TAILIEUCHUNG - Clutches and brakes design and selection P5

This chapter on disk brakes and clutches will consider annular contact disk clutches and both caliper and annular contact disk brakes, as illustrated in Figures 1, 2, and 3. Caliper disk brakes, as shown in Figure 1, are used on aircraft, automotive, industrial, and mining equipment. Their two main advantages compared to drum brakes are greater heat dissipation, and hence less fading, because of their open construction, and a more uniform braking action, due to self-cleaning by brake pad abrasion. Their main disadvantage is that they require a larger activation force than is required for drum brakes because they have. | 5 Dry and Wet Disk Brakes and Clutches This chapter on disk brakes and clutches will consider annular contact disk clutches and both caliper and annular contact disk brakes as illustrated in Figures 1 2 and 3. Caliper disk brakes as shown in Figure 1 are used on aircraft automotive industrial and mining equipment. Their two main advantages compared to drum brakes are greater heat dissipation and hence less fading because of their open construction and a more uniform braking action due to self-cleaning by brake pad abrasion. Their main disadvantage is that they require a larger activation force than is required for drum brakes because they have neither a friction moment nor servo action to aid in brake application. Annular contact disk brakes and clutches are available as either dry or wet brakes as shown in Figure 2 and 3. These units may be used as either a brake or as a clutch because the only differences between the two are whether one side of the unit is fastened to a stationary frame or to a rotating shaft and whether the unit has the necessary fittings for it to be controlled while in rotation. For example both of these functions are combined in Minster combination dry clutch and brake units illustrated in Figure 2 which are pneumatically controlled using air passages in the shaft to the combination unit. Wet multiple-disk brakes and clutches illustrated in Figure 3 have similar multiple-disk construction but operate in an oil bath. Thus these brakes are isolated from dirt and water and the circulation of the oil through a heat exchanger usually provides greater heat dissipation than can be had from direct air cooling. Because of these advantages wet brakes have been Copyright 2004 Marcel Dekker Inc. Figure 1 Floating or sliding caliper disk brake. Courtesy of Misco Inc. North Mankato MN. used on large earth-moving equipment on mine shuttle cars and similar equipment which may require large braking torque and which may be designed to operate in a dirty .

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.