An underwater electric breaking hammer

Abstract

The application discloses an underwater electric breaking hammer and relates to the technical field of breaking hammers, which comprises a shell, a linear output mechanism arranged in the shell, a piston rod inserted into the shell, an output end of the linear output mechanism coaxially connected with the piston rod, and a hammer head arranged at one end of the piston rod; the linear output mechanism is used for driving the hammer head to reciprocate along the axial direction of the piston rod; the underwater electric breaking hammer further comprises an isolation mechanism; the isolation mechanism is used for protecting the piston rod so as to reduce the radial impact on the piston rod. The isolation mechanism is arranged to protect the part of the piston rod extending out of the shell, so as to reduce the radial impact of water flow on the piston rod, prevent eccentric load from occurring when the piston rod moves, and reduce abrasion; meanwhile, the isolation mechanism can isolate and protect the position between the shell and the piston rod from the outside, prevent sewage from entering the shell when the abrasion gap between the shell and the piston rod is enlarged, and prevent the normal operation of the linear output mechanism from being affected.

Description

Technical Field

[0001] This invention relates to the field of hydraulic breaker technology, and specifically to an underwater electric hydraulic breaker. Background Technology

[0002] An electric hydraulic breaker is a tool driven by electricity, mainly used for breaking hard materials such as concrete and rocks. Compared with hydraulic breakers, it has the advantages of small size, light weight, and no complicated start-up steps.

[0003] In existing technologies, electric hydraulic breakers typically generate power through an internal motor, which drives a piston or hammering mechanism to reciprocate at high speed, thereby transferring energy to the drill bit or breaker head to strike the target object.

[0004] However, the aforementioned electric hydraulic breaker still has the following drawbacks during use:

[0005] When an electric hydraulic breaker operates underwater, the water flow exerts a radial thrust on the breaker head. Under high-speed movement of the breaker head, this causes an eccentric load on the piston rod, which in turn leads to abnormal wear between the piston cylinder and the piston rod. The worn area is easily affected by the wastewater formed by the mixture of dust and water generated during the crushing process. The wastewater may seep into the motor through the worn area, shortening the service life of the internal metal parts. In addition, the vibration of the motor during operation can also cause the wastewater to impact the electrical components, damaging the insulation materials and increasing the risk of short circuits. Summary of the Invention

[0006] In order to overcome the above-mentioned technical problems, the present invention aims to provide an underwater electric hydraulic breaker to solve the problem mentioned in the background art that when existing electric hydraulic breakers are used underwater, the water flow will generate radial thrust on the breaker head, causing abnormal wear between the piston cylinder and the piston rod, which affects the use.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] An underwater electric hydraulic breaker includes a housing; a linear output mechanism is disposed within the housing, and a piston rod is inserted into the housing. The output end of the linear output mechanism is coaxially connected to the piston rod, and a hammer head is disposed at one end of the piston rod. The linear output mechanism is used to drive the hammer head to reciprocate along the axial direction of the piston rod. The underwater electric hydraulic breaker also includes an isolation mechanism; the isolation mechanism is used to protect the piston rod to reduce radial impact on the piston rod. The isolation mechanism includes:

[0009] A corrugated telescopic sleeve is fitted onto the piston rod near the hammer head, and one end of the corrugated telescopic sleeve is connected to the housing.

[0010] A first guide mechanism is disposed inside the corrugated expansion sleeve. One end of the first guide mechanism is connected to the housing, and the other end of the first guide mechanism is connected to the corrugated expansion sleeve. The first guide mechanism is used to allow the corrugated expansion sleeve to extend and retract along its axial direction.

[0011] The device includes a diaphragm, one end of which is disposed on a corrugated telescopic sleeve, and the other end of which is disposed on a piston rod. The piston rod, diaphragm, corrugated telescopic sleeve, and housing form a first chamber to isolate a portion of the piston rod from the outside. The first chamber is connected to the interior of the housing through a gap between the housing and the piston rod, so that the pressure inside the first chamber remains relatively stable when the space of the first chamber changes. When the underwater electric breaker is in use, the piston rod, diaphragm, corrugated telescopic sleeve, and the area to be breakered form a second chamber to isolate a portion of the piston rod from the outside.

[0012] Preferably, a retaining ring is provided between the piston rod and the diaphragm; the retaining ring is detachably provided on the piston rod.

[0013] Preferably, the first guiding mechanism includes a telescopic rod and a spring sleeved on the telescopic rod; one end of the telescopic rod is connected to the housing, and the other end of the telescopic rod is connected to the end of the corrugated telescopic sleeve away from the housing; when the axial pressure on the telescopic rod is removed, the spring is used to drive the telescopic rod to extend and return to its original position.

[0014] Preferably, the linear output mechanism includes a first mounting plate, a mover assembly, and a stator assembly; the first mounting plate is disposed within the housing, the mover assembly is inserted into the first mounting plate, and the mover assembly is slidable along its axial direction; one end of the first mounting plate is coaxially connected to the piston rod; the stator assembly is disposed on the first mounting plate, and the stator assembly is coaxially sleeved on the mover assembly; when the stator assembly is powered on, it can drive the mover assembly to reciprocate along its axial direction.

[0015] Preferably, the mover assembly includes a connecting sleeve and a linear magnetic pole array; the connecting sleeve is inserted into a first mounting plate, and the linear magnetic pole array is composed of multiple N poles, S poles, N poles and S poles stacked sequentially along the axis of the connecting sleeve, and the linear magnetic pole array is coaxially inserted into the connecting sleeve;

[0016] One end of the connecting sleeve is provided with a plug, which is used to position multiple magnetic poles inside the connecting sleeve.

[0017] Preferably, the underwater electric breaker further includes a cooling mechanism for reducing the operating temperature of the linear output mechanism; the cooling mechanism includes a second mounting plate and a circulation pipe; the second mounting plate is disposed inside the housing, and the circulation pipe is disposed on the second mounting plate; the middle portion of the circulation pipe is arranged in multiple S-shaped segments around the outside of the stator assembly; a sealing ring is provided between the piston rod in the first chamber and the housing, the sealing ring allowing the piston rod to move axially, and the sealing ring is used to make the first chamber a closed cavity; one end of the circulation pipe is inserted into the closed cavity, and the other end of the circulation pipe communicates with the outside of the housing; when the underwater electric breaker is working underwater, both the circulation pipe and the sealed cavity are filled with water.

[0018] Preferably, the cooling mechanism further includes a buffer mechanism, which includes an elastic water bladder and a baffle; the elastic water bladder is disposed in the housing and coaxially sleeved on the piston rod, the baffle is fixed to the piston rod, and the baffle and the elastic water bladder coincide in axial projection along the piston rod; one end of the circulation pipe is inserted into the closed cavity, and the other end of the circulation pipe communicates with the interior of the elastic water bladder;

[0019] The elastic water bladder is covered with an isolation sleeve, which is positioned between the shell and the corrugated telescopic sleeve.

[0020] Preferably, the linear output mechanism further includes an adjustment mechanism for adjusting the axial distance between the stator assembly and the mover assembly. The adjustment mechanism includes a cover plate, a mounting sleeve, and a rotating block. The mounting sleeve is fitted onto the stator assembly, and the cover plate is located at the top of the mounting sleeve and connected to a first mounting plate. The bottom end of the mounting sleeve is spirally connected to a rotating block, which is coaxially rotatably connected to the stator assembly. There is a certain gap between the top of the stator assembly and the cover plate. When the rotating block is rotated upwards, the stator assembly can be moved axially.

[0021] Preferably, a second guide mechanism is provided between the stator assembly and the mounting sleeve, the second guide mechanism being used to provide guidance for the movement of the stator assembly.

[0022] Preferably, the second guide mechanism includes a connecting disc and a slider; the connecting disc is disposed between the stator assembly and the rotating block, and the connecting disc and the rotating block are coaxially rotatably connected; the slider is disposed on the periphery of the connecting disc; a sliding groove is provided in the mounting sleeve; the sliding groove is parallel to the axial direction of the stator assembly; and the slider is slidably connected to the sliding groove.

[0023] The beneficial effects of this invention are:

[0024] 1. By setting up an isolation mechanism, the part of the piston rod that extends out of the housing is protected to reduce the radial impact of water flow on the piston rod, prevent eccentric load during piston rod movement, and reduce wear; at the same time, the isolation mechanism can isolate the position between the housing and the piston rod from the outside world, preventing sewage from entering the housing when the wear gap between the housing and the piston rod increases, thus preventing it from affecting the normal operation of the linear output mechanism.

[0025] 2. By setting up a cooling mechanism, the cooling area is increased by arranging the circulation pipe around the stator assembly outwards, which is conducive to cooling. In addition, during the operation of the breaker, the water in the circulation pipe can be driven to circulate back and forth, ensuring the cooling effect of the water in the circulation pipe on the stator assembly.

[0026] 3. By setting a linear output mechanism, when the stator assembly is powered on, it can drive the mover assembly to reciprocate along its axis, replacing the existing hydraulic drive method. Since there is no need for oil circuit structure, valves and other structures, the overall size of the underwater electric breaker can be greatly reduced, greatly reducing the space occupied and making it suitable for use in relatively confined underwater environments. Attached Figure Description

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0029] Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the enlarged front view section of the present invention;

[0031] Figure 4 This is a partially cross-sectional, enlarged three-dimensional structural diagram of the isolation mechanism of the present invention;

[0032] Figure 5 This is a partially cross-sectional, three-dimensional enlarged structural diagram of the isolation mechanism of the present invention;

[0033] Figure 6 This is a three-dimensional enlarged structural diagram of the circulation tube of the present invention;

[0034] Figure 7 This is a partially cross-sectional, enlarged three-dimensional structural diagram of the adjustment mechanism of the present invention;

[0035] Figure 8 This is a partially cross-sectional, three-dimensional enlarged structural diagram of the mover assembly of the present invention.

[0036] In the diagram: 1. Housing; 2. Linear output mechanism; 21. First mounting plate; 22. Mover assembly; 221. Connecting sleeve; 222. Linear magnetic pole array; 223. Plug; 23. Stator assembly; 24. Adjustment mechanism; 241. Cover plate; 242. Mounting sleeve; 243. Rotating block; 244. Second guide mechanism; 2441. Connecting disc; 2442. Slider; 2443. Slide groove; 3. Piston rod; 4. Hammer head; 5. Isolation mechanism; 51. Corrugated telescopic sleeve; 52. First guide mechanism; 521. Telescopic rod; 522. Spring; 53. Fixing ring; 54. Diaphragm; 6. Cooling mechanism; 61. Second mounting plate; 62. Circulation pipe; 63. Buffer mechanism; 631. Isolation sleeve; 632. Elastic water bladder; 633. Baffle. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1-8 As shown, an underwater electric hydraulic breaker, such as Figure 1-2 As shown, the device includes a housing 1; a linear output mechanism 2 is disposed inside the housing 1, and a piston rod 3 is inserted into the housing 1. The output end of the linear output mechanism 2 is coaxially connected to the piston rod 3, and a hammer head 4 is disposed at one end of the piston rod 3; the hammer head 4 and a portion of the piston rod 3 near the hammer head 4 extend out of the housing 1; the linear output mechanism 2 is used to drive the hammer head 4 to reciprocate along the axial direction of the piston rod 3; the underwater electric breaker also includes an isolation mechanism 5; the isolation mechanism 5 is used to protect the piston rod 3 to reduce radial impact on the piston rod 3.

[0039] It should be noted that the hammer 4 on the piston rod 3 is driven to reciprocate by the linear output mechanism 2 to break underwater objects. During the operation of the underwater electric breaker, the part of the piston rod 3 that extends out of the housing 1 is protected by the isolation mechanism 5 to reduce the radial impact of water flow on the piston rod 3, prevent eccentric load during piston rod 3 movement, and reduce wear. At the same time, the isolation mechanism 5 can isolate and protect the position between the housing 1 and the piston rod 3 from the outside world, preventing sewage from entering the housing 1 when the wear gap between the housing 1 and the piston rod 3 increases, thus preventing it from affecting the normal operation of the linear output mechanism 2 and improving the service life of the components inside the linear output mechanism 2.

[0040] like Figure 1-2 and Figure 4As shown, the isolation mechanism 5 includes: a corrugated telescopic sleeve 51, which is sleeved on the piston rod 3 near the hammer head 4, with one end of the corrugated telescopic sleeve 51 connected to the housing 1; a first guide mechanism 52, which is disposed inside the corrugated telescopic sleeve 51, with one end of the first guide mechanism 52 connected to the housing 1 and the other end of the first guide mechanism 52 connected to the corrugated telescopic sleeve 51; the first guide mechanism 52 is used to allow the corrugated telescopic sleeve 51 to extend and retract along its axial direction; and a diaphragm 54, with one end of the diaphragm 54 disposed on the corrugated telescopic sleeve. 51. The other end of the diaphragm 54 is disposed on the piston rod 3; the piston rod 3, the diaphragm 54, the corrugated telescopic sleeve 51 and the housing 1 form a first chamber to isolate part of the piston rod 3 from the outside; the first chamber is connected to the inside of the housing 1 through the gap between the housing 1 and the piston rod 3 so that the pressure inside the first chamber remains relatively stable when the space of the first chamber changes; when the underwater electric breaker is used, the piston rod 3, the diaphragm 54, the corrugated telescopic sleeve 51 and the area to be broken form a second chamber to isolate part of the piston rod 3 from the outside.

[0041] It should be noted that when the underwater electric breaker is working, the hammer head 4 first comes into contact with the area to be broken, and at the same time, the corrugated telescopic sleeve 51 comes into contact with the area to be broken under the push of the first guide mechanism 52. As the linear output mechanism 2 drives the piston rod 3 and the hammer head 4 to move, the hammer head 4 impacts and breaks the area to be broken, and the corrugated telescopic sleeve 51 protects the piston rod 3, reduces the radial impact of the water flow on the piston rod 3, prevents eccentric load when the piston rod 3 moves, and reduces wear.

[0042] When the piston rod 3 and hammer 4 move downward, that is, when crushing downward, they will push the second chamber downward to compress, generating a thrust from the second chamber outward. This makes it easier to push the sewage and debris near the hammer 4 away, thus making it easier to observe the crushing situation, reducing the impact of debris and gravel on the crushing operation, and improving crushing efficiency.

[0043] When the piston rod 3 and hammer 4 move upward under the reverse force of the crushing area, that is, when they move away from the crushing area, the upward movement of the piston rod 3 and hammer 4 will cause the diaphragm 54 to move, which in turn will cause the corrugated telescopic sleeve 51 to compress. At this time, the space of the first chamber becomes smaller. Since the interior of the first chamber can only be connected to the interior of the housing 1 through the narrow gap between the piston rod 3 and the housing 1, when the piston rod 3 and hammer 4 are subjected to a large reaction force, the corrugated telescopic sleeve 51 will suddenly compress, forming a buffer structure to prevent the piston rod 3 and hammer 4 from moving upward too quickly, preventing damage due to excessive force, and improving the service life of the underwater electric breaker.

[0044] like Figure 4As shown, a retaining ring 53 is provided between the piston rod 3 and the diaphragm 54; the retaining ring 53 is detachably provided on the piston rod 3; it should be noted that by adjusting the position of the retaining ring 53 in the axial direction of the piston rod 3, the degree to which the corrugated telescopic sleeve 51 covers the piston rod 3 can be adjusted, that is, the telescopic length of the corrugated telescopic sleeve 51 can be adjusted, so as to facilitate the use of the piston rod 3 with different crushing strokes and prevent excessive contact between the diaphragm 54 and the crushed stone, which would cause wear.

[0045] like Figure 2 and Figure 4 As shown, it is understood that this application does not limit the specific structure and installation method of the first guide mechanism 52. The following only provides a feasible specific technical solution: The first guide mechanism 52 includes a telescopic rod 521 and a spring 522 sleeved on the telescopic rod 521; one end of the telescopic rod 521 is connected to the housing 1, and the other end of the telescopic rod 521 is connected to the end of the corrugated telescopic sleeve 51 away from the housing 1; when the axial pressure on the telescopic rod 521 is removed, the spring 522 is used to drive the telescopic rod 521 to extend and return to its original position.

[0046] It should be noted that by setting the telescopic rod 521, the corrugated telescopic sleeve 51 can only extend and retract along its axial direction, which can block the radial force on the piston rod 3, prevent the piston rod 3 from deviating, and reduce wear. By using the spring 522 in conjunction with the telescopic rod 521, the corrugated telescopic sleeve 51 is always subjected to its axial thrust, so that the corrugated telescopic sleeve 51 always tends to be elongated, which facilitates the real-time protection of the piston rod 3 when the piston rod 3 reciprocates.

[0047] like Figure 1-3 As shown, the linear output mechanism 2 includes a first mounting plate 21, a mover assembly 22, and a stator assembly 23. The first mounting plate 21 is disposed inside the housing 1, and the mover assembly 22 is inserted into the first mounting plate 21 and can slide along its axial direction. One end of the first mounting plate 21 is coaxially connected to the piston rod 3. The stator assembly 23 is disposed on the first mounting plate 21 and is coaxially sleeved on the mover assembly 22. When the stator assembly 23 is powered on, it can drive the mover assembly 22 to reciprocate along its axial direction.

[0048] It should be noted that when the stator assembly 23 is powered on, it can drive the mover assembly 22 to reciprocate along its axis. By controlling the power of the stator assembly 23, the reciprocating speed of the mover assembly 22 can be precisely controlled, replacing the existing hydraulic drive method. Since there is no need for oil circuit structure, valves and other structures, the overall size of the underwater electric breaker can be greatly reduced, which is beneficial for underwater work.

[0049] like Figure 2-3 and Figure 8As shown, the mover assembly 22 includes a connecting sleeve 221 and a linear magnetic pole array 222; the connecting sleeve 221 is inserted into the first mounting plate 21, and the linear magnetic pole array 222 is composed of multiple N poles, S poles, N poles and S poles stacked sequentially along the axial direction of the connecting sleeve 221. The linear magnetic pole array 222 is coaxially inserted into the connecting sleeve 221; a plug 223 is provided at one end of the connecting sleeve 221, and the plug 223 is used to position the multiple magnetic poles inside the connecting sleeve 221.

[0050] It should be noted that a linear magnetic pole array 222 structure is formed by stacking multiple N poles, S poles, N poles and S poles in sequence. This structure works in conjunction with the stator assembly 23 to drive the linear magnetic pole array 222 to reciprocate along its axis. This, in turn, drives the piston rod 3 to reciprocate, forming a hydraulic breaker structure. This replaces the electric structure formed by the existing gear and other transmission structures, resulting in high output efficiency and significantly reduced space occupation, making it suitable for use in relatively confined underwater environments.

[0051] like Figure 2-6 As shown, the underwater electric breaker also includes a cooling mechanism 6, which is used to reduce the operating temperature of the linear output mechanism 2. The cooling mechanism 6 includes a second mounting plate 61 and a circulation pipe 62. The second mounting plate 61 is disposed inside the housing 1, and the circulation pipe 62 is disposed on the second mounting plate 61. The middle part of the circulation pipe 62 is arranged in multiple S-shaped segments around the outside of the stator assembly 23. A sealing ring is provided between the piston rod 3 in the first chamber and the housing 1. The sealing ring allows the piston rod 3 to move along its axial direction and is used to make the first chamber a closed cavity. One end of the circulation pipe 62 is inserted into the closed cavity, and the other end of the circulation pipe 62 is connected to the outside of the housing 1. When the underwater electric breaker is working underwater, the circulation pipe 62 and the sealed cavity are filled with water.

[0052] It should be noted that by arranging the circulation pipe 62 around the stator assembly 23 outwards, the cooling area is increased, which is beneficial for cooling. During the operation of the breaker, as the piston rod 3 moves upward, it drives the corrugated expansion sleeve 51 to compress, squeezing the water in the closed cavity, causing the water to flow into the circulation pipe 62 to cool the stator assembly 23, and then exiting from the other end of the circulation pipe 62. Since the breaker operates underwater, when the piston rod 3 moves downward, it drives the corrugated expansion sleeve 51 to extend and return to its original position. At this time, the pressure in the closed cavity decreases, generating a negative pressure, which guides the water from the outside back into the closed cavity through the circulation pipe 62. During this process, cooler water is introduced from the outside and passes through the stator assembly 23, achieving cooling of the stator assembly 23. That is, during one reciprocating operation of the piston rod 3, the water in the circulation pipe 62 can be circulated repeatedly, ensuring the cooling effect of the water in the circulation pipe 62 on the stator assembly 23.

[0053] like Figure 2-6 and Figure 8As shown, the cooling mechanism 6 also includes a buffer mechanism 63, which includes an elastic water bladder 632 and a baffle 633. The elastic water bladder 632 is disposed on the housing 1 and coaxially sleeved on the piston rod 3. The baffle 633 is fixed to the piston rod 3. The projection of the baffle 633 and the elastic water bladder 632 along the axial direction of the piston rod 3 coincides, that is, when the piston rod 3 is viewed along the axial direction of the piston rod 3, the baffle 633 and the elastic water bladder 632 are partially or completely blocked. One end of the circulation pipe 62 is inserted into the closed cavity, and the other end of the circulation pipe 62 communicates with the interior of the elastic water bladder 632. An isolation sleeve 631 is provided on the outer sleeve of the elastic water bladder 632. The isolation sleeve 631 is disposed between the housing 1 and the corrugated telescopic sleeve 51.

[0054] It should be noted that, due to the complex crushing environment, the crushing operation can easily cause the water to become turbid, which is not conducive to circulation and cooling. In order to prevent debris and gravel from entering the circulation pipe 62 and affecting its cooling operation, one end of the circulation pipe 62 is inserted into the sealed cavity, and the other end of the circulation pipe 62 is inserted into the elastic water bladder 632. That is, the sealed cavity, the circulation pipe 62 and the elastic water bladder 632 form a sealed structure that is completely isolated from the outside world. At this time, coolant can be filled into the sealed cavity, the circulation pipe 62 and the elastic water bladder 632.

[0055] When the piston rod 3 moves upward, it compresses the corrugated expansion sleeve 51, causing the coolant in the closed cavity to flow into the circulation pipe 62, thus cooling the stator assembly 23. The coolant that absorbs heat in the circulation pipe 62 is introduced into the elastic water bladder 632, causing the elastic water bladder 632 to expand. When the piston rod 3 moves downward, it extends the corrugated expansion sleeve 51, and the coolant in the elastic water bladder 632 is guided back into the closed cavity after passing through the circulation pipe 62. Thus, with the reciprocating motion of the piston rod 3, the coolant circulates back and forth, cooling the stator assembly 23. Furthermore, when the coolant is in the closed cavity, there is only one layer of corrugated expansion sleeve 51 between the coolant and the external water flow, meaning that the coolant at a higher temperature can exchange heat with the external water flow. This ensures the cooling effect during the reciprocating circulation process and guarantees a continuous cooling effect.

[0056] When the piston rod 3 is subjected to a large reverse force and moves upward rapidly, the movement of the piston rod 3 will cause the elastic water bladder 632 to expand. Therefore, when the piston rod 3 moves and causes the baffle 633 to move upward, the baffle 633 will squeeze the expanded elastic water bladder 632, preventing the piston rod 3 from moving too far upward and colliding with the internal structure of the housing 1, which has a good buffering effect. Moreover, by squeezing the elastic water bladder 632, the coolant in the elastic water bladder 632 can be pushed to flow back quickly, thereby increasing the flow speed, improving the reciprocating circulation effect, and thus improving the cooling effect on the stator assembly 23.

[0057] like Figure 1-3 and Figure 7As shown, the linear output mechanism 2 also includes an adjustment mechanism 24, which is used to adjust the axial distance between the stator assembly 23 and the mover assembly 22. The adjustment mechanism 24 includes a cover plate 241, a mounting sleeve 242, and a rotating block 243. The mounting sleeve 242 is fitted onto the stator assembly 23, and the cover plate 241 is located at the top of the mounting sleeve 242 and is connected to the first mounting plate 21. The bottom end of the mounting sleeve 242 is spirally connected to the rotating block 243, which is coaxially rotatably connected to the bottom of the stator assembly 23. There is a certain gap between the top of the stator assembly 23 and the cover plate 241. When the rotating block 243 is rotated upward, the stator assembly 23 can be moved along its axial direction.

[0058] It should be noted that the reciprocating stroke of the piston rod 3 can be adjusted by adjusting the mechanism 24 to adapt to different crushing operations. Specifically, by driving the rotating block 243 to rotate, the rotating block 243 moves along the axial direction of the mounting sleeve 242, thereby pushing the stator assembly 23 to move. This achieves the purpose of adjusting the axial distance between the stator assembly 23 and the mover assembly 22, thereby controlling the reciprocating stroke of the mover assembly 22, and thus controlling the reciprocating stroke of the piston rod 3. Furthermore, the rotating block 243 is threadedly connected to the mounting sleeve 242, giving the rotating block 243 an axial self-locking characteristic, which facilitates maintaining the stator assembly 23 in the corresponding position and improves the stability of the stator assembly 23 after position adjustment.

[0059] like Figure 3 and Figure 7 As shown, a second guide mechanism 244 is provided between the stator assembly 23 and the mounting sleeve 242. The second guide mechanism 244 is used to provide guidance for the movement of the stator assembly 23. It is understood that this application does not limit the specific structure and installation method of the second guide mechanism 244. The following only provides a feasible specific technical solution. The second guide mechanism 244 includes a connecting disk 2441 and a slider 2442. The connecting disk 2441 is disposed between the stator assembly 23 and the rotating block 243, and the connecting disk 2441 and the rotating block 243 are coaxially rotatably connected. The slider 2442 is disposed on the periphery of the connecting disk 2441. A sliding groove 2443 is provided in the mounting sleeve 242. The sliding groove 2443 is parallel to the axial direction of the stator assembly 23, and the slider 2442 is slidably connected to the sliding groove 2443.

[0060] It should be noted that, since the coil windings inside the stator assembly 23 need to be electrically connected to the outside, in order to reduce the pulling between the coil windings and the external wires caused by the rotational force on the stator assembly 23 when it is driven to move, a second guide mechanism 244 is provided. Specifically, when the rotating block 243 rotates and rises, the stator assembly 23 can only rise and fall along the slide groove 2443 through the cooperation of the slider 2442 and the slide groove 2443, and will not rotate. This reduces the pulling on the external wires and improves the ease of use.

[0061] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0062] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0063] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An underwater electric hydraulic breaker, comprising a housing (1); characterized in that, A linear output mechanism (2) is provided inside the housing (1), and a piston rod (3) with a hammer head (4) is inserted into the housing (1). The output end of the linear output mechanism (2) is coaxially connected to the piston rod (3). The linear output mechanism (2) is used to drive the piston rod (3) to reciprocate along its axial direction. The underwater electric breaker also includes an isolation mechanism (5). The isolation mechanism (5) is used to protect the piston rod (3) to reduce radial impact on the piston rod (3), prevent eccentric load during piston rod (3) movement, and reduce wear. The isolation mechanism (5) includes: A corrugated telescopic sleeve (51) is fitted onto the piston rod (3) near the hammer head (4), and one end of the corrugated telescopic sleeve (51) is connected to the housing (1). A first guide mechanism (52) is disposed within a corrugated telescopic sleeve (51). One end of the first guide mechanism (52) is connected to the housing (1), and the other end is connected to the corrugated telescopic sleeve (51). The first guide mechanism (52) allows the corrugated telescopic sleeve (51) to extend and retract along its axial direction. The first guide mechanism (52) includes a telescopic rod (521) and a spring (522) sleeved on the telescopic rod (521). One end of the telescopic rod (521) is connected to the housing (1), and the other end of the telescopic rod (521) is connected to the end of the corrugated telescopic sleeve (51) away from the housing (1). When the axial pressure on the telescopic rod (521) is removed, the spring (522) is used to drive the telescopic rod (521) to extend and return to its original position. By setting the telescopic rod (521), the corrugated telescopic sleeve (51) can only extend and retract along its axial direction, which can block the radial force on the piston rod (3), prevent the piston rod (3) from deviating, and reduce wear. The diaphragm (54) has one end attached to the corrugated telescopic sleeve (51) and the other end attached to the piston rod (3). A retaining ring (53) is provided between the piston rod (3) and the diaphragm (54). The retaining ring (53) is detachably attached to the piston rod (3). The piston rod (3), diaphragm (54), corrugated telescopic sleeve (51), and housing (1) form a first chamber to isolate part of the piston rod (3) from the outside. The first chamber is connected to the housing (1) by means of the diaphragm (54), corrugated telescopic sleeve (51), and housing (1). The gap between the piston rods (3) is connected to the inside of the shell (1) so that the pressure inside the first chamber is relatively stable when the space of the first chamber changes. The piston rods (3), diaphragm (54), corrugated telescopic sleeve (51) and the area to be crushed form the second chamber to isolate part of the piston rods (3) from the outside. When the piston rods (3) and hammers (4) move downward, that is, when crushing downward, they will push the second chamber downward to compress, generating a thrust from the second chamber outward, which makes it easier to push the sewage and debris near the hammers (4) away.

2. The underwater electric hydraulic breaker according to claim 1, characterized in that, The linear output mechanism (2) includes a first mounting plate (21), a mover assembly (22), and a stator assembly (23). The first mounting plate (21) is disposed inside the housing (1), and the mover assembly (22) is inserted into the first mounting plate (21). The mover assembly (22) can slide along its axial direction. One end of the first mounting plate (21) is coaxially connected to the piston rod (3). The stator assembly (23) is disposed on the first mounting plate (21), and the stator assembly (23) is coaxially sleeved on the mover assembly (22). When the stator assembly (23) is powered on, it can drive the mover assembly (22) to reciprocate along its axial direction.

3. The underwater electric hydraulic breaker according to claim 2, characterized in that, The mover assembly (22) includes a connecting sleeve (221) and a linear magnetic pole array (222); the connecting sleeve (221) is inserted into the first mounting plate (21), and the linear magnetic pole array (222) is composed of multiple N poles, S poles, N poles and S poles stacked sequentially along the axial direction of the connecting sleeve (221), and the linear magnetic pole array (222) is coaxially inserted into the connecting sleeve (221). One end of the connecting sleeve (221) is provided with a plug (223), which is used to position multiple magnetic poles inside the connecting sleeve (221).

4. The underwater electric hydraulic breaker according to claim 2, characterized in that, The underwater electric breaker also includes a cooling mechanism (6), which is used to reduce the working temperature of the linear output mechanism (2); the cooling mechanism (6) includes a second mounting plate (61) and a circulation pipe (62); the second mounting plate (61) is disposed inside the housing (1), and the circulation pipe (62) is disposed on the second mounting plate (61); the middle part of the circulation pipe (62) is arranged in multiple S-shaped segments around the outside of the stator assembly (23); a sealing ring is provided between the piston rod (3) in the first chamber and the housing (1), the sealing ring allows the piston rod (3) to move along its axial direction, and the sealing ring is used to make the first chamber form a closed cavity; one end of the circulation pipe (62) is inserted into the closed cavity, and the other end of the circulation pipe (62) is connected to the outside of the housing (1); when the underwater electric breaker is working underwater, the circulation pipe (62) and the sealed cavity are filled with water.

5. The underwater electric hydraulic breaker according to claim 4, characterized in that, The cooling mechanism (6) further includes a buffer mechanism (63), which includes an elastic water bladder (632) and a baffle (633). The elastic water bladder (632) is disposed on the housing (1) and is coaxially sleeved on the piston rod (3). The baffle (633) is fixed on the piston rod (3). The baffle (633) and the elastic water bladder (632) are projected to coincide along the axial direction of the piston rod (3). One end of the circulation pipe (62) is inserted into the closed cavity, and the other end of the circulation pipe (62) is connected to the interior of the elastic water bladder (632). The elastic water bladder (632) is covered with an isolation sleeve (631), which is disposed between the shell (1) and the corrugated telescopic sleeve (51).

6. The underwater electric hydraulic breaker according to claim 2, characterized in that, The linear output mechanism (2) further includes an adjustment mechanism (24), which is used to adjust the axial distance between the stator assembly (23) and the mover assembly (22). The adjustment mechanism (24) includes a cover plate (241), a mounting sleeve (242), and a rotating block (243). The mounting sleeve (242) is fitted onto the stator assembly (23), and the cover plate (241) is located at the top of the mounting sleeve (242). The cover plate (241) is connected to the first mounting plate (21). The bottom end of the mounting sleeve (242) is spirally connected to the rotating block (243). The rotating block (243) is coaxially rotatably connected to the bottom of the stator assembly (23). There is a certain gap between the top of the stator assembly (23) and the cover plate (241). When the rotating block (243) is rotated upward, the stator assembly (23) can be moved along its axial direction.

7. The underwater electric hydraulic breaker according to claim 6, characterized in that, A second guide mechanism (244) is provided between the stator assembly (23) and the mounting sleeve (242), the second guide mechanism (244) being used to provide guidance for the stator assembly (23) when it moves.

8. The underwater electric hydraulic breaker according to claim 7, characterized in that, The second guide mechanism (244) includes a connecting disc (2441) and a slider (2442); the connecting disc (2441) is disposed between the stator assembly (23) and the rotating block (243), and the connecting disc (2441) and the rotating block (243) are coaxially rotatably connected; the slider (2442) is disposed on the periphery of the connecting disc (2441); a sliding groove (2443) is provided in the mounting sleeve (242); the sliding groove (2443) is parallel to the axial direction of the stator assembly (23); and the slider (2442) is slidably connected to the sliding groove (2443).

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