A wearable wheeled load-bearing assistance device

Abstract

The present application provides a wearable wheeled load-bearing assistance device, which includes a wearing mechanism, a universal joint assembly, a buffer bracket, a hinge assembly, and an assistance trolley; wherein, the wearing mechanism is used to be worn on the human body; the front end of the buffer bracket is connected to the wearing mechanism through the universal joint assembly, and the rear end is connected to the assistance trolley through the hinge assembly; the assistance trolley includes a bearing base for carrying goods, and wheels are arranged at the bottom of the bearing base, and hub motors are arranged inside the wheels to achieve auxiliary assistance. The wearable wheeled load-bearing assistance device provided by the present application can be used as an auxiliary assistance device for individual combat, and can effectively reduce the energy loss generated by soldiers due to load-bearing.

Description

Technical Field

[0001] This application relates to the technical field of mechanical auxiliary devices, and particularly relates to a wearable wheeled load-bearing assistance device. Background Art

[0002] When soldiers conduct operations in environments such as plateaus and mountains, a large amount of physical strength will be lost due to the load of the backpack, thus reducing the combat effectiveness. Currently, common products for individual soldier load-bearing assistance are mechanical exoskeleton robots or backpacks equipped with ducted thrusters. For example, a patent with Chinese patent application number 201520069846.0 discloses a backpack equipped with a ducted thruster. A ducted thruster originally used for aircraft is installed outside the backpack, and lift is provided by the ducted thruster to reduce the load of the soldier. This kind of backpack requires a large volume and a large battery capacity, which is not conducive to the continuous combat of individual soldiers. Moreover, the mechanical structure is complex, the cost is high, and it is easy to be damaged. A patent with Chinese patent application number 201210092998.3 discloses a human hip exoskeleton mechanical bearing device, which can transfer the human load to the leg bearing device and has a certain buffer and shock absorption function. This device has a simple structure, but it will interfere with the movement of soldiers, cannot ensure the flexibility of soldiers at a relatively high speed, and cannot meet the various combat needs of soldiers.

[0003] Based on this, providing a simple-structured, easy-to-use and efficient auxiliary assistance device for individual soldier combat has become an urgent technical problem to be solved. Summary of the Invention

[0004] This application provides a wearable wheeled load-bearing assistance device, which is an auxiliary assistance device for individual soldier combat and can effectively reduce the energy loss caused by the load of soldiers.

[0005] In a first aspect, a wearable wheeled load-bearing assistance device is provided, including a wearing mechanism, a universal joint assembly, a buffer bracket, a hinge assembly, and an assistance cart; wherein, the wearing mechanism is used to be worn on the human body; the front end of the buffer bracket is connected to the wearing mechanism through the universal joint assembly, and the rear end is connected to the assistance cart through the hinge assembly; the assistance cart includes a bearing base for carrying goods, and wheels are arranged at the bottom of the bearing base, and hub motors are arranged inside the wheels to achieve auxiliary assistance.

[0006] According to the wearable wheeled load-bearing assistance device provided by the embodiments of this application, the assistance cart includes hub motors and can perform auxiliary assistance, which can effectively reduce the energy loss caused by the load of soldiers, and further improve the combat ability of individual soldiers. The backboard of this application is rotationally connected to the buffer bracket through the universal joint assembly. During actual combat, it can facilitate soldiers to perform actions such as jumping and crawling, and reduce the interference of the assistance device on the movement of soldiers.

[0007] The wearing mechanism of this application is connected to the power-assisted cart through a buffer bracket. The buffer bracket can buffer the mutual force (relative displacement) between the wearing mechanism and the power-assisted cart, thereby improving the comfort of soldiers when using it, and reducing the interference of the power-assisted device on the movement of soldiers.

[0008] The buffer bracket and the power-assisted cart are hinged to each other through a hinge assembly, which can also play a certain buffering role and reduce the interference of the power-assisted device on the movement of soldiers. In addition, it can also improve the flexibility of use. When not in use, the device can be folded to reduce the storage space and facilitate carrying.

[0009] The wearable wheeled load-bearing power-assisted device provided by the embodiment of this application has the advantages of simple structure, low cost, simple and convenient operation, and high flexibility.

[0010] In a possible design, the hinge assembly includes a hinge shaft, a bushing, and a positioning component. The hinge shaft and the bushing are hinged to each other; the hinge shaft is fixed to one of the buffer bracket and the power-assisted cart; the bushing is fixed to the other of the buffer bracket and the power-assisted cart; the positioning component is used to rotate and position the hinge shaft and the bushing to position the buffer bracket at the working position or the folded position.

[0011] In a possible design, the positioning component includes: a positioning jack, opened on the bushing; a fixed baffle, fixed on the bushing, with a through hole opened thereon, and the through hole is correspondingly arranged with the positioning jack; a positioning pin, movably arranged in the positioning jack. The positioning pin includes a head and a rod part connected to each other. The diameter of the head is larger than that of the rod part. The tail end of the rod part passes through the through hole to penetrate out of the jack for the user to perform a pulling-out operation; a positioning spring, sleeved on the rod part, one end abuts against the head, and the other end abuts against the inner wall surface of the fixed baffle. The positioning spring is used to abut the head against the first positioning groove or the second positioning groove opened on the hinge shaft; when the head is abutted in the first positioning groove, the buffer bracket is positioned at the working position; when the head is abutted in the second positioning groove, the buffer bracket is positioned at the folded position.

[0012] In a possible design, the bushing is detachably connected to the buffer bracket through a bushing connecting block.

[0013] In a possible design, the wearing mechanism includes a back plate and a belt. The back plate is fixed to the belt, and the buffer bracket is connected to the back plate through the universal joint assembly.

[0014] In a possible design, the assisting trolley further includes a bearing plate and a folding plate. The front end of the bearing plate is connected to the buffer bracket, and the rear end is connected to the front end of the bearing base. The folding plate is hinged to the rear end of the bearing base.

[0015] In a possible design, a shock-absorbing base is provided at the bottom of the bearing base. The wheels are rotatably arranged on the shock-absorbing base, and a shock-absorbing component is provided between the bearing base and the shock-absorbing base.

[0016] In a possible design, the buffer bracket includes a front fixing plate, a rear fixing plate, and two elastic connecting rods designed in a "V" shape. The elastic connecting rods include a front connecting rod, a shock-absorbing spring, and a rear connecting rod connected in sequence. The two connecting rods are connected to the front fixing plate, and the two rear connecting rods are connected to the rear fixing plate.

[0017] In a possible design, the universal joint assembly includes a connecting ball and a socket member that cooperate with each other; the connecting ball is fixedly connected to one of the back plate and the buffer bracket, and the socket member is connected to the other of the back plate and the buffer bracket.

[0018] In a possible design, the bushing connecting blocks of the two sets of assisting devices are disassembled and separated from the buffer bracket, and the two bushing connecting blocks are fixedly connected, and then the two assisting trolleys are assembled into a 4-wheel assisting device. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the wearable wheeled load-carrying assisting device provided by an embodiment of the present application.

[0020] Figure 2 is a schematic structural diagram of the wearable wheeled load-carrying assisting device after folding provided by an embodiment of the present application.

[0021] Figure 3 is an exploded schematic diagram of the wearable wheeled load-carrying assisting device provided by an embodiment of the present application.

[0022] Figure 4 is a schematic structural diagram of the wearing mechanism provided by an embodiment of the present application.

[0023] Figure 5 is a schematic structural diagram of the buffer bracket provided by an embodiment of the present application.

[0024] Figure 6 is a schematic structural diagram of the assisting trolley provided by an embodiment of the present application.

[0025] Figure 7 is Figure 1 an enlarged view of the back view of area A in

[0026] Figure 8 is an exploded view of the hinge assembly provided by an embodiment of the present application.

[0027] Figure 9 is a schematic structural view of the hinge shaft provided by an embodiment of the present application.

[0028] Figure 10 is a schematic structural view after modular splicing of two assist trolleys.

[0029] Reference numerals: 10, wearing mechanism; 11, back plate; 12, belt; 13, first connecting column;

[0030] 20, universal joint assembly; 21, connecting ball; 22, ball socket member;

[0031] 30, buffer bracket; 31, elastic connecting rod; 311, shock-absorbing spring; 312, front connecting rod; 313, rear connecting rod; 32, front fixing plate; 33, rear fixing plate; 34, second connecting column; 35, bushing connecting block; 36, first mounting screw hole;

[0032] 40, hinge assembly; 41, hinge shaft; 42, bushing; 43, fixed baffle; 44, positioning member; 45, positioning spring; 46, positioning socket; 47, first positioning groove; 48, second positioning groove;

[0033] 50, assist trolley; 51, bearing plate; 52, bearing base; 53, wheel; 54, shock-absorbing base; 55, folding plate; 56, shock-absorbing assembly; 57, connecting plate; 58, hinge shaft mounting seat; 59, second mounting screw hole. Detailed Description of the Embodiment

[0034] The following details the embodiments of the present application. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" 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, an electrical connection, or a connection that allows mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "side", "front", "rear", etc. is based on the installation orientation or positional relationship, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0038] In the description of the present application, it should be noted that the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0039] It should also be noted that in the embodiments of the present application, the same reference numerals are used to represent the same components or the same parts. For the same parts in the embodiments of the present application, only one of the parts or components may be marked with a reference numeral in the figure. It should be understood that for other identical parts or components, the reference numerals are equally applicable.

[0040] The embodiments of the present application provide a wearable wheeled load-bearing assistance device, which can be used as an auxiliary assistance device for individual combat and can effectively reduce the energy loss caused by the load of soldiers. Figure 1 FIG. is a schematic structural diagram of the wearable wheeled load-bearing assistance device provided by the embodiments of the present application. Figure 2 FIG. is a schematic structural diagram of the wearable wheeled load-bearing assistance device after folding provided by the embodiments of the present application. Figure 3 FIG. is an exploded schematic diagram of the wearable wheeled load-bearing assistance device provided by the embodiments of the present application.

[0041] As Figures 1-3 shown, the wearable wheeled load-bearing assistance device provided by the embodiments of the present application includes a wearing mechanism 10, a universal joint assembly 20, a buffer bracket 30, a hinge assembly 40, and a power-assisted trolley 50.

[0042] Among them, the wearing mechanism 10 is used to be worn on the human body. The wearing mechanism 10 includes a back plate 11. The front end of the buffer bracket 30 is connected to the back plate 11 through a universal joint assembly 20, and the rear end is connected to the power-assisted cart 50 through a hinge assembly 40. The power-assisted cart 50 includes a carrying base 52 which is used to carry goods. Wheels 53 are provided at the bottom of the carrying base 52, and hub motors are arranged inside the wheels 53 to achieve auxiliary power assistance.

[0043] According to the wearable wheeled load-bearing power-assisted device provided by the embodiment of the present application, the power-assisted cart 50 is equipped with hub motors and can provide auxiliary power assistance, which can effectively reduce the energy loss of soldiers caused by carrying loads, and thus can improve the combat ability of individual soldiers. In the present application, the back plate 11 and the buffer bracket 30 are rotatably connected through the universal joint assembly 20. During actual combat, it is convenient for soldiers to perform actions such as jumping and crawling, and reduces the interference of the power-assisted device on the movement of soldiers.

[0044] In the present application, the back plate 11 is connected to the power-assisted cart 50 through the buffer bracket 30. The buffer bracket 30 can buffer the mutual force (relative displacement) between the back plate 11 and the power-assisted cart 50, thereby improving the comfort of use for soldiers and reducing the interference of the power-assisted device on the movement of soldiers.

[0045] The buffer bracket 30 and the power-assisted cart 50 are hinged to each other through the hinge assembly 40, which can also play a certain buffering role and reduce the interference of the power-assisted device on the movement of soldiers. In addition, it can also improve the flexibility of use. When not in use, the device can be folded to reduce the storage space and is convenient to carry.

[0046] The wearable wheeled load-bearing power-assisted device provided by the embodiment of the present application has the advantages of simple structure, low cost, simple and convenient operation, and high flexibility.

[0047] The wearable wheeled load-bearing power-assisted device provided by the embodiment of the present application can be applied in both military and civilian fields. Militarily, it can provide an electric foldable cart that replaces the soldier's load and meets the combat standard quality for soldiers in plateau and mountainous operations, effectively reducing the energy loss of soldiers caused by carrying loads. Civilians, it can help the staff carrying disinfection liquid tanks during the epidemic, effectively reducing the energy loss of the staff caused by carrying loads.

[0048] Optionally, the hub motor controller adopts wireless control and can control the vehicle speed through wireless connection (such as through a remote control), so as to facilitate the quick donning and doffing and use of the power-assisted device.

[0049] Figure 4 It is a schematic structural diagram of the wearing mechanism 10 provided by the embodiment of the present application. Figure 5It is a schematic structural diagram of the buffer bracket 30 provided by an embodiment of the present application. Figure 6 It is a schematic structural diagram of the power-assisted trolley 50 provided by an embodiment of the present application. Figure 7 It is Figure 1 An enlarged view of the back view of area A in

[0050] As Figures 4-7 shown, in the embodiment of the present application, the hinge assembly 40 includes a hinge shaft 41, a bushing 42 and a positioning assembly. The hinge shaft 41 and the bushing 42 are hinged to each other. The hinge shaft 41 is fixed on the power-assisted trolley 50, and the bushing 42 is fixed on the buffer bracket 30; the positioning assembly is used to rotate and position the hinge shaft 41 and the bushing 42 to position the buffer bracket 30 at the working position or the folded position.

[0051] Specifically, the hinge shaft 41 is fixedly installed on the connecting plate 57 of the power-assisted trolley 50 through a hinge shaft mounting seat 58, and the bushing 42 is fixedly installed on the buffer bracket 30 through a bushing connection block 35.

[0052] At this time, a second mounting screw hole 59 can be opened on the hinge shaft mounting seat 58, and the hinge shaft mounting seat 58 is connected to the connecting plate 57 by means of bolt connection.

[0053] The positioning assembly is used to rotate and position the hinge shaft 41 and the bushing 42. When the power-assisted device needs to be used, the bushing 42 is rotated relative to the hinge shaft 41 to a preset position to position the buffer bracket 30 at the working position as shown in Figure 1 so that the power-assisted device can be used for power assistance. When the use is completed, the bushing 42 is rotated relative to the hinge shaft 41 to another preset position to position the buffer bracket 30 at the folded position as shown in Figure 2 so that it is convenient to store and carry the power-assisted device at this time.

[0054] Optionally, in other embodiments, the installation positions of the hinge shaft 41 and the bushing 42 can be swapped. For example, the hinge shaft 41 can be fixed on the buffer bracket 30, and the bushing 42 can be fixed on the power-assisted trolley 50.

[0055] The positioning assembly will be further introduced below with reference to the accompanying drawings. Figure 8 It is an exploded view of the hinge assembly 40 provided by an embodiment of the present application. Figure 9 It is a schematic structural diagram of the hinge shaft 41 provided by an embodiment of the present application.

[0056] As Figures 5-9 shown, the positioning assembly includes:

[0057] A positioning jack 46, which is opened on the bushing 42;

[0058] The fixed baffle 43 is fixed on the bushing 42, and a through hole is provided thereon, and the through hole is correspondingly arranged with the positioning jack 46;

[0059] The positioning pin 44 is movably arranged in the positioning jack 46. The positioning pin 44 includes a head and a rod portion connected to each other. The diameter of the head is larger than that of the rod portion. The tail end of the rod portion passes through the through hole to penetrate out of the jack 46 for the user to perform a pulling-out operation.

[0060] The positioning spring 45 is sleeved on the rod portion, one end abuts against the head, and the other end abuts against the inner wall surface of the fixed baffle 43. The positioning spring 45 is used to abut the head in the first positioning groove 47 or the second positioning groove 48 provided on the hinge shaft 41;

[0061] When the head is abutted in the first positioning groove 47, the buffer bracket 30 is positioned at the working position; when the head is abutted in the second positioning groove 48, the buffer bracket 30 is positioned at the folding position.

[0062] When a rotation operation is required, for example, when it is necessary to open the assist device from the folded state for use. At this time, the user can pull out the positioning pin 44 outward against the elastic force of the positioning spring 45, and the head disengages from the second positioning groove 48. At this time, rotate the buffer bracket 30. When the assist device is completely opened, the user releases the hand, and the head of the positioning pin 44 is inserted into the first positioning groove 47 under the action of the elastic force of the positioning spring 45, and the buffer bracket 30 is positioned at the working position.

[0063] When it is necessary to enter the folded state from the opened state to store the assist device. At this time, the user can pull out the positioning pin 44 outward against the elastic force of the positioning spring 45, and the head disengages from the first positioning groove 47. At this time, rotate the buffer bracket 30. When the assist device is completely folded, the user releases the hand, and the head of the positioning pin 44 is inserted into the second positioning groove 48 under the action of the elastic force of the positioning spring 45, and the buffer bracket 30 is positioned at the folding position.

[0064] As Figure 3 、 4 shown, the wearing mechanism 10 further includes a belt 12, and the back plate 11 is fixed on the belt 12 to facilitate the user to wear. In other embodiments, the wearing mechanism 10 may further include a shoulder strap, etc., and the present application does not limit this.

[0065] As Figures 1-5 shown, the universal joint assembly 20 includes a connecting ball 21 and a ball socket member 22 that are used in cooperation with each other, and the connecting ball 21 is rotatably arranged in the ball socket member 22.

[0066] The ball socket member 22 is fixedly connected to the back plate 11 through the first connecting column 13, and the connecting ball 21 is fixedly connected to the buffer bracket 30 through the second connecting column 34.

[0067] Optionally, in other embodiments, the installation positions of the connecting ball 21 and the ball socket member 22 can be swapped. For example, the connecting ball 21 can be fixed to the back plate 11, and the ball socket member 22 can be fixed to the buffer bracket 30.

[0068] As Figure 5 shown, the buffer bracket 30 includes a front fixing plate 32, a rear fixing plate 33, and two elastic connecting rods 31 designed in an "eight" shape. The elastic connecting rods 31 include a front connecting rod 312, a shock-absorbing spring 311, and a rear connecting rod 313 connected in sequence. The two connecting rods 312 are connected to the front fixing plate 32, and the two rear connecting rods 313 are connected to the rear fixing plate 33. The front fixing plate 32 is fixedly connected to the second connecting column 34, and the rear fixing plate 33 is fixedly connected to the bushing connection block 35.

[0069] As Figure 3 、 6 shown, the assisting trolley 50 further includes a bearing plate 51 and a folding plate 55. The front end of the bearing plate 51 is connected to the buffer bracket 30, the rear end is connected to the front end of the bearing base 52, and the folding plate 55 is hinged to the rear end of the bearing base 52.

[0070] A shock-absorbing base 56 is provided at the bottom of the bearing base 52, the wheels 43 are rotatably arranged on the shock-absorbing base 56, and a shock-absorbing assembly 56 is provided between the bearing base 52 and the shock-absorbing base 56.

[0071] In plateau and mountain environments, uneven roads will interfere with the movement of the assisting trolley 50. The gravity of the load will cause the assisting trolley 50 to bear greater pressure when jittering. When the traveling speed of the assisting trolley 50 deviates from the moving speed of the soldier, the assisting trolley 50 will also interfere with the movement of people. Therefore, it is necessary to design the vehicle body to have buffer and shock absorption in two dimensions: up and down, and front and back.

[0072] As Figure 7 、 8 shown, the bushing 42 is detachably connected to the buffer bracket 30 through the bushing connection block 35. Specifically, the bushing connection block 35 realizes the detachable connection between the two through the first mounting screw hole 36 opened on the rear fixing plate 33.

[0073] The assisting device provided by the embodiment of the present application has a modular design, and multiple assisting trolleys 50 can be spliced and used. Figure 10 is a schematic structural diagram of two assisting trolleys 50 after modular splicing.

[0074] At this time, the bushing connection blocks 35 of the two sets of assisting devices and the buffer brackets 30 (i.e., the fixing plates 33) are disassembled and separated from each other, and the two bushing connection blocks 35 are fixedly connected, and then the two assisting trolleys 50 are assembled into the structure as shown in Figure 10The 4-wheel assist device shown. Through the above settings, two assist trolleys 50 can be spliced into a four-wheel flatbed cart for transporting the wounded or heavier loads, transforming the product from a combination of human and vehicle to independent control, and enhancing the diversity of the assist device.

[0075] Optionally, at this time, the operation of the 4-wheel assist device can be controlled by the remote control of one of the assist devices, or the operation of the 4-wheel assist device can be controlled simultaneously by the two remote controls of the two assist devices. This application does not make any limitations in this regard.

[0076] As described above, the above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A wearable wheeled load assistance device, characterized in that, It includes a wearing mechanism (10), a universal joint assembly (20), a buffer bracket (30), a hinge assembly (40), and an assisting trolley (50); among them, The wearing mechanism (10) is used to be worn on the human body, and the wearing mechanism (10) includes a back plate (11); The front end of the buffer bracket (30) is connected to the wearing mechanism (10) through the universal joint assembly (20), and the rear end is connected to the assisting trolley (50) through the hinge assembly (40); The assisting trolley (50) includes a carrying base (52), the carrying base (52) is used to carry goods, wheels (53) are arranged at the bottom of the carrying base (52), and hub motors are arranged inside the wheels (53) to achieve auxiliary assistance; The hinge assembly (40) includes a hinge shaft (41), a bushing (42), and a positioning component, and the hinge shaft (41) and the bushing (42) are hinged to each other; The hinge shaft (41) is fixed to one of the buffer bracket (30) and the assisting trolley (50); the bushing (42) is fixed to the other of the buffer bracket (30) and the assisting trolley (50); The positioning component is used to perform rotational positioning on the hinge shaft (41) and the bushing (42) to position the buffer bracket (30) at the working position or the folded position; The positioning component includes: A positioning jack (46) is opened on the bushing (42); A fixed baffle (43) is fixed on the bushing (42), and a through hole is opened thereon, and the through hole is arranged corresponding to the positioning jack (46); A positioning pin (44) is movably arranged in the positioning jack (46), the positioning pin (44) includes a head and a rod portion connected to each other, the diameter of the head is larger than that of the rod portion, and the tail end of the rod portion passes through the through hole to penetrate out of the jack (46) for the user to perform a pulling-out operation; A positioning spring (45) is sleeved on the rod portion, one end abuts against the head, and the other end abuts against the inner wall surface of the fixed baffle (43), and the positioning spring (45) is used to abut the head against the first positioning groove (47) or the second positioning groove (48) opened on the hinge shaft (41); When the head is abutted in the first positioning groove (47), the buffer bracket (30) is positioned at the working position; when the head is abutted in the second positioning groove (48), the buffer bracket (30) is positioned at the folded position; The buffer bracket (30) includes a front fixing plate (32), a rear fixing plate (33), and two elastic connecting rods (31) designed in an "eight" shape. The elastic connecting rods (31) include a front connecting rod (312), a shock-absorbing spring (311), and a rear connecting rod (313) connected in sequence. The two connecting rods (312) are connected to the front fixing plate (32), and the two rear connecting rods (313) are connected to the rear fixing plate (33).

2. The assisting device according to claim 1, wherein The bushing (42) is detachably connected to the buffer bracket (30) through a bushing connection block (35).

3. The assisting device according to claim 1 or 2, characterized in that, The wearing mechanism (10) includes a waistband (12), the back plate (11) is fixed to the waistband (12), and the buffer bracket (30) is connected to the back plate (11) through the universal joint assembly (20).

4. The assisting device according to claim 1 or 2, characterized in that, The power-assisted trolley (50) further includes a bearing plate (51) and a folding plate (55). The front end of the bearing plate (51) is connected to the buffer bracket (30), the rear end is connected to the front end of the bearing base (52), and the folding plate (55) is hinged to the rear end of the bearing base (52).

5. The assisting device according to claim 1 or 2, wherein, A shock-absorbing base (54) is provided at the bottom of the bearing base (52), the wheel (53) is rotatably provided on the shock-absorbing base (54), and a shock-absorbing component (56) is provided between the bearing base (52) and the shock-absorbing base (54).

6. The assisting device according to claim 3, wherein The universal joint assembly (20) includes a connection ball (21) and a ball socket member (22) that are used in cooperation with each other; The connection ball (21) is fixedly connected to one of the back plate (11) and the buffer bracket (30), and the ball socket member (22) is connected to the other of the back plate (11) and the buffer bracket (30).

7. The power assist device according to claim 2, wherein Disassemble and separate the bushing connection blocks (35) of the two sets of the power-assisted devices from the buffer brackets (30), fixedly connect the two bushing connection blocks (35), and then assemble the two power-assisted trolleys (50) into a 4-wheel power-assisted device.

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