Underwater metal cutting tool

Abstract

The invention relates to the technical field of underwater metal cutting, and discloses an underwater metal cutting tool which comprises a hydraulic hacksaw machine, a grip is arranged on the outer side of the hydraulic hacksaw machine, a hacksaw blade is arranged at the output end of the hydraulic hacksaw machine, and a hydraulic liquid inlet pipe and a hydraulic liquid outlet pipe are fixedly connected to the lower side of the rear portion of the hydraulic hacksaw machine. According to the underwater metal cutting tool, the damping rotating shaft assembly can achieve overturning of the upper cover plate and adjustment of the positions of the chuck assembly and the outer clamping strips, a hydraulic rod pushes a second rotating shaft to rotate, the distance between the inner clamping strip and the outer clamping strip is reduced, stable clamping of a round pipe fitting is achieved, it is guaranteed that a hacksaw blade is accurately positioned, and slipping is avoided; the upper cover plate can be folded to an unused position through a clamping piece and a clamping ring, an inserting column is inserted into an inserting hole and a supporting rod, the hacksaw blade is prevented from being knocked by a third rotating shaft, and an inner rod, a spring and an outer sleeve rod in the overturning assembly can guarantee stable underwater cutting through deformation buffering of the spring.

Description

Technical Field

[0001] The invention relates to the technical field of underwater metal cutting, in particular to an underwater metal cutting tool. Background Art

[0002] Underwater metal cutting tools are a type of equipment specifically used to cut metal materials in underwater environments. They are widely used in marine engineering, ship repair, underwater rescue and other fields. Hydraulic reciprocating saws are also one of the underwater metal cutting tools. Hydraulic reciprocating saws are a cutting tool driven by a hydraulic power system. The hydraulic motor drives the saw blade to reciprocate to achieve cutting of various materials such as metals. The hydraulic reciprocating saw is mainly composed of a hydraulic motor, a crank-connecting rod mechanism, a saw blade, a fuselage and a control system.

[0003] However, existing underwater metal cutting tools do not have the function of clamping round pipes. In actual use, two divers are required to cooperate with each other, with one diver holding the pipe with both hands and the other diver cutting the pipe. However, the saw blade may slip and shift, and accurate positioning and cutting cannot be performed. Due to the large underwater buoyancy and dim environment, the divers have no relative fulcrum and limited visual distance, and the shifted saw blade may scratch the divers.

[0004] It can be seen that providing an underwater metal cutting tool with accurate positioning and safe use is an urgent problem to be solved in the field. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an underwater metal cutting tool, aiming to solve the problems of the existing underwater metal cutting tools in terms of cutting position positioning and safety.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An underwater metal cutting tool comprises a hydraulic hacksaw machine, a handle is arranged on the outer side of the hydraulic hacksaw machine, a hacksaw blade is arranged on the output end of the hydraulic hacksaw machine, a hydraulic inlet pipe and a hydraulic outlet pipe are fixedly connected to the lower side of the rear part of the hydraulic hacksaw machine, a support rod is fixedly installed on the upper part of the hydraulic hacksaw machine, a connecting seat is fixedly installed on the upper left side of the hydraulic hacksaw machine by bolts, a damping shaft assembly is rotatably installed on the side of the connecting seat away from the hydraulic hacksaw machine, a flip assembly is arranged on the outer side of the damping shaft assembly, an upper cover plate is arranged on the end of the flip assembly away from the damping shaft assembly, two clamping frames are arranged on the outer side of the upper cover plate, a chuck assembly is arranged on the inner side of the clamping frame, an outer clamping strip is arranged on the end of the clamping frame away from the upper cover plate, a plug-in hole is opened on the outer side of the upper cover plate close to one end of the connecting seat, a plug-in column adapted to the plug-in hole is arranged on the outer side of the upper cover plate, a clamping piece is fixedly installed on the top end of the support rod, and a clamping ring is arranged on the inner side of the upper cover plate.

[0008] Preferably, the hydraulic inlet pipe and the hydraulic outlet pipe are interconnected with the hydraulic reciprocating saw oil supply device through a pipeline, the steel saw blade is detachably connected to the output end of the hydraulic steel saw machine by bolts, and two identical support rods are provided, and the two support rods are symmetrically distributed on the upper part of the hydraulic steel saw machine.

[0009] Through the above technical solution, the hydraulic inlet pipe and the hydraulic outlet pipe are designed to be interconnected with the hydraulic reciprocating saw oil supply device through pipelines, so as to provide a power source for the cutting tool underwater. At the same time, the detachable steel saw blade is also convenient for maintenance and repair.

[0010] Preferably, the connecting seat is made of stainless steel, the center line of the damping shaft assembly and the connecting seat are located on the same straight line, and the plug-in column passes through the plug-in hole and extends to the inside of the support rod.

[0011] Through the above technical solution, the connecting seat made of stainless steel can effectively prevent metal cutting tools from rusting when used underwater for a long time. Through the design of the damping shaft assembly, the upper cover plate can be flipped, and the position of the chuck assembly and the outer clamping strip can be adjusted to facilitate the clamping of round pipes.

[0012] Preferably, two identical clamping pieces and two identical clamping rings are provided, the cross-sections of the clamping pieces and the clamping rings are in a "C"-shaped structure, and the clamping pieces and the clamping rings are in conflict with each other.

[0013] Through the above technical solution, when the chuck assembly and the outer clamping strip are not in use, the upper cover plate can be flipped and folded to an unused position through the design of the snap-on plate and the snap-on ring, and the plug-in column can be inserted into the plug-in hole and the interior of the support rod to ensure that the upper cover plate will not loosen.

[0014] Preferably, the flip assembly includes a connecting plate, an inner rod, a spring, an outer rod and a first rotating shaft. The connecting plate is fixedly mounted on both ends of the damping rotating shaft assembly. The inner rod is arranged on the outer side of the connecting plate. The outer rod is arranged on the end of the inner rod away from the connecting plate. A spring is arranged between the outer rod and the connecting plate. The first rotating shaft is rotatably mounted on the end of the outer rod away from the inner rod. The first rotating shaft is rotatably connected to the upper cover plate.

[0015] Preferably, two identical connecting plates, inner rods, springs, outer rods and first rotating shafts are provided, and the two connecting plates, inner rods, springs, outer rods and first rotating shafts are symmetrically distributed about the center line of the upper cover plate, and the center lines of the inner rod and the outer rod are located on the same straight line.

[0016] Preferably, the cross-section of the connecting piece is in an "L"-shaped structure, the inner rod passes through the connecting piece and extends to the outside of the connecting piece, and the inner rod and the connecting piece are slidably connected.

[0017] Through the above technical solution, through the design of the inner rod, spring and outer rod inside the flip assembly, the outer rod can transmit power to the inner rod, and through the deformation of the spring between the connecting plate and the outer rod, the spring can play a certain buffering role during underwater cutting, and the flip assembly can be rotated through the damping shaft assembly and the connecting seat, and the upper cover plate and the chuck assembly are driven to flip through the flip assembly, thereby improving the practicality of the underwater metal cutting tool.

[0018] Preferably, the chuck assembly includes a main connecting rod, an ear seat, a hydraulic rod, a second rotating shaft, a third rotating shaft, a chuck seat, an inner clamping strip and a guide groove, the main connecting rod and the third rotating shaft are both installed through two clamping frames, an ear seat is rotatably installed on the outer side of the main connecting rod, a hydraulic rod is fixedly installed on one end of the ear seat away from the main connecting rod, the second rotating shaft is rotatably installed on the movable end of the hydraulic rod, a chuck seat is rotatably installed on the outer side of the third rotating shaft, an inner clamping strip is fixedly installed on the outer side of the chuck seat, and a guide groove adapted to the second rotating shaft is provided on the outer side of the clamping frame.

[0019] Through the above technical solution, during use, the movable end of the hydraulic rod pushes the second rotating shaft to rotate around the center of the third rotating shaft. At this time, the second rotating shaft is folded toward the direction of the outer clamping strip under the guidance of the guide groove. At this time, the distance between the inner clamping strip and the outer clamping strip is reduced. Through the cooperation of the inner clamping strip and the outer clamping strip, the round tube can be clamped, which is convenient for subsequent cutting of the round tube.

[0020] Preferably, the ear seat, hydraulic rod, second rotating shaft, chuck seat and inner clamping strip are all provided with two identical ones, and the two ear seats, hydraulic rod, second rotating shaft, chuck seat and inner clamping strip are symmetrically distributed on the inner side of the upper cover plate.

[0021] Through the above technical solution, through the design of two inner clamping strips and two outer clamping strips, the two ends of the round pipe can be buckled. During the cutting process, the entire underwater metal cutting tool can be fixed and positioned, thereby improving the cutting efficiency of the underwater metal cutting tool.

[0022] Preferably, the second rotating shaft passes through the chuck seat and extends to the inside of the guide groove, the second rotating shaft and the guide groove are slidably connected, the cross-section of the guide groove is a "C"-shaped structure, and the center of the guide groove and the center of the third rotating shaft are located on the same horizontal line.

[0023] Through the above technical solution, the second rotating shaft is folded toward the direction of the outer clamping strip under the guidance of the guide groove. At this time, the distance between the inner clamping strip and the outer clamping strip is reduced. Through the cooperation of the inner clamping strip and the outer clamping strip, the round tube can be clamped, which facilitates the subsequent cutting of the round tube and improves practicality.

[0024] Compared with the prior art, the underwater metal cutting tool provided by the present invention has the following beneficial effects:

[0025] 1. The underwater metal cutting tool is provided with a hydraulic hacksaw machine, a damping shaft assembly, a flipping assembly, an upper cover plate, a clamping frame and a chuck assembly. The design of the damping shaft assembly can realize the flipping of the upper cover plate, and the position of the chuck assembly and the outer clamping strip can be adjusted. The movable end of the hydraulic rod pushes the second shaft to rotate around the center of the third shaft. At this time, the second shaft is folded toward the direction of the outer clamping strip under the guidance of the guide groove. At this time, the distance between the inner clamping strip and the outer clamping strip is reduced. Through the cooperation of the inner clamping strip and the outer clamping strip, the round pipe can be clamped, the hacksaw blade can be accurately positioned, and the slipping and displacement of the hacksaw blade can be effectively avoided, thereby improving the cutting efficiency of underwater round pipes.

[0026] 2. When the chuck assembly and the outer clamping strip are not in use, the design of the snap-on plate and the snap-on ring enables the upper cover to be flipped and folded to an unused position, and the plug-in column can be inserted into the plug-in hole and the inside of the support rod to ensure that the upper cover will not loosen, which can effectively prevent the third shaft from damaging the hacksaw blade.

[0027] 3. This underwater metal cutting tool, through the design of the inner rod, spring and outer rod inside the flip assembly, the outer rod can transmit power to the inner rod, and through the deformation of the spring between the connecting piece and the outer rod, the spring can play a certain buffering role during underwater cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The first three-dimensional structure of the underwater metal cutting tool of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 2 The first three-dimensional structure of the underwater metal cutting tool of the present invention is shown in FIG. Figure 2 ;

[0030] Figure 3 The second stereoscopic structure of the underwater metal cutting tool of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 4 The second stereoscopic structure of the underwater metal cutting tool of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the chuck assembly of the underwater metal cutting tool of the present invention;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the flip assembly of the underwater metal cutting tool in the present invention.

[0034] Among them: 1. hydraulic hacksaw machine; 2. handle; 3. hydraulic inlet pipe; 4. hydraulic outlet pipe; 5. support rod; 6. connecting seat; 7. damping shaft assembly; 8. flip assembly; 801. connecting plate; 802. inner rod; 803. spring; 804. outer rod; 805. first shaft; 9. upper cover plate; 10. clamping frame; 11. chuck assembly; 1101. main connecting rod; 1102. ear seat; 1103. hydraulic rod; 1104. second shaft; 1105. third shaft; 1106. chuck seat; 1107. inner clamping strip; 1108. guide groove; 12. outer clamping strip; 13. plug-in hole; 14. hacksaw blade; 15. plug-in column; 16. snap-in plate; 17. snap-in ring. DETAILED DESCRIPTION

[0035] 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.

[0036] Embodiment 1:

[0037] like Figure 1-4 As shown, it shows the example structure of the underwater metal cutting tool given in this example.

[0038] Based on the diagram, the underwater metal cutting tool given in this example includes a hydraulic hacksaw machine 1, a handle 2 is arranged on the outer side of the hydraulic hacksaw machine 1, a hacksaw blade 14 is arranged at the output end of the hydraulic hacksaw machine 1, a hydraulic inlet pipe 3 and a hydraulic outlet pipe 4 are fixedly connected to the lower side of the rear of the hydraulic hacksaw machine 1, a support rod 5 is fixedly installed on the upper part of the hydraulic hacksaw machine 1, a connecting seat 6 is fixedly installed on the upper left side of the hydraulic hacksaw machine 1 by bolts, a damping shaft assembly 7 is rotatably installed on the side of the connecting seat 6 away from the hydraulic hacksaw machine 1, and the outer side of the damping shaft assembly 7 A flip assembly 8 is provided, and an upper cover plate 9 is provided at one end of the flip assembly 8 away from the damping shaft assembly 7, two clamping frames 10 are provided on the outer side of the upper cover plate 9, a chuck assembly 11 is provided on the inner side of the clamping frame 10, an outer clamping strip 12 is provided on the end of the clamping frame 10 away from the upper cover plate 9, a plug-in hole 13 is provided on the outer side of one end of the upper cover plate 9 close to the connecting seat 6, a plug-in column 15 adapted to the plug-in hole 13 is provided on the outer side of the upper cover plate 9, a snap-in piece 16 is fixedly installed on the top end of the support rod 5, and a snap-in ring 17 is provided on the inner side of the upper cover plate 9.

[0039] On this basis, the hydraulic inlet pipe 3 and the hydraulic outlet pipe 4 are interconnected with the hydraulic reciprocating saw oil supply device through pipelines, the hacksaw blade 14 is detachably connected to the output end of the hydraulic hacksaw machine 1 by bolts, and two identical support rods 5 are provided, and the two support rods 5 are symmetrically distributed on the upper part of the hydraulic hacksaw machine 1.

[0040] With such arrangement, the hydraulic inlet pipe 3 and the hydraulic outlet pipe 4 are interconnected with the hydraulic reciprocating saw oil supply device through pipelines, so that a power source can be provided for the cutting tool underwater. Meanwhile, the detachable steel saw blade 14 is also convenient for maintenance and repair.

[0041] As a further explanation, in this example, the connecting seat 6 is made of stainless steel, the center lines of the damping shaft assembly 7 and the connecting seat 6 are located on the same straight line, and the plug-in column 15 passes through the plug-in hole 13 and extends to the inside of the support rod 5.

[0042] With such a configuration, the connecting seat 6 made of stainless steel can effectively prevent the metal cutting tool from rusting when used underwater for a long time. Through the design of the damping shaft assembly 7, the upper cover plate 9 can be flipped, and the position of the chuck assembly 11 and the outer clamping strip 12 can be adjusted to facilitate clamping of round pipes.

[0043] Further integration Figure 5 As shown, in this example, two identical clamping pieces 16 and two identical clamping rings 17 are provided, and the cross-sections of the clamping pieces 16 and the clamping rings 17 are in a "C"-shaped structure, and the clamping pieces 16 and the clamping rings 17 are in conflict with each other.

[0044] With such arrangement, when the chuck assembly 11 and the outer clamping strip 12 are not in use, the upper cover plate 9 can be flipped and folded to an unused position through the design of the snap-on plate 16 and the snap-on ring 17, and the plug-in column 15 can be inserted into the plug-in hole 13 and the interior of the support rod 5 to ensure that the upper cover plate 9 will not loosen.

[0045] Embodiment 2:

[0046] This example provides a specific implementation scheme for the flip component 8 based on the scheme in Example 1.

[0047] exist Figures 1 to 5 Based on this, further combining Figure 5 and Figure 6 As shown, the flip assembly 8 provided in this example includes a connecting piece 801 , an inner rod 802 , a spring 803 , an outer rod 804 and a first rotating shaft 805 .

[0048] Among them, the connecting piece 801 is fixedly installed at both ends of the damping shaft assembly 7, an inner rod 802 is arranged on the outer side of the connecting piece 801, an outer rod 804 is arranged at the end of the inner rod 802 away from the connecting piece 801, a spring 803 is arranged between the outer rod 804 and the connecting piece 801, and a first rotating shaft 805 is rotatably installed at the end of the outer rod 804 away from the inner rod 802, and the first rotating shaft 805 is rotatably connected to the upper cover plate 9.

[0049] Furthermore, in this example, two identical connecting plates 801, inner rod 802, spring 803, outer rod 804 and first rotating shaft 805 are provided, and the two connecting plates 801, inner rod 802, spring 803, outer rod 804 and first rotating shaft 805 are symmetrically distributed about the center line of the upper cover plate 9, and the center lines of the inner rod 802 and the outer rod 804 are located on the same straight line.

[0050] As a further configuration, in this example, the cross-section of the connecting piece 801 is an "L"-shaped structure, the inner rod 802 passes through the connecting piece 801 and extends to the outside of the connecting piece 801, and the inner rod 802 and the connecting piece 801 are slidably connected.

[0051] When the flip assembly 8 configured in this way is used, through the design of the inner rod 802, spring 803 and outer rod 804 inside the flip assembly 8, the outer rod 804 can transmit power to the inner rod 802, and through the deformation of the spring 803 between the connecting piece 801 and the outer rod 804, the spring 803 can play a certain buffering role during underwater cutting, and the flip assembly 8 can be rotated through the damping shaft assembly 7 and the connecting seat 6, and the upper cover plate 9 and the chuck assembly 11 are driven to flip through the flip assembly 8, thereby improving the practicality of the underwater metal cutting tool.

[0052] Embodiment three:

[0053] This example provides a specific implementation scheme for the chuck assembly 11 based on the schemes of Example 1 and Example 2.

[0054] exist Figures 1 to 5 Based on this, further combining Figure 5 and Figure 6 As shown, the chuck assembly 11 provided in this example includes a main connecting rod 1101 , an ear seat 1102 , a hydraulic rod 1103 , a second rotating shaft 1104 , a third rotating shaft 1105 , a chuck seat 1106 , an inner clamping strip 1107 and a guide groove 1108 .

[0055] Among them, the main connecting rod 1101 and the third rotating shaft 1105 are both installed between the two clamping frames 10, the outer side of the main connecting rod 1101 is rotatably installed with an ear seat 1102, the end of the ear seat 1102 away from the main connecting rod 1101 is fixedly installed with a hydraulic rod 1103, the movable end of the hydraulic rod 1103 is rotatably installed with a second rotating shaft 1104, the outer side of the third rotating shaft 1105 is rotatably installed with a chuck seat 1106, the outer side of the chuck seat 1106 is fixedly installed with an inner clamping strip 1107, and the outer side of the clamping frame 10 is provided with a guide groove 1108 adapted to the second rotating shaft 1104.

[0056] When the chuck assembly 11 is configured in this way, during use, the movable end of the hydraulic rod 1103 pushes the second rotating shaft 1104 to rotate around the center of the third rotating shaft 1105. At this time, the second rotating shaft 1104 is folded toward the direction of the outer clamping strip 12 under the guidance of the guide groove 1108. At this time, the distance between the inner clamping strip 1107 and the outer clamping strip 12 is reduced. Through the cooperation between the inner clamping strip 1107 and the outer clamping strip 12, the round tube can be clamped, which is convenient for subsequent cutting of the round tube.

[0057] As a further configuration, in this example, two identical ear seats 1102 , hydraulic rods 1103 , second rotating shafts 1104 , chuck seats 1106 and inner clamping strips 1107 are provided, and the two ear seats 1102 , hydraulic rods 1103 , second rotating shafts 1104 , chuck seats 1106 and inner clamping strips 1107 are symmetrically distributed on the inner side of the upper cover plate 9 .

[0058] With such arrangement, the two inner clamping strips 1107 and the two outer clamping strips 12 can be designed to hold the two ends of the round tube. During the cutting process, the entire underwater metal cutting tool can be fixed and positioned, thereby improving the cutting efficiency of the underwater metal cutting tool.

[0059] As a further configuration, in this example, the second rotating shaft 1104 passes through the chuck seat 1106 and extends to the inside of the guide groove 1108. The second rotating shaft 1104 and the guide groove 1108 are slidably connected. The cross section of the guide groove 1108 is a "C"-shaped structure, and the center of the guide groove 1108 and the center of the third rotating shaft 1105 are located on the same horizontal line. With such a configuration, the second rotating shaft 1104 is folded toward the outer clamping strip 12 under the guidance of the guide groove 1108. At this time, the spacing between the inner clamping strip 1107 and the outer clamping strip 12 is reduced. Through the cooperation between the inner clamping strip 1107 and the outer clamping strip 12, the round tube can be clamped, which is convenient for subsequent cutting of the round tube and improves practicality.

[0060] With respect to the underwater metal cutting tool solution provided in the above-mentioned example solution, the use process of the underwater metal cutting tool is specifically described below.

[0061] Combination Figures 1 to 6 As shown, when the underwater metal cutting tool is in use, the staff first connects the hydraulic liquid inlet pipe 3 and the hydraulic liquid outlet pipe 4 to the hydraulic reciprocating saw oil supply device through a pipeline, and then carries the underwater metal cutting tool into the water.

[0062] After reaching the designated position, the staff will pull out the two plug-in columns 15 from the sides of the upper cover plate 9, pry the upper cover plate 9, and flip the upper cover plate 9 around the damping shaft assembly 7 through the flip assembly 8 until the upper cover plate 9 is at the upper left of the hydraulic hacksaw machine 1, place the hacksaw blade 14 at the position to be cut, clamp the round tube between the outer clamping bar 12 and the inner clamping bar 1107, use the hydraulic rod 1103 inside the chuck assembly 11 to drive the chuck seat 1106 to rotate around the third axis 1105, use the inner clamping bar 1107 and the outer clamping bar 12 to clamp the round tube, and then cut.

[0063] During the cutting process, the design of the two inner clamping strips 1107 and the two outer clamping strips 12 can buckle the two ends of the round pipe, thereby fixing and positioning the entire underwater metal cutting tool, thereby improving the cutting efficiency of the underwater metal cutting tool. At the same time, through the deformation of the spring 803 between the connecting piece 801 and the outer rod 804, the spring 803 can play a certain buffering role during underwater cutting, thereby improving the practicality of the underwater metal cutting tool.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underwater metal cutting tool, comprising a hydraulic hacksaw (1), characterized in that: The outer side of the hydraulic hacksaw machine (1) is provided with a handle (2), the output end of the hydraulic hacksaw machine (1) is provided with a hacksaw blade (14), the lower side of the rear of the hydraulic hacksaw machine (1) is fixedly connected with a hydraulic inlet pipe (3) and a hydraulic outlet pipe (4), the upper part of the hydraulic hacksaw machine (1) is fixedly installed with a support rod (5), the upper left side of the hydraulic hacksaw machine (1) is fixedly installed with a connecting seat (6) by bolts, the side of the connecting seat (6) away from the hydraulic hacksaw machine (1) is rotatably installed with a damping shaft assembly (7), the outer side of the damping shaft assembly (7) is provided with a flip assembly (8), the flip assembly (8) is away from the hydraulic hacksaw machine (1) and the hinge assembly (8) is fixedly installed with a hinge assembly (7). An upper cover plate (9) is provided at one end of the damping shaft assembly (7), two clamping frames (10) are provided on the outer side of the upper cover plate (9), a chuck assembly (11) is provided on the inner side of the clamping frame (10), an outer clamping strip (12) is provided on the end of the clamping frame (10) away from the upper cover plate (9), a plug-in hole (13) is provided on the outer side of one end of the upper cover plate (9) close to the connecting seat (6), a plug-in column (15) adapted to the plug-in hole (13) is provided on the outer side of the upper cover plate (9), a snap-in sheet (16) is fixedly installed on the top end of the support rod (5), and a snap-in ring (17) is provided on the inner side of the upper cover plate (9).

2. An underwater metal cutting tool according to claim 1, characterized in that: The hydraulic liquid inlet pipe (3) and the hydraulic liquid outlet pipe (4) are interconnected with the hydraulic reciprocating saw oil supply device through a pipeline, the hacksaw blade (14) is detachably connected to the output end of the hydraulic hacksaw machine (1) through bolts, and two identical support rods (5) are provided, and the two support rods (5) are symmetrically distributed on the upper part of the hydraulic hacksaw machine (1).

3. The underwater metal cutting tool according to claim 1, characterized in that: The connecting seat (6) is made of stainless steel, the center lines of the damping shaft assembly (7) and the connecting seat (6) are located on the same straight line, and the plug-in column (15) passes through the plug-in hole (13) and extends to the inside of the support rod (5).

4. The underwater metal cutting tool according to claim 1, characterized in that: The clamping piece (16) and the clamping ring (17) are both provided with two identical ones, the cross-sections of the clamping piece (16) and the clamping ring (17) are in a "C"-shaped structure, and the clamping piece (16) and the clamping ring (17) are in conflict with each other.

5. The underwater metal cutting tool according to claim 1, characterized in that: The flip assembly (8) comprises a connecting piece (801), an inner rod (802), a spring (803), an outer rod (804) and a first rotating shaft (805); the connecting piece (801) is fixedly mounted at two ends of the damping rotating shaft assembly (7); the inner rod (802) is arranged on the outer side of the connecting piece (801); the outer rod (804) is arranged at one end of the inner rod (802) away from the connecting piece (801); a spring (803) is arranged between the outer rod (804) and the connecting piece (801); the first rotating shaft (805) is rotatably mounted at one end of the outer rod (804) away from the inner rod (802); and the first rotating shaft (805) is rotatably connected to the upper cover plate (9).

6. An underwater metal cutting tool according to claim 5, characterized in that: The connecting piece (801), the inner rod (802), the spring (803), the outer rod (804) and the first rotating shaft (805) are all provided with two identical ones, and the two connecting pieces (801), the inner rod (802), the spring (803), the outer rod (804) and the first rotating shaft (805) are all symmetrically distributed about the center line of the upper cover plate (9), and the center lines of the inner rod (802) and the outer rod (804) are located on the same straight line.

7. The underwater metal cutting tool according to claim 5, characterized in that: The cross section of the connecting piece (801) is in an "L"-shaped structure, the inner rod (802) passes through the connecting piece (801) and extends to the outside of the connecting piece (801), and the inner rod (802) and the connecting piece (801) are slidably connected.

8. The underwater metal cutting tool according to claim 1, characterized in that: The chuck assembly (11) comprises a main connecting rod (1101), an ear seat (1102), a hydraulic rod (1103), a second rotating shaft (1104), a third rotating shaft (1105), a chuck seat (1106), an inner clamping strip (1107) and a guide groove (1108). The main connecting rod (1101) and the third rotating shaft (1105) are both installed between the two clamping frames (10). The ear seat (1102) is rotatably installed on the outer side of the main connecting rod (1101). A hydraulic rod (1103) is fixedly mounted on one end of the ear seat (1102) away from the main connecting rod (1101); a second rotating shaft (1104) is rotatably mounted on the movable end of the hydraulic rod (1103); a chuck seat (1106) is rotatably mounted on the outer side of the third rotating shaft (1105); an inner clamping strip (1107) is fixedly mounted on the outer side of the chuck seat (1106); and a guide groove (1108) adapted to the second rotating shaft (1104) is provided on the outer side of the clamping frame (10).

9. An underwater metal cutting tool according to claim 8, characterized in that: The ear seat (1102), the hydraulic rod (1103), the second rotating shaft (1104), the chuck seat (1106) and the inner clamping strip (1107) are all provided with two identical ones, and the two ear seats (1102), the hydraulic rod (1103), the second rotating shaft (1104), the chuck seat (1106) and the inner clamping strip (1107) are symmetrically distributed on the inner side of the upper cover plate (9).

10. The underwater metal cutting tool according to claim 8, characterized in that: The second rotating shaft (1104) passes through the chuck seat (1106) and extends to the inside of the guide groove (1108). The second rotating shaft (1104) and the guide groove (1108) are slidably connected. The cross-section of the guide groove (1108) is a "C"-shaped structure. The center of the guide groove (1108) and the center of the third rotating shaft (1105) are located on the same horizontal line.

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