CN217683088U

CN217683088U - Belt pulley of straw returning machine

Info

Publication number: CN217683088U
Application number: CN202222103489.8U
Authority: CN
Inventors: 韩阿丽; 覃章明
Original assignee: Xuchang Jian'an District Agricultural Machinery Supervision Station
Current assignee: Xuchang Jian'an District Agricultural Machinery Supervision Station
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-10-28
Anticipated expiration: 2032-08-11

Abstract

The utility model provides a pulley of a straw returning machine, comprising: a driving wheel, a driving wheel shaft, a driven wheel, a driving wheel shaft and a belt, wherein the shape of the shaft hole of the driving wheel is a rectangle, and the driving wheel and the driving wheel shaft are connected by a profile surface , the driving wheel shaft is sleeved with a circular baffle, the shape of the shaft hole of the circular baffle is also rectangular, and the cross-sectional shape of the driving wheel shaft of the connecting part of the driving wheel shaft and the circular baffle is circular. After the plate rotates 90 degrees around the driving wheel shaft, use bolts to fix the circular baffle and the driving wheel. The part of the driving wheel shaft on the outside of the circular baffle is stuck to the circular baffle to limit the axis of the driving wheel and the circular baffle relative to the driving wheel shaft. The connection between the driven wheel and the driven wheel shaft is the same as the connection between the driving wheel and the driving wheel shaft. The technical scheme of the utility model can solve the problems in the prior art that the connection of the pulley of the straw returning machine is easy to loosen, the disassembly and assembly are inconvenient, and the connection and mating surface is easily damaged after repeated disassembly and assembly.

Description

Belt pulley of straw returning machine

Technical Field

The utility model belongs to the technical field of agricultural machine, concretely relates to straw returning machine belt pulley.

Background

A straw returning machine, which is a protective farming machine for cutting and crushing residual field straw stubbles and then laying or burying the cut and crushed straw stubbles in soil. Comprises cutting, stubble breaking, crushing, throwing, crushing degree and stubble breaking depth adjusting, power transmission and other mechanisms. During operation, the cutter, hammer claw or flail knife rotating at high speed cuts off the straw, picks up the stubble, inputs the stubble into the casing, and is uniformly thrown into the field after repeated shearing, rubbing, tearing, pulling and crushing by the fixed and movable knives. Because the belt transmission has the characteristics of simple structure, stable transmission, low price, buffering, vibration absorption and the like, the power transmission mechanism of the straw returning machine often uses the belt transmission mechanism.

A belt wheel and a transmission shaft in a belt transmission mechanism in the straw returning machine are often connected by key and interference, but the connection is easy to loosen after the key and interference connection bear long-time impact and vibration due to large load change and large vibration and impact in the work of the straw returning machine; when the belt transmission mechanism of the straw returning machine adopts interference connection, workers often use a swelling and shrinking method to assemble, the belt wheel is sleeved on the transmission shaft after the belt wheel needs to be heated, the assembly process is complex, the belt wheel is loosened from the transmission shaft by frequently using heavy objects to strike the belt wheel during disassembly, and the fitting surface can be seriously damaged after repeated disassembly and assembly.

In conclusion, the belt pulley of the straw returning machine in the prior art has the problems that the connection is easy to loosen, the disassembly and the assembly are inconvenient, and the connection matching surface is easy to damage after the repeated disassembly and assembly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a still field of straw machine belt pulley for there is the connection in the still field of straw machine belt pulley to be easily not hard up among the solution prior art, and the dismouting is inconvenient, connects the problem that the fitting surface easily received the damage after the dismouting many times.

In order to solve the above problem at least, the utility model provides a following technical scheme:

a pulley of a straw returning machine comprises: the device comprises a driving wheel, a driving wheel shaft, a driven wheel shaft and a belt, wherein the driving wheel is sleeved on the driving wheel shaft, the driven wheel is sleeved on the driven wheel shaft, and the belt is connected with the driving wheel and the driven wheel; the driving wheel is connected with the driving wheel shaft by a molded surface; the shaft hole of the driving wheel is rectangular; a circular baffle is sleeved on the driving wheel shaft, and the shape of the shaft hole of the circular baffle is the same as that of the shaft hole of the driving wheel;

one end of the driving wheel shaft connected with the driving wheel can be divided into a driving wheel connecting section, a circular baffle connecting section and an axial positioning section from inside to outside along the axial direction, the length of the driving wheel connecting section is the same as the thickness of the driving wheel, the length of the circular baffle connecting section is the same as the thickness of the circular baffle, the cross section shapes of the driving wheel connecting section and the axial positioning section are the same as the shaft hole shape of the driving wheel, the cross section shape of the circular baffle connecting section is circular, and the diameter of the circular cross section of the circular baffle connecting section is the same as the length of the short side of the rectangular shaft hole of the driving wheel;

round holes are formed in the round baffle and the driving wheel, and bolts are arranged to penetrate through the round holes to connect the round baffle and the driving wheel;

the connection mode between the driven wheel and the driven wheel shaft is the same as that between the driving wheel and the driving wheel shaft.

According to the utility model discloses an embodiment, the nut of bolt uses hexagonal slotted nut, set up the split pin in the hexagonal slotted nut.

According to the utility model discloses an embodiment, the action wheel with be provided with automatic tensioning device from between the driving wheel.

According to the utility model discloses an embodiment, automatic tensioning device includes: the device comprises a fixed sliding chute, a sliding block, a spring, a tensioning wheel and a tensioning wheel shaft; the sliding block moves up and down along the fixed sliding groove, the spring is connected with the sliding block and the fixed sliding groove, the spring is arranged in the vertical direction, the tensioning wheel shaft is fixedly connected to the sliding block, and the tensioning wheel is sleeved on the tensioning wheel shaft.

According to the utility model discloses an embodiment, the action wheel, be provided with the protection casing from the driving wheel and the belt outside.

According to the utility model discloses an embodiment, be provided with the ash-collecting box on the protection casing, the ash-collecting box includes first rectangular plate, second rectangular plate and set-square, first rectangular plate and second rectangular plate clamp in the protection casing with between the set-square and with the protection casing with set-square fixed connection, first rectangular plate is on a parallel with the belt just is located the belt is inboard, the second rectangular plate is close to from the driving wheel, first rectangular plate and second rectangular plate lower part fixed connection.

The technical effects of the utility model: the utility model provides a technical scheme, this straw returning machine belt pulley includes: the driving wheel and the driving wheel shaft are connected by molded surfaces, the shaft hole of the driving wheel is rectangular, the shape of the cross section of the part, connected with the driving wheel, of the driving wheel shaft is the same as that of the shaft hole of the driving wheel, a circular baffle is sleeved on the driving wheel shaft, the shape of the shaft hole of the circular baffle is the same as that of the shaft hole of the driving wheel, the shape of the cross section of the part, connected with the circular baffle, of the driving wheel shaft is circular, and the diameter of the circular cross section of the part, connected with the circular baffle, of the driving wheel shaft is the same as the length of the short edge of the rectangular shaft hole of the driving wheel; round holes are formed in the round baffle and the driving wheel; after the circular baffle is sleeved on the driving wheel shaft, the circular baffle rotates ninety degrees around the driving wheel shaft, then bolts penetrate through the circular baffle and the circular hole in the driving wheel to connect the circular baffle and the driving wheel, the upper shaft hole of the circular baffle is rectangular, so that the circular baffle is clamped by the driving wheel shaft after rotating ninety degrees around the driving wheel shaft to limit the movement of the circular baffle along the axial direction of the driving wheel shaft.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are illustrated by way of example and not by way of limitation, and like reference numerals designate like or corresponding parts, in which:

FIG. 1 is a schematic view of a coupling structure between a driving wheel and a driving wheel shaft of a belt pulley of a straw returning machine according to an embodiment of the present invention;

fig. 2 is a schematic view of a driving axle structure according to an embodiment of the present invention;

fig. 3 is a front view of a driving wheel according to an embodiment of the present invention;

fig. 4 is a front view of a circular baffle according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a straw returning machine with a tensioning wheel according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a tension wheel according to an embodiment of the present invention.

In the figure: 1. a driving wheel; 2. a driving wheel shaft; 3. a driven wheel; 4. a driven axle; 5. a belt; 6. a circular baffle; 8. a bolt; 9. fixing the chute; 10. a slider; 11. a spring; 12. a tension wheel; 13. the wheel axle is tensioned.

Detailed Description

The technical solutions in the embodiments of the present application are described below clearly and completely with reference to the drawings in the embodiments of the present application, and it should be understood by those skilled in the art that the embodiments described below are some embodiments of the present application, but not all 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 application.

Referring to fig. 1, 2, 3 and 4, the structure shown in fig. 1, 2, 3 and 4 is a schematic view of the connection structure between the belt pulley and the axle of the belt pulley of the straw returning machine provided by the present invention, the driving wheel and the driving axle of the belt pulley of the straw returning machine are connected by a molded surface, which is convenient to disassemble and assemble, and the fitting surface is not damaged by repeated disassembling and assembling. The following describes the structure of the pulley of the straw returning machine in detail with reference to fig. 1, fig. 2, fig. 3 and fig. 4.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the pulley of the straw returning machine provided by the utility model comprises: the device comprises a driving wheel 1, a driving wheel shaft 2, a driven wheel 3, a driven wheel shaft 4 and a belt 5, wherein the driving wheel 1 is sleeved on the driving wheel shaft 2, the driven wheel 3 is sleeved on the driven wheel shaft 4, and the belt 5 is connected with the driving wheel 1 and the driven wheel 3; the driving wheel 1 is connected with the driving wheel shaft 2 by a molded surface; the shaft hole of the driving wheel 1 is rectangular; the driving wheel shaft 2 is sleeved with a circular baffle 6, and the shape of the shaft hole of the circular baffle 6 is the same as that of the shaft hole of the driving wheel 1;

one end of the driving wheel shaft 2 connected with the driving wheel 1 can be divided into a driving wheel connecting section, a circular baffle connecting section and an axial positioning section from inside to outside along the axial direction, the length of the driving wheel connecting section is the same as the thickness of the driving wheel 1, the length of the circular baffle connecting section is the same as the thickness of the circular baffle 6, the cross-sectional shapes of the driving wheel connecting section and the axial positioning section are the same as the shaft hole shape of the driving wheel 1, the cross-sectional shape of the circular baffle connecting section is circular, and the diameter of the circular cross-section of the circular baffle connecting section is the same as the length of the short edge of the rectangular shaft hole of the driving wheel 1;

round holes are formed in the round baffle 6 and the driving wheel 1, and bolts are arranged to penetrate through the round holes to connect the round baffle 6 and the driving wheel 1;

the driven wheel 3 and the driven wheel shaft 4 are connected in the same way as the driving wheel 1 and the driving wheel shaft 2.

When the belt pulley of the straw returning machine is installed, firstly, a driving wheel 1 is sleeved on a driving wheel shaft 2, the rotation between the driving wheel 1 and the driving wheel shaft 2 is limited because the shaft hole shape of the driving wheel 1 is rectangular, then a circular baffle 6 is sleeved on the driving wheel shaft 2, the shaft hole shape of the circular baffle 6 is the same as that of the driving wheel 1, but the section shape of the connecting part of the driving wheel shaft 2 and the circular baffle 6 is circular, the diameter of the circular section of the connecting part of the driving wheel shaft 2 and the circular baffle 6 is the same as the length of the short side of the rectangular shaft hole of the driving wheel 1, so the circular baffle 6 can rotate around the driving wheel shaft 2, after the circular baffle 6 rotates ninety degrees around the driving wheel shaft 2, the circular baffle 6 and the driving wheel 1 are fixed by using a bolt 8, because the shaft hole of the circular baffle 6 is rectangular, the section of the driving wheel shaft 2 outside the circular baffle 6 is also rectangular, therefore, the part of the driving wheel shaft 2 outside the circular baffle 6 rotating ninety degrees clamps the circular baffle 6, the circular baffle 6 is limited from the axial movement of the driving wheel shaft 2 along the driving wheel shaft 2, and the driving wheel shaft 1 is also limited by the driving wheel shaft 2, and the driving wheel shaft 1; when the driving wheel 1 is detached from the driving wheel shaft 2, the bolt 8 for connecting the driving wheel 1 and the circular baffle 2 is firstly taken down, the circular baffle 6 rotates ninety degrees around the driving wheel shaft 2, then the circular baffle 6 is taken down from the driving wheel shaft 2, and then the driving wheel 1 is taken down from the driving wheel shaft 2; the dismounting process of the driven wheel 3 and the driven wheel shaft 4 is the same as that of the driving wheel 1 and the driving wheel shaft 2.

Therefore, the technical scheme provided by the utility model, this straw returning machine belt pulley installation is dismantled conveniently, can not produce between band pulley and the band pulley axle because of vibration and impact and become flexible, and the fitting surface can not be damaged in many times of installation dismantlements.

In one embodiment, the nut of the bolt 8 for connecting the belt pulley and the circular baffle 6 is a hexagonal slotted nut, a split pin is arranged in the hexagonal slotted nut, the bolt 8 is easy to loosen due to large load variation and large vibration and impact in the operation of the straw returning machine, and the hexagonal slotted nut and the split pin are used for preventing the screw pair from rotating when being loaded.

As shown in fig. 5, in one embodiment, an automatic tensioning device is arranged between the driving wheel 1 and the driven wheel 3, after the belt transmission runs for a period of time, the transmission belt can be loosened due to plastic deformation and abrasion, and in order to ensure the normal operation of the transmission belt, the automatic tensioning device is arranged between the driving wheel 1 and the driven wheel 3, so that the transmission belt automatically maintains the initial tension.

As shown in fig. 6, in one embodiment, the automatic tensioning device comprises: the device comprises a fixed sliding chute 9, a sliding block 10, a spring 11, a tension wheel 12 and a tension wheel shaft 13; the sliding block 10 moves up and down along the fixed sliding chute 9, the spring 11 is connected with the sliding block 10 and the fixed sliding chute 9, the spring 11 is arranged along the vertical direction, the tensioning wheel shaft 13 is fixedly connected to the sliding block 10, and the tensioning wheel 12 is sleeved on the tensioning wheel shaft 13; fixed chute 9 fixed connection is on the straw returning to field shell body, and take-up pulley 12 hugs closely the drive belt inboard, and spring 11 promotes slider 10 and then promotes tensioning wheel axle 13, makes take-up pulley 12 promote the drive belt, guarantees the automatic tensioning of drive belt by the pretightning force of spring 11.

In one embodiment, the protective covers are arranged on the outer sides of the driving wheel 1, the driven wheel 3 and the belt 5, when the straw returning machine works, straws are at risk of being drawn into the belt wheel, sundries entering the space between the belt wheel and the belt 5 can also influence the friction force between the belt 5 and the belt wheel, and the abrasion of the belt 5 is accelerated, so that the protective covers are additionally arranged on the belt 5 and the belt wheel, the persons and the straws are prevented from being drawn into the belt wheel, and the sundries entering the belt wheel can also be prevented from influencing the work of the straw returning machine.

In one embodiment, the dust collecting box is arranged on the protective cover and comprises a first rectangular plate, a second rectangular plate and a triangular plate, the first rectangular plate and the second rectangular plate are clamped between the protective cover and the triangular plate and fixedly connected with the protective cover and the triangular plate, the first rectangular plate is parallel to the belt 5 and is positioned on the inner side of the belt 5, the second rectangular plate is close to the driven wheel 3, and the lower parts of the first rectangular plate and the second rectangular plate are fixedly connected; because the straw still field machine during operation need smash the straw and turn soil, it is often covered by the dust cage, considers the heat dissipation problem of belt drive, also need to open on the protective shield has the bleeder vent, though there is the protective shield can filter the bold debris, but the dust still can get into the protective shield of straw still field machine in, is provided with the ash collecting box on the protective shield and can reduces the dust and get into between belt 5 and the band pulley, increases the belt pulley life-span.

In light of the foregoing description of the present specification, those skilled in the art will also understand that terms used herein, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "lateral," "clockwise," or "counterclockwise," etc., indicate that the terms used herein are based on the orientations and positional relationships illustrated in the drawings of the present specification, and are intended merely for the purpose of facilitating the description and simplifying the description, and do not explicitly or implicitly indicate that the device or element being referred to must have the particular orientation, be constructed and operated in the particular orientation, and therefore the terms used in the orientation or positional relationship should not be understood or interpreted as limiting the scope of the present invention.

In addition, the terms "first" or "second", etc. used in this specification are used to refer to numbers or ordinal numbers only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "a plurality" means at least two, for example, two, three or more, and the like, unless specifically defined otherwise.

While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. The following claims are intended to define the scope of the invention and to cover module components, equivalents, or alternatives falling within the scope of these claims.

Claims

1. A pulley of a straw returning machine comprises: the device comprises a driving wheel, a driving wheel shaft, a driven wheel shaft and a belt, wherein the driving wheel is sleeved on the driving wheel shaft, the driven wheel is sleeved on the driven wheel shaft, and the belt is connected with the driving wheel and the driven wheel; the method is characterized in that: the driving wheel is connected with the driving wheel shaft by a molded surface; the shaft hole of the driving wheel is rectangular; a circular baffle is sleeved on the driving wheel shaft, and the shape of the shaft hole of the circular baffle is the same as that of the shaft hole of the driving wheel;

2. The pulley of a straw returning machine as claimed in claim 1, wherein the nut of the bolt is a hexagonal slotted nut, and a cotter pin is arranged in the hexagonal slotted nut.

3. The pulley of a straw returning machine as claimed in claim 1, wherein an automatic tensioning device is provided between the driving wheel and the driven wheel.

4. The pulley of straw returning machine as claimed in claim 3, wherein the automatic tensioning device comprises: the device comprises a fixed sliding chute, a sliding block, a spring, a tensioning wheel and a tensioning wheel shaft; the sliding block moves up and down along the fixed sliding groove, the spring is connected with the sliding block and the fixed sliding groove, the spring is arranged in the vertical direction, the tensioning wheel shaft is fixedly connected to the sliding block, and the tensioning wheel is sleeved on the tensioning wheel shaft.

5. The pulley of the straw returning machine as claimed in claim 1, wherein the driving wheel, the driven wheel and the belt are provided with a protective cover at the outer side.

6. The pulley of a straw returning machine as claimed in claim 5, wherein the protecting cover is provided with an ash collecting box, the ash collecting box comprises a first rectangular plate, a second rectangular plate and a triangular plate, the first rectangular plate and the second rectangular plate are clamped between the protecting cover and the triangular plate and fixedly connected with the protecting cover and the triangular plate, the first rectangular plate is parallel to the belt and positioned on the inner side of the belt, the second rectangular plate is close to the driven wheel, and the lower parts of the first rectangular plate and the second rectangular plate are fixedly connected.