Folding ramp plate dock leveler

Abstract

The utility model belongs to the field of dock levelers, and relates to a folding ramp plate dock leveler which comprises a first ramp plate, a wheel carrier and a lifting hydraulic oil cylinder, the wheel carrier and the lifting hydraulic oil cylinder are installed on the first ramp plate, a second ramp plate is hinged to the lower end of the first ramp plate, and a traction motor used for traction is fixedly connected to the lower side of the first ramp plate. The traction motor is connected with a winch, a traction rope is wound on the winch, a first connector is connected to the end, away from the winch, of the traction rope, the first connector is sleeved with a first fixing shaft, and the first fixing shaft is fixedly connected with the second ramp plate. A first pulley used for changing the torque of the traction rope is arranged on the upper side of the first ramp plate, and a second pulley used for changing the torque of the traction rope is arranged on the lower side of the second ramp plate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of boarding bridges, and relates to a folding ramp plate boarding bridge. BACKGROUND

[0002] The application file with the application number CN201420356483.4 discloses a hydraulic ramp lifting plate, which is simple in structure and used for vehicle climbing or descending. However, the ramp plate of the boarding bridge is relatively long, so that a long enough truck needs to be used for transporting the boarding bridge, and the warehouse for storing the boarding bridge also needs to be spacious enough. In order to facilitate transportation and parking, a boarding bridge capable of changing the occupied area is needed. SUMMARY

[0003] The utility model provides a folding ramp plate boarding bridge for above -mentioned question

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme of a folding ramp plate boarding bridge, which comprises a first ramp plate, a wheel frame and a lifting hydraulic cylinder installed on the first ramp plate, a second ramp plate hinged to the lower end of the first ramp plate, a traction motor for traction fixedly connected to the lower side of the first ramp plate, a winch connected to the traction motor, a traction rope wound on the winch, a first adapter connected to the end of the traction rope away from the winch, a first fixed shaft sleeved with the first adapter, the first fixed shaft being fixedly connected with the second ramp plate, a first pulley for changing the torque of the traction rope arranged on the upper side of the first ramp plate, and a second pulley for changing the torque of the traction rope arranged on the lower side of the second ramp plate.

[0005] Preferably, a supporting hydraulic cylinder is installed on the lower side of the second ramp plate.

[0006] Preferably, a slow descent hydraulic cylinder is fixedly connected to the lower side of the second ramp plate, and the slow descent hydraulic cylinder is connected with a roller.

[0007] Preferably, a third pulley is further arranged on the upper side of the first ramp plate, the third pulley is connected with a handle, a fall-preventing rope is wound on the third pulley, a second adapter is connected to the end of the fall-preventing rope away from the third pulley, a second fixed shaft is sleeved with the second adapter, and the second fixed shaft is fixedly connected with the second ramp plate.

[0008] Preferably, pin holes are arranged at the ends of the first fixed shaft and the second fixed shaft away from the second ramp plate.

[0009] Compared with the prior art, the utility model has the advantages and positive effects that:

[0010] The utility model discloses a folding ramp board and a ramp board folding bridge, and belongs to the field of ramp board and ramp board folding bridge. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be to the embodiment description needed to use a simple introduction to the drawing, obviously, the following description in the drawing is some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0012] Figure 1 It is the folding ramp board ramp board folding bridge another visual angle structural schematic diagram.

[0013] Figure 2 It is the folding ramp board ramp board folding bridge another visual angle structural schematic diagram.

[0014] In the above various figures, 1, first ramp board;2, wheel frame;3, lift hydraulic oil cylinder;4, second ramp board;5, capstan;6, first adapter;7, first fixed shaft;8, first pulley;9, second pulley;10, support hydraulic oil cylinder;11, slow descent hydraulic oil cylinder;12, roller;13, third pulley;14, handle;15, second adapter;16, pin hole. DETAILED DESCRIPTION

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be to the embodiment description needed to use a simple introduction to the drawing, obviously, the following description in the drawing is some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0016] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but, the utility model can also be implemented in other ways different from the description herein, therefore, the utility model is not limited to the specific embodiments disclosed in the following disclosure.

[0017] As Figure 1 , Figure 2As shown, the mentioned upper side and lower side directions in the utility model are in the unfolded state of the folding ramp board. The utility model discloses a folding ramp board vehicle loading bridge, which comprises a first ramp board 1 and a wheel frame 2 and a lifting and lowering hydraulic oil cylinder 3 installed on the first ramp board 1, and the lifting and lowering hydraulic oil cylinder 3 is used for adjusting the height of the first ramp board 1. In order to adjust the floor area of the vehicle loading bridge, the utility model divides the complete ramp board into the first ramp board 1 and a second ramp board, and the lower end of the first ramp board 1 is hingedly connected with the second ramp board, so that the second ramp board can be rotated and folded. In order to facilitate folding, the lower side of the first ramp board 1 in the utility model is fixedly connected with a traction motor for traction, the traction motor is connected with a winch 5, the winch 5 is wound with a traction rope (not shown in the drawing), one end of the traction rope away from the winch 5 is connected with a first adapter 6, the first adapter 6 is sleeved with a first fixed shaft 7, the first fixed shaft 7 is fixedly connected with the second ramp board, the upper side of the first ramp board 1 is provided with a first pulley 8 for changing the torque of the traction rope, and the lower side of the second ramp board is provided with a second pulley 9 for changing the torque of the traction rope.

[0018] Specifically, the utility model sets up the traction motor to traction the second ramp board to fold or unfold, when folding the second ramp board, the traction rope is overlapped with the first pulley 8, then the first adapter 6 is sleeved on the first fixed shaft 7. When unfolding the second ramp board, the first adapter 6 is taken off from the first fixed shaft 7, the traction rope is separated from the first pulley 8, then the traction rope is overlapped with the second pulley 9, and the first adapter 6 is sleeved on the first fixed shaft 7.

[0019] In addition, the width of the second ramp board is less than the width of the first ramp board 1, and the traction motor, the first pulley 8 and other components are all arranged at the side edge of the first ramp board 1 or the second ramp board.

[0020] Further, the utility model is provided with a supporting hydraulic oil cylinder 10 on the lower side of the second ramp board, and the supporting hydraulic oil cylinder 10 can rotate. In the unfolded state of the second ramp board, the supporting hydraulic oil cylinder 10 is adjusted so that one end thereof is pressed on the ground to provide support force for the second ramp board.

[0021] In order to prevent the second ramp board from hitting the first ramp board 1 when folding, a slow descent hydraulic oil cylinder 11 is fixedly connected to the lower side of the second ramp board, and the slow descent hydraulic oil cylinder 11 is connected with a roller 12. Specifically, when the traction motor rotates the second ramp board through the balance point of traction force and gravity, the gravity can drive the second ramp board to rotate without traction force. Therefore, the slow descent hydraulic oil cylinder 11 is arranged, and when passing through the balance point, the roller 12 is pressed on the upper side of the first ramp board 1, and then the slow descent hydraulic oil cylinder 11 is retracted to slowly rotate the second ramp board.

[0022] In order to prevent the second ramp plate from falling on the ground when it is unfolded, the first ramp plate 1 is further provided with a third pulley 13, the third pulley 13 is connected with a handle 14, the handle 14 facilitates the operator to rotate the third pulley 13, the third pulley 13 is wound with a safety rope (not shown in the figure), the end of the safety rope away from the third pulley 13 is connected with a second adapter 15, the second adapter 15 is sleeved with a second fixed shaft, the second fixed shaft is fixedly connected with the second ramp plate. Specifically, when the traction motor drives the second ramp plate to rotate through the balance point of the traction force and the gravity, the gravity can drive the second ramp plate to rotate without the traction force, therefore, the operator applies a pulling force to the second ramp plate through the third pulley 13 to prevent it from falling on the ground.

[0023] Further, the first fixed shaft 7 and the second fixed shaft are provided with a pin hole 16 at the end away from the second ramp plate, a fixing pin is inserted into the pin hole 16 to prevent the corresponding first adapter 6 and the second adapter 15 from being separated.

[0024] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments shall still fall within the protection scope of the present application.

Claims

1. A folding ramp board drive-on bridge, comprising a first ramp board and a wheel frame mounted on the first ramp board, a lifting and lowering hydraulic oil cylinder, characterized in that, The first slope plate lower end is hinged with a second slope plate, the first slope plate lower side is fixedly connected with a traction motor for traction, the traction motor is connected with a winch, the winch is wound with a traction rope, the traction rope is connected with a first adapter at a far end from the winch, the first adapter is sleeved with a first fixed shaft, the first fixed shaft is fixedly connected with the second slope plate, the first slope plate upper side is provided with a first pulley for changing the traction rope torque, and the second slope plate lower side is provided with a second pulley for changing the traction rope torque.

2. The folding ramp board ramp according to claim 1, wherein, The second slope plate lower side is mounted with a supporting hydraulic oil cylinder.

3. The folding ramp board ramp according to claim 2, wherein, The second slope plate lower side is fixedly connected with a slow descent hydraulic oil cylinder, and the slow descent hydraulic oil cylinder is connected with a roller.

4. The folding ramp board ramp according to claim 3, wherein, The first slope plate upper side is further provided with a third pulley, the third pulley is connected with a handle, the third pulley is wound with a fall protection rope, the fall protection rope is connected with a second adapter at a far end from the third pulley, the second adapter is sleeved with a second fixed shaft, and the second fixed shaft is fixedly connected with the second slope plate.

5. The folding ramp board ramp according to claim 4, wherein, The first fixed shaft and the second fixed shaft are provided with pin holes at far ends from the second slope plate.

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