Electric power measuring device

Abstract

The utility model belongs to the field of electric power engineering, and discloses an electric power measuring device, which comprises a first box body, an instrument main body, a data line, a second box body, a winding wheel and a coil spring, and is characterized in that the end part, far away from the first box body, of the winding wheel extends out of the second box body and is fixedly provided with a gear; the rotation stopping unit comprises a mounting plate, a limiting shaft, a rotation stopping block, a first spring, a limiting plate and a control part, the mounting plate is fixed to the outer wall of the second box body, a limiting groove is formed in the mounting plate, the limiting shaft is mounted in the limiting groove, the rotation stopping block is slidably arranged on the limiting shaft in a sleeving mode, the rotation stopping block is in sliding fit with the limiting groove, the limiting shaft is sleeved with the first spring, and the first spring is in sliding fit with the limiting plate. The limiting plate is movably arranged in the limiting groove and located on the side, away from the first spring, of the rotation stopping block, and the upper end of the rotation stopping block is inserted into a tooth groove in the bottom of the gear. The one-way rotation stopping of the gear is achieved through the rotation stopping unit, drawing of the data line is not limited, the data line cannot be rewound, manual operation is not needed all the time in the using process, operation is easy and convenient, and manpower is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power engineering, and in particular relates to an electric power measuring device. Background Art

[0002] Power measurement devices are measuring devices used to provide solutions for power parameter measurement, power quality monitoring and analysis, and electrical equipment control. They are often used in energy management systems, automation systems, smart buildings, smart distribution boards and switch cabinets, etc.

[0003] A Chinese patent with publication number CN220933091U discloses an electric power measuring instrument, comprising a first housing and a second housing, wherein an instrument body is arranged inside the first housing, and a winding wheel is arranged inside the second housing, one end of the winding wheel is rotatably connected to the first housing via a rotating shaft, and the other end of the winding wheel passes through the second housing via the rotating shaft and is connected to a gear, a coil spring is arranged on the outer side of the rotating shaft, and a data line passing through the first housing is arranged on the instrument body; a fixed plate is arranged below the gear, a telescopic rod is arranged on the fixed plate, a connecting plate is arranged at the end of the telescopic rod, a spring is arranged on the outer side of the telescopic rod, and a tooth block adapted to the gear is arranged on the connecting plate; the gear is limited by the tooth block so that the winding wheel cannot be pulled under normal conditions, and the data line can be directly pulled by detaching the tooth block from the gear, thereby lengthening the data line, and performing an electric power test through the measuring head.

[0004] However, in actual use, although the fit between the tooth block and the gear can limit the rotation of the gear, thereby limiting the winding wheel from winding up the data cable, the inability of the winding wheel to rotate also limits the pulling of the data cable from the second box, that is, if you want to stretch the data cable, you need to press the connecting plate, and the operation of stretching the data cable with one hand and pressing the connecting plate with the other hand is not conducive to the operation of workers when the required data cable length is long. In summary, the above solution is cumbersome and labor-intensive when pulling the data cable to extend, which is not conducive to actual use. Utility Model Content

[0005] The utility model aims to provide an electric power measuring device to solve the above-mentioned problem in the prior art that it is complicated to extend the data line.

[0006] In order to achieve the above object, the utility model provides the following technical solutions: an electric power measuring device, comprising

[0007] The first box has an instrument body installed inside, a data line installed on the instrument body, and a measuring head installed at the end of the data line;

[0008] The second box is mounted on the outer wall of the first box, a winding wheel is rotatably mounted in the second box, a coil spring connected to the second box is mounted on the winding wheel, a data line is wound around the winding wheel, and a measuring head is located outside the second box, an end of the winding wheel away from the first box extends to the outside of the second box, and a gear is fixed thereon;

[0009] The stop unit includes a mounting plate, a limit shaft, a stop block, a first spring, a limit plate and a control component. The mounting plate is fixed on the outer wall of the second box body. A limit slot is provided on the mounting plate. The limit shaft is rotatably installed in the limit slot. The stop block is slidably sleeved on the limit shaft, and the stop block and the limit slot are slidably matched. The first spring is sleeved on the limit shaft. The limit plate is movably arranged in the limit slot and is located on the side of the stop block away from the first spring. The upper end of the stop block is inserted into the tooth groove at the bottom of the gear. The control component is used to control the position of the limit plate relative to the limit slot.

[0010] The principle and effect of this technical solution:

[0011] 1. The first box body can protect the instrument body. The setting of the winding wheel and the winding spring of the instrument body can make the winding wheel spontaneously wind up the data line. The setting of the gear and the anti-rotation unit enables the anti-rotation unit to control the rotation of the winding wheel by controlling the rotation of the gear.

[0012] 2. By setting the mounting plate, the limit groove, the limit shaft and the stop block, the stop block can slide in the limit groove along the limit shaft, that is, the position of the stop block can be adjusted relative to the gear, and by setting the first spring and the limit plate, one side of the stop block is abutted by the limit plate and cannot slide, and the other side is driven by the rebound force of the first spring to spontaneously drive the stop block close to the limit plate, that is, when the gear rotates along the data line drawing direction on the winding wheel, the teeth at the bottom of the gear will abut the stop plate, thereby driving the stop plate to compress the first spring, so that the stop plate can make way for the gear, and after the teeth of the gear are separated from the stop block, the stop block will It is reset under the drive of the first spring, that is, it abuts against the limit plate, that is, when the data cable is drawn, the stop unit will not limit the gear, and when the winding spring spontaneously resets and rewinds, that is, when the gear rotates when the data cable is reeled in, the teeth at the bottom of the gear abut against the stop block, and the stop block abuts against the limit plate, and the limit plate cannot move, so that the stop block cannot give way to the rotation of the gear, so that the gear, that is, the winding wheel, cannot rotate, that is, the stop unit can limit the winding of the data cable by the winding wheel, thereby not affecting the drawing of the data cable and avoiding the winding of the data cable. There is no need to control the stop unit all the time when in use, thus saving manpower.

[0013] 3. When the data cable needs to be reeled in, the position of the limit plate can be controlled by the control component, that is, the limit plate is moved toward the side away from the first spring, so that the stop block can be moved away from the gear under the drive of the first spring. At this time, the gear does not abut against the stop block, and then the spontaneous reset of the winding spring can drive the winding wheel to rotate, so that the winding wheel can reel in the data cable, and after the winding is completed, the position of the limit plate relative to the limit groove can be adjusted to restore the stop block to the lower tooth groove of the gear, thereby restoring the limiting capacity for the next time.

[0014] The utility model is further configured as follows: the control member is a rotary cap, one end of the limit shaft passes through the mounting plate and is connected to the rotary cap, an external thread is formed on the limit shaft, and the limit plate is threadedly sleeved on the limit shaft.

[0015] The principle and effect of this technical solution: by providing an external thread on the limit shaft and the limit plate threadedly mounted on the limit shaft, the rotation of the limit shaft can control the limit plate to slide along the limit groove, that is, by controlling the rotation of the screw cap, the limit plate can be controlled to slide relative to the limit groove, and by controlling the position of the limit plate, the position that the stop block can reach under the drive of the elastic force of the first spring can be adjusted, so that the stop block can release the limit on the gear.

[0016] The utility model is further configured as follows: it also includes an auxiliary limiting unit, the auxiliary limiting unit includes a connecting plate, a plug plate, a pressure cap, a second spring, a baffle and a limiting assembly, the connecting plate is fixed on the outer wall of the second box body and is located above the gear, the plug plate is slidably inserted on the connecting plate, the pressure cap is fixed on the top of the plug plate, the second spring is sleeved on the plug plate and is located between the connecting plate and the pressure cap, the baffle is sleeved and fixed on the plug plate, and the top edge is lower than the bottom edge of the connecting plate, the lower end of the plug plate is inserted in the tooth groove at the upper end of the gear, and the limiting assembly is installed on the connecting plate and is used to limit the position of the plug plate relative to the connecting plate.

[0017] The principle and effect of the technical solution are as follows: by setting the connecting plate, the plugging plate and the pressing cap, when the data cable needs to retain the length after being stretched to a certain length and does not need to be extended any further, the plugging plate can be inserted into the tooth groove at the top of the gear under the limit of the connecting plate by pressing the pressing cap, thereby limiting the rotation of the gear. At this time, the data cable can neither be stretched nor retracted, thereby maintaining the length of the data cable. By setting the second spring, the baffle and the limiting assembly, the position of the plugging plate relative to the connecting plate can be fixed, that is, the height of the plugging plate relative to the gear can be adjusted, and after the limit of the plugging plate by the limiting assembly is released, the second spring can spontaneously drive the plugging plate away from the gear, thereby releasing the limit of the plugging plate on the gear, allowing the data cable to continue to extend, or to retract when the anti-rotation unit is not limited.

[0018] The utility model is further configured as follows: a limiting assembly includes a limiting column, a pulling head, a pressure plate, a cover plate and a third spring; a slot is provided on the side wall of the plug plate, a recess is provided on the side wall of the connecting plate, the pressure plate is slidably fitted in the recess, and the pressure plate is sleeved and fixed on the limiting column, the limiting column is inserted in the recess, and the end portion extends into the slot, the cover plate is slidably sleeved on the limiting column, and is installed at one end of the recess away from the plug plate, the third spring is sleeved on the limiting column, and is located between the pressure plate and the cover plate, the pulling head is fixed on the limiting column, and is located on the side of the cover plate away from the pressure plate.

[0019] The principle and effect of the technical solution are as follows: through the arrangement of the cover plate, the pressure plate, the limit column and the third spring, the rebound force of the third spring can spontaneously drive the pressure plate to move toward one side of the plug plate, that is, the pressure plate drives the limit column to spontaneously move toward one side of the plug plate, and then when the plug plate needs to be used to limit the gear, the slot of the plug plate is made to correspond to the limit column by pressing, and the limit column can be spontaneously inserted into the slot, thereby limiting the position of the plug plate, and when the limit needs to be released, it is only necessary to pull the limit column away from the slot through the pull head to release the limit on the plug plate, thereby resetting the plug plate, and at this time, release the pull head, and the limit column can spontaneously limit the plug plate when the limit is required next time, and the use process is simple and convenient, saving manpower.

[0020] The utility model is further configured as follows: one end of the limiting column close to the slot is chamfered.

[0021] The principle and effect of the technical solution: the chamfered setting enables the limit post to enter the slot more easily when it corresponds to the slot, thereby making the limit post's ability to spontaneously perform the limit function more stable and reliable.

[0022] The utility model is further configured as follows: a support foot is installed at the bottom of the first box body.

[0023] The principle and effect of the technical solution: the setting of the support legs can lift the first box off the ground, thereby improving the cleanliness of the first box, and can play a certain role in preventing water accumulation on the ground, thereby improving the safety of the device when in use.

[0024] The utility model is further configured as follows: a protective cover is detachably installed on the outer side of the second box body, and the protective cover is arranged on the measuring head.

[0025] The principle and effect of this technical solution: by setting the protective cover, the measuring head can be protected by the protective cover when not in use, thereby reducing the erosion of the measuring head by the external environment such as air and extending the service life of the measuring head. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the front view of the utility model;

[0027] Figure 2 for Figure 1 Cross-sectional structural diagram;

[0028] Figure 3 for Figure 2 A magnified side view of the structure at the middle box;

[0029] Figure 4 for Figure 3 Enlarged view of point A in . DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:

[0031] The reference numerals in the drawings of the specification include:

[0032] 101, first box; 102, instrument body; 103, data line; 104, measuring head; 105, protective cover; 106, support foot; 107, observation window; 108, ventilation port; 109, dust screen;

[0033] 201, second box; 202, winding wheel; 203, coil spring; 204, gear;

[0034] 301, mounting plate; 302, limiting groove; 303, limiting shaft; 304, anti-rotation block; 305, first spring; 306, limiting plate; 307, screw cap;

[0035] 401, connecting plate; 402, plug plate; 403, pressure cap; 404, second spring; 405, baffle; 406, slot; 407, sink;

[0036] 501, limiting column; 502, pulling head; 503, pressing plate; 504, covering plate; 505, third spring.

[0037] As attached Figure 1-4 As shown, the utility model discloses an electric power measuring device, including a first box body 101, a second box body 201, a stop unit and an auxiliary limit unit. The front of the first box body 101 has an observation window 107, and the side wall of the first box body 101 has a vent 108 and a dustproof net 109. The first box body 101 is equipped with a meter body 102. The observation window 107 is used to display the operation control panel of the meter body 102. The vent 108 and the dustproof net 109 are used for ventilation and dust prevention. The meter body 102 can be a multifunctional electric energy meter or other electric power measuring device. In this solution, the GM-5KV / 10kv Frude insulation resistance meter can be selected. The meter body 102 is equipped with a data line 103, and the end of the data line 103 is equipped with a measuring head 104. The bottom of the first box body 101 is equipped with a support leg 106. The meter body 102 can be used to perform relevant electric power detection on the power facilities.

[0038] The second box body 201 is installed on the outer wall of the first box body 101, and a winding wheel 202 is rotatably installed in the second box body 201. A coil spring 203 connected to the second box body 201 is installed on the winding wheel 202. The data line 103 is wound around the winding wheel 202, and the measuring head 104 is located above the top of the second box body 201. A protective cover 105 is detachably installed on the top of the second box body 201, and its specific detachable manner can be a combination of a thread groove and an external thread. The protective cover 105 is covered on the measuring head 104, and the winding wheel 202 extends from the end away from the first box body 101 to the outside of the second box body 201, and a gear 204 is fixed to it.

[0039] The anti-rotation unit includes a mounting plate 301, a limiting shaft 303, an anti-rotation block 304, a first spring 305, a limiting plate 306 and a control member, wherein the control member is a screw cap 307. The mounting plate 301 is fixed to the outer wall of the second box body 201, and a limiting groove 302 is provided on the mounting plate 301. The limiting shaft 303 is rotatably installed in the limiting groove 302. The anti-rotation block 304 is slidably sleeved on the limiting shaft 303, and the anti-rotation block 304 slides with the limiting groove 302. The first spring 305 is movably matched, and the limit plate 306 is movably arranged in the limit groove 302, and is located on the side of the stop block 304 away from the first spring 305. The upper end of the stop block 304 is inserted into the tooth groove at the bottom of the gear 204. One end of the limit shaft 303 passes through the mounting plate 301 and is connected to the screw cap 307. The limit shaft 303 is provided with an external thread, and the limit plate 306 is threadedly mounted on the limit shaft 303.

[0040] The auxiliary limiting unit includes a connecting plate 401, an insert plate 402, a pressure cap 403, a second spring 404, a baffle 405 and a limiting assembly. The connecting plate 401 is fixed on the outer wall of the second box body 201 and is located above the gear 204. The insert plate 402 is slidably inserted on the connecting plate 401. The pressure cap 403 is fixed to the top of the insert plate 402. The second spring 404 is sleeved on the insert plate 402 and is located between the connecting plate 401 and the pressure cap 403. The baffle 405 is sleeved and fixed on the insert plate 402, and the top edge is lower than the bottom edge of the connecting plate 401. The lower end of the insert plate 402 is inserted into the tooth groove at the upper end of the gear 204.

[0041] The limiting assembly includes a limiting column 501, a pull head 502, a pressure plate 503, a cover plate 504 and a third spring 505. A slot 406 is provided on the side wall of the plug plate 402, and a recess 407 is provided on the side wall of the connecting plate 401. The pressure plate 503 is slidably fitted in the recess 407, and the pressure plate 503 is sleeved and fixed on the limiting column 501. The limiting column 501 is inserted in the recess 407, and the end portion extends into the slot 406. The cover plate 504 is slidably sleeved on the limiting column 501 and is installed at one end of the recess 407 away from the plug plate 402. The third spring 505 is sleeved on the limiting column 501 and is located between the pressure plate 503 and the cover plate 504. The pull head 502 is fixed on the limiting column 501 and is located on the side of the cover plate 504 away from the pressure plate 503. The end of the limiting column 501 close to the slot 406 is chamfered.

[0042] The specific implementation process is as follows:

[0043] When in use, the stop block 304 is moved to the bottom of the gear 204 by controlling the rotary cap 307. At this time, the stop block 304 can stop the gear 204 from driving the data line 103 to rewind, and will not hinder the extension of the data line 103. After the stop block 304 is moved to the point where it is completely out of contact with the gear 204 by rotating the rotary cap 307, the stop block 304 can no longer limit the gear 204, so that the winding wheel 202 can be normally driven by the winding spring 203 to rewind. The plug plate 402 can be used to limit the further extension of the data line 103 or to avoid the gear 103 from being extended further due to the sudden release of the stop unit. When the restriction of the gear 204 causes the sudden recovery of the data cable 103 to injure the staff, the plug plate 402 is inserted into the tooth groove at the top of the gear 204, so that the rotation of the gear 204 will be restricted by the plug plate 402. After the restriction of the gear 204 by the anti-rotation unit is released, the staff only needs to control the data cable 103 with one hand and pull the pull head 502 with the other hand to release the restriction of the gear 204 by the auxiliary limiting unit, thereby making the recovery of the data cable 103 safer and more reliable, and the drawing of the data cable 103 can also be limited, making the device more flexible and changeable when used.

[0044] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical scheme or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the technical scheme of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An electric power measuring device, characterized in that: include A first box body, in which a meter body is installed, a data line is installed on the meter body, and a measuring head is installed at the end of the data line; A second box body is installed on the outer wall of the first box body, a winding wheel is rotatably installed in the second box body, a coil spring connected to the second box body is installed on the winding wheel, the data line is wound around the winding wheel, and the measuring head is located on the outside of the second box body, and the end of the winding wheel away from the first box body extends to the outside of the second box body and is fixed with a gear; The stop unit includes a mounting plate, a limit shaft, a stop block, a first spring, a limit plate and a control component. The mounting plate is fixed to the outer wall of the second box body. The mounting plate is provided with a limit slot. The limit shaft is rotatably installed in the limit slot. The stop block is slidably sleeved on the limit shaft, and the stop block is slidably matched with the limit slot. The first spring is sleeved on the limit shaft. The limit plate is movably arranged in the limit slot and is located on the side of the stop block away from the first spring. The upper end of the stop block is inserted into the tooth groove at the bottom of the gear. The control component is used to control the position of the limit plate relative to the limit slot.

2. An electric power measuring device as claimed in claim 1, characterized in that: The control component is a screw cap, one end of the limit shaft passes through the mounting plate and is connected to the screw cap, an external thread is formed on the limit shaft, and the limit plate is threadedly mounted on the limit shaft.

3. The power measuring device according to claim 1, characterized in that: The gear assembly further comprises an auxiliary limiting unit, which comprises a connecting plate, an insert plate, a pressure cap, a second spring, a baffle plate and a limiting assembly. The connecting plate is fixed on the outer wall of the second box body and is located above the gear. The insert plate is slidably inserted on the connecting plate. The pressure cap is fixed on the top of the insert plate. The second spring is sleeved on the insert plate and is located between the connecting plate and the pressure cap. The baffle plate is sleeved and fixed on the insert plate, and the top edge is lower than the bottom edge of the connecting plate. The lower end of the insert plate is inserted into the tooth groove at the upper end of the gear. The limiting assembly is installed on the connecting plate and is used to limit the position of the insert plate relative to the connecting plate.

4. An electric power measuring device as claimed in claim 3, characterized in that: The limiting assembly includes a limiting column, a pulling head, a pressure plate, a cover plate and a third spring. A slot is provided on the side wall of the plug plate, and a recess is provided on the side wall of the connecting plate. The pressure plate is slidably fitted in the recess, and the pressure plate is sleeved and fixed on the limiting column. The limiting column is inserted in the recess, and the end portion extends into the slot. The cover plate is slidably sleeved on the limiting column and is installed at one end of the recess away from the plug plate. The third spring is sleeved on the limiting column and is located between the pressure plate and the cover plate. The pulling head is fixed on the limiting column and is located on a side of the cover plate away from the pressure plate.

5. An electric power measuring device as claimed in claim 4, characterized in that: One end of the limiting column close to the slot is chamfered.

6. The power measuring device according to claim 1, characterized in that: The bottom of the first box is provided with supporting feet.

7. The power measuring device according to claim 1, characterized in that: A protective cover is detachably mounted on the outer side of the second box body, and the protective cover is arranged on the measuring head.

Images