Alarm device for building security and protection

Abstract

The invention relates to the technical field of security alarm devices, and discloses an alarm device for building security, which comprises a mounting plate, a smoke sensor and an alarm main body, a lower shooting machine and an upper shooting machine are sequentially mounted above the mounting plate, and a vertical plate is fixedly connected to one side of the bottom of the mounting plate; a transverse plate is fixedly connected between the vertical plate and the fixing plate, an adjusting mechanism is arranged on one side of the top of the mounting plate, and an auxiliary mechanism is arranged on the other side of the top of the mounting plate. The adjusting mechanism comprises a reciprocating motor fixedly installed on one side of the bottom of the transverse plate, and a speed reducer is fixedly installed on one side of the top of the transverse plate. The auxiliary mechanism comprises a connecting shaft and an adjusting sleeve, the adjusting sleeve is in threaded connection with the connecting shaft, and the problems that multi-angle adjustment monitoring is inconvenient, so that the security monitoring angle has a dead angle, the monitoring range is small, the use flexibility is not high, dust is likely to adhere to a camera part, and the security monitoring alarm effect is affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of security alarm devices, in particular to an alarm device used for building security. Background Art

[0002] The security alarm device is part of the building. When a fire occurs in a residential building, the security alarm device can sound the alarm immediately to remind rescue workers and residents to evacuate in time to reduce losses. The existing security alarm device is not convenient for multi-angle adjustment and monitoring, which results in blind spots in security monitoring, a small monitoring range, general monitoring effects, and low flexibility of use.

[0003] For example, a security alarm device suitable for intelligent buildings with announcement number CN216211411U includes a first installation box and a second installation box, a plastic protective shell is fixedly installed on one side of the first installation box, a push-type switch is arranged inside the plastic protective shell, a micro motor is fixedly installed on one side of the second installation box, and the micro motor is fixedly installed with a fixed rod through a rotating shaft at the output end. In the event of an emergency fire, the discoverer can smash the plastic protective shell and then press the push-type switch to energize the micro motor, and then the micro motor drives the fixed rod and the knocking hammer to rotate through the rotating shaft at the output end, and the knocking hammer is used to continuously knock the gong to make a loud sound, and then the loud sound can be used to remind the residents to evacuate, and two sets of movable shafts and gongs are arranged to make the sound louder. However, the security device is not convenient for multi-angle adjustment and monitoring, so that there are blind spots in the security monitoring angle, the monitoring range is small, the flexibility of use is not high, and the camera part is prone to dust adhesion, which affects the security monitoring alarm effect.

[0004] Therefore, an alarm device for building security is proposed to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an alarm device for building security, so as to solve the problem that it is inconvenient to adjust and monitor at multiple angles, resulting in blind spots in security monitoring, a small monitoring range, low flexibility of use, and dust easily sticking to the camera part, thus affecting the security monitoring alarm effect.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an alarm device for building security, comprising a mounting plate, a smoke sensor and an alarm body, one side of the mounting plate is fixedly connected with a fixing plate, the interior of the fixing plate is laterally fixedly installed with bolts, a lower camera and an upper camera are sequentially installed above the mounting plate, and a battery unit is fixedly installed on one side of the top of the mounting plate close to the fixing plate;

[0007] Also includes:

[0008] A vertical plate is fixedly connected to one side of the bottom of the mounting plate, a horizontal plate is fixedly connected between the vertical plate and the fixed plate, an adjustment mechanism is provided on one side of the top of the mounting plate, and an auxiliary mechanism is provided on the other side of the top of the mounting plate;

[0009] The smoke sensor is fixedly mounted on one side of the bottom of the mounting plate, the smoke sensor is located on the side of the vertical plate away from the fixing plate, and the alarm body is fixedly mounted on the side of the vertical plate close to the smoke sensor;

[0010] The adjustment mechanism comprises a reciprocating motor fixedly mounted on one side of the bottom of the horizontal plate, a reducer fixedly mounted on one side of the top of the horizontal plate, an output end of the reciprocating motor is connected to an inlet end of the reducer, an outlet end of the reducer is fixedly connected to a rotating shaft, an outer side of the rotating shaft is fixedly connected to a main pulley, and an outer side of the main pulley is sleeved with a belt portion;

[0011] A driven shaft is rotatably connected to the other side of the top of the transverse plate, a slave pulley is fixedly connected to the outer side of the middle part of the driven shaft, the slave pulley is adaptively connected to the belt part, a rotating member is fixedly connected to the top of the driven shaft, the rotating member is fixedly connected to the upper shaft through the mounting plate, a connecting plate is symmetrically rotatably mounted on the outer side of the upper shaft, two groups of connecting plates are provided, and each group of connecting plates includes two symmetrically arranged;

[0012] The two upper connecting plates are fixedly installed with the upper camera, and the two lower connecting plates are fixedly installed with the lower camera. One end of the connecting plate away from the lower camera or the upper camera is fixedly connected with an abutment block. A spring 1 is fixedly installed at the bottom of the lower camera. The bottom end of the spring 1 is connected with a mounting tube, and the mounting tube is rotatably connected with the mounting plate.

[0013] The top of the upper shaft is fixedly connected with an upper strip plate, a second spring is fixedly installed between the upper camera and the upper strip plate, and a cleaning strip plate is symmetrically fixedly installed on the top of the mounting plate;

[0014] The auxiliary mechanism includes a connecting shaft and an adjusting sleeve. The top of the output end of the reciprocating motor passes through the reducer and is fixedly connected to the bottom of the connecting shaft. The adjusting sleeve is threadedly connected to the connecting shaft. A push plate is fixedly connected to one side of the adjusting sleeve, and a push block is installed on the outer side of the push plate.

[0015] Preferably, the rotating shaft is located between the mounting plate and the transverse plate, the top end of the rotating shaft is rotatably connected to the bottom end of the mounting plate, and the belt portion is located between the mounting plate and the transverse plate.

[0016] By adopting the above technical solution, the monitoring range of the lower camera and the upper camera is expanded, avoiding the limitation of single-position monitoring.

[0017] Preferably, the rotating member is rotatably connected to the mounting plate, the upper shaft is located above the mounting plate, and the abutment block is located on a side of the upper shaft away from the lower camera.

[0018] By adopting the above technical solution, when the pushing block squeezes the abutting block, the abutting block drives the connecting plate to rotate on the upper shaft, and the upper and lower connecting plates respectively drive the upper camera and the lower camera to rotate vertically.

[0019] Preferably, an arc groove and an inner groove are provided on the top of the mounting plate, the top of the inner groove is connected to the bottom of the arc groove, the inner groove is connected to the outside of the mounting plate, and the arc groove and the inner groove are both arranged in an arc shape.

[0020] By adopting the above technical solution, when the lower camera rotates, the spring can drive the mounting tube to rotate, the mounting tube rotates inside the arc groove, and the limiting block limits the mounting tube.

[0021] Preferably, the spring 1 is slidably connected to the mounting tube, the bottom end of the spring 1 is fixedly connected to the inner bottom surface of the mounting tube, the bottom of the mounting tube is fixedly connected to a limiting block, the mounting tube is slidably connected to the arc groove, and the limiting block is slidably connected to the inner groove.

[0022] By adopting the above technical solution, the limiting block rotates inside the inner groove to prevent the installation tube from falling out.

[0023] Preferably, the second spring is located on a side of the upper strip away from the upper axis, the top end of the second spring is fixedly connected to a bottom side of the upper strip, and the bottom end of the second spring is fixedly connected to the top of the upper camera.

[0024] By adopting the above technical solution, the upper connecting plate drives the upper camera to rotate vertically. When the connecting shaft is reversed, the adjusting sleeve drops vertically, and the elastic force of the second spring drives the upper camera to rotate and reset.

[0025] Preferably, two cleaning strips are symmetrically arranged, and the cleaning strips are located on the arc-shaped rotation trajectory of the lower camera and the upper camera, and there is a height difference between the cleaning strips on both sides, so that the cleaning strip on one side is used to clean the lower camera, and the cleaning strip on the other side is used to clean the upper camera.

[0026] By adopting the above technical solution, the cleaning strips on both sides make it easy to clean the lower camera and the upper camera respectively, so that there is always one in working condition.

[0027] Preferably, an external thread is provided on the outer side of the upper part of the connecting shaft, and an internal thread is provided on the inner side of the adjusting sleeve, the external thread is adaptably connected to the internal thread, and the pushing plate is provided with two parallel ones, and the pushing block is fixedly connected to the side of the pushing plate away from the adjusting sleeve, and the two pushing blocks are respectively abutted against the bottom of the upper and lower abutting blocks.

[0028] By adopting the above technical solution, when the connecting shaft rotates forward, the connecting shaft drives the adjusting sleeve to rise vertically, the adjusting sleeve drives the pushing plate and the limiting rod to rise, and the pushing plate drives the pushing block to rise, which facilitates the vertical rotation of the lower camera and the upper camera.

[0029] Preferably, the bottoms of the two pushing plates are fixedly connected with a same limiting rod, a hole groove is penetrated through the interior of the mounting plate, and the limiting rod is slidably connected with the hole groove.

[0030] By adopting the above technical solution, the limiting rod slides inside the mounting plate to limit the adjusting sleeve and the pushing plate.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: an adjustment mechanism and an auxiliary mechanism are provided to realize synchronous horizontal rotation and vertical rotation of the lower camera and the upper camera, further improving the security monitoring range of the lower camera and the upper camera, thereby expanding the monitoring range of the lower camera and the upper camera, avoiding the limitation of single-position monitoring, and the cleaning strip scrapes and cleans the lens parts of the lower camera and the upper camera, thereby reducing dust adhesion on the lens parts of the lower camera and the upper camera;

[0032] 1. An adjusting mechanism is provided. By starting the reciprocating motor to rotate reciprocatingly, the reciprocating motor drives the rotating shaft to rotate through the reducer, and the speed of the rotating shaft is slowed down by the reducer, the rotating shaft drives the main pulley to rotate, the main pulley can drive the slave pulley and the driven shaft to rotate through the belt part, the driven shaft drives the rotating member and the upper shaft to rotate, the upper shaft drives the connecting plate to rotate, and the upper and lower connecting plates respectively drive the upper camera and the lower camera to rotate horizontally, so that the monitoring range of the lower camera and the upper camera is expanded, avoiding the limitation of single-position monitoring, when the lower camera rotates, the installation cylinder can be driven to rotate by the spring, the installation cylinder rotates inside the arc groove, the limit block limits the installation cylinder, the limit block rotates inside the inner groove, and is used to prevent the installation cylinder from falling out, and when the lower camera and the upper camera rotate to the position of the cleaning strip plate, the cleaning strip plate scrapes and cleans the lens parts of the lower camera and the upper camera, reducing the dust adhesion on the lens parts of the lower camera and the upper camera, and improving the security monitoring effect, the smoke sensor is used for smoke detection, and the alarm body is used for buzzer alarm;

[0033] 2. An auxiliary mechanism is provided. When the reciprocating motor rotates, the output end of the reciprocating motor drives the upper shaft to rotate synchronously through the reducer. The adjusting sleeve is threadedly connected to the connecting shaft. The limit rod limits the pushing plate and the adjusting sleeve, so that when the connecting shaft rotates forward, the connecting shaft drives the adjusting sleeve to rise vertically, the adjusting sleeve drives the pushing plate and the limiting rod to rise, the limiting rod slides inside the mounting plate, the pushing plate drives the pushing block to rise, the pushing block squeezes the abutting block, and the abutting block drives the connecting plate to rotate on the upper shaft. The upper and lower connecting plates respectively drive the upper camera and the lower camera to rotate vertically. When the connecting shaft is reversed, the adjusting sleeve descends vertically, the elastic force of the spring one drives the lower camera to rotate and reset, and the elastic force of the spring two drives the upper camera to rotate and reset, thereby realizing the synchronous horizontal rotation and vertical rotation of the lower camera and the upper camera, further improving the security monitoring range of the lower camera and the upper camera, solving the problem that it is inconvenient to adjust and monitor at multiple angles, resulting in blind spots in the security monitoring angle, a small monitoring range, low flexibility in use, and dust easily adheres to the camera part, affecting the security monitoring alarm effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the first three-dimensional overall structure of the present invention;

[0035] Figure 2 It is a schematic diagram of a second three-dimensional overall structure of the present invention;

[0036] Figure 3 This is a schematic diagram of the cross-sectional structure of the mounting plate of the present invention;

[0037] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0038] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0039] Figure 6 For the present invention Figure 3 The enlarged structural diagram at C in the middle;

[0040] Figure 7 This is a schematic diagram of the installation structure of the abutment block of the present invention;

[0041] Figure 8 For the present invention Figure 7 The enlarged structural diagram at D in the middle;

[0042] Fig. 9 This is a schematic diagram of the installation structure of the cleaning strip board of the present invention;

[0043] Fig.10 This is a schematic diagram of the connecting shaft installation structure of the present invention;

[0044] Fig.11For the present invention Fig.10 Enlarged structural diagram at E in the middle.

[0045] In the figure: 1. mounting plate; 2. fixing plate; 3. vertical plate; 4. horizontal plate; 5. adjusting mechanism; 51. reciprocating motor; 52. speed reducer; 53. rotating shaft; 54. main pulley; 55. belt portion; 56. driven shaft; 57. slave pulley; 58. rotating member; 59. upper shaft; 510. connecting plate; 511. abutment block; 512. arc groove; 513. inner groove; 514. mounting cylinder; 515. limit block; 516. spring 1; 517. upper strip plate; 518. spring 2; 519. cleaning strip plate; 6. auxiliary mechanism; 61. connecting shaft; 62. adjusting sleeve; 63. pushing plate; 64. pushing block; 65. limit rod; 7. lower camera; 8. upper camera; 9. smoke sensor; 10. alarm body; 11. battery portion. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1-Figure 11 The present invention provides a technical solution: an alarm device for building security, including a mounting plate 1, a smoke sensor 9 and an alarm body 10, a fixing plate 2 is fixedly connected to one side of the mounting plate 1, a bolt is transversely fixed inside the fixing plate 2, a lower camera 7 and an upper camera 8 are sequentially installed above the mounting plate 1, and a battery part 11 is fixedly installed on one side of the top of the mounting plate 1 close to the fixing plate 2.

[0048] A vertical plate 3 is fixedly connected to one side of the bottom of the mounting plate 1 , and a horizontal plate 4 is fixedly connected between the vertical plate 3 and the fixing plate 2 .

[0049] The smoke sensor 9 is fixedly mounted on one side of the bottom of the mounting plate 1 . The smoke sensor 9 is located on a side of the vertical plate 3 away from the fixing plate 2 . The alarm body 10 is fixedly mounted on a side of the vertical plate 3 close to the smoke sensor 9 .

[0050] An adjusting mechanism 5 is provided on one side of the top of the mounting plate 1, and the adjusting mechanism 5 includes a reciprocating motor 51 fixedly mounted on one side of the bottom of the transverse plate 4, a reducer 52 is fixedly mounted on one side of the top of the transverse plate 4, an output end of the reciprocating motor 51 is connected to an inlet end of the reducer 52, a rotating shaft 53 is fixedly connected to an outlet end of the reducer 52, a main pulley 54 is fixedly connected to the outer side of the rotating shaft 53, and a belt portion 55 is sleeved on the outer side of the main pulley 54.

[0051] The rotating shaft 53 is located between the mounting plate 1 and the transverse plate 4 , the top end of the rotating shaft 53 is rotatably connected to the bottom end of the mounting plate 1 , and the belt portion 55 is located between the mounting plate 1 and the transverse plate 4 .

[0052] A driven shaft 56 is rotatably connected to the other side of the top of the transverse plate 4, a slave pulley 57 is fixedly connected to the outer middle part of the driven shaft 56, the slave pulley 57 is adaptably connected to the belt portion 55, a rotating member 58 is fixedly connected to the top of the driven shaft 56, the rotating member 58 passes through the mounting plate 1 and is fixedly connected to an upper shaft 59, a connecting plate 510 is symmetrically rotatably mounted on the outer side of the upper shaft 59, and two groups of connecting plates 510 are provided, and each group of connecting plates 510 includes two symmetrically arranged ones.

[0053] The rotating member 58 is rotatably connected to the mounting plate 1 , the upper shaft 59 is located above the mounting plate 1 , and the abutment block 511 is located on a side of the upper shaft 59 away from the lower camera 7 .

[0054] The two upper connecting plates 510 are fixedly installed with the upper camera 8, and the two lower connecting plates 510 are fixedly installed with the lower camera 7. One end of the connecting plate 510 away from the lower camera 7 or the upper camera 8 is fixedly connected with a contact block 511, and a spring 516 is fixedly installed at the bottom of the lower camera 7. The bottom end of the spring 516 is connected with a mounting tube 514, and the mounting tube 514 is rotatably connected to the mounting plate 1.

[0055] An arc groove 512 and an inner groove 513 are provided at the top of the mounting plate 1 . The top of the inner groove 513 is connected to the bottom of the arc groove 512 . The inner groove 513 is connected to the outside of the mounting plate 1 . Both the arc groove 512 and the inner groove 513 are arc-shaped.

[0056] Spring 1 516 is slidably connected to the mounting tube 514, the bottom end of spring 1 516 is fixedly connected to the inner bottom surface of the mounting tube 514, the bottom of the mounting tube 514 is fixedly connected to a limiting block 515, the mounting tube 514 is slidably connected to the arc groove 512, and the limiting block 515 is slidably connected to the inner groove 513.

[0057] The top of the upper shaft 59 is fixedly connected with an upper strip plate 517, a spring 2 518 is fixedly installed between the upper camera 8 and the upper strip plate 517, and a cleaning strip plate 519 is symmetrically fixedly installed on the top of the mounting plate 1.

[0058] Spring 2 518 is located on a side of the upper strip 517 away from the upper shaft 59 , the top end of spring 2 518 is fixedly connected to a bottom side of the upper strip 517 , and the bottom end of spring 2 518 is fixedly connected to the top of the upper camera 8 .

[0059] Two cleaning strips 519 are symmetrically arranged, and the cleaning strips 519 are located on the arc-shaped rotation trajectory of the lower camera 7 and the upper camera 8. There is a height difference between the cleaning strips 519 on both sides, so that the cleaning strips 519 on one side are used to clean the lower camera 7, and the cleaning strips 519 on the other side are used to clean the upper camera 8.

[0060] Embodiment 1: Figure 1-Figure 9 As shown, by starting the reciprocating motor 51 to rotate reciprocatingly, the reciprocating motor 51 drives the rotating shaft 53 to rotate through the reducer 52, and the rotation speed of the rotating shaft 53 is slowed down by the reducer 52, the rotating shaft 53 drives the main pulley 54 to rotate, the main pulley 54 can drive the slave pulley 57 and the driven shaft 56 to rotate through the belt portion 55, the driven shaft 56 drives the rotating member 58 and the upper shaft 59 to rotate, the upper shaft 59 drives the connecting plate 510 to rotate, and the upper and lower connecting plates 510 respectively drive the upper camera 8 and the lower camera 7 to rotate horizontally, so that the monitoring range of the lower camera 7 and the upper camera 8 is expanded, avoiding the limitation of single-position monitoring.

[0061] When the lower camera 7 rotates, the spring 516 can drive the mounting tube 514 to rotate. The mounting tube 514 rotates inside the arc groove 512. The limit block 515 limits the mounting tube 514. The limit block 515 rotates inside the inner groove 513 to prevent the mounting tube 514 from falling out. When the lower camera 7 and the upper camera 8 rotate to the position of the cleaning strip 519, the cleaning strip 519 scrapes and cleans the lens part of the lower camera 7 and the upper camera 8, thereby reducing dust adhesion on the lens part of the lower camera 7 and the upper camera 8 and improving the security monitoring effect.

[0062] The smoke sensor 9 is used for smoke detection, and its model may be BZJ-801. The alarm body 10 is used for buzzer alarm, and its model may be PL-12C.

[0063] An auxiliary mechanism 6 is arranged on the other side of the top of the mounting plate 1, and the auxiliary mechanism 6 includes a connecting shaft 61 and an adjusting sleeve 62. The top of the output end of the reciprocating motor 51 passes through the reducer 52 and is fixedly connected to the bottom of the connecting shaft 61. The adjusting sleeve 62 is threadedly connected to the connecting shaft 61. A push plate 63 is fixedly connected to one side of the adjusting sleeve 62, and a push block 64 is installed on the outer side of the push plate 63.

[0064] An external thread is provided on the outer side of the upper part of the connecting shaft 61, and an internal thread is provided on the inner side of the adjusting sleeve 62. The external thread and the internal thread are adapted to be connected. The pushing plate 63 is provided with two parallel pushing blocks 64, which are fixedly connected to the side of the pushing plate 63 away from the adjusting sleeve 62. The two pushing blocks 64 are respectively abutted against the bottom of the upper and lower abutting blocks 511.

[0065] The bottoms of the two push plates 63 are fixedly connected with a same limiting rod 65 . A hole is formed through the interior of the mounting plate 1 , and the limiting rod 65 is slidably connected with the hole.

[0066] Embodiment 2: Figure 10-11 As shown, while the reciprocating motor 51 rotates, the output end of the reciprocating motor 51 drives the upper shaft 59 to rotate synchronously through the reducer 52, the adjusting sleeve 62 is threadedly connected to the connecting shaft 61, and the limiting rod 65 limits the pushing plate 63 and the adjusting sleeve 62, so that when the connecting shaft 61 rotates forward, the connecting shaft 61 drives the adjusting sleeve 62 to rise vertically, the adjusting sleeve 62 drives the pushing plate 63 and the limiting rod 65 to rise, the limiting rod 65 slides inside the mounting plate 1, the pushing plate 63 drives the pushing block 64 to rise, the pushing block 64 squeezes the abutting block 511, and the abutting block 511 drives the connecting plate 510 to rotate on the upper shaft 59, and the upper and lower connecting plates 510 respectively drive the upper camera 8 and the lower camera 7 to rotate vertically.

[0067] When the connecting shaft 61 reverses, the adjustment sleeve 62 drops vertically, and the elastic force of spring 1 516 drives the lower camera 7 to rotate and reset, and the elastic force of spring 2 518 drives the upper camera 8 to rotate and reset, thereby realizing the synchronous horizontal and vertical rotation of the lower camera 7 and the upper camera 8, further improving the security monitoring range of the lower camera 7 and the upper camera 8, and solving the problem of inconvenience in multi-angle adjustment and monitoring, resulting in blind spots in security monitoring, a small monitoring range, low flexibility in use, and dust easily sticking to the camera head, affecting the security monitoring alarm effect.

[0068] Working principle: When using the device, first, Figure 1-Figure 11 As shown, the reciprocating motor 51 is started to reciprocate, and the reciprocating motor 51 drives the rotating shaft 53 to rotate through the reducer 52, and the rotating shaft 53 drives the main pulley 54 to rotate, and the main pulley 54 can drive the slave pulley 57 and the driven shaft 56 to rotate through the belt portion 55, and the driven shaft 56 drives the rotating member 58 and the upper shaft 59 to rotate, so that the upper camera 8 and the lower camera 7 rotate horizontally, so that the monitoring range of the lower camera 7 and the upper camera 8 is expanded, and the mounting tube 514 rotates inside the arc groove 512. When the lower camera 7 and the upper camera 8 rotate to the position of the cleaning strip 519, the cleaning strip 519 is on the lower camera The lens parts of the lower camera 7 and the upper camera 8 are scraped and cleaned to reduce the dust adhesion on the lens parts of the lower camera 7 and the upper camera 8. When the reciprocating motor 51 rotates, the output end of the reciprocating motor 51 drives the upper shaft 59 to rotate synchronously through the reducer 52, so that when the connecting shaft 61 rotates forward, the connecting shaft 61 drives the adjusting sleeve 62 to rise vertically, and the upper and lower connecting plates 510 respectively drive the upper camera 8 and the lower camera 7 to rotate vertically. When the connecting shaft 61 reverses, the lower camera 7 and the upper camera 8 rotate and reset, realizing the synchronous horizontal and vertical rotation of the lower camera 7 and the upper camera 8, thereby improving the security monitoring range.

[0069] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0070] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An alarm device for building security, comprising a mounting plate (1), a smoke sensor (9) and an alarm body (10), wherein a fixing plate (2) is fixedly connected to one side of the mounting plate (1), bolts are fixedly installed in the interior of the fixing plate (2) in a transverse manner, a lower camera (7) and an upper camera (8) are installed in sequence above the mounting plate (1), and a battery unit (11) is fixedly installed on one side of the top of the mounting plate (1) close to the fixing plate (2); It is characterized in that Also includes: A vertical plate (3) is fixedly connected to one side of the bottom of the mounting plate (1), a horizontal plate (4) is fixedly connected between the vertical plate (3) and the fixed plate (2), an adjustment mechanism (5) is provided on one side of the top of the mounting plate (1), and an auxiliary mechanism (6) is provided on the other side of the top of the mounting plate (1); The smoke sensor (9) is fixedly mounted on one side of the bottom of the mounting plate (1), the smoke sensor (9) is located on a side of the vertical plate (3) away from the fixing plate (2), and the alarm body (10) is fixedly mounted on a side of the vertical plate (3) close to the smoke sensor (9); The regulating mechanism (5) comprises a reciprocating motor (51) fixedly mounted on one side of the bottom of the transverse plate (4); a reducer (52) is fixedly mounted on one side of the top of the transverse plate (4); the output end of the reciprocating motor (51) is connected to the inlet end of the reducer (52); the outlet end of the reducer (52) is fixedly connected to a rotating shaft (53); the outer side of the rotating shaft (53) is fixedly connected to a main pulley (54); the outer side of the main pulley (54) is sleeved with a belt portion (55); A driven shaft (56) is rotatably connected to the other side of the top of the transverse plate (4), a slave pulley (57) is fixedly connected to the outer side of the middle part of the driven shaft (56), the slave pulley (57) is adaptively connected to the belt portion (55), a rotating member (58) is fixedly connected to the top of the driven shaft (56), the rotating member (58) passes through the mounting plate (1) and is fixedly connected to an upper shaft (59), a connecting plate (510) is symmetrically rotatably mounted on the outer side of the upper shaft (59), two groups of connecting plates (510) are provided, and each group of connecting plates (510) includes two symmetrically arranged ones; The two upper connecting plates (510) are fixedly mounted on the upper camera (8), and the two lower connecting plates (510) are fixedly mounted on the lower camera (7). One end of the connecting plate (510) away from the lower camera (7) or the upper camera (8) is fixedly connected with a contact block (511). A spring 1 (516) is fixedly mounted on the bottom of the lower camera (7). The bottom end of the spring 1 (516) is connected with a mounting tube (514), and the mounting tube (514) is rotatably connected with the mounting plate (1). The top of the upper shaft (59) is fixedly connected to an upper strip plate (517), a second spring (518) is fixedly installed between the upper camera (8) and the upper strip plate (517), and a cleaning strip plate (519) is symmetrically fixedly installed on the top of the mounting plate (1); The auxiliary mechanism (6) comprises a connecting shaft (61) and an adjusting sleeve (62); the top of the output end of the reciprocating motor (51) passes through the reducer (52) and is fixedly connected to the bottom of the connecting shaft (61); the adjusting sleeve (62) is threadedly connected to the connecting shaft (61); a push plate (63) is fixedly connected to one side of the adjusting sleeve (62); and a push block (64) is installed on the outer side of the push plate (63).

2. The alarm device for building security according to claim 1, characterized in that: The rotating shaft (53) is located between the mounting plate (1) and the transverse plate (4), the top end of the rotating shaft (53) is rotatably connected to the bottom end of the mounting plate (1), and the belt portion (55) is located between the mounting plate (1) and the transverse plate (4).

3. The alarm device for building security according to claim 1, characterized in that: The rotating member (58) is rotatably connected to the mounting plate (1), the upper shaft (59) is located above the mounting plate (1), and the abutment block (511) is located on a side of the upper shaft (59) away from the lower camera (7).

4. The alarm device for building security according to claim 1, characterized in that: The top of the mounting plate (1) is provided with an arc-shaped groove (512) and an inner groove (513); the top of the inner groove (513) is connected to the bottom of the arc-shaped groove (512); the inner groove (513) is connected to the outside of the mounting plate (1); and both the arc-shaped groove (512) and the inner groove (513) are arranged in an arc shape.

5. The alarm device for building security according to claim 4, characterized in that: The spring 1 (516) is slidably connected to the mounting tube (514), the bottom end of the spring 1 (516) is fixedly connected to the inner bottom surface of the mounting tube (514), the bottom of the mounting tube (514) is fixedly connected to a limiting block (515), the mounting tube (514) is slidably connected to the arc groove (512), and the limiting block (515) is slidably connected to the inner groove (513).

6. The alarm device for building security according to claim 1, characterized in that: The second spring (518) is located on a side of the upper strip (517) away from the upper shaft (59), the top end of the second spring (518) is fixedly connected to one side of the bottom of the upper strip (517), and the bottom end of the second spring (518) is fixedly connected to the top of the upper camera (8).

7. The alarm device for building security according to claim 1, characterized in that: Two cleaning strips (519) are symmetrically arranged, and the cleaning strips (519) are located on the arc-shaped rotation trajectory of the lower camera (7) and the upper camera (8). There is a height difference between the cleaning strips (519) on both sides, so that the cleaning strips (519) on one side are used to clean the lower camera (7), and the cleaning strips (519) on the other side are used to clean the upper camera (8).

8. The alarm device for building security according to claim 1, characterized in that: The upper outer side of the connecting shaft (61) is provided with an external thread, the inner side of the adjusting sleeve (62) is provided with an internal thread, the external thread is adapted to be connected with the internal thread, the pushing plate (63) is provided with two parallel ones, the pushing block (64) is fixedly connected to the side of the pushing plate (63) away from the adjusting sleeve (62), and the two pushing blocks (64) are respectively abutted against the bottoms of the upper and lower abutting blocks (511).

9. An alarm device for building security according to claim 8, characterized in that: The bottoms of the two pushing plates (63) are fixedly connected to a same limiting rod (65), a hole groove is provided through the interior of the mounting plate (1), and the limiting rod (65) is slidably connected to the hole groove.

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