Snow shovel plate anti-stuck expansion joint device

Abstract

The utility model discloses a snow shovel board anti -stuck expansion joint device, including snow shovel and lower part connection fixed snow shovel cutter board, the both sides of snow shovel cutter board are installed with prevent its from entering into the anti -stuck component of expansion joint, and the anti -stuck component includes the anti -stuck block of inside, is provided with the rolling bearing on the outside of anti -stuck block, the utility model is through the installation anti -stuck component in the both sides of snow shovel cutter board, wherein the cooperation design of anti -stuck block and rolling bearing can effectively prevent the card of cutter board and enter the road expansion joint, avoid the collision damage of cutter board and expansion joint edge, thereby prolongs the service life of cutter board, reduces the metal waste production, keeps the high efficiency of snow removal operation simultaneously, also has realized the transformation of waste material from waste to functional product quality, has greatly promoted the utilization value of waste material.

Description

Technical Field

[0001] This utility model relates to the field of snowplow blades, specifically to a snowplow blade anti-jamming expansion joint device. Background Technology

[0002] Snowplows, as key equipment for winter road maintenance, are typically mechanically mounted on the front of trucks. While their bottom-mounted snow blades are replaceable and wear-resistant, they have significant drawbacks in practical applications. When clearing snow from concrete pavements, the snow blades easily become stuck in the expansion joints (typically 5-20mm wide), which are essential to road design. These expansion joints are a crucial structural feature of cement concrete pavements, designed to release thermal stress through a completely open structure, preventing the pavement from crushing or buckling due to thermal expansion.

[0003] In existing technologies, snowplow blades getting stuck in expansion joints can lead to two serious consequences: First, the violent collision between the blade and the edge of the expansion joint can cause mechanical damage such as blade edge chipping and substrate deformation, significantly shortening the blade's lifespan. Second, frequent replacements result in a large amount of scrap metal generated from discarded blades, occupying storage space and wasting resources. More importantly, traditional solutions often use integrally thickened blades or added rigid blocks. These methods not only increase equipment weight and affect snow removal efficiency but also fail to effectively solve the problem of getting stuck, and may introduce new interference risks when encountering uneven road surfaces. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a device to prevent snowplow blades from getting stuck in expansion joints.

[0005] This utility model is achieved through the following technical solution:

[0006] This application provides a snowplow blade anti-jamming device, including a snowplow and a snowplow blade fixed to its lower part. Anti-jamming components are installed on both sides of the snowplow blade to prevent it from entering the expansion joint. The anti-jamming components include an inner anti-jamming block and a rolling bearing is provided on the outer side of the anti-jamming block.

[0007] Furthermore, this application also proposes that a connecting plate is connected to the side of the anti-jamming block, and the connecting plate is fixedly connected to the snow removal blade by multiple fixing bolts.

[0008] Furthermore, this application also proposes that the bottom of the anti-jamming block is provided with an integral support foot, which extends to both sides and has rounded ends.

[0009] Furthermore, this application also proposes that the rolling bearing is sleeved on the support shaft, the support shaft is vertically fixed to the outside of the anti-jamming block, a limit pin is provided at the end of the support shaft, and a spacer sleeve is provided on the inner side of the rolling bearing and sleeved on the support shaft.

[0010] Furthermore, this application also proposes that the support feet, rolling bearings, and snowplow blades be arranged flush with each other at the bottom.

[0011] Furthermore, this application proposes that the anti-jamming block and support foot are assembled by cutting and welding waste snowplow blades. Furthermore, this application proposes that the length of the support foot is 30-50mm.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: By installing anti-jamming components on both sides of the snow removal blade, the combination of anti-jamming blocks and rolling bearings can effectively prevent the blade from getting stuck in the road expansion joint, avoid collision damage between the blade and the edge of the expansion joint, thereby extending the service life of the blade, reducing the generation of metal waste, maintaining the high efficiency of snow removal operations, and realizing the qualitative transformation of waste materials from waste to functional products, greatly improving the utilization value of waste materials. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 Enlarged view of a local structure in the diagram;

[0015] In the diagram: 1. Snowplow blade; 2. Snow removal blade; 3. Anti-jamming component; 4. Anti-jamming block; 5. Support foot; 6. Connecting plate; 7. Fixing bolt; 8. Support shaft; 9. Rolling bearing; 10. Limit pin. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0017] like Figure 1-2 As shown, this application proposes a snowplow blade anti-jamming device, which includes a snowplow blade and a snowplow blade fixed to its lower part. Anti-jamming components are installed on both sides of the snowplow blade to prevent it from entering the expansion joint. The anti-jamming components include an inner anti-jamming block and a rolling bearing is provided on the outer side of the anti-jamming block.

[0018] The anti-jamming block is made of metal and is bolted to the snowplow blade. The rolling bearing is a deep groove ball bearing with an outer diameter of 30-50mm. The installation position of the anti-jamming block and rolling bearing can be adjusted according to actual needs, for example, it can be placed at the front 1 / 3 or middle of the snowplow blade.

[0019] This technical solution effectively prevents the snowplow blade from getting stuck in road expansion joints by installing anti-jamming components on both sides of the blade and utilizing the combined action of anti-jamming blocks and rolling bearings. When the snowplow is in operation, the anti-jamming blocks first contact the edge of the expansion joint, and the rolling bearings then roll, allowing the snowplow blade to smoothly glide over the expansion joint without getting stuck. Compared with existing technologies, this device has a simple and reliable structure, significantly reduces direct collisions between the snowplow blade and the expansion joint, and extends the service life of the snowplow blade.

[0020] Furthermore, this application also proposes that a connecting plate is connected to the side of the anti-jamming block, and the connecting plate is fixedly connected to the snow removal blade by multiple fixing bolts.

[0021] The connecting plate consists of two pieces with a central slot into which the snowplow blade inserts. Its thickness is 5-10mm to ensure structural strength. M8 or M10 standard bolts can be used, preferably 2-4 bolts symmetrically distributed. The connecting plate and the anti-jamming block are welded together.

[0022] This technical solution enables rapid disassembly and maintenance of the anti-jamming component through a modular connection structure. Specifically, the connecting plate creates a rigid connection between the anti-jamming block and the snowplow blade, effectively dispersing stress when subjected to lateral impact forces. The bolt-fixing method facilitates individual replacement of the anti-jamming block based on wear conditions, reducing maintenance costs by more than 60% compared to a monolithic structure. Testing has shown that this connection structure maintains stable connection strength even at -30℃, with a bolt preload attenuation rate not exceeding 5%.

[0023] Furthermore, this application also proposes that the bottom of the anti-jamming block is provided with an integral support foot, which extends to both sides and has rounded ends.

[0024] The support feet and anti-jamming blocks are designed as a single unit. The length of the support feet extending to both sides can be adjusted according to actual working conditions, with the extension range controlled between 30-50mm. The ends of the support feet feature a rounded transition design, with a recommended radius of 5-10mm to reduce movement resistance. The support feet and anti-jamming blocks can be cut and formed from recycled snowplow blades. Welding multiple cut pieces together increases the overall thickness. The bottom of the support feet is flush with the bottom of the snowplow blade to ensure even force distribution during operation.

[0025] Specifically, this technical solution effectively increases the contact area between the anti-jamming component and the road surface by incorporating extended support feet at the bottom of the anti-jamming block. The integrated structure of the support feet avoids the risk of loosening of connecting parts, and their rounded ends reduce travel resistance. When the snowplow is in operation, the support feet and rolling bearings together form a three-point support structure, which not only prevents the blade from getting stuck in the expansion joint but also disperses impact loads. Compared with solutions relying solely on rolling bearings, this design significantly improves the stability of the anti-jamming structure while reducing manufacturing costs by utilizing recycled materials. The extension length of the support feet has been verified through actual testing, ensuring anti-jamming effectiveness while preventing excessive wear.

[0026] Furthermore, this application also proposes that the rolling bearing is sleeved on the support shaft, the support shaft is vertically fixed to the outside of the anti-jamming block, a limit pin is provided at the end of the support shaft, and a spacer sleeve is provided on the inner side of the rolling bearing and sleeved on the support shaft.

[0027] The rolling bearing is mounted on the support shaft via a sleeve connection. The support shaft is vertically fixed and connected to the outside of the anti-jamming block. This arrangement allows the rolling bearing to rotate freely around the support shaft. A limiting pin is located at the end of the support shaft to prevent the rolling bearing from axially displacing and falling off. A spacer sleeve is installed between the inner side of the rolling bearing and the support shaft, serving to provide axial positioning and reduce friction. In a preferred embodiment, the support shaft can be made of stainless steel with a diameter ranging from 20-30 mm; the limiting pin can be a cotter pin or a flexible cylindrical pin; and the spacer sleeve can be made of copper alloy or engineering plastic with a thickness controlled between 5-8 mm.

[0028] This technical solution utilizes a rotatable rolling bearing structure. When the snowplow blade moves to the expansion joint, the rolling bearing rolls along the edge of the expansion joint, effectively preventing the anti-jamming component from colliding hard with the joint edge. The vertical fixing of the support shaft ensures the stable operation of the rolling bearing, while the combination of the limit pin and spacer sleeve guarantees the bearing's rotational freedom and prevents axial movement. Compared to existing fixed anti-jamming structures, this solution significantly reduces the frictional resistance between the anti-jamming component and the expansion joint during snow removal operations, extending the service life of the snowplow blade. Specifically, the rotational characteristics of the rolling bearing allow the anti-jamming component to smoothly transition through the expansion joint, while the spacer sleeve reduces wear between the support shaft and the bearing's inner ring. The overall structure is simple, reliable, and easy to maintain.

[0029] Furthermore, this application also proposes that the support feet, rolling bearings, and snowplow blades be arranged flush with each other at the bottom.

[0030] Specifically, the bottom height of the support foot and rolling bearing is adjusted to be at the same level as the working surface of the snowplow blade. The support foot and anti-jamming block are integrally cut and formed, with the extended portion featuring a rounded transition design. The rolling bearing is fixed to the outside of the anti-jamming block via a support shaft, and a spacer sleeve is installed inside the bearing to ensure axial positioning. As a preferred embodiment, the extension length of the support foot can be controlled within the range of 30-50mm. This size range ensures support stability while avoiding excessive extension that could affect the flexibility of the device.

[0031] Therefore, this technical solution effectively solves the jamming problem caused by height differences during snow removal operations by keeping the bottoms of the three key components flush. When the snowplow blade moves along the road surface, the support feet and rolling bearings share the load, preventing the blade from bearing excessive force alone. The rotational characteristics of the rolling bearings reduce frictional resistance with the road surface, while the extended design of the support feet increases the support area. This structural arrangement ensures the normal operating height of the snowplow blade and disperses local stress through multi-point support, significantly reducing the risk of the blade getting stuck in expansion joints. Compared with existing technologies, this solution further optimizes the stress distribution and extends the service life of the snowplow blade while maintaining the original anti-jamming function.

[0032] Furthermore, this application also proposes that the anti-jamming block and the support foot are assembled by cutting and welding waste snowplow blades.

[0033] Specifically, discarded snowplow blades are cut and processed to form blanks for anti-jamming blocks and support legs, which are then assembled and thickened into a single structure through welding. The cutting process can employ plasma cutting or laser cutting to ensure clean cuts; the welding process uses arc welding or gas shielded welding to guarantee connection strength. This is one preferred implementation method.

[0034] Therefore, this technical solution solves the material sourcing problem in the manufacture of anti-jamming components by recycling waste snowplow blades, and also achieves resource recycling. Compared with using virgin materials, it not only reduces production costs but also alleviates the pressure of accumulating waste blades. In practical applications, the anti-jamming components, after being cut and welded, still maintain sufficient structural strength, and their anti-jamming function is comparable to that of products made from new materials, but with significantly improved overall economic benefits. This solution is particularly suitable for high-altitude and cold-weather operation scenarios that require frequent replacement of snowplow blades.

[0035] Furthermore, this application also proposes that the length of the support foot is 30-50mm.

[0036] Specifically, the support feet, as structural components extending to both sides from the bottom of the anti-jamming block, have their length range determined through experimental verification. A minimum length of 30mm ensures that the support feet effectively cross the width of common expansion joints, preventing the blade from getting stuck; a maximum length of 50mm prevents increased snow removal resistance or structural interference due to excessive length. As a preferred implementation, the support feet can use a middle value of 40mm, ensuring both anti-jamming effectiveness and structural stability. This size range is achieved by cutting and welding discarded snow removal blades, meeting both functional requirements and material reuse requirements.

[0037] Therefore, this technical solution, by limiting the specific size range of the support feet, enables the anti-jamming component to form a stable sliding support surface at the expansion joint. When the snowplow blade travels to the expansion joint, the support feet contact the road surface on both sides of the joint with a precise span, mechanically preventing the blade from sinking, while rolling bearings assist in sliding to reduce friction. Compared with existing technologies, this dimensional design not only solves the processing feasibility problem when modifying waste materials, but also ensures the reliability of the anti-jamming component through quantitative parameters, extending the service life of the blade under expansion joint conditions.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A snowplow blade anti-jamming device, comprising a snowplow (1) and a snowplow blade (2) fixedly connected to its lower part, characterized in that: The snow removal blade (2) is equipped with anti-jamming components (3) on both sides to prevent it from entering the expansion joint. The anti-jamming components (3) include an inner anti-jamming block (4) and a rolling bearing (9) is provided on the outer side of the anti-jamming block (4).

2. The snowplow blade anti-jamming device according to claim 1, characterized in that: The anti-jamming block (4) is connected to a connecting plate (6) on its side. The connecting plate (6) is fixedly connected to the snow removal blade (2) by multiple fixing bolts (7).

3. The snowplow blade anti-jamming device according to claim 2, characterized in that: The bottom of the anti-jamming block (4) is provided with an integral support foot (5), which extends to both sides and has a rounded end.

4. The snowplow blade anti-jamming device according to claim 1, characterized in that: The rolling bearing (9) is sleeved on the support shaft (8), the support shaft (8) is vertically fixed on the outside of the anti-jamming block (4), the end of the support shaft (8) is provided with a limit pin (10), and the inner side of the rolling bearing (9) is provided with a spacer sleeve that is sleeved on the support shaft (8).

5. A snowplow blade anti-jamming device for expansion joints according to claim 3, characterized in that: The support foot (5), rolling bearing (9) and snow removal blade (2) are set at the same level at the bottom.

6. The snowplow blade anti-jamming device according to claim 2, characterized in that: The anti-jamming block (4) and the support foot (5) are made by cutting and welding waste snow removal blades.

7. A snowplow blade anti-jamming device for expansion joints according to claim 6, characterized in that: The length of the support foot (5) is 30-50mm.

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