CN217419618U - Integrated hydraulic pile hammer core - Google Patents

Abstract

The utility model discloses an integral type hydraulic pressure pile hammer core, including piston rod, counter weight portion and hammering portion, piston rod, hammering portion and counter weight portion are the fashioned coaxial line integral type structure of forging. Hammer set portion establishes in counter weight portion below, and the hammer set portion top is connected with counter weight portion, and the hammer set portion bottom is equipped with the tup that is used for hammering anvil iron. The piston rod is arranged above the counterweight part, the bottom of the piston rod is connected with the counterweight part, and the top of the piston rod is provided with a piston assembly matched with a hydraulic cylinder of the pile driving hammer. The piston assembly comprises a piston ring, a support ring, a positioning ring, a limiting ring and a sealing ring which are coaxially arranged. The utility model discloses a forge fashioned integral type hammer core, cancelled piston rod, counter weight portion and the mutual connection structure of hammering portion, overall structure intensity is high, has shock-resistant and fatigue-resistant special ability, has solved among the prior art split type hammer core and has used the technical problem that the junction of piston rod and counter weight takes place the connection failure easily after a period.

Description

Integrated hydraulic pile hammer core

Technical Field

The utility model belongs to the technical field of hydraulic pressure pile hammer technique and specifically relates to an integral type hydraulic pressure pile hammer core.

Background

In the process of offshore wind power construction, a steel pile of large-scale wind power equipment needs to be beaten into the lower layer of a seabed by using a hammering principle to be firmly fixed, so that a wind power generator set mounted on the steel pile is ensured to be stably mounted.

The hydraulic pile hammer is used for mounting the steel pile of the wind turbine generator, and compared with a transmission pile hammer, the hydraulic pile hammer has the advantages of energy conservation, environmental protection, large striking energy, safety, reliability and the like.

The hammer core is the most central part of the hydraulic pile hammer and is a carrier for realizing striking energy. When the hammer core is lifted under the action of the hydraulic cylinder, the hammer core moves under the action of lower pressure and gravity, and the acting force generated by the movement is the striking force of the hydraulic pile driving hammer. In the process of lifting and generating striking force, the hammer core needs to be continuously stretched and compressed, so that the hammer core needs to continuously bear the tensile and compressive dual acting force in the working process and is influenced by the vibration of the hammer core. The hammer core is constantly influenced by alternating load in the stress process, and the problem of structural damage is easily caused in the weak link of the hammer core.

In the prior art, the hammer core of the large-scale hydraulic pile hammer adopts a split structure so as to control the diameter of a hydraulic cylinder, so that the whole hydraulic system can realize the function of rapidly feeding and discharging oil. Therefore, the hammer core is divided into two independent parts, namely a piston rod and a balance weight, when the hammer core is designed, the requirement that the diameter of the oil cylinder is small can be met, the requirement that the balance weight is large can be met, and the requirement for larger striking energy is met. However, in the practical application process, the vibration caused by the large striking energy is large, so that the problems often occur on the connection structure of the piston rod and the counterweight, and the problem becomes a weak link of the structure. Mainly solves the problem that the hammer cannot be lifted due to the loosening of the connecting bolt, the breakage of the connection and the like. These problems seriously affect the product function and the construction efficiency, and bring great troubles to the construction side.

Disclosure of Invention

The utility model aims at providing an integral type hydraulic pressure pile hammer core can solve among the prior art split type hammer core and use the technical problem that the junction of piston rod and counter weight takes place to connect inefficacy easily after a period.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

An integrated hydraulic pile hammer core comprises a piston rod, a counterweight part and a hammering part, wherein the piston rod, the hammering part and the counterweight part are of an integrated structure with a coaxial line;

the hammering part is arranged below the counterweight part, the top end of the hammering part is connected with the counterweight part, and the bottom end of the hammering part is provided with a hammer head for hammering the anvil iron;

the piston rod is arranged above the counterweight part, the bottom of the piston rod is connected with the counterweight part, and the top of the piston rod is provided with a piston assembly used for being matched with a hydraulic cylinder of the pile driving hammer.

Further, the piston rod, the hammering portion and the counterweight portion are of an integrated structure formed by forging.

Further, the piston assembly comprises a piston ring, a supporting ring, a positioning ring, a limiting ring and a sealing ring which are coaxially arranged.

The piston ring is arranged in a sealing ring piston ring mounting groove on the piston rod.

The support ring is sleeved on the piston rod, is positioned above the piston ring and is tightly attached to the piston ring, and is provided with a sealing ring mounting groove at the inner diameter and the outer diameter of one end in contact with the piston ring, and a sealing ring is arranged in the sealing ring mounting groove.

The positioning ring is sleeved on the piston rod, is positioned above the supporting ring and is tightly attached to the supporting ring, a sealing ring mounting groove is formed in the outer diameter of one end, in contact with the supporting ring, of the positioning ring, a sealing ring is arranged in the sealing ring mounting groove, and a positioning groove is formed in the inner diameter of the upper end of the positioning ring.

The limiting ring is arranged in the limiting ring mounting groove on the piston rod and matched with the positioning groove, and is used for pressing the supporting ring and the positioning ring on the piston ring.

Further, the outer diameters of the piston ring, the support ring and the limit ring are the same.

After the technical scheme is adopted, the utility model discloses following beneficial effect has:

1. the piston rod and the counterweight part of the utility model are of an integrated structure formed by forging, a connecting structure is not needed between the piston rod and the counterweight part, the overall structure has high strength, and the piston rod and the counterweight part have shock resistance and fatigue resistance, and the phenomenon that the hammer cannot be lifted due to the separation of the piston rod and the counterweight part can not occur;

2. the utility model compresses the air at the upper part of the hydraulic cylinder when the piston component moves upwards, thereby playing a role of buffering, reducing the application of a buffering device and lowering the failure rate;

3. the integral structure is simple, the maintenance workload is small, and the construction cost is effectively reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention (excluding the piston assembly).

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is an enlarged schematic view at a in fig. 1.

Fig. 4 is an enlarged schematic view at B in fig. 2.

Description of the drawings: 1. piston rod, 11, piston ring mounting groove, 12, spacing ring mounting groove, 2, counter weight portion, 3, hammering portion, 4, piston assembly, 41, piston ring, 42, support ring, 43, holding ring, 44, spacing ring, 45, sealing ring, 5, pneumatic cylinder, 6, frame.

Detailed Description

In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the following description, in conjunction with the accompanying drawings and embodiments, will make further details on the features and performance of the hammer core of the present invention.

As shown in fig. 1 to 4, an integrated hydraulic pile hammer core includes a piston rod 1, a counterweight portion 2 and a hammering portion 3, and particularly, the piston rod 1, the hammering portion 3 and the counterweight portion 2 are coaxial integrated and are manufactured by an integral forging and integral forming process.

The piston rod 1 is arranged above the counterweight part 2, the bottom of the piston rod 1 is connected with the counterweight part 2, and the top of the piston rod 1 is provided with a piston assembly 4 which is in sealing sliding fit with a hydraulic cylinder 5 of the pile driving hammer.

The piston assembly 4 comprises a piston ring 41, a support ring 42, a positioning ring 43, a limiting ring 44 and a sealing ring 45 which are coaxially arranged, and the outer diameters of the piston ring 41, the support ring 42 and the positioning ring 43 are the same.

Specifically, the piston ring 41 is mounted in the seal ring piston ring mounting groove 11 on the piston rod 1. The support ring 42 is sleeved on the piston rod 1, the support ring 42 is located above the piston ring 41 and tightly attached to the piston ring 41, the support ring 42 is provided with a sealing ring mounting groove at the inner diameter and the outer diameter of one end in contact with the piston ring 41, and a sealing ring 45 is arranged in the sealing ring mounting groove. The positioning ring 43 is sleeved on the piston rod 1, the positioning ring 43 is located above the supporting ring 42 and tightly attached to the supporting ring 42, a sealing ring mounting groove is formed in the outer diameter of one end, in contact with the supporting ring 42, of the positioning ring 43, a sealing ring 45 is arranged in the sealing ring mounting groove, and a positioning groove is formed in the inner diameter of the upper end of the positioning ring 43. The limiting ring 44 is mounted in the limiting ring mounting groove 12 on the piston rod 1 and is matched with the positioning groove for pressing the supporting ring 42 and the positioning ring 43 on the piston ring 41.

Hammer 3 establishes in the below of counter weight portion 2, and the top of hammer 3 is connected with counter weight portion 2, and the bottom of hammer 3 is equipped with the tup that is used for hammering anvil iron.

Further, piston rod 1 and hammering portion 3 are all cylindrical, and piston rod 1 and hammering portion 3 all pass through linear bearing sliding connection with frame 6 of pile hammer, make the hammer core whole can be for frame 6 along the axis direction relative slip to realize carrying the hammer and falling the hammer action.

In particular, the surface roughness of the cylindrical surfaces of the piston rod 1 and the hammer 3 needs to reach the level of ra0.4 or more in finish machining, so as to ensure good fit of the piston rod 1 and the hammer 3 with the linear bearing.

When the pile hammer is used specifically, the pile hammer is fixed at a working place, and an anvil iron is placed between the steel pile and the hammer head.

And starting the hydraulic system, injecting hydraulic oil into a cavity below the piston assembly 4 in the hydraulic cylinder 5, and driving the hammer core to integrally move upwards by the piston assembly 4 under the pressure of the hydraulic oil. During movement, the piston assembly 4 is able to compress air in a cavity of the hydraulic cylinder 5 above the piston assembly 4. Under the action of a hydraulic system, the hammer core is lifted to the highest point, air in a cavity of the hydraulic cylinder 5 above the piston assembly 4 is compressed to the minimum volume, and the hammer lifting is completed.

And releasing the pressure of a hydraulic system, accelerating the hammer core to fall under the combined action of gravity and compressed air until the hammer head impacts the anvil, transmitting the impact force to the steel pile by the anvil, and finishing one-time impact. And repeating the process until the steel pile reaches the preset depth, and finishing the operation.

It should be noted that the above embodiments are only used for illustrating the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention all fall into the protection scope of the present invention.

Claims (4)

1. The utility model provides an integral type hydraulic pressure pile hammer core, includes piston rod (1), counter weight portion (2) and hammering portion (3), its characterized in that: the piston rod (1), the hammering part (3) and the counterweight part (2) are of a coaxial integrated structure;

the hammering part (3) is arranged below the counterweight part (2), the top end of the hammering part (3) is connected with the counterweight part (2), and the bottom end of the hammering part (3) is provided with a hammer head for hammering the anvil iron;

the piston rod (1) is arranged above the counterweight part (2), the bottom of the piston rod (1) is connected with the counterweight part (2), and the top of the piston rod (1) is provided with a piston assembly (4) matched with a hydraulic cylinder (5) of the pile driving hammer.

2. The integrated hydraulic pile hammer core of claim 1, wherein: the piston rod (1), the hammering part (3) and the counterweight part (2) are of an integrated structure formed by forging.

3. The integrated hydraulic pile hammer core of claim 1, wherein: the piston assembly (4) comprises a piston ring (41), a support ring (42), a positioning ring (43), a limiting ring (44) and a sealing ring (45) which are coaxially arranged;

the piston ring (41) is arranged in a sealing ring piston ring mounting groove (11) on the piston rod (1);

the support ring (42) is sleeved on the piston rod (1), the support ring (42) is positioned above the piston ring (41) and is tightly attached to the piston ring (41), the support ring (42) is provided with a sealing ring mounting groove at the inner diameter and the outer diameter of one end contacted with the piston ring (41), and a sealing ring (45) is arranged in the sealing ring mounting groove;

the positioning ring (43) is sleeved on the piston rod (1), the positioning ring (43) is positioned above the supporting ring (42) and is tightly attached to the supporting ring (42), a sealing ring mounting groove is formed in the outer diameter of one end, in contact with the supporting ring (42), of the positioning ring (43), a sealing ring (45) is arranged in the sealing ring mounting groove, and a positioning groove is formed in the inner diameter of the upper end of the positioning ring (43);

the limiting ring (44) is arranged in the limiting ring mounting groove (12) on the piston rod (1) and matched with the positioning groove, and is used for pressing the supporting ring (42) and the positioning ring (43) on the piston ring (41).

4. The integrated hydraulic pile hammer core of claim 3, wherein: the outer diameters of the piston ring (41), the support ring (42) and the limit ring (44) are the same.

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