CN108799715B - A property security monitoring device based on blockchain technology - Google Patents

Abstract

The invention relates to the technical field of security monitoring equipment, and discloses a property security monitoring equipment based on blockchain technology, including a switch, a fixed block is fixedly installed on the front of the switch, and the number of the fixed blocks is two A connecting shaft is fixedly installed on both sides of the fixed block, a display screen is movably sleeved on the outer surface of the connecting shaft, and a fixed rotating shaft is fixedly installed on the front of the display screen. The property security monitoring equipment based on blockchain technology connects the fixed rod in the groove by positioning the rotating shaft, and the cooperation of the telescopic rod and the connecting rod makes the length of the telescopic rod easy to adjust, and the movable spring acts on the slider, making the length of the telescopic rod easy to adjust. The limit rod acts on the hole on the connecting rod to fix the position of the telescopic rod and the connecting rod, and cooperates with the connecting rod and the connecting pipe to connect the car to support the display screen, and then uses the fixed spring to act on the movable block, so that the support rod is supported and fixed. rod, so as to achieve the role of support.

Description

A property security monitoring device based on blockchain technology

technical field

The invention relates to the technical field of security monitoring equipment, in particular to a property security monitoring device based on blockchain technology.

Background technique

The so-called blockchain technology, referred to as BT, also known as distributed ledger technology, is an Internet database technology, which is characterized by decentralization, openness and transparency, allowing everyone to participate in database records, and is a property security monitoring device. One of the most common technologies in the world, security monitoring equipment includes many aspects, so the types of equipment are also more complex, which can be basically divided into TV monitoring systems, alarm control systems, remote image transmission equipment products, etc. There are mainly the following types of monitoring equipment : PTZ, bracket, protective cover, monitor, video amplifier, video switcher, screen splitter, video recorder, etc. Among them, the video switcher is particularly important. The function of the video switcher is to switch the image signal transmitted by the system, Repeating, processing and duplicating, it can automatically or manually control multiple video signals, enabling one monitor to monitor multiple camera signals.

The invention of the existing application number CN201610655371.2 discloses an ATEN switch, which includes: a switch body; the switch body is provided with a high-strength engineering plastic outer shell; the upper end of the switch body is provided with a A cover plate, the bottom end of the switch body is provided with a heat dissipation bottom plate, one side end of the switch body is provided with an input signal panel, and the front end of the switch body is provided with an LCD status display front panel. The invention has simple and reasonable structure, convenient operation and use, stable signal switching input and output, multi-channel input and multi-channel output from different signal sources, durability, good heat dissipation effect, and meets the requirements of economy and environmental protection.

Although the invention solves some problems, the following problems still need to be solved when using:

1. The switcher of the invention has too many complete sets of equipment, and needs to integrate keyboard components, mouse and display screen and other components for monitoring, resulting in an excessive number of equipment and cables, which is prone to errors;

2 This invention requires fixed installation, and the switcher fan has no fixed parts, which makes it limited.

The utility model of the existing application number CN201521033611.2 provides an integrated shared switcher, which belongs to the technical field of computer applications. Forming an all-in-one shared switcher that integrates mouse, keyboard and shared switcher in a 1U rack-mounted device. The advantages of the invention are that the equipment is highly integrated, the structure is compact, and the maintainability is good.

Although the utility model solves some problems, the following problems still need to be solved in use:

1 The display screen of the switcher is not supported, which is easy to cause displacement of the display screen and affect the monitoring effect;

2 The display screen of the switcher has no fixing device, and it is easy to be opened during transportation, so that the display screen will be broken by external force.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides a property security monitoring device based on blockchain technology, which has the advantages of fixed connection, display screen support and display screen fixing, etc., and solves the problem that the switch has no fixed parts and has limitations. Moreover, the display screen has no support, which is easy to cause the display screen to shift, which affects the monitoring effect. In addition, the display screen has no fixing device, and it is easy to open during transportation, so that the display screen is broken by external force.

(2) Technical solutions

In order to achieve the above fixed connection and display screen support and display screen fixing purposes, the present invention provides the following technical solutions: a property security monitoring device based on blockchain technology, including a switch, the front of the switch is fixedly installed with a fixed block , the number of the fixed block is two, the two sides of the fixed block are fixedly installed with a connecting shaft, the outer surface of the connecting shaft is movably sleeved with a display screen, and the front of the display screen is fixedly installed with a fixed rotating shaft , the number of the fixed rotating shaft is two, the outer surface of the fixed rotating shaft is movably sleeved with a connecting pipe, the front of the switch is provided with a groove located above the fixed block, and the number of the groove is two , the inner wall of the groove is fixedly installed with a positioning shaft, the outer surface of the positioning shaft is movably sleeved with a fixed rod, the bottom of the fixed rod is fixedly installed with a telescopic rod, and the bottom end of the telescopic rod is movably sleeved with a A connecting rod, the bottom of the telescopic rod is fixedly installed with a positioning block, the side of the positioning block is movably sleeved with the inner part of the connecting rod, the side of the connecting rod is fixedly installed with holes, and the number of the holes is twelve , the twelve said holes are evenly divided into two groups, and the two groups of holes are equally spaced on the surface of the connecting rod, the bottom of the inner wall of the groove is provided with a connecting groove, and the interior of the connecting groove is movably sleeved with a fixed spring One end of the fixed spring is fixedly connected with a movable block, the side of the movable block is movably sleeved with the inner wall of the connecting groove, the inner wall of the connecting groove is provided with a limiting groove, and the left and right sides of the movable block are fixedly installed There is a movable rod, the other end of the movable rod is movably sleeved with the inner wall of the limit groove, the side of the movable block away from the fixed spring is fixedly installed with a movable rotating shaft, and the outer surface of the movable rotating shaft is movably sleeved with a support rod The other end of the support rod is movably sleeved with a limit rotation shaft, a fixing ring is fixedly installed on one side of the limit rotation shaft, and the inner side of the fixing ring is fixedly sleeved with the outer surface of the fixing rod.

Preferably, a positioning groove is formed on the left side of the inner wall of the groove, a moving groove is formed on the right side of the inner wall of the groove, a moving rod is movably sleeved inside the moving groove, and the outer surface of the moving rod is fixed An adjustment rod is installed, an adjustment slot is opened on the front of the switch, and one end of the adjustment rod extends to the outside of the switch through the adjustment slot.

Preferably, a fixed cavity is opened inside the positioning block, a movable spring is movably sleeved inside the fixed cavity, a slider is fixedly connected to both ends of the movable spring, and the side of the slider is connected to the fixed cavity. regulation of inner wall activity.

Preferably, a limit rod is fixedly installed at one end of the slider away from the movable spring, and the other end of the limit rod penetrates the fixed cavity and extends to the outside of the telescopic rod and is movably sleeved with the hole on the outer surface of the connecting rod, and the limit rod is limited The outer surface of the position rod is sleeved with the inner movable socket of the telescopic rod.

Preferably, a positioning plate is fixedly installed at one end of the display screen away from the fixing block, the left and right ends of the positioning plate are provided with positioning cavities, and the bottom of the positioning plate is provided with a fixing groove, and the fixing groove is connected with the positioning cavity. The switches communicate with each other, and the switch is provided with a card slot on the inner side of the positioning plate.

Preferably, the interior of the positioning cavity is movably sleeved with a positioning spring, one end of the positioning spring is fixedly connected with a movable plate, and the right side of the movable plate is drivingly connected to the inner wall of the positioning cavity through the positioning spring.

Preferably, an adjustment block is fixedly installed on the bottom of the movable plate, the bottom end of the adjustment block extends to the outside of the positioning plate through a fixing groove, a clamping rod is fixedly installed on the left side of the movable plate, and the clamping The other end of the rod penetrates the positioning cavity and extends to the outside of the positioning plate, and is movably sleeved with the interior of the clamping slot.

Preferably, the left and right sides of the switch are fixedly installed with a folding rotating shaft, the outer surface of the folding rotating shaft is movably adjusted with a fixing member, and the left and right sides of the switch are fixedly installed with a movable rotating shaft above the folding rotating shaft.

Preferably, a fixing claw is movably sleeved on the outer surface of the movable rotating shaft, a torsion spring is movably sleeved on the outer surface of the movable rotating shaft, and one end of the torsion spring is fixedly connected with the back of the fixing claw. The other end is fixedly connected with the outer surface of the switch.

(3) Beneficial effects

Compared with the prior art, the present invention provides a property security monitoring device based on blockchain technology, which has the following beneficial effects:

1. The property security monitoring equipment based on blockchain technology connects the fixed rod in the groove by positioning the rotating shaft, and the cooperation of the telescopic rod and the connecting rod makes the length of the telescopic rod easy to adjust, and the movable spring acts on the slider , so that the limit rod acts on the hole on the connecting rod, so as to fix the position of the telescopic rod and the connecting rod, cooperate with the connecting rod and the connecting pipe to connect the car, so as to support the display screen, and then use the fixed spring to act on the movable block, so that the support rod Support the fixed rod, so as to achieve the function of support.

2. The property security monitoring equipment based on blockchain technology makes the display screen close through the contact between the positioning plate and the switch, and the clamping rod in the positioning plate is in contact with the slot on the switch, so that the positioning plate is fixed in the switch. On the switch, and then cooperate with the adjustment block to adjust the position of the movable plate, so as to adjust the position of the clamping rod, and then adjust the connection between the positioning plate and the switch to achieve the function of fixing the display screen.

3. The property security monitoring equipment based on blockchain technology connects the fixed part to the switcher by folding the rotating shaft, and the fixed claw on the movable rotating shaft is in contact with the fixed part under the action of the torsion spring, so that the fixed part is The position is fixed, and the fixed claw is fixed by the torsion spring, so it is easy to rotate, so that the fixed piece is separated from the fixed claw, so as to be connected, and the function of convenient fixing is achieved.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the enlarged view of A in the structure Fig. 1 of the present invention;

Fig. 3 is the enlarged view of B in Fig. 1 of the structure of the present invention;

Fig. 4 is the enlarged view of C in the structure Fig. 2 of the present invention;

Fig. 5 is the enlarged view of D in Fig. 1 of the structure of the present invention;

FIG. 6 is an enlarged view of E in FIG. 1 of the structure of the present invention.

In the picture: 1 switch, 2 fixing block, 3 connecting shaft, 4 display screen, 5 fixing shaft, 6 connecting pipe, 7 groove, 8 positioning shaft, 9 fixing rod, 10 telescopic rod, 11 connecting rod, 12 positioning block , 13 holes, 14 connection slots, 15 fixed springs, 16 movable blocks, 17 limit slots, 18 movable rods, 19 movable shafts, 20 support rods, 21 limit shafts, 22 fixed rings, 23 positioning slots, 24 moving slots, 25 moving rod, 26 adjusting rod, 27 adjusting slot, 28 fixing cavity, 29 movable spring, 30 sliding block, 31 limit rod, 32 positioning plate, 33 positioning cavity, 34 fixing slot, 35 positioning spring, 36 movable plate, 37 Adjusting block, 38 clamping lever, 39 folding shaft, 40 fixing piece, 41 movable shaft, 42 fixing claw, 43 torsion spring, 44 card slot.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Figure 1-6, a property security monitoring device based on blockchain technology, including switch 1, a fixed block 2 is fixedly installed on the front of switch 1, the number of fixed blocks 2 is two, and the A connecting shaft 3 is fixedly installed on both sides, and a display screen 4 is movably sleeved on the outer surface of the connecting shaft 3. A fixed rotating shaft 5 is fixedly installed on the front of the display screen 4, and the number of the fixed rotating shaft 5 is two. A connecting pipe 6 is movably sleeved on the surface, a groove 7 located above the fixed block 2 is opened on the front of the switch 1, the number of grooves 7 is two, and the inner wall of the groove 7 is fixedly installed with a positioning shaft 8, and the positioning shaft 8 The outer surface of the telescopic rod 9 is movably sleeved with a fixed rod 9, the bottom of the fixed rod 9 is fixedly installed with a telescopic rod 10, the bottom end of the telescopic rod 10 is movably sleeved with a connecting rod 11, and the bottom of the telescopic rod 10 is fixedly installed with a positioning block 12, positioning The side of the block 12 is movably sleeved with the interior of the connecting rod 11, the side of the connecting rod 11 is fixedly installed with holes 13, the number of holes 13 is twelve, and the twelve holes 13 are equally divided into two groups, and the two groups of holes 13 Equidistantly arranged on the surface of the connecting rod 11, the bottom of the inner wall of the groove 7 is provided with a connecting groove 14, a fixed spring 15 is movably sleeved inside the connecting groove 14, and one end of the fixed spring 15 is fixedly connected with a movable block 16, and the movable block 16 The side of the connecting groove 14 is movably sleeved with the inner wall of the connecting groove 14, the inner wall of the connecting groove 14 is provided with a limiting groove 17, the left and right sides of the movable block 16 are fixedly installed with movable rods 18, and the other end of the movable rod 18 is connected to the limiting groove 17. The inner wall is movably sleeved, the movable shaft 19 is fixedly installed on the side of the movable block 16 away from the fixed spring 15, the outer surface of the movable shaft 19 is movably sleeved with a support rod 20, and the fixed rod 9 is connected in the groove 7 through the positioning shaft 8 , and the cooperation between the telescopic rod 10 and the connecting rod 11 makes the length of the telescopic rod 10 easy to adjust, and the movable spring 29 acts on the slider 30, so that the limit rod 31 acts on the hole 13 on the connecting rod 11, thereby fixing the telescopic rod The position of the rod 10 and the connecting rod 11 is matched with the connecting rod 11 and the connecting pipe 6 to connect the car, so as to support the display screen 4, and then the fixed spring 15 is used to act on the movable block 16, so that the supporting rod 20 supports the fixed rod 9, so as to achieve the supporting effect. Function, the other end of the support rod 20 is movably sleeved with the limit shaft 21, one side of the limit shaft 21 is fixedly installed with a fixing ring 22, the inner side of the fixing ring 22 is fixedly sleeved with the outer surface of the fixing rod 9, and the inner wall of the groove 7 A positioning groove 23 is opened on the left side of the groove 7, a moving groove 24 is opened on the right side of the inner wall of the groove 7, a moving rod 25 is movably sleeved inside the moving groove 24, and an adjusting rod 26 is fixedly installed on the outer surface of the moving rod 25. The front side of 1 is provided with an adjustment slot 27, one end of the adjustment rod 26 extends to the outside of the switch 1 through the adjustment slot 27, a fixed cavity 28 is opened inside the positioning block 12, and a movable spring 29 is movably sleeved inside the fixed cavity 28, Both ends of the movable spring 29 are fixedly connected with the slider 30 , the side of the slider 30 is movably adjusted with the inner wall of the fixed cavity 28 , and the end of the slider 30 away from the movable spring 29 is fixedly installed A limit rod 31 , the other end of the limit rod 31 penetrates the fixing cavity 28 and extends to the outside of the telescopic rod 10 and is movably sleeved with the hole 13 on the outer surface of the connecting rod 11 , and the outer surface of the limit rod 31 is connected to the telescopic rod 10 . A positioning plate 32 is fixedly installed at one end of the display screen 4 away from the fixing block 2. The left and right ends of the positioning plate 32 are provided with positioning cavities 33, and the bottom of the positioning plate 32 is provided with a fixing groove 34. Through the positioning plate 32 is in contact with the switch 1, so that the display screen 4 is closed, and the clamping rod 38 in the positioning plate 32 is in contact with the slot 44 on the switch 1, so that the positioning plate 32 is fixed on the switch 1, and then cooperates with the adjustment block 37 , adjust the position of the movable plate 36, thereby adjusting the position of the clamping rod 38, and then adjust the connection between the positioning plate 32 and the switch 1, so as to achieve the function of fixing the display screen, and the fixing groove 34 and the positioning cavity 33 communicate with each other , the switch 1 is located on the inner side of the positioning plate 32 and is provided with a slot 44, the positioning spring 35 is movably sleeved inside the positioning cavity 33, and one end of the positioning spring 35 is fixedly connected to the moving plate 36, and the right side of the moving plate 36 passes through the positioning spring 35. It is connected with the inner wall of the positioning cavity 33 by transmission. The bottom of the movable plate 36 is fixedly installed with an adjustment block 37, and the bottom end of the adjustment block 37 extends to the outside of the positioning plate 32 through the fixing groove 34. Rod 38, the other end of the clamping rod 38 penetrates the positioning cavity 33 and extends to the outside of the positioning plate 32 and is movably sleeved with the interior of the clamping slot 44. The left and right sides of the switch 1 are fixedly installed with a folding shaft 39. The folding shaft The outer surface of 39 is movably adjusted with a fixing member 40. The left and right sides of the switch 1 are fixedly installed with a movable shaft 41 located above the folding shaft 39. The outer surface of the movable shaft 41 is movably sleeved with a fixed claw 42. A torsion spring 43 is movably sleeved on the surface, one end of the torsion spring 43 is fixedly connected to the back of the fixing claw 42, the other end of the torsion spring 43 is fixedly connected to the outer surface of the switch 1, and the fixing member 40 is connected to the switch by the folding shaft 39. Under the action of the torsion spring 43, the fixed claw 42 on the movable shaft 41 is in contact with the fixed piece 40, so that the position of the fixed piece 40 is fixed, and the fixed claw 42 is fixed by the torsion spring 43, so It is easy to rotate, so that the fixing member 40 is separated from the fixing claw 42, so as to be connected, and the effect of facilitating fixing is achieved. The switcher 1 has no fixed parts, which makes it limited, and the display screen 4 is not supported, which is easy to cause the display screen 4 to shift, which affects the monitoring effect. The problem that the display screen 4 is broken by external force.

When working, move the position of the adjusting rod 26 to move the position of the moving rod 25, so that the moving rod 25 is separated from the positioning groove 23, and under the action of the fixed spring 15, the movable block 16 is moved in the connecting groove 14, thereby jacking up Support the rod 20 so that the fixed rod 9 bounces up, and then press the limit rod 31 into the hole 13 to adjust the height, and then release it. , and contact the connecting rod 11 with the connecting pipe 6, move the position of the adjustment block 37 when closing, so that the movable plate 36 drives the clamping rod 38 to move, and then release, under the action of the positioning spring 35, the movable plate 36 drives the clamping rod 38 to move. The tightening rod 38 is in contact with the slot 44 .

To sum up, the property security monitoring equipment based on blockchain technology connects the fixed rod 9 in the groove 7 through the positioning shaft 8, and the cooperation of the telescopic rod 10 and the connecting rod 11 makes the length of the telescopic rod 10 convenient Adjust, and the movable spring 29 acts on the slider 30, so that the limit rod 31 acts on the hole 13 on the connecting rod 11, so as to fix the position of the telescopic rod 10 and the connecting rod 11, and cooperate with the connecting rod 11 and the connecting pipe 6 to connect the car , so as to support the display screen 4, and then use the fixed spring 15 to act on the movable block 16, so that the support rod 20 supports the fixed rod 9, so as to achieve the function of support; The clamping rod 38 in the positioning plate 32 is in contact with the clamping slot 44 on the switch 1, so that the positioning plate 32 is fixed on the switch 1, and then cooperates with the adjusting block 37 to adjust the position of the movable plate 36, thereby adjusting the clamping rod 38 position, and then adjust the connection between the positioning plate 32 and the switch 1 to achieve the function of fixing the display screen 4; the fixing member 40 is connected to the switch 1 by folding the rotating shaft 39, and the fixed claw 42 on the movable rotating shaft 41 Under the action of the torsion spring 43, it is in contact with the fixing piece 40, so that the position of the fixing piece 40 is fixed, and the fixing claw 42 is fixed by the torsion spring 43, so it is easy to rotate, so that the fixing piece 40 is separated from the fixing claw 42, Therefore, the connection is made to facilitate fixing; it is solved that the switch 1 has no fixed parts, which makes it limited, and the display screen 4 is not supported, which is easy to cause the display screen 4 to be displaced, which affects the monitoring effect. In addition, the display screen 4 has no The fixing device is easy to be opened during transportation, so that the display screen is broken by external force.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. A property security monitoring device based on blockchain technology, comprising a switch (1), characterized in that: a fixed block (2) is fixedly installed on the front of the switch (1), and the fixed block (2) ) is two, both sides of the fixing block (2) are fixedly installed with a connecting shaft (3), and a display screen (4) is movably sleeved on the outer surface of the connecting shaft (3), and the display A fixed rotating shaft (5) is fixedly installed on the front of the screen (4), the number of the fixed rotating shaft (5) is two, and a connecting pipe (6) is movably sleeved on the outer surface of the fixed rotating shaft (5). The front side of the switch (1) is provided with a groove (7) located above the fixing block (2), the number of the grooves (7) is two, and the inner wall of the groove (7) is fixedly installed with a positioning shaft (8), a fixing rod (9) is movably sleeved on the outer surface of the positioning shaft (8), a telescopic rod (10) is fixedly installed at the bottom of the fixing rod (9), and the telescopic rod (10) is A connecting rod (11) is movably sleeved at the bottom end, a positioning block (12) is fixedly installed at the bottom of the telescopic rod (10), and a side surface of the positioning block (12) is movably sleeved with the inner part of the connecting rod (11). , the side of the connecting rod (11) is fixedly installed with holes (13), the number of the holes (13) is twelve, the twelve holes (13) are equally divided into two groups, and the two groups of holes (13) equidistantly arranged on the surface of the connecting rod (11), a connecting groove (14) is formed at the bottom of the inner wall of the groove (7), and a fixed spring (15) is movably sleeved inside the connecting groove (14). ), one end of the fixed spring (15) is fixedly connected with a movable block (16), the side surface of the movable block (16) is movably sleeved with the inner wall of the connecting groove (14), and the inner wall of the connecting groove (14) A limit slot (17) is provided, and a movable rod (18) is fixedly installed on the left and right sides of the movable block (16). Then, a moving shaft (19) is fixedly installed on the side of the movable block (16) away from the fixed spring (15), and a support rod (20) is movably sleeved on the outer surface of the moving shaft (19). The other end of the rod (20) is movably sleeved with a limit rotation shaft (21), a fixing ring (22) is fixedly installed on one side of the limit rotation shaft (21), and the inner side of the fixing ring (22) is connected to the fixing rod ( 9) The outer surface of the fixed socket. 2. A property security monitoring device based on blockchain technology according to claim 1, characterized in that: a positioning groove (23) is provided on the left side of the inner wall of the groove (7), and the groove ( 7) A moving groove (24) is provided on the right side of the inner wall, a moving rod (25) is movably sleeved inside the moving groove (24), and an adjusting rod (26) is fixedly installed on the outer surface of the moving rod (25). ), an adjustment slot (27) is provided on the front of the switch (1), and one end of the adjustment rod (26) extends to the outside of the switch (1) through the adjustment slot (27). 3. A property security monitoring device based on blockchain technology according to claim 1, characterized in that: a fixed cavity (28) is opened inside the positioning block (12), and the fixed cavity (28) A movable spring (29) is connected to the inner movable sleeve of the movable spring (29), the two ends of the movable spring (29) are fixedly connected with a slider (30), and the side surface of the slider (30) is movable with the inner wall of the fixed cavity (28). adjust. 4. A property security monitoring device based on blockchain technology according to claim 3, characterized in that: a limit rod (31) is fixedly installed at one end of the slider (30) away from the movable spring (29), The other end of the limiting rod (31) penetrates the fixing cavity (28) and extends to the outside of the telescopic rod (10) and is movably sleeved with the hole (13) on the outer surface of the connecting rod (11), and the limiting rod ( The outer surface of 31) is sleeved with the inner movable socket of the telescopic rod (10). 5. A property security monitoring device based on blockchain technology according to claim 1, characterized in that: a positioning plate (32) is fixedly installed at one end of the display screen (4) away from the fixing block (2), Both the left and right ends of the positioning plate (32) are provided with positioning cavities (33). The switches (1) are located on the inner side of the positioning plate (32) and are provided with a card slot (44). 6. A property security monitoring device based on blockchain technology according to claim 5, characterized in that: a positioning spring (35) is movably sleeved inside the positioning cavity (33), and the positioning spring (35) A movable plate (36) is fixedly connected to one end of the movable plate (36), and the right side of the movable plate (36) is connected with the inner wall of the positioning cavity (33) in a driving manner through a positioning spring (35). 7. A property security monitoring device based on blockchain technology according to claim 6, characterized in that: an adjustment block (37) is fixedly installed at the bottom of the movable plate (36), and the adjustment block (37) ) extends to the outside of the positioning plate (32) through the fixing groove (34), the left side of the movable plate (36) is fixedly installed with a clamping rod (38), and the other side of the clamping rod (38) One end penetrates through the positioning cavity (33) and extends to the outside of the positioning plate (32) and is movably sleeved with the interior of the clamping slot (44). 8. A property security monitoring device based on blockchain technology according to claim 1, characterized in that: the left and right sides of the switch (1) are fixedly installed with a folding shaft (39), and the folding A fixing member (40) is movably adjusted on the outer surface of the rotating shaft (39), and a movable rotating shaft (41) located above the folding rotating shaft (39) is fixedly installed on the left and right sides of the switch (1). 9. A property security monitoring device based on blockchain technology according to claim 8, characterized in that: the outer surface of the movable shaft (41) is movably sleeved with a fixed claw (42), and the movable shaft (41) is movably sleeved with a fixed claw (42). A torsion spring (43) is movably sleeved on the outer surface of (41), one end of the torsion spring (43) is fixedly connected to the back of the fixing claw (42), and the other end of the torsion spring (43) is connected to the switch (43). 1) The outer surface of the fixed connection.

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