CN219165155U

CN219165155U - Take duplex bearing fixed knot to construct's belt flail knife mechanism for lawn mower

Info

Publication number: CN219165155U
Application number: CN202223405247.0U
Authority: CN
Inventors: 徐立仁
Original assignee: Jiaxing Xinghan Robot Co ltd
Current assignee: NINGBO DAYE POWER MACHINERY CO Ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-06-13
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses a belt flail knife mechanism for a mower with a double-bearing fixing structure, which is arranged on a knife disc assembly and comprises a belt pulley assembly, a bearing fixing structure and a knife rest assembly, wherein the belt pulley assembly comprises a belt pulley and a belt pulley bolt, the bearing fixing structure comprises a cylinder sleeve upper sealing cover, a cutter shaft, a flat key, a first clamp spring, a flange cylinder sleeve, a first bearing, a second clamp spring and a cylinder sleeve lower sealing cover, the knife rest assembly comprises a knife rest fixing flange, a knife rest, a throwing blade, a knife rest fixing baffle plate, a fixing baffle plate bolt, a knife rest bolt and a sealing cover bolt, the knife disc assembly comprises a knife disc and a knife disc bolt, the cutter shaft penetrates through a center hole of the belt pulley, a center hole of the first bearing, a center hole of the second bearing and a center hole of the knife rest, the belt pulley bolt and the fixing baffle plate bolt are screwed through threaded holes at two ends of the cutter shaft to be locked and positioned, and the flange cylinder sleeve is fixed on the knife disc through the knife disc bolt. The utility model has stable centrifugal rotation movement, protects the engine and the knife rest, and improves mowing intensity and working efficiency.

Description

Take duplex bearing fixed knot to construct's belt flail knife mechanism for lawn mower

Technical Field

The utility model belongs to the technical field of garden tools, and particularly relates to a belt flail knife mechanism with a double-bearing fixing structure for a mower.

Background

With the development of society and the demands of public greenhouses, the demand of regular lawns is gradually increasing, so that a large amount of mowers are required to be put into greening construction. However, when the cutter of the mower works under complex environments such as shrubs, stones, slopes and the like, the phenomena such as flameout of an engine, deformation of a cutter rest and the like can be caused, the working period can be influenced, and the mowing efficiency can be improved.

Based on the above, the demand of regular lawns is gradually increasing, and there is a higher demand for reliability and an increase in the demand for rapid replacement of parts when working under complex environments such as shrubs, stones, slopes, and the like.

Accordingly, the present utility model has been made in view of the above problems, and an object of the present utility model is to provide a belt flail knife mechanism for a mower with a double-bearing fixing structure, which is more practical.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a belt flail knife mechanism with a double-bearing fixing structure for a mower, which aims to solve the problems that an engine is flamed out and stopped due to a large load or other resistance in the power transmission process of the flail knife, or the working environment with high toughness and too dense complex distance cannot be dealt with.

The technical scheme of the utility model is as follows: the utility model provides a take dual bearing fixed knot to construct's lawn mower belt flail knife mechanism, installs on the blade disc subassembly, it includes belt pulley subassembly, bearing fixed knot constructs and blade holder subassembly, the belt pulley subassembly includes the belt pulley and cooperates the belt pulley bolt of belt pulley, bearing fixed knot constructs including cylinder liner upper cover, arbor, flat key, first jump ring, flange cylinder liner, first bearing, second jump ring and cylinder liner lower cover, the blade holder subassembly includes blade holder flange, blade holder, throwing blade, blade holder fixed stop, fixed stop bolt, blade holder bolt and closing cap bolt, the blade disc subassembly includes the blade disc and cooperates the blade disc bolt of blade disc, the upper end of arbor passes the centre bore and the belt pulley connection of belt pulley, and the lower extreme of arbor passes the centre bore and the blade holder connection of first bearing, the centre bore and the blade holder of second bearing in proper order to screw the screw hole bolt of arbor both ends and fixed stop bolt locking location, the flange cylinder liner passes through the bolt fastening on the blade disc.

Preferably, the belt pulley is placed in a flat key through a key groove to transmit torque to the cutter shaft, and the belt pulley is fixed at the upper end of the cutter shaft through a belt pulley bolt.

Preferably, the cutter shaft passes through the centers of the first bearing, the second bearing, the first clamp spring and the second clamp spring, and the axial displacement of the cutter shaft, the first bearing and the second bearing is clamped and positioned by the first clamp spring and the second clamp spring.

Preferably, the cutter shaft, the first bearing, the second bearing, the first clamp spring and the second clamp spring are covered by the cylinder sleeve upper sealing cover, the flange cylinder sleeve and the cylinder sleeve lower sealing cover, the cylinder sleeve upper sealing cover, the flange cylinder sleeve and the cylinder sleeve lower sealing cover are connected and fixed by sealing cover bolts, and the total number of the sealing cover bolts is 8.

Preferably, the cutter shaft penetrates through the cutter frame fixing flange and is matched with the cutter frame fixing flange in a flat way, penetrates through the center hole of the cutter frame, and is locked and positioned by the cutter frame bolts through the cutter frame fixing baffle plate, and the total number of the cutter frame bolts is 6.

Preferably, the knife rest assembly is locked at the lower end of the knife shaft through a fixed baffle bolt.

Preferably, the flail blade is connected to mounting holes at two ends of the tool rest through bolts, and torque transmission is performed through the belt pulley, the cutter shaft and the tool rest respectively and synchronously.

Preferably, the first bearing and the second bearing are connected in a laminating manner, and the angle directions of the internal structures of the bearings are different.

Compared with the prior art, the utility model has the following beneficial effects:

in the utility model, the first bearing and the second bearing are connected in a back-to-back mounting mode, so that when the bearing is subjected to axial force extruded in two axial directions, the bearing can be tightly attached, meanwhile, the bearing is an angular contact bearing, an inner structural piece of the bearing and a ball or roller allow the cutter shaft to generate an inclination angle when rotating, the radial force applied to the cutter shaft when the belt pulley transmits torque can be eliminated, the cutter shaft penetrates through all parts, and when the transmitted torque drives the cutter shaft through the belt pulley, the cutter shaft can synchronously drive the cutter frame and carry the flail knife to perform centrifugal rotation motion for cutting shrubs and mowing. Under the action of uncontrollable external force, the first bearing and the second bearing respectively counteract most of interference factors, so that the cutter shaft continuously rotates according to the torque given by the power source, and higher breaking resistance and higher operation efficiency are achieved. And the cutter shaft, the first bearing and the second bearing are protected by the upper sealing cover, the lower sealing cover and the sealing environment of the flange cylinder sleeve stroke, so that dust or grass scraps can be prevented from entering the rotating core part, the failure rate of parts is reduced, and the service cycle of the parts is prolonged.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an exploded view of the present utility model with the cutterhead assembly removed;

FIG. 3 is a schematic view of the present utility model with the cutterhead assembly removed;

in the figure, the correspondence between the component names and the drawing numbers is:

201-pulley assembly 202-bearing mounting structure 203-tool holder assembly 101-tool head 102-tool head bolts,

1-a belt pulley 2-a cylinder sleeve upper sealing cover 3-a cutter shaft 4-a flat key 5-a first clamp spring 6-a flange cylinder sleeve 7-a first bearing 8-a second bearing 9-a second clamp spring 10-a cylinder sleeve lower sealing cover 11-a cutter frame fixing flange 12-a cutter frame 13-a flail blade 14-a cutter frame fixing baffle 15-a fixing baffle bolt 16-a cutter frame bolt 17-a belt pulley bolt 18-a sealing cover bolt.

Description of the embodiments

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples

As shown in fig. 1 to 3:

the utility model provides a belt flail knife mechanism with a double-bearing fixing structure for a mower, which comprises a belt pulley assembly 201, a bearing fixing structure 202, a knife rest assembly 203 and a knife disc assembly,

the pulley assembly 201 comprises a pulley 1 and a pulley bolt 17 matched with the pulley 1, the bearing fixing structure 202 comprises a cylinder sleeve upper sealing cover 2, a cutter shaft 3, a flat key 4, a first clamping spring 5, a flange cylinder sleeve 6, a first bearing 7, a second bearing 8, a second clamping spring 9 and a cylinder sleeve lower sealing cover 10, the cutter frame assembly 203 comprises a cutter frame fixing flange 11, a cutter frame 12, a flail blade 13, a cutter frame fixing baffle 14, a fixing baffle bolt 15, a cutter frame bolt 16 and a sealing cover bolt 18, and the cutter head assembly comprises a cutter head 101 and a cutter head bolt 102 matched with the cutter head 101.

The belt pulley 1 is connected to the upper end of the cutter shaft 3 and is fixed by a belt pulley bolt 17, the first bearing 7, the second bearing 8, the first clamp spring 5 and the second clamp spring 9 are connected to the middle section of the cutter shaft 3, the flange cylinder sleeve 6 is wrapped outside the belt pulley, the flange cylinder sleeve 6 is used for sealing an upper opening and a lower opening by the cylinder sleeve upper sealing cover 2 and the cylinder sleeve lower sealing cover 10, the cutter frame fixing flange 11 is connected to the lower end of the cutter shaft and is simultaneously connected with the cutter frame fixing baffle 14, the cutter frame 12 is clamped in the middle and is fixed by the cutter frame bolt 16, and the cutter frame fixing baffle bolt 15 is used for locking and fixing the cutter frame assembly 203 and the cutter shaft 3.

The first bearing 7 and the second bearing 8 are in fit connection, the cutter shaft penetrates through central holes of the first bearing 7 and the second bearing 8 and is limited by the second clamp spring 9 to prevent the bearing from moving downwards, and meanwhile penetrates through the inside of the flange cylinder sleeve 6 and is limited by the first clamp spring 5 to prevent the bearing from moving upwards.

The first bearing 7, the second bearing 8, the cutter shaft 3, the first clamp spring 5 and the second clamp spring 9 are wrapped by the flange cylinder sleeve 6, and the cylinder sleeve upper sealing cover 2 and the cylinder sleeve lower sealing cover 10 can effectively prevent dust or grass scraps from entering the cavity to influence the rotation of the cutter shaft 3.

The tool rest 12 is locked on the tool rest fixing flange 11 by 6 tool rest bolts 16 through the tool rest fixing baffle 14, meanwhile, the tool rest fixing flange 11 is connected with the lower end of the cutter shaft 3 through a flat surface and is integrally locked on the cutter shaft 3 through the fixing baffle bolts 15, and therefore the tool rest can be effectively prevented from being thrown out in the high-speed rotation process.

Specific use and action of the embodiment:

according to the utility model, the through hole of the outer ring of the flange cylinder sleeve 6 penetrates through the cutter head bolt 102 to fix the whole structure, the outer rings of the first bearing 7 and the second bearing 8 are fixed on the inner part of the flange cylinder sleeve 6 and do not rotate, the belt pulley 1 in the belt pulley assembly 201 receives engine torque power transmitted by a V-shaped belt, the cutter shaft 3 is connected and transmits the torque power by means of the flat key 4, the cutter shaft 3 rotates and outputs the torque power to the cutter frame 12, the cutter frame 12 carries out central rotation motion to drive the two end throwing blades 13 to carry out centrifugal rotation, meanwhile, the belt pulley 1 is pulled by the V-shaped belt to generate radial force, axial force is transmitted from the upper end to the lower end, the torque power of the cutter shaft 3 is output to the cutter frame 12, the axial force is transmitted from the lower end to the upper end by the lower end by the rotation bearing 7 and the inner ring rotation bearing end of the second bearing 8, and the inclination angle counteracting radial force is generated by the inner structural piece and the balls or rollers, and the smooth continuous rotation of the cutter frame is ensured.

The belt pulley 1 is used for carrying input torque by belt transmission, the belt pulley 1 is connected through a key groove to transmit the torque to the cutter shaft 3, and the belt pulley 1 and the cutter shaft 3 are fastened and positioned by a belt pulley bolt 17; the flail knife assembly 203 comprises a knife rest 12, a knife rest fixing flange 11, a knife rest fixing baffle 14 and a flail knife blade 13, wherein the knife rest 12 and the knife rest fixing flange 11 are connected with the knife shaft 3 through a fixing baffle bolt 15, a flat opening at the lower end of the knife shaft 3 is connected with the knife rest fixing flange 11 and drives the knife rest 12 to synchronously rotate, and the flail knife blade 13 is connected with two ends of the knife rest 12 through bolts; the utility model is provided with the first bearing 7, the second bearing 8 has radial load adjustment capability, so that the influence of radial force and axial force of high-speed torque of the cutter shaft 3 is greatly reduced, the torque output to the cutter frame 12 is continuous and stable, the flail can perform centrifugal rotation stably, the stability of the flail blade 13 during centrifugal high-speed rotation is effectively improved, the breaking resistance under the condition of other external forces except high-speed torque is effectively improved, the engine and the cutter frame are protected, and the mowing strength and the working efficiency are improved.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A belt flail knife mechanism for a mower with a double-bearing fixing structure, which is arranged on a cutter head assembly and comprises a belt pulley assembly (201), a bearing fixing structure (202) and a cutter frame assembly (203), and is characterized in that: the belt pulley assembly (201) comprises a belt pulley (1) and a belt pulley bolt (17) matched with the belt pulley (1), the bearing fixing structure (202) comprises a cylinder sleeve upper sealing cover (2), a cutter shaft (3), a flat key (4), a first clamp spring (5), a flange cylinder sleeve (6), a first bearing (7), a second bearing (8), a second clamp spring (9) and a cylinder sleeve lower sealing cover (10), the cutter frame assembly (203) comprises a cutter frame fixing flange (11), a cutter frame (12), a flail blade (13), a cutter frame fixing baffle (14), a fixing baffle bolt (15), a cutter frame bolt (16) and a sealing cover bolt (18), the cutter disc assembly comprises a cutter disc (101) and a cutter disc bolt (102) matched with the cutter disc (101), the upper end of the cutter shaft (3) penetrates through a central hole of the belt pulley (1) to be connected with the belt pulley (1), the lower end of the cutter shaft (3) sequentially penetrates through a central hole of the first bearing (7), a central hole of the second bearing (8) and a central hole of the cutter frame (12) to be connected with the cutter frame (12) and through the cutter frame fixing baffle bolt (17) and two ends of the cutter frame fixing baffle bolt (15) are screwed tightly, the flange cylinder sleeve (6) is fixed on the cutter head (101) through hole cutter head bolts (102).

2. The belt slinger mechanism for a lawnmower with a double bearing fixing structure as claimed in claim 1, wherein: a flat key (4) is arranged in the belt pulley (1) through a key groove, torque is transmitted to the cutter shaft (3), and the belt pulley (1) is fixed at the upper end of the cutter shaft (3) through a belt pulley bolt (17).

3. The belt slinger mechanism for a lawnmower with a double bearing fixing structure as claimed in claim 1, wherein: the cutter shaft (3) penetrates through the centers of the first bearing (7), the second bearing (8), the first clamping spring (5) and the second clamping spring (9), and the axial displacement of the cutter shaft (3), the first bearing (7) and the second bearing (8) is clamped and positioned by the first clamping spring (5) and the second clamping spring (9).

4. The belt slinger mechanism for a lawnmower with a double bearing fixing structure as claimed in claim 1, wherein: the cutter shaft (3), the first bearing (7), the second bearing (8), the first clamp spring (5) and the second clamp spring (9) are wrapped by the cylinder sleeve upper sealing cover (2), the flange cylinder sleeve (6) and the cylinder sleeve lower sealing cover (10), the cylinder sleeve upper sealing cover (2), the flange cylinder sleeve (6) and the cylinder sleeve lower sealing cover (10) are fixedly connected through sealing cover bolts (18), and the total number of the sealing cover bolts (18) is 8.

5. The belt slinger mechanism for a lawnmower with a double bearing fixing structure as claimed in claim 1, wherein: the cutter shaft (3) passes through the cutter frame fixing flange (11) and is matched with the cutter frame fixing flange (11) in a flat way, simultaneously passes through a center hole of the cutter frame (12), and is locked and positioned by cutter frame bolts (16) through cutter frame fixing baffle plates (14), wherein 6 cutter frame bolts (16) are arranged in total.

6. The belt slinger mechanism for a lawnmower with a double bearing fixing structure as claimed in claim 1, wherein: the cutter rest assembly (203) is locked at the lower end of the cutter shaft (3) through a fixed baffle bolt (15).

7. The belt slinger mechanism for a lawnmower with a double bearing fixing structure as claimed in claim 1, wherein: the flail blade (13) is connected to mounting holes at two ends of the tool rest (12) through bolts, torque transmission is achieved through the belt pulley (1), the cutter shaft (3) and the tool rest (12) respectively, and the flail blade and the tool rest rotate synchronously.

8. The belt slinger mechanism for a lawnmower with a double bearing fixing structure as claimed in claim 1, wherein: the first bearing (7) and the second bearing (8) are attached, placed and connected, and the angle directions of the internal structures of the bearings are different.