CN111595224A

CN111595224A - Low-voltage wire section measuring instrument

Info

Publication number: CN111595224A
Application number: CN202010430912.8A
Authority: CN
Inventors: 林斌; 谢志研; 李�浩; 范永洪
Original assignee: Guangdong Power Grid Co Ltd; Zhaoqing Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Zhaoqing Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-08-28

Abstract

The invention relates to the technical field of measuring devices, in particular to a low-voltage wire section measuring instrument which comprises an upper clamping piece, a lower clamping piece, a main body and a driving rod, wherein the driving rod is connected with the upper clamping piece, the lower clamping piece is connected with the main body, scale marks are arranged on the main body, and the driving rod is movably connected with the main body through a thread pair. The wire can be accurately and efficiently measured.

Description

Low-voltage wire section measuring instrument

Technical Field

The invention relates to the technical field of measuring devices, in particular to a low-voltage wire section measuring instrument.

Background

In the process of checking and accepting the nuclear quantity of distribution network infrastructure projects, low-voltage wires with various wire diameters are often distinguished and confirmed, but the following difficulties exist:

1. at present, the specifications of low-voltage wires in operation are various, sun-rain marks are fuzzy, and the differences among the specifications are not large and cannot be distinguished by naked eyes.

2. The low-voltage lead is erected at the height of about 3 meters, and distance measurement needs to be carried out by means of a ladder if the wire diameter of the low-voltage lead is to be distinguished, so that the low-voltage lead is dangerous and low in efficiency.

Because there is not convenient effectual measuring tool, the overhead conductor model that only relies on the naked eye to judge along the pole erects appears the deviation easily, thereby the conductor of erectting on the pole because the observer receives the visual error that subjective factors influence brought such as height, angle and light sense objective factor and experience, responsibility heart influences design accuracy and planning degree of depth, brings follow-up series problem, audit risk and other harmful effects.

Meanwhile, as an electric power enterprise, power grid construction and operation maintenance are two major core services, and power supply stations and engineering participating units often need to cross with low-voltage overhead conductors in project establishment, drawing design, engineering acceptance and operation rush-repair processes. In the case of low voltage overhead conductors themselves, the identification of the model is of utmost importance. At present, the management requirements of distribution network engineering, major repair engineering improvement and emergency repair engineering are more and more precise, and the in-place standard execution is more and more standard and strict. In the face of overhead conductors which are frequently used for making intersections in core services, no model measuring tool or a more direct and effective model determining means is available at present.

Publication No.: CN210014731U discloses an overhead conductor model measuring tool, including interior component and outer component, outer component sliding sleeve locates on the interior component, outer component is connected with outer measuring arm, the interior component is connected with interior measuring arm, be equipped with the dial on the outer component, the interior component is connected with the pointer piece with the dial complex, the device adopts gliding mode to drive the component, and need fix the relative position of component through the locating part, measurement accuracy is low like this, and the component shifts easily and is difficult to carry out accurate measurement.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a low-voltage wire section measuring instrument which can accurately and efficiently measure a wire.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a low pressure wire cross-section measuring apparatu, includes clamping piece, lower clamping piece, main part and actuating lever, actuating lever and last clamping piece be connected, lower clamping piece be connected with the main part, the main part on be equipped with the scale mark, the actuating lever pass through vice and main part swing joint of screw thread.

In the device, a worker can clamp a wire tightly through the device and read the section numerical value of the wire through the scale marks on the main body, when in operation, the worker drives the driving rod upwards firstly to open a larger distance between the upper clamping piece and the lower clamping piece, then the device is lifted to the position of the cable to be measured to place the cable to be measured in the gap between the upper clamping piece and the lower clamping piece, then the driving rod is driven downwards to drive the upper clamping piece to move towards the lower clamping piece, the cable to be measured is clamped tightly under the combined action of the upper clamping piece and the lower clamping piece, the position of the driving rod and the main body is changed at the moment, the worker can read the section numerical value of the wire at the moment through reading the position of the driving rod at the scale marks, the worker does not need to climb for many times to measure the section numerical value of the wire through the device, the working efficiency can be effectively improved, and the labor intensity, physical power is saved, and in addition, the test mode can also enable the measurement to be simpler and more visual. Particularly, this device adopts the screw thread pair to drive the actuating lever, and the mode of this kind of drive regulation can control the interval between last clamping piece and the lower clamping piece accurately, and when loosening the regulation effort, goes up the relative position between clamping piece and the lower clamping piece and also can not shift, consequently has higher measurement accuracy.

Further, the main part in be equipped with the cavity, the actuating lever activity set up in the cavity, the actuating lever include the first body of rod and cover body, the activity of the first body of rod set up in the cavity, first body of rod one end be connected with last clamping piece, the other end and cover body coupling, cover body movable sleeve establish in the main part. When the worker controls the action of the upper clamping piece, the worker drives the first rod body to act by controlling the sleeve body to act so as to drive the upper clamping piece to act.

Further, the main part both ends be provided with the opening of intercommunication cavity respectively, the upper end of the first body of rod wear out and be connected with last clamping piece from main part upper end opening, the first body of rod lower extreme wear out and be connected with the cover body from main part lower extreme opening. The cover body is located the lower extreme of main part, through the action of the control sleeve body drive first body of rod action to the drive is located the last clamping piece action of main part upper end, when detecting the wire, the staff only need upwards lift this device to wire position, and the clamping piece action can be controlled through the cover body of main part below, and the staff can need not to scramble many times like this and measure the wire, saves physical power.

Furthermore, the thread pair comprises a first thread part and a second thread part, the first thread part is an internal thread arranged on the inner wall of the sleeve body, the second thread part is an external thread arranged on the outer wall of the main body, and the first thread part and the second thread part are matched with each other. The staff is in the control when the clamping piece opens and shuts down with lower clamping piece, through the cover body of wrench movement main part lower extreme, make the first body of rod do the action that upwards stretches out or income downwards under the pushing action of screw thread, thereby realize the adjustment of interval between clamping piece and the lower clamping piece, in addition, because first screw thread portion and second screw thread portion mutually support, consequently when last clamping piece presss from both sides tight wire with lower clamping piece combined action, even the staff withdraws the effort to the cover body, go up the clamping piece and also can not shift because of gravity action with lower clamping piece, consequently can keep going up the relative position between clamping piece and the lower clamping piece well, make things convenient for follow-up reading, can read the wire parameter accurately.

Furthermore, the thread pair comprises a third thread part and a fourth thread part, the third thread part is an internal thread arranged on the inner wall of the cavity, the fourth thread part is an external thread arranged on the outer wall of the first rod body, and the third thread part and the fourth thread part are matched with each other. Under the action of the third thread part and the fourth thread part, the first rod body can be driven to move upwards or downwards by rotating the first rod body, so that the upper clamping piece is driven to move.

Further, the actuating lever include the second body of rod, the main part outside connect and set up the nut, the second body of rod be the threaded rod, threaded rod and nut cooperation, the threaded rod on be equipped with the instruction piece, threaded rod tip and last clamping piece be connected. Under the action of the third thread part and the fourth thread part, the first rod body can be driven to move upwards or downwards by rotating the first rod body, so that the upper clamping piece is driven to move.

Furthermore, the handle is further included, and the handle is connected with the end part of the second rod body. The holding area can be increased by rotating the handle, and the second rod body is convenient for workers to rotate.

Further, last clamping piece be equipped with the shrinkage pool, the shrinkage pool be provided with the annular along circumference, actuating lever tip outer wall be provided with the lug along circumference, the lug card go into in the annular, the lug slide in the annular. When the driving rod moves upwards, the driving rod pushes the upper clamping piece upwards, and when the driving rod moves downwards, the driving rod and the upper clamping piece cannot be separated from each other due to the effect of the convex block, so that the driving rod drives the upper clamping piece to move downwards.

Furthermore, the upper clamping piece, the lower clamping piece, the main body and the driving rod are all made of insulating materials. The insulating material can effectively prevent the worker from electric shock, and the safety of the worker is ensured.

Furthermore, the marking value of the scale mark is the wire diameter of the conductor of the lead, and the wire diameter of the conductor is obtained by subtracting the thickness conversion of the national standard lead insulation layer from the diameter stroke measured by clamping the lead by the upper clamping piece and the lower clamping piece. The scale mark can clearly show the actual line diameter size, and the measurement is more intuitive and accurate.

Compared with the prior art, the invention has the beneficial effects that: this device need not staff's climbing many times and carries out the wire and measure, and through converting the line footpath numerical value of actual wire inner core into with the scale mark, can make wire line footpath measure simply directly perceived, improves the efficiency that the line footpath was confirmed effectively, and this device adopts the vice driven mode of screw thread, can guarantee to go up the clamping piece and can not shift easily down the clamping piece for measurement accuracy is higher.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure in embodiment 2 of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a schematic view of the internal structure in embodiment 1 of the present invention;

fig. 5 is a schematic view of the internal structure in embodiment 3 of the present invention.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Example 1:

as shown in fig. 4, the low-voltage wire section measuring instrument includes an upper clamping piece 10, a lower clamping piece 20, a main body 30 and a driving rod, wherein, in this embodiment, the main body 30 is a cylindrical structure, a cavity is provided in the main body 30, openings communicating with the cavity are provided at two ends of the main body 30, and the lower clamping piece 20 is fixedly connected to an outer wall at an upper end of the main body 30. The driving rod comprises a first rod body 401 and a sleeve body 50, the first rod body 401 is movably arranged in the cavity, the upper end of the first rod body 401 penetrates out of an opening at the upper end of the main body 30 and is connected with the upper clamping piece 10, the lower end of the first rod body 401 penetrates out of an opening at the lower end of the main body 30 and is connected with the sleeve body 50, and the sleeve body 50 is movably sleeved on the outer wall of the main body 30.

In the present embodiment, the driving rod is movably connected to the main body 30 through a screw pair, specifically, the screw pair includes a first screw portion 501 and a second screw portion 303, the first screw portion 501 is an internal screw disposed on an inner wall of the sheath 50, the second screw portion 303 is an external screw disposed on an outer wall of the main body 30, and the first screw portion 501 and the second screw portion 303 are engaged with each other. When the worker controls the upper clamping piece 10 and the lower clamping piece 20 to open and close, the sleeve body 50 at the lower end of the main body 30 is twisted, the first rod body 401 is enabled to do the action of upwards extending or downwards retracting under the pushing action of the threads, so that the adjustment of the distance between the upper clamping piece 10 and the lower clamping piece 20 is realized, in addition, the first thread part 501 and the second thread part 303 are matched with each other, when the upper clamping piece 10 and the lower clamping piece 20 jointly act to clamp a wire, even if the worker withdraws the acting force on the sleeve body 50, the upper clamping piece 10 and the lower clamping piece 20 cannot shift due to the action of gravity, so that the relative position between the upper clamping piece 10 and the lower clamping piece 20 can be well kept, the subsequent reading is facilitated, and the wire parameters can be accurately read.

Specifically, as shown in fig. 3, the upper clip 10 is provided with a concave hole 101, the concave hole 101 is provided with a ring groove 102 along the circumferential direction, the outer wall of the end portion of the first rod 401 is provided with a convex block along the circumferential direction, the convex block is clamped in the ring groove 102, and the convex block slides in the ring groove 102. When the first rod 401 moves upward, the first rod 401 pushes the upper clamping piece 10 upward, and when the first rod 401 moves downward, the first rod 401 and the upper clamping piece 10 cannot be separated due to the effect of the bump, so that the first rod 401 drives the upper clamping piece 10 to move downward.

In the present embodiment, the upper jaw 10, the lower jaw 20, the main body 30 and the driving lever are made of an insulating material. The insulating material can effectively prevent the worker from electric shock, and the safety of the worker is ensured.

The main body 30 is provided with a scale mark 301, the identification value of the scale mark 301 is the wire diameter of the conductor, and the wire diameter of the conductor is obtained by subtracting the thickness of the national standard conductor insulation layer from the diameter stroke measured by clamping the conductor by the upper clamping piece 10 and the lower clamping piece 20. The scale mark 301 can clearly show the actual line diameter size, and the measurement is more intuitive and accurate.

In the device, a worker can clamp a wire tightly through the device, and reads the section value of the wire through the scale mark 301 on the main body 30, when in operation, the worker drives the first rod body 401 upwards firstly to open a larger distance between the upper clamping piece 10 and the lower clamping piece 20, then the device is lifted to the position of the cable to be measured, so that the cable to be measured is placed in the gap between the upper clamping piece 10 and the lower clamping piece 20, then the sleeve body 50 is rotated to drive the first rod body 401 downwards, so that the first rod body 401 drives the upper clamping piece 10 to move towards the lower clamping piece 20, the upper clamping piece 10 and the lower clamping piece 20 jointly act to clamp the cable to be measured tightly, at the moment, the positions of the sleeve body 50 and the main body 30 are changed, the worker can read the section value of the wire at the moment through reading the position of the scale mark 301 corresponding to the upper end surface of the sleeve body 50, and the worker does not need to climb for measuring the section value of the wire, the working efficiency can be effectively improved, the labor intensity of workers can be reduced, the physical strength can be saved, and in addition, the test mode can also enable the measurement to be simpler and more visual. In particular, this device adopts the screw thread pair to drive first body of rod 401, and the interval between upper clamping piece 10 and the lower clamping piece 20 can be controlled accurately to this kind of drive mode of adjusting, and when loosening the regulation effort, also can not shift in the relative position between upper clamping piece 10 and the lower clamping piece 20, consequently has higher measurement accuracy.

Example 2:

as shown in fig. 1 and 2, the present embodiment is similar to embodiment 1, except that in the present embodiment, the thread pair includes a third thread portion 302 and a fourth thread portion 402, the third thread portion 302 is an internal thread disposed on the inner wall of the cavity, the fourth thread portion 402 is an external thread disposed on the outer wall of the first rod 401, and the third thread portion 302 and the fourth thread portion 402 are engaged with each other. Under the action of the third thread part 302 and the fourth thread part 402, the first rod 401 can be moved upwards or downwards by rotating the first rod 401, so as to drive the upper clip 10 to move.

Example 3:

as shown in fig. 5, this embodiment is similar to embodiment 1 or 2, except that in this embodiment, the driving rod includes a second rod 601, a nut 602 is connected to the outer side of the main body 30, the second rod 601 is a threaded rod, the threaded rod is engaged with the nut 602, an indication block 603 is disposed on the threaded rod, and the end of the threaded rod is connected to the upper clip 10. Under the action of the third thread part 302 and the fourth thread part 402, the first rod 401 can be moved upwards or downwards by rotating the first rod 401, so as to drive the upper clip 10 to move.

Furthermore, the device also comprises a rotating handle 604, and the rotating handle 604 is connected with the end part of the second rod body 601. The holding area can be increased by rotating the handle 604, so that the second rod 601 can be conveniently rotated by a worker.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a low pressure wire cross-section measuring apparatu, its characterized in that includes clamping piece (10), lower clamping piece (20), main part (30) and actuating lever, actuating lever and last clamping piece (10) be connected, lower clamping piece (20) be connected with main part (30), main part (30) on be equipped with scale mark (301), its characterized in that, the actuating lever pass through vice and main part (30) swing joint of screw thread.

2. The low-voltage wire section measuring instrument as claimed in claim 1, wherein the main body (30) is provided with a cavity, the driving rod is movably disposed in the cavity, the driving rod comprises a first rod (401) and a sleeve body (50), the first rod (401) is movably disposed in the cavity, one end of the first rod (401) is connected to the upper clamping piece (10), the other end of the first rod is connected to the sleeve body (50), and the sleeve body (50) is movably sleeved on the main body (30).

3. The low-voltage wire section measuring instrument as claimed in claim 2, wherein openings communicating with the cavity are respectively formed at both ends of the main body (30), the upper end of the first rod body (401) penetrates through the opening at the upper end of the main body (30) and is connected with the upper clamping piece (10), and the lower end of the first rod body (401) penetrates through the opening at the lower end of the main body (30) and is connected with the sleeve body (50).

4. A low voltage wire section measuring instrument according to claim 3, wherein the thread pair comprises a first thread portion (501) and a second thread portion (303), the first thread portion (501) is an internal thread provided on the inner wall of the sheath (50), the second thread portion (303) is an external thread provided on the outer wall of the main body (30), and the first thread portion (501) and the second thread portion (303) are engaged with each other.

5. A low voltage wire cross-section gauge according to claim 3, wherein the thread pair comprises a third thread portion (302) and a fourth thread portion (402), the third thread portion (302) is an internal thread provided on the inner wall of the cavity, the fourth thread portion (402) is an external thread provided on the outer wall of the first rod (401), and the third thread portion (302) and the fourth thread portion (402) are engaged with each other.

6. The low-voltage wire section measuring instrument as claimed in claim 1, wherein the driving rod comprises a second rod body (601), a nut (602) is connected to the outer side of the main body (30), the second rod body (601) is a threaded rod, the threaded rod is matched with the nut (602), an indicating block (603) is arranged on the threaded rod, and the end of the threaded rod is connected with the upper clamping piece (10).

7. A low voltage wire cross-section gauge according to claim 6, further comprising a rotating handle (604), wherein said rotating handle (604) is connected to the end of the second rod (601).

8. A low voltage wire section measuring instrument according to any one of claims 1 to 7, wherein the upper jaw (10) has a recess (101), the recess (101) has a circumferential groove (102), the outer wall of the end of the driving rod has a projection, the projection is engaged in the groove (102), and the projection slides in the groove (102).

9. The low voltage wire section gauge according to claim 8, wherein the upper jaw (10), the lower jaw (20), the main body (30) and the driving rod are made of insulating material.

10. The low-voltage wire section measuring instrument as claimed in claim 1, wherein the marking value of the scale mark (301) is the wire diameter of the wire conductor, and the wire diameter of the conductor is obtained by converting the diameter stroke measured by clamping the wire by the upper clamping piece (10) and the lower clamping piece (20) and subtracting the national standard wire insulation layer thickness.