CN111894481A - Anti-falling structure of screw drill - Google Patents

Abstract

The invention discloses an anti-falling structure of a screw drill, which comprises an anti-falling connecting rod and a supporting assembly, wherein the anti-falling connecting rod comprises a connecting rod body, a supporting disk and a first spring, the supporting disk is arranged on the connecting rod body, the first spring is arranged on one side of the supporting disk, and the supporting assembly comprises a supporting ring, a side ring, a clamping column, a second spring, a control rod, a middle rod and a control ring. Support ring and connecting rod body sliding connection to be located the supporting disk and keep away from one side of first spring, the side ring is installed on the support ring, the card post passes second spring and side ring sliding connection, and the control lever is installed to the card post, and control ring and connecting rod body sliding connection are connected through intermediate lever and control lever. The support ring and the drilling tool are pressed, the clamping columns enter the grooves of the drilling tool, the second spring is used for locking the support ring and the drilling tool, the drilling tool cannot fall off due to vibration and impact, and then the control ring is pressed down, so that the drilling tool can be conveniently taken out.

Description

Anti-falling structure of screw drill

Technical Field

The invention relates to the technical field of drilling tools, in particular to an anti-falling structure of a screw drilling tool.

Background

The screw drilling tool is a positive displacement downhole power drilling tool which takes drilling fluid as power and converts hydraulic pressure energy into mechanical energy, and mainly comprises a bypass valve, a stator, a drilling tool, a universal shaft assembly, a transmission shaft, a drill bit, a motor and the like.

Disclosure of Invention

The invention aims to provide an anti-falling structure of a screw drilling tool, and aims to solve the problem that the existing structure is easy to cause the falling of the drilling tool due to loose connection.

In order to achieve the above object, the present invention provides an anti-drop structure for a screw drill, including an anti-drop connecting rod and a support assembly, wherein the anti-drop connecting rod includes a connecting rod body, a support plate and a first spring, the support plate is fixedly connected with the connecting rod body, the connecting rod body passes through the support plate, the first spring is fixedly connected with the support plate and is located at one side of the support plate, the support assembly includes a support ring, a side ring, a clamping column, a second spring, a control rod, a middle rod and a control ring, the support ring has a plurality of first through holes, the plurality of first through holes are distributed on the support ring, the support ring is slidably connected with the connecting rod body and is located at one side of the support plate far away from the first spring, the side ring is fixedly connected with the support ring and is located at one side of the support ring near the first spring, the card post with the quantity of second spring has a plurality ofly, and is a plurality of the card post respectively with side ring sliding connection, and be located the inboard of side ring, it is a plurality of the second spring with side ring fixed connection, and be located the side ring with between the card post, the quantity of control lever has a plurality ofly, and is a plurality of the control lever respectively with a plurality of card post fixed connection, and be located respectively in the first through-hole, the control ring with connecting rod body sliding connection, and be located the support ring is kept away from one side of supporting disk, the quantity of intermediate lever has a plurality ofly, and is a plurality of the intermediate lever respectively with the control ring rotates to be connected, and with control lever fixed connection.

The anti-falling connecting rod further comprises a blocking disc, wherein the blocking disc is fixedly connected with the first spring and is positioned on one side, far away from the supporting disc, of the first spring.

The anti-drop connecting rod further comprises a gasket, and the gasket is fixedly connected with the supporting disc and is positioned between the supporting disc and the supporting ring.

The support assembly further comprises a reinforcing rod, and the reinforcing rod is fixedly connected with the middle rod and the control rod and is located between the middle rod and the control rod.

The clamping column comprises a clamping column body and an inclined column, wherein the inclined column is fixedly connected with the clamping column body and is positioned on one side, far away from the side ring, of the clamping column body.

The support assembly further comprises a stop column, and the stop column is fixedly connected with the support ring and is positioned on one side, far away from the support disc, of the support ring.

According to the anti-falling structure of the screw drill, the supporting disc is fixedly connected with the connecting rod body, the first spring is fixedly connected with the supporting disc, the connecting rod body is inserted into the drill, and then the supporting disc and the drill are fixed to complete anti-falling connection of the supporting disc and the drill; the first through holes are distributed on the support ring, the support ring is connected with the connecting rod body in a sliding mode, and the support ring can be pressed on the support plate and the drilling tool in a sliding mode; the side ring is fixedly connected with the support ring, the clamping columns and the second springs are multiple in number, the clamping columns are respectively connected with the side ring in a sliding mode, the second springs are fixedly connected with the side ring, are connected with the grooves in the drilling tool through the clamping columns on the side ring and are fixed through the second springs to complete the fixation with the drilling tool; a plurality of the control rod respectively with a plurality of card post fixed connection, the control ring with connecting rod body sliding connection, it is a plurality of the intermediate lever respectively with the control ring rotates to be connected, and with control rod fixed connection, the gliding the control ring can make the intermediate lever promotes the control rod removes, and then promote with the control rod is connected the card post withdraws from in the recess of drilling tool and can conveniently take off the drilling tool. The support ring and the drilling tool are pressed, the clamping column enters the groove of the drilling tool, the second spring is locked to complete the fixation with the drilling tool, the drilling tool cannot fall off due to vibration and impact, and the control ring is pressed down to conveniently take out the drilling tool, so that the problem that the existing structure is loosened to cause the falling of the drilling tool easily is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a top structural view of an anti-drop structure of a screw drill according to the present invention;

FIG. 2 is a bottom structural view of an anti-drop structure of a screw drill according to the present invention;

fig. 3 is a structural view of the drilling tool of the present invention.

1-drop-proof connecting rod, 2-support component, 3-drilling tool, 11-connecting rod body, 12-support disk, 13-first spring, 14-baffle disk, 15-gasket, 21-support ring, 22-side ring, 23-clamping column, 24-second spring, 25-control ring, 26-middle rod, 27-control rod, 28-reinforcing rod, 29-stop column, 211-first through hole, 231-clamping column body, 232-inclined column, 251-control ring body, 252-pressure ring, 253-guide rod, 254-first pull rod, 255-second pull rod, 256-pull ring, 257-third spring and 258-limit cap.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, 2 and 3, the present invention provides an anti-releasing structure for a screw drill, including:

prevent falling connecting rod 1 and supporting component 2, prevent falling connecting rod 1 includes connecting rod body 11, supporting disk 12 and first spring 13, the supporting disk 12 with connecting rod body 11 fixed connection, connecting rod body 11 passes the supporting disk 12, first spring 13 with supporting disk 12 fixed connection, and lie in one side of supporting disk 12, supporting component 2 includes support ring 21, side ring 22, card post 23, second spring 24, control lever 27, intermediate lever 26 and control ring 25, support ring 21 has a plurality of first through-holes 211, a plurality of first through-holes 211 distribute on support ring 21, support ring 21 with connecting rod body 11 sliding connection, and lie in one side that first spring 13 was kept away from to the supporting disk 12, side ring 22 with support ring 21 fixed connection, and lie in one side that support ring 21 is close to first spring 13, the quantity of calorie of post 23 with second spring 24 has a plurality ofly, and is a plurality of the calorie of post 23 respectively with side ring 22 sliding connection, and be located the inboard of side ring 22, and is a plurality of second spring 24 with side ring 22 fixed connection, and be located side ring 22 with between the calorie of post 23, the quantity of control lever 27 has a plurality ofly, and is a plurality of control lever 27 respectively with a plurality of calorie of post 23 fixed connection, and be located respectively in first through-hole 211, control ring 25 with connecting rod body 11 sliding connection, and be located support ring 21 keeps away from one side of supporting disk 12, the quantity of intermediate lever 26 has a plurality ofly, a plurality of intermediate lever 26 respectively with control ring 25 rotates to be connected, and with control lever 27 fixed connection.

In this embodiment, the drop-proof connecting rod 1 includes a connecting rod body 11, a supporting plate 12 and a first spring 13, the supporting plate 12 is fixedly connected with the connecting rod body 11, the connecting rod body 11 passes through the supporting plate 12, the first spring 13 is fixedly connected with the supporting plate 12 and is located at one side of the supporting plate 12, the connecting rod body 11 is inserted into the drilling tool 3, and then the supporting plate 12 and the drilling tool 3 are fixed to complete drop-proof connection of the two; the support assembly 2 comprises a support ring 21, a side ring 22, a clamping column 23, a second spring 24, a control rod 27, a middle rod 26 and a control ring 25, wherein the support ring 21 is provided with a plurality of first through holes 211, the plurality of first through holes 211 are distributed on the support ring 21, the support ring 21 is connected with the connecting rod body 11 in a sliding manner and is positioned on one side of the support plate 12 away from the first spring 13, and the support ring 21 can be pressed on the support plate 12 and the drilling tool 3 in a sliding manner; the side ring 22 is fixedly connected with the support ring 21 and is positioned on one side of the support ring 21 close to the first spring 13, a plurality of clamping columns 23 and a plurality of second springs 24 are provided, the plurality of clamping columns 23 are respectively connected with the side ring 22 in a sliding manner and are positioned on the inner side of the side ring 22, the plurality of second springs 24 are fixedly connected with the side ring 22 and are positioned between the side ring 22 and the clamping columns 23, the clamping columns 23 on the side ring 22 are connected with the grooves on the drilling tool 3, and the second springs 24 are fixed to finish the fixation with the drilling tool 3; the quantity of control lever 27 has a plurality ofly, and is a plurality of control lever 27 respectively with a plurality of calorie of post 23 fixed connection, and be located respectively in first through-hole 211, control ring 25 with connecting rod body 11 sliding connection, and be located support ring 21 keeps away from one side of supporting disk 12, the quantity of intermediate lever 26 has a plurality ofly, and is a plurality of intermediate lever 26 respectively with control ring 25 rotates to be connected, and with control lever 27 fixed connection, the gliding control ring 25 can make intermediate lever 26 promotes control lever 27 removes, and then promote with control lever 27 connects calorie of post 23 withdraws from in the recess of drilling tool 3 and can conveniently take off drilling tool 3. The support ring 21 and the drilling tool 3 are pressed, the clamping columns 23 enter the grooves of the drilling tool 3, the drilling tool 3 cannot fall off due to vibration and impact after the clamping columns are locked by the second springs 24, and the drilling tool 3 can be conveniently taken out by pressing the control ring 25, so that the problem that the drilling tool 3 falls off due to loose connection of the conventional structure is solved.

Further, the support assembly 2 further comprises a reinforcing rod 28, and the reinforcing rod 28 is fixedly connected with the intermediate rod 26 and the control rod 27 and is located between the intermediate rod 26 and the control rod 27.

In this embodiment, the reinforcing bar 28 can increase the connection strength between the intermediate bar 26 and the control bar 27, and prevent the control bar 27 from being broken due to excessive force during operation.

Further, the clamping column 23 includes a clamping column body 231 and an inclined column 232, and the inclined column 232 is fixedly connected to the clamping column body 231 and located on one side of the clamping column body 231 away from the side ring 22.

In this embodiment, the inclined column 232 is more beneficial to the drilling tool 3 pushing the inclined column 232 to move backwards when the support ring 21 is close to the drilling tool 3, and then automatically bouncing into the groove of the drilling tool 3, so that the assembly is more convenient.

Further, the anti-drop connecting rod 1 further comprises a blocking disc 14, wherein the blocking disc 14 is fixedly connected with the first spring 13 and is located on one side, far away from the supporting disc 12, of the first spring 13.

In the present embodiment, the stopper disc 14 may enable the pressure of the first spring 13 to be more uniformly applied to the drill 3 through the stopper disc 14, so that the support disc 12 and the support ring 21 may be more stably compressed.

Further, the anti-drop connecting rod 1 further comprises a gasket 15, and the gasket 15 is fixedly connected with the supporting disc 12 and is located between the supporting disc 12 and the supporting ring 21.

In the present embodiment, the spacer 15 is used to increase the uniformity of the force applied between the supporting disc 12 and the supporting ring 21, so that the supporting force can be evenly distributed on the supporting ring 21, and the stability of the connection is further improved.

Further, the support assembly 2 further includes a stop post 29, and the stop post 29 is fixedly connected to the support ring 21 and located on a side of the support ring 21 away from the support plate 12.

In the present embodiment, the stop posts 29 are used to limit the moving position of the control ring 25, so as to prevent the control rod 27 from impacting the side ring 22 and damaging the side ring 22 due to the excessive moving distance of the control ring 25.

Further, referring to fig. 1, the control ring 25 includes a control ring body 251, a pressing ring 252, four guide rods 253, a first pull rod 254 and a second pull rod 255, the pressing ring 252 is slidably connected to the connecting rod body 11 and is located on one side of the control ring body 251 away from the support ring 21, the number of the guide rods 253 is four, the four guide rods 253 are fixedly connected to the support ring 21 and are slidably connected to the pressing ring 252, the first pull rod 254 is rotatably connected to the pressing ring 252 and is located on one side of the pressing ring 252, the second pull rod 255 is rotatably connected to the first pull rod 254 and the support ring 21 and is located on one side of the support ring 21, and two sets of the first pull rod 254 and the second pull rod 255 are arranged in a mirror image relative to the connecting rod body 11.

In this embodiment, the pressing ring 252 can move down along the guiding rod 253, so as to push the control ring body 251 to move down, so as to drive the clamping column 23 to be away from the drilling tool 3, so that the drilling tool 3 can be taken down, and the first pulling rod 254 and the second pulling rod 255 are rotatably connected, so that the pressing ring 252 can be driven to move down by directly and transversely pulling the first pulling rod 254 and the second pulling rod 255, so that the force is more convenient, and the situation that the pressing ring 252 is pressed in a unidirectional manner to cause inconvenient force application is avoided.

Further, the control ring 25 further includes two pull rings 256, and the two pull rings 256 are respectively fixedly connected to the two first pull rods 254 and are located at one side of the first pull rods 254.

In this embodiment, the pull ring 256 is used to facilitate a user to pull the first pull rod 254 and the second pull rod 255, so as to more conveniently drive the press ring 252 to move down.

Further, the control ring 25 further includes a third spring 257, the third spring 257 is fixedly connected to the support ring 21, and the guide rod 253 passes through the third spring 257.

In this embodiment, the pressing ring 252 tends to move downward due to gravity, which may cause the clamping column 23 to move away from the drilling tool 3 to cause unstable connection, so the third spring 257 is added to resist the gravity of the pressing ring 252, thereby increasing the stability of connection.

Further, the control ring 25 further includes four limiting caps 258, and the four limiting caps 258 are respectively fixedly connected to the four guiding rods 253 and are located on one side of the guiding rods 253, which is far away from the support ring 21.

In this embodiment, the limiting cap 258 is used to limit the farthest position of the pressing ring 252, so as to prevent the pressing ring 252 from separating from the guiding rod 253 during the movement.

The working principle and the using process of the invention are as follows: referring to fig. 1 and 2, after the present invention is installed, the support ring 21 is close to and pressed with the drilling tool 3, the inclined column 232 is withdrawn in the pressing process and finally enters the groove of the drilling tool 3 under the action of the second spring 24, and is pressed tightly, and the support ring 21 abuts against the support disc 12 to complete the fixation with the drilling tool 3 without falling off; the pull ring 256 is pulled to drive the first pull rod 254 and the second pull rod 255, so as to drive the press ring 252 to press down, so as to push the control ring body 251 to move down, and the middle rod 26 and the control rod 27 drive the clamping column 23 to be away from the drilling tool 3, so that the drilling tool 3 can be conveniently taken down.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. An anti-drop structure of a screw drill is characterized in that,

including preventing falling connecting rod and supporting component, prevent falling the connecting rod and include connecting rod body, supporting disk and first spring, the supporting disk with connecting rod body fixed connection, the connecting rod body passes the supporting disk, first spring with supporting disk fixed connection to be located one side of supporting disk, the supporting component includes support ring, side ring, card post, second spring, control lever, intermediate lever and control ring, the support ring has a plurality of first through-holes, and is a plurality of first through-holes distribute on the support ring, the support ring with connecting rod body sliding connection to be located one side that the first spring was kept away from to the supporting disk, the side ring with support ring fixed connection to be located one side that the support ring is close to the first spring, the card post with the quantity of second spring has a plurality ofly, a plurality of the card post respectively with side ring sliding connection, the second springs are fixedly connected with the side rings and located between the side rings and the clamping columns, the control rods are multiple in number, the control rods are fixedly connected with the clamping columns respectively and located in the first through holes respectively, the control rings are connected with the connecting rod body in a sliding mode and located on one side, far away from the supporting disc, of the supporting ring, the middle rods are multiple in number, and the middle rods are connected with the control rings in a rotating mode and fixedly connected with the control rods respectively.

2. The anti-drop structure of screw drill according to claim 1,

the anti-falling connecting rod further comprises a blocking disc, wherein the blocking disc is fixedly connected with the first spring and is positioned on one side, far away from the supporting disc, of the first spring.

3. The anti-drop structure of screw drill according to claim 2,

the anti-drop connecting rod further comprises a gasket, and the gasket is fixedly connected with the supporting disc and is positioned between the supporting disc and the supporting ring.

4. The anti-drop structure of screw drill according to claim 1,

the support assembly further comprises a reinforcing rod, and the reinforcing rod is fixedly connected with the middle rod and the control rod and is located between the middle rod and the control rod.

5. The anti-drop structure of screw drill according to claim 4,

the clamping column comprises a clamping column body and an inclined column, wherein the inclined column is fixedly connected with the clamping column body and is positioned on one side, far away from the side ring, of the clamping column body.

6. The anti-drop structure of screw drill according to claim 5,

the support assembly further comprises a stop column, and the stop column is fixedly connected with the support ring and is positioned on one side, far away from the support disc, of the support ring.

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