CN212444796U

CN212444796U - Intraductal horizontal cutting equipment under water

Info

Publication number: CN212444796U
Application number: CN202020632872.0U
Authority: CN
Inventors: 徐佳; 王涛; 董景国
Original assignee: Tianjin Dorian Ocean Engineering Co ltd
Current assignee: Tianjin Dorian Ocean Engineering Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-02-02
Anticipated expiration: 2030-04-23

Abstract

The utility model discloses a horizontal cutting device in an underwater pipe, which comprises a tensioning device which can be detachably fixed on the inner wall of the pipeline, wherein the tensioning device comprises a base, a bracket which is fixedly arranged on the base, a tensioning hydraulic cylinder which is fixedly arranged on the bracket, and a plurality of tensioning components which are arranged on the bracket and driven by the tensioning hydraulic cylinder, wherein the plurality of tensioning components are used for fixing the base in the center of the pipeline; and the horizontal cutting device moves on the outer circular wall of the base and is used for performing circular motion around the inner wall of the pipeline. The utility model discloses can realize fixing in the pipeline, and can cut off along pipeline circumference, be applicable to underwater steel pile and cut off.

Description

Intraductal horizontal cutting equipment under water

Technical Field

The utility model relates to a pipeline cutting tool field especially relates to an intraductal horizontal cutting equipment under water.

Background

The underwater steel pile is a pipeline which needs to be driven into an underwater ground, when the underwater steel pile is applied, hydraulic equipment is used for pressing down, the depth of the forced pressing down is about 70-90 meters away from the surface of a sea bed, and the underwater steel pile can be smoothly pressed down and installed in place without obstruction or rock stratum; after the steel piles are installed in place, the steel piles need to be cut, and the height from the steel piles to the water surface reaches the use requirement.

Current cutting device sets up the mount alone usually, erects cutting device on the mount and cuts off the pipeline, and current mode needs to cut the piling bar pipeline behind the mount alone externally when the cutting, and the mount alone externally needs installation space, and it is inconvenient to install on the sea.

Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art not enough, the utility model aims to provide an intraductal horizontal cutting equipment under water can realize fixing in the pipeline, and can cut along pipeline circumference and cut off, is applicable to the turn-up to the piling bar in the piling bar pipeline and cuts.

The technical scheme of the utility model as follows:

the underwater pipe horizontal cutting equipment comprises a tensioning device detachably fixed on the inner wall of a pipeline, wherein the tensioning device comprises a base, a support fixedly arranged on the base, a tensioning hydraulic cylinder fixedly arranged on the support, and a plurality of tensioning assemblies arranged on the support and driven by the tensioning hydraulic cylinder, wherein the plurality of tensioning assemblies are used for fixing the base at the center of the pipeline;

and the horizontal cutting device moves on the outer circular wall of the base and is used for performing circular motion around the inner wall of the pipeline.

Furthermore, the tensioning assembly comprises a first connecting rod hinged to the support, a tensioning arm hinged between two ends of the first connecting rod and a supporting boss connected to the tail end of the first connecting rod, and the tensioning arm is hinged to an output shaft of the tensioning hydraulic cylinder.

Further, the tensioning assembly further comprises a second connecting rod hinged to the support, a tensioning rod is hinged to the second connecting rod, and the supporting boss is fixedly arranged on the tensioning rod.

Furthermore, a friction part used for increasing friction force is arranged on one surface, facing the inner wall of the pipeline, of the support boss.

Further, the support boss is provided with two, two the support boss is located respectively the both ends of tensioning rod.

Furthermore, the horizontal cutting device comprises a chain sleeved on the base, a crawling mechanism positioned on the surface of the base, a power mechanism arranged on the crawling mechanism, a chain tensioning mechanism arranged on the crawling mechanism, a mechanical arm arranged on the crawling mechanism, and a cutting mechanism fixedly connected to the mechanical arm and used for cutting the inner wall of the pipeline;

the crawling mechanism is provided with a plurality of groups of chain wheels, the crawling mechanism is powered by a power mechanism, and the crawling mechanism is matched with the chain through the plurality of groups of chain wheels so as to be driven by the power mechanism to move along the surrounding direction of the chain;

the chain tensioning mechanism comprises a hydraulic cylinder supporting plate fixedly connected to the crawling mechanism, a hydraulic cylinder vertically fixed on the hydraulic cylinder supporting plate and with a piston rod penetrating through the hydraulic cylinder supporting plate, a chain wheel seat fixedly connected to the piston rod of the hydraulic cylinder and provided with a groove, and a movable chain wheel positioned in the groove of the chain wheel seat and rotatably installed on the chain wheel seat; the chain is sleeved on the movable chain wheel.

Further, the crawling mechanism comprises frame plates positioned on two sides, front wheel shafts penetrating through the frame plates on the two sides and rotatably connected to the front ends of the frame plates on the two sides, front wheels rotatably connected to two ends of the front wheel shafts, front end chain wheels positioned between the frame plates on the two sides and fixedly connected to the front wheel shafts, rear wheel shafts penetrating through the frame plates on the two sides and rotatably connected to the rear ends of the frame plates on the two sides, rear wheels rotatably connected to two ends of the rear wheel shafts, rear end chain wheels positioned between the frame plates on the two sides and fixedly sleeved on the rear wheel shafts, a transmission shaft penetrating through the frame plates on the two sides and rotatably connected to the upper parts of one sides of the frame plates on the two sides, driving chain wheels positioned between the frame plates on the two sides and fixedly sleeved on the; the chain is sequentially sleeved on the front-end chain wheel, the driving chain wheel and the rear-end chain wheel.

Further, power unit is including setting up on the mechanism of crawling and drive transmission shaft pivoted second grade speed reduction subassembly, the speed reducer mount pad of fixed connection in one side frame board outside, fixed connection on the speed reducer mount pad and the speed reducer that output shaft and second grade speed reduction subassembly are connected, the power mount pad of connection on the speed reducer, fixed connection on the power mount pad and with speed reducer output shaft fixed connection's power supply.

Compared with the prior art, the horizontal cutting equipment in the underwater pipe provided by the utility model can realize the fixation in the pipeline, and the circumferential direction of the pipeline is cut off in the pipeline through the horizontal cutting device, so that the horizontal cutting equipment is suitable for cutting the steel pile in the steel pile pipeline; when being applied to ordinary pipeline simultaneously, can rock in step with the pipeline to avoid the water pipe to rock and lead to the cutting plane not enough level and smooth and influence cutting effect, the water pipe inner wall supports fixedly simultaneously, is difficult for breaking the water pipe extrusion.

Drawings

Fig. 1 is a front view of an embodiment of the horizontal cutting apparatus of the present invention in an underwater pipe;

fig. 2 is a schematic structural diagram of an embodiment of the horizontal cutting device in an underwater pipe according to the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic structural view of a horizontal cutting device of an embodiment of the horizontal cutting device in an underwater pipe according to the present invention;

figure 5 is a cross-sectional view of a horizontal cutting apparatus of an embodiment of the present invention of a horizontal cutting device in an underwater pipe;

fig. 6 is a schematic view of a partial structure of a horizontal cutting device according to an embodiment of the present invention;

fig. 7 is a side view of a horizontal cutting device of an embodiment of the horizontal cutting apparatus of the present invention in an underwater pipe;

fig. 8 is a sealing schematic diagram of a horizontal cutting device according to an embodiment of the horizontal cutting apparatus in an underwater pipe of the present invention.

The reference numbers in the figures: 1. a horizontal cutting device; 2. a chain; 3. a crawling mechanism; 31. a frame plate; 32. a support bar; 33. a front wheel axle; 34. a front wheel; 35. a front end sprocket; 36. a rear wheel axle; 37. a rear wheel; 38. a rear end sprocket; 39. a drive shaft; 310. a drive sprocket; 4. a power mechanism; 41. a secondary speed reduction assembly; 42. a bull gear; 43. a power shaft; 44. a pinion gear; 45. a speed reducer mounting base; 46. a speed reducer; 47. a hydraulic motor mount; 48. a hydraulic motor; 49. a sealing groove; 410. a seal ring; 411. an end cap; 5. a chain tensioning mechanism; 51. a hydraulic cylinder support plate; 52. a hydraulic cylinder; 53. a sprocket seat; 54. a movable sprocket shaft; 55. a movable sprocket; 56. a boss; 57. a waist-shaped hole; 58. fixing a tension wheel shaft; 59. fixing a tension wheel; 6. a mechanical arm; 61. adjusting the flange seat; 62. a support pillar; 63. an installation table; 64. a connecting rod; 65. a clamping block; 7. a cutting mechanism; 71. cutting the torch; 72. a high pressure water pipe; 73. a sand pipe; 74. a protective sleeve; 200. a tensioning device; 210. a base; 211. blocking edges; 220. a support; 230. tensioning a hydraulic cylinder; 240. a tension assembly; 241. a first link; 242. a tensioning arm; 243. supporting the boss; 244. a second link; 245. a tension rod; 250. positioning a groove; 251. a through hole; 260. a friction portion.

Detailed Description

The utility model provides an intraductal horizontal cutting equipment under water, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following reference is made to the attached drawing and the example is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, a horizontal cutting device in an underwater pipe for cutting the inside of the pipe, the pipe in this embodiment is vertically arranged, so that the extending direction (axial direction) of the pipe is a vertical direction, which is also an axial direction, as shown in fig. 1, includes a tension device 200 detachably fixed on the inner wall of the pipe, a horizontal cutting device 1 arranged on the tension device 200 and used for making a circular motion around the inner wall of the pipe, and the horizontal cutting device 1 moves around the inner circumference of the pipe and cuts the pipe.

Through this equipment, this scheme can realize fixing in the pipeline, realizes cutting off pipeline circumference inside the pipeline through horizontal cutting device, is applicable to and cuts the piling bar in the piling bar pipeline, avoids the outside mount alone among the prior art to need installation space, installs inconvenient shortcoming on the sea. When being applied to ordinary pipeline, can rock in step with the pipeline to avoid the water pipe to rock and lead to the cutting plane not enough level and smooth and influence cutting effect, the water pipe inner wall supports fixedly simultaneously, is difficult for breaking the water pipe extrusion.

As shown in fig. 1 and 2, the tensioning device 200 includes a base 210, the base 210 in this embodiment is cylindrical, a rib 211 is disposed at a lower end of the base 210, the rib 211 protrudes out of an outer surface of the base 210, the rib 211 can protect the horizontal cutting device 1, and the horizontal cutting device 1 slides down and falls off the base 210, so that horizontal movement of the equipment on a circumference of the outer surface of the base 210 is ensured. A bracket 220 is fixedly connected to the upper surface of the base 210 through a screw, a tensioning hydraulic cylinder 230 is fixedly connected to the upper surface of the bracket 220 through a screw, a plurality of tensioning assemblies 240 driven by the tensioning hydraulic cylinder 230 are arranged on the bracket 220, the tensioning assemblies 240 in this embodiment are provided with three groups, the three groups of tensioning assemblies 240 are uniformly distributed on the bracket 220 along the circumference with the bracket 220 as the center, and the tensioning assemblies 240 have the following specific structure: comprises a first connecting rod 241 hinged on the bracket 220, a tensioning arm 242 hinged on the outer wall of the first connecting rod 241, a supporting boss 243 connected on the end of the first connecting rod 241, and the tensioning arm 242 is hinged on the output shaft of the tensioning hydraulic cylinder 230. By retracting the tensioning hydraulic cylinder 230 downwards, the tensioning arm 242 is driven to push the first connecting rod 241 to rotate downwards, and the first connecting rod 241 drives the supporting boss 243 to expand outwards and abut against the inner wall of the pipeline, so that the tensioning device 200 is firmly fixed in the pipeline. The base 210 is centered within the duct by three sets of tensioning assemblies 240.

For the stability of improvement support, tensioning assembly 240 is still including articulating second connecting rod 244 on the support 220, it has tensioning rod 245 to articulate on the second connecting rod 244, it is fixed to set up to support boss 243 tensioning rod 245 is last, first connecting rod 241 articulates on tensioning rod 245, through first connecting rod 241 and second connecting rod 244 parallel arrangement like this, makes the atress of supporting boss 243 at the pipeline inner wall divide equally more to realize the stable support to tensioning rod 245, make overspeed device tensioner 200 stably fix in the pipeline. The tensioning rod 245 is provided with two supporting bosses 243 which are respectively located at the upper end and the lower end of the tensioning rod 245, so that the upper supporting boss 243 and the lower supporting boss 243 are abutted against the inner wall of the pipeline, and the upper supporting boss and the lower supporting boss are abutted against the inner wall of the pipeline, so that the fixing is more stable.

The structure adopts the single tensioning hydraulic cylinder 230, and realizes that the single tensioning hydraulic cylinder 230 is supported and fixed at six points by the principle of the connecting rod device, improves the six-point supporting structure which can be realized by the original two oil cylinders, and greatly saves cost and space.

As shown in fig. 3, the support boss 243 can be slidably disposed on the tension rod 245, and the specific structure is as follows: offer constant head tank 250 on the support boss 243, constant head tank 250 cover is established tensioning rod 245 is last and can slide along the extending direction of tensioning rod 245, a plurality of screw holes have been offered side by side in the extending direction of tensioning rod 245, corresponding through-hole 251 has been seted up on the support boss 243, wears to establish the screw in the through-hole 251 and fixes in the screw hole, realizes the adjustment to supporting the boss 243 position in the screw hole of difference.

As shown in fig. 3, a friction portion 260 is disposed on one surface of the support boss 243 facing the inner wall of the pipe, the friction portion 260 can increase the friction force between the support boss 243 and the surface of the pipe wall, and the friction portion 260 is a plurality of bosses disposed at intervals. The plurality of bosses form a tooth-shaped structure, so that the surface of the support boss 243 becomes rough, which increases friction force when the support boss 243 abuts against the inner wall of the pipe, and simultaneously enables the whole equipment to bear large force without sliding, thereby realizing stable fixation.

As shown in fig. 4 and 5, the horizontal cutting device 1 includes a chain 2 sleeved on a base 210, a crawling mechanism 3 is abutted on the surface of the outer circle of the base 210, a power mechanism 4 is connected to the crawling mechanism 3, the power mechanism 4 provides power for the crawling mechanism 3, a chain tensioning mechanism 5 is connected to the crawling mechanism 3, a mechanical arm 6 is connected to the front end of the crawling mechanism 3, and a cutting mechanism 7 is fixedly connected to the mechanical arm 6.

As shown in fig. 5 and 6, the climbing mechanism 3 includes frame plates 31 at two sides, the frame plates 31 at two sides are arranged side by side along the axial direction of the base 210, as shown in fig. 3, a plurality of support rods 32 are arranged between the frame plates 31 at two sides, two ends of each support rod 32 are respectively fixed on the inner side surfaces of the frame plates 31 at two sides by screws, and the support rods 32 stabilize and fix the frame plates 31 at two sides. Front wheel shafts 33 penetrate through the front ends of the frame plates 31 on the two sides, the front wheel shafts 33 are clamped in bearing seats on the frame plates 31 on the two sides so as to be rotatably connected to the front ends of the frame plates 31 on the two sides, front wheels 34 are rotatably connected to the two ends of the front wheel shafts 33 through bearings, front end chain wheels 35 are sleeved on the front wheel shafts 33, and the front end chain wheels 35 are fixed on the front wheel shafts 33 through keys and can rotate relative to the frame plates 31 on the two sides along with the front wheel shafts 33. A rear wheel shaft 36 penetrates through the rear ends of the two frame plates 31, the rear wheel shaft 36 is inserted into a bearing seat on the two frame plates 31 so as to be rotatably connected to the rear ends of the two frame plates 31, rear wheels 37 are rotatably connected to both ends of the rear wheel shaft 36 through bearings, a rear sprocket 38 is sleeved on the rear wheel shaft 36, and the rear sprocket 38 is fixed on the rear wheel shaft 36 through a key and can rotate relative to the two frame plates 31 after the rear wheel shaft 36 rotates. The frame plate 31 is in contact with the surface of the base 210 by the front wheels 34 and the rear wheels 37, and is movable along the surface of the base 210 by the front wheels 34 and the rear wheels 37. Run through on the one end upper portion of both sides frame board 31 has transmission shaft 39, transmission shaft 39 is located between the frame board 31 of both sides and rotates through the bearing frame and connect on frame board 31 of both sides, the cover is equipped with drive sprocket 310 on transmission shaft 39, drive sprocket 310 passes through the key to be fixed on transmission shaft 39, chain 2 overlaps in proper order and establishes at front end sprocket 35, on drive sprocket 310 and rear end sprocket 38, and encircle on base 210, it just can use chain 2 as the guide rail to rotate drive sprocket 310 when transmission shaft 39 rotates, drive the whole orbit motion of laying of crawling mechanism 3 along chain 2.

The front-end chain wheel 35, the driving chain wheel 310 and the rear-end chain wheel 38 adopt chain wheels with the same standard row number, generally adopt single-row and double-row chain wheels, the row number of the chain 2 is matched with the chain wheels, but in the embodiment, three rows of chain wheels are adopted, the chain 2 matched with the three rows of chain wheels also adopts three rows of chains, and the friction force between the chain 2 and the base 210 is increased by matching the three rows of chains 2 with the three rows of chain wheels, so that the chain 2 can be more firmly fixed on the surface of the base 210; when the pipeline is cut, the chain 2 can bear large tensile force, and the three rows of chains can not be broken due to the thinness of the chain 2 under the large tensile force.

The front end chain wheel 35, the driving chain wheel 310 and the rear end chain wheel 38 are fixed in the middle of the support frame plates 31 on the two sides, and a plurality of groups of chain wheels formed by the front end chain wheel 35, the driving chain wheel 310 and the rear end chain wheel 38 are positioned in the middle, so that the front wheel 34 and the rear wheel 37 can walk uniformly under stress, and can not deviate due to the influence of cutting force in the cutting process; the chain also can adopt many to establish side by side and establish base 210 surface to and set up the multiunit sprocket with many chain phase-matchs, the multiunit chain is established the in-process at the cover and is guaranteed every parallel, otherwise can lead to crawling the mechanism unstable at the in-process of walking, can appear the card die or break away from the chain, only adopts a three rows of chains in the intermediate position in this embodiment, is favorable to the chain to establish fast the cover and establishes base 210 surface, and avoids appearing using many chains and the unstable phenomenon that leads to.

As shown in fig. 4, 6 and 7, the power mechanism 4 includes a second-stage speed reduction assembly 41 connected to the crawling mechanism 3 and driving the transmission shaft 39 to rotate, in order to realize large-thickness cutting, the walking speed needs to be slow, the second-stage speed reduction assembly 41 reduces the speed of the transmission shaft 39, the crawling mechanism 3 slows down the crawling speed, and the large-thickness pipeline is conveniently cut. The specific structure of the second-stage speed reduction assembly 41 comprises a large gear 42 fixedly connected to the transmission shaft 39 through a key, a power shaft 43 is rotatably connected to the frame plates 31 on the two sides through bearing seats, a small gear 44 is fixedly connected to the power shaft 43 through a key, the small gear 44 is meshed with the large gear 42 and is driven through the small gear 44, one end of the power shaft 43 penetrates through the frame plate 31 on one side, a speed reducer mounting seat 45 is fixedly connected to the outer side of the frame plate 31 through which the power shaft 43 penetrates and is fixedly connected with a screw, a speed reducer 46 is connected to the speed reducer mounting seat 45, an output shaft of the speed reducer 46 is connected with the power shaft 43 of the second-stage speed reduction assembly 41 through a coupling, the speed reducer 46 in the embodiment adopts a worm gear speed reducer, a power mounting seat is fixedly connected with the screw on the speed reducer 46, a power source, the internal combustion engine, the embodiment works under the slow speed environment, therefore the power source adopts the hydraulic motor 48, the hydraulic motor 48 also has large transmission power, and the output torque can be adjusted according to the pressure; the running speed of the hydraulic motor 48 can be freely adjusted according to the flow, and the running is stable at a low speed; the hydraulic motor 48 has overload protection capability, and automatic protection cannot be realized by adopting a motor to drive overload; the hydraulic motor 48 is flexible and convenient in transmission arrangement, a speed reducing device can be designed and arranged according to the actual required torque, the larger the speed ratio is, the larger the torque is, and the effect of larger torque output is achieved; the hydraulic motor 48 is of a pressure working type and needs a closed volume chamber to work, so that the hydraulic motor can realize a self-sealing function, and can be installed and used without limitation no matter underwater or land work. The power mounting seat is a corresponding hydraulic motor mounting seat 47, the torque of the hydraulic motor 48 is set to be 0-33760 N.m and adjustable, the torque is 6330 and 33760 N.m during general use and can be adjusted at will, the speed of the hydraulic motor 48 is set to be 0-400 r/min and is adjusted at will within 20 r/min-400 r/min during general use, and the rotating shaft of the hydraulic motor 48 is fixedly connected with the output shaft of the speed reducer 46 through a coupling. The hydraulic motor 48 rotates, the power shaft 43 is driven to rotate after the speed is reduced by the speed reducer 46, the power shaft 43 drives the power shaft 43 to rotate through the speed reduction of the secondary speed reduction assembly 41, the driving sprocket 310 on the power shaft 43 is driven to rotate, the chain 2 is fixed on the surface of the base 210 due to the tensile force and the friction force, the driving sprocket 310 moves along the chain 2, and therefore the whole crawling mechanism 3 is driven to move along the outer surface of the base 210.

As shown in fig. 7 and 8, the scheme can work under water, a sealing groove 49 is formed in the surface, which is in contact with a hydraulic motor 48, of a hydraulic motor mounting seat 47, a sealing ring 410 is arranged in the sealing groove, a sealing groove 49 is formed in the surface, which is in contact with a speed reducer 46, of the hydraulic motor mounting seat 47, a sealing ring 410 is arranged in the sealing groove 49, an end cover 411 used for sealing an opening of the speed reducer 46 is arranged at the tail of the speed reducer 46, a sealing groove 49 is formed in the surface, which is in contact with the speed reducer 46, of the end cover 411, and. The output ends of the speed reducer 46 and the hydraulic motor are sealed and waterproof, and normal underwater cutting is realized.

As shown in fig. 4, 5, and 6, the chain tensioning mechanism 5 includes a hydraulic cylinder support plate 51 fixedly connected to the frame plates 31 on two sides by screws, the hydraulic cylinder support plate 51 is located between the frame plates 31 on two sides, a hydraulic cylinder 52 is vertically fixed on the hydraulic cylinder support plate 51 by screws, a piston rod of the hydraulic cylinder 52 penetrates through the hydraulic cylinder support plate 51, a sprocket seat 53 is fixedly connected to the end of the piston rod, a groove is provided in the middle of the sprocket seat 53, a movable sprocket shaft 54 is rotatably connected to the groove of the sprocket seat 53 by a bearing, a movable sprocket 55 is fixed on the movable sprocket shaft 54 by a key, and the movable sprocket 55 is provided as three rows of sprockets in this embodiment.

As shown in fig. 6 and 4, bosses 56 are integrally formed at two ends of the movable sprocket shaft 54, the bosses 56 at two sides penetrate through two sides of the sprocket seat 53, as shown in fig. 4, kidney-shaped holes 57 are formed in the frame plates 31 at two sides opposite to the bosses 56, the forming direction of the kidney-shaped holes 57 is along the extension direction of the piston rod of the hydraulic cylinder 52, the bosses 56 are embedded in the kidney-shaped holes 57 and can move in the kidney-shaped holes 57, and the kidney-shaped holes 57 are the movement orientation of the sprocket seat 53, so that the movable sprocket 55 is prevented from dragging the sprocket seat 53 to change the direction in the stress process.

As shown in fig. 5 and 6, a fixed tension wheel shaft 58 is rotatably connected to the middle position of the frame plates 31 on the two sides through a bearing seat, the fixed tension wheel shaft 58 is located between the frame plates 31 on the two sides, a fixed tension wheel 59 is fixedly connected to the fixed tension wheel shaft 58 through a key, and the chain 2 is sleeved on the movable chain wheel 55 after being sleeved on the fixed tension wheel 59, so that the tension force of the chain 2 can be increased, and the chain wheel on the crawling mechanism 3 is subjected to uniform tension force.

The tensioning force can be adjusted by controlling oil inlet and outlet of the hydraulic cylinder 52 through hydraulic tensioning, the hydraulic tensioning is adopted, the tension of the hydraulic cylinder 52 is adjustable within the range of 0-1600 kg, the hydraulic tensioning is generally set within the range of 800-1600 kg during normal use, larger tensioning force is generated, the tensioning force is stable, the crawling mechanism 3 is still tightly attached to the surface of the base 210 under the condition that large cutting force is generated by cutting materials with large thickness, the position of the crawling mechanism 3 is not deviated, the cutting opening of a pipeline is smooth, and the cutting error is guaranteed within 1 mm.

As shown in fig. 4 and 6, the robot arm 6 includes adjusting flange seats 61 fixedly connected to the frame plates 31 at both sides, the adjusting flange seats 61 at two sides are embedded with support columns 62 in a clamping way, the support columns 62 penetrate through the frame plates 31 at two sides, the support columns 62 can slide in the adjusting flange seats 61, when the supporting column 62 is slid to a proper position, the supporting column 62 is fixed by adjusting the screw tightening of the flange seat 61, mounting platforms 63 are integrally formed at one end of the support column 62, a central hole is provided between the mounting platforms 63, a connecting rod 64 is inserted in the hole of the mounting table 63 in a clamping way, a threaded hole penetrating through the hole is formed in the mounting table 63, the connecting rod 64 is fixed on the mounting table 63 through a screw, at the end of the connecting rod 64 is welded a clamping block 65, in this embodiment the clamping block 65 is an optical axis clamping ring which is screwed down by screws to clamp the strip clamp. The clamp block 65 may be a dedicated clamp designed according to the shape of the clamped object.

As shown in fig. 4 and 5, the cutting mechanism 7 includes a cutting torch 71 fixedly connected to the robot arm 6, a high-pressure water pipe 72 connected to the cutting torch 71, and a sand pipe 73 connected to the cutting torch 71. The high-pressure water sand cutter cutting machine (not shown in the figure) is connected with a high-pressure water sand cutter cutting machine through a high-pressure water pipe 72 and a sand pipe 73, so that high-pressure water and sand of the high-pressure water sand machine are mixed by a cutting gun 71 and then sprayed on a pipeline to cut the pipeline, a protective sleeve 74 is arranged at the front end of the cutting gun 71, and when sand grains are sprayed on the pipe wall in a high-pressure cutting process, a part of the sand grains splashed out can be prevented, if the protective sleeve 74 is not adopted for protection, the splashed high-pressure water sand grains with the sand grains can be sprayed on equipment and peripheral facilities, and meanwhile, personnel can be injured to a certain extent, and the protective sleeve 74 is adopted, so that the splashed high-pressure water sand grains with the sand grains can be prevented; thereby protecting equipment and personnel.

The novel processing technology of the high-pressure water sand belongs to a cold cutting technology, and is widely applied to the material processing field of industries such as aerospace, nuclear industry, military industry, naval vessels, nonferrous metals, ceramics, glass and the like due to the characteristics of no oxidation, no thermal cracking deformation, no temperature rise phase change, no rapid heating and cold brittleness, narrow cutting seam, high precision and the like of the material, and particularly brings great convenience in the processing of materials such as cutting titanium plates, geometric cavities of the titanium materials, multidimensional curve surfaces of the titanium materials, nickel-based alloys, stainless steel, high-strength composite materials, aviation carbon fibers and the like. Because the cutting gun 71 sprays the water sand, which belongs to the cold cutting technology, the pipeline can be conveniently cut underwater. The cutting mechanism 7 may also be a wheel cutter, laser cutter or torch cutter if used in a normal environment.

In conclusion, the pipeline can be fixed in the pipeline, the pipeline can be circumferentially cut off in the pipeline through the horizontal cutting device, the horizontal cutting device is suitable for cutting the steel piles in the steel pile pipeline, and the steel piles can be conveniently pressed down; when this device was applied to ordinary pipeline, can rock in step with the pipeline to avoid the water pipe to rock and lead to the cutting plane not enough level and smooth and influence cutting effect, the water pipe inner wall supports fixedly simultaneously, is difficult for breaking the water pipe extrusion.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. The underwater pipe horizontal cutting equipment is characterized by comprising a tensioning device detachably fixed on the inner wall of a pipeline, wherein the tensioning device comprises a base, a support fixedly arranged on the base, a tensioning hydraulic cylinder fixedly arranged on the support, and a plurality of tensioning assemblies arranged on the support and driven by the tensioning hydraulic cylinder, wherein the tensioning assemblies are used for fixing the base at the center of the pipeline;

2. The underwater pipe horizontal cutting apparatus of claim 1, wherein the tensioning assembly comprises a first link hinged to the bracket, a tensioning arm hinged between two ends of the first link, a support boss connected to an end of the first link, the tensioning arm hinged to an output shaft of the tensioning hydraulic cylinder.

3. An underwater horizontal pipe cutting apparatus as claimed in claim 2 wherein the tensioning assembly further comprises a second link hinged to the support, a tensioning bar hinged to the second link, the support boss being fixedly disposed on the tensioning bar.

4. The underwater in-pipe horizontal cutting apparatus of claim 3, wherein a friction portion for increasing friction is provided on a face of the support boss facing an inner wall of the pipe.

5. The underwater in-pipe horizontal cutting apparatus of claim 3, wherein there are two of said support bosses, two of said support bosses being located at both ends of said tension rod, respectively.

6. The underwater pipe horizontal cutting device as claimed in claim 1, wherein the horizontal cutting device comprises a chain sleeved on the base, a crawling mechanism located on the surface of the base, a power mechanism arranged on the crawling mechanism, a chain tensioning mechanism arranged on the crawling mechanism, a mechanical arm arranged on the crawling mechanism, and a cutting mechanism fixedly connected to the mechanical arm and used for cutting the inner wall of the pipeline;

7. The underwater pipe horizontal cutting apparatus as claimed in claim 6, wherein the crawling mechanism comprises frame plates at both sides, a front wheel shaft penetrating through the frame plates at both sides and rotatably connected to front ends of the frame plates at both sides, front wheels rotatably connected to both ends of the front wheel shaft, a front sprocket fixedly connected to the front wheel shaft and positioned between the frame plates at both sides, a rear wheel shaft penetrating through the frame plates at both sides and rotatably connected to rear ends of the frame plates at both sides, rear wheels rotatably connected to both ends of the rear wheel shaft, a rear sprocket fixedly sleeved on the rear wheel shaft and positioned between the frame plates at both sides, a driving sprocket rotatably connected to an upper portion of one side of the frame plates at both sides and positioned between the frame plates at both sides and fixedly sleeved on the driving sprocket, and a plurality of support bars fixedly connected between the frame plates at both sides; the chain is sequentially sleeved on the front-end chain wheel, the driving chain wheel and the rear-end chain wheel.

8. The underwater pipe horizontal cutting device according to claim 7, wherein the power mechanism comprises a second speed reduction assembly disposed on the crawling mechanism and driving the transmission shaft to rotate, a speed reducer mounting seat fixedly connected to an outer side of a frame plate on one side, a speed reducer fixedly connected to the speed reducer mounting seat and having an output shaft connected to the second speed reduction assembly, a power mounting seat connected to the speed reducer, and a power source fixedly connected to the power mounting seat and fixedly connected to an output shaft of the speed reducer.