A movable bracket for a security monitoring device

Abstract

The present invention relates to the technical field of security monitoring equipment, and discloses a movable bracket for security monitoring equipment, which includes an electric height adjustment mechanism and a movable anti-overload mechanism. Inside it, there are an outer annular housing capable of driving a longitudinal threaded rod to rotate, an inner rotating column capable of rotating with a driving motor, and an arc-shaped limiting plate for making the outer annular housing rotate with the inner rotating column. For this movable bracket of security monitoring equipment, by using the driving motor to drive the threaded rod to rotate, the rapid height adjustment function of the security monitoring equipment can be realized. At this time, during the cooperation of the internal thread structure and the external thread structure, once the torque strength during rotation is too large, the device can automatically stop increasing the stress between the internal thread structure and the external thread structure, thereby effectively protecting the internal thread structure and the external thread structure, and improving the effective service life of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of security monitoring equipment, and particularly to a movable bracket for security monitoring equipment. Background Art

[0002] With the development of society, security monitoring facilities have been gradually popularized and become one of the essential facilities closely related to people's work and life, bringing great convenience and a sense of security to people. Their applications have gradually expanded from traditional public places, key parts, industry users, enterprise users, etc. to civilian market fields such as safe cities, digital cities, emergency management, environmental security, information security, and social home security. The bracket is the main support for the front-end equipment of the system. However, most of the existing brackets for security monitoring equipment are inconvenient to adjust the height of the bracket as needed, and the clamping of the security monitoring equipment is not firm enough.

[0003] For example, the Chinese patent with the publication number "CN220205163U" discloses a "movable bracket for security monitoring equipment". Its main structure includes a base, an installation groove, a support block, a lifting mechanism, a vertical rod, a top block, a second lead screw, and a monitoring installation bracket. The movable bracket for security monitoring equipment is provided with a lifting mechanism and a support block at the bottom of the base. When it is necessary to limit the device, the support block is driven by the lifting mechanism to move downward until it presses against the ground, thereby lifting the device. At this time, the universal wheels are disengaged from the ground. Since the contact area between the support block and the ground is large, the placement stability of the device is good, and it is avoided from shifting due to external forces.

[0004] During the actual use process, for the above-mentioned movable bracket for security monitoring equipment, it is necessary to manually rotate the threaded rod to adjust the height of the security monitoring equipment, which is time-consuming and laborious. Moreover, when the threaded sleeve moves to the lowest or highest point of the threaded rod, if the acting force for rotating the threaded rod does not stop, it will cause the pressure at the contact part of the threaded structure to increase, easily causing damage to the internal threaded structure and the external threaded structure. Therefore, its protective measures for the internal threaded structure and the external threaded structure are relatively poor. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a movable bracket for security monitoring equipment, which uses a driving motor to drive the rotation of the threaded rod, thereby realizing the function of quickly adjusting the height of the security monitoring equipment. At this time, during the cooperation of the internal threaded structure and the external threaded structure, once the torque strength during rotation is too large, the device can automatically stop increasing the stress between the internal threaded structure and the external threaded structure, thereby effectively protecting the internal threaded structure and the external threaded structure, and improving the effective service life of the equipment, and solving the above technical problems.

[0006] To achieve the above object, the present invention provides the following technical solution: A movable bracket for a security monitoring device, comprising a moving base with universal wheels installed at the bottom, an upward concave structure provided in the middle area of the moving base and having an open bottom end, a first component mounting hole and a first component fixing groove provided at the top of the moving base and communicating with the top end of the upward concave structure, and two second component mounting holes provided symmetrically at the edge of the moving base. It further includes an electric height adjustment mechanism, which internally has a longitudinal threaded rod rotatably installed above the moving base, a horizontal moving block installed on the rod body of the longitudinal threaded rod through a threaded structure and capable of generating a longitudinal movement phenomenon when the longitudinal threaded rod rotates, and a driving motor for driving the longitudinal threaded rod to rotate in a specific direction; and a movable overload prevention mechanism, which internally has an outer annular shell capable of driving the longitudinal threaded rod to rotate, an inner rotating column capable of rotating with the driving motor, and an arc-shaped limiting plate for making the outer annular shell rotate with the inner rotating column.

[0007] Preferably, the electric height adjustment mechanism includes a first rotating shaft, a longitudinal limiting rod, and a motor fixing housing. The middle shaft body of the first rotating shaft is installed inside the first component mounting hole through a bearing. The top of the first rotating shaft is fixedly installed with a longitudinal threaded rod. The bottom end of the longitudinal threaded rod is provided with a lower limiting plate integrally formed therewith. The top end of the longitudinal threaded rod is provided with an upper limiting plate integrally formed therewith. The bottom end of the longitudinal limiting rod is fixedly installed inside the first component fixing groove. The plate body of the horizontal moving block is provided with an internal threaded hole installed on the rod body of the longitudinal threaded rod through a threaded structure and a first rod body through hole sleeved on the rod body of the longitudinal limiting rod and capable of axially moving along the longitudinal limiting rod. One end of the horizontal moving block is provided with a device docking plate integrally formed therewith. The motor fixing housing is fixedly installed at the top of the upward concave structure in an inverted state. The driving motor in an inverted state is fixedly installed inside the motor fixing housing. The rotor end of the driving motor is fixedly installed with a main pulley, and the main pulley is linked with a secondary pulley through a belt.

[0008] Preferably, the threaded structure includes an internal threaded structure provided in the internal threaded hole and an external threaded structure provided on the rod body of the longitudinal threaded rod, and the internal threaded structure matches the external threaded structure.

[0009] Preferably, the height of the longitudinal limiting rod is not less than the height of the longitudinal threaded rod.

[0010] Preferably, the movable overload prevention mechanism includes an outer annular housing and an inner rotating column. One end of the outer annular housing is provided with a second component fixing groove for fixedly installing the bottom shaft body of the first rotating shaft. The other end of the outer annular housing is provided with a component installation cavity with an inner concave structure and one end being open. The outer annular housing is provided with a first component movable cavity around the middle area of the component installation cavity. The circumferential surface of the inner rotating column is installed inside the component installation cavity through a bearing. One end of the inner rotating column located outside the outer annular housing is provided with an inner concave structure and a third component fixing groove for fixedly installing the rotating end of the auxiliary pulley. The outer circumferential surface of the outer annular housing is provided with a plurality of columnar protrusion structures arranged in a circular array and being an integral structure. Each columnar protrusion structure is internally provided with a second component movable cavity. One end of the second component movable cavity is communicated with the circumferential surface of the first component movable cavity through a second rod body perforation. The outer annular housing places an inner movable plate capable of axially moving along the second component movable cavity in each second component movable cavity. The inner movable plate fixedly installs a contact rod penetrating through the second rod body perforation on the end surface facing the second rod body perforation. One end of the contact rod located inside the first component movable cavity fixedly installs an arc-shaped limiting plate capable of contacting the outer circumferential surface of the inner rotating column. The other end of the inner movable plate installs a first spiral spring in a compressed state.

[0011] Preferably, when the inner concave surface of the arc-shaped limiting plate contacts the outer circumferential surface of the inner rotating column, there is a gap between the inner movable plate and the end surface of the second rod body perforation.

[0012] Preferably, the static friction force formed by the first spiral spring on the arc-shaped limiting plate and the inner rotating column makes the maximum driven torque strength between the two less than the maximum torque strength of the thread structure in the undeformed state.

[0013] Preferably, it further includes two telescopic braking mechanisms, which internally include a longitudinal hollow housing fixedly installed inside the moving base and having a hollow interior, a piston plate located inside the longitudinal hollow housing and moving downward after being subjected to gas pressure, a second spiral spring located inside the longitudinal hollow housing and generating an upward elastic pressure on the piston plate, and a support base located directly below the longitudinal hollow housing and longitudinally moving along with the piston plate.

[0014] Preferably, the telescopic braking mechanism includes a longitudinal hollow housing penetrating through the second component mounting hole. The circumferential surface of the longitudinal hollow housing is provided with an annular fixing plate which is integrally structured with it and fixedly installed on the upper surface of the moving base. A third component moving cavity is arranged inside the longitudinal hollow housing. A gas reserve cavity is arranged at the top of the longitudinal hollow housing located in the third component moving cavity. A third rod body perforation communicating the space below it and the bottom end of the third component moving cavity is arranged at the bottom end of the longitudinal hollow housing. A gas flow channel communicating the space above it and the top end of the gas reserve cavity and internally installed with a gas valve is arranged at the top end of the longitudinal hollow housing. A piston plate capable of axially moving along the third component moving cavity is placed inside the longitudinal hollow housing located in the third component moving cavity. A longitudinal moving rod penetrating through the third rod body perforation is fixedly installed at the bottom end of the piston plate. A support base is fixedly installed at the bottom end of the longitudinal moving rod. A second helical spring in a compressed state is sleeved around the rod body of the longitudinal moving rod inside the third component moving cavity. The bottom end of the second helical spring abuts against the bottom end surface of the third component moving cavity, and the top end abuts against the bottom surface of the piston plate.

[0015] Preferably, the structural shape of the cross-section of the third rod body perforation is the same as that of the cross-section of the longitudinal moving rod, both being polygonal structures, and the structural dimensions of the cross-section of the third rod body perforation match those of the cross-section of the longitudinal moving rod.

[0016] Compared with the prior art, the present invention provides a movable bracket for a security monitoring device, which has the following beneficial effects:

[0017] 1. By using a driving motor to drive the rotation of the threaded rod, the rapid height adjustment function of the security monitoring device can be realized. At this time, during the cooperation of the internal thread structure and the external thread structure, once the torque strength during rotation is too large, the device can automatically stop increasing the stress between the internal thread structure and the external thread structure, thereby effectively protecting the internal thread structure and the external thread structure and improving the effective service life of the device.

[0018] 2. By setting an electric height adjustment mechanism, starting the driving motor will cause the horizontal moving block to move longitudinally. By controlling the rotation direction of the rotor, the longitudinal moving direction of the horizontal moving block can be controlled. After the horizontal moving block drives the security monitoring device to move to an appropriate height, the driving motor can be turned off, thereby realizing the electric directional height adjustment function of the security monitoring device.

[0019] 3. By setting up a movable anti-overload mechanism, within the normal range, it can transmit the rotational effect. When the top end of the horizontal moving block abuts against the bottom end of the upper limit plate, or when the bottom end of the horizontal moving block abuts against the top end of the lower limit plate, the torque strength during the rotation of the internal thread structure and the external thread structure will increase. Once the torque resistance is greater than the frictional force of the arc-shaped limit plate on the internal rotating column, the rotor will continue to drive the internal rotating column, and a relative rotation phenomenon will occur between the arc-shaped limit plate and the internal rotating column. The second component fixing groove will not drive the longitudinal threaded rod to continue rotating, thereby preventing the occurrence of damage to the thread structure caused by overloading of the torque strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the present invention;

[0021] Figure 2 is a perspective sectional view of the present invention;

[0022] Figure 3 is a perspective sectional view of the moving base in the present invention;

[0023] Figure 4 is a perspective sectional view of the electric height adjustment mechanism in the present invention;

[0024] Figure 5 is a perspective sectional view of the movable anti-overload mechanism in the longitudinal direction of the present invention;

[0025] Figure 6 is a perspective sectional view of the movable anti-overload mechanism in the transverse direction of the present invention;

[0026] Figure 7 is a perspective sectional view of the present invention;

[0027] Figure 8 is a perspective view of the longitudinal movable rod in the present invention.

[0028] Among them: 1. Mobile base; 2. Universal wheel; 3. Upper concave structure; 4. Mounting hole of component No. 1; 5. Fixed groove of component No. 1; 6. Mounting hole of component No. 2; 7. Electric height adjustment mechanism; 71. Rotating shaft No. 1; 72. Longitudinal threaded rod; 73. Lower limit plate; 74. Upper limit plate; 75. Longitudinal limit rod; 76. Horizontal moving block; 77. Internal threaded hole; 78. Through hole of rod No. 1; 79. Equipment docking plate; 710. Motor fixed housing; 711. Driving motor; 712. Rotor; 713. Main pulley; 714. Belt; 715. Secondary pulley; 8. Movable anti-overload mechanism; 81. Outer annular housing; 82. Secondary 1. Component fixing groove; 83. Component installation cavity; 84. Component movable cavity No. 1; 85. Columnar protrusion structure; 86. Component movable cavity No. 2; 87. Through hole of rod body No. 2; 88. Arc-shaped limit plate; 89. Inner rotating column; 810. Component fixing groove No. 3; 811. Internal movable plate; 812. Resistance rod; 813. Helical spring No. 1; 9. Telescopic brake mechanism; 91. Longitudinal hollow shell; 92. Annular fixing plate; 93. Component movable cavity No. 3; 94. Gas reserved cavity; 95. Through hole of rod body No. 3; 96. Gas flow channel; 97. Piston plate; 98. Longitudinal movable rod; 99. Helical spring No. 2; 910. Support base. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1 , Figure 2 and Figure 3 A movable bracket for security monitoring equipment includes a mobile base 1 with universal wheels 2 installed at the bottom, an upper concave structure 3 arranged in the middle area of ​​the mobile base 1 and with an open bottom end, a No. 1 component mounting hole 4 and a No. 1 component fixing groove 5 arranged on the top of the mobile base 1 and connected to the top of the upper concave structure 3, and two No. 2 component mounting holes 6 arranged at the edge of the mobile base 1 and in symmetry. The security monitoring equipment is fixedly installed in the corresponding area of ​​the equipment docking plate 79, and then the device can be pushed to move until the security monitoring equipment moves to the working area.

[0031] To achieve electric directional height adjustment of security monitoring equipment, please refer to Figure 1 , Figure 2 and Figure 4, it is necessary to set up an electric height adjustment mechanism 7, which internally has a longitudinal threaded rod 72 rotatably installed above the moving base 1, a horizontal moving block 76 installed on the rod body of the longitudinal threaded rod 72 through a threaded structure and capable of generating a longitudinal movement phenomenon when the longitudinal threaded rod 72 rotates, and a driving motor 711 for driving the longitudinal threaded rod 72 to rotate in a fixed direction. When the driving motor 711 is started, the rotor 712 will indirectly drive the first rotating shaft 71 through the belt 714, and the first rotating shaft 71 will drive the longitudinal threaded rod 72 to rotate. Since the longitudinal threaded rod 72 and the horizontal moving block 76 are connected by a threaded structure, and the longitudinal limiting rod 75 can limit the rotation of the horizontal moving block 76, the horizontal moving block 76 will move longitudinally. By controlling the rotation direction of the rotor 712, the longitudinal movement direction of the horizontal moving block 76 can be controlled. After the horizontal moving block 76 drives the security monitoring device to move to an appropriate height, the driving motor 711 can be turned off, thus realizing the electric directional height adjustment function of the security monitoring device.

[0032] For the specific structure of the electric height adjustment mechanism 7, please refer to Figure 4 , including a first rotating shaft 71, a longitudinal limiting rod 75 and a motor fixing housing 710. The middle shaft body of the first rotating shaft 71 is installed inside the first component installation hole 4 through a bearing. The top of the first rotating shaft 71 is fixedly installed with a longitudinal threaded rod 72. The bottom end of the longitudinal threaded rod 72 is provided with a lower limiting plate 73 integrally formed with it. The top end of the longitudinal threaded rod 72 is provided with an upper limiting plate 74 integrally formed with it. The bottom end of the longitudinal limiting rod 75 is fixedly installed inside the first component fixing groove 5. The plate body of the horizontal moving block 76 is provided with an internal threaded hole 77 installed on the rod body of the longitudinal threaded rod 72 through a threaded structure and a first rod body through hole 78 sleeved on the rod body of the longitudinal limiting rod 75 and capable of moving axially along the longitudinal limiting rod 75. The height of the longitudinal limiting rod 75 is not less than the height of the longitudinal threaded rod 72. Specifically, the threaded structure includes an internal threaded structure arranged in the internal threaded hole 77 and an external threaded structure arranged on the rod body of the longitudinal threaded rod 72, and the internal threaded structure matches the external threaded structure. One end of the horizontal moving block 76 is provided with an equipment docking plate 79 integrally formed with it. The motor fixing housing 710 is fixedly installed at the top of the upper concave structure 3 in an inverted state. The driving motor 711 in an inverted state is fixedly installed inside the motor fixing housing 710. The end of the rotor 712 of the driving motor 711 is fixedly installed with a main pulley 713. The main pulley 713 is linked with a secondary pulley 715 through a belt 714.

[0033] To prevent the occurrence of damage to the threaded structure caused by torque strength overload, please refer to Figure 2 、Figure 5 and Figure 6 , it is necessary to set up a movable anti-overload mechanism 8, which is internally provided with an outer annular housing 81 capable of driving the longitudinal threaded rod 72 to rotate, an inner rotating column 89 capable of rotating with the driving motor 711, and an arc-shaped limiting plate 88 for causing the outer annular housing 81 to rotate with the inner rotating column 89. Within the normal range, it can transmit the rotation effect. When the top end of the horizontal moving block 76 abuts against the bottom end of the upper limiting plate 74, or when the bottom end of the horizontal moving block 76 abuts against the top end of the lower limiting plate 73, the torque strength during the rotation of the internal thread structure and the external thread structure will increase. Once the torque resistance is greater than the frictional force of the arc-shaped limiting plate 88 on the inner rotating column 89, the rotor 712 will continue to drive the inner rotating column 89, and a relative rotation phenomenon will occur between the arc-shaped limiting plate 88 and the inner rotating column 89. The second component fixing groove 82 will not drive the longitudinal threaded rod 72 to continue rotating, thereby preventing the occurrence of damage to the thread structure caused by overloading of the torque strength.

[0034] For the specific structure of the movable anti-overload mechanism 8, please refer to Figure 5 and Figure 6, including an outer annular housing 81 and an inner rotating column 89. One end of the outer annular housing 81 is provided with a second component fixing groove 82 for fixedly installing the bottom shaft body of the first rotating shaft 71. The other end of the outer annular housing 81 is provided with a component installation cavity 83 with an inner concave structure and an open end. The outer annular housing 81 is provided with a first component moving cavity 84 around the middle area of the component installation cavity 83. The circumferential surface of the inner rotating column 89 is installed inside the component installation cavity 83 through a bearing. One end of the inner rotating column 89 located outside the outer annular housing 81 is provided with an inner concave structure and a third component fixing groove 810 for fixedly installing the rotating end of the auxiliary pulley 715. The outer circumferential surface of the outer annular housing 81 is provided with a plurality of columnar protrusion structures 85 arranged in an annular array and integrally formed. Each columnar protrusion structure 85 is internally provided with a second component moving cavity 86. One end of the second component moving cavity 86 is communicated with the circumferential surface of the first component moving cavity 84 through a second rod body perforation 87. The outer annular housing 81 places an internal moving plate 811 capable of axially moving along the second component moving cavity 86 inside each second component moving cavity 86. In order to have sufficient movement clearance, when the inner concave surface of the arc-shaped limiting plate 88 abuts against the outer circumferential surface of the inner rotating column 89, there should be a gap between the internal moving plate 811 and the end surface of the second rod body perforation 87. A contact rod 812 penetrating through the second rod body perforation 87 is fixedly installed on one end surface of the internal moving plate 811 facing the second rod body perforation 87. An arc-shaped limiting plate 88 capable of abutting against the outer circumferential surface of the inner rotating column 89 is fixedly installed at one end of the contact rod 812 located inside the first component moving cavity 84. The other end of the internal moving plate 811 is installed with a first spiral spring 813 in a compressed state. The static friction force formed by the first spiral spring 813 on the arc-shaped limiting plate 88 and the inner rotating column 89 makes the maximum driven torque strength between the two less than the maximum torque strength of the thread structure in the undeformed state.

[0035] In order to achieve an effective braking effect on the equipment, please refer to Figure 1 , Figure 2 , Figure 6 and Figure 7, it is necessary to set two telescopic braking mechanisms 9, which are internally provided with a longitudinal hollow housing 91 fixedly installed inside the moving base 1 and having a hollow structure inside, a piston plate 97 located inside the longitudinal hollow housing 91 and moving downward under gas pressure, a second helical spring 99 located inside the longitudinal hollow housing 91 and generating an upward elastic pressure on the piston plate 97, and a support base 910 located directly below the longitudinal hollow housing 91 and longitudinally moving with the piston plate 97. In the moving state, the elasticity of the second helical spring 99 will cause the piston plate 97 to drive the support base 910 to move upward, so that the support base 910 is separated from the ground to facilitate the movement of the device. When braking is required, it is used in conjunction with an inflation device. The inflation device injects high-pressure gas into the gas flow channel 96. Under the influence of the gas pressure, the piston plate 97 drives the support base 910 to move downward. The support base 910 abuts against the ground and makes the universal wheels 2 leave the ground, thereby achieving an effective braking effect on the device.

[0036] For the specific structure of the telescopic braking mechanism 9, please refer to Figure 6 and Figure 7 , including a longitudinal hollow housing 91 penetrating through the second component mounting hole 6. The circumferential surface of the longitudinal hollow housing 91 is provided with an annular fixing plate 92 integrally formed with it and fixedly installed on the upper surface of the moving base 1. The inside of the longitudinal hollow housing 91 is provided with a third component moving cavity 93. The longitudinal hollow housing 91 is provided with a gas reserve cavity 94 at the top of the third component moving cavity 93. The bottom end of the longitudinal hollow housing 91 is provided with a third rod body perforation 95 communicating the space below it and the bottom end of the third component moving cavity 93. The top end of the longitudinal hollow housing 91 is provided with a gas flow channel 96 communicating the space above it and the top end of the gas reserve cavity 94 and internally installed with a gas valve. Inside the longitudinal hollow housing 91 and located in the third component moving cavity 93, there is a piston plate 97 capable of moving axially along the third component moving cavity 93. The bottom end of the piston plate 97 is fixedly installed with a longitudinal moving rod 98 penetrating through the third rod body perforation 95. In order to prevent the longitudinal moving rod 98 from rotating, it is necessary to make the structural shape of the cross-section of the third rod body perforation 95 the same as that of the cross-section of the longitudinal moving rod 98, both being polygonal structures, and the structural size of the cross-section of the third rod body perforation 95 matching the structural size of the cross-section of the longitudinal moving rod 98. The bottom end of the longitudinal moving rod 98 is fixedly installed with a support base 910. A compressed second helical spring 99 is sleeved around the outer periphery of the rod body of the longitudinal moving rod 98 inside the third component moving cavity 93. The bottom end of the second helical spring 99 abuts against the bottom end surface of the third component moving cavity 93, and the top end abuts against the bottom surface of the piston plate 97.

[0037] The specific working principle of the present invention is as follows: The security monitoring device is fixedly installed in the corresponding area of the device docking plate 79, and then the device can be pushed to move until the security monitoring device moves to the working area. It is used in cooperation with the inflating device. The inflating device injects high-pressure gas into the gas flow channel 96. Under the influence of the gas pressure, the piston plate 97 drives the support base 910 to move downward. The support base 910 abuts against the ground, and the universal wheels 2 are separated from the ground, thereby achieving an effective braking effect on the device;

[0038] Start the drive motor 711, the rotor 712 will indirectly drive the first rotating shaft 71 through the belt 714, and the first rotating shaft 71 will drive the longitudinal threaded rod 72 to rotate. Since the longitudinal threaded rod 72 and the horizontal moving block 76 are connected in a threaded structure, and the longitudinal limiting rod 75 can limit the rotation of the horizontal moving block 76, the horizontal moving block 76 will move longitudinally. By controlling the rotation direction of the rotor 712, the longitudinal moving direction of the horizontal moving block 76 can be controlled. After the horizontal moving block 76 drives the security monitoring device to move to an appropriate height, the drive motor 711 can be turned off;

[0039] During the working process, once the torque resistance is greater than the friction force of the arc-shaped limiting plate 88 on the inner rotating column 89, the rotor 712 will continue to drive the inner rotating column 89, and a relative rotation phenomenon will occur between the arc-shaped limiting plate 88 and the inner rotating column 89. The second component fixing groove 82 will not drive the longitudinal threaded rod 72 to continue rotating, thereby preventing the occurrence of damage to the threaded structure caused by overloading of the torque strength.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A movable bracket for security monitoring equipment, comprising a movable base with universal wheels installed at the bottom, an upper concave structure arranged in the middle area of ​​the movable base and with an open bottom end, a No. 1 component mounting hole and a No. 1 component fixing groove arranged at the top of the movable base and connected to the top of the upper concave structure, and two No. 2 component mounting holes arranged at the edge of the movable base and in symmetry, characterized in that: Also includes, The electric height adjustment mechanism is provided with a longitudinal threaded rod rotatably mounted on the movable base, a horizontal moving block mounted on the longitudinal threaded rod body through a threaded structure and capable of generating longitudinal movement when the longitudinal threaded rod rotates, and a driving motor for driving the longitudinal threaded rod to rotate in a directional manner; and a movable anti-overload mechanism, which is provided with an outer annular housing capable of driving the longitudinal threaded rod to rotate, an inner rotating column capable of rotating with the driving motor, and an arc-shaped limit plate that enables the outer annular housing to rotate with the inner rotating column; The movable anti-overload mechanism includes an outer annular shell and an inner rotating column, one end of the outer annular shell is provided with a No. 2 component fixing groove for fixing the bottom shaft body of the No. 1 rotating shaft, the other end of the outer annular shell is provided with a component installation cavity with a concave structure and one end is open, the outer annular shell is provided with a No. 1 component movable cavity on the periphery of the middle area of ​​the component installation cavity, the circumferential surface of the inner rotating column is installed inside the component installation cavity through a bearing, the inner rotating column is provided with a No. 3 component fixing groove with a concave structure and used for fixing the rotating end of the secondary pulley at one end located outside the outer annular shell, and the outer circumferential surface of the outer annular shell is provided with a plurality of annular array-type and integrated A cylindrical protrusion structure with a structure of the type, each of the cylindrical protrusion structures is provided with a movable cavity of component No. 2 inside, one end of the movable cavity of component No. 2 is connected with the circumferential surface of the movable cavity of component No. 1 through the through hole of the No. 2 rod body, and an internal movable plate capable of axially moving along the movable cavity of component No. 2 is arranged in the outer annular shell inside each movable cavity of component No. 2, and a resistance rod passing through the through hole of the No. 2 rod body is fixedly installed on the end surface of the internal movable plate facing the through hole of the No. 2 rod body, and an arc-shaped limiting plate capable of resisting the outer circumferential surface of the inner rotating column is fixedly installed on the end located inside the movable cavity of component No. 1, and a No. 1 coil spring in a compressed state is installed on the other end of the internal movable plate.

2. The movable bracket for security monitoring equipment according to claim 1, characterized in that: The electric height adjustment mechanism includes a No. 1 rotating shaft, a longitudinal limit rod and a motor fixed shell. The middle shaft body of the No. 1 rotating shaft is installed inside the No. 1 component mounting hole through a bearing. A longitudinal threaded rod is fixedly installed on the top of the No. 1 rotating shaft. A lower limit plate with an integral structure therewith is provided at the bottom end of the longitudinal threaded rod. An upper limit plate with an integral structure therewith is provided at the top end of the longitudinal threaded rod. The bottom end of the longitudinal limit rod is fixedly installed inside the No. 1 component fixed groove. An internal threaded hole installed on the longitudinal threaded rod body through a threaded structure and a No. 1 rod body through-hole which is sleeved on the longitudinal limit rod body and can move axially along the longitudinal limit rod are provided in the plate body of the horizontal moving block. An equipment docking plate with an integral structure therewith is provided at one end of the horizontal moving block. The motor fixed shell is fixedly installed on the top end of the upper concave structure in an inverted state. An inverted driving motor is fixedly installed inside the motor fixed shell. A main pulley is fixedly installed on the rotor end of the driving motor. The main pulley is linked to a secondary pulley through a belt.

3. The movable bracket for security monitoring equipment according to claim 2, characterized in that: The thread structure comprises an internal thread structure arranged in the internal thread hole and an external thread structure arranged on the longitudinal thread rod body, and the internal thread structure matches the external thread structure.

4. The movable bracket for security monitoring equipment according to claim 2, characterized in that: The height of the longitudinal limiting rod is not less than the height of the longitudinal threaded rod.

5. The movable bracket for security monitoring equipment according to claim 1, characterized in that: When the inner concave surface of the arc-shaped limiting plate contacts the outer circumferential surface of the inner rotating column, a gap exists between the inner movable plate and the end surface of the through hole of the second rod body.

6. The movable bracket for security monitoring equipment according to claim 1, characterized in that: The static friction force formed by the No. 1 spiral spring on the arc-shaped limit plate and the inner rotating column makes the maximum driven torque strength between the two smaller than the maximum torque strength of the threaded structure in the undeformed state.

7. A movable bracket for security monitoring equipment according to any one of claims 1 to 6, characterized in that: It also includes two telescopic braking mechanisms, which are internally provided with a longitudinal hollow shell fixedly installed inside the movable base and having a hollow structure inside, a piston plate located inside the longitudinal hollow shell and moving downward after being subjected to gas pressure, a No. 2 coil spring located inside the longitudinal hollow shell and exerting upward elastic pressure on the piston plate, and a supporting base located directly below the longitudinal hollow shell and moving longitudinally with the piston plate.

8. The movable bracket for security monitoring equipment according to claim 7, characterized in that: The telescopic brake mechanism comprises a longitudinal hollow shell which passes through the mounting hole of the No. 2 component, the circumferential surface of the longitudinal hollow shell is provided with an annular fixing plate which is an integral structure with the shell and fixedly mounted on the upper surface of the movable base, the interior of the longitudinal hollow shell is provided with an active cavity of the No. 3 component, the longitudinal hollow shell is provided with a gas reserved cavity at the top of the active cavity of the No. 3 component, the bottom end of the longitudinal hollow shell is provided with a No. 3 rod body through hole which connects the space below it and the bottom end of the active cavity of the No. 3 component, the top end of the longitudinal hollow shell is provided with a No. 3 rod body through hole which connects the space above it and the top end of the gas reserved cavity and A gas flow channel with an air valve installed inside, the longitudinal hollow shell is provided with a piston plate capable of axially moving along the active cavity of component No. 3, inside the active cavity of component No. 3, a longitudinal active rod penetrating the through hole of the rod body No. 3 is fixedly installed on the bottom end of the piston plate, a supporting base is fixedly installed on the bottom end of the longitudinal active rod, and a No. 2 coil spring in a compressed state is sleeved on the outer periphery of the rod body of the longitudinal active rod located inside the active cavity of component No. 3, the bottom end of the No. 2 coil spring abuts against the bottom end surface of the active cavity of component No. 3, and the top end abuts against the bottom surface of the piston plate.

9. The movable bracket for security monitoring equipment according to claim 8, characterized in that: The structural shape of the cross section of the No. 3 rod body through hole is consistent with the structural shape of the cross section of the longitudinal movable rod, both of which are polygonal structures, and the structural size of the cross section of the No. 3 rod body through hole matches the structural size of the cross section of the longitudinal movable rod.

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