CN112648316B

CN112648316B - Multi-angle limiting safety protection device

Info

Publication number: CN112648316B
Application number: CN201910970505.3A
Authority: CN
Inventors: 肖小刚; 罗小兵; 霍国亮; 熊宇峰
Original assignee: Jiujiang Precision Measuring Technology Research Institute
Current assignee: Jiujiang Precision Measuring Technology Research Institute
Priority date: 2019-10-13
Filing date: 2019-10-13
Publication date: 2024-10-29
Anticipated expiration: 2039-10-13
Also published as: CN112648316A

Abstract

The present invention provides a multi angle limit safety protection device, comprising a ratchet, an installation seat, a rotating shaft, and a cross roller bearing; The cross roller bearing is fixed with screws to the outer ring of the bearing in the mounting seat, and the rotating shaft and ratchet are fixed with screws to the inner ring of the cross roller bearing; Under the ratchet wheel, there are two grooves in the installation seat, each for placing claw one. A limited position component one and a limited position component two are located on the small teeth on the left side of the ratchet wheel. During operation, adjusting the protruding ends of the collision ring one and the collision ring two can press the claw one contact end into the groove, and the braking end protrudes and clips into the large teeth of the ratchet wheel, achieving safety limit protection. Adjusting limit components one and two counterclockwise and clockwise respectively can meet the requirements of multi angle limit safety protection.

Description

Multi-angle limiting safety protection device

Technical Field

The invention relates to a multi-angle limiting safety protection device

Background

In some slewing mechanism devices such as a turntable with large inertia unbalanced load, it is often necessary to limit the range of the rotation angle to a certain range. The cable is prevented from being twisted off in equipment, expensive load on the equipment and the like, which are caused by the reasons of 'galloping' or power failure and the like.

At present, mechanical safety limit on rotary equipment such as a rotary table is generally arranged on a frame body and a rotary shaft at a fixed angle according to specific conditions during design. The mode has the advantages of general type difference, easy limitation of installation space, poor adjustment and the like

Disclosure of Invention

The invention aims to provide a multi-angle limiting safety protection device which has the advantages of compact structure, high reliability, adjustable limiting angle, good universality, modularization standardized production and contribution to large-scale popularization and utilization.

The technical proposal adopted for realizing the aim comprises a ratchet wheel, a mounting seat, a rotating shaft and a crossed roller bearing; the crossed roller bearing fixes the bearing outer ring in the mounting seat through a screw, and the rotating shaft is fixed with the right side of the crossed roller bearing inner ring through a screw; the ratchet wheel is fixed with the left side of the inner ring of the crossed roller bearing through a screw; two grooves are arranged in the mounting seat below the ratchet wheel, a first claw is respectively placed, and the first claw is connected with the mounting seat through a first hinge; a pressed conical spring is arranged between the claw I and the mounting seat; the ratchet wheel passes through the first limiting component and is limited to form a second component, the second limiting component and the left step of the ratchet wheel form a rotating pair, and the first limiting component and the left step of the second limiting component rotate pairs; the end cover is arranged at the left side of the ratchet wheel through a screw the end face and the compression limit are the first component.

The first limiting component comprises a first adjusting striker, a second claw, a first spring, a second hinge and a first locking pin, a groove is formed in the inner side of the first adjusting striker, the second claw is connected with the first adjusting striker through the second hinge, and a tension spring is arranged between the second claw and the adjusting ring; the first locking pin penetrates through the pin holes of the first adjusting ring and the second claw.

The second limiting component comprises a second adjusting striker, a third claw, a second spring, a third hinge and a second locking pin, and is similar to the first limiting component in structure except that the third claw and the second claw are opposite in direction.

Compared with the prior art, the invention has the advantages and beneficial effects that:

1. The invention has compact structure, convenient installation and good universality;

2. the invention has high safety and reliability, can be modularized and serialized, is produced and is beneficial to large-scale popularization;

3. the limiting angle of the invention can be adjusted, and the limiting angle range can be adjusted by adjusting the first counter-clockwise adjusting component and the second clockwise adjusting component.

Drawings

FIG. 1 is an explosion schematic diagram of a limit safety device of the present invention

FIG. 2 is a cross-sectional view of the spacing device

FIG. 3 is a schematic view of a spacing assembly

FIG. 4 is a schematic diagram of a limiting assembly

In the figure, an end cover 1, a first limiting component 2, a second limiting component 3, a ratchet wheel 4, a mounting seat 5, a rotating shaft 6, a crossed roller bearing 7, a first claw 8, a first hinge 9, a conical spring 10, a first adjusting striker 11, a second claw 12, a first locking pin 13, a second hinge 14, a first spring 15, a second adjusting striker 16, a third claw 17, a second locking pin 18, a third hinge 19 and a spring 20 are arranged.

Detailed Description

The invention will be further described with reference to examples and with reference to the accompanying drawings.

As shown in fig. 1-2, the multi-angle limiting safety device provided by the invention comprises a ratchet wheel 4, a mounting seat 5, a rotating shaft 6 and a crossed roller bearing 7, wherein the crossed roller bearing 7 is fixed in the mounting seat 5 through a screw to fix the outer ring of the bearing, and the rotating shaft 6 is fixed on the right side of the inner ring of the crossed roller bearing 7 through a screw; the ratchet wheel 4 is fixed with the left side of the inner ring of the crossed roller bearing 7 through screws; two grooves are arranged in the mounting seat 5 below the ratchet wheel 4, a claw I8 is respectively arranged in the grooves, and the claw I8 is connected with the mounting seat through a hinge I9; a pressed conical spring 10 is arranged between the trigger end of the claw I8 and the mounting seat, and under the action of the conical spring 10, the brake end of the claw I8 is hidden in the groove of the mounting seat 5, and the trigger end of the claw I8 protrudes out of the groove but avoids the big tooth on the right side of the ratchet wheel 4; the ratchet wheel 4 passes through the first limiting component 2 and the second limiting component 3, the second limiting component 3 and the left side step of the ratchet wheel 4 form a rotating pair, and the first limiting component 2 and the left side step of the second limiting component 3 form a rotating pair;

The first limiting component 2 comprises a first adjusting striker 11, a second claw 12, a first spring 15, a second hinge 14 and a first locking pin 13, wherein the second claw 12 is connected in a groove at the inner side of the first adjusting striker 11 through the second hinge 14, the second claw 12 protrudes out of the groove under the tensile force of the first spring 15 and is pressed on a small tooth at the left side of the ratchet wheel 4, and the first limiting component can only rotate anticlockwise relative to the ratchet wheel 4; the second claw 12 and the first adjusting striker 11 are provided with pin holes, when the second claw 12 is clamped into the small tooth space on the left side of the ratchet wheel 4, the second claw 12 is overlapped with the pin holes on the first adjusting striker 11, the locking pin 13 is inserted into the pin holes, and the position between the first limiting component 2 and the ratchet wheel 4 is locked.

The second limiting component 3 comprises a second adjusting striker 16, a third claw 17, a second spring 20, a third hinge 19 and a second locking pin 18, the structure of the second limiting component is similar to that of the first limiting component 2, the third claw 17 and the second claw 12 face opposite, the second limiting component 3 can only rotate clockwise relative to the ratchet wheel 4 under the action of the pulling force of the second spring 20 and are pressed on small teeth on the left side of the ratchet wheel 4 in a rotating mode.

When the limiting angle is adjusted, the limiting safety protection device firstly adjusts the second limiting component 3 clockwise to a corresponding angle, when the third claw 17 is clamped between small teeth on the left side of the ratchet wheel 4, the second locking pin 18 is inserted into the pin hole for locking, then adjusts the first limiting component 2 anticlockwise to a corresponding angle, and after the locking pin 13 is inserted into the pin hole for locking, the end cover 1 is installed on the left end face of the ratchet wheel 4 through a screw, and the first limiting component 2 and the second limiting component 3 are axially fixed.

When the rotary table or the slewing mechanism works, the rotating shaft 6 drives the ratchet wheel 4, the first limiting component 2 and the second limiting component 3 to correspondingly rotate, and when the rotary table or the slewing mechanism rotates to a limiting angle, the first limiting ring 11 or the second limiting ring 16 is adjusted to have the protruding end pushed down by the moment of the rotating shaft 6, the first claw 8 is rotated around the first hinge 9, the first claw 8 protrudes out of the groove and is clamped into a large tooth space of the ratchet wheel 4, so that a braking protection effect is achieved. After the hidden trouble is eliminated, the turntable or the slewing mechanism is restarted and runs in the opposite direction, and under the action of the big teeth of the ratchet wheel 4 and the lower conical spring 10 at the triggering end of the claw I8, the braking end of the claw I8 is hidden in the groove again.

The foregoing embodiments are merely illustrative of the present invention, and the structures and connection manners of the components may be changed, and equivalent changes and modifications on the basis of the present invention should not be excluded from the protection of the present invention.

Claims

1. A multi-angle limit safety protection device comprises a ratchet wheel, a mounting seat, a rotating shaft and a crossed roller bearing; the crossed roller bearing fixes the bearing outer ring in the mounting seat through a screw, and the rotating shaft is fixed with the right side of the crossed roller bearing inner ring through a screw; the ratchet wheel is fixed with the left side of the inner ring of the crossed roller bearing through a screw; two grooves are formed in the mounting seat below the ratchet wheel, and the first claw is respectively placed, and the ratchet wheel is characterized in that the trigger end of the first claw is arranged below the small teeth of the ratchet wheel, the brake end of the first claw is arranged below the large teeth of the ratchet wheel, and the first claw is connected with the mounting seat through a hinge; under the action of the pressed conical spring, the first trigger end of the claw protrudes out of the groove, and the first brake end of the claw is buried in the groove; a first limiting component and a second limiting component are arranged at the small tooth on the left side of the ratchet wheel, the second limiting component and the step on the left side of the ratchet wheel form a rotating pair, and the first limiting component and the step on the left side of the second limiting component form a rotating pair; the end cover is arranged on the left end face of the ratchet wheel through a screw and is tightly pressed to form a first component;

The first limiting component comprises a first adjusting striker, a second claw, a first spring, a second hinge and a first locking pin, a groove is formed in the inner side of the first adjusting striker, the second claw is connected with the first adjusting striker through the second hinge, and the second claw is pressed on the ratchet pinion in a rightward rotating mode under the action of the tension spring; when the second claw is clamped between the small teeth, the first locking pin penetrates through the first adjusting ring and the second claw pin hole;

2. The multi-angle limiting safety protection device of claim 1, wherein: the first limiting component can adjust the limiting angle anticlockwise, the second limiting component can adjust the limiting angle clockwise, the first trigger end of the claw can be pressed into the groove by adjusting the protruding end of the first striker and the protruding end of the second striker, and the braking end protrudes out to be clamped into a large tooth of the ratchet wheel, so that the safety limiting protection effect is realized.