Self-adaptive auxiliary mechanism and material conveying device

Abstract

The utility model provides a self-adaptive auxiliary mechanism and a material conveying device, and relates to the technical field of material conveying. The conveying roller assembly comprises a first roller, a second roller and a third roller which are rotationally arranged on the frame body, and the central axes of the first roller, the second roller and the third roller are parallel to one another and are in different planes; the fixing shaft is arranged on the frame body and used for being rotationally connected with external equipment, and the central axis of the fixing shaft coincides with or is parallel to the central axis of the first roller; wherein the distance between the second roller and the first roller is equal to the distance between the third roller and the first roller, the first roller and the second roller are tangent to the first plane, and the second roller and the third roller are tangent to the second plane. Compared with the prior art, the conveyor belt has the advantages that stress can be released intermittently, abrasion is reduced, and therefore the service life of the conveyor belt is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to material conveying technical field especially relates to a self -adaptation auxiliary mechanism and material conveying device. BACKGROUND

[0002] In the automated production, material conveying is one of the important links to ensure the production process efficient and stable. For example, in the production process of spiral pipe, the strip material needs to be accurately conveyed to the forming mechanism through the transmission system to realize the automated production of spiral pipe. In this process, the stability of material transmission not only directly affects the production efficiency, but also has a significant effect on the quality of finished products.

[0003] In the related art, a platform is usually provided, and a conveyor belt is arranged above the platform, forming a space for material passing between the conveyor belt and the platform. In the material conveying process, the conveyor belt not only applies appropriate pressure to ensure the shaping of the material, but also generates friction force by contacting the material to move the material. The conveyor belt drives the material to be conveyed along the platform while compressing the material, thereby realizing accurate transmission.

[0004] However, in this design, the conveyor belt is always in a highly tense state, and long-term continuous work can easily cause wear and fatigue of the conveyor belt, thereby shortening its service life. This not only increases the maintenance cost of the equipment, but also adversely affects the continuity and efficiency of production. SUMMARY

[0005] To solve the above problems, the present application provides a self-adaptive auxiliary mechanism and a material conveying device.

[0006] In a first aspect, the present application provides a self-adaptive auxiliary mechanism, which adopts the following technical solution:

[0007] A self-adaptive auxiliary mechanism, comprising:

[0008] a frame body;

[0009] a conveyor roller assembly, comprising a first roller, a second roller and a third roller rotatably arranged on the frame body, the center axes of the first roller, the second roller and the third roller being parallel to each other and in different planes; and

[0010] a fixed shaft arranged on the frame body and used for rotatably connecting with an external device, the center axis of the fixed shaft coinciding with or being parallel to the center axis of the first roller;

[0011] wherein, the distance between the second roller and the first roller is the same as the distance between the third roller and the first roller, the first roller and the second roller are tangent to a first plane, and the second roller and the third roller are tangent to a second plane.

[0012] Preferably, the center of gravity of the frame body is located on the side of the second roller.

[0013] Preferably, the center axis of the fixed shaft coincides with the center axis of the first roller, and the frame body comprises a counterweight, and the center of gravity of the counterweight is located on the side of the second roller.

[0014] Preferably, the frame body comprises a first support portion, and the first support portion is located between the first roller and the second roller, and is used for providing support to the conveyor belt at a position subjected to pressure when the conveyor belt at the position between the first roller and the second roller is subjected to pressure.

[0015] Preferably, the first support portion is used for supporting the conveyor belt at a first support surface, and the first support surface is parallel to the first plane.

[0016] Preferably, the frame body comprises a second support portion, and the second support portion is located between the second roller and the third roller, and is used for providing support to the conveyor belt at a position subjected to pressure when the conveyor belt at the position between the second roller and the third roller is subjected to pressure.

[0017] Preferably, the second support portion is used for supporting the conveyor belt at a second support surface, and the second support surface is parallel to the second plane.

[0018] Preferably, the distance between the second roller and the third roller is greater than the distance between the first roller and the second roller.

[0019] Preferably, the frame body is provided with a limiting portion, and the limiting portion is used for abutting against an external device to limit the angle of rotation of the frame body relative to the external device.

[0020] In a second aspect, the application provides a material conveying device, which adopts the following technical scheme:

[0021] A material conveying device comprises a conveying platform, a rack and a conveyor belt, the rack is provided with a transmission roller, and the transmission roller is used for guiding the conveyor belt to convey along a preset path.

[0022] Further comprising the self-adaptive auxiliary mechanism according to the technical scheme, the conveyor belt is driven in cooperation with the first roller, the second roller and the third roller, the rack is rotationally connected with the fixed shaft, the first roller, the second roller and the third roller are located above the conveying platform, and the part of the conveyor belt between the second roller and the third roller and the conveying platform forms a conveying area for the material to pass through.

[0023] The utility model has the advantages and beneficial effects that:

[0024] The application provides an auxiliary mechanism capable of being rotationally connected with an external device. When there is no material between the auxiliary mechanism and the external device, the auxiliary mechanism can rotate freely relative to the external device, so that the conveying belt is in a non-tight state, thereby prolonging the service life of the conveying belt. When the material enters between the auxiliary mechanism and the external device, the pushing force of the material reversely rotates the auxiliary mechanism, so that the conveying belt is tight between the auxiliary mechanism and the external device, thereby ensuring smooth transmission of the material.

[0025] The design has the advantages that the conveying belt is automatically tight when conveying the material, thereby ensuring stable transmission of the material, and when there is no material, the conveying belt is in a relaxed state, so that stress can be intermittently released, thereby reducing wear. The intermittent relaxed state effectively reduces long-term stress accumulation of the conveying belt, delays material fatigue, and greatly improves the service life of the conveying belt. In addition, the mechanism automatically adjusts the tightness of the conveying belt, thereby ensuring the transmission efficiency of the material and avoiding unnecessary tightness of the conveying belt, and further reducing energy consumption and equipment wear. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0027] Figure 1 is a first structural schematic diagram of the embodiment of the present application;

[0028] Figure 2 is a structural schematic diagram when the hidden part of the frame body is hidden;

[0029] Figure 3 is a second structural schematic diagram of the embodiment of the present application;

[0030] Figure 4 is a structural schematic diagram when the frame body cooperates with the rack;

[0031] Figure 5 is a structural schematic diagram of the connection between the frame body and the rack, mainly showing the cooperation structure of the rack and the limiting part.

[0032] In the drawings, the following are marked:

[0033] 10, rack; 20, conveyor belt; 30, transmission roller; 40, conveying platform; 100, frame body; 110, counterweight; 120, first support part; 121, first support surface; 130, second support part; 131, second support surface; 140, limiting part; 200, conveying roller assembly; 210, first roller; 220, second roller; 230, third roller; 300, fixed shaft. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0035] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a category and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0036] In the related art, a conveyor belt is usually provided above the conveying platform, and a gap for passing the material is formed between the conveyor belt and the conveying platform. In use, the material is placed on the conveying platform, and after the material contacts the conveyor belt, the material is conveyed under the friction force of the conveyor belt. The conveyor belt is supported by the transmission roller and is tightly stretched in the upper area of the conveying platform. However, the inventors have found that the conveyor belt is in a state of being stretched for a long time, which can easily cause wear and material fatigue, thereby shortening the service life thereof.

[0037] In order to solve this problem, the present application proposes a self-adaptive auxiliary mechanism. The mechanism can rotate relative to the conveying platform. When the material enters between the auxiliary mechanism and the conveying platform, the pushing force of the material increases the distance between the auxiliary mechanism and the conveying platform, promotes the rotation of the auxiliary mechanism relative to the conveying platform, and further increases the distance between the auxiliary mechanism and the transmission roller, so that the conveyor belt is tensioned to adapt to the transmission requirement of the material.

[0038] When there is no material between the auxiliary mechanism and the conveyor platform, the auxiliary mechanism will rotate in the opposite direction relative to the conveyor platform under the tension of the conveyor belt, reducing the distance between the auxiliary mechanism and the transmission rollers, thus restoring the conveyor belt to an untensioned state. Through this adaptive adjustment mechanism, the conveyor belt can avoid being in a taut state for a long time when not in use, thereby effectively reducing wear and fatigue and extending the service life of the conveyor belt.

[0039] The following is combined with Figures 1 to 5 The adaptive auxiliary mechanism and material conveying device provided in this application will be described in detail through specific embodiments and application scenarios.

[0040] The first aspect of this embodiment describes in detail an adaptive auxiliary mechanism.

[0041] Reference Figure 1 , Figure 5 This application provides an adaptive auxiliary mechanism, including a frame 100, a conveyor roller assembly 200, and a fixed shaft 300. The frame 100 provides a mounting base for the conveyor roller assembly 200 and the fixed shaft 300; that is, both the conveyor roller assembly 200 and the fixed shaft 300 are mounted on the frame 100. Specifically, the fixed shaft 300 allows the conveyor roller assembly 200 and the frame 100 to be rotatably mounted onto an external device.

[0042] For example, the external equipment includes a conveyor platform 40 and a transfer roller 30, with the frame 100 rotatably mounted above the conveyor platform 40. This design creates a gap between the transfer roller assembly 200 and the conveyor platform 40 for material passage, while the conveyor belt 20 is taut between the transfer roller assembly 200 and the transfer roller 30, ensuring stable material transport during the conveying process.

[0043] Through this design, the conveyor roller assembly 200 not only supports the conveyor belt 20 but also forms a clearance with the conveyor platform 40 to meet material transfer requirements, while simultaneously enabling adaptive adjustment of the tension and slack of the conveyor belt 20. During material transfer, the conveyor belt 20 is automatically tensioned to ensure smooth material transport; when there is no material, the conveyor belt 20 is in a slack state, effectively reducing wear and fatigue caused by long-term tension, thereby extending the service life of the conveyor belt 20.

[0044] Specifically, when there is no material, the conveyor roller assembly 200 rotates relative to the conveyor platform 40 under the tension of the conveyor belt 20, the gap decreases, and the conveyor belt 20 is in an untensioned state; when material enters the transmission process, the material pushes the gap between the conveyor roller assembly 200 and the conveyor platform 40 to increase, the conveyor roller assembly 200 rotates relative to the conveyor platform 40, and the conveyor belt 20 enters a tensioned state, thereby ensuring the smooth and efficient material transmission.

[0045] In some embodiments, referring to Figure 1 , Figure 2 , the conveying roller assembly 200 includes a first roller 210, a second roller 220 and a third roller 230, which are all cylindrical in shape and have their central axes parallel to each other and out of the same plane. That is, the central axes of the first roller 210, the second roller 220 and the third roller 230 are not in the same plane, and exemplarily, they are located at the three corners of a triangle, respectively. The first roller 210, the second roller 220 and the third roller 230 are all rotatably connected to the frame 100, which means that the first roller 210, the second roller 220 and the third roller 230 can rotate freely along their respective axes relative to the frame 100.

[0046] In some embodiments, the distance between the second roller 220 and the first roller 210 is the same as the distance between the third roller 230 and the first roller 210, and the first roller 210 and the second roller 220 are tangent to the first plane, and the second roller 220 and the third roller 230 are tangent to the second plane. That is, the first roller 210, the second roller 220 and the third roller 230 are located at the three corners of an isosceles triangle. And the conveying belt 20 wound between the first roller 210 and the second roller 220 is parallel to the first plane, and the conveying belt 20 wound between the second roller 220 and the third roller 230 is parallel to the second plane.

[0047] In some embodiments, referring to Figure 1 , Figure 2 , the fixed shaft 300 is fixedly connected to the frame 100, for example, by welding or threaded connection. In other embodiments, the fixed shaft 300 is rotatably connected to the frame 100, that is, the fixed shaft 300 can rotate freely along its central axis relative to the frame 100. Among them, the central axis of the fixed shaft 300 is parallel to or coincides with the central axis of the first roller 210, that is, in some embodiments, the fixed shaft 300 is coaxially connected to the first roller 210; while in other embodiments, the fixed shaft 300 is parallel to the first roller 210. In specific applications, the fixed shaft 300 is rotatably connected to external equipment, so that the frame 100 can rotate freely relative to the external equipment, thereby better achieving adaptive adjustment. This design not only improves the conveying efficiency, but also reduces the wear and fatigue of the conveying belt 20, prolonging the service life of the equipment.

[0048] According to an optional embodiment, referring to Figure 2 , Figure 3, the center of gravity of the frame 100 is located on the side of the second roller 220. Such design makes the frame 100 naturally rotate towards the third roller 230 when no external force is applied, so that the first roller 210, the second roller 220 and the third roller 230 are closer to the transmission roller 30. The result of this structure is that the conveyor belt 20 is in a relaxed state when there is no material conveying, which can effectively release stress and reduce fatigue and wear caused by long-term tension of the conveyor belt 20.

[0049] The advantage of such a center of gravity layout is that the relaxed state of the conveyor belt 20 is achieved by the natural action of gravity without the need for additional mechanical or power system adjustment. The conveyor belt 20 releases accumulated stress in a relaxed state, which helps to reduce material fatigue and improve the durability and service life of the conveyor belt 20. In actual use, when material enters the conveying system, the external force will push the frame 100 to rotate in the opposite direction, and the conveyor belt 20 will return to the tensioned state to ensure smooth transmission of the material. This design optimizes the service life of the conveyor belt 20 and improves the working efficiency of the conveying system.

[0050] According to an optional embodiment, referring to Figure 1 , Figure 2 , the center axis of the fixed shaft 300 coincides with the center axis of the first roller 210, and the frame 100 includes a counterweight 110, the center of gravity of the counterweight 110 is located on the side close to the second roller 220. In use, the fixed shaft 300 is rotationally connected with external equipment, so that a gap is formed between the conveyor belt 20 between the second roller 220 and the third roller 230 and the conveying platform 40 for the material to pass through. The action of the counterweight 110 makes the frame 100 naturally tilt towards the third roller 230 when no external force is applied, so that the frame 100 is closer to the transmission roller 30, and at this time the conveyor belt 20 is in a relaxed state, which is beneficial to release stress and prolong the service life of the conveyor belt 20.

[0051] In specific use, the conveyor belt 20 is guided by the conveying roller and passes through the first roller 210, the second roller 220 and the third roller 230 in turn, forming a closed loop structure with the head connected to the tail. The gap between the conveyor belt 20 between the second roller 220 and the third roller 230 and the conveying platform 40 provides a path for the material to pass through. When the material enters the gap, it will adhere to the conveyor belt 20 between the second roller 220 and the third roller 230, and the material will be conveyed under the driving of the conveyor belt 20.

[0052] When no material passes through, the frame 100 will rotate relative to the external device due to the pulling effect of the conveying belt 20 and the influence of the counterweight 110, causing the frame 100 to tilt towards the conveying roller direction. At this time, the conveying belt 20 is in an untensioned state, which can effectively release the pressure it bears, reduce the fatigue and wear of the conveying belt 20, and prolong its service life. When material passes through, the conveying belt 20 closely adheres to the second roller 220 and the third roller 230 between the material and the second roller 220 and the third roller 230, and the material will push the second roller 220 and the third roller 230 to rotate with them. Under the push of the material, the conveying belt 20 is automatically tensioned, ensuring the stable transmission process of the material.

[0053] According to an optional embodiment, with reference to Figure 2 , Figure 3 , the frame 100 comprises a first support portion 120, which is located between the first roller 210 and the second roller 220. When the area of the conveying belt 20 between the first roller 210 and the second roller 220 is under pressure, the first support portion 120 is used to provide support to the conveying belt 20 at the position under pressure. During the operation of the conveying device, the conveying belt 20 is prone to fluctuations due to device vibration or external interference. When the fluctuation amplitude is large, it will cause the tension of the conveying belt 20 to be uneven, thereby affecting the conveying effect of the material. At the same time, frequent fluctuations can cause the frame 100 to repeatedly rotate relative to the external device, affecting the overall stability of the device.

[0054] By providing the first support portion 120, the fluctuation amplitude of the conveying belt 20 can be effectively limited, and the tension stability of the conveying belt 20 can be maintained, thereby ensuring smooth transmission of the material. In addition, during use, the conveying belt 20 can be impacted by external objects. Such impact can cause the conveying belt 20 to suddenly tension or relax, thereby affecting its service life. The provision of the first support portion 120 can provide support when the conveying belt 20 is subjected to external pressure, thereby avoiding excessive deformation of the conveying belt 20, reducing the damage caused by sudden tensioning or relaxation, prolonging the service life of the conveying belt 20, and improving the operation stability and reliability of the device.

[0055] According to an optional embodiment, with reference to Figure 2 , Figure 3 , the first support portion 120 is used to support the conveying belt 20, and a first support surface 121 is provided on the conveying belt 20, and the first support surface 121 is parallel to the first plane. By providing the first support surface 121 parallel to the first plane, more stable support can be provided for the conveying belt 20 between the first roller 210 and the second roller 220, thereby keeping the conveying belt 20 in a stable state during operation.

[0056] This design effectively prevents the conveyor belt 20 from excessive fluctuation or deformation during transmission, especially in the case of device vibration or external interference. The presence of the first support surface 121 can disperse the pressure borne by the conveyor belt 20, reduce local stress concentration, ensure that the conveyor belt 20 maintains a uniform tensioning state during use, thereby improving the stability of material conveying, reducing unnecessary wear and fatigue, and further prolonging the service life of the conveyor belt 20.

[0057] According to an optional embodiment, the frame body 100 comprises a second support portion 130, which is located between the second roller 220 and the third roller 230. When the area of the conveyor belt 20 between the second roller 220 and the third roller 230 is compressed, the second support portion 130 is used to provide support to the conveyor belt 20 at the compressed position. By providing the second support portion 130, the stability of the conveyor belt 20 in this area can be effectively improved.

[0058] According to an optional embodiment, the second support portion 130 is used to support the conveyor belt 20 at the second support surface 131, which is parallel to the second plane. By providing the second support surface 131 parallel to the second plane, the operation of the conveyor belt 20 between the second roller 220 and the third roller 230 can be further stabilized, reducing fluctuations caused by external interference, and ensuring the smoothness and efficiency of the transmission process.

[0059] Especially when the material passes through the conveyor belt 20 between the second roller 220 and the third roller 230, the second support surface 131 provides additional support to prevent the conveyor belt 20 from excessive shaking or deformation, thereby keeping the material in a more stable state during conveying. This not only improves the accuracy of conveying, but also reduces the risk of shaking or deviation of the material during conveying. In addition, the presence of the second support surface 131 can disperse the stress on the conveyor belt 20, prevent excessive local stress from causing wear, and further prolong the service life of the conveyor belt 20.

[0060] According to an optional embodiment, the distance between the second roller 220 and the third roller 230 is greater than the distance between the first roller 210 and the second roller 220. With this design, the length of the conveyor belt 20 between the second roller 220 and the third roller 230 increases, thereby providing a larger contact area and friction, which is beneficial for better conveying of the material.

[0061] Due to the large distance between the second roller 220 and the third roller 230, the contact time of the material with the conveying belt 20 is relatively prolonged, thereby enhancing the stability of the material during conveying. The longer conveying belt 20 not only effectively prevents the material from slipping or deviating during conveying, but also reduces the slipping phenomenon between the conveying belt 20 and the material, thereby improving the transmission efficiency. Such a structural design enables the material to obtain stronger driving force when passing through this area, which helps to smoothly and efficiently complete the material transmission task.

[0062] According to an optional embodiment, with reference to Figure 1 、 Figure 5 The frame body 100 is provided with a limiting portion 140 for abutting against external equipment to limit the angle of rotation of the frame body 100 relative to the external equipment. By providing the limiting portion 140, the rotation range of the frame body 100 can be effectively controlled, thereby avoiding excessive relaxation of the conveying belt 20 when the frame body 100 rotates at a large angle, and even avoiding the risk of falling off.

[0063] The limiting portion 140 functions to contact the external equipment when the frame body 100 reaches the maximum allowable rotation angle, thereby preventing the frame body 100 from continuing to rotate and ensuring that the conveying belt 20 always remains within a safe tensioning or relaxation range, thereby preventing unexpected derailment of the conveying belt 20 during operation.

[0064] For example, the limiting portion 140 can be designed as a protruding structure protruding from the surface of the frame body 100. When the frame body 100 rotates relative to the external equipment, the protruding structure gradually approaches the external equipment and contacts the external equipment when reaching the preset maximum rotation angle, thereby preventing further rotation. In this way, the limiting portion 140 can effectively limit the rotation angle of the frame body 100 relative to the external equipment, thereby ensuring that the conveying belt 20 always operates within a controllable range and avoiding excessive relaxation or damage of the conveying belt 20.

[0065] A second aspect of the embodiment provides a detailed description of a material conveying device.

[0066] With reference to Figure 4 、 Figure 5 A material conveying device includes a conveying platform 40, a frame 10, and a conveying belt 20. The frame 10 is provided with a transmission roller 30 for guiding the conveying belt 20 to convey along a preset path.

[0067] The adaptive auxiliary mechanism in the above-mentioned embodiment is also included, the conveying belt 20 is driven in cooperation with the first roller 210, the second roller 220 and the third roller 230, the frame 10 is rotationally connected with the fixed shaft 300, the first roller 210, the second roller 220 and the third roller 230 are located above the conveying platform 40, and the conveying belt 20 is located between the conveying platform 40 and the conveying area for the material passing between the second roller 220 and the third roller 230.

[0068] When there is no material passing, the conveying belt 20 is in a slack state. At this time, the tension of the conveying belt 20 and the counterweight effect of the frame body 100 cause the frame body 100 to be slightly inclined relative to the frame 10, so that the conveying belt 20 is in a slack state. This design helps to release the pressure of the conveying belt 20, reduces fatigue and wear caused by long-term tension, thereby prolonging the service life.

[0069] When the material enters the conveying area, the material pushes the second roller 220 and the third roller 230, so that the frame body 100 rotates in the opposite direction, thereby automatically tensioning the conveying belt 20. At this time, the conveying belt 20 between the second roller 220 and the third roller 230 is tightly attached to the surface of the material and exerts sufficient friction to ensure stable transmission of the material. Through this adaptive adjustment, the conveying belt 20 is always in the best tensioning state during the material transmission process, which can not only ensure the transmission efficiency, but also prevent the conveying belt 20 from being in a long-term tension state after the material conveying is completed.

[0070] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An adaptive assist mechanism, characterized by, The application relates to a conveying device. The conveying device comprises a frame (100), a conveying roller assembly (200) and a fixed shaft (300). The conveying roller assembly (200) comprises a first roller (210), a second roller (220) and a third roller (230) which are rotatably arranged on the frame (100), and the central axes of the first roller (210), the second roller (220) and the third roller (230) are parallel to each other and are in different planes. The distance between the second roller (220) and the first roller (210) is the same as the distance between the third roller (230) and the first roller (210), the first roller (210) and the second roller (220) are tangent to a first plane, and the second roller (220) and the third roller (230) are tangent to a second plane. The center of gravity of the frame (100) is located on the side of the fixed shaft (300) towards the second roller (220).

2. A self-adapting assistive mechanism according to claim 1, wherein, The central axis of the fixed shaft (300) is coincident with the central axis of the first roller (210), and the frame (100) comprises a counterweight (110), and the center of gravity of the counterweight (110) is located on the side close to the second roller (220).

3. The self-adapting assistive mechanism of claim 1, wherein, The frame (100) comprises a first supporting part (120) located between the first roller (210) and the second roller (220), and when the conveying belt (20) is pressed in the area between the first roller (210) and the second roller (220), the first supporting part (120) is used for supporting the conveying belt (20) at the pressed position.

4. The self-adapting assistive mechanism of claim 1, wherein, The first supporting part (120) is provided with a first supporting surface (121) on the conveying belt (20), and the first supporting surface (121) is parallel to the first plane.

5. A self-adapting assistive mechanism according to claim 4, wherein, The frame (100) comprises a second supporting part (130) located between the second roller (220) and the third roller (230), and when the conveying belt (20) is pressed in the area between the second roller (220) and the third roller (230), the second supporting part (130) is used for supporting the conveying belt (20) at the pressed position.

6. The self-adapting assistive mechanism of claim 1, wherein, The second supporting part (130) is provided with a second supporting surface (131) on the conveying belt (20), and the second supporting surface (131) is parallel to the second plane.

7. A self-adapting assistive mechanism according to claim 6, wherein, The distance between the second roller (220) and the third roller (230) is greater than the distance between the first roller (210) and the second roller (220).

8. The self-adapting assistive mechanism of claim 1, wherein, The frame (100) is provided with a limiting part (140) which is used for abutting against external equipment to limit the rotation angle of the frame (100) relative to the external equipment.

9. The adaptive assist mechanism of claim 1, wherein, ​ 10. A material conveying device, characterized in that The conveying platform (40), the rack (10) and the conveying belt (20) are included, the rack (10) is provided with the transmission roller (30), the transmission roller (30) is used to guide the conveying belt (20) to convey along the preset path; Further including the adaptive auxiliary mechanism of any one of claims 1-9, the conveying belt (20) is driven in cooperation with the first roller (210), the second roller (220) and the third roller (230), the rack (10) is rotatably connected with the fixed shaft (300), the first roller (210), the second roller (220) and the third roller (230) are located above the conveying platform (40), and the conveying area for the material passing between the part of the conveying belt (20) between the second roller (220) and the third roller (230) and the conveying platform (40).

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