Lawn mower and header lifting device

Abstract

The utility model relates to a mower and a header lifting device. The mower comprises a frame, a seat, a header and the header lifting device. The header lifting device comprises a control part, a translation mechanism, a linkage mechanism, a gear part and a centering part, the gear part comprises a sliding way and gear grooves, the control part penetrates through the sliding way, the gear grooves are located in the two sides of the sliding way, and the control part is provided with a first position matched with the centering part; and the distances between the control piece at the first position and the gear grooves at the two sides are equal. The header lifting device is provided with the centering part, the gear grooves are formed in the two sides of the gear part, and when the control part directly pulled by a user is matched with the centering part, the distances between the control part and the gear grooves in the two sides are equal. That is to say, a user or an assembler of the mower can clearly know that the control piece is not close to the gear groove on any side when the control piece is matched with the centering part.

Description

[TECHNICAL FIELD]

[0001] The utility model relates to garden operation vehicle technical field, especially a mower and cutting platform lifting device. [BACKGROUND]

[0002] Outdoor garden operation vehicle generally refers to the vehicle that carries out garden operation outdoors, mainly including the vehicle that carries out cutting maintenance to the lawn of the garden.

[0003] The mower is one of the garden operation vehicles that develop rapidly in recent years, which is provided with a liftable cutting platform, and the cutting platform is provided with a cutter for cutting and maintaining the grass on the ground. Due to the difference of personal preference, season and the like of the user, it is necessary to set multiple mowing height stops on the mower; the common mower can only set 5-7 cutter height stops, which leads to the fact that the stop setting of the existing mower cannot meet the demand of the user when the height adjustment demand is higher.

[0004] Therefore, it is necessary to provide a mower and cutting platform lifting device to overcome the defects in the prior art. [SUMMARY]

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a mower and cutting platform lifting device that can meet the higher height adjustment demand of the user.

[0006] The technical scheme adopted by the utility model to solve the problems in the prior art is: a cutting platform lifting device connected with the frame of a mower and a cutting platform, comprising:

[0007] A control member;

[0008] A translation mechanism connected with the cutting platform and the frame, used to limit the cutting platform to keep the same angle with the frame when moving;

[0009] A linkage mechanism connected with the control member and the translation mechanism, the control member drives the cutting platform to move upward or downward when pulled by the user;

[0010] A stop member connected with the frame, the stop member comprises a slide way through which the control member passes and stop grooves located on both sides of the slide way, and the control member cannot drive the cutting platform to move when matched with the stop grooves;

[0011] A centering part, the control member has a first position matched with the centering part, and the distance between the control member at the first position and the stop grooves on both sides is equal.

[0012] The further improved scheme is that the linkage mechanism comprises:

[0013] A second rotation shaft, the control member moves to the direction of one of the stop grooves when moving around the second rotation shaft;

[0014] An elastic member is connected to the operating member, and when the operating member is closer to one side of the gear slot, the elastic member drives the operating member to move towards the side of the gear slot.

[0015] Further improvement is that when the operating member is in the first position, the elastic member does not generate force to the operating member towards one side of the gear slot.

[0016] Further improvement is that the cutting platform moves upward or downward when the operating member moves along the sliding channel of the gear member, and the cutting platform is at the highest point of the upward or downward movement when the operating member is matched with the centering part.

[0017] Further improvement is that the operating member is at least partially in a cylindrical structure, and the centering part is configured as a centering slot which is opened in the gear member and can be matched with the cylindrical structure of the operating member.

[0018] Further improvement is that at least a part of the operating member in the first position and the second rotating shaft are in the same straight line on the ground.

[0019] Further improvement is that the centering part is configured as a positioning block which is detachably connected to the gear member, the positioning block cannot move along the movement direction of the operating member when matched with the gear member, and the positioning block is provided with the centering slot matched with the operating member.

[0020] Further improvement is that the cutting platform moves downward when the operating member moves in the first direction, and the operating member cannot move in the first direction when matched with the centering part.

[0021] The utility model discloses a mower, which comprises:

[0022] A frame;

[0023] A cutting platform arranged on the lower side of the frame and used for mowing grass;

[0024] A battery pack arranged on the frame and used for supplying power to the cutting platform;

[0025] A cutting platform lifting device, which comprises:

[0026] An operating member;

[0027] A translation mechanism connected between the cutting platform and the frame and used for keeping the angle between the cutting platform and the frame unchanged when the cutting platform moves;

[0028] A linkage mechanism connected between the operating member and the translation mechanism, and when the operating member is pulled by a user, the linkage mechanism drives the cutting platform to move upward or downward;

[0029] Gear connected to the frame, the gear contains a sliding through the operating member and located on both sides of the gear slot;

[0030] The operating member has a first position when cooperating with the centering part, and the distance between the operating member and the gear slots on both sides is equal.

[0031] Further improvement is that the mower also includes a seat configured on the frame, and the operating member is located on the left and / or right side of the seat.

[0032] Compared with the prior art, the mower has the following beneficial effects:

[0033] The cutting platform lifting device in the utility model is provided with a centering part, and both sides of the gear are provided with gear slots, and when the operating member directly pulled by the user cooperates with the centering part, the distance between the operating member and the gear slots on both sides is equal.

[0034] The cutting platform lifting device in the utility model is provided with a centering part, and both sides of the gear are provided with gear slots, and when the operating member directly pulled by the user cooperates with the centering part, the distance between the operating member and the gear slots on both sides is equal. [DETAILED DESCRIPTION]

[0035] The specific embodiments of the utility model will be further described in detail in combination with the drawings:

[0036] Figure 1 It is a perspective view of the mower of the utility model;

[0037] Figure 2 It is Figure 1 It is a perspective view of the middle frame and the cutting platform lifting device;

[0038] Figure 3 It is Figure 2 It is a top view of the structure shown;

[0039] Figure 4 It is Figure 2 It is a perspective view of another view of the structure shown;

[0040] Figure 5 It is Figure 2 It is a partial structure diagram of the cutting platform lifting device shown;

[0041] Figure 6 、 Figure 7 is a schematic view of a height-adjusting shaft end plate and a control part structure;

[0042] Figure 8 is a schematic view of a structure of a single-side limiting block in the utility model;

[0043] Figure 9 is a schematic view of an embodiment of the single-side limiting block assembled to the height-adjusting shaft end plate in the utility model;

[0044] Figure 10 is a schematic view of a structure of a double-side limiting block in the utility model

[0045] Figure 11 is a schematic view of an embodiment of the double-side limiting block assembled to the height-adjusting shaft end plate in the utility model;

[0046] Figure 12 is a schematic view of an embodiment of the single-side limiting block assembled to the control part in the utility model;

[0047] Figure 13 is a schematic view of an embodiment of the double-side limiting block assembled to the control part in the utility model;

[0048] Figure 14 is a schematic view of an embodiment of the two single-side limiting blocks used in cooperation in the utility model;

[0049] Figure 15 、 16 is a schematic view of another embodiment of the two limiting blocks used in cooperation in the utility model;

[0050] Figure 17 、 18 is a schematic view of another embodiment of the two limiting blocks used in cooperation in the utility model;

[0051] Figure 19 、 20 is a schematic view of an embodiment of the two limiting rings used in cooperation in the utility model;

[0052] Figure 21 、 22 is Figure 20 a schematic view of the structure in different states;

[0053] Figure 23 is a schematic view of a structure of another embodiment of the limiting part;

[0054] Figure 24 、 25 is a schematic view of a structure of another embodiment of the limiting part;

[0055] Figure 26 is a schematic view of a structure of another embodiment of the limiting part;

[0056] Figure 27 is a schematic view of one embodiment of the elastic member selected as a tension spring;

[0057] Figure 28 is a schematic view of another embodiment of the elastic member selected as a tension spring;

[0058] Figure 29 is a schematic view of the structure shown in another state; Figure 28

[0059] Figure 30 is a side view of the structure shown in another state; Figure 29

[0060] Figure 31 is a partial schematic view of the structure shown in another state with a trajectory line of the upper connection point; Figure 28

[0061] Figure 32 is a schematic view of a part of the structure of the header lifting device with a gear member;

[0062] Figure 33 is a schematic view of the structure of the gear member;

[0063] Figure 34 is a schematic view of the structure shown in another state; Figure 2

[0064] Figure 35 is a schematic view of a part of the structure of the header lifting device in another embodiment;

[0065] Figure 36 Figure 35 is a schematic view of a part of the structure of the header lifting device shown in another state;

[0066] Figure 37 is a schematic view of a part of the structure of the header lifting device shown in another state;

[0067] Figure 38 Figure 37 is a partial enlarged schematic view of the structure shown in another state;

[0068] Figure 39 is a schematic view of a part of the structure of the header lifting device shown in another state;

[0069] Figure 40 is a schematic view of a part of the structure of the header lifting device shown in another state;

[0070] Figure 41 is a schematic view of a part of the structure of the header lifting device shown in another state; 42

[0071] Figure 43 is a schematic view of a part of the structure of the header lifting device shown in another state;​​​​​​​

[0072] Meaning of reference numerals in the drawings:

[0073] 1, frame; 2, seat; 3, mowing deck; 4, first rotating shaft; 5, height adjustment swing arm; 6, pull rod; 7, rear hitch plate; 8, front hitch; 9, height adjustment shaft end plate; 10, gear; 101, slide; 102, gear slot; 103, centering slot; 1031, positioning block; 104, hook; 11, operating member; 12, elastic member; 121, tension spring; 122, compression spring; 13, limiting member; 131, limiting block; 1311, single-side limiting block; 1312, double-side limiting block; 1313, concave limiting block; 132, limiting ring; 1321, convex limiting ring; 1322, concave limiting ring; 14, clamping plate; 141, groove; 15, spring slot; 16, quick pull locking member; 161, lock housing; 162, ratchet; 1621, transition surface; 1622, abutting surface; 163, lock core; 164, pawl; 1641, pawl head surface; 1642, pawl side surface; 165, reset member. [DETAILED DESCRIPTION]

[0074] The terms used in the present application are merely for the purpose of describing specific embodiments, and are not intended to limit the present application. For example, the words "upper", "lower", "front", "back", and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the device to a specific orientation or as indicating or implying that the device must be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0075] Unless otherwise specified, the terms "provided", "connected", and "connected" in the specification should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. The "fixed connection" in the specification should also be broadly understood as integrally formed or welded or connected through other fasteners.

[0076] Further, the term "curved surface" in the specification should be broadly understood, for example, as a plane or curved surface arranged obliquely. It should not be limitedly understood as a curved surface with varying curvature (or slope).

[0077] Please refer to Figure 1 , which shows a mower disclosed in the present application, comprising a frame 1 and a support platform provided on the frame 1 and used for supporting a user, a mowing deck 3 provided on the lower side of the frame 1, and a mowing deck lifting device connecting the frame 1 and the mowing deck 3.

[0078] The mowing deck lifting device comprises an operating member 11 for a user to hold and pull, a translation mechanism, a linkage mechanism, and a gear 10.

[0079] The translation mechanism connects the header 3 and the frame 1, and is used to define the angle between the header 3 and the frame 1 to be constant when the header 3 moves. Specifically, referring to the drawings, Figures 1 to 4 The translation mechanism includes a front hanging piece 8 and a rear hanging piece, both ends of which are hinged to the frame 1 and the header 3. The rear hanging piece is composed of rear hanging plates 7 located on both sides of the frame 1. The front hanging piece 8, the frame 1, the rear hanging piece, and the header 3 form a parallelogram structure, so that the angle between the header 3 and the frame 1 is kept constant when the header 3 moves.

[0080] The operating member 11 rotates around the first rotating shaft 4 arranged on the frame 1. The linkage mechanism connects the operating member 11 and the translation mechanism (in other embodiments, the linkage mechanism can also connect the operating member 11 and the header 3, which has no substantial difference and will not be described here). When the operating member 11 is pulled by the user, it drives the header 3 to move upward or downward.

[0081] The gear member 10 includes a gear slot 102 and is connected to the frame 1. When the operating member 11 is engaged in the gear slot 102, it cannot drive the header 3 to move, which is used to limit the header 3 to a certain position, so as to keep the stable mowing height when the mower operates.

[0082] The linkage mechanism further includes a height adjustment shaft end plate 9 and a second rotating shaft. The height adjustment shaft end plate 9 connects the operating member 11 and the first rotating shaft 4, and the operating member 11 rotates around the first rotating shaft 4 synchronously with the height adjustment shaft end plate 9. The second rotating shaft connects the operating member 11 and the height adjustment shaft end plate 9. The operating member 11 can rotate around the second rotating shaft and slide along the axial direction of the second rotating shaft relative to the height adjustment shaft end plate 9. The positions of the operating member 11 rotating around the second rotating shaft include the engaged state position engaged with the gear slot 102 and the disengaged state position disengaged from the gear slot 102.

[0083] Further, referring to the drawings, Figure 6 , Figure 7 The linkage mechanism further includes a limiting member 13 and a resilient member 12. The limiting member 13 is connected to the operating member 11 and / or the height adjustment shaft end plate 9, and a curved surface is arranged on the limiting member 13. The resilient member 12 connects the operating member 11 and the height adjustment shaft end plate 9. The elastic force of the resilient member 12 makes the operating member 11 slide along the second rotating shaft and abut against the limiting member 13. The curved surface of the limiting member 13 abuts against the operating member 11 and generates a deflection force to make the operating member 11 deflect to the engaged state. That is, the elastic force of the resilient member 12 when the operating member 11 is in the engaged state is smaller than the elastic force when the operating member 11 is in the disengaged state.

[0084] The operating member 11 and / or the height adjustment shaft end plate 9 is provided with a threaded hole, the limiting member 13 is provided with a mounting hole, and the limiting member 13 is matched with the threaded hole of the operating member 11 and / or the height adjustment shaft end plate 9 through a bolt penetrating the mounting hole, so as to complete the fixed installation of the limiting member 13. In order to save the space of the limiting member, an internal thread is arranged in the threaded hole, and the bolt is threadedly connected with the threaded hole to realize the connection of the two; in other connection modes, the fixing can also be realized through the bolt-nut cooperation, or welding, one-piece forming or other modes.

[0085] Referring to the accompanying drawings Figure 4 , Figure 5 The linkage mechanism in the embodiment comprises a pull rod 6; both ends of the pull rod 6 are rotationally connected to the height adjustment shaft end plate 9 and the translation mechanism; when the user pulls the operating member 11 to rotate it around the first rotation shaft 4, the height adjustment shaft end plate 9 rotates around the first rotation shaft 4 and pulls the pull rod 6 to move, so as to change the height of the header 3.

[0086] Further, referring again to the accompanying drawings Figure 4 , Figure 5 The linkage mechanism further comprises a height adjustment swing arm 5 connected to the first rotation shaft 4, and the pull rod 6 is rotationally connected to the height adjustment swing arm 5; the height adjustment swing arm 5 rotates synchronously when the first rotation shaft 4 rotates, and the height adjustment swing arm 5 can be arranged at a fixed angle with the height adjustment shaft end plate 9; in the prior art, the operating member 11 is arranged on the lower right side of the support platform (the support platform in the drawings is a seat 2 for the user to sit on), and the user needs to bend over to hold and operate the operating member 11; and a relatively large force is required to pull the operating member 11, so that the prior art scheme of arranging the operating member 11 on the lower right side consumes a large amount of waist strength of the user, and may cause waist muscle injury; the height adjustment swing arm 5 is additionally arranged in the embodiment, so that the operating member 11 is not arranged on the lower side; at this time, the user can operate the operating member 11 without bending over, and the operation method is more humanized.

[0087] The force along the direction of the first rotation shaft 4 that the operating member 11 needs to overcome to move from the blocking state to the disengaging state is 3N-30N; the force is not limited to the size of the pulling force of the operating member 11, but the component force of the pulling force along the direction of the first rotation shaft 4 is 3N-30N; if the pulling force is parallel to the first rotation shaft 4, the above component force is equal to the pulling force; generally, 10N is preferred, and the force range is relatively reasonable, and the operation is more comfortable.

[0088] One end of the operating member 11 is bent to form a second rotation shaft, and both ends of the elastic member 12 are connected to the second rotation shaft and the height adjustment shaft end plate 9 to generate an elastic force for driving the operating member 11 to move towards the limiting member 13.

[0089] The height adjustment shaft end plate 9 comprises a baffle plate perpendicular to the second rotation shaft, the second rotation shaft penetrates the baffle plate, and the elastic member 12 is sleeved on the second rotation shaft, and both ends of the elastic member 12 are connected to the baffle plate and the second rotation shaft, respectively.

[0090] Reference Appendix Figure 8 , Figure 9 These are schematic diagrams of the limiting member 13 in the first embodiment and the cooperation state of the limiting member 13 and the operating member 11, respectively. In this embodiment, the limiting member 13 is fixed to the height adjustment shaft end plate 9; as shown... Figure 8 As shown, the limiting member 13 is a single-sided limiting block 1311. The end of the single-sided limiting block 1311 near the operating member 11 has a curved surface along the rotation direction around the second rotating axis. The curved surface has a height difference in the axial direction of the second rotating axis. The part of the curved surface near the operating member 11 is considered as a protrusion, and the part away from it is considered as a depression. In this embodiment, the elastic member 12 is a compression spring 122. The elastic force applied by the compression spring 122 to the operating member 11 causes it to abut against the single-sided limiting block 1311, and the abutment position is located at the curved surface of the single-sided limiting block 1311. The abutment force of the curved surface on the operating member 11 has a component force pointing towards the depression. Therefore, it can have the tendency to move the operating member 11 around the second rotating axis away from the protrusion until the operating member 11 moves to cooperate with the stop groove 102 and is in the stop state.

[0091] Furthermore, the stop member 10 includes a slide 101 and stop grooves 102 are provided on both sides of the slide 101. When the operating member 11 rotates around the first rotating shaft 4, it slides in the slide 101. When the operating member 11 rotates around the second rotating shaft to either side, it enters the stop groove 102 on the corresponding side. That is, the limiting member 13 can make the operating member 11 generate abutting pressure in different directions under different conditions, so that the operating member 11 has the tendency to deflect into the stop groove 102 in different directions when in different positions.

[0092] For details, please refer to the appendix. Figure 10 , Figure 11 The figures show schematic diagrams of the limiting member 13 and the cooperation state between the limiting member 13 and the operating member 11 in the second embodiment. In this embodiment, the limiting member 13 is a double-sided limiting block 1312 fixed to the height adjustment shaft end plate 9. The end of the double-sided limiting block 1312 near the operating member 11 has two curved surfaces along the rotation direction around the second rotating axis, and the two curved surfaces are smoothly transitioned. Similarly, the part of the curved surface near the operating member 11 is considered as a protrusion, and the part away is considered as a depression. In this embodiment, the middle part where the two curved surfaces are close to each other is a protrusion. The two sides are concave; in this embodiment, the elastic element 12 is also a compression spring 122. The spring 122 applies a spring force to the operating element 11, causing it to abut against the double-sided limiting block 1312. The abutting position is located on the curved surface of either side of the double-sided limiting block 1312. The abutting force of the double-sided limiting block 1312 on the operating element 11 has a lateral component force. Therefore, it can have the tendency to move the operating element 11 around the second rotating axis to move away from the central protrusion until the operating element 11 moves to cooperate with the stop groove 102 and is in the stop state.

[0093] Reference Appendix Figure 8、 Figure 12 , respectively, the third embodiment of the limit member 13 schematic diagram and limit member 13 and the height adjustment shaft end plate 9 cooperation state schematic diagram, the limit member 13 of the embodiment is selected to be fixed to the single-side limit block 1311 of the operating member 11, the single-side limit block 1311 is close to the end of the operating member 11 along the rotation direction around the second rotation shaft and has a curved surface, the curved surface has a height difference in the axial direction of the second rotation shaft, the part close to the height adjustment shaft end plate 9 of the curved surface is regarded as convex, and the part far away is regarded as concave; and the height adjustment shaft end plate 9 close to the side of the limit block 131 is provided with a convex block; the elastic member 12 in the embodiment is a compression spring 122, the elastic force of the compression spring 122 applied to the operating member 11 makes the single-side limit block 1311 abut against the convex block, and the abutting position is located at the curved surface of the single-side limit block 1311, the abutting force of the curved surface to the convex block has a component force pointing to the concave part, the convex block has a force to make the operating member 11 move around the second rotation shaft away from the convex block under the action of the reaction force, until the operating member 11 moves to the engaged state in the gear slot 102.

[0094] Reference is made to the accompanying drawings Figure 10 , Figure 13 , respectively, the fourth embodiment of the limit member 13 schematic diagram and limit member 13 and the height adjustment shaft end plate 9 cooperation state schematic diagram, the limit member 13 of the embodiment is selected to be fixed to the double-side limit block 1312 of the height adjustment shaft end plate 9, the double-side limit block 1312 is close to the end of the height adjustment shaft end plate 9 along the rotation direction around the second rotation shaft and has two curved surfaces, and the two curved surfaces are smoothly connected; similarly, the part close to the height adjustment shaft end plate 9 of the curved surface is regarded as convex, and the part far away is regarded as concave; the middle part of the two curved surfaces close to each other in the embodiment is convex, and the two sides are concave; and the height adjustment shaft end plate 9 close to the side of the limit block 131 is provided with a convex block; the elastic member 12 in the embodiment is a compression spring 122, the elastic force of the compression spring 122 applied to the operating member 11 makes the double-side limit block 1312 abut against the convex block, and the abutting position is located at the curved surface of the double-side limit block 1312, the abutting force of the curved surface to the convex block has a component force pointing to the concave part, the convex block has a force to make the operating member 11 move around the second rotation shaft away from the convex block under the action of the reaction force, until the operating member 11 moves to the engaged state in the gear slot 102.

[0095] The first and second embodiments described above are that the limit member 13 directly abuts against the operating member 11, but the operating member 11 is a rod-shaped structure, and the abutting effect of the operating member 11 and the limit member 13 is similar to the abutting of the convex block and the limit member 13 in the third and fourth embodiments.

[0096] In the foregoing embodiments, the limit member 13 is arranged at the operating member 11 or the height adjustment shaft end plate 9 and generates the abutting effect, in other embodiments, another limit member 13 can be additionally arranged at the operating member 11, when the curved surfaces of the two limit members 13 abut against each other, a force to make the operating member 11 deflect can be generated to make the operating member 11 move to the engaged state. The specific implementation is as follows:

[0097] Reference to the accompanying drawings Figure 8 , Figure 14 , Figure 14 Figure 6 is a schematic diagram of the connection state of the limiting piece 13 and the height adjustment shaft end plate 9 and the operating piece 11 of the fifth embodiment, which includes two single-sided limiting blocks 1311 and is fixed to the height adjustment shaft end plate 9 and the operating piece 11, respectively, and the end with a curved surface of the two single-sided limiting blocks 1311 abuts; the elastic piece 12 in this embodiment is a compression spring 122, and the elastic force exerted by the compression spring 122 on the operating piece 11 makes the two single-sided limiting blocks 1311 abut at the curved surface of the single-sided limiting block 1311, and the abutting force of the curved surface of the single-sided limiting block 1311 on the other single-sided limiting block 1311 has a component perpendicular to the second rotation shaft, so that the operating piece 11 is deflected until it cooperates with the blocking groove 102 and is in the blocking state.

[0098] Reference to the accompanying drawings Figure 15 , Figure 16 , Figure 15 Figure 7 is a schematic diagram of the structure of the limiting piece 13 of the sixth embodiment, Figure 16 Figure 7 is a schematic diagram of the connection state of the limiting piece 13 and the height adjustment shaft end plate 9 and the operating piece 11 of the sixth embodiment, which includes two kinds of limiting blocks 131, one of which is a convex limiting block provided with a protrusion (refer to the double-sided limiting block 1312 in the accompanying drawings), and the other is a concave limiting block 1313 provided with a recess, the protrusion of the convex limiting block and the recess of the concave limiting block 1313 can cooperate with each other, and the protrusion of the convex limiting block includes two curved surfaces on both sides and a vertex in the middle, and the recess of the concave limiting block 1313 includes two curved surfaces on both sides and a concave point in the middle, and the curved surface of the convex limiting block and the concave surface of the concave limiting block 1313 abut to generate a component force that deflects the operating piece 11, which drives the operating piece 11 to deflect to cooperate with the blocking groove 102 and be in the blocking state, this embodiment can generate a component force that deflects on both sides, when the curved surface of the convex limiting block and the corresponding curved surface of the concave limiting block 1313 abut, a force that deflects the operating piece 11 in one direction is generated; when the other curved surface of the convex limiting block and the corresponding curved surface of the concave limiting block 1313 abut, a force that deflects the operating piece 11 in the other direction is generated, so that when the operating piece 11 is closer to a blocking groove 102 on one side, the abutting force generated by the limiting block 131 drives the operating piece 11 to enter the blocking groove 102 on the corresponding side.

[0099] Reference to the accompanying drawings Figure 17 , Figure 18 , Figure 17Fig. 8 is a schematic view of the limit piece 13 of the eighth embodiment and the cooperation state between the limit piece 13 and the operating piece 11. In the eighth embodiment, the limit piece 13 is a limit ring 132 with a ring structure. Two protrusions are symmetrically arranged on the limit ring 132. The two protrusions on the single limit ring 132 in the figure are symmetrically arranged vertically. The operating piece 11 is in the disengaged state when the protrusions of the two limit rings 132 abut against each other. At this time, the elastic force of the elastic member 12 causes the abutting force of the two limit rings 132 in the transverse direction, so that the operating piece 11 has a tendency to move and deviate in the transverse direction to the engaged state. It is particularly pointed out that, referring to Fig. 9, the limit ring 132 is in the engaged state when the protrusions of the two limit rings 132 abut against each other. Although there is no transverse force at this time, this state is obviously unstable. If the user slightly applies a transverse force or the vehicle slightly vibrates, the operating piece 11 will be displaced to the state shown in Fig. 8 or Fig. 9, and then the operating piece 11 will be deflected into the corresponding side of the gear slot 102. Further, more than two protrusions can be symmetrically arranged on the single limit ring 132, and the same technical effect can be achieved. The specific scheme is similar and will not be described here.

[0100] In addition, the limit piece 13 in each of the above embodiments only plays a single-point abutting role at the same time. In other embodiments, the limit piece 13 can be selected to have a ring structure, and protrusions and / or recesses are symmetrically arranged on the surface of the limit piece 13 to generate an abutting effect. The specific scheme is as follows:

[0101] Reference is made to Fig. 10. Figures 19 to 22 Fig. 11 is a schematic view of the limit piece 13 of the eighth embodiment and the cooperation state between the limit piece 13 and the operating piece 11. In the eighth embodiment, the limit piece 13 is a limit ring 132 with a ring structure. Two protrusions are symmetrically arranged on the limit ring 132. The two protrusions on the single limit ring 132 in the figure are symmetrically arranged vertically. The operating piece 11 is in the disengaged state when the protrusions of the two limit rings 132 abut against each other. At this time, the elastic force of the elastic member 12 causes the abutting force of the two limit rings 132 in the transverse direction, so that the operating piece 11 has a tendency to move and deviate in the transverse direction to the engaged state. It is particularly pointed out that, referring to Fig. 9, the limit ring 132 is in the engaged state when the protrusions of the two limit rings 132 abut against each other. Although there is no transverse force at this time, this state is obviously unstable. If the user slightly applies a transverse force or the vehicle slightly vibrates, the operating piece 11 will be displaced to the state shown in Fig. 8 or Fig. 9, and then the operating piece 11 will be deflected into the corresponding side of the gear slot 102. Further, more than two protrusions can be symmetrically arranged on the single limit ring 132, and the same technical effect can be achieved. The specific scheme is similar and will not be described here. Figure 20 In this state, the protrusion tips of the two limit pieces 13 abut against each other. Although there is no transverse force at this time, this state is obviously unstable. If the user slightly applies a transverse force or the vehicle slightly vibrates, the operating piece 11 will be displaced to the state shown in Fig. 8 or Fig. 9, and then the operating piece 11 will be deflected into the corresponding side of the gear slot 102. Figure 21 Or Figure 22 the state shown in Fig. 8 or Fig. 9. At this time, the operating piece 11 is deflected into the corresponding side of the gear slot 102. Further, more than two protrusions can be symmetrically arranged on the single limit ring 132, and the same technical effect can be achieved. The specific scheme is similar and will not be described here.

[0102] Reference is made to Fig. 10. Figure 23In another embodiment of the present invention, the figure shows annular and mutually cooperating limiting rings 132. One limiting ring 132 is located on the height adjustment shaft end plate 9, and the other limiting ring 132 is located on the operating member 11. One of them is a convex limiting ring 1321 with a protrusion, and the other is a concave limiting ring 1322 with a recess. When the protrusion and the recess of the two limiting rings 132 are engaged, the operating member 11 is in the engaged state, and otherwise in the disengaged state.

[0103] Reference Appendix Figure 24 , Figure 25 In another embodiment of the present invention, the figure shows two interlocking ring-shaped limiting rings 132. The two limiting rings 132 are located on the height adjustment shaft end plate 9 and the operating member 11, respectively. One limiting ring 132 has a protrusion, and the other limiting ring 132 has a recess, but it differs from the attached... Figure 23 In the embodiment shown, the convex limiting ring has a protrusion on both the upper and lower sides, and the concave limiting ring has two recesses on both the upper and lower sides. This embodiment is applicable to the technical solution of providing a stop groove 102 on both the left and right sides of the aforementioned stop member 10. When the protrusion of the convex limiting ring engages with any one of the recesses, the operating member 11 is in the stop position. When the protrusion of the convex limiting ring abuts against the area between the two recesses of the concave limiting ring, the operating member 11 is in the disengaged state.

[0104] Reference Appendix Figure 26 In another embodiment of the present invention, the figures show two interlocking ring-shaped limiting rings 132. The two limiting rings 132 are located on the height adjustment shaft end plate 9 and the operating member 11, respectively. One limiting ring 132 has a protrusion, and the other limiting ring 132 has a recess, but this differs from the attached... Figure 23 , Figure 24 , Figure 25 In the embodiment shown, the limiting ring 132 has more protrusions and recesses, and the number of recesses on one side is one more than the number of protrusions at the corresponding position. At this time, the two limiting rings 132 have two stable states that cooperate with each other. The corresponding technical solution of setting two rows of left and right stop grooves 102 for the stop member 10 is used. When the two limiting rings 132 are in the state between the two stable states, the operating member 11 is in the disengaged state.

[0105] Additionally, it should be noted that the aforementioned Figure 8 , Figure 9 , Figure 12 , Figure 14 , Figure 15 , Figure 16 , Figure 23 In the illustrated embodiment, the extreme deflection position of the control member 11 remains abutting against the curved surface of the limiting member 13, and only one of the two extreme positions of the control member 11 rotating around the second axis is in a stable state, which corresponds to the control member 11 being in the blocking state. The aforementioned...Figure 11 , Figure 13 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 , Figure 24 , Figure 25 , Figure 26 In the illustrated embodiment, the two extreme positions of the operating member 11 rotating around the second axis are both in a stable state. This is suitable when the operating member 11 is in the blocking state at both extreme positions. However, it should be noted that the technical solution of the limiting member 13 achieving two stable states is not entirely unapplicable to the single-sided blocking groove 102 solution. It is only necessary to limit the maximum rotation position of the operating member 11 through an external structure to prevent it from rotating out of the blocking position. Figure 21 Exercise to Figure 22 As shown, the specific external structure only needs to set a blocking structure on the height adjustment axle end plate 9, the stop piece 10, or the frame 1 to block the operation piece 11, which will not be elaborated here.

[0106] Furthermore, a specific scheme for ensuring the operating member 11 is in a engaged state when located on both sides is as follows: A stop groove 102 is provided on both sides of the stop member 10, meaning that the operating member 11 is in a engaged state when rotated around the second pivot to either side, and in a disengaged state when located in the middle. Alternatively, protrusions and recesses can be provided on both limiting members 13; the specific scheme is not significantly different from the aforementioned scheme and will not be elaborated further, nor should it be construed as exceeding the scope of protection of this application.

[0107] The aforementioned compression spring 122 is installed with one end fixedly connected to the second rotating shaft and the other end abutting against the baffle of the height adjustment shaft end plate 9. Its installation method and position only need to satisfy the requirement that the second rotating shaft can slide relative to the height adjustment shaft end plate along the axial direction of the second rotating shaft; that is, the compression spring 122 is not sleeved on the second rotating shaft, but is set on one side of it, or even set at an angle, all of which should fall within the protection scope claimed by this patent.

[0108] Unlike the aforementioned embodiments, refer to the appendix. Figures 27 to 31 The elastic element 12 is a tension spring 121 with the control element 11 and the height adjustment shaft end plate 9 connected at both ends respectively. The elastic element 12 generates an oblique pulling force on the control element 11, causing the control element 11 to move to one side. The elastic force of the elastic element 12 when the control element 11 is in the gear state is less than the elastic force of the control element 11 when it is in the disengaged state.

[0109] In one embodiment of the present invention, the stop member 10 is provided with a stop groove 102 on only one side, so that fixing the lower part of the tension spring 121 can generate an oblique pulling force on the operating member 11. (Refer to the attached drawing.) Figure 27At this time, it should be noted that the lower engagement point of the tension spring 121 (the end of the tension spring 121 near the second rotating shaft) is fixed above the second rotating shaft. From the top view, the lower engagement point is closer to the in-gear position of the control member 11, which can ensure that when the control member 11 is in the disengaged state, it can receive the oblique pulling force of the tension spring 121, thereby causing the control member 11 to move towards the in-gear position.

[0110] Reference Appendix Figures 28 to 31 As mentioned above, in order to enable the operating member 11 to be in a stopped state when moving to either side, a stop groove 102 is provided on both sides of the stop member 10, that is, when the operating member 11 rotates around the second rotating shaft to either side, it is in a stopped state; a spring groove 15 perpendicular to the second rotating shaft is provided on the height adjustment shaft end plate 9, and the elastic member 12 is a tension spring 121 with one end sliding in the spring groove 15; when the operating member 11 enters the stop groove 102 on either side, the end of the tension spring 121 slides to the corresponding side of the spring groove 15; when the tension spring 121 slides to the middle of the spring groove 15, the operating member 11 is in a stopped state. The high-shaft end plates 9 are collinear, and the tension spring 121 has the maximum tension. When the operating member 11 deflects to either side, the tension spring 121 begins to contract, and the end of the tension spring 121 located in the spring groove 15 slides along the groove to the same side until it reaches the end of the groove. At this time, the operating member 11 also completely enters the corresponding stop groove 102 under the action of the tension spring 121. Conversely, when the user holds the operating member 11 to disengage it from the stop groove 102, the movement state of the tension spring 121 is the opposite of the above, and will not be described again. When the user releases the operating member 11, the operating member 11 will automatically enter the stop groove 102 on one side. (See attached image) Figure 31 Example description, with appendix Figure 31 For the appendix Figure 28 The enlarged schematic diagram shows that the connection point between the tension spring 121 and the operating member 11 is the upper connection point, and the connection point between the tension spring 121 and the height adjustment shaft end plate 9 is the lower connection point. The spring groove 15 is located on the upper side of the second rotating shaft, meaning the lower connection point is located on the upper side of the second rotating shaft. The arc a in the diagram is the trajectory line of the upper connection point during the entire rotation stroke of the operating member 11. This trajectory line is an arc with the second rotating shaft as the center. The upper wall of the spring groove 15 is the trajectory line of the lower connection point. Analysis shows that only when the lower connection point is directly above the second rotating shaft is the upper connection point, the lower connection point, and the second rotating shaft coplanar. At this time, the tension of the tension spring 121 is the largest, thus ensuring that when the operating member 11 is deflected to one side, the lower connection of the tension spring 121 can slide to the same side edge of the spring groove 15. At this time, the deformation of the tension spring 121 is the smallest.

[0111] In one embodiment of this specification, the cutting platform lifting device further includes a buffer connecting the frame 1 and the linkage assembly to reduce the pulling force required by the user to pull the control element 11 to raise the cutting platform 3. The buffer includes a tension spring with both ends connected to the frame 1 and the height adjustment axle end plate 9, or a torsion spring with both ends connected to the frame 1 and the first rotating shaft 4; the tension spring or torsion spring here can reduce the burden on the user to pull the control element 11 and improve user comfort.

[0112] As previously stated, the shifting component 10 in this specification has shifting grooves 102 on both sides. Furthermore, a slide rail 101 is provided between the shifting grooves 102 on both sides. The operating component 11 passes through the slide rail 101 and can move along the slide rail 101 to either shifting groove 102. At least one shifting groove 102 is not at the same height as any shifting groove 102 on the other side of the slide rail 101. Since the size of a single shifting component 10 and the total stroke of the operating component 11 are limited, providing shifting grooves 102 on both sides can significantly increase the number of shifting grooves 102, thereby increasing the total number of shifting heights of the lawnmower, i.e., providing more mowing heights for users to choose from, thus catering to the needs of more users.

[0113] Reference Appendix Figure 23 , Figure 24 The direction of movement of the control member 11 when the cutting table 3 rises is defined as the upper direction. The side wall of the stop groove 102 in the upper direction is inclined in the direction of the extension from the stop groove 102 to the slide 101. When the user pulls the control member 11 in the upper direction, the control member 11 abuts against the side wall of the stop groove 102. The direction of the side wall allows the side wall to guide the control member 11 laterally to the slide 101. That is, the user only needs to pull the control member 11 in the upper direction, and the control member 11 can be easily moved out of the stop groove 102 without deliberately pulling the control member 11 laterally, which simplifies the user operation.

[0114] When the cutting platform 3 descends, the direction of movement of the operating component 11 is defined as the lower direction. The side wall of the stop groove 102 in the lower direction extends from the stop groove 102 towards the slide rail 101 without tilting towards the lower direction. The gravity of the cutting platform 3 exerts a pulling force on the operating component 11, which will not cause it to move towards the slide rail 101. The side wall of the stop groove 102 in the lower direction tilts towards the opposite direction of the lower direction, that is, the side wall of the stop groove 102 in the lower direction tilts towards the upper direction. When the vehicle bumps and causes the cutting platform 3 to jump, even if the control component 11 jumps and is slightly displaced in the gear slot 102, the side wall direction of the gear slot 102 will cause the control component 11 to return to the side of the gear slot 102 away from the slide rail 101 under the gravity of the cutting platform 3, ensuring that the control component 11 will not leave the original gear slot 102, that is, to keep the cutting platform 3 height stable.

[0115] Furthermore, even if the user intentionally releases the control component 11 manually at the slide 101, the control component 11 will enter the stop groove 102 on one side in a very short time, in conjunction with the action of the elastic component 12, thus preventing the cutting table 3 from falling directly to the lowest point.

[0116] When the control element 11 is not fully engaged with the gear slot 102, the height of the cutting platform 3 off the ground is greater than when the control element 11 is fully engaged with the same gear slot 102. That is, when the control element 11 is not fully engaged with the gear slot 102, the weight of the cutting platform 3 will cause the control element 11 to gradually slide until it is fully engaged with the gear slot 102. Similarly, when the vehicle bumps and causes the cutting platform 3 to jump, even if the control element 11 jumps and is slightly displaced in the gear slot 102 to a state of not being fully engaged, the gravity of the cutting platform 3 will cause the control element 11 to gradually slide until it is fully engaged with the gear slot 102.

[0117] The control member 11 is provided with a retaining plate 14 that can cooperate with the gear slot 102 on one side. The width of the gear slot 102 is greater than the thickness of the retaining plate 14 and less than the dimension of the control member 11 along the width direction of the gear slot 102. When the control element 11 engages with the gear slot 102, only the locking plate 14 on the control element 11 extends into the gear slot 102. Therefore, the size of a single gear slot 102 along the slide 101 direction can be reduced. That is, within the same size range, more gear slots 102 can be set, thereby increasing the total number of gears on the lawnmower. The height of the cutter blade off the ground after the cutter head 3 is raised and lowered is the cutting height. Therefore, more cutting heights are available for users to choose from, which is suitable for the needs of more users. In the prior art, the gear slots 102 of lawnmowers are mostly set to 5 to 8. In this embodiment, the gear slots 102 can have a larger setting range, so they can be set to more than 10. In this embodiment, the total lifting stroke of the cutter head 3 (the height difference between the highest and lowest points) is 3 inches. When 11 gear slots 102 are set, the height difference of the cutter head 3 between every two adjacent gear slots 102 is 0.3 inches. In another embodiment, the number of stop slots 102 is 13, and the height difference of the cutting platform 3 between any two adjacent stop slots 102 is 0.25 in. In another embodiment, the number of stop slots 102 is 16, and the height difference of the cutting platform 3 between any two adjacent stop slots 102 is 0.20 in.

[0118] In this embodiment, the product of the total lifting stroke (in) of the cutting platform 3, the number of stop slots 102, and the curb weight (kg) of the lawnmower is greater than 1×10. 3 Less than or equal to 6 × 10 4 (in·Kg). In another embodiment, the product of the total lifting stroke (in) of the cutter head 3, the number of stop slots 102, and the curb weight (Kg) of the lawnmower is greater than 6×10 3Less than or equal to 2.4 × 10 4 (in kg). A relatively reasonable numerical range allows a lawnmower of a certain size to have more reasonable mowing height settings, meeting the mowing height needs of more users. The greater the curb weight of the lawnmower, the more space it occupies, allowing for the installation of more complex components to achieve more complex technical effects. It should also have more settings and a wider mowing height range to meet more working conditions.

[0119] The translational mechanism of the lawnmower in this embodiment includes a front attachment 8 and a rear attachment, both hinged to the frame 1 and the cutter head 3. The rear attachment consists of rear attachment plates 7 located on the left and right sides of the frame 1. The front attachment 8, the frame 1, the rear attachment, and the cutter head 3 form a parallelogram structure, so that the cutter head 3 maintains a constant angle with the frame 1 when it moves. The linkage mechanism connects the operating member 11 and the rear attachment. The operating member 11 rotates around the first pivot 4 to drive the cutter head 3 to move upward or downward. The rear attachment is located outside the left and right edges of the frame 1.

[0120] Reference Appendix Figure 3 and Figure 25 , including Figure 25 This is an enlarged schematic diagram of the tie rod 6 and the height adjustment swing arm 5. The distance between the rear mounting plate 7 and the outer edge of the frame 1 in the left-right direction ranges from 0 to 50 mm. The main structure of the frame 1 includes two longitudinally extending beams. The rear mounting plate 7 is located outside the left-right edges of the frame 1, that is, outside the area of ​​the mutually distant side walls. (See attached diagram.) Figure 25 That is, H1 is less than or equal to 50mm.

[0121] In the prior art, the attachment points of the cutter 3 are all located on the inner side of the frame 1 in the left-right direction. Compared with the prior art, attaching to the outer side allows for a larger distance between the two attachment points, resulting in greater lateral stability. Since the cutter 3 is wider than the frame 1, users may occasionally use the cutter 3 as a step when stepping onto the lawnmower from the ground. The narrower attachment points in the prior art may cause the other side of the cutter 3 to lift up when stepped on by the user. This is because the difference in the length of the two lever arms is small with the attachment point as the rotation point, and a heavier user stepping on the cutter may cause the torque (lever arm multiplied by the equivalent weight) on the outer side to be greater than that on the inner side. In this embodiment, the wider attachment points increase the difference in the lever arms on both sides, making it difficult for a heavier user to cause the torque on the outer side to be greater than that on the inner side, thus making it difficult for the other side to lift up.

[0122] Specifically, the ratio of the distance between the two rear mounting plates 7 to the cutting width of the lawnmower is 0.3 to 0.8. In other embodiments, the ratio of the distance between the two rear mounting plates 7 to the cutting width of the lawnmower can also be set to 0.38 to 0.66. The width of the frame 1 is approximately 500 to 600 mm, and the standard cutting width of the cutter 3 is 42 inches or 54 inches. By placing the rear mounting pieces 0 to 50 mm outside the frame 1, the above ratio can be obtained. It should be noted that in common lawnmowers, at least one of the mowing motors is partially located outside the mounting point, resulting in increased rotational torque outside the mounting point. In this embodiment, the mounting point is moved outward relative to the prior art (see attached figure). Figure 3 This not only shortens the outer lever arm, but also places more of one of the mowing motors inside the attachment point, thereby significantly reducing the rotational torque outside the attachment point, making the mower 3 more stable and greatly reducing the problem of the other side of the mower 3 tilting up due to user stepping.

[0123] In other embodiments, only one rear mounting plate 7 may be set in the area outside the frame 1, and the other rear mounting plate 7 may be set in the area inside the frame 1. In this case, only one side can effectively increase the rotational torque outside the mounting point, that is, when the user stands on this side of the cutting table 3, the other side of the cutting table 3 is prevented from tilting up.

[0124] One embodiment of this specification also discloses a cutter head lifting device, which is connected to the frame of the lawnmower and the cutter head, for adjusting the height of the cutter head.

[0125] The cutting platform lifting device includes an operating component 11, a translation mechanism, and a linkage mechanism. The translation mechanism connects the cutting platform 3 to the vehicle frame 1, and is used to ensure that the angle between the cutting platform 3 and the vehicle frame 1 remains constant during the movement of the cutting platform 3, that is, the cutting platform 3 maintains approximately the same angle relationship with the ground during the lifting process. The linkage mechanism connects the operating component 11 to the translation mechanism, and when the operating component 11 moves, it drives the cutting platform 3 to move upward or downward.

[0126] The linkage mechanism includes a first rotating shaft 4 and a quick-release locking element 16. As mentioned above, the operating element 11 rotates around the first rotating shaft 4 disposed on the frame 1. The linkage mechanism connects the operating element 11 with the translation mechanism. When the operating element 11 is pulled by the user, it drives the first rotating shaft 4 to rotate and the cutting table 3 to move upward or downward. In this embodiment, the rotation direction of the first rotating shaft 4 is defined as follows: the direction of rotation of the first rotating shaft 4 when the cutting table 3 moves upward is the positive direction, and the direction of rotation of the first rotating shaft 4 when the cutting table 3 moves downward is the negative direction.

[0127] The quick-release locking stop 16 connects the frame 1 and the first rotating shaft 4. When the rotation speed of the first rotating shaft 4 is greater than the first rotation speed, the first rotating shaft 4 is restricted from continuing to rotate. Under normal operating conditions, the cutter head 3 will only rise and fall slowly. However, if there is a component failure or other situation, the cutter head 3 may rise or fall rapidly. In minor cases, this may cause the cutter head lifting device to bear excessive impact force and reduce its service life. In severe cases, it may even cause injury to the user. Therefore, this embodiment discloses that a quick-release locking stop 16 is provided on the first rotating shaft 4 to limit the rotation speed of the first rotating shaft 4. When the height of the cutter head 3 changes rapidly, the rotation of the first rotating shaft 4 is restricted, so as to prevent the first rotating shaft 4 from continuing to rotate and causing the height of the cutter head 3 to continue to change, resulting in more serious consequences.

[0128] In some optional embodiments, the first rotational speed is 0.1 rpm, meaning that the height of the cutting table 3 is limited to change when the rotational speed of the first rotating shaft 4 is greater than 0.1 rpm. In other optional embodiments, the first rotational speed is 0.2 rpm, 0.3 rpm, or 1 rpm.

[0129] It should be noted that the quick-release locking device 16 connecting the frame 1 and the first pivot 4 does not limit the quick-release locking device 16 to be directly connected to the frame 1 and the first pivot 4; they may be indirectly connected through other components.

[0130] In one embodiment of this specification, the cutting platform lifting device further includes a buffer connecting the frame 1 and the linkage assembly, which reduces the pulling force required to raise the cutting platform 3 by pulling the control component 11. Especially in usage scenarios where the user needs to manually pull the cutting platform 3 to raise or lower it, the buffer can effectively reduce the force required for the user to pull the control component 11.

[0131] In some optional embodiments, the buffer includes a tension spring that connects to the frame 1 and the height adjustment axle end plate 9 at both ends, or a torsion spring that connects to the frame 1 and the first pivot 4 at both ends; the tension spring or torsion spring here can reduce the burden on the user when pulling the control element 11 and improve the user's comfort.

[0132] For example: In the lawnmower industry, the common height adjustment range of the mower head 3 is approximately 3 to 4.5 inches, and the lowest point of the height adjustment range is approximately 1 to 1.5 inches above the ground. Considering the need for a margin in the mechanical structure of the mower head 3, 7 inches is used here as the calculated data for the maximum height above the ground of the mower head 3. If the aforementioned buffer part is disconnected from the mower head 3, the mower head 3 will fall rapidly downwards. When the mower head 3 falls from its maximum height above the ground, it is mainly affected by gravity, and its falling process is inevitably affected by a certain amount of resistance. Calculations show that its falling process is slightly less than 0.19 seconds, and its instantaneous landing speed is approximately 1.9 m / s. During the raising and lowering of the mower head in the lawnmower industry, the total rotational stroke of the control lever 11 is approximately 40° around the first rotating shaft 4, which is approximately 0.11 revolutions of the first rotating shaft 4, corresponding to an average rotational speed of approximately 0.58 r / s (revolutions per second) for the first rotating shaft 4.

[0133] Reference Appendix Figure 35 The rotational speed of the first rotating shaft 4 is related not only to the vertical movement speed of the cutting platform 3, but also to the length and angle of the height adjustment arm 5. The length of the height adjustment arm 5 is set to 10cm. During the lifting and lowering process of the cutting platform, the height adjustment arm 5 rotates within a range of ±20° relative to the horizontal direction. Calculations show that the rotational speed at the moment of landing is approximately 3.2 r / s (revolutions per second).

[0134] As described above, the quick-release locking mechanism should lock the first rotating shaft 4 before its rotational speed reaches 3.2 r / s. However, in reality, if the quick-release locking effect is only generated when that speed is reached, the desired effect cannot be achieved. Therefore, the quick-release locking mechanism should generate the locking effect at the initial stage when the first rotating shaft 4 begins to rotate rapidly, that is, at the initial stage when the cutting platform 3 begins to fall. Therefore, it is advisable to set the quick-release locking device at a speed lower than the aforementioned average rotational speed of the first rotating shaft, such as 0.1 r / s, 0.2 r / s, or 0.3 r / s.

[0135] Meanwhile, considering that its quick-release locking mechanism should not affect the user's normal operation, that is, it should not be too sensitive to be triggered when the user adjusts the height of the cutting table. The adjustment time for normal operation by the user is often 1 to 2 seconds, during which the rotation angle of the first rotating shaft 4 is 5°, and its speed is significantly less than the aforementioned 0.1 r / s. Therefore, in this embodiment, the first speed is set to 0.1 rpm. That is, when the speed of the first rotating shaft 4 is greater than 0.1 r / s, the quick-release locking component 16 is triggered to lock the first rotating shaft 4, preventing the rapid movement of the operating component or a component of the cutting table lifting device from causing injury to the user.

[0136] In one of the more specific embodiments, the quick-release locking member 16 includes a lock housing 161, a lock cylinder 163, a lock tongue, and a reset member 165. The lock housing 161 is disposed on the frame 1, the lock cylinder 163 is disposed on the first rotating shaft 4, the lock tongue is movably connected to one of the lock housing 161 and the lock cylinder 163, and the reset member 165 is connected to the lock tongue.

[0137] In some optional embodiments, the reset member 165 restricts the first rotating shaft 4 from rotating at a speed less than a first speed, so that the bolt does not abut against the other of the lock housing 161 and the lock cylinder 163; when the first rotating shaft 4 rotates at a speed greater than the first speed, the bolt abuts against the other of the lock housing 161 and the lock cylinder 163, so that the first rotating shaft 4 cannot rotate.

[0138] As described above, the quick-release locking member 16 can lock the first rotating shaft 4 when its rotational speed is greater than a set first rotational speed. In some optional embodiments, the quick-release locking member 16 only engages with the lock shell 161 and the lock cylinder 163 when the first rotating shaft 4 rotates forward at a speed greater than the first rotational speed, preventing the first rotating shaft 4 from rotating. When the first rotating shaft 4 rotates in the reverse direction at a speed greater than the first rotational speed, the lock tongue does not engage with the lock shell 161 and the lock cylinder 163, and the first rotating shaft 4 can continue to rotate.

[0139] In one more specific embodiment, the lock housing 161 is provided with an abutment portion, and the locking tongue moves and abuts against the abutment portion when the speed of the first rotating shaft 4 is greater than a first rotational speed. This achieves the technical effect of locking the first rotating shaft 4.

[0140] In one more specific embodiment, the latch, when abutting against the other of the lock housing 161 and lock cylinder 163, experiences a resistance force that causes the latch to tend to move closer to the other of the lock housing 161 and lock cylinder 163. That is, as soon as the latch begins to be abutted, the resulting resistance force makes the abutment between the two increasingly tighter, preventing overall vibration from causing them to disengage, thus making its locking effect on the first pivot 4 more reliable.

[0141] In some more specific embodiments, reference is made to the appendix. Figure 35 The figure shows a quick-release locking element 16 configured on the first pivot 4, see attached figure. Figure 36 The figure shows an enlarged schematic diagram of the linkage mechanism. (See attached diagram.) Figure 37The figure shows a cross-sectional schematic diagram of the quick-release locking member 16. The lock housing 161 is fixed to the frame 1, and the lock cylinder 163 is fixed to the first rotating shaft 4. A portion of the lock housing 161 has an annular structure, and its annular inner wall is provided with ratchet teeth 162 protruding from the surface; in this embodiment, the lock tongue is configured as a pawl 164, one end of which is rotatably connected to the lock cylinder 163, and the aforementioned reset member 165 is provided at the pawl 164 to prevent the first rotating shaft 4 from contacting the aforementioned ratchet teeth 162 when it is stationary.

[0142] Continue to refer to the appendix Figure 37 When the first rotating shaft 4 rotates, the pawl 164 will be subjected to centrifugal force, causing it to tend to move outward away from the first rotating shaft 4. However, in this embodiment, a reset member 165 is provided to limit the movement of the pawl 164. When the rotational speed of the first rotating shaft 4 is less than the first rotational speed mentioned above, the centrifugal force on the pawl 164 cannot effectively overcome the force exerted by the reset member 165 on the pawl 164, thus preventing the pawl 164 from making significant movement relative to the lock cylinder 163. Conversely, when the rotational speed of the first rotating shaft 4 is greater than the first rotational speed, the centrifugal force on the pawl 164 is greater and can overcome the force exerted by the reset member 165 on the pawl 164, causing the pawl 164 to rotate and contact the lock housing 161.

[0143] Continue to refer to the appendix Figure 37 and attached Figure 38 , attached Figure 38 For the appendix Figure 37 A partially enlarged schematic diagram is shown. The lock housing 161 shown in the figure has a ratchet 162, which has an abutment surface 1622 for abutting and restricting the pawl 164. The pawl 164 has a claw head surface 1641 for abutting the abutment surface 1622. As described above, when the rotational speed of the first rotating shaft 4 is greater than the first rotational speed and it rotates counterclockwise, the pawl 164 is subjected to centrifugal force and rotates relative to the lock cylinder 163 until the claw head surface 1641 of the pawl 164 abuts the abutment surface 1622 of the ratchet 162, thereby preventing the first rotating shaft 4 from continuing to rotate.

[0144] Please refer to the appendix again. Figure 38 As shown in the figure, the ratchet 162 has a generally smooth transition surface 1621, and the pawl 164 has a generally smooth pawl side surface 1642. As described above, when the rotational speed of the first rotating shaft 4 is greater than the first rotational speed and it rotates clockwise, the pawl 164 rotates relative to the lock cylinder 163 under the action of centrifugal force. When the pawl 164 contacts the ratchet 162 under the action of centrifugal force, the pawl side surface 1642 of the pawl 164 contacts the transition surface 1621 of the ratchet 162, and the contact between the two does not have a significant limiting effect on the rotation of the first rotating shaft 4. That is, at this time, the quick-release locking member 16 does not restrict the rotation of the first rotating shaft 4.

[0145] It should be noted that in some embodiments, without external force intervention, after the pawl 164 engages with the ratchet 162 to lock the first rotating shaft 4, it will remain in this locked state. When the user needs to release this locking state, simply pull the lever 11 to reverse the first rotating shaft 4 until the pawl 164 disengages from the ratchet 162. The pawl 164 will then return to its initial position under the action of the reset member 165, thus releasing the locking effect on the first rotating shaft 4. It should be further noted that if the user directly releases the lever 11 at this time, the first rotating shaft 4 may still rotate rapidly again and be locked again by the quick-release locking member 16.

[0146] In some optional embodiments, the quick-release locking element 16 is disposed on the first rotating shaft 4. When the cutting platform 3 rises, the first rotating shaft 4 rotates clockwise; conversely, when the cutting platform 3 falls, the first rotating shaft 4 rotates counterclockwise. If a component in the cutting platform lifting device malfunctions, the cutting platform 3 may fall rapidly downwards. The first rotating shaft 4 will then rotate rapidly counterclockwise, and the quick-release locking element 16 will brake the first rotating shaft 4, preventing the cutting platform 3 from continuing to fall, thus preventing the cutting platform 3 from falling directly to the ground and injuring users.

[0147] In some optional embodiments, the quick-release locking element 16 is disposed on the first rotating shaft 4. When the cutting platform 3 descends, the first rotating shaft 4 rotates clockwise; conversely, when the cutting platform 3 rises, the first rotating shaft 4 rotates counterclockwise. If a component in the cutting platform lifting device malfunctions, it may cause the first rotating shaft 4 to rotate rapidly counterclockwise. For example, if the connection between the first rotating shaft 4 and the cutting platform 3 is broken, the first rotating shaft 4 will rotate rapidly counterclockwise under the action of the buffer. The quick-release locking element 16 will then brake the first rotating shaft 4, preventing the operating element 11 from rapidly springing upwards and causing injury to the user.

[0148] In some optional embodiments, the cutting platform lifting device is equipped with at least two quick-release locking elements 16. One quick-release locking element 16 restricts the first rotating shaft 4 from continuing to rotate when it rotates forward at a speed greater than a first rotational speed, and the other quick-release locking element 16 restricts the first rotating shaft 4 from continuing to rotate when it rotates backward at a speed greater than the first rotational speed. In this embodiment, as long as the rotational speed of the first rotating shaft 4 is greater than the first rotational speed, regardless of whether it rotates forward or backward, at least one quick-release locking element 16 will brake the first rotating shaft 4 to prevent injury to the user.

[0149] In some optional embodiments, two sets of ratchet teeth 162 and pawls 164 are configured in a quick-release locking member 16. The two sets of ratchet teeth 162 and pawls 164 are mirror-symmetrically arranged, meaning that one set of ratchet teeth 162 and pawls 164 can restrict the rapid forward rotation of the first rotating shaft 4, while the other set of ratchet teeth 162 and pawls 164 can restrict the rapid reverse rotation of the first rotating shaft 4. This effectively ensures that when the rotational speed of the first rotating shaft 4 in either the forward or reverse direction exceeds a first rotational speed, the single quick-release locking member 16 brakes the first rotating shaft 4, preventing damage to the user.

[0150] In some optional embodiments, the reset member 165 is configured as at least one of a compression spring, a tension spring, and a torsion spring. (Refer again to the appendix...) Figure 37 and attached Figure 38 The reset element 165 shown in the figure is configured as a tension spring with pawl 164 and lock cylinder 163 connected at both ends respectively.

[0151] In another alternative embodiment, the pawl 164 is rotatably connected to the lock cylinder 163 at its center. The reset member 165 is configured to connect one end of the pawl 164 and the compression spring of the lock cylinder 163. The centrifugal force experienced by the other end of the pawl 164 when the first rotating shaft 4 rotates is greater than that experienced by the end connected to the compression spring. Therefore, when the rotational speed of the first rotating shaft 4 is high, the centrifugal force of the pawl 164 will compress the compression spring until the pawl 164 contacts the ratchet tooth 162.

[0152] In another alternative embodiment, the reset member 165 is configured as a magnetic component capable of generating magnetic repulsion or attraction on the latch. When the rotational speed of the first rotating shaft 4 is high, the centrifugal force of the pawl 164 overcomes the magnetic force until it contacts the ratchet 162.

[0153] In summary: The above embodiments disclose a cutting platform lifting device and a quick-release locking member 16 applied to the cutting platform lifting device. When the abnormal movement of the lifting mechanism of the cutting platform 3 causes the first rotating shaft 4 to rotate too fast, it has a limiting effect on it. In particular, when the cutting platform 3 falls rapidly or the control lever rebounds rapidly upward, it locks the first rotating shaft 4 to prevent injury to the user. For example, when the user removes the cutting platform 3 from the frame 1, the cutting platform lifting device loses the pulling force exerted on it by the weight of the cutting platform 3, causing the cutting platform lifting device to run rapidly under the action of the buffer. The quick-release locking member 16 can lock the first rotating shaft 4 to prevent the cutting platform lifting device from continuing to run rapidly and causing greater damage. In particular, for components such as the control member 11 that are easy to directly contact the user, their rapid movement may cause injury to the user. Therefore, the quick-release locking member 16 can prevent injury to the user by locking the first rotating shaft 4.

[0154] One embodiment of this specification also discloses a lawnmower, which includes a frame 1, a cutter head 3, a battery pack, a cutter head lifting device, etc., as described above, wherein the battery pack is detachably mounted on the frame 1. The cutter head lifting device includes a first rotating shaft 4 and a quick-release locking device 16. The first rotating shaft 4 rotates in the forward direction when the cutter head 3 moves upward. The quick-release locking device 16 connects the frame 1 and the first rotating shaft 4, and restricts the first rotating shaft 4 from continuing to rotate when the rotational speed of the first rotating shaft 4 is greater than a first rotational speed of 0.5 rpm.

[0155] In one embodiment of this specification, a cutting table lifting device is also disclosed, which is connected to the frame 1 of the lawnmower and the cutting table 3, and is used to adjust the height of the cutting table 3.

[0156] The cutting platform lifting device includes an operating element 11, a translation mechanism, a linkage mechanism, a stop element 10, and a centering section. Specifically, the translation mechanism connects the cutting platform 3 to the frame 1, and is used to limit the angle between the cutting platform 3 and the frame 1 to remain constant when the cutting platform 3 moves; the linkage mechanism connects the operating element 11 to the translation mechanism, and when the operating element 11 is pulled by the user, it drives the cutting platform 3 to move upward or downward; the stop element 10 is connected to the frame 1, and the stop element 10 includes a slide rail 101 passing through the operating element 11 and stop grooves 102 located on both sides of the slide rail 101, and the operating element 11 cannot drive the cutting platform 3 to move when it is engaged with the stop grooves 102; the operating element 11 has a first position when engaged with the centering section, and the distance between the operating element 11 in the first position and the stop grooves 102 on both sides is equal.

[0157] As described above, in some optional embodiments, the stop member 10 is provided with stop grooves 102 on both sides, that is, when the operating member 11 is engaged with the stop groove 102 on either side, the height of the cutting table 3 is a fixed value.

[0158] In some optional embodiments, the linkage mechanism includes a second rotating shaft and an elastic element 12. When the operating element 11 moves around the second rotating shaft, it moves towards one side of the stop groove 102. Further, when the operating element 11 rotates forward around the second rotating shaft, it moves towards the first side stop groove 102; when the operating element 11 rotates backward around the second rotating shaft, it moves towards the second side stop groove 102.

[0159] As described above, the elastic element 12 is connected to the operating element 11. When the operating element 11 is closer to one of the stop slots 102, the elastic element 12 drives the operating element 11 to move towards the stop slot 102 that is closer. However, when the operating element 11 is located in the middle position of the two stop slots 102, the elastic element 12 does not exert any force on the operating element 11 towards either stop slot 102.

[0160] In some optional embodiments, the cutting table 3 moves upward or downward when the operating member 11 moves along the slide 101 of the stop member; the cutting table 3 is located at the highest point of its vertical movement when the operating member 11 engages with the centering part. (See attached figure) Figure 39 In this embodiment, the centering part is configured as a centering groove 103 located at the top of the slide 101. The centering groove 103 can cooperate with the operating member 11, and the operating member 11 cannot move to either side of the stop groove 102 when it is engaged with the centering groove.

[0161] In some optional embodiments, the actuating member 11 is at least partially cylindrical, and the centering portion is configured as a centering groove 103 formed in the stop member 10 and capable of engaging with the cylindrical structure of the actuating member 11. The cylindrical structure of the actuating member 11 makes it easier to disengage from the centering groove 103.

[0162] In some optional embodiments, at least a portion of the actuating element 11 located in the first position is aligned with the projection of the second rotating axis onto the ground. (See attached diagram.) Figure 39 The figure does not show the control member 11 in the first position state, but the centering groove 103 shown in the figure and the projection of the second rotating shaft on the ground are on the same straight line. Therefore, at least a part of the control member 11 in the first position state must be on the same straight line as the projection of the second rotating shaft on the ground.

[0163] In some optional embodiments, reference is made to the appendix. Figure 40 The centering portion is configured as a positioning block detachably connected to the stop member 10. When the positioning block is engaged with the stop member 10, it cannot move along the movement direction of the operating member 11. The positioning block is provided with a centering groove 103 that engages with the operating member 11. When the operating member 11 engages with the centering groove 103 of the positioning block, it is located in a first position. That is, in this embodiment, the centering portion is not fixed to the stop plate.

[0164] In some optional embodiments, reference is made to the appendix. Figure 40 The cutting table 3 moves downward when the operating member 11 moves in the first direction, and the operating member 11 cannot move in the first direction when it is engaged with the centering part. That is, at this time, the user does not need to hold the position of the operating member 11 by hand.

[0165] As described above, in some embodiments of this specification, the cutting table lifting device includes a centering portion for confining the operating member 11 to the middle position of the two side stop slots 102. During the assembly of the cutting table lifting device, by confining the operating member 11 to the centering portion and installing and verifying the position of the limiting member 13, the technical problem that the elastic member 12 cannot correctly exert bias pressure on the stop slots 102 when the operating member 11 is slightly offset from the middle position of the two side stop slots 102 due to the assembly misalignment of the limiting member 13 is avoided. The user can also verify whether the cutting table lifting device is working properly by pulling the operating member 11 to the first position and feeling whether the operating member 11 is subjected to the lateral thrust generated by the elastic member.

[0166] One embodiment of this specification also discloses a lawnmower, which includes a frame 1, a cutter head 3, a battery pack, a cutter head lifting device, etc., as described above, wherein the battery pack is detachably mounted on the frame 1. The cutter head lifting device includes a stop member 10 and a centering part. The stop member 10 is connected to the frame 1, and the stop member 10 includes a slide 101 through which an operating member 11 passes and stop grooves 102 located on both sides of the slide 101; the operating member 11 has a first position when engaging with the centering part, and the distance between the operating member 11 in the first position and the stop grooves 102 on both sides is equal.

[0167] An embodiment of this specification also discloses a cutting table lifting device, which is connected to the frame 1 of the lawnmower and the cutting table 3, for adjusting the height of the cutting table 3.

[0168] The cutting platform lifting device includes an operating element 11, a translation mechanism, a linkage mechanism, a stop element 10, and a locking element. Specifically, the translation mechanism connects the cutting platform 3 to the frame 1, and is used to limit the angle between the cutting platform 3 and the frame 1 to remain constant when the cutting platform 3 moves; the linkage mechanism connects the operating element 11 to the translation mechanism, and the operating element 11 drives the cutting platform 3 to move upward or downward when pulled by the user; the stop element 10 is connected to the frame 1, and the stop element 10 includes a slide rail 101 passing through the operating element 11 and stop grooves 102 located on both sides of the slide rail 101, and the operating element 11 cannot drive the cutting platform 3 to move when it is engaged with the stop grooves 102; the locking element is connected to the frame 1, and the cutting platform 3 cannot move upward when the operating element 11 is engaged with the locking element.

[0169] The cutting platform 3 has a relatively large mass. In order to reduce the force required to pull the operating member 11 to raise the cutting platform 3, the aforementioned buffer is generally provided. However, after the cutting platform lifting device is disengaged from the cutting platform 3, if the operating member 11 is not limited, the buffer may cause the operating member 11 to move rapidly and cause injury to the user. Therefore, this embodiment provides a locking member for limiting the operating member 11.

[0170] In some optional embodiments, the control element 11 can engage with the locking element when the cutter 3 is at least close to its lowest point. The primary scenario for detaching the cutter 3 from the lawnmower is for maintenance or disassembly, and in this scenario, the cutter 3 is typically lowered to its lowest point first. However, after disconnecting the cutter 3 from the lawnmower body, the control element 11 has its maximum travel. If the locking element is not used to limit the control element 11 at this point, it may cause more significant injury to the user. Furthermore, limiting the control element 11 to this lowest point also reduces the amount of work required when reinstalling the cutter 3 onto the lawnmower body.

[0171] In some optional embodiments, the locking element is disposed on the stop element 10, which is relatively close to the outside of the lawnmower and can be directly seen by the user. This allows the user to directly judge the height of the cutter 3 by observing the engagement state between the control element 11 and the stop element 10. Similarly, the user can also judge the engagement state by observing the position of the control lever and the locking element, which helps determine whether the control lever will quickly spring up and cause injury to the user after the cutter 3 is detached from the lawnmower body. That is, when the user needs to remove the cutter 3 from the lawnmower body, they should actively control the control lever to engage with the locking element at the stop element 10.

[0172] In another optional embodiment, the locking element may also be directly configured on the frame 1 or other components fixedly connected to the frame 1.

[0173] In some optional embodiments, reference is made to the appendix. Figure 43 The figure shows a schematic diagram of the structure of the stop member 10. The stop member is configured as a hook 104 that restricts the upward movement of the operating member 11 when it cooperates with the operating member 11. The operating member 11 is limited by cooperating with the hook 104.

[0174] In some alternative embodiments, the actuating member 11 is provided with a groove 141 for engaging the hook 104.

[0175] In some optional embodiments, reference is made to the appendix. Figure 41 Appendix Figure 42 The figure shows a schematic diagram of the structure of the control member 11. The control member 11 is provided with a retaining plate 14 for engaging with the stop groove 102. In one more specific embodiment, the groove 141 is formed in the retaining plate 14.

[0176] As described above, in some optional embodiments, the linkage mechanism includes an elastic member 12 connected to the operating member 11, which generates a force on the operating member 11 to move it toward the stop groove 102, thereby preventing the operating member 11 from disengaging from the stop groove 102 and causing a disengagement event. Furthermore, the locking member is configured to at least overcome the elastic force of the elastic member 12 on the operating member 11 before disengaging from the operating member 11, thus reducing the possibility that the operating member 11 may easily disengage from the locking member due to vibration, and improving the safety of the user when disassembling the cutting table 3.

[0177] In other words, the header lifting device is equipped with locking mechanisms that restrict the operation of the control components, preventing the header from moving upwards. This avoids the control components from rapidly rebounding due to accidental detachment of the header from the lifting device, thus preventing injury to the user from being struck by the control components. In particular, it prevents injury to the user when removing the header from the chassis, as the control components, no longer restrained by the locking mechanisms, could rebound rapidly under the action of the buffer.

[0178] In some more specific embodiments, the force exerted by the elastic element 12 on the actuating element 11 is primarily directed toward the stop groove 102, that is, the direction of this force is from the slide rail 101 of the stop element 10 toward the stop groove 102. (See attached...) Figure 39 For example, the force exerted by the elastic element 12 on the operating element 11 is mainly directed from the slide rail 101 of the stop element 10 to either the left or the right towards the stop groove 102 on either side. The operating element 11 needs to overcome the above force to disengage from the locking element, which means that when the operating element 11 is engaged with the locking element, it is at least close to the stop groove 102 on either side, rather than at a position where the elastic element 12 does not exert a lateral force on the operating element 11.

[0179] As described above, in some optional embodiments, the cutting platform lifting device further includes a buffer connecting the frame 1 and the linkage assembly, used to reduce the pulling force required by the user to raise the cutting platform 3 by pulling the operating element 11. The locking element is configured to at least overcome part of the elastic force of the buffer on the operating element 11 before disengaging from the operating element 11. That is, it reduces the possibility that the operating element 11 may easily detach from the locking element due to vibration, improving the safety of the user when disassembling the cutting platform 3.

[0180] In some more specific embodiments, reference is made to the appendix. Figure 43 The hook 104 extends downward in a certain part. During the process of disengaging the operating member 11 from the hook 104, it needs to move along the downwardly extending hook 104. However, this movement needs to overcome the force exerted by the buffer on the operating member 11. Therefore, it is safer and more reliable to use the operating member 11 in conjunction with the locking member.

[0181] In another optional embodiment, a component capable of at least partially independent movement may be configured on the operating member 11 or the stop member 10. This component can be manipulated by the user to engage with the operating member 11 or the stop member 10 to limit the movement of the operating member 11. For example, a pin, a socket, etc. may be configured on the operating member 11 or the stop member 10.

[0182] One embodiment of this specification also discloses a lawnmower, which includes a frame 1, a cutter head 3, a battery pack, a cutter head lifting device, etc., as described above, wherein the battery pack is detachably mounted on the frame 1. The cutter head lifting device includes a stop member 10 and a locking member. The stop member 10 is connected to the frame 1 and includes a slide 101 through which an operating member 11 passes and a stop groove 102, wherein the cutter head 3 cannot move downward when the operating member 11 is engaged with the stop groove 102; the locking member is connected to the frame 1, wherein the cutter head 3 cannot move upward when the operating member 11 is engaged with the locking member.

[0183] It should be noted that: the support platform in some embodiments of this specification is seat 2, but the cutting platform lifting device in the above embodiments is also applicable to other lawnmowers that do not have seat 2, such as standing lawnmowers. Furthermore, the solution that does not include a support platform in this specification is a push lawnmower or a self-propelled lawnmower; that is, it should be understood that the lawnmowers to be protected by this specification include, but are not limited to, riding lawnmowers and standing lawnmowers.

[0184] In other embodiments of this specification, the cutter blade at the mower 3 is driven by a mowing motor, and the mower should include a battery pack that powers the mower 3.

[0185] This specification is not limited to the specific embodiments described above. Those skilled in the art will readily understand that many alternative solutions exist for the lawnmower and mower lifting device described herein without departing from the principles and scope of this specification. The scope of protection of this specification is determined by the claims.

Claims

1. A cutting table lifting device, connecting the frame of a lawnmower and the cutting table, characterized in that, include: Control components; A translation mechanism, connecting the cutting table and the vehicle frame, is used to limit the angle between the cutting table and the vehicle frame to remain constant when the cutting table moves. A linkage mechanism connects the control element and the translation mechanism; when the control element is pulled by the user, it causes the cutting table to move upward or downward. A shifting element is connected to the frame. The shifting element includes a slide through which the operating element passes and shifting slots located on both sides of the slide. When the operating element is engaged with the shifting slots, it cannot drive the cutting table to move. Regarding the center section, the operating member has a first position when engaging with the center section, and the distance between the operating member in the first position and the stop grooves on both sides is equal.

2. The cutting platform lifting device according to claim 1, characterized in that: The linkage mechanism includes: The second rotating shaft, when the operating element moves around the second rotating shaft, moves toward the stop groove on one side; An elastic element is connected to the operating element. When the operating element is closer to one of the gear slots, the elastic element drives the operating element to move towards the gear slot on the closer side.

3. The cutting platform lifting device according to claim 2, characterized in that: When the operating member is in the first position, the elastic member does not exert a force on the operating member toward one of the stop slots.

4. The cutting platform lifting device according to claim 1, characterized in that: The cutting platform moves upward or downward when the operating member moves along the slide of the stop member; the cutting platform is located at the highest point of the vertical movement when the operating member is engaged with the centering part.

5. The cutting platform lifting device according to claim 1, characterized in that: The operating element is at least partially cylindrical, and the centering portion is configured as a centering groove formed in the stop element and capable of engaging with the cylindrical structure of the operating element.

6. The cutting platform lifting device according to claim 2, characterized in that: At least a portion of the control element located in the first position is aligned with the projection of the second axis onto the ground.

7. The cutting platform lifting device according to claim 2, characterized in that: The centering part is configured as a detachable positioning block connected to the gear shift member. When the positioning block is engaged with the gear shift member, it cannot move along the movement direction of the operating member. The positioning block is provided with a centering groove that engages with the operating member.

8. The cutting platform lifting device according to claim 2, characterized in that: The cutting table moves downward when the operating member moves in the first direction, and the operating member cannot move in the first direction when it is engaged with the centering part.

9. A lawnmower, characterized in that, include: Frame; A cutting platform, located under the vehicle frame, is used for mowing grass; The battery pack, mounted on the chassis, is used to power the cutting table; Cutting table lifting device, the cutting table lifting device comprising: Control components; A translation mechanism, connecting the cutting table and the vehicle frame, is used to limit the angle between the cutting table and the vehicle frame to remain constant when the cutting table moves. A linkage mechanism connects the control element and the translation mechanism; when the control element is pulled by the user, it causes the cutting table to move upward or downward. A gear shifting component connected to the vehicle frame, the gear shifting component including a slide rail through which the operating element passes and gear shifting grooves located on both sides of the slide rail; Regarding the center section, the operating member has a first position when engaging with the center section, and the distance between the operating member in the first position and the stop grooves on both sides is equal.

10. The lawnmower according to claim 9, characterized in that: The lawnmower also includes a seat mounted on the frame, with the controls located on the left and / or right side of the seat.

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