Slip clamping head of power head

Abstract

The utility model discloses a slip clamping head of a power head, which belongs to a clamping device in the technical field of geological exploration equipment, and adopts the technical scheme that the slip clamping head comprises a main body cylinder used for clamping, dismounting and mounting a rod piece, and one end of the main body cylinder is detachably connected with the power head; the slip clamping end head is arranged at the other end, connected with the power head, of the main body cylinder; the slip clamping end comprises a hydraulic pressure relief sleeve, a slip driving sleeve and a nitrogen spring set, the hydraulic pressure relief sleeve is arranged outside the main body barrel in a sleeving mode, the slip driving sleeve abuts against the movable end of the hydraulic pressure relief sleeve, the nitrogen spring set is arranged on the main body barrel in a sleeving mode, and the movable end of the nitrogen spring set is fixedly connected with the other end of the slip driving sleeve; according to the slip clamping head of the power head provided by the utility model, the slip driving sleeve drives the plurality of slips on the main body cylinder to realize clamping and loosening operation in the main body cylinder, so that stable clamping and convenient disassembly of external parts needing to be clamped are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of geological prospecting equipment, and in particular relates to a slip clamping head of a power head. Background Art

[0002] The drilling rig power head in geological exploration equipment mainly includes two functional components, one is the speed reduction component, which is used to drive the main shaft to rotate, and the other is the oil distribution component, which clamps or loosens the drill pipe through the movement of the slips. At present, the full hydraulic drilling rig power head mainly includes two functional components: one is the speed reduction component, which is composed of a gear set and a main shaft, and its function is to transfer the torque of the hydraulic motor to the main shaft through the speed reduction and rotation speed of the gear set; the other is the oil distribution component, which is composed of an oil inlet joint, an oil distribution sleeve, a main shaft and a chuck component. The hydraulic oil enters the chuck component through the oil inlet joint, the oil distribution sleeve and the main shaft to drive the opening and closing of the chuck, thereby achieving the clamping and loosening of the drill pipe.

[0003] The slip clamping head of the power head in the prior art has the problem of insufficient clamping force and insufficient clamping stability, and is also not convenient for clamping and installing the drill bit. Utility Model Content

[0004] The utility model aims to provide a slip clamping head of a power head, wherein a detachably connected slip clamping head is arranged at one end of the power head, and the slip clamping head is provided with a slip driving sleeve and a nitrogen spring group, the nitrogen spring group and the hydraulic relief sleeve control the sliding of the slip driving sleeve on the main body tube, so that the slip driving sleeve drives multiple slips on the main body tube to realize clamping and releasing operations in the main body tube, and the linkage cooperation between the multiple slip groups improves the stable clamping and convenient disassembly of external parts that need to be clamped.

[0005] The utility model aims to achieve the purpose of a slip clamping head of a power head, comprising

[0006] The main body tube is used for clamping and disassembling and installing the rod, and one end of the main body tube is detachably connected to the power head;

[0007] A slip clamping end, the slip clamping end being arranged at the other end where the main body tube is connected to the power head; and

[0008] The slip clamping end head comprises a hydraulic relief sleeve sleeved on the outside of the main body tube, and a slip driving sleeve abutting against the movable end of the hydraulic relief sleeve, the main body tube is evenly provided with a plurality of slip movable grooves in the circumferential direction, slips are arranged in the slip movable grooves, and the slips and the slip driving sleeve are abutted against each other through an inclined surface;

[0009] A nitrogen spring group is sleeved on the main body tube, and the movable end of the nitrogen spring group is fixedly connected to the other end of the slip drive sleeve.

[0010] Furthermore, the plurality of slips are provided with a clamping plane close to the central axis of the main body tube and a force-bearing inclined surface away from the central axis of the main body tube, and the clamping planes of the plurality of slips form a clamping area.

[0011] Furthermore, the clamping plane is provided with a clamping groove in the width direction, and the inner wall of the main body tube is provided with a plurality of connecting clamping grooves, and the plurality of clamping grooves and the plurality of connecting clamping grooves are alternately arranged to form a clamping groove ring.

[0012] Furthermore, a plurality of slip driving grooves are evenly distributed inside the slip driving sleeve, and the groove bottoms of the slip driving grooves are inclined grooves adapted to the outer side surfaces of the slips.

[0013] Furthermore, the nitrogen spring group includes a mounting ring and a plurality of nitrogen springs. The mounting ring is fixedly mounted on the main body tube. One end of the mounting ring is abutted against a limiting step arranged at the end of the main body tube. The other end of the mounting ring is provided with a nitrogen spring mounting groove.

[0014] Furthermore, one ends of the plurality of nitrogen springs are fixedly disposed in the nitrogen spring mounting groove, and the central axes of the plurality of nitrogen springs are disposed parallel to the central axis of the main body tube and are distributed in a circular array.

[0015] Furthermore, one end of the slip drive sleeve close to the mounting collar is adapted to the nitrogen spring mounting groove and movably connected in the nitrogen spring mounting groove.

[0016] Furthermore, the hydraulic drain sleeve comprises a hydraulic sleeve main body and a hydraulic sleeve auxiliary body, and the end faces of the hydraulic sleeve main body and the hydraulic sleeve auxiliary body are provided with staggered movable limiting ring grooves, and one end of the hydraulic sleeve auxiliary body close to the cava drive sleeve is fixedly arranged with the cava drive sleeve.

[0017] Furthermore, nine slips are evenly distributed on the main body tube in the circumferential direction, and nine nitrogen springs are evenly distributed and fixedly arranged in corresponding nitrogen spring installation grooves.

[0018] The beneficial effects of the utility model are embodied in:

[0019] 1. In the utility model, by setting a main body tube, the corresponding cava clamping end head is movably installed, and the cava clamping head and the external power head are relatively fixedly installed to realize the clamping and disassembly installation of the external rod. More specifically, the cava clamping end head is provided with a hydraulic relief sleeve, a cava driving sleeve and a nitrogen spring group. The hydraulic relief sleeve and the nitrogen spring drive the cava driving sleeve on the main body tube, so that the cava driving sleeve controls the multiple cava on the main body tube to telescope and clamp at the position of the main body tube toward the axis, and then with the cooperation of the multiple cava, the clamping and disassembly of the external rod is realized, and the stability of the clamping and the convenience of disassembly are improved; and, due to the provision of the nitrogen spring group, through the multiple nitrogen springs and the multiple cava, the clamping force of the rod to be clamped is more stable and controllable.

[0020] 2. In the utility model, since the cava is movably arranged in the corresponding cava movable groove on the main body tube, the cava has the freedom of movement in the direction of the central axis of the main body tube, and then the force-bearing inclined surface of the cava away from the central axis of the main body tube is realized under the force of the cava driving sliding drive to realize the clamping plane of the cava to gather in the direction of the central axis of the main body tube, thereby realizing the clamping function.

[0021] 3. In the utility model, a plurality of cava driving grooves are evenly distributed inside the cava driving sleeve, and the bottom of the cava driving groove is an inclined groove adapted to the outer side surface of the cava, and the corresponding cava with a force-bearing inclined surface matches the force-bearing inclined surface with the inclined groove. Thus, the force on the force-bearing inclined surface of the cava is realized by the sliding of the cava driving sleeve on the main tube, so that the cava can be telescopically movable in the cava movable groove of the main tube. Furthermore, under such action on multiple cava, multiple cava can be gathered and clamped in the main tube, and the cooperation between the multiple cava improves the clamping stability of the entire clamping head.

[0022] 4. In the utility model, a mounting collar is provided in the nitrogen spring group, and the mounting collar is fixedly sleeved on the main body tube and is arranged against the limiting step provided at the end of the main body tube, so that the mounting collar can be stably arranged on the main body tube, thereby realizing stable positioning and installation of the nitrogen spring; at the same time, since a nitrogen spring mounting groove is provided at the other end of the mounting collar, the end of the nitrogen spring can be embedded and clamped on the disc end surface of the mounting collar, thereby enhancing the stability of the nitrogen spring fixedly installed on the mounting collar, and then multiple nitrogen springs are provided and the central axis is arranged parallel to the central axis of the main body tube and distributed in a circular array, thereby realizing stable driving of the slip drive sleeve on the main body tube, so that the corresponding slip performs a stable clamping operation.

[0023] 5. In the utility model, a hydraulic sleeve main body and a hydraulic sleeve auxiliary body are provided in the hydraulic release sleeve, and the hydraulic sleeve main body is fixedly provided on the main body tube, and the hydraulic sleeve auxiliary body is provided on the main body tube, so that a relatively telescopic movable guide component is provided between the sleeve main body and the hydraulic sleeve auxiliary body, so that under hydraulic control, relative movement is generated between the hydraulic sleeve main body and the hydraulic sleeve auxiliary body, and the hydraulic sleeve auxiliary body is relatively fixedly connected to the cava driving sleeve, so that the sliding of the cava driving sleeve on the main body tube makes the cava move to the outside of the main body tube, thereby realizing the loosening operation of the clamped rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0025] Figure 1 This is a schematic diagram of the internal structure of the slip clamping head of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the nitrogen spring assembly of the utility model;

[0027] Figure 3 It is a schematic diagram of the overall structure of the power head of the utility model.

[0028] In the accompanying drawings, 1-main cylinder, 2-rod, 3-power head, 4-claw clamping end, 5-hydraulic relief sleeve, 6-claw drive sleeve, 7-claw movable groove, 8-claw, 9-nitrogen spring group, 10-clamping plane, 11-force inclined surface, 12-clamping area, 13-slot, 14-connecting slot, 15-slot ring, 16-claw drive slot, 17-inclined slot, 18-installing ring, 19-nitrogen spring, 20-limiting step, 21-hydraulic sleeve main body, 22-hydraulic sleeve auxiliary body, 23-active limiting ring groove, 24-nitrogen spring installation groove. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0030] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0031] Reference Figure 1 and Figure 2, a slip clamping head of a power head, comprising

[0032] The main body tube 1 is used for clamping and disassembling the rod 2, and one end of the main body tube 1 is detachably connected to the power head 3;

[0033] A slip clamping end 4, wherein the slip clamping end 4 is arranged at the other end where the main body tube 1 is connected to the power head 3; and

[0034] The slip clamping end 4 comprises a hydraulic relief sleeve 5 sleeved on the outside of the main body tube 1, and a slip driving sleeve 6 abutting against the movable end of the hydraulic relief sleeve 5. The main body tube 1 is evenly provided with a plurality of slip movable grooves 7 in the circumferential direction. Slips 8 are arranged in the slip movable grooves 7. The slips 8 and the slip driving sleeve 6 are abutted against each other through an inclined surface.

[0035] A nitrogen spring group 9 is sleeved on the main body tube 1 , and a movable end of the nitrogen spring group 9 is fixedly connected to the other end of the slip drive sleeve 6 .

[0036] Combination Figure 1 and Figure 2 By setting the main body tube 1, the corresponding cava clamping end head 4 is movably installed, and the cava 8 clamping head is relatively fixedly installed with the external power head 3 to realize the clamping and disassembly installation of the external rod 2. More specifically, the cava clamping end head 4 is provided with a hydraulic relief sleeve 5, a cava driving sleeve 6 and a nitrogen spring group 9. The hydraulic relief sleeve 5 and the nitrogen spring 19 drive the cava driving sleeve 6 on the main body tube 1, so that the cava driving sleeve 6 controls the multiple cava 8 on the main body tube 1 to telescope and clamp at the position of the main body tube 1 toward the axis, and then with the cooperation of the multiple cava 8, the clamping and disassembly of the external rod 2 is realized, and the clamping stability and the convenience of disassembly are improved; and, due to the setting of the nitrogen spring group 9, through the multiple nitrogen springs 19 and the multiple cava 8, the clamping force of the rod 2 to be clamped is more stable and controllable.

[0037] Preferably, the plurality of slips 8 are provided with a clamping plane 10 close to the central axis of the main tube 1 and a force-bearing inclined surface 11 away from the central axis of the main tube 1 , and the clamping planes of the plurality of slips 8 form a clamping area 12 .

[0038] It can be understood that since the cava 8 is movably arranged in the corresponding cava movable groove 7 on the main tube 1, the cava 8 has the freedom of movement in the direction of the central axis of the main tube 1, and then the force-bearing inclined surface 11 of the cava 8 away from the central axis of the main tube 1 is realized under the force of the sliding drive of the cava 8 to realize the clamping plane 10 of the cava 8 to gather toward the direction of the central axis of the main tube 1, thereby realizing the clamping function.

[0039] Preferably, the clamping plane 10 is provided with a card slot 13 in the width direction, and the inner wall of the main body tube 1 is provided with a plurality of connecting card slots 14 , and the plurality of card slots 13 and the plurality of connecting card slots 14 are alternately arranged to form a card slot ring 15 .

[0040] Preferably, a plurality of slip driving grooves 16 are evenly distributed inside the slip driving sleeve 6 , and the groove bottoms of the slip driving grooves 16 are inclined grooves 17 adapted to the outer side surfaces of the slips 8 .

[0041] By evenly distributing a plurality of cava driving grooves 16 inside the cava driving sleeve 6, and making the bottom of the cava driving groove 16 an inclined groove 17 adapted to the outer side surface of the cava 8, and the corresponding cava 8 having a force-bearing inclined surface 11 matches the force-bearing inclined surface 11 with the inclined groove 17, thereby, the force on the force-bearing inclined surface 11 of the cava 8 is realized through the sliding of the cava driving sleeve 6 on the main tube 1, so that the cava 8 can be telescopically movable in the cava movable groove 7 of the main tube 1; and then, under such action on the plurality of cava 8, the plurality of cava 8 can be gathered and clamped in the main tube 1, and the cooperation between the plurality of cava 8 improves the clamping stability of the entire clamping head.

[0042] Preferably, the nitrogen spring group 9 includes a mounting ring 18 and a plurality of nitrogen springs 19, wherein the mounting ring 18 is fixedly mounted on the main body tube 1, one end of the mounting ring 18 is abutted against a limiting step 20 provided at the end of the main body tube 1, and the other end of the mounting ring 18 is provided with a nitrogen spring mounting groove 24; one ends of the plurality of nitrogen springs 19 are fixedly arranged in the nitrogen spring mounting groove 24, and the central axes of the plurality of nitrogen springs 19 are arranged parallel to the central axis of the main body tube 1 and distributed in a circular array.

[0043] It can be understood that by providing a mounting collar 18 in the nitrogen spring group 9, and making the mounting collar 18 fixedly sleeved on the main body tube 1 and abutting against the limiting step 20 provided at the end of the main body tube 1, the mounting collar 18 can be firmly set on the main body tube 1, thereby realizing stable positioning and installation of the nitrogen spring 19; at the same time, since a nitrogen spring 19 mounting groove is provided at the other end of the mounting collar 18, the end of the nitrogen spring 19 can be embedded and clamped on the disc end surface of the mounting collar 18, thereby enhancing the stability of the fixed installation of the nitrogen spring 19 on the mounting collar 18, and then arranging a plurality of nitrogen springs 19 and making the central axis parallel to the central axis of the main body tube 1 and distributed in a circular array, thereby realizing stable driving of the cava drive sleeve 6 on the main body tube 1, so that the corresponding cava 8 can be clamped stably.

[0044] Preferably, one end of the slip drive sleeve 6 close to the mounting collar 18 is adapted to the nitrogen spring mounting groove 24 and movably connected in the nitrogen spring mounting groove 24 .

[0045] Preferably, the hydraulic drain sleeve 5 includes a hydraulic sleeve main body 21 and a hydraulic sleeve auxiliary body 22, and the end faces of the hydraulic sleeve main body 21 and the hydraulic sleeve auxiliary body 22 are close to each other and are provided with staggered movable limiting ring grooves 23. The end of the hydraulic sleeve auxiliary body 22 close to the cava drive sleeve 6 is fixedly arranged with the cava drive sleeve 6.

[0046] Since a hydraulic sleeve main body 21 and a hydraulic sleeve auxiliary body 22 are provided in the hydraulic relief sleeve 5, and the hydraulic sleeve main body 21 is fixedly provided on the main body tube 1, and the hydraulic sleeve auxiliary body 22 is provided on the main body tube 1, a relatively telescopic movable guide component is provided between the sleeve main body and the hydraulic sleeve auxiliary body 22, so that under hydraulic control, relative movement is generated between the hydraulic sleeve main body 21 and the hydraulic sleeve auxiliary body 22, and the hydraulic sleeve auxiliary body 22 is relatively fixedly connected to the cava driving sleeve 6, so that the sliding of the cava driving sleeve 6 on the main body tube 1 makes the cava 8 move to the outside of the main body tube 1, thereby realizing the loosening operation of the clamped rod 2.

[0047] Preferably, nine slips 8 are evenly distributed in the circumferential direction of the main body tube 1 , and nine nitrogen springs 19 are evenly distributed and fixedly disposed in corresponding nitrogen spring installation grooves 24 .

[0048] The working principle and working process of this utility model:

[0049] When in use, a cava clamping head of a power head provided in the utility model is provided with a main body tube 1, and a corresponding cava clamping end head 4 is movably installed, and the cava 8 clamping head is relatively fixedly installed with the external power head 3, so as to realize the clamping and disassembly installation of the external rod 2. More specifically, a hydraulic relief sleeve 5, a cava driving sleeve 6 and a nitrogen spring group 9 are provided in the cava clamping end head 4, and the hydraulic relief sleeve 5 and the nitrogen spring 19 are used to drive the cava driving sleeve 6 on the main body tube 1, so that the cava driving sleeve 6 controls the multiple cava 8 on the main body tube 1 to perform telescopic clamping at the position of the main body tube 1 toward the axis center, and then with the cooperation of the multiple cava 8, the clamping and disassembly of the external rod 2 is realized, and the clamping stability and the convenience of disassembly are improved; and, due to the provision of the nitrogen spring group 9, through the multiple nitrogen springs 19 and the multiple cava 8, the clamping force of the rod 2 to be clamped is more stable and controllable.

[0050] Furthermore, by evenly distributing a plurality of cava driving grooves 16 inside the cava driving sleeve 6, and making the bottom of the cava driving groove 16 an inclined groove 17 adapted to the outer side surface of the cava 8, and the corresponding cava 8 having a force-bearing inclined surface 11 matches the force-bearing inclined surface 11 with the inclined groove 17, thereby, the force on the force-bearing inclined surface 11 of the cava 8 is realized through the sliding of the cava driving sleeve 6 on the main tube 1, so that the cava 8 can be telescoped in the cava movable groove 7 of the main tube 1, and then, under such action on multiple cava 8, multiple cava 8 can be gathered and clamped in the main tube 1, and the cooperation between the multiple cava 8 improves the clamping stability of the entire clamping head.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A slip clamping head of a power head, characterized in that: include The main body tube (1) is used for clamping, disassembling and installing the rod (2), and one end of the main body tube (1) is detachably connected to the power head (3); A slip clamping end head (4), the slip clamping end head (4) being arranged at the other end where the main body tube (1) is connected to the power head (3); and The slip clamping end head (4) comprises a hydraulic relief sleeve (5) sleeved on the outside of the main body tube (1), and a slip driving sleeve (6) abutting against the movable end of the hydraulic relief sleeve (5); the main body tube (1) is provided with a plurality of slip movable grooves (7) evenly distributed in the circumferential direction; slips (8) are arranged in the slip movable grooves (7); and the slips (8) and the slip driving sleeve (6) are abutted against each other via an inclined surface. A nitrogen spring group (9) is sleeved on the main body tube (1), and a movable end of the nitrogen spring group (9) is fixedly connected to the other end of the slip drive sleeve (6).

2. The slip clamping head of the power head according to claim 1, characterized in that: The plurality of slips (8) are provided with a clamping plane (10) close to the central axis of the main body tube (1) and a force-bearing inclined surface (11) away from the central axis of the main body tube (1), and the clamping planes of the plurality of slips (8) form a clamping area (12).

3. The slip clamping head of the power head as claimed in claim 2, characterized in that: A plurality of slip drive grooves (16) are evenly distributed inside the slip drive sleeve (6), and the groove bottom of the slip drive groove (16) is an inclined groove (17) adapted to the outer side surface of the slip (8).

4. The slip clamping head of the power head according to claim 1, characterized in that: The nitrogen spring assembly (9) comprises a mounting collar (18) and a plurality of nitrogen springs (19); the mounting collar (18) is fixedly sleeved on the main body tube (1); one end of the mounting collar (18) is abutted against a limiting step (20) provided at the end of the main body tube (1); and the other end of the mounting collar (18) is provided with a nitrogen spring mounting groove (24).

5. The slip clamping head of the power head as claimed in claim 4, characterized in that: One ends of the plurality of nitrogen springs (19) are fixedly arranged in the nitrogen spring installation groove (24), and the central axes of the plurality of nitrogen springs (19) are arranged parallel to the central axis of the main body tube (1) and are distributed in a circular array.

6. The slip clamping head of the power head as claimed in claim 5, characterized in that: One end of the slip drive sleeve (6) close to the mounting collar (18) is matched with the nitrogen spring mounting groove (24) and is movably connected in the nitrogen spring mounting groove (24).

7. The slip clamping head of the power head according to claim 1, characterized in that: The hydraulic pressure relief sleeve (5) comprises a hydraulic sleeve main body (21) and a hydraulic sleeve auxiliary body (22); the end surfaces of the hydraulic sleeve main body (21) and the hydraulic sleeve auxiliary body (22) close to each other are provided with staggered movable limiting ring grooves (23); and one end of the hydraulic sleeve auxiliary body (22) close to the cava drive sleeve (6) is fixedly arranged with the cava drive sleeve (6).

8. The slip clamping head of the power head as claimed in claim 5, characterized in that: Nine slips (8) are evenly distributed in the circumferential direction of the main body tube (1), and nine nitrogen springs (19) are evenly distributed and fixedly arranged in corresponding nitrogen spring installation grooves (24).

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