An adjustable wheelbase trolley axle structure

Abstract

The utility model provides a kind of adjustable wheelbase's handcart axle structure, including I-shaped seat, universal wheel one and universal wheel two, wherein: the universal wheel one and universal wheel two are each through shear type telescopic structure and the one side fixed connection of I-shaped seat vertical board, the utility model whole setting, in the process of using, the distance between universal wheel one and universal wheel two can be adjusted, to be able to apply a variety of different sites, greatly improve the flexibility of whole, passability and convenience.

Description

Technical Field

[0001] This utility model relates to the field of handcarts, and in particular to a handcart axle structure with adjustable wheel track. Background Technology

[0002] A handcart is a simple tool primarily propelled or pulled by human power for short-distance transport of goods. It typically consists of basic components such as a frame, wheels, and handles. Due to its simple structure, flexible use, and low cost, it is widely used in various scenarios including daily life, industrial production, and logistics transportation.

[0003] However, existing handcarts are not easy to adjust the wheel track during use, which results in low overall passability and limited applicable spaces.

[0004] Therefore, it is essential to invent a handcart axle structure with adjustable wheel track. Utility Model Content

[0005] To solve the above-mentioned technical problems, the present invention provides a handcart axle structure with adjustable wheel track. The technical solution adopted is as follows: a handcart axle structure with adjustable wheel track includes an I-beam base, a universal wheel one and a universal wheel two, wherein: the universal wheel one and the universal wheel two are each fixedly connected to one side of the vertical plate of the I-beam base through a scissor telescopic structure.

[0006] The I-beam base has a fixing hole through each of its four corners.

[0007] The scissor-type telescopic structure includes a U-shaped plate, a support arm, a support arm, a threaded seat, a threaded seat, a U-shaped plate, a support arm, a support arm, and a lead screw. The tail end of the U-shaped plate is fixedly connected to one side of the vertical plate of the I-beam base. One end of each of the support arms is rotatably connected to the opening of the U-shaped plate. The other end of the support arm is rotatably connected to one side of the threaded seat. The other side of the threaded seat is rotatably connected to one end of the support arm. The other end of the support arm is rotatably connected to the threaded seat. The other side of the threaded seat is rotatably connected to one end of the support arm. The other side of the threaded seat is rotatably connected to one end of the support arm. The other ends of the support arms are rotatably connected to the opening of the U-shaped plate. The U-shaped plate is fixedly connected to the corresponding casters. A lead screw is threadedly installed between the threaded seats and the threaded seat. The two ends of the lead screw protrude from the corresponding threaded seats.

[0008] The tail end of the second U-shaped plate is fixedly installed with a wheel seat, and the first and second universal wheels are fixedly installed at the bottom of the corresponding wheel seats.

[0009] The end of the lead screw protruding from the lead screw seat is coaxially fixed with a drive shaft, the diameter of which is larger than that of the lead screw.

[0010] Weight reduction grooves are provided on each of the support arms 1, 2, 3 and 4.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] The overall design of this utility model allows for adjustment of the distance between the first and second casters during use, making it suitable for various different locations and greatly improving overall flexibility, maneuverability, and convenience. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall front structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall bottom structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the scissor-type telescopic structure of this utility model.

[0016] In the picture:

[0017] 1. I-beam base, 2. Universal wheel 1, 3. U-shaped plate 1, 4. Support arm 1, 5. Support arm 2, 6. Threaded hole base 1, 7. Threaded hole base 2, 8. U-shaped plate 2, 9. Support arm 3, 10. Support arm 4, 11. Lead screw, 12. Drive shaft, 13. Wheel seat, 14. Fixing hole, 15. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0020] The present invention will be further described below with reference to the accompanying drawings: Example

[0021] Reference Figure 1-3 An adjustable wheel track handcart axle structure includes an I-beam base 1, a first universal wheel 2, and a second universal wheel 3, wherein the first universal wheel 2 and the second universal wheel 3 are each fixedly connected to one side of the vertical plate of the I-beam base 1 through a scissor telescopic structure, so as to adjust the distance between the first universal wheel 2 and the second universal wheel 3 through the scissor telescopic structure.

[0022] Specifically, each of the four corners of the I-beam base 1 is provided with a fixing hole 15 so that the I-beam base 1 can be fixedly connected to the bottom surface of the trolley base plate through the fixing hole 15 with fasteners (such as bolts).

[0023] Specifically, the scissor-type telescopic structure includes a U-shaped plate 4, a support arm 5, a support arm 6, a threaded hole seat 7, a threaded hole seat 8, a U-shaped plate 9, a support arm 30, a support arm 41, and a lead screw 12. The tail end of the U-shaped plate 4 is fixedly connected to one side of the vertical plate of the I-beam seat 1. One end of the support arm 5 and the support arm 6 are rotatably connected to the opening of the U-shaped plate 4, respectively. The other end of the support arm 5 is rotatably connected to one side of the threaded hole seat 8. The other side of the threaded hole seat 8 is rotatably connected to one end of the support arm 30. The other end of the support arm 6 is rotatably connected to the threaded hole seat 7. The other end of the threaded hole seat 7... One end of the support arm 11 is rotatably connected to the side of the support arm 10 and the other end of the support arm 11 are rotatably connected to the opening of the U-shaped plate 9. The U-shaped plate 9 is fixedly connected to the corresponding caster wheel 1 2 and caster wheel 2 3. The screw rod 12 is installed between the screw hole seat 1 7 and the screw hole seat 2 8 through thread engagement. The two ends of the screw rod 12 protrude from the corresponding screw hole seat 1 7 and the screw hole seat 2 8, so that by rotating the screw rod 12 in both directions, the screw hole seat 1 7 and the screw hole seat 2 8 can be forced to move closer or further away from each other along the screw rod 12, thereby achieving the effect of adjusting the distance between the caster wheel 1 2 and the caster wheel 2 3.

[0024] Specifically, the upper surface of the I-beam seat 1 is higher than the upper surfaces of the U-shaped plate 1, support arm 1, support arm 2, threaded hole seat 1, threaded hole seat 2, U-shaped plate 2, support arm 3, support arm 4, and threaded rod 12, so that there will be no contact friction between the scissor telescopic structure and the bottom plate of the handcart during the telescopic process.

[0025] Specifically, a wheel seat 14 is fixedly installed at the tail end of the U-shaped plate 2 9, and universal wheels 1 2 and 2 3 are fixedly installed at the bottom of the corresponding wheel seat 14 to ensure the stability between the universal wheels 1 2 and 2 3 and the U-shaped plate 2 9.

[0026] Specifically, a drive shaft 13 is coaxially fixedly installed on one end of the lead screw 12 that protrudes from the lead screw hole seat 8. The diameter of the drive shaft 13 is larger than the diameter of the lead screw 12. With the drive shaft 13, the lead screw 12 can be manually driven to rotate, or it can be electrically driven, such as by a motor (the drive shaft 13 is fixedly connected to the output end of the motor, and the motor is fixedly installed on the bottom surface of the handcart base).

[0027] Specifically, support arms 1 (5), 2 (6), 3 (10), and 4 (11) are each provided with weight-reducing grooves to reduce the overall weight.

[0028] In this embodiment, when in use, two sets of adjustable wheel track handcart axle structures are selected and evenly distributed in parallel on the bottom surface of the cart base plate. The I-beam base 1 is fixedly connected to the bottom surface of the cart base plate through the fixing hole 15 and fasteners (such as bolts).

[0029] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. An adjustable wheelbase handcart axle structure, characterized in that: It includes an I-beam base (1), a first universal wheel (2) and a second universal wheel (3), wherein: the first universal wheel (2) and the second universal wheel (3) are fixedly connected to one side of the vertical plate of the I-beam base (1) through a scissor telescopic structure.

2. The adjustable wheelbase handcart axle structure as described in claim 1, characterized in that: The I-beam base (1) has a fixing hole (15) through each of its four corners.

3. The adjustable wheelbase handcart axle structure as described in claim 2, characterized in that: The scissor-type telescopic structure includes a U-shaped plate (4), a support arm (5), a support arm (6), a wire hole seat (7), a wire hole seat (8), a U-shaped plate (9), a support arm (10), a support arm (11), and a lead screw (12). The tail end of the U-shaped plate (4) is fixedly connected to one side of the vertical plate of the I-beam seat (1). One end of the support arm (5) and the support arm (6) are rotatably connected to the opening of the U-shaped plate (4). The other end of the support arm (5) is rotatably connected to one side of the wire hole seat (8). The other side of the wire hole seat (8) is rotatably connected to one end of the support arm (10). Then, the other end of the second support arm (6) is rotatably connected to the first wire hole seat (7), the other side of the first wire hole seat (7) is rotatably connected to one end of the fourth support arm (11), the other ends of the third support arm (10) and the fourth support arm (11) are rotatably connected to the opening of the second U-shaped plate (9), the second U-shaped plate (9) is fixedly connected to the first universal wheel (2) and the second universal wheel (3), and a screw rod (12) is installed between the first wire hole seat (7) and the second wire hole seat (8) by thread engagement, and the two ends of the screw rod (12) protrude from the first wire hole seat (7) and the second wire hole seat (8) respectively.

4. The adjustable wheelbase handcart axle structure as described in claim 3, characterized in that: The tail end of the U-shaped plate 2 (9) is fixedly installed with a wheel seat (14), and the universal wheel 1 (2) and universal wheel 2 (3) are fixedly installed at the bottom of the corresponding wheel seat (14).

5. The adjustable wheelbase handcart axle structure as described in claim 3, characterized in that: The lead screw (12) is coaxially fixed to one end protruding from the lead hole seat (8) with a drive shaft (13), the diameter of which is larger than that of the lead screw (12).

6. The adjustable wheelbase handcart axle structure as described in claim 3, characterized in that: Weight reduction grooves are provided on each of the support arms 1 (5), 2 (6), 3 (10) and 4 (11).

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