Small ultra-light electric multi-section synchronous telescopic photographing and video recording rocker arm

Abstract

The utility model relates to the technical field of photography and video recording auxiliary supporting equipment, and discloses a small ultra-light electric multi-section synchronous telescopic photography and video recording rocker arm which comprises a telescopic arm main arm, a first section telescopic arm, a second section telescopic arm, a motor power rear box and a camera bearing head frame. Guide rails are integrally formed on the corresponding inner and outer walls of each telescopic arm in the length direction; a motor and a main synchronous belt wheel are installed in the motor power rear box, a driven wheel shaft is installed at the top end of the telescopic arm main arm, a linkage transmission synchronous belt is arranged on the main synchronous belt wheel and the driven wheel shaft in a sleeving mode and driven by the motor to rotate, and the linkage transmission synchronous belt drives the first telescopic arm to stretch out and draw back. And the lower side of the arm pipe is provided with a linkage rope for driving the first-section telescopic arm and the second-section telescopic arm to synchronously stretch out and draw back. The telescopic electric rocker arm can meet the requirements of light weight, small size, portability and low cost, and meets the requirements of vast small and medium-sized film and television manufacturers on the telescopic electric rocker arm.

Description

Technical Field

[0001] This utility model relates to the field of photographic and video auxiliary support equipment technology, and more specifically, to a small, ultra-lightweight, electric, multi-section, synchronous, and retractable photographic and video jib arm. Background Technology

[0002] Camera cranes are indispensable auxiliary equipment for shooting moving shots in modern film, television, and short and long video production, and have become an essential auxiliary device in modern film and television production. With the continuous development of technology and economy, and the ever-increasing demands of film and television production, the original fixed-length camera cranes can no longer meet the more diverse and flexible needs of film and television production. Therefore, motorized telescopic camera cranes with adjustable lengths are increasingly favored and adopted by film and television creators.

[0003] However, most of the existing electric telescopic camera cranes are currently imported. Not only do they cost hundreds of thousands or even millions of yuan, but these electric telescopic camera cranes are also very large, weighing hundreds to thousands of kilograms. They require special trucks with hydraulic tailgates for transportation, and adjustment and use require the cooperation of many people. They are a kind of heavy, bulky, and very expensive high-end camera auxiliary equipment. Only large film and television crews and high-budget production programs can afford them, which is far from meeting the needs of the vast number of small and medium-sized film and television producers for telescopic electric cranes.

[0004] Therefore, it is necessary to invent a miniaturized, retractable, lightweight, portable professional electric telescopic jib arm for photography and videography, which is lightweight, small in size, portable, and low in cost, to fill the gap in the market for such products. Utility Model Content

[0005] In view of this, the present invention proposes a small, ultra-lightweight, electric, multi-section, synchronous, and retractable camera jib arm, the specific technical solution of which is as follows:

[0006] A small, ultra-lightweight, electric, multi-section, synchronously retractable camera jib arm includes a main telescopic arm, a first telescopic arm section embedded and slidably mounted within the main telescopic arm, a second telescopic arm section embedded and slidably mounted within the first telescopic arm section, a motor-driven rear box connected to the tail end of the main telescopic arm, and an adjustable-angle camera headframe connected to the head of the second telescopic arm section. Guide rails are integrally formed along the length direction on the upper and lower inner walls of the main telescopic arm, the upper and lower outer walls and inner walls of the first telescopic arm section, and the upper and lower outer walls of the second telescopic arm section. Pulley mechanisms matching the corresponding guide rails are installed on the main telescopic arm, the first telescopic arm section, and the second telescopic arm section. A motor and a rotating mechanism driven by the motor are installed in the motor-driven rear box. The main synchronous pulley is driven by a motor. A mounting port for the driven axle is located at the front end of the main telescopic boom. A linkage transmission synchronous belt is fitted onto the main synchronous pulley and the driven axle, and is driven to rotate by a motor. The upper belt of the linkage transmission synchronous belt is located outside the upper outer wall of the main telescopic boom, and the lower belt is located between the upper inner wall of the main telescopic boom and the upper outer wall of the first telescopic boom section, with the lower belt fixedly connected to the tail end of the upper outer wall of the first telescopic boom section. Linkage ropes for synchronously extending and retracting the first and second telescopic boom sections are installed on the lower outer wall of the main telescopic boom, between the lower inner wall of the main telescopic boom and the lower outer wall of the first telescopic boom section, and between the lower inner wall of the first telescopic boom and the lower outer wall of the second telescopic boom section.

[0007] Preferably, the front upper support pulley assembly and the front lower support pulley assembly of the first telescopic boom are respectively installed at the upper and lower ends of the front end of the main boom, and the front upper support pulley assembly and the front lower support pulley assembly of the first telescopic boom are respectively fitted into the upper and lower outer wall guide rails of the first telescopic boom; the rear tail end of the first telescopic boom is respectively installed at the upper and lower ends of the rear tail end of the first telescopic boom, and the rear tail upper pulley assembly and the rear tail lower pulley assembly of the first telescopic boom are respectively fitted into the upper and lower inner wall guide rails of the main boom. The front end of the first telescopic boom is equipped with the upper front support pulley group and the lower front support pulley group of the second telescopic boom, respectively. The upper front support pulley group and the lower front support pulley group of the second telescopic boom are respectively fitted into the upper and lower outer wall guide rails of the second telescopic boom. The rear end of the second telescopic boom is equipped with the upper rear tail pulley group and the lower rear tail pulley group of the second telescopic boom, respectively. The upper rear tail pulley group and the lower rear tail pulley group of the second telescopic boom are respectively fitted into the upper and lower inner wall guide rails of the first telescopic boom.

[0008] Preferably, the rollers in the first and second telescopic arm front lower support pulley groups are fixed to the eccentric shaft seats on the corresponding telescopic arms via corresponding eccentric shaft assemblies, so that the gap between the rollers of the pulley group and the corresponding guide rails is adjustable.

[0009] Preferably, a counterweight linear slide rail is installed at the top of the telescopic boom along its length, and a counterweight trolley is slidably installed on the counterweight linear slide rail. A dynamic balance counterweight is detachably installed on the counterweight trolley; the counterweight trolley is fixedly connected to the upper belt body in the linkage transmission synchronous belt.

[0010] Preferably, the linkage transmission synchronous belt is an open synchronous belt, and the two ends of the open synchronous belt are respectively connected to the two sides of the counterweight pulley.

[0011] Preferably, an adjustable rope fixing seat is installed on the outer bottom surface of the telescopic boom main arm. A mounting port for installing a guide pulley is provided at the lower end of the telescopic boom main arm, located in front of the adjustable rope fixing seat. A guide pulley for the tail end of the first telescopic boom section is installed on the outer side of its tail end. A linkage fixing block is installed on the lower wall of the second telescopic boom section near its tail end. A guide pulley for the front end of the first telescopic boom section is installed on the inner lower wall of the first telescopic boom section near its front side. A rope fixing seat for the tail end of the telescopic boom main arm is installed on the inner lower wall of the telescopic boom main arm near its tail end. The linkage rope includes a first linkage rope and a second linkage rope. One end of the first linkage rope is fixed to the adjustable rope fixing block. The first and second linkage ropes are directly and integrally connected at the linkage fixing block. One end of the first linkage rope is fixed, and the other end first passes forward around the guide pulley of the main boom of the telescopic boom, then passes backward around the guide pulley at the tail end of the first telescopic boom, and finally connects to the linkage fixing block. One end of the second linkage rope is connected to the linkage fixing block, and the other end passes around the guide pulley at the front end of the first telescopic boom, and finally connects to the rope fixing seat at the tail end of the main boom of the telescopic boom. The first linkage rope and the second linkage rope are directly and integrally connected at the linkage fixing block. When the linkage transmission synchronous belt drives the first telescopic boom to retract, the first linkage rope drives the second telescopic boom to retract synchronously. When the linkage transmission synchronous belt drives the first telescopic boom to extend, the second linkage rope drives the second telescopic boom to extend synchronously.

[0012] Preferably, adjustable angle handrails are installed on the left and right sides of the telescopic arm main arm along the length direction. Both the adjustable angle handrails and the adjustable angle camera head support frame adopt a built-in toothed disc structure to achieve angle adjustment.

[0013] Preferably, the output shaft of the motor drives the main synchronous pulley to rotate via a driving synchronous belt, and a guide pulley shaft for supporting and guiding the linkage transmission synchronous belt is also installed inside the tail end of the telescopic boom main arm.

[0014] Preferably, a timing belt fixing block for securing the lower belt body of the synchronous belt in the linkage transmission is installed on the upper outer wall of the first telescopic boom.

[0015] Preferably, a touch screen for human-machine interaction is also installed on the rear tail box of the motor-powered arm. The motor is controlled by a main control box installed at the bottom of the telescopic boom. A control handle for controlling the motor's movement is installed on the main control box, and a V-port battery is connected to the main control box.

[0016] Compared with existing technologies, the present invention provides a small, ultra-lightweight, electric, multi-section, synchronous, and retractable camera jib arm with the following advantages:

[0017] 1. This utility model adopts the integrated molding of guide rail and arm tube, which avoids the post-assembly process, improves precision and production efficiency, and greatly reduces the weight and cost of the arm assembly.

[0018] 2. This utility model adopts the method of placing the linkage rope on the lower side of the arm tube, which greatly reduces the drop difference between the left and right arms between the multi-section telescopic nested arm tubes, and better realizes the lightweight and miniaturization of the arm body.

[0019] 3. This utility model employs a unique single rope to achieve synchronous contraction and extension of multiple nested arm sections. This not only reduces the need for multiple synchronization ropes but also allows for better synchronization of contraction and extension without gaps. Users only need to adjust the length of one rope for later maintenance and adjustment, making operation much simpler. The linkage design of the single rope in this utility model also facilitates the placement of the rope below the multi-section nested arm tube, significantly reducing the drop difference between the left and right arms. This allows for a smaller drop difference between the left and right sides of the multi-section nested arm tubes, making the arm tube dimensions more compact while ensuring nested sliding. The arm tube volume can also be designed to be smaller, better achieving lightweight and miniaturized arm sections, resulting in a smaller and lighter multi-section synchronous telescopic nested structure.

[0020] 4. This utility model adds an eccentric shaft seat design to the corresponding front lower support pulley group at the front end of the telescopic arm. This allows the front lower support roller to not only automatically adjust its deflection and make better contact with the guide rail, but also allows the eccentric design of the eccentric shaft seat to be adjustable within a certain range throughout the height. This makes the double support rollers fit the rail better, the movement smoother, the friction loss less, and the maintenance easier.

[0021] 5. This utility model features an adjustable-angle armrest design, eliminating the need to disassemble the long armrests at any time. The long armrests on both sides can be adjusted to unfold when needed and easily converted into carrying handles when not in use, making it more convenient for users to use, transition between scenes, and store. In this utility model, the camera headrest also adopts a unique adjustable-angle design, allowing for the attachment of various accessories to the front end, expanding shooting options. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the external structure of a small, ultra-lightweight, electric, multi-section, synchronous, and retractable camera jib arm according to the present invention.

[0024] Figure 2 This is a schematic diagram of the connection of the internal linkage rope of a small, ultra-lightweight, electric, multi-section, synchronous, and retractable camera jib arm according to this utility model.

[0025] Figure 3 This is a partial structural view of a small, ultra-lightweight, electric, multi-section, synchronous, and retractable camera jib arm according to the present invention.

[0026] Figure 4 for Figure 3 Enlarged schematic diagram of the cross-section of the lower support pulley block of the first telescopic arm on the front side.

[0027] Figure 5 This is a schematic diagram of the structure of the first telescopic arm in this utility model.

[0028] In the diagram: 1-Telescopic boom main arm, 2-First telescopic boom section, 3-Second telescopic boom section, 4-Motor-powered rear box, 5-Camera headframe support, 6-Guide rail, 7-Motor, 8-Main synchronous belt pulley, 9-Driven pulley axle, 10-Linkage transmission synchronous belt, 11-First telescopic boom front upper support pulley assembly, 12-First telescopic boom front lower support pulley assembly, 13-First telescopic boom rear upper pulley assembly, 14-First telescopic boom rear lower lower pulley assembly, 15-Second telescopic boom front upper support pulley assembly, 16-Second telescopic boom front lower support pulley assembly, 17-Second telescopic boom rear upper pulley assembly, 18-Second telescopic boom rear lower lower pulley assembly, 19-Eccentric shaft assembly 20-Eccentric shaft seat, 21-Counterweight linear slide rail, 22-Counterweight trolley, 23-Dynamic balance counterweight, 24-Adjustable rope fixing seat, 25-Telescopic boom main boom guide pulley, 26-First telescopic boom tail end guide pulley, 27-Linkage fixing block, 28-First telescopic boom front end guide pulley, 29-Telescopic boom main boom tail end rope fixing seat, 30-First linkage rope, 31-Second linkage rope, 32-Drive synchronous belt, 33-Guide pulley shaft, 34-Synchronous belt fixing block, 35-Adjustable angle long handrail, 36-Touch screen, 37-Main control box, 38-Control handle, 39-V-port battery, 40-Linkage synchronous belt driven pulley box. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] Example:

[0033] This embodiment provides a small, ultra-lightweight, electric multi-section synchronous telescopic camera crane that meets the requirements of light weight, small size, portability, and low cost, satisfying the needs of a wide range of small and medium-sized film and television producers for telescopic electric cranes.

[0034] Specifically, the small, ultra-lightweight, electric, multi-section, synchronously retractable camera jib arm in this embodiment includes a telescopic main arm 1, a first telescopic arm 2 embedded and slidably installed in the telescopic main arm 1, a second telescopic arm 3 embedded and slidably installed in the first telescopic arm 2, a motor-powered rear box 4 connected to the tail end of the telescopic main arm 1, and a camera support headgear 5 connected to the head of the second telescopic arm 3, thus forming a three-section, two-telescopic-arm sliding telescopic main structure.

[0035] Guide rails 6 are integrally formed along the length direction on the upper and lower inner walls of the main telescopic arm 1, the upper and lower outer walls and the upper and lower inner walls of the first telescopic arm 2, and the upper and lower outer walls of the second telescopic arm 3. Pulley mechanisms that match the corresponding guide rails 6 are installed on the main telescopic arm 1, the first telescopic arm 2, and the second telescopic arm 3.

[0036] In this embodiment, the guide rail 6 is preferably a triangular guide rail, specifically, the inner and outer upper and lower triangular guide rails are integrally formed with the corresponding arm body.

[0037] Previously, all designs for electric telescopic rocker arms, both domestically and internationally, involved embedding guide rails into the inner and outer parts of the arm tube. This post-embedding method was not only costly and heavy, but also required very strict assembly processes, hindering low-cost, high-efficiency mass production. This embodiment employs an integrated molding process, combining the triangular guide rails and the arm tube. This avoids the post-assembly step, improves precision and production efficiency, and significantly reduces the weight and cost of the assembled arm.

[0038] The rear box 4 of the motor-powered telescopic boom is equipped with a motor 7 and a main synchronous pulley 8 driven by the motor 7. The top of the telescopic boom main arm 1 is provided with a mounting port for mounting a driven wheel shaft 9 (in this embodiment, the driven wheel shaft 9 is covered by a linkage synchronous belt driven wheel box 40). A linkage transmission synchronous belt 10 is fitted on the main synchronous pulley 8 and the driven wheel shaft 9 and is driven by the motor 7 to rotate. The upper belt body of the linkage transmission synchronous belt 10 is located outside the upper outer wall of the telescopic boom main arm 1, and the lower belt body of the linkage transmission synchronous belt 10 is located between the upper inner wall of the telescopic boom main arm 1 and the upper outer wall of the first telescopic boom 2, and the lower belt body is fixedly connected to the tail end of the upper outer wall of the first telescopic boom 2.

[0039] Linkage ropes for driving the first telescopic boom 2 and the second telescopic boom 3 to extend and retract synchronously are installed on the lower outer wall of the telescopic boom main boom, between the lower inner wall of the telescopic boom main boom and the lower outer wall of the first telescopic boom section, and between the lower inner wall of the first telescopic boom section and the lower outer wall of the second telescopic boom section.

[0040] In a further specific embodiment, the front upper support pulley assembly 11 and the front lower support pulley assembly 12 of the first telescopic boom are respectively installed at the upper and lower ends of the front end of the main boom 1, and the first upper support pulley assembly 11 and the first lower support pulley assembly 12 are respectively fitted into the upper and lower outer wall guide rails of the first telescopic boom; the rear tail end of the first telescopic boom 2 is respectively equipped with the rear upper pulley assembly 13 and the rear lower pulley assembly 14 of the first telescopic boom, and the first upper upper pulley assembly 13 and the first lower lower pulley assembly 14 are respectively fitted into the upper and lower inner walls of the main boom. On the guide rails of the wall; the front end of the first telescopic arm 2 is respectively equipped with the upper front support pulley group 15 and the lower front support pulley group 16 of the second telescopic arm, and the upper front support pulley group 15 and the lower front support pulley group 16 of the second telescopic arm are respectively fitted into the upper and lower outer wall guide rails of the second telescopic arm; the rear end of the second telescopic arm 3 is respectively equipped with the upper rear tail pulley group 17 and the lower rear tail pulley group 18 of the second telescopic arm, and the upper rear tail pulley group 17 and the lower rear tail pulley group 18 of the second telescopic arm are respectively fitted into the upper and lower inner wall guide rails of the first telescopic arm.

[0041] Meanwhile, the rollers in the first telescopic arm front lower support pulley group 12 and the second telescopic arm front lower support pulley group 16 are all fixed on the eccentric shaft seat 20 on the corresponding telescopic arm through the corresponding eccentric shaft assembly 19, so that the gap between the rollers of the pulley group and the corresponding guide rail 6 is adjustable.

[0042] Most small, electrically controlled telescopic rocker arms use a single support roller design, while double support rollers are generally only used in large, heavy-duty telescopic rocker arms, and these are usually not height-adjustable. This embodiment is the first to adopt a double-wheel deflectable design on a small telescopic arm, and adds a unique eccentric shaft seat design. This allows the front lower support roller to not only automatically adjust its deflection and better contact with the guide rail, but the eccentric design of the eccentric shaft seat also allows for a certain range of adjustment across the entire height (i.e., it can effectively adjust the distance between the roller and the guide rail, solving the problem of clearance fit between the roller and the guide rail). This makes the double support rollers fit the track more closely, resulting in smoother movement, less frictional wear, and easier maintenance.

[0043] In a further specific embodiment, a counterweight linear slide rail 21 is installed at the top of the telescopic boom main arm 1 along the length direction. A counterweight trolley 22 is slidably installed on the counterweight linear slide rail 21. A dynamic balance counterweight 23 is detachably installed on the counterweight trolley 22. The counterweight trolley 22 is fixedly connected to the upper belt body of the linkage transmission synchronous belt 10. When the linkage transmission synchronous belt 10 rotates, the counterweight trolley 22 and the first telescopic boom 2 move synchronously in opposite directions.

[0044] In this embodiment, the linkage transmission synchronous belt 10 is an open synchronous belt, and the two ends of the open synchronous belt are respectively connected to the two sides of the counterweight trolley 22.

[0045] In a further specific embodiment, an adjustable rope fixing seat 24 is installed on the outer bottom surface of the telescopic boom main arm 1. An installation port 2 for installing the telescopic boom main arm guide pulley 25 is opened at the lower end of the telescopic boom main arm located in front of the adjustable rope fixing seat 24. A first telescopic boom tail end guide pulley 26 is installed on the outer side of the tail end of the first telescopic boom 2. A linkage fixing block 27 is installed on the lower wall of the second telescopic boom 3 near the tail end. A first telescopic boom front end guide pulley 28 is installed on the inner lower wall of the first telescopic boom 2 near the front. A telescopic boom main arm tail end rope fixing seat 29 is installed on the inner lower wall of the telescopic boom main arm 1 near the tail end.

[0046] The linkage ropes include a first linkage rope 30 and a second linkage rope 31. One end of the first linkage rope 30 is fixed to the adjustable rope fixing seat 24, and the other end first passes forward around the guide pulley 25 of the telescopic boom main arm, then passes backward around the guide pulley 26 at the tail end of the first telescopic boom, and finally connects to the linkage fixing block 27 on the second telescopic boom 3. One end of the second linkage rope 31 is connected to the linkage fixing block 27 on the second telescopic boom 3, and the other end passes around the guide pulley 28 at the front end of the first telescopic boom, and finally connects to the rope fixing seat 29 at the tail end of the telescopic boom main arm.

[0047] As the synchronous belt 10 drives the first telescopic arm 2 to retract, the first linkage rope 30 drives the second telescopic arm 3 to retract synchronously. Specifically, as the first telescopic arm 2 retracts, it drives the guide pulley 26 at the tail end of the first telescopic arm to move backward synchronously. At this time, the lower section of the first linkage rope 30 needs to be lengthened, which in turn causes the upper section of the first linkage rope 30 to shorten accordingly. That is, the length of the first linkage rope 30 between the guide pulley 26 at the tail end of the first telescopic arm and the linkage fixing block 27 becomes shorter, thereby causing the second telescopic arm 3 to retract synchronously with the first linkage rope 30.

[0048] While the synchronous belt 10 drives the first telescopic arm 2 to extend, the second linkage rope 31 drives the second telescopic arm 3 to extend synchronously. Specifically, as the first telescopic arm 2 extends, it drives the guide pulley 28 at the front end of the first telescopic arm to move forward synchronously. At this time, the lower section of the second linkage rope 31 needs to be lengthened, which in turn causes the upper section of the second linkage rope 31 to shorten accordingly. That is, the length of the second linkage rope 31 between the guide pulley 28 at the front end of the first telescopic arm and the linkage fixing block 27 becomes shorter, thereby causing the second telescopic arm 3 to extend synchronously with the first linkage rope 30.

[0049] In this embodiment, the first linkage rope 30 and the second linkage rope 31 are directly and integrally connected at the linkage fixing block 27, thereby enabling a single rope to complete the connection, contraction and extension between multiple nested arm sections.

[0050] Currently, all electric telescopic rocker arms use a design with multiple ropes on both sides, where one side retracts while the other extends. This embodiment, however, uses a unique single rope to achieve synchronous retraction and extension of the multi-section nested arm. This not only reduces the number of synchronization ropes used but also allows for better synchronization without gaps. Furthermore, user maintenance and adjustments only require adjusting the length of one rope, making operation much simpler.

[0051] In this embodiment, the linkage design of a single rope also facilitates the placement of the rope in the space below the multi-section nested arm tube, greatly reducing the drop difference between the left and right arms of the multi-section telescopic nested arm tube. This means that the drop difference between the left and right gaps of the multi-section nested arm tube can be controlled to be smaller, making the size of the arm tube more compact while ensuring nested sliding. The arm tube volume can also be designed to be smaller, better realizing the lightweight and miniaturization of the arm body, and achieving a smaller and lighter multi-section synchronous telescopic nested structure.

[0052] In a further specific embodiment, adjustable angle long handrails 35 are installed on the left and right sides of the telescopic arm main arm 1 along the length direction. Both the adjustable angle long handrails 35 and the camera support head frame 5 adopt a built-in toothed disc structure to achieve angle adjustment.

[0053] The specific design of the built-in toothed disc structure in this embodiment can be found in CN108897184A-An angle-adjustable supplementary light and angle adjustment method and CN2703945Y-Sunshade umbrella angle adjustment device, and will not be described in detail here.

[0054] Typical electric telescopic rocker arms require the installation and removal of handles on both sides. They are installed during use and removed again when moving or storing. This embodiment uses an adjustable handle design, so there is no need to remove the long handles at any time. The long handles on both sides can be adjusted to unfold when needed, and can be adjusted to become handles when not needed, making it more convenient for users to use, move, and store.

[0055] Meanwhile, the camera support headgear 5 also features a unique adjustable angle design, allowing for the attachment of various accessories to the front, thus expanding shooting options.

[0056] In a further specific embodiment, the output shaft end of the motor 7 drives the main synchronous pulley 8 to rotate through the driving synchronous belt 32, and the tail end of the telescopic arm main arm 1 is also equipped with a guide fixed pulley shaft 33 for supporting and guiding the linkage transmission synchronous belt 10.

[0057] The first section of the telescopic boom 2 has a timing belt fixing block 34 installed on its upper outer wall to secure the lower belt body of the synchronous belt 10 in the linkage transmission.

[0058] Meanwhile, a touch screen 36 for human-machine interaction is installed on the rear tail box 4 powered by the motor. The motor 7 is controlled by the main control box 37 installed at the bottom of the telescopic boom. The main control box 37 is equipped with a control handle 38 for controlling the movement of the motor 7. A V-port battery 39 is connected to the main control box 37.

[0059] The control handle 38 mentioned above is a wired control handle, and the V-port battery 39 is a V-port universal power battery specifically for broadcasting and television.

[0060] The power supply section of this invention uses a universal V-mount battery from a camera. Considering the characteristics of the industry, portability, ease of use for users, and the need to reduce the need for users to purchase expensive dedicated power supplies, this invention is the first to adopt a special energy-efficient power management and DC-DC boost process, allowing the entire electric telescopic arm to be directly powered by the universal V-mount batteries commonly used in the film and television industry, eliminating the need for a separate external power supply or the purchase of a bulky dedicated power supply system.

[0061] The overall working process of this embodiment is as follows:

[0062] The V-port battery 39 is connected to the main control box 37. The main control box 37 receives control from the control handle 38 to drive the motor 7. The output shaft of the motor 7 drives the main synchronous pulley 8 to rotate through the drive synchronous belt 32. The main synchronous pulley 8 drives the linkage transmission synchronous belt 10 to rotate. The lower belt of the linkage transmission synchronous belt 10 drives the first telescopic arm 2 to move. A single linkage rope enables the first telescopic arm 2 and the second telescopic arm 3 to move synchronously. At the same time, the upper belt of the linkage transmission synchronous belt 10 drives the counterweight pulley 22 to move synchronously in the opposite direction, realizing electric synchronous dynamic balance telescopic movement to ensure the stable and safe use of the entire camera crane.

[0063] In this embodiment, a small, ultra-lightweight, electric, multi-section, synchronous, and telescopic camera jib arm is mounted on a support gimbal unit that can tilt and rotate horizontally. The lower end of the support gimbal unit has a clampable European head interface for mounting on a tripod or other support equipment that can support the telescopic arm.

[0064] Furthermore, the included horizontal turntable interface for supporting the gimbal can have a variety of interfaces commonly used in the film and television industry, such as the European head interface, the 100-150mm flat cup tripod interface, and the Michell thread interface. As an interchangeable design, it can be installed on common support brackets such as columns, tripods, wheeled vehicles, and dolly vehicles, and can also be installed on vehicles or ships for other applications, forming various forms such as vehicle-mounted telescopic rocker arms and ship-mounted telescopic rocker arms.

[0065] Furthermore, the front-end camera support frame in this embodiment also has a variety of expandable implementation methods, including but not limited to adding a shock-absorbing disc, a rotary damper or a linkage damper, an electronic automatic leveling head, etc. These expanded applications are also extended implementation forms of the camera crane body of this utility model.

[0066] This utility model discloses a small, ultra-lightweight, electric multi-section synchronous telescopic camera crane. While retaining all the features of professional electric telescopic camera cranes, it greatly reduces the size, weight, and operating cost, achieving miniaturization, ultra-lightweight design, ultra-portability, ultra-practicability, and ultra-low cost. It provides an excellent and unique solution for popularizing the use of electric telescopic camera cranes in the film and television production field.

[0067] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0068] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A small, ultra-lightweight, electric, multi-section, synchronous, retractable camera jib arm, characterized in that, The system includes a telescopic boom main arm, a first telescopic arm section embedded and slidably installed within the main arm, a second telescopic arm section embedded and slidably installed within the first telescopic arm section, a motor-driven rear box connected to the tail end of the main arm, and a camera headframe connected to the head of the second telescopic arm section. Guide rails are integrally formed along the length direction on the upper and lower inner walls of the main arm, the upper and lower outer walls and inner walls of the first telescopic arm section, and the upper and lower outer walls of the second telescopic arm section. Pulley mechanisms matching the corresponding guide rails are installed on the main arm, the first telescopic arm section, and the second telescopic arm section. A motor and a main synchronous pulley driven by the motor are installed inside the motor-driven rear box. A mounting port for installing the driven pulley shaft is provided at the front of the top. A linkage transmission synchronous belt is fitted onto the main synchronous pulley and the driven pulley shaft and is driven to rotate by a motor. The upper belt body of the linkage transmission synchronous belt is located outside the upper outer wall of the telescopic boom main arm, and the lower belt body of the linkage transmission synchronous belt is located between the upper inner wall of the telescopic boom main arm and the upper outer wall of the first telescopic boom section, and the lower belt body is fixedly connected to the tail end of the upper outer wall of the first telescopic boom section. Linkage ropes for driving the first and second telescopic boom sections to extend and retract synchronously are installed on the lower outer wall of the telescopic boom main arm, between the lower inner wall of the telescopic boom main arm and the lower outer wall of the first telescopic boom section, and between the lower inner wall of the first telescopic boom section and the lower outer wall of the second telescopic boom section.

2. The small, ultra-lightweight, electric, multi-section, synchronous, retractable camera crane according to claim 1, characterized in that, The front end of the telescopic boom is equipped with a first-section upper front support pulley assembly and a first-section lower front support pulley assembly, respectively, which are respectively fitted into the upper and lower outer wall guide rails of the first-section telescopic boom. The rear end of the first-section telescopic boom is equipped with a first-section upper rear tail pulley assembly and a first-section lower rear tail pulley assembly, which are respectively fitted into the upper and lower inner wall guide rails of the telescopic boom main boom. The front end of the first telescopic boom is equipped with the upper front support pulley group and the lower front support pulley group of the second telescopic boom, respectively. The upper front support pulley group and the lower front support pulley group of the second telescopic boom are respectively fitted into the upper and lower outer wall guide rails of the second telescopic boom. The rear end of the second telescopic boom is equipped with the upper rear tail pulley group and the lower rear tail pulley group of the second telescopic boom, respectively. The upper rear tail pulley group and the lower rear tail pulley group of the second telescopic boom are respectively fitted into the upper and lower inner wall guide rails of the first telescopic boom.

3. The small, ultra-lightweight, electric, multi-section, synchronous, retractable camera jib arm according to claim 2, characterized in that, The rollers in the first and second sections of the telescopic boom's front lower support pulley group are fixed to the eccentric shaft seats on the corresponding telescopic booms via corresponding eccentric shaft assemblies, making the gap between the rollers of the pulley group and the corresponding guide rails adjustable.

4. The small, ultra-lightweight, electric, multi-section, synchronous, retractable camera jib arm according to claim 1, characterized in that, The top of the telescopic boom is equipped with a counterweight linear slide rail along its length. A counterweight trolley is slidably mounted on the counterweight linear slide rail. A dynamic balance counterweight is detachably mounted on the counterweight trolley. The counterweight trolley is fixedly connected to the upper belt of the synchronous belt of the linkage transmission.

5. A small, ultra-lightweight, electric, multi-section, synchronous, retractable camera crane according to claim 4, characterized in that, The linkage transmission timing belt is an open timing belt, and the two ends of the open timing belt are respectively connected to the two sides of the counterweight pulley.

6. A small, ultra-lightweight, electric, multi-section, synchronous, retractable camera crane according to claim 1, characterized in that, An adjustable rope fixing seat is installed on the outer bottom surface of the telescopic boom main arm. A mounting port for installing a guide pulley is located at the lower end of the telescopic boom main arm, in front of the adjustable rope fixing seat. A guide pulley for the tail end of the first telescopic boom section is installed on the outer side of its tail end. A linkage fixing block is installed on the lower wall of the second telescopic boom section near its tail end. A guide pulley for the front end of the first telescopic boom section is installed on the inner lower wall of the first telescopic boom section near its front side. A rope fixing seat for the tail end of the telescopic boom main arm is installed on the inner lower wall of the telescopic boom main arm near its tail end. The linkage rope includes a first linkage rope and a second linkage rope. One end of the first linkage rope is connected to the adjustable rope fixing seat. One end of the first linkage rope is fixed, and the other end first passes forward around the guide pulley of the main boom of the telescopic boom, then passes backward around the guide pulley at the tail end of the first telescopic boom, and finally connects to the linkage fixing block; one end of the second linkage rope is connected to the linkage fixing block, and the other end passes around the guide pulley at the front end of the first telescopic boom, and finally connects to the rope fixing seat at the tail end of the main boom of the telescopic boom. The first linkage rope and the second linkage rope are directly and integrally connected at the linkage fixing block; while the linkage transmission synchronous belt drives the first telescopic boom to retract, the first linkage rope drives the second telescopic boom to retract synchronously; while the linkage transmission synchronous belt drives the first telescopic boom to extend, the second linkage rope drives the second telescopic boom to extend synchronously.

7. A small, ultra-lightweight, electric, multi-section, synchronous, retractable camera crane according to claim 1, characterized in that, Adjustable angle handrails are installed on the left and right sides of the telescopic boom along its length. Both the adjustable angle handrails and the camera head support frame adopt a built-in toothed disc structure to achieve angle adjustment.

8. A small, ultra-lightweight, electric, multi-section, synchronous, retractable camera crane according to claim 1, characterized in that, The output shaft of the motor drives the main synchronous belt pulley to rotate via the drive synchronous belt. The tail end of the telescopic boom also has a guide pulley shaft installed to support and guide the linkage transmission synchronous belt.

9. A small, ultra-lightweight, electric, multi-section, synchronous, retractable camera crane according to claim 1, characterized in that, The upper outer wall of the first telescopic boom is equipped with a timing belt fixing block for securing the lower belt body of the synchronous belt in the linkage transmission.

10. A small, ultra-lightweight, electric, multi-section, synchronous, retractable camera jib arm according to claim 1, characterized in that, A touch screen for human-machine interaction is also installed on the rear box of the motor-powered arm. The motor is controlled by a main control box installed at the bottom of the telescopic boom. A control handle for controlling the motor's movement is installed on the main control box, which is also connected to a V-port battery.

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