CN211452135U

CN211452135U - Measuring tool for opening distance and overtravel of vacuum circuit breaker

Info

Publication number: CN211452135U
Application number: CN201922357635.8U
Authority: CN
Inventors: 钱辉; 张锡水; 王建宾
Original assignee: Shenzhen Kry Electrical Equipment Co ltd
Current assignee: Shenzhen Kry Electrical Equipment Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-08
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a measuring tool of vacuum circuit breaker opening distance and overtravel belongs to vacuum circuit breaker opening distance and overtravel measurement technical field, including fixed plate, guiding hole and permanent magnet, the guiding hole that is bar column structure is seted up at the top middle part of fixed plate, and both ends are equipped with the permanent magnet about the vertical central line symmetry of guiding hole respectively about the fixed plate bottom, the inside left side of guiding hole is equipped with two connecting blocks about the horizontal central line symmetry of guiding hole and level setting, and is equipped with the slide bar of being connected, every with the fixed plate rotation on the terminal surface that two connecting blocks were carried on the back mutually respectively all be connected with the sleeve that is hollow column structure on the connecting block perpendicularly. The utility model discloses well setting up of clamping mode makes two carousels remove simultaneously under the drive of screw thread post to make insulating pull rod put when being fixed its central point put with the central point of guiding hole put on same vertical face, provide the condition with this to the measurement work of displacement stroke behind the insulating pull rod of volume of awaiting measuring.

Description

Measuring tool for opening distance and overtravel of vacuum circuit breaker

Technical Field

The utility model relates to a vacuum circuit breaker open distance and over travel measurement technical field, specificly relate to a measuring tool of vacuum circuit breaker open distance and over travel.

Background

Overtravel and opening distance are two very important parameters in the vacuum circuit breaker and are involved in actual operation work; the overtravel is also called overtravel, and means that after the moving contact and the fixed contact are contacted, the mechanism continues to overtravel to move beyond the position of the moving contact and the fixed contact; the opening distance means the distance between a moving contact and a fixed contact of the circuit breaker after disconnection;

make the guiding hole in the measurement locating plate and vacuum circuit breaker's insulating pull rod center centering through detachable calibration gauge block in the grant publication No. CN 207556397U to obtain the benchmark setpoint and guarantee follow-up measuring accuracy, nevertheless because it all need carry out the dismouting between calibration gauge block and the locating plate when measuring at every turn, thereby make operating procedure loaded down with trivial details, be not convenient for staff's use, so, urgent need develop a vacuum circuit breaker apart from and measuring tool of overrun.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

An object of the utility model is to provide a measuring tool of vacuum circuit breaker open distance and overtravel to solve the current instrument of using to vacuum circuit breaker open distance and overtravel measurement that proposes in the above-mentioned background art, all need carry out the dismouting between at every turn when measuring with calibration gauge block and locating plate, thereby make the operating procedure loaded down with trivial details, the staff's of not being convenient for problem of use.

2. Technical scheme

In order to solve the above problem, the utility model adopts the following technical scheme:

a measuring tool for the opening distance and the over travel of a vacuum circuit breaker comprises a fixed plate, guide holes and permanent magnets, wherein the middle of the top end of the fixed plate is provided with the guide holes in a strip-shaped structure, the left end and the right end of the bottom of the fixed plate are respectively provided with the permanent magnets which are symmetrical about the vertical central line of the guide holes, the left side inside of the guide holes is provided with two connecting blocks which are symmetrical about the horizontal central line of the guide holes and are horizontally arranged, the end surfaces of the two connecting blocks which are opposite to each other are respectively provided with a slide rod which is rotatably connected with the fixed plate, each connecting block is vertically connected with a sleeve in a hollow structure, the inside of each sleeve is respectively and slidably connected with an adjusting rod the top end of which extends to the outer side of the sleeve, one end of each adjusting rod which is embedded into the sleeve is provided, the cross bar is provided with an installation containing cavity perpendicular to the adjusting rod, the interior of the installation containing cavity is provided with a threaded column rotatably connected with the inner wall of the cross bar along the length direction of the cross bar, one side of the threaded column penetrates through one end of the installation containing cavity and extends to the outer side of the cross bar, the interior of the installation containing cavity is provided with two threaded plates which are symmetrical about the horizontal central line of the threaded column and are parallel to the threaded column, each threaded plate is in sliding connection with the installation containing cavity, threads meshed with the threads on the threaded column are arranged on the surfaces of one ends of the two threaded plates facing towards the threaded column, the threads on the two threaded plates are oppositely arranged, the surface of one end of each threaded plate opposite to the threaded column is vertically provided with connecting rods which are symmetrical about the horizontal central line of the threaded column and are in sliding connection with the installation containing cavity, and the free end of each connecting rod penetrates, the free ends of the two connecting rods are respectively provided with an extrusion plate which is symmetrical about the horizontal center line of the threaded column, the opposite end surfaces of the two extrusion plates are respectively provided with a rotary table which is parallel to the two extrusion plates, each rotary table is connected with the extrusion plate on the corresponding side through a connecting shaft, each connecting shaft is rotatably connected with the extrusion plates through bearings, the right side in the guide hole is provided with an installation block which is vertical to the fixed plate and is of a concave structure, the two ends of the installation block in the width direction of the guide hole are slidably connected with the fixed plate through first sliding grooves which are arranged on the two sides in the guide hole, the first sliding grooves are parallel to the fixed plate, the concave surface of the installation block is provided with a scale plate which penetrates through the upper end and the lower end of the installation block and is vertical to the fixed plate, the two ends of the concave surface of the installation block are respectively provided with a second sliding groove for the two ends, and a third sliding groove for the pointer to slide up and down is formed in the surface of one end, facing the turntable, of the scale plate.

Preferably, each adjusting rod is embedded into the side wall of one end inside the sleeve, at least two limiting blocks are arranged on the side wall, and at least two slideways for the limiting blocks on the corresponding side to slide are arranged inside each sleeve.

Preferably, the right end of the mounting block is provided with a threaded torsion bar which vertically penetrates through the mounting block and is in contact with the back surface of the scale plate, and one end of the threaded torsion bar, which is back to the mounting block, is provided with a torsion block.

Preferably, a shifting block is arranged on the surface of one end, back to the pointer, of the top end of the scale plate.

3. Advantageous effects

The utility model discloses a rotation in screw thread post positive direction drives and draws close each other rather than two thread plates of thread engagement to make two carousels press from both sides the free end of the insulating pull rod of placing between it and press from both sides tightly fixed, the setting up of this clamping mode makes two carousels remove simultaneously under the drive of screw thread post, thereby make insulating pull rod put when being fixed its central point put with the central point of guiding hole put on same vertical face, provide the condition with this to the measurement work of displacement stroke behind the insulating pull rod of volume of awaiting measuring.

The utility model discloses when measuring, through the sleeve and adjust the slip between the pole and rotate the cooperation of being connected between slide bar and the fixed plate, cooperate the rotation of insulating pull rod to this stability ability to insulating pull rod when the measurand has carried out the assurance.

The utility model discloses a gliding mutually supporting between installation piece and fixed plate and scale plate and the installation piece, adjust the level of scale plate and the position of vertical direction, the measurement work of insulating pull rod provides the condition when this is different states, and through the slip between pointer and the scale plate, the bottom face of the insulating pull rod stiff end when making the pointer to different states contacts, read with this distance between pointer and the fixed plate, should measure simple structure and be convenient for adjust, thereby made things convenient for the staff to its operation.

Drawings

Fig. 1 is a schematic front view of the internal structure of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a schematic view of the clamping structure.

Fig. 4 is an enlarged schematic view of a portion a in fig. 1.

Fig. 5 is an enlarged schematic view of B in fig. 2.

Reference numerals: 1-fixing plate, 2-guiding hole, 3-permanent magnet, 4-connecting block, 5-sliding rod, 6-sleeve, 7-adjusting rod, 8-spring, 9-limiting block, 10-cross rod, 11-mounting accommodating cavity, 12-threaded column, 13-threaded plate, 14-connecting rod, 15-extrusion plate, 16-rotary table, 17-connecting shaft, 18-bearing, 19-mounting block, 20-first sliding chute, 21-second sliding chute, 22-scale plate, 23-threaded torsion bar, 24-third sliding chute, 25-pointer and 26-shifting block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

As shown in fig. 1-5, a measuring tool for measuring the opening distance and the over travel of a vacuum circuit breaker comprises a fixing plate 1, a guide hole 2 and a permanent magnet 3, wherein the middle of the top end of the fixing plate 1 is provided with the guide hole 2 in a strip-shaped structure, the left end and the right end of the bottom of the fixing plate 1 are respectively provided with the permanent magnet 3 symmetrical about the vertical central line of the guide hole 2, the left side of the inside of the guide hole 2 is provided with two connecting blocks 4 symmetrical and horizontally arranged about the horizontal central line of the guide hole 2, the end surfaces of the two connecting blocks 4 opposite to each other are respectively provided with a slide bar 5 rotatably connected with the fixing plate 1, each connecting block 4 is vertically connected with a sleeve 6 in a hollow structure, the inside of each sleeve 6 is slidably connected with an adjusting rod 7, the top end of each adjusting rod 7 is extended to the outer side of the sleeve 6, and one end, the side wall of one end of each adjusting rod 7 embedded in the sleeve 6 is provided with at least two limiting blocks 9, the inner part of each sleeve 6 is provided with at least two slideways for the corresponding side limiting blocks 9 to slide, the adjusting rods 7 during stretching and retracting are limited by the sliding between the limiting blocks 9 and the slideways, so that the phenomena of dislocation and derailment of the adjusting rods 7 during sliding are prevented, the free ends of the two adjusting rods 7 are commonly and vertically connected with a cross rod 10, the cross rod 10 is provided with an installation containing cavity 11 vertical to the adjusting rods 7, the inside of the installation containing cavity 11 is provided with a threaded column 12 rotatably connected with the inner wall of the cross rod 10 along the length direction, one side of the threaded column 12 penetrates through one end of the installation containing cavity 11 and extends to the outer side of the cross rod 10, the inside of the installation containing cavity 11 is provided with two threaded plates 13 which are symmetrical about the horizontal central line of the threaded column 12, and each threaded plate 13 is slidably connected with the mounting cavity 11, threads engaged with the threads on the threaded column 12 are arranged on the surfaces of one ends of the two threaded plates 13 facing the threaded column 12, and the threads on the two thread plates 13 are arranged oppositely, the surface of one end of each thread plate 13, which is back to the thread column 12, is vertically provided with connecting rods 14 which are symmetrical about the horizontal central line of the thread column 12 and are connected with the mounting accommodating cavity 11 in a sliding way, the free end of each connecting rod 14 passes through the other end of the mounting cavity 11 and extends to the outer side of the cross rod 10, the free ends of the two connecting rods 14 are respectively provided with a squeezing plate 15 which is symmetrical about the horizontal central line of the threaded column 12, the opposite end surfaces of the two squeezing plates 15 are respectively provided with a rotating disc 16 which is parallel to the squeezing plates, each rotary table 16 is connected with the extrusion plate 15 on the corresponding side through a connecting shaft 17, and each connecting shaft 17 is rotatably connected with the extrusion plate 15 through a bearing 18;

an installation block 19 which is vertical to the fixed plate 1 and is in a concave structure is arranged on the right side in the guide hole 2, two ends of the installation block 19, which are positioned in the width direction of the guide hole 2, are in sliding connection with the fixed plate 1 through first sliding grooves 20 which are formed in two sides in the guide hole 2, the first sliding grooves 20 are parallel to the fixed plate 1, scale plates 22 which penetrate through the upper end and the lower end of the installation block 19 and are vertical to the fixed plate 1 are arranged at the concave surfaces of the installation block 19, second sliding grooves 21 for sliding two ends of the scale plates 22 are respectively formed at two ends of the concave surfaces of the installation block 19, a pointer 25 which is vertical to the scale plate 22 is arranged at one end of the scale plate 22 facing the turntable 16, and a third sliding groove 24 for sliding the pointer 25 up and down;

the right-hand member of installation piece 19 is equipped with and runs through its and with scale plate 22 back contact's screw torsion bar 23 perpendicularly, and screw torsion bar 23 is equipped with the piece of turning round in the one end of installation piece 19 dorsad, rotation through screw torsion bar 23, adjust the inseparable degree of laminating between it and the scale plate 22, scale plate 22 after removing with this fixes, thereby made things convenient for the staff to the reading of pointer data on it, avoid scale plate 22 to produce when the reading and remove and cause the influence to the authenticity of reading data, the one end surface of scale plate 22 top dorsad pointer 25 is equipped with shifting block 26, make things convenient for the regulation of staff to scale plate 22 upper and lower position through shifting block 26, thereby the measurement of insulating pull rod displacement on this vacuum circuit breaker facilitates.

The specific application process of the measuring tool for the opening distance and the overtravel of the vacuum circuit breaker comprises the following steps: when the vacuum circuit breaker insulation pull rod fixing device is used, firstly, an insulation pull rod on the vacuum circuit breaker is placed in a guide hole 2, then, two threaded plates 13 which are in threaded engagement with the insulation pull rod are driven to mutually approach by the positive rotation of a threaded column 12, so that two extrusion plates 15 approach under the driving of a connecting rod 14, then, two turntables 16 clamp and fix the free end of the insulation pull rod placed in the guide hole 2, the central position of the insulation pull rod is determined, and then, a fixing plate 1 is fixed on the vacuum circuit breaker through a permanent magnet 3;

after the fixing is finished, the insulating pull rod is shifted to different positions according to the measurement requirement, when the insulating pull rod is not shifted to a position to be measured, the horizontal and vertical positions of the scale plate 22 are adjusted through the sliding mutual matching between the mounting block 19 and the fixed plate 1 and between the scale plate 22 and the mounting block 19, then, the pointer 25 contacts the bottom end face of the fixed end of the insulating pull rod in different states through the sliding between the pointer 25 and the scale plate 22, the vertical distance between the pointer 25 and the top surface of the fixed plate 1 in this state is read by the scale plate 22, by reading the vertical distance between the bottom end of the fixed end of the insulating pull rod and the surface of the top end of the fixed plate 1 in different states, the open distance and the overtravel of the vacuum circuit breaker are indirectly measured, so that the use process of the measuring tool for the open distance and the overtravel of the vacuum circuit breaker is completed.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. A measuring tool for the opening distance and the over travel of a vacuum circuit breaker comprises a fixed plate (1), guide holes (2) and permanent magnets (3), wherein the guide holes (2) in a strip-shaped structure are formed in the middle of the top end of the fixed plate (1), the permanent magnets (3) which are symmetrical about the vertical central line of the guide holes (2) are respectively arranged at the left end and the right end of the bottom of the fixed plate (1), the measuring tool is characterized in that two connecting blocks (4) which are symmetrical about the horizontal central line of the guide holes (2) and are horizontally arranged are arranged on the left side of the inside of the guide holes (2), slide rods (5) which are rotatably connected with the fixed plate (1) are respectively arranged on the end faces of the two connecting blocks (4) which are opposite to each other, sleeves (6) in a hollow structure are vertically connected on each connecting block (4), and adjusting rods (7) with the top ends extending to the outer, and every regulation pole (7) are embedded in the inside one end of sleeve (6) and all are equipped with spring (8) of the other end and corresponding side connecting block (4) fixed connection, two the free end of adjusting pole (7) is connected with horizontal pole (10) perpendicularly jointly, seted up on horizontal pole (10) and adjust pole (7) vertically installation appearance chamber (11), and the inside of installation appearance chamber (11) is equipped with along its length direction and rotates threaded post (12) of being connected with horizontal pole (10) inner wall, one side of threaded post (12) is passed the one end of installation appearance chamber (11) and is extended to the outside of horizontal pole (10), the inside of installation appearance chamber (11) is equipped with two thread plates (13) that are symmetrical about threaded post (12) horizontal center line and are parallel with threaded post (12), and every thread plate (13) all with installation appearance chamber (11) sliding connection, two thread plate (13) are equipped with and go up threaded engagement on threaded post (12) towards the one end surface of threaded post (12) The thread combination is realized, the threads on the two thread plates (13) are arranged oppositely, one end surface of each thread plate (13) back to the thread column (12) is vertically provided with connecting rods (14) which are symmetrical about the horizontal central line of the thread column (12) and are in sliding connection with the installation containing cavity (11), the free end of each connecting rod (14) penetrates through the other end of the installation containing cavity (11) and extends to the outer side of the cross rod (10), the free ends of the two connecting rods (14) are respectively provided with extrusion plates (15) which are symmetrical about the horizontal central line of the thread column (12), the opposite end surfaces of the two extrusion plates (15) are respectively provided with a turntable (16) which is parallel to the extrusion plates, each turntable (16) is connected with the extrusion plate (15) on the corresponding side through a connecting shaft (17), and each connecting shaft (17) is rotatably connected with the extrusion plates (15) through a bearing (18), the right side in the guide hole (2) is provided with a mounting block (19) which is vertical to the fixing plate (1) and is in a concave structure, and the two ends of the mounting block (19) positioned in the width direction of the guide hole (2) are connected with the fixing plate (1) in a sliding way through first sliding chutes (20) arranged on the two sides in the guide hole (2), the first sliding chute (20) is parallel to the fixed plate (1), the concave surface of the mounting block (19) is provided with a scale plate (22) which penetrates through the upper end and the lower end of the mounting block and is vertical to the fixed plate (1), and two ends of the concave surface of the mounting block (19) are respectively provided with a second sliding chute (21) for sliding two ends of the scale plate (22), one end of the scale plate (22) facing the turntable (16) is provided with a pointer (25) vertical to the scale plate, and a third sliding groove (24) for the pointer (25) to slide up and down is arranged on the surface of one end of the scale plate (22) facing the turntable (16).

2. The tool for measuring the opening distance and the over travel of the vacuum circuit breaker according to claim 1, wherein the number of the limiting blocks (9) is at least two and the number of the sliding ways for the limiting blocks (9) is at least two and are arranged in each sleeve (6) and the adjusting rods (7) are embedded in the side wall of one end of the inner part of each sleeve (6).

3. The tool for measuring the opening and the overtravel of the vacuum circuit breaker according to claim 1, wherein the right end of the mounting block (19) is provided with a threaded torsion bar (23) vertically penetrating through the right end and contacting with the back surface of the scale plate (22), and one end of the threaded torsion bar (23) opposite to the mounting block (19) is provided with a torsion block.

4. The tool for measuring the opening and the overtravel of the vacuum circuit breaker according to claim 1, wherein the surface of the end of the scale plate (22) facing away from the pointer (25) is provided with a shifting block (26).