Car Wheel Chock
Overview
Vehicle anti-skid chocks are essential safety tools used to immobilize parked vehicles, especially on inclines or unstable terrain. They are widely deployed in trucking, aviation, marine, and construction industries where unintended vehicle movement poses significant risks. Modern designs prioritize durability, ease of use, and compatibility with various tire sizes. These chocks typically wedge against a vehicle's wheels to create friction, counteracting gravitational or external forces. Their effectiveness depends on material composition, surface texture, and proper placement. Regulatory standards often mandate their use in commercial transport to comply with workplace safety protocols.
Structure and Working Principle
Anti-skid chocks feature a wedge-shaped design with a high-angle slope to maximize contact with the tire. The base is often ribbed or grooved to resist lateral displacement, while the contact surface incorporates textured patterns (e.g., diamond tread) for enhanced grip. Heavy-duty models may include tie-down loops or magnetic bases for added security. When placed correctly, the chock's geometry distributes the vehicle's weight to generate static friction exceeding the rolling force. Advanced variants use elastomeric materials that deform slightly under load, creating a suction effect. Some industrial-grade chocks integrate with parking brake systems or sensors to alert operators if improperly engaged.
Key Features
1. **Material Durability**: Premium chocks use UV-stabilized polymers or vulcanized rubber to withstand temperature extremes (-40°C to +120°C) and resist oil/chemical degradation. 2. **Non-Slip Surfaces**: Micro-textured or embedded abrasive particles provide coefficient of friction (CoF) values exceeding 0.6 when tested per ASTM C1028 standards. 3. **Ergonomic Design**: Lightweight models (1–3kg) often include handles or stacking features for portability, while larger chocks may have forklift pockets for handling. Specialized versions offer reflective strips for nighttime visibility or RFID tags for inventory tracking. Aviation chocks frequently incorporate frangible elements that break away under excessive force to prevent aircraft damage.
Application Areas
**Transportation**: Mandatory for semi-trailers during loading/unloading (FMCSA regulation §393.159). Pairing chocks on both sides of wheels is recommended for slopes >5%. **Aviation**: FAA-accepted chocks for ground support equipment (GSE) must meet AC 150/5210-5C specs, often colored yellow for high visibility on tarmacs. **Marine**: Used on ferry car decks and shipyards, featuring corrosion-resistant materials like marine-grade aluminum with non-marking rubber coatings. **Emergency Vehicles**: Fire departments use heat-resistant chocks capable of withstanding brief exposure to 300°C flames.
Maintenance and Precautions
Monthly inspections should check for: - Surface cracks or material hardening indicating UV degradation - Worn tread patterns reducing friction - Deformation exceeding 5% of original dimensions Clean with mild detergent to remove oil/grease buildup; avoid petroleum-based solvents that may degrade rubber compounds. Store vertically in dry conditions to prevent permanent set deformation. Always position chocks perpendicular to the wheel and test stability by applying hand pressure. Never rely solely on chocks when working under lifted vehicles—use additional jack stands.
B2B Procurement Guide
**Volume Pricing**: Bulk orders (100+ units) typically attract 15–30% discounts from manufacturers. Consider modular designs that accommodate different wheel sizes to reduce SKU complexity. **Certifications**: Look for ISO 9001 production facilities and products tested to ANSI/ASSE A10.32 or EN 12312-20 standards. Aviation buyers require FAA/PMA documentation. **Customization**: Suppliers often offer: - Company logos molded into the product - Color coding for different vehicle classes - Integrated GPS trackers for fleet management Lead times average 2–4 weeks for standard orders, extended for custom tooling. Request material safety data sheets (MSDS) for chemical compliance reporting.
Related Manufacturers
- 主营：油封、O型圈、缓冲垫、橡胶止退器、硅胶套、橡胶帽、倒车块、电瓶帽、氟胶条、剥皮辊、过线圈、挡轮块、橡胶棒、水泵垫、减震块、密封圈、护线套、护线圈、挡车器、橡胶圈、蝶阀胶、减震垫、密封件、密封垫、减震器、橡胶盖
- 主营：橡胶止退器三角木、矿用油浸枕木
- 主营：叉车轮、绳锯机、导线轮、聚氨酯三角汽车停车垫、刮煤板、刮水板、档车块、定制板、减震板、耐磨板、耐磨条、传动轮、挡车板、后导轮、雨篦子、阻胎器、聚氨酯、止滑块、清扫器、搅拌块、方向盘、定位器、细筛网、防滑块、耐油板、万向轮
- 主营：道岔、圆环链条、矿用道岔、钢轨止退器、游动绞车、链轮、左开道岔、马蹄环、渡线道岔、煤电钻、风筒布、推溜器、链接环、接链环、电缆夹、调度绞车、矿用人车、金属长梁、帆布风障、电动钢轨、气动绞车、轨道夹板、轴流风机、电缆挂钩、凿井绞车、钢轨锯轨机
- 主营：止退器、橡胶水马、实心限速带、橡塑缓冲带
- 主营：尼龙板、挡风条、绝缘板、便携止退器、pvc阻燃、pvc卡条、发泡条、耐候胶、聚氨酯、硅橡胶、pvc板材、电木棒、阻水条、挤出条、环氧板、密封条、tpe胶条、橡胶垫、硅胶管、防火门、透明板、尼龙棒、硅胶条、橡胶板、橡胶条、装饰pvc
- 主营：拦漂排、塑料浮台、拦污漂排、汽车限位器、海事浮标、疏浚浮体、警示浮标、塑料浮子、管道浮筒、挡渣浮排、围栏浮筒、拦渣浮漂、拦污浮筒、疏浚管道、活动平台、围栏浮漂、拦污导漂、围栏浮排、夹管浮体、塑料浮筒、管道浮子、清淤管浮、管道托浮、拦漂浮栅、拦截浮筒、拦污浮栅
- 主营：--
- 主营：警示柱、防护围栏、高速标牌、标志牌定制、道路标志牌、水泥标志桩、乡村市政防撞、公路波形护栏、镀锌钢管护栏、定做波形护栏、定制波形护栏、管道工程防撞栏、高速公路护栏板、水泥警示柱、镀锌钢板护栏
- 主营：钢管警示柱、挡车器、防撞柱、防护栏、防撞栏、道口立柱、警示柱、护栏、波形护栏、PU 警示柱、钢管挡车器、异型挡车器、水泥标志桩、减速带、铁马护栏、防撞护栏、反光标志桩、道路警示柱、车位挡轮器、隔离护栏、反光警示、车位定位器、波形板、警示桩、水泥防撞墩
- 主营：测速仪、减速带、水马、围挡、钢管挡车器、太阳能系列、交通产品
- 主营：防滑垫、小猪垫、牛棚垫、汽车止退器、奶牛垫、牛床垫、pvc地垫、橡胶垫、保温垫、摩擦带、刮粪垫、印染设备、防滑地垫、橡胶地板、彩色胶板、地面防滑、橡胶猪垫、猪栏垫子、奶牛卧床垫、小猪保育垫、橡胶牛栏垫、小猪保温板、保温猪舍垫、橡胶畜牧垫、橡胶止轮器
- 主营：实木托卡板、深圳卡板、木卡板、三角木止退器、木托盘、消毒卡板、熏蒸卡板、胶合卡板、欧标卡板、美标卡板、欧标出口卡板、出口卡板、托盘出口、出口托盘、木箱出口、出口包装箱、龙岗卡板、打包木箱、I PPC卡板、二手卡板、全新卡板
- 主营：减速带、爆闪灯、挡车器、橡胶止退器、太阳能标志牌、测速仪
- 主营：转角镜、车位锁、球面镜、限速板、程塑料、隔离椎、警示牌、红慢灯、三角垫、减速块、锥锥筒、保护膜、标志牌、摄像头、防淹板、反光膜、减速垫、半球镜、减速垄、警示车、马施工、注水桶、雾区灯、爆闪灯、反光珠