Electric energy quality detection equipment

Abstract

The utility model discloses electric energy quality detection equipment, which relates to the technical field of detection equipment, and comprises a box body and a top cover rotationally connected to one end of the top of the box body, winding rollers are symmetrically arranged on the inner side wall of the top cover along the height direction of the top cover along the two ends of the length direction of the top cover respectively, and the axial direction of the winding rollers is parallel to the height direction of the top cover. A connecting line is wound on the outer arc wall of the winding roller, and a locking mechanism is coaxially fixed to the end, close to the inner side wall of the top cover, of the winding roller. According to the utility model, the winding roller is used for winding the connecting wire, and when a user uses the device, the winding roller can be driven to unwind by inserting one end into the interface of the detection equipment and pulling the other end, so that each connecting wire can be independently wound, and the user can operate the device conveniently; influences on detection caused by disordered lines on a detection site are avoided, and retraction of the winding roller after the connecting line is pulled out during detection is prevented through the locking mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a power quality detection equipment. Background Technique

[0002] Power quality detection equipment is an instrument used to monitor and analyze the power quality in the power system. It can measure and record parameters such as voltage, current, frequency, power factor, harmonics, etc. to evaluate the stability and reliability of the power system. These devices have a wide range of applications in multiple scenarios such as the power industry, industrial manufacturing, data centers, and new energy fields. For example, in the power industry, power quality detection equipment can help power companies monitor the grid status, timely detect and solve power quality problems such as voltage fluctuations and harmonic pollution to ensure the stability and safety of power supply. In industrial manufacturing, these devices can ensure the normal operation of production equipment and avoid equipment failures or production interruptions caused by power quality problems.

[0003] During the use of existing power quality detection equipment, multiple lines usually need to be connected for different measurements and data analysis. However, these lines are often not effectively stored and managed at the detection site, and are easily damaged by being stepped on, pulled, or affected by other external forces. It also increases the possibility of the lines being entangled with each other, resulting in signal interference or transmission errors, and affecting the accuracy of the detection results.

[0004] In view of this, this application is specifically proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a power quality detection equipment to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, a power quality detection equipment provided by the utility model includes a box body and a top cover rotatably connected to one end of the top of the box body. On the inner side wall of the top cover along its height direction, winding rollers with axes parallel to the height direction of the top cover are symmetrically arranged at both ends along the length direction of the top cover. A connecting line is wound around the outer arc wall of the winding roller, and a locking mechanism is coaxially fixed at one end of the winding roller close to the inner side wall of the top cover.

[0007] A connecting line is wound around the outer arc wall of the winding roller. A fixing ring is coaxially fixed in the middle of the outer arc wall of the winding roller. A notch is radially opened on one side of the outer arc wall of the fixing ring. An elastic buckle is arranged in the notch on the outer arc wall of the fixing ring. The middle of the outer arc wall of the connecting line is clamped in the elastic buckle. The two ends of the connecting line are respectively spirally wound around both ends of the outer arc wall of the winding roller, and the winding directions of the two ends of the connecting line are opposite. A connector is fixed at the end of the connecting line.

[0008] The locking mechanism includes a cylinder body rotatably connected to the bottom of the winding roller. An internal gear ring I is coaxially arranged inside the cylinder body. On the side of the internal gear ring I away from the winding roller, an internal gear ring II is coaxially fixed. On the inner sides of the internal gear ring I and the internal gear ring II, there is the same fixed plate. On the side of the fixed plate close to the winding roller, there is the same transmission block fixed. At both ends of the transmission block along its length direction, there are sliding limit sliders. At the end parts of the two limit sliders away from each other, there are respectively a pawl I and a pawl II meshing with the internal gear ring I and the internal gear ring II.

[0009] Further, on the inner arc walls of both the internal gear ring I and the internal gear ring II, there are spines with the same structure, and the spines on the inner arc walls of the internal gear ring I and the internal gear ring II have opposite helix directions. The pawl I meshes with the internal gear ring I, and the pawl II meshes with the internal gear ring II. The transmission block includes a fixed shaft fixed to the bottom of the winding roller. At the end of the fixed shaft away from the winding roller, there is a fixed plate. The length direction of the fixed plate is parallel to the radial direction of the internal gear ring I. On the side wall of the fixed plate close to the winding roller, at both ends along the length direction of the fixed plate, there are sliding connections with limit sliders. The limit sliders can slide relative to the fixed plate along the length direction of the fixed plate. On the outer side walls of the limit sliders and the fixed shaft close to each other, there is the same reset compression spring fixed. The pawl I and the pawl II are respectively fixed to the end parts of the two limit sliders away from each other.

[0010] Further, on the side walls of the two limit sliders close to the winding roller, there are respectively inclined chutes, and the inclined chutes on the two limit sliders are rotationally symmetric about the axis of the winding roller. Inside the inclined chutes, there are fixed columns. The axial direction of the fixed columns is parallel to the axial direction of the winding roller. The outer arc wall of the fixed columns abuts against the inner arc wall of the inclined chutes. The fixed columns are fixed to the winding roller.

[0011] Further, a gear is rotatably connected to the bottom of the cylinder body. The transmission block is fixed to the center of the side wall of the gear close to the winding roller. On the inner side wall of the top cover along its height direction, at the position corresponding to the gear, there is a chute. The length direction of the chute is the same as the width direction of the top cover. The gear is located inside the chute. One side of the gear is meshed with a horizontally arranged rack bar. The side wall of the rack bar away from the gear is fixed to the inner side wall of the chute. The side wall of the gear away from the cylinder body slides and abuts against the inner side wall of the chute along the height direction of the top cover.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The connecting wires are wound by the winding roller. When in use, the user only needs to insert one end into the interface of the detection device and drive the winding roller to unwind by pulling the other end, so that each connecting wire has an independent winding, which is convenient for the user to operate and avoids the influence on detection caused by messy wires at the detection site. And through the locking mechanism, it is prevented that the winding roller retracts after the connecting wire is pulled out during detection.

[0014] 2. Wind the connecting line around the winding roller in a double-ended reverse spiral manner. In cooperation with the gear and rack rod, when the user pulls the end of the connecting line, the rotation of the winding roller can unwind both ends simultaneously, thereby reducing the pulling force on the connecting line. The gear and the rack rod can adaptively drive the winding roller to displace to avoid the accumulation of the connecting line at the end connected to the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the connection relationship between the winding roller and the locking mechanism in a power quality detection device Figure 1 ;

[0016] Figure 2 Schematic diagram of the connection relationship between the winding roller and the locking mechanism in a power quality detection device from a top-down perspective;

[0017] Figure 3 Schematic diagram of the structure of the locking mechanism located inside the sleeve in a power quality detection device;

[0018] Figure 4 Exploded view of the structure of the locking mechanism in a power quality detection device;

[0019] Figure 5 Schematic diagram of the overall structure of a power quality detection device.

[0020] In the figure:

[0021] 10. Box body; 11. Top cover; 12. Winding roller; 13. Connecting line; 14. Connector; 15. Fixed ring;

[0022] 20. Cylinder; 21. First internal gear ring; 22. First pawl; 23. Second internal gear ring; 24. Second pawl;

[0023] 25. Limit slider; 26. Fixed column; 27. Return compression spring;

[0024] 30. Gear; 31. Rack rod; 32. Fixed plate; 33. Fixed shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to the attached Figure 1 to the attached Figure 5, a power quality detection device provided by the utility model: includes a box body 10 and a top cover 11 rotatably connected to one end of the top of the box body 10. On the inner side wall of the top cover 11 along its height direction, winding rollers 12 with axes parallel to the height direction of the top cover 11 are symmetrically arranged at both ends along the length direction of the top cover 11. A connecting line 13 is wound around the outer arc wall of the winding roller 12. One end of the winding roller 12 close to the inner side wall of the top cover 11 is coaxially fixed with a locking mechanism;

[0027] The locking mechanism includes a cylinder body 20 rotatably connected to the bottom of the winding roller 12. An internal gear ring one 21 is coaxially arranged in the cylinder body 20. On the side of the internal gear ring one 21 away from the winding roller 12, an internal gear ring two 23 is coaxially fixed. Inside the internal gear ring one 21 and the internal gear ring two 23, there is the same fixing plate 32. On the side of the fixing plate 32 close to the winding roller 12, there is a same transmission block fixed. At both ends of the transmission block along its length direction, limit sliders 25 are slidably arranged. At the ends of the two limit sliders 25 away from each other, there are respectively a pawl one 22 and a pawl two 24 meshing with the internal gear ring one 21 and the internal gear ring two 23;

[0028] The inner arc walls of the internal gear ring one 21 and the internal gear ring two 23 are both provided with the same structure of ratchet teeth and the helix directions of the ratchet teeth on the inner arc walls of the internal gear ring one 21 and the internal gear ring two 23 are opposite. The pawl one 22 meshes with the internal gear ring one 21, and the pawl two 24 meshes with the internal gear ring two 23. The transmission block includes a fixed shaft 33 fixed to the bottom of the winding roller 12. One end of the fixed shaft 33 away from the winding roller 12 is fixed with a fixing plate 32. The length direction of the fixing plate 32 is parallel to the radial direction of the internal gear ring one 21;

[0029] On the side wall of the fixing plate 32 close to the winding roller 12, limit sliders 25 are slidably connected at both ends along the length direction of the fixing plate 32. The limit sliders 25 can slide relative to the fixing plate 32 along the length direction of the fixing plate 32. On the outer side walls of the limit sliders 25 and the fixed shaft 33 close to each other, there is the same reset compression spring 27 fixed. The pawl one 22 and the pawl two 24 are respectively fixed to the ends of the two limit sliders 25 away from each other;

[0030] On the side walls of the two limit sliders 25 close to the winding roller 12, inclined chutes are respectively opened, and the inclined chutes on the two limit sliders 25 are rotationally symmetric about the axis of the winding roller 12. A fixed column 26 is arranged in the inclined chute. The axis of the fixed column 26 is parallel to the axis of the winding roller 12. The outer arc wall of the fixed column 26 abuts against the inner arc wall of the inclined chute. The fixed column 26 is fixed to the winding roller 12;

[0031] A gear 30 is rotatably connected to the bottom of the cylinder body 20. A transmission block is fixed at the center of one side wall of the gear 30 close to the winding roller 12. A chute is provided on the inner side wall of the top cover 11 along its height direction at a position corresponding to the gear 30. The length direction of the chute is the same as the width direction of the top cover 11. The gear 30 is located in the chute. One side of the gear 30 is meshed with a horizontally arranged rack bar 31. The side wall of the rack bar 31 away from the gear 30 is fixed to the inner side wall of the chute. The side wall of the gear 30 away from the cylinder body 20 is slidably abutted against the inner side wall of the chute along the height direction of the top cover 11.

[0032] It should be noted that: A tension spring is fixed to one end of the outer arc wall of the cylinder body 20 close to the inner side wall of the top cover 11. The other end of the tension spring away from the cylinder body 20 is fixed to the inner side wall of the top cover 11;

[0033] The inclined chute penetrates through the limit slider 25. One end of the fixed column 26 away from the winding roller 12 is arranged in the inclined chute. When the winding roller 12 rotates actively, whether the winding roller 12 rotates clockwise or counterclockwise, one of the pawl one 22 and the pawl two 24 will surely not obstruct the corresponding internal tooth ring one 21 and internal tooth ring two 23;

[0034] For example: When the winding roller 12 rotates in one direction, the internal tooth ring one 21 and the pawl one 22 will not block each other, but the internal tooth ring two 23 and the pawl two 24 will block each other. However, since the rotation of the winding roller 12 drives the rotation of the fixed column 26 synchronously, the fixed column 26 will abut against the inner side wall of the inclined chute on the limit slider 25, thereby forcing the limit slider 25 to slide towards the axis of the winding roller 12. At this time, the pawl two 24 at the end of the limit slider 25 will not engage with the internal tooth ring two 23 and thus will not cause an obstruction;

[0035] That is, when the user pulls the free end of the connecting line 13, the winding roller 12 can rotate unobstructed, and thus the winding roller 12 can unwind. At the same time, the winding roller 12 will drive the fixed shaft 33, and then drive the fixing plate 32, and then drive the gear 30 to rotate. The meshing of the gear 30 and the rack bar 31 will in turn drive the horizontal displacement of the winding roller 12, so as to adapt to the unwinding of the end of the connecting line 13 close to the box body 10 and avoid the accumulation of the unwound connecting line 13 on this side;

[0036] At the same time, when the traction is in place, the tension spring on the outer arc wall of the cylinder body 20 has a reset tendency, and thus pulls the winding roller 12 and the locking mechanism as a whole to reset. However, at this time, the driving end of the movement changes from the winding roller 12 to the gear 30. When the gear 30 rotates actively, since the gear 30 cannot drive the fixed column 26 to rotate, the internal tooth ring one 21 will engage with the pawl one 22, and the internal tooth ring two 23 will engage with the pawl two 24, and thus cannot rotate, achieving the purpose of locking.

[0037] Please refer to Appendix Figure 1 to AppendixFigure 5 The present utility model provides a technical solution: a connecting line 13 is wound around the outer arc wall of the winding roller 12. A fixing ring 15 is coaxially fixed in the middle of the outer arc wall of the winding roller 12. A notch is radially formed on one side of the outer arc wall of the fixing ring 15 along the radial direction of the winding roller 12. An elastic buckle is arranged in the notch on the outer arc wall of the fixing ring 15. The middle of the outer arc wall of the connecting line 13 is clamped in the elastic buckle;

[0038] Both ends of the connecting line 13 are respectively wound around the two ends of the outer arc wall of the winding roller 12 in a spiral manner, and the winding directions of the two ends of the connecting line 13 are opposite. A joint 14 is fixed at the end of the connecting line 13.

[0039] It should be noted that: the fixing ring 15 is used to demarcate the winding of the two ends of the connecting line 13. A detection device is arranged in the box body 10. One end of the connecting line 13 is used to be connected to the interface of the detection device, and the other end of the connecting line 13 is a detection end, which is used to be connected to the circuit or device to be detected;

[0040] The reason for adopting the double - spiral end - winding is that if the whole connecting line 13 is directly wound around the outer arc wall of the winding roller 12 in a single - spiral manner, then during use, if the winding roller 12 is kept fixed, it is necessary to manually unwind the connecting line 13 from the winding roller 12 in a reverse spiral. If the winding roller 12 is kept rotating, only one end can be unwound at a time, and the other end will be wound while one end is being unwound;

[0041] However, by adopting the double - spiral end - winding, pulling one end will drive the winding roller 12 to rotate and at the same time unwind the other end, which is more convenient.

[0042] Working principle:

[0043] When the user pulls the free end of the connecting line 13, the winding roller 12 can rotate unhindered. Then the winding roller 12 can unwind the two ends of the connecting line 13 synchronously. At this time, the other end of the connecting line 13 can be fixed to the interface of the detection device. At the same time, the winding roller 12 will drive the fixed shaft 33, then drive the fixing plate 32, and then drive the gear 30 to rotate. The meshing of the gear 30 and the rack bar 31 drives the horizontal displacement of the winding roller 12 in the reverse direction, so as to adapt to the unwinding of the end of the connecting line 13 close to the box body 10, and avoid the accumulation of the unwound connecting line 13 on this side;

[0044] At the same time, when the traction is in place, the tension spring on the outer arc wall of the cylinder body 20 has a tendency to reset, and then pulls the winding roller 12 and the locking mechanism as a whole to reset. But at this time, the driving end of the movement changes from the winding roller 12 to the gear 30. When the gear 30 rotates actively, since the gear 30 cannot drive the fixed column 26 to rotate, the inner tooth ring one 21 will engage with the pawl one 22, and the inner tooth ring two 23 will engage with the pawl two 24, and then cannot rotate, achieving the purpose of locking and preventing the retraction of the winding roller 12 from causing additional pulling on the connecting line 13.

Claims

1. A power quality detection device, comprising a box body (10) and a top cover (11) rotatably connected to one end of the top of the box body (10), characterized in that: On the inner side wall of the top cover (11) along its height direction, winding rollers (12) with axes parallel to the height direction of the top cover (11) are symmetrically arranged at both ends along the length direction of the top cover (11). A connecting line (13) is wound around the outer arc wall of the winding roller (12), and a locking mechanism is coaxially fixed at one end of the winding roller (12) close to the inner side wall of the top cover (11). The locking mechanism includes a cylinder body (20) rotatably connected to the bottom of the winding roller (12). An internal gear ring one (21) is coaxially arranged in the cylinder body (20). An internal gear ring two (23) is coaxially fixed on the side of the internal gear ring one (21) away from the winding roller (12). A same fixing plate (32) is arranged inside the internal gear ring one (21) and the internal gear ring two (23). A same transmission block is fixed on the side of the fixing plate (32) and the winding roller (12) close to each other. Limiting sliders (25) are slidably arranged at both ends of the transmission block along its length direction. Pawl one (22) and pawl two (24) meshing with the internal gear ring one (21) and the internal gear ring two (23) are respectively arranged at the ends of the two limiting sliders (25) away from each other.

2. The power quality detection device according to claim 1, characterized in that: The inner arc walls of the internal gear ring one (21) and the internal gear ring two (23) are both provided with spines with the same structure, and the spines on the inner arc walls of the internal gear ring one (21) and the internal gear ring two (23) have opposite helix directions. The pawl one (22) meshes with the internal gear ring one (21), and the pawl two (24) meshes with the internal gear ring two (23). The transmission block includes a fixed shaft (33) fixed to the bottom of the winding roller (12). One end of the fixed shaft (33) away from the winding roller (12) is fixed with a fixing plate (32). The length direction of the fixing plate (32) is parallel to the radial direction of the internal gear ring one (21).

3. A power quality detection device according to claim 2, characterized in that: On the side wall of the fixing plate (32) close to the winding roller (12), limiting sliders (25) are slidably connected at both ends along the length direction of the fixing plate (32). The limiting sliders (25) can slide relative to the fixing plate (32) along the length direction of the fixing plate (32). A same reset compression spring (27) is fixed on the outer side walls of the limiting sliders (25) and the fixed shaft (33) close to each other. The pawl one (22) and the pawl two (24) are respectively fixed at the ends of the two limiting sliders (25) away from each other.

4. A power quality detection device according to claim 1, characterized in that: Slant chutes are respectively arranged on the side walls of the two limiting sliders (25) close to the winding roller (12), and the slant chutes on the two limiting sliders (25) are rotationally symmetric about the axis of the winding roller (12). A fixed column (26) is arranged in the slant chutes. The axis of the fixed column (26) is parallel to the axis of the winding roller (12). The outer arc wall of the fixed column (26) abuts against the inner arc wall of the slant chutes. The fixed column (26) is fixed on the winding roller (12).

5. The power quality detection device according to claim 1, characterized in that: A gear (30) is rotatably connected to the bottom of the cylinder body (20). The transmission block is fixed at the center of the side wall of the gear (30) close to the winding roller (12). A chute is arranged at the position corresponding to the gear (30) on the inner side wall of the top cover (11) along its height direction. The length direction of the chute is consistent with the width direction of the top cover (11). The gear (30) is located in the chute.

6. The power quality detection device according to claim 5, characterized in that: One side of the gear (30) is meshed and connected with a horizontally arranged rack bar (31). One side wall of the rack bar (31) far from the gear (30) is fixed on the inner side wall of the chute, and one side wall of the gear (30) far from the cylinder body (20) is slidably abutted against the inner side wall of the chute along the height direction of the top cover (11).

7. The power quality detection device according to claim 1, characterized in that: A connecting line (13) is wound around the outer arc wall of the winding roller (12). A fixing ring (15) is coaxially fixed in the middle of the outer arc wall of the winding roller (12). A notch is formed in one side of the outer arc wall of the fixing ring (15) along the radial direction of the winding roller (12). An elastic buckle is arranged in the notch on the outer arc wall of the fixing ring (15). The middle of the outer arc wall of the connecting line (13) is clamped in the elastic buckle.

8. A power quality detection device according to claim 7, characterized in that: Both ends of the connecting line (13) are respectively wound around the two ends of the outer arc wall of the winding roller (12) in a spiral manner, and the winding directions of the two ends of the connecting line (13) are opposite. A joint (14) is fixed at the end of the connecting line (13).

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