Centering device, lifting machine and battery replacing station

Abstract

The invention discloses a centering device, a lifting machine and a battery swapping station, and the centering device is arranged in a lifting device of a vehicle carrying platform and is arranged corresponding to a space between two wheels at the same end of a battery swapping vehicle. The centering device comprises a first push plate, a second push plate and a transmission mechanism, the first push plate and the second push plate are arranged towards the wheels on the two sides respectively, the transmission mechanism is connected with the first push plate and the second push plate, and after the battery replacement vehicle is parked on the vehicle clamping channel, the first push plate and the second push plate act synchronously through the transmission mechanism. Therefore, the left side wheel or the right side wheel of the battery changing vehicle is pushed so that the position of the battery changing vehicle can be centered. The centering device is arranged in the lifting machine and corresponds to the space between the two wheels at the same end of the battery replacing vehicle, the space of a lane clamping way is fully utilized, the structural layout is optimized, the traveling track of the battery replacing vehicle is not limited, traveling of the battery replacing vehicle is facilitated, a first push plate and a second push plate are synchronously driven through a transmission mechanism, and the driving efficiency is improved. Therefore, the position of the battery changing vehicle can be quickly centered.

Description

Technical Field

[0001] The present invention relates to an alignment device, a lift and a battery swapping station. Background Art

[0002] Electric vehicles have the advantages of zero emissions, low noise, and being very economical in operation and maintenance, and are increasingly favored by users. The energy used by electric vehicles is the electric energy provided by the power battery pack carried by themselves. After the electric energy of the electric vehicle is used up, it needs to be charged. Due to the limitations of existing battery technology and charging technology, it takes a long time to fully charge an electric vehicle, which is not as simple and fast as directly refueling a fuel vehicle. Therefore, in order to reduce the waiting time of users, replacing the battery when the electric energy of the electric vehicle is almost exhausted is an effective means. In order to facilitate the replacement of the battery of the electric vehicle and meet the battery swapping needs of the electric vehicle, it is necessary to build a battery swapping station. With the rapid popularization of electric vehicles, more battery swapping stations need to be built to meet the demand.

[0003] In existing battery swapping stations, in order to perform the disassembly or installation operation on the battery installed at the bottom of the electric vehicle, a lift is generally set to lift the electric vehicle to a certain height to reserve enough space for the battery swapping trolley to enter and exit the bottom of the vehicle and perform the disassembly and installation operations. Since most electric vehicles are driven by the driver to the area corresponding to the lift, the parking positions of different vehicles will inevitably be different, which is not convenient for the battery swapping trolley to perform the battery swapping operation. Therefore, the vehicle position can be adjusted in advance. In the prior art, a pushing mechanism is provided in the outer area of the lift to push the wheels of the vehicle from the outside to adjust the position of the vehicle in the longitudinal direction of the vehicle body to the centered state, so as to facilitate the battery swapping trolley to enter and exit the bottom of the vehicle between the front and rear wheels of the vehicle. However, this pushing mechanism is located outside the wheels, which limits the driving trajectory of the vehicle and is not convenient for driving. Moreover, most of this structure is realized by the cooperation of a servo motor and a ball screw. The installation and maintenance costs of this pushing mechanism are very high and are not economical at all. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an alignment device, a lift and a battery swapping station to overcome the defect that the alignment device in the prior art is arranged outside the vehicle and is not convenient for driving.

[0005] The present invention solves the above technical problem through the following technical solutions:

[0006] An alignment device is arranged on a vehicle-carrying platform and is used for centering and adjusting the position of a battery swapping vehicle. The alignment device is arranged in a lifting device of the vehicle-carrying platform and is correspondingly arranged in the space between two wheels at the same end of the battery swapping vehicle.

[0007] The centering device includes a first push plate and a second push plate respectively arranged facing the wheels on both sides, and a transmission mechanism respectively connecting the first push plate and the second push plate.

[0008] After the battery swapping vehicle is parked on the clamping lane, the first push plate and the second push plate are synchronously actuated through the transmission mechanism, so as to push against the left wheel or the right wheel of the battery swapping vehicle to achieve centering of the position of the battery swapping vehicle.

[0009] In this solution, the centering device is arranged in the lift and correspondingly arranged in the space between the two wheels at the same end of the battery swapping vehicle, making full use of the space of the clamping lane, optimizing the structural layout, not restricting the driving track of the battery swapping vehicle, facilitating the driving of the battery swapping vehicle, and the first push plate and the second push plate are respectively arranged corresponding to the wheels on both sides of the clamping lane. The first push plate and the second push plate are synchronously driven through the transmission mechanism, so as to push against the left wheel and the right wheel, thereby quickly centering the position of the battery swapping vehicle and improving the centering speed.

[0010] Preferably, the transmission mechanism includes a first transmission unit, a second transmission unit and a synchronization unit.

[0011] The first transmission unit and the second transmission unit are respectively connected to the first push plate and the second push plate.

[0012] The synchronization unit includes a driving wheel and a driven wheel arranged at both ends corresponding to the moving strokes of the first transmission unit and the second transmission unit, and a synchronizing member connecting the driving wheel and the driven wheel.

[0013] The first transmission unit and the second transmission unit are respectively connected to the synchronizing member from different sides of the driving wheel to act synchronously.

[0014] In this solution, the synchronizer is connected to the driving wheel and the driven wheel. The driving wheel drives the driven wheel through the synchronizer. Both the first transmission unit and the second transmission unit are connected to the same synchronizer to realize the movement of the first push plate and the second push plate. Moreover, the synchronizer can also make the first transmission unit and the second transmission unit drive synchronously, while ensuring that the transmission amounts of the first transmission unit and the second transmission unit are the same, improving the accuracy of centering of the battery swapping vehicle and facilitating the quick centering of the battery swapping vehicle. When the driving wheel rotates, the first transmission unit and the second transmission unit move synchronously. Only the driving wheel provides power, and there is no need to set multiple power sources, which simplifies the structural arrangement. In order to make the first push plate and the second push plate move in opposite directions and drive the wheels on both sides of the clamping lane, the first transmission unit and the second transmission unit are respectively connected to different sides of the synchronizer, so as to realize the synchronous movement of the first push plate and the second push plate while making their moving directions opposite. Preferably, the synchronizer is a synchronous belt or a chain, as well as other components that can realize the synchronous movement of the first push plate and the second push plate. The driving wheel and the driven wheel can be rollers or gears.

[0015] Preferably, the first transmission unit includes a first transition plate connected to the first push plate, and a first push rod with one end hinged to the first transition plate and the other end fixedly connected to the synchronizer.

[0016] And / or, the second transmission unit includes a second transition plate connected to the second push plate, and a second push rod with one end hinged to the second transition plate and the other end fixedly connected to the synchronizer.

[0017] In this solution, the first transition plate is hinged to the first push rod to realize the flexible transmission of the first transmission unit, which is convenient for the first push rod to adaptively adjust the transmission direction during the centering process of the wheels of the battery swapping vehicle.

[0018] The second transition plate is hinged to the second push rod to realize the flexible transmission of the second transmission unit, which is convenient for the second push rod to adaptively adjust the transmission direction during the centering process of the wheels of the battery swapping vehicle.

[0019] Preferably, the centering device further includes a guiding mechanism, which is arranged parallel to the synchronizer so that the first push rod and the second push rod share the guiding mechanism.

[0020] In this solution, the guiding mechanism is used for guiding the first push rod and the second push rod, ensuring that the first push rod and the second push rod are transmitted along the direction set by the guiding mechanism, and improving the accuracy of the transmission direction. At the same time, the first push rod and the second push rod share one guiding mechanism, ensuring that the first push rod and the second push rod are respectively transmitted to both sides in the same straight line direction, improving the accuracy of synchronous action, and also simplifying the structural arrangement.

[0021] Preferably, the guiding mechanism includes a slide rail arranged along the extending directions of the first push rod and the second push rod, and a first slider and a second slider respectively arranged on the slide rail. The first push rod and the second push rod are respectively connected to the first slider and the second slider.

[0022] In this solution, with the above structure, the frictional force and driving force are reduced.

[0023] Preferably, the centering device further includes a driving mechanism, and the driving mechanism is connected to the driving wheel to transmit power.

[0024] In this solution, the driving mechanism provides a driving force through the driving wheel. The driving mechanism can be any kind of motor. Preferably, the motor is a stepping motor or a servo motor.

[0025] Preferably, the driving mechanism is a stepping motor; the centering device further includes a detection mechanism, which is arranged in the area between the first push rod and the second push rod and is used to detect the movement information of the first push rod and / or the second push rod.

[0026] In this solution, the driving mechanism is a stepping motor, which provides a driving force. The stepping motor drives the first push plate and the second push plate to move respectively through a synchronization unit to achieve the centering of the battery swapping vehicle. The detection mechanism is used to detect the movement information of the first push rod and / or the second push rod to determine the centering effect of the centering device. The solution combining the stepping motor and the detection mechanism has a lower cost than the solution using a servo motor, and the control precision is comparable, improving the economic benefit. If the movement information of the first push rod and the second push rod is the same or within a preset difference range, the centering effect of the centering device is good; if the movement information of the first push rod and the second push rod is different or not within the preset difference range, the centering effect of the centering device is poor, avoiding the situation that the first transmission unit and the second transmission unit are asynchronous when the synchronizing member fails, and improving the reliability of the centering device.

[0027] Of course, in other embodiments, the detection mechanism can also be used to detect the movement information of the first push rod or the second push rod to determine the centering effect of the centering device, and further provide data support for the driving mechanism to adjust the driving amount.

[0028] Preferably, the detection mechanism includes a first sensor and a second sensor respectively arranged facing the end faces of the first push rod and the second push rod.

[0029] In this solution, the first sensor is used to detect the movement information of the first push rod, and the second sensor is used to detect the movement information of the second push rod, avoiding the situation that the first transmission unit and the second transmission unit are asynchronous when the synchronizing member fails, and improving the reliability of the centering device.

[0030] Preferably, both the first sensor and the second sensor are ultrasonic ranging sensors or infrared ranging sensors. Ultrasonic ranging sensors are less affected by light and dust and have high reliability. Infrared ranging sensors have high measurement accuracy.

[0031] Preferably, the centering device further includes a limiting mechanism disposed at least at the end of the first push rod and / or the second push rod corresponding to the detection mechanism in the moving stroke thereof.

[0032] The limiting mechanism includes a first limiting block and a second limiting block correspondingly disposed in front of the first push rod and / or the second push rod facing the first sensor and / or the second sensor, and the first limiting block and the second limiting block are correspondingly disposed with the mounting seats of the first push rod and the second push rod.

[0033] In this solution, the first limiting block and the second limiting block are respectively used to limit the moving ranges of the first push rod and the second push rod, preventing the first push rod and the second push rod from moving out of the sliding stroke and causing damage to the wheels and the detection mechanism.

[0034] Preferably, wheel limiting mechanisms recessed downward are respectively provided at both ends of the lifting device, the first push plate and the second push plate are respectively disposed at the inner edges of the two wheel limiting mechanisms, and are movably disposed relative to the wheel limiting mechanisms.

[0035] The first push plate and the second push plate respectively include a plate piece located above the wheel limiting mechanism, a sliding seat located below the wheel limiting mechanism and used for fixing the plate piece, and a connecting plate fixed to one side of the sliding seat and extending toward the first push rod or the second push rod, and the connecting plate is connected to the plate piece, the sliding seat and the first push rod or the second push rod.

[0036] The sliding seat is movably disposed on the base of the wheel limiting mechanism through a guiding assembly composed of a optical axis and a copper sleeve.

[0037] In this solution, during battery swapping, the wheels of the battery swapping vehicle stop on the downwardly recessed wheel limiting mechanisms, and the wheel limiting mechanisms are used to limit and fix the wheels. The first push plate and the second push plate are respectively disposed at the inner edges of the two wheel limiting mechanisms and do not affect the driving of the vehicle.

[0038] The plate piece is used to contact and push the wheel. In order to reduce impact and protect the wheel, a buffer layer is usually provided on the plate piece.

[0039] The connecting plate connects and fixes the plate piece, the sliding seat and the first push rod or the second push rod. The sliding seat realizes the guiding function through the optical axis and the copper sleeve, ensuring the moving direction of the plate piece and reducing the driving force of the plate piece at the same time. The guiding assembly composed of the optical axis and the copper sleeve has high guiding accuracy, low installation cost and is easy to maintain.

[0040] Preferably, the optical axis is mounted on the base, and a copper sleeve is arranged inside the sliding seat, and the copper sleeve is sleeved and slidably arranged on the optical axis.

[0041] In this solution, with the above structure, the friction is reduced and the guiding effect is improved. Preferably, the copper sleeve is a graphite copper sleeve.

[0042] Preferably, the number of the optical axes is two, the two optical axes are arranged side by side, two copper sleeves are arranged inside the sliding seat, and the copper sleeves are arranged in one-to-one correspondence with the optical axes.

[0043] In this solution, with the above structure, the sliding seat is evenly stressed, which is convenient for the sliding seat to slide smoothly on the two optical axes.

[0044] A lifting machine, the lifting machine includes the centering device as described above.

[0045] A battery swapping station, the battery swapping station includes the lifting machine as described above.

[0046] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0047] The positive and progressive effects of the present invention are as follows: The centering device is arranged in the lifting machine and corresponds to the space between the two wheels at the same end of the battery swapping vehicle, making full use of the space of the clamping lane, optimizing the structural layout, not restricting the driving trajectory of the battery swapping vehicle, facilitating the driving of the battery swapping vehicle, and the first push plate and the second push plate are respectively arranged in one-to-one correspondence with the wheels on both sides of the clamping lane, and the first push plate and the second push plate are synchronously driven by the transmission mechanism to push against the left wheel and the right wheel, so as to quickly center the position of the battery swapping vehicle and improve the centering speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 Structural schematic diagram of a lifting device according to a preferred embodiment of the present invention Figure 1 .

[0049] Figure 2 Structural schematic diagram of a lifting device with a hidden cover according to a preferred embodiment of the present invention Figure 2 .

[0050] Figure 3 For Figure 2 The enlarged view of part A in

[0051] Figure 4 Structural schematic diagram of a lifting device with a hidden cover according to a preferred embodiment of the present invention Figure 3 .

[0052] Figure 5 ForFigure 4 Enlarged view of part B in

[0053] Figure 6 Structural schematic of the lifting device for the hidden cover plate and the drum in a preferred embodiment of the present invention Figure 4 。

[0054] Figure 7 is Figure 6 Enlarged view of part C in

[0055] Explanation of reference numerals:

[0056] First push plate 1

[0057] Second push plate 2

[0058] Plate 101

[0059] Sliding seat 102

[0060] Connecting plate 103

[0061] Guide assembly 201

[0062] Optical axis 2011

[0063] Copper bushing 2012

[0064] Transmission mechanism 3

[0065] First transmission unit 31

[0066] First transition plate 311

[0067] First push rod 312

[0068] Second transmission unit 32

[0069] Second transition plate 321

[0070] Second push rod 322

[0071] Synchronization unit 33

[0072] Driver wheel 331

[0073] Driven wheel 332

[0074] Synchronizer 333

[0075] Mounting seat 34

[0076] Guide mechanism 4

[0077] Slide rail 41

[0078] First slider 42

[0079] Second slider 43

[0080] Detection mechanism 5

[0081] The first sensor 51

[0082] The second sensor 52

[0083] The limit mechanism 6

[0084] The first limit block 61

[0085] The second limit block 62

[0086] The drive mechanism 7

[0087] The wheel limit mechanism 8

[0088] The base 801

[0089] The lifting device 100 Specific embodiments

[0090] The present invention will be more clearly and completely described below by way of examples in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the described examples thereby.

[0091] As Figures 1 - 7 shown, this embodiment discloses an alignment device which is arranged on the car-carrying platform and is used to perform alignment adjustment on the position of the battery-swapping vehicle. Specifically, the alignment device is arranged in the lifting device 100 of the car-carrying platform and is correspondingly arranged relative to the space between two wheels at the same end of the battery-swapping vehicle, so as to make full use of the space of the clamping lane, optimize the structural layout, and at the same time, it will not limit the driving trajectory of the battery-swapping vehicle and facilitate the driving of the battery-swapping vehicle. The alignment device includes a first push plate 1 and a second push plate 2 respectively arranged towards the wheels on both sides, and a transmission mechanism 3 respectively connecting the first push plate 1 and the second push plate 2. The transmission mechanism 3 respectively pushes the left wheel or the right wheel of the battery-swapping vehicle through the first push plate 1 and the second push plate 2, so as to quickly align the position of the battery-swapping vehicle and improve the alignment speed. After the battery-swapping vehicle is parked on the clamping lane, the first push plate 1 and the second push plate 2 are synchronously actuated through the transmission mechanism 3, so as to push against the left wheel or the right wheel of the battery-swapping vehicle to achieve the alignment of the position of the battery-swapping vehicle.

[0092] As Figure 2 and Figure 3As shown, the transmission mechanism 3 includes a first transmission unit 31, a second transmission unit 32, and a synchronization unit 33. The first transmission unit 31 and the second transmission unit 32 are respectively connected to the first push plate 1 and the second push plate 2. The synchronization unit 33 includes a driving wheel 331 and a driven wheel 332 arranged at both ends corresponding to the moving strokes of the first transmission unit 31 and the second transmission unit 32, and a synchronizing member 333 that links the driving wheel 331 and the driven wheel 332. The first transmission unit 31 and the second transmission unit 32 are respectively connected to the synchronizing member 333 on different sides of the driving wheel 331 to perform synchronized actions. The synchronizing member 333 is connected to the driving wheel 331 and the driven wheel 332. The driving wheel 331 drives the driven wheel 332 through the synchronizing member 333. The first transmission unit 31 and the second transmission unit 32 are both connected to the same synchronizing member 333 to realize the movement of the first push plate 1 and the second push plate 2. Moreover, the synchronizing member 333 can also enable the first transmission unit 31 and the second transmission unit 32 to be synchronously driven, while ensuring that the transmission amounts of the first transmission unit 31 and the second transmission unit 32 are the same, improving the alignment accuracy of the battery swapping vehicle and facilitating the quick alignment of the battery swapping vehicle. When the driving wheel 331 rotates, the first transmission unit 31 and the second transmission unit 32 move synchronously. Only the driving wheel 331 provides power, and there is no need to set multiple power sources, simplifying the structural arrangement. In order to make the first push plate 1 and the second push plate 2 move in opposite directions and drive the wheels on both sides of the clamping lane, the first transmission unit 31 and the second transmission unit 32 are respectively connected to different sides of the synchronizing member 333 relative to the driving wheel 331, so as to realize the synchronous movement of the first push plate 1 and the second push plate 2 while making their moving directions opposite. Preferably, the synchronizing member 333 is a synchronous belt or a chain, and other components that can realize the synchronous movement of the first push plate 1 and the second push plate 2. The driving wheel 331 and the driven wheel 332 can be rollers or gears.

[0093] As Figures 2 - 7As shown in the figure, the first transmission unit 31 includes a first transition plate 311 connected to the first push plate 1, a first push rod 312 with one end hinged to the first transition plate 311 and the other end fixedly connected to the synchronizing member 333, and / or the second transmission unit 32 includes a second transition plate 321 connected to the second push plate 2, a second push rod 322 with one end hinged to the second transition plate 321 and the other end fixedly connected to the synchronizing member 333. The first transition plate 311 is hinged to the first push rod 312 to achieve flexible transmission of the first transmission unit 31. During the wheel centering process of the battery swapping vehicle, it is convenient for the first push rod 312 to adaptively adjust the transmission direction. If the first push rod 312 is rigidly connected to the first transition plate 311, it is not convenient for the first push rod 312 to adaptively adjust the driving direction, and after long-term use, the connection between the first push rod 312 and the first transition plate 311 is likely to be damaged. The second transition plate 321 is hinged to the second push rod 322 to achieve flexible transmission of the second transmission unit 32. During the wheel centering process of the battery swapping vehicle, it is convenient for the second push rod 322 to adaptively adjust the transmission direction. If the second push rod 322 is rigidly connected to the second transition plate 321, it is not convenient for the second push rod 322 to adaptively adjust the driving direction, and after long-term use, the connection between the second push rod 322 and the second transition plate 321 is likely to be damaged.

[0094] Of course, in other embodiments, either the first transmission unit or the second transmission unit can be arbitrarily provided.

[0095] As Figure 5 shown in the figure, the centering device further includes a guiding mechanism 4. The guiding mechanism 4 is arranged in parallel with the synchronizing member 333, so that the first push rod 312 and the second push rod 322 share the guiding mechanism 4. The guiding mechanism 4 is used for guiding the first push rod 312 and the second push rod 322, ensuring that the first push rod 312 and the second push rod 322 are transmitted along the setting direction of the guiding mechanism 4, and improving the accuracy of the transmission direction. At the same time, the first push rod 312 and the second push rod 322 share a guiding mechanism 4, ensuring that the first push rod 312 and the second push rod 322 are respectively transmitted to both sides in the same straight line direction, improving the accuracy of synchronous action, and also simplifying the structural arrangement.

[0096] As Figure 5 shown in the figure, the guiding mechanism 4 includes a slide rail 41 arranged along the extending direction of the first push rod 312 and the second push rod 322, and a first slider 42 and a second slider 43 respectively arranged on the slide rail 41. The first push rod 312 and the second push rod 322 are respectively connected to the first slider 42 and the second slider 43, which is used to reduce the friction force and driving force.

[0097] In this embodiment, the first push rod 312 is hinged to the first slider 42. When the first push rod 312 moves, it is allowed to swing within a certain range so that the transmission direction of the first push rod 312 matches the centering direction of the battery swapping vehicle. If the first push rod 312 is rigidly connected to the first slider 42, the connection between the first push rod 312 and the first slider 42 is likely to be damaged after long-term use. Similarly, the second push rod 322 is hinged to the second slider 43. When the second push rod 322 moves, it is allowed to swing within a certain range so that the transmission direction of the second push rod 322 matches the centering direction of the battery swapping vehicle.

[0098] As Figure 5 shown, the centering device further includes a limiting mechanism 6 disposed at least at the end of the corresponding detection mechanism 5 in the moving stroke of the first push rod 312 and / or the second push rod 322. The limiting mechanism 6 includes a first limiting block 61 and a second limiting block 62 correspondingly disposed in front of the first push rod 312 and / or the second push rod 322 facing the first sensor 51 and / or the second sensor 52. The first limiting block 61 and the second limiting block 62 are correspondingly arranged relative to the mounting seat 34 of the first push rod 312 and the second push rod 322.

[0099] As Figure 5 shown, the first limiting block 61 and the second limiting block 62 are respectively disposed at both ends of the first slider 42 or the second slider 43 along the moving direction of the first push rod 312 or the second push rod 322. The first limiting block 61 and the second limiting block 62 are respectively used to limit the moving range of the first push rod 312 and the second push rod 322 in the moving direction, prevent the first push rod 312 and the second push rod 322 from moving out of the sliding stroke, and cause damage to the wheels and the detection mechanism 5, thereby improving safety. The distance between the first limiting block 61 and the second limiting block 62 on both sides of the first slider 42 is the sliding stroke of the first slider 42. The distance between the first limiting block 61 and the second limiting block 62 on both sides of the second slider 43 is the sliding stroke of the second slider 43.

[0100] As Figure 1 、 Figure 2 、 Figure 4 and Figure 6 shown, wheel limiting mechanisms 8 recessed downward are respectively provided at both ends of the lifting device 100. The first push plate 1 and the second push plate 2 are respectively disposed at the inner edges of the two wheel limiting mechanisms 8 and are movably disposed relative to the wheel limiting mechanisms 8. During battery swapping, the wheels of the battery swapping vehicle stop on the wheel limiting mechanisms 8 recessed downward, and the wheel limiting mechanisms 8 are used to limit and fix the wheels. The first push plate 1 and the second push plate 2 are respectively disposed at the inner edges of the two wheel limiting mechanisms 8 and do not affect the driving of the vehicle. The wheel limiting mechanism 8 is an inward concave device formed by arranging a plurality of rollers in two rows to form a V structure. To clearly show the structure of the guiding component 201, Figure 6The drum of the middle wheel limiting mechanism 8 is hidden.

[0101] As Figure 7 shown, the first push plate 1 and the second push plate 2 respectively include a plate piece 101 located above the wheel limiting mechanism 8, a sliding seat 102 located below the wheel limiting mechanism 8 and used for fixing the plate piece 101, and a connecting plate 103 fixed to one side of the sliding seat 102 and extending towards the first push rod 312 or the second push rod 322. The connecting plate 103 is connected to the plate piece 101, the sliding seat 102, and the first push rod 312 or the second push rod 322. The sliding seat 102 is movably arranged on the base 801 of the wheel limiting mechanism 8 through a guiding assembly 201 composed of a optical axis 2011 and a copper sleeve 2012. The plate piece 101 is used to contact and push the wheel. In order to reduce impact and protect the wheel, a buffer layer is usually provided on the plate piece 101. The connecting plate 103 connects and fixes the plate piece 101, the sliding seat 102, and the first push rod 312 or the second push rod 322. The sliding seat 102 realizes the guiding function through the optical axis 2011 and the copper sleeve 2012, ensuring the moving direction of the plate piece 101 and at the same time reducing the driving force of the plate piece 101. The guiding assembly 201 composed of the optical axis 2011 and the copper sleeve 2012 has high guiding accuracy, low installation cost, and is easy to maintain.

[0102] As Figure 7 shown, the optical axis 2011 is installed on the base 801, and a copper sleeve 2012 is arranged inside the sliding seat 102. The copper sleeve 2012 is sleeved on and slides on the optical axis 2011, reducing the friction force and improving the guiding effect. Preferably, the copper sleeve 2012 is a graphite copper sleeve.

[0103] As Figure 7 shown, in this embodiment, the number of the optical axes 2011 is two, the two optical axes 2011 are arranged side by side, and two copper sleeves 2012 are arranged inside the sliding seat 102. The copper sleeves 2012 are arranged in one-to-one correspondence with the optical axes 2011, so that the sliding seat 102 is evenly stressed and is convenient for the sliding seat 102 to slide smoothly on the two optical axes 2011.

[0104] As Figure 5As shown, in this embodiment, the centering device further includes a detection mechanism 5, which is arranged in the area between the first push rod 312 and the second push rod 322 and is used to detect the movement information of the first push rod 312 and / or the second push rod 322. If the movement information of the first push rod 312 and the second push rod 322 is the same or within a preset difference range, the centering effect of the centering device is good; if the movement information of the first push rod 312 and the second push rod 322 is different or not within the preset difference range, the centering effect of the centering device is poor, avoiding the situation that the first transmission unit 31 and the second transmission unit 32 are not synchronized when the synchronizing member 333 fails, and improving the reliability of the centering device. By detecting the movement information of the first push rod 312 and / or the second push rod 322, it can be used to determine the centering effect of the centering device and also provide data support for the driving mechanism 7 to adjust the driving amount, that is, the driving mechanism 7 adaptively adjusts the movement amounts of the first push rod 312 and the second push rod 322 according to the movement information of the first push rod 312 and the second push rod 322 detected by the detection mechanism 5, so as to quickly center the battery swapping vehicle.

[0105] Of course, in other embodiments, the detection mechanism 5 can also be used to detect the movement information of the first push rod 312 or the second push rod 322 to determine the centering effect of the centering device and further provide data support for the driving mechanism 7 to adjust the driving amount.

[0106] As Figure 5 shown, the detection mechanism 5 includes a first sensor 51 and a second sensor 52 respectively arranged facing the end faces of the first push rod 312 and the second push rod 322. The first sensor 51 is used to detect the movement information of the first push rod 312, and the second sensor 52 is used to detect the movement information of the second push rod 322, avoiding the situation that the first transmission unit 31 and the second transmission unit 32 are not synchronized when the synchronizing member 333 fails, and improving the reliability of the centering device. The first sensor 51 detects the distance between itself and the end face of the first push rod 312 twice, and the difference between the two detected distances is the movement amount of the first transmission unit 31. The detection principle of the second sensor 52 is the same as that of the first sensor 51.

[0107] Preferably, both the first sensor 51 and the second sensor 52 are ultrasonic ranging sensors or infrared ranging sensors. Ultrasonic ranging sensors are less affected by light and dust and have high reliability. Infrared ranging sensors have high measurement accuracy.

[0108] As Figures 2 - 7As shown in the figure, the centering device further includes a driving mechanism 7, and the driving mechanism 7 is connected to the driving wheel 331 to transmit power. The driving mechanism 7 provides driving force through the driving wheel 331 to rotate the synchronizing member 333, driving the first transmission unit 31 and the second transmission unit 32 on both sides to move towards both sides respectively, and further driving the first push plate 1 and the second push plate 2 to push against the wheels, so that the electric vehicle for battery swapping is centered. The driving mechanism 7 can be any kind of motor. Preferably, the motor is a stepper motor or a servo motor.

[0109] In this embodiment, the driving mechanism 7 is a stepper motor. The stepper motor drives the first push plate 1 and the second push plate 2 to move respectively through the synchronizing unit 33 to achieve the centering of the electric vehicle for battery swapping. The detection mechanism 5 is used to detect the movement information of the first push rod 312 and / or the second push rod 322 to determine the centering effect of the centering device. The scheme of combining the stepper motor with the detection mechanism 5 has a lower cost than the scheme using a servo motor, and the control accuracy is comparable, improving the economic benefits.

[0110] In order to facilitate processing and production and maintain the same pushing effect, in this embodiment, the first push plate 1 and the second push plate 2 have the same structure and opposite pushing directions. The first transmission unit 31 and the second transmission unit 32 have the same structure and opposite moving directions.

[0111] This embodiment also discloses a lifting machine, and the lifting machine includes the centering device as described above.

[0112] This embodiment also discloses a battery swapping station, and the battery swapping station includes the lifting machine as described above.

[0113] In the description herein, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0114] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only for illustration purposes. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A centering device is arranged on the vehicle-carrying platform and is used for centering and adjusting the position of the battery-swapping vehicle. It is characterized in that The centering device is arranged inside the lifting device of the vehicle-carrying platform and is correspondingly arranged relative to the space between two wheels at the same end of the battery-changing vehicle. The centering device includes a first push plate and a second push plate respectively arranged towards the wheels on both sides, and a transmission mechanism respectively connecting the first push plate and the second push plate. After the battery-changing vehicle is parked on the clamping lane, the first push plate and the second push plate are synchronously actuated through the transmission mechanism, so as to push against the left wheel or the right wheel of the battery-changing vehicle to center the position of the battery-changing vehicle.

2. The centering device according to claim 1, characterized in that, The transmission mechanism includes a first transmission unit, a second transmission unit and a synchronization unit. The first transmission unit and the second transmission unit are respectively connected to the first push plate and the second push plate. The synchronization unit includes a driving wheel and a driven wheel arranged at both ends corresponding to the moving strokes of the first transmission unit and the second transmission unit, and a synchronizing member connecting the driving wheel and the driven wheel. The first transmission unit and the second transmission unit are respectively connected to the synchronizing member on different sides of the driving wheel to act synchronously.

3. The centering device according to claim 2, wherein The first transmission unit includes a first transition plate connected to the first push plate, and a first push rod with one end hinged to the first transition plate and the other end fixedly connected to the synchronizing member. And / or, the second transmission unit includes a second transition plate connected to the second push plate, and a second push rod with one end hinged to the second transition plate and the other end fixedly connected to the synchronizing member.

4. The centering device according to claim 3, characterized in that, The centering device further includes a guiding mechanism, which is arranged in parallel with the synchronizing member, so that the first push rod and the second push rod share the guiding mechanism. And / or, wheel limiting mechanisms sunken downward are respectively arranged at both ends of the lifting device. The first push plate and the second push plate are respectively arranged at the inner edges of the two wheel limiting mechanisms and are movably arranged relative to the wheel limiting mechanisms. The first push plate and the second push plate respectively include a plate located above the wheel limiting mechanism, a sliding seat located below the wheel limiting mechanism and used for fixing the plate, and a connecting plate fixed to one side of the sliding seat and extending towards the first push rod or the second push rod. The connecting plate is connected to the plate, the sliding seat and the first push rod or the second push rod. The sliding seat is movably arranged on the base of the wheel limiting mechanism through a guiding component composed of a optical axis and a copper bushing. And / or, the centering device further includes a driving mechanism, which is connected to the driving wheel to transmit power.

5. The centering device according to claim 4, characterized in that, The guiding mechanism includes a slide rail arranged along the extending directions of the first push rod and the second push rod, and a first slider and a second slider respectively arranged on the slide rail. The first push rod and the second push rod are respectively connected to the first slider and the second slider. And / or, the driving mechanism is a stepping motor. The centering device further includes a detecting mechanism, which is arranged in the area between the first push rod and the second push rod and is used for detecting the moving information of the first push rod and / or the second push rod.

6. The centering device according to claim 5, characterized in that, The detection mechanism includes a first sensor and a second sensor respectively arranged facing the end faces of the first push rod and the second push rod.

7. The centering device according to claim 6, characterized in that, The centering device further includes a limiting mechanism at least arranged at the end corresponding to the detection mechanism in the moving stroke of the first push rod and / or the second push rod. The limiting mechanism includes a first limiting block and a second limiting block correspondingly arranged in front of the first sensor and / or the second sensor facing the first push rod and / or the second push rod, and the first limiting block and the second limiting block are correspondingly arranged with the mounting seats of the first push rod and the second push rod.

8. The centering device according to claim 4, characterized in that, The optical axis is installed on the base, and a copper sleeve is arranged inside the sliding seat, and the copper sleeve is sleeved and slidably arranged on the optical axis. And / or, the number of the optical axes is two, the two optical axes are arranged side by side, and two copper sleeves are arranged inside the sliding seat, and the copper sleeves are arranged in one-to-one correspondence with the optical axes.

9. A lift, characterized in that, The lift includes the centering device according to any one of claims 1-8.

10. A battery swapping station, characterized in that, The battery swapping station includes the lift according to claim 9.

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