Vehicle rear hopper lifting system for RC model vehicle and control method of vehicle rear hopper lifting system

Abstract

The invention discloses a car rear hopper lifting system for an RC model car and a control method of the car rear hopper lifting system, and relates to the related technical field of RC model cars, the car rear hopper lifting system comprises a main support, the main support is provided with a first-stage lifting mechanism, a second-stage lifting mechanism, a third-stage lifting mechanism and a fourth-stage lifting mechanism, one end of the first-stage lifting mechanism is rotatably installed at one end of the main support, and the other end of the second-stage lifting mechanism is rotatably installed at the other end of the main support; one end of the second-stage lifting mechanism is rotatably installed at the other side end of the first-stage lifting mechanism, one end of the third-stage lifting mechanism is rotatably installed at the other side end of the second-stage lifting mechanism, and the fourth-stage lifting mechanism is rotatably installed at the other side end of the third-stage lifting mechanism. According to the invention, mainly through the structural design of the four-stage lifting mechanism and the control method of sequential stretching or wave stretching, the technical problems of travel, stability, control, safety and the like which exist in the RC model car lifting field for a long time are solved, and the comprehensive control system with high performance, high reliability and high simulation degree and the control method thereof are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of RC model cars, in particular to a rear hopper lifting system for RC model cars and a control method thereof. BACKGROUND

[0002] In the field of RC model cars, players usually like to pursue realistic function simulation of RC model cars. For example, models such as self-unloading trucks are usually equipped with a liftable rear hopper. The lifting system for controlling the rear hopper is one of the core function modules of such models, and its performance is directly related to the simulation degree, playability and reliability of the model.

[0003] At present, the existing RC model car rear hopper lifting schemes mainly have the following types, and each type has its technical bottleneck: 1. Single-stage hydraulic or lead screw driving scheme: This scheme usually uses a servo driver or a micro motor to simulate a hydraulic cylinder or drive a single lead screw to directly lift or pull the rear hopper. The obvious defect of this scheme is that the lifting stroke is severely limited. Due to the limited extension length of the single-stage structure, the lifting height of the rear hopper is insufficient, and the realistic visual effect of large span and multi-stage extension such as real ladder fire trucks cannot be achieved, which seriously affects the simulation degree and application scenarios of the model.

[0004] 2. Simple multi-stage scissor support scheme: This scheme uses a single servo driver to drive a group of scissor supports to achieve height expansion. Although the stroke is increased, the structure stability is poor, especially when subjected to lateral force, it is easy to deform or even collapse. At the same time, the scissor supports need a large transverse space during movement, which contradicts the compact layout of the model car chassis, and it is difficult to maintain high precision and rigidity in the extended state, and the load capacity is weak.

[0005] 3. Preliminary coordination scheme based on multiple servo drivers: In order to obtain greater lifting height and stronger load capacity, some high-end models try to use multiple servo drivers. However, the existing coordination control method is very simple, and all servo drivers are started and run synchronously. This simple control strategy brings a series of problems: first, the system will generate a huge peak current at the starting moment, which will cause great pressure on the battery and electronic governor of the model, and may cause voltage drop and reset of the control system. Second, the mechanical structure lacks fine coordination, and motion interference and internal stress are easy to occur between multiple motion units, causing lifting process to be stuck, shaking, and even damaging the gears or transmission parts of the servo driver, and the system reliability is low.

[0006] 4. The shortcomings of the transmission mode and the guide structure: in terms of transmission, single rope transmission or connecting rod transmission has its own disadvantages, rope transmission has the problems of easy wear and tear, stretching deformation leading to poor positioning accuracy, and possible winding; while the traditional rigid connecting rod transmission lacks spatial adaptability and is difficult to arrange in complex multi-stage motion structure. In addition, most of the existing schemes lack effective motion guide mechanism, which leads to the easy deviation and shaking of the lifting mechanism during the motion, further reducing the stability and positioning accuracy of the motion.

[0007] In summary, there is an urgent need for an innovative technical solution in the field to solve the comprehensive technical problems of the existing RC model car rear hopper lifting system in terms of lifting stroke, structural stability, motion accuracy, control intelligence and system reliability. SUMMARY

[0008] The purpose of the present application is to provide a rear hopper lifting system for RC model cars and a control method thereof, which aims to solve the above technical problems. The present application mainly solves the long-standing technical problems of stroke, stability, control and safety in the field of RC model car lifting through the structural design of four-stage lifting mechanism and the control method of sequential extension or wave-like extension, and realizes a comprehensive control system with high performance, high reliability and high simulation degree and its control method.

[0009] In order to achieve the above purpose, the present application realizes the following technical scheme: A rear hopper lifting system for RC model cars, comprising a total support, wherein a first-stage lifting mechanism, a second-stage lifting mechanism, a third-stage lifting mechanism and a fourth-stage lifting mechanism are arranged on the total support, one end of the first-stage lifting mechanism is rotatably installed at one end of the total support, one end of the second-stage lifting mechanism is rotatably installed at the other end of the first-stage lifting mechanism, one end of the third-stage lifting mechanism is rotatably installed at the other end of the second-stage lifting mechanism, and the fourth-stage lifting mechanism is rotatably installed at the other end of the third-stage lifting mechanism.

[0010] Preferably, the total support comprises a support chassis, support rods are symmetrically arranged on both sides of the support chassis, a support beam is arranged between one end of the two support rods, a first-stage lifting transfer slot and a turning guide slot are arranged on the outer side of the support beam; One end of the support rod close to the beam is provided with an L-shaped guide on the outer side, and a straight guide slot is arranged on the outer end of the L-shaped guide; A driving installation position is arranged on the chassis, and a pull rope guide slot is further arranged on the front side of the driving installation position A pull rope guide frame is arranged on the outer side of the driving installation position, the pull rope guide frame is fixed on the support rod, and a limit rope guide slot is arranged on the upper end of the pull rope guide frame.

[0011] Preferably, the first lifting mechanism comprises a first servo driver, a traction rope and a first support, the first servo driver is fixedly installed on the total support, and a rotating rod is arranged on the output end of the first servo driver; one end of the traction rope is rotatably installed on the outer end of the rotating rod, and the other end is rotatably installed on the first support; one end side of the first support is rotatably installed on the total support. One end of the first support is provided with a first rotating adapter buckle connected with the total support, and the other end is provided with a first rotating adapter slot rotatably connected with the second support; and the middle bottom surface of the first support is provided with a rope guide groove.

[0012] Preferably, the second lifting mechanism comprises a second servo driver, a traction rope and a second support, the second servo driver is fixedly installed on the total support, and a rotating rod is arranged on the output end of the second servo driver; one end of the traction rope is rotatably installed on the outer end of the rotating rod, and the other end is rotatably installed on the second support; the second support is arranged in a stacked manner with the first support; one end side of the second support is rotatably installed on the first support, and the other end side of the second support is rotatably connected with the third lifting mechanism.

[0013] Preferably, the two ends of the traction rope are respectively provided with a first adapter and a second adapter, the traction rope is rotatably connected with the connecting rod through the first adapter, and is rotatably connected with the first support or the second support through the second adapter; a plurality of limiting buckles are arranged on the traction rope, and the traction rope is clamped in the rope guide groove through the limiting buckles.

[0014] Preferably, the third lifting mechanism comprises a third servo driver, a third lifting rod and a third support, the third servo driver is fixedly installed on the second support, and a rotating arm is arranged on the output end of the third servo driver; one end of the third lifting rod is rotatably connected with the rotating arm, and the other end is rotatably connected with the fourth lifting mechanism; the third support is arranged on the other outer side of the second support away from the first support, and is arranged in a stacked manner with the second support; one end side of the third support is rotatably connected with the second lifting mechanism, and the other end side of the third support is rotatably connected with the fourth lifting mechanism.

[0015] Preferably, the fourth lifting mechanism comprises a fourth servo driver, a fourth lifting rod and a fourth support, the fourth servo driver is fixedly installed on the third support, and a rotating arm is arranged on the output end of the fourth servo driver; one end of the fourth lifting rod is rotatably connected with the rotating arm, and the other end is rotatably connected with one end side of the fourth support; the fourth support is arranged on the other side of the third support away from the second support in a stacked manner; one end side of the fourth support is rotatably connected with one end side of the third support.

[0016] A method for controlling the lifting of a vehicle rear hopper of an RC model vehicle, comprising the vehicle rear hopper lifting system of any one of the preceding claims, and further comprising the following steps: S1, control signal input: sending a control signal from a remote controller to a receiving end, and the receiving end transmits the signal to the corresponding servo driver control circuit after signal analysis; S2, servo driver working: after receiving the control signal, the internal motor of the servo driver rotates by a corresponding angle according to the signal instruction; when the rear hopper needs to be lifted, the control circuit sends a signal for the servo driver to rotate forward; when the rear hopper needs to be lowered, the control circuit sends a signal for the servo driver to rotate reversely; S3, pulling the support to move: when the servo driver rotates, the support is lifted or lowered by a traction rope or a lifting rod; if the support is lifted or lowered by the traction rope, the rotating rod on the servo driver retracts or releases the traction rope, thereby lifting or lowering the support; if the lifting rod is used, the servo driver drives the lifting rod through the rotation of the rocker arm, thereby making the support move linearly up and down; S4, lifting the rear hopper: the lifting movement of the support is transmitted to the vehicle rear hopper through mechanical connection, so as to realize the lifting or lowering of the rear hopper; when the rear hopper needs to be lowered, the control circuit sends a signal to control the servo driver to reverse, so that the support can be pulled down by the traction rope or the lifting rod, thereby lowering the rear hopper.

[0017] Preferably, in step S3, when the servo driver receives the forward rotation signal sent by the control circuit, the first-level servo driver and the second-level servo driver first work synchronously to lift the first-level support and the second-level support to a set height, forming a stable intermediate support platform; after the second-level support is stable, the third-level servo driver starts to work to lift the third-level support to a set height; after the third-level support is stable, the fourth-level servo driver starts to work to lift the fourth-level support to a set height, thereby completing the lifting of the rear hopper.

[0018] Preferably, in step S3, when the servo driver receives the forward rotation signal sent by the control circuit, the first-level servo driver, the second-level servo driver, the third-level servo driver and the fourth-level servo driver are started in turn according to equal time differences of 30-60 ms, so that the first-level support, the second-level support, the third-level support and the fourth-level support form a continuous lifting movement.

[0019] The vehicle rear hopper lifting system for RC model vehicles and the control method thereof have the following beneficial effects: The vehicle rear hopper lifting system for RC model vehicles adopts a stacked layout mode in which four lifting mechanisms are connected in turn, so that the lifting stroke of the system is several times that of a single-level structure in a limited model space, the system can highly simulate the working posture of large equipment such as a real ladder fire truck, and the simulation degree and visual impact of the model vehicle are greatly improved. The application is used for the RC model car's car rear bucket lifting system, installs the three-stage servo driver in the two-stage support, installs the four-stage servo driver on the three-stage support, so that the three-stage servo driver and the four-stage servo driver can be lifted along with the two-stage support and the three-stage support, without again extending from the total support to the three-stage support and the four-stage support, greatly shortening the transmission chain distance, and then the length of the lifting rod can be reduced, on the one hand, avoiding the waste of the lifting rod material, reducing the production cost, on the other hand, the friction, backlash and elastic deformation and other problems of the transmission link can be reduced, and then the transmission efficiency can be effectively improved; The application is used for the RC model car's car rear bucket lifting system, is provided with a turning guide groove, an L-shaped guide piece, a pull rope guide frame and a rope limiting guide groove, so that the traction rope can be orderly guided from the servo driver guide support mounting position, forming an anti-loose and anti-winding guide system, ensuring the reliability of the traction rope in complex multi-stage movement, avoiding winding and other problems of long-distance traction rope transmission; The application is used for the RC model car's car rear bucket lifting system, adopts rope transmission in the first-stage and second-stage mechanism to realize long-distance and high-efficiency power transmission, and adopts the lifting rod in the third-stage and fourth-stage mechanism to realize the precise and rigid control of the top, the application combines the two ways, fully utilizes the advantages of different transmission ways, optimizes the requirements of different levels, and shows the high system integration wisdom; The application is used for the RC model car's car rear bucket lifting control method, when the sequential extension strategy is adopted, the system disperses the peak current to different time points through time-sharing starting, successfully avoids the power system "surge" phenomenon caused by the simultaneous starting of multiple servo drivers, greatly reduces the control system failure rate caused by voltage drop, and greatly enhances the electrical reliability of the system; The application is used for the RC model car's car rear bucket lifting control method, when the wave-like extension strategy is adopted, each mechanism is started in turn with a small time difference, forming a continuous and smooth lifting motion visual effect like waves, greatly eliminating the "step feeling" and "jerking feeling" of traditional multi-stage lifting, and bringing an unprecedented smooth experience for the dynamic performance and shooting of the RC model. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall development schematic view of the application for the RC model car's car rear bucket lifting system; Figure 2 It is the overall folding schematic view of the application for the RC model car's car rear bucket lifting system; Figure 3 It is the total support schematic view of the application for the RC model car's car rear bucket lifting system; Figure 4Figure 1 is a diagram of a first lifting mechanism of a rear hopper lifting system for an RC model car according to the present application; Figure 5 Figure 2 is a diagram of a second lifting mechanism of a rear hopper lifting system for an RC model car according to the present application; Figure 6 Figure 3 is a diagram of a third lifting mechanism of a rear hopper lifting system for an RC model car according to the present application; Figure 7 Figure 4 is a diagram of a fourth lifting mechanism of a rear hopper lifting system for an RC model car according to the present application; Figure 1 is a diagram of a first lifting mechanism of a rear hopper lifting system for an RC model car according to the present application; DETAILED DESCRIPTION

[0021] In order to make the person in the technical field better understand the technical scheme of the present application, the product of the present application is further explained in detail below in combination with the embodiments and the drawings.

[0022] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can be an intervening element; when an element is referred to as being “connected” to another element, it can be directly connected to the other element or there can be an intervening element. The terms “vertical”, “horizontal”, “left”, “right” and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "and / or" includes a set of one or more associated listed items. Embodiment one

[0024] As shown in Figure 1 and Figure 2 A rear hopper lifting system for RC model car, comprising a total bracket 5, a first lifting mechanism 1, a second lifting mechanism 2, a third lifting mechanism 3 and a fourth lifting mechanism 4 are arranged on the total bracket 5, one end of the first lifting mechanism 1 is rotatably installed on one end of the total bracket 5, one end of the second lifting mechanism 2 is rotatably installed on the other side end of the first lifting mechanism 1, one end of the third lifting mechanism 3 is rotatably installed on the other side end of the second lifting mechanism 2, and the fourth lifting mechanism 4 is rotatably installed on the other side end of the third lifting mechanism 3.

[0025] It should be noted that: in the embodiment, the fourth lifting mechanism 4 is provided with a rear hopper, the present application adopts a multi-stage linkage lifting design, so that the lifting process is more stable, the single-point load is reduced, and the stability and service life of the system are improved; the rotation connection is adopted between the lifting mechanisms of the present application, so that the mechanism can be flexibly folded and unfolded during lifting, and a larger lifting range can be achieved in a limited space, and the flexibility of the overall system control is provided through the hierarchical control, which is more suitable for small size application of model car; the overall structure of the present application is compact, which is convenient to install on the RC model car and does not occupy too much space.

[0026] As shown in Figure 1 and Figure 3 The total bracket 5 comprises a bracket chassis 501, the bracket chassis 501 is symmetrically provided with a bracket rod 502 on both sides, a support cross beam 503 is arranged between one end of the two bracket rods 502, a first lifting switching groove 504 and a turning guide groove 505 are arranged on the outer side of the support cross beam 503; one end of the bracket rod 502 is provided with an L-shaped guide 506 on the outer side of the cross beam, a straight guide groove is arranged on the outer end of the L-shaped guide 506; a driving mounting position 507 is arranged on the chassis, a pull rope guide groove 508 is further arranged on the front side of the driving mounting position 507; a pull rope guide frame 509 is arranged on the outer side of the driving mounting position 507, the pull rope guide frame 509 is fixed on the bracket rod 502, and a pull rope guide groove is arranged on the upper end of the pull rope guide frame 509.

[0027] It is to be noted that in the embodiment, the first lifting adapter groove 504 is provided with two, which are symmetrically arranged at the two ends of the support beam 503 close to the support rod 502, and the two side walls of the first lifting adapter groove 504 are provided with a rotating shaft insertion hole. When the adapter buckle position of the first support 102 is clamped in the first lifting adapter groove 504, the rotating shaft is inserted into the rotating shaft insertion hole of the first lifting adapter groove 504 and the rotating shaft insertion hole of the first support 102, so that the first support 102 and the total support 5 are rotatably connected. The two first lifting adapter grooves 504 are provided with a turning guide groove 505, which is arranged in an arc shape, and the two sides are provided with an upper slot with an arc-shaped upper opening and a lower slot with an arc-shaped lower opening. The slot positions of the upper slot and the lower slot are in the same height space, which can form the upper and lower limit positions, avoid the displacement of the traction rope 6, and play a role in limiting the displacement of the traction rope 6. When the traction rope 6 is clamped and wound through the first upper slot, then clamped and wound through the lower slot, and then clamped and wound through the second upper buckle slot, the traction rope 6 can realize turning and reversing transmission. One end of the L-shaped guide 506 is fixed on the support rod 502, and the horizontal part thereof extends to the middle part of the two support rods 502. The outer end of the L-shaped guide 506 is provided with a straight guide slot. The L-shaped guide 506 is provided for directional guiding of the traction rope 6 of the first lifting mechanism 1. The support base plate 501 is provided with two parallel drive mounting positions 507. The front and rear sides of the drive mounting position 507 are provided with drive fixing holes. The first servo driver 101 is installed on the drive mounting position 507 on the same side of the L-shaped guide 506, and the second servo driver 201 is fixed on the other drive mounting position 507. In the embodiment, various guide slots and guide frames are provided for the path of the traction rope 6, so that the traction rope 6 can be orderly and smoothly transmitted, thereby reducing the friction and wear of the traction rope 6, protecting the traction rope 6, preventing the traction rope 6 from being separated or wound, and improving the reliability of the overall system. The arrangement of the drive mounting position 507 and the rope guide 509 can reasonably arrange the servo driver and the traction rope 6, so that the system is more convenient to install and maintain.

[0028] As Figure 1 and Figure 4As shown, the first lifting mechanism 1 comprises a first servo driver 101, a traction rope 6 and a first support 102, the first servo driver 101 is fixedly installed on the total support 5, and a rotating rod 7 is arranged on the output end of the first servo driver 101; one end of the traction rope 6 is rotatably installed on the outer end of the rotating rod 7, and the other end is rotatably installed on the first support 102; one end of the first support 102 is rotatably installed on the total support 5; one end of the first support 102 is provided with a first transfer buckle position 103 which is rotatably connected with the total support 5, and the other end is provided with a first transfer buckle slot 104 which is rotatably connected with the second support 202; and the bottom surface of the middle part of the first support 102 is provided with a limit rope guide groove.

[0029] It should be noted that: in the embodiment, the first servo driver 101 is fixedly installed on the drive installation position 507 of the support chassis 501, and the rotating rod 7 is arranged on the output end of the first servo driver 101, and the outer end of the rotating rod 7 is fixedly provided with a spherical transfer part; two first transfer buckle positions 103 which are designed to be downwardly curved are arranged on one side end of the first support 102, and a rotating shaft insertion hole is arranged on the first transfer buckle position 103, and the outer end of one of the first transfer buckle positions 103 is further provided with a transfer buckle slot which is connected with the traction rope 6, and the other end of the first support 102 which is opposite to the first transfer buckle position 103 is provided with two first transfer buckle slots 104 which are connected with the second support 202; the first transfer head 601 of the traction rope 6 is rotatably connected with the spherical transfer part at the end of the rotating rod 7, one limit buckle 603 of the traction rope 6 is clamped in the limit rope guide groove of the pull rope guide frame 509, then the traction rope 6 is clamped in the pull rope guide groove 508 on the front side of the drive installation position 507, then the traction rope 6 is clamped in the linear guide groove of the L-shaped guide part 506, and finally the second transfer head 602 of the traction rope 6 is rotatably connected with the transfer buckle slot of the first support 102 through the rotating shaft. When the first servo driver 101 is started and drives the rotating rod 7 to rotate, the traction rope 6 can be pulled, and then the end of the first support 102 which is connected with the total support 5 can be rotated around the rotating shaft, so that the end of the first support 102 which is connected with the second support 202 is lifted upward, and the ascending action of the first lifting mechanism 1 is realized. In the embodiment, the first servo driver 101 is a drive rudder, which can provide precise angle control, so that the first lifting mechanism 1 can be remotely controlled during the lifting process, and the response speed is fast; the traction rope 6 transmission can reduce the complexity of mechanical transmission, and can realize long-distance transmission, and reduce the weight and cost of the transmission part.

[0030] As Figure 1 and Figure 5As shown, the secondary lifting mechanism 2 comprises a secondary servo driver 201, a traction rope 6 and a secondary support 202. The secondary servo driver 201 is fixedly installed on the general support 5, and a rotating rod 7 is arranged on the output end of the secondary servo driver 201. One end of the traction rope 6 is rotatably installed on the outer end of the rotating rod 7, and the other end is rotatably installed on the secondary support 202. The secondary support 202 is arranged in a vertically stacked manner with the primary support 102. One end side of the secondary support 202 is rotatably installed on the primary support 102, and the other end side of the secondary support 202 is rotatably connected with the tertiary lifting mechanism 3.

[0031] It is to be noted that: in the embodiment, the secondary servo driver 201 adopts a steering engine, is installed on the other driving mounting position 507 of the support chassis 501 of the total support 5, and is provided with a rotating rod 7 on the output end. The outer end of the rotating rod 7 is fixedly provided with a spherical adapter. The secondary support 202 is stacked on the upper side of the primary support 102. One side end of the secondary support 202 is provided with a secondary adapter buckle position 203 which is rotationally connected with the primary support 102. The secondary adapter buckle position 203 is provided with a rotating shaft insertion hole. During installation, the secondary adapter buckle position 203 is clamped in the primary adapter slot 104 of the primary support 102, and the rotating shaft is inserted into the rotating shaft hole on both sides of the primary adapter slot 104 and the rotating shaft insertion hole of the secondary adapter buckle position 203, so that the secondary support 202 is rotationally connected with the primary support 102 through the rotating shaft. The outer end of the other secondary adapter buckle position 203 of the secondary support 202 is also provided with an adapter slot which is connected with the traction rope 6. The adapter slot is downwardly and outwardly provided. One side end of the side of the secondary support 202 opposite to the side provided with the secondary adapter buckle position 203 is provided with a secondary adapter slot 204 position which is rotationally connected with the tertiary support 303. The two side walls of the secondary adapter slot 204 position are provided with rotating shaft insertion holes. The middle part of the secondary support 202 is provided with a transmission avoiding hole and a driving mounting hole. The driving mounting hole is provided with driving fixing holes on both sides. The tertiary driving servo is fixedly installed in the driving mounting hole. The first adapter head 601 of the traction rope 6 is rotationally connected with the spherical adapter of the rotating rod 7. One limiting buckle 603 of the traction rope 6 is clamped in the rope guide groove of the rope guide support 509. Then the traction rope 6 is clamped in the turning guide groove 505 in sequence after being clamped in the rope guide groove 508 in front of the driving mounting position 507. Then the second adapter head 602 of the traction rope 6 is rotationally connected with the adapter slot of the secondary support 202 through the rotating shaft, so as to realize the layout and installation of the traction rope 6. When the secondary servo driver 201 is started and drives the rotating rod 7 to rotate, the traction rope 6 can be pulled, and the other end of the secondary support 202 can be lifted upwards through the rotation of the one end of the secondary support 202 and the primary support 102 around the rotating shaft, so as to realize the lifting action of the secondary lifting mechanism 2.In the embodiment, the secondary lifting mechanism 2 is independently controlled with the primary lifting mechanism 1, and the secondary support 202 is stacked above the primary support 102. This design not only saves installation space, but also makes the whole system more compact, and enables the secondary support 202 to continue lifting on the basis of the primary support 102, thereby expanding the lifting range. The secondary servo driver 201 is independently arranged, which can realize hierarchical control, reduce the load of a single servo driver, and improve the efficiency of the whole system. The secondary support 202 and the primary support 102 are rotationally connected, which can ensure smooth movement and avoid the occurrence of jamming.

[0032] As shown in Figure 1 and Figure 4 The two ends of the traction rope 6 are respectively provided with a first adapter 601 and a second adapter 602. The traction rope 6 is rotationally connected with the connecting rod through the first adapter 601, and rotationally connected with the primary support 102 or the secondary support 202 through the second adapter 602. A plurality of limiting buckles 603 are arranged on the traction rope 6, and the traction rope 6 is clamped in the rope limiting guide groove through the limiting buckles 603.

[0033] It is to be noted that in the embodiment, the traction rope 6 comprises a hard rigid rope, one end of the rigid rope is fixedly connected with the first adapter 601, the other end is fixed on the second adapter 602, the rigid rope is movably sleeved with a guide sheath outside, the two ends of the guide sheath are provided with limiting buckles 603, the rigid rope can be stretched and moved in the guide sheath, the first adapter 601 is provided with an adapter limiting hole, the second adapter 602 is provided with a shaft insertion hole, when installed, the first adapter 601 of the traction rope 6 of the first lifting mechanism 1 is rotatably connected with the rotating rod 7 of the first servo driver, the limiting buckles 603 of the guide sheaths on the traction rope 6 close to the first adapter 601 are clamped and limited in the rope limiting groove of the rope guide frame 509, the guide sheaths are clamped in the rope guide groove on the front side of the driver installation position, then continue to extend and clamp in the straight guide groove of the L-shaped guide 506, and the limiting buckles 603 of the traction rope 6 close to the second adapter 602 are clamped and limited in the straight guide groove, the second adapter 602 of the traction rope 6 is rotatably connected with the first support 102 through the shaft; the first adapter 601 of the traction rope 6 of the second lifting is rotatably connected with the rotating rod 7 of the second servo driver, the limiting buckles 603 of the guide sheaths on the traction rope 6 close to the first adapter 601 are clamped and limited in the rope limiting groove of the rope guide frame 509, the guide sheaths are clamped in the rope guide groove on the front side of the driver installation position, then continue to extend and clamp in the turning guide groove 505, complete the turning of the traction rope 6, then extend so that the other limiting buckle of the traction rope 6 is clamped and limited in the rope limiting groove on the bottom surface of the first support 102, and then the second adapter 602 is rotatably connected with the second support 202 through the shaft. In the embodiment, the first adapter 601 and the second adapter 602 of the traction rope 6 are arranged so that the traction rope 6 can freely rotate between the connection points, reducing stress concentration and wear, and prolonging the service life of the traction rope 6; the cooperation of the limiting buckles 603 and the guide grooves fixes the position of the traction rope 6, so that the traction rope 6 always moves in the guide groove, which can avoid entanglement and knotting between multiple traction ropes 6, and can prevent loosening and reduce the incidence of accidental failure.

[0034] As Figure 1 and Figure 6As shown, the third lifting mechanism 3 comprises a third servo driver 301, a third lifting rod 302 and a third support 303, the third servo driver 301 is fixedly installed on the second support 202, and the output end of the third servo driver 301 is provided with a rotating swing arm 8, one end of the third lifting rod 302 is rotatably connected with the rotating swing arm 8, and the other end is rotatably connected with the fourth lifting mechanism 4; the third support 303 is arranged on the other outer side of the second support 202 away from the first support 102, and is arranged in a laminated manner with the second support 202, one end side of the third support 303 is rotatably connected with the second lifting mechanism 2, and the other end side is rotatably connected with the fourth lifting mechanism 4.

[0035] It should be noted that: in the embodiment, the third servo driver 301 adopts a rudder, the third servo driver 301 is fixed on a driving mounting frame, the driving mounting frame is fixed in a driving mounting hole on the second support 202, the output end of the third servo is provided with a rotating swing arm 8, the lower end of the rotating swing arm 8 is rotatably connected with the third lifting rod 302, one end of the third lifting rod 302 is provided with an adapter slot, and the other end is provided with an adapter buckle position, the adapter slot and the adapter buckle position are both provided with a rotating shaft hole, the outer end of the rotating swing arm 8 is clamped in the adapter slot of the third lifting rod 302, and is rotatably connected through a rotating shaft; the third support 303 is arranged on the upper surface of the second support 202 in a laminated manner, the third support 303 is provided with two driver avoiding holes, one of the driver avoiding holes is provided with a driver fixing hole on both sides, which is used for fixing the fourth servo driver 401; one side end of the third support 303 is provided with a third adapter buckle position 304 which is rotatably connected with the second support 202, the middle part of the third adapter buckle position 304 is provided with an adapter slot which is rotatably connected with the third lifting rod 302, the adapter buckle position of the third lifting rod 302 is clamped in the adapter slot, and is rotatably connected through a rotating shaft, so that the third support 303 can be lifted through the third lifting rod 302; the third adapter buckle position 304 is provided with a rotating shaft hole, during installation, the third adapter buckle position 304 is clamped in the second adapter slot 204, and then the second support 202 and the third support 303 are rotatably connected through a rotating shaft; the other side end of the third support 303 which is provided with the third adapter buckle position 304 is provided with a third adapter slot 305 which is rotatably connected with the fourth support 403, and the third adapter slot 305 is provided with a rotating shaft hole on both side walls. In the present application, the third lifting mechanism 3 adopts a lifting rod instead of a traction rope 6, the lifting rod provides a linear push-pull motion, which can be complementary to the retraction form of the traction rope 6, the transmission of the lifting rod is more direct, which can greatly improve the lifting efficiency, and the third servo driver 301 is installed on the second support 202, so that the system structure is more compact and reasonable, and the motion inertia is reduced.

[0036] As Figure 1 and Figure 7 shown, the fourth stage lifting mechanism 4 includes a fourth stage servo driver 401, a fourth stage lifting rod 402 and a fourth stage bracket 403, the fourth stage servo driver 401 is fixedly installed on the third stage bracket 303, and the output end is provided with a rotating swing arm 8, one end of the fourth stage lifting rod 402 is rotatably connected with the rotating swing arm 8, the other end is rotatably connected with one end side of the fourth stage bracket 403, the fourth stage bracket 403 is stacked on the other side of the third stage bracket 303 away from the second stage bracket 202, and one end side of the fourth stage bracket 403 is rotatably connected with one end side of the third stage bracket 303.

[0037] It should be noted that: in the embodiment, the fourth stage servo driver 401 adopts a rudder, the fourth stage servo driver 401 is fixed on a driving mounting bracket, the driving mounting bracket is fixed in a driver avoiding hole provided with a fixed hole on the third stage bracket 303, the output end of the fourth stage servo driver is provided with a rotating swing arm 8, the lower end of the rotating swing arm 8 is rotatably connected with the fourth stage lifting rod 402, one end of the fourth stage lifting rod 402 is provided with an adapter clamping groove, and the other end is provided with an adapter clamping buckle, the adapter clamping groove and the adapter clamping buckle are both provided with a rotating shaft hole, the outer end of the rotating swing arm 8 is clamped in the adapter clamping groove of the fourth stage lifting rod 402, and is rotatably connected through a rotating shaft; the fourth stage bracket 403 is stacked on the third stage bracket 303, the fourth stage bracket 403 is provided with two driver avoiding holes; one side end of the fourth stage bracket 403 is provided with a fourth stage adapter clamping buckle 404 rotatably connected with the third stage bracket 303, the fourth stage adapter clamping buckle 404 is provided with an adapter clamping groove rotatably connected with the fourth stage lifting rod 402 in the middle, the adapter clamping buckle of the fourth stage lifting rod 402 is clamped in the adapter clamping groove of the fourth stage bracket 403, and is rotatably connected through a rotating shaft, so that the fourth stage bracket 403 can be lifted through the fourth stage lifting rod 402; the fourth stage adapter clamping buckle 404 is provided with a rotating shaft hole, when installed, the fourth stage adapter clamping buckle 404 is clamped in the third stage adapter clamping groove 305 of the third stage bracket 303, and is rotatably connected between the third stage bracket 303 and the fourth stage bracket 403 through a rotating shaft; the fourth stage bracket 403 is also provided with a vehicle hopper connecting hole 405 fixedly connected with a vehicle hopper on the four corners. In the application, the fourth stage lifting mechanism 4 is the final stage of the lifting chain of the application, directly connected with the vehicle hopper, so that the lifting rod completes the last stage of lifting, and the vehicle hopper reaches the required height; the fourth stage servo driver 401 is installed on the third stage bracket 303, realizing distributed layout of the power source, reducing the load of a single component, improving the reliability of the whole system, and maintaining stability of the fourth stage bracket 403 in the lifting process through rotating connection, avoiding tilting. Example two

[0038] AsFigures 1 to 7 As shown in any one of the above, a rear hopper lifting control method for RC model car, comprising the rear hopper lifting system for RC model car, further comprising the following steps: S1, control signal input: send control signal to the receiving end through the remote controller, and transmit the signal to the corresponding servo driver control circuit after the receiving end analyzes the signal; S2, servo driver work: after the servo driver receives the control signal, the internal motor rotates according to the signal instruction, when the rear hopper needs to rise, the control circuit sends the signal of servo driver forward rotation; When the rear hopper needs to descend, the control circuit sends the signal of servo driver reverse rotation; S3, pull the support movement: when the servo driver receives the forward rotation signal sent by the control circuit, the first level servo driver 101 and the second level servo driver 201 work synchronously first, lift the first level support 102 and the second level support 202 to the set height, form a stable intermediate support platform; When the second level support 202 is stable, the third level servo driver 301 starts to work, lifts the third level support 303 to the set height; After the third level support 303 is stable, the fourth level servo driver 401 starts to work, lifts the fourth level support 403 to the set height, and completes the lifting of the rear hopper; S4, rear hopper lifting: the lifting movement of the support is transmitted to the rear hopper through mechanical connection, realizing the rising or descending of the rear hopper; When the rear hopper needs to descend, the control circuit sends the signal to control the servo driver to reverse, that is, the support can be pulled down through the traction rope 6 or the lifting rod, and then the rear hopper is lowered. Example three

[0039] As Figures 1 to 7 shown, a rear hopper lifting control method for RC model car, comprising the rear hopper lifting system for RC model car, further comprising the following steps: S1, control signal input: send control signal to the receiving end through the remote controller, and transmit the signal to the corresponding servo driver control circuit after the receiving end analyzes the signal; S2, servo driver work: after the servo driver receives the control signal, the internal motor rotates according to the signal instruction, when the rear hopper needs to rise, the control circuit sends the signal of servo driver forward rotation; When the rear hopper needs to descend, the control circuit sends the signal of servo driver reverse rotation; S3, pull the support movement: when the servo driver receives the positive rotation signal sent by the control circuit, the first servo driver 101, the second servo driver 201, the third servo driver 301 and the fourth servo driver 401 are started in turn according to the time difference of 30-60 ms, so that the first support 102, the second support 202, the third support 303 and the fourth support 403 form a continuous rising movement; S4, rear bucket lifting: the lifting movement of the support is transmitted to the rear bucket through mechanical connection to realize the lifting or lowering of the rear bucket; when the rear bucket needs to be lowered, the control circuit sends a signal to control the servo driver to reverse, that is, the support is pulled down through the traction rope 6 or the lifting rod, thereby driving the rear bucket to descend.

[0040] The above is only a preferred embodiment of the present application, and does not limit the present application in any form; those skilled in the art can easily implement the present application according to the drawings and the above description; however, those skilled in the art can make some changes, modifications and equivalent changes within the scope of the technical solutions of the present application, which are equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present application are still within the scope of the present application.

Claims

1. A hood lifting system for an RC model vehicle, characterized by: The total support (5) includes a support chassis (501), the both sides of the support chassis (501) are symmetrically provided with support rods (502), one end of the two support rods (502) is provided with a support crossbeam (503), the outer side of the support crossbeam (503) is provided with a first lifting transfer slot (504) and a turning guide slot (505); one end of the support rod (502) is provided with an L-shaped guide (506) on the outer side of the crossbeam, the outer end of the L-shaped guide (506) is provided with a straight guide slot.

2. The roll cage lifting system for an RC model vehicle of claim 1, wherein: The chassis is provided with a drive mounting position (507), the front side of the drive mounting position (507) is further provided with a pull rope guide slot (508) The outer side of the drive mounting position (507) is provided with a pull rope guide frame (509), the pull rope guide frame (509) is fixed on the support rod (502), and the upper end of the pull rope guide frame (509) is provided with a pull rope guide slot. The first lifting mechanism (1) includes a first servo driver (101), a traction rope (6) and a first support (102), the first servo driver (101) is fixedly installed on the total support (5), and the output end is provided with a rotating rod (7); one end of the traction rope (6) is rotatably installed on the outer end of the rotating rod (7), and the other end is rotatably installed on the first support (102), and one end of the first support (102) is rotatably installed on the total support (5); The first support (102) is provided with a first transfer buckle position (103) rotatably connected with the total support (5) at one end, and the other end is provided with a first transfer buckle slot (104) rotatably connected with the second support (202), and the middle bottom of the first support (102) is provided with a pull rope guide slot.

3. The roll cage lifting system for an RC model vehicle of claim 1, wherein: The second lifting mechanism (2) includes a second servo driver (201), a traction rope (6) and a second support (202), the second servo driver (201) is fixedly installed on the total support (5), and the output end is provided with a rotating rod (7), one end of the traction rope (6) is rotatably installed on the outer end of the rotating rod (7), and the other end is rotatably installed on the second support (202), the second support (202) and the first support (102) are arranged in an upper and lower stack, one end of the second support (202) is rotatably installed on the first support (102), and the other end of the second support (202) is rotatably connected with the third lifting mechanism (3). ​ 4. The rock bucket lifting system for RC model vehicles of claim 3, wherein: ​ 5. The rock bucket lifting system for an RC model vehicle according to claim 3 or 4, characterized in that: Both ends of the traction rope (6) are respectively provided with a first adapter (601) and a second adapter (602), the traction rope (6) is rotatably connected with the connecting rod through the first adapter (601) and rotatably connected with the first-level support (102) or the second-level support (202) through the second adapter (602); a plurality of limiting buckles (603) are further arranged on the traction rope (6), and the traction rope (6) is clamped in the rope limiting guide groove through the limiting buckles (603).

6. The rock bucket lifting system for RC model vehicles of claim 4, wherein: The third-level lifting mechanism (3) comprises a third-level servo driver (301), a third-level lifting rod (302) and a third-level support (303), the third-level servo driver (301) is fixedly installed on the second-level support (202), and an output end of the third-level servo driver (301) is provided with a rotating rocker arm (8); one end of the third-level lifting rod (302) is rotatably connected with the rotating rocker arm (8), and the other end of the third-level lifting rod (302) is rotatably connected with the fourth-level lifting mechanism (4); the third-level support (303) is arranged on the other outer side of the second-level support (202) away from the first-level support (102) and is arranged in a laminated mode with the second-level support (202); one end side of the third-level support (303) is rotatably connected with the second-level lifting mechanism (2), and the other end side of the third-level support (303) is rotatably connected with the fourth-level lifting mechanism (4).

7. The roll cage lifting system for an RC model vehicle of claim 6, wherein: The fourth-level lifting mechanism (4) comprises a fourth-level servo driver (401), a fourth-level lifting rod (402) and a fourth-level support (403), the fourth-level servo driver (401) is fixedly installed on the third-level support (303), and an output end of the fourth-level servo driver (401) is provided with a rotating rocker arm (8); one end of the fourth-level lifting rod (402) is rotatably connected with the rotating rocker arm (8), and the other end of the fourth-level lifting rod (402) is rotatably connected with one end side of the fourth-level support (403); the fourth-level support (403) is arranged on the other side of the third-level support (303) away from the second-level support (202) in a laminated mode; and one end side of the fourth-level support (403) is rotatably connected with one end side of the third-level support (303).

8. A method for controlling the lift of a car's hood for RC model cars, characterized by: The rear hopper lifting system for the RC model vehicle comprises the following steps: S1, control signal input: sending a control signal to a receiving end through a remote controller, and transmitting the signal to a corresponding servo driver control circuit after the receiving end analyzes the signal; S2, servo driver working: after the servo driver receives the control signal, a motor in the servo driver rotates by a corresponding angle according to the signal instruction; when the rear hopper needs to be lifted, the control circuit sends a signal for the servo driver to rotate forward; when the rear hopper needs to be lowered, the control circuit sends a signal for the servo driver to rotate reversely; S3, pulling the support to move: when the servo driver rotates, the support is lifted or lowered through the traction rope (6) or the lifting rod; if the traction rope (6) is used to lift or lower the support, the rotating rod (7) on the servo driver rotates to wind or unwind the traction rope (6), thereby driving the support to be lifted or lowered; if the lifting rod is used, the servo driver drives the lifting rod through the rotating rocker arm (8), thereby enabling the support to move in a straight line. S4, the rear bucket lifting: the lifting movement of the support is transmitted to the rear bucket through mechanical connection, realizing the rising or falling of the rear bucket; when the rear bucket needs to be lowered, the control circuit sends a signal to control the servo driver to reverse, that is, the support can be pulled down through the traction rope (6) or the lifting rod, thereby driving the rear bucket to fall.

9. The method of control of the lift of the bed of a RC model vehicle according to claim 8, characterized in that: In step S3, when the servo driver receives the positive rotation signal sent by the control circuit, the first-level servo driver (101) and the second-level servo driver (201) first work synchronously to lift the first-level support (102) and the second-level support (202) to a set height, forming a stable intermediate support platform; after the second-level support (202) is stable, the third-level servo driver (301) starts to work to lift the third-level support (303) to a set height; after the third-level support (303) is stable, the fourth-level servo driver (401) starts to work to lift the fourth-level support (403) to a set height, completing the lifting of the rear bucket.

10. The method of control of the lift of the bed of a RC model vehicle according to claim 8, characterized in that: In step S3, when the servo driver receives the positive rotation signal sent by the control circuit, the first-level servo driver (101), the second-level servo driver (201), the third-level servo driver (301), and the fourth-level servo driver (401) are started in turn according to equal time differences of 30-60 ms, so that the first-level support (102), the second-level support (202), the third-level support (303), and the fourth-level support (403) form a continuous lifting movement.

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