CN220107748U - Limiting device for controlling rotation of rotating shaft - Google Patents

Abstract

The utility model relates to the technical field of rotation control of rotating shafts, in particular to a limiting device for controlling rotation of a rotating shaft. The limiting device comprises a base, a limiting mechanism, an induction component and a blocking arm. The limiting mechanism comprises a sliding component and a stop block, and the sliding component is arranged on the base in a sliding mode. The sensing component comprises a sensing element and a triggering piece, the sensing element is arranged on the base, and the triggering piece is arranged on the sliding component. The baffle arm is arranged on the outer circumferential surface of the rotating shaft, the rotating shaft drives the baffle arm to move and to be abutted with the sliding component to drive the sliding component to move, the sliding component drives the trigger piece to move to the induction area of the induction element, and the induction element feeds back information to perform power-off treatment on the motor so as to stop driving the rotating shaft to rotate. The rotating shaft still continues to rotate under the action of inertia, and then the stop block is abutted with the sliding component, so that the rotating shaft completely stops rotating. The rotating shaft rotating angle is accurately controlled, and the direct failure of rotating control of the rotating shaft caused by the failure of the electric signal of the sensing assembly is effectively prevented.

Description

Limiting device for controlling rotation of rotating shaft

Technical Field

The utility model relates to the technical field of rotation control of rotating shafts, in particular to a limiting device for controlling rotation of a rotating shaft.

Background

In fields such as mechanical production and motion control, the motor-driven rotary shaft can be applied to the rotary shaft, and the rotary shaft is driven to rotate by the motor so as to realize production and manufacturing or motion control. In some cases, the rotation of the rotating shaft needs to be controlled, that is, the rotation angle of the rotating shaft is controlled, so that the rotating shaft stops moving after rotating by a certain angle.

In the prior art, the rotation control of the rotating shaft is generally realized through induction photoelectricity, a trigger piece is arranged on the outer circumferential surface of the rotating shaft, the trigger piece follows the rotating shaft to rotate, when the trigger piece moves into an induction area of the induction photoelectricity, the induction photoelectricity feeds back information to a controller to cut off the power of the motor, and then the motor stops driving the rotating shaft to rotate. The defects are that: after the motor is powered off, the rotating shaft still can continuously rotate for a distance under the action of inertia, so that the control precision of the rotating angle of the rotating shaft is lower, and the production requirement cannot be met; in addition, if the induced photoelectricity has an electrical signal failure, the rotation control of the rotating shaft is directly failed, and the hidden danger of production safety is provided.

Therefore, a limit device for controlling the rotation of the rotating shaft is needed to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a limiting device for controlling rotation of a rotating shaft, which solves the problems of lower control precision of the rotation angle of the rotating shaft and even failure of rotation control of the rotating shaft in the prior art.

In order to achieve the above object, the following technical scheme is provided:

a stop device for controlling pivot gyration includes:

a base;

the limiting mechanism comprises a sliding component and a stop block, the stop block is arranged on the base, the sliding component is arranged on the base in a sliding mode, and the sliding component can be abutted with the stop block;

the sensing assembly comprises a sensing element and a trigger piece, the sensing element is arranged on the base, and the trigger piece is arranged on the sliding assembly, so that the sliding assembly drives the trigger piece to move close to or far away from the sensing element;

the baffle arm is arranged on the outer circumferential surface of the rotating shaft, and the rotating shaft can drive the baffle arm to move, so that the baffle arm can be abutted with the sliding component and drive the sliding component to move.

Preferably, the sliding assembly comprises a sliding block, a guide rail is arranged on the base, the sliding block is in sliding fit with the guide rail, and the sliding block can be abutted with the stop block.

Preferably, the stop is detachably mounted on the guide rail, and the mounting position on the guide rail is adjustable.

Preferably, the sliding assembly further comprises a mounting plate and a resisting piece, the mounting plate is arranged on the sliding block, the resisting piece is detachably arranged on the mounting plate, and the resisting piece is used for being abutted with the resisting arm.

Preferably, the limiting device for controlling the rotation of the rotating shaft further comprises a buffering reset assembly, the buffering reset assembly comprises a connecting piece and two elastic pieces, the connecting piece is installed on the trigger piece, one ends of the two elastic pieces are connected with the connecting piece, the other ends of the two elastic pieces are connected to the base at intervals along the sliding direction of the sliding assembly, and the connecting piece is located between the two elastic pieces.

Preferably, the buffer reset assembly further comprises a connecting bolt, one connecting bolt is arranged on the connecting piece, two connecting bolts are arranged on the base at intervals, the elastic piece is a tension spring, the hanging rings at one end of the two tension springs are sleeved with the connecting bolts on the connecting piece, and the hanging rings at the other end of the two tension springs are sleeved with the connecting bolts on the base respectively.

Preferably, two stop blocks are arranged, and the two stop blocks are arranged at two sides of the sliding direction of the sliding assembly at intervals.

Preferably, two sensing elements are arranged on two sides of the sliding component in the sliding direction at intervals.

Preferably, the sensing element is a groove type photoelectric sensor, the trigger piece is a strip-shaped plate, and the sliding component can drive the strip-shaped plate to move into the groove type photoelectric sensor.

Preferably, the blocking arm includes a mounting portion and an abutting portion, the mounting portion is disposed on an outer circumferential surface of the rotating shaft, the abutting portion is detachably mounted on the mounting portion, and the abutting portion is used for abutting against the sliding assembly.

Compared with the prior art, the utility model has the beneficial effects that:

according to the limiting device for controlling the rotation of the rotating shaft, the power-off treatment of the motor is realized through the induction component, so that the motor stops driving the rotating shaft to rotate. Then the dog is abutted with the sliding component, and the sliding component blocks the baffle arm on the rotating shaft, so that the rotating shaft stops rotating completely. The rotating shaft is stopped and limited by the sensing assembly and the stop block, so that the rotating angle of the rotating shaft is controlled more accurately; and effectively prevent the problem that the rotation control of the rotating shaft is directly invalid because of the failure of the electric signal of the induction component.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of a limiting device for controlling rotation of a rotating shaft according to the present utility model;

fig. 2 is another schematic structural view of a limiting device for controlling rotation of a rotating shaft according to the present utility model.

Reference numerals:

1. a base; 11. a guide rail;

2. a limiting mechanism; 21. a sliding assembly; 211. a slide block; 212. a mounting plate; 213. a resisting member; 22. a stop block;

3. an induction assembly; 31. an inductive element; 32. a trigger;

4. a blocking arm; 41. a mounting part; 42. an abutting portion;

5. a rotating shaft;

6. a buffer reset assembly; 61. a connecting piece; 62. an elastic member; 63. and (5) connecting bolts.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, the terms "upper," "lower," "left," "right," and the like are used for convenience of description and simplicity of operation based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1, the present embodiment provides a limiting device for controlling rotation of a rotating shaft, which includes a base 1, a limiting mechanism 2, a sensing assembly 3, and a blocking arm 4. The limiting mechanism 2 comprises a sliding component 21 and a stop block 22, the stop block 22 is arranged on the base 1, the sliding component 21 is arranged on the base 1 in a sliding mode, and the sliding component 21 can be abutted against the stop block 22. The sensing component 3 comprises a sensing element 31 and a trigger piece 32, the sensing element 31 is arranged on the base 1, and the trigger piece 32 is arranged on the sliding component 21, so that the sliding component 21 drives the trigger piece 32 to move close to or far away from the sensing element 31, and the sensing element 31 senses the trigger piece 32. The baffle arm 4 is arranged on the outer circumferential surface of the rotating shaft 5, and the rotating shaft 5 can drive the baffle arm 4 to move, so that the baffle arm 4 can be abutted with the sliding component 21 and drive the sliding component 21 to move.

When the motor drives the rotating shaft 5 to rotate, the blocking arm 4 moves to the position of the sliding component 21, and is abutted with the sliding component 21 to drive the sliding component 21 to move. The sliding component 21 drives the trigger piece 32 to move to the sensing area of the sensing element 31, the sensing element 31 senses the trigger piece 32 and feeds information back to an external controller, and the controller cuts off the power of the motor, so that the motor stops driving the rotating shaft 5. The rotation shaft 5 still continues to rotate under the action of inertia, that is, the sliding component 21 still continues to move for a certain distance until the sliding component 21 abuts against the stop block 22, so that the rotation shaft 5 is stationary. The rotating shaft 5 is stopped and limited by the sensing assembly 3 and the stop block 22, so that the rotating angle of the rotating shaft 5 is controlled more accurately, and the rotating shaft 5 is limited at a designated rotating position; and effectively prevents the problem of direct failure of the revolution control of the rotating shaft 5 due to failure of the electric signal of the induction component 3.

Further, the slide assembly 21 includes a slider 211, the base 1 is provided with a guide rail 11, the slider 211 is slidably engaged with the guide rail 11, and the slider 211 can abut against the stopper 22. The sliding assembly 21 slides on the base 1 more stably through the sliding fit of the guide rail 11 and the sliding block 211, so that the rotation angle of the rotating shaft 5 is controlled more accurately.

Further, the stopper 22 is detachably mounted on the guide rail 11, and the mounting position on the guide rail 11 is adjustable. The position of the stop block 22 on the guide rail 11 is regulated, so that the displacement of the sliding assembly 21 is controlled, and finally, the control of different rotation angles of the rotating shaft 5 is realized.

Specifically, the guide rail 11 is provided with a plurality of connection holes along its length direction, and the stopper 22 is bolted to the guide rail 11 to facilitate the installation of the stopper 22.

Further, the sliding assembly 21 further includes a mounting plate 212 and a blocking member 213, the mounting plate 212 is disposed on the slider 211, the blocking member 213 is detachably mounted on the mounting plate 212, and the blocking member 213 is used for abutting against the blocking arm 4. The abutting piece 213 collides with the blocking arm 4 for a plurality of times, so that the abutting piece 213 is worn, and the rotation angle of the rotating shaft 5 cannot be accurately controlled.

Further, two stoppers 22 are provided, and the two stoppers 22 are disposed at intervals on both sides of the sliding direction of the sliding assembly 21. Thereby, limit control of clockwise or counterclockwise rotation of the rotation shaft 5 is achieved.

Optionally, the sensing assembly 3 is provided with a group, when the trigger piece 32 is at the initial position, the trigger piece 32 is located in the sensing area of the sensing element 31, and when the sliding assembly 21 drives the trigger piece 32 to move and the trigger piece 32 leaves the sensing area of the sensing element 31, the sensing element 31 cannot sense the trigger piece 32, and the sensing element 31 feeds back information to power off the motor.

Preferably, two sensing elements 31 are provided in the present embodiment, and the two sensing elements 31 are disposed at intervals on both sides of the sliding direction of the sliding assembly 21. When the sliding component 21 drives the trigger piece 32 to move to the sensing area of the sensing element 31, the sensing element 31 senses the trigger piece 32, the sensing element 31 feeds back information to power off the motor, the mounting positions of the two sensing elements 31 on the base 1 are adjustable, the displacement of the sliding component 21 can be accurately regulated, and the rotation angle of the rotating shaft 5 can be accurately controlled.

Further, the sensing element 31 is a groove-type photoelectric device, the trigger piece 32 is a strip-type plate, and the sliding assembly 21 can drive the strip-type plate to move into the sensing groove of the groove-type photoelectric device. The groove type photoelectric device has the advantages of quick response, no contact in detection and the like.

Further, as shown in fig. 2, the limiting device for controlling the rotation of the rotating shaft further includes a buffering reset assembly 6, the buffering reset assembly 6 includes a connecting piece 61 and two elastic pieces 62, the connecting piece 61 is installed on the triggering piece 32, one ends of the two elastic pieces 62 are connected with the connecting piece 61, the other ends of the two elastic pieces 62 are connected to the base 1 at intervals along the sliding direction of the sliding assembly 21, and the connecting piece 61 is located between the two elastic pieces 62. When the blocking arm 4 drives the sliding component 21 to move, one elastic piece 62 stretches, and the other elastic piece 62 contracts, so that a buffer effect can be realized on the sliding component 21, and the collision force of the sliding block 211 and the stop block 22 is reduced. In addition, after the rotating shaft 5 rotates to reset, the blocking arm 4 is not abutted with the sliding component 21 any more, and the sliding component 21 can realize automatic reset under the action of the elastic force of the buffering reset component 6.

Further, the buffering reset assembly 6 further comprises a connecting bolt 63, one connecting bolt 63 is arranged on the connecting piece 61, two connecting bolts 63 are arranged on the base 1 at intervals, the elastic piece 62 is a tension spring, hanging rings at one end of the two tension springs are sleeved with the connecting bolts 63 on the connecting piece 61, and hanging rings at the other ends of the two tension springs are sleeved with the connecting bolts 63 on the base 1 respectively. The scheme can enable the installation of the buffering reset assembly 6 to be more convenient through the installation cooperation of the tension spring and the connecting bolt 63.

Further, the stopper arm 4 includes a mounting portion 41 and an abutment portion 42, the mounting portion 41 is provided on the outer circumferential surface of the rotation shaft 5, the abutment portion 42 is detachably mounted on the mounting portion 41, and the abutment portion 42 is for abutting against the slide assembly 21. The resisting piece 213 collides with the resisting arm 4 for a plurality of times, so that the resisting arm 4 is worn, the control precision of the rotation angle of the rotating shaft 5 is influenced, the abutting part 42 is detachably mounted, and the abutting part 42 can be conveniently replaced and maintained. In addition, the abutting portions 42 with different widths can be replaced, so that more accurate control of the rotation angle of the rotating shaft 5 is further realized.

Note that in the description of this specification, a description referring to terms "some embodiments", "other embodiments", and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description is only of the preferred embodiments of the utility model and the technical principles employed. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. A stop device for controlling pivot gyration, its characterized in that includes:

a base (1);

the limiting mechanism (2) comprises a sliding assembly (21) and a stop block (22), wherein the stop block (22) is arranged on the base (1), the sliding assembly (21) is arranged on the base (1) in a sliding manner, and the sliding assembly (21) can be abutted to the stop block (22);

the sensing assembly (3) comprises a sensing element (31) and a trigger piece (32), wherein the sensing element (31) is arranged on the base (1), and the trigger piece (32) is arranged on the sliding assembly (21) so that the sliding assembly (21) drives the trigger piece (32) to move close to or far away from the sensing element (31);

the baffle arm (4) is arranged on the outer circumferential surface of the rotating shaft (5), and the rotating shaft (5) can drive the baffle arm (4) to move, so that the baffle arm (4) can be abutted with the sliding assembly (21) and drive the sliding assembly (21) to move.

2. The limiting device for controlling rotation of a rotating shaft according to claim 1, wherein the sliding assembly (21) comprises a sliding block (211), a guide rail (11) is arranged on the base (1), the sliding block (211) is in sliding fit with the guide rail (11), and the sliding block (211) can be abutted with the stop block (22).

3. A spacing device for controlling the rotation of a rotating shaft according to claim 2, characterized in that the stop (22) is detachably mounted on the guide rail (11) and the mounting position on the guide rail (11) is adjustable.

4. The limiting device for controlling rotation of a rotating shaft according to claim 2, wherein the sliding assembly (21) further comprises a mounting plate (212) and a resisting member (213), the mounting plate (212) is disposed on the sliding block (211), the resisting member (213) is detachably mounted on the mounting plate (212), and the resisting member (213) is used for abutting against the resisting arm (4).

5. The limiting device for controlling rotation of a rotating shaft according to any one of claims 1 to 4, further comprising a buffer reset assembly (6), wherein the buffer reset assembly (6) comprises a connecting piece (61) and two elastic pieces (62), the connecting piece (61) is mounted on the triggering piece (32), one ends of the two elastic pieces (62) are connected with the connecting piece (61), the other ends of the two elastic pieces (62) are connected to the base (1) at intervals along the sliding direction of the sliding assembly (21), and the connecting piece (61) is located between the two elastic pieces (62).

6. The limiting device for controlling rotation of a rotating shaft according to claim 5, wherein the buffer reset assembly (6) further comprises a connecting bolt (63), one connecting bolt (63) is arranged on the connecting piece (61), two connecting bolts (63) are arranged on the base (1) at intervals, the elastic piece (62) is a tension spring, hanging rings at one end of the two tension springs are sleeved with the connecting bolts (63) on the connecting piece (61), and hanging rings at the other end of the two tension springs are sleeved with the connecting bolts (63) on the base (1) respectively.

7. The limiting device for controlling the rotation of a rotating shaft according to any one of claims 1 to 4, wherein two stoppers (22) are provided, and the two stoppers (22) are disposed at intervals on both sides of the sliding direction of the sliding assembly (21).

8. The limiting device for controlling rotation of a rotating shaft according to claim 7, wherein two sensing elements (31) are provided, and the two sensing elements (31) are arranged at two sides of the sliding direction of the sliding assembly (21) at intervals.

9. The limiting device for controlling rotation of a rotating shaft according to any one of claims 1 to 4, wherein the sensing element (31) is a groove type photoelectric sensor, the triggering piece (32) is a strip-shaped plate, and the sliding component (21) can drive the strip-shaped plate to move into the sensing groove of the groove type photoelectric sensor.

10. The limiting device for controlling rotation of a rotating shaft according to any one of claims 1 to 4, wherein the blocking arm (4) includes a mounting portion (41) and an abutment portion (42), the mounting portion (41) is disposed on an outer circumferential surface of the rotating shaft (5), the abutment portion (42) is detachably mounted on the mounting portion (41), and the abutment portion (42) is configured to abut against the sliding assembly (21).