Support device and working machine

Abstract

The utility model relates to the technical field of mechanical equipment, and provides a supporting device and an operation machine. The supporting device comprises a bearing assembly, at least two swing supporting leg assemblies, a locking assembly and a first detection switch. The at least two swinging supporting leg assemblies are arranged on the bearing assembly, and the swinging supporting leg assemblies are used for switching between an opening position and a retracting position; the locking assembly is arranged on the bearing assembly; under the condition that the swing supporting leg assembly is located at the contraction position, the locking assembly is used for being switched between the locking position and the unlocking position; the first detection switch is arranged on the bearing assembly, the first detection switch is used for detecting position information of the swing supporting leg assembly, the first detection switch is electrically connected with a control system, and the control system is used for controlling the locking assembly to be switched between the locking position and the unlocking position. According to the utility model, the defect that the supporting device in the prior art is extremely inconvenient to operate is overcome, the automatic unlocking and locking of the supporting device are realized, and the operation convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a supporting device and a working machine. Background Art

[0002] During the operation of some working machines, an additional supporting device is required for auxiliary support. The supporting device provided on the working machine needs to be able to switch between two states of contraction and expansion to work better. During operation, the supporting device expands to provide additional support for the working machine; when the operation is completed, the supporting device contracts to save space. For safety, a locking structure is provided on the supporting device, and it can be fixed through the locking structure after the supporting device contracts. However, the existing supporting device is extremely inconvenient to operate and has great potential safety hazards. Summary of the Utility Model

[0003] The utility model provides a supporting device and a working machine to solve the defect that the existing supporting device is extremely inconvenient to operate, realizes the automatic unlocking and locking of the supporting device, and greatly improves the convenience of operation.

[0004] The utility model provides a supporting device, which includes a bearing assembly, at least two swing leg assemblies, a locking assembly and a first detection switch. At least two swing leg assemblies are arranged on the bearing assembly, and the swing leg assemblies are used to switch between an open position and a contracted position; the locking assembly is arranged on the bearing assembly; when the swing leg assemblies are in the contracted position, the locking assembly is used to switch between a locked position and an unlocked position; in the locked position, the locking assembly limits the swing leg assemblies, and the bearing assembly and the swing leg assemblies are in a locked state; in the unlocked position, the limit between the swing leg assemblies and the locking assembly is released, and the bearing assembly and the swing leg assemblies are in an unlocked state; the first detection switch is arranged on the bearing assembly, the first detection switch is used to detect the position information of the swing leg assemblies, the first detection switch is electrically connected to a control system, the control system is electrically connected to the locking assembly, and the control system is used to control the locking assembly to switch between the locked position and the unlocked position.

[0005] According to the supporting device provided by the utility model, the bearing assembly includes a vehicle frame, at least two fixing parts and a mounting bracket. The vehicle frame is used to connect with the vehicle body, and the swing leg assemblies are respectively arranged at both ends of the vehicle frame; the fixing parts are arranged on the vehicle frame at intervals; the mounting bracket is arranged on the fixing parts, the mounting bracket extends from the fixing parts towards the contracted position of the swing leg assemblies, and the locking assembly is arranged on the mounting bracket.

[0006] According to a support device provided by the present utility model, the swing leg assembly is provided with a locking and limiting member, and the mounting bracket is provided with a locking and limiting groove. When the swing leg assembly is in the retracted position, the locking and limiting member is located inside the locking and limiting groove.

[0007] According to a support device provided by the present utility model, the locking assembly includes a first linear pusher and a locking pin. The first linear pusher is arranged on the mounting bracket; the locking pin is connected to the first linear pusher, and the first linear pusher drives the locking pin to switch between the locking position and the unlocking position; when in the locking position, the locking pin penetrates through the locking and limiting groove and the locking and limiting member, and when in the unlocking position, the locking pin disengages from the locking and limiting member.

[0008] According to a support device provided by the present utility model, it further includes a second detection switch and a third detection switch. The second detection switch and the third detection switch are arranged on the mounting bracket at intervals, and both the second detection switch and the third detection switch are electrically connected to the control system; one of the second detection switch and the third detection switch is used to detect whether the locking pin is in the unlocking position, and the other of the second detection switch and the third detection switch is used to detect whether the locking pin is in the locking position.

[0009] According to a support device provided by the present utility model, the mounting bracket includes a first support rod, an inclined rod and a second support rod. The first support rod is connected to the fixing member; the second support rod is arranged at one end of the first support rod away from the fixing member; one end of the inclined rod is connected to the first support rod, and the other end is connected to the second support rod.

[0010] According to a support device provided by the present utility model, an anti-collision pad is arranged on the end face of the first support rod away from the fixing member, and the first detection switch is located on one side of the anti-collision pad.

[0011] According to a support device provided by the present utility model, the swing leg assembly includes a swing leg and a telescopic support leg. The swing leg is rotatably arranged at the end of the vehicle frame, and an adjusting assembly is arranged between the swing leg and the vehicle frame; the telescopic support leg is arranged at one end of the swing leg away from the vehicle frame for supporting the vehicle frame.

[0012] According to a support device provided by the present utility model, the adjustment assembly includes a first hinge rod and a second hinge rod that are hinged to each other. One end of the first hinge rod away from the second hinge rod is hinged to the swing leg, and one end of the second hinge rod away from the first hinge rod is connected to the vehicle frame. A second linear pusher is provided between the first hinge rod or the second hinge rod and the vehicle frame.

[0013] The present utility model also provides a work machine, including the support device described in any one of the above embodiments.

[0014] The support device provided by the present utility model realizes the automatic locking function of the support device in a specific state (such as the contracted state) through an integrated control system and a first detection switch, without manual intervention, improving the convenience and safety of operation. Secondly, the automatic control reduces the errors and oversights that may be caused by manual operation, and reduces the potential safety hazards caused by misoperation. Before and after the operation, the automatic locking and unlocking functions of the support device can respond quickly, improving the overall operation efficiency.

[0015] Since the work machine provided by the present utility model includes the above support device, it also has the beneficial effects of the above support device. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the support device provided by the present utility model in the contracted state.

[0018] Figure 2 It is a schematic structural diagram of the support device provided by the present utility model in the expanded state.

[0019] Figure 3 It is a schematic partial structural diagram of the support device provided by the present utility model.

[0020] Reference numerals: 100: bearing assembly; 110: vehicle frame; 120: fixing member; 130: mounting bracket; 131: first support rod; 132: diagonal rod; 133: second support rod; 134: anti-collision pad; 200: swing leg assembly; 210: swing leg; 220: telescopic support leg; 230: locking and limiting member; 240: base; 300: locking assembly; 310: first linear pusher; 320: coupling; 330: locking bolt; 400: first detection switch; 500: second detection switch; 600: third detection switch; 700: locking and limiting groove; 800: adjustment assembly; 810: first articulated rod; 820: second articulated rod; 830: second linear pusher. Detailed implementation manners

[0021] The following further describes in detail the implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0024] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0025] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0026] The following is combined with Figures 1 - 3 to describe the support device of the present utility model.

[0027] Figure 1 is a schematic structural view of the support device provided by the present utility model in a contracted state. Refer to Figure 1, a support device provided by an embodiment of the present utility model includes a load-bearing assembly 100, two swing leg assemblies 200, a locking assembly 300, and a first detection switch 400. The two swing leg assemblies 200 are respectively arranged at both ends of the load-bearing assembly 100, and the swing leg assemblies 200 are used to switch between an open position and a retracted position; the locking assembly 300 is arranged on the load-bearing assembly 100; when the swing leg assemblies 200 are in the retracted position, the locking assembly 300 is used to switch between a locked position and an unlocked position; in the locked position, the locking assembly 300 limits the swing leg assemblies 200, and the load-bearing assembly 100 and the swing leg assemblies 200 are in a locked state; in the unlocked position, the limit between the swing leg assemblies 200 and the locking assembly 300 is released, and the load-bearing assembly 100 and the swing leg assemblies 200 are in an unlocked state; the first detection switch 400 is arranged on the load-bearing assembly 100, the first detection switch 400 is used to detect the position information of the swing leg assemblies 200, the first detection switch 400 is electrically connected to a control system, the control system is electrically connected to the locking assembly 300, and the control system is used to control the switching of the locking assembly 300 between the locked position and the unlocked position.

[0028] In the above structure, when the support device is in a working state (i.e., the swing leg assemblies 200 are open) or a non-working state (i.e., the swing leg assemblies 200 are retracted), the first detection switch 400 can detect the retracted position information of the swing leg assemblies 200. And the first detection switch 400 is electrically connected to the control system, and can feedback the position information to the control system in real time. The control system judges the retracted state of the swing leg assemblies 200 according to the position information provided by the first detection switch 400. When it is detected that the swing leg assemblies 200 are in the retracted position, the control system automatically triggers the locking assembly 300 to switch from the unlocked position to the locked position, realizing the automatic locking function. On the contrary, when it is necessary to release the lock (for example, when preparing to start work), the control system can receive an unlocking instruction through other means (such as an operation button, a remote control, etc.) and control the locking assembly 300 to switch from the locked position to the unlocked position.

[0029] In this embodiment, by integrating the control system and the first detection switch 400, the automatic locking function of the support device in a specific state (such as the retracted state) is realized, without manual intervention, which improves the convenience and safety of operation. Secondly, the automatic control reduces the errors and negligence that may be caused by manual operation, and reduces the potential safety hazards caused by misoperation. Before and after the operation, the automatic locking and unlocking functions of the support device can respond quickly, improving the overall operation efficiency. In addition, when the locking component 300 is in the locking position, the movement of the swing leg component 200 is restricted physically or mechanically, which can ensure that the support device is stable and reliable in the retracted state. When in the unlocking position, the locking component 300 releases the restriction on the swing leg component 200, allowing it to freely switch to the open position for operation, realizing automatic operation.

[0030] Specifically, the first detection switch 400 can be a proximity switch, which uses the induction of an electromagnetic field by an object to detect the approach of the swing leg component 200. The proximity switch can be inductive, capacitive, magnetic induction type, etc. Taking the inductive proximity switch as an example, when a metal object approaches the sensing surface of the switch, eddy currents will be induced in the metal object, and these eddy currents will generate a magnetic field and affect the circuit inside the switch, thereby causing the switch to emit a signal. In some embodiments, a metal part can be set at a specific position of the swing leg component 200. When the metal part approaches the first detection switch 400 by a certain distance, the first detection switch 400 can be triggered, and the first detection switch 400 transmits this information to the control system, and then the control system controls the locking component 300 to work.

[0031] Figure 2 It is a schematic structural view of the support device provided by the present utility model in the open state.

[0032] Refer to Figure 1 and Figure 2 In some embodiments of the present utility model, the bearing component 100 includes a vehicle frame 110 and at least two fixing members 120. The vehicle frame 110 is used to connect with the vehicle body, and the swing leg components 200 are respectively arranged at both ends of the vehicle frame 110. The two fixing members 120 are arranged on the vehicle frame 110 at intervals; the mounting bracket 130 is arranged on the fixing member 120, and the mounting bracket 130 extends from the fixing member 120 towards the retracted position of the swing leg component 200, and the locking component 300 is arranged on the mounting bracket 130.

[0033] Specifically, the vehicle frame 110 is a plate-like structure, and it can be installed on the working machine by means of bolts or welding, etc. A rotating shaft is provided between the vehicle frame 110 and the swing leg component 200, and the swing leg component 200 rotates around the rotating shaft. When the swing leg component 200 rotates to be perpendicular to the vehicle frame 110, it is in the retracted state (such as Figure 1As shown in the figure, when the angle between the swing leg assembly 200 and the vehicle frame 110 is an obtuse angle, it is in the open state (as Figure 2 shown). The two fixing members 120 are arranged between the two swing leg assemblies 200 and are perpendicular to the vehicle frame 110. The mounting bracket 130 is arranged on the side of the end of the fixing member 120 away from the vehicle frame 110. The two fixing members 120 and the mounting bracket 130 can be symmetrically arranged, and the mounting bracket 130 extends towards the corresponding swing leg assembly 200.

[0034] Figure 3 is a schematic diagram of a partial structure of the support device provided by the present utility model.

[0035] Referring to Figure 2 and Figure 3 , in some embodiments of the present utility model, the swing leg assembly 200 is provided with a locking and limiting member 230, and the mounting bracket 130 is provided with a locking and limiting groove 700. When the swing leg assembly 200 is in the retracted position, the locking and limiting member 230 is located inside the locking and limiting groove 700.

[0036] Specifically, the locking and limiting member 230 is a flat structure and is horizontally arranged. A limiting hole is provided in the middle of the locking and limiting member 230 to facilitate the locking assembly 300 to penetrate for limiting. The locking and limiting groove 700 is a U-shaped structure, and its opening faces the direction of the locking and limiting member 230. When the swing leg assembly 200 drives the locking and limiting member 230 to rotate to the retracted position, the locking and limiting member 230 is exactly located inside the locking and limiting groove 700, but the two do not contact. Locking and limiting holes are also provided on the upper and lower walls of the locking and limiting groove 700, and when the locking and limiting member 230 reaches the retracted position, the locking and limiting holes on the locking and limiting member 230 are collinear with the two locking and limiting holes on the locking and limiting groove 700.

[0037] Referring to Figure 3 , in some embodiments of the present utility model, the locking assembly 300 includes a first linear pusher 310, a coupling 320, and a locking pin 330. The first linear pusher 310 is arranged on the mounting bracket 130; the coupling 320 is arranged between the locking pin 330 and the first linear pusher 310. The first linear pusher 310 drives the coupling 320, and further drives the locking pin 330 to switch between the locking position and the unlocking position; in the locking position, the locking pin 330 penetrates through the locking and limiting groove 700 and the locking and limiting member 230, and in the unlocking position, the locking pin 330 disengages from the locking and limiting member 230.

[0038] In the above structure, the first linear actuator 310 is disposed on the mounting bracket and is the power source of the entire locking assembly 300. It can generate a thrust or a pulling force through linear motion. When locking is required, the first linear actuator 310 is activated to generate a forward thrust. The coupling 320 is disposed between the locking bolt 330 and the first linear actuator 310 and serves to connect and transmit power. The thrust of the first linear actuator 310 is transmitted to the locking bolt 330 through the coupling 320, enabling the locking bolt 330 to move along a predetermined trajectory. The locking bolt 330 switches between a locking position and an unlocking position. In the locking position, the locking bolt 330 penetrates through the locking limit groove 700 and the locking limit member 230 to form a stable locking state, preventing relative movement of related components or structures. In the unlocking position, the first linear actuator 310 moves in the reverse direction, driving the locking bolt 330 to disengage from the locking limit member 230 through the coupling 320, thereby releasing the locking state.

[0039] The locking assembly 300 in this embodiment is composed of a small number of key components and has the advantages of a compact structure and a small occupied space. Moreover, the operation of this embodiment is simple, and only the activation and stop of the first linear actuator 310 need to be controlled to achieve locking and unlocking. Among them, when the locking bolt 330 is in the locking position, it penetrates through the locking limit groove 700 and the locking limit member 230 to form a physical lock, which has high stability and reliability, ensuring the stability of the locking state. For the first linear actuator 310, it can specifically be a linear motor, an electric push rod, a hydraulic or pneumatic cylinder, etc.

[0040] Referring to Figure 3 , in some embodiments of the present utility model, the support device further includes a second detection switch 500 and a third detection switch 600. The second detection switch 500 and the third detection switch 600 are spaced apart on the mounting bracket 130, and both the second detection switch 500 and the third detection switch 600 are electrically connected to the control system; one of the second detection switch 500 and the third detection switch 600 is used to detect whether the locking bolt 330 is in the unlocking position, and the other of the second detection switch 500 and the third detection switch 600 is used to detect whether the locking bolt 330 is in the locking position.

[0041] Specifically, a signal detection block can be set at a specific position of the locking bolt 330. When the signal detection block moves near the second detection switch 500 or the third detection switch 600, the second detection switch 500 or the third detection switch 600 can just detect it. Since the locking bolt 330 moves in a straight line up and down, the second detection switch 500 and the third detection switch 600 can be arranged at an interval up and down. As for the interval distance between the two, it can be determined according to the positions of the signal detection block when the locking bolt 330 is in the locked position and the unlocked position, so that the signal detection block can just be detected by the second detection switch 500 and the third detection switch 600. For example, when the locking bolt 330 just moves to the locked position, the third detection switch 600 can just detect the detection block. At this time, the third detection switch 600 transmits the signal to the control system, and the control system controls the first linear pusher 310 to stop working, that is, the locking is in place. When unlocking is required, an instruction is sent to the control system by means of a remote control or the like. The control system controls the first linear pusher 310 to work, so that the locking bolt 330 moves upward. When the second detection switch 500 detects the detection block, it indicates that the locking bolt 330 has been in the unlocked position, and then transmits this signal to the control system, and the control system controls the first linear pusher 310 to stop working.

[0042] Referring to Figure 3 , in some embodiments of the present invention, the mounting bracket 130 includes a first support rod 131, an inclined rod 132, and a second support rod 133. The first support rod 131 is connected to the fixing member 120; the second support rod 133 is provided at one end of the first support rod 131 away from the fixing member 120; one end of the inclined rod 132 is connected to the first support rod 131, and the other end is connected to the second support rod 133.

[0043] The first support rod 131, the inclined rod 132, and the second support rod 133 can form a stable triangular structure. The first support rod 131 is horizontally arranged, the second support rod 133 is vertically arranged, and the inclined rod 132 is inclined between the first support rod 131 and the second support rod 133. The locking assembly 300, the second detection switch 500, the third detection switch 600, and the locking limit groove 700 are all arranged on the second support rod 133.

[0044] Referring to Figure 3 , in some embodiments of the present invention, an anti-collision pad 134 is provided on the end face of the first support rod 131 away from the fixing member 120, and the first detection switch 400 is located on one side of the anti-collision pad 134.

[0045] It should be noted that one end of the first support rod 131 away from the fixing member 120 protrudes from the second support rod 133, as well as the locking assembly 300, the second detection switch 500, the third detection switch 600 and the locking limit groove 700 provided on the second support rod 133. Such a setting is to ensure that when the swing leg assembly 200 is in the process of retracting, the swing leg assembly 200 first contacts the end of the first support rod 131 away from the fixing member 120. At the same time, an anti-collision pad 134 is provided on the end face of the first support rod 131 away from the mounting bracket 130, and the anti-collision pad 134 can play a role in anti-collision buffering. Specifically, the anti-collision pad 134 can be made of an elastic material such as rubber.

[0046] Referring to Figure 1 , in some embodiments of the present invention, the swing leg assembly 200 includes a swing leg 210 and a telescopic support leg 220. The swing leg 210 is rotatably provided at the end of the vehicle frame 110, and an adjustment assembly 800 is provided between the swing leg 210 and the vehicle frame 110; the telescopic support leg 220 is provided at one end of the swing leg 210 away from the vehicle frame 110, and the telescopic support leg 220 is used to support the vehicle frame 110. A base 240 is provided at the bottom of the telescopic support leg 220.

[0047] Specifically, the swing leg 210 is rotatably connected to the vehicle frame 110 through a rotating shaft, the telescopic support leg 220 is fixedly connected to the swing leg 210 and extends vertically downward from the swing leg 210, and the adjustment assembly 800 is used to drive the swing leg 210 to rotate. The telescopic support leg 220 can be telescoped. When the telescopic support leg 220 rotates in place, it can be extended so that the base 240 contacts the ground, thereby playing a supporting role.

[0048] Referring to Figure 1 , in some embodiments of the present invention, the adjustment assembly 800 includes a first hinge rod 810 and a second hinge rod 820 that are hinged to each other. One end of the first hinge rod 810 away from the second hinge rod 820 is hinged to the swing leg 210, and one end of the second hinge rod 820 away from the first hinge rod 810 is connected to the vehicle frame 110. A second linear pusher 830 is provided between the first hinge rod 810 or the second hinge rod 820 and the vehicle frame 110. Specifically, one end of the second linear pusher 830 is hinged to the vehicle frame 110, and the other end is hinged to the first hinge rod 810 or the second hinge rod 820.

[0049] When it is necessary to deploy the swing support leg assembly 200, the second linear pusher 830 contracts, thereby increasing the angle between the first hinge rod 810 and the second hinge rod 820. Since the vehicle frame 110 is fixed to the working machine, the swing support leg assembly 200 will be pushed to rotate, so that the swing support leg assembly 200 is deployed. When it is necessary to contract the swing support leg assembly 200, the second linear pusher 830 is controlled to extend. The second linear pusher 830 may specifically be a linear motor, an electric push rod, a hydraulic or pneumatic cylinder, etc.

[0050] The present utility model further provides a working machine, including the support device according to any one of the above embodiments. It should be noted that in the embodiments of the present utility model, the types of the working machines are not limited. For example, the working machine may be an excavator, a crane, a loader, a fire truck, etc. In other words, as long as the working machine can use the support device in the present utility model.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A supporting device, characterized in that: include: A bearing assembly (100); At least two swing leg assemblies (200) are arranged on the bearing assembly (100), and the swing leg assemblies (200) are used to switch between an open position and a retracted position; A locking assembly (300) is arranged on the bearing assembly (100); when the swing leg assembly (200) is located at the retracted position, the locking assembly (300) is used to switch between a locked position and an unlocked position; in the locked position, the locking assembly (300) limits the swing leg assembly (200), and the bearing assembly (100) and the swing leg assembly (200) are in a locked state; in the unlocked position, the limit between the swing leg assembly (200) and the locking assembly (300) is released, and the bearing assembly (100) and the swing leg assembly (200) are in an unlocked state; A first detection switch (400) is provided on the bearing assembly (100), the first detection switch (400) is used to detect position information of the swing leg assembly (200), the first detection switch (400) is electrically connected to a control system, the control system is electrically connected to the locking assembly (300), and the control system is used to control the switching of the locking assembly (300) between a locked position and an unlocked position.

2. The support device according to claim 1, characterized in that: The bearing assembly (100) comprises: A vehicle frame (110), the vehicle frame (110) being used to be connected to a vehicle body, and the swing leg assemblies (200) are respectively arranged at two ends of the vehicle frame (110); at least two fixing members (120), the fixing members (120) being arranged at intervals on the vehicle frame (110); The mounting bracket (130) is arranged on the fixing member (120), the mounting bracket (130) extends from the fixing member (120) to the retracted position of the swing leg assembly (200), and the locking assembly (300) is arranged on the mounting bracket (130).

3. The supporting device according to claim 2, characterized in that: The swing leg assembly (200) is provided with a locking limit piece (230), and the mounting bracket (130) is provided with a locking limit groove (700). When the swing leg assembly (200) is located in the retracted position, the locking limit piece (230) is located inside the locking limit groove (700).

4. The supporting device according to claim 3, characterized in that: The locking assembly (300) comprises: A first linear actuator (310) is disposed on the mounting bracket (130); A locking pin (330) is connected to the first linear actuator (310), and the first linear actuator (310) drives the locking pin (330) to switch between the locking position and the unlocking position; when in the locking position, the locking pin (330) passes through the locking limit groove (700) and the locking limit member (230), and when in the unlocking position, the locking pin (330) is disengaged from the locking limit member (230).

5. The supporting device according to claim 4, characterized in that: The invention also comprises a second detection switch (500) and a third detection switch (600), wherein the second detection switch (500) and the third detection switch (600) are arranged at intervals on the mounting bracket (130), and the second detection switch (500) and the third detection switch (600) are both electrically connected to the control system; One of the second detection switch (500) and the third detection switch (600) is used to detect whether the locking latch (330) is located in the unlocking position, and the other of the second detection switch (500) and the third detection switch (600) is used to detect whether the locking latch (330) is located in the locking position.

6. The supporting device according to any one of claims 2 to 5, characterized in that: The mounting bracket (130) comprises: A first support rod (131) connected to the fixing member (120); A second support rod (133) is arranged at an end of the first support rod (131) away from the fixing member (120); An inclined rod (132) has one end connected to the first support rod (131) and the other end connected to the second support rod (133).

7. The supporting device according to claim 6, characterized in that: An anti-collision pad (134) is provided on the end surface of the first support rod (131) away from the fixing member (120), and the first detection switch (400) is located on one side of the anti-collision pad (134).

8. The supporting device according to any one of claims 3 to 5, characterized in that: The swing leg assembly (200) comprises: A swing leg (210) is rotatably disposed at an end of the vehicle frame (110), and an adjustment component (800) is provided between the swing leg (210) and the vehicle frame (110); A telescopic supporting leg (220) is provided at one end of the swinging leg (210) away from the vehicle frame (110) and is used to support the vehicle frame (110).

9. The supporting device according to claim 8, characterized in that: The adjustment assembly (800) includes a first hinged rod (810) and a second hinged rod (820) which are hinged to each other, wherein one end of the first hinged rod (810) away from the second hinged rod (820) is hinged to the swing leg (210), and one end of the second hinged rod (820) away from the first hinged rod (810) is connected to the frame (110), and a second linear actuator (830) is provided between the first hinged rod (810) or the second hinged rod (820) and the frame (110).

10. A working machine, characterized in that: Comprising a supporting device as described in any one of claims 1-9.

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