Detection device

Abstract

The invention provides a detection device, and the device comprises a body part; a power connection terminal; the abutting assembly is movably arranged on the body part, when the abutting assembly is located at the abutting position, the abutting assembly can be matched with the power connection terminal in an abutting mode so that the power connection terminal and the detection terminal can be kept in a conduction state, and when the abutting assembly is located at the separation position, the abutting assembly is separated from the power connection terminal so that the power connection terminal can be separated from the detection terminal; the positioning assembly is movably arranged on the body part or the abutting assembly, when the positioning assembly is located at the positioning position, the positioning assembly is matched with the abutting assembly in a positioning mode so that the position of the abutting assembly can be kept unchanged, and when the positioning assembly is located at the unlocking position, the positioning assembly is matched with the abutting assembly in a positioning mode. The positioning assembly and the abutting assembly are separated from positioning fit so that the abutting assembly can move. According to the technical scheme, the problem of unstable connection of the detection device and the electric equipment in the related technology can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a detection device. Background Art

[0002] Three-phase phase sequence detection is a very important task in the power system. It can ensure the correct phase sequence in the three-phase circuit, thereby ensuring the normal operation of the power system. Phase sequence errors may cause motor reversal, equipment damage, and even accidents. Therefore, phase sequence detection is crucial for the power system. The principle of three-phase phase sequence detection is mainly based on the phase relationship in the three-phase circuit.

[0003] In the related art, when detecting the three-phase sequence, the staff needs to hold the detection device and then connect it to the electrical equipment to be detected to detect the three-phase sequence. When the staff holds the detection device, it is inconvenient to connect the detection device and the electrical equipment. In addition, when the staff connects the detection device and the electrical equipment, it is inconvenient to fix the connection between the detection device and the electrical equipment, which may cause unstable connection, resulting in poor connection effect and affecting the detection effect. Summary of the invention

[0004] The main purpose of the present invention is to provide a detection device to solve the problem of unstable connection between the detection device and the electrical equipment in the related art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a detection device, which is connected to a detection terminal of an electrical equipment to detect the three-phase phase sequence of the electrical equipment, and the detection device includes: a main body; an electrical terminal, which is arranged on the main body and used to be connected to the detection terminal; a resisting component, which is movably arranged on the main body, and the resisting component has a resisting position and a separation position. When the resisting component is at the resisting position, the resisting component can resist and cooperate with the electrical terminal so that the electrical terminal and the detection terminal remain in a conductive state. When the resisting component is at the separation position, the resisting component is separated from the electrical terminal so that the electrical terminal can be separated from the detection terminal; a positioning component, which is movably arranged on the main body or on the resisting component, and the positioning component has a positioning position and an unlocking position. When the positioning component is at the positioning position, the positioning component is positioned and cooperated with the resisting component so that the resisting component remains in position unchanged. When the positioning component is at the unlocking position, the positioning component is disengaged from the resisting component so that the resisting component can move.

[0006] Furthermore, the abutting assembly includes a supporting structure movable in a vertical direction and an abutting structure arranged at the top end of the supporting structure, the supporting structure is connected to the main body, and the positioning assembly can be positioned or disengaged with the supporting structure.

[0007] Further, the abutting structure includes a mounting block and a abutting block movably arranged on the mounting block, the mounting block is connected to the supporting structure, the detection terminal includes a first detection terminal, the power terminal includes a first power terminal corresponding to the first detection terminal, when the abutting assembly is located at the abutting position, the abutting block has a first abutting position and a first disengagement position, when the abutting block is located at the first abutting position, the abutting block abuts the first power terminal so that the first power terminal and the first detection terminal remain in a conductive state, when the abutting block is located at the first disengagement position, the abutting block is separated from the first power terminal.

[0008] Furthermore, the abutting structure also includes a abutting arm, which is rotatably arranged on the mounting block, and the abutting arm is located on the outside of the abutting block. The detection terminal also includes a second detection terminal spaced apart from the first detection terminal, and the power terminal also includes a second power terminal corresponding to the second detection terminal. When the abutting assembly is located at the abutting position, the abutting arm has a second abutting position and a second disengaged position. When the abutting arm is located at the second abutting position, the abutting arm abuts the second power terminal so that the second power terminal and the second detection terminal remain in a conductive state. When the abutting arm is located at the second disengaged position, the abutting arm is separated from the second power terminal.

[0009] Furthermore, the abutting structure also includes a movably arranged retaining member, which can abut against the lower surface of the abutting arm to keep the abutting arm in the second abutting position, and the retaining member moves and separates from the abutting arm so that the abutting arm switches from the second abutting position to the second disengaged position under the action of gravity.

[0010] Furthermore, the supporting structure includes an outer sleeve and a sliding rod which are nested, one of the outer sleeve and the sliding rod is connected to the abutting structure, and the other of the outer sleeve and the sliding rod is connected to the main body.

[0011] Furthermore, the positioning assembly includes an operating rod and a latch, the operating rod is connected to the outer sleeve, the sliding rod is provided with a plurality of sockets arranged at intervals along the axial direction of the sliding rod, the latch is movably provided on the operating rod, when the positioning assembly is in the positioning position, the latch is plugged into and matched with a socket so that the outer sleeve and the sliding rod maintain their positions unchanged, when the positioning assembly is in the unlocking position, the latch is separated from the socket so that the outer sleeve and the sliding rod can slide relative to each other.

[0012] Furthermore, the positioning assembly also includes a rotating drum sleeved on the operating rod, the rotating drum is connected to the latch bearing, the rotating drum is threadedly connected to the operating rod, and the latch is driven to move when the rotating drum rotates.

[0013] Furthermore, the detection device also includes a strap and a length adjustment structure, a storage space for accommodating the arm is formed between the strap and the main body, the first end of the strap is connected to the main body, the main body has an open groove, the length adjustment structure is telescopically arranged in the open groove and connected to the second end of the strap, and the length adjustment structure can adjust the size of the storage space when it is telescopic.

[0014] Furthermore, the detection device also includes a positioning screw, the length adjustment structure includes a connecting block, and the connecting block is provided with a slide groove extending along the telescopic direction of the length adjustment structure, the slide groove includes a shallow groove section and a deep groove section which are connected to each other, the deep groove section is located on the outside of the shallow groove section, and the positioning screw is movably inserted into the main body, and the positioning screw has an operating end located outside the main body and a mating end located in the open groove, and the mating end can be mated with the shallow groove section or the deep groove section. When the mating end is mated with the shallow groove section, the connecting block can move, and when the mating end is mated with the deep groove section, the connecting block maintains its position unchanged.

[0015] By applying the technical solution of the present invention, the detection device is connected to the detection terminal of the electrical equipment to detect the three-phase phase sequence of the electrical equipment. The main body provides an installation basis for other components of the detection device and realizes the function of the detection device to detect the three-phase phase sequence; the power terminal is arranged on the main body and is used to be connected with the detection terminal; the abutting component is movably arranged on the main body, and the abutting component has a abutting position and a separation position. When the abutting component is in the abutting position, the abutting component can abut against the power terminal. At this time, the abutting component gives the power terminal a abutting force, so that the power terminal and the detection terminal are stably connected, and then the power terminal and the detection terminal are kept in a conductive state, thereby reducing the possibility of poor contact between the detection device and the electrical equipment, so that when the abutting component is in the separation position , the push-up assembly is separated from the power terminal, so that the power terminal can be separated from the detection terminal, so that the detection device and the electrical equipment can be separated; the positioning assembly is movably arranged on the main body or on the push-up assembly, and the positioning assembly has a positioning position and an unlocking position. When the positioning assembly is located at the positioning position, the positioning assembly and the push-up assembly are positioned and matched, so that the push-up assembly remains in the same position. If the push-up assembly is switched to the push-up position and then the positioning assembly is switched to the positioning position, the push-up assembly can be kept in the push-up position. When the push-up assembly needs to be moved, the positioning assembly is located in the unlocking position, and the positioning assembly and the push-up assembly are disengaged from the positioning cooperation, so that the push-up assembly can be moved, so that the push-up assembly can switch positions. Through the cooperation of the push-up assembly and the positioning assembly, the push-up assembly can be stably maintained in the push-up position, thereby ensuring that the detection device and the electrical equipment are stably connected and in a stable conductive state. Therefore, the technical solution of the present application can effectively solve the problem of unstable connection between the detection device and the electrical equipment in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a detection device according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 A schematic diagram of the three-dimensional structure of the detection device from another angle;

[0019] Figure 3 Shows Figure 1 A schematic diagram of the three-dimensional structure of the abutment component and the positioning component of the detection device;

[0020] Figure 4 Shows Figure 1 A schematic diagram of the three-dimensional structure of the supporting structure of the detection device;

[0021] Figure 5 Shows Figure 4 A schematic diagram of the three-dimensional structure of the supporting structure from another angle.

[0022] The above drawings include the following reference numerals:

[0023] 10. Main body; 11. Opening slot;

[0024] 20. Power terminal; 21. First power terminal; 22. Second power terminal;

[0025] 30. Push-up assembly; 31. Support structure; 311. Outer sleeve; 312. Slide rod; 32. Push-up structure; 321. Mounting block; 322. Push-up block; 323. Push-up arm; 324. Holder; 3241. Compression spring; 3242. Limit block; 3243. Guide rod; 3244. Guide block; 3245. Pull ring; 325. Handle; 326. Guide rod; 327. Guide block;

[0026] 40. Positioning assembly; 41. Operating lever; 42. Latch; 43. Rotating drum;

[0027] 51. Binding strap; 52. Length adjustment structure; 521. Connecting block; 53. Positioning screw;

[0028] 6. Accommodate space. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0032] like Figures 1 to 5As shown, the present application provides a detection device, which is connected to the detection terminal of the electrical equipment to detect the three-phase phase sequence of the electrical equipment. The embodiment of the detection device of the present application includes: a main body 10, a power terminal 20, a push-up assembly 30, and a positioning assembly 40; the power terminal 20 is arranged on the main body 10 and is used to be connected to the detection terminal; the push-up assembly 30 is movably arranged on the main body 10, and the push-up assembly 30 has a push-up position and a separation position. When the push-up assembly 30 is at the push-up position, the push-up assembly 30 can push against the power terminal 20 to make the power terminal 20 and the detection terminal maintain contact. In the on state, when the push-up assembly 30 is located in the separation position, the push-up assembly 30 is separated from the power terminal 20 so that the power terminal 20 can be separated from the detection terminal; the positioning assembly 40 is movably arranged on the main body 10 or on the push-up assembly 30, and the positioning assembly 40 has a positioning position and an unlocking position. When the positioning assembly 40 is located in the positioning position, the positioning assembly 40 is positioned and matched with the push-up assembly 30 so that the push-up assembly 30 maintains the same position. When the positioning assembly 40 is located in the unlocking position, the positioning assembly 40 is disengaged from the push-up assembly 30 so that the push-up assembly 30 can move.

[0033] By applying the technical solution of this embodiment, the detection device is connected to the detection terminal of the electrical equipment to detect the three-phase phase sequence of the electrical equipment. The main body 10 provides an installation basis for other components of the detection device and realizes the function of the detection device to detect the three-phase phase sequence; the power terminal 20 is arranged on the main body 10 and is used to be connected to the detection terminal; the abutting component 30 is movably arranged on the main body 10, and the abutting component 30 has a abutting position and a separation position. When the abutting component 30 is in the abutting position, the abutting component 30 can abut against the power terminal 20. At this time, the abutting component 30 gives the power terminal 20 a abutting force, so that the power terminal 20 and the detection terminal are stably connected, and then the power terminal 20 and the detection terminal are kept in a conductive state, thereby reducing the possibility of poor contact between the detection device and the electrical equipment. When the abutting component 30 is in the separation position, the abutting component 3 0 is separated from the power terminal 20, so that the power terminal 20 can be separated from the detection terminal, so that the detection device and the electrical equipment can be separated; the positioning component 40 is movably arranged on the main body 10 or on the resisting component 30, and the positioning component 40 has a positioning position and an unlocking position. When the positioning component 40 is located at the positioning position, the positioning component 40 and the resisting component 30 are positioned and matched, so that the resisting component 30 remains unchanged in position. If the resisting component 30 is switched to the resisting position, and then the positioning component 40 is switched to the positioning position, the resisting component 30 can be kept in the resisting position. When the resisting component 30 needs to be moved, the positioning component 40 is located in the unlocking position, and the positioning component 40 and the resisting component 30 are separated from the positioning cooperation, so that the resisting component 30 can be moved, so that the resisting component 30 can switch its position. Through the cooperation of the resisting component 30 and the positioning component 40, the resisting component 30 can be kept stably in the resisting position, thereby ensuring that the detection device and the electrical equipment are stably connected and in a stable conductive state. Therefore, the technical solution of this embodiment can effectively solve the problem of unstable connection between the detection device and the electrical equipment in the related art.

[0034] like Figures 1 to 5 As shown, the abutting assembly 30 includes a supporting structure 31 movable in the vertical direction and an abutting structure 32 arranged at the top of the supporting structure 31, the supporting structure 31 is connected to the main body 10, and the positioning assembly 40 can be positioned or separated from the supporting structure 31. Specifically, the supporting structure 31 can support the abutting structure 32 on the one hand, and can drive the abutting structure 32 to move on the other hand, so that the abutting structure 32 can abut against the electrical terminal 20 or not abut against the electrical terminal 20, so as to realize the switching of the abutting assembly 30 between the abutting position and the separated position.

[0035] like Figures 1 to 5As shown, the abutting structure 32 includes a mounting block 321 and an abutting block 322 movably arranged on the mounting block 321, the mounting block 321 is connected to the supporting structure 31, the detection terminal includes a first detection terminal, and the power terminal 20 includes a first power terminal 21 corresponding to the first detection terminal. When the abutting assembly 30 is located at the abutting position, the abutting block 322 has a first abutting position and a first disengaged position. When the abutting block 322 is located at the first abutting position, the abutting block 322 abuts against the first power terminal 21 so that the first power terminal 21 and the first detection terminal remain in a conductive state. When the abutting block 322 is located at the first disengaged position, the abutting block 322 is separated from the first power terminal 21. Specifically, in the present embodiment, the detection terminal includes a first detection terminal, a second detection terminal and a third detection terminal, the first detection terminal is located between the second detection terminal and the third detection terminal, and correspondingly, the power terminal 20 includes a first power terminal 21, a second power terminal 22 and a third power terminal, and the detection terminals correspond to the power terminals one by one, so the first power terminal 21 is also located between the second power terminal 22 and the third power terminal. It should be noted that "the abutting component 30 is located at the abutting position" means that, at this time, the abutting component 30 can abut the positions of the three power terminals at the same time. In addition, when the abutting assembly 30 is located at the abutting position, the abutting block 322 has a first abutting position and a first disengaged position. When the abutting block 322 is located at the first abutting position, the abutting block 322 abuts against the first power terminal 21 so that the first power terminal 21 and the first detection terminal remain in a conductive state. When the abutting block 322 is located at the first disengaged position, the abutting block 322 is separated from the first power terminal 21. In this embodiment, a handle 325 is provided on the side of the abutting block 322 away from the first power terminal 21, a guide rod 326 is provided on the abutting block 322, and a guide block 326 is provided on the mounting block 321. 327, the guide rod 326 is penetrated by the guide block 327 so that the abutting block 322 can be moved, so that the abutting block 322 can be switched between the first abutting position and the first disengaged position. When the staff does not want to adjust the position of the abutting assembly 30, but needs to disengage the first power terminal 21 from the first detection terminal, the staff pulls the handle 325 to move the abutting block 322 in a direction away from the first power terminal 21, so that the abutting block 322 is switched from the first abutting position to the first disengaged position, so that the abutting block 322 no longer abuts the first power terminal 21.

[0036] like Figures 1 to 5As shown, the abutting structure 32 also includes an abutting arm 323, which is rotatably arranged on the mounting block 321, and the abutting arm 323 is located on the outer side of the abutting block 322. The detection terminal also includes a second detection terminal spaced apart from the first detection terminal, and the power terminal 20 also includes a second power terminal 22 corresponding to the second detection terminal. When the abutting assembly 30 is located at the abutting position, the abutting arm 323 has a second abutting position and a second disengaged position. When the abutting arm 323 is located at the second abutting position, the abutting arm 323 abuts the second power terminal 22 so that the second power terminal 22 and the second detection terminal remain in a conductive state. When the abutting arm 323 is located at the second disengaged position, the abutting arm 323 is separated from the second power terminal 22.

[0037] Specifically, in this embodiment, there are two abutting arms 323 and related structures matched therewith, which have similar structures and act on the second power terminal 22 and the third power terminal respectively; only one of them is used for description herein. When the resisting assembly 30 is in the resisting position, the resisting arm 323 has a second resisting position and a second disengaged position. When the resisting arm 323 is in the second resisting position, the resisting arm 323 resists the second power terminal 22 so that the second power terminal 22 and the second detection terminal remain in a conductive state. When the resisting arm 323 is in the second disengaged position, the resisting arm 323 is separated from the second power terminal 22. In this embodiment, the resisting arm 323 can be switched from the second resisting position to the second disengaged position under the action of its own gravity. When the staff does not want to adjust the position of the resisting assembly 30, but needs the second power terminal 22 to be disengaged from the second detection terminal, the resisting arm 323 can be switched from the second resisting position to the second disengaged position. The staff manually rotates the resisting arm 323 to switch the top arm 323 from the second disengaged position to the second resisting position.

[0038] like Figures 1 to 5As shown, the abutting structure 32 also includes a movably arranged retaining member 324, which can abut against the lower surface of the abutting arm 323 to keep the abutting arm 323 in the second abutting position, and the retaining member 324 moves and separates from the abutting arm 323 to switch the abutting arm 323 from the second abutting position to the second disengaged position under the action of gravity. The cam 3242 is provided with a spring 3241 which is adapted to move the stopper 3242 toward the stopper 321. The cam 3242 is adapted to move the stopper 3242 toward the stopper 321. The cam 3242 is adapted to move the stopper 3242 toward the stopper 321.

[0039] like Figures 1 to 5 As shown, the support structure 31 includes an outer sleeve 311 and a slide bar 312 arranged in a nested manner, one of the outer sleeve 311 and the slide bar 312 is connected to the abutting structure 32, and the other of the outer sleeve 311 and the slide bar 312 is connected to the main body 10. In this embodiment, the outer sleeve 311 is connected to the abutting structure 32, and the slide bar 312 is connected to the main body 10, and the outer sleeve 311 and the slide bar 312 have the advantage of simple structure.

[0040] like Figures 1 to 5 As shown, the positioning assembly 40 includes an operating rod 41 and a latch 42. The operating rod 41 is connected to the outer sleeve 311. The slide bar 312 is provided with a plurality of sockets spaced apart along the axial direction of the slide bar 312. The latch 42 is movably provided on the operating rod 41. When the positioning assembly 40 is located at the positioning position, the latch 42 is plugged into and matched with a socket so that the outer sleeve 311 and the slide bar 312 maintain their positions unchanged. When the positioning assembly 40 is located at the unlocking position, the latch 42 is separated from the socket so that the outer sleeve 311 and the slide bar 312 can slide relative to each other. Specifically, in this embodiment, there are two support structures 31, and the operating rod 41 is connected between the two outer sleeves 311. The staff can manually operate the operating rod 41 to allow the outer sleeve 311 and the sliding rod 312 to slide relative to each other; when the abutting assembly 30 is switched to the abutting position, the positioning assembly 40 is switched to the positioning position, and the pin 42 is plugged into a socket to enable the outer sleeve 311 and the sliding rod 312 to maintain their positions unchanged, thereby allowing the abutting assembly 30 to remain in the abutting position.

[0041] like Figures 1 to 5 As shown, the positioning assembly 40 further includes a rotating drum 43 sleeved on the operating rod 41, the rotating drum 43 is connected to the latch 42 by a bearing, the rotating drum 43 is threadedly connected to the operating rod 41, and the rotating drum 43 can drive the latch 42 to move when rotating. Specifically, the staff rotates the rotating drum 43 so that the rotating drum 43 can move along the extension direction of the operating rod 41, and the rotating drum 43 is connected to the latch 42 by a bearing, so that the latch 42 can move with the rotating drum 43, thereby realizing the plugging or disconnection with the plug hole.

[0042] like Figures 1 to 5 As shown, the detection device further includes a strap 51 and a length adjustment structure 52. An accommodation space 6 for accommodating an arm is formed between the strap 51 and the main body 10. The first end of the strap 51 is connected to the main body 10. The main body 10 has an opening slot 11. The length adjustment structure 52 is retractably arranged in the opening slot 11 and connected to the second end of the strap 51. The length adjustment structure 52 can adjust the size of the accommodation space 6 when it is retracted. Specifically, when the staff needs to wear the detection device on the arm, the length adjustment structure 52 is first extended a certain distance to increase the size of the accommodation space 6, so that the arm can more easily fit into the accommodation space 6, and then the length adjustment structure 52 is retracted a certain distance, so that the strap 51 can stably press against the arm to prevent the detection device from loosening from the arm.

[0043] like Figures 1 to 5 As shown, the detection device also includes a positioning screw 53, and the length adjustment structure 52 includes a connecting block 521. The connecting block 521 is provided with a slide groove extending along the telescopic direction of the length adjustment structure 52, and the slide groove includes a shallow groove section and a deep groove section which are connected and arranged, and the deep groove section is located on the outside of the shallow groove section. The positioning screw 53 is movably inserted into the main body 10, and the positioning screw 53 has an operating end located outside the main body 10 and a mating end located in the open groove 11, and the mating end can be mated with the shallow groove section or the deep groove section. When the mating end is mated with the shallow groove section, the connecting block 521 can move, and when the mating end is mated with the deep groove section, the connecting block 521 keeps its position unchanged.

[0044] Specifically, the shallow groove section extends a certain distance along the telescopic direction of the lengthening structure 52. When the lengthening structure 52 needs to be extended a certain distance, the mating end is first moved upward a certain distance, so that the mating end is withdrawn from the deep groove section, so that the mating end can cooperate with the shallow groove section, thereby pulling the connecting block 521; when wearing is completed, push back the connecting block 521 so that the mating end corresponds to the deep groove section, and then move the mating end downward a certain distance so that the mating end is inserted into the deep groove section, and the deep groove section and the mating end are limited and cooperated, so that the position of the connecting block 521 remains unchanged.

[0045] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0046] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0047] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A detection device connected to a detection terminal of an electrical device to detect the three-phase sequence of the electrical device, characterized in that: The detection device comprises: Body part(10); An electrical connection terminal (20) disposed on the main body (10) and used for connecting to the detection terminal; a resisting assembly (30) movably arranged on the main body (10), the resisting assembly (30) having a resisting position and a separation position; when the resisting assembly (30) is located at the resisting position, the resisting assembly (30) can resist and cooperate with the power terminal (20) so that the power terminal (20) and the detection terminal maintain a conductive state; when the resisting assembly (30) is located at the separation position, the resisting assembly (30) is separated from the power terminal (20) so that the power terminal (20) can be separated from the detection terminal; A positioning assembly (40) is movably arranged on the main body (10) or on the resisting assembly (30), and the positioning assembly (40) has a positioning position and an unlocking position. When the positioning assembly (40) is located at the positioning position, the positioning assembly (40) and the resisting assembly (30) are positioned and matched so that the resisting assembly (30) maintains an unchanged position; when the positioning assembly (40) is located at the unlocking position, the positioning assembly (40) and the resisting assembly (30) are disengaged from the positioning and matched so that the resisting assembly (30) can move.

2. The detection device according to claim 1, characterized in that: The abutting assembly (30) comprises a supporting structure (31) movable in a vertical direction and an abutting structure (32) arranged at the top end of the supporting structure (31); the supporting structure (31) is connected to the main body (10); and the positioning assembly (40) can be in positioning cooperation with or out of positioning cooperation with the supporting structure (31).

3. The detection device according to claim 2, characterized in that: The abutting structure (32) comprises a mounting block (321) and an abutting block (322) movably arranged on the mounting block (321); the mounting block (321) is connected to the supporting structure (31); the detection terminal comprises a first detection terminal; the power terminal (20) comprises a first power terminal (21) corresponding to the first detection terminal; when the abutting assembly (30) is located at the abutting position, the abutting block (322) has a first abutting position and a first disengaged position; when the abutting block (322) is located at the first abutting position, the abutting block (322) abuts against the first power terminal (21) so that the first power terminal (21) and the first detection terminal maintain a conductive state; when the abutting block (322) is located at the first disengaged position, the abutting block (322) is separated from the first power terminal (21).

4. The detection device according to claim 3, characterized in that: The abutting structure (32) further comprises an abutting arm (323), the abutting arm (323) being rotatably arranged on the mounting block (321), the abutting arm (323) being located on the outer side of the abutting block (322), the detection terminal further comprising a second detection terminal spaced apart from the first detection terminal, the power terminal (20) further comprising a second power terminal (22) corresponding to the second detection terminal, when the abutting assembly (30) is located at the abutting position, the abutting arm (323) has a second abutting position and a second disengaged position, when the abutting arm (323) is located at the second abutting position, the abutting arm (323) abuts against the second power terminal (22) so that the second power terminal (22) and the second detection terminal maintain a conductive state, and when the abutting arm (323) is located at the second disengaged position, the abutting arm (323) is separated from the second power terminal (22).

5. The detection device according to claim 4, characterized in that: The abutting structure (32) also includes a movably arranged retaining member (324), wherein the retaining member (324) can abut against the lower surface of the abutting arm (323) so that the abutting arm (323) is maintained in the second abutting position, and the retaining member (324) moves and separates from the abutting arm (323) so that the abutting arm (323) switches from the second abutting position to the second disengaged position under the action of gravity.

6. The detection device according to any one of claims 2 to 5, characterized in that: The support structure (31) comprises an outer sleeve (311) and a sliding rod (312) which are nested together, one of the outer sleeve (311) and the sliding rod (312) being connected to the abutting structure (32), and the other of the outer sleeve (311) and the sliding rod (312) being connected to the main body (10).

7. The detection device according to claim 6, characterized in that: The positioning assembly (40) includes an operating rod (41) and a latch (42), wherein the operating rod (41) is connected to the outer sleeve (311), and the slide bar (312) is provided with a plurality of insertion holes arranged at intervals along the axial direction of the slide bar (312), and the latch (42) is movably arranged on the operating rod (41). When the positioning assembly (40) is located at the positioning position, the latch (42) is plugged into and matched with one of the insertion holes so that the outer sleeve (311) and the slide bar (312) maintain their positions unchanged. When the positioning assembly (40) is located at the unlocking position, the latch (42) is separated from the insertion hole so that the outer sleeve (311) and the slide bar (312) can slide relative to each other.

8. The detection device according to claim 7, characterized in that: The positioning assembly (40) further comprises a rotating cylinder (43) sleeved on the operating rod (41), wherein the rotating cylinder (43) is bearing-connected to the latch pin (42), and the rotating cylinder (43) is threadedly connected to the operating rod (41), and when the rotating cylinder (43) rotates, the latch pin (42) is driven to move.

9. The detection device according to any one of claims 1 to 5, characterized in that: The detection device also includes a strap (51) and a length adjustment structure (52), wherein an accommodation space (6) for accommodating an arm is formed between the strap (51) and the main body (10), the first end of the strap (51) is connected to the main body (10), the main body (10) has an opening groove (11), the length adjustment structure (52) is telescopically arranged in the opening groove (11) and connected to the second end of the strap (51), and the length adjustment structure (52) can adjust the size of the accommodation space (6) when it is telescopically extended.

10. The detection device according to claim 9, characterized in that: The detection device also includes a positioning screw (53), the length adjustment structure (52) includes a connecting block (521), and the connecting block (521) is provided with a slide groove extending along the telescopic direction of the length adjustment structure (52), and the slide groove includes a shallow groove section and a deep groove section which are connected and arranged, and the deep groove section is located on the outside of the shallow groove section. The positioning screw (53) is movably inserted into the main body (10), and the positioning screw (53) has an operating end located outside the main body (10) and a matching end located in the open groove (11), and the matching end can match with the shallow groove section or the deep groove section. When the matching end matches with the shallow groove section, the connecting block (521) can move, and when the matching end matches with the deep groove section, the connecting block (521) keeps its position unchanged.

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