CN102379170A - Novel harrow section of scarification equipment - Google Patents

Abstract

The invention relates to a novel rake group of a soil preparation machine, in particular to a heavy-duty land preparation machine rake group which is easy to meet the design requirements of serialized products and is easy to maintain. The invention is mainly composed of rake blades, bearing support arms, bearing seat assemblies, square shafts, soil scraping devices, interpipes, rake group beams, pressure plates, lock nuts and other parts. The rake group beam is composed of two to three square tubes. The bearing arm is installed on the rake group beam through a pressure plate and four bolts. A pair of tapered roller bearings with a circular inner hole are used in the bearing seat assembly, and the square shaft Both ends are secured with lock nuts. The advantages are: easy installation, disassembly, maintenance and adjustment of the parts on the harrow group, good sealing performance of the bearing, and reliable operation; the number of harrow blades can be easily increased, the parts are highly versatile, and the manufacturing cost is low.

Description

A New Type of Rake Group of Land Preparation Machine

technical field

The invention relates to a novel rake group of a soil preparation machine, in particular to a heavy-duty land preparation machine rake group which is easy to meet the design requirements of serialized products and is easy to maintain, and belongs to the technical field of agricultural machinery.

Background technique

Soil preparation is one of the most important operations in agricultural production. Disc harrows have good functions of loosening soil, breaking soil and removing stubble. Not only are they often used for land preparation after plowing, but they can also be used for shallow plowing and stubble removal, and sub-plowing with harrows. Currently, they are used in combined soil preparation machines, compound cultivators, circular It is widely used in land preparation machinery such as disk harrow. As an important working part of the land preparation machine, the harrow group is subjected to relatively large resistance during work, and its structural design has an important impact on the operation performance, reliability and convenience of maintenance of the entire machine tool. At present, the bearing inner ring of the rake group of general structure in my country is a square hole, and the hole on the rake group beam is generally used to locate the bearing support arm, and one end of the square shaft is usually forged into a hemispherical shape for positioning. The disadvantages brought by this method are: there is a certain gap between the square shaft and the inner hole of the bearing in the radial direction, and the bearing is likely to bear the pre-added axial force due to the accumulation of machining errors, the force situation will obviously deteriorate, and the service life will be longer. Short, and the processing technology of the parts is complicated, which requires high manufacturing precision, which is not conducive to reducing production costs and improving work reliability.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art, and propose a disc harrow group that is easy to install, maintain and adjust, has strong versatility and is more reliable in use.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a new type of rake group of soil preparation machinery, mainly composed of rake blades, bearing arms, bearing seat assemblies, square shafts, intermediate pipes, soil scraping devices, and rake group beams. , pressure plate and lock nut and other components. The rake blades are worn on the square shaft and separated by spacers. The bearing seat assembly is connected with the bearing arm by two bolts, and the bearing arm is installed on the crossbeam of the rake group through the pressure plate and four bolts.

For the above-mentioned harrow group, in order to facilitate maintenance, both ends of the square shaft are limited by lock nuts. The parts on the harrow group are very convenient to disassemble, repair and maintain, and the processing technology of forging hemispherical positioning ends is omitted, reducing processing costs.

For the aforementioned harrow group, in order to easily meet the design requirements of serialized products, the rake group beam is composed of two to three square tubes. When the number of rake blades is small, use two square tubes; square tube. Protrusions are welded on the beam of the rake group to limit the axial position of the bearing arm.

For the aforementioned rake group, in order to improve the stress condition of the bearing, the bearing seat assembly is composed of a square shaft sleeve shaft, an end cover, a bearing seat, a bearing and an oil seal. The inner hole of the square shaft sleeve shaft is square, and is set on the Above, the bearings used are a pair of ordinary tapered roller bearings.

For the aforementioned rake group, in order to improve the scraping effect of the scraper device and reduce the molding process of the scraper, the scraper device is composed of a scraper, a scraper beam and a limit pressure plate, and the scraper beam is two The flat steel, the grooves of the moldboard and the limit pressure plate are respectively stuck under and above the crossbeam of the moldboard, and the three are connected with bolts. Loosen the bolts, and the axial position of a single moldboard can be easily adjusted to achieve a proper scraping clearance with the harrow blade.

For the above-mentioned harrow group, the number of harrow blades installed is generally 7 to 11 pieces.

Compared with the prior art, the present invention has the advantages that: a pair of ordinary tapered roller bearings are installed in the bearing seat of the rake group, which can improve the stress situation of the bearings and increase the service life of the bearings; The axial distance can be easily adjusted, which reduces the molding process of the moldboard; the beam of the rake group can be composed of 2 or 3 square tubes, and the parts on the square shaft can be installed and disassembled from both ends of the square shaft, and the versatility of each part is very high , easy to reduce production costs, simple and convenient maintenance, and can meet the design requirements of serialized products.

Description of drawings

Accompanying drawing 1 is the front view of the present invention.

Accompanying drawing 2 is the side view of the present invention.

Accompanying drawing 3 is the partial enlarged view of bearing housing assembly in accompanying drawing 1.

Accompanying drawing 4 is the assembling schematic diagram of soil scraping device in accompanying drawing 1.

Accompanying drawing 5 is the lateral arrangement diagram of 7 rake sheet rake groups.

Accompanying drawing 6 is the lateral arrangement diagram of 11 rake blade rake groups.

In the figure: 1. Rake piece, 2. Bearing support arm, 3. Bearing seat assembly, 4. Square shaft, 5. Intertube, 6. Soil scraping device, 7. Rake group beam, 8. Press plate, 9. Lock Tight nut; 3-1. Square shaft sleeve shaft, 3-2. End cover, 3-3. Bearing seat, 3-4. Bearing, 3-5. Oil seal; 6-1. Scraper board, 6-2. Moldboard beam, 6-3. Limiting pressure plate.

Detailed ways

The specific embodiment of the present invention is described below in conjunction with accompanying drawing:

As shown in Figures 1 and 2, the new rake group of the present invention is mainly composed of rake blade (1), bearing support arm (2), bearing seat assembly (3), square shaft (4), intermediate pipe (5), scraper It is composed of soil device (6), rake group beam (7), pressing plate (8) and lock nut (9). The bearing seat assembly (3) is connected with the bearing support arm (2) through two bolts, and the bearing support arm (2) is installed under the rake group beam (7) through the pressure plate (8) and four bolts, and the soil scraping device (6 ) is installed at the rear of the crossbeam (7) of the rake group, and both ends of the square shaft (4) are fixed with lock nuts (9). The rake group beam (7) is composed of two or three square tubes stuck in four bolts. The connection between the bearing support arm (2) and the rake group beam (7) is not positioned with holes, so the same rake group The axial position of the upper bearing arm (2) can be adjusted arbitrarily. When working, the rake group works at a certain deflection angle, and the bearing arm (2) will be subjected to an axial force. For this reason, a protrusion is welded on the rake group beam (7) to limit the axis of the bearing arm (2). to swipe.

As shown in Figure 3, the bearing seat assembly (3) mainly includes the square shaft sleeve shaft (3-1), the end cover (3-2), the bearing seat (3-3), the bearing (3-4) and the oil seal ( 3-5). Square shaft (4) is sleeved in the square shaft bushing (3-1), and a pair of common tapered roller bearings (3-4) are installed on the square shaft bushing (3-1), and end caps (3-4) are used at both ends. -2) Fix and seal with oil seal (3-5). The bearing seat assembly (3) has good sealing performance, can ensure a good working environment for the bearing (3-4) under harsh working conditions, and works reliably.

As shown in Figure 4, the scraper device (6) mainly includes a scraper (6-1), a scraper beam (6-2) and a limit pressure plate (6-3), and the scraper (6-1) and the groove of the limit pressing plate (6-3) are respectively stuck in the below and the top of the scraper crossbeam (6-2), and the three are connected with bolts. The scraper beam (6-2) is two flat steels. When the bolts are loosened, the axial position of the scraper (6-1) can be adjusted conveniently to achieve a proper scraping clearance between the scraper and the rake , Enhance the effect of scraping soil.

In the rake group of the present invention, the number of rake blades (1) can be increased conveniently, and generally 7 to 11 blades can be installed to meet the needs of different working widths. As shown in Figure 5, when the number of rake blades (1) is 7 pieces, two square tubes are used for the rake group beam (7), and a piece of rake blade (1) is arranged on the outer end of the bearing arm (2). As shown in Figure 6, when the number of rake blades (1) is 11, three square tubes are used for the rake group beam (7), and two rake blades (1) are arranged at the outer end of the bearing arm (2).

When different numbers of rake blades (1) are installed in the rake group, it is only necessary to change the length of the rake group beam (7) and the scraper board beam (6-2) correspondingly when cutting the material, and other parts can be used in common, so it is common It is highly reliable, easy to reduce production costs, and meets the serial design requirements of related products.

Claims (6)

1. A new type of rake group for soil preparation machinery, mainly composed of rake blade (1), bearing support arm (2), bearing seat assembly (3), square shaft (4), intermediate pipe (5), soil scraping device ( 6), rake group beam (7), pressure plate (8) and lock nut (9), etc. It is characterized in that: the rake blade (1) is worn on the square shaft (4) and separated by the intermediate pipe (5) , the bearing seat assembly (3) is connected with the bearing support arm (2) by two bolts, the bearing support arm (2) is installed on the crossbeam (7) of the rake group through the pressure plate (8) and four bolts, and the square shaft (4 ) There are lock nuts (9) at both ends to fix the limit. 2. The novel rake group according to claim 1, characterized in that: the rake group beam (7) is composed of two to three square tubes. 3. The new rake group according to claim 1, characterized in that: the bearing seat assembly (3) consists of a square shaft sleeve shaft (3-1), an end cover (3-2), and a bearing seat (3-3) , bearing (3-4) and oil seal (3-5) form, the inner hole of square shaft sleeve shaft (3-1) is square, is enclosed within on the square shaft (4). 4. The bearing housing assembly (3) according to claim 3, characterized in that each bearing housing assembly (3) comprises a pair of tapered roller bearings (3-4). 5. The new rake group according to claim 1, characterized in that: the scraper device (6) consists of a scraper (6-1), a scraper beam (6-2) and a limit pressure plate (6-3 ), the moldboard crossbeam (6-2) is two flat steel pieces, and the grooves of the moldboard (6-1) and the limit pressure plate (6-3) are respectively stuck on the moldboard crossbeam (6-2) Bolts are used to connect the three below and above. 6. The novel rake group according to claim 1, characterized in that the number of rake blades (1) is generally 7 to 11.

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