Offshore pile hammer hydraulic valve with protection mechanism

Abstract

The offshore pile hammer hydraulic valve with the protection mechanism comprises a shell, a valve cavity is formed in the shell, a coil is wound outside an iron core, the two ends of the coil are connected with a power source and a positive and negative switch in series, a magnet is installed in the valve cavity in a sliding mode, and the side, close to the iron core, of the magnet is an S pole. A limiting slot is formed in the interior far away from the iron core shell, one end of the valve rod is fixedly connected with the magnet, and the other end of the valve rod is inserted into the limiting slot; a protection mechanism is also arranged; according to the offshore pile hammer hydraulic valve with the protection mechanism, the flow direction of hydraulic oil can be controlled only by operating the positive and negative switch and a set of electromagnets, extension or contraction of the hydraulic cylinder is controlled, and the structure is simpler and more convenient; the shaking of the valve core during movement is effectively reduced; the shell can be integrally formed and does not need to be divided into an upper half part and a lower half part for assembly, the strength of the shell is greatly improved, the load capacity is improved, the service life is long, and assembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to a hydraulic valve for a marine pile hammer with a protection mechanism. Background Art

[0002] A traditional offshore pile driver consists of a pile hammer, a pile frame, and ancillary equipment. The hammer is attached between two parallel vertical guide rods (commonly known as gantries) at the front of the pile frame and is hoisted by a lifting hook. The pile frame is a steel tower with a winch at the rear for hoisting the pile and hammer. A guide frame consisting of two guide rods at the front of the pile frame controls the direction of pile driving, ensuring the pile is accurately penetrated into the formation according to the designed orientation. The basic technical parameters of a pile driver are the impact weight, impact kinetic energy, and impact frequency.

[0003] The maximum striking energy of traditional offshore pile hammers is only 4000 kilojoules, while today's super-large hydraulic pile hammers have a maximum striking energy of 6000 kilojoules. The hydraulic valve is an important component that controls the up and down movement of the pile hammer.

[0004] However, due to design reasons, the shell of a traditional hydraulic valve is divided into two parts, an upper part and an lower part, which reduces its load. The sealing of the joint also needs to be considered. The two ends of the valve stem are controlled by two sets of solenoid valves, which have certain defects. The internal valve core lacks protection, resulting in a short service life, difficulty in disassembly and assembly, and difficulty in repair or replacement.

[0005] Therefore, it is necessary to design a marine pile hammer hydraulic valve with a protection mechanism. Utility Model Content

[0006] The purpose of the present utility model is to provide a hydraulic valve for a marine pile hammer with a protection mechanism to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a hydraulic valve for a marine pile hammer with a protection mechanism, comprising: a housing, a first pipe, a second pipe, a third pipe, a fourth pipe, and a fifth pipe provided on the housing, a valve chamber provided inside the housing, a valve stem and three valve cores provided inside the valve chamber, an iron core installed on one side of the interior of the valve chamber, a coil wound around the outside of the iron core, two ends of the coil connected in series with a power supply and a forward and reverse switch, a magnet slidably installed inside the valve chamber, the side of the magnet close to the iron core being the S pole, and a limiting slot provided inside the housing away from the iron core, one end of the valve stem being fixedly connected to the magnet, and the other end of the valve stem being inserted into the limiting slot;

[0008] There are also protection agencies.

[0009] By adopting the above technical solution: when in use, the second pipeline is connected to the liquid outlet pipe of the oil tank through the oil pump, the first pipeline and the third pipeline are connected to the oil tank, and the fourth pipeline and the fifth pipeline are connected to the corresponding oil pipelines of the hydraulic cylinder. When the piston rod of the hydraulic cylinder needs to be retracted, the forward and reverse switches are turned on in the forward direction, the iron core generates magnetism, the left end of which is the N pole and the right end is the S pole, which attract the magnet. The magnet drives the valve stem and the valve core to move to the right, so that the hydraulic oil flows in the order of the oil tank, the oil pump, the second pipeline, the fourth pipeline, the hydraulic cylinder, the fifth pipeline, the third pipeline, and the oil tank, so that the piston of the hydraulic cylinder retracts;

[0010] On the contrary, when the forward and reverse switches are reversed, the iron core generates magnetism, with its left end at the S pole and the right end at the N pole, which repel the magnet. The magnet drives the valve stem and valve core to move to the left, causing the hydraulic oil to flow in the following order: oil tank, oil pump, second pipeline, fifth pipeline, hydraulic cylinder, fourth pipeline, first pipeline, oil tank, extending the piston of the hydraulic cylinder.

[0011] The operation is simple. You only need to operate the forward and reverse switch and a set of electromagnets to control the flow direction of the hydraulic oil and the extension or contraction of the hydraulic cylinder. The structure is simpler. The left end of the valve stem moves left and right inside the limit slot to cooperate with the valve stem and the magnet, effectively reducing the shaking of the valve core during movement.

[0012] Preferably, the protection mechanism includes a first rubber sleeve and a second rubber sleeve; an annular plate is integrally formed on the outer wall of the valve core farthest from the iron core, an annular bump is integrally formed on the outer end of the annular plate, and the first rubber sleeve is sleeved on the outside of the annular bump;

[0013] A circular baffle is integrally formed on one end of the iron core close to the magnet, and the second rubber sleeve is sleeved on the outer wall of the circular baffle.

[0014] By adopting the above technical solution: the buffering effect of the first rubber sleeve improves the protection of the valve core on the far left, and the effect of the second rubber sleeve improves the protection between the magnet and the iron core, thereby increasing the service life.

[0015] Preferably, the protection mechanism also includes a plug-in column, which is integrally formed at the outer end of the iron core, and is inserted into the interior of the valve cavity. A threaded column is integrally formed at the outer end of the plug-in column, and a threaded hole is provided on the shell to be screwed together with the threaded column.

[0016] By adopting the above technical solutions:

[0017] The iron core, valve stem, valve core and magnet can be easily disassembled and assembled by disassembling the threaded column.

[0018] Preferably, a first sealing ring and a second sealing ring are integrally formed on the inner wall of the threaded column from the inside to the outside, and a sealing ring is provided on each of the first sealing ring and the second sealing ring.

[0019] By adopting the above technical solution, the sealing between the threaded column and the housing is improved through the action of the two sealing rings.

[0020] Preferably, two rectangular grooves are formed on the outer wall of the threaded column.

[0021] By adopting the above technical solution: inserting the two ends of the C-shaped tool into the two rectangular grooves, and twisting the C-shaped tool, the threaded column can be easily disassembled and assembled.

[0022] Preferably, a thread groove is provided inside the magnet, a thread is provided on the outer end of the valve stem, and the valve stem is screwed into the thread groove.

[0023] By adopting the above technical solution, the disassembly and assembly between the valve stem and the magnet can be facilitated by twisting the valve stem.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] Simply operating a forward / reverse switch and a set of electromagnets can control the flow direction of the hydraulic oil and the extension or contraction of the hydraulic cylinder, resulting in a simpler structure and effectively reducing the shaking of the valve core during movement. The housing can be integrally formed and does not need to be assembled into two halves, which greatly improves the strength of the housing, increases the load capacity, prolongs the service life, and facilitates assembly.

[0026] The flow direction of the hydraulic oil and the extension or contraction of the hydraulic cylinder can be controlled by simply operating the forward and reverse switch and a set of electromagnets, which makes the structure simpler. The left end of the valve stem moves left and right inside the limit slot, cooperating with the valve stem and magnet to effectively reduce the shaking of the valve core during movement.

[0027] The first rubber sleeve provides a buffering effect, thereby improving the protection of the valve core on the far left. The second rubber sleeve also provides improved protection between the magnet and the iron core, thereby increasing the service life.

[0028] The inner wall of the threaded column is integrally formed with a first sealing ring and a second sealing ring from the inside to the outside, and the first sealing ring and the second sealing ring are both provided with a sealing ring. The two sealing rings improve the sealing between the threaded column and the housing.

[0029] The shell can be formed in one piece and does not need to be assembled into two parts, which greatly improves the strength of the shell and increases the load capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a diagram of a usage state of the offshore pile hammer hydraulic valve with a protection mechanism of the utility model;

[0031] Figure 2This is a schematic diagram of the use principle of the offshore pile hammer hydraulic valve with a protection mechanism of the utility model;

[0032] Figure 3 for Figure 1 A magnified view of part A in FIG;

[0033] Figure 4 for Figure 1 An enlarged view of part B;

[0034] Figure 5 This is another usage state diagram of the offshore pile hammer hydraulic valve with a protection mechanism of the utility model;

[0035] Figure 6 This is another schematic diagram of the use principle of the offshore pile hammer hydraulic valve with a protection mechanism of the utility model.

[0036] In the figure: 100, housing; 101, valve chamber; 102, limiting slot; 110, first pipe; 111, second pipe; 112, third pipe; 113, fourth pipe; 114, fifth pipe; 120, valve stem; 121, valve core; 1211, annular plate; 1212, annular protrusion; 1213, first rubber sleeve; 130, magnet; 200, iron core; 210, coil; 211, circular baffle; 212, second rubber sleeve; 220, plug-in column; 230, threaded column; 231, first sealing ring; 232, second sealing ring; 233, sealing ring; 234, rectangular groove. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See Figures 1-4A hydraulic valve for an offshore pile driver hammer with a protection mechanism includes: a shell 100, on which a first pipe 110, a second pipe 111, a third pipe 112, a fourth pipe 113, and a fifth pipe 114 are provided. A valve chamber 101 is provided inside the shell 100, and a valve stem 120 and three valve cores 121 are provided inside the valve chamber 101. An iron core 200 is installed on one side of the interior of the valve chamber 101, and a coil 210 is wound around the outside of the iron core 200. Both ends of the coil 210 are connected in series with a power supply and a forward and reverse switch. A magnet 130 is slidably installed inside the valve chamber 101, and the side of the magnet 130 close to the iron core 200 is an S pole, and the side away from the iron core 200. A limited slot 102 is provided inside the shell 100, one end of the valve stem 120 is fixedly connected to the magnet 130, and the other end of the valve stem 120 is inserted into the interior of the limited slot 102; a protection mechanism is also provided.

[0039] See Figure 1 and Figure 2 When in use, the second pipe 111 is connected to the liquid outlet pipe of the oil tank through the oil pump, the first pipe 110 and the third pipe 112 are connected to the oil tank, and the fourth pipe 113 and the fifth pipe 114 are connected to the corresponding oil pipes of the hydraulic cylinder. When the piston rod of the hydraulic cylinder needs to be retracted, the forward and reverse switches are turned on in the forward direction, and the iron core 200 generates magnetism, with its left end as the N pole and the right end as the S pole, which attract the magnet 130. The magnet 130 drives the valve stem 120 and the valve core 121 to move rightward, so that the hydraulic oil flows in the order of the oil tank, the oil pump, the second pipe 111, the fourth pipe 113, the hydraulic cylinder, the fifth pipe 114, the third pipe 112, and the oil tank, causing the piston of the hydraulic cylinder to retract;

[0040] See Figure 5 and Figure 6 On the contrary, when the forward and reverse switches are reversely turned on, the iron core 200 generates magnetism, with its left end being the S pole and the right end being the N pole, which repel the magnet 130. The magnet 130 drives the valve stem 120 and the valve core 121 to move leftward, causing the hydraulic oil to flow in the following order: oil tank, oil pump, second pipe 111, fifth pipe 114, hydraulic cylinder, fourth pipe 113, first pipe 110, oil tank, extending the piston of the hydraulic cylinder.

[0041] The operation is simple. You only need to operate the forward and reverse switches and a set of electromagnets to control the flow direction of the hydraulic oil and the extension or contraction of the hydraulic cylinder. The structure is simpler. The left end of the valve stem 120 moves left and right inside the limit slot 102 to cooperate with the valve stem 120 and the magnet 130, effectively reducing the shaking of the valve core 121 during movement.

[0042] The protection mechanism includes a first rubber sleeve 1213 and a second rubber sleeve 212; an annular plate 1211 is integrally formed on the outer wall of the valve core 121 farthest from the iron core 200, and an annular protrusion 1212 is integrally formed on the outer end of the annular plate 1211. The first rubber sleeve 1213 is sleeved on the outside of the annular protrusion 1212;

[0043] A circular baffle 211 is integrally formed on one end of the iron core 200 close to the magnet 130 , and the second rubber sleeve 212 is sleeved on the outer wall of the circular baffle 211 .

[0044] The buffering effect of the first rubber sleeve 1213 improves the protection of the leftmost valve core 121, and the protection between the magnet 130 and the iron core 200 is improved by the effect of the second rubber sleeve 212, thereby increasing the service life.

[0045] The protection mechanism also includes a plug-in post 220, which is integrally formed at the outer end of the iron core 200 and inserted into the interior of the valve cavity 101. A threaded post 230 is integrally formed at the outer end of the plug-in post 220, and the housing 100 is provided with a threaded hole that is threadedly engaged with the threaded post 230. The threaded post 230 is removed and installed to facilitate the removal and installation of the iron core 200, valve stem 120, valve core 121, and magnet 130.

[0046] The inner wall of the threaded column 230 is integrally formed with a first sealing ring 231 and a second sealing ring 232 from the inside to the outside. The first sealing ring 231 and the second sealing ring 232 are both provided with a sealing ring 233. The two sealing rings 233 improve the sealing between the threaded column 230 and the housing 100.

[0047] The outer wall of the threaded column 230 is provided with two rectangular grooves 234. Insert the two ends of the U-shaped tool into the two rectangular grooves 234, and twist the U-shaped tool to facilitate the disassembly and assembly of the threaded column 230.

[0048] The magnet 130 has a thread groove formed inside, and the outer end of the valve stem 120 has a thread formed thereon, and the valve stem 120 is screwed into the thread groove. The valve stem 120 and the magnet 130 can be easily disassembled and assembled by twisting the valve stem 120.

[0049] Assembly principle: Assemble the first rubber sleeve 1213, the second rubber sleeve 212, and the sealing ring 233;

[0050] Insert the valve stem 120, valve core 121, magnet 130 and iron core 200 into the valve cavity 101, and then tighten the threaded column 230 to complete the assembly.

[0051] When disassembling, just follow the above steps in reverse, and assembly is quick and easy.

[0052] In summary:

[0053] Only by operating the forward and reverse switches and a set of electromagnets can the flow direction of the hydraulic oil and the extension or contraction of the hydraulic cylinder be controlled, and the structure is simpler; the shaking of the valve core 121 during movement is effectively reduced; the housing 100 can be formed in one piece and does not need to be divided into upper and lower halves for assembly, which greatly improves the strength of the housing 100, improves the load capacity, has a long service life, and is easy to assemble.

[0054] The flow direction of the hydraulic oil and the extension or contraction of the hydraulic cylinder can be controlled by simply operating the forward and reverse switches and a set of electromagnets, which makes the structure simpler. The left end of the valve stem 120 moves left and right inside the limit slot 102, cooperating with the valve stem 120 and the magnet 130, effectively reducing the shaking of the valve core 121 during movement.

[0055] The buffering effect of the first rubber sleeve 1213 improves the protection of the valve core 121 on the far left, and the protection between the magnet 130 and the iron core 200 is improved by the second rubber sleeve 212, thereby increasing the service life.

[0056] The inner wall of the threaded column 230 is integrally formed with a first sealing ring 231 and a second sealing ring 232 from the inside to the outside. The first sealing ring 231 and the second sealing ring 232 are both provided with a sealing ring 233. The two sealing rings 233 improve the sealing between the threaded column 230 and the housing 100.

[0057] The housing 100 can be integrally formed and does not need to be assembled into two halves, which greatly improves the strength of the housing 100 and increases the load capacity.

[0058] Any portion not described in the present invention is the same as the prior art or can be implemented using the prior art. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic valve for a marine pile hammer with a protection mechanism, comprising: A housing (100) is provided with a first pipe (110), a second pipe (111), a third pipe (112), a fourth pipe (113), and a fifth pipe (114); a valve chamber (101) is provided inside the housing (100); a valve stem (120) and three valve cores (121) are provided inside the valve chamber (101); and an iron core (200) is installed on one side of the interior of the valve chamber (101), and the outer surface of the iron core (200) is wound around the inner surface of the iron core (200). A coil (210) is provided, and both ends of the coil (210) are connected in series with a power supply and a forward and reverse switch. A magnet (130) is slidably mounted inside the valve chamber (101). The side of the magnet (130) close to the iron core (200) is an S pole, and a limiting slot (102) is provided inside the housing (100) away from the iron core (200). One end of the valve stem (120) is fixedly connected to the magnet (130), and the other end of the valve stem (120) is inserted into the limiting slot (102). There are also protection agencies.

2. A hydraulic valve for a marine pile hammer with a protection mechanism according to claim 1, characterized in that: The protection mechanism comprises a first rubber sleeve (1213) and a second rubber sleeve (212); an annular plate (1211) is integrally formed on the outer wall of the valve core (121) farthest from the iron core (200); an annular convex block (1212) is integrally formed on the outer end of the annular plate (1211); and the first rubber sleeve (1213) is sleeved on the outside of the annular convex block (1212); A circular baffle (211) is integrally formed at one end of the iron core (200) close to the magnet (130), and the second rubber sleeve (212) is sleeved on the outer wall of the circular baffle (211).

3. A hydraulic valve for a marine pile hammer with a protection mechanism according to claim 2, characterized in that: The protection mechanism further comprises a plug-in column (220), wherein the plug-in column (220) is integrally formed at the outer end of the iron core (200), and the plug-in column (220) is inserted into the interior of the valve cavity (101). A threaded column (230) is integrally formed at the outer end of the plug-in column (220), and a threaded hole is provided on the housing (100) for threaded connection with the threaded column (230).

4. A hydraulic valve for a marine pile hammer with a protection mechanism according to claim 3, characterized in that: A first sealing ring (231) and a second sealing ring (232) are integrally formed on the inner wall of the threaded column (230) from the inside to the outside, and a sealing ring (233) is provided on both the first sealing ring (231) and the second sealing ring (232).

5. The offshore pile hammer hydraulic valve with a protection mechanism according to claim 3, characterized in that: Two rectangular grooves (234) are formed on the outer wall of the threaded column (230).

6. The offshore pile hammer hydraulic valve with a protection mechanism according to claim 1, characterized in that: A thread groove is provided inside the magnet (130), a thread is provided on the outer end of the valve stem (120), and the valve stem (120) is screwed into the thread groove.

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