Turnover control device and trap mouth transition bridge

Abstract

The invention relates to the field of elevators, in particular to a turnover control device and a trap opening transition bridge. The overturning control device comprises a supporting shell, a driving shaft and a driven shaft are arranged in the supporting shell, a driving fluted disc is arranged on the driving shaft, a driven fluted disc is arranged on the driven shaft, incomplete fluted discs are arranged on the driving fluted disc and the driven fluted disc, and gear teeth on the driving fluted disc and gear teeth on the driven fluted disc can be meshed with each other. A position keeping mechanism is arranged at each end of a gear tooth section of the driven fluted disc and is used for being matched with the driving fluted disc to keep the driven fluted disc in a static state; the trap mouth transition bridge comprises the turnover control device and is used for controlling the turnover of the transition bridge plate. The transition bridge plate is driven to turn over through the gear teeth, larger torque can be transmitted and borne, and the engineering application value is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of elevators, and more specifically to a tilting control device and a trap transition bridge. Background Technology

[0002] Platform-type lifting equipment with trap covers used in environments such as ships, civilian facility pits, and caves often have gaps between the lifting platform and the trap opening when the trap cover is open and the lifting platform rises to the trap opening. This gap cannot accommodate vehicles or roller pallets. A transition bridge needs to be installed near the trap opening. When tilted upwards, it fills the gap between the lifting platform and the trap opening, allowing vehicles transported on the lifting platform to pass smoothly. When tilted downwards, it avoids the space occupied by the closed trap opening cover and other equipment.

[0003] The applicant's previous invention patent application, publication number CN117429987A, provided a linkage device between a lift trap entrance transition bridge and a trap entrance cover. This device uses a transmission structure including a flipping control and a reversing device to connect and bind with the trap entrance cover's rotating arm. The rotating torque of the trap entrance cover's rotating arm drives the transition bridge to complete its upward and downward flipping actions. Its core transmission component, the flipping control device, includes key components such as a prime mover holding disc, a follower needle, and an angle control blade. When the trap entrance cover's rotating arm moves, it drives the prime mover holding disc and the follower needle to rotate. When the follower needle rotates into the angle control blade's groove, it drives the angle control blade and the transition bridge body to rotate. Due to its structural design, the angle control blade of this flipping control device can transmit relatively small torque, which has significant limitations in practical applications. Summary of the Invention

[0004] The purpose of this invention is to provide a flipping control device and a trap transition bridge to solve the problem that existing transition bridge flipping control devices can only transmit relatively small torques.

[0005] To achieve the above objectives, the flipping control device of the present invention adopts the following technical solution: A flipping control device includes a support housing, within which a drive shaft and a driven shaft are disposed. The drive shaft has a drive gear disk, and the driven shaft has a driven gear disk. Both the drive and driven gear disks are partially toothed, and their teeth mesh with each other to drive the flipped component to flip upwards and downwards within a flipping stroke. One end of the tooth section of the driven gear disk is provided with a position holding mechanism, which cooperates with the drive gear disk to maintain the driven gear disk in a stationary state, thereby keeping the flipped component in an upward-flipped state. The position holding mechanism includes an arc segment disposed on the edge of the driven gear disk. After the teeth of the drive and driven gear disks cease meshing, the arc segment fits against the outer edge of the toothless portion of the drive gear disk.

[0006] Furthermore, the position holding mechanism is provided at both ends of the tooth section of the driven tooth disk.

[0007] Furthermore, a transition section is provided between the toothless end and the toothed end of the active gear disk. The transition section is a smooth arc shape, and the closer it is to the toothed end, the shorter the distance between the transition section and the axis of the active shaft.

[0008] Furthermore, the two ends of the arc segment on the driven gear disk are provided with rounded corners.

[0009] Beneficial effects: Compared to the toothless section of the driving gear, the outer edge of the transition section gradually sinks towards the driving shaft, forming a relief groove between the toothless section end and the tooth root of the gear section end. This groove avoids the end of the arc section and the rounded corners at both ends of the arc section during the process of the arc section of the driven gear starting to fit and separate from the outer edge of the driving gear, making the fit and separation of the arc section with the outer edge of the driving gear smoother.

[0010] Furthermore, the support housing is a split structure, with the split points located at the axes of the drive shaft and the driven shaft.

[0011] Furthermore, flanges are provided at the docking positions of two adjacent parts of the supporting shell, and the two parts are fixedly connected by flange bolts.

[0012] The beneficial effects of the flip control device are as follows: By driving the driven shaft to rotate through the gear teeth and maintaining the position of the driven shaft through the arc segment, it can transmit and bear greater torque, effectively improving the value of engineering applications; after the gear teeth of the two gear disks finish meshing, the arc segment of the outer edge of the driven gear disk fits against the toothless segment of the driving gear disk. Regardless of whether the driving gear disk continues to rotate, the driven gear disk and the driven shaft can remain stably stationary. This means that the rotation of the driven shaft and the driving shaft does not have to be completely synchronized. While achieving the position holding of the driven shaft, it also makes the movement of the driving shaft more flexible.

[0013] To achieve the above objectives, the trap entrance transition bridge of the present invention adopts the following technical solution: A transition bridge at a trap entrance includes several transition bridge plates and several flipping control devices. The transition bridge plates are rotatably mounted on the upper end of each inner wall of the trap channel. The flipping control devices are used to control the flipping of the transition bridge plates. The flipping control devices include a support housing, within which a drive shaft and a driven shaft are provided. The drive shaft has a drive gear disk, and the driven shaft has a driven gear disk. Both the drive and driven gear disks are partially toothed, and the teeth on the drive and driven gear disks can mesh with each other to drive the transition bridge plates to flip up and down within the flipping stroke. One end of the tooth section of the driven gear disk is provided with a position holding mechanism, which cooperates with the drive gear disk to keep the driven gear disk stationary, so that the transition bridge plate is kept in the flipped state. The position holding mechanism includes an arc segment provided on the edge of the driven gear disk. After the teeth of the drive and driven gear disks finish meshing, the arc segment fits against the outer edge of the toothless part of the drive gear disk.

[0014] Furthermore, the position holding mechanism is provided at both ends of the tooth section of the driven tooth disk.

[0015] Furthermore, a transition section is provided between the toothless end and the toothed end of the active gear disk. The transition section is a smooth arc shape, and the closer it is to the toothed end, the shorter the distance between the transition section and the axis of the active shaft.

[0016] Furthermore, the two ends of the arc segment on the driven gear disk are provided with rounded corners.

[0017] Beneficial effects: Compared to the toothless section of the driving gear, the outer edge of the transition section gradually sinks towards the driving shaft, forming a relief groove between the toothless section end and the tooth root of the gear section end. This groove avoids the end of the arc section and the rounded corners at both ends of the arc section during the process of the arc section of the driven gear starting to fit and separate from the outer edge of the driving gear, making the fit and separation of the arc section with the outer edge of the driving gear smoother.

[0018] Furthermore, the support housing is a split structure, with the split points located at the axes of the drive shaft and the driven shaft.

[0019] Furthermore, flanges are provided at the docking positions of two adjacent parts of the supporting shell, and the two parts are fixedly connected by flange bolts.

[0020] Furthermore, it also includes a transmission device, which includes several transmission links. The transmission links are connected one-to-one with the drive shaft of the flipping control device, and the two cannot rotate relative to each other. The ends of adjacent transmission links are connected by a reversing device, and some of the transmission links are fixedly connected to the trap cover rotating arm.

[0021] Furthermore, the reversing device consists of a bevel gear set.

[0022] Furthermore, it also includes a bridge plate base, which is fixed to the inner wall of the tunnel. The transition bridge plate is hinged to the bridge plate base, and the driven shaft of the flipping control device is connected to the hinge shaft of the transition bridge plate, and the two cannot rotate relative to each other.

[0023] The beneficial effects of the transition bridge at the trap opening: By driving the transition bridge plate to rotate through the gear teeth and maintaining its position through the arc segment, it can transmit and bear greater torque, effectively improving its engineering application value; After the gear teeth of the two gear discs finish meshing, the arc segment of the outer edge of the driven gear disc fits with the toothless segment of the outer edge of the driving gear disc. Regardless of whether the driving gear disc continues to rotate, the driven gear disc and the driven shaft can remain stably stationary. This means that the rotation of the driven shaft and the driving shaft does not need to be completely synchronized, ensuring that the transition bridge plate is in position before the trap cover is in place. This is more reliable than the transition bridge plate and the trap cover being in place simultaneously, and the control difficulty is lower. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the trap entrance transition bridge.

[0025] Figure 2 This is the front view of the flip control device.

[0026] Figure 3 This is the left view of the flip control device.

[0027] Figure 4 This is a top view of the flip control device.

[0028] Figure 5 This is the front view of the flip control device when the transition bridge plate is flipped down and held in place.

[0029] Figure 6 This is the main view of the flip control device when the transition bridge plate begins to flip upwards.

[0030] Figure 7 This is the front view of the flipping control device during the flipping process of the transition bridge plate.

[0031] Figure 8 This is the main view of the flip control device when the transition bridge plate flips up to the end of the meshing state of the driven and driving gears.

[0032] Figure 9 This is the front view of the flip control device when the transition bridge plate flips up to the position and remains in the holding state.

[0033] In the diagram: 1. Trap cover swing arm; 2. Transition bridge plate; 3. Bridge plate base; 5. Reversing device; 6. Transmission link; 7. Tilting control device; 8. Support housing; 9. Drive shaft; 10. Driven shaft; 11. Drive gear plate; 12. Driven gear plate; 13. Circular arc section; 14. Transition section. Detailed Implementation

[0034] The features and performance of the present invention will be further described in detail below with reference to specific embodiments.

[0035] Embodiment 1 of the flipping control device of the present invention: like Figures 2 to 4 As shown, the tilting control device includes a support housing 8 and a drive shaft 9 and a driven shaft 10 installed inside the support housing 8. Both the drive shaft 9 and the driven shaft 10 are mounted inside the support housing 8 via bearings. The support housing 8 adopts a split structure at the axis of the drive shaft 9 and the driven shaft 10 to facilitate the installation of the drive shaft 9 and the driven shaft 10. The drive gear 11 is mounted on the drive shaft 9, and the driven gear 12 is mounted on the driven shaft 10. The relative rotation of the gear 11 and the shaft is restricted by a flat key or spline, and the axial sliding of the gear 11 relative to the shaft is restricted by a shaft shoulder, nut, or brake ring. After the shaft and the gear 11 are assembled into the support housing 8, the split parts of the support housing 8 are fixed by bolts.

[0036] Both the driving gear disk 11 and the driven gear disk 12 have a section of teeth on their outer edges, forming an incomplete gear disk. The teeth in the tooth section are continuous. The driving gear disk 11 drives the driven gear disk 12 and the driven shaft 10 to rotate continuously through tooth meshing, which is used to drive the flipped part to flip up and down within the flipping stroke. When the two ends of the teeth of the driven gear disk 12 mesh with the driving gear disk 11, they correspond to the flipped part being flipped up and down to the correct positions, respectively.

[0037] One end of the tooth section of the driven gear disk 12 is provided with a position holding mechanism. The position holding mechanism is an arc segment 13 provided on the edge of the driven gear disk 12. The arc segment 13 is connected to the end of the tooth section of the driven gear disk 12. The concave side of the arc segment 13 faces away from the center of the driven gear disk 12, and the diameter of the arc segment 13 is the same as the outer edge diameter of the toothless part of the driving gear disk 11. After the teeth of the driving gear disk 11 and the driven gear disk 12 finish meshing, the driven gear disk no longer rotates. Then the arc segment 13 is in contact with the outer edge of the toothless part of the driving gear disk 11. Since the center of the arc segment 13 is not the same as the rotation center of the driven gear disk 12, the rotation of the driven gear disk 12 is restricted by the arc segment 13 that is in contact with the driving gear disk 11, while the driving gear disk 11 can continue to rotate. The arc segment 13 and the outer edge of the toothless part of the driving gear disk 11 are in sliding fit.

[0038] The active gear disk 11 has a transition section 14 between the toothless section end and the toothed section end. The transition section 14 is a smooth arc shape, and the closer it is to the toothed section, the shorter the distance between the transition section 14 and the axis of the active shaft 9. Typically, the outer edge of the toothless section of the active gear disk 11 coincides with the pitch circle of the toothed section. The transition section 14 smoothly connects the end of the toothless section with the root of the last tooth of the toothed section, forming a recessed groove structure between the toothed section and the toothless section. The arc section 13 of the driven gear disk 12 is a boss structure that protrudes beyond the outer edge of the toothless section of the driven gear disk 12. The end of the arc segment 13 connects to the tip of the last tooth. The reason for setting the transition segment 14 is that at the initial moment when the arc segment 13 of the driven gear disk 12 engages and disengages from the outer edge of the toothless section of the driving gear disk 11, the end of the arc segment 13 will have a clear tendency to move inward beyond the outer edge of the driving gear disk 11 and cut into it. In other words, the end of the arc segment 13 will interfere with the outer edge of the driving gear disk 11. The recessed transition segment 14 is to avoid the cutting action of the end of the arc segment 13 and prevent this interference. Figure 6 The interference avoidance process can be seen in the arc segment 13 as it begins to separate from the outer edge of the drive gear 11. Figure 8 The process of interference avoidance when the arc segment 13 and the outer edge of the driving gear 11 begin to fit together can be seen. At the same time, rounded corners are provided on both ends of the arc segment 13 on the driven gear 12 to further ensure that no interference occurs, making the fitting or disassembly of the arc segment 13 smoother.

[0039] In other embodiments, the gear and shaft are integrated into a single gear shaft.

[0040] In other embodiments, the split sections of the support housing 8 are connected by riveting, welding, snap-fitting, or other connection methods.

[0041] In other embodiments, an arc segment 13 is provided only at one end of the tooth segment of the driven gear disk 12 to maintain the driven shaft 10 in the upward-tilted state, while no arc segment 13 is provided at the other end of the tooth segment of the driven gear disk 12. After the driven shaft 10 is tilted down to the position, the driving gear disk 11 stops rotating. At this time, the tooth segment of the driven gear disk 12 is still meshing with the teeth of the driving gear disk 11. The rotation of the driven gear disk 12 is restricted by the meshing of the teeth. In this embodiment, the driving shaft 9 no longer rotates after the driven shaft 10 is tilted down to the position. This embodiment is suitable for working conditions where the driven gear disk 12 is not subjected to large loads after the driven shaft 10 is tilted down to the position.

[0042] Embodiment 1 of the trap entrance transition bridge of the present invention: like Figure 1As shown, the transition bridge at the trough entrance includes several transition bridge plates 2, several flipping control devices 7, and a transmission device. The flipping control device 7 can adopt any of the above embodiments. The number of transition bridge plates 2 is the same as the number of trough sidewalls. The transition bridge plates 2 are hinged to the upper ends of each sidewall of the trough in a one-to-one correspondence. Specifically, a bridge plate base 3 is fixed to the upper end of the trough sidewall. The transition bridge plates 2 are hinged to the bridge plate base 3. The transition bridge plates 2 can be flipped up to a horizontal state or down to a vertical state around the hinge axis with the bridge plate base 3.

[0043] The sidewalls of the tunnel are usually rectangular, meaning that the transition bridge plate 2 includes two long-side transition plates and one short-side transition plate. The long-side transition plates are provided with a larger number of bridge plate bases 3, while the short-side transition plates are provided with a smaller number of bridge plate bases 3. The number of flipping devices is the same as the number of transition bridge plates 2, and they can also be fixed on the bridge plate bases 3. The driven shaft 10 of the flipping device is fixedly connected to the hinge shaft of the transition bridge plate 2. The driven shaft 10 of the flipping device drives the transition bridge plate 2 to flip up and down around the hinge shaft. The arc segments 13 at both ends of the tooth section of the driven gear disk 12 keep the transition bridge plate 2 in the flipped state after it has flipped up and down to the correct position.

[0044] The transmission device includes several transmission links 6. The drive shaft 9 of each flip control device 7 is fixedly connected to a transmission link 6. The ends of adjacent transmission links 6 are connected by a reversing device 5 composed of bevel gear sets. The meshing of the bevel gears realizes the transmission between different shafts of two adjacent transmission links 6. The rotating arm of the trap cover is fixedly connected to the corresponding transmission link 6. When the trap cover is opened and closed, the rotating arm drives the transmission link 6 connected to it to rotate, which in turn drives all the transmission links 6 to rotate through the reversing device 5, which in turn drives the drive shaft 9 of all the flip control devices 7 to rotate, which in turn drives the driven shaft 10 of the flip control device 7 to rotate, which in turn drives all the transition bridge plates 2 to flip, realizing the linkage control of the opening and closing of the transition bridge plates 2 and the trap cover.

[0045] The working process of this embodiment is as follows: like Figure 5-9 As shown, during the opening of the trap cover, the rotating arm of the trap cover drives the transition bridge plate 2 from the lowered position and holding state to the upper position via the transmission device and the flipping control device 7. The state of the flipping control device 7 is as follows: Figure 5As shown, the transition bridge 2 remains in the upward-flipped position until it is fully engaged. Specifically, when the teeth of the driving gear 11 and the driven gear 12 begin to mesh, the transition bridge 2 begins to flip upward. Simultaneously, as the teeth cease meshing, the arc segment 13 on the driven gear 12 begins to contact the outer edge of the driving gear 11. The trap cover continues to open, causing the driving gear 11 to continue rotating. The outer edge of the driving gear 11 pushes the driven gear 12 to continue rotating through the arc segment 13 until the arc segment 13 of the driven gear 12 is fully engaged with the toothless outer edge of the driving gear 11. At this point, the transition bridge 2 is fully engaged, and the arc segment 13 and the driving gear 12... The outer edge of the drive gear 11 is engaged to maintain its position, while the trap cover can continue to open until it is fully open. During the opening of the trap cover, the drive gear 11 continues to rotate. At this time, the toothless outer edge of the drive gear 11 and the arc segment 13 of the driven gear 12 are in sliding engagement. Of course, the trap cover can also be opened to the full position at the same time as the transition bridge plate 2 is flipped up. When the arc segment 13 is fully engaged with the toothless outer edge of the drive gear 11, the drive gear 11 and the driven gear 12 stop rotating and maintain their positions. In short, the time for the transition bridge plate 2 to be flipped up to the full position is no later than the time for the trap cover to be opened to the full position.

[0046] During the trap cover closing process, the trap cover rotating arm 1, through the transmission device and the flipping control device 7, drives the transition bridge plate 2 from the upward-flipped position to the downward-flipped position and holds there. Specifically, when the teeth of the driving gear 11 begin to mesh with the teeth of the driven gear 12, the transition bridge plate 2 begins to flip downward. At the same time as the teeth finish meshing, the arc segment 13 on the driven gear 12 begins to contact the outer edge of the driving gear 11. The trap cover continues to open, driving the driving gear 11 to continue rotating. The outer edge of the driving gear 11 pushes the driven gear 12 to continue rotating through the arc segment 13 until the arc segment 13 of the driven gear 12 is completely in contact with the toothless outer edge of the driving gear 11. At this point, the transition bridge plate 2 is flipped down into position and remains in this position with the cooperation of the arc segment 13 and the outer edge of the drive gear disk 11. The trap cover can continue to open until it is closed. During the closing process of the trap cover, the drive gear disk 11 continues to rotate. At this time, the outer edge of the toothless section of the drive gear disk 11 is in sliding fit with the arc segment 13 of the driven gear disk 12. Of course, the trap cover can also be closed at the same time as the transition bridge plate 2 is flipped down into position. At the same time as the arc segment 13 is completely in contact with the outer edge of the toothless section of the drive gear disk 11, the drive gear disk 11 and the driven gear disk 12 stop rotating and maintain their positions. In short, the time for the transition bridge plate 2 to be flipped down into position is no later than the time for the trap cover to be closed into position.

[0047] In other embodiments, the support housing 8 of the flipping device is fixed to the side wall of the tunnel.

[0048] In other embodiments, two bridge bases 3 are provided only at both ends of each transition bridge 2.

[0049] In other embodiments, the transmission link 6 is not connected to the rotating arm of the trap cover, but is driven by a separate drive device such as a motor. In this way, the flipping of the transition bridge plate 2 is no longer linked to the opening and closing of the trap cover, but is controlled by the drive device. Accordingly, the timing of the flipping of the transition bridge plate 2 and the opening and closing of the trap cover needs to be controlled by the control system.

[0050] In other embodiments, instead of a transmission device, each flipping control device 7 has its drive shaft 9 connected to a drive device, such as a motor. In this way, the flipping of each transition bridge plate 2 is controlled separately. The control system needs to control the synchronicity of the flipping of each transition bridge plate 2, as well as the timing of the flipping of the transition bridge plate 2 and the opening and closing of the trap cover.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A flipping control device, comprising a support housing, a drive shaft and a driven shaft disposed within the support housing, a drive gear disk disposed on the drive shaft, and a driven gear disk disposed on the driven shaft, characterized in that, Both the driving and driven gear disks are partially geared, and the teeth on the driving and driven gear disks can mesh with each other to drive the flipped part to flip up and down within the flipping stroke. One end of the tooth section of the driven gear disk is provided with a position holding mechanism, which is used to cooperate with the driving gear disk to keep the driven gear disk stationary so that the flipped part is kept in the flipped state. The position holding mechanism includes an arc segment provided on the edge of the driven gear disk. After the teeth of the driving and driven gear disks finish meshing, the arc segment fits against the outer edge of the toothless part of the driving gear disk.

2. The flipping control device according to claim 1, characterized in that, The position holding mechanism is provided at both ends of the tooth section of the driven tooth disk.

3. The flipping control device according to claim 1 or 2, characterized in that, The active gear disk has a transition section between the toothless section end and the toothed section end. The transition section is a smooth arc shape, and the closer it is to the toothed section, the shorter the distance between the transition section and the axis of the active shaft.

4. The flipping control device according to claim 1 or 2, characterized in that, The two ends of the arc segment on the driven gear disk are rounded.

5. The flipping control device according to claim 1, characterized in that, The supporting housing is a split structure, with the split point located at the axis of the driving shaft and the driven shaft.

6. The flipping control device according to claim 5, characterized in that, Flanges are provided at the docking positions of two adjacent parts of the supporting shell, and the two parts are fixedly connected by flange bolts.

7. A trap entrance transition bridge, comprising a plurality of transition bridge plates and a plurality of tilting control devices, wherein the transition bridge plates are rotatably mounted on the upper end of each inner wall of the trap channel, and the tilting control devices are used to control the tilting of the transition bridge plates; characterized in that, The flipping control device is any one of the flipping control devices described in claims 1-6.

8. The trap entrance transition bridge according to claim 7, characterized in that, It also includes a transmission device, which includes several transmission links. The transmission links are connected one-to-one with the drive shaft of the flipping control device, and the two cannot rotate relative to each other. The ends of adjacent transmission links are connected by a reversing device, and some of the transmission links are fixedly connected to the trap cover rotating arm.

9. The trap transition bridge according to claim 8, characterized in that, The reversing device consists of a bevel gear set.

10. The trap entrance transition bridge according to any one of claims 7-9, characterized in that, It also includes a bridge plate base, which is fixed to the inner wall of the tunnel. The transition bridge plate is hinged to the bridge plate base. The driven shaft of the flipping control device is connected to the hinge shaft of the transition bridge plate, and the two cannot rotate relative to each other.

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