Lifting device and transport vehicle

Abstract

The embodiment of the application provides a lifting device and a transport vehicle, and belongs to the technical field of warehouse logistics. The lifting device comprises: a driving member; a first crank, which is arranged on an output shaft of the driving member; a connecting rod, which is hinged to the first crank; a connecting rod assembly, which is hinged to the connecting rod, and the driving member drives the connecting rod assembly to lift through the first crank and the connecting rod; and a supporting mechanism, which is hinged to the connecting rod, and part of the supporting mechanism rotates synchronously with the first crank to jointly support the connecting rod with the first crank. A load acts on the connecting rod assembly, the connecting rod assembly transmits the force to the connecting rod, and then the connecting rod acts the force on the first crank and the supporting mechanism, so that the load of the first crank is reduced by the supporting mechanism, the load of the driving member is reduced, and the service life of the driving member is prolonged.

Description

Technical Field

[0001] This application relates to the field of warehousing and logistics technology, and in particular to a lifting device and a transport vehicle. Background Technology

[0002] Automated Guided Vehicles (AGVs) are widely used in automated warehousing, intelligent manufacturing, and logistics sorting systems. They are equipped with lifting devices that can lift goods from the ground and transport them to a target height.

[0003] In the prior art, a lifting device is installed between the moving part and the lifting part of a transport vehicle. The lifting device includes a drive component, a connecting rod, and a four-bar linkage. The drive component is mounted on the moving part, and its output end has a crank connected to the connecting rod, forming a crank-connecting rod mechanism. The four-bar linkage is mounted on the moving part and connected to the connecting rod, and the lifting part is mounted on the four-bar linkage. Thus, the drive component drives the crank to rotate, which in turn drives the four-bar linkage via the connecting rod, causing the four-bar linkage to move and lift the lifting part.

[0004] However, the loads of the cargo, platform, four-bar linkage, and connecting rods are all directly applied to the drive components through the crank, resulting in a large load on the drive components. Utility Model Content

[0005] This application provides a lifting device and a transport vehicle to solve the problem of large load on the drive components of existing lifting devices.

[0006] In a first aspect, embodiments of this application provide a lifting device, including:

[0007] Drive components;

[0008] The first crank is mounted on the output shaft of the drive unit;

[0009] A connecting rod, which is hinged to the first crank;

[0010] A connecting rod assembly is hinged to a connecting rod, and a drive unit drives the connecting rod assembly to move up and down via a first crank and a connecting rod.

[0011] The support mechanism is hinged to the connecting rod, and part of the support mechanism rotates synchronously with the first crank to support the connecting rod together with the first crank.

[0012] In one possible implementation, the lifting device provided in this application embodiment includes a support mechanism comprising:

[0013] Support base;

[0014] A support assembly is rotatably mounted on a support base and hinged to a connecting rod.

[0015] The support assembly is configured to rotate synchronously with the first crank.

[0016] In one possible implementation, the lifting device provided in this application includes a support component comprising:

[0017] A support shaft is mounted on a support base.

[0018] The second crank is rotatably mounted on the support shaft and is hinged to the connecting rod.

[0019] In one possible implementation, the lifting device provided in this application embodiment has its support shaft and output shaft coaxially arranged.

[0020] In one possible implementation, the lifting device provided in this application embodiment further includes a connecting shaft, a connecting hole is provided on the connecting rod, the connecting shaft is rotatably inserted into the connecting hole, and both the first crank and the second crank are connected to the connecting shaft.

[0021] In one possible implementation, the lifting device provided in this application embodiment has a connecting shaft parallel to the output shaft.

[0022] In one possible implementation, the lifting device provided in this application embodiment has a connecting shaft integrally formed with at least one of the first crank and the second crank.

[0023] In one possible implementation, the lifting device provided in this application includes a linkage assembly comprising:

[0024] The first link, and the two first links are set to rotate at intervals;

[0025] The second link, the two second links are hinged to the two first links in a one-to-one correspondence;

[0026] The stabilizer bar is hinged at the joint between the first link and the second link.

[0027] The connecting rod is hinged to at least one of the first link, the second link, and the stabilizer.

[0028] In one possible implementation, the lifting device provided in this application embodiment further includes a guide rail component in the linkage assembly, and the guide rail component is slidably connected to the stabilizer rod along the lifting direction of the linkage assembly.

[0029] In one possible implementation, the lifting device provided in this application embodiment has at least two sets of linkage assemblies spaced apart;

[0030] At least one set of linkage assemblies is hinged to the connecting rod and connected to the support mechanism via the connecting rod.

[0031] Secondly, embodiments of this application provide a transport vehicle, including a transport vehicle body and a lifting device disposed on the transport vehicle body.

[0032] The lifting device and transport vehicle provided in this application include a lifting component, a connecting rod, a linkage assembly, and a support mechanism. A first crank on the driving component is connected to the linkage assembly via the connecting rod, and the support mechanism is also connected to the connecting rod, enabling the support mechanism and the first crank to jointly support the connecting rod. Thus, the load acts on the linkage assembly, which transmits the force to the connecting rod, which then applies the force to the first crank and the support mechanism. This reduces the load on the first crank by utilizing the support mechanism, thereby reducing the load on the driving component and extending its service life. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0034] Figure 1 This is a schematic diagram of the installation of the lifting device provided in the embodiments of this application;

[0035] Figure 2 for Figure 1 A structural schematic diagram of the central lifting device from another perspective;

[0036] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0037] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0038] Figure 5 for Figure 3 A simplified schematic diagram of the lifting device.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100 - Lifting device;

[0041] 110 - Drive component; 111 - Output shaft; 112 - First crank;

[0042] 120 - Connecting rod; 121 - Connecting hole;

[0043] 130 - Link assembly; 131 - First link; 132 - Second link; 133 - Stabilizer bar; 134 - Guide rail;

[0044] 140 - Support mechanism; 141 - Support seat; 142 - Support assembly; 1421 - Support shaft; 1422 - Second crank;

[0045] 150 - Connecting shaft;

[0046] 200-Mobile Department;

[0047] 300 - Lifting section.

[0048] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the absence of conflict, the following embodiments and features can be combined with each other.

[0050] In the prior art, a lifting device is installed between the moving part and the lifting part of a transport vehicle. The lifting device includes a drive component, a connecting rod, and a four-bar linkage. The drive component is mounted on the moving part, and its output end has a crank connected to the connecting rod, forming a crank-connecting rod mechanism. The four-bar linkage is mounted on the moving part and connected to the connecting rod, and the lifting part is mounted on the four-bar linkage. Thus, the drive component drives the crank to rotate, which in turn drives the four-bar linkage via the connecting rod, causing the four-bar linkage to move and lift the lifting part.

[0051] However, the loads of the cargo, platform, four-bar linkage, and connecting rods are all applied to the output shaft of the drive unit through the crank, which means that the drive unit must both output torque and withstand radial pressure, resulting in a large load on the drive unit.

[0052] To overcome the deficiencies in the prior art, the lifting device and transport vehicle provided in this application include a lifting device comprising a driving component, a connecting rod, a linkage assembly, and a support mechanism. A first crank on the driving component is connected to the linkage assembly via the connecting rod, and the support mechanism is also connected to the connecting rod, enabling the support mechanism to support the connecting rod together with the first crank. Thus, the load acts on the linkage assembly, which transmits the force to the connecting rod, which then applies the force to the first crank and the support mechanism. This reduces the load on the first crank by utilizing the support mechanism, thereby reducing the load on the driving component and extending its service life.

[0053] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the present invention.

[0054] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this application embodiment provides a lifting device 100, including:

[0055] Drive component 110;

[0056] The first crank 112 is disposed on the output shaft 111 of the drive member 110;

[0057] Connecting rod 120, which is hinged to the first crank 112;

[0058] The connecting rod assembly 130 is hinged to the connecting rod 120, and the driving member 110 drives the connecting rod assembly 130 to rise and fall through the first crank 112 and the connecting rod 120.

[0059] The support mechanism 140 is hinged to the connecting rod 120. Part of the support mechanism 140 rotates synchronously with the first crank 112 to support the connecting rod 120 together with the first crank 112.

[0060] It is understood that the first crank 112 is mounted on the output shaft 111 of the drive component 110, which can convert the rotational motion output by the drive component 110 into oscillation, rotation, or reciprocating motion within a planar range. The drive component 110 can be a stepper motor or similar device. After the motor is powered on, it generates rotational motion, which is transmitted to the first crank 112 through the output shaft 111, thereby driving the first crank 112 to perform circular motion. The first crank 112 is hinged to the connecting rod 120, and the connecting rod 120 is hinged to the connecting rod assembly 130. The connecting rod 120, as an intermediate component connecting the first crank 112 and the connecting rod assembly 130, can transmit the power and motion of the first crank 112 to the connecting rod assembly 130. This allows the first crank 112 to transmit its circular motion to the connecting rod 120 through the hinge point, causing the connecting rod 120 to produce corresponding reciprocating translational motion under the rotation of the first crank 112, thereby driving the connecting rod assembly 130 to achieve the lifting function.

[0061] The support mechanism 140 is hinged to the connecting rod 120, and part of the support mechanism 140 rotates synchronously with the first crank 112. Furthermore, the support mechanism 140 and the first crank 112 jointly support the connecting rod 120, effectively distributing the force borne by the first crank 112 and ensuring the motion accuracy and stability of the entire device. During lifting, the first crank 112 is subjected to the load of the connecting rod assembly 130. The support mechanism 140 reduces the possibility of the first crank 112 swaying or deforming, maintaining the normal operation of the lifting device 100. Simultaneously, the synchronous rotation of part of the support mechanism 140 with the first crank 112 better adapts to the movement of the first crank 112, improving the support effect.

[0062] Therefore, the lifting device 100 provided in this application embodiment includes a driving member 110, a connecting rod 120, a connecting rod assembly 130, and a support mechanism 140. The first crank 112 on the driving member 110 is connected to the connecting rod assembly 130 via the connecting rod 120, and the support mechanism 140 is also connected to the connecting rod 120, so that the support mechanism 140 and the first crank 112 can jointly support the connecting rod 120. In this way, the load is applied to the connecting rod assembly 130, and the connecting rod assembly 130 transmits the force to the connecting rod 120, and then the connecting rod 120 applies the force to the first crank 112 and the support mechanism 140. Thus, the support mechanism 140 reduces the load on the first crank 112, thereby reducing the load on the driving member 110 and extending the service life of the driving member 110.

[0063] In some embodiments, refer to Figure 3 , Figure 4 and Figure 5 As shown, the support mechanism 140 includes:

[0064] Support 141;

[0065] Support assembly 142 is rotatably mounted on support base 141 and hinged to connecting rod 120;

[0066] The support assembly 142 is configured to rotate synchronously with the first crank 112.

[0067] The support base 141 provides a stable mounting foundation for the entire support mechanism 140. It can be fixed to a mounting surface, such as the moving part 200 of the transport vehicle, thereby connecting the support mechanism 140 to the external structure. At the same time, the drive component 110 can also be mounted on the support base 141. In this way, the support base 141 can withstand the weight and load of the support assembly 142 and the connected connecting rod 120 and linkage assembly 130, preventing the support mechanism 140 from shifting or shaking during operation, thus ensuring the stability and reliability of the entire lifting device 100.

[0068] The support assembly 142 is rotatably mounted on the support base 141, so that the support assembly 142 can adapt to the circular motion of the first crank 112. When the first crank 112 rotates, the support assembly 142 can rotate synchronously with the first crank 112, reducing the restriction on the movement of the connecting rod 120, ensuring that the connecting rod 120 can smoothly transmit power and realize the lifting function of the connecting rod assembly 130.

[0069] The support assembly 142 is hinged to the connecting rod 120, thereby providing an additional support point for the connecting rod 120. During lifting, through the hinged connection with the support assembly 142, the force borne by the connecting rod 120 can be distributed to the support assembly 142 and then transmitted to the support base 141, reducing the stress deformation of the connecting rod 120, improving the service life of the connecting rod 120, and also enhancing the stability of the entire device.

[0070] Furthermore, refer to Figure 2 , Figure 3 and Figure 4 As shown, the support component 142 includes:

[0071] Support shaft 1421 is mounted on support base 141;

[0072] The second crank 1422 is rotatably mounted on the support shaft 1421 and is hinged to the connecting rod 120.

[0073] The support shaft 1421 is mounted on the support base 141, providing a stable rotation axis for the second crank 1422. This ensures that the second crank 1422 can rotate around a fixed axis, giving the entire support assembly 142 a deterministic and stable motion. During the operation of the lifting device 100, the support shaft 1421 can transmit the force borne by the second crank 1422 to the support base 141, effectively distributing the force.

[0074] The second crank 1422 is rotatably mounted on the support shaft 1421 and rotates synchronously with the first crank 112. This synchronous rotation allows the second crank 1422 to work in conjunction with the first crank 112 to jointly support the connecting rod 120. When the first crank 112 drives the connecting rod 120 to move, the second crank 1422 can provide support force to the connecting rod 120 on the opposite side of the connecting rod 120 relative to the first crank 112, ensuring the balance and stability of the connecting rod 120 during movement.

[0075] In specific implementation, refer to Figure 3 , Figure 4 and Figure 5 As shown, the support shaft 1421 and the output shaft 111 are coaxially arranged.

[0076] Since the support shaft 1421 is coaxial with the output shaft 111, the second crank 1422 on the support shaft 1421 and the first crank 112 on the output shaft 111 rotate around the same central axis. When the lifting device 100 is running, the first crank 112 rotates under the drive of the output shaft 111, while the second crank 1422, which rotates synchronously with the first crank 112, is mounted on the support shaft 1421. The support shaft 1421 is coaxial with the output shaft 111, which ensures that the rotation of the first crank 112 and the second crank 1422 is strictly synchronized. This ensures that the two cranks move in a coordinated manner during the support and drive of the connecting rod 120, avoiding problems such as uneven force, shaking, or even jamming of the connecting rod 120 caused by asynchronous rotation, and ensuring the smoothness and stability of the entire lifting device 100.

[0077] Furthermore, coaxial configuration makes the transmission process more direct and efficient. Compared to non-coaxial configurations, which may require additional transmission components (such as gears, chains, etc.) to achieve synchronization, coaxial configurations reduce intermediate transmission links, lower energy loss and mechanical wear during transmission, and improve the energy utilization efficiency and service life of the entire device.

[0078] Furthermore, the coaxial arrangement allows for a more compact and rational spatial layout of the support mechanism 140 and the drive mechanism, enhancing the structural stability of the entire device. When subjected to large loads, the coaxial support assembly 142 structure can better transfer the load force to the support base 141, reducing vibration and displacement caused by uneven force distribution.

[0079] Furthermore, in some embodiments, reference is made to Figure 4 As shown, the lifting device 100 also includes a connecting shaft 150, a connecting hole 121 is provided on the connecting rod 120, the connecting shaft 150 is rotatably inserted into the connecting hole 121, and the first crank 112 and the second crank 1422 are both connected to the connecting shaft 150.

[0080] The connecting shaft 150 is rotatably inserted into the connecting hole 121 of the connecting rod 120. The first crank 112 and the second crank 1422 are both connected to the connecting shaft 150, forming an efficient power transmission path. When the driving component 110 drives the first crank 112 to rotate, the power of the first crank 112 can be smoothly transmitted to the connecting rod 120 through the connecting shaft 150. At the same time, the second crank 1422 can also work in coordination with the first crank 112 through the connecting shaft 150 to jointly drive the connecting rod 120 to move. This reduces energy loss during transmission and improves the power transmission efficiency of the entire lifting device 100.

[0081] Both the first crank 112 and the second crank 1422 are connected to the connecting shaft 150, ensuring that the movements of the first crank 112 and the second crank 1422 act synchronously on the connecting rod 120. During the lifting and lowering process, the first crank 112 and the second crank 1422 rotate around their respective rotation centers. The connecting shaft 150 ensures that the force and movement they exert on the connecting rod 120 are consistent, avoiding problems such as shaking or jamming of the connecting rod 120 due to asynchronous movements. This ensures that the connecting rod assembly 130 can achieve smooth and precise lifting and lowering movements.

[0082] Furthermore, the connection shaft 150 allows for a more even distribution of force on the connecting rod 120 during movement. The first crank 112 and the second crank 1422 are connected to the connecting rod 120 via the connection shaft 150, dispersing the force originally concentrated at the hinge point on the connecting rod 120 to the contact surfaces of the connection shaft 150 and the connecting rod 120, the connection surface of the connection shaft 150 and the first crank 112, and the contact surface of the connection shaft 150 and the second crank 1422, thus reducing the risk of localized stress concentration. This helps reduce wear on the connecting rod 120 and the connection shaft 150, extending their service life, and also improves the overall mechanical performance and reliability of the lifting device 100.

[0083] Furthermore, in some embodiments, reference is made to Figure 3 and Figure 4 As shown, the connecting shaft 150 is parallel to the output shaft 111.

[0084] It is understandable that the output shaft 111 is usually the direct output component of the power source, and the first crank 112 rotates under the drive of the output shaft 111. When the connecting shaft 150 is parallel to the output shaft 111, the power transmitted from the first crank 112 to the connecting shaft 150 can be more stable and efficient, and the direction of force transmission is relatively stable, reducing the dispersion and loss of force caused by angular deviation, ensuring that the power can be smoothly transmitted from the output shaft 111 through the first crank 112 to the connecting shaft 150, thereby driving the connecting rod 120 and the connecting rod assembly 130 to achieve lifting and lowering movements.

[0085] Furthermore, in some embodiments, reference is made to... Figure 3 and Figure 4 As shown, the connecting shaft 150 is integrally formed with at least one of the first crank 112 and the second crank 1422.

[0086] The one-piece molded structure eliminates the connection interface between the connecting shaft 150 and the crank, avoiding the decrease in strength caused by problems such as loosening or wear of the connection parts.

[0087] In this embodiment, the first crank 112 and the connecting shaft 150 are integrally formed. In other embodiments, the second crank 1422 may also be integrally formed with the connecting shaft 150; or both the first crank 112 and the second crank 1422 may be integrally formed with the connecting shaft 150, and the connecting rod 120 may be a spliced ​​or openable structure so that the connecting rod 120 can be connected with the connecting shaft 150.

[0088] Furthermore, in some embodiments, reference is made to Figure 3 , Figure 4 and Figure 5 As shown, the linkage assembly 130 includes:

[0089] The first link 131 is set to rotate at intervals;

[0090] The second link 132, the two second links 132 are hinged to the two first links 131 in a one-to-one correspondence;

[0091] Stabilizer bar 133 is hinged at the hinge point of first link 131 and second link 132;

[0092] The connecting rod 120 is hinged to at least one of the first connecting rod 131, the second connecting rod 132, and the stabilizer rod 133.

[0093] The first link 131, the second link 132, and the stabilizer 133 form a parallelogram-shaped four-bar linkage. The stabilizer 133 is hinged at the hinge point of the first link 131 and the second link 132 to stabilize the linkage assembly 130. During the operation of the lifting device 100, the first link 131 and the second link 132 will rotate and swing. The stabilizer 133 limits the relative range of motion of the first link 131 and the second link 132, making their movement more regular and stable, thereby ensuring the stability of the entire linkage assembly 130 during the lifting process.

[0094] Furthermore, refer to Figure 5 As shown, the linkage assembly 130 also includes a guide rail 134, which is slidably connected to the stabilizer bar 133 along the lifting direction of the linkage assembly 130.

[0095] During the lifting and lowering process of the linkage assembly 130, the stabilizer bar 133 slides along the guide rail 134. The guide rail 134 constrains the stabilizer bar 133, effectively limiting its displacement and swaying in the horizontal direction. This ensures that the entire linkage assembly 130 maintains vertical linear motion during lifting and lowering, avoiding left-right swaying and making the lifting and lowering process more stable.

[0096] In practice, at least two sets of linkage assemblies 130 are spaced apart.

[0097] At least one set of link assemblies 130 is hinged to the connecting rod 120 and connected to the support mechanism 140 through the connecting rod 120.

[0098] For example, a set of driving members 110, first crank 112 and support mechanism 140 may be provided and connected to a set of connecting rod assemblies 130; at least two sets of connecting rod assemblies 130 may be provided and each may be connected to a set of driving members 110, first crank 112 and support mechanism 140; at least two sets of connecting rod assemblies 130 and at least two sets of driving members 110, first crank 112 and support mechanism 140 may be provided and connected one-to-one. This application does not limit this.

[0099] Multiple linkage assemblies 130 can jointly bear the load acting on the lifting device 100. When a heavy object needs to be lifted, the load will be distributed to each linkage assembly 130, avoiding excessive force on a single linkage assembly 130, thereby improving the load-bearing capacity of the entire lifting device 100.

[0100] At least two sets of linkage assemblies 130 are spaced apart, which allows the connecting rod 120 to be subjected to more balanced forces during movement. During lifting and lowering, the forces exerted by each linkage assembly 130 on the connecting rod 120 are coordinated with each other, reducing the swaying and offset of the connecting rod 120 and making the entire lifting and lowering process more stable.

[0101] This application also provides a transport vehicle, including a transport vehicle body and a lifting device 100 disposed on the transport vehicle body.

[0102] The lifting device 100 has been described in the above embodiments and will not be repeated here.

[0103] The transport vehicle body includes a moving part 200 and a lifting part 300. A lifting device 100 is mounted on the moving part 200, and the lifting part 300 is mounted on the lifting device 100. The lifting device 100 drives the lifting part 300 to move relative to the moving part 200.

[0104] The transport vehicle provided in this application embodiment includes a lifting device 100 comprising a drive component 110, a connecting rod 120, a connecting rod assembly 130, and a support mechanism 140. A first crank 112 on the drive component 110 is connected to the connecting rod assembly 130 via the connecting rod 120. Similarly, the support mechanism 140 is connected to the connecting rod 120, enabling the support mechanism 140 to jointly support the connecting rod 120 with the first crank 112. Thus, when a load is applied to the connecting rod assembly 130, the connecting rod assembly 130 transmits the force to the connecting rod 120, which then applies the force to the first crank 112 and the support mechanism 140. This reduces the load on the first crank 112 by utilizing the support mechanism 140, thereby reducing the load on the drive component 110 and extending its service life.

[0105] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0106] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0107] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0108] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lifting device, characterized in that, include: Drive components; A first crank, which is disposed on the output shaft of the drive member; A connecting rod, which is hinged to the first crank; A connecting rod assembly hinged to a connecting rod, wherein the driving member drives the connecting rod assembly to move up and down via the first crank and the connecting rod; A support mechanism is hinged to the connecting rod, and a portion of the support mechanism rotates synchronously with the first crank to jointly support the connecting rod with the first crank.

2. The lifting device according to claim 1, characterized in that, The supporting structure includes: Support base; A support assembly, which is rotatably mounted on the support base and hinged to the connecting rod; The support assembly is configured to rotate synchronously with the first crank.

3. The lifting device according to claim 2, characterized in that, The support components include: A support shaft is disposed on the support base; The second crank is rotatably mounted on the support shaft and is hinged to the connecting rod.

4. The lifting device according to claim 3, characterized in that, The support shaft is coaxially arranged with the output shaft.

5. The lifting device according to claim 3, characterized in that, It also includes a connecting shaft, and the connecting rod is provided with a connecting hole. The connecting shaft is rotatably inserted into the connecting hole, and the first crank and the second crank are both connected to the connecting shaft.

6. The lifting device according to claim 5, characterized in that, The connecting shaft is parallel to the output shaft.

7. The lifting device according to claim 5, characterized in that, The connecting shaft is integrally formed with at least one of the first crank and the second crank.

8. The lifting device according to any one of claims 1-7, characterized in that, The linkage assembly includes: The first link, and the two first links are rotated at intervals; The second link, the two second links are hinged to the two first links in a one-to-one correspondence; A stabilizer bar, which is hinged to the hinge joint of the first link and the second link; The connecting rod is hinged to at least one of the first connecting rod, the second connecting rod, and the stabilizing rod.

9. The lifting device according to claim 8, characterized in that, The linkage assembly also includes a guide rail, which is slidably connected to the stabilizer rod along the lifting direction of the linkage assembly.

10. The lifting device according to any one of claims 1-7, characterized in that, The linkage assembly is provided in at least two sets at intervals; At least one set of the connecting rod assemblies is hinged to the connecting rod and connected to the support mechanism via the connecting rod.

11. A transport vehicle, characterized in that, It includes a transport vehicle body and a lifting device as described in any one of claims 1-10, which is mounted on the transport vehicle body.

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