CN113682748A

CN113682748A - Frequency conversion multiaxis screw conveyer

Info

Publication number: CN113682748A
Application number: CN202111255733.6A
Authority: CN
Inventors: 张国锋
Original assignee: Nantong Haichuang Machinery Manufacturing Co ltd
Current assignee: Nantong Haichuang Machinery Manufacturing Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2021-11-23

Abstract

The invention relates to the technical field of screw conveyors and discloses a variable-frequency multi-shaft screw conveyor which comprises a movable support, wherein a U-shaped pipe with an open top is arranged at the top of the movable support, a discharge hole is formed in one side of the U-shaped pipe, a top plate is fixedly connected to the top of the U-shaped pipe, a feed hopper communicated with the inside of the U-shaped pipe is fixedly connected to one side, away from the discharge hole, of the top plate, two flood dragon conveying rods which are in left-right axial direction and are distributed up and down are rotatably connected in the U-shaped pipe through bearings, and a rotating assembly used for enabling the two flood dragon conveying rods to rotate synchronously is arranged on the U-shaped pipe. According to the invention, the rotating assembly is arranged on the U-shaped pipe, so that the two flood dragon conveying rods can synchronously operate on the U-shaped pipe to convey materials to the discharge port together, the conveying amount is obviously increased compared with that of a traditional single-shaft conveyor in the conveying mode, and the speed of conveying the materials can be effectively increased.

Description

Frequency conversion multiaxis screw conveyer

Technical Field

The invention belongs to the technical field of screw conveyors, and particularly relates to a variable-frequency multi-shaft screw conveyor.

Background

The screw conveyer is a machine which utilizes a motor to drive a screw to rotate and push materials so as to realize the conveying purpose. The conveying device can convey horizontally, obliquely or vertically, and has the advantages of simple structure, small cross section area, good sealing property, convenience in operation, easiness in maintenance, convenience in closed transportation and the like. The spiral conveyor is divided into a shaft spiral conveyor and a shaftless spiral conveyor in the conveying form, and is divided into a U-shaped spiral conveyor and a tubular spiral conveyor in the appearance. The shaftless screw conveyor is suitable for dry powder materials and small particle materials without viscosity (such as cement, fly ash, lime, grains and the like), while the shaftless screw conveyor is suitable for materials with viscosity and easy winding. The working principle of the screw conveyer (such as sludge, biomass, garbage and the like) is that a rotating screw blade pushes materials to convey the materials by the screw conveyer, and the force which prevents the materials from rotating together with the screw conveyer blade is the self weight of the materials and the frictional resistance of a shell of the screw conveyer to the materials. The surface type of the spiral blade welded on the rotating shaft of the spiral conveyor is solid surface type, belt surface type, blade surface type and other types according to different conveyed materials. The end of the screw shaft of the screw conveyor in the material moving direction is provided with a thrust bearing to provide axial counterforce to the screw along with the material, and when the screw shaft is longer, a middle hanging bearing is added.

The mechanism of unipolar spiral is adopted to present screw conveyer more, and its speed of transporting the material of conveyer of unipolar spiral is slower however, is limited to conditions such as production space, can't guarantee the feed volume under the many circumstances of unipolar spiral, if need reach same transport volume requirement then consuming time more, brings the inconvenience in the use of giving reality, consequently designs a frequency conversion multiaxis screw conveyer and solves this kind of problem very necessarily.

Disclosure of Invention

The invention aims to: in order to solve the problems in the background art, the invention provides a variable-frequency multi-shaft screw conveyor.

In order to achieve the purpose, the invention provides the following technical scheme: a variable-frequency multi-shaft spiral conveyor comprises a movable support, wherein a U-shaped pipe with an open top is arranged at the top of the movable support, a discharge hole is formed in one side of the U-shaped pipe, a top plate is fixedly connected to the top of the U-shaped pipe, a feed hopper communicated with the inside of the U-shaped pipe is fixedly connected to one side, far away from the discharge hole, of the top plate, two flood dragon conveying rods which are axially arranged in the left-right direction and are distributed up and down are rotatably connected in the U-shaped pipe through bearings, a rotating assembly used for enabling the two flood dragon conveying rods to synchronously rotate is arranged on the U-shaped pipe, one end, far away from the discharge hole, of each flood dragon conveying rod penetrates through the U-shaped pipe and extends to the outside of the U-shaped pipe, each rotating assembly comprises a first chain wheel and a second chain wheel, the first chain wheel is fixedly sleeved on one side, far away from the U-shaped pipe, of one flood dragon conveying rod is fixedly sleeved on one side, far away from the U-shaped pipe, a chain is wound between the first chain wheel and the second chain wheel through chain teeth, and a driving assembly used for driving one flood dragon conveying rod to rotate is arranged on the U-shaped pipe.

Furthermore, the driving assembly comprises a driving bevel gear which is rotatably arranged on the U-shaped pipe and is vertical to the axial direction of the flood dragon conveying rod, one end of the flood dragon conveying rod, which is located outside the U-shaped pipe, is fixedly connected with a driven bevel gear which is meshed with the driving bevel gear, and a driving piece which is used for driving the driving bevel gear to rotate is arranged on the U-shaped pipe.

Furthermore, the driving part comprises a first motor fixedly installed on the surface of the U-shaped pipe through a support plate, the axial direction of an output shaft of the first motor is perpendicular to the flood dragon conveying rod, and the tail end of the output shaft of the first motor is fixedly connected to the end face of the driving bevel gear through a coupler.

Furthermore, one side of the top of the movable support is fixedly connected with two symmetrical fixed plates in the vertical direction, one side, close to each other, of each fixed plate is rotatably connected with a rotating shaft perpendicular to the fixed plate through a bearing, the rotating shafts are located on the same central axis and are two ends, close to each other, of the rotating shafts are fixedly connected to two sides of the U-shaped pipe respectively, and an adjusting assembly used for enabling the U-shaped pipe to be far away from one side of the fixed plate to rotate up and down is arranged on the movable support.

Furthermore, the adjusting assembly comprises a plurality of sections of electric cylinders fixedly mounted on one side, far away from the fixed plate, of the top of the movable support, piston rods of the plurality of sections of electric cylinders face upwards, and the tail ends of the piston rods of the plurality of sections of electric cylinders are rotatably connected with sliding blocks which are clamped and slidably connected to the bottoms of the U-shaped pipes along the length direction of the U-shaped pipes.

Furthermore, one side of the bottom of the U-shaped pipe is fixedly connected with a guide rod along the length direction of the U-shaped pipe, a sliding groove with a T-shaped internal structure is formed in the bottom of the guide rod along the length direction of the guide rod, and the sliding block is a T-shaped block and is inserted into the sliding groove in a sliding mode.

Furthermore, two symmetrical convex blocks are formed at the bottom of the sliding block, a connecting shaft in the horizontal axial direction is rotatably connected between the two convex blocks through a bearing, and the connecting shaft is rotatably inserted at the tail end of a piston rod of the multi-section electric cylinder.

Further, the inside of feeder hopper is rotated through the bearing and is connected with the dwang that is horizontal axial, just the circumference surface of dwang is a plurality of turnover boards that are located the feeder hopper that are equidistant annular array distribution fixedly connected with, the outer fixed surface of feeder hopper is connected with the motor two that the output shaft paralleled with the dwang, the terminal fixedly connected with initiative spur gear of output shaft of motor two, the one end of dwang runs through feeder hopper and fixedly connected with and the driven spur gear of initiative spur gear engaged with.

Further, the movable support includes the bottom plate, the universal wheel is all installed to the bottom four corners department of bottom plate, one side fixedly connected with handle of bottom plate, be provided with the fixed subassembly that is used for the PMKD position on the bottom plate, the fixed subassembly includes four hydro-cylinders, four the hydro-cylinder is fixed mounting respectively in the four corners department of bottom plate and is vertical direction, every the piston rod of hydro-cylinder all down and fixedly connected with callus on the sole.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the rotating assembly arranged on the U-shaped pipe, the two flood dragon conveying rods can synchronously rotate under the action of the rotating assembly, so that the two flood dragon conveying rods can synchronously operate on the U-shaped pipe to convey materials to the direction of the discharge hole together.

2. According to the invention, through the adjusting assembly arranged on the movable support, when the piston rods of the multiple sections of electric cylinders extend and retract, the sliding blocks can be driven to correspondingly lift, and the side, away from the fixed plate, of the U-shaped pipe is pushed to correspondingly rotate up and down, so that the purpose of adjusting the height of the discharge hole is achieved, and the height of the discharge position of the conveyor can be correspondingly changed.

3. According to the invention, through the rotating rod and the turning plates arranged in the feed hopper, when the output shaft of the motor II rotates, the driving straight gear can be driven to rotate, the driving straight gear can drive the driven straight gear to synchronously rotate through the matching of teeth, so that the purpose of driving the rotating rod to rotate is realized, and when the rotating rod rotates, the turning plates can rotate in the feed hopper, so that materials in the feed hopper can be continuously turned, and the situation of material accumulation and blockage is avoided.

4. The universal wheels are arranged on the bottom plate, so that the device can be flexibly moved for use, meanwhile, the oil cylinder is arranged on the bottom plate, when a piston rod of the oil cylinder is produced, the foot pads can be driven to move downwards, finally, the four foot pads can be in contact with the ground and support the whole conveyor, and the universal wheels are in an empty state at the moment, so that the position of the device is fixed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic plan view of the present invention;

FIG. 3 is a schematic side view of the structure of the present invention;

FIG. 4 is a schematic perspective view of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4 according to the present invention;

FIG. 6 is an exploded view of the U-shaped tube and the top plate of the present invention;

FIG. 7 is a schematic top view (including partial enlargement) of the structure of the present invention;

FIG. 8 is a schematic view of the structure of the present invention from below (including a partial enlargement);

FIG. 9 is a schematic view of the movable support structure of the present invention in a fixed state;

FIG. 10 is an exploded view of the multi-section electric cylinder and the sliding block of the present invention;

in the figure: 1. a movable support; 2. a U-shaped pipe; 3. a discharge port; 4. a top plate; 5. a feed hopper; 6. a flood dragon conveying rod; 7. a rotating assembly; 71. a chain wheel I; 72. a second chain wheel; 73. a chain; 74. a drive bevel gear; 75. a driven bevel gear; 76. a first motor; 8. a fixing plate; 9. a rotating shaft; 10. an adjustment assembly; 101. a plurality of sections of electric cylinders; 102. a guide bar; 103. a slider; 104. a connecting shaft; 11. rotating the rod; 12. turning the plate; 13. a second motor; 14. a driving spur gear; 15. a driven spur gear; 16. a base plate; 17. a universal wheel; 18. a handle; 19. a fixing assembly; 191. an oil cylinder; 192. a foot pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-10, the variable frequency multi-shaft screw conveyor provided by the present embodiment comprises a movable support 1, a U-shaped pipe 2 with an open top is disposed on the top of the movable support 1, a discharge port 3 is disposed on one side of the U-shaped pipe 2, a top plate 4 is fixedly connected to the top of the U-shaped pipe 2, a feed hopper 5 communicated with the inside of the U-shaped pipe 2 is fixedly connected to one side of the top plate 4 away from the discharge port 3, two auger conveying rods 6 axially arranged in the left and right directions and vertically distributed through a bearing are rotatably connected to the inside of the U-shaped pipe 2, a rotating assembly 7 for synchronously rotating the two auger conveying rods 6 is disposed on the U-shaped pipe 2, so that a material to be conveyed can be put into the feed hopper 5, the material can enter the U-shaped pipe 2 through the feed hopper 5, and then the two auger conveying rods 6 can synchronously rotate through the rotating assembly 7, so that two flood dragon carrying rod 6 can carry the material in order together to the direction of discharge gate 3 at U type pipe 2 synchro-operation, the mode of this kind of transport is compared in traditional unipolar conveyer and is shown the improvement in the delivery capacity, can effectual improvement transport material's speed, saves the activity duration, specially adapted some occasions that the delivery capacity is big.

Referring to fig. 4 and 5, in order to enable the two dragon conveying rods 6 to rotate simultaneously, in some embodiments, it is provided that one end of each of the two dragon conveying rods 6, which is far away from the discharge port 3, penetrates through the U-shaped pipe 2 and extends to the outside of the U-shaped pipe 2, the rotating assembly 7 includes a first sprocket 71 and a second sprocket 72, the first sprocket 71 is fixedly sleeved on one side of one of the dragon conveying rods 6, which is located outside the U-shaped pipe 2, the second sprocket 72 is fixedly sleeved on one side of the other dragon conveying rod 6, which is located outside the U-shaped pipe 2, a chain 73 is wound between the first sprocket 71 and the second sprocket 72 through a chain, a driving assembly for driving one of the dragon conveying rods 6 to rotate is disposed on the U-shaped pipe 2, when one of the dragon conveying rods 6 rotates, the first sprocket 71 can be driven to rotate, and the first sprocket 71 can be driven by the cooperation of the chain 73 to drive the second sprocket 72 to rotate synchronously, thereby make two flood dragon carry pole 6 to rotate simultaneously to realize the transport to the interior material of U type pipe 2.

Specifically, in order to drive one of the flood dragon conveying rods 6 to rotate, in some embodiments, the driving assembly comprises a driving bevel gear 74 which is rotatably arranged on the U-shaped pipe 2 and is perpendicular to the axial direction of the flood dragon conveying rod 6, one end, located outside the U-shaped pipe 2, of one flood dragon conveying rod 6 is fixedly connected with a driven bevel gear 75 meshed with the driving bevel gear 74, a driving piece for driving the driving bevel gear 74 to rotate is arranged on the U-shaped pipe 2, and thus, when the driving bevel gear 74 rotates, the driving bevel gear 75 can be driven to rotate correspondingly through the matching of teeth, so that the purpose of driving one of the flood dragon conveying rods 6 to rotate is achieved, and the two flood dragon conveying rods 6 can rotate simultaneously and have the effect of conveying materials in the U-shaped pipe 2.

The specific way for driving the drive bevel gear 74 to rotate is as follows, the driving part comprises a motor I76 fixedly mounted on the surface of the U-shaped pipe 2 through a support plate, the axial direction of the output shaft of the motor I76 is perpendicular to the auger delivery rod 6, and the tail end of the motor I is fixedly connected to the end surface of the drive bevel gear 74 through a coupler, so that when the output shaft of the motor I76 rotates, the effect of driving the drive bevel gear 74 to rotate is achieved.

Referring to fig. 3 and 6, a specific connection manner between the U-shaped tube 2 and the movable support 1 is as follows, two symmetrical fixing plates 8 in a vertical direction are fixedly connected to one side of the top of the movable support 1, one side of the two fixing plates 8 close to each other is rotatably connected to a rotation shaft 9 perpendicular to the two fixing plates through bearings, the two rotation shafts 9 are located on the same central axis, one ends of the two rotation shafts 9 close to each other are respectively and fixedly connected to two sides of the U-shaped tube 2, and meanwhile, an adjusting assembly 10 for enabling the U-shaped tube 2 to be far away from one side of the fixing plate 8 to rotate up and down is arranged on the movable support 1, so that the height of the discharge port 3 can be changed through rotation of one side of the U-shaped tube 2, and the conveyor can adjust its own angle according to different conveying requirements, and has high practicability.

In some embodiments, in order to enable the side of the U-shaped pipe 2 far away from the fixing plate 8 to rotate up and down, it is proposed that the adjusting assembly 10 includes a plurality of sections of electric cylinders 101 fixedly installed at the top of the movable support 1 far away from the side of the fixing plate 8, piston rods of the plurality of sections of electric cylinders 101 face up and ends of the electric cylinders are rotatably connected with sliding blocks 103 connected to the bottom of the U-shaped pipe 2 along the length direction of the U-shaped pipe 2 in a clamping and sliding manner, and with such a design, when the piston rods of the plurality of sections of electric cylinders 101 extend and retract, the sliding blocks 103 can be driven to correspondingly lift and push the side of the U-shaped pipe 2 far away from the fixing plate 8 to correspondingly rotate up and down, so as to achieve the purpose of adjusting the height of the discharge port 3, and accordingly change the height of the discharge position of the conveyor.

Preferably, the specific connection mode between the sliding block 103 and the U-shaped tube 2 is that the guide rod 102 is fixedly connected to one side of the bottom of the U-shaped tube 2 along the length direction thereof, the sliding groove with a T-shaped internal structure is formed in the bottom of the guide rod 102 along the length direction thereof, and the sliding block 103 is a T-shaped block and is slidably inserted into the sliding groove.

Meanwhile, referring to fig. 10, regarding a specific connection manner between the multi-section electric cylinder 101 and the sliding block 103, two symmetrical protruding blocks are formed at the bottom of the sliding block 103, a connecting shaft 104 in a horizontal axial direction is rotatably connected between the two protruding blocks through a bearing, and the connecting shaft 104 is rotatably inserted into the tail end of the piston rod of the multi-section electric cylinder 101, so that the sliding block 103 can rotate at the tail end of the piston rod of the multi-section electric cylinder 101, which is more reasonable in design.

In addition, when the worker pours the material into the feeding hopper 5, the material may be stacked in the feeding hopper 5 due to too much material, so that the material cannot normally fall into the U-shaped tube 2, in order to avoid the above problem, please refer to fig. 7, in some embodiments, the inside of the feeding hopper 5 is provided with a rotating rod 11 in a horizontal axial direction through a bearing, a plurality of flipping plates 12 located in the feeding hopper 5 are fixedly distributed and connected in an equally spaced annular array on the circumferential surface of the rotating rod 11, a second motor 13 having an output shaft parallel to the rotating rod 11 is fixedly connected to the outer surface of the feeding hopper 5, a driving spur gear 14 is fixedly connected to the end of the output shaft of the second motor 13, one end of the rotating rod 11 penetrates through the feeding hopper 5 and is fixedly connected to a driven spur gear 15 engaged with the driving spur gear 14, by such design, when the output shaft of the second motor 13 rotates, the driving spur gear 14 can be driven to rotate, and initiative spur gear 14 then can drive driven spur gear 15 through the cooperation of tooth and carry out synchronous rotation to realize the 11 pivoted purposes of drive dwang, dwang 11 then can make a plurality of turning plates 12 rotate in the inside of feeder hopper 5 when rotating, overturn with the material of continuous in to feeder hopper 5, avoid appearing the condition that material pile blocks up.

Specifically, the movable support 1 includes a bottom plate 16, universal wheels 17 are mounted at four corners of the bottom plate 16, and a handle 18 is fixedly connected to one side of the bottom plate 16, so that a worker can hold the handle 18 with a hand and push the bottom plate 16 to move, so that the conveyor can be flexibly used, meanwhile, a fixing assembly 19 for fixing the position of the bottom plate 16 is disposed on the bottom plate 16, the fixing assembly 19 includes four oil cylinders 191, the four oil cylinders 191 are respectively and fixedly mounted at four corners of the bottom plate 16 and are in a vertical direction, a piston rod of each oil cylinder 191 faces downward and is fixedly connected with a foot pad 192, by such a design, when the piston rod of the oil cylinder 191 is produced, the foot pad 192 can be driven to move downward, and finally the four foot pads 192 can contact the ground and support the whole conveyor, and at this time, the universal wheels 17 can be in an empty state (as shown in fig. 9), the position of the device is fixed.

In the device, all electric devices and drivers matched with the electric devices are arranged, and all driving parts, namely power elements, the electric devices and adaptive power supplies, are connected through leads by a person skilled in the art, and specific connecting means refer to the above expression that the electric devices are electrically connected in sequence, and detailed connecting means thereof are well known in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A variable-frequency multi-shaft screw conveyor comprises a movable support (1) and is characterized in that a U-shaped pipe (2) with an open top is arranged at the top of the movable support (1), a discharge port (3) is formed in one side of the U-shaped pipe (2), a top plate (4) is fixedly connected to the top of the U-shaped pipe (2), a feed hopper (5) communicated with the inside of the U-shaped pipe (2) is fixedly connected to one side, away from the discharge port (3), of the top plate (4), two flood dragon conveying rods (6) which are in left-right axial direction and distributed up and down are rotatably connected in the U-shaped pipe (2) through bearings, a rotating assembly (7) used for enabling the two flood dragon conveying rods (6) to rotate synchronously is arranged on the U-shaped pipe (2), one ends, away from the discharge port (3), of the two flood dragon conveying rods (6) penetrate through the U-shaped pipe (2) and extend to the outside of the U-shaped pipe (2), rotating assembly (7) are including sprocket (71) and sprocket two (72), sprocket (71) is fixed cup joints one of them flood dragon conveying rod (6) is located one side outside U type pipe (2), sprocket two (72) are fixed cup joints another flood dragon conveying rod (6) is located one side outside U type pipe (2), there are chain (73) through the chain tooth winding between sprocket (71) and sprocket two (72), be provided with on U type pipe (2) and be used for driving one of them flood dragon conveying rod (6) and carry out the pivoted drive assembly.

2. The variable-frequency multi-shaft spiral conveyor according to claim 1, wherein the driving assembly comprises a driving bevel gear (74) rotatably arranged on the U-shaped pipe (2) and perpendicular to the axial direction of the flood dragon conveying rods (6), one end of one flood dragon conveying rod (6) located outside the U-shaped pipe (2) is fixedly connected with a driven bevel gear (75) meshed with the driving bevel gear (74), and a driving piece for driving the driving bevel gear (74) to rotate is arranged on the U-shaped pipe (2).

3. The variable-frequency multi-shaft spiral conveyor according to claim 2, wherein the driving member comprises a first motor (76) fixedly mounted on the surface of the U-shaped pipe (2) through a support plate, an output shaft of the first motor (76) is axially perpendicular to the spiral conveyor rod (6), and the tail end of the first motor is fixedly connected to the end surface of the drive bevel gear (74) through a coupler.

4. The variable-frequency multi-shaft spiral conveyor according to claim 1, wherein two symmetrical fixing plates (8) in the vertical direction are fixedly connected to one side of the top of the movable support (1), one side, close to each other, of each fixing plate (8) is rotatably connected with a rotating shaft (9) perpendicular to the corresponding fixing plate through a bearing, the two rotating shafts (9) are located on the same central axis, one ends, close to each other, of the two rotating shafts (9) are fixedly connected to two sides of the U-shaped pipe (2), and an adjusting assembly (10) for enabling the U-shaped pipe (2) to rotate up and down far away from one side, close to each fixing plate (8), of the movable support (1) is arranged on the movable support.

5. The variable-frequency multi-shaft spiral conveyor according to claim 4, wherein the adjusting assembly (10) comprises a plurality of sections of electric cylinders (101) fixedly mounted on the top of the movable support (1) far away from the fixed plate (8), piston rods of the plurality of sections of electric cylinders (101) face upwards, and the tail ends of the electric cylinders are rotatably connected with sliding blocks (103) which are clamped and slidably connected to the bottoms of the U-shaped pipes (2) along the length direction of the U-shaped pipes (2).

6. The variable-frequency multi-shaft spiral conveyor according to claim 5, wherein a guide rod (102) is fixedly connected to one side of the bottom of the U-shaped pipe (2) along the length direction of the U-shaped pipe, a T-shaped sliding groove with an internal structure is formed in the bottom of the guide rod (102) along the length direction of the guide rod, and the sliding block (103) is a T-shaped block and is slidably inserted into the sliding groove.

7. The variable-frequency multi-shaft spiral conveyor according to claim 6, wherein two symmetrical convex blocks are formed at the bottom of the sliding block (103), a connecting shaft (104) in a horizontal axial direction is rotatably connected between the two convex blocks through a bearing, and the connecting shaft (104) is rotatably inserted at the tail end of the piston rod of the multi-section electric cylinder (101).

8. The variable-frequency multi-shaft spiral conveyor according to claim 1, wherein a rotating rod (11) in the horizontal axial direction is rotatably connected to the inside of the feed hopper (5) through a bearing, a plurality of turning plates (12) which are located in the feed hopper (5) are fixedly connected to the circumferential surface of the rotating rod (11) in an equidistant annular array distribution, a second motor (13) is fixedly connected to the outer surface of the feed hopper (5) and has an output shaft parallel to the rotating rod (11), a driving spur gear (14) is fixedly connected to the tail end of the output shaft of the second motor (13), and one end of the rotating rod (11) penetrates through the feed hopper (5) and is fixedly connected with a driven spur gear (15) meshed with the driving spur gear (14).

9. The variable-frequency multi-shaft spiral conveyor according to claim 1, wherein the movable support (1) comprises a bottom plate (16), universal wheels (17) are mounted at four corners of the bottom plate (16), a handle (18) is fixedly connected to one side of the bottom plate (16), a fixing component (19) for fixing the position of the bottom plate (16) is arranged on the bottom plate (16), the fixing component (19) comprises four oil cylinders (191), the four oil cylinders (191) are respectively and fixedly mounted at the four corners of the bottom plate (16) and are in a vertical direction, and a piston rod of each oil cylinder (191) faces downwards and is fixedly connected with a foot pad (192).