Hovering gear shifting device and snow sweeper

Abstract

The utility model discloses a hovering gear shifting device which comprises an operation unit, a gear shifting unit and a control unit. The operation unit is provided with at least two grooves / holes used for hovering gears with different configurations. The mounting seat is arranged on the machine shell, and the operation unit is rotatably connected to the mounting seat; the reset unit is fixed on the mounting seat, the groove of the operation unit is in contact with the reset unit, the operation unit can be suspended at a certain gear after the operation unit is subjected to the reset force of the reset unit, and after the operation unit overcomes the reset force of the reset unit during rotation, the reset unit is in contact with the reset unit. And the operation unit can be switched to other gears.

Description

Technical Field

[0001] The utility model relates to the field of garden machinery, in particular to a hovering shift device, a snow sweeper and a lawn mower equipped with the hovering shift device, etc. Background Art

[0002] As an important device for snow removal in winter, a snow sweeper generally includes a machine body and a snow discharge pipe. A snow sweeper is a mechanical tool for snow removal and has a wide range of applications in real life. The greatest advantage of a snow sweeper is that no matter what form of snow (floating snow, compacted snow, ice) it removes, it does not need to use salt or snow melting agent, can adapt to different road conditions, and can use different mechanisms to operate on any form of ice and snow. Moreover, it can achieve the effect of showing the black road surface at one time, does not damage the marking line, does not damage the road surface, and the snow removal efficiency is over 95%. We can use a high-density and high-elastic steel wire roller brush, which has a good ice removal effect, can remove thin ice and thin compacted snow on the road surface, and has a fast snow removal speed; we can also use an asymmetric and efficient snow pusher; at present, most of the hand-pushed snow sweepers directly install rollers on both sides of the output shaft of the drive. The total weight of such snow sweepers is mostly within 35 kg (such as 20 - 35 kg). The appearance of the snow sweeper has greatly alleviated people's living difficulties in bad weather and is a very applicable garden machinery tool. However, there are many deficiencies in the snow sweepers on the domestic and foreign markets at present. Among them, the most urgent problem to be solved is that the operation handle (i.e., the operation unit), especially the manual operation handle, needs to rotate relative to the machine shell in its movement trajectory. However, as a garden machinery, especially the models powered by gasoline engines, a large amount of vibration will be generated during operation. In extreme cases, it may even shake the operation handle out of the original gear, bringing unpredictable consequences and posing a great hidden danger to the personal safety of the operator. How to solve the fixing problem of the operation handle on the machine shell has always been a difficult problem concerned by the practitioners in this field. It is a difficult problem that the R & D personnel need to urgently break through to realize that the operation handle can stably hover at a certain gear without affecting the smoothness of the operation. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above-mentioned requirements, and provide a stable and reliable hovering shift device, so that the operator can operate the snow sweeper and the lawn mower more comfortably and greatly improve the safety factor during the operation process.

[0004] The advantage of the present utility model is to provide a hovering shift device, which includes: an operation unit having at least two slots / holes for configuring different gears during hovering; a mounting seat disposed on the housing, and the operation unit is rotatably connected to the mounting seat; a restoring unit fixed to the mounting seat, and the slot of the operation unit is in contact with the restoring unit. After the operation unit is subjected to the restoring force of the restoring unit, the operation unit can hover at a certain gear position. When the operation unit rotates and overcomes the restoring force of the restoring unit, the operation unit can be rotated to other gears. Due to the damping provided by the restoring unit, the operation unit can completely overcome the influence of slipping caused by ordinary or accidental vibrations, greatly improving the safety and stability of the operation.

[0005] The advantage of the present utility model is to provide a hovering shift device. A plurality of gear slots / holes are arranged in an array along the swinging direction of the handle portion on the damping adjustment disk portion, so that multiple gear adjustment options can be provided to the operator, increasing the free space of the operation and improving the snow-clearing efficiency of the snow sweeper.

[0006] The advantage of the present utility model is to provide a hovering shift device. An anti-slip shell is sleeved outside the handle portion, and the anti-slip shell increases the friction between the operator's hand and the operation unit, avoiding accidental sliding in the hand area and improving the stability when operating the snow machine to shift gears and change speeds.

[0007] The advantage of the present utility model is to provide a hovering shift device. The shaft connection portion is rotatably shaft-connected to the mounting seat, and the handle portion and the damping adjustment disk portion are respectively located on both sides of the shaft connection portion. Due to the coaxial relationship, the loss of force in the handle portion can be reduced, and the smoothness of the operator operating the snow machine can be improved.

[0008] The advantage of the present utility model is to provide a hovering shift device. The elastic element is squeezed in the receiving cavity, and both ends of the elastic element respectively abut against the spherical element and the wall of the receiving cavity. The spherical element abuts against the operation unit. The elastic element is a spring, and the spherical element is a metal ball. Springs and metal balls are conventional parts, so that the cost of the whole device can be reduced.

[0009] The advantage of the present utility model is to provide a hovering shift device. The hovering shift device further includes a damping unit fixed to the mounting seat, and the damping unit is arranged in parallel with the restoring unit. In this way, the newly added damping unit outside the original restoring unit can share the working load of the spring, extend the service life of the spring, and at the same time, also increase the resistance for the operator to overcome the end of the operation unit, further enhancing the gear feeling during the shifting process.

[0010] The advantage of the present utility model is to provide a snow sweeper, and the snow sweeper includes the hovering shifting device of the present utility model. In this way, the stability of the gear during snow sweeping can be enhanced, the adjustment is smoother, and the freedom of snow sweeping is greatly improved.

[0011] The present utility model further provides a hovering shifting device, and the hovering shifting device includes:

[0012] A hovering shifting device includes: an operating unit, the operating unit having at least two slots / holes for hovering and configuring different gears; a mounting seat, the mounting seat being provided on the machine housing, and the operating unit being rotatably connected to the mounting seat; a restoring unit, the restoring unit being fixed to the mounting seat, the slot of the operating unit being in contact with the restoring unit, after the operating unit receives the restoring force of the restoring unit, the operating unit hovers at a certain gear position, and after the operating unit rotates and overcomes the restoring force of the restoring unit, the operating unit can be rotated to other gears.

[0013] According to an embodiment of the present utility model, the operating unit has a handle part, a shaft connecting part, and a damping adjusting disk part. The shaft connecting part is rotatably shaft-connected to the mounting seat, the handle part and the damping adjusting disk part are respectively located on both sides of the shaft connecting part, and a plurality of gear slots / holes are arranged in an array along the swinging direction of the handle part on the damping adjusting disk part.

[0014] According to an embodiment of the present utility model, an anti-slip shell is sleeved outside the handle part.

[0015] According to an embodiment of the present utility model, the mounting seat includes a first fixing unit and a second fixing unit. The first fixing unit is used to fix the operating unit, the second fixing unit is used to mount the restoring unit, and the first fixing unit and the second fixing unit can be fixed to the machine housing in an integrally formed manner or in a detachable manner.

[0016] According to an embodiment of the present utility model, the restoring unit includes an elastic element and a spherical element. The mounting seat includes a first fixing unit and a second fixing unit. The first fixing unit is used to fix the operating unit, the second fixing unit is used to mount the restoring unit. The second fixing unit has a receiving cavity, the receiving cavity has a receiving cavity wall, the elastic element is squeezed in the receiving cavity, two ends of the elastic element respectively abut against the spherical element and the receiving cavity wall, and the spherical element abuts against the operating unit.

[0017] According to an embodiment of the present utility model, the elastic element is a spring and the spherical element is a metal ball.

[0018] According to an embodiment of the present utility model, the first fixing unit of the mounting seat includes a first fixing portion and a second fixing portion. The first fixing portion and the second fixing portion each extend an extension shaft in the opposite direction. The operating unit is located between the first fixing portion and the second fixing portion. The operating unit has a handle portion, a shaft connecting portion, and a damping adjustment disc portion. The shaft connecting portion is rotatably shaft-connected to the extension shaft.

[0019] According to an embodiment of the present utility model, the mounting seat includes a first fixing unit and a second fixing unit. The first fixing unit is used to fix the operating unit, and the second fixing unit is used to install the return unit. The first fixing unit and the second fixing unit can be fixed to the casing in an integrally formed manner or in a detachable manner. The first fixing unit of the mounting seat includes a first fixing portion and a second fixing portion. The first fixing portion and the second fixing portion each extend an extension shaft in the opposite direction. The operating unit is located between the first fixing portion and the second fixing portion. The operating unit has a handle portion, a shaft connecting portion, and a damping adjustment disc portion. The shaft connecting portion is rotatably shaft-connected to the extension shaft. The return unit includes an elastic element and a spherical element. The second fixing unit has a receiving cavity with a receiving cavity wall. The elastic element is squeezed in the receiving cavity. Two ends of the elastic element respectively abut against the spherical element and the receiving cavity wall. The spherical element abuts against the operating unit.

[0020] According to an embodiment of the present utility model, the hover shift device further includes a damping unit. The damping unit is fixed to the mounting seat. The damping unit is arranged in parallel with the return unit. Two sides of the damping unit are respectively connected to the mounting seat and the return unit. After the operating unit overcomes the restoring force of the return unit and the damping unit during rotation, the operating unit can be rotated to other gears.

[0021] According to an embodiment of the present utility model, a snow sweeper includes: a frame; a traveling unit installed at the bottom end of the frame; a handrail unit fixedly installed at the first end of the frame; a snow sweeping unit installed at the second end of the frame. The snow sweeping unit further includes a power execution portion and the hover shift device as described above. The hover shift device is electrically connected to the power execution portion. During the rotation process, the hover shift device transmits different signals to the power execution portion through a potentiometer, and then outputs different powers.

[0022] The above and other features and advantages of the exemplary embodiments of the present utility model will become more obvious from the following detailed description in conjunction with the drawings. The description and the drawings are only for exemplary purposes and do not limit the scope of the present utility model in any way. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the application of the hovering shift device according to the first preferred embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the installation position of the hovering shift device according to the first preferred embodiment of the present invention.

[0025] Figure 3 It is a cross-sectional view of the hovering shift device according to the first preferred embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the hovering shift device according to the first preferred embodiment of the present invention.

[0027] Figure 5 It is a schematic diagram of the operation unit according to the first preferred embodiment of the present invention.

[0028] Figure 6 It is a partial enlarged view of the operation unit according to the first preferred embodiment of the present invention.

[0029] Figure 7 It is a schematic diagram of an initial movement position according to the first preferred embodiment of the present invention.

[0030] Figure 8 It is a schematic diagram of an intermediate movement position according to the first preferred embodiment of the present invention

[0031] Figure 9 It is a schematic diagram of an end movement position according to the first preferred embodiment of the present invention

[0032] Figure 10 It is a cross-sectional view of the hovering shift device according to the second preferred embodiment of the present invention.

[0033] Figure 11 It is a schematic diagram of a snow sweeper according to the first preferred embodiment of the present invention. Detailed Description of the Embodiment

[0034] The embodiments of the present application will be described in detail below. The examples of the embodiments of the present application are shown in the drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0035] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the technical field to which this application belongs. In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0036] As Figure 1 shown, the hover shift device A is at the control panel C of the vehicle body B. The hover shift device A is electrically connected to the motor D. By operating the hover shift device A, different gears can be achieved. After adjusting through different gears, signals are transmitted to the motor D, thereby playing a role in adjusting the rotation speed of the motor D.

[0037] As Figure 2 shown, the hover shift device A is located near the control panel of the vehicle.

[0038] As Figures 2 - 8 shown, a hover shift device A includes: an operation unit 1, the operation unit 1 having at least two slots 130 for configuring different gears during hovering; the slots 130 can also be equivalently replaced by holes. A mounting seat 2, the mounting seat 2 being provided on the housing, the operation unit 1 being rotatably connected to the mounting seat 2; a restoring unit 3, the restoring unit 3 being fixed to the mounting seat 2, the slots 130 of the operation unit 1 being in contact with the restoring unit 3, the operation unit 1 being subject to the restoring force of the restoring unit 3, the operation unit 1 being able to hover at a certain gear position, and after the operation unit 1 rotates to overcome the restoring force of the restoring unit 3, the operation unit 1 can rotate to other gears.

[0039] The operation unit 1 has a handle part 11, a shaft connection part 12, and a damping adjustment disc part 13. The shaft connection part 12 is rotatably shaft-connected to the mounting base 2. The handle part 11 and the damping adjustment disc part 13 are respectively located on both sides of the shaft connection part 12. A plurality of gear positions grooves 130 are arranged in an array along the swinging direction of the handle part 11 on the damping adjustment disc part 13. Due to the damping provided by the return unit 3, the operation unit 1 can completely overcome the influence of shifting caused by ordinary or accidental vibrations, greatly improving the safety of operation. A plurality of gear positions grooves 130 are arranged in an array along the swinging direction of the handle part 11 on the damping adjustment disc part 13, so that multiple gear adjustment options can be provided to the operator, increasing the free space of operation and improving the snow-clearing efficiency of the snow sweeper. An anti-slip shell 110 is sleeved outside the handle part 11.

[0040] As Figure 3 shown, the mounting base 2 includes a first fixing unit 21 and a second fixing unit 22. The first fixing unit 21 is used to fix the operation unit 1, and the second fixing unit 22 is used to mount the return unit 3. The first fixing unit 21 and the second fixing unit 22 can be fixed to the machine shell in an integrally formed manner or in a detachable manner. In this embodiment, the first fixing unit 21 is extended from the mounting base 2 in an integrally formed manner, and the second fixing element 22 is connected to the machine shell by an assembly method.

[0041] The return unit 3 includes an elastic element 31 and a spherical element 32. The first fixing unit 21 is used to fix the operation unit 1, and the second fixing unit 22 is used to mount the return unit 3. The second fixing unit 22 has a receiving cavity 220. The elastic element 31 is squeezed in the receiving cavity 220. Two ends of the elastic element 31 respectively abut against the spherical element 32 and the wall of the receiving cavity 220, and the spherical element 32 abuts against the operation unit 1. The elastic element 31 is a spring, and the spherical element 32 is a metal ball.

[0042] It is worth mentioning that the opening size of the gear position groove 130 is greater than or equal to the size of the spherical element 32. In this way, during the reciprocating movement of the metal ball, it can easily slide into the gear position groove 130. When the groove 130 is a hole structure, the opening size of the hole is smaller than the size of the metal ball, so that the metal ball will not slide out through the hole.

[0043] The first fixing unit 21 of the mounting base 2 includes a first fixing part 210 and a second fixing part 211. The first fixing part 210 and the second fixing part 211 respectively extend out an extension shaft in the opposite direction. The operation unit 1 is located between the first fixing part 210 and the second fixing part 211.

[0044] Figures 7 - 9 is a demonstration of a gear shifting process. In Figure 7 , there is a spherical element 32 located in the groove 130 of the damping adjustment disc portion 13 of the operation unit 1. At this time, the hovering gear shifting device A is in the first gear. In Figure 8 , the operation unit 1 rotates to a position halfway between adjacent gears, and the spherical element 32 leaves the groove 130. At this time, the operation unit 1 is in a position where it can be easily toggled. In Figure 9 , the spherical element 32 slides into the adjacent groove 130. At this time, the hovering gear shifting device A is in the second gear. It is worth mentioning that when the force applied during the gear shifting process is large enough, the operation unit 1 can also continuously pass through N such grooves 130 to reach another gear.

[0045] Figure 10 is a cross-sectional view of a hovering gear shifting device according to the second preferred embodiment of the present invention. The hovering gear shifting device 1A further includes a damping unit 4A. The damping unit 4A is fixed to the mounting seat 2. The damping unit 4A is arranged in parallel with the return unit 3A. Both sides of the damping unit 4A are respectively connected to the mounting seat 2 and the return unit 3A. After the operation unit 1A overcomes the return forces of the return unit 3A and the damping unit 4A during rotation, the operation unit 1A can be rotated to other gears. The mounting seat 2 is similar to that of the first preferred embodiment, and is omitted in the figure.

[0046] Figure 11 is a schematic diagram of a snow sweeper according to the first preferred embodiment of the present invention. A snow sweeper includes: a frame H; a traveling unit I, the traveling unit I is installed at the bottom end of the frame H; a handrail unit J, the handrail unit J is fixedly installed at the first end of the frame H, a snow sweeping unit K, the snow sweeping unit K is installed at the second end of the frame H. The snow sweeping unit K further includes a power execution part and the hovering gear shifting device A as described above. The hovering gear shifting device A is electrically connected to the power execution part. During rotation, the hovering gear shifting device A transmits different signals to the power execution part through a potentiometer, and then outputs different powers.

Claims

1. A hover shift device, characterized in that, Comprising: An operation unit having at least two slots / holes for configuring different gears during hovering; A mounting base provided on the housing, and the operation unit is rotatably connected to the mounting base; A restoring unit fixed to the mounting base, the slot of the operation unit is in contact with the restoring unit, and the operation unit is subject to the restoring force of the restoring unit, so that the operation unit can hover at a certain gear position. After the operation unit overcomes the restoring force of the restoring unit during rotation, the operation unit can be rotated to other gears.

2. The hover shift device according to claim 1, wherein: The operation unit has a handle part, a shaft connecting part, and a damping adjustment disc part. The shaft connecting part is rotatably shaft-connected to the mounting base. The handle part and the damping adjustment disc part are respectively located on both sides of the shaft connecting part. A plurality of gear slots / holes are arranged in an array along the swinging direction of the handle part on the damping adjustment disc.

3. The hover shift device according to claim 2, characterized in that: A non-slip shell is sleeved outside the handle part.

4. The hovering shift device according to claim 1, characterized in that: The mounting base includes a first fixing unit and a second fixing unit. The first fixing unit is used to fix the operation unit, and the second fixing unit is used to mount the restoring unit. The first fixing unit and the second fixing unit can be fixed to the housing in an integrally formed manner or in a detachable manner.

5. The hover shift device according to claim 1, wherein: The restoring unit includes an elastic element and a spherical element. The mounting base includes a first fixing unit and a second fixing unit. The first fixing unit is used to fix the operation unit, and the second fixing unit is used to mount the restoring unit. The second fixing unit has a receiving cavity with a receiving cavity wall. The elastic element is squeezed in the receiving cavity, and both ends of the elastic element respectively abut against the spherical element and the receiving cavity wall, and the spherical element abuts against the operation unit.

6. The hover shift device according to claim 5, wherein: The elastic element is a spring, and the spherical element is a metal ball.

7. The hovering shift device according to claim 4, characterized in that: The first fixing unit of the mounting base includes a first fixing part and a second fixing part. The first fixing part and the second fixing part each extend an extending shaft in an opposite direction. The operation unit is located between the first fixing part and the second fixing part. The operation unit has a handle part, a shaft connecting part, and a damping adjustment disc part. The shaft connecting part is rotatably shaft-connected to the extending shaft.

8. The hover shift device according to claim 3, wherein: The mounting base includes a first fixing unit and a second fixing unit. The first fixing unit is used to fix the operating unit, and the second fixing unit is used to mount the restoring unit. The first fixing unit and the second fixing unit are fixed to the housing in an integrally formed manner or in a detachable manner. The first fixing unit of the mounting base includes a first fixing portion and a second fixing portion. The first fixing portion and the second fixing portion each extend an extension shaft in the opposite direction. The operating unit is located between the first fixing portion and the second fixing portion. The operating unit has a handle portion, a shaft connecting portion, and a damping adjustment disc portion. The shaft connecting portion is rotatably shaft-connected to the extension shaft. The restoring unit includes an elastic element and a spherical element. The second fixing unit has a receiving cavity with a receiving cavity wall. The elastic element is squeezed in the receiving cavity, and the two ends of the elastic element respectively abut against the spherical element and the receiving cavity wall. The spherical element contacts the operating unit.

9. The hover shift device according to claim 1, wherein: The hovering shift device further includes a damping unit. The damping unit is fixed to the mounting base. The damping unit is arranged in parallel with the restoring unit. The two sides of the damping unit are respectively connected to the mounting base and the end of the restoring unit. After the operating unit overcomes the restoring forces of the restoring unit and the damping unit during rotation, the operating unit can be rotated to other gears.

10. A snow sweeper, characterized in that, Comprising: A frame; A traveling unit, which is installed at the bottom end of the frame; An armrest unit, which is fixedly installed at the first end of the frame; A snow sweeping unit, which is installed at the second end of the frame. The snow sweeping unit further includes a power execution portion and the hovering shift device according to any one of claims 1-9. The hovering shift device is electrically connected to the power execution portion. During rotation, the hovering shift device transmits different signals to the power execution portion through a potentiometer, and then outputs different powers.

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