堆高機翻倒與倉庫裝卸事故¶

動力工業卡車（堆高機）和商業倉庫裝卸碼頭是現代物流、製造和零售業務中最危險的機械區域之一。儘管緊湊型倉庫平衡重堆高機看起來並不比小型客車大，但其重量在 3,500 至 6,000 公斤（7,700 至 13,200 磅）之間，或者是全尺寸皮卡車重量的兩到三倍，集中在後部的緻密鑄鐵配重中。由於標準坐式堆高機由狹窄的三點懸吊系統（兩個固定的前驅動輪和一個中心樞轉的後轉向軸）支撐，因此在高負載轉彎、駛過傾斜坡道或撞上坑洼時，其重心會以驚人的速度轉移到穩定三角形之外。

在堆高機事故中導致死亡的唯一主要原因是橫向翻倒時的捕鼠器效應。當坐式堆高機開始側翻時，人類本能會尖叫，要求未繫安全帶的操作員跳出駕駛室。由於頭頂防護籠的頂部以高角速度穿過寬闊的弧線，因此跳躍操作員幾乎總是在半空中被追上，並被掉落在混凝土地板上的鋼製頭頂護欄壓在胸部或頭骨上。了解為什麼坐著的操作員必須在駕駛室內係好安全帶並做好支撐，而站立式前移式卡車操作員必須向後退出車廂，如何在裝卸碼頭拖車拉走或起落架倒塌中倖存，以及如何阻止多米諾骨牌效應的托盤架倒塌，可以挽救倉庫地板上的生命。

現在就這樣做¶

1. 切勿從側翻的坐式平衡重堆高機上跳下。 ** 牢牢坐在座椅上，係好安全帶，雙手緊緊握住方向盤，將雙腳牢牢踩在地板上，將上半身和頭部傾斜遠離墜落方向**，這樣頭頂上的鋼籠就會像防滾架一樣撞擊您周圍的地板。
2. **如果您操作的站立式窄通道前移式堆高機會從碼頭傾斜或掉落，請垂直向後退一步。 **與帶安全帶的坐式堆高機不同，立式前移式堆高機和訂單揀選機有一個開放式後入口，沒有座位；鬆開緊急煞車踏板，從後部開口徑直走出倉庫地面，遠離傾翻方向。
3. **切勿急於使用單一未評級的倉庫千斤頂或用手將傾斜的叉車從被壓住的受害者上抬起。 ** 4,500 公斤（10,000 磅）的堆高機會壓碎未評級的汽車千斤頂並從位置不當的叉齒上滑落；使用第二台具有足夠額定容量的工業叉車和實心墊塊，以確保每一毫米的提升，並撥打當地的緊急電話號碼（美國和加拿大為 911，歐盟為 192，英國為 911，歐盟為 192，英國為 992）或英國為 911，歐盟為 192，或英國檢查為 992，或為英國檢查為 緊急號碼。
4. **如果您的坐式堆高機從貨櫃邊緣跌落，請留在防滾架內。 ** 當拖車過早開走或在裝載過程中緩慢向前移動時，請在坐式駕駛室內緊緊支撐，而不是跳入月台牆和墜落的 5 噸機器之間的間隙。
5. **如果堆高機撞擊並壓彎直立的托盤貨架立柱，請立即疏散整個倉庫過道。 ** 工業選擇性托盤貨架在巨大的壓縮負載下可存儲數萬公斤的重量；一根彎曲的下部立柱可以在幾秒鐘內引發整個倉庫的漸進式多米諾骨牌倒塌。
6. **發生堆高機碰撞後，關閉丙烷罐閥門或斷開電池快速插頭，並對區域進行通風。 ** 傾斜的液化石油氣 (LPG) 堆高機會洩漏比空氣重的丙烷蒸氣，而傾斜的鉛酸電池堆高機會洩漏腐蝕性硫酸並釋放爆炸性氫氣；消除火源並阻止旁觀者。

flowchart TD
    Start["堆高機或裝卸平台緊急狀況"] --> Type{"正在發生什麼類型的機器或事件？"}
    Type -->|"坐式平衡重型堆高機傾卸"| SitDown["1. 請勿跳躍（有夾鼠危險）<br/>2.握緊方向盤<br/>3.將腳支撐在地板上<br/>4。軀幹傾斜，頭部遠離撞擊面"]
    Type -->|"立式前移式卡車傾翻或碼頭掉落"| StandUp["直往後走出開放式後方操作室，落在地板上，遠離墜落方向"]
    Type -->|"受害者被壓在翻倒的堆高機下面"| Pinned["1. 撥打 911 / 112 / 999 進行大規模救援<br/>2.關閉液化石油氣丙烷閥門或電池插頭<br/>3。只能使用額定堆高機或安全氣囊 + 硬木板進行提升<br/>4。留意擠壓再灌注症候群"]
    Type -->|"堆高機直立地撞擊托盤架"| RackHit["1. 如果堆高機支撐著彎柱，請勿將堆高機倒出<br/>2。立即疏散走道及鄰近走道<br/>3.封鎖區域直至工程師支撐機架"]
    SitDown --> AfterStop["等到機器完全停止，關閉點火裝置和丙烷閥，從上方退出"]
    StandUp --> AfterStop

穩定性三角以及為什麼從坐式堆高機跳下是致命的¶

為了理解為什麼堆高機翻倒會如此突然以及為什麼跳躍是死刑，每個操作員和倉庫主管都必須了解穩定三角形的幾何形狀和捕鼠器效應的運動學。

How the stability triangle works¶

Unlike an automobile, which has four independent suspension springs at all four corners (forming a wide stability rectangle), a four-wheel counterbalance forklift actually rests on three points:

1. The front left drive tire.
2. The front right drive tire.
3. The center pivot pin of the rear steering axle (which rocks up and down so the rear wheels can stay in contact with uneven floors).

When you draw imaginary lines connecting these three points on the floor, they form the Stability Triangle (and when projected upward to the top of the mast, the Stability Pyramid). Inside the forklift is the Combined Center of Gravity (CG), which is the balance point between the heavy rear cast-iron counterweight and the forward load on the forks:

• As long as the Combined CG stays inside the Stability Triangle, the forklift sits upright.
• Why an UNLOADED forklift tips sideways so easily: Many workers assume a forklift only tips when carrying a heavy pallet. In reality, an unloaded forklift with its forks lowered has its center of gravity shifted far backward into the narrow, pointed rear apex of the Stability Triangle near the steering axle. Taking a sharp corner at just 12 kilometers per hour (7.5 miles per hour) in an empty forklift generates enough centrifugal force to push that rear-heavy CG right across the narrow side line of the triangle, flipping the machine onto its side in less than 1.5 seconds.
• Why raising the mast while moving is catastrophic: As you raise a loaded pallet upward, the Combined CG moves upward into the narrow top peak of the Stability Pyramid. Tilting the mast forward, hitting a 3-centimeter (1.2-inch) floor crack, or turning while the load is elevated pushes the CG outside the pyramid immediately.

The biomechanics of the "mousetrap" effect¶

When a sit-down forklift tips laterally, why do unbuckled operators die while buckled operators walk away with minor bruises?

1. Angular velocity of the overhead guard: The steel top frame of a forklift's overhead guard sits roughly 2.1 meters (7 feet) above the concrete floor. When the forklift pivots around its front tire contact patch, the top bar of the steel cage whips downward through a 90-degree arc and strikes the concrete floor at a speed exceeding 25 to 35 kilometers per hour (15 to 22 miles per hour) in roughly 1.2 seconds.
2. The failed jump: An unbuckled operator feels the machine tilt past 15 degrees and tries to leap out the downward side of the cab (because gravity is already pulling their body in that direction). However, pushing off a falling, tilting floorboard provides almost zero horizontal launch force. The operator falls onto the concrete floor directly in the path of the descending steel roof bar.
3. The impact: Fractions of a second after the operator hits the concrete, the 4,500-kilogram (10,000-pound) forklift slams down on top of them, pinning their ribcage, pelvis, or head beneath the 5-centimeter-thick steel overhead guard bar like a giant mousetrap bar snapping shut.
4. Why staying buckled works: Modern forklift seats are equipped with lap seatbelts (and often wrap-around hip restraint wings) specifically engineered to hold your pelvis inside the protective envelope of the 4-post ROPS (Roll-Over Protective Structure) cage. If you grip the steering wheel, plant your feet, and tuck your head and shoulders inward away from the floor, the steel cage hits the concrete first and supports the entire weight of the forklift without touching your torso or skull.

Step-by-step survival protocol during a forklift tip-over¶

1. For a sit-down counterbalance forklift operator¶

If you feel your sit-down forklift lifting its inside wheels and tipping over onto its side or pitching forward:

1. Stay in the seat and do not unbuckle your seatbelt. Fight the reflex to put your foot out toward the ground or jump out of the cab.
2. Grip the steering wheel rim firmly with both hands (thumbs on the outside of the rim): Do not reach out to grab the vertical posts of the overhead guard cage. If your fingers are wrapped around an outer ROPS post when the forklift slams onto the concrete, all 4,500 kilograms of steel will shear your fingers off against the floor.
3. Plant both feet firmly against the floorboard: Pushing back with your legs wedges your lower back and pelvis tightly into the seat bucket.
4. Lean your torso and head AWAY from the direction of the fall: If the forklift is tipping to the left, lean hard to the right toward the uphill side of the cab (and if pitching forward, lean your head and shoulders hard back against the seat backrest). This keeps your head and shoulder clear of the concrete floor when the side of the cage hits.
5. Wait until all movement stops completely before unbuckling: After the initial impact, a heavy pallet falling off the forks can cause the forklift to bounce or roll further. Once the machine is completely still, turn off the ignition key, unbuckle your seatbelt, and climb out through the upward-facing side of the cab.

2. For a stand-up reach truck or order-picker operator¶

Stand-up narrow-aisle reach trucks (where the operator stands in an open rear compartment without a seat or seatbelt) have completely different tip-over and dock-drop dynamics studied extensively by NIOSH and ANSI/ITSDF (B56.1):

• If a stand-up reach truck tips over or begins plunging backward off an open loading dock:
• Immediately release the hand controls and lift your foot off the floor deadman pedal (which engages the emergency electromagnetic brake).
• Step straight backward out of the open rear compartment onto the warehouse floor, moving away from the direction the mast is tipping.
• Never grab the outside edges of the operator compartment or try to jump out the side over the battery box.

Loading dock separation, trailer creep, and landing gear collapse¶

The 1.2-meter (4-foot) vertical drop at a warehouse loading dock edge is a critical hazard zone where forklifts and operators are crushed between 40-ton semi-trailers and concrete dock walls.

如何應對裝卸碼頭跌倒或被壓住的受害者¶

1. 立即阻止半掛卡車司機： 如果拖車開走並將叉車扔進裝卸碼頭井，請吹響碼頭喇叭或跑到院子裡阻止卡車司機，這樣他們就不會將拖車倒回碼頭井並將倒下的操作員壓在混凝土牆上。
2. 切勿使用未額定值的千斤頂或嘗試手動舉起掉落的堆高機： 如果操作員被壓在倉庫地板或碼頭井中傾斜的堆高機下方：
3. 立即撥打 911、112 或 999 並請求消防部門進行重型救援（氣動高壓起重氣墊和液壓吊具）。
4. 評估擠壓症候群：如果沉重的鋼架或桅杆壓住受害者的腿部、骨盆或腹部超過15分鐘，突然舉起重物可能會導致致命的擠壓再灌注綜合症（擠壓肌肉細胞中的鉀湧入心臟並導致立即心臟驟停）。與到達的護理人員協調抬起，他們可以在釋放前靜脈注射液體和碳酸氫鈉，除非受害者的胸部被固定並且無法呼吸（這需要在幾秒鐘內立即抬起以防止窒息）。
5. 如果需要在消防人員到達之前立即提升以允許呼吸： 僅使用額定起重能力超過傾斜部分重量的第二台工業叉車，或大容量工業機械趾式千斤頂。當第二台叉車將傾斜的籠子提升 2 至 5 厘米（1 至 2 英寸）時，站在遠離墜落區域的第二名工人必須在框架下方滑動實心硬木墊塊（4x4 或 6x6 英寸木材） 或實木托盤（“舉起一英寸，墊一英寸”），這樣，如果起重叉打滑，叉車就無法落回到受害者身上。

倉庫托盤架衝擊與骨牌倒塌生存¶

現代選擇性倉庫貨架系統高 8 至 15 公尺（26 至 50 英尺），可容納數百噸托盤庫存。由於這些貨架依賴高軸向壓縮下的薄壁冷軋鋼立柱，叉車撞擊並彎曲單個下部立柱可能會引發整個倉庫災難性的漸進式多米諾骨牌倒塌。

受損托盤架的逐步響應¶

1. 將楔形堆高機留在原地併步行撤離： 如果堆高機被固定在下垂的貨架橫樑下或支撐著彎曲的直立柱，請關閉點火裝置，在觀察頭頂托盤的同時小心地解開安全帶，然後輕快地走出過道，走向主交叉過道（保持在完好的貨架托架下或遠離傾斜方向）。
2. 拉響倉庫疏散警報並清理鄰近的過道： 托盤架倒塌很少局限於單一隔間。當一個隔間向側面倒塌時，它會推倒後面的一排機架（「煙道空間轉移」），並將由水平負載梁連接的相鄰隔間拉倒，形成多米諾骨牌波，在 10 秒內平整數千平方米。疏散受損的過道加上兩側至少兩個完整的過道。
3. 切勿嘗試使用堆高機從明顯傾斜或彎曲的貨架上卸載托盤： 將前移式堆高機開到損壞的貨架上，將沉重的托盤從頂層拉下來，會導致桅杆振動並轉移受損結構的重心，從而導致操作員直接倒塌。等待結構貨架工程師安裝鋼支撐塔並綁紮框架，然後再從上到下卸貨。

倉庫中的電池酸、丙烷洩漏和一氧化碳¶

堆高機碰撞和室內操作會產生三種不同的危險物質緊急情況，取決於堆高機的電源。

1. 液化石油氣（LPG/丙烷）罐洩漏和一氧化碳¶

• 丙烷蒸氣匯集：如果丙烷驅動的堆高機翻倒或倒回護柱並剪斷黃銅罐閥門或調節器軟管，液態丙烷會閃變成濃密的白色霜雲，其比空氣重 1.5 倍。與上升到倉庫天花板的天然氣不同，丙烷緊貼混凝土地板，向下流入裝貨碼頭坑和地漏，如果接觸到電池充電器火花、收縮包裝熱風槍或指示燈就會爆炸。
• 措施： 如果可以安全到達且無需穿過液霜，請**順時針（向右）**轉動液化石油氣鋼瓶頂部的黃銅手輪以關閉氣流。消除所有火源，疏散該區域，並打開捲簾門以驅散地面蒸汽。如果結霜的液體丙烷噴灑到皮膚上，請將其視為嚴重低溫 凍傷 用溫水加熱（切勿摩擦冷凍的皮膚）。
• 室內一氧化碳 (\(CO\)) 中毒： 在封閉倉庫內或在碼頭門關閉的冷藏半掛車內操作調校不當的丙烷、汽油或柴油叉車，會產生致命的無味濃度 一氧化碳 15 至 30 分鐘內。如果倉庫工人出現劇烈頭痛、噁心、頭暈或神智不清，請立即打開所有庫門，關閉內燃叉車，將工人轉移到空氣新鮮的地方，並撥打 911、112 或 999。

2.鉛酸電動堆高機與鋰離子電動堆高機的緊急處理¶

• 鉛酸工業電池（硫酸和氫氣）： 標準 36 伏特或 48 伏特工業堆高機電池重量 900 至 1,800 公斤（2,000 至 4,000 磅），包含數百公升 35% 硫酸 (\(H_2SO_4\)) 電解液。
• 當電池供電的堆高機翻倒時，腐蝕性電池酸會從電池通風蓋流出，流到地板上。
• 操作： 拉動重型塑膠 Anderson 主電池斷開手柄 以切斷電源，以免濕酸使框架短路。切勿徒手接觸傾斜式電動堆高機周圍溢出的液體。如果電池酸濺入工人的眼睛或皮膚上，請立即將他們帶到倉庫配有管道的緊急洗眼器和淋浴噴頭，並用大量流水沖洗至少15至20分鐘，同時保持眼瞼打開，然後使用蘇打灰（碳酸鈉）或電池充電站溢出套件中的商用酸中和劑枕頭來控制地板溢出物。
• **鋰離子工業電池（熱失控）：**如果鋰離子堆高機電池被另一台堆高機的尖齒刺穿，或開始發出嘶嘶聲、爆裂聲並排出刺鼻的白灰色煙霧（釋放有毒氟化氫和易燃電解質蒸氣），請勿使用乾粉滅火器，它無法阻止內部電池反應。立即疏散倉庫，拉響火警警報，並讓消防人員在安全距離外用大量水冷卻電池外殼；看 鋰離子電池起火。

常見問題¶

相關指南¶

• 擠壓傷和骨筋膜室綜合徵
• 工傷和工業事故
• Spinal injuries: immobilization and care
• Carbon monoxide poisoning
• Chemical spills and hazardous materials
• 鋰離子電池起火

來源已檢查¶

• Occupational Safety and Health Administration (OSHA, United States): Powered Industrial Trucks Standard (29 CFR 1910.178) and Loading Dock Safety Bulletins
• National Institute for Occupational Safety and Health (NIOSH / CDC, United States): Preventing Injuries and Deaths of Workers Who Operate or Work Near Forklifts (NIOSH Publication No. 2001-109)
• Industrial Truck Standards Development Foundation (ANSI / ITSDF, United States): Safety Standard for Low Lift and High Lift Trucks (ANSI/ITSDF B56.1)
• Health and Safety Executive (HSE, United Kingdom): Rider-Operated Lift Trucks: Operator Training and Safe Use (Approved Code of Practice L117) and Warehousing and Storage: A Guide to Health and Safety (HSG76)
• Canadian Centre for Occupational Health and Safety (CCOHS, Canada): Forklift Trucks: Stability Triangle, Tip-Over Procedures, and Loading Dock Restraints