CN115123690B - Drill rod compressing device and using method - Google Patents

Abstract

The application provides a drill rod pressing device and a using method thereof, and relates to the technical field of tapping machine equipment, wherein the device comprises a pressing rod, a fixed shell, an elastic assembly, a protective cover and a roll collar, wherein the pressing rod penetrates through the fixed shell, the protective cover penetrates through the pressing rod and is fixed with the fixed shell, the pressing rod is supported by the protective cover, and the caliber of a second cavity of the fixed shell is larger than that of a first cavity; the pressure bar is connected with a pressing block at one end far away from the protective cover, the pressure bar is in a ladder shape, the diameter of one end close to the pressing block is larger than that of one end far away from the pressing block on the axial section of the pressure bar, the pressure bar is in a flat structure at one end close to the pressing block, and the elastic component is sleeved on the pressure bar; the compression bar is arranged outside the fixed shell, one end of the compression bar, which is close to the protective cover, is connected with a roll collar, the direction of the roll collar is vertical to the direction of the compression bar, and the roll collar can rotate freely; the fixed shell is used for being connected to a drill rod box device provided with a drill rod; the pressing block is prevented from rotating and deviating, the pressing is firm, the impact and unbalanced load are reduced, and the pressing rod is enabled to move stably.

Description

Drill rod compressing device and using method

Technical Field

The application relates to the technical field of tapping machine equipment, in particular to a drill rod compressing device and a using method.

Background

The blast furnace tapping machine generally comprises a rotary part and a drilling part, wherein the drilling part is required to be provided with a drill rod, and the storage and the acquisition of the drill rod are also arranged for the drilling part of the blast furnace tapping machine; generally, a certain number of drill rods are placed in the drill rod box device, the drill rods can be sequentially taken out from the upper side of the drill rod box through the iron absorbing device, and the drill rods can be taken out from the lower side of the drill rod box in a self-weight falling mode.

However, the existing simple compressing device is unstable in stress, and when external force is used for compressing, the stress is easy to deviate, so that the compressing efficiency of the drill rod is low.

Disclosure of Invention

According to the embodiment of the invention, the problem that the compression efficiency of the drill rod is low because the simple compression device is unstable in stress and is easily deflected when external force is applied to compress the drill rod is solved, and the drill rod compression device can be used for preventing the pressing block from rotating and deviating, accurately positioning and compressing the drill rod to be compressed, is firm in compression, does not cause the falling of the pressure loosening drill rod due to mechanical compression, can reduce impact and unbalanced load, ensures that the compression rod moves stably, and improves the compression efficiency.

In a first aspect, an embodiment of the present invention provides a drill rod compressing apparatus, including a compression rod, a fixed housing, an elastic component, a protective cover, and a roller ring;

the pressure bar passes through the fixed shell, the protective cover passes through the pressure bar and is fixed with the fixed shell, and the pressure bar is supported by the protective cover;

the fixed shell comprises a first cavity and a second cavity which is integrated with the first cavity and is continuous, and the caliber of the second cavity is larger than that of the first cavity; the pressure bar is connected with a pressing block at one end far away from the protective cover, the pressure bar is in a ladder shape, the diameter of one end close to the pressing block is larger than the diameter of one end far away from the pressing block on the axial section of the pressure bar, and the pressure bar is in a flat structure at one end close to the pressing block;

the elastic component is sleeved on the pressure rod, one end of the elastic component is contacted with the junction of the first cavity and the second cavity, and the other end of the elastic component is fixed on the pressure rod;

the compression bar is arranged outside the fixed shell, one end of the compression bar, which is close to the protective cover, is connected with a roll collar, the central axis direction of the roll collar is perpendicular to the central axis direction of the compression bar, and the roll collar can rotate freely;

the outside of the fixed shell is close to one end of the pressing block and further comprises a connecting end, and the connecting end is used for fixedly connecting the drill rod pressing device to a drill rod box device provided with a drill rod.

With reference to the first aspect, in one possible implementation manner, the elastic component comprises a backing plate, a disc spring, an adjusting block and a lock nut;

the backing plate, the disc spring and the adjusting block are all sleeved on the pressing rod, the disc spring is located between the backing plate and the adjusting block, the backing plate is located at the junction of the first cavity and the second cavity of the fixed shell, and one side of the adjusting block is provided with the lock nut.

With reference to the first aspect, in a possible implementation manner, the cross section of the flat structure includes two planes and two arc surfaces, where two planes are opposite and symmetrical with respect to one central axis of the flat structure, and two arc surfaces are opposite and symmetrical with respect to another central axis of the flat structure.

With reference to the first aspect, in one possible implementation manner, the axial length of the flat structure is 1/4-1/5 of the total length of the compression rod.

With reference to the first aspect, in one possible implementation manner, the pressing rod is provided with a groove structure axially arranged along the pressing rod at an end far away from the pressing block, and the roller ring is fixed with the groove structure through a pin shaft and can freely roll.

With reference to the first aspect, in one possible implementation manner, a radius of the roller ring is greater than a distance between a center of a section of the roller ring and an end edge of the compression rod.

In a second aspect, an embodiment of the present invention provides a method for using a drill rod compressing apparatus, where the method includes the following steps:

reserving a mounting spigot on the drill rod box device, wherein the size of the mounting spigot is matched with the outer diameter of the fixed shell, and the position of the mounting spigot is determined according to the contact area of the pressing block and the drill rod and the outer diameter of the fixed shell;

placing a plurality of vertically arranged drill rods in the drill rod box device, fixing the fixed shell at the mounting seam allowance of the drill rod box device through a connecting end and a connecting piece, and enabling the pressing block to extend into the drill rod box device;

the section width of the pressing block is at least equal to the diameter of the two drilling rods; when the pressing device is in an unoperated state, a distance is reserved between the pressing block and the drill rod;

firstly, the roller collar is pressed by external force, the roller collar drives the compression bar to compress the second drill rod and the third drill rod which are positioned above the first drill rod at the bottom, the bottom plate at the bottom of the drill rod box device along the placing direction of the drill rod is opened, and the first drill rod which is in direct contact with the bottom plate starts to fall down;

releasing the external force for compressing the roll collar, driving the pressing block to automatically reset by the pressing rod, and beginning to drop the second drill rod, wherein at the moment, the third drill rod and the drill rods above drop a diameter distance of the drill rod, and the roll collar continuously drives the pressing rod to move towards a position close to the drill rod under the action of the external force and at least compresses the third drill rod and the fourth drill rod;

the external force for pressing the roller ring is released again, the compression bar automatically resets, the third drill rod begins to fall, the fourth drill rod and the drill rods above the fourth drill rod fall by a distance equal to the diameter of the drill rod, the roller ring is pressed again through the external force, and the pressing block presses the fourth drill rod and the fifth drill rod;

the operation of compressing the drill rod and loosening the drill rod is repeated in sequence until the bottom plate of the drill rod box device is covered, the roll collar is loosened, and the compression rod is automatically reset under the action of the elastic component.

With reference to the second aspect, in one possible implementation manner, when an external force acts on the roller ring, a displacement error of the roller ring in axial movement along the roller ring is 0-5mm.

One or more technical solutions provided in the embodiments of the present invention at least have the following technical effects or advantages:

according to the embodiment of the invention, the drill rod pressing device is adopted, the pressing rod is fixed in the fixed shell and supported by the protective cover, both ends of the pressing rod are positioned outside the fixed shell, the pressing rod is connected with the pressing block at one end far away from the protective cover, one end close to the protective cover is connected with the roller ring, the pressing rod is also sleeved with the elastic component, the elastic component is positioned in the fixed shell, the fixed shell comprises a first cavity and a second cavity which are mutually continuous, the caliber of the second cavity is larger than that of the first cavity, one end of the elastic component is positioned at the junction of the first cavity and the second cavity, the other end of the elastic component is fixed on the pressing rod, when the roller ring is acted by external force, the pressing rod moves towards the direction with the pressing block, the pressing block moves towards the direction far away from the fixed shell, the pressing block is used for pressing the drill rod placed in the drill rod box device, and when the external force is put down to act on the roller ring under the action of the elastic component, the pressing rod is automatically reset; the impact and unbalanced load can be reduced due to the contact and the action of the external force and the roll collar, so that the compression bar can move stably, and in addition, the diameter of one end close to the pressing block is larger than that of one end far away from the pressing block, and the compression bar is of a flat structure at one end close to the pressing block, so that the compression bar is prevented from rotating to influence the accurate compression of the drill rod due to the flat head type guiding movement; the embodiment of the invention effectively solves the problems of unstable stress of a simple pressing device in the prior art, easy deviation of stress when external force is applied to the pressing device, and low pressing efficiency of the drill rod, realizes the positioning and pressing of the drill rod to be pressed accurately, ensures firm pressing, adopts mechanical pressing, does not cause the falling of the pressure loosening drill rod, reduces impact and unbalanced load, ensures stable movement of the pressing rod, and improves the pressing efficiency.

The embodiment of the invention also provides a using method of the drill rod pressing device, when the drill rod pressing device is used, drill rods can gradually and orderly fall down one by one, and the drill rod pressing device presses the drill rods more stably and more accurately when in motion, so that the drill rod pressing device is simple to use and high in efficiency, at least two drill rods are pressed when the drill rods are pressed, the influence of the gravity of the drill rods above the bottom drill rods on the bottom drill rods is correspondingly reduced, and the pressing reliability is enhanced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a compression bar resetting structure of a compression device for a drill rod according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a compression state of a compression rod of a drill rod compression device according to an embodiment of the present invention;

FIG. 3 is a diagram provided by an embodiment of the present invention 1, A-A direction;

FIG. 4 is a diagram provided by an embodiment of the present invention 1, a structural schematic diagram of the B-B direction;

fig. 5 is a schematic structural view of a compressing device according to an embodiment of the present invention fixed on a drill box device.

Icon: 1-a compression bar; 2-a fixed housing; 3-backing plate; 4-disc springs; 5-adjusting the block; 6-locking the nut; 7-a protective cover; 8-a pin shaft; 9-roll collar; 10-a drill box device; 11-briquetting; 12-drill rod; 121-a first drill rod; 122-a second drill pipe; 123-a third drill pipe; 124-fourth drill pipe; 125-fifth drill pipe.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present invention and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.

As shown in fig. 1 to 5, the embodiment of the invention provides a drill rod compressing device, which comprises a compression rod 1, a fixed shell 2, an elastic component, a protective cover 7 and a roll collar 9;

the compression bar 1 passes through the fixed shell 2, the protective cover 7 passes through the compression bar 1 and is fixed with the fixed shell 2, and the compression bar 1 is supported by the protective cover 7;

the fixed shell 2 comprises a first cavity and a second cavity which is integrated with the first cavity and is continuous, and the caliber of the second cavity is larger than that of the first cavity; the pressing rod 1 is connected with the pressing block 11 at one end far away from the protective cover 7, the pressing rod 1 is in a ladder shape, the diameter of one end close to the pressing block 11 is larger than that of one end far away from the pressing block 11 on the axial section of the pressing rod 1, and the pressing rod 1 is in a flat structure at one end close to the pressing block 11;

the elastic component is sleeved on the compression bar 1, one end of the elastic component is contacted with the junction of the first cavity and the second cavity, and the other end of the elastic component is fixed on the compression bar 1;

the compression bar 1 is connected with a roll collar 9 at one end which is outside the fixed shell 2 and is close to the protective cover 7, the central axis direction of the roll collar 9 is perpendicular to the central axis direction of the compression bar 1, and the roll collar 9 can rotate freely;

the outer part of the stationary housing 2 further comprises a connection end at the end near the press block 11 for fixedly connecting the drill rod pressing device to the drill rod box device 10 provided with the drill rod 12.

Through the scheme, when external force acts on the roll collar 9, the pressing rod 1 moves towards the direction with the pressing block 11, the pressing block 11 moves towards the direction away from the fixed shell 2, the pressing block 11 is used for pressing the drill rod 12 placed in the drill rod box device 10, and the fixed shell 2 of the pressing device adopts a spigot positioning installation structure form so as to accurately press the corresponding drill rod; due to the action of the elastic component, when external force is put down to act on the roll collar 9, the compression bar 1 automatically resets; because the external force contacts and acts with the roll collar 9, the contact is smooth, the roll collar 9 can roll on the external force contact surface, the impact, friction and unbalanced load in the compaction process can be reduced, the compression bar 1 can move stably, in addition, because the diameter of one end of the compression bar 1, which is close to the compression block 11, is larger than that of one end, which is far away from the compression block 11, and the compression bar 1 is of a flat structure at one end, the compression bar 1 moves in a flat head type guiding way, the compression bar 1 can be effectively prevented from rotating, so that the drill rod 12 is more accurately compacted, and meanwhile, the section of the part of the compression bar 1, where the elastic component is arranged, is circular, and smooth and effective movement and compression of the elastic component can be ensured; the embodiment of the invention effectively solves the problems that a simple compressing device in the prior art is unstable in stress, and when external force is used for compressing, the stress is easy to deviate, so that the compressing efficiency of the drill rod 12 is low, and realizes that the drill rod 12 to be compressed can be accurately positioned and compressed, the compression is firm, the mechanical compression is adopted, the falling of the pressure loosening drill rod 12 can not occur, the impact and unbalanced load can be reduced, the movement of the compression rod is stable, and the compressing efficiency is improved.

Optionally, the elastic component comprises a backing plate 3, a disc spring 4, an adjusting block 5 and a locking nut 6; backing plate 3, dish spring 4 and adjusting block 5 all overlap and establish on depression bar 1, dish spring 4 is located between backing plate 3 and the adjusting block 5, and backing plate 3 is located the juncture of the first cavity of fixed casing 2 and second cavity, one side of adjusting block 5 is equipped with lock nut 6, lock through lock nut 6, thereby compress tightly depression bar 1 and the backing plate 3 of fixed casing 2 left end through the pretightning force that dish spring 4 produced, the adjustable dish spring 4 pretightning force of thickness of adjusting block 5 of dish spring 4 right-hand member, after the external force is eliminated, dish spring 4 pretightning force back-thrust lock nut 6 makes depression bar 1 automatic reset, when guaranteeing depression bar 1 simultaneously for compressing tightly the state of drilling rod 12, do not need too big pressure, in the in-process of depression bar 1 activity, the pressure or the size of restoring force that stable dish spring 4 received have also been played to elastic component's backing plate 3 and adjusting block 5.

Optionally, the cross section of the flat structure includes two planes and two arcuate surfaces, the two planes being opposite and symmetrical about one central axis of the flat structure, the two arcuate surfaces being opposite and symmetrical about the other central axis of the flat structure. The compression bar 1 is in a step shape, as shown in fig. 1, when the compression bar 1 is in a reset state, the flat structure is located in the first cavity of the fixed shell 2, the disc spring 4 section of the compression bar 1 is arranged in the second cavity of the fixed shell 2, the compression bar 1 starts to reach one end of the connecting roll collar 9 from the position where the base plate 3 is sleeved and the disc spring 4 is arranged, the diameters are all round, the section structure of the compression bar 1 is set to be in a step structure, on one hand, the movement of the disc spring 4 section is smoother when the compression bar 1 is compressed or reset, the friction force is small, the section of the flat structure is in a structure with two arc surfaces and two planes, and one arc surface is adjacent to one plane, so that the compression bar 1 can be prevented from being biased and rotated when being close to one end of the compression bar 11, the effect of the compression bar 11 is influenced, and the two arc surfaces are arranged to be opposite positions, and the flat structure has a smooth guiding function for the movement of the compression bar 1, so that the flat structure has functions of integrating the guiding function and the functions of preventing rotation, and the functions of the step structure of the compression bar 1 are more obvious.

Alternatively, the axial length of the flat structure is 1/4-1/5 of the total length of the compression bar 1. This can enhance the stability of the biasing of the plunger 1 toward the head of the presser 11, and can prevent the smooth operation of the compression return function of the plunger 1 other than the flat structure.

Optionally, the end of the compression bar 1 far away from the pressing block 11 is provided with a groove structure axially arranged along the compression bar 1, the roll collar 9 is fixed with the groove structure through the pin shaft 8, and the roll collar 9 can roll freely. The roller ring 9 can roll on the external force contact surface, so that friction, impact and unbalanced load are reduced, and the compression bar 1 can move stably.

Optionally, the radius of the roll collar 9 is larger than the distance between the center of the cross section of the roll collar 9 and the end edge of the compression bar 1. The external force is easier and more convenient to contact the roller ring 9, the contact area of the roller ring 9 can be increased, the stability of the roller ring 9 in motion under the action of the external force is further enhanced, and the stability of the compression bar 1 is ensured.

On the other hand, the embodiment of the invention also provides a using method of the drill rod compressing device, which comprises the following steps:

reserving a mounting spigot on the drill rod box device 10, wherein the size of the mounting spigot is matched with the outer diameter of the fixed shell 2, and the position of the mounting spigot is determined according to the contact area of the pressing block 11 and the drill rod 12 and the outer diameter of the fixed shell 2;

a plurality of vertically arranged drill rods 12 are placed in the drill rod box device 10, the fixed shell 2 is fixed at the mounting seam allowance of the drill rod box device through the connecting end and the connecting piece (bolt), and the pressing block 11 stretches into the drill rod box device 10;

the section width of the pressing block 11 is at least equal to the diameter of the two drill rods 12; when the pressing device is in an unoperated state, a distance is reserved between the pressing block 11 and the drill rod 12;

firstly, the roll collar 9 is pressed by external force, the roll collar 9 drives the compression bar 1 to compress the second drill rod 122 and the third drill rod 123 which are positioned above the first drill rod 121 at the bottom, the bottom plate of the drill rod box device 10 along the placing direction of the drill rod 12 is opened, and the first drill rod 121 which is in direct contact with the bottom plate starts to fall;

releasing the external force for pressing the roll collar 9, the pressing rod 1 drives the pressing block 11 to reset automatically, the second drill rod 122 starts to fall down, at the moment, the third drill rod 123 and the drill rods 12 above fall down by the diameter distance of one drill rod 12, and the roll collar 9 continuously drives the pressing rod 1 to move towards the position close to the drill rod 12 under the action of the external force and presses at least the third drill rod 123 and the fourth drill rod 124;

the external force of the pressing roller ring 9 is released again, the pressing rod 1 is automatically reset, the third drill rod 123 begins to fall, the fourth drill rod 124 and the drill rods 12 above the fourth drill rod fall by the distance of the diameter of the drill rod 12, the roller ring 9 is pressed again by the external force, and the pressing block 11 presses the fourth drill rod 124 and the fifth drill rod 125;

the operation of compressing the drill rod 12 and loosening the drill rod 12 is repeated in sequence until the bottom plate of the drill rod box device 10 is covered, the roll collar 9 is loosened, and the compression rod 1 is automatically reset under the action of the elastic component.

Specifically, when no external force is applied to press the roller collar 9, the roller collar 9 drives the pressing block 11 of the pressing rod 1 to move and reset, the pressing block 11 contacts with one side of the fixed shell 2, and the pressing block 11 and the drill rod 12 longitudinally arranged at the moment are furthest away. It should be noted that, in fig. 5, the width of the section of the drill box device 10 at the position where the pressing device is installed is larger than the width of the section of the drill rod 12 located in the vertical paper surface inward, the width of the drill box device 10 in the vertical paper surface inward is basically equal to the diameter of each drill rod 12, so that when the drill rod 12 falls down, the connecting line at the center of each drill rod 12 is basically approximate to a straight line, while the width of the section of the drill box device 10 at the position where the pressing device is installed is larger than the width of the section of the drill rod 12 located in the vertical paper surface inward, the installation space of the pressing device is provided, the movable space of the pressing block 11 is also provided, meanwhile, the width of the section of the drill rod 12 located in the vertical paper surface inward is approximate to the diameter of each drill rod 12, the structure of the drill box device 10 can ensure that the drill rods 12 fall down one by one, and the drill rods 12 are not arranged vertically, the condition of great negligence and left negligence or a great deal of congestion occurs, so that the compaction effect of the compaction device can be influenced or the compaction inconvenience can not be ensured, for example, the compaction order can not be ensured, the drill rods 12 can not be guaranteed to fall down one by one naturally, more than half of the length of each drill rod 12 is positioned in the drill rod box device 10 which is close to the diameter of the drill rod 12 and is vertical to the paper surface and is inward, only a small part of each drill rod 12 is exposed at the compaction device, when the press block 11 of the compaction device is used for compacting the drill rod 12 at the corresponding position, the drill rod 12 can deviate to a small position along the radial direction of the drill rod 12, and the rear part (the vertical direction of the drill rod box device 10 and the paper surface and the inward direction of the drill rod 12) of the drill rod 12 is contacted with the inner wall of the drill rod 12 under the action of the pressure of the press block 11 and the gravity of the drill rod 12, so that the drill rod 12 can be prevented from falling down. Of course, the structure of the drill rod box device 10 shown in fig. 5 is only one mode, the drill rod box device 10 can also be that the left side wall of the position where the drill rod 12 is placed is a plane, the right side surface is provided with a compressing device which widens towards the outside, and a certain moving space of the compressing device is reserved while a certain moving space of the pressing block 11 is ensured.

The use method of the drill rod pressing device can calculate and set the pressing time and the resetting time of the pressing rod 1 according to the diameter of the drill rod 12 and the displacement of the diameter of the drill rod 12 moving under the action of gravity, can enable the drill rods 12 to drop down orderly one by one when in use, is more stable and accurate in pressing the drill rods when in motion, is simple in use and high in efficiency, at least presses two drill rods when pressing the drill rods, correspondingly reduces the influence of the gravity of the drill rod 12 above the bottom drill rod on the bottom drill rod 12, or can be said to enhance the supporting capability of the bottom drill rod 12 on the upper drill rod, and at least presses two drill rods 12 when the pressing block 11 presses the drill rod 12, so that the pressing stress point can be enhanced and the pressing reliability can be enhanced.

Of course, in particular, the problem that the contact area of the pressing block 11 of the pressing device, the size of the drill box device 10, the size of the mounting spigot of the drill box device 10, whether the pressing device is easy to mount, and the like are considered, and comprehensively considered, the pressing block 11 of the embodiment of the invention is used for pressing two drill rods 12, reduces the mounting difficulty of the pressing device and the pressing block 11 thereof, can achieve the effect of stably pressing the drill rods 12, and can ensure that the drill rods 12 drop gradually.

Alternatively, when an external force acts on the roll collar 9, the displacement error of the roll collar 9 along the axial movement of the roll collar 9 is 0-5mm. During design, the axial space of the roll collar 9 is kept as small as possible, but the rotation of the roll collar 9 is not affected, the error range of 0-5mm is not affected, the stress and the direction of the roll collar 9 are affected as small as possible, and the accuracy of compressing the drill rod 12 is enhanced.

It should be noted that, the pressing device is preferably biased to the middle position in the length direction of the drill rod 12 in the position of the drill rod box device 10, so as to maintain the stress balance and stability of the drill rod 12, and meanwhile, the pressing device is also near the position above the first drill rod 121 directly contacted with the bottom plate in the position of the drill rod box device 10 or directly contacted with the first drill rod 121, so that the orderly pressing of the drill rod 12 can be completed.

When the first drill rod 121 is pressed, the first drill rod 121 just falls down, the second drill rod 122 and the third drill rod 123 are pressed, then when the second drill rod 122 and the third drill rod 123 are ready to be released, the pressing block 11 just starts to leave the surfaces of the second drill rod 122 and the third drill rod 123, the second drill rod 122 starts to fall down by gravity, the external force immediately applies a pressing force to the roll collar 9, the roll collar 9 drives the pressing rod 1 to move, the pressing block 11 presses the third drill rod 123 and the fourth drill rod 124, and the drill rod 12 is pressed more accurately through the rapid external force application or release, so that the untimely reaction of the falling down of the drill rod 12 is prevented.

In this specification, each embodiment is described in a progressive manner, and the same or similar parts of each embodiment are referred to each other, and each embodiment is mainly described as a difference from other embodiments.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the present application; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions.

Claims (6)

1. The drill rod compressing device is characterized by comprising a compression rod (1), a fixed shell (2), an elastic component, a protective cover (7) and a roll collar (9);

the compression bar (1) passes through the fixed shell (2), the protective cover (7) passes through the compression bar (1) and is fixed with the fixed shell (2), and the compression bar (1) is supported by the protective cover (7);

the fixed shell (2) comprises a first cavity and a second cavity which is integrated with the first cavity and is continuous, and the caliber of the second cavity is larger than that of the first cavity; the pressure bar (1) is connected with a pressing block (11) at one end far away from the protective cover (7), the pressure bar (1) is in a ladder shape, the diameter of one end close to the pressing block (11) is larger than the diameter of one end far away from the pressing block (11) on the axial section of the pressure bar (1), and the pressure bar (1) is in a flat structure at one end close to the pressing block (11);

the elastic component is sleeved on the pressure rod (1), one end of the elastic component is contacted with the junction of the first cavity and the second cavity, and the other end of the elastic component is fixed on the pressure rod (1);

the compression bar (1) is arranged outside the fixed shell (2) and one end, close to the protective cover (7), of the compression bar is connected with a roll collar (9), the axis direction of the roll collar (9) is perpendicular to the axis direction of the compression bar (1), and the roll collar (9) can rotate freely;

the outside of the fixed shell (2) is provided with a connecting end at one end close to the pressing block (11), and the connecting end is used for fixedly connecting the drill rod pressing device to a drill rod box device (10) provided with a drill rod (12);

the elastic component comprises a base plate (3), a disc spring (4), an adjusting block (5) and a locking nut (6);

the base plate (3), the disc spring (4) and the adjusting block (5) are all sleeved on the compression bar (1), the disc spring (4) is positioned between the base plate (3) and the adjusting block (5), the base plate (3) is positioned at the junction of the first cavity and the second cavity of the fixed shell (2), and the locking nut (6) is arranged on one side of the adjusting block (5);

the cross section of the flat structure comprises two planes and two arc-shaped surfaces, wherein the two planes are opposite in position and symmetrical with respect to one central axis of the flat structure, and the two arc-shaped surfaces are opposite in position and symmetrical with respect to the other central axis of the flat structure.

2. Drill rod compression device according to claim 1, characterized in that the axial length of the flat structure is 1/4-1/5 of the total length of the compression rod (1).

3. Drill rod pressing device according to claim 1, characterized in that the pressure rod (1) is provided with a groove structure arranged along the axial direction of the pressure rod (1) at the end far away from the pressure block (11), the roll collar (9) is fixed with the groove structure through a pin shaft (8), and the roll collar (9) can roll freely.

4. A drill rod pressing device according to claim 3, characterized in that the radius of the collar (9) is greater than the distance of the centre of the cross section of the collar (9) from the end edge of the compression rod (1).

5. A method of using a drill rod compressing apparatus according to any one of claims 1 to 4, comprising the steps of:

a mounting spigot is reserved on the drill box device (10), the size of the mounting spigot is matched with the outer diameter of the fixed shell (2), and the position of the mounting spigot is determined according to the contact area of the pressing block (11) and the drill rod (12) and the outer diameter of the fixed shell (2);

a plurality of vertically arranged drill rods are placed in the drill rod box device (10), the fixed shell (2) is fixed at the mounting seam allowance of the drill rod box device (10) through a connecting end and a connecting piece, and the pressing block (11) stretches into the drill rod box device (10);

the section width of the pressing block (11) is at least equal to the diameter of the two drill rods (12); when the pressing device is in an unoperated state, a distance is reserved between the pressing block (11) and the drill rod (12);

firstly, a roll collar (9) is pressed by external force, the roll collar (9) drives a compression bar (1) to compress a second drill rod (122) and a third drill rod (123) which are positioned above a first drill rod (121) at the bottom, a bottom plate at the bottom of a drill box device (10) along the placing direction of the drill rod (12) is opened, and the first drill rod (121) which is in direct contact with the bottom plate starts to fall;

releasing the external force for compressing the roll collar (9), wherein the compression bar (1) drives the pressing block (11) to automatically reset, the second drill rod (122) starts to fall, at the moment, the third drill rod (123) and the drill rods (12) above fall by the diameter distance of one drill rod (12), and the roll collar (9) continuously drives the compression bar (1) to move towards a position close to the drill rod (12) under the action of the external force and at least compresses the third drill rod (123) and the fourth drill rod (124);

the external force of the compression roller ring (9) is released again, the compression bar (1) is reset automatically, the third drill rod (123) starts to fall, the fourth drill rod (124) and the drill rods (12) above the fourth drill rod fall by the distance of the diameter of the drill rod (12), the roller ring (9) is compressed again through the external force, and the pressing block (11) compresses the fourth drill rod (124) and the fifth drill rod (125);

the operation of compressing the drill rod (12) and loosening the drill rod (12) is repeated in sequence until the bottom plate of the drill box device is covered, the roll collar (9) is loosened, and the compression rod (1) is automatically reset under the action of the elastic component.

6. The method of using a drill rod pressing device according to claim 5, wherein the displacement error of the roll collar (9) moving axially along the roll collar (9) is 0-5mm when an external force is applied to the roll collar (9).

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