Motor support, cutterhead lifting structure and mower

Abstract

The utility model provides a motor support, a cutterhead lifting structure and a mower, the motor support comprises a mounting seat and a long pipe integrally formed below the mounting seat, and the mounting seat is adaptive to the shape of a motor and is used for fixedly mounting the motor; the long pipe is arranged corresponding to an output shaft of the motor and used for allowing the output shaft of the motor to penetrate through after the motor is installed on the installation base. The position, corresponding to the motor output shaft, of the mounting base extends downwards to form a long pipe structure, the motor and the motor output shaft do not make direct contact with a mower chassis after the motor is mounted in the motor support, the probability that the motor and the motor output shaft directly shake relative to the chassis is effectively reduced, and then motor energy consumption is effectively reduced; the service life of the motor and the service life of a sealing piece between the output shaft of the motor and the chassis are remarkably prolonged, and cost reduction and efficiency improvement of enterprises are facilitated; and meanwhile, the grass clippings discharging efficiency and the mowing efficiency are remarkably improved, and the convenience of chassis cleaning operation is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of grass cutting equipment, and further relates to a motor support, a cutter head lifting structure and a grass cutter. BACKGROUND

[0002] As a commonly used driving tool of various production machines and appliances, it is well known that the output shaft of a motor is usually subjected to a large resistance and generates a certain vibration during use. For example, a power motor applied to a grass cutter.

[0003] As a mechanical tool for cutting lawns and vegetation by means of high-speed rotation of blades, in the related art, the blades are mounted on a cutter head, and the cutter head is mounted on the end of the output shaft of a power motor. In order to reduce production costs, the power motor is directly mounted on the chassis of the grass cutter, and the output shaft of the power motor is connected to the cutter head in transmission after penetrating through the chassis. During use, the output shaft of the power motor rotates to drive the cutter head and the blades thereon to rotate synchronously, thereby realizing the grass cutting action. For the related art described above, since the resistance of the output shaft of the power motor is large during the grass cutting action, the connection stiffness between the power motor and the chassis is usually poor, and the power motor often slightly shakes relative to the chassis, which not only easily damages the sealing element between the output shaft of the power motor and the chassis, but also shortens the service life of the motor and increases the energy consumption of the motor, and there is room for improvement. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a motor support, a cutter head lifting structure and a grass cutter, so as to reduce the probability of shaking of the motor relative to the equipment during work, thereby reducing the energy consumption of the motor and prolonging the service life of the motor and the sealing element between the output shaft of the motor and the equipment.

[0005] The technical scheme provided by the application is as follows:

[0006] In one aspect, the application provides a motor support, comprising:

[0007] A mounting seat adapted to the shape of a motor and used for fixing the motor;

[0008] A long tube integrally formed below the mounting seat and arranged corresponding to the output shaft of the motor and used for penetrating the output shaft of the motor after the motor is mounted on the mounting seat.

[0009] The motor support provided by the application is characterized in that a mounting seat is provided with an integrally formed long tube corresponding to the position of the motor output shaft, the motor is fixedly arranged on the mounting seat, and the output shaft of the motor extends out through the long tube; when the motor is arranged on an application device, the motor support is connected with the application device, the long tube extends out through the corresponding wall surface of the application device, and the motor output shaft is connected with a to-be-driven component; since the motor and the motor output shaft do not directly contact the application device, the probability of shaking of the motor and the motor output shaft relative to the application device is effectively reduced, the energy consumption of the motor is effectively reduced, the service life of the motor and the service life of a sealing element between the motor output shaft and the application device are significantly prolonged, and the enterprise can reduce costs and increase benefits.

[0010] In some embodiments, a containing groove is arranged at the end of the long tube away from the mounting seat and communicates with the opening of the end of the long tube away from the mounting seat, and the containing groove is used for adapting to the shape of the to-be-driven component and fixing the connection point of the motor output shaft and the to-be-driven component.

[0011] The motor support provided by the application is characterized in that in actual application, after the motor output shaft is connected with the to-be-driven component of the application device, the connection end of the to-be-driven component extends into the containing groove, the long tube is used for covering the connection point of the to-be-driven component and the motor output shaft, the probability of loosening, damage and failure of the connection end of the to-be-driven component caused by external environment such as dust and moisture is effectively reduced, and the service life of the application device is prolonged.

[0012] In some embodiments, a plurality of partitions are arranged on the inner wall of the mounting seat and are uniformly and spacedly arranged around the axis of the mounting seat, and the side of the plurality of partitions away from the mounting seat abuts against the outer wall of the motor.

[0013] The motor support provided by the application is characterized in that on the one hand, when the motor is arranged on the mounting seat, the plurality of partitions jointly support the motor, the probability of shaking of the motor relative to the mounting seat is reduced, and the probability of damage of the motor and the motor output shaft is further reduced; on the other hand, the heat generated by the motor during operation is dissipated to the surrounding environment through the gaps between the partitions, the motor is facilitated to dissipate heat, and the service life of the motor is further prolonged.

[0014] In some embodiments, a positioning groove is arranged on the bottom wall of the mounting seat and is adapted to the shape of the motor.

[0015] The motor support provided by the application is characterized in that the positioning groove is used for positioning the motor relative to the mounting seat, and the stability of the motor arranged in the mounting seat is improved.

[0016] In some embodiments, a mounting hole is arranged on the bottom wall of the mounting seat and is used for detachably connecting the mounting seat and the motor.

[0017] The bottom wall of the mounting seat is formed with a protruding ring corresponding to the circumferential side of the mounting hole, which protrudes from the bottom wall of the mounting seat and is adapted to the shape of the motor to embed the motor along the axis of the mounting seat and slide fit with the motor.

[0018] In actual application, the protruding ring slides along the axis of the mounting seat relative to the motor until it is completely embedded in the corresponding groove of the motor. Then, by penetrating the mounting hole with a bolt or other fastener and screwing it into the motor, the stable installation of the motor in the mounting seat can be achieved. The connection mode of the motor and the mounting seat is simple, and the production and use are convenient, which helps to reduce the cost investment of enterprises in the production and use of the motor support and is conducive to energy saving and cost reduction.

[0019] At the same time, with the slide fit of the protruding ring and the motor, the stable installation of the motor in the mounting seat can be further ensured.

[0020] On the other hand, the application also provides a cutter head lifting structure, which comprises any of the above-mentioned motor supports and further comprises:

[0021] A chassis is arranged above the mounting seat, and a power member for driving the mounting seat to lift is arranged on the chassis;

[0022] A through hole is arranged on the chassis and corresponds to the long tube; the long tube penetrates the through hole and is connected to the chassis along its own axis in a sliding manner, and the connection relationship between the long tube and the through hole is a tight fit connection.

[0023] A motor is fixedly arranged in the mounting seat, and its output shaft penetrates the long tube and is coaxially and detachably connected to the cutter head.

[0024] According to the cutter head lifting structure provided by the application, since the motor is fixedly arranged in the mounting seat and the output shaft of the motor penetrates the long tube, after the motor is installed on the corresponding chassis, neither the shell nor the output shaft of the motor contacts the chassis, thereby effectively reducing the probability of shaking of the motor and the output shaft relative to the chassis, and further effectively reducing the energy consumption of the motor, significantly prolonging the service life of the motor and the service life of the sealing member between the output shaft of the motor and the chassis, and being conducive to cost reduction and efficiency increase of enterprises.

[0025] In some embodiments, a sealing ring is coaxially arranged at the inner wall of the through hole; the inner and outer rings of the sealing ring abut against the long tube and the inner wall of the through hole, respectively.

[0026] According to the cutter head lifting structure provided by the application, the sealing ring is used to buffer the connection between the long tube and the through hole, so as to reduce the probability of shaking and damage of the long tube relative to the chassis, and help to prolong the service life of the chassis and the motor support.

[0027] In some embodiments, the bottom disc is provided with an abutting ring corresponding to the through hole, the abutting ring protrudes from the upper wall of the bottom disc, the sealing ring is coaxially arranged in the abutting ring, and the outer ring of the sealing ring abuts against the inner wall of the abutting ring.

[0028] The inner wall of the abutting ring is provided with a clamping block near the opening thereof, and a plurality of clamping blocks are uniformly and spacedly arranged around the axis of the abutting ring; the sealing ring is arranged between the clamping block and the upper wall of the bottom disc and abuts against the lower side of the clamping block and the upper wall of the bottom disc, respectively.

[0029] By means of the cutter head lifting structure provided in the application, the abutting ring and the clamping block structure are arranged to limit the sealing ring at the through hole, which helps to improve the installation convenience of the sealing ring, thereby reducing the production difficulty of the cutter head lifting structure and further promoting energy saving and cost reduction of enterprises.

[0030] In some embodiments, a positioning ring is shaped on the bottom disc and adapted to the shape of the mounting seat.

[0031] The mounting seat is embedded along the axis thereof into the positioning ring and is in sliding cooperation with the positioning ring.

[0032] By means of the cutter head lifting structure provided in the application, on the one hand, the positioning ring is used to position the mounting position of the motor support, which facilitates the assembly of the motor support on the bottom disc and helps to improve the production convenience of the cutter head lifting structure; on the other hand, the positioning ring is used to limit the displacement direction of the motor support, thereby improving the connection stability of the motor support relative to the bottom disc and effectively reducing the shaking of the motor support relative to the bottom disc, which helps to further improve the service life of the motor support and the motor therein.

[0033] On the other hand, the application further provides a mower comprising any of the cutter head lifting structures.

[0034] In actual application, the motor support is mounted on the bottom disc of the mower, the long tube penetrates the bottom disc from top to bottom and extends below the bottom disc, the motor is fixedly mounted on the motor support, the output shaft of the motor penetrates the long tube and is in transmission connection with the cutter head, thereby achieving the rotary driving of the cutter head; during the mowing operation, the power member drives the motor support to vertically lift relative to the bottom disc, the motor support drives the motor and the cutter head to synchronously lift, thereby achieving the lifting driving of the cutter head; the long tube vertically slides along the axis thereof relative to the bottom disc, thereby adjusting the length of the long tube and the output shaft of the motor, i.e. adjusting the lifting stroke of the motor.

[0035] In this way, since the motor is fixed in the motor support, and the output shaft of the motor is arranged in the long tube, the motor and the output shaft of the motor are not in direct contact with the bottom plate, thereby effectively reducing the probability of shaking of the motor and the output shaft of the motor relative to the bottom plate during the mowing process, thereby effectively prolonging the service life of the motor and the service life of the sealing element between the output shaft of the motor and the bottom plate, and effectively reducing the power consumption of the motor, which is beneficial to energy saving and efficiency improvement of enterprises.

[0036] In addition, since only the long tube and the output shaft of the motor in the long tube extend out of the bottom plate, compared with the scheme that the motor shell extends out of the bottom plate, the space below the bottom plate is more flat and larger, which is helpful to improve the grass clippings discharge efficiency and reduce the moving resistance of the mower, thereby further reducing the probability of shaking of the motor relative to the bottom plate; at the same time, the mowing efficiency is ensured, and the bottom plate is conveniently cleaned.

[0037] Compared with the prior art, the motor support, the cutter head lifting structure and the mower provided by the application have at least one of the following beneficial effects:

[0038] 1. In the application, the motor support is arranged to correspond to the output shaft of the motor to downwardly extend to form a long tube structure, so that after the motor is arranged in the motor support, the output shaft of the motor extends out after penetrating through the long tube, and the motor and the output shaft of the motor are not in direct contact with the application device, thereby effectively reducing the probability of shaking of the motor and the output shaft of the motor relative to the application device, thereby effectively reducing the power consumption of the motor, and significantly prolonging the service life of the motor and the service life of the sealing element between the output shaft of the motor and the application device, which is beneficial to cost reduction and efficiency improvement of enterprises.

[0039] In addition, when the motor support is applied to the field of mowers, in addition to the above effects, compared with the prior art that the motor shell extends out of the bottom plate to drive the cutter head to lift, the space below the bottom plate is more flat and larger, which is beneficial to the discharge of grass clippings, thereby being beneficial to improving the mowing efficiency and facilitating the cleaning of the bottom plate.

[0040] 2. In the application, a containing groove is arranged at one end of the long tube away from the mounting seat, so that the connecting end of the output shaft of the motor and the driving component is arranged in the long tube, thereby effectively reducing the probability of loosening, damage and failure of the connecting end of the output shaft of the motor and the driving component caused by external environment such as dust and moisture, and thereby helping to prolong the service life of the application device.

[0041] 3. The application is provided with a positioning groove and a convex ring structure, which effectively ensure the stable installation of the motor in the mounting seat, thereby further reducing the probability of shaking and damage of the motor relative to the application device, effectively prolonging the service life of the motor, and reducing the power consumption. BRIEF DESCRIPTION OF DRAWINGS

[0042] The above characteristics, technical features, advantages and implementation modes of the application will be further described in the following preferred embodiments in a clear and easy-to-understand manner in combination with the accompanying drawings.

[0043] Figure 1is the shaft measurement schematic diagram of the overall structure of the motor support mainly embodied by the embodiment of the application;

[0044] Figure 2 is the shaft measurement schematic diagram of the setting form of the accommodating groove mainly embodied by the embodiment of the application;

[0045] Figure 3 is the shaft measurement schematic diagram of the overall setting form of the cutter head lifting structure mainly embodied by the embodiment of the application;

[0046] Figure 4 is the shaft measurement schematic diagram of the motor appearance structure mainly embodied by the embodiment of the application;

[0047] Figure 5 is the explosion diagram of the motor output shaft and the long pipe cooperation relation mainly embodied by the embodiment of the application;

[0048] Figure 6 is the sectional view of the motor output shaft and the long pipe cooperation relation mainly embodied by the embodiment of the application;

[0049] Figure 7 is the shaft measurement schematic diagram of the overall structure of the chassis mainly embodied by the embodiment of the application;

[0050] Figure 8 is Figure 7 is the enlarged view of part A, mainly used for embodying the installation form of the sealing ring.

[0051] Explanation of reference signs:

[0052] 1, motor support; 11, mounting seat; 111, partition plate; 112, positioning groove; 113, mounting hole; 114, convex ring; 12, long pipe; 121, accommodating groove; 2, chassis; 21, through hole; 3, motor; 4, cutter head; 5, power piece; 51, screw rod; 52, power source; 53, guide piece; 6, sealing ring; 7, abutting ring; 71, clamping block; 8, positioning ring. DETAILED DESCRIPTION

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0054] For simplicity and concision of the drawings, only parts related to the present application are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is marked. In this text, "one" not only means "only one", but also means "more than one".

[0055] In production and life, as a common driving tool for various machines and appliances, the output shaft of the motor is usually subjected to a large resistance and often generates a certain vibration during use. For example, the power motor applied to the lawn mower. At present, in order to reduce production cost, the power motor of the lawn mower is mostly directly installed on the chassis of the lawn mower, and the output shaft thereof penetrates the chassis and is in transmission connection with the cutter head on which the blades are installed. During use, the output shaft of the power motor rotates to drive the cutter head and the blades thereon to rotate synchronously, thereby realizing the mowing action. For this reason, the inventors believe that the resistance to the output shaft of the power motor is usually large during the mowing action, and since the connection stiffness between the power motor and the chassis is usually poor, the power motor often slightly shakes relative to the chassis, which not only easily damages the sealing element between the output shaft of the power motor and the chassis, but also shortens the service life of the motor and increases the energy consumption of the motor.

[0056] For this reason, with reference to the drawings of the specification Figures 1 to 3 In one embodiment, a motor support is provided, which comprises a mounting seat 11 and a long tube 12 integrally formed below the mounting seat 11, wherein the mounting seat 11 is adapted to the shape of the motor 3 and is used to fix the motor 3, and the long tube 12 is provided corresponding to the output shaft of the motor 3 and is used to penetrate the output shaft of the motor 3 after the motor 3 is installed on the mounting seat 11.

[0057] In actual application, the motor 3 is stably installed on the mounting seat 11, and the output shaft thereof penetrates the long tube 12 and extends out; when the motor 3 is installed on the application device, the motor support 1 is fixedly connected with the application device, the long tube 12 thereof penetrates the corresponding wall surface of the application device and extends out, and the output shaft of the motor 3 penetrates the long tube 12 and is connected with the driven component of the application device. Since the motor 3 and the output shaft thereof do not directly contact the application device, the probability of the motor 3 and the output shaft thereof directly shaking relative to the application device is effectively reduced, thereby effectively reducing the energy consumption of the motor 3, and significantly prolonging the service life of the motor 3 and the service life of the sealing element between the output shaft of the motor 3 and the application device, which is beneficial to the enterprise to reduce cost and increase benefit.

[0058] In one embodiment, based on the above embodiment, specifically, with reference to Figures 1 to 3In this embodiment of the present application, the motor 3 shell is in a cylindrical structure as a whole, and the mounting seat 11 is adapted to the shape of the motor 3 and is provided as a partial cylindrical structure. Of course, in the embodiments of the present application, the mounting seat 11 can also be provided in other shapes, as long as it can be adapted to the shape of the corresponding motor 3 and facilitate the installation of the motor 3. In addition, the inner wall of the mounting seat 11 is uniformly and spacedly provided with a plurality of partitions 111 around the axis thereof. During assembly, the side of each of the plurality of partitions 111 away from the mounting seat 11 abuts against the corresponding position of the outer wall of the motor 3. The partitions 111 are used to support and stabilize the motor 3 and promote heat dissipation of the motor 3, which helps to further prolong the service life of the motor 3.

[0059] Referring to Figures 1 to 4 In this embodiment of the present application, the bottom wall of the mounting seat 11 is concave downward and forms a positioning groove 112, which is adapted to the shape of the motor 3. At the same time, a plurality of mounting holes 113 are formed on the bottom wall of the mounting seat 11 around the axis thereof. A protruding ring 114 is formed on the bottom wall of the mounting seat 11 corresponding to the periphery of each of the mounting holes 113. Each of the protruding rings 114 protrudes upward from the bottom wall of the mounting seat 11 to adapt to the shape of the motor 3. The mounting holes 113 are used to adapt to the connecting members for detachably connecting the mounting seat 11 and the motor 3. During assembly, the motor 3 is inserted into the mounting seat 11 along the axis thereof, and the lower end portion thereof slides along the inner wall of the positioning groove 112 in the axial direction of the mounting seat 11. The protruding ring 114 is inserted into the bottom wall of the motor 3 in the axial direction of the mounting seat 11 and slides relative to the motor 3 until the bottom surface of the motor 3 abuts against the bottom wall of the mounting groove. Then, the connecting members such as bolts are inserted into the mounting holes 113 from bottom to top and screwed into the motor 3 to achieve stable installation of the motor 3 in the mounting seat 11. The installation method is simple and convenient to operate.

[0060] In addition, the one end of the long tube 12 away from the mounting seat 11 is provided with a receiving groove 121. Specifically, referring to Figure 2 The receiving groove 121 is in communication with the opening of the one end of the long tube 12 away from the mounting seat 11, i.e., the receiving groove 121 is formed at the end of the long tube 12 and has an inner diameter greater than that of the long tube 12. During use, the receiving groove 121 is used to adapt to the shape of the to-be-driven component and fix the connection point between the output shaft of the motor 3 and the to-be-driven component, so as to reduce the probability of damage, loosening and failure of the connection end between the output shaft of the motor 3 and the to-be-driven component caused by external environment such as dust and moisture, thereby prolonging the service life of the application device.

[0061] Next, the technical solution of the present application will be further described by taking the application of the motor support 1 in the cutter head lifting structure of a mower as an example. In one embodiment, referring to Figures 1 to 5The application provides a cutter head lifting structure, which comprises the motor support 1 in any of the above embodiments, and further comprises a base plate 2, a motor 3 and a cutter head 4, wherein the base plate 2 is in a substantially planar plate structure and is arranged horizontally, and a through hole 21 is formed in the base plate 2 and corresponds to the long tube 12; the mounting seat 11 is vertically arranged above the base plate 2, and the long tube 12 penetrates the through hole 21 from top to bottom and is in sliding fit with the base plate 2 along the axis of the long tube 12. Of course, in the embodiment of the application, the long tube 12 is in tight fit connection with the through hole 21, so that the connection stability of the motor support 1 relative to the base plate 2 is ensured, and the relative shaking of the two is reduced. The motor 3 is fixedly arranged in the mounting seat 11, and the output shaft of the motor 3 penetrates the long tube 12 from top to bottom and is coaxially and detachably connected with the cutter head 4. In addition, the base plate 2 is further provided with a power component 5 for driving the mounting seat 11 to lift.

[0062] It is worth noting that, with reference to Figure 6 In the embodiment of the application, the output shaft of the motor 3 is in gap fit with the long tube 12, so that the shaking of the output shaft of the motor 3 relative to the long tube 12 is reduced, the probability of damage of the motor 3 is reduced, and the rotating resistance of the shaft of the motor 3 is reduced.

[0063] When the mowing operation is performed, the power component 5 drives the motor support 1 to vertically lift relative to the base plate 2, the motor support 1 drives the motor 3 and the cutter head 4 to synchronously lift, so that the lifting driving of the cutter head 4 is realized; the output shaft of the motor 3 rotates to drive the cutter head 4 to rotate, the cutter head 4 drives the blades on the cutter head 4 to rotate at high speed, and the mowing operation is realized.

[0064] In this way, since the motor 3 is fixedly arranged in the motor support 3, and the output shaft of the motor 3 is arranged in the long tube 12, during actual operation, the motor 3 and the output shaft thereof are not in contact with the base plate 2, the shaking of the motor 3 and the output shaft thereof relative to the base plate 2 is reduced, the service life of the sealing element between the output shaft of the motor 3 and the base plate 2 is effectively prolonged, the service life of the motor 3 is prolonged, the energy consumption of the motor 3 is reduced, and the energy saving and efficiency increasing of enterprises are promoted. Meanwhile, only the long tube 12 and the output shaft of the motor 3 in the long tube 12 are arranged to protrude from the base plate 2, compared with the prior art in which the bellows are arranged below the base plate 2 to accommodate the motor 3 and the cutter head 4 lifting execution mechanism is arranged below the base plate 2, the lower part of the base plate 2 is more flat, the space is larger, and the grass clippings discharge efficiency is higher, which is helpful to reduce the moving resistance of the mower, improve the mowing efficiency, and facilitate the cleaning of the base plate 2.

[0065] Further, with reference to Figures 6 to 8 In order to ensure the stable connection of the motor support 1 and the base plate 2, in this embodiment of the application, a sealing ring 6 is coaxially arranged at the inner wall of the through hole 21, and after assembly, the inner and outer rings of the sealing ring 6 are tightly arranged against the outer wall of the long tube 12 and the inner wall of the through hole 21, so that the probability of relative shaking and damage of the two is reduced. Of course, in the embodiment of the application, other setting forms can also be adopted, and the application does not make specific limitation in this respect.

[0066] With reference to Figures 5 to 8 , in this embodiment of the application, in order to realize stable arrangement of the sealing ring 6, an abutting ring 7 is formed on the bottom disc 2 corresponding to the through hole 21, specifically, the abutting ring 7 is formed on the side of the through hole 21 and protrudes from the upper wall of the bottom disc 2. The sealing ring 6 is coaxially arranged in the abutting ring 7, and the outer ring of the sealing ring 6 abuts against the inner wall of the abutting ring 7. Figure 4 With reference to Figure 4 , the inner wall of the abutting ring 7 is provided with a clamping block 71 near the opening thereof. A plurality of clamping blocks 71 are uniformly and spacedly arranged around the axis of the abutting ring 7. The bottom surface of each clamping block 71 is horizontally arranged, and a guide sliding surface is formed on the upper side of the clamping block 71. During assembly, the sealing ring 6 is coaxially embedded in the abutting ring 7, and the sealing ring 6 is pressed, so that the sealing ring 6 slides along the guide sliding surface to the position between the clamping block 71 and the upper wall of the bottom disc 2, and abuts against the upper wall of the bottom disc 2 and the lower bottom surface of the clamping block 71, respectively, thereby realizing installation of the sealing ring 6 at the through hole 21. The installation structure of the sealing ring 6 is simple, and the production and assembly are convenient, thereby effectively reducing the production cost of the enterprise.

[0067] Of course, in the embodiments of the application, other forms of installation of the sealing ring 6 can also be provided, for example, a limiting groove is formed on the inner wall of any one end of the through hole 21, the sealing ring 6 is arranged in the limiting groove, and a limiting block or the like is used to limit the sealing ring 6 on the inner wall of the through hole 21. Of course, the installation form of the sealing ring 6 is not limited to this, and the sealing ring 6 can also be installed between the bottom disc 2 and the long tube 12 by embedding, cladding and the like. The specific installation form of the sealing ring 6 should not be regarded as a limitation on the protection scope of the application.

[0068] With reference to Figure 6 and Figure 7 In order to reduce the probability of displacement of the motor support 1 relative to the bottom disc 2 and improve the installation stability of the motor support 1 on the bottom disc 2, the bottom disc 2 is further provided with a positioning ring 8. The positioning ring 8 is matched with the outer shape of the mounting seat 11 and protrudes from the upper wall of the bottom disc 2. During use, the mounting seat 11 is embedded in the positioning ring 8 along the axis thereof and is in sliding cooperation with the inner wall of the positioning ring 8 during the lifting process of the motor support 1.

[0069] With reference to Figure 3 , Figure 5 and Figure 6In the embodiment of the application, the power component 5 comprises a lead screw 51, a power source 52 and a guide component 53, wherein the power source 52 is configured to drive the lead screw 51 to rotate, and the guide component 53 is configured to guide the lifting displacement of the motor support 1. Specifically, a support frame is further fixedly arranged above the chassis 2, and a connecting plate is further fixedly arranged on both sides of the motor support 1. The lead screw 51 is vertically arranged, penetrates through the motor support 1 and is threadedly connected with the motor support 1, and both ends of the lead screw 51 extend into the support frame and the chassis 2 and are rotatably connected with the support frame and the chassis 2. In use, the power source 52 drives the lead screw 51 to rotate around the axis of the lead screw 51, and under the cooperation of the guide component 53, the motor support 1 is lifted vertically relative to the base due to the threaded cooperation between the lead screw 51 and the motor support 1, and the motor support 1 drives the motor 3 and the cutter head 4 to synchronously lift.

[0070] In the embodiment of the application, the power source 52 comprises a corresponding driving motor 3 and a gear set, and the guide component 53 is arranged as a guide rod penetrating through the connecting plate. Of course, in other embodiments of the application, the power source 52 and the guide component 53 can also be arranged in other forms, and the application does not make specific limitations in this regard, and the specific arrangement form of the power component 5 should not be regarded as a limitation on the protection scope of the application.

[0071] In addition, in one embodiment, a mower is also provided, which comprises the cutter head lifting structure according to any one of the above embodiments.

[0072] The implementation principle of the embodiment of the application is that the motor 3 support is extended downward at the position corresponding to the output shaft of the motor 3 to form a long tube 12 structure, so that the output shaft of the motor 3 extends out after penetrating through the long tube 12 after the motor 3 is arranged in the motor 3 support. Neither the motor 3 nor the output shaft of the motor 3 directly contacts the chassis 2 of the mower, which effectively reduces the probability of shaking of the motor 3 and the output shaft of the motor 3 relative to the chassis 2, thereby effectively reducing the energy consumption of the motor 3, and significantly prolonging the service life of the motor 3 and the service life of the sealing element between the output shaft of the motor 3 and the application device. Moreover, compared with the prior art in which the casing of the motor 3 extends out of the chassis 2 to drive the cutter head 4 to lift, the bottom of the chassis 2 is more flat and has a larger space, which is beneficial to the discharge of grass clippings, thereby being conducive to improving the mowing efficiency and facilitating the cleaning of the chassis 2. In addition, the corresponding cutter head lifting structure and the motor support 1 are simple in whole, which is convenient for production and use, low in cost and beneficial to the enterprises to reduce costs and increase benefits.

[0073] It should be noted that the above embodiments can be freely combined as needed. The above description is only the preferred embodiments of the application, and it should be pointed out that for ordinary skilled persons in the technical field, several improvements and refinements can be made without departing from the principles of the application, and these improvements and refinements should also be regarded as the protection scope of the application.

Claims

1. An electric machine support, characterized in that, Comprising: a mounting seat, which is adapted to the shape of the motor and is used to fix the motor; a long tube, which is integrally formed below the mounting seat and is arranged corresponding to the output shaft of the motor, and is used to pass the output shaft of the motor after the motor is installed on the mounting seat.

2. The motor support according to claim 1, wherein: a receiving groove is arranged at the end of the long tube away from the mounting seat and is communicated with the opening of the end of the long tube away from the mounting seat, and the receiving groove is used to adapt to the shape of the driven component and fix the connection point of the output shaft of the motor and the driven component.

3. The motor support according to claim 1 or 2, wherein: a plurality of partitions are arranged on the inner wall of the mounting seat and are uniformly spaced around the axis of the mounting seat, and the side of the partitions away from the mounting seat abuts against the outer wall of the motor.

4. The motor support according to claim 1 or 2, wherein: a positioning groove is formed on the bottom wall of the mounting seat and is adapted to the shape of the motor.

5. The motor support according to claim 1 or 2, wherein: a mounting hole is arranged on the bottom wall of the mounting seat and is used to detachably connect the mounting seat and the motor; a convex ring is formed on the bottom wall of the mounting seat corresponding to the periphery of the mounting hole, the convex ring protrudes from the bottom wall of the mounting seat and is adapted to the shape of the motor to embed the motor along the axis of the mounting seat and slide with the motor.

6. A cutterhead lifting structure, characterized by, The motor support according to any one of claims 1-5, further comprising: a base plate, the mounting seat is vertically arranged above the base plate, and the base plate is provided with a power member for driving the mounting seat to ascend and descend; a through hole is arranged on the base plate and corresponds to the long tube; the long tube penetrates through the through hole and is connected with the base plate along the axis of the long tube, and the connection between the long tube and the through hole is a tight fit connection; a motor is fixedly installed in the mounting seat, and the output shaft of the motor penetrates through the long tube and is detachably connected with the cutter head coaxially.

7. The cutter head lifting structure according to claim 6, wherein: a sealing ring is coaxially arranged at the inner wall of the through hole; the inner and outer rings of the sealing ring abut against the inner wall of the long tube and the through hole respectively.

8. The cutter head lifting structure according to claim 7, wherein: a abutting ring is formed on the base plate corresponding to the through hole, the abutting ring protrudes from the upper wall of the base plate, the sealing ring is coaxially arranged in the abutting ring, and the outer ring of the sealing ring abuts against the inner wall of the abutting ring; a clamping block is arranged near the opening of the inner wall of the abutting ring, and a plurality of clamping blocks are uniformly and spacedly arranged around the axis of the abutting ring; the sealing ring is arranged between the clamping block and the upper wall of the base plate and abuts against the lower side of the clamping block and the upper wall of the base plate respectively.

9. The cutter head lifting structure according to claim 7 or 8, wherein: a positioning ring is adapted to the shape of the mounting seat and is formed on the base plate; the mounting seat is embedded in the positioning ring along the axis of the mounting seat and is in sliding fit with the positioning ring.

10. A lawnmower characterised in that, The cutter head lifting structure according to any one of claims 6-9.

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