CN212716467U

CN212716467U - Keyway barrel type telescopic drill rod

Info

Publication number: CN212716467U
Application number: CN202021387599.6U
Authority: CN
Inventors: 孟超
Original assignee: Zhengzhou Gaoqiang Electromechanical Co ltd
Current assignee: Zhengzhou Gaoqiang Electromechanical Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-03-16
Anticipated expiration: 2030-07-15

Abstract

The utility model discloses a flexible drilling rod of keyway cylinder, including flexible drilling rod main part and sleeve, the inboard flexible drilling rod main part surface mounting in sleeve top has a section of thick bamboo, the inside circumference of a section of thick bamboo evenly is provided with four slots, four inserted bars are evenly installed on telescopic top, and the inserted bar extends to a section of thick bamboo top through the slot, link firmly the mechanism on the top of inserted bar, the inboard flexible drilling rod main part surface mounting in sleeve bottom has a section of thick bamboo at the bottom, the key groove mechanism is installed with sleeve bottom inner wall clearance department on the surface of a section of thick bamboo at the bottom, the flexible drilling rod main part surface mounting of key groove mechanism below has positioning mechanism. The utility model discloses a be provided with a series of structures for this flexible drilling rod of keyway cylinder can guarantee the structural stability between sleeve and the drilling rod when transmission power, when avoiding stress concentration, improves the intensity of drilling rod indirectly, enlarges the application range of drilling rod, can reduce the machining precision of keyway.

Description

Keyway barrel type telescopic drill rod

Technical Field

The utility model relates to a pile driver technical field specifically is a keyway cylinder drilling rod that stretches out and draws back.

Background

In the use of pile driver, need drive the drilling rod rotation, carry out drilling operation to ground with the help of the drilling rod drill bit, in general pile driver, it is the supporting effect of pylon to rely on, hangs the drilling rod with the help of wire rope etc. receive and release from top to bottom to the drilling rod with the help of wire rope's receive and release effect, and then changes the downward feeding volume of drilling rod, and during the in-service use, still need be at the drilling rod outer installation sleeve part to guide and transmit rotary power to the drilling rod.

In prior art, the patent of publication No. CN201730562U for keyway cylinder pile pore-forming drilling rod, with the help of the mounting means of keyway and key, make core barrel (sleeve) and drilling rod spacing connection, can drive the drilling rod and rotate under the rotatory condition of core barrel, and its whole keyway needs to mutually support, great to the condition when keyway length, it is higher to the machining precision requirement, processing cost has been increased from this, and less when structures such as key, cause unfavorable phenomenon such as stress concentration very easily, make the keyway take place the fracture or even bad phenomenon such as fracture with the junction of key easily, shorten life from this.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a keyway cylinder drilling rod that stretches out and draws back to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a flexible drilling rod of keyway cylinder, includes flexible drilling rod main part and cup joints the sleeve in the flexible commentaries on classics drilling rod main part outside, the inboard flexible drilling rod main part surface mounting in sleeve top has a top section of thick bamboo, the inside circumference of top section of thick bamboo evenly is provided with four slots, four inserted bars are evenly installed on telescopic top, and the inserted bar extends to a top section of thick bamboo top through the slot, link firmly the mechanism on the top of inserted bar, the inboard flexible drilling rod main part surface mounting in sleeve bottom has a bottom section of thick bamboo, the surface and the sleeve bottom inner wall clearance department of a bottom section of thick bamboo install keyway mechanism, the flexible drilling rod main part surface mounting of keyway mechanism below has positioning mechanism.

Preferably, the fixedly connecting mechanism comprises an arc-shaped thread surface and a centering ring, the arc-shaped thread surface is arranged on the outer surface of the inserted rod far away from the center of the top cylinder, and the centering ring is sleeved on the outer surfaces of the four inserted rods through the arc-shaped thread surface.

Preferably, keyway mechanism includes feather key and keyway, and eight keyways evenly set up the circumferential surface at the end section of thick bamboo, and the inner wall surface of sleeve bottom is evenly installed to eight feather keys, and the feather key extends to in the keyway.

Preferably, the positioning mechanism comprises a clamping ring and a pin key, the clamping ring is detachably mounted on the surface of the telescopic drill rod body below the bottom barrel, and the pin key is mounted in a gap between the bottom barrel and the clamping ring.

Preferably, a reserved welding groove is arranged in a gap between the bottom end of the clamping ring and the surface of the telescopic drill rod main body.

Preferably, the surface of the telescopic drill rod body below the top barrel is movably sleeved with a top plate, the outer side surface of the top plate is connected with the top end of the inner wall of the sleeve, and a groove is formed between the top plate and the top end of the sleeve.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this flexible drilling rod of keyway cylinder, through the inserted bar, use with the slot combination, can form four connection areas, realize relative spacing effect with sleeve and top tube, inserted bar and slot size length are great, can form the dispersion effect of moment, under the flexible drilling rod main part pivoted condition of follow-up sleeve drive, but the diffusion moment of torsion, avoid suffering great stress concentration because of between inserted bar and the slot, and then avoid producing stress destruction, can be under the condition that does not need absolute fixed between inserted bar and the slot, enlarge the sleeve and even the moment of torsion that flexible drilling rod main part bore, improve the holistic pile drilling intensity of flexible drilling rod, be applicable to soil, use under the environment such as rock, improve application range.

2. This telescopic drill rod of keyway barrel, through the roof, see the installation component use of inserted bar, and there is certain difference in height on top of the sleeve, form the recess promptly, the recess can carry on spacingly to top of the cylinder bottom, and can form a ladder ring, wrap up top of the cylinder bottom, when avoiding stress concentration, can be convenient for going on of follow-up operations such as welding, through centering lasso, can be with the help of the arc flank of thread, cup joint the top at four inserted bars simultaneously, make the inserted bar to the stress of top of the cylinder centre of a circle direction from this, increase the frictional force between inserted bar and the slot, and can realize fixed effect with the help of threaded connection, avoid the inserted bar to take place decurrent running motion under follow-up received vibrational force etc. condition, influence in-service use, the installation component

3. This flexible drilling rod of keyway cylinder, through the keyway, use with the feather key combines, can install the relative spacing surface at a bottom section of thick bamboo in telescopic bottom, form the spacing to the sleeve bottom, and through the cotter, can insert the clearance department of keyway and feather key, form spacing effect, can be when actual production, reduce the machining precision of keyway and feather key, reduction in production cost, through the snap ring, can be with the help of upward movements such as screw thread, push up tightly to the cotter, play spacing and increase the frictional effect in bolt bottom, improve structural stability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic view of the surface structure of the top cylinder of the present invention.

In the figure: 1. a sleeve; 2. a top cylinder; 3. a snap ring; 4. a telescopic drill rod main body; 5. a keyway; 6. a bottom cylinder; 7. a top plate; 8. inserting a rod; 9. a slot; 10. a sliding key; 11. reserving a welding groove; 12. a pin key; 13. an arc-shaped thread surface; 14. and (4) centering the ferrule.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, the key slot cylinder type telescopic drill rod of the present embodiment includes a telescopic drill rod main body 4 and a sleeve 1 sleeved outside the telescopic drill rod main body 4, the sleeve 1 is a straight-going cylindrical component, which is externally connected with a power component during actual use, the sleeve 1 can be driven by an external power component to rotate, and further the telescopic drill rod main body 4 inside the sleeve 1 is driven to rotate, the telescopic drill rod main body 4 can be a general telescopic type auger rod and is a main component of a pile driving drilling machine, etc., the telescopic drill rod main body 4 does not slide along the sleeve 1 during actual pile driving, when a deep hole needs to be drilled, a pile driving needs to be performed by means of a telescopic auger rod in a sleeved form or a plurality of drill rods connected end to end, a pile driving cylinder 2 is installed on the surface of the telescopic drill rod main body 4 inside the top end of the sleeve 1, the pile driving cylinder 2 is used as a connecting component between the top end of, the slot 9 extends from bottom to top and is a slot body communicated up and down, four insertion rods 8 are uniformly arranged at the top end of the sleeve 1, the insertion rods 8 can move up and down along with the sleeve 1, the shapes of the insertion rods 8 are close to the shapes of the inner walls of the slot 9 and are all non-circular, the insertion rods 8 extend to the top end of the top cylinder 2 through the slot 9 and are matched with each other relatively, when in actual use, four connecting areas can be formed, the sleeve 1 and the top cylinder 2 are relatively limited, the top cylinder 2 is large in length, the insertion rods 8 and the slot 9 are large in size and can form a moment dispersion effect, under the condition that the subsequent sleeve 1 drives the telescopic drill rod main body 4 to rotate, the torque can be dispersed, the phenomenon that the large stress concentration is caused between the insertion rods 8 and the slot 9 is avoided, the stress damage is avoided, and the torque borne by the sleeve 1 and even the telescopic drill rod main body 4 can be expanded under the condition that the insertion, improve holistic pile drilling intensity of flexible drilling rod, the application is suitable for soil, use under the environment such as rock, link firmly the mechanism is installed on the top of inserted bar 8, fix four inserted

bars

8, 1 inboard flexible drilling rod main part 4 surface mounting in sleeve bottom has end section of thick bamboo 6, end section of thick bamboo 6 is as the adapting unit between flexible drilling rod main part 4 and the sleeve 1 bottom, keyway mechanism is installed with 1 bottom inner wall clearance department in the surface of end section of thick bamboo 6, realize keyway installation effect, 4 surface mounting of flexible drilling rod main part 4 of keyway mechanism below has positioning mechanism, fix spacingly between the keyway.

Specifically, the fixing mechanism comprises an arc-shaped thread surface 13 and a centering ring 14, the arc-shaped thread surface 13 is arranged on the outer surface of the inserted rod 8 far away from the center of the top cylinder 2, the outer surface area of the inserted rod 8 is large, the same threads are arranged on the surface of the arc-shaped thread surface 13, the centering ring 14 is sleeved on the outer surfaces of the four inserted rods 8 through the arc-shaped thread surface 13, during practical use, the centering ring 14 can be sleeved on the outer surfaces of the four inserted rods 8 from top to bottom and can be influenced by the threads and the ring structure of the centering ring 14, the inserted rods 8 can be inwards extruded, the inserted rods 8 are stressed towards the center of the top cylinder 2, the friction force between the inserted rods 8 and the slots 9 is increased, the fixing effect can be realized by means of threaded connection, and downward displacement motion of the inserted rods 8 under the subsequent vibration force and other conditions is avoided.

Further, keyway mechanism includes feather key 10 and keyway 5, eight keyway 5 evenly set up the circumferential surface at end section of thick bamboo 6, keyway 5 can be for the outer semi-circular cell body that expands, arch cell body etc, keyway 5 extends from top to bottom along the surface of a smooth end section of thick bamboo 6, the inner wall surface of 1 bottom of sleeve is evenly installed to eight feather key 10, and feather key 10 extends to in the keyway 5, can be when actual installation, sleeve 1 overlaps from bottom to top when 4 surface of flexible drilling rod main part, eight feather key 10 get into eight relative keyways 5 inside respectively and form spacingly.

Further, positioning mechanism includes snap ring 3 and

cotter

12, 3 detachable installation at the flexible drilling rod main part 4 surfaces of end section of thick bamboo 6 below of snap ring, can install with the help of detachable parts such as screw thread, and cotter 12 installs at the clearance department of end section of thick bamboo 6 and snap ring 3, cotter 12 can be the form that the fan-shaped top in bottom is the arc, cotter 12 can select the metal material that performance such as ductility is good, the actual top can insert the clearance department of feather key 10 and keyway 5, form spacing effect, can be when actual production, reduce the machining precision of keyway 5 and feather key 10, and the reduction in production cost, and can be by snap ring 3 carry out the top to cotter 12 bottom after the use spacing.

Further, the reserved welding groove 11 is installed in the clearance department on 3 bottoms of snap ring and the flexible drilling rod main part 4 surface, has an annular notch, and inside can fill the solder, and then when actual need for weld each other between snap ring 3 and the flexible drilling rod main part 4, reach fixed effect.

Further, roof 7 has been cup jointed on the flexible drilling rod main part 4 surface activity of top section of thick bamboo 2 below, and the outside surface and the sleeve 1 inner wall top of roof 7 are connected, roof 7 actual fixed mounting is at sleeve 1's inner wall, the centre has the hole in advance, avoid flexible drilling rod main part 4, and still need carry out the fixed stay installation to four inserted bars 8, form the recess between roof 7 and the sleeve 1 top, the recess can carry out spacingly to top section of thick bamboo 2 bottom, and can form a ladder ring circle, wrap up top section of thick bamboo 2 bottom, when avoiding stress concentration, reserve and have great surface area, can be convenient for going on of follow-up operations such as welding.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a flexible drilling rod of keyway barrel, includes flexible drilling rod main part (4) and cup joints sleeve (1) in flexible drilling rod main part (4) outside, its characterized in that: sleeve (1) top inboard flexible drilling rod main part (4) surface mounting has a top section of thick bamboo (2), the inside circumference of a top section of thick bamboo (2) evenly is provided with four slots (9), four inserted bars (8) are evenly installed on the top of sleeve (1), and inserted bar (8) extend to a top section of thick bamboo (2) top through slot (9), the top of inserted bar (8) is installed and is linked firmly the mechanism, sleeve (1) bottom inboard flexible drilling rod main part (4) surface mounting has a bottom tube (6), the key groove mechanism is installed with sleeve (1) bottom inner wall clearance department on the surface of bottom tube (6), flexible drilling rod main part (4) surface mounting of key groove mechanism below has positioning mechanism.

2. A keyway barrel type telescopic drill rod according to claim 1, characterized in that: the fixing and connecting mechanism comprises an arc-shaped thread surface (13) and a centering ring (14), the arc-shaped thread surface (13) is installed on the outer surface of the inserted rod (8) far away from the circle center of the top barrel (2), and the centering ring (14) is sleeved on the outer surfaces of the four inserted rods (8) through the arc-shaped thread surface (13).

3. A keyway barrel type telescopic drill rod according to claim 1, characterized in that: keyway mechanism includes feather key (10) and keyway (5), and eight keyways (5) evenly set up the circumferential surface at end section of thick bamboo (6), and the inner wall surface of sleeve (1) bottom is evenly installed in eight feather key (10), and feather key (10) extend to in keyway (5).

4. A keyway barrel type telescopic drill rod according to claim 1, characterized in that: the positioning mechanism comprises a clamping ring (3) and a pin key (12), the clamping ring (3) is detachably installed on the surface of the telescopic drill rod body (4) below the bottom barrel (6), and the pin key (12) is installed at the gap between the bottom barrel (6) and the clamping ring (3).

5. A keyway barrel type telescopic drill rod according to claim 4, characterized in that: and a reserved welding groove (11) is arranged at the gap between the bottom end of the snap ring (3) and the surface of the telescopic drill rod main body (4).

6. A keyway barrel type telescopic drill rod according to claim 1, characterized in that: the surface of the telescopic drill rod main body (4) below the top barrel (2) is movably sleeved with a top plate (7), the outer side surface of the top plate (7) is connected with the top end of the inner wall of the sleeve (1), and a groove is formed between the top plate (7) and the top end of the sleeve (1).