CN213098869U

CN213098869U - Travelling mechanism of automatic stair climbing vehicle

Info

Publication number: CN213098869U
Application number: CN202021485660.0U
Authority: CN
Inventors: 周俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-05-04
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses an automatic running gear of stair climbing car, including rear-axle housing and the drive mechanism of setting in the rear-axle housing, rear-axle housing's power input end is connected with the drive shaft, rear-axle housing's bilateral symmetry is provided with two half-bridge subassemblies, the half-bridge subassembly includes the sleeve pipe and sets up the semi-axis in the sleeve pipe, be connected with the support frame on the sleeve pipe, sheathed tube tip is provided with the bearing housing, be provided with first bearing in the bearing housing, be provided with the bearing clamp plate on the semi-axis in the first bearing outside, the inner dial has set gradually on the semi-axis in the bearing clamp plate outside, first gear, the second gear, the third gear, outer dial and half-shaft bolt, inner dial and outer dial are symmetrical arrangement's triangle-shaped structure, 3 corners between inner dial and the outer dial respectively are provided with 1 swivel subassembly, become 120 contained angle between 3. The utility model discloses stability is good, and it is smooth and easy to climb the building, and the suitability is strong, has apparent economic value and social value.

Description

Travelling mechanism of automatic stair climbing vehicle

Technical Field

The utility model relates to a climb building technical field, concretely relates to automatic running gear of stair climbing car.

Background

The disabled and the old who need to take the wheelchair to go out due to physical defects or diseases have a large number of people, when the disabled and the old live in a building without an elevator facility, the disabled and the old become something of no difficulty going upstairs and downstairs, and secondly, when the disabled and the old live in the building meet obstacles such as shoulders, doorsills, steps and the like, the people are difficult to pass through, and although barrier-free channels and hot lines are opened in many units and departments at present, barrier-free passing in all places cannot be realized. In view of the above circumstances, stair climbing wheelchairs (also called stair climbing vehicles) such as five-star wheel type wheelchairs and crawler-type wheelchairs have been developed, which can basically solve the problem that a person who takes a wheelchair goes upstairs and downstairs, but also have some problems: firstly, when going upstairs and downstairs, the five-star wheel type stair climbing wheelchair needs to be pushed and pulled manually, the stability is poor, the safety coefficient is low, and when going upstairs and downstairs, the crawler type stair climbing wheelchair needs to be pushed to a stair opening by a nursing staff, so that the stair climbing can be carried out by operating the stepping motor to control the crawler to move; secondly, the existing stair climbing vehicle can not realize seamless connection on the flat ground and places with barriers well, the vehicle capable of climbing stairs needs to be pushed by external force when running on the flat ground, and the vehicle capable of running on the flat ground can not climb stairs or pass through some barriers, so that the existing problems can limit the living radius and the activity space of wheelchair-carrying personnel and still can not solve the problem of difficult travel of the wheelchair-carrying personnel. Therefore, it is objective to develop a traveling mechanism of an automatic stair climbing vehicle with good stability, smooth stair climbing and strong applicability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a good stability climbs the building smoothly, and the suitability is strong automatic stairs-mover's running gear climbs.

The utility model aims at realizing the purpose, which comprises a rear axle housing and a transmission mechanism arranged in the rear axle housing, wherein the power input end of the rear axle housing is connected with a driving shaft, the driving shaft is in transmission connection with the transmission mechanism, two half-bridge components are symmetrically arranged on both sides of the rear axle housing, each half-bridge component comprises a sleeve and a half shaft arranged in the sleeve, one end of each half shaft is in transmission connection with the transmission mechanism, the other end of each half shaft extends out of the sleeve, the sleeve is connected with a support frame, one end of the sleeve is connected with the rear axle housing through a flange, the other end of the sleeve is provided with a bearing sleeve, a first bearing is arranged in the bearing sleeve, a bearing pressure plate is arranged on the half shaft outside the first bearing, the bearing pressure plate is connected with the end part of the bearing sleeve through a pressure plate bolt, an inner rotary disc, a, the end part of the half shaft is processed with threads matched with the half shaft bolt, the half shafts between the bearing pressure plate and the inner turntable, between the inner turntable and the first gear, between the first gear and the second gear, between the second gear and the third gear, between the third gear and the outer turntable, and between the outer turntable and the half shaft bolt are all provided with bushings, the first gear, the second gear and the third gear have the same structure size, the first gear, the second gear and the third gear are fixedly connected with the half shaft, the inner part of the inner turntable and the inner turntable are all provided with bearing seats, the bearing seats are internally provided with second bearings, the inner turntable and the outer turntable are of triangular structures which are symmetrically arranged, 1 rotating wheel component is respectively arranged at 3 corners between the inner turntable and the outer turntable, 3 rotating wheel components are respectively arranged at included angles of 120 degrees, each rotating wheel component comprises a wheel shaft, a chain wheel and a roller wheel, and two ends of the wheel shaft are respectively fixedly connected with the inner turntable and the outer, the chain wheel is fixedly arranged on one side of the roller wheel, a third bearing is arranged between the inner ring of the roller wheel and the wheel shaft, the chain wheels of the 3 rotating wheel assemblies are respectively connected with the first gear, the second gear and the third gear through chains, and the gear ratio of the number of the teeth of the first gear, the second gear and the third gear to the chain wheel is more than 2: 1.

Furthermore, the first gear, the second gear, the third gear and the half shaft are connected in a key connection mode.

Furthermore, a shaft brake disc is arranged on a half shaft between the bearing pressure plate and the inner rotating disc, and the shaft brake disc is connected with the half shaft in a key connection mode.

Furthermore, a turntable brake disc is arranged on a half shaft between the bearing pressure plate and the inner rotary disc, and the turntable brake disc is fixedly connected with the inner rotary disc.

Furthermore, arc-shaped grooves are processed in the middle of three sides of the inner rotating disc and the outer rotating disc.

Furthermore, a strip-shaped hole is machined at each corner of the inner rotating disc and the outer rotating disc along the radial direction, and two ends of the wheel shaft are respectively positioned in two corresponding strip-shaped holes in the inner rotating disc and the outer rotating disc.

The utility model is arranged on the rear axle of the stair climbing vehicle, when in use, the driving device provides power and transmits the power to the driving shaft, the transmission mechanism in the rear axle housing transmits the power of the driving shaft to the half axle to drive the half axle to rotate, the half axle drives the first gear, the second gear and the third gear to rotate, the first gear, the second gear and the third gear respectively drive the chain wheel in the rotating wheel component to rotate through the chain, the chain wheel drives the roller to rotate when rotating, the roller rotates on the wheel shaft through the third bearing, when the stair climbing vehicle is positioned on the flat ground, two rollers land, one roller idles, and the two rollers land drive the stair climbing vehicle to normally run, when the stair climbing vehicle encounters an obstacle or a stair, the land and the roller which is close to the front abuts against the edge of the obstacle or the stair, the roller can receive the resistance and the friction force generated by the ground, the obstacle or the stair, when resistance and frictional force reach certain degree, this gyro wheel will stall to make 2 remaining gyro wheels and semi-axis stall, at this moment, 3 gyro wheel subassemblies and first gear, second gear, third gear, inner dial and parts such as outer carousel form a whole, because the gyro wheel can not rotate, will drive this whole rotation by the semi-axis, climb up one-level stair, the gyro wheel of original idle running lands this moment, climb up one-level stair again when it supports on stair, analogize in proper order, after climbing up stair, resume two gyro wheels and land normally and go. The utility model discloses constitute by two half-bridge subassemblies, all set up 3 gyro wheels in every half-bridge subassembly, normally travel and all have 4 gyro wheels to land simultaneously and support when climbing the building, be difficult for overturning, comparatively stable, travel and climb the building in-process and do not need the external force propelling movement, 3 gyro wheels alternate operation, travel and climb the building process comparatively smoothly, can improve disabled person and old person's life radius and activity space by a wide margin, the suitability is stronger. The utility model discloses stability is good, and it is smooth and easy to climb the building, and the suitability is strong, has apparent economic value and social value.

Drawings

Fig. 1 is a schematic top view of the present invention;

fig. 2 is a left side view structure diagram of the present invention;

FIG. 3 is a schematic sectional view of the present invention;

FIG. 4 is an enlarged view of node A in FIG. 3;

in the figure: 1-rear axle housing, 2-driving shaft, 3-sleeve, 4-half shaft, 5-bearing housing, 6-first bearing, 7-bearing pressure plate, 8-pressure plate bolt, 9-inner turntable, 10-first gear, 11-second gear, 12-third gear, 13-outer turntable, 14-half shaft bolt, 15-bushing, 16-wheel shaft, 17-chain wheel, 18-roller, 19-chain, 20-shaft brake disc, 21-turntable brake disc, 22-groove, 23-strip hole, 24-bearing seat, 25-second bearing, 26-support frame and 27-third bearing.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited in any way, and any changes or improvements based on the present invention are all within the protection scope of the present invention.

As shown in figures 1-4, the utility model comprises a rear axle housing 1 and a transmission mechanism arranged in the rear axle housing 1, wherein the power input end of the rear axle housing 1 is connected with a driving shaft 2, the driving shaft 2 is in transmission connection with the transmission mechanism, the rear axle housing 1, the transmission mechanism and the driving shaft 2 are all of the prior structure, the transmission mechanism is positioned in the rear axle housing 1, the driving shaft 2 is connected with the transmission mechanism, the transmission mechanism transmits the power input by the driving shaft 2 to two half shafts 4 to drive the two half shafts 4 to rotate, two half-bridge components are symmetrically arranged on two sides of the rear axle housing 1, the half-bridge components comprise a sleeve 3 and the half shaft 4 arranged in the sleeve 3, one end of the half shaft 4 is in transmission connection with the transmission mechanism, the other end extends out of the sleeve 3, the sleeve 3 is connected with a support frame 26, one end of, a first bearing 6 is arranged in a bearing sleeve 5, a bearing pressure plate 7 is arranged on a half shaft 4 outside the first bearing 6, the bearing pressure plate 7 is connected with the end part of the bearing sleeve 5 through a pressure plate bolt 8, an inner rotary disc 9, a first gear 10, a second gear 11, a third gear 12, an outer rotary disc 13 and a half shaft bolt 14 are sequentially arranged on the half shaft 4 outside the bearing pressure plate 7, threads matched with the half shaft bolt 14 are processed on the end part of the half shaft 4, bushings 15 are arranged on the half shafts 4 between the bearing pressure plate 7 and the inner rotary disc 9, between the inner rotary disc 9 and the first gear 10, between the first gear 10 and the second gear 11, between the second gear 11 and the third gear 12, between the third gear 12 and the outer rotary disc 13, and between the outer rotary disc 13 and the half shaft bolt 14, the bushings 15 are used for adjusting assembly gaps and distances among the parts and limiting the sliding of keys, and the first gear 10, The second gear 11 and the third gear 12 have the same structural size, the first gear 10, the second gear 11, the third gear 12 and the half shaft 4 are fixedly connected, bearing seats 24 are respectively arranged inside the inner turntable 9 and the outer turntable 13, a second bearing 25 is arranged in the bearing seats 24, the inner turntable 9 and the outer turntable 13 are of a symmetrical triangular structure, 1 rotating wheel assembly is respectively arranged at 3 corners between the inner turntable 9 and the outer turntable 13, the 3 rotating wheel assemblies are respectively arranged at an included angle of 120 degrees, each rotating wheel assembly comprises a wheel shaft 16, a chain wheel 17 and a roller 18, two ends of the wheel shaft 16 are respectively and fixedly connected with the inner turntable 9 and the outer turntable 13, the chain wheel 17 is fixedly arranged at one side of the roller 18, a third bearing 27 is arranged between an inner ring of the roller 18 and the wheel shaft 16, when in actual use, one third bearing 27 can be arranged as required, or two third bearings 27 can be arranged side by side, the chain wheels 17 of the 3 rotating wheel assemblies are respectively connected with the first gear 10, the second gear 11 and the third gear 12 through chains 19, and the gear ratio of the number of teeth of the first gear 10, the second gear 11 and the third gear 12 to the number of teeth of the chain wheels 17 is more than 2: 1.

The utility model is arranged on the rear axle of the stair climbing vehicle, when in use, the driving device provides power, the driving device can use the common electric driving device such as a storage battery and transmits the power to the driving shaft 2, the transmission mechanism in the rear axle housing 1 transmits the power of the driving shaft 2 to the half axle 4 to drive the half axle 4 to rotate, the half axle 4 drives the first gear 10, the second gear 11 and the third gear 12 to rotate when rotating, the first gear 10, the second gear 11 and the third gear 12 respectively drive the chain wheel 17 in the rotating wheel component to rotate through the chain 19, the chain wheel 17 drives the roller 18 to rotate when rotating, the roller 18 rotates on the wheel shaft 16 through the third bearing 27, when the stair climbing vehicle is positioned on the flat ground, two rollers 18 land, one roller 18 idles, and the stair climbing vehicle is driven by the two rollers 18 land to normally run, when the stair climbing vehicle encounters an obstacle or stairs, the land and one roller 18 in front is abutted on the edge of the obstacle or the stairs, the roller 18 can be subjected to the resistance and the friction force generated by the ground, obstacles or stairs, when the resistance and the friction force reach a certain degree, the roller 18 stops rotating, so that the rest 2 rollers 18 and the half shaft 4 stop rotating, at this time, 3 rotating wheel assemblies, the first gear 10, the second gear 11, the third gear 12, the inner rotary disk 9, the outer rotary disk 13 and the like form a whole, because the roller 18 cannot rotate, but the half shaft 4 still has torque and power, the half shaft 4 drives the whole to rotate at this time, the whole is driven to climb up the first-level stairs, the roller 18 which is idle originally lands on the ground, climbs up the first-level stairs again when the roller 18 abuts against the stairs, and the like in turn, and the normal running of the two rollers 18 is resumed after climbing up the stairs. The utility model discloses constitute by two half-bridge subassemblies, all set up 3 gyro wheels 18 in every half-bridge subassembly, normally travel and all have 4 gyro wheels 18 to land simultaneously when climbing the building and support, be difficult for overturning, comparatively stable, travel and climb the building in-process and do not need the external force propelling movement, 3 gyro wheels 18 alternate operation, travel and climb the building process comparatively smoothly, can improve disabled person and old person's radius of life and activity space by a wide margin, the suitability is stronger.

The utility model discloses can be used to the stair climbing operation of climbing the building car, also can be used to the downstairs of climbing the building car simultaneously, when downstairs, the climbing car is in two gyro wheels 18 earlier and lands the normal running state of a gyro wheel 18 idle running, when the climbing car is in stair top edge, one of them gyro wheel 18 that leans on before can roll away from stair and be in unsettled state temporarily, at this moment, under the effect of climbing the building car and the personnel's of taking gravity, this gyro wheel 18 sinks automatically, fall on next-level stair, and drive inner rotating disk 9 and outer rotating disk 13 and wholly rotate, accomplish the downstairs operation of one-level stair, three gyro wheel 18 constantly overturns in turn according to above-mentioned step, can realize the downstairs operation of climbing the building car.

The utility model can be used for the refitting of the existing wheelchair and the refitting of the existing motorcycle, so that the vehicle can normally run on the flat ground, and also has the capability of climbing stairs, climbing steps and climbing over obstacles, when the vehicle normally runs, the roller 18 rotates and drives the stair climbing vehicle to move, at the moment, the inner rotary disk 9 and the outer rotary disk 13 do not rotate, when encountering stairs, steps and obstacles, the roller 18 can not rotate due to the action of friction and resistance, at the moment, the inner rotary disk 9 and the outer rotary disk 13 can integrally rotate to finish the operation of climbing stairs or climbing over obstacles, when the vehicle is actually used, the radius of the first gear 10, the second gear 11, the third gear 12 and the roller 18 can be increased, the capability of passing through obstacles is improved, meanwhile, the tooth number of the first gear 10, the second gear 11 and the third gear 12 and the tooth number ratio of the roller 18 are increased, the reverse braking force of the roller 18 for the half shaft 4 when encountering obstacles is increased, the turning ability of the inner dial 9 and the outer dial 13 is improved.

Preferably, the first gear 10, the second gear 11, and the third gear 12 are all connected to the axle shaft 4 by a key connection for easy installation, maintenance, and replacement.

Be provided with axle brake disc 20 on the semi-axis 4 between bearing pressing plate 7 and the inner rotating disc 9, for the convenience of installation, maintenance and change, adopt the mode of key connection to be connected between axle brake disc 20 and the semi-axis 4, axle brake disc 20's effect is brakied to semi-axis 4, and when in actual use, optional staple bolt formula braking mode also can choose other braking modes as required for use.

Be provided with carousel brake disc 21 on the semi-axis 4 between bearing clamp plate 7 and the inner rotor 9, fixed connection between carousel brake disc 21 and the inner rotor 9, the effect of carousel brake disc 21 is to brakie inner rotor 9 to make the whole that forms by members such as inner rotor 9 and outer rotor 13 can not overturn, can make the stair climbing car stop on stair and step, satisfy the stair climbing car and need the needs of pause owing to special circumstances in the stair climbing process.

Arc-shaped grooves 22 are machined in the middle of three sides of the inner rotary disc 9 and the outer rotary disc 13, the inner rotary disc 9 and the outer rotary disc 13 are in an integrally rotating state in the process of climbing the stairs of the stair climbing vehicle, the inner rotary disc 9 and the outer rotary disc 13 are triangular, and the three sides of the triangle may touch the edges of stairs or steps, so that the normal operation of the stair climbing vehicle is influenced, and even the stair climbing work cannot be finished.

Each corner of the inner rotating disc 9 and the outer rotating disc 13 is provided with a strip-shaped hole 23 along the radial direction, two ends of the wheel shaft 16 are respectively positioned in the two corresponding strip-shaped holes 23 on the inner rotating disc 9 and the outer rotating disc 13, the position of the wheel shaft 16 in the strip-shaped holes 23 can be adjusted as required, so that the distance between the two idler wheels 18 is changed, and when the stair climbing trolley is actually used, the distance between the idler wheels 18 can be adjusted according to the height of a stair, a step or an obstacle, so that the applicability of the climbing trolley is greatly improved.

Claims

1. The utility model provides an automatic running gear of stair climbing car, includes rear-axle housing (1) and sets up the drive mechanism in rear-axle housing (1), and the power input end of rear-axle housing (1) is connected with drive shaft (2), and drive shaft (2) are connected with the drive mechanism transmission, its characterized in that: the bilateral symmetry of rear-axle housing (1) is provided with two half-bridge subassemblies, the half-bridge subassembly includes sleeve pipe (3) and sets up semi-axis (4) in sleeve pipe (3), the one end and the drive mechanism transmission of semi-axis (4) are connected, and the other end stretches out the outside of sleeve pipe (3), be connected with support frame (26) on sleeve pipe (3), the one end of sleeve pipe (3) is passed through the flange and is connected with rear-axle housing (1), and the other end is provided with bearing housing (5), is provided with first bearing (6) in bearing housing (5), is provided with bearing clamp plate (7) on semi-axis (4) in first bearing (6) outside, is connected through clamp plate bolt (8) between the tip of bearing clamp plate (7) and bearing housing (5), inner rotating disk (9), first gear (10), second gear (11) have set gradually on semi-axis (4) in bearing clamp plate (7) outside, The end part of the half shaft (4) is provided with threads matched with the half shaft bolt (14), bushings (15) are arranged on the half shaft (4) between the bearing pressure plate (7) and the inner turnplate (9), between the inner turnplate (9) and the first gear (10), between the first gear (10) and the second gear (11), between the second gear (11) and the third gear (12), between the third gear (12) and the outer turnplate (13) and between the outer turnplate (13) and the half shaft bolt (14), the first gear (10), the second gear (11) and the third gear (12) have the same structural size, the first gear (10), the second gear (11) and the third gear (12) are fixedly connected with the half shaft (4), and bearing seats (24) are arranged inside the inner turnplate (9) and the outer turnplate (13), a second bearing (25) is installed in the bearing seat (24), the inner rotary disc (9) and the outer rotary disc (13) are of a triangular structure which is symmetrically arranged, 1 rotating wheel assembly is respectively arranged at 3 corners between the inner rotary disc (9) and the outer rotary disc (13), 120-degree included angles are formed between the 3 rotating wheel assemblies respectively, each rotating wheel assembly comprises a wheel shaft (16), a chain wheel (17) and a roller (18), two ends of the wheel shaft (16) are fixedly connected with the inner rotary disc (9) and the outer rotary disc (13) respectively, the chain wheels (17) are fixedly installed on one side of the roller (18), a third bearing (27) is installed between an inner ring of the roller (18) and the wheel shaft (16), the chain wheels (17) of the 3 rotating wheel assemblies are connected with the first gear (10), the second gear (11) and the third gear (12) through chains (19), and the gear number ratio of the teeth of the first gear (10), the second gear (11) and the third gear (12) to the tooth number of the chain wheels (17) is greater than 2.

2. The running mechanism of the automatic stair climbing vehicle according to claim 1, wherein the first gear (10), the second gear (11), the third gear (12) and the half shaft (4) are connected in a key connection mode.

3. The traveling mechanism of the automatic stair climbing vehicle according to claim 1, wherein a shaft brake disc (20) is arranged on the half shaft (4) between the bearing pressure plate (7) and the inner rotary disc (9), and the shaft brake disc (20) is connected with the half shaft (4) in a key connection mode.

4. The running mechanism of the automatic stair climbing vehicle according to claim 1, wherein a turntable brake disc (21) is arranged on the half shaft (4) between the bearing pressure plate (7) and the inner rotary disc (9), and the turntable brake disc (21) is fixedly connected with the inner rotary disc (9).

5. The running mechanism of the automatic stair climbing vehicle as claimed in claim 1, wherein the middle parts of three sides of the inner rotating disc (9) and the outer rotating disc (13) are respectively provided with an arc-shaped groove (22).

6. The traveling mechanism of an automatic stair climbing vehicle as claimed in claim 1, wherein a strip-shaped hole (23) is formed at each corner of the inner turntable (9) and the outer turntable (13) in the radial direction, and two ends of the wheel shaft (16) are respectively located in two corresponding strip-shaped holes (23) on the inner turntable (9) and the outer turntable (13).