Straw conveying device for preparing biogas through straw fermentation

Abstract

The invention belongs to the field of straw conveying equipment, and provides a straw conveying device for preparing biogas through straw fermentation, the straw conveying device comprises a rack, a handrail mechanism, universal walking wheels, a machine box and a conveyor, a dust cover is arranged on the upper half portion of the conveyor, and a feeding hopper is arranged on the feeding side, close to the conveyor, of the dust cover; the two sides of the conveyor are hinged to the machine box, a manual turnover mechanism is arranged at the position deviating from the hinged position, a half shaft coaxially connected with a driven part of the conveyor is arranged on the discharging side of the conveyor, and a driving wheel used for walking is arranged on the half shaft. And a shaft end cap for limiting the axial movement of the driving wheel is arranged at the end part of the half shaft. The device is reasonable in design, walking power and material conveying power are combined, transferring and adjusting are convenient, dustproof measures are taken, practicability is high, and the device is suitable for large-scale popularization.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of straw conveying equipment, and particularly relates to a straw conveying device for straw fermentation to produce biogas. BACKGROUND

[0002] Straw fermentation to produce biogas is a process of producing combustible gas (biogas) through microbial decomposition and metabolism under anaerobic conditions by using agricultural wastes such as straw, and is an important way to realize resource utilization of agricultural wastes. In a biogas project for a large amount of straw waste treatment, corresponding mechanical and automatic equipment is used to improve the treatment efficiency of straw, such as a straw dryer, a straw pulverizer, a straw conveyor and a biogas tank stirring device.

[0003] The straw conveyor can be divided into fixed type and movable type according to the installation mode. The movable straw conveyor, such as the raw material conveying mechanism for straw pellet fuel manufacturing disclosed in the Chinese utility model patent with the publication number CN213678620U, needs to be matched with a power equipment independent of the conveying power of the conveyor, and the manual transfer has the problem of low efficiency. Moreover, there is a dust problem in the conveying process. Since a dry fermentation workshop is used, the dry straw carries a large amount of dust. In addition to a large amount of dust generated in the crushing process, a large amount of dust is also raised when the crushed straw is poured onto the conveyor, which affects the working environment of the workshop. SUMMARY

[0004] The present application provides a straw conveying device for straw fermentation to produce biogas, which is reasonable in design, combines walking power with material conveying power, is convenient to transfer and adjust, has dust prevention measures and is highly practical.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is that the straw conveying device for straw fermentation to produce biogas provided by the present application comprises a rack, a supporting mechanism is arranged on the rear side of the rack, a plurality of pairs of universal walking wheels are arranged on the bottom of the rack and are spaced apart along the length direction of the rack, a machine box is arranged on the upper side of the rack, an inclined mounting opening is formed in the top of the machine box, and a conveyor is arranged in an inclined manner at the mounting opening. The upper half of the conveyor is provided with a dust cover, a feed hopper is arranged on the feed side of the conveyor close to the conveyor, the two sides of the conveyor are hinged to the machine box and a manual overturning mechanism is arranged at a position deviated from the hinge, a half shaft is coaxially connected to the driven part of the conveyor at the discharge side of the conveyor, a driving wheel for walking is arranged on the half shaft, and an axle end cap is arranged at the end of the half shaft to limit the axial movement of the driving wheel.

[0006] As preferred, the manual turnover mechanism comprises an L-shaped turnover arm, one end of which is hinged to the side of the conveyor, the other end of which extends obliquely upward in the direction of the hand supporting mechanism, a support seat is arranged at the turning position of the L-shaped mouth of the turnover arm, and a hydraulic jack is arranged at the driving end of the turnover arm and is mounted on the side of the cabinet through a fixing seat.

[0007] As preferred, the turnover arm is provided with a guide hole movably arranged with the support seat at the position close to the L-shaped mouth thereof, and a support shaft is arranged on the support seat and matched with the guide hole.

[0008] As preferred, the bottom of the support seat is provided with a support mouth matched with a support square tube arranged on the side of the cabinet, the support square tube is horizontally arranged and is provided with a plurality of connecting holes distributed along the length direction thereof on the side thereof, and the support square tube is connected with the support seat through two connecting members.

[0009] As preferred, the telescopic end of the hydraulic jack is nested with a shaft cylinder arranged at the end of the turnover arm, a hexagonal positioning rod is arranged at the center of the shaft cylinder and is matched with a positioning hole arranged on the cabinet.

[0010] As preferred, the cabinet is provided with an assembly mouth at the position deviated to the hand supporting mechanism, the assembly mouth is matched with the driving part of the conveyor in support, a clamping mouth is arranged in the middle of the assembly mouth, a clamping plate extending downward is arranged on the outside of the driving part of the conveyor, the lower half of the clamping plate is matched with the clamping mouth, a clamping hole is arranged on the side of the clamping plate, a pin tube corresponding to the clamping hole is arranged on the cabinet, and the pin tube is connected with the clamping hole through a clamping bolt.

[0011] As preferred, the rack comprises a pair of rectangular tubes arranged at the bottom thereof, the length direction of the rectangular tubes is consistent with the length direction of the rack, and an axle mechanism is movably inserted into the two rectangular tubes, the axle mechanism is used to support the front end position of the conveyor after turnover.

[0012] As preferred, the axle mechanism comprises a pair of insertion square tubes, the length of the insertion square tubes is greater than that of the rectangular tubes, and the end of the insertion square tubes deviated to the hand supporting mechanism is used to prevent the rack from tailing.

[0013] As preferred, the axle mechanism comprises a bracket connected with the front ends of the two insertion square tubes, the bracket comprises a vertical U-shaped section with the opening upward and a horizontal U-shaped section with the opening toward the driving wheel, the horizontal U-shaped section is arranged in parallel above the rectangular tube, and a locking bolt connected with the conveyor is arranged on the vertical U-shaped section and the horizontal U-shaped section.

[0014] As preferred, a support hopper is arranged at the bottom of the conveyor and close to the driving wheel, the cross section of the support hopper is U-shaped, the bottom of the support hopper is supported by the top surface of the rectangular tube, and the back surface of the support hopper is in close contact with the inner side of the horizontal U-shaped section.

[0015] Compared with the prior art, the application has the advantages and positive effects that: The straw conveying device for straw fermentation for biogas provided by the application has the following advantages: the protective cover arranged above the conveying device can prevent dust, the feeding hopper provides a straw feeding port after crushing, the output side of the conveying device can be placed on the ground by controlling the horizontal movement of the manual overturning mechanism, the driving wheel is used as a support structure, the driving wheel is powered by the power source of the conveying device, the device can move automatically, which is beneficial to reduce the cost and the difficulty of manually pushing the device, the device has reasonable design, combines the walking power with the material conveying power, is convenient to transfer and adjust, has dust prevention measures, and has high practicability, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The working front view of the straw conveying device for straw fermentation for biogas; Figure 2 The working perspective view of the straw conveying device for straw fermentation for biogas; Figure 3 The working perspective view of the straw conveying device for straw fermentation for biogas in another direction; Figure 4 The walking front view of the straw conveying device for straw fermentation for biogas; Figure 5 The walking perspective view of the straw conveying device for straw fermentation for biogas; Figure 6 The Figure 4 The enlarged schematic view of the straw conveying device for straw fermentation for biogas at A; In the above figures: 1, frame; 2, supporting structure; 3, universal walking wheel; 4, machine box; 41, mounting port; 42, assembly port; 43, clamping port; 44, pin tube; 45, clamping bolt; 5, conveyor; 6, dust cover; 7, feeding hopper; 8, manual turnover mechanism; 81, turnover arm; 82, support seat; 83, hydraulic jack; 84, guide hole; 85, support shaft; 86, support port; 87, support square tube; 88, connecting hole; 89, connecting piece; 810, shaft cylinder; 811, hexagonal positioning rod; 9, half shaft; 10, driving wheel; 11, shaft end cap; 12, clamping plate; 121, clamping hole; 13, axle mechanism; 131, plug-in square tube; 132, bracket; 1321, vertical U-shaped section; 1322, horizontal U-shaped section; 133, locking bolt; 14, supporting hopper; 15, rectangular tube. DETAILED DESCRIPTION

[0018] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the following will further describe the present application with reference to the drawings and examples. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, the following will appear "up", "down", "left", "right" words, only indicate the same with the upper, lower, left, right direction of the drawing itself, and do not limit the structure.

[0019] In the following description, a number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in different ways from those described herein without departing from the present application, and therefore the present application is not limited to the specific embodiments disclosed in the following description.

[0020] Examples, such as Figures 1-6As shown, the straw conveying device for straw fermentation to produce biogas provided by the present application comprises a rack 1, a supporting handle mechanism 2 is arranged at the rear side of the rack 1, a plurality of pairs of universal walking wheels 3 are arranged at the bottom of the rack 1 and are spaced apart along the length direction of the rack 1, a machine box 4 is arranged at the upper part of the rack 1, an inclined installation opening 41 is formed at the top of the machine box 4, and a conveyor 5 is arranged at the installation opening 41 in an inclined manner. The universal walking wheels 3 are used for supporting the device, and have a brake structure so as to keep good stationary performance when the straw crushed materials are conveyed to the biogas tank. The conveyor 5 adopts a design of a side-mounted motor, is mounted at the side of a transmission box, and transmission chains and sprockets are arranged between the transmission boxes. The driving part of the conveyor 5 comprises a driving roller and a driving shaft, the driven part comprises a driven roller and a driven shaft, and the sprockets are arranged on the driving shaft and the driven shaft. The driving shaft is driven to rotate by the motor and drives the driven shaft to rotate. The conveyor belt or the conveying net is arranged on the driving roller and the driven roller. The straw crushed materials can be conveyed to the output side of the conveyor 5 through continuous operation, and then are poured into the biogas tank. On this basis, the upper half of the conveyor 5 is provided with a dust cover 6. The dust cover 6 is provided with a feeding hopper 7 at the feeding side close to the conveyor 5. The dust cover 6 is inverted and arranged above the conveying surface of the conveyor 5. The dust cover 6 is fixed on the transmission boxes of the conveyor 5 through sheet metal plates and screws at the two sides of the dust cover 6. The dust cover 6 is basically fully covered on the upper surface of the conveyor 5 except that the position of the feeding hopper 7 is kept open. Thus, the relative sealing performance of the conveyor 5 on the conveying path of the straw crushed materials can be improved, the amount of dust raised in the dry fermentation workshop process can be reduced, and the actual working environment quality of the workshop can be improved.

[0021] In order to improve the comprehensive utilization rate of the device, the two sides of the conveyor 5 are hinged to the machine box 4 and are provided with a manual overturning mechanism 8 at positions deviated from the hinge. The discharging side of the conveyor 5 is provided with a half shaft 9 coaxially connected with the driven part of the conveyor 5. The half shaft 9 is provided with a driving wheel 10 for walking. The end of the half shaft 9 is provided with an axle end cap 11 for limiting the axial movement of the driving wheel 10. The axle end cap 11 adopts a combination structure of a nut and a nut cap for ensuring the rotation quality of the driving wheel 10 in the driving mode. In this way, the manual overturning mechanism 8 is controlled to move in a plane until the output side of the conveyor 5 falls to the ground. The driving wheel 10 serves as a supporting structure for the ground, and other pairs of universal walking wheels 3 serve as steering wheels. The driving wheel 10 can rotate coaxially with the driven shaft of the conveyor 5 through the half shaft 9. Therefore, the power source of the conveyor 5 inputs power to the driving wheel 10, combines the walking power with the material conveying power, and enables the device to obtain motorized walking power. The worker holds the supporting handle mechanism 2 to appropriately control, which is beneficial to reduce the overall cost of the device and the difficulty of manually pushing the device.

[0022] In order to improve the operation performance of the manual turnover mechanism 8, the manual turnover mechanism 8 provided by the present application comprises an L-shaped turnover arm 81, one end of the turnover arm 81 is hinged to the side of the conveyor 5, the other end of the turnover arm 81 is inclined and extends upward in the direction of the supporting arm mechanism 2, a support seat 82 is arranged at the turning position of the L-shaped mouth of the turnover arm 81, a hydraulic jack 83 is arranged at the driving end of the turnover arm 81, the hydraulic jack 83 is installed on the side of the machine box 4 through a fixed seat, and the mounting end of the hydraulic jack 83 remains relatively stationary with the fixed seat and the machine box 4. Among them, the turnover arm 81 adopts L-shaped design, on the one hand, it can give the device and the side of the biogas tank as much working distance as possible, and ensure that the vertical direction of the output side of the conveyor 5 is in positive orientation with the biogas tank; on the other hand, it makes full use of the space on the side of the machine box 4 to provide a reasonable extension connection point for the hydraulic jack 83 and the turnover arm 81, and reduces the necessary assembly space of the hydraulic jack 83 and the turnover arm 81; on the other hand, by using the turnover arm 81 as the intermediate structure of the hydraulic jack 83 and the conveyor 5, the necessary extension length of the hydraulic jack 83 can be reduced, and the necessary working length of the hydraulic jack 83 can be shortened by the connecting rod movement of the turnover arm 81, the support seat 82, the hydraulic jack 83, the conveyor 5 and the machine box 4, which is beneficial to reduce the cost.

[0023] The hydraulic jack 83 is provided with a pipe sleeve structure that can be inserted into the rocker arm on the side of its cylinder body, and the extension end of the hydraulic jack 83 can be made to produce extension and retraction action by manually operating the rocker arm; the hydraulic jack 83 can push up the hinged position of the turnover arm 81 and the conveyor 5 through extension action, the conveyor 5 is turned around its hinged position with the machine box 4, until the driving part of the conveyor 5 is stably seated on the machine box 4, and the conveyor 5 as a conveying material device can discharge the material from the output end into the biogas tank; the hydraulic jack 83 can pull down the hinged position of the turnover arm 81 and the conveyor 5 through retraction action, the conveyor 5 is reversely turned around its hinged position with the machine box 4, until the driving wheel 10 falls to the ground and the end of the conveyor 5 is elevated to avoid scratching the ground, thereby the output side function of the conveyor 5 can be switched to the walking function, and the comprehensive utilization rate of the device is improved.

[0024] Further, the turnover arm 81 is provided with a guide hole 84 relative to the support base 82 near the L-shaped opening of the turnover arm 81, and the support base 82 is provided with a support shaft 85 matched with the guide hole 84. Wherein, the support base 82 and the cabinet 4 constitute a clamping of the turnover arm 81, and the support shaft 85 is used as a anti-off structure of the turnover arm 81 and a guide structure of the planar movement of the turnover arm 81, which provides a certain activity allowance for the turnover arm 81, including the inclined lifting, inclined retraction and rotation allowance, which is beneficial to improve the pushing efficiency and pulling efficiency of the hydraulic jack 83 to the turnover arm 81, and can effectively meet the requirements of the device for switching different modes of the conveyor 5; in the static state of the hydraulic jack 83, the force arm from the guide hole 84 to the rotation center of the turnover arm 81 and the hydraulic jack 83 is unchanged, and the installation angle of the hydraulic jack 83 is also unchanged, so that the support angle of the turnover arm 81 to the conveyor 5 will not change randomly, so as to improve the reliability and safety of the conveyor 5 in different modes.

[0025] In order to improve the utilization rate of the manual turnover mechanism 8, the bottom of the support base 82 is provided with a support opening 86 matched with a support square tube 87 arranged on the side of the cabinet 4, the support square tube 87 is horizontally arranged and is provided with a plurality of connection holes 88 distributed along the length direction on the side thereof, and the support square tube 87 is connected with the support base 82 through two connecting pieces 89, which are preferably screws / bolts. Wherein, the support square tube 87 is used as a mounting basis of the support base 82 on the side of the cabinet 4, and a plurality of connection holes 88 are provided for adjusting the front and rear positions of the support base 82, and the actual matching position of the support base 82 and the support square tube 87 is locked through the connecting pieces 89, which can meet the support requirements of the support base 82 to the manual turnover mechanism 8, and also provides a linkage node matched with the movement requirements for the linkage system composed of the turnover arm 81, the support base 82, the hydraulic jack 83, the conveyor 5 and the cabinet 4, thereby improving the actual utilization rate of the device.

[0026] In order to improve the stability and reliability of the linkage system of the turnover arm 81, the support seat 82, the hydraulic jack 83, the conveyor 5 and the machine box 4 in the static state, the telescopic end of the hydraulic jack 83 is nested with the shaft cylinder 810 arranged at the end of the turnover arm 81, the center of the shaft cylinder 810 is provided with a hexagonal positioning rod 811, the hexagonal positioning rod 811 is matched with a hexagonal positioning hole arranged on the machine box 4, the actual position of the positioning hole of the conveyor 5 in different modes is different, so the number of the positioning hole is at least two, one positioning hole is the positioning hole of the conveyor 5 in the material conveying mode, and the other positioning hole is the positioning hole of the conveyor 5 in the walking mode. The length of the shaft cylinder 810 is greater than the thickness of the turnover arm 81 at other positions, and the part of the shaft cylinder 810 exceeding the thickness of the turnover arm 81 is used for connecting the hole structure of the telescopic end of the hydraulic jack 83, the hole structure and the shaft cylinder 810 form a set of rotating pairs, which is also the shaft joint of the turnover arm 81 and the hydraulic jack 83, so as to meet the continuity of the planar motion of the turnover arm 81 driven by the hydraulic jack 83. The hexagonal positioning rod 811 is connected with the shaft joint of the manually turned mechanism 8 after being adjusted at different angles, and the machine box 4 is synchronously connected, so as to serve as a safety mechanism to prevent the linkage system of the turnover arm 81, the support seat 82, the hydraulic jack 83, the conveyor 5 and the machine box 4 from generating obvious planar motion in the static state, and to further ensure the working performance of the equipment.

[0027] In order to improve the working stability of the conveyor 5 when conveying materials, the machine box 4 is provided with an assembly opening 42 at the position deviated from the hand supporting mechanism 2, the assembly opening 42 is supported with the driving part of the conveyor 5, the middle of the assembly opening 42 is provided with a clamping opening 43, the outer side of the driving part of the conveyor 5 is provided with a downward extending clamping plate 12, the lower half of the clamping plate 12 is matched with the clamping opening 43, the side of the clamping plate 12 is provided with a clamping hole 121, the machine box 4 is provided with a pin tube 44 corresponding to the clamping hole 121, and the pin tube 44 is connected with the clamping hole 121 through a clamping bolt 45. The clamping plate 12 is welded at the tail of the transmission box of the conveyor 5, and the synchronous relationship with the conveyor 5 is established; when the conveyor 5 is driven by the manually turned mechanism 8 and seated on the machine box 4, the two sides of the clamping plate 12 are tightly attached to the opening edge of the clamping opening 43, the clamping opening 43 provides clamping action on the clamping plate 12, provides at least two direction limiting pairs, and the clamping bolt 45 is used to connect the clamping hole 121 and the pin tube 44, which is different from the limiting pairs on the two sides of the clamping plate 12, the clamping bolt 45 further prevents the relative motion between the clamping plate 12 and the machine box 4 from the rotation free block, so as to improve the stability and reliability of the conveyor 5 when conveying materials.

[0028] In order to improve the structural reliability of the whole device after the conveyor 5 is switched to the running mode, the rack 1 provided by the present application comprises a pair of rectangular tubes 15 arranged at the bottom of the rack 1, the length direction of the rectangular tubes 15 is consistent with the length direction of the rack 1, and the axle mechanism 13 is movably inserted into the two rectangular tubes, and the axle mechanism 13 is used to support the front end position of the conveyor 5 after being turned over. The axle mechanism 13 is pulled out from the rectangular tube in a pulling manner until it establishes a supporting relationship with the conveyor 5 after being turned over, and the virtual axle is materialized, the connection strength between the rack 1 and the conveyor 5 is ensured by using the axle mechanism 13, and the chassis system with a certain span is established; and the distribution level of the axle mechanism 13 is low, and the axle mechanism 13 will not affect the connection between the device and the biogas tank in the original position.

[0029] Specifically, the axle mechanism 13 provided by the present application comprises a pair of inserted square tubes 131, the length of the inserted square tube 131 is greater than the length of the rectangular tube 15, and one end of the inserted square tube 131 is deviated towards the handrail mechanism 2 to prevent the rack 1 from tailing. The rack 1 and the cabinet 4 are both made of steel structure and have certain mass and structural strength, so the probability of tailing and head lifting is relatively low; in order to improve the safety of the device, the axle mechanism 13 is inserted at the original insertion position, one end of the inserted square tube 131 is extended from the end of the rectangular tube 15, the extension direction is in the direction of the handrail mechanism 2, and in the process of pushing the conveyor 5 into position, the end of the inserted square tube 131 can be used as a brake structure for the rack 1 to prevent the tailing from further expanding.

[0030] Further, the axle mechanism 13 provided by the present application comprises a bracket 132 connected to the front end of the two inserted square tubes 131, the bracket 132 comprises a vertical U-shaped section 1321 with an opening facing upwards and a horizontal U-shaped section 1322 with an opening facing the driving wheel 10, the horizontal U-shaped section is arranged in parallel above the rectangular tube 15, and a locking bolt 133 connected with the conveyor 5 is arranged on the vertical U-shaped section 1321 and the horizontal U-shaped section 1322. The bracket 132 can be held on both sides of the conveyor 5, and a plurality of bolt sites are provided in space by the horizontal U-shaped section 1322 and the vertical U-shaped section 1321, and the connection reliability between the axle mechanism 13 and the conveyor 5 is effectively ensured by connecting the conveyor 5 and the bracket 132 by using the locking bolt 133, so as to improve the stability and safety of the device in the running mode.

[0031] As Figure 3 , Figure 4 and Figure 6As shown, the bottom of the conveyor 5 and the position close to the driving wheel 10 are provided with a supporting hopper 14, the cross section of the supporting hopper 14 is U-shaped and the bottom thereof is supported and matched with the top surface of the rectangular tube 15, the back surface of the supporting hopper 14 is closely contacted with the inner side of the horizontal U-shaped section 1322. On the one hand, the supporting hopper 14 can be matched with the dust cover 6 to be protected from the upper and lower surfaces of the conveyor 5, so that the materials are discharged as much as possible at the output side of the conveyor 5; on the other hand, the supporting hopper can be matched with the unfolded axle mechanism 13 to complete the multi-point supporting and establish a stable and reliable assembly connection relationship with the axle mechanism 13; on the other hand, the output side of the conveyor 5 is ensured to have a certain ground clearance, so that the device has good passability in the walking mode.

[0032] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can use the disclosed technical content to make changes or modifications to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution content of the present application and in accordance with the technical essence of the present application shall still fall within the protection scope of the technical solution of the present application.

Claims

1. A straw conveying device for straw fermentation to produce biogas, comprising a frame, a supporting mechanism is arranged at the back side of the frame, a plurality of pairs of universal walking wheels are arranged at the bottom of the frame and are spaced apart along the length direction of the frame, a machine box is arranged on the frame, an inclined installation opening is formed at the top of the machine box, and a conveyor is arranged at the installation opening in an inclined manner, characterized in that, The upper half of the conveyor is provided with a dust cover, which is provided with a feeding hopper near the feeding side of the conveyor, the two sides of the conveyor are hinged with the machine box and provided with a manual turnover mechanism at a position deviated from the hinge, and the discharging side of the conveyor is provided with a half shaft coaxially connected with the driven part of the conveyor, which is provided with a driving wheel for walking, and the end of the half shaft is provided with an axle end cap for limiting the axial movement of the driving wheel.

2. The straw conveying device for straw fermentation for biogas production according to claim 1, characterized in that, The manual turnover mechanism comprises an L-shaped turnover arm, one end of which is hinged with the side of the conveyor, the other end of which is inclined to extend upward in the direction of the supporting mechanism, and the turnover arm is provided with a support seat at the turning position of the L-shaped mouth, and the driving end of the turnover arm is provided with a hydraulic jack mounted on the side of the machine box through a fixing seat.

3. The straw conveying device for straw fermentation biogas production according to claim 2, characterized in that, The turnover arm is provided with a guide hole movably connected with the support seat near the L-shaped mouth, and the support seat is provided with a support shaft matched with the guide hole.

4. The straw conveying device for straw fermentation for biogas production according to claim 3, characterized in that, The bottom of the support seat is provided with a support hole matched with a support square tube provided on the side of the machine box, the support square tube is horizontally arranged and provided with a plurality of connecting holes distributed along the length direction of the support square tube, and the support square tube is connected with the support seat through two connecting members.

5. The straw conveying device for straw fermentation for biogas production according to claim 4, characterized in that, The telescopic end of the hydraulic jack is nested with a shaft cylinder provided at the end of the turnover arm, the center of the shaft cylinder is provided with a hexagonal positioning rod matched with a positioning hole provided on the machine box.

6. The straw conveying device for straw fermentation for biogas production according to claim 1, characterized in that, The machine box is provided with an assembly opening deviated from the supporting mechanism, the assembly opening is matched with the driving part of the conveyor, the middle of the assembly opening is provided with a clamping hole, the outer side of the driving part of the conveyor is provided with a clamping plate extending downward, the lower half of the clamping plate is matched with the clamping hole, the side of the clamping plate is provided with a clamping hole, and the machine box is provided with a pin tube matched with the clamping hole, and the pin tube is connected with the clamping hole through a clamping bolt.

7. The straw conveying device for straw fermentation biogas production according to claim 1, characterized in that, The rack comprises a pair of rectangular tubes arranged at the bottom of the rack, the length direction of the rectangular tubes is consistent with the length direction of the rack, and a vehicle bridge mechanism is movably inserted into the two rectangular tubes, and the vehicle bridge mechanism is used to support the front end position of the conveyor after turnover.

8. The straw conveying device for straw fermentation biogas production according to claim 7, characterized in that, The vehicle bridge mechanism comprises a pair of insertion square tubes, the length of the insertion square tubes is greater than that of the rectangular tubes, and the end deviated from the supporting mechanism is used to prevent the rack from tailing.

9. The straw conveying device for straw fermentation biogas production according to claim 8, characterized in that, The vehicle bridge mechanism comprises a bracket connected with the front ends of the two insertion square tubes, the bracket comprises a vertical U-shaped section with an opening upward and a horizontal U-shaped section with an opening toward the driving wheel, the horizontal U-shaped section is arranged in parallel above the rectangular tube, and a locking bolt connected with the conveyor is arranged on the vertical U-shaped section and the horizontal U-shaped section.

10. The straw conveying device for straw fermentation for biogas production according to claim 9, characterized in that, The bottom of the conveyor is provided with a support hopper near the driving wheel, the cross section of the support hopper is U-shaped, the bottom of the support hopper is matched with the top surface of the rectangular tube, and the back surface of the support hopper is in close contact with the inner side of the horizontal U-shaped section.

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