CN117902511A

CN117902511A - Portable automobile lifting mechanism, device and system

Info

Publication number: CN117902511A
Application number: CN202211241274.0A
Authority: CN
Inventors: 吴永锋
Original assignee: Guangzhou Good Idea Information Technology Co ltd
Current assignee: Guangzhou Good Idea Information Technology Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2024-04-19
Also published as: WO2024078452A1

Abstract

The invention discloses a portable automobile lifting mechanism, a device and a system, wherein the portable automobile lifting mechanism comprises a base; a moving unit fixedly arranged relative to the base; and a supporting part which can move along the vertical direction relative to the base under the drive of the moving unit, wherein the supporting part is arranged to be capable of supporting wheels of the car; wherein the base and the supporting part are arranged on the same side of the moving unit, and the base is positioned outside the supporting part. When the portable automobile lifting mechanism is used, the four groups of portable automobile lifting mechanisms are used for integrally lifting the automobile under the condition that the driving unit with the locking function drives the moving unit to drive the supporting part supporting the wheels to do lifting motion relative to the base, so that the problem of water immersion caused by accumulated water is avoided; since the base and the supporting portion are provided on the same side of the moving unit while the base is located outside the supporting portion, the operational stability of the portable automobile lifting mechanism can be ensured while maintaining the compactness of the structure of the portable automobile lifting mechanism.

Description

Portable automobile lifting mechanism, device and system

Technical Field

The invention relates to a lifting device, in particular to a portable automobile lifting mechanism, a device and a system.

Background

With the improvement of living standard of residents, more and more families purchase cars.

However, the car is not low in value as a special real estate, and if damaged, the car is a small loss for families. In daily life, the most serious damage to the car is the car damage caused by water immersion besides the collision damage. The damage caused by collision belongs to the damage caused by the collision, and can be generally avoided by paying attention to driving safety, and the damage caused by water immersion is mainly influenced by severe weather such as heavy rain and the like.

Currently, in order to solve the problem that the car is immersed in water, people generally park the car at a position with a higher altitude before a predicted storm, but the position with the higher altitude is limited after all, so that people think that the car is parked on an overhead bridge before the storm, but the action not only affects traffic safety, but also incurs administrative penalties.

It can be seen that at present, the problem of car flooding is a problem that car owners need to solve.

Disclosure of Invention

In order to solve the problem of car flooding, according to one aspect of the present invention, a portable car lifting mechanism is provided.

The portable automobile lifting mechanism comprises a base; a moving unit fixedly arranged relative to the base; and a supporting part which can move along the vertical direction relative to the base under the drive of the moving unit, wherein the supporting part is arranged to be capable of supporting wheels of the car; wherein the base and the supporting part are arranged on the same side of the moving unit, and the base is positioned outside the supporting part.

When the portable automobile lifting mechanism is used, four groups of portable automobile lifting mechanisms are needed to be used simultaneously, the relative positions of the base and the supporting parts are adjusted through the moving units so that the two parts are basically positioned on the same plane, the supporting parts are placed below wheels of the automobile, and then the driving units with locking functions can drive the moving units to drive the supporting parts supporting the wheels to perform lifting motion relative to the base, so that the automobile is lifted integrally, and the problem of water immersion caused by accumulated water is avoided; since the base and the supporting portion are provided on the same side of the moving unit while the base is located outside the supporting portion, the operational stability of the portable automobile lifting mechanism can be ensured while maintaining the compactness of the structure of the portable automobile lifting mechanism.

In some embodiments, at least one of the base and the support is configured in a "匚" style of design to ensure weight reduction of the portable automotive lift mechanism. Preferably, the openings of the '匚' shaped structure are arranged towards one side deviating from the moving unit, the base and the supporting part of the '匚' shaped structure can be inserted into the front side and the rear side of the wheels after the car is parked in place, so that when the supporting part is driven by the moving unit to do lifting motion relative to the base, the supporting part can drive the wheels to lift together, the car does not need to be operated on a placed portable car lifting mechanism, and the operation is more flexible and convenient. Preferably, at least one of the base and the supporting portion is provided with a hollow pipe body, and/or at least one of the base and the supporting portion is provided with a through hole, so that the weight reduction of the portable automobile lifting mechanism is further ensured, and the through hole provided on the supporting portion can also play a role in increasing friction force of the contact surface. In particular, the height of the base is greater than the height of the support portion to enhance the grip of the base.

In some embodiments, the support is removably coupled to the mobile unit so that the support can be removed from the mobile unit for storage when the portable automobile lift mechanism is not in use; and/or the supporting part comprises a connecting part detachably connected with the mobile unit and two contact parts connected through the connecting part and used for contacting with the wheels, and the connecting part and the contact parts jointly form a 匚 -shaped structure; and/or the base comprises a connecting pipe which is fixed relative to the mobile unit and two side pipes which are detachably connected through the connecting pipe, and the connecting pipe and the side pipes form a 匚 -shaped structure together; in particular, the distance from the side pipe to the connecting pipe is greater than the distance from the contact part to the connecting part, so that the operation stability of the portable automobile lifting mechanism is ensured.

Therefore, when the portable automobile lifting mechanism is not used, the contact part can be detached from the connecting part, and the side pipe can also be detached from the connecting pipe, so that the portable automobile lifting structure with the three-dimensional structure can form a two-dimensional structure after being detached, and is convenient to store in a trunk of a car, for example.

In some embodiments, the contact portion is threadably coupled to the connection portion; and/or the connecting pipe is connected with the side pipe in an inserting way through a spline. Therefore, the contact part and the side pipe can be detachably connected with the connecting part and the connecting pipe respectively without external tools, and the operation is convenient; the contact part is connected with the connecting part through threads, so that the stability of the formed supporting part for supporting the wheel can be ensured, and the contact part is prevented from falling off from the connecting part in the process of lifting movement of the supporting part; the connecting pipe is spliced with the side pipe through the spline, so that the connecting efficiency of the connecting pipe and the side pipe can be improved, the relative rotation of the two connected parts can be avoided, and the stability of the base is ensured.

In some embodiments, the top of the contact portion is configured in an arc shape, so that the force exerted by the contact portion on the wheel can be more uniformly distributed, and the wheel is prevented from being carved into the contact portion; preferably, the contact portion has a cylindrical tubular structure so that the contact portion connected to the connection portion is always in contact with the wheel through the arc surface, and in particular, even when the contact portion is connected to the connection portion through the screw, the arc surface contact of the wheel with the contact portion is not affected by the depth of the screw threading; and/or the connecting pipe and the side pipe are square pipes with square cross sections so as to improve the grip of the base formed by connecting the side pipe and the connecting pipe, preferably, the width of the side pipe is smaller than the height of the side pipe, and the base and the supporting part are arranged on the same side of the moving unit, so that the height of the side pipe is set to be higher than the width of the base, and the torque bearing capacity of the formed base can be improved; in particular, at least one of the connecting pipe, the side pipe, the contact portion and the connecting portion is a seamless steel pipe, so as to ensure the strength of the connecting pipe, the side pipe, the contact portion and the connecting portion.

In some embodiments, the mobile unit comprises a guide rail and a slider body that are mutually adapted; wherein the guide rail is arranged along the vertical direction; the base is relatively fixed on the guide rail; the supporting part is arranged on the sliding block main body; in particular, the guide rail is a hollow channel steel to reduce the weight of the guide rail. Further, the slider body is located in the hollow portion of the channel steel to achieve compactness of the structure; preferably, the surface of at least one of the base, the support and the guide rail is provided with a rust-resistant coating to extend the service life of the base, the support and the guide rail.

According to one aspect of the present invention, a portable automotive lifting device is provided.

The portable automobile lifting device comprises the portable automobile lifting mechanism; the device also comprises a driving unit which can drive the moving unit to drive the supporting part to move along the vertical direction and has a locking function. The driving unit drives the moving unit to drive the supporting part to move to a required position along the vertical direction and keep the supporting part locked, so that the risk of the automobile being soaked due to heavy rain and water is reduced.

In some embodiments, the driving unit includes a first screw rod pivotally disposed about an axis thereof with respect to the moving unit, the first screw rod being disposed in a direction in which the moving unit moves the supporting part; and a first nut fitted on the first screw, the first nut being provided on the moving unit, whereby even if the first screw stops rotating, since the first nut is screwed with the first screw, the first nut can be maintained at the position without being changed with time until the first screw rotates again; preferably, the first screw rod is pivotally arranged relative to the guide rail of the moving unit, the first screw rod is arranged along the extending direction of the guide rail, and the first nut is arranged on a slider main body of the moving unit, which is matched with the guide rail; further, the guide rail is hollow channel steel, and the first screw rod and the first nut are located in the hollow part of the channel steel, so that compactness of the structure is achieved.

In some embodiments, the drive unit further comprises a drive device for driving the first screw motion; the control module is used for driving the driving equipment to start and stop; wherein at least one of the drive device and the control module is detachably arranged with respect to the guide rail.

Therefore, the start and stop of the driving device can be controlled through the control module so as to control the rotation state of the first screw rod, and further the first nut which is matched with the first screw rod can be controlled as required to drive the sliding block main body to move along the extending direction of the guide rail; moreover, because the control module and the driving equipment can be removed from the guide rail, even if the portable automobile lifting mechanism is used outdoors in rainy days, the control module and the driving equipment can be removed from the guide rail, so that the control module and the driving equipment are prevented from being damaged due to rain, and meanwhile, the first nut which is matched with the first screw rod is used for lifting the sliding block main body, even if the control module and the driving equipment are removed from the guide rail, the position of the first nut on the first screw rod is not influenced, and the stability of the portable automobile lifting module for lifting an automobile is ensured.

In some embodiments, the portable automobile lifting device further comprises a cover body, wherein the cover body is provided with a first accommodating cavity and a first opening for communicating the first accommodating cavity with the outside, and the first opening is arranged at the bottom of the cover body; and a bracket of the driving unit detachably connected with the cover body; the control module is arranged on the cover body and is positioned in the first accommodating cavity; the first connecting structure of the cover body connected with the bracket is arranged on the side wall of the cover body. Because the first opening sets up in the bottom of the cover body to the cover body establish on the lateral wall of the cover body with the first connection structure of leg joint, both be convenient for the cover body with dismantle with the support, even be equipped with this automobile elevator mechanism and use in rainy day with driving module's automobile elevator mechanism moreover, the control module who sets up in first holding the chamber also is difficult for meeting water, from this, can avoid driving unit to meet the water damage and can not use because of control module. In particular, the portable automobile lifting device further comprises a power supply, wherein the power supply is connected with the cover body in an inserting mode, and the power supply is electrically connected with the control module when the power supply is connected with the cover body in an inserting mode. Thus, when the power of the power supply is exhausted, the power supply can be replaced by detaching the power supply; moreover, when the power supply and the cover body are plugged in place, the power supply can be electrically connected with the control module, and the operation is convenient. In particular, the drive device is detachably connected with the holder and/or the drive device is electrically connected with at least one of the control module and the power supply in a detachable manner. Therefore, the driving device can be prevented from being damaged due to water seepage by detaching the driving device from the bracket; further, when the driving apparatus is also detachably and electrically connected to at least one of the control module and the power supply, the speed of detachment of the driving apparatus, the control module, and the power supply can also be increased. Preferably, the cover is located above the drive means. Therefore, even if the driving device and the cover body are not detached from the bracket, the cover body can play a role in shielding rain for the driving device.

In some embodiments, the rack includes a bottom plate and a top plate connected to each other; the transmission unit of the driving unit is arranged between the bottom plate and the top plate; the driving device is detachably connected to the bottom plate and is positioned below the bottom plate; the transmission unit and the top plate are positioned in the first accommodating cavity; the bottom plate is provided with a first channel for the connection line of the driving equipment and the control module or the power supply to pass through. In this way, the transmission unit and the connection lines are protected from external disturbances during operation by the cover. In particular, the two sides of the top plate above the first channel are provided with avoiding structures so as to avoid mutual interference between the connecting line and the transmission unit while providing a path for the connecting line. Further, a third connecting structure for connecting the bottom plate with the driving device is arranged on the bottom plate below the avoidance structure, so that the driving device is connected to the bottom plate while a path is provided for the connecting line. Furthermore, the bottom plate is provided with a first positioning hole corresponding to a fourth connecting structure used for being connected with the bottom plate on the driving device besides the third connecting structure, and as three uniformly distributed parts of the two parts are generally required to be connected, a stable connecting relation can be formed, but due to the limitation of the structure, the avoidance structure is only arranged on two sides of the position, corresponding to the first channel, of the top plate, and at most, the bottom plate is provided with two third connecting structures used for being connected with the driving device. The transmission unit is a gear pair arranged between a bottom plate and a top plate, the top plate is provided with a second channel for a manual driving rod for manually driving the gear pair to rotate to pass through, and the bottom plate is provided with a second positioning hole for positioning the manual driving rod. Thus, even in the case of exhaustion of the power supply or damage of at least one of the control module and the driving device, the gear pair can be driven to work by the operator by shaking the manual driving lever under special conditions by detaching the cover from the bracket and inserting the manual driving lever through the second passage and into the second positioning hole.

In some embodiments, the slider body is pivotally connected to the first nut around the first pivot shaft, and the axis of the first pivot shaft is perpendicular to the extending direction of the guide rail, so that even if the slider body deviates from the fit clearance of the guide rail due to abrasion during processing, installation and use, the slider body can move smoothly relative to the guide rail through the pivotal movement of the slider body around the axis of the first pivot shaft, and friction between the slider body and the guide rail is reduced; preferably, the first nut and the first pivot shaft are both made of high-strength rigid materials, and the slider body is made of materials with hardness lower than that of the guide rail; further, the slider body is made of plastic or lightweight metal material, and/or at least one of the first nut and the first pivot shaft is hollow.

The first nut and the first pivot shaft are made of high-strength rigid materials so as to improve the strength of the first nut and the first pivot shaft and avoid deformation of the first nut and the first pivot shaft, so that the stability of the slider module is ensured, and preferably, high-strength and light-weight metal is adopted; generally, the guide rail is made of alloy steel, correspondingly, the slider body can be made of light metal materials such as plastics or aluminum alloy or other nonmetallic materials such as carbon fibers, preferably, high-density plastics are adopted, so that the slider body has the characteristics of high strength and light weight, and has certain tension because the hardness of the slider body is smaller than that of the guide rail, and meanwhile, the slider body is pivotally connected to the first nut, so that even if the slider module is under the condition of bearing, the slider body can not be embedded into the guide rail even if the slider body rotates relative to the first nut when moving relative to the guide rail, so that smooth movement of the slider body relative to the guide rail can be ensured. At least one of the first nut and the first pivot shaft is of a hollow structure, so that the aim of weight reduction of the first nut and the first pivot shaft can be fulfilled.

In some embodiments, the slider body has two sides facing away from each other and capable of mating with the rail to effect surface contact of the slider body with the rail; therefore, even if the slider body rotates relative to the first nut, the side surface of the slider body can be matched with the guide rail, so that the contact surface of the slider body is prevented from being deformed due to larger pressure force caused by smaller contact surface with the guide rail; moreover, as the adapting area of the slider main body and the guide rail is larger, the slider main body can be ensured to be stably adapted to the guide rail; further, the sliding block main body is at least arranged on one side of the first nut, at least two sliding block main bodies are arranged on at least one side of the first nut, and the sliding block main bodies on the side are sequentially arranged along the extending direction of the guide rail; therefore, the length of the slide block main body matched with the guide rail can be prolonged, and the first nut can move along the guide rail stably under the drive of the driving unit; moreover, as at least two slide block main bodies are arranged along the extending direction of the guide rail, the different slide block main bodies can rotate more freely relative to the first nut, and the problem that the slide block main bodies are easy to be embedded into the guide rail due to the increase of the adapting length of the slide block main bodies and the guide rail is avoided. Preferably, both sides of the first nut, which are opposite to each other, are provided with slider bodies. Thereby, the first nut can be made to move more smoothly with respect to the rail in the case where the slider body is fitted to the rail.

According to one aspect of the present invention, an automotive lift system is provided. The automobile lifting system comprises a main control module and four groups of portable automobile lifting devices; the main control module is arranged to control the start and stop of the control module. Therefore, the four groups of portable automobile lifting devices can be controlled to be started together through the main control module, or one group of portable automobile lifting devices can be controlled to be started.

Drawings

FIG. 1 is a schematic view of a portable car lifting mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the portable car lifting mechanism shown in FIG. 1;

FIG. 3 is a schematic view of the portable car lifting mechanism of FIG. 1 in a lifted position;

FIG. 4 is a schematic view showing a disassembled state of the portable automobile lifting mechanism shown in FIG. 1;

FIG. 5 is a schematic view illustrating a structure of a portable automobile lifting device according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of the portable automobile lifting device shown in FIG. 5;

FIG. 7 is a schematic view showing a disassembled state of the portable automobile lifting device shown in FIG. 5;

FIG. 8 is a schematic cross-sectional view of the portable automobile lifting device shown in FIG. 5, with the base, support and moving unit omitted;

FIG. 9 is a schematic view showing a disassembled state of the portable automobile lifting device shown in FIG. 8;

FIG. 10 is a schematic view of a slider body according to an embodiment of the present invention;

FIG. 11 is a schematic view of a slider body from another perspective as shown in FIG. 10;

FIG. 12 is a schematic cross-sectional view of the slider body of FIG. 11 along the direction A-A;

FIG. 13 is a schematic view showing a disassembled state of the slider body shown in FIG. 10;

FIG. 14 is a schematic view of a lifting system of an automobile according to an embodiment of the invention;

Reference numerals: 20. a driving unit; 21. a first nut; 22. a first screw rod; 23. a driving device; 231. a fourth connection structure; 24. a transmission unit; 25. a bracket; 251. a bottom plate; 2511. a first channel; 2512. a third connection structure; 2513. a second positioning hole; 252. a top plate; 2521. a second connection structure; 2522. an avoidance structure; 2523. a second channel; 31. a first connector; 32. a first pivot shaft; 321. an axis; 33. a slider body; 34. a guide rail; 41. a base; 411. a connecting pipe; 412. a side pipe; 413. a spline shaft; 414. spline grooves; 42. a support section; 421. a contact portion; 422. a connection part; 51. a cover body; 511. a first accommodation chamber; 512. a first opening; 513. a first connection structure; 514. a top surface; 515. a water guide groove; 52. a power supply; 61. a control module; 62. and a main control module.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," comprising, "or" includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The terms used herein are generally terms commonly used by those skilled in the art, and if not consistent with the commonly used terms, the terms herein are used.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Fig. 1 to 4 schematically show a portable car lifting mechanism according to an embodiment of the present invention.

As shown in fig. 1 to 4, the portable automobile lifting mechanism includes a base 41, a moving unit, and a supporting portion 42; wherein the moving unit is fixedly arranged relative to the base 41, and the moving unit is arranged to drive the supporting part 42 to move along the vertical direction relative to the base 41; the support portion 42 is provided so as to be able to place the wheels of the car; the base 41 and the support portion 42 are both provided on the same side of the moving unit, and the base 41 is located outside the support portion 42.

As one of the embodiments of the moving unit, as shown in fig. 2, the moving unit includes a guide rail 34 and a slider body 33 that are mutually adapted; wherein the guide rail 34 is disposed in a vertical direction; the base 41 is relatively fixed on the guide rail 34; the support portion 42 is provided on the slider body 33. The mobile unit may be implemented by other structures capable of defining the movement track of the supporting portion 42, so long as the structure capable of defining the movement track of the supporting portion 42 can be used as the mobile unit in the present invention, and the specific implementation manner of the mobile unit is not limited without special emphasis.

When the portable automobile lifting mechanism is used, four groups of portable automobile lifting mechanisms are needed to be used simultaneously, the relative positions of the base 41 and the supporting parts 42 are adjusted through the moving units so that the two are basically on the same plane, the supporting parts 42 are placed below wheels of the automobile, and then the driving unit 20 with a locking function drives the moving units to drive the supporting parts 42 supporting the wheels to perform lifting movement relative to the base 41, so that the automobile is lifted integrally, and the problem of water immersion caused by accumulated water is avoided; since the base 41 and the supporting portion 42 are provided on the same side of the moving unit, and at the same time, the base 41 is located outside the supporting portion 42, so that the operational stability of the portable automobile lifting mechanism can be ensured while maintaining the structural compactness of the portable automobile lifting mechanism.

As a preferred embodiment of the guide rail 34, as shown in fig. 1 to 4, the guide rail 34 is a hollow channel steel, so as to reduce the weight of the guide rail 34, ensure the strength of the lifting mechanism, and avoid the bending deformation of the guide rail 34 when driving the car to lift. Further, the slider body 33 is located at a hollow portion of the channel steel to achieve compactness of the structure.

As a preferred embodiment of the base 41 and the support portion 42, as shown in fig. 1, 3 and 4, at least one of the base 41 and the support portion 42 is provided with a hollow pipe body, and/or at least one of the base 41 and the support portion 42 is integrally formed or machined with a through hole, for example, only the base 41 is formed with a hollow pipe body, only the support portion 42 is formed with a hollow pipe body, or both the base 41 and the support portion 42 are formed with a hollow pipe body, or the base 41 is formed with a hollow pipe body is also integrally formed with or machined with a through hole, or the support portion 42 is also integrally formed with a through hole, or both the base 41 and the support portion 42 are integrally formed with a through hole, so as to further ensure the lightweight of the portable automobile lifting mechanism, and the through hole provided on the support portion 42 also serves to increase the friction force of the contact surface.

As another preferred embodiment of the base 41 and the supporting portion 42, as shown in fig. 1 and 2, the height of the base 41 is greater than the height of the supporting portion 42 to enhance the grip of the base 41.

As still another preferred embodiment of the base 41 and the supporting portion 42, as shown in fig. 1 to 3, at least one of the base 41 and the supporting portion 42 is provided in a "匚" type structure to ensure weight saving of the portable automobile lifting mechanism. Preferably, as shown in fig. 1 and 3, the openings of the '匚' shaped structures are all arranged towards one side away from the moving unit, the base 41 and the supporting part 42 of the '匚' shaped structures can be inserted into the front and rear sides of the wheels after the car is parked in place, so that when the supporting part 42 is driven by the moving unit to perform lifting motion relative to the base 41, the supporting part 42 can drive the wheels to lift together, the car does not need to be moved to a placed portable car lifting mechanism, and the operation is more flexible and convenient. Preferably, as shown in fig. 4, the supporting part 42 includes a connection part 422 and a contact part 421, wherein the connection part 422 is detachably connected with the moving unit, and when the moving unit includes the guide rail 34 and the slider body 33 which are adapted to each other, the connection part 422 is detachably disposed with respect to the slider body 33; the contact portion 421 is used for contacting with a wheel, the contact portion 421 is provided with two connection portions 422, and the end portions of the two connection portions 422 on the same side are detachably connected with the two ends of the connection portion 422 respectively, so that a 匚 -shaped structure is formed by the connection of the connection portion 422 and the contact portion 421; preferably, as shown in fig. 4, the base 41 includes a connection pipe 411 and a side pipe 412; wherein the connection pipe 411 is fixed relatively to the moving unit, and when the moving unit includes the guide rail 34 and the slider body 33 which are mutually adapted, the connection pipe 411 is fixedly disposed with respect to the guide rail 34, for example, the connection pipe 411 is mounted on the guide rail 34; the two side pipes 412 are provided, and the ends of the two side pipes 412 on the same side are detachably connected with the two ends of the connecting pipe 411 respectively, so that a 匚 -shaped structure is formed by the connection of the connecting pipe 411 and the side pipes 412. Thus, when the portable car lifting mechanism is not used, the contact portion 421 can be detached from the connection portion 422, and the side pipe 412 can also be detached from the connection pipe 411, so that the portable car lifting structure of the three-dimensional structure can be formed into a two-dimensional structure after detachment, so as to be stored in, for example, a trunk of a car. Further, with continued reference to fig. 4, the contact portion 421 is threadably coupled to the connection portion 422; and/or the connection pipe 411 and the side pipe 412 are connected by spline, for example, only the contact portion 421 and the connection portion 422 are connected by screw threads, or only the connection pipe 411 and the side pipe 412 are connected by spline, or the connection portion 421 and the connection portion 422 are connected by screw threads, at the same time, the connection pipe 411 and the side pipe 412 are connected by spline, for example, a spline shaft 413 is integrally formed, machined or connected on one of the connection pipe 411 and the side pipe 412, and a spline groove 414 adapted to the spline shaft 413 is integrally formed or machined on the other one. Thereby, the contact portion 421 and the side pipe 412 can be detachably connected with the connection portion 422 and the connection pipe 411, respectively, without using an external tool, and the operation is convenient; in addition, the contact portion 421 and the connection portion 422 are connected through threads, so that stability of the formed supporting portion 42 for supporting the wheel can be ensured, and falling of the contact portion 421 from the connection portion 422 in the process of lifting the supporting portion 42 is avoided; the connecting pipe 411 and the side pipe 412 are connected through the spline, so that the connecting efficiency of the connecting pipe 411 and the side pipe 412 can be improved, the relative rotation of the two connected parts can be avoided, and the stability of the base 41 is ensured. Further, as shown in fig. 1 and 2, the distance from the side tube 412 to the connecting tube 411 is greater than the distance from the contact portion 421 to the connecting portion 422, so as to ensure the stability of the operation of the portable car lifting mechanism. In particular, at least one of the connection pipe 411, the side pipe 412, the contact portion 421 and the connection portion 422 is a seamless steel pipe to secure the strength of the connection pipe 411, the side pipe 412, the contact portion 421 and the connection portion 422.

As a preferred embodiment of the contact portion 421, as shown in fig. 1 to 4, the top of the contact portion 421 is arranged in an arc shape, so that the force exerted on the wheel by the contact portion 421 can be more uniformly distributed, avoiding the wheel from being engraved into the contact portion 421. Preferably, the contact portion 421 has a cylindrical tubular structure so that the contact portion 421 connected to the connection portion 422 is always in contact with the wheel through the arc surface, and in particular, even when the contact portion 421 is connected to the connection portion 422 through the screw, the arc surface contact of the wheel with the contact portion 421 is not affected by the depth of the screw threading.

As a preferred embodiment of the connection pipe 411 and the side pipe 412, as shown in fig. 1,3 and 4, the connection pipe 411 and the side pipe 412 are square pipes having a square cross section to improve the grip of the base 41 formed by the connection of the side pipe 412 and the connection pipe 411. Preferably, the width of the side pipe 412 is smaller than the height of the side pipe 412, and since the base 41 and the supporting portion 42 are provided on the same side of the moving unit, the height of the side pipe 412 is set to be higher than the width thereof, the capability of the formed base 41 to withstand torsion can be improved

As one preferred embodiment of the support portion 42, as shown in fig. 4, the support portion 42 is detachably connected to the moving unit so that the support portion 42 can be detached from the moving unit for easy storage when the portable automobile lifting mechanism is not in use.

Preferably, at least one surface of the base 41, the support 42 and the guide rail 34 is provided with a rust-preventing coating, for example, zinc plating is performed on at least one surface of the base 41, the support 42 and the guide rail 34 to extend the service life of the base 41, the support 42 and the guide rail 34.

Fig. 5 to 13 schematically show a portable automobile lifting device according to an embodiment of the present invention.

As shown in fig. 5 to 7, the portable automobile lifting device includes a driving unit 20 and the aforementioned portable automobile lifting mechanism; wherein the driving unit 20 is provided to be able to drive the moving unit to move the supporting portion 42 in the vertical direction, and the driving unit 20 has a locking function. So that the driving unit 20 drives the moving unit to move the supporting part 42 to a required position along the vertical direction and keep locking, thereby reducing the risk of the automobile being soaked due to heavy rain and water.

As one embodiment of the driving unit 20, as shown in fig. 5 to 7, the driving unit 20 includes a first screw 22 and a first nut 21 that are mutually adapted; the first screw 22 is pivotally disposed about an axis 321 thereof relative to the moving unit, and the first screw 22 is disposed along a direction in which the moving unit drives the supporting portion 42 to move; the first nut 21 is provided on the mobile unit. Thereby, even if the first screw 22 stops rotating, since the first nut 21 is screwed with the first screw 22, the first nut 21 can be kept at this position without being changed with time until the first screw 22 rotates again. Preferably, the first screw 22 is pivotably arranged with respect to the guide rail 34 of the moving unit, and the first screw 22 is arranged along the extension direction of the guide rail 34, and the first nut 21 is arranged on the slider body 33 of the moving unit adapted to the guide rail 34. Further, the guide rail 34 is a hollow channel steel, and the first screw 22 and the first nut 21 are located in the hollow portion of the channel steel, so as to achieve compactness of the structure. Preferably, the driving unit 20 further includes a driving device 23 for driving the first screw 22 to move, and the driving device 23 is a rotation motor, by way of example; a control module 61 for driving the driving device 23 to start and stop; wherein at least one of the drive device 23 and the control module 61 is detachably arranged with respect to the guide rail 34. Thereby, the start and stop of the driving device 23 can be controlled by the control module 61 to control the rotation state of the first screw rod 22, and further the first nut 21 which is adapted to the first screw rod 22 can be controlled to drive the slider main body 33 to move along the extending direction of the guide rail 34 according to the requirement; moreover, since the control module 61 and the driving device 23 can be removed from the guide rail 34, even if the portable automobile lifting mechanism is used outdoors in a rainy day, the control module 61 and the driving device 23 can be removed from the guide rail 34, so that the control module 61 and the driving device 23 can be prevented from being damaged due to rain, and meanwhile, since the first nut 21 which is matched with the first screw rod 22 is used for driving the sliding block main body 33 to do lifting motion, the position of the first nut 21 on the first screw rod 22 can not be influenced even if the control module 61 and the driving device 23 are removed from the guide rail 34, so that the stability of lifting of the portable automobile lifting module to the automobile can be ensured. Preferably, the control module 61 is connected to the cover 51, the cover 51 is detachably connected to the guide rail 34 to prevent the control module 61 from being wetted by the cover 51, and a control panel may be provided on the surface of the cover 51 to facilitate the user to operate the control module 61 through the control panel.

As another embodiment of the driving unit 20, the driving unit 20 is implemented as a hydraulic cylinder capable of driving the slider body 33 to reciprocate in the extending direction of the guide rail 34, specifically, a cylinder body of the hydraulic cylinder is mounted on the guide rail 34, and a piston rod of the hydraulic cylinder extends in the extending direction of the guide rail 34 and is connected to the slider body 33 or the supporting portion 42.

As still another embodiment of the driving unit 20, the driving unit 20 is implemented as a linear motor capable of driving the slider body 33 to reciprocate along the extending direction of the guide rail 34, specifically, a stand of the linear motor is mounted on the guide rail 34, and a driving rod of the linear motor extends along the extending direction of the guide rail 34 and is connected to the slider body 33 or the supporting portion 42.

Fig. 8 exemplarily shows one preferred embodiment of the present invention, the cover 51 is integrally formed or machined with a first accommodating chamber 511 and a first opening 512 communicating the first accommodating chamber 511 with the outside, and the first opening 512 is provided at the bottom of the cover 51; the control module 61 is mounted on the cover 51 and is located in the first accommodating chamber 511; the support 25 of the driving unit 20 is detachably connected to the cover 51, specifically, the cover 51 is integrally formed, machined or connected with the first connecting structure 513, the support 25 is integrally formed, machined or connected with the second connecting structure 2521, the cover 51 is detachably connected to the second connecting structure 2521 on the support 25 through the first connecting structure 513 thereon, at least one of the first connecting structure 513 and the second connecting structure 2521 is a screw hole, and when only one of the first connecting structure 513 and the second connecting structure 2521 is a screw hole, the other can be a through hole, for example, the first connecting structure 513 is a through hole, and the second connecting structure 2521 is a screw hole; the first connection structure 513 of the cover 51 connected to the bracket 25 is provided on any other surface of the cover 51 than the top surface 514 thereof, for example, the first connection structure 513 is integrally formed, machined or connected to a side surface or a bottom surface of the cover 51, and preferably the first connection structure 513 is provided on a side surface of the cover 51 to prevent rainwater from entering the first accommodating chamber 511 from the first connection structure 513 while facilitating operation. Illustratively, the control module 61 may employ a PLC or an MCU of the prior art, and the present invention is not limited to a specific implementation of the control module 61. Further, a power source 52 for supplying power to the driving device 23 and the control module 61 is also included, preferably, the power source 52 is detachably connected to the housing 51, and the battery, the housing 51, the control module 61 and the driving device 23 are arranged such that when the battery is connected to the housing 51, the battery is connected to the connection line of the control module 61 and the driving device 23 (for example, a socket is connected to the housing 51, the socket is electrically connected to the control module 61 in the housing 51, and a plug is electrically connected to the power source 52), and whether or not the battery supplies power to the driving device 23 can be controlled by the control module 61. Preferably, the power source 52 is a rechargeable battery.

In some preferred embodiments, the driving device 23 of the driving unit 20 is detachably connected to the stand 25, and/or the driving device 23 is detachably and electrically connected to at least one of the control module 61 and the power source 52, the control module 61 is used for controlling the start and stop of the driving device 23, the driving device 23 is a rotating motor, and thus the resulting portable car lifting mechanism having the driving unit 20 can detach the power source 52, the cover 51 to which the control module 61 is connected, and the driving unit 20 (as shown in fig. 7) after lifting the position of the car, so as to avoid the power source 52, the control module 61, and the driving unit 20 from being damaged by water, and can also increase the detachment speed of the driving device 23, the control module 61, and the power source 52 when the driving device 23 is also detachably and electrically connected to at least one of the control module 61 and the power source 52. Preferably, as shown in fig. 9, the cover 51 is located above the driving device 23, so that the driving device 23 can also be shielded from rain by the cover 51 when the driving device 23 and the cover 51 are not removed from the stand 25.

As one example of the stand 25, as shown in fig. 9, the stand 25 includes a bottom plate 251 and a top plate 252 connected to each other; the transmission unit 24 of the driving unit 20 is provided between the bottom plate 251 and the top plate 252; the driving device 23 is detachably connected to the bottom plate 251 and is located below the bottom plate 251; the transmission unit 24 and the top plate 252 are located in the first accommodating chamber 511; the base plate 251 is integrally formed or machined with a first channel 2511 through which a connection line of the driving device 23 to the control module 61 or the power source 52 passes, and the first channel 2511 is illustratively an integrally formed or machined through hole in the base plate 251, whereby the transmission unit 24 and the connection line can be prevented from being externally disturbed during operation by the cover 51. In particular, as shown in fig. 9, the two sides of the top plate 252 above the first channel 2511 are integrally formed or machined with a relief structure 2522, and the relief structure 2522 is illustratively an integrally formed or machined through hole or a barrel slot in the top plate 252 so as to avoid interference between the connection line and the transmission unit 24 while providing a path for the connection line. Further, as shown in fig. 9, a third connection structure 2512 for connecting the base plate 251 with the driving device 23 is provided on the base plate 251 below the avoidance structure 2522, and the third connection structure 2512 is exemplified as a through hole or a screw hole integrally formed or machined on the base plate 251 so as to connect the driving device 23 to the base plate 251 while providing a path for a connection line. Further, the base plate 251 is provided with a first positioning hole corresponding to the fourth connection structure 231 of the driving device 23 for connection with the base plate 251 in addition to the third connection structure 2512, so as to prevent the driving device 23 connected to the base plate 251 from shaking during operation.

As an example of the transmission unit 24, as shown in fig. 9, the transmission unit 24 is a gear pair pivotably mounted on and between the bottom plate 251 and the top plate 252, that is, each gear of the gear pair is pivotably mounted on the bottom plate 251 and the top plate 252 with the rotation axes of all the gears disposed in parallel with each other, and the gears of the gear pair are engaged with each other. Preferably, as shown in fig. 9, the top plate 252 is integrally formed or machined with a second passageway 2523 through which a manual drive lever of a manual drive gear pair rotates; the bottom plate 251 is integrally formed or machined with a second positioning hole 2513 for positioning the manual driving rod; the manual driving lever is such that when it is inserted into the second positioning hole 2513, a gear on the manual driving lever is meshed with one gear of the gear pair. Thus, even in the event of exhaustion of the power supply 52 or damage to at least one of the control module 61 and the driving device 23, it is possible to perform positioning by detaching the cover 51 from the bracket 25 and inserting the manual driving lever through the second passage 2523 and into the second positioning hole 2513, so that the operator can drive the gear pair to operate by hand-shaking the manual driving lever in a special case.

As another example of the transmission unit 24, the transmission unit 24 may employ an existing pulley transmission structure.

As yet another embodiment of the transmission unit 24, the transmission unit 24 may employ an existing sprocket drive structure.

As a preferred embodiment of the cover 51, as shown in fig. 9, the top surface 514 of the cover 51 is provided with a control panel for controlling the control module 61, and the control panel may be a control panel adopted in the prior art, and the specific implementation manner of the control panel is not limited in the present invention; the top surface 514 of the cover 51 is covered with a waterproof membrane; and/or the top surface 514 of the cover 51 is integrally formed or machined with a water guide groove 515 that communicates the side edges of the top surface 514 with the outside. Thus, when the top surface 514 of the cover 51 is provided with the control panel, the waterproof film covering the top surface 514 can prevent the top surface 514 from leaking into the first accommodating chamber 511; when the side edge of the top surface 514 is provided with the water guiding groove 515, water accumulation on the top surface 514 can be avoided, and water is further prevented from penetrating into the first accommodating cavity 511 from the top surface 514 of the cover body.

As a preferred embodiment of the slider body 33, as shown in fig. 10 to 13, the slider body 33 is pivotally connected to the first nut 21 about the first pivot shaft 32, specifically, the slider body 33 may be directly pivotally connected to the first nut 21, may be pivotally connected to the first connecting member 31 fixedly provided with respect to the first nut 21, the first connecting member 31 may be connected to the first nut 21, may be integrally formed with the first nut 21, and the supporting portion 42 may be connected to the first nut 21, or may be connected to the first connecting member 31; and the axis 321 of the first pivot shaft 32 is perpendicular to the extending direction of the guide rail 34, so that even if the fit clearance between the slider body 33 and the guide rail 34 deviates due to abrasion during processing, installation and use, the slider body 33 can move smoothly relative to the guide rail 34 by the pivoting movement of the slider body 33 around the axis 321 of the first pivot shaft 32, and friction between the slider body 33 and the guide rail 34 is reduced; preferably, the first nut 21 and the first pivot shaft 32 are both made of a high-strength rigid material, and the slider body 33 is made of a material having a hardness lower than that of the guide rail 34; further, the slider body 33 is made of a plastic or a lightweight metal material, and/or at least one of the first nut 21 and the first pivot shaft 32 is hollow, for example, only the slider body 33 is made of a plastic or a lightweight metal material, or only the first nut 21 is hollow, or only the first pivot shaft 32 is hollow, or both the first nut 21 and the first pivot shaft 32 are hollow while the slider body 33 is made of a plastic or a lightweight metal material, or both the slider body 33 and the first pivot shaft 32 are hollow while the slider body 33 is made of a plastic or a lightweight metal material. The first nut 21 and the first pivot shaft 32 are made of high-strength rigid materials so as to improve the strength of the first nut 21 and the first pivot shaft 32 and avoid deformation of the first nut 21 and the first pivot shaft 32 so as to ensure the stability of the slider module, and preferably, high-strength and light-weight metals are adopted; preferably, a high-strength rigid material is used, for example, titanium alloy, magnesium alloy or aluminum alloy is used. Generally, the guide rail 34 is made of alloy steel, correspondingly, the slider body 33 can be made of light metal materials such as plastics or aluminum alloy or other non-metal materials such as carbon fiber, the plastics comprise common plastics such as PE, PP, PVC, PS, ABS, engineering plastics such as PA, PC, POM, PPO, PET, or special plastics such as PSU, PPS, PEEK, PTFE and polyimide, preferably, high-density plastics are adopted, so that the slider body 33 has certain tension because the hardness of the slider body 33 is smaller than that of the guide rail 34, and meanwhile, the slider body 33 is pivotally connected to the first nut 21, so that even if the slider module moves relative to the guide rail 34 under the bearing condition, the slider body 33 can not be embedded into the guide rail 34 even if the slider module rotates relative to the first nut 21, so that the slider body 33 can smoothly move relative to the guide rail 34. At least one of the first nut 21 and the first pivot shaft 32 is hollow, and the weight reduction of the first nut and the first pivot shaft can be achieved.

Preferably, as shown in fig. 10, 11 and 13, the slider body 33 has two opposite sides capable of cooperating with the guide rail 34 to achieve surface contact of the slider body 33 with the guide rail 34, for example, by integrally molding or processing the slider body 33 into a square plate-like structure. Thus, even if the slider body 33 rotates relative to the first nut 21, the side surface of the slider body 33 can be engaged with the guide rail 34, so that the contact surface of the slider body 33 is prevented from being deformed by a large pressure due to a small contact surface with the guide rail 34; moreover, since the area of the slider body 33 which is fitted to the guide rail 34 is large, it is possible to ensure that the slider body 33 is fitted to the guide rail 34 more stably; further, the slider body 33 is at least arranged at one side of the first nut 21, and at least two slider bodies 33 positioned at least at one side of the first nut 21 are provided, and the slider bodies 33 at the side are sequentially arranged along the extending direction of the guide rail 34; thereby, the length of the slider body 33 matched with the guide rail 34 can be prolonged, so that the first nut 21 can move along the guide rail 34 stably under the drive of the driving unit 20; moreover, at least two slider bodies 33 are arranged along the extending direction of the guide rail 34, so that different slider bodies 33 can rotate more freely relative to the first nut 21, and the problem that the slider bodies 33 are easy to be embedded into the guide rail 34 due to the increase of the adapting length of the slider bodies 33 and the guide rail 34 is avoided. Preferably, the slider body 33 is provided on both sides of the first nut 21 facing away from each other. Thereby, it is possible to make the first nut 21 move more smoothly with respect to the guide rail 34 with the slider body 33 fitted with the guide rail 34. Preferably, the contact between adjacent slider bodies 33 located on the same side of the first nut 21 is a surface contact. To avoid that the rotation of the slider body 33 with respect to the first nut 21 is hindered by the adjacent slider body 33.

Fig. 14 schematically shows an automotive lifting system according to an embodiment of the invention.

As shown in fig. 14, the car lifting system includes a main control module 62 and four sets of the aforementioned portable car lifting devices; the main control module 62 is configured to control the start and stop of the control module 61. Thus, the four sets of portable car lifters may be controlled to be actuated together or one of the sets of portable car lifters may be controlled to be actuated by the master control module 62.

In the present invention, "high strength" means a yield strength of more than 210MPa.

In the present invention, "light metal" is consistent with the general definition of the field of materials and includes metallic titanium, metallic aluminum, metallic magnesium, metallic lithium, and the like.

In the present invention, the connection or installation is a fixed connection without special emphasis. The fixed connection may be implemented as a detachable connection or as a non-detachable connection as is commonly used in the art. The detachable connection may be implemented in the prior art, for example, by screwing or keying. The non-detachable connection may also be achieved using prior art techniques, such as welding or gluing.

What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.

Claims

1. Portable car elevating system, its characterized in that includes:

a base (41);

a moving unit fixedly arranged relative to the base (41);

and a support part (42) which can move along the vertical direction relative to the base (41) under the drive of the moving unit, wherein the support part (42) is arranged to be capable of supporting wheels of a car; wherein,

The base (41) and the support (42) are provided on the same side of the mobile unit, and the base (41) is located outside the support (42).

2. The portable car lifting mechanism according to claim 1, wherein at least one of the base (41) and the support portion (42) is provided in a "匚" type structure;

preferably, the openings of the 匚 -shaped structures are all arranged towards one side away from the mobile unit;

Preferably, at least one of the base (41) and the supporting part (42) is formed by adopting a hollow pipe body, and/or at least one of the base (41) and the supporting part (42) is provided with a through hole;

In particular, the height of the base (41) is greater than the height of the support (42).

3. The portable car lifting mechanism according to claim 2, characterized in that the support (42) is detachably connected with the mobile unit; and/or

The supporting part (42) comprises a connecting part (422) connected with the mobile unit and two contact parts (421) detachably connected through the connecting part (422) and used for being contacted with the wheels, and the connecting part (422) and the contact parts (421) jointly form the 匚 -shaped structure; and/or

The base (41) comprises a connecting pipe (411) which is fixed relative to the mobile unit, and two side pipes (412) which are detachably connected through the connecting pipe (411), wherein the connecting pipe (411) and the side pipes (412) jointly form the '匚' shaped structure;

in particular, the distance from the side tube (412) to the connecting tube (411) is greater than the distance from the contact portion (421) to the connecting portion (422);

in particular, the contact portion (421) is screwed with the connection portion (422); and/or the connecting pipe (411) is connected with the side pipe (412) through a spline in an inserting way;

The top of the contact part (421) is arranged in an arc shape, and preferably, the contact part (421) is in a cylindrical tubular structure; and/or the connecting pipe (411) and the side pipe (412) are square pipes with square cross sections, preferably, the width of the side pipe (412) is smaller than the height of the side pipe (412);

in particular, at least one of the connecting pipe (411), the side pipe (412), the contact portion (421) and the connecting portion (422) is a seamless steel pipe.

4. A portable car lifting mechanism according to any one of claims 1 to 3, characterized in that the mobile unit comprises a guide rail (34) and a slider body (33) adapted to each other; wherein,

The guide rail (34) is arranged along the vertical direction;

the base (41) is relatively fixed on the guide rail (34);

The support part (42) is arranged on the sliding block main body (33);

in particular, the guide rail (34) is a hollow channel steel;

further, the slider body (33) is located in a hollow portion of the channel steel;

Preferably, the surface of at least one of the base (41), the supporting part (42) and the guide rail (34) is provided with a rust-proof coating.

5. A portable automobile lifting device comprising the portable automobile lifting mechanism according to any one of claims 1 to 4;

The device also comprises a driving unit (20) which can drive the moving unit to drive the supporting part (42) to move along the vertical direction and has a locking function.

6. Portable automotive lifting device according to claim 5, characterized in that the drive unit (20) comprises:

a first screw (22) which is arranged pivotably about an axis (321) thereof relative to the moving unit, the first screw (22) being arranged in a direction in which the moving unit moves the support (42);

and a first nut (21) fitted on the first screw (22), the first nut (21) being provided on the moving unit;

Preferably, the first screw rod (22) is pivotally arranged relative to a guide rail (34) of the mobile unit, the first screw rod (22) is arranged along the extending direction of the guide rail (34), and the first nut (21) is arranged on a sliding block main body (33) of the mobile unit, which is matched with the guide rail (34);

further, the guide rail (34) is a hollow channel steel, and the first screw rod (22) and the first nut (21) are positioned in the hollow part of the channel steel.

7. Portable automotive lifting device according to claim 6, characterized in that the drive unit (20) further comprises a drive means (23) for driving the movement of the first screw (22);

The control module (61) is used for driving the driving device (23) to start and stop; wherein,

At least one of the drive device (23) and the control module (61) is detachably arranged relative to the guide rail (34).

8. The portable automobile lifting device according to claim 7, further comprising a cover body (51), the cover body (51) being provided with a first accommodating chamber (511) and a first opening (512) communicating the first accommodating chamber (511) with the outside, the first opening (512) being provided at a bottom of the cover body (51);

and a bracket (25) of a drive unit (20) detachably connected to the cover (51); wherein,

The control module (61) is arranged on the cover body (51) and is positioned in the first accommodating cavity (511);

a first connecting structure (513) of the cover body (51) connected with the bracket (25) is arranged on the side wall of the cover body (51);

In particular, the device also comprises a power supply (52), wherein the power supply (52) is plugged with the cover body (51), and when the power supply (52) is plugged with the cover body (51), the power supply (52) is electrically connected with the control module (61);

In particular, the driving device (23) is detachably connected to the support (25), and/or the driving device (23) is electrically connected to at least one of the control module (61) and the power source (52) in a detachable manner, preferably, the cover (51) is located above the driving device (23).

9. The portable car lifting device according to claim 8, characterized in that the bracket (25) comprises a bottom plate (251) and a top plate (252) connected to each other;

The transmission unit (24) of the driving unit (20) is arranged between the bottom plate (251) and the top plate (252);

The driving device (23) is detachably connected to the bottom plate (251) and is positioned below the bottom plate (251);

The transmission unit (24) and the top plate (252) are positioned in the first accommodating cavity (511);

The base plate (251) is provided with a first channel (2511) for a connection line for connecting the driving device (23) with the control module (61) or the power supply (52);

in particular, the two sides of the top plate (252) above the first channel (2511) are provided with avoidance structures (2522);

Further, a third connecting structure (2512) for connecting the bottom plate (251) with the driving device (23) is arranged on the bottom plate (251) below the avoiding structure (2522);

further, the bottom plate (251) is provided with a first positioning hole corresponding to a fourth connecting structure (231) used for being connected with the bottom plate (251) on the driving device (23) besides the third connecting structure (2512);

illustratively, the transmission unit (24) is a gear pair mounted between the bottom plate (251) and the top plate (252), the top plate (252) is provided with a second channel (2523) through which a manual driving rod for manually driving the gear pair to rotate passes, and the bottom plate (251) is provided with a second positioning hole (2513) for positioning the manual driving rod.

10. Portable car lifting device according to any one of claims 6 to 9, characterized in that the slider body (33) is pivotally connected to the first nut (21) about a first pivot axis (32), and that the axis (321) of the first pivot axis (32) is perpendicular to the direction of extension of the guide rail (34);

Preferably, the first nut (21) and the first pivot shaft (32) are both made of high-strength rigid materials, and the sliding block main body (33) is made of materials with lower hardness than the guide rail (34);

Further, the slider body (33) is made of plastic or lightweight metal material, and/or at least one of the first nut (21) and the first pivot shaft (32) is hollow.

11. The portable car lifting device according to claim 10, characterized in that the slider body (33) has two sides facing away from each other and being able to cooperate with the guide rail (34) to achieve a surface contact of the slider body (33) with the guide rail (34);

Further, the sliding block main body (33) is at least arranged on one side of the first nut (21), at least two sliding block main bodies (33) positioned on at least one side of the first nut (21) are arranged, and the sliding block main bodies (33) on the side are sequentially arranged along the extending direction of the guide rail (34); preferably, the two sides of the first nut (21) facing away from each other are provided with a sliding block main body (33).

12. Automotive lifting system, characterized by comprising a main control module (62) and four sets of portable automotive lifting devices according to any one of claims 7 to 11; wherein,

The main control module (62) is arranged to control the start and stop of the control module (61).