Underground garage lifting platform driving structure

Abstract

The utility model discloses an underground garage lifting platform driving structure which comprises a horizontal base fixedly connected to the bottom face of an underground garage and two parallel driving shafts rotationally connected to the base, the driving shafts are both arranged in the horizontal direction, the two ends of each driving shaft are both fixedly connected with a fourth chain wheel, and the fourth chain wheel is connected with a third chain wheel. A first chain wheel is arranged above each fourth chain wheel, the first chain wheels are rotationally connected with the top face of the underground garage, a lifting chain is wound between each fourth chain wheel and the corresponding first chain wheel, and the lifting chains are fixedly connected with the corresponding supporting arms at the bottom of the lifting platform. The driving shafts are fixedly connected with fifth chain wheels beside the fourth chain wheels, a synchronous chain is in transmission connection between the fifth chain wheels at the same ends of the two driving shafts, and a driving unit in transmission connection with the driving shafts is arranged on the base.

Description

TECHNICAL FIELD

[0001] The utility model relates to underground garage technical field especially relates to a kind of underground garage lifting platform driving structure. BACKGROUND

[0002] With the high-speed development of economy and the increasing improvement of people's material living standard, car has gradually popularized, and it is more and more important to people's life, and an important problem following is parking difficulty.

[0003] With the gradual increase of automobile ownership, to reduce the floor area, underground garage is a preferred solution.

[0004] The driving mode of the lifting platform of the current underground garage is usually borrowed from the existing elevator, which is to drag the steel wire rope by traction motor, and then drive the lifting platform to move up and down, thereby driving the car on the lifting platform to lift.

[0005] This driving mode borrows from the existing elevator technology, and a frame (equivalent to the car of elevator) is fixed on the lifting platform, the frame is driven to move up and down by a group of steel wire ropes, and three or four supporting arms are connected around the lifting platform, which slide in the vertical track. When the car is parked on the lifting platform, the overall center of gravity of the lifting platform and the car will usually deviate from the previous position, so as to make the lifting platform tilt, and the force between each supporting arm and the corresponding track is inconsistent, thereby causing the resistance to increase, and the stress of traction motor and steel wire rope to increase, reducing the service life of steel wire rope and traction motor.

[0006] In addition, each supporting arm is also driven by steel wire rope and corresponding traction motor, which needs to ensure that each steel wire rope moves synchronously, so that the lifting platform remains horizontal when moving up and down, otherwise it will also cause the top surface of the lifting platform to tilt, or the supporting arm to be stuck on the track.

[0007] The patent with publication number CN205875850U discloses a new type of three-dimensional parking garage, which comprises a cylindrical three-dimensional parking building, a turret lifting device arranged in the middle of the cylindrical three-dimensional parking building, and a handling robot. It can improve the parking efficiency by driving two groups of lifting steel wire ropes with two traction motors to drive two elevator hoists. However, since the steel wire rope pulls the middle position of the top of the elevator hoist, when the car is parked on the elevator hoist, the center of gravity will usually deviate from the previous position, causing the resistance of the elevator hoist to increase. UTILITY MODEL CONTENTS

[0008] The utility model aims to provide a kind of underground garage lifting platform driving structure to avoid the problem that the resistance increases when lifting due to the change of center of gravity position when the lifting platform moves up and down.

[0009] To solve the above technical problems, the utility model adopts the technical scheme that:

[0010] A driving structure of an underground garage lifting platform, comprising a horizontal base fixedly connected to the bottom surface of the underground garage and two mutually parallel driving shafts rotatably connected to the base, wherein the driving shafts are arranged in a horizontal direction, and each driving shaft has a fourth sprocket fixedly connected to both ends thereof, a first sprocket is arranged above each fourth sprocket, and each first sprocket is rotatably connected to the top surface of the underground garage, a lifting chain is wound around each fourth sprocket and the corresponding first sprocket, the lifting chain is fixedly connected to the corresponding support arm at the bottom of the lifting platform, a fifth sprocket is fixedly connected to one side of each fourth sprocket of the driving shaft, and a synchronous chain is transmissionally connected between the fifth sprockets at the same end of the two driving shafts, and a driving unit is arranged on the base and transmissionally connected to the driving shafts.

[0011] Further, a third support is fixedly connected to the base, the third support is arranged between the fifth sprockets at the same end of the driving shafts, a pair of mutually meshing gears are rotatably connected to the third support, a third sprocket is fixedly connected to one side of each gear, the two third sprockets correspond to the fifth sprockets at the same end of the two driving shafts, and the synchronous chain is two chains wound around the third sprockets and the corresponding fifth sprockets.

[0012] Further, a second support is fixedly connected to the base at a position corresponding to the synchronous chain, a sixth sprocket is rotatably connected to the second support, the synchronous chain is wound around the upper part of the sixth sprocket, and a tension sprocket for tensioning the synchronous chain is arranged on the second support on one side of the sixth sprocket.

[0013] Further, the sixth sprocket is two, the synchronous chain is wound around the lower part of the tension sprocket, a vertical sliding hole is arranged between the two sixth sprockets on the side surface of the second support, a rotating shaft is slidingly connected to the second support in the sliding hole, the tension sprocket is rotatably connected to the rotating shaft, a vertical pull rod is slidingly connected to the outer end of the rotating shaft, the bottom of the pull rod is fixedly connected to the second support, a nut is screwed on the upper end of the pull rod, and the nut is pressed on the upper surface of the rotating shaft.

[0014] Further, a spring is arranged between the nut and the rotating shaft, and the spring is sleeved on the pull rod.

[0015] Further, the driving unit is a reduction motor fixedly connected to the base, there are two reduction motors, and the two reduction motors are transmissionally connected to the two driving shafts, respectively.

[0016] Further, the two reduction motors are double-output-shaft reduction motors, each driving shaft includes two coaxially arranged half shafts, and the two half shafts of the same driving shaft are respectively in transmission connection with the output shafts at the corresponding ends of the reduction motor.

[0017] Further, the second support is rotationally connected with a second sprocket above the tensioning sprocket, and the upper edge of the synchronous chain is supported on the second sprocket.

[0018] The positive effects of the utility model are as follows:

[0019] The utility model is provided with two driving shafts and four lifting chains, which can drive the four supporting arms on the lifting platform to move up and down. Each two lifting chains are driven by one driving shaft and one reduction motor, so that the power is dispersed, and the capacity of the single reduction motor is reduced. Two synchronous chains are arranged between the same ends of the two driving shafts, and the two synchronous chains are in transmission connection through the third sprocket and the gear, so as to ensure that the rotation rates of the two driving shafts are the same, and further ensure that the rotation rates of the four lifting chains are the same, so that the lifting platform can keep horizontal when moving up and down, and prevent the lifting platform from tilting due to the change of the gravity center position when moving up and down, thereby increasing the resistance. The synchronous chain and the driving shaft form a rectangle, and a large amount of space is left at the bottom of the lifting shaft of the underground garage, so that the arrangement of the water collecting well is facilitated. Since the four lifting chains are arranged, the four supporting arms at the bottom of the lifting platform are driven to move up and down, so that the lifting movement is more stable, and the reliability is also higher. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a side view of the utility model;

[0021] Figure 2 is a left view of Figure 1 ;

[0022] Figure 3 is a top view of Figure 1 ;

[0023] Figure 4 is a transmission schematic view of the synchronous chain in Figure 3 ;

[0024] Figure 5 is a use view of the utility model;

[0025] Figure 6 is a sectional view of the A-A part in Figure 1 ;

[0026] In the drawings:

[0027] 1. First sprocket; 2. Lifting chain; 3. Gear motor; 4. Second bracket; 5. Second sprocket; 6. Synchronous chain; 7. Gear; 8. Third sprocket; 9. First bracket; 10. Fourth sprocket; 11. Fifth sprocket; 12. Sixth sprocket; 13. Tensioning sprocket; 14. Drive shaft; 15. Third bracket; 16. Pull bar; 17. Rotating shaft; 18. Sliding hole; 19. Spring; 20. Nut; 21. Base; 22. Lifting platform; 23. Shim; 24. Support arm; 25. Track. Detailed Implementation

[0028] For ease of description, in the following description, the direction consistent with the drive shaft 14 is "lateral", the direction perpendicular to the drive shaft 14 in the horizontal plane is "longitudinal", and the direction consistent with the track 25 is "vertical".

[0029] Example 1

[0030] like Figures 1 to 5 As shown, the underground parking garage has four tracks 25, which are rectangularly distributed along the horizontal and vertical directions. A drive structure for an underground parking garage lifting platform includes a horizontal base 21 fixedly connected to the bottom surface of the underground parking garage and two parallel drive shafts 14 rotatably connected to the base 21. The base 21 is U-shaped and is welded from structural steel. The drive shafts 14 are all arranged laterally in the horizontal plane. At both ends of each drive shaft 14, a C-shaped first bracket 9 welded from steel plates is fixedly connected to the base 21. Each drive shaft 14's two ends are rotatably connected through the corresponding first bracket 9. Each drive shaft 14's two ends are fixedly connected to a fourth sprocket 10, which is located within the corresponding first bracket 9.

[0031] Each fourth sprocket 10 is provided with a first sprocket 1 directly above it. The first sprocket 1 is rotatably connected to the top surface of the underground garage. A lifting chain 2 is wound between each fourth sprocket 10 and the corresponding first sprocket 1. The lifting chain 2 is fixedly connected to the corresponding support arm 24 at the bottom of the lifting platform 22. A fifth sprocket 11 is fixedly connected to one side of each fourth sprocket 10. A synchronous chain 6 is connected between the fifth sprockets 11 at the same end of the two drive shafts 14. A drive unit that is connected to the drive shaft 14 is provided on the base 21.

[0032] The driving unit is a reduction motor 3 fixedly connected to the base 21, the reduction motor 3 has two, the two reduction motors 3 are both double-output-shaft reduction motors 3, each driving shaft 14 comprises two coaxially arranged half shafts, the inner ends of the two half shafts of the same driving shaft 14 are respectively connected to the output shafts of the corresponding ends of the reduction motor 3 through a shaft coupling, the outer ends of the half shafts are respectively connected to the corresponding first support 9 through a penetrating rotation connection, and the fourth sprocket 10 and the fifth sprocket 11 are respectively fixedly connected to the outer ends of the corresponding half shafts.

[0033] The support arm 24 is arranged at the bottom of the lifting platform 22 of the underground garage, when the two reduction motors 3 rotate, the four fourth sprockets 10 are driven to rotate through the two driving shafts 14, so that the four lifting chains 2 are driven to rotate, and the outer ends of the four support arms 24 are fixedly connected to the same side of the four lifting chains 2 moving in the same direction. Therefore, when the two reduction motors 3 operate, the four support arms 24 are driven to move vertically along the four tracks 25, and then the lifting platform 22 is driven to move up and down.

[0034] Since the two driving shafts 14 are connected through the fifth sprocket 11 and the synchronous chain 6, the angular velocities of the four fifth sprockets 11 and the four fourth sprockets 10 during rotation can be ensured to be the same, the movement speed of the four lifting chains 2 is the same, the four support arms 24 are synchronously lifted, the phenomenon of jamming is prevented due to the asynchronous movement of the four support arms 24, and accidents caused by the tilting of the lifting platform 22 are avoided.

[0035] Embodiment 2

[0036] The difference between this embodiment and embodiment 1 is that:

[0037] The base 21 is fixedly connected with door-shaped third supports 15, the third supports 15 have two, the two third supports 15 are arranged between the two fifth sprockets 11 at the same end of the driving shaft 14, a pair of intermeshing gears 7 are rotatably connected in each third support 15, a third sprocket 8 is fixedly connected to one side of each gear 7, the two third sprockets 8 correspond to the fifth sprockets 11 at the same end of the two driving shafts 14, and the synchronous chain 6 is two chains respectively wound around the third sprocket 8 and the corresponding fifth sprocket 11.

[0038] The inner side of the lifting chain 2 is fixedly connected with the corresponding support arm 24. In the working process of the utility model, the two reduction motors 3 drive the two driving shafts 14 to rotate reversely, under the meshing effect of the two gears 7, the two synchronous chains 6 rotate reversely at the same speed, so as to ensure that the fifth sprocket 11 and the fourth sprocket 10 rotate reversely at the same speed, and then the inner side of the lifting chain 2 moves synchronously up and down, so that the lifting platform 22 remains horizontal during the up and down movement.

[0039] Embodiment 3

[0040] The embodiment differs from embodiment 2 in that:

[0041] The base 21 is fixedly connected with a door-shaped second support 4 at a position corresponding to each synchronous chain 6, two sixth sprockets 12 are rotatably connected in the second support 4, the lower edge of the synchronous chain 6 is wound around the upper part of the sixth sprocket 12, and a tension sprocket 13 is arranged on the second support 4 at a position below the two sixth sprockets 12.

[0042] Vertical sliding holes 18 are arranged in the two sides of the second support 4 between the two sixth sprockets 12, a rotating shaft 17 is arranged in the sliding hole 18 and slidably connected with the second support 4, the tension sprocket 13 is rotatably connected with the rotating shaft 17, vertical pull rods 16 are slidably connected at both ends of the rotating shaft 17, the bottom of the pull rod 16 is fixedly connected with a connecting plate welded on the second support 4, a nut 20 is screwed on the upper end of the pull rod 16, a gasket 23 is arranged on the pull rod 16 below the nut 20, a spring 19 is arranged between the gasket 23 and the rotating shaft 17, and the spring 19 is sleeved on the pull rod 16.

[0043] By screwing the nut 20, the tension sprocket 13 is pressed on the synchronous chain 6 under the elastic force of the spring 19, so that the synchronous chain 6 is kept in a tension state, thereby ensuring that the synchronous chain 6 always rotates at the same speed, and further ensuring that the inner side edges of the lifting chain 2 move synchronously up and down, so that the lifting platform 22 remains horizontal during up and down movement.

[0044] A second sprocket 5 is further rotatably connected in the second support 4 above the tension sprocket 13, the upper edge of the synchronous chain 6 is supported on the second sprocket 5, so as to prevent the upper edge of the synchronous chain 6 from colliding with the lower edge or the sixth sprocket 12.

[0045] The above embodiment describes the content in more detail and concretely, expresses the preferred embodiment of the utility model, and is only used for explaining the technical thought and characteristics of the utility model, and its purpose is to enable the person skilled in the art to understand the content of the utility model and to implement it, but it is not limited to the utility model, and the patent range of the utility model cannot be limited by the embodiment, that is, any equivalent change or modification made according to the spirit disclosed by the utility model, within the structure of the utility model, the local improvement of the system and the change between the subsystems, and the transformation, etc., are still within the patent range of the utility model.

Claims

1. An underground garage lift platform drive structure, characterized by, The utility model provides a kind of underground garage lifting platform, including the horizontal base (21) fixedly connected on the bottom surface of underground garage and the two parallel drive shafts (14) rotationally connected in base (21), the drive shaft (14) is arranged in horizontal direction, and the fourth sprocket (10) is fixedly connected in each drive shaft (14) both ends, and the first sprocket (1) is equipped above each fourth sprocket (10), and the first sprocket (1) is rotationally connected with the top surface of underground garage, and the lifting chain (2) is wound between each fourth sprocket (10) and corresponding first sprocket (1), and the lifting chain (2) is fixedly connected with the corresponding support arm (24) of lifting platform (22) bottom respectively, and the fifth sprocket (11) is fixedly connected with drive shaft (14) on the side of each fourth sprocket (10), and the synchronous chain (6) is transmissionally connected between fifth sprocket (11) of two drive shafts (14) same end.

2. The drive structure of an underground garage lift platform according to claim 1, wherein, The third support (15) is fixedly connected on the base (21), and the third support (15) is arranged between the fifth sprocket (11) of drive shaft (14) same end, a pair of intermeshing gear (7) is rotationally connected on the third support (15), the third sprocket (8) is fixedly connected on the side of each gear (7), and the third sprocket (8) corresponds with the fifth sprocket (11) of two drive shafts (14) same end respectively, and the synchronous chain (6) is two roots wound on the third sprocket (8) and corresponding fifth sprocket (11).

3. The drive structure of an underground garage lifting platform according to claim 1 or 2, characterized in that, The second support (4) is fixedly connected on the base (21) in the position corresponding with synchronous chain (6), and the sixth sprocket (12) is rotationally connected on the second support (4), and the synchronous chain (6) is wound on the upper portion of sixth sprocket (12), and the second support (4) is provided with the tension sprocket (13) for tensioning synchronous chain (6) on the side of sixth sprocket (12).

4. The drive structure of claim 3, wherein, The sixth sprocket (12) is two roots, the synchronous chain (6) is wound on the lower portion of tension sprocket (13), and the vertical sliding hole (18) is arranged between the two sixth sprockets (12) on the side of second support (4), the rotating shaft (17) is arranged in the sliding hole (18) and is slidably connected with the second support (4), the tension sprocket (13) is rotationally connected with the rotating shaft (17), the outer end of the rotating shaft (17) is slidably connected with the vertical pull rod (16), the bottom of the pull rod (16) is fixedly connected with the second support (4), and the nut (20) is screwed on the upper end of the pull rod (16), and the nut (20) is pressed on the upper surface of the rotating shaft (17).

5. The drive structure of claim 4, wherein, The spring (19) is arranged between the nut (20) and the rotating shaft (17), and the spring (19) is sleeved on the pull rod (16).

6. The drive structure for an underground garage lift platform according to claim 1, wherein The driving unit is a reduction motor (3) fixedly connected on the base (21), and the reduction motor (3) is two roots, and the two reduction motors (3) are transmissionally connected with the two drive shafts (14) respectively.

7. The drive structure of claim 6, wherein, The two speed reduction motors (3) are double-output-shaft speed reduction motors (3), each driving shaft (14) comprises two coaxially arranged half shafts, and the two half shafts of the same driving shaft (14) are respectively in transmission connection with the output shafts at the corresponding ends of the speed reduction motor (3).

8. The drive structure of claim 3, wherein, The second sprocket (5) is rotationally connected above the tensioning sprocket (13), and the upper edge of the synchronous chain (6) is supported on the second sprocket (5).

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