Lifting machine and battery replacing platform comprising same

Abstract

The utility model provides a lifting machine and a battery changing platform including the same, the lifting machine comprises a platform, a hydraulic cylinder and a base, the platform is connected with the base through a shear-type mechanism, the hydraulic cylinder acts on the shear-type mechanism to drive the platform to move between an upper limit position and a lower limit position along the vertical direction, and the hydraulic cylinder acts on the shear-type mechanism to drive the platform to move between the upper limit position and the lower limit position along the vertical direction. The lifting machine further comprises a limiting mechanism, the limiting mechanism is arranged on the base, the bottom of the limiting mechanism is fixedly connected with the base, and the top of the limiting mechanism is used for making contact with the platform and limiting the platform. The height of the top of the limiting mechanism is set as follows: when the platform is in contact with the top of the limiting mechanism, the platform is higher than the lower limit position. And the top of the limiting mechanism can support the descended platform, so that the gravity of the platform is borne by the limiting mechanism, impact force generated when the battery replacing vehicle passes through the platform can be borne, and the situation that the hydraulic cylinder is damaged is avoided.

Description

Technical Field

[0001] The utility model relates to a lift and a power exchange platform comprising the lift. Background Art

[0002] In recent years, new energy vehicles have developed rapidly. Electric vehicles that rely on batteries as driving energy have the advantages of zero emissions and low noise. As the market share and frequency of use of battery-swap vehicles are increasing, lifts for battery-swap vehicles are becoming more and more popular. The lift is provided with a platform, which is used to carry the wheels of the battery-swap vehicle. A hydraulic cylinder and a base are provided under the platform. Driven by the hydraulic cylinder, the platform can lift or lower the height of the battery-swap vehicle to facilitate battery replacement. Specifically, when the hydraulic rod of the hydraulic cylinder is extended to the limit position, the platform is driven by the hydraulic cylinder to be lifted to the upper limit position; when the hydraulic rod of the hydraulic cylinder is retracted to the limit position, the platform is driven by the hydraulic cylinder to be lowered to the lower limit position. At present, when the platform is in the lower limit position, it not only needs to bear the gravity of the platform itself, but may also be subject to impact force from the vehicle when the electric vehicle passes over the platform. The magnitude of the impact force is positively correlated with the speed of the vehicle. The additional impact force will be transmitted to the hydraulic cylinder through the hydraulic rod, thereby causing the sealing ring of the hydraulic cylinder to be damaged by excessive impact force. In severe cases, it may even lead to the inability to lift the platform, which poses certain safety hazards. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect in the prior art that the hydraulic cylinder is damaged by the impact force generated when a vehicle passes by after the platform of the lift is lowered, and to provide a lift and a battery replacement platform including the same.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A lift comprises a platform, a hydraulic cylinder and a base, wherein the platform and the base are connected via a scissor mechanism, the hydraulic cylinder acts on the scissor mechanism to drive the platform to move between an upper limit position and a lower limit position in a vertical direction, the lift further comprises a limiting mechanism, the limiting mechanism is arranged on the base and the bottom of the limiting mechanism is fixedly connected to the base, the top of the limiting mechanism is used to contact and limit the platform, and the top height of the limiting mechanism is set such that when the platform contacts the top of the limiting mechanism, the platform is higher than the lower limit position.

[0006] In this solution, a limiting mechanism is provided between the platform and the base, and the top height of the limiting mechanism is higher than or equal to the lower limit position of the platform, so that the top of the limiting mechanism can support the platform after it is lowered, so that the gravity of the platform after it is lowered, which was originally borne solely by the hydraulic cylinder, is now borne by the limiting mechanism. In addition, after the platform is lowered, when a battery-swapping vehicle passes over the platform, the limiting mechanism can also bear the impact force generated by the battery-swapping vehicle passing through the platform, thereby avoiding the impact force being transmitted to the hydraulic cylinder, causing the hydraulic cylinder to exceed its load-bearing capacity and be easily damaged, thereby improving the reliability and reuse rate of the lift.

[0007] Preferably, a plurality of the limiting mechanisms are provided, and the plurality of limiting mechanisms are at least provided on the outer peripheral side of the scissor-type mechanism.

[0008] In this solution, the bearing capacity for impact force is further improved by increasing the number of limit mechanisms, and the limit mechanisms located at the corners on the outer peripheral side of the scissor-type mechanism can ensure the stability and balance of the platform after it is lowered, avoiding a series of problems caused by local tilt of the platform.

[0009] Preferably, a plurality of the limiting mechanisms are also arranged at the edge area of ​​the platform.

[0010] In this solution, a limiting mechanism is added to the edge of the platform to improve the uniformity of the force on the platform when the platform contacts the limiting mechanism, improve the stability of the platform after it descends, reduce the load of a single limiting mechanism, and increase the reuse rate of the limiting mechanism.

[0011] Preferably, the limiting mechanism comprises a limiting block, the top of the limiting block is arranged flush and the height of the top of the limiting block is higher than the height of the base.

[0012] In this solution, the platform is supported after it is lowered by the top of the limit block. The flush setting of the top of the limit block can improve the stability after contact with the platform and avoid shaking of the platform after it is lowered.

[0013] Preferably, the top heights of the limit blocks of each limit mechanism are located on the same horizontal plane.

[0014] In this solution, the top heights of the limit blocks located on the outer peripheral side of the scissor mechanism are set at the same horizontal plane to ensure the stability and balance of the top of the limit block after contacting the platform.

[0015] Preferably, the limiting mechanism further includes a buffer member, and the buffer member is used to provide a force to move the platform along the lifting direction.

[0016] In this solution, a buffer member is used to provide a force moving in the lifting direction to assist the hydraulic cylinder in lifting the platform when the platform needs to rise, thereby reducing the instantaneous pressure of the hydraulic cylinder at the beginning of lifting and the response time when the platform rises, thereby improving the use efficiency of the lift.

[0017] Preferably, a groove is formed at the top of the limiting block, the buffer member is arranged in the groove, and the height of the first end of the buffer member is higher than the height of the top of the limiting block.

[0018] In this solution, the buffer can be compressed into the groove to support the descending platform through the top height of the limit block, avoiding the buffer from solely bearing the gravity of the descending platform and the impact force of the battery-swap vehicle driving on the descending platform, thereby improving the reuse rate of the lift.

[0019] Preferably, the buffer member is at least arranged in the limit block on the peripheral side of the scissor-type mechanism.

[0020] In this solution, by setting the buffer parts on the limit blocks around the scissor mechanism, the cost is lower than the method of setting them on each limit block, and it can assist the hydraulic cylinder to lift the platform when the platform needs to rise, thereby reducing the instantaneous pressure of the hydraulic cylinder at the beginning of lifting and the response time when the platform rises.

[0021] Preferably, the first end of the buffer is arranged flush; and / or the buffer is a spring.

[0022] In this solution, by arranging the first ends of the buffers flush, it is actually ensured that the forces provided by the various buffers are consistent, avoiding the deviation of the platform during the ascent due to different forces, especially the deviation when the platform just begins to ascend. By arranging the buffers as springs, on the one hand, the manufacturing cost of the lift can be reduced, and on the other hand, compared with other structures that provide forces, springs are reusable and not easily deformed.

[0023] A battery swap platform, comprising the lift as described above.

[0024] In this solution, the battery swap platform includes the above-mentioned lift to ensure that the hydraulic cylinder of the lift is not affected by the impact force when the battery swap vehicle is traveling on the descending platform, thereby improving the reliability and reuse rate of the lift, and further ensuring the reliability and reuse rate of the battery swap platform.

[0025] The positive progressive effect of the present invention is that a limiting mechanism is arranged between the platform and the base, and the top height of the limiting mechanism is higher than or equal to the lower limit position of the platform, so that the top of the limiting mechanism can support the platform after it is lowered, so that the gravity of the platform after it is lowered, which was originally borne by the hydraulic cylinder alone, is now borne by the limiting mechanism. In addition, after the platform is lowered, when a battery-swapping vehicle passes over the platform, the limiting mechanism can also bear the impact force generated by the battery-swapping vehicle passing through the platform, thereby avoiding the impact force being transmitted to the hydraulic cylinder, causing the hydraulic cylinder to exceed its load-bearing capacity and be easily damaged, thereby improving the reliability and reuse rate of the lift. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional diagram of a lift according to a preferred embodiment of the utility model.

[0027] Figure 2 This is a positional relationship diagram of a hydraulic cylinder and a scissor mechanism in a preferred embodiment of the utility model.

[0028] Figure 3 It is a highly schematic diagram of a limiting mechanism of a preferred embodiment of the utility model.

[0029] Figure 4 This is a positional relationship diagram of a limiting mechanism and a base in a preferred embodiment of the utility model.

[0030] Figure 5 This is a positional relationship diagram of a limiting block and a buffer member in a preferred embodiment of the utility model.

[0031] Description of reference numerals:

[0032] Platform 1

[0033] Hydraulic cylinder 2

[0034] Base 3

[0035] Bottom plate 31

[0036] Baffle 32

[0037] Weight reduction hole 33

[0038] Scissor mechanism 4

[0039] Limiting mechanism 5

[0040] Limit block 51

[0041] Buffer 52

[0042] Groove 6 DETAILED DESCRIPTION

[0043] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0044] This embodiment provides a lifting machine, such as Figure 1 , Figure 2 and Figure 3 As shown, the lift includes a platform 1, a hydraulic cylinder 2 and a base 3. The platform 1 is used to carry the battery-swapping vehicle. The platform 1 is a rectangular structure and the top of the platform 1 is arranged flush. The hydraulic cylinder 2 is a hydraulic cylinder 2 that performs telescopic movement in the prior art. The hydraulic cylinder 2 is connected to the hydraulic tank of the battery-swapping platform to drive the hydraulic cylinder 2 to perform telescopic movement through the hydraulic tank. The base 3 has the same shape as the platform 1 and is located below the platform 1. The platform 1 and the base 3 are connected by a scissor mechanism 4. The base 3 is used to support structures such as the platform 1 and the scissor mechanism 4. The hydraulic cylinder 2 is arranged on the scissor mechanism 4. Through the telescopic movement of the hydraulic cylinder 2 The action is used for the scissor mechanism 4 to drive the platform 1 to move between the upper limit position and the lower limit position in the vertical direction. It should be noted that when the platform 1 is in the upper limit position, it is in the direction away from the base 3, and when the platform is in the lower limit position, it is in the direction close to the base 3. The lift in this embodiment also includes a limiting mechanism 5, which is arranged on the base 3 and the bottom of the limiting mechanism 5 is fixedly connected to the base 3. The top of the limiting mechanism 5 is used to contact and limit the platform 1. The top height of the limiting mechanism 5 is set as: when the platform 1 contacts the top of the limiting mechanism 5, the platform 1 is higher than the lower limit position.

[0045] Specifically, the base 3 has a bottom plate 31 arranged in the horizontal direction, and a baffle 32 arranged in the vertical direction. One side of the baffle 32 is connected to the edge of the bottom plate 31 and is located on the outer peripheral side of the base 3. The height of the base 3 is determined by the height of the baffle 32. The bottom of the limiting mechanism 5 is arranged on the bottom plate 31 of the base 3. The top of the limiting mechanism 5 is used to abut against the bottom of the platform 1. The top height of the limiting mechanism 5 is higher than the height of the baffle 32, that is, the top height of the limiting mechanism 5 is higher than the height of the base 3, so that when the platform 1 moves to the lower limit position, the top of the limiting mechanism 5 replaces the base 3 to abut against the bottom of the platform 1. And limit is achieved, thereby preventing the platform 1 from further moving toward the lower limit position. Compared with the way that the hydraulic cylinder 2 bears the weight of the platform 1 alone during the movement of the platform 1 toward the lower limit position, the top of the limiting mechanism 5 can support the lowered platform 1, so that the gravity of the platform after descending that was originally borne by the hydraulic cylinder 2 alone is now borne by the limiting mechanism 5, effectively avoiding damage caused by excessive pressure in the hydraulic cylinder 2, and at the same time, it can avoid damage to the base 3 that may be caused by the platform 1 further contacting with the base 3 from the lower limit position after the hydraulic cylinder 2 is damaged and loses support for the platform's gravity. In addition, after the platform 1 is lowered, when a battery-swapping vehicle passes over the platform 1, the limiting mechanism 5 can also bear the impact force generated when the battery-swapping vehicle passes through the platform 1. When the above impact force is originally borne solely by the hydraulic cylinder 2, the hydraulic cylinder 2 itself has to bear the gravity of the platform 1 in addition to the impact force. That is, when the impact force and gravity are superimposed on each other, the pressure in the hydraulic cylinder 2 will increase instantaneously and be transmitted to the hydraulic cylinder 2, causing damage to the hydraulic cylinder 2 or even failure. The limiting mechanism 5 replaces the base 3 and the hydraulic cylinder 2 to bear the above gravity and impact force, which can effectively avoid damage to the base 3 and damage caused by excessive pressure in the hydraulic cylinder 2, thereby improving the reliability and reuse rate of the lift.

[0046] In other embodiments, the top height of the limiting mechanism 5 may also be equal to the height of the base 3. It can be understood that the limiting mechanism 5 is used to support the height of the platform 1 after it is lowered, ensuring that the bottom of the platform 1 is higher than or in contact with the top of the base 3, and can also prevent the platform 1 from further descending, that is, it plays a supporting and limiting role in the process of the platform 1 moving toward the lower limit position. When the top of the limiting mechanism 5 is equal to the top height of the base 3, it can also achieve the purpose of replacing the hydraulic cylinder 2 to support the platform 1. No further details will be given here.

[0047] In this embodiment, the bottom plate 31 in the base 3 is located at the edge of the base 3 along the length and width directions, and the ends of the bottom plate 31 are connected in sequence to form a rectangular structure. In addition to the bottom plate 31 for supporting the scissor-type mechanism, the central area of ​​the rectangular structure is also formed with a weight-reducing hole 33 that penetrates the base 3. A plurality of weight-reducing holes 33 are provided. By providing the weight-reducing holes 33 to reduce the weight of the base 3 itself, the weight of the lift is also reduced accordingly, making it more convenient to install the lift in the battery exchange platform and reducing the manufacturing cost of the lift.

[0048] like Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, a plurality of limiting mechanisms 5 are provided, and the plurality of limiting mechanisms 5 are at least provided on the outer peripheral side of the scissor-type mechanism 4 .

[0049] Specifically, two bottom plates 31 for supporting the scissor mechanism 4 are relatively arranged in the width direction in the base 3, the two bottom plates 31 are vertically connected to the bottom plate 31 arranged in the length direction and are located in the central area of ​​the base 3, the first leg and the second leg of the scissor mechanism 4 are respectively connected to the two bottom plates 31 to support the scissor mechanism 4, and the limiting mechanism 5 is arranged on the bottom plate 31 arranged in the length direction and close to the bottom plate 31 for supporting the first leg and the second leg of the scissor mechanism 4. At the same time, in order to avoid interference between the limiting mechanism 5 and the scissor mechanism 4, the limiting mechanism 5 is arranged on the side of the bottom plate 31 for supporting the scissor mechanism 4 away from the scissor mechanism 4, that is, located on the outer peripheral side of the scissor mechanism 4, so that the hydraulic cylinder 2 on the scissor mechanism 4 is timely supported and limited by the limiting mechanism 5 when the supporting platform 1 moves to the lower limit position in a manner close to the scissor mechanism 4, and at the same time, the impact force is prevented from being transmitted to the hydraulic cylinder 2. In this embodiment, a plurality of limit mechanisms 5 are provided. Compared with the method of providing a single limit mechanism 5, the bearing capacity for impact force can be further improved by increasing the number of limit mechanisms 5. Preferably, four limit mechanisms 5 are provided and the four limit mechanisms 5 are respectively located at the four corners of the scissor mechanism 4. The four limit mechanisms 5 can ensure the stability and balance of the platform 1 after it is lowered, and avoid a series of problems caused by the local tilt of the platform 1.

[0050] In this embodiment, a plurality of limiting mechanisms 5 are also arranged at the edge area of ​​the platform 1 .

[0051] Specifically, in addition to being arranged on the outer peripheral side of the scissor-type mechanism 4, the limiting mechanism 5 is also arranged on the edge of the base 3 and at the edge of the corresponding platform 1. Since the platform 1 and the base 3 have the same shape, the limiting mechanism 5 arranged at the edge of the base 3 can abut against the bottom of the edge area of ​​the platform 1 when the platform 1 moves toward the lower limit position. This embodiment is illustrated by taking eight limiting mechanisms 5 as an example, but does not limit their number. Four limiting mechanisms 5 are located on the outer peripheral side of the scissor-type mechanism 4, and the other four limiting mechanisms 5 are arranged at the edge of the base 3. By adding a limiting mechanism 5 at the edge of the base 3 corresponding to the platform 1, the force uniformity of the platform 1 is improved when the platform 1 contacts the limiting mechanism 5, the stability of the platform 1 after descending is improved, the load of a single limiting mechanism 5 is reduced, and the reuse rate of the limiting mechanism 5 is improved.

[0052] Furthermore, if Figure 4 and Figure 5 As shown, the limiting mechanism 5 includes a limiting block 51 , the top of the limiting block 51 is flush with the top of the limiting block 51 and the height of the top of the limiting block 51 is higher than the height of the base 3 .

[0053] Specifically, the limit block 51 is a cylindrical structure, and the bottom of the cylindrical structure is fixedly connected to the base plate 31, which can be welded or integrally molded. The limit block 51 is made of metal, preferably metal with alloy to ensure that it can bear the gravity of the platform 1 and the additional impact force generated by the battery swap vehicle passing over the platform. The top of the limit block 51 is arranged flush in the horizontal direction, so that when the top of the limit block 51 supports the platform 1 after it is lowered, the limit block 51 with the top arranged flush can improve the stability after contacting the platform 1, thereby avoiding shaking of the platform 1 after it is lowered or partial area of ​​the platform 1 being suspended in the air.

[0054] In this embodiment, the top heights of the limiting blocks 51 of each limiting mechanism 5 are located at the same horizontal plane.

[0055] Specifically, the limit blocks 51 of each limit mechanism 5 arranged on the outer peripheral side of the scissor mechanism 4 and the top heights of the limit blocks 51 of each limit mechanism 5 arranged in the edge area of ​​the platform 1 are located at the same horizontal plane. When the platform 1 descends, the limit blocks 51 located in the above two areas can abut against the bottom of the platform 1 at the same time, so as to avoid the situation where the limit blocks 51 in one area abut against the bottom of the platform 1 while the limit blocks 51 in the other area are in a suspended state, further reducing the load of each limit block 51 and ensuring the stability and balance of the limit block 51 after the top of the limit block 51 contacts the platform 1.

[0056] In addition, in this embodiment, Figure 4 and Figure 5 As shown, the limiting mechanism 5 further includes a buffer member 52, and the buffer member 52 is used to provide a force to move the platform 1 along the lifting direction.

[0057] Specifically, in addition to the limit block 51, the limit mechanism 5 is also provided with a buffer member 52. The buffer member 52 is arranged along the direction in which the platform 1 moves toward the upper limit position, that is, the lifting direction of the platform 1. The buffer member 52 is used to apply a force to the platform 1. This force makes the platform 1 have an additional force moving along the lifting direction in addition to the thrust generated by the coordinated action of the scissor mechanism 4 and the hydraulic cylinder 2 during the movement toward the upper limit position. This force assists the hydraulic cylinder 2 to lift the platform 1 when the platform 1 needs to rise, thereby reducing the instantaneous pressure of the hydraulic cylinder 2 at the beginning of the lifting and the response time of the platform 1 when the platform 1 rises. The platform 1 rises more sensitively, thereby improving the use efficiency of the lift.

[0058] Correspondingly, a groove 6 is formed at the top of the limiting block 51 , and the buffer member 52 is disposed in the groove 6 , and a height of a first end of the buffer member 52 is higher than a height of a top of the limiting block 51 .

[0059] Specifically, the shape of the groove 6 is the same as that of the buffer 52. This embodiment uses the buffer 52 as a cylindrical structure for explanation, but does not limit its shape. The groove 6 is also a circular groove. The second end of the buffer 52 extends into the groove 6, and the first end of the buffer 52 extends out of the groove 6. The height of the first end of the buffer 52 is higher than the top height of the limit block 51. It can be understood that the buffer 52 can be compressed into the groove 6 and generate a force that causes the platform 1 to move in the lifting direction. When the platform 1 descends, the first end of the buffer 52 contacts the bottom of the platform 1 before the top of the limit block 51. Then, when the platform 1 continues to descend, the buffer 52 is compressed until it is completely retracted into the groove 6. At this time, the top of the limit block 51 contacts the bottom of the platform 1 and realizes the position limitation of the platform 1, protecting the base 3 and the hydraulic cylinder 2 from loss. When the platform 1 rises, the hydraulic cylinder 2 and the scissor mechanism 4 work together to move the platform 1 toward the upper limit position, and the buffer 52 cooperates with the hydraulic cylinder 2 and the scissor mechanism 4 to provide a function of moving the platform 1 in the lifting direction. Force is provided by setting the height of the first end of the buffer 52 to be higher than the top height of the limit block 51, so as to smoothly realize the compression of the buffer 52 and provide a force for the platform 1 to move the platform 1 in the lifting direction when the platform 1 rises, and a groove 6 is provided to accommodate the compressed buffer 52, and the platform 1 is supported by the limit block 51 to avoid continuous compression of the buffer 52 when the platform 1 descends, thereby preventing the buffer 52 from being damaged and failing, and at the same time preventing the buffer 52 from bearing the impact force of the battery-swap vehicle after the platform 1 is lowered, thereby improving the reuse rate of the lift.

[0060] In this embodiment, the buffer member 52 is at least disposed in the limiting block 51 on the four sides of the scissor mechanism.

[0061] Specifically, the buffer 52 is arranged in the four limit blocks 51 at the four corners of the outer side of the scissor mechanism 4, while the limit block 51 located in the edge area of ​​the base 3 corresponding to the platform 1 is not provided with the buffer 52. Compared with the manner in which the buffer 52 is provided on both the four limit blocks 51 at the four corners of the outer side of the scissor mechanism 4 and the limit blocks 51 at the edge area of ​​the base 3 corresponding to the platform 1, on the one hand, the manufacturing cost of the lift can be reduced. On the other hand, compared with the manner in which the buffer 52 is provided on the limit blocks 51 at the four corners of the outer side of the scissor mechanism 4 alone, the buffer 52 is closer to the mechanism for driving the platform 1 to move. On the basis that the buffer 52 can provide a force on the platform 1 along the lifting direction, by bringing it closer to the mechanism for driving the platform 1 to move, the response time when the platform 1 rises can be further reduced, thereby improving the use efficiency of the lift.

[0062] In this embodiment, the first ends of the buffer members 52 are arranged flush with each other.

[0063] Specifically, the first end of the buffer 52 is used to contact the bottom of the platform 1 before the top of the limit block 51, thereby compressing the buffer 52 into the groove 6. By arranging the first end of the buffer 52 flush in the horizontal direction, each buffer 52 is actually in contact with the bottom of the platform 1 at the same time, thereby ensuring that the forces provided by each buffer 52 are consistent, avoiding displacement of the platform 1 during the rising process caused by different forces, especially displacement when the platform 1 just starts to rise.

[0064] It should be noted that the buffer member 52 in this embodiment is a spring.

[0065] Specifically, the first end and the second end of the spring are flattened by mechanical processing to ensure the stability of the spring itself when the second end of the spring extends into the groove 6, and the stability when the first end of the spring contacts the bottom of the platform 1. By setting the buffer 52 as a spring, on the one hand, the manufacturing cost of the lift can be reduced, and on the other hand, compared with other structures that provide force, the spring is reusable and not easy to deform.

[0066] Preferably, the elastic force provided by the spring is greater than or equal to 5000N. It can be understood that 5000N refers to the sum of the elastic forces generated by multiple springs located on the outer peripheral side of the scissor mechanism 4. By setting the sum of the elastic forces generated by multiple springs to 5000N, a lifting force of 500kg is provided to the platform 1 in addition to the hydraulic cylinder 2 and the scissor mechanism 4 when the platform 1 rises.

[0067] In this embodiment, when the spring is in a natural state, that is, the bottom of the platform 1 is away from the spring and does not contact the spring, the height difference between the first end of the spring and the top surface of the base 3 is in the range of 10-15 mm. This avoids the situation where the elastic force generated by the spring after compression is insufficient or excessive. Preferably, the height difference between the first end of the spring and the top surface of the base 3 is 13 mm.

[0068] In other embodiments, the buffer 52 may also be made of nylon or other structures for providing a force, and its purpose is also to provide a force to move the platform 1 along the lifting direction after compression. This is a prior art and will not be elaborated on here.

[0069] This embodiment also provides a battery swap platform, which includes the above-mentioned lift.

[0070] Specifically, the battery exchange platform includes the above-mentioned lift, which includes a limiting mechanism 5. The limiting mechanism 5 supports and limits the platform 1 when it moves to the lower limit position to ensure that the hydraulic cylinder 2 of the lift is not affected by the impact force of the battery exchange vehicle when it travels on the descending platform, thereby improving the reliability and reuse rate of the lift, and further ensuring the reliability and reuse rate of the battery exchange platform.

[0071] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A lift, comprising a platform, a hydraulic cylinder and a base, wherein the platform and the base are connected via a scissor mechanism, the hydraulic cylinder acts on the scissor mechanism to drive the platform to move between an upper limit position and a lower limit position in a vertical direction, characterized in that: The lift also includes a limiting mechanism, which is arranged on the base and the bottom of the limiting mechanism is fixedly connected to the base, the top of the limiting mechanism is used to contact and limit the platform, and the top height of the limiting mechanism is set to: when the platform contacts the top of the limiting mechanism, the platform is higher than the lower limit position.

2. The lifting machine according to claim 1, characterized in that The limiting mechanisms are provided in plurality, and the plurality of limiting mechanisms are provided at least on the outer peripheral side of the scissor-type mechanism.

3. The lifting machine according to claim 2, characterized in that: A plurality of the limiting mechanisms are also arranged at the edge area of ​​the platform.

4. The lifting machine according to claim 2, characterized in that: The limiting mechanism comprises a limiting block, the top of which is flush with the top of the limiting block and the height of the top of the limiting block is higher than the height of the base.

5. The lifting machine according to claim 4, characterized in that The top heights of the limit blocks of each limit mechanism are located on the same horizontal plane.

6. The lifting machine according to claim 4, characterized in that: The limiting mechanism further includes a buffer member, which is used to provide a force to move the platform along a lifting direction.

7. The lifting machine according to claim 6, characterized in that A groove is formed at the top of the limiting block, the buffer component is arranged in the groove, and the height of the first end of the buffer component is higher than the height of the top of the limiting block.

8. The lifting machine according to claim 7, characterized in that The buffer member is at least arranged in the limiting block on the peripheral side of the scissor-type mechanism.

9. The lifting machine according to claim 7, characterized in that: The first end of the buffer is arranged flush; and / or the buffer is a spring.

10. A battery swap platform, characterized in that: The battery exchange platform includes a lift as described in any one of claims 1-9.

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