Full-gear transmission case of ditcher

Abstract

The invention discloses a ditcher full-gear transmission case which comprises a case body, and a gear containing cavity is formed in the case body; a power input mechanism is arranged in the input gear cavity, a power output mechanism is arranged at the lower end of the transmission gear cavity and comprises an output shaft, and an output gear is arranged on the output shaft. A plurality of transmission gears are arranged in the transmission gear cavity, and the power input mechanism is connected with the output gear through the transmission gears; the transmission gear is rotationally connected with the two sides of the box body through supporting shafts, supporting rings are formed in the positions, corresponding to the supporting shafts and the output shaft, of the outer side of the box body, and the two ends of the supporting shafts and the two ends of the output shaft are connected with the supporting rings through bearings. The power transmission efficiency can be effectively improved, the overall stability is better, and the service life of the transmission mechanism can be greatly prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural equipment, and in particular to a full-tooth transmission box for a trencher. Background Art

[0002] A trencher is an agricultural device used for trenching, digging or loosening soil. It is often used in orchards, vegetable gardens and other farmland environments. The transmission box of a trencher is a power transmission device that transmits the power of the power unit to the operating mechanism (tillage blade). When the trencher is working, the transmission box outputs operating power to the operating mechanism to enable the operating mechanism to perform trenching operations.

[0003] The input end of the transmission box of a common trenching machine is connected to the power device, and the output end is connected to the tiller shaft, which is connected to a knife holder or a blade. During trenching, the transmission box transmits the power of the power device to the tiller shaft, which drives the knife holder or the blade to rotate, digs out the soil and throws it out to form a trench or groove. Among them, the current transmission box mainly adopts belt drive or shaft gear drive in the power transmission process: belt drive has a simple structure, but its transmission efficiency is low, and the belt is easy to wear, and later maintenance and replacement are more troublesome; although shaft gear drive can greatly improve the stability of power transmission, when it comes into contact with hard stones during trenching, it is easy to cause deformation of the transmission shaft due to excessive load, which in turn causes gaps between the transmission teeth, thereby affecting the stability of power transmission. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problems of low transmission efficiency, poor stability and troublesome later maintenance, and to provide a trencher full-tooth transmission box that can effectively improve the power transmission efficiency and has better overall stability, which can greatly increase the service life of the transmission mechanism.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a trenching machine full-tooth transmission box, including a box body, the box body is an integrated structure, a gear accommodating cavity is formed inside the box body, the upper part of the gear accommodating cavity is expanded to form an input gear cavity, and a transmission gear cavity is formed below the input gear cavity; a power input mechanism is provided in the input gear cavity, and a power output mechanism is provided at the lower end of the transmission gear cavity, the power output mechanism includes an output shaft, and an output gear is provided on the output shaft; it is characterized in that: a plurality of transmission gears are provided in the transmission gear cavity, the power input mechanism is connected to the output gear through the transmission gear, wherein the transmission gears are meshed in sequence, and the transmission gears adjacent to the output gear are meshed with the output gear; The transmission gear is rotatably connected to both sides of the box body through a support shaft, wherein both sides of the transmission gear and the output gear are clearance-matched with the side walls of the transmission gear cavity, and support rings are formed on the outside of the box body corresponding to the positions of each support shaft and the output shaft, and both ends of the support shaft and the output shaft are connected to the support rings through bearings.

[0006] Furthermore, the power input mechanism includes an input shaft, a shift shaft, a reverse gear shaft and a transition shaft; one end of the input shaft extends out of the housing for being connected to the clutch, and the other end is connected to a driving bevel gear; a driven bevel gear and a shift gear are provided on the shift shaft, the driven bevel gear is fixedly connected to the shift shaft and meshes with the driving bevel gear, and the shift gear is slidingly connected to the shift shaft through the cooperation of a key and a keyway; a reverse gear and a driving gear are respectively provided on the reverse gear shaft and the transition shaft, the reverse gear is a double gear, and an empty sleeve is arranged on the reverse gear shaft, the driving gear is meshed with one of the gears of the reverse gear, and when the shift gear moves, it can mesh with the other gear of the reverse gear or the driving gear.

[0007] Furthermore, it also includes a shift fork and a fork shaft, wherein the shift fork is arranged on the shift gear and connected to the fork shaft, and the shift fork shaft is connected to the housing in a sliding manner, and one end of the shift fork shaft extends out of the housing and is connected to a shift handle.

[0008] Furthermore, the box body is formed by casting of ductile iron.

[0009] Furthermore, oil seals are provided on the outer sides of the support rings at both ends of each support shaft.

[0010] Furthermore, a dust cover is provided on the outer side of the support ring corresponding to the output shaft.

[0011] Compared with the prior art, the present invention has the following advantages: 1. Simple structure and easy assembly. Since there is a clearance fit between the transmission gear and the side wall of the transmission gear cavity, there is no need to worry about the meshing problem between the gears during the assembly process, so that the assembly can be carried out quickly. In addition, the box body is integrally formed, the overall structure is more stable, and the sealing effect is better.

[0012] 2. The entire transmission is completely transmitted through gears, which makes the power transmission efficiency higher and the transmission stability better. In addition, with this solution, the gearbox case of the full gear transmission structure is thinner, which can effectively avoid the situation of missing plowing, thereby further improving the efficiency of plowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 Schematic diagram of the internal structure of the box.

[0015] Figure 3 The schematic diagram of the structure of the trenching machine equipped with the present invention is shown in FIG.

[0016] In the figure: 1—housing, 2—output shaft, 3—output gear, 4—input shaft, 5—shift shaft, 6—reverse shaft, 7—transition shaft, 8—driving bevel gear, 9—driven bevel gear, 10—shift gear, 11—reverse gear, 12—driving gear, 13—transmission gear, 14—support ring, 15—bearing, 16—shift fork, 17—shift fork shaft, 18—shift handle, 19—oil seal cover, 20—dust cover. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example: See Figure 1 , Figure 2 as well as Figure 3 A full-tooth transmission box for a trenching machine includes a box body 1. The box body 1 is an integrated structure, and a gear accommodating cavity is formed inside the box body. The upper part of the gear accommodating cavity is expanded to form an input gear cavity, and a transmission gear cavity is formed below the input gear cavity. In implementation, the box body 1 is cast by ductile iron; after forming, the size can be finely trimmed according to design requirements, which can make the overall strength of the transmission box higher, and the stability and sealing are better.

[0021] A power input mechanism is provided in the input gear chamber, and a power output mechanism is provided at the lower end of the transmission gear chamber, the power output mechanism includes an output shaft 2, and an output gear 3 is provided on the output shaft 2. The power input mechanism includes an input shaft 4, a shift shaft 5, a reverse shaft 6 and a transition shaft 7. One end of the input shaft 4 extends out of the housing 1 for connecting with the clutch, and the other end is connected with a driving bevel gear 8; a driven bevel gear 9 and a shift gear 10 are provided on the shift shaft 5, the driven bevel gear 9 is fixedly connected with the shift shaft 5, and meshes with the driving bevel gear 8, the shift gear 10 is connected with the shift shaft 5 by sliding cooperation through the cooperation of the key and the keyway, and can rotate synchronously with the shift shaft 5. It also includes a shift fork 16 and a shift fork shaft 17. The shift fork 16 is arranged on the shift gear 10 and connected to the shift fork shaft 17. The shift fork shaft 17 is connected to the housing 1 in a sliding manner. One end of the shift fork shaft 17 extends out of the housing 1 and is connected to a shift handle 18. The shift fork shaft 17, the shift fork 16 and the shift gear 10 can be driven to move by the shift handle 18. The reverse gear 11 and the driving gear 12 are respectively arranged on the reverse gear shaft 6 and the transition shaft 7. The reverse gear 11 is a double gear and is arranged on the reverse gear shaft 6. The driving gear 12 is meshed with one of the gears of the reverse gear 11. When the shift gear 10 moves, it can mesh with the other gear of the reverse gear 11 or the driving gear 12.

[0022] Several transmission gears 13 are provided in the transmission gear cavity, and the power input mechanism is connected to the output gear 3 through the transmission gears 13, wherein the transmission gears 13 are meshed in sequence, the transmission gear 13 close to the power input mechanism is meshed with the driving gear 12, and the transmission gear 13 adjacent to the output gear 3 is meshed with the output gear 3.

[0023] The transmission gear 13 is rotatably connected to both sides of the housing 1 through a support shaft, wherein both sides of the transmission gear 13 and the output gear 3 are clearance-matched with the side walls of the transmission gear cavity. On the outside of the housing 1, support rings 14 are formed corresponding to the positions of each support shaft and the output shaft 2, and the two ends of the support shaft and the output shaft 2 are connected to the support rings 14 through bearings 15. Since there is a clearance fit between the transmission gear 13 and the side wall of the transmission gear cavity, there is no need to worry about the meshing problem between the gears during assembly. It is only necessary to put the output gear 3 and the transmission gear 13 into the transmission gear cavity, and then insert the support shaft from the preset shaft hole on the housing 1, so that it can be assembled quickly. An oil seal cover 19 is provided on the outside of the support ring 14 at both ends of each support shaft. A dust cover 20 is provided on the outside of the support ring 14 corresponding to the output shaft 2.

[0024] In the actual processing process, several rotating gears 13 are located in the same plane, and the two sides of the box body 1 are clearance-matched with the transmission gears 13, so that the lower part of the transmission box body can be made thin enough; at the same time, since the support shaft and the output shaft 2 are supported by the support ring 14 on the outside of the box body through molding, the bending sections of the outer ends of some blades that cooperate with the tilling tools, especially the bending sections of some blades of the tools close to the box body 1 that are bent in opposite directions, can dig trenches and loosen the soil to the greatest extent, thereby eliminating the situation of missed tillage to the greatest extent and greatly improving the tillage efficiency.

[0025] In this solution, the entire transmission is completely transmitted through gears, which makes the power transmission efficiency higher and the transmission stability better. In addition, with this solution, the gearbox case 1 with the full gear transmission structure is thinner, which can effectively avoid the situation of missed tillage, thereby further improving the efficiency of tillage.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. A full-tooth transmission box for a trenching machine, comprising a box body, the box body is an integrated structure, a gear accommodating cavity is formed inside the box body, the upper part of the gear accommodating cavity is expanded to form an input gear cavity, and a transmission gear cavity is formed below the input gear cavity; a power input mechanism is provided in the input gear cavity, and a power output mechanism is provided at the lower end of the transmission gear cavity, the power output mechanism comprises an output shaft, and an output gear is provided on the output shaft; the characteristics are: A plurality of transmission gears are arranged in the transmission gear chamber, and the power input mechanism is connected to the output gear through the transmission gears, wherein the transmission gears are meshed in sequence, and the transmission gears adjacent to the output gear are meshed with the output gear; The transmission gear is rotatably connected to both sides of the box body through a support shaft, wherein both sides of the transmission gear and the output gear are clearance-matched with the side walls of the transmission gear cavity, and support rings are formed on the outside of the box body corresponding to the positions of each support shaft and the output shaft, and both ends of the support shaft and the output shaft are connected to the support rings through bearings.

2. The trencher full-tooth transmission box according to claim 1, characterized in that: The power input mechanism comprises an input shaft, a shift shaft, a reverse shaft and a transition shaft; one end of the input shaft extends out of the housing for being connected to the clutch, and the other end is connected to a driving bevel gear; a driven bevel gear and a shift gear are provided on the shift shaft, the driven bevel gear is fixedly connected to the shift shaft and meshes with the driving bevel gear, and the shift gear is connected to the shift shaft in a sliding manner through the cooperation of a key and a keyway; a reverse gear and a driving gear are provided on the reverse shaft and the transition shaft respectively, the reverse gear is a double gear, and an empty sleeve is arranged on the reverse shaft, the driving gear is meshed with one of the gears of the reverse gear, and when the shift gear moves, it can mesh with the other gear of the reverse gear or the driving gear.

3. The trencher full-tooth transmission box according to claim 1, characterized in that: It also includes a shift fork and a fork shaft, wherein the shift fork is arranged on the shift gear and connected to the fork shaft, the shift fork shaft is connected to the housing in a sliding manner, one end of the shift fork shaft extends out of the housing and is connected to a shift handle.

4. The trencher full-tooth transmission box according to claim 1, characterized in that: The box body is formed by casting of ductile iron.

5. The trencher full-tooth transmission box according to claim 1, characterized in that: Oil seal covers are arranged on the outer sides of the support rings at both ends of each support shaft.

6. The trencher full-tooth transmission box according to claim 1, characterized in that: A dust cover is arranged on the outer side of the supporting ring corresponding to the output shaft.

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