CN217943070U

CN217943070U - Clamp for checking and correcting programmable stopwatch

Info

Publication number: CN217943070U
Application number: CN202221106641.1U
Authority: CN
Inventors: 赵晓俊; 李玮; 赵焕宇
Original assignee: Dalian Institute Of Measurement Inspection And Testing Co ltd
Current assignee: Dalian Institute Of Measurement Inspection And Testing Co ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-12-02
Anticipated expiration: 2032-05-10

Abstract

The utility model belongs to the technical field of stopwatch metrological verification calibration appurtenance, a can programme-controlled stopwatch check and use anchor clamps is disclosed. Comprises a base, a supporting frame and a bottom plate; the base is connected with the bottom plate through a rotary pushing assembly; the top of the support frame is connected with one side of the bottom plate through a rotating shaft; rotating the bottom plate around the rotating shaft; the lower part of the other side of the bottom plate is connected with the rotary pushing assembly; the bottom of the supporting frame is fixed on the base. The clamp for checking and correcting the stopwatch is capable of adjusting the position of the stopwatch, clamping the stopwatch with any shape and any size, small in size, light in weight, easy to operate, convenient to carry and capable of being controlled in a program mode.

Description

Clamp for checking and correcting programmable stopwatch

Technical Field

The utility model belongs to the technical field of the stopwatch metrological verification calibration appurtenance, the utility model relates to a can programme-controlled stopwatch examines school and uses anchor clamps.

Background

The basis for stopwatch metrological verification/calibration is the JJG237-2010 stopwatch national metrological procedure, in which a stopwatch verifier for verifying electronic and mechanical stopwatches is specified to pass through two movements of an electromagnet in a stopwatch clamp, giving a standard time interval, with a maximum allowable error introduced by the stopwatch clamp of ± 3ms. The conventional stopwatch clamp is used for clamping a stopwatch to be detected by four fixing pieces, the fixing pieces are arranged in a fixing groove at a certain angle, the adjustable range is narrow, the stopwatch can only clamp a stopwatch with a conventional appearance (a standard circle in a top view), and the stopwatch clamp cannot firmly clamp an electronic stopwatch and a mechanical stopwatch with unconventional appearances (such as an oval shape and an irregular appearance) and unconventional sizes.

The fixing piece in the existing stopwatch clamp is made of iron materials, and in the clamping process, indentation or scratch is often caused to a stopwatch shell, a clamping mark is left after detection, and damage is caused to the stopwatch to be detected.

According to the requirements of national regulations, in the process of verifying a mechanical stopwatch, the position of a dial plate of the watch to be detected needs to be changed to enable the dial plate to be in a horizontal or vertical position, so that a tester needs to manually and frequently switch the horizontal or vertical position of a stopwatch fixing device. The existing stopwatch fixing device is made of iron materials, is large in size and heavy in weight, is inconvenient for operation of detection personnel and is more inconvenient to carry to a client site.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the above-mentioned background art, providing a can programme-controlled stopwatch examine anchor clamps for school, be that the position is placed to an adjustable stopwatch, but the arbitrary appearance of centre gripping and the stopwatch of arbitrary size, small, light in weight, easy operation, conveniently carry, can programme-controlled stopwatch examine the school and use anchor clamps.

The utility model provides a technical scheme that its technical problem adopted is: a clamp for checking and calibrating a program-controlled stopwatch comprises a base, a supporting frame and a bottom plate; the base is connected with the bottom plate through a rotary pushing assembly; the top of the support frame is connected with one side of the bottom plate through a rotating shaft; rotating the bottom plate around the rotating shaft; the lower part of the other side of the bottom plate is connected with the rotary pushing assembly; the bottom of the supporting frame is fixed on the base.

Screw holes are uniformly distributed on the whole bottom plate; the base plate is also provided with a start-stop electromagnet, a zero clearing electromagnet and a stopwatch pressing sheet, the start-stop electromagnet and the zero clearing electromagnet are fixedly arranged on the base plate, the installation positions of the start-stop electromagnet and the zero clearing electromagnet respectively correspond to a start-stop key and a zero clearing key of the stopwatch to be detected, and the base plate is also provided with a stopwatch area to be detected; the stopwatch pressing piece is arranged on the periphery of the area of the stopwatch to be detected, the upper end of the stopwatch pressing piece is pressed on the stopwatch to be detected, and the lower end of the stopwatch pressing piece is connected with the screw hole in the bottom plate through a bolt; the start-stop electromagnet and the zero clearing electromagnet are connected with a screw hole on the bottom plate through bolts;

the rotary pushing assembly comprises an electric push rod, a rotating shaft and a rotating shaft bracket; two ends of the electric push rod are respectively connected with the bottom plate and the base through a rotating shaft and a rotating shaft bracket, and the rotating shaft bracket is specifically a rotating shaft bracket A and a rotating shaft bracket B; the telescopic end of the electric push rod is connected with the rotating shaft and the rotating shaft bracket A; the other end of the electric push rod is connected with the rotating shaft and the rotating shaft bracket B.

Furthermore, a rotating shaft support A is connected with the lower portion of the bottom plate, and a rotating shaft support B is connected with the base.

The lower part of the other side of the bottom plate is connected with a telescopic rod at the telescopic end of an electric push rod of the rotary pushing assembly, and the telescopic rod can jack up or put down the bottom plate through telescopic to change the relative position of the bottom plate; the other end of the electric push rod is connected with the base through the rotating shaft and the rotating shaft support B, and when the telescopic rod of the electric push rod stretches, the push rod integrally rotates around the rotating shaft connected with the base.

Furthermore, the contacts of the start-stop electromagnet and the zero-clearing electromagnet, which are contacted with the stopwatch to be detected, are all hard plastic contacts or silica gel contacts.

Furthermore, the start-stop electromagnet, the zero clearing electromagnet and the electric push rod are respectively connected with a stopwatch calibrating instrument through control lines. And automatic action is realized through PLC system program control, and automatic calibration of the stopwatch is completed.

Further, the electric push rod can be replaced by a pneumatic cylinder or a hydraulic cylinder with controllable stroke.

Furthermore, the start-stop electromagnet and the zero clearing electromagnet are AC or DC power supply type push-pull electromagnets.

Furthermore, the side surface of the stop watch pressing sheet is in a 2-shaped shape, namely the top end is an arc surface, and the bottom is a plane; a protective sleeve or a protective film is arranged at the cambered surface of the top end, and an installation groove is formed in the bottom plane; the mounting groove is oval in shape.

Furthermore, the bottom plane of the stop watch pressing sheet is arranged in a screw hole on the bottom plate through one or more bolts.

Furthermore, the support frame is a box body formed by a single vertical plate or four vertical plates in a surrounding mode.

Furthermore, a plurality of high-density screw holes are uniformly distributed on the bottom plate along the length direction and the width direction, the diameter of each screw hole is phi 3.2mm, and the transverse distance and the vertical distance between the centers of two adjacent screw holes are 10mm.

Furthermore, the number of the stop watch pressing sheets is more than 2.

Compared with the prior art, the utility model beneficial effect who has is:

1. because the utility model adopts the uniform and high-density screw holes arranged on the bottom plate, the stopwatch is fixed by combining a plurality of stopwatch pressing sheets arbitrarily, and the electronic stopwatch and the mechanical stopwatch with any shape, any size and any structure can be clamped freely; the problem that the stopwatch with irregular shape and irregular size cannot be clamped in the prior art is solved.

2. Because the bottom plate of the utility model is provided with a plurality of high-density screw holes, and the shape of the installation groove of the bottom plane of the stop watch pressing sheet is oval, the screw holes for installing the start-stop electromagnet, the zero clearing electromagnet and the stop watch pressing sheet can be conveniently found no matter what shape the stop watch to be detected is and the stop watch is placed at any position on the bottom plate; the stopwatch to be detected can be firmly, reliably and safely fixed on the bottom plate, and the measurement error caused by insecure installation is reduced.

3. The utility model discloses an electric putter realizes the stopwatch in the perpendicular nimble transform of arbitrary direction of dial plate level and dial plate, replaces measurement personnel's manual transform, and liberation both hands improve detection efficiency by a wide margin.

4. The utility model discloses cooperation stopwatch examination appearance through control electric putter, open stop electro-magnet, zero clearing electro-magnet, can realize the automated inspection of electronic stopwatch and mechanical stopwatch.

5. The utility model discloses a stopwatch preforming top sets up to the cambered surface, prevents that the stopwatch from removing in the vertical direction, makes the stopwatch centre gripping more firm. And a protective sleeve or a protective film is added at the cambered surface to prevent the casing of the stopwatch from being damaged and protect the stopwatch to be detected.

6. The utility model discloses an open and stop electro-magnet and zero clearing electro-magnet and the contact of being examined the stopwatch contact be rigid plastic contact or silica gel contact, both guarantee that the measuring error who introduces is enough little, protect the stopwatch button not receive the damage again.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a schematic structural view a of the clamp for checking and calibrating a program-controlled stopwatch (the support frame is a single vertical plate, and the screw hole only shows a part of the schematic view).

Fig. 2 is a schematic diagram B of the clamp structure for checking and calibrating a program-controlled stopwatch (the support frame is a box body enclosed by four vertical plates, and the screw hole only shows a part of the schematic diagram).

Fig. 3 is a schematic view of the bottom plate of the present invention.

Fig. 4 is a schematic view of a stop watch tablet according to the present invention.

In the figure: 1. the stopwatch comprises a bottom plate, 2, a support frame, 3, an electric push rod, 4, a base, 5, a stopwatch pressing sheet, 6, a screw hole, 7, a start-stop electromagnet, 8, a zero clearing electromagnet, 9, a stopwatch to be detected, 10, a rotating shaft, 11, rotating shaft supports A and 12 and a rotating shaft support B.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments. In the embodiment, the related devices are not limited in model, and the working function is realized.

Example 1

A clamp for checking and calibrating a programmable stopwatch is shown in figures 1, 3 and 4 and comprises a base 4, a support frame 2 and a bottom plate 1; the base 4 is connected with the bottom plate 1 through a rotary pushing assembly; the top of the support frame 2 is connected with one side of the bottom plate 1 through a rotating shaft 10; rotating the base plate 1 about the rotating shaft 10; the lower part of the other side of the bottom plate 1 is connected with a rotary pushing assembly; the bottom of the supporting frame 2 is fixed on the base 4.

The screw holes 6 are uniformly distributed on the whole base plate 1; the base plate 1 is also provided with a start-stop electromagnet 7, a zero clearing electromagnet 8 and a stopwatch pressing sheet 5, the start-stop electromagnet 7 and the zero clearing electromagnet 8 are fixedly arranged on the base plate 1, the installation positions of the start-stop electromagnet 7 and the zero clearing electromagnet 8 respectively correspond to a start-stop key and a zero clearing key of a stopwatch to be detected, and the base plate 1 is also provided with a stopwatch area to be detected; the stopwatch pressing sheet 5 is arranged on the periphery of a stopwatch area to be checked, the upper end of the stopwatch pressing sheet 5 is pressed on the stopwatch to be checked, and the lower end of the stopwatch pressing sheet 5 is connected with the screw hole 6 in the bottom plate 1 through a bolt; the start-stop electromagnet 7 and the reset electromagnet 8 are connected with a screw hole 6 on the bottom plate through bolts;

the rotary pushing assembly comprises an electric push rod 3, a rotating shaft and a rotating shaft bracket; two ends of the electric push rod 3 are respectively connected with the bottom plate 1 and the base 4 through a rotating shaft and a rotating shaft support, and the rotating shaft supports are a rotating shaft support A11 and a rotating shaft support B12; the telescopic end of the electric push rod 3 is connected with the rotating shaft and the rotating shaft bracket A11; the other end of the electric push rod 3 is connected with the rotating shaft and the rotating shaft bracket B12.

Further, a rotation shaft support a 11 is connected to the lower side of the base plate 1, and a rotation shaft support B12 is connected to the base 4.

Furthermore, the contacts of the start-stop electromagnet 7 and the zero clearing electromagnet 8, which are contacted with the stopwatch to be detected, are both hard plastic contacts or silica gel contacts.

Further, the start-stop electromagnet 7, the zero clearing electromagnet 8 and the electric push rod 3 are respectively connected with a stopwatch calibrating instrument through control lines. And automatic action is realized through PLC system program control, and automatic calibration of the stopwatch is completed.

Further, the electric push rod 3 can be replaced by a pneumatic or hydraulic cylinder with controllable stroke.

Furthermore, the start-stop electromagnet 7 and the zero clearing electromagnet 8 are push-pull electromagnets of an alternating current or direct current power supply type.

Furthermore, the side surface of the stopwatch pressing sheet 5 is in a 2-shaped shape, namely the top end is an arc surface, and the bottom is a plane; a protective sleeve or a protective film is arranged at the arc surface of the top end, and an installation groove is arranged on the plane of the bottom; the mounting groove is oval in shape.

Further, the bottom plane of the stop watch plate 5 is mounted in the screw hole 6 of the bottom plate 1 by one or more bolts.

Further, the support frame 2 is a single vertical plate.

Further, the high-density screw holes 6 arranged on the bottom plate 1 are uniformly distributed along the length direction and the width direction, the diameter of each screw hole 6 is phi 3.2mm, and the transverse distance and the vertical distance between the centers of every two adjacent screw holes 6 are both 10mm.

Furthermore, the number of the stop watch sheets 5 is more than 2.

Example 2

A clamp for checking and calibrating a programmable stopwatch is shown in figures 1, 2 and 4 and comprises a base 4, a support frame 2 and a bottom plate 1; the base 4 is connected with the bottom plate 1 through a rotary pushing assembly; the top of the support frame 2 is connected with one side of the bottom plate 1 through a rotating shaft 10; rotating the base plate 1 around the rotating shaft 10; the lower part of the other side of the bottom plate 1 is connected with a rotary pushing assembly; the bottom of the supporting frame 2 is fixed on the base 4.

The bottom plate 1 is integrally and uniformly provided with screw holes 6; the bottom plate 1 is also provided with a start-stop electromagnet 7, a zero clearing electromagnet 8 and a stopwatch pressing sheet 5, the start-stop electromagnet 7 and the zero clearing electromagnet 8 are fixedly arranged on the bottom plate 1, the installation positions of the start-stop electromagnet 7 and the zero clearing electromagnet 8 respectively correspond to a start-stop key and a zero clearing key of a stopwatch to be detected, and the bottom plate 1 is also provided with a stopwatch area to be detected; the stopwatch pressing piece 5 is arranged on the periphery of a stopwatch area to be detected, the upper end of the stopwatch pressing piece 5 is pressed on the stopwatch to be detected, and the lower end of the stopwatch pressing piece 5 is connected with the screw hole 6 on the bottom plate 1 through a bolt; the start-stop electromagnet 7 and the zero clearing electromagnet 8 are connected with a screw hole 6 on the bottom plate through bolts;

the rotary pushing assembly comprises an electric push rod 3, a rotating shaft and a rotating shaft bracket; two ends of the electric push rod 3 are respectively connected with the base plate 1 and the base 4 through a rotating shaft and a rotating shaft bracket, and the rotating shaft bracket is specifically a rotating shaft bracket A11 and a rotating shaft bracket B12; the telescopic end of the electric push rod 3 is connected with the rotating shaft and the rotating shaft bracket A11; the other end of the electric push rod 3 is connected with the rotating shaft and the rotating shaft bracket B12.

Further, a rotating shaft support A11 is connected with the lower part of the bottom plate 1, and a rotating shaft support B12 is connected with the base 4.

Furthermore, the contacts of the start-stop electromagnet 7 and the zero clearing electromagnet 8, which are in contact with the stopwatch to be detected, are both hard plastic contacts or silica gel contacts.

Further, the start-stop electromagnet 7, the zero clearing electromagnet 8 and the electric push rod 3 are respectively connected with a stopwatch calibrating instrument through control lines. And the automatic action is realized through the program control of a PLC system, and the automatic calibration of the stopwatch is completed.

Further, the start-stop electromagnet 7 and the zero clearing electromagnet 8 are push-pull electromagnets of an alternating current or direct current power supply type.

Furthermore, the side surface of the stopwatch pressing sheet 5 is in a 2-shaped shape, namely the top end is an arc surface, and the bottom is a plane; a protective sleeve or a protective film is arranged at the cambered surface of the top end, and an installation groove is formed in the bottom plane; the mounting groove is oval in shape.

Furthermore, the support frame 2 is a box body surrounded by four vertical plates.

Furthermore, the number of the stop watch sheets 5 is more than 2.

The working principle of the utility model is as follows: a stopwatch 9 to be tested is placed at a proper position on a bottom plate 1 and is fixed by 2-4 stopwatch pressing sheets 5, a start-stop electromagnet 7 and a zero clearing electromagnet 8 are installed at proper positions according to the appearance structure of the stopwatch 9 to be tested, and the contacts of the start-stop electromagnet 7 and the zero clearing electromagnet 8 are respectively aligned with a start-stop key and a zero clearing key of the stopwatch 9 to be tested, so that the installation of the clamp and the stopwatch to be tested is completed. The stopwatch detector controls and outputs a standard time interval to the start-stop electromagnet 7, and the stop-stop stopwatch 9 to be detected is started and stopped for detection. After the detection is finished once, the stopwatch calibrator controls the zero clearing electromagnet 8 to clear the stopwatch 9 to be detected.

For the verification of the mechanical stopwatch, a PLC system is arranged in the stopwatch calibrator; the stopwatch detector controls the electric push rod 3 to push the bottom plate 1 to rotate from the horizontal direction to the vertical direction through a PLC system program, and position conversion from the dial plate level of the stopwatch 9 to any angle perpendicular to the dial plate is achieved. The load driving force of the electric push rod 3 and the push rod stretching speed are moderate and are selected according to the total weight of the start-stop electromagnet 7, the zero clearing electromagnet 8 and the stopwatch 9 to be detected, which are arranged on the bottom plate 1 and the bottom plate 1.

If only be used for detecting the electronic stopwatch, can remove base 4, support frame 2 and electric putter 3, only leave bottom plate 1, open and stop electro-magnet 7, zero clearing electro-magnet 8 and stopwatch preforming 5, compare with the anchor clamps that current detection electronic stopwatch used like this, the volume reduces greatly, and weight alleviates, convenient operation easily carries.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention without departing from the spirit thereof.

Claims

1. A clamp for checking and calibrating a programmable stopwatch is characterized by comprising a base (4), a support frame (2) and a bottom plate (1); the base (4) is connected with the bottom plate (1) through a rotary pushing assembly; the top of the support frame (2) is connected with one side of the bottom plate (1) through a rotating shaft (10); rotating the base plate (1) around the rotating shaft (10); the lower part of the other side of the bottom plate (1) is connected with a rotary pushing component; the bottom of the supporting frame (2) is fixed on the base (4); screw holes (6) are uniformly distributed on the whole base plate (1); the base plate (1) is also provided with a start-stop electromagnet (7), a zero clearing electromagnet (8) and a stopwatch pressing sheet (5), the start-stop electromagnet (7) and the zero clearing electromagnet (8) are fixedly arranged on the base plate (1), the installation positions of the start-stop electromagnet and the zero clearing electromagnet correspond to a start-stop key and a zero clearing key of the stopwatch to be detected respectively, and the base plate (1) is also provided with a stopwatch area to be detected; the stopwatch pressing piece (5) is arranged on the periphery of the area of the stopwatch to be detected, the upper end of the stopwatch pressing piece (5) is pressed on the stopwatch to be detected, and the lower end of the stopwatch pressing piece (5) is connected with a screw hole (6) on the bottom plate (1) through a bolt; the start-stop electromagnet (7) and the zero clearing electromagnet (8) are connected with a screw hole (6) on the bottom plate through bolts;

the rotary pushing assembly comprises an electric push rod (3), a rotating shaft and a rotating shaft support; two ends of the electric push rod (3) are respectively connected with the bottom plate (1) and the base (4) through a rotating shaft and a rotating shaft support, and the rotating shaft supports are a rotating shaft support A (11) and a rotating shaft support B (12); the telescopic end of the electric push rod (3) is connected with the rotating shaft and the rotating shaft bracket A (11); the other end of the electric push rod (3) is connected with the rotating shaft and a rotating shaft bracket B (12).

2. The clamp for checking and calibrating a programmable stopwatch according to claim 1, wherein a rotary shaft support A (11) is connected to the lower part of the bottom plate (1), and a rotary shaft support B (12) is connected to the base (4).

3. The clamp for checking and calibrating the programmable stopwatch according to claim 2, wherein the contacts of the start-stop electromagnet (7) and the zero-clearing electromagnet (8) contacted with the stopwatch to be checked are both hard plastic contacts or silica gel contacts.

4. The clamp for calibrating the programmable stopwatch according to claim 3, wherein the start-stop electromagnet (7), the zero-clearing electromagnet (8) and the electric push rod (3) are respectively connected with the stopwatch calibrator through control lines.

5. The clamp for checking and calibrating the programmable stopwatch of claim 4, wherein the start-stop electromagnet (7) and the zero-clearing electromagnet (8) are push-pull electromagnets of AC or DC power supply type.

6. The clamp for checking and calibrating a programmable stopwatch according to claim 5, wherein the stopwatch tablet (5) has a 2-shaped side surface, i.e. the top is a cambered surface and the bottom is a plane surface; a protective sleeve or a protective film is arranged at the arc surface of the top end, and an installation groove is arranged on the plane of the bottom; the mounting groove is oval in shape.

7. The clamp for checking and calibrating a programmable stopwatch according to claim 6, wherein the bottom plane of said stopwatch plate (5) is mounted in the threaded hole (6) of the bottom plate (1) by one or more bolts.

8. The clamp for checking and calibrating a programmable stopwatch according to claim 7, wherein the supporting frame (2) is a single vertical plate or a box body surrounded by four vertical plates.

9. The clamp for checking and calibrating the programmable stopwatch according to claim 8, wherein the high-density screw holes (6) arranged on the bottom plate (1) are uniformly distributed along the length direction and the width direction, the diameter of each screw hole (6) is phi 3.2mm, and the transverse distance and the vertical distance between the centers of two adjacent screw holes (6) are both 10mm.