顎式破碎機鄂破破石機粉碎機鄂破機PE250x400

顎式破碎機又作鄂式破碎機，簡稱顎破，主要用于對各種礦石與大塊物料的中等粒度破碎，廣泛運用于礦山、化工、冶煉、建材、公路、鐵路、水利和化工等行業(yè)?？蓪箟簭姸炔淮笥?/span>320MPa的各種礦石、巖石等物料進行粗、中碎作業(yè)，是礦石破碎機、煤矸石破碎機等礦石物料破碎的先選設備。性能特點為破碎比大，產品粒度均勻，結構簡單，性能可以，維修簡便，運營費用低。

顎式破碎機鄂破機粉碎機PE250x400

主要部件

1.機架

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

2.顎板和側護板

定顎和動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。定顎的顎床就是機架前壁，動顎顎床懸掛在周上，要有足夠的強度和剛度，以承受破碎反力，因而大多是鑄鋼或鑄鐵件。

3.傳動件

偏心軸是破碎機的主軸，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.調節(jié)裝置

調節(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，頂住后推板；后楔塊為調節(jié)楔，可上下移動，兩楔塊的斜面倒向貼合，由螺桿使后楔塊上下移動而調節(jié)出料口大小。小型顎式破碎機的出料口調節(jié)是利用增減后推力板支座與機架之間的墊片多少來實現(xiàn)。

5.飛輪

顎式破碎機的飛輪用以存儲動顎空行程時的能量，再用于工業(yè)形成，使機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，小型機的飛輪常制成整體式。飛輪制造，安裝時要注意靜平衡。

6.潤滑裝置

偏心軸軸承通常采用集中循環(huán)潤滑。心軸和推力板的支撐面一般采用潤滑脂通過手動油槍給油。動顎的擺角很小，使心軸與軸瓦之間潤滑困難，常在軸瓦底部開若干軸向油溝，中間開一環(huán)向油槽使之連通，再用油泵強制注入干黃油進行潤滑。

顎式破碎機鄂破機粉碎機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.