CN106218680A - Wheel turns over formula electric stair climbing van - Google Patents

Abstract

The invention discloses a wheel-turning electric stair-climbing truck, which comprises a vehicle frame, a front axle and a rear axle, a push rod and a box body are fixed on the vehicle frame, front bearing sleeves are fixed on both sides of the front end of the vehicle frame, and the front bearing The first bearing is installed in the sleeve, the front shaft passes through the front bearing sleeve, the left front wheel and the right front wheel are installed on the front axle, the first large gear is installed on the front axle, and the front drive motor is installed on the front of the frame. The first small gear is installed on the output shaft of the front drive motor, and the first large gear meshes with the first small gear; the rear end of the frame is fixed with a rear bearing sleeve, and a second bearing is installed in the rear bearing sleeve, and the rear shaft passes through the rear bearing sleeve , the rear wheel is installed on the rear axle, the second largest gear is installed on the rear axle, the rear drive motor is installed on the rear of the frame, the second small gear is installed on the output shaft of the rear drive motor, the second largest gear and the second small gears meshing. The invention can effectively solve the problem that the existing courier is very laborious in delivering goods upstairs, can greatly reduce the work intensity of the courier, and has strong practicability.

Description

Wheel turning electric stair climbing truck

technical field

The invention relates to a stair-climbing and cargo-transporting device, in particular to a wheel-turning electric stair-climbing and cargo-transporting vehicle.

Background technique

In recent years, online shopping has become more and more convenient, and most people choose to buy goods online. However, with the increase in the number of online shoppers, the workload of couriers has greatly intensified. Most couriers work from 5:00 am to 8:00 pm every day, especially during holidays, when the demand for goods increases, and their business volume will increase three to four times. But now there are many old residential buildings without elevators, and door-to-door delivery has become the biggest problem for couriers.

The existing stair-climbing trolley mainly adopts two star-shaped wheels, and when going upstairs, the star-shaped wheels are turned upside down by people's pulling force, which requires a lot of manpower in this process. Some stair-climbing trolleys use chain transmission to transmit power, but the chains are easy to wear and require frequent maintenance, and the impact and vibration are relatively large when going upstairs, and the wheels are prone to reverse rotation, causing the car body to slide down, causing danger. For this reason, it is of great practical significance to design and manufacture a kind of stair-climbing trolley that can carry goods upstairs, so as to solve the difficult problem of courier delivering goods upstairs.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and provide a wheel-turning electric stair-climbing truck, which has a simple structure, reasonable design, and convenient operation, which can effectively solve the problem that the existing courier is very laborious in delivering goods upstairs. The problem can greatly reduce the work intensity of the courier, the manufacturing cost is low, the application range is wide, and the practicability is strong.

In order to achieve the above object, the technical solution adopted by the present invention is: a wheel-turning electric stair climbing truck, characterized in that it includes a vehicle frame, on which a push rod and a box body are fixed, and the vehicle frame The front end is equipped with a left front wheel and a right front wheel through the front axle, and the rear end of the vehicle frame is equipped with a rear wheel through the rear axle. Both sides of the front end of the vehicle frame are fixed with front bearing sleeves, and the inside of the front bearing sleeves A first bearing is installed, the front shaft passes through the front bearing sleeve and is connected with the front bearing sleeve through the first bearing, the left front wheel and the right front wheel are installed on the front shaft and driven to rotate by the front shaft, A first large gear is fixedly installed on the front axle, a front drive motor is installed on the front of the vehicle frame, a first pinion is fixedly installed on the output shaft of the front drive motor, and the first pinion and the The first large gear meshes; the rear end of the vehicle frame is fixed with a rear bearing sleeve, and a second bearing is installed in the rear bearing sleeve, and the rear axle passes through the rear bearing sleeve and passes through the second bearing and the rear bearing sleeve connected, the rear wheel is installed on the rear axle and driven to rotate by the rear axle, the second large gear is fixedly installed on the rear axle, the rear drive motor is installed on the rear of the vehicle frame, and the rear drive motor A second pinion is fixedly installed on the output shaft, and the second pinion meshes with the second large gear.

The above-mentioned wheel-turning electric stair-climbing truck is characterized in that: the structure of the left front wheel, the right front wheel and the rear wheel are the same and each includes two oppositely arranged tripods, and the center of the tripod is provided with a long bar hole, a shaft sleeve is arranged between the centers of the two tripods, and a small wheel is connected between the corners of the two tripods through studs and a third bearing, and the third bearing is arranged on Between the small wheel and the double-ended stud, both ends of the double-ended stud are provided with first locking nuts.

The above-mentioned wheel-turning electric stair-climbing truck is characterized in that: the bushings of the left front wheel and the right front wheel are both sleeved on the front axle and cooperate with the front axle in clearance, and the left front wheel and the right front wheel The elongated holes of the front axle respectively match with the two axial positioning platforms provided on the front axle. The outer sides of the wheels are all locked by the second lock nut provided on the front axle; the axle sleeve of the rear wheel is sleeved on the rear axle and fits with the rear axle in clearance, and the elongated hole of the rear wheel is set on the rear axle. The axial positioning platform of the rear wheel is loosely fitted, the left side of the rear wheel is positioned by the pillow block arranged on the rear axle, and the right side of the rear wheel is locked by the third lock nut arranged on the rear axle.

The above-mentioned wheel-turning electric stair-climbing truck is characterized in that: rubber sleeves are installed on the small wheels, the front bearing sleeves on both sides of the front end of the frame are symmetrically arranged on the left and right, and the left front wheel is arranged on the left side. On the outside of the front bearing sleeve, the right front wheel is arranged on the outside of the front bearing sleeve on the right side, and the rear wheel is located on the right side of the rear bearing sleeve.

The above-mentioned wheel-turning electric stair-climbing truck is characterized in that: the third bearing is a one-way bearing.

The above-mentioned wheel-turning electric stair-climbing truck is characterized in that: the frame is inclined forward, and the height of the front axle from the horizontal plane is greater than the height of the rear axle from the horizontal plane.

The above-mentioned wheel-turning electric stair-climbing truck is characterized in that: the box includes a plurality of small boxes arranged sequentially from bottom to top, and two adjacent small boxes are connected by hinges, so that The box body is located at the front side of the push rod, and the bottom of the box body is fixed on the vehicle frame by screws.

The above-mentioned wheel-turning electric stair-climbing truck is characterized in that: the push rod is arranged obliquely, and the lower end of the push rod is fixed to the rear of the vehicle frame by bolts.

The above-mentioned wheel-turning electric stair-climbing truck is characterized in that: the front drive motor is installed on the frame through the front motor base, the front motor base is fixed on the frame, and the front drive motor is installed on the front motor on the seat; the rear drive motor is installed on the vehicle frame through the rear motor seat, the rear motor seat is fixed on the vehicle frame, and the rear drive motor is installed on the rear motor seat.

The above-mentioned wheel-type electric stair-climbing truck is characterized in that: the first large gear is fixedly installed in the middle of the front axle, and the second large gear is located between the rear wheel and the rear bearing sleeve.

Compared with the prior art, the present invention has the following advantages:

1. The present invention has simple structure, reasonable design and convenient operation.

2. The frames of the left front wheel, the right front wheel and the rear wheel of the present invention all adopt a tripod structure, three small wheels are installed at the corners of the tripod, and the third bearings installed between the small wheels and the double-ended studs are single Directional bearings; by rationally designing the size of the tripod, it can be ensured that when climbing stairs, for any size of stairs, the contact point between the small wheel and the step can always be located on the step surface, so as to ensure that the wheel will not slide directly along the edge of the step. Moreover, since the small wheel is in contact with the horizontal surface of the step, under the condition that the small wheel and the step surface do not slip, the resultant force acting on the small wheel by the step surface is obliquely upward, which meets the requirements for climbing stairs. In addition, since the small wheel can only rotate in one direction, when the small wheel is in contact with the step surface, the small wheel and the tripod are relatively stationary, and they are combined with the tripod as a component to form a support and provide a moment arm, which can also effectively avoid climbing stairs When the car body slides due to the reverse rotation of the small wheel.

3. The left front wheel and the right front wheel of the present invention are equipped with a first rubber sleeve, and the rear wheels are equipped with a second rubber sleeve to provide the gripping friction required for the stair-climbing truck to go upstairs; The height of the axle distance from the horizontal plane is greater than the height of the rear axle distance from the horizontal plane, so as to prevent the rear portion of the vehicle frame from being stuck with the lower stairs when going upstairs.

4. Compared with the traditional stair-climbing trolley, the present invention adopts three wheels, namely the left front wheel, the right front wheel and the rear wheel, which makes going upstairs more stable; adopts gear transmission, which effectively solves the problem of the existing stair-climbing trolley. Adopting the chain transmission mode, the chain is easy to wear, requires frequent maintenance, and the impact and vibration are relatively large when going upstairs. The transmission efficiency is high, the transmission is stable, and the bearing capacity is strong.

5. The present invention is driven by dual motors, which can realize automatic stair climbing by replacing manual operation with electric motors, which reduces the labor intensity of the courier; the stair-climbing truck can not only realize stair climbing, but also can be used as a shopping cart to walk on flat ground to realize upstairs and flat ground. Shipping integration.

6. The present invention not only effectively solves the problem of the courier delivering goods upstairs, reduces the work intensity of the courier, but also solves the problem that materials for decoration of a new home cannot enter the elevator, and helps workers to carry materials upstairs; in addition, it can solve the problem of empty nests The elderly and people with disabilities have difficulty going upstairs with heavy loads after shopping, and solve the inconvenience of transporting goods to the top of the mountain, greatly reducing manpower.

7. The invention has low production cost, high practical value, wide application range and good popularization and application value.

The present invention will be described in further detail below with reference to the accompanying drawings and examples.

Description of drawings

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

Fig. 2 is a schematic structural view of the present invention after the push rod and the box are removed.

Fig. 3 is the structural representation of left front wheel, right front wheel, rear wheel of the present invention.

Explanation of reference signs:

1—frame; 2—second lock nut; 3—left front wheel;

4—front bearing sleeve; 5—front axle; 6—the first large gear;

7—the first pinion; 8—the front motor seat; 9—the rear axle;

10—right front wheel; 11—front drive motor; 12—rear drive motor;

13—the second small gear; 14—the second large gear; 15—the rear motor seat;

16—rear wheel; 17—rear bearing sleeve; 18—long hole;

19—box; 20—hinge; 21—push rod;

22—the first lock nut; 23—the stud; 24—the small wheel;

25—rubber sleeve; 26—tripod; 27—third bearing;

28—axle sleeve.

detailed description

As shown in Fig. 1 and Fig. 2, the present invention comprises vehicle frame 1, and described vehicle frame 1 is fixed with push rod 21 and box body 19, and the front end of described vehicle frame 1 is installed with left front wheel 3 and Right front wheel 10, the rear end of described vehicle frame 1 is equipped with rear wheel 16 through rear axle 9, and the front end both sides of described vehicle frame 1 is all fixed with front bearing sleeve 4, and the first bearing sleeve 4 is installed in described front bearing sleeve 4 A bearing, the front axle 5 passes through the front bearing sleeve 4 and is connected with the front bearing sleeve 4 by the first bearing, the left front wheel 3 and the right front wheel 10 are all installed on the front axle 5 and are driven by the front axle 5 drives the rotation, the first large gear 6 is fixedly installed on the front axle 5, the front drive motor 11 is installed on the front part of the vehicle frame 1, and the first small gear wheel is fixedly installed on the output shaft of the front drive motor 11. gear 7, the first small gear 7 meshes with the first large gear 6; the rear end of the vehicle frame 1 is fixed with a rear bearing sleeve 17, and a second bearing is installed in the rear bearing sleeve 17, and the rear axle 9 passes through the rear bearing sleeve 17 and is connected with the rear bearing sleeve 17 through the second bearing. The rear wheel 16 is installed on the rear axle 9 and is driven to rotate by the rear axle 9. The second axle is fixedly installed on the rear axle 9. Bull gear 14, rear drive motor 12 is installed on the rear portion of described vehicle frame 1, and second pinion 13 is fixedly installed on the output shaft of described rear drive motor 12, and described second pinion 13 and second bull gear 14 meshes.

Wherein, the first pinion 7 is keyed to the output shaft of the front drive motor 11, and the first large gear 6 is assembled with the front shaft 5 through a key and collar; the second pinion 13 is keyed to the output shaft of the rear drive motor 12. Connect, the second large gear 14 is assembled with the rear axle 9 by key and collar, and the front bearing sleeve 4 and the rear bearing sleeve 17 are all welded on the vehicle frame 1. The transmission part adopts gear transmission. Compared with the chain transmission mode, it has the advantages of compact structure, long working life, high transmission efficiency and strong bearing capacity. The small gear drives the large gear to achieve deceleration and torque increase; the power source adopts double motors , The front and rear wheels are driven at the same time, making the climbing process more stable and powerful; the body adopts a tripod structure, which can reduce the weight of the body while ensuring stability.

As shown in Figure 3, the structures of the left front wheel 3, the right front wheel 10 and the rear wheel 16 are identical and all include two opposite tripods 26, the center of the tripod 26 has a long hole 18, An axle sleeve 28 is arranged between the centers of the two tripods 26, and a small wheel 24 is connected between the corners of the two tripods 26 by a stud 23 and a third bearing 27. The bearing 27 is arranged between the small wheel 24 and the double-ended stud 23 , and both ends of the double-ended stud 23 are provided with first locking nuts 22 .

This wheel structure design can ensure that when climbing stairs, for stairs of any size, the contact point between the small wheel 24 and the step can always be located on the step surface by rationally designing the size of the tripod, thereby ensuring that the wheel will not directly follow the edge of the step. slide down. And, because the small wheel 24 is in contact with the level surface of the step, under the condition that the small wheel 24 and the step surface are not slipped, the resultant force acting on the small wheel 24 by the step surface is obliquely upward, which meets the requirements for climbing stairs. In addition, the connection mode between the wheel and the shaft is simple, and there are few parts, so that the wheel can be easily disassembled and assembled.

As shown in Figures 1 and 2, the axle sleeves of the left front wheel 3 and the right front wheel 10 are all sleeved on the front axle 5 and are in clearance fit with the front axle 5, and the left front wheel 3 and the right front wheel 10 The elongated holes of the front shaft 5 are respectively clearance-fitted with two axial positioning platforms provided on the front axle 5, and the inner sides of the left front wheel 3 and the right front wheel 10 are positioned through the pillow blocks provided on the front axle 5, and the left front wheel The outer sides of the wheel 3 and the right front wheel 10 are all locked by the second locking nut 2 provided on the front axle 5; The elongated hole of rear wheel 16 is clearance-fitted with the axial positioning platform provided on rear axle 9, and the left side of described rear wheel 16 is positioned by the pillow block that is provided with on rear axle 9, and the right side of described rear wheel 16 passes rear axle. The third locking nut arranged on the shaft 9 is locked.

As shown in Figures 1 to 3, rubber sleeves 25 are installed on the small wheels 24, the front bearing sleeves 4 on both sides of the front end of the vehicle frame 1 are symmetrically arranged on the left and right, and the left front wheel 3 is arranged on the front left side. The outer side of the bearing sleeve, the right front wheel 10 is arranged on the outer side of the front bearing sleeve on the right side, and the rear wheel 16 is located on the right side of the rear bearing sleeve 17 .

In this embodiment, the third bearing 27 is a one-way bearing, and the small wheel 24 can only rotate in one direction by using the one-way bearing. When the small wheel 24 is in contact with the step surface, the small wheel 24 and the tripod 26 are relatively stationary , combined with the tripod 26 as a component, thereby forming a support and providing a moment arm, and can also effectively avoid the car body sliding due to the reverse rotation of the small wheel 24 when climbing stairs.

In this embodiment, the vehicle frame 1 is arranged inclined forward, and the height of the front axle 5 from the horizontal plane is greater than the height of the rear axle 9 from the horizontal plane, that is, the size of the left front wheel 3 and the right front wheel 10 is greater than that of the rear wheel 16. Dimensions, when preventing going upstairs, the rear portion of vehicle frame 1 is stuck with lower floor stair.

As shown in Figure 1, the box body 19 includes a plurality of small boxes arranged sequentially from bottom to top, and two adjacent small boxes are connected by hinges 20, and the box body 19 is located on the push rod. 21, the bottom of the box body 19 is fixed on the vehicle frame 1 by screws. The frame 1 is a tripod welded by aluminum alloy materials, the small box is assembled from sheet metal, and the box 19 is made into a foldable structure, which can be adjusted according to the amount of goods to hold different amounts of goods; When the courier transports a large amount of goods, it can be expanded to increase the volume, and when the goods transported are small, it can be folded to reduce space.

As shown in FIG. 1 , the push rod 21 is arranged obliquely, and the lower end of the push rod 21 is fixed to the rear of the vehicle frame 1 by bolts.

As shown in Figures 1 and 2, the front drive motor 11 is installed on the vehicle frame 1 through the front motor mount 8, the front motor mount 8 is fixed on the vehicle frame 1, and the front drive motor 11 is installed on the front motor On the seat 8; the rear drive motor 12 is installed on the vehicle frame 1 through the rear motor seat 15, the rear motor seat 15 is fixed on the vehicle frame 1, and the rear drive motor 12 is installed on the rear motor seat 15.

In this embodiment, the first large gear 6 is fixedly installed in the middle of the front axle 5 , and the second large gear 14 is located between the rear wheel 16 and the rear bearing sleeve 17 .

The working principle of the present invention is: when climbing stairs, turn on the power switch of the front drive motor 11 and the rear drive motor 12, then the front drive motor 11 drives the first pinion 7 to rotate, and the first pinion 7 is fixedly installed on the front axle 5 The first large gear 6 on the top meshes to transmit power to the front axle 5, driving the left front wheel 3 and the right front wheel 10 to rotate; the rear drive motor 12 drives the second small gear 13 to rotate, and the second small gear 13 is fixedly installed The second large gear 14 engagement on the rear axle 9 transmits power to the rear axle 9 to drive the rear wheel 16 to rotate, then the left front wheel 3, the right front wheel 10 and the rear wheel 16 turn over and advance. When the front wheel of the trolley encounters a step, a small wheel on the front wheel is turned over to contact the step surface, and the front wheel rotates with the support of the small wheel, and turns to the next small wheel to contact the next step surface, forming a new support point, so that the front wheels can climb up the stairs. When the rear wheels meet the steps, the same principle is used to climb the stairs. Because the third bearing 27 installed between the small wheel 24 and the double-ended stud 23 is a one-way bearing, it can be ensured that the small wheel 24 can only rotate in one direction, and the car body will slide down due to the reverse rotation of the small wheel 24 when going upstairs. . Rubber sleeve 25 is installed on the steamboat 24, to provide the required grasping frictional force of going upstairs to climb the stairs transport truck. When running on flat ground, adjust the stair-climbing truck to make the left front wheel 3, the right front wheel 10 and the two front wheels on the rear wheel 16 touch the ground, turn off the power supply, and directly promote the push rod 21 to advance, so that the small wheel 24 rolls on the ground. Realize the flat running of the stair-climbing truck.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in any way. All simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present invention still belong to the technology of the present invention. within the scope of protection of the scheme.

Claims (10)

1. a wheel turns over formula electric stair climbing van, it is characterised in that: include that vehicle frame (1), described vehicle frame are fixed with push rod on (1) (21) and casing (19), the front end of described vehicle frame (1) is provided with the near front wheel (3) and off-front wheel (10), described car by front axle (5) The rear end of frame (1) is provided with trailing wheel (16) by rear axle (9), and the both sides, front end of described vehicle frame (1) are respectively and fixedly provided with front axle bearing sleeve (4), being provided with clutch shaft bearing in described front axle bearing sleeve (4), described front axle (5) is through front axle bearing sleeve (4) and by described first Bearing is connected with front axle bearing sleeve (4), and described the near front wheel (3) and off-front wheel (10) are installed in front axle (5) and above and are carried by front axle (5) Dynamic rotation, described front axle (5) is installed with the first gear wheel (6), and the front portion of described vehicle frame (1) is provided with front wheel driving motor (11), the output shaft of described front wheel driving motor (11) is installed with the first little gear (7), described first little gear (7) with First gear wheel (6) engages；The rear end of described vehicle frame (1) is fixed with rear axle bearing sleeve (17), installs in described rear axle bearing sleeve (17) Having the second bearing, described rear axle (9) is connected through rear axle bearing sleeve (17) and by described second bearing with rear axle bearing sleeve (17), institute Stating trailing wheel (16) be arranged on rear axle (9) and driven rotation by rear axle (9), described rear axle is installed with the second canine tooth on (9) Wheel (14), the rear portion of described vehicle frame (1) is provided with rear drive motor (12), fixing on the output shaft of described rear drive motor (12) Being provided with two pinion (13), described two pinion (13) is engaged with second largest gear (14).

2. turn over formula electric stair climbing van according to the wheel described in claim 1, it is characterised in that: described the near front wheel (3), off-front wheel (10) identical with the structure of trailing wheel (16) and all include two tripods being oppositely arranged (26), the center of described tripod (26) Have strip hole (18), between the center of two described tripods (26), be provided with axle sleeve (28), two described tripods (26) Corner between by studs (23) and the 3rd bearing (27) connection have steamboat (24), described 3rd bearing (27) to be arranged on Between steamboat (24) and studs (23), the two ends of described studs (23) are provided with the first locking nut (22).

3. turn over formula electric stair climbing van according to the wheel described in claim 2, it is characterised in that: before described the near front wheel (3) and the right side The axle sleeve of wheel (10) be all set in front axle (5) upper and with front axle (5) matched in clearance, described the near front wheel (3) and off-front wheel (10) Strip hole two axial positioning table matched in clearance arranging upper with front axle (5), described the near front wheel (3) and off-front wheel (10) respectively Inner side is all positioned by the upper pillow block arranged of front axle (5), and front axle is all passed through in the outside of described the near front wheel (3) and off-front wheel (10) (5) upper the second locking nut (2) locking arranged；The axle sleeve of described trailing wheel (16) be set in rear axle (9) upper and and rear axle (9) between Gap coordinates, the strip hole of described trailing wheel (16) the axial positioning table matched in clearance that arrange upper with rear axle (9), described trailing wheel (16) Passing on left the upper pillow block location arranged of rear axle (9), the right side of described trailing wheel (16) is by upper the 3rd locking arranged of rear axle (9) Nut check.

4. turn over formula electric stair climbing van according to the wheel described in claim 2, it is characterised in that: described steamboat is provided with on (24) Rubber sleeve (25), the front axle bearing sleeve (4) of described vehicle frame (1) both sides, front end is symmetrical set, and described the near front wheel (3) is located at left side Front axle bearing sleeve outside, described off-front wheel (10) be located at right side front axle bearing sleeve outside, described trailing wheel (16) is positioned at rear axle bearing sleeve (17) right side.

5. turn over formula electric stair climbing van according to the wheel described in claim 2, it is characterised in that: described 3rd bearing (27) is single To bearing.

6. turn over formula electric stair climbing van according to the wheel described in claim 1, it is characterised in that: described vehicle frame (1) turns forward Arranging, the height of described front axle (5) distance horizontal plane is more than the height of rear axle (9) distance horizontal plane.

7. turn over formula electric stair climbing van according to the wheel described in claim 1, it is characterised in that: described casing (19) includes multiple The small box set gradually from bottom to up, is connected by hinge (20) between adjacent two described small box, described casing (19) being positioned at the front side of push rod (21), the bottom of described casing (19) is fixed by screws on vehicle frame (1).

8. turn over formula electric stair climbing van according to the wheel described in claim 1, it is characterised in that: described push rod (21) tilts to set Putting, the lower end of described push rod (21) is bolted on the rear portion of vehicle frame (1).

9. turn over formula electric stair climbing van according to the wheel described in claim 1, it is characterised in that: described front wheel driving motor (11) is led to Crossing front motor seat (8) to be arranged on vehicle frame (1), described front motor seat (8) is fixed on vehicle frame (1), described front wheel driving motor (11) it is arranged on front motor seat (8)；Described rear drive motor (12) is arranged on vehicle frame (1) by rear motor seat (15), institute Stating rear motor seat (15) to be fixed on vehicle frame (1), described rear drive motor (12) is arranged on rear motor seat (15).

10. turn over formula electric stair climbing van according to the wheel described in claim 1, it is characterised in that: described first gear wheel (6) is solid Dingan County is contained in the middle part of front axle (5), and described second largest gear (14) is positioned between trailing wheel (16) and rear axle bearing sleeve (17).