CN111595224A - A low-voltage wire cross-section measuring instrument - Google Patents

Abstract

The invention relates to the technical field of measuring devices, and more particularly, to a low-voltage wire cross-section measuring instrument, comprising an upper clip, a lower clip, a main body and a driving rod, wherein the driving rod is connected with the upper clip, and the lower The clip is connected with the main body, the main body is provided with a scale mark, and the driving rod is movably connected with the main body through a threaded pair. Wire measurements can be made accurately and efficiently.

Description

A low-voltage wire cross-section measuring instrument

technical field

The invention relates to the technical field of measuring devices, and more particularly, to a low-voltage wire cross-section measuring instrument.

Background technique

In the process of acceptance and verification of distribution network infrastructure projects, it is often necessary to identify and confirm low-voltage wires of various wire diameters, but there are the following difficulties:

1. There are many specifications of low-voltage wires currently in operation, the signs of sun and rain are blurred, and some specifications are not very different, and cannot be distinguished by naked eyes.

2. Most of the low-voltage wires are erected at a height of about 3 meters. If you want to identify the wire diameter, you need to use a ladder to measure the distance, which is dangerous and inefficient.

Since there is no convenient and effective measurement tool, it is easy to judge the type of overhead wire erected along the pole by the naked eye. When facing the wire erected on the pole, the observer is affected by objective factors such as height, angle and light perception, as well as subjective factors such as experience and responsibility. The visual error brought by the impact affects the design accuracy and planning depth, and brings a series of subsequent problems, audit risks and other adverse effects.

At the same time, as a power company, power grid construction and operation and maintenance are two core businesses. Power supply stations and project participating units often have to deal with low-voltage overhead conductors in the process of project establishment, drawing design, engineering acceptance and operation and repair. As far as the low-voltage overhead conductor itself is concerned, the most important thing is the confirmation of the type. At present, the management requirements of distribution network projects, overhaul technical transformation and emergency repair projects are becoming more and more refined, and the implementation of standards in place must be more standardized and rigorous. Faced with the overhead conductors that are often dealt with in the core business, there is currently no type measurement tool for type measurement or a more direct and effective way to determine the type.

Publication number: CN210014731U, discloses an overhead wire type measuring tool, including an inner member and an outer member, the outer member is slidably sleeved on the inner member, the outer member is connected with an outer measurement arm, the inner member is connected with an inner measurement arm, and the outer There is an indicator plate on the component, and the inner component is connected with an indicator piece that cooperates with the indicator plate. The device drives the component by sliding, and the relative position of the component needs to be fixed by the limiter, so the measurement accuracy is low, and The components are easily displaced and difficult to measure accurately.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a low-voltage wire cross-section measuring instrument, which can measure the wire accurately and efficiently.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is: a low-voltage wire cross-section measuring instrument, comprising an upper clip, a lower clip, a main body and a driving rod, the driving rod is connected with the upper clip, and the The lower clip is connected with the main body, the main body is provided with a scale mark, and the driving rod is movably connected with the main body through a threaded pair.

In this device, the staff can clamp the wire through the device, and read the cross-sectional value of the wire through the scale on the main body. When operating, the staff first drives the driving rod upwards, so that the upper clamp and the lower clamp Open a large distance between the clips, and then lift the device to the position of the cable to be tested, so that the cable to be tested is placed in the gap between the upper clip and the lower clip, and then drive the drive downward. rod, so that the driving rod drives the upper clip to move in the direction of the lower clip, and the upper clip and the lower clip work together to clamp the cable to be tested. At this time, the position of the driving rod and the main body changes. The cross-sectional value of the wire can be read by taking the position of the drive rod on the scale mark. Through this device, the staff does not need to climb multiple times to measure the cross-sectional value of the wire, which can effectively improve the work efficiency and reduce the labor intensity of the staff. Save physical strength, in addition, this test method can also make the measurement easier and more intuitive. In particular, the device uses a threaded pair to drive the driving rod, and this driving adjustment method can precisely control the distance between the upper clamping piece and the lower clamping piece, and when the adjustment force is loosened, the upper clamping piece and the The relative position between the lower jaws will not shift, so it has high measurement accuracy.

Further, the main body is provided with a cavity, the driving rod is movably arranged in the cavity, the driving rod includes a first rod body and a sleeve body, and the first rod body is movably arranged in the cavity, so One end of the first rod body is connected with the upper clip, and the other end is connected with the sleeve body, and the sleeve body is movably sleeved on the main body. When the staff controls the action of the upper clip, by controlling the movement of the sleeve body, the first rod body is driven to move, so as to drive the action of the upper clip.

Further, the two ends of the main body are respectively provided with openings communicating with the cavity, the upper end of the first rod body penetrates from the upper end opening of the main body and is connected with the upper clip, and the lower end of the first rod body opens from the lower end of the main body. Pass out and connect with the sleeve body. The sleeve body is located at the lower end of the main body, and the action of the sleeve body is controlled to drive the movement of the first rod body, thereby driving the action of the upper clip located at the upper end of the main body. The upper clip can be controlled by the sleeve under the main body, so that the staff can measure the wire without climbing multiple times, saving physical strength.

Further, the threaded pair includes a first threaded portion and a second threaded portion, the first threaded portion is an inner thread arranged on the inner wall of the sleeve, and the second threaded portion is an outer thread arranged on the outer wall of the main body The first thread part and the second thread part cooperate with each other. When the staff controls the opening and closing of the upper clip and the lower clip, by twisting the sleeve body at the lower end of the main body, under the pushing action of the thread, the first rod body is extended upward or retracted downward, so as to realize the upper clip. Adjustment of the distance between the clip and the lower clip, in addition, since the first threaded part and the second threaded part cooperate with each other, when the upper clip and the lower clip work together to clamp the wire, even if the staff removes the sleeve body The upper and lower clips will not be displaced due to the action of gravity, so the relative position between the upper and lower clips can be well maintained, which is convenient for subsequent reading and can be accurately read Wire parameters.

Further, the threaded pair includes a third threaded portion and a fourth threaded portion, the third threaded portion is an inner thread arranged on the inner wall of the cavity, and the fourth threaded portion is arranged on the outer wall of the first rod The external thread, the third thread part and the fourth thread part cooperate with each other. Because under the action of the third threaded portion and the fourth threaded portion, the first rod body can be moved upward or downward by rotating the first rod body, so as to drive the action of the upper clip.

Further, the drive rod includes a second rod body, a nut is connected to the outer side of the main body, the second rod body is a threaded rod, the threaded rod is matched with the nut, and the threaded rod is provided with an indicator. The end of the threaded rod is connected with the upper clip. Because under the action of the third threaded portion and the fourth threaded portion, the first rod body can be moved upward or downward by rotating the first rod body, so as to drive the action of the upper clip.

Further, a turning handle is also included, and the turning handle is connected with the end of the second rod body. By turning the handle, the holding area can be enlarged, which is convenient for the staff to turn the second rod body.

Further, the upper clip is provided with a concave hole, the concave hole is provided with a ring groove along the circumferential direction, the outer wall of the end of the driving rod is provided with a convex block along the circumferential direction, and the convex block is inserted into the groove. In the annular groove, the projections slide in the annular groove. When the driving rod moves upward, the driving rod pushes the upper clip upward. When the driving rod moves downward, due to the action of the bump, the driving rod and the upper clip will not be separated, so that the driving rod drives the upper clip. The upper clip moves downward.

Further, the upper clip, the lower clip, the main body and the driving rod are all made of insulating materials. The use of insulating materials can effectively prevent the staff from electric shock and ensure the safety of the staff.

Further, the identification value of the scale mark is the wire diameter of the wire conductor, and the wire diameter of the conductor is measured by the diameter stroke measured by the upper clip and the lower clip clamping the wire and then subtracts the thickness of the insulation layer of the national standard wire Converted. This scale can clearly show the actual wire diameter, and the measurement is more intuitive and accurate.

Compared with the prior art, the beneficial effects of the present invention are: the device does not require staff to climb multiple times to measure the wire, and by converting the scale scale into the wire diameter value of the actual wire inner core, the wire diameter measurement of the wire can be simplified. It is intuitive and effectively improves the efficiency of wire diameter confirmation, and the device adopts the method of screw pair driving, which can ensure that the upper and lower clamping pieces will not be easily displaced, so that the measurement accuracy is higher.

Description of drawings

1 is a schematic diagram of the overall structure of the present invention in one embodiment;

Fig. 2 is the internal structure schematic diagram in embodiment 2 of the present invention;

Fig. 3 is a partial enlarged view at A in Fig. 2;

4 is a schematic diagram of the internal structure of the present invention in Embodiment 1;

FIG. 5 is a schematic diagram of the internal structure in Embodiment 3 of the present invention.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. Among them, the accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical drawings, and should not be construed as restrictions on this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings will be omitted, The enlargement or reduction does not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

The same or similar numbers 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 are terms “upper”, “lower”, “left” and “right” The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, with a specific orientation. Orientation structure and operation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on the present patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

Example 1:

As shown in FIG. 4 , a low-voltage wire cross-section measuring instrument includes an upper clip 10 , a lower clip 20 , a main body 30 and a driving rod, wherein, in this embodiment, the main body 30 is a cylindrical structure, and inside the main body 30 A cavity is provided, two ends of the main body 30 are provided with openings communicating with the cavity, and the lower clip 20 is fixedly connected to the outer wall of the upper end of the main body 30 . The driving rod includes 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 protrudes from the upper opening of the main body 30 and is connected to the upper clip 10. The lower end of the first rod body 401 extends from the main body. The opening of the lower end of 30 protrudes out 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 .

Wherein, in this embodiment, the driving rod is movably connected to the main body 30 through a threaded pair. Specifically, the threaded pair includes a first threaded portion 501 and a second threaded portion 303 , and the first threaded portion 501 is a thread provided on the inner wall of the sleeve body 50 Internal thread, 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 cooperate with each other. When the staff controls the opening and closing of the upper clip 10 and the lower clip 20, by twisting the sleeve body 50 at the lower end of the main body 30, under the pushing action of the thread, the first rod body 401 is extended upward or retracted downward. , so as to realize the adjustment of the distance between the upper clip 10 and the lower clip 20. In addition, since the first threaded portion 501 and the second threaded portion 303 cooperate with each other, the upper clip 10 and the lower clip 20 work together to clamp When the guide wire is used, even if the staff removes the force on the sleeve body 50, the upper clip 10 and the lower clip 20 will not be displaced due to the action of gravity, so the upper clip 10 and the lower clip can be well maintained. The relative position between 20 is convenient for subsequent readings, and the wire parameters can be accurately read.

In particular, as shown in FIG. 3 , the upper clip 10 is provided with a concave hole 101 , and the concave hole 101 is provided with a ring groove 102 along the circumferential direction, and the outer wall of the end of the first rod body 401 is provided with a convex block along the circumferential direction, and the convex block is arranged in the circumferential direction. into the ring groove 102 , and the protrusion slides in the ring groove 102 . When the first rod body 401 moves upward, the first rod body 401 pushes the upper clip 10 upward. When the first rod body 401 moves downward, the first rod body 401 and the upper clip 10 are formed between the first rod body 401 and the upper clip 10 due to the action of the bump. The first rod body 401 drives the upper clip 10 to move downward.

In this embodiment, the upper clip 10, the lower clip 20, the main body 30 and the driving rod are all made of insulating materials. The use of insulating materials can effectively prevent the staff from electric shock and ensure the safety of the staff.

A scale mark 301 is provided on the main body 30, and the identification value of the scale mark 301 is the wire diameter of the conductor of the wire. The thickness of the insulation layer of the national standard wire is converted. The scale mark 301 can clearly show the actual wire diameter, and the measurement is more intuitive and accurate.

In this device, the staff can clamp the wire through the device, and read the cross-sectional value of the wire through the scale mark 301 on the main body 30. During operation, the staff first drives the first rod body 401 upward, so that the upper clamp A large distance is opened between the clip 10 and the lower clip 20, and then the device is lifted to the position of the cable to be tested, so that the cable to be tested is placed in the gap between the upper clip 10 and the lower clip 20 Then, the sleeve body 50 is rotated to drive the first rod body 401 downward, so that the first rod body 401 drives the upper clip 10 to move in the direction of the lower clip 20, and the upper clip 10 and the lower clip 20 work together to connect the cable to be tested. At this time, the position of the sleeve body 50 and the main body 30 changes. The staff can read the cross-sectional value of the wire at this time by reading which position the upper end face of the sleeve body 50 corresponds to on the scale mark 301. The staff of the device does not need to climb multiple times to measure the cross-sectional value of the wire, which can effectively improve the work efficiency, reduce the labor intensity of the staff, and save physical strength. In addition, this test method can also make the measurement more simple and intuitive. In particular, the device uses a screw pair to drive the first rod body 401, and this driving adjustment method can precisely control the distance between the upper clamping piece 10 and the lower clamping piece 20, and when loosening the adjustment force, The relative position between the upper clip 10 and the lower clip 20 will not be displaced, so the measurement accuracy is high.

Example 2:

As shown in Figures 1 and 2, this embodiment is similar to Embodiment 1, the difference is that in this embodiment, the thread pair includes a third thread portion 302 and a fourth thread portion 402, and the third thread portion 302 is provided with In the inner thread of the inner wall of the cavity, the fourth thread portion 402 is an outer thread provided on the outer wall of the first rod body 401 , and the third thread portion 302 and the fourth thread portion 402 cooperate with each other. Because under the action of the third threaded portion 302 and the fourth threaded portion 402 , the first rod body 401 can be moved upward or downward by rotating the first rod body 401 to drive the action of the upper clip 10 .

Example 3:

As shown in FIG. 5 , this embodiment is similar to Embodiment 1 or 2, the difference is that, in this embodiment, the driving rod includes a second rod body 601 , a nut 602 is connected to the outside of the main body 30 , and the second rod body 601 is threaded Rod, the threaded rod is matched with the nut 602, the threaded rod is provided with an indicator block 603, and the end of the threaded rod is connected with the upper clip 10. Because under the action of the third threaded portion 302 and the fourth threaded portion 402 , the first rod body 401 can be moved upward or downward by rotating the first rod body 401 to drive the action of the upper clip 10 .

Further, a turning handle 604 is also included, and the turning handle 604 is connected with the end of the second rod body 601 . By turning the handle 604 , the holding area can be increased, which is convenient for the staff to turn the second rod body 601 .

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

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.

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