CN209095465U - A kind of screw thread extracts set device - Google Patents

Abstract

The utility model discloses a kind of screw threads to extract set device, including shell, the internal slide of the shell is provided with tension mandrel, the both ends of the tension mandrel run through shell and extend to the outside of shell, the right end of the tension mandrel is fixedly connected with threaded rod, and tension mandrel and threaded rod are structure as a whole, the surface of the threaded rod has been connected through a screw thread adjusting nut, the left end of the shell is provided with tensioner head, and the tensioner head is structure as a whole with shell, the left end of tension mandrel is adapted with the inside of tensioner head；The screw thread extracts set device; short time can remove thread bush; have the advantages that structure is simple, easy to operate low with use cost; greatly improve the repair schedule of equipment; the popularization and use for being conducive to overhaul installation enterprises, in addition, the screw thread extracts device in the process of disassembly; the threaded body with thread bush cooperation is not damaged, completing screw thread and extract to effectively protect the overall structure of equipment on the basis of work.

Description

A kind of screw thread extracts set device

Technical field

The utility model relates to thread bush detaching equipment technical field, specially a kind of screw thread extracts set device.

Background technique

Currently, thread-locking ring heat exchanger is generally used in oil plant hydrogenation plant, according to present when which overhauls Technique, usually there is inside and outside circle hold-down bolt on thread-locking ring and the dismounting of retaining ring screw thread be difficult, twist it is motionless, it is time-consuming Arduously, the bolt proportion of goods damageds are high, by changing construction technology, permeated before dismounting to the bolt of locking loop system, scale removal and profit Sliding processing is dismantled to the bolt design specialized equipment not come out is twisted, fast, is efficiently accomplished to thread-locking ring heat exchanger Maintenance, since thread-locking ring heat exchanger inner member is more, matching requirements precision is high, the screw-threaded coupling that a diameter is 1 point 5 meter Its fastening of ring heat exchanger with to connect bolt quantity more, reached nearly 300, the nominal diameter span of bolt is big, and maximum is to lock Tight ring screw thread reaches M1700, and the smallest is M12, and bolt strength grade is high, and the material of these bolts is all GrMo steel alloy, by force It is high to spend high rigidity.

Currently, the disassembly for thread bush, needs to dismantle thread bush using more accurate equipment, processing cost It is higher, it is not easy to be widely popularized, and during dismounting, difficulty is larger, it is time-consuming most, it greatly affected the maintenance of equipment Progress.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of screw thread and extracts set device, solves existing screw thread Set disassembly, difficulty is larger, the problem of taking a long time.

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of screw thread extracts set device, wraps Shell is included, the internal slide of the shell is provided with tension mandrel, and the both ends of the tension mandrel are run through the shell and prolonged The outside of the shell is extended to, the right end of the tension mandrel is fixedly connected with threaded rod, and tension mandrel and threaded rod are one Body structure, the surface of the threaded rod have been connected through a screw thread adjusting nut, and the left end of the shell is provided with tensioner head, and institute Tensioner head is stated to be structure as a whole with shell.

Further, the left end of the tension mandrel is adapted with the inside of tensioner head, tension mandrel left end appearance Face is provided with the first inclined-plane, and the tensioner head inner surface is correspondingly arranged on the second inclined-plane.

Further, the gradient on first inclined-plane and the second inclined-plane is 2:15.

Further, tensioner head left end offers cross notch.

Further, elastic ring is provided on the left of the tensioner head.

Further, square head is fixedly connected on the right side of the case surface, and the square head is integrated with shell Structure.

Further, the square head cross section outer profile is rectangle.

Further, the shell is internally provided with the sliding rail being used cooperatively with tension mandrel.

Further, the shell, tensioner head and square head axis are overlapped.

Compared with prior art, the utility model has the beneficial effects that

The screw thread extracts set device, by that will turn clockwise adjusting nut, adjusting nut taking set device to protrude into thread bush Drive threaded rod mobile, threaded rod drives tension mandrel to move backward, and so that the one end of tension mandrel with taper is squeezed tensioner head, makes Tensioner head opens, and the groove opened up on tensioner head and thread bush is contacted, and slowly rotates clockwise the circle of adjusting nut 3, makes tensioner Head may enter in groove, make tensioner head clamping thread bush, and the square head of set device is taken with spanner twisting, and square head drives shell rotation, Shell drives thread bush rotation, can carry out thread bush back-out, easy to operate, use cost is lower, greatly improves and sets Standby repair schedule is conducive to extensive enterprise and promotes, it is only necessary to and two hours can remove thread bush, save the take-down time, And in the process of disassembly, the screw thread that will not damage thread bush, improves the practicality.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the structural schematic diagram of the utility model tensioner head；

Fig. 3 is the partial enlarged view in the utility model Fig. 1 at A.

In figure: 1- shell, 2- tension mandrel, the first inclined-plane 201-, 3- threaded rod, 4- adjusting nut, 5- tensioner head, The second inclined-plane 501-, 6- elastic ring, 7- square head.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1-3, the utility model provides a kind of technical solution: a kind of screw thread extracts set device, including shell 1, outside The internal slide of shell 1 is provided with tension mandrel 2, and the both ends of tension mandrel 2 run through the shell 1 and extend to the shell 1 Outside, the right end of tension mandrel 2 is fixedly connected with threaded rod 3, and tension mandrel 2 and threaded rod 3 are structure as a whole, threaded rod 3 surface has been connected through a screw thread adjusting nut 4, and the left end of shell 1 is provided with tensioner head 5, and tensioner head 5 and shell 1 are one The left end of body structure, tension mandrel 2 is adapted with the inside of tensioner head 5, and 2 left end outer surface of tension mandrel is provided with the first inclined-plane 201,5 inner surface of tensioner head is correspondingly arranged on the second inclined-plane 501, and the gradient on the first inclined-plane 201 and the second inclined-plane 501 is 2:15, Therefore, by can be calculated one button of the rotation of adjusting nut 4, the correspondence swell value of tensioner head 5 achieves that tensioner head 5 rises in this way It largely accurately calculates, unlikely on the basis of ensuring to thread bush tensioner thread damage occur, 5 left end of tensioner head offers ten Word notch, cross notch divide tensioner head 5 for four plates, and it is perpendicular be correspondingly arranged, four plate size shapes are consistent, rise The left side of tight head 5 is provided with elastic ring 6, square head 7 is fixedly connected on the right side of 1 surface of shell, and square head 7 is with shell 1 Integral structure, square head 7 is for engaging spanner, spanner rotation case 1 convenient to use, so that tensioner head 5 is driven to rotate thread bush, The taking-up that thread bush can be realized, has been saved the take-down time, and shell 1 is internally provided with the cunning being used cooperatively with tension mandrel 2 Rail, when adjusting nut 4 being avoided to rotate, the axial-rotation in shell 1 of tension mandrel 2,7 axis of shell 1, tensioner head 5 and square head It is overlapped, and three can realize integrated movement.

In use, firstly, being mutually perpendicular in thread bush up and down is processed 0.5mm's with triangular file or interior hole saw Groove turns adjusting nut 4 taking set device to protrude into thread bush clockwise, when the side of adjusting nut 4 resists shell 1, spiral shell Rasp bar 3 is moved backward with respect to adjusting nut 4, so that tension mandrel 2 be driven to move backward, makes tension mandrel 2 with one end of taper 5 inner wall of tensioner head is squeezed, makes 5 spreading of tensioner head, so that the groove opened up on 5 outer wall of tensioner head and thread bush contacts, makes tensioner First 5 clamping thread bush；Then, the square head 7 of set device is taken with spanner twisting, square head 7 drives shell 1 to rotate, and shell 1 drives spiral shell Line set rotation, can carry out thread bush back-out；After use, adjusting nut 4, the opposite adjustment spiral shell of threaded rod 3 are rotated counterclockwise Mother 4 moves forward, and after being moved to certain distance, Manual press tension mandrel 2, the first inclined-plane 201 is detached from from the second inclined-plane 501, So that tensioner head 5 shrinks and is detached from from thread bush.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (9)

1. a kind of screw thread extracts set device, including shell (1), it is characterised in that: the internal slide of the shell (1) is provided with tensioner The both ends of mandrel (2), the tension mandrel (2) run through the shell (1) and extend to the outside of the shell (1), described The right end of tension mandrel (2) is fixedly connected with threaded rod (3), and tension mandrel (2) and threaded rod (3) are structure as a whole, described The surface of threaded rod (3) has been connected through a screw thread adjusting nut (4), and the left end of the shell (1) is provided with tensioner head (5), and The tensioner head (5) is structure as a whole with shell (1).

2. a kind of screw thread according to claim 1 extracts set device, it is characterised in that: the left end of the tension mandrel (2) with The inside of tensioner head (5) is adapted, and tension mandrel (2) the left end outer surface is provided with the first inclined-plane (201), the tensioner head (5) inner surface is correspondingly arranged on the second inclined-plane (501).

3. a kind of screw thread according to claim 2 extracts set device, it is characterised in that: first inclined-plane (201) and second The gradient on inclined-plane (501) is 2:15.

4. a kind of screw thread according to claim 1 extracts set device, it is characterised in that: tensioner head (5) left end offers Cross notch.

5. a kind of screw thread according to claim 1 extracts set device, it is characterised in that: the left side of the tensioner head (5) is arranged Flexible circle (6).

6. a kind of screw thread according to claim 1 extracts set device, it is characterised in that: the right side on shell (1) surface is solid Surely it is connected with square head (7), and the square head (7) is structure as a whole with shell (1).

7. a kind of screw thread according to claim 6 extracts set device, it is characterised in that: outside described square head (7) cross section Profile is rectangle.

8. a kind of screw thread according to claim 1 extracts set device, it is characterised in that: shell (1) is internally provided with The sliding rail being used cooperatively with tension mandrel (2).

9. a kind of screw thread according to claim 1 extracts set device, it is characterised in that: the shell (1), tensioner head (5) and Square head (7) axis is overlapped.