Large movable earthquake alarm device for open area

Abstract

The invention discloses a large movable earthquake alarm device for an open area, and relates to the technical field of earthquake alarms, the large movable earthquake alarm device comprises a fixed base, a height adjusting mechanism is installed on the top surface of the fixed base, the inner side of the top end of the height adjusting mechanism is connected with a rotating sphere, and the bottom of the rotating sphere is fixedly connected with a vertical wire. And a counterweight cone is fixedly mounted at the bottom end of the vertical wire. Vibration generated by an earthquake drives the device to vibrate synchronously, the rotating sphere, the vertical wire and the balance weight cone are in a vertical state all the time, then electric energy is transmitted to trigger alarm work through connection of the vertical wire and the conduction alarm mechanism, and the sensitivity of earthquake alarm is effectively improved; and the height of the counterweight cone can be adjusted through the arrangement of the height adjusting mechanism, so that the contact height between the conduction alarm mechanism and the vertical wire is controlled, and the sensitivity of the earthquake alarm is conveniently adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of earthquake alarms, and in particular to a large-scale movable earthquake alarm device for open areas. Background Art

[0002] With the frequent occurrence of global earthquake activities, earthquake early warning and alarm systems play a vital role in protecting people's lives and property. In various environments, open areas have special needs for earthquake alarm devices due to their unique geographical and usage characteristics.

[0003] However, the existing earthquake alarm device still has certain defects when in use;

[0004] For example, a simple small household earthquake alarm proposed in application number CN202420707419.X includes an elliptical base, an alarm component is provided on the elliptical base, a protective cover is installed on the elliptical base, a first sensing component and a second sensing component are provided on the elliptical base, an alarm circuit is provided in the elliptical base, the first sensing component and the second sensing component are both connected to the alarm circuit through a reserved hole in the elliptical base, a first tray is connected to the first sensing component, a second tray is connected to the second sensing component, and gravity balls are provided on the first tray and the second tray. When an earthquake occurs, the gravity balls on the first tray and the second tray fall, and the elastic moving contact piece contacts the fixed contact piece to complete the alarm, so that people can discover the earthquake in time and complete evacuation within the optimal escape time. However, in actual use, the following problems still exist:

[0005] 1. This simple small household earthquake alarm uses the falling of a gravity ball to trigger the alarm structure to realize earthquake alarm work. However, the setting of the first tray and the second tray requires that the gravity ball can only fall when the earthquake is strong, which reduces the sensitivity of earthquake sensing. At the same time, the gravity ball will fall and trigger the alarm when it senses a specific vibration force. It is not convenient to adjust the alarm triggering according to the earthquake level, which reduces practicality.

[0006] 2. At the same time, in the process of moving the household's simple small earthquake alarm, the gravity ball is likely to fall and trigger the alarm, which makes it inconvenient to change the position of the household's simple small earthquake alarm and reduces the use effect.

[0007] In view of this, we conducted in-depth research on the above issues, which led to the emergence of this case.

[0008] In response to the above problems, an innovative design was made based on the original large-scale movable earthquake alarm device used in open areas. Summary of the Invention

[0009] The purpose of the present invention is to provide a large-scale movable earthquake alarm device for open areas to solve the problems in the above-mentioned background technology that triggering the alarm requires a large vibration force, it is inconvenient to adjust the alarm trigger according to the earthquake level requirements, and it is easy to cause false triggering during movement.

[0010] To achieve the above-mentioned object, the present invention provides the following technical solution: a large-scale movable earthquake alarm device for use in open areas, comprising a fixed base, a bottom of which is equipped with universal wheels for movement, four sides of which are equipped with movable handles, and a height adjustment mechanism.

[0011] A height adjustment mechanism is mounted on the top surface of the fixed base, wherein a rotating sphere is connected to the inner side of the top of the height adjustment mechanism, a vertical wire is fixedly connected to the bottom of the rotating sphere, and a counterweight cone is fixedly mounted on the bottom end of the vertical wire;

[0012] Conductive alarm mechanism, which makes active contact with the vertical conductor to trigger the alarm;

[0013] Passive lubrication mechanism, which is fixedly installed in the middle of the fixed base and is used to limit the counterweight cone and lubricate the connection between the sleeve and the rotating sphere;

[0014] Fixed guard plates are provided at equal angles on the top surface of the fixed base, and transparent guard plates are fixed between the fixed guard plates.

[0015] Preferably, the height adjustment mechanism includes a limit seat fixedly mounted on the top surface of the fixed base, the limit seat is arranged in a cross-shaped structure, and a transmission screw is rotatably mounted inside the front and rear end limit seats, a first driven screw is rotatably mounted inside the limit seat at the right end, and a second driven screw is rotatably mounted inside the limit seat at the left end, and a rotating wheel is fixedly mounted on the outer ends of the transmission screw, a first bevel gear is mounted on one end of the first driven screw close to the transmission screw, and a second bevel gear is mounted on one end of the second driven screw close to the transmission screw, and an active bevel gear is mounted in the middle of the transmission screw, and the active bevel gear is vertically meshed with the first bevel gear and the second bevel gear.

[0016] Preferably, the height adjustment mechanism also includes a movable base sleeved on both ends of the transmission screw and the outer ring of the first driven screw and the second driven screw, the top of the movable base is rotatably connected to the support rod, the top of the support rod is rotatably installed with a positioning top seat, the inner end of the positioning top seat is fixedly connected to a sleeve, and the sleeve is rotatably connected to the rotating sphere.

[0017] Preferably, the threads at both ends of the transmission screw are opened in opposite directions, and the threads of the first driven screw and the second driven screw are opened in opposite directions.

[0018] The above technical solution makes it easy to adjust the height of the rotating sphere, vertical wire and counterweight cone by adjusting the height adjustment mechanism, and then adjust the contact height of the vertical wire and the conductive alarm mechanism. When the rotating sphere, vertical wire and counterweight cone swing within the same range, the lower the vertical wire is, the lower the contact sensitivity with the conductive alarm mechanism. Conversely, the higher the vertical wire is, the higher the contact sensitivity with the conductive alarm mechanism. This is conducive to effectively adjusting the trigger sensitivity of the large-scale movable earthquake alarm device used in open areas, so that the alarm is only issued when the vibration is large, thereby improving the use effect.

[0019] Preferably, the conductive alarm mechanism includes a connecting wire connected at an equal angle to the outer circle of the top end of the vertical wire, the top end of the connecting wire is fixedly connected to the alarm, the bottom end of the alarm is fixedly installed with a connecting seat, and the bottom end of the connecting seat is fixedly connected to the top end of the positioning top seat.

[0020] Preferably, the conductive alarm mechanism also includes a support frame installed at an equal angle on the top surface of the fixed base, the top of the support frame is fixedly connected to a guide ring, a transmission wire is embedded in the interior of the support frame, the top of the transmission wire is fixedly connected to the guide ring, the bottom end of the transmission wire passes through the fixed base and is connected to a battery, and the battery is fixedly connected to the bottom surface of the fixed base.

[0021] The above-mentioned technical solution facilitates the use of the vertical wire's contact with the conductive alarm mechanism during swinging, so that the conductive alarm mechanism forms a complete power transmission path and triggers the alarm. Compared with the traditional gravity ball alarm triggering method, it is more sensitive and improves the use effect of the large-scale movable earthquake alarm device used in open areas.

[0022] Preferably, the passive lubrication mechanism includes a piston cylinder fixedly installed at the top center of the fixed base, the inner ring of the piston cylinder is installed with a limit strip at equal angles, the inner ring of the piston cylinder and the surface of the limit strip are slidably installed with a piston plate, the top center of the piston plate is fixedly installed with a docking seat, and a reset assembly is connected between the bottom surface of the piston plate and the piston cylinder.

[0023] Preferably, the passive lubrication mechanism also includes a first one-way valve installed at an equal angle at the bottom of the piston cylinder, the liquid inlet end of the first one-way valve is fixedly connected to a connecting pipe, the bottom end of the connecting pipe passes through a fixed base and is connected to an oil storage tank, the oil storage tank is fixedly connected to the bottom surface of the battery, and a second one-way valve is also installed at an equal angle on the bottom of the piston cylinder, the liquid outlet end of the second one-way valve is fixedly connected to a delivery pipe, the delivery pipe is embedded in the inside of the support rod, the top end of the delivery pipe is fixedly connected to a diversion pipe, the top end of the diversion pipe is fixedly connected to a nozzle, and the nozzle is embedded in the inside of the sleeve.

[0024] The above technical solution makes it easy to adjust the height of the counterweight cone through the height adjustment mechanism, so that when the counterweight cone contacts the passive lubrication mechanism, the passive lubrication mechanism can effectively limit the counterweight cone to avoid triggering the alarm during the movement. At the same time, the gravity of the counterweight cone can be used to drive the passive lubrication mechanism to lubricate the connection between the sleeve and the rotating sphere, thereby improving the lubrication initiative and functionality of the large-scale movable earthquake alarm device used in open areas.

[0025] Preferably, the bottom end of the fixed guard plate is fixedly connected to the top surface of the fixed base.

[0026] The above technical solution makes it easier for the fixed guard plate and the transparent guard plate to wrap around the internal structure for protection, thereby preventing the false triggering of the alarm due to external wind factors, thereby improving the protection effect.

[0027] Preferably, a locking docking mechanism is connected between the bottom end of the fixed guard plate and the fixed base, and the locking docking mechanism includes a locking groove opened at the bottom of the fixed guard plate, a positioning plate is installed at equal angles on the top surface of the fixed base, a movable rod slides through the interior of the positioning plate, the outer ring of the movable rod is fixedly connected to a baffle, a pull ring is fixedly installed on the outside of the baffle, a connecting plate is fixedly installed on the inner end of the movable rod, a spring is provided on the outer ring of the movable rod between the connecting plate and the positioning plate, a clamping block is fixedly installed on the inner side of the connecting plate, and the clamping block is movably locked in the locking groove.

[0028] The above technical solution makes it easy to disassemble and assemble the fixed guard plate and the transparent guard plate using the snap-fitting docking mechanism, which is conducive to convenient maintenance of the internal components after disassembly, thereby improving the internal maintenance convenience of the large-scale movable earthquake alarm device used in open areas.

[0029] Preferably, a lifting support mechanism for stable placement is installed at the bottom of the moving handle, and the lifting support mechanism includes a fixed plate fixedly installed at the bottom of the moving handle, and the two ends of the fixed plate slide internally through the limit plate, and the bottom end of the limit plate is fixedly connected to the base plate, and the middle thread of the fixed plate passes through an adjusting screw, and the bottom end of the adjusting screw is rotatably connected to the base plate.

[0030] The above technical solution facilitates lifting and adjusting through the lifting support mechanism, which is beneficial for contacting the ground after descending, thereby providing stable support for the entire device and improving stability. It is also beneficial for controlling the rise during movement to avoid affecting normal movement.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: the large-scale movable earthquake alarm device for open areas drives the device to vibrate synchronously through the vibration generated by the earthquake, and the rotating sphere, vertical wire and counterweight cone are always in a vertical state, and then the vertical wire is connected to the conductive alarm mechanism to transmit electric energy to trigger the alarm, which effectively improves the sensitivity of the earthquake alarm, and the setting of the height adjustment mechanism can adjust the height of the counterweight cone, thereby controlling the contact height between the conductive alarm mechanism and the vertical wire, so as to adjust the sensitivity of the earthquake alarm. The specific contents are as follows:

[0032] 1. The height adjustment mechanism can adjust the height of the rotating sphere, vertical wire, and counterweight cone. The relative swing range of the vertical wire and the counterweight cone varies at different earthquake levels. Therefore, when the height of the vertical wire and the counterweight cone are adjusted, the contact height between the conductive alarm mechanism and the vertical wire during the swing process can be made different. As a result, the lower the vertical wire is, the lower the sensitivity of the alarm trigger is. Conversely, the higher the vertical wire is, the higher the sensitivity is. This improves the practicality of this large-scale mobile earthquake alarm device for open areas.

[0033] 2. When the conductive alarm mechanism contacts the swinging vertical wire, it can form a complete power transmission channel, thereby realizing the alarm operation. Compared with the traditional gravity ball triggering alarm method, it is more sensitive and improves the use effect of this large-scale mobile earthquake alarm device used in open areas.

[0034] 3. The height adjustment mechanism can also adjust the counterweight cone to descend to contact with the passive lubrication mechanism. At this time, the passive lubrication mechanism can not only limit the counterweight cone to prevent false triggering during movement, but also use the gravity generated by the counterweight cone to drive the passive lubrication mechanism to achieve lubrication of the connection between the rotating sphere and the sleeve, thereby improving functionality and use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the appearance structure of an embodiment of the present invention from a side view;

[0036] Figure 2 This is a schematic diagram of the bottom structure of the fixed base of the present invention;

[0037] Figure 3 This is a schematic diagram of the distribution structure of the height adjustment mechanism and the conduction alarm mechanism of the present invention;

[0038] Figure 4 This is a schematic diagram of the connection structure between the sleeve and the rotating sphere in a side section of the present invention;

[0039] Figure 5 It is a partial structural diagram of the height adjustment mechanism of the present invention;

[0040] Figure 6 This is a partial structural diagram of the conduction alarm mechanism of the present invention;

[0041] Figure 7 This is a side structural diagram of the passive lubrication mechanism of the present invention;

[0042] Figure 8 It is a schematic side cross-sectional view of the passive lubrication mechanism of the present invention;

[0043] Figure 9 This is a schematic diagram of the exploded structure of the second embodiment of the present invention from a side view;

[0044] Figure 10 It is a schematic side cross-sectional view of the engaging and docking mechanism of the present invention;

[0045] Figure 11 It is a schematic diagram of the distribution structure of the lifting support mechanism of the present invention.

[0046] In the figure: 1. Fixed base; 2. Universal wheel; 3. Moving handle; 4. Limit seat; 5. Transmission screw; 6. First driven screw; 7. Second driven screw; 8. First bevel gear; 9. Second bevel gear; 10. Active bevel gear; 11. Rotating wheel; 12. Movable base; 13. Support rod; 14. Positioning top seat; 15. Sleeve; 16. Rotating sphere; 17. Vertical wire; 18. Counterweight cone; 19. Connecting wire; 20. Alarm; 21. Connecting seat; 22. Support frame; 23. Guide ring; 24. Transmission wire; 25. Storage battery Pool; 26. Piston cylinder; 27. Limit strip; 28. Piston plate; 29. Docking seat; 30. First one-way valve; 31. Connecting pipe; 32. Oil storage tank; 33. Second one-way valve; 34. Delivery pipe; 35. Diverter pipe; 36. Nozzle; 37. Fixed guard plate; 38. Transparent guard plate; 39. Engaging groove; 40. Positioning plate; 41. Movable rod; 42. Baffle; 43. Pull ring; 44. Connecting plate; 45. Spring; 46. Block; 47. Reset assembly; 48. Fixed plate; 49. Limit plate; 50. Bottom plate; 51. Adjusting screw. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0048] Example 1: Please refer to Figure 1 - Figure 8The present invention provides a technical solution: a large-scale movable earthquake alarm device for open areas, comprising a fixed base 1, a universal wheel 2 for movement is installed at the bottom of the fixed base 1, a movable handle 3 is installed on the four sides of the fixed base 1, and also comprises a height adjustment mechanism, which is installed on the top surface of the fixed base 1, and the inner side of the top of the height adjustment mechanism is connected with a rotating sphere 16, and the bottom of the rotating sphere 16 is fixedly connected with a vertical wire 17, and the bottom end of the vertical wire 17 is fixedly installed with a counterweight cone 18. The height adjustment mechanism comprises a limit seat 4 fixedly installed on the top surface of the fixed base 1, the limit seat 4 is arranged in a cross-shaped structure, and a transmission screw 5 is rotatably installed inside the front and rear end limit seats 4, and the threads at both ends of the transmission screw 5 are opened in opposite directions, and the first driven screw 6 is rotatably installed inside the right end limit seat 4, and the second driven screw 6 is rotatably installed inside the left end limit seat 4. Two driven screw rods 7, the threads of the first driven screw rod 6 and the second driven screw rod 7 are opened in opposite directions, and the outer ends of the transmission screw rod 5, the first driven screw rod 6 and the second driven screw rod 7 are fixedly mounted with a runner 11, the first driven screw rod 6 is mounted on the end close to the transmission screw rod 5 of the first driven screw rod 6, and the second bevel gear 9 is mounted on the end close to the transmission screw rod 5 of the second driven screw rod 7. A driving bevel gear 10 is mounted in the middle of the transmission screw rod 5, and the driving bevel gear 10 is vertically meshed with the first bevel gear 8 and the second bevel gear 9. The height adjustment mechanism also includes a movable base 12 sleeved on both ends of the transmission screw rod 5 and the outer ring of the first driven screw rod 6 and the second driven screw rod 7. The top end of the movable base 12 is rotatably connected to a support rod 13, and the top end of the support rod 13 is rotatably mounted with a positioning top seat 14. The inner end of the positioning top seat 14 is fixedly connected to a sleeve seat 15, and the sleeve seat 15 is rotatably connected to a rotating sphere 16;

[0049] The design of the above structure enables the rotation of any rotating wheel 11 to drive its corresponding transmission screw 5 or the first driven screw 6 or the second driven screw 7 to rotate, and then the meshing transmission structure composed of the first bevel gear 8, the second bevel gear 9 and the active bevel gear 10 to drive the remaining transmission screws 5 or the first driven screw 6 or the second driven screw 7 to rotate, so that the transmission screw 5, the first driven screw 6 and the second driven screw 7 can rotate synchronously, and then the threaded opening on the transmission screw 5, the first driven screw 6 and the second driven screw 7 is used to drive the corresponding movable base 12 to slide synchronously toward and in the opposite direction inside the limit seat 4, and then the movement of the movable base 12 will drive the support rod 13 to adjust the tilt angle, and drive the positioning top seat 14 and the sleeve seat 15 to rise and fall, and can also drive the rotating sphere 16, the vertical wire 17 and the counterweight cone 18 to rise and fall, so as to adjust the contact height of the vertical wire 17 with the conductive alarm mechanism when it swings, thereby realizing the adjustment of the trigger sensitivity.

[0050] The conductive alarm mechanism is in active contact with the vertical wire 17 to trigger the alarm. The conductive alarm mechanism includes a connecting wire 19 connected at an equal angle to the outer ring of the top end of the vertical wire 17. The top end of the connecting wire 19 is fixedly connected to an alarm 20. The bottom end of the alarm 20 is fixedly installed with a connecting seat 21. The bottom end of the connecting seat 21 is fixedly connected to the top of the positioning top seat 14. The conductive alarm mechanism also includes a support frame 22 installed at an equal angle to the top surface of the fixed base 1. The top end of the support frame 22 is fixedly connected to a guide ring 23. A transmission wire 24 is embedded in the support frame 22. The top end of the transmission wire 24 is fixedly connected to the guide ring 23. The bottom end of the transmission wire 24 passes through the fixed base 1 and is connected to a battery 25. The battery 25 is fixedly connected to the bottom surface of the fixed base 1.

[0051] The design of the above structure causes the device to shake synchronously when an earthquake occurs, and the setting of the counterweight cone 18 can drive the vertical wire 17 and the rotating sphere 16 to always remain in a vertical state, and the rotating sphere 16 can rotate inside the sleeve 15 to maintain a vertical state. As the device shakes, the vertical wire 17 will contact the guide ring 23, and during the contact process, a complete power transmission path can be formed between the connecting wire 19, the vertical wire 17, the guide ring 23 and the transmission wire 24. At this time, the battery 25 can power the alarm 20, so that the alarm 20 can realize the alarm work during the earthquake. The setting of the support frame 22 can firmly support the guide ring 23 and effectively protect the transmission wire 24.

[0052] The passive lubrication mechanism is fixedly mounted in the middle of the fixed base 1 and is used to limit the counterweight cone 18 and lubricate the connection between the sleeve 15 and the rotating sphere 16. The passive lubrication mechanism includes a piston cylinder 26 fixedly mounted at the top center of the fixed base 1, and a limit strip 27 is installed at equal angles on the inner ring of the piston cylinder 26. A piston plate 28 is slidably mounted on the surface of the inner ring of the piston cylinder 26 and the limit strip 27. A docking seat 29 is fixedly mounted on the top center of the piston plate 28. A reset assembly 47 is connected between the bottom surface of the piston plate 28 and the piston cylinder 26. The passive lubrication mechanism also includes a piston cylinder 26 fixedly mounted at equal angles. A first one-way valve 30 is provided at the bottom of the cylinder 26. The liquid inlet end of the first one-way valve 30 is fixedly connected to a connecting pipe 31. The bottom end of the connecting pipe 31 passes through the fixed base 1 and is connected to an oil storage tank 32. The oil storage tank 32 is fixedly connected to the bottom surface of the battery 25. A second one-way valve 33 is also installed at an equal angle at the bottom of the piston cylinder 26. The liquid outlet end of the second one-way valve 33 is fixedly connected to a delivery pipe 34. The delivery pipe 34 is embedded in the interior of the support rod 13. The top end of the delivery pipe 34 is fixedly connected to a diverter pipe 35. The top end of the diverter pipe 35 is fixedly connected to a nozzle 36. The nozzle 36 is embedded in the interior of the sleeve 15.

[0053] The design of the above structure enables the counterweight cone 18 to be adjusted to contact the docking seat 29 through the height adjustment mechanism, and the docking seat 29 can limit the counterweight cone 18, thereby avoiding the counterweight cone 18 from shaking and causing false triggering during the movement of the device. As the counterweight cone 18 continues to descend, its own gravity will squeeze the docking seat 29 and the piston plate 28 downward, and then the lubricating oil at the bottom of the piston cylinder 26 will be sprayed out through the second one-way valve 33, the delivery pipe 34, the diverter pipe 35 and the nozzle 36 to achieve lubrication of the connection between the sleeve 15 and the rotating sphere 16. When the counterweight cone 18 rises, the reset assembly 47 will push the piston plate 28 to rise and reset, and then the lubricating oil inside the oil tank 32 can be extracted through the first one-way valve 30 and the connecting pipe 31 and stored at the bottom of the piston cylinder 26 for re-lubrication.

[0054] The bottom end of the fixed guard plate 37 is fixedly connected to the top surface of the fixed base 1;

[0055] The design of the above structure enables the fixed guard plate 37 and the transparent guard plate 38 to effectively protect the internal structure when they are fixedly connected to the fixed base 1, and at the same time prevent the counterweight cone 18 from shaking due to external wind factors, thereby improving the protection effect and earthquake sensing accuracy of the large-scale movable earthquake alarm device used in open areas.

[0056] Example 2: Based on Example 1, the present invention adopts Figure 9 - Figure 10 In the technical solution shown, a snap-fitting docking mechanism is connected between the bottom end of the fixed guard plate 37 and the fixed base 1. The snap-fitting docking mechanism includes a snap-fitting groove 39 provided at the bottom of the fixed guard plate 37. A positioning plate 40 is installed at equal angles on the top surface of the fixed base 1. A movable rod 41 slides through the interior of the positioning plate 40. A baffle 42 is fixedly connected to the outer ring of the movable rod 41. A pull ring 43 is fixedly installed on the outer side of the baffle 42. A connecting plate 44 is fixedly installed on the inner end of the movable rod 41. A spring 45 is sleeved on the outer ring of the movable rod 41 between the connecting plate 44 and the positioning plate 40. A clamping block 46 is fixedly installed on the inner side of the connecting plate 44. The clamping block 46 is movably snap-fitted and connected with the snap-fitting groove 39.

[0057] The design of the above structure enables the movable rod 41 to slide inside the positioning plate 40 by pulling the pull ring 43 and pushing the connecting plate 44 to reset by the spring 45, thereby driving the connecting plate 44 and the block 46 to extend and retract, and controlling the engagement between the block 46 and the engagement groove 39, which is beneficial for positioning and installing the fixed guard plate 37 and the transparent guard plate 38 to achieve protection when engaged, and is also beneficial for disassembling the fixed guard plate 37 and the transparent guard plate 38 when separated, so as to facilitate convenient maintenance of the internal components, wherein the setting of the baffle 42 can limit the extension and retraction distance of the movable rod 41.

[0058] Example 3: Based on Example 1 and Example 2, the present invention adopts Figure 11 In the technical solution shown, a lifting support mechanism for stable placement is installed at the bottom of the mobile handle 3. The lifting support mechanism includes a fixed plate 48 fixedly installed at the bottom of the mobile handle 3. The two ends of the fixed plate 48 slide through the limit plates 49. The bottom end of the limit plate 49 is fixedly connected to the bottom plate 50. The middle part of the fixed plate 48 is threaded with an adjusting screw 51. The bottom end of the adjusting screw 51 is rotatably connected to the bottom plate 50.

[0059] The design of the above structure allows the earthquake alarm device to rise in the middle of the fixed plate 48 by rotating the adjusting screw 51 during the movement of the device, and the bottom plate 50 can be driven to rise stably by the rotational connection between the bottom end and the base plate 50 and the sliding of the limit plate 49 inside the fixed plate 48, so that the base plate 50 is separated from the ground so that it can be conveniently moved using the universal wheel 2. When it moves to the appropriate position, the base plate 50 is driven to descend by the reverse rotation of the adjusting screw 51 and the limiting of the limit plate 49 until the base plate 50 contacts the ground to provide stable support for the entire device and ensure stability.

[0060] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A large movable earthquake alarm device for use in open areas, comprising a fixed base (1), a bottom of the fixed base (1) being provided with universal wheels (2) for movement, and four sides of the fixed base (1) being provided with movable handles (3), characterized in that: Also includes a height adjustment mechanism, A height adjustment mechanism is mounted on the top surface of the fixed base (1), wherein the inner side of the top of the height adjustment mechanism is connected to a rotating sphere (16), the bottom of the rotating sphere (16) is fixedly connected to a vertical wire (17), and the bottom end of the vertical wire (17) is fixedly mounted with a counterweight cone (18); A conductive alarm mechanism, which is in active contact with the vertical conductor (17) to trigger the alarm; A passive lubrication mechanism is fixedly mounted in the middle of the fixed base (1) and is used to limit the counterweight cone (18) and lubricate the connection between the sleeve (15) and the rotating sphere (16); Fixed guard plates (37) are provided at equal angles on the top surface of the fixed base (1), and transparent guard plates (38) are fixed between the fixed guard plates (37).

2. A large-scale movable earthquake alarm device for use in open areas according to claim 1, characterized in that: The height adjustment mechanism comprises a limit seat (4) fixedly mounted on the top surface of the fixed base (1), the limit seat (4) being arranged in a cross-shaped structure, a transmission screw (5) being rotatably mounted inside the front and rear end limit seats (4), a first driven screw (6) being rotatably mounted inside the right end limit seat (4), and a second driven screw (7) being rotatably mounted inside the left end limit seat (4), a rotating wheel (11) being fixedly mounted on the outer ends of the transmission screw (5), the first driven screw (6) and the second driven screw (7), a first bevel gear (8) being mounted on the end of the first driven screw (6) close to the transmission screw (5), a second bevel gear (9) being mounted on the end of the second driven screw (7) close to the transmission screw (5), a driving bevel gear (10) being mounted in the middle of the transmission screw (5), and the driving bevel gear (10) being vertically meshed with the first bevel gear (8) and the second bevel gear (9).

3. A large-scale movable earthquake alarm device for use in open areas according to claim 2, characterized in that: The height adjustment mechanism also includes a movable base (12) sleeved on both ends of the transmission screw (5) and the outer rings of the first driven screw (6) and the second driven screw (7), the top end of the movable base (12) is rotatably connected to a support rod (13), the top end of the support rod (13) is rotatably mounted with a positioning top seat (14), the inner end of the positioning top seat (14) is fixedly connected to a sleeve seat (15), and the sleeve seat (15) is rotatably connected to a rotating sphere (16); The threads at both ends of the transmission screw (5) are opened in opposite directions, and the threads of the first driven screw (6) and the second driven screw (7) are opened in opposite directions.

4. A large-scale movable earthquake alarm device for use in open areas according to claim 3, characterized in that: The conductive alarm mechanism comprises a connecting wire (19) connected to the outer ring of the top end of the vertical wire (17) at an equal angle, the top end of the connecting wire (19) is fixedly connected to an alarm (20), the bottom end of the alarm (20) is fixedly installed with a connecting seat (21), and the bottom end of the connecting seat (21) is fixedly connected to the top end of the positioning top seat (14).

5. A large-scale movable earthquake alarm device for use in open areas according to claim 4, characterized in that: The conductive alarm mechanism further comprises a support frame (22) mounted at an equal angle on the top surface of the fixed base (1), the top end of the support frame (22) being fixedly connected to a guide ring (23), a transmission wire (24) being embedded and mounted inside the support frame (22), the top end of the transmission wire (24) being fixedly connected to the guide ring (23), the bottom end of the transmission wire (24) passing through the fixed base (1) and being connected to a storage battery (25), and the storage battery (25) being fixedly connected to the bottom surface of the fixed base (1).

6. A large-scale movable earthquake alarm device for use in open areas according to claim 5, characterized in that: The passive lubrication mechanism comprises a piston cylinder (26) fixedly mounted on the top center of a fixed base (1); a limit strip (27) is mounted at equal angles on the inner ring of the piston cylinder (26); a piston plate (28) is slidably mounted on the surface of the inner ring of the piston cylinder (26) and the limit strip (27); a docking seat (29) is fixedly mounted on the center of the top surface of the piston plate (28); and a reset assembly (47) is connected between the bottom surface of the piston plate (28) and the piston cylinder (26).

7. A large-scale movable earthquake alarm device for use in open areas according to claim 6, characterized in that: The passive lubrication mechanism further comprises a first one-way valve (30) mounted at an equal angle on the bottom of the piston cylinder (26); a liquid inlet end of the first one-way valve (30) is fixedly connected to a connecting pipe (31); the bottom end of the connecting pipe (31) passes through the fixed base (1) and is connected to an oil storage tank (32); the oil storage tank (32) is fixedly connected to the bottom surface of the battery (25); a second one-way valve (33) is also mounted at an equal angle on the bottom of the piston cylinder (26); a liquid outlet end of the second one-way valve (33) is fixedly connected to a delivery pipe (34); the delivery pipe (34) is embedded in the interior of the support rod (13); the top end of the delivery pipe (34) is fixedly connected to a diverter pipe (35); the top end of the diverter pipe (35) is fixedly connected to a nozzle (36); the nozzle (36) is embedded in the interior of the sleeve (15).

8. The large-scale movable earthquake alarm device for use in open areas according to claim 1, characterized in that: The bottom end of the fixed guard plate (37) is fixedly connected to the top surface of the fixed base (1).

9. The large-scale movable earthquake alarm device for use in open areas according to claim 1, characterized in that: A snap-fitting docking mechanism is connected between the bottom end of the fixed guard plate (37) and the fixed base (1), and the snap-fitting docking mechanism includes a snap-fitting groove (39) provided at the bottom of the fixed guard plate (37). A positioning plate (40) is installed at an equal angle on the top surface of the fixed base (1). A movable rod (41) is slidably passed through the interior of the positioning plate (40). The outer ring of the movable rod (41) is fixedly connected to a baffle (42). A pull ring (43) is fixedly installed on the outer side of the baffle (42). A connecting plate (44) is fixedly installed on the inner end of the movable rod (41). A spring (45) is sleeved on the outer ring of the movable rod (41) between the connecting plate (44) and the positioning plate (40). A clamping block (46) is fixedly installed on the inner side of the connecting plate (44), and the clamping block (46) is movably snap-fitted with the snap-fitting groove (39).

10. The large-scale movable earthquake alarm device for use in open areas according to claim 1, characterized in that: The bottom of the movable handle (3) is provided with a lifting support mechanism for stable placement, and the lifting support mechanism comprises a fixed plate (48) fixedly installed at the bottom of the movable handle (3), the two ends of the fixed plate (48) are internally slidably penetrated by a limit plate (49), the bottom end of the limit plate (49) is fixedly connected to a base plate (50), the middle part of the fixed plate (48) is threadedly penetrated by an adjusting screw (51), and the bottom end of the adjusting screw (51) is rotatably connected to the base plate (50).

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