CN217032980U - Detection device - Google Patents

Abstract

The present invention provides a detection device, including: a placement area for placing an object to be detected; and a position detection unit; wherein the position detection unit includes: the detection piece can move towards a preset position in the placing area and can be attached to the outer surface of the piece to be detected at the preset position; the driving component drives the detection piece to move towards the preset position and is connected with the detection piece; and the sensing assembly is arranged on the detection piece and/or the driving assembly and is used for detecting that the detection piece is attached to the outer surface of the piece to be detected at the preset position. The sensing assembly can generate a sensing signal according to one or more detection results of whether the detection piece moves to be attached to the piece to be detected or not when the detection piece moves to be attached to the piece to be detected or whether the distance moved when the detection piece is attached to the piece to be detected is the predetermined distance. Through this detection device, can treat that the detection piece carries out automatic fool-proof detection, not only can improve detection efficiency, can also improve the degree of accuracy that detects, reduce artifical intensity of labour who detects.

Description

Detection device

Technical Field

The utility model relates to the technical field of processing and manufacturing, in particular to a detection device.

Background

Along with the development of automation technology, the demand for fool-proof detection of target parts such as material trays is gradually increased, so that the placing positions of the target parts such as material trays meet the demand. However, the existing fool-proof detection mode is mostly manual detection, which has high labor intensity and is easy to make mistakes, and thus the processing yield and processing efficiency are affected.

SUMMERY OF THE UTILITY MODEL

To at least partially solve the problems in the prior art, the present invention provides a detection apparatus, comprising: a placing area for placing the piece to be detected; the position detection unit is arranged on the periphery of the placement area; wherein, the position detection unit includes: the detection piece can move towards a preset position in the placing area and can be attached to the outer surface of the piece to be detected at the preset position; the driving component drives the detection piece to move towards the preset position and is connected with the detection piece; and the sensing assembly is arranged on the detection piece and/or the driving assembly and is used for detecting that the detection piece is attached to the outer surface of the piece to be detected at the preset position.

Illustratively, the drive assembly includes: the cylinder, by the flexible piston rod of cylinder drive, the one end and the cylinder of piston rod are connected, and the other end of piston rod is connected the detection piece.

Illustratively, the sensing assembly includes: a first sensing element; and the second sensing element is used for sensing the first sensing element, one of the first sensing element and the second sensing element is relatively fixed with the detection piece, and the other one of the first sensing element and the second sensing element is relatively fixed with the placement area, wherein when the detection piece is attached to the outer surface of the piece to be detected at the preset position, the first sensing element is positioned in the sensing area of the second sensing element.

Illustratively, the first sensing element includes a magnetic piece and the second sensing element includes a magnetic sensor.

Illustratively, the magnetic member includes an electromagnet or a permanent magnet.

Illustratively, the drive assembly includes: the device comprises an air cylinder and a piston rod driven by the air cylinder to stretch, wherein one end of the piston rod is connected with the air cylinder, and the other end of the piston rod is connected with the detection piece; the first sensing element is fixed on the cylinder, and the second sensing element is fixed on the piston rod.

The detecting piece comprises a contact surface for being attached to the piece to be detected, and the contact surface is planar or a V-shaped surface formed by two intersecting surfaces.

Illustratively, the number of the position detection units is at least two.

Illustratively, the piece to be detected comprises at least two detection areas for being attached to the detection piece, the at least two position detection units comprise a first position detection unit and a second position detection unit, and the first position detection unit and the second position detection unit are respectively located at positions corresponding to the two detection areas, so that the detection piece of the first position detection unit and the detection piece of the second position detection unit are respectively attached to the two detection areas.

Illustratively, the moving direction of the detecting member in the first position detecting unit and the moving direction of the detecting member in the second position detecting unit form an included angle.

According to the detection device provided by the utility model, the placing area can be used for placing the piece to be detected. A position detection unit is provided around the placement area. The detecting member in the position detecting unit is movable toward a predetermined position within the placing region. The sensing assembly can generate a sensing signal according to one or more detection results of whether the detection piece moves to be attached to the piece to be detected or not when the detection piece moves to be attached to the piece to be detected or whether the distance moved when the detection piece is attached to the piece to be detected is the predetermined distance. According to the sensing signal, a user can judge whether the piece to be detected is in a preset position or not and whether the piece to be detected is attached to the piece to be detected or not so as to achieve the purpose of foolproof detection. Through this detection device, not only can improve detection efficiency, can also improve the degree of accuracy that detects, reduce the intensity of labour that artifical measuring detected.

A series of concepts in a simplified form are introduced in the context of the present invention, which will be described in further detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are included to provide a further understanding of the utility model. The drawings illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model. In the drawings there is shown in the drawings,

FIG. 1 is a perspective view of a detection device according to an exemplary embodiment of the present invention;

fig. 2 is a perspective view of a first position detecting unit according to an exemplary embodiment of the present invention;

fig. 3 is a perspective view of a second position detection unit according to an exemplary embodiment of the present invention; and

fig. 4 is a perspective view of an object to be inspected according to an exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. a placement area; 200. a position detection unit; 201. a first position detection unit; 202. a second position detection unit; 210. 210', a detection member; 211. 211', a contact surface; 220. 220', a drive assembly; 300. a piece to be detected; 301. 301', the surface to be contacted.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the utility model. One skilled in the art, however, will understand that the following description merely illustrates a preferred embodiment of the utility model and that the utility model may be practiced without one or more of these details. In other instances, well known features have not been described in detail so as not to obscure the utility model.

The present invention provides a detection apparatus, as shown in fig. 1, the detection apparatus may include a placement area 100 and a position detection unit 200.

The placement area 100 may be used to place an object 300 to be detected, as shown in fig. 4. The placement area 100 may be disposed within a corresponding work area, such as in the embodiment shown in fig. 1, the placement area 100 may be disposed on a work surface, i.e., the area of the work surface where the dashed line is located may be defined as the placement area 100. The shape and size of the placement area 100 can be matched with the shape and size of the object 300 to be placed, so that the object 300 to be placed can be smoothly placed in the placement area 100. Preferably, a fixing structure may be disposed around the placing area 100, for example, clamping fixing structures are disposed on two sides of the placing area 100, so as to fix the to-be-detected piece 300 in the placing area 100, and the clamping fixing structures may adopt existing and commercially common clamping fixing structures, which belong to the prior art and are not described herein again.

The position detecting unit 200 may be used to detect whether the object 300 to be detected is at a predetermined position within the placing region 100. The predetermined position may include the spatial coordinates of the object 300 to be detected in the placement area 100, the placement angle of the object 300 to be detected in the placement area 100, and the like. The position detecting unit 200 may be disposed at the periphery of the placing region 100, such as the upper portion of the placing region 100 or the periphery of the placing region 100. Of course, the position detection unit 200 may also be partially or entirely disposed inside the placement area 100 without affecting the placement of the object 300 to be detected within the placement area 100.

As shown in fig. 2-3, the position detection unit 200 may include a detection member 210, a driving assembly 220, and a sensing assembly (not shown). The detection member 210 may move toward a predetermined position within the placement area 100 and may be attached to an outer surface of the member to be detected 300 at the predetermined position. The driving assembly 220 may be coupled to the sensing member 210 and drive the sensing member 210 to move toward a predetermined position. The sensing assembly may be disposed on one or more of the detection member 210 and the drive assembly 220. The sensing assembly may be used to detect whether the detection member 210 is attached to the outer surface of the member to be detected 300 at a predetermined position.

It should be noted that the detection manner of the sensing assembly for detecting whether the detection member 210 is attached to the outer surface of the member to be detected 300 at the predetermined position may include at least one of the following:

in the first way, the sensing assembly can detect whether the detecting member 210 can be just attached to the outer surface of the member 300 to be detected when moving a predetermined distance;

second, when the sensing member 210 is attached to the outer surface of the member 300 to be sensed, whether the sensing member 210 has moved exactly a predetermined distance is determined.

Based on the detection result, the sensing assembly can generate a sensing signal indicating whether the member 300 to be detected is at the predetermined position. During the process of detecting the object 300 by the position detecting unit 200, the driving component 220 can drive the detecting element 210 to move. The drive assembly 220 may include any type of drive assembly known in the art, such as one or more of a hydraulic assembly, a pneumatic assembly, a rack and pinion assembly, or a pulley mechanism, among others. The driving assembly 220 may drive the detecting member 210 to move toward a predetermined position. The manner of determining whether the detecting member 210 is attached to the member 300 to be detected may be various, for example, a contact switch may be disposed at an end of the detecting member 210, and when the detecting member 210 is attached to the member 300 to be detected, the contact switch is turned on. It is understood that the closing of the contact switch is only one embodiment for determining whether the detecting element 210 is attached to the detecting element 300, and in other embodiments, if the detecting element 300 and the detecting element 210 are both conductive bodies, a closed loop can be formed by using the attachment of the two elements as a determination condition. There are various ways to determine whether the detecting member moves a predetermined distance, for example, the moving distance of the detecting member 210 can be detected by a position sensor or a linear encoder.

In the embodiment shown in fig. 1, the working platform may be a conveying platform with conveying function, and the object 300 to be detected (not shown) may be fixed on the conveying platform and move along with the conveying platform. The conveying platform can drive the to-be-detected piece 300 to stop at any position where the to-be-detected piece needs to stop, for example, the to-be-detected piece 300 can stop between two position detection units, and of course, according to actual conditions, the to-be-detected piece 300 can also stop at a position near the front or the back of the position detection unit. The position detecting unit 200 may detect whether the to-be-detected member 300 is at a predetermined position when stopped. The detected content may include not only the spatial coordinates of the object 300 to be detected at the stop, but also the placement angle of the object 300 to be detected in the placement area 100.

In the process of detecting the to-be-detected member 300 by the position detecting unit 200, the driving assembly 220 can drive the detecting member 210 to move toward the predetermined position. When the detection manner of the sensing assembly is the first detection manner (i.e., whether the detection member 210 can be just attached to the outer surface of the member to be detected 300 when the detection member 210 moves a predetermined distance), the predetermined distance that the detection member 210 moves may be predetermined, that is, if the detection member 210 moves the predetermined distance if the detection member 300 is at a predetermined position, the detection member 210 may be attached to the member to be detected 300. Taking the sensing component as a contact switch disposed at the end of the detecting member 210 as an example, if the detecting member 300 is at a predetermined position, when the detecting member 210 is driven by the driving component 220 to move for a predetermined distance, the detecting member can be attached to the detecting member 300, and when the detecting member is attached to the detecting member, the contact switch is closed, so that the sensing component generates a sensing signal indicating that the detecting member 300 is at the predetermined position. If the object 300 to be detected is not located at the predetermined position, when the detecting element 210 is driven by the driving element 220 to move by the predetermined distance, the detecting element may not be attached to the object 300 to be detected, the contact switch is not closed, and the sensing element may not be able to generate the sensing signal indicating that the object 300 to be detected is located at the predetermined position.

When the detection mode of the sensing assembly is the second detection mode (i.e., whether the detection member 210 moves a predetermined distance when the detection member 210 is attached to the outer surface of the member 300), the detection member 210 moves toward the member 300 until the detection member 300 is attached. When the detecting member 210 is attached to the member 300 to be detected, the sensing assembly can detect the distance moved by the detecting member 210. When the moving distance of the detecting member 210 is just the predetermined distance, it indicates that the detecting member 300 is at the predetermined position, and the sensing component can send out a sensing signal indicating that the detecting member 300 is at the predetermined position. It is understood that the sensing assembly may also have the function of detecting whether the detecting member 210 is attached to the member 300 to be detected, and the function of detecting the moving distance of the detecting member 210.

It is understood that the path of the driving component 220 moving the detecting component 210 can not only move along a straight line, but also move along a curve, for example, the driving component 220 can move the detecting component 210 around an arc by a mechanism similar to a swing arm. In this embodiment, the sensing component is a contact switch, and the contact switch may include a pressing type contact switch, and may further include a touch type contact switch, etc.

According to the detecting device provided by the utility model, the placing area 100 can be used for placing the object 300 to be detected. A position detection unit 200 is disposed around the placement area 100. The detecting member 210 in the position detecting unit 200 is movable toward a predetermined position within the placing region 100. The sensing assembly may generate the sensing signal according to one or more of a detection result of whether the detecting member 210 is attached to the member to be detected 300 when the detecting member 210 moves a predetermined distance, or a detection result of whether the distance moved when the detecting member 210 is attached to the member to be detected is the predetermined distance. According to the sensing signal, the user can determine whether the to-be-detected piece 300 is in the predetermined position. Through the detection device, the detection piece 300 to be detected can be automatically detected, so that the detection efficiency can be improved, the detection accuracy can be improved, and the labor intensity of manual detection is reduced.

For example, as shown in fig. 2-3, the drive assembly 220, 220' may include a cylinder and a piston rod. The piston rod can be arranged in the cylinder, and the cylinder can drive the piston rod to stretch and retract. One end of the piston rod may be connected to the cylinder and the other end of the piston rod may be connected to the sensing member 210, 210'. The driving assembly 220, 220 'having the cylinder and the piston rod can drive the piston rod to extend and retract by the compressed air in the cylinder, so as to drive the detecting member 210, 210' to move. In other embodiments, the driving assembly 220, 220' may further include a hydraulic cylinder, a linear motor, or the like. In this embodiment, compared with a hydraulic cylinder, the driving medium in the cylinder 221 is compressed air, the use environment is clean and pollution-free, compared with a linear motor, the cost of the cylinder and the piston rod is low, and the product cost can be reduced.

For convenience of description, the following description of the driving assembly 220 is only given by way of example in fig. 2.

For example, the sensing assembly may include a first sensing element and a second sensing element. The second sensing element may be for sensing the first sensing element. One of the first sensing element and the second sensing element may be fixed opposite to the detecting member 210, and the other may be fixed opposite to the placement region 100. When the detecting member 210 is attached to the outer surface of the member 300 to be detected at the predetermined position, the first sensing element may be located in the sensing region of the second sensing element.

In embodiments where the drive assembly 220 comprises a cylinder and a piston rod, the first sensing element may comprise a magnetic member and the second sensing element may comprise a magnetic sensor. The magnetic member may be disposed on the detecting member 210, and the magnetic sensor may be disposed in the placing region 100, and in other embodiments, the magnetic member may be disposed in the placing region 100, and the magnetic sensor may be disposed on the detecting member 210. The detecting member 210 may also carry the magnetic member to move relative to the magnetic sensor along with the relative movement of the piston rod with respect to the cylinder. The detecting member 210 can move towards the direction of the member 300 to be detected, when the detecting member 210 is attached to the outer surface of the member 300 to be detected, whether the first sensing element senses the second sensing element or not is judged to be in the predetermined position, that is, whether the member to be detected is in the predetermined position or not is judged according to whether the first sensing element just enters the detection range of the second sensing element or not. If the second sensing element can sense the first sensing element, the piece 300 to be detected is judged to be in the preset position, otherwise, the piece 300 to be detected is judged not to be in the preset position. The sensing assembly combined by the magnetic part and the magnetic sensor can realize non-contact mounting, and compared with other sensing assemblies needing contact mounting, the sensing assembly can avoid abrasion and reduce friction resistance. Wherein, the magnetic part can include one or more of an electromagnet or a permanent magnet. The electromagnet can have magnetism under the condition of energization, and the electromagnet stops energization and then disappears. The permanent magnet may then be magnetic without being energized. The selection can be appropriately made by those skilled in the art according to the actual situation, depending on the use environment.

For example, the first sensing element may be fixed to the cylinder, and the second sensing element may be fixed to the piston rod. Since the cylinder is fixed at one side of the placing area, and thus the first sensing element is fixed relative to the placing area, the position of the detecting element 210 relative to the element 300 to be detected can also be reflected since the cylinder and the piston rod have relative motion when the driving assembly drives the detecting element 210 to move. In addition, since the first and second sensing elements are both disposed on the driving assembly 220, the integration of the driving assembly and the sensing assembly may be improved.

Illustratively, the detecting member 210 may include contact surfaces 211, 211' for engaging with the member 300 to be detected. The contact surface 211' may be planar, the contact surface 211 may be a V-shaped surface formed by two intersecting surfaces, and the contact surfaces may have both of the shapes.

In the embodiment shown in fig. 4, the member to be detected 300 may have a surface to be contacted 301, 301' shaped to correspond to the contact surface 211 of the detecting member 210. The inspection object 210 ' having the planar contact surface 211 ' can inspect the inspection object 300 having the planar contact surface 301 '. Correspondingly, the detecting member 210 with the V-shaped contact surface 211 can detect the object 300 to be detected with the V-shaped contact surface 301. The shape of the contact surface 211 of the detecting member 210 can be adapted according to the shape of the surface 301 to be contacted of the member 300 to be detected, so as to improve the effect of the detection result.

Taking the detecting element 210 with the V-shaped contact surface 211 as an example, when the position detecting unit 200 detects the detecting element 300, the cylinder can drive the piston rod to drive the detecting element 210 to move toward the detecting element 300. When the detecting member 210 is fitted to the member 300 to be detected, the sensing assembly will generate a corresponding sensing signal. If the member 300 to be detected is at the predetermined position, the V-shaped surface of the contact surface 211 and the V-shaped surface of the surface 301 to be contacted can be jointed. At this time, the distance that the sensing component detects that the detecting member 210 moves can indicate that the member 300 to be detected is in the predetermined position, and then the sensing component will generate a sensing signal indicating that the member 300 to be detected is in the predetermined position. When the object 300 to be detected is not in the predetermined position, the sensing assembly will be able to generate a sensing signal indicating that the object 300 to be detected is not in the predetermined position or not. Because when the position of the piece 300 to be detected is not at the predetermined position or the angle at which the piece 300 to be detected is placed does not meet the required angle, the detecting piece 210 cannot be completely attached to the piece 300 to be detected, or the moving distance of the detecting piece 210 is not equal to the predetermined distance, the purpose of foolproof detection on the piece 300 to be detected can be achieved. The reason why the to-be-detected piece 300 is not located at the predetermined position may be that the detecting piece 210 is not perfectly attached to the to-be-detected piece 300, for example, in an embodiment where the contact surface 211 of the detecting piece 210 is a V-shaped surface, two planes of the V-shaped surface may both be attached to the to-be-contacted surface 301 of the to-be-detected piece 300, but the spatial coordinates of the to-be-detected piece 300 are shifted as a whole; it is also possible that the spatial coordinates of the piece 300 to be detected are correct, but that the piece 300 to be detected has an angle of deflection such that the contact surface 211 of the piece 210 to be detected partially or not at all abuts the surface 301 to be contacted of the piece 300 to be detected, but does not abut perfectly, for example, in the embodiment in which the detection surface 211 of the piece 210 is V-shaped, only one surface abuts the surface 301 to be contacted of the piece 300 to be detected. In many cases, the distance that the sensing component detects that the detecting element 210 moves cannot indicate that the object 300 is at the predetermined position, and then the sensing component will generate a sensing signal indicating that the object 300 is not at the predetermined position or not generate a sensing signal.

Similarly, the detection principle of the detecting piece 210 ' with the planar contact surface 211 ' for the piece 300 to be detected with the planar contact surface 301 ' is basically the same, and is not described again. It is of course understood that the shape of the contact surface 211 is not limited to the above two cases, and may be different according to the shape of the surface to be contacted 301 of the member to be detected 300, such as an arc surface, a curved surface, and the like.

The detection piece 210 with the arrangement can be matched with the shape of the surface to be contacted 301 of the piece 300 to be detected, so that the accuracy of detecting whether the piece 300 to be detected is in a preset position is improved.

Illustratively, the number of the position detection units 200 may be at least two. In the embodiment shown in fig. 1, the number of the position detecting units 200 is two, and the two position detecting units are respectively arranged at two sides of the placing area 100, and can detect two surfaces to be contacted 301 and 301' of the piece to be detected 300. It is of course understood that the number of position detection units 200 may also be three, four or more. The position detecting unit 200 may be disposed at any position above or around the object 300 to be detected. The number of the position detection units 200 is increased, so that more to-be-contacted surfaces 301 of the to-be-detected piece 300 can be detected, the content of the detection result can be enriched, and the precision of the detection result is improved.

By way of example, the object 300 to be detected may comprise at least two detection areas for abutment with the detection element 210, namely the surfaces 301, 301' to be contacted as described above. The at least two position detecting units 200 may include a first position detecting unit 201 and a second position detecting unit 202. The first position detecting unit 201 and the second position detecting unit 202 may be respectively located at corresponding positions of the two detection regions, so that the detecting member 210 of the first position detecting unit 201 and the detecting member 210' of the second position detecting unit 202 are respectively attached to the two detection regions. As shown in fig. 4, the two detecting areas of the object 300 to be detected may be a plane and a V-shaped plane, respectively, wherein an included angle of the V-shaped plane may be 90 degrees. The two detection areas may correspond to the second position detection unit 202 and the first position detection unit 201, respectively. The sensing signal which is generated by any one of the position detection units and indicates that the to-be-detected piece 300 is not located at the preset position, and the contact surface 211 is not completely attached to the to-be-contacted surface 301, can indicate that the to-be-detected piece 300 is not located at the preset position, and the placing posture, such as an angle, of the to-be-detected piece 300 has a deviation, so that the purpose of foolproof detection on the to-be-detected piece 300 can be achieved. The accuracy of position detection and fool-proof detection of the piece 300 to be detected can be improved by arranging a plurality of position detection units 200.

Further, the moving direction of the detecting member in the first position detecting unit 201 and the moving direction of the detecting member in the second position detecting unit 202 may form an angle. By detecting the piece 300 to be detected from different directions, the accuracy of detecting whether the piece 300 to be detected is located at a predetermined position and fool-proof detection can be improved. As shown in fig. 1, the moving direction of the detection piece in the first position detection unit 201 is arranged at right angles to the moving direction of the detection piece in the second position detection unit 202. The predetermined position may be a position in the placement area where the object 300 to be detected needs to be placed, and preferably, the predetermined position may be a position located at the intersection of the moving directions of the two detecting members. Of course, in an embodiment not shown, the first position detecting unit 201 and the second position detecting unit 202 may be disposed opposite to each other or on the same side of the piece 300 to be detected, and the like, according to the shape of the piece to be detected and the detection content.

In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front", "rear", "upper", "lower", "left", "right", "lateral", "vertical", "horizontal" and "top", "bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and in the case of not making a reverse explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior of the respective components as they relate to their own contours.

For ease of description, relative terms of regions such as "above … …", "above … …", "on … …", "above", etc. may be used herein to describe the regional positional relationship of one or more components or features to other components or features shown in the figures. It is to be understood that the relative terms of the regions are intended to encompass not only the orientation of the element as depicted in the figures, but also different orientations in use or operation. For example, if an element in the figures is turned over in its entirety, elements "above" or "over" other elements or features would include elements "below" or "beneath" other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the utility model to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, all of which fall within the scope of the present invention as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. A detection device, comprising:

a placement area for placing an object to be detected; and

the position detection unit is arranged on the periphery of the placement area; wherein the position detection unit includes:

the detection piece can move towards a preset position in the placing area and can be attached to the outer surface of the piece to be detected at the preset position;

the driving assembly is used for driving the detection piece to move towards the preset position and is connected with the detection piece; and

and the sensing assembly is arranged on the detection piece and/or the driving assembly and is used for detecting that the detection piece is attached to the outer surface of the piece to be detected at the preset position.

2. The detection apparatus according to claim 1,

the drive assembly includes: the detection device comprises an air cylinder and a piston rod driven by the air cylinder to stretch, wherein one end of the piston rod is connected with the air cylinder, and the other end of the piston rod is connected with the detection piece.

3. The detecting device according to claim 1,

the sensing assembly includes:

a first sensing element; and

a second sensing element for sensing the first sensing element, one of the first sensing element and the second sensing element being fixed relative to the detecting member and the other being fixed relative to the placement area,

when the detection piece is attached to the outer surface of the piece to be detected at the preset position, the first sensing element is located in the sensing area of the second sensing element.

4. The detection apparatus according to claim 3,

the first sensing element includes a magnetic member and the second sensing element includes a magnetic sensor.

5. The detection device according to claim 4, wherein the magnetic member comprises an electromagnet or a permanent magnet.

6. The detection device of claim 3, wherein the drive assembly comprises: the device comprises an air cylinder and a piston rod driven by the air cylinder to stretch, wherein one end of the piston rod is connected with the air cylinder, and the other end of the piston rod is connected with the detection piece;

the first sensing element is fixed on the cylinder, and the second sensing element is fixed on the piston rod.

7. The detection device according to claim 1, wherein the detection member includes a contact surface for engaging with the member to be detected, and the contact surface is planar or is a V-shaped surface formed by two intersecting surfaces.

8. The detecting device according to claim 1, wherein the number of the position detecting units is at least two.

9. The detecting device according to claim 8, wherein the member to be detected includes at least two detecting regions for being attached to the detecting member, and the at least two position detecting units include a first position detecting unit and a second position detecting unit, and the first position detecting unit and the second position detecting unit are respectively located at positions corresponding to the two detecting regions, so that the detecting member of the first position detecting unit and the detecting member of the second position detecting unit are respectively attached to the two detecting regions.

10. The detecting device for detecting the rotation of a motor rotor according to claim 9, wherein the moving direction of the detecting member in the first position detecting unit forms an included angle with the moving direction of the detecting member in the second position detecting unit.

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