CN217515177U

CN217515177U - Anti-toppling trolley

Info

Publication number: CN217515177U
Application number: CN202221508987.4U
Authority: CN
Inventors: 郑裕忠; 郑东山; 李修明
Original assignee: Jiangshan South Cement Co ltd
Current assignee: Jiangshan South Cement Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-09-30
Anticipated expiration: 2032-06-15

Abstract

The utility model relates to an anti-toppling handcart, which relates to the technical field of anti-toppling trolleys, overcomes the defects of poor stability and easy toppling of the existing handcart and comprises a bottom frame, wherein the bottom frame comprises two parallel straight beams, the straight beams are formed by connecting cross beams vertical to the straight beams, a bracket is arranged at the upper front end of the bottom frame, the bracket supports a backrest, a handle is arranged above the connecting part of the backrest and the bracket, wheels are arranged at the two ends of the straight beams, the connecting part of the backrest and the bottom frame is arranged between the two wheels of the straight beams and close to the inner side of the front wheel, the included angle alpha of the backrest arranged on the bottom frame is 50-85 degrees, and the gravity center of loaded goods falls into the connecting lines of the four wheels; the utility model discloses the product, under normal people's extreme power, no matter how many objects of dolly dress, its focus also ensures can not empty in the line of four wheels.

Description

Anti-toppling trolley

Technical Field

The utility model relates to a prevent empting handcart technical field.

Background

In normal production, many enterprises generally use self-made manual transportation carts to transport semi-finished products between processes, and when fully loaded, the carts are loaded with 800-. As the trolley is carried by manpower, the self-made trolley is mainly made of thin square tubes of 60 multiplied by 40 multiplied by 2.5mm, the self weight of the trolley is reduced, the labor intensity of workers is reduced, the weight of the whole trolley is generally not more than 40 kg, and the specific structure is shown in the attached drawing 1. However, the safety of the vehicle is not considered, the trolley can be turned over by only 21 kg of f under an empty loading state, and when a small amount of the trolley is loaded as in the state shown in the attached drawing 2, according to stress analysis, in the state shown in the attached drawing 2 of the trolley, workers can easily tip in the human traction direction by only 26.5 kg of f, so that personal casualty accidents are easily caused; although the trolley cannot tip over when the trolley is fully loaded, the trolley frame can generate larger distortion deformation, and plates are easy to slide and collapse when workers pull the trolley forcefully.

The defects of the trolley are obvious:

1. the self-made trolley has no standard, the material consumption is too thin, the weight of the whole trolley is only 38 kg, the gravity center is high, the stability is poor, the structural rigidity is insufficient, and the trolley frame can generate large distortion when the trolley is fully loaded;

2. the frame backrest of the handcart is positioned at the outer side of a rear wheel (shown in figure 1), the frame backrest is inclined backwards by about 10 degrees, the gravity center of the backrest deviates to the outer side of a supporting point, and the eccentricity is easily caused when a small amount of goods are loaded;

3. the length of the safety support bar is too short, when the support bar is grounded, the trolley overturns 38.73 degrees, the center of gravity of the goods is beyond the support point, and the trolley completely overturns.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at: an anti-tipping handcart is provided to solve the above technical problems in the prior art.

According to the above-mentioned purpose, the basic technical scheme of the utility model is: the utility model provides an anti-overturning trolley, includes the chassis, the chassis include two parallel straight beams, straight beam form through connecting rather than vertically crossbeam, the chassis on the front end be equipped with the support, the support supporting the back, back and support junction top be equipped with the hand (hold), straight beam both ends be equipped with the wheel, the junction of back and chassis establish the inboard near the front wheel between two wheels of straight beam.

Furthermore, the included angle alpha of the backrest arranged on the underframe is 50-85 degrees, and the center of gravity of the loaded goods falls within the connecting line of the four wheels.

Furthermore, two sides of the underframe are provided with anti-rollover support frames, when the support frames are grounded, the side starting angle beta of the vehicle body is 10-20 degrees, and the included angle between the connecting line of the gravity center of the vehicle and the fulcrum and the ground is smaller than 90 degrees.

Furthermore, the underframe is made of heavy channel steel.

Furthermore, the backrest is made of a light and thin square tube.

Furthermore, when the acting force on the handle is greater than 85 kilograms force, the empty bicycle can be toppled backwards.

Furthermore, the distance between the cross beam of the connecting straight beam at the joint of the backrest and the underframe and the wheels is 500-800 mm.

Compared with the prior art, the utility model discloses an advantage and beneficial effect:

1. the utility model has the advantages that under the limit force of normal people, no matter how many objects are loaded on the trolley, the trolley rollover accident can not occur;

2. the utility model adopts the bottom frame made of channel steel, which is heavy and has low gravity center, when the inclination limit is reached, the gravity center is also in the connecting line of four wheels, thus ensuring no toppling;

3. the utility model discloses the product adopts back and support to rely on as the goods, the back setting inboard at the front wheel, ensure that the goods is few, the focus is not emptyd in the four-wheel line.

Drawings

FIG. 1 is a schematic structural view of a prior art cart;

FIG. 2 is a schematic forward leaning configuration of a prior art hand truck;

FIG. 3 is a schematic view of the front view principle structure of the product of the present invention;

FIG. 4 is a schematic top view of the product of the present invention;

FIG. 5 is a left side view schematic diagram of the product of the present invention;

FIG. 6 is a schematic structural view of the product of the present invention in a lateral inclination limit state;

FIG. 7 is a schematic view of the structure of the product of the present invention when calculating the stress state;

in the figure:

1. a chassis; 2. a wheel; 3. a backrest; 4. a handle; 5. a support; 6. a cross beam; 7. a straight beam 7; 8. a support frame.

Detailed Description

With reference to fig. 3-7, the structure of the anti-toppling cart of the present invention comprises a bottom frame 1, wherein the bottom frame 1 comprises two parallel straight beams 7, the straight beams 7 are formed by connecting cross beams 6 perpendicular to the straight beams, a support 5 is disposed at the upper front end of the bottom frame 1, the support 5 supports a backrest 3, a handle 4 is disposed above the connection between the backrest 3 and the support 5, wheels 2 are disposed at the two ends of the straight beams, and the connection between the backrest 3 and the bottom frame 1 is disposed at the inner side of the straight beams 7, which is close to the front wheels 2, between the two wheels 2; the included angle alpha of the backrest 3 arranged on the underframe 1 is 50-85 degrees, and the gravity center of the loaded goods falls within the connecting line of the four wheels. According to stress analysis, the weight of the underframe 1 has the greatest effect on preventing the trolley from tipping, so that the underframe of the trolley is made of # 10 steel channels, the moment generated by the underframe is 607N m, the moment generated by the underframe of the old trolley is only 207N m, and the pivot points of the front wheels are calculated. While also increasing structural rigidity.

The frame backrest does not bear the weight of cargos basically, so that the frame backrest is made of square tubes of 60 mm multiplied by 40 mm multiplied by 2.5 mm. The connecting point of the backrest and the underframe is designed at the 600mm position of the inner side of the front wheel, the two sides of the underframe 1 are provided with the anti-rollover support frames 8, when the pivot points touch the ground, the side starting angle beta of the vehicle body is 10-20 degrees, and the included angle between the connecting line of the gravity center of the vehicle and the pivot points and the ground is less than 90 degrees, so that the gravity center of the loaded goods is ensured to fall within the connecting line of the four wheels.

According to the measurement of fig. 7, the minimum external force F causing the unloaded trolley to topple over is (15X357+8X160+85X1015)/1090 is 85kg, and the pulling force for the trolley to topple backwards is increased along with the increase of the weight of the cargos, so that the stability and the reliability of the loaded trolley are ensured.

The above is to the anti-toppling handcart provided by the utility model is introduced, and the application of specific preferred embodiment in this introduction is right the principle and the implementation mode of the utility model are elucidated, and these embodiments are only used for helping to understand the utility model discloses a principle and core thought should point out, to the ordinary technical personnel in this field, under the prerequisite that does not deviate from the design thought of the utility model, the embodiment in the above-mentioned embodiment can further make up or replace, can be right the utility model discloses carry out a plurality of improvements and embellishments, these improvements and embellishments also fall into the scope of protection of the utility model claims.

Claims

1. An anti-tip cart, comprising a chassis (1), characterized in that: chassis (1) include straight roof beam (7) of two parallels, straight roof beam (7) form through connecting rather than vertically crossbeam (6), chassis (1) go up the front end and be equipped with support (5), support (5) support back (3), back (3) and support (5) be connected the department top and be equipped with hand (hold) 4, straight roof beam (7) both ends be equipped with wheel (2), the junction of back (3) and chassis (1) establish the inboard that is close to front wheel (2) between two wheel (2) of straight roof beam (7).

2. The anti-tip cart according to claim 1, wherein: the included angle alpha of the backrest (3) arranged on the underframe (1) is 50-85 degrees, and the center of gravity of loaded goods falls within the connecting line of the four wheels.

3. The anti-tip cart according to claim 1, wherein: the side-turning prevention support frames (8) are arranged on two sides of the underframe (1), when the support frames (8) are grounded, the side starting angle beta of the car body is 10-20 degrees, and at the moment, the included angle between the connecting line of the gravity center of the car and the fulcrum and the ground is less than 90 degrees.

4. The anti-tip cart according to claim 1, wherein: the underframe (1) is made of thick channel steel.

5. The anti-tip cart according to claim 1, wherein: the backrest (3), the handle (4) and the bracket (5) are made of light and thin square tubes.

6. The anti-tip cart according to claim 1, wherein: when the acting force on the handle (4) is more than 85 kilograms force, the empty bicycle can be toppled backwards.

7. The anti-tip cart according to claim 1, wherein: the distance between the cross beam (6) of the connecting straight beam (7) at the joint of the backrest (3) and the underframe (1) and the wheels (2) is 500-800 mm.