CN114241729B - A vibration shock alarm device - Google Patents

Abstract

The invention discloses a vibration and shock alarm device, which comprises a casing, and the inside of the casing is divided into a first installation chamber and a second installation chamber by a partition plate. One end is connected, the other end of the torsion spring of the rotator is connected to the inner wall of the first installation cavity, the inertia cylinder is arranged in the second installation cavity, and the side of the partition plate facing the second installation cavity is provided with an installation groove, and the bottom of the installation groove is provided with a through hole. One end of the pin body is inserted into the groove on the rotary body through the installation groove and the through hole, the other end of the pin body is connected with the stopper, the stopper is against one end of the inertia cylinder, and the other end of the inertia cylinder is against the inner wall of the second installation cavity. The impact vibration acceleration detection structure of the present invention is simple and reliable, the threshold value adjustment is convenient, and the measurement result is accurate; the alarm structure of the present invention is simple, reliable and eye-catching, and the state cannot be restored after the alarm.

Description

A vibration shock alarm device

technical field

The invention relates to the field of mechanical vibration detection, in particular to a vibration shock alarm device.

Background technique

During the transportation of valuable or dangerous goods, it is necessary to prevent strong impact such as falling, and avoid damage or accidental action of the goods due to strong impact and vibration. Therefore, it is necessary to monitor the shock and vibration of valuable or dangerous goods during transportation, and give an alarm to the shock and vibration that exceeds the specified threshold, so as to facilitate timely processing and reduce losses to prevent expansion.

To monitor the impact and vibration experienced by the item and give an alarm, it is necessary to detect all directions and give an accurate alarm. It is very important to ensure the accuracy of the shock and vibration detection of the device, otherwise greater losses will be caused by omission or misreporting . The existing shock and vibration detection devices measure by sensing inertial force, the detection accuracy is not high, and false alarms are prone to occur. Therefore, it is necessary to design a shock and vibration alarm device with low cost, accurate measurement and reliable long-term storage by selecting the detection quantity for shock vibration.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a vibration and shock alarm device, which can meet the shock and vibration monitoring requirements during the transportation and loading of valuable or dangerous goods. One-way acceleration sensitive measurement is required, and non-recoverable alarm prompt is required. All components of the device are assembled in a sealed casing to improve long-term storage reliability and accurate acceleration detection; multiple devices can be combined to meet the needs of detection and alarm in multiple directions.

Above-mentioned purpose of the present invention is achieved through the following technical solutions:

A vibration and shock alarm device, comprising a housing, the upper cover of the housing is provided with a top cover, the inside of the housing is divided into a first installation cavity and a second installation cavity by a partition plate, a rotator is arranged in the first installation cavity, and the rotator It is connected to one end of the torsion spring of the rotary body, and the other end of the torsion spring of the rotary body is connected to the inner wall of the first installation cavity. An inertial cylinder is arranged in the second installation cavity. The inner wall of the top cover is connected with the bottom wall of the second installation chamber, the partition plate is provided with an installation groove on the side facing the second installation chamber, and the bottom of the installation groove is provided with a through hole. A lock pin spring is set, one end of the pin body penetrates the installation groove and the through hole and is inserted into the groove on the rotary body, the other end of the pin body is connected with the stopper, the stopper is against one end of the inertia cylinder, and the other end of the inertia cylinder is connected to the second The inner wall of the installation cavity is offset.

A rectangular observation window is opened on the first installation cavity as mentioned above, and the side of the rotating body facing the rectangular observation window is divided into two halves and painted with different colors.

Compared with the prior art, the present invention has the following beneficial effects:

1. The impact vibration acceleration detection structure of the present invention is simple and reliable, the threshold value adjustment is convenient, and the measurement result is accurate;

2. The alarm structure of the device is simple, reliable, and eye-catching, and the state cannot be restored after the alarm.

Description of drawings

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

Fig. 2 is a top view sectional structure schematic diagram of the present invention.

In the figure: 1-revolving body front cover; 2-revolving body torsion spring; 3-revolving body; 4-top cover; 5-lock pin spring; 6-inertia cylinder; 7-safety spring; 8-housing; 9 - lock pin; 10 - partition plate; 801 - first installation cavity; 802 - second installation cavity; 901 - pin body; 902 - stop; 1001 - installation groove; 1002 - through hole.

Detailed ways

In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the examples. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and the protection content of the present invention is not limited in the following examples.

A vibration shock alarm device, comprising a housing 8, the upper cover of the housing 8 is provided with a top cover 4, the inside of the housing 8 is divided into a first installation cavity 801 and a second installation cavity 802 by a partition plate 10, the first installation cavity 801 is provided with a revolving body 3, which is connected to one end of the revolving body torsion spring 2, and the other end of the revolving body torsion spring 2 is connected to the inner wall of the first installation cavity 801, and the second installation cavity 802 is provided with an inertia cylinder 6, the inertia cylinder 6 The upper and lower sides are respectively offset by two safety springs 7, and the two safety springs 7 are respectively connected with the inner wall of the top cover 4 and the bottom wall of the second installation cavity 802, and the side of the partition plate 10 facing the second installation cavity 802 is provided with an installation groove 1001, the bottom of the installation groove 1001 is provided with a through hole 1002, the lock pin 9 includes a pin body 901 and a stopper 902, the pin body 901 is covered with a lock pin spring 5, and one end of the pin body 901 runs through the installation groove 1001 and the through hole 1002 Inserted into the groove on the rotating body 3 , the other end of the pin body 901 is connected to the stopper 902 , the stopper 902 is against one end of the inertia cylinder 6 , and the other end of the inertia cylinder 6 is against the inner wall of the second installation cavity 802 . A rectangular observation window is opened on the first installation cavity 801, and the side of the revolving body 3 facing the rectangular observation window is divided into two halves and painted with different colors.

There is a rectangular observation window on the housing 8, and the rectangular observation window can be made of transparent materials such as plexiglass, and the surface part color of the rotating body 3 can be seen through the rectangular observation window. Pushed by the two safety springs 7, the inertia cylinder 6 is in a balanced position and blocks the lock pin 9; the lock pin 9 compresses the lock pin spring 5, and is inserted into the groove of the rotary body 3 to lock the rotary body 3; the rotary body 3 To prevent the rotation body torsion spring 2 from unfolding, one end of the rotation body torsion spring 2 is inserted into the inner wall of the first installation cavity 801 , and the other end is inserted into the rotation body 3 . Preferably, the two opposite sides of the first installation cavity 801 are respectively provided with a front cover plate 1 of the rotary body and a rectangular observation window. The front cover plate 1 of the rotary body 3 is movably fixed on the front cover plate 1 of the rotary body. One end of the body torsion spring 2 is inserted into the inner wall of the front cover plate 1 of the revolving body, and the other end is inserted into the revolving body 3 .

The inertia cylinder 6 is pushed by two safety springs 7 to be in a balanced position. When the inertia cylinder 6 is near the equilibrium position, the end of the inertia cylinder 6 blocks one end of the lock pin 9, and the other end of the lock pin 9 is inserted into the groove of the rotating body 3, limiting Rotary body 3 rotates.

The revolving body 3 is a disc, and the semicircular part of one side of the revolving body 3 is painted red and green respectively, and the surface part of the revolving body 3 can be seen to be painted through the rectangular observation window. The lock pin 9 compresses the lock pin spring 5 and is inserted into the groove of the revolving body 3 to lock the revolving body 3. Through the observation window, the green surface of the revolving body 3 can be seen, indicating that it is in a safe state. The lock pin spring 5 pushes the lock pin 9 to move, and the lock pin 9 leaves the groove of the revolving body 3. The revolving body 3 rotates and stops driven by the revolving body torsion spring 2. Through the observation window, the red surface of the revolving body 3 can be seen. , indicating an unsafe state.

When working, the acceleration sensitive direction of the device is the moving direction of the inertia cylinder 3 . When the device is impacted by vibration in a sensitive direction, all components in the device are subjected to inertial force, and the inertial cylinder 3 compresses the safety spring 7 and moves under the inertial force.

When the impact vibration acceleration is greater than the set threshold, the inertia cylinder 3 moves due to the inertial force, and the end of the inertia cylinder 6 and the lock pin 9 will completely leave the lock pin 9, and the lock pin 9 moves under the resistance of the lock pin spring 5. One end of the lock pin 9 leaves the groove of the revolving body 3, the lock pin 9 releases the constraint on the revolving body 3, the revolving body 3 rotates and stops driven by the torsion spring 2 of the revolving body, and the alarm can be seen through the observation window on the housing 8 red.

When the impact vibration acceleration is less than the set threshold value, the inertia cylinder 3 moves due to the inertial force, the end of the inertia cylinder 6 and the lock pin 9 will not completely leave the lock pin 9, and one end of the lock pin 9 can never leave the recess of the rotary body 3 Groove, revolving body 3 can not rotate, can see safety green through the observation window on the casing 8.

The above threshold is jointly determined by the inertia cylinder 6 and the two safety springs 7 .

In order to measure impact vibration in different directions, the devices can be used in combination. The usual method of use is that the measurement sensitive directions of the three devices are arranged and installed perpendicular to each other.

It should be pointed out that the specific embodiments described in the present invention are only examples to illustrate the spirit of the present invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (1)

1. A vibration and shock alarm device, comprising a housing (8), characterized in that the upper cover of the housing (8) is provided with a top cover (4), and the inside of the housing (8) is divided into The first installation cavity (801) and the second installation cavity (802), the first installation cavity (801) is provided with a rotator (3), the rotator (3) is connected to one end of the rotator torsion spring (2), and the rotator The other end of the torsion spring (2) is connected to the inner wall of the first installation cavity (801), and the second installation cavity (802) is provided with an inertia cylinder (6), and the upper and lower sides of the inertia cylinder (6) are respectively connected with two safety springs (7) In contrast, the two safety springs (7) are respectively connected to the inner wall of the top cover (4) and the bottom wall of the second installation cavity (802), and the partition plate (10) has an installation groove facing the side of the second installation cavity (802) (1001), the bottom of the installation groove (1001) is provided with a through hole (1002), the lock pin (9) includes a pin body (901) and a stopper (902), and the pin body (901) is covered with a lock pin spring (5), one end of the pin body (901) penetrates the installation groove (1001) and the through hole (1002) and is inserted into the groove on the rotary body (3), and the other end of the pin body (901) is connected with the stopper (902), The stopper (902) is against one end of the inertia cylinder (6), and the other end of the inertia cylinder (6) is against the inner wall of the second installation cavity (802), The first installation cavity (801) is provided with a rectangular observation window, and the side of the rotating body (3) facing the rectangular observation window is divided into two halves and painted with different colors.

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