Undercarriage type labor-saving trolley

Abstract

The utility model discloses an undercarriage type labor-saving trolley which comprises a wheel carrier, a base plate is rotationally installed at one end of the upper surface of the wheel carrier, and articles are placed through the base plate. The moving wheels are symmetrically mounted on the two sides of the end, close to the wheel carrier, of the bottom plate; a hand lifting assembly is rotationally installed at the end, away from the moving wheels, of the lower surface of the wheel frame. An auxiliary rod is rotationally arranged in the middle of the wheel frame, and an auxiliary wheel is rotationally installed at the tail end of the auxiliary rod. The wheel carrier, the auxiliary wheels and the moving wheels are matched to form a triangular supporting structure. According to the structure, the gravity can be uniformly dispersed in the carrying process, the inclination risk of hand pushing is reduced, the stability is improved, and the force needing to be applied when a user pushes the trolley is reduced. A user only needs to slightly push the trolley during use, the trolley can smoothly move under the stable and flexible conditions, and the efficiency and safety of object carrying are greatly improved.

Description

Technical Field

[0001] The utility model relates to an undercarriage type labor-saving trolley, belonging to the technical field of trolleys. Background Art

[0002] A handcart is a widely used tool for transporting a variety of items. Its design and functionality make it crucial in a wide range of fields and scenarios. It can carry and move heavy objects, reducing the burden on labor, especially in homes, warehouses, and construction sites. It can easily maneuver across various surfaces, improving the efficiency of transporting goods. It is used in supermarkets, warehouses, and other places to move goods, facilitating stocking and replenishment. It also reduces labor during delivery and collection. On construction sites, it improves work efficiency by transporting construction materials (such as bricks, cement, and lumber).

[0003] With its simple structure and practical functions, trolleys are widely used in many fields of life and work. Whether in homes, businesses, or industrial places, the use of trolleys has greatly improved work efficiency and safety, becoming one of the indispensable tools in modern life.

[0004] Existing undercarriage trolleys utilize a lever-like design principle, allowing users to push or lift objects with minimal effort. This undercarriage design may reduce effort when starting or moving uphill. However, due to the unstable center of gravity of the trolley, which requires manual control, users must constantly maintain a balanced posture when carrying heavy objects. This results in users shouldering the burden of not only pushing and pulling but also adjusting their center of gravity. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a landing gear type labor-saving trolley to solve the problems of the prior art.

[0006] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0007] A landing gear type labor-saving trolley, comprising:

[0008] A wheel frame, wherein a bottom plate is rotatably mounted on one end of the upper surface of the wheel frame, and items are placed on the bottom plate;

[0009] A group of movable wheels symmetrically mounted on both sides of the bottom plate close to one end of the wheel frame;

[0010] A handheld assembly is rotatably mounted on the lower surface of the wheel frame away from one end of the moving wheel;

[0011] An auxiliary rod is rotatably mounted on the middle portion of the wheel frame, and an auxiliary wheel is rotatably mounted on the end portion of the auxiliary rod;

[0012] The deployed auxiliary wheels and the moving wheels are located in the same plane;

[0013] A triangular support structure is formed by the cooperation of the wheel frame, the auxiliary wheels and the moving wheels.

[0014] As a further improvement, the wheel frame and the base plate are rotationally connected via a rotating shaft.

[0015] As a further improvement, a group of supporting rods are symmetrically arranged on both sides of the base plate, and the width of the base plate is extended by the supporting rods.

[0016] As a further improvement, the wheel frame is symmetrically provided with a group of open first through slots at one end facing the moving wheel, and the auxiliary rod is rotatably mounted on the inner side of the first through slots.

[0017] As a further improvement, a second through slot with an opening is provided in the middle of one end of the wheel frame facing the handheld component;

[0018] The handheld assembly includes a connecting rod connected to the wheel frame and a frame fixedly installed at both ends of the connecting rod. A plug-in portion is provided in the middle of the connecting rod, and the plug-in portion is inserted into the second through slot. The shaft rod passes through the plug-in portion horizontally and is inserted into the second through slot.

[0019] As a further improvement, the connecting rod extends toward the upper surface of the wheel frame to form an abutment portion, and the connecting rod is turned over so that the abutment portion abuts against the upper surface of the wheel frame.

[0020] As a further improvement, the handheld assembly further comprises a first handle fixedly mounted on the middle portion of one end of the frame away from the connecting rod, and the handle is fixedly connected to the frame.

[0021] As a further improvement, the support rod includes a group of auxiliary rods vertically arranged on the side of the base plate, and a horizontal piece connecting two of the auxiliary rods. The auxiliary rods are slidably installed on the side of the base plate, and are fully inserted into the side of the base plate toward the base plate, so that the horizontal piece fits with the side of the base plate.

[0022] As a further improvement, the handheld assembly further comprises a second handle rotatably mounted on the middle portion of one end of the frame away from the connecting rod, the second handle being rotatably connected to the frame via a rotating shaft.

[0023] The beneficial effects of the utility model are:

[0024] The utility model forms a triangular support structure by combining the wheel frame, auxiliary wheels and mobile wheels. This structure can evenly distribute gravity during transportation, reduce the risk of the cart tipping, improve stability, and reduce the force required by the user to push the cart.

[0025] When using it, the user only needs to push it gently, and the trolley can move smoothly under stable and flexible conditions, greatly improving the efficiency and safety of carrying items. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 The utility model is a three-dimensional structural diagram of an undercarriage type labor-saving trolley.

[0028] Figure 2 The utility model is a schematic diagram of the detailed structure of a handheld component of an undercarriage type labor-saving trolley.

[0029] Figure 3 The utility model is a schematic diagram of the first folding of a landing gear type labor-saving trolley.

[0030] Figure 4 This is a second folding schematic diagram of a landing gear type labor-saving trolley of the utility model.

[0031] Figure 5 This is a third folding schematic diagram of a landing gear type labor-saving trolley of the utility model.

[0032] Figure 6 This is the fourth folding schematic diagram of the landing gear type labor-saving trolley of the utility model.

[0033] 1. Wheel frame; 2. Bottom plate; 3. Moving wheel; 4. Handle assembly; 5. Auxiliary rod; 51. Auxiliary wheel; 21. Support rod; 22. Auxiliary rod; 23. Cross piece; 11. First through slot; 12. Second through slot; 41. Connecting rod; 42. Frame; 411. Connecting part; 412. Abutting part; 43. First handle; 44. Second handle. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically specified. Example

[0036] Reference Figure 1-3 As shown, a landing gear type labor-saving trolley includes:

[0037] A wheel frame 1, wherein a bottom plate 2 is rotatably mounted on one end of the upper surface of the wheel frame 1, and items are placed on the bottom plate 2;

[0038] A set of moving wheels 3 symmetrically mounted on both sides of the bottom plate 2 close to one end of the wheel frame 1;

[0039] A handheld component 4 is rotatably mounted on the lower surface of the wheel frame 1 away from one end of the moving wheel 3;

[0040] An auxiliary rod 5 is rotatably mounted in the middle of the wheel frame 1, and an auxiliary wheel 51 is rotatably mounted at the end of the auxiliary rod 5;

[0041] The unfolded auxiliary wheels 51 and the moving wheels 3 are located in the same plane;

[0042] The wheel frame 1 , the auxiliary wheel 51 and the moving wheel 3 cooperate to form a triangular support structure.

[0043] Place the trolley on a flat surface and ensure that all wheels can turn freely. Make sure there are no obstacles on the bottom plate 2 to facilitate the placement of items.

[0044] Place the items to be transported on the bottom plate 2, ensuring that the center of gravity of the items is as close as possible to the center of the bottom plate 2 to maintain stability.

[0045] Use the handle assembly 4 to gently lift the rear end of the trolley (away from the moving wheels 3). The auxiliary rod 5 will then automatically unfold downward, and the auxiliary wheels 51 and the lower edges of the moving wheels 3 will be in contact with the ground in the same plane. The trolley can then be moved.

[0046] When turning, the flexibility of the moving wheels 3 allows the trolley to make small turns, while the auxiliary wheels 51 provide additional stability. After use, ensure that the trolley is parked on a flat surface to avoid sliding.

[0047] The wheel frame 1, auxiliary wheels 51, and mobile wheels 3 cooperate to form a triangular support structure. This structure can evenly distribute gravity during transportation, reduce the risk of the cart tipping, improve stability, and reduce the force required by the user to push the cart.

[0048] When using it, the user only needs to push it gently, and the trolley can move smoothly under stable and flexible conditions, greatly improving the efficiency and safety of carrying items.

[0049] The wheel frame 1 is rotatably connected to the base plate 2 via a rotating shaft. A set of supporting rods 21 are symmetrically arranged on both sides of the base plate 2, and the width of the base plate 2 is extended by the supporting rods 21.

[0050] Connecting the wheel frame 1 to the base plate 2 via a rotating shaft makes the cart more flexible when moving or turning, especially on uneven ground, and can better adapt to different terrains. This connection method helps prevent the cart from tipping over due to a shift in the center of gravity.

[0051] By adding a set of support rods 21 on both sides of the base plate 2, the user can adjust the width of the base plate 2 according to the size of the transported object or the requirements of the site. This is especially useful when transporting large items because it provides a larger support surface and reduces the risk of the items tilting or falling.

[0052] The extension function of the support rod 21 can make the force distribution of the trolley more even, reduce the pressure on a single part, and thus extend the service life of the trolley. At the same time, the flexible design reduces the need for users to use additional operations or additional tools to adapt to different carrying scenarios.

[0053] The wheel frame 1 with a rotating shaft design can enhance the adaptability of the trolley on different ground surfaces, making it easier to operate on rough or inclined ground, thereby reducing resistance during the pushing process and increasing the operator's control.

[0054] The provision of the support rod 21 allows the width of the base plate 2 to be adjusted according to actual needs, greatly improving the stability of the trolley when carrying large or irregularly shaped items, and preventing the items from tilting or falling due to lack of space.

[0055] The wheel frame 1 is symmetrically provided with a group of open first through slots 11 at one end facing the moving wheel 3 , and the auxiliary rod 5 is rotatably mounted inside the first through slot 11 .

[0056] The wheel frame 1 is provided with an open second through slot 12 in the middle portion of one end thereof facing the handheld component 4;

[0057] The handheld component 4 includes a connecting rod 41 connected to the wheel frame 1 and a frame 42 fixedly installed at both ends of the connecting rod 41. A plug-in portion 411 is provided in the middle of the connecting rod 41, and the plug-in portion 411 is inserted into the second through groove 12. The shaft rod passes through the plug-in portion 411 horizontally and is inserted into the second through groove 12.

[0058] By providing a first through slot 11 at one end of the wheel frame 1 facing the moving wheel 3 and rotatably mounting the auxiliary rod 5 inside the through slot, the auxiliary rod 5 can provide additional support when the trolley is moving, helping to maintain the balance and stability of the trolley, especially when pushing heavy objects or encountering uneven ground.

[0059] The insertion of the insertion portion 411 of the handheld component 4 into the second through slot 12 and the shaft rod passing through this structure horizontally ensure the stability of the overall structure of the trolley, avoid loosening, and ensure a firm connection during use.

[0060] The auxiliary rod 5 can be rotated or adjusted through the first through slot 11, providing a certain degree of flexibility. In different usage scenarios, the user can adjust the angle or position of the auxiliary rod 5 according to actual needs to increase flexibility during transportation.

[0061] Among them, the design of the above-mentioned plug-in and shaft rod facilitates quick assembly and disassembly, especially through the through connection of the plug-in and shaft rod, the trolley can be quickly assembled, adjusted or disassembled, thereby improving the convenience of use.

[0062] This modular design also facilitates the repair and maintenance of the trolley, as users can easily disassemble a component for replacement or repair without having to deal with the entire trolley structure.

[0063] The connecting rod 41 extends toward the upper surface of the wheel frame 1 to form an abutting portion 412 . When the connecting rod 41 is turned over, the abutting portion 412 abuts against the upper surface of the wheel frame 1 .

[0064] The handheld assembly 4 further includes a first handle 43 fixedly mounted at the middle portion of one end of the frame 42 away from the connecting rod 41 , and the handle is fixedly connected to the frame 42 .

[0065] This structure provides additional support by allowing the abutment portion 412 of the connecting rod 41 to extend and contact the upper surface of the wheel frame 1. When the connecting rod 41 is tilted to a certain angle, the abutment portion 412 can abut against the wheel frame 1, preventing the connecting rod 41 from tilting too far. This design enhances the structural stability of the cart through physical constraints.

[0066] By providing a first handle 43 on the frame 42 and fixing it to the middle of the end away from the connecting rod 41, it is convenient for the user to control and move the trolley. The setting of the handle provides an additional gripping point, making pushing, pulling and steering operations easier.

[0067] The connecting rod 41 has a reversible design, and the connecting rod 41 and the hand-held assembly 4 can be folded or adjusted to a space-saving state when not in use, making the trolley easier to store.

[0068] The abutment portion 412 keeps the trolley stable during pushing or carrying, reduces the risk of accidents caused by swaying or tilting, and improves reliability during use. Users do not need to worry about excessive movement of the connecting rod 41 causing instability during operation.

[0069] By fixing a handle on the frame 42, the user has more gripping options when operating, which improves the comfort and flexibility of use. In particular, the additional handle can provide better torque control when turning or requiring precise operation.

[0070] The contact point between the abutment portion 412 and the wheel frame 1 reduces vibration and accidental deviation during movement, thereby improving the safety of the trolley when loaded.

[0071] The flip and adjustable properties of the connecting rod 41 enable the trolley to be stored more compactly when not in use, making it suitable for use or placement in environments with limited space. Example

[0072] Reference Figure 4 As shown, this embodiment is further optimized on the basis of embodiment 1, and the support rod 21 includes a group of auxiliary rods 22 vertically arranged on the side of the base plate 2, and a horizontal piece 23 connecting the two auxiliary rods 22. The auxiliary rods 22 are slidably installed on the side of the base plate 2, and are fully inserted into the side of the base plate 2 toward the bottom plate 2, and the horizontal piece 23 is in contact with the side of the base plate 2.

[0073] The vertical arrangement of the auxiliary bars 22, together with the cross pieces 23, forms a sturdy frame structure, which helps improve the stability of the cart when carrying objects. The connection of the cross pieces 23 further ensures the distance and stability between the auxiliary bars 22.

[0074] The auxiliary bars 22 are slidably mounted on the sides of the base plate 2, allowing them to slide inwards when not in use, which makes the trolley more compact and space-saving when stored and transported.

[0075] The auxiliary rod 22 can be fully inserted into the side of the bottom plate 2, which is convenient for quickly adjusting the use state of the supporting rod 21 when a different load-bearing plane is required, and is suitable for carrying items of different sizes and shapes.

[0076] The user can adjust the extension length of the auxiliary rod 22 by sliding according to the different sizes and shapes of the load, thereby achieving stable support for different objects and having a wider range of applications.

[0077] When the trolley is not in use, the auxiliary rod 22 can be completely pushed into the inner side of the bottom plate 2, making the entire trolley structure more compact and convenient for storage or transportation in narrow spaces.

[0078] The frame formed by the auxiliary rod 22 and the transverse piece 23 enhances the lateral support for the load, prevents the items from sliding during movement, and improves the safety of the load, which is particularly important when the road is uneven or when frequent turns are required.

[0079] The adjustable design of the auxiliary rod 22 can easily adapt to different items, expanding the application scenarios of the cart, such as handling goods of various sizes in stores, warehouses and homes. Example

[0080] Reference Figure 5-6 As shown, this embodiment is basically the same as embodiment 1, except that: the handheld component 4 also includes a second handle 44 rotatably mounted on the middle part of one end of the frame 42 away from the connecting rod 41, and the second handle 44 is rotatably connected to the frame 42 via a rotating shaft.

[0081] By mounting the second handle 44 on the end of the frame 42 away from the connecting rod 41 and connecting it to the frame 42 via a rotating shaft, the handle can be adjusted in angle according to the user's needs. This design accommodates the user's operating needs in different postures or angles, such as providing more gripping options when pushing, pulling, or rotating the vehicle.

[0082] When carrying items in a small or complex space, a fixed handle may limit the operating angle, while the rotatable second handle 44 provides more flexibility, allowing the user to adjust the handle position at any time according to the environment, reducing the difficulty of operation.

[0083] Sometimes, pushing or carrying the trolley for a long time can make the user's arms and wrists feel tired. The rotating design of the second handle 44 can reduce this fatigue, and the user can find a more comfortable posture by changing the grip position or angle.

[0084] The rotatable second handle 44 allows the user to flexibly control the trolley, whether it is going straight, turning, or maneuvering in a narrow space. The user can more conveniently adjust the operation mode when facing different terrains or requiring complex turns.

[0085] The rotating design of the second handle 44 enables the trolley to be used in more scenarios, such as pushing and pulling. In different situations where pushing or pulling is required, the user can easily switch the operation mode without being restricted by the fixed handle position.

[0086] The multi-angle grip reduces hand fatigue caused by a single posture and improves the user's operating experience. It is especially suitable for situations where long-term carrying is required.

[0087] Since the second handle 44 can be rotated, the user can fold or adjust the trolley to a compact position when storing it, thereby reducing the occupied space and improving the convenience of storage.

[0088] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art can clearly understand the details of its power mechanism, power supply system, and control system on the premise that they understand the principle of the above-mentioned utility model. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be implemented by simple programming by those skilled in the art.

[0089] The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0090] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A landing gear type labor-saving trolley, characterized in that: include: A wheel frame (1), wherein a bottom plate (2) is rotatably mounted on one end of the upper surface of the wheel frame (1), and items are placed on the bottom plate (2); A group of moving wheels (3) symmetrically mounted on both sides of the bottom plate (2) close to one end of the wheel frame (1); A handheld component (4) is rotatably mounted on one end of the lower surface of the wheel frame (1) away from the moving wheel (3); An auxiliary rod (5) is rotatably mounted on the middle portion of the wheel frame (1), and an auxiliary wheel (51) is rotatably mounted on the end portion of the auxiliary rod (5); The unfolded auxiliary wheel (51) and the moving wheel (3) are located in the same plane; A triangular support structure is formed by the cooperation of the wheel frame (1), the auxiliary wheel (51) and the moving wheel (3).

2. The landing gear type labor-saving trolley according to claim 1, characterized in that: The wheel frame (1) and the bottom plate (2) are rotationally connected via a rotating shaft.

3. The landing gear type labor-saving trolley according to claim 2, characterized in that: A group of supporting rods (21) are symmetrically arranged on both sides of the bottom plate (2), and the width of the bottom plate (2) is extended by the supporting rods (21).

4. The landing gear type labor-saving trolley according to claim 3, characterized in that: The wheel frame (1) is symmetrically provided with a group of open first through slots (11) at one end facing the moving wheel (3), and the auxiliary rod (5) is rotatably mounted inside the first through slot (11).

5. The landing gear type labor-saving trolley according to claim 4, characterized in that: The wheel frame (1) is provided with an open second through slot (12) in the middle portion of one end facing the handheld component (4); The handheld assembly (4) comprises a connecting rod (41) connected to the wheel frame (1), and a frame (42) fixedly mounted on both ends of the connecting rod (41). A plug-in portion (411) is provided in the middle of the connecting rod (41), and the plug-in portion (411) is inserted into the second through slot (12). The shaft rod is inserted into the second through slot (12) by passing through the plug-in portion (411) transversely.

6. The landing gear type labor-saving trolley according to claim 5, characterized in that: The connecting rod (41) extends toward the upper surface of the wheel frame (1) to form an abutment portion (412); when the connecting rod (41) is turned over, the abutment portion (412) abuts against the upper surface of the wheel frame (1).

7. The landing gear type labor-saving trolley according to claim 6, characterized in that: The handheld assembly (4) further comprises a first handle (43) fixedly mounted on the middle portion of one end of the frame (42) away from the connecting rod (41), and the handle is fixedly connected to the frame (42).

8. The landing gear type labor-saving trolley according to claim 3, characterized in that: The supporting rod (21) comprises a group of auxiliary rods (22) vertically arranged on the side of the base plate (2), and a transverse piece (23) connecting two of the auxiliary rods (22). The auxiliary rods (22) are slidably mounted on the side of the base plate (2). By being fully inserted into the side of the base plate (2) toward the inside of the base plate (2), the transverse piece (23) is in contact with the side of the base plate (2).

9. The landing gear type labor-saving trolley according to claim 6, characterized in that: The handheld assembly (4) further comprises a second handle (44) rotatably mounted on the middle portion of one end of the frame (42) away from the connecting rod (41), and the second handle (44) is rotatably connected to the frame (42) via a rotating shaft.

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