Straw pretreatment device

Abstract

The utility model discloses a straw pretreatment device, relates to straw treatment technical field, including the rack, the top of rack is fixedly installed with the box, the both sides of inside upper end of box are rotatingly connected with feed roller, the outer surface of feed roller is equidistantly and annularly provided with tooth space. By the adoption of the structure, the driving motor is started to drive the first gear and the second gear to rotate synchronously, the two feeding rollers are promoted to rotate synchronously, straw is placed into the box body, the feeding rollers convey the straw to the bottom of the box body through friction force, the electric push rod is triggered to push out the straw, meanwhile, the first gear drives the second gear, and the straw is fed into the box body. The rotating shaft and the fixing plate are driven to rotate, the blanking cutter moves up and down through rotating connection of the connecting rod and the linkage plate, the movable block slides in the guide rail to guarantee stable operation of the blanking cutter, linkage of multiple components is achieved through a single motor in the driving design, complex driving control is avoided, and equipment loss and cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to straw processing technical field, especially relates to a straw pretreatment device. BACKGROUND

[0002] In the field of comprehensive utilization of agricultural resources, straw is broken into substrate discs as an innovative and environmentally friendly measure, which is increasingly concerned. The straw substrate disc takes crop straw such as corn and wheat as the main raw material, and its preparation process covers multiple processes such as collection, cutting, crushing, adding additives, fermentation, and pressing. Because the natural length of straw is not conducive to subsequent processing, the cutting link is particularly critical. It needs to be cut into several centimeters to tens of centimeters to facilitate efficient crushing and ensure the uniformity of the crushed particles, laying a foundation for the subsequent production of high-quality substrate discs. The substrate discs produced are widely used in horticultural cultivation, seedling raising, and other aspects, and can provide stable support and necessary nutrients for plant growth.

[0003] To achieve efficient cutting of straw, many technical solutions have emerged. For example, the wheat straw pretreatment cutting device disclosed in Chinese patent No. "CN207969399U" constructs a main structure through a connecting bracket, and components such as a straw sliding bucket, a push plate, a cutting blade, and an adjusting baffle work together. The use of an electric telescopic rod and a motor realizes straw pushing, cutting, and cutting length adjustment, which to some extent improves the convenience and accuracy of straw cutting.

[0004] However, in-depth analysis of the performance of the device in actual production application shows that its limitations are significant. From the perspective of equipment stability, the device relies on the coordinated work of multiple electronic components. The cutting knife blade is driven to move up and down by an electric push rod to complete the cutting. In the continuous operation process, the electric push rod needs to be frequently started and stopped, which easily leads to premature damage of key electronic components such as motors and controllers due to current impact and mechanical fatigue, significantly shortening the service life of the equipment and increasing the frequency of equipment maintenance and replacement. From the cost perspective, on the one hand, the high maintenance cost caused by frequent equipment damage; on the other hand, the multiple motor driving mode not only increases power consumption and electricity cost, but also requires a large number of wires to be arranged in the production site, which is time-consuming and labor-intensive and requires additional labor and time cost. Meanwhile, wire arrangement also increases safety hazards. In addition, the combination of complex electronic components increases the difficulty of equipment assembly and debugging, and requires higher professional skills of operators, further limiting its large-scale popularization and application. In view of these deficiencies in existing straw cutting technology, an innovative, efficient, and cost-controllable improvement scheme is urgently needed. UTILITY MODEL CONTENTS

[0005] In view of the problems mentioned in the background art, the purpose of the utility model is to provide a straw pretreatment device to solve the problem of high cost during application of the prior art.

[0006] The above technical purpose of the utility model is realized through the following technical scheme.

[0007] A straw pretreatment device, comprising a rack, a box body is fixedly installed on the top of the rack, upper ends of the inside of the box body are rotatably connected with feeding rollers, tooth grooves are arranged on the outer surfaces of the feeding rollers at equal intervals in a ring shape, the feeding rollers are connected through the tooth grooves, a collecting mechanism is fixedly installed on one side of the rack, a pushing assembly is fixedly installed on the side, away from the collecting mechanism, of the box body, a driving mechanism is fixedly installed on the side, away from the pushing assembly, of the box body, the output end of the driving mechanism is connected with the outer end of the feeding roller, and a cutting discharging frame is arranged on the side, close to the rack and the driving mechanism, of the box body.

[0008] The driving mechanism comprises a first gear, a concave frame, a cutting assembly and a second gear, the first gear is rotatably connected to the front side of the upper end of the side, close to the collecting mechanism, of the box body, the second gear is rotatably connected to the middle part of the upper end of the side, close to the collecting mechanism, of the box body, the first gear and the second gear are connected in meshing mode, the concave frame is fixedly installed on the upper end of the side, close to the collecting mechanism, of the box body, the concave frame covers the outer side of the first gear, a driving motor is fixedly installed on the outer side of the concave frame, the output end of the driving motor is fixedly connected through the concave frame and the outer side of the first gear, and the cutting assembly is arranged on the lower end of the side, close to the concave frame, of the box body.

[0009] As a preferred technical scheme, the cutting assembly comprises a guide rail, the guide rail is fixedly installed on the lower end of the side, close to the first gear, of the box body, the outer side of the first gear is connected with one end of the feeding roller, a movable block is slidably connected in the guide rail, a connecting rod is fixedly installed on the outer side of the movable block, a linkage plate is rotatably connected to the outer end of the connecting rod, a fixed plate is rotatably connected to the top of the linkage plate, a rotating shaft is fixedly installed on the back of the fixed plate, the end of the rotating shaft is fixedly connected with the outer side of the second gear, a bent rod is fixedly installed on the bottom of the connecting rod, and a punching cutter is fixedly installed on the bottom of the bent rod.

[0010] As a preferred technical scheme, the pushing assembly comprises a fixed seat, the fixed seat is fixedly installed on the lower end of the side, away from the collecting mechanism, of the box body, an electric push rod is fixedly installed on the inner side of the fixed seat, a pushing plate is fixedly installed on the output end of the electric push rod through the fixed seat, and the pushing plate is slidably connected in the inside of the box body.

[0011] As a preferred technical scheme, the collecting mechanism comprises a base, the base is fixedly installed on the side, close to the cutting discharging frame, of the rack, a collecting frame is slidably connected in the inside of the base, and the collecting frame is arranged below the cutting discharging frame.

[0012] Preferably, the collecting frame is fixedly installed with magnetic plates on the upper ends of two sides, and is internally magnetically connected with the base through the magnetic plates.

[0013] Preferably, the collecting frame is fixedly installed with a bridge handrail in the middle of the outer side, and the outer surface of the bridge handrail is fixedly connected with an anti-skid handrail cover.

[0014] Preferably, the collecting frame is fixedly installed with universal balls at the bottom of two sides in linear arrangement at equal intervals, and the base is fixedly connected with anti-skid foot pads at four corners.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] Firstly, the collecting mechanism is adopted, so that when working, the operator pushes the collecting frame provided with universal balls at the bottom, and the universal balls are rolled to reduce the friction force, so that the collecting frame can be easily pushed into the inner side of the base, and after reaching the designated position, the magnetic plates on the base quickly adsorb the collecting frame to realize stable installation.

[0017] Secondly, the driving mechanism is arranged, so that during use, the driving motor can be started to drive the first gear to rotate, the second gear is synchronously rotated due to the meshing of the first gear and the second gear, the first gear drives the feeding roller, the two feeding rollers are synchronously rotated through the meshing of the gear grooves, the straw is put into the box, the feeding roller utilizes the friction force to convey the straw to the bottom of the box, the electric push rod is triggered to push out the straw, at the same time, the first gear drives the second gear to drive the rotating shaft and the fixed plate to rotate, the punching cutter is displaced up and down through the rotating connection of the connecting rod and the linkage plate, the sliding of the movable block in the guide rail ensures the stable operation of the punching cutter, and the single motor is used to realize the linkage of multiple components, so that the complex driving control is avoided, and the equipment loss and cost are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic view of the utility model;

[0019] Figure 2 is the top view structure schematic view of the utility model;

[0020] Figure 3 is the collecting mechanism split state bottom view structure schematic view of the utility model;

[0021] Figure 4 is the collecting mechanism split state top view structure schematic view of the utility model;

[0022] Figure 5 is a driving mechanism amplification structure schematic view of the utility model.

[0023] Reference: 1, rack; 2, box; 3, feeding roller; 4, tooth slot; 5, collection mechanism; 51, base; 52, collection frame; 53, magnetic plate; 54, bridge handrail; 55, universal ball; 6, push assembly; 61, fixed seat; 62, electric push rod; 63, push plate; 7, driving mechanism; 71, first gear; 72, concave frame; 73, cutting assembly; 731, guide rail; 732, movable block; 733, connecting rod; 734, linkage plate; 735, fixed plate; 736, rotating shaft; 737, bending rod; 738, blanking cutter; 74, second gear; 75, driving motor; 8, cutting discharge frame. DETAILED DESCRIPTION

[0024] Embodiment

[0025] Reference Figures 1 to 5 The straw pretreatment device of the embodiment comprises a rack 1, a box 2 is fixedly installed on the top of the rack 1, feeding rollers 3 are rotatably connected to the two sides of the inner upper end of the box 2, tooth slots 4 are arranged at equal intervals in a ring shape on the outer surface of the feeding rollers 3, the feeding rollers 3 are connected through the tooth slots 4, a collection mechanism 5 is fixedly installed on one side of the rack 1, a push assembly 6 is fixedly installed on the side, away from the collection mechanism 5, of the box 2, a driving mechanism 7 is fixedly installed on the side, away from the push assembly 6, of the box 2, the output end of the driving mechanism 7 is connected with the outer end of the feeding roller 3, and a cutting discharge frame 8 is arranged on the side, close to the rack 1 and the driving mechanism 7, of the box 2.

[0026] The driving mechanism 7 comprises a first gear 71, a concave frame 72, a cutting assembly 73 and a second gear 74, the first gear 71 is rotationally connected to the front side of the upper end of the side of the box 2 close to the collecting mechanism 5, the second gear 74 is rotationally connected to the middle of the upper end of the side of the box 2 close to the collecting mechanism 5, the first gear 71 and the second gear 74 are in meshing connection, the concave frame 72 is fixedly installed on the upper end of the side of the box 2 close to the collecting mechanism 5, the concave frame 72 covers the outer side of the first gear 71, the outer side of the concave frame 72 is fixedly installed with a driving motor 75, the output end of the driving motor 75 is fixedly connected penetrating through the outer side of the concave frame 72 and the first gear 71, the cutting assembly 73 is arranged on the lower end of the side of the box 2 close to the concave frame 72, during use, the gantry 1 provides support for the whole, the box 2 at the top is the main space for straw processing, during work, the driving motor 75 in the driving mechanism 7 is started, the driving motor 75 drives the first gear 71 to rotate, since the first gear 71 is in meshing connection with the second gear 74, the second gear 74 rotates synchronously, the rotation of the first gear 71 drives the feeding roller 3 connected thereto to rotate, and the feeding rollers 3 are in meshing connection with each other through the tooth grooves 4 arranged in a ring shape at equal intervals on the outer surfaces, so that the two feeding rollers 3 rotate synchronously, after the straw is placed into the box 2, the feeding roller 3 rotates utilizes the friction force to convey the straw to the bottom of the box 2, at the same time, the pushing assembly 6 pushes the straw to the cutting discharge frame 8, and the cutting assembly 73 starts to work under the driving of the driving mechanism 7, so as to cut the straw coming out of the cutting discharge frame 8, the cut straw falls into the collecting mechanism 5 on the side of the gantry 1 to complete the collection, the whole device takes the driving motor 75 as a power source, and realizes the pretreatment of the straw through the cooperative operation of various components.

[0027] REFERENCE Figures 3-5The cutting assembly 73 comprises a guide rail 731 fixedly installed on one side of the box body 2 close to the lower end of the first gear 71, the outer side of the first gear 71 is connected with one end of the feeding roller 3, the inner side of the guide rail 731 is slidably connected with a movable block 732, the outer side of the movable block 732 is fixedly installed with a connecting rod 733, the outer end of the connecting rod 733 is rotatably connected with a linkage plate 734, the top of the linkage plate 734 is rotatably connected with a fixed plate 735, the back of the fixed plate 735 is fixedly installed with a rotating shaft 736, the end of the rotating shaft 736 is fixedly connected with the outer side of the second gear 74, the bottom of the connecting rod 733 is fixedly installed with a bent rod 737, and the bottom of the bent rod 737 is fixedly installed with a punching cutter 738. During use, the cutting assembly 73 of the straw pretreatment device is started by rotating the first gear 71 driven by the driving motor 75. Since the first gear 71 is connected with the feeding roller 3, the feeding roller 3 is driven to rotate to convey the straw. At the same time, the first gear 71 is engaged with the second gear 74 to drive the second gear 74 to rotate, thereby driving the rotating shaft 736 fixedly connected therewith to rotate. The rotating shaft 736 drives the fixed plate 735 to move in a circular motion. Since the fixed plate 735 is rotatably connected with the top of the linkage plate 734, the linkage plate 734 moves with the rotation of the fixed plate 735. Since the linkage plate 734 is rotatably connected with the outer end of the connecting rod 733, the linkage plate 734 drives the connecting rod 733 to move when the linkage plate 734 moves. The movable block 732 on the outer side of the connecting rod 733 slides in the guide rail 731, thereby ensuring the stability and directionality of the movement of the connecting rod 733. The bent rod 737 at the bottom of the connecting rod 733 moves with the connecting rod 733, thereby driving the punching cutter 738 to move up and down, so as to cut and pretreat the straw conveyed to the designated position.

[0028] Reference Figures 1-3The pushing assembly 6 comprises a fixed seat 61 fixedly installed at the lower end of the side of the box body 2 away from the collecting mechanism 5, the inner side of the fixed seat 61 is fixedly installed with an electric push rod 62, the output end of the electric push rod 62 is fixedly installed with a pushing plate 63 penetrating through the fixed seat 61, and the pushing plate 63 is slidingly connected to the inside of the box body 2. The collecting mechanism 5 comprises a base 51 fixedly installed on the side of the rack 1 close to the cutting discharge frame 8, and the inside of the base 51 is slidingly connected with a collecting frame 52 arranged below the cutting discharge frame 8. In the straw pretreatment device, the pushing assembly 6 and the collecting mechanism 5 work cooperatively. In the pushing assembly 6, the fixed seat 61 is stably installed at the lower end of the side of the box body 2 away from the collecting mechanism 5, thereby providing a firm support for the electric push rod 62. After the electric push rod 62 is started, the output end thereof performs a linear extension and retraction movement, penetrates through the fixed seat 61 and drives the pushing plate 63 to stably slide in the box body 2. When the straw is conveyed to the position close to the pushing plate 63 at the bottom of the box body 2, the pushing plate 63 is driven by the electric push rod 62 to push the straw towards the cutting discharge frame 8 opened on the box body 2. At the same time, the collecting mechanism 5 works. The base 51 is fixed on the side of the rack 1 close to the cutting discharge frame 8, and the collecting frame 52 can smoothly slide in the base 51. The straw pushed out of the cutting discharge frame 8 by the pushing plate 63 directly falls into the collecting frame 52 below. This design makes the straw pushed out of the box body 2 by the pushing assembly 6 seamlessly connected to the collecting mechanism 5 for collection, thereby realizing efficient cooperation between the material conveying and collecting links in the straw pretreatment process and guaranteeing the continuous and stable operation of the device.

[0029] REFERENCE Figures 1-4The collecting mechanism 5 comprises a base 51 fixedly installed on the side of the rack 1 close to the cutting discharge frame 8, a collecting frame 52 slidingly connected in the interior of the base 51, magnetic attraction plates 53 fixedly installed on the upper ends of the two sides of the collecting frame 52, bridge handrails 54 fixedly installed on the middle part of the outer side of the collecting frame 52, anti-skid handrail sleeves fixedly connected to the outer surfaces of the bridge handrails 54, universal balls 55 rotationally connected to the bottom of the collecting frame 52, and anti-skid foot pads fixedly connected to the four corners of the bottom of the rack 1. In the collecting mechanism 5 of the straw pretreatment device, the base 51 is stably installed on the side of the rack 1 close to the cutting discharge frame 8, serving as the basic support structure of the collecting mechanism 5. The collecting frame 52 can flexibly slide in the interior of the base 51, and is positioned just below the cutting discharge frame 8, ensuring that the straw pushed out of the cutting discharge frame 8 can accurately fall into the frame. The magnetic attraction plates 53 installed on the upper ends of the two sides of the collecting frame 52 are mutually attracted by magnetic force with the interior of the base 51, so that the collecting frame 52 remains stable during the collection of straw and displacement is avoided due to vibration or external force. Meanwhile, the collecting frame 52 can be easily taken out of the base 51 by overcoming the magnetic force when it is necessary to clean the straw. The bridge handrails 54 on the middle part of the outer side of the collecting frame 52 provide a convenient holding position for the operator. The anti-skid handrail sleeves on the outer surfaces further increase the friction, preventing the hands from slipping during operation and facilitating the operator to push the collecting frame 52. The universal balls 55 linearly arranged on the bottom of the collecting frame 52 can greatly reduce the friction with the ground when the collecting frame 52 is pushed, making the movement of the collecting frame 52 more smooth. The anti-skid foot pads fixedly connected to the four corners of the bottom of the rack 1 can effectively increase the friction between the rack 1 and the ground, preventing the rack 1 from displacing during the operation of the device and ensuring the stable operation of the entire straw pretreatment device.

[0030] Principle and advantages: In the actual operation of the device, the collecting mechanism 5 plays a crucial role. When it is necessary to collect the processed straw material, the operator can conveniently push the collecting frame 52 to move on the ground. The universal balls 55 arranged on the bottom of the collecting frame 52 can effectively reduce the friction with the ground during rolling, greatly improving the smoothness of the movement of the collecting frame 52. The operator can easily push the collecting frame 52 along the ground to the inside of the base 51. When the collecting frame 52 is accurately positioned, the magnetic attraction plates 53 on the base 51 will quickly attract the collecting frame 52 by magnetic force, achieving the stable fixation of the collecting frame 52 in the interior of the base 51. This design of magnetic attraction and movable installation makes the installation and disassembly of the collecting frame 52 extremely simple and fast, significantly improving the work efficiency of the device in the material collection link.

[0031] During the straw cutting operation, the electric push rod 62 is activated. The electric push rod 62 will smoothly push the push plate 63 to slide linearly at the bottom of the box 2 according to the preset operating program. The sliding of the push plate 63 can orderly push the straw material located at the bottom of the box 2 out from the cutting and discharge frame 8 on the box 2. The pushed straw material and the drive mechanism 7 work together to realize the automated and rapid punching and cutting operation. The whole process is completed in one go, which provides a strong guarantee for the efficient processing of straw and fully demonstrates the convenience and efficiency of this device in straw processing.

[0032] The drive mechanism 7 equipped in this device features a unique design concept and excellent operational performance. During operation, starting the drive motor 75 generates stable rotational power, driving the connected first gear 71 to rotate at high speed. Because the first gear 71 and the second gear 74 are precisely meshed, the rotational motion of the first gear 71 is accurately transmitted to the second gear 74, driving it to rotate synchronously. Simultaneously, the rotation of the first gear 71 also drives the feeding rollers 3 to rotate together. Notably, the feeding rollers 3 are meshed together through specially designed toothed grooves 4. When the first gear 71 drives one of the feeding rollers 3 to rotate, this toothed groove meshing transmission method ensures that both feeding rollers 3 rotate synchronously and stably.

[0033] During the preparation stage of straw cutting, the operator places the straw inside the box 2. At this time, the rotating feeding roller 3 will use the friction between its surface and the straw to smoothly transport the straw to the bottom of the box 2. When the straw is transported to a specific position at the bottom of the box 2, the electric push rod 62 will be triggered and started. The electric push rod 62 pushes the straw out of the cutting discharge frame 8 in an orderly manner, preparing for the subsequent cutting process.

[0034] In the straw cutting process, the first gear 71 drives the second gear 74 to rotate, and the rotation of the second gear 74 drives the rotating shaft 736 connected therewith to rotate synchronously, the rotation of the rotating shaft 736 further drives the fixed plate 735 to move in a circle, since the connecting rod 733 and the linkage plate 734 are connected in a rotating manner, and the linkage plate 734 is connected with the fixed plate 735 in a rotating manner, with the rotation of the fixed plate 735, the linkage plate 734 will move in a specific motion track, the linkage plate 734 further drives the connecting rod 733 to move up and down, and the movement of the connecting rod 733 finally enables the punching cutter 738 to realize stable up-and-down displacement, in the up-and-down displacement process of the punching cutter 738, the sliding of the movable block 732 in the guide rail 731 plays a key guiding and stabilizing role, ensuring that the punching cutter 738 can move up and down along a precise track to realize efficient punching cutting of the straw, it can be seen that the device is driven by a single power source of the driving motor 75, and through the precise cooperation between various linkage structures, not only can the feeding roller 3 stably convey the straw, but also can drive the punching cutter 738 to stably swing and punch up and down synchronously during the conveying process, this innovative driving design avoids the complexity of using multiple electronic devices for complex driving control, and eliminates the equipment loss and unstable operation problems caused by frequent start and stop of the motor, while ensuring efficient operation, the device greatly improves the overall application stability of the equipment, reduces the operation cost, and has extremely high popularization and application value.

Claims

1. A straw pre-treatment device comprising a gantry (1), characterized in that: The top of the rack (1) is fixedly installed with a box (2), both sides of the upper end of the inside of the box (2) are rotatably connected with feeding rollers (3), the outer surface of the feeding roller (3) is arranged with tooth grooves (4) at equal intervals in a ring shape, the feeding rollers (3) are connected through the tooth grooves (4), one side of the rack (1) is fixedly installed with a collecting mechanism (5), the side away from the collecting mechanism (5) of the box (2) is fixedly installed with a pushing assembly (6), the side away from the pushing assembly (6) of the box (2) is fixedly installed with a driving mechanism (7), the output end of the driving mechanism (7) is connected with the outer end of the feeding roller (3), the box (2) is provided with a cutting discharging frame (8) on the side close to the rack (1) and the driving mechanism (7). The driving mechanism (7) comprises a first gear (71), a concave frame (72), a cutting assembly (73) and a second gear (74), the first gear (71) is rotatably connected to the upper end of the side of the box (2) close to the collecting mechanism (5), the second gear (74) is rotatably connected to the upper end of the side of the box (2) close to the collecting mechanism (5), the first gear (71) and the second gear (74) are meshingly connected, the concave frame (72) is fixedly installed on the upper end of the side of the box (2) close to the collecting mechanism (5), the concave frame (72) covers the outer side of the first gear (71), the outer side of the concave frame (72) is fixedly installed with a driving motor (75), the output end of the driving motor (75) penetrates the outer side of the concave frame (72) and the first gear (71) and is fixedly connected, the cutting assembly (73) is arranged on the lower end of the side of the box (2) close to the concave frame (72).

2. The straw pretreatment device according to claim 1, characterized in that: The cutting assembly (73) comprises a guide rail (731), the guide rail (731) is fixedly installed on the lower end of the side of the box (2) close to the first gear (71), the outer side of the first gear (71) is connected with one end of the feeding roller (3), the inside of the guide rail (731) is slidably connected with a movable block (732), the outer side of the movable block (732) is fixedly installed with a connecting rod (733), the outer end of the connecting rod (733) is rotatably connected with a linkage plate (734), the top of the linkage plate (734) is rotatably connected with a fixed plate (735), the back of the fixed plate (735) is fixedly installed with a rotating shaft (736), the end of the rotating shaft (736) is fixedly connected with the outer side of the second gear (74), the bottom of the connecting rod (733) is fixedly installed with a bent rod (737), the bottom of the bent rod (737) is fixedly installed with a blanking cutter (738).

3. The straw pretreatment device according to claim 2, characterized in that: The pushing assembly (6) comprises a fixed seat (61), the fixed seat (61) is fixedly installed on the lower end of the side of the box (2) away from the collecting mechanism (5), the inner side of the fixed seat (61) is fixedly installed with an electric push rod (62), the output end of the electric push rod (62) penetrates the fixed seat (61) and is fixedly installed with a pushing plate (63), the pushing plate (63) is slidably connected in the inside of the box (2).

4. The straw pretreatment device according to claim 1, characterized in that: The collecting mechanism (5) comprises a base (51) fixedly installed on the gantry (1) near one side of the cutting discharge frame (8), and a collecting frame (52) slidably connected in the base (51), which is arranged below the cutting discharge frame (8).

5. The straw pretreatment device according to claim 4, characterized in that: Magnetic plates (53) are fixedly installed on the upper ends of the two sides of the collecting frame (52), and the collecting frame (52) is connected with the base (51) through the magnetic plates (53).

6. The straw pre-treatment device according to claim 5, characterized in that: A bridge handrail (54) is fixedly installed on the middle part of the outer side of the collecting frame (52), and an anti-skid handrail cover is fixedly connected to the outer surface of the bridge handrail (54).

7. The straw pre-treatment device according to claim 6, characterized in that: Universal balls (55) are rotationally connected to the bottom of the collecting frame (52) at equal intervals in a linear arrangement, and anti-skid foot pads are fixedly connected to the four corners of the bottom of the gantry (1).

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