power devices are arranged around the upper turntable 11. The gears 1 in each power device are evenly distributed along the circumference of the upper turntable 11. For example, in this embodiment, two power devices are arranged around the upper turntable 11, symmetrically distributed around the center point of the upper turntable 11 to ensure a symmetrical distribution of the traction force during the rotation. The gears 1 in each power device mesh with the upper turntable 11, and each gear 1 is connected to the aforementioned ratchet device 2 and hydraulic jack 6.

[0029] In a further optimized design, two or more chains 10 are fixedly connected to the periphery of the upper turntable 11. The specific number of chains 10 corresponds to the number of power devices, and the gears 1 in each power device mesh with each of the chains 10.

[0030] In a further optimized design, the ratchet device 2 includes a ratchet base shell 25, a ratchet top shell 26, a ratchet 21, pawls 22, a spring 23, and a reversing wheel 24 disposed between the ratchet base shell 25 and the ratchet top shell 26. The ratchet base shell 25 and the ratchet top shell 26 are interconnected to form a spacer, and the side of the ratchet base shell 25 facing the ratchet top shell 26 has a slot, which can accommodate the ratchet 21, pawls 22, springs 23, and reversing wheel 24. The ratchet 21 is rotatably connected between the ratchet base shell 25 and the ratchet top shell 26. Two sets of pawls 22 and springs 23 are respectively fitted on its outer periphery. The ends of the two pawls 22 away from the ratchet 21 are rotatably connected to the ratchet base shell 25, and the opposite sides of the two pawls 22 are respectively connected to the inner groove wall of the ratchet base shell 25 through the springs 23. A reversing wheel 24 for changing the driving direction is provided between the two pawls 22. The specific structure of the ratchet device 2 is as follows: Figure 4 As shown.

[0031] Ratchet 21 is a wheel with a series of teeth that mesh with pawl 22 to achieve movement in a specific direction. By changing the pawl 22 that meshes with ratchet 21 through reversing wheel 24, one pawl 22 is made to enter the tooth groove of ratchet 21, thereby driving ratchet 21 to move intermittently in a certain direction. When pawl 22 disengages from the tooth groove, ratchet 21 stops rotating due to lack of driving force. When another pawl 22 enters the tooth groove of ratchet 21, the reversing drive is achieved.

[0032] Further optimization of the design involves using a ball joint linkage 5 to transmit power from the hydraulic jack 6 to the ratchet mechanism 2, while allowing for a certain range of degrees of freedom of movement. For example... Figure 5 As shown, the ball joint connecting rod device 5 includes a ball joint connecting rod connector 51, a ball joint connecting rod outer ring 52, a ball head 53, a stud 54, and a ball joint connecting rod 55. The ball joint connecting rod outer ring 52 is threaded to both ends of the ball joint connecting rod 55. The ball joint connecting rod connector 51 is rotatably connected to the ball joint connecting rod outer ring 52 via the ball head 53 and the stud 54. A screw is provided at the end of the ball joint connecting rod connector 51 away from the ball joint connecting rod outer ring 52 for connecting the hydraulic jack 6 and the ratchet device 2.

[0033] Further optimize the plan, such as Figure 6 As shown, two sets of ratchet devices 2 are connected at different heights on the gear shaft 3. The two sets of ratchet devices 2 are connected to two hydraulic jacks 6 through ball joint connecting rod devices 5. The initial piston states of the two hydraulic jacks 6 are different. During the rotation construction, the two hydraulic jacks 6 work together. When one of the hydraulic jacks 6 pushes the ball joint connecting rod device 5 outward to the specified stroke, the piston begins to retract. At the same time, the piston of the other hydraulic jack 6 begins to push the ball joint connecting rod device 5 outward. The two work synchronously to ensure the continuous rotation of this power system.

[0034] To further optimize the design, multiple jack fixing devices 7 welded to the welded truss 8 are evenly arranged circumferentially on the lower turntable 12 on the outer periphery of the gear shaft 3. The two hydraulic jacks 23 in the above structure can be detachably fixed to two of the jack fixing devices 7. If over-rotation occurs during the rotation construction process, the rotatable direction of the ratchet 21 can be adjusted by moving the reversing wheel 24 in the ratchet device 2, and the connection between the ball joint connecting rod 51 and the ratchet device 2 can be released. The ball joint connecting rod 5 and the hydraulic jack 6 can then be reinstalled to the adjacent jack fixing device 7 to correct the over-rotation angle.

[0035] It should be understood that the components are connected in a detachable manner. In the entire power system, except for the reaction bolts 9 embedded in the lower turntable 12 which cannot be reused, all other components can be removed and reused after the rotation construction is completed.

[0036] It should also be understood that, in practical applications, the hydraulic jack 6 can also be other drive structures or mechanical devices capable of realizing linear motion / rotational motion / telescopic motion, for example, it can be a servo motor, hydraulic cylinder, electric cylinder, etc.

[0037] Working principle of this invention embodiment:

[0038] First, assume that the rotation direction in this example is clockwise. During the rotation construction, the two hydraulic jacks 6 work together. When one jack pushes the ball joint connecting rod device 5 outward to the specified displacement position, the piston begins to retract. At the same time, the piston of the other jack begins to push the ball joint connecting rod device 5 outward. The two work synchronously to ensure the continuous rotation of this power system. When the ball joint connecting rod device 5 pushes outward, the pawl 22 in the ratchet device 2 drives the ratchet 21 to rotate. When the ball joint connecting rod device 5 retracts inward, the pawl 22 in the ratchet device 2 pushes the spring 23 outward to deform and prevent the ratchet 21 from reversing. The counterclockwise rotation of the ratchet 21 drives the gear shaft 3 and gear 1 to rotate. Gear 1 pulls the chain 10 and drives the upper turntable 11 to rotate, completing the rotation construction. Complete the rotation construction; if over-rotation occurs, the rotatable direction of the ratchet 21 can be adjusted by moving the reversing wheel 24 in the ratchet device 2, and the connection between the ball joint connecting rod 51 and the ratchet device 2 can be released. The ball joint connecting rod 5 and the hydraulic jack 6 can be reinstalled on the adjacent jack fixing device 7 to correct the over-rotation angle.

[0039] Compared with the prior art, the beneficial effects disclosed in this invention are:

[0040] 1. The driving device of this invention uses a traditional hydraulic jack, which has the characteristics of simple equipment, cost-saving, high torque and ultra-low speed rotation. Compared with the general rotating traction system, it is simple to construct and occupies less space.

[0041] 2. This invention can realize bidirectional rotation of the bridge body. The problem of over-rotation angle can be solved by adjusting the rotation direction of the ratchet by moving the reversing wheel in the ratchet device and reinstalling the ball joint connecting rod device and the hydraulic jack to the adjacent hydraulic jack fixing device.

[0042] 3. Traditional pre-embedded steel strand traction cables are complicated to install and cannot be reused after rotation. The main device of this invention is connected to the outside of the pier and can be dismantled and reused after rotation.

[0043] 4. The sprocket device and the hydraulic jack of the present invention are connected by a ball joint, which avoids damage to the rotating device caused by the slight irregular movement during the rotation of the bridge pier due to the use of a rigid connection.

[0044] All aspects not detailed in this invention are conventional technical means well known to those skilled in the art.

[0045] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to 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 invention.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A large torque ultra-low speed ratchet drive swivel power system characterized by, The application relates to a lifting device, which comprises a lower rotating disc (12) and a upper rotating disc (11) rotating above the lower rotating disc (12), at least one set of power devices is transmissionally connected to the periphery of the upper rotating disc (11), the power devices comprise a gear (1) engaged with the upper rotating disc (11), a ratchet device (2) transmissionally connected to the gear (1) through a gear shaft (3), and a hydraulic jack (6) driving the ratchet device (2) to act, one end of the ratchet device (2) is connected to the hydraulic jack (6) through a ball head connecting rod device (5), the ratchet device (2) is arranged on the gear shaft (3) between the upper rotating disc (11) and the lower rotating disc (12), and is used for converting the linear motion of the hydraulic jack (6) into the intermittent rotation of the gear (1). The gear shaft (3) is connected with two sets of ratchet devices (2) at different height positions, the two sets of ratchet devices (2) are connected to two hydraulic jacks (6) through the ball head connecting rod devices (5), and the initial piston states of the two hydraulic jacks (6) are different; when one of the hydraulic jacks (6) drives the ball head connecting rod device (5) to move outward to a specified displacement position, the piston starts to retract, and meanwhile the other hydraulic jack (6) starts to drive the other ball head connecting rod device (5) to move outward. The ratchet device (2) comprises a ratchet bottom shell (25), a ratchet top shell (26), a ratchet (21) arranged between the ratchet bottom shell (25) and the ratchet top shell (26), a pawl (22), a spring (23) and a reversing wheel (24), the ratchet bottom shell (25) and the ratchet top shell (26) are connected to form a spacer, the ratchet (21) rotates in the spacer, two pawls (22) are matched on the two sides of the ratchet (21), one end of the two pawls (22) away from the ratchet (21) is rotationally connected to the ratchet bottom shell (25), and the sides, away from each other, of the two pawls (22) are connected to the slot walls on the inner side of the ratchet bottom shell (25) through the springs (23), the pawl (22) is in one-way engagement with the ratchet (21), and the reversing wheel (24) is used for switching the pawl (22) matched with the ratchet (21).

2. The large torque ultra-low speed ratchet drive swivel power system of claim 1, wherein, The two ends of the ball head connecting rod device (5) are detachably connected to the ratchet device (2) and the hydraulic jack (6).

3. The large torque ultra-low speed ratchet drive swivel power system of claim 2, wherein, The ball head connecting rod device (5) comprises a ball head connecting rod connecting piece (51), a ball head connecting rod outer ring (52), a ball head (53), a peg (54) and a ball head connecting rod (55), the ball head connecting rod outer ring (52) is screw-connected to the two ends of the ball head connecting rod (55), the ball head connecting rod connecting piece (51) is rotationally connected to the ball head connecting rod outer ring (52) through the ball head (53) and the peg (54), and one end of the ball head connecting rod connecting piece (51) away from the ball head connecting rod outer ring (52) is provided with a screw rod, which is used for connecting the hydraulic jack (6) and the ratchet device (2).

4. The large torque ultra-low speed ratchet drive swivel power system of claim 1, wherein, A welded truss (8) is detachably mounted on the upper surface of the lower rotating disc (12), a plurality of jack fixing devices (7) are welded on the welded truss (8), and the hydraulic jack (6) is detachably fixed and mounted on any one of the jack fixing devices (7).

5. The large torque ultra-low speed ratchet drive swivel power system of claim 1 wherein, The lower turntable (12) upper surface detachable installation has gear shaft positioning frame (4), the gear (1) and the ratchet device (2) are installed on gear shaft positioning frame (4) through gear shaft (3).

6. The large torque ultra-low speed ratchet drive swivel power system of claim 1, wherein, The upper turntable (11) is drivenly connected with two groups of power devices, and the two groups of power devices are centrally symmetrically distributed with the circle point of the upper turntable (11).

7. The large torque ultra-low speed ratchet drive swivel power system of claim 6, wherein, The upper turntable (11) is symmetrically fixed with two chains (10) engaged with the gear (1) in the two power devices.

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