CN115788338B - A kind of extubation device for hydraulic extubation machine - Google Patents

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

A kind of extubation device for hydraulic extubation machine

Technical field

The invention belongs to the technical field related to hydraulic extubation machines and pipeline clamping, and more specifically, relates to an extubation device for a hydraulic extubation machine.

Background technique

In the process of oil transportation, steam is often chosen as the heating medium to heat the pipeline. This requires the installation of a steam tracing pipe on the outside of the pipeline to ensure the normal flow of oil. However, at present, the material of domestic heating pipes is mainly carbon steel pipes, which are easy to occur. Corrosion or even erosion seriously affects production efficiency and brings great safety hazards to oil transportation. Therefore, it is necessary to replace old heat tracing pipes and install new ones in a timely manner.

At present, extubation equipment mostly uses manual extubation or semi-automatic equipment for extubation. There are currently no qualitative products for extubation equipment, and most of them are manufactured by the construction unit based on the actual project. Common extubation machines are mostly composed of a jacking device and a clamping device, and most of them require manual operation for clamping, such as using a hand hammer to knock the upper and lower slips into the slip seat to clamp the pipe sleeve, or using a small clamping cylinder. Perform clamping. For example, Chinese patent CN214196239U discloses a chuck tightening device for a hydraulic extubation machine. The hydraulic output end of the device is connected to two sets of hydraulic push rods. The upper and lower ends of the hydraulic push rods are respectively fixed with an upper support plate and a lower support plate. , there is a through hole in the middle of the support plate to connect the pipe. This device uses a snap ring on a fixing mechanism set on the pipe. There is a snap ring in the snap ring, and a clamping band fits in the snap ring to increase the friction between the snap ring and the pipe. Finally, the upper support plate is used to resist the snap ring. The pipe is pushed out; Chinese patent CN201460779U discloses a reciprocating hydraulic pipe extubation machine. The annular hydraulic cylinder in this pipe extubation machine is equipped with upper and lower slips at both ends, and the slip seats are connected to the upper and lower end caps of the hydraulic cylinder. The upper and lower slips are composed of slip seats and slip blocks respectively. There is a tapered through hole in the slip seat. The slip blocks include 3 to 4 independent wedge-shaped blocks with teeth on the inside and are installed between the slip seats and the oil pipe. , thereby achieving extubation through reciprocating motion. Both of the above two hydraulic extubation devices have problems such as too complex and bulky mechanical structures and limited installation space. When the steam tracing pipe is extracted, the working space is narrow and the extubation device needs to be suspended in the air. Therefore, the above-mentioned The extubation device is not suitable for steam tracing pipes.

Contents of the invention

In view of the above defects or improvement needs of the prior art, the present invention provides a pipe extubation device for a hydraulic pipe extubation machine. The device is small in size, light in weight and simple in structure, and can realize non-destructive extraction of heat tracing pipes.

In order to achieve the above object, according to one aspect of the present invention, a pipe extubation device for a hydraulic pipe extubation machine is provided. The pipe extubation device includes a chuck, a claw and a lifting hydraulic cylinder, wherein: the chuck It is a T-shaped boss structure composed of two hollow cylinders with different diameters. There are multiple light holes on 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 is located between the optical hole and the axis of the chuck. A first through hole is provided on the upper part of the ear plate. The first through hole is perpendicular to the axis of the chuck; the claw is a knife. The head is an arc-shaped structure, and a second through hole is provided in the middle perpendicular to the direction of the blade surface. The tail of the claw is provided with a third through hole along the direction of the blade surface. The second through hole is connected with the blade surface. The first through hole is matched by a pin, and the third through hole and the optical hole are matched by a spring and respectively fix one end of the spring. The spring is a compression spring; the lower cylindrical outer surface of the chuck is provided with threads. To cooperate with the lifting hydraulic cylinder.

Preferably, the number of said light holes is four, and the four light holes are evenly 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 through a set screw.

Preferably, the upper surface of the chuck is further provided with a protrusion, the protrusion is provided between the ear plate and the axis of the chuck, and is located on the same diameter of the chuck as the optical hole.

Another aspect of the present application provides a pipe extubation device for a hydraulic pipe extubation machine. The pipe extubation device includes a chuck, a claw and a lifting hydraulic cylinder, wherein the chuck is composed of two hollow cylinders with different diameters. The T-shaped boss structure is composed of a plurality of optical holes on the coaxial circumference of the upper surface of the chuck. Each optical hole corresponds to a pair of ear plates, and the ear plates are fixed on the upper surface of the chuck. The optical hole is located between the ear plate and the axis of the chuck. A first through hole is provided on the upper part of the ear plate. The first through hole is perpendicular to the axis of the chuck. The claw has a knife-shaped structure and its head The third through hole is an arc-shaped structure, and a third through hole is provided in the middle along the direction of the blade surface. The third through hole and the optical hole are matched through a spring and one end of the spring is respectively fixed. The tail of the claw is perpendicular to the blade. A second through hole is provided in the surface direction, and the second through hole cooperates with the first through hole through a pin; the lower cylindrical outer surface of the chuck is provided with threads to cooperate with the lifting hydraulic cylinder.

Preferably, the number of said light holes is four, and the four light holes are evenly distributed on the surface of the chuck.

Preferably, the material of the claw is phenolic resin.

Preferably, hooks are provided on the bottom surfaces of the optical hole and the third through hole, and both ends of the spring are respectively engaged with the hooks.

Generally speaking, compared with the prior art through the above technical solutions conceived by the present invention, the extubation device for a hydraulic extubation machine provided by the present invention mainly has the following beneficial effects:

1. Adopting a self-locking claw structure, it can realize rapid and continuous extraction without power, which greatly improves the automation level, saves extubation time, and thus improves work efficiency.

2. Compared with the traditional hydraulic extubation machine, this application integrates lifting and clamping, reducing the radial size, the structure is smaller and more compact, and the weight is lighter. On the one hand, it reduces the equipment cost, and on the other hand, it is very good. It solves the engineering problem of narrow working space when updating steam tracing pipelines in petrochemical enterprises.

Description of the drawings

Figure 1 is a schematic diagram of the installation structure of the extubation device used in the hydraulic extubation machine according to the embodiment of the present application;

Figure 2 is a front view of the chuck according to the embodiment of the present application;

Figure 3 is a top view of the chuck shown in Figure 2 according to the embodiment of the present application;

Figure 4 is a partial schematic diagram of the installation of the claw according to the embodiment of the present application;

Figure 5 is a schematic cross-sectional structural diagram of A-A shown in Figure 4 according to the embodiment of the present application;

Figure 6 is a schematic diagram of the extubation device used in the hydraulic extubation machine after being installed on the hydraulic cylinder according to the embodiment of the present application.

Throughout the drawings, the same reference numbers refer to the same elements or structures, wherein:

100-Chuck:

110-Optical hole; 120-Ear plate; 130-Protrusion; 140-Tightening screw; 140a-Tightening threaded hole; 150-First through hole; 160-Spring; 170-Pin shaft; 140b-Tightening threaded hole ;

200-Claw:

210-The third through hole; 220-The second through hole;

300-jacking hydraulic cylinder; 400-steam tracing pipe.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The invention provides a pipe extubation device for a hydraulic pipe extubation machine. As shown in Figure 1, the device includes a chuck 100, a claw 200 and a lifting hydraulic cylinder 300.

As shown in Figures 2 and 3, the chuck 100 is a T-shaped boss structure composed of two hollow cylinders with different diameters, that is, the upper part is a large disk and the lower part is a small cylinder. 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. The ear plates 120 are fixed on the upper surface of the chuck 100 and located on the light. Between hole 110 and chuck 100 axis. A pair of ear plates 120 are symmetrically arranged along the light hole 110 . The distance between two of the pair of ear plates is slightly larger than the thickness of the claw 200 . There is a tightening threaded hole 140a on the side wall of the large disk at a position corresponding to the light hole 110, for setting a tightening screw 140 to tighten the spring.

A first through hole 150 is provided on the upper part of the ear plate 120 , and the first through hole 150 is perpendicular to the axis of the chuck 100 .

As shown in Figures 4 and 5, the claw 200 has a knife-shaped structure, and its head is an arc-shaped structure. A second through hole 220 is provided in the middle perpendicular to the direction of the knife surface. The tail of the claw 200 is along the knife surface. A third through hole 210 is provided in the direction. The second through hole 220 cooperates with the first through hole 150 through the pin 170 (as shown in FIG. 6 ). One end of the spring 160 is matched and fixed by a spring 160, and the spring 160 is a compression spring;

The lower cylindrical outer surface of the chuck 100 is provided with threads to cooperate with the lifting hydraulic cylinder 300 (as shown in Figure 6).

In a further preferred solution, the upper surface of the chuck 100 is further provided with a protrusion 130. The protrusion 130 is disposed between the ear plate 120 and the axis of the chuck 100, and is located on the chuck with the light hole 110. On the same diameter of the disk 100, the protrusions can prevent the claws from completely falling down and getting stuck.

In a further preferred solution, the end of the claw 200 is provided with a tightening threaded hole 140b perpendicular to the third through hole for setting a tightening screw 140 to tighten the spring 160 .

In a further preferred solution, the number of the light holes 110 is four, and the four light holes are evenly distributed on the surface of the chuck 100 .

In a further preferred solution, the material of the claw 200 is a wear-resistant non-metallic material phenolic resin, the chuck, pin or pin shaft is made of ordinary carbon steel, and the lifting hydraulic cylinder 300 is a hollow aluminum cylinder.

Before starting work, assemble the clamping device first, assemble the chuck 100 and the claw 200, put the springs into the corresponding light holes and fix them, and finally screw the chuck into the jacking hydraulic cylinder.

After assembling the parts, fix them in the work area. It should be noted that when installing the extubation device on the heating pipe, you need to squeeze the four claws downward first to open them at a certain angle to facilitate the heating pipe. Pass through the center hole of the extubation device and be in the working position. After the installation is reliable, connect the lifting hydraulic cylinder 300 to the hydraulic system.

When the system is not in action, the claws 200 will tightly clamp the steam tracing pipe under the pre-tightening force of the spring 160. The static friction between the clamp block and the heating pipe prevents slippage between each other; When the lifting hydraulic cylinder 300 is lifted, its force acts on the claw 200 through the chuck 100, thereby relying on the friction and self-locking force between the clamping surfaces to pull up the steam tracing pipe 400. When the chuck 100 When retracting, the claw 200 opens to a certain angle, thereby achieving release.

By repeating the above actions, the steam tracing pipe 400 can be continuously pulled out.

Example 2

The invention provides a pipe extubation device for a hydraulic pipe extubation machine. The device includes a chuck, a claw and a lifting hydraulic cylinder. What is different from the embodiment is that the position of the light hole and the relative position of the lug plate in this embodiment are different.

The chuck is a T-shaped boss structure composed of two hollow cylinders with different diameters. The upper surface of the chuck is provided with a plurality of light holes on the coaxial circumference. Each light hole corresponds to a pair of ear plates. The ear plates Fixed on the upper surface of the chuck, the optical hole is located between the ear plate and the axis of the chuck. A first through hole is provided on the upper part of the ear plate. The first through hole is in contact with the axis of the chuck. vertical;

The claw has a knife-shaped structure, and its head is an arc-shaped structure, and a third through hole is provided in the middle along the direction of the knife surface. The third through hole and the optical hole cooperate through a spring and respectively fix one end of the spring. The tail of the claw is provided with a second through hole perpendicular to the direction of the blade surface, and the second through hole cooperates with the first through hole through a pin; the spring is a tension spring.

The lower cylindrical outer surface of the chuck is provided with threads to cooperate with the lifting hydraulic cylinder.

In a further preferred solution, the number of said light holes is four, and the four light holes are evenly distributed on the surface of the chuck.

The material of the claw is wear-resistant non-metallic material phenolic resin, the chuck, pin or pin shaft are made of ordinary carbon steel, and the lifting hydraulic cylinder is a hollow aluminum cylinder.

In a further preferred solution, hooks are provided on the bottom surfaces of the light hole and the third through hole, and the two ends of the spring cooperate with the hooks respectively.

The installation method and usage method in this embodiment are similar to those in Embodiment 1, and will not be described again here.

It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements, etc., made within the spirit and principles of the present invention, All should be included in the protection scope of the present invention.

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.