PE pipe extraction aid

Abstract

The application relates to the technical field of pipelines, in particular to a PE pipe pulling-out auxiliary tool. The PE pipe pulling-out auxiliary tool is used for pulling out a PE pipe from a joint, a retreat-preventing ring is arranged between the PE pipe and the joint; the PE pipe pulling-out auxiliary tool comprises a body with a length direction Y and a width direction X; the body comprises a pressing part and a clamping part; along a height direction, the pressing part is provided with a top surface and a bottom surface; the top surface is used for receiving external pressure; the bottom surface is used for applying pressure to the retreat-preventing ring; a clamping groove is arranged on the body and used for clamping the PE pipe; in a use state, the PE pipe is clamped into the clamping groove, the bottom surface abuts against the retreat-preventing ring, and after the top surface receives pressure applied by a hand or a finger, the bottom surface presses downward the retreat-preventing ring; in a standby state, the clamping part is clamped between any two fingers. The PE pipe pulling-out auxiliary tool is convenient to use and saves labor.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pipes, in particular to a PE pipe pulling-out auxiliary tool. BACKGROUND

[0002] A PE pipe joint is connected with a PE pipe, and a retreat prevention ring is arranged at the connection position of the PE pipe joint and the PE pipe. A reverse buckle is arranged on the retreat prevention ring. When the PE pipe is pulled out, the reverse buckle will be tightened so that the PE pipe cannot be directly pulled out. Therefore, when the PE pipe is pulled out, the retreat prevention ring needs to be pressed downward first, so that the reverse buckle will not be tightened when the PE pipe is pulled out, and the PE pipe can be smoothly pulled out. The existing PE pipe pulling-out auxiliary tool is usually a wrench. After the head of the wrench is placed on the retreat prevention ring to form a fulcrum, the handle of the wrench is held and the wrench is turned, so that the head of the wrench moves relative to the fulcrum to press the retreat prevention ring.

[0003] However, this use mode is a "laborious lever", especially after the surface of the pipe is roughened after being pulled out and inserted for many times, the pipe is more difficult to pull out. The use mode is not "handy", and it is necessary to align and adjust the level, which is easy to cause the tool to be inclined by the worker during use, and the retreat prevention ring may not be pressed in place, resulting in difficulty in pulling out. In addition, the PE pipe joint must be in a fixed state during use, and it is difficult to use if there is no fulcrum to fix or press the joint. The worker is more likely to cause fatigue when using such a tool, resulting in a decrease in efficiency. SUMMARY

[0004] Therefore, it is necessary to provide a PE pipe pulling-out auxiliary tool which is convenient to use and saves labor.

[0005] A PE pipe pulling-out auxiliary tool is used for pulling out a PE pipe from a joint. A retreat prevention ring is arranged between the PE pipe and the joint. The PE pipe pulling-out auxiliary tool comprises:

[0006] A body has a length direction Y and a width direction X. The body comprises a pressing contact part and a clamping part. In the height direction, the pressing contact part has a top surface and a bottom surface. The top surface is used for receiving external pressure, and the bottom surface is used for applying pressure to the retreat prevention ring.

[0007] A clamping groove is arranged on the body and used for clamping the PE pipe.

[0008] The PE pipe pulling-out auxiliary tool comprises a use state and a standby state. In the use state, the PE pipe is clamped in the clamping groove, the bottom surface abuts against the retreat prevention ring, and the bottom surface presses the retreat prevention ring downward after the top surface receives the pressure applied by a hand. In the standby state, the clamping part is clamped between any two fingers.

[0009] In one of the embodiments, the abutting and pressing part is provided in plurality, and the plurality of abutting and pressing parts are arranged on both sides of the clamping part and connected with the clamping part respectively; the plurality of abutting and pressing parts and the clamping part form the clamping slot.

[0010] In one of the embodiments, the abutting and pressing part and the clamping part are integrally formed.

[0011] In one of the embodiments, the clamping part is arranged to protrude from the body away from the clamping slot, and the width of the clamping part is smaller than the width of the body.

[0012] In one of the embodiments, the body is provided in plurality, and the plurality of bodies are positioned as at least a first body and a second body, the first body and the second body are arranged back to back, and the clamping parts of the two bodies are connected with each other; the side wall of the first body, the side wall of the second body and the side wall of the clamping part form a clamping slot.

[0013] In one of the embodiments, the clamping slot is provided in plurality, and the plurality of clamping slots are defined as at least a first clamping slot and a second clamping slot, the first clamping slot is arranged on the first body, and the second clamping slot is arranged on the second body; the width of the first clamping slot is L1, the width of the second clamping slot is L2, and L1 and L2 satisfy the relationship: L1≥L2.

[0014] In one of the embodiments, at least part of the inner wall of the clamping slot is a circular arc inner wall, and the center of the circular arc inner wall is O; the abutting and pressing part protrudes from the center O along the length direction Y, the length of the protruding part is L3, and 15 mm≥L3≥10 mm.

[0015] In one of the embodiments, along the width direction X, the width of the abutting and pressing part is D1, and 25 mm≥D1≥12 mm; along the length direction Y, the length of the abutting and pressing part is D2, and 40 mm≥D2≥20 mm; along the width direction X, the width of the clamping part is D3, and 18 mm≥D3≥3 mm; along the length direction Y, the length of the clamping part is D4, and 50 mm≥D4≥15 mm.

[0016] In one of the embodiments, the thickness of the clamping part is H1, and 10 mm≥H1≥2 mm; the thickness of the abutting and pressing part is H2, and the thickness of the body is H3, and H1, H2 and H3 satisfy the relationship: H1=H2=H3.

[0017] In one of the embodiments, along the length direction Y, the length of the clamping slot is D5, and 50 mm≥D5≥30 mm.

[0018] Compared with the prior art, the operating principle of the PE pipe pulling-out auxiliary tool is that after the pressure in the height direction is applied to the abutting pressing part, the abutting pressing part directly transmits the pressure to the anti-off ring, and the anti-off ring moves downward under the downward pressure. Without the existence of the grasping and labor-consuming lever, it is equivalent to adding a prosthesis to the hand, and the pressing of the anti-off ring can be directly realized by the pressing of the fingers, so that the use is convenient and labor-saving, and the PE pipe can be easily pulled out by one hand or the other hand. In addition, in the standby state, the auxiliary tool can be clamped between any two fingers by the clamping part, and after clamping, the auxiliary tool does not need to be taken down and the position does not need to be changed, so that the operator can directly perform other work without affecting the grasping and use of the operator's hand. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The structure schematic diagram of the PE pipe pulling-out auxiliary tool provided by the present application is shown.

[0021] Figure 2 The front view of the PE pipe pulling-out auxiliary tool is shown. Figure 1

[0022] Figure 3 The side view of the PE pipe pulling-out auxiliary tool is shown. Figure 1

[0023] The structure schematic diagram of one of the embodiments of the PE pipe pulling-out auxiliary tool provided by the present application is shown. Figure 4

[0024] The front view of the PE pipe pulling-out auxiliary tool is shown. Figure 5 Figure 4 The side view of the PE pipe pulling-out auxiliary tool is shown.

[0025] Figure 6 Figure 4 The structure schematic diagram of one of the embodiments of the PE pipe pulling-out auxiliary tool provided by the present application is shown.

[0026] Figure 7 The front view of the PE pipe pulling-out auxiliary tool is shown.

[0027] Figure 8 The side view of the PE pipe pulling-out auxiliary tool is shown. Figure 7

[0028] The side view of the PE pipe pulling-out auxiliary tool is shown. Figure 9 Figure 7 The side view of the PE pipe pulling-out auxiliary tool is shown.

[0029] Figure 10 ​​​​A schematic diagram of the PE pipe and joint fitting provided in the present application.

[0030] Figure 11 A working schematic diagram of the PE pipe pulling assisting tool provided in the present application.

[0031] Figure 12 A prior art PE pipe pulling assisting tool.

[0032] Figure 13 A working schematic diagram of the prior art PE pipe pulling assisting tool.

[0033] Reference signs: 100, PE pipe; 200, joint; 300, anti-back-off ring; 1, body; 1a, first body; 1b, second body; 2, clamping groove; 21, first clamping groove; 22, second clamping groove; 23, arc inner wall; 11, abutting pressing portion; 111, top surface; 112, bottom surface; 12, clamping portion; 13, clamping arm; 14, clamping groove. DETAILED DESCRIPTION

[0034] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the application. It should be noted that the use of particular verbiage or terminology is intended to convey not an exclusive or exhaustive description of the application, but rather to provide those skilled in the art with an understanding of the fundamental aspect of the teachings such that they can better make use of other facets and scope thereof.

[0035] It should be noted that when an element or layer is referred to as being "on" or "connected to" another element or layer, it can be directly on or connected to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements or layers present. The use of the terms "on" or "connected to" or "directly on" or "directly connected to" in the description and claims of the present application should not be interpreted as indicating or implying a stacking arrangement.

[0036] In addition, the terms "first", "second", and the like, do not denote any quantity or order but are used as labels for distinguishing between various elements. Thus, these terms are used interchangeably with "one or more", "one or more than one", "one or more than one", "one or more than one", and "one or more than one", unless explicitly indicated otherwise. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.

[0037] In the present application, unless specifically defined and limited otherwise, the first feature is "on", "under", "above" or "over" the second feature can be the first feature directly and the second feature contact, or the first feature and the second feature indirectly through the intermediate medium contact. Moreover, the first feature is "on", "above" and "over" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the first feature is less than the second feature in horizontal height.

[0038] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The use of the terms "and / or" in the description of the present application includes any and all combinations of one or more of the associated listed items.

[0039] The PE pipe joint 200 is provided with a anti-back-off ring 300 at the place where it is connected with the PE pipe 100, and the anti-back-off ring 300 has a ring-shaped reverse buckle attached to a support claw. The support claw is circular and can sway, and the outer diameter of the support claw near the inner end is larger. When the PE pipe 100 is pulled outwards, the reverse buckle is pulled outwards with the anti-back-off ring 300, and the outlet diameter is smaller. Since the outer diameter of the anti-back-off ring 300 is large, the support claw is tightened, and the reverse buckle is also tightened, so the pipe cannot be easily pulled out. To pull out the pipe, the anti-back-off ring 300 needs to be pressed in to prevent the reverse buckle from tightening, so that the pipe can be pulled out more easily. (The anti-back-off ring 300 can be understood as a circular cone, and the joint 200 is a cylindrical tube. When in use, the small end of the circular cone is first inserted into the cylindrical tube, and the diameter of the cylindrical hole is slightly smaller than the diameter of the bottom of the circular cone. The circular cone needs to be contracted to pass through the cylindrical hole. When it is contracted, the reverse buckle will tightly grasp the PE pipe 100, and the tighter it is pulled out, the tighter it is. This plays a role in preventing back-off.

[0040] The existing PE pipe pulling-out auxiliary tool, such as Figure 12 as shown, is used by pressing the handle to pry the anti-back-off ring 300 of the joint 200 Figure 13 . This use is a "labored lever", especially after the surface of the pipe is roughened after being pulled out and inserted multiple times, it is more laborious to pull out, and if it is not pressed according to Figure 13When used horizontally, the anti-reverse ring 300 may not be fully pressed down, causing it to tilt and making extraction difficult. The tool is not "convenient" to use and requires alignment and leveling, which can easily lead to workers tilting the tool during use. Furthermore, the PE pipe 100 connector 200 must be fixed in place; without a fulcrum to secure or press the connector 200, it becomes difficult to use. Using such a tool can easily cause worker fatigue, leading to decreased efficiency. Although there are improvements such as adding a tilt angle to the main slot 2, it is still a force-intensive lever, and its pressing stability remains problematic. Therefore, the existing PE pipe 100 extraction tool has drawbacks such as being difficult to use and requiring considerable effort.

[0041] Please see Figures 1 to 11 This application provides a PE pipe pulling-out auxiliary tool for pulling out the PE pipe 100 from the connector 200. Figure 10 As shown, an anti-removal ring 300 is provided between the PE pipe 100 and the connector 200. Specifically, the PE pipe pull-out auxiliary tool is used to press the anti-removal ring 300 to pull the PE pipe 100 out of the connector 200. Figures 1 to 3 As shown, the PE pipe removal auxiliary tool includes a body 1 and a slot 2. The body 1 has a length direction Y and a width direction X. The body 1 includes an abutting pressing part 11 and a clamping part 12. Along the height direction, the abutting pressing part 11 has a top surface 111 and a bottom surface 112. The top surface 111 is used to receive external pressure, and the bottom surface 112 is used to apply pressure to the anti-removal ring 300. The slot 2 is formed on the body 1 for clamping the PE pipe 100. The PE pipe removal auxiliary tool has a working state and a standby state. In the working state, the PE pipe 100 is inserted into the slot 2, the bottom surface 112 of the abutting pressing part 11 abuts against the anti-removal ring 300, and after the top surface 111 receives pressure applied by a hand, the bottom surface 112 presses down on the anti-removal ring 300. In the standby state, the clamping part 12 is clamped between any two fingers.

[0042] Understandably, when in use, after a person or finger applies pressure in the height direction to the top surface 111 of the pressing part 11, the bottom surface 112 of the pressing part 11 directly transmits the pressure to the anti-detachment ring. The anti-detachment ring moves down after being subjected to downward pressure, and at this time, the PE tube 100 can be pulled out.

[0043] Single-handed operation (fixed position of joint 200): the clamping part 12 is clamped between the knuckles of two fingers, one finger below the clamping part 12 and the other finger above the clamping part 12 and the abutting pressing part 11, in this state, the clamping groove 2 is clamped to the PE pipe 100, the bottom surface 112 of the abutting pressing part 11 abuts against the anti-back-off ring 300, and the remaining fingers hold the PE pipe 100. When pulling out the pipe, the finger above the clamping part 12 applies pressure downward (i.e. applies pressure upward to the abutting pressing part 11), and the finger holding the PE pipe 100 pulls the pipe upward at the same time, and the PE pipe 100 is pulled out upward.

[0044] Double-handed operation (fixed position of joint 200): the clamping part 12 is clamped between the knuckles of two fingers of one hand, and the remaining knuckles of the two fingers not clamped cover above the abutting pressing part 11, in this state, the clamping groove 2 is clamped to the PE pipe 100, the bottom surface 112 of the abutting pressing part 11 abuts against the anti-back-off ring 300, and the remaining fingers of this hand hold the joint 200. The other hand holds the PE pipe 100, and then the fingers covering above the abutting pressing part 11 apply pressure downward (i.e. apply pressure upward to the abutting pressing part 11), and the fingers holding the PE pipe 100 pull the pipe upward at the same time, and the PE pipe 100 is pulled out upward.

[0045] The operator only needs to apply pressure to the abutting pressing part 11 with fingers, which is a straight pressure method, without the existence of gripping and laborious levers, and is convenient and labor-saving to use. Secondly, only two fingers of the operator are used for clamping and pressing, and the gripping function of the operator's hand is reserved, which is equivalent to adding a prosthesis to the hand. In the case of fixed position of the PE pipe 100, the remaining fingers of the operator can directly grip the PE pipe 100 for pulling out. That is, single-handed operation can realize pipe pulling out, which is convenient and labor-saving. Even when the joint 200 of the PE pipe 100 is not easy to fix, only other fingers are needed to assist, and single-handed easy pressing of the anti-back-off ring 300 can be realized, which helps to improve the efficiency of frequent plugging and unplugging of the PE pipe 100 or only a large number of pipe pulling out work.

[0046] The straight pressure of the abutting pressing part 11 can effectively improve the problem that the anti-back-off ring 300 is not completely pressed down or is pressed to one side, resulting in difficulty in pulling out the pipe. The clamping part 12 not only helps to right in the use process, but also can be clamped between any two fingers in the standby state, and can be clamped without being put down after use, without affecting the gripping and use of the operator's hand, without the need to frequently pick up and put down the tool. In the work station where the joint 200 of the PE pipe 100 needs to be frequently plugged and unplugged, the fatigue of the staff can be greatly reduced, thereby improving the work efficiency.

[0047] In an embodiment, the abutting pressing part 11 is provided in plurality, the plurality of abutting pressing parts 11 are arranged on both sides of the clamping part 12 and are connected with the clamping part 12 respectively; the plurality of abutting pressing parts 11 and the clamping part 12 are arranged to form the clamping groove 2.

[0048] Exemplarily, the abutting pressing part 11 is provided in two, along the width direction X of the body 1, the clamping groove 2 is located between the two abutting pressing parts 11, the two ends of the clamping part 12 are connected with the two abutting pressing parts 11 respectively, and the space formed by the inner sides of the two abutting pressing parts 11 and the inner side of the clamping part 12 is the clamping groove 2.

[0049] Understandably, in this state, the clamping groove 2 and the clamping part 12 are located at the middle position, and the abutting pressing parts 11 are arranged on both sides. When pressing the anti-escape ring, the abutting pressing parts 11 can abut the anti-escape ring to the maximum along the outer ring of the clamping groove 2, and can further completely press down the anti-escape ring when pressing the abutting pressing parts 11. Since it is direct pressing, basically all the force is used to press the abutting pressing parts 11, and the abutting pressing parts 11 are arranged on both sides, which is basically symmetrical and consistent in direction, so it is easier to completely press down the anti-escape ring 300 of the connector 200. When pressing, the anti-escape ring 300 cannot easily tilt to cause the difficult pipe pulling phenomenon.

[0050] Secondly, when the clamping part 12 is clamped between two fingers, the clamping groove 2 can give a certain position, and the whole auxiliary tool will not occupy too much finger position for clamping, which improves the flexibility of the operator's hand after clamping, and further improves the labor-saving and convenient degree of operation. And the abutting pressing parts 11 are arranged on both sides of the clamping part 12, and when clamping, there is no case of single-sided structure being too large or too heavy, which is not easy to tilt to one side, and the clamping is stable.

[0051] As preferred, the central axis of the clamping part 12 is coaxially arranged with the central axis of the body 1, and the clamping part 12 protrudes outward from the central position of the body 1.

[0052] As preferred, the shapes and sizes of the two abutting pressing parts 11 arranged on both sides of the clamping part 12 are the same, and the two abutting pressing parts 11 are symmetrically arranged along the central axis of the body 1. The two abutting pressing parts 11 are symmetrically stressed, the direction of the pressure applied to the anti-escape ring 300 is consistent, and it is easier to completely press down the anti-escape ring 300 of the connector 200. When pressing, the anti-escape ring 300 cannot easily tilt to cause the difficult pipe pulling phenomenon.

[0053] Of course, it is not limited to this, in other embodiments, the shapes and sizes of the abutting pressing parts 11 can also be arranged to be the same, and they are not symmetrically arranged along the central axis of the clamping part 12, as long as they can complete the pressing of the anti-escape ring.

[0054] In one embodiment, the pressing part 11 and the clamping part 12 are integrally formed. They can be integrally formed by stamping, die casting, injection molding, etc., which is convenient to process and is not prone to breakage at the connection point during long-term use, resulting in a long service life.

[0055] Of course, this is not the only option. In other embodiments, the pressing part 11 and the clamping part 12 can also be provided separately and connected by welding, bonding or other methods.

[0056] like Figures 4 to 6 As shown, in one embodiment, the clamping part 12 protrudes from the body 1, specifically from the side of the body 1 away from the slot 2 and in a direction away from the slot 2. Preferably, the width of the clamping part 12 is smaller than the width of the body 1.

[0057] Understandably, the clamping part 12 protrudes from the main body 1 and has a certain length. When the fingers clamp the clamping part 12, they can choose to clamp only the clamping part 12 between their fingers, while the rest of the main body 1 is on the palm or back of the hand. Basically, only one joint of the finger is needed for clamping, which makes the fingers more flexible and the fingers will not feel uncomfortable when clamping large objects.

[0058] like Figures 7 to 9 As shown, in one embodiment, multiple bodies 1 are configured, and the multiple bodies 1 are at least positioned as a first body 1a and a second body 1b. The first body 1a and the second body 1b are arranged back to back, and their clamping portions 12 are connected to each other. The sidewalls of the first body 1a, the second body 1b, and the clamping portions 12 form a clamping groove 14.

[0059] Furthermore, multiple card slots 2 are provided, and the multiple card slots 2 are at least defined as a first card slot 21 and a second card slot 22. The first card slot 21 is formed on the first body 1a, and the second card slot 22 is formed on the second body 1b. Among them, the width of the first card slot 21 is L1, the width of the second card slot 22 is L2, and L1 and L2 satisfy the relationship: L1≥L2.

[0060] Understandably, the two interconnected clamping parts 12 constitute a clamping arm 13. The two ends of the clamping arm 13 are a first body 1a and a second body 1b, respectively. A first slot 21 and a second slot 22 are respectively provided on the first body 1a and the second body 1b. Both the first body 1a and the second body 1b can perform pressing operations on the anti-slip ring, making it more flexible to use. The clamping slot 14 is located on the side of the clamping arm 13, providing space for the fingers and facilitating clamping. Furthermore, the first body 1a and the second body 1b at both ends provide a certain degree of restraint during clamping, preventing the tool from slipping off the knuckles.

[0061] Exemplarily, L1 and L2 satisfy the relationship: L1>L2. That is, the widths of the first and second clamping grooves 21 and 22 are different, and the diameters of the corresponding clamped PE pipes 100 are also different, which can adapt to the pulling out of PE pipes 100 of different diameters (such as two-pipe and three-pipe), and when operating PE pipes 100 of different sizes, it is not necessary to frequently change tools, and the pipe pulling auxiliary tool implements "without taking down and without changing position", directly continuing other work, and the work efficiency is high.

[0062] Exemplarily, the specific values of L1 and L2 are set according to actual needs, as long as they are suitable for the diameters of different types of PE pipes 100 in working conditions.

[0063] Further, at least part of the inner wall of the clamping groove 2 is a circular arc inner wall 23, and the PE pipe 100 and the anti-back-off ring 300 are both circular pipes. The clamping groove 2 is partially provided with a circular arc inner wall 23, which better adapts to the PE pipe 100 and the anti-back-off ring 300. Preferably, the circular arc inner wall 23 is provided on the side of the clamping groove 2 close to the clamping portion 12, that is, on the side of the clamping groove 2 closer to the center of the body 1.

[0064] Further, the center of the part of the circular arc inner wall 23 is O. The abutting and pressing portion 11 protrudes from the center O along the length direction Y, and the length of the protruding portion is L3, 15 mm≥L3≥10 mm. Under this structure, the length of the abutting and pressing portion 11 is greater than the radius of the clamping groove 2 of the PE pipe 100, and the pressing of the anti-back-off ring 300 is more sufficient. When the length exceeds 10 mm-15 mm, it is more labor-saving when pressing.

[0065] Wherein, the value of L3 can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, etc. Of course, the corresponding value can also be selected according to the actual situation, which is not described here.

[0066] Further, along the width direction X, the width of the abutting and pressing portion 11 is D1, 25mm≥D1≥12mm. Along the length direction Y, the length of the abutting and pressing portion 11 is D2, 40mm≥D2≥20mm; along the width direction X, the width of the clamping portion 12 is D3, 18mm≥D3≥3mm; along the length direction Y, the length of the clamping portion 12 is D4, 50mm≥D4≥15mm.

[0067] It is understandable that if the width of the pressing part 11 is set too small, the area of the finger applying pressure when covering the pressing part 11 and pressing the pressing part 11 is too small, and the contact area between the pressing part 11 and the anti-escape ring is also small, which cannot well transmit the pressure, and the comfort of the finger applying pressure is poor. If the width of the pressing part 11 is set too large, the width of the whole body 1 will be too large, which not only affects the gripping effect of the hand holding the tool, but also is blocked when there are other obstacles near the PE pipe 100 or the joint 200, so that it cannot be put in, thereby affecting the use. When the width of the pressing part 11 is set to 25mm≥D1≥12mm, it can ensure that the pressing part 11 covers at least 2 / 3 of the finger width, and also ensure that the gripping is not affected.

[0068] Similarly, if the length of the pressing part 11 is set too small, the area of the finger applying pressure when covering the pressing part 11 and pressing the pressing part 11 is too small, and the contact area between the pressing part 11 and the anti-escape ring is also small, which cannot well transmit the pressure, and the comfort of the finger applying pressure is poor. If the length of the pressing part 11 is set too large, the position of the finger applying pressure when covering the pressing part 11 and pressing the pressing part 11 is too far back, which is too far from the center of the anti-escape ring 300, and also cannot well transmit the pressure to the anti-escape ring 300, thereby affecting the use effect. When the length of the pressing part 11 is set to 20mm-40mm, it can ensure that the pressing part 11 covers at least 2 / 3 of the finger length, and also ensure that it does not exceed the finger length too much, thereby ensuring good use effect.

[0069] It is understandable that when operating with both hands, two fingers are one above the other to clamp the clamping part 12, and when pressing, the clamping part 12 also applies a certain pressure to the fingers. If the width of the clamping part 12 is set too small, the clamping part 12 will be too thin, thereby the pressure on the fingers is too large. When operating with one hand, the clamping part 12 is transversely added between the two fingers in the width direction, if the width of the clamping part 12 is set too large, the clamping part 12 is too thick, not only the fingers are not comfortable to clamp, but also the force when subsequently pressing on the pressing part 11 is weakened after the fingers are excessively separated. When the width of the clamping part 12 is set to 3mm-18mm, it can ensure comfortable clamping, good finger pressing, and good use effect.

[0070] Understandably, in the operation of pulling out the tube, the clamping part 12 plays a clamping role and also plays a certain auxiliary supporting role. If the length of the clamping part 12 is set to be too short, not more than the thickness of a finger, then the clamping is more laborious, and the auxiliary supporting effect is also poorer. If the length of the clamping part 12 is set to be too long, then the overall weight and the position of the center of gravity of the clamping part 12 will be backward, which will also cause the clamping to be more laborious, and the auxiliary supporting effect is also poorer. When the length of the clamping part 12 is set to be 15mm-50mm, it can not only ensure comfortable and easy clamping, but also ensure that the clamping part 12 synchronously plays an auxiliary supporting role, improves the comfort of use, and can also be more labor-saving.

[0071] Secondly, the width of the abutting pressing part 11, the width of the clamping part 12, and the length of the abutting pressing part 11 jointly limit the size of the tool in the clamping state, the body 1 located in the inner side of the palm, and the selection of the above values ensures that the size of the body 1 located in the inner side of the palm is appropriate under the premise of ensuring the respective use effects of the abutting pressing part 11 and the clamping part 12, and does not excessively occupy the space of the palm. Whether it is a hollow fist, a bent finger, a grip, or even a fully stretched finger upward palm, etc. actions can be normally operated, the "prosthetic" effect of the tool is maximally realized, time and labor are saved, it is ensured that the tool can be "not taken off and not changed in position" in the hand, and the working efficiency is improved.

[0072] Exemplarily, the value of D1 is preferably set to be 23mm≥D1≥12mm. Among them, the value of D1 can be 12mm, 14mm, 16mm, 19mm, 21mm, 23mm, etc. Of course, corresponding values can also be selected according to actual conditions, which will not be described here.

[0073] Exemplarily, the value of D2 is preferably set to be 50mm≥D2≥30mm. Among them, the value of D2 can be 30mm, 34mm, 40mm, 44mm, 50mm, etc. Of course, corresponding values can also be selected according to actual conditions, which will not be described here.

[0074] Exemplarily, the value of D3 is preferably set to be 10mm≥D3≥5mm. Among them, the value of D3 can be 5mm, 7mm, 9mm, 10mm, etc. Of course, corresponding values can also be selected according to actual conditions, which will not be described here.

[0075] Exemplarily, the value of D4 is preferably set to be 40mm≥D4≥17mm. Among them, the value of D4 can be 17mm, 20mm, 25mm, 30mm, 35mm, 38mm, 40mm, etc. Of course, corresponding values can also be selected according to actual conditions, which will not be described here.

[0076] Further, the thickness of the clamping portion 12 is H1, 10mm≥H1≥2mm. If the thickness of the clamping portion 12 is too thin, the strength is not enough, it cannot assist support and is easy to damage. If the thickness of the clamping portion 12 is too thick, it is not convenient to clamp, which affects use. When the thickness of the clamping portion 12 is 2mm-10mm, it is most appropriate.

[0077] Illustratively, the value of H1 can be 2mm, 4mm, 6mm, 8mm, 10mm, etc., and of course the corresponding value can be selected according to the actual situation, which is not described here.

[0078] In an embodiment, the thickness of the abutting pressing portion 11 is H2, the thickness of the body 1 is H3, H1, H2, H3 satisfy the relationship: H1=H2=H3. The thickness of the entire auxiliary tool is consistent, which is more convenient to hold and press.

[0079] Further, along the length direction Y, the length of the clamping groove 14 is D5, 50mm≥D5≥30mm. When the body 1 is provided as a plurality, the clamping groove 14 is the movement space of the fingers of the operator, if the length of the clamping groove 14 is set too long, the movement range is too tight, it is not convenient for the fingers to move, and it is not convenient to operate. If the length of the clamping groove 14 is set too long, the corresponding clamping arm 13 is also too long, not only waste material, but also increase cost, and it is easy to interfere with the operation. When the length of the clamping groove 14 is set to 30mm-50mm, it is most appropriate.

[0080] Illustratively, the value of D5 can be 30mm, 35mm, 38mm, 40mm, 45mm, 50mm, etc., and of course the corresponding value can be selected according to the actual situation, which is not described here.

[0081] The technical features of the above-described embodiments can be combined arbitrarily, in order to make the description simple, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the description.

[0082] The above-described embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which are within the scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A PE pipe pulling-out auxiliary tool for pulling out a PE pipe (100) on a joint (200), a retreat-preventing ring (300) being arranged between the PE pipe (100) and the joint (200); characterized in that, The PE pipe pulling-out auxiliary tool comprises: A body (1) has a length direction Y and a width direction X; the body (1) comprises a pressing part (11) and a clamping part (12); along the height direction, the pressing part (11) has a top surface (111) for receiving external pressure and a bottom surface (112) for applying pressure to the anti-back-off ring (300); A clamping groove (2) is arranged on the body (1) and used for clamping a PE pipe (100); The PE pipe pulling-out auxiliary tool comprises a use state and a standby state; in the use state, the PE pipe (100) is clamped in the clamping groove (2), the bottom surface (112) is in abutment with the anti-back-off ring (300), and the top surface (111) receives the pressure applied by a hand, and then the bottom surface (112) presses the anti-back-off ring (300) downward; in the standby state, the clamping part (12) is clamped between any two fingers; The body (1) is provided in a plurality of forms, and the plurality of bodies (1) are at least positioned as a first body (1a) and a second body (1b); the first body (1a) and the second body (1b) are arranged in a back-to-back manner, and the clamping parts (12) of the two bodies are connected to each other; the side wall of the first body (1a), the side wall of the second body (1b) and the side wall of the clamping part (12) form a clamping groove (14); The clamping groove (2) is provided in a plurality of forms, and the plurality of clamping grooves (2) are at least defined as a first clamping groove (21) and a second clamping groove (22); the first clamping groove (21) is arranged on the first body (1a), and the second clamping groove (22) is arranged on the second body (1b); the width of the first clamping groove (21) is L1, the width of the second clamping groove (22) is L2, and L1 and L2 satisfy the relationship: L1≥L2; At least part of the inner wall of the clamping groove (2) is a circular arc inner wall (23), and the center of the circular arc inner wall (23) is O; the pressing part (11) protrudes from the center O along the length direction Y, the length of the protruding part is L3, and 15 mm≥L3≥10 mm; Along the width direction X, the width of the pressing part (11) is D1, and 25 mm≥D1≥12 mm; along the length direction Y, the length of the pressing part (11) is D2, and 40 mm≥D2≥20 mm; along the width direction X, the width of the clamping part (12) is D3, and 18 mm≥D3≥3 mm; along the length direction Y, the length of the clamping part (12) is D4, and 50 mm≥D4≥15 mm; The thickness of the clamping part (12) is H1, and 10 mm≥H1≥2 mm; the thickness of the pressing part (11) is H2, and the thickness of the body (1) is H3; H1, H2 and H3 satisfy the relationship: H1=H2=H3; Along the length direction Y, the length of the clamping groove (14) is D5, and 50 mm≥D5≥30 mm.

2. PE pipe extraction aid according to claim 1, characterized in that The abutting and pressing part (11) is provided in plurality, the plurality of abutting and pressing parts (11) are arranged on both sides of the clamping part (12), and are connected with the clamping part (12) respectively; the plurality of abutting and pressing parts (11) and the clamping part (12) are arranged to form the card slot (2).

3. The PE pipe pull-out aid tool according to claim 1, characterized in that, The abutting and pressing part (11) and the clamping part (12) are integrally formed.

4. The PE pipe pull-out aid tool according to claim 1, characterized in that, The clamping part (12) is arranged to protrude away from the card slot (2) on the side of the body (1) away from the card slot (2), and the width of the clamping part (12) is less than the width of the body (1).

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