Lifting device and vehicle assembling equipment

Abstract

The invention discloses a lifting device and vehicle assembling equipment, and belongs to the technical field of lifting devices. The lifting device comprises a lifting table, a supporting piece, a driving piece and a connecting rod mechanism, and the driving piece is arranged on the supporting piece; the connecting rod mechanism comprises a driven branch chain and a linkage rod, the driven branch chain is provided with a first end and a second end which are opposite, the first end is hinged to the lifting table, the second end is hinged to the supporting piece, the driven branch chain comprises a plurality of driven rods which are sequentially arranged from the first end to the second end and hinged to one another, and one end of the linkage rod is hinged to the driving end of the driving piece. The other end of the linkage rod is hinged to at least one driven rod. The combined design of the driven branch chains and the linkage rods is adopted, so that the lifting device can achieve a larger stroke range, the lifting table is allowed to move in a larger range, the stroke of the lifting device is expanded, and the device structure is simplified.

Description

Technical Field

[0001] The present application belongs to the technical field of lifting devices, and in particular relates to a lifting device and a vehicle assembly device. Background Art

[0002] Lifting devices play a vital role in many fields, mainly used to lift, lower or move objects for subsequent operations. However, the travel design of the commonly used scissor lift mechanism has certain limitations, and usually requires additional structures to expand its travel range, making the structure complex and increasing the cost of the equipment. Summary of the invention

[0003] In view of the above problems, an embodiment of the present application provides a lifting device, which aims to expand the travel structure of the lifting device. Another object of the embodiment of the present application is to provide a vehicle assembly device having the above lifting device.

[0004] The embodiment of the present application provides a lifting device, which comprises:

[0005] Lifting platform;

[0006] Supports;

[0007] A driving member, disposed on the supporting member;

[0008] The connecting rod mechanism includes a driven branch chain and a connecting rod. The driven branch chain has a first end and a second end opposite to each other. The first end is hinged to the lifting platform, and the second end is hinged to the support member. The driven branch chain includes a plurality of driven rods arranged in sequence from the first end to the second end and hinged to each other. One end of the connecting rod is hinged to the driving end of the driving member, and the other end of the connecting rod is hinged to at least one driven rod.

[0009] In some embodiments, there are multiple driven branches and multiple connecting rods, one end of each connecting rod is hinged to the driving end of the driving member, and the other end of each connecting rod is hinged to a driven branch.

[0010] In some embodiments, the drive member comprises:

[0011] A driving part, arranged on the supporting member;

[0012] A transmission part connected to the driving part;

[0013] A connecting piece, an end of the transmission part away from the driving part is hinged to the connecting rod through the connecting piece.

[0014] In some embodiments, the coupling comprises:

[0015] The body is connected to an end of the transmission part away from the driving part;

[0016] A plurality of extension parts are arranged around the outer periphery of the main body, and each extension part is connected to the main body, and each extension part is hinged to the connecting rod in a one-to-one correspondence.

[0017] In some embodiments, a limiting boss is provided on one of two adjacent driven rods;

[0018] During the relative rotation of two adjacent driven rods, the two adjacent driven rods abut against each other through the limiting boss to achieve limiting.

[0019] In some embodiments, one end of the connecting rod hinged to the driven rod is hinged at a hinge point between two adjacent driven rods.

[0020] In some embodiments, a limiting boss is provided on the driven rod close to the support member among two adjacent driven rods, or

[0021] A limiting boss is provided on the connecting rod;

[0022] During the relative rotation of the connecting rod and the two adjacent driven rods, the connecting rod and the driven rod of the two adjacent driven rods close to the support member abut against each other through the limiting boss to achieve limiting.

[0023] In some embodiments, the support member comprises:

[0024] The bearing part is arranged opposite to the lifting platform, the driven branch chain is hinged to the bearing part, an avoidance hole is arranged on the bearing part, and the driving end of the driving member passes through the avoidance hole and is hinged to the connecting rod.

[0025] In some embodiments, the support member further comprises:

[0026] The fixing part is arranged on a side of the bearing part away from the lifting platform, and the driving member is connected to the fixing part;

[0027] A plurality of first connection parts are arranged between the fixing part and the bearing part, the plurality of first connection parts are arranged around the outer periphery of the avoidance hole, and the plurality of first connection parts are respectively connected to the fixing part and the bearing part.

[0028] In some embodiments, the support member further comprises:

[0029] The base portion is arranged on a side of the fixing portion away from the bearing portion, or

[0030] The base portion is arranged on a side of the lifting platform away from the bearing portion;

[0031] The plurality of second connection parts are arranged between the base part and the bearing part, and the plurality of first connection parts are respectively connected to the fixing part and the bearing part.

[0032] In some embodiments, the lifting device further comprises:

[0033] A guide member, one end of which is connected to the lifting platform, and the other end of which passes through the bearing part and is relatively slidably matched with the bearing part.

[0034] Correspondingly, an embodiment of the present application further proposes a vehicle assembly device, comprising the lifting device in the above embodiment.

[0035] The beneficial effect of the present application is that the present application provides a lifting device, which includes a lifting platform, a support, a driving member, and a connecting rod mechanism, wherein the driving member is arranged on the support; the connecting rod mechanism includes a driven branch chain and a connecting rod, the driven branch chain has a first end and a second end opposite to each other, the first end is hinged to the lifting platform, and the second end is hinged to the support, the driven branch chain includes a plurality of driven rods arranged in sequence from the first end to the second end and hinged to each other, one end of the connecting rod is hinged to the driving end of the driving member, and the other end of the connecting rod is hinged to at least one driven rod. The present application adopts a combined design of a driven branch chain and a connecting rod, so that the lifting device can achieve a larger travel range, allowing the lifting platform to move in a larger range, expanding the travel of the lifting device, and simplifying the device structure.

[0036] The vehicle assembly equipment of the embodiment of the present application includes all the technical features and technical effects of the above-mentioned lifting device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 A schematic diagram of the front view structure of a lifting device in a first state proposed in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of the side structure of a lifting device in a first state proposed in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of the front view structure of a lifting device in a second state proposed in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the side structure of a lifting device in a second state proposed in an embodiment of the present application;

[0042] Figure 5 A structural schematic diagram of a lifting device proposed in an embodiment of the present application;

[0043] Figure 6 This is a schematic diagram of the structure of the connecting rod mechanism proposed in the embodiment of the present application.

[0044] Figure markings: 10-lifting platform; 20-support member; 21-bearing part; 211-avoidance hole; 22-fixing part; 23-first connecting part; 24-base part; 25-second connecting part; 30-driving member; 31-driving part; 32-transmission part; 33-connecting member; 331-main body; 332-extension part; 40-connecting rod mechanism; 41-driven branch chain; 411-first end; 412-second end; 413-driven rod; 4131-limiting boss; 42-connecting rod; 50-guide member. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0046] In the description of the present application, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. The orientation or position relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0047] The present application provides a lifting device and a vehicle assembly device, which are described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0048] As the preamble of the embodiments of the present application, the lifting device plays a vital role in many fields, and is mainly used to lift, lower or move objects for subsequent operations. However, the commonly used scissor-type lifting mechanism has certain limitations in its stroke design, and usually requires additional structures to expand its stroke range, which makes the structure complex and increases the cost of the equipment. In addition, in some embodiments, the lifting device adopts a single set of drive devices, and drives the mechanism to perform lifting operations by side or center placement. When the single set of drive devices is side-placed, although the design is simplified to a certain extent, the bias of the driving force causes the mechanism to be unevenly distributed during the lifting process, which is easy to cause bending and fatigue deformation of the structural components under long-term operation, affecting the stability and durability of the equipment; and when the drive device adopts a center layout, although the force situation is optimized to a certain extent, the length of the lifting stroke is sacrificed, and the response speed is relatively slow. More importantly, during the entire lifting cycle, the drive device needs to operate continuously, which undoubtedly causes energy waste and reduced efficiency. Other embodiments adopt a design in which two sets of drive devices are placed on the side in order to improve performance by increasing the driving force. However, this design not only makes the structure more cumbersome and complicated, but also significantly increases the failure rate of the system. The synchronization and coordination of the two sets of drive devices are extremely high. Once a failure occurs, the difficulty of troubleshooting and repairing also increases. In addition, the complex structure also increases the cost and inconvenience of subsequent maintenance, posing a challenge to the long-term stable operation of the equipment.

[0049] In view of this, an embodiment of the present application provides a lifting device, aiming to overcome at least one of the above-mentioned technical problems.

[0050] See also Figures 1 to 6 As shown, an embodiment of the present application provides a lifting device, which includes: a lifting platform 10; a support member 20; a driving member 30, which is arranged on the support member 20; a connecting rod mechanism 40, including a driven branch chain 41 and a connecting rod 42, the driven branch chain 41 has a first end 411 and a second end 412 opposite to each other, the first end 411 is hinged to the lifting platform 10, and the second end 412 is hinged to the support member 20, the driven branch chain 41 includes a plurality of driven rods 413 arranged in sequence from the first end 411 to the second end 412 and hinged to each other, one end of the connecting rod 42 is hinged to the driving end of the driving member 30, and the other end of the connecting rod 42 is hinged to at least one driven rod 413.

[0051] It should be understood that the lifting platform 10 can be used as a platform for carrying the object to be lifted; the support member 20 constitutes the main frame of the lifting device, which can be responsible for supporting the entire device and the weight it carries to ensure that no deformation or overturning occurs during the lifting process; the driving member 30 can be used as a power source for the lifting device, and is arranged on the support member 20 to drive the connecting rod mechanism 40 to move; in the connecting rod mechanism 40, the driving member 30 is connected to the driven branch chain 41 through the connecting rod 42 to realize the transmission and conversion of power, so as to drive the driven branch chain 41 to move through the connecting rod 42. The driven branch chain 41 is one of the core transmission components of the lifting device. The mutual hinge connection of multiple follower rods 413 forms a transmission path with certain flexibility and adaptability, based on which the connecting rod 42 can drive the driven branch chain 41 to contract or extend; the first end 411 of the driven branch chain 41 is hinged to the lifting platform 10, and the second end 412 is hinged to the support member 20, so that the lifting platform 10 can realize the lifting movement under the driving action of the driving member 30; the connecting rod 42 serves as a connecting bridge between the driving member 30 and the driven branch chain 41, one end of the connecting rod 42 is hinged to the driving end of the driving member 30, and the other end is hinged to at least one driven rod 413 in the driven branch chain 41, thereby realizing the transmission and conversion of power.

[0052] Furthermore, when the driving member 30 is started, the driving end of the driving member 30 drives the connecting rod 42 to move, and then the movement of the connecting rod 42 pushes or pulls the driven rod 413 in the driven branch chain 41 that is hinged to the connecting rod 42, so that the driven branch chain 41 contracts to the second state or extends to the first state. It should be noted that the first state of the lifting device is the fully extended state of the driven branch chain 41, that is, the driven branch chain 41 extends to the maximum stroke, at this time the lifting platform 10 is farthest from the load-bearing part 21, and the second state of the lifting device is the fully retracted state of the driven branch chain 41, that is, the driven branch chain 41 contracts to the maximum stroke, at this time the lifting platform is closest to the load-bearing part 21; then relative rotational movement occurs between the multiple driven rods 413 in the driven branch chain 41, and relative rotational movement occurs between the driven branch chain 41 and the support member 20 and the lifting platform 10, and then based on the contraction or extension of the driven branch chain 41, the lifting platform 10 is driven to perform a lifting movement relative to the support member 20. It should be noted that relative rotational motion refers to rotation around the axis of the hinge point, and the present application is not limited to the hinge structure. Hinge structures such as pin hinge and fork hinge can be adopted, and the specific design can be based on the actual solution requirements.

[0053] Through the above technical solution, the present application adopts a combination design of a driven branch chain 41 and a connecting rod 42, so that the lifting device can achieve a larger range of travel, allowing the lifting platform 10 to move within a larger range, and because the driven branch chain 41 is formed by a plurality of driven rods 413 hinged to each other, when the driving member 30 is started, the driven rod 413 in the driven branch chain 41 is pushed or pulled by the connecting rod 42, so that the maximum travel of the lifting platform 10 can be the maximum length formed by the plurality of driven rods 413 hinged to each other, and the lifting device in the present application not only expands the travel of the lifting device, but also greatly simplifies the structure, and is composed of a lifting device consisting only of a driving member, a support member, and several connecting rods. The lifting device of the present application effectively reduces unnecessary components and complexity through the combination of the driven branch chain 41 and the connecting rod 42.

[0054] See also Figures 1 to 4 As shown, in some embodiments, there are multiple driven branch chains 41 and connecting rods 42, one end of each connecting rod 42 is hinged to the driving end of the driving member 30, and the other end of each connecting rod 42 is hinged to a driven branch chain 41.

[0055] It should be understood that in some embodiments of the present application, both the driven branch chain 41 and the connecting rod 42 can have one. In the case where both the driven branch chain 41 and the connecting rod 42 have one, one end of the connecting rod 42 is hinged to the driving end of the driving member 30, and the other end of the connecting rod 42 is hinged to the driven rod 413 in the driven branch chain 41. Furthermore, based on the fact that the two ends of the driven branch chain 41 are respectively hinged to the lifting platform 10 and the support member 20, when the driving member 30 is started, the driven rod 413 in the driven branch chain 41 is pushed or pulled by the connecting rod 42, thereby driving the driven branch chain 41 to contract or extend, so that the lifting platform 10 can be lifted and lowered relative to the support member 20.

[0056] In other embodiments, there may be multiple driven branch chains 41 and connecting rods 42, and one end of each connecting rod 42 is hinged to the driving end of the driving member 30, and the other end of each connecting rod 42 is hinged to a driven branch chain 41. Furthermore, the two ends of each driven branch chain 41 are arranged at different positions between the support member 20 and the lifting platform 10. When the driving member 30 is started, each connecting rod 42 can simultaneously push or pull the driven rod 413 in the corresponding driven branch chain 41, thereby driving the lifting platform 10 to perform lifting movement relative to the support member 20. It should be noted that there can be a one-to-one correspondence between the driven branch chain 41 and the connecting rod 42, that is, the number of driven branch chains 41 and the connecting rod 42 is the same, and each connecting rod 42 is hinged to a corresponding driven branch chain 41. In addition, the multiple driven branch chains 41 are evenly arranged on the support member 20 and the lifting platform 10, so that each driven branch chain 41 is evenly stressed during the lifting movement.

[0057] Through the above technical solution, the combination of multiple driven branch chains 41 and connecting rods 42 can provide multiple support points and force transmission paths during the lifting process, which helps to disperse stress and reduce the load of a single driven branch chain 41, thereby improving the structural stability of the entire lifting device. In addition, the coordinated work of multiple driven branch chains 41 and connecting rods 42 can significantly improve the load-bearing capacity of the lifting device.

[0058] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, in some embodiments, one end of the connecting rod 42 hinged to the driven rod 413 is hinged at a hinge point between two adjacent driven rods 413 .

[0059] It should be understood that the two adjacent driven rods 413 can rotate relative to each other through the rotating shaft at the hinge point between the two, and the driven rod 413 connected to the connecting rod 42 in the driven branch chain 41 can realize relative rotation with the adjacent mutually hinged driven rods 413 based on the hinge rotating shaft based on the movement of pulling or pushing the connecting rod 42, so that the driven branch chain 41 can be contracted or extended; and then the end at which the connecting rod 42 and the driven rod 413 are hinged is hinged at the hinge point between the two adjacent driven rods 413, that is, the end at which the connecting rod 42 and the driven rod 413 are hinged is hinged to the two adjacent driven rods 413. The driving rod 413, and then when the hinge point between two adjacent driven rods 413 is connected to the connecting rod 42, the two adjacent driven rods 413 will be simultaneously subjected to the pulling or pushing movement action transmitted by the connecting rod 42, and then based on the pulling or pushing movement action and the common hinged rotating shaft between them, the connecting rod 42 and the two adjacent hinged driven rods 413 will rotate with each other, so that the connecting rod 42 and the two adjacent driven rods 413 share the rotating shaft on the hinge point, and can realize relative rotation with each other, thereby improving the efficiency of the connecting rod 42 in transmitting power to the driven branch chain 41.

[0060] In some embodiments, the driven branch chain 41 may include more than two driven rods 413 hinged to each other, that is, multiple driven rods 413 are arranged in sequence from the first end 411 to the second end 412 and hinged to each other; specifically, one end of the first driven rod 413 is hinged to the lifting platform 10 as the first end 411, the end of the first driven rod 413 away from the lifting platform 10 is hinged to one end of the second driven rod 413, the end of the second driven rod 413 away from the first driven rod 413 is hinged to one end of the third driven rod 413, and so on, until the last driven rod 413, the end of the last driven rod 413 away from the previous driven rod 413 is hinged to the support member 20 as the second end 412.

[0061] In other embodiments, the driven branch chain 41 includes: two driven rods 413 hinged to each other, and one end of the two driven rods 413 away from the hinge point is respectively hinged to the lifting platform 10 and the support member 20. In the case of two driven branch chains 41 and two connecting rods 42, the lifting device has an H-shaped arrangement of the connecting rod mechanism 40 in the first state, that is, the two driven branch chains 41 and the two connecting rods 42 are symmetrically arranged along the axis of the driving member 30, and the multiple driven branch chains 41 are evenly arranged on the support member 20 and the lifting platform 10, so that each driven branch chain 41 is evenly stressed during the lifting movement.

[0062] Specifically, the driven branch chain 41 is arranged between the lifting platform 10 and the support member 20, one ends of the two driven rods 413 in the driven branch chain 41 are hinged to each other, and the other ends of the two driven rods 413 respectively serve as the first end 411 and the second end 412 of the driven branch chain 41, the first end 411 is hinged to the lifting platform 10, and the second end 412 is hinged to the support member 20; one end of the connecting rod 42 is hinged to the hinge point between the two driven rods 413, so that the connecting rod 42 and the two driven rods 413 share the rotating shaft on the hinge point, and can realize relative rotation with each other.

[0063] It should be understood that the driven branch chain 41 can be linear in the first state, and the straight line where the driven branch chain 41 is located is perpendicular to the lifting platform 10, so that the maximum lifting stroke of the lifting platform 10 is the maximum length formed after the multiple driven rods 413 are hinged and stretched to each other, which expands the stroke of the lifting device. In addition, in the first state of the driven branch chain 41, the connecting rod 42 is perpendicular to the driven branch chain 41, that is, the driven branch chain 41 and the connecting rod 42 are connected in a T shape, which enhances the stability and firmness in the first state. It should be noted that the length of the driven rod 413 in the driven branch chain 41 and the length of the connecting rod 42 can be designed according to the actual solution requirements, and the driven branch chain 41 can also be any retracted position in the first state, which is not perpendicular to the lifting platform 10, and the connecting rod 42 may not be perpendicular to the driven branch chain 41, which can be designed according to the actual solution requirements.

[0064] See also Figures 1 to 5 As shown, in some embodiments, the driving member 30 includes: a driving part 31, which is arranged on the support member 20; a transmission part 32, which is connected to the driving part 31; and a connecting member 33, and one end of the transmission part 32 away from the driving part 31 is hinged to the connecting rod 42 through the connecting member 33.

[0065] It should be understood that the drive unit 31 is usually responsible for providing the power source required by the lifting device, which can be an electric motor, a hydraulic cylinder, a pneumatic cylinder or other forms of drivers, depending on the design requirements and working environment of the lifting device. The drive unit 31 is usually installed on the support 20 to ensure its stability and reliability. The transmission unit 32 is connected between the drive unit 31 and the connecting rod 42, and plays the role of transmitting power and motion. The motion generated by the drive unit 31 can be converted into the motion form required by the connecting rod 42. In this application, the transmission unit 32 transmits the pushing or pulling power generated by the drive unit 31 to the connecting rod 42 through the transmission rod. The connecting member 33 serves as a connecting bridge between the transmission unit 32 and the connecting rod 42, ensuring that the power and motion generated by the transmission unit 32 can be smoothly transmitted to the connecting rod 42.

[0066] Furthermore, when the driving part 31 is started, the transmission part 32 transmits the pushing or pulling power generated by the driving part 31 to the connecting rod 42 through the connecting member 33. The connecting member 33 drives the connecting rod 42 to move in the pushing or pulling direction based on the hinge connection with the connecting rod 42. Then, the connecting rod 42 generates a pushing or pulling power to the driven branch chain 41 based on the hinge connection with the driven rod 413, thereby driving the lifting platform 10 to perform lifting movement. In the present application, the combination of the driving part 31 and the transmission part 32 in the driving member 30 provides the lifting device with higher functionality and flexibility, helps to achieve efficient power transmission and precise control of movement, and also improves the adaptability and maintainability of the lifting device.

[0067] See also Figures 1 to 4 ,as well as Figure 6 As shown, in some embodiments, the connecting member 33 includes: a main body 331, which is connected to one end of the transmission part 32 away from the driving part 31; a plurality of extension parts 332, which are arranged around the outer periphery of the main body 331, and each extension part 332 is connected to the main body 331, and each extension part 332 is hinged to the connecting rod 42 one by one.

[0068] It should be understood that the body 331 is the core part of the coupling 33, which is directly connected to the end of the transmission part 32 away from the driving part 31. The body 331 can be relatively fixedly connected to the end of the transmission part 32 away from the driving part 31, and serves as a connecting bridge between the transmission part 32 and the connecting rod 42, ensuring that the power and movement generated by the transmission part 32 can be smoothly transmitted to the coupling 33, and then transmitted to the connecting rod 42 through the extension 332 in the coupling 33. In addition, the extension 332 is arranged around the outer periphery of the body 331, and each extension 332 is firmly connected to the body 331, so that the coupling 33 can support and transmit power more stably. Each extension 332 is hinged to a connecting rod 42 in a one-to-one correspondence, so that multiple connecting rods 42 do not affect each other, so that the lifting device can achieve a larger range of travel. The number and layout of the extension 332 are usually determined according to the design requirements and working environment of the lifting device. For example, in applications that require a larger support area or a more complex motion trajectory, the number of extensions 332 may be increased or their layout may be changed.

[0069] It should be noted that, when both the driven branch chain 41 and the connecting rod 42 have one, the extension portion 332 has one, and the extension portion 332 is connected to the main body 331, and the extension portion 332 is hinged to the connecting rod 42, so that the power and movement generated by the transmission part 32 can be smoothly transmitted to the connecting member 33, and then transmitted to the connecting rod 42 through the extension portion 332 in the connecting member 33, thereby driving the lifting platform 10 to perform lifting movement.

[0070] See also Figure 6 As shown, in some embodiments, a limiting boss 4131 is provided on one of two adjacent driven rods 413 ; during the relative rotation of the two adjacent driven rods 413 , the two adjacent driven rods 413 abut against each other through the limiting boss 4131 to achieve limiting.

[0071] It should be understood that when the driving part 31 is started, the connecting rod 42 is hinged with the driven rod 413 to generate a pushing or pulling force on the driven branch chain 41, thereby driving the lifting platform 10 to perform a lifting movement. In this process, the driven rod 413 connected to the connecting rod 42 in the driven branch chain 41 and the adjacent driven rod 413 will rotate relative to each other based on the hinge shaft. Based on the solution requirements, it is necessary to limit the minimum distance between the lifting platform 10 and the load-bearing part 21, that is, it is necessary to control the retracted position of the lifting device in the second state. This can be achieved by providing a limiting boss 4131 on one of the two adjacent driven rods 413 , so that during the relative rotation and contraction process of two adjacent driven rods 413, the limiting boss 4131 abuts against the other of the two adjacent driven rods 413 to achieve the contraction limit and then stop the movement; it should be noted that the limiting boss 4131 is usually designed as a structure protruding from the surface of the driven rod 413, and its shape can be cylindrical, rectangular or other suitable shapes, depending on the required limiting effect and space restrictions; the size of the limiting boss 4131 should be accurately calculated to ensure that when the adjacent driven rods 413 rotate relative to each other, they can just abut and provide the required limiting force without causing excessive space occupation. Furthermore, it should be noted that the contraction limit can be controlled by adjusting the position of the limiting boss 4131 or the position of the limiting matching structure on the other driven rod 413 that abuts against the limiting boss 4131, thereby controlling the stroke of the lifting device.

[0072] In some embodiments, a limiting boss 4131 is provided on the driven rod 413 close to the support member 20 among two adjacent driven rods 413, or a limiting boss 4131 is provided on the connecting rod 42; during the relative rotation between the connecting rod 42 and the two adjacent driven rods 413, the connecting rod 42 and the driven rod 413 close to the support member 20 among the two adjacent driven rods 413 abut against each other through the limiting boss 4131 to achieve limiting.

[0073] It should be understood that, in the process of the lifting platform 10 approaching the support member 20, the pulling force between the two adjacent follower rods 413 based on the connecting rod 42 will be in a contracted state, that is, when the driving member 30 drives the follower rod 413 to move in the opposite direction of the position of the lifting platform 10, the driven branch chain 41 will contract, and the connecting rod 42 will gradually approach the follower rod 413 of the two adjacent follower rods 413 close to the support member 20 based on the hinged rotation, and then the contraction limit can be achieved by providing a limiting boss 4131 on the follower rod 413 of the two adjacent follower rods 413 close to the support member 20 or the connecting rod 42, so as to control the contraction position of the lifting device in the second state.

[0074] See also Figure 5As shown, in some embodiments, the support member 20 includes: a load-bearing portion 21, which is arranged opposite to the lifting platform 10, a driven branch chain 41 is hinged to the load-bearing portion 21, an avoidance hole 211 is provided on the load-bearing portion 21, and the driving end of the driving member 30 passes through the avoidance hole 211 and is hinged to the connecting rod 42.

[0075] It should be understood that the bearing part 21 in the support member 20 is arranged relative to the lifting platform 10 to form a stable support foundation. The connection requirements of the driven branch chain 41 are specially considered in the bearing part 21, so the corresponding hinge points are set so that the driven branch chain 41 can be firmly connected to the support member 20. In addition, the avoidance hole 211 is cleverly set on the bearing part 21, the main purpose of which is to meet the working stroke requirements of the driving member 30. Specifically, when the driving end of the driving member 30 needs to drive the connecting rod 42 to move, the avoidance hole 211 provides a necessary channel, so that the connecting rod 42 can smoothly pass through the support member 20, and realize effective connection and transmission with the driven branch chain 41 or other related components, so that the lifting stroke of the lifting device can be maximized, and then multiple driven branch chains 41 can be evenly arranged on the periphery of the avoidance hole 211, so that each driven branch chain 41 is evenly stressed during the lifting movement, and it is convenient for the contraction and extension of the driven branch chain 41.

[0076] See also Figures 1 to 5 As shown, in some embodiments, the support member 20 also includes: a fixing portion 22, which is arranged on the side of the bearing portion 21 away from the lifting platform 10, and the driving member 30 is connected to the fixing portion 22; a plurality of first connecting portions 23, which are arranged between the fixing portion 22 and the bearing portion 21, and the plurality of first connecting portions 23 are arranged around the outer periphery of the avoidance hole 211, and the plurality of first connecting portions 23 are respectively connected to the fixing portion 22 and the bearing portion 21.

[0077] It should be understood that the fixing portion 22 is arranged on the side of the bearing portion 21 away from the lifting platform 10, mainly to achieve a stable connection with the driving member 30, and to enable the driving member 30 to effectively drive the lifting process of the lifting platform 10, and then by fixing the driving member 30 on the fixing portion 22, the stability and reliability of the driving member 30 during the movement can be ensured, so as to effectively transmit power and control signals. In addition, a plurality of first connecting portions 23 are arranged between the fixing portion 22 and the bearing portion 21, and they are arranged around the periphery of the avoidance hole 211, playing a key role in connection and support. These first connecting portions 23 not only enhance the connection strength between the fixing portion 22 and the bearing portion 21, but also help to disperse stress and improve the bearing capacity and stability of the entire support member 20.

[0078] See also Figures 1 to 5As shown, in some embodiments, the support member 20 also includes: a base portion 24, which is arranged on a side of the fixing portion 22 away from the bearing portion 21, or the base portion 24 is arranged on a side of the lifting platform 10 away from the bearing portion 21; a plurality of second connecting portions 25, which are arranged between the base portion 24 and the bearing portion 21, and the plurality of first connecting portions 23 are respectively connected to the fixing portion 22 and the bearing portion 21.

[0079] It should be understood that by adding the base portion 24 and the multiple second connecting portions 25, the overall structure of the support member 20 is made more stable and reliable, so as to enhance the stability and load-bearing capacity of the entire mechanism. In addition, the base portion 24 can be a planar structure or a three-dimensional structure with multiple supporting points, depending on the needs and scenarios of the actual application. The multiple second connecting portions 25 are arranged between the base portion 24 and the bearing portion 21, and they play a key role in connection and support. In addition, it should be noted that if the base portion 24 is arranged on the side of the lifting platform 10 away from the bearing portion 21, then Figures 1 to 5 As shown, the driving member 30 pulls the connecting rod 42 upward from the first state, and the driven branch chain 41 contracts to move the lifting platform 10 upward to the load-bearing portion 21 until the second state. In addition, the driving member 30 pushes the connecting rod 42 downward from the second state, and the driven branch chain 41 extends to move the lifting platform 10 downward away from the load-bearing portion 21 until the first state, that is, the connecting rod 42 is perpendicular to the driven branch chain 41, and the driven branch chain 41 and the connecting rod 42 are connected to form a T shape; if the base portion 24 is set When the fixing portion 22 is disposed on a side away from the load-bearing portion 21, contrary to the attached figure, the lifting platform 10 is disposed on the upper part of the load-bearing portion 21, and the driving member 30 pulls the connecting rod 42 downward from the first state, and the driven branch chain 41 contracts to move the lifting platform 10 downward to the load-bearing portion 21 until the second state. In addition, the driving member 30 pushes the connecting rod 42 upward from the second state, and the driven branch chain 41 extends to move the lifting platform 10 upward away from the load-bearing portion 21 until the first state.

[0080] In some embodiments, the lifting device further includes: a guide member 50 , one end of which is connected to the lifting platform 10 , and the other end of the guide member 50 passes through the bearing portion 21 and is relatively slidably matched with the bearing portion 21 .

[0081] It should be understood that the other end of the guide member 50 passes through the bearing part 21 and slides relatively with the bearing part 21, and the bearing part 21 has a hole that cooperates with the guide member 50, so that the guide member 50 and the bearing part 21 slide relatively with each other; the addition of the guide member 50 significantly improves the stability and accuracy of the lifting platform 10 during the lifting process; one end of the guide member 50 is connected to the lifting platform 10, and the other end passes through the bearing part 21 and slides relatively with the bearing part 21, ensuring that the lifting platform 10 can move along a fixed path during the lifting process, avoiding deviation and shaking, thereby improving the stability and reliability of the entire lifting device. In the present application, the guide member 50 can be a guide column that passes through the bearing part 21 and slides relatively with the bearing part 21.

[0082] Accordingly, the present application also proposes a vehicle assembly device, including the lifting device in the above embodiment. It should be understood that the vehicle assembly device in the embodiment of the present application includes all the technical features and technical effects of the above lifting device, which will not be repeated here.

[0083] The above is a detailed introduction to a lifting device and a vehicle assembly device provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A lifting device, characterized in that: include: Lifting platform; Supports; A driving member, disposed on the supporting member; The connecting rod mechanism includes a driven branch chain and a connecting rod, wherein the driven branch chain has a first end and a second end opposite to each other, the first end is hinged to the lifting platform, and the second end is hinged to the supporting member, the driven branch chain includes a plurality of driven rods arranged in sequence from the first end to the second end and hinged to each other, one end of the connecting rod is hinged to the driving end of the driving member, and the other end of the connecting rod is hinged to at least one of the driven rods.

2. The lifting device according to claim 1, characterized in that: There are multiple driven branch chains and multiple connecting rods. One end of each connecting rod is hinged to the driving end of the driving member, and the other end of each connecting rod is hinged to one driven branch chain.

3. The lifting device according to claim 2, characterized in that: The driving member comprises: A driving part, arranged on the supporting member; A transmission part connected to the driving part; A connecting piece, wherein one end of the transmission part away from the driving part is hinged to the connecting rod through the connecting piece.

4. The lifting device according to claim 3, characterized in that: The connecting piece comprises: A body connected to an end of the transmission part away from the driving part; A plurality of extension parts are arranged around the outer periphery of the main body, and each of the extension parts is connected to the main body, and each of the extension parts is hinged to the linkage rod in a one-to-one correspondence.

5. The lifting device according to claim 1, characterized in that: A limiting boss is provided on one of the two adjacent driven rods; During the relative rotation of two adjacent driven rods, the two adjacent driven rods abut against each other through the limiting boss to achieve limiting.

6. The lifting device according to claim 1, characterized in that: One end of the connecting rod hinged to the driven rod is hinged at a hinge point between two adjacent driven rods.

7. The lifting device according to claim 6, characterized in that: A limiting boss is provided on the driven rod close to the support member among the two adjacent driven rods, or The linkage rod is provided with a limiting boss; During the relative rotation of the connecting rod and the two adjacent driven rods, the connecting rod and the driven rod of the two adjacent driven rods close to the support member abut against each other through the limiting boss to achieve limiting.

8. The lifting device according to claim 1, characterized in that: The support member comprises: The bearing part is arranged opposite to the lifting platform, the driven branch chain is hinged to the bearing part, an avoidance hole is arranged on the bearing part, and the driving end of the driving member passes through the avoidance hole and is hinged to the connecting rod.

9. The lifting device according to claim 8, characterized in that: The support member also includes: A fixing part, arranged on a side of the bearing part away from the lifting platform, and the driving member is connected to the fixing part; A plurality of first connection parts are arranged between the fixing part and the bearing part, the plurality of first connection parts are arranged around the outer periphery of the avoidance hole, and the plurality of first connection parts are respectively connected to the fixing part and the bearing part.

10. The lifting device according to claim 9, characterized in that: The support member also includes: A base portion is arranged on a side of the fixing portion away from the bearing portion, or The base portion is arranged on a side of the lifting platform away from the bearing portion; A plurality of second connection parts are arranged between the base part and the bearing part, and a plurality of the first connection parts are respectively connected to the fixing part and the bearing part.

11. The lifting device according to claim 8, characterized in that: Also includes: A guide member, one end of which is connected to the lifting platform, and the other end of which passes through the bearing portion and is relatively slidably matched with the bearing portion.

12. A vehicle assembly device, characterized in that: A lifting device comprising the lifting device according to any one of claims 1 to 11.

Images