鍖椾含鏈烘宸ヤ笟瀛﹂櫌鏈烘璁捐鑰冮涓庣瓟妗?/p>
涓�銆?/p>
鏄潪棰橈紙鏈?/p>
5
灏忛锛屾瘡棰?/p>
1
鍒嗭紝鍏?/p>
5
鍒嗐�傛
纭湪鎷彿鍐呭啓鈥?/p>
T
鈥濓紝閿欒
鍦ㄦ嫭鍙峰唴鍐欌�?/p>
F
鈥濓級
2
锛庢粴鍔ㄨ酱鎵跨殑杞村悜绯绘暟
Y
鍊艰秺澶э紝鍏舵壙鍙楄酱鍚戣兘鍔涜秺澶с�傦紙
F
4
锛庤璁¤湕鏉嗕紶鍔ㄦ椂锛屼负浜嗘彁楂樹紶鍔ㄦ晥鐜囷紝鍙互澧炲姞铚楁潌鐨勫ご鏁般�傦紙
T
锛?/p>
浜屻�侀�夋嫨棰橈紙鏈?/p>
5
灏忛锛屾瘡棰?/p>
2
鍒?/p>
,
鍏?/p>
10
鍒嗐�傚湪姣忓皬棰樼殑閫夐」涓紝鍙湁涓�椤规槸
绗﹀悎棰樼洰瑕佹眰鐨勶紝鎶婃墍閫夐」鐨勫瓧姣嶅～鍦ㄩ涓殑妯嚎涓婏級
涓?/p>
12
锛庡甫浼犲姩鐨勫け鏁堝舰寮忎负
鎵撴粦
鍜?/p>
鐤插姵鐮村潖
銆傚洜姝わ紝鍏朵富瑕佽璁′緷
鎹负
鍦ㄤ繚璇佸甫浼犲姩涓嶆墦婊戠殑鏉′欢涓嬶紝鍏锋湁涓�瀹氱殑鐤插姵寮哄害鍜屽鍛?/p>
銆?/p>
13
锛庤酱鎸夋壙杞藉垎涓?/p>
蹇冭酱
锛?/p>
杞酱
鍜?/p>
浼犲姩杞?/p>
銆?/p>
14
锛庤灪绾硅仈鎺ユ寜闃叉澗鍘熺悊鍙垎涓?/p>
鎽╂摝闃叉澗
锛?/p>
鏈烘闃叉澗
鍜?/p>
鍏跺畠闃?/p>
鏉?/p>
銆?/p>
15
锛庣伆閾搁搧榻胯疆甯哥敤浜?/p>
寮�
寮忎紶鍔ㄤ腑锛岃繖绉嶉娇杞殑涓昏澶辨晥褰㈠紡鏄?/p>
纾ㄦ崯
銆?/p>
鍏�佽绠楅锛堟湁
2
灏忛锛屾瘡棰?/p>
6
鍒?/p>
,
鍏?/p>
12
鍒嗭級
23
锛庝竴瀵?/p>
46210
瑙掓帴瑙︾悆杞存壙鍙?
瀹夎锛屽鍥?/p>
1
鎵�绀恒�傚凡鐭ヨ酱鎵?/p>
1
鍜岃酱鎵?/p>
2
鐨勫緞鍚戣浇鑽峰垎鍒负
R
1
=2000N,
R
2
=4000N,
杞翠笂浣滅敤鐨勮酱鍚戣浇鑽?/p>
F
a
=800N(
鎸囧悜杞存壙
2)
锛岃酱鎵跨殑娲剧敓杞村悜鍔?/p>
S
鐨勮绠楀紡
S
=0.68
R
锛?/p>
e
=0.68
锛?/p>
X
=0.41,
Y
=0.87
銆傝酱鎵胯浇鑽锋湁杞诲井鍐插嚮锛岃浇鑽风郴鏁?/p>
f
F
=1.2
锛?/p>
宸ヤ綔娓╁害涓嶅ぇ浜?/p>
120
飥?/p>
C
銆傝瘯姹傦細
(1)
杞存壙
1
鍜岃酱鎵?/p>
2
鐨勮酱鍚戣浇鑽?/p>
A
1
鍜?/p>
A
2
锛?/p>
(2)
杞存壙
1
鍜岃酱鎵?/p>
2
鐨勫綋閲忓姩杞借嵎
P
1
鍜?/p>
P
2
銆?/p>
瑙?/p>
:(1)
璁＄畻杞存壙鐨勮酱鍚戣浇鑽?/p>
S
1
=0.68
R
1
=0.68
脳
2000=1360 N
S
2
=0.68
R
2
=0.68
脳
4000=2720 N
S
1
銆?/p>
S
2
鏂瑰悜瑙佸浘
2
鍥犱负
F
a
+
S
2
=800+2720=3520 N
锛?/p>
S
1
鎵�浠?/p>
杞存壙
1
鈥滃帇绱р�濓紝
A
1
=
F
a
+
S
2
=800+2720=3520 (2
鍒?/p>
)
杞存壙
2
鈥滄斁鏉锯�濓紝
A
2
=
S
2
=2720 N(2
鍒?/p>
)
锛?/p>
2
锛夎绠楄酱鎵跨殑褰撻噺鍔ㄨ浇鑽?/p>
杞存壙
1
A
1
/
R
1
=3520/2000=1.76
锛?/p>
e
=0.68,
鍒欏彇
X
1
=0.41,
Y
1
=0.87
P
1
=
f
F
(
X
1
R
1
+
Y
1
A
1
)
=1.2
脳
(0.41
脳
2000+0.87
脳
3520)=3882.4 N (2
鍒?/p>
)
杞存壙
2
A
2
/
R
1
=2720/4000=0.68
鈮?/p>
e
=0.68,
鍒欏彇
X
2
=1,
Y
2
=0
P
2
=
f
F
X
2
R
2
=1.2
脳
1
脳
4000=4800 N (2
鍒?/p>
)
24
锛?/p>
宸?/p>
鐭?/p>
V
甯?/p>
浼?/p>
鍔?/p>
涓?/p>
锛?/p>
鏈�
澶?/p>
浼?/p>
閫?/p>
鍔?/p>
鐜?/p>
P
=8kW
锛?/p>
甯?/p>
鐨?/p>
閫?/p>
搴?/p>
v
=10m/s
锛岃嫢绱ц竟鎷夊姏
F
1
涓烘澗杈规媺鍔?/p>
F
2
鐨?/p>
2
鍊嶏紝姝ゆ椂灏忓甫杞笂鍖呰
飥?/p>
1
=120
飥?/p>
锛屾眰锛氾紙
1
锛夋湁鏁堟媺鍔?/p>
F
e
锛涳紙
2
锛夌揣杈规媺鍔?/p>
F
1
锛涳紙
3
锛夊綋閲忔懇鎿?
鍥?/p>
1
鍥?/p>
2
绗叚澶ч绗?/p>
23
灏忛绛旀鍥?/p>