CN210370614U - Telescopic ejector rod device - Google Patents

Abstract

The utility model relates to a scalable ejector pin device, including regulating tube, locking pipe, sleeve pipe, the external diameter of regulating tube is less than the sheathed tube internal diameter, inserts in the sleeve pipe, and the locking cap is equipped with interior taper screw, and the cover is on the regulating tube, and sheathed tube confession regulating tube male one end is equipped with the outer taper screw that corresponds with the locking cap to be equipped with the expansion joint in establishing outer taper screw department, locking cap and sheathed tube tip taper threaded connection are in the same place the sleeve pipe with the regulating tube locking. The utility model discloses processing technology is simple, when using directional instrument (like wireless measurement while drilling instrument) to guide the direction and creep into, according to the measurement to the inside cluster space of measuring instrument, adjusts suitable length in order to satisfy the fixed needs of measuring instrument with scalable ejector pin device, and scalable ejector pin device can realize the flexible of arbitrary length in work allowed band, has saved field operation personnel's activity duration greatly, has also improved operation personnel's work efficiency.

Description

Telescopic ejector rod device

Technical Field

The utility model belongs to oil gas field exploration and development instrument field, concretely relates to scalable ejector pin device.

Background

In the process of oil and gas field exploration and development, in order to drill a well track meeting design requirements, a directional instrument (such as a wireless measurement while drilling instrument) is often adopted to guide and drill, in the use process of the measurement instrument, because the key-off phenomenon often occurs in the seat key type measurement instrument, a mandril is usually used for fixing the inside of the instrument, but instruments produced by different manufacturers are various in types and have large size difference, in the construction process, the proper mandril is usually selected after measuring the inner space of the test instrument with different sizes, the mandrils with various specifications are required to be prepared for selection, so that field operators often spend a large amount of time on the selection of the mandrils, and the working efficiency of the operators is reduced.

The patent document of the Chinese utility model with the publication number of CN203499672U discloses an adjustable anti-drop key ejector rod, which comprises an outer cylinder and a stretching rod, wherein the outer cylinder is a hollow tubular body, the lower end of the outer cylinder is provided with an internal thread, and the outer wall of the outer cylinder is provided with a positioning screw hole; the stretching rod is inserted into the cavity of the outer barrel, threads are arranged at the upper end of the stretching rod, positioning grooves are distributed at the lower part of the stretching rod at equal intervals along the axial direction, and positioning screws in the positioning screw holes can be clamped in the positioning grooves to fix the stretching rod in the cavity of the outer barrel.

It is not difficult to discover that although the telescoping device of above-mentioned scalable anticreep key ejector pin only includes the urceolus, tensile pole, processing, except will set up different location screw on the urceolus, still will set up numerous constant head tanks on tensile pole equidistant, the processing technology is complicated, and the set screw can only block and fix a position in the constant head tank, therefore the scalable that above-mentioned device realized only is organic flexible, can not accomplish arbitrary adjustable inorganic flexible in the length allowed range, therefore provide a processing technology simple, can realize the flexible ejector pin device of arbitrary flexible length in the working range and become the problem that this field is awaited the opportune moment and solve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a processing technology is simple, can realize the flexible ejector pin device of the arbitrary length of stretching out and drawing back in the working range.

In order to achieve the above object, the utility model discloses well flexible ejector pin device adopts following technical scheme:

the utility model provides a scalable ejector pin device, includes regulating tube, locking cap, sleeve pipe, the external diameter of regulating tube is less than sheathed tube internal diameter, inserts in the sleeve pipe, and the locking cap is equipped with interior taper screw, and the cover is on the regulating tube, and sheathed tube confession regulating tube male one end is equipped with the outer taper screw that corresponds with the locking cap to be equipped with the expansion joint in establishing outer taper screw department, locking cap and sheathed tube tip taper threaded connection are in the same place sleeve pipe and regulating tube locking.

The utility model has the advantages that: the utility model discloses scalable ejector pin device is adding man-hour, the control tube only need be protruding at tip welding, the other end sets up the handle, the sleeve pipe sets up outer awl screw and spacer pin, need not set up the location screw on control tube and sleeve pipe, equidistant complicated technological operation such as numerous constant head tanks of seting up, processing technology is simple, when using directional instrument (like wireless measurement while drilling instrument) to guide the direction and creep into, according to the measurement to measurement instrument cluster inner space, adjust scalable ejector pin device to suitable length in order to satisfy the fixed needs of measurement instrument, on-the-spot operating personnel's activity duration has been saved greatly, operating personnel's work efficiency has also been improved.

Furthermore, a handle for pushing and pulling the adjusting tube is fixed at the end part of the adjusting tube far away from one end of the sleeve. The adjusting pipe is pushed and pulled by the handle, and the ejector rod is more convenient to stretch and adjust.

Furthermore, the end part of the adjusting pipe close to one end of the sleeve is provided with a guiding device for guiding the adjusting pipe to enter the sleeve.

Further, the guide device is a protrusion welded on the outer side of the end part of the adjusting pipe in the radial direction. The setting of the welding projection avoids the swing of the adjusting pipe along the radial direction after the adjusting pipe enters the sleeve.

Furthermore, the end part of the locking cap far away from one end of the sleeve is designed into a polygonal structure which can be screwed down.

Furthermore, the part of the sleeve close to the external taper thread is designed into a polygonal structure which can be screwed down.

Furthermore, more than two telescopic seams are uniformly arranged along the circumferential direction of the sleeve.

Further, the expansion joint forms the lamella of interval arrangement with the tip of sleeve pipe, the inboard spot welding of lamella has a bit to increase the frictional force of lamella and sleeve pipe and the coincidence department contact surface of control tube. When the locking cap is in conical threaded connection with the sleeve, the flaps formed by the expansion joints shrink inwards, and the points of spot welding on the inner sides of the flaps enable locking to achieve a better effect.

Furthermore, one end of the sleeve pipe, which is far away from the locking cap, is provided with a limiting pin along the radial direction, and the limiting pin is used for blocking and limiting a corresponding measuring instrument. The setting of spacer pin has avoided measuring instrument and regulating tube to take place the contact and damage the regulating tube.

Drawings

Fig. 1 is a cross-sectional view of the telescopic ejector rod device of the present invention along a radial direction;

FIG. 2 is a partial cross-sectional view of the central adjustment tube of the present invention in a radial direction;

FIG. 3 is a cross-sectional view of the locking cap of the present invention along a radial direction;

fig. 4 is a cross-sectional view of the middle sleeve in the radial direction according to the present invention;

FIG. 5 is a left side view of the bushing of the telescoping ram apparatus of FIG. 4;

reference numerals: 1-adjusting pipe, 101-bulge, 2-locking cap, 201-internal conical thread, 3-sleeve, 301-external conical thread, 302-expansion joint, 4-limiting pin and 5-cross handle.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

The utility model discloses a specific embodiment of scalable ejector pin device:

as shown in fig. 1, the telescopic ejector rod device comprises an adjusting pipe 1, a locking cap 2 and a sleeve 3, wherein the outer diameter of the adjusting pipe 1 is smaller than the inner diameter of the sleeve 3, the adjusting pipe is inserted into the sleeve 3, and the locking cap 2 is provided with an inner tapered thread 201 and is sleeved on the adjusting pipe 1.

As shown in fig. 2, a cross handle 5 for pushing and pulling the adjusting tube 1 is fixed at the end of the adjusting tube 1 far from the sleeve 3. The cross handle 5 is arranged to assist in pushing and pulling the adjusting pipe 1, the ejector rod is more convenient to stretch and adjust, and in other embodiments, the cross handle can be arranged to be in a straight shape or other forms.

Further, the end of the adjusting tube 1 near one end of the sleeve 3 is provided with a guiding device for guiding the adjusting tube 1 into the sleeve 3, and the guiding device is a protrusion 101 welded on the outer side of the end of the adjusting tube 1 along the radial direction. The welding projection is set to avoid the adjusting tube 1 from swinging in the radial direction after entering the sleeve 3, so that in other embodiments the guiding means may be provided as a guiding ring or as a plurality of welding projections, with the same effect.

As shown in fig. 3, the end of the locking cap 2 near the end of the sleeve 3 is provided with an inner tapered thread 201, and the end of the locking cap 2 far from the end of the sleeve 3 is designed into a polygonal structure for tightening. When the locking cap 2 and the sleeve 3 are in taper thread connection, a wrench is convenient to use for screwing operation.

As shown in fig. 4 to 5, an end of the sleeve 3 into which the adjustment tube 1 is inserted is provided with an external tapered thread 301 corresponding to the locking cap 2. For mating with the locking cap 2 for a tapered threaded connection.

Furthermore, the outer taper thread 301 is provided with two or more expansion joints 302, which are uniformly arranged along the circumferential direction of the sleeve 3, the expansion joints 302 form petals arranged at intervals on the end of the sleeve 3, and 4-6 welding spots are spot-welded on the inner sides of the petals to increase the friction force of the contact surface of the petals with the superposition position of the sleeve 3 and the adjusting pipe 1. When locking cap 2 was tapering threaded connection with sleeve pipe 3, the lamella that the expansion joint 302 formed inwards shrunk, and the solder joint of the inboard spot welding of lamella then makes locking reach better effect. In other embodiments, the number of welding spots for spot welding on the inner side of the flap can be changed, and spot welding can be omitted on the inner side of the flap under the condition that the locking effect of the locking cap on the adjusting pipe and the sleeve meets the requirement.

Further, the sleeve 3 is designed to have a polygonal structure near the external taper thread 301 for tightening. The wrench is convenient to use for screwing operation.

Further, one end of the sleeve 3, which is far away from the locking cap 2, is provided with a limit pin 4 used for blocking and limiting a corresponding measuring instrument along the radial direction. The arrangement of the limiting pin 4 avoids the collision between the measuring instrument and the adjusting tube 1 and damages the adjusting tube 1, and under the limiting effect, in other embodiments, the limiting pin can be changed into a limiting plate or a limiting ring, or can be arranged into a plurality of limiting pins.

Claims (9)

1. The utility model provides a scalable ejector pin device which characterized in that: including regulating pipe, locking cap, sleeve pipe, the external diameter of regulating pipe is less than sheathed tube internal diameter, inserts in the sleeve pipe, and the locking cap is equipped with interior taper screw thread, overlaps on the regulating pipe, and sheathed tube confession regulating pipe male one end is equipped with the outer taper screw thread that corresponds with the locking cap to be equipped with the expansion joint in establishing outer taper screw thread department, locking cap and sheathed tube tip taper threaded connection are in the same place sleeve pipe and regulating pipe locking.

2. The telescopic ram apparatus of claim 1, wherein: and a handle for pushing and pulling the adjusting pipe is fixed at the end part of the adjusting pipe far away from one end of the sleeve.

3. The telescopic ram apparatus of claim 1, wherein: the end part of the adjusting pipe close to one end of the sleeve is provided with a guiding device for guiding the adjusting pipe to enter the sleeve.

4. The telescopic ram apparatus of claim 3, wherein: the guide device is a bulge welded on the outer side of the end part of the adjusting pipe in the radial direction.

5. The telescopic ram apparatus of claim 1, wherein: the end part of the locking cap far away from one end of the sleeve is designed into a polygonal structure which can be screwed down.

6. The telescopic ram apparatus of claim 1, wherein: the position, close to the outer conical thread, on the sleeve is designed to be a polygonal structure capable of performing screwing operation.

7. The telescopic ram apparatus of claim 1, wherein: the telescopic seam has more than two, evenly arranges along the circumference of sleeve pipe.

8. The telescopic ram apparatus of claim 7, wherein: the expansion joint forms the lamella of interval arrangement with the tip of sleeve pipe, the inboard spot welding of lamella has a bit to increase the frictional force of lamella and sleeve pipe and the contact surface of adjusting pipe coincidence department.

9. The telescopic ram apparatus of claim 1, wherein: and one end of the sleeve, which is far away from the locking cap, is provided with a limiting pin along the radial direction, and the limiting pin is used for blocking and limiting a corresponding measuring instrument.

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