Tensioning structure of engine belt pulley of pesticide sprayer

Abstract

The utility model discloses a tensioning structure of an engine belt pulley of a pesticide spraying machine, which relates to the technical field of agricultural machinery, has the advantages of being provided with a belt tensioning structure and reducing the slipping condition of a belt, and is characterized by comprising a rack and an engine arranged on the rack, a first belt pulley is coaxially and fixedly arranged on an output shaft of the engine, a gearbox is arranged on the machine frame and located below the engine, a second belt pulley is coaxially and fixedly arranged at the input end of the gearbox, and the first belt pulley and the second belt pulley are connected through an annular belt. The rack is provided with a pressing piece which enables the annular belt to be pressed on the first belt wheel and the second belt wheel.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, concretely is a kind of tension structure of engine pulley of spraying machine. BACKGROUND

[0002] Spraying machine is a kind of agricultural machinery that disperses liquid, is a kind of agricultural pesticide application machinery, is applicable to forest, nursery, orchard, tea garden pest control;Cotton, wheat, rice, corn and other field crops and large area grassland pest control;Urban, suburban garden trees, vegetable fields and material greenhouse plant pest control.Wind-sending spraying machine is sent medicine by installing fan and cooperating with spray head, realizes large-area high-penetration spraying crop, and has good spraying effect.

[0003] The Chinese patent with publication number CN207355322U discloses a kind of self-propelled spraying machine, including electric tricycle and the medicine tank and rack respectively arranged in front and back in electric tricycle compartment, engine and spraying pump are arranged side by side on rack, the engine is connected by belt transmission to spraying pump.But if tension is insufficient in transmission process, it is easy to produce sliding between belt and wheel, to cause transmission efficiency to reduce even stop working.

[0004] Therefore, the applicant develops a new technical scheme in actual production process to solve the above technical problems. UTILITY MODEL CONTENT

[0005] In view of the above technical deficiencies, the utility model aims to provide a kind of tension structure of engine pulley of spraying machine, with the advantages of setting up belt tensioning structure, reduce the sliding of belt.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of tension structure of engine pulley of spraying machine, including rack and the engine being arranged on rack, the output shaft of engine is coaxially fixed with pulley one, the input end of the gearbox is coaxially fixed with pulley two, pulley one and pulley two are connected by annular belt, the rack is equipped with the compression member that makes annular belt be compressed on pulley one and pulley two.

[0008] By adopting the above technical scheme, the annular belt on pulley one and pulley two is compressed on pulley one and pulley two by compression member, the covering area of annular belt with pulley one and pulley two is increased, the sliding condition is reduced, and the contact between annular belt and pulley one and pulley two is more closely ensured, the transmission efficiency and stability are improved.

[0009] Preferably, the pressing member comprises two oppositely distributed vertical plates arranged on the frame, a swing plate is rotatably connected to each of the two vertical plates, the two swing plates are connected by a rotating shaft at the end away from the vertical plates, a pressing wheel is coaxially rotatably connected to the rotating shaft, and a contact member is arranged on the vertical plate to make the pressing wheel contact the annular belt.

[0010] Preferably, the contact member comprises a driven shaft rotatably connected between the two vertical plates and a driving shaft fixedly connected between the two swing plates, the driving shaft is located below one side of the pressing wheel, a rotating cylinder is sleeved on the outer wall of the driving shaft, the rotating cylinder is rotatably connected to the driving shaft, a driven rod is arranged on the outer wall of the rotating cylinder and penetrates through the driven shaft, a compression spring is sleeved on the outer wall between the sleeve and the driven shaft, and the two ends of the compression spring are fixedly connected to the sleeve and the driven shaft, respectively, and the compression spring is in a compressed state when the pressing wheel contacts the annular belt.

[0011] Preferably, the output end of the gearbox is connected to the pesticide spraying pump.

[0012] Preferably, the two swing plates are located on the opposite sides of the two vertical plates, and the two swing plates are connected by a connecting pipe, the two ends of the connecting pipe are fixedly connected to the two swing plates, respectively, and the two ends of the connecting pipe penetrate through the swing plates, a connecting rod is rotatably connected to the inner wall of the connecting pipe, and the two ends of the connecting rod are fixedly connected to the two vertical plates, respectively.

[0013] Preferably, the upper end of the vertical plate is an arc surface, a plurality of connecting holes for the connecting rod to enter are arranged along the curvature of the arc surface on the two vertical plates, the end of the connecting rod penetrates through the connecting hole, and a locking block that contacts the plate surface of the vertical plate is threadedly connected to the penetrating end.

[0014] Preferably, one of the locking blocks is fixedly connected to the end of the connecting rod and is prismatic, and an embedding groove is arranged on the vertical plate for the prismatic locking block to partially embed.

[0015] The annular belt on the belt pulley one and the belt pulley two is pressed by the pressing member, the covering area of the annular belt on the belt pulley one and the belt pulley two is increased, the slipping condition is reduced, the contact between the annular belt and the belt pulley one and the belt pulley two is more closely ensured, and the efficiency and stability of the transmission are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 It is a structural schematic view for embodying the stand of the embodiment;

[0018] Figure 2 It is a structural schematic view for embodying the stand of the embodiment;

[0019] Figure 3 It is a structural schematic view for embodying the stand of the embodiment;

[0020] Figure 4 It is a structural schematic view for embodying the stand of the embodiment;

[0021] Figure 5 It is a structural schematic view for embodying the stand of the embodiment.

[0022] Explanation of reference signs:

[0023] In the figure: 1, rack; 11, engine; 111, pulley one; 12, support; 13, gearbox; 131, pulley two; 132, ring belt; 14, stand; 141, swing plate; 142, rotating shaft; 143, compression roller; 144, driven shaft; 145, driving shaft; 146, rotating drum; 147, driven rod; 15, connecting pipe; 151, connecting rod; 16, connecting hole; 161, locking block; 162, embedded groove; 2, pesticide spraying pump. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] A tensioning structure of an engine pulley of a pesticide spraying machine, like Figure 1 and Figure 2 , comprises a rack 1 and an engine 11 arranged on the rack 1, a pulley one 111 is coaxially fixed on an output shaft of the engine 11, a gearbox 13 is arranged on the rack 1, and the gearbox 13 is located below the engine 11, like Figure 4At this time, the support 12 is arranged on the frame 1, so that the support 12 supports the engine 11, the gearbox 13 is located on the frame 1 and below the support 12, the support 12 is a reversed U-shaped plate, both vertical edges are located on both sides of the gearbox 13 and are fixedly connected with the frame 1, a belt pulley two 131 is coaxially arranged on the input end of the gearbox 13, the belt pulley one 111 and the belt pulley two 131 are connected through the annular belt 132, and the frame 1 is provided with a pressing member for pressing the annular belt 132 on the belt pulley one 111 and the belt pulley two 131. Figure 3 The output end of the gearbox 13 is connected with the pesticide spraying pump 2, the pesticide spraying pump 2 is a plunger pump, the pesticide spraying pump 2 can be directly connected with the output end of the gearbox 13 or can be connected through a chain and sprocket transmission, at this time, the rotating power provided by the engine 11 is transmitted to the pesticide spraying pump 2 through the gearbox 13. When the gearbox 13 is not arranged, the belt pulley two 131 is arranged on the input end of the pesticide spraying pump 2, so that the engine 11 directly drives the pesticide spraying pump 2 to work.

[0026] As shown in Figure 1 and Figure 2 , the pressing member presses the annular belt 132 on the belt pulley one 111 and the belt pulley two 131, increases the wrapping area of the annular belt 132 on the belt pulley one 111 and the belt pulley two 131 respectively, reduces the occurrence of slip, and ensures that the contact between the annular belt 132 and the belt pulley one 111 and the belt pulley two 131 is more closely, thereby improving the transmission efficiency and stability.

[0027] As shown in Figure 2 and Figure 5 , the pressing member includes two opposite vertical plates 14 arranged on the frame 1, the two vertical plates 14 are located on one side of the belt pulley two 131, the two vertical plates 14 are both rotationally connected with a swing plate 141, the two swing plates 141 are connected through a rotating shaft 142 at the ends away from the vertical plates 14, both ends of the rotating shaft 142 are fixedly connected with the two swing plates 141, a pressing wheel 143 is coaxially rotationally connected on the rotating shaft 142, and the vertical plate 14 is provided with an abutting member for abutting the pressing wheel 143 on the annular belt 132. The abutting member makes the pressing wheel 143 abut on the annular belt 132, so that the annular belt 132 wraps on the belt pulley one 111 and the belt pulley two 131, at this time, the pressing wheel 143 is close to the belt pulley one 111, so that the rotating power output by the engine 11 is stably transmitted to the belt pulley two 131.

[0028] As shown in Figure 2 and Figure 5The abutting member comprises a driven shaft 144 rotatably connected between the two vertical plates 14 and a driving shaft 145 fixedly connected between the two swing plates 141. The driven shaft 144 is distributed close to the rotatable connection points of the two swing plates 141 and the vertical plates 14. The driving shaft 145 is located below one side of the pressing wheel 143. A rotating cylinder 146 is sleeved on the outer wall of the driving shaft 145. The rotating cylinder 146 is rotatably connected with the driving shaft 145, that is, the rotating cylinder 146 can rotate on the outer wall of the driving shaft 145. The outer wall of the rotating cylinder 146 is provided with a driven rod 147 penetrating through the driven shaft 144. The driven rod 147 is sleeved with a compression spring (not shown in the figure) on the outer wall between the sleeve and the driven shaft 144. The two ends of the compression spring are fixed on the sleeve and the driven shaft 144 respectively. When the pressing wheel 143 abuts on the annular belt 132, the compression spring is in a compressed state.

[0029] As Figure 2 and Figure 5 That is, the compression spring provides a pressing force, so that the pressing wheel 143 on the swing plate 141 abuts on the annular belt 132. When the annular belt 132 is loose, the pressing force of the compression spring makes the swing plate 141 rotate around the rotatable connection point with the vertical plate 14, thereby making the pressing wheel 143 abut on the annular belt 132, so that the annular belt 132 is tensioned again. At this time, the sleeve rotates on the driving shaft 145, driving the driven rod 147 to rotate, and the driven shaft 144 also rotates.

[0030] As Figure 2 and Figure 5 The rotatable connection between the two swing plates 141 and the two vertical plates 14 is as follows: the two swing plates 141 are located on the opposite sides of the two vertical plates 14 and connected through a connecting pipe 15 between the two swing plates 141. The two ends of the connecting pipe 15 are fixed with the two swing plates 141 respectively. The two ends of the connecting pipe 15 penetrate through the side surfaces of the two swing plates 141 away from each other. A connecting rod 151 is rotatably connected in the inner wall of the connecting pipe 15. The two ends of the connecting rod 151 are fixedly connected with the two vertical plates 14 respectively.

[0031] As Figure 2 and Figure 5 The upper end of the vertical plate 14 is an arc surface. A plurality of connecting holes 16 for the connecting rod 151 to enter are formed along the curvature of the arc surface of the two vertical plates 14. The end of the connecting rod 151 penetrates through the connecting hole 16 and is threadedly connected with a locking block 161 abutting on the plate surface of the vertical plate 14.

[0032] As Figure 2 and Figure 5, the connecting rod 151 can move and rotate in the connecting pipe 15, when two swing plates 141 are needed to be installed on two vertical plates 14, the connecting rod 151 is inserted into the connecting pipe 15 from one connecting hole 16, and finally inserted into the connecting pipe 15 from the last connecting hole 16, the locking block 161 is rotated, the locking block 161 moves on the connecting rod 151 until the locking block 161 is in contact with the surface of the vertical plate 14, thereby limiting the position of the connecting rod 151, at this time, the connecting pipe 15 is rotated on the connecting rod 151, and the two swing plates 141 are located between the two vertical plates 14, which facilitates the installation and disassembly of the swing plate 141.

[0033] As Figure 2 and Figure 5 One of the locking blocks 161 is fixedly connected with the end of the connecting rod 151 and is prismatic, and the vertical plate 14 is provided with an embedding groove 162 for embedding the prismatic locking block 161, the purpose of the design is to limit the rotation of the connecting rod 151 after the prismatic locking block 161 cooperates with the embedding groove 162 of the vertical plate 14, thereby making the position of the connecting rod 151 stable when the connecting rod 151 is fixed between the two vertical plates 14.

[0034] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies thereof, the present application also intends to include these modifications and variations.

Claims

1. A tensioning structure of an engine pulley of a pesticide spraying machine, comprising a frame (1) and an engine (11) arranged on the frame (1), a pulley one (111) is coaxially arranged on an output shaft of the engine (11), characterized in that, The rack (1) is provided with a gearbox (13), the gearbox (13) is located below the engine (11), a pulley (131) is coaxially fixed on the input end of the gearbox (13), the pulley (111) and the pulley (131) are connected through an annular belt (132), and the rack (1) is provided with a pressing member for pressing the annular belt (132) on the pulley (111) and the pulley (131); The pressing member comprises two opposite standing plates (14) arranged on the rack (1), the two standing plates (14) are both rotatably connected with a swing plate (141), the two swing plates (141) are connected through a rotating shaft (142) at the ends away from the standing plates (14), the rotating shaft (142) is coaxially rotatably connected with a pressing wheel (143), and the standing plate (14) is provided with an abutting member for abutting the pressing wheel (143) on the annular belt (132).

2. The tensioning structure of the engine pulley of a pesticide spraying machine according to claim 1, characterized in that, The abutting member comprises a driven shaft (144) rotatably connected between the two standing plates (14) and a driving shaft (145) fixedly connected between the two swing plates (141), the driving shaft (145) is located below one side of the pressing wheel (143), a rotating cylinder (146) is arranged on the outer wall of the driving shaft (145) and rotatably connected with the driving shaft (145), the rotating cylinder (146) is provided with a driven rod (147) penetrating through one end of the driven shaft (144), a compression spring is arranged on the outer wall between the sleeve and the driven shaft (144) and arranged on the sleeve and the driven shaft (144) at both ends, and when the pressing wheel (143) abuts on the annular belt (132), the compression spring is in a compressed state.

3. The tensioning structure of the engine pulley of a spraying machine according to claim 1, characterized in that, The output end of the gearbox (13) is connected with a pesticide spraying pump (2).

4. The tensioning structure of the engine pulley of a pesticide spraying machine according to claim 2, characterized in that, The two swing plates (141) are located on the opposite sides of the two standing plates (14) and connected through a connecting pipe (15), the two ends of the connecting pipe (15) are fixedly connected with the two swing plates (141), the two ends of the connecting pipe (15) penetrate through the swing plates (141), a connecting rod (151) is rotatably connected to the inner wall of the connecting pipe (15), and the two ends of the connecting rod (151) are fixedly connected with the two standing plates (14).

5. The tensioning structure of the engine pulley of a pesticide spraying machine according to claim 4, characterized in that, The upper end of the standing plate (14) is an arc surface, a plurality of connecting holes (16) for the connecting rod (151) to enter are formed on the standing plate (14) along the curvature of the arc surface, the end of the connecting rod (151) penetrates through the connecting hole (16), and a locking block (161) abutting against the plate surface of the standing plate (14) is threadedly connected to the penetrating end.

6. The tensioning structure of the engine pulley of a pesticide spraying machine according to claim 5, characterized in that, One of the locking blocks (161) is fixedly connected with the end of the connecting rod (151) and has a prismatic shape, and the standing plate (14) is provided with an embedding groove (162) for embedding part of the prismatic locking block (161).

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