Movable support for security and protection monitoring equipment

Abstract

The invention relates to the technical field of security and protection monitoring equipment, and discloses a security and protection monitoring equipment movable support which comprises an electric height adjusting mechanism and a movable overload protection mechanism. An outer annular shell capable of driving the longitudinal threaded rod to rotate, an inner rotating column capable of rotating along with the driving motor and an arc-shaped limiting plate enabling the outer annular shell to rotate along with the inner rotating column are arranged in the outer annular shell. According to the movable support for the security and protection monitoring equipment, the threaded rod is driven by the driving motor to rotate, so that the function of rapidly adjusting the height of the security and protection monitoring equipment is achieved, and at the moment, in the matching process of the internal thread structure and the external thread structure, once the torque strength is too large during rotation, the safety of the security and protection monitoring equipment is ensured. The device can automatically stop stress increase between the internal thread structure and the external thread structure, so that the internal thread structure and the external thread structure are effectively protected, and the effective service life of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of security monitoring equipment, in particular to a movable bracket of security monitoring equipment. Background Art

[0002] With the development of society, security monitoring facilities have gradually become popular and become one of the indispensable facilities closely related to people's work and life, bringing great convenience and sense of security to people. Its application has gradually expanded from traditional public places, key parts, industry users, corporate users, etc. to civil market fields such as safe cities, digital cities, emergency management, environmental safety, information security, social home safety, etc. The bracket is the main support for the front-end equipment of the system, and most of the existing security monitoring equipment brackets are inconvenient to adjust the height of the bracket according to needs, and the clamping of the security monitoring equipment is not stable enough.

[0003] For example, the Chinese patent with publication number "CN220205163U" discloses a "mobile bracket for security monitoring equipment", whose main structure includes a base, a mounting slot, a support block, a lifting mechanism, a vertical rod, a top block, a second screw rod and a monitoring mounting frame. The mobile bracket for security monitoring equipment is provided with a lifting mechanism and a support block at the bottom of the base. When the device needs to be limited, the lifting mechanism drives the support block to move downward until it is pressed against the ground, thereby lifting the device. At this time, the universal wheel is out of contact with the ground. Since the contact area between the support block and the ground is large, the placement stability of the device is better, avoiding displacement due to external force.

[0004] In actual use, the movable bracket of the security monitoring device needs to manually rotate the threaded rod to adjust the height of the security monitoring device, which is time-consuming and labor-intensive. In addition, when the threaded sleeve moves to the lowest or highest point of the threaded rod, if the force of rotating the threaded rod is not stopped, the pressure of the threaded structure at the contact part will increase, which may easily cause damage to the internal thread structure and the external thread structure. Therefore, the protection measures for the internal thread structure and the external thread structure are relatively poor. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a movable bracket for security monitoring equipment, which utilizes a driving motor to drive a threaded rod to rotate, thereby realizing a rapid height adjustment function for the security monitoring equipment. At this time, during the cooperation between the internal thread structure and the external thread structure, once the torque strength during rotation is too large, the device can autonomously stop increasing the stress between the internal thread structure and the external thread structure, thereby providing an effective protective measure for the internal thread structure and the external thread structure, thereby increasing the effective service life of the equipment and solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a movable bracket for security monitoring equipment, comprising a mobile base with universal wheels installed at the bottom, an upper concave structure arranged in the middle area of ​​the mobile 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 mobile base and connected to the top of the upper concave structure, and two No. 2 component mounting holes arranged at the edge of the mobile base and in symmetry, and also comprising an electric height adjustment mechanism, inside of which a longitudinal threaded rod rotatably installed above the mobile base, a horizontal moving block installed at the rod body of the longitudinal threaded rod 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, inside of which 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 limit plate that allows the outer annular shell to rotate with the inner rotating column.

[0007] Preferably, the electric height adjustment mechanism includes a No. 1 rotating shaft, a longitudinal limit rod and a motor fixed housing, 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 fixing 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 housing 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 housing, a main pulley is fixedly installed on the rotor end of the driving motor, and the main pulley is linked to a secondary pulley through a belt.

[0008] Preferably, the thread structure includes an internal thread structure arranged in the internal thread hole and an external thread structure arranged on the longitudinal threaded rod body, and the internal thread structure matches the external thread 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 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 fixedly installing 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 fixedly installing 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 A cylindrical protrusion structure of an integrated structure, each of which 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 limit plate capable of resisting the outer circumferential surface of the inner rotating column is fixedly installed on the end of the resistance rod 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.

[0011] Preferably, 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 hole of the second rod body.

[0012] Preferably, the static friction force formed by the No. 1 coil 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 an undeformed state.

[0013] Preferably, it also includes two telescopic braking mechanisms, which are 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.

[0014] Preferably, 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, and the top end of the longitudinal hollow shell is provided with a through hole which connects the space above it and the top of the gas reserved cavity The longitudinal hollow shell has a gas flow passage with a gas valve installed at the end, a piston plate which can move axially along the active cavity of component No. 3 is placed inside the active cavity of component No. 3, a longitudinal active rod which passes through the through hole of the rod body No. 3 is fixedly installed at the bottom end of the piston plate, a supporting base is fixedly installed at 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.

[0015] Preferably, 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 are polygonal structures, and the structural dimensions of the cross section of the No. 3 rod body through hole match the structural dimensions of the cross section of the longitudinal movable rod.

[0016] Compared with the prior art, the present invention provides a movable bracket for security monitoring equipment, which has the following beneficial effects: 1. Use a drive motor to drive the threaded rod to rotate, so as to realize the rapid height adjustment function of the security monitoring equipment. At this time, during the cooperation process between 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 playing an effective protective measure for the internal thread structure and the external thread structure, so as to increase the effective service life of the equipment; 2. By setting up an electric height adjustment mechanism and starting the drive motor, the horizontal moving block will move longitudinally, and by controlling the rotation direction of the rotor, the longitudinal moving direction of the horizontal moving block can be controlled, so that the horizontal moving block drives the security monitoring equipment to move to a suitable height, and then the drive motor is turned off, thereby realizing the electric directional height adjustment function of the security monitoring equipment; 3. By setting up a movable anti-overload mechanism, it can transmit the rotation effect within the normal range. When the top of the horizontal moving block hits the bottom of the upper limit plate, or when the bottom of the horizontal moving block hits the top of the lower limit plate, the torque strength of the internal thread structure and the external thread structure during rotation will increase. Once the torque resistance is greater than the friction force of the arc limit plate on the inner rotating column, the rotor will continue to drive the inner rotating column, and the arc limit plate will rotate relative to the inner rotating column. The fixing groove of component No. 2 will not drive the longitudinal threaded rod to continue rotating, thereby preventing the occurrence of damage to the threaded structure caused by torque strength overload. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 is a three-dimensional cross-sectional view of the present invention; Figure 3 is a three-dimensional cross-sectional view of the mobile base in the present invention; Figure 4 is a three-dimensional cross-sectional view of the electric height adjustment mechanism of the present invention; Figure 5 It is a vertical sectional view of the movable anti-overload mechanism of the present invention; Figure 6 It is a horizontal three-dimensional cross-sectional view of the movable anti-overload mechanism of the present invention; Figure 7 It is a three-dimensional cross-sectional view of the present invention; Figure 8 It is a three-dimensional diagram of the longitudinal movable rod in the present invention.

[0018] 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

[0019] 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.

[0020] 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.

[0021] 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 is internally provided with a longitudinal threaded rod 72 rotatably installed above the mobile base 1, a horizontal moving block 76 installed at the rod body of the longitudinal threaded rod 72 through a threaded structure and capable of generating longitudinal movement when the longitudinal threaded rod 72 rotates, and a driving motor 711 for driving the longitudinal threaded rod 72 to directional rotation. When the driving motor 711 is started, the rotor 712 will indirectly drive the No. 1 rotating shaft 71 to rotate through the belt 714, and the No. 1 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 also play a role in rotationally limiting the horizontal moving block 76, the horizontal moving block 76 will be moved longitudinally. By controlling the rotation direction of the rotor 712, the longitudinal moving direction of the horizontal moving block 76 can be controlled, so that after the horizontal moving block 76 drives the security monitoring equipment to move to a suitable height, the driving motor 711 is turned off, thereby realizing the electric directional height adjustment function of the security monitoring equipment.

[0022] For the specific structure of the electric height adjustment mechanism 7, please refer to Figure 4 , including a No. 1 rotating shaft 71, a longitudinal limiting rod 75 and a motor fixed housing 710, the middle shaft body of the No. 1 rotating shaft 71 is installed inside the No. 1 component mounting hole 4 through a bearing, a longitudinal threaded rod 72 is fixedly installed on the top of the No. 1 rotating shaft 71, the bottom end of the longitudinal threaded rod 72 is provided with a lower limiting plate 73 of an integral structure therewith, the top end of the longitudinal threaded rod 72 is provided with an upper limiting plate 74 of an integral structure therewith, the bottom end of the longitudinal limiting rod 75 is fixedly installed inside the No. 1 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 The rod body is through-hole 78, and the height of the longitudinal limit 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 with an integrated structure therewith. The motor fixed shell 710 is fixedly installed on the top of the upper concave structure 3 in an inverted state. An inverted driving motor 711 is fixedly installed inside the motor fixed shell 710, and a main pulley 713 is fixedly installed at the end of the rotor 712 of the driving motor 711. The main pulley 713 is linked to a secondary pulley 715 through a belt 714.

[0023] To prevent damage to the thread structure due to torque 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 shell 81 that can drive the longitudinal threaded rod 72 to rotate, an inner rotating column 89 that can rotate with the driving motor 711, and an arc-shaped limit plate 88 that allows the outer annular shell 81 to rotate with the inner rotating column 89. Within the normal range, it can transmit the rotation effect, and when the top end of the horizontal moving block 76 abuts against the bottom end of the upper limit plate 74, or when the bottom end of the horizontal moving block 76 abuts against the top end of the lower limit plate 73, the torque strength of the internal thread structure and the external thread structure during rotation will increase. Once the torque resistance is greater than the friction force of the arc-shaped limit plate 88 on the inner rotating column 89, the rotor 712 will continue to drive the inner rotating column 89, and the arc-shaped limit plate 88 will rotate relative to the inner rotating column 89, and 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 torque strength overload.

[0024] For the specific structure of the movable anti-overload mechanism 8, please refer to Figure 5 and Figure 6, including an outer annular shell 81 and an inner rotating column 89, one end of the outer annular shell 81 is provided with a No. 2 component fixing groove 82 for fixing the bottom shaft body of the No. 1 rotating shaft 71, the other end of the outer annular shell 81 is provided with a component installation cavity 83 with an inner concave structure and one end being open, the outer annular shell 81 is provided with a No. 1 component activity cavity 84 on the periphery of the middle area of ​​the component installation cavity 83, and the circumferential surface of the inner rotating column 89 is installed inside the component installation cavity 83 through a bearing The inner rotating column 89 is provided with a concave structure at one end outside the outer annular shell 81 and a No. 3 component fixing groove 810 for fixing the rotating end of the secondary pulley 715. The outer circumferential surface of the outer annular shell 81 is provided with a plurality of cylindrical protrusion structures 85 in an annular array and an integral structure. Each of the cylindrical protrusion structures 85 is provided with a No. 2 component active cavity 86 inside. One end of the No. 2 component active cavity 86 is connected to the circumferential surface of the No. 1 component active cavity 84 through the No. 2 rod body through-hole 87. The outer annular shell 81 is connected, and an internal movable plate 811 capable of axially moving along the active cavity 86 of the second component is placed inside each of the active cavities 86 of the second component. In order to have sufficient movement clearance, it is necessary to make the inner concave surface of the arc-shaped limit plate 88 abut against the outer circumferential surface of the inner rotating column 89, and there is a gap between the end face of the internal movable plate 811 and the through hole 87 of the second rod body. The internal movable plate 811 is fixedly installed with a through hole 87 of the second rod body on one end face facing the through hole 87 of the second rod body. The rod body has a through hole 87, and one end of the rod 812 is fixedly provided with an arc-shaped limit plate 88 capable of abutting against the outer circumference of the inner rotating column 89, and the other end of the inner movable plate 811 is provided with a compressed coil spring 813. The static friction force formed by the coil spring 813 on the arc-shaped limit plate 88 and the inner rotating column 89 makes the maximum driven torque strength between the two smaller than the maximum torque strength of the threaded structure in the undeformed state.

[0025] To achieve effective braking of the equipment, refer to Figure 1 , Figure 2 , Figure 6 and Figure 7, it is necessary to set up two telescopic braking mechanisms 9, which are provided with a longitudinal hollow shell 91 fixedly installed inside the mobile base 1 and having a hollow structure inside, a piston plate 97 located inside the longitudinal hollow shell 91 and moving downward after being subjected to gas pressure, a No. 2 coil spring 99 located inside the longitudinal hollow shell 91 and generating an upward elastic pressure on the piston plate 97, and a support base 910 located directly below the longitudinal hollow shell 91 and moving longitudinally with the piston plate 97. In the moving state, the elasticity of the No. 2 coil spring 99 will cause the piston plate 97 to drive the support base 910 to move upward, thereby causing the support base 910 to leave the ground to facilitate the movement of the equipment. When braking is required, it is used in conjunction with an inflatable device, and the inflatable 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, and the support base 910 contacts the ground, and causes the universal wheel 2 to leave the ground, thereby achieving an effective braking effect on the equipment.

[0026] For the specific structure of the telescopic brake mechanism 9, please refer to Figure 6 and Figure 7 , including a longitudinal hollow shell 91 that passes through the mounting hole 6 of the No. 2 component, the circumferential surface of the longitudinal hollow shell 91 is provided with an annular fixing plate 92 that is an integral structure with it and fixedly mounted on the upper surface of the mobile base 1, the interior of the longitudinal hollow shell 91 is provided with a No. 3 component active chamber 93, the longitudinal hollow shell 91 is provided with a gas reservation chamber 94 at the top of the No. 3 component active chamber 93, the bottom end of the longitudinal hollow shell 91 is provided with a No. 3 rod body through hole 95 that connects the space below it and the bottom end of the No. 3 component active chamber 93, the top end of the longitudinal hollow shell 91 is provided with a gas flow channel 96 that connects the space above it and the top end of the gas reservation chamber 94 and has a gas valve installed inside, and the longitudinal hollow shell 91 is provided with a gas valve that can be moved along the axial direction of the No. 3 component active chamber 93 inside the No. 3 component active chamber 93. A movable piston plate 97, the bottom end of which is fixedly mounted with a longitudinal movable rod 98 which passes through the No. 3 rod body through-hole 95. In order to prevent the longitudinal movable rod 98 from rotating, it is necessary to make the structural shape of the cross section of the No. 3 rod body through-hole 95 consistent with the structural shape of the cross section of the longitudinal movable rod 98, both of which are polygonal structures, and the structural dimensions of the cross section of the No. 3 rod body through-hole 95 match the structural dimensions of the cross section of the longitudinal movable rod 98. A supporting base 910 is fixedly mounted on the bottom end of the longitudinal movable rod 98. The longitudinal movable rod 98 is provided with a No. 2 coil spring 99 in a compressed state on the outer periphery of the rod body located inside the No. 3 component active cavity 93. The bottom end of the No. 2 coil spring 99 abuts against the bottom end surface of the No. 3 component active cavity 93, and the top end abuts against the bottom surface of the piston plate 97.

[0027] The specific working principle of the present invention is that 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, and is used in conjunction with the inflatable device. The inflatable 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 contacts the ground, and the universal wheel 2 is separated from the ground, thereby achieving an effective braking effect on the device; Start the drive motor 711, the rotor 712 will indirectly drive the No. 1 rotating shaft 71 to rotate through the belt 714, and the No. 1 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 limit rod 75 can also play a rotation limit effect on 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, so that the horizontal moving block 76 drives the security monitoring device to move to a suitable height, and then the drive motor 711 is turned off; During operation, once the torque resistance is greater than the friction force of the arc-shaped limit plate 88 on the inner rotating column 89, the rotor 712 will continue to drive the inner rotating column 89, and the arc-shaped limit plate 88 will rotate relative to the inner rotating column 89. The fixing groove 82 of the second component will not drive the longitudinal threaded rod 72 to continue rotating, thereby preventing the occurrence of damage to the threaded structure caused by torque strength overload.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 (1) with universal wheels (2) installed at the bottom, an upper concave structure (3) arranged in the middle area of ​​the movable base (1) and with an open bottom, a No. 1 component mounting hole (4) and a No. 1 component fixing groove (5) arranged at the top of the movable 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 movable base (1) and in symmetry, characterized in that: Also includes, An electric height adjustment mechanism (7) is provided with a longitudinal threaded rod (72) rotatably mounted above a movable base (1), a horizontal moving block (76) mounted on the body of the longitudinal threaded rod (72) via a threaded structure and capable of generating longitudinal movement when the longitudinal threaded rod (72) rotates, and a driving motor (711) for driving the longitudinal threaded rod (72) to rotate in a directional manner; and a movable overload prevention mechanism (8), the interior of which is 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 a driving motor (711), and an arc-shaped limiting plate (88) that enables the outer annular housing (81) to rotate with the inner rotating column (89).

2. The movable bracket for security monitoring equipment according to claim 1, characterized in that: The electric height adjustment mechanism (7) comprises a first rotating shaft (71), a longitudinal limiting rod (75) and a motor fixing housing (710), wherein the middle shaft of the first rotating shaft (71) is installed inside the first component mounting hole (4) through a bearing, a longitudinal threaded rod (72) is fixedly installed on the top of the first rotating shaft (71), a lower limiting plate (73) having an integral structure with the longitudinal threaded rod (72) is provided at the bottom end of the longitudinal threaded rod (72), an upper limiting plate (74) having an integral structure with the longitudinal threaded rod (72) is provided at the top end of the longitudinal threaded rod (72), the bottom end of the longitudinal limiting rod (75) is fixedly installed inside the first component fixing groove (5), and a plate body of the horizontal moving block (76) is provided with a fixing plate (74) having a threaded structure. An internal threaded hole (77) on the rod body of the longitudinal threaded rod (72) and a rod body through hole (78) which is sleeved on the rod body of the longitudinal limiting rod (75) and can move axially along the longitudinal limiting rod (75); one end of the horizontal moving block (76) is provided with an equipment docking plate (79) with an integral structure therewith; the motor fixed housing (710) is fixedly mounted on the top of the upper concave structure (3) in an inverted state; an inverted driving motor (711) is fixedly mounted inside the motor fixed housing (710); a main pulley (713) is fixedly mounted on the end of the rotor (712) of the driving motor (711); the main pulley (713) is linked to a secondary pulley (715) via a belt (714).

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 (77) and an external thread structure arranged on the rod body of the longitudinal thread rod (72), 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 (75) is not less than the height of the longitudinal threaded rod (72).

5. The movable bracket for security monitoring equipment according to claim 2, characterized in that: The movable anti-overload mechanism (8) comprises an outer annular shell (81) and an inner rotating column (89), one end of the outer annular shell (81) is provided with a No. 2 component fixing groove (82) for fixing the bottom shaft body of the No. 1 rotating shaft (71), the other end of the outer annular shell (81) is provided with a component mounting cavity (83) with an inner concave structure and one end being open, the outer annular shell (81) is provided with a No. 1 component movable cavity (84) on the periphery of the middle area of ​​the component mounting cavity (83), the circumferential surface of the inner rotating column (89) is installed inside the component mounting cavity (83) through a bearing, the inner rotating column (89) is provided with a No. 3 component fixing groove (810) with an inner concave structure and for fixing the rotating end of the secondary pulley (715) at one end located outside the outer annular shell (81), the outer circumferential surface of the outer annular shell (81) is provided with a plurality of cylindrical convex protrusions in an annular array and in an integrated structure. A structure (85) is provided inside each of the columnar protrusion structures (85), wherein a second component movable cavity (86) is provided inside, and one end of the second component movable cavity (86) is connected to the circumferential surface of the first component movable cavity (84) through the second rod body through-hole (87), and an internal movable plate (811) capable of axial movement along the second component movable cavity (86) is arranged inside each of the second component movable cavities (86) of the outer annular shell (81), and the internal movable plate (811) is fixedly installed with a resistance rod (812) passing through the second rod body through-hole (87) on one end surface of the internal movable plate (811) facing the second rod body through-hole (87), and the resistance rod (812) is fixedly installed with an arc-shaped limit plate (88) capable of resisting the outer circumferential surface of the inner rotating column (89) on one end located inside the first component movable cavity (84), and a first coil spring (813) in a compressed state is installed on the other end of the internal movable plate (811).

6. The movable bracket for security monitoring equipment according to claim 5, characterized in that: When the inner concave surface of the arc-shaped limiting plate (88) contacts the outer circumferential surface of the inner rotating column (89), a gap exists between the inner movable plate (811) and the end surface of the second rod body through hole (87).

7. The movable bracket for security monitoring equipment according to claim 5, characterized in that: The static friction force formed by the No. 1 coil spring (813) on the arc-shaped limit plate (88) and the inner rotating column (89) makes the maximum driven torque strength between the two smaller than the maximum torque strength of the threaded structure in an undeformed state.

8. A movable bracket for security monitoring equipment according to any one of claims 1 to 7, characterized in that: It also includes two telescopic brake mechanisms (9), which are provided with a longitudinal hollow shell (91) fixedly mounted inside the movable base (1) and having a hollow structure inside, a piston plate (97) located inside the longitudinal hollow shell (91) and moving downward after being subjected to gas pressure, a No. 2 coil spring (99) located inside the longitudinal hollow shell (91) and generating an upward elastic pressure on the piston plate (97), and a support base (910) located directly below the longitudinal hollow shell (91) and moving longitudinally with the piston plate (97).

9. The movable bracket for security monitoring equipment according to claim 8, characterized in that: The telescopic brake mechanism (9) comprises a longitudinal hollow shell (91) which passes through the mounting hole (6) of the No. 2 component; the circumferential surface of the longitudinal hollow shell (91) is provided with an annular fixing plate (92) which is integrally structured with the shell and fixedly mounted on the upper surface of the movable base (1); a No. 3 component movable cavity (93) is provided inside the longitudinal hollow shell (91); a gas reserve cavity (94) is provided at the top of the No. 3 component movable cavity (93); a No. 3 rod body through hole (95) which connects the space below the shell and the bottom of the No. 3 component movable cavity (93) is provided at the bottom of the longitudinal hollow shell (91); a No. 3 rod body through hole (95) which connects the space above the shell and the top of the gas reserve cavity (94) and the inside of the longitudinal hollow shell (91) is provided with a gas reserve cavity (94) which connects the space above the shell and the top of the gas reserve cavity (94) and the inside of the longitudinal hollow shell (91) is provided with a gas reserve cavity (94) which connects the space below the shell and the bottom of the No. 3 component movable cavity (93); A gas flow passage (96) with a gas valve is installed, and a piston plate (97) capable of axially moving along the No. 3 component active chamber (93) is placed in the longitudinal hollow shell (91) located inside the No. 3 component active chamber (93), and the piston plate (97) is fixedly installed at the bottom end of the piston plate (97) with a longitudinal movable rod (98) penetrating the No. 3 rod body through-hole (95), and a supporting base (910) is fixedly installed at the bottom end of the longitudinal movable rod (98), and a No. 2 coil spring (99) in a compressed state is placed on the outer periphery of the rod body of the longitudinal movable rod (98) located inside the No. 3 component active chamber (93), and the bottom end of the No. 2 coil spring (99) abuts against the bottom end surface of the No. 3 component active chamber (93), and the top end abuts against the bottom surface of the piston plate (97).

10. The movable bracket for security monitoring equipment according to claim 9, characterized in that: The structural shape of the cross section of the No. 3 rod body through hole (95) is consistent with the structural shape of the cross section of the longitudinal movable rod (98), both of which are polygonal structures, and the structural dimensions of the cross section of the No. 3 rod body through hole (95) match the structural dimensions of the cross section of the longitudinal movable rod (98).

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