Differential steering assembly and snow sweeper

Abstract

The utility model belongs to the technical field of snow sweeping devices, and provides a differential steering assembly which is arranged on a machine body, a driving device is arranged on the machine body, walking mechanisms in transmission connection with the driving device are arranged on the left side and the right side of the machine body, and the differential steering assembly comprises a steering handrail arranged at the rear end of the machine body and a clutch assembly. The clutch assembly is arranged on the machine body, and the driving device is in transmission connection with the walking mechanism through the clutch assembly. The utility model further provides a snow sweeper which comprises the differential steering assembly. The differential steering assembly and the snow sweeper are simple in structure, reasonable in design and small in turning radius.

Description

Technical Field

[0001] The utility model relates to the technical field of snow sweeping devices, in particular to a differential steering assembly and a snow sweeper. Background Art

[0002] The snow sweeper includes a fuselage, a driving device arranged on the fuselage, a traveling mechanism arranged on both sides of the fuselage and connected to the power output shaft of the driving device, a snow sweeping mechanism arranged at the front end of the fuselage and connected to the power output shaft of the driving device, and a steering armrest arranged at the rear end of the fuselage. When turning, the steering armrest is swung to generate a steering torque, causing the fuselage to deflect, thereby achieving the purpose of steering.

[0003] However, when the current snowplow turns or even makes a U-turn, the walking mechanisms on both sides still rotate synchronously, resulting in a large turning radius of the snowplow. When clearing snow over a large area, the snowplow is often required to take an S-shaped path. A large turning radius will cause a gap between two adjacent straight paths, resulting in a snow-clearing blind spot, which affects the snow-clearing efficiency. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a differential steering assembly and a snowplow to solve or alleviate the above-mentioned technical problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, on the one hand, the utility model provides a differential steering assembly, which is arranged on a fuselage, a driving device is arranged on the fuselage, and a walking mechanism connected to the driving device by transmission is arranged on the left and right sides of the fuselage, which includes a steering armrest, the steering armrest is arranged at the rear end of the fuselage, and also includes a clutch assembly, the clutch assembly is arranged on the fuselage, and the driving device is connected to the walking mechanism by transmission through the clutch assembly;

[0006] When turning, the clutch assembly separates the power input end of the target walking mechanism from the power output end of the drive device to reduce the speed of the target walking mechanism, so that the speed of the walking mechanism located on the inner side is lower than the speed of the walking mechanism located on the outer side.

[0007] Further, the clutch assembly comprises:

[0008] A transmission wheel, which is rotatably connected to the fuselage and is drivingly connected to the power output shaft of the driving device;

[0009] A transmission shaft, which is arranged on the fuselage and rotatably connected to the fuselage, and two transmission shafts are arranged coaxially with the transmission wheel, and the first ends of the two transmission shafts are rotatably connected to the transmission wheel, and the second ends are transmission-connected to the two walking mechanisms respectively; and

[0010] There are two clutch units, which are respectively arranged on both sides of the transmission wheel. In the working state, the clutch unit combines the corresponding transmission shaft with the transmission wheel so that the transmission wheel can drive the transmission shaft to rotate. In the non-working state, the clutch unit separates the corresponding transmission shaft from the transmission wheel so that the transmission wheel cannot drive the transmission shaft to rotate.

[0011] Furthermore, the clutch unit comprises:

[0012] A clutch disc, which is sleeved on the corresponding transmission shaft and is in transmission connection with the transmission shaft, and can move along the axis of the transmission shaft, and has a first position and a second position;

[0013] Wherein, when the clutch disc is in the first position, the clutch disc is combined with the transmission wheel, so that the transmission wheel can drive the transmission shaft to rotate through the clutch disc;

[0014] When the clutch disc is in the second position, the clutch disc is separated from the transmission wheel, so that the transmission wheel cannot drive the transmission shaft to rotate; and

[0015] A first driving structure is arranged on the fuselage and is drivingly connected to the clutch disc. The first driving structure is used to drive the clutch disc from the first position to the second position or from the second position to the first position.

[0016] Furthermore, the first driving structure includes:

[0017] a first elastic element, two ends of which are respectively connected to the transmission shaft and the clutch disc, and in a natural state, the first elastic element applies elastic force to the clutch disc so that the clutch disc has a tendency to move from the second position to the first position; and

[0018] A first cable is movably connected to the fuselage, and a first end of the first cable is connected to the clutch disc.

[0019] Furthermore, the first driving structure further comprises a toggle element, the toggle element is movably connected to the fuselage, and the toggle element is drivingly connected to the clutch disc to drive the clutch disc to move;

[0020] The first end of the first cable is connected to the shifting element.

[0021] Furthermore, it also includes a brake assembly, which is arranged on the fuselage. In the working state, when the clutch assembly separates the power input end of the target walking mechanism from the power output end of the driving device, the brake assembly brakes the target walking mechanism to quickly reduce the speed of the target walking mechanism.

[0022] Further, the braking assembly includes two braking units respectively corresponding to the two traveling mechanisms, and each braking unit includes:

[0023] A braking element, which is movably connected to the fuselage and has a third position and a fourth position;

[0024] Wherein, when the braking element is in the third position, the braking element is separated from the power transmission element of the corresponding traveling mechanism;

[0025] When the braking element is in the fourth position, the braking element abuts against the power transmission element of the corresponding traveling mechanism, so as to apply a resistance to the power transmission element of the traveling mechanism to reduce the speed of the traveling mechanism; and

[0026] A second driving structure, which is arranged on the fuselage, is in transmission connection with the braking element, and is used to drive the braking element from the third position to the fourth position or from the fourth position to the third position.

[0027] Further, the second driving structure includes:

[0028] A second elastic element, whose first end is connected to the braking element and second end is connected to the fuselage, and in its natural state, it applies an elastic force to the braking element to make the braking element have a tendency to move from the fourth position to the third position; and

[0029] A second cable, which is movably connected to the fuselage and whose first end is connected to the braking element.

[0030] Further, the braking element is sleeved on the first end of a rotating shaft and is fixedly connected to the rotating shaft, and the second end of the rotating shaft is rotatably connected to the fuselage;

[0031] The second driving structure further includes a transmission element, which is sleeved on the rotating shaft and is fixedly connected to the rotating shaft;

[0032] The first end of the second elastic element is connected to the first end of the transmission element and the second end is connected to the fuselage;

[0033] The first end of the second cable is connected to the transmission element.

[0034] On the other hand, the present utility model also provides a snow sweeper, which includes a fuselage, a driving device arranged on the fuselage, traveling mechanisms arranged on the left and right sides of the fuselage, a snow sweeping mechanism arranged at the front end of the fuselage, and also includes the differential steering assembly according to any one of the above.

[0035] Advantages of the present utility model:

[0036] The differential steering assembly and the snow sweeper provided by the present utility model, by providing a clutch assembly, when steering, the clutch assembly can separate the power input end of the target traveling mechanism from the power output end of the driving device, thereby reducing the speed of the target traveling mechanism, making the speed of the traveling mechanism located inside less than the speed of the traveling mechanism located outside, and thus achieving the purpose of reducing the turning radius. Description of the Drawings

[0037] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0038] Figure 1 A three-dimensional view of the differential steering assembly provided by an embodiment of the present utility model in the first direction;

[0039] Figure 2 For Figure 1 An enlarged view of part A shown;

[0040] Figure 3 For Figure 1 An enlarged view of part B shown;

[0041] Figure 4 For Figure 1 A three-dimensional view of the differential steering assembly shown in the second direction;

[0042] Figure 5 For Figure 4 An enlarged view of part C shown;

[0043] Figure 6 For Figure 5 An enlarged view of part D shown;

[0044] Figure 7 For Figure 5 An enlarged view of part E shown;

[0045] Figure 8 For Figure 1 A three-dimensional view of the differential steering assembly shown in the third direction;

[0046] Figure 9 For Figure 8 An enlarged view of part F shown;

[0047] Figure 10 For Figure 1 A three-dimensional view of the differential steering assembly shown in the fourth direction;

[0048] Figure 11 for Figure 10 An enlarged view of section G is shown;

[0049] Figure 12 for Figure 10 An enlarged view of section H is shown;

[0050] Figure 13 for Figure 10 An enlarged view of section I is shown;

[0051] Figure 14 for Figure 1 A combined stereoscopic view of a clutch plate, a toggle element, a first cable and a limiting element of the differential steering assembly shown;

[0052] Figure 15 for Figure 1 A combined three-dimensional view of the clutch disc and the transmission wheel of the differential steering assembly shown;

[0053] Figure 16 A three-dimensional view of a snow sweeper provided in accordance with an embodiment of the utility model.

[0054] Reference numerals:

[0055] 100, fuselage; 200, driving device; 300, walking mechanism; 310, driving wheel; 311, second blocking part; 320, driven wheel; 330, crawler track; 400, snow-clearing mechanism; 510, steering armrest; 521, transmission wheel; 522, transmission shaft; 523, clutch plate; 524, first elastic element; 525, first cable; 526, toggle element; 527, limit element; 528, first guide tube; 531, brake element; 501, first blocking part; 532, second elastic element; 533, second cable; 534, rotating shaft; 535, transmission element; 536, connecting element; 537, second guide tube; 541, third cable; 542, third guide tube; 550, driving handle. DETAILED DESCRIPTION

[0056] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0057] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0058] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0060] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0061] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] like Figure 1-14 As shown, the utility model provides a differential steering assembly, which is arranged on a fuselage 100, a driving device is arranged on the fuselage 100, and a walking mechanism 300 transmission-connected to the driving device is arranged on the left and right sides of the fuselage.

[0063] Optionally, the driving device can be any device that can provide driving force, such as a driving motor, an engine, etc. In this embodiment, the driving device is an engine.

[0064] likeFigure 1 , 4 As shown in FIGS. 8 and 10 , the differential steering assembly includes a steering armrest 510, which is disposed at the rear end of the fuselage 100 and fixedly connected to the fuselage 100. When turning, the steering armrest 510 is swung to generate torque, causing the fuselage 100 to deflect, thereby achieving the purpose of steering.

[0065] like Figure 1 , 2 As shown in FIGS. 4, 5, 6, 10 and 12, the differential steering assembly further includes a clutch assembly, which is disposed on the fuselage 100, and the drive device is connected to the traveling mechanism 300 through the clutch assembly. When turning, the clutch assembly separates the power input end of the target traveling mechanism 300 (i.e., the traveling mechanism 300 located on the inner side when turning) from the power output end of the drive device to reduce the speed of the target traveling mechanism 300.

[0066] The differential steering assembly provided in this embodiment is provided with a clutch component, so that when turning, the clutch component separates the power input end of the target walking mechanism 300 (that is, the walking mechanism 300 located on the inside when turning) from the power output end of the drive device, so that the speed of the target walking mechanism 300 becomes smaller, so that the speed of the walking mechanism 300 located on the inside is smaller than the speed of the walking mechanism 300 located on the outside, thereby achieving the purpose of reducing the turning radius.

[0067] like Figure 1 , 2 As shown in Figures 4, 5, 6, 10 and 12, the clutch assembly includes a transmission wheel 521, a transmission shaft 522 and a clutch unit.

[0068] The transmission wheel 521 is arranged on the fuselage 100 and is rotatably connected to the fuselage 100. The transmission wheel 521 is transmission-connected to the power output shaft of the driving device 200. The transmission shaft 522 is arranged on the fuselage 100 and is rotatably connected to the fuselage 100. Two transmission shafts 522 are provided. Both transmission shafts 522 are coaxially arranged with the transmission wheel 521. The first ends of the two transmission shafts 522 are rotationally connected to the transmission wheel 521, and the second ends are transmission-connected to the two walking mechanisms 300 respectively.

[0069] There are two clutch units, which are respectively arranged on both sides of the transmission wheel 521. In the working state, the clutch unit combines the corresponding transmission shaft 522 with the transmission wheel 521, so that the transmission wheel 521 can drive the transmission shaft 522 to rotate. In the non-working state, the clutch unit separates the corresponding transmission shaft 522 from the transmission wheel 521, so that the transmission wheel 521 cannot drive the transmission shaft 522 to rotate.

[0070] When turning, the target drive shaft 522 is separated from the drive wheel 521 through the target clutch unit to reduce the rotational speed of the target drive shaft 522, so that the speed of the target traveling mechanism 300 corresponding to the target drive shaft 522 (i.e., the traveling mechanism 300 located on the inner side during turning) becomes smaller, thereby reducing the turning radius.

[0071] The clutch assembly provided in this embodiment has a simple structure and a reasonable design. By controlling the target clutch unit to separate the target drive shaft 522 from the drive wheel 521, the rotational speed of the target drive shaft 522 is reduced, so that the speed of the target traveling mechanism 300 corresponding to the target drive shaft 522 (i.e., the traveling mechanism 300 located on the inner side during turning) becomes smaller, and the operation is convenient.

[0072] As Figure 1 、 2 shown in Figures 4, 5, 6, 10, and 12, the clutch unit includes a clutch disc 523 and a first driving structure.

[0073] The clutch disc 523 is sleeved on the corresponding drive shaft 522, and the clutch disc 523 is in driving connection with the drive shaft 522. For example: a through hole is provided on the inner side of the clutch disc 523, and the through hole is non-circular (such as: polygon, ellipse, etc.), and the part of the drive shaft 522 corresponding to the clutch disc 523 is adapted to the through hole, or the inner side wall of the clutch disc 523 is connected to the outer side wall of the drive shaft 522 through a spline structure. So that the clutch disc 523 can not only drive the drive shaft 522 to rotate, but also move along the axis direction of the drive shaft 522.

[0074] And the clutch disc 523 can move along the axis direction of the drive shaft 522. The clutch disc 523 has a first position and a second position. When the clutch disc 523 is in the first position, the clutch disc 523 is combined with the drive wheel 521, so that the drive wheel 521 can drive the drive shaft 522 to rotate through the clutch disc 523. When the clutch disc 523 is in the second position, the clutch disc 523 is separated from the drive wheel 521, so that the drive wheel 521 cannot drive the drive shaft 522 to rotate.

[0075] The first driving structure is arranged on the fuselage 100. The first driving structure is in driving connection with the clutch disc 523, and the first driving structure is used to drive the clutch disc 523 from the first position to the second position or from the second position to the first position.

[0076] When turning, the target clutch disc 523 is driven to the second position through the target first driving structure, so that the target clutch disc 523 is separated from the rotating wheel, thereby reducing the speed of the target traveling mechanism 300 (i.e., the traveling mechanism 300 located on the inner side during turning), and further achieving the purpose of reducing the turning radius.

[0077] The clutch assembly provided in this embodiment has a simple structure and a reasonable design. By driving the clutch disc 523 from the first position to the second position or from the second position to the first position through the first driving structure, the purpose of combining or separating the clutch disc 523 from the transmission wheel 521 can be achieved, and the operation is convenient.

[0078] As Figure 1 、 2 shown in 4, 5, 6, 10, 12, the first driving structure includes a first elastic element 524 and a first cable 525.

[0079] Both ends of the first elastic element 524 are respectively connected to the transmission shaft 522 and the clutch disc 523. In the natural state, the first elastic element 524 applies an elastic force to the clutch disc 523, so that the clutch disc 523 has a tendency to move from the second position to the first position.

[0080] Optionally, the first elastic element 524 can be a spring, a rubber spring or any other element that can apply an elastic force to the clutch disc 523. As Figure 1 、 2 shown in 4, 5, 6, 10, 12, in this embodiment, the first elastic element 524 is a spring. The first elastic element 524 is sleeved on the transmission shaft 522, and both ends of the first elastic element 524 are respectively abutted against the transmission shaft 522 and the clutch disc 523. Specifically, the first elastic element 524 is a compression spring.

[0081] The first cable 525 is movably connected to the fuselage 100. Specifically, a first conduit 528 is provided on the fuselage 100, and the first cable 525 is movably inserted into the first conduit 528. The first end of the first cable 525 is connected to the clutch disc 523.

[0082] Specifically, in the natural state, under the action of the elastic force of the first elastic element 524, the clutch disc 523 is held in the first position; when turning, the second end of the first cable 525 is pulled, and the first cable 525 applies a pulling force to the clutch disc 523 to drive the clutch disc 523 to move from the first position to the second position against the elastic force of the first elastic element 524; after turning, the first cable 525 is released, and under the action of the elastic force of the first elastic element 524, the clutch disc 523 is driven from the second position to the first position.

[0083] The first driving structure provided in this embodiment has a simple structure and a reasonable design. By pulling the first cable 525, the purpose of driving the movement of the clutch disc 523 can be achieved, and the operation is convenient. Moreover, the first driving structure is flexibly connected to the clutch disc 523, and during the process of the clutch disc 523 being combined with the transmission wheel 521, the clutch disc 523 and the first driving structure will not be damaged.

[0084] As Figure 1 、2 As shown in Figures 4, 5, 6, 10, 12, and 14, the first driving structure also includes a toggle element 526.

[0085] The toggle element 526 is movably connected to the body 100, for example, by sliding connection, hinge connection, etc.

[0086] like Figure 1 , 2 As shown in FIGS. 4 , 5 , 6 , 10 , 12 , and 14 , in this embodiment, the first end of the toggle element 526 is hinged to the fuselage 100 , and the second end is connected to the first end of the first cable 525 .

[0087] The shifting element 526 is in transmission connection with the clutch disc 523 to drive the clutch disc 523 to move.

[0088] like Figure 1 , 2 As shown in FIGS. 4, 5, 6, 10, 12, and 14, in this embodiment, the outer peripheral wall of the clutch disk 523 is provided with a limiting groove, and the middle part of the toggle element 526 is provided with a toggle bayonet matched with the limiting groove, and the side wall of the toggle bayonet is clamped in the limiting groove. When in use, the purpose of moving the clutch disk 523 by moving the toggle element 526 can be achieved through the cooperation between the limiting groove and the toggle bayonet.

[0089] The first end of the first cable 525 is connected to the toggle element 526 so as to apply a pulling force to the toggle element 526 .

[0090] like Figure 14 As shown, in this embodiment, the toggle element 526 is provided with a limiting notch, and the first end of the first cable 525 passes through the limiting notch and is fixedly connected to the limiting element 527. Preferably, a limiting protrusion matching with the limiting element 527 is provided on one side of the limiting notch facing the limiting element 527 to prevent the limiting element 527 from moving toward the opening direction close to the limiting notch.

[0091] In the working state, the first cable 525 is pulled, the first cable 525 applies a pulling force to the shifting element 526, and the shifting element 526 applies a force to the clutch disc 523, so that the clutch disc 523 overcomes the elastic force of the first elastic element 524 and moves from the first position to the second position.

[0092] like Figure 1 , 4 As shown in , 8 and 10, the first driving structure also includes a first driving element.

[0093] The first driving element is arranged on the steering armrest 510, and the first driving element is movably connected to the steering armrest 510. The second end of the first cable 525 is connected to the first driving element. When steering, the first driving element is operated, and the first driving element applies a force to the clutch disc 523 through the first cable 525 to drive the clutch disc 523 to move from the first position to the second position. After the turning is completed, the first driving element is released, and under the action of the elastic force of the first elastic element 524, the clutch disc 523 is driven from the second position to the first position.

[0094] As Figure 1 , 4 , 8, 10 show, the first driving element is a driving handle 550, and the driving handle 550 is hinged to the steering armrest 510. When steering, the driving handle 550 is rotated, so as to apply a force to the clutch disc 523 through the first cable 525 to drive the clutch disc 523 to move from the first position to the second position.

[0095] As Figure 15 shown, on one side of the transmission wheel 521 facing the clutch disc 523, a first stop tooth structure is arranged, and on one side of the clutch disc 523 facing the transmission wheel 521, a second stop tooth structure is arranged. When the clutch disc 523 is in the first position, the first stop tooth structure and the second stop tooth structure are engaged. Under the mutual cooperation of the first stop tooth structure and the second stop tooth structure, the transmission wheel 521 drives the clutch disc 523 to rotate, so as to drive the transmission shaft 522 to rotate through the clutch disc 523, and further drive the running mechanism 300 to operate.

[0096] As Figure 8 , 9 shown, the differential steering assembly further includes a braking assembly, and the braking assembly is arranged on the fuselage 100. In the working state, when the clutch assembly separates the power input end of the target running mechanism 300 from the power output end of the driving device 200, the braking assembly brakes the target running mechanism 300 to quickly reduce the speed of the target running mechanism 300.

[0097] Specifically, when the clutch assembly separates the power input end of the target running mechanism 300 from the power output end of the driving device 200, the target running mechanism 300 is braked through the braking assembly, so that the inertial speed of the target running mechanism quickly returns to zero, thereby further realizing the effect that one side running mechanism 300 of the whole machine is stationary and the other side running mechanism 300 rotates around the stationary running mechanism 300, so as to achieve the purpose of minimizing the turning radius.

[0098] In the differential steering assembly provided in this embodiment, during a turn, through the mutual cooperation of the braking assembly and the clutch assembly, the speed of the target traveling mechanism 300 (i.e., the traveling mechanism 300 on the inner side during a turn) can be quickly reduced, so that the speed difference between the traveling mechanism on the inner side and the traveling mechanism 300 on the outer side can be quickly increased, and further the purpose of reducing the turning radius can be achieved.

[0099] As Figure 8 , 9 shown, the braking assembly includes two braking units respectively corresponding to the two traveling mechanisms 300, and each braking unit includes a braking element 531 and a second driving structure.

[0100] The braking element 531 is movably connected to the fuselage 100. The braking element 531 has a third position and a fourth position. When the braking element 531 is in the third position, the braking element 531 is separated from the power transmission element of the corresponding traveling mechanism 300, so that no resistance is applied to the power input end of the traveling structure. When the braking element 531 is in the fourth position, the braking element 531 abuts against the power input end of the corresponding traveling mechanism 300 and applies a resistance to the power input end of the traveling mechanism 300 to reduce the speed of the traveling mechanism 300, so as to achieve the purpose of braking the traveling mechanism 300.

[0101] It should be noted here that the above resistance can be either the frictional force generated by the braking element 531 abutting against the power transmission element of the traveling mechanism 300, or the resistance generated by the cooperation of the first blocking portion of the braking element 531 and the second blocking portion on the power transmission element of the traveling mechanism 300, or a combination of the above two.

[0102] At the same time, it should be noted that the power transmission element of the above traveling mechanism can be a drive shaft 522, a driving wheel 310, a driven wheel 320, etc., all power transmission elements located at the rear end of the clutch assembly. As Figure 9 shown, in this embodiment, the power transmission element is the driving wheel 310.

[0103] As Figure 9 shown, in this embodiment, the resistance is the resistance generated by the cooperation of the first blocking portion 501 of the braking element 531 and the second blocking portion 311 of the driving wheel 310 of the traveling mechanism 300.

[0104] As Figure 4 , 5 , 7, 10, 13 shown, in this embodiment, when the braking element 531 is in the third position, the braking element 531 is separated from the driving wheel 310 of the corresponding traveling mechanism 300, so that no resistance is applied to the driving wheel 310.

[0105] When the brake element 531 is in the fourth position, the brake element 531 contacts the side wall of the driving wheel 310 and applies resistance to the driving wheel 310 to reduce the speed of the traveling mechanism 300, thereby achieving the purpose of braking the traveling mechanism 300 and further achieving the purpose of reducing the turning radius.

[0106] like Figure 9 As shown, when the brake element 531 is in the third position, the first blocking portion 501 on the brake element 531 cooperates with the second blocking portion 311 on the driving wheel 310 to generate the above resistance, so as to achieve the purpose of braking the walking mechanism 300.

[0107] Two groups of second blocking parts 311 are provided. The two groups of second blocking parts 311 are respectively arranged on both sides of the driving wheel 310 , and each group has multiple second blocking parts 311 . The multiple second blocking parts 311 in each group are evenly arranged around the rotation center line of the driving wheel 310 .

[0108] The second driving structure is disposed on the fuselage 100 , and the second driving structure is drivingly connected to the braking element 531 , and the second driving structure is used to drive the braking element 531 from the third position to the fourth position or from the fourth position to the third position.

[0109] When turning, the target second driving structure drives the target braking element 531 to the fourth position, so that the target braking element 531 conflicts with the power input end of the target traveling mechanism 300 to reduce the speed of the target traveling mechanism 300, thereby achieving the purpose of reducing the turning radius.

[0110] The brake assembly provided in this embodiment has a simple structure and a reasonable design. The brake element 531 is driven from the third position to the fourth position or from the fourth position to the third position by the second drive mechanism, so as to achieve the purpose of braking or releasing the brakes on the target walking mechanism 300. The operation is convenient, and the second drive structure is flexibly connected to the brake element 531. During the process of combining the brake element 531 with the walking mechanism, no damage is caused to the walking mechanism and the second drive structure.

[0111] like Figure 4 , 5 As shown in , 7, 10, and 13, the second driving structure includes a second elastic element 532 and a second cable 533.

[0112] The first end of the second elastic element 532 is connected to the brake element 531 and the second end is connected to the fuselage 100. In a natural state, the second elastic element 532 applies elastic force to the brake element 531 so that the brake element 531 tends to move from the fourth position to the third position.

[0113] Optionally, the second elastic element 532 may be a spring, a rubber spring, or any other element that can apply elastic force to the clutch disc 523. As Figure 4 , 5 , as shown in Figures 7, 10, and 13, in this embodiment, the second elastic element 532 is a spring. The second elastic element 532 is sleeved on the transmission shaft 522, and both ends of the second elastic element 532 are in contact with the transmission shaft 522 and the clutch disc 523 respectively. Specifically, the second elastic element 532 is a tension spring.

[0114] The second cable 533 is movably connected to the fuselage 100. Specifically, a second conduit 537 for guiding the second cable 533 is provided on the fuselage 100, and the second cable 533 is movably inserted into the second conduit 537. The first end of the second cable 533 is connected to the braking element 531.

[0115] In the natural state, the elastic force exerted by the second elastic element 532 on the braking element 531 holds the braking element 531 in the third position; when turning, the second cable 533 is pulled, and the second cable 533 exerts a pulling force on the braking element 531 to drive the braking element 531 to move from the third position to the fourth position against the elastic force of the second elastic element 532; after turning, the second cable 533 is released, and under the action of the elastic force of the second elastic element 532, the braking element 531 is driven from the fourth position to the third position.

[0116] In this embodiment, the provided second driving structure has a simple structure, reasonable design, and by pulling the second cable 533, the purpose of driving the movement of the braking element 531 can be achieved, and the operation is convenient.

[0117] As Figure 1 , 4 , as shown in Figures 8, 10, the second driving structure further includes a second driving element.

[0118] The second driving element is provided on the steering armrest 510 and is movably connected to the steering armrest 510. The second end of the second cable 533 is connected to the second driving element. When turning, the second driving element is operated, and the second driving element exerts a force on the braking element 531 through the second cable 533 to drive the braking element 531 to move from the third position to the fourth position.

[0119] As Figure 1 , 4 , as shown in Figures 8, 10, the second driving element is a driving handle 550, and the driving handle 550 is hinged to the steering armrest 510. When turning, the driving handle 550 is rotated, so as to exert a force on the braking element 531 through the second cable 533 to drive the braking from the third position to the fourth position.

[0120] As Figure 9 ,13 As shown, the braking element 531 is sleeved on the first end of the rotating shaft 534 and fixedly connected to the rotating shaft 534. The second end of the rotating shaft 534 is rotatably connected to the fuselage 100.

[0121] The second driving structure further includes a transmission element 535. The transmission element 535 is sleeved on the rotating shaft 534 and fixedly connected to the rotating shaft 534. The first end of the second elastic element 532 is connected to the first end of the transmission element 535, and the second end is connected to the fuselage 100. The first end of the second cable 533 is connected to the second end of the transmission element 535. Specifically, a connection through-hole is provided at the second end of the transmission element 535. A connection element 536 is fixedly connected to the first end of the second cable 533. The connection element 536 is connected to the transmission element 535 through the connection through-hole. Specifically, the connection element 536 is in a hook shape or a Z shape.

[0122] In the natural state, the elastic force exerted by the second elastic element 532 on the transmission element 535 causes the transmission element 535 to exert a force on the braking element 531 through the rotating shaft 534, thereby holding the braking element 531 in the third position. When turning, the second cable 533 is pulled. The second cable 533 exerts a pulling force on the transmission element 535. The transmission element 535 exerts a force on the braking element 531 through the rotating shaft 534, thereby driving the braking element 531 to move from the third position to the fourth position against the elastic force of the second elastic element 532. After turning is completed, the second cable 533 is released. Under the action of the elastic force of the second elastic element 532, the braking element 531 is driven from the fourth position to the third position.

[0123] As Figure 1 、 4 As shown in FIGS. 8 and 10, the first driving element and the second driving element are the same driving handle 550 provided on the steering armrest 510. A third cable 541 is provided on the fuselage 100. The third cable 541 is movably connected to the fuselage 100. Specifically, a third conduit 542 for guiding the third cable 541 is provided on the fuselage 100. The third cable 541 is movably inserted into the third conduit 542. The first cable 525 and the second cable 533 are both connected to the driving handle 550 through the third cable 541. Thus, when controlling the target clutch unit to separate the target traveling mechanism 300 from the transmission wheel 521, the target braking unit is synchronously controlled to brake the target traveling mechanism 300, which not only makes the structure of the differential steering assembly simpler but also makes the operation more convenient.

[0124] Specifically, when the driving handle 550 is rotated, the driving handle 550 simultaneously pulls the first cable 525 and the second cable 533 through the third cable 541, thereby applying tension to the clutch disc 523 and the brake element 531 at the same time, so as to achieve the purpose of separating the power input end of the target walking mechanism 300 from the power output end of the drive device, and braking the target walking mechanism, so as to achieve the purpose of quickly returning the inertia speed of the walking mechanism on the separated side to zero, and further achieve the effect that the walking mechanism 300 on one side of the whole machine is stationary and the walking mechanism 300 on the other side rotates around the stationary walking mechanism 300, so as to achieve the purpose of maximizing the reduction of the turning radius.

[0125] like Figure 16 As shown, the utility model also provides a snow sweeper, including a body 100, a driving device 200 is arranged on the body 100, and a walking mechanism 300 is arranged on the left and right sides of the body 100 and is connected to the driving device 200. A snow sweeping mechanism 400 is arranged at the front end of the body 100 and is connected to the driving device 200. In the working state, the driving device 200 transmits power to the walking mechanism 300 and the snow sweeping mechanism 400, so that the walking mechanism 300 and the snow sweeping mechanism 400 are operated, so that the purpose of snow sweeping is achieved in the process of moving forward.

[0126] Optionally, the driving device 200 can be any device that can provide driving force, such as a driving motor, an engine, etc. In this embodiment, the driving device 200 is an engine.

[0127] like Figure 16 As shown, optionally, the walking mechanism 300 includes a driving wheel 310 , a driven wheel 320 and a crawler track 330 .

[0128] The driving wheel 310 and the driven wheel 320 are rotatably arranged on the fuselage 100. The crawler 330 is annular, and the crawler 330 is sleeved on the driving wheel 310 and the driven wheel 320 and can rotate with the rotation of the driving wheel 310 and the driven wheel 320. In this embodiment, two driven wheels 320 are provided, and the driving wheel 310 and the two driven wheels 320 are arranged on the fuselage 100 in a triangle.

[0129] The fuselage 100 is also provided with a differential steering assembly as described in any of the above embodiments.

[0130] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the specification of the present invention.

Claims

1. A differential steering assembly is provided on a fuselage (100). A driving device is provided on the fuselage (100). Travel mechanisms (300) that are in transmission connection with the driving device are provided on the left and right sides of the fuselage (100). The differential steering assembly includes a steering handrail (510). The steering handrail (510) is provided at the rear end of the fuselage (100), and is characterized in that, It further includes a clutch assembly, which is arranged on the fuselage (100), and the driving device is in transmission connection with the traveling mechanism (300) through the clutch assembly; When turning, the clutch assembly separates the power input end of the target traveling mechanism (300) from the power output end of the driving device to reduce the speed of the target traveling mechanism (300), so that the speed of the traveling mechanism (300) located on the inner side is less than the speed of the traveling mechanism (300) located on the outer side.

2. The differential steering assembly according to claim 1, characterized in that, The clutch assembly includes: A transmission wheel (521), which is rotatably connected to the fuselage (100) and is in transmission connection with the power output shaft of the driving device; A transmission shaft (522), which is arranged on the fuselage (100) and is rotatably connected to the fuselage (100). There are two transmission shafts (522). Both of the two transmission shafts (522) are coaxially arranged with the transmission wheel (521), and the first ends of the two transmission shafts (522) are rotatably connected to the transmission wheel (521), and the second ends are respectively in transmission connection with the two traveling mechanisms (300); and Two clutch units, which are respectively arranged on both sides of the transmission wheel (521). In the working state, the clutch unit combines the corresponding transmission shaft (522) with the transmission wheel (521) so that the transmission wheel (521) can drive the transmission shaft (522) to rotate. In the non-working state, the clutch unit separates the corresponding transmission shaft (522) from the transmission wheel (521) so that the transmission wheel (521) cannot drive the transmission shaft (522) to rotate.

3. The differential steering assembly according to claim 2, wherein The clutch unit includes: A clutch disc (523), which is sleeved on the corresponding transmission shaft (522) and is in transmission connection with the transmission shaft (522). It can move along the axis direction of the transmission shaft (522), and it has a first position and a second position; Wherein, when the clutch disc (523) is in the first position, the clutch disc (523) is combined with the transmission wheel (521) so that the transmission wheel (521) can drive the transmission shaft (522) to rotate through the clutch disc (523); When the clutch disc (523) is in the second position, the clutch disc (523) is separated from the transmission wheel (521) so that the transmission wheel (521) cannot drive the transmission shaft (522) to rotate; and A first driving structure, which is arranged on the fuselage (100) and is in transmission connection with the clutch disc (523). It is used to drive the clutch disc (523) from the first position to the second position or from the second position to the first position.

4. The differential steering assembly according to claim 3, wherein, The first driving structure includes: A first elastic element (524), the two ends of which are respectively connected to the transmission shaft (522) and the clutch disc (523), and in the natural state, it applies an elastic force to the clutch disc (523) so that the clutch disc (523) has a tendency to move from the second position to the first position; and A first cable (525) is movably connected to the fuselage (100), and a first end of the first cable is connected to the clutch disc (523).

5. The differential steering assembly according to claim 4, wherein, The first driving structure further comprises a toggle element (526), the toggle element (526) being movably connected to the body (100), and the toggle element (526) being transmission-connected to the clutch disk (523) to drive the clutch disk (523) to move; The first end of the first cable (525) is connected to the shifting element (526).

6. The differential steering assembly according to any one of claims 1-5, characterized in that, It also includes a brake assembly, which is arranged on the fuselage (100). In a working state, when the clutch assembly causes the power input end of the target walking mechanism (300) to be separated from the power output end of the drive device, the brake assembly brakes the target walking mechanism (300) to quickly reduce the speed of the target walking mechanism (300).

7. The differential steering assembly according to claim 6, characterized in that, The brake assembly comprises two brake units corresponding to the two walking mechanisms (300) respectively, and the brake units comprise: a brake element (531) movably connected to the fuselage (100) and having a third position and a fourth position; Wherein, when the braking element (531) is in the third position, the braking element (531) is separated from the corresponding power transmission element of the walking mechanism (300); When the brake element (531) is in the fourth position, the brake element (531) contacts the corresponding power transmission element of the walking mechanism (300), thereby applying resistance to the power transmission element of the walking mechanism (300) to reduce the speed of the walking mechanism (300); and A second driving structure is arranged on the fuselage (100) and is drivingly connected to the braking element (531), and is used to drive the braking element (531) from the third position to the fourth position or from the fourth position to the third position.

8. The differential steering assembly according to claim 7, wherein, The second driving structure comprises: a second elastic element (532), a first end of which is connected to the braking element (531) and a second end of which is connected to the fuselage (100), and in a natural state, applies elastic force to the braking element (531) so that the braking element (531) has a tendency to move from the fourth position to the third position; and A second cable (533) is movably connected to the fuselage (100), and a first end of the second cable is connected to the braking element (531).

9. The differential steering assembly according to claim 8, characterized in that, The braking element (531) is sleeved on a first end of a rotating shaft (534) and is fixedly connected to the rotating shaft (534); and a second end of the rotating shaft (534) is rotatably connected to the fuselage (100); The second driving structure further comprises a transmission element (535), wherein the transmission element (535) is sleeved on the rotating shaft (534) and fixedly connected to the rotating shaft (534); The first end of the second elastic element (532) is connected to the first end of the transmission element (535), and the second end is connected to the fuselage (100); The first end of the second cable (533) is connected to the transmission element (535).

10. A snow sweeper, comprising a fuselage (100), a driving device arranged on the fuselage, traveling mechanisms (300) arranged on the left and right sides of the fuselage (100), and a snow sweeping mechanism (400) arranged at the front end of the fuselage (100), characterized in that, It further includes the differential steering assembly according to any one of claims 1-9.

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