CN220499195U

CN220499195U - Sliding limiting device

Info

Publication number: CN220499195U
Application number: CN202322158969.9U
Authority: CN
Inventors: 石林; 王倩; 祝汉歧
Original assignee: Beijing Keen Dazhi Robot Technology Co ltd
Current assignee: Beijing Keen Dazhi Robot Technology Co ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-02-20
Anticipated expiration: 2033-08-11

Abstract

The present disclosure provides a sliding stop device, it includes: the mounting plate is provided with an annular groove and a first limit part and a second limit part; the sliding limiting block is slidably arranged between the first limiting part and the second limiting part and is provided with a first position and a second position; the fixed limiting block is arranged to slide along the annular groove; when the fixed limiting block moves along a first direction relative to the mounting plate, the fixed limiting block drives the sliding limiting block, so that the sliding limiting block can be contacted with the first limiting part and located at a first position; when the fixed limiting block moves along a second direction relative to the mounting plate, the fixed limiting block drives the sliding limiting block, so that the sliding limiting block can be in contact with the second limiting part and located at a second position.

Description

Sliding limiting device

Technical Field

The present disclosure relates to mechanical limiting mechanisms, and more particularly to a sliding limiting device.

Background

In the running process of the industrial robot and other rotary motion equipment, a mechanical limiting device is required to be designed for safety, and the mechanical limiting device can prevent the equipment from directly striking the mechanical structure of the equipment or striking operators or other equipment when exceeding the motion range due to the failure of the motion angle limitation of the software program layer.

In addition, the rotating shafts of the rotating motion equipment such as the joints of the industrial robots are often hollow shafts, and pipelines such as cables, air pipes or oil pipes are arranged in the rotating shafts, so that the pipelines in the equipment can be excessively twisted and broken once the rotating shafts exceed the allowable rotating range of the design, and the equipment is damaged.

The existing mechanical limit is usually realized by arranging an impact block and a limiting block on two parts which rotate relatively respectively, the impact block and the limiting block are in direct contact with each other, buffering is realized by installing a rubber or polyurethane protective pad and other relatively soft protective pads on the contact surface, the structure is fixed limit, the structure is simpler, but the fixed limit itself needs to occupy a certain space, when the rotary equipment runs at a high speed under a heavy load, the soft limit fails, when the mechanical limit impact brake is used, the mechanical limit is likely to be applied with larger impact to the fixed mechanical limit to cause structural damage, the fixed limit is often designed integrally with equipment key parts such as a connecting rod machine table, and the like, the fixed limit needs to be replaced integrally after the structural damage, and the maintenance cost is very high.

Disclosure of Invention

In order to solve one of the above technical problems, the present disclosure provides a sliding limiting device.

According to one aspect of the present disclosure, there is provided a sliding limiting device, comprising:

the mounting plate is provided with an annular groove and a first limit part and a second limit part;

the sliding limiting block is slidably arranged between the first limiting part and the second limiting part and is provided with a first position and a second position; and

the fixed limiting block is arranged to slide along the annular groove; when the fixed limiting block moves along a first direction relative to the mounting plate, the fixed limiting block drives the sliding limiting block, so that the sliding limiting block can be contacted with the first limiting part and located at a first position; when the fixed limiting block moves along a second direction relative to the mounting plate, the fixed limiting block drives the sliding limiting block, so that the sliding limiting block can be in contact with the second limiting part and located at a second position.

According to the sliding limiting device of at least one embodiment of the present disclosure, the annular groove is formed at one end face of the mounting plate, and an opening portion of the annular groove is provided along an axial direction of the mounting plate.

According to the sliding limiting device of at least one embodiment of the present disclosure, the first limiting portion and the second limiting portion are formed by the annular groove.

According to the sliding limiting device of at least one embodiment of the present disclosure, the annular groove includes a first groove portion and a second groove portion, wherein a pitch of the second groove portion is larger than a pitch of the first groove portion.

According to the sliding limiting device of at least one embodiment of the present disclosure, the sliding limiting block is slidably disposed in the second groove portion.

According to the sliding limiting device of at least one embodiment of the present disclosure, the thickness of the sliding limiting block is greater than the interval between the first groove portions and less than or equal to the interval between the second groove portions.

A sliding stop device according to at least one embodiment of the present disclosure further includes:

and the limiting plate is arranged on the mounting plate and used for preventing the sliding limiting block from separating from the second groove part.

According to the sliding limiting device of at least one embodiment of the present disclosure, two limiting plates are provided, and a gap is formed between the two limiting plates, so that the fixed limiting block can move in the gap.

According to the sliding limiting device of at least one embodiment of the present disclosure, the first limiting portion and the second limiting portion are formed at the connection portion of the first groove portion and the second groove portion.

According to the sliding limiting device of at least one embodiment of the present disclosure, at least one of the two circumferential ends of the sliding limiting block is provided with a cushion pad.

According to the sliding limiting device of at least one embodiment of the present disclosure, the sliding limiting block is spherical.

According to the sliding limiting device of at least one embodiment of the present disclosure, the circumferential length of the sliding limiting block is less than or equal to the movement distance of the sliding limiting block.

According to the sliding limiting device of at least one embodiment of the present disclosure, the movement distance of the sliding limiting block is the circumferential length of the annular groove between the first limiting portion and the second limiting portion minus the circumferential length of the sliding limiting block.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a sliding stop device according to one embodiment of the present disclosure.

Fig. 2 is an exploded structural schematic view of a sliding stop device according to one embodiment of the present disclosure.

Fig. 3 is a schematic structural view of a mounting plate according to one embodiment of the present disclosure.

Fig. 4 is a schematic structural view of a limiting plate according to one embodiment of the present disclosure.

The reference numerals in the drawings specifically are:

100 sliding limiting device

110 mounting plate

111 first limit part

112 second limit part

113 first groove part

114 second groove portion

120 sliding limiting block

121 cushion pad

130 fixed limiting block

140 limit plates.

Detailed Description

The present disclosure is described in further detail below with reference to the drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant content and not limiting of the present disclosure. It should be further noted that, for convenience of description, only a portion relevant to the present disclosure is shown in the drawings.

In addition, embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict. The technical aspects of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the exemplary implementations/embodiments shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Thus, unless otherwise indicated, features of the various implementations/embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concepts of the present disclosure.

The use of cross-hatching and/or shading in the drawings is typically used to clarify the boundaries between adjacent components. As such, the presence or absence of cross-hatching or shading does not convey or represent any preference or requirement for a particular material, material property, dimension, proportion, commonality between illustrated components, and/or any other characteristic, attribute, property, etc. of a component, unless indicated. In addition, in the drawings, the size and relative sizes of elements may be exaggerated for clarity and/or descriptive purposes. While the exemplary embodiments may be variously implemented, the specific process sequences may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in reverse order from that described. Moreover, like reference numerals designate like parts.

When an element is referred to as being "on" or "over", "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements present. For this reason, the term "connected" may refer to physical connections, electrical connections, and the like, with or without intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "under … …," under … …, "" under … …, "" lower, "" above … …, "" upper, "" above … …, "" higher "and" side (e.g., as in "sidewall"), etc., to describe one component's relationship to another (other) component as illustrated in the figures. In addition to the orientations depicted in the drawings, the spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below" … … can encompass both an orientation of "above" and "below". Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising," and variations thereof, are used in the present specification, the presence of stated features, integers, steps, operations, elements, components, and/or groups thereof is described, but the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximation terms and not as degree terms, and as such, are used to explain the inherent deviations of measured, calculated, and/or provided values that would be recognized by one of ordinary skill in the art.

Fig. 1 is a schematic structural view of a sliding stop device 100 according to one embodiment of the present disclosure. Fig. 2 is an exploded structural schematic view of the sliding stop device 100 according to one embodiment of the present disclosure.

As shown in fig. 1, the present disclosure provides a sliding stop device 100, comprising: mounting plate 110, sliding stopper 120, fixed stopper 130, etc.

In use, the slide limiting device 100 of the present disclosure may be mounted to a rotating component, such as a decelerator or the like, and the mounting plate 110 may be capable of rotating both clockwise and counterclockwise.

The mounting plate 110 is provided with an annular groove and a first limit part 111 and a second limit part 112; it will be appreciated by those skilled in the art that the first and second stopper portions 111 and 112 may be formed by protrusions provided from the bottom wall of the annular groove, but may also be formed by the manner of fig. 3.

Fig. 3 is a schematic structural view of a mounting plate 110 according to one embodiment of the present disclosure.

As shown in fig. 2 and 3, the annular groove is formed at one end face of the mounting plate 110, and an opening portion of the annular groove is provided in the axial direction of the mounting plate 110, that is, the opening portion of the annular groove is formed at a surface of an end portion of the mounting plate 110.

In a preferred embodiment, the annular recess is formed in a circular shape as a whole, considering that the mounting plate 110 rotates in actual use.

In the present disclosure, the first limiting portion 111 and the second limiting portion 112 are formed by the annular groove; for example, the annular groove includes a first groove portion 113 and a second groove portion 114, and the second groove portion 114 has a pitch larger than that of the first groove portion 113. Wherein, the distance between the second groove 114 is the distance between the two sidewalls of the second groove 114; the pitch of the first groove 113 is the distance between the two sidewalls of the first groove 113. In other words, the internal clearance of the second groove portion 114 is larger than that of the first groove portion 113, whereby the fixed stopper 130 can move along the entire annular groove.

More specifically, the first and second stopper portions 111 and 112 are formed at the connection points of the first and second groove portions 113 and 114. That is, since the first groove portion 113 and the second groove portion 114 have different gaps, accordingly, a stepped surface is formed at the junction of the first groove portion 113 and the second groove portion 114, which can limit the movement stroke of the sliding stopper 120, so that two stepped surfaces at both ends of the second groove portion 114 in the circumferential direction are formed as the first stopper portion 111 and the second stopper portion 112, respectively.

The sliding stopper 120 is slidably disposed between the first and second stopper portions 111 and 112, and more specifically, the sliding stopper 120 is slidably disposed in the second groove portion 114 and is limited in position by the first and second stopper portions 111 and 112. That is, the sliding stopper 120 can move only in the second groove portion 114 and cannot enter the first groove portion 113.

When the sliding limiting block 120 moves in the second groove part 114, the sliding limiting block has a first position and a second position; more specifically, when one end of the sliding stopper 120 in the circumferential direction is in contact with the first limiting portion 111, the sliding stopper 120 is located at a first position, and correspondingly, when the other end of the sliding stopper 120 in the circumferential direction is in contact with the second limiting portion 112, the sliding stopper is located at a second position.

In this disclosure, the sliding stopper 120 may have a circular arc structure, and the center of the circular arc structure is the same as the center of the annular groove, which is the center of rotation of the mounting plate 110.

In a preferred embodiment, at least one of the two circumferential ends of the sliding stopper 120 is provided with a buffer pad 121, so that the sliding stopper 120 can be buffered when contacting the first and second stopper portions 111 and 112, preventing damage to the sliding stopper 120 and the mounting plate 110.

Further, in order to prevent the sliding stopper 120 from entering the first groove portion 113, the thickness (the dimension in the radial direction) of the sliding stopper 120 is larger than the pitch of the first groove portion 113 and smaller than or equal to the pitch of the second groove portion 114.

The fixed limiting block 130 is arranged to slide along the annular groove; it will be appreciated by those skilled in the art that the fixed stop 130 may be fixed to some non-moving component, in which case the fixed stop 130 can rotate relative to the mounting plate 110 as the mounting plate 110 rotates.

Specifically, when the mounting plate 110 rotates counterclockwise, the fixed stopper 130 moves in a first direction with respect to the mounting plate 110, and the fixed stopper 130 drives the sliding stopper 120 such that the sliding stopper 120 can contact the first stopper 111 and be located at a first position.

On the other hand, when the mounting plate 110 rotates clockwise, the fixed stopper 130 moves in the second direction with respect to the mounting plate 110, and the fixed stopper 130 drives the sliding stopper 120 so that the sliding stopper 120 can contact the second stopper portion 112 and be located at the second position.

Thus, in the sliding limiting device 100 of the present disclosure, by the arrangement of the sliding mounting portion 110, the impact between the sliding limiting block 120 and the mounting plate 110 is improved; moreover, even if the sliding stopper 120 is damaged, only the sliding stopper 120 is replaced, and the maintenance cost is low.

In another embodiment, the sliding stop device 100 may be spherical.

In a preferred embodiment, the circumferential length of the sliding limiting block 120 is less than or equal to the movement distance of the sliding limiting block 120, so that the fixed limiting block 130 can limit the rotation angle of the mounting plate 110 by more than ±180 degrees, and the rotation movement range of the rotary equipment can be greatly increased, thereby improving the working efficiency.

Wherein the movement distance is the circumferential length of the annular groove between the first and second stopper portions 111 and 112 (the circumferential length of the second groove portion 114) minus the circumferential length of the slide stopper 120.

In this disclosure, the sliding limiting device 100 further includes: the limiting plate 140 is disposed on the mounting plate 110, and is used for preventing the sliding limiting block 120 from being separated from the second groove 114.

Therefore, the key parts such as the fixed limiting block, the sliding limiting block and the mounting plate are designed to be independently detachable, and once the limiting structure is damaged due to large impact, only the damaged parts in the sliding limiting device are required to be replaced, so that damage to key equipment parts such as a machine table and a connecting rod is avoided, and the maintenance cost is low.

In the present disclosure, as shown in fig. 1, 2 and 4, the limiting plates 140 are provided in two, and a gap is provided between the two limiting plates 140 so that the fixed limiting block 130 can move in the gap. In the present disclosure, the two limiting plates 140 are disposed on two sides of the second groove 114, respectively, and limit the axial movement of the sliding limiting block 120. It should be understood by those skilled in the art that the number of the limiting plates 140 may be set to one.

Structurally, the limiting plates 140 are circular arc-shaped, and a gap between the two limiting plates is circular arc-shaped, so that the fixed limiting block 130 can pass through the gap on one hand, and the limiting plates 140 can guide the fixed limiting block 130 on the other hand.

In one embodiment, the fixed stop 130 may include a boss disposed within the annular groove and movable relative to the mounting plate under the guidance of the annular groove.

In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the present application. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

It will be appreciated by those skilled in the art that the above-described embodiments are merely for clarity of illustration of the disclosure, and are not intended to limit the scope of the disclosure. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present disclosure.

Claims

1. A sliding limiting device, comprising:

2. The slip limiting device according to claim 1, wherein the annular groove is formed in one end face of the mounting plate, and an opening portion of the annular groove is provided in an axial direction of the mounting plate.

3. The slip limiting device of claim 1, wherein the first and second limiting portions are formed by the annular groove.

4. The slip limiting device of claim 3, wherein the annular groove comprises a first groove portion and a second groove portion, wherein the second groove portion has a spacing greater than the first groove portion.

5. The slip limiting device of claim 4, wherein the slip limiting block is slidably disposed in the second slot portion.

6. The slip limiting device of claim 5, wherein the thickness of the slip limiting block is greater than the spacing of the first slot portions and less than or equal to the spacing of the second slot portions.

7. The slip-limiting device of claim 5, further comprising:

8. The slip limiting device of claim 7, wherein the limiting plates are provided in two with a gap therebetween so that the fixed limiting block can move within the gap.

9. The slip limiting device of claim 4, wherein the first and second limiting portions are formed by a junction of the first and second groove portions.

10. The slip limiting device of claim 1, wherein at least one of the circumferential ends of the slip limiting block is provided with a cushion pad.

11. The slip limiting device of claim 1, wherein the slip limiting block is spherical.

12. The slip limiting device of claim 1, wherein a circumferential length of the slip limiting block is less than or equal to a distance of movement of the slip limiting block.

13. The slip limiting device of claim 12, wherein the distance of movement of the slip limiting block is the circumferential length of the annular groove between the first and second limiting portions minus the circumferential length of the slip limiting block.