Floating lifting mechanism and mower

Abstract

The utility model provides a floating lifting mechanism and a mowing machine, and belongs to the technical field of mowing machines, the floating lifting mechanism comprises a connecting rod structure, a limiting part and an adjusting structure, the connecting rod structure comprises a first connecting rod part used for being connected with a cutterhead assembly, and when the first connecting rod part is subjected to upward impact force, the first connecting rod part can drive the cutterhead assembly to move upwards; the limiting part is connected with the connecting rod structure, the adjusting structure is matched with the limiting part to be used for limiting the height of the first connecting rod part, and the height of the first connecting rod part and the cutter head assembly can be changed by adjusting the adjusting structure. According to the floating lifting mechanism provided by the invention, the connecting rod structure is arranged, so that when the cutterhead assembly connected to the first connecting rod part collides with an obstacle, the connecting rod structure can act to drive the cutterhead assembly to rise and float so as to avoid the obstacle; and the heights of the first connecting rod part and the cutter head assembly can be adjusted, so that the requirements of different mowing heights can be met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of lawn mowers, and particularly relates to a floating lifting mechanism and a lawn mower. BACKGROUND

[0002] An intelligent lawn mower is a self-working lawn mower that can automatically mow grass in a limited area. When the cutterhead assembly of the intelligent lawn mower is low in height for cutting, the cutterhead assembly and the mechanism connected with the cutterhead assembly are prone to failure and damage, thereby easily leading to failure of the whole machine. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the application is to provide a floating lifting mechanism and a lawn mower to solve the technical problem that the cutterhead assembly and the mechanism connected with the cutterhead assembly are prone to failure and damage when the cutterhead assembly of the lawn mower hits an obstacle in the prior art.

[0004] To achieve the above purpose, the technical scheme adopted by the application is:

[0005] The first aspect of the application provides a floating lifting mechanism, comprising:

[0006] A connecting rod structure, comprising a first connecting rod part for connecting the cutterhead assembly, when the first connecting rod part is subjected to an upward force, the first connecting rod part can drive the cutterhead assembly to move upward;

[0007] A limiting part, rotationally connected with the connecting rod structure;

[0008] An adjusting structure, cooperating with the limiting part, for limiting the height of the first connecting rod part, and adjusting the adjusting structure can change the height of the first connecting rod part and the cutterhead assembly.

[0009] In an implementation mode, the connecting rod structure further comprises a second connecting rod part, a third connecting rod part and a fourth connecting rod part, the first connecting rod and the second connecting rod are oppositely arranged, the second connecting rod is used for being fixed on the main machine of the equipment, the two ends of the third connecting rod and the two ends of the fourth connecting rod are respectively rotationally connected with the first connecting rod and the second connecting rod, and the limiting part is rotationally connected with the third connecting rod part or the fourth connecting rod part.

[0010] In an implementation mode, the connecting rod structure is at least one, and each connecting rod structure is respectively used for connecting the cutterhead assembly and the main machine of the equipment.

[0011] When the connecting rod structure is multiple, each connecting rod structure is independently arranged; or,

[0012] The third connecting rod part in the two adjacent connecting rod structures is connected through a first intermediate connecting rod part, and / or the fourth connecting rod part in the two adjacent connecting rod structures is connected through a second intermediate connecting rod part.

[0013] In an implementation manner, the first connecting rod part is an integral structure with a cutter head housing of the cutter head assembly.

[0014] In an implementation manner, the third connecting rod and the fourth connecting rod are arranged in parallel; or, the third connecting rod and the fourth connecting rod are arranged in cross.

[0015] In an implementation manner, the floating lifting mechanism further comprises an elastic device connected with the connecting rod structure, the elastic device being compressed when the first connecting rod part moves upward.

[0016] In an implementation manner, one end of the limiting part is rotationally connected with the connecting rod structure, the sliding block is provided with a sliding block connecting frame, the sliding block connecting frame is provided with a sliding groove, and the other end of the limiting part is rotationally connected with the sliding block connecting frame and the limiting part is movable along the sliding groove.

[0017] In an implementation manner, one end of the lead screw is connected with a driving motor; or, one end of the lead screw is provided with a self-locking knob, the knob part of the self-locking knob is pressed, the knob part is separated from the locking part of the self-locking rotation, the knob part is rotated to drive the lead screw to rotate, and the knob part is reset to the clamping with the locking part under the action of the elastic member of the self-locking knob after the pressing of the knob part is cancelled.

[0018] In an implementation manner, the lead screw is arranged between the second connecting rod part in the two connecting rod structures; a guide rail structure is formed between the sliding block and the second connecting rod part, and the guide rail structure is used for guiding the sliding block to move along the axis direction of the lead screw when the lead screw rotates.

[0019] In an implementation manner, the adjusting structure comprises a support frame, a rotating shaft and a cam, the support frame is used for being fixed on the equipment host, the rotating shaft is rotationally connected with the support frame, the cam is arranged on the rotating shaft, and one end of the limiting part is abutted on the circumferential surface of the cam.

[0020] In an implementation manner, the one end of the limiting part for abutting on the cam is a round head; and / or, one end of the rotating shaft is connected with a driving motor or one end of the rotating shaft is provided with a self-locking knob.

[0021] The second aspect of the present application provides a mower, comprising a cutter head assembly, an equipment host and the floating lifting mechanism provided in any of the technical solutions above, the floating lifting mechanism connecting the cutter head assembly and the equipment host.

[0022] The beneficial effects of the present application are that the floating lifting mechanism improved by the embodiment of the present application is provided with a connecting rod structure, so that when the cutter head assembly connected to the first connecting rod part collides with an obstacle, the connecting rod structure can act to drive the cutter head assembly to rise and float to avoid the obstacle; by providing a limiting part and an adjusting structure, the cutter head assembly provided on the first connecting rod part can have a certain height from the ground, and at the same time, the height of the first connecting rod part and the cutter head assembly can be adjusted when the adjusting structure is adjusted, thereby meeting the needs of different mowing heights. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The structural schematic diagram of the floating lifting mechanism and the cutter head assembly provided by the embodiment of the present application is shown in the figure;

[0025] Figure 2 The structural schematic diagram of the floating lifting mechanism and the cutter head assembly provided by the embodiment of the present application is shown in the figure;

[0026] Figure 3 The structural front view schematic diagram of the floating lifting mechanism and the cutter head assembly provided by the embodiment of the present application is shown in the figure (the connecting rod structure is in the first state);

[0027] Figure 4 The structural front view schematic diagram of the floating lifting mechanism and the cutter head assembly provided by the embodiment of the present application is shown in the figure (the connecting rod structure is in the second state);

[0028] Figure 5 The exploded schematic diagram of the floating lifting mechanism and the cutter head assembly provided by the embodiment of the present application is shown in the figure;

[0029] Figure 6 The sectional view schematic diagram of the floating lifting mechanism and the cutter head assembly provided by the embodiment of the present application is shown in the figure;

[0030] Figure 7 The structural schematic diagram of the floating lifting mechanism and the cutter head assembly provided by the embodiment of the present application is shown in the figure;

[0031] Figure 8 The right view schematic diagram of the floating lifting mechanism and the cutter head assembly provided by the embodiment of the present application is shown in the figure;

[0032] Figure 9 The Figure 8 The local enlarged view of A in the figure;

[0033] Figure 10 Principle diagram for adjusting height of first connecting rod part provided by adjusting structure of embodiments of the present application;

[0034] Figure 11 Structure schematic diagram of floating lifting mechanism and cutterhead assembly provided by embodiments of the present application;

[0035] Figure 12 Sectional view schematic diagram of floating lifting mechanism and cutterhead assembly provided by embodiments of the present application;

[0036] Figure 13 Another structure schematic diagram of floating lifting mechanism and cutterhead assembly provided by embodiments of the present application;

[0037] Figure 14 For Figure 13 Local enlarged view at B in FIG. 1;

[0038] Figure 15 Structure schematic diagram of floating lifting mechanism and cutterhead assembly provided by embodiments of the present application;

[0039] Figure 16 For Figure 15 Local enlarged view at C in FIG. 1;

[0040] Figure 17 Another structure schematic diagram of floating lifting mechanism and cutterhead assembly provided by embodiments of the present application.

[0041] In the drawings, various reference numerals refer to:

[0042] 100-floating lifting mechanism; 200-cutterhead assembly;

[0043] 110-connecting rod structure; 120-limiting part; 130-adjusting structure; 140-first intermediate connecting rod part; 150-second intermediate connecting rod part; 160-first supporting pivot; 170-second supporting pivot; 180-rotating position; 190-elastic device;

[0044] 111-first connecting rod part; 112-second connecting rod part; 113-third connecting rod part; 114-fourth connecting rod part;

[0045] 1111-first slot;

[0046] 1121-second slot; 1122-guiding convex strip;

[0047] 1131-third insertion hole; 1132-hanging protrusion;

[0048] 1141-fourth insertion hole;

[0049] 121-round head;

[0050] 131 - support frame; 132 - screw rod assembly; 133 - auxiliary support frame; 134 - self-locking knob; 135 - rotating shaft; 136 - cam; 137 - blocking piece;

[0051] 1321 - screw rod; 1322 - sliding block; 1323 - sliding block connecting frame;

[0052] 13221 - guide groove; 13231 - sliding groove;

[0053] 1341 - knob part; 1342 - locking part; 1343 - elastic member;

[0054] 13411 - first tooth; 13421 - second tooth;

[0055] 1361 - avoiding slot.

[0056] 151 - connecting lug. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings. The embodiments described by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation to the present application.

[0058] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application.

[0059] In order to facilitate the clear description of the technical scheme of the present application, the terms "first", "second" and the like are used to distinguish the same items or similar items with basically the same function and effect. Those skilled in the art can understand that the terms "first", "second" and the like do not limit the quantity and execution order, and the terms "first", "second" and the like do not necessarily mean different.

[0060] In the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] In the present application, "and / or" is only a description of the relationship between the associated objects, which means that there can be three relationships; for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are an "or" relationship.

[0062] It should be noted that in the present application, the words "in an embodiment", "exemplarily", "for example" and the like are used to represent as an example, illustration or description. Any embodiment or design scheme described as "in an embodiment", "exemplarily", "for example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of "in an embodiment", "exemplarily", "for example" and the like is intended to present the relevant concept in a specific way.

[0063] Please refer to Figure 1 , Figure 1 The structure schematic diagram of the floating lifting mechanism 100 and the cutterhead assembly 200 provided in the embodiments of the present application.

[0064] The embodiments of the present application provide a mower, which comprises a cutterhead assembly 200, a device host and a floating lifting mechanism 100, wherein the floating lifting mechanism 100 connects the cutterhead assembly 200 and the device host.

[0065] Please refer to Figure 1 , which shows the cutterhead assembly 200, which can perform mowing operation when in action. In an example, the cutterhead assembly 200 comprises a cutterhead housing 210, a cutterhead driving device and a cutterhead, the cutterhead driving device is installed on the cutterhead housing 210, and the output end of the cutterhead driving device is connected with the cutterhead, which can drive the cutterhead to rotate to perform mowing operation when the cutterhead driving device is in action.

[0066] The device host generally comprises a traveling mechanism, a power system and a control device, etc., the traveling mechanism supports the cutterhead assembly 200 and the power system, etc., the power system provides power for the traveling mechanism, and the control device is used to control the working state of the power system and the cutterhead assembly 200.

[0067] In the embodiments of the present application, the floating lifting mechanism 100 connects the cutterhead assembly 200 and the device host, which can drive the cutterhead assembly 200 to rise and float to avoid the obstacles when the cutterhead assembly 200 hits the obstacles (such as stones or soil slopes, etc.), so as to reduce the impact force of the cutterhead assembly 200 and the obstacles; after the cutterhead assembly 200 passes over the obstacles, the cutterhead assembly 200 can be reset under the action of its own weight.

[0068] The structure of the floating lifting mechanism 100 will be mainly introduced below. For ease of description, please refer toFigure 1 In the embodiments of the present application, the length direction of the floating lifting mechanism 100 is defined as the X-axis direction, the front-rear direction of the floating lifting mechanism 100 is defined as the Y-axis direction, and the height direction of the floating lifting mechanism 100 is defined as the Z-axis direction, wherein the X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other.

[0069] It should be noted that the adjectives such as parallel and / or perpendicular related to the position relationship mentioned in the embodiments of the present application are based on the current process level, not the absolute strict definition in the mathematical sense, and a small amount of deviation is allowed, which is approximately parallel and approximately perpendicular. In addition, when describing the floating lifting mechanism 100, the present embodiment uses the words such as "front", "rear", "left", "right", "up" and "down". The orientation is mainly described according to the orientation of the floating lifting mechanism 100 in the accompanying drawings, and the orientation toward the positive direction of the X-axis is "right", the orientation toward the negative direction of the X-axis is "left", the orientation toward the positive direction of the Y-axis is "front", the orientation toward the negative direction of the Y-axis is "rear", the orientation toward the positive direction of the Z-axis is "up", and the orientation toward the negative direction of the Z-axis is "down". Figure 1

[0070] Please refer to Figure 1 The floating lifting mechanism 100 includes a connecting rod structure 110, a limiting part 120 and an adjusting structure 130.

[0071] The connecting rod structure 110 connects the cutter head assembly 200 and the equipment main machine, and the connecting rod structure 110 is a mechanism connected by a plurality of rigid components through lower pairs (rotary pairs and / or moving pairs). In the embodiments of the present application, please refer to Figure 1 The connecting rod structure 110 includes a first connecting rod part 111, and the first connecting rod part 111 is used to connect the cutter head shell 210 of the cutter head assembly 200. The connecting rod structure 110 provided in the embodiments of the present application has the characteristic that when the first connecting rod part 111 is subjected to an upward force, the first connecting rod part 111 can move upward.

[0072] That is, it can be understood that when the cutter head assembly 200 collides with an obstacle, the cutter head assembly 200 is subjected to an upward force, and then the first connecting rod part 111 is subjected to an upward force, so that the connecting rod structure 110 changes shape to make the first connecting rod part 111 move upward, and then drives the cutter head assembly 200 to rise and float to avoid the obstacle; after the cutter head assembly 200 passes over the obstacle, the cutter head assembly 200 is subjected to the weight of itself, and the connecting rod structure 110 changes shape to make the first connecting rod part 111 move downward, and then the first connecting rod part 111 and the cutter head assembly 200 are reset.

[0073] ​In an example, the first connecting rod part 111 is detachably connected with the cutter head housing 210, for example, the first connecting rod part 111 is detachably connected with the cutter head housing 210 by screws or bolts; in other examples, the first connecting rod part 111 is not detachably connected with the cutter head housing 210, for example, the first connecting rod part 111 is welded with the cutter head housing 210 or the first connecting rod part 111 is integrally formed on the cutter head housing 210. Please refer to Figure 1 , which shows that the first connecting rod part 111 is integrally formed on the cutter head housing 210.

[0074] It is worth noting that the shape of the first connecting rod part 111 is not necessarily an elongated rod, and the specific shape of the first connecting rod part 111 can not be limited, but the first connecting rod part 111 needs to have the function of one of the rods in the connecting rod mechanism.

[0075] In an example, please refer to Figure 1 , the connecting rod structure 110 further comprises a second connecting rod part 112, which is used to be connected with the device main machine.

[0076] In an example, the first connecting rod part 111 and the second connecting rod part 112 are connected by a plurality of connecting rods, for example, the first connecting rod part 111 and the second connecting rod part 112 are connected by two or three or four or other number of connecting rods.

[0077] The floating lifting mechanism 100 provided by the embodiment of the present application further comprises a limiting part 120 and an adjusting structure 130. Please refer to Figure 1 , which shows the adjusting structure 130 and the limiting part 120, the limiting part 120 is connected with the connecting rod structure 110, and at the same time, the limiting part 120 cooperates with the adjusting structure 130.

[0078] The adjusting structure 130 can be supported on the second connecting rod part 112, or the adjusting structure 130 can be supported on the device main machine, or the adjusting structure 130 is connected with both the second connecting rod part 112 and the device main body. Please refer to Figure 1 , which shows that the adjusting structure 130 is connected with the second connecting rod part 112.

[0079] As described above, when the cutter head housing 210 passes over the obstacle, the cutter head assembly 200 moves downward under the action of its own weight, and the connecting rod structure 110 acts so that the first connecting rod part 111 moves downward. In order to avoid the cutter head assembly 200 moving downward to contact the ground under the action of the weight of the cutter head assembly 200, in the embodiment of the present application, the limiting part 120 and the adjusting structure 130 are added to limit the height of the first connecting rod part 111, and further limit the height of the cutter head assembly 200.

[0080] Specifically, when the cutterhead assembly 200 hits an obstacle, the connecting rod structure 110 changes shape to enable the first connecting rod part 111 to move upward, and since the limiting part 120 is connected to the connecting rod structure 110, the connecting rod structure 110 drives the limiting part 120 to move when it moves. It should be noted that the connection mode of the limiting part 120 with the connecting rod structure 110 and the adjusting structure 130 does not affect the upward floating of the cutterhead assembly 200 when it hits an obstacle. When the cutterhead assembly 200 passes over the obstacle, the cutterhead assembly 200 moves downward under its own weight, and the connecting rod structure 110 changes shape to enable the first connecting rod part 111 to move downward. When the limiting part 120 moves to the reset position, the limiting part 120 cooperates with the adjusting structure 130 to prevent the limiting part 120 from continuing to move. When the limiting part 120 cannot move, it prevents the connecting rod structure 110 from moving, so that the first connecting rod part 111 and the cutterhead assembly 200 stay at the desired height.

[0081] It should be noted that in the embodiments of the present application, adjusting the adjusting structure 130 can also change the height of the first connecting rod part 111. For example, when the adjusting structure 130 is adjusted to the first position, since the adjusting structure 130 cooperates with the limiting part 120 and the limiting part 120 is connected to the connecting rod structure 110, the limiting part 120 can be limited to the first state and the first connecting rod part 111 and the cutterhead assembly 200 can be located at the first height. When the adjusting structure 130 is adjusted to the second position, the limiting part 120 can be limited to the second state and the first connecting rod part 111 and the cutterhead assembly 200 can be located at the second height. The first height and the second height are different heights, thereby achieving the function of adjusting the adjusting structure 130 to also change the height of the cutterhead assembly 200.

[0082] It should be noted that the above examples describe that the first connecting rod part 111 and the cutterhead assembly 200 can be at the first height or the second height. In one example, the height of the first connecting rod part 111 and the cutterhead assembly 200 includes the highest height and the lowest height, and by adjusting the adjusting structure 130, the height of the first connecting rod part 111 and the cutterhead assembly 200 can be adjusted between the highest height and the lowest height.

[0083] Regarding the limiting part 120, in one example, the limiting part 120 is a connecting rope or a rod or a connecting rod mechanism, etc. For example, when the limiting part 120 is a connecting rope, one end of the connecting rope is fixed to the connecting rod structure 110 and the other end of the connecting rope is connected to the adjusting structure 130. By adjusting the adjusting structure 130, the height of the end of the connecting rope connected to the adjusting structure 130 can be changed.

[0084] In the embodiment of the present application, the connecting rod structure 110 is arranged, so that when the cutter head assembly 200 connected to the first connecting rod part 111 hits an obstacle, the connecting rod structure 110 can act to drive the cutter head assembly 200 to rise and float to avoid the obstacle; by arranging the limiting part 120 and the adjusting structure 130, the cutter head assembly 200 arranged on the first connecting rod part 111 can have a certain height from the ground, and at the same time, the height of the first connecting rod part 111 and the cutter head assembly 200 can be adjusted by adjusting the adjusting structure 130, thereby meeting the requirements of different mowing heights.

[0085] Please refer to Figure 2-5 , Figure 2 The structural schematic diagram of the floating lifting mechanism 100 and the cutter head assembly 200 provided in the embodiment of the present application is shown in FIG. 1. Figure 3 The structural front view schematic diagram of the floating lifting mechanism 100 and the cutter head assembly 200 provided in the embodiment of the present application (the connecting rod structure 110 is in the first state) is shown in FIG. 2. Figure 4 The structural front view schematic diagram of the floating lifting mechanism 100 and the cutter head assembly 200 provided in the embodiment of the present application (the connecting rod structure 110 is in the second state) is shown in FIG. 3. Figure 5 The exploded schematic diagram of the floating lifting mechanism 100 and the cutter head assembly 200 provided in the embodiment of the present application is shown in FIG. 4.

[0086] In one embodiment, please refer to Figure 2 The connecting rod structure 110 further includes a second connecting rod part 112, a third connecting rod part 113 and a fourth connecting rod part 114, the first connecting rod part 111 and the second connecting rod part 112 are oppositely arranged, the second connecting rod part 112 is used for being fixed on the device host, the two ends of the third connecting rod part 113 and the fourth connecting rod part 114 are respectively rotationally connected with the first connecting rod part 111 and the second connecting rod part 112, and the limiting part 120 is rotationally connected with the third connecting rod part 113 or the fourth connecting rod part 114.

[0087] In one example, the second connecting rod part 112 is detachably connected with the device host, for example, the second connecting rod part 112 is detachably connected with the device host through screws or bolts; in other examples, the second connecting rod part 112 is non-detachably connected with the device host, for example, the second connecting rod part 112 is welded with the frame body of the device host or the second connecting rod part 112 is integrally formed on the frame body of the device host.

[0088] It is worth noting that the shape of the second connecting rod part 112 is not necessarily an elongated rod, and the specific shape of the second connecting rod part 112 can not be limited, but the second connecting rod part 112 needs to have the function of one of the rod parts in the connecting rod mechanism, and similarly, the specific shape of the third connecting rod part 113 and the fourth connecting rod part 114 can not be limited, but the third connecting rod part 113 and the fourth connecting rod part 114 need to have the function of one of the rod parts in the connecting rod mechanism.

[0089] In an example, please refer to Figure 2 , the first link part 111 and the second link part 112 are arranged in parallel, the third link part 113 and the fourth link part 114 are arranged in parallel, the third link part 113 is arranged above the fourth link part 114, and the first link part 111, the second link part 112, the third link part 113 and the fourth link part 114 form a parallelogram structure; or, in other examples, the first link part 111 and the second link part 112 are arranged in parallel, the third link part 113 and the fourth link part 114 are arranged in cross, and the third link part 113 and the fourth link part 114 can be rotatably connected at the cross position.

[0090] In an example, the link structure 110 only includes the first link part 111, the second link part 112, the third link part 113 and the fourth link part 114; in other examples, the link structure 110 further includes one or more intermediate auxiliary link parts, for example, when the first link part 111, the second link part 112, the third link part 113 and the fourth link part 114 form a parallelogram structure, two ends of the intermediate auxiliary link part can be rotatably connected to the first link part 111 and the second link part 112, and the intermediate auxiliary link part is arranged in parallel with the third link part 113 and the fourth link part 114; or, for example, two ends of the intermediate auxiliary link part can be rotatably connected to the third link part 113 and the fourth link part 114, and the intermediate auxiliary link part is arranged in parallel with the first link part 111 and the second link part 112.

[0091] In an example, the first link part 111, the second link part 112, the third link part 113 and the fourth link part 114 are hollow structures, so as to reduce the weight of the link structure 110.

[0092] In an example, the length extension direction of the first link part 111 is along the vertical direction; in other examples, the length extension direction of the first link part 111 has a small angle with the vertical direction, for example, the angle is not more than 10°, etc.

[0093] Taking the first link part 111, the second link part 112, the third link part 113 and the fourth link part 114 forming a parallelogram structure as an example, please refer to Figure 3 , it is shown that the link structure 110 is in the first state under the limitation of the limiting part 120 and the adjusting structure 130, at this time, when the cutter head assembly 200 hits an obstacle, the cutter head assembly 200 is subjected to an upward force, so that the link structure 110 can move upward by changing shape, please refer to Figure 4 , it is shown that the shape of the link structure 110 after deformation, wherein Figure 4The displayed state of the connecting rod structure 110 can be referred to as a second state. In comparison with Figure 3 and Figure 4 the first state and the second state of the connecting rod structure 110, Figure 4 the height difference between the first connecting rod part 111 and the second connecting rod part 112 is reduced, Figure 4 the angle between the first connecting rod part 111 and the third connecting rod part 113 and the fourth connecting rod part 114 is increased. After the disc assembly passes over the obstacle, under the action of its own weight, the connecting rod structure 110 changes shape to move the first connecting rod part 111 downward, and then the disc assembly 200 and the first connecting rod part 111 are reset to the first state as Figure 3 schematically shown.

[0094] In the embodiments of the present application, by providing the connecting rod structure 110 further including the second connecting rod part 112, the third connecting rod part 113 and the fourth connecting rod part 114, while realizing that the connecting rod structure 110 can act to drive the disc assembly 200 to float upward to avoid obstacles, the structure of the connecting rod structure 110 is simple.

[0095] In an embodiment, the connecting rod structure 110 is at least one, and each connecting rod structure 110 is used to connect the disc assembly 200 and the device host respectively.

[0096] The connecting rod structure 110 is at least one, that is, the number of connecting rod structures 110 can be one or two or three, etc. Please refer to Figure 5 , which schematically shows that the number of connecting rod structures 110 is two. Each connecting rod structure 110 includes a first connecting rod part 111 and a second connecting rod part 112, the first connecting rod part 111 is connected with the disc assembly 200, and the second connecting rod part 112 is connected with the device host.

[0097] It is worth noting that when the number of connecting rod structures 110 is one, it is beneficial to simplify the structure of the floating lifting mechanism 100, and when the number of connecting rod structures 110 is more than two, it is beneficial to the stable operation of the disc assembly 200, that is, a reasonable number of connecting rod structures 110 can be selected and set according to actual conditions.

[0098] In an example, when the number of connecting rod structures 110 is more than two, the first connecting rod part 111 of each connecting rod structure 110 is connected with the disc assembly 200 in the same way; or, the first connecting rod part 111 of each connecting rod structure 110 is connected with the disc assembly 200 in different ways.

[0099] In an example, when the number of the connecting rod structures 110 is more than two, the second connecting rod part 112 of each connecting rod structure 110 is connected to the device main body in the same way; or, the second connecting rod part 112 of each connecting rod structure 110 is connected to the device main body in different ways.

[0100] In an example, when the number of the connecting rod structures 110 is more than two (i.e. multiple), each connecting rod structure 110 is independently arranged; or, in another example, when the number of the connecting rod structures 110 is more than two (i.e. multiple), the third connecting rod part 113 of two adjacent connecting rod structures 110 is connected through an intermediate connecting rod part, and / or, the fourth connecting rod part 114 of two adjacent connecting rod structures 110 is connected through an intermediate connecting rod part.

[0101] Each connecting rod structure 110 is independently arranged. Taking two connecting rod structures 110 as an example, the first connecting rod part 111 of the two connecting rod structures 110 is fixed on the cutter head assembly 200, the second connecting rod part 112 of the two connecting rod structures 110 is fixed on the device main body, there is no connecting rod between the third connecting rod parts 113 of the two connecting rod structures 110, and there is no connecting rod between the fourth connecting rod parts 114 of the two connecting rod structures 110, which can be referred to as that the two connecting rod structures 110 are independently arranged. It is worth noting that by arranging each connecting rod structure 110 to be independently arranged, the structure of the floating lifting mechanism 100 can be simplified.

[0102] In an example, referring to Figure 5 , the number of the connecting rod structures 110 is two, the third connecting rod part 113 of two adjacent connecting rod structures 110 is connected through a first intermediate connecting rod part 140, and the fourth connecting rod part 114 of two adjacent connecting rod structures 110 is connected through a second intermediate connecting rod part 150.

[0103] In an example, the number of the first intermediate connecting rod part 140 is more than one, one end of the first intermediate connecting rod part 140 is detachably connected or non-detachably connected to the third connecting rod part 113 of one of the connecting rod structures 110, and the other end of the first intermediate connecting rod part 140 is detachably connected or non-detachably connected to the third connecting rod part 113 of the other of the connecting rod structures 110.

[0104] In an example, the first intermediate connecting rod part 140 is integrally formed on the two third connecting rod parts 113; or, the two ends of the first intermediate connecting rod part 140 are welded on the two third connecting rod parts 113.

[0105] In an example, the number of the second intermediate connecting rod portions 150 is more than one, one end of the second intermediate connecting rod portion 150 is detachably connected or non-detachably connected with the fourth connecting rod portion 114 of one of the connecting rod structures 110, and the other end of the second intermediate connecting rod portion 150 is detachably connected or non-detachably connected with the fourth connecting rod portion 114 of another of the connecting rod structures 110.

[0106] In an example, the second intermediate connecting rod portion 150 is integrally formed on the two fourth connecting rod portions 114, or the two ends of the second intermediate connecting rod portion 150 are welded on the two fourth connecting rod portions 114.

[0107] In an example, one end of the limiting portion 120 is connected on the first intermediate connecting rod portion 140 or the second intermediate connecting rod portion 150.

[0108] In the embodiments of the present application, by connecting the third connecting rod portions 113 in the two adjacent connecting rod structures 110 through the first intermediate connecting rod portion 140 and / or connecting the fourth connecting rod portions 114 in the two adjacent connecting rod structures 110 through the second intermediate connecting rod portion 150, the stability between the connecting rod structures 110 is increased, and the structural stability of the floating lifting mechanism 100 is increased.

[0109] In an embodiment, please refer to Figure 5 , the first slot 1111 is arranged on the first connecting rod portion 111, the second slot 1121 is arranged on the second connecting rod portion 112, and the two ends of the third connecting rod portion 113 and the fourth connecting rod portion 114 are respectively inserted into the first slot 1111 and the second slot 1121.

[0110] The two ends of the third connecting rod portion 113 are respectively provided with the third insertion hole 1131, and the two ends of the fourth connecting rod portion 114 are respectively provided with the third insertion hole 1131, please refer to Figure 5 , the third insertion hole 1131 and the fourth insertion hole 1141 are shown. The connecting shaft is passed through the third insertion hole 1131 on the third connecting rod portion 113 and the two ends of the connecting shaft are supported on the first connecting rod portion 111, so as to realize the rotary connection of one end of the third connecting rod portion 113 with one end of the first connecting rod portion 111. Similarly, the rotary connection of the third connecting rod portion 113 with the second connecting rod portion 112 and the rotary connection of the fourth connecting rod portion 114 with the first connecting rod portion 111 and the second connecting rod portion 112 can adopt the connection mode of the third connecting rod portion 113 with the first connecting rod portion 111.

[0111] In the embodiments of the present application, by inserting the two ends of the third connecting rod portion 113 and the fourth connecting rod portion 114 into the first slot 1111 and the second slot 1121 respectively, the volume of the connecting rod structure 110 can be minimized, and the structure of the floating lifting mechanism 100 is compact.

[0112] In an embodiment, please refer to Figure 5 The two first link portions 111 of the two link structures 110 are symmetrically arranged at two sides of the cutter head housing 210 respectively, and the two first link portions 111 of the two link structures 110 are integrally formed on the cutter head housing 210.

[0113] In the embodiment, the first link portions 111 of the two link structures 110 are integrally formed on the cutter head housing 210, so that the number of parts can be reduced.

[0114] In an embodiment, please refer to Figure 2 The adjusting structure 130 comprises a support frame 131, and the second link portion 112 is supported on the support frame 131, and the support frame 131 is used for being connected with a device host.

[0115] In an example, the second link portion 112 is detachably connected on the support frame 131; in other examples, the second link portion 112 is non-detachably connected on the support frame 131, for example, the second link portion 112 is integrally formed on the support frame 131.

[0116] In the embodiment, the second link portion 112 is supported on the support frame 131, so that the second link portion 112 of the link structure 110 and the adjusting structure 130 can be fixed on the device host at the same time.

[0117] Please refer to Figure 6-10 , Figure 6 a sectional view of the floating lifting mechanism 100 and the cutter head assembly 200 provided in the embodiment, Figure 7 a structural view of the floating lifting mechanism 100 and the cutter head assembly 200 provided in the embodiment, Figure 8 a right view of the floating lifting mechanism 100 and the cutter head assembly 200 provided in the embodiment, Figure 9 is Figure 8 a local enlarged view of A in FIG. Figure 10 a principle diagram of the adjusting structure 130 adjusting the height of the first link portion 111.

[0118] In an embodiment, the adjusting structure 130 comprises a support frame 131 and a screw assembly 132, the support frame 131 is used for being fixed on a device host, a screw rod 1321 of the screw assembly 132 is rotationally connected with the support frame 131, and the limiting portion 120 is connected with a sliding block 1322 of the screw assembly 132.

[0119] Please refer to Figure 8The screw rod 1321 is supported on the support frame 131 and rotationally connected with the support frame 131, the screw rod 1321 is threadedly connected with the sliding block 1322, when the screw rod 1321 rotates, the sliding block 1322 can move along the axial direction of the screw rod 1321. The limiting part 120 is connected with the sliding block 1322 of the screw assembly 132, when the sliding block 1322 moves along the screw rod 1321, the limiting part 120 can be driven to move together, thereby realizing the height adjustment of the cutter disc assembly 200.

[0120] In an example, the support frame 131 is provided with a matching shaft, the matching shaft is inserted into one end of the screw rod 1321 and rotationally connected with the screw rod 1321; in other examples, one end of the screw rod 1321 is provided with a matching shaft, the matching shaft is inserted into a hole on the support frame 131 and rotationally connected with the support frame 131.

[0121] In an example, please refer to Figure 8 The adjusting structure 130 further comprises an auxiliary support frame 133, the auxiliary support frame 133 is connected at the top of the second connecting rod part 112, and the screw rod 1321 passes through the auxiliary support frame 133. It is worth mentioning that, by arranging the auxiliary support frame 133, the structural stability of the adjusting structure 130 is facilitated.

[0122] In an example, the limiting part 120 can be a connecting rope or the limiting part 120 can be a rod.

[0123] In the embodiment, the adjusting structure 130 comprises the screw assembly 132, so as to facilitate the accurate and stable height adjustment of the cutter disc assembly 200.

[0124] In an example, please refer to Figure 6 One end of the limiting part 120 is rotationally connected with the connecting rod structure 110, the sliding block 1322 is provided with a sliding block connecting frame 1323, the sliding block connecting frame 1323 is provided with a sliding groove 13231, the other end of the limiting part 120 is rotationally connected with the sliding block connecting frame 1323 and the limiting part 120 can move along the sliding groove 13231.

[0125] In an example, please refer to Figure 6 One end of the limiting part 120 is rotationally connected with the second intermediate connecting rod part 150; or, one end of the limiting part 120 can also be rotationally connected with the first intermediate connecting rod part 140.

[0126] It is worth mentioning that when the connecting rod structure 110 is one or more than two and the first intermediate connecting rod part 140 and the second intermediate connecting rod part 150 are not arranged between the two connecting rod structures 110, the support rod part can be arranged on one of the third connecting rod parts 113 or one of the fourth connecting rod parts 114, and one end of the limiting part 120 is rotatably connected with the support rod part. Or, even if the first intermediate connecting rod part 140 or the second intermediate connecting rod part 150 is arranged on the connecting rod structure 110, the support rod part rotatably connected with one end of the limiting part 120 can be additionally arranged on the connecting rod structure 110.

[0127] In an example, please refer to Figure 6 The connecting ears 151 are arranged on the second intermediate connecting rod part 150, one end of the limiting part 120 is inserted between the two connecting ears 151, the end of the limiting part 120 inserted between the two connecting ears 151 is connected with the two connecting ears 151 through the first support rotating shaft 160, and the first support rotating shaft 160 is rotatably connected with the limiting part 120 and / or the first support rotating shaft 160 is rotatably connected with the connecting ears 151.

[0128] Please refer to Figure 6 , it is shown that the other end of the limiting part 120 is rotatably connected with the sliding block connecting frame 1323, and the sliding block connecting frame 1323 is provided with a sliding groove 13231. In an example, the length extension direction of the sliding groove 13231 is along the vertical direction, or the length extension direction of the sliding groove 13231 has an angle with the vertical direction.

[0129] Please refer back to Figure 3 and Figure 4 , Figure 3 It is shown that the rotatable connection position of the limiting part 120 and the sliding block connecting frame 1323 is located at the low end of the sliding groove 13231, Figure 4 It is shown that the rotatable connection position of the limiting part 120 and the sliding block connecting frame 1323 is located at the high end of the sliding groove 13231. When the cutterhead assembly 200 hits the obstacle, the first connecting rod part 111 can move upward, please compare Figure 3 and Figure 4 Since the first connecting rod part 111 moves upward, the angle between the fourth connecting rod part 114 and the second connecting rod part 112 is reduced, the fourth connecting rod part 114 pushes the limiting part 120 so that one end of the limiting part 120 moves upward along the sliding groove 13231, when the rotatable connection position of the limiting part 120 and the sliding block connecting frame 1323 is located at the high end of the sliding groove 13231, the limiting part 120 cannot continue to act, thereby limiting the action of the fourth connecting rod part 114, so that the first connecting rod part 111 and the cutterhead assembly 200 cannot continue to move upward.

[0130] That is, when the limiting portion 120 is a component with certain hardness and rigidity, the sliding groove 13231 needs to be arranged on the sliding block connecting frame 1323, and the limiting portion 120 needs to be arranged to be movable along the sliding groove 13231, so that the cutter head assembly 200 and the first connecting rod portion 111 can move upward when the cutter head assembly 200 hits the obstacle.

[0131] In addition, when the rotating connection position of the limiting portion 120 and the sliding block connecting frame 1323 is located at the high end of the sliding groove 13231, the limiting portion 120 cannot continue to act, and therefore, by arranging the length of the sliding groove 13231, the upward buffering distance of the cutter head assembly 200 when the cutter head assembly 200 is hit by the obstacle can be limited. That is, the length value of the sliding groove 13231 in the length direction can be reasonably arranged according to the actual situation.

[0132] It is worth noting that the above describes that when the rotating connection position of the limiting portion 120 and the sliding block connecting frame 1323 is located at the high end of the sliding groove 13231, the upward movement of the cutter head assembly 200 and the first connecting rod portion 111 is limited. Other ways to limit the upward movement of the cutter head assembly 200 and the first connecting rod portion 111 can also be used, such as when the cutter head assembly 200 hits the obstacle and moves upward, the cutter head assembly 200, such as the cutter head housing 210, is in contact with the equipment host, to limit the upward movement of the cutter head assembly 200 and the first connecting rod portion 111.

[0133] In an example, please refer to Figure 6 and Figure 7 , one end of the limiting portion 120 is inserted into the sliding block connecting frame 1323, and the end of the limiting portion 120 inserted into the sliding block connecting frame 1323 is connected with the sliding block connecting frame 1323 through the second support rotating shaft 170, and the second support rotating shaft 170 is rotatably connected with the limiting portion 120 or the second support rotating shaft 170 is rotatably connected with the sliding block connecting frame 1323. Please refer to Figure 6 , the opposite ends of the sliding block connecting frame 1323 are both provided with the sliding groove 13231, and the two ends of the second support rotating shaft 170 are respectively inserted into the corresponding sliding grooves 13231, and the second support rotating shaft 170 is movable along the length direction of the sliding groove 13231.

[0134] In the embodiment of the present application, one end of the limiting portion 120 is rotatably connected with the sliding block connecting frame 1323, and the sliding block connecting frame 1323 is arranged on the sliding block 1322, and when the sliding block 1322 moves along the axial direction of the lead screw 1321, the one end of the limiting portion 120 and the sliding block connecting frame 1323 will act. Please refer to Figure 10 , Figure 10 for the principle diagram of adjusting the height of the first connecting rod portion 111 by the adjusting structure 130. Compare Figure 10 (a) and (b) in Figure 10the height of the rotation position 180 of the limiting portion 120 and the sliding block connecting frame 1323 in (b) is lower than Figure 10 the height of the rotation position 180 of the limiting portion 120 and the sliding block connecting frame 1323 in (a) is higher than Figure 10 the height of the first connecting rod portion 111 in (b) is lower than the height of the first connecting rod portion 111. That is, when the screw rod 1321 is rotated to lower the height of the sliding block 1322, the height of the first connecting rod portion 111 and the height of the tool disc assembly 200 can be lowered, and when the screw rod 1321 is rotated to raise the height of the sliding block 1322, the height of the first connecting rod portion 111 and the height of the tool disc assembly 200 can be raised.

[0135] In the embodiment, one end of the limiting portion 120 is rotationally connected to the connecting rod structure 110, the other end is rotationally connected to the sliding block connecting frame 1323 and can move along the sliding groove 13231, which not only satisfies the requirement that the tool disc assembly 200 can be upwardly buffered when impacted by an obstacle, but also facilitates the simple structure of the floating lifting mechanism 100.

[0136] In one embodiment, please refer to Figure 8 The screw rod 1321 is arranged between the two second connecting rod portions 112, which facilitates the compact structure.

[0137] In one embodiment, a guide rail structure is formed between the sliding block 1322 and the second connecting rod portion 112, which is used for the sliding block 1322 to move along the axis direction of the screw rod 1321 when the screw rod 1321 is rotated; in other embodiments, a guide frame body can be additionally arranged on the support frame 131 of the adjusting structure 130, and a guide rail structure is formed between the guide frame body and the sliding block 1322, which is used for the sliding block 1322 to move along the axis direction of the screw rod 1321 when the screw rod 1321 is rotated.

[0138] When the guide rail structure is formed between the sliding block 1322 and the second connecting rod portion 112, the sliding block 1322 can be arranged to form the guide rail structure with one of the second connecting rod portions 112, or the sliding block 1322 can be arranged to form the guide rail structure with both of the second connecting rod portions 112.

[0139] In one example, the guide sliding groove 13221 is arranged on one of the sliding block 1322 and the second connecting rod portion 112, and the guide protrusion 1122 is arranged on the other one, and the guide protrusion 1122 is located in the guide sliding groove 13221 to form the guide rail structure. Please refer to Figure 9 which shows that the guide protrusion 1122 is arranged on the second connecting rod portion 112, and the guide sliding groove 13221 is arranged on the sliding block 1322, and the length extension direction of the guide protrusion 1122 is along the vertical direction.

[0140] In the embodiment, the screw rod 1321 is arranged between the two second connecting rod portions 112, and the sliding block 1322 and the second connecting rod portion 112 are arranged to form a guide rail structure, so that the sliding block 1322 can move along the axis direction of the screw rod 1321, and the structure of the floating lifting mechanism 100 is compact.

[0141] In an embodiment, one end of the screw rod 1321 is connected with a driving motor, and the driving motor can drive the screw rod 1321 to rotate; or, one end of the screw rod 1321 is connected with a self-locking knob 134, and the self-locking knob 134 is manually operated to drive the screw rod 1321 to rotate.

[0142] When one end of the screw rod 1321 is connected with the driving motor, the driving motor can drive the rotating shaft 135 to rotate when the driving motor works, and the rotating shaft 135 does not rotate when the driving motor does not work.

[0143] In an example, one end of the screw rod 1321 can be directly connected with the driving motor, or one end of the screw rod 1321 can be connected with the driving motor through a speed reducer or other transmission structure. It should be noted that, by arranging that one end of the screw rod 1321 is connected with the driving motor, the automatic control of the height adjustment of the tool disc assembly 200 can be facilitated.

[0144] When one end of the screw rod 1321 is provided with the self-locking knob 134, the operation of the self-locking knob 134 can be as follows: when the knob portion 1341 of the self-locking knob 134 is not pressed, the self-locking knob 134 can be in a locked state, the knob portion 1341 cannot be rotated, and thus the screw rod 1321 cannot rotate; when the knob portion 1341 of the self-locking knob 134 is pressed downward, the knob portion 1341 can rotate when the knob portion 1341 is rotated, and thus the screw rod 1321 rotates.

[0145] In a specific example, please refer to Figure 8The self-locking knob 134 comprises a knob portion 1341, a locking portion 1342 and an elastic member 1343. The knob portion 1341 is arranged at one end of the screw rod 1321 and is slidable relative to the screw rod 1321. The elastic member 1343 is sleeved on the screw rod 1321 and abuts against the knob portion 1341 and the auxiliary support 133 at two ends respectively. The locking portion 1342 is sleeved on the knob portion 1341 and is movable along the height direction. The locking portion 1342 is used for being fixed on the equipment host. When the knob portion 1341 is not pressed downward, the first tooth 13411 on the knob portion 1341 is engaged with the second tooth 13421 on the locking portion 1342 so that the two are clamped, thereby making the knob portion 1341 unable to be rotated, and the knob portion 1341 is in a locked state. When the knob portion 1341 is pressed downward, the second tooth 13421 on the knob portion 1341 is disengaged from the first tooth 13411 on the knob portion 1341, so that the knob portion 1341 can be rotated. When the pressing on the knob portion 1341 is cancelled, the knob portion 1341 can be reset under the action of the elastic member 1343, so that the first tooth 13411 on the knob portion 1341 is engaged with the second tooth 13421 on the locking portion 1342.

[0146] It should be noted that the above specifically introduces an example of the self-locking knob 134, and the structure of the self-locking knob 134 can not be limited to the above example, and other structures related to the prior art can also be adopted.

[0147] In the embodiment of the present application, by arranging the self-locking knob 134 at one end of the screw rod 1321, the structure of the floating lifting mechanism 100 can be simplified, and the cost of the floating lifting mechanism 100 can be reduced.

[0148] Please refer to Figure 11-14 , Figure 11 The structure schematic diagram of the floating lifting mechanism 100 and the cutterhead assembly 200 provided in the embodiment of the present application is shown in Figure 12 The sectional view schematic diagram of the floating lifting mechanism 100 and the cutterhead assembly 200 provided in the embodiment of the present application is shown in Figure 13 Another structure schematic diagram of the floating lifting mechanism 100 and the cutterhead assembly 200 provided in the embodiment of the present application is shown in Figure 14 is Figure 13 The local enlarged view of B in FIG. 13 is shown in FIG. 14.

[0149] In an embodiment, please refer to Figure 11 and Figure 12 The adjusting structure 130 comprises a support 131, a rotating shaft 135 and a cam 136. The support 131 is used for being fixed on the equipment host. The rotating shaft 135 is rotationally connected with the support 131. The cam 136 is arranged on the rotating shaft 135. One end of the limiting portion 120 abuts against the circumferential surface of the cam 136.

[0150] In one example, please refer to Figure 12 One end of the limiting part 120 is rotationally connected with the first intermediate connecting rod part 140; or, one end of the limiting part 120 can also be rotationally connected with the second intermediate connecting rod part 150.

[0151] It is worth mentioning that when the connecting rod structure 110 is one or more than two and the first intermediate connecting rod part 140 and the second intermediate connecting rod part 150 are not arranged between the two connecting rod structures 110, a supporting rod part can be arranged on one of the third connecting rod parts 113 or one of the fourth connecting rod parts 114, and one end of the limiting part 120 is rotationally connected with the supporting rod part. Or, even if the first intermediate connecting rod part 140 or the second intermediate connecting rod part 150 is arranged on the connecting rod structure 110, a supporting rod part rotationally connected with one end of the limiting part 120 can also be additionally arranged on the connecting rod structure 110.

[0152] Please refer to Figure 12 The rotating shaft 135 is supported on the support frame 131, and in one example, a matching shaft is arranged on the support frame 131, the matching shaft is inserted into one end of the rotating shaft 135 and the two are rotationally connected; in other examples, a matching shaft is arranged on one end of the rotating shaft 135, the matching shaft is inserted into a hole on the support frame 131 and the matching shaft is rotationally connected with the support frame 131.

[0153] Please refer to Figure 12 It is shown that one end of the limiting part 120 is in contact with the circumferential side surface of the cam 136, and due to the action of the gravity of the cutter head assembly 200, one end of the limiting part 120 is always in contact with the circumferential side surface of the cam 136. By rotating the cam 136, the inclination state of the limiting part 120 can be changed, and thus the connecting rod structure 110 can be actuated to realize the adjustment of the height of the first connecting rod part 111 and the cutter head assembly 200. For example, the circumferential side surface of the cam 136 includes a first position area and a second position area, and the distance from the first position area to the center axis of the rotating shaft 135 is less than the distance from the second position area to the center axis of the rotating shaft 135. Please refer to Figure 12 When the limiting part 120 is rotationally connected with the first intermediate connecting rod part 140, compared with the case that one end of the limiting part 120 abuts against the second position area of the cam 136, when one end of the limiting part 120 abuts against the first position area of the cam 136, the inclination degree of the limiting part 120 increases, and thus the height of the first connecting rod part 111 and the cutter head assembly 200 is reduced.

[0154] In one example, the circumferential side surface of the cam 136 includes a first side area, and the distance from the first side area to the center axis of the rotating shaft 135 gradually decreases in the clockwise or counterclockwise direction of the rotating shaft 135.

[0155] In one example, when the cutterhead assembly 200 moves upward upon hitting an obstacle, the cutterhead assembly 200, such as the cutterhead housing 210, is in contact with the device mainframe to limit the cutterhead assembly 200 and the first connecting rod part 111 from continuing to move upward.

[0156] In the embodiments of the present application, by arranging the adjusting structure 130 including the support frame 131, the rotating shaft 135 and the cam 136, the height of the cutterhead assembly 200 can be adjusted in cooperation with the limiting part 120, and the structure is simple and the cost can be reduced.

[0157] In one example in the foregoing, the circumferential side of the cam 136 includes a first side area, and the distance from the center axis of the rotating shaft 135 gradually decreases in the clockwise or counterclockwise direction of the rotating shaft 135, wherein in one embodiment, the first side area of the cam 136 is provided with an avoiding slot 1361, please refer to Figure 14 The avoiding slot 1361 is open to the bottom surface of the cam 136, and the avoiding slot 1361 is respectively formed with a first slot end surface and a second slot end surface in the circumferential direction of the cam 136; please refer to Figure 14 The support frame 131 is provided with a blocking piece 137, which can be in contact with the first slot end surface and the second slot end surface to limit the rotation range of the cam 136.

[0158] For example, when the cam 136 rotates clockwise, if it rotates to the first slot end surface in contact with the blocking piece 137, the blocking piece 137 limits the cam 136 to continue to rotate clockwise; when the cam 136 rotates counterclockwise, if it rotates to the second slot end surface in contact with the blocking piece 137, the blocking piece 137 limits the cam 136 to continue to rotate counterclockwise.

[0159] In one example, the first side area of the cam 136 is the area of half the circumferential surface of the cam 136, and in other examples, the first side area of the cam 136 is greater than or less than the area of half the circumferential surface of the cam 136.

[0160] In the embodiments of the present application, by arranging the avoiding slot 1361 on the cam 136 and the blocking piece 137 cooperating with the avoiding slot 1361, when the cam 136 rotates in one direction, the height of the cutterhead assembly 200 can be raised, and when the cam 136 rotates in the other direction, the height of the cutterhead assembly 200 can be lowered, which is beneficial to the height adjustment of the cutterhead assembly 200.

[0161] In one embodiment, please refer to Figure 12 The limiting part 120 is arranged to abut one end of the cam 136, which is a round head 121, so as to facilitate the contact between the limiting part 120 and the cam 136.

[0162] In an embodiment, one end of the rotating shaft 135 is connected with a driving motor, and the rotating shaft 135 is driven to rotate by the driving motor; or, one end of the rotating shaft 135 is connected with a self-locking knob 134, and the rotating shaft 135 is driven to rotate by manually operating the self-locking knob 134.

[0163] When one end of the rotating shaft 135 is connected with the driving motor, the rotating shaft 135 is driven to rotate when the driving motor is working, and the rotating shaft 135 is not driven to rotate when the driving motor is not working.

[0164] In an example, one end of the rotating shaft 135 is directly connected with the driving motor, or one end of the rotating shaft 135 is connected with the driving motor through a speed reducer or other transmission structure. It is worth mentioning that by connecting one end of the rotating shaft 135 with the driving motor, the automatic control of the height adjustment of the cutterhead assembly 200 can be facilitated.

[0165] When one end of the rotating shaft 135 is provided with the self-locking knob 134, the self-locking knob 134 can be operated as follows: when the knob part 1341 of the self-locking knob 134 is not pressed, the self-locking knob 134 is in a locked state, the knob part 1341 cannot be rotated, and thus the rotating shaft 135 cannot be rotated; when the knob part 1341 of the self-locking knob 134 is pressed downward, the knob part 1341 can be rotated when the knob part 1341 is rotated, and thus the rotating shaft 135 is rotated together. Regarding the self-locking knob 134, a specific example has been given above, and thus no more detailed description is given here.

[0166] It is worth mentioning that in an embodiment described above, the adjusting structure 130 includes the support frame 131, the rotating shaft 135, and the cam 136, and in other alternative embodiments, the adjusting structure 130 includes the support frame 131, a connecting shaft, and a circular table, the connecting shaft is connected with the support frame 131, the circular table is arranged on the connecting shaft, one end of the limiting part 120 abuts on the circumferential outer side of the circular table, the height of the connecting shaft and the circular table is adjusted to change the inclined state of the limiting part 120, and thus the height direction adjustment of the first connecting rod part 111 and the cutterhead assembly 200 is realized.

[0167] Please refer to Figure 15-17 , Figure 15 The structure schematic diagram of the floating lifting mechanism 100 and the cutterhead assembly 200 provided in the embodiments of the present application is shown in Figure 16 The structure schematic diagram of the floating lifting mechanism 100 and the cutterhead assembly 200 provided in the embodiments of the present application is shown in Figure 15 The enlarged view of part C in FIG. 10 is shown in Figure 17 Another structure schematic diagram of the floating lifting mechanism 100 and the cutterhead assembly 200 provided in the embodiments of the present application is shown in

[0168] In an embodiment, please refer to Figure 15The connecting rod structure 110 further comprises elastic devices 190, which are compressed when the first connecting rod part 111 moves upward, so as to achieve a buffering effect.

[0169] In an example, the number of elastic devices 190 is more than one, for example, the number of elastic devices 190 is one or two or three, etc., please refer to Figure 15 , one elastic device 190 is shown, please refer to Figure 17 , two elastic devices 190 are shown, that is, an elastic device 190 can be arranged on each connecting rod structure 110. It is worth noting that the number of elastic devices 190 can reduce the number of parts, and the number of elastic devices 190 can further increase the buffering effect.

[0170] In an example, the elastic device 190 is a spring.

[0171] In an example, one end of the elastic device 190 is connected to the fourth connecting rod part 114, and the other end is connected to the third connecting rod part 113 or the second connecting rod part 112; or, in other examples, one end of the elastic device 190 is connected to the first connecting rod part 111, and the other end is connected to the third connecting rod part 113.

[0172] In an example, when one end of the elastic device 190 is connected to the fourth connecting rod part 114 and the other end is connected to the third connecting rod part 113, please refer to Figure 15 , the end of the elastic device 190 connected to the fourth connecting rod part 114 is close to the first connecting rod part 111, and the end of the elastic device 190 connected to the third connecting rod part 113 is close to the second connecting rod part 112.

[0173] In the embodiment of the application, the elastic device 190 is arranged to achieve a buffering effect when the cutter head assembly 200 hits an obstacle and moves upward, and the specific arrangement position and number of the elastic device 190 are not limited.

[0174] In an embodiment, a hanging protrusion 1132 is arranged on the side of the third connecting rod part 113 facing the fourth connecting rod part 114 and the side of the fourth connecting rod part 114 facing the third connecting rod part 113, and the hooks at both ends of the elastic device 190 can be hung on the hanging protrusions 1132 of the third connecting rod part 113 and the fourth connecting rod part 114, respectively, please refer to Figure 16 , the hanging protrusion 1132 on the third connecting rod part 113 is shown.

[0175] For the hanging protrusion 1132 arranged on the third connecting rod part 113, in an example, please refer to Figure 16The two ends of the hanging protrusion 1132 are connected with the lower side of the third connecting rod part 113, the hanging protrusion 1132 and the lower side of the third connecting rod part 113 form an insertion opening, one end of the elastic device 190 can pass through the insertion opening and hang on the hanging protrusion 1132 of the third connecting rod part 113.

[0176] In an example, for the hanging protrusion 1132 arranged on the third connecting rod part 113, the hanging protrusion 1132 can be integrally formed on the third connecting rod part 113, and for the hanging protrusion 1132 arranged on the fourth connecting rod part 114, the hanging protrusion 1132 can be integrally formed on the fourth connecting rod part 114.

[0177] In the embodiment of the application, by arranging that the two ends of the elastic device 190 are hung on the corresponding two hanging protrusions 1132, the installation and disassembly of the elastic device 190 can be facilitated.

[0178] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A floating lifting mechanism, characterized in that, The application relates to a floating lifting mechanism (100) for a cutting disc assembly (200) of a device, which comprises: a connecting rod structure (110) for connecting the cutting disc assembly (200), wherein the first connecting rod part (111) of the connecting rod structure (110) can drive the cutting disc assembly (200) to move upward when the first connecting rod part (111) is subjected to an upward force; a limiting part (120) connected with the connecting rod structure (110); an adjusting structure (130) matched with the limiting part (120) and used for limiting the height of the first connecting rod part (111), and the height of the first connecting rod part (111) and the cutting disc assembly (200) can be changed by adjusting the adjusting structure (130).

2. The floating lifting mechanism of claim 1, wherein, The connecting rod structure (110) further comprises a second connecting rod part (112), a third connecting rod part (113) and a fourth connecting rod part (114), the first connecting rod part (111) and the second connecting rod part (112) are oppositely arranged, the second connecting rod part (112) is used for being fixed on a device main machine, the third connecting rod part (113) and the fourth connecting rod part (114) are respectively rotationally connected with the first connecting rod part (111) and the second connecting rod part (112), and the limiting part (120) is rotationally connected with the third connecting rod part (113) or the fourth connecting rod part (114).

3. The floating lifting mechanism of claim 2, wherein, The connecting rod structure (110) is at least one, and each connecting rod structure (110) is used for connecting the cutting disc assembly (200) and the device main machine respectively. When the connecting rod structure (110) is multiple, the connecting rod structures (110) are independently arranged. When the connecting rod structure (110) is multiple, the third connecting rod parts (113) of two adjacent connecting rod structures (110) are connected through a first intermediate connecting rod part (140), and / or the fourth connecting rod parts (114) of two adjacent connecting rod structures (110) are connected through a second intermediate connecting rod part (150).

4. The floating lifting mechanism of claim 2, wherein, The third connecting rod part (113) and the fourth connecting rod part (114) are arranged in parallel or cross each other.

5. The floating lifting mechanism of claim 1, wherein, The floating lifting mechanism (100) further comprises elastic devices (190) connected with the connecting rod structure (110), and the elastic devices (190) are compressed when the first connecting rod part (111) moves upward.

6. A floating lifting mechanism according to any one of claims 1-5, characterized in that The adjusting structure (130) comprises a support frame (131) and a lead screw assembly (132), the support frame (131) is used for being fixed on the device main machine, the lead screw (1321) of the lead screw assembly (132) is rotationally connected with the support frame (131), and the limiting part (120) is connected on the sliding block (1322) of the lead screw assembly (132).

7. The floating lifting mechanism of claim 6, wherein, One end of the limiting part (120) is rotationally connected with the connecting rod structure (110), a sliding block connecting frame (1323) is arranged on the sliding block (1322), a sliding groove (13231) is arranged on the sliding block connecting frame (1323), the other end of the limiting part (120) is rotationally connected with the sliding block connecting frame (1323) and the limiting part (120) can move along the sliding groove (13231).

8. The floating lifting mechanism of claim 6, wherein, One end of the lead screw (1321) is connected with a driving motor, or one end of the lead screw (1321) is provided with a self-locking knob (134).

9. The floating lifting mechanism of claim 6, wherein, The lead screw (1321) is arranged between the second connecting rod parts (112) of the two connecting rod structures (110), a guide rail structure is formed between the sliding block (1322) and the second connecting rod part (112), and the guide rail structure is used for guiding the sliding block (1322) to move along the axis direction of the lead screw (1321) when the lead screw (1321) rotates.

10. The floating lifting mechanism of any one of claims 1-5, wherein, The adjusting structure (130) comprises a support frame (131), a rotating shaft (135) and a cam (136), the support frame (131) is used for being fixed on a device host, the rotating shaft (135) is rotationally connected with the support frame (131), the cam (136) is arranged on the rotating shaft (135), and one end of the limiting part (120) abuts on the circumferential surface of the cam (136).

11. The floating lifting mechanism of claim 10, wherein, The end of the limiting part (120) for abutting on the cam (136) is a round head (121); and / or, One end of the rotating shaft (135) is connected with a driving motor or one end of the rotating shaft (135) is provided with a self-locking knob (134).

12. A lawnmower characterised in that, The floating lifting mechanism (100) is connected with the cutterhead assembly (200) and the device host.

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