阅读说明：本技术 一种升降装置 (Lifting device ) 是由 安志奇 于 2020-05-14 设计创作，主要内容包括：本申请提供了一种升降装置,包括：底架,该底架包括并列设置的两个支撑杆,所述两个支撑杆通过连接件连接在一起,所述两个支撑杆之间具有第一避让空间；升降机构,包括升降组件和升降台,所述升降组件的下端与所述底架连接,所述升降组件的上端与所述升降台连接,以驱动所述升降台上升或下降,所述升降台朝向所述底架的一面具有第二避让空间,当所述升降台下降并靠近所述底架时,所述升降台至少部分容置于所述第一避让空间内,所述连接件至少部分容置于所述第二避让空间内,从而尽可能的降低升降台与地面之间的高度差,以便于将地面上的货物搬运到升降台上,或者,将升降台上的货物搬运下来。(The application provides a lifting device, includes: the device comprises a base frame, a first support rod and a second support rod, wherein the base frame comprises two support rods which are arranged in parallel, the two support rods are connected together through a connecting piece, and a first avoidance space is arranged between the two support rods; the lifting mechanism comprises a lifting component and a lifting platform, the lower end of the lifting component is connected with the underframe, the upper end of the lifting component is connected with the lifting platform to drive the lifting platform to ascend or descend, a second avoidance space is arranged on one surface, facing the underframe, of the lifting platform, when the lifting platform descends and approaches the underframe, at least part of the lifting platform is accommodated in the first avoidance space, and at least part of the connecting piece is accommodated in the second avoidance space, so that the height difference between the lifting platform and the ground is reduced as much as possible, and therefore goods on the ground can be carried onto the lifting platform or carried down.)

1. A lifting device, comprising:

the chassis comprises two support rods arranged in parallel, the two support rods are connected together through a connecting piece, and a first avoidance space is formed between the two support rods and on two sides of the connecting piece;

the lifting mechanism comprises a lifting assembly and a lifting platform, the lifting assembly is connected with the lifting platform to drive the lifting platform to ascend or descend, a second avoidance space is arranged on one surface, facing the underframe, of the lifting platform, when the lifting platform descends and approaches the underframe, at least part of the lifting platform is contained in the first avoidance space, and at least part of the connecting piece is contained in the second avoidance space.

2. The lifting device as claimed in claim 1, wherein the lifting mechanism comprises two lifting members, the lower ends of the two lifting members are respectively connected with the two support rods, and the upper ends of the two lifting members are respectively connected with the lifting platform.

3. The lifting apparatus as claimed in claim 2, wherein the lifting table comprises two lifting rods supported at upper ends of the two lifting assemblies, respectively, and a support plate connected between the two lifting rods.

4. The lifting device as claimed in claim 1, wherein the connecting member is a connecting rod, the second avoiding space includes a V-shaped groove disposed above and opposite to the connecting rod, and the lifting platform is disposed above and opposite to the first avoiding space.

5. The lift mechanism of claim 4, wherein the support plate comprises an inverted "V" shaped carrier plate having an apex angle θ of 140 degrees to 175 degrees.

6. The lift mechanism of claim 4, wherein said support plate further comprises two straps movably connected to opposite ends of said carrier plate.

7. The lift mechanism of claim 4, wherein said support plate further comprises a plurality of reinforcing plates disposed along the length of said carrier plate.

8. The lifting device as claimed in claim 2, wherein the lifting assembly comprises a driving cylinder, and a first driving rod and a second driving rod hinged together in a crossed manner, the first driving rod comprises a third end hinged to the supporting rod and a fourth end slidably hinged to the lifting rod, the second driving rod comprises a fifth end hinged to the lifting rod and a sixth end slidably hinged to the supporting rod, and two ends of the driving cylinder are respectively hinged to the first driving rod and the second driving rod to drive the first driving rod and the second driving rod to rotate relatively.

9. The lift mechanism of claim 8, wherein the second drive rod has a hinge point that is hinged to the first drive rod; a hinged part extends from one side of the second driving rod, which is far away from the supporting rod, the hinged part is positioned between the hinged point and the fifth end of the second driving rod, one end of the driving cylinder is hinged with the third end of the first driving rod, and the other end of the driving cylinder is hinged with the hinged part.

10. The lifting device as claimed in any one of claims 1 to 9, further comprising a control module connected to the lifting assembly, the control module being mounted on the outside of the support bar.

Technical Field

The invention relates to the technical field of logistics, in particular to a lifting device.

Background

Along with the rapid development of the logistics industry, the lifting device for transporting goods is used more and more frequently, and particularly for logistics outlets with platforms, the lifting device is usually used for transporting goods so as to improve the transporting efficiency of the goods. Taking the process of transporting goods on the ground into the boxcar through the lifting device as an example: generally, the height of the lifting platform of the lifting device is lowered to enable the lifting platform to be close to the ground, goods are carried to the lifting platform of the lifting device, then the lifting platform is controlled to ascend to enable the height of the lifting platform to be consistent with the height of a boxcar, and finally the goods on the lifting platform are pushed into the boxcar.

However, in the conventional lifting device, even when the lifting platform is lowered to the limit position, a large height difference still exists between the lifting platform and the ground, and the lifting device is inconvenient for transporting goods from the ground to the lifting platform.

Disclosure of Invention

This application provides a lifting device on the one hand, aims at improving lifting device's structure, makes lifting device's elevating platform descend to extreme position after, and the difference in height between and the ground is less to carry the elevating platform with subaerial goods on, perhaps, get off the goods transport on the elevating platform.

The application provides a lifting device, lifting device includes:

the chassis comprises two support rods arranged in parallel, the two support rods are connected together through a connecting piece, and a first avoidance space is formed between the two support rods and at two sides of the connecting piece;

the lifting mechanism comprises a lifting assembly and a lifting platform, the lifting assembly is connected with the lifting platform to drive the lifting platform to ascend or descend, a second avoidance space is arranged on one surface, facing the underframe, of the lifting platform, when the lifting platform descends and approaches the underframe, at least part of the lifting platform is contained in the first avoidance space, and at least part of the connecting piece is contained in the second avoidance space.

Optionally, the lifting mechanism includes two lifting assemblies, lower ends of the two lifting assemblies are respectively connected with the two support rods, and upper ends of the two lifting assemblies are respectively connected with the lifting platform.

Optionally, the lifting platform comprises two lifting rods respectively supported at the upper ends of the two lifting assemblies, and a supporting plate connected between the two lifting rods.

Optionally, the connecting piece is a connecting rod, the second avoidance space comprises a V-shaped groove, the groove is arranged above the connecting rod and opposite to the connecting rod, and the lifting platform is located above the first avoidance space and opposite to the first avoidance space.

Optionally, the supporting plate comprises an inverted "V" shaped carrier plate, and the vertex angle θ of the carrier plate is 140 degrees to 175 degrees.

Optionally, the supporting plate further includes two overlapping plates, and the two overlapping plates are movably connected to two ends of the supporting plate respectively.

Optionally, the supporting plate further includes a plurality of reinforcing plates disposed along a length direction of the bearing plate.

Optionally, the lifting assembly includes a driving cylinder, and a first driving rod and a second driving rod which are hinged together in a crossed manner, the first driving rod includes a third end hinged to the supporting rod, and a fourth end hinged to the lifting rod in a sliding manner, the second driving rod includes a fifth end hinged to the lifting rod, and a sixth end hinged to the supporting rod in a sliding manner, two ends of the driving cylinder are respectively hinged to the first driving rod and the second driving rod to drive the first driving rod and the second driving rod to rotate relatively.

Optionally, the second drive rod has a hinge point hinged with the first drive rod; a hinged part extends from one side of the second driving rod, which is far away from the supporting rod, the hinged part is positioned between the hinged point and the fifth end of the second driving rod, one end of the driving cylinder is hinged with the third end of the first driving rod, and the other end of the driving cylinder is hinged with the hinged part.

Optionally, the lifting device further comprises a control module connected with the lifting assembly, and the control module is installed on the outer side of the supporting rod.

The lifting device provided by the embodiment of the application comprises an underframe and a lifting mechanism, wherein the underframe comprises two support rods which are arranged in parallel, and the two support rods are connected together through a connecting piece; the lifting mechanism comprises a lifting platform and a lifting assembly, the lifting assembly is connected with the lifting platform to drive the lifting platform to ascend or descend, and a second avoiding space is formed in one surface, facing the bottom frame, of the lifting platform. The two support rods and the connecting piece are enclosed to form a first avoidance space, when the lifting platform descends and approaches to the underframe, at least part of the lifting platform is accommodated in the first avoidance space, and at least part of the connecting piece is accommodated in the second avoidance space, so that the height difference between the lifting platform and the ground is reduced as much as possible, and therefore goods on the ground can be conveniently carried to the lifting platform, or the goods on the lifting platform can be carried.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a lifting platform of a lifting device provided in an embodiment of the present application after being lifted;

fig. 2 is a schematic structural diagram of an embodiment of a descending device provided in the embodiment of the present application after a descending platform descends;

fig. 3 is a schematic structural diagram of an embodiment of an elevator platform provided in an embodiment of the present application;

FIG. 4 is a front view of the lift table shown in FIG. 3;

FIG. 5 is a schematic structural diagram of an embodiment of a lift assembly provided by an embodiment of the present application;

fig. 6 is a schematic structural diagram of an embodiment of a chassis provided in the present application.

A chassis 100; a support bar 110; a second chute 1101; a second hinge hole 1102; a second guide 1103, a second slider 1104; a first avoidance space 111; a roller 112; a foot support structure 113; a moving handle 114; a stopper rod 115; a connecting member 120; a lifting mechanism 200; a lifting assembly 210; a drive cylinder 211, a first drive rod 212; a via hole 2121; a first hinge hole 2122; a third hinge hole 2123; a second drive lever 213; a fourth hinge hole 2131; a fifth hinge hole 2132; a hinge portion 2133; relief holes 2134; side plates 2135; a lifting table 220; a second avoidance space 221; a support plate 222; a sub-support plate 2221; a fixed plate 2222; a connection plate 2223; a strap 2224; a reinforcing plate 2225; a lift lever 223; a first rail 2231; a first slider 2232; sixth hinge hole 2233; a control module 230.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Embodiments of the present application provide a lifting device, which will be described in detail below.

Firstly, the embodiment of the application provides a lifting device, which comprises an underframe and a lifting mechanism, wherein the underframe comprises two support rods which are arranged in parallel, the two support rods are connected together through a connecting piece, and a first avoiding space is formed between the two support rods; the lifting mechanism comprises a lifting component and a lifting platform, and the lifting component is connected with the lifting platform so as to drive the lifting platform to ascend or descend; when the lifting platform descends and approaches to the underframe, at least part of the lifting platform is accommodated in the first avoidance space, and at least part of the connecting piece is accommodated in the second avoidance space.

Fig. 1 is a schematic structural diagram of an embodiment of a lifting mechanism of a lifting device according to an embodiment of the present disclosure after being lifted. As shown in fig. 1, 2, 4 and 6, the lifting device includes a base frame 100 and a lifting mechanism 200. The underframe 100 comprises two support bars 110 arranged side by side, the two support bars 110 are connected together through a connecting piece 120, and a first avoidance space 111 is formed between the two support bars 110. The lifting mechanism 200 includes a lifting assembly 210 and a lifting platform 220, wherein the upper end of the lifting assembly 210 is connected to the lifting platform 220 to drive the lifting platform 220 to ascend or descend, one surface of the lifting platform 220 facing the base frame 100 is provided with a second avoiding space 221, when the lifting platform 220 descends and approaches the base frame, at least part of the lifting platform is accommodated in the first avoiding space 111, and at least part of the connecting member is accommodated in the second avoiding space.

Specifically, the underframe 100 has two first avoidance spaces 111, the two first avoidance spaces are respectively located at the left side and the right side of the connecting member 120, two ends of the two support rods 111 are spaced from each other to form two openings communicated with the two avoidance spaces 111, one side of the lifting platform 220 facing the underframe 100 is provided with a second avoidance space 221, when the lifting assembly 210 controls the lifting platform 220 to descend to the lowest position, the connecting member 120 can be accommodated in the second avoidance space 221 of the lifting platform 220, and the lifting platform 220 can be accommodated in the first avoidance space 111 to reduce the height difference between the lifting platform 220 and the ground as much as possible, so that goods on the ground can be conveniently conveyed onto the lifting platform 220 from the openings of the underframe 100, or goods on the lifting platform 220 can be conveyed onto the ground from the openings of the underframe 100.

In addition, the goods may be articles, or may be a cage car on which the articles are placed, and the present disclosure is not limited thereto.

Referring to fig. 1 and 5, in the embodiment of the present application, the lifting mechanism 200 includes two lifting assemblies 210, lower ends of the two lifting assemblies 210 are respectively supported on the two support rods 110 of the base frame 100, and upper ends of the two lifting assemblies 210 are respectively connected to the lifting platform 220 to drive the lifting platform 220 to ascend or descend. Because the lifting assembly 210 comprises the first driving rod 212 and the second driving rod 213 which are hinged together in a crossed manner, the lower ends of the first driving rod 212 and the second driving rod 213 are respectively supported on the two supporting rods 110 of the underframe 100, and the upper ends of the first driving rod 212 and the second driving rod 213 are connected with the lifting platform 220, the space formed between the two lifting assemblies 210 is communicated with the first avoiding space 111 on the underframe 100, the lifting platform 220 is positioned above the first avoiding space 110 and opposite to the first avoiding space 110, when the lifting assembly 210 drives the lifting platform 220 to descend, the lifting assembly 210 is not positioned below the lifting platform 220 and interferes with the lifting platform, therefore, the bottom of the lifting platform 220 can descend into the first avoiding space 111, thereby reducing the height difference between the lifting platform 220 and the ground as much as possible, so as to conveniently carry goods on the ground onto the lifting platform 220, alternatively, the load on the lift table 220 is carried down.

In the embodiment of the present application, the lifting platform 220 includes a supporting plate 222 and two lifting rods 223, the supporting plate 222 is connected between the two lifting rods 223 for placing goods, and the two lifting rods 223 are respectively supported at the upper ends of the two lifting assemblies 210 to improve the connection stability between the lifting platform 220 and the lifting assemblies 210. Specifically, the supporting plate 222 includes a sub-supporting plate 2221 and a first connecting structure connecting the sub-supporting plate 2221 and the lifting rods 223, and the height of the sub-supporting plate 2221 is smaller than the heights of the two lifting rods 223, so that the lifting rods 223 can limit the goods on the sub-supporting plate 2221, prevent the goods from sliding off from the two sides of the sub-supporting plate 222, and meanwhile, when the lifting assembly 210 drives the lifting platform 220 to descend, the sub-supporting plate 2221 can be closer to the ground, so that the height of the lifting platform 220 is further reduced. The two elevating rods 223 of the elevating platform 220 are arranged in parallel, the extending direction of the elevating rods 223 is the same as the extending direction of the supporting rod 110 below, and an installation space is formed between the two elevating rods 223. The first connection structure of the support plate 222 includes two fixing plates 2222 supported above the two lifting rods 223 and fixedly connected to the lifting rods 223, a connecting plate 2223 downwardly extends from a side of each fixing plate 2222 close to the installation space, and opposite side edges of the sub-support plate 2221 are fixedly connected to lower side edges of the two first connecting plates 2241, respectively, so that the height of the sub-support plate 2221 is less than the height of the two lifting rods 223.

In some embodiments, the fixing plate 2222, the connecting plate 2223, and the sub-support plate 2221 of the support plate 222 may be integrally provided. Therefore, the support plate 222 can be formed by bending the plate-shaped structure, and the processing is very convenient.

Referring to fig. 1 to 4 and 6, in the embodiment of the present application, the connecting member 120 is a connecting rod, the second avoiding space 221 is a V-shaped groove, the groove is disposed above the connecting rod 120 and opposite to the connecting rod, and the lifting platform 220 is disposed above the first avoiding space 111 and opposite to the first avoiding space. In this embodiment, the groove is located above the connecting element 120 and opposite to the connecting element 120, and may be located directly above the connecting element 120, or offset from the position directly above the connecting element by a certain distance, and after the lifting assembly 210 drives the lifting platform 220 to descend, the connecting element 120 can be completely accommodated in the groove or a part of the connecting element can be accommodated in the groove. The lifting platform 220 is located above the first avoidance space 111, for example, the lifting platform 220 may be located directly above the first avoidance space 111, or may be offset from the first avoidance space 111 by a certain distance, and after the lifting assembly 210 drives the lifting platform 220 to descend, the lifting platform 220 is completely accommodated in the first avoidance space 111, or a part of the lifting platform 220 is accommodated in the first avoidance space 111 and the other part of the lifting platform 220 extends out of an opening on the underframe 100.

Referring to fig. 3 and 4, in the embodiment of the present application, the supporting plate 222 includes an inverted "V" shaped sub-supporting plate 2221, and the vertex angle θ of the sub-supporting plate 2221 is 140 degrees to 175 degrees, so that when the supporting plate 222 is lowered to the lowest height, the height difference between the two ends of the supporting plate 222 and the ground is as small as possible, for example, the two ends of the sub-supporting plate 2221 can be directly abutted against the ground, thereby facilitating the loading and unloading of goods at the two ends of the supporting plate 222. It should be noted that the vertex angle θ of the sub-support plate 2221 refers to an angle formed by enclosing two side surfaces of the inverted "V" shaped sub-support plate facing the bottom chassis, and the vertex angle may be a smooth vertex angle having a transition structure. Specifically, the sub-support plate 2221 has a symmetrical structure, the vertex angle θ of the sub-support plate may be further selected to be 160 degrees to 175 degrees, that is, the sub-support plate 2221 is a small-angle inclined platform with a symmetrical structure, the sub-support plate is designed to be a small-angle inclined platform with a symmetrical structure, one surface of the sub-support plate facing the bottom frame 100 is provided with a V-shaped groove, and the V-shaped groove forms a second avoidance space 221 capable of accommodating the connecting member 120 when the support plate descends and approaches the bottom frame 100, so as to avoid the interference of the connecting member 120 with the lifting platform 220, and enable the lifting platform 220 to be accommodated in the first avoidance space 111 as much as possible. In this embodiment, the design of sub-support plate 2221 as the small-angle inclined platform with symmetrical structure can make the cage car fix a position on support plate 222 fast, and simultaneously, lift assembly 210 is in the lift or decline in-process of the cage car in drive support plate and the backup pad, and the cage car inevitably can produce the removal along support plate length direction, but with the small-angle inclined platform with symmetrical structure of backup pad design, then the cage car need have more than can cross the slope top can only slide over the slope top, thereby be favorable to the stable transmission of cage car on support plate 222.

In some embodiments, the inverted "V" shaped sub-support plate 2221 with a symmetrical structure can be directly formed by bending a plate-like structure, which is very convenient to process.

In this embodiment, the supporting plate 222 further includes two bridging plates 2224, and the two bridging plates 2224 are movably connected to the two ends of the sub-supporting plate 2221 respectively, so as to facilitate loading and unloading through the two ends of the supporting plate, and meanwhile, have a limiting effect on the goods at the two ends of the supporting plate. Specifically, two bridging plates 2224 are respectively rotatably connected to two ends of the sub-support plate 2221, the bridging plates 2224 can rotate upwards or downwards around the ends of the sub-support plate 2221 to form a transition structure with a certain angle, and the cargo can be directly moved into the car or other platforms with a high height through the bridging plates 2224 without rotating the lifting device by a certain angle, so that the lifting platform 220 is close to the car or other platforms with a high height. When the lifting assembly 210 drives the lifting platform 220 to be lifted or lowered to the vicinity of the loading platform, the bridging plate 2224 can perform a certain transition function between the supporting plate 222 and the loading platform, so that the goods can be more conveniently carried from the ground onto the supporting plate 222. For example, in the cage car loading process, the cage car can be pushed onto the supporting plate 222, then the lapping plates 2224 at the two ends are folded, the lifting platform 220 and the cage car are lifted to the height of the carriage through the lifting assembly 210, then the lapping plate 2224 at the loading side is rotated to be lapped in the carriage, and the cage car is pushed into the carriage; after the cage car is loaded, the cage car is pushed onto the support plate 222, the lapping plate 2224 on one side of the folding car is rotated and folded, then the cage car is lowered to the ground, the lapping plate 2224 on one side of the rotating car is lapped with the ground, and the cage car is pushed out of the support plate 222. Of course, in other embodiments of the present invention, the end of the support plate 222 may be designed to directly overlap the cabin or the ground without additionally providing the overlapping plate 2224.

In the present embodiment, the support plate 222 further includes a plurality of reinforcing plates 2225 provided along the length direction of the support plate. Specifically, the plurality of reinforcing plates 2225 are disposed on a surface of the sub-support plate 2221 facing the chassis, and are disposed in parallel along the length direction of the sub-support plate 2221, so as to reinforce the load capacity of the sub-support plate 2221.

In some embodiments, as shown in fig. 1 and 5, the lifting assembly 210 includes a driving cylinder 211, and a first driving rod 212 and a second driving rod 213 hinged together in a crossed manner, wherein both ends of the driving cylinder 211 are connected between the first driving rod 212 and the second driving rod 213 to drive the first driving rod 212 to rotate relative to the second driving rod 213, and the first driving rod 212 and the second driving rod 213 are connected between the supporting rod 110 and the lifting platform 220. When the driving cylinder 211 drives the first driving rod 212 and the second driving rod 213 to rotate relatively, the overall height of the first driving rod 212 and the second driving rod 213 can be changed, and thus the height of the lifting platform 220 can be changed.

The first driving lever 212 and the second driving lever 213 are hinged together in a crossing manner, that is, the first driving lever 212 and the second driving lever 213 are crossed with each other, and the first driving lever 212 and the second driving lever 213 are hinged together at the crossing portion, so that the first driving lever 212 can rotate relative to the second driving lever 213.

Specifically, a through hole 2121 is formed in the middle outer side wall of the first driving rod 212, the second driving rod 213 penetrates through the through hole 2121 to intersect with the first driving rod 212, and a pin simultaneously penetrates through the first driving rod 212 and the second driving rod 213, so that the first driving rod 212 and the second driving rod 213 are hinged together. The through hole 2121 of the first driving rod 212 extends along the length direction of the first driving rod 212, so that the minimum included angle formed by the rotation of the first driving rod 212 and the second driving rod 213 is as small as possible, and further, the height of the lifting platform 220 driven by the driving lifting assembly 210 after descending is as small as possible.

In some embodiments, the first driving rod 212 includes a third end and a fourth end opposite to each other, the third end of the first driving rod 212 is hinged to the supporting rod 110, and the fourth end of the first driving rod 212 is slidably hinged to the lifting rod 223; the second driving rod 213 includes a fifth end and a sixth end opposite to each other, the fifth end of the second driving rod 213 is hinged to the lifting rod 223, the sixth end of the second driving rod 213 is slidably hinged to the supporting rod 110, and two ends of the driving cylinder 211 are respectively hinged to the first driving rod 212 and the second driving rod 213 to drive the first driving rod 212 and the second driving rod 213 to rotate relatively.

The sliding hinge connection between the fourth end of the first driving rod 212 and the lifting rod 223 means that the fourth end of the first driving rod 212 is hinged to the lifting rod 223, and the fourth end of the first driving rod 212 can slide relative to the lifting rod 223; similarly, the sixth end of the second driving rod 213 is slidably hinged to the supporting rod 110, that is, the sixth end of the second driving rod 212 is hinged to the supporting rod 110, and the sixth end of the second driving rod 212 can slide relative to the lifting rod 223.

It can be understood that, when the driving cylinder 211 drives the first driving rod 212 and the second driving rod 213 to rotate relatively, the distance between the ends of the first driving rod 212 and the second driving rod 213 is changed, and by making the fourth end of the first driving rod 212 slidably hinged to the lifting rod 223 and making the sixth end of the second driving rod 213 slidably hinged to the supporting rod 110, when the driving cylinder 211 drives the first driving rod 212 and the second driving rod 213 to rotate relatively, the distance between the ends of the first driving rod 212 and the second driving rod 213 is changed, the first driving rod 212 and the second driving rod 213 can still be simultaneously hinged to the supporting rod 110 and the lifting rod 223, so that the lifting rod 223 can be stably driven to ascend or descend.

In some embodiments, the lifting rod 223 is provided with a first guide rail 2231 extending along a length direction thereof, the first guide rail 2231 is slidably connected with a first sliding block 2232, and a fourth end of the first driving rod 212 is hinged to the first sliding block, so that the fourth end of the first driving rod 212 is slidably hinged to the lifting rod 223. Wherein, the third end of the first driving rod 212 is hinged with the supporting rod 110.

Specifically, a first sliding groove (not shown in the figure) extending along the length direction is formed in the lower surface of the lifting rod 223, a first guide rail 2231 extending along the length direction of the lifting rod 223 is formed in the bottom surface of the first sliding groove, the first slider 2232 is slidably connected to the first guide rail 2231, and the first slider 2232 can slide along the length direction of the first guide rail 2231. A first hinge shaft (not shown) is extended from a side edge of the first slider along the arrangement direction of the two support rods 110, and a first hinge hole 2122 is formed in a side surface of the fourth end of the first driving rod 212, and the first hinge shaft is inserted into the first hinge hole 2122 of the fourth end of the first driving rod 212, so that the fourth end of the first driving rod 212 is hinged to the first slider 2232.

In addition, as shown in fig. 6, a second sliding groove 1101 extending along the length direction is formed on the upper surface of the support rod 110, a second hinge hole 1102 is formed on the inner sidewall of the second sliding groove 1101, a third hinge hole 2123 is formed on the side surface of the third end of the first drive rod 212, and a pin shaft is simultaneously inserted into the third hinge hole 2123 of the third end of the first drive rod 212 and the second hinge hole 1102 of the support rod 110, so that the third end of the first drive rod 212 is hinged to the support rod 110.

In some embodiments, the support rod 110 is provided with a second guide rail 1103 extending along the length direction thereof, the second guide rail 1103 is slidably connected with a second slider 1104, and the sixth end of the second driving rod 213 is hinged to the second slider 1104, so that the sixth end of the second driving rod 213 is slidably hinged to the support rod 110. Wherein, the fifth end of the second driving rod 213 is hinged with the lifting rod 223.

Specifically, a second guide rail 1103 extending in the longitudinal direction of the support bar 110 is provided on the bottom surface of the second chute 1101 of the support bar 110, and a second slider 1104 is slidably connected to the second guide rail 1103 and is slidable in the longitudinal direction of the second guide rail 1103. A second hinge shaft (not shown) extends from a side edge of the second slider 1104 along the arrangement direction of the two support rods 110, a fourth hinge hole 2131 is formed in a side surface of the sixth end of the second driving rod 213, and the second hinge shaft is inserted into the fourth hinge hole 2131 at the sixth end of the second driving rod 213, so that the sixth end of the second driving rod 213 is hinged to the second slider 1103.

As shown in fig. 3 and 4, a sixth hinge hole 2233 is formed on an inner side wall of the first sliding groove of the lifting rod 223, a fifth hinge hole 2132 is protruded on a side surface of the fifth end of the second driving lever 213, and a pin shaft is simultaneously inserted into the fifth hinge hole 2132 of the fifth end of the second driving lever 213 and the sixth hinge hole 2233 of the lifting rod 223, so that the fifth end of the second driving lever 213 is hinged to the lifting rod 223.

In some embodiments, the second driving rod 213 has a hinge point hinged to the first driving rod 212, a hinge portion 2133 extends from a side of the second driving rod 213 facing away from the supporting rod 110, the hinge portion 2133 is located between the hinge point and the fifth end of the second driving rod 213, one end of the driving cylinder 211 is hinged to the third end of the first driving rod 212, and the other end of the driving cylinder 211 is hinged to the hinge portion 2133. The driving cylinder 211 controls the first driving rod 212 and the second driving rod 213 to rotate relatively by contracting, so that a height difference between the third end of the first driving rod 212 and the fifth end of the second driving rod 213 is reduced, that is, the elevating platform 220 is controlled to descend. After the driving cylinder 211 is contracted to the limit position, the driving cylinder 211 still has a certain length, and the driving cylinder 211 is hinged to the hinge portion 2133 of the second driving rod 213 away from the supporting rod 110, so that after the driving cylinder 211 is contracted to the limit length, the height difference between the third end of the first driving rod 212 and the fifth end of the second driving rod 213 can be made as small as possible, and the height of the lifting platform 220 can be reduced as much as possible.

Specifically, the second driving rod 213 is provided with an avoiding hole 2134, the avoiding hole 2134 is located between the hinge point of the second driving rod 213 and the fifth end, the hinge portion 2133 is two side plates 2135 which are oppositely arranged and are distributed on two opposite sides of the avoiding hole 2134, and the movable end of the driving cylinder 211 penetrates through the avoiding hole 2134 and is hinged to the hinge portion 2133.

In some embodiments, the third end of the first driving rod 212 is hinged to one end of the supporting rod 110, and the first guide track 2231 on the lifting rod 223 is located at one end of the lifting rod 223 far from the hinged point; meanwhile, the second guide rail 1103 on the supporting rod 110 is disposed near the other end of the supporting rod 110, and the fifth end of the second driving rod 213 is hinged to one end of the lifting rod 223 far away from the first guide rail 2231. Therefore, the distance between the third end of the first driving rod 212 and the sixth end of the second driving rod 213 can be increased as much as possible, so that the lifting range of the lifting table 220 is increased, and the working stability of the lifting assembly 210 is improved.

In some embodiments, the drive cylinder includes, without limitation, a hydraulic cylinder, a pneumatic cylinder, and the like.

In some embodiments, the lifting device further includes a control module 230 connected to the lifting assembly, and the control module 230 is installed at an outer side of the supporting rod and used for controlling the lifting assembly 210 to drive the lifting platform 220 to lift.

The connection between the control module 230 and the lifting assembly 210 may be determined according to the structure of the lifting assembly 210. For example: when the lifting assembly 210 is driven by the hydraulic cylinder, the control module 230 may be provided therein with a hydraulic pump and a control circuit for controlling the hydraulic pump, the hydraulic pump is communicated with the hydraulic cylinder through a hydraulic pipe, and the control circuit controls the hydraulic pump to work so as to control the hydraulic cylinder to stretch and retract, thereby controlling the lifting assembly 210 to lift.

Of course, when the lifting assembly 210 is driven to lift by the motor, the control module 230 may be electrically connected to the motor in the lifting assembly 210 to control the motor and further control the lifting assembly 210 to lift.

In some embodiments, as shown in fig. 1 and 6, rollers 112 are respectively disposed at both ends of each supporting rod 110 to facilitate the movement of the lifting assembly 210.

In some embodiments, as shown in fig. 1 and 6, a pedal support structure 113 and a moving handle 114 are respectively provided at both ends of each support rod 111, and the pedal support structure 113 is used to extend downward when the lifting device is at rest and is supported on the ground to position the lifting device to prevent the lifting device from moving. When the lifting device needs to be moved, the pedal supporting structure 113 is controlled to be separated from the ground and released; the movable handle 114 is used for facilitating a worker to push or drag the lifting device, a limiting rod 115 connected in a rotating mode can be further arranged on the movable handle 114, the limiting rod 115 is rotated to form a fixed angle with the movable handle 114, for example, the limiting rod 115 is perpendicular to the movable handle 114, the limiting rod 115 can limit goods on the lifting platform 220, and the goods on the lifting platform 220 are prevented from sliding off from the side edge of the lifting platform 220. The pedal support structure 113 and the moving handle 114 are commonly used in the prior art, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again.

The lifting device provided by the embodiment of the invention is described in detail, a specific example is applied in the description to explain the principle and the implementation of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.