Detachable double-wheel trolley

Abstract

The utility model relates to the technical field of trolleys, and discloses a detachable double-wheel trolley which comprises a trolley body, two handles are arranged on the side wall of the trolley body, a first connecting rod and a second connecting rod are arranged at the bottom of the trolley body, two supporting legs are fixed to the bottom of the first connecting rod, wheels are rotationally arranged at the two ends of the second connecting rod in a sleeved mode, and the wheels are fixed to the two ends of the second connecting rod in a sleeved mode. The first connecting rod and the second connecting rod are each provided with a plurality of sets of connecting pieces, the bottom of the trolley is fixedly connected with a plurality of guide covers corresponding to the connecting pieces, a containing groove is formed in each guide cover, and three open grooves are formed in the inner side of each containing groove. In the application process of the detachable double-wheel trolley provided by the utility model, a worker does not need to finely adjust the position of the trolley for many times or invert the whole device, and the frame can be aligned with the trolley, so that the mounting and dismounting processes of the device are simplified, and the operation difficulty and complexity are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to a detachable two-wheel trolley. Background Art

[0002] A two-wheeled trolley is a simple transport tool that usually consists of a platform, two wheels and a handle. The design of this trolley is very simple but powerful, suitable for carrying a variety of light to medium weight items. Usually, this trolley has large wheels, making it easier to move on a flat surface. Two-wheeled trolleys are commonly used in homes, shops, warehouses and offices to carry goods, boxes, luggage and other items.

[0003] After searching, a dump trolley with announcement number CN201343052Y is found, which is composed of a frame, wheels arranged below the frame, a detachable dump hopper arranged above the frame, and a locking device arranged on the frame to lock the dump hopper on the frame. This solution can overlap and stack the hoppers, has the advantages of small stacking space, convenient transportation, simple structure, etc., and can be widely used in construction sites, mines, docks and other places. However, the above technical solution still has the following shortcomings when it is actually used:

[0004] This prior art realizes the connection between the hopper and the frame through a locking device. During specific operation, since the connection part is located at the bottom of the hopper, the hopper acts as an obstruction. The staff needs to adjust the position of the hopper several times during operation so that the connection position of the hopper and the frame is just aligned. In this process, the staff needs to move several pedals at the same time. When the hopper is adjusted to a suitable position, the pedals need to be loosened to achieve a fixed connection between the two. When the connection position of the hopper and the frame is difficult to align, the entire device needs to be inverted so that the locking device on the hopper faces upward. Other prior arts, such as fixing the hopper and the frame with screws, also have the problems of difficulty in aligning the threaded holes of the two, and difficulty for the staff to screw the screws because the threaded holes are located at the bottom of the hopper. Such a design increases the cumbersomeness of the operation, increases the difficulty and workload of the staff, and reduces the efficiency of disassembly and assembly.

[0005] Therefore, it is necessary to design a detachable two-wheeled trolley to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and provides a detachable two-wheeled trolley.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A detachable two-wheeled trolley comprises a trolley, wherein two handles are provided on the side walls of the trolley, a connecting rod 1 and a connecting rod 2 are provided at the bottom of the trolley, two supporting feet are fixed at the bottom of the connecting rod 1, wheels are rotatably sleeved at both ends of the connecting rod 2, a plurality of groups of connecting members are provided on the connecting rod 1 and the connecting rod 2, the connecting members are composed of three slots arranged at equal intervals, a plurality of guide covers corresponding to the connecting members are fixedly connected to the bottom of the trolley, a placement slot is provided inside the guide cover, three slots are provided on the inner side of the placement slot, a card block adapted to the card slot is slidably connected inside each of the slots, and a moving component for driving the card block to move is provided on the trolley.

[0009] As a preferred technical solution of the utility model, the moving component includes a sleeve fixedly connected to the inside of the handle, the inside of the sleeve is sealingly and slidably connected to a push rod, one end of the push rod extends to the outside of the handle, the sleeve is connected to an air outlet pipe and an air inlet pipe, both the air outlet pipe and the air inlet pipe are provided with a one-way valve, the two one-way valves have opposite flow limiting directions, an opening is provided on the air outlet pipe, a valve is provided in the opening, and the one-way valve on the air outlet pipe is located between the valve and the sleeve, the valve passes through the inner top of the handle, an airbag is fixedly connected between the slot and the block, the air outlet pipe is respectively connected to all the airbags, and a spring is also provided between the slot and the block.

[0010] As a preferred technical solution of the utility model, the trolley is also provided with a guide assembly, which includes a double-headed threaded rod, the interior of the connecting rod one is hollow, and the connecting rod one is rotatably sleeved on the double-headed threaded rod, two moving blocks are threadedly sleeved on the double-headed threaded rod, and the two moving blocks are symmetrically arranged with the connecting rod one as the center, two guide rods are fixedly connected to the opposite side walls of the two moving blocks, one end of the guide rod extends to the interior of the connecting rod one, and the guide rod is slidably connected to the connecting rod one.

[0011] As a preferred technical solution of the present utility model, the cross section of the push rod is a T-shaped structure.

[0012] As a preferred technical solution of the utility model, the moving block is in a truncated cone structure, and the minimum radius of the moving block is greater than the radius of the connecting rod 1.

[0013] As a preferred technical solution of the utility model, the longitudinal section of the guide cover is a semicircular ring structure.

[0014] The utility model has the following beneficial effects:

[0015] 1. Simplify the operation process: Through the design of the guide cover and placement slot, the staff can align the frame with the trolley without having to fine-tune the position of the trolley many times or invert the entire device, thereby simplifying the installation and disassembly process of the device, improving the positioning speed of the device, and the fixing operation is simple and fast, reducing the difficulty and complexity of the operation;

[0016] 2. Improve the flexibility of the device: The double-headed threaded rod and moving block design in the guide assembly enable the device to position trolleys of different sizes, improving the flexibility and applicability of the device. When the device is partially damaged and needs to be replaced, the trolley can be combined with frames of other sizes at will, saving the cost of replacing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a detachable two-wheeled trolley proposed by the utility model;

[0018] Figure 2 Schematic diagram of the structure of connecting rod 1 and connecting rod 2;

[0019] Figure 3 It is a schematic diagram of the internal structure of the handle and the guide cover;

[0020] Figure 4 for Figure 3 A magnified view of the structure at A;

[0021] Figure 5 for Figure 3 A magnified view of the structure at B;

[0022] Figure 6 Schematic diagram of the internal structure of connecting rod 1.

[0023] In the figure: 1 trolley, 2 handle, 3 connecting rod 1, 4 connecting rod 2, 5 supporting leg, 6 wheel, 7 guide cover, 8 slot, 9 slot, 10 block, 11 air bag, 12 spring, 13 air outlet pipe, 14 sleeve, 15 one-way valve, 16 push rod, 17 air inlet pipe, 18 valve, 19 double-headed threaded rod, 20 moving block, 21 guide rod, 22 placement slot, 23 opening. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Embodiment 1

[0026] Reference Figure 1-6A detachable two-wheeled trolley comprises a trolley 1, two handles 2 are arranged on the side wall of the trolley 1, a connecting rod 1 3 and a connecting rod 2 4 are arranged at the bottom of the trolley 1, a reinforcing rod is installed between the connecting rod 1 3 and the connecting rod 2 4 to improve the stability of the device structure, the connecting rod 1 3, the connecting rod 2 4 and the reinforcing rod together form a frame, two supporting legs 5 are fixed at the bottom of the connecting rod 1 3, wheels 6 are rotatably sleeved at both ends of the connecting rod 2 4, a plurality of connecting members are arranged on the connecting rod 1 3 and the connecting rod 2 4, and the connecting members are composed of three slots 8 arranged at equal intervals. A plurality of guide covers 7 corresponding to the connecting members are fixedly connected to the bottom of the trolley 1, and the longitudinal section of the guide cover 7 is a semicircular ring structure. A placement groove 22 is provided inside, and the guide cover 7 guides the connecting rod 1 3 and the connecting rod 2 4, so that the trolley 1 can be moved into the placement groove 22. The guide cover 7 increases the contact range of the connecting rod 1 3 and the connecting rod 2 4 and the connection part of the trolley 1, and improves the positioning speed of the device. Three slots 9 are provided on the inner side of the placement groove 22, and a card block 10 adapted to the card slot 8 is slidably connected inside each slot 9. By using the cooperation of the three card slots 8 and the three card blocks 10, the connecting rod 1 3 and the connecting rod 2 4 can be fixed in different directions, ensuring the stability of the connection between the connecting rod 1 3 and the connecting rod 2 4 and the trolley 1. A moving component for driving the card block 10 to move is provided on the trolley 1;

[0027] The moving assembly includes a sleeve 14 fixedly connected to the inside of the handle 2, and a push rod 16 is sealed and slidably connected inside the sleeve 14. One end of the push rod 16 extends to the outside of the handle 2. The cross-section of the push rod 16 is a T-shaped structure to prevent the push rod 16 from being separated from the sleeve 14, thereby ensuring the stability of the overall structure of the device. An air outlet pipe 13 and an air inlet pipe 17 are connected to the sleeve 14. Both the air outlet pipe 13 and the air inlet pipe 17 are provided with a one-way valve 15. The flow limiting directions of the two one-way valves 15 are opposite. Under the action of the push rod 16, the air in the sleeve 14 can only enter the outlet pipe 13. The air in the air outlet pipe 13 is inside the air pipe 13, and the outside air can only enter the sleeve 14 through the air inlet pipe 17. An opening 23 is provided on the air outlet pipe 13, and a valve 18 is provided in the opening 23. The one-way valve 15 on the air outlet pipe 13 is located between the valve 18 and the sleeve 14. The valve 18 passes through the inner top of the handle 2. An air bag 11 is fixedly connected between the slot 9 and the block 10. The air outlet pipe 13 is respectively connected to all the air bags 11. A spring 12 is also provided between the slot 9 and the block 10. The slot 9 and the block 10 are elastically connected by the spring 12.

[0028] Working principle: When the trolley 1 is connected with the connecting rod 1 3 and the connecting rod 2 4, the entire trolley 1 is placed on the frame, and the connection part between the wheel 6 and the connecting rod 2 4 limits the position of the trolley 1 along the axis direction of the connecting rod 2 4. Since the guide cover 7 increases the contact area between the trolley 1 and the frame, the staff can make the connecting rod 1 3 and the connecting rod 2 4 located in the guide cover 7 without making multiple fine adjustments. Then, under the action of the gravity of the trolley 1, the guide cover 7 and the trolley 1 move so that the connecting rod 1 3 and the connecting rod 2 4 are located in the placement groove 22. Then, the staff presses the push rod 16 to allow the air in the sleeve 14 to pass through the outlet pipe. 13 enters into the airbag 11, and the airbag 11 will squeeze the block 10 after being inflated, so that the block 10 moves into the slot 8, so that the frame and the trolley 1 are fixed. Conversely, the staff opens the valve 18, and under the elastic force of the spring 12, the air in the airbag 11 is discharged through the opening 23. At this time, the block 10 can be retracted into the slot 9, that is, the separation of the trolley 1 and the frame is achieved. In this process, the staff does not need to finely adjust the position of the trolley 1 many times to connect the trolley 1 to the frame, and the fixing operation is quick and simple, which simplifies the installation and disassembly process, reduces the difficulty and tediousness of operation, and improves the efficiency of disassembly and assembly.

[0029] Embodiment 2

[0030] Embodiment 2 includes the contents of Embodiment 1, and the technical features disclosed in Embodiment 1 are also applicable to this embodiment. The technical features disclosed in Embodiment 1 will not be described repeatedly in the specification. The implementation method of the detachable two-wheeled trolley will be further described in detail below in conjunction with the accompanying drawings.

[0031] The trolley 1 is also provided with a guide assembly, which includes a double-headed threaded rod 19. The interior of the connecting rod 3 is hollow, and the connecting rod 3 is rotatably sleeved on the double-headed threaded rod 19. Two moving blocks 20 are threadedly sleeved on the double-headed threaded rod 19, and the two moving blocks 20 are symmetrically arranged with the connecting rod 3 as the center. Two guide rods 21 are fixedly connected to the opposite side walls of the two moving blocks 20. One end of the guide rod 21 extends to the interior of the connecting rod 3, and the guide rod 21 is slidably connected to the connecting rod 3. The moving block 20 is a truncated cone structure. The moving block 20 can limit the trolley 1 so that the trolley 1 can be quickly positioned. The truncated cone structure can increase the positioning range of the device for the trolley 1, and the minimum radius of the moving block 20 is greater than the radius of the connecting rod 3, so that the moving block 20 can contact the side wall of the trolley 1.

[0032] Working principle: when the size of the frame becomes larger, the trolley 1 is placed on the frame. At this time, the connection between the connecting rod 24 and the wheel 6 cannot guide the placement of the trolley 1. The double-headed threaded rod 19 is rotated. Under the guidance of the guide rod 21, the two moving blocks 20 move toward each other and the moving distance is the same. Then the moving blocks 20 will drive the trolley 1 to move until the two moving blocks 20 are in contact with the side walls of the trolley 1. At this time, the position of the trolley 1 along the axis of the connecting rod 24 corresponds to the position of the frame. Then, the same fixing process as the first embodiment is performed. When the frame and the trolley 1 are fixed, the two moving blocks 20 also play a fixing and strengthening role for the trolley 1, thereby improving the stability of the overall structure of the device and enabling the device to position trolleys 1 of different sizes, thereby improving the flexibility and practicality of the device. In this way, when the device is partially damaged and needs to be replaced, the trolley 1 and a spare frame larger than the original frame size can be combined at will, saving costs.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A detachable two-wheeled trolley, comprising a trolley (1), characterized in that: The side wall of the trolley (1) is provided with two handles (2), the bottom of the trolley (1) is provided with a connecting rod (3) and a connecting rod (4), the bottom of the connecting rod (3) is fixed with two supporting feet (5), the two ends of the connecting rod (4) are rotatably sleeved with wheels (6), the connecting rod (3) and the connecting rod (4) are provided with a plurality of groups of connecting members, the connecting members are composed of three slots (8) arranged at equal intervals, the bottom of the trolley (1) is fixedly connected with a plurality of guide covers (7) corresponding to the connecting members, the guide cover (7) is provided with a placement groove (22) inside, the inner side of the placement groove (22) is provided with three slots (9), each of the slots (9) is slidably connected with a block (10) adapted to the slot (8), and the trolley (1) is provided with a moving component for driving the block (10) to move.

2. A detachable two-wheeled trolley according to claim 1, characterized in that: The moving assembly comprises a sleeve (14) fixedly connected to the inside of the handle (2), the inside of the sleeve (14) is sealed and slidably connected with a push rod (16), one end of the push rod (16) extends to the outside of the handle (2), the sleeve (14) is connected with an air outlet pipe (13) and an air inlet pipe (17), both of which are provided with a one-way valve (15), the flow limiting directions of the two one-way valves (15) are opposite, and the air outlet pipe (13) is provided with a An opening (23) is provided, a valve (18) is provided in the opening (23), a one-way valve (15) on the air outlet pipe (13) is located between the valve (18) and the sleeve (14), the valve (18) passes through the inner top of the handle (2), an air bag (11) is fixedly connected between the slot (9) and the block (10), the air outlet pipe (13) is respectively connected to all the air bags (11), and a spring (12) is also provided between the slot (9) and the block (10).

3. A detachable two-wheeled trolley according to claim 1, characterized in that: The trolley (1) is also provided with a guide assembly, which includes a double-threaded rod (19). The interior of the connecting rod (3) is hollow, and the connecting rod (3) is rotatably sleeved on the double-threaded rod (19). Two moving blocks (20) are threadedly sleeved on the double-threaded rod (19), and the two moving blocks (20) are symmetrically arranged with the connecting rod (3) as the center. Two guide rods (21) are fixedly connected to the opposite side walls of the two moving blocks (20), one end of the guide rod (21) extends into the interior of the connecting rod (3), and the guide rod (21) is slidably connected to the connecting rod (3).

4. A detachable two-wheeled trolley according to claim 2, characterized in that: The cross section of the push rod (16) is a T-shaped structure.

5. A detachable two-wheeled trolley according to claim 3, characterized in that: The moving block (20) is in a truncated cone structure, and the minimum radius of the moving block (20) is greater than the radius of the connecting rod (3).

6. A detachable two-wheeled trolley according to claim 2, characterized in that: The longitudinal section of the guide cover (7) is a semicircular ring structure.

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