An electric cylinder adjustment structure for vehicle support legs

Abstract

This utility model discloses an electric cylinder adjustment structure for a vehicle support leg, including a servo motor. One end of the servo motor is equipped with a drive box, and one end of the drive box is fitted with a multi-stage gearbox. The drive box contains a gear set, and a lead screw is installed inside the power cylinder. A large bevel gear is sleeved on one end of the lead screw, and one end of the gear set meshes with the large bevel gear. The large bevel gear meshes with a small bevel gear. This invention, through the cooperation of the servo motor, drive box, multi-stage gearbox, and gear set, achieves multi-stage power transmission and speed change, enabling precise adjustment of the electric cylinder's output speed and torque according to the actual leveling requirements of the vehicle, thus improving leveling accuracy. This invention, through the design of an anti-rotation baffle, anti-rotation block, and anti-rotation strip, and with the lead screw nut using a cylindrical design and fixed to the anti-rotation baffle, effectively prevents the lead screw nut from rotating during operation.

Description

Technical Field

[0001] This utility model relates to the field of vehicle equipment technology, specifically an electric cylinder adjustment structure for vehicle support legs. Background Technology

[0002] In vehicle use, especially for special vehicles that need to operate or park on uneven ground, such as engineering vehicles and RVs, leveling legs play a crucial role. Traditional leveling devices suffer from problems such as complex structure, low adjustment precision, and poor stability, making it difficult to meet the leveling requirements of vehicles under different working conditions. Electric cylinders, as a new type of drive device, have advantages such as fast response speed, high control precision, and stable output force. Applying them to vehicle leveling legs can effectively solve the shortcomings of traditional leveling devices. However, there is currently a lack of design for an electric cylinder adjustment structure for vehicle support legs. Therefore, those skilled in the art provide an electric cylinder adjustment structure for vehicle support legs to solve the problems mentioned in the background art. Summary of the Invention

[0003] The purpose of this invention is to provide an electric cylinder adjustment structure for vehicle support legs to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An electric cylinder adjustment structure for a vehicle support leg includes a servo motor. One end of the servo motor has a drive box. One end of the drive box has a multi-stage gearbox, and the other end of the multi-stage gearbox has a power cylinder. One end of the power cylinder has a floating flange. The drive box contains a gear set, and the power cylinder contains a lead screw. One end of the lead screw is externally fitted with a large bevel gear. One end of the gear set meshes with the large bevel gear, which meshes with a small bevel gear. One end of the small bevel gear is fixedly connected to a gear one. The upper end of gear one has a first interface, and one end of gear one meshes with a gear two. The upper end of gear two has a second interface. A lead screw nut is mounted on the lead screw, and one end of the lead screw nut is fixedly connected to an anti-rotation baffle. An anti-rotation block is provided on the outer side of the anti-rotation baffle. The power shaft is located outside the lead screw.

[0005] As a further embodiment of this utility model: the power shaft is located outside the lead screw, and a supporting spherical surface is provided on the top of the power shaft, and a floating flange is installed on one side of the supporting spherical surface.

[0006] As a further improvement of this utility model: an anti-rotation strip is installed on one side of the anti-rotation block on the inner wall of the power cylinder.

[0007] As a further embodiment of this utility model: the anti-rotation baffle includes an anti-rotation area and a positioning area, and two of each are provided, which are arranged opposite to each other. The lead screw nut is provided with a groove that matches the anti-rotation area and the positioning area.

[0008] As a further improvement of this utility model: the anti-rotation baffle is provided with a slot for installing the anti-rotation block on its exterior, and the upper end of the anti-rotation baffle is provided with a slot for fixing the power shaft.

[0009] As a further improvement of this utility model: a thrust bearing is provided at the contact point between the lead screw and the drive box, and a cylindrical tube is provided on the rear side of the thrust bearing, with the cylindrical tube sleeved on the outside of the lead screw.

[0010] As a further embodiment of this utility model: a radial support bearing is provided on the outer surface of the cylindrical tube, and one end of the small bevel gear is inserted into the interior of the radial support bearing.

[0011] As a further improvement of this utility model: one end of the lead screw is inserted into the internal connection of the gear set, and the gear set drives the lead screw to rotate. A tension bearing is provided on one side of the large bevel gear.

[0012] As a further improvement of this utility model, the anti-rotation strip is fixedly installed on the inner wall of the power cylinder by bolts.

[0013] As a further improvement of this utility model: a groove is provided on one side wall of the anti-rotation strip, and the anti-rotation block slides up and down inside the groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This invention achieves multi-stage power transmission and speed change through the cooperation of components such as servo motor, drive box, multi-stage gearbox and gear set. It can accurately adjust the output speed and torque of electric cylinder according to the actual needs of vehicle leveling, thereby improving leveling accuracy.

[0015] 2. This invention, through the design of anti-rotation baffle, anti-rotation block and anti-rotation strip, and the cylindrical design of the lead screw nut, which is fixed to the anti-rotation baffle at the end through four milled flat positions, effectively prevents the lead screw nut from rotating during the movement, ensures the accuracy and stability of the linear motion of the electric cylinder, improves the working reliability of the electric cylinder, and saves more material than the lead screw of the traditional flange.

[0016] 3. Since the bottom surface that needs to be leveled is uneven and the angle is random, the front flange of the electric cylinder adopts a floating flange design. The floating flange is directly connected to the power shaft through the support spherical surface, eliminating the axial transition structure of the traditional flange and shortening the overall length. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an electric cylinder adjustment structure for a vehicle support leg. Figure 2 This is a schematic diagram of the mounting structure of the small bevel gear and the large bevel gear in an electric cylinder adjustment structure for a vehicle support leg. Figure 3 This is a schematic diagram of a vertical cross-section of an electric cylinder adjustment structure for vehicle support legs. Figure 4 This is a schematic diagram of the installation structure of the anti-rotation bar in an electric cylinder adjustment structure for a vehicle support leg; Figure 5 This is a schematic diagram of the installation structure of the anti-rotation baffle in an electric cylinder adjustment structure for vehicle support legs.

[0018] In the diagram: 1. Servo motor; 2. Drive box; 21. Small bevel gear; 22. Large bevel gear; 3. Multi-stage gearbox; 31. Second interface; 32. Gear two; 33. First interface; 34. Gear one; 4. Power cylinder; 5. Floating flange; 6. Lead screw; 7. Radial support bearing; 8. Tension bearing; 9. Thrust bearing; 10. Gear set; 11. Power shaft; 12. Anti-rotation block; 13. Anti-rotation bar; 14. Anti-rotation baffle; 141. Anti-rotation area; 142. Positioning area; 15. Lead screw nut; 16. Support spherical surface. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-5 In this embodiment of the utility model, a servo motor 1 is included. The servo motor 1 serves as a power source and can provide stable and adjustable power output. A drive box 2 is provided at one end of the servo motor 1. The drive box 2 is used to perform preliminary processing and transmission of the power output by the servo motor 1. A multi-stage gearbox 3 is installed at one end of the drive box 2. The multi-stage gearbox 3 can realize multi-stage speed change to meet the requirements of the electric cylinder output speed and torque under different working conditions. A power cylinder 4 is installed at the other end of the multi-stage gearbox 3. The power cylinder 4 is a key component for the electric cylinder to achieve linear motion. A floating flange 5 is provided at one end of the power cylinder 4. The floating flange 5 facilitates the connection of the electric cylinder with the vehicle leveling leg or other components, and can adapt to certain installation errors and angle changes. The drive box 2 is equipped with a gear set 10, which transmits and converts power within the drive box 2. The power cylinder 4 is equipped with a lead screw 6, which is the core component that converts rotary motion into linear motion. A large bevel gear 22 is externally sleeved at one end of the lead screw 6. One end of the gear set 10 meshes with the large bevel gear 22, transmitting power from the drive box 2 to the lead screw 6 through the meshing of the gear set 10 and the large bevel gear 22. The large bevel gear 22 meshes with a small bevel gear 21, which further changes the direction and speed of power transmission. A gear 34 is fixedly connected to one end of the small bevel gear 21. A first interface 33 is installed on the upper end of the gear 34, which can be used to connect external control equipment or other transmission components. A gear 32 is meshed with one end of the gear 34, and a second interface 31 is installed on the upper end of the gear 32, which can also be used to connect to external equipment and transmit power.

[0021] The gearbox has two input interfaces. The first interface directly drives the small bevel gear 21, and the second interface 31 drives two-stage or multi-stage gears. When driving the first interface 33, the electric cylinder has a faster extension and retraction speed. When driving the second interface 31, the extension and retraction speed of the electric cylinder is slower, but the driving force is smaller. When retracting or extending at high speed under no-load conditions, the first interface 33 can be used. When under load, the second interface 31 can be used to reduce the driving force and increase the adjustment accuracy. A lead screw nut 15 is installed on the lead screw 6. The lead screw nut 15 cooperates with the lead screw 6. When the lead screw 6 rotates, the lead screw nut 15 moves linearly along the axis of the lead screw 6. An anti-rotation baffle 14 is fixedly connected to one end of the lead screw nut 15. The anti-rotation baffle 14 is used to prevent the lead screw nut 15 from rotating during the movement and to ensure the accuracy of its linear movement. An anti-rotation block 12 is provided on the outer side of the anti-rotation baffle 14. An anti-rotation strip 13 is installed on one side of the anti-rotation block 12 on the inner wall of the power cylinder 4. The anti-rotation strip 13 is fixedly installed on the inner wall of the power cylinder 4 by bolts. A groove is opened on the side wall of one end of the anti-rotation strip 13. The anti-rotation block 12 slides up and down inside the groove. The cooperation between the anti-rotation block 12 and the anti-rotation strip 13 further enhances the anti-rotation effect. The anti-rotation baffle 14 includes an anti-rotation area 141 and a positioning area 142. Two anti-rotation areas 141 and two positioning areas 142 are provided, arranged opposite each other. The lead screw nut 15 has grooves that match the anti-rotation areas 141 and 142. This structural design can more effectively restrict the rotation of the lead screw nut 15 and achieve precise positioning. The exterior of the anti-rotation baffle 14 has a slot for installing the anti-rotation block 12, and the upper end of the anti-rotation baffle 14 has a slot for fixing the power shaft 11. The power shaft 11 is located outside the lead screw 6, and a supporting spherical surface 16 is provided on the top of the power shaft 11. A floating flange 5 is installed on one side of the supporting spherical surface 16. Through the cooperation of the power shaft 11 with the anti-rotation baffle 14 and the connection between the supporting spherical surface 16 and the floating flange 5, stable support and transmission of the output force of the electric cylinder are achieved. A thrust bearing 9 is installed at the contact point between the lead screw 6 and the drive housing 2. The thrust bearing 9 can withstand the axial force of the lead screw 6, ensuring its stable operation. A cylindrical sleeve is installed behind the thrust bearing 9, which is fitted over the lead screw 6. A radial support bearing 7 is installed on the outside of the cylindrical sleeve. One end of the small bevel gear 21 is inserted into the radial support bearing 7, which supports the small bevel gear 21 and reduces its radial runout during rotation. One end of the lead screw 6 is inserted into the gear set 10 for internal connection, and the gear set 10 drives the lead screw 6 to rotate. A tension bearing 8 is installed on one side of the large bevel gear 22, which can withstand the tension generated by the large bevel gear 22 during transmission, improving the stability of the transmission system.

[0022] The working principle of this invention is as follows: Servo motor 1 serves as the core power source, outputting stable and adjustable rotational power. This power is first transmitted to drive box 2, and the processed power from drive box 2 is transmitted to multi-stage gearbox 3. Multi-stage gearbox 3 utilizes internal gear combinations of different specifications to achieve multi-stage speed change. The output speed and torque can be flexibly adjusted according to the actual working conditions of vehicle leveling, ensuring stable operation of the electric cylinder under different loads and precision requirements. Afterward, power is transmitted from multi-stage gearbox 3 to power cylinder 4. The lead screw 6 inside power cylinder 4 is a key component for motion conversion. One end of the lead screw 6 is sleeved with a large bevel gear 22, which meshes with the gear set 10 inside drive box 2, receiving the transmitted rotational power. Simultaneously, the large bevel gear 22 meshes with the small bevel gear 21. The small bevel gear 21, through gear one 34, gear two 32, and corresponding first interface 33 and second interface 31, can connect to external control equipment or transmission components. When the lead screw 6 receives rotational power, the lead screw nut 15, due to its threaded structure, converts the rotational motion of the lead screw 6 into linear motion along the lead screw axis, thereby realizing the extension and retraction of the electric cylinder and driving the vehicle leveling leg to rise and fall. To ensure the accuracy of the linear motion of the lead screw nut 15, an anti-rotation and positioning structure is set. The anti-rotation baffle 14 fixed at one end of the lead screw nut 15 has an anti-rotation area 141 and a positioning area 142 that cooperate with the groove on the lead screw nut 15 to restrict the rotational freedom of the lead screw nut 15. At the same time, the anti-rotation block 12 on the outer side of the anti-rotation baffle 14 cooperates with the anti-rotation strip 13 on the inner side wall of the power cylinder 4. The groove of the anti-rotation strip 13 provides guidance for the anti-rotation block 12, further preventing the lead screw nut 15 from rotating and ensuring the accuracy of linear motion. In addition, the anti-rotation baffle 14 is connected to the power shaft 11 through a slot. The support ball 16 on the top of the power shaft 11 and the floating flange 5 cooperate to achieve stable support and transmission of the output force of the electric cylinder, ensuring the stability of the leveling process.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric cylinder adjustment structure for a vehicle support leg, comprising a servo motor (1), characterized in that, One end of the servo motor (1) is provided with a drive box (2), one end of the drive box (2) is equipped with a multi-stage gearbox (3), and the other end of the multi-stage gearbox (3) is equipped with a power cylinder (4). One end of the power cylinder (4) is provided with a floating flange (5). The drive box (2) is provided with a gear set (10), and the power cylinder (4) is equipped with a lead screw (6). One end of the lead screw (6) is externally sleeved with a large bevel gear (22). One end of the gear set (10) is meshed with the large bevel gear (22), and the large bevel gear (22) is meshed with a small bevel gear (21). One end of the small bevel gear (21) is fixedly connected with a tooth. Gear 1 (34), the upper end of the gear 1 (34) is equipped with a first interface (33), and one end of the gear 1 (34) is meshed with a gear 2 (32), and the upper end of the gear 2 (32) is equipped with a second interface (31). A screw nut (15) is installed on the screw (6), and one end of the screw nut (15) is fixedly connected to an anti-rotation baffle (14). An anti-rotation block (12) is provided on the outside of the anti-rotation baffle (14), and a slot for installing the anti-rotation block (12) is provided on the outside of the anti-rotation baffle (14). A slot for fixing the power shaft (11) is provided on the upper end of the anti-rotation baffle (14), and the power shaft (11) is located on the outside of the screw (6).

2. The electric cylinder adjustment structure for a vehicle support leg according to claim 1, characterized in that, The top of the driven shaft (11) is provided with a support spherical surface (16), and a floating flange (5) is installed on one side of the support spherical surface (16).

3. The electric cylinder adjustment structure for a vehicle support leg according to claim 1, characterized in that, One side of the anti-rotation block (12) is equipped with an anti-rotation strip (13) on the inner wall of the power cylinder (4).

4. The electric cylinder adjustment structure for a vehicle support leg according to claim 1, characterized in that, The anti-rotation baffle (14) includes an anti-rotation area (141) and a positioning area (142). There are two of each of the anti-rotation area (141) and the positioning area (142), which are arranged opposite to each other. The lead screw nut (15) is provided with a groove that matches the anti-rotation area (141) and the positioning area (142).

5. The electric cylinder adjustment structure for a vehicle support leg according to claim 1, characterized in that, A thrust bearing (9) is provided at the contact point between the lead screw (6) and the drive box (2). A cylindrical tube is provided on the rear side of the thrust bearing (9), and the cylindrical tube is sleeved on the outside of the lead screw (6).

6. The electric cylinder adjustment structure for a vehicle support leg according to claim 5, characterized in that, A radial support bearing (7) is provided on the outside of the cylindrical tube, and one end of the small bevel gear (21) is inserted into the interior of the radial support bearing (7).

7. The electric cylinder adjustment structure for a vehicle support leg according to claim 1, characterized in that, One end of the lead screw (6) is inserted into the internal connection of the gear set (10), and the lead screw (6) is driven to rotate by the gear set (10). A tension bearing (8) is provided on one side of the large bevel gear (22).

8. The electric cylinder adjustment structure for a vehicle support leg according to claim 3, characterized in that, The anti-rotation strip (13) is fixedly installed on the inner wall of the power cylinder (4) by bolts.

9. The electric cylinder adjustment structure for a vehicle support leg according to claim 3, characterized in that, The anti-rotation strip (13) has a groove on one side wall, and the anti-rotation block (12) slides up and down inside the groove.

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