CN212921613U

CN212921613U - Obstacle-stridable folding small handcart

Info

Publication number: CN212921613U
Application number: CN202022073050.6U
Authority: CN
Inventors: 王振东
Original assignee: Nanjing Vocational University of Industry Technology NUIT
Current assignee: Nanjing Vocational University of Industry Technology NUIT
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-04-09
Anticipated expiration: 2030-09-21

Abstract

The utility model discloses a can stride folding small handcart of obstacle relates to the transportation field, including carrier, hand frame, front wheel and rear wheel, hand frame is articulated with the carrier, two shaft of the bottom fixedly connected with of carrier rotate on the shaft of front side and connect 2 front wheels, the front wheel comprises regular triangle's front wheel carrier and auxiliary, all rotates on the three angles of front wheel carrier to be connected with the auxiliary, rotates on the shaft of rear side to be connected with 2 rear wheels, the main part of rear wheel is triangle-shaped's rear wheel carrier, all rotates on the three angles of rear wheel carrier to be connected with the universal wheel. The front wheel and the rear wheel are designed into a triangular structure consisting of three small wheels, and the front wheel and the rear wheel can rotate around the wheel shaft integrally, and the auxiliary wheel and the universal wheel can rotate freely, so that the front wheel and the rear wheel can be turned over when the trolley encounters a short obstacle, the obstacle can be conveniently spanned, the object carrying capacity is increased by the foldable telescopic design, and the occupied space when the trolley is not used is reduced.

Description

Obstacle-stridable folding small handcart

Technical Field

The utility model relates to a transportation field, concretely relates to can stride folding small handcart of obstacle.

Background

The small handcart is in the life, short distance transport means commonly used, can meet some short doorsills or some barriers sometimes in the transportation, the difficult leap of common gyro wheel when meetting these barriers, need artificial pushing down hand-held rack, stick up the front wheel, later just can cross the barrier, the in-process goods of stick up also drops very easily, it is inconvenient to use, influence the conveying efficiency, the amount of labour has been increased, and the small handcart structure commonly used is fixed, occupation space is great when not used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can stride folding small handcart of obstacle to solve the problem of mentioning in the above-mentioned background art.

The foldable trolley capable of crossing obstacles comprises a carrier, two wheel shafts, front wheels and rear wheels, wherein the carrier is hinged with the carrier, the bottom of the carrier is fixedly connected with the two wheel shafts through a supporting beam, the wheel shaft at the front side is rotatably connected with the 2 front wheels, the front wheels consist of regular triangular front wheel frames and auxiliary wheels, the three corners of the front wheel frames are respectively and rotatably connected with the auxiliary wheels, the wheel shaft at the rear side is rotatably connected with the 2 rear wheels, the main bodies of the rear wheels are triangular rear wheel frames, and the three corners of the rear wheel frames are respectively and rotatably connected with universal wheels.

Preferably, the article carrier consists of a front frame and a rear frame, a plurality of positioning holes are formed in two sides of the front frame, bolts are arranged on two sides of the front end of the rear frame, the front frame and the rear frame are connected in a sliding mode and locked through the positioning holes and the bolts, and 2 hinge grooves are formed in the rear frame.

Preferably, the handrail frame comprises mount and expansion bracket, be equipped with the hinge ear on the mount, the hinge ear is articulated through hinge rod and hinge groove, hinge ear front side is equipped with location shelves pole, location shelves pole passes through nut and hinge groove locking, be equipped with a plurality of locating holes on the mount, the both sides of mount upper end are equipped with the bolt, expansion bracket and sliding connection mount just lock through locating hole and bolt.

Preferably, the auxiliary wheel is made of rubber.

Preferably, the universal wheel is made of rubber.

The utility model has the advantages that: the front wheel and the rear wheel are designed into a triangular structure consisting of three small wheels, and the front wheel and the rear wheel can rotate around the wheel shaft integrally, and the auxiliary wheel and the universal wheel can rotate freely, so that the front wheel and the rear wheel can be turned over when the trolley encounters a short obstacle, the obstacle can be conveniently spanned, the object carrying capacity is increased by the foldable telescopic design, and the occupied space when the trolley is not used is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the handrail.

Fig. 3 is a partially disassembled schematic view.

Fig. 4 is a schematic structural view of the rear wheel.

Fig. 5 is a schematic structural view of the front wheel.

In the figure: the device comprises a carrier 1, a front frame 1a, a rear frame 1b, a hand-held frame 2a, a fixed frame 2b, a telescopic frame 3, a hinge rod 4, a positioning hole 5, a bolt 6, a hinge lug 7, a hinge groove 8, a support beam 9, a wheel shaft 10, a front wheel 101, a front wheel frame 102, an auxiliary wheel 11, a rear wheel 111, a rear wheel frame 112, a universal wheel and a positioning stop lever 12.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1 to 5, a foldable trolley capable of crossing obstacles comprises a carrier 1, a hand frame 2, front wheels 10 and rear wheels 11, wherein the hand frame 2 is hinged to the carrier 1, the bottom of the carrier 1 is fixedly connected with two wheel shafts 9 through a support beam 8, the wheel shaft 9 at the front side is rotatably connected with 2 front wheels 10, each front wheel 10 is composed of a front wheel frame 101 and auxiliary wheels 102 in a regular triangle shape, the auxiliary wheels 102 are rotatably connected to three corners of the front wheel frame 101, the wheel shaft 9 at the rear side is rotatably connected with 2 rear wheels 11, the main body of each rear wheel 11 is a rear wheel frame 111 in a triangle shape, and the universal wheels 112 are rotatably connected to three corners of the rear wheel frame 111. The triangular rear wheel frame 101 and the triangular front wheel frame 111 can cross an obstacle by turning when encountering the obstacle, so that the transportation is convenient, and the steering can be realized by the universal wheels 112 on the rear wheels 11.

In this embodiment, the article carrier 1 is composed of a front frame 1a and a rear frame 1b, a plurality of positioning holes 4 are disposed on two sides of the front frame 1a, bolts 5 are disposed on two sides of the front end of the rear frame 1b, the front frame 1a and the rear frame 1b are slidably connected and locked by the positioning holes 4 and the

bolts

5, and 2 hinge slots 7 are disposed on the rear frame 1 b. The luggage carrier 1 is designed to be a telescopic structure, so that materials with different volumes can be conveniently transported, and the space can be saved when the luggage carrier is not used.

In this embodiment, the handrail frame 2 is composed of a fixed frame 2a and an expansion bracket 2b, a hinge lug 6 is arranged on the fixed frame 2a, the hinge lug 6 is hinged to a hinge groove 7 through a hinge rod 3, a positioning stop rod 12 is arranged on the front side of the hinge lug 6, the positioning stop rod 12 is locked to the hinge groove 7 through a nut, a plurality of positioning holes 4 are formed in the fixed frame 2a, bolts 5 are arranged on two sides of the upper end of the fixed frame 2a, and the expansion bracket 2b is locked to the fixed frame 2a in a sliding connection mode through the positioning holes 4 and the bolts 5. The hand frame 2 is designed to be a telescopic and rotary folding structure, so that the occupied space when not in use can be saved.

In this embodiment, the sub-wheel 102 is made of rubber. In this embodiment, the universal wheel 112 is made of rubber. The auxiliary wheel and the universal wheel are made of rubber materials to play a role in buffering and absorbing vibration.

The working process and the principle thereof are as follows: when the telescopic cargo rack is used, the lengths of the cargo rack 1 and the hand racks 2 are adjusted according to the size of the cargo, the telescopic lengths are fixed through the positioning holes 4 and the bolts 5, and then the cargo is placed on the cargo rack 1 for transportation.

During normal transportation of the cart, the two auxiliary wheels 102 of the front wheels 10 are in contact with the ground, and the two universal wheels 112 of the rear wheels 11 are in contact with the ground. When the small handcart encounters a short obstacle, the auxiliary wheel 102, which is firstly contacted with the obstacle, of the front wheel 10 is subjected to a backward force of the obstacle, so that the front wheel frame 101 rotates anticlockwise by 120 degrees, the auxiliary wheel 102, which is not originally contacted with the ground, is turned to be contacted with the ground, the obstacle is positioned between the included angles of the two auxiliary wheels 102 in the turning process of the front wheel 10, then the front wheel frame 101 is continuously pushed, and similarly, the front wheel frame 101 is turned by 120 degrees again, and the obstacle crossing is realized. The ride-through principle of the rear wheel 11 is the same as that of the front wheel 10.

Because the rear wheel frame 111 of the rear wheel 11 is rotatably connected with the universal wheel 112, the rear wheel 11 can realize the steering effect during the transportation process

When the small handcart is not used, the positioning stop rod 12 can be detached, and the handrail frame is folded on the carrier frame 1 by the hinge rod 3 rotating downwards around the hinge groove 7, so that the occupied space is reduced.

Based on the above: the front wheel 11 and the rear wheel 11 are designed into a triangular structure consisting of three small wheels, the front wheel 11 and the rear wheel 11 can rotate around the wheel shaft 9 integrally, and the auxiliary wheel 102 and the universal wheel 112 can rotate freely, so that the front wheel 10 and the rear wheel 11 can be turned over when the trolley encounters a short obstacle, the obstacle can be conveniently crossed, the carrying capacity is increased due to the foldable telescopic design, and the occupied space when the trolley is not used is reduced.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The utility model provides a can stride folding small handcart of obstacle which characterized in that: the novel luggage carrier comprises a luggage carrier (1), a hand rack (2), front wheels (10) and rear wheels (11), wherein the hand rack (2) is hinged to the luggage carrier (1), the bottom of the luggage carrier (1) is fixedly connected with two wheel shafts (9) through a supporting beam (8), the wheel shaft (9) on the front side is rotatably connected with the 2 front wheels (10), each front wheel (10) consists of a front wheel carrier (101) and auxiliary wheels (102) which are in a regular triangle shape, the auxiliary wheels (102) are rotatably connected to three corners of the front wheel carrier (101), the wheel shaft (9) on the rear side is rotatably connected with the 2 rear wheels (11), the main body of each rear wheel (11) is a triangular rear wheel carrier (111), and the three corners of the rear wheel carrier (111) are rotatably connected with universal wheels (112).

2. A foldable trolley according to claim 1, wherein: the luggage carrier is characterized in that the luggage carrier (1) is composed of a front frame (1a) and a rear frame (1b), a plurality of positioning holes (4) are formed in two sides of the front frame (1a), bolts (5) are arranged on two sides of the front end of the rear frame (1b), the front frame (1a) is connected with the rear frame (1b) in a sliding mode and locked through the positioning holes (4) and the bolts (5), and 2 hinge grooves (7) are formed in the rear frame (1 b).

3. A foldable trolley according to claim 2, wherein: hand frame (2) comprise mount (2a) and expansion bracket (2b), be equipped with hinge ear (6) on mount (2a), hinge ear (6) are articulated through hinge rod (3) and hinge groove (7), hinge ear (6) front side is equipped with location shelves pole (12), location shelves pole (12) are locked through nut and hinge groove (7), be equipped with a plurality of locating holes (4) on mount (2a), both sides of mount (2a) upper end are equipped with bolt (5), expansion bracket (2b) and sliding connection mount (2a) and through locating hole (4) and bolt (5) locking.

4. A foldable trolley according to claim 1, wherein: the auxiliary wheel (102) is made of rubber.

5. A foldable trolley according to claim 1, wherein: the universal wheel (112) is made of rubber.