CN110723223A - Crawler walking switching mechanism and rehabilitation vehicle - Google Patents

Crawler walking switching mechanism and rehabilitation vehicle Download PDF

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Publication number
CN110723223A
CN110723223A CN201911079595.3A CN201911079595A CN110723223A CN 110723223 A CN110723223 A CN 110723223A CN 201911079595 A CN201911079595 A CN 201911079595A CN 110723223 A CN110723223 A CN 110723223A
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CN
China
Prior art keywords
walking
crawler
switching device
switching mechanism
frame body
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Pending
Application number
CN201911079595.3A
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Chinese (zh)
Inventor
陈传东
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Changzhou Kedong Vehicle Equipment Factory
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Changzhou Kedong Vehicle Equipment Factory
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Publication date
Application filed by Changzhou Kedong Vehicle Equipment Factory filed Critical Changzhou Kedong Vehicle Equipment Factory
Priority to CN201911079595.3A priority Critical patent/CN110723223A/en
Publication of CN110723223A publication Critical patent/CN110723223A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/04—Endless track vehicles with tracks and alternative ground wheels, e.g. changeable from endless track vehicle into wheeled vehicle and vice versa
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
    • A61G5/061—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps for climbing stairs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
    • A61G5/066—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps with endless belts

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Rehabilitation Tools (AREA)

Abstract

The invention relates to a crawler walking switching mechanism, which provides a solution for switching a wheeled rehabilitation vehicle into a crawler crawling ladder: the crawler switching mechanism comprises a vehicle body framework, a walking crawler system, a front walking switching device, a rear walking switching device and a downhill speed reducing mechanism; the walking switching device is provided with a sliding track for supporting the walking crawler system; the walking switching device comprises a worm gear transmission mechanism driven by a motor; the downhill speed reducing mechanism comprises a mounting plate, a worm and gear transmission mechanism, an air cylinder, a connecting plate and a supporting pulley; the walking crawler frame body is provided with a sliding block which is used for sliding up and down in a sliding track of the walking switching device. The invention adds a crawler traveling switching mechanism for the traditional wheel type rehabilitation vehicle, and has simple structure and high reliability.

Description

Crawler walking switching mechanism and rehabilitation vehicle
Technical Field
The invention relates to a crawler traveling switching mechanism, in particular to a crawler traveling switching mechanism for a rehabilitation vehicle.
Background
The rehabilitation vehicle is designed for pushing patients conveniently, and most rehabilitation vehicles move by walking on wheels. And many hospitals do not have the elevator, and the rehabilitation vehicle needs to go up and down stairs with the help of manpower, and the requirement of going up and down stairs automatically can not be satisfied to general mobilizable rehabilitation vehicle.
Disclosure of Invention
The invention provides a crawler traveling switching mechanism, which solves the problem that a wheeled rehabilitation vehicle in the background technology cannot automatically go up and down stairs.
In order to achieve the purpose, the invention provides the following technical scheme:
the crawler traveling switching mechanism comprises a vehicle body framework; a walking crawler system arranged inside the vehicle body framework; the walking switching device is used for supporting the front crawler wheels of the walking crawler system; the rear walking switching device is used for supporting the rear crawler wheels of the walking crawler system; one end of the front walking switching device is arranged in the vehicle body framework, the other end of the front walking switching device is connected with the vehicle body framework and the walking crawler system through a worm; the rear walking switching device is connected with the vehicle body framework and the walking crawler system through a worm; the car body framework is connected to the middle position of the front walking switching device and the rear walking switching device.
The walking crawler system comprises a walking crawler frame body, a walking crawler arranged in the walking crawler frame body, a tensioning wheel arranged on the walking crawler frame body, and a front crawler wheel arranged on the inner side of the walking crawler and connected to the walking crawler frame body through a transmission shaft;
a rear crawler wheel which is arranged at the inner side of the walking crawler and is connected with the walking crawler frame body through a transmission shaft,
and the supporting wheels are positioned on the inner side of the bottom of the walking crawler and are arranged on the walking crawler frame body.
The front walking switching device is provided with 1 group of symmetrical sliding tracks for supporting the front wheels of the walking crawler system at two sides of the walking direction.
The rear walking switching device is provided with 1 group of symmetrical sliding tracks for supporting the rear wheels of the walking crawler system at two sides of the walking direction.
The front walking switching device and the rear walking switching device both comprise a group of worm and gear transmission mechanisms driven by a motor.
The downhill speed reducing mechanism comprises an installation plate, a worm and gear transmission mechanism which is arranged on the installation plate and driven by a motor, a group of cylinders connected to the air cylinder on the installation plate, a connection plate connected with a piston rod of the air cylinder, and 2 supporting pulleys arranged below the connection plate.
The walking crawler frame body is provided with 1 group of sliding blocks which are arranged at the front part and used for sliding up and down in a sliding track of the front walking switching device.
The rear part of the walking crawler frame body is provided with 1 group of sliding blocks which are used for sliding up and down in a sliding track of the walking switching device.
A rehabilitation vehicle comprises the crawler travel switching mechanism.
Drawings
FIG. 1 is a schematic view of a crawler traveling switching mechanism and a rehabilitation vehicle
FIG. 2 is a schematic view of the front-back travel switching device connecting the car body frame
FIG. 3 is a schematic view of the connection structure of the downhill decelerating mechanism and the traveling crawler system
FIG. 4 is a schematic structural view of a track roller set of the walking track system
FIG. 5 is a schematic view of the structure of the walking track frame and the front and rear sliding blocks of the frame
FIG. 6 is a schematic structural view of a downhill decelerating mechanism
FIG. 7 is a schematic structural diagram of a front walking switching device
FIG. 8 is a schematic structural view of a rear-walking switching device
In the figure, 100-body frame; 200-a walking track system; 201-a walking crawler frame body; 202-a walking track; 203-a tensioner; 204-front track wheels; 205-rear track wheels; 206 support wheels; 211-a slider; 202-a slide block; 300-front walking switching device; 301-frame body; 302-worm gear; 303-a sliding track; 400-rear walking switching device; 401-a frame body; 402-worm gear drive; 403-a sliding track; 500-downhill retarding mechanism; 501-mounting a plate; 502-worm gear drive; 503-a cylinder; 504-a connection plate; 505-support the pulley.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: as shown in fig. 1, 100 is a vehicle body frame, 200 is a walking crawler system, 300 is a front walking switching device, and 400 is a rear walking switching device.
In practical production application, the crawler traveling switching mechanism can be suitable for various devices such as wheelchairs, children's cars and the like, and is particularly suitable for wheeled rehabilitation vehicles in hospitals.
As shown in fig. 1, the utility model relates to a rehabilitation vehicle with crawler travel switching mechanism: the rehabilitation vehicle can realize the use of wheels when walking on the flat ground, automatically support the front and rear wheels of the crawler wheel through the front and rear walking switching mechanism when climbing stairs, and drive the worm to support the crawler wheel through the front and rear motors.
The specific implementation process comprises the following steps: as shown in fig. 1 and 2, before the rehabilitation vehicle climbs the ladder, the rehabilitation vehicle needs to be switched from the wheel walking mode to the crawler walking mode by the walking switching mechanism. Here, the rehabilitation vehicle also comprises a set of control system, the control system sends out instructions, outputs signals to the motor of the front and back walking switching mechanism, starts the motor and drives the worm and gear to move. At the moment, the worm connected with the crawler traveling support moves downwards to convey the front part and the rear part of the crawler traveling system downwards, and the crawler starts to contact the ground from a suspended state; the worm continues downwards, then the track traveling system can prop up the rehabilitation vehicle, and the wheel system of the rehabilitation vehicle is unsettled this moment, correctly switches to and fulfills walking or cat ladder mode.
When the rehabilitation vehicle goes down stairs in a crawler traveling mode, in order to prevent the speed from being too high, the invention designs a set of speed reducing mechanism, and the specific implementation process and the principle are as follows:
as shown in fig. 3 and 6, the downhill speed reduction mechanism 500 includes a mounting plate 501, a worm gear transmission 502 mounted on the mounting plate 501 and driven by a motor, a group of cylinders 503 having cylinders connected to the mounting plate 501, a connecting plate 504 connected to a piston rod of the cylinders 503, and 2 support pulleys 505 mounted below the connecting plate 504.
When the crawler walking system is used for going down stairs, the worm gear and worm transmission mechanism (502) driven by the motor starts to act, the worm is connected to the connecting plate (504), the worm is extended at the moment, the supporting pulley (505) gradually contacts the ground in a suspended state, the ground generates a reaction force to the frame, and the whole rehabilitation vehicle utilizes the reaction force to achieve the aim of reducing the speed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (9)

1. The crawler belt running switching mechanism comprises
A vehicle body frame (100);
a traveling crawler system (200) installed inside the vehicle body frame (100);
a front walking switching device (300) for supporting the front crawler wheels of the walking crawler system (200);
a rear travel switching device (400) for supporting the rear crawler wheels of the traveling crawler system (200);
a downhill deceleration mechanism (500) connected with the walking switching device (400),
the method is characterized in that:
the front walking switching device (300) is connected with the vehicle body framework (100) and the walking crawler system (200) through a worm;
the rear walking switching device (400) is connected with the vehicle body framework (100) and the walking crawler system (200) through a worm;
the vehicle body framework (100) is connected to the middle positions of the front walking switching device (300) and the rear walking switching device (400).
2. The crawler travel switching mechanism according to claim 1, wherein:
the walking crawler system (200) comprises a walking crawler frame body (201),
a walking crawler (202) arranged in the walking crawler frame body (201),
a tension wheel (203) arranged on the walking track frame body,
a front crawler wheel (204) which is arranged at the inner side of the walking crawler (202) and is connected with the walking crawler frame body (201) through a transmission shaft,
a rear crawler wheel (205) which is arranged at the inner side of the walking crawler (202) and is connected with the walking crawler frame body (201) through a transmission shaft,
and the supporting wheels (206) are positioned on the inner side of the bottom of the walking crawler (202) and are installed on the walking crawler frame body (201).
3. The crawler travel switching mechanism according to claim 1, wherein:
the front walking switching device (300) is provided with 1 group of symmetrical sliding tracks (303) for supporting the front wheels of the walking crawler system (200) at two sides in the walking direction.
4. The crawler travel switching mechanism according to claim 1, wherein:
the rear walking switching device (400) is provided with 1 group of symmetrical sliding tracks (403) which are used for supporting the rear wheels of the walking crawler system (200) at two sides in the walking direction.
5. The crawler travel switching mechanism according to claim 1, wherein:
the front walking switching device (300) and the rear walking switching device (400) both comprise a group of worm and gear transmission mechanisms driven by a motor.
6. The crawler travel switching mechanism according to claim 1, wherein:
the downhill decelerating mechanism (500) comprises
A mounting plate (501),
a worm and gear transmission mechanism (502) which is arranged on the mounting plate (501) and is driven by a motor,
a group of cylinders (503) connected with the mounting plate (501),
a connecting plate (504) connected with a piston rod of the air cylinder (503),
2 supporting pulleys (505) arranged below the connecting plate (504).
7. The crawler travel switching mechanism according to claim 2, wherein:
the front part of the walking crawler frame body (201) is provided with 1 group of sliding blocks (211) which are used for sliding up and down in a sliding track (303) of the front walking switching device (300).
8. The crawler travel switching mechanism according to claim 2, wherein:
the rear part of the walking crawler frame body (201) is provided with 1 group of sliding blocks (212) which are used for sliding up and down in a sliding track (403) of the backward walking switching device (400).
9. A rehabilitation vehicle characterized by comprising the crawler travel switching mechanism according to any one of claims 1 to 8.
CN201911079595.3A 2019-11-07 2019-11-07 Crawler walking switching mechanism and rehabilitation vehicle Pending CN110723223A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911079595.3A CN110723223A (en) 2019-11-07 2019-11-07 Crawler walking switching mechanism and rehabilitation vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911079595.3A CN110723223A (en) 2019-11-07 2019-11-07 Crawler walking switching mechanism and rehabilitation vehicle

Publications (1)

Publication Number Publication Date
CN110723223A true CN110723223A (en) 2020-01-24

Family

ID=69224920

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911079595.3A Pending CN110723223A (en) 2019-11-07 2019-11-07 Crawler walking switching mechanism and rehabilitation vehicle

Country Status (1)

Country Link
CN (1) CN110723223A (en)

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