A detachable auxiliary wheel structure for a snowplow

Abstract

This utility model discloses a detachable auxiliary wheel structure for a snowplow, including a main frame for mounting the main body of the snowplow and providing support; and a wheel frame detachably mounted at the bottom of the main frame; the wheel frame is equipped with several auxiliary wheels; the wheel frame has a snap-fit ​​part, and the main frame has a snap-fit ​​groove that mates with the snap-fit ​​part; the wheel frame engages with the main frame through the snap-fit ​​part to achieve quick assembly and disassembly; this utility model achieves tool-free quick assembly and disassembly of the wheel frame and the main frame through the elastic snap-fit ​​between the snap-fit ​​part and the snap-fit ​​groove, significantly improving operating efficiency; the design of the wheel frame being completely separable greatly reduces the storage volume of the snowplow, facilitating storage, transportation, and replacement; the synergistic effect of the plug / slot and the positioning part / positioning groove enhances connection stability, effectively preventing relative displacement between the wheel frame and the main frame during operation, and improving the stability of the wheel frame.

Description

Technical Field

[0001] This utility model relates to the field of snowplow technology, and in particular to a detachable auxiliary wheel structure for a snowplow. Background Technology

[0002] Handheld snowplows are widely used for clearing small areas of snow (such as courtyards, sidewalks, and steps) due to their lightweight, flexibility, and ease of operation. These snowplows are usually equipped with auxiliary wheels. By holding the handle on the machine and using the pushing / pulling force applied by the handle and the support and rolling action of the auxiliary wheels, the operator can move, turn, and control the machine's posture during operation.

[0003] Currently, the auxiliary wheels of mainstream handheld snow sweepers on the market generally have the following limitations in their connection method with the main frame:

[0004] 1. Cumbersome connection method and inconvenient disassembly / reassembly: The connection between the auxiliary wheel assembly (usually including wheels, axles, and wheel frames) and the main frame of the snow sweeper is mostly achieved using traditional bolt fastening or pin-through fixing methods. This connection method requires the use of specific tools (such as wrenches, screwdrivers, or hammers) for installation and disassembly. For users who need to frequently disassemble the auxiliary wheels for storage, transportation, or specific scenarios (such as cleaning the edges of steps), the process is rather cumbersome and time-consuming.

[0005] 2. The wheel frame is fixed to the main frame, resulting in poor storage: In existing designs, the support wheel frame of the auxiliary wheels is usually fixed to the main frame and cannot be quickly separated. This means that when the snowplow needs to be stored during the off-season, the auxiliary wheels and their wheel frame structure will protrude outward as a non-removable whole, significantly increasing the overall size of the machine; occupying storage space and increasing the difficulty of storage. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies by providing a detachable auxiliary wheel structure for a snowplow.

[0007] To solve the above-mentioned technical problems, the present invention provides a detachable auxiliary wheel structure for a snowplow, comprising:

[0008] The main frame is used to mount and support the main body of the snow sweeper; and

[0009] A wheel frame is detachably mounted at the bottom of the main frame; several auxiliary wheels are mounted on the wheel frame;

[0010] The wheel frame is provided with a snap-fit ​​part, and the main frame is provided with a snap-fit ​​groove that mates with the snap-fit ​​part;

[0011] The wheel frame engages with the main frame via a snap-fit ​​mechanism to enable quick assembly and disassembly.

[0012] In the above scheme, preferably, the locking parts are symmetrically arranged on both sides of the wheel frame, and the upper end of the locking parts protrudes to one side to form a locking part;

[0013] The snap-fit ​​part passes through the snap-fit ​​groove, and the locking part locks it relative to the snap-fit ​​groove.

[0014] In the above scheme, preferably, the snap-fit ​​part is an elastic plate;

[0015] The upper end of the locking part extends downward toward the protruding side to form a connecting surface, and the lower end extends parallel toward the snap-fit ​​part to form a locking surface.

[0016] In the above scheme, preferably, the distance between the end faces of the locking portions on the side away from the locking portions on both sides is less than the distance between the end faces of the locking portions on the same side of the locking portions on both sides of the card slots.

[0017] In the above scheme, preferably, one end of the wheel frame is provided with a plurality of plug-in parts, and the main frame is provided with slots that cooperate with the plug-in parts.

[0018] In the above scheme, preferably, the other end of the wheel frame is provided with a plurality of positioning parts, and the main frame is provided with positioning grooves that are adapted to the positioning parts.

[0019] In the above scheme, preferably, after the wheel frame is engaged with the main frame, a disassembly hole is formed on the wheel frame that communicates with the engagement part, and the disassembly hole is opened on the wall of one side of the wheel frame.

[0020] In the above scheme, preferably, the wheel frame is provided with a mounting tube that cooperates with the auxiliary wheel, and the mounting tube is provided with a protruding ring;

[0021] The auxiliary wheel is provided with mounting holes and locking holes that mate with the mounting tube and the convex ring.

[0022] In the above scheme, preferably, the mounting tube is provided with several deformation grooves, and the mounting hole on the auxiliary wheel is deformed by the deformation grooves after being squeezed with the mounting tube so that the convex ring is inserted into the card hole.

[0023] In the above scheme, preferably, the wheel frame, the snap-fit ​​part, and the mounting tube are integrally formed.

[0024] The beneficial effects of this utility model are as follows: This utility model achieves tool-free quick assembly and disassembly of the wheel frame and the main frame through the elastic engagement of the snap-fit ​​part and the snap-fit ​​groove, which significantly improves the operating efficiency; the design of the wheel frame being completely separable greatly reduces the storage volume of the snow sweeper, making it convenient for storage, transportation and replacement; the synergistic effect of the plug / slot and the positioning part / positioning groove enhances the connection stability, effectively prevents relative displacement between the wheel frame and the main frame during operation, and improves the stability of the wheel frame;

[0025] In addition, the installation tube groove design makes the auxiliary wheel itself easy to disassemble and replace; the one-piece molding process ensures the load-bearing strength and reliability of the overall structure under complex working conditions, comprehensively solving the pain points of cumbersome disassembly and assembly and space-consuming storage in the existing technology. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 2 This is an exploded structural diagram of the present invention.

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the wheel frame of this utility model.

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of the main frame of this utility model.

[0030] Figure 5 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-5 .

[0032] A detachable auxiliary wheel structure for a snowplow includes a main frame 1 for mounting the main body of the snowplow and providing support thereto; a detachable wheel frame 2 is installed at the bottom of the main frame 1, and auxiliary wheels 3 are symmetrically installed on both sides of the wheel frame 2. The auxiliary wheels 3 support the main frame 1, and the operator can achieve functions such as walking and turning the main frame 1 by using the handle installed on the main frame 1 and the support between the auxiliary wheels 3 and the ground.

[0033] The upper surface of the wheel frame 2 is symmetrically provided with vertically extending latching portions 201 on both sides. Each latching portion 201 is an elastic plate, with its upper end protruding towards the side closest to the other latching portion to form a locking portion 202. Figure 2-3 As shown, the locking part 202 includes a connecting surface 203 and a locking surface 204. The connecting surface 203 is formed by extending downwardly at the upper end of the locking part 202 towards the protruding side, and the locking surface 204 is formed by extending parallel from the lower end of the locking part 202 towards the engaging part 201. Figure 3 As shown.

[0034] The main frame 1 is provided with a slot 101 that cooperates with the snap-fit ​​part 201. That is, the slot 101 is symmetrically arranged at the bottom of the main frame 1. In this embodiment, only the bottom shell of the main frame 1 is cut out, which is an integrally formed part. The slot 101 is set through the bottom shell of the main frame 1, and the slot 101 is long and slotted, with its length being greater than the length of the snap-fit ​​part 201. After the snap-fit ​​part 201 passes through the slot 101 upward, it realizes the installation and cooperation between the wheel frame 2 and the main frame 1, and the relative locking between the two is realized by the locking part 202.

[0035] The thickness of the locking part 202 is less than the width of the slot 101, so that the locking part 202 can pass through the slot 101 as a whole, thereby realizing the overall snap-fit ​​between the locking part 202 and the main frame 1.

[0036] The distance between the end faces of the locking portions 202 on the two sides of the locking portions 201 away from the locking portions 201 is less than the distance between the end faces of the two sides of the slots 101 on the same side of the locking portions 202. That is, when the locking portions 201 pass through the slots 101 upwards, the locking portions 202 and the wall of the slots 101 on the same side of the locking portions 202 abut against each other. At this time, the connecting surface 203 and the wall of the slots 101 are in a state of contact, which further pushes the wheel frame 2 to slide upwards. The locking portions 201 deform after the connecting surface 203 is pressed against the side wall of the slots 101. Then, when the locking portions 202 pass through the slots 101 as a whole, the connecting surface 203 is separated from the slots 101. At this time, the locking portions 202 are located above the slots 101 as a whole, and the locking surface 204 prevents the locking portions 201 from separating from the main frame 1.

[0037] To ensure the wheel frame 2 is properly positioned and engaged with the main frame 1, thereby improving the tightness of the connection between them, in this embodiment, Figure 2 and Figure 3 The front end of the wheel frame 2 shown has several insertion parts 205. The insertion parts 205 are formed by the forward protrusion of the front edge of the wheel frame 2. There are multiple insertion parts, and the figure shows four as an example. The main frame 1 is provided with slots 102 that cooperate with the insertion parts 205. The slots 102 are embedded in the end face of the bottom shell of the main frame 1 located on the same side as the front end of the wheel frame 2. In use, the wheel frame 2 is moved first to insert the insertion parts 205 on the wheel frame 2 into the corresponding slots 102 so that the front end of the wheel frame 2 is relatively positioned relative to the left and right and front positions of the main frame 1.

[0038] exist Figure 2 and Figure 3 The rear end of the wheel frame 2 is provided with a plurality of positioning parts 206. Each positioning part 206 is a protrusion extending upward from the upper end surface of the wheel frame 2. The main frame 1 is provided with positioning grooves 103 that are adapted to the positioning parts 206. The positioning grooves 103 are located on the same side as the positioning parts 206. Figure 4As shown; in use, the front end of the wheel frame 2 is first inserted into the slot 102 through the insertion part 205, and then the rear end of the wheel frame 2 is raised so that the end of the locking part 201 is pushed into the slot 101, and the locking part 202 locks the locking part 201 in the slot 101. At the same time, the positioning part 206 cooperates with the positioning groove 103 to make the main frame 1 and the wheel frame 2 be locked together and fixed, forming Figure 1 The state shown.

[0039] After the wheel frame 2 is engaged with the main frame 1, a disassembly hole 207 is formed on the wheel frame 2, which communicates with the engagement part 201. The disassembly hole 207 is opened on the wall of one side of the wheel frame 2, such as... Figure 1 and Figure 2 As shown, the disassembly hole 207 is connected to the side wall of the snap-fit ​​part 201 near the neutral surface of the wheel frame 2, and the locking part 202 is also located on the side of the snap-fit ​​part 201 near the neutral surface of the wheel frame 2. During disassembly, a rod can be inserted into the disassembly hole 207, and then the end of the rod is used to abut against the side wall of the snap-fit ​​part 201 in the disassembly hole 207, causing the snap-fit ​​part 201 to elastically deform and tilt away from the neutral surface of the wheel frame 2. At this time, the locking surface 204 of the locking part 202 is disengaged from the end face of the slot 101, and the locking part 202 is located directly above the slot 101. Then, the snap-fit ​​part 201 is pulled out from the slot 101, and at the same time, the insertion part 205 is disengaged from the slot 102, and the positioning part 206 is disengaged from the positioning groove 103, thereby realizing the overall separation of the wheel frame 2 and the main frame 1.

[0040] The wheel frame 2 is provided with a mounting tube 301 that cooperates with the auxiliary wheel 3, such as... Figure 2 and Figure 3 As shown, the auxiliary wheel 3 is symmetrically arranged at the lower end of the wheel frame 2, and the wheel frame 2 forms legs on both sides. On the side of the legs away from the neutral surface of the wheel frame 2, the mounting tube 301 extends outward to form a mounting tube 301. The auxiliary wheel 3 is rotatably mounted on the mounting tube 301.

[0041] The mounting tube 301 is provided with several deformation grooves 305 that penetrate the entire tube body, thereby splitting the mounting tube 301 into multiple arc-shaped petals. Deformation grooves 305 are formed between adjacent arc-shaped petals. Under external pressure, the arc-shaped petals can reduce the gap between the deformation grooves 305 and deform, so that holes smaller than the diameter of the mounting tube 301 can be inserted and installed through the deformation of the deformation grooves 305.

[0042] The mounting tube 301 is provided with a convex ring 302; the auxiliary wheel 3 is provided with a mounting hole 303 and a locking hole 304 that cooperate with the mounting tube 301 and the convex ring 302. The deformation groove 305 is provided through the convex ring 302. The diameter of the mounting hole 303 is smaller than the diameter of the locking hole 304, and the diameter of the mounting hole 303 is in clearance fit with the mounting tube 301 at the connection between the convex ring 302 and the wheel frame 2. The diameter of the convex ring 302 is smaller than the diameter of the locking block 304, and the two are in clearance fit after the auxiliary wheel 3 and the mounting tube 301 are assembled. After the mounting hole 303 on the auxiliary wheel 3 is pressed against the mounting tube 301, it deforms through the deformation groove 305 to make the convex ring 302 lock into the locking hole 304, thereby realizing the rotation and locking of the auxiliary wheel 3 onto the mounting tube 301.

[0043] The wheel frame 2, the snap-fit ​​part 201, and the mounting tube 301 are integrally formed, and the material can be plastic or lightweight metal integrally formed.

[0044] A method using a snowplow auxiliary wheel detachable structure as described above:

[0045] S1: Wheel frame installation steps

[0046] Align the insertion part 205 at the front end of the wheel frame 2 with the slot 102 of the main frame 1, and insert it horizontally to achieve left, right and front positioning.

[0047] Lift the rear end of the wheel frame 2 so that the top of the locking part 201 is aligned with the slot 101 of the main frame 1;

[0048] When the wheel frame 2 is pushed upward, the connecting surface 203 of the locking part 201 contacts and presses against the side wall of the slot 101, causing the elastic plate to deform.

[0049] Continue pushing upwards until the locking part 202 completely passes through the slot 101, the locking part 201 springs back to its original position, and the locking surface 204 snaps into the slot 101 to achieve locking.

[0050] At the same time, the positioning part 206 at the rear end of the wheel frame 2 is embedded into the positioning groove 103 of the main frame, completing the bidirectional fixation.

[0051] S2: Auxiliary Wheel Installation Steps

[0052] Align the mounting hole of the auxiliary wheel 3 with the mounting tube 301 on the support leg of the wheel frame 2; press the auxiliary wheel 3 vertically down, and the circumferential deformation groove 305 of the mounting tube 301 shrinks and deforms; after the protruding ring 302 of the mounting tube 301 slides through the inner wall of the mounting hole 303, it pops into the locking hole 304 of the auxiliary wheel 3 to complete the fixation.

[0053] S3: Disassembly Process

[0054] Insert the rod-shaped tool into the disassembly hole 207 on the side wall of the wheel frame 2, and push the locking part 201 to make it elastically deform outward;

[0055] After the locking surface 204 disengages from the slot 101, pull down the rear end of the wheel bracket 2 to make the locking part 201 exit the slot 101;

[0056] The front end connector 205 is pulled out horizontally to separate the wheel frame 2 from the main frame 1;

[0057] Pull the auxiliary wheel 3 outward directly, and the deformation groove 305 of the mounting tube 301 will shrink, causing the convex ring 302 to disengage from the locking hole 304.

[0058] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A detachable auxiliary wheel structure for a snowplow, characterized in that: include The main frame (1) is used to mount and support the main body of the snow sweeper; and A wheel frame (2) is detachably mounted at the bottom of the main frame (1); several auxiliary wheels (3) are mounted on the wheel frame (2). The wheel frame (2) is provided with a snap-fit ​​part (201), and the main frame (1) is provided with a snap-fit ​​groove (101) that cooperates with the snap-fit ​​part (201). The wheel frame (2) is engaged with the main frame (1) through the snap-fit ​​part (201) to achieve quick assembly and disassembly.

2. The detachable auxiliary wheel structure for a snowplow according to claim 1, characterized in that: The snap-fit ​​portion (201) is symmetrically arranged on both sides of the wheel frame (2), and the upper end of the snap-fit ​​portion (201) extends to one side to form a locking portion (202). The latching part (201) passes through the latching groove (101) and is locked relative to the latching groove (101) by the locking part (202).

3. The detachable auxiliary wheel structure for a snowplow according to claim 2, characterized in that: The snap-fit ​​part (201) is an elastic plate; The upper end of the locking part (202) extends downward toward the protruding side to form a connecting surface (203), and the lower end extends parallel to the snap-fit ​​part (201) to form a locking surface (204).

4. The detachable auxiliary wheel structure for a snowplow according to claim 2, characterized in that: The distance between the end faces of the locking portions (202) on the two sides of the locking portions (201) away from the locking portions (201) is less than the distance between the end faces of the two sides of the locking portions (202) on the same side of the locking portions (202).

5. The detachable auxiliary wheel structure for a snowplow according to claim 1, characterized in that: The wheel frame (2) has several plug-in parts (205) on one end, and the main frame (1) has a slot (102) that cooperates with the plug-in parts (205).

6. The detachable auxiliary wheel structure for a snowplow according to claim 5, characterized in that: The other end of the wheel frame (2) is provided with a plurality of positioning parts (206), and the main frame (1) is provided with positioning grooves (103) that are adapted to the positioning parts (206).

7. The detachable auxiliary wheel structure for a snowplow according to claim 1, characterized in that: After the wheel frame (2) is engaged with the main frame (1), a disassembly hole (207) is formed on the wheel frame (2) that is in communication with the engagement part (201). The disassembly hole (207) is opened on the wall of one side of the wheel frame (2).

8. The detachable auxiliary wheel structure for a snowplow according to claim 1, characterized in that: The wheel frame (2) is provided with a mounting tube (301) that cooperates with the auxiliary wheel (3), and the mounting tube (301) is provided with a protruding ring (302). The auxiliary wheel (3) is provided with mounting holes (303) and locking holes (304) that cooperate with the mounting tube (301) and the convex ring (302).

9. A detachable auxiliary wheel structure for a snowplow according to claim 8, characterized in that: The mounting tube (301) has several deformation grooves (305) through it. After the mounting hole (303) on the auxiliary wheel (3) is squeezed against the mounting tube (301), it deforms through the deformation grooves (305) so that the convex ring (302) is inserted into the card hole (304).

10. A detachable auxiliary wheel structure for a snowplow according to claim 8, characterized in that: The wheel frame (2) is integrally formed with the snap-fit ​​part (201) and the mounting tube (301).

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