Suspension mechanism, lifting device and vehicle

Abstract

The utility model provides a suspension mechanism, a lifting device and a vehicle, and relates to the technical field of transmission equipment. The suspension mechanism comprises a movable pipe, a fixed pipe, a driving rod, a limiting piece, a locking assembly and an unlocking piece. When the driving rod drives the movable pipe to be away from the fixed pipe, the locking assembly on the movable pipe is separated from the unlocking piece on the fixed pipe, the unlocking piece relieves limitation on the locking assembly, and therefore part of the locking assembly can enter the movable pipe and is connected with the limiting piece, the movable pipe is locked on the driving rod, and the cab is prevented from being out of control and turning backwards. When the driving rod drives the movable pipe to move towards the fixed pipe, under the action of the unlocking piece of the locking assembly, the movable pipe is withdrawn and separated from the limiting piece, so that limitation on the driving rod is relieved, the cab can move relative to the lifting device, and the situation that the lifting device is damaged due to stress when the cab floats up and down is avoided.

Description

Technical Field

[0001] This application relates to the field of transmission equipment technology, and in particular to a suspension mechanism, a lifting device, and a vehicle. Background Technology

[0002] A truck consists of a cab and a body connected to the cab. A lifting device is installed between the cab and the body to enable actions such as lifting and tilting the cab.

[0003] In related technologies, the lifting device includes a drive component and a telescopic assembly. The drive component is fixed to the truck body, and the two ends of the telescopic assembly are connected to the cab and the drive component, respectively. Under the action of the drive component, the telescopic assembly performs actions such as extending and retracting to achieve the tilting and lifting of the cab.

[0004] However, when a truck travels on bumpy roads, the cab is prone to bobbing up and down. Since the lifting mechanism is connected to the cab and the chassis at both ends, it is easy for the lifting device to be damaged by stress. Utility Model Content

[0005] This application provides a suspension mechanism, a lifting device, and a vehicle to solve the problem that the lifting device is easily damaged when the truck cab floats up and down.

[0006] In a first aspect, the suspension mechanism provided in the embodiments of this application includes a movable tube, a fixed tube, a drive rod, a limiting member, a locking assembly, and an unlocking member;

[0007] The drive rod is set inside the fixed tube and is used to connect with the drive assembly of the lifting device. At least part of the fixed tube is slidably set inside the movable tube. The limiting member is slidably set inside the movable tube and connected to the drive rod. The locking assembly is set on the movable tube and the unlocking member is set on the fixed tube.

[0008] The locking component is configured such that when the drive rod drives the movable tube away from the fixed tube, it separates from the unlocking component, extends into the movable tube, and connects with the limiting component to restrict the movement of the drive rod relative to the movable tube; when the drive rod drives the movable tube toward the fixed tube, it exits the movable tube under the action of the unlocking component and separates from the limiting component to release the restriction on the drive rod.

[0009] In one possible implementation, the suspension mechanism provided in this application embodiment includes a locking component comprising a support member, a locking member, and a first elastic member;

[0010] The support is mounted on the movable tube and forms an installation cavity with the movable tube. The locking member is slidably mounted in the installation cavity. The first elastic member is mounted in the installation cavity and is located between the locking member and the support.

[0011] The locking element is configured such that, under the action of the first elastic element, it extends into the movable tube and connects with the limiting element; when the unlocking element extends into the mounting cavity, it exits the movable tube under the action of the unlocking element and separates from the limiting element.

[0012] In one possible implementation, the suspension mechanism provided in this application embodiment has a first guide portion on the locking member and a second guide portion on the unlocking member, with the first guide portion and the second guide portion being provided correspondingly.

[0013] The first guide portion is configured to move away from the movable tube under the action of the second guide portion, so as to cause the locking member to retract from the movable tube.

[0014] In one possible implementation, the suspension mechanism provided in this application embodiment has at least two unlocking parts, a buffer channel is formed between two adjacent unlocking parts, a second elastic element is provided in the buffer channel, and a connecting part is provided on the movable tube, with the connecting part corresponding to the buffer channel.

[0015] The connecting part is configured to enter the buffer channel and abut against the second elastic member when the movable tube moves toward the fixed tube.

[0016] In one possible implementation, the suspension mechanism provided in this application embodiment includes a locking member comprising a connected main body and a locking member, the main body being connected to a first elastic member, a first guide member being disposed on the main body, and the main body and the locking member being disposed correspondingly to a buffer channel.

[0017] In one possible implementation, the suspension mechanism provided in this application embodiment has a support member with an extension portion connected to a movable tube and forming a guide channel with the movable tube. The guide channel communicates with the mounting cavity to guide the unlocking member toward the locking member.

[0018] In one possible implementation, the suspension mechanism provided in this application embodiment has a mounting through hole on the locking member, and a portion of the first elastic member is located within the mounting through hole.

[0019] In one possible implementation, the suspension mechanism provided in this application embodiment has a support portion on the fixed tube and an unlocking component disposed on the support portion.

[0020] Secondly, the lifting device provided in the embodiments of this application includes a device body, a drive assembly, and any of the above-mentioned suspension mechanisms;

[0021] The drive assembly is mounted on the device body. At least a portion of the drive assembly extends into the fixed tube of the suspension mechanism and is connected to the drive rod of the suspension mechanism. The drive assembly is used to drive the drive rod of the suspension mechanism to move along the fixed tube of the suspension mechanism.

[0022] Thirdly, the vehicle provided in the embodiments of this application includes a vehicle body and the lifting device as described above, with the lifting device disposed on the vehicle body.

[0023] This invention provides a suspension mechanism, a lifting device, and a vehicle. The suspension mechanism includes a movable tube, a fixed tube, a drive rod, a limiting member, a locking assembly, and an unlocking member. When the drive rod drives the movable tube away from the fixed tube, the locking assembly on the movable tube separates from the unlocking member on the fixed tube. The unlocking member releases the restriction on the locking assembly, allowing part of the locking assembly to enter the movable tube and connect with the limiting member to lock the movable tube onto the drive rod, preventing the cab from tipping over uncontrollably. When the drive rod moves the movable tube toward the fixed tube, the unlocking member of the locking assembly retracts from the movable tube and separates from the limiting member, releasing the restriction on the drive rod. This allows the cab to move relative to the lifting device, thus preventing damage to the lifting device when the cab floats up and down. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a schematic diagram of the lifting device provided in the embodiments of this application;

[0026] Figure 2 for Figure 1 A cross-sectional view of the suspension mechanism in its first state (AA section).

[0027] Figure 3 for Figure 2 AA sectional view of the device body and drive components;

[0028] Figure 4 for Figure 1 BB cross-sectional view of the suspension mechanism in the middle;

[0029] Figure 5 for Figure 4 A magnified view of the area indicated by C in the image;

[0030] Figure 6 for Figure 1 A cross-sectional view of the second state of the suspension mechanism in the middle;

[0031] Figure 7 for Figure 1 A cross-sectional view of the suspension mechanism in its third state (AA section).

[0032] Figure 8 for Figure 1 A schematic diagram of the suspension mechanism in the diagram;

[0033] Figure 9for Figure 8 A partial structural diagram;

[0034] Figure 10 for Figure 9 An enlarged view of the area indicated by D in the image.

[0035] Explanation of reference numerals in the attached figures:

[0036] 10. Suspension mechanism;

[0037] 100. Movable tube; 110. Connecting part; 120. Lifting lug;

[0038] 200. Fixed pipe; 210. Supporting part;

[0039] 300. Drive lever;

[0040] 400. Limiting component; 410. Guide slide component;

[0041] 500, Locking assembly; 510, Support member; 511, Mounting cavity; 512, Extension; 513, Guide channel; 514, Extension through hole; 520, Locking member; 521, First guide portion; 522, Main body; 523, Locking portion; 524, Mounting through hole; 530, First elastic member;

[0042] 600. Unlocking component; 610. Second guide section; 620. Buffer channel; 630. Second elastic component;

[0043] 20. Device body;

[0044] 30. Driver components.

[0045] The accompanying drawings have illustrated 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 specific embodiments. Detailed Implementation

[0046] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0047] The terms “first,” “second,” “third,” and “fourth,” etc. (if present), in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0048] As mentioned in the background section, in related technologies, the lifting device includes a drive rod and a telescopic assembly. The drive rod is fixed to the truck body, and the two ends of the telescopic assembly are respectively connected to the cab and the drive rod. Under the action of the drive rod, the telescopic assembly performs actions such as extending and retracting to achieve the tilting and lifting of the cab.

[0049] However, when a truck travels on bumpy roads, the cab is prone to bobbing up and down. Since the lifting mechanism is connected to the cab and the chassis at both ends, it is easy for the lifting device to be damaged by stress.

[0050] For example, a shock-absorbing mechanism (such as a shock-absorbing spring structure) and a lifting mechanism are installed between the cab and the vehicle body. The shock-absorbing mechanism is used to cushion and absorb shocks from the cab, reducing the impact of road vibrations on the driver, thereby improving driving comfort and reducing driver fatigue. The lifting mechanism is used to lift and tilt the cab, typically for easier maintenance, cleaning, or to improve accessibility in special circumstances. However, when the truck travels on bumpy roads, although the shock-absorbing mechanism can effectively cushion and absorb shocks, the cab will still experience some vertical movement relative to the vehicle body, making the lifting device susceptible to stress and damage.

[0051] To address the aforementioned problems in the prior art, this utility model provides a suspension mechanism, a lifting device, and a vehicle. The suspension mechanism includes a movable tube, a fixed tube, a drive rod, a limiting member, a locking assembly, and an unlocking member. When the drive rod drives the movable tube away from the fixed tube, the locking assembly on the movable tube separates from the unlocking member on the fixed tube. The unlocking member releases the restriction on the locking assembly, allowing a portion of the locking assembly to enter the movable tube and connect with the limiting member, thus locking the movable tube onto the drive rod to prevent the cab from tipping over uncontrollably. When the drive rod moves the movable tube towards the fixed tube, the unlocking member of the locking assembly retracts from the movable tube and separates from the limiting member, releasing the restriction on the drive rod. This allows the cab to move relative to the lifting device, thereby preventing damage to the lifting device due to stress when the cab floats up and down.

[0052] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0053] Reference Figures 1 to 10 As shown, the suspension mechanism 10 provided in this application embodiment includes a movable tube 100, a fixed tube 200, a drive rod 300, a limiting member 400, a locking assembly 500, and an unlocking member 600;

[0054] The drive rod 300 is disposed inside the fixed tube 200 and is used to connect with the drive assembly 30 of the lifting device. At least part of the fixed tube 200 is slidably disposed inside the movable tube 100. The limiting member 400 is slidably disposed inside the movable tube 100 and connected to the drive rod 300. The locking assembly 500 is disposed on the movable tube 100 and the unlocking member 600 is disposed on the fixed tube 200.

[0055] The locking component 500 is configured such that when the drive rod 300 drives the movable tube 100 away from the fixed tube 200, it separates from the unlocking component 600, extends into the movable tube 100, and connects with the limiting component 400 to restrict the movement of the drive rod 300 relative to the movable tube 100; when the drive rod 300 drives the movable tube 100 toward the fixed tube 200, it exits the movable tube 100 under the action of the unlocking component 600 and separates from the limiting component 400 to release the restriction on the drive rod 300.

[0056] The suspension mechanism 10 provided in this application embodiment can be applied to a lifting device to lift and lower objects to be lifted. The following description uses a truck as an example to illustrate the suspension mechanism 10 provided in this application embodiment.

[0057] Understandably, referring to Figures 1 to 3As shown, the suspension mechanism 10 provided in this application can be applied to a lifting device. The lifting device includes a device body 20 and a drive assembly 30. The drive assembly 30 is mounted on the device body 20, which can be mounted on the truck body. The fixed tube 200 of the suspension mechanism 10 is mounted on the device body 20. The drive rod 300 of the suspension mechanism 10 is connected to the drive assembly 30, and the movable tube 100 of the suspension mechanism 10 is connected to the truck cab. The drive rod 300 is driven by the drive assembly 30 to extend and retract along the length of the fixed tube 200, thereby driving the truck cab to perform lifting, lowering, or tilting actions through the movable tube 100. A buffer and shock absorption mechanism can be provided between the truck cab and the truck body to reduce cab vibration when the truck travels on bumpy roads.

[0058] To prevent damage to the lifting device due to vibrations in the cab, this application reduces damage by incorporating a suspension mechanism 10 into the existing lifting device. (See reference...) Figure 2 and Figure 4 As shown, when the truck is in motion, the locking assembly 500 is located outside the movable tube 100, and the unlocking member 600 is connected to the locking assembly 500 to prevent the locking assembly 500 from entering the movable tube 100. The drive rod 300 is separated from the movable tube 100, thus creating a sliding displacement space between the movable tube 100 and the fixed tube 200. This allows the cab to move relative to the lifting device and the truck body, effectively suspending the cab. When the truck travels on bumpy roads, the movable tube 100 can move relative to the drive rod 300 and the fixed tube 200 as the cab moves up and down, preventing damage to the lifting device.

[0059] Reference Figure 4 , Figure 6 and Figure 7 As shown, when the cab is lifted (or tilted) using the lifting device, the drive assembly 30 of the lifting device drives the drive rod 300 to move along the length of the fixed tube 200 toward the movable tube 100 and abut against the end of the movable tube 100, so that the drive rod 300 drives the movable tube 100 to move relative to the fixed tube 200. When the movable tube 100 moves, the locking assembly 500 on the movable tube 100 gradually separates from the unlocking member 600 on the fixed tube 200 until the unlocking member 600 releases the restriction on the locking assembly 500. In this way, part of the locking assembly 500 can enter the movable tube 100 and connect with the limiting member 400 to restrict the movement of the drive rod 300 relative to the movable tube 100 (that is, to lock the movable tube 100 onto the drive rod 300), so as to lock the cab and the lifting device. Then, under the action of the drive assembly 30, the cab is lifted. In this way, the locking assembly 500 locks the movable tube 100 and the drive rod 300, thereby locking the cab and the lifting device to prevent the cab from overturning out of control.

[0060] Reference Figure 4 , Figure 6 and Figure 7 As shown, when the cab lowers and resets, the drive assembly 30 of the lifting device drives the drive rod 300 to move in the opposite direction, causing the drive rod 300 to move the movable tube 100 toward the fixed tube 200. When the locking assembly 500 on the movable tube 100 connects with the unlocking member 600 on the fixed tube 200, part of the locking assembly 500, under the action of the unlocking member 600, disengages from the movable tube 100 and separates from the limiting member 400 inside the movable tube 100, thereby releasing the restriction on the drive rod 300. After the cab lowers and resets, the end of the drive rod 300 and the end of the movable tube 100 are at a distance from each other, so that there is a sliding displacement space between the movable tube 100 and the fixed tube 200, allowing the cab to suspend vertically and move relative to the lifting device, thereby preventing damage to the lifting device due to stress.

[0061] For example, the drive component 30 of the lifting device may be a hydraulic drive component 30 or a ball screw drive component 30 or other similar drive components 30, and the embodiments of this application do not impose too many restrictions on this.

[0062] In summary, the suspension mechanism 10 provided in this application embodiment allows the locking component 500 on the movable tube 100 to separate from the unlocking component 600 on the fixed tube 200 when the drive rod 300 drives the movable tube 100 away from the fixed tube 200. The unlocking component 600 releases the restriction on the locking component 500, allowing a portion of the locking component 500 to enter the movable tube 100 and connect with the limiting component 400, thus locking the movable tube 100 onto the drive rod 300 to prevent the cab from tipping over uncontrollably. When the drive rod 300 moves the movable tube 100 toward the fixed tube 200, the unlocking component 600 of the locking component 500 exits the movable tube 100 and separates from the limiting component 400, releasing the restriction on the drive rod 300. This allows the cab to move relative to the lifting device, preventing damage to the lifting device when the cab floats up and down.

[0063] Reference Figure 4 , Figure 5 and Figure 7 As shown, in some embodiments, the limiting member 400 is located at the end of the drive rod 300, and the size of the limiting member 400 is larger than the size of the drive rod 300. When the cab is lifted, the drive rod 300 abuts against the end of the movable tube 100 through the top of the limiting member 400, and a portion of the locking assembly 500 extends into the movable tube 100 and abuts against the bottom of the limiting member 400, thereby restricting the movement of the drive rod 300 relative to the movable tube 100 (i.e., locking the movable tube 100 onto the drive rod 300).

[0064] The limiting member 400 is set at the end of the drive rod 300. When the locking component 500 is partially removed from the movable tube 100, the distance between the end of the drive rod 300 and the end of the movable tube 100 is increased, thereby allowing more sliding displacement space between the movable tube 100 and the fixed tube 200.

[0065] Reference Figures 4 to 7 As shown, in some embodiments, the locking assembly 500 includes a support member 510, a locking member 520, and a first elastic member 530. The support member 510 is disposed on the movable tube 100 and forms a mounting cavity 511 with the movable tube 100. The locking member 520 is slidably disposed within the mounting cavity 511, and the first elastic member 530 is disposed within the mounting cavity 511 and located between the locking member 520 and the support member 510.

[0066] The locking member 520 is configured to extend into the movable tube 100 and connect with the limiting member 400 under the action of the first elastic member 530; when the unlocking member 600 extends into the mounting cavity 511, it exits the movable tube 100 and separates from the limiting member 400 under the action of the unlocking member 600.

[0067] In the above embodiment, the support member 510 serves to support and install the locking member 520 and the first elastic member 530. The locking member is slidably disposed in the mounting cavity 511 of the support member 510 to extend into or out of the inner cavity of the movable tube 100, and to connect or separate from the limiting member 400, thereby restricting the movement of the drive rod 300 relative to the movable tube 100 or releasing the restriction on the drive rod 300.

[0068] Specifically, refer to Figure 2 , Figure 4 and Figure 5 As shown, when the truck is in normal operation, the unlocking member 600 extends into the mounting cavity 511 and restricts the sliding of the locking member 520. At this time, the first elastic member 530 is in an energy storage state (e.g., a compressed state or an extended state). This allows for a sliding displacement space between the movable tube 100 and the fixed tube 200, thereby enabling the cab to levitate vertically.

[0069] Reference Figure 6 and Figure 7 As shown, when the cab is lifted, the movable tube 100 moves away from the fixed tube 200 under the action of the drive rod 300 and the limiting member 400. At the same time, the locking member 520 gradually separates from the unlocking member 600 until the locking member 520 and the unlocking member 600 are no longer in contact. In this way, the locking member 520 slides under the action of the first elastic member 530 and extends into the movable tube 100 to abut against the limiting member 400, thereby restricting the movement of the limiting member 400 and the drive rod 300 relative to the movable tube 100. At this time, the first elastic member 530 is in its natural state.

[0070] Reference Figure 4 , Figure 6 and Figure 7 As shown, when the cab descends and resets, the movable tube 100 moves towards the fixed tube 200 under the action of the drive rod 300 and the limiting member 400. Simultaneously, the unlocking member 600 extends into the mounting cavity 511 and applies force to the locking member 520. Under the action of the fixed tube 200, the locking member 520 separates from the limiting member 400 and exits the movable tube 100, thereby releasing the restriction on the limiting member 400 and the drive rod 300. At this time, the first elastic member 530 is in an energy-storing state (e.g., a compressed state or an extended state). This allows the cab to be in a suspended state, enabling it to float up and down.

[0071] For example, the first elastic element 530 can be a spring.

[0072] Reference Figure 5 , Figure 9 and Figure 10 As shown, in some embodiments, the locking member 520 is provided with a first guide portion 521, and the unlocking member 600 is provided with a second guide portion 610, with the first guide portion 521 and the second guide portion 610 being provided correspondingly.

[0073] The first guide portion 521 is configured to move away from the movable tube 100 under the action of the second guide portion 610, so that the locking member 520 is disengaged from the movable tube 100.

[0074] In the above embodiment, the first guide portion 521 and the second guide portion 610 slide against each other. When the locking component 500 moves toward the unlocking member 600, the unlocking member 600 extends into the mounting cavity 511 of the support member 510 and slides against the first guide portion 521 to guide the first guide portion 521 to move away from the movable tube 100, thereby driving the locking member 520 to exit the movable tube 100.

[0075] The first guide portion 521 can be a guide slope or a guide arc surface, and the second guide portion 610 can also be a guide slope or a guide arc surface. For example, see... Figure 5 As shown, the first guide part 521 is a guide arc surface, and the second guide part 610 is a guide slope surface.

[0076] To facilitate understanding of directions, an XY plane coordinate system is established in the accompanying drawings of the instruction manual, where the direction of the X-axis is the first direction and the direction of the Y-axis is the second direction.

[0077] The second guide portion 610 on the unlocking member 600 can extend into the mounting cavity 511 of the support member 510 in the first direction. After the second guide portion 610 abuts against the first guide portion 521, it guides the first guide portion 521 and the locking member 520 to exit the movable tube 100 in the second direction.

[0078] Preferably, the first direction is perpendicular to the second direction.

[0079] Reference Figures 8 to 10 As shown, in some embodiments, the number of unlocking members 600 is at least two, a buffer channel 620 is formed between two adjacent unlocking members 600, a second elastic member 630 is provided in the buffer channel 620, and a connecting part 110 is provided on the movable tube 100, with the connecting part 110 corresponding to the buffer channel 620.

[0080] The connecting part 110 is configured to enter the buffer channel 620 and abut against the second elastic member 630 when the movable tube 100 moves toward the fixed tube 200.

[0081] The buffer channel 620 extends in the first direction, and the connecting part 110 and the locking member 520 are arranged sequentially along the extension direction of the buffer channel 620, with the connecting part 110 located close to the fixing tube 200.

[0082] In the above embodiment, by providing multiple unlocking components 600 to work together on the locking component 520, the overall stability of the movement is improved. A buffer channel 620 is formed between two adjacent unlocking components 600. A second elastic component 630 is provided within the buffer channel 620. The connecting portion 110 on the movable tube 100 can enter the buffer channel 620 and abut against the second elastic component 630. The second elastic component 630 provides elastic buffering to prevent excessive suspension of the cab, which could cause the end of the inner cavity of the movable tube 100 to collide with the end of the drive rod 300 (or the end of the limiting component 400, or the end of the fixed tube 200), resulting in damage.

[0083] Specifically, refer to Figure 9 and Figure 10 As shown, when the truck is in motion, the unlocking member 600 limits the locking member 520 within the mounting cavity 511, the drive rod 300 is located within the fixed tube 200, the limiting member 400 is located at the end of the fixed tube 200, and there is a sliding displacement space between the movable tube 100 and the fixed tube 200, allowing the cab to levitate vertically. During the vertical levitation of the cab, the connecting part 110 provided on the movable tube 100 is located within the buffer channel 620 and abuts against the second elastic member 630 within the buffer channel 620, thereby preventing the cab from levitating too much.

[0084] For example, the second elastic element 630 can be a spring.

[0085] The number of unlocking components 600 is at least two, and can be two, three, four, five or more, etc.; the active tube 100 is provided with at least one connecting part 110, as long as the connecting part 110 corresponds one-to-one with the buffer channel 620. This application embodiment does not impose too many restrictions on this.

[0086] Reference Figure 9 and Figure 10 As shown, in some embodiments, the locking member 520 includes a main body portion 522 and a locking portion 523 connected to each other. The main body portion 522 is connected to the first elastic member 530, and the first guide portion 521 is disposed on the main body portion 522. The main body portion 522 and the locking portion 523 are correspondingly disposed with the buffer channel 620.

[0087] In the above embodiment, the main body 522 can slide within the mounting cavity 511 toward the fixed tube 200 (i.e., along the second direction) under the action of the first elastic member 530, so that the locking part 523 extends into the movable tube 100 and connects with the limiting member 400. The main body 522 can also slide within the mounting cavity 511 in a direction away from the fixed tube 200 under the action of the first guide part 521 and the second guide part 610, so that the locking part 523 separates from the limiting member 400 and exits the movable tube 100.

[0088] The main body 522 and the locking part 523 are correspondingly arranged with the buffer channel 620. When the cab is suspended up and down, the main body 522 and the locking part 523 can extend into the buffer channel 620 to facilitate the connection part 110 and the second elastic member 630 to abut and reduce interference, jamming and other phenomena.

[0089] Reference Figure 7 and Figure 10 As shown, the movable tube 100 is provided with an inlet hole that communicates with the mounting cavity 511. The locking part 523 matches the inlet hole, and the size of the main body 522 is larger than the size of the inlet hole. This allows the locking part 523 to enter the movable tube 100 through the inlet hole, while preventing the main body 522 from entering the movable tube 100 and causing the first guide part 521 and the second guide part 610 on the main body 522 to not be able to match.

[0090] Reference Figure 8 As shown, in some embodiments, the support member 510 has an extension 512 that is connected to the movable tube 100 and forms a guide channel 513 with the movable tube 100. The guide channel 513 communicates with the mounting cavity 511 to guide the unlocking member 600 toward the locking member 520.

[0091] In the above embodiment, the guide channel 513 can guide the unlocking member 600 into the mounting cavity 511 so that the unlocking member 600 and the locking member 520 abut against each other, so that the locking member 520 can be withdrawn from the active tube 100 under the action of the unlocking member 600.

[0092] Specifically, refer to Figure 8 As shown, the support member 510 is provided with at least two extending through holes 514, which communicate with the mounting cavity 511 and correspond to the unlocking member 600. The second guide portion 610 on the unlocking member 600 can enter the mounting cavity 511 from the guide channel 513 along the first direction and exit the mounting cavity 511 through the extending through holes 514. In this way, the unlocking member 600 can be avoided by the extending through holes 514, thus preventing the unlocking member 600 from directly colliding with the end of the support member 510 and causing damage.

[0093] The support member 510 and the extension 512 can both be connected to the movable tube 100 by welding.

[0094] Reference Figure 9 and Figure 10 As shown, in some embodiments, the locking member 520 is provided with a mounting through hole 524, and a portion of the first elastic member 530 is located within the mounting through hole 524.

[0095] The extension direction of the mounting through hole 524 is the second direction.

[0096] In the above embodiment, the mounting through hole 524 can provide motion guidance for the first elastic member 530 in the second direction, so as to ensure that the first elastic member 530 only bears axial force (i.e. force in the second direction), so that the first elastic member 530 deforms (compresses or stretches) in the second direction, and avoids fatigue failure of the first elastic member 530 due to bending or twisting.

[0097] Specifically, refer to Figure 10 As shown, the mounting through hole 524 is provided on the side of the main body 522 away from the movable tube 100.

[0098] Reference Figures 8 to 10 As shown, in some embodiments, a support portion 210 is provided on the fixing tube 200, and an unlocking member 600 is provided on the support portion 210.

[0099] In the above embodiment, the support 210 is used to provide support and installation position for the unlocking member 600 so that the unlocking member 600 can be aligned with the guide channel 513 and the mounting cavity 511 on the support 510.

[0100] The support part 210 can be a ring-shaped part, which is sleeved on the outside of the fixed tube 200. The support part 210 can be connected to the fixed tube 200 by welding.

[0101] Specifically, refer to Figure 9 and Figure 10 As shown, the locking part 523, the connecting part 110, and the supporting part 210 are arranged sequentially along the first direction. In this way, the connecting part 110 abuts against the second elastic member 630 in the buffer channel 620, and the second elastic member 630 can play an elastic buffering role to avoid collision between the movable tube 100 and the supporting member 510 and the supporting part 210, which would cause damage.

[0102] Reference Figure 1 and Figure 2 As shown, the movable tube 100 is provided with a lifting lug 120, which is used to connect to the cab.

[0103] Reference Figure 5 As shown, in some embodiments, a guide slide 410 is provided on the limiting member 400. The guide slide 410 is located between the limiting member 400 and the movable tube 100 and is slidably connected to the movable tube 100.

[0104] In the above embodiment, the limiting member 400 is connected to the movable tube 100 through the guide slide member 410. In this way, the guide slide member 410 supports the displacement of the limiting member 400 and ensures the stable operation of the limiting member 400.

[0105] For example, the guide slide 410 is an annular part sleeved on the limiting member 400. The outer surface of the guide slide 410 forms a slidable contact with the inner wall of the movable tube 100. When the limiting member 400 is in a lifting displacement, the guide slide 410 slides relative to the movable tube 100 with the lifting action of the limiting member 400. The guide slide 410 plays the role of supporting the displacement of the limiting member 400 and ensuring the stable action of the limiting member 400.

[0106] For example, the guide slide 410 can be made of wear-resistant, high-strength metal or ceramic materials. Since the limiting part 400 itself has a high displacement frequency and wears a lot, by setting the guide slide 410, the sliding performance and stability of the limiting part 400 in the movable tube 100 can be enhanced. On the other hand, under the long-term displacement wear of the limiting part 400, the normal operation of the limiting part 400 can also be maintained by replacing the guide slide 410. This setting also helps to reduce maintenance costs.

[0107] Reference Figure 1 and Figure 3As shown, the lifting device provided in this application embodiment includes a device body 20, a drive assembly 30, and a suspension mechanism 10 as described above. The drive assembly 30 is disposed on the device body 20, and at least a portion of the drive assembly 30 extends into the fixed tube 200 of the suspension mechanism 10 and is connected to the drive rod 300 of the suspension mechanism 10. The drive assembly 30 is used to drive the drive rod 300 of the suspension mechanism 10 to move along the fixed tube 200 of the suspension mechanism 10.

[0108] In this embodiment, since the lifting device adopts the suspension mechanism 10 in the above embodiment, it also has the advantages and benefits brought by the suspension mechanism 10, which will not be elaborated here.

[0109] The fixed tube 200 is disposed on the device body 20, and part of the drive component 30 is located inside the fixed tube 200 and connected to the drive rod 300 inside the fixed tube 200.

[0110] The vehicle provided in this application embodiment includes a vehicle body and the lifting device as described above, with the lifting device disposed on the vehicle body.

[0111] The vehicle body includes a cab and a body, a lifting device is located between the cab and the body, the movable pipe 100 of the lifting device is connected to the cab, and the device body 20 of the lifting device is connected to the body.

[0112] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0113] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A levitation mechanism characterized by, It includes a movable tube (100), a fixed tube (200), a drive rod (300), a limiting member (400), a locking assembly (500), and an unlocking member (600); The drive rod (300) is disposed inside the fixed tube (200) and is used to connect with the drive assembly (30) of the lifting device. At least a portion of the fixed tube (200) is slidably disposed inside the movable tube (100). The limiting member (400) is slidably disposed inside the movable tube (100) and connected to the drive rod (300). The locking assembly (500) is disposed on the movable tube (100), and the unlocking member (600) is disposed on the fixed tube (200). Part of the locking assembly (500) is configured such that, when the drive rod (300) drives the movable tube (100) away from the fixed tube (200), it separates from the unlocking member (600), extends into the movable tube (100), and connects with the limiting member (400) to restrict the movement of the drive rod (300) relative to the movable tube (100); when the drive rod (300) drives the movable tube (100) toward the fixed tube (200), it exits the movable tube (100) under the action of the unlocking member (600) and separates from the limiting member (400) to release the restriction on the drive rod (300).

2. The levitation mechanism of claim 1, wherein, The locking assembly (500) includes a support (510), a locking member (520), and a first elastic member (530). The support member (510) is disposed on the movable tube (100) and forms an installation cavity (511) with the movable tube (100). The locking member (520) is slidably disposed in the installation cavity (511). The first elastic member (530) is disposed in the installation cavity (511) and located between the locking member (520) and the support member (510). The locking member (520) is configured to extend into the movable tube (100) and connect with the limiting member (400) under the action of the first elastic member (530); when the unlocking member (600) extends into the mounting cavity (511), it exits the movable tube (100) and separates from the limiting member (400) under the action of the unlocking member (600).

3. The levitation mechanism of claim 2, wherein, The locking member (520) is provided with a first guide portion (521), and the unlocking member (600) is provided with a second guide portion (610), with the first guide portion (521) and the second guide portion (610) being provided correspondingly; The first guide portion (521) is configured to move away from the movable tube (100) under the action of the second guide portion (610) so that the locking member (520) is disengaged from the movable tube (100).

4. The levitation mechanism of claim 3, wherein, The number of unlocking components (600) is at least two, and a buffer channel (620) is formed between two adjacent unlocking components (600). A second elastic component (630) is provided in the buffer channel (620), and a connecting part (110) is provided on the movable tube (100). The connecting part (110) is correspondingly provided with the buffer channel (620). The connecting part (110) is configured to enter the buffer channel (620) and abut against the second elastic member (630) when the movable tube (100) moves toward the fixed tube (200).

5. The levitation mechanism of claim 4, wherein, The locking member (520) includes a main body (522) and a locking part (523) connected to each other. The main body (522) is connected to the first elastic member (530). The first guide part (521) is disposed on the main body (522). The main body (522) and the locking part (523) are correspondingly disposed with the buffer channel (620).

6. A levitation mechanism according to any one of claims 3 to 5, wherein, The support member (510) has an extension (512) that is connected to the movable tube (100) and forms a guide channel (513) with the movable tube (100). The guide channel (513) communicates with the mounting cavity (511) to guide the unlocking member (600) toward the locking member (520).

7. A levitation mechanism according to any one of claims 2 to 5, wherein, The locking member (520) is provided with a mounting through hole (524), and part of the first elastic member (530) is located in the mounting through hole (524).

8. The levitation mechanism according to any one of claims 1 to 5, wherein The fixed tube (200) is provided with a support part (210), and the unlocking part (600) is provided on the support part (210).

9. A lifting device, characterized in that It includes a device body (20), a drive assembly (30), and a suspension mechanism (10) as described in any one of claims 1 to 8. The drive assembly (30) is disposed on the device body (20), and at least part of the drive assembly (30) extends into the fixed tube (200) of the suspension mechanism (10) and is connected to the drive rod (300) of the suspension mechanism (10). The drive assembly (30) is used to drive the drive rod (300) of the suspension mechanism (10) to move along the fixed tube (200) of the suspension mechanism (10).

10. A vehicle characterized by comprising: It includes a vehicle body and a lifting device as described in claim 9, wherein the lifting device is disposed on the vehicle body.

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