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 moving rod, a main body pipe, a movable pipe, a limiting piece and a locking assembly. The moving rod is arranged in the main body pipe, at least part of the main body pipe is slidably arranged in the movable pipe, and the limiting piece is slidably arranged in the movable pipe and connected with the moving rod. The locking assembly is arranged on the movable pipe and corresponds to the main body pipe. The limiting piece is arranged on the moving rod, the locking assembly on the movable pipe can stretch into the movable pipe to be matched with the limiting piece to lock the movable pipe on the moving rod, so that the cab and the lifting device are locked, and the cab can be prevented from being out of control and turning backwards during lifting; when the moving rod drives the movable pipe to move towards the main body pipe, the locking assembly retreats from the movable pipe under the action of the main body pipe to relieve limitation on the limiting piece, so that 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 includes a cab and a body connected to the cab. A lifting mechanism 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 base, a drive unit, and a telescopic assembly. The base is fixed to the truck body, the drive unit is mounted on the base, and the telescopic assembly is connected to the cab and the drive unit respectively. The drive unit drives the telescopic assembly to extend and retract to achieve actions such as flipping and lifting the cab.

[0004] However, when the truck travels on bumpy roads, the cab is prone to up-and-down movement. Since the lifting mechanism is connected to the cab and the chassis at both ends, the lifting device is easily 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 moving rod, a main tube, a movable tube, a limiting member, and a locking assembly;

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

[0008] The locking assembly is mounted on the movable tube and corresponds to the main tube. Some locking assemblies are configured such that when the moving rod drives the limiting member to abut against the end of the movable tube and moves the movable tube away from the main tube, the locking assembly extends into the movable tube and abuts against the limiting member to restrict the movement of the limiting member relative to the movable tube; when the moving rod moves the movable tube closer to the main tube, the locking assembly retracts from the movable tube under the action of the main tube to release the restriction on the limiting member.

[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 an elastic member;

[0010] The support is mounted on the movable tube and has a mounting cavity that communicates with the inner cavity of the movable tube. The locking element is slidably mounted in the mounting cavity, and the elastic element is mounted in the mounting cavity and connected to the locking element.

[0011] The locking element is configured to extend into the movable tube under the action of the elastic element and abut against the limiting element to restrict the movement of the limiting element relative to the movable tube; under the action of the main tube, it retracts from the movable tube and puts the elastic element into an energy storage state to release the restriction on the limiting element.

[0012] In one possible implementation, the suspension mechanism provided in this application embodiment includes a locking part comprising a movable part, a connecting part, and a locking part. The movable part and the locking part are both slidably disposed in the mounting cavity. The movable part is correspondingly disposed with the main tube. The connecting part connects the movable part and the locking part. The elastic element is connected to the connecting part.

[0013] The locking part is configured to extend into or out of the movable tube under the action of the movable part, so as to restrict the movement of the limiting member or release the restriction on the limiting member.

[0014] In one possible implementation, the suspension mechanism provided in this application embodiment has a guide portion at one end of the movable part near the main tube. The guide portion is configured to abut against the main tube to drive the movable part out of the movable tube.

[0015] In one possible implementation, the suspension mechanism provided in this application embodiment includes a first connecting part and a second connecting part. The first connecting part is rotatably connected to the movable part, and the second connecting part is rotatably connected to the locking part. The first connecting part and the second connecting part are rotatably connected, and an elastic element is disposed between the first connecting part and the second connecting part.

[0016] In one possible implementation, the suspension mechanism provided in this application embodiment further includes a first mounting member and a second mounting member in the locking assembly. Both the first mounting member and the second mounting member are disposed within the mounting cavity. The first connecting portion is rotatably disposed on the first mounting member, and the second connecting portion is rotatably disposed on the second mounting member.

[0017] In one possible implementation, the suspension mechanism provided in this application embodiment includes a first mounting cavity, a second mounting cavity, and a third mounting cavity that are connected in sequence. The first mounting cavity, the second mounting cavity, and the third mounting cavity are spaced apart along the length direction of the movable tube, and the first mounting cavity is located close to the main tube.

[0018] The first mounting cavity and the third mounting cavity are connected to the inner cavity of the movable tube. The movable part and the elastic element are both located in the first mounting cavity, the connecting part is located in the second mounting cavity, and the locking part is located in the third mounting cavity.

[0019] In one possible implementation, the suspension mechanism provided in this application embodiment has a guide slide on the limiting member, the guide slide is located between the limiting member and the movable tube, and is slidably connected to the movable tube.

[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 disposed on the device body, and at least part of the drive assembly extends into the main tube of the suspension mechanism and is connected to the motion rod of the suspension mechanism. The drive assembly is used to drive the motion rod of the suspension mechanism to move along the main 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] The suspension mechanism provided in this application embodiment, by setting a limiting member on the moving rod, allows the locking component on the movable tube to extend into the movable tube and cooperate with the limiting member to lock the movable tube onto the moving rod, thereby locking the cab and the lifting device together and preventing the cab from tipping over uncontrollably during lifting. When the moving rod drives the movable tube toward the main tube, the locking component retracts from the movable tube under the action of the main tube to release the restriction on the limiting member, allowing the cab to move relative to the lifting device, thereby preventing the lifting device from being damaged by force 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 lifting device in the middle;

[0027] Figure 3 for Figure 2 A first schematic diagram of the locking component of the suspension mechanism in the unlocked state;

[0028] Figure 4 for Figure 3 Enlarged view of the first part of the suspension mechanism in the image;

[0029] Figure 5 for Figure 3 Enlarged view of the second part of the suspension mechanism in the image;

[0030] Figure 6 for Figure 2 A second schematic diagram of the locking component of the suspension mechanism in the unlocked state;

[0031] Figure 7 for Figure 2A schematic diagram of the locking assembly of the suspension mechanism in the locked state.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10. Suspension mechanism;

[0034] 100. Sports pole;

[0035] 200. Main pipe;

[0036] 300, movable tube; 310, first through hole; 320, second through hole; 330, lifting lug;

[0037] 400. Limiting component; 410. Guide slide component;

[0038] 500. Locking assembly; 510. Support member; 511. Mounting cavity; 5111. First mounting cavity; 5112. Second mounting cavity; 5113. Third mounting cavity; 520. Locking member; 521. Movable part; 522. Connecting part; 5221. First connecting part; 5222. Second connecting part; 523. Locking part; 524. Guide part; 540. First mounting member; 550. Second mounting member;

[0039] 20. Device body;

[0040] 30. Driver components.

[0041] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] As mentioned in the background section, in related technologies, the lifting device includes a base, a drive unit, and a telescopic assembly. The base is fixed to the truck frame, the drive unit is mounted on the base, and the telescopic assembly is connected to the cab and the drive unit respectively. The drive unit drives the telescopic assembly to extend and retract to achieve actions such as flipping and lifting the cab.

[0045] However, when the truck travels on bumpy roads, the cab is prone to up-and-down movement. Since the lifting mechanism is connected to the cab and the chassis at both ends, the lifting device is easily damaged by stress.

[0046] 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.

[0047] 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 main tube, a moving rod, a movable tube, a limiting member, and a locking assembly. The moving rod is disposed within the main tube and is used to connect to the drive assembly of the lifting device. At least a portion of the main tube is slidably disposed within the movable tube, and the limiting member is slidably disposed within the movable tube and connected to the moving rod. The locking assembly is disposed on the movable tube and corresponds to the main tube. This application, by providing a limiting member on the moving rod, allows the locking assembly on the movable tube to extend into the movable tube and cooperate with the limiting member to lock the movable tube onto the moving rod, thereby locking the cab to the lifting device and preventing the cab from tipping over during lifting. When the moving rod drives the movable tube towards the main tube, the locking assembly, under the action of the main tube, exits the movable tube, releasing the limiting member and allowing the cab to move relative to the lifting device, thus preventing damage to the lifting device due to the cab's vertical movement.

[0048] 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 now be described with reference to the accompanying drawings.

[0049] Reference Figures 2 to 7 As shown, the suspension mechanism 10 provided in this application embodiment includes a moving rod 100, a main tube 200, a movable tube 300, a limiting member 400, and a locking assembly 500.

[0050] The moving rod 100 is disposed inside the main tube 200 and is used to connect with the drive assembly 30 of the lifting device. At least a portion of the main tube 200 is slidably disposed inside the movable tube 300, and the limiting member 400 is slidably disposed inside the movable tube 300 and connected to the moving rod 100.

[0051] The locking assembly 500 is disposed on the movable tube 300 and is disposed corresponding to the main tube 200. Part of the locking assembly 500 is configured such that when the moving rod 100 drives the limiting member 400 to abut against the end of the movable tube 300 and moves the movable tube 300 away from the main tube 200, the locking assembly 500 extends into the movable tube 300 and abuts against the limiting member 400 to restrict the movement of the limiting member 400 relative to the movable tube 300; when the moving rod 100 moves the movable tube 300 closer to the main tube 200, the locking assembly 500 exits the movable tube 300 under the action of the main tube 200 to release the restriction on the limiting member 400.

[0052] 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.

[0053] It is understood that the suspension mechanism 10 provided in this application can be applied to a lifting device, which 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 drive assembly 30 is connected to the moving rod 100 of the suspension mechanism 10, and the drive assembly 30 can drive the moving rod 100 to move along the length of the main tube 200, thereby lifting or lowering the truck cab. 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.

[0054] To prevent damage to the lifting device due to vibrations in the cab, this application incorporates a suspension mechanism 10 into the existing lifting device to reduce damage. The main body tube 200 of the suspension mechanism 10 can be mounted on the device body 20 of the lifting device, while the movable tube 300 is mounted on the cab, with at least a portion of the main body tube 200 slidably disposed within the movable tube 300. (See reference...) Figures 3 to 6 As shown, when the truck is moving, the locking assembly 500 disengages from the movable tube 300, and the main tube 200 abuts against the locking assembly 500, preventing it from entering the movable tube 300. Furthermore, the limiting member 400 abuts against the main tube 200, creating a sliding displacement space between the main tube 200 and the movable tube 300, allowing the cab to move relative to the lifting device. When the truck cab moves up and down on bumpy roads, the movable tube 300 can move relative to the main tube 200 and the moving rod 100 along with the cab's movement, thus preventing damage to the lifting device.

[0055] Reference Figure 6 and Figure 7 As shown, when the cab is lifted, the drive assembly 30 of the lifting device drives the moving rod 100 to move along the length of the main tube 200 toward the movable tube 300. The limiting member 400, driven by the moving rod 100, moves toward the movable tube 300 and abuts against the end of the movable tube 300, allowing the moving rod 100 to drive the movable tube 300 to move relative to the main tube 200. This continues until the locking assembly 500 on the movable tube 300 disengages from the main tube 200. In this way, the locking assembly 500 can extend into the movable tube 300 and abut against the limiting member 400, restricting the movement of the limiting member 400 relative to the movable tube 300, thereby locking the movable tube 300 onto the moving rod 100, thus locking the cab to the lifting device. As the moving rod 100 moves, the moving tube 300 moves relative to the main tube 200 and lifts the cab. The locking assembly 500 locks the moving tube 300 to the moving rod 100 to prevent the cab from overturning out of control.

[0056] Reference Figure 3 , Figure 6 and Figure 7 As shown, when the cab is lowered and reset, the drive assembly 30 of the lifting device continues to drive the moving rod 100 to move, so that the moving rod 100 drives the movable tube 300 to move toward the main tube 200 until the locking assembly 500 extending into the movable tube 300 abuts against the main tube 200. As the moving rod 100 continues to move, the locking assembly 500 is disengaged from the movable tube 300 under the action of the main tube 200, so as to release the restriction on the limiting member 400. After the movable member drives the limiting member 400 to abut against the main tube 200, there is a sliding displacement space between the movable tube 300 and the main tube 200, so that the cab can be suspended up and down and move relative to the lifting device, thereby avoiding damage to the lifting device due to force.

[0057] 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.

[0058] In summary, this application provides a limiting member 400 on the moving rod 100, and a locking component 500 on the movable tube 300 can extend into the movable tube 300 and cooperate with the limiting member 400 to lock the movable tube 300 onto the moving rod 100, thereby locking the cab and the lifting device together and preventing the cab from tipping over uncontrollably during lifting. When the moving rod 100 drives the movable tube 300 toward the main tube 200, the locking component 500 is released from the movable tube 300 under the action of the main tube 200, thereby releasing the restriction on the limiting member 400, allowing the cab to move relative to the lifting device, thus preventing damage to the lifting device due to force when the cab floats up and down.

[0059] Reference Figure 3 and Figure 4 As shown, in some embodiments, the locking assembly 500 includes a support member 510, a locking member 520, and an elastic member (not shown in the figure). The support member 510 is disposed on the movable tube 300 and has a mounting cavity 511 that communicates with the inner cavity of the movable tube 300. The locking member 520 is slidably disposed within the mounting cavity 511, and the elastic member is disposed within the mounting cavity 511 and connected to the locking member 520.

[0060] The locking member 520 is configured to extend into the movable tube 300 under the action of the elastic member and abut against the limiting member 400 to restrict the movement of the limiting member 400 relative to the movable tube 300; under the action of the main tube 200, it withdraws from the movable tube 300 and puts the elastic member into an energy storage state to release the restriction on the limiting member 400.

[0061] In the above embodiment, the support member 510 serves to support and install the locking member 520 and the elastic member. The locking member 520 is slidably disposed within the mounting cavity 511 of the support member 510 to extend into or retract from the inner cavity of the movable tube 300, thereby restricting the movement of the limiting member 400 relative to the movable tube 300 or releasing the restriction on the limiting member 400.

[0062] Specifically, refer to Figure 6 and Figure 7 As shown, when the cab is being lifted, the movable tube 300 moves away from the main tube 200 under the action of the moving rod 100 and the limiting member 400 until the locking member 520 disengages from the main tube 200. Then, under the action of the elastic member, the locking member 520 extends into the movable tube 300 and abuts against the limiting member 400, thereby restricting the movement of the limiting member 400 and the moving rod 100 relative to the movable tube 300. At this time, the elastic member is in its natural state.

[0063] Reference Figure 6 and Figure 7 As shown, when the cab is lowered and reset, the movable tube 300 moves toward the main tube 200 under the action of the moving rod 100 and the limiting member 400 until the locking member 520 extending into the movable tube 300 abuts against the main tube 200. As the moving rod 100 continues to move, the locking member 520 is pulled out of the movable tube 300 under the action of the main tube 200, thereby releasing the restriction on the limiting member 400. At this time, the elastic member is in an energy storage state (e.g., a compressed state or an extended state) and presses the locking member 520 against the main tube 200.

[0064] For example, the elastic element can be a spring, torsion spring, etc.

[0065] Reference Figure 4 As shown, in some embodiments, the locking member 520 includes a movable part 521, a connecting part 522, and a locking part 523. The movable part 521 and the locking part 523 are both slidably disposed in the mounting cavity 511. The movable part 521 is correspondingly disposed with the main tube 200. The connecting part 522 connects the movable part 521 and the locking part 523. The elastic member is connected to the connecting part 522.

[0066] The locking part 523 is configured to extend into or out of the movable tube 300 under the action of the movable part 521, so as to restrict the movement of the limiting member 400 or release the restriction on the limiting member 400.

[0067] In the above embodiment, the movable part 521 is correspondingly provided with the main tube 200, and the elastic member is connected to the connecting part 522. Thus, when the movable part 521 is disengaged from the main tube 200, the elastic member drives the connecting part 522 to move, thereby causing the movable part 521 and the locking part 523 to extend into the movable tube 300. In this way, the locking part 523 abuts against the limiting member 400, thereby limiting the limiting member 400.

[0068] When the movable part 521 comes into contact with the main tube 200, the movable part 521 retracts from the movable tube 300 under the action of the main tube 200, and drives the locking part 523 to move through the connecting part 522, so that the locking part 523 retracts from the movable tube 300, thereby releasing the restriction on the limiting member 400. At this time, the elastic member is in an energy storage state (e.g., a compressed state or an extended state) under the action of the connecting part 522, and presses the movable part 521 against the main tube 200.

[0069] Furthermore, refer to Figure 4 As shown, the movable part 521 and the locking part 523 are spaced apart along the length of the movable tube 300. The movable part 521 is located close to the main tube 200. In this way, the locking part 523 can only extend into or retract from the movable tube 300 under the action of the movable part 521. This prevents the locking part 523 from retracting from the movable tube 300 by the force of the limiting member 400, which would cause the movable tube 300 on the cab to be unlocked from the moving rod 100, resulting in the cab losing control and overturning.

[0070] Reference Figure 4 As shown, in some embodiments, a guide portion 524 is provided at one end of the movable part 521 near the main body tube 200. The guide portion 524 is configured to abut against the main body tube 200 to drive the movable part 521 out of the movable tube 300.

[0071] In the above embodiment, the movable part 521 is provided with a guide part 524, which has a guide surface. When the cab is lowered and reset, the moving rod 100 drives the movable tube 300 to move toward the main tube 200 in a first direction. After the guide part 524 abuts against the main tube 200, the main tube 200 slides against the guide surface of the guide part 524, thereby driving the movable part 521 to exit the movable tube 300 in a second direction.

[0072] The first direction is perpendicular to the second direction, and the first direction can be the length direction of the movable tube 300 (or the moving rod 100).

[0073] In this way, the main tube 200 can guide the movable part 521 out of the movable tube 300 through the guide part 524, so that the movement process is smoother and jamming is avoided.

[0074] For example, the guide portion 524 can be a wedge-shaped member, and the guide surface of the guide portion 524 can be a guide slope. The guide portion 524 can also be an arc-shaped member, and the guide surface of the guide portion 524 can be a guide arc surface. The embodiments of this application do not impose too many limitations on this.

[0075] Reference Figure 4 As shown, in some embodiments, the guide portion 524 is a guide wheel.

[0076] In the above embodiment, the guide portion 524 is a guide wheel, which is rotatably mounted on the movable portion 521. Each guide wheel has a guide arc surface. Thus, when the moving rod 100 drives the movable tube 300 to move toward the main tube 200 in a first direction, the guide wheel abuts against the main tube 200, and the main tube 200 drives the movable portion 521 to move in a second direction along the guide arc surface of the guide wheel, causing the movable portion 521 and the guide wheel to exit the movable tube 300.

[0077] Reference Figure 4 As shown, in some embodiments, the connecting portion 522 includes a first connecting portion 5221 and a second connecting portion 5222. The first connecting portion 5221 is rotatably connected to the movable portion 521, and the second connecting portion 5222 is rotatably connected to the locking portion 523. The first connecting portion 5221 and the second connecting portion 5222 are rotatably connected, and an elastic element is disposed between the first connecting portion 5221 and the second connecting portion 5222.

[0078] The elastic element can be a torsion spring, which connects the first connecting part 5221 and the second connecting part 5222.

[0079] In the above embodiment, both the movable part 521 and the locking part 523 are slidably disposed in the mounting cavity 511. When the main tube 200 is separated from the movable part 521, the main tube 200 releases the restriction on the movable part 521. In this way, the first connecting part 5221 and the second connecting part 5222 can rotate relative to each other under the action of the elastic member, so as to drive the movable part 521 and the locking part 523 to slide in the mounting cavity 511, so that the movable part 521 and the locking part 523 respectively extend into the movable tube 300.

[0080] In this way, the first connecting part 5221 and the second connecting part 5222 drive the moving part 521 and the locking part 523 to move, so that the overall movement process is more flexible and jamming is avoided.

[0081] Specifically, refer to Figure 4As shown, the first connecting part 5221 and the second connecting part 5222 are hinged together. The end of the first connecting part 5221 away from the second connecting part 5222 has a first oblong hole. A first connecting member is provided on the movable part 521, which is rotatably disposed within the first oblong hole and can slide along the length of the first oblong hole. This improves the flexibility of movement between the movable part 521 and the first connecting part 5221, preventing jamming. Similarly, the second connecting part 5222 has a second oblong hole, and the locking part 523 has a second connecting member; further details are omitted here.

[0082] Reference Figure 4 and Figure 5 As shown, in some embodiments, the locking assembly 500 further includes a first mounting member 540 and a second mounting member 550, both of which are disposed within the mounting cavity 511. A first connecting portion 5221 is rotatably disposed on the first mounting member 540, and a second connecting portion 5222 is rotatably disposed on the second mounting member 550.

[0083] In the above embodiment, the first mounting member 540 is used to mount the first connecting part 5221 and plays the role of supporting the first connecting part 5221, and the second mounting member 550 is used to mount the second connecting part 5222 and plays the role of supporting the second connecting part 5222, so as to improve the movement stability of the first connecting part 5221 and the second connecting part 5222.

[0084] In this way, under the action of the elastic element, the first connecting part 5221 rotates relative to the first mounting part 540 to drive the movable part 521 to slide, and the second connecting part 5222 rotates relative to the second mounting part 550 to drive the locking part 523 to slide, making the overall movement more stable.

[0085] When the movable part 521 is withdrawn from the movable tube 300 under the action of the main tube 200, the movable part 521 slides in the mounting cavity 511 and drives the first connecting part 5221 to rotate. The first connecting part 5221 drives the second connecting part 5222 to rotate and compress or stretch the elastic element. The second connecting part 5222 drives the locking part 523 to move so that the locking part 523 withdraws from the movable tube 300.

[0086] In this way, the first mounting member 540 supports the first connecting part 5221, and the second mounting member 550 supports the second connecting part 5222, so as to ensure the stability of the overall movement.

[0087] Furthermore, refer to Figure 4As shown, the first mounting member 540 is rotatably connected to the middle area of ​​the first connecting portion 5221, and the movable portion 521 and the second connecting portion 5222 are rotatably connected to both ends of the first connecting portion 5221, respectively. The second mounting member 550 is rotatably connected to the middle area of ​​the second connecting portion 5222, and the locking portion 523 and the first connecting portion 5221 are rotatably connected to both ends of the second connecting portion 5222, thereby improving the stability of the overall structure's movement.

[0088] Reference Figure 4 and Figure 5 As shown, in some embodiments, the mounting cavity 511 includes a first mounting cavity 5111, a second mounting cavity 5112 and a third mounting cavity 5113 connected in sequence. The first mounting cavity 5111, the second mounting cavity 5112 and the third mounting cavity 5113 are spaced apart along the length of the movable tube 300, and the first mounting cavity 5111 is located close to the main tube 200.

[0089] The first mounting cavity 5111 and the third mounting cavity 5113 are connected to the inner cavity of the movable tube 300. The movable part 521 is disposed in the first mounting cavity 5111, the connecting part 522 and the elastic element are disposed in the second mounting cavity 5112, and the locking part 523 is disposed in the third mounting cavity 5113.

[0090] In the above embodiments, by respectively arranging the movable part 521, the connecting part 522 and the locking part 523 in the first mounting cavity 5111, the second mounting cavity 5112 and the third mounting cavity 5113, mutual interference during movement is avoided, thereby improving stability.

[0091] Furthermore, refer to Figure 4 and Figure 5 As shown, the movable part 521 is slidably disposed within the first mounting cavity 5111. A first through hole 310 is provided on the movable tube 300, corresponding to and communicating with the first mounting cavity 5111, allowing the movable part 521 to enter or exit the movable tube 300 through the first through hole 310. The locking part 523 is slidably disposed within the third mounting cavity 5113. A second through hole 320 is provided on the movable tube 300, corresponding to and communicating with the third mounting cavity 5113, allowing the locking part 523 to enter or exit the movable tube 300 through the second through hole 320.

[0092] Reference Figure 4 and Figure 5 As shown, the first mounting member 540 and the second mounting member 550 are both disposed in the second mounting cavity 5112, so that the first connecting part 5221 and the second connecting part 5222 are rotatably disposed in the second mounting cavity 5112.

[0093] Reference Figures 4 to 7As shown, when the cab is being lifted, the moving rod 100 causes the limiting member 400 to abut against the end of the movable tube 300, and causes the movable tube 300 to move away from the main tube 200 until the main tube 200 moves away from the first through hole 310. In this way, the connecting part 522 can drive the movable part 521 through the first through hole 310 into the movable tube 300 under the action of the elastic member, and drive the locking part 523 through the second through hole 320 into the movable tube 300, so that the locking part 523 can restrict the movement of the limiting member 400.

[0094] Reference Figures 4 to 7 As shown, when the cab descends and resets, the moving rod 100 drives the movable tube 300 towards the main tube 200. The main tube 200 abuts against the guide portion 524 on the movable part 521, thereby driving the movable part 521 to exit the movable tube 300 through the first through hole 310. The main tube 200 then blocks the first through hole 310 to prevent the movable part 521 from popping out under the action of the elastic member. In this way, the movable part 521 drives the locking part 523 through the connecting part 522 to enter the movable tube 300 through the second through hole 320, thereby releasing the locking part 523 from restricting the limiting member 400.

[0095] Reference Figure 3 , Figure 6 and Figure 7 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 300 and is slidably connected to the movable tube 300.

[0096] In the above embodiment, the limiting member 400 is connected to the movable tube 300 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.

[0097] 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 abutment with the inner wall of the movable tube 300. When the limiting member 400 is in a lifting displacement, the guide slide 410 slides relative to the movable tube 300 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.

[0098] 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 300 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.

[0099] It should be noted that the sliding friction between the guide slide 410 and the inner wall of the movable tube 300, and between the limiting part 400 and the inner wall of the movable tube 300, can be reduced through certain structural designs to further improve the smooth sliding effect. For example, an industrial lubricant can be applied to the inner wall of the movable tube 300, or the surface smoothness of the guide slide 410 can be improved by polishing, coating, or using low-friction materials. This application embodiment does not make absolute limitations in this regard.

[0100] Reference Figure 3 As shown, the movable tube 300 is equipped with a lifting lug 330, which is used to connect to the cab.

[0101] Reference Figure 1 and Figure 2 As 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 main body tube 200 of the suspension mechanism 10 and is connected to the movement rod 100 of the suspension mechanism 10. The drive assembly 30 is used to drive the movement rod 100 of the suspension mechanism 10 to move along the main body tube 200 of the suspension mechanism 10.

[0102] 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.

[0103] The main tube 200 is disposed on the device body 20, and a portion of the drive components 30 are located inside the main tube 200 and connected to the motion rod 100 inside the main tube 200.

[0104] 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.

[0105] The vehicle body includes a cab and a body, a lifting device is located between the cab and the body, the movable pipe 300 of the lifting device is connected to the cab, and the device body 20 of the lifting device is connected to the body.

[0106] 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.

[0107] 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 suspension mechanism, characterized in that, It includes a moving rod (100), a main tube (200), a movable tube (300), a limiting member (400), and a locking assembly (500); The moving rod (100) is disposed inside the main body tube (200), and the moving rod (100) is used to connect with the drive assembly (30) of the lifting device. At least a portion of the main body tube (200) is slidably disposed inside the movable tube (300), and the limiting member (400) is slidably disposed inside the movable tube (300) and connected to the moving rod (100). The locking assembly (500) is disposed on the movable tube (300) and corresponding to the main tube (200). Part of the locking assembly (500) is configured such that when the moving rod (100) drives the limiting member (400) to abut against the end of the movable tube (300) and moves the movable tube (300) away from the main tube (200), the locking assembly (500) extends into the movable tube (300) and abuts against the limiting member (400) to restrict the movement of the limiting member (400) relative to the movable tube (300); when the moving rod (100) moves the movable tube (300) closer to the main tube (200), the locking assembly (500) exits the movable tube (300) under the action of the main tube (200) to release the restriction on the limiting member (400).

2. The levitation mechanism of claim 1, wherein, The locking assembly (500) includes a support member (510), a locking member (520), and an elastic member; The support member (510) is disposed on the movable tube (300), the support member (510) has a mounting cavity (511), the mounting cavity (511) communicates with the inner cavity of the movable tube (300), the locking member (520) is slidably disposed in the mounting cavity (511), the elastic member is disposed in the mounting cavity (511), and the elastic member is connected to the locking member (520); The locking member (520) is configured to extend into the movable tube (300) under the action of the elastic member and abut against the limiting member (400) to restrict the movement of the limiting member (400) relative to the movable tube (300); under the action of the main tube (200), it exits the movable tube (300) and puts the elastic member into an energy storage state to release the restriction on the limiting member (400).

3. The levitation mechanism of claim 2, wherein, The locking member (520) includes a movable part (521), a connecting part (522), and a locking part (523). The movable part (521) and the locking part (523) are both slidably disposed in the mounting cavity (511). The movable part (521) is correspondingly disposed with the main tube (200). The connecting part (522) connects the movable part (521) and the locking part (523). The elastic member is connected to the connecting part (522). The locking part (523) is configured to extend into or out of the movable tube (300) under the action of the movable part (521) to restrict the movement of the limiting member (400) or release the restriction on the limiting member (400).

4. The levitation mechanism of claim 3, wherein, The movable part (521) is provided with a guide part (524) at one end near the main tube (200). The guide part (524) is configured to abut against the main tube (200) to drive the movable part (521) to exit the movable tube (300).

5. The levitation mechanism of claim 3, wherein, The connecting part (522) includes a first connecting part (5221) and a second connecting part (5222). The first connecting part (5221) is rotatably connected to the movable part (521), and the second connecting part (5222) is rotatably connected to the locking part (523). The first connecting part (5221) and the second connecting part (5222) are rotatably connected, and the elastic member is disposed between the first connecting part (5221) and the second connecting part (5222).

6. The levitation mechanism of claim 5, wherein, The locking assembly (500) further includes a first mounting member (540) and a second mounting member (550), both of which are disposed within the mounting cavity (511). The first connecting part (5221) is rotatably disposed on the first mounting member (540), and the second connecting part (5222) is rotatably disposed on the second mounting member (550).

7. A levitation mechanism according to any one of claims 3 to 6, wherein, The mounting cavity (511) includes a first mounting cavity (5111), a second mounting cavity (5112), and a third mounting cavity (5113) connected in sequence. The first mounting cavity (5111), the second mounting cavity (5112), and the third mounting cavity (5113) are spaced apart along the length direction of the movable tube (300), and the first mounting cavity (5111) is located close to the main tube (200). The first mounting cavity (5111) and the third mounting cavity (5113) are connected to the inner cavity of the movable tube (300). The movable part (521) is disposed in the first mounting cavity (5111), the connecting part (522) is disposed in the second mounting cavity (5112), and the locking part (523) is disposed in the third mounting cavity (5113).

8. The levitation mechanism according to any one of claims 1 to 6, wherein The limiting member (400) is provided with a guide slide (410), which is located between the limiting member (400) and the movable tube (300) and is slidably connected to the movable tube (300).

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 main tube (200) of the suspension mechanism (10) and is connected to the motion rod (100) of the suspension mechanism (10). The drive assembly (30) is used to drive the motion rod (100) of the suspension mechanism (10) to move along the main 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.

Images