1, hydraulic hammer's definition hydraulic hammer has become an important working tool for hydraulic excavators, and some people install hydraulic hammer on excavators, loaders (also known as two busy) or wheel loaders for crushing operations. Hydraulic hammer, also known as hydraulic crusher, is commonly used in Japanese and Korean. Also known as hydraulic hammer. Some domestic manufacturers and users call it hydraulic hammer, while others call it hydraulic pick, hydraulic spear head, oil hammer and so on. Although the names are varied, they all refer to the same machine. This machine is driven by hydrostatic pressure, which drives the piston to reciprocate. When the piston strokes, it hits the drill pipe at high speed, and the drill pipe breaks solids such as ore and concrete. In this paper, this machine is called hydraulic hammer for short. Now the market in hydraulic hammer is very prosperous, and many models of hydraulic hammer from Korean, Japanese, German, American, Finnish, Italian and other countries are flooding our market. There are also some domestic manufacturers offering some models of hydraulic hammer products. The model of hydraulic hammer is an important information that sellers and users are very concerned about, but what information can the model tell us?
2. hydraulic hammer's model and the meaning of numbers in it. The model of hydraulic hammer is generally composed of letters and numbers. What is the meaning of the model, especially the meaning of the numbers in the model? Let me explain the meaning of hydraulic hammer models and numbers of some companies.
2. 1 model indicates the weight of the applicable excavator. Some companies' hydraulic hammer models indicate the weight class of the applicable excavators. For example, GB in GB 170 model is the abbreviation of Korean engineering company, and the number 170 indicates that this model is suitable for excavators with a weight of about 17 t in hydraulic hammer, and KB in hydraulic hammer model KB 1500 indicates the hammer of Korean Magong Company. SG 1200 represents hydraulic hammer of Guang Lin Machinery Company, and the applicable excavator weights are about 12 t respectively. F22 is the Furukawa Company F of Japan.
Series hydraulic hammer, the suitable weight of excavators is about 22 T respectively. 2.2 The number in the model indicates the hydraulic hammer model SB50 suitable for excavator bucket capacity, SB indicates hydraulic hammer of Korean Shuishan Company, and the number 50 indicates that the excavator bucket capacity is 0.45 ~
0.6 m3, which is about 0.5 m3, and so on. 2.3 The numbers in the model indicate that the drill pipe diameter in hydraulic hammer is the most commonly used general model in China, the numbers in the general model indicate the drill pipe diameter range in hydraulic hammer, the model HCB 1400 is hydraulic hammer, and the HCB in HCB 1550 indicates the hammer of Hanchang Heavy Industry. 1400 indicates that the drill pipe diameters in hydraulic hammer are 140mm and 155, such as H 120 and H 130, and the actual drill pipe diameters are 1 15mm and/respectively. Hydraulic hammer drill pipe is a tool for directly crushing rocks or concrete in hydraulic hammer, and there is no uniform term. Some are called drill pipes, others are called pickaxes. 3. The choice of hydraulic hammer Understanding the meaning of numbers in hydraulic hammer models is very helpful for excavator users to choose and match hydraulic hammer. 3. 1 Choose hydraulic hammer directly according to the model 3. 1. 1 Choose hydraulic hammer according to the weight of the excavator. If the number in the hydraulic hammer model indicates the applicable excavator weight (total weight), you can directly select the hydraulic hammer model according to the excavator weight. 3. 1.2 Match the hydraulic hammer according to the bucket capacity of the excavator [1] If the figures in the hydraulic hammer model indicate the bucket capacity of the applicable excavator, you can directly match the hydraulic hammer model according to the bucket capacity of the excavator. The first part of the lower cylinder assembly
The lower cylinder assembly includes the following accessories: lower cylinder, inner sleeve, outer sleeve, flat pin, fixed pin, inner sleeve pin, outer sleeve pin, exhaust screw, nozzle, circlip and Pisa. Align the inner and outer sleeves first, then press them into the lower cylinder with a press, and lock the inner and outer sleeves with the inner sleeve pin and the outer sleeve pin. Then lock it with pisser and circlip. Install the grease fitting and air outlet screw. After installation, apply appropriate butter to the impact chamber. Assembly is complete. The second part of the cylinder assembly mainly includes the following accessories: cylinder, cylinder regulator, socket plug, wire thread insert, oil seal, piston, oil seal seat, etc. Cylinder is the core component of crusher, which is particularly important in assembly. The assembly is as follows: 1 Level the cylinder, and install the wire thread insert in the threaded hole of the cylinder with a special tool, with the wire thread insert end face lower than the threaded end face. 2. Clean the cylinder block. When cleaning the cylinder block, pay attention to the cleaning of the inner cavity and oil passage hole in the cylinder block, and blow dry with high-pressure air after cleaning. Check the cleanliness of the oil passage hole with a flashlight. 3. Install the oil seal. The lower end of the cylinder body is provided with three oil seals in parallel, namely a dustproof oil seal, a main oil seal and a buffer oil seal from outside to inside. Before installing the oil seal, apply hydraulic oil to the oil seal, and the direction cannot be reversed during installation. Buffer oil seal consists of oil seal and support ring, and the chamfered edge of support ring is attached to the oil seal, which cannot be reversed. 4. Install the O-ring on the socket plug and install it on the cylinder block. Tighten the socket plug to prevent oil leakage. 5. Hoist the cylinder block onto the lower cylinder block, install the oil inlet and oil outlet connectors, apply screw glue, and install the socket plugs on the side and back.
6. Install the cylinder regulator. There is an O-ring and a support ring on the cylinder regulator. Cut the supporting ring into an inclined plane with a blade, put it on the back of the O-ring, coat it with grease, install it on the side, tighten it, then remove it, check whether the oil seal is damaged or not, check whether the contact indentation is uniform, then tighten it, spray hydraulic oil on the cylinder cavity, and wait for the piston to be installed. 7. Install the soft bushing. There are five oil seals on the soft bushing. They have the same diameter and different cross-sectional diameters. Pay attention to your choice. Lubricate the O-ring and soft bushing, install them on the cylinder block, and then wait for the cylinder block to be installed. 8. Install the piston: after the piston is cleaned, blow it dry with compressed air, spray hydraulic oil evenly on the surface, and slowly put the piston into the cylinder body, so as not to touch the inner cavity of the cylinder body. After installation, the piston should reciprocate two or three times to prevent the oil seal from being squeezed during installation. 9. For the installation of the piston ring (piston retaining ring), the inner ring of the piston ring of the external valve is air seal and bidirectional seal from top to bottom. The outer ring is two O-rings with supporting rings. Note that the oil seal on the piston ring should be coated with hydraulic oil first, and the end face of the special seal with pressure relief groove should face the direction of pressure oil. When installing, the special seal should not be folded too much to prevent deformation recovery. The oil seal at the upper end of the outer ring has two support rings, and the lower end has only one support ring. Pay attention to the installation position of the support ring. The inner end of the built-in valve is air seal, two-way stern seal and Yi Dao wear ring from top to bottom. Pay attention to the side of the wear ring with oil drain groove, which faces away from the direction of pressure oil. The outer ring and the upper and lower end faces are respectively provided with O-rings. Put the piston ring on the piston and tap the end face of the piston ring to make it enter. Be careful not to damage the oil seal during installation. Install the built-in piston: put the O-ring at the lower end, then install the piston, knock the piston in place, and then put the O-ring at the upper end of the piston in place. After installation, inject an appropriate amount of hydraulic oil into the piston end face, install the locating pin, and wait for the installation of the nitrogen chamber.
Part III Assembly of Main Valve The external main valve includes the following parts: valve seat, valve core, valve sleeve, valve cover, hexagonal plug, socket plug and valve regulator. Clean the above accessories and blow dry them with high pressure air. Spray the valve sleeve, valve seat and valve core with hydraulic oil and assemble them together. Install the bonnet oil seal and install it on the valve seat. Be careful not to damage the oil seal during installation. Coat the bonnet bolts with engine oil and tighten them with a torque wrench. Add sealing rings to the socket plug and hexagonal plug, and then glue them to lock them. 5. After assembly, put your finger into the fluctuating valve sleeve in the valve seat to check whether the valve sleeve moves smoothly. 6. Lubricate the O-ring and support ring on the plane of the valve seat. 7. Install the main valve on the cylinder block and fix the valve seat bolt with glue. 8. Installation of valve regulator. The valve regulator is used to adjust the frequency of the crusher. After sealing the oil, screw it to the empty bottom of the regulator, then screw it back for 2.5 turns and lock it with nuts, which is the standard frequency of the crusher. Built-in valve includes valve core, valve cover and valve sleeve, which are assembled together after cleaning, drying and spraying hydraulic oil. 10. flatten both ends of the valve with the palm of your hand, slowly tilt it for 2-3 times, and observe whether the valve core is unblocked in the valve sleeve. 1 1. Apply grease to the end faces of the valve cover and O-ring, and then install. Flat end the main valve with both hands, put the main valve into the main valve hole, and press the valve cover by hand.
The frequency regulator of the built-in valve is installed on the cylinder body, and the installation and adjustment methods are the same as those of the external valve. The fourth part of the accumulator assembly includes the following parts: accumulator body, accumulator cover, vibrating plate, accumulator body and accumulator charging valve. 1. Clean and blow dry the main components of the accumulator. 2. After installing the main parts of the accumulator on the main body, apply bolt glue to lock it. 3. Apply grease to the annular groove of the accumulator, install the vibrating plate and the accumulator cover, apply screw glue to the bolts and tighten them. 4. Lubricate the oil seal of the accumulator body and install it. Install the assembly on the cylinder block and lock it with a bolted torque wrench. Install the inflation valve and inflate it to the standard (60kg). The fifth part is the assembly of the upper cylinder block assembly. The back shell of the external valve includes the following accessories: back shell, flange seat, calibration line and nitrogen injection valve. 1. Clean and dry the parts. 2. The nitrogen injection valve is stuck and locked. 3. Lubricate the oil seal of the flange seat, and then install it on the rear shell. Install the flange seat to avoid damaging the oil seal, and lock the bolts with glue. Glue this pair of wires to the flange. 4. Lubricate the O-ring of the upper cylinder block and install it. The upper cylinder of the external valve should be soft-lined.