CN210419044U - Rotary self-locking device and bearing and guide disc - Google Patents

Abstract

The utility model provides a rotary self-locking device and a bearing guide disc, wherein the rotary self-locking device comprises a shell, an energy storage spring arranged in the shell, a pin shaft fixed on the shell and penetrating through the energy storage spring, and a self-locking assembly; this auto-lock subassembly includes: the bearing and guide device comprises a rotatable bearing and guide disc, a bearing and guide limiting part and a rolling body, wherein the bearing and guide limiting part is directly or indirectly fixedly connected with a shell. The bearing guide disc is provided with a curve bearing slide way which comprises an outer slide way, an inner slide way and a locking slide way communicated between the outer slide way and the inner slide way, the locking slide way is provided with a circuitous turning point, and the direction of the circuitous turning point is matched with the non-locking turning direction of the bearing guide disc; the bearing and guide limiting piece is provided with a linear bearing and guide slideway; the rolling bodies are accommodated in an accommodating space defined by the intersection of the curved guide slideway and the linear guide slideway; the outer slide is a circumferential outer slide, an end of the inner slide communicates with the outer slide, and communicating sections of the outer slide, the inner slide, and the locking slide are designed to subject the rolling bodies to a guiding force to a predetermined slide based on steering of the guide plate.

Description

Rotary self-locking device and bearing and guide disc

Technical Field

The utility model relates to an auxiliary hoisting apparatus especially relates to a rotatory self-lock device and hold guide disc.

Background

The existing circulating self-locking balancer in the market mostly uses a spring structure and is provided with a special-shaped movable part, so that circulating self-locking and unlocking are realized, and more parts are adopted. Fig. 1 shows an example of a structure of a conventional spring self-locking balancer, and fig. 1 shows the balancer which uses a spring 1, a hook 2, a swinging locking piece 3 and a pin 4 to realize circular self-locking. Through the above 4 parts, the impact in different orders is under the action of the spring, and the locking piece 3 and the hook 2 have different relative postures, so that the locking and loosening states are generated. Because the dead and state of pine of lock of this structure is because direct striking produces, especially the couple 2 striking lock plate 3 when locking, lock plate 3 transmits the impact again to round pin axle 4, leads to bearing great impact with the connecting piece of round pin axle 4 fixed to basement 5. The pin 4 and the base 5 are generally screwed or riveted, which causes wear of the hook 2, the locking plate 3, the pin 4 under violent operation between several times and several tens of times, and most importantly, deformation of the pin 4 and damage of the link between the pin 4 and the base 5, resulting in complete damage of the balancer.

Therefore, the existing self-locking structure of the structure not only adopts more parts, but also has the defects that the parts for self-locking are directly impacted mechanically, the anti-force operation capability is insufficient, and the service life is short.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present invention provide a rotational self-locking device and a guide disc in the rotational self-locking device to eliminate or improve one or more problems in the prior art.

The technical scheme of the utility model as follows:

the utility model provides a rotatory self-lock device, its include the casing, arrange the energy storage spring in the casing in, be fixed in on the casing and run through energy storage spring's round pin axle, self-lock device still includes:

the bearing guide disc can rotate, a curved bearing guide slideway is arranged on the bearing guide disc, the curved bearing guide slideway comprises an outer slideway, an inner slideway and a locking slideway communicated between the outer slideway and the inner slideway, the outer slideway is a circumferential outer slideway, the end part of the inner slideway is communicated with the outer slideway, the locking slideway is provided with a circuitous inflection point, and the direction of the circuitous corner formed at the circuitous inflection point is matched with the non-locking steering of the bearing guide disc;

the bearing and guide limiting part is relatively fixed and is provided with a linear bearing and guide slideway which is oppositely arranged with the curved bearing and guide slideway;

the rolling body is clamped between the bearing guide disc and the bearing guide limiting part and accommodated in an accommodating space defined by the intersection of the curve bearing guide slideway and the linear bearing guide slideway.

In one embodiment, the communicating section of the outer slide and the inner slide, the communicating section of the outer slide and the locking slide, and/or the communicating section of the inner slide and the locking slide are designed to have a guide portion that guides the rolling bodies to a predetermined slide according to a rotation direction of the guide disk.

In one embodiment, the inner slide way comprises a circumferential inner slide way and a communication slide way for communicating the circumferential inner slide way with the circumferential outer slide way, and the locking slide way is communicated between the circumferential outer slide way and the circumferential inner slide way.

In an embodiment, the curved guide sliding way has at least two sets of the locking sliding ways and at least two sets of the communication sliding ways, and the at least two sets of the locking sliding ways and the at least two sets of the communication sliding ways are respectively and evenly arranged between the circumferential outer sliding way and the circumferential inner sliding way.

In one embodiment, the circumferential outer ramp is substantially circular and the circumferential inner ramp is substantially circular or elliptical.

In one embodiment, the linear guide runner is in a radial direction of the guide disc, and a length of the linear guide runner is smaller than a radius of the guide disc.

In one embodiment, the rolling body is a rolling sphere or a rolling cylinder; the curve bearing and guiding slideway and the straight line bearing and guiding slideway are grooves.

In one embodiment, the guides of the communicating sections of the outer slide and the locking slide comprise: and the concave part is arranged on the circumferential outer slide way, is recessed towards the inner circumference from the position communicated with the locking slide way and is away from the turning point by a preset length.

In one embodiment, the guides of the communicating sections of the outer slide and the locking slide comprise: and the spiral slideway smoothly transits from the circumferential outer slideway to the circuitous inflection point.

In one embodiment, the guides of the communicating sections of the outer slide and the locking slide comprise: the guide bulge between the locking slide way and the fork opening of the circumferential outer slide way guides the rolling body to the locking slide way when the guide disc rotates along locking and steering.

In one embodiment, the locking slide is composed of a plurality of arc segments with different radiuses, and the guiding parts of the inner slide and the communication section of the locking slide comprise: and the starting arc extends to the inner slide way at the corner of the locking slide way, and is a perfect circular arc taking the pin shaft as the center of a circle.

In one embodiment, the guides of the communicating sections of the outer and inner runners comprise: the smooth arc of the connecting section guides the path of motion of the rolling bodies to the outer race when the guide disc rotates in the unlocked direction.

The invention also provides a bearing guide disc for the rotary self-locking device, wherein the bearing guide disc is provided with a curve bearing guide slideway, and the curve bearing guide slideway comprises an outer slideway, an inner slideway, a locking slideway and a smooth communication slideway, wherein the locking slideway is arranged between the outer slideway and the inner slideway and is communicated with the outer slideway and the inner slideway;

the outer slide way is a circumferential outer slide way, a circuitous inflection point is arranged on the locking slide way, and the direction of the circuitous corner formed at the circuitous inflection point is matched with the non-locking steering of the bearing disc.

The guide disc is used for synchronously rotating with a reel of the booster, and the guide disc is used for being matched with a guide limiting part of the booster, the guide limiting part is fixed on one side of a shell of the booster, which faces the guide disc, and is provided with a linear guide slideway which is arranged opposite to the curved guide slideway;

the curved guide slideway of the guide disc and the linear guide slideway of the guide limiting piece are intersected to define an accommodating space for accommodating the rolling body;

the communicating section of the outer and inner ramps, the communicating section of the outer and locking ramps and/or the communicating section of the inner and locking ramps are designed with guides that guide the rolling bodies to predetermined ramps according to the direction of rotation of the guide disk.

The embodiment of the utility model provides an in rotatory self-lock device adopt utilize the slide to carry out the structure of auto-lock for auto-lock part contact surface increases during the auto-lock, and shock resistance is better, and resistant violence operating capability is stronger, and spare part still less, and do not need additional linking mode, make the probability of damage littleer, improved the life of balancer greatly.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the following detailed description.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. For convenience in illustrating and describing some portions of the present invention, corresponding parts of the drawings may be exaggerated, i.e., may be larger, relative to other components in an exemplary device actually manufactured according to the present invention. In the drawings:

fig. 1 is a schematic view of a self-locking structure of a balancer in the related art.

Fig. 2 is a schematic view of the overall assembly of the balancer according to an embodiment of the present invention.

Fig. 3 is an exploded view of the components of the balancer according to an embodiment of the present invention.

Fig. 4 is a schematic plan view of a guide plate of a balancer according to an embodiment of the present invention.

Fig. 5 is a schematic perspective view of a guiding and limiting member of a balancer according to an embodiment of the present invention.

Fig. 6 is a schematic plan view of a guide plate of a balancer according to another embodiment of the present invention.

Fig. 7 is a schematic plan view of a guide plate of a balancer according to another embodiment of the present invention.

Fig. 8 is a schematic view illustrating that the guide disc is rotated during the paying-off process according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of the guiding disc about to be rotated into the locking slide from the circumferential outer slide at point a in the wire retrieving process according to an embodiment of the present invention.

Fig. 10 is a schematic view of the locking of the guide plate at the point b of the locking slide according to an embodiment of the present invention.

Fig. 11 is the utility model discloses an in-process of paying-off of bearing guide plate, will be followed the locking slide and rotated the schematic diagram that enters into circumference inner slide at c point.

Fig. 12 is a schematic diagram of the guide plate to be rotated from the circumferential inner slide to enter the circumferential outer slide at point d in an embodiment of the present invention.

Fig. 13 is a schematic path diagram of a locking slide of a guide tray according to an embodiment of the present invention.

Fig. 14 is a schematic perspective view of a guide plate according to an embodiment of the present invention.

Fig. 15 is a schematic perspective view of an adjusting device according to an embodiment of the present invention.

The reference numbers illustrate:

100: the housing 110: first housing 120: second housing 130: inner shell

140: a base 200: reel 210 connection portion 220: isolation column

300: energy storage spring 400: pins 500, 500A, 500B: bearing and guiding disc

510: circumferential outer slide 512: round corner 520: circumferential inner slideway

521: inner wall recess 530: locking slide 532: guide projection

540: the communication slide 550: counter bore 560: a through hole 567: a self-locking assembly;

600: rolling body 700: guide limit part 710: linear bearing guide slideway

800: rope and hook assembly

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and/or process steps that are closely related to the solution according to the invention are shown in the drawings, while other details that are not relevant to the invention are omitted.

It should be emphasized that the term "comprises/comprising/comprises/having" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components. It is also noted herein that the term "coupled," if not specifically stated, may refer herein to not only a direct connection, but also an indirect connection in which an intermediate is present. Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.

In order to solve or alleviate the very short problem of life-span that the ability of the anti violent operation of spring auto-lock equalizer among the prior art is not enough to lead to, the utility model provides a new self-lock device has creatively designed out to the balancer to promote the anti violent operation ability of balancer, thereby prolong self-lock device's cycle number extension balancer's life.

Fig. 2 is a schematic view showing an overall assembled shape of the balancer according to an embodiment of the present invention, and fig. 3 is an exploded view showing respective parts of the balancer. The balancer generally includes a housing 100, a reel 200 disposed in the housing 100, a charging spring 300, a pin 400 fixed to the housing 100 and penetrating the center of the reel 200 and the charging spring 300, a rope and hook assembly 800 wound around the reel 200, a self-locking assembly 567, and the like, wherein the self-locking assembly 567 includes a guide disc 500 rotating synchronously with the reel 200, a guide stopper 700 and a rolling body 600 fixedly connected directly or indirectly to the housing 100, and the rolling body 600 may be a ball (e.g., a steel ball), a cylinder, a tapered roller, a needle roller, or the like.

As shown in fig. 3, the case 100 may include first and second outer cases 110 and 120 located at the outermost portions, and may also include an inner case 130 and a base 140 located at the inner portion, the base 140 being used to carry the reel 200 and the charging spring 300.

The pin 400 may be fixed to the housing 100 and disposed through the center of the reel 200 and the stored spring 300, the pin 400 being generally stationary during use, and the pin 400 also adjusting the initial torque of the stored spring 300. The power spring 300 may be in the form of a scroll spring (or referred to as a spiral spring), and the like, and the outermost end of the power spring 300 may be fixed to the sidewall of the reel 200, and the innermost end may be connected to the pin 400. The reel 200 is used for releasing and releasing the rope and the hook assembly 800, and the self-locking assembly 567 is mainly used for locking the reel 200 and prohibiting the reel from continuously rotating in a certain direction. The balancer puts the weight suspended from the rope and hook assembly 800 in a weightless state by the energy of the energy storage spring. In the embodiment of the present invention, the improvement is mainly found in the self-locking assembly 567, as shown in fig. 2-3, compared to the prior art. For the portions which are not improved, there are various modifications in the prior art, all of which are applicable to the present invention, and the detailed description of these prior structures will be omitted herein, and the following description will focus on the self-locking assembly portion.

Fig. 4 is a schematic plan view of a guide disc in the self-locking assembly according to an embodiment of the present invention, and fig. 5 is a schematic perspective view of a guide limiting part in the self-locking assembly. In an embodiment of the present invention, the guide plate 500 may be fixedly connected to the reel 200 coaxially, or may not be directly connected to the reel 200 but rotate synchronously (e.g., coaxially and at the same rotation speed) with the reel 200. The guide limiting member 700 may be directly connected to the housing 100 (e.g., on the second casing 120), fixed relative to the housing 100, or indirectly fixed to the housing 100 through other components, so as to be fixed relative to the housing. As shown in fig. 4 and 5, the guide plate 500 has a curved guide sliding way, the guide limiting member 700 has a linear guide sliding way 710 along the radial or substantially radial direction of the guide plate, and the curved guide sliding way and the linear guide sliding way are disposed opposite to each other. The rolling element 600 is clamped between the curved guide slideway of the guide disc 500 and the linear guide slideway 710 of the guide limiting member 700, that is, the rolling element 600 is accommodated in the accommodating space defined by the intersection of the curved guide slideway and the linear guide slideway. Among them, the curved and linear guide runners 710 restrict the rotation of the guide plate 500 mainly by the movement of the rolling bodies 600, thereby generating a self-locking effect.

In an embodiment of the present invention, the linear guide sliding track of the guide limiting member 700 is preferably designed to be horizontally disposed along the radial direction of the guide disc, so that when the balancer is normally used, the linear guide sliding track is in a horizontal state as shown in fig. 8 to 12, but the present invention is not limited thereto.

In the above embodiment, as shown in fig. 4, the curved slide guide on the guide plate 500 may include an outer slide 510, an inner slide, a locking slide 530 connected between and in communication with the outer slide 510 and the inner slide, and a smooth communication slide 540 between the inner slide and the outer slide. Wherein, outer slide 510 is circumferential outer slide, forms a closed loop in the periphery of the guide dish. The inner slide is preferably a circumferential inner slide 520. The locking slide 530 may have a turning point, and the direction of the turning corner formed at the turning point (i.e. the direction of the turning corner) matches the unlocked turning direction of the guide disc, for example, the unlocked turning direction of the guide disc may be a turning in the direction of the turning corner. Here, the non-locked steering, i.e., the direction of rotation of the guide disc that is not intended to be locked, such as the paying-off direction of the reel, i.e., the direction of rotation of the reel when the rope (e.g., wire rope) is pulled out, will be described later with reference to examples. The utility model discloses a self-locking subassembly mainly utilizes in this circuitous turning point department, holds guide disc 500 and holds and lead locating part 700 because the route direction and the atress direction of slide produce the unilateral locking and realize the auto-lock.

In an embodiment of the present invention, the communicating section of the outer slide and the inner slide, the communicating section of the outer slide and the locking slide, and/or the communicating section of the inner slide and the locking slide may be designed to have a guide portion for guiding the rolling element to the predetermined slide according to the rotation direction of the guide disk, that is, the communicating section is designed to allow the rolling element to receive the guiding force to the predetermined slide according to the steering of the guide disk, so that the rolling element enters the corresponding track (slide) due to the guiding force, thereby realizing self-locking and unlocking. Here, the communicating section refers to a predetermined section near the communicating position, which is designed to generate a guiding force to be guided to a predetermined slideway based on the steering of the guide disk and the position of the rolling body.

In some embodiments of the present invention, the inner slide may not be the circumferential inner slide 520, as long as the end of the inner slide communicates with the outer slide, and the rolling element may be guided to the predetermined slide through the communicating section according to the rotation direction of the guide disc, and the present invention may be implemented as well.

The motion of the guide plate 500 is limited by the curved guide slideway, the rolling body and the linear guide slideway. The rolling bodies are accommodated in an accommodating space defined by the intersection of the curved and linear guide runners, and the movement of the rolling bodies is limited by the curved and linear guide runners. In the lockup slot 530, since there is a turning point, after the rolling elements enter the lockup slot 530 and move to the turning point along with the rotation of the disk 500 in the locked rotation direction, the rolling elements are restrained from moving so that the disk 500 can no longer rotate in the locked rotation direction, thereby producing a self-locking effect, i.e., locking the rotation direction of the reel. More specifically, at this return bend point, the reel cannot perform the wire-rewinding process. In an embodiment of the present invention, the locking slide may be, for example, a hook-shaped slide, but the present invention is not limited thereto, and may also be other circuitous shapes. For example, the locking slide may be composed of multiple circular segments of different radii.

In the embodiment of the present invention, the locking slide 530 and the communicating slide 540 may be provided with one or more groups, and as shown in fig. 4, the locking slide 530 and the communicating slide 540 are provided with two groups, and are arranged along the circumferential direction of the guide disc 500, preferably uniformly arranged between the circumferential outer slide and the circumferential inner slide, and of course, may be provided as more groups.

In some embodiments of the present invention, as shown in fig. 6 and 7, the guide plate 500 in fig. 6 may have various embodiments of structures. As shown in fig. 6, the circumferential outer ramp 510 of the guide plate 500A is generally circular and the circumferential inner ramp 520 is generally oval. As shown in fig. 7, the circumferential outer ramp 510 of the guide plate 500B is generally circular and the circumferential inner ramp 520 is generally circular. Generally, as used herein, refers to a slide that may have some deviation, such as, but not limited to, a circular or oval shape, having some location of depressions, protrusions, etc. Although the curved guide runners in the guide plate have different shapes, the curved guide runners can be designed to be self-locked or unlocked by guiding the rolling bodies to the locking runners, the inner runners or the outer runners by utilizing the guiding force of the inner walls of the runners, generated at the positions where the runners are communicated, due to the rotation of the guide plate, to the rolling bodies.

To further explain the self-locking principle of the balancer of the present invention, the operation of the self-locking assembly of the present invention is explained in detail with reference to fig. 8 to 12. In the following example, the rope of the balancer is a wire rope, and the rolling elements 600 are steel balls. The reel and the guide disc are fixedly connected and kept relatively static. The curved bearing guide slideway on the bearing guide disc and the linear bearing guide slideway on the bearing guide limiting part are grooves with smooth inner walls. The take-up direction and the pay-off direction refer to the rotation direction of the reel and the guide disc corresponding to the take-up and pay-off action of the steel wire rope, and can also be referred to as the take-up direction and the pay-off direction of the guide disc for short. The charging spring 300 is hereinafter simply referred to as a spring. In the use process of the balancer, the paying-off process generally induces the spring to generate bending elastic deformation by external force traction, so that the spring generates torsion in a plane. The wire-rewinding process is generally caused by the torsion of a spring, and the spring drives the reel and the guide disc to rotate.

During operation of this balancer, as shown in fig. 8:

point a is the position from the circumferential outer ramp 510 that is about to enter the locking ramp 530;

point b is the inflection point position of the locking ramp 530;

point c is the position where the self-locking skid way 530 is about to unlock into the circumferential inner slide way 520;

point d is the location from the circumferential inner slide 520 just before entering the circumferential outer slide 510.

1) And (5) carrying out a normal paying-off process.

When the steel wire rope of the balancer is pulled by external force, the wire winding wheel carries out the paying-off process. At this time, the guide plate 500 rotates in the wire feeding direction (clockwise direction in fig. 8, which is a steering direction in which locking is not desired, that is, a non-locking steering) by an external force. Under the interaction of the guide plate 500, the steel ball 600 and the guide stop 700, the steel ball 600 rolls along the outermost circumferential outer slideway 510 of the guide plate 500 counterclockwise with respect to the guide plate, as shown in fig. 8. If the pay-off direction of the guide disc is not changed, the stability is continued all the time.

2) And (4) self-locking process.

When the external force pulling the steel wire rope is removed, the guide disc 500 stops moving along the paying-off direction, and rotates in the reverse direction under the action of the spring, that is, the guide disc 500 rotates in the reverse direction to the paying-off direction, that is, in the reeling-in direction (counterclockwise direction, that is, the direction capable of locking) shown in fig. 9. At this time, the steel balls 600 roll clockwise with respect to the guide plate along the circumferential outer slide 510 outside the guide plate 500.

When the guide disc 500 rotates to the position of a shown in fig. 9, the steel ball 600 enters the locking slide 530 and rolls to the position of b shown in fig. 10 to be locked at the turning point. In order to make the steel ball 600 automatically enter the locking slide 530 from the position of the a point, in an embodiment of the present invention, the circumferential outer slide (communicating section) with a predetermined length from the position communicating with the locking slide and away from the inflection point direction may be designed to have a concave portion recessed toward the inner circumference, such as the slide portion where the ball is located in fig. 8 has a concave portion recessed toward the inner circumference (see the outer wall concave portion 511 in fig. 14), and the concave portion serves as a guide portion for the communicating section of the outer slide and the locking slide, so that the moving direction of the ball may be adjusted to facilitate "pushing" the rolling element to enter the locking slide 530 from the circumferential outer slide 510. Further, the inner wall of the circumferential outer slide of the predetermined length may have a smoothly transitioning radius, thereby making it easier for the balls to enter the locking slide 530. Alternatively, or additionally, as shown in fig. 14 and 7, between the locking ramp 530 and the bifurcation of the circumferential outer ramp 510, there is a guide projection 532 that guides the rolling elements to the locking ramp when the guide disk rotates in the locked steering, which guide projection 532 can be regarded as the outer side wall (communicating section) of the locking ramp 530 near the circumferential outer ramp 510, which can serve as another guide structure for the communicating section of the outer ramp and the locking ramp, making it easier for the balls to enter the locking ramp 530. Before self-locking, the guide protrusion 532 of the locking slide 530 can better prevent the rolling elements from entering the circumferential outer slide 510 at the fork when the guide disc rotates along the locking steering (winding direction). More preferably, the walls of the locking slide 530 on both the inner and outer sides are rounded with a smooth transition to allow easier ball entry.

In another embodiment of the present invention, the slide portion (connected section) extending from the circumferential outer slide to the inflection point of the locking slide may be designed as a spiral slide with smooth transition, as shown in fig. 7, which serves as a guide portion for the connected section of the outer slide and the locking slide, so that when the guide plate rotates along the lock-up turning direction, the balls naturally enter the locking slide 530 along the spiral slide with smooth transition, i.e., the balls are more easily entered into the locking slide.

It can be understood that, after entering the locking slide 530, when the steel ball 600 arrives at the b point position shown in fig. 10, because the direction that the linear guide slide limited the ball can only horizontally move under the effect of the linear guide slide, and the ball that the curved guide slide limited can not transversely move at the circuitous turning point, the guide disc 500 can not rotate along the winding direction, that is, the locking function is realized.

3) And (5) unlocking process.

When the steel wire rope of the balancer receives external force again, when the guide disc 500 rotates along the outgoing line direction, the steel ball 600 rolls along the slide way of the section "bc" as shown in fig. 10 until the steel ball passes through the intersection point "c" of the circumferential inner slide way 520, and then the unlocking is completed. More specifically, in order to enable the steel ball to enter the bc section to be unlocked, the initial stage of the bc section is designed to be a perfect circular arc relative to the circle center of the bearing disc, namely the initial circular arc of the inflection point of the locking slide way extending towards the inner slide way is the perfect circular arc taking the pin shaft as the circle center, and the ball is not acted by force relative to the radial direction of the bearing disc when the section moves in a curve, so that the ball cannot roll along the slide way of the ba section and only can roll along the slide way of the bc section, and only can continue to move after moving for a certain distance and crossing the bifurcation of the inflection point. The perfect circular arc of the beginning of the bc section can be regarded as a guide for the communicating sections of the inner slide and the locking slide.

In an embodiment of the present invention, the unlocking process can be realized only by pulling the wire rope outward for a small distance, for example, 0.5-2 cm.

In an embodiment of the present invention, the locking slide 530 may be composed of multiple arc segments with different radii. As shown in fig. 13, the slide way at the ab segment of the locking slide way 530 is a smooth-transition arc curve, the slide way at the bc segment can be a multi-segment smooth-transition arc curve, and the first segment of the arc curve at the bc segment is a perfect circular arc relative to the circle center of the guide disc, so that the rolling bodies can be ensured to be smooth and stable in the rolling process, and the balancer can be ensured not to have mechanical impact, vibration or noise in the operation process.

4) And (5) normally taking up the wire.

After unlocking, the steel ball 600 enters the circumferential inner slide 520. At this time, if no tension is applied to the wire rope, the guide plate 500 is rotated in a reverse direction by the spring, and the guide plate 500 is passively rotated by the ball 600 along the restriction in the circumferential inner slide 520. As shown in fig. 12, the guide disc 500 rotates in the wire takeup direction. For example, the steel ball 600 may roll clockwise relative to the circumferential inner slide way along the inner wall of the circumferential inner slide way 520.

In an embodiment of the present invention, when the steel wire rope is completely retracted and enters the balancer, the steel ball 600 is still located in the circumferential inner slide 520. When an external force acts on the steel wire rope, the bearing disc 500 rotates in the paying-off direction, and the steel ball 600 can enter the circumferential outer slideway 510 from the circumferential inner slideway 520 at the position of the d point, so that the next circulation process is performed.

In an embodiment of the present invention, as shown in fig. 14, the inner wall of the arc section (communication section) of the circumferential inner slide 520 between the locking slide 530 and the adjacent communication slide 540 has a concave portion recessed toward the inner circumference, and the inner wall of the circumferential inner slide 530 has a rounded corner with smooth transition. For example, at a segment near where the circumferential inner slide way 520 meets the communication slide way 540, the circumferential inner slide way 520 is inwardly recessed and the inner wall of the circumferential inner slide way has a smoothly transitioning fillet. The inward inner wall depression 521 of the circumferential inner race 520 facilitates "pushing" the rolling elements to roll within the circumferential inner race 520, thereby smoothly performing the wire-rewinding process.

In an embodiment of the present invention, as shown in fig. 14, the communicating slide (communicating section of the outer slide and the inner slide) 540 is designed to have a smooth curvature that guides the moving path of the rolling elements to the outer slide when the bearing disk rotates in the non-lock steering (unwinding direction), and the arc portion having this smooth curvature enables the rolling elements to enter the circumferential outer slide 510 from the circumferential inner slide 520. Furthermore, the wall portion of the communication slide 540 on the side may have a smoothly transitioning fillet 541 facilitating the entry of the rolling elements from the circumferential inner slide 520 to the circumferential outer slide 510.

The utility model discloses an in the embodiment, also can be with the inner slide design for not including the circumference inner slide of closed loop, and only with the inner slide design for middle part and locking slide intercommunication, both ends and circumference outer slide intercommunication, from behind the locking slide unblock, through the design of the suitable diversion guiding force of slide inner wall, can directly guide the steel ball to circumference outer slide under wire rope does not have external force and pulls, and automatic locking once more dies after being close a week along receiving the line direction rotation, perhaps there is external force at wire rope to pull and get into circumference outer slide down, move along the unwrapping wire direction.

In an embodiment of the present invention, as shown in fig. 5 and 8, the bearing guide plate 500 is a rotary plate, the bearing guide position-limiting member 700 can be a cuboid, and the linear bearing guide slide 710 is generally a linear slide along the radial direction of the bearing guide plate 500. The length of the linear bearing runner 710 is greater than the distance between the circumferential outer runner 510 and the circumferential inner runner 520 and less than the radius of the bearing disk 500. The guide limiting member 700 may be directly fixed to the housing or may be fixed to the housing through a bracket. The utility model discloses some embodiments can also set up two and hold and lead locating part 700 for round pin axle symmetry ground.

In an embodiment of the present invention, the rolling element 600 may be a rolling sphere or a rolling cylinder, such as a steel ball, or a tapered roller or a roller pin, and it is only necessary to ensure that the rolling element 600 can roll in the slideway.

In an embodiment of the present invention, the guiding plate 500 can be integrally formed by plastic or metal, and the sliding way is a groove, and the inner wall of the groove is smooth. In an embodiment of the present invention, the curved guide slideway and the linear guide slideway may adopt a recess recessed downward, and the depth of the recess does not exceed the diameter of the rolling element.

In an embodiment of the present invention, as shown in fig. 4, the guiding disc 500 may be provided with a counter bore 550, which may be bolted to the reel 200 to keep the relative fixation. The middle of the guide plate 500 may also be provided with a through hole 560 for the rotation shaft to pass through, being concentrically installed with the reel 200 and the spring.

In an embodiment of the present invention, the balancer may further include an adjusting device 700 disposed outside the housing or outside the reel, as shown in fig. 15, the adjusting device 700 is connected to the pin 400, and the adjusting device 700 is adjusted in such a manner that the pin 400 is rotated to rotate the spiral spring, thereby changing the initial torque of the spiral spring. The adjustment device 700 may include a rotating ratchet 710 and an iron 720 to lock the rotating ratchet 710. The rotational ratchet 710 may be provided with holes to facilitate rotation. In this embodiment, the adjusting means 700 may be provided at the outer side of the base 140.

Because the utility model discloses a self-locking subassembly is rolling element and slide, is full contact circular arc structure for the atress contact surface increases, and impact resistance can be better, and resistant violence operating capability is just strong. And the self-locking assembly has fewer parts and only one standard spherical movable part, and the rolling body does not need any connection mode, so that the damage probability is lower. The test result shows that the normal service life of the existing circulating self-locking balancer in the market is 2 ten thousand to 3 ten thousand times, and the service life of the utility model can reach more than 20 ten thousand, thus greatly prolonging the service life of the balancer.

The utility model discloses a self-locking structure not only can be applicable to the spring balancer, can also be applicable to other structures that need auto-lock because of relative rotation.

Correspondingly, the invention also provides a guide disc for the rotary self-locking device, and the guide disc has the structure as described above. Namely, the bearing guide disc is provided with a curve bearing slide way, and the curve bearing slide way comprises an outer slide way, an inner slide way, a locking slide way and a smooth communication slide way, wherein the locking slide way is arranged between the outer slide way and the inner slide way and is communicated with the outer slide way and the inner slide way; the outer slide way is a circumferential outer slide way, the locking slide way is provided with a circuitous turning point, and the direction of the circuitous turning point formed at the circuitous turning point is matched with the non-locking turning direction of the bearing and guiding disc.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. The utility model provides a rotatory self-lock device, its include the casing, arrange the energy storage spring in the casing in, be fixed in on the casing and run through energy storage spring's round pin axle, its characterized in that, self-lock device still includes:

the bearing guide disc can rotate, a curved bearing guide slideway is arranged on the bearing guide disc and comprises an outer slideway, an inner slideway, a locking slideway communicated between the outer slideway and the inner slideway, and a smooth communicated slideway between the inner slideway and the outer slideway, wherein the outer slideway is a circumferential outer slideway, the end part of the inner slideway is communicated with the outer slideway, a roundabout inflection point is arranged on the locking slideway, and the direction of the roundabout corner formed at the roundabout inflection point is matched with the non-locking steering of the bearing guide disc;

the bearing and guide limiting part is relatively fixed and is provided with a linear bearing and guide slideway which is oppositely arranged with the curved bearing and guide slideway;

the rolling body is clamped between the bearing guide disc and the bearing guide limiting part and accommodated in an accommodating space defined by the intersection of the curve bearing guide slideway and the linear bearing guide slideway.

2. The rotational self-locking device according to claim 1, characterized in that the communicating section of the outer and inner ramps, the communicating section of the outer and locking ramps and/or the communicating section of the inner and locking ramps is designed with guides that guide the rolling bodies to predetermined ramps according to the direction of rotation of the guide disc.

3. The rotational self-locking device according to claim 1, wherein the inner slide is a circumferential inner slide, and the locking slide is communicated between the circumferential outer slide and the circumferential inner slide;

the circumferential outer slideway is substantially circular and the circumferential inner slideway is substantially circular or elliptical.

4. The rotational self-locking device according to claim 3, wherein the curvilinear guide slides have at least two sets of the locking slides and at least two sets of the communicating slides, each of the at least two sets of the locking slides and the at least two sets of the communicating slides being evenly arranged between the circumferential outer slide and the circumferential inner slide.

5. The rotational self-locking device according to claim 1, wherein the linear guide runner is in a radial direction of the guide disc, and a length of the linear guide runner is smaller than a radius of the guide disc.

6. The rotational self-locking device according to any one of claims 1 to 5, wherein the rolling body is a rolling sphere or a rolling cylinder; the curve bearing and guiding slideway and the straight line bearing and guiding slideway are grooves.

7. The rotational self-locking device according to claim 2, wherein the guides of the communicating sections of the outer slide and the locking slide comprise: and the concave part is arranged on the circumferential outer slide way, is recessed towards the inner circumference from the position communicated with the locking slide way and is away from the turning point by a preset length.

8. The rotational self-locking device according to claim 2, wherein the guides of the communicating sections of the outer slide and the locking slide comprise: and the spiral slideway smoothly transits from the circumferential outer slideway to the circuitous inflection point.

9. The rotational self-locking device according to claim 2, wherein the guides of the communicating sections of the outer slide and the locking slide comprise: the guide bulge between the locking slide way and the fork opening of the circumferential outer slide way guides the rolling body to the locking slide way when the guide disc rotates along locking and steering.

10. The rotational self-locking device according to claim 2, wherein the locking slide is composed of a plurality of arc segments with different radii, and the guiding portions of the communicating sections of the inner slide and the locking slide comprise: and the starting arc extends to the inner slide way at the corner of the locking slide way, and is a perfect circular arc taking the pin shaft as the center of a circle.

11. The rotational self-locking device according to claim 2, wherein the guides of the communicating sections of the outer and inner ramps comprise: the smooth arc of the connecting section guides the path of motion of the rolling bodies to the outer race when the guide disc rotates in the unlocked direction.

12. The guide disc of the booster is characterized in that a curve guide slideway is arranged on the guide disc and comprises an outer slideway, an inner slideway, a locking slideway and a smooth communication slideway, wherein the locking slideway is arranged between the outer slideway and the inner slideway and is communicated with the outer slideway and the inner slideway;

the outer slide way is a circumferential outer slide way, a circuitous inflection point is arranged on the locking slide way, and the direction of the circuitous corner formed at the circuitous inflection point is matched with the non-locking steering of the bearing disc.

13. A booster guide disk according to claim 12, wherein the guide disk is adapted to rotate synchronously with a reel of a booster, and the guide disk is adapted to cooperate with a guide stopper of the booster, the guide stopper being fixed to a side of a housing of the booster facing the guide disk and having a linear guide runner disposed opposite to a curved guide runner;

the curved guide slideway of the guide disc and the linear guide slideway of the guide limiting piece are intersected to define an accommodating space for accommodating the rolling body;

the communicating section of the outer and inner ramps, the communicating section of the outer and locking ramps and/or the communicating section of the inner and locking ramps are designed with guides that guide the rolling bodies to predetermined ramps according to the direction of rotation of the guide disk.

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