CN108982943B

CN108982943B - Universal meter for electronic information engineering

Info

Publication number: CN108982943B
Application number: CN201810752964.XA
Authority: CN
Inventors: 杨阳
Original assignee: Nanjing Institute of Mechatronic Technology
Current assignee: Nanjing Institute of Mechatronic Technology
Priority date: 2018-07-10
Filing date: 2018-07-10
Publication date: 2020-11-06
Anticipated expiration: 2038-07-10
Also published as: CN108982943A

Abstract

The utility model provides an universal meter for electronic information engineering, box including open-top, two sets of lifter groups of bottom inner wall fixed mounting of box, every lifter group of group comprises four lifters, four lifters of every lifter group of group are the rectangle and arrange, all through a backup pad fixed connection between four lifter tops in every lifter group of group, the ring channel is seted up to one of them section backup pad top surface, annular recess is seted up to ring channel bottom inner wall, the interior even cooperation of recess is equipped with the several movable block, through the first ring gear fixed connection of horizontally between the top of several movable block, first ring gear is located the ring channel, the cooperation of ring channel bottom one side is equipped with the first gear that has the motor, first gear can cooperate with first ring gear meshing. The red line pen point and the black line pen point are respectively fixedly connected with a disc, the angles of the red line pen point and the black line pen point can be adjusted through the rotation of the disc, the red line pen point and the black line pen point can be inserted into the jack of a measured object more smoothly, and the red line pen point and the black line pen point are more convenient to use.

Description

Universal meter for electronic information engineering

Technical Field

The invention belongs to the technical field of multimeters, and particularly relates to a multimeter for electronic information engineering.

Background

When using the universal meter to measure, need user's both hands to hold the red line nib respectively, the black line nib is measured, when needing the record, take off the nib earlier then carry out the record again, the process is comparatively troublesome and need measure again when forgetting, in addition in measuring the universal meter directly place the desk on, the user need hang down or observe from other visual angles in the measurement process, comparatively uncomfortable at the measurement process, thereby in use is comparatively inconvenient.

Disclosure of Invention

The invention provides a universal meter for electronic information engineering, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

a universal meter for electronic information engineering comprises a box body with an opening at the top, two groups of lifting rod groups are fixedly installed on the inner wall of the bottom end of the box body, each group of lifting rod groups consists of four lifting rods, the four lifting rods of each group of lifting rod groups are arranged in a rectangular shape, the top ends of the four lifting rods in each group of lifting rod groups are fixedly connected through a supporting plate, the top surface of one supporting plate is provided with an annular groove, the inner wall of the bottom end of the annular groove is provided with an annular groove, a plurality of movable blocks are uniformly matched and arranged in the groove, the top ends of the plurality of movable blocks are fixedly connected through a horizontal first gear ring, the first gear ring is positioned in the annular groove, one side of the bottom end of the annular groove is provided with a first gear with a motor in a matching manner, the first gear can be meshed and matched with the first gear ring, a plurality of supporting, a vertical plate is fixedly arranged on one side of the top surface of the connecting plate, the top surface of the vertical plate is hinged with a fixing plate, the vertical plate is positioned on one side of the fixing plate, sliding grooves with T-shaped sections are respectively arranged at the front end and the rear end of the bottom surface of the fixing plate, sliding blocks with T-shaped sections are arranged in each sliding groove in a matching manner, a vertical rod is hinged with the bottom end of each sliding block, a second gear ring is fixedly arranged on the top surface of the connecting plate, the second gear ring is positioned on one side of the vertical plate, a rotating shaft with a motor is movably arranged on the top surface of the connecting plate, the rotating shaft and the second gear ring are concentrically arranged, a horizontal fixing rod is fixedly arranged at the top end of the rotating shaft, a second gear is movably arranged at the other end of the fixing rod, the second gear can be meshed with and matched with the second gear ring, a convex, the front end and the rear end of the top surface of the connecting plate are respectively provided with a guide groove, the bottom end of each vertical rod can be inserted into a corresponding guide groove, the top surface of the fixing plate is fixedly provided with a universal meter body, the front end and the rear end of the top surface of the other supporting plate are respectively hinged with a horizontal first telescopic rod, the hinged joint of the two first telescopic rods and the other supporting plate is positioned at the same side of the other supporting plate, the top surface of the other supporting plate is fixedly provided with two fixing blocks, the two fixing blocks are respectively positioned at two sides of the other supporting plate, the fixing block is positioned between the two first telescopic rods, the inner side of one fixing block is movably provided with a horizontal screw rod through a bearing, one end of the screw rod can penetrate through the other fixing block, the screw rod is matched and provided with a nut, the front end and the rear end, the vertical second telescopic link of movable rod tip fixed mounting of every first telescopic link, the movable rod of two second telescopic links is equallyd divide the vertical disc of difference movable mounting relative limit, the one side fixed mounting red line nib of one of them disc, the one side fixed mounting black line nib of another disc, red line nib and black line nib are located between two discs, the pen-shape metre jack is seted up respectively at both ends around another backup pad top surface, the other end of red line nib or the other end of black line nib can insert to a pen-shape metre jack in, two pen-shape metre jacks are located the front and back both ends of screw rod respectively, box open-end department one side articulates the installation case lid.

According to the multimeter for electronic information engineering, the inclined rod is fixedly installed on one side of the vertical plate, and the other end of the inclined rod is fixedly connected with the top surface of the connecting plate.

According to the multimeter for electronic information engineering, the lifting handle is fixedly installed at the top end of the box cover.

According to the multimeter for electronic information engineering, the other side of the top surface of the other supporting plate is hinged with the third telescopic rods, the two third telescopic rods are respectively positioned at the front end and the rear end of the screw rod, the extension directions of the two third telescopic rods are opposite, and the movable rod of each third telescopic rod is hinged with the other end of the loop bar of the first telescopic rod.

According to the multimeter for the electronic information engineering, the guide block is fixedly installed on one side of the bottom end of the vertical rod and is located in the guide groove.

According to the multimeter for electronic information engineering, the top end of the bump is fixedly provided with the long strip block, the long strip block is positioned above the connecting rod, and the diameter of the long strip block is larger than that of the through groove.

The invention has the advantages that: when the universal meter is needed to be used, the box cover is opened, the two groups of lifting rod groups extend to enable the supporting plate to move out of the box body, the first gear starts to rotate under the driving of the motor, the first gear is meshed and matched with the first gear ring, the first gear can drive the first gear ring to rotate, the first gear ring is fixedly connected with the supporting block, the supporting block is fixedly connected with the connecting plate, the first gear ring can drive the connecting plate to rotate, the vertical plate, the fixing plate and the universal meter body are driven to rotate, the universal meter body is rotated to a proper position to be convenient for a user to observe, the rotating shaft is driven by the motor to rotate, the rotating shaft is fixedly connected with the fixing rod, the fixing rod is movably connected with the second gear, the second gear is meshed and matched with the second gear ring, the second gear can do circular motion along the second gear ring, a convex block is fixedly installed at the eccentric position of, the second gear drives the convex block to do circular motion, so that the convex block can move back and forth in the through groove, the connecting rod can move towards the vertical plate, the connecting rod is fixedly connected with the vertical rod, the vertical rod is hinged with the sliding block, the connecting rod can drive the vertical rod to move, the sliding block can move towards the vertical plate, the vertical rod moves towards the vertical plate, the fixing plate can be turned downwards by taking a hinged point of the fixing plate and the vertical plate as a center, the fixing plate drives the universal meter body to be turned over, the universal meter body is placed in an inclined mode, the inclination angle of the universal meter body is adjusted according to different visual angles of a user, the requirement for; then the other ends of the red line pen point and the black line pen point are taken out from the pen point jack and inserted into the corresponding jacks on the universal meter body, the supporting plate provided with the first telescopic rod continues to extend under the extension of the lifting rod group, so that the second telescopic rod exceeds the box body, then the first telescopic rod is extended to move the second telescopic rod out of the box body and move the second telescopic rod above the object to be measured, then the red line pen point and the black line pen point are respectively inserted into the jack in the measuring object, then the measurement is carried out, the screw rod is in threaded fit with the nut, the nut is hinged with the first telescopic rod through the hinge rod, the nut can move along the screw rod by rotating the screw rod, and then make first telescopic link use the pin joint to overturn as the center to the distance between adjustment redline nib, the blackline nib satisfies the different distance measurement demands of jack in the different measurements thing, and in use is comparatively convenient. The placement of the universal meter body can be adjusted according to the observation visual angle of a user, so that the user can observe more comfortably, the user does not need to hold the red line pen point and the black line pen point with both hands after inserting the red line pen point and the black line pen point into the insertion holes of the measurement object, the users can conveniently record, the use is more convenient, the red line pen point and the black line pen point are fixedly connected with the disc, the red line pen point and the black line pen point can be prevented from being lost, meanwhile, the universal meter body can be adjusted according to different distances of the insertion holes in the measurement object, the use is wider, after the use is finished, the universal meter body can be moved back into the box body, the universal meter body is protected through the box body, and the universal meter body is prevented from being damaged due to collision. The red line pen point and the black line pen point are respectively fixedly connected with a disc, the angles of the red line pen point and the black line pen point can be adjusted through the rotation of the disc, the red line pen point and the black line pen point can be inserted into the jack of a measured object more smoothly, and the red line pen point and the black line pen point are more convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is a view of A of FIG. 1; FIG. 3 is a view of B of FIG. 1; fig. 4 is a view in the direction of C of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A universal meter for electronic information engineering comprises a box body 1 with an opening at the top, two groups of lifting rod groups 2 are fixedly installed on the inner wall of the bottom end of the box body 1, each group of lifting rod groups 2 consists of four lifting rods, the four lifting rods of each group of lifting rod groups 2 are arranged in a rectangular shape, the top ends of the four lifting rods in each group of lifting rod groups 2 are fixedly connected through a supporting plate 3, the top surface of one supporting plate 3 is provided with an annular groove 4, the inner wall of the bottom end of the annular groove 4 is provided with an annular groove 5, a plurality of movable blocks 6 are uniformly matched and arranged in the groove 5, the top ends of the plurality of movable blocks 6 are fixedly connected through a horizontal first gear ring 7, the first gear ring 7 is positioned in the annular groove 4, one side of the bottom end of the annular groove 4 is provided with a first gear 8 with a motor in a matching manner, the first gear 8 can be meshed and matched with, the top ends of a plurality of supporting blocks 9 are fixedly connected through a horizontal connecting plate 10, a vertical plate 11 is fixedly arranged on one side of the top surface of the connecting plate 10, a fixing plate 12 is hinged on the top surface of the vertical plate 11, the vertical plate 11 is positioned on one side of the fixing plate 12, the fixing plate 12 can be turned over by taking the vertical plate 11 as the center, so that the fixing plate 12 is inclined, sliding grooves 13 with T-shaped sections are respectively formed in the front end and the rear end of the bottom surface of the fixing plate 12, sliding blocks 14 with T-shaped sections are arranged in each sliding groove 13 in a matching manner, a vertical rod 15 is hinged at the bottom end of each sliding block 14, a second gear ring 16 is fixedly arranged on the top surface of the connecting plate 10, the second gear ring 16 is positioned on one side of the vertical plate 11, a rotating shaft 17 with a motor is, a second gear 19 is movably arranged at the other end of the fixed rod 18, the second gear 19 can be meshed with a second gear ring 16, a convex block 20 is fixedly arranged at the eccentric position of the top surface of the second gear 19, the two vertical rods 15 are fixedly connected through a connecting rod 21, the connecting rod 21 is positioned above the second gear ring 16, a strip-shaped through groove 22 is formed in the bottom edge of the connecting rod 21, the convex block 20 can be inserted into the through groove 22, guide grooves 23 are respectively formed in the front and rear ends of the top surface of the connecting plate 10, the bottom end of each vertical rod 15 can be inserted into a corresponding guide groove 23, a universal meter body 24 is fixedly arranged on the top surface of the fixed plate 12, horizontal first telescopic rods 25 are respectively hinged and arranged at the front and rear ends of the top surface of the other supporting plate 3, hinged points of the two first telescopic rods 25 and the other supporting plate 3 are positioned at, the two fixing blocks 26 are respectively positioned at two sides of the other supporting plate 3, the fixing blocks 26 are positioned between the two first telescopic rods 25, a horizontal screw 27 is movably installed at the inner side of one fixing block 26 through a bearing, one end of the screw 27 can penetrate through the other fixing block 26, a nut 28 is arranged on the screw 27 in a matched mode, the front end and the rear end of the nut 28 are respectively hinged with one end of a hinged rod 29, the other end of each hinged rod 29 is hinged with the other end of a sleeve rod of one first telescopic rod 25, a vertical second telescopic rod 30 is fixedly installed at the end part of a movable rod of each first telescopic rod 25, vertical round plates 31 are respectively movably installed at opposite sides of the movable rods of the two second telescopic rods 30, a red line pen point 32 is fixedly installed at one side of one round plate 31, a black line pen point 33 is fixedly installed at one side of the other round plate 31, and the red line, meter pen inserting holes 34 are respectively formed in the front end and the rear end of the top surface of the other supporting plate 3, the other end of the red line pen point 32 or the other end of the black line pen point 33 can be inserted into one meter pen inserting hole 34, the two meter pen inserting holes 34 are respectively located at the front end and the rear end of the screw 27, and a box cover 35 is hinged to one side of the opening at the top end of the box body 1. When the universal meter is needed to be used, the box cover 35 is opened, the two groups of lifting rod groups 2 extend to enable the supporting plate 3 to move out of the box body 1, at the moment, the first gear 8 starts to rotate under the driving of the motor, the first gear 8 is meshed and matched with the first gear ring 7, the first gear ring 8 can drive the first gear ring 7 to rotate, the first gear ring 7 is fixedly connected with the supporting block 9, the supporting block 9 is fixedly connected with the connecting plate 10, the first gear ring 7 can drive the connecting plate 10 to rotate, the vertical plate 11, the fixing plate 12 and the universal meter body 24 are driven to rotate, the universal meter body 24 is rotated to a proper position to facilitate the observation of a user, then the rotating shaft 17 is driven to rotate by the motor, the rotating shaft 17 is fixedly connected with the fixing rod 18, the fixing rod 18 is movably connected with the second gear 19, the second gear 19 is meshed and matched with the second gear ring 16, and further, a convex block 20 is fixedly installed at the eccentric position of a second gear 19, the convex block 20 is inserted into a through groove 22 of a connecting rod 21, the second gear 19 drives the convex block 20 to do circular motion so that the convex block 20 can move back and forth in the through groove 22, and further the connecting rod 21 can move towards a vertical plate 11, the connecting rod 21 is fixedly connected with a vertical rod 15, the vertical rod 15 is hinged with a sliding block 14, the connecting rod 21 can drive the vertical rod 15 and the sliding block 14 to move towards the vertical plate 11, the vertical rod 15 moves towards the vertical plate 11, so that a fixing plate 12 is turned over downwards by taking a hinge point of the fixing plate 12 and the vertical plate 11 as a center, the fixing plate 12 drives a universal meter body 24 to turn over, the universal meter body 24 is placed obliquely, the inclination angle of the universal meter body 24 is adjusted according to different visual; then taking out the other ends of the red line pen point 32 and the black line pen point 33 from the pen point insertion hole 34, inserting the other ends of the red line pen point 32 and the black line pen point 33 into corresponding insertion holes on the multimeter body 1, continuously extending the support plate 3 provided with the first telescopic rod 25 under the extension of the lifting rod group 2 to enable the second telescopic rod 30 to exceed the box body 1, then extending the first telescopic rod 25 to enable the second telescopic rod 30 to move out of the box body 1 and enable the second telescopic rod 30 to move above a measured object, then respectively inserting the red line pen point 32 and the black line pen point 33 into the insertion holes in the measured object, then measuring, enabling the screw rod 27 to be in threaded fit with the nut 28, enabling the nut 28 to be in hinged connection with the first telescopic rod 25 through the hinged rod 29, rotating the screw rod 27 to enable the nut 28 to move along the screw rod 27, further enabling the first telescopic rod 25 to turn over with the hinged point as the, the different distance measurement demands of the plug hole in different measuring objects are met, and the device is convenient to use. The placement of the multimeter body 1 can be adjusted according to the observation visual angle of a user, so that the user can observe more comfortably, the user does not need to hold the red line pen point 32 and the black line pen point 33 with both hands after inserting the red line pen point 32 and the black line pen point 33 into the jack of a measured object, so that both hands are liberated, the user can record conveniently, the use is more convenient, the red line pen point 32 and the black line pen point 33 are fixedly connected with the disc 31, the red line pen point 32 and the black line pen point 33 can be prevented from being lost, meanwhile, the multimeter body 24 can be adjusted according to different distances of the jack in the measured object, the use is wider, after the use is finished, the multimeter body 24 can be moved back into the box body 1, the multimeter body 24 is protected through the box body 1, and the multimeter body 24 is prevented from being damaged. The red line pen point 32 and the black line pen point 33 are respectively fixedly connected with the disc 31, the angle of the red line pen point 32 and the angle of the black line pen point 33 can be adjusted by rotating the disc 31, the red line pen point and the black line pen point are more smooth when being inserted into the jack of a measuring object, and the use is more convenient.

Specifically, the inclined rod 36 is fixedly installed on one side of the vertical plate 11, and the other end of the inclined rod 36 is fixedly connected with the top surface of the connecting plate 10. The vertical plate 11, the inclined rod 36 and the connecting plate 10 are combined to form a triangular structure, so that the connection is firmer and the structure is more stable.

Specifically, the handle 37 is fixedly installed at the top end of the case cover 35 according to this embodiment. The lifting handle 37 is arranged on the top surface of the box cover 35, so that a hand has a better acting point when the box cover 35 is opened, and the opening is more convenient.

Further, in this embodiment, the other side of the top surface of the other supporting plate 3 is hinged with a third telescopic rod 38, the two third telescopic rods 38 are respectively located at the front end and the rear end of the screw 27, the extending directions of the two third telescopic rods 38 are opposite, and the movable rod of each third telescopic rod 38 is hinged with the other end of the loop bar of the first telescopic rod 25. During two first telescopic links 25 use the pin joint to overturn as the center, first telescopic link 25 shifts out the 3 top surfaces of backup pad, through the connection of third telescopic link 38, can support first telescopic link 25, makes the atress more even, and the structure is more stable, and the result of use is better.

Furthermore, in the embodiment, a guide block 39 is fixedly installed on one side of the bottom end of the vertical rod 15, and the guide block 39 is located in the guide groove 23. Guide block 39 and montant 15 fixed connection, guide block 39 is located guide way 23, and montant 15 can drive guide block 39 and remove in the removal, simultaneously through the cooperation of guide block 39 with guide way 23, can further prescribe a limit to montant 15, makes two montant 15 synchronous motion to make montant 15 keep vertical state, and then the structure is more stable, and the result of use is better.

Furthermore, the top end of the projection 20 according to this embodiment is fixedly installed with the bar 40, the bar 40 is located above the connecting rod 21, and the diameter of the bar 40 is larger than that of the through groove 22. The top end of the lug 20 is provided with the strip block 40, and the diameter of the strip block 40 is larger than that of the through groove 22, so that the lug 20 is prevented from being separated from the through groove 22 in the moving process, the lug 20 is limited, the structure is more stable, and the using effect is better.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a universal meter for electronic information engineering which characterized in that: comprises a box body (1) with an opening at the top, two groups of lifting rod groups (2) are fixedly installed on the inner wall of the bottom end of the box body (1), each group of lifting rod group (2) consists of four lifting rods, the four lifting rods of each group of lifting rod group (2) are arranged in a rectangular shape, the top ends of the four lifting rods in each group of lifting rod group (2) are fixedly connected through a supporting plate (3), the top surface of one supporting plate (3) is provided with an annular groove (4), the inner wall of the bottom end of the annular groove (4) is provided with an annular groove (5), a plurality of movable blocks (6) are uniformly matched and arranged in the groove (5), the top ends of the plurality of movable blocks (6) are fixedly connected through a horizontal first gear ring (7), the first gear ring (7) is positioned in the annular groove (4), a first gear (8) with a motor is arranged on one side of the bottom end of the annular groove (4) in a matching, a plurality of supporting blocks (9) are uniformly and fixedly installed at the top end of the first gear ring (7), the top ends of the supporting blocks (9) are fixedly connected through a horizontal connecting plate (10), a vertical plate (11) is fixedly installed on one side of the top surface of the connecting plate (10), a fixing plate (12) is hinged to the top surface of the vertical plate (11), the vertical plate (11) is located on one side of the fixing plate (12), sliding grooves (13) with T-shaped sections are respectively formed in the front end and the rear end of the bottom surface of the fixing plate (12), sliding blocks (14) with T-shaped sections are arranged in each sliding groove (13) in a matching mode, a vertical rod (15) is hinged to the bottom end of each sliding block (14), a second gear ring (16) is fixedly installed on the top surface of the connecting plate (10), the second gear ring (16) is located on one side of the vertical plate (11), a rotating shaft (, a horizontal fixing rod (18) is fixedly installed at the top end of the rotating shaft (17), a second gear (19) is movably installed at the other end of the fixing rod (18), the second gear (19) can be meshed and matched with a second gear ring (16), a convex block (20) is fixedly installed at the eccentric position of the top surface of the second gear (19), the two vertical rods (15) are fixedly connected through a connecting rod (21), the connecting rod (21) is positioned above the second gear ring (16), a strip-shaped through groove (22) is formed in the bottom edge of the connecting rod (21), the convex block (20) can be inserted into the through groove (22), guide grooves (23) are respectively formed in the front end and the rear end of the top surface of the connecting plate (10), the bottom end of each vertical rod (15) can be inserted into a corresponding guide groove (23), a universal meter body (24) is fixedly installed on the top surface of the fixing plate (12), a horizontal first telescopic rod (25) is respectively hinged and, the hinged points of the two first telescopic rods (25) and the other supporting plate (3) are positioned on the same side of the other supporting plate (3), the top surface of the other supporting plate (3) is fixedly provided with two fixed blocks (26), the two fixed blocks (26) are respectively positioned on two sides of the other supporting plate (3), the fixed blocks (26) are positioned between the two first telescopic rods (25), the inner side of one fixed block (26) is movably provided with a horizontal screw rod (27) through a bearing, one end of the screw rod (27) can penetrate through the other fixed block (26), the screw rod (27) is provided with a nut (28) in a matching way, the front end and the rear end of the nut (28) are respectively hinged and connected with one end of a hinged rod (29), the other end of each hinged rod (29) is hinged and connected with the other end of a sleeve rod of one first telescopic rod (25), the end part of the movable rod of each first telescopic rod (, the opposite sides of the movable rods of the two second telescopic rods (30) are movably provided with vertical discs (31), one surface of one disc (31) is fixedly provided with a red line pen point (32), one surface of the other disc (31) is fixedly provided with a black line pen point (33), the red line pen point (32) and the black line pen point (33) are positioned between the two discs (31), the front end and the rear end of the top surface of the other supporting plate (3) are respectively provided with a meter pen jack (34), the other end of the red line pen point (32) or the other end of the black line pen point (33) can be inserted into one meter pen jack (34), the two meter pen jacks (34) are respectively positioned at the front end and the rear end of the screw rod (27), and one side of the opening at the top end of the box body (1) is hinged.

2. The multimeter for electronic information engineering according to claim 1, wherein: and one side of the vertical plate (11) is fixedly provided with an inclined rod (36), and the other end of the inclined rod (36) is fixedly connected with the top surface of the connecting plate (10).

3. The multimeter for electronic information engineering according to claim 1, wherein: and a lifting handle (37) is fixedly arranged at the top end of the box cover (35).

4. The multimeter for electronic information engineering according to claim 1, wherein: the other side of the top surface of the other supporting plate (3) is hinged with a third telescopic rod (38), the two third telescopic rods (38) are respectively positioned at the front end and the rear end of the screw rod (27), the extension directions of the two third telescopic rods (38) are opposite, and the movable rod of each third telescopic rod (38) is hinged with the other end of the loop bar of the first telescopic rod (25).

5. The multimeter for electronic information engineering according to claim 1, wherein: one side of the bottom end of the vertical rod (15) is fixedly provided with a guide block (39), and the guide block (39) is positioned in the guide groove (23).

6. The multimeter for electronic information engineering according to claim 1, wherein: the top end of the bump (20) is fixedly provided with a long block (40), the long block (40) is positioned above the connecting rod (21), and the diameter of the long block (40) is larger than that of the through groove (22).