CN2078342U

CN2078342U - Forced cooling jacket for diesel pile-driving hammer

Info

Publication number: CN2078342U
Application number: CN 90215299
Authority: CN
Inventors: 卢宝生
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-09-11
Filing date: 1990-09-11
Publication date: 1991-06-05

Abstract

The utility model relates to a reinforced water jacket of a diesel pile hammer for the pile driving of foundation engineering. The outside of the lower cylinder body of the diesel pile hammer is welded with a water jacket shell with a thin shell structure; the lower cylinder body and an annular cavity arranged between the water jacket shell form a cooling water tank; reinforcing elements which are uniformly distributed are arranged between the lower cylinder body and the water jacket shell; both ends of the reinforcing elements are respectively connected with the lower cylinder body and the water jacket shell. The reinforcing elements bear impact force, enhance the rigidity of the water jacket shell so as to prevent the weld seam between the water jacket shell and the lower cylinder body having impacting vibration fatigue cracks, and increase service life. The utility model is suitable for diesel pile hammers with various types.

Description

Forced cooling jacket for diesel pile-driving hammer

The utility model relates to a kind of cooling jacket of diesel pile hammer of Foundation Design piling usefulness.

Diesel pile hammer is a kind of more novel Foundation Design pile driving equipment, because its impact energy is big, high efficiency, use cost is low and advantage such as easy to use, therefore than old-fashioned drop hammer, steam hammer and guide rod hammer have than obvious superiority, obtains extensive use.(KOBE STEEL LTD) all produces this diesel pile hammer with Shanghai Engineering Machinery Plant in Japanese kobe steel institute.The therapeutic method to keep the adverse qi flowing downward cylinder body of this diesel pile hammer is worked under the high temperature of diesel oil detonation, need be cooled off, and therefore in its outside cooling jacket is housed.Existing cooling jacket is at water jacket housing of external welding of lower cylinder, has toroidal cavity between therapeutic method to keep the adverse qi flowing downward cylinder body and the water jacket housing and constitutes cooling water tank.Carry cooling water to reach cooling to cooling water tank to therapeutic method to keep the adverse qi flowing downward cylinder body.The diesel pile hammer of different manufacturers manufacturing in use exposes a common problem, be exactly that the weld seam of its cooling jacket is prone to crackle and leaks, thereby reduce application life, its life-span only accounts for 1/50～1/10 of machine life, be 8～12 years the projected life of general hammer, but the new hammer that has only uses and just leaked in several days, and the measured hammer of matter also only uses about 1 year.Its reason is: during piling, complete machine all is subjected to very big impact force, and the water jacket housing that makes thin shell structures so just causes the attachment weld between water jacket housing and the therapeutic method to keep the adverse qi flowing downward cylinder body to produce the vibrating fatigue crack with respect to very big impact shock is arranged between the therapeutic method to keep the adverse qi flowing downward cylinder body.

The purpose of this utility model is to provide a kind of improved diesel pile hammer cooling jacket, is structurally strengthened, and produces the crack to avoid the attachment weld between water jacket housing and the therapeutic method to keep the adverse qi flowing downward cylinder body, improves its application life.

For achieving the above object, the utility model adopts following technical proposals: this diesel pile hammer cooling jacket includes the therapeutic method to keep the adverse qi flowing downward cylinder body of diesel pile hammer and is enclosed within the external water jacket housing of lower cylinder, has toroidal cavity between therapeutic method to keep the adverse qi flowing downward cylinder body and the water jacket housing and constitutes cooling water tank.Be characterized in: between therapeutic method to keep the adverse qi flowing downward cylinder body and water jacket housing equally distributed reinforcement being housed, fixedlys connected with the water jacket housing with therapeutic method to keep the adverse qi flowing downward cylinder body respectively in the two ends of reinforcement.Like this, the water jacket housing of thin shell structures is connected with therapeutic method to keep the adverse qi flowing downward cylinder body by many reinforcements, thereby strengthened its rigidity widely, bear the impact force that attachment weld bears between former cause lower cylinder body and the water jacket housing by reinforcement, reduce simultaneously the amplitude of the impact shock of water jacket housing greatly, just avoided that the vibrating fatigue crack appears in attachment weld between water jacket housing and the therapeutic method to keep the adverse qi flowing downward cylinder body.

Above-mentioned reinforcement can be a rod member, evenly distributes along the water jacket housing face of cylinder with 100～250 millimeters intervals, radially settles between what therapeutic method to keep the adverse qi flowing downward cylinder body and the water jacket housing, with regard to the reinforcement of sufficient what to water jacket housing rigidity, avoids occurring the vibrating fatigue crack.

Described reinforcement can be a bolt, and its inner spins with screw thread and therapeutic method to keep the adverse qi flowing downward cylinder body, its outer end and the welding of water jacket housing.Reinforcement also can be a round bar, its inner and therapeutic method to keep the adverse qi flowing downward cylinder body welding, and fixedly connected with the water jacket housing with packing ring with Screw in its outer end, perhaps outer end and water jacket housing welding.

Described reinforcement also can be a fin, its inner and therapeutic method to keep the adverse qi flowing downward cylinder body welding, and its outer end is connected with the water jacket housing with packing ring with Screw, perhaps its outer end and water jacket housing welding.

Below in conjunction with accompanying drawing embodiment of the present utility model is made an explanation.

Fig. 1 is the general structure schematic diagram (wherein scheming a is its longitudinal plan, and figure b is its external form figure) of diesel pile hammer.

Fig. 2 is the utility model---the structural representation (wherein scheming c is its longitudinal plan, and figure d is its external form figure) of diesel pile hammer heavier-duty cooling jacket.

Fig. 3 is the sectional drawing at B-B place among Fig. 2.

Fig. 4, Fig. 5, Fig. 6 all are c place partial enlarged drawings among Fig. 3, reflect different reinforcement structure.

Label representative among the figure: 1-guide plate, 2-lead ring, 3-porting, 4-therapeutic method to keep the adverse qi flowing downward cylinder body, 5-cooling water tank, 6-piston ring, the 7-cushion pad, 8-piston lubricating oil chamber, 9-upper cylinder body, the 10-fuel cock, 11-fuel tank, 12-fuel pump cam, the 13-fuel pump, 14-fuel delivery adjusting rod, 15-upper piston, the 16-lower piston, 17-cock of water drain, 18-upper piston dogbolt, the 19-oil filler, the 20-filler, 21-bleeder plug, 22-peep hole plug screw, 23-water jacket housing, the 24-reinforcement, 25-Screw, 26-packing ring.

Fig. 1 illustrates the structure of diesel pile hammer, and this is hammered into shape in each working cycles, finishes the strike of secondary to stake, the impact of 16 pairs of stakes of lower piston when the impact of 16 pairs of stakes of lower piston and fuel oil detonation when promptly upper piston 15 falls.15 guiding function of 9 pairs of upper pistons of upper cylinder body.And therapeutic method to keep the adverse qi flowing downward cylinder body 4 high-temperature region of fuel oil detonation just, so cooling water tank 5 is housed to its cooling, cooling jacket promptly of the present utility model in its outside.

A most preferred embodiment of the present utility model is: referring to Fig. 2, this heavier-duty cooling jacket is the water jacket housing 23 at a thin shell structures of diesel pile hammer therapeutic method to keep the adverse qi flowing downward cylinder body 4 external weldings.There is attachment weld in water jacket housing 23 upper and lower end faces by end face flange and 4 welding of therapeutic method to keep the adverse qi flowing downward cylinder body; Because on the therapeutic method to keep the adverse qi flowing downward cylinder body 4 couplings such as porting 3 and fuel pump 13 are arranged, water jacket housing 23 will be abdicated the position for these couplings simultaneously, so also there is attachment weld around it.At the reinforcement 24 that evenly distributes along water jacket housing 23 faces of cylinder, the interval of reinforcement 24 is about 180 millimeters.

Referring to Fig. 3 and Fig. 4, reinforcement 24 is a bolt, and its inner spins with screw thread and therapeutic method to keep the adverse qi flowing downward cylinder body 4, its outer end and 23 welding of water jacket housing.

Referring to Fig. 5 and Fig. 6, express reinforcement 24 and be the embodiment of round bar, its inner and therapeutic method to keep the adverse qi flowing downward cylinder body 4 welding, fixedly connected (Fig. 5) with water jacket housing 23 with packing ring 26 with Screw 25 in its outer end, perhaps its outer end and 23 welding (Fig. 6) of water jacket housing.

Referring to scheming c among Fig. 2, be welded with reinforcement fin 28 for 27 times in water jacket housing 23 lower end flange, so that water jacket housing 23 is played the support effect, bear the part impact force, further strengthen the rigidity of water jacket housing 2, further reduce the possibility of impact shock fatigue crack.

Claims

1, a kind of heavier-duty cooling jacket of diesel pile hammer of Foundation Design piling usefulness, the therapeutic method to keep the adverse qi flowing downward cylinder body 4 and the water jacket housing 23 that is enclosed within outside the therapeutic method to keep the adverse qi flowing downward cylinder body 4 that comprise diesel pile hammer, have toroidal cavity between therapeutic method to keep the adverse qi flowing downward cylinder body 4 and the water jacket housing 23 and constitute cooling water tank 5, it is characterized in that being equipped with between therapeutic method to keep the adverse qi flowing downward cylinder body 4 and the water jacket housing 23 equally distributed reinforcement 24, fixedlys connected with water jacket housing 23 with therapeutic method to keep the adverse qi flowing downward cylinder body 4 respectively in the two ends of reinforcement 24.

2, heavier-duty cooling jacket according to claim 1 is characterized in that reinforcement 24 is rod member, evenly distributes along water jacket housing 23 faces of cylinder with 100～250 millimeters intervals, radially settles between what therapeutic method to keep the adverse qi flowing downward cylinder body 4 and the water jacket housing 23.

3, heavier-duty cooling jacket according to claim 2 is characterized in that reinforcement 24 is bolt, and its inner spins with screw thread and therapeutic method to keep the adverse qi flowing downward cylinder body 4, its outer end and 23 welding of water jacket housing.

4, heavier-duty cooling jacket according to claim 2 is characterized in that reinforcement 24 is round bar, its inner and therapeutic method to keep the adverse qi flowing downward cylinder body 4 welding, and fixedly connected with water jacket housing 23 with packing ring 26 with Screw 25 in its outer end, perhaps outer end and 23 welding of water jacket housing.

5, heavier-duty cooling jacket according to claim 1 is characterized in that reinforcement 24 is fin, its inner and therapeutic method to keep the adverse qi flowing downward cylinder body 4 welding, and its outer end is connected with water jacket housing 23 with packing ring with Screw, perhaps its outer end and 23 welding of water jacket housing.

6, heavier-duty cooling jacket according to claim 1 is characterized in that being welded with reinforcement fin 28 for 27 times in the lower end flange of water jacket housing 23.