Power trolley with adjustable wheel tread

Abstract

The utility model discloses a power trolley with an adjustable wheel track. The power trolley comprises a cargo carrying hopper, supporting columns, moving wheels, a push-pull handle and a distance adjusting module. The distance adjusting module comprises a cylinder, one side of the cylinder is fixedly connected with a connecting plate, a center shaft at one end of a worm penetrates through and is movably connected with the connecting plate, the end portion of the center shaft at one end of the worm is fixedly connected with the center of a rotary knob, the worm is meshed with a worm gear, and a center shaft of the worm gear penetrates through and is movably connected with the connecting plate. And the end part of a central shaft of the worm gear is fixedly connected with the center of a gear. By means of the distance adjusting module, the wheel distance between a set of moving wheels can be increased when the road surface is relatively wide and flat, and the wheel distance between the set of moving wheels can be decreased when the road surface is relatively narrow and uneven, so that an operator can conveniently hold the push-pull handle by hand to transport goods.

Description

Technical Field

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

[0002] A handcart is a transport vehicle that is pushed or pulled by human power. Handcarts are widely used in production and daily life because they are inexpensive, easy to maintain, convenient to operate, and lightweight. They can work in places where motor vehicles are inconvenient to use and are very convenient for transporting lighter items over short distances. Handcarts are widely used and can be found in fields and construction sites.

[0003] However, the wheelbarrows currently in use generally have non-adjustable wheelbase, which limits their use and makes it difficult to pass through many poor or narrow roads, causing trouble for the operator.

[0004] Therefore, it is necessary to provide a power handcart with adjustable wheelbase to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a power handcart with adjustable wheel track.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustable wheel track power handcart includes a cargo bin, support columns, casters, push-pull handles, and an adjustable wheel track module;

[0008] The adjustable distance module includes a cylinder with a connecting plate fixedly connected to one side. One end of a worm gear passes through and is movably connected to the connecting plate. The end of the central shaft of the worm gear is fixedly connected to the center of a knob. The worm gear meshes with a worm wheel. The central shaft of the worm wheel passes through and is movably connected to the connecting plate. The end of the central shaft of the worm wheel is fixedly connected to the center of a gear. The gear meshes with an arc-shaped rack.

[0009] The arc-shaped rack is fixedly connected to the annular plate, and the annular plate is movably connected to the groove provided on the outer wall of the cylinder. The annular plate is respectively connected to a set of arc-shaped rocker arms by pins. One end of each set of arc-shaped rocker arms is respectively connected to the corresponding support column by pins. The upper side of each set of support columns is respectively fixedly connected to a corresponding ball bearing slider. Each set of ball bearing sliders is provided with a corresponding linear guide rail.

[0010] Preferably, a set of linear guide rails are fixedly connected to the lower side of the cargo hopper.

[0011] Preferably, the cylinder is fixedly connected to the lower side of the cargo hopper.

[0012] Preferably, the push-pull handle is fixedly connected to one side of the cargo bin.

[0013] Preferably, the lower side of a group of the support columns is fixedly connected to the corresponding movable wheels.

[0014] Compared with related technologies, the beneficial effects of this utility model are:

[0015] 1. The adjustable distance module can increase the wheel spacing between a set of moving wheels when the road surface is relatively wide and flat, and decrease the wheel spacing when the road conditions are relatively narrow and uneven, making it easier for the operator to hold the push and pull handle to transport goods.

[0016] 2. This device can adjust the wheel spacing between a set of moving wheels according to actual usage needs, making it more practical. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0019] Figure 3 This is a three-dimensional schematic diagram of the present invention.

[0020] Figure 4 This is a schematic diagram of the connection structure of some parts of this utility model.

[0021] Figure 5 This is a schematic diagram of the connection structure of some parts of this utility model.

[0022] In the picture:

[0023] 1. Cargo bucket;

[0024] 2. Support columns;

[0025] 3. Casters;

[0026] 4. Push-pull handle;

[0027] 5: Adjustment module, 51. Knob, 52. Worm gear, 53. Worm wheel, 54. Linear guide rail, 55. Ball bearing slider, 56. Cylinder, 57. Arc rack, 58. Gear, 59. Connecting plate, 510. Ring plate, 511. Arc swing arm. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] An adjustable wheel track power handcart includes a cargo bin 1, a support column 2, moving wheels 3, a push-pull handle 4, and an adjustment module 5;

[0030] The adjustable distance module 5 includes a cylinder 56, with a connecting plate 59 fixedly connected to one side of the cylinder 56. One end of the worm gear 52 has its central shaft passing through and movably connected to the connecting plate 59. The end of the central shaft of the worm gear 52 is fixedly connected to the center of the knob 51. The worm gear 52 meshes with a worm wheel 53. The central shaft of the worm wheel 53 passes through and movably connected to the connecting plate 59. The end of the central shaft of the worm wheel 53 is fixedly connected to the center of a gear 58. The gear 58 meshes with an arc-shaped rack 57.

[0031] The arc-shaped rack 57 is fixedly connected to the annular plate 510. The annular plate 510 is movably connected to the groove provided on the outer wall of the cylinder 56. The annular plate 510 is respectively connected to a set of arc-shaped rocker arms 511 by pins. One end of each set of arc-shaped rocker arms 511 is respectively connected to the corresponding support column 2 by pins. The upper side of each set of support columns 2 is respectively fixedly connected to the corresponding ball bearing slider 55. Each set of ball bearing sliders 55 is provided with a corresponding linear guide rail 54.

[0032] A set of linear guide rails 54 are fixedly connected to the lower side of the cargo hopper 1.

[0033] The cylinder 56 is fixedly connected to the lower side of the cargo hopper 1.

[0034] The push-pull handle 4 is fixedly connected to one side of the cargo bin 1.

[0035] The lower side of a set of support columns 2 is fixedly connected to the corresponding movable wheels 3.

[0036] Working principle: When using this device, materials are loaded into the cargo hopper 1, and the operator moves it by holding the push-pull handle 4. A set of moving wheels 3 rotates, driving the device to move. The wheel spacing between the set of moving wheels 3 is adjusted according to the actual road conditions. When the road surface is relatively wide and flat, the knob 51 is turned, which drives the worm 52 to rotate. The worm 52 meshes with the worm wheel 53 to rotate, and the worm wheel 53 drives the gear 58 to mesh with the arc rack 57 to rotate. The arc gear 57 drives a set of arc swing rods 511 to swing through the annular plate 510. The set of arc swing rods 511 drives the ball sliders 55 to slide along the linear guide rail 54 through the support column 2, causing the set of support columns 2 to drive the moving wheels 3 to move away from each other, thus increasing the wheel spacing between the set of moving wheels 3. The operator then holds the push-pull handle 4 to transport goods.

[0037] Conversely, when the road conditions are relatively narrow and uneven, the knob 51 is turned in the opposite direction. Then, the movement direction of some parts of this device is opposite to the above movement direction, so it will not be described again. This reduces the wheel distance between a set of moving wheels 3, and the operator holds the push-pull handle 4 to transport goods.

[0038] Beneficial effects: The adjustable distance module 5 can increase the wheel spacing between a set of moving wheels 3 when the road surface is relatively wide and flat, and decrease the wheel spacing between a set of moving wheels 3 when the road conditions are relatively narrow and uneven, making it easier for the operator to hold the push and pull handle 4 to transport goods.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A power cart with adjustable wheel track, characterized in that The wheelbase-adjustable power trolley comprises: A cargo bucket (1), a support column (2), a moving wheel (3), a push-pull handle (4), and an adjustment module (5); The adjustment module (5) comprises a cylinder (56), one side of the cylinder (56) is fixedly connected with a connecting plate (59), one end of a worm (52) is movably connected with the connecting plate (59) through a central shaft, the end of the central shaft of the worm (52) is fixedly connected with the center of a knob (51), the worm (52) is engaged with a worm wheel (53), the central shaft of the worm wheel (53) is movably connected with the connecting plate (59), the end of the central shaft of the worm wheel (53) is fixedly connected with the center of a gear (58), and the gear (58) is engaged with an arc-shaped rack (57). The arc-shaped rack (57) is fixedly connected with a ring-shaped plate (510), the ring-shaped plate (510) is movably connected with a groove provided on the outer wall of the cylinder (56), the ring-shaped plate (510) is hingedly connected with a group of arc-shaped swing levers (511) through a pin shaft, one end of each of the arc-shaped swing levers (511) is hingedly connected with a corresponding support column (2) through a pin shaft, the upper side of each of the support columns (2) is fixedly connected with a corresponding ball slide (55), and each of the ball slides (55) is provided with a corresponding linear guide rail (54) inside.

2. The trackable powered cart of claim 1, wherein, Each of the linear guide rails (54) is fixedly connected with the lower side of the cargo bucket (1).

3. The trackable powered cart of claim 1, wherein, The cylinder (56) is fixedly connected with the lower side of the cargo bucket (1).

4. The trackable power cart of claim 1, wherein, One side of the cargo bucket (1) is fixedly connected with the push-pull handle (4).

5. The trackable powered cart of claim 1, wherein, The lower side of each of the support columns (2) is fixedly connected with a corresponding moving wheel (3).

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