A density relay calibration device convenient for wiring

Abstract

The present invention discloses a density relay calibration device that is convenient for wiring, comprising a main body component, including a calibrator, a relay matched with the calibrator, wiring arranged on the calibrator and a plug wire arranged on the relay; and a wiring component, including an interface arranged on a wiring terminal, a plug arranged on the plug wire terminal and matched with the interface, a protection cabinet and a positioning piece arranged on the interface and the plug. The interface and the plug are placed in the protection cabinet. The present invention can align and position. When the plug is inserted into the connector, the plug will be clamped. When it is pulled out, the clamping will be automatically released, making the operation easier, saving manpower and time, and greatly reducing the situation where the test equipment is damaged due to a short circuit, thereby improving the safety of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of relay testers, and in particular to a density relay tester which is convenient for wiring. Background Art

[0002] At present, when calibrating the density relays of circuit breakers and SF6 current transformers, the connector of the SF6 density relay calibrator used is composed of six clips. When calibrating the SF6 density relay, it is necessary to carefully find the number corresponding to each contact of the density relay and connect it with the clip of the SF6 density relay calibrator. However, when the test clips are clamped on the needle of the aviation plug, the test clips may touch each other, causing a short circuit and causing damage to the test equipment. In addition, the installation space of the density relays of some circuit breakers and SF6 current transformers is relatively narrow, making operation difficult. At the same time, the position is relatively high. When the test clips are connected to the needle of the aviation plug, it takes a long time and the work efficiency is low. This makes it very dangerous to move the body in the air to find the connector number, which may cause personal accidents. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the problem that it is inconvenient to connect the relay to the existing relay tester, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a density relay testing device which is easy to wire.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a density relay calibration device that is easy to wire includes a main body component, including a calibrator, a relay that cooperates with the calibrator, a wiring connection set on the calibrator, and a plug wire set on the relay; and a wiring component, including an interface set on the wiring terminal, a plug set on the plug wire terminal and cooperating with the interface, a protection cabinet, and a positioning piece set on the interface and the plug, and the interface and the plug are placed in the protection cabinet.

[0007] As a preferred solution of the density relay calibration device for easy wiring of the present invention, openings are provided on both sides of the protection cabinet, the wiring and plug wires enter from the openings, and dust rings are provided on the outside of the openings.

[0008] As a preferred solution of the density relay calibration device that is easy to wire as described in the present invention, wherein: a first stabilizing ring and a second stabilizing ring are arranged at the lower inner side of the opening, the first stabilizing ring and the second stabilizing ring are movably connected, a sliding rod is arranged below the first stabilizing ring and the second stabilizing ring, and a pressure sensing block is slidably connected to the sliding rod.

[0009] As a preferred solution of the density relay calibration device that is easy to wire in the present invention, a through slot is provided at the bottom of the protection cabinet, the pressure sensing block extends from the through slot, push rods are provided at both ends of the top of the pressure sensing block, and the top ends of the push rods at both ends are respectively fitted with the first stabilizing ring and the second stabilizing ring.

[0010] As a preferred solution of the density relay calibration device that is easy to wire according to the present invention, magnetic parts are arranged at the top of the first stabilizing ring and the top of the second stabilizing ring.

[0011] As a preferred solution of the density relay calibration device that is easy to connect as described in the present invention, the positioning member includes a positioning ring arranged on the outside of the interface, a limiting ring arranged on the outside of the plug and cooperating with the positioning ring, and a clamping member arranged on the interface, the positioning ring and the interface are rotatably connected, a limiting block is arranged on the outside of the limiting ring, a positioning block cooperating with the limiting block is arranged on the inner wall of the positioning ring, and the limiting block and the positioning block have the same curvature.

[0012] As a preferred solution of the density relay calibration device that is easy to connect to the interface as described in the present invention, the clamping component includes a tray arranged at the bottom of the interface, a card plate arranged on one side of the interface, a card rod arranged below the card plate and cooperating with the card plate, and a lifting plate arranged on the other side of the interface, an opening is provided on the interface, both ends of the tray are placed in the opening and are slidably connected to the interface, the lifting plate is arranged directly below the tray, and a slot cooperating with the tray is provided in the middle of the lifting plate.

[0013] As a preferred solution of the density relay calibration device that is easy to wire as described in the present invention, wherein: the card plate is movably connected to the interface, the card rod is movably connected to the interface and has an arc at the bottom, the top of the card rod is located on the side of the card plate away from the interface, and an elastic piece is provided at the bottom of the card rod, and the other end of the elastic piece is fixedly connected to the bottom of the interface.

[0014] As a preferred solution of the density relay calibration device that is easy to wire as described in the present invention, a rotating plate is arranged between the starting plate and the tray, a rotating groove is opened on the outer side of the interface, the rotating plate extends from the rotating groove, and the rotating plate is fixedly connected to the positioning ring at one end away from the interface.

[0015] As a preferred solution of the density relay calibration device that is easy to wire as described in the present invention, wherein: a steel wire is arranged at the top of the lifting plate, the other end of the steel wire is fixedly connected to a starting block, a pulley is arranged above the lifting plate, the pulley is fixed at the top of the opening, the steel wire is placed in the pulley, the starting block is placed on the rotating plate, and the weight of the starting block is greater than the weight of the lifting plate.

[0016] The beneficial effects of the present invention are as follows: the present invention can align and position, the plug will be clamped when it is inserted into the connector, and the clamping will be automatically released when it is pulled out, making the operation easier, saving manpower and time, and also greatly reducing the situation where the test equipment is damaged due to short circuits, thereby improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 The present invention is a schematic diagram of the overall structure of a density relay calibration device that is easy to wire.

[0019] Figure 2 A partial structural schematic diagram of a density relay calibration device for easy wiring of the present invention.

[0020] Figure 3 A partial structural schematic diagram of a density relay calibration device for easy wiring of the present invention.

[0021] Figure 4 for Figure 3 The structural schematic diagram of the density relay calibration device A of the present invention which is convenient for wiring.

[0022] Figure 5 A structural cross-sectional view of the clamping component of the density relay calibration device for easy wiring of the present invention. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] Example 1

[0028] Reference Figure 1-5 A density relay calibration device that is easy to wire includes a main body component 100, including a calibrator 101, a relay 102 that cooperates with the calibrator 101, a wiring 103 arranged on the calibrator 101, and a plug 104 arranged on the relay 102; and a wiring component 200, including an interface 201 arranged on the end of the wiring 103, a plug 202 arranged on the end of the plug 104 and cooperating with the interface 201, a protection cabinet 203, and a positioning member 300 arranged on the interface 201 and the plug 202, and the interface 201 and the plug 202 are placed in the protection cabinet 203.

[0029] Specifically, a density relay calibration device convenient for wiring includes a main body component 100, including a calibrator 101, a relay 102 matched with the calibrator 101, a wiring 103 arranged on the calibrator 101, and a plug 104 arranged on the relay 102; and a wiring component 200, including an interface 201 arranged on the end of the wiring 103, a plug 202 arranged on the end of the plug 104 and matched with the interface 201, a protection cabinet 203, and a positioning member 300 arranged on the interface 201 and the plug 202, wherein the protection cabinet 203 is used to connect the wiring 103 to the wiring 103. When the interface 201 and the plug 202 are connected and placed on the ground, some external shaking can be avoided to cause them to fall off. Raising them can also prevent the water on the ground from affecting them to a certain extent. The interface 201 and the plug 202 are placed in the protection cabinet 203. After they are placed steadily, the protection cabinet 203 will have a stable reinforcement effect on them. The present invention can align and position, and the plug will be clamped when it is inserted into the connector. When it is pulled out, the clamping will be automatically released, making the operation easier, saving manpower and time, and greatly reducing the situation where the test equipment is damaged due to short circuit, thereby improving the safety of the equipment.

[0030] Operation process: Plug the interface 201 into the plug 202, place it together with the protection cabinet 203 on the ground, and connect the circuits of the calibrator 101 and the relay 102.

[0031] Example 2

[0032] Reference Figure 1-5 , this embodiment is different from the first embodiment in that: openings 204 are provided on both sides of the protection cabinet 203, and the wiring 103 and the plug wire 104 enter from the openings 204, and dust rings 205 are provided on the outside of the openings 204; a first stabilizing ring 206 and a second stabilizing ring 207 are provided at the lower inner side of the opening 204, and the first stabilizing ring 206 and the second stabilizing ring 207 are movably connected, and a sliding rod 208 is provided below the first stabilizing ring 206 and the second stabilizing ring 207, and a pressure sensing block 209 is slidably connected to the sliding rod 208; a through groove is provided at the bottom of the protection cabinet 203, and the pressure sensing block 209 extends out of the through groove, and push rods 210 are provided at both ends of the top of the pressure sensing block 209, and the push rods 210 at both ends 0, and the top ends thereof are respectively fitted with the first stabilizing ring 206 and the second stabilizing ring 207; the top ends of the first stabilizing ring 206 and the second stabilizing ring 207 are provided with magnetic members; the positioning member 300 comprises a positioning ring 301 arranged on the outside of the interface 201, a limiting ring 302 arranged on the outside of the plug 202 and cooperating with the positioning ring 301, and a clamping member 400 arranged on the interface 201, the positioning ring 301 is rotatably connected to the interface 201, a limiting block 303 is arranged on the outside of the limiting ring 302, a positioning block 304 cooperating with the limiting block 303 is arranged on the inner wall of the positioning ring 301, the limiting block 303 and the positioning block 304 have the same curvature, and the rest of the structure is the same as that of Example 1.

[0033] Specifically, openings 204 are provided on both sides of the protection cabinet 203, and the wiring 103 and the plug wire 104 enter through the openings 204. Dustproof rings 205 are provided on the outside of the openings 204. The diameter of the openings 204 is slightly larger than the diameter of the wiring 103 and the plug wire 104. The dustproof rings 205 are used to prevent dust from entering the protection cabinet 203. In this embodiment, the dustproof rings 205 are rubber rings.

[0034] Furthermore, a first stabilizing ring 206 and a second stabilizing ring 207 are provided at the lower inner side of the opening 204, and the first stabilizing ring 206 and the second stabilizing ring 207 are movably connected. The first stabilizing ring 206 and the second stabilizing ring 207 are symmetrically arranged, and when closed, they are circular rings with a diameter consistent with the diameter of the wiring 103 and the plug wire 104. The two overlap at the bottom and have a fixed point in the protection cabinet 203, and the first stabilizing ring 206 and the second stabilizing ring 207 can rotate around this fixed point, and a sliding rod 208 is provided below the first stabilizing ring 206 and the second stabilizing ring 207, and a pressure-sensitive block 209 is slidably connected to the sliding rod 208, and the pressure-sensitive block 209 can slide up and down on the sliding rod 208.

[0035] Furthermore, a through slot is provided at the bottom of the protection cabinet 203, and the pressure-sensing block 209 extends out from the through slot. Push rods 210 are provided at both ends of the top of the pressure-sensing block 209, and the top ends of the push rods 210 at both ends are respectively fitted with the first stabilizing ring 206 and the second stabilizing ring 207; magnetic parts are provided at the top ends of the first stabilizing ring 206 and the second stabilizing ring 207. In this embodiment, the magnetic parts are magnets, and the size of the through slot is consistent with that of the pressure-sensing block 209. The pressure-sensing block 209 just extends out of the through slot, and when it is placed on the ground and squeezed, the pressure-sensing block 209 will move upward along the slide bar 208, and the push rod 210 just fits with the first stabilizing ring 206 and the second stabilizing ring 207, that is, when the pressure-sensing block 209 moves upward, the push rod 210 will also move upward, thereby pushing the top ends of the first stabilizing ring 206 and the second stabilizing ring 207 closer to each other. Because magnetic parts are provided at the top ends of the first stabilizing ring 206 and the second stabilizing ring 207, they will attract each other and hold the wiring 103 and the plug wire 104 tightly.

[0036] Furthermore, the positioning member 300 includes a positioning ring 301 arranged on the outside of the interface 201, a limiting ring 302 arranged on the outside of the plug 202 and cooperating with the positioning ring 301, and a clamping component 400 arranged on the interface 201, the positioning ring 301 and the interface 201 are rotatably connected, the diameter of the positioning ring 301 is slightly larger than the diameter of the limiting ring 302, a limiting block 303 is arranged on the outside of the limiting ring 302, and a positioning block 304 cooperating with the limiting block 303 is arranged on the inner wall of the positioning ring 301, and the limiting block 303 and the positioning block 304 have the same curvature, the starting end of the limit block 303 is located at the terminal end of the positioning block 304, a protrusion is arranged on the terminal end of the positioning block 304, and a groove engaged with the protrusion is arranged at the terminal end of the limit block 303. After the two are aligned and fitted, since their curvatures are the same and the starting end of the limit block 303 is located at the terminal end of the positioning block 304, the positioning ring 301 will generate a rotation in the sliding direction of the limit block 303 and the positioning block 304 during insertion, and then the protrusion and the groove are clamped.

[0037] Operation process: after aligning and fitting the interface 201 and the plug 202, since their curvatures are the same, the starting end of the limit block 303 is located at the end end of the positioning block 304, so when inserted, the positioning ring 301 will rotate in the sliding direction of the limit block 303 and the positioning block 304, and then the protrusion and the groove are clamped, the clamping component 400 is started, and then it is placed on the ground together with the protection cabinet 203. At this time, the pressure-sensitive block 209 is squeezed and moves upward along the slide bar 208, and the push rod 210 just fits with the first stabilizing ring 206 and the second stabilizing ring 207. That is, when the pressure-sensitive block 209 moves upward, the push rod 210 will also move upward, thereby pushing the top ends of the first stabilizing ring 206 and the second stabilizing ring 207 to be close to each other. Because magnetic parts are arranged on the top ends of the first stabilizing ring 206 and the second stabilizing ring 207, they will attract each other and hold the wiring 103 and the plug wire 104 tightly, and the calibration instrument 101 is connected to the relay 102 circuit.

[0038] Example 3

[0039] Reference Figure 1-5 , this embodiment is different from the above embodiments in that: the clamping component 400 includes a tray 401 arranged at the bottom of the interface 201, a card board 402 arranged at one side of the interface 201, a card rod 403 arranged below the card board 402 and cooperating with the card board 402, and a lifting plate 404 arranged at the other side of the interface 201, an opening is opened on the interface 201, both ends of the tray 401 are placed in the opening and are slidably connected to the interface 201, the lifting plate 404 is arranged directly below the tray 401, and a notch cooperating with the tray 401 is opened in the middle of the lifting plate 404; the card board 402 is movably connected to the interface 201, the card rod 403 is movably connected to the interface 201 and has an arc at the bottom, and the top of the card rod 403 is located on the side of the card board 402 away from the interface 201 On the side, an elastic member 405 is provided at the bottom of the card rod 403, and the other end of the elastic member 405 is fixedly connected to the bottom of the interface 201; a rotating plate 406 is provided between the lifting plate 404 and the tray 401, and a rotating groove is opened on the outer side of the interface 201, and the rotating plate 406 extends out of the rotating groove, and the rotating plate 406 is fixedly connected to the positioning ring 301 at one end away from the interface 201; a steel wire 407 is provided at the top of the lifting plate 404, and the other end of the steel wire 407 is fixedly connected to a starting block 408, and a pulley 409 is provided above the lifting plate 404, the pulley 409 is fixed at the top of the opening, the steel wire 407 is placed in the pulley 409, and the starting block 408 is placed on the rotating plate 406, and the weight of the starting block 408 is greater than the weight of the lifting plate 404, and the rest of the structure is the same as that of Example 2.

[0040] Specifically, the clamping component 400 includes a tray 401 arranged at the bottom of the interface 201, a card board 402 arranged at one side of the interface 201, a card rod 403 arranged below the card board 402 and matched with the card board 402, and a lifting plate 404 arranged at the other side of the interface 201. The interface 201 is provided with an opening, and both ends of the tray 401 are placed in the opening and are slidably connected with the interface 201. The lifting plate 404 is arranged directly below the tray 401, and a notch matched with the tray 401 is provided in the middle of the lifting plate 404. The size of the tray 401 is consistent with that of the interface and there are small handles on both sides. The width of the handles is consistent with that of the opening and can be just placed in the opening for sliding up and down. The lifting plate 404 is used to lift the tray after the plug 202 is unplugged. The disk 401 is driven upward to release the clamp on the plug 202 and push the debris in the interface 201 out of the interface 201. A notch is provided in the middle of the lifting plate 404 to cooperate with the tray 401. The cooperation here means that the notch can be engaged with the small handle so that the movement of the tray 401 is driven by the movement of the lifting plate 404. A spring is provided between the positioning ring 301 and the outside of the interface 201. The spring stretches naturally when the interface 201 is not in use. After the plug 202 is inserted, the positioning ring 301 rotates and moves, so the spring stretches. The elastic force makes the positioning ring 301 and the limit ring 302 fit more tightly, and after being pulled out, the positioning ring 301 can return to its original position more quickly under the tension of the spring.

[0041] Furthermore, the card plate 402 is movably connected to the interface 201, the card rod 403 is movably connected to the interface 201 and has an arc at the bottom, the top of the card rod 403 is located on the side of the card plate 402 away from the interface 201, and an elastic member 405 is provided at the bottom of the card rod 403, and the other end of the elastic member 405 is fixedly connected to the bottom of the interface 201. In this embodiment, the elastic member 405 is a spring, and a fixed rod is provided between the top of the card plate 402 and the interface 201. The card plate 402 can move horizontally along the fixed rod, and the width of the top of the card plate 402 gradually increases toward the bottom. Reduced to zero, the card rod 403 is movably connected to the interface 201, and its bottom and the interface 201 have an active point. The card rod 403 can rotate with the active point as a fixed point. When the plug 202 is not connected, the elastic member 405 stretches naturally. After the plug 202 is connected, the elastic member 405 is compressed, and the tray 401 presses down the elastic member 405 to compress the card rod 403 to make it rotate. Because of the curvature of its bottom, the force of its rotation makes the top of the card rod 403 move toward the card plate 402, causing the card plate 402 to be horizontally displaced and pressed against the plug 202.

[0042] Furthermore, a rotating plate 406 is provided between the lifting plate 404 and the tray 401, and a rotating groove is provided on the outer side of the interface 201, and the rotating plate 406 extends out from the rotating groove. The end of the rotating plate 406 away from the interface 201 is fixedly connected to the positioning ring 301, and the rotating plate 406 is used to control whether the lifting plate 404 is raised or lowered. The rotating plate 406 will rotate in the rotating groove only when the positioning ring 301 rotates due to the insertion of the plug 202.

[0043] Furthermore, a steel wire 407 is provided at the top of the lifting plate 404, and a starting block 408 is fixedly connected to the other end of the steel wire 407. A pulley 409 is provided above the lifting plate 404, and the pulley 409 is fixed at the top of the opening. The steel wire 407 is placed in the pulley 409, and the starting block 408 is placed on the rotating plate 406. The weight of the starting block 408 is greater than the weight of the lifting plate 404. After the rotating plate 406 rotates, the starting block 408 loses the bottom support and will fall. At this time, the lifting plate 404 also loses the obstruction of the rotating plate 406, and the tray 401 is driven upward by the pulling of the steel wire 407 to complete the unlocking of the plug 202.

[0044] Operation process: After the interface 201 and the plug 202 are aligned and fitted, the plug 202 pushes the tray 401 to the bottom of the interface 201, and the elastic member 405 is compressed and the card rod 403 is rotated at the same time. The top of the card rod 403 moves toward the card plate 402, causing the card plate 402 to move horizontally and press against the plug 202. When the plug 202 is pulled out, the rotating plate 406 rotates, and the starting block 408 loses the bottom support and falls. At this time, the lifting plate 404 also loses the obstruction of the rotating plate 406, and the tray 401 is driven up by the pulling of the steel wire 407 to complete the unlocking of the plug 202.

[0045] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0046] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0047] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A density relay calibration device that is easy to wire, characterized in that: include, A main body component (100) comprises a tester (101), a relay (102) matched with the tester (101), a wiring (103) arranged on the tester (101), and a plug wire (104) arranged on the relay (102); and, A wiring assembly (200) comprises an interface (201) arranged on an end of a wiring (103), a plug (202) arranged on an end of a plug wire (104) and cooperating with the interface (201), a protection cabinet (203), and a positioning member (300) arranged on the interface (201) and the plug (202), wherein the interface (201) and the plug (202) are placed in the protection cabinet (203); Openings (204) are provided on both sides of the protection cabinet (203), and the wiring (103) and the plug wire (104) enter through the openings (204). A dustproof ring (205) is provided outside the opening (204); A first stabilizing ring (206) and a second stabilizing ring (207) are arranged at the lower inner side of the opening (204); the first stabilizing ring (206) and the second stabilizing ring (207) are movably connected; a sliding rod (208) is arranged below the first stabilizing ring (206) and the second stabilizing ring (207); a pressure sensing block (209) is slidably connected to the sliding rod (208); A through slot is provided at the bottom of the protection cabinet (203), the pressure sensing block (209) extends from the through slot, and push rods (210) are provided at both ends of the top of the pressure sensing block (209), and the top ends of the push rods (210) at both ends are respectively in contact with the first stabilizing ring (206) and the second stabilizing ring (207); Magnetic parts are arranged at the top ends of the first stabilizing ring (206) and the second stabilizing ring (207); The positioning member (300) comprises a positioning ring (301) arranged on the outside of the interface (201), a limiting ring (302) arranged on the outside of the plug (202) and cooperating with the positioning ring (301), and a clamping component (400) arranged on the interface (201); the positioning ring (301) and the interface (201) are rotatably connected; a limiting block (303) is arranged on the outside of the limiting ring (302); a positioning block (304) cooperating with the limiting block (303) is arranged on the inner wall of the positioning ring (301); and the limiting block (303) and the positioning block (304) have the same curvature.

2. The density relay calibration device for easy wiring as claimed in claim 1, characterized in that: The clamping component (400) comprises a tray (401) arranged at the bottom of the interface (201), a card plate (402) arranged at one side of the interface (201), a card rod (403) arranged below the card plate (402) and cooperating with the card plate (402), and a lifting plate (404) arranged at the other side of the interface (201), the interface (201) is provided with an opening, both ends of the tray (401) are placed in the opening and are slidably connected to the interface (201), the lifting plate (404) is arranged directly below the tray (401), and a notch cooperating with the tray (401) is provided in the middle of the lifting plate (404).

3. The density relay calibration device for easy wiring as claimed in claim 2, characterized in that: The card plate (402) is movably connected to the interface (201), the card rod (403) is movably connected to the interface (201) and has an arc at the bottom, the top of the card rod (403) is located on the side of the card plate (402) away from the interface (201), and an elastic member (405) is provided at the bottom of the card rod (403), and the other end of the elastic member (405) is fixedly connected to the bottom of the interface (201).

4. The density relay calibration device convenient for wiring as claimed in claim 3, characterized in that: A rotating plate (406) is provided between the lifting plate (404) and the tray (401), a rotating groove is provided on the outside of the interface (201), the rotating plate (406) extends from the rotating groove, and one end of the rotating plate (406) away from the interface (201) is fixedly connected to the positioning ring (301).

5. The density relay calibration device convenient for wiring as claimed in claim 4, characterized in that: A steel wire (407) is disposed at the top of the lifting plate (404), and a starting block (408) is fixedly connected to the other end of the steel wire (407). A pulley (409) is disposed above the lifting plate (404), and the pulley (409) is fixed at the top of the opening. The steel wire (407) is placed inside the pulley (409), and the starting block (408) is placed on the rotating plate (406). The weight of the starting block (408) is greater than the weight of the lifting plate (404).

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