CN113666299B

CN113666299B - Lifting device

Info

Publication number: CN113666299B
Application number: CN202010405067.9A
Authority: CN
Inventors: 安志奇
Original assignee: Shenzhen SF Taisen Holding Group Co Ltd
Current assignee: Shenzhen SF Taisen Holding Group Co Ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2023-06-16
Anticipated expiration: 2040-05-14
Also published as: CN113666299A

Abstract

The application provides a elevating gear, include: the underframe comprises two support rods which are arranged in parallel, wherein the two support rods are connected together through a connecting piece, and a first avoidance space is formed between the two support rods; the lifting mechanism comprises a lifting assembly and a lifting platform, wherein the lower end of the lifting assembly is connected with the underframe, the upper end of the lifting assembly is connected with the lifting platform so as to drive the lifting platform to ascend or descend, one surface of the lifting platform, which faces the underframe, is provided with a second avoidance space, when the lifting platform descends and approaches to the underframe, the lifting platform is at least partially accommodated in the first avoidance space, and the connecting piece is at least partially accommodated in the second avoidance space so as to reduce the height difference between the lifting platform and the ground as much as possible, so that the goods on the ground can be carried on the lifting platform or the goods on the lifting platform can be carried down.

Description

Lifting device

Technical Field

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

Background

With the rapid development of the logistics industry, the lifting device for carrying the goods is more and more frequently used, and particularly for logistics network points with platforms, the lifting device is generally used for carrying the goods, so that the carrying efficiency of the goods is improved. Taking a process of transporting goods on the ground into a boxcar by a lifting device as an example: the lifting platform of the lifting device is generally lowered firstly to enable the lifting platform to be close to the ground, goods are conveyed onto 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 truck carriage, and finally the goods on the lifting platform are pushed into the truck carriage.

However, in the conventional lifting device, even if the lifting platform is lowered to the limit position, a large height difference still exists between the lifting platform and the ground, and the cargo is not convenient enough to be transported from the ground to the lifting platform.

Disclosure of Invention

In one aspect, the present application provides a lifting device, which aims at improving the structure of the lifting device, so that after the lifting platform of the lifting device descends to a limit position, the height difference between the lifting platform and the ground is small, so that the goods on the ground can be conveniently carried onto the lifting platform, or the goods on the lifting platform can be conveniently carried down.

The application provides a elevating gear, elevating gear includes:

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 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, wherein the lifting assembly is connected with the lifting platform so as to drive the lifting platform to ascend or descend, one surface of the lifting platform, which faces the underframe, is provided with a second avoidance space, when the lifting platform descends and approaches the underframe, the lifting platform is at least partially accommodated in the first avoidance space, and the connecting piece is at least partially accommodated in the second avoidance space.

Optionally, the lifting mechanism comprises two lifting components, the lower ends of the two lifting components are respectively connected with the two supporting rods, and the upper ends of the two lifting components 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 the connecting rod, the space is dodged to the second includes a "V" type recess, the recess sets up the top of connecting rod and with the position of connecting rod is relative, the elevating platform is located the top in space is dodged to the first space of dodging and with the first space position of dodging is relative.

Optionally, the support plate comprises an inverted V-shaped carrier plate, and the apex angle θ of the carrier plate is 140 degrees to 175 degrees.

Optionally, the supporting plate further comprises two lapping plates, and the two lapping plates are respectively and movably connected to two ends of the bearing plate.

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

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

Optionally, the second driving rod has a hinge point hinged with the first driving rod; the one side that the second actuating lever deviates from the bracing piece stretches out there is the articulated part, the articulated part is located between the pin joint and the fifth end of second actuating lever, the one end of actuating cylinder with the third end of first actuating lever articulates, the other end of actuating cylinder with the articulated part articulates.

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 comprises a bottom frame and a lifting mechanism, wherein the bottom frame 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 table and a lifting assembly, the lifting assembly is connected with the lifting table to drive the lifting table to ascend or descend, and a second avoidance space is formed in one surface of the lifting table, which faces the underframe. Wherein, two bracing pieces with the connecting piece encloses and closes and to be formed with first space of dodging, works as the elevating platform descends and is close to when the chassis, the elevating platform at least part holding in first space of dodging, the connecting piece at least part holding in the second space of dodging to reduce the difference in height between elevating platform and the ground as far as possible, so that with subaerial goods transport to the elevating platform on, perhaps, with the goods transport on the elevating platform down.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

fig. 2 is a schematic structural view of an embodiment of a lifting platform of a lifting device provided in an embodiment of the present application after being lowered;

fig. 3 is a schematic structural diagram of an embodiment of a lifting platform according to 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 view of an embodiment of a lifting assembly according to an embodiment of the present disclosure;

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

A chassis 100; a support bar 110; a second chute 1101; a second hinge hole 1102; a second guide 1103 and a second slider 1104; a first avoidance space 111; a roller 112; a foot support structure 113; moving the 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 2121; a first hinge hole 2122; a third hinge hole 2123; a second driving lever 213; a fourth hinge hole 2131; a fifth hinge hole 2132; a hinge 2133; a relief hole 2134; side panels 2135; a lifting table 220; a second avoidance space 221; a support plate 222; a sub-support plate 2221; a fixing plate 2222; a connection plate 2223; strap 2224; a reinforcing plate 2225; a lifter 223; a first rail 2231; a first slider 2232; a sixth hinge hole 2233; a control module 230.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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 fall within the scope of the invention.

In the description of the present invention, it should 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 the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, the term "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 purposes 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 have not been described in detail so as not to obscure 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.

The embodiment of the application provides a lifting device, which is described in detail below.

Firstly, in the embodiment of the application, a lifting device is provided, the lifting device comprises a bottom frame and a lifting mechanism, the bottom 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 formed between the two support rods; the lifting mechanism comprises a lifting assembly and a lifting table, and the lifting assembly is connected with the lifting table to drive the lifting table to ascend or descend; the elevating platform has the second to dodge the space towards the one side of chassis, and when the elevating platform descends and is close to the chassis, the elevating platform at least partly holds in the first space of dodging, and the connecting piece at least partly holds in the second dodges the space.

Fig. 1 is a schematic structural diagram of an embodiment of a lifting mechanism of a lifting device provided in an embodiment of the present application after lifting. As shown in fig. 1, 2, 4 and 6, the lifting device includes a base frame 100 and a lifting mechanism 200. The chassis 100 includes two support rods 110 arranged in parallel, the two support rods 110 are connected together by a connecting piece 120, and a first avoidance space 111 is provided between the two support rods 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 with the lifting platform 220 to drive the lifting platform 220 to rise or fall, one surface of the lifting platform 220 facing the chassis 100 is provided with a second avoidance space 221, when the lifting platform 220 descends and approaches the chassis, the lifting platform is at least partially accommodated in the first avoidance space 111, and the connecting piece is at least partially accommodated in the second avoidance space.

Specifically, the chassis 100 has two first avoidance spaces 111, the two first avoidance spaces are respectively located at the left and right sides of the connecting piece 120, two ends of the two support rods 111 are spaced apart from each other to form two openings communicated with the two avoidance spaces 111, a second avoidance space 221 is formed on one surface of the lifting platform 220 facing the chassis 100, when the lifting assembly 210 controls the lifting platform 220 to descend to the lowest position, the connecting piece 120 can be contained in the second avoidance space 221 of the lifting platform 220, the lifting platform 220 can be contained in the first avoidance space 111, so that the height difference between the lifting platform 220 and the ground can be reduced as much as possible, and the goods on the ground can be conveniently carried onto the lifting platform 220 from the opening of the chassis 100, or the goods on the lifting platform 220 can be conveniently carried onto the ground from the opening of the chassis 100.

In addition, the goods may be articles, or may be a cage in which articles are placed, which is not limited herein.

Referring to fig. 1 and 5, in the embodiment of the present application, the lifting mechanism 200 includes two lifting assemblies 210, the lower ends of the two lifting assemblies 210 are respectively supported on the two support rods 110 of the chassis 100, and the upper ends of the two lifting assemblies 210 are respectively connected with the lifting platform 220 to drive the lifting platform 220 to rise or fall. Since the elevation assembly 210 includes the first driving rod 212 and the second driving rod 213 which are cross-hinged together, the lower ends of the first driving rod 212 and the second driving rod 213 are supported on the two supporting rods 110 of the bottom frame 100, respectively, and the upper ends of the first driving rod 212 and the second driving rod 213 are connected with the elevation table 220, so that a space formed between the two elevation assemblies 210 communicates with the first avoidance space 111 on the bottom frame 100, the elevation table 220 is located above the first avoidance space 110 and opposite to the position of the first avoidance space 110, and when the elevation assembly 210 drives the elevation table 220 to descend, the elevation assembly 210 is not located below the elevation table 220 but interferes with the elevation table, so that the bottom of the elevation table 220 can descend into the first avoidance space 111, thereby reducing the height difference between the elevation table 220 and the ground as much as possible, so as to facilitate the transportation of goods on the ground to the elevation table 220, or the goods on the elevation table 220.

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, so as to improve the connection stability between the lifting platform 220 and the lifting assemblies 210. Specifically, the support plate 222 includes a sub support plate 2221, and a first connection structure connecting the sub support plate 2221 and the lifting rods 223, and the height of the sub support plate 2221 is smaller than the height of the two lifting rods 223, so that the lifting rods 223 can have a limiting effect on the goods on the sub support plate 2221, and prevent the goods from sliding down from both sides of the sub support plate 222, and simultaneously, when the lifting assembly 210 drives the lifting platform 220 to descend, the sub support plate 2221 can be more close to the ground, thereby further reducing the height of the lifting platform 220. The two lifters 223 of the lifter 220 are disposed in parallel, the extending direction of the lifters 223 coincides with the extending direction of the lower support bar 110, and an installation space is formed between the lifters 223. The first connection structure of the support plate 222 includes two fixing plates 2222 supported above the two elevating rods 223 and fixedly connected with the elevating rods 223, a connection plate 2223 downwardly extends from a side of each fixing plate 2222 near the installation space, and opposite side edges of the sub support plate 2221 are fixedly connected with lower side edges of the two first connection plates 2241, respectively, so that the height of the sub support plate 2221 is smaller than that of the two elevating rods 223.

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

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

Referring to fig. 3 and 4, in the embodiment of the present application, the support plate 222 includes an inverted V-shaped sub-support plate 2221, and the vertex angle θ of the sub-support plate 2221 is 140 to 175 degrees, so that when the support plate 222 is lowered to the lowest height, the height difference between the two ends of the support plate 222 and the ground is as small as possible, for example, the two ends of the sub-support plate 2221 can be directly abutted against the ground, so as to facilitate loading and unloading of cargoes at the two ends of the support plate 222. It should be noted that, the vertex angle θ of the sub supporting plate 2221 refers to an angle formed by the inverted "V" shape sub supporting plate enclosing toward two side surfaces of the chassis, and the vertex angle may be a smooth vertex angle with a transition structure. Specifically, the sub supporting plate 2221 is of a symmetrical structure, the vertex angle θ of the sub supporting plate may be further selected to be 160 to 175 degrees, that is, the sub supporting plate 2221 is a small-angle inclined platform of a symmetrical structure, the sub supporting plate is designed to be a small-angle inclined platform of a symmetrical structure, one surface of the sub supporting plate facing the chassis 100 is provided with a V-shaped groove, and the groove forms a second avoiding space 221 to accommodate the connecting member 120 when the supporting plate descends and approaches the chassis 100, so as to avoid interference of the connecting member 120 on the lifting platform 220, and enable the lifting platform 220 to be accommodated in the first avoiding space 111 as much as possible. In the embodiment of the application, the sub-supporting plate 2221 is designed to be a small-angle inclined platform with a symmetrical structure, so that the cage can be quickly positioned on the supporting plate 222, meanwhile, the cage can not move along the length direction of the supporting plate in the lifting assembly 210 lifting or descending process of the cage on the driving supporting plate and the supporting plate, but the cage needs to be provided with an energy barrier larger than the energy barrier capable of crossing the top end of the slope to slide through the top end of the slope when the supporting plate is designed to be a small-angle inclined platform with a symmetrical structure, so that stable transmission of the cage on the supporting plate 222 is facilitated.

In some embodiments, the inverted "V" shaped sub-support plate 2221 with symmetrical structure may be formed directly by bending the plate-like structure, which is convenient for processing.

In this embodiment, the supporting plate 222 further includes two bridging plates 2224, and the two bridging plates 2224 are respectively movably connected to two ends of the sub-supporting plate 2221, so that loading and unloading can be conveniently performed through two ends of the supporting plate, and meanwhile, the cargo at two ends of the supporting plate has a limiting effect. Specifically, two bridging plates 2224 are rotatably connected to both ends of the sub supporting plate 2221, respectively, and the bridging plates 2224 can be rotated upward or downward around the ends of the sub supporting plate 2221 to form a transition structure having a certain angle, so that the cargo can be directly moved into the car or other high-level platform through the bridging plates 2224 without rotating the lifting device by a certain angle, thereby making the lifting platform 220 approach the car or other high-level platform. When the lifting assembly 210 drives the lifting platform 220 to lift or lower to the vicinity of the loading platform, the bridging plate 2224 can perform a certain transition function between the support plate 222 and the loading platform, so that the goods can be more conveniently carried from the ground to the support plate 222. For example, during loading of the cage, the cage may be pushed onto the support plate 222, then the bridging plates 2224 at both ends are folded, the lifting platform 220 and the cage are lifted to the height of the carriage by the lifting assembly 210, and then the bridging plates 2224 at one side of the loading are rotated to be bridged into the carriage, so that the cage is pushed into the carriage; after loading, the cage is pushed onto the support plate 222, the folding loading side of the overlap plate 2224 is rotated, then the cage is lowered to the ground, the unloading side of the overlap plate 2224 is rotated to overlap the ground, and the cage is pushed out of the support plate 222. Of course, in other embodiments of the present invention, it is also contemplated that the end of the support plate 222 may directly overlap the cabin or the floor without the additional provision of the overlap plate 2224.

In the embodiment of the present application, the support plate 222 further includes a plurality of reinforcing plates 2225 disposed 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 that are cross-hinged together, wherein two 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 relatively rotate, the overall height of the first driving rod 212 and the second driving rod 213 can be changed, and thus the height of the elevating platform 220 can be changed.

Wherein the first driving rod 212 and the second driving rod 213 are cross-hinged together means that the first driving rod 212 and the second driving rod 213 are cross-hinged with each other, and the first driving rod 212 and the second driving rod 213 are hinged together at the crossing so that the first driving rod 212 can rotate relative to the second driving rod 213.

Specifically, the outer side wall of the middle part of the first driving rod 212 is provided with a through hole 2121, the second driving rod 213 passes through the through hole 2121 to intersect with the first driving rod 212, and a bolt passes through the first driving rod 212 and the second driving rod 213 at the same time, so that the first driving rod 212 and the second driving rod 213 can be hinged together. The through hole 2121 on the first driving rod 212 extends along the length direction of the first driving rod 212, so that a minimum included angle formed by rotation of the first driving rod 212 and the second driving rod 213 is as small as possible, and the height of the lifting platform 220 driven to descend by the driving lifting assembly 210 is as small as possible.

In some embodiments, the first driving rod 212 includes opposite third and fourth ends, the third end of the first driving rod 212 being hinged with the supporting rod 110, the fourth end of the first driving rod 212 being slidably hinged with the lifting rod 223; the second driving rod 213 includes opposite fifth and sixth ends, 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 both 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 relatively rotate.

Wherein the sliding hinge of 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 with 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 is slidably movable with respect to the lifting rod 223.

It will be appreciated that when the driving cylinder 211 drives the first driving rod 212 and the second driving rod 213 to rotate relatively, the interval between the ends of the first driving rod 212 and the second driving rod 213 may be changed, and by slidably hinging the fourth end of the first driving rod 212 to the lifting rod 223 and slidably hinging the sixth end of the second driving rod 213 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 interval between the ends of the first driving rod 212 and the second driving rod 213 may be changed, and the first driving rod 212 and the second driving rod 213 may still remain hinged to the supporting rod 110 and the lifting rod 223 at the same time, thereby stably driving the lifting rod 223 to ascend or descend.

In some embodiments, a first rail 2231 extending along the length direction of the lifting rod 223 is provided on the lifting rod 223, and a first slider 2232 is slidably connected to the first rail 2231, so that the fourth end of the first driving rod 212 is hinged to the first slider, and thus 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 to the supporting rod 110.

Specifically, a first chute (not shown) extending along the length direction of the lifting rod 223 is formed on the lower surface of the lifting rod 223, a first rail 2231 extending along the length direction of the lifting rod 223 is formed on the bottom surface of the first chute, a first slider 2232 is slidably connected with the first rail 2231, and the first slider 2232 can slide along the length direction of the first rail 2231. A first hinge shaft (not shown) is protruded at a side of the first slider in an arrangement direction of the two support bars 110, and a first hinge hole 2122 is opened at a side surface of the fourth end of the first driving bar 212, and is inserted into the first hinge hole 2122 of the fourth end of the first driving bar 212 so that the fourth end of the first driving bar 212 is hinged with the first slider 2232.

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

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

Specifically, a second 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 rail 1103 so as to be slidable in the longitudinal direction of the second rail 1103. A second hinge shaft (not shown) is extended from the second slider 1104 along the side of the arrangement direction of the two support bars 110, and a fourth hinge hole 2131 is opened at the side surface of the sixth end of the second driving bar 213, and is inserted into the fourth hinge hole 2131 of the sixth end of the second driving bar 213 to hinge the sixth end of the second driving bar 213 with the second slider 1103.

As shown in fig. 3 and 4, a sixth hinge hole 2233 is formed in the inner side wall of the first chute of the elevation rod 223, a fifth hinge hole 2132 is formed in the side surface of the fifth end of the second driving rod 213, and a pin shaft is simultaneously inserted into the fifth hinge hole 2132 of the fifth end of the second driving rod 213 and the sixth hinge hole 2233 of the elevation rod 223 to hinge the fifth end of the second driving rod 213 with the elevation rod 223.

In some embodiments, the second driving rod 213 has a hinge point hinged with the first driving rod 212, and a hinge portion 2133 protrudes from a side of the second driving rod 213 facing away from the supporting rod 110, the hinge portion 2133 being located between the hinge point and the fifth end of the second driving rod 213, one end of the driving cylinder 211 being hinged with the third end of the first driving rod 212, and the other end of the driving cylinder 211 being hinged with the hinge portion 2133. The driving cylinder 211 controls the relative rotation of the first driving rod 212 and the second driving rod 213 by contraction, so that the 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 table 220 is controlled to descend. Since the driving cylinder 211 is still a certain length after being contracted to the limit position, the driving cylinder 211 is hinged to the hinge portion 2133 of the second driving rod 213 on the side away from the supporting rod 110, and when 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, so that the height of the lifting table 220 can be reduced as much as possible.

Specifically, the second driving rod 213 is provided with an avoidance hole 2134, the avoidance hole 2134 is located between the hinge point and the fifth end of the second driving rod 213, the hinge portion 2133 is two opposite side plates 2135, and the two opposite sides of the avoidance hole 2134 are distributed, and the movable end of the driving cylinder 211 passes through the avoidance 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 an end of the lifting rod 223 away from the hinge point; meanwhile, the second guide 1103 on the support bar 110 is disposed close to the other end of the support bar 110, and the fifth end of the second driving lever 213 is hinged to the end of the lifting lever 223 remote from the first guide 2231. This makes it possible to increase the distance between the third end of the first driving lever 212 and the sixth end of the second driving lever 213 as much as possible, thereby increasing the lifting width of the lifting table 220 and improving the operation stability of the lifting assembly 210.

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

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

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

Of course, when the lifting assembly 210 is lifted by the motor, the control module 230 may be electrically connected to the motor in the lifting assembly 210 to control the motor, thereby controlling the lifting assembly 210 to lift.

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

In some embodiments, as shown in fig. 1 and 6, a foot support structure 113 and a moving handle 114 are respectively provided at both ends of each support bar 111, and the foot support structure 113 is used to protrude downward when the lifting device is stationary 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 support structure 113 is controlled to be separated from the ground; the movable handle 114 is used for facilitating a worker to push or drag the lifting device, the movable handle 114 can be further provided with a limiting rod 115 which is rotatably connected, 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, and the limiting rod 115 can limit the goods on the lifting platform 220 to prevent the goods on the lifting platform 220 from sliding from the side edge of the lifting platform 220. The pedal support structure 113 and the shifter handle 114 are commonly used in the prior art, and will not be described herein.

In the foregoing embodiments, the descriptions of the embodiments are focused on, and the portions of one embodiment that are not described in detail in the foregoing embodiments may be referred to in the foregoing detailed description of other embodiments, which are not described herein again.

The foregoing has described in detail a lifting device according to embodiments of the present invention, and specific examples have been set forth herein to illustrate the principles and embodiments of the present invention, the above examples being provided only to assist in understanding the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.

Claims

1. A lifting device, characterized in that the lifting device comprises:

the underframe comprises two support rods which are arranged in parallel, wherein 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;

2. The lifting device according to claim 1, wherein the lifting mechanism comprises two lifting components, lower ends of the two lifting components are respectively connected with the two support rods, and upper ends of the two lifting components are respectively connected with the lifting platform.

3. The lifting device of claim 2, wherein the lifting table includes two lifting bars supported at upper ends of the two lifting assemblies, respectively, and a support plate connected between the two lifting bars.

4. The lift device of claim 1, wherein the connecting member is a connecting rod, the second avoidance space includes a "V" shaped recess disposed above and opposite the connecting rod, and the lift platform is disposed above and opposite the first avoidance space.

5. A lifting device according to claim 3, wherein the support plate comprises an inverted "V" shaped carrier plate having a top angle θ of 140 degrees to 175 degrees.

6. The lifting device of claim 5, wherein the support plate further comprises two bridging plates, the two bridging plates being movably connected to two ends of the carrier plate, respectively.

7. The lifting device of claim 5, wherein the support plate further comprises a plurality of stiffening plates disposed along a length of the carrier plate.

8. A lifting device according to claim 3, wherein the lifting assembly comprises a drive cylinder, and first and second drive rods cross-hinged together, the first drive rod comprising a third end hinged to the support rod and a fourth end slidably hinged to the lifting rod, the second drive rod comprising a fifth end hinged to the lifting rod and a sixth end slidably hinged to the support rod, the ends of the drive cylinder being hinged to the first and second drive rods, respectively, to drive the first and second drive rods to rotate relative to each other.

9. The lifting device of claim 8, wherein the second drive rod has a hinge point hinged with the first drive rod; the one side that the second actuating lever deviates from the bracing piece stretches out there is the articulated part, the articulated part is located between the pin joint and the fifth end of second actuating lever, the one end of actuating cylinder with the third end of first actuating lever articulates, the other end of actuating cylinder with the articulated part articulates.

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