A side-mounted double-spring power steering assembly

Abstract

This utility model relates to the field of agricultural machinery, specifically to a side-mounted double-spring power-assist assembly, including a vertical plate, a pedal, a first power-assist mechanism, and a second power-assist mechanism. The vertical plate has a rotating shaft on which a sleeve is rotatably mounted. The second power-assist mechanism includes a power-assist plate, a swing arm, a power-assist wheel, and a second tension spring. The power-assist plate is connected to the sleeve, and the pedal is connected to the power-assist plate. When the pedal is pressed, the sleeve rotates via the power-assist plate. The swing arm is mounted on the vertical plate and has a power-assist wheel. The second tension spring connects the swing arm and the vertical plate, causing the power-assist wheel to engage with the mating end face on the power-assist plate. The first power-assist mechanism includes a power-assist disc, a power-assist arm, a connecting arm, and a first tension spring. The power-assist disc is connected to the sleeve, and the power-assist arm is rotatably mounted on the vertical plate and engages with the power-assist disc. The first tension spring connects to the power-assist arm and is connected to the power-assist plate via the connecting arm, providing power assistance when the sleeve rotates.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, specifically to a side-mounted double-spring power assist assembly. Background Technology

[0002] Agricultural machinery, especially high-horsepower tractors, requires frequent gear shifting and clutch pedal operation. High-horsepower tractors have high power, and the driving force required to depress the clutch is also large. The resistance that the driver needs to overcome when depressing the clutch is also large, which can easily lead to driver fatigue and reduced work efficiency.

[0003] The Chinese utility model patent with application number 202422234107.4 is a clutch pedal assembly with power assist function developed by the applicant. It has the advantages of simple structure, high power assist efficiency, low cost and easy maintenance. After actual use and testing, the applicant found that there is room for further improvement in terms of reducing structural complexity and improving power assist efficiency. Moreover, due to the different models and manufacturers of agricultural machinery, especially tractors, the cab layout is also very different. The form of the power assist bracket and the installation form of each component of the original product result in a larger space required for product installation and relatively greater restrictions on the use of the product. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a side-mounted double-spring power assist assembly, which reduces the structural complexity of the product, can be adapted to the cabs of various agricultural machines, and has higher power assist efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a side-mounted double-spring power-assisted assembly, including a vertical plate, a pedal, a first power-assisted mechanism, and a second power-assisted mechanism. A rotating shaft is vertically mounted on the vertical plate, and a sleeve is provided on the rotating shaft and rotates relative to the rotating shaft. The second power-assisted mechanism includes a power-assisted mating plate, a swing arm, a power-assisted wheel, and a second tension spring. The power-assisted mating plate is connected to the sleeve and is provided with a mating end face, including a free-stroke end face and a power-assisted end face. The free-stroke end face and the power-assisted end face are distributed circumferentially around the rotating shaft and are connected to each other. The swing arm is mounted on the vertical plate and rotates relative to the vertical plate. One swing end of the swing arm is provided with a power-assisted wheel, and the other swing end is connected to the vertical plate through the second tension spring. The second tension spring pulls the swing arm to make the power-assisted wheel rotate. The first assist mechanism includes an assist plate, an assist arm, a connecting arm, a first tension spring, and a home position baffle. The connecting arm is connected to the assist plate, and the assist plate is connected to the sleeve. The assist plate is provided with a first transmission tooth and a home position baffle. The assist arm is mounted on the vertical plate and rotates relative to the vertical plate. One swing end of the assist arm is provided with a second transmission tooth, which is in transmission engagement with the first transmission tooth. The other swing end of the assist arm is connected to the first tension spring, which is also connected to the assist arm and generates a torque to drive the sleeve to rotate. The home position baffle is mounted on the vertical plate, and the pedal is connected to the assist plate. When the pedal is in the home position, the home position baffle engages with the home position baffle.

[0006] As an optional technical solution of this utility model, the line connecting the transmission point of the two transmission teeth and the rotation axis of the assist arm is the rotation center line. When the connection point of the assist arm and the first tension spring are located on both sides of the rotation center line, the torque generated by the first tension spring is in the opposite direction. When the connection point of the assist arm and the first tension spring is on the rotation center line, the assist wheel abuts against the contact point of the idle stroke end face and the assist end face.

[0007] As an optional technical solution of this utility model, the idle stroke end face is an arc surface coaxial with the rotating shaft. The assist arm is pulled by the second tension spring and generates a force pointing towards the rotating shaft on the assist wheel that abuts against the idle stroke end face. The assist end face is an arc surface. The assist arm is pulled by the second tension spring and generates a force deviating from the rotating shaft on the assist wheel that abuts against the assist end face. The assist wheel abuts against the assist end face and generates a torque on the sleeve. The direction of this torque is consistent with the direction of the torque generated when the connection point between the assist arm and the first tension spring is on the side of the rotation center line closer to the pedal.

[0008] As an optional technical solution of this utility model, the pedal is connected to the power assist plate and a limiting part is formed on the power assist plate. The idle stroke end face, the power assist end face and the limiting part are distributed in sequence in the circumferential direction with the rotating shaft as the center.

[0009] As an optional technical solution of this utility model, a connecting plate is provided on the upright plate, and a second tension spring connects the assist arm and the connecting plate, and the tension of the second tension spring is adjustable.

[0010] As an optional technical solution of this utility model, a connecting hole is provided on the connecting plate, and a screw is provided in the connecting hole. The screw is connected to the second tension spring, and nuts are provided on both sides of the connecting plate on the screw. The screw can move relative to the connecting plate and adjust the tension of the second tension spring.

[0011] Compared with the prior art, the advantages of this utility model are as follows: 1. The power assist assembly of this utility model has a simpler and more reasonable structure. In addition to assisting in pedaling, the first power assist mechanism can also assist in pedal reset when the driver does not press the pedal; 2. The cooperation between the first power assist mechanism and the second power assist mechanism provides a better assist effect and helps maintain the overall structural stability of the device; 3. All components are installed and cooperated based on the upright plate. The structure of the upright plate is simple and can be adapted to various cab layouts, making it suitable for various models and manufacturers of tractors and other agricultural machinery. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of the powertrain assembly; Figure 2 A schematic diagram of the second support mechanism; Figure 3 A diagram illustrating the primary support organization; In the diagram: 1. Vertical plate, 2. Pedal, 3. Sleeve, 4. Assist plate, 5. Swing arm, 6. Assist wheel, 7. Second tension spring, 8. Mating end face, 9. Assist disc, 10. Assist arm, 11. Connecting arm, 12. First tension spring, 13. In-situ baffle, 14. In-situ stop, 15. Connecting plate. Detailed Implementation

[0014] 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. Example

[0015] like Figures 1-3 As shown, a side-mounted double-spring power assist assembly includes a vertical plate 1, a pedal 2, a first power assist mechanism, and a second power assist mechanism. A rotating shaft is vertically mounted on the vertical plate 1, and a sleeve 3 is provided on the rotating shaft. The sleeve 3 is connected to the rotating shaft through a bearing structure and can rotate relative to the rotating shaft. The vertical plate 1 is also provided with mounting holes, and the vertical plate 1 can be vertically mounted and connected to the cab of the agricultural machinery through bolts or other connecting parts.

[0016] Please see Figure 1 and Figure 2 The second assist mechanism includes an assist mating plate 4, a swing arm 5, an assist wheel 6, and a second tension spring 7. The assist mating plate 4 is connected to the sleeve 3. The assist mating plate 4 is provided with a mating end face 8, which includes a no-travel end face and an assist end face. The no-travel end face is an arc surface coaxial with the rotating shaft. The assist end face is also an arc surface. The axis of the assist end face does not coincide with the axis of the rotating shaft. The no-travel end face and the assist end face are distributed sequentially around the rotating shaft in a circumferential direction, and the no-travel end face and the assist end face are connected.

[0017] A mounting shaft is vertically mounted on the upright plate 1, with a pin at one end. A pin hole is provided on the swing arm 5, through which the pin passes, allowing the swing arm 5 to rotate relative to the pin. The two opposite ends of the swing arm 5 are swing ends, located on opposite sides of the pin hole. An assist wheel 6 is mounted on one swing end of the swing arm 5. The assist wheel 6 is connected to the swing arm 5 via a bearing structure or its own structure, allowing it to rotate relative to the swing arm 5 around its own axis. The axis of rotation of the assist wheel 6 is parallel to the rotating shaft. Along the axial direction of the mounting shaft, the assist wheel 6 corresponds to the position of the assist mating plate 4. The other swing end of the swing arm 5 is connected to the upright plate 1 via a second tension spring 7. Under the action of the second tension spring 7, the assist wheel 6 abuts against the mating end face 8. As the sleeve 3 rotates, the mating position of the assist mating plate 4 with the mating end face 8 continuously changes, contributing to the rotation of the assist mating plate 4.

[0018] When the idle stroke end face is an arc surface coaxial with the rotating shaft, and the second tension spring 7 pulls the swing arm 5 to make the assist wheel 6 abut against the idle stroke end face, the force exerted on the assist mating plate 4 is directed towards the axis of the rotating shaft, and the second assist mechanism does not generate a torque to drive the sleeve 3 to rotate. When the assist end face is an arc surface whose axis does not coincide with the axis of the rotating shaft, and the second tension spring 7 pulls the swing arm 5 to make the assist wheel 6 abut against the assist end face, the force exerted on the assist mating plate 4 is deviated from the axis of the rotating shaft, and the second assist mechanism generates a torque to drive the sleeve 3 to rotate, thus achieving the effect of assisting the rotation of the sleeve 3.

[0019] The pedal 2 is connected to the power assist plate 4. In actual use, when the driver presses the pedal 2 during the idle travel phase, the sleeve 3 rotates with the pedal 2 and the idle travel end face abuts against the power assist wheel 6. When the driver continues to press the pedal 2 and ends the idle travel phase, the sleeve 3 rotates with the pedal 2 and the power assist end face abuts against the power assist wheel 6. At this time, the second power assist mechanism plays the role of assisting the sleeve 3 to rotate, helping the driver to press the pedal 2.

[0020] The pedal 2 is connected to the power assist plate 4, and the connection point is at the end of the mating end face 8. The connection part of the pedal 2 acts as a limiting part on the power assist plate 4. The idle end face, the power assist end face, and the limiting part are distributed in sequence in the circumferential direction with the rotation axis as the center. When the driver presses the pedal 2, the sleeve 3 and the power assist plate 4 rotate, causing the driving wheel to move towards the limiting part in the circumferential direction relative to the power assist plate 4. When the driver presses the pedal 2 to the limit position, the power assist wheel 6 abuts against the limiting part, preventing the sleeve 3 from continuing to rotate.

[0021] As an optional implementation, a connecting plate 15 is provided on the upright plate 1. The connecting plate 15 is a component on the upright plate 1 suitable for connection with the second tension spring 7. The second tension spring 7 is connected to the connecting plate 15, and the tension of the second tension spring 7 is adjustable. As a specific example, the connecting plate 15 is provided with a connecting hole, and a screw is inserted into the connecting hole. The screw is connected to the second tension spring 7, and nuts are provided on both sides of the screw on the connecting plate 15. The screw moves along the connecting hole relative to the connecting plate 15, which can adjust the tension of the second tension spring 7. When the second tension spring 7 is adjusted to a suitable tension, rotating the two nuts causes both nuts to abut against the connecting plate 15, thereby fastening the screw relative to the connecting plate 15.

[0022] Please see Figure 1 and Figure 3The first assist mechanism includes an assist disk 9, an assist arm 10, a first tension spring 12, and a home position baffle 13. The assist disk 9 is connected to the sleeve 3. The assist disk 9 is provided with a first transmission gear and a home position baffle 14. The first transmission gear includes a plurality of teeth distributed around the axis of rotation. The assist arm 10 is mounted on the upright plate 1 and is connected to the upright plate 1 through a bearing structure or other rotatable mounting components, so that the assist arm 10 can rotate relative to the upright plate 1. The two swing ends of the assist arm 10 are located on opposite sides of the rotation center. One swing end is provided with a second transmission gear, which includes a plurality of teeth distributed around the rotation center of the assist arm 10. In the axial direction of the rotating shaft, the mounting position of the assist arm 10 corresponds to the position of the assist disk 9. The second transmission gear and the first transmission gear are in transmission engagement. The other swing end of the assist arm 10 is connected to the first tension spring 12, which is also connected to a connecting arm 11. The connecting arm 11 is connected to the assist engagement plate 4. In some embodiments, in order to improve the assist effect, the connecting arm 11 is an arc-shaped arm, and the connection part between the connecting arm 11 and the assist plate 4 and the connection part between the connecting arm 11 and the first tension spring 12 are respectively on opposite sides of the rotating shaft.

[0023] For ease of description, the line connecting the transmission engagement point of the first and second transmission teeth to the rotation axis of the assist arm 10 is called the rotation center line. When the assist wheel 6 is in contact with the contact point of the idle end face and the assist end face, the connection point of the assist arm 10 and the first tension spring 12 is on the rotation center line. When the connection point of the assist arm 10 and the first tension spring 12 is on the side of the rotation center line, due to the deflection of the assist arm 10 and its further deflection under the tension of the first tension spring 12, the effect of the first tension spring 12 is transmitted to the sleeve 3 through the two transmission teeth and the assist disc 9, generating a torque that drives the sleeve 3 to rotate. The direction of the torque of the first assist mechanism on the sleeve 3 when the connection point of the assist arm 10 and the first tension spring 12 is on one side of the rotation center line is opposite to the direction of the torque of the first assist mechanism on the sleeve 3 when the connection point of the assist arm 10 and the first tension spring 12 is on the other side of the rotation center line.

[0024] The in-situ baffle 13 is mounted on the upright plate 1. When the driver presses the pedal 2, the sleeve 3 rotates and drives the in-situ stop head 14 to rotate via the power assist disc 9. When the pedal 2 returns to its original position, the in-situ stop head 14 abuts against the in-situ baffle 13. The sleeve 3 is also provided with a clutch connection part for connecting with the clutch of the agricultural machinery.

[0025] Please see Figures 1-3 In actual use, when the upright plate 1 is installed in the driver's cab and the pedal 2 is in its original position, the power assist wheel 6 abuts against the idle travel end face, and the second power assist mechanism does not provide assistance. The connection point between the power assist arm 10 and the first tension spring 12 is on the side of the rotation center line closer to the pedal 2. Under the action of the first power assist mechanism, the sleeve 3 is subjected to a torque in the reset direction, which is... Figure 3In the counterclockwise direction shown, the original position stop 14 and the original position baffle 13 are in contact; When the driver presses pedal 2, sleeve 3 rotates in the opposite direction to the reset direction. Figure 3 In the clockwise direction from the shown perspective, when the connection point between the assist arm 10 and the first tension spring 12 is on the rotation center line, the assist wheel 6 engages with the contact point between the idle travel end face and the assist end face, and neither the first nor the second assist mechanism provides assistance. When the driver continues to depress the pedal 2, the assist wheel 6 engages with the assist end face, and the second assist mechanism provides assistance, generating a torque that drives the sleeve 3 to continue rotating. When the connection point between the assist arm 10 and the first tension spring 12 is on the side of the rotation center line away from the pedal 2, the first assist mechanism provides assistance, generating a torque that drives the sleeve 3 to continue rotating. The combined assistance effects of the first and second assist mechanisms reduce the resistance when the driver depresses the pedal 2. When the driver depresses the pedal 2 to its limit position, the assist wheel 6 engages with the limiting part, preventing the sleeve 3 from continuing to rotate.

[0026] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A side-mounted double-spring power assist assembly, characterized in that: The system includes a vertical plate (1), a pedal (2), a first assist mechanism, and a second assist mechanism. A rotating shaft is vertically mounted on the vertical plate (1), and a sleeve (3) is provided on the rotating shaft and rotates relative to the rotating shaft. The second assist mechanism includes an assist mating plate (4), a swing arm (5), an assist wheel (6), and a second tension spring (7). The assist mating plate (4) is connected to the sleeve (3), and a mating end face (8) is provided on the assist mating plate (4). The mating end face (8) includes a free stroke end face and an assist end face. The free stroke end face and the assist end face are distributed circumferentially around the rotating shaft and are connected to each other. The swing arm (5) is set on the vertical plate (1) and rotates relative to the vertical plate (1). One swing end of the swing arm (5) is provided with an assist wheel (6), and the other swing end is connected to the vertical plate (1) through the second tension spring (7). The second tension spring (7) pulls the swing arm (5) to make the assist wheel (6) abut against the mating end face (8), and the assist wheel (6) generates a drive when it abuts against the assist end face. The torque of the sleeve (3) rotation; the first assist mechanism includes an assist disk (9), an assist arm (10), a connecting arm (11), a first tension spring (12) and a home position baffle (13). The connecting arm (11) is connected to the assist mating plate (4), the assist disk (9) is connected to the sleeve (3), the assist disk (9) is provided with a first transmission gear and a home position baffle (14), the assist arm (10) is set on the vertical plate (1) and rotates relative to the vertical plate (1), one of the assist arm (10) The swing end is provided with a second transmission tooth, which is in transmission engagement with the first transmission tooth. The other swing end of the assist arm (10) is connected to the first tension spring (12). The first tension spring (12) is also connected to the assist arm (10) and generates a torque to drive the sleeve (3) to rotate. The in-situ baffle (13) is set on the upright plate (1). The pedal (2) is connected to the assist engagement plate (4), and when the pedal (2) is in the in-situ position, the in-situ stop (14) abuts against the in-situ baffle (13).

2. The side-mounted double-spring booster assembly according to claim 1, characterized in that: The line connecting the transmission point of the two transmission teeth and the rotation axis of the assist arm (10) is the rotation center line. When the connection point of the assist arm (10) and the first tension spring (12) is located on both sides of the rotation center line, the torque generated by the first tension spring (12) is in the opposite direction. When the connection point of the assist arm (10) and the first tension spring (12) is on the rotation center line, the assist wheel (6) abuts against the contact point of the idle stroke end face and the assist end face.

3. The side-mounted double-spring booster assembly according to claim 2, characterized in that: The idle stroke end face is an arc surface coaxial with the rotating shaft. The assist arm (10) is pulled by the second tension spring (7) and generates a force pointing towards the rotating shaft on the assist wheel (6) which is in contact with the idle stroke end face. The assist end face is an arc surface. The assist arm (10) is pulled by the second tension spring (7) and generates a force deviating from the rotating shaft on the assist wheel (6) which is in contact with the assist end face. The assist wheel (6) is in contact with the assist end face and generates a torque on the sleeve (3). The direction of this torque is consistent with the torque generated when the connection point between the assist arm (10) and the first tension spring (12) is on the side of the rotation center line closer to the pedal (2).

4. The side-mounted double-spring booster assembly according to claim 3, characterized in that: The pedal (2) is connected to the power assist plate (4) and a limiting part is formed on the power assist plate (4). The idle stroke end face, the power assist end face and the limiting part are distributed in sequence in the circumferential direction centered on the rotating shaft.

5. A side-mounted double-spring booster assembly according to claim 3, characterized in that: A connecting plate (15) is provided on the upright plate (1), and a second tension spring (7) connects the assist arm (10) and the connecting plate (15), and the tension of the second tension spring (7) is adjustable.

6. A side-mounted double-spring booster assembly according to claim 5, characterized in that: A connecting hole is provided on the connecting plate (15), and a screw is provided in the connecting hole. The screw is connected to the second tension spring (7), and nuts are provided on both sides of the connecting plate (15) on the screw. The screw can move relative to the connecting plate (15) and adjust the tension of the second tension spring (7).

Images