Jacking device suitable for economical shuttle vehicle

Abstract

A jacking device suitable for an economical shuttle vehicle comprises a connecting rod assembly and at least two lifting bases synchronously driven through the connecting rod assembly. The lifting base comprises a top connecting base, a lifting body and a bottom connecting base which are sequentially hinged from top to bottom. The connecting rod assembly is connected to the middle of the lifting body. The lifting body is composed of two hinged lifting arms, the ends of the two lifting arms are hinged in an overlapped mode, and the two ends of the lifting body are located on the same plane all the time. A crank connecting rod assembly for pushing and pulling the connecting rod assembly is arranged at the end part of the connecting rod assembly; compared with the prior art, by arranging the two lifting arms with the ends hinged in the overlapped mode, it is guaranteed that the lifting arms are not affected by the other hinged lifting arm in the hinging process, and the hinging strength between the two lifting arms is guaranteed; meanwhile, under the effect that the two ends of the lifting body are always located on the same plane, the stress position of the top connecting base and the stress position of the bottom connecting base are always located on the same plane, and overall stable stress is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of shuttle cars, and particularly relates to a lifting device applicable to an economic shuttle car. Background Art

[0002] As a load-carrying device in warehousing logistics equipment, shuttle cars mainly have two forms in warehousing logistics equipment: shuttle car type in-out warehouse system and shuttle car type warehousing system. They are trolleys running on fixed tracks in a reciprocating or looped manner to transport goods to designated locations or connecting equipment. They are equipped with an intelligent induction system that can automatically remember the origin position and an automatic deceleration system.

[0003] When a lifting mechanism needs to be installed on a shuttle car, the existing traditional shuttle car lifting mechanisms mainly adopt a hydraulic system or an electric screw mechanism. Among them, the hydraulic system drives a hydraulic cylinder through hydraulic oil to realize the functions of lifting and lowering the cargo platform. Its advantages are strong load-bearing capacity, suitable for large cargo platforms; relatively stable operation; and can work under high load and high height conditions. However, the hydraulic system may require more maintenance and upkeep; the system complexity is high, installation and debugging require professional skills, and its own cost is too high.

[0004] The electric screw mechanism drives a screw through a motor, and a nut moves along the screw to lift or lower the cargo platform. However, in actual use, the load-bearing capacity may be relatively lower than that of the hydraulic system; the speed is generally slow and not suitable for applications requiring high-speed lifting and lowering.

[0005] Chinese Patent Application No. CN201210116458.4 discloses a lifting mechanism for a shuttle car, which includes a lifting base fixed on the bottom frame of the shuttle car and a lifting top seat fixedly connected to the tray top plate and located above the lifting base; a pair of synchronous gears with the rotation centers on the same horizontal line are respectively arranged in the lifting base and the lifting top seat, and the rotation centers of the synchronous gears are respectively fixedly connected to one ends of a pair of lower swing arms and a pair of upper swing arms. The other ends of the pair of lower swing arms and the pair of upper swing arms are respectively hinged; one of the pair of hinged joints of the pair of lower swing arms and the pair of upper swing arms is hinged to one end of a driving link, and the other end of the driving link is hinged to the outer end of a crank driven by a speed reduction output power device.

[0006] The above-mentioned disclosed shuttle car is connected through the hinged upper swing arm and lower swing arm, and the height of the lifting top seat is controlled by adjusting the hinged angle between the upper swing arm and the lower swing arm. Since the end of the upper swing arm is sleeved inside the end of the lower swing arm, the sizes of the end of the upper swing arm and the end of the lower swing arm are restricted by the installation space. Moreover, when the end of the lower swing arm is deformed by force, it is easy to cause the abutment between the end of the upper swing arm and the end of the lower swing arm, affecting the hinged effect between the upper swing arm and the lower swing arm. Summary of the Utility Model

[0007] The utility model aims to overcome the defects in the above-mentioned prior art and provides a lifting device applicable to an economic shuttle car, which has a simple structure and reliable connection.

[0008] To achieve the above utility model purpose, the utility model adopts the following technical scheme: a lifting device applicable to an economic shuttle car, comprising a connecting rod assembly and at least two lifting seats synchronously driven by the connecting rod assembly; the lifting seat comprises a top connecting seat, a lifting main body and a bottom connecting seat which are sequentially hinged from top to bottom, and the connecting rod assembly is connected to the middle of the lifting main body; the lifting main body is composed of two hinged lifting arms, the ends of the two lifting arms are overlapped and hinged, and the two ends of the lifting main body are always in the same plane; a crank connecting rod assembly for pushing and pulling the connecting rod assembly is arranged at the end of the connecting rod assembly.

[0009] As a preferred scheme of the utility model, the lifting arm is composed of a first arm, a bending section and a second arm which are sequentially connected, and the first arm and the second arm are arranged in parallel.

[0010] As a preferred scheme of the utility model, the second arm of the lifting arm is hinged to the first arm of the adjacent lifting arm.

[0011] As a preferred scheme of the utility model, the first arm of the lifting arm is always in the same vertical plane as the second arm of the hinged lifting arm.

[0012] As a preferred scheme of the utility model, the second arm of the lifting arm is always overlapped with the first arm of the hinged lifting arm.

[0013] As a preferred scheme of the utility model, a lateral support seat is connected to one of the lifting seats, and the lateral support seat and the crank connecting rod assembly are arranged on opposite sides of the lifting seat.

[0014] As a preferred scheme of the utility model, the lateral support seat comprises a support main body and a support connecting rod hinged to the top of the support main body, and the top connecting seat is hinged to the end of the support connecting rod.

[0015] As a preferred scheme of the utility model, a connecting shaft is arranged between the two hinged lifting arms, and the connecting rod assembly is connected to the connecting shaft.

[0016] As a preferred scheme of the utility model, the connecting rod assembly is composed of two parallel push-pull connecting rods, and the two push-pull connecting rods are respectively connected to the two ends of the connecting shaft.

[0017] As a preferred scheme of the utility model, the crank connecting rod assembly comprises a rotating shaft and a crank arm connected to the end of the rotating shaft, a driving connecting rod for connecting the connecting rod assembly is arranged on the crank arm, and a push-pull shaft connected to the driving connecting rod is arranged on the connecting rod assembly.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows: By providing two lifting arms with overlapping and hinged ends, it is ensured that the lifting arms are not affected by the other lifting arm during the hinging process, and the hinging strength between the two lifting arms is ensured; at the same time, under the action that the two ends of the lifting body are always in the same plane, the force-bearing positions of the top connecting seat and the bottom connecting seat are always in the same plane, which is convenient for the overall stable force-bearing and ensures the stable lifting of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view of the utility model;

[0020] Figure 2 is the structural schematic diagram of the utility model;

[0021] Figure 3 is Figure 2 the partial enlarged view of A in

[0022] Figure 4 is the structural schematic diagram of the lifting seat;

[0023] Figure 5 is the front view of the lifting seat;

[0024] Figure 6 is the structural schematic diagram of the lifting arm;

[0025] Reference numerals: connecting rod assembly 1, push-pull connecting rod 11, push-pull shaft 12, lifting seat 2, top connecting seat 21, lifting body 22, bottom connecting seat 23, lifting arm 24, connecting shaft 25, first support arm 26, bending section 27, second support arm 29, crank connecting rod assembly 3, rotating shaft 31, crank arm 32, driving connecting rod 33, lateral support seat 4, support body 41, support connecting rod 42. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will describe in detail the embodiments of the utility model with reference to the drawings.

[0027] As Figures 1-6 shown, a jacking device applicable to an economic shuttle car includes a connecting rod assembly 1 and at least two lifting seats 2 synchronously driven by the connecting rod assembly 1; the lifting seat 2 includes a top connecting seat 21, a lifting body 22 and a bottom connecting seat 23 hinged in sequence from top to bottom, and the connecting rod assembly 1 is connected to the middle of the lifting body 22; the lifting body 22 is composed of two hinged lifting arms 24, the ends of the two lifting arms 24 are overlapped and hinged, and the two ends of the lifting body 22 are always in the same plane; a crank connecting rod assembly 3 with a push-pull connecting rod 11 is provided at the end of the connecting rod assembly 1.

[0028] The number of the lifting seats 2 is set according to actual needs. A number of lifting seats 2 are arranged in a row along the length direction of the connecting rod assembly 1. Under the action of the same connecting rod assembly 1, the lifting of a number of lifting seats 2 is realized synchronously, so that the jacking effect is realized under the synchronous lifting action of a number of lifting seats 2.

[0029] The lifting main body 22 is deformed under the driving action of the connecting rod assembly 1. The bottom connecting seat 23 is always in a relatively static state under the hinge connection with the lifting main body 22, and through the deformation of the lifting main body 22, the distance between the bottom connecting seat 23 and the top connecting seat 21 is changed, so that the lifting of the lifting seat 2 is realized through the lifting of the top connecting seat 21.

[0030] The lifting arm 24 is composed of a first arm 26, a bending section 27 and a second arm 28 which are connected in sequence. The first arm 26 and the second arm 28 are arranged in parallel. Under the action of the bending section 27, the dislocation of the first arm 26 and the second arm 28 in the same direction is realized.

[0031] The second arm 28 of the lifting arm 24 is hinged to the first arm 26 of the adjacent lifting arm 24. At this time, the second arm 28 of the lifting arm 24 overlaps with the first arm 26 of the adjacent lifting arm 24, and the hinge connection of the two lifting arms 24 is not affected by the end dimensions.

[0032] The first arm 26 of the lifting arm 24 is always in the same vertical plane as the second arm 28 of the hinged lifting arm 24, so as to ensure that the force-bearing positions of the top connecting seat 21 and the bottom connecting seat 23 are always in the same vertical plane, and to ensure the stability of the overall lifting seat 2 during the lifting process.

[0033] A lateral support seat 4 is connected to one of the lifting seats 2. The lateral support seat 4 and the crank connecting rod assembly 3 are arranged on the opposite sides of the lifting seat 2. Under the action of the lateral support seat 4 and the crank connecting rod assembly 3, the deformed structure of the lifting main body 22 is supported. While the crank connecting rod assembly 3 drives the structure of the lifting main body 22, under the self-locking action of the crank connecting rod assembly 3 itself, the deformed lifting main body 22 is supported, and the lateral support seat 4 is always hinged to the top connecting seat 21, and the lifting main body 22 is supported by supporting the top connecting seat 21.

[0034] The lateral support seat 4 includes a support main body 41 and a support connecting rod 42 hinged to the top of the support main body 41. The top connecting seat 21 is hinged to the end of the support connecting rod 42.

[0035] Since the top connecting seat 21 only moves up and down in the vertical direction, and the support link 42 rotates relative to the support body 41 and the support link 42 as the center of the circle, it can meet the requirement that the up and down movement of the top connecting seat 21 drives the rotation of the support link 42 synchronously, and the abutment of the support link 42 against the pin shaft on the support body 41 can offset the pressure received by the top connecting seat 21.

[0036] A connecting shaft 25 is provided between the two articulated lifting arms 24. The link assembly 1 is connected to the connecting shaft 25. The link assembly 1 is composed of two parallel push-pull links 11, and the two push-pull links 11 are respectively connected to both ends of the connecting shaft 25.

[0037] Under the pushing and pulling action of the two push-pull links 11, the stable force on the connecting shaft 25 is realized, thereby realizing the stable force deformation of the link assembly 1.

[0038] The crank-link assembly 3 includes a rotating shaft 31 and a crank arm 32 connected to the end of the rotating shaft 31. A driving link 33 for connecting the link assembly 1 is provided on the crank arm 32, and a push-pull shaft 12 connected to the driving link 33 is provided on the link assembly 1.

[0039] During actual use:

[0040] When the lifting seat 2 is in the highest lifting position, the driving link 33 and the crank arm 32 are on the same straight line, and the crank arm 32 is arranged along the extension line of the driving link 43. At this time, the two lifting arms 24 are in the vertical state, and the top connecting seat 21, the connecting shaft 25 and the bottom connecting seat 23 are on the same vertical line.

[0041] The gravity received by the top connecting seat 21 can be directly transmitted through the two lifting arms 24 to the bottom connecting seat 23. At this time, the lateral force received by the lifting seat 2 is small. The relatively arranged lateral support seats 4 and the crank-link assembly 3 only need a small force to support the vertical state of the two lifting arms 24, and under the action of the lateral support seats 4 and the crank-link assembly 3, the vertical state of the two lifting arms 24 is limited and supported.

[0042] At this time, under the supporting action of the lateral support seats 4 and the crank-link assembly 3, self-locking of the lifting body 22 at the highest lifting position can be realized.

[0043] When the lifting seat 2 is in the lowest lifting position, the driving link 33 and the crank arm 32 are on the same straight line, and the crank arm 32 and the driving link 33 are partially overlapped. At this time, an articulated angle is formed between the two lifting arms 24, and the connecting shaft 15 is located on one side of the top connecting seat 21 and the bottom connecting seat 23.

[0044] The gravity received by the top connecting seat 21 is transmitted to the bottom connecting seat 23 through two lifting arms 24. Since the connecting shaft 15 is located on one side of the top connecting seat 21 and the bottom connecting seat 23, the lifting seat 2 will receive a relatively large lateral force, and it is necessary to support this lateral force through the lateral support seat 4 and the crank - connecting rod assembly 3, so as to offset this lateral force.

[0045] The crank - connecting rod assembly 3 supports the lateral force generated by the connecting shaft 25 by adjusting the relative positions of the locking crank arm 32 and the driving connecting rod 33. At the same time, the lateral support seat 4 supports and tightens the downward movement of the top connecting seat 21, reducing the lateral pressure of the connecting shaft 25 on the crank - connecting rod assembly 3, and ensuring the stable setting of the overall lifting seat 2.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0047] Although the terms such as connecting rod assembly 1, push - pull connecting rod 11, push - pull shaft 12, lifting seat 2, top connecting seat 21, lifting body 22, bottom connecting seat 23, lifting arm 24, connecting shaft 25, first support arm 26, bending section 27, second support arm 29, crank - connecting rod assembly 3, rotating shaft 31, crank arm 32, driving connecting rod 33, lateral support seat 4, support body 41, support connecting rod 42 and other terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A lifting device applicable to an economic shuttle car, comprising a connecting rod assembly (1) and at least two lifting seats (2) synchronously driven by the connecting rod assembly (1); characterized in that, The lifting seat (2) includes a top connecting seat (21), a lifting main body (22), and a bottom connecting seat (23) that are sequentially hinged from top to bottom. The link assembly (1) is connected to the middle of the lifting main body (22). The lifting main body (22) is composed of two hinged lifting arms (24). The ends of the two lifting arms (24) are overlapped and hinged, and the two ends of the lifting main body (22) are always in the same plane. The end of the link assembly (1) is provided with a crank link assembly (3) that pushes and pulls the link assembly (1).

2. The lifting device applicable to an economic shuttle car according to claim 1, wherein The lifting arm (24) is composed of a first arm (26), a bent section (27), and a second arm (28) that are sequentially connected. The first arm (26) and the second arm (28) are arranged in parallel.

3. The lifting device for an economy shuttle car according to claim 2, wherein, The second arm (28) of the lifting arm (24) is hinged to the first arm (26) of the adjacent lifting arm (24).

4. The lifting device applicable to an economic shuttle car according to claim 2, characterized in that, The first arm (26) of the lifting arm (24) is always in the same vertical plane as the second arm (28) of the hinged lifting arm (24).

5. The lifting device for an economy shuttle car according to claim 2, wherein, The second arm (28) of the lifting arm (24) is always overlapped with the first arm (26) of the hinged lifting arm (24).

6. The lifting device for an economic shuttle car according to claim 1, characterized in that, A lateral support seat (4) is connected to one of the lifting seats (2). The lateral support seat (4) and the crank link assembly (3) are arranged on opposite sides of the lifting seat (2).

7. The lifting device for an economic shuttle car according to claim 6, wherein, The lateral support seat (4) includes a support main body (41) and a support link (42) hinged to the top of the support main body (41). The top connecting seat (21) is hinged to the end of the support link (42).

8. The lifting device for an economy shuttle car according to claim 1, characterized in that, A connecting shaft (25) is provided between the two hinged lifting arms (24). The link assembly (1) is connected to the connecting shaft (25).

9. The lifting device for an economy shuttle car according to claim 8, characterized in that, The link assembly (1) is composed of two parallel push-pull links (11). The two push-pull links (11) are respectively connected to the two ends of the connecting shaft (25).

10. The lifting device for an economic shuttle car according to claim 1, wherein, The crank link assembly (3) includes a rotating shaft (31) and a crank arm (32) connected to the end of the rotating shaft (31). A driving link (33) for connecting the link assembly (1) is provided on the crank arm (32). A push-pull shaft (12) connected to the driving link (33) is provided on the link assembly (1).

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