CN115788338B - Tube drawing device for hydraulic tube drawing machine - Google Patents
Tube drawing device for hydraulic tube drawing machine Download PDFInfo
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- CN115788338B CN115788338B CN202211349410.8A CN202211349410A CN115788338B CN 115788338 B CN115788338 B CN 115788338B CN 202211349410 A CN202211349410 A CN 202211349410A CN 115788338 B CN115788338 B CN 115788338B
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- hole
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- tube drawing
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- claw
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The application belongs to the technical field of hydraulic tube drawing machines and pipeline clamping, and discloses a tube drawing device for a hydraulic tube drawing machine, which mainly comprises a chuck, a claw and a jacking hydraulic cylinder, wherein: the chuck is of a boss structure formed by two hollow cylinders with different diameters, a plurality of light holes are formed in the coaxial circumference of the upper surface of the chuck, each light hole corresponds to a pair of ear plates, a first through hole is formed in the upper portion of each ear plate, and the first through hole is perpendicular to the axis of the chuck; the claw is of a knife-shaped structure, the head part of the claw is of an arc-shaped structure, a second through hole is formed in the direction perpendicular to the knife surface, a third through hole is formed in the tail part of the claw along the direction of the knife surface, the second through hole is matched with the first through hole through a pin shaft, the third through hole is matched with the unthreaded hole through a spring, one end of the spring is respectively fixed, and the spring is a pressure spring; the lower part of the chuck is matched with the jacking hydraulic cylinder. The device is small in size, light in weight and simple in structure, can realize the rapid drawing of round bars or round tubes, and the clamping jaws do not need additional power.
Description
Technical Field
The application belongs to the technical field of hydraulic tube drawing machines and pipeline clamping, and particularly relates to a tube drawing device for a hydraulic tube drawing machine.
Background
In the petroleum transportation process, steam is often selected as a heating medium to heat the pipeline, so that a steam tracing pipe is additionally arranged on the outer side of the pipeline to ensure the normal flow of petroleum, however, at present, the material of the domestic tracing pipe is mainly selected from carbon steel pipes, corrosion and even erosion are easy to occur, the production efficiency is seriously affected, and great potential safety hazard is brought to petroleum transportation, so that the old tracing pipe needs to be replaced in time and a new tracing pipe needs to be installed.
At present, manual tube drawing or semi-automatic tube drawing is adopted for tube drawing equipment, and the existing tube drawing machine equipment has no qualitative product, and is mostly manufactured by a construction unit in combination with engineering. Common tube drawing machines are mostly composed of a jacking device and a clamping device, and most of the tube drawing machines need to be clamped by manual operation, such as clamping a tube sleeve by knocking upper and lower slips into a slip seat through a hand hammer, or clamping by adopting a small clamping cylinder. For example, chinese patent CN214196239U discloses a chuck tensioning device of a hydraulic tube drawing machine, the hydraulic output end of the device is respectively connected with two sets of hydraulic push rods, the upper and lower ends of the hydraulic push rods are respectively and fixedly provided with an upper support plate and a lower support plate, and a through hole is arranged in the middle of the support plate to connect the tubes. According to the device, a clamping groove is formed in a clamping ring on a fixing mechanism arranged on a pipe, a clamping belt is engaged in the clamping groove to increase friction force between the clamping ring and the pipe, and finally the pipe is propped against the clamping ring through an upper support plate; chinese patent CN201460779U discloses a reciprocating hydraulic tube drawing machine, in which two ends of an annular hydraulic cylinder are provided with upper and lower slips, and the slip seats are connected with upper and lower end caps of the hydraulic cylinder. The upper slip and the lower slip are respectively composed of a slip seat and a slip block, wherein a conical through hole is formed in the slip seat, the slip block comprises 3-4 independent wedge-shaped blocks, teeth are arranged on the inner side of the slip block and are arranged between the slip seat and an oil pipe, and therefore pipe pulling is achieved through reciprocating motion. In the two hydraulic tube drawing devices, the mechanical structure is too complex and huge, the installation space is limited, and the like, and when the steam tracing tube is subjected to drawing operation, the working space is narrow, and the tube drawing device needs to be suspended, so that the tube drawing device is not suitable for the steam tracing tube.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the application provides a tube drawing device for a hydraulic tube drawing machine, which has small volume, light weight and simple structure and can realize the nondestructive drawing of a heat tracing tube.
To achieve the above object, according to one aspect of the present application, there is provided a tube drawing device for a hydraulic tube drawing machine, the tube drawing device including a chuck, a claw, and a jacking cylinder, wherein: the chuck is of a T-shaped boss structure formed by two hollow cylinders with different diameters, a plurality of light holes are formed in the coaxial circumference of the upper surface of the chuck, each light hole corresponds to a pair of ear plates, each ear plate is fixed on the upper surface of the chuck and is positioned between the light hole and the axis of the chuck, a first through hole is formed in the upper portion of each ear plate, and the first through hole is perpendicular to the axis of the chuck; the claw is of a knife-shaped structure, the head part of the claw is of an arc-shaped structure, a second through hole is formed in the middle of the claw and perpendicular to the direction of a knife surface, a third through hole is formed in the tail part of the claw along the direction of the knife surface, the second through hole is matched with the first through hole through a pin shaft, the third through hole is matched with the unthreaded hole through a spring, one ends of the springs are respectively fixed, and the springs are compression springs; the lower cylinder surface of the chuck is provided with threads to cooperate with the jacking cylinder.
Preferably, the number of the light holes is 4, and the 4 light holes are uniformly distributed on the surface of the chuck.
Preferably, the material of the claw is phenolic resin.
Preferably, the light hole and the third through hole fix the spring by a set screw.
Preferably, the upper surface of the chuck is further provided with a protrusion, and the protrusion is arranged between the ear plate and the axis of the chuck and is positioned on the same diameter of the chuck as the light hole.
In another aspect, the application provides a tube drawing device for a hydraulic tube drawing machine, the tube drawing device comprising a chuck, a claw and a jacking hydraulic cylinder, wherein: the chuck is of a T-shaped boss structure formed by two hollow cylinders with different diameters, a plurality of light holes are formed in the coaxial circumference of the upper surface of the chuck, each light hole corresponds to a pair of ear plates, the ear plates are fixed on the upper surface of the chuck, the light holes are positioned between the ear plates and the axis of the chuck, a first through hole is formed in the upper portion of each ear plate, and the first through hole is perpendicular to the axis of the chuck; the claw is of a knife-shaped structure, the head part of the claw is of an arc-shaped structure, a third through hole is formed in the middle of the claw along the direction of the knife surface, the third through hole is matched with the unthreaded hole through a spring and is respectively fixed with one end of the spring, a second through hole is formed in the tail part of the claw perpendicular to the direction of the knife surface, and the second through hole is matched with the first through hole through a pin shaft; the lower cylinder surface of the chuck is provided with threads to cooperate with the jacking cylinder.
Preferably, the number of the light holes is 4, and the 4 light holes are uniformly distributed on the surface of the chuck.
Preferably, the material of the claw is phenolic resin.
Preferably, hooks are arranged on the bottoms of the unthreaded holes and the third through holes, and two ends of the spring are respectively matched with the hooks.
In general, compared with the prior art, the tube drawing device for the hydraulic tube drawing machine has the following advantages that:
1. by adopting the self-locking claw structure, unpowered rapid continuous drawing can be realized, the automation level is greatly improved, the tube drawing time is saved, and the working efficiency is improved.
2. Compared with the traditional hydraulic tube drawing machine, the application integrates jacking and clamping, reduces the radial dimension, has more compact structure and lighter weight, reduces the equipment cost on one hand, and well solves the engineering problem of narrow working space when the oil chemical industry enterprises update the steam tracing pipeline on the other hand.
Drawings
FIG. 1 is a schematic view showing an installation structure of a tube drawing device for a hydraulic tube drawing machine according to an embodiment of the present application;
FIG. 2 is a front view of a chuck according to an embodiment of the application;
FIG. 3 is a top view of the chuck shown in FIG. 2 in accordance with an embodiment of the application;
FIG. 4 is a partial schematic view of the installation of the pawl of the embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of A-A of FIG. 4 according to an embodiment of the present application;
fig. 6 is a schematic view of a tube drawing device for a hydraulic tube drawing machine according to an embodiment of the present application after being mounted on a hydraulic cylinder.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein:
100-chuck:
110-a light hole; 120-ear panels; 130-bump; 140-set screw; 140 a-tightly-threaded holes; 150-a first through hole; 160-a spring; 170-pin shafts; 140 b-tightly fixing the threaded holes;
200-claw:
210-a third through hole; 220-a second via;
300-jacking a hydraulic cylinder; 400-steam tracing pipe.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. In addition, the technical features of the embodiments of the present application described below may be combined with each other as long as they do not collide with each other.
Example 1
The application provides a tube drawing device for a hydraulic tube drawing machine, which is shown in fig. 1 and comprises a chuck 100, a claw 200 and a jacking hydraulic cylinder 300.
As shown in fig. 2 and 3, the chuck 100 has a T-shaped boss structure formed of two hollow cylinders having different diameters, i.e., a large disc at an upper portion and a small cylinder at a lower portion. The upper surface of the chuck 100 is provided with a plurality of light holes 110 on the coaxial circumference, each light hole 110 corresponds to a pair of ear plates 120, and the ear plates 120 are fixed on the upper surface of the chuck 100 and are positioned between the light holes 110 and the axis of the chuck 100. A pair of ear panels 120 are symmetrically disposed along the light aperture 110. The spacing between the lugs in a pair of lugs is slightly greater than the thickness of the pawl 200. The side wall of the large disc is provided with a fastening screw hole 140a at a position corresponding to the unthreaded hole 110 for setting the fastening screw 140 to fasten the spring.
The upper portion of the ear plate 120 is provided with a first through hole 150, and the first through hole 150 is perpendicular to the axis of the chuck 100.
As shown in fig. 4 and fig. 5, the claw 200 has a knife-shaped structure, the head of the claw 200 has an arc-shaped structure, the middle of the claw is provided with a second through hole 220 perpendicular to the direction of the knife surface, the tail of the claw 200 is provided with a third through hole 210 along the direction of the knife surface, the second through hole 220 is matched with the first through hole 150 through a pin shaft 170 (as shown in fig. 6), the third through hole 210 is matched with the optical hole 110 through a spring 160 and is respectively fixed with one end of the spring 160, and the spring 160 is a compression spring;
the lower cylindrical outer surface of the chuck 100 is threaded to mate with a jacking cylinder 300 (shown in fig. 6).
In a further preferred embodiment, the upper surface of the chuck 100 is further provided with a protrusion 130, and the protrusion 130 is disposed between the ear plate 120 and the axis of the chuck 100 and is located on the same diameter of the chuck 100 as the light hole 110, and the protrusion can prevent the claw from falling down completely to be blocked.
In a further preferred embodiment, the end of the pawl 200 is provided with a fastening screw hole 140b perpendicular to the third through hole, for providing a fastening screw 140 to fasten the spring 160.
In a further preferred embodiment, the number of the holes 110 is 4, and the 4 holes are uniformly distributed on the surface of the chuck 100.
In a further preferred embodiment, the claw 200 is made of wear-resistant non-metallic phenolic resin, the chuck, the pin or the pin shaft is made of plain carbon steel, and the jacking hydraulic cylinder 300 is a hollow aluminum cylinder.
Before starting to work, the clamping device is assembled, the chuck 100 and the clamping jaw 200 are assembled, the springs are respectively placed in corresponding unthreaded holes and fixed, and finally the chuck is screwed into the jacking hydraulic cylinder.
After the parts are assembled, the parts are fixed in a working area, and when the pipe drawing device is installed on the heat tracing pipe, the four clamping claws are required to be pressed downwards to be opened for a certain angle, so that the heat tracing pipe can conveniently pass through the central hole of the pipe drawing device and is positioned at the working position. The jacking cylinder 300 is connected with a hydraulic system after reliable installation.
When the system does not act, the clamping jaw 200 can be tightly attached to and clamped with the steam tracing pipe under the action of the pretightening force of the spring 160, and the static friction force between the clamping block and the tracing pipe can prevent the clamping block and the tracing pipe from sliding; when the jacking hydraulic cylinder 300 is jacked, acting force acts on the clamping jaw 200 through the chuck 100, so that the steam tracing pipe 400 is pulled up by means of friction force and self-locking force between clamping surfaces, and when the chuck 100 is retracted, the clamping jaw 200 is opened by a certain angle, so that loosening is realized.
The continuous drawing and pulling of the steam tracing pipe 400 can be realized by repeating the above actions.
Example 2
The application provides a tube drawing device for a hydraulic tube drawing machine. Unlike the embodiment, the position of the light hole and the relative position of the ear plate are different in this embodiment.
The chuck is of a T-shaped boss structure formed by two hollow cylinders with different diameters, a plurality of light holes are formed in the coaxial circumference of the upper surface of the chuck, each light hole corresponds to a pair of ear plates, the ear plates are fixed on the upper surface of the chuck, the light holes are positioned between the ear plates and the axis of the chuck, a first through hole is formed in the upper portion of each ear plate, and the first through hole is perpendicular to the axis of the chuck;
the claw is of a knife-shaped structure, the head part of the claw is of an arc-shaped structure, a third through hole is formed in the middle of the claw along the direction of the knife surface, the third through hole is matched with the unthreaded hole through a spring and is respectively fixed with one end of the spring, a second through hole is formed in the tail part of the claw perpendicular to the direction of the knife surface, and the second through hole is matched with the first through hole through a pin shaft; the spring is a tension spring.
The lower cylinder surface of the chuck is provided with threads to cooperate with the jacking cylinder.
In a further preferred scheme, the number of the unthreaded holes is 4, and the 4 unthreaded holes are uniformly distributed on the surface of the chuck.
The claw is made of wear-resistant nonmetallic phenolic resin, the chuck, the pin or the pin shaft is made of ordinary carbon steel, and the jacking hydraulic cylinder is a hollow aluminum cylinder.
In a further preferable scheme, hooks are arranged on the bottoms of the unthreaded holes and the third through holes, and two ends of the spring are respectively matched with the hooks.
The installation and use method in this embodiment are similar to those in embodiment 1, and will not be described here again.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the application and is not intended to limit the application, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (8)
1. A tube drawing device for a hydraulic tube drawing machine, characterized in that the tube drawing device comprises a chuck (100), a jaw (200) and a jacking hydraulic cylinder (300), wherein:
the chuck (100) is of a T-shaped boss structure formed by two hollow cylinders with different diameters, a plurality of light holes (110) are formed in the coaxial circumference of the upper surface of the chuck (100), each light hole (110) corresponds to a pair of lug plates (120), each lug plate (120) is fixed on the upper surface of the chuck (100) and is positioned between the corresponding light hole (110) and the axis of the chuck (100), a first through hole (150) is formed in the upper portion of each lug plate (120), and the first through hole (150) is perpendicular to the axis of the chuck (100);
the clamping jaw (200) is of a knife-shaped structure, the head part of the clamping jaw is of an arc-shaped structure, a second through hole (220) is formed in the middle of the clamping jaw and perpendicular to the direction of a knife surface, a third through hole (210) is formed in the tail part of the clamping jaw (200) along the direction of the knife surface, the second through hole (220) is matched with the first through hole through a pin shaft, the third through hole (210) is matched with the unthreaded hole (110) through a spring (160) and is used for respectively fixing one end of the spring (160), and the spring (160) is a pressure spring;
the outer surface of the lower cylinder of the chuck (100) is provided with threads to be matched with the jacking hydraulic cylinder (300);
the upper surface of the chuck (100) is also provided with a bulge (130), the bulge (130) is arranged between the ear plate (120) and the axis of the chuck (100), and is positioned on the same diameter of the chuck (100) with the unthreaded hole (110);
when the system does not act, the clamping jaw (200) can be tightly attached to and clamped with the steam tracing pipe under the action of the pretightening force of the spring (160), and the static friction force between the clamping block and the tracing pipe can prevent the clamping block and the tracing pipe from sliding; when the jacking hydraulic cylinder (300) is jacked, acting force of the jacking hydraulic cylinder acts on the clamping jaws (200) through the chuck (100), so that the steam tracing pipe (400) is pulled up by means of friction force and self-locking force between clamping surfaces, and when the chuck (100) is retracted, the clamping jaws (200) are opened for a certain angle, and accordingly loosening is achieved.
2. The tube drawing device according to claim 1, wherein the number of the light holes (110) is 4, and the 4 light holes (110) are uniformly distributed on the surface of the chuck (100).
3. A tube drawing device according to claim 1, characterized in that the material of the jaws (200) is phenolic resin.
4. The tube drawing device according to claim 1, wherein the light hole (110) and the third through hole (210) fix the spring (160) by means of a set screw (140).
5. A tube drawing device for hydraulic tube drawing machine, its characterized in that, tube drawing device includes chuck, jack catch and jacking pneumatic cylinder, wherein: the chuck is of a T-shaped boss structure formed by two hollow cylinders with different diameters, a plurality of light holes are formed in the coaxial circumference of the upper surface of the chuck, each light hole corresponds to a pair of ear plates, the ear plates are fixed on the upper surface of the chuck, the light holes are positioned between the ear plates and the axis of the chuck, a first through hole is formed in the upper portion of each ear plate, and the first through hole is perpendicular to the axis of the chuck;
the claw is of a knife-shaped structure, the head part of the claw is of an arc-shaped structure, a third through hole is formed in the middle of the claw along the direction of the knife surface, the third through hole is matched with the unthreaded hole through a spring and is respectively fixed with one end of the spring, a second through hole is formed in the tail part of the claw perpendicular to the direction of the knife surface, and the second through hole is matched with the first through hole through a pin shaft; the spring is a tension spring;
the outer surface of the lower cylinder of the chuck is provided with threads to be matched with the jacking hydraulic cylinder;
when the system does not act, the clamping jaw can be tightly attached to and clamped with the steam tracing pipe under the action of the pre-tightening force of the spring, and the static friction force between the clamping block and the tracing pipe can prevent the clamping block and the tracing pipe from sliding; when the jacking hydraulic cylinder is jacked, acting force of the jacking hydraulic cylinder acts on the clamping jaw through the chuck, so that the steam tracing pipe is pulled up by means of friction force and self-locking force between clamping surfaces, and when the chuck is retracted, the clamping jaw is opened for a certain angle, and accordingly loosening is achieved.
6. The tube drawing device according to claim 5, wherein the number of the light holes is 4, and the 4 light holes are uniformly distributed on the surface of the chuck.
7. The tube drawing apparatus of claim 5 wherein the material of the jaws is phenolic resin.
8. The tube drawing device according to claim 5, wherein hooks are arranged on the bottoms of the unthreaded hole and the third through hole, and two ends of the spring are respectively matched with the hooks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211349410.8A CN115788338B (en) | 2022-10-31 | 2022-10-31 | Tube drawing device for hydraulic tube drawing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211349410.8A CN115788338B (en) | 2022-10-31 | 2022-10-31 | Tube drawing device for hydraulic tube drawing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115788338A CN115788338A (en) | 2023-03-14 |
| CN115788338B true CN115788338B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211349410.8A Active CN115788338B (en) | 2022-10-31 | 2022-10-31 | Tube drawing device for hydraulic tube drawing machine |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1979000908A1 (en) * | 1978-04-10 | 1979-11-15 | Leffer Stahl & App | Machine for pulling out a drilling tube of the ground |
| CN203917997U (en) * | 2014-07-16 | 2014-11-05 | 天润曲轴股份有限公司 | A kind of clamping device with pulldown function |
| CN204082039U (en) * | 2014-08-29 | 2015-01-07 | 马健 | A kind of slip system integrating tube drawing and shackle function |
| CN109604656A (en) * | 2018-12-28 | 2019-04-12 | 武汉协和齿环有限公司 | Synchronizer lever ring workpiece machining clamp and processing method |
| CN210738504U (en) * | 2019-07-04 | 2020-06-12 | 新沂市浩源金融服务有限公司 | Pipe clamping device for pipe drawing machine |
| CN114458184A (en) * | 2022-02-28 | 2022-05-10 | 中国铁路设计集团有限公司 | Hydraulic ultrasonic vibration pipe drawing machine and using method thereof |
-
2022
- 2022-10-31 CN CN202211349410.8A patent/CN115788338B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1979000908A1 (en) * | 1978-04-10 | 1979-11-15 | Leffer Stahl & App | Machine for pulling out a drilling tube of the ground |
| CN203917997U (en) * | 2014-07-16 | 2014-11-05 | 天润曲轴股份有限公司 | A kind of clamping device with pulldown function |
| CN204082039U (en) * | 2014-08-29 | 2015-01-07 | 马健 | A kind of slip system integrating tube drawing and shackle function |
| CN109604656A (en) * | 2018-12-28 | 2019-04-12 | 武汉协和齿环有限公司 | Synchronizer lever ring workpiece machining clamp and processing method |
| CN210738504U (en) * | 2019-07-04 | 2020-06-12 | 新沂市浩源金融服务有限公司 | Pipe clamping device for pipe drawing machine |
| CN114458184A (en) * | 2022-02-28 | 2022-05-10 | 中国铁路设计集团有限公司 | Hydraulic ultrasonic vibration pipe drawing machine and using method thereof |
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| CN115788338A (en) | 2023-03-14 |
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