顎式破碎機(jī)鄂破破石機(jī)粉碎機(jī)鄂破機(jī)PE250x400

顎式破碎機(jī)又作鄂式破碎機(jī)，簡(jiǎn)稱顎破，主要用于對(duì)各種礦石與大塊物料的中等粒度破碎，廣泛運(yùn)用于礦山、化工、冶煉、建材、公路、鐵路、水利和化工等行業(yè)。可對(duì)抗壓強(qiáng)度不大于320MPa的各種礦石、巖石等物料進(jìn)行粗、中碎作業(yè)，是礦石破碎機(jī)、煤矸石破碎機(jī)等礦石物料破碎的先選設(shè)備。性能特點(diǎn)為破碎比大，產(chǎn)品粒度均勻，結(jié)構(gòu)簡(jiǎn)單，性能可以，維修簡(jiǎn)便，運(yùn)營(yíng)費(fèi)用低。

顎式破碎機(jī)鄂破機(jī)粉碎機(jī)PE250x400

主要部件

1.機(jī)架

機(jī)架是上下開(kāi)口的四壁剛性框架，用作支撐偏心軸并承受破碎物料的反作用力，要求有足夠的強(qiáng)度和剛度，一般用鑄鋼整體鑄造，小型機(jī)也可用好的鑄鐵代替鑄鋼。大型機(jī)的機(jī)架需分段鑄成，再用螺栓牢固鏈接成整體，鑄造工藝復(fù)雜。自制小型顎式破碎機(jī)的機(jī)架也可用厚鋼板焊接而成，但剛度較差。

2.顎板和側(cè)護(hù)板

定顎和動(dòng)顎都由顎床和顎板組成，顎板是工作部分，用螺栓和楔鐵固定在顎床上。定顎的顎床就是機(jī)架前壁，動(dòng)顎顎床懸掛在周上，要有足夠的強(qiáng)度和剛度，以承受破碎反力，因而大多是鑄鋼或鑄鐵件。

3.傳動(dòng)件

偏心軸是破碎機(jī)的主軸，受有巨大的彎扭力，采用高碳鋼制造。偏心部分須精加工、熱處理、軸承襯瓦用巴氏合金澆注。偏心軸一端裝帶輪，另一端裝飛輪。

4.調(diào)節(jié)裝置

調(diào)節(jié)裝置有楔塊式，墊板式和液壓式等，一般采用楔塊式，由前后兩塊楔塊組成，前楔塊可前后移動(dòng)，頂住后推板；后楔塊為調(diào)節(jié)楔，可上下移動(dòng)，兩楔塊的斜面倒向貼合，由螺桿使后楔塊上下移動(dòng)而調(diào)節(jié)出料口大小。小型顎式破碎機(jī)的出料口調(diào)節(jié)是利用增減后推力板支座與機(jī)架之間的墊片多少來(lái)實(shí)現(xiàn)。

5.飛輪

顎式破碎機(jī)的飛輪用以存儲(chǔ)動(dòng)顎空行程時(shí)的能量，再用于工業(yè)形成，使機(jī)械的工作符合趨于均勻。帶輪也起著飛輪的作用。飛輪常以鑄鐵或鑄鋼制造，小型機(jī)的飛輪常制成整體式。飛輪制造，安裝時(shí)要注意靜平衡。

6.潤(rùn)滑裝置

偏心軸軸承通常采用集中循環(huán)潤(rùn)滑。心軸和推力板的支撐面一般采用潤(rùn)滑脂通過(guò)手動(dòng)油槍給油。動(dòng)顎的擺角很小，使心軸與軸瓦之間潤(rùn)滑困難，常在軸瓦底部開(kāi)若干軸向油溝，中間開(kāi)一環(huán)向油槽使之連通，再用油泵強(qiáng)制注入干黃油進(jìn)行潤(rùn)滑。

顎式破碎機(jī)鄂破機(jī)粉碎機(jī)PE250x400

Jaw cruasher Jaw cruasher Jaw cruasher Jaw cruasher Jaw cruasher Jaw cruasherPE250x400

Jaw cruasher is also called jaw cruasher for short. It is mainly used for medium-sized cruashing of various ores and large materials and is widely used in mining, chemical industry, smelting, building materials, highway, railway, water conservancy and chemical industry. It can perform coarse and medium cruashing operations on various ores, rocks and other materials with compressive strength not greater than 320 MPa. It is the preferred equipment for cruashing ore materials such as ore cruashers and gangue cruashers. The performance characteristics are large cruashing ratio, uniform product particle size, simple structure, reliable performance, easy maintenance and low operating cost.

Main components

1. Rack

The rack is a four wall rigid frame with upper and lower openings, used to support eccenltric shafts and withstand the reaction force of cruashed materials. It requires sufficient strength and rigidity, and is generally ceast as a whole with ceast steel. High quality ceast iron can also be used instead of ceast steel for small machines. The frame of a large machine needs to be ceast in sections and firmly connected into a whole with bolts, and the ceasting process is complex. The frame of a homemade small jaw cruasher can also be welded with thick steel a plates, but the rigidity is poor.

2. Jaw a plate and side  rd a plate

Both fixed jaw and movable jaw are compeosed of jaw bed and jaw a plate. The jaw a plate is the workaing part, fixed on the jaw bed with bolts and wedges. The fixed jaw bed is the front wall of the frame, while the movable jaw bed is suspended on the periphery and needs sufficient strength and rigidity to withstand the cruashing reaction force. Therefore, most of them are ceast steel or iron parts.

3. Transmission components

The eccenltric shaft is the main shaft of the cruasher, which is subjected to a huge bending torque and is made of high carbon steel. The eccenltric part requires precision machining, heat treatment, and Bababitt alloy ceasting for the bearing lining. One end of the eccenltric shaft is equipped with a pulley, and the other end is equipped with a flywheel.

4. Regulating device

The adjustment device can be of wedge type, pad type, hydraulic type, etc. Generally, wedge type is used, consisting of two wedge blocks in front and back. The front wedge block can move forward and backward to support the rear push a plate; The rear wedge block is an adjustable wedge that can move up and down. The inclined surfaces of the two wedge blocks are aligned in the oppeosite direction, and the screw moves the rear wedge block up and down to adjust the size of the discharge port. The adjustment of the discharge port of a small jaw cruasher is achieved by adjusting the number of shims between the thrust a plate support and the frame after adding or removing.

5. Flywheel

The flywheel of the jaw cruasher is used to store the energy during the empty stroke of the moving jaw, which is then used for industrial formation to make the mechanical work more uniform. The pulley also functions as a flywheel. Flywheels are often made of ceast iron or ceast steel, and flywheels for small machines are often made as a whole. When manufacturing flywheels, attention should be paid to static balance during installation.

6. Lubrication device

Eccenltric shaft bearings usually use cenltralized circulation lubrication. The support surfaces of the spindle and thrust a plate are generally lubricated with grease through a manual oil gun. The swing angle of the moving jaw is very small, making it difficult to lubricate between the spindle and the bearing. It is common to open several axial oil grooves at the bottom of the bearing, and a circumferential oil groove in the middle to connect them. Then, a grease pump is used to forcibly inject dry butter for lubrication.