Electric power meter

Abstract

The invention discloses an electric power meter which comprises a meter body and further comprises a mounting frame arranged behind the meter body, mounting lugs are arranged on the two sides of the meter body, and the meter body is connected with the mounting frame through a quick release mechanism. A positioning mechanism is also mounted between the instrument body and the mounting rack; through the quick release mechanism arranged between the mounting frame and the instrument body, the limiting pin is limited in the limiting part under the elastic acting force of the mounting spring, and the instrument body and the quick release mechanism are tightly clamped due to the acting force of the limiting spring, so that the instrument body is prevented from being separated from the mounting frame; the quick dismounting operation is realized through the quick dismounting mechanism; the instrument body is pre-mounted on the mounting rack through the positioning mechanism and then fixed through the quick release mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power meters and relates to an electric power meter. Background Art

[0002] Power meters are power measurement and control equipment that provide solutions for power parameter measurement, power quality monitoring and analysis, and electrical equipment control. As an advanced intelligent and digital front-end acquisition component of the power grid, power meters have been widely used in various control systems, SCADA systems and energy management systems, substation automation, community power monitoring, industrial automation, smart buildings, smart distribution cabinets, switch cabinets and other equipment. They are easy to install, simple to connect, and require little engineering effort.

[0003] Traditional power meters are mostly fixed by bolts, which makes installation and subsequent maintenance troublesome, time-consuming and labor-intensive.

[0004] Application No. 201820091231.1 discloses an external device for an electric meter with a magnetic suction function, including a mounting plate, a clamping device is provided on the front of the mounting plate, a magnetic suction element for fixing is fixed on the back of the mounting plate, and the clamping device is used to connect the electric meter; the clamping device is a clamping block that cooperates with the buckle of the electric meter, the clamping block is fixed on the front of the mounting plate and folded to the upper and lower sides of the mounting plate to form a clamping groove; the clamping device includes a pressure block movably arranged on the mounting plate, and two opposing pressure blocks are provided on the mounting plate, and a clamping space for clamping the electric meter is formed between the two pressure blocks. Although this document solves the problem of the existing troublesome disassembly and assembly, since the structure only fixes the electric meter by the magnetic suction unit, the magnetic suction element has poor stability over a long period of time, and the electric meter is very easy to fall off.

[0005] Therefore, while ensuring that the power meter can be quickly disassembled and assembled, the stability of the power meter after installation should also be considered. To solve the above problems, the present invention proposes a power meter. Summary of the invention

[0006] In order to solve the problems existing in the background technology, the present invention proposes an electric power meter.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: an electric power meter, including a meter body, and also including a mounting frame arranged behind the meter body, mounting ears are arranged on both sides of the meter body, and the meter body and the mounting frame are connected by a quick release mechanism; a positioning mechanism is also installed between the meter body and the mounting frame.

[0008] Furthermore, the mounting frame is a cross-shaped structure, and a waist-shaped hole is provided on the mounting frame.

[0009] Furthermore, there are two quick-release mechanisms, which correspond to two mounting ears respectively; the quick-release mechanism includes a mounting tube, a mounting pin, and a mounting spring; a limit pin is radially inserted at the front end of the mounting pin, and a limit track is arranged in the mounting tube; the limit pin is inserted into the mounting tube along the limit track through the mounting pin; the mounting spring is located in the mounting tube and abuts against the inner wall of the mounting tube and the mounting pin.

[0010] Furthermore, the inner hole of the mounting tube is a stepped hole, and the fastening bolt passes through the small diameter section of the stepped hole to fix the mounting tube on the mounting frame; the mounting pin and the mounting spring are both located in the large diameter section of the stepped hole.

[0011] Furthermore, the limiting track is arranged on the inner wall of the large diameter section of the stepped hole; the limiting track is J-shaped and includes a guide part, a rotating part, and a limiting part which are connected in sequence; the guiding part is connected to the end wall of the large diameter section of the mounting tube.

[0012] Furthermore, the mounting pin is in the shape of a stepped shaft, and includes a first plug-in portion, a second plug-in portion and a knob portion; the first plug-in portion cooperates with the mounting tube, the second plug-in portion cooperates with the fixing ear, and the knob portion axially limits the fixing ear.

[0013] Furthermore, a friction layer is provided on the outer edge surface of the knob portion.

[0014] Furthermore, a limit spring is installed between the knob portion and the fixing ear.

[0015] Furthermore, the positioning mechanism includes a positioning pin installed on the back of the instrument body and a positioning cylinder installed on the mounting frame.

[0016] Furthermore, a mounting groove is provided on the back of the instrument body, and the positioning pin is rotatably installed in the mounting groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects: in the present invention, a quick release mechanism is arranged between the mounting frame and the instrument body, and under the elastic force of the mounting spring, the limit pin is restricted in the limit portion, and due to the force of the limit spring, the instrument body and the quick release mechanism are tightly clamped, thereby preventing the instrument body from being separated from the mounting frame, and realizing quick loading and unloading operations through the quick release mechanism; the instrument body is first pre-installed on the mounting frame through the positioning mechanism, and then fixed by the quick release mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the power meter in the present invention;

[0019] Figure 2 It is a schematic diagram of the installation of the instrument body and the positioning mechanism in the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the power meter in another direction of the present invention;

[0021] Figure 4 yes Figure 2 Enlarged view of part A in the middle;

[0022] Figure 5 yes Figure 2 Enlarged view of middle part B;

[0023] Figure 6 yes Figure 3 Enlarged view of middle C;

[0024] Figure 7 It is a structural schematic diagram of the quick release mechanism in the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the installation tube in the present invention;

[0026] Fig. 9 is a cross-sectional view of the installation tube in the present invention;

[0027] Fig.10 It is a structural schematic diagram of the mounting pin in the present invention.

[0028] In the figure: 1. mounting bracket; 1a. waist-shaped hole; 2. instrument body; 2a. mounting ear; 3. quick release mechanism; 31. mounting tube; 32. mounting pin; 32a. first plug-in part; 32b. second plug-in part; 32c. knob part; 33. mounting spring; 34. limit pin; 35. limit track; 35a. guide part; 35b. rotating part; 35c. rotating part; 36. limit spring; 4. positioning mechanism; 41. positioning pin; 42. positioning tube; 5. fastening bolt; 6. mounting groove. 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, not all of the embodiments. 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] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-Figure 10 As shown, the technical solution adopted by the present invention is as follows: an electric power meter includes a meter body 2, a mounting frame 1, a quick-release mechanism 3 and a positioning mechanism 4; the meter body 2 is integrally formed with mounting ears 2a on both sides; a waist-shaped hole 1a is opened on the mounting frame 1, and the mounting frame 1 is matched with bolts through the waist-shaped hole 1a to be fixed in a box such as an electrical box, and the mounting frame 1 provides an installation position for the meter body 2; the meter body 2 is first pre-installed on the mounting frame 1 through the positioning mechanism 4, and then fixed through the quick-release mechanism 3.

[0033] like Figure 3 As shown, in this embodiment, the mounting frame 1 is a cross-shaped structure, and four groups of waist-shaped holes 1a are provided, and are respectively arranged along the four length directions of the mounting frame 1; the set waist-shaped holes 1a can adapt to the installation holes in different electrical boxes, thereby improving the adaptability of the power meter.

[0034] There are two sets of quick-release mechanisms 3 and positioning mechanisms 4. The quick-release mechanisms 3 correspond to the two mounting ears 2a, and the positioning mechanisms 4 are located at the upper and lower ends of the instrument body 2. The two sets of quick-release mechanisms 3 correspond to the left and right frames of the mounting frame 1, and the positioning mechanisms 4 correspond to the upper and lower frames of the mounting frame 1. When the two quick-release mechanisms 3 fix the instrument body 2, the two positioning mechanisms 4 can also provide a certain support for the instrument body 2 to prevent the instrument body 2 from being separated from the mounting frame 1 after a long period of work.

[0035] like Figure 7-Figure 10 As shown, in this embodiment, the quick release mechanism 3 includes a mounting tube 31, a mounting pin 32 and a mounting spring 33; wherein the mounting tube 31 is fixed on the mounting frame 1; a plug-in hole is radially provided at the front end of the mounting pin 32, a limit pin 34 is inserted into the plug-in hole, and the limit pin 34 and the plug-in hole have an interference fit, and the length of the limit pin 34 is greater than the outer diameter of the head of the mounting pin 32; a limit track 35 is provided in the mounting tube 31, and the limit pin 34 is inserted into the mounting tube 31 along the limit track 35 through the mounting pin 32; the mounting spring 33 is located in the mounting tube 31, and abuts against the inner wall of the mounting tube 31 and the mounting pin 32.

[0036] It should be added that the inner hole of the mounting tube 31 is a stepped hole, and the fastening bolt 5 passes through the small diameter section of the stepped hole and cooperates with the fastening nut, so that the mounting tube 31 is fixed on the mounting frame 1. The mounting pin 32 and the mounting spring 33 are both located in the large diameter section of the stepped hole, and the limiting track 35 is opened on the inner wall of the large diameter section of the stepped hole.

[0037] It should be added that, when the mounting spring 33 is installed into the mounting tube 31, the inner diameter of the mounting spring 33 is slightly larger than the outer diameter of the head of the fastening bolt 5, and the mounting spring 33 is sleeved on the head of the fastening bolt 5, thereby further limiting the mounting spring 33 and ensuring that the mounting spring 33 works stably in the mounting tube 31.

[0038] It should be added that a mounting hole is preset on the mounting ear 2a, and the outer diameter of the tail end of the mounting pin 32 is larger than the diameter of the mounting hole. The mounting pin 32 drives the limiting pin 34 to pass through the mounting hole and is inserted into the mounting tube 31 along the limiting track 35. After the mounting pin 32 is inserted into place, the mounting pin 32 is rotated, and the limiting pin 34 forms an axial limit on the mounting pin 32 in cooperation with the limiting track 35, thereby fixing the instrument body 2.

[0039] like Fig. 9 As shown, in this embodiment, the limiting track 35 is J-shaped and includes a guide portion 35a, a rotating portion 35b, and a limiting portion 35c that are connected in sequence; wherein the guide portion 35a is connected to the end wall of the large diameter section of the mounting tube 31 so that the limiting pin 34 can be inserted into the mounting tube 31.

[0040] The movement process of the limit pin 34 as the installation pin 32 is inserted into the installation cylinder 31 is as follows: first, the limit pin 34 moves along the guide portion 35a until it moves to the bottom of the guide portion 35a, that is, it moves to the opening of the rotating portion 35b; then, the installation pin 32 is rotated, and the limit pin 34 rotates along with the installation pin 32 and rotates in the rotating portion 35b until it rotates to the bottom of the rotating portion 35b, that is, it moves to the opening of the limit portion 35c; under the action of the installation spring 33, the limit pin 34 moves toward the opening of the large diameter section of the installation cylinder 31 along with the installation pin 32, and then enters the limit portion 35c. Under the cooperation of the installation spring 33 and the limit portion 35c, the limit pin 34 is limited in the limit portion 35c, that is, the installation pin 32 is limited in the installation cylinder 31.

[0041] like Fig.10As shown, in this embodiment, the mounting pin 32 is in the shape of a stepped shaft, and the mounting pin 32 includes a first plug-in portion 32a, a second plug-in portion 32b and a knob portion 32c connected in sequence. The outer diameters of the first plug-in portion 32a, the second plug-in portion 32b and the knob portion 32c increase in sequence. The plug-in hole is provided on the first plug-in portion 32a, and the limit pin 34 is installed on the first plug-in portion 32a; when the limit pin 34 is installed on the first plug-in portion 32a, the length of the limit pin 34 is greater than the outer diameter of the first plug-in portion 32a, so as to facilitate adaptation with the limit rail 35. The second plug-in portion 32b is adapted to the mounting hole provided on the mounting ear 2a. The outer diameter of the knob portion 32c is greater than the inner diameter of the mounting hole, so as to axially limit the fixing ear.

[0042] It should be added that in order to improve the smoothness of the limiting pin 34 passing through the mounting hole along with the mounting pin 32, a notch is provided on the mounting hole to facilitate the quick passage of the limiting pin 34.

[0043] In this embodiment, in order to facilitate the operator to rotate the installation pin 32 through the knob portion 32c, a friction layer is bonded to the outer wall of the knob portion 32c, and the friction layer can be made of rubber.

[0044] like Figure 7 As shown, in this embodiment, a limit spring 36 is further installed between the knob portion 32 c and the fixing ear; when the meter body 2 is installed on the mounting frame 1 through the quick release mechanism 3, the limit spring 36 prevents axial movement between the meter body 2 and the mounting frame 1.

[0045] It should be added that, when the limit spring 36 is installed in place, the limit spring 36 always abuts between the rotating portion 35b and the fixed ear. The steps for installing the limit spring 36 are as follows: first, the limit spring 36 is sleeved on the installation pin 32, and then the limit pin 34 is inserted into the limit hole. Preferably, the inner diameter of the limit spring 36 is smaller than the length of the limit pin 34. The advantage of such a design is that when the instrument body 2 is removed, the limit spring 36 is prevented from being lost due to its small size.

[0046] It should be noted that the elastic force of the limit spring 36 is smaller than the elastic force of the installation spring 33 .

[0047] The steps of installing the instrument body 2 on the mounting frame 1 through the quick release mechanism 3 are as follows: first, install the limit spring 36 on the mounting pin 32, and install the limit pin 34 in place; then install the mounting spring 33 into the mounting tube 31, and make the mounting spring 33 sleeved on the head of the fastening bolt 5; then pass the mounting pin 32 through the mounting hole and gradually insert it into the mounting tube 31; the limit pin 34 is inserted into the mounting tube 31 along the limit track 35 through the mounting pin 32, and in this process, the mounting spring 33 is gradually compressed, and the limit pin 34 is gradually compressed. The positioning pin 34 moves along the guide portion 35a until it reaches the bottom of the guide portion 35a, that is, it reaches the opening of the rotating portion 35b; then the installation pin 32 is rotated by the rotating portion 35b, and the limiting pin 34 rotates along with the installation pin 32 and rotates in the rotating portion 35b until it reaches the bottom of the rotating portion 35b, that is, it reaches the opening of the limiting portion 35c; under the action of the installation spring 33, the limiting pin 34 moves along with the installation pin 32 toward the opening of the large diameter section of the installation cylinder 31, and then enters the limiting portion 35c. With the cooperation of the installation spring 33 and the limiting portion 35c, the limiting pin 34 is limited in the limiting portion 35c, that is, the installation pin 32 is limited in the installation cylinder 31.

[0048] During the process of inserting the mounting pin 32 into the mounting tube 31, the limit spring 36 is gradually compressed; when the mounting pin 32 is installed in place, the limit spring 36 is still in a compressed state, so that the meter body 2 is installed on the mounting frame 1 through the quick release mechanism 3. When the meter body 2 needs to be disassembled, only the reverse operation is required.

[0049] Under the elastic force of the mounting spring 33, the limit pin 34 is restricted in the limit portion 35c. Due to the force of the limit spring 36, the meter body 2 and the quick release mechanism 3 are tightly clamped, thereby preventing the meter body 2 from detaching from the mounting frame 1, and realizing quick loading and unloading operations through the quick release mechanism 3.

[0050] like Figure 2-Figure 6 As shown, in this embodiment, the positioning mechanism 4 includes a positioning pin 41 installed on the back of the meter body 2 and a positioning cylinder 42 installed on the mounting frame 1; wherein the positioning cylinder 42 is fixed to the mounting frame 1 by bolts. When installing the meter body 2, first insert the positioning pin 41 into the corresponding positioning cylinder 42 to achieve pre-installation, thereby facilitating the installation of the quick release mechanism 3.

[0051] In this embodiment, a mounting groove 6 is provided on the back of the meter body 2, and the positioning pin 41 is rotatably installed in the mounting groove 6. When the meter body 2 needs to be repaired, the positioning pin 41 is rotated into the mounting groove 6 to prevent the positioning pin 41 from accidentally injuring the maintenance personnel; at the same time, the space occupancy rate of the meter body 2 can also be reduced.

[0052] Specifically, a rotating cavity is provided in the installation groove 6 , and the rotating cavity is communicated with the back of the instrument body 2 ; the positioning pin 41 includes a rotating portion and an inserting portion, the rotating portion is embedded in the rotating cavity, and the inserting portion is located in the installation groove 6 .

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In addition, a person of ordinary skill in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present application and forming different embodiments.

Claims

1. An electric power meter, comprising a meter body (2), characterized in that: It also comprises a mounting frame (1) arranged behind the instrument body (2), mounting ears (2a) being arranged on both sides of the instrument body (2), the instrument body (2) and the mounting frame (1) being connected via a quick release mechanism (3); and a positioning mechanism (4) is also installed between the instrument body (2) and the mounting frame (1).

2. The electric power meter according to claim 1, characterized in that: The mounting frame (1) is a cross-shaped structure, and a waist-shaped hole (1a) is provided on the mounting frame (1).

3. The electric power meter according to claim 2, characterized in that: There are two quick-release mechanisms (3), which correspond to two mounting ears (2a) respectively; the quick-release mechanism (3) comprises a mounting tube (31), a mounting pin (32), and a mounting spring (33); a limit pin (34) is radially inserted at the front end of the mounting pin (32), and a limit track (35) is arranged in the mounting tube (31); the limit pin (34) is inserted into the mounting tube (31) along the limit track (35) through the mounting pin (32); the mounting spring (33) is located in the mounting tube (31) and abuts against the inner wall of the mounting tube (31) and the mounting pin (32).

4. The electric power meter according to claim 3, characterized in that: The inner hole of the mounting tube (31) is a stepped hole, and the fastening bolt (5) passes through the small diameter section of the stepped hole, so that the mounting tube (31) is fixed on the mounting frame (1); the mounting pin (32) and the mounting spring (33) are both located in the large diameter section of the stepped hole.

5. The electric power meter according to claim 4, characterized in that: The limiting track (35) is arranged on the inner wall of the large diameter section of the stepped hole; the limiting track (35) is J-shaped and comprises a guide portion (35a), a rotating portion (35b), and a limiting portion (35c) which are connected in sequence; the guiding portion (35a) is connected to the end wall of the large diameter section of the mounting tube (31).

6. The electric power meter according to claim 3, characterized in that: The mounting pin (32) is in the shape of a stepped shaft, and comprises a first plug-in portion (32a), a second plug-in portion (32b) and a knob portion (32c); the first plug-in portion (32a) cooperates with the mounting tube (31), the second plug-in portion (32b) cooperates with the fixing ear, and the knob portion (32c) performs axial limiting on the fixing ear.

7. The electric power meter according to claim 6, characterized in that: The outer edge surface of the knob portion (32c) is provided with a friction layer.

8. The electric power meter according to claim 7, characterized in that: A limit spring (36) is installed between the knob portion (32c) and the fixing ear.

9. The electric power meter according to claim 1, characterized in that: The positioning mechanism (4) comprises a positioning pin (41) mounted on the back of the instrument body (2) and a positioning cylinder (42) mounted on the mounting frame (1).

10. The electric power meter according to claim 9, characterized in that: The back of the instrument body (2) is provided with a mounting groove (6), and the positioning pin (41) is rotatably mounted in the mounting groove (6).

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