CN202578602U

CN202578602U - Fish top trimmer

Info

Publication number: CN202578602U
Application number: CN 201220193513
Authority: CN
Inventors: 肖德石; 刘春友; 胡莹
Original assignee: Liaoning Petroleum Machinery Manufacturing Co Ltd
Current assignee: Liaoning Petroleum Machinery Manufacturing Co Ltd
Priority date: 2012-04-28
Filing date: 2012-04-28
Publication date: 2012-12-05
Anticipated expiration: 2022-04-28

Abstract

The utility model relates to a fish top trimmer which comprises an upper joint, a bell mouth, a central spindle and a guide shoe, wherein the upper end of the upper joint is connected with a drill string by a thread, and the inside of the lower end is hollow and is provided with an internal thread; the lower end of the upper joint is connected with the central spindle by a thread; the upper end of the bell mouth is connected with the central spindle by a thread, and the lower end is provided with an external thread connected with the guide shoe; and the upper end of the guide shoe is connected with the bell mouth by a thread, and a push-in cut is arranged at the lower end. The fish top trimmer provided by the utility model has reasonable structure design and high working efficiency, and can be widely used for trimming the fish top.

Description

The top of fish trimmer

Technical field

The utility model relates to a kind of repair outfit, particularly relates to a kind of top of fish trimmer.

Background technology

The top of fish trimmer is used for repairing the instrument of the duck top of fish of oval top of fish and less bending.Present top of fish repair outfit, unreasonable structure for damaging more serious top of fish, can't be trimmed to the circularity of being convenient to salvage, and must be used other and repair facility, thereby increase labour intensity, has influenced operating efficiency.

Summary of the invention

The utility model has overcome deficiency of the prior art, and a kind of reasonable in design is provided, easy to operate top of fish trimmer.

In order to address the above problem, the utility model adopts following technical scheme:

The top of fish trimmer comprises top connection, horn mouth, mandrel and guide shoe, and the top connection upper end is adopted with drill string and is threaded, lower end inner hollow and band internal thread, and the top connection lower end is adopted with mandrel and is threaded; The horn mouth upper end is adopted with mandrel and is threaded, and the lower end has and the joining external screw thread of guide shoe, has on the guide shoe with the horn mouth employing to be threaded, and the lower end has dials in otch.

Compared with prior art, the beneficial effect of the utility model is:

The utility model reasonable in design, easy to use, no matter top of fish has or not splitting, can both top of fish be trimmed to the circularity of being convenient to salvage, need not to use other ancillary services, thereby reduced operation labour intensity, improved operating efficiency.

Description of drawings

Fig. 1 is the utility model structural representation.

The specific embodiment

The top of fish trimmer, as shown in Figure 1, comprise top connection 1, horn mouth 2, mandrel 3 and guide shoe 4, top connection 1 upper end is adopted with drill string and is threaded, lower end inner hollow and band internal thread, top connection 1 lower end is adopted with mandrel 3 and is threaded; Horn mouth 2 upper ends and mandrel 3 adopts and is threaded, and the lower end has and guide shoe 4 joining external screw threads, and guide shoe 4 upper ends have to adopt with horn mouth 2 and are threaded, and the lower end has dials in otch.

Horn mouth 2 upper ends have and mandrel 3 joining internal threads, and the lower end has and guide shoe 4 joining external screw threads, and it is 1: 8 the conical surface that there is tapering its lower end, and an equal diameter hollow cylinder stable section is arranged between the conical surface and mandrel 3 screw threads.Mandrel 3 upper ends have and horn mouth 2 joining external screw threads, and the lower end is 1: 6 a cone of tapering.In the middle of cone and external screw thread, first-class diameter circle cylinder stable section is arranged, stable section in the horn mouth 2 and the stable section on the mandrel 3 are in same position just, can repair simultaneously tubing string endoporus and cylindrical.

Guide shoe 4 longer dimensions generally should be longer than 1.5mm, and it acts on as follows:

Variation when (1) being convenient to observe guide shoe 4 and bumping fish and go into shaping behind the fish.

(2) guarantee that mandrel 3 can get into the fish chamber smoothly.

When (3) guaranteeing mandrel 3 centering fish chambeies the enough length that moves up and down can be arranged, transfer or can produce enough shaping impact forces during drilling string not well braked.

Claims

1. the top of fish trimmer is characterized in that, comprises top connection, horn mouth, mandrel and guide shoe, and the top connection upper end is adopted with drill string and is threaded, lower end inner hollow and band internal thread, and the top connection lower end is adopted with mandrel and is threaded; The horn mouth upper end is adopted with mandrel and is threaded, and the lower end has and the joining external screw thread of guide shoe, has on the guide shoe with the horn mouth employing to be threaded, and the lower end has dials in otch.