Bidirectional synchronous telescopic electric cylinder for electric automobile

Abstract

The invention discloses a two-way synchronous telescopic electric cylinder for an electric automobile, and relates to the field of telescopic electric cylinders, the two-way synchronous telescopic electric cylinder comprises an electric cylinder body and a servo motor, the servo motor is fixedly mounted at one end of the electric cylinder body, and one end of the electric cylinder body is fixedly connected with a supporting mechanism; the supporting mechanism comprises a base and supporting tables symmetrically distributed along the center line of the base, and the bottoms of the two supporting tables are fixedly connected with lapping plates. The two electric cylinder bodies are both installed on the supporting mechanism, the supporting tables can determine the positions of the two electric cylinder bodies, and during actual use, the two supporting tables can move by a certain distance in the direction of the base, so that the positions of the electric cylinder bodies can be adjusted, a piston rod can be conveniently connected with other equipment, and the working efficiency is improved. And when the supporting table is moved, the gravity center position of the whole device does not change, and when the piston rod stretches out subsequently, the overall balance of the device is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of telescopic electric cylinders, and specifically to a bidirectional synchronous telescopic electric cylinder for electric vehicles. Background Art

[0002] In the modern industrial field, the bidirectional telescopic electric cylinder plays a key role in the operation of many devices due to its unique mechanical structure. Its remarkable feature is that it is equipped with two cylinder bodies, and the piston rods in the two cylinder bodies are arranged in opposite directions. This design endows the bidirectional telescopic electric cylinder with powerful power drive and precise control capabilities, and is widely used in fields such as seat adjustment, battery management systems, door control, etc. In the adjustment mechanism of an electric vehicle seat, the bidirectional synchronous telescopic electric cylinder can be used to realize functions such as the forward and backward movement, height adjustment, and backrest angle adjustment of the seat.

[0003] For example, in the "Bidirectional Synchronous Telescopic Electric Cylinder" with the publication number CN215634788U, it includes a motor and a right-angle commutator connected to the motor. The output end of the right-angle commutator is connected to bevel gear one, and bevel gear two and bevel gear three are respectively connected to both sides of bevel gear one. The rotating shafts of bevel gear two and bevel gear three are both connected to the telescopic mechanism.

[0004] However, in the prior art, the integrated structure adopted by the traditional bidirectional telescopic electric cylinder has obvious drawbacks. Although this structure ensures the rigidity and stability of the overall electric cylinder to a certain extent, due to the relatively fixed positions of each component, it lacks flexibility. Especially when connecting to other devices, this fixed structure greatly limits the selection of the connection position between the piston rod and other devices.

[0005] In some industrial scenarios with a compact space layout, where the equipment distribution is complex, there are extremely strict limitations on the installation position and angle of the bidirectional telescopic electric cylinder. Due to the inability to flexibly adjust the connection part according to the actual situation, the traditional integrated bidirectional telescopic electric cylinder is extremely likely to have a spatial conflict with the surrounding equipment, resulting in the piston rod being difficult to accurately dock with the target equipment, seriously affecting the normal installation and operation of the equipment. Summary of the Invention

[0006] The purpose of the present invention is to provide a bidirectional synchronous telescopic electric cylinder for electric vehicles, so as to solve the problem in the above background art that the traditional integrated bidirectional telescopic electric cylinder is extremely likely to have a spatial conflict with the surrounding equipment due to the inability to flexibly adjust the connection part according to the actual situation, resulting in the piston rod being difficult to accurately dock with the target equipment, seriously affecting the normal installation and operation of the equipment.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A bidirectional synchronous telescopic electric cylinder for electric vehicles, including an electric cylinder body and a servo motor. The servo motor is fixedly installed at one end of the electric cylinder body, and a support mechanism is fixedly connected to one end of the electric cylinder body.

[0008] The support mechanism includes a base and support platforms symmetrically distributed along its center line. At the bottom of both support platforms, there are fixed connection plates. On the inner wall of the base, there is a fixed partition plate. The lower surface of the connection plate is lapped on the upper surface of the partition plate. At the top of both support platforms, there are fixed connection positioning blocks, which are fixedly connected to one end of the electric cylinder body. On the top of one of the positioning blocks, there is a fixed connection first limiting plate, and on the top of the other positioning block, there is a fixed connection second limiting plate. When it comes to the connection of the electric cylinder with other equipment, the support mechanism can flexibly adjust the positions of the two support platforms. By precisely adjusting the positions of the support platforms, it can effectively ensure that the piston rods in the two electric cylinder bodies can be connected to two different equipment simultaneously and accurately. This process is of great significance for ensuring the stability and collaborative working efficiency of the entire equipment system, ensuring the precise docking and smooth operation between the equipment. The support platform supporting the electric cylinder body is one of the key components in the electric cylinder system. The main function of the support platform is to provide a stable support for the electric cylinder body and at the same time have the ability to adjust the position to meet the installation requirements under different working conditions.

[0009] Preferably, a protection plate is fixedly installed on the top of the base. The support platforms are located between the two protection plates. On one side of the base, there is a reduction motor, and the output shaft of the reduction motor is fixedly connected to a transmission rod.

[0010] Preferably, a gear shaft is rotatably installed vertically inside the base. On one end of the transmission rod and on the outer wall of the gear shaft, there are fixedly installed bevel gears, and the two bevel gears are meshed with each other.

[0011] Preferably, at the bottom of both connection plates, there are fixed connection limiting blocks. The limiting blocks are slidably connected between the two partition plates. Inside one of the limiting blocks, there is a fixedly installed first toothed rod, and inside the other limiting block, there is a fixedly installed second toothed rod.

[0012] Preferably, the first toothed rod and the second toothed rod are symmetrically arranged along the center line of the base and are arranged in opposite directions. Inside both limiting blocks, there are accommodation grooves for accommodating the first toothed rod and the second toothed rod.

[0013] Preferably, on the upper surface of the bevel gear on the gear shaft, there is a fixedly installed connecting gear. The connecting gear is located between the first toothed rod and the second toothed rod, and the connecting gear is meshed with the first toothed rod and the second toothed rod. When the gear shaft rotates clockwise, the power generated by this rotation will push the first toothed rod to move to the right, and at the same time push the second toothed rod to move to the left. At this time, the two support platforms will gradually approach each other; conversely, when the gear shaft rotates counterclockwise, the power direction changes, which will push the first toothed rod to move to the left and the second toothed rod to move to the right, causing the two support platforms to move away from each other.

[0014] Preferably, one end of the first limiting plate is fixedly connected with an adapter rod, and one end of the adapter rod is inserted into the inside of the second limiting plate.

[0015] Preferably, an arc-shaped groove with a curvature adapted to the engagement gear is formed inside one end of the limiting block. The edge of the limiting block and the edge of the partition plate are spliced with each other. The shape and size of the arc-shaped groove are perfectly adapted to the engagement gear. The design of the arc-shaped groove enables the engagement gear to be accurately received therein during high-speed operation, effectively avoiding interference with the two limiting blocks, and ensuring the smooth operation of the two limiting blocks during the splicing and separation processes.

[0016] Preferably, the engagement gear is located inside the arc-shaped groove, and one end of the first rack and one end of the second rack are both fixedly connected to the groove wall of the arc-shaped groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, the cylinders of both electric cylinders are installed on the support mechanism. The support platform can determine the positions of the cylinders of the two electric cylinders. During actual use, both support platforms can move a certain distance along the direction of the base, so as to adjust the positions of the cylinders of the electric cylinders, facilitating the connection of the piston rods to other devices. Moreover, when moving the support platform, the center of gravity position of the entire device will not change. When the piston rods extend subsequently, it will not affect the overall balance of the device, ensuring that this double-acting telescopic electric cylinder can maintain its stability when connected to most devices. A stable electric cylinder can ensure that the piston rod always maintains an accurate linear motion trajectory during the extension process, avoiding working errors caused by shaking or displacement, thereby effectively improving production efficiency and product quality. In addition, stability can also extend the service life of the device, reduce component wear and damage caused by vibration and unstable factors, and reduce the device maintenance cost. For this reason, due to its excellent stability, the double-acting telescopic electric cylinder can still operate reliably when connected to most devices.

[0019] 2. In the present invention, a partition plate is provided inside the base to determine the moving route of the support platform. At the same time, a slat and a limit block are provided on the outer wall and the bottom of the support platform respectively. The limit block is located between the two partition plates, which can effectively maintain the stability of the support platform to ensure that the support platform will not shake during the movement. During the movement of the support platform, the slat can slide closely against the surface of the partition plate, which not only plays a good guiding role, but also can share part of the load borne by the support platform to a certain extent, thereby enhancing the stability of the support platform. At the same time, limit blocks are symmetrically provided at the bottom of the support platform. When the support platform moves, the limit blocks can only translate along a predetermined direction under the constraint of the partition plate, which effectively limits the shaking and displacement of the support platform in the horizontal and vertical directions, ensures the stability of the support platform during the movement, and provides a solid and reliable support platform for the electric cylinder body. The two positioning blocks are respectively provided with a first limit plate and a second limit plate for fixing the electric cylinder body to prevent the electric cylinder body from shaking.

[0020] 3. In the present invention, the first gear rod and the second gear rod are arranged in the arc groove, which can not only ensure the structural stability of the first gear rod and the second gear rod, but also ensure that the connecting gear will not affect the normal splicing of the two limit blocks. The first gear rod and the second gear rod are arranged in the arc groove. The arc groove can not only provide a stable supporting structure for the first gear rod and the second gear rod, but also disperse the pressure on the gear rod during movement, effectively reducing the risk of deformation or damage of the gear rod, thereby ensuring its structural stability. At the same time, due to the unique layout of the arc groove, the possible interference area between the connecting gear and the two limit blocks is cleverly avoided, ensuring that the connecting gear will not cause any impact on the normal splicing of the two limit blocks during operation. Since the meshing relationship between the connecting gear and the first gear rod and the second gear rod is designed according to the module and the number of teeth, when the gear shaft continues to rotate, it can ensure that the thrust applied by the connecting gear to the first gear rod and the second gear rod is uniform and stable, thereby ensuring that the distance between the first gear rod and the second gear rod is always equal during the movement. This feature can play an important role in many work scenarios with extremely high requirements on displacement accuracy, such as positioning adjustment of precision instruments, precise assembly of automated production lines, etc., and improves the working accuracy and reliability of the entire electric cylinder system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a bidirectional synchronous telescopic electric cylinder for an electric vehicle of the present invention;

[0022] Figure 2 A top view of a bidirectional synchronous telescopic electric cylinder for an electric vehicle according to the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of a base of a bidirectional synchronous telescopic electric cylinder for an electric vehicle according to the present invention;

[0024] Figure 4 This is the bottom view of the support mechanism of a two-way synchronous telescopic electric cylinder for an electric vehicle according to the present invention;

[0025] Figure 5 This is a schematic three-dimensional structure diagram of the support mechanism of a two-way synchronous telescopic electric cylinder for an electric vehicle according to the present invention;

[0026] Figure 6 This is a schematic plan view of the gear shaft and the transmission rod of a two-way synchronous telescopic electric cylinder for an electric vehicle according to the present invention;

[0027] Figure 7 This is a schematic diagram of the limiting block and the connecting plate structure of a two-way synchronous telescopic electric cylinder for an electric vehicle according to the present invention.

[0028] In the figure: 1. Electric cylinder body; 2. Servo motor; 3. Support mechanism; 31. Base; 32. Protection plate; 33. First limiting plate; 34. Second limiting plate; 35. Support platform; 36. Limiting block; 37. Reduction motor; 38. Transmission rod; 39. Bevel gear; 310. Accommodating groove; 311. First rack; 312. Second rack; 313. Partition plate; 314. Connecting plate; 315. Positioning block; 316. Connecting rod; 317. Connecting gear; 318. Arc groove; 319. Gear shaft. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown: A two-way synchronous telescopic electric cylinder for an electric vehicle includes an electric cylinder body 1 and a servo motor 2. The servo motor 2 is fixedly installed at one end of the electric cylinder body 1, and a support mechanism 3 is fixedly connected to one end of the electric cylinder body 1;

[0031] The support mechanism 3 includes a base 31 and support platforms 35 symmetrically distributed along its center line. At the bottom of each of the two support platforms 35, there is a fixed connection with a bridging plate 314. On the inner wall of the base 31, there is a fixed installation of a partition plate 313. The lower surface of the bridging plate 314 is lapped on the upper surface of the partition plate 313. At the top of each of the two support platforms 35, there is a fixed connection with a positioning block 315. A fixed connection is established between the positioning block 315 and one end of the electric cylinder body 1. At the top of one of the positioning blocks 315, there is a fixed connection with a first limit plate 33, and at the top of the other positioning block 315, there is a fixed connection with a second limit plate 34;

[0032] On the top of the base 31, there is a fixed installation of a protection plate 32. The support platforms 35 are located between the two protection plates 32. On one side of the base 31, there is a reduction motor 37. The output shaft of the reduction motor 37 is fixedly connected with a transmission rod 38. Inside the base 31, there is a vertically rotating installation of a gear shaft 319. On one end of the transmission rod 38 and on the outer wall of the gear shaft 319, there are fixed installations of bevel gears 39, and the two bevel gears 39 are meshed with each other.

[0033] In this embodiment, the electric cylinder body 1 serves as the core load-bearing component of the entire electric cylinder system. Its main function is to accommodate the piston rod and the transmission mechanism. The piston rod plays a key role during the operation of the electric cylinder. It is responsible for converting the internal mechanical motion into external linear motion to achieve the driving or operation of other devices;

[0034] During actual use, the servo motor 2 plays an important role as a power source. When the electric cylinder starts to work, the servo motor 2 is started. Through the complex and precise transmission mechanism inside, its rotational force is transmitted to the piston rod, thereby pushing the piston rod out of the electric cylinder body 1. It is worth mentioning that in some application scenarios with high requirements for synchronization, two servo motors 2 are equipped. These two servo motors 2 operate synchronously with the same power, thereby ensuring that the two piston rods can achieve synchronous telescoping. This characteristic of synchronous telescoping is crucial in many devices that require precise control and coordinated operation, such as some large-scale machining equipment or automated production lines;

[0035] When it comes to the connection between the electric cylinder and other devices, the support mechanism 3 can flexibly adjust the positions of the two support platforms 35. By precisely adjusting the positions of the support platforms 35, it can effectively ensure that the piston rods in the two electric cylinder bodies 1 can be simultaneously and accurately connected to two different devices. This process is of great significance for ensuring the stability and collaborative working efficiency of the entire device system, ensuring the precise docking and smooth operation between devices;

[0036] The support platform 35 that supports the electric cylinder body 1 is one of the key components in the electric cylinder system. The main function of the support platform 35 is to provide a stable support for the electric cylinder body 1, and at the same time, it has the ability of position adjustment to meet the installation requirements under different working conditions. When adjusting the position of the electric cylinder body 1, the system provides power through the reduction motor 37. The output shaft of the reduction motor 37 is directly connected to the transmission rod 38. The other end of the transmission rod 38 is equipped with a precision-machined bevel gear 39. When the reduction motor 37 is started, the power is transmitted to the bevel gear 39 through the transmission rod 38. The bevel gear 39 meshes with the corresponding gear on the gear shaft 319, converting the rotational motion into the rotation of the gear shaft 319.

[0037] The rotation of the gear shaft 319 further drives the two support platforms 35 to move synchronously on the guide rails of the base 31. This design of the double support platforms 35 not only ensures the stability of the electric cylinder body 1 during the adjustment process, but also makes the position adjustment more accurate. By controlling the rotation direction and angle of the reduction motor 37, the displacement of the two support platforms 35 can be accurately controlled, thereby realizing the fine adjustment of the position of the electric cylinder body 1. This adjustment mechanism is particularly suitable for occasions that require high-precision docking.

[0038] The advantage of this design is that it can complete the position adjustment of the electric cylinder body 1 while keeping the center of gravity of the whole device unchanged. Traditional adjustment methods often require moving the whole device, which will cause the center of gravity to shift and affect the running stability of the equipment. However, this design avoids this problem by independently adjusting the position of the support platform 35, ensuring the stable operation of the equipment under various complex working conditions. Especially under high-speed movement or heavy-load working conditions, this structure can effectively reduce vibration and impact, and extend the service life of the electric cylinder.

[0039] In addition, this structure also has the characteristics of convenient maintenance. Since the transmission components such as the reduction motor 37, the transmission rod 38, and the bevel gear 39 are all installed inside the base 31, it not only protects the transmission system from the external environment, but also facilitates regular maintenance and upkeep. The connection between the gear shaft 319 and the support platform 35 adopts a modular design, which can be quickly disassembled when replacement or repair is needed, greatly reducing the downtime of the equipment;

[0040] The bridging plate 314 is made of thickened steel plates, having sufficient strength and stiffness to withstand various forces generated by the electric cylinder block 1 and the piston rod during operation. The bridging plate 314 is closely lapped on the partition plate 313. The partition plates 313 are evenly distributed inside the base 31, playing a good supporting and positioning role, effectively ensuring the stability of the support platform 35. At the same time, a cavity for accommodating the bridging plate 314 is specially reserved inside the base 31. This structure can not only prevent the support platform 35 from shaking in the horizontal direction, but also buffer the impact force from the outside to a certain extent, further improving the stability and reliability of the support platform 35. A positioning block 315 is provided at the top of the support platform 35 for connecting the electric cylinder block 1. The first limiting plate 33 and the second limiting plate 34 are respectively arranged on the two positioning blocks 315 to fix the electric cylinder block 1 and prevent the electric cylinder block 1 from shaking.

[0041] Embodiment 2: According to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown, limiting blocks 36 are fixedly connected to the bottoms of both bridging plates 314. The limiting blocks 36 are slidably connected between the two partition plates 313. A first rack 311 is fixedly installed inside one of the limiting blocks 36, and a second rack 312 is fixedly installed inside the other limiting block 36. The first rack 311 and the second rack 312 are symmetrically arranged along the center line of the base 31 and are arranged in opposite directions. Accommodation grooves 310 for accommodating the first rack 311 and the second rack 312 are formed inside the two limiting blocks 36. A connecting gear 317 is fixedly installed on the upper surface of the bevel gear 39 on the gear shaft 319. The connecting gear 317 is located between the first rack 311 and the second rack 312, and the connecting gear 317 is meshed with the first rack 311 and the second rack 312.

[0042] In this embodiment, the limiting blocks 36 are provided at the bottom of the bridging plate 314, which is located between the two partition plates 313. This layout can significantly improve the stability of the support platform 35 and lay a foundation for the reliable operation of the entire mechanical structure;

[0043] Inside the two limiting blocks 36, the first rack 311 and the second rack 312 are respectively built in. When the gear shaft 319 starts to rotate, it will drive the connecting gear 317 to rotate synchronously through mechanical transmission. Since the connecting gear 317 is closely meshed with the first rack 311 and the second rack 312, and the first rack 311 and the second rack 312 are symmetrically distributed on both sides of the connecting gear 317, under the drive of the connecting gear 317, the first rack 311 and the second rack 312 will displace in opposite directions, and the movement of these two racks can exactly realize the flexible adjustment of the positions of the two support platforms 35;

[0044] Combined Figure 4 Viewed, when the gear shaft 319 rotates clockwise, the power generated by this rotation will push the first rack 311 to move to the right, and at the same time push the second rack 312 to move to the left. At this time, the two support platforms 35 will gradually approach each other; conversely, when the gear shaft 319 rotates counterclockwise, the direction of the power changes, which will push the first rack 311 to move to the left and the second rack 312 to move to the right, causing the two support platforms 35 to move away from each other. It should be particularly noted that when the two support platforms 35 approach each other, the first rack 311 and the second rack 312 will respectively and precisely slide into the receiving grooves 310 of the opposite limiting blocks 36. Through this ingenious cooperation, it is ensured that the two limiting blocks 36 can be perfectly spliced together, further ensuring the stability and reliability of the entire structure.

[0045] Example 3: According to Figure 5 、 Figure 6 and Figure 7 shown, one end of the first limiting plate 33 is fixedly connected with an adapter rod 316. One end of the adapter rod 316 is inserted into the inside of the second limiting plate 34. An arc-shaped groove 318 whose arc is adapted to the engagement gear 317 is formed inside one end of the limiting block 36. The edge of the limiting block 36 is spliced with the edge of the partition plate 313. The engagement gear 317 is located inside the arc-shaped groove 318. One end of the first rack 311 and one end of the second rack 312 are both fixedly connected to the groove wall of the arc-shaped groove 318.

[0046] In this embodiment, the adapter rod 316 on the first limiting plate 33 is carefully forged from high-strength alloy steel. Its surface has been precisely ground and polished. It not only has excellent strength and wear resistance, but also can achieve high-precision and tight cooperation with the second limiting plate 34. One end of the adapter rod 316 is precisely inserted into the receiving groove 310 pre-opened in the second limiting plate 34. This plug-in connection method greatly enhances the connection stability between the first limiting plate 33 and the second limiting plate 34. When the two support platforms 35 move closer to or away from each other on the base 31, the adapter rod 316 can smoothly enter and exit the second limiting plate 34 according to the real-time movement state of the support platform 35. During the whole process, the cooperation between the adapter rod 316 and the second limiting plate 34 ensures the flexibility and stability of their relative movement. Under any working conditions, it can ensure that the first limiting plate 33 and the second limiting plate 34 are tightly connected, providing reliable limiting support for the electric cylinder cylinder body 1.

[0047] Meanwhile, the limit block 36, as a key component of the support platform 35 structure, is internally provided with a special arc-shaped groove 318. The shape and size of the arc-shaped groove 318 are perfectly adapted to the connecting gear 317. The design of the arc-shaped groove 318 enables the connecting gear 317 to be accurately accommodated therein during high-speed operation, effectively avoiding interference with the two limit blocks 36, ensuring the smooth operation of the two limit blocks 36 during the splicing and separation processes. Whether in the initial installation and commissioning stage of the bidirectional telescopic electric cylinder or during the long-term continuous operation process, this structure can ensure that the connecting gear 317 stably plays a transmission role while ensuring that the function of the limit block 36 is not affected, laying a solid structural foundation for the overall stability and reliability of the bidirectional telescopic electric cylinder. In practical applications, the bidirectional telescopic electric cylinder needs to frequently perform high-precision position adjustments and action switches. The delicate design of the connecting rod 316 and the arc-shaped groove 318 can ensure that the entire system always maintains a stable and reliable operating state under the working requirements of high speed and high precision, effectively improving production efficiency and product quality.

[0048] Usage method and working principle of this device: When in use, the servo motor 2 pushes the piston rod out of the electric cylinder body 1 through the transmission mechanism. The two servo motors 2 operate synchronously with the same power to achieve the purpose of synchronous telescoping. When connecting with other devices, the support mechanism 3 can adjust the positions of the two support platforms 35 to ensure that the piston rods in the two electric cylinder bodies 1 can be connected to the two devices simultaneously;

[0049] The adjustment power for the position of the support platform 35 comes from the reduction motor 37. When the reduction motor 37 operates, it drives the transmission rod 38 to rotate. By virtue of its own rotation, the transmission rod 38 transmits the power to the connected gear shaft 319. When the gear shaft 319 starts to rotate, the connecting gear 317 rotates synchronously. The special tooth shape design and installation position of the connecting gear 317 determine its unique transmission relationship with the first toothed rod 311 and the second toothed rod 312. During the rotation of the gear shaft 319, the connecting gear 317 will cleverly push the first toothed rod 311 and the second toothed rod 312 to move in opposite directions respectively, thereby realizing the adjustment of the positions of the two support platforms 35;

[0050] During the movement of the support platform 35, the bridging plate 314 at its bottom closely cooperates with the partition plate 313. The bridging plate 314 is always stably lapped on the partition plate 313. This structure can not only effectively disperse the pressure borne by the support platform 35, but also play a guiding role during the movement to ensure the smooth movement of the support platform 35. At the same time, the limit blocks 36 are always closely fitted between the two partition plates 313, further enhancing the stability of the support platform 35. A cavity for accommodating the bridging plate 314 is specially designed inside the base 31. The existence of this cavity can effectively limit the movement range of the bridging plate 314, preventing the support platform 35 from shaking due to uneven force during the movement, ensuring the stable and reliable of the entire support structure from multiple aspects;

[0051] Combined with Figure 4 , the dynamic process of the position adjustment of the support platform 35 can be more intuitively understood. When the gear shaft 319 rotates clockwise, the connecting gear 317 rotates clockwise synchronously. It will push the first rack 311 to move to the right, and at the same time push the second rack 312 to move to the left. The two support platforms 35 connected to the racks also move closer to each other accordingly. On the contrary, when the gear shaft 319 rotates counterclockwise, the connecting gear 317 rotates counterclockwise, pushing the first rack 311 to move to the left and the second rack 312 to move to the right. At this time, the two support platforms 35 will move away from each other. When the two support platforms 35 move closer to each other, the first rack 311 and the second rack 312 will respectively accurately enter the receiving grooves 310 of the opposite limit blocks 36, just like two perfect pieces of a jigsaw puzzle fitting together, ensuring that the two limit blocks 36 can be smoothly spliced together. It is worth mentioning that an arc-shaped groove 318 is specially provided inside the limit block 36. Its function is to cleverly accommodate the connecting gear 317. During the rotation of the connecting gear 317, the arc-shaped groove 318 provides it with a moving space, ensuring that the connecting gear 317 can operate normally without interfering with the normal splicing of the two limit blocks 36, thereby further improving the reliability and stability of the entire support structure.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bidirectional synchronous telescopic electric cylinder for an electric vehicle, comprising an electric cylinder body (1) and a servo motor (2), wherein the servo motor (2) is fixedly installed at one end of the electric cylinder body (1), and is characterized in that: One end of the electric cylinder body (1) is fixedly connected with a support mechanism (3). The support mechanism (3) includes a base (31) and support platforms (35) symmetrically distributed along its center line. Bottoms of the two support platforms (35) are fixedly connected with bridging plates (314). A partition plate (313) is fixedly installed on the inner wall of the base (31). The lower surface of the bridging plate (314) is lapped on the upper surface of the partition plate (313). Tops of the two support platforms (35) are fixedly connected with positioning blocks (315). A fixed connection is provided between the positioning blocks (315) and one end of the electric cylinder body (1). A first limiting plate (33) is fixedly connected to the top of one of the positioning blocks (315), and a second limiting plate (34) is fixedly connected to the top of the other positioning block (315).

2. The bidirectional synchronous telescopic electric cylinder for an electric vehicle according to claim 1, characterized in that: A protection plate (32) is fixedly installed on the top of the base (31). The support platforms (35) are located between the two protection plates (32). A reduction motor (37) is arranged on one side of the base (31). An output shaft of the reduction motor (37) is fixedly connected with a transmission rod (38).

3. The bidirectional synchronous telescopic electric cylinder for electric vehicles according to claim 2, characterized in that: A gear shaft (319) is rotatably installed vertically inside the base (31). Tapered gears (39) are fixedly installed on one end of the transmission rod (38) and the outer wall of the gear shaft (319), and the two tapered gears (39) are meshed with each other.

4. The bidirectional synchronous telescopic electric cylinder for an electric vehicle according to claim 2, characterized in that: Limit blocks (36) are fixedly connected to the bottoms of the two bridging plates (314). The limit blocks (36) are slidably connected between the two partition plates (313). A first toothed rod (311) is fixedly installed inside one of the limit blocks (36), and a second toothed rod (312) is fixedly installed inside the other limit block (36).

5. The bidirectional synchronous telescopic electric cylinder for an electric vehicle according to claim 4, characterized in that: The first toothed rod (311) and the second toothed rod (312) are symmetrically arranged along the center line of the base (31) and are arranged in opposite directions. Accommodation grooves (310) for accommodating the first toothed rod (311) and the second toothed rod (312) are formed inside the two limit blocks (36).

6. The bidirectional synchronous telescopic electric cylinder for an electric vehicle according to claim 3, wherein: An engagement gear (317) is fixedly installed on the upper surface of the tapered gear (39) on the gear shaft (319). The engagement gear (317) is located between the first toothed rod (311) and the second toothed rod (312), and the engagement gear (317) is meshed with the first toothed rod (311) and the second toothed rod (312).

7. The bidirectional synchronous telescopic electric cylinder for electric vehicles according to claim 1, characterized in that: One end of the first limiting plate (33) is fixedly connected with an engagement rod (316). One end of the engagement rod (316) is inserted into the second limiting plate (34).

8. A bidirectional synchronous telescopic electric cylinder for an electric vehicle according to claim 4, characterized in that: An arc-shaped groove (318) with an arc matching that of the engagement gear (317) is formed inside one end of the limit block (36). Edges of the limit block (36) and the partition plate (313) are spliced with each other.

9. The bidirectional synchronous telescopic electric cylinder for electric vehicles according to claim 6, characterized in that: The engagement gear (317) is located inside the arc-shaped groove (318). One ends of the first toothed rod (311) and the second toothed rod (312) are fixedly connected to the groove wall of the arc-shaped groove (318).

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