CN219245184U - Cable thermal extension measuring device - Google Patents

Abstract

The utility model relates to a cable thermal extension measuring device, which comprises a test box and an auxiliary reading device matched with the test box for use, wherein the test box comprises a box body and a box door rotatably connected to the front side of the box body, and an observation window is arranged on the box door; the auxiliary reading device is arranged corresponding to the observation window and comprises an upper rail, a lower rail, an upper supporting rod, a lower supporting rod, a movable frame, a camera and a positioning laser lamp, wherein the upper rail and the lower rail are arranged on the box body and are respectively positioned on the upper side and the lower side of the observation window; according to the utility model, the camera and the positioning laser lamp are used for assisting a worker in determining the position of the mark line, and specific readings can be obtained according to the picture shot by the camera, so that accurate readings can be conveniently obtained; staff does not need to lie prone on the observation window to read, and labor intensity is reduced.

Description

Cable thermal extension measuring device

Technical Field

The utility model belongs to the technical field of cable thermal extension, and particularly relates to a cable thermal extension measuring device.

Background

Thermal elongation is the elongation of the plastic after heating (under tension), and mainly considers the degree of crosslinking of polyethylene, the higher the degree of crosslinking, the smaller the thermal elongation. The thermal extension test is an important index for checking the mechanical and physical properties of the cable insulation layer. The traditional thermal extension measurement means is to put a sample and a graduated scale (staff gauge) in a thermal aging test box, load is placed on one end of the sample, the sample is stretched, a detector reads the reading with naked eyes through a glass observation window, but reading errors can be generated due to the fact that the distance is far or the visual angle of the graduated scale and the naked eyes is different, and accuracy of measurement data is affected.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a cable thermal extension measuring device.

The technical scheme of the utility model is as follows:

the cable thermal extension measuring device comprises a test box and an auxiliary reading device matched with the test box for use, wherein the test box comprises a box body and a box door rotatably connected to the front side of the box body, and an observation window is arranged on the box door;

the auxiliary reading device is arranged corresponding to the observation window and comprises an upper rail, a lower rail, an upper supporting rod, a lower supporting rod, a movable frame, a camera and a positioning laser lamp, wherein the upper rail and the lower rail are arranged on the box body and are respectively positioned on the upper side and the lower side of the observation window; the lens of the camera and the center of the positioning laser lamp are on the same horizontal line;

the upper rail and the lower rail limit the movable range of the movable frame in a fixed plane, so that the horizontal distance between the camera lens and the standard ruler in the test box is inconvenient to keep, and clear scales can be conveniently shot by the camera.

Furthermore, the camera lens is located in the center of the movable frame, the positioning laser lamp is arranged on the left side or the right side of the camera through the lamp mounting base, the positioning laser lamp is mounted after the camera is mounted, and the camera is limited in the movable frame by the positioning laser lamp. Further, the positioning laser lamp is a word line laser or a cross line laser, irradiates a lamp line with a horizontal line, and is convenient for a worker to align marks on the sample and scales on the graduated scale conveniently and rapidly.

Further, the upper rail and the lower rail are respectively provided with a sliding rail groove which is vertically communicated, and the front and rear inner walls of the sliding rail groove are vertical surfaces; the upper support rod and the lower support rod are linear polished rods on the front side and the rear side of the cross section, so that the upper support rod and the lower support rod can freely slide up and down and left and right in the sliding rail groove.

Further, the movable frame is a U-shaped frame with an opening at the left side or the right side, and comprises an upper support plate, a middle vertical plate and a lower support plate which are sequentially connected; the lower side wall of the camera is provided with a clamping groove which is communicated left and right and corresponds to the width of the lower support plate.

Further, in order to prevent the camera and the lamp wire from being askew, a correction mechanism is arranged on the upper bracket and comprises a positioning chute which is vertically arranged on the upper supporting rod and is T-shaped in cross section, a positioning block matched with the positioning chute and a positioning sheet connected to the positioning block, wherein the positioning sheet has a certain thickness and a positioning hole, and the upper supporting rod is penetrated in the positioning hole.

Further, the locating piece and the locating piece are integrally formed, in order to facilitate installation of the locating piece and the locating piece, the locating sliding groove upwards penetrates through the upper supporting rod, a top cap is detachably arranged at the top end of the upper supporting rod, and the top cap is used for sealing an upper port of the locating sliding groove.

Further, the both ends of going up track and lower track all are provided with the mounting rail hole, the correspondence is provided with the erection column on the chamber door, the front end of erection column sets up the screw thread section, overlaps the mounting hole behind the erection column, on the erection column screw bolt can install track and lower track on the chamber door.

Further, a control panel is arranged on the right side of the box body, a temperature controller, a timer, an overtemperature alarm lamp, a heating button, a timing button, a total power supply and a time accumulator are arranged on the control panel, and the operation of the test box is directly carried out on the control panel without being additionally connected with a computer for control; the refrigerator door is provided with a screen support, a display screen is detachably arranged on the screen support, the display screen is connected with a camera through a cable, and the detachable display screen is convenient to take down and use in other places when not used.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the camera and the positioning laser lamp are used for assisting a worker in determining the position of the mark line, the specific reading can be obtained according to the picture shot by the camera only by aligning the lamp line of the positioning laser lamp with the position of the mark line on the sample and shooting, the worker does not need to lie prone on an observation window for reading, and the labor intensity is reduced;

the mark line on the sample is aligned with the camera through the positioning laser lamp, so that the visual angle of the camera is horizontal to the mark line, errors caused by uneven visual angle are avoided, and accurate readings are conveniently obtained;

the movable range of the camera is limited in a vertical plane, repeated focusing of the camera can be avoided, the time required for photographing is saved, and clear photos are also convenient to obtain.

Drawings

FIG. 1 is a schematic diagram of a front view structure of an embodiment of the present utility model;

FIG. 2 is a diagram showing the usage of the auxiliary reading device according to the embodiment of the utility model;

fig. 3 is a schematic structural diagram of an auxiliary reading device according to an embodiment of the utility model.

In the figure, a top cap-1, an upper supporting rod-2, a positioning sheet-3, an upper rail-4, a movable frame-5, a clamping groove-6, a camera-7, a positioning laser lamp-8, an installation lamp holder-9, a lower rail-10, a lower supporting rod-11, a positioning chute-12, a positioning block-13, a sliding rail groove-14, an installation rail hole-15, an observation window-16, a box door-17, a box body-18, a control panel-19 and a screen bracket-20.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, the cable thermal extension measuring device comprises a test box and an auxiliary reading device matched with the test box, wherein the test box comprises a box body 18, a box door 17 rotatably connected to the front side of the box body 18, and a test cavity arranged in the box body 18, a heating device and a test support are arranged in the test cavity, a clamp holder assembly and a graduated scale for lifting a sample are arranged on the test support, graduated marks and digital marks corresponding to the graduated marks are arranged on the graduated scale, and an observation window 16 is arranged on the box door 17; outside the test box, the transparent observation window 16 is used for observing the readable reading of the scale mark on the corresponding scale mark on the sample to obtain a test result; to facilitate photographing, a lamp is provided inside the viewing window 16 to illuminate the test cavity to provide illumination;

the auxiliary reading device is arranged corresponding to the observation window 16 and is used for acquiring the position of the mark line corresponding to the graduated scale through photographing by the camera 7 after aligning the mark line by positioning the laser lamp 8, and staff does not need to take effort to read through the observation window 16 according to the photographed photo reading;

the auxiliary reading device comprises an upper rail 4 and a lower rail 10 which are arranged on a box 18 and are respectively positioned on the upper side and the lower side of an observation window 16, an upper supporting rod 2 sliding in the upper rail 4, a lower supporting rod 11 sliding in the lower rail 10, a movable frame 5, a camera 7 and a positioning laser lamp 8 which are arranged on the movable frame 5, wherein the movable frame 5 is in a frame shape, the lower end of the upper supporting rod 2 is vertically connected with the upper side surface of the movable frame 5, and the upper end of the lower supporting rod 11 is vertically connected with the lower side surface of the movable frame 5; the lens of the camera 7 and the center of the positioning laser lamp 8 are on a horizontal line; the camera 7 photographs through a photographing key, which can be a sound control photographing, wherein the photographing key is an entity key on the camera 7 or a control end in communication connection with the camera 7, such as a virtual key on a touch screen connected with the camera 7;

the upper track 4 and the lower track 10 limit the movable range of the movable frame 5 in a fixed plane, and the camera 7 can move in the plane to enable the lens of the camera 7 to clearly see the scale of the scale in the test box, so that the lens with fixed focal length and meeting the requirements can be directly adopted, repeated focusing of the lens in the measuring process is not needed, and clear numerical images can be conveniently obtained;

for the case that the test box can only test one sample at a time, the lengths of the upper rail 4 and the lower rail 10 can be reduced, and only the movable frame 5 can slide in the up-down direction; in the case of performing a plurality of sample tests at a time, the length of the slide rail groove 14 covering the width of the observation window 16 may be set, and the lengths of the upper and lower support rods 2 and 11 are appropriate, so that the movable frame 5 can be moved up and down and left and right, and the camera 7 can reach each corner of the observation window 16.

Further, as shown in fig. 1 to 3, the lens of the camera 7 is located at the center of the movable frame 5, and the positioning laser lamp 8 is disposed on the left side or the right side of the camera 7 through the mounting base 9; the mounting base 9 comprises an L-shaped mounting base and a mounting part arranged at the top of the L-shaped mounting base, the mounting part is similar to a clamp for clamping the positioning laser lamp 8 or is provided with an internal threaded hole so that the positioning laser lamp 8 with external threads can be mounted on the mounting base through threads, and the bottom of the L-shaped mounting base is provided with a mounting hole which can be mounted on the movable frame 5 through bolts; after the camera 7 is installed, a positioning laser lamp 8 is installed, and the camera 7 is limited in the movable frame 5 by the positioning laser lamp 8; preferably, the side of the camera 7 facing the observation window 16 is coplanar with the side of the positioning laser lamp 8 facing the observation window 16, or the positioning laser lamp 8 is slightly forward relative to the camera 7, so as to facilitate the determination of the installation position of the positioning laser lamp 8 and prevent the light-emitting end of the positioning laser lamp 8 from touching the observation window 16 after installation.

Further, as shown in fig. 1 to 3, the positioning laser 8 is a word line laser or a cross line laser, irradiates a lamp line with a horizontal line, and the horizontal lamp line is aligned with a mark line on the sample, and then the camera 7 photographs and records, so that the positioning laser 8 is convenient for a worker to align the mark line with the scale on the scale conveniently and rapidly, and is also convenient for reading according to the lamp line;

when the device is used, the position of the movable frame 5 is manually adjusted, a lamp wire is aligned with a mark wire on a cable skin sample, then a camera 7 is used for photographing, then a photo is checked on equipment connected with the camera 7 to conduct manual reading or software automatic reading, a numerical value on a steel ruler is obtained, and then the elongation rate of the sample is calculated.

Further, as shown in fig. 3, the upper rail 4 and the lower rail 10 are respectively provided with a vertically penetrating slide rail groove 14, and the front and rear inner walls of the slide rail groove 14 are vertical surfaces; the upper support rod 2 and the lower support rod 11 are polished rods with straight lines on the front side and the rear side of the cross section, so that the upper support rod 2 and the lower support rod 11 can freely slide up and down and left and right in the slide rail groove 14; the contact surfaces between the upper support rod 2, the lower support rod 11 and the sliding rail groove 14 have certain friction force, and the sliding rail groove cannot move in a short time when no staff pushes the pulling frame 5, so that the camera 7 is prevented from shaking during photographing; of course, if the contact surfaces between the upper support rod 2 and the lower support rod 11 and the slide rail groove 14 are smooth, the friction force is small, photographing can be performed, and only the worker holds the frame 5 to fix the position, so that a plurality of photographing can be performed, and the photographing is preferable.

Further, as shown in fig. 1 to 3, the movable frame 5 is a U-shaped frame with an opening on the left side or the right side, and the movable frame 5 includes an upper support plate, a middle vertical plate and a lower support plate which are sequentially connected; the camera 7 is provided with a clamping groove 6 which is penetrated left and right and corresponds to the width of the lower support plate on the lower side wall. Or the upper side wall of the camera 7 is provided with a clamping groove 6 which is penetrated left and right and corresponds to the width of the upper support plate, so that the camera 7 can enter the movable frame 5 from the side for installation. And pushes the other side of the camera 7 to abut against the middle vertical plate of the movable frame 5, the camera 7 is mounted on the movable frame 5, and the mounted camera 7 cannot be displaced back and forth.

Further, as shown in fig. 1 to 3, in order to prevent the camera 7 and the lamp wire from being askew, a correction mechanism is provided on the upper bracket, the correction mechanism includes a positioning chute 12 which is vertically arranged on the upper support rod 2 and has a T-shaped cross section, a positioning block 13 which is matched with the positioning chute 12, and a positioning sheet 3 which is connected to the positioning block 13, the positioning sheet 3 has a certain thickness and has a positioning hole, the upper support rod 2 is arranged in the positioning hole in a penetrating way, the positioning sheet 3 is always arranged above the upper rail 4, and the lower surface of the positioning sheet 3 can be abutted against the upper surface of the upper rail 4.

Further, the positioning block 13 and the positioning piece 3 are integrally formed, in order to facilitate the installation of the positioning block 13 and the positioning piece 3, the positioning chute 12 is penetrated upwards through the upper supporting rod, and a top cap 1 is detachably arranged at the top end of the upper supporting rod, and the top cap 1 is used for blocking the upper port of the positioning chute 12; because of the limitation of the positioning sliding groove 12, the positioning sheet 3 can only keep vertical to the upper supporting rod 2 and keep parallel to the upper surface of the upper rail 4, if the movable frame 5 is carelessly skewed in the process of moving the movable frame 5, the upper supporting rod 2 can be naturally restored to the vertical state by only sliding the positioning sheet 3 to be abutted on the upper rail 4 and pressing the positioning sheet 3 downwards.

Further, as shown in fig. 3, the two ends of the upper rail 4 and the lower rail 10 are respectively provided with a mounting rail hole 15, the box door 17 is correspondingly provided with a mounting column, the front end of the mounting column is provided with a thread section, the mounting holes are sleeved on the mounting column, and after the mounting column is sleeved with the mounting holes, the upper rail 4 and the lower rail 10 can be mounted on the box door 17 by screwing bolts on the mounting column.

Further, as shown in fig. 1, a control panel 19 is disposed on the right side of the box 18, and a temperature controller, a timer, an overtemperature alarm lamp, a heating button, a timing button, a total power supply and a timer are disposed on the control panel 19, so that the operation of the test box is directly performed on the control panel 19 without an additional connection computer for control; the box door 17 is provided with a screen bracket 20, the screen bracket 20 is detachably provided with a display screen, the display screen can be clamped in the screen bracket 20, the display screen is connected with the camera 7 through a cable, and the detachable display screen is convenient to be taken down and used in other places when not used; it is convenient to see through the display whether the light lines in the image taken by the camera 7 are aligned with the sign lines and whether the taken picture is satisfactory.

Further, a universal wheel with a brake is arranged at the bottom of the box body 18, so that the sample box can be conveniently moved.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (9)

1. The utility model provides a cable heat extension measuring device which characterized in that: the device comprises a test box and an auxiliary reading device matched with the test box for use, wherein the test box comprises a box body (18) and a box door (17) rotatably connected to the front side of the box body (18), and an observation window (16) is arranged on the box door (17);

the auxiliary reading device is arranged corresponding to the observation window (16), the auxiliary reading device comprises an upper rail (4) and a lower rail (10) which are arranged on a box body (18) and are respectively positioned on the upper side and the lower side of the observation window (16), an upper supporting rod (2) sliding in the upper rail (4), a lower supporting rod (11) sliding in the lower rail (10), a movable frame (5), a camera (7) and a positioning laser lamp (8) which are arranged on the movable frame (5), the movable frame (5) is in a frame shape, the lower end of the upper supporting rod (2) is vertically connected with the upper side surface of the movable frame (5), and the upper end of the lower supporting rod (11) is vertically connected with the lower side surface of the movable frame (5); the lens of the camera (7) and the center of the positioning laser lamp (8) are on a horizontal line.

2. The cable thermal extension measurement device of claim 1, wherein: the lens of the camera (7) is positioned in the center of the movable frame (5), and the positioning laser lamp (8) is arranged on the left side or the right side of the camera (7) through a An Deng (9).

3. The cable thermal extension measurement device of claim 1, wherein: the positioning laser lamp (8) is a word line laser or a cross line laser.

4. The cable thermal extension measurement device of claim 1, wherein: the upper rail (4) and the lower rail (10) are respectively provided with a sliding rail groove (14) which is penetrated up and down, and the front and rear inner walls of the sliding rail groove (14) are vertical surfaces; the upper support rod (2) and the lower support rod (11) are polished rods with straight front and rear sides of the cross section.

5. The cable thermal extension measurement device of claim 1, wherein: the movable frame (5) is a U-shaped frame with an opening at the left side or the right side, and the movable frame (5) comprises an upper support plate, a middle vertical plate and a lower support plate which are connected in sequence; the lower side wall of the camera (7) is provided with a clamping groove (6) which is penetrated left and right and corresponds to the width of the lower support plate.

6. The cable thermal extension measurement device of claim 1, wherein: the correcting mechanism is arranged on the upper support and comprises a positioning chute (12) which is vertically arranged on the upper support rod (2) and is T-shaped in cross section, a positioning block (13) which is matched with the positioning chute (12), and a positioning sheet (3) which is connected to the positioning block (13), wherein the positioning sheet (3) has a certain thickness and a positioning hole, and the upper support rod (2) is arranged in the positioning hole in a penetrating mode.

7. The cable thermal extension measurement device of claim 6, wherein: the positioning sliding groove (12) is upwards communicated with the upper supporting rod, and a top cap (1) is detachably arranged at the top end of the upper supporting rod.

8. The cable thermal extension measurement device of claim 1, wherein: the two ends of the upper rail (4) and the lower rail (10) are respectively provided with a mounting rail hole (15), the box door (17) is correspondingly provided with a mounting column, the front end of the mounting column is provided with a thread section, the mounting holes are sleeved on the mounting column, and the upper rail (4) and the lower rail (10) can be mounted on the box door (17) by screwing bolts on the mounting column.

9. The cable thermal extension measurement device of claim 1, wherein: a control panel (19) is arranged on the right side of the box body (18), and a temperature controller, a timer, an overtemperature alarm lamp, a heating button, a timing button, a total power supply and a cumulative timer are arranged on the control panel (19); the camera is characterized in that a screen support (20) is arranged on the box door (17), a display screen is detachably arranged on the screen support (20), and the display screen is connected with the camera (7) through a cable.

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