Multipurpose folding carrier
By designing a multi-purpose folding pallet truck that combines two-wheel and four-wheel structures, it enables flexible use and heavy-duty transport in complex terrains and confined spaces, solving the problems of load-bearing capacity, flexibility, and easy folding of existing handcarts, and improving service life and safety.
Patent Information
- Application Number
- CN202520598594.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Existing handcarts are insufficient in terms of load-bearing capacity, flexibility, and easy folding, and cannot meet the needs of use in complex terrain and confined spaces. Furthermore, their structure is prone to wear and tear, affecting their service life and safety.
A multi-purpose folding transport vehicle was designed, combining two-wheel and four-wheel structures. The vehicle's state can be transformed through the design of the rear wheel lever and the pivot, simplifying it into a two-wheeled handcart or a four-wheeled cart, making it suitable for different scenarios.
It can be used flexibly in complex terrain or confined spaces. The folded state saves space, and the unfolded state can carry heavy objects and liquids. The structure is simple, the state conversion is convenient and stable, and the service life and safety are improved.
Smart Images
Figure CN223905075U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a carrier field especially a multipurpose folding carrier. BACKGROUND
[0002] In the scenes of supermarkets, logistics, factories and construction, the goods are often moved, and the trolley is an essential carrying tool. In terms of function, in order to meet different use requirements, various types of trolleys appear. However, the existing trolleys still have some problems in actual use. The two-wheeled carrier has limited load capacity and cannot meet the demand of carrying heavy goods. The four-wheeled carrier is not flexible and has poor passability in complex terrain or narrow space, and the folding and storage mode is not convenient, and the space is large. Some of the existing carriers have complex structure, which is easy to cause part wear, structure loosening and other conditions after long time use, affecting the service life and safety. Therefore, the utility model provides a multipurpose folding carrier, which combines two-wheeled trolleys and four-wheeled flat trolleys, so that it can be used in narrow space and can carry heavy objects and liquid objects, and can be used for multiple purposes to solve the above problems. SUMMARY
[0003] In order to solve the problems in the prior art, the utility model provides a multipurpose folding carrier.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] 1. A multipurpose folding carrier, characterized in that: the frame is in the shape of a fence, the top of the frame is provided with a frame handle, the bottom of the frame is provided with a bottom plate, the bottom of the frame is fixed with a front wheel, the middle of the frame is provided with a clamp and a short shaft, a U-shaped frame is connected with the short shaft through a connecting rod, a rear wheel is fixed with a rear wheel pull rod, and the bottom of the rear wheel pull rod is provided with a frame support.
[0006] 2. Further, the front wheel is connected through a long shaft, and the long shaft is connected with the frame through a front wheel support plate.
[0007] 3. Further, the clamp is vertically fixed to the frame, and the clamp comprises a U-shaped clamp, a U-shaped clamp support plate and a connecting column.
[0008] 4. Further, the limit piece is symmetrically arranged in the middle of the short shaft, and the short shaft is arranged on both sides of the frame in pairs.
[0009] 5. Further, the connecting rod is T-shaped, one end of which is fixed with a hollow circular tube, and the other end is perforated parallel to the T-shaped end, and the short shaft passes through the hollow circular tube at the end of the connecting rod.
[0010] 6. Further, the U-shaped frame is fixed to the bottom of the rear wheel pull rod, and the U-shaped frame is hinged with the connecting rod through a bolt.
[0011] 7. Further, the rear wheel pull rod lower cross beam is symmetrically placed with a frame support, which is a horn shape with a groove.
[0012] 8. Further, the U-shaped card clamps the upper cross beam in the folded state, and the rear wheel is extended on the long shaft frame between the long shaft and the frame, and the rear part of the frame is placed in the groove of the support in the unfolded state.
[0013] 9. Further, the rear wheel is fixed at the bottom of the rear wheel pull rod, and the rear wheel is a universal wheel with a rotating shaft and a brake.
[0014] The beneficial effects of the utility model are as follows:
[0015] In complex terrain or narrow space, it is used as a two-wheeled handcart in the folded state, which is flexible and convenient, saves space in the folded state, and is suitable for four-wheeled carts in the unfolded state, which can carry heavy objects and liquid objects that require horizontal movement. The structure of the carrying vehicle is simple and convenient to change state, and the state can be changed by pushing and pulling the rear wheel pull rod. The converted state is stable, and multiple purposes are achieved to solve the above problems. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 A three-dimensional structure schematic diagram of a multi-purpose folding carrier is proposed for the utility model;
[0017] Figure 2 A four-wheeled state schematic diagram of a multi-purpose folding carrier is proposed;
[0018] Figure 3 A two-wheeled state schematic diagram of a multi-purpose folding carrier is proposed;
[0019] Figure 4 A process step schematic diagram from the folded state to the unfolded state of a multi-purpose folding carrier is proposed;
[0020] Figure 5 A multi-purpose folding carrier Figure 3 is proposed, and a partial enlarged schematic diagram in the folded state is shown;
[0021] Figure 6 A multi-purpose folding carrier Figure 1 is proposed, and an enlarged schematic diagram at 7 is shown;
[0022] Figure 7 A multi-purpose folding carrier Figure 1 is proposed, and an enlarged schematic diagram at 8 is shown;
[0023] Figure 8 A multi-purpose folding carrier Figure 1 is proposed, and an enlarged schematic diagram at A is shown;
[0024] Figure 9 A multipurpose folding carrier Figure 1 Explosion schematic diagram at A in the middle;
[0025] Figure label: 1 frame, 2 frame handle, 3 bottom plate, 4 front wheel, 5 front wheel support plate, 6 long shaft, 7 clamp, 7.1 connecting column, 7.2 U-shaped clamp support plate, 7.3 U-shaped clamp, 8 short shaft, 8.1 limit piece, 9 connecting rod, 10 U-shaped frame, 10.1 bolt, 11 rear wheel, 11.1 brake, 11.2 rotating shaft, 12 rear wheel pull rod, 12.1 upper crossbeam, 12.2 lower crossbeam, 13 frame support. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.
[0027] Reference Figures 1-9 A multipurpose folding carrier, including the frame of the fence shape, the frame top is equipped with the frame handle, the frame bottom is equipped with the bottom plate, the frame bottom is fixed with the front wheel, the frame middle part sets up the clamp and the short shaft, the U-shaped frame is connected with the short shaft through the connecting rod, the rear wheel is fixed with the rear wheel pull rod, and the rear wheel pull rod bottom sets up the frame support.
[0028] Specifically, the front wheel is connected through the long shaft, the front wheel support plate connects the long shaft and the frame, and the distance between the long shaft and the frame is enough for the rear wheel to pass through. When folding, the rear wheel passes through the gap between the long shaft and the frame and is placed above the long shaft.
[0029] The clamp is vertically fixed on the frame, the upper crossbeam is buckled out of the U-shaped clamp after folding, and the U-shaped clamp buckle and the long shaft act simultaneously in the folded state, so that the rear wheel, the rear wheel pull rod and the connecting rod are fixed on the frame.
[0030] Specifically, the connecting rod is T-shaped, one end is fixed with a hollow circular tube, and the other end is perforated parallel to the T-shaped end. The short shaft passes through the hollow circular tube at the end of the connecting rod, the U-shaped frame is fixed at the bottom of the rear wheel pull rod, and the U-shaped frame is hinged with the connecting rod through the bolt, so that the two ends of the connecting rod can rotate around the short shaft and the U-shaped frame respectively, thereby driving the overall rotation of the rear wheel and the rear wheel pull rod.
[0031] Specifically, the limit piece is symmetrically placed in the middle of the short shaft, and the short shaft is arranged on both sides of the frame in pairs to limit the lateral deviation of the connecting rod. The frame support is symmetrically placed at the lower crossbeam of the rear wheel pull rod, the rear wheel is placed between the long shaft and the frame, the support is in the shape of a horn with a groove, in the unfolded state, the rear circular steel of the frame is placed in the groove of the support, and the frame is placed on the frame support, thereby transmitting the bearing capacity of the carrier to the rear wheel at the bottom.
[0032] The rear wheel pull rod bottom fixes the rear wheel, and the rear wheel is a universal wheel with a rotating shaft and a brake. When carrying goods in the unfolded state, the direction is changed by rotating, and when stopping, the brake is pressed to make the carrier stationary to prevent the vehicle from sliding.
[0033] Working principle:
[0034] When the carrier is in the folded state, the worker holds the handle with both hands to make the carrier as vertical to the ground as possible, and pushes forward. When the goods are in front, the bottom plate is inserted into the bottom of the goods close to the ground. At this time, only need to pull the handle slightly towards the worker, and the goods are perfectly placed on the carrier. The worker can flexibly push and pull to carry the goods. When there is a special requirement for carrying goods, the carrier can be unfolded. At this time, the worker slightly lifts the carrier upward, holds the handle with one hand and the rear wheel pull rod with the other hand, forces the upper cross beam to separate from the U-shaped card slightly perpendicular to the U-shaped card, then pulls the rear wheel pull rod towards the worker and the ground, and the rear wheel is pulled out from the long shaft. Then the rear wheel, the rear wheel pull rod and the connecting rod rotate around the short shaft until the frame is placed on the frame support. Thus, the deformation is successful. At this time, the frame is parallel to the ground, and the worker can pull the rear wheel pull rod to carry the goods. When the goods are carried and need to be folded and stored, the worker holds the handle on the frame with one hand and the rear wheel pull rod with the other hand, and reversely rotates the rear wheel pull rod to make the rear wheel inserted into the gap between the long shaft and the frame. Continue to rotate, and finally the upper cross beam is inserted into the U-shaped card. Thus, the carrier can be stored in a smaller space.
Claims
1. A multipurpose folding dolly characterized by: The application relates to a folding bicycle frame, which comprises a fence-shaped frame (1), a frame handle (2) arranged at the top of the frame (1), a bottom plate (3) arranged at the bottom of the frame (1), a front wheel (4) fixed to the bottom of the frame (1), a clamp (7) and a short rotating shaft (8) arranged at the middle of the frame (1), a U-shaped frame (10) connected with the short rotating shaft (8) through a connecting rod (9), a rear wheel (11) and a rear wheel pull rod (12) fixed to the bottom of the rear wheel pull rod (12), and a frame support (13) arranged at the bottom of the rear wheel pull rod (12).
2. A multipurpose folding dolly as claimed in claim 1, wherein, The front wheel (4) is connected through a long rotating shaft (6), and a front wheel supporting plate (5) is connected between the long rotating shaft (6) and the frame (1).
3. A multipurpose folding dolly as claimed in claim 1, wherein, The clamp (7) is vertically fixed to the frame (1), and the clamp (7) comprises a U-shaped clamp (7.3), a U-shaped clamp supporting plate (7.2) and a connecting column (7.1).
4. The multipurpose folding dolly of claim 1, wherein, The short rotating shaft (8) is symmetrically arranged with a limiting sheet (8.1) arranged at the middle of the short rotating shaft (8), and the short rotating shaft (8) is arranged on both sides of the frame (1).
5. The utility folding dolly of claim 1 wherein, The connecting rod (9) is T-shaped, one end of which is a hollow circular tube, and the other end is perforated in parallel to the T-shaped end, and the short rotating shaft (8) passes through the hollow circular tube at the end of the connecting rod (9).
6. The utility folding dolly of claim 1 wherein, The U-shaped frame (10) is fixed to the bottom of the rear wheel pull rod (12), and the U-shaped frame (10) is hinged with the connecting rod (9) through a bolt (10.1).
7. The utility folding dolly of claim 1 wherein, The rear wheel pull rod has upper and lower cross beams, namely an upper cross beam (12.1) and a lower cross beam (12.2), and the frame support (13) is symmetrically arranged at the lower cross beam (12.2), and the frame support (13) is in the shape of a horn with a groove.
8. A multipurpose folding dolly as claimed in claim 7, wherein, In the folded state, the U-shaped clamp (7.3) clamps the upper cross beam (12.1), the rear wheel (11) is arranged between the long rotating shaft (6) and the frame (1) and extends out of the long rotating shaft (6), and in the unfolded state, the rear circular steel of the frame (1) is arranged at the groove of the frame support (13).
9. The utility folding dolly of claim 1 wherein, The rear wheel (11) is fixed to the bottom of the rear wheel pull rod, and the rear wheel (11) is a universal wheel with a rotating shaft (11.2) and a brake (11.1).