A pneumatic cutting saw convenient for underwater use

Abstract

The present invention relates to the technical field of underwater working tools, and in particular to a pneumatic cutting saw that is convenient for underwater use. The present invention provides a pneumatic cutting saw that is convenient for underwater use and can prevent cut objects from falling into the water and is convenient for collecting cut waste. A pneumatic cutting saw that is convenient for underwater use includes a tool rack, a stroke handle, an operating handle, an air pump, etc. The tool rack is connected to the stroke handle, the lower part of the stroke handle is rotatably connected to a power unit, a saw blade is connected to the output shaft end of the power unit, and an air pump is connected to the right side of the power unit. The present invention rewinds the belt through a belt winder, so that the belt cooperates with the wave positioning plate to fix the cut pieces that have fallen, thereby preventing the cut objects from falling into the water and facilitating the collection of cut waste.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater working tools, in particular to a pneumatic cutting saw that is convenient for underwater use. Background Art

[0002] When installing underwater pipes and other objects, it is usually necessary to cut off excess pipes to make them meet the usage specifications.

[0003] Underwater pneumatic cutting saws are usually used for underwater cutting. Existing underwater pneumatic cutting saws usually use high-pressure gas as power to drive the saw blade to run at high speed, and use the saw blade to cut underwater pipes. However, the existing cutting saws are unable to fix the pipes and other objects they cut during cutting, resulting in the cutting waste being introduced into the water to pollute the water quality, which requires subsequent salvage, which is inconvenient.

[0004] Therefore, a pneumatic cutting saw that can prevent the cut objects from falling into the water and is convenient for collecting the cut waste has been developed. Summary of the Invention

[0005] In order to overcome the shortcomings of existing cutting saws that they are unable to fix objects such as pipes cut during cutting, resulting in cutting waste being introduced into the water to pollute the water quality and requiring subsequent salvage, which is inconvenient, the present invention provides a pneumatic cutting saw that can prevent the cut objects from falling into the water and facilitate the collection of cut waste, which is easy to use underwater.

[0006] The technical solution is: a pneumatic cutting saw that is easy to use underwater, including a tool holder, a stroke handle, an operating handle, an air pump, a power unit, a saw blade, a fixing mechanism and a locking mechanism. The tool holder is connected to the stroke handle, the lower part of the stroke handle is rotatably connected to the power unit, the saw blade is connected to the output shaft end of the power unit, the air pump is connected to the right side of the power unit, and the right part of the power unit is rotatably connected to the operating handle. The front side of the tool holder is provided with a fixing mechanism for fixing the underwater objects being cut, and the rear side of the tool holder is provided with a locking mechanism for locking the underwater objects that have been cut and dropped to prevent them from falling.

[0007] As a further preferred solution, the fixing mechanism includes a motor, a screw, a built-in belt conveyor, a sprocket and a chain. The motor is connected to the right part of the tool holder, and the screw is connected to the motor output shaft. The left end of the screw passes through the tool holder, and the screw is threadedly connected to the built-in belt conveyor. The output end of the built-in belt conveyor is connected to a sprocket. Multiple chains are wound between the sprocket and the lower right part of the tool holder. After the cutting object passes through the chain, the motor and the built-in belt conveyor are started, and the rotation of the motor output shaft drives the screw to rotate, so that the screw controls the built-in belt conveyor to move left and right to adapt to the size of the cutting object. At the same time, the built-in belt conveyor controls the sprocket to rotate, and the sprocket winds up the chain, so that the chain is tightened to connect and fix the tool holder and the cutting object, thereby assisting the cutting work.

[0008] As a further preferred solution, the locking mechanism includes a belt winder, a long belt, a spring buckle and a wave-shaped positioning plate. The belt winder is connected to the right side of the rear of the tool rack, and the spring buckle is slidably connected to the left rear of the tool rack. A long belt is wound between the spring buckle and the belt winder, and a wave-shaped positioning plate is connected to the lower side of the rear of the tool rack. The long belt is wound by the belt winder so that the long belt cooperates with the wave-shaped positioning plate to fix the cut pieces that have fallen and prevent the cut pieces from falling into the water.

[0009] As a further preferred solution, it also includes a guiding mechanism that can guide the pressed substrate, the guiding mechanism includes a long curved frame, a guide wheel and a compression spring, the lower part of the operating handle is connected to the long curved frame, the left and right front and back sides of the long curved frame are rotatably connected to the guide wheels, the guide wheels are squeezed together with the saw blade, and a compression spring is clamped between the long curved frame and the power unit. The rotation of the operating handle drives the long curved frame to rotate, and the rotation of the long curved frame guides the cutting of the saw blade through the guide wheel, assisting workers in cutting operations.

[0010] As a further preferred solution, it also includes a slow-feed mechanism that can automatically perform the saw blade downward pressure operation. The slow-feed mechanism includes a small gear and a large gear plate. The small gear is connected to the front side of the right part of the power unit, and the large gear plate is connected to the front of the tool holder. The small gear is engaged with the large gear plate. When the power unit is performing cutting work, it drives the small gear to rotate. The rotation of the small gear automatically controls the rotation of the power unit under the action of the large gear plate, thereby realizing automatic downward pressure and cutting operation.

[0011] As a further preferred solution, it also includes a protective mechanism that can wrap the saw blade to prevent accidental injury to the operator. The protective mechanism includes a protective plate, a rotating shaft buckle and a saw head rod. The protective plate is rotatably connected to the tool rack, and the left sides of the front and back parts of the protective plate are connected to the rotating shaft buckles. The saw head rod is rotatably connected between the rotating shaft buckles. The saw head rod is controlled by holding the saw head rod to rotate the protective plate downward 180 degrees to release the restriction on the saw blade so that the saw blade can perform cutting work normally. Otherwise, the saw blade can be wrapped to prevent accidental injury to the operator.

[0012] As a further preferred solution, it also includes an anti-rust mechanism that can wipe the saw blade after cutting is completed. The anti-rust mechanism includes a screw, a mounting seat and a cleaning plate. The screw is connected to the left side of the power unit, and the right part of the screw is threadedly connected to the mounting seat. The front and rear sides of the mounting seat are connected to the cleaning plates. After cutting is completed, maintenance oil is poured on the saw blade, and the power unit controls the screw to rotate, so that the screw drives the mounting seat and the cleaning plate to move left and right, and the maintenance oil on the saw blade is evenly spread to prevent the saw blade from rusting and increase the service life of the saw blade.

[0013] As a further preferred solution, the fixing mechanism further includes a spring plate, and the spring plate is slidably connected to the lower side of the right front portion of the tool rack.

[0014] The beneficial effects are as follows: 1. The present invention reels the belt through a belt reel, so that the belt cooperates with the wave positioning plate to fix the cut pieces that fall off, thereby preventing the cut objects from falling into the water and facilitating the collection of the cut waste.

[0015] 2. The present invention drives the small gear to rotate when the power unit is performing cutting work. The rotation of the small gear automatically controls the rotation of the power unit under the action of the large gear disk, which can realize the effect of automatic downward cutting operation and save manpower.

[0016] 3. The present invention controls the screw to rotate through the power unit, so that the screw drives the mounting base and the cleaning plate to move left and right, and wipes the water stains on the saw blade to improve the service life of the saw blade and prevent the saw blade from rusting and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the locking mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the slow-feed mechanism and part of the guide mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the protection mechanism of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the rust prevention mechanism of the present invention.

[0025] Among them: 1_tool rack, 2_stroke handle, 3_operating handle, 4_air pump, 5_power unit, 6_saw blade, 7_fixing mechanism, 71_motor, 72_screw, 73_built-in belt conveyor, 74_sprocket, 75_chain, 76_spring plate, 8_locking mechanism, 81_belt winder, 82_long belt, 83_spring buckle, 84_wave clamping plate, 9_guide mechanism, 91_long bending frame, 92_guide wheel, 93_compression spring, 10_slow feed mechanism, 101_small gear, 102_large gear disc, 11_protection mechanism, 111_protection plate, 112_rotating shaft buckle, 113_saw head rod, 12_rust-proof mechanism, 121_screw, 122_mounting seat, 123_cleaning plate. DETAILED DESCRIPTION

[0026] The preferred technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] A pneumatic cutting saw that is convenient for underwater use, such as Figure 1 and Figure 2 As shown, it includes a tool rack 1, a travel handle 2, an operating handle 3, an air pump 4, a power unit 5, a saw blade 6, a fixing mechanism 7 and a locking mechanism 8. The tool rack 1 is connected to the travel handle 2, the lower part of the travel handle 2 is rotatably connected to the power unit 5, the saw blade 6 is connected to the output shaft end of the power unit 5, the right side of the power unit 5 is connected to the air pump 4, the right side of the power unit 5 is rotatably connected to the operating handle 3, the front side of the tool rack 1 is provided with a fixing mechanism 7, and the rear side of the tool rack 1 is provided with a locking mechanism 8.

[0028] like Figure 1 and Figure 3 As shown, the fixing mechanism 7 includes a motor 71, a screw rod 72, a built-in belt conveyor 73, a sprocket 74, a chain 75 and a spring plate 76. The right part of the tool rack 1 is connected to the motor 71, and the output shaft of the motor 71 is connected to the screw rod 72. The left end of the screw rod 72 passes through the tool rack 1. The built-in belt conveyor 73 is threadedly connected to the screw rod 72, and the output end of the built-in belt conveyor 73 is connected to the sprocket 74. A plurality of chains 75 are wound between the sprocket 74 and the lower right part of the tool rack 1. The lower right front part of the tool rack 1 is slidably connected to a spring plate 76, which can assist the chain 75 in pressing the cutting object.

[0029] like Figure 1 and Figure 4As shown, the locking mechanism 8 includes a belt winder 81, a long belt 82, a spring buckle 83 and a wave-shaped locking plate 84. The belt winder 81 is connected to the right side of the rear of the tool rack 1, and the spring buckle 83 is slidably connected to the left rear of the tool rack 1. The long belt 82 is wound between the spring buckle 83 and the belt winder 81, and the wave-shaped locking plate 84 is connected to the lower side of the rear of the tool rack 1.

[0030] When cutting underwater objects, this device can be used. First, the device is carried to the cutting area, and then the power component is controlled by holding the travel handle 2 and the operating handle 3. After the cutting object passes through the chain 75, the motor 71 and the built-in belt conveyor 73 are started. The output shaft of the motor 71 rotates to drive the screw rod 72 to rotate, so that the screw rod 72 controls the built-in belt conveyor 73 to move left and right to adapt to the size of the cutting object. At the same time, the built-in belt conveyor 73 controls the sprocket 74 to rotate, and the sprocket 74 rewinds the chain 75, so that the chain 75 is tightened to connect and fix the tool holder 1 to the cutting object, thereby assisting the cutting work. At the same time, the long belt 82 is tightened by the belt reel 81. The long belt 82 is wound up so as to cooperate with the wave positioning plate 84 to fix the cut pieces that have fallen off and prevent them from falling into the water. After the fixation is completed, the air pump 4 is started and the power unit 5 is driven by the air pump 4. The power unit 5 drives the saw blade 6 to run. The operating panel assembly is lifted so that the right part of the power unit 5 is lifted and the left part is pressed down to cut the underwater objects. After the cutting is completed, the sprocket 74 is controlled by the built-in belt conveyor 73 to loosen the chain 75. After the chain 75 becomes loose, the entire device is lifted out of the water, and the cut objects are taken out by the long belt 82. The air pump 4 is turned off to make the power unit 5 lose power and stop running.

[0031] like Figure 1 and Figure 5 As shown, it also includes a guide mechanism 9, which includes a long curved frame 91, a guide wheel 92 and a compression spring 93. The long curved frame 91 is connected to the lower part of the operating handle 3. The long curved frame 91 is rotatably connected to the guide wheels 92 on both the left and right, front and back sides. The guide wheels 92 are squeezed together with the saw blade 6, and a compression spring 93 is clamped between the long curved frame 91 and the power unit 5.

[0032] The guide mechanism 9 of the device can guide the pressed substrate. The rotation of the operating handle 3 drives the long curved frame 91 to rotate. The rotation of the long curved frame 91 guides the cutting of the saw blade 6 through the guide wheel 92, assisting the worker in the cutting operation. When the saw blade 6 is working, the guide wheel 92 can rotate to adapt to the operation of the saw blade 6.

[0033] like Figure 1 and Figure 6As shown, it also includes a slow-feed mechanism 10, which includes a small gear 101 and a large toothed disc 102. The small gear 101 is connected to the front right side of the power unit 5, and the large toothed disc 102 is connected to the front of the tool holder 1. The small gear 101 is meshed with the large toothed disc 102.

[0034] The slow-feed mechanism 10 of the device can automatically press down the saw blade 6. When the power unit 5 is cutting, it drives the small gear 101 to rotate. The rotation of the small gear 101 automatically controls the rotation of the power unit 5 under the action of the large toothed disc 102, thereby realizing the automatic downward pressing and cutting operation.

[0035] like Figure 1 and Figure 7 As shown, a protection mechanism 11 is also included, which includes a protection plate 111, a rotating shaft buckle 112 and a saw head rod 113. The protection plate 111 is rotatably connected to the tool holder 1, and the left sides of the front and rear parts of the protection plate 111 are both connected to the rotating shaft buckles 112, and the saw head rod 113 is rotatably connected between the rotating shaft buckles 112.

[0036] By using the protection mechanism 11 of the present device, the saw blade 6 can be wrapped to prevent accidental injury to the operator. By holding the saw head rod 113 and controlling the protection plate 111 to rotate downward one hundred and eighty degrees, the restriction on the saw blade 6 is released so that the saw blade 6 can perform cutting work normally. Conversely, the saw blade 6 can be wrapped to prevent accidental injury to the operator.

[0037] like Figure 1 and Figure 8 As shown, it also includes an anti-rust mechanism 12, which includes a screw 121, a mounting seat 122 and a cleaning plate 123. The screw 121 is connected to the left side of the power unit 5, and the right part of the screw 121 is threadedly connected to the mounting seat 122. The cleaning plates 123 are connected to the front and rear sides of the mounting seat 122.

[0038] By using the anti-rust mechanism 12 of the present device, the saw blade 6 can be wiped after cutting is completed. After cutting is completed, maintenance oil is poured on the saw blade 6, and the screw 121 is controlled to rotate by the power unit 5, so that the screw 121 drives the mounting seat 122 and the cleaning plate 123 to move left and right, and the maintenance oil on the saw blade 6 is evenly spread to prevent the saw blade 6 from rusting and increase the service life of the saw blade 6.

[0039] It should be understood that the above description is only for illustrative purposes and is not intended to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will fall within the scope of the claims herein.

Claims

1. A pneumatic cutting saw convenient for underwater use, characterized in that: The invention comprises a tool frame (1), a stroke handle (2), an operating handle (3), an air pump (4), a power unit (5), a saw blade (6), a fixing mechanism (7) and a locking mechanism (8); the tool frame (1) is connected to the stroke handle (2); the lower portion of the stroke handle (2) is rotatably connected to the power unit (5); the saw blade (6) is connected to the output shaft end of the power unit (5); the right side of the power unit (5) is connected to the air pump (4); the right side of the power unit (5) is rotatably connected to the operating handle (3); the front side of the tool frame (1) is provided with a fixing mechanism (7) for fixing the underwater object to be cut; the rear side of the tool frame (1) is provided with a locking mechanism (8) for locking the underwater object that has been cut and prevented from falling; The invention also includes a guide mechanism (9) capable of guiding the pressed substrate, the guide mechanism (9) including a long curved frame (91), a guide wheel (92) and a compression spring (93), the lower part of the operating handle (3) is connected to the long curved frame (91), the left and right front and back sides of the long curved frame (91) are rotatably connected to the guide wheels (92), the guide wheels (92) and the saw blade (6) are squeezed together, a compression spring (93) is clamped between the long curved frame (91) and the power unit (5), the operating handle (3) rotates to drive the long curved frame (91) to rotate, and the long curved frame (91) rotates to guide the cutting of the saw blade (6) through the guide wheel (92), thereby assisting the worker in the cutting operation.

2. A pneumatic cutting saw suitable for underwater use as claimed in claim 1, characterized in that: The fixing mechanism (7) includes a motor (71), a screw rod (72), a built-in belt conveyor (73), a sprocket (74) and a chain (75). The right part of the tool rack (1) is connected to the motor (71). The output shaft of the motor (71) is connected to the screw rod (72). The left end of the screw rod (72) passes through the tool rack (1). The screw rod (72) is threadedly connected to the built-in belt conveyor (73). The output end of the built-in belt conveyor (73) is connected to the sprocket (74). A plurality of chains ( 75), after the object to be cut passes through the chain (75), the motor (71) and the built-in belt conveyor (73) are started, the output shaft of the motor (71) rotates to drive the screw rod (72) to rotate, so that the screw rod (72) controls the built-in belt conveyor (73) to move left and right to adapt to the size of the object to be cut, and at the same time the built-in belt conveyor (73) controls the sprocket (74) to rotate, and the sprocket (74) rewinds the chain (75), so that the chain (75) is tightened to connect and fix the tool holder (1) and the object to be cut, thereby assisting the cutting work.

3. A pneumatic cutting saw suitable for underwater use as claimed in claim 2, characterized in that: The locking mechanism (8) comprises a belt reel (81), a long belt (82), a spring buckle (83) and a wave-shaped card plate (84). The right side of the rear of the tool rack (1) is connected with the belt reel (81). The left rear of the tool rack (1) is slidably connected with the spring buckle (83). The long belt (82) is wound between the spring buckle (83) and the belt reel (81). The lower side of the rear of the tool rack (1) is connected with the wave-shaped card plate (84). The long belt (82) is wound by the belt reel (81), so that the long belt (82) and the wave-shaped card plate (84) are matched to fix the cut piece that has fallen off, and prevent the cut piece from falling into the water.

4. A pneumatic cutting saw suitable for underwater use as claimed in claim 1, characterized in that: The invention also includes a slow-feed mechanism (10) capable of automatically performing a downward pressing operation of the saw blade (6). The slow-feed mechanism (10) includes a small gear (101) and a large toothed disc (102). The front side of the right portion of the power unit (5) is connected to the small gear (101), and the front portion of the tool rack (1) is connected to the large toothed disc (102). The small gear (101) is meshed with the large toothed disc (102). When the power unit (5) is performing a cutting operation, the small gear (101) is driven to rotate. The rotation of the small gear (101) automatically controls the rotation of the power unit (5) under the action of the large toothed disc (102), thereby realizing an automatic downward pressing cutting operation.

5. A pneumatic cutting saw suitable for underwater use as claimed in claim 4, characterized in that: The tool rack (1) further comprises a protective mechanism (11) capable of wrapping the saw blade (6) to prevent accidental injury to the operator. The protective mechanism (11) comprises a protective plate (111), a rotating shaft buckle (112) and a saw head rod (113). The tool rack (1) is rotatably connected to the protective plate (111). The left sides of the front and rear parts of the protective plate (111) are both connected to the rotating shaft buckle (112). The saw head rod (113) is rotatably connected between the rotating shaft buckles (112). The protective plate (111) is controlled to rotate downward by 180 degrees by holding the saw head rod (113), thereby releasing the restriction on the saw blade (6) so that the saw blade (6) can perform cutting work normally. Otherwise, the saw blade (6) can be wrapped to prevent accidental injury to the operator.

6. A pneumatic cutting saw suitable for underwater use as claimed in claim 5, characterized in that: The invention also includes an anti-rust mechanism (12) capable of wiping the saw blade (6) after cutting is completed. The anti-rust mechanism (12) includes a screw rod (121), a mounting seat (122) and a cleaning plate (123). The left side of the power unit (5) is connected to the screw rod (121), the right part of the screw rod (121) is threadedly connected to the mounting seat (122), and the front and rear sides of the mounting seat (122) are connected to the cleaning plate (123). After cutting is completed, maintenance oil is poured on the saw blade (6), and the power unit (5) controls the screw rod (121) to rotate, so that the screw rod (121) drives the mounting seat (122) and the cleaning plate (123) to move left and right, and the maintenance oil on the saw blade (6) is evenly spread, thereby preventing the saw blade (6) from rusting and improving the service life of the saw blade (6).

7. A pneumatic cutting saw suitable for underwater use as claimed in claim 2, characterized in that: The fixing mechanism (7) further comprises a spring plate (76), and the lower side of the right front portion of the tool rack (1) is slidably connected with the spring plate (76).

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