Intermediate transmission case of double-shaft rotary cultivator

Abstract

The utility model discloses an intermediate transmission case of a double-shaft rotary cultivator, which comprises a case body, and a ventilation cap is arranged at the top of the case body; an input bevel gear assembly, a two-shaft assembly, a long intermediate shaft assembly, a short intermediate shaft assembly, a front output shaft assembly and a rear output shaft assembly are arranged in the box body. The input bevel gear assembly is in meshing transmission connection with the two-shaft assembly, the two-shaft assembly is in meshing transmission connection with the long intermediate shaft assembly, the long intermediate shaft assembly is in meshing transmission connection with the short intermediate shaft assembly and the front output shaft assembly, and the short intermediate shaft assembly is in meshing transmission connection with the rear output shaft assembly. By arranging the ventilation cap, when the rotary cultivator performs rotary tillage operation, lubricating oil can be heated, hot air is discharged through the ventilation cap, and the situation that an oil seal is rushed out due to thermal expansion of the lubricating oil, and consequently a transmission case leaks oil is prevented; by arranging the detachable input bevel gear assembly and the two-shaft assembly and replacing an input bevel gear shaft and a bevel gear in the two-shaft assembly, the transmission speed can be changed, and the PTO rotating speed of a tractor of a user can be better adapted.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, concretely relates to a double axle rotary cultivator middle transmission case. BACKGROUND

[0002] With the adjustment of agricultural industrial structure of our country, land intensive management, single land planting area increases unceasingly, and the single speed rotary cultivator is not only low in efficiency, but also poor in adaptability to soil. Under this background, the high efficiency, strong adaptability rotary cultivator is replacing the existing single speed rotary cultivator and becoming the mainstream of farmland tillage. At present, horizontal rotary cultivator is mostly used in agricultural production, and the power transmission mainly has middle transmission case and side transmission gear case, because the double axle middle transmission case has the advantages such as compact structure, uniform soil crushing, good ground surface leveling effect, gradually replaces the rotary cultivator of side gear case transmission.

[0003] The defects of the rotary cultivator in the market at present are as follows:

[0004] 1. The side gear case sealing part will appear oil leakage phenomenon;

[0005] 2. The single speed cutter shaft is difficult to meet the tillage requirements of various soils. UTILITY MODEL CONTENTS

[0006] The utility model discloses a double axle rotary cultivator middle transmission case to solve the problems of the prior art.

[0007] In order to achieve the above object, the utility model adopts the technical scheme: a double axle rotary cultivator middle transmission case, including the box, its innovation point lies in: the top of the box is provided with a breather cap;The input bevel gear assembly, two axle assemblies, long middle axle assemblies, short middle axle assemblies, front output shaft assemblies and rear output shaft assemblies are arranged in the box respectively;The input bevel gear assembly is engaged with the two axle assemblies, the two axle assemblies are engaged with the long middle axle assemblies, the long middle axle assemblies are engaged with the short middle axle assemblies and the front output shaft assemblies respectively, and the short middle axle assemblies are engaged with the rear output shaft assemblies;The input bevel gear assembly includes an input bevel gear shaft, the outer part of the input bevel gear shaft is sleeved with a bearing sleeve, a bearing, a locking washer, an oil seal and a shaft cover respectively, and forms an input bevel gear assembly, the outer side of the bearing sleeve is fixed on the box through bolts, and the input bevel gear shaft is engaged with the two axle assemblies;The two axle assemblies include a two axle, the two axle is sleeved with a bevel gear, a two axle gear and a spacer respectively, the bevel gear is engaged with the input bevel gear shaft, the two axle gear is engaged with the long middle axle assemblies, bearings are arranged on the left and right sides of the two axle, and the bearings are fixed in the box through bearing covers and bolts.

[0008] Further, the long intermediate shaft assembly comprises a long intermediate shaft, a long shaft gear is sleeved on the long intermediate shaft, the long shaft gear is respectively meshed and drivingly connected with the two shaft gears, the short intermediate shaft assembly and the front output shaft assembly, bearings are arranged on the left and right sides of the long intermediate shaft, and the long intermediate shaft is fixed in the box body through the bearing cover and bolts.

[0009] Further, the short intermediate shaft assembly comprises a short intermediate shaft, a short shaft gear is sleeved on the short intermediate shaft, the short shaft gear is respectively meshed and drivingly connected with the long shaft gear and the rear output shaft assembly, bearings are arranged on the left and right sides of the short intermediate shaft, and the short intermediate shaft is fixed in the box body through the bearing cover and bolts.

[0010] Further, the front output shaft assembly comprises a front output shaft, a front output gear, a front bearing, a front dustproof ring and a front side bearing cover are respectively sleeved on the front output shaft, the front output gear is meshed and drivingly connected with the long shaft gear, the front side bearing cover is fixed on the box body through bolts, front tool shaft connecting sleeves are respectively sleeved on the left and right sides of the front output shaft, and the front tool shaft connecting sleeves are connected with the tool shaft assembly.

[0011] Further, the rear output shaft assembly comprises a rear output shaft, a rear output gear, a rear bearing, a rear dustproof ring and a rear side bearing cover are respectively sleeved on the rear output shaft, the rear output gear is meshed and drivingly connected with the short shaft gear, the rear side bearing cover is fixed on the box body through bolts, rear tool shaft connecting sleeves are respectively sleeved on the left and right sides of the rear output shaft, and the rear tool shaft connecting sleeves are connected with the tool shaft assembly.

[0012] Further, the box body is provided with a heat dissipation rib plate outside.

[0013] After the above structure is adopted, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model discloses a breathable cap is arranged, when the rotary cultivator carries out rotary tillage, lubricating oil liquid can heat, hot gas is discharged through the breathable cap, prevents oil seal from being hit and making the transmission case leak oil because of the expansion of lubricating oil liquid heated,

[0015] 2. The utility model discloses a detachable input bevel gear assembly and two axle assemblies are arranged, and the input bevel gear shaft and bevel gear in it are replaced, and the transmission speed can be changed, and the PTO rotating speed of the tractor of the user can be better adapted to, and the tractor with PTO of 540rpm, 760rpm and 1000rpm can be matched.

[0016] 3. The utility model discloses that the box body is provided with a heat dissipation rib plate outside, and the heat dissipation effect is further improved, and the transmission case is prevented from leaking oil because of the overheating of lubricating oil liquid when working. DRAWINGS

[0017] Figure 1 Structure diagram of the utility model;

[0018] Figure 2 Structure diagram of the utility model; Figure 1 Sectional view of D-D;

[0019] Figure 3 Structure diagram of the utility model; Figure 1 Sectional view of C-C;

[0020] Figure 4 Structure diagram of the utility model; Figure 1 Sectional view of B-B.

[0021] Explanation of reference signs:

[0022] 1 box, 2 breathable cap, 3 input bevel gear assembly, 31 input bevel gear shaft, 32 bearing sleeve, 33 bearing, 34 locking washer, 35 oil seal, 36 shaft cover, 4 two shaft assembly, 41 two shaft, 42 bevel gear, 43 two shaft gear, 44 spacer sleeve, 5 long intermediate shaft assembly, 51 long intermediate shaft, 52 long shaft gear, 6 short intermediate shaft assembly, 61 intermediate shaft, 62 short shaft gear, 7 front output shaft assembly, 71 front output shaft, 72 front output gear, 73 front bearing, 74 front dust seal, 75 front side bearing cover, 76 front arbor connecting sleeve, 8 rear output shaft assembly, 81 rear output shaft, 82 rear output gear, 83 rear bearing, 84 rear dust seal, 85 rear side bearing cover, 86 rear arbor connecting sleeve. DETAILED DESCRIPTION

[0023] The utility model will be further described in connection with the drawings.

[0024] In order to make the utility model purposes, technical scheme and advantages more clearly, the following is combined with the drawings and specific embodiment, and the utility model is further detailed.The specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.

[0025] Refer to Figures 1-4The utility model provides a kind of double-shaft rotary cultivator middle transmission case, including box 1, the top of box 1 is provided with air-permeable cap 2;Box 1 is provided with input bevel gear assembly 3, two-shaft assembly 4, long middle shaft assembly 5, short middle shaft assembly 6, front output shaft assembly 7 and rear output shaft assembly 8 respectively;Input bevel gear assembly 3 engages transmission connection two-shaft assembly 4, two-shaft assembly 4 engages transmission connection long middle shaft assembly 5, long middle shaft assembly 5 is respectively engaged transmission connection short middle shaft assembly 6 and front output shaft assembly 7, short middle shaft assembly 6 engages transmission connection rear output shaft assembly 8;Input bevel gear assembly 3 includes input bevel gear shaft 31, the outside of input bevel gear shaft 31 is respectively sleeved bearing sleeve 32, bearing 33, locking washer 34, oil seal 35 and shaft cover 36, and forms input bevel gear assembly, the outside of bearing sleeve 33 is fixed on box 1 by bolt, and input bevel gear shaft 31 is engaged transmission connection with two-shaft assembly 4;Two-shaft assembly 4 includes two-shaft 41, and two-shaft 41 is respectively sleeved bevel gear 42, two-shaft gear 43 and spacer 44, bevel gear 42 is engaged transmission connection with input bevel gear shaft 31, two-shaft gear 43 is engaged transmission connection with long middle shaft assembly 5, and two-shaft 41 left and right sides are provided with bearing, and are fixed in box by bearing cover and bolt.Specifically, by disassembling input bevel gear assembly 3 and two-shaft assembly 4, then replacing input bevel gear shaft 31 and bevel gear 42, can match 3 kinds of PTO speed (540rpm, 760rpm and 1000rpm), so that rotary cultivator is suitable for rotary tillage operation to multiple soil (wheat stubble, rice stubble, after ploughing), and work efficiency is high, and transmission is stable and reliable;When replacing input bevel gear shaft 31, shaft cover 36, oil seal 35, locking washer 34, bearing and bearing sleeve 32 need to be sequentially removed, then input bevel gear shaft 31 is replaced;When replacing bevel gear 42, two side bearing covers are removed, then the cover plate on the top of box is removed, then two-shaft is taken out, then bevel gear 42 is replaced;Transmission case is provided with air-permeable cap 2, and lubricating oil is heated when rotary cultivator carries out rotary tillage operation, and hot gas is discharged through air-permeable cap, to prevent oil seal from being hit out and causing transmission case to leak oil due to the expansion of lubricating oil by heating.

[0026] Referring to Figure 3 Long middle shaft assembly 5 includes long middle shaft 51, and long shaft gear 52 is sleeved on long middle shaft 51, and long shaft gear 52 is engaged transmission connection with two-shaft gear 43, short middle shaft assembly 6 and front output shaft assembly 7 respectively, and long middle shaft 51 left and right sides are provided with bearing, and are fixed in box by bearing cover and bolt.Long shaft gear 52 obtains transmission force from two-shaft gear 43, and transmission force is delivered to short middle shaft assembly 6 and front output shaft assembly 7, so that both of them rotate.

[0027] Referring to Figure 3The short intermediate shaft assembly 6 comprises a short intermediate shaft 61, a short shaft gear 62 is sleeved on the short intermediate shaft 61, the short shaft gear 62 is respectively meshed and drivingly connected with the long shaft gear 52 and the rear output shaft assembly 8, bearings are arranged on the left and right sides of the short intermediate shaft 62, and the bearings are fixed in the box through bearing covers and bolts. The short shaft gear 62 obtains driving force from the long shaft gear 52, and then is transmitted to the rear output shaft assembly 8, so that the rear output shaft assembly 8 rotates.

[0028] Referring to Figure 4 The front output shaft assembly 7 comprises a front output shaft 71, a front output gear 72, a front bearing 73, a front dustproof ring 74 and a front side bearing cover 75 are sleeved on the front output shaft 71 respectively, the front output gear 72 is meshed and drivingly connected with the long shaft gear 52, the front side bearing cover 75 is fixed on the box 1 through bolts, front tool shaft connecting sleeves 76 are sleeved on the left and right sides of the front output shaft 71 respectively, and a tool shaft assembly is connected with the front tool shaft connecting sleeves 76. The front output gear 72 obtains driving force from the long shaft gear 52, and drives the front output shaft 71 to rotate, so as to drive the front tool shaft connecting sleeves 76 to rotate.

[0029] Referring to Figure 3 The rear output shaft assembly 8 comprises a rear output shaft 81, a rear output gear 82, a rear bearing 83, a rear dustproof ring 84 and a rear side bearing cover 85 are sleeved on the rear output shaft 81 respectively, the rear output gear 82 is meshed and drivingly connected with the short shaft gear 62, the rear side bearing cover 85 is fixed on the box 1 through bolts, rear tool shaft connecting sleeves 86 are sleeved on the left and right sides of the rear output shaft 81 respectively, and a tool shaft assembly is connected with the rear tool shaft connecting sleeves 86. The rear output gear 82 obtains driving force from the short shaft gear 62, and drives the rear output shaft 81 to rotate, so as to drive the rear tool shaft connecting sleeves 86 to rotate.

[0030] In the embodiment, heat dissipation rib plates are arranged on the outer side of the box 1 (not shown in the figure), so as to further improve the heat dissipation effect and prevent oil leakage due to overheating of lubricating oil during operation of the transmission box.

[0031] The above description is only used to illustrate the technical scheme of the utility model and is not limited, and other modifications or equivalent replacements of the technical scheme of the utility model made by those skilled in the art should be covered in the claim range of the utility model.

Claims

1. A two-axle rotary cultivator intermediate gearbox comprising a housing, characterised in that: The top of the box is provided with a breathable cap; the box is respectively provided with an input bevel gear assembly, a two-shaft assembly, a long intermediate shaft assembly, a short intermediate shaft assembly, a front output shaft assembly and a rear output shaft assembly; the input bevel gear assembly is engaged and drivingly connected with the two-shaft assembly, the two-shaft assembly is engaged and drivingly connected with the long intermediate shaft assembly, the long intermediate shaft assembly is respectively engaged and drivingly connected with the short intermediate shaft assembly and the front output shaft assembly, and the short intermediate shaft assembly is engaged and drivingly connected with the rear output shaft assembly; the input bevel gear assembly comprises an input bevel gear shaft, the outer part of the input bevel gear shaft is respectively sleeved with a bearing sleeve, a bearing, a locking gasket, an oil seal and a shaft cover, and forms the input bevel gear assembly, the outer side of the bearing sleeve is fixed on the box by bolts, and the input bevel gear shaft is engaged and drivingly connected with the two-shaft assembly; the two-shaft assembly comprises a two-shaft, the two-shaft is respectively sleeved with a bevel gear, a two-shaft gear and a spacer sleeve, the bevel gear is engaged and drivingly connected with the input bevel gear shaft, the two-shaft gear is engaged and drivingly connected with the long intermediate shaft assembly, bearings are arranged on the left and right sides of the two-shaft, and the two-shaft is fixed in the box by bearing covers and bolts.

2. A dual axle rotary cultivator intermediate transmission housing as claimed in claim 1, wherein: The long intermediate shaft assembly comprises a long intermediate shaft, the long intermediate shaft is sleeved with a long shaft gear, the long shaft gear is respectively engaged and drivingly connected with the two-shaft gear, the short intermediate shaft assembly and the front output shaft assembly, bearings are arranged on the left and right sides of the long intermediate shaft, and the long intermediate shaft is fixed in the box by bearing covers and bolts.

3. A two-axle rotary cultivator intermediate gearbox according to claim 1 or 2, characterised in that: The short intermediate shaft assembly comprises a short intermediate shaft, the short intermediate shaft is sleeved with a short shaft gear, the short shaft gear is respectively engaged and drivingly connected with the long shaft gear and the rear output shaft assembly, bearings are arranged on the left and right sides of the short intermediate shaft, and the short intermediate shaft is fixed in the box by bearing covers and bolts.

4. A two-axle rotary cultivator intermediate gearbox according to claim 1 or 2, characterised in that: The front output shaft assembly comprises a front output shaft, the front output shaft is respectively sleeved with a front output gear, a front bearing, a front dust ring and a front side bearing cover, the front output gear is engaged and drivingly connected with the long shaft gear, the front side bearing cover is fixed on the box by bolts, front tool shaft connecting sleeves are respectively sleeved on the left and right sides of the front output shaft, and the front tool shaft connecting sleeves are connected with tool shaft assemblies.

5. A dual axle rotary cultivator intermediate transmission housing as claimed in claim 3, wherein: The rear output shaft assembly comprises a rear output shaft, the rear output shaft is respectively sleeved with a rear output gear, a rear bearing, a rear dust ring and a rear side bearing cover, the rear output gear is engaged and drivingly connected with the short shaft gear, the rear side bearing cover is fixed on the box by bolts, rear tool shaft connecting sleeves are respectively sleeved on the left and right sides of the rear output shaft, and the rear tool shaft connecting sleeves are connected with tool shaft assemblies.

6. A dual axle rotary cultivator intermediate transmission housing as claimed in claim 1, wherein: The outer side of the box is provided with a heat dissipation rib plate.

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