A kind of grass mower cutting-height governor motion
Technical field
The utility model relates to a kind of grass mower, particularly a kind of grass mower cutting-height governor motion.
Background technology
The character of grass mower itself has just determined that lawn mower needs to work sustainedly and stably for a long time, require each parts of grass mower can show well at harsh working environment, and the cutting-height governor motion of grass mower is one of topmost critical component of grass mower.As shown in Figure 1, existing grass mower cutting-height governor motion is that elastic compression sheet 2 and grass mower rear axle 35 are directly tightened in together rigidly with fastening bolt 17.Elastic compression sheet 2 has grass mower simultaneously heightens the function of handle, should have enough elasticity that it is pressed on and heighten on fluted disc 18, torsional moment and shearing force that while having again enough rigidity to bear lawn machine gravity and work, vibration brings.But elasticity that the rigidity of elastic compression sheet 2 is large is just little, very arduously it be thrown off and could be regulated highly from gear; And elasticity large rigidity diminish, can be because of often fracture out of supply and very easy of insufficient strength, this is a pair of very scabrous contradiction.In order to make user can adjust normally, easily cutting-height, can only adjust from reducing rigidity aspect, therefore, in routine use, these parts are very easy to damage, and the damage of these parts directly causes grass mower normally to work.
Utility model content
In view of deficiency of the prior art, the purpose of this utility model is to provide a kind of cutting-height governor motion of grass mower, by by elastic pressuring clamping device with the rigidity of hinge arrangement, heighten handle separate assembling frame for movement, can realize easily and regulate the object of cutting-height, there is the features such as simple in structure, location is reliable, intensity is high, rapid operation, adjustment stroke is short, outward appearance is generous.
For achieving the above object, the utility model is taked following technical scheme:
A kind of grass mower cutting-height governor motion, it comprises a fluted disc of heightening of being located on grass mower chassis, and heightens handle on a contiguous block of being located at grass mower wheel shaft one end, this is heightened handle and this and heightens fluted disc and have buckle structure in correspondence with each other; This is heightened handle and comprises top and bottom, and lower end is fixed on wheel shaft, and upper end is stuck in this and heightens on fluted disc, and centre connects by articulated form; Also comprise an elastic pressuring clamping device, this elastic pressuring clamping device and this middle part of heightening handle upper end are supported, make this heighten handle be stuck in tightly this heighten fluted disc keep corresponding double wedge on can not get loose.
The described top and bottom of heightening handle are rigid structure, by hinge arrangement, connect.
Described elastic pressuring clamping device is fixedly arranged on described contiguous block with described heightening together with handle, at its lower end.
Described elastic pressuring clamping device is flat spring.
Described elastic pressuring clamping device is the flexure strip with radian, and described contiguous block is fixed in this flexure strip bottom, top with described in heighten handle upper center and support.
The beneficial effects of the utility model are: grass mower cutting-height governor motion of the present utility model, by being heightened to handle, elastic pressuring clamping device and cutting-height separate assembling, can realize easily the object that regulates cutting-height, the system architecture that this height regulates is very reliable, stable, rapid operation, has overcome the contradiction between rigidity and the elasticity that traditional cutting-height regulating system exists completely.
Accompanying drawing explanation
Fig. 1 is existing grass mower height adjustment mechanism structural representation.
Fig. 2 is the structural representation of the utility model grass mower height adjustment mechanism.
Fig. 3 is the structural representation of wheel shaft of the present utility model.
Fig. 4 is the structural representation of flexure strip of the present utility model.
Fig. 5 is the structural representation of heightening handle of the present utility model.
Fig. 6 is the structural representation of taper knob of the present utility model.
Fig. 7 is the structural representation of heightening fluted disc of the present utility model.
Embodiment
Below with reference to accompanying drawing, the utility model is further described, but it is not in order to limit practical range of the present utility model.
As shown in Figure 2, the utility model provides a kind of grass mower cutting-height governor motion, it comprises being located at for one heightens fluted disc 1 on grass mower chassis, with on a contiguous block 31 of being located at grass mower wheel shaft 3 one end, heighten handle 4, the upper end of heightening handle 4 43 of the grass mower of the present embodiment, lower end 44 is rigid structure, centre connects by hinge arrangement 42, when this hinge arrangement makes to heighten whole handle and has sufficient intensity, also guarantee that handle upper end has the performance moving left and right, to facilitate adjusting cutting-height, this is heightened handle 4 and heightens fluted disc 1 with this and have buckle structure in correspondence with each other.For example, as shown in Figure 5, Figure 7, can heighten on handle 4 through hole 41 is set at this, this be heightened fluted disc 1 outer rim some double wedges 11 is set, and this double wedge 11 can be arranged in this through hole 41, can fix this and heighten the position of handle 4.
As shown in Figure 2 and Figure 3, in addition, the utility model also comprises an elastic pressuring clamping device, and this elastic pressuring clamping device is supported with the middle part of heightening handle 4 upper ends 43, and the elastic force producing by this elastic pressuring clamping device makes this heighten handle 4 to have with this and heighten the trend that fluted disc 1 keeps buckle state.This elastic pressuring clamping device is fixedly arranged on this contiguous block 31 together with heightening handle, at its lower end 44, and this elastic pressuring clamping device can heighten with this member that fluted disc 1 keeps buckle state for spring or the flexure strip etc. with radian can make this heighten handle 4.As shown in Figure 4, the elastic pressuring clamping device of the present embodiment adopts the flexure strip 5 with radian, through Overheating Treatment, has elasticity, and bottom is fixed on this contiguous block 31, and top is supported with the middle part of heightening handle 4 upper ends 43.Machine at work suffered various power is born by radial type rigid handles, and flexure strip does not stress substantially.
As shown in Fig. 2, Fig. 5, Fig. 6, this heightens 43 middle parts, handle 4 upper end and has the bending structure at two right angles, and top is arranged with to be convenient to grip and the taper knob 6 of the application of force, and this taper knob 6 provides the operating environment of an ergonomics for operator, and moment of torsion is amplified.
Of the present utility model heightening on handle 4, lower end is rigid handles, upper by hinge arrangement 42 connecting handles, lower end, combine and substitute resilient handle of the prior art with elastic pressuring clamping device, the lower end of heightening handle 4 is fixed on the contiguous block 31 of grass mower wheel shaft 3 one end, elastic pressuring clamping device is passed through in upper end, as flexure strip 5, be pressed on and cut grass and heighten on fluted disc 1, because heighten handle, whole torsion and shearing force that mechanism bears have been born, therefore elastic pressuring clamping device only need to provide less pre-pressing force just can will heighten handle 4 to be pressed in reliably grass mower and to heighten on fluted disc 1.This makes user when regulating height, only need to overcome by very little strength the pressure of elastic pressuring clamping device, just can regulate like a cork.
Because the particularity of the utility model structure, in the generation of elastic pressuring clamping device compared with small deformation, the cutting-height that just can complete grass mower when heightening handle upper end 43 and only need to overcome less resistance regulates action, elastic pressuring clamping device is stressed also less simultaneously, the advantages such as long service life, rapid operation have been reached, in addition, because heighten handle upper and lower end, be rigidity completely, the intensity of handle is fine; Handle upper and lower end adopts hinge arrangement to connect, and frame for movement is very reliable, stable, therefore can greatly extend the service life of whole governor motion, has well solved traditional problem occurring on careless height-regulating mechanism of cutting.This regulating system is used on lawn mower, and reflection is good.
The above is all that the utility model patent is applied; for a person skilled in the art; in the situation that not deviating from spirit and scope of the present utility model; the apparent changes such as any equivalent transformation based on technical solutions of the utility model basis, simple transformation, within all belonging to the utility model protection domain.