CN207736239U - A kind of tool for taking out fracture pipe fitting - Google Patents

Abstract

The utility model discloses a tool for taking out a broken pipe joint, which comprises a chuck and a pull rod. The pull rod passes through the center of the chuck and is movably connected with the chuck. The pushing block is provided with a plurality of claws, which are uniformly arranged along the circumferential direction of the chuck, and the other end of the pull rod is connected with a tensioning mechanism capable of moving the claws outward along the radial direction of the chuck. The utility model is simple in structure, novel and reasonable in design, and its shape is similar to the pliers commonly used in daily life. When in use, only the claws need to be inserted into the broken pipe joint, and the handle is moved, and the claws will move outward along the radial direction of the chuck. Move until it is in close contact with the broken pipe joint, and then turn the handle to take out the external thread joint in the broken pipe joint.

Description

A tool for removing a broken pipe joint

technical field

The utility model belongs to the field of tools, in particular to a tool for taking out broken pipe joints.

Background technique

The pipe thread connection method is easy to disassemble and low in price, so it is the most widely used in the pipeline system. The external threads of the existing external thread pipe joints are usually processed by cutting, and the connection strength and other properties of the external thread joints produced in this way are often lower. It is easy to break the pipe joint during the use process. Now, more and more water, gas and other supply pipes are installed in a hidden way, that is, the supply pipes are hidden in the wall, and only the valves, faucets, etc. are exposed outside, so as to bring visual comfort to people. However, faucets, gas valves, and water pipes will age after long-term use, and the seals will not be tight. During maintenance and replacement, the connecting pipes or joints are easy to break near the threaded joints. It will cause a section of external threaded pipe joint to be broken in the internal threaded pipe joint. At this time, it is necessary to take out a section of external threaded pipe joint broken in the internal threaded pipe. Since there is little or no exposed part of the broken male threaded pipe joint (as shown in Figure 1), it is impossible to use tools such as pliers to take it out. Some maintenance personnel use manual sawing to remove the broken external threaded joint, but this method is time-consuming and laborious, and sometimes may damage the internal threaded pipe joint. Therefore, it is necessary to propose a special removal tool for the fractured external threaded pipe joint.

Regarding the tool for removing the broken pipe thread, many schemes have also been proposed in existing patents both at home and abroad. For example, the Chinese patent with the application number 03217497.7 discloses an "internal broken pipe extractor", which wedges the broken external threaded pipe joint through a triangular wedge, and rotates the positioning sleeve that is tightly embedded with the triangular wedge through frictional force. The broken pipe is unscrewed from the pipe. Although this design is simple in structure, it is only suitable for broken external thread pipe joints that are not easily deformed and easy to be unscrewed. The Chinese patent application number 200510032808.9 discloses "a tool for dismantling a broken pipe joint", which squeezes a single-edged or six-edged chuck into a broken pipe joint with an external thread by external force, and then rotates the chuck. The method of dismantling the broken pipe joint, the reliability of this scheme is poor, if the hammering force applied is small, it is easy to cause the chuck to slide in the pipe joint due to insufficient friction, and if the hammering force is large, it may cause impact on the pipe joint accidental damage. The Chinese patent with the application number 201610260384.X discloses an "electric remover for broken pipe joints". In this scheme, three sets of tensioning devices are set up to fix the support seat on the pipe joint by tensioning the inner support. The device realizes the radial feed adjustment and circumferential rotation adjustment of the saw blade in the cutting device, and drives the saw blade to reciprocate through the driving device to cut the broken pipe joint. The structure of this solution is relatively complicated, the processing and manufacturing is difficult, and the volume is relatively large, so it is not convenient for pipeline maintenance personnel to carry it around.

Utility model content

The technical problem to be solved by the utility model is to provide a tool for taking out a broken pipe joint in view of the above-mentioned deficiencies in the prior art. The tool has a simple structure and a novel and reasonable design. By setting the jaws, the chuck and the tensioning mechanism, the broken pipe joint can be tightened, so that the broken external threaded pipe joint can be easily rotated and taken out.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a tool for taking out a broken pipe joint, which is characterized in that it includes a chuck and a pull rod, and the pull rod passes through the center of the chuck and is movably connected with the chuck. One end of the pull rod is provided with a push block, and the chuck is provided with a plurality of claws around the push block, and the plurality of claws are evenly arranged along the circumferential direction of the chuck, and the other end of the pull rod is connected with a claw that enables A tensioning mechanism that moves radially outward from the chuck.

The above-mentioned tool for taking out a broken pipe joint is characterized in that: the tensioning mechanism includes a handle and a knurled nut, the number of the handle is two, and the two handles are rotatably mounted on the chuck And symmetrically arranged on both sides of the pull rod, the knurled nut is set on the pull rod, the knurled nut is set with a connecting block, a connecting rod is arranged between the two handles and the connecting block, and one end of the connecting rod rotates It is installed on the connection block, and the other end is rotatably installed on the handle on the same side as the connection block.

The above-mentioned tool for taking out a broken pipe joint is characterized in that: the knurled nut is provided with a spacer for limiting the position of the connecting block, and is used for pressing the spacer against the roller. Compression nut on flower nut.

The above-mentioned tool for taking out a broken pipe joint is characterized in that: the handle is pierced with a first pin, the connecting block is pierced with a second pin, and one end of the connecting rod is rotatably mounted on the second pin. On one pin, the other end is rotatably mounted on the second pin, and the ends of the first pin and the second pin are provided with holes, and a cotter pin for preventing axial movement of the pin is provided in the hole .

The above-mentioned tool for taking out a broken pipe joint is characterized in that: bolts perpendicular to the pull rod are pierced on the chuck, the number of the bolts is two, the two bolts are arranged symmetrically, and the two bolts pass through The parts where the chuck exits are all provided with external threads, the parts where the two bolts go out of the chuck are fitted with gaskets and nuts matching the external threads, and the handle is rotatably mounted on the bolts on the same side.

The above-mentioned tool for taking out a broken pipe joint is characterized in that: one end of the pull rod is thick and the other end is thin, and both ends are provided with external threads, and the thicker end of the pull rod passes through the knurled nut of the tensioning mechanism. Thread the thin end through the push block.

The above-mentioned tool for taking out a broken pipe joint is characterized in that: the push block is a truss structure with one end large and the other end small, a pull rod installation hole is opened in the middle of the push block and along the axial direction of the push block, and the pull rod The end passes through the installation hole of the pull rod to pass through the push block in the direction from the smaller end to the larger end of the push block, and the part of the pull rod passing through the push block is covered with a washer and a nut; the truss structure includes two parallel A plane and a first slope between the two parallel planes, the number of the first slope is the same as the number of claws.

The above-mentioned tool for taking out a broken pipe joint is characterized in that: the side of the chuck provided with claws is provided with a central pit and a plurality of slide grooves communicating with the central pit, so The number of the chute is the same as the number of the claws. The claws include a slider arranged in the chute and a handle fixedly connected to the slider. The inner side is provided with a second inclined surface matched with the first inclined surface, a rib plate for connecting the slider and the gripper is provided between the slider and the gripper, and the chuck is installed with a slider so that the slider is always in the The cover plate in the chute is installed on the chuck by screws.

The above-mentioned tool for taking out a broken pipe joint is characterized in that the slider, the handle and the rib plate are of an integrated structure, and chamfers are provided between two adjacent first slopes.

The above-mentioned tool for taking out a broken pipe joint is characterized in that a key is provided between the push block and the pull rod.

Compared with the prior art, the utility model has the following advantages:

1. The utility model is simple in structure, novel and reasonable in design. It is a purely mechanical manual tool with high reliability and easy use. You only need to hold the handle with both hands and turn it gently to take out the broken external threaded pipe joint.

2. The utility model can tighten the broken pipe joint by setting claws, chucks, pull rods and tensioning mechanism, so that the broken external threaded pipe joint can be easily rotated and taken out. When in use, only one application of force is required. The claws can always tighten the broken external threaded pipe joint.

3. The tool of the utility model is similar in shape to the pliers commonly used in daily life, and the way of applying force during use is also the same, which satisfies the usage habits of users.

4. The tool of the utility model is easy to manufacture and is suitable for mass production.

The technical solution of the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Figure 1 is a cross-sectional view of a fractured pipe joint.

Fig. 2 is the front view of the utility model tool.

Fig. 3 is a left view of the utility model tool.

Fig. 4 is a sectional view of the utility model tool.

FIG. 5 is a partial enlarged view of A in FIG. 4 .

Fig. 6 is a B-B sectional view of Fig. 4 .

Fig. 7 is a top view of the utility model tool.

FIG. 8 is a partial enlarged view of point C in FIG. 7 .

Fig. 9 is an exploded schematic diagram of the cover plate and claws of the present invention.

Fig. 10 is a schematic structural view of the chuck of the present invention.

Fig. 11 is a left side view of Fig. 10 .

Fig. 12 is a schematic structural view of the claw of the present invention.

Fig. 13 is a left side view of Fig. 12 .

Fig. 14 is a schematic structural view of the pushing block of the present invention.

Fig. 15 is a schematic diagram of the state of the tool of the utility model when it is in use.

Explanation of reference signs:

1—broken pipe joint; 1-1—internal threaded pipe joint; 1-2—external threaded pipe joint;

2—jaw; 2-1—slider; 2-2—handle;

2-3—rib plate; 2-4—second slope; 3—cover plate;

4—chuck; 4-1—chute; 4-2—central pit;

5—tension mechanism; 5-1—bolt; 5-2—first pin;

5-3—handle; 5-4—connecting rod; 5-5—knurled nut;

5-6—connection block; 5-7—limit washer; 5-8—compression nut;

5-9—cotter pin; 5-10—second pin; 5-11—first gasket;

5-12—first nut; 6—pull rod; 7—pushing block;

7-1—tie rod installation hole; 7-2—the first slope; 7-3—chamfering;

8—Inner hexagon screw; 9—Key; 10—Second washer;

11—the second nut.

Detailed ways

As shown in Fig. 2, Fig. 3, Fig. 6 and Fig. 8, the tool for taking out the fractured pipe joint of the present utility model includes a chuck 4 and a pull rod 6, and the pull rod 6 passes through the center of the chuck 4 and connects with the chuck 4. Flexible connection, one end of the pull rod 6 is provided with a push block 7, and a plurality of claws 2 are arranged around the push block 7 on the chuck 4, and a plurality of the claws 2 are evenly arranged along the circumferential direction of the chuck 4. The other end of the pull rod 6 is connected with a tensioning mechanism 5 capable of moving the jaws 2 outward along the radial direction of the chuck 4 .

As shown in Figure 4 and Figure 5, in this embodiment, the tensioning mechanism 5 includes a handle 5-3 and a knurled nut 5-5, the number of the handle 5-3 is two, and the two handles 5-3 are all rotatably installed on the chuck 4 and symmetrically arranged on both sides of the pull rod 6. The knurled nut 5-5 is sleeved on the pull rod 6, and the knurled nut 5-5 is sleeved with a connecting block 5-6. A connecting rod 5-4 is arranged between the handle 5-3 and the connecting block 5-6, one end of the connecting rod 5-4 is rotatably mounted on the connecting block 5-6, and the other end is rotatably mounted on the connecting block 5-6. On the handle 5-3 on the same side as the block 5-6.

As shown in Figure 5, in this embodiment, the knurled nut 5-5 is provided with a stop washer 5-7 for limiting the position of the connecting block 5-6, and is used to place the stop washer 5-7 Compress the compression nut 5-8 on the knurled nut 5-5.

As shown in Figure 4, Figure 5 and Figure 7, in this embodiment, the handle 5-3 is pierced with a first pin 5-2, and the connecting block 5-6 is pierced with a second pin 5- 10. One end of the connecting rod 5-4 is rotatably mounted on the first pin 5-2, and the other end is rotatably mounted on the second pin 5-10. The end of the first pin 5-2 and the second pin The ends of 5-10 are all provided with holes, and cotter pins 5-9 for preventing the axial movement of the pins are arranged in the holes.

As shown in Figure 7, in this embodiment, the chuck 4 is provided with bolts 5-1 perpendicular to the pull rod 6, the number of the bolts 5-1 is two, and the two bolts 5-1 are arranged symmetrically , the parts where the two bolts 5-1 pass through the chuck 4 are provided with external threads, and the parts where the two bolts 5-1 pass through the chuck 4 are set with gaskets and nuts that match the external threads, so Said handle 5-3 is rotatably installed on the bolt 5-1 on the same side thereof.

As shown in Figure 4, Figure 5, Figure 7 and Figure 8, in this embodiment, one end of the pull rod 6 is thick and the other end is thin, and both ends are provided with external threads, and the thicker end of the pull rod 6 passes through the tensioning mechanism 5 Knurled nut 5-5, and the thinner end passes push block 7.

As shown in Figures 8 and 14, in this embodiment, the push block 7 is a truss structure with one end large and the other end small, and a pull rod installation hole 7-1 is opened in the middle of the push block 7 and along the axial direction of the push block 7 , the end of the pull rod 6 goes through the push block 7 through the pull rod installation hole 7-1 in the direction from the smaller end of the push block 7 to the larger end, and the part of the pull rod 6 passing through the push block 7 is covered with a gasket and a nut The frustum structure includes two parallel planes and a first slope 7-2 located between the two parallel planes, the number of the first slopes 7-2 is the same as the number of claws 2 .

As shown in Fig. 10, Fig. 11, Fig. 12 and Fig. 13, in this embodiment, the side of the chuck 4 provided with the claw 2 is provided with a central pit 4-2 and is connected with the central pit 4. -2 connected multiple chute 4-1, the number of the chute 4-1 is the same as the number of the claw 2, the claw 2 includes a slider 2-1 arranged in the chute 4-1 And the gripper 2-2 fixedly connected on the slider 2-1, the inner side of the slider 2-1 is in clearance fit with the pull rod 6, and the inner side of the gripper 2-2 is provided with the first inclined surface 7-2 The matched second inclined surface 2-4, the rib plate 2-3 for connecting the slider 2-1 and the gripper 2-2 is arranged between the slider 2-1 and the gripper 2-2, the card The cover plate 3 that makes the slider 2-1 always be located in the chute 4-1 is installed on the disk 4, and the cover plate 3 is installed on the chuck 4 through the screw 8; the first inclined surface 7-2 and the second inclined surface 2- The inclination angles of 4 are equal and smaller than the critical friction angle of the contact portion between the push block 7 and the handle 2-2, so that the push block 7 can realize self-locking.

As shown in Fig. 14, in this embodiment, the slider 2-1, the gripper 2-2 and the rib 2-3 are of an integrated structure, and a downturn is provided between two adjacent first slopes 7-2. Corner 7-3.

As shown in FIG. 8 , in this embodiment, a key 9 is provided between the push block 7 and the pull rod 6 .

In this embodiment, preferably, the number of claws 2 is three, and the number of corresponding first slopes 7-2 and the number of slide grooves 4-1 are both three.

When the tool of the present utility model is in use, the operator needs to hold the handle 5-3 of the tool by hand, and insert the claw 2 of the tool into the broken external threaded pipe joint 1-2, as shown in Figure 8 and Figure 15, Adjust the knurled nut 5-5 to a suitable position, then hold the handle 5-3 firmly, the force acts on the knurled nut 5-5 through the connecting rod 5-4, and the knurled nut 5-5 transmits the force to the pull rod 6. The pull rod 6 drives the push block 7 to move along the axis. Since the push block 7 is provided with an inclined surface, when the push block 7 moves along the axis of the pull rod 6, it will push the claw 2 to move outward, and the claw 2 can move the broken The external threaded pipe joint 1-2 is tightened, and now the handle 5-3 is turned to unscrew the broken external threaded pipe joint 1-2.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (10)

1. A tool for taking out a broken pipe joint, characterized in that: it includes a chuck (4) and a pull rod (6), and the pull rod (6) passes through the center of the chuck (4) to move with the chuck (4) connected, one end of the pull rod (6) is provided with a push block (7), and a plurality of claws (2) are arranged around the push block (7) on the chuck (4), and a plurality of the claws (2) are arranged along the The circumferential direction of the chuck (4) is uniformly arranged, and the other end of the pull rod (6) is connected with a tensioning mechanism (5) that enables the claw (2) to move outward along the radial direction of the chuck (4). 2. A tool for taking out a broken pipe joint according to claim 1, characterized in that: the tensioning mechanism (5) includes a handle (5-3) and a knurled nut (5-5), the The quantity of the handles (5-3) is two, and the two handles (5-3) are all rotatably mounted on the chuck (4) and symmetrically arranged on both sides of the pull rod (6), and the knurled nuts ( 5-5) Set on the pull rod (6), the knurled nut (5-5) is set with the connection block (5-6), the two handles (5-3) and the connection block (5-6) Connecting rods (5-4) are arranged between them, one end of the connecting rod (5-4) is rotatably mounted on the connecting block (5-6), and the other end is rotatably mounted on the same side as the connecting block (5-6). on the handle (5-3). 3. A tool for taking out a broken pipe joint according to claim 2, characterized in that: the knurled nut (5-5) is provided with a stop for limiting the position of the connecting block (5-6) A washer (5-7), and a compression nut (5-8) for pressing the limit washer (5-7) onto the knurled nut (5-5). 4. A tool for taking out a broken pipe joint according to claim 2, characterized in that: the handle (5-3) is pierced with a first pin (5-2), and the connecting block ( 5-6) is pierced with a second pin (5-10), one end of the connecting rod (5-4) is rotatably mounted on the first pin (5-2), and the other end is rotatably mounted on the second pin ( 5-10), the end of the first pin (5-2) and the end of the second pin (5-10) are provided with holes, and the holes are provided with holes for preventing the axial movement of the pins. Cotter pins (5-9). 5. A tool for taking out a broken pipe joint according to claim 2, characterized in that: said chuck (4) is pierced with a bolt (5-1) perpendicular to the pull rod (6), so that The quantity of said bolts (5-1) is two, and the two bolts (5-1) are symmetrically arranged, and the parts where the two bolts (5-1) pass through the chuck (4) are all provided with external threads, and the two bolts (5-1) are provided with external threads. (5-1) The parts that pass through the chuck (4) are fitted with washers and nuts that match the external threads, and the handle (5-3) rotates the bolt (5-1) that is installed on the same side )superior. 6. A tool for taking out a broken pipe joint according to claim 2, characterized in that: one end of the pull rod (6) is thick and the other end is thin, and both ends are provided with external threads, and the pull rod (6) is thicker One end passes through the knurled nut (5-5) of the tensioning mechanism (5), and the thinner end passes through the push block (7). 7. A tool for taking out a broken pipe joint according to claim 1, characterized in that: the push block (7) is a truss structure with one end large and the other end small, the middle part of the push block (7) and along the The push block (7) is provided with a pull rod installation hole (7-1) in the axial direction, and the end of the pull rod (6) passes through the pull rod installation hole (7-1) according to the direction from the smaller end of the push block (7) to the larger end. The direction of one end passes through the push block (7), and the part of the pull rod (6) passing through the push block (7) is covered with a gasket and a nut; the truss structure includes two parallel planes and is located between the two parallel planes. first slope of (7-2), the number of the first slope (7-2) is the same as the number of the jaws (2). 8. A tool for taking out a broken pipe joint according to claim 7, characterized in that: the chuck (4) is provided with a central pit (4- 2) and a plurality of chutes (4-1) communicated with the central pit (4-2), the number of the chutes (4-1) is the same as the number of the jaws (2), the Claw (2) comprises the slide block (2-1) that is arranged in the chute (4-1) and the gripper (2-2) that is fixedly connected on the slide block (2-1), described slide block ( The inner side of 2-1) is in clearance fit with the pull rod (6), and the inner side of the handle (2-2) is provided with a second inclined surface (2-4) matched with the first inclined surface (7-2). A rib plate (2-3) for connecting the slider (2-1) and the gripper (2-2) is arranged between the slider (2-1) and the gripper (2-2), and the chuck ( 4) A cover plate (3) that makes the slide block (2-1) always be located in the chute (4-1) is installed on the top, and the cover plate (3) is installed on the chuck (4) by screws (8). 9. A tool for taking out a broken pipe joint according to claim 8, characterized in that: said slider (2-1), gripper (2-2) and rib (2-3) are In an integral structure, a chamfer (7-3) is provided between two adjacent first slopes (7-2). 10. A tool for taking out a broken pipe joint according to any one of claims 1 to 9, characterized in that: a key (9) is provided between the pushing block (7) and the pull rod (6) ).