CN203636759U

CN203636759U - Pushing-in and taking-out device of piston subassembly of drilling pump

Info

Publication number: CN203636759U
Application number: CN201420010203.4U
Authority: CN
Inventors: 王治强
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-08
Filing date: 2014-01-08
Publication date: 2014-06-11
Anticipated expiration: 2024-01-08

Abstract

A pushing-in and taking-out device of a piston subassembly of a drilling pump comprises an outer thread ring and a threaded rod, wherein the threaded rod penetrates in the outer thread ring and is connected with inner threads of the outer thread ring; the rear end of the threaded rod is connected with a rotating handle; the front end of the threaded rod is connected with a gripping device; the gripping device comprises a tooth sleeve and a plurality of gripping teeth; the tooth sleeve sleeves the threaded rod; the gripping teeth are hinged to the periphery of the tooth sleeve; ends of the gripping teeth are provided with hooks; middles of the gripping teeth are elastically matched with the threaded rod through tension springs; a limiting chuck and an adjusting spring sleeve the threaded rod and between the outer thread ring and the gripping teeth; the front end of the limiting chuck is abutted to the bottoms of the gripping teeth in a clamped manner; the rear end of the limiting chuck is abutted to one end of the adjusting spring; the other end of the adjusting spring is fixed by a nut which is matched with the threaded rod; and the center of the front end of the threaded rod is movably connected with a rod-shaped pushing device. Compared with the prior art, the pushing-in and taking-out device has the advantages that the labor capacity is greatly reduced, the labor intensity of workers is reduced, the work efficiency is improved, and the safety factor is increased.

Description

The jacking of wellbore pump piston assembly, withdrawing device

Technical field

The utility model relates to wellbore construction apparatus field, particularly a kind of wellbore pump piston assembly jacking, withdrawing device.

Background technology

In wellbore construction process, wellbore pump piston needs frequent replacing, the method that traditional piston is installed and taken out wastes time and energy: be generally to use hammer, oil pipe to clash into, in whole installation and taking-up process, usually can cause piston cap, screw thread and scuffing of cylinder bore distortion, there is cut in cylinder sleeve, reduced piston, pull bar, cylinder sleeve even service life of cooling cylinder, and needed many people to coordinate while installing, labour intensity is large; For driller, changing piston is a high strength muscular labor of wasting time and energy, and in Renewal process, the thorny security incidents such as pin of touching easily occur knocking with the shock of crowbar of hammer, easily cause personal injury.

Utility model content

The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of jacking of wellbore pump piston assembly, withdrawing device of simple in structure, easy to operate, time saving and energy saving and safety and stability is provided.

The technical solution of the utility model is: comprise male thread circle and run through the threaded screw rod that its internal thread connects, the rear end of described threaded screw rod connects rotary handle, front end connects grabber, described grabber comprises and being sleeved on threaded screw rod and can be around the tooth cover of its rotation, the front end of tooth cover is provided with locking nut, and locking nut is fixed by alignment pin and threaded screw rod, the all upwards crawl teeth of hinged multiple ends buckle of tooth cover, the middle part of described crawl tooth forms resilient engagement by tension spring and threaded screw rod; On described male thread circle and the interdental threaded screw rod of crawl, be set with spacing chuck and regulating spring, the front end of wherein said spacing chuck and the bottom card that captures tooth by one end of, rear end and regulating spring against, and the degree that can regulate multiple crawl teeth mutually to gather by spacing chuck by the deformation quantity of change regulating spring; The other end of described regulating spring uses the nut coordinating with threaded screw rod to fix; The leading section central authorities of described threaded screw rod are also flexibly connected shaft-like propeller.

Such scheme can further be improved to:

Described rotary handle comprises hand draw ring and penetrates lever wherein.

It is cambered surface that described crawl tooth blocks with spacing chuck the bottom surface of leaning on mutually.

Described crawl tooth is three.

Compared with prior art, the utlity model has following advantage:

1. it is simple in structure easy to operate that piston is installed withdrawing device, is easy to processing, is convenient to promote, and light, Maintenance and Repair are easy.

2. the instrument using with respect to conventional replacing piston, this instrument 1 people's operation, reduces the amount of labour greatly, reduces labor strength, has increased safety coefficient.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is the A-A cutaway view in Fig. 1;

Fig. 3 is the B-B cutaway view in Fig. 1;

Fig. 4 is grabber and the schematic diagram that coordinates of locking cap;

In figure: 1, hand draw ring, 2, threaded screw rod, 3, male thread circle, 4, locking nut, 5, adjusting nut, 6, regulating spring, 7, capture tooth, 8, shaft-like propeller, 9, tooth cover, 10, tension spring, 11, spacing chuck, 12, piston, 13, locking cap, 14, groove, 15, alignment pin, 16, connect bearing pin.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described further.

Referring to Fig. 1, the jacking of a kind of wellbore pump piston assembly, withdrawing device, comprise male thread circle 3 and run through the threaded screw rod 2 that its internal thread connects, the rear end of threaded screw rod 2 connects rotary handle, front end connects grabber, grabber comprises and being sleeved on threaded screw rod 2 and can be around the tooth cover 9 of its rotation, tooth overlaps 9 weeks upwards by connecting the crawl tooth 7 of hinged three the end buckles of bearing pin 16, the front end of tooth cover 9 is provided with locking nut 4, locking nut 4 is fixing with threaded screw rod 2 by alignment pin 15, and locking nut 4 comes off when preventing that threaded screw rod 2 from rotating; Rotary handle comprises hand draw ring 1 and penetrates lever wherein; The middle part that captures tooth 7 forms resilient engagement by tension spring 10 and threaded screw rod 2; On threaded screw rod 2 between male thread circle 3 and crawl tooth 7, be set with spacing chuck 11 and regulating spring 6, wherein the front end of spacing chuck 11 and the bottom cambered surface card that captures tooth 7 by one end of, rear end and regulating spring 6 against, and the degree (it is cambered surface that crawl tooth 7 blocks with spacing chuck 11 bottom surface of leaning on mutually, convenient by regulating the stroke of spacing chuck 11 to change the degree of gathering that captures tooth 7) that can regulate each crawl tooth 7 mutually to gather by spacing chuck 11 by changing the deformation quantity of regulating spring 6; The other end of regulating spring 6 uses the adjusting nut 5 coordinating with threaded screw rod 2 fixing; The leading section central authorities of threaded screw rod 2 are provided with screwed hole, and are threaded connection shaft-like propeller 8, and shaft-like propeller 8 can adopt the iron staff crevice tool forming of polishing.

Better capture piston component in order to realize grabber, the outer end of the locking cap 13 of piston is the groove 14 that centrum and week upwards has a circle and be convenient to capture tooth 7 interlocks, and the degree of depth can be 1cm.

When piston is installed (now spacing chuck 11 and grabber can disassemble), piston 12 and locking cap 13 are put into cylinder sleeve, then male thread circle 3 and cylinder sleeve collar extension are fixed to (can adopt engage thread to fix), by the outer end of the leading section of shaft-like propeller 8 and locking cap 13 against, then rotate threaded screw rod 2 piston 12 slowly advanced to cylinder sleeve.

While taking out piston 12, shaft-like propeller 8 is unloaded, install spacing chuck 11 and grabber, by changing the deformation quantity (by rotation adjusting nut 5) of regulating spring 6, regulate each to capture the applicable degree of gathering that reaches of tooth 7; Then equally male thread circle 3 and cylinder sleeve collar extension are fixed, then rotating threaded screw rod 2 moves ahead grabber, while capturing the centrum of tooth 7 process locking cap 13 outer ends, capturing tooth 7 outwards scatters gradually, in the time reaching groove 14, capture tooth 7 auto-polymerization under spring force effect and make its hook portion and groove 14 interlocks, then opposite spin threaded screw rod 2 can pull out piston component by grabber.

By test, in operating process, 1 piston of replacing in the past needs 3 people operating efficiency of 1 hour to compare, adopt after this instrument, can within half an hour, just more finish changing 1 piston by 1 people, greatly saved the time, alleviate labour intensity, improve operating efficiency, and potential safety hazard while greatly reducing work, the operation in hazardous environment avoided.

For those skilled in the art, do not departing under the prerequisite of the utility model principle, likely to concrete size, or partial structurtes make some improvements and modifications, and these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. wellbore pump piston assembly jacking, withdrawing device, it is characterized in that: comprise male thread circle and run through the threaded screw rod that its internal thread connects, the rear end of described threaded screw rod connects rotary handle, front end connects grabber, described grabber comprises and being sleeved on threaded screw rod and can be around the tooth cover of its rotation, the front end of tooth cover is provided with locking nut, and locking nut is fixed by alignment pin and threaded screw rod, the all upwards crawl teeth of hinged multiple ends buckle of tooth cover, the middle part of described crawl tooth forms resilient engagement by tension spring and threaded screw rod; On described male thread circle and the interdental threaded screw rod of crawl, be set with spacing chuck and regulating spring, the front end of wherein said spacing chuck and the bottom card that captures tooth by one end of, rear end and regulating spring against, and the degree that can regulate multiple crawl teeth mutually to gather by spacing chuck by the deformation quantity of change regulating spring; The other end of described regulating spring uses the nut coordinating with threaded screw rod to fix; The leading section central authorities of described threaded screw rod are also flexibly connected shaft-like propeller.

2. wellbore pump piston assembly according to claim 1 jacking, withdrawing device, is characterized in that: described rotary handle comprises hand draw ring and penetrates lever wherein.

3. wellbore pump piston assembly according to claim 1 and 2 jacking, withdrawing device, is characterized in that: it is cambered surface that described crawl tooth blocks with spacing chuck the bottom surface of leaning on mutually.

4. wellbore pump piston assembly according to claim 3 jacking, withdrawing device, is characterized in that: described crawl tooth is three.