A drive assembly for a snow removal apparatus, a snow removal device and a snow removal apparatus

Abstract

The utility model relates to the equipment of using drive device snow removal, especially drive assembly, snow removal device and snow removal equipment of snow removal equipment for solving the technical problem that the existing drive assembly needs to remove multiple key components to replace the snow blade, leads to the technical problem of low maintenance efficiency. The drive assembly of the snow removal equipment, including motor, driving wheel, driven wheel, power output shaft, fixed bolt, bearing and adapter sleeve, provides transition connection through the adapter sleeve, utilizes the first limit ring to combine fixed bolt and limits the axial position of power output shaft, and realizes reverse thrust limit through the second limit ring and the convex, so that power output shaft can be positioned / released quickly through fixed bolt.

Description

Technical Field

[0001] This utility model relates to a snow removal device using a drive mechanism, and particularly to a drive component, a snow removal device, and a snow removal equipment. Background Technology

[0002] Chinese patent CN220521204U discloses a drive assembly for a snow removal device, including a motor, a power output shaft, a drive wheel, a driven wheel, and a synchronous belt. The drive wheel and the driven wheel are connected by a synchronous belt drive. The power output shaft is inserted into the driven wheel and a fixed bushing is provided between the power output shaft and the driven wheel. The power output shaft and the fixed bushing are fixed by a fastener. The power output shaft is configured to drive the snow sweeping blades of the snow removal device to rotate.

[0003] As the actuator that directly contacts the snow and performs physical sweeping, the snow-rolling blade will wear out after working for a long time. When repairing or replacing the snow-rolling blade, the driven wheel is fastened to the power output shaft through a fixed bushing and fasteners. Therefore, the motor, drive wheel, driven wheel and timing belt must be removed before the snow-rolling blade can be removed, which makes the maintenance operation complicated and time-consuming. Utility Model Content

[0004] The present invention aims to provide a drive component, a snow removal device, and a snow removal equipment, which can solve the technical problem that existing drive components require the removal of multiple key components before the snow-rolling blades can be replaced, resulting in low maintenance efficiency.

[0005] A drive assembly for a snow removal device includes a motor, a drive wheel, a driven wheel, and a power output shaft arranged sequentially along the power transmission direction; the driven wheel has a central through hole, the input end of the power output shaft is located in the central through hole, and the output end is used to drive the snow sweeping blades of the snow removal device to rotate;

[0006] Its special feature is that it also includes fixing bolts and bearings;

[0007] The input end of the power output shaft extends sequentially into the inner ring of the bearing and the central through hole, and an adapter sleeve is provided between the inner ring of the bearing and the central through hole; the outer ring of the bearing is used to fix it to the housing of the snow removal equipment;

[0008] A radially protruding ring is provided at one end of the inner wall of the central through hole as a first limiting ring. The tail of the fixing bolt passes through the first limiting ring and is fixed to the input end of the power output shaft, while the head abuts against the outer end face of the first limiting ring.

[0009] One end of the adapter sleeve abuts against the inner end face of the first limiting ring, and the other end extends out of the inner ring of the bearing and is fitted with a second limiting ring. The side wall of the power output shaft is provided with a protrusion, which presses the second limiting ring against the end face of the inner ring of the bearing.

[0010] Optionally, the driven wheel is provided with an axial protrusion ring at the opening of the central through hole, the inner side wall of the axial protrusion ring is provided with the first limiting ring, the outer side wall is provided with an annular groove, and a clamp is provided in the annular groove for clamping the adapter sleeve.

[0011] Optionally, the axial convex ring includes a first convex ring and a second convex ring connected sequentially along the direction away from the driven wheel;

[0012] The inner diameter of the first convex ring is larger than the inner diameter of the second convex ring, and the inner circumference of the second convex ring forms the first limiting ring;

[0013] The first and second convex rings have the same outer diameter and are fitted with a concave-convex joint. The annular groove is provided on the outer side wall of the first and second convex rings.

[0014] Optionally, the second convex ring has A axially extending positioning teeth evenly distributed on the end face of the first convex ring near the first convex ring; the first convex ring is provided with A external positioning grooves, and the adapter sleeve is provided with A internal positioning grooves, the corresponding external positioning grooves are connected to the internal positioning grooves and are adapted to the corresponding positioning teeth; A is a positive integer.

[0015] Optionally, the input end of the power output shaft has an external spline structure, the inner wall of the adapter sleeve has an internal spline structure, and the input end of the power output shaft is slidably engaged with the inner wall of the adapter sleeve.

[0016] The outer wall of the adapter sleeve and the inner wall of the central through hole are in a transition fit or an interference fit.

[0017] Optionally, it may also include multiple connection keys;

[0018] The side wall of the input end of the power output shaft and the inner wall of the adapter sleeve are provided with multiple corresponding keyways, and two corresponding keyways are connected by a connecting key.

[0019] The outer wall of the adapter sleeve and the inner wall of the central through hole are in a transition fit.

[0020] Optionally, both ends of the driven wheel are provided with an annular groove between the axial convex ring and the outer periphery of the driven wheel, and a plurality of weight-reducing through holes are provided on the annular groove.

[0021] Optionally, the axial length of the annular groove is 15% to 30% of the thickness of the driven wheel end face.

[0022] This utility model also provides a snow removal device, which is characterized by including a housing, snow sweeping blades disposed on the housing, and a drive assembly of the aforementioned snow removal device.

[0023] This utility model also provides a snow removal device, which is characterized in that it includes a self-moving device and the above-mentioned snow removal device disposed on the self-moving device.

[0024] The housing is mounted on the self-moving device.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] (1) The present invention provides a drive assembly for a snow removal device, including a motor, a drive wheel, a driven wheel, a power output shaft, a fixing bolt, a bearing, and an adapter sleeve; the adapter sleeve provides a transition connection, the first limiting ring combined with the fixing bolt limits the axial position of the power output shaft, and the second limiting ring and the protrusion achieve reverse thrust limiting, so that the power output shaft can be quickly positioned / released by the fixing bolt; the present invention achieves quick assembly and disassembly of the power output shaft while ensuring drive efficiency and structural strength, so as to facilitate the maintenance or replacement of snow rolling blades and solve the problem of large-scale disassembly required in the original design.

[0027] (2) In this utility model, by setting an integrated axial protruding ring and combining it with a clamp, the quick clamping and loosening of the adapter sleeve is realized, replacing the original structure of the bushing and the fastener, and improving the ease of disassembly and assembly.

[0028] (3) The axial convex ring of this utility model is connected in sequence by the first convex ring and the second convex ring, which facilitates the replacement of the second convex ring and reduces maintenance costs. In addition, the first convex ring and the second convex ring adopt a concave-convex fit, which can realize automatic positioning and assembly of the two, and reduce displacement or rotational loosening caused by vibration during operation.

[0029] (4) In this utility model, the positioning tooth block is simultaneously embedded in the corresponding outer positioning groove and inner positioning groove, which can ensure the stable positioning and anti-rotation performance of the power output shaft under high load and high vibration conditions.

[0030] (5) In this utility model, by setting a second limiting ring on the adapter sleeve and using the protruding structure of the output shaft side wall to press it against the inner ring end face of the bearing, and adding bolts to limit the relative bushing, this utility model realizes the tight linkage between the bearing and the adapter sleeve, and uses the protruding structure to generate a self-locking / pressing effect, reducing the operation of loosening or disassembly requiring tools. Attached Figure Description

[0031] Figure 1 Axonometric projection of an embodiment of a snow removal device according to this utility model Figure 1 ;

[0032] Figure 2 Axonometric projection of this utility model embodiment Figure 2 ;

[0033] Figure 3 This is a radial cross-sectional view of an embodiment of the present utility model;

[0034] Figure 4This is an isometric view of the driven wheel and the first convex ring in an embodiment of this utility model;

[0035] Figure 5 This is a front view of the second convex ring in an embodiment of the present invention;

[0036] Figure 6 This is a front view of the second convex ring in an embodiment of the present invention;

[0037] Figure 7 This is an isometric view of the adapter sleeve in an embodiment of this utility model.

[0038] The reference numerals in the attached drawings are explained as follows: 01-Bearing housing; 10-Driven wheel; 11-First limiting ring; 12-Axial convex ring; 121-First convex ring; 122-Second convex ring; 123-Annular groove; 124-Positioning tooth block; 125-Outer positioning groove; 13-Second limiting ring; 14-Annular groove; 15-Weight reduction through hole; 20-Power output shaft; 21-Protrusion; 30-Adapter sleeve; 31-Inner positioning groove; 4-Fixing bolt; 5-Bearing; 6-Clamp. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] A snow removal device includes a self-moving device and a snow removal apparatus mounted on the self-moving device;

[0041] Understandably, the self-moving device refers to an intelligent device that does not require external power traction and relies on its own configured power system and control system to achieve autonomous or semi-autonomous movement, obstacle avoidance, navigation and task execution.

[0042] The snow removal device includes a housing mounted on the self-moving device, snow sweeping blades mounted on the housing, and a drive assembly for the snow removal device. The snow sweeping blades are mounted on the drive end (output end of the power output shaft 20) of the drive assembly for the snow removal device and are used to scrape, collect, and deliver snow to a designated location by rotation. Specifically, the snow sweeping blades are spiral blades or roller brush blades.

[0043] Reference Figures 1-7 The drive assembly of the snow removal equipment includes a motor, a drive wheel, a driven wheel 10 and a power output shaft 20 arranged sequentially along the power transmission direction, as well as a fixing bolt 4 and a bearing 5.

[0044] The driven wheel 10 has a central through hole, the input end of the power output shaft 20 is located in the central through hole, and the output end is used to drive the snow sweeping blades of the snow removal equipment to rotate.

[0045] The input end of the power output shaft 20 extends sequentially into the inner ring and central through hole of the bearing 5, and an adapter sleeve 30 is provided between the power output shaft 20 and the inner ring and central through hole of the bearing 5; the outer ring of the bearing 5 is used to fix it to the housing of the snow removal equipment; a radially protruding ring is provided at one end of the inner wall of the central through hole as a first limiting ring 11, the tail of the fixing bolt 4 passes through the first limiting ring 11 and is fixed to the input end of the power output shaft 20, and the head abuts against the outer end face of the first limiting ring 11; one end of the adapter sleeve 30 abuts against the inner end face of the first limiting ring 11, and the other end extends out of the inner ring of the bearing 5 and is fitted with a second limiting ring 13; a protrusion 21 is provided on the side wall of the power output shaft 20, and the protrusion 21 presses the second limiting ring 13 against the end face of the inner ring of the bearing 5.

[0046] Understandably, the two ends of the power output shaft 20 are the input end and the output end respectively along the power transmission direction; the bearing 5 is used to fix it on the housing of the snow removal equipment, and its purpose is to support the rotation of the power output shaft 20; the adapter sleeve 30 is used to provide an axial transition connection, guide and position to reduce interference, enhance the axial assembly accuracy and disassembly, and the outer wall of the adapter sleeve 30 and the inner wall of the central through hole are a transition fit or an interference fit; the limiting ring combined with the fixing bolt 4 is used to limit the position of the power output shaft 20, prevent axial movement, and make the power output shaft 20 quickly positioned / released by fixing bolt 4.

[0047] Reference Figures 1-3 The outer ring of the bearing 5 is used to fix it to the housing of the snow removal equipment. Specifically, the outer ring of the bearing 5 is used to make a transition or interference fit with the bearing seat 01, which is disposed on the housing of the snow removal equipment. In other embodiments, the outer ring of the bearing 5 is provided with a flange structure, which can be fixed to the housing plane of the snow removal equipment by screws; this arrangement is simple to assemble and easy to maintain.

[0048] Reference Figures 1-2 , Figure 4 Both the driving pulley and the driven pulley 10 are toothed pulleys, connected by a toothed synchronous belt drive. In other embodiments, both the driving pulley and the driven pulley 10 can be gears, driven by meshing, to improve reliability, lifespan, and load capacity.

[0049] Reference Figures 2-3 , Figure 7 In this embodiment, the second limiting ring 13 cooperates with the protrusion 21 to achieve a tight linkage between the bearing 5 and the adapter sleeve 30. The structure of the protrusion 21 generates a self-locking / pressing effect, reducing the need for loosening or tool disassembly. The second limiting ring 13 can be a radially outward protruding ring (integrated with the adapter sleeve 30) provided on the outer wall of the adapter sleeve 30, or a radially inward concave ring provided on the outer wall of the adapter sleeve 30, with a retaining ring inside the radially inward concave ring serving as the second limiting ring 13.

[0050] In other embodiments, the other end of the adapter sleeve 30 is fitted with a second limiting ring 13 located between the inner ring end face of the bearing 5 and the driven wheel 10; the second limiting ring 13 abuts against the inner ring end face of the bearing 5 and the driven wheel 10 to form a limiting surface, preventing the adapter sleeve 30 from moving inward into the bearing 5 due to the reaction force during operation.

[0051] In some embodiments, refer to Figure 1 , Figure 3 The driven wheel 10 has an axial protruding ring 12 at the opening of the central through hole. The first limiting ring 11 is provided on the inner side wall of the axial protruding ring 12, and an annular groove 123 is provided on the outer side wall. A clamp 6 is provided in the annular groove 123 to clamp the adapter sleeve 30, limit its radial sway and enhance the stability of the fit.

[0052] In some embodiments, refer to Figure 1 , Figures 3-6 The axial convex ring 12 includes a first convex ring 121 and a second convex ring 122 connected sequentially in a direction away from the driven wheel 10; the inner diameter of the first convex ring 121 is larger than the inner diameter of the second convex ring 122, and the inner circumference of the second convex ring 122 forms the first limiting ring 11; the outer diameters of the first convex ring 121 and the second convex ring 122 are equal, and they are fitted together to prevent rotation; the annular groove 123 is provided on the outer side wall of the first convex ring 121 and the second convex ring 122.

[0053] Understandably, the axial convex ring 12 is not a single piece, but rather consists of two parts (first convex ring 121 and second convex ring 122) connected sequentially. This is because the second convex ring 122 is subjected to greater force and requires frequent replacement. This design allows for quick replacement and reduces costs. The outer diameters of the first convex ring 121 and the second convex ring 122 are equal, forming a continuous cylindrical outer wall. The annular groove 123 is on this continuous cylindrical outer wall, ensuring a uniform clamping effect. Depending on the clamping force requirements, the clamp 6 can be either a self-clamping elastic clamp 6 or a double-screw pressure ring.

[0054] In some embodiments, refer to Figure 1 , Figures 3-7 The second convex ring 122 has A axially extending positioning teeth 124 evenly distributed on the end face of the second convex ring 122 near the first convex ring 121; the first convex ring 121 is provided with A external positioning grooves 125, and the adapter sleeve 30 is provided with A internal positioning grooves 31. The corresponding external positioning grooves 125 and internal positioning grooves 31 are connected and adapted to the corresponding positioning teeth 124; A is a positive integer, and in this embodiment, A is 2.

[0055] Understandably, the corresponding outer positioning groove 125 and inner positioning groove 31 form a continuous positioning groove, and the positioning tooth block 124 is inserted into the continuous positioning groove to form a rigid axial locking and anti-rotation connection.

[0056] In some embodiments, the input end of the power output shaft 20 has an external spline structure, and the inner wall of the adapter sleeve 30 has an internal spline structure, such as... Figure 7 As shown, the input end of the power output shaft 20 is slidably engaged with the inner wall of the adapter sleeve 30, which can ensure reliable torque transmission and flexible insertion and removal; the outer wall of the adapter sleeve 30 and the inner wall of the central through hole are in transition fit or interference fit.

[0057] The disassembly process is as follows: remove the fixing bolts 4 from the outside, pull out the power output shaft 20, and leave the rest of the components in their original positions without disassembly.

[0058] In other embodiments, multiple connecting keys are also included, specifically flat keys or semi-circular keys;

[0059] The input end sidewall of the power output shaft 20 and the inner wall of the adapter sleeve 30 are provided with multiple corresponding keyways, and two corresponding keyways are connected by a connecting key; the outer wall of the adapter sleeve 30 and the inner wall of the central through hole are in transition fit, allowing insertion and removal without shaking.

[0060] The disassembly process is as follows: remove the fixing bolts 4 from the outside, pull out the power output shaft 20 and the adapter sleeve 30, and leave the other parts in their original positions without disassembly.

[0061] In some embodiments, refer to Figure 1 , Figures 3-4 Both ends of the driven wheel 10 have annular grooves 14 between the axial convex ring 12 and the outer periphery of the driven wheel 10. The annular grooves 14 are provided with a plurality of circumferentially distributed weight-reducing through holes 15. The purpose is to reduce the overall mass of the driven wheel 10 and reduce the inertia of the system while maintaining the mass symmetry during rotation.

[0062] Specifically, the axial length of the annular groove 14 is 15% to 30% of the thickness of the end face of the driven wheel 10 to avoid weakening its strength; the number of weight-reducing through holes 15 can be 4, 6, 8, or 12.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. For those skilled in the art, modifications can be made to the specific technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions protected by the present invention.

Claims

1. A drive assembly for a snow removal device, comprising a motor, a drive wheel, a driven wheel (10), and a power output shaft (20) arranged sequentially along the power transmission direction; the driven wheel (10) has a central through hole, the input end of the power output shaft (20) is located in the central through hole, and the output end is used to drive the snow sweeping blades of the snow removal device to rotate; Its features are: It also includes fixing bolts (4) and bearings (5); The input end of the power output shaft (20) extends sequentially into the inner ring and the central through hole of the bearing (5), and an adapter sleeve (30) is provided between the bearing (5) and the inner ring and the central through hole; the outer ring of the bearing (5) is used to fix it to the housing of the snow removal equipment; A radially protruding ring is provided at one end of the inner wall of the central through hole as a first limiting ring (11). The tail of the fixing bolt (4) passes through the first limiting ring (11) and is fixed to the input end of the power output shaft (20), while the head abuts against the outer end face of the first limiting ring (11). One end of the adapter sleeve (30) abuts against the inner end face of the first limiting ring (11), and the other end extends out of the inner ring of the bearing (5) and is fitted with a second limiting ring (13). The side wall of the power output shaft (20) is provided with a protrusion (21), which presses the second limiting ring (13) against the inner ring end face of the bearing (5).

2. The driving component of a snow removal device according to claim 1, characterized in that: The driven wheel (10) has an axial protrusion ring (12) at the opening of the central through hole. The inner side wall of the axial protrusion ring (12) is provided with the first limiting ring (11), and the outer side wall is provided with an annular groove (123). A clamp (6) is provided in the annular groove (123) for clamping the adapter sleeve (30).

3. The driving component of a snow removal device according to claim 2, characterized in that: The axial convex ring (12) includes a first convex ring (121) and a second convex ring (122) connected sequentially in a direction away from the driven wheel (10); The inner diameter of the first convex ring (121) is larger than the inner diameter of the second convex ring (122), and the inner circumference of the second convex ring (122) forms the first limiting ring (11); The outer diameters of the first convex ring (121) and the second convex ring (122) are equal and they are fitted together. The annular groove (123) is provided on the outer sidewall of the first convex ring (121) and the second convex ring (122).

4. The driving component of a snow removal device according to claim 3, characterized in that: The second convex ring (122) has A axially extending positioning teeth (124) evenly distributed on the end face of the second convex ring (121) near the first convex ring (121); the first convex ring (121) is provided with A external positioning grooves (125), and the adapter sleeve (30) is provided with A internal positioning grooves (31). The corresponding external positioning grooves (125) are connected to the internal positioning grooves (31) and are adapted to the corresponding positioning teeth (124); A is a positive integer.

5. A drive assembly for a snow removal device according to any one of claims 1 to 4, characterized in that: The input end of the power output shaft (20) has an external spline structure, and the inner wall of the adapter sleeve (30) has an internal spline structure. The input end of the power output shaft (20) is slidably engaged with the inner wall of the adapter sleeve (30). The outer wall of the adapter sleeve (30) and the inner wall of the central through hole are in a transition fit or an interference fit.

6. A drive assembly for a snow removal device according to any one of claims 1 to 4, characterized in that: It also includes multiple connection keys; The input end sidewall of the power output shaft (20) and the inner wall of the adapter sleeve (30) are provided with multiple corresponding keyways, and two corresponding keyways are connected by a connecting key. The outer wall of the adapter sleeve (30) and the inner wall of the central through hole are in a transition fit.

7. The driving component of a snow removal device according to claim 1, characterized in that: Both ends of the driven wheel (10) are provided with annular grooves (14) between the axial convex ring (12) and the outer periphery of the driven wheel (10), and multiple weight-reducing through holes (15) are provided on the annular grooves (14) evenly distributed around the circumference.

8. The driving assembly of a snow removal device according to claim 7, characterized in that: The axial length of the annular groove (14) is 15% to 30% of the thickness of the end face of the driven wheel (10).

9. A snow removal device, characterized in that: It includes a housing, snow sweeping blades disposed on the housing, and a drive assembly for the snow removal device according to any one of claims 1 to 8.

10. A snow removal device, characterized in that: Includes a self-moving device and the snow removal device of claim 9, which is mounted on the self-moving device; The housing is mounted on the self-moving device.

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