CN210451183U

CN210451183U - Large-diameter pipeline girdling toothless saw fixing device

Info

Publication number: CN210451183U
Application number: CN201920924612.8U
Authority: CN
Inventors: 冯维斌; 武秋红; 杜军科; 张志鹏
Original assignee: MCC Tiangong Group Tianjin Corp Ltd
Current assignee: MCC Tiangong Group Tianjin Corp Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-05-05
Anticipated expiration: 2029-06-19

Abstract

The utility model provides a large-diameter pipeline girdling toothless saw fixing device, which comprises a sleeve, a bracket and a base, wherein the sleeve is of a cylindrical structure and is wound on the outer wall of a pipeline, and the width of the sleeve is greater than that of the base; the cross section of the bracket is of a triangular structure, the plane of the lower end of the bracket is fixedly connected with the sleeve, and the top surface of the bracket is hinged with the lower end surface of the base; the base is perpendicular to the central axis of the sleeve, one end of the base is provided with a handle, the other end of the base is provided with a motor, the toothless saw is fixed on one side of the base, which is close to the handle, and the output end of the motor drives the toothless saw to rotate through belt transmission; the distance between the bracket and one side of the handle is greater than that between the bracket and one side of the handle, and the handle is perpendicular to the base. The utility model discloses fixing device is adapted to major diameter pipeline circular cutting, and simple structure, convenient to use and easily operation can obtain smooth annular cutting plane, cut efficiently, and safety and pollution-free.

Description

Large-diameter pipeline girdling toothless saw fixing device

Technical Field

The utility model belongs to the technical field of the piping erection, especially, relate to a major diameter pipeline girdling toothless saw fixing device.

Background

The oil return pipeline of a hydraulic and lubricating system of a large-scale rolling mill is generally large in diameter and thick in wall thickness, the interior of the pipeline is required to reach certain cleanliness, and the pipeline is cut during blanking. If a cutting torch or a plasma method is adopted, the blown oxidation slag is adhered to the inner wall of the pipeline to pollute the interior of the pipeline, and the cross sections of the notches are uneven, so that the welding quality is influenced. If the handheld cutting machine is adopted, the power is low, the cutting speed is low, the loss of the cutting piece is large, the time consumption is long due to the fact that the cutting machine needs to be held manually for a long time, the physical consumption of personnel is large, the shaking freedom degree is high due to the fact that the cutting machine cannot be fixed, and the flatness of a cut cannot be guaranteed.

Disclosure of Invention

The utility model discloses to the problem that exists among the above-mentioned prior art, the purpose provides a major diameter pipeline girdling toothless saw fixing device, is particularly useful for the pipeline that the diameter is greater than 500mm, solves among the prior art that the incision quality is not good, the cutting inefficiency and the poor technical problem of flexibility.

The above technical purpose of the utility model is realized through following technical scheme:

a large-diameter pipeline girdling toothless saw fixing device comprises a sleeve, a bracket and a base, wherein the sleeve is of a cylindrical structure and is wound on the outer wall of a pipeline, and the width of the sleeve is greater than that of the base; the cross section of the support frame is of a triangular structure, the lower end plane of the support frame is fixedly connected with the sleeve, and the top surface of the support frame is hinged with the lower end surface of the base; the base is perpendicular to the central axis of the sleeve, a handle is arranged at one end of the base, a motor is arranged at the other end of the base, the toothless saw is fixed on one side of the base, which is close to the handle, and the output end of the motor drives the toothless saw to rotate through belt transmission; the support frame is in the base is greater than apart from the distance of handle one side, the handle perpendicular to the base sets up.

Further, the support frame is arranged in parallel with the central axis of the sleeve.

Further, the triangle is an isosceles triangle, and the angle of the vertex angle of the triangle is 30-60 degrees.

Furthermore, the sleeve pipe is provided with an opening, the opening is parallel to the supporting frame and is arranged in an alignment mode, and a fastening piece is arranged at the opening.

Furthermore, the output end of the motor is provided with a driving wheel, a driven wheel is arranged on the same side of the driving wheel, the driving wheel drives the driven wheel to rotate through the belt, and the driven wheel drives the toothless saw to rotate through a rotating shaft arranged between the driven wheel and the toothless saw.

Furthermore, the driving wheel and the toothless saw are respectively arranged on two sides of the base.

The first cover body is arranged at the upper end part of the toothless saw, and the appearance structure of the first cover body is matched with the toothless saw; the belt is embedded in the second cover body, and the appearance structure of the second cover body is matched with the driving wheel and the driven wheel.

Furthermore, first supports are arranged on two sides of the rotating shaft, one end of each first support is fixed to the upper end face of the base, and the other end of each first support is fixed to the outer wall of the first cover body.

Furthermore, a second support is arranged on one side, away from the toothless saw, of the base, one end of the second support is fixed on the upper end face of the base, and the other end of the second support is fixed on the outer wall of the second cover body.

Further, the second cover body comprises an inner shell and a shell cover, the inner shell is fixedly connected with the second support, and the shell cover is detachably connected with the inner shell.

Compared with the prior art, the fixing device designed by the utility model is especially suitable for pipelines with the diameter larger than 500mm, and has simple structure, convenient use and flexible operation; the method can obtain a flat annular cutting surface, and has the advantages of good incision quality, high cutting efficiency, safety and no pollution.

Drawings

Fig. 1 is a side perspective view of a large diameter pipe girth cutting toothless saw fixture according to an embodiment of the present invention;

fig. 2 is another side perspective view of a large diameter pipe ring cutting toothless saw fixture in accordance with an embodiment of the present invention;

fig. 3 is a side view of a large diameter pipe girth cutting toothless saw fixture in accordance with an embodiment of the present invention;

fig. 4 is a perspective view of a fixation device with a sleeve removed according to an embodiment of the present invention;

fig. 5 is an enlarged view of a according to an embodiment of the present invention;

fig. 6 is a perspective view of a support frame according to an embodiment of the present invention;

fig. 7 is a perspective view of a second housing with an outer cover removed according to an embodiment of the present invention;

fig. 8 is a schematic view of a matching structure of the first bracket and the first cover according to an embodiment of the present invention;

fig. 9 is a schematic view of a matching structure of the second bracket and the second cover according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a second bracket according to an embodiment of the present invention;

fig. 11 is a perspective view of the fixing device and the pipeline according to an embodiment of the present invention.

In the figure:

1. sleeve 2, support frame 201 and tripod

202. Shaft sleeve 203, pin shaft 204 and backstop gasket

3. Fastener 4, base 5, motor

6. Rotating shaft 7, first support 8 and first cover body

9. Toothless saw 10, second bracket 1001, and mounting surface

1002. Mounting surface 11, second cover 12, drive wheel

13. Driven wheel 14, belt 15 and handle

16. Duct 17, datum line

Detailed Description

The invention will be further explained with reference to the following examples and drawings:

a large-diameter pipeline girdling toothless saw fixing device is shown in figures 1-3 and comprises a sleeve 1, a support frame 2 and a base 4, wherein the sleeve 1 is of a cylindrical structure and is fixed on the outer wall of a pipeline 16 in a surrounding mode, and the width of the sleeve 1 is larger than that of the base 4. The cross section of support 3 is the triangle-shaped structure, and the lower extreme plane of support 3 and the lateral wall of sleeve pipe 1 pass through two rows of four bolt fixed connection, and lie in sleeve pipe 1's outer wall middle part and set up, and the top surface of support 1 is articulated with the lower terminal surface of base 4. The base 4 sets up with the central axis of sleeve pipe 1 is perpendicular, and the one end of base 4 is equipped with handle 15, and the other end of base 4 is equipped with motor 5, and toothless saw 9 is fixed in the one side that base 4 is close to handle 15, and the transmission of motor 5 output is carried out rotary work with drive toothless saw 9 through belt 14. The length of the outermost end of the support frame 2 on the side, away from the handle 15, of the base 4 is greater than the length of the outermost end on the side, away from the handle 15, of the base 4, and the handle 15 is perpendicular to the base 4.

Specifically, as shown in fig. 1-2, the inner diameter of the casing 1 is adapted to the pipe 16 for fixing the toothless saw 9 and the whole fixing device on the outer wall of the pipe 16, the size of the casing 1 is determined according to the external dimension of the pipe 16 to be cut, the width of the casing 1 is larger than the width of the support frame 2 and larger than the width of the base 4, preferably, the outermost edge of each side of the casing 1 exceeds the outer edge of the base 4 on the corresponding side by 50-100mm, in order to ensure that the support frame 2 can be fixed on the casing 1 stably. The sleeve 1 can be sleeved on a horizontally placed pipeline 16, and can be fixed on a vertically placed pipeline 16 or an obliquely placed pipeline 16, so that the operation is convenient. As shown in fig. 3, the distance H1 from the outer edge of the base 4 to the side of the casing 1 close to the toothless saw 9 is smaller than the distance H2 from the outer edge of the base 4 to the toothless saw 9, so as to prevent the toothless saw 9 from interfering with the outer edge of the casing 1 and affecting the cutting of the pipe 16. Correspondingly, the sleeve 1 is matched with the pipeline 16, as shown in fig. 10, the sleeve 1 can be cut from the redundant pipeline 16 or can be formed by rolling a steel plate, and the parallel consistency of two side edges is ensured when the sleeve 1 is prepared. The outer wall of the sleeve 1 is an open interface, that is, an opening is arranged on the sleeve 1, and the position of the opening is parallel to and corresponds to the position of the support frame 2 arranged on the sleeve 1. Equal fixed mounting in opening both sides limit has fastener 3 that two symmetries set up, and fastener 3 is conventional, can purchase in market, connects fastener 3 with the bolt and makes sleeve pipe 1 firmly fix on the outer wall of pipeline 16, can adjust the opening degree according to different pipeline 16's diameter size simultaneously, and then makes whole fixing device fix on the outer wall of pipeline 16.

As shown in fig. 2-4, the supporting frame 2 is parallel to the central axis of the casing 1 and is disposed perpendicular to the base 4, so that the base 4 can rotate up and down with the vertex of the supporting frame 2 as the axis, the supporting frame 2 is installed in the middle of the casing 1, the length of the supporting frame 2 is smaller than the width of the inner wall of the base 4, which is beneficial for the fixed connection of the supporting frame 2 and the lower end surface of the base 4, the vertical height of the supporting frame 2 is the same as the width of the outer wall of the base 4, which is beneficial for the base 4 to be stably installed on the top surface of the supporting frame 2, and the position of the motor 5 and the toothless saw 9 is too high due to the overhigh supporting frame 2, so that the section length of the tooth; too low a support 2 can result in the toothless saw 9 interfering with the pipe 16 before it has cut, affecting the cutting effect. Further, the cross section of the support frame 2 is an isosceles triangle, the vertex angle of the triangle is an acute angle, preferably an angle of 30-60 degrees, and because the vertical height of the support frame 2 is fixed, when the vertical height of the support frame 2 is less than 30 degrees, the width of the lower end plane of the support frame 2 is narrow, and the support frame 4, the motor 5 and the toothless saw 9 cannot be stably fixed; when the angle is larger than 60 degrees, the width of the lower end plane of the support frame 2 is narrow, the width of the lower end plane of the support frame 2 is wide, and the width exceeds the radian range matched with the pipeline 16, so that not only materials are wasted, but also the whole fixing device is unstable in installation, and the working stability of the toothless saw 9 is seriously influenced.

Further, the matching drawing of the supporting frame 2 and the base 4 and the structure drawing of the supporting frame 2 are shown in fig. 4-6, a groove is arranged in the middle of the upper end face of the supporting frame 2, and the interference between the inner side frame of the base 4 and the supporting frame 2 when the supporting frame 2 is matched with the base 4 is prevented. All welded fastening axle sleeve 202 on the top surface of support frame 2 recess both sides, round pin axle 203 runs through base 4 and axle sleeve 202 in proper order and through stopping packing ring 204 with support frame 2 and base 4 fixed connection together, the purpose of setting up of stopping packing ring 204 is to prevent that round pin axle 203 from sliding from axle sleeve 202 and coming off. The base 4 is a rectangular structure, can be made of an integrated steel plate with a flat plate structure, and also can be of a frame structure formed by welding angle steel, so long as the structure can meet the matching and stable installation with other parts, and does not have excessive requirements.

As shown in fig. 7, the motor 5 is transversely and vertically fixed on the upper end surface of the base 4, and is arranged at two ends of the base 4 in alignment with the handle 4, the output end of the motor 5 is connected with the driving wheel 12, the driven wheel 13 is arranged at the same side of the driving wheel 12, the toothless saw 9 is arranged at one side close to the handle 4, and the toothless saw 9 and the driving wheel 12 are respectively arranged at two sides of the base 4. The driving wheel 12 drives the driven wheel 13 to rotate through the belt 14, and the driven wheel 13 drives the toothless saw 9 to rotate through the rotating shaft 6 arranged between the driven wheel 13 and the toothless saw 9. The motor 5 transmits kinetic energy to the rotating shaft 6 through belt transmission, and then the rotating shaft 6 drives the toothless saw 9 to rotate. Furthermore, the length of the outermost end of the support frame 2 on the side of the base 4 away from the handle 15 is greater than the length of the outermost end of the side away from the handle 15, that is, on the base 4, the distance from the support frame 2 to the end face of the side where the handle 15 is located is greater than the distance from the end face of the side where the motor 5 is located, so that the movable range of the toothless saw 9 with the support frame 2 as the center of a circle is increased, the cutting area of the toothless saw 9 and the pipeline 16 can be increased, and the cutting efficiency can be improved. Handle 15 perpendicular to base 4 sets up, handle 15 is bent by the round steel and is made U type structure, both ends welding is in the up end one side of base 4, be favorable to operating personnel to hold handle 15 and cut the operation from top to bottom in order to control toothless saw 9, no matter what kind of cutting state toothless saw 9 is in, handle 15 is perpendicular to base 4 all the time, make operating personnel to handle 15 hold accuse power and set up through handle 15 perpendicular to base 4 downwards all the time, according to the conservation principle of power, hold the position that accuse power is used for controlling base 4 completely and not decomposed into other component.

As shown in fig. 7, the fixing device of the present invention further comprises a first cover body 8 and a second cover body 11, wherein the first cover body 8 is a semi-circular cover body, and is disposed at the upper end of the toothless saw 9, and the shape structure of the first cover body 8 is matched with the structure of the toothless saw 9, so as to prevent the splash generated by cutting from hurting people and protect the people. The second cover body 11 is a closed cover body, the belt 14 is embedded in the second cover body 11, the appearance structure of the second cover body 11 is matched with the driving wheel 12 and the driven wheel 13, and the purpose is to effectively isolate the belt transmission device from being in direct contact with an operator so as to prevent injury. Two sides of the rotating shaft 6 are respectively provided with a first support 7, one end of the first support 7 is fixed on the upper end surface of the base 4 through a bolt, and the other end of the first support 7 is fixed on the outer wall of the first cover body 8 through a bolt.

As shown in fig. 8, the structure of the first bracket 7 and the fitting position between the first bracket 7 and the first cover 11 can be seen, in this embodiment, the first bracket 7 is formed by bending a narrow long iron plate, and is easy to manufacture and fix, and the first brackets 7 disposed on both sides can stably fix the first cover 8. As shown in fig. 9-10, a second bracket 10 is disposed on a side of the base 4 away from the toothless saw 9, one end of the second bracket 10 is fixed on the upper end surface of the base 4, the other end of the second bracket is fixed on the outer wall of the second cover 11, the second bracket is a bent plate with a wider width, the mounting surface 1001 is fixed on the upper end surface of the base 4 by bolts, and the mounting surface 1002 is fixed on the outer wall of the second cover 11 by bolts. As can be seen from fig. 2 and 7, the second enclosure 11 is an assembled structure, the inner shell of the second enclosure 11 is fixed on one side close to the base 4 by the second bracket 10, and the driving wheel 12, the driven wheel 13 and the belt 14 are completely embedded and fixed in the inner shell, and the outer shell is assembled with the inner shell by bolts. The utility model discloses in, first support 7, the second support 10 that also can adopt other structures are fixed the first cover body 8 and the second cover body 11 respectively, as long as can satisfy fixed requirement can, do not do specific restriction here.

As shown in fig. 11, in the present embodiment, the toothless saw 9 and the entire fixture are firmly fixed to the pipe 16 to be cut by the fastener 3; the base 4 can rotate up and down by taking the top point of the support frame 2 as an axis through the support frame 2; the motor 5 transmits kinetic energy to the rotating shaft 6 through belt transmission, and the rotating shaft 6 drives the toothless saw 9 to rotate; the cutting position of the toothless saw blade 9 and the pipeline 16 is controlled by the handle 15. Whole simple structure, easily device and operation safety have overcome the shortcoming that manual cutting pipeline 16 takes a lot of work and takes time, and not only tangent plane port is straight, and the cutting gap is little, cuts efficiently moreover, also does not have other cutting dregs simultaneously.

The fixing device is easy to disassemble and assemble, is suitable for cutting the pipeline 16 horizontally placed on the ground, and is also suitable for cutting the pipeline 16 vertically placed or the pipeline 16 obliquely placed. All the structural components can be made of local materials which are conventional and commonly used raw materials, so that the manufacturing cost is low, other auxiliary equipment is not required, and the assembly is simple. The cutting device can be used for manufacturing the sleeves 1 with different specifications according to the diameters of different pipelines 16, is suitable for cutting circular pipelines with the diameters within +/-50 mm of the diameters of the pipelines 16, can be repeatedly used, can ensure the cutting effect of the pipelines 16, and greatly improves the cutting efficiency.

The use method of the large-diameter pipeline girdling toothless saw fixing device comprises the fixing device and comprises the following steps:

s1: firstly, drawing an annular reference line 17 on the outer wall of a cut pipeline 16, enabling the edge of the side, away from the toothless saw 9, of the sleeve 1 to correspond to the reference line 16, then fixing the sleeve 1 on the outer wall of the pipeline 16, and enabling the base 4 to be arranged perpendicular to the axis of the pipeline 16.

Specifically, reference line 17 may be set by first fixing sleeve 1 to duct 16, and drawing an annular reference line 17 on duct 16 with reference to the edge of sleeve 1 on the side away from toothless saw 9. Then, the reference line 17 is used as a reference, the edge of the side, away from the toothless saw 9, of the sleeve 1 is aligned with the reference line 17 in the whole cutting process, the cutting position of the toothless saw 9 is ensured to be always on the same plane, the straightness of the cut section port can be ensured, and the section port with better consistency can be obtained.

S2: the handle 15 is held to adjust the position of the toothless saw 9 and the toothless saw 9 is not less than 150mm away from the outer wall of the pipe 16.

S3: the power supply is connected, the handle 15 is pressed down, and the pipeline 16 is cut until the toothless saw 9 penetrates through the pipeline 16.

S4: the handle 15 is then raised to move the toothless saw 9 away from the pipe 16 and the power is disconnected, since the first loss of power tends to cause the toothless saw 9 to jam in the cutting opening.

S5: the fastener 3 is loosened, the sleeve 1 is rotated in an oriented manner, the edge of the sleeve 1 on the side away from the toothless saw 9 corresponds to the reference line 9, and the sleeve 1 is fixed on the outer wall of the pipeline 16.

S6: steps S1-S5 are repeated until the pipe 16 is cut open.

This technical scheme has following advantage and beneficial effect:

compared with the prior art, the utility model discloses a fixing device easily dismouting not only is applicable to and places the pipeline at the level and cut subaerial, still is applicable to the cutting to the pipeline of vertical pipeline of placing or the pipeline of placing of slope. All the structural components can be made of local materials which are conventional and commonly used raw materials, so that the manufacturing cost is low, other auxiliary equipment is not required, and the assembly is simple. The cutting device can be used for manufacturing the sleeves of different specifications according to the diameters of different pipelines, is suitable for cutting circular pipelines with the diameter range within +/-50 mm of the pipeline diameter, can be repeatedly used, can ensure the cutting effect of the pipelines and greatly improves the cutting efficiency.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A large-diameter pipeline girdling toothless saw fixing device is characterized by comprising a sleeve, a supporting frame and a base, wherein the sleeve is of a cylindrical structure and is wound on the outer wall of a pipeline, and the width of the sleeve is greater than that of the base; the cross section of the support frame is of a triangular structure, the lower end plane of the support frame is fixedly connected with the sleeve, and the top surface of the support frame is hinged with the lower end surface of the base; the base is perpendicular to the central axis of the sleeve, a handle is arranged at one end of the base, a motor is arranged at the other end of the base, the toothless saw is fixed on one side of the base, which is close to the handle, and the output end of the motor drives the toothless saw to rotate through belt transmission; the support frame is in the base is apart from handle one side distance is greater than keep away from handle one side distance, the handle perpendicular to the base sets up.

2. The large diameter pipe ringing toothless saw fixing device of claim 1, wherein the support frame is arranged parallel to the sleeve central axis.

3. The large diameter pipe ring cutting toothless saw fixture of claim 2, wherein the triangle is an isosceles triangle, and the angle of the top angle of the triangle is 30-60 °.

4. The large diameter pipe ring cutting toothless saw fixing device as claimed in claim 3, wherein the sleeve is provided with an opening, the opening is parallel to and aligned with the support frame, and a fastening piece is arranged at the opening.

5. The large-diameter pipeline girdling toothless saw fixing device as claimed in any one of claims 1 to 4, wherein the output end of the motor is provided with a driving wheel, a driven wheel is arranged on the same side of the driving wheel, the driving wheel drives the driven wheel to rotate through the belt, and the driven wheel drives the toothless saw to rotate through a rotating shaft arranged between the driven wheel and the toothless saw.

6. The large diameter pipe ring cutting toothless saw fixing device as claimed in claim 5, wherein the driving wheel and the toothless saw are respectively arranged at two sides of the base.

7. The large diameter pipe ring cutting toothless saw fixture device of claim 6, further comprising a first cover and a second cover, wherein the first cover is arranged at the upper end of the toothless saw, and the first cover is matched with the toothless saw in shape structure; the belt is embedded in the second cover body, and the appearance structure of the second cover body is matched with the driving wheel and the driven wheel.

8. The large-diameter pipeline girdling toothless saw fixing device as claimed in claim 7, wherein a first bracket is arranged on each side of the rotating shaft, one end of the first bracket is fixed on the upper end surface of the base, and the other end of the first bracket is fixed on the outer wall of the first cover body.

9. The large-diameter pipeline girdling toothless saw fixing device as claimed in claim 7 or 8, wherein a second bracket is arranged on the side of the base far away from the toothless saw, one end of the second bracket is fixed on the upper end surface of the base, and the other end of the second bracket is fixed on the outer wall of the second cover body.

10. The large diameter pipe ringing toothless saw fixture of claim 9 wherein said second housing comprises an inner housing and an outer housing, said inner housing being fixedly attached to said second bracket, said outer housing being removably attached to said inner housing.