CN212332806U

CN212332806U - Crawler-type handcart

Info

Publication number: CN212332806U
Application number: CN202021260842.8U
Authority: CN
Inventors: 张占平
Original assignee: Chongqing Jinbaomiaoji Innovation Technology Co ltd
Current assignee: Chongqing Jinbaomiaoji Innovation Technology Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-01-12
Anticipated expiration: 2030-06-23

Abstract

The crawler-type trolley comprises a trolley body, a handrail, a controller, a driving mechanism and a crawler-type rolling device, wherein the crawler-type rolling device is a set of inverted triangular crawler-type rolling device longitudinally arranged in the middle right below the trolley body, and mainly comprises an inverted isosceles triangular crawler frame, a bottom wheel rotatably arranged at the vertex angle of the inverted isosceles triangular crawler frame, two front first oblique wheels and two rear first oblique wheels which are as large as each other and are respectively rotatably arranged at two bottom angles of the inverted isosceles triangular crawler frame, two front second oblique wheels and two rear second oblique wheels which are as large as each other and are respectively rotatably arranged between the front first oblique wheels and the rear first oblique wheels and the bottom wheel, two idler wheels which are as large as each other and are rotatably arranged between the front first oblique wheels and the rear first oblique wheels, and a circle of crawler belt sleeved on the bottom wheels, the oblique wheels and the idler wheels. The crawler-type trolley has strong turning and passing capability on most of curved mountain roads.

Description

Crawler-type handcart

Technical Field

The invention relates to a trolley, in particular to a crawler-type trolley with a flexible turning device.

Background

"chinese patent publication No. CN209521707U, the publication date is 22 months 10 in 2019, entitled" crawler-type handcart ", and discloses a crawler-type handcart, which is applied in the field of trolleys, and the key points of the technical scheme are as follows: the wheel assembly comprises a plurality of bottom wheels, a first oblique wheel and a second oblique wheel, wherein the first oblique wheel and the second oblique wheel are respectively arranged on two sides of all the bottom wheels; has the technical effects that: the setting of first bevel wheel and second bevel wheel is convenient for the operator application of force to the shallow is crossed to the promotion handcart of being convenient for the operator is light, reduces the walking degree of difficulty of handcart in hollow area, and the area of contact between return pulley, first bevel wheel and second bevel wheel and the ground then can be increaseed to the track, thereby reduces the pressure that the handcart produced ground, and then the handcart of being convenient for walks on soft subaerial, reduces the return pulley, the possibility that first bevel wheel and second bevel wheel are absorbed in ground. "however, the tracked cart is not flexible enough to turn, and is not conducive to driving on curved hills.

Disclosure of Invention

The technical problem that this crawler-type handcart will solve is to overcome prior art's shortcoming, provides a track-type handcart that turns in a flexible way, is applicable to and goes on most crooked mountain road.

The crawler-type handcart comprises a vehicle body, handrails, a controller, a driving mechanism and a crawler-type rolling device, wherein the crawler-type rolling device is an inverted triangular crawler-type rolling device which is longitudinally arranged in the middle right below the vehicle body, and mainly comprises an inverted isosceles triangle crawler frame, a bottom wheel which is rotatably arranged at the vertex angle of the inverted isosceles triangle crawler frame, two front first oblique wheels and two rear first oblique wheels which are as large as one and are respectively rotatably arranged at two bottom angles of the inverted isosceles triangle crawler frame, two front second oblique wheels and two rear second oblique wheels which are as large as one and are respectively rotatably arranged between the front first oblique wheels, the rear first oblique wheels and the bottom wheel, two supporting pulleys which are as large as one and are rotatably arranged between the front first oblique wheels and the rear first oblique wheels, a circle of crawler belts which are sleeved on the bottom wheel, the two supporting pulleys and the four oblique wheels, and the like, wherein the inverted isosceles triangle crawler frame is symmetrically fixed on two identical isosceles triangle metal frames The technical key point is that the bottom wheel is the largest, the front and rear second oblique wheels are smaller, the front and rear first oblique wheels and the oblique wheels support the rear oblique plane of the crawler belt together along the same supporting plane, the rear oblique planes of the crawler belt are kept on the same plane all the time, and the upper planes of the crawler belt are kept on the same plane all the time.

The inverted triangular crawler-type rolling device is connected with a bottom plate of a vehicle body through supporting rods with a damping function, two or more supporting rods are arranged on the left side and the right side of the bottom edge of the inverted isosceles triangular crawler frame respectively, the upper ends of the supporting rods are connected with the bottom plate of the vehicle body, and the lower ends of the supporting rods are connected with the bottom edge of the inverted isosceles triangular crawler frame.

The bottom plate of the vehicle body properly extends forwards, and a driving mechanism is arranged on the bottom plate of the vehicle body extending forwards and is connected with a driving controller through a driving assembly.

The left rotating shaft of the driving mechanism is provided with a driving chain wheel, a bottom plate of the vehicle body below the driving chain wheel is provided with a rectangular hole with a proper size, the left rotating shaft of the front first oblique wheel is provided with a driven chain wheel, the driving chain wheel is arranged above the driven chain wheel, the driving chain wheel is connected to the driven chain wheel through an annular chain, and the middle of the annular chain penetrates through the rectangular hole.

The rear sides of the left side and the right side of the vehicle body are respectively provided with a pause foot with a telescopic function.

The vertex angle degree of the inverted triangular crawler-type rolling device is about 100 degrees.

The diameter ratio of the bottom wheel of the crawler-type rolling device to the front first oblique wheel or the rear first oblique wheel or the supporting belt wheel is about 2: 1.

The left side of the bottom wheel of the crawler-type rolling device is provided with a brake device, and the brake device is connected with a brake controller through a brake assembly.

This crawler-type handcart's beneficial effect is: because the inverted triangular crawler-type rolling device of the crawler-type trolley only has one bottom wheel, the crawler-type trolley has the flexibility of a monocycle when turning and has a stronger turning function when running on most curved mountainous roads.

Drawings

Fig. 1 and 2 are schematic structural diagrams of the crawler-type trolley, wherein the reference numbers are as follows:

1. vehicle body 11, rectangular hole 2 and support rod

3. Triangular crawler frame 31, front first oblique wheel 311 and driven chain wheel

32. Front second oblique wheel 33, bottom wheel 331 and brake

34. Rear first oblique wheel 35, rear second oblique wheel 36 and crawler belt

37. Carrier roller 4, drive mechanism 41, drive sprocket

411. An annular chain 5, a pause foot 6 and a left handrail

61. Brake handle 7, right armrest 71 and power switch

72. Speed regulation handle

Detailed Description

The track-type trolley is further described in detail with reference to the attached drawings.

Example (b): as shown in figures 1 and 2, the vehicle body 1 of the crawler-type hand truck is made of galvanized steel plates through welding, the length is 100 cm, the width is 50 cm, and the height is 40 cm, wherein the bottom plate of the vehicle body 1 is made of thickened galvanized steel plates, a set of inverted crawler-type rolling device is longitudinally arranged in the middle of the lower part of the bottom plate of the vehicle body 1, and mainly comprises an inverted isosceles triangle-shaped track frame 3, a bottom wheel 33 rotatably arranged at the top corner of the inverted isosceles triangle-shaped track frame 3, two front first inclined wheels 31 and rear first inclined wheels 34 which are as large and respectively rotatably arranged at two bottom corners of the inverted isosceles triangle-shaped metal track frame 3, two front second inclined wheels 32 and rear second inclined wheels 35 which are as large and respectively rotatably arranged between the front first inclined wheels 31 and the rear first inclined wheels 34 and the bottom wheel 33, two idler wheels 37 which are as large and rotatably arranged between the front first inclined wheels 31 and the rear first inclined wheels 34, the crawler belt comprises a circle of crawler belts 36 sleeved on a bottom wheel, two belt supporting wheels and four inclined wheels, wherein the bottom wheel, the belt supporting wheels and the inclined wheels are cast by cast iron, the crawler belts 36 are metal rubber hinged crawler belts, the width of the crawler belts is 10 cm, the inverted isosceles triangle crawler belt frame 3 is formed by symmetrically fixing two identical isosceles triangle metal frames on bolt fastening devices at two ends of seven wheel shafts, the two isosceles triangle metal frames are always kept parallel, the bottom wheel, the belt supporting wheels and the inclined wheels are rotatably arranged between the two isosceles triangle metal frames, the technical key is that the bottom wheel is the largest, the front inclined wheel and the rear inclined wheel are smaller, the front inclined wheel and the belt supporting wheels are the smallest, wheels of the front first inclined wheel 31, the front second inclined wheel 32 and the bottom wheel 33 jointly support the front inclined plane of the crawler belts 36, the front inclined plane of the crawler belts 36 is always kept on the same plane, and the rear first inclined wheel 34, The wheels of the rear second oblique wheels 35 and the bottom wheels 33 support the rear oblique surface of the crawler 36 along the common supporting plane of the crawler 36, so that the rear oblique surface of the crawler 36 is always kept on the same plane, the wheels of the front first oblique wheels 31, the rear first oblique wheels 34 and the two supporting wheels 37 support the upper plane of the crawler 36 along the common supporting plane of the crawler 36, so that the upper plane of the crawler 36 is always kept on the same plane, and the inverted triangular crawler type rolling device has flexible turning capability and strong passing capability on a curved mountain road.

Preferably, the inverted triangular crawler rolling device is connected with a bottom plate of the vehicle body 1 through a support rod 2 with a damping function, wherein two support rods 2 are respectively arranged on the left side and the right side of the bottom edge of the inverted isosceles triangular crawler frame 3, a metal damping spring is arranged in each support rod 2, bolt fastening devices are arranged at the upper end and the lower end of each support rod 2, the upper ends of the support rods 2 are connected with the bottom plate of the vehicle body 1 through the bolt fastening devices, the lower ends of the support rods 2 are connected with the bottom edge of the inverted isosceles triangular crawler frame 3 through the bolt fastening devices, and the bolt fastening devices are convenient to install, maintain and replace.

Preferably, the bottom plate of the vehicle body 1 extends forwards properly, the driving mechanism 4 is arranged on the bottom plate of the vehicle body 1 extending forwards, the driving mechanism 4 mainly comprises a lithium battery and an electric speed reducing motor, the lithium battery and the electric speed reducing motor are connected with a power switch 71 and a speed regulating handle 72 through power supply wires, the power supply wires are arranged inside the handrail 7 and the vehicle body 1 in a hidden mode, and the motor driving has the advantages of low noise, small vibration and easiness in control.

Preferably, a driving sprocket 41 is disposed on the left rotating shaft of the electric deceleration motor, a rectangular hole 11 with a proper size is cut on the bottom plate of the vehicle body 1 below the driving sprocket 41, a driven sprocket 311 is disposed on the left rotating shaft of the front first oblique wheel 31, the driving sprocket 41 is disposed above the driven sprocket 311, the driving sprocket 41 is connected to the driven sprocket 311 through a chain 411, wherein the middle part of the chain 411 passes through the rectangular hole 11, wherein the driving sprocket 41 and the driven sprocket 311 are made by cast iron casting, the chain 411 is an annular metal chain, and the chain transmission has many advantages: the device has accurate average transmission ratio, reliable work and high efficiency, and can work in high-temperature, humid and dusty environments.

Preferably, the rear sides of the left side and the right side of the trolley body 1 are respectively provided with a suspension foot 5 with a telescopic function, the suspension foot 5 is made of a long-cylinder-shaped aluminum alloy material and a telescopic assembly, the telescopic and rotatable positioning functions are achieved, and the suspension and parking capacity of the crawler-type trolley is increased.

Preferably, the vertical angle degree of the inverted triangular crawler type rolling device is 100 degrees, and the crawler type trolley has a strong passing function on both a pothole road surface and an ascending and descending road surface of less than 40 degrees.

Preferably, the diameter ratio of the bottom wheels 33 to the front first oblique wheels 31 or the rear first oblique wheels 34 or the supporting pulleys 37 is 2: 1, so that the height of the crawler-type rolling device is reduced, the gravity center of the crawler-type trolley is effectively reduced, and the stability of the crawler-type trolley is improved.

Preferably, the hub brake 331 is arranged on the left side of the bottom wheel 33 of the crawler-type rolling device, the hub brake 331 is connected with the brake handle 61 through a brake cable, the middle-lower section of the brake cable is arranged in the vehicle body 1 in a hidden mode, the upper section of the brake cable penetrates out of the vehicle body from the lower side of the left handrail 6, extends backwards along the lower side of the left handrail 6 and is finally connected with the brake handle 61, and the brake device effectively increases the controllability and the safety of the crawler-type handcart.

The use method comprises the following steps: the crawler-type trolley can convey about one kilogram of goods, mainly aims at relieving the strain of farmers in mountainous areas for carrying out shoulder and back for thousands of years, mainly uses the crawler on the wheel edge of the bottom wheel 33 to support the weight of the trolley when the trolley runs in a curved mountain road with most degrees below 30 degrees, at the moment, the front and the back of the trolley are basically balanced, only needs to hold the handrail lightly to master the direction, and only one bottom wheel is needed, so the trolley has the same flexibility as a monocycle when the trolley turns; when the trolley runs on a few 30-45 degree curved mountain roads, the tracks on the three wheel edges of the front first oblique wheel 31, the front second oblique wheel 32 and the bottom wheel 33 are mainly contacted with the ground at the same time in an uphill road section, namely, the front inclined surface of the inverted triangular track device supports the weight of the trolley, at the moment, the front first oblique wheel 31 and the front second oblique wheel 32 have the functions of the bottom wheel as the bottom wheel 33, but the gravity center of the trolley is slightly deviated, and the handrail needs to be lifted upwards slightly to keep the balance of the trolley; on the downhill section, mainly the tracks on the three wheels of the rear first oblique wheel 34, the rear second oblique wheel 35 and the bottom wheel 33 contact the ground at the same time, namely the rear oblique surface of the inverted triangular track device supports the weight of the trolley, and at this time, the rear first oblique wheel 34 and the rear second oblique wheel 35 take the function of the bottom wheel as the bottom wheel 33, but the gravity center of the trolley is slightly forward, and the handrail needs to be pressed downwards slightly to keep the balance of the trolley.

Claims

1. A crawler-type handcart is composed of a vertical inverted triangular crawler-type rolling unit consisting of an inverted isosceles triangular crawler frame, a bottom wheel at the top corner of said inverted triangular crawler frame, two first and second oblique wheels, two supporting rollers, and a crawler belt consisting of a bottom wheel, two supporting rollers and four oblique wheels, wherein the inverted isosceles triangle crawler frame is formed by symmetrically fixing two identical isosceles triangle metal frames on bolt fastening devices at two ends of seven wheel shafts, the two isosceles triangle metal frames are always kept parallel, the bottom wheels, the belt supporting wheels and the oblique wheels are rotatably arranged between the two isosceles triangle metal frames, the technical key points are that the bottom wheels are the largest, the front and rear second oblique wheels are smaller, the front and rear first oblique wheels and the belt supporting wheels are the smallest, the wheels of the front first oblique wheels, the front second oblique wheels and the bottom wheels jointly support the front inclined plane of the crawler, the front inclined plane of the crawler is always kept on the same plane, the wheels of the rear first oblique wheels, the rear second oblique wheels and the bottom wheels jointly support the rear inclined plane of the crawler, the rear inclined plane of the crawler is always kept on the same plane, and the wheels of the front first oblique wheels, the rear first oblique wheels and the two belt supporting wheels jointly support the upper plane of the crawler, the upper plane of the crawler belt is always kept on the same plane.

2. A crawler-type hand truck according to claim 1, wherein said inverted triangular crawler-type rolling device is connected to a bottom plate of the vehicle body through support bars having a shock-absorbing function, wherein two or more support bars are provided on each of left and right sides of a bottom side of the inverted isosceles triangular track frame, upper ends of the support bars are connected to the bottom plate of the vehicle body, and lower ends of the support bars are connected to the bottom side of the inverted isosceles triangular track frame.

3. A tracked cart as claimed in claim 1 wherein said floor of said cart body is adapted to extend forwardly, and wherein drive means are provided on said forwardly extending floor of said cart body, said drive means being connected to said drive control via said drive assembly.

4. A tracked cart according to claim 1 or claim 3 wherein said drive means has a drive sprocket on the left hand rotatable shaft, a suitably sized slot is provided in the floor of the cart body below the drive sprocket, and a driven sprocket is provided on the left hand rotatable shaft of the front first diagonal wheel, the drive sprocket being disposed above the driven sprocket, the drive sprocket being connected to the driven sprocket by an endless chain, wherein the middle portion of the endless chain extends through the slot.

5. A crawler-type hand truck as claimed in claim 1, wherein a suspending leg having a telescopic function is provided at each of the rear sides of the left and right sides of the body.

6. A tracked cart as claimed in claim 1 wherein said inverted triangular track roller means has an apex angle of about 100 degrees.

7. A tracked cart as claimed in claim 1 wherein said inverted tracked roller means has a ratio of bottom wheels to front first diagonal wheels or rear first diagonal wheels or idler wheels of about 2: 1.

8. The crawler-type trolley according to claim 1, wherein a brake device is arranged on the left side of the bottom wheel of the crawler-type rolling device, and the brake device is connected with the brake controller through a brake assembly.