Suspension mechanism, lifting device and vehicle

Abstract

The invention 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to move towards the fixed pipe, under the action of the unlocking piece of the locking assembly, the movable pipe is withdrawn and separated from the limiting piece, so that limitation on the driving rod is relieved, the cab can move relative to the lifting device, and the situation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] The present application relates to the technical field of transmission equipment, and in particular to a suspension mechanism, a lifting device and a vehicle. Background Art

[0002] The truck includes a cab and a body connected to the cab. A lifting device is installed between the cab and the body. The lifting device is used to realize actions such as lifting and flipping the cab.

[0003] In related technologies, the lifting device includes a driving member and a telescopic assembly. The driving member is fixed to the body of the truck, and the two ends of the telescopic assembly are respectively connected to the cab and the driving member. Under the action of the driving member, the telescopic assembly performs actions such as extension and contraction to realize the flipping and lifting of the cab.

[0004] However, when a truck travels on a bumpy road, the cab is prone to floating up and down. Since the two ends of the lifting mechanism are respectively connected to the cab and the frame, the lifting device is easily damaged by force. Summary of the Invention

[0005] The present application provides a suspension mechanism, a lifting device and a vehicle, which are used 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 by the embodiments of the present application includes a movable tube, a fixed tube, a drive rod, a limiter, a locking assembly, and an unlocking member;

[0007] The drive rod is disposed in the fixed tube and is used to connect to the drive assembly of the lifting device. At least a portion of the fixed tube is slidably disposed in the movable tube. The limiter is slidably disposed in the movable tube and connected to the drive rod. The locking assembly is disposed on the movable tube, and the unlocking member is disposed on the fixed tube.

[0008] Part of the locking assembly is constructed so that when the driving rod drives the movable tube away from the fixed tube, it separates from the unlocking member, extends into the movable tube, and is connected to the limiting member to limit the movement of the driving rod relative to the movable tube; when the driving rod drives the movable tube toward the fixed tube, under the action of the unlocking member, it withdraws from the movable tube and separates from the limiting member to release the restriction on the driving rod.

[0009] In a possible implementation, the suspension mechanism provided in the embodiment of the present application, the locking assembly includes a support member, a locking member, and a first elastic member;

[0010] The support member is arranged on the movable tube and forms a mounting cavity with the movable tube. The locking member is slidably arranged in the mounting cavity. The first elastic member is arranged in the mounting cavity and is located between the locking member and the support member.

[0011] The locking member is constructed so that, under the action of the first elastic member, it extends into the movable tube and is connected to the limiting member; when the unlocking member extends into the installation cavity, it exits the movable tube and is separated from the limiting member under the action of the unlocking member.

[0012] In a possible implementation, the suspension mechanism provided in the embodiment of the present application is provided with a first guide portion on the locking member, and a second guide portion on the unlocking member, wherein the first guide portion and the second guide portion are 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 that the locking member exits the movable tube.

[0014] In one possible implementation, the suspension mechanism provided in an embodiment of the present application has at least two unlocking members, a buffer channel is formed between two adjacent unlocking members, a second elastic member is disposed in the buffer channel, and a connecting portion is provided on the movable tube, the connecting portion being disposed corresponding to the buffer channel;

[0015] The connecting portion 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 an embodiment of the present application, the locking member includes a connected main body and a locking member, the main body is connected to the first elastic member, the first guide portion is arranged on the main body, and the main body and the locking member are arranged corresponding to the buffer channel.

[0017] In one possible implementation, the suspension mechanism provided in an embodiment of the present application has a support member having an extension portion, which is connected to the movable tube and forms a guide channel with the movable tube. The guide channel is connected to the installation cavity to guide the unlocking member to move toward the locking member.

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

[0019] In a possible implementation, in the suspension mechanism provided in the embodiment of the present application, a support portion is provided on the fixed tube, and the unlocking member is provided on the support portion.

[0020] In a second aspect, an embodiment of the present application provides a lifting device, comprising a device body, a drive assembly, and any of the above suspension mechanisms;

[0021] The driving assembly is arranged on the device body, at least part of which extends into the fixed tube of the suspension mechanism and is connected to the driving rod of the suspension mechanism. The driving assembly is used to drive the driving rod of the suspension mechanism to move along the fixed tube of the suspension mechanism.

[0022] In a third aspect, the vehicle provided in an embodiment of the present application includes a vehicle body and the lifting device as described above, and the lifting device is arranged on the vehicle body.

[0023] The present invention provides a suspension mechanism, a lifting device and a vehicle. The suspension mechanism includes a movable tube, a fixed tube, a driving rod, a limiting member, a locking assembly and an unlocking member. When the driving 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, and the unlocking member releases the restriction on the locking assembly, so that part of the locking assembly can enter the movable tube and connect with the limiting member to lock the movable tube on the driving rod to prevent the cab from losing control and flipping over. When the driving rod drives the movable tube to move toward the fixed tube, under the action of the unlocking member of the locking assembly, the movable tube exits and separates from the limiting member to release the restriction on the driving rod, so that the cab can move relative to the lifting device, thereby avoiding damage to the lifting device when the cab floats up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0025] Figure 1 A schematic diagram of the structure of the lifting device provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 AA sectional view of the first state of the suspension mechanism;

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

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

[0029] Figure 5 for Figure 4 An enlarged view of the area indicated by C in FIG.

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

[0031] Figure 7 for Figure 1 AA sectional view of the third state of the suspension mechanism;

[0032] Figure 8 for Figure 1 Schematic diagram of the structure of the suspension mechanism;

[0033] Figure 9for Figure 8 Schematic diagram of some structures in ;

[0034] Figure 10 for Figure 9 Magnified view of the area indicated by D in FIG.

[0035] Description of reference numerals:

[0036] 10. Suspension mechanism;

[0037] 100, movable tube; 110, connecting portion; 120, lifting lug;

[0038] 200, fixed tube; 210, support portion;

[0039] 300, driving rod;

[0040] 400, limit member; 410, guide member;

[0041] 500, locking assembly; 510, support member; 511, mounting cavity; 512, extension portion; 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 member; 610, second guide portion; 620, buffer channel; 630, second elastic member;

[0043] 20. Device body;

[0044] 30. Drive components.

[0045] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0046] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0047] The terms "first," "second," "third," and "fourth," etc. (if any) in the description and claims of the present invention and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in orders other than those illustrated or described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes 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 technology, in the related technology, the lifting device includes a driving rod and a telescopic assembly. The driving rod is fixed to the body of the truck, and the two ends of the telescopic assembly are respectively connected to the cab and the driving rod. Under the action of the driving rod, the telescopic assembly performs actions such as extension and contraction to realize the flipping and lifting of the cab.

[0049] However, when a truck travels on a bumpy road, the cab is prone to floating up and down. Since the two ends of the lifting mechanism are respectively connected to the cab and the frame, the lifting device is easily damaged by force.

[0050] For example, a shock-absorbing and buffering mechanism (e.g., a shock-absorbing spring structure) and a lifting mechanism are provided between the cab and the vehicle body. The shock-absorbing and buffering mechanism is used to cushion and reduce shocks to the cab by absorbing road vibrations and reducing their impact on the driver, thereby improving driving comfort and reducing driver fatigue. The lifting mechanism is used to lift and flip the cab, and is typically used to facilitate maintenance, cleaning, or to increase cab accessibility in special circumstances. However, when a truck travels on bumpy roads, the shock-absorbing and buffering mechanism can provide a cushioning and shock-absorbing effect, but the cab will still experience a certain degree of up and down movement relative to the vehicle body, making the lifting mechanism susceptible to damage due to stress.

[0051] In response to the above-mentioned problems existing in the prior art, the present 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 limiter, 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, and the unlocking member releases the restriction on the locking assembly, so that part of the locking assembly can enter the movable tube and connect with the limiter to lock the movable tube on the drive rod to prevent the cab from losing control and flipping over. When the drive rod drives the movable tube to move toward the fixed tube, under the action of the unlocking member of the locking assembly, the movable tube exits and separates from the limiter to release the restriction on the drive rod, so that the cab can move relative to the lifting device, thereby avoiding damage to the lifting device when the cab floats up and down.

[0052] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

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

[0054] The drive rod 300 is disposed within the fixed tube 200 and is used to connect to the drive assembly 30 of the lifting device. At least a portion of the fixed tube 200 is slidably disposed within the movable tube 100. The limiter 400 is slidably disposed within 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 partial locking assembly 500 is constructed so that, when the driving rod 300 drives the movable tube 100 away from the fixed tube 200, the partial locking assembly 500 separates from the unlocking member 600, extends into the movable tube 100, and connects with the limiting member 400 to limit the movement of the driving rod 300 relative to the movable tube 100; when the driving rod 300 drives the movable tube 100 to move toward the fixed tube 200, the unlocking member 600 withdraws from the movable tube 100 and separates from the limiting member 400 to release the restriction on the driving rod 300.

[0056] The suspension mechanism 10 provided in the embodiment of the present application can be applied to a lifting device, and an object to be lifted can be lifted or lowered by the lifting device.

[0057] It is understandable that, referring to Figures 1 to 3As shown, the suspension mechanism 10 provided in the present application can be applied to a lifting device, which includes a device body 20 and a drive assembly 30. The drive assembly 30 is arranged on the device body 20, and the device body 20 can be arranged on the body of a truck. The fixed tube 200 of the suspension mechanism 10 is arranged 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 cab of the truck. The drive assembly 30 drives the drive rod 300 to telescopically move along the length direction of the fixed tube 200, so as to drive the cab of the truck to perform actions such as lifting, lowering, or flipping through the movable tube 100. Among them, a buffering and shock-absorbing mechanism can be provided between the cab and the body of the truck. When the truck travels on a bumpy road, the buffering connection mechanism reduces the vibration of the cab.

[0058] In order to prevent the lifting device from being damaged by the vibration of the cab, the present application sets a suspension mechanism 10 on the existing lifting device to reduce the damage to the lifting device. Figure 2 and Figure 4 As shown, when the truck is driving, 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 driving rod 300 is separated from the movable tube 100, thereby creating sliding 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, keeping the cab suspended. When the truck encounters bumpy roads, the movable tube 100 can move relative to the driving rod 300 and fixed tube 200 as the cab rises and falls, thus preventing damage to the lifting device.

[0059] Reference Figure 4 、 Figure 6 and Figure 7 As shown, when the lifting device is used to lift (or flip) the cab, the driving assembly 30 of the lifting device drives the driving rod 300 to move along the length of the fixed tube 200 toward the movable tube 100, where it abuts against the end of the movable tube 100, allowing the driving rod 300 to drive the movable tube 100 to move relative to the fixed tube 200. As 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. This allows a portion of the locking assembly 500 to enter the movable tube 100 and connect with the stopper 400, thereby restricting the movement of the driving rod 300 relative to the movable tube 100 (i.e., locking the movable tube 100 to the driving rod 300), thereby locking the cab to the lifting device. Then, under the action of the driving assembly 30, the cab is lifted, so that the movable tube 100 and the driving rod 300 are locked by the locking assembly 500, thereby locking the cab and the lifting device to prevent the cab from rolling over uncontrollably.

[0060] Reference Figure 4 、 Figure 6 and Figure 7 As shown, when the cab is lowered and reset, the lift mechanism's drive assembly 300 drives the drive rod 300 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, a portion of the locking assembly 500, activated by the unlocking member 600, exits the movable tube 100 and disengages from the retaining member 400 within the movable tube 100, thereby releasing the restraint on the drive rod 300. After the cab is lowered and reset, the end of the drive rod 300 is spaced from the end of the movable tube 100, creating a sliding space between the movable tube 100 and the fixed tube 200. This allows the cab to float up and down and move relative to the lift mechanism, thus preventing damage to the lift mechanism.

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

[0062] In summary, in the suspension mechanism 10 provided by the embodiment of the present application, when the driving rod 300 drives the movable tube 100 away from the fixed tube 200, the locking assembly 500 on the movable tube 100 separates from the unlocking member 600 on the fixed tube 200, and the unlocking member 600 releases the restriction on the locking assembly 500. In this way, a portion of the locking assembly 500 can enter the movable tube 100 and connect with the limit member 400, thereby locking the movable tube 100 to the driving rod 300, thereby preventing the cab from uncontrollably tipping over. When the driving rod 300 drives the movable tube 100 toward the fixed tube 200, under the action of the unlocking member 600 of the locking assembly 500, the movable tube 100 exits the movable tube 100 and separates from the limit member 400, thereby releasing the restriction on the driving rod 300, allowing the cab to move relative to the lifting device, thereby preventing the lifting device from being damaged by the force when the cab floats up and down.

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

[0064] The stopper 400 is disposed at the end of the driving rod 300 so as to increase the distance between the end of the driving rod 300 and the end of the movable tube 100 when the locking assembly 500 partially withdraws from the movable tube 100, thereby providing 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 in the mounting cavity 511. The first elastic member 530 is disposed in the mounting cavity 511 and is located between the locking member 520 and the support member 510.

[0066] The locking member 520 is constructed 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 installation cavity 511, it withdraws from 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 supports and mounts the locking member 520 and the first elastic member 530. The locking member is slidably disposed within 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 with or disconnect from the limiting member 400, thereby restricting the movement of the driving rod 300 relative to the movable tube 100 or releasing the restriction on the driving rod 300.

[0068] Specifically, refer to Figure 2 、 Figure 4 and Figure 5 As shown, when the truck is operating normally, the unlocking member 600 extends into the mounting cavity 511 and restricts the locking member 520 from sliding. At this time, the first elastic member 530 is in an energy-storing state (e.g., compressed or extended). This creates space for sliding movement between the movable tube 100 and the fixed tube 200, allowing the cab to float up and down.

[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 stopper 400. Simultaneously, 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. Then, under the action of the first elastic member 530, the locking member 520 slides into the movable tube 100 and abuts against the stopper 400, thereby restricting the movement of the stopper 400 and the drive rod 300 relative to the movable tube 100. At this point, the first elastic member 530 is in its natural state.

[0070] Reference Figure 4 、 Figure 6 and Figure 7 As shown, when the cab lowers and resets, the movable tube 100, under the action of the drive rod 300 and the stopper 400, moves toward the fixed tube 200. 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 stopper 400 and exits the movable tube 100, thereby releasing the restraints on the stopper 400 and the drive rod 300. At this point, the first elastic member 530 is in an energy-storing state (e.g., compressed or extended). This allows the cab to float in a suspended state, allowing it to move up and down.

[0071] For example, the first elastic member 530 may be a spring.

[0072] Reference Figure 5 、 Figure 9 and Figure 10 As shown, in some embodiments, a first guide portion 521 is provided on the locking member 520 , and a second guide portion 610 is provided on the unlocking member 600 , and the first guide portion 521 and the second guide portion 610 are 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 exits the movable tube 100 .

[0074] In the above embodiment, the first guide portion 521 is in sliding contact with the second guide portion 610. When the locking assembly 500 moves toward the unlocking member 600, the unlocking member 600 extends into the mounting cavity 511 of the support member 510 and is in sliding contact with the first guide portion 521 to guide the first guide portion 521 to move in a direction away from the movable tube 100, thereby driving the locking member 520 to exit the movable tube 100.

[0075] The first guide portion 521 may be a guide slope or a guide arc surface, and the second guide portion 610 may also be a guide slope or a guide arc surface. Figure 5 As shown, the first guide portion 521 is a guide arc surface, and the second guide portion 610 is a guide inclined surface.

[0076] To facilitate understanding of directions, an XY plane coordinate system is established in the drawings of the specification, wherein 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 installation cavity 511 of the support member 510 along 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 along 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 portion 110 is provided on the movable tube 100, and the connecting portion 110 is provided corresponding to the buffer channel 620.

[0080] The connecting portion 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 a first direction, the connecting portion 110 and the locking member 520 are sequentially arranged along the extending direction of the buffer channel 620 , and the connecting portion 110 is arranged close to the fixing pipe 200 .

[0082] In the above embodiment, multiple unlocking members 600 are provided to act together on the locking member 520, thereby improving the stability of the overall movement. A buffer channel 620 is formed between two adjacent unlocking members 600, and a second elastic member 630 is disposed within the buffer channel 620. The connecting portion 110 provided on the movable tube 100 can enter the buffer channel 620 and abut against the second elastic member 630. The second elastic member 630 can act as an elastic buffer to prevent the cab from floating too much, causing 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 limit member 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 driving, the unlocking member 600 retains the locking member 520 within the mounting cavity 511, the driving rod 300 is located within the fixed tube 200, and the retaining member 400 is located at the end of the fixed tube 200. Sliding space is provided between the movable tube 100 and the fixed tube 200, allowing the cab to float up and down. During this process, the connecting portion 110 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, preventing the cab from floating excessively.

[0084] Exemplarily, the second elastic member 630 may be a spring.

[0085] The number of unlocking members 600 is at least two, and the number of unlocking members 600 can be two, three, four, five, or more. The movable tube 100 is provided with at least one connecting portion 110, as long as the connecting portion 110 is provided in a one-to-one correspondence with the buffer channel 620. This embodiment of the present application does not impose any further restrictions on this.

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

[0087] In the above embodiment, the main body 522 can slide within the installation 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 portion 523 extends into the movable tube 100 and connects with the stopper 400. Under the action of the first guide portion 521 and the second guide portion 610, the main body 522 can slide within the installation cavity 511 in a direction away from the fixed tube 200, so that the locking portion 523 separates from the stopper 400 and exits the movable tube 100.

[0088] Among them, the main body 522 and the locking part 523 are arranged corresponding to 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 accordingly to facilitate the connection between the connecting part 110 and the second elastic part 630, thereby reducing interference, jamming and other phenomena.

[0089] Reference Figure 7 and Figure 10 As shown, the movable tube 100 is provided with an access hole that communicates with the mounting cavity 511. The locking portion 523 matches the access hole, and the main body 522 is larger than the access hole. This allows the locking portion 523 to pass through the access hole and into the movable tube 100, while preventing the main body 522 from entering the movable tube 100, which would result in a mismatch between the first guide portion 521 and the second guide portion 610 on the main body 522.

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

[0091] In the above embodiment, the guide channel 513 can guide the unlocking member 600 into the installation cavity 511 so that the unlocking member 600 and the locking member 520 are correspondingly abutted. In this way, the locking member 520 can be withdrawn from the movable 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 extended 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 extended through-holes 514. This allows the unlocking member 600 to avoid direct collision with the end of the support member 510, thereby preventing damage.

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

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

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

[0096] In the above embodiment, the mounting through hole 524 can provide a movement guide for the first elastic member 530 along the second direction 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 can be deformed (compressed or stretched) along the second direction to avoid 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 a side of the main body 522 facing 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 the unlocking member 600 is provided on the support portion 210 .

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

[0100] The support portion 210 may be an annular member, and the support portion 210 is sleeved on the outside of the fixed pipe 200 . The support portion 210 may be connected to the fixed pipe 200 by welding.

[0101] Specifically, refer to Figure 9 and Figure 10 As shown, the locking portion 523, the connecting portion 110, and the supporting portion 210 are sequentially arranged along the first direction. Thus, the connecting portion 110 abuts against the second elastic member 630 in the buffer channel 620, and the second elastic member 630 can act as an elastic buffer to prevent the movable tube 100, the supporting member 510, and the supporting portion 210 from colliding and causing 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 with 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 position-limiting member 400 is connected to the movable tube 100 via the guide slide 410 , so that the guide slide 410 supports the displacement of the position-limiting member 400 and ensures the stable movement of the position-limiting member 400 .

[0105] Exemplarily, the guide slide 410 is an annular member that is sleeved on the limit member 400. The outer surface of the guide slide 410 forms a slidable abutment with the inner wall of the movable tube 100. When the limit member 400 is lifted or displaced, the guide slide 410 slides relative to the movable tube 100 along with the lifting and lowering movement of the limit member 400. The guide slide 410 is utilized to support the displacement of the limit member 400, thereby ensuring the stable movement of the limit member 400.

[0106] Exemplarily, the guide slide 410 can be made of a wear-resistant, high-strength metal material or ceramic material. Since the limit member 400 itself has a high displacement frequency and is subject to greater wear, the provision of the guide slide 410 can, on the one hand, enhance the sliding performance and stability of the limit member 400 in the movable tube 100. On the other hand, under the long-term displacement and wear of the limit member 400, the normal operation of the limit member 400 can also be maintained by replacing the guide slide 410. This provision is also conducive to reducing maintenance costs.

[0107] Reference Figure 1 and Figure 3As shown, the lifting device provided in an embodiment of the present application includes a device body 20, a drive assembly 30, and any of the above-described suspension mechanisms 10. The drive assembly 30 is disposed on the device body 20, with at least a portion of the drive assembly 300 extending into the fixed tube 200 of the suspension mechanism 10 and 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 the embodiment of the present application, since the lifting device adopts the suspension mechanism 10 in the above embodiment, it also has the advantages and benefits brought by the above suspension mechanism 10, which will not be further described here.

[0109] The fixing tube 200 is disposed on the device body 20 , and a portion of the driving assembly 30 is located in the fixing tube 200 and connected to the driving rod 300 in the fixing tube 200 .

[0110] The vehicle provided in an embodiment of the present application includes a vehicle body and the above-mentioned lifting device, and the lifting device is arranged on the vehicle body.

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

[0112] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the contents disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

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

Claims

1. A suspension mechanism, characterized in that: It comprises a movable tube (100), a fixed tube (200), a driving rod (300), a limiting member (400), a locking assembly (500) and an unlocking member (600); The driving rod (300) is arranged in the fixed tube (200), and the driving rod (300) is used to connect with the driving assembly (30) of the lifting device. At least a part of the fixed tube (200) is slidably arranged in the movable tube (100). The limiting member (400) is slidably arranged in the movable tube (100) and connected to the driving rod (300). The locking assembly (500) is arranged on the movable tube (100), and the unlocking member (600) is arranged on the fixed tube (200); Part of the locking assembly (500) is constructed so that when the driving 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 is connected to the limiting member (400) to limit the movement of the driving rod (300) relative to the movable tube (100); when the driving rod (300) drives the movable tube (100) to move toward the fixed tube (200), under the action of the unlocking member (600), it withdraws from the movable tube (100) and separates from the limiting member (400) to release the restriction on the driving rod (300).

2. The suspension mechanism according to claim 1, characterized in that: The locking assembly (500) comprises a support member (510), a locking member (520), and a first elastic member (530); The support member (510) is arranged on the movable tube (100) and forms a mounting cavity (511) with the movable tube (100); the locking member (520) is slidably arranged in the mounting cavity (511); and the first elastic member (530) is arranged in the mounting cavity (511) and is 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); and when the unlocking member (600) extends into the installation cavity (511), the unlocking member (600) withdraws from the movable tube (100) and separates from the limiting member (400).

3. The suspension mechanism according to claim 2, characterized in that: 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), and the first guide portion (521) and the second guide portion (610) are provided correspondingly; The first guide portion (521) is configured to, under the action of the second guide portion (610), move away from the movable tube (100) so that the locking member (520) exits the movable tube (100).

4. The suspension mechanism according to claim 3, characterized in that: The number of the 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), a connecting portion (110) is provided on the movable tube (100), and the connecting portion (110) is provided corresponding to the buffer channel (620); The connecting portion (110) is configured to correspondingly 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 suspension mechanism according to claim 4, characterized in that: The locking member (520) comprises a main body (522) and a locking portion (523) connected to each other, the main body (522) being connected to the first elastic member (530), the first guide portion (521) being arranged on the main body (522), and the main body (522) and the locking portion (523) being arranged corresponding to the buffer channel (620).

6. The suspension mechanism according to any one of claims 3 to 5, characterized in that: The support member (510) has an extension portion (512), the extension portion (512) is connected to the movable tube (100), and forms a guide channel (513) with the movable tube (100), and the guide channel (513) is communicated with the installation cavity (511) for guiding the unlocking member (600) to move toward the locking member (520).

7. The suspension mechanism according to any one of claims 2 to 5, characterized in that: A mounting through hole (524) is provided on the locking member (520), and a portion of the first elastic member (530) is located in the mounting through hole (524).

8. The suspension mechanism according to any one of claims 1 to 5, characterized in that: A support portion (210) is provided on the fixing tube (200), and the unlocking member (600) is provided on the support portion (210).

9. A lifting device, characterized in that: It comprises a device body (20), a drive assembly (30), and a suspension mechanism (10) according to any one of claims 1 to 8; The driving assembly (30) is arranged on the device body (20), at least a portion of the driving assembly (30) extends into the fixed tube (200) of the suspension mechanism (10) and is connected to the driving rod (300) of the suspension mechanism (10), and the driving assembly (30) is used to drive the driving rod (300) of the suspension mechanism (10) to move along the fixed tube (200) of the suspension mechanism (10).

10. A vehicle, characterized in that: The invention comprises a vehicle body and the lifting device according to claim 9, wherein the lifting device is arranged on the vehicle body.

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