CN215450405U

CN215450405U - Impact overload alarm device

Info

Publication number: CN215450405U
Application number: CN202122097848.9U
Authority: CN
Inventors: 张正君
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-01-07
Anticipated expiration: 2031-09-01

Abstract

The utility model discloses an impact overload alarm device, which comprises a lower cover and an upper cover combination connected with the lower cover, a mass block is arranged between the lower cover and the upper cover, the mass block is connected with the lower cover through a first spring, a guide shaft is arranged in the upper cover assembly along the horizontal direction, a second spring and a sleeve are sleeved on the guide shaft, two ends of the second spring are respectively abutted against the inner wall of the upper cover assembly and the sleeve, the top of the mass block is provided with a limiting column, the height of the limiting column is less than the vertical distance between the mass block and the lower cover, a conducting strip is arranged in the upper cover combination along the direction of the guide shaft, the conducting strip is located above the guide shaft, a first conducting column and a second conducting column are fixedly arranged at the top of the upper cover assembly along the direction of the conducting strip, and one end, close to the second spring, of the conducting strip is connected with the first conducting column. The utility model provides an impact overload alarm device which can continuously alarm for a long time and is easier to attract the attention of operators.

Description

Impact overload alarm device

Technical Field

The utility model relates to the technical field of transportation tool protection, in particular to an impact overload alarm device.

Background

Objects such as expensive precision instruments and the like are generally required to be protected from external force impact, and in the transportation operation of the expensive precision instruments, although special transportation vehicles are used for transportation, sometimes, the vehicles inevitably bump due to road reasons, so that the precision instruments on the vehicles collide with the outside and impact is received. In order to monitor the impact condition received by a precision instrument in transportation, an impact overload alarm device is usually arranged outside the package of the precision instrument, and when the impact force received by the precision instrument is larger than the bearable range of the precision instrument, the impact overload alarm device can give an alarm for reminding.

A chinese patent document (publication number: CN 211893034U) discloses an automobile anti-collision protection device with alarm function, which separates a base equipped with a first conductive sheet from a connecting block of a second conductive sheet by using the elastic force of a spring, when a collision head connected with the connecting block receives a collision impact force greater than the elastic force of the spring, the collision head pushes the connecting block to compress the spring and move towards the direction from the first conductive sheet, and when the second conductive sheet on the connecting block contacts with the first conductive sheet, a storage battery inside the connecting block and an alarm form a closed circuit, thereby giving an alarm; however, if the collision head receives an instant impact force, the first conducting plate and the second conducting plate can be immediately separated under the action of the rebound force of the spring after contacting, so that the alarm has short alarming time and is not easy to attract the attention of operators.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an impact overload alarm device which can continuously alarm for a long time so as to be more easily noticed by operators.

The utility model discloses an impact overload alarm device, which adopts the technical scheme that:

an impact overload alarm device comprises a lower cover, a mass block and an upper cover combination, wherein the lower cover is positioned below the upper cover combination and is connected with the upper cover combination, the lower end of the mass block is positioned in the lower cover and is connected with the bottom of the lower cover through a first spring, a guide shaft is arranged in the upper cover combination along the horizontal direction, a second spring and a sleeve are sleeved on the guide shaft, the two ends of the second spring are respectively abutted against the inner wall and the sleeve of the upper cover combination, the upper end of the mass block is positioned in the upper cover combination, the top of the mass block is provided with a limiting column, the height of the limiting column is smaller than the vertical distance between the mass block and the bottom of the lower cover, a conductive sheet is arranged in the upper cover combination along the axial direction of the guide shaft and is positioned above the guide shaft, a first conductive column and a second conductive column are fixedly arranged at the top of the upper cover combination along the axial direction of the guide shaft, and when the sleeve is positioned below the second conductive column, one end of the conducting strip close to the second conductive column is in contact with the second conductive column under the support of the sleeve.

Preferably, a protrusion is arranged at one end of the guide shaft close to the second conductive column along the circumferential direction, and the sleeve is located between the second spring and the protrusion.

Preferably, the sleeve is in a truncated cone shape with a hole in the middle, and the cross sectional area of one end, close to the first spring, of the sleeve is smaller than that of one end, close to the protrusion.

Preferably, a first through hole is formed in one side, close to the protrusion, of the upper cover assembly, and the central axis of the first through hole is parallel to the central axis of the guide shaft and corresponds to the end face of the end, with the larger cross section, of the sleeve.

As preferred scheme, the upper cover combination includes the upper cover to and be located upper washer and the lower gasket of upper cover, upper washer and lower gasket all with upper cover inner wall threaded connection, the upper washer is located the top of guiding axle, the conducting strip is located the hole of upper washer, the lower gasket is located the below of guiding axle, the equal block in both ends of guiding axle is between upper washer and lower gasket, the hole of lower gasket is the shoulder hole, one side that the shoulder hole is close to the lower cover is the macropore, the one end that the quality piece was equipped with spacing post is located the macropore, first through-hole is located the upper cover, and is close to bellied one side.

Preferably, the upper cover assembly further comprises a transparent cover plate, the cover plate is in a step shape, a second through hole is formed in one side, away from the lower cover, of the upper cover, the cover plate is located above the upper gasket, one end, with a large cross-sectional area, of the cover plate is clamped between the upper gasket and the top of the inner side of the upper cover, and the other end, with a small cross-sectional area, of the cover plate is located in the second through hole.

Preferably, the cover plate is provided with a third through hole and a fourth through hole, the first conductive column is installed in the third through hole, the second conductive column is installed in the fourth through hole, and the upper cover is in threaded connection with the lower cover.

According to the preferable scheme, a positioning column is arranged at the bottom of the inner side of the lower cover, the first spring is sleeved on the positioning column, a blind hole is formed in the end face of one end, close to the lower cover, of the mass block, one end, far away from the lower cover, of the first spring is located in the blind hole, two ends of the first spring are connected with the bottom of the inner side of the lower cover and the top of the blind hole respectively, and the first spring is used for jacking the mass block.

Preferably, one end of the conductive sheet located below the second conductive pillar is provided with a bending portion, and the bending portion bends toward the direction close to the second conductive pillar.

Preferably, a collision plate is arranged below the lower cover, and the collision plate is detachably connected with the lower cover through screws.

The impact overload alarm device disclosed by the utility model has the beneficial effects that: when the impact overload alarm device is installed on a package of a precision instrument, the side of the lower cover faces the outer side of the package, when the precision instrument is inclined, the lower cover stops moving after touching an external object, the mass block compresses the first spring under the action of inertia and continues to move towards the direction close to the lower cover, when the moving distance of the mass block is greater than the height of the limiting column, the blocking of the limiting column to the sleeve is released, the second spring compressed by the sleeve rebounds, and pushes the sleeve to move towards one end close to the second conductive column along the guide axial direction, when the sleeve moves to the position below the second conductive column, one end, close to the second conductive column, of the conductive column is in contact with the second conductive column above the sleeve under the supporting action of the sleeve, as the first conductive column and the second conductive column can be respectively connected with the alarm device, at the moment, the alarm device is switched on and starts alarming, and the sleeve is under the blocking action of the second spring, the alarm device cannot automatically return to the initial position, so that the alarm device always gives an alarm continuously, and the attention of operators is more easily brought.

Drawings

Fig. 1 is a schematic view of an impact overload warning device of the present invention.

Fig. 2 is an exploded view of an impact overload warning device of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of a lower cover of an impact overload warning apparatus of the present invention.

Fig. 5 is a schematic view of a mass of an impact overload warning device of the present invention.

Fig. 6 is a schematic view of an upper cover of an impact overload warning device of the utility model.

Fig. 7 is a schematic view of a cover plate of an impact overload warning device of the utility model.

Fig. 8 is a cross-sectional view of an impact overload warning device of the present invention when the device is not subjected to an overload impact.

Fig. 9 is an enlarged schematic view of a portion B in fig. 8.

Fig. 10 is an enlarged schematic view of the portion C in fig. 8.

Fig. 11 is a cross-sectional view of an impact overload warning device of the present invention after an overload impact.

Fig. 12 is an enlarged schematic view of a portion D in fig. 11.

Detailed Description

The utility model will be further elucidated and described with reference to the embodiments and drawings of the specification:

referring to fig. 1 to 12, an impact overload warning device includes a lower cap 10, a mass 20, and an upper cap assembly 30, the lower cap 10 is located below the upper cap assembly 30, the lower cap 10 is connected to the upper cap assembly 30, a lower end of the mass 20 is located in the lower cap 10, the mass 20 is connected to a bottom of the lower cap 10 through a first spring 40, a guide shaft 50 is installed in the upper cap assembly 30 along a horizontal direction, a second spring 60 and a sleeve 70 are sleeved on the guide shaft 50, two ends of the second spring 60 respectively abut against an inner wall of the upper cap assembly 30 and the sleeve 70, an upper end of the mass 20 is located in the upper cap assembly 30, an end of the upper end of the mass 20 is provided with a position-limiting pillar 21, a height of the position-limiting pillar 21 is smaller than a vertical distance between a lower end of the mass 20 and a bottom of the lower cap 10, a conductive plate 80 is disposed in the upper cap assembly 30 along a central axis direction of the guide shaft 50, the conductive plate 80 is located above the guide shaft 50, the top of the upper cover assembly 30 is fixedly provided with a first conductive pillar 90 and a second conductive pillar 100 along the central axis direction of the guide shaft 50, and one end of the conductive sheet 80 close to the second spring 60 is connected to the first conductive pillar 90.

When the sleeve 70 is manually pushed to move toward the second spring 60 along the guide shaft 50, the second spring 60 is compressed, and when the sleeve 70 is located between the limit post 21 and the second spring 60, the end surface of one end of the sleeve 70, which is far away from the second spring 60, abuts against the limit post 21, at this time, the second spring 60 is in a compressed state, and the sleeve 70 cannot move back under the blocking of the limit post 21. When the precision instrument topples over, the lower cover 10 stops moving after touching an external object, the mass block 20 compresses the first spring 40 under the action of inertia and continues to move towards the direction close to the lower cover 10, when the moving distance of the mass block 20 is greater than the height of the limiting column 21, the blocking of the limiting column 21 to the sleeve 70 is released, the second spring 60 compressed by the sleeve 70 rebounds, and pushes the sleeve 70 to move towards one end close to the second conductive column 100 along the guide shaft 50, when the sleeve 70 moves to the position below the second conductive column 100, one end, close to the second conductive column 100, of the conductive sheet 80 contacts with the second conductive column 100 above the sleeve 70 under the supporting action of the sleeve 70, as the first conductive column 90 and the second conductive column 100 can be respectively connected with the alarm device, at this time, the alarm device is switched on and starts alarming, the sleeve 70 cannot automatically return to the initial position under the blocking action of the second spring 60, therefore, the alarm device can continuously give an alarm all the time, so that the attention of operators can be more easily attracted.

One end of the guide shaft 50 close to the second conductive column 100 is provided with a protrusion 51 along the circumferential direction, and the sleeve 70 is located between the second spring 60 and the protrusion 51. The protrusion 51 may serve to limit the displacement of the sleeve 70 moving on the guide shaft 50, and may serve to ensure that the sleeve 70 moves to a position right under the second conductive post 100 under the resilient force of the second spring 60.

The sleeve 70 has a truncated cone shape with a hole in the middle, and the cross-sectional area of the end of the sleeve 70 near the first spring 40 is smaller than that of the end near the protrusion 51. Therefore, the height of the end of the sleeve 70 close to the protrusion 51 is increased, the sleeve 70 can better lift the conductive sheet 80, and the conductive sheet 80 is more closely contacted with the second conductive post 100.

A first through hole 311 is formed at one side of the upper cover assembly 30 close to the protrusion, and the central axis of the first through hole 311 is parallel to the central axis of the guide shaft 50 and corresponds to the end surface of the end with the larger cross section of the sleeve 70.

When the operator finds the alarm of the alarm device, a linear object such as an iron wire can be pushed against the end surface of the sleeve 70 through the first through hole 311, the sleeve 70 is in a truncated cone shape, so that the outer periphery of the sleeve 70 is an inclined plane along the direction of the guide shaft 50, when the sleeve 70 moves along the guide shaft 50 to the side of the second spring 60, the second spring 60 is compressed, the position-limiting post 21 is pressed downwards by the sleeve 70, the mass block 20 moves downwards, the first spring 40 is compressed, when the sleeve 70 slides over the position-limiting post 21, the mass block 20 moves upwards under the resilience of the first spring 40, the position-limiting post 21 again abuts against the end surface of the end with the larger cross-sectional area of the sleeve 70, the sleeve 70 is limited at the side far from the second conductive post 100, the end of the conductive plate 80 close to the second conductive post 100 descends under the self-gravity, and separates from the second conductive post 100 again, therefore, the circuit of the alarm device is disconnected, and the alarm of the alarm device is released, so that the impact overload alarm device can be repeatedly used.

The upper cover assembly 30 comprises an upper cover 31, an upper gasket 32 and a lower gasket 33 which are positioned in the upper cover 31, the upper gasket 32 and the lower gasket 33 are in threaded connection with the inner wall of the upper cover 31, the upper gasket 32 is positioned above the guide shaft 50, the conducting plate 80 is positioned in an inner hole of the upper gasket 32, the lower gasket 33 is positioned below the guide shaft 50, two ends of the guide shaft 50 are clamped between the upper gasket 32 and the lower gasket 33, the inner hole of the lower gasket 33 is a stepped hole, one side of the stepped hole, which is close to the lower cover 10, is a large hole, one end, provided with the limiting column 21, of the mass block 20 is positioned in the large hole, and the first through hole 311 is positioned on the upper cover 31 and close to one side of the protrusion 51. The guide shaft 50 is clamped between the upper washer 32 and the lower washer 33, and the position of the upper washer 32 and the lower washer 33 in the upper cover 31 is adjusted, so that the vertical distance between the sleeve 70 on the guide shaft 50 and the mass block 20 is adjusted, and the limiting columns 21 can block the movement of the sleeve 70.

The upper cover assembly 30 further includes a transparent cover plate 34, the cover plate 34 is in a step shape, a second through hole 312 is formed in one side of the upper cover 31 away from the lower cover 10, the cover plate 34 is located above the upper gasket 32, one end of the cover plate 34 with a larger cross-sectional area is clamped between the upper gasket 32 and the top of the inner side of the upper cover 31, and one end of the cover plate with a smaller cross-sectional area is located in the second through hole 312. The cover plate 34 is made of a transparent material, which facilitates the operator to observe the position of the sleeve 70 and the position of the sleeve 70 against the limit post 21 when the operator pushes the sleeve 70 back with an iron wire. By setting the cover plate 34 to be stepped, the mounting and fixing of the cover plate 34 in the upper cover 31 is facilitated.

The cover plate 34 is provided with a third through hole 341 and a fourth through hole 342, the first conductive pillar 90 is installed in the third through hole 341, and the second conductive pillar 100 is installed in the fourth through hole 342. The first conductive column 90 and the second conductive column 100 are convenient to mount and fix, and the first conductive column 90 and the second conductive column 100 are also convenient to connect with an alarm device. The upper cover 31 is in threaded connection with the lower cover 10, so that the upper cover 31 and the lower cover 10 are convenient to detach.

The bottom of the inner side of the lower cover 10 is provided with a positioning column 11, the first spring 40 is sleeved on the positioning column 11, the end face of one end, close to the lower cover 10, of the mass block 20 is provided with a blind hole 22, one end, far away from the lower cover 10, of the first spring 40 is located in the blind hole 22, and two ends of the first spring 40 are connected with the bottom of the inner side of the lower cover 10 and the top of the blind hole 22 respectively. The positioning column 11 and the blind hole 22 are arranged to prevent the first spring 40 from being deviated or inclined.

One end of the conductive sheet 80 located below the second conductive pillar 100 is provided with a bending portion 81, and the bending portion 81 bends toward the second conductive pillar 100. The conductive sheet 80 is supported by the sleeve 70 and is in close contact with the second conductive post 100.

The lower part of the lower cover 10 is provided with a collision plate 110, and the collision plate 110 is detachably connected with the lower cover 10 by screws. The lower cover 10 can be protected by providing the collision plate 110, the service life of the lower cover 10 is prolonged, and the collision plate 110 is easily replaced after being damaged.

In the above scheme, by providing the mass block 20, the mass block 20 is connected to the lower cover 10 through the first spring 40, one side of the mass block 20 close to the sleeve 70 is provided with the limit post 21, the limit post 21 abuts against an end surface of one end of the sleeve 70 far away from the second spring 60, after collision impact occurs with the outside, the lower cover 10 stops moving after contacting a collision object, the mass block 20 compresses the first spring 40 due to inertia and continues moving, when the moving distance of the mass block 20 is greater than the height of the limit post 21, the limit post 21 is separated from the sleeve 70, the block of the sleeve 70 by the limit post 21 is released, the sleeve 70 moves to the lower side of the second conductive post 100 under the effect of the resilience force of the second spring 60, one end of the conductive plate 80 close to the second conductive post 100 is supported by the sleeve 70, moves upward and contacts with the second conductive post 100, the first conductive post 90 is connected to the second conductive post 100, the alarm device connected with the first conductive column 90 and the second conductive column 100 is turned on and starts alarming, the sleeve 70 cannot be automatically reset under the blocking of the second spring 60, so that the alarm device is always in an on state, and the alarm device always gives an alarm continuously, so that the attention of operators is easy to be attracted.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An impact overload alarm device is characterized by comprising a lower cover, a mass block and an upper cover, wherein the lower cover is positioned below the upper cover and connected with the upper cover, the lower end of the mass block is positioned in the lower cover and connected with the bottom of the lower cover through a first spring, a guide shaft is arranged in the upper cover in the horizontal direction, a second spring and a sleeve are sleeved on the guide shaft, two ends of the second spring are respectively abutted against the inner wall and the sleeve of the upper cover, the upper end of the mass block is positioned in the upper cover and the top of the mass block is provided with a limiting column, the height of the limiting column is smaller than the vertical distance between the mass block and the bottom of the lower cover, a conducting strip is arranged in the upper cover in the axial direction of the guide shaft and positioned above the guide shaft, a first conducting column and a second conducting column are fixedly arranged at the top of the upper cover along the axial direction of the guide shaft, and when the sleeve is positioned below the second conductive column, one end of the conducting strip close to the second conductive column is in contact with the second conductive column under the support of the sleeve.

2. The impact overload warning device of claim 1, wherein the guide shaft is provided with a protrusion at an end thereof adjacent to the second conductive post along a circumferential direction, and the sleeve is located between the second spring and the protrusion.

3. The impact overload warning device of claim 2, wherein the sleeve is in the shape of a truncated cone with a hole in the middle, and the cross-sectional area of the end of the sleeve adjacent to the first spring is smaller than the cross-sectional area of the end adjacent to the protrusion.

4. The impact overload warning device according to claim 3, wherein a first through hole is formed in one side, close to the protrusion, of the upper cover assembly, and the central axis of the first through hole is parallel to the central axis of the guide shaft and corresponds to the end face of the end, with the larger cross section, of the sleeve.

5. The impact overload warning device according to claim 4, wherein the upper cover assembly comprises an upper cover, and an upper gasket and a lower gasket which are positioned in the upper cover, the upper gasket and the lower gasket are both in threaded connection with the inner wall of the upper cover, the upper gasket is positioned above the guide shaft, the conducting strip is positioned in an inner hole of the upper gasket, the lower gasket is positioned below the guide shaft, two ends of the guide shaft are both clamped between the upper gasket and the lower gasket, the inner hole of the lower gasket is a stepped hole, one side of the stepped hole, which is close to the lower cover, is a large hole, one end of the mass block, which is provided with the limiting column, is positioned in the large hole, and the first through hole is positioned on the upper cover and close to one side of the protrusion.

6. The impact overload warning device according to claim 5, wherein the upper cover assembly further comprises a transparent cover plate, the cover plate is in a step shape, a second through hole is formed in one side, away from the lower cover, of the upper cover, the cover plate is located above the upper gasket, one end, with a larger cross-sectional area, of the cover plate is clamped between the upper gasket and the top of the inner side of the upper cover, and the other end, with a smaller cross-sectional area, of the cover plate is located in the second through hole.

7. The impact overload warning device according to claim 6, wherein the cover plate is provided with a third through hole and a fourth through hole, the first conductive column is installed in the third through hole, the second conductive column is installed in the fourth through hole, and the upper cover is in threaded connection with the lower cover.

8. The impact overload warning device according to claim 1, wherein a positioning column is arranged at the bottom of the inner side of the lower cover, the first spring is sleeved on the positioning column, a blind hole is formed in an end face of the mass block, which is close to one end of the lower cover, one end of the first spring, which is far away from the lower cover, is located in the blind hole, two ends of the first spring are respectively connected with the bottom of the inner side of the lower cover and the top of the blind hole, and the first spring is used for jacking up the mass block.

9. The impact overload warning device of claim 1, wherein the conductive sheet has a bent portion at an end thereof located under the second conductive post, and the bent portion is bent in a direction approaching the second conductive post.

10. The impact overload warning apparatus according to any one of claims 1 to 9, wherein a collision plate is provided under the lower cover, and the collision plate is detachably connected to the lower cover by screws.