CN117227463A - Wheel type tool and travelling mechanism - Google Patents

Abstract

The application relates to the technical field of wheel type tools, and provides a wheel type tool and a travelling mechanism, wherein the wheel type tool comprises a frame, a working unit, a driving unit, travelling wheels and a transmission system, and the working unit is connected with the frame; the driving unit is connected with the frame; the walking wheels are at least provided with two walking wheels and are respectively arranged at two sides of the frame; the transmission system is arranged between the driving unit and the travelling wheels, and is in transmission connection with the driving unit and the travelling wheels respectively; the transmission system comprises a clutch, when the wheel type tool needs to work, the clutch is connected with the power transmission of the driving unit to travel on the travelling wheel, when the wheel type tool needs to be pushed, the clutch is disconnected to interrupt the power transmission, so that the rotating resistance of the driving unit does not need to be overcome when the wheel type tool is pushed, only the rolling friction force of the travelling wheel is needed to be overcome, and the wheel type tool is pushed more labor-saving.

Description

Wheel type tool and travelling mechanism

Technical Field

The application relates to the technical field of wheel tools, in particular to a wheel tool and a travelling mechanism.

Background

In the use process of the wheel type tool, for example, a scarifier and a snowplow generally need to be provided with a travelling mechanism to walk in a working area, and the wheel type tool in the current market has larger resistance when in advancing and working due to the limitation of working environment and needs high-power and low-rotation-speed power output.

The existing wheel type tool reduces the rotating speed and increases the self-propelled torque by being provided with a speed reducing system, when the wheel type tool is used, the wheel type tool is generally moved in a pushing mode, when the wheel type tool is unpowered or is pushed in a blank mode, the wheel type tool is required to travel, the self-gravity of the machine, the engine or the motor and the reverse torque of the gear of the speed reducing system are overcome, so that the self-propelled wheel type tool in the prior art is difficult to move in the unpowered or blank mode, and the using convenience of the self-propelled wheel type tool in the prior art is greatly reduced.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present application is to propose a wheeled tool and a travelling mechanism, which can realize a self-travelling function while ensuring the flexibility of the wheeled tool.

To achieve the above and other related objects, the present application provides a wheeled tool comprising:

a frame;

the operation unit is connected with the frame;

the driving unit is connected with the rack;

the travelling wheels are at least provided with two travelling wheels and are respectively arranged at two sides of the frame;

the transmission system is arranged between the driving unit and the travelling wheels, and is in transmission connection with the driving unit and the travelling wheels respectively;

the transmission system comprises a clutch, and the clutch is used for disconnecting or connecting power transmission between the travelling wheel and the driving unit.

In an alternative embodiment of the application, the power input and the power output of the clutch are located on the same side of the clutch.

In an alternative embodiment of the application, the transmission system comprises a reduction mechanism engaging the power transmission between the clutch and the drive unit.

In an alternative embodiment of the application, the power input and the power output of the reduction mechanism are located on the same side of the reduction mechanism.

In an alternative embodiment of the present application, the speed reducing mechanism is located on a first side of the frame, the clutch is located on a second side of the frame, and the first side and the second side are two sides of the width direction of the frame respectively; the power output end of the driving unit is arranged opposite to the power input end of the speed reducing mechanism; the power output end of the speed reducing mechanism is opposite to the power input end of the clutch.

In an alternative embodiment of the application, an axle is coaxially connected between two travelling wheels, a driven piece is arranged on the axle, and the transmission system is in transmission connection with the driven piece to drive the axle to rotate.

In an alternative embodiment of the application, a transmission member for driving the driven member to act is arranged between the driven member and the output end of the clutch.

In an alternative embodiment of the present application, the transmission system includes a transmission shaft, and two ends of the transmission shaft are respectively connected with the clutch and the speed reducing mechanism in a transmission manner.

In an alternative embodiment of the application, the transmission is arranged on the side of the clutch close to the reduction mechanism.

In an alternative embodiment of the present application, the transmission member is a transmission sleeve coaxially sleeved on the transmission shaft and rotationally connected with the transmission shaft, and one end of the transmission sleeve is connected with the power output end of the clutch.

In an alternative embodiment of the present application, the driven member is a driven gear coaxially fixed to the axle, and a driving gear meshed with the driven gear is disposed on an outer peripheral surface of the transmission sleeve.

In an alternative embodiment of the application, the position of the drive unit in the axial direction of the drive shaft is located between the clutch and the reduction gear.

In an alternative embodiment of the application, the projection of the transmission element on the transmission shaft end face is located within the projection of the clutch on the transmission shaft end face, and the projection of the drive unit on the transmission shaft end face and the projection of the clutch on the transmission shaft end face have overlapping areas.

In an alternative embodiment of the application, the clutch comprises:

the rotor is in transmission connection with the driving unit;

and the electric beam plate is in transmission connection with the travelling wheels, and is close to the attaching rotor or far from the rotor along the axial direction of the rotor.

In an alternative embodiment of the application, the clutch further comprises:

a stator connected with the frame;

the elastic mechanism is connected with one side of the electric beam plate, which is far away from the rotor;

the rotor with the stator normal running fit, the rotor is located the stator with between the electric beam board, the electric beam board pass through the driving medium with walking wheel transmission is connected, elastic mechanism sets up the electric beam board with between the driving medium, elastic mechanism drives the electric beam board with the driving medium has the trend of separation.

The application also provides a wheeled tool comprising

A driving unit;

a walking wheel;

the transmission system is in transmission connection with the driving unit and the travelling wheels respectively;

the clutch is arranged in the transmission system and used for disconnecting or connecting the power transmission between the travelling wheel and the driving unit;

when the tool is electrified, the driving unit is electrified, and the clutch is connected with power transmission between the travelling wheel and the driving unit; when the tool is powered off, the driving unit is powered off, and the clutch disconnects power transmission between the travelling wheel and the driving unit.

The application also provides a travelling mechanism, which comprises:

a driving unit;

the transmission system is in transmission connection with the driving unit;

the travelling wheel is in transmission connection with the transmission system;

the transmission system comprises a clutch which is used for disconnecting or connecting the power transmission between the travelling wheel and the driving unit.

In an alternative embodiment of the application, the clutch is an electromagnetic clutch.

The application has the technical effects that: the application provides a wheel type tool and a travelling mechanism, wherein a clutch is additionally arranged in a transmission system, when the wheel type tool needs to work, the clutch is connected with power transmission to transmit the power of a driving unit to a travelling wheel for travelling, and when the wheel type tool needs to be pushed, the clutch is disconnected to interrupt the power transmission, so that the travelling wheel rolls and does not transmit the action of the travelling wheel to the driving unit when pushing, and thus the rotating resistance of the driving unit does not need to be overcome when pushing the wheel type tool, only the rolling friction force of the travelling wheel needs to be overcome, and the wheel type tool is pushed more labor-saving.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a middle wheel tool according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a middle walking mechanism according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a middle drive system according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a mid-drive system in one embodiment of the application;

FIG. 5 is a schematic perspective view of a transmission system according to an embodiment of the application;

FIG. 6 is a disassembled view of a transmission system according to an embodiment of the present application;

FIG. 7 is a schematic diagram illustrating the driving engagement of the clutch and the axle according to an embodiment of the present application;

FIG. 8 is a schematic diagram illustrating the transmission engagement of the clutch with the driving unit and the reduction mechanism according to an embodiment of the present application;

FIG. 9 is a schematic diagram illustrating the driving engagement of the clutch and the driving shaft according to an embodiment of the present application;

FIG. 10 is a schematic diagram illustrating the clutch and the transmission shaft in an embodiment of the application;

FIG. 11 is a cross-sectional view of a clutch according to one embodiment of the present application;

fig. 12 is a schematic diagram illustrating a speed reducing mechanism according to an embodiment of the application.

Reference numerals illustrate; 10. a frame; 20. a driving unit; 30. a walking wheel; 31. a wheel axle; 32. a follower; 40. a clutch; 41. a rotor; 42. an electric beam plate; 43. a stator; 44. a plate spring; 50. a speed reducing mechanism; 51. a first gear; 52. a second gear; 53. a third gear; 54. a fourth gear; 55. a housing; 60. a transmission shaft; 70. a transmission member; 80. an armrest; 90. and a working unit.

Detailed Description

Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.

As shown in fig. 2, 3 and 4, the present application provides a wheeled tool, which includes a frame 10, and a working unit 90, a driving unit 20, a traveling wheel 30 and a transmission system mounted to the frame 10; the walking wheels 30 are at least two and are respectively arranged at two sides of the frame 10; the transmission system is arranged between the driving unit 20 and the travelling wheel 30 and is in transmission connection with the driving unit 20 and the travelling wheel 30 respectively; wherein the transmission system comprises a clutch 40 for disconnecting or connecting the power transmission between the road wheels 30 and the drive unit 20.

The rear end of the frame 10 is provided with an armrest 80 which is obliquely upwards arranged from front to back, the operation unit 90 is mounted on the frame 10, further, the operation unit 90 is arranged at the rear end of the frame 10, and the operation unit 90 can be arranged at the bottom, two sides or front of the frame 10 according to different types of the operation unit 90.

The wheeled tool in the present application may be a snowplow, a ripper, a mower, or the like, in which the working unit 90 corresponds to a working mechanism of the snowplow, the ripper, the mower, or the like, for example, the working unit 90 is a snowplow mechanism or a snow blower mechanism in the case of the snowplow, the working unit 90 is a ripper mechanism in the case of the ripper, and the working unit 90 is a mower mechanism in the case of the mower. The frame 10 in the present application refers to a carrier for other components of the wheeled tool.

In the above-described solution, the drive unit 20, the road wheels 30 and the transmission system together constitute the running gear of the wheeled tool.

The wheel type tool can be switched between two modes of active walking and passive walking, wherein the active walking is to independently drive the wheel type tool to walk by adopting the driving unit, and the passive walking is to walk by manual pushing instead of rotating the driving unit, and in the scheme, the transmission of power is disconnected or connected through the clutch 40, so that the reverse power transmission can be disconnected when the cart is pushed, the reverse torque in the driving unit 20 and a transmission system is prevented from obstructing pushing, and the pushing is more labor-saving.

The road wheels 30 in the present application refer to a part where the wheel type tool rolls in direct contact with the ground, and the road wheels 30 are preferably provided in an even number, and in the present embodiment, two road wheels are provided. The traveling wheels 30 of the wheel type tool may be provided not only on both sides of the frame 10, but preferably one or three if the traveling wheels 30 are provided in an odd number, and one of the odd number of traveling wheels 30 may be provided in the middle in the width direction of the frame 10. The reason why two road wheels 30, which are disposed separately on both sides of the frame 10, are preferably provided in the present application is that the driving unit 20 and the transmission system can be arranged between the two road wheels to make the wheeled tool more compact.

The clutch 40 in the present application is preferably an electromagnetic clutch. The electromagnetic coil of the electromagnetic clutch is connected with a starting switch of the whole machine, when the whole machine is electrified, the electromagnetic coil of the electromagnetic clutch is electrified and attracted to connect the power transmission between the travelling wheel 30 and the driving unit 20, and when the whole machine is powered off, the electromagnetic coil of the electromagnetic clutch is powered off and separated to disconnect the power transmission between the travelling wheel 30 and the driving unit 20, namely, the electromagnetic clutch adopted in the application is the clutch 40 which is electrified when the whole machine is electrified and disconnected when the whole machine is powered off, and the clutch 40 ensures that the clutch 40 can disconnect the power transmission under the condition that other operations are not needed when a wheel type tool is suddenly powered off due to failure, so as to prevent reverse torque in a transmission system from blocking movement when the wheel type tool is pushed or pulled by manpower. Meanwhile, the electromagnetic clutch is directly connected with the driving unit 20, an additional control unit is not required to monitor the state of the driving unit 20 to control the working state of the electromagnetic clutch, the cost is saved, and the clutch 40 can respond quickly.

The drive unit 20 in the present application may be an electric motor or an internal combustion engine, and is preferably an electric motor in the present application. The motor is convenient for reduce the volume of wheeled instrument and promote the flexibility in comparison with the internal-combustion engine volume is smaller, and the noise of motor is less simultaneously and is convenient for promote the travelling comfort when operating personnel uses. For driving the motor to rotate, a power cord or a battery can be arranged on the frame 10, and the battery is preferably arranged in the application, so that the wheel type tool with the battery has a larger use radius without being limited by the length of the power cord.

The transmission system in the present application, which is provided on the frame 10 and is disposed between the two road wheels 30, is capable of engaging the power transmission between the road wheels 30 and the drive unit 20. The arrangement can ensure that the transmission system does not occupy excessive transverse space.

In the above-described aspect, the power transmission direction when the clutch 40 is engaged is from the drive unit 20 to the clutch 40 to the road wheel 30, and the power transmission direction when the clutch 40 is released from manual pushing is from the road wheel 30 to the clutch 40.

As shown in fig. 3, 4, 5, 6 and 7, an axle 31 is coaxially connected between two travelling wheels 30, a follower 32 is arranged on the axle 31, and a transmission system is in transmission connection with the follower 32 to drive the axle 31 to rotate. The follower 32 is preferably disposed at a middle position in an axial direction of the axle 31, and the follower 32 disposed at the middle position of the axle 31 can ensure that the middle part of the axle is mainly subjected to torque, so as to ensure that the traveling wheels 30 at two ends are uniformly stressed and avoid deflection caused by uneven stress. The follower 32 is preferably a follower gear, the follower gear is coaxially and fixedly arranged with the wheel shaft 31 through a flat key or a spline, and the travelling wheels 30 are coaxially and fixedly arranged at two ends of the wheel shaft 31 through a pin shaft, so that the rotation of the follower gear can be converted into the rotation of the wheel shaft to drive the travelling wheels 30 to rotate and walk.

In the above-mentioned scheme, the power transmission direction when the clutch 40 is engaged is from the driving unit 20 to the clutch 40 to the driven member 32 to the wheel shaft 31 to the travelling wheel 30, and the power transmission direction when the clutch 40 is disengaged from the manual pushing is from the travelling wheel 30 to the wheel shaft 31 to the driven member 32 to the clutch 40.

As shown in fig. 3, 4, 5, 6, 7, 8, 9, 10, 11, the end of the driveline power transmission path is provided with a transmission member 70 that drives the driven member 32. That is, the output end of the clutch 40 is connected with the driven member 32 through the transmission member 70, and the transmission member 70 is in transmission fit with the driven member 32 to transmit the power of the driving unit 20 to the driven member 32. The clutch 40 is preferably in a disc shape, and the transmission member 70 is preferably a transmission sleeve coaxially arranged with the clutch 40, and a driving gear engaged with the driven gear is provided on an outer peripheral surface of the transmission sleeve. The driving gear is composed of teeth arranged on the periphery of the transmission pipe sleeve. Since the driven gear is provided in the middle of the wheel shaft 31, that is, in the middle of the wheel-type tool width direction, the driving gear engaged with the driven gear is provided in the middle of the wheel-type tool width direction.

In the above-mentioned scheme, the power transmission direction when the clutch 40 is engaged is from the driving unit 20 to the clutch 40 to the transmission member 70 to the driven member 32 to the wheel shaft 31 to the travelling wheel 30, and the power transmission direction when the clutch 40 is released from manual pushing is from the travelling wheel 30 to the wheel shaft 31 to the driven member 32 to the transmission member 70 to the clutch 40.

Since the transmission path from the drive unit 20 to the road wheels 30 is required to be reduced in speed and increased in torque when the wheel type tool is in use, it is preferable that the driving gear is a pinion gear having a small number of teeth and the corresponding driven gear is a bull gear. Preferably, the projection of the driving gear on the end face of the disk clutch 40 is located on the end face of the disk clutch 40. The fact that the driven gear is a large gear means that the driven gear is large in diameter, and the length of the driven gear is not too long for a wheel type tool, otherwise steering is difficult, and therefore space occupation of the internal parts of the wheel type tool in the length direction is required to be reduced as much as possible. The projection position of the driving gear indicates that the projection of the driven gear on the end face of the disc clutch 40 is located locally on the end face of the disc clutch 40, the disc clutch 40 is located axially in the width direction of the wheel type tool, that is, the end face of the clutch 40 is parallel to the length direction and the height direction of the wheel type tool, that is, the driving gear is located completely in the space in the length direction and the height direction which are originally occupied by the disc clutch 40, and the part of the driven gear is also located in the space in the length direction and the height direction which are originally occupied by the disc clutch 40. Namely, the transmission system can be compactly arranged in the length direction and the height direction of the wheel type tool by utilizing the part of the original occupied space to arrange the driving gear and the driven gear.

As shown in fig. 3, 4, 5, 6, 7, the axial dimension of the driving gear is preferably larger than the axial dimension of the driven gear. And limiting parts for axially limiting the wheel shaft gear are arranged at two ends of the driving gear. For a part of the clutch 40, the clutch process will drive the transmission member 70 axially connected with the clutch 40 to axially displace along with the axial displacement, so that the axial dimension of the driving gear on the transmission member 70 is larger to reserve enough axial displacement space, and meanwhile, the two ends of the driving gear are provided with limiting parts to prevent the driving gear and the driven gear from axially separating to cause transmission interruption. In the above scheme, the driving gear is a pinion, the driven gear is a bull gear, that is to say, the structure that the axial dimension is larger and the two ends are provided with the limiting parts is arranged on the pinion, if the bull gear is arranged, the overall weight and the cost are greatly increased, and therefore the structure is arranged on the driving gear serving as the pinion.

As shown in fig. 3, 4, 5, 6, 7, 8, 9, 10, 11, the power input and the power output of the clutch 40 are located on the same side of the clutch 40. The power input end of the clutch 40 refers to a rotor 41 of the electromagnetic clutch, and the power output end of the clutch 40 refers to an electric beam plate 42 that is close to or far from the rotor 41. The electric beam plate 42 is in transmission connection with the transmission pipe sleeve, when the electromagnetic coil in the electromagnetic clutch is electrified, the electric beam plate 42 transmits power to the rotor 41 by virtue of friction force between the two, when the electromagnetic coil in the electromagnetic clutch is disconnected, the electric beam plate 42 is far away from the rotor 41 and is arranged at intervals so as to interrupt power transmission, and the interval distance between the electric beam plate 42 and the rotor 41 is preferably 0.3-0.5mm. The meaning that the power input and the power output are on the same side of the clutch 40 is: the transmission mechanism for transmitting power to the rotor 41 and the transmission mechanism for transmitting power to the outside of the electric beam plate 42 are located on the same side of the clutch 40. Preferably, the power transmission path of the driveline is turned back 180 ° at the clutch 40 position, meaning that the path of power transmission to the rotor 41 is opposite to the path of power transmission to the beam plate 42. The transmission path of the transmission system can be in a roundabout arrangement, and the overlong linear length of the transmission path caused by direct linear transmission is avoided. Since wheeled tools are often required for use in confined terrain, the more compact construction of the circuitous drive train minimizes the occupation of lateral space.

In the above-mentioned scheme, the power transmission direction when the clutch 40 is engaged is from the driving unit 20 to the rotor 41 to the beam plate 42 to the transmission member 70 to the driven member 32 to the wheel shaft 31 to the travelling wheel 30, and the power transmission direction when the clutch 40 is released from manual pushing is from the travelling wheel 30 to the wheel shaft 31 to the driven member 32 to the transmission sleeve to the beam plate 42.

As shown in fig. 4, 10 and 11, the clutch 40 includes a stator 43, a rotor 41, an electric beam plate 42 and an elastic mechanism, the stator 43 is fixedly arranged on the frame 10, the rotor 41 and the stator 43 form a running fit, a transmission shaft 60 is fixedly connected to the rotor 41 coaxially, the transmission shaft 60 is in transmission connection with the driving unit 20, and the axis of the transmission shaft 60 is parallel to the axis of the wheel shaft 31. The drive shafts 60 are located at circumferential positions of the wheel shafts 31 and are arranged at intervals, and the drive units 20 are located at circumferential positions of the drive shafts 60 and are arranged at intervals. The circumferential space of the transmission shaft 60 is large, and at the same time, the axial direction of the transmission shaft 60 is the width direction of the wheel type tool, and the transmission shaft 60 is positioned at the circumferential position of the wheel axle 31, that is, the transmission shaft 60 is positioned at the circumferential position of the wheel axle 31 and is positioned at the length direction of the wheel type tool. The transmission shaft 60 and the transmission sleeve are coaxially arranged on the same side of the clutch 40, the transmission sleeve is sleeved on the transmission shaft 60 and forms a rotating fit, the rotor 41 is arranged between the stator 43 and the electric beam plate 42, the electric beam plate 42 is of an annular structure sleeved on the transmission shaft 60 and is in rotating fit with the transmission shaft 60, and thus, when the rotor 41 is separated from the electric beam plate 42, the power transmission between the transmission sleeve and the transmission shaft 60 can be disconnected.

The electric beam plate 42 is provided with an axial pin shaft, the end face of the transmission pipe sleeve, which is close to the electric beam plate 42, is provided with an axial hole, and the electric beam plate 42 and the transmission pipe sleeve form a rotation-stopping sliding fit through the axial pin shaft and the axial hole so as to facilitate the axial displacement of the electric beam plate 42 relative to the transmission pipe sleeve. The two ends of the elastic mechanism are respectively connected with the electric beam plate 42 and the transmission pipe sleeve, when the electric beam plate 42 axially displaces, one end of the elastic mechanism connected with the electric beam plate 42 compresses or extends by the same displacement amount, so that the position of the transmission pipe sleeve at the other end is unchanged, and the power interruption caused by the fact that the transmission pipe sleeve axially slides and is separated from the driven gear is avoided. Wherein the resilient means is preferably a plate spring 44, the resilient means further being selected as a constant load plate spring.

In the above-mentioned scheme, the power transmission direction when the clutch 40 is engaged is from the driving unit 20 to the transmission shaft 60 to the rotor 41 to the beam plate 42 to the transmission member 70 to the driven member 32 to the wheel shaft 31 to the travelling wheel 30, and the power transmission direction when the clutch 40 is released from manual pushing is from the travelling wheel 30 to the wheel shaft 31 to the driven member 32 to the transmission sleeve to the beam plate 42.

As shown in fig. 3, 4, 5, 6, 8, the transmission system includes a reduction mechanism 50 that engages the power transmission between the clutch 40 and the drive unit 20. The output end of the speed reducing mechanism 50 is in transmission connection with the rotor 41 of the clutch 40 through a transmission shaft 60 so as to transmit power to the rotor 41 to drive the rotor 41 to rotate. The power of the motor can be reduced and the torque can be increased through the speed reducing mechanism 50, and the loosener or the snowplow generally needs large torque to walk, so the speed reducing mechanism 50 is arranged to increase the torque. The reduction mechanism 50 being provided between the clutch 40 and the drive unit 20 means that when the clutch 40 disconnects the power transmission between the drive unit 20 and the road wheels 30, the transmission of power between the road wheels 30 and the reduction mechanism 50 is also disconnected. Because the speed reducing mechanism 50 is used for reducing speed and increasing torque, once the power input end and the power output end of the speed reducing mechanism 50 reversely transmit power, the reverse torque in the speed reducing mechanism 50 is larger, and if the power transmission between the travelling wheel 30 and the speed reducing mechanism 50 is not disconnected, the force required for manually pulling or pushing the wheel type tool to move so as to drive the travelling wheel 30 to rotate is larger. The clutch 40 in the present application is thus located in the power transmission path between the reduction mechanism 50 and the road wheel 30. The power transmission direction of the transmission system is thus from the drive unit 20 to the reduction mechanism 50 to the clutch 40 to the road wheels 30. In the above-mentioned scheme, the power transmission direction when the clutch 40 is engaged is from the driving unit 20 to the input end of the speed reduction mechanism to the output end of the speed reduction mechanism to the transmission shaft 60 to the rotor 41 to the electric beam plate 42 to the transmission member 70 to the driven member 32 to the wheel shaft 31 to the travelling wheel 30, and the power transmission direction when the clutch 40 is released from manual pushing is from the travelling wheel 30 to the wheel shaft 31 to the driven member 32 to the transmission sleeve to the electric beam plate 42.

As shown in fig. 3, 4, 5, 6, 8, the power input end and the power output end of the reduction mechanism 50 are located on the same side of the reduction mechanism 50. The same bypass of the power transmission path at the position of the reduction mechanism 50 can avoid the excessive linear length of the transmission path caused by direct linear transmission. The speed reducing mechanism 50 is a gear reducer, as shown in fig. 12, and the gear reducer includes a housing 55, a first gear 51 coaxially connected to the output shaft of the driving unit 20 is disposed in the housing 55, the first gear 51 is meshed with a second gear 52, a third gear 53 is coaxially connected to the second gear 52, the third gear 53 is meshed with a fourth gear 54, the fourth gear 54 is coaxially connected to the transmission shaft 60, and the third gear 53 and the fourth gear 54 are located on one side of the second gear 52 close to the transmission shaft 60. The centers of the first gear 51, the second gear 52, the third gear 53, and the fourth gear 54 of the drive unit are parallel to the axis of the transmission shaft 60. When the drive unit 20 is started, the power transmission path in the reduction mechanism 50 is: the driving unit 20 to the first gear 51 to the second gear 52 to the third gear 53 to the fourth gear 54 to the transmission shaft 60. In the scheme, the speed reduction and torque increase of power transmission are realized through the gear ratio between the gears, and meanwhile, the axial space occupation of the gear reducer is small, so that the integral width of the gear reducer away from a tool is reduced.

As shown in fig. 3 and 4, the speed reducing mechanism 50 is located on a first side of the frame 10, the clutch 40 is located on a second side of the frame 10, and the first side and the second side are two sides of the frame 10 in the width direction respectively; the power output end of the driving unit 20 is disposed opposite to the power input end of the reduction mechanism 50; the power output end of the speed reducing mechanism 50 is disposed opposite to the power input end of the clutch 40. That is, the reduction mechanism 50 and the clutch 40 are separated on both sides, and the other transmission mechanism is provided between the reduction mechanism 50 and the clutch 40, so that the overall width occupation is reduced as much as possible. Meanwhile, the driving unit 20 and the clutch 40 are arranged opposite to the speed reducing mechanism 50, that is to say, the driving unit 20 and the clutch 40 are arranged by utilizing the space occupied by the speed reducing mechanism 50 in the length direction and the height direction of the wheel type tool, so that the space occupied by the wheel type tool in the length direction and the height direction can be reduced, and the compactness of the structure is improved.

The projection of the drive unit 20 onto the end face of the drive shaft 60 and the projection of the clutch 40 onto the end face of the drive shaft 60 have overlapping areas. Wherein the drive unit 20 is arranged radially adjacent to the drive socket. Since the wheel tool cannot be too long as well, the arrangement of the drive unit 20 between the clutch 40 and the reduction mechanism 50 while being arranged adjacent to the transmission sleeve can effectively reduce the occupation of space in the length direction of the wheel tool. The output shaft of the drive unit 20 is axially parallel to the drive shaft 60. I.e. the drive unit 20 is arranged laterally, avoiding taking up too much longitudinal space.

As shown in fig. 3, 4, 5, 6, 8, the position of the drive unit 20 in the axial direction of the transmission shaft 60 is located between the clutch 40 and the reduction gear. The drive unit 20 is disposed adjacent to the clutch 40 and the reduction gear, respectively, at both ends in the axial direction of the drive shaft 60. The three parts are arranged in the width direction of the wheel type tool in the sequence of the speed reducing mechanism, the driving unit and the clutch, and the total length of the wheel type tool in the width direction of the three parts is the width space occupied by the transmission system.

In the first embodiment, the drive unit 20 is disposed between the transmission shaft 60 and the radial position of the wheel shaft 31. This can minimize the occupation of the front and rear spaces by the driving unit 20. In this embodiment, the driven gear on the axle 31 may be biased towards the travelling wheel at one side to reserve a space for placing the driving unit 20, that is, the driving unit 20 is arranged in the length direction and the height direction occupied by the original driven gear to improve the space utilization.

In the second embodiment, the transmission shaft 60 is disposed between the drive unit 20 and the radial position of the wheel shaft 31. This prevents the drive unit 20 from interfering with the follower 32, thereby ensuring that the follower 32 is located in the middle of the axle 31.

In addition, the axes of the transmission shaft 60, the driving unit 20 and the wheel shaft 31 may be arranged in a triangle, and this arrangement not only reduces the space occupation, but also avoids the interference between the driving unit 20 and the driven member 32.

The application also provides a wheeled tool, which comprises a driving unit 20, a travelling wheel 30, a transmission system and a clutch 40, wherein the transmission system is in transmission connection with the driving unit 20 and the travelling wheel 30 respectively; a clutch 40 is provided in the transmission system for disconnecting or connecting the power transmission between the road wheel 30 and the driving unit 20; when the tool is electrified, the driving unit 20 is electrified, and the clutch 40 is connected with power transmission between the travelling wheel 30 and the driving unit 20; when the tool is de-energized, the drive unit 20 is de-energized and the clutch 40 disconnects the power transmission between the road wheel 30 and the drive unit 20.

The wheel type tool in the above scheme can be provided with a complete machine power-on switch, and the wheel type tool power-on switch simultaneously controls the driving unit 20 and the clutch 40 to be powered on or powered off, and the clutch 40 is connected in a power-on state and disconnected in a power-off state. In the above scheme, the state of the clutch 40 and the state of the driving unit 20 directly correspond, that is, the clutch 40 is engaged with the corresponding self-running working condition of the wheel-type tool, and the clutch 40 is disengaged from the corresponding manual pushing or pulling working condition of the wheel-type tool, so that the state of the clutch 40 required in actual use is met.

The application also provides a travelling mechanism, which comprises a driving unit 20, a transmission system and travelling wheels 30, wherein the transmission system is in transmission connection with the driving unit 20; the travelling wheel 30 is in transmission connection with a transmission system; the transmission system includes a clutch 40, the clutch 40 being used to disconnect or connect the transmission of power between the road wheels 30 and the drive unit 20. The clutch 40 is an electromagnetic clutch.

In summary, the present application provides a wheel tool and a travelling mechanism, in which a clutch 40 is added in a transmission system, when the wheel tool needs to work, the clutch 40 is engaged with the power transmission to transmit the power of the driving unit 20 to the travelling wheel 30 for travelling, when the wheel tool needs to be pushed, the clutch 40 is disengaged to interrupt the power transmission, so that the travelling wheel 30 rolls and does not transmit the motion to the driving unit 20 when pushing, and thus the rotation resistance of the driving unit 20 does not need to be overcome when pushing the wheel tool, only the rolling friction of the travelling wheel 30 itself needs to be overcome, and the force is saved when pushing the wheel tool.

The above embodiments are merely illustrative of the principles of the present application and its effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all equivalent modifications and variations of the application be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Although the application has been described herein with reference to particular embodiments thereof, a latitude of modification, various changes and substitutions are intended in the foregoing disclosures, and it will be appreciated that in some instances some features of the application will be employed without a corresponding use of other features without departing from the scope and spirit of the application as set forth. Therefore, many modifications may be made to adapt a particular situation or material to the essential scope and spirit of the present application. It is intended that the application not be limited to the particular terms used in following claims and/or to the particular embodiment disclosed as the best mode contemplated for carrying out this application, but that the application will include any and all embodiments and equivalents falling within the scope of the appended claims. Accordingly, the scope of the application should be determined only by the following claims.

Claims (18)

1. A wheeled tool, comprising:

a frame;

the operation unit is connected with the frame;

the driving unit is connected with the rack;

the travelling wheels are at least provided with two travelling wheels and are respectively arranged at two sides of the frame;

the transmission system is arranged between the driving unit and the travelling wheels, and is in transmission connection with the driving unit and the travelling wheels respectively;

the transmission system comprises a clutch, and the clutch is used for disconnecting or connecting power transmission between the travelling wheel and the driving unit.

2. A wheeled tool as claimed in claim 1, wherein the power input and power output of the clutch are on the same side of the clutch.

3. A wheeled tool according to claim 1, wherein the transmission system includes a reduction mechanism engaging the power transmission between the clutch and the drive unit.

4. A wheeled tool according to claim 3, wherein the power input and power output of the reduction mechanism are on the same side of the reduction mechanism.

5. A wheeled tool according to claim 3, wherein the reduction mechanism is located on a first side of the frame, the clutch is located on a second side of the frame, the first side and the second side being on opposite sides of the frame in the width direction; the power output end of the driving unit is arranged opposite to the power input end of the speed reducing mechanism; the power output end of the speed reducing mechanism is opposite to the power input end of the clutch.

6. A wheeled tool according to claim 4, wherein an axle is coaxially connected between two of said road wheels, said axle being provided with a driven member, said transmission system being drivingly connected to said driven member for driving said axle in rotation.

7. A wheeled tool according to claim 6, wherein a transmission member is provided between the driven member and the output of the clutch to actuate the driven member.

8. A wheeled tool according to claim 7, wherein said drive system includes a drive shaft, said drive shaft having opposite ends drivingly connected to said clutch and said reduction mechanism, respectively.

9. A wheeled tool according to claim 7, wherein said transmission is provided on a side of said clutch adjacent said reduction mechanism.

10. The wheel tool of claim 8 wherein the driving member is a driving socket coaxially disposed on the driving shaft and rotatably coupled thereto, and wherein one end of the driving socket is coupled to the power take-off of the clutch.

11. The wheel tool of claim 10 wherein the driven member is a driven gear coaxially fixed to the wheel shaft, and wherein a driving gear engaged with the driven gear is provided on an outer peripheral surface of the driving socket.

12. A wheeled tool according to claim 8, wherein the position of the drive unit in the axial direction of the drive shaft is between the clutch and the reducer.

13. A wheeled tool according to claim 8, wherein the projection of the driving member onto the driving shaft end face is located within the projection of the clutch onto the driving shaft end face, the projection of the driving unit onto the driving shaft end face and the projection of the clutch onto the driving shaft end face having overlapping areas.

14. A wheeled tool as claimed in claim 1, wherein: the clutch includes:

the rotor is in transmission connection with the driving unit;

and the electric beam plate is in transmission connection with the travelling wheels, and is close to the attaching rotor or far from the rotor along the axial direction of the rotor.

15. A wheeled tool as claimed in claim 14, wherein: the clutch further includes:

a stator connected with the frame;

the elastic mechanism is connected with one side of the electric beam plate, which is far away from the rotor;

the rotor with the stator normal running fit, the rotor is located the stator with between the electric beam board, the electric beam board pass through the driving medium with walking wheel transmission is connected, elastic mechanism sets up the electric beam board with between the driving medium, elastic mechanism drives the electric beam board with the driving medium has the trend of separation.

16. A wheeled tool, comprising

A driving unit;

a walking wheel;

the transmission system is in transmission connection with the driving unit and the travelling wheels respectively;

the clutch is arranged in the transmission system and used for disconnecting or connecting the power transmission between the travelling wheel and the driving unit;

when the tool is electrified, the driving unit is electrified, and the clutch is connected with power transmission between the travelling wheel and the driving unit; when the tool is powered off, the driving unit is powered off, and the clutch disconnects power transmission between the travelling wheel and the driving unit.

17. A running gear, characterized in that includes:

a driving unit;

the transmission system is in transmission connection with the driving unit;

the travelling wheel is in transmission connection with the transmission system;

the transmission system comprises a clutch which is used for disconnecting or connecting the power transmission between the travelling wheel and the driving unit.

18. A wheeled tool as claimed in claim 17, wherein: the clutch is an electromagnetic clutch.