A drilling tool ball spring clamp structure

Abstract

The utility model discloses a drilling tool ball spring-cage structure, which relates to the field of geological prospecting technology, and comprises a shell and a vertical rack, wherein a lifting column is fixed to the inner surface of the shell, and a positioning clamp is arranged at the groove of the lifting column, a clamp rod is arranged outside the positioning clamp, and an inclined groove is arranged in the middle of the clamp rod, the vertical rack is arranged at the bottom of the lifting column, and a fixing pin is penetrated at the opening of the surface of the vertical rack, a gear is connected to the outer side of the vertical rack, and a transmission shaft is penetrated in the middle of the gear, and a transverse rack is connected to the top of the gear. In the drilling tool ball spring-cage structure, after the inner tube assembly is inserted between the limit pieces, the transverse rack and the clamp rod are displaced transversely due to the elastic force recovery effect of the spring, and the gear transmission is driven by the transverse rack to make the vertical rack displace longitudinally, and the limit piece is fixed at a specified position by the clamp rod and the positioning clamp, so as to prevent the inner tube assembly from falling off due to the mutual force generated during the lifting process.

Description

Technical Field

[0001] The utility model relates to the technical field of geological exploration, in particular to a drilling tool ball spring clamp structure. Background Art

[0002] As the depth of geological exploration construction continues to deepen, the drilling technology of complex strata is getting higher and higher. Construction on hard and slippery strata is an urgent problem that needs to be solved. Therefore, the rope impact drilling process is increasingly widely used. This process is a construction technology that combines rope coring drilling technology with hydraulic impact drilling technology. Through the impact rotary drilling principle, the hard strata are broken into particles or powder before drilling and coring. Among them, the spring clamp structure is an important part of the coring drill. When coring is required, the spring clamp caliper is forced to contract, so that the inner tube assembly is separated from the outer tube assembly, thereby lifting the inner tube up.

[0003] Since the spring is elastic, when the drill ball spring structure and the outer tube assembly generate a force on each other, it is easy to affect the locking effect on the inner tube assembly.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a drilling tool ball spring card structure is proposed. Utility Model Content

[0005] The utility model aims to provide a drilling tool ball spring clamp structure to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drilling tool ball spring card structure, comprising a shell and a vertical rack, a lifting column is fixed to the inner surface of the shell, and a positioning card is arranged at the groove of the lifting column, a clamping rod is arranged on the outside of the positioning card, and an inclined groove is opened in the middle of the clamping rod, the vertical rack is arranged at the bottom of the lifting column, and a fixing pin is passed through the opening of the surface of the vertical rack, a gear is connected to the outer side of the vertical rack, and a transmission shaft is passed through the middle of the gear, a transverse rack is connected to the top of the gear, and through grooves are opened on both sides of the shell.

[0007] Furthermore, a slide groove is provided on the inner bottom surface of the shell, and a limit assembly is provided in the slide groove, and the fixing pin is fixedly connected to the shell.

[0008] Furthermore, the limiting assembly includes a guide rod and a limiting member, and the limiting member is sleeved on the outside of the guide rod.

[0009] Furthermore, the limiting component also includes a ball and a spring, and a ball is arranged in the ball groove at the bottom of the limiting member, and a spring is arranged on the side of the limiting member away from the vertical center axis of the shell.

[0010] Furthermore, the limiting member is elastically connected to the housing via a spring, and four slide slots and four limiting components are provided.

[0011] Furthermore, the transverse rack and the clamping rod are parallel to each other, and the transverse rack and the vertical rack are perpendicular to each other.

[0012] Furthermore, the lifting column and the clamping rod are perpendicular to each other, and the transverse rack and the clamping rod are both fixedly connected to the limiting member.

[0013] The utility model provides a drilling tool ball spring clamp structure, which has the following beneficial effects:

[0014] 1. After the inner tube assembly of the utility model is inserted between the limit pieces, the elastic force recovery effect of the spring causes the transverse rack and the clamping rod to be laterally displaced, and the transverse rack drives the gear transmission to cause the vertical rack to be longitudinally displaced. The clamping rod and the positioning clamp are engaged to fix the limit piece at a specified position to prevent the inner tube assembly from falling off due to the mutual force generated during the lifting process.

[0015] 2. Due to the guidance of the guide rod and the elastic restoring effect of the spring, the limiter will drive the ball to slide in opposite directions along the slide groove until the inner tube assembly is clamped, so that the inner tube assembly and the housing are kept on the same central axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of a shell of a drilling tool ball spring clamp structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the top view of the shell structure of a drilling tool ball spring clamp structure of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of a lifting column and a positioning clamp of a drilling tool ball spring clamp structure.

[0019] In the figure: 1. shell; 2. slide groove; 3. limit assembly; 301. guide rod; 302. limit member; 303. ball; 304. spring; 4. horizontal rack; 5. gear; 6. transmission shaft; 7. vertical rack; 8. fixing pin; 9. lifting column; 10. positioning clamp; 11. clamp rod; 12. inclined groove; 13. through groove. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figure 1 and Figure 3As shown, a drilling tool ball spring clamp structure includes a shell 1 and a vertical rack 7, a lifting column 9 is fixed to the inner surface of the shell 1, and a positioning clamp 10 is arranged at the groove of the lifting column 9, a clamp rod 11 is arranged outside the positioning clamp 10, and an inclined groove 12 is opened in the middle of the clamp rod 11, the vertical rack 7 is arranged at the bottom of the lifting column 9, and a fixing pin 8 is penetrated at the opening of the surface of the vertical rack 7, a gear 5 is connected to the outer side of the vertical rack 7, and a transmission shaft 6 is penetrated in the middle of the gear 5, a transverse rack 4 is connected to the top of the gear 5, through grooves 13 are opened on both sides of the shell 1, the transverse rack 4 and the clamp rod 11 are parallel to each other, and the transverse rack 4 and the vertical rack 7 are perpendicular to each other, the lifting column 9 and the clamp rod 11 are perpendicular to each other, and the transverse rack 4 and the clamp rod 11 are fixedly connected to the limit member 302.

[0022] The specific operation is as follows: after the inner tube assembly is inserted between the limit members 302, the elastic force recovery effect of the spring 304 causes the transverse rack 4 and the clamping rod 11 to be laterally displaced, and the transverse rack 4 drives the gear 5 to transmit the vertical rack 7 to be longitudinally displaced, and the clamping rod 11 is engaged with the positioning clamp 10 to fix the limit member 302 in the specified position to prevent the inner tube assembly from falling off due to the mutual force generated during the lifting process.

[0023] like Figure 1 and Figure 2 As shown, a slide groove 2 is provided on the inner bottom surface of the shell 1, and a limit assembly 3 is provided in the slide groove 2, the fixing pin 8 is fixedly connected to the shell 1, the limit assembly 3 includes a guide rod 301 and a limit member 302, and the outer sleeve of the guide rod 301 is provided with a limit member 302, the limit assembly 3 also includes a ball 303 and a spring 304, and the ball 303 is provided in the ball groove at the bottom of the limit member 302, and a spring 304 is provided on the side of the limit member 302 away from the vertical center axis of the shell 1, the limit member 302 is elastically connected to the shell 1 through the spring 304, and the slide groove 2 and the limit assembly 3 are each provided with four.

[0024] The specific operation is as follows: due to the guidance of the guide rod 301 and the elastic recovery effect of the spring 304, the limit member 302 will drive the ball 303 to slide in the opposite direction along the slide groove 2 until the inner tube assembly is clamped so that the inner tube assembly and the shell 1 remain on the same central axis.

[0025] In summary, when the drilling tool ball spring clamp structure is used, the housing 1 is first placed into the drill rod, and then the housing 1 is pushed to make the inner tube assembly extend between the limit members 302. Due to the structural characteristics of the inner tube assembly, during the process of the inner tube assembly extending between the limit members 302, the limit members 302 are first squeezed to drive the ball 303 to slide in opposite directions along the slide groove 2. Later, due to the guidance of the guide rod 301 and the elastic recovery effect of the spring 304, the limit members 302 will drive the ball 303 to slide in opposite directions along the slide groove 2, thereby clamping the inner tube assembly, so that the inner tube assembly and the housing 1 are kept on the same central axis.

[0026] When the four limiting members 302 are displaced in opposite directions, the transverse rack 4 will drive the gear 5 and the transmission shaft 6 to rotate, and the gear 5 will drive the vertical rack 7 to make a longitudinal displacement along the outside of the fixing pin 8, which can cause the positioning clamp 10 to slide in the middle inclined groove 12 of the clamp rod 11. Therefore, when the limiting member 302 is in close contact with the inner tube assembly, the positioning clamp 10 on the clamp rod 11 and the lifting column 9 are engaged with each other to fix the limiting member 302 in a specified position, thereby preventing the locking effect of the inner tube assembly from being affected by the mutual force generated by the shell 1 and the outer tube assembly during the lifting process, thereby improving the stability of the connection between the structure and the inner tube assembly and the convenience of actual operation.

[0027] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A drilling tool ball spring structure, comprising a housing (1) and a vertical rack (7), characterized in that: A lifting column (9) is fixed on the inner surface of the housing (1), and a positioning clamp (10) is arranged at the groove of the lifting column (9), a clamp rod (11) is arranged outside the positioning clamp (10), and an inclined groove (12) is opened in the middle of the clamp rod (11), the vertical rack (7) is arranged at the bottom of the lifting column (9), and a fixing pin (8) is passed through the opening of the surface of the vertical rack (7), the outer side of the vertical rack (7) is connected to a gear (5), and a transmission shaft (6) is passed through the middle of the gear (5), the top of the gear (5) is connected to a transverse rack (4), and through grooves (13) are opened on both sides of the housing (1).

2. A drilling tool ball spring structure according to claim 1, characterized in that: The inner bottom surface of the housing (1) is provided with a slide groove (2), and a limit assembly (3) is provided in the slide groove (2), and the fixing pin (8) is fixedly connected to the housing (1).

3. A drilling tool ball spring structure according to claim 2, characterized in that: The limiting assembly (3) comprises a guide rod (301) and a limiting member (302), and the limiting member (302) is sleeved on the outside of the guide rod (301).

4. A drilling tool ball spring structure according to claim 3, characterized in that: The limiting component (3) further comprises a ball (303) and a spring (304), and the ball (303) is arranged in the ball groove at the bottom of the limiting member (302), and the spring (304) is arranged on the side of the limiting member (302) away from the vertical center axis of the shell (1).

5. A drilling tool ball spring structure according to claim 4, characterized in that: The limiting member (302) is elastically connected to the housing (1) via a spring (304), and four slide slots (2) and four limiting components (3) are provided respectively.

6. The drilling tool ball spring clamp structure according to claim 1, characterized in that: The transverse rack (4) and the clamping rod (11) are parallel to each other, and the transverse rack (4) and the vertical rack (7) are perpendicular to each other.

7. The drilling tool ball spring structure according to claim 3, characterized in that: The lifting column (9) and the clamping rod (11) are perpendicular to each other, and the transverse rack (4) and the clamping rod (11) are both fixedly connected to the limiting member (302).

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