CN215794130U

CN215794130U - Tensioning mechanism capable of automatically positioning

Info

Publication number: CN215794130U
Application number: CN202121920287.1U
Authority: CN
Inventors: 刘清林; 陈敏; 曹灿良
Original assignee: Hengyang Huayi Machinery Co ltd
Current assignee: Hengyang Huayi Machinery Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-02-11
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a tensioning mechanism capable of automatically positioning, relates to the field of tensioning mechanisms, and aims to solve the problems of complex operation and large error of the conventional manual rubber track adjustment. The device is novel in structure, simple in structure, quick in reaction and accurate and stable in tensioning force, and effectively solves the problems that manual adjustment of the rubber track is complicated in operation and large in error.

Description

Tensioning mechanism capable of automatically positioning

Technical Field

The utility model relates to the field of tensioning mechanisms, in particular to a tensioning mechanism capable of automatically positioning.

Background

The crawler is a traveling device with high passing performance, which is commonly seen in engineering vehicles such as excavators, tanks and the like or military vehicles, and has a large contact area with the ground, so that the pressure of the vehicles to the ground is reduced, the vehicles are not easy to slip and sink, the climbing performance of the vehicles is improved, the metal crawler has high strength, common hard obstacles are difficult to damage the crawler, but the defects of the crawler are obvious, the vibration is large when the vehicles pass through a hard road surface, the vehicles can only travel at low speed, the vibration is large and the vehicles fall off when the vehicles travel at high speed, but the manufacturing materials of the crawler are not limited to metal, for small robots with small use strength and good working environment, the use of rubber materials to replace metal is a better choice, and the rubber crawler allows high traveling speed.

The existing rubber track is widely applied to small-sized mobile equipment, but the tensioning force of the rubber track needs to be adjusted manually, the manual adjustment operation is complex, the error is large, and the rubber track cannot work conveniently, so that the tensioning mechanism capable of automatically positioning is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The tensioning mechanism capable of automatically positioning provided by the utility model solves the problems of complicated operation and large error in manual adjustment of the rubber track.

In order to achieve the purpose, the utility model adopts the following technical scheme: the tensioning mechanism comprises a track, wherein front wheels and rear wheels are sleeved at two ends of the track in a matched mode respectively, the front wheels and the rear wheels are symmetrically distributed in the width direction of the track, wheel shafts are hinged between the front wheels and symmetrically distributed in the track, the rear wheels and the wheel shafts are fixedly sleeved, the wheel shafts are parallel to each other, long shafts are fixedly connected to two sides, close to each other, of the two wheel shafts and are horizontal, the long shafts and the wheel shafts are perpendicular to each other, first hinge seats are fixedly connected to two ends, close to each other, of the two long shafts, connecting rods are hinged to two ends, close to each other, of the first hinge seats, and second hinge seats are hinged to two groups of connecting rods.

Preferably, the top of the long shafts is fixedly connected with a short shaft, a sliding rod and a sleeve are fixedly connected between the short shafts respectively, the sleeve and the sliding rod are both horizontal, a spring is installed at one end, close to the sleeve, of the sliding rod, and the spring and the sliding rod are both in sliding sleeve connection with the sleeve.

Preferably, the second hinged seat and the two groups of connecting rods are symmetrically distributed in the width direction of the crawler belt, and the connecting rods are horizontal.

Preferably, two sets of the second hinged seat is provided with a threaded hole, the threaded holes are perpendicular to the long shaft, the rotating directions of the threaded holes are opposite, and the threaded holes are internally connected with screws in a matching threaded manner.

Preferably, the two ends of the screw rod are symmetrically distributed about the two groups of second hinge seats, a motor is installed at one end of the screw rod in a matched mode, an output shaft of the motor is coaxial with the screw rod, and the screw rod is fixedly connected with the output shaft of the motor.

The utility model has the beneficial effects that:

1. the device passes through motor drive screw rod and rotates, and the screw thread at screw rod both ends is revolved to opposite for two sets of articulated seats of second are close to each other when the screw rod is rotatory, and the reversal is kept away from each other promptly, replaces the manual operation the device through this mechanical transmission, and is continuous, quick and more accurate.

2. The device leads to two sets of articulated seats of second and keeps away from or be close to each other for the contained angle between two sets of connecting rods increases or reduces, thereby makes two sets of first articulated seats pushed away or drawn close, and then the wheel track of control front wheel and rear wheel, thereby realizes the installation and the tensioning of track.

3. Two groups of second hinged seats are driven by the motor to be close to each other until the contact stops, at the moment, two groups of connecting rods cross the parallel point, two ends, close to each other, of the two groups of connecting rods are in a converging shape, and at the moment, the two groups of second hinged seats are mutually locked through symmetrical thread structures, so that the tensioning is stable.

4. The device keeps the device stable in structure through the sleeve connection of the sleeve and the sliding rod, and the tightening force of part of the crawler belt is offset through the spring, so that the working load of the motor is reduced.

To sum up, the device simple structure, the reaction is quick and the tensioning dynamics is accurate stable, the effectual problem of having solved artifical adjustment rubber track complex operation and error great.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a structural sectional view of the present invention.

Fig. 3 is an assembly view of the positioning mechanism of the present invention.

Reference numbers in the figures: 1. a crawler belt; 2. a front wheel; 3. a rear wheel; 4. a wheel axle; 5. a long axis; 6. a minor axis; 7. a slide bar; 8. a spring; 9. a sleeve; 10. a first hinge mount; 11. a connecting rod; 12. a second hinge mount; 13. a screw; 14. an electric motor.

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.

Referring to fig. 1-3, a tensioning mechanism capable of automatically positioning comprises a track 1, wherein two ends of the track 1 are respectively sleeved with a front wheel 2 and a rear wheel 3 in a matching manner, the front wheel 2 and the rear wheel 3 are symmetrically distributed about the width direction of the track 1, wheel shafts 4 are hinged between the front wheels 2, the wheel shafts 4 are symmetrically distributed about the track 1, two groups of rear wheels 3 are fixedly sleeved with the wheel shafts 4, the two groups of wheel shafts 4 are parallel to each other, two sides of the two groups of wheel shafts 4 close to each other are fixedly connected with long shafts 5, the long shafts 5 are horizontal, the long shafts 5 and the wheel shafts 4 are perpendicular to each other, two ends of the two groups of long shafts 5 close to each other are fixedly connected with first hinge seats 10, two ends of the two groups of first hinge seats 10 close to each other are hinged with connecting rods 11, and a second hinge seat 12 is hinged between the two groups of connecting rods 11, the top ends of the two groups of long shafts 5 are fixedly connected with short shafts 6, a sliding rod 7 and a sleeve 9 are fixedly connected between the short shafts 6 respectively, the sleeve 9 and the sliding rod 7 are both in a horizontal shape, one end, close to the sleeve 9, of the sliding rod 7 is provided with a spring 8, the spring 8 and the sliding rod 7 are both in sliding sleeve connection with the sleeve 9, the second hinged seat 12 and the two groups of connecting rods 11 are both symmetrically distributed in relation to the width direction of the crawler 1, the connecting rods 11 are both in a horizontal shape, the two groups of second hinged seats 12 are both provided with threaded holes, the two groups of threaded holes and the long shafts 5 are in mutually perpendicular shapes, the rotating directions of the two groups of threaded holes are opposite, the two groups of threaded holes are internally and in matching threaded connection with screw rods 13, two ends of the screw rods 13 are symmetrically distributed in relation to the two groups of second hinged seats 12, one end of the screw rods 13 is provided with a motor 14 in matching mode, and an output shaft of the motor 14 is coaxial with the screw rods 13, and the screw 13 is fixedly connected with an output shaft of the motor 14.

The working principle is as follows: the working process of the device is that a motor 14 is started, the motor 14 drives a screw 13 to rotate, the thread turning directions at two ends of the screw 13 are opposite, so that two groups of second hinging seats 12 are close to each other when the screw 13 rotates, and the screw is turned backwards, namely, away from each other, when the two groups of second hinging seats 12 are away from each other, the included angle between two groups of connecting rods 11 at two ends of the second hinging seats 12 is reduced, so that the two groups of first hinging seats 10 are pulled close, and a long shaft 5 is driven by the first hinging seats 10, so that the wheel space of a front wheel 2 and a rear wheel 3 is reduced, at the moment, the crawler 1 is conveniently disassembled and assembled, and when the two groups of second hinging seats 12 are close to each other, the two groups of first hinging seats 10 are pushed away by the connecting rods 11, so that the wheel space is increased to gradually tension the crawler 1;

the two groups of second hinged seats 12 are driven by the motor 14 to mutually approach until the contact stops, at the moment, the two groups of connecting rods 11 cross a parallel point, the two mutually approaching ends of the two groups of connecting rods 11 are in a convergent shape, at the moment, the two groups of second hinged seats 12 are mutually locked by a symmetrical thread structure, the device keeps the structure stability of the device through the sleeve 9 and the sliding rod 7, the tightening force of part of the crawler 1 is counteracted through the spring 8, and the working load of the motor 14 is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A tensioning mechanism capable of automatically positioning comprises a track (1) and is characterized in that two ends of the track (1) are respectively sleeved with a front wheel (2) and a rear wheel (3) in a matched mode, the front wheel (2) and the rear wheel (3) are symmetrically distributed relative to the width direction of the track (1), wheel shafts (4) are hinged between the front wheels (2), the wheel shafts (4) are symmetrically distributed relative to the track (1), the two groups of rear wheels (3) are fixedly sleeved with the wheel shafts (4), the two groups of wheel shafts (4) are parallel to each other, two sides, close to each other, of the two groups of wheel shafts (4) are fixedly connected with long shafts (5), the long shafts (5) are horizontal, the long shafts (5) and the wheel shafts (4) are perpendicular to each other, two ends, close to each other, of the two groups of long shafts (5) are fixedly connected with first seats (10), two ends of the first hinge seats (10) which are close to each other are hinged with connecting rods (11), and a second hinge seat (12) is hinged between the two groups of the connecting rods (11).

2. The tensioning mechanism capable of automatically positioning according to claim 1, wherein a short shaft (6) is fixedly connected to the top ends of two groups of long shafts (5), a slide rod (7) and a sleeve (9) are respectively fixedly connected between the short shafts (6), the sleeve (9) and the slide rod (7) are both horizontal, a spring (8) is installed at one end of the slide rod (7) close to the sleeve (9), and the spring (8) and the slide rod (7) are both slidably sleeved with the sleeve (9).

3. An automatically positionable tensioning mechanism according to claim 1, characterized in that the second articulated seat (12) and the two sets of connecting rods (11) are symmetrically distributed about the width direction of the track (1) and the connecting rods (11) are horizontal.

4. The tensioning mechanism capable of automatically positioning according to claim 1, wherein two sets of the second hinged seats (12) are provided with threaded holes, the two sets of the threaded holes are perpendicular to the long shaft (5), the rotation directions of the two sets of the threaded holes are opposite, and the two sets of the threaded holes are internally connected with screws (13) in matching threads.

5. The tensioning mechanism capable of automatically positioning according to claim 4, wherein two ends of the screw (13) are symmetrically distributed about two sets of second hinged seats (12), one end of the screw (13) is provided with a motor (14) in a matching manner, an output shaft of the motor (14) is coaxial with the screw (13), and the screw (13) is fixedly connected with an output shaft of the motor (14).