CN216341978U - Hydraulic telescopic reducing chuck - Google Patents
Hydraulic telescopic reducing chuck Download PDFInfo
- Publication number
- CN216341978U CN216341978U CN202123159897.7U CN202123159897U CN216341978U CN 216341978 U CN216341978 U CN 216341978U CN 202123159897 U CN202123159897 U CN 202123159897U CN 216341978 U CN216341978 U CN 216341978U
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- slip
- seat
- chuck
- reducing
- fixing seat
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- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a hydraulic telescopic reducing chuck, which comprises an upper fixed seat, a lower fixed seat and a chuck assembly rotatably arranged between the upper fixed seat and the lower fixed seat, wherein the chuck assembly comprises: the chuck shaft is internally provided with a drill rod channel, and the side surface of the drill rod channel is provided with a plurality of slip chutes; the slip seat is arranged in the lower fixed seat, and the inner side surface of the slip seat is provided with a conical surface with a large upper part and a small lower part; the slip blocks are arranged in the slip sliding groove, each slip block comprises a sliding surface matched with the conical surface and a clamping surface arranged along the axial direction of the drill pipe channel, and the slip blocks are arranged in the slip sliding groove in a vertically sliding mode along the conical surface; and the reducing driving assembly is used for driving the slip block to slide up and down along the slip seat. According to the drill pipe clamping device, the reducing driving assembly drives the slip block to slide up and down along the slip seat to clamp the drill pipe, the chuck assembly is arranged in the upper fixing seat and the lower fixing seat in a rotating mode, the drill screwing and the drill unloading are not limited by the distance of the pitch length, the structure is simple, the operation is convenient, and the operation efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of petroleum machinery, in particular to a hydraulic telescopic reducing chuck.
Background
The most common type of drill pipe connecting mechanism used in most drilling machines today is a ceiling-hung top drive. The lifting-clamping type top driver can be used for connecting a drill rod by a lifting sub, but the lifting sub cannot provide enough torque for the top driver, so that when the lifting drill rod is connected with the drill rod in a hole and screwed, a screwing device is needed to provide enough torque to screw the drill rod. The conventional spinner needs manual work to frequently assemble and disassemble a clamping slip, and in the actual construction process, two persons are usually required to cooperate with frequent operation, so that the relative displacement between drill rods is easily caused, and the pushing or pulling force loss of the connecting threads of the drill rods is easily caused.
Therefore, the Chinese patent CN104594831A provides an integrated drill rod clamping and screwing-off device of a core drill, which is provided with an upper clamp holder, wherein the upper clamp holder comprises an upper clamp holder shell, a core tube is arranged in the upper clamp holder shell, a lower clamp holder is arranged below the core tube, the lower clamp holder comprises a base, a roller slip assembly is arranged in the base, and a hydraulic oil cylinder is arranged outside the base of the lower clamp holder; the top of the base is upwards provided with a sleeve which is sleeved on the lower part of the core tube, and a drill rod pitch adjusting device is arranged outside the core tube between the lower holder and the upper holder. According to the scheme, the automatic clamping of the drill rod is realized through the roller slip assembly in the lower clamp holder.
However, the above solution has the following disadvantages:
(1) the structure is complex, the lower slips are arranged in the base through the roller slip assembly, and the production, assembly and maintenance costs are increased;
(2) the pipe core and the sleeve are connected through threads, when automatic clamping and screwing-unscrewing operations are carried out, the upper slip and the lower slip can only drive the drill rod to rotate within a pitch length distance, after the drill rod rotates to reach the pitch length distance, pressure relief and pressurization operations need to be carried out on the upper slip, the lower slip and the hydraulic motor again, the operation steps are complex, the construction efficiency is reduced, and the pipe core and the sleeve are seriously abraded along with the extension of the service time to influence the normal use of the pipe core and the sleeve.
In view of this, there is a need to improve the structure of the existing hydraulic telescopic reducing chuck, simplify the structure, reduce the cost and improve the construction efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the existing hydraulic telescopic reducing chuck is complex in structure, high in production and maintenance cost, inconvenient to use and influenced in construction efficiency.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
the utility model provides a hydraulic stretching reducing chuck, is in including last fixing base and lower fixing base and the rotation setting that set up from top to bottom go up the fixing base with chuck assembly between the fixing base down, chuck assembly sets up through rotating coupling assembling go up the fixing base with on the fixing base down, chuck assembly includes:
the upper end of the chuck shaft penetrates through the upper fixing seat upwards; a drill rod channel is arranged in the chuck shaft, and a plurality of slip sliding grooves are formed in the side surface of the drill rod channel along the axial direction of the drill rod channel;
the slip seat is arranged in the lower fixing seat, a slip slideway is arranged in the slip seat, the side surface of the slip slideway is a conical surface with a large upper part and a small lower part, and the chuck shaft is arranged in the slip slideway;
the slip blocks are arranged in the slip chutes, each slip block comprises a sliding surface matched with the conical surface and a clamping surface arranged along the axial direction of the drill pipe channel, and the slip blocks are arranged in the slip chutes in a vertically sliding mode along the conical surface;
and the reducing driving assembly is arranged between the upper fixing seat and the lower fixing seat and used for driving the slip block to slide up and down along the slip seat.
In the above aspect, preferably, a connecting flange is provided on a top surface of the chuck shaft.
In the foregoing aspect, preferably, the reducing drive assembly includes:
the upper end and the lower end of the driving oil cylinder are hinged with the upper fixing seat and the lower fixing seat respectively;
the lower end of the slip connecting rod is hinged with the slip block;
and the slip connecting rod supporting seat is arranged on the upper fixing seat, and the upper end of the slip connecting rod is hinged with the slip connecting rod supporting seat.
In the above aspect, preferably, the rotation connection assembly includes:
the upper bearing seat is arranged on the upper fixed seat, and an upper bearing is arranged between the upper bearing seat and the upper fixed seat;
the lower bearing seat is arranged on the lower fixed seat, and a lower bearing is arranged between the lower bearing seat and the lower fixed seat;
the upper bearing seat and the lower bearing seat are connected with the chuck assembly.
In the above scheme, preferably, the slip connecting rod supporting seat is fixedly installed on the upper bearing seat; an upper chuck shaft channel is arranged in the upper bearing seat, and the chuck shaft is arranged in the upper chuck shaft channel.
In the above scheme, preferably, a lower chuck shaft passage is provided in the lower bearing seat, and the chuck shaft and the slip seat are provided in the lower chuck shaft passage.
In the above aspect, preferably, an end cover is further disposed on a bottom surface of the chuck shaft.
In the above scheme, preferably, the side surfaces of the upper fixing seat and the lower fixing seat are respectively provided with an upper connecting lug and a lower connecting lug, and the upper end and the lower end of the driving oil cylinder are respectively hinged to the upper connecting lug and the lower connecting lug.
Compared with the prior art, the hydraulic telescopic reducing chuck provided by the utility model has the advantages that the chuck assembly is rotationally arranged in the upper fixing seat and the lower fixing seat through the rotating connecting assembly, the reducing driving assembly drives the slip block to slide up and down along the slip seat to quickly clamp the drill rod, the suspension torque is provided for the drill rod, a spinner is not needed, and the construction efficiency is improved. The chuck assembly is arranged in the upper fixing seat and the lower fixing seat in a rotating mode, the pitch length and distance are not limited when the drill is screwed and disassembled, the structure is simple, the operation is convenient, the abrasion of the chuck during operation is reduced, and the service life of the chuck is prolonged.
Drawings
FIG. 1 is a schematic structural view of a hydraulic telescopic reducing chuck according to the present invention;
FIG. 2 is a schematic diagram of the movement of the hydraulic telescopic reducing chuck according to the present invention;
fig. 3 is a schematic working diagram of the hydraulic telescopic reducing chuck of the utility model.
The correspondence between the names and reference numbers of the components in fig. 1 to 3 is as follows:
an upper fixed seat 1, a lower fixed seat 2, a chuck shaft 3, a slip seat 4, a slip block 5, a driving oil cylinder 6, a slip connecting rod 7, a slip connecting rod supporting seat 8,
the upper connecting lug 11 is connected with the lower connecting lug,
the lower part of the connecting ear 21 is provided with a connecting lug,
a pipe channel 31, a slip chute 32, a coupling flange 33, an end cap 34,
the sliding surface 51, the clamping surface 52,
Detailed Description
The utility model provides a hydraulic telescopic reducing chuck, which is used for clamping a drill rod by sliding a slip up and down along a slip seat and realizing the operation of screwing/removing a drill by rotating chuck assemblies arranged in an upper fixing seat and a lower fixing seat, thereby simplifying the structure and the operation steps of the chuck and improving the operation efficiency. The utility model is described in detail below with reference to the drawings and the detailed description.
As shown in fig. 1, 2 and 3, the hydraulic telescopic reducing chuck provided by the utility model comprises an upper fixing seat 1, a lower fixing seat 2 and a chuck assembly which are arranged up and down, wherein the chuck assembly is rotatably arranged between the upper fixing seat 1 and the lower fixing seat 2 through a rotating connecting assembly, and comprises a chuck shaft 3, a slip seat 4, a slip block 5, a reducing driving assembly and a rotating connecting assembly.
The upper end of the chuck shaft 3 upwards penetrates through the upper fixing seat 1. A drill rod channel 31 is arranged in the chuck shaft 3, and a plurality of slip chutes 32 arranged along the axial direction of the drill rod channel 31 are arranged on the side surface of the drill rod channel 31. The top surface of the chuck shaft 3 is provided with a connecting flange 33, which is convenient for the hydraulic telescopic reducing chuck to be quickly connected with a drilling machine.
The slip seat 4 sets up in fixing base 2 down, is equipped with the slips slide in the slip seat 4, and the side of slips slide sets up to big-end-up's conical surface, and chuck shaft 3 sets up in the slips slide, and chuck shaft 3's lower extreme runs through slip seat 4 and sets up.
The slip blocks 5 are respectively arranged in the slip chutes 32, each slip block 5 comprises a sliding surface 51 matched with the conical surface and a clamping surface 52 arranged along the axial direction of the drill pipe channel 31, the slip blocks 5 are arranged in the slip chutes 32 in a sliding mode up and down along the conical surface, and the plurality of clamping surfaces 52 can clamp the drill pipe along the sliding of the slip blocks 5.
Reducing drive assembly sets up at last fixing base 1 and down between the fixing base 2 for drive slip piece 5 slides from top to bottom along slip seat 4 and sets up. The reducing drive assembly comprises a drive oil cylinder 6, a slip connecting rod 7 and a slip connecting rod supporting seat 8, wherein the upper end and the lower end of the drive oil cylinder 6 are hinged with the upper fixing seat 1 and the lower fixing seat 2 respectively and used for changing the distance between the upper fixing seat and the lower fixing seat. Slips connecting rod supporting seat 8 sets up on last fixing base 1, and slips connecting rod 7's upper end is articulated with slips connecting rod supporting seat 8, and slips connecting rod 7's lower extreme is articulated with slips piece 5, drives slips piece 5 through slips connecting rod 7 and reciprocates.
The rotary connecting assembly comprises an upper bearing seat 91 and a lower bearing seat 92, the upper bearing seat 91 and the lower bearing seat 92 are respectively arranged on the upper fixing seat 1 and the lower fixing seat 2, an upper bearing 93 and a lower bearing 94 are respectively arranged between the upper bearing seat 91 and the upper fixing seat 1 and between the lower bearing seat 92 and the lower fixing seat 2, the chuck assembly is connected with the upper bearing seat 91 and the lower bearing seat 92, and the upper fixing seat 1 and the lower fixing seat 2 are rotatably arranged.
In one embodiment of the present invention, the upper bearing seat 91 is provided with an upper chuck shaft passage 95, the slip link supporting seat 8 is fixed to the upper bearing seat 91, and the upper end of the chuck shaft 3 is disposed in the upper chuck shaft passage 95 and extends upward through the upper fixing seat 1.
In another embodiment of the present invention, the lower bearing seat 92 is provided with a lower chuck shaft channel 96, the lower end of the chuck shaft 3 and the slip bowl 4 are disposed in the lower chuck shaft channel 96, the bottom surface of the chuck shaft 3 is further provided with an end cover 34, the end cover 34 is fixedly connected with the chuck shaft 3, the slip bowl 4 and the lower bearing seat 92 through bolts,
in another embodiment of the utility model, the side surfaces of the upper fixing seat 1 and the lower fixing seat 2 are respectively provided with an upper connecting lug 11 and a lower connecting lug 21, and the upper end and the lower end of the driving oil cylinder 6 are respectively hinged with the upper connecting lug 11 and the lower connecting lug 21, so that the driving oil cylinder 6 is vertically arranged, the installation of the driving oil cylinder 6 is convenient, and the cost of the driving oil cylinder 6 is reduced.
The working process of the utility model is as follows:
preparing: the chuck is confirmed to be in an initial state of use, and the drive cylinder 6 is in an extended state in the initial state.
The first step is as follows: the slip segments 5 are selected and installed according to the diameter of the drill pipe to be gripped, and the slip segments 5 are installed in the slip chutes 32.
The second step is that: the drill rod is put into the chuck from the bottom up, and the head of the drill rod is lifted to the top of the chuck shaft 3, so as to ensure that the clamping part of the slip block 5 is the thinner part of the drill rod.
The third step: after the drill rod is in place, the driving oil cylinder 6 is operated to retract, at the moment, the driving oil cylinder 6 drives the upper fixed seat 1 and the slip connecting rod supporting seat 8 to move downwards, and the moving path of the driving oil cylinder is shown by an arrow a in fig. 3;
the slip connecting rod 7 pushes the slip block 5 to move downwards along the slip slideway in the slip seat 4 in an inclined way, and the moving path of the slip block 5 is shown by an arrow b in figure 3;
as the slip segments 5 move, the chuck assembly moves relatively as indicated by arrows c, d so that the gripping surfaces 52 of the slip segments 5 grip the drill rod and are compressed by the slip bowl 4 to generate a certain torque.
The fourth step: after the slip block 5 clamps the drill rod, the drill can be screwed and unscrewed through a drilling machine.
The hydraulic telescopic reducing chuck provided by the utility model can quickly clamp a drill rod and simultaneously provide enough screwing torque, and the power head is configured with the chuck and then directly clamps the drill rod to perform screwing or drill lifting operation, so that the link of using a screwing device is omitted, and the time and the labor are saved.
Compared with the prior art, the hydraulic telescopic reducing chuck provided by the utility model has the advantages that the chuck assembly is rotatably connected with the upper fixing seat and the lower fixing seat through the rotating connecting assembly, the chuck assembly can freely rotate in the upper fixing seat and the lower fixing seat without being limited by the distance of the pitch length, the steps of screwing/unscrewing the drill are simplified, and the efficiency of screwing/unscrewing the drill is greatly improved. The slips with corresponding sizes are replaced, so that the chuck is suitable for drill rods with different specifications, the application range of the chuck is expanded,
in the utility model, the rotary connecting assembly comprises the upper bearing seat, the lower bearing seat, the upper bearing and the lower bearing which are arranged on the upper fixing seat and the lower fixing seat, so that the friction force between the chuck assembly and the upper fixing seat and between the chuck assembly and the lower fixing seat during rotation is reduced, the abrasion of the hydraulic telescopic reducing chuck is reduced, and the service life of the hydraulic telescopic reducing chuck is prolonged.
The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
Claims (8)
1. The utility model provides a hydraulic stretching reducing chuck, its characterized in that, last fixing base and lower fixing base and the rotation setting that sets up including from top to bottom go up the fixing base with chuck assembly between the fixing base down, chuck assembly sets up through rotating coupling assembling go up the fixing base with on the fixing base down, chuck assembly includes:
the upper end of the chuck shaft penetrates through the upper fixing seat upwards; a drill rod channel is arranged in the chuck shaft, and a plurality of slip sliding grooves are formed in the side surface of the drill rod channel along the axial direction of the drill rod channel;
the slip seat is arranged in the lower fixing seat, a slip slideway is arranged in the slip seat, the side surface of the slip slideway is a conical surface with a large upper part and a small lower part, and the chuck shaft is arranged in the slip slideway;
the slip blocks are arranged in the slip chutes, each slip block comprises a sliding surface matched with the conical surface and a clamping surface arranged along the axial direction of the drill pipe channel, and the slip blocks are arranged in the slip chutes in a vertically sliding mode along the conical surface;
and the reducing driving assembly is arranged between the upper fixing seat and the lower fixing seat and used for driving the slip block to slide up and down along the slip seat.
2. The hydraulically telescopic reducing chuck according to claim 1, wherein a connecting flange is provided on the top surface of the chuck shaft.
3. The hydraulic telescoping reducing chuck according to claim 1, wherein the reducing drive assembly comprises:
the upper end and the lower end of the driving oil cylinder are hinged with the upper fixing seat and the lower fixing seat respectively;
the lower end of the slip connecting rod is hinged with the slip block;
and the slip connecting rod supporting seat is arranged on the upper fixing seat, and the upper end of the slip connecting rod is hinged with the slip connecting rod supporting seat.
4. The hydraulic telescoping reducing chuck according to claim 3, wherein the rotating connection assembly comprises:
the upper bearing seat is arranged on the upper fixed seat, and an upper bearing is arranged between the upper bearing seat and the upper fixed seat;
the lower bearing seat is arranged on the lower fixed seat, and a lower bearing is arranged between the lower bearing seat and the lower fixed seat;
the upper bearing seat and the lower bearing seat are connected with the chuck assembly.
5. The hydraulic telescopic reducing chuck according to claim 4, wherein the slip connecting rod supporting seat is fixedly mounted on the upper bearing seat; an upper chuck shaft channel is arranged in the upper bearing seat, and the chuck shaft is arranged in the upper chuck shaft channel.
6. The hydraulic telescopic reducing chuck according to claim 4, wherein a lower chuck shaft passage is formed in the lower bearing seat, and the chuck shaft and the slip seat are arranged in the lower chuck shaft passage.
7. The hydraulic telescopic reducing chuck according to claim 6, wherein an end cap is further provided on the bottom surface of the chuck shaft.
8. The hydraulic telescopic reducing chuck according to claim 3, wherein the side surfaces of the upper fixing seat and the lower fixing seat are respectively provided with an upper connecting lug and a lower connecting lug, and the upper end and the lower end of the driving oil cylinder are respectively hinged to the upper connecting lug and the lower connecting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123159897.7U CN216341978U (en) | 2021-12-15 | 2021-12-15 | Hydraulic telescopic reducing chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123159897.7U CN216341978U (en) | 2021-12-15 | 2021-12-15 | Hydraulic telescopic reducing chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216341978U true CN216341978U (en) | 2022-04-19 |
Family
ID=81164779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123159897.7U Active CN216341978U (en) | 2021-12-15 | 2021-12-15 | Hydraulic telescopic reducing chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216341978U (en) |
-
2021
- 2021-12-15 CN CN202123159897.7U patent/CN216341978U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221103 Address after: 048000 Jinjiang Industrial Park, Jinding Road, Jincheng Economic and Technological Development Zone, Jincheng City, Shanxi Province Patentee after: Jinneng Holding Equipment Manufacturing Group Tianhe Zhongbang Shanxi Energy Technology Co.,Ltd. Address before: 100070 Fengtai District Haiying Road, No. 5, room 5, room 511, Beijing Patentee before: CORTECH DRILLING EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |