Underwater electric breaking hammer

Abstract

The invention discloses an underwater electric breaking hammer, and relates to the technical field of breaking hammers. A linear output mechanism is arranged in the shell, a piston rod is inserted into the shell, the output end of the linear output mechanism is coaxially connected with the piston rod, and a hammer head is arranged at one end of the piston rod; the linear output mechanism is used for driving the hammer head to reciprocate in 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 to reduce radial impact on the piston rod. By arranging the isolation mechanism, the part, extending out of the shell, of the piston rod is protected through the isolation mechanism, so that radial impact of water flow on the piston rod is reduced, eccentric load is prevented during movement of the piston rod, and abrasion is reduced; and meanwhile, the isolation mechanism can isolate and protect the position between the shell and the piston rod from the outside, so that the situation that when a wear gap between the shell and the piston rod is increased, sewage enters the shell, and influence on normal work of the linear output mechanism is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of breaker hammers, and in particular to an underwater electric breaker hammer. Background Art

[0002] An electric breaker is a tool that is driven by electricity and is mainly used to break hard materials such as concrete and rock. Compared with a hydraulic breaker, it has the advantages of being small in size, light in weight, and not requiring complicated starting procedures.

[0003] In the prior art, an electric breaker hammer usually generates power through an internal motor to drive a piston or a hammer mechanism to reciprocate at high speed, thereby transferring energy to a drill bit or a breaker hammer head to strike a target object.

[0004] However, the above electric breaker still has the following defects during use:

[0005] When an electric breaker works underwater, the water flow will exert radial thrust on the breaker hammer head; when the hammer head moves at high speed, this will cause eccentric load on the piston rod, which will cause abnormal wear between the piston cylinder and the piston rod; the wear area is easily further affected by the sewage formed by the mixture of dust generated during the crushing process and the water flow. The sewage may penetrate into the motor through the wear area and shorten the service life of the internal metal parts; in addition, the vibration during the operation of the motor will also cause the sewage to impact the electrical components, damage the insulating materials and increase the risk of short circuit. Summary of the invention

[0006] In order to overcome the above technical problems, the purpose of the present invention is to provide an underwater electric breaker to solve the problem that when the existing electric breaker is used underwater, the water flow will produce radial thrust on the breaker head, causing abnormal wear between the piston cylinder and the piston rod, thereby affecting the use.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] An underwater electric breaker hammer comprises a housing; a linear output mechanism is arranged in the housing, a piston rod is plugged into the housing, an output end of the linear output mechanism is coaxially connected to the piston rod, and a hammer head is arranged 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 breaker hammer also comprises an isolation mechanism; the isolation mechanism is used to protect the piston rod to reduce radial impact on the piston rod; the isolation mechanism comprises:

[0009] A bellows expansion sleeve, wherein the bellows expansion sleeve is arranged on the piston rod close to the hammer head, and one end of the bellows expansion sleeve is connected to the housing;

[0010] A first guide mechanism, wherein the first guide mechanism is disposed in the bellows telescopic 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 bellows telescopic sleeve; the first guide mechanism is used to allow the bellows telescopic sleeve to telescope along its axial direction;

[0011] and a diaphragm, one end of the diaphragm is arranged on the bellows expansion sleeve, and the other end of the diaphragm is arranged on the piston rod; the piston rod, diaphragm, bellows expansion sleeve and shell form a first chamber to isolate part of the piston rod from the outside world; the first chamber is connected with the inside of the shell through the gap between the shell and the piston rod, so that when the space of the first chamber changes, the pressure in the first chamber is guaranteed to be relatively stable; when the underwater electric breaker is in use, the piston rod, diaphragm, bellows expansion sleeve and the area to be broken form a second chamber to isolate part of the piston rod from the outside world.

[0012] Preferably, a fixing ring is provided between the piston rod and the diaphragm; the fixing 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 shell, and the other end of the telescopic rod is connected to the end of the corrugated telescopic sleeve away from the shell; when the axial pressure on the telescopic rod is removed, the spring is used to drive the telescopic rod to extend and reset.

[0014] Preferably, the linear output mechanism includes a first mounting plate, a mover assembly and a stator assembly; the first mounting plate is arranged in the shell, the mover assembly is plugged into the first mounting plate, and the mover assembly can slide along its axial direction; one end of the first mounting plate is coaxially connected to the piston rod; the stator assembly is arranged on the first mounting plate, and the stator assembly is coaxially sleeved on the mover assembly; when the stator assembly is powered on, the mover assembly can be driven to reciprocate along its axial direction.

[0015] Preferably, the mover assembly comprises a connecting sleeve and a linear magnetic pole array; the connecting sleeve is plugged into the first mounting plate, the linear magnetic pole array is composed of a plurality of N poles, S poles, N poles and S poles sequentially superimposed along the axial direction of the connecting sleeve, and the linear magnetic pole array is coaxially plugged into the connecting sleeve;

[0016] A plug is provided at one end of the connecting sleeve, and the plug is used to position a plurality of magnetic poles in the connecting sleeve.

[0017] Preferably, the underwater electric breaker also includes a cooling mechanism, which is used to reduce the working temperature of the linear output mechanism; the cooling mechanism includes a second mounting plate and a circulation pipe; the second mounting plate is arranged in the shell, and the circulation pipe is arranged on the second mounting plate; the middle part of the circulation pipe is a multi-segment S-shaped combination surrounding the outside of the stator assembly; a sealing ring is arranged between the piston rod in the first chamber and the shell, the sealing ring allows the piston rod 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 is inserted into the closed cavity, and the other end of the circulation pipe is connected to the outside of the shell; when the underwater electric breaker works underwater, the circulation pipe and the sealing cavity are filled with water.

[0018] Preferably, the cooling mechanism further includes a buffer mechanism, which includes an elastic water bag and a baffle; the elastic water bag is arranged on the housing, and the elastic water bag is coaxially sleeved on the piston rod, the baffle is fixed to the piston rod, and the baffle and the elastic water bag overlap along the axial projection of the piston rod; one end of the circulation tube is plugged into the closed cavity, and the other end of the circulation tube is connected to the inside of the elastic water bag;

[0019] The elastic water bag outer shell is provided with an isolation sleeve, and the isolation sleeve is arranged between the shell and the corrugated telescopic sleeve.

[0020] Preferably, the linear output mechanism also includes an adjustment mechanism, which is used to adjust 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 arranged on the stator assembly, the cover plate is arranged on the top of the mounting sleeve, and the cover plate is connected to the first mounting plate; the bottom end of the mounting sleeve is spirally connected with a rotating block, and the rotating block is coaxially connected to the stator assembly, and there is a certain distance between the top of the stator assembly and the cover plate, and when the knob is turned upward to rotate the block, the stator assembly can be driven to move along its axial direction.

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

[0022] Preferably, the second guide mechanism includes a connecting disc and a slider; the connecting disc is arranged between the stator assembly and the rotating block, and the connecting disc is coaxially rotatably connected to the rotating block, the slider is arranged on the circumferential side of the connecting disc, a slide groove is opened in the mounting sleeve, the slide groove is parallel to the axial direction of the stator assembly, and the slider is slidably connected to the slide groove.

[0023] Beneficial effects of the present invention:

[0024] 1. By setting up an isolation mechanism, that is, by using the isolation mechanism to protect the part of the piston rod extending out of the housing, the radial impact of water flow on the piston rod can be reduced, eccentric load can be prevented when the piston rod moves, and wear can be reduced; at the same time, the isolation mechanism can isolate and protect the position between the housing and the piston rod from the outside world, so as to prevent sewage from entering the housing when the wear gap between the housing and the piston rod increases, and prevent the normal operation of the linear output mechanism from being affected;

[0025] 2. By setting a cooling mechanism and arranging a circulation pipe around the outer side of the stator assembly, the cooling area is increased, which is beneficial to cooling; and 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 up a linear output mechanism, when the stator assembly is powered on, the mover assembly can be driven to reciprocate along its axial direction, replacing the existing hydraulic drive method. Since there is no need for oil circuit structures, valves and other structures, the overall volume of the underwater electric breaker can be greatly reduced, which greatly reduces the space occupation and is conducive to use in relatively small underwater environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

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

[0029] Figure 2 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the main cutaway enlarged structure of the present invention;

[0031] Figure 4 It is a partially cutaway three-dimensional enlarged structural schematic diagram of the isolation mechanism of the present invention;

[0032] Figure 5 It is a partially cutaway three-dimensional enlarged structural schematic diagram of a part of the structure of the isolation mechanism of the present invention;

[0033] Figure 6 This is a schematic diagram of a three-dimensional enlarged structure of a circulation pipe of the present invention;

[0034] Figure 7 It is a partially cutaway three-dimensional enlarged structural schematic diagram of the regulating mechanism of the present invention;

[0035] Figure 8 It is a partially cutaway, three-dimensional, enlarged structural schematic diagram of the mover assembly of the present invention.

[0036] In the figure: 1. shell; 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 bag; 633. baffle. 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0038] like Figure 1-8 As shown, an underwater electric breaker hammer, such as Figure 1-2 As shown, it includes a shell 1; a linear output mechanism 2 is arranged in the shell 1, a piston rod 3 is inserted on the shell 1, the output end of the linear output mechanism 2 is coaxially connected with the piston rod 3, and a hammer 4 is arranged at one end of the piston rod 3; the hammer 4 and a part of the piston rod 3 near the hammer 4 are extended out of the shell 1; the linear output mechanism 2 is used to drive the hammer 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 the radial impact on the piston rod 3.

[0039] It should be noted that the hammer head 4 on the piston rod 3 is driven to reciprocate by the linear output mechanism 2 to achieve the crushing of underwater objects. During the operation of the underwater electric breaker, the portion of the piston rod 3 extending out of the shell 1 is protected by the isolation mechanism 5 to reduce the radial impact of the water flow on the piston rod 3, prevent eccentric loads from occurring when the piston rod 3 moves, and reduce wear; at the same time, the isolation mechanism 5 can isolate and protect the position between the shell 1 and the piston rod 3 from the outside world, prevent sewage from entering the shell 1 when the wear gap between the shell 1 and the piston rod 3 increases, prevent the normal operation of the linear output mechanism 2 from being affected, and improve the service life of the components in the linear output mechanism 2.

[0040] like Figure 1-2 and Figure 4As shown, the isolation mechanism 5 includes: a bellows expansion sleeve 51, which is sleeved on the piston rod 3 near the hammer head 4, and one end of the bellows expansion sleeve 51 is connected to the housing 1; a first guide mechanism 52, which is arranged in the bellows expansion sleeve 51, one end of the first guide mechanism 52 is connected to the housing 1, and the other end of the first guide mechanism 52 is connected to the bellows expansion sleeve 51; the first guide mechanism 52 is used to allow the bellows expansion sleeve 51 to expand and contract along its axial direction; and a diaphragm 54, one end of the diaphragm 54 is arranged on the bellows expansion sleeve 51, the other end of the diaphragm 54 is arranged on the piston rod 3; the piston rod 3, the diaphragm 54, the bellows 51 and the shell 1 surround a first chamber to isolate part of the piston rod 3 from the outside; the first chamber is connected with the inside of the shell 1 through the gap between the shell 1 and the piston rod 3, so that when the space of the first chamber changes, the pressure in the first chamber is relatively stable; when the underwater electric breaker is in use, the piston rod 3, the diaphragm 54, the bellows 51 and the area to be broken surround 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 hammer is working, the hammer head 4 is firstly brought into contact with the area to be broken, and at the same time, the bellows telescopic sleeve 51 is brought 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 area to be broken is impacted and broken by the hammer head 4, and the piston rod 3 is protected by the bellows telescopic sleeve 51, so as to reduce the radial impact of the water flow on the piston rod 3, prevent the eccentric load from occurring when the piston rod 3 moves, and reduce wear;

[0042] When the piston rod 3 and the hammer head 4 move downward, that is, when crushing downward, the second chamber will be pushed downward to compress, generating a thrust from the second chamber outward, which is convenient for pushing away the sewage and debris near the hammer head 4, thereby facilitating the observation of the crushing situation, reducing the influence of debris and gravel on the crushing work, and improving the crushing efficiency;

[0043] When the piston rod 3 and the hammer head 4 are subjected to the reverse force from the crushing area and move upward, that is, when they are away from the area to be crushed, the upward movement of the piston rod 3 and the hammer head 4 will drive the diaphragm 54 to move, and then drive the bellows 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 shell 1 through the narrow gap between the piston rod 3 and the shell 1, when the piston rod 3 and the hammer head 4 are subjected to a large reaction force, the bellows sleeve 51 is suddenly compressed to form a buffer structure, which prevents the piston rod 3 and the hammer head 4 from moving upward too quickly, prevents them from being damaged by excessive force, and improves the practical life of the underwater electric breaker.

[0044] like Figure 4As shown, a fixing ring 53 is provided between the piston rod 3 and the diaphragm 54; the fixing ring 53 is detachably provided on the piston rod 3; it should be noted that by adjusting the axial position of the fixing ring 53 on 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 with different crushing strokes of the piston rod 3 and prevent excessive contact between the diaphragm 54 and the gravel from causing wear.

[0045] like Figure 2 and Figure 4 As shown, it can be understood that the present application does not limit the specific structure and installation method of the first guide mechanism 52, and only a feasible specific technical solution is provided below; 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 shell 1, and the other end of the telescopic rod 521 is connected to the end of the corrugated telescopic sleeve 51 away from the shell 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 reset.

[0046] It should be noted that, by setting the telescopic rod 521, the bellows telescopic sleeve 51 can only be extended and retracted along its axial direction, which can block the radial force exerted on the piston rod 3, prevent the piston rod 3 from being offset, and reduce wear; by using the spring 522 in conjunction with the telescopic rod 521, the bellows telescopic sleeve 51 is always subjected to the thrust in its axial direction, so that the bellows telescopic sleeve 51 always maintains a state tending to be extended, which is convenient for real-time protection of the piston rod 3 when the piston rod 3 moves back and forth.

[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 arranged in the housing 1, the mover assembly 22 is plugged into the first mounting plate 21, and 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 arranged 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, the mover assembly 22 can be driven to reciprocate along its axial direction.

[0048] It should be noted that when the stator assembly 23 is powered on, the mover assembly 22 can be driven to reciprocate along its axial direction. The power of the stator assembly 23 can be controlled, and the reciprocating speed of the mover assembly 22 can be accurately controlled, replacing the existing hydraulic drive method. Since there is no need for oil circuit structures, valves and other structures, the overall size of the underwater electric breaker can be greatly reduced, which is conducive to 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 plugged into the first mounting plate 21, and the linear magnetic pole array 222 is composed of a plurality of N poles, S poles, N poles and S poles superimposed in sequence along the axial direction of the connecting sleeve 221, and the linear magnetic pole array 222 is coaxially plugged 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 plurality of magnetic poles in the connecting sleeve 221.

[0050] It should be noted that a linear magnetic pole array 222 structure is formed by superimposing multiple N poles, S poles, N poles and S poles in sequence, and cooperates with the stator assembly 23 to achieve the purpose of driving the linear magnetic pole array 222 to reciprocate along its axial direction, thereby driving the piston rod 3 to reciprocate, forming a breaker hammer crushing structure, replacing the electric structure formed by the existing gear and other transmission structures, with high output efficiency and greatly reduced space occupancy, which is conducive to use in relatively small 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 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 arranged in the shell 1, and the circulation pipe 62 is arranged on the second mounting plate 61; the middle part of the circulation pipe 62 is a multi-segment S-shaped combination surrounding the outside of the stator assembly 23; a sealing ring is arranged between the piston rod 3 in the first chamber and the shell 1, and 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 shell 1; when the underwater electric breaker works underwater, the circulation pipe 62 and the sealing cavity are filled with water.

[0052] It should be noted that by arranging the circulation pipe 62 around the outer side of the stator assembly 23, the cooling area is increased, which is beneficial to cooling; and in the process of the breaker working, as the piston rod 3 moves upward, the bellows expansion sleeve 51 is driven to compress, squeezing the water in the closed cavity, so that the water flows into the circulation pipe 62, cools the stator assembly 23, and then is discharged from the other end of the circulation pipe 62; because the breaker works underwater, when the piston rod 3 moves downward, the bellows expansion sleeve 51 is driven to extend and reset, and the pressure in the closed cavity is reduced, generating negative pressure, and the outside water is guided back into the closed cavity through the circulation pipe 62. In this process, the water with lower temperature introduced from the outside passes through the position of the stator assembly 23 to achieve cooling of the stator assembly 23; that is, in the process of the piston rod 3 completing a reciprocating work, the water in the circulation pipe 62 can be driven to circulate back and forth, 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 bag 632 and a baffle 633; ​​the elastic water bag 632 is arranged on the shell 1, and the elastic water bag 632 is coaxially sleeved on the piston rod 3, and the baffle 633 is fixed to the piston rod 3, and the axial projection of the baffle 633 and the elastic water bag 632 along the piston rod 3 coincides, that is, when the piston rod 3 is observed along the axial direction of the piston rod 3, the baffle 633 and the elastic water bag 632 are partially or completely blocked; one end of the circulation tube 62 is inserted into the closed cavity, and the other end of the circulation tube 62 is connected to the inside of the elastic water bag 632; an isolation sleeve 631 is provided on the outer sleeve of the elastic water bag 632, and the isolation sleeve 631 is arranged between the shell 1 and the corrugated telescopic sleeve 51.

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

[0055] When the piston rod 3 moves upward and drives the bellows expansion sleeve 51 to compress, the coolant in the closed cavity flows to the circulation pipe 62, so as to cool the stator assembly 23. The coolant that absorbs heat in the circulation pipe 62 is introduced into the elastic water bag 632 through the circulation pipe 62, so that the elastic water bag 632 expands; when the piston rod 3 moves downward and drives the bellows expansion sleeve 51 to extend, the coolant in the elastic water bag 632 is guided back to the closed cavity after passing through the circulation pipe 62. In this way, as the piston rod 3 reciprocates, the coolant is driven to circulate back and forth, so as to cool the stator assembly 23; and when the coolant is in the closed cavity, there is only one layer of bellows expansion sleeve 51 between the coolant and the external water flow, that is, the coolant with a higher temperature at this time can exchange heat with the external water flow, so that the cooling effect of the coolant in the reciprocating circulation process can be guaranteed, and the continuous cooling effect can be guaranteed;

[0056] When the piston rod 3 is subjected to a large reverse force and moves upward rapidly, the movement of the piston rod 3 drives the elastic water bag 632 to expand. Therefore, when the piston rod 3 moves and drives the baffle 633 to move upward, the baffle 633 will squeeze the expanded elastic water bag 632 to prevent the piston rod 3 from moving upward too long and colliding with the internal structure of the shell 1, thereby having a good buffering effect. By squeezing the elastic water bag 632, the coolant in the elastic water bag 632 can be pushed to flow back quickly, so as to increase the flow speed, improve the reciprocating circulation effect, and thereby improve 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 adjusting mechanism 24, which is used to adjust the axial distance between the stator assembly 23 and the mover assembly 22; the adjusting mechanism 24 includes a cover plate 241, a mounting sleeve 242 and a rotating block 243; the mounting sleeve 242 is sleeved on the stator assembly 23, the cover plate 241 is arranged on the top of the mounting sleeve 242, and the cover plate 241 is connected to the first mounting plate 21; the bottom end of the mounting sleeve 242 is spirally connected with a rotating block 243, and the rotating block 243 is coaxially connected to the bottom of the stator assembly 23, and there is a certain distance between the top of the stator assembly 23 and the cover plate 241. When the knob rotating block 243 is turned upward, the stator assembly 23 can be driven to move along its axial direction.

[0058] It should be noted that, through the setting of the adjustment mechanism 24, the reciprocating stroke of the piston rod 3 can be adjusted 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, and then the stator assembly 23 is pushed to move by the rotating block 243, so as to achieve the purpose of adjusting the axial distance between the stator assembly 23 and the movable assembly 22, so as to control the reciprocating stroke of the movable assembly 22, and then achieve the purpose of controlling the reciprocating stroke of the piston rod 3; and by threading the rotating block 243 and the mounting sleeve 242, the rotating block 243 has an axial self-locking characteristic, which is convenient for maintaining the stator assembly 23 to the corresponding position, thereby improving the stability of the stator assembly 23 after the position is adjusted.

[0059] like Figure 3 and Figure 7 As shown, a second guide mechanism 244 is arranged between the stator assembly 23 and the mounting sleeve 242, and the second guide mechanism 244 is used to provide guidance for the stator assembly 23 when it moves; it can be understood that the present application does not limit the specific structure and installation method of the second guide mechanism 244, and only a feasible specific technical scheme is provided below; the second guide mechanism 244 includes a connecting disc 2441 and a slider 2442; the connecting disc 2441 is arranged between the stator assembly 23 and the rotating block 243, and the connecting disc 2441 is coaxially rotatably connected to the rotating block 243, the slider 2442 is arranged on the circumferential side of the connecting disc 2441, and a slide groove 2443 is opened in the mounting sleeve 242, the slide groove 2443 is parallel to the axial direction of the stator assembly 23, and the slider 2442 is slidably connected to the slide groove 2443.

[0060] It should be noted that since the coil windings in the stator assembly 23 need to be electrically connected to the outside world, in order to reduce the pulling of the coil windings and the wires connected to the outside world caused by the rotational force applied to the stator assembly 23 when the stator assembly 23 is driven to move, a second guide mechanism 244 is provided. Specifically, when the rotating block 243 is rotated and lifted, the slider 2442 and the slide groove 2443 are used in coordination, so that the stator assembly 23 can only be lifted and lowered along the slide groove 2443 and will not rotate, thereby reducing the pulling of the wires connected to the outside world and improving the convenience of use.

[0061] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An underwater electric breaker, comprising a housing (1); characterized in that: A linear output mechanism (2) is arranged in the housing (1); a piston rod (3) with a hammer head (4) is plugged 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 hammer 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); the isolation mechanism (5) includes: A bellows expansion sleeve (51), wherein the bellows expansion sleeve (51) is sleeved on the piston rod (3) near the hammer head (4), and one end of the bellows expansion sleeve (51) is connected to the housing (1); a first guide mechanism (52), the first guide mechanism (52) being arranged in the bellows telescopic sleeve (51), one end of the first guide mechanism (52) being connected to the housing (1), and the other end of the first guide mechanism (52) being connected to the bellows telescopic sleeve (51); the first guide mechanism (52) being used to allow the bellows telescopic sleeve (51) to telescope along its axial direction; and a diaphragm (54), one end of the diaphragm (54) being arranged on the bellows expansion sleeve (51), and the other end of the diaphragm (54) being arranged on the piston rod (3); the piston rod (3), the diaphragm (54), the bellows expansion sleeve (51) and the shell (1) enclose a first chamber to isolate part of the piston rod (3) from the outside; the first chamber is connected to the interior of the shell (1) through a gap between the shell (1) and the piston rod (3), so that when the space of the first chamber changes, the pressure in the first chamber is relatively stable.

2. The underwater electric breaker according to claim 1, characterized in that: A fixing ring (53) is arranged between the piston rod (3) and the diaphragm (54); the fixing ring (53) is detachably arranged on the piston rod (3).

3. The underwater electric breaker according to claim 1, characterized in that: The first guiding mechanism (52) comprises 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 an 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 reset.

4. The underwater electric breaker according to claim 1, characterized in that: The linear output mechanism (2) comprises a first mounting plate (21), a mover assembly (22) and a stator assembly (23); the first mounting plate (21) is arranged in the housing (1), the mover assembly (22) is plugged into the first mounting plate (21), and 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 arranged 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, the mover assembly (22) can be driven to reciprocate along its axial direction.

5. The underwater electric breaker according to claim 4, characterized in that: The mover assembly (22) comprises a connecting sleeve (221) and a linear magnetic pole array (222); the connecting sleeve (221) is plugged into the first mounting plate (21); the linear magnetic pole array (222) is composed of a plurality of N poles, S poles, N poles and S poles sequentially superimposed along the axial direction of the connecting sleeve (221); the linear magnetic pole array (222) is coaxially plugged 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 a plurality of magnetic poles in the connecting sleeve (221).

6. The underwater electric breaker according to claim 4, 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 arranged in the shell (1), and the circulation pipe (62) is arranged on the second mounting plate (61); the middle part of the circulation pipe (62) is in a multi-segment S-shaped combination and surrounds the outside of the stator assembly (23); a sealing ring is arranged between the piston rod (3) in the first chamber and the shell (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 chamber; one end of the circulation pipe (62) is inserted into the closed chamber, and the other end of the circulation pipe (62) is connected to the outside of the shell (1); when the underwater electric breaker works underwater, the circulation pipe (62) and the sealing chamber are filled with water.

7. The underwater electric breaker according to claim 6, characterized in that: The cooling mechanism (6) further comprises a buffer mechanism (63), wherein the buffer mechanism (63) comprises an elastic water bag (632) and a baffle (633); the elastic water bag (632) is arranged on the housing (1), and the elastic water bag (632) is coaxially sleeved on the piston rod (3), the baffle (633) is fixed on the piston rod (3), and the axial projection of the baffle (633) and the elastic water bag (632) along the piston rod (3) overlaps; one end of the circulation tube (62) is inserted into the closed cavity, and the other end of the circulation tube (62) is connected to the inside of the elastic water bag (632); The outer cover of the elastic water bag (632) is provided with an isolation sleeve (631), and the isolation sleeve (631) is arranged between the shell (1) and the corrugated telescopic sleeve (51).

8. The underwater electric breaker according to claim 4, characterized in that: The linear output mechanism (2) further comprises an adjusting mechanism (24), wherein the adjusting mechanism (24) is used to adjust the axial distance between the stator assembly (23) and the mover assembly (22); the adjusting mechanism (24) comprises a cover plate (241), a mounting sleeve (242) and a rotating block (243); the mounting sleeve (242) is sleeved on the stator assembly (23), the cover plate (241) is arranged on the top of the mounting sleeve (242), and the cover plate (241) is connected to the first mounting plate (21); the bottom end of the mounting sleeve (242) is spirally connected with a rotating block (243), and the rotating block (243) is coaxially connected to the bottom of the stator assembly (23), and there is a certain distance between the top of the stator assembly (23) and the cover plate (241), and when the rotating block (243) is turned upward, the stator assembly (23) can be driven to move along its axial direction.

9. The underwater electric breaker according to claim 8, characterized in that: A second guide mechanism (244) is provided between the stator assembly (23) and the mounting sleeve (242), and the second guide mechanism (244) is used to provide guidance for the stator assembly (23) when it moves.

10. The underwater electric breaker according to claim 9, characterized in that: The second guide mechanism (244) comprises a connecting disc (2441) and a sliding block (2442); the connecting disc (2441) is arranged between the stator assembly (23) and the rotating block (243), and the connecting disc (2441) and the rotating block (243) are coaxially connected to each other; the sliding block (2442) is arranged on the circumferential side 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 sliding block (2442) is slidably connected to the sliding groove (2443).

Images