CN212301606U

CN212301606U - Falling body type impact calibration device

Info

Publication number: CN212301606U
Application number: CN202020758468.8U
Authority: CN
Inventors: 柯其利
Original assignee: Suzhou Diling Technology Co ltd
Current assignee: Suzhou Diling Technology Co ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-01-05
Anticipated expiration: 2030-05-11

Abstract

The utility model discloses a falling body formula strikes calibrating device, including the bottom plate, bottom plate one side is equipped with hoist mechanism, and both ends are equipped with respectively about hoist mechanism with bottom plate, roof fixed connection's promotion mounting bracket, and hoist mechanism one side is equipped with double-acting cylinder, is equipped with the base on the bottom plate, and base upper portion both ends symmetry is equipped with the guide pillar, is equipped with buffer between guide pillar and the base, and the buffer upper end still is equipped with the holder, is equipped with the tup in the holder. The utility model has the advantages that: the sensor mounted on the hammer head is used for collecting required test data, the acceleration range which can be provided is 50-20000 m/s ^2, the pulse width range is 1-30 ms, and the device is small in size, large in instantaneous energy, wide in calibration range, good in repeatability, high in precision and high in safety.

Description

Falling body type impact calibration device

Technical Field

The utility model relates to a mechanics measurement calibration technical field specifically is a calibration device is strikeed to falling body formula.

Background

The mechanical measurement calibration device is an important guarantee for detecting and calibrating the accuracy of the mechanical environment detection element. The falling body type impact calibration device is mainly used for detecting and calibrating an impact acceleration sensor so as to determine the performance of the impact acceleration sensor.

At present, a vibration method is usually adopted to calibrate the impact acceleration sensor, but the acceleration of the vibration calibration device can only reach 1000m/s ^2, the measurement range of the commonly used impact acceleration sensor is 20000m/s ^2, and the vibration calibration device can not meet the measurement range requirement far away.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a calibration device is strikeed to falling style to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the falling body type impact calibration device comprises a bottom plate, wherein a lifting mechanism is arranged on one side of the bottom plate, a lifting mounting frame fixedly connected with the bottom plate and a top plate is arranged at the upper end and the lower end of the lifting mechanism respectively, a double-acting cylinder is arranged on one side of the lifting mechanism, a base is arranged on the bottom plate, guide pillars are symmetrically arranged at the two ends of the upper portion of the base, a buffer device is arranged between the guide pillars and the base, a retainer is further arranged at the upper end of the buffer device, and a hammer head is arranged in the.

Preferably, a screw rod is arranged in the lifting mechanism, and the screw rod penetrates through the top plate to be connected with a stepping motor arranged on the upper portion of the top plate.

Preferably, one end of the double-acting cylinder is connected with the screw rod through a mounting block, and the other end of the double-acting cylinder is provided with a mute bearing and a lifting block.

Preferably, the hammer head penetrates through the retainer, a guide device is arranged in the retainer, the guide device is an air flotation shaft sleeve, and a cushion pad is arranged on the contact end face of the hammer head and the upper portion of the retainer.

Preferably, the hammer head penetrates through the lower end of the retainer and is sequentially provided with a cushion pad and a stopper, and the size of the stopper is larger than that of the opening on the retainer.

Preferably, the retainer is sleeved on the guide posts which are symmetrically arranged, and the guide device arranged in the retainer is used for providing a friction-free guide effect for the guide posts.

Preferably, a sensor is further arranged on the hammer head, and the sensor is arranged on the upper end surface or the side surface of the hammer head.

Preferably, an anvil block is arranged on the upper part of the base between the two buffering devices.

Advantageous effects

The utility model provides a falling body formula strikes calibrating device, through the experimental data that install the sensor collection needs on the tup, the acceleration scope that can provide is 50 ~ 20000m/s 2, and the pulse width scope is 1 ~ 30ms, and this device is small, the energy is big in the twinkling of an eye, calibration range is wide, good reproducibility, precision height, and the security is high.

Drawings

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

fig. 2 is a schematic plan view of the double-acting cylinder of the present invention;

fig. 3 is a schematic side view of the present invention.

Reference numerals

1-bottom plate, 2-base, 3-buffer device, 4-retainer, 5-hammer, 6-guide pillar, 7-top plate, 8-lifting mounting rack, 9-lifting mechanism, 10-air floating shaft sleeve, 11-double-acting air cylinder, 12-buffer pad, 13-stopper, 14-lifting block, 15-silent bearing, 16-stepping motor and 17-anvil block.

Detailed Description

The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

Examples

As shown in fig. 1-3, a falling body type impact calibration device comprises a bottom plate 1, a lifting mechanism 9 is arranged on one side of the bottom plate 1, a lifting mounting frame 8 fixedly connected with the bottom plate 1 and a top plate 7 is respectively arranged at the upper end and the lower end of the lifting mechanism 9, a double-acting cylinder 11 is arranged on one side of the lifting mechanism 9, a base 2 is arranged on the bottom plate 1, guide pillars 6 are symmetrically arranged at the two ends of the upper portion of the base 2, a buffer device 3 is arranged between the guide pillars 6 and the base 2, a retainer 4 is further arranged at the upper end of the buffer device 3.

Preferably, a screw rod is arranged in the lifting mechanism 9, penetrates through the top plate 7 and is connected with a stepping motor 16 arranged at the upper part of the top plate.

Preferably, one end of the double-acting cylinder 11 is connected with the screw rod through a mounting block, and the other end is provided with a mute bearing 15 and a lifting block 14.

Preferably, the hammer 5 is arranged in the retainer 4 in a penetrating manner, a guide device is arranged in the retainer 4, the guide device is an air flotation shaft sleeve 10, and a buffer cushion 12 is arranged on the contact end face of the hammer 5 and the upper part of the retainer 4.

Preferably, the hammer 5 penetrates through the lower end of the holder 4 to be sequentially provided with the cushion 12 and the stopper 13, and the size of the stopper 13 is larger than that of the opening on the holder 4.

Preferably, the holder 4 is sleeved on the symmetrically arranged guide posts 6, and the guiding device arranged in the holder 4 is used for providing a friction-free guiding effect for the guide posts 6.

Preferably, a sensor is further arranged on the hammer head 5, and the sensor is arranged on the upper end surface or the side surface of the hammer head 5.

Preferably, an anvil 17 is disposed on the upper portion of the base 2 between the two cushioning devices 3.

A stepping motor is adopted to drive a screw pair to serve as a lifting mechanism, and a telescopic double-acting cylinder is arranged on the lifting mechanism and used for lifting and releasing the retainer; the retainer is internally provided with an air floatation shaft sleeve which respectively corresponds to the guide pillar and the hammer head. The hammer head is matched with the air floatation shaft sleeve, the hammer head can slide up and down for a certain distance in the retaining process, and buffer cushions are arranged at two ends of the stroke, so that direct mechanical impact is avoided; the guide post penetrates through the other two air floatation shaft sleeves of the retainer and is fixed on the base, and the bottom of the guide post is provided with a buffer device for buffering the retainer; the pedestal mounting is on the bottom plate, and guide pillar and roof fixed connection, hoist mechanism are fixed through promoting mounting bracket and bottom plate and roof.

When the air floatation device works, the air floatation shaft sleeve is inflated firstly, the lifting mechanism is started, the double-acting cylinder is extended out to lift the retainer to a set height, the double-acting cylinder is retracted, the retainer falls down along the guide pillar, the hammer head collides with the bottom plate firstly, and then the retainer is contacted with the buffer device; in order to prevent the hammer head from impacting the retainer directly to generate impact and affecting the index, buffering pads are additionally arranged at two ends of the free stroke of the hammer head, and a stopper is arranged at the bottom of the hammer head in order to prevent the hammer head from flying out of the retainer. The double-acting air cylinder can avoid signal interference of electric devices or magnetic devices.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. A falling body impact calibration device, comprising a base plate (1), characterized in that: the improved lifting mechanism is characterized in that a lifting mechanism (9) is arranged on one side of the bottom plate (1), a lifting mounting frame (8) fixedly connected with the bottom plate (1) and the top plate (7) is arranged at the upper end and the lower end of the lifting mechanism (9) respectively, a double-acting cylinder (11) is arranged on one side of the lifting mechanism (9), a base (2) is arranged on the bottom plate (1), guide pillars (6) are symmetrically arranged at the two ends of the upper portion of the base (2), a buffer device (3) is arranged between the guide pillars (6) and the base (2), a retainer (4) is further arranged at the upper end of the buffer device (3), and a hammer head.

2. The falling impact calibration device of claim 1, wherein: a screw rod is arranged in the lifting mechanism (9), and the screw rod penetrates through the top plate (7) to be connected with a stepping motor (16) arranged at the upper part of the top plate.

3. The falling impact calibration device of claim 2, wherein: one end of the double-acting air cylinder (11) is connected with the screw rod through a mounting block, and the other end of the double-acting air cylinder is provided with a mute bearing (15) and a lifting block (14).

4. The falling impact calibration device of claim 1, wherein: the hammer head (5) penetrates through the retainer (4), a guide device is arranged in the retainer (4), the guide device is an air flotation shaft sleeve (10), and a cushion pad (12) is arranged on the contact end face of the hammer head (5) and the upper portion of the retainer (4).

5. The falling impact calibration device of claim 1, wherein: the hammer head (5) penetrates through the lower end of the retainer (4) and is sequentially provided with a cushion pad (12) and a stopper (13), and the size of the stopper (13) is larger than that of an opening on the retainer (4).

6. The falling impact calibration device of claim 4, wherein: the retainer (4) is sleeved on the guide posts (6) which are symmetrically arranged, and the guide device arranged in the retainer (4) is used for providing a friction-free guide effect for the guide posts (6).

7. The falling impact calibration device of claim 1, wherein: still be equipped with the sensor on tup (5), the sensor set up in the up end or the side of tup (5).

8. The falling impact calibration device of claim 1, wherein: an anvil block (17) is arranged on the upper portion of the base (2) and located between the two buffering devices (3).