CN207560825U - A kind of mowing machine knife group buffer gear - Google Patents

Abstract

The utility model discloses a kind of mowing machine knife group buffer gears, including knife group shaft, knife group is separately installed in the knife group shaft, buffer belt wheel, the spacing block set of 2 or more is installed on wherein described buffer belt wheel side wall, it is slidably fitted with the first buffer shifting block and the second buffer shifting block respectively on buffer belt wheel side wall between the two neighboring spacing block set, the first buffer shifting block is connected with one end of buffer spring, the second buffer shifting block is connected with the other end of buffer spring, damper cover is installed on the buffer belt wheel, the damper cover is connected with knife group, the damper cover madial wall is connected with the first buffer shifting block and the abutting of the second buffer shifting block.A kind of mowing machine knife group buffer gear described in the utility model is given the active force of knife group by the setting reduction knife group moment of buffer, so as to reduce the probability of knife group blade breakage by stone.

Description

A kind of mowing machine knife group buffer gear

Technical field

The utility model is related to a kind of mowing machine knife group buffer gears.

Background technology

Motor is rotated grass trimmer by belt pulley band movable cutter set shaft at work, and the rotation of knife group shaft, which drives, is mounted on knife Knife group rotation in group shaft, the rotation of knife group are mowed using its blade.Once encountering the hard object such as stone in knife group rotation process When, due to motor still can normal driving knife group rotation, stone can moment to knife group and the reversed active force of motor, so as to make knife The blade of group is easily broken.

Utility model content

The purpose of this utility model is to provide a kind of mowing machine knife group buffer gears, are reduced by the setting of buffer Knife group moment is given the active force of knife group by stone, so as to reduce the probability of knife group blade breakage.

In order to achieve the above object, the technical solution of the utility model is：

A kind of mowing machine knife group buffer gear including knife group shaft, is separately installed with knife group, buffering in the knife group shaft Device belt wheel, wherein be equipped with the spacing block set of 2 or more on the buffer belt wheel side wall, the two neighboring spacing block set it Between buffer belt wheel side wall on be slidably fitted with the first buffer shifting block and the second buffer shifting block respectively, first buffering Device shifting block is connected with one end of buffer spring, and the second buffer shifting block is connected with the other end of buffer spring, the buffering Damper cover is installed, the damper cover is connected with knife group, the damper cover madial wall and the first buffer on device belt wheel Shifting block and the second buffer shifting block, which push against, to be connected.

Postive stop baffle is installed on buffer belt wheel side wall between the two neighboring spacing block set.

Flexible elevator bar is installed on the postive stop baffle side wall of lateral cushioning spring side.

The shifting block width of the first buffer shifting block is more than the width of spacing block set, and the second buffer shifting block is dialled Block width is also greater than the width of spacing block set.

It is pushed against with spacing block set and offers the first positioning groove on the first buffer shifting block side wall of side, with limiting Convex block pushes against and offers the second positioning groove on the second buffer shifting block side wall of side.

The first buffer shifting block bottom surface offers the first groove, and the first wear-resistant ceramic is equipped in first groove Block；The second buffer shifting block bottom surface offers the second groove, and the second abrasion-proof ceramic block is equipped in second groove.

The beneficial effects of the utility model are：A kind of mowing machine knife group buffer gear is reduced by the setting of buffer Knife group moment is given the active force of knife group by stone, so as to reduce the probability of knife group blade breakage.

Description of the drawings

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the structure diagram that Fig. 1 dismantles damper cover；

Fig. 3 is the structure diagram of damper cover；

Fig. 4 is the mounting structure schematic diagram of buffer belt wheel, buffer shifting block and buffer spring；

Fig. 5 is the structure diagram of the first buffer shifting block；

Fig. 6 is the structure diagram of the second buffer shifting block.

Specific embodiment

Embodiment 1

As shown in Figure 1, Figure 2, a kind of mowing machine knife group buffer gear shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, including knife group shaft 1, institute State and knife group 2, buffer belt wheel 3 be separately installed in knife group shaft 1, wherein be equipped on 3 side wall of buffer belt wheel 2 with On spacing block set 4, be slidably fitted with first respectively on 3 side wall of buffer belt wheel between the two neighboring spacing block set 4 5 and second buffer shifting block 6 of buffer shifting block, the first buffer shifting block 5 are connected with one end of buffer spring 7, and described Two buffer shifting blocks 6 are connected with the other end of buffer spring 7, and damper cover 8 is equipped on the buffer belt wheel 3, described slow It rushes device lid 8 with knife group 2 to be connected, 8 madial wall of damper cover is pushed against with the first buffer shifting block 5 and the second buffer shifting block 6 It is connected.

Postive stop baffle 9 is installed on 3 side wall of buffer belt wheel between the two neighboring spacing block set 4.Postive stop baffle 9 Setting can limit the position of buffer spring 7, generate displacement when buffer spring 7 being avoided to squeeze.

Flexible elevator bar 10 is installed on 9 side wall of the postive stop baffle of 7 side of lateral cushioning spring.Flexible abrasionproof is convex The setting of block 10 can reduce the frictionally damage between buffer spring 7 and postive stop baffle 9.

The shifting block width of the first buffer shifting block 5 is more than the width of spacing block set 4, the second buffer shifting block 6 Shifting block width also greater than spacing block set 4 width.

It is pushed against with spacing block set 4 and offers the first positioning groove 11 on 5 side wall of the first buffer shifting block of side, with Spacing block set 4 pushes against and offers the second positioning groove 12 on 6 side wall of the second buffer shifting block of side.First positioning groove 11 setting can improve the relative stability of position when 4 and first buffer shifting block 5 of spacing block set squeezes, and avoid generating axial Displacement.Similarly the setting of the second positioning groove 12 can improve the phase of position when the second buffer shifting block 6 is squeezed with spacing block set 4 To stability, avoid generating axial displacement.

First buffer shifting block, 5 bottom surface offers the first groove 14, and it is resistance to be equipped with first in first groove 14 Grind ceramic block 15；Second buffer shifting block, 6 bottom surface offers the second groove 16, and second is equipped in second groove 16 Abrasion-proof ceramic block 17.The setting of first abrasion-proof ceramic block 15 can reduce the frictionally damage of the first buffer shifting block 5, and second is wear-resisting The setting of ceramic block 17 can reduce the frictionally damage of the second buffer shifting block 6.

Mowing machine knife group buffer gear described in the present embodiment is using, when the blade of knife group 2 is given by the hard object such as stone When giving with motor opposition, since knife group 2 is connected with damper cover 8, damper cover 8 can stop operating immediately, delay The frictional force rushed between 8 and first buffer shifting block 5 of device lid and the second buffer shifting block 6 can make the first buffer shifting block 5 and Two buffer shifting blocks 6 stop relatively rotating relative to knife group shaft 1；But motor still can give 1 turn of knife group shaft by belt Dynamic power, knife group shaft 1 drive buffer belt wheel 3 to rotate, and buffer belt wheel 3 passes through spacing block set 4 during rotation Circumferential extruding force is generated to the first buffer shifting block 5 or the second buffer shifting block 6, so as to make 7 crimp of buffer spring, buffering Spring 7 can generate reaction force in crimp to the first buffer shifting block 5 or the second buffer shifting block 6, so as to give knife group Shaft 1 generates the reaction force opposite with electric power active force, so as to reduce the active force that stone gives knife group, reduces knife group The probability of blade breakage.

A kind of mowing machine knife group buffer gear of the present embodiment reduces knife group moment by stone by the setting of buffer Block gives the active force of knife group, so as to reduce the probability of knife group blade breakage.

Claims (6)

1. a kind of mowing machine knife group buffer gear, it is characterised in that：Including knife group shaft（1）, the knife group shaft（1）Upper difference Knife group is installed（2）, buffer belt wheel（3）, wherein the buffer belt wheel（3）The limit convex of 2 or more is installed on side wall Block（4）, the two neighboring spacing block set（4）Between buffer belt wheel（3）The first buffering is slidably fitted on side wall respectively Device shifting block（5）With the second buffer shifting block（6）, the first buffer shifting block（5）With buffer spring（7）One end be connected, institute State the second buffer shifting block（6）With buffer spring（7）The other end be connected；The buffer belt wheel（3）On buffer is installed Lid（8）, the damper cover（8）With knife group（2）It is connected, the damper cover（8）Madial wall and the first buffer shifting block（5）With Second buffer shifting block（6）It pushes against and is connected.

2. a kind of mowing machine knife group buffer gear according to claim 1, it is characterised in that：The two neighboring limit convex Block（4）Between buffer belt wheel（3）Postive stop baffle is installed on side wall（9）.

3. a kind of mowing machine knife group buffer gear according to claim 2, it is characterised in that：Lateral cushioning spring（7）One The postive stop baffle of side（9）Flexible elevator bar is installed on side wall（10）.

4. a kind of mowing machine knife group buffer gear according to claim 1, it is characterised in that：The first buffer shifting block （5）Shifting block width be more than spacing block set（4）Width, the second buffer shifting block（6）Shifting block width also greater than limiting Convex block（4）Width.

5. a kind of mowing machine knife group buffer gear according to claim 1, it is characterised in that：With spacing block set（4）It pushes against The first buffer shifting block of side（5）The first positioning groove is offered on side wall（11）, with spacing block set（4）Push against side The second buffer shifting block（6）The second positioning groove is offered on side wall（12）.

6. a kind of mowing machine knife group buffer gear according to claim 1, it is characterised in that：The first buffer shifting block （5）Bottom surface offers the first groove（14）, first groove（14）First abrasion-proof ceramic block is inside installed（15）；Described second Buffer shifting block（6）Bottom surface offers the second groove（16）, second groove（16）Second abrasion-proof ceramic block is inside installed （17）.