Golf cart drive assembly

Abstract

The present invention discloses a golf cart drive assembly, which belongs to the technical field of arrangement of vehicle power devices or transmission devices. The golf cart drive assembly includes a power source and a beam frame, wherein the beam frame is used to support and fix the power source, and a reducer and a gearbox are installed at the output end of the power source, and the beam frame is located below the gearbox and is installed with a load-bearing beam. The present invention adopts the design of a radiator and a beam frame, wherein the beam frame is installed on the outside of the power source, and the main rod, longitudinal frame, load-bearing beam and anti-slip plate of the beam frame can form a cage structure, which has a better effect of protecting the power source. The hollow design of the main rod has a light weight, and the radiator actively dissipates heat from the power source to adapt to the use environment of the golf cart. When the vehicle is moving, airflow is generated in the main rod, and the heat dissipation pipe of the radiator is used for air cooling to improve the heat dissipation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of arrangement of a vehicle power device or a transmission device, and in particular relates to a driving assembly of a golf cart. Background Art

[0002] Golf carts, also known as electric golf carts or gas-powered golf carts, are environmentally friendly passenger vehicles designed for golf courses. This type of vehicle is not only used on golf courses, but also widely used in resorts, villa areas, garden hotels and tourist attractions. With the improvement of people's living standards and the emphasis on health, leisure and entertainment, the market demand for golf carts is growing.

[0003] An electric golf cart is one whose power source is an electric motor, while a gas-powered golf cart is one whose power source is a fuel engine;

[0004] When the existing electric golf carts are used on golf courses, the road surface is relatively rugged. The golf carts need to go up and down hills back and forth, which may cause the chassis to be scraped. In addition, the torque requirement is high, resulting in the power source working under the state of low speed and high torque, and large changes in speed, resulting in serious heat. If the power source is not protected and directly exposed to the air for heat dissipation, there is a risk of bumping. In view of this, a golf cart drive assembly is provided. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a golf cart driving assembly.

[0006] The technical solution adopted to solve the above technical problems is:

[0007] A golf cart driving assembly includes a power source and a beam frame, wherein the beam frame is used to support and fix the power source, a reducer and a gearbox are installed at the output end of the power source, and the beam frame is located below the gearbox and is installed with a load-bearing beam;

[0008] The beam frame includes two main rods arranged horizontally, through holes are provided in the middle of the two main rods, the ends of the two main rods are bent close to each other and fixedly connected through protective plates, a longitudinal frame is fixedly installed at the bending of the main rods, and the power source, reducer and gearbox are installed in a cage-shaped space formed between the protective plate, the two main rods, the longitudinal frame and the load-bearing beam;

[0009] A radiator is installed on the upper surface of the power source, and the radiator includes a shell, a connecting cavity is built in the shell, a heat dissipation pipe is installed at the port of the connecting cavity, a through hole is opened at the main rod corresponding to the heat dissipation pipe, and the heat dissipation pipe extends into the through hole through the through hole;

[0010] The protective plate comprises a buffer plate, a hollow energy absorbing cylinder is installed on the buffer plate facing the opening of the through hole, and a reinforcing plate is installed on the side of the buffer plate facing the power source.

[0011] When in use, the power source provides power for the golf cart, and the main rod of the beam frame runs through the bottom of the golf cart to strengthen the overall body. The hollow design of the main rod and the through holes extending left and right through the entire body can allow air to flow through the main rod from the inside through the entire body when the vehicle is moving, and the power source drives the golf cart forward. Because the golf cart is traveling on a rugged road, the speed is slow and the torque requirement is high, resulting in the power source working in a low-speed and high-torque state, which generates serious heat. A special radiator needs to be designed. The radiator transfers the heat of the power source to the heat exchange medium inside the connecting cavity of the shell, and the heat is directly blown by the airflow generated in the main rod by the vehicle moving through the through hole through the heat pipe to supplement the heat dissipation. The protective plate can protect the power source and the radiator when moving forward to avoid collision, and the energy absorbing tube of the protective plate will gather and guide the airflow at the front position of the vehicle to the main rod, increase the airflow speed in the through hole and thereby improve the heat dissipation efficiency of the heat pipe, and the energy absorbing tube can deform when impacted to absorb the impact force and reduce the impact damage caused by the collision.

[0012] Furthermore, a fixed bracket is fixedly installed on the outside of the power source, a connecting piece is installed at the edge of the fixed bracket, the connecting piece is fixedly connected to the main rod, a limit block corresponding to the connecting piece is provided on the circumferential outer wall of the main rod, and a hole is opened at the corresponding through hole of the connecting piece.

[0013] Through the above technical scheme, the fixed bracket is an L-shaped three-dimensional plate structure, which can semi-enclose the bottom and vertical side walls of the power source, and is connected to the connecting piece through a rubber sleeve and threading to perform shock-absorbing fixation to prevent resonance. The connecting piece is a clamp structure divided into upper and lower parts. The limit block can prevent the connecting piece from being torsionally stressed, thereby ensuring the stable installation of the power source. A hole can be opened to avoid the heat dissipation pipe to ensure smooth heat dissipation. By opening a hole at the installation connecting piece, the connecting piece can be used to improve the structural strength of the through hole in the main rod to ensure the structural stability of the vehicle body.

[0014] Furthermore, the energy absorbing tube is connected to an energy absorbing plate with an opening at one end away from the through hole. The energy absorbing plate is designed to be perpendicular to the axial direction of the energy absorbing tube. The inner diameter of the end of the energy absorbing tube close to the main rod is consistent with the inner diameter of the through hole. The middle part of the energy absorbing plate is bent toward the power source to form an arc surface, and the opening of the energy absorbing plate is located at the deepest part of the arc surface.

[0015] Through the above technical solution, the energy absorbing tube is trumpet-shaped, which can introduce as much air as possible into the through hole. The arc-shaped structure of the energy absorbing plate further improves the air guiding ability, allowing more air to enter the energy absorbing tube. In addition, the optimization of the opening position of the energy absorbing plate reduces the obstruction of the air and ensures that the airflow can flow smoothly into the through hole of the main rod.

[0016] Further, a filling valve is installed on the side wall of the housing. The filling valve is connected to the communication cavity in a conducting manner. A hose is installed between the housing and the heat dissipation pipe. A rubber block is sleeved and installed at the through hole of the heat dissipation pipe.

[0017] Through the above technical solution, the filling valve can supplement the heat exchange medium for the housing, so that the communication cavity can always be filled with the heat exchange medium. The hose can enable the heat dissipation pipe to adapt to the difference in vibration frequencies between the main rod and the power source, preventing the heat dissipation pipe from being bent and damaged. The rubber block is used to separate the inner wall at the through hole, which can prevent the heat dissipation pipe from being worn by the main rod and the connecting piece.

[0018] Further, the power source includes a motor. A transmission member is arranged at the driving shaft of the motor. A rotating shaft is installed at the end of the transmission member. The rotating shaft extends into the communication cavity. Centrifugal blades are installed on the circumferential outer wall of the rotating shaft.

[0019] Through the above technical solution, the motor provides rotational driving force. The transmission member is a chain and sprocket set with a protective box, which can drive the rotating shaft to rotate synchronously when the motor is working. The rotating shaft can make the heat exchange medium in the communication cavity flow at high speed in the heat dissipation pipe through the centrifugal blades, efficiently transporting the heat at the power source to the through hole of the main rod for dynamic heat exchange and cooling.

[0020] Further, an output hole and a return hole are opened inside the housing. The position of the output hole corresponds to the centrifugal blades. The return hole is arranged avoiding the centrifugal blades. The inner diameter of the communication cavity at the position of the centrifugal blades is the same as the rotation radius of the centrifugal blades. The inner diameter of the communication cavity is larger than the outer wall of the rotating shaft.

[0021] Through the above technical solution, the output hole and the return hole are arranged side by side, which can disperse the heat exchange medium to the surface of the entire power source, increasing the effective heat exchange area. The output hole and the return hole are matched with a U-shaped heat dissipation pipe, and the heat exchange medium keeps flowing unidirectionally during flow, circulating in a circular channel, with less flow resistance, faster flow rate, and higher heat exchange efficiency.

[0022] Further, a suspension seat is installed at the longitudinal frame of the main rod. A first bolt hole is opened at the end of the suspension seat. A support arm is installed at the first bolt hole. A steering knuckle is installed at the end of the support arm away from the main rod.

[0023] Through the above technical solution, the suspension seat is in a C-shaped structure and can be directly welded to the circumferential outer wall of the main rod for connecting the support arm and the steering knuckle. A shock absorber can be installed at the position of the support arm, and a half shaft and a tire can be installed at the position of the steering knuckle, quickly transmitting the power of the power source to the tire position.

[0024] Furthermore, the suspension seat is provided with a second bolt hole below the bottom surface of the gearbox, the load-bearing beam is detachably mounted between the second bolt holes, and the load-bearing beam is fixedly connected to the gearbox via bolts.

[0025] Through the above technical solution, a rubber sleeve is arranged at the dead corner of the load-bearing beam to reduce the resonance between the vehicle body and the gearbox. An eccentric screw and a bolt hole are passed through the rubber sleeve to connect the two. The eccentric screw can adjust the height of the load-bearing beam. When the rubber sleeve is under stress fatigue, it can be disassembled and replaced. When repairing the gearbox, the position of the load-bearing beam can be lowered. The gearbox can be lifted horizontally away from the protective plate and installed back without complete disassembly and separation, which makes maintenance convenient.

[0026] Furthermore, a mesh plate is detachably mounted on one end of the buffer plate away from the power source, and the mesh plate completely covers the energy absorbing plate.

[0027] Through the above technical solution, the mesh plate can filter the air before it enters the energy absorbing plate, preventing debris such as grass leaves from entering the main pole and ensuring smooth air flow.

[0028] Furthermore, the two ends of the main rod are symmetrically bent, a bottom plate is installed in the middle of the main rod, and a reinforcement frame is fixedly installed between the bottom plate and the longitudinal frame.

[0029] Through the above technical solution, the main poles are far away from each other, which can ensure a large load-bearing coverage area. The bottom plate can increase the flatness of the middle position to ensure convenient installation of the upper vehicle body. The strengthened frame and bottom plate design can improve the bottom strength of the vehicle body and avoid direct impact on the chassis due to uneven bottom surface. The bottom plate is directly connected to the main pole, which can conduct and disperse the heat in the main pole to the entire bottom of the vehicle body, thereby improving the heat dissipation efficiency.

[0030] The beneficial effects of the present invention are as follows:

[0031] (1) The present invention adopts the design of the radiator and the beam frame. The beam frame is installed on the outside of the power source. The main rod, longitudinal frame, load-bearing beam and anti-slip plate of the beam frame can form a cage structure, which has a better protection effect on the power source. The hollow design of the main rod has a light weight. The radiator actively dissipates heat from the power source, which is suitable for the use environment of the golf cart. When the vehicle is moving, airflow is generated in the main rod, which cooperates with the heat dissipation pipe of the radiator to perform air cooling and improve the heat dissipation effect.

[0032] (2) The present invention optimizes the protective plate. When the power source is installed, the protective plate at the front of the vehicle is used to protect the power source from collision. The energy absorbing tube and the energy absorbing plate can collapse and absorb energy when impacted, thereby reducing the impact force. When not impacted, the shape of the energy absorbing tube and the energy absorbing plate can gather air, allowing more air to enter the through hole of the main rod, thereby increasing the air flow speed in the through hole and further enhancing the cooling capacity of the radiator.

[0033] (3) The present invention improves the radiator. In different golf courses, if the slope of the site is relatively gentle, a non-assisted radiator can be used. The heat of the power source is absorbed by the shell and the heat dissipation pipe of the heat exchanger, and the heat is cooled by contact with the atmosphere, thereby reducing the failure rate of the radiator. In sites with large ground undulations, a radiator with centrifugal blades can be used to circulate the heat exchange medium in the shell and the heat dissipation pipe to improve the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is the overall structure diagram of the present invention;

[0035] Figure 2 It is a schematic diagram of the structure of the present invention when the bottom plate is removed;

[0036] Figure 3 It is the installation position diagram between the beam frame and the motor of the present invention;

[0037] Figure 4 is a diagram of the installation position between the beam frame and the gearbox of the present invention;

[0038] Figure 5 It is a structural schematic diagram of the beam frame of the present invention where the power source is installed;

[0039] Figure 6 It is a schematic diagram of the disassembly of the beam frame of the present invention where the power source is installed;

[0040] Figure 7 It is a schematic diagram of the structure between the motor and the radiator of the present invention;

[0041] Figure 8 is a schematic diagram of the position between the beam frame and the radiator of the present invention;

[0042] Fig. 9 It is a structural schematic diagram of the radiator of the present invention;

[0043] Fig.10 It is a cross-sectional schematic diagram of the heat sink of the present invention when the rotating shaft is installed;

[0044] Fig.11 It is a cross-sectional schematic diagram of the heat sink of the present invention when the rotating shaft is not installed.

[0045] Figure numerals: 1. power source; 11. motor; 12. transmission member; 13. rotating shaft; 14. centrifugal blade; 2. beam frame; 21. main rod; 22. through hole; 23. longitudinal frame; 24. suspension seat; 25. connecting piece; 26. bolt hole one; 27. bolt hole two; 28. limit block; 29. ​​through hole; 3. support arm; 4. bottom plate; 5. protective plate; 51. buffer plate; 52. energy absorption plate; 53. energy absorption tube; 54. strengthening plate; 55. mesh plate; 6. radiator; 61. shell; 62. heat dissipation pipe; 63. filling valve; 64. hose; 65. fixing bracket; 66. rubber block; 67. output hole; 68. reflux hole; 69. connecting cavity; 7. reducer; 8. gearbox; 9. load-bearing beam. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0047] like Figure 1-Figure 11 As shown, this embodiment provides a golf cart driving assembly, including a power source 1 and a beam frame 2, wherein the power source 1 provides driving force for the vehicle, wherein the Figure 3 and Figure 7 The output end of the power source 1 is equipped with a reducer 7 and a gearbox 8 for speed change and forward and reverse control. In order to ensure the stable installation of the power source 1, the beam frame 2 is used to support and fix the power source 1. The beam frame 2 is located below the gearbox 8 and is equipped with a load-bearing beam 9. The power source 1, the reducer 7 and the gearbox 8 can be installed and fixed under the vehicle body to improve the installation stability.

[0048] Regarding the beam frame 2, in order to improve the protection effect of the power source 1 on the unpaved road, refer to Figure 2 and Figure 3 The beam frame 2 includes two horizontally arranged main rods 21, which extend horizontally to the left and right and are fixed to the bottom of the vehicle body. The extension direction of the main rods 21 is consistent with the forward direction of the vehicle, and the overlap range with the vehicle body is large, so that the installation between the power source 1 and the vehicle body is stable and can help improve the strength of the vehicle body. Among them, the middle parts of the two main rods 21 are provided with through holes 22, which can reduce the weight of the main rods 21 and reduce energy consumption. The ends of the two main rods 21 are bent close to each other and fixedly connected by the protective plate 5 to form a hollow cage-like space. A longitudinal frame 23 is fixedly installed at the bending part of the main rod 21, and is horizontally pulled and reinforced in the middle. From a top-down angle, an overall frame of "eye" can be formed, which increases the torsional resistance of the beam frame 2 and further improves the structural strength. The power source 1, the reducer 7 and the gearbox 8 are installed in the cage-like space formed between the protective plate 5, the two main rods 21, the longitudinal frame 23 and the load-bearing beam 9, and the protective effect is good;

[0049] Regarding the power source 1, in order to improve the adaptability of the power source 1 to the undulating road surface, refer to Figure 8 and Fig.11 A radiator 6 is installed on the upper surface of the power source 1. The radiator 6 is installed on the top, away from the ground for safety, and convenient to open the power cabin cover from the top for maintenance. The radiator 6 includes a shell 61. The shell 61 is made of aluminum material, has a good thermal conductivity, and can quickly absorb the heat generated by the power source 1. The shell 61 has a built-in connecting cavity 69, and the connecting cavity 69 is filled with a heat exchange medium. At the same time, a heat dissipation pipe 62 is installed at the port position of the connecting cavity 69, and the heat exchange medium can flow into the heat dissipation pipe 62. The heat dissipation pipe 62 is a thin-walled pipe, which can improve the heat exchange medium. The contact area with the outside atmosphere improves the heat dissipation efficiency. A through hole 29 is opened at the main rod 21 corresponding to the heat dissipation pipe 62. The heat dissipation pipe 62 extends into the through hole 22 through the through hole 29. When the vehicle is moving, because the main rod 21 is in the same direction as the vehicle, airflow can be generated in the through hole 22, so that air blows through a section of the heat dissipation pipe 62 located inside the main rod 21, and the airflow enters from the left and flows out from the right. The main rod 21 is basically horizontal and there is no obstruction inside, so that the airflow velocity is faster, which can assist the heat dissipation pipe 62 to perform efficient heat dissipation;

[0050] Regarding the protective plate 5, in order to adapt to the rugged ground conditions, refer to Figure 3 The protective plate 5 includes a buffer plate 51. The buffer plate 51 is an aluminum vertical plate structure and is fixedly installed at the left and right ends of the main rod 21 by bolts. A hollow energy-absorbing tube 53 is installed at the buffer plate 51 opposite to the opening of the through hole 22. The energy-absorbing tube 53 is designed in a trumpet shape and can collapse horizontally to absorb energy when impacted, thereby reducing the impact during collision. A reinforcing plate 54 is installed on the side of the buffer plate 51 opposite to the power source 1. The reinforcing plate 54 is installed parallel to the buffer plate 51 and closer to the power source 1, so as to limit the collapse space and prevent the energy-absorbing tube 53 from excessively collapsing and causing the power source 1 and the radiator 6 to be directly collided by the buffer plate 51. The energy-absorbing tube 53 can guide air into the through hole 22, so that more air can enter the main rod 21 when the vehicle is driving, thereby improving the heat dissipation efficiency.

[0051] In a further embodiment, referring to Figure 6 and Figure 7A fixing bracket 65 is fixedly installed on the outside of the power source 1. The fixing bracket 65 is an L-shaped three-dimensional plate structure, which can semi-enclose the bottom and vertical side wall of the power source 1. At the same time, a connecting piece 25 is installed at the edge of the fixing bracket 65. A vertical rubber sleeve is installed at the edge of the fixing bracket 65. A vertical threading is installed in the rubber sleeve. The threading is detachably connected to the connecting piece 25 for flexible connection and fixing to prevent resonance. The connecting piece 25 is fixedly connected to the main rod 21. The connecting piece 25 is a hoop structure divided into upper and lower parts, which can be directly buckled on the cylindrical main rod. The outside of the rod 21 is convenient for disassembly and assembly. A limit block 28 corresponding to the connecting piece 25 is provided on the outer wall of the main rod 21. The limit block 28 can prevent the connecting piece 25 from being twisted by force, thereby ensuring the stable installation of the power source 1. The connecting piece 25 is opened at the corresponding through hole 29 to avoid the through hole 29 to ensure that the heat dissipation pipe 62 is smoothly inserted into the inside of the main rod 21. By opening a hole at the installation connecting piece 25, the annular connecting piece 25 can be used to reinforce the through hole 29 of the main rod 21 to prevent the structural strength of the main rod 21 from being too low due to the opening of the hole, thereby ensuring the structural stability of the vehicle body.

[0052] In a further embodiment, referring to Figure 5 and Figure 6 The energy absorbing tube 53 is connected to an energy absorbing plate 52 with an opening at one end away from the through hole 22. The energy absorbing plate 52 is designed to be perpendicular to the axial direction of the energy absorbing tube 53, so that air in a larger range can be introduced into the energy absorbing tube 53. The inner diameter of the end of the energy absorbing tube 53 close to the main rod 21 is consistent with the inner diameter of the through hole 22. The middle part of the energy absorbing plate 52 is bent toward the power source 1 to form an arc surface. The arc structure of the energy absorbing plate 52 further improves the air guiding ability, so that more air can enter the energy absorbing tube 53. The opening of the energy absorbing plate 52 is located at the deepest part of the arc surface. The optimization of the opening position of the energy absorbing plate 52 reduces the obstruction of the energy absorbing plate 52 and the inner wall of the energy absorbing tube 53 to the air, ensuring that the airflow can smoothly flow into the through hole 22 of the main rod 21.

[0053] In a further embodiment, referring to Figure 7A filling valve 63 is installed on the side wall of the shell 61. The filling valve 63 can replenish the heat exchange medium for the shell 61. The filling valve 63 is connected to the connecting chamber 69 so that the connecting chamber 69 can always be filled with the heat exchange medium. A hose 64 is installed between the shell 61 and the heat dissipation pipe 62. The hose 64 can make the heat dissipation pipe 62 adapt to the difference in vibration frequency between the main rod 21 and the power source 1 to prevent the heat dissipation pipe 62 from being bent and damaged. The heat dissipation pipe 62 is located at the through hole 29 and is sleeved with a rubber block 66. The inner wall of the through hole 29 is separated by the rubber block 66 to prevent the heat dissipation pipe 62 from being worn by the main rod 21 and the connecting member 25. A hole can be opened on the rubber block 66 to improve the deformation ability of the rubber block 66 and further reduce the transmission of vibration. In addition, the opening of the rubber block 66 can allow part of the air inside the through hole 22 to be dissipated upward, so that the heat dissipation pipe 62 outside the main rod 21 can also be blown by the airflow to dissipate heat, and the outer surface of the heat dissipation pipe 62 is fully utilized to cool the internal heat exchange medium.

[0054] In a further embodiment, referring to Fig. 9 and Fig.10 The power source 1 includes a motor 11, which provides a rotational driving force. A transmission member 12 is provided at the driving shaft of the motor 11, and a rotating shaft 13 is installed at the end of the transmission member 12. The transmission member 12 is a chain and sprocket set with a protective box, which can drive the rotating shaft 13 to rotate synchronously when the motor 11 is working. The rotating shaft 13 extends into the connecting cavity 69, and the outer wall of the circumference of the rotating shaft 13 is installed with centrifugal blades 14. The heat exchange medium adopts a liquid heat exchange medium. The rotating shaft 13 can make the heat exchange medium in the connecting cavity 69 flow at a high speed in the heat dissipation pipe 62 through the centrifugal blades 14, and efficiently transport the heat at the power source 1 to the through hole 22 of the main rod 21 to perform dynamic heat exchange and cooling.

[0055] In a further embodiment, referring to Fig.10 An output hole 67 and a return hole 68 are provided inside the shell 61. The output hole 67 and the return hole 68 are arranged side by side, so that the heat exchange medium can be dispersed to the surface of the entire power source 1, thereby increasing the effective heat exchange area. The position of the output hole 67 corresponds to the centrifugal blade 14, and the return hole 68 is arranged away from the centrifugal blade 14. The output hole 67 and the return hole 68 are matched with the U-shaped heat dissipation pipe 62. When flowing, the heat exchange medium maintains a unidirectional flow and circulates in an annular channel. The inner diameter of the connecting cavity 69 located at the centrifugal blade 14 is consistent with the rotation radius of the centrifugal blade 14, ensuring that the heat exchange medium can smoothly enter the output hole 67 during centrifugation. The inner diameter of the connecting cavity 69 is larger than the outer wall of the rotating shaft 13, and the resistance of the heat exchange medium when flowing horizontally is smaller, the flow rate is faster, and the heat exchange efficiency is higher.

[0056] In a further embodiment, referring to Figure 4, at the longitudinal frame 23 of the main rod 21, a suspension seat 24 is installed. The suspension seat 24 is in a U-shaped structure, which can reduce its own weight while ensuring the structural strength. The suspension seat 24 can be directly welded to the outer circumferential wall of the main rod 21. A first bolt hole 26 is provided at the end of the suspension seat 24 for connecting the support arm 3. Two support arms 3 are arranged up and down. A shock absorber is installed between the two support arms 3. The top of the shock absorber is connected to the vehicle body to improve comfort. At one end of the support arm 3 away from the main rod 21, a steering knuckle is installed. The half shaft and the tire can be installed at the position of the steering knuckle. The half shaft is connected to the transmission 8 for power transmission. The motor 11 is not installed at the tire position but above the shock absorber to reduce the unsprung mass of the shock absorber and further improve comfort. Only one motor 11 is used instead of installing one for each tire, which reduces the manufacturing cost. The transmission 8 quickly transmits the power of the power source 1 to the tire position.

[0057] In a further embodiment, referring to Figure 4 and Figure 5 , a second bolt hole 27 is provided at a position where the suspension seat 24 is lower than the bottom surface of the transmission 8. Rubber sleeves are provided at the four corners of the bearing beam 9. When stress fatigue occurs in the rubber sleeves, they can be disassembled and replaced to reduce the resonance between the vehicle body and the transmission 8. An eccentric screw passes through the rubber sleeve and is connected to the second bolt hole 27. The eccentric screw can adjust the height of the bearing beam 9. Among them, the bearing beam 9 is detachably installed between the second bolt holes 27. The bearing beam 9 is fixedly connected to the transmission 8 through bolts. When repairing the transmission 8, by rotating the eccentric screw in the second bolt hole 27, the position of the bearing beam 9 can be lowered. Without completely disassembling and separating, the bearing beam 9 can be lowered by a certain distance, providing sufficient space, so that the transmission 8 can be horizontally lifted out and reinstalled in a direction away from the protection plate 5, making maintenance convenient.

[0058] In a further embodiment, referring to Figure 4 , a mesh plate 55 is detachably installed at one end of the buffer plate 51 away from the power source 1. The mesh plate 55 can filter the air before it enters the energy absorption plate 52. The mesh plate 55 completely covers the energy absorption plate 52, effectively preventing sundries such as grass leaves from entering the main rod 21, ensuring smooth air flow, and thus ensuring efficient heat dissipation of the heat dissipation pipe 62.

[0059] In a further embodiment, referring to Figure 2The two ends of the main rod 21 are symmetrically bent and are far away from each other in the main rod 21, which can ensure a large bearing coverage area and leave sufficient space to install a battery (not shown in the figure) to provide power for the motor 11, or when the motor 11 of the power source 1 is replaced with an internal combustion engine such as a diesel engine or a gasoline engine (not shown in the figure), a fuel tank can be installed here to provide fuel for the internal combustion engine. At the same time, the main rod 21 is far away from each other, which can ensure a large bearing coverage area. A bottom plate 4 is installed in the middle of the main rod 21. The bottom plate 4 can increase the flatness of the middle position to ensure convenient installation of the upper vehicle body and avoid direct impact on the chassis due to the uneven bottom surface. The bottom plate 4 is directly connected to the main rod 21, which can conduct and disperse the heat in the main rod 21 to the bottom of the entire vehicle body, thereby improving the heat dissipation efficiency. A reinforcing frame is fixedly installed between the bottom plate 4 and the longitudinal frame 23 to improve the bottom strength of the vehicle body.

[0060] The working principle of this embodiment is as follows:

[0061] The power source 1 provides power for the golf cart, and the power source 1 drives the golf cart forward. The use scene of the golf cart is relatively special. In order to create a golf environment, the road surface is relatively rugged. The golf cart needs to go back and forth up and down the slope. The vehicle speed is slow and the torque requirement is high. As a result, the power source 1 works under the state of low speed, high torque, and large speed changes. The heat is serious, and a special radiator 6 needs to be designed. The radiator 6 transfers the heat of the power source 1 to the heat exchange medium inside the connecting cavity 69 of the shell 61, and is spread out through the heat pipes 62 on both sides to fully contact with the outside air for heat dissipation;

[0062] The main rod 21 of the beam frame 2 passes through the bottom of the golf cart to strengthen the entire body. The main rod 21 is hollow and has through holes 22 extending left and right through the entire body. When the vehicle is moving, air can pass through the main rod 21 to generate airflow in the through holes 22. The heat dissipation pipe 62 is inserted into the through holes 22 and is directly blown by the airflow generated in the main rod 21 when the vehicle is moving to supplement heat dissipation.

[0063] When moving forward, if traveling on unpaved, steeply sloping ground, the front of the vehicle is likely to touch the ground. A protective plate 5 is installed at the front of the vehicle to protect the power source 1 and the radiator 6, thereby avoiding direct collision between the power source 1 and the radiator 6. The buffer plate 51 and the energy-absorbing plate 52 can be deformed when impacted to absorb the impact force and reduce the impact damage to the power source 1 and the radiator 6 caused by the collision. The buffer plate 51 and the energy-absorbing plate 52 of the protective plate 5 will gather and guide the airflow at the front of the vehicle to the main rod 21 due to their design, thereby increasing the airflow velocity in the through hole 22 and thereby increasing the heat dissipation efficiency of the heat pipe 62.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A golf cart driving assembly, comprising a power source (1) and a beam frame (2), wherein the beam frame (2) is used to support and fix the power source (1), and is characterized in that: The output end of the power source (1) is equipped with a reducer (7) and a gearbox (8), and the beam frame (2) is located below the gearbox (8) and is equipped with a load-bearing beam (9); The beam frame (2) comprises two main rods (21) arranged horizontally, a through hole (22) being provided in the middle of the two main rods (21), the ends of the two main rods (21) being bent close to each other and fixedly connected via a protective plate (5), a longitudinal frame (23) being fixedly installed at the bent portion of the main rods (21), and the power source (1), the reducer (7) and the gearbox (8) being installed in a cage-shaped space formed between the protective plate (5), the two main rods (21), the longitudinal frame (23) and the load-bearing beam (9); A radiator (6) is mounted on the upper surface of the power source (1), the radiator (6) comprising a shell (61), the shell (61) having a communication cavity (69) therein, a heat dissipation pipe (62) being mounted at the port of the communication cavity (69), a through hole (29) being formed on the main rod (21) at a position corresponding to the heat dissipation pipe (62), the heat dissipation pipe (62) extending into the through hole (22) via the through hole (29); The protective plate (5) comprises a buffer plate (51), a hollow energy absorbing cylinder (53) is installed on the buffer plate (51) at a position facing the opening of the through hole (22), and a reinforcing plate (54) is installed on a side of the buffer plate (51) facing the power source (1); An energy absorbing plate (52) with an opening is connected to the end of the energy absorbing tube (53) away from the through hole (22); the energy absorbing plate (52) is designed to be perpendicular to the axial direction of the energy absorbing tube (53); the inner diameter of the end of the energy absorbing tube (53) close to the main rod (21) is consistent with the inner diameter of the through hole (22); the middle of the energy absorbing plate (52) is bent toward the power source (1) to form an arc surface; and the opening of the energy absorbing plate (52) is located at the deepest part of the arc surface; The protective plate (5) and the energy absorbing cylinder (53) are both arranged at the front of the vehicle.

2. The golf cart drive assembly according to claim 1, wherein: A fixed bracket (65) is fixedly mounted on the outside of the power source (1), a connecting piece (25) is mounted on the edge of the fixed bracket (65), the connecting piece (25) is fixedly connected to the main rod (21), a limiting block (28) corresponding to the connecting piece (25) is provided on the circumferential outer wall of the main rod (21), and a hole is opened at a position corresponding to the through hole (29) of the connecting piece (25).

3. The golf cart drive assembly according to claim 1, wherein: A filling valve (63) is installed on the side wall of the housing (61), and the filling valve (63) is in conduction connection with the communication chamber (69). A hose (64) is installed between the housing (61) and the heat dissipation pipe (62), and a rubber block (66) is sleeved and installed on the heat dissipation pipe (62) at the through hole (29).

4. The golf cart drive assembly according to claim 1, wherein: The power source (1) comprises a motor (11), a transmission member (12) is arranged at the driving shaft of the motor (11), a rotating shaft (13) is mounted at the end of the transmission member (12), the rotating shaft (13) extends into the connecting cavity (69), and a centrifugal blade (14) is mounted on the circumferential outer wall of the rotating shaft (13).

5. The golf cart drive assembly according to claim 4, wherein: An output hole (67) and a return hole (68) are provided inside the housing (61); the output hole (67) is located corresponding to the centrifugal blade (14); the return hole (68) is arranged away from the centrifugal blade (14); the connecting cavity (69) is located at the centrifugal blade (14); the inner diameter of the connecting cavity (69) is consistent with the rotation radius of the centrifugal blade (14); and the inner diameter of the connecting cavity (69) is larger than the outer wall of the rotating shaft (13).

6. The golf cart drive assembly according to claim 1, wherein: The main rod (21) is provided with a suspension seat (24) at the longitudinal frame (23); a bolt hole (26) is provided at the end of the suspension seat (24); a support arm (3) is provided at the bolt hole (26); and a steering knuckle is provided at one end of the support arm (3) away from the main rod (21).

7. The golf cart drive assembly according to claim 6, wherein: The suspension seat (24) is provided with a second bolt hole (27) below the bottom surface of the gearbox (8); the load-bearing beam (9) is detachably mounted between the second bolt holes (27); and the load-bearing beam (9) is fixedly connected to the gearbox (8) by bolts.

8. The golf cart drive assembly of claim 1, wherein: A mesh plate (55) is detachably mounted on one end of the buffer plate (51) away from the power source (1), and the mesh plate (55) completely covers the energy absorbing plate (52).

9. The golf cart drive assembly of claim 1, wherein: The two ends of the main rod (21) are symmetrically bent, a bottom plate (4) is installed in the middle of the main rod (21), and a reinforcement frame is fixedly installed between the bottom plate (4) and the longitudinal frame (23).

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