Adjustable supporting platform for agricultural machinery maintenance

Abstract

The utility model discloses an adjustable support platform for agricultural machine maintenance, including the base, lifting device and bearing platform that set gradually from below to above, the bearing platform is used for placing the article of maintenance or for personnel operation, be equipped with maintenance device on the bearing platform, the maintenance device includes the motor no.

Description

Technical Field

[0001] This utility model belongs to the field of maintenance equipment technology, specifically referring to an adjustable support platform for agricultural machinery maintenance. Background Technology

[0002] In the repair and maintenance of modern industrial machinery, traditional repair methods typically use simple supports, jacks, or fixed-height repair platforms for support, which presents many problems: 1. During height adjustment, the use of jacks or simple supports lacks height feedback and locking mechanisms, making it impossible to quickly and accurately reproduce and maintain a specific height under different maintenance conditions, such as disassembly, assembly, and testing.

[0003] 2. The existing platform has limited functionality and lacks the ability to actively secure and fine-tune the positions of components placed on it. When it is necessary to adjust the horizontal position of a component to align it with a service point, it often requires multiple people to work together or use other tools to manually pry heavy components, which is extremely inconvenient and dangerous. The entire operation process has a low degree of automation and relies heavily on the experience and physical strength of the operators. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an adjustable support platform for agricultural machinery maintenance, which solves the problems of low platform height adjustment accuracy, inability to quickly locate and lock a specific height, and difficulty in adjusting the horizontal position of components on the maintenance platform, requiring manual prying and resulting in unstable fixation.

[0005] The technical solution adopted by this utility model is as follows: This utility model discloses an adjustable support platform for agricultural machinery repair, including a base, a lifting device and a bearing platform arranged from bottom to top. The bearing platform is used to place the object to be repaired or for personnel to operate. The support platform is equipped with a maintenance device, which includes a motor, a transmission mechanism, and at least one adsorption and fixing unit on the support platform. The transmission mechanism is connected to the output shaft of the motor and is driven by the motor to reciprocate on the support platform. The adsorption and fixing unit is connected to the transmission mechanism and moves synchronously with it. The adsorption and fixing unit is used to generate negative pressure to adsorb and fix the agricultural machinery parts to be repaired placed on the support platform. The lifting device is a scissor lift mechanism, which includes multiple sets of connecting rods that are cross-hinged by pins. The lifting device is connected to a drive component that drives its lifting.

[0006] Preferably, the transmission mechanism includes a lead screw that is rotatably disposed inside the bearing platform along a first direction, a sliding sleeve that is threadedly connected to the lead screw at the bottom of the adsorption and fixing unit, an adjustment groove that allows the adsorption and fixing unit to pass through and move along the first direction on the platform, and the output shaft of the motor is connected to the lead screw.

[0007] Preferably, the maintenance device further includes a guide assembly, which includes guide rods symmetrically arranged on both sides of the lead screw, and a sliding sleeve slidably sleeved on the guide rods.

[0008] Preferably, a support rod is provided between the connecting rods at the bottom, the driving assembly includes a lead screw two rotatably disposed in the base along a first direction, a sliding sleeve two threadedly connected to the outside of the lead screw two, the sliding sleeve two being connected to the bottom center of the support rod, a guide rod two arranged parallel to the lead screw two for constraining the movement trajectory of the sliding sleeve two on the base, and a motor two on the base, the output shaft of the motor two being connected to the lead screw two; A positioning sleeve is provided between the connecting rods at the bottom on the other side. A telescopic rod is provided on the positioning sleeve. The free end of the telescopic rod is slidably disposed in the upper sliding groove through a shaft pin.

[0009] Preferably, the base has a downward sliding groove on its side end, and the bearing platform has an upper sliding groove on its side end that corresponds to the downward sliding groove. The outer side of the top pin matches the upper sliding groove, and the outer side of the bottom pin matches the downward sliding groove.

[0010] Preferably, the adsorption and fixing unit includes an air pump fixedly mounted on a sliding sleeve, an inverted L-shaped sealing tube connected to the air pump, and a suction cup for fixing on the other side of the sealing tube.

[0011] Preferably, it further includes a control unit, the control unit comprising: A pressure sensor is located on one side of the suction cup of the adsorption and fixing unit to detect the negative pressure value at its adsorption end. A height sensor, installed on the support platform, is used to detect the height of the support platform; The processor is electrically connected to the pressure sensor, height sensor, motor one, air pump, motor two, and telescopic rod. The processor is configured to: receive signals from the pressure sensor, and when the negative pressure value is lower than a first preset threshold, generate and execute a first control command to control the first motor to stop running or reverse fine-tune its descent, as well as the state of the air pump; receive signals from the height sensor, compare them with a preset target height value, generate and execute a second control command to control the operation of the second motor and the telescopic rod, so that the carrying platform reaches and maintains the target height value.

[0012] Preferably, the outer side of the base is provided with an upwardly folding lower positioning part, and the outer side of the bearing platform is provided with a downwardly folding upper fixing part. When the lifting device is in a fully retracted state, the upper fixing part is sleeved on the outside of the lower positioning part, and the two form a nested structure.

[0013] The beneficial effects of this utility model by adopting the above structure are as follows: 1. A maintenance device consisting of a transmission mechanism and an adsorption fixing unit is installed. Utilizing the principle of negative pressure adsorption, it flexibly fixes components, providing uniform adsorption force. This effectively adapts to irregular surfaces, firmly securing components to the support platform and completely eliminating the risk of slippage and tipping, greatly improving operational safety. If the adsorption force abnormally decreases (e.g., due to air leakage caused by uneven component surfaces), the system can automatically intervene to prevent lifting operations from being performed while the component is not securely fixed, further ensuring safety.

[0014] 2. The scissor lift mechanism, driven by a lead screw and telescopic rod, integrates a height sensor and processor to form a closed-loop control system, which realizes precise and stepless adjustment of the height of the carrying platform. It can automatically reach and stably maintain the preset target height through the control system, which greatly improves the convenience and accuracy of maintenance operations.

[0015] 3. When the platform descends to its lowest point, the upper and lower positioning parts fit together, making the entire device compact and reducing space occupation, making it easier to move and store, and making the overall structure more stable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an adjustable support platform for agricultural machinery maintenance according to this scheme; Figure 2 This is an enlarged view of the internal structure of the repair device in this application; Figure 3 for Figure 1 Another perspective illustration; Figure 4 for Figure 1 The main view; Figure 5 This is a schematic diagram of the control unit in this application.

[0017] in: 1. Base; 2. Lifting device; 3. Support platform; 4. Maintenance device; 5. Drive assembly; 6. Control unit; 11. Sliding groove; 12. Lower positioning part; 21. Pin; 22. Connecting rod; 23. Support rod; 31. Adjustment groove; 32. Upper sliding groove; 33. Upper fixing part; 41. Motor 1; 42. Transmission mechanism; 421. Lead screw 1; 43. Adsorption and fixing unit; 431. Sliding sleeve 1; 432. Air pump; 433. Sealing tube; 434. Suction cup; 44. Guide assembly; 441. Guide rod 1. 51. Lead screw II; 52. Sliding sleeve II; 53. Guide rod II; 54. Motor II; 55. Positioning sleeve; 56. Telescopic rod. 61. Pressure sensor; 62. Height sensor; 63. Processor.

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0020] like Figures 1-4 As shown, this utility model provides an adjustable support platform for agricultural machinery maintenance, including a base 1, a lifting device 2, and a bearing platform 3 arranged from top to bottom.

[0021] The base 1 serves as the supporting foundation for the entire device, and a drive assembly 5 is installed inside it. The drive assembly 5 consists of a lead screw 51 driven by a motor 54, a sliding sleeve 52 threadedly engaged with the lead screw 51, and a guide rod 53 that constrains the movement trajectory of the sliding sleeve 52. The side wall of the base 1 has a downward groove 11, and the outer side is provided with an upwardly folded lower positioning part 12.

[0022] The lifting device 2 is a scissor-type structure, consisting of multiple sets of connecting rods 22 that are cross-hinged by pins 21. Two support rods 23 are hinged between the bottom connecting rods, with the bottom center of one support rod 23 hinged to the sliding sleeve 52 of the drive assembly 5. When the motor 54 rotates forward and backward, it drives the sliding sleeve 52 to move back and forth via the lead screw 51. A positioning sleeve 55 is provided on the other support rod 23, and a telescopic rod 56 is provided on the positioning sleeve 55. The free end of the telescopic rod 56 is slidably positioned in the upper sliding groove 32 via a pin, thereby pushing the scissor mechanism to extend or retract, achieving lifting. The two ends of the pins 21 at the top and bottom are respectively slidably embedded in the upper sliding groove 32 of the bearing platform 3 and the lower sliding groove 11 of the base 1, ensuring stability during the lifting process.

[0023] The support platform 3 is used to place maintenance parts or for maintenance personnel to stand and operate. It integrates a maintenance device 4. The maintenance device 4 includes a motor 41, a lead screw 421 driven by the motor 41, guide rods 441 (guide components 44) symmetrically arranged on both sides of the lead screw 421, and a sliding sleeve 431 threadedly engaged with the lead screw 421. The adsorption and fixing unit 43 can adopt a structure combining a vacuum generator and a suction cup. Specifically, the adsorption and fixing unit 43 includes an air pump 432 fixed on the sliding sleeve 431, with an inverted L-shaped sealing tube 433 connected to the air pump 432. A suction cup 434 is provided on the other side of the sealing tube 433 for fixing. The sealing tube 433 is fixed to the sliding sleeve 431 and passes through an adjustment groove 31 on the platform 3. When the motor 41 is working, it drives the adsorption and fixing unit 43 to move along the adjustment groove 31, thereby adjusting the position of the adsorbed parts.

[0024] In addition, the outer side of the support platform 3 is provided with a downward folding upper fixing part 33. When the platform descends to the lowest point, the upper fixing part 33 fits perfectly over the lower positioning part 12, forming a compact nested structure that is easy to store.

[0025] The control unit 6 is the core of the intelligent system of this invention. The pressure sensor 61 is installed in the vacuum tubing of the adsorption and fixing unit 43 to monitor the negative pressure value. The height sensor 62, which can be a laser rangefinder or an ultrasonic distance sensor, is installed at the bottom of the support platform 3 to measure the platform's height above the ground. The processor 63 is electrically connected to the pressure sensor 61, the height sensor 62, motor 41, the air pump 432, motor 54, and the telescopic rod 56.

[0026] Processor 63 has built-in control logic: Safety control: The pressure sensor 61 is read in real time. When the negative pressure value is lower than the preset safety threshold (indicating that the adsorption is not firm), a stop command is immediately sent to motor 54, or motor 54 is controlled to slightly reverse so that the platform drops slightly to alleviate any possible warping or deformation of the components and ensure safety.

[0027] Height control: Receives user input or preset target height values ​​and continuously reads feedback values ​​from height sensor 62. Using PID and other control algorithms, it calculates control signals to drive motor 54 and telescopic rod 56, enabling the support platform 3 to quickly and smoothly reach and precisely maintain the target height.

[0028] The workflow is as follows: First, push the structure to the maintenance station and connect the power. Then, hoist the component to be maintained onto the support platform 3.

[0029] The control panel (not shown in the attached diagram) connects to the processor 63, activating the adsorption and fixing unit 43 to generate negative pressure for adsorption of the components. Once the pressure sensor 61 detects that the negative pressure has reached a stable value, the system enters a ready state. The operator inputs the desired working height, and the processor 63 controls motor 54 to drive the lifting device 2, precisely raising the platform to that height and locking it. If fine-tuning of the component's horizontal position is required, controlling motor 41 to rotate forward or backward will drive the adsorption and fixing unit 43 to move the component.

[0030] After maintenance, the platform is lowered to its lowest storage position, with the upper fixing part 33 nested with the lower positioning part 12, and then moved out of the workstation after power is cut off.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0032] 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.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An adjustable support platform for agricultural machinery repair, comprising a base (1), a lifting device (2), and a bearing platform (3) arranged sequentially from bottom to top, wherein the bearing platform (3) is used to place objects to be repaired or for personnel to operate, characterized in that: The support platform (3) is provided with a maintenance device (4). The maintenance device (4) includes a motor (41), a transmission mechanism (42) and at least one adsorption and fixing unit (43) on the support platform (3). The transmission mechanism (42) is connected to the output shaft of the motor (41) and is driven by the motor (41) to reciprocate on the support platform (3). The adsorption and fixing unit (43) is connected to the transmission mechanism (42) and moves synchronously with it. The adsorption and fixing unit (43) is used to generate negative pressure to adsorb and fix the agricultural machinery parts to be repaired placed on the support platform (3). The lifting device (2) is a scissor lift mechanism, which includes multiple sets of connecting rods (22) that are cross-hinged by pins (21). The lifting device (2) is connected to a drive assembly (5) that drives its lifting.

2. The adjustable support platform for agricultural machinery repair according to claim 1, characterized in that: The transmission mechanism (42) includes a lead screw (421) that is rotatably disposed inside the bearing platform (3) in the first direction. The bottom of the adsorption fixing unit (43) is provided with a sliding sleeve (431) that is threadedly connected to the lead screw (421). An adjustment groove (31) is provided on the table surface of the bearing platform (3) for the adsorption fixing unit (43) to pass through and move in the first direction. The output shaft of the motor (41) is connected to the lead screw (421).

3. The adjustable support platform for agricultural machinery repair according to claim 2, characterized in that: The maintenance device (4) further includes a guide assembly (44), which includes a guide rod (441) symmetrically arranged on both sides of the lead screw (421), and a sliding sleeve (431) is slidably sleeved on the guide rod (441).

4. The adjustable support platform for agricultural machinery repair according to claim 3, characterized in that: The base (1) has a sliding groove (11) on its side end, and the bearing platform (3) has an upper sliding groove (32) corresponding to the sliding groove (11) on its side end. The outer side of the top pin matches the upper sliding groove (32), and the outer side of the bottom pin matches the sliding groove (11). A support rod (23) is provided between the connecting rods (22) at the bottom. The drive assembly (5) includes a lead screw (51) rotatably disposed in the base (1) along a first direction. A sliding sleeve (52) with a threaded connection is provided on the outside of the lead screw (51). The sliding sleeve (52) is connected to the bottom center of the support rod (23). The base (1) is also provided with a guide rod (53) arranged parallel to the lead screw (51) for constraining the movement trajectory of the sliding sleeve (52). A motor (54) is provided on the base (1). The output shaft of the motor (54) is connected to the lead screw (51). A positioning sleeve (55) is provided between the connecting rods (22) at the bottom of the other side. A telescopic rod (56) is provided on the positioning sleeve (55). The free end of the telescopic rod (56) is slidably disposed in the upper sliding groove (32) through a shaft pin.

5. The adjustable support platform for agricultural machinery repair according to claim 4, characterized in that: The adsorption fixing unit (43) includes an air pump (432) fixed on a sliding sleeve (431), and an inverted L-shaped sealing tube (433) is connected to the air pump (432). A suction cup (434) is provided on the other side of the sealing tube (433) for fixing.

6. The adjustable support platform for agricultural machinery repair according to claim 5, characterized in that: It also includes a control unit (6), which includes: A pressure sensor (61) is located on one side of the suction cup (434) of the adsorption fixing unit (43) to detect the negative pressure value at its adsorption end; A height sensor (62) is installed on the support platform (3) to detect the height of the support platform (3); The processor (63) is electrically connected to the pressure sensor (61), height sensor (62), motor one (41), air pump (432), motor two (54), and telescopic rod (56); The processor (63) is configured to: receive the signal from the pressure sensor (61), and when the negative pressure value is lower than a first preset threshold, generate and execute a first control command to control the first motor (41) to stop running or reverse fine-tune its descent, and the state of the air pump (432); receive the signal from the height sensor (62), compare it with a preset target height value, generate and execute a second control command to control the operation of the second motor (54) and the telescopic rod (56), so that the bearing platform (3) reaches and maintains the target height value.

7. The adjustable support platform for agricultural machinery repair according to claim 1, characterized in that: The base (1) has an upward-folding lower positioning part (12) on its outer side, and the bearing platform (3) has a downward-folding upper fixing part (33) on its outer side. When the lifting device (2) is in a fully retracted state, the upper fixing part (33) is sleeved on the outside of the lower positioning part (12), and the two form a nested structure.

Images