CN212807110U

CN212807110U - Calibration device for mechanical instrument measurement

Info

Publication number: CN212807110U
Application number: CN202022242575.8U
Authority: CN
Inventors: 易晓荣
Original assignee: Shenzhen Zhongke Measurement Technology Co ltd
Current assignee: Shenzhen Zhongke Measurement Technology Co ltd
Priority date: 2020-10-11
Filing date: 2020-10-11
Publication date: 2021-03-26
Anticipated expiration: 2030-10-11

Abstract

The utility model discloses a calibrating device for mechanical instrument measurement, including casing and extension spring, the inside of casing slides respectively and pegs graft and has first supporting shoe and second supporting shoe, extension spring's one end and the bottom fixed connection of first supporting shoe, and the other end and second supporting shoe fixed connection, the inside first recess of having seted up of second supporting shoe, the inside rotation of first recess is connected with two sets of fasteners, and is two sets of it has the couple to slide to peg graft between the fastener, the threaded hole has been seted up at the top of casing, screw hole female connection has the calibration screw, calibration screw and first supporting shoe swivelling joint, the casing top is provided with the end cover. The utility model discloses can avoid power for the calibration screw in the calibrating device when measuring appear not hard up the error of weighing that brings, and swiftly convenient at the zero setting process, protect the dynamometry spring not receive the damage simultaneously, to a certain extent has prolonged life.

Description

Calibration device for mechanical instrument measurement

Technical Field

The utility model relates to a mechanics technical field specifically is a calibrating device for mechanical instrument measurement.

Background

The mechanical instrument is a general name of all mechanical instruments taking the law of stress and stress effect as the principle. Common mechanical instruments include measuring instruments such as a weighing apparatus balance, a push-pull force meter, a torsion meter, a hardness meter and a vibration meter. A tension spring dynamometer is a device for measuring acting force by using the relationship between the deformation of a spring and external force, the hook of the tension spring dynamometer is used for hanging a measured object on the hook, the spring is immediately drawn and stretched by the gravity of the measured object, and because the stretching of the spring is in direct proportion to the external force within the elastic limit, the acting force or the object gravity can be directly read from a scale value on a shell indicated by a pointer of a spring scale.

The conventional calibration device of the tension spring dynamometer is usually internally provided with a screw for calibration, and in such a way, the screw needs to be adjusted by a screwdriver to calibrate the tension spring dynamometer, so that the process is complicated and time is wasted; or the screw that will calibrate tension spring dynamometer and use sets up in the outside, often can lead to the tension spring dynamometer inaccurate because the mistake bumps the screw, and simultaneously, the gravity of general measured object is unknown, if this measuring object surpasss the weighing capacity of tension spring dynamometer, can lead to certain damage to tension spring dynamometer spring to influence the use of tension spring dynamometer and reduce its life, in order to solve the problem, therefore we need propose a calibrating device for mechanical instrument measurement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a calibrating device for mechanical instrument measurement, the casing top is provided with the end cover, can protect the calibration screw can not be bumped by mistake and influence the measurement of this device, because the top of casing is provided with the second recess in the calibration process, the second recess is inside to be provided with the first magnet piece, end cover one end fixed mounting has the second magnet piece, because the first magnet piece and the second magnet piece attract each other, can directly open or close the end cover, the process is convenient and fast; inside the first recess of second supporting shoe is connected with two sets of fasteners through the fixed axle rotation, be provided with compression spring between two sets of fasteners and the first recess respectively, it has the couple to slide to peg graft between two sets of fasteners, one side fixed weld of couple has the dog, when the measured object surpassed the device's bearing scope, the inclined plane of fastener bottom and the inclined plane contact of casing bottom and fastener receive gravity to push down, make two sets of fastener upper end interval grow, the dog can't be supported to the fastener, the couple can drop rapidly, protection extension spring does not receive the damage, thereby the device's life has been protected, in order to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a calibrating device for mechanical instrument measurement, includes casing and extension spring, its characterized in that: a first supporting block and a second supporting block are respectively inserted into the shell in a sliding manner, one end of an extension spring is fixedly connected with the bottom of the first supporting block, the other end of the extension spring is fixedly connected with the second supporting block, a first groove is formed in the second supporting block, a fixed shaft is inserted into the first groove, two groups of clamping pieces are rotatably connected into the first groove of the second supporting block through the fixed shaft, a compression spring is respectively arranged between each two groups of clamping pieces and the first groove, a hook is inserted between each two groups of clamping pieces in a sliding manner, a stop block is fixedly welded on one side of the hook, a threaded hole is formed in the top of the shell, a calibration screw is connected with the threaded hole in a threaded manner, a damper is fixedly installed on one side of the first supporting block, the calibration screw is rotatably connected with the first supporting block through the damper, and a second groove is further formed in the, an end cover is inserted in the second groove, and a handle is hinged to the top end of the shell.

Preferably, the spout has been seted up to the casing both sides, first supporting shoe fixed weld has first sliding block, second supporting shoe fixed weld has the second sliding block, first sliding block and second sliding block slide and peg graft inside the spout, and first sliding block and second sliding block all set up to T type sliding block.

Preferably, one end of the calibration screw is fixedly welded with a first plug-in block, and the first plug-in block is plugged in the damper.

Preferably, a second insertion block is arranged in the first groove, a third insertion block corresponding to the first insertion block is arranged on one side of the clamping piece, one end of the compression spring is fixedly installed with the second insertion block, the other end of the compression spring is fixedly installed with the third insertion block, and the second insertion block and the third insertion block are respectively inserted into two sides of the compression spring.

Preferably, the bottom of the clamping piece is provided with an inclined plane, and the inner side wall of the bottom of the shell is provided with an inclined plane corresponding to the inclined plane.

Preferably, a first magnet block is arranged in the second groove, a second magnet block corresponding to the first magnet block is fixedly mounted at one end of the end cover, and the first magnet block and the second magnet block are mutually attracted.

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

1. the utility model has the advantages that the end cover is arranged on the top of the shell, so that the calibration screw can be protected from being mistakenly bumped to influence the metering of the device, and meanwhile, the end cover can be directly opened or closed through the design of the magnet block, thereby being convenient and rapid;

2. through the design of fastener and dog, when the measured object is overweight, the utility model discloses inside couple can drop rapidly, and protection extension spring does not receive the damage, has prolonged the device's life to a certain extent.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is a schematic structural view of the second support block and the clamping member of the present invention;

fig. 4 is a schematic structural view of a compression spring according to the present invention;

fig. 5 is a schematic structural view of the sliding chute of the present invention.

In the figure: 1. a housing; 2. an extension spring; 3. a first support block; 4. a second support block; 5. a first groove; 6. a fixed shaft; 7. a fastener; 8. a compression spring; 9. hooking; 10. a stopper; 11. a threaded hole; 12. calibrating the screw; 13. a damper; 14. a second groove; 15. an end cap; 16. a first inclined plane; 17. a second inclined plane; 18. a handle; 19. a chute; 20. a first slider; 21. a second slider; 22. a first plug-in block; 23. a second insertion block; 24. a third plug-in block; 25. a first magnet block; 26. a second magnet block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a technical scheme: referring to fig. 1, 2 and 5, a calibrating device for mechanical instrument measurement comprises a housing 1 and an extension spring 2, wherein a first supporting block 3 and a second supporting block 4 are respectively inserted into the housing 1 in a sliding manner, sliding grooves 19 are formed in two sides of the housing 1, the first supporting block 3 is fixedly welded with a first sliding block 20, the second supporting block 4 is fixedly welded with a second sliding block 21, the first sliding block 20 and the second sliding block 21 are inserted into the sliding grooves 19 in a sliding manner, the first sliding block 20 and the second sliding block 21 are both T-shaped sliding blocks, one end of the extension spring 2 is fixedly connected with the bottom of the first supporting block 3, the other end of the extension spring 2 is fixedly connected with the second supporting block 4, the top end of the shell 1 is hinged with a handle 18, the design enables the extension spring 2, the first supporting block 3 and the second supporting block 4 to slide in the shell 1, and meanwhile, a certain limiting effect is achieved;

referring to fig. 3 and 4, a first groove 5 is formed in a second supporting block 4, a fixed shaft 6 is inserted into the first groove 5, two groups of fasteners 7 are rotatably connected to the first groove 5 of the second supporting block 4 through the fixed shaft 6, a compression spring 8 is respectively arranged between the two groups of fasteners 7 and the first groove 5, a first inclined surface 16 is arranged at the bottom of each fastener 7, a second inclined surface 17 corresponding to the first inclined surface is arranged on the inner side wall of the bottom of the shell 1, a hook 9 is inserted between the two groups of fasteners 7 in a sliding manner, a stop block 10 is fixedly welded on one side of the hook 9, the stop block 10 is a hemispherical stop block, when a measured object exceeds the bearing range of the device, the first inclined surface 16 at the bottom of each fastener 7 is in contact with the second inclined surface 17 at the bottom of the shell 1, the fastener 7 is pressed by gravity, the distance between the upper ends of the two groups of, thereby the hook 9 is rapidly dropped off, the extension spring 2 is protected from being damaged, and the service life of the device is protected;

as shown in fig. 2, a threaded hole 11 is formed in the top of the housing 1, a calibration screw 12 is connected to the threaded hole 11 in an internal thread manner, a damper 13 is fixedly installed on one side of the first supporting block 3, the calibration screw 12 is rotatably connected with the first supporting block 3 through the damper 13, a first inserting block 22 is fixedly welded to one end of the calibration screw 12, the first inserting block 22 is inserted into the damper 13, and the damper 13 can avoid weighing errors caused by looseness of the calibration screw 12 when a calibration device for mechanical instrument measurement is used for measurement, so that the measurement accuracy is ensured;

as shown in fig. 2, the top of the housing 1 is further provided with a second groove 14, an end cover 15 is inserted into the second groove 14, a first magnet block 25 is arranged inside the second groove 14, a second magnet block 26 corresponding to the end cover 15 is fixedly mounted at one end of the end cover 15, the first magnet block 25 and the second magnet block 26 attract each other, the end cover can protect the calibration screw from influencing the metering of the device due to mistaken collision, and meanwhile, the design of the magnet blocks can make the opening and closing of the end cover more convenient and faster.

The working principle is as follows: opening the end cover 15, rotating the calibration screw 12, driving the first supporting block 3 to move up and down at a certain position in the shell 1 to zero and calibrate the calibration device metered by the mechanical instrument, then covering the end cover 15 by magnetic attraction of the first magnet block 25 and the second magnet block 26, if the pointer of the device happens to be on the zero scale, the above steps are not needed, hanging the measured object on the hook 9, lifting the handle 18 to make the measured object separate from the ground, because the extension of the spring is in direct proportion to the external force, the scale value on the shell indicated by the pointer of the device can be directly read out, if the weight of the measured object exceeds the weighing range of the device, the first inclined plane 16 at the bottom of the clamping piece 7 contacts with the second inclined plane 17 at the bottom of the shell 1 and the clamping piece 7 is pressed down by gravity, so that the distance between the upper ends of the two groups of clamping pieces 7 is enlarged, and the clamping piece 7 can not support the stop block, thereby the hook 9 of the hook falls off rapidly, and the measured object is not lifted; if the calibrating device for the mechanical instrument measurement needs to be recovered to use, the compression spring 8 is arranged to jack the end, provided with the stop block 10, of the hook 9 between the two groups of clamping pieces 7 again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Calibration device for mechanical instrumentation, comprising a housing (1) and a tension spring (2), characterized in that: a first supporting block (3) and a second supporting block (4) are respectively inserted into the shell (1) in a sliding manner, one end of an extension spring (2) is fixedly connected with the bottom of the first supporting block (3), the other end of the extension spring (2) is fixedly connected with the second supporting block (4), a first groove (5) is formed in the second supporting block (4), a fixed shaft (6) is inserted into the first groove (5), two groups of clamping pieces (7) are rotatably connected into the second supporting block (4) through the fixed shaft (6), a compression spring (8) is respectively arranged between each group of clamping pieces (7) and the first groove (5), a hook (9) is inserted between each two groups of clamping pieces (7) in a sliding manner, a stop block (10) is fixedly welded on one side of the hook (9), and a threaded hole (11) is formed in the top of the shell (1), threaded hole (11) female connection has calibration screw (12), first supporting block (3) one side fixed mounting has attenuator (13), calibration screw (12) are through attenuator (13) and first supporting block (3) swivelling joint, casing (1) top still is provided with second recess (14), it has end cover (15) to peg graft in second recess (14), the top of casing (1) articulates there is handle (18).

2. A calibration device for mechanical instrumentation according to claim 1, wherein: spout (19) have been seted up to casing (1) both sides, first supporting shoe (3) fixed welding has first sliding block (20), second supporting shoe (4) fixed welding has second sliding block (21), first sliding block (20) and second sliding block (21) slide and peg graft inside spout (19), and first sliding block (20) and second sliding block (21) all set up to T type sliding block.

3. A calibration device for mechanical instrumentation according to claim 1, wherein: one end of the calibration screw (12) is fixedly welded with a first plug-in block (22), and the first plug-in block (22) is plugged in the damper (13).

4. A calibration device for mechanical instrumentation according to claim 1, wherein: the novel clamping device is characterized in that a second inserting block (23) is arranged inside the first groove (5), a third inserting block (24) corresponding to the first groove is arranged on one side of the clamping piece (7), one end of the compression spring (8) is fixedly installed with the second inserting block (23), the other end of the compression spring (8) is fixedly installed with the third inserting block (24), and the second inserting block (23) and the third inserting block (24) are respectively inserted into two sides of the compression spring (8).

5. A calibration device for mechanical instrumentation according to claim 1, wherein: the bottom of the clamping piece (7) is provided with a first inclined plane (16), and the inner side wall of the bottom of the shell (1) is provided with a second inclined plane (17) corresponding to the first inclined plane.

6. A calibration device for mechanical instrumentation according to claim 1, wherein: a first magnet block (25) is arranged in the second groove (14), a second magnet block (26) corresponding to the second groove is fixedly mounted at one end of the end cover (15), and the first magnet block (25) and the second magnet block (26) are mutually attracted.