CN220493614U - Lifting device and mowing equipment - Google Patents

Abstract

The application is applicable to the garden instrument field, discloses a elevating gear and grass cutting equipment. Wherein, elevating gear includes lift actuating mechanism and stabilizing mean. The lifting driving mechanism is fixed to the main body of the self-moving device and connected to the working device to drive the working device to lift relative to the main body. The stabilizing mechanism comprises at least two linkage guide assemblies, the two linkage guide assemblies are respectively located on two sides of the lifting driving mechanism and comprise a linkage piece and a guide seat, one end of the linkage piece is connected to the main body, the other end of the linkage piece is movably connected to the guide seat, the guide seat is fixed to the working device, and the linkage piece is synchronous to slide on the guide seat along with lifting of the working device relative to the main body. In the lifting device provided by the application, the stable posture of the operation device relative to the main body in the lifting process can be ensured, so that the operation effect of the operation device is improved.

Description

Lifting device and mowing equipment

Technical Field

The application relates to the field of garden tools, in particular to a lifting device and mowing equipment.

Background

Along with the development of urban afforestation, in order to rapidly and efficiently repair the lawn, the lawn mower becomes one of garden tools commonly used by garden workers, and when the lawn mower works, the blade of the cutting device rotates to cut the grass, so that the lawn is neat and attractive.

In the prior art, the cutting device of the mower can be lifted freely, and a user can change the cutting position and the height of the lawn according to the needs, so that the cut lawn is tidy and attractive. However, the cutting device has poor posture stability in the lifting process, and thus the cutting effect is poor.

Disclosure of Invention

The utility model aims at providing a elevating gear and grass cutting equipment, it aims at solving the not good technical problem of gesture stability of cutting device at the in-process of going up and down.

To achieve the above object, the present application provides a lifting device for driving a working device of a self-moving device to lift, including:

a lifting drive mechanism configured to be fixed to a main body of the self-moving apparatus and connected to the working device to drive the working device to lift relative to the main body;

the stabilizing mechanism comprises at least two linkage guide assemblies, the two linkage guide assemblies are respectively located on two sides of the lifting driving mechanism and comprise a linkage piece and a guide seat, one end of the linkage piece is connected with the main body in a structure mode, the other end of the linkage piece is movably connected with the guide seat, the guide seat is fixed to the working device in a structure mode, and the linkage piece is synchronous to slide on the guide seat along with lifting of the working device relative to the main body.

In the elevating gear of this application, every linkage direction subassembly all includes two links and guide holder, two the links all are constructed to follow operation device for the lift of main part is synchronous take place to slide on the guide holder, and one of them the link is in when taking place to slide on the guide holder, can drive another simultaneously the link takes place to slide on the guide holder.

In the lifting device, each guide seat comprises a base and a screw rod, the base is fixed on the working device, the screw rod is rotatably arranged on the base in a penetrating mode, the two linkage pieces comprise a supporting rod and a nut seat, one end of the supporting rod is rotatably connected with the nut seat, the other end of the supporting rod is rotatably connected with the main body, and the nut seat is provided with a threaded hole; the screw rod passes through the threaded holes of the nut seats of the two linkage members and is in threaded connection with the threaded holes, and the nut seats of the two linkage members slide along the screw rod in opposite directions or in opposite directions.

In the lifting device, the nut seats of the two linkage pieces are respectively located at two sides of the lifting driving mechanism, and the other ends of the supporting rods of the two linkage pieces are respectively constructed to be connected with the main body in a rotating mode and located at two sides of the lifting driving mechanism.

In the lifting device, the struts of the two linkage members are arranged in a crossing manner.

In the elevating gear of this application, the guide holder includes two bases and screw rod, the screw rod rotationally wears to locate respectively the base.

In the lifting device, two nut seats of the linkage piece are positioned between bases of the two guide seats.

In the lifting device, at least two linkage guide assemblies are symmetrically arranged on two sides of the lifting driving mechanism.

In the lifting device of the application, the lifting driving mechanism comprises a driving motor and a connecting rod, wherein the driving motor is fixed to the main body, one end of the connecting rod is connected to the driving motor, the other end of the connecting rod is connected to the working device, and the driving motor drives the connecting rod to lift so as to drive the working device to lift relative to the main body.

The application also provides mowing equipment, which comprises a host machine, a cutting device and the lifting device;

the lifting driving mechanism is fixedly arranged on the host machine and connected with the cutting device so as to drive the cutting device to lift relative to the host machine;

one end of the linkage piece is connected with the host machine, the other end of the linkage piece is movably connected with the guide seat, the guide seat is fixed on the cutting device, and the linkage piece is synchronous to slide on the guide seat along with lifting of the cutting device relative to the host machine.

In the lifting device provided by the application, the lifting driving mechanism can drive the working device to lift relative to the main body. In the process that the operation device is lifted relative to the main body, the linkage piece of each linkage guide assembly can synchronously slide on the guide seat along with the lifting of the operation device relative to the main body, and as the two linkage guide assemblies are respectively positioned at the two sides of the lifting driving mechanism, the two sides of the operation device can synchronously lift relative to the main body, so that the stable posture of the operation device relative to the main body in the lifting process is ensured, and the operation effect of the operation device is improved.

In the mowing equipment provided by the application, the lifting driving mechanism can drive the cutting device to lift relative to the host machine. In the process that the cutting device is lifted relative to the host machine, the linkage piece of each linkage guide component can synchronously slide on the guide seat along with the lifting of the cutting device relative to the host machine, and as the two linkage guide components are respectively positioned at the two sides of the lifting driving mechanism, the two sides of the cutting device can synchronously lift relative to the host machine, so that the stable gesture of the cutting device relative to the lifting process of the host machine is ensured, and the cutting effect of the cutting device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from the structures shown in these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a lifting device according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a linkage guide assembly provided in an embodiment of the present application;

fig. 3 is a schematic structural view of a mowing apparatus provided in an embodiment of the present application;

fig. 4 is an exploded schematic view of a mowing apparatus provided by an embodiment of the present application.

Reference numerals illustrate:

10: a stabilizing mechanism; 20: a linkage guide assembly; 21: a linkage member;

211: a support rod; 212: a nut seat; 2121: a first connection plate;

22: a guide seat; 221: a base; 222: a screw;

30: a lifting driving mechanism; 31: a driving motor; 32: a connecting rod;

200: a cutting device; 201: a cutter head cover; 202: a rotary driving member;

203: a baffle; 300: a host; 301: a control end;

302: a second connecting plate; 3021: and a lap joint part.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship between the components, the movement condition, and the like in a certain specific posture, and if the specific posture is changed, the directional indicator is correspondingly changed.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element through intervening elements.

Furthermore, the descriptions of "first," "second," and the like, herein are for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

The lawn mower is one of the garden tools commonly used by garden workers, when the lawn mower is used, the blade of the cutting device at the bottom of the lawn mower rotates, and grass can be cut in the moving process of the lawn mower, so that the lawn is tidy and attractive. The mowing device can be lifted freely as required to change the position and the height of the lawn cutting or lifted for storage when not in use. However, during the lifting process, the posture of the cutting device may be changed, so that the cutting effect is affected, for example, the mowing device is inclined during the lifting process.

Therefore, the embodiment of the application provides a lifting device and mowing equipment, which can ensure that the posture of a working device is stable relative to the lifting process of a main body so as to improve the working effect of the working device.

It will be appreciated that the lifting device of the present application is not limited to use in mowing apparatus, but may be used in other apparatus where stable lifting is required as required.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments can be combined with each other without conflict

Referring to fig. 1, a lifting device provided in an embodiment of the present application is configured to drive a working device of a self-moving device to lift, and includes a lifting driving mechanism 30 and a stabilizing mechanism 10.

The elevation driving mechanism 30 is configured to be fixed to the main body of the self-moving apparatus and connected to the working device to drive the working device to elevate with respect to the main body. The stabilizing mechanism 10 includes at least two linkage guide assemblies 20, the two linkage guide assemblies 20 are respectively located at two sides of the lifting driving mechanism 30, and each linkage guide assembly includes a linkage piece 21 and a guide seat 22, one end of the linkage piece 21 is configured to be connected to the main body, the other end of the linkage piece is movably connected to the guide seat 22, the guide seat 22 is configured to be fixed to the working device, and the linkage piece 21 is configured to slide on the guide seat 22 synchronously along with lifting of the working device relative to the main body.

In the lifting device provided by the application, the lifting driving mechanism 30 can drive the working device to lift relative to the main body. In the process of lifting the working device relative to the main body, the linkage piece 21 of each linkage guide assembly 20 can synchronously slide on the guide seat 22 along with the lifting of the working device relative to the main body, and as the two linkage guide assemblies 20 are respectively positioned at two sides of the lifting driving mechanism 30, the two sides of the working device can synchronously lift relative to the main body, so that the stable posture of the working device relative to the lifting process of the main body is ensured, and the working effect of the working device is improved.

It will be appreciated that the linkage 21 of the linkage guide assembly 20 may slide on the guide 22 by being actively driven, or may slide on the guide 22 as a result of the lifting of the working device relative to the body.

In the embodiment that the linkage piece 21 of the linkage guide assembly 20 slides on the guide seat 22 in an active driving manner, the lifting stroke between the working device and the main body at each linkage guide assembly 20 is consistent and consistent with the lifting stroke of the lifting driving mechanism 30 by actively driving the stroke of each linkage piece 21 to slide and fix on the guide seat 22, so that the posture of the whole working device is ensured to be stable relative to the main body in the lifting process.

Illustratively, the guide seat 22 is a guide rod fixed on the working device, the linkage member 21 actively slides on the guide rod through a driving member provided on the working device, and since one end of the linkage member 21 is configured to be connected to the main body, the lifting stroke between the working device and the main body at the linkage guide assembly 20 can be actively changed.

Referring to fig. 1 and 2, in some embodiments, each linkage guide assembly 20 includes two linkage members 21 and a guide seat 22, where each linkage member 21 is configured to slide on the guide seat 22 synchronously with the lifting of the working device relative to the main body, and when one linkage member 21 slides on the guide seat 22, the other linkage member 21 is driven to slide on the guide seat 22 synchronously. In this way, in each linkage guide assembly 20, in the process that the operation device is lifted relative to the main body, two linkage pieces 21 are driven to slide relative to the guide seat 22, and as one linkage piece 21 synchronously drives the other linkage piece 21 to slide in a guiding manner, the lifting stroke between the operation device and the main body at the two linkage pieces 21 is consistent, so that the gesture balance in the lifting process of the operation device is ensured. Specifically, in each linkage guide assembly 20, if only one of the linkage members 21 is driven to slide relative to the guide seat 22 during the lifting process of the working device relative to the main body, since one of the linkage members 21 synchronously drives the other linkage member 21 to slide in a guiding manner, the other linkage member 21 also necessarily slides relative to the guide seat 22, so that the lifting of the position between the working device and the main body, which is located at the other linkage member 21, is changed, the lifting stroke between the working device and the main body, which is located at the two linkage members 21, is consistent, and in the practical use process, the two linkage members 21 slide on the guide seat 22 synchronously along with the lifting of the working device relative to the main body.

And, since the stabilizing structure includes at least two linkage guide assemblies 20, the overall posture of the working device in the lifting process with respect to the main body can be stabilized.

Referring to fig. 1 and 2, in some embodiments, in each linkage guide assembly 20, the guide base 22 includes a base 221 and a screw 222, the base 221 is configured to be fixed on the working device, the screw 222 rotatably penetrates through the base 221, the two linkages 21 each include a support rod 211 and a nut seat 212, one end of the support rod 211 is rotatably connected to the nut seat 212, the other end is configured to be rotatably connected to the main body, and the nut seat 212 is provided with a threaded hole; the screw rod 222 is inserted into the threaded holes of the nut seats 212 of the two linkage members 21 and is in threaded connection with the threaded holes, and the nut seats 212 of the two linkage members 21 slide along the screw rod 222 in opposite directions or in opposite directions. In this way, in each linkage guide assembly 20, during the lifting process of the working device relative to the main body, the nut seats 212 of the two linkage members 21 are driven to slide relative to the screw rods 222, the screw rods 222 rotate relative to the base 221, and then the nut seats 212 of the two linkage members 21 can slide along the screw rods 222 in opposite directions or opposite directions, so that the lifting stroke between the working device and the main body at the two linkage members 21 is consistent, and the posture balance of the working device in the lifting process is ensured.

Illustratively, the nut seat 212 is fixed with a first connecting plate 2121 toward the upper surface of the main body, and the first connecting plate 2121 is rotatably connected to one end of the strut 211. For example, the first connecting plate 2121 is provided with two first connecting pieces at intervals, a first rotating rod is arranged between the two first connecting pieces, one end of the supporting rod 211 is arranged between the two first connecting pieces, and the first rotating rod penetrates through one end of the supporting rod 211.

Illustratively, a second connecting plate 302 is fixed to the surface of the main body facing the working device, and the second connecting plate 302 is rotatably connected to the other end of the strut 211. For example, the second connecting plate 302 is provided with two spaced second connecting pieces, a second rotating rod is arranged between the two second connecting pieces, two ends of the supporting rod 211 are arranged between the two second connecting pieces, and the second rotating rod penetrates through the other end of the supporting rod 211.

Of course, in other embodiments, the two linkages 21 may also be linked through a gear set during the sliding process relative to the guide seat 22, so that the lifting stroke between the working device and the main body at the two linkages 21 is consistent.

Referring to fig. 1 and 2, in some embodiments, the nut seats 212 of the two linkages 21 are respectively located at two sides of the lifting driving mechanism 30, and the other ends of the struts 211 of the two linkages 21 are respectively configured to be rotatably connected to the main body at two sides of the lifting driving mechanism 30. In this way, in each of the interlocking guide assemblies 20, the working device can be balanced on both sides of the lift drive mechanism 30 during the lifting of the working device relative to the main body, and tilting due to tilting of one side can be further avoided. In other embodiments, the nut seats 212 of the two linkages 21 may also be located on the same side of the lift driving mechanism 30, and the other ends of the struts 211 of the two linkages 21 are respectively configured to be rotatably connected to the main body on the same side of the lift driving mechanism 30.

Illustratively, the nut seats 212 of the two linkages 21 are respectively symmetrical to two sides of the lifting driving mechanism 30 perpendicular to the traveling direction, and the other ends of the struts 211 of the two linkages 21 are respectively configured to be rotatably connected to two sides of the body symmetrical to the lifting driving mechanism 30 perpendicular to the traveling direction.

Referring to fig. 1 and 2, in some embodiments, struts 211 of two linkages 21 are disposed crosswise. Because the struts 211 of the linkage member 21 are arranged in a crossing manner, the overall structure of the linkage guide assembly 20 is more concentrated, and the linkage guide member can be better stable and reliable when being used as a support. In other embodiments, the struts 211 of the two linkages 21 may not be staggered, e.g., the struts 211 of the two linkages 21 extend away from each other in the direction of the working device to the body.

In some embodiments, in each linkage guide assembly 20, the second connecting plate 302 rotatably connected to the strut 211 of each linkage member 21 is provided with a lap joint part 3021 overlapped with the strut 211 of another linkage member 21, so as to limit the rotation range of the strut 211, further limit the sliding range of the linkage member 21 relative to the guide seat 22, and further limit the lifting travel range of the working device relative to the main body.

Referring to fig. 1 and 2, in some embodiments, the guide 22 includes two bases 221 and a screw 222, and the screws 222 are rotatably disposed on the bases 221 respectively. In this way, the stability of the structure of the guide seat 22 is ensured, so that the nut seat 212 can slide on the screw 222 stably through the rotation of the threads. In other embodiments, only one base 221 is provided, the screw 222 rotatably penetrates the base 221, and the two nut seats 212 slide on the screws 222 at both sides of the base 221.

Referring to fig. 1 and 2, in some embodiments, the nut seats 212 of the two linkages 21 are located between the bases 221 of the two guide seats 22. In this way, the distance between the two bases 221 can be set to limit the sliding width of the nut seat 212, and thus the sliding width of the link 21 with respect to the guide seat 22, and further limit the lifting range of the working device with respect to the main body. In other embodiments, the nut seats 212 of the two linkages 21 may also be located outside of the two bases 221.

In some embodiments, the linkage 21 of the different linkage guide assemblies 20 may also be slid in a linkage manner to ensure that the overall attitude of the work device is stable during lifting and lowering relative to the main body. Illustratively, the screws 222 of the shoes 22 of the plurality of ganged-guide assemblies 20 interlock with one another. For example, the screws 222 of the guide seats 22 of the plurality of linkage guide assemblies 20 are linked through a gear set, so that when the screw 222 of the guide seat 22 of any linkage guide assembly 20 rotates, the screws 222 of the guide seats 22 of the other linkage guide assemblies 20 are synchronously driven to rotate, thereby ensuring that the linkage piece 21 of each linkage guide assembly 20 synchronously slides on the corresponding guide seat 22.

It will be appreciated that the stabilizing mechanism 10 includes at least two linkage guide assemblies 20, with the two linkage guide assemblies 20 being located on either side of the lift drive mechanism 30. That is, at least two linkage guide assemblies 20 are respectively positioned at two sides of the lifting driving mechanism 30. When the number of the set linkage guide assemblies 20 is greater than two, other guide assemblies may be set at any positions as required. For example, four linkage guide assemblies 20 are provided, wherein two linkage guide assemblies 20 are respectively arranged at two sides of the lifting driving mechanism 30 in the first direction, and the other two linkage guide assemblies 20 are respectively arranged at two sides of the lifting driving mechanism 30 in the second direction; alternatively, the four linkage guide assemblies 20 are disposed on both sides of the lift driving mechanism 30.

Referring to fig. 1, in some embodiments, at least two linkage guide assemblies 20 are symmetrically disposed at two sides of the lifting driving mechanism 30. In the process of driving the working device to lift relative to the main body by the lifting driving mechanism 30, the balance of the two sides of the lifting driving mechanism 30 can be ensured, and the unbalance caused by the overweight of one side can be avoided. Of course, in other embodiments, the two linkage guide assemblies 20 may be disposed asymmetrically on both sides of the lift driving mechanism 30, so long as the lift stroke between the working device and the main body at each linkage guide assembly 20 is ensured to be consistent.

Illustratively, the two linkage guide assemblies 20 are symmetrically disposed on both sides of the lift drive mechanism 30 in the direction of travel from the mobile device.

Referring to fig. 1, in the lifting device of the present application, the lifting driving mechanism 30 includes a driving motor 31 and a connecting rod 32, the driving motor 31 is configured to be fixed on the main body, one end of the connecting rod 32 is connected to the driving motor 31, and the other end is configured to be connected to the working device, and the driving motor 31 drives the connecting rod 32 to lift so as to drive the working device to lift relative to the main body. Thus, the operation device can stably lift relative to the main body, and the driving motor 31 directly drives the connecting rod 32 to lift, so that the structure is simple and the installation is convenient.

Illustratively, the connecting rod 32 is a screw, the driving motor 31 is provided with a screw connecting portion, the screw connecting portion is provided with a screw hole, the screw is in threaded connection with the screw hole, and the driving motor 31 drives the screw to lift by driving the screw connecting portion to drive the working device to lift relative to the main body.

In other embodiments, the other end of the connecting rod 32 is threaded through the working device and is connected with the working device by threads, and the driving motor 31 drives the connecting rod 32 to rotate.

Illustratively, the lift drive mechanism 30 is connected to the middle of the work device to initially ensure lift balance.

Referring to fig. 1 and 3, the present application further provides a mowing apparatus, which includes a main machine 300, a cutting device 200, and the lifting device described above;

the lifting driving mechanism 30 is fixed to the main frame 300 and connected to the cutting device 200 to drive the cutting device 200 to lift relative to the main frame 300. One end of the linkage piece 21 is connected to the host 300, the other end is movably connected to the guide seat 22, the guide seat 22 is fixed on the cutting device 200, and the linkage piece 21 is configured to slide on the guide seat 22 synchronously with the lifting of the cutting device 200 relative to the host 300.

In the mowing apparatus provided in the present application, the lifting driving mechanism 30 can drive the cutting device 200 to lift relative to the main machine 300. In the process of lifting the cutting device 200 relative to the host 300, the linkage piece 21 of each linkage guide assembly 20 can synchronously slide on the guide seat 22 along with the lifting of the cutting device 200 relative to the host 300, and as the two linkage guide assemblies 20 are respectively positioned at two sides of the lifting driving mechanism 30, the two sides of the cutting device 200 can synchronously lift relative to the host 300, so that the stable posture of the cutting device 200 relative to the host 300 in the lifting process is ensured, and the cutting effect of the cutting device 200 is improved.

Referring to fig. 1 and 4, in some embodiments, the cutting device 200 includes a cutter cover 201, a cutter and a rotation driving member 202, the rotation driving member 202 is disposed on a surface of the cutter cover 201 facing the host 300, the top of the rotation driving member 202 is connected to the connecting rod 32, the cutter is disposed on a side of the cutter cover 201 facing away from the host 300, a rotation motor is disposed in the rotation driving member 202, and the rotation motor penetrates through the cutter cover 201 and is connected to the cutter, and can drive the cutter to rotate under the driving of the rotation motor. Illustratively, the peripheral side of the cutterhead is provided with blades that cut grass during rotation.

In some embodiments, the surface of the main body 300 facing the cutting device 200 is further provided with a receiving hole, and the cutting device 200 can be partially received in the receiving hole during the lifting process, so that the lifting range of the cutting device 200 can be wider. Illustratively, the rotary drive 202 may be partially received in the receiving aperture and adapted to the receiving aperture.

In some embodiments, the peripheral side of the surface of the cutter cover 201 facing away from the host 300 is provided with a baffle 203 surrounding the cutter, so as to avoid cutting. In addition, a plurality of openings are arranged on the baffle 203 away from the cutter cover 201 at intervals for grass to smoothly enter and exit, so that the lawn cutting process is smoother.

Referring to fig. 4, in some embodiments, the host 300 is further provided with a control end 301 to control the lifting of the cutting device 200, the rotation of the cutterhead, and so on.

In some embodiments, the host machine 300 is provided with a moving wheel for the mowing device to move automatically to implement cutting correction of the lawn during travel.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structural changes made by the specification and drawings of the present application or direct/indirect application in other related technical fields are included in the scope of the claims of the present application.

Claims (10)

1. A lifting device for driving a working device of a self-moving device to lift, comprising: a lifting drive mechanism configured to be fixed to a main body of the self-moving apparatus and connected to the working device to drive the working device to lift relative to the main body;

the stabilizing mechanism comprises at least two linkage guide assemblies, the two linkage guide assemblies are respectively located on two sides of the lifting driving mechanism and comprise a linkage piece and a guide seat, one end of the linkage piece is connected with the main body in a structure mode, the other end of the linkage piece is movably connected with the guide seat, the guide seat is fixed to the working device in a structure mode, and the linkage piece is synchronous to slide on the guide seat along with lifting of the working device relative to the main body.

2. The lifting device of claim 1, wherein each of the linkage guide assemblies comprises two linkages and a guide seat, wherein each of the two linkages is configured to slide on the guide seat synchronously with the lifting of the working device relative to the main body, and wherein when one of the linkages slides on the guide seat, the other linkage is simultaneously driven to slide on the guide seat.

3. The lifting device of claim 2, wherein in each of the linkage guide assemblies, the guide base comprises a base and a screw, the base is configured to be fixed on the working device, the screw is rotatably penetrated through the base, two linkage members each comprise a support rod and a nut seat, one end of the support rod is rotatably connected with the nut seat, the other end is configured to be rotatably connected with the main body, and the nut seat is provided with a threaded hole; the screw rod passes through the threaded holes of the nut seats of the two linkage members and is in threaded connection with the threaded holes, and the nut seats of the two linkage members slide along the screw rod in opposite directions or in opposite directions.

4. A lifting device according to claim 3, wherein the nut seats of the two linkages are located on either side of the lifting drive mechanism, and the other ends of the struts of the two linkages are each configured to be rotatably connected to the body on either side of the lifting drive mechanism.

5. A lifting device according to claim 3, wherein the struts of the two linkages are arranged crosswise.

6. A lifting device according to claim 3, wherein the guide holder comprises two bases and a screw rod, the screw rod being rotatably arranged through the bases respectively.

7. A lifting device according to claim 3, wherein the nut seats of the two linkages are located between the bases of the two guide seats.

8. A lifting device according to any one of claims 1 to 7, wherein at least two of the cooperating guide members are symmetrically disposed on either side of the lifting drive.

9. The lifting device according to any one of claims 1 to 7, wherein the lifting drive mechanism includes a drive motor configured to be fixed to the main body, and a connecting rod having one end connected to the drive motor and the other end configured to be connected to the working device, the drive motor driving the connecting rod to lift to drive the working device to lift with respect to the main body.

10. Mowing apparatus comprising a main machine, a cutting device and a lifting device according to any one of claims 1 to 9;

the lifting driving mechanism is fixedly arranged on the host machine and connected with the cutting device so as to drive the cutting device to lift relative to the host machine;

one end of the linkage piece is connected with the host machine, the other end of the linkage piece is movably connected with the guide seat, the guide seat is fixed on the cutting device, and the linkage piece is synchronous to slide on the guide seat along with lifting of the cutting device relative to the host machine.