CN217505076U

CN217505076U - Metering calibration device for mechanical instrument

Info

Publication number: CN217505076U
Application number: CN202221349508.9U
Authority: CN
Inventors: 扈玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-09-27
Anticipated expiration: 2032-06-01

Abstract

The utility model provides a measurement calibrating device for mechanical instrument, which relates to the technical field of measuring instruments, the utility model comprises a device shell, a hook and a spring, wherein the hook is arranged below the device shell, the spring is arranged in the device shell, two sides in the device shell are provided with slide bars, the top end of the spring is fixedly connected with a positioning plate, the bottom end of the slide plate is provided with a buffer frame, the top end of the hook is movably connected in the buffer frame, when the prior tension spring dynamometer measures an article with unknown gravity, the spring is very easy to be overloaded and stretched in the device after the gravity of the article exceeds the measured value of the device, so that the service life of the spring is influenced, a supporting block is separated from a first limiting hole and falls down into a second limiting hole for limiting, the hook can not be separated from the device shell, the article hooked at the bottom of the hook can not fall downwards to cause influence, the tested article can not be overloaded and stretched, the service life of the spring is prolonged.

Description

Metering calibration device for mechanical instrument

Technical Field

The utility model relates to a measuring instrument technical field especially relates to a measurement calibrating device for mechanical instrument.

Background

The mechanical instrument calibration mainly measures and calibrates instruments such as mass, torque, pressure and the like, a common mechanical instrument is provided with a tension spring dynamometer, the tension spring dynamometer is a device for measuring acting force which is manufactured by the direct proportion relation between the deformation of a spring and external force, a hook at the bottom of the tension spring dynamometer is hooked on an object to be measured, so that the spring is pulled and stretched by the gravity of the object to be measured to obtain the gravity of the object to be measured, but most of springs in the existing tension spring dynamometer do not limit the stretching distance, and the spring is easily damaged.

When the existing tension spring dynamometer measures an article with unknown gravity, the spring is easily overloaded and stretched in the device after the gravity of the article exceeds the measured value of the device, so that the service life of the spring is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the prior tension spring dynamometer is used for measuring the articles with unknown gravity, after the article gravity exceeds the measured value of the device, the spring is easy to overload and stretch in the device, the service life of the spring is influenced, and a metering and calibrating device for a mechanical instrument is needed.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a measurement calibrating device for mechanics instrument, includes device shell, couple and spring, the couple sets up the below at the device shell, the spring sets up in the device shell, both sides are provided with the slide bar in the device shell, the fixed locating plate that has been hit even in spring top, spring bottom fixedly connected with slide, slide and the equal sliding connection of locating plate side are on the slide bar lateral wall, the slide bottom is provided with the buffer frame, couple top swing joint is in the buffer frame.

Preferably, the top end bearing of the positioning plate is connected with a calibration screw, and the upper part of the calibration screw is in threaded connection with the side wall of the device shell.

Preferably, an outlet is formed in the bottom end of the buffer frame, supports are arranged on two sides above the outlet, and rotating shafts are arranged on the side walls of the supports.

Preferably, the rotating shaft side end is rotatably connected with a limiting plate, the limiting plate is formed by splicing a left block and a right block, pressure springs are fixedly connected to two sides of the bottom end of the limiting plate, and through holes are formed in the bottom end of the buffer frame.

Preferably, the bottom end of each limiting plate is provided with a clamping groove, a first limiting hole is formed between the limiting plates, and the side wall of the first limiting hole is arc-shaped.

Preferably, a second limiting hole is formed in the bottom end of the device shell, a supporting block is fixedly connected to the top end of the hook, and the supporting block is arranged in a circular shape.

Preferably, the bottom end of the supporting block is attached to the side wall of the first limiting hole, and the two sides above the second limiting hole are provided with the inserted rods.

Preferably, the diameter of the second limiting hole is smaller than that of the supporting block, and the diameter of the supporting block is smaller than that of the outlet.

Has the advantages that:

this kind of a measurement calibrating device for mechanics instrument catches on the measured object article through the couple when measuring, the pulling couple downstream when the measured object article is overweight, the couple drives the bumper bracket downstream, make its bumper bracket bottom through-hole card on the inserted bar, the inserted bar upwards pushes up in the through-hole in the limiting plate bottom, thereby make the inserted bar upwards promote the limiting plate in the draw-in groove, make its limiting plate side upwards rotate in the pivot, the first spacing hole arc lateral wall of limiting plate side upwards slides on circular supporting shoe lateral wall, the supporting shoe breaks away from the spacing downthehole spacing of falling downwards in the second from first spacing, the couple can not break away from in the device shell, the article that the couple bottom was caught can not drop downwards and cause the influence, can not be with the spring overload extension after the measured object article is overweight, the life of spring has been improved.

This kind of a measurement calibrating device for mechanical instrument breaks away from the back in the buffer bay through the couple, upwards promote the couple, make its couple top end supporting shoe run through the export card in the bottom in first spacing hole, continuously upwards promote the supporting shoe and upwards extrude the limiting plate, make its limiting plate upwards rotate in the pivot and pass through the supporting shoe, thereby make pressure spring kick-back pulling limiting plate splice each other, the supporting shoe falls down in first spacing downthehole spacing, it is more convenient when making its device operation, the practicality of device has been improved.

Drawings

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

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

fig. 3 is a schematic diagram of a structure of a limiting plate in the present invention;

fig. 4 is an enlarged schematic structural view of fig. 2A of the present invention;

illustration of the drawings:

the device comprises a device shell-1, a hook-101, a slide rod-2, a positioning plate-21, a calibration screw rod-22, a spring-3, a sliding plate-31, a limiting plate-4, a bracket-41, a first limiting hole-42, an inserted rod-5, a second limiting hole-51, a buffer frame-6, an outlet-61, a clamping groove-7, a through hole-71, a rotating shaft-72, a pressure spring-8 and a supporting block-9.

Detailed Description

Referring to fig. 1-4, a metering calibration device for a mechanical instrument comprises a device shell 1, a hook 101 and a spring 3, wherein the hook 101 is arranged below the device shell 1, an object to be measured is hooked and measured through the hook 101, the spring 3 is arranged in the device shell 1, the hooked object is enabled to bear the weight on the hook 101 and then pull the spring 3 to move downwards, the distance between the downward stretching of the spring 3 and the object to be measured is more convenient and faster to measure, two sides in the device shell 1 are provided with sliding rods 2, the spring 3 is supported through the sliding rods 2, the top end of the spring 3 is fixedly connected with a positioning plate 21, the positioning plate 21 is used for positioning the lower spring 3 in the device shell 1, so that the downward stretching measurement of the spring 3 is more accurate, the bottom end of the spring 3 is fixedly connected with a sliding plate 31, the sliding plate 31 and the positioning plate 21 are slidably connected to the sliding rods 2, so that when the spring 3 is pulled to move downwards after the load of the hook 101 is borne, the top of spring 3 supports on locating plate 21, and spring 3 promotes slide 31 side when stretching down and slides down on slide bar 2, makes it more stable when colluded article and measure, and slide 31 bottom is provided with buffer frame 6, and couple 101 top swing joint makes its measured object stir-fry overweight back, and couple 101 cushions top spring 3 in buffer frame 6, and spring 3 is difficult for receiving the damage, has improved spring 3 life.

As shown in fig. 2, locating plate 21 top end bearing is connected with calibration screw 22, and threaded connection is on device shell 1 lateral wall above calibration screw 22, and calibration screw 22 top swing joint has the guard shield, protects calibration screw 22 through the guard shield, prevents that calibration screw 22 from bumping by mistake and influencing measurement accuracy, goes up and down through rotating calibration screw 22, makes its calibration screw 22 pulling bottom locating plate 21 go up and down to it is better to make locating plate 21 pulling spring 3 adjust measured precision degree.

As shown in fig. 2, an outlet 61 is formed in the bottom end of the buffer frame 6, the supports 41 are arranged on two sides above the outlet 61, the rotating shaft 72 is arranged on the side wall of each support 41, a tripod is arranged on the bottom side of each support 41, the top end of the tripod is attached to the bottom of the limiting plate 4, the bottom end of the limiting plate 4 is supported above the tripod, and the hook 101 is movably connected in the outlet 61, so that the supporting block 9 above the hook 101 is more stable when limiting in the buffer frame 6.

As shown in fig. 4, the pivot 72 side rotates and is connected with limiting plate 4, and limiting plate 4 sets up for controlling two concatenations, and limiting plate 4 bottom both sides fixedly connected with pressure spring 8, and buffer frame 6 bottom has seted up through-hole 71, and through-hole 71 symmetry draw-in groove 7 sets up, and pressure spring 8 kick-backs and stimulates limiting plate 4 and laminate in the top of tripod downwards, prevents that limiting plate 4 from rotating on pivot 72 and coming off hook 101 from buffer frame 6 in and causing the influence.

As shown in fig. 3, draw-in groove 7 has been seted up to limiting plate 4 bottom, first spacing hole 42 has been seted up between the limiting plate 4, and first spacing hole 42 lateral wall is the arc setting, pulling supporting shoe 9 downstream after the couple 101 bearing, when making its supporting shoe 9 push down in first spacing hole 42, spacing effect is better on the supporting shoe 9 lateral wall in the laminating of first spacing hole 42 arc lateral wall, supporting shoe 9 pushes down more stably between limiting plate 4, thereby make 6 top springs 3 of couple 101 pulling buffer frame stretch downwards, make its article precision when measuring higher.

As shown in fig. 2, a second limiting hole 51 is formed in the bottom end of the device housing 1, a supporting block 9 is fixedly connected to the top end of the hook 101, the supporting block 9 is arranged in a circular shape, and the hook 101 is slidably connected to the second limiting hole 51, so that the supporting block 9 is pulled to move downwards in the second limiting hole 51 after the hook 101 bears the load, and the supporting block 9 is pulled to pull the spring 3 to stretch downwards in the buffer frame 6 for measurement more conveniently.

As shown in fig. 2, the bottom end of the supporting block 9 is attached to the side wall of the first limiting hole 42, the two sides of the upper portion of the second limiting hole 51 are provided with the inserting rod 5, the inserting rod 5 is provided with the symmetrical through hole 71 and the clamping groove 7, so that the hook 101 of the inserting rod is overweight to pull the buffer frame 6 to move downwards, the buffer frame 6 moves downwards to a limited distance, the top end of the inserting rod 5 penetrates through the through hole 71 to be clamped in the clamping groove 7, the limiting plate 4 is pushed upwards by the inserting rod 5, the limiting plate 4 is overturned upwards through the side rotating shaft 72, so that the first limiting hole 42 on the side of the limiting plate 4 slides upwards on the side wall of the supporting block 9, the supporting block 9 is separated downwards from the outlet 61, the spring 3 of the limiting plate is prevented from being overloaded and stretched, and the service life of the spring 3 is prolonged.

As shown in fig. 2, the diameter of the second limiting hole 51 is smaller than that of the supporting block 9, the diameter of the supporting block 9 is smaller than that of the outlet 61, the first limiting hole 42 is formed by splicing left and right, the limiting plate 4 is turned upwards to open the first limiting hole 42 so that the supporting block 9 falls down, the supporting block 9 falls down in the second limiting hole 51 from the outlet 61, the second limiting hole 51 supports the supporting block, the hook 101 is prevented from being separated from the device shell 1, and articles hooked at the bottom of the hook 101 cannot fall down to cause influence.

As shown in fig. 2, sloping plates are arranged on two sides above the second limiting hole 51, lateral walls of the sloping plate lateral walls are symmetrically provided with supporting blocks 9, and spring rods are arranged on two sides of the bottom of the sloping plate, so that after a measured object at the bottom of the hook 101 is overweight, the top end of the hook 101 breaks away from the buffer frame 6 and falls on the second limiting hole 51 for limiting, the supporting blocks 9 are supported by the sloping plates, and the spring rods at the bottom of the sloping plates buffer the supporting blocks 9, so that the supporting blocks 9 are not easy to deform when falling downwards on the device shell 1 to bear the load, and the service life of the device shell 1 is prolonged.

The working principle is as follows: when a tested object is hooked by the hook 101 for measurement, when the tested object is overweight, the hook 101 is pulled to move downwards, the hook 101 drives the buffer frame 6 to move downwards, when the sliding plate 31 above the buffer frame 6 slides downwards on the sliding rod 2, the sliding plate 31 pulls the spring 3 to stretch downwards, so that the buffer frame 6 moves downwards to a limit position, the through hole 71 at the bottom end of the buffer frame 6 is clamped on the inserted link 5, the inserted link 5 penetrates through the through hole 71 to be upwards jacked in the clamping groove 7 at the bottom of the limiting plate 4, so that the inserted link 5 pushes the limiting plate 4 upwards in the clamping groove 7, the side end of the limiting plate 4 rotates upwards on the rotating shaft 72 at the side of the bracket 41, the side wall of the first limit hole 42 at the side of the limiting plate 4 slides upwards on the side wall of the supporting block 9, the supporting block 9 falls downwards after the first limit hole 42 opens upwards, so that the supporting block 9 falls into the second limit hole 51 for limiting, and the spring 3 drives the buffer frame 6 to move upwards after losing the bearing weight, when the hook 101 is installed in the buffer frame 6, the hook 101 is pushed upwards, the supporting block 9 at the top end of the hook 101 penetrates through the outlet 61 and is clamped at the bottom of the first limiting hole 42, the supporting block 9 is continuously pushed upwards to extrude the limiting plate 4, the limiting plate 4 rotates upwards on the rotating shaft 72 to pass through the supporting block 9, so that the pressure spring 8 rebounds to pull the limiting plate 4 to be spliced with each other, the supporting block 9 falls downwards into the first limiting hole 42 to be limited, the device shell 1 is lifted and lowered by rotating the calibration screw 22, the calibration screw 22 drives the positioning plate 21 to slide on the sliding rod 2, and the efficiency screw 22 calibrates the tension of the spring 3.

Claims

1. The utility model provides a measurement calibrating device for mechanical instrument, includes device shell (1), couple (101) and spring (3), couple (101) set up the below at device shell (1), spring (3) set up in device shell (1), both sides are provided with slide bar (2), its characterized in that in device shell (1): fixed even hitting in spring (3) top has locating plate (21), spring (3) bottom fixedly connected with slide (31), the equal sliding connection of slide (31) and locating plate (21) side is on slide bar (2) lateral wall, slide (31) bottom is provided with buffer bracket (6), couple (101) top swing joint is in buffer bracket (6).

2. The metering calibration device for the mechanical instrument according to claim 1, wherein a calibration screw (22) is connected to the top end of the positioning plate (21) in a bearing mode, and the upper portion of the calibration screw (22) is in threaded connection with the side wall of the device shell (1).

3. The metering and calibrating device for the mechanical instrument according to claim 1, wherein an outlet (61) is formed in the bottom end of the buffer frame (6), supports (41) are arranged on two sides above the outlet (61), and rotating shafts (72) are arranged on the side walls of the supports (41).

4. The metering calibration device for the mechanical instrument according to claim 3, wherein the side end of the rotating shaft (72) is rotatably connected with a limiting plate (4), the limiting plate (4) is formed by splicing a left block and a right block, two pressure springs (8) are fixedly connected to two sides of the bottom end of the limiting plate (4), and a through hole (71) is formed in the bottom end of the buffer frame (6).

5. The metering and calibrating device for the mechanical instrument according to claim 4, wherein the bottom ends of the limiting plates (4) are provided with clamping grooves (7), first limiting holes (42) are formed between the limiting plates (4), and the side walls of the first limiting holes (42) are arranged in an arc shape.

6. The metering calibration device for the mechanical instrument according to claim 1, wherein a second limit hole (51) is formed at the bottom end of the device housing (1), a support block (9) is fixedly connected to the top end of the hook (101), and the support block (9) is arranged in a circular shape.

7. The metering calibration device for the mechanical instrument according to claim 6, wherein the bottom end of the supporting block (9) is attached to the side wall of the first limiting hole (42), and the two sides above the second limiting hole (51) are provided with the inserted rods (5).

8. The metrological calibration device of claim 6, wherein the second limit hole (51) is arranged with a smaller diameter than the support block (9) and the support block (9) is arranged with a smaller diameter than the outlet (61).