Seamless wheelbase adjustment mechanism and lift

Abstract

The application discloses a seamless wheelbase adjusting mechanism and a lifting machine, and relates to the technical field of lifting machines. The seamless wheelbase adjusting mechanism is applied to the lifting machine. The lifting machine comprises a frame body, and the frame body is provided with a through gap at a position corresponding to a wheel of a vehicle. The seamless wheelbase adjusting mechanism comprises: a wheel bearing mechanism arranged at the gap and used for bearing the wheel; a driving mechanism used for driving the wheel bearing mechanism to move horizontally along a first direction, wherein the first direction is the length direction of the vehicle; and a following mechanism connected with the wheel bearing mechanism and moving along the first direction with the wheel bearing mechanism, and the following mechanism shields the gap between the wheel bearing mechanism and the frame body. After the vehicle finishes battery replacement, the vehicle will not be stuck due to the gap when the vehicle passes through the gap between the wheel bearing mechanism and the frame body, so that the two plates forming the gap will not be broken due to long-term impact of the wheel, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric vehicle battery replacement, and provides a seamless wheelbase adjustment mechanism and lifting machine. BACKGROUND

[0002] The battery replacement station is used for replacing the battery of the electric vehicle. After the vehicle enters the battery replacement station, the wheels are located on the lifting machine, the lifting machine controls the lifting of the vehicle to cooperate with the battery replacement equipment to replace the battery of the vehicle. The utility model discloses CN213734646U discloses a vehicle front wheel lifting platform, the longitudinal position of the vehicle front wheel is adjusted through the front wheel positioning device, the adjustment of the overall wheelbase of the vehicle can be realized, the vehicle front wheel lifting platform and the vehicle rear wheel lifting platform can adapt to more different wheelbase models of vehicles, so that the battery replacement bin can be suitable for the battery replacement operation of more different models of vehicles, thereby effectively increasing the universality of the battery replacement bin. However, when the front wheel longitudinal adjustment assembly of the front wheel positioning device moves in the longitudinal direction, a gap is generated between the front wheel longitudinal adjustment assembly and the front frame body. During long-term use, the two plates generating the gap often come into contact with the wheels of the vehicle and are locally subjected to a relatively large force, which can easily cause fatigue fracture. The gap also causes a jerky feeling during the process of the vehicle entering the front wheel longitudinal adjustment assembly from the front frame body or entering the front frame body from the front wheel longitudinal adjustment assembly, resulting in poor user experience. SUMMARY

[0003] The present application aims to solve the technical problems in the prior art that the gap between the front wheel longitudinal adjustment assembly and the front frame body causes the local fatigue of the plate, the jerky feeling during the process of the vehicle entering or exiting the vehicle front wheel lifting platform, and the poor user experience, and provides a seamless wheelbase adjustment mechanism and lifting machine.

[0004] The present application solves the above technical problems by the following technical solutions:

[0005] A seamless wheelbase adjustment mechanism applied to a lifting machine, the lifting machine comprising a frame body, the frame body being provided with a through gap at a position corresponding to the wheels of a vehicle, and the seamless wheelbase adjustment mechanism comprising:

[0006] A wheel bearing mechanism arranged at the gap, used for bearing the wheels;

[0007] A driving mechanism used for driving the wheel bearing mechanism to move horizontally along a first direction, the first direction being the length direction of the vehicle;

[0008] A follower mechanism connected with the wheel bearing mechanism and moving along the first direction with the wheel bearing mechanism, and shielding the gap between the wheel bearing mechanism and the frame body.

[0009] In the scheme, before the vehicle is powered, the wheel bearing mechanism of the lifting machine bears two wheels of the vehicle, and the wheel bearing mechanism moves horizontally under the control of the driving mechanism, so that the parking position of the wheel in the first direction is adaptively adjusted, thereby the lifting machine can adapt to vehicles with different wheelbase, and the position of the vehicle after the wheelbase adjustment can be powered by the power exchange device. The follow-up mechanism blocks the gap between the wheel bearing mechanism and the frame, so that when the vehicle leaves the lifting machine after the battery replacement is completed, the vehicle passing through the wheel bearing mechanism and the frame will not be jerked and stuck due to the gap, improving the user experience, and the two plates forming the gap will not be fatigued and broken due to long-term impact of the wheel, preventing foreign matter from falling from the gap.

[0010] Preferably, the wheel bearing mechanism comprises a mounting frame and a wheel positioning mechanism, the mounting frame has a mounting slot with an upward opening, and the wheel positioning mechanism is arranged in the mounting slot and used for positioning the wheel.

[0011] The mounting frame moves horizontally along the first direction under the driving of the driving mechanism.

[0012] The follow-up mechanism is used for blocking the gap between the mounting frame and the frame.

[0013] In the scheme, when the wheel drives to the lifting machine, the wheel positioning mechanism realizes the function of positioning the wheel. When the driving mechanism drives the mounting frame, the mounting frame moves horizontally, thereby the wheel positioning mechanism adjusts the wheelbase of the vehicle.

[0014] Preferably, the follow-up mechanism comprises an extension plate, at least one end of the mounting frame is horizontally provided with the extension plate along the first direction, and the extension plate is used for blocking the gap between the corresponding end of the mounting frame and the frame.

[0015] In the scheme, the extension plate can move with the mounting frame, thereby blocking the gap between the mounting frame and the frame, avoiding the jerk feeling caused by the wheel directly driving from the mounting slot to the frame or directly driving from the frame to the mounting slot.

[0016] Preferably, the upper surface of the extension plate is flush with the upper surface of the mounting slot.

[0017] In the scheme, when the vehicle leaves after the power exchange is completed, the wheel drives out of the wheel positioning mechanism and smoothly transitions to the upper surface of the extension plate in the mounting slot, without shaking due to the height difference between the mounting slot and the upper surface of the extension plate; similarly, when the vehicle drives into the mounting slot of the mounting frame from the frame of the lifting machine, the wheel smoothly transitions from the upper surface of the extension plate to the mounting slot, ensuring the stability of the vehicle driving.

[0018] Preferably, the extension plates are two, and the two extension plates are respectively arranged horizontally at two ends of the mounting frame along the first direction.

[0019] In this scheme, no matter whether the mounting frame is adjusted forward or backward along the first direction under the driving of the driving mechanism, the gap between the mounting frame and the frame body can be blocked by the extension plates.

[0020] Preferably, the follow-up mechanism further comprises a shielding mechanism, and the shielding mechanism comprises a shielding plate and a linkage assembly.

[0021] The shielding plate is connected with the mounting frame through the linkage assembly, and the shielding plate moves along with the mounting frame and shields the gap between the frame body and the mounting frame.

[0022] In this scheme, the shielding plate moves along with the mounting frame, so as to block the gap between the frame body and the mounting frame, and avoid the vehicle from being stuck or shaking when passing through the gap.

[0023] Preferably, the shielding plate is arranged between the frame body and the extension plate, and the shielding plate can slide relative to the frame body along the first direction.

[0024] The linkage assembly comprises a first connecting portion connected with the shielding plate, a second connecting portion connected with the mounting frame, and a linkage rod, two ends of the linkage rod respectively pass through the first connecting portion and the second connecting portion, and both ends of the linkage rod are provided with limiters, the first connecting portion and the second connecting portion are located between the two limiters, and the limiters are used to prevent the first connecting portion or the second connecting portion from being separated from the linkage rod.

[0025] In this scheme, the shielding plate moves along with the movement of the mounting frame through the linkage assembly, and a power mechanism does not need to be arranged for the follow-up mechanism, so as to reduce the cost.

[0026] Preferably, the first connecting portion is provided with a first connecting hole, the second connecting portion is provided with a second connecting hole, both ends of the linkage rod respectively pass through the first connecting hole and the second connecting hole, and the first connecting hole and the second connecting hole are in clearance fit with the circumferential outer surface of the linkage rod.

[0027] In this scheme, when the mounting frame moves a certain distance along the first direction, the shielding plate abuts against the frame body, so that the shielding plate cannot continue to move, at this time, the distance between the first connecting portion and the second connecting portion is close to each other, so that the shielding plate and the frame body do not interfere with each other.

[0028] Preferably, the shielding mechanism further comprises an elastic member, and the elastic member is arranged between the first connecting portion and the second connecting portion, and is used to provide an acting force for moving the first connecting portion and the second connecting portion away from each other.

[0029] In the scheme, the first connecting part and the second connecting part can be automatically reset under the action force of the elastic member after being compressed, further ensuring that the baffle can always block the gap between the mounting frame and the frame.

[0030] Preferably, the elastic member is a spring, the spring is sleeved on the linkage rod, two ends of the spring are respectively arranged on the first connecting part and the second connecting part, and at least one end of the spring is provided with a spring seat, and the spring seat is arranged on the linkage rod.

[0031] In the scheme, the height direction displacement degree of the elastic member is constrained by the spring seat, and the stability of the elastic member is improved.

[0032] Preferably, the spring seat is two, one spring seat is fixed on the first connecting part, and the other spring seat is fixed on the second connecting part.

[0033] Preferably, the shielding mechanism further comprises a limiting sub-mechanism, the limiting sub-mechanism is connected with the baffle, and is used for limiting the stroke range of the baffle moving along the first direction.

[0034] In the scheme, the moving distance of the baffle can be limited by the limiting sub-mechanism, so that the baffle does not extend above the mounting groove after the mounting frame moves excessively, and the baffle does not contact the wheel.

[0035] Preferably, the limiting sub-mechanism comprises a sliding block connected with the baffle and a sliding rail connected with the frame, the sliding block and the sliding rail are matched with each other, and the sliding rail is horizontally arranged on the frame along the first direction.

[0036] An end of the sliding rail is provided with a limiting part for preventing the sliding block from falling off.

[0037] In the scheme, the baffle is slidably connected with the frame through the sliding block, the stability of the baffle during movement is improved, and the sliding block is prevented from falling off from the sliding rail through the limiting part.

[0038] Preferably, the linkage assembly and the limiting sub-mechanism are four, the linkage assembly and the limiting sub-mechanism are one-to-one correspondingly arranged, and the linkage assembly and the limiting sub-mechanism are divided into four corner positions of the mounting frame.

[0039] In the scheme, along the first direction, both sides of the mounting frame are provided with shielding mechanisms, each shielding mechanism comprises a baffle, two linkage assemblies and two limiting sub-mechanisms, so as to improve the stability of the baffle during operation.

[0040] Preferably, the driving mechanism comprises a driving unit and a matching sliding groove and roller, the roller is rotatably arranged on the wheel bearing mechanism, the sliding groove is fixed on the frame, and the wheel bearing mechanism is arranged on the sliding groove;

[0041] The fixed end of the driving unit is arranged on the frame, and the driving end of the driving unit is arranged on the wheel bearing mechanism.

[0042] In the scheme, the roller and the sliding groove match each other, and the driving unit is used as an execution element to realize the movement of the wheel bearing mechanism relative to the frame in the first direction, which reduces the friction between the wheel bearing mechanism and the frame, makes the movement of the wheel bearing mechanism relative to the frame in the first direction more smooth, and improves the service life of the seamless wheelbase adjustment mechanism.

[0043] Preferably, a guide structure is arranged on the mounting bracket corresponding to the position of the sliding groove, the mounting bracket is arranged on the sliding groove through the guide structure, and the guide structure is used for limiting the sliding groove in the second direction, which is the width direction of the vehicle.

[0044] In the scheme, the guide structure plays a guiding role for the movement of the mounting bracket in the first direction, further improving the stability of the mounting bracket during movement.

[0045] Preferably, the guide structure is a through guide hole, the through guide hole penetrates the mounting bracket along the first direction, and the mounting bracket is arranged on the sliding groove through the through guide hole.

[0046] Preferably, a through hole is arranged on the mounting bracket, and the through hole penetrates the mounting bracket along the first direction;

[0047] The wheel bearing mechanism further comprises an inverted U-shaped mounting bracket, the inverted U-shaped mounting bracket partially penetrates into the through hole and is detachably connected with the mounting bracket, the roller is rotatably arranged on the inverted U-shaped mounting bracket, and the driving unit is located in the opening of the inverted U-shaped mounting bracket.

[0048] In the scheme, the through hole can relatively improve the installation height of the inverted U-shaped mounting bracket, provide installation space for the driving unit in the height direction, and prevent fallen leaves and the like from falling to the mounting bracket.

[0049] Preferably, the driving mechanism further comprises a distance detection device arranged at the sliding groove, and the distance detection device is used for detecting the displacement amount of the wheel bearing mechanism in the first direction.

[0050] In the scheme, the distance detection device is used to accurately detect the displacement amount of the wheel bearing mechanism, and the accuracy of the position detection of the wheel bearing mechanism is improved.

[0051] A lifting machine comprising the seamless wheelbase adjustment mechanism as claimed in any one of the preceding claims.

[0052] The positive progress effect of the present application is that:

[0053] In the present application, the gap between the wheel bearing mechanism and the frame is shielded by the follow-up mechanism, so that when the vehicle leaves the lifting machine after replacing the battery, the vehicle will not be jolted and stuck due to the gap, thus the two plates forming the gap will not be fatigued and broken due to long-term impact of the wheels, and the user's experience is improved. The mounting groove is provided on the mounting frame, and the wheel positioning mechanism is accommodated in the mounting groove. The wheel positioning mechanism moves as a whole in the first direction, and the positioning accuracy of the wheel positioning mechanism itself is not affected by the driving mechanism. The gap between the mounting frame and the frame is shielded in three ways: the first way is achieved by the extension plate moving with the mounting frame, the second way is achieved by using the linkage mechanism to drive the baffle based on the first way, and the third way is achieved by using the elastic member, the first connecting part, the second connecting part and the linkage rod based on the second way. The seamless wheelbase adjustment mechanism of the third way can have a larger wheelbase adjustment range in the same size of the lifting machine, so as to adapt to more vehicle models. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 The structure diagram of the lifting machine of an embodiment of the present application.

[0055] Figure 2 The side view of the lifting machine of an embodiment of the present application.

[0056] Figure 3 The enlarged view of A part of Figure 2 The enlarged view of A part of

[0057] Figure 4 The schematic diagram of the seamless wheelbase adjustment mechanism of an embodiment of the present application from one perspective.

[0058] Figure 5 The schematic diagram of the seamless wheelbase adjustment mechanism of an embodiment of the present application from another perspective.

[0059] Figure 6 The schematic diagram of the seamless wheelbase adjustment mechanism of an embodiment of the present application from the bottom perspective.

[0060] Figure 7 The schematic diagram of the seamless wheelbase adjustment mechanism of an embodiment of the present application from the front perspective.

[0061] Figure 8 The structure diagram of the mounting frame of an embodiment of the present application.

[0062] BRIEF DESCRIPTION OF DRAWINGS

[0063] Lifting machine 1, frame body 11, end plate 111, avoiding port 112, seamless wheelbase adjustment mechanism 2, wheel bearing mechanism 21, mounting rack 211, mounting groove 2111, extension plate 2112, guide structure 2113, guide hole 2114, through hole 2115, wheel positioning mechanism 212, inverted U-shaped mounting rack 213, side wing 2131, driving mechanism 22, driving unit 221, sliding groove 222, roller 223, distance detection device 224, follow-up mechanism 23, shielding mechanism 231, baffle 2311, linkage assembly 2312, first connecting part 23121, second connecting part 23122, linkage rod 23123, limiting part 23124, elastic part 23125, spring seat 23126, limiting sub-mechanism 232, sliding block 2321, sliding rail 2322, limiting part 23221 DETAILED DESCRIPTION

[0064] The present application will be further described by way of examples below, but the present application is not limited to the examples described below.

[0065] [Example 1]

[0066] The present embodiment provides a specific implementation of a seamless wheelbase adjustment mechanism 2, which is applied to a lifting machine 1. After a vehicle enters an electric vehicle battery swap station, the front wheels of the vehicle are parked on the lifting machine 1, and the rear wheels of the vehicle are parked on other lifting equipment. The lifting machine 1 and the lifting equipment can cooperate with each other to lift the vehicle. The seamless wheelbase adjustment mechanism 2 is located at the front wheels of the vehicle and can adapt to vehicles with different wheelbase through forward and backward movement, i.e., the seamless wheelbase adjustment mechanism 2 can adapt to vehicles of different models. In other embodiments, the seamless wheelbase adjustment mechanism 2 can be located at the rear wheels of the vehicle.

[0067] As shown in Figures 1-3 , the lifting machine 1 includes a frame body 11 composed of a plurality of plates and beams. The frame body 11 includes four end plates 111, which form a rectangular frame structure. The seamless wheelbase adjustment mechanism 2 is installed on the frame body 11 and lifts and lowers together with the frame body 11. The frame body 11 has two up-and-down through-avoiding ports 112 corresponding to the positions of the wheels of the vehicle, Figure 2 The end plates 111 of the frame body 11 are hidden to show the seamless wheelbase adjustment mechanism 2.

[0068] As shown in Figures 1-7 , the seamless wheelbase adjustment mechanism 2 includes a wheel bearing mechanism 21, a driving mechanism 22, and two follow-up mechanisms 23.

[0069] The wheel-bearing mechanism 21, which supports and positions the wheel, is located at the clearance opening 112 and mounted on the frame 11. Specifically, as shown... Figure 4 As shown, the wheel-bearing mechanism 21 includes a mounting bracket 211 and a wheel positioning mechanism 212. The mounting bracket 211 has an upward-facing mounting groove 2111 located at the clearance opening 112, and the mounting groove 2111 is lower than the upper surface of the frame 11. The wheel positioning mechanism 212, used for positioning the wheel in the front-rear direction, is disposed in the mounting groove 2111, and the wheel positioning mechanism 212 moves together with the mounting bracket 211. The fixed end of the drive mechanism 22 is connected to the frame 11, and the free end of the push rod of the drive mechanism 22 is connected to the mounting bracket 211.

[0070] Drive mechanism 22 is used to drive wheel-bearing mechanism 21 to move horizontally along a first direction, the first direction being the length direction of the vehicle. Figure 2 (as indicated by the double-headed arrow in the image), and along this first direction, two follower mechanisms 23 are located at both ends of the wheel-bearing mechanism 21. The follower mechanism 23 is connected to the mounting frame 211 of the wheel-bearing mechanism 21 and moves along the first direction with the wheel-bearing mechanism 21. That is, the mounting frame 211 moves horizontally along the first direction under the drive of the drive mechanism 22. The follower mechanism 23 is used to cover the gap between the mounting frame 211 and the frame 11.

[0071] The wheel-bearing mechanism 21 on the lift 1 supports the two wheels of the vehicle. Before the battery swap, the control system of the battery swapping station controls the drive mechanism 22 to move the wheel-bearing mechanism 21 in the first direction. That is, the parking position of the wheels in the first direction is adaptively adjusted. Thus, the lift 1 can adapt to vehicles with different wheelbases, and the position of the vehicle after wheelbase adjustment is available for the battery swapping equipment to perform the swap. The follow-up mechanism 23 blocks the gap between the wheel-bearing mechanism 21 and the frame 11. After the battery swap is completed, when the vehicle leaves the lift 1 and passes through the gap between the wheel-bearing mechanism 21 and the frame 11, it will not experience a jerking sensation or be stuck due to getting stuck in the gap. Therefore, the two plates forming the gap will not fatigue and break due to long-term impact from the wheels, improving the user experience.

[0072] The wheel alignment mechanism 212 includes two positioning components arranged in a V-shape with their openings facing upwards. Each positioning component includes several rollers spaced apart along the width direction of the vehicle. When the wheel travels to the lift 1, the wheel alignment mechanism 212 positions the wheel, at which point the wheel abuts against the outer surfaces of the rollers of the two positioning components. When the drive mechanism 22 drives the mounting frame 211, it causes the mounting frame 211 to move horizontally, thereby adjusting the wheelbase of the vehicle through the wheel alignment mechanism 212.

[0073] Specifically, the follow-up mechanism 23 is arranged at both ends of the wheel bearing mechanism 21 along the first direction, that is, the front end and the rear end of the mounting frame 211 are respectively provided with an extension plate 2112. In the embodiment, the follow-up mechanism 23 includes the horizontally arranged extension plate 2112, and the upper surface of the extension plate 2112 is flush with the upper surface of the mounting groove 2111, which can further reduce the bump generated when the wheel passes through. The extension plate 2112 is used to block the gap between the corresponding end of the mounting frame 211 and the frame body 11. In the embodiment, the extension plate 2112 is a flat plate. The extension plate 2112 can move with the mounting frame 211, thereby blocking the gap between the mounting frame 211 and the frame body 11, avoiding the jerk feeling caused by the wheel directly driving from the mounting groove 2111 to the frame body 11 or the wheel directly driving from the frame body 11 to the mounting groove 2111.

[0074] Embodiment 2

[0075] The embodiment provides a specific implementation of a seamless wheelbase adjustment mechanism 2, which is further optimized on the basis of the embodiment 1. The following describes the optimized parts in detail.

[0076] As shown in Figures 2-4 , the follow-up mechanism 23 further includes a shielding mechanism 231, and the shielding mechanism 231 includes a baffle 2311 and a linkage assembly 2312. The baffle 2311 is connected with the mounting frame 211 through the linkage assembly 2312, that is, the linkage assembly 2312 is installed on the mounting frame 211, and the baffle 2311 is connected with the linkage assembly 2312. The baffle 2311 moves with the mounting frame 211 in the first direction and blocks the gap between the frame body 11 and the mounting frame 211.

[0077] In the vertical direction, the baffle 2311 is arranged between the frame body 11 and the extension plate 2112, and the baffle 2311 can slide relative to the frame body 11 along the first direction, that is, the baffle 2311 can slide relative to the frame body 11 under the action of the linkage assembly 2312.

[0078] Specifically, as shown in Figures 2-6As shown, the linkage assembly 2312 includes a first connecting portion 23121 connected with the baffle 2311, a second connecting portion 23122 connected with the mounting frame 211, and a linkage rod 23123 capable of relatively sliding with respect to the first connecting portion 23121 and the second connecting portion 23122. The two ends of the linkage rod 23123 respectively pass through the first connecting portion 23121 and the second connecting portion 23122, and the two ends of the linkage rod 23123 are respectively provided with limiting members 23124, the first connecting portion 23121 and the second connecting portion 23122 are located between the two limiting members 23124, and the limiting members 23124 are used to prevent the first connecting portion 23121 or the second connecting portion 23122 from being separated from the linkage rod 23123, that is, the limiting member 23124 corresponding to the first connecting portion 23121 is used to prevent the first connecting portion 23121 from being separated from the linkage rod 23123, and the limiting member 23124 corresponding to the second connecting portion 23122 is used to prevent the second connecting portion 23122 from being separated from the linkage rod.

[0079] In this embodiment, the linkage rod 23123 is a rod-shaped structure, the first connecting portion 23121 and the second connecting portion 23122 are both plate members, the first connecting portion 23121 is fixedly connected with the baffle 2311, and the second connecting portion 23122 is fixedly connected with the mounting frame 211. In other specific embodiments, the first connecting portion 23121 and the baffle 2311 can be integrally formed, and the second connecting portion 23122 and the mounting frame 211 can also be integrally formed, which will not be described here.

[0080] Specifically, the first connecting portion 23121 is provided with a first connecting hole, the second connecting portion 23122 is provided with a second connecting hole, and the two ends of the linkage rod 23123 respectively pass through the first connecting hole and the second connecting hole, and the first connecting hole and the second connecting hole are in clearance fit with the circumferential outer surface of the linkage rod 23123.

[0081] Further, in order to automatically reset the distance between the baffle 2311 and the mounting frame 211, the shielding mechanism 231 further includes an elastic member 23125 arranged between the first connecting portion 23121 and the second connecting portion 23122, and used to provide an acting force for moving the first connecting portion 23121 and the second connecting portion 23122 away from each other.

[0082] Specifically, the elastic member 23125 is a spring, the spring is sleeved on the linkage rod 23123, two ends of the spring are respectively arranged on the first connecting portion 23121 and the second connecting portion 23122, and spring seats 23126 are arranged in the two ends of the spring. The spring seats 23126 are arranged on the linkage rod 23123, and the spring seats 23126 are welded with the first connecting portion 23121 and the second connecting portion 23122 respectively. The spring seats 23126 can move with the first connecting portion 23121 and the second connecting portion 23122 relative to the linkage rod 23123. In the embodiment, the spring is a compression spring, and the spring seats 23126 are standard parts. The spring seats 23126 constrain the displacement degree of the elastic member 23125 in the height direction, and improve the stability of the elastic member 23125.

[0083] In other specific embodiments, the spring seats 23126 can also be provided in only one, and arranged on the end surface of the first connecting portion 23121 or the second connecting portion 23122 abutting with the spring. The spring seats 23126 can also play a certain limiting role on the spring. The connection form of the spring seats 23126 and the first connecting portion 23121 or the second connecting portion 23122 is not limited to the welding in the example, and can also be the form of detachable connection such as bonding or bolt connection, buckle connection, and the like. Details are not described herein.

[0084] The elastic member 23125 is arranged to enable the first connecting portion 23121 and the second connecting portion 23122 to automatically reset under the force of the elastic member 23125 after being compressed, so as to ensure that the baffle 2311 can always block the gap between the mounting frame 211 and the frame body 11.

[0085] More preferably, in order to further improve the stability of the baffle moving along the first direction, and prevent the baffle from being inclined when the wheel presses the baffle, the shielding mechanism 231 in the embodiment has two, which are arranged on the two sides of the mounting frame 211 along the first direction. Each shielding mechanism 231 includes a baffle 2311 and two linkage assemblies 2312. Therefore, there are four linkage assemblies 2312 respectively located at the four corners of the mounting frame 211.

[0086] Taking the forward movement of the seamless wheelbase adjustment mechanism 2 to adjust the wheelbase as an example, the movement processes of the follow-up mechanism 23 at the front end and the follow-up mechanism 23 at the rear end are described respectively.

[0087] For the servo mechanism 23 arranged at the front end of the mounting rack 211, when the driving mechanism 22 drives the mounting rack 211 to move forward, the second connecting part 23122 pushes the elastic part 23125 to move forward, and drives the first connecting part 23121 and the baffle 2311 to move forward. When the end surface of the baffle 2311 abuts against the side surface of the frame body 11, but the mounting rack 211 has not reached the required position, the baffle 2311 and the first connecting part 23121 do not move, and the mounting rack 211 continues to move forward with the driving mechanism 22, the second connecting part 23122 moves towards the first connecting part 23121, and the elastic part 23125 is further compressed.

[0088] For the servo mechanism 23 arranged at the front end of the mounting rack 211, when the driving mechanism 22 drives the mounting rack 211 to move forward, the second connecting part 23122 pushes the elastic part 23125 to move forward, and drives the first connecting part 23121 and the baffle 2311 to move forward. When the end surface of the baffle 2311 abuts against the side surface of the frame body 11, but the mounting rack 211 has not reached the required position, the baffle 2311 and the first connecting part 23121 do not move, and the mounting rack 211 continues to move forward with the driving mechanism 22, the second connecting part 23122 moves towards the first connecting part 23121, and the elastic part 23125 is further compressed.

[0089]

Embodiment 3

[0090] The embodiment provides a specific implementation of a seamless wheelbase adjustment mechanism 2, which is further optimized on the basis of Embodiment 2, and the optimized parts are described in detail below.

[0091] As shown in Figures 2-6 The shielding mechanism 231 further comprises a limiting sub-mechanism 232 connected with the baffle 2311, for limiting the stroke range of the baffle 2311 moving in the first direction. The baffle 2311 is slidingly connected with the frame body 11 through the limiting sub-mechanism 232, thereby improving the stability of the baffle 2311 moving in the first direction.

[0092] Specifically, the limiting sub-mechanism 232 comprises a sliding block 2321 connected with the baffle 2311 and a sliding rail 2322 connected with the frame body 11, and the sliding block 2321 and the sliding rail 2322 cooperate with each other. The sliding rail 2322 is horizontally arranged on the frame body 11 in the first direction, and the end of the sliding rail 2322 is provided with a limiting part 23221 for preventing the sliding block 2321 from falling off.

[0093] The slide rail 2322 is in the shape of a rod, and a plurality of fixing holes are arranged at intervals in the length direction of the slide rail 2322. The slide rail 2322 is connected to the end plate 111 on the side of the frame body 11 at the fixing holes by fasteners. One end of the slide rail 2322 abuts against the end plate 111 on the corresponding side of the frame body 11, and the other end of the slide rail 2322 protrudes upward to form the limiting portion 23221.

[0094] In this embodiment, the limiting sub-mechanism 232 is four, and the limiting sub-mechanism 232 is arranged at the four corners of the mounting bracket 211, and the limiting sub-mechanism 232 and the linkage assembly 2312 are arranged one by one, that is, the linkage assembly 2312 and the limiting sub-mechanism 232 are arranged at the four corners of the mounting bracket 211.

[0095]

Embodiment 4

[0096] The embodiment provides a specific implementation of a seamless wheelbase adjustment mechanism 2, which is further optimized on the basis of any one of embodiments 1-3. The following describes the optimized parts in detail.

[0097] As shown in Figure 7 The driving mechanism 22 includes a driving unit 221 and a sliding groove 222 and a roller 223 that cooperate with each other. The roller 223 is rotatably arranged on the wheel bearing mechanism 21, the sliding groove 222 is fixed on the frame body 11, and the wheel bearing mechanism 21 is arranged on the sliding groove 222. The fixed end of the driving unit 221 is arranged on the frame body 11, and the driving end of the driving unit 221 is arranged on the wheel bearing mechanism 21. The driving end is the free end of the driving rod of the driving unit 221.

[0098] By arranging the roller 223 on the wheel bearing mechanism 21, the sliding groove 222 on the frame body 11, and the roller 223 and the sliding groove 222 cooperating with each other, and using the driving unit 221 as an execution element to realize the movement of the wheel bearing mechanism 21 relative to the frame body 11 in the first direction, the friction between the wheel bearing mechanism 21 and the frame body 11 is reduced, and the movement of the wheel bearing mechanism 21 relative to the frame body 11 in the first direction is smoother.

[0099] The mounting bracket 211 is provided with a guide structure 2113 at a position corresponding to the sliding groove 222. The mounting bracket 211 is arranged on the sliding groove 222 through the guide structure 2113. The guide structure 2113 is used to limit the sliding groove 222 in the second direction, so as to prevent the mounting bracket 211 from moving in the second direction. The second direction is the width direction of the vehicle. Specifically, the guide structure 2113 is a through guide hole 2114. The guide hole 2114 penetrates the mounting bracket 211 along the first direction (i.e., the length direction of the vehicle). The mounting bracket 211 is arranged on the sliding groove 222 through the guide hole 2114.

[0100] Furthermore, the mounting bracket 211 has a through hole 2115, which extends through the mounting bracket 21 along the first direction. The wheel bearing mechanism 21 also includes an inverted U-shaped mounting bracket 213, part of which extends into the through hole 2115 and is detachably connected to the mounting bracket 211, for example, by bolts and nuts. The roller 223 is rotatably mounted on the inverted U-shaped mounting bracket 213, and the drive unit 221 is located within the opening of the inverted U-shaped mounting bracket 213. The through hole 2115 allows the mounting height of the inverted U-shaped mounting bracket 213 to be relatively increased, providing mounting space for the drive unit 221 and preventing fallen leaves and other debris from falling below the mounting bracket 211.

[0101] In this embodiment, the through hole 2115 and the guide structure 2113 together form a through opening, and the inverted U-shaped mounting bracket 211 and the slide groove 222 are both located in the through opening.

[0102] In this embodiment, the chute 222 is made of channel steel, and the roller 223 is made of tapered wheel. There are two chute 222s and four rollers 223. The opening directions of the two chute 222s are opposite to each other, and the rollers 223 are arranged in pairs. Each group of rollers 223 is located in the same chute 222. The drive unit 221 is a hydraulic cylinder. The hydraulic cylinder can bear a large load and is used as the actuator to drive the wheel bearing mechanism 21 to move, which can accurately control the running accuracy of the wheel bearing mechanism 21.

[0103] Specifically, two rollers 223 are installed on the two side wings 2131 of the inverted U-shaped mounting bracket 213. Correspondingly, a sliding groove 222 is provided next to each of the two side wings 2131 of the inverted U-shaped mounting bracket 213, and the rollers 223 are tactilely connected to the sliding grooves 222.

[0104]

Example 5

[0105] This embodiment provides a specific implementation of a seamless wheelbase adjustment mechanism 2, which is a further optimization based on embodiment 4. The optimization is described in detail below.

[0106] like Figure 7 As shown, a distance detection device 224 is located at the slide groove 222. The distance detection device 224 is used to detect the displacement of the wheel bearing mechanism 21 in the first direction. The distance detection device 224 is mounted on the slide groove 222 and located on one side of the slide groove 222. In this embodiment, the distance detection device 224 is an electronic ruler. The fixed end of the electronic ruler is fixedly mounted on the slide groove 222, and the detection end of the electronic ruler is mounted on the mounting frame 211. When the mounting frame 211 moves, the detection end of the electronic ruler moves accordingly, thereby measuring the displacement of the mounting frame 211.

[0107] The displacement amount of the mounting frame 211 is accurately detected by the distance detecting device 224, thereby improving the accuracy of the detection of the moving position of the mounting frame 211.

[0108] In other embodiments, the distance detecting device 224 can also be arranged on the frame body 11, which will not be described herein.

[0109]

Example 6

[0110] As shown in Figure 1 , 2 A lifting machine 1 employing the seamless wheelbase adjusting mechanism 2 according to any of the above embodiments.

[0111] Although the specific embodiments of the present application have been described above, those skilled in the art will understand that these are merely illustrative, and the scope of protection of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the scope of protection of the present application.

Claims

1. A seamless wheelbase adjustment mechanism, applied to a lift, the lift comprising a frame, wherein the frame has a through clearance opening at the position corresponding to the vehicle's wheels, characterized in that, The seamless wheelbase adjustment mechanism comprises: a wheel bearing mechanism arranged at the avoiding opening for bearing a wheel; a driving mechanism for driving the wheel bearing mechanism to move horizontally along a first direction, the first direction being a length direction of the vehicle; a following mechanism connected with the wheel bearing mechanism and moving along the first direction with the wheel bearing mechanism and covering the gap between the wheel bearing mechanism and the frame; the wheel bearing mechanism comprises a mounting rack and a wheel positioning mechanism, the mounting rack has an upwardly open mounting slot, and the wheel positioning mechanism is arranged in the mounting slot and used for positioning the wheel; the mounting rack moves horizontally along the first direction under the driving of the driving mechanism; the following mechanism is used for covering the gap between the mounting rack and the frame; the following mechanism comprises an extension plate, at least one end of the mounting rack is horizontally provided with the extension plate along the first direction, and the extension plate is used for covering the gap between the corresponding end of the mounting rack and the frame; the upper surface of the extension plate is flush with the upper surface of the mounting slot; the mounting slot is lower than the upper surface of the frame.

2. The seamless wheelbase adjustment mechanism according to claim 1, wherein: the extension plate is two, and the two extension plates are horizontally arranged at two ends of the mounting rack along the first direction.

3. The seamless wheelbase adjustment mechanism according to claim 2, wherein: the following mechanism further comprises a covering mechanism, and the covering mechanism comprises a baffle and a linkage assembly; the baffle is connected with the mounting rack through the linkage assembly, and the baffle moves along the first direction with the mounting rack and covers the gap between the frame and the mounting rack.

4. The seamless wheelbase adjustment mechanism according to claim 3, wherein: the baffle is arranged between the frame and the extension plate, and the baffle can slide relative to the frame along the first direction; the linkage assembly comprises a first connecting part connected with the baffle, a second connecting part connected with the mounting rack, and a linkage rod, two ends of the linkage rod pass through the first connecting part and the second connecting part respectively, and the two ends of the linkage rod are both provided with a limiting piece, the first connecting part and the second connecting part are located between the two limiting pieces, and the limiting pieces are used for preventing the first connecting part or the second connecting part from being separated from the linkage rod.

5. The seamless wheelbase adjustment mechanism according to claim 4, wherein: the first connecting part is provided with a first connecting hole, the second connecting part is provided with a second connecting hole, the two ends of the linkage rod pass through the first connecting hole and the second connecting hole respectively, and the first connecting hole and the second connecting hole are in clearance fit with the circumferential outer surface of the linkage rod.

6. The seamless wheelbase adjustment mechanism according to claim 5, wherein: the covering mechanism further comprises an elastic piece, the elastic piece is arranged between the first connecting part and the second connecting part, and the elastic piece is used for providing an acting force for moving the first connecting part and the second connecting part away from each other.

7. The seamless wheelbase adjustment mechanism according to claim 6, wherein the elastic member is a spring, the spring is sleeved on the linkage rod, two ends of the spring are respectively abutted on the first connecting part and the second connecting part, and at least one end of the spring is provided with a spring seat.

8. The seamless wheelbase adjustment mechanism according to claim 7, wherein the spring seat is two, one of the spring seats is fixed on the first connecting part, and the other spring seat is fixed on the second connecting part.

9. The seamless wheelbase adjustment mechanism according to any one of claims 3-8, wherein the shielding mechanism further comprises a limiting sub-mechanism, the limiting sub-mechanism is connected with the baffle, and is used for limiting the stroke range of the baffle moving along the first direction.

10. The seamless wheelbase adjustment mechanism according to claim 9, wherein the limiting sub-mechanism comprises a sliding block connected with the baffle and a sliding rail connected with the frame body, the sliding block and the sliding rail are matched with each other, and the sliding rail is horizontally arranged on the frame body along the first direction.

11. The seamless wheelbase adjustment mechanism according to claim 9, wherein the linkage assembly and the limiting sub-mechanism are four, the linkage assembly and the limiting sub-mechanism are arranged in one-to-one correspondence, and the linkage assembly and the limiting sub-mechanism are arranged at four corners of the mounting frame.

12. The seamless wheelbase adjustment mechanism according to claim 1, wherein the driving mechanism comprises a driving unit and a sliding groove and a roller matched with each other, the roller is rotationally arranged on the wheel bearing mechanism, the sliding groove is fixed on the frame body, and the wheel bearing mechanism is arranged on the sliding groove.

13. The seamless wheelbase adjustment mechanism according to claim 12, wherein the mounting frame is provided with a guide structure at a position corresponding to the sliding groove, the mounting frame is arranged on the sliding groove through the guide structure, and the guide structure is used for limiting the sliding groove in a second direction, and the second direction is the width direction of the vehicle.

14. The seamless wheelbase adjustment mechanism according to claim 13, wherein the guide structure is a through guide hole, the through guide hole penetrates the mounting frame along the first direction, and the mounting frame is arranged on the sliding groove through the through guide hole.

15. The seamless wheelbase adjustment mechanism according to claim 13, wherein the mounting frame is provided with a through hole penetrating the mounting frame along the first direction, the wheel bearing mechanism further comprises an inverted U-shaped mounting frame, the inverted U-shaped mounting frame partially penetrates into the through hole and is detachably connected with the mounting frame, the roller is rotationally arranged on the inverted U-shaped mounting frame, and the driving unit is located in an opening of the inverted U-shaped mounting frame. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 16. The seamless track width adjustment mechanism of claim 12, wherein ； The driving mechanism further comprises a distance detecting device arranged at the sliding slot, the distance detecting device being used to detect the displacement amount of the wheel supporting mechanism in the first direction.

17. A lifting machine characterized by A seamless wheelbase adjustment mechanism as claimed in any one of claims 1 to 16.

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