CN210105802U

CN210105802U - Sliding block type fisher with locking mechanism

Info

Publication number: CN210105802U
Application number: CN201822133290.3U
Authority: CN
Inventors: 王金伟; 程永强
Original assignee: Liming Vocational University
Current assignee: Liming Vocational University
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-02-21
Anticipated expiration: 2028-12-18

Abstract

The utility model relates to a take locking mechanical system's slider formula fisher, including the fisher body, direction slider and locking mechanical system, locking mechanical system sets up in the one end that the center tube inner wall was kept away from to the direction slider, make the fisher when carrying the drilling tool upward movement through locking mechanical system, the dynamics of direction slider locking center tube is transferred tightly to the direction slider, promote the in-process at the fisher, locking mechanical system can move, the locking degree of adjustment fisher, after salvaging the operation completion, can move through motor drive locking mechanical system, reach the purpose of retrieving the fisher.

Description

Sliding block type fisher with locking mechanism

Technical Field

The utility model relates to a drilling tool salvages technical field, concretely relates to take locking mechanical system's slider formula fisher.

Background

In the construction process of some bridges and roads, drilling needs to be conducted on the ground or at the bottom of the bridge, when a drilling machine is drilled, the drilling tool often has a large swing amplitude due to geological reasons, so that the drilling tool and the drilling machine fall off, if fishing is not timely performed, the whole construction period is delayed, and the whole engineering progress is influenced, in the prior art, a sliding block type fisher is also used for solving the problem, but the existing fisher does not consider sliding between the fisher and the drilling tool during fishing, so that the drilling tool possibly falls off in the fishing process, secondary damage is caused, a locking mechanism is not arranged on the fisher to ensure the fishing safety, an oval mechanism is not provided as the locking mechanism, and meanwhile, the sliding block type fisher in the prior art does not consider how to recover the fisher, and the fishing rod is ready for the next fishing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a take locking mechanical system's slider formula fisher utilizes oval mechanism to control the locking, and safety, the steadiness when guaranteeing to salvage the drill bit avoid fisher not hard up, guarantee to salvage safety, still can operate locking mechanical system after finishing salvageing, reach the unblock purpose, retrieve the operation to fisher to salvage the use next time in preparation for.

In order to achieve the above object, the utility model adopts the following technical scheme:

a slider type fisher with a locking mechanism comprises a fisher body, a guide slider and the locking mechanism, wherein the whole fisher body is of a truncated cone-shaped structure, a connecting rod section is arranged at the upper end of the fisher body, a guide section is arranged at the lower end of the fisher body, a through hole is formed in the middle of the fisher body, a guide rail is arranged on the fisher body and is arranged along the direction of a bus of the fisher body, the guide slider is arranged on the guide rail, the outer side surface of the guide slider is used for abutting against or separating from the inner wall of a central pipe of a drilling tool to be salvaged, the locking mechanism is arranged at one end, far away from the inner wall of the central pipe, of the guide slider, and when the fisher;

preferably, the inner end of the guide sliding block is provided with a mounting counter bore, an alloy rod is arranged in the guide sliding block in a sliding mode, the alloy rod is provided with a limiting end and a contact, one end of the limiting end abuts against the fisher body, the other end of the limiting end is provided with a spring, the spring is mounted between the limiting end and the mounting counter bore, when the guide sliding block slides on the guide rail, the spring and the fisher body act together, and only the contact extends out of the guide sliding block when the guide sliding block slides on the guide rail;

preferably, the locking mechanism comprises an oval rotating block, a driving mechanism, a sliding link rod and a brake device, the oval rotating block is rotatably arranged in the through hole, the driving mechanism drives the oval rotating block to rotate, the sliding link rod horizontally penetrates through the fisher body, one end of the sliding link rod penetrating through the through hole is in contact and abutting joint with the oval rotating block, when the fisher is lowered, the brake device brakes the oval rotating block, a guide sliding block in the sliding block fisher is clamped with the position where the central pipe is lifted and salvaged, the other end of the sliding link rod is abutted against the limiting end of an alloy rod in the guide sliding block, and after the fisher is lifted and pulls the central pipe, the driving mechanism drives the oval rotating block to rotate, so that the sliding link rod abutting against the oval rotating block extends outwards, is inserted into the installation counter bore, the alloy rod is driven to move outwards, and the locking contact is buckled with the;

preferably, the cross section of the elliptic rotating block is an elliptic structure, the elliptic rotating block is provided with a long shaft a and a short shaft b, when the locking mechanism is not operated, the short shaft part of the elliptic rotating block is abutted against the sliding link, and only when the locking mechanism is operated, the elliptic rotating block rotates, so that the shape structure of the elliptic rotating block is utilized to enable the sliding link to be operated, the alloy rod is driven to move, and the central pipe is locked;

preferably, 2 guide rails are arranged along the circumferential direction of the fisher body, the number of the sliding connecting rods and the number of the guide sliding blocks are correspondingly two, and gradually-enlarged holes are formed in the lower ends of the through holes;

preferably, after fishing, the oval rotating block is driven to rotate reversely by the driving mechanism, the spring drives the alloy rod to reset and retract, the contact of the contact and the central pipe is released, and the guide sliding block and the central pipe are unlocked;

preferably, the driving mechanism is a motor, and the lowering or lifting of the fisher is detected through a speed sensor or a direction sensor.

Compared with the prior art, the utility model discloses the technological effect who possesses does:

a. in the process of salvaging and lifting, the salvaging device is locked in the central tube by using a locking mechanism, so that the salvaging safety is ensured;

b. after fishing, the locking mechanism is driven by the motor to unlock, so that the fisher is convenient to recover, and the next fishing action is carried out;

c. in the fishing process, the oval rotating block is used as a locking mechanism, the purposes of unlocking and locking are achieved by utilizing the shape of the oval structure, and the structure is simple and novel;

d. the locking mechanism combines the elliptic shape of the elliptic rotating block and the combined action of the spring, thereby realizing free unlocking and locking operation.

Drawings

FIG. 1 is a schematic structural view of an overshot;

FIG. 2 is a top view of the overshot;

FIG. 3 is a schematic view of an elliptical rotating block;

FIG. 4 is a schematic cross-sectional view of a guide shoe;

fig. 5 is a schematic end-sectional view of the guide shoe (mounting rail structure not shown).

Reference numbers in the drawings:

1-a central tube; 2-fisher body; 3-connecting the rod sections; 4-a guiding section; 5-a through hole; 6-gradually reaming the hole; 7-a guide rail; 8-a guide slide block; 9-alloy rod; 10-a sliding link; 11-a locking mechanism; 15-a contact; 16-a limiting end; 17-a spring; 18-installing the counter bore.

Detailed Description

The present invention will be further explained with reference to fig. 1 to 5:

a sliding block type fisher with a locking mechanism comprises a fisher body 2, the whole fisher body 2 is of a cone frustum-shaped structure, a connecting rod section 3 is arranged at the upper end of the fisher body 2, a guide section 4 is arranged at the lower end of the fisher body 2, a through hole 5 is arranged in the middle of the fisher body 2, a guide rail 7 is arranged on the fisher body 2, the guide rail 7 is arranged along the bus direction of the fisher body 2, a guide sliding block 8 is arranged on the guide rail 7, a structure clamped with the guide rail 7 is arranged on the guide sliding block 8 and matched with the guide rail, so that sliding between the guide sliding block 8 and the guide rail 7 is realized, if a dovetail groove is arranged on the guide sliding block 8, the guide rail 7 is arranged to be matched with the dovetail groove, the outer side face of the guide sliding block 8 is used for being abutted against or separated from, when the fisher lifts the drilling tool to move upwards through the locking mechanism 11, the guide sliding block 8 tightens the force of the guide sliding block for locking the central pipe 1.

Preferably, as shown in fig. 4-5, the inner end of the guide slider 8 is provided with a mounting counterbore 18, the guide slider is slidably provided with an alloy rod 9, the alloy rod 9 has a limiting end 16 and a contact 15, one end of the limiting end 16 abuts against the fisher body 2, the other end of the limiting end is provided with a spring 17, the spring 17 is mounted between the limiting end 16 and the mounting counterbore 18, when the guide slider 8 slides on the guide rail 7, the spring 17 and the fisher body 2 act together, so that only the contact 15 extends out of the guide slider 8 when the guide slider 8 slides on the guide rail 7.

Preferably, as shown in fig. 1-2, the locking mechanism 11 includes an oval-shaped rotating block 12, a driving mechanism, a sliding link 10 and a braking device, the oval-shaped rotating block 12 is rotatably disposed in the through hole 5, such as can be disposed in the through hole 5 through a bearing, the driving mechanism can drive the oval-shaped rotating block 12 to rotate, such as the driving mechanism is a driving motor, the sliding link 10 horizontally penetrates through the fisher body 2, one end of the sliding link 10 penetrating through the through hole 5 is in contact and abutting contact with the oval-shaped rotating block 12, and the braking device brakes the oval-shaped rotating block 12 during the fishing process, such as monitoring the fishing process by setting a speed sensor or a direction sensor; in the position where the guide slider 8 of the slider fisher engages with the central pipe 1 to perform lifting and fishing, the other end of the slide link 10 abuts against the limit end 16 of the alloy rod 9 in the guide slider 8. After the speed sensor or the direction sensor detects that the fisher rises and pulls the central pipe 1, the driving mechanism drives the oval rotating block 12 to rotate, so that the sliding connecting rod which is abutted against the oval rotating block 12 extends outwards and is inserted into the mounting counter bore 18, the alloy rod 9 is driven to move outwards, the locking contact 15 is buckled with the central pipe 1, and therefore the sliding block type fisher is guaranteed not to be loosened during fishing work, and fishing safety is guaranteed.

Preferably, the pivot guide rail 7 is provided with 2 along 2 circumference directions of fisher body, and the number of slip link 10, direction slider 8 is corresponding sets up to two, is provided with gradually reaming 6 at the lower extreme of through-hole 5 to prevent that fisher when transferring, because dust, earth and jam fisher body.

As shown in fig. 2-3, the cross section of the elliptic rotating block is an elliptic structure, which has a major axis a and a minor axis b, when the locking mechanism is not in operation, the minor axis of the elliptic rotating block partially abuts against the sliding link 10, and only when the locking mechanism is in operation, the elliptic rotating block rotates, so that the sliding link operates by utilizing the elliptic structure, and the alloy rod 9 is driven to move, thereby achieving the purpose of locking.

Referring to fig. 1, in the actual fishing operation, the fisher is lowered to the underground by using a lifting mechanism, the fisher body 2 extends into the central tube 1 of the fishing tool to be fished, the guide slider 8 slides on the guide rail 7 in the process of lowering the fisher, the diameter enclosed by the outer side surface of the guide slider 8 is gradually reduced due to the cone frustum shape of the fisher body, and then the guide slider enters the central tube 1 of the fishing tool, when the fisher is detected to move down, the elliptical rotating block is kept static by the brake device, the guide slider 8 moves down along the guide rail 7 under the action of self gravity, so that the outer side surface of the guide slider 8 is attached to the inner wall of the central tube 1 of the fishing tool, along with the upward movement of the fisher, the outer side surface of the guide slider 8 is attached to the inner wall of the central tube 1 of the fishing tool under the action of the gravity, and finally, the guide slider 8 moves to the locking position, at the moment, the outer end of the sliding link rod 10 abuts against the limiting end 16 of the alloy rod 9, when the overshot is detected to move upwards, the driving mechanism drives the elliptic rotating block 12 to rotate, so that the sliding link rod 10 moves outwards, the alloy rod 9 is pushed to extend outwards, and finally the contact 15 is tightly attached to the central pipe 1, so that the locking purpose is achieved, and the drilling tool with the central pipe can be conveniently overshot. And after the fishing, the elliptic rotating block 12 can be driven to rotate reversely by the driving mechanism, the alloy rod 9 is reset and retracted under the action of the spring 17, and finally the contact between the contact and the central pipe 1 is released, so that the locking between the guide sliding block 8 and the central pipe 1 is released, the purpose of automatically releasing the fishing drilling tool is achieved, the fishing cycle can be effectively shortened, and the engineering progress is improved.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.

Claims

1. The utility model provides a take locking mechanical system's slider formula fisher, including fisher body (2), direction slider (8) and locking mechanical system (11), fisher body (2) wholly is circular truncated cone column structure, fisher body (2) upper end is provided with connecting rod section (3), the lower extreme is provided with direction section (4), fisher body (2) middle part is provided with through-hole (5), be provided with guide rail (7) on fisher body (2), guide rail (7) are laid along fisher body (2) generating line direction, be provided with direction slider (8) on guide rail (7), direction slider (8) lateral surface is used for supporting with center tube (1) inner wall of treating the salvage drilling tool and leans on or separate its characterized in that: the locking mechanism (11) is arranged at one end, far away from the inner wall of the central pipe, of the guide sliding block (8), and the guide sliding block (8) tightly adjusts the force of the guide sliding block for locking the central pipe (1) when the fisher lifts the drilling tool to move upwards through the locking mechanism (11).

2. A slipper overshot with a locking mechanism as claimed in claim 1, wherein: the inner of direction slider (8) is provided with installation counter bore (18), it is provided with alloy pole (9) to slide in the direction slider, alloy pole (9) have spacing end (16) and contact (15), spacing end (16) one end is supported and is leaned on fisher body (2), the other end is provided with spring (17), spring (17) are installed between spacing end (16) and installation counter bore (18), when direction slider (8) slide on guide rail (7), spring (17) and fisher body (2) combined action, when making direction slider (8) slide on guide rail (7), only contact (15) stretch out outside direction slider (8).

3. A slipper overshot with a locking mechanism as claimed in claim 1 or 2, characterised in that: the locking mechanism (11) comprises an oval rotating block (12), a driving mechanism, a sliding connecting rod (10) and a brake device, the oval rotating block (12) is rotatably arranged in the through hole (5), the driving mechanism drives the oval rotating block (12) to rotate, the sliding connecting rod (10) horizontally penetrates through the fisher body (2), one end of the sliding connecting rod (10) penetrating through the through hole (5) is in contact and abutted connection with the oval rotating block (12), when the fisher is lowered, the brake device brakes the oval rotating block (12), a guide sliding block (8) in the sliding block fisher is clamped with a central pipe (1) to lift and salvage, the other end of the sliding connecting rod (10) is abutted with a limiting end (16) of an alloy rod (9) in the guide sliding block (8), after the fisher lifts and pulls the central pipe (1), the driving mechanism drives the oval rotating block (12) to rotate, and therefore the sliding connecting rod abutted with the oval rotating block (12) is enabled to extend outwards, the alloy rod (9) is driven to move outwards by being inserted into the mounting counter bore (18), and the locking contact (15) is buckled with the central tube (1).

4. A slipper overshot with a locking mechanism as claimed in claim 3, wherein: the cross section of the elliptic rotating block is of an elliptic structure and is provided with a long shaft a and a short shaft b, when the locking mechanism is not operated, the short shaft part of the elliptic rotating block is abutted against the sliding link rod (10), and only when the locking mechanism is operated, the elliptic rotating block rotates, so that the sliding link rod (10) is operated by utilizing the shape structure of the elliptic rotating block, the alloy rod (9) is driven to move, and the central tube (1) is locked.

5. A slipper overshot with a locking mechanism as claimed in claim 1, wherein: the guide rail (7) is provided with 2 along fisher body (2) circumferential direction, and the number of slip link rod (10), direction slider (8) sets up to two correspondingly, is provided with at the lower extreme of through-hole (5) and gradually reams (6).

6. A slipper overshot with a locking mechanism as claimed in claim 3, wherein: after fishing, the oval rotating block (12) is driven to rotate reversely by the driving mechanism, the alloy rod (9) is driven by the spring (17) to reset and retract, the contact of the contact and the central pipe (1) is released, and the guide sliding block (8) and the central pipe (1) are unlocked.

7. A slipper overshot with a locking mechanism as claimed in claim 3, wherein: the driving mechanism is a motor, and the fishing device is detected to be lowered or lifted through a speed sensor or a direction sensor.