Trolley chassis with boom type steering structure

Abstract

The utility model relates to the technical field of lifting equipment, in particular to a trolley chassis with a boom type steering structure. A trolley chassis with a boom type steering structure comprises steering wheels used for controlling and driving a trolley to move and steer, power wheels used for controlling and driving the trolley to move and brake, a frame used for installing the steering wheels, the power wheels and a control system assembly of the power wheels, and the steering wheels are controlled to swing through a swing oil cylinder and achieve steering control. The two ends of the swing oil cylinder are connected with the steering wheels on the two sides of the vehicle frame in a control mode and are synchronously controlled in a telescopic mode. The two ends of the two-way oil cylinder are connected with the steering wheels on the two sides of the frame respectively, synchronous stretching and retracting and same-angle steering of the steering wheels on the two sides are achieved through driving of the hydraulic system, the problem that steering is not synchronous due to mechanical gaps, response lag and the like in a traditional multi-motor or multi-steering-engine system is effectively solved, the advancing track of the trolley is more accurate, and the stability is higher. And the stability and the safety during steering are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lifting equipment, especially a trolley chassis with arm truck type steering structure. BACKGROUND

[0002] The lifting arm truck is a special vehicle integrating movement, lifting and positioning functions, which is mainly characterized by loading a telescopic or rotatable mechanical arm, and can realize operation requirements of different heights and spatial positions.

[0003] The traditional steering structure often relies on the cooperative work of multiple drive motors or steering gears. SUMMARY

[0004] To solve the problem of inconsistent interference in the steering of existing warehouse transport trolleys and simplify the steering structure, the utility model provides a trolley chassis with arm truck type steering structure.

[0005] The trolley chassis with arm truck type steering structure provided by the utility model adopts the following technical scheme:

[0006] A trolley chassis with arm truck type steering structure comprises:

[0007] The steering wheel is installed by rolling horizontally and swinging vertically, and is used for controlling the movement and steering of the trolley;

[0008] The power wheel is installed by rolling horizontally, and is used for controlling and driving the movement and braking of the trolley;

[0009] The frame is used for installing the steering wheel, the power wheel and the control system components thereof;

[0010] The turning wheel is drivingly connected with the swing oil cylinder, and the swing is controlled by the swing oil cylinder to realize the turning control of the turning wheel. The swing oil cylinder is a bidirectional oil cylinder, and two ends thereof are respectively connected with the turning wheels on both sides of the vehicle frame and synchronously controlled to extend and retract.

[0011] The bidirectional swing oil cylinder is used to control the synchronous swing of the turning wheels on both sides. Two ends of the bidirectional oil cylinder are respectively connected with the turning wheels on both sides of the vehicle frame, and are driven by a hydraulic system to realize the synchronous extension and retraction and the same-angle turning of the turning wheels on both sides. The problem of different turning of the turning wheels on both sides caused by mechanical clearance and response lag in the traditional multi-motor or multi-steering system is effectively avoided. The track of the vehicle is more accurate, and the stability and safety of the vehicle during turning are significantly improved. The swing oil cylinder is used as a turning execution element, has the advantages of fast response speed and strong controllability, and directly drives the turning wheel by the hydraulic system to realize fast response of the turning instruction, adapt to high-frequency turning and rapid turning requirements in complex environments, and significantly improve the control sensitivity and real-time performance of the vehicle.

[0012] Further, the turning wheel is rollingly installed on the swing wheel frame and is swingingly installed at two ends of the turning assembly by the swing wheel frame. The swing wheel frame is connected with the swing oil cylinder through a swing link. Two ends of the swing link are respectively hingedly connected with one side of the swing wheel frame and the extension and retraction end of the swing oil cylinder.

[0013] The turning wheel is rollingly installed on the swing wheel frame and is directly swingingly installed at two ends of the turning assembly by the swing wheel frame, so that the transmission path of the turning power is effectively shortened. The extension and retraction action of the swing oil cylinder is directly and reliably transmitted to the swing wheel frame by the swing link, so that the structure is highly integrated and compact, and the overall transmission efficiency is improved. The swing oil cylinder drives the swing wheel frame through the swing link, so as to drive the turning wheel to adjust the angle. The two ends of the swing link are respectively hingedly connected with the swing wheel frame and the extension and retraction end of the oil cylinder, so that the force is uniformly borne and the action is smooth during power transmission. The structure can accurately control the turning angle of the turning wheel, has high turning sensitivity, meets the flexible and mobile requirements of the vehicle in complex working conditions, and has mechanical hingedly connected points, simple structure, easy disassembly and assembly, and is beneficial to later maintenance, repair and replacement of parts.

[0014] Further, the turning assembly comprises upper support plates and lower support plates. The upper support plates and the lower support plates are arranged in parallel at a distance from each other. The upper support plates and the lower support plates are connected and fixed by hinged swing plates. The hinged swing plates are arranged at two ends of the upper support plates and the lower support plates, and one hinged swing plate is arranged on each side of each end. The end portions of the hinged swing plates are hingedly connected with the swing wheel frames. The front sides of the upper support plates and the lower support plates are blocked and installed by front blocking plates.

[0015] The upper support plate and the lower support plate are arranged in parallel with a spacing, and are connected and fixed through a plurality of hinged swing plates, forming a frame type steering assembly structure, which can effectively disperse and bear various loads from the swing wheel frame and the steering wheel, significantly improving the structural rigidity and stability of the entire steering system, ensuring the reliability of the trolley during loading and steering, the hinged swing plates are symmetrically distributed at both ends of the upper and lower support plates, and each end has a swing plate on both sides, which is hinged with the swing wheel frame, which can ensure that the swing wheel frame is evenly stressed during steering, the movement trajectory is controlled, and the swing action is more stable and accurate, effectively avoiding shaking and yawing caused by uneven stress on one side.

[0016] Further, the swing wheel frame is provided with an axle mounting hole, the steering wheel is rollingly mounted in the axle mounting hole, the swing wheel frame is provided with a combined side plate at the upper and lower swing ends, respectively, and the swing wheel frame is provided with a bearing seat at the left and right hinged ends, respectively, and the bearing seat is provided with a bearing, and the swing wheel frame is hinged with the steering assembly through the bearing seat and the bearing.

[0017] The swing wheel frame is hinged with the steering assembly through the bearing seat and the bearing, which greatly reduces the friction resistance during rotation, so that the swing wheel frame can move stably and sensitively during steering or obstacle avoidance, improves the response speed and efficiency of the steering system, and the combined side plate is arranged at the upper and lower swing ends of the swing wheel frame, which effectively enhances the rigidity and strength of the wheel frame body and improves the carrying capacity.

[0018] Further, the swing oil cylinder is fixedly installed on the steering assembly through a fixing block, a telescopic rod is bidirectionally telescoped in the swing oil cylinder, the telescopic rod extends out of the swing oil cylinder at both ends and is connected with the steering wheels on both sides, respectively, sealing heads are arranged at both ends of the swing oil cylinder, respectively, the sealing heads are in sliding and tightly sealing connection with the telescopic rod, and a piston in the middle of the telescopic rod divides the inside of the swing oil cylinder into two sealed spaces, and the two sealed spaces are respectively provided with oil holes and are connected with an external oil supply control system through the oil holes.

[0019] The swing oil cylinder is firmly installed on the steering assembly through the fixing block, ensuring the rigidity and stability of the oil cylinder during work, the telescopic rod in the oil cylinder is bidirectionally telescoped and connected with the steering wheels on both sides, respectively, and under the push of hydraulic oil, the steering wheels can be simultaneously or respectively driven to swing at a set angle, realizing efficient and accurate control of the direction of the vehicle, the piston in the middle of the telescopic rod divides the inside of the oil cylinder into two completely independent sealed cavities, each cavity is provided with an oil hole and is connected with an external oil supply control system, the oil supply system can control the flow of hydraulic oil in the two cavities individually or simultaneously, realizing sensitive adjustment and synchronous bidirectional driving of the steering wheels, and improving the control flexibility.

[0020] Further, the swing link is an arc-shaped link, and the swing link is hinged to one side of the swing wheel frame through a connecting seat fixedly arranged on the swing wheel frame.

[0021] The arc-shaped design enables the swing link to better adapt to the rotation track of the wheel frame during movement, optimizes the force transmission path, reduces the load deviation and movement resistance, ensures smoother movement during steering or obstacle avoidance, and enables the arc-shaped link to cooperate with the hinge structure to increase the swing angle range of the wheel frame and make the movement more flexible, thereby adapting to various complex road conditions and steering requirements and enhancing the passability and maneuverability of the vehicle.

[0022] Further, the power wheels are rollingly arranged on both sides of the transmission box, the transmission box is provided with a motor box on one side, the transmission box is internally provided with a transmission assembly, the power wheels on both sides of the transmission box are synchronously connected to each other through the transmission assembly in the transmission box, the motor box is internally provided with a motor, and the power wheels are power-connected to the motor in the motor box through the transmission assembly in the transmission box.

[0023] The transmission assembly in the transmission box uniformly and efficiently distributes the power of the motor to the power wheels on both sides to synchronously drive the power wheels on both sides, and this synchronous connection mode can avoid slippage or steering deviation caused by uneven power distribution, thereby improving the stability and safety of the vehicle during straight-line driving, and the integrated design of the motor box and the transmission box organically combines the motor, the transmission assembly and the power wheels, so that the overall structure is compact and occupies a small space, which is beneficial to the layout optimization of the vehicle chassis.

[0024] Further, the motor box is connected to the control box through control wires, one side of the control box extends and is provided with a connection terminal, and the control system assembly in the control box is connected to the motor box and the swing oil cylinder through the connection terminal.

[0025] The control box centrally arranges the control system assembly and uniformly manages the signals and power of the motor box and the swing oil cylinder through the connection terminal, thereby realizing efficient collaborative control of the key execution components and improving the response speed and automation degree of the overall system.

[0026] Further, the motor box and the control box are respectively connected to the battery box through power supply wires, the battery box is arranged close to both sides of the vehicle frame, one end of the battery box is hinged to the vehicle frame through a hinge mounting plate, and the other end of the battery box is fixed to the vehicle frame through a mounting buckle control locking.

[0027] The battery box is arranged close to both sides of the vehicle frame, fully utilizes the space on the side of the vehicle, effectively reduces the gravity center of the whole machine, is beneficial to the balance and stability of the vehicle during driving, and optimizes the internal space layout of the vehicle body to reserve more space for other components.

[0028] Further, the vehicle frame comprises two mutually parallel connecting side plates, each of which has a mounting gap at two ends for mounting a steering wheel and a power wheel and their connecting members, and a rotary seat plate on the upper surface and a bottom guard plate on the lower surface.

[0029] The rotary seat plate on the upper surface provides a standardized mounting interface for the upper layer rotation or support mechanism, facilitating the subsequent expansion of functional modules such as robotic arms and sensors, and the bottom guard plate on the lower surface effectively protects the bottom components from external impact, sand or water erosion, prolonging the service life of the entire machine.

[0030] In summary, the utility model has the following beneficial technical effects:

[0031] 1. The bidirectional swing oil cylinder hydraulic system realizes synchronous control of the two steering wheels, effectively eliminates the out-of-sync problem caused by the traditional mechanical gap, and improves the steering accuracy and operation safety of the trolley.

[0032] 2. The swing oil cylinder as a steering execution element has the characteristics of fast reaction speed and strong controllability, can quickly respond to steering instructions in complex environments, and improves the control sensitivity and real-time performance of the trolley.

[0033] 3. The steering wheel, swing wheel frame and assembly are highly integrated, shortening the power transmission path, improving the mechanical transmission efficiency, and the overall structure is compact and occupies small space.

[0034] 4. All key connection points use mechanical hinges, which are simple in structure, easy to disassemble, maintain and replace parts in later period, and reduce maintenance difficulty and cost.

[0035] 5. The upper and lower support plates are connected by multiple hinged swing plates to form a stable frame structure that can effectively disperse and withstand loads, improving the rigidity and overall stability of the steering system.

[0036] 6. The swing wheel frame is hinged with bearings through a bearing seat, which greatly reduces the friction resistance in the rotation process, making the steering and obstacle avoidance actions more stable and sensitive.

[0037] 7. The internal components of the transmission box can evenly distribute the motor power to the two power wheels, avoiding slipping or deflection due to uneven power, and ensuring the stability of the vehicle straight running.

[0038] 8. The motor box and transmission box are designed in an integrated manner to improve space utilization. The battery box is installed close to the two sides of the vehicle frame, effectively reducing the center of gravity of the whole vehicle and enhancing the balance.

[0039] 9. The rotary seat plate is arranged on the upper surface of the vehicle body, facilitating the installation of robotic arms and various sensors, and the bottom guard plate on the lower surface can effectively protect the bottom components from impact and environmental erosion.

[0040] 10. Control box centralized management of all execution and control system, through the unified terminal interface, realize motor and oil cylinder high efficient collaborative work, improve the overall automation and response speed. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is the utility model trolley chassis structure view from below;

[0042] Figure 2 It is the utility model steering wheel and steering control structure schematic view.

[0043] BRIEF DESCRIPTION OF DRAWINGS:

[0044] 1, steering wheel, 10, steering assembly, 101, upper support plate, 102, lower support plate, 103, articulated swing plate, 104, front blanking plate, 11, swing wheel frame, 111, axle mounting hole, 112, combined side plate, 113, bearing seat, 114, bearing, 12, swing cylinder, 121, fixed block, 122, telescopic rod, 123, sealing head, 124, oil hole, 13, swing connecting rod, 131, connecting seat, 2, power wheel, 21, transmission box, 211, motor box, 22, control box, 221, connecting terminal, 23, battery box, 231, articulated mounting plate, 232, mounting buckle, 3, frame, 31, connecting side plate, 311, mounting gap, 32, rotary seat plate, 33, bottom guard plate. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings Figures 1-2 The utility model is further explained in detail. Example 1

[0046] The utility model embodiment discloses a trolley chassis with arm car type steering structure, refer to Figure 1 , comprising:

[0047] Steering wheel 1, horizontal shaft rolling combination vertical shaft swing installation, for controlling trolley movement steering;

[0048] Power wheel 2, horizontal shaft rolling installation, for controlling and driving trolley movement and brake;

[0049] Frame 3, for installing steering wheel 1 and power wheel 2 and its control system components;

[0050] The steering wheel 1 drive connection swing cylinder 12, and through swing cylinder 12 control swing and realize the steering control of steering wheel 1, the swing cylinder 12 is bidirectional cylinder and both ends control connection frame 3 both sides steering wheel 1 and synchronous telescopic control.

[0051] The power wheel 2 and the steering wheel 1 are respectively installed at the designated positions of the vehicle frame 3, and the related support structures are fixedly connected. The swing oil cylinder 12 is installed on the vehicle frame 3 through a hinged structure, and the two ends thereof are respectively connected with the steering wheels 1 on both sides of the vehicle frame 3, so that the extension and retraction of the swing oil cylinder 12 can drive the two steering wheels 1 on both sides to swing synchronously. The power transmission system is installed, the power motor output shaft is reliably connected with the power wheel 2, the power transmission is ensured, the oil circuit system is laid out, the swing oil cylinder 12 is connected to the hydraulic power source, and the related oil pipes are reasonably arranged to avoid interference and leakage. The electric control system is installed, the controller is installed at the designated position of the vehicle frame 3, and the signal and power cables of the power wheel 2, the steering wheel 1 and the swing oil cylinder 12 are connected. After the installation of all components is completed, the system is debugged, the synchronism of the steering wheel 1 and the power output of the power wheel 2 are detected, and it is ensured that all components work coordinately and consistently.

[0052] The power is turned on, the electric control system and the hydraulic power source are started, the steering instruction is issued through the controller, the swing oil cylinder 12 is controlled to extend and retract synchronously, the two steering wheels 1 on both sides are driven to realize precise steering, the power wheel 2 is controlled to realize the forward movement, the backward movement and the brake operation of the trolley, when an obstacle is encountered, the steering system can quickly respond, the direction of the steering wheel 1 is adjusted through the swing oil cylinder 12, flexible obstacle avoidance is realized, the chassis can be compatible with automatic driving or remote control mode, and unmanned or semi-automatic operation is realized.

[0053] It is suitable for logistics places such as storage and sorting, can reliably complete high-precision steering and carrying operation in narrow space, provides a high-mobility chassis platform for various service robots, supports complex path navigation, is suitable for occasions such as power, chemical industry and mine that need automatic inspection and special environment operation, has high passability and adaptability, as a scientific research test platform or education and teaching equipment, facilitates the development of intelligent control, robot kinematics and other related research and teaching experiment, can be applied to mobile equipment that needs multi-terrain adaptability in agriculture, garden and the like, supports multi-angle and high-sensitivity steering requirements. Embodiment 2

[0054] On the basis of embodiment 1, the following is added:

[0055] Referring to Figure 2 , the steering wheel 1 is rollingly installed on the swing wheel frame 11 and is swingingly installed at the two ends of the steering assembly 10 through the swing wheel frame 11. The swing wheel frame 11 is connected with the swing oil cylinder 12 through the swing connecting rod 13. The two ends of the swing connecting rod 13 are respectively hinged on one side of the swing wheel frame 11 and the extension end of the swing oil cylinder 12.

[0056] Referring to Figure 2The steering assembly 10 comprises an upper support plate 101 and a lower support plate 102, which are arranged in parallel and spaced apart from each other, and are connected and fixed between the upper support plate 101 and the lower support plate 102 by a hinged swing plate 103. The hinged swing plate 103 is arranged at both ends of the upper support plate 101 and the lower support plate 102 respectively, and one hinged swing plate 103 is arranged on each side of each end. The end of the hinged swing plate 103 is hinged to the swing wheel frame 11. The front side of the upper support plate 101 and the lower support plate 102 is blocked and installed by a front blocking plate 104.

[0057] Referring to Figure 2 The swing wheel frame 11 is provided with an axle mounting hole 111. The steering wheel 1 is rollingly mounted in the axle mounting hole 111. The swing wheel frame 11 is provided with a combined side plate 112 at the upper and lower swing ends. The swing wheel frame 11 is provided with a bearing seat 113 at the left and right hinged ends. The bearing seat 113 is provided with a bearing 114. The swing wheel frame 11 is hinged to the steering assembly 10 through the bearing seat 113 and the bearing 114.

[0058] Referring to Figure 2 The swing oil cylinder 12 is fixedly installed on the steering assembly 10 through a fixing block 121. A telescopic rod 122 is bidirectionally and telescopically installed in the swing oil cylinder 12. The telescopic rod 122 extends out of the swing oil cylinder 12 at both ends and is connected to the steering wheels 1 on both sides. The swing oil cylinder 12 is provided with a sealing head 123 at both ends. The sealing head 123 is in sliding and tightly sealing connection with the telescopic rod 122. A piston in the middle of the telescopic rod 122 divides the swing oil cylinder 12 into two sealed spaces. The two sealed spaces are respectively provided with oil holes 124, and are connected to an oil supply control system through the oil holes 124.

[0059] Referring to Figure 2 The swing connecting rod 13 is an arc-shaped connecting rod. The swing connecting rod 13 is hinged to one side of the swing wheel frame 11 through a connecting seat 131. The connecting seat 131 is fixedly arranged on the swing wheel frame 11.

[0060] The starting system is connected to the electric control and the hydraulic power source. The user issues a steering or driving instruction through the controller. The control system adjusts the oil supply pressure. The telescopic rod 122 in the swing oil cylinder 12 is driven to telescope through the oil holes 124. The action of the telescopic rod 122 drives the swing wheel frames 11 on both sides to swing synchronously through the swing connecting rod 13 and the connecting seat 131, so as to realize the synchronous steering of the steering wheels 1. The power wheels 2 are responsible for the forward movement, backward movement and braking action of the trolley, realizing the overall movement and accurate parking. The whole steering mechanism relies on the rigid frame and multiple hinges of the steering assembly 10, realizes high sensitivity and high synchronization of the steering response, and can realize automatic driving, remote control, obstacle avoidance and other intelligent operation modes. Example 3

[0061] On the basis of embodiment 1, increase:

[0062] Referring to Figure 1 , the power wheels 2 are rollingly installed on both sides of the transmission box 21, one side of the transmission box 21 is provided with a motor box 211, a transmission assembly is installed in the transmission box 21, and the power wheels 2 on both sides of the transmission box 21 are connected with each other synchronously through the transmission assembly in the transmission box 21. A motor is installed in the motor box 211, and the power wheels 2 are power-connected with the motor in the motor box 211 through the transmission assembly in the transmission box 21.

[0063] Referring to Figure 1 , the motor box 211 is connected with the control box 22 through control wires, one side of the control box 22 extends and is provided with a connection terminal 221, and the control system assembly in the control box 22 is connected with the motor box 211 and the swing oil cylinder 12 through the connection terminal 221.

[0064] Referring to Figure 1 , the motor box 211 and the control box 22 are respectively connected with the battery box 23 through power supply wires, the battery box 23 is installed close to both sides of the frame 3, one end of the battery box 23 is hinged on the frame 3 through a hinged mounting plate 231, and the other end is fixed on the frame 3 through an installation buckle 232.

[0065] Referring to Figure 1 , the frame 3 includes two connection side plates 31 arranged in parallel with each other, both ends of the connection side plates 31 are respectively provided with mounting notches 311 and are used for mounting the steering wheels 1 and the power wheels 2 and their connecting components, a rotary seat plate 32 is arranged on the upper surface of the connection side plates 31, and a bottom guard plate 33 is arranged on the lower surface of the connection side plates 31.

[0066] Two connection side plates 31 arranged in parallel with each other are assembled, mounting spaces for the steering wheels 1 and the power wheels 2 and their connecting components are respectively reserved at the mounting notches 311 at both ends of the connection side plates 31, the rotary seat plate 32 is mounted on the upper surface of the connection side plates 31, and the bottom guard plate 33 is mounted on the lower surface of the connection side plates 31, thereby forming a basic frame 3 structure.

[0067] The transmission box 21 is fixed at the rear end of the frame 3, the power wheels 2 are rollingly installed on both sides of the transmission box 21, the motor box 211 is installed on one side of the transmission box 21, and the power wheels 2 are power-connected with the motor in the motor box 211 through the preset transmission assembly, so that the power wheels on both sides can synchronously rotate.

[0068] The control box 22 is installed at a suitable position, the motor box 211 is connected with the control box 22 through control wires, the connection terminal 221 is arranged on one side of the control box, and is used for connecting the motor box 211 and the swing oil cylinder 12, thereby realizing unified control.

[0069] The battery box 23 is installed close to both sides of the frame 3, one end is hinged to the frame through a hinged mounting plate 231, and the other end is locked and fixed through a mounting buckle 232, so that the battery box is firm and convenient to disassemble and maintain.

[0070] At the front end of the connecting side plate 31, a mounting gap is reserved, and a steering wheel 1 and its related steering structure, such as a swing wheel frame 11 and a swing oil cylinder 12, are installed respectively, so that the assembly and connection of the power and steering mechanisms are completed.

[0071] The above are preferred embodiments of the utility model, which do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A trolley chassis with an arm truck steering arrangement, characterized in that The utility model relates to a kind of steering wheel (1), horizontal axis rolling is combined vertical axis swing installation, for controlling trolley movement steering; Power wheel (2), horizontal axis rolling installation, for controlling and driving trolley movement and brake; Frame (3), for installing steering wheel (1) and power wheel (2) and its control system component; The steering wheel (1) is drivingly connected swing oil cylinder (12), and the swing of the swing oil cylinder (12) is controlled by swing oil cylinder (12) and realizes the steering control of steering wheel (1), the swing oil cylinder (12) is two-way cylinder and two ends are respectively controlled connection steering wheel (1) of the both sides of frame (3) and synchronous telescopic control. The steering wheel (1) is rollingly installed on swing wheel frame (11), and is swingly installed on the both ends of steering assembly (10) by swing wheel frame (11), the swing wheel frame (11) is connected swing oil cylinder (12) by swing link (13), and the both ends of the swing link (13) are respectively hinged on one side of swing wheel frame (11) and the telescopic end of swing oil cylinder (12).

2. A trolley chassis with arm truck steering arrangement according to claim 1 characterised in that: The steering assembly (10) includes upper support plate (101) and lower support plate (102), the upper support plate (101) and the lower support plate (102) are spaced apart and arranged in parallel, the upper support plate (101) and the lower support plate (102) are connected and fixed by hinged swing plate (103) between the upper support plate (101) and the lower support plate (102), the hinged swing plate (103) is respectively arranged at the both ends of the upper support plate (101) and the lower support plate (102), and one hinged swing plate (103) is respectively arranged on the both sides of each end, the end of the hinged swing plate (103) is hinged with the swing wheel frame (11), and the front side of the upper support plate (101) and the lower support plate (102) is blocked and installed by front blocking plate (104).

3. A trolley chassis with arm truck steering arrangement according to claim 2, characterized in that: The swing wheel frame (11) is provided with wheel shaft mounting hole (111) on it, the steering wheel (1) is rollingly installed in the wheel shaft mounting hole (111), the swing wheel frame (11) is provided with combined side plate (112) on the upper and lower swing ends respectively, the swing wheel frame (11) is provided with bearing seat (113) on the left and right hinged ends respectively, the bearing seat (113) is provided with bearing (114) on it, and the swing wheel frame (11) is hinged with the steering assembly (10) by the bearing seat (113) and the bearing (114).

4. The dolly chassis with arm truck steering architecture of claim 2, wherein: The swing oil cylinder (12) is fixedly installed on the steering assembly (10) by fixing block (121), the telescopic rod (122) is telescopically installed in the swing oil cylinder (12), the both ends of the telescopic rod (122) respectively extend out of the swing oil cylinder (12) and are connected with the steering wheels (1) on the both sides, the both ends of the swing oil cylinder (12) are respectively provided with sealing head (123), the sealing head (123) is slidably and tightly sealed with the telescopic rod (122), the piston in the telescopic rod (122) divides the swing oil cylinder (12) into two sealed spaces, and the two sealed spaces are respectively provided with oil hole (124), and are connected with the oil supply control system through the oil hole (124).

5. The dolly chassis with arm truck steering architecture of claim 2, wherein: ​ 6. The dolly chassis with arm truck steering architecture of claim 2, wherein: The swing connecting rod (13) is a connecting rod with an arc, and the swing connecting rod (13) is hinged to the swing wheel frame (11) swing side through a connecting seat (131), and the connecting seat (131) is fixedly arranged on the swing wheel frame (11).

7. The dolly chassis with arm truck steering architecture of claim 1, wherein: The power wheel (2) is rollably installed on both sides of the transmission box (21), the transmission box (21) is provided with a motor box (211) on one side, the transmission box (21) is provided with a transmission assembly, the power wheels (2) on both sides of the transmission box (21) are connected with each other synchronously through the transmission assembly in the transmission box (21), the motor box (211) is provided with a motor, and the power wheel (2) is connected with the motor in the motor box (211) through the transmission assembly in the transmission box (21).

8. A trolley chassis with arm trolley steering arrangement according to claim 7, characterized in that: The motor box (211) is connected with the control box (22) through control wires, one side of the control box (22) extends and is provided with a connecting terminal (221), and the control system assembly in the control box (22) is connected with the motor box (211) and the swing oil cylinder (12) through the connecting terminal (221).

9. A trolley chassis with arm trolley steering arrangement according to claim 8, characterized in that: The motor box (211) and the control box (22) are respectively connected with the battery box (23) through power supply wires, the battery box (23) is installed close to both sides of the vehicle frame (3), one end of the battery box (23) is hinged to the vehicle frame (3) through a hinge mounting plate (231), and the other end is locked and fixed to the vehicle frame (3) through a mounting buckle (232).

10. A dolly chassis with an arm truck steering arrangement according to claim 9, characterized in that: The vehicle frame (3) comprises two parallel connecting side plates (31), the connecting side plates (31) are respectively provided with mounting notches (311) at two ends and are used for mounting the steering wheel (1) and the power wheel (2) and connecting members thereof, the connecting side plates (31) are provided with rotary seat plates (32) on upper surfaces and bottom guard plates (33) on lower surfaces.

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