TWI717903B - Drum brake device - Google Patents
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- TWI717903B TWI717903B TW108141882A TW108141882A TWI717903B TW I717903 B TWI717903 B TW I717903B TW 108141882 A TW108141882 A TW 108141882A TW 108141882 A TW108141882 A TW 108141882A TW I717903 B TWI717903 B TW I717903B
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Abstract
Description
本發明之實施例係有關於一種煞車裝置,特別係有關於一種鼓式煞車裝置。The embodiment of the present invention relates to a brake device, and particularly relates to a drum brake device.
習知之鼓式煞車裝置包括第一煞車蹄片、第一摩擦材、第二煞車蹄片以及第二摩擦材。第一摩擦材設於第一煞車蹄片,第二摩擦材設於第二煞車蹄片。第一摩擦材以及第二摩擦材適於對機車之輪轂進行煞車。在習知技術中,第一摩擦材與第二摩擦材的尺寸相同,然而,經長時間使用後,第一摩擦材與第二摩擦材的磨耗量並不相同。如此造成了煞車力的降低,並影響了駕駛上的安全性。The conventional drum brake device includes a first brake shoe, a first friction material, a second brake shoe and a second friction material. The first friction material is arranged on the first brake shoe, and the second friction material is arranged on the second brake shoe. The first friction material and the second friction material are suitable for braking the wheel hub of the locomotive. In the prior art, the size of the first friction material and the second friction material are the same. However, after a long period of use, the wear amount of the first friction material and the second friction material are not the same. This causes a reduction in braking force and affects driving safety.
本發明之實施例係為了欲解決習知技術之問題而提供之一種鼓式煞車裝置,適於對一機車之一輪轂進行煞車,包括一煞車盤座、一銷、一第一煞車蹄片、一第一摩擦材、一第二煞車蹄片、一第二摩擦材、一彈力單元以及一煞車凸輪。煞車盤座具有一盤座軸心。銷設於該煞車盤座。第一煞車蹄片以可轉動的方式連接該銷。第一摩擦材設於該第一煞車蹄片。第二煞車蹄片以可轉動的方式連接該銷。第二摩擦材設於該第二煞車蹄片。彈力單元連接該第一煞車蹄片以及該第二煞車蹄片。煞車凸輪設於該煞車盤座,其中,該煞車凸輪於一第一凸輪方位以及一第二凸輪方位間轉動,當該煞車凸輪處於該第一凸輪方位時,該第一煞車蹄片與該第二煞車蹄片收合,該第一摩擦材以及第二摩擦材均未接觸該輪轂,當該煞車凸輪處於該第二凸輪方位時,該第一煞車蹄片與該第二煞車蹄片撐開,該第一摩擦材以及第二摩擦材適於接觸該輪轂,其中,該第一摩擦材與該輪轂之間具有一第一接觸面積,該第二摩擦材與該輪轂之間具有一第二接觸面積,該第一接觸面積大於該第二接觸面積。The embodiment of the present invention provides a drum brake device in order to solve the problems of the prior art, which is suitable for braking a wheel hub of a locomotive, and includes a brake disc seat, a pin, a first brake shoe, A first friction material, a second brake shoe, a second friction material, an elastic unit and a brake cam. The brake disc seat has a disc seat axis. Pin it on the brake disc seat. The first brake shoe is connected to the pin in a rotatable manner. The first friction material is arranged on the first brake shoe. The second brake shoe is connected to the pin in a rotatable manner. The second friction material is arranged on the second brake shoe. The elastic unit is connected to the first brake shoe and the second brake shoe. The brake cam is arranged on the brake disc seat, wherein the brake cam rotates between a first cam orientation and a second cam orientation. When the brake cam is in the first cam orientation, the first brake shoe and the second cam The two brake shoes are folded. The first friction material and the second friction material are not in contact with the wheel hub. When the brake cam is in the second cam position, the first brake shoe and the second brake shoe are spread apart , The first friction material and the second friction material are suitable for contacting the hub, wherein there is a first contact area between the first friction material and the hub, and there is a second friction material between the second friction material and the hub The contact area, the first contact area is larger than the second contact area.
在一實施例中,當該機車前進時,該輪轂繞該煞車盤座沿一第一方向轉動,該輪轂上具有一參考點,在該參考點經過該銷之後,該參考點先經過該第二摩擦材,再經過該煞車凸輪,最後過該第一摩擦材,再回到該銷。In one embodiment, when the locomotive moves forward, the hub rotates around the brake disc seat in a first direction, and the hub has a reference point. After the reference point passes the pin, the reference point first passes the second The second friction material passes through the brake cam, finally passes through the first friction material, and then returns to the pin.
在一實施例中,該第二接觸面積與該第一接觸面積的比值介於68%~15%之間。In one embodiment, the ratio of the second contact area to the first contact area is between 68% and 15%.
在一實施例中,該第二接觸面積與該第一接觸面積的比值介於44%~31%之間。In one embodiment, the ratio of the second contact area to the first contact area is between 44% and 31%.
在一實施例中,該第二接觸面積與該第一接觸面積的比值符合下列關係式:
在一實施例中,該彈力單元包括一第一彈簧以及一第二彈簧,該第一彈簧之一端連接該第一煞車蹄片,該第一彈簧之另一端連接該第二煞車蹄片,該第二彈簧之一端連接該第一煞車蹄片,該第二彈簧之另一端連接該第二煞車蹄片,該第一彈簧平行於該第二彈簧,該盤座軸心位於該第一彈簧與該第二彈簧之間。In an embodiment, the elastic unit includes a first spring and a second spring, one end of the first spring is connected to the first brake shoe, the other end of the first spring is connected to the second brake shoe, the One end of the second spring is connected to the first brake shoe, the other end of the second spring is connected to the second brake shoe, the first spring is parallel to the second spring, and the disc seat axis is located between the first spring and Between the second spring.
在另一實施例中,本發明提供一種鼓式煞車裝置,適於對一機車之一輪轂進行煞車,包括一煞車盤座、一銷、一第一煞車蹄片、一第一摩擦材、一第二煞車蹄片、一第二摩擦材、一彈力單元以及一煞車凸輪。煞車盤座具有一盤座軸心。銷設於該煞車盤座。第一煞車蹄片以可轉動的方式連接該銷。第一摩擦材設於該第一煞車蹄片。第二煞車蹄片以可轉動的方式連接該銷。第二摩擦材設於該第二煞車蹄片。彈力單元連接該第一煞車蹄片以及該第二煞車蹄片。煞車凸輪設於該煞車盤座,其中,該煞車凸輪於一第一凸輪方位以及一第二凸輪方位間轉動,當該煞車凸輪處於該第一凸輪方位時,該第一煞車蹄片與該第二煞車蹄片收合,該第一摩擦材以及第二摩擦材均未接觸該輪轂,當該煞車凸輪處於該第二凸輪方位時,該第一煞車蹄片與該第二煞車蹄片撐開,該第一摩擦材以及第二摩擦材適於接觸該輪轂,其中,該第一摩擦材在該煞車盤座之一周向上具有一第一摩擦材長度,該第二摩擦材在該煞車盤座之該周向上具有一第二摩擦材長度,該第一摩擦材長度大於該第二摩擦材長度。In another embodiment, the present invention provides a drum brake device suitable for braking a wheel hub of a locomotive, comprising a brake disc seat, a pin, a first brake shoe, a first friction material, and a The second brake shoe, a second friction material, an elastic unit and a brake cam. The brake disc seat has a disc seat axis. Pin it on the brake disc seat. The first brake shoe is connected to the pin in a rotatable manner. The first friction material is arranged on the first brake shoe. The second brake shoe is connected to the pin in a rotatable manner. The second friction material is arranged on the second brake shoe. The elastic unit is connected to the first brake shoe and the second brake shoe. The brake cam is arranged on the brake disc seat, wherein the brake cam rotates between a first cam orientation and a second cam orientation. When the brake cam is in the first cam orientation, the first brake shoe and the second cam The two brake shoes are folded. The first friction material and the second friction material are not in contact with the wheel hub. When the brake cam is in the second cam position, the first brake shoe and the second brake shoe are spread apart , The first friction material and the second friction material are suitable for contacting the wheel hub, wherein the first friction material has a first friction material length in a circumferential direction of the brake disc seat, and the second friction material is in the brake disc seat The circumferential direction has a second friction material length, and the first friction material length is greater than the second friction material length.
應用本發明實施例之鼓式煞車裝置,可以使該第一摩擦材與該第二摩擦材的磨耗量相當,藉此可以維持煞車力、提升駕駛的安全性,在一實施例中,也可提高鼓式煞車裝置的使用壽命。By applying the drum brake device of the embodiment of the present invention, the wear amount of the first friction material and the second friction material can be equalized, thereby maintaining the braking force and improving the safety of driving. In one embodiment, it can also be Improve the service life of drum brakes.
參照第1圖,其係顯示本發明實施例之機車M的外型,包括龍頭91、前輪92、後輪93、坐墊94、動力系統95等元件。Referring to Figure 1, it shows the appearance of the locomotive M according to the embodiment of the present invention, including the
機車M包含前段、中段以及後段等等部分。機車M之前段設有龍頭91、前輪92、方向燈以及鑰匙孔等元件。機車M之中段設有動力系統95、坐墊94及腳架等元件。機車M之後段設有尾燈、後輪93、擋泥板等元件。The locomotive M includes a front section, a middle section, and a rear section. The front section of the locomotive M is provided with components such as a
龍頭91用以控制機車M的行進方向,龍頭91上可裝設有機能零件,包括儀錶、開關、後照鏡等單元。龍頭91也具有把手(包含加油握把)以及手煞車,使用者可透過把手操控龍頭91的轉向,透過加油握把調整動力系統95之節氣門角度以控制動力輸出,並透過手煞車將機車M減速。龍頭91上也可裝設有主燈,主燈為機車M提供主要光線照明。The
龍頭91與前輪92透過龍頭旋轉軸連動,藉此透過旋轉龍頭91可控制前輪92的角度,從而控制機車M的行進方向。The
動力系統95連接並驅動後輪93,藉此為機車M提供動力,使機車M前進。The
第2圖係顯示本發明實施例之鼓式煞車裝置,其適於對前述機車M之車輪的輪轂8進行煞車。參照第2圖,該鼓式煞車裝置B包括一煞車盤座3、一銷4、一第一煞車蹄片1、一第一摩擦材11、一第二煞車蹄片2、一第二摩擦材21、一彈力單元5以及一煞車凸輪6。煞車盤座3具有一盤座軸心31。銷4設於該煞車盤座3。第一煞車蹄片1以可轉動的方式連接該銷4。第一摩擦材11設於該第一煞車蹄片1。第二煞車蹄片2以可轉動的方式連接該銷4。第二摩擦材21設於該第二煞車蹄片2。彈力單元5連接該第一煞車蹄片1以及該第二煞車蹄片2。煞車凸輪6設於該煞車盤座3。Figure 2 shows a drum brake device according to an embodiment of the present invention, which is suitable for braking the
參照第2圖,該煞車凸輪6於一第一凸輪方位以及一第二凸輪方位間轉動,當該煞車凸輪6處於該第一凸輪方位時,該第一煞車蹄片1與該第二煞車蹄片2收合,該第一摩擦材11以及第二摩擦材21均未接觸該輪轂。當該煞車凸輪6處於該第二凸輪方位時,該第一煞車蹄片1與該第二煞車蹄片2撐開,該第一摩擦材11以及第二摩擦材21適於接觸該輪轂8,其中,該第一摩擦材11與該輪轂8之間具有一第一接觸面積,該第二摩擦材21與該輪轂8之間具有一第二接觸面積,該第一接觸面積大於該第二接觸面積。Referring to Figure 2, the
在該第一摩擦材11與該第二摩擦材21的材料寬度相同的情況下。該第一摩擦材11在該煞車盤座3之一周向上具有一第一摩擦材長度L1,該第二摩擦材21在該煞車盤座3之該周向上具有一第二摩擦材長度L2,該第一摩擦材長度L1大於該第二摩擦材長度L2。When the material width of the first friction material 11 and the
參照第2圖,在一實施例中,當該機車前進時,該輪轂8繞該煞車盤座3沿一第一方向α轉動,該輪轂8上具有一參考點81(虛擬參考點),在該參考點81經過該銷4之後,該參考點81先經過該第二摩擦材21,再經過該煞車凸輪6,最後過該第一摩擦材11,再回到該銷4。Referring to Figure 2, in an embodiment, when the locomotive is moving forward, the
參照第2圖,在一實施例中,該彈力單元5包括一第一彈簧51以及一第二彈簧52,該第一彈簧51之一端連接該第一煞車蹄片1,該第一彈簧51之另一端連接該第二煞車蹄片2,該第二彈簧52之一端連接該第一煞車蹄片1,該第二彈簧52之另一端連接該第二煞車蹄片2,該第一彈簧51平行於該第二彈簧52,該盤座軸心31位於該第一彈簧51與該第二彈簧52之間。Referring to Figure 2, in an embodiment, the elastic unit 5 includes a
第3圖係顯示本發明實施例之鼓式煞車裝置的設計參數。參照第3圖,在一實施例中,該第二接觸面積與該第一接觸面積的比值符合下列關係式:
以下說明上述公式的計算原理,當鼓式煞車裝置B進行煞車時,煞車凸輪6之第一作用端61對該第一煞車蹄片1施加一作用力Fa,該輪轂8對該第一煞車蹄片1施加一反作用力Fn1,該輪轂8與該第一摩擦材11之間產生摩擦力Ff1,上述作用力Fa、反作用力Fn1以及摩擦力Ff1相對於該銷4的力矩和會等於零,因此得到下列關係式:
又因為摩擦力Ff1等於反作用力Fn1乘以摩擦係數μ,因此
同樣的,當鼓式煞車裝置B進行煞車時,煞車凸輪6之第二作用端62對該第二煞車蹄片2施加作用力Fa,該輪轂8對該第二煞車蹄片2施加一反作用力Fn2,該輪轂8與該第二摩擦材21之間產生摩擦力Ff2,上述作用力Fa、反作用力Fn2以及摩擦力Ff2相對於該銷4的力矩和會等於零,因此得到下列關係式:
又因為摩擦力Ff2等於反作用力Fn2乘以摩擦係數μ,因此
在設計上為了讓第一摩擦材11與第二摩擦材21的磨損量相當,因此必須控制第一摩擦材11與第二摩擦材21的面壓相當,換言之,基於 ,該第二接觸面積與該第一接觸面積的比值需符合下列關係式,藉此使得磨耗量保持一致:
在一實施例中,該第二接觸面積與該第一接觸面積的比值介於44%~31%之間。又,在本發明之一實施例中,該第二接觸面積與該第一接觸面積的比值介於68%~15%之間。In one embodiment, the ratio of the second contact area to the first contact area is between 44% and 31%. Furthermore, in an embodiment of the present invention, the ratio of the second contact area to the first contact area is between 68% and 15%.
應用本發明實施例之鼓式煞車裝置,可以使該第一摩擦材與該第二摩擦材的磨耗量相當,藉此可以維持煞車力、提升駕駛的安全性,在一實施例中,也可提高鼓式煞車裝置的使用壽命。By applying the drum brake device of the embodiment of the present invention, the wear amount of the first friction material and the second friction material can be equalized, thereby maintaining the braking force and improving the safety of driving. In one embodiment, it can also be Improve the service life of drum brakes.
在本發明之實施例中,以燃油機車為例,然而,上述揭露並未限制本發明。本發明所定義之機車可以包括燃油機車、電動機車或其他機動車輛。In the embodiment of the present invention, a fuel locomotive is taken as an example, however, the above disclosure does not limit the present invention. The locomotive defined in the present invention may include a fuel locomotive, an electric locomotive or other motor vehicles.
雖然本發明已以具體之較佳實施例揭露如上,然其並非用以限定本發明,任何熟習此項技術者,在不脫離本發明之精神和範圍內,仍可作些許的更動與潤飾,因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in specific preferred embodiments as above, it is not intended to limit the present invention. Anyone familiar with the art can still make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to those defined by the attached patent application scope.
B:鼓式煞車裝置 1:第一煞車蹄片 11:第一摩擦材 2:第二煞車蹄片 21:第二摩擦材 3:煞車盤座 31:盤座軸心 4:銷 5:彈力單元 51:第一彈簧 52:第二彈簧 6:煞車凸輪 61:第一作用端 62:第二作用端 h1、h2、b、c1、c2:距離 8:輪轂 81:參考點 L1:第一摩擦材長度 L2:第二摩擦材長度 α:第一方向 Fa:作用力 Ff1:摩擦力 Ff2:摩擦力 Fn1:反作用力 Fn2:反作用力 91:龍頭 92:前輪 93:後輪 94:坐墊 95:動力系統 M:機車 B: Drum brake 1: The first brake shoe 11: The first friction material 2: The second brake shoe 21: The second friction material 3: Brake seat 31: Disc seat axis 4: pin 5: Elastic unit 51: first spring 52: second spring 6: Brake cam 61: first acting end 62: second acting end h1, h2, b, c1, c2: distance 8: Wheel hub 81: reference point L1: Length of the first friction material L2: Length of second friction material α: First direction Fa: force Ff1: friction Ff2: friction Fn1: reaction force Fn2: reaction force 91: Dragon Head 92: front wheel 93: rear wheel 94: cushion 95: Power System M: locomotive
第1圖係顯示本發明實施例之機車的外型。 第2圖係顯示本發明實施例之鼓式煞車裝置。 第3圖係顯示本發明實施例之鼓式煞車裝置的設計參數。 Figure 1 shows the appearance of the locomotive of the embodiment of the present invention. Figure 2 shows a drum brake device according to an embodiment of the present invention. Figure 3 shows the design parameters of the drum brake device of the embodiment of the present invention.
B:鼓式煞車裝置 B: Drum brake
1:第一煞車蹄片 1: The first brake shoe
11:第一摩擦材 11: The first friction material
2:第二煞車蹄片 2: The second brake shoe
21:第二摩擦材 21: The second friction material
3:煞車盤座 3: Brake seat
31:盤座軸心 31: Disc seat axis
4:銷 4: pin
5:彈力單元 5: Elastic unit
51:第一彈簧 51: first spring
52:第二彈簧 52: second spring
6:煞車凸輪 6: Brake cam
61:第一作用端 61: first acting end
62:第二作用端 62: second acting end
8:輪轂 8: Wheel hub
81:參考點 81: reference point
L1:第一摩擦材長度 L1: Length of the first friction material
L2:第二摩擦材長度 L2: Length of second friction material
α:第一方向 α: First direction
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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TW108141882A TWI717903B (en) | 2019-11-19 | 2019-11-19 | Drum brake device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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TW108141882A TWI717903B (en) | 2019-11-19 | 2019-11-19 | Drum brake device |
Publications (2)
Publication Number | Publication Date |
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TWI717903B true TWI717903B (en) | 2021-02-01 |
TW202120831A TW202120831A (en) | 2021-06-01 |
Family
ID=75745626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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TW108141882A TWI717903B (en) | 2019-11-19 | 2019-11-19 | Drum brake device |
Country Status (1)
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TW (1) | TWI717903B (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3647033A (en) * | 1970-05-21 | 1972-03-07 | Bendix Corp | Secondary shoe brake lining |
US4732240A (en) * | 1987-04-10 | 1988-03-22 | General Motors Corporation | Drum brake assembly, brake shoes for same, and method |
CN202012592U (en) * | 2011-04-18 | 2011-10-19 | 苏社芳 | Brake shoe structure used in brakes of tricycles and other vehicles |
CN203114957U (en) * | 2012-12-20 | 2013-08-07 | 青特集团有限公司 | Leading trailing brake for supporting axle |
CN106662178A (en) * | 2014-07-24 | 2017-05-10 | 塞夫霍兰德有限公司 | Drum brake |
-
2019
- 2019-11-19 TW TW108141882A patent/TWI717903B/en active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3647033A (en) * | 1970-05-21 | 1972-03-07 | Bendix Corp | Secondary shoe brake lining |
US4732240A (en) * | 1987-04-10 | 1988-03-22 | General Motors Corporation | Drum brake assembly, brake shoes for same, and method |
CN202012592U (en) * | 2011-04-18 | 2011-10-19 | 苏社芳 | Brake shoe structure used in brakes of tricycles and other vehicles |
CN203114957U (en) * | 2012-12-20 | 2013-08-07 | 青特集团有限公司 | Leading trailing brake for supporting axle |
CN106662178A (en) * | 2014-07-24 | 2017-05-10 | 塞夫霍兰德有限公司 | Drum brake |
Also Published As
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TW202120831A (en) | 2021-06-01 |
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