Electric lifting monitoring platform of automatic driving security vehicle

Abstract

An electric lifting monitoring platform of an automatic driving security vehicle comprises a drive-by-wire electric lifting device and a pan-tilt monitoring ball machine, the drive-by-wire electric lifting device comprises an upper frame, a lower frame, a telescopic assembly and a power mechanism, and the telescopic assembly comprises two sets of X-shaped crossed connecting rods formed by sequentially hinging a plurality of X-shaped connecting rods; the X-shaped connecting rods at the tops and the bottoms of the two groups of X-shaped crossed connecting rods are connected through first rotating shafts and second rotating shafts, the two ends of the two first rotating shafts are rotatably connected to the upper frame and the lower frame respectively, and the two ends of the second rotating shafts are slidably arranged on inner side rails of the upper frame and the lower frame respectively through rollers; the power mechanism comprises an arc-shaped plate and a motor driving the arc-shaped plate to rotate, and the arc-shaped plate is fixedly connected with the rack rod at the lowest end. According to the utility model, the contraction height of the telescopic assembly is only formed by the accumulation of the thicknesses of the plurality of X-shaped connecting rods, and the contraction height can be minimized, so that the lifting requirements of the security vehicle monitoring pan-tilt monitoring ball machine in different scenes are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the security vehicle technical field, more specifically, it is a kind of electric lifting monitoring platform of automatic driving security vehicle. BACKGROUND

[0002] At present, with the continuous development of mobile robot technology, some robots with mobile ability can be applied to the security and protection field. By patrolling in a specific area, the entire area can be patrolled and monitored. Once an abnormal situation is found, an alarm will be sent immediately to notify relevant personnel to handle it. Most of the existing security robots use hydraulic lifting mechanisms to drive the monitoring equipment to rise or fall to meet the needs of security patrol in various scenes. However, the stroke of the hydraulic lifting mechanism is not easy to control, and the reaction speed is relatively slow, which makes it difficult to meet the working needs of the security robot.

[0003] To overcome the above shortcomings, a security robot is disclosed in Chinese patent publication No. CN 108500991A, which includes a shell, a bottom plate, wheels, a front wheel damping and wrist group structure, a key collection and locking structure, a multi-degree-of-freedom telescopic structure, a heat dissipation system, and a controller. The multi-degree-of-freedom telescopic structure includes a fixed support, an electric push rod, a spring guide wire, a sleeve, a damping table, and a camera. The electric push rod passes through the fixed support and is connected to a bracket. The electric push rod is circumferentially wrapped with a spring guide wire, which is a spring spiral guide wire. The spring guide wire is connected to the camera. The outer circumference of the spring guide wire is provided with a sleeve, and the top end of the sleeve is connected to the bracket. The upper end of the bracket is connected to the damping table, and the upper end of the damping table is connected to the camera with a gimbal. The electric push rod includes a drive motor, a drive motor support pipe, a worm, a lifting screw, and a travel switch. The drive motor support pipe is arranged in the electric push rod. The drive motor is installed on the drive motor support pipe. The output shaft of the drive motor is connected to the worm, and the worm is connected to the lifting screw.

[0004] Although this patent solves the problem of hydraulic lifting being not easy to control and slow lifting speed. However, the camera in this patent mainly relies on the rotation of the worm to drive the lifting screw to descend, and the spring spiral guide wire wrapped around the circumference of the screw contracts to pull the sleeve downward. Since the drive motor is fixed on the fixed support through the motor support pipe, and the spring spiral guide wire is wrapped around the circumference of the screw, the minimum height of the entire camera descent is limited by the sum of the height of the fixed support, the length of the spring spiral guide wire when it is contracted to the shortest state, and the length of the sleeve, resulting in a relatively large height from the roof of the security robot, which makes it difficult to meet the needs of security patrol in various scenes. In addition, this way of driving the screw to lift by driving the worm with the drive motor requires high self-locking force of the drive motor, and is prone to shaking due to the movement of the security robot, which has poor stability. Therefore, we provide an electric lifting monitoring platform for automatic driving security vehicles. Utility Model Content

[0005] This utility model provides an electric lifting monitoring platform for autonomous driving security vehicles. Its main purpose is to overcome the shortcomings of existing methods that use worm gears, lead screws, and spring spiral wires to drive the lifting of cameras. When the camera is lowered to its lowest position, the distance between it and the roof of the vehicle is relatively large, which makes it difficult to meet the needs of security patrols in various scenarios.

[0006] The present invention adopts the following technical solution:

[0007] An electric lifting monitoring platform for an autonomous security vehicle, installed on the roof of the vehicle, includes a wire-controlled electric lifting device and a pan-tilt-zoom (PTZ) camera mounted on top of the wire-controlled electric lifting device. The wire-controlled electric lifting device includes an upper frame, a lower frame, a telescopic assembly, and a power mechanism for extending or retracting the telescopic assembly. The telescopic assembly includes two sets of symmetrically arranged X-shaped cross links, each set consisting of several X-shaped links sequentially hinged together. Each X-shaped link in one set is fixedly connected to a corresponding X-shaped link in the other set via a frame rod. The top ends of the two X-shaped connecting rods at the top of the two sets of X-shaped cross connecting rods are respectively connected by a first rotating shaft and a second rotating shaft. The bottom ends of the two X-shaped connecting rods at the bottom of the two sets of X-shaped cross connecting rods are also respectively connected by a first rotating shaft and a second rotating shaft. The two ends of the two first rotating shafts are rotatably connected to the upper frame and the lower frame, respectively. The two ends of the two second rotating shafts are slidably mounted on the inner rails of the upper frame and the lower frame via rollers. The power mechanism includes an arc-shaped plate and a motor that drives the arc-shaped plate to rotate. The arc-shaped plate is fixedly connected to the lowest frame rod.

[0008] In a preferred embodiment, the power mechanism includes two motors, which are symmetrically mounted in the lower frame via an L-shaped bracket. The output shaft of each motor is connected to a reversing gear set, and the output end of each gear set is connected to a driven gear. The two driven gears are connected by a rotating shaft, and a light wheel is fixedly connected to the rotating shaft. The light wheel contacts the inner arc-shaped surface of the arc plate.

[0009] In a preferred embodiment, the two ends of the frame rod are respectively fixed to the inner side of the hinge joint where two adjacent X-shaped cross links are hinged to each other in each group of X-shaped cross links, and the frame rod is parallel to the second rotating shaft.

[0010] In a preferred embodiment, a limit switch is also provided on the side of the X-shaped cross link. The limit switch includes a switch bracket and a highest contact switch and a lowest contact switch mounted on the switch bracket. A contact block that cooperates with the highest contact switch and the lowest contact switch is installed at the intersection of the X-shaped link.

[0011] In a preferred embodiment, the power mechanism of the aforementioned wire-controlled electric lifting device is connected to the TBOX vehicle terminal via a CAN bus, and the TBOX vehicle terminal is connected to the video monitoring platform via a wireless network.

[0012] In a preferred embodiment, the aforementioned PTZ camera has a built-in adjustment mechanism, which is connected to the video surveillance platform via a wireless network.

[0013] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages:

[0014] 1. The electric lifting monitoring platform of this utility model includes a wire-controlled electric lifting device comprising an upper frame, a lower frame, and a telescopic assembly connecting the two. The telescopic assembly includes two sets of X-shaped cross links, each hinged together by multiple X-shaped connecting rods. When the telescopic assembly is retracted to its minimum state, each X-shaped connecting rod retracts and folds into a straight line. The height of the telescopic assembly is only composed of the cumulative thickness of several X-shaped connecting rods. Compared with telescopic assemblies with hydraulic rods, lead screws, or other structures, its retracted height can be minimized, meeting the lifting requirements of security vehicle monitoring PTZ cameras in different scenarios.

[0015] 2. The wire-controlled electric lifting device of this structure uses upper and lower frames as support components and two sets of X-shaped cross links as telescopic components. Its telescopic movement is stable and unaffected by the movement of the security vehicle. Furthermore, the drive motor only needs to be able to rotate the frame rods connected to the X-shaped links, and its self-locking force requirement is not high. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation of this utility model.

[0017] Figure 2 This is a schematic diagram of the electric lifting monitoring platform of this utility model extended to its highest position. Figure 1 .

[0018] Figure 3 This is a schematic diagram of the electric lifting monitoring platform of this utility model extended to its highest position. Figure 2 .

[0019] Figure 4 This is a schematic diagram of the electric lifting monitoring platform of this utility model retracted to its lowest state.

[0020] Figure 5 This is a control principle diagram of the present invention. Detailed Implementation

[0021] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Many details are described below to provide a comprehensive understanding of this utility model; however, those skilled in the art can implement this utility model without these details. Well-known components, methods, and processes will not be described in detail below.

[0022] Reference Figure 1 This utility model provides an electric lifting monitoring platform for an autonomous driving security vehicle, which is installed on the roof of the security vehicle 1 and includes a wire-controlled electric lifting device 10 and a pan-tilt monitoring PTZ camera 20 installed on the top of the wire-controlled electric lifting device.

[0023] Reference Figure 2 The wire-controlled electric lifting device includes an upper frame 11, a lower frame 12, a telescopic assembly, and a power mechanism for driving the telescopic assembly to extend or retract. The telescopic assembly includes two sets of X-shaped cross links 13 arranged symmetrically on the left and right, and each set of X-shaped cross links 13 is formed by a plurality of X-shaped links 131 hinged together in sequence.

[0024] Reference Figure 2 and Figure 3 The two bottom ends of the X-shaped connecting rod 131 at the bottom of one set of X-shaped cross links 13 are connected to the two bottom ends of the X-shaped connecting rod 131 at the bottom of another set of X-shaped cross links 13 via a first rotating shaft 132 and a second rotating shaft 133, respectively. Similarly, the two top ends of the X-shaped connecting rod 131 at the top of the same set of X-shaped cross links 13 are also connected to the two top ends of the X-shaped connecting rod 131 at the bottom of another set of X-shaped cross links 13 via a first rotating shaft 132 and a second rotating shaft 133, respectively. The two first rotating shafts are parallel to each other and located on the same side of the X-shaped connecting rod 131. The two ends of the two first rotating shafts 132 are rotatably connected to the upper frame 11 and the lower frame 12, respectively. The two second rotating shafts are also parallel to each other and located on the other side of the X-shaped connecting rod 131. The two ends of the two second rotating shafts 133 are slidably mounted on the inner rails of the upper frame 11 and the lower frame 12, respectively, via rollers 134.

[0025] Reference Figure 2 and Figure 3 Each X-shaped link 131 in the same group of X-shaped cross links 13 is fixedly connected to its corresponding X-shaped link 131 in another group of X-shaped cross links 13 via a frame rod 135. Preferably, both ends of the frame rod 135 are fixed to the inner side of the hinge joint where two adjacent X-shaped cross links in each group of X-shaped cross links 131 are hinged to each other, and the frame rod 135 is parallel to the second rotating shaft 133.

[0026] Reference Figures 2 to 4The aforementioned power mechanism includes an arc-shaped plate 141 and a motor 142 that drives the arc-shaped plate 141 to rotate. The arc-shaped plate 141 is fixedly connected to the lowest frame rod 135. Preferably, there are two motors 142, each symmetrically mounted within the lower frame 12 via an L-shaped bracket 143. The output shaft of each motor 142 is connected to a reversing gear set 144, and the output end of each gear set 144 is connected to a driven gear 145. The two driven gears 145 are connected by a rotating shaft 146, and a smooth wheel 147 is fixedly connected to the rotating shaft. The smooth wheel 147 contacts the inner arc-shaped surface of the arc-shaped plate 141. When the motor 142 rotates, it drives the reversing gear set 144 to rotate, which in turn transmits the rotation to the driven gear 145, the rotating shaft 146, and the smooth wheel 147 in sequence. The smooth wheel 147 then drives the arc-shaped plate 141 to rotate, thereby causing the frame rod 135 to swing upward or downward. When the frame rod 135 swings upward, the telescopic assembly extends upward; when the frame rod 135 swings downward, the telescopic assembly retracts downward.

[0027] Reference Figure 2 and Figure 3 The X-shaped cross link 13 is also equipped with a limit switch on its side. The limit switch includes a switch bracket 153 and a highest contact switch 151 and a lowest contact switch 152 mounted on the switch bracket. A contact block 154 that cooperates with the highest contact switch 151 and the lowest contact switch 152 is installed at the intersection of the bottom X-shaped link 131. When the contact block 154 moves upward with the rotation of the X-shaped link and contacts the highest contact switch 151, the highest contact switch 151 is triggered to work, cutting off the signal for motor operation; similarly, when the contact block 154 moves downward with the rotation of the X-shaped link 131 and contacts the lowest contact switch 152, the lowest contact switch 152 is triggered to work, cutting off the signal for motor operation.

[0028] Reference Figure 5 The wire-controlled electric lifting device connects to the TBOX vehicle-mounted terminal via a CAN bus, and the TBOX vehicle-mounted terminal connects to the video surveillance platform via a wireless network. Depending on the scenario, the video surveillance platform issues commands, which are transmitted to the TBOX vehicle-mounted terminal via the wireless network. Upon receiving the CAN bus commands, the CAN bus control module outputs power to raise or lower the device, causing the motor inside the wire-controlled electric lifting device to rotate forward or reverse, thus raising or lowering the PTZ camera. This meets the requirements for raising PTZ cameras in special scenarios, increasing the monitoring range and improving the recognition rate. The wire-controlled electric lifting device includes height feedback, allowing the video surveillance platform to obtain the current height of the PTZ camera in real time.

[0029] Reference Figure 5The aforementioned PTZ camera 20 has a built-in adjustment mechanism, which is connected to the video surveillance platform via a wireless network. The internal motor of the PTZ camera can be controlled via wireless network communication technology on the integrated video surveillance platform, including direction adjustment, focus adjustment, and aperture adjustment. The PTZ camera can achieve 360° horizontal rotation and ±90° vertical rotation.

[0030] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. An electric lifting monitoring platform for an autonomous driving security vehicle, installed on the roof of the security vehicle, comprising a wire-controlled electric lifting device and a pan-tilt-zoom (PTZ) camera installed on top of the wire-controlled electric lifting device, characterized in that: The wire-controlled electric lifting device includes an upper frame, a lower frame, a telescopic assembly, and a power mechanism for driving the telescopic assembly to extend or retract. The telescopic assembly includes two sets of X-shaped cross links arranged symmetrically on the left and right. Each set of X-shaped cross links is formed by several X-shaped links hinged sequentially. Each X-shaped link in one set of X-shaped cross links is fixedly connected to the corresponding X-shaped link in the other set of X-shaped cross links via a frame rod. The top ends of the two X-shaped links at the top of the two sets of X-shaped cross links are respectively connected by a first rotating shaft and a second rotating shaft. The bottom ends of the two X-shaped links at the bottom of the two sets of X-shaped cross links are also respectively connected by a first rotating shaft and a second rotating shaft. The two ends of the two first rotating shafts are rotatably connected to the upper frame and the lower frame, respectively. The two ends of the two second rotating shafts are slidably mounted on the inner rails of the upper frame and the lower frame via rollers. The power mechanism includes an arc-shaped plate and a motor for driving the arc-shaped plate to rotate. The arc-shaped plate is fixedly connected to the lowest frame rod.

2. The electric lifting monitoring platform for an autonomous driving security vehicle as described in claim 1, characterized in that: The power mechanism includes two motors, which are symmetrically mounted in the lower frame via an L-shaped bracket. The output shaft of each motor is connected to a reversing gear set, and the output end of each gear set is connected to a driven gear. The two driven gears are connected by a rotating shaft, and a light wheel is fixedly connected to the rotating shaft. The light wheel is in contact with the inner arc-shaped surface of the arc plate.

3. The electric lifting monitoring platform for an autonomous driving security vehicle as described in claim 1, characterized in that: The two ends of the frame rod are respectively fixed to the inner side of the hinge joint where two adjacent X-shaped cross links are hinged to each other in each group of X-shaped cross links, and the frame rod is parallel to the second rotating shaft.

4. The electric lifting monitoring platform for an autonomous driving security vehicle as described in claim 1, characterized in that: A limit switch is also provided on the side of the X-shaped cross link. The limit switch includes a switch bracket and a highest contact switch and a lowest contact switch installed on the switch bracket. A contact block that cooperates with the highest contact switch and the lowest contact switch is installed at the intersection of the X-shaped link.

5. The electric lifting monitoring platform for an autonomous driving security vehicle as described in claim 1, characterized in that: The power mechanism of the wire-controlled electric lifting device is connected to the TBOX vehicle terminal via a CAN bus, and the TBOX vehicle terminal is connected to the video monitoring platform via a wireless network.

6. The electric lifting monitoring platform for an autonomous driving security vehicle as described in claim 5, characterized in that: The PTZ camera has a built-in adjustment mechanism, which is connected to the video surveillance platform via a wireless network.

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