An adjustable suspension mount

Abstract

The utility model relates to the technical field of suspension frame, disclose a kind of adjustable suspension frame, including base plate, the side wall of base plate is fixedly installed with a pair of riser, a pair of riser is connected and is installed with suspension mechanism, the bottom of base plate is fixedly installed with worm reduction motor, worm reduction motor has two output ends, output end is through the riser of same side, the output end of reduction motor is all installed with the lever mechanism for the suspension mechanism of stirring;Suspension mechanism is installed with the adapter frame by adjusting mechanism on the side away from base plate.The utility model can realize the accurate height adjustment under the horizontal state of agricultural equipment by the parallelogram transmission structure of suspension mechanism, and adjusting mechanism supports the angle fine adjustment of adapter frame, and the installation demand of adapting different equipment;Its transmission module and power module separate design, when equipment encounters reaction force, suspension mechanism can automatically separate from lever mechanism, avoid worm reduction motor and other structure damage;It improves the adaptability and work efficiency of agricultural equipment.

Description

Technical Field

[0001] This utility model relates to the field of suspension frame technology, specifically an adjustable suspension frame. Background Technology

[0002] Agricultural equipment without its own propulsion (such as seeders, mulching machines, and drip irrigation machines) needs to be connected to the connecting bar on the front or rear of a motor vehicle (such as a tractor) when in use. It moves with the motor vehicle to complete operations such as sowing, mulching, plowing, and drip irrigation.

[0003] Due to the differences in size and installation location between agricultural equipment, a suitable connecting frame is required for successful installation on the connecting bar.

[0004] In existing technologies, a three-point connecting frame is often used, with two points of rotational support via a rotating frame, while a hydraulic cylinder is used to swing one end of the lever, thereby adjusting the position of the agricultural equipment at the other end of the lever, and thus adapting to the adjustment requirements of the installation height of the agricultural equipment.

[0005] However, the swing-type adjustment method has drawbacks: Firstly, the adjustment precision is limited. The linear motion of the hydraulic cylinder-driven lever is converted into an arc-shaped trajectory at the end of the agricultural equipment, resulting in non-linear errors in height adjustment, making it difficult to accurately adapt to the working height required by different equipment. Secondly, the reaction force on the agricultural equipment will be directly transmitted to the connecting frame, which can easily damage the structure of the connecting frame, especially the hydraulic cylinder.

[0006] Therefore, in order to solve the above problems, an adjustable suspension frame is proposed. Utility Model Content

[0007] The purpose of this invention is to provide an adjustable suspension frame that can adjust the height while keeping the agricultural equipment level, and the transmission module and power module are set separately, thereby solving the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an adjustable suspension frame, comprising a base plate, a pair of vertical plates fixedly installed on the side wall of the base plate, a suspension mechanism connected to the pair of vertical plates, a worm gear reducer motor fixedly installed at the bottom of the base plate, the worm gear reducer motor having two output ends, the output ends penetrating through the vertical plates on the same side, and each output end of the reducer motor being equipped with a lever mechanism for actuating the suspension mechanism; an adapter frame is installed on the side of the suspension mechanism away from the base plate via an adjustment mechanism.

[0009] Specifically, the suspension mechanism includes a connecting plate, connecting rods, and shafts. The top of the vertical plates is rotatably mounted with the same shaft, and the ends of the shafts are all fixedly mounted with connecting rods. The output ends of the worm gear reducers are all rotatably mounted with connecting rods. The ends of the connecting rods away from the vertical plates are rotatably assembled with the same connecting plate. The connecting rods are of equal length and arranged parallel to each other. The connecting plate is vertically arranged.

[0010] Furthermore, the connecting plate has connection holes for connecting external components.

[0011] Specifically, the lever mechanism includes a stop bar and a swing arm. One end of the swing arm is fixedly installed at the output end of the worm gear reducer motor, and the other end of the swing arm is fixedly installed with the same stop bar. The end of the stop bar extends out of the swing arm and is located below the lower connecting rod.

[0012] Furthermore, each end of the stop bar is rotatably mounted with a guide wheel for abutting against the lower connecting rod.

[0013] Furthermore, each end of the stop lever is equipped with one end of a first tension spring, the other end of the first tension spring is connected to the upper connecting rod, and the guide wheel is located between the first tension spring and the swing arm.

[0014] Specifically, the adjustment mechanism includes a first baffle, a second baffle, a set of positioning bolts, and a rotating joint. The adapter frame is connected to the left rotating seat in the rotating joint via a set of connecting bolts, and the right rotating seat in the rotating joint is connected to the connecting hole via a set of connecting bolts. The first baffle is fixedly installed on both the upper and lower sides of the left rotating seat, and the second baffle is fixedly installed on both the upper and lower sides of the right rotating seat. Each of the second baffles has a screw hole, and the screw hole is screwed with a set of positioning bolts for pressing against the first baffle on the same side.

[0015] Optionally, a rotating mechanism is installed at the lower end of the adapter frame away from the adjustment mechanism, and a roller is rotatably installed on the lower side of the rotating mechanism.

[0016] Specifically, the rotating mechanism includes a steel cable, a wheel frame, and a second tension spring. A pair of support seats are installed on the lower side of the adapter frame away from the adjustment mechanism via a set of connecting bolts. The same wheel frame is rotatably installed between the pair of support seats. One side of the wheel frame is rotatably assembled with a roller, and the other side of the wheel frame is connected to the adapter frame via the second tension spring. A steel cable is fixedly installed between the wheel frame and the adapter frame. The steel cable is located on the side of the support seat near the roller.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This adjustable suspension frame, through the parallelogram transmission structure of the suspension mechanism, enables precise height adjustment of agricultural equipment in a horizontal state, overcoming the nonlinear error problem of traditional swing-type adjustment. Furthermore, the adjustment mechanism supports fine-tuning of the frame angle to adapt to the installation requirements of different equipment, ensuring the installation compatibility of agricultural equipment.

[0018] Its transmission module and power module are designed separately. When the equipment encounters unconventional reaction forces (such as touching a hard object), the suspension mechanism can automatically disengage from the lever mechanism, avoiding damage to structures such as the worm gear reducer motor and significantly improving durability.

[0019] The overall design addresses the pain points of low adjustment precision and easy structural damage in existing technologies, improving the adaptability, operational precision and work efficiency of agricultural equipment. Attached Figure Description

[0020] Figure 1 This is a schematic front view of the structure of one application scenario in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the suspension mechanism of this utility model; Figure 3 This is an enlarged schematic diagram of the structure of the adjustment mechanism of this utility model; Figure 4 This is a schematic front view of the structure of Embodiment 2 of this utility model.

[0021] In the diagram: 1. Base plate, 2. First tension spring, 3. Suspension mechanism, 31. Connecting plate, 32. Connecting rod, 33. Shaft, 4. Adjustment mechanism, 41. First baffle, 42. Second baffle, 43. Positioning bolt group, 44. Rotating joint, 5. Roller, 6. Rotating mechanism, 61. Steel cable, 62. Wheel frame, 63. Second tension spring, 7. Adapter frame, 8. Connecting hole, 9. Lever mechanism, 91. Stop bar, 92. Swing arm, 10. Worm gear reducer motor, 11. Vertical plate, 12. Guide wheel. Detailed Implementation

[0022] 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.

[0023] Example 1: Please see Figure 1An adjustable suspension frame is provided, including a base plate 1. A pair of through holes are opened at the four corners of the base plate 1. Each pair of through holes is used to install a U-bolt assembly (mainly composed of a U-shaped screw and nuts screwed at both ends). When in use, the base plate 1 can be installed on the connecting bar on the front or rear side of the vehicle, depending on the usage requirements of the agricultural equipment.

[0024] A pair of vertical plates 11 are fixedly installed on the side wall of the base plate 1. The pair of vertical plates 11 are connected to the suspension mechanism 3. A worm gear reducer motor 10 is fixedly installed at the bottom of the base plate 1. The worm gear reducer motor 10 has two output ends, which pass through the vertical plates 11 on the same side. Each output end of the worm gear reducer motor 10 is equipped with a lever mechanism 9 for actuating the suspension mechanism 3. An adapter frame 7 is installed on the side of the suspension mechanism 3 away from the base plate 1 through the adjustment mechanism 4.

[0025] The adapter 7 is used to install agricultural equipment. The adapter 7 has elongated holes corresponding to the connection requirements of the agricultural equipment and is fixed by bolt groups to facilitate the replacement of agricultural equipment. The adjustment mechanism 4 is used to fine adjust the tilt angle of the adapter 7 to ensure that the agricultural equipment can be used after installation.

[0026] The worm gear reducer motor 10 is an existing device with a structure including a servo motor and a worm gear reducer. The worm gear reducer motor 10 is used to provide swing power to the lever mechanism 9, thereby adjusting the attitude of the suspension mechanism 3, so that the adjustment mechanism 4, the adapter frame 7 and the agricultural equipment installed on it can move up and down, and adjust the height of the working part of the agricultural equipment.

[0027] Please see Figure 2 The structure of suspension mechanism 3: The suspension mechanism 3 includes a connecting plate 31, a connecting rod 32, and a shaft 33. The top of the vertical plates 11 is rotatably mounted with the same shaft 33 via bearings. The ends of the shaft 33 are all fixedly mounted with connecting rods 32. The output ends of the worm gear reducer motor 10 are all rotatably mounted with connecting rods 32. The ends of the connecting rods 32 away from the vertical plates 11 are rotatably assembled with the same connecting plate 31. The connecting rods 32 are of equal length and are arranged parallel to each other. The connecting plate 31 is vertically arranged.

[0028] The output end of the worm gear reducer motor 10 is rotatably assembled with the connecting rod 32 via a bearing, so that the torque output by the output end is not transmitted to the connecting rod 32. The lower connecting rod 32 only swings around the output shaft. The vertical plate 11 has a shaft hole for the output end to pass through. The shaft hole is rotatably assembled with the output end via a bearing, which can provide rotational support for the two output ends and prevent the output ends from bending and deforming due to excessive force.

[0029] The connecting rods 32 at both ends of the shaft 33 and the two connecting rods 32 at the two output ends are used to vertically support the connecting plate 31. The four connecting rods 32 on the front side and the four connecting rods 32 on the rear side all form the same parallelogram transmission mechanism, which can always keep the connecting plate 31 in a vertical position to swing up and down.

[0030] The connecting plate 31 has multiple connecting holes 8 for connecting external components. These holes can be arranged in a rectangular array or can be opened according to the location requirements of the external agricultural equipment. The connecting holes 8 and the agricultural equipment are connected and assembled by a set of connecting bolts, which can adapt to the installation requirements of different agricultural equipment.

[0031] Structure of lever mechanism 9: The lever mechanism 9 includes a stop bar 91 and a swing arm 92. One end of the swing arm 92 is fixedly installed at the output end of the worm gear reducer motor 10. The other end of the swing arm 92 is fixedly installed with the same stop bar 91. The end of the stop bar 91 extends out of the swing arm 92 and is located below the lower connecting rod 32.

[0032] The output end of the worm gear reducer motor 10 and the swing arm 92 are connected by a pair of keys to ensure the stability of torque transmission. Due to its large weight, the connecting plate 31 will press the lower connecting rod 32 against the stop rod 91. The output end of the worm gear reducer motor 10 rotates clockwise (towards...). Figure 2 When rotating (with the direction in the middle as a reference), the stop bar 91 can be swung upward via the swing arm 92, thereby lifting the lower connecting rod 32 and changing the swing posture of the suspension mechanism 3.

[0033] Each end of the stop lever 91 is rotatably mounted with a guide wheel 12 for abutting against the lower connecting rod 32. When the stop lever 91 swings, the guide wheel 12 can roll along the abutting lower connecting rod 32. The rolling method avoids friction caused by relative displacement between the stop lever 91 and the connecting rod 32. The material of the guide wheel 12 is preferably polyurethane, which has good wear resistance and impact resistance.

[0034] Each end of the stop lever 91 is equipped with a first tension spring 2, and the other end of the first tension spring 2 is connected to the upper connecting rod 32. The guide wheel 12 is located between the first tension spring 2 and the swing arm 92, without interfering with each other. The first tension spring 2 can elastically connect the suspension mechanism 3 and the lever mechanism 9 together, so that the suspension mechanism 3 has a downward swinging force until the lower connecting rod 32 abuts against the guide wheel 12. When the upward force of the suspension mechanism 3 acting on the first tension spring 2 is greater than the downward force of the first tension spring 2, the lower connecting rod 32 will separate from the guide wheel 12. This avoids the unconventional force at the working end being directly transmitted to the lever mechanism 9 and the worm gear reducer motor 10, thereby causing structural damage to the lever mechanism 9 and the worm gear reducer motor 10.

[0035] Please see Figure 3 The structure of adjustment mechanism 4: The adjustment mechanism 4 includes a first baffle 41, a second baffle 42, a positioning bolt group 43, and a rotating joint 44. The rotating joint 44 is an existing component consisting of a left rotating seat and a right rotating seat that are hinged together by a pin. The adapter frame 7 is connected to the left rotating seat in the rotating joint 44 by a connecting bolt group, and the right rotating seat in the rotating joint 44 is connected to the connecting hole 8 by a connecting bolt group. The rotating joint 44 can be flexibly installed according to the position of the connecting hole 8 and is easy to disassemble, so that the adapter frame 7 can swing around the pin in the rotating joint 44 as the center.

[0036] First baffles 41 are fixedly installed on both the upper and lower sides of the left rotating seat, and second baffles 42 are fixedly installed on both the upper and lower sides of the right rotating seat. Each second baffle 42 has a screw hole, and a set of positioning bolts 43 for tightening against the first baffle 41 on the same side is screwed into the screw hole. The number of positioning bolt sets 43 on each second baffle 42 is 2 to 3 to ensure uniform force and meet the strength requirements. The swing amplitude of the left rotating seat can be adjusted by adjusting the length of the bolts extending out of the screw hole in the upper and lower positioning bolt sets 43, and locked by the nuts against the second baffle 42.

[0037] Both the positioning bolt group 43 and the connecting bolt group are existing components consisting of bolts and nuts. In the connecting bolt group, the bolt nuts and nuts are located on both sides of the component. When the nuts are tightened close to the nuts, the two components can be connected. In the positioning bolt group 43, the bolt nuts and nuts are located on the same side of the component. When the nuts are tightened away from the nuts and abut against the second baffle 42, the bolts are positioned by the increased friction.

[0038] Example 2: Please see Figure 4 This embodiment includes all the technical features of Embodiment 1, and the further added technical features are as follows: A rotating mechanism 6 is installed on the lower side of the adapter frame 7 away from the adjustment mechanism 4. A roller 5 is rotatably installed on the lower side of the rotating mechanism 6. According to actual usage requirements, the rotating mechanism 6 can connect and install the roller 5 on the adapter frame 7. In addition, the roller 5 can be arranged in multiple rows according to the farming requirements.

[0039] The rotating mechanism 6 includes a steel cable 61, a wheel frame 62, and a second tension spring 63. A pair of support seats are installed on the lower side of the adapter frame 7 away from the adjustment mechanism 4 by a set of connecting bolts. The same wheel frame 62 is rotatably installed between the pair of support seats. The wheel frame 62 is U-shaped. One side of the wheel frame 62 is rotatably assembled with the roller 5, and the other side of the wheel frame 62 is connected to the adapter frame 7 by the second tension spring 63. A steel cable 61 is fixedly installed between the wheel frame 62 and the adapter frame 7. The steel cable 61 is located on the side of the support seat near the roller 5.

[0040] The wheel frame 62 can swing around the support base, and the second tension spring 63 gives the right side of the wheel frame 62 an upward swinging force. Through the lever action, this gives the roller 5 a downward pressing force, while the steel cable 61 is used to limit the roller 5, that is, when the wheel frame 62 rotates counterclockwise (towards...). Figure 4 When the direction is referenced, the steel cable 61 is taut when rotated to the limit position; the setting of roller 5 and rotating mechanism 6 can provide auxiliary support for the end of the adapter 7 away from the adjustment mechanism 4, and roller 5 also has the function of downward compaction, which can be used to compact the soil after re-covering.

[0041] The working principle will now be introduced using the structure of Example 2: Connection and installation stage: Install the base plate 1 onto the connecting bar on the front or rear side of the vehicle using U-bolts; Depending on the type of crop, the necessary agricultural equipment (such as seeders, mulching machines, drip irrigation machines, etc.) is installed in the adapter frame 7, and the adjustment mechanism 4 is installed in a suitable position on the connecting plate 31 through the connecting hole 8. Alternatively, plowshares, weeders, and other adapter tools can be installed on the connecting plate 31 and below the adjustment mechanism 4 to be used simultaneously with the agricultural equipment. Furthermore, the electrical components of the agricultural equipment (such as electric seed metering devices, sensors, etc.) and the worm gear reducer motor 10 are connected to the power supply of the motor vehicle through a controller. The engine power of the motor vehicle is transmitted to the agricultural equipment in the form of rotational mechanical energy through the clutch and gearbox, ensuring that the working speed of the agricultural equipment is synchronized with the driving speed of the motor vehicle.

[0042] Adaptation and adjustment phase: Adjust and lock the positioning bolt groups 43 on the upper and lower sides of the adjustment mechanism 4, thereby swinging the adapter frame 7 and agricultural equipment up and down to complete the adjustment to adapt to the installation angle requirements of different agricultural equipment. The controller drives the worm gear reducer motor 10 to rotate the lever mechanism 9 clockwise, swinging the suspension mechanism 3 upward, thereby moving and lifting all the components and equipment installed on the connecting plate 31, so that the bottom of the equipment leaves the ground and then lowers it into the working land. The tillage depth can be adjusted according to the needs. At the same time, the cooperation between the rotating mechanism 6 and the roller 5 can help support the adapter frame 7 and also has the function of compacting the soil downwards, making it convenient to compact the soil after tillage and covering.

[0043] Protection phase: The worm gear reducer motor 10 and the lever mechanism 9 form a power module, while the suspension mechanism 3, the adjustment mechanism 4, and the adapter frame 7 form a transmission module. The two parts are set up separately. When the agricultural equipment is subjected to an upward unconventional reaction force, such as hitting a hard object and being unable to plow deeply and being lifted upward, the suspension mechanism 3 will separate from the lever mechanism 9 to avoid structural damage to the lever mechanism 9 and the worm gear reducer motor 10.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable suspension frame, characterized in that: Includes a base plate (1), on which a pair of vertical plates (11) are fixedly installed on the side wall, and a suspension mechanism (3) is connected to the pair of vertical plates (11). A worm gear reducer motor (10) is fixedly installed at the bottom of the base plate (1). The worm gear reducer motor (10) has two output ends, which pass through the vertical plates (11) on the same side. Each output end of the reducer motor (10) is equipped with a lever mechanism (9) for actuating the suspension mechanism (3). The levitation mechanism (3) is equipped with an adapter (7) on the side away from the base plate (1) via an adjustment mechanism (4).

2. The adjustable suspension frame according to claim 1, characterized in that: The suspension mechanism (3) includes a connecting plate (31), a connecting rod (32) and a shaft (33). The top of the vertical plates (11) is rotatably mounted with the same shaft (33). The ends of the shaft (33) are all fixedly mounted with connecting rods (32). The output ends of the worm gear reducer motor (10) are all rotatably mounted with connecting rods (32). The ends of the connecting rods (32) away from the vertical plates (11) are rotatably assembled with the same connecting plate (31). The connecting rods (32) are of equal length and are arranged parallel to each other. The connecting plate (31) is arranged vertically.

3. An adjustable suspension frame according to claim 2, characterized in that: The connecting plate (31) has a connection hole (8) for connecting external components.

4. An adjustable suspension frame according to claim 3, characterized in that: The lever mechanism (9) includes a stop bar (91) and a swing arm (92). The output end of the worm gear reducer motor (10) is fixedly installed with one end of the swing arm (92). The other end of the swing arm (92) is fixedly installed with the same stop bar (91). The end of the stop bar (91) extends out of the swing arm (92) and is located below the lower connecting rod (32).

5. An adjustable suspension frame according to claim 4, characterized in that: Each end of the stop bar (91) is rotatably mounted with a guide wheel (12) for abutting against the lower connecting rod (32).

6. An adjustable suspension frame according to claim 5, characterized in that: The end of each stop bar (91) is attached to one end of a first tension spring (2), and the other end of the first tension spring (2) is connected to the upper connecting rod (32). The guide wheel (12) is located between the first tension spring (2) and the swing arm (92).

7. An adjustable suspension frame according to claim 3, characterized in that: The adjustment mechanism (4) includes a first baffle (41), a second baffle (42), a positioning bolt group (43), and a rotating section (44). The adapter frame (7) is connected to the left rotating seat in the rotating section (44) by a connecting bolt group, and the right rotating seat in the rotating section (44) is connected to the connecting hole (8) by a connecting bolt group. The first baffle (41) is fixedly installed on both the upper and lower sides of the left rotating seat, and the second baffle (42) is fixedly installed on both the upper and lower sides of the right rotating seat. The second baffle (42) is provided with screw holes, and the positioning bolt group (43) for pressing against the first baffle (41) on the same side is screwed into the screw holes.

8. An adjustable suspension frame according to claim 1, characterized in that: A rotating mechanism (6) is installed on the lower side of the adapter (7) away from the adjustment mechanism (4), and a roller (5) is rotatably installed on the lower side of the rotating mechanism (6).

9. An adjustable suspension frame according to claim 8, characterized in that: The rotating mechanism (6) includes a steel cable (61), a wheel frame (62), and a second tension spring (63). A pair of support seats are installed on the lower side of the adapter frame (7) away from the adjustment mechanism (4) by a set of connecting bolts. The same wheel frame (62) is rotatably installed between the pair of support seats. One side of the wheel frame (62) is rotatably assembled with the roller (5), and the other side of the wheel frame (62) is hooked to the adapter frame (7) by the second tension spring (63). A steel cable (61) is fixedly installed between the wheel frame (62) and the adapter frame (7). The steel cable (61) is located on the side of the support seat near the roller (5).

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