CN220815579U - Drill rod clamping device of core drilling machine - Google Patents

Abstract

The application provides a drill rod clamping device of a core drilling machine, which comprises a bottom plate, an accommodating block, a clamping assembly and a hydraulic motor, wherein two lug plates are arranged at two ends of the bottom plate, the accommodating block is provided with an accommodating hole, an avoiding hole and a guide hole, the accommodating hole is separated from the avoiding hole, the guide hole penetrates through the accommodating hole and is used for clamping the assembly and comprises a bidirectional screw rod, a first bracket, a second bracket and two slips, the bidirectional screw rod penetrates through the avoiding hole and is rotationally connected to the two lug plates, the first bracket comprises a first vertical plate and a first transverse plate, the first vertical plate is in threaded connection with a left-hand thread section of the bidirectional screw rod, the second bracket comprises a second vertical plate and a second transverse plate, the second vertical plate is in threaded connection with a right-hand thread section of the bidirectional screw rod, the two slips are symmetrically arranged on the first transverse plate and the second transverse plate, the openings of the two slips are opposite, and the hydraulic motor is in transmission connection with the bidirectional screw rod. The application realizes the symmetrical clamping of the two slips to the drill rod, the clamping is reliable, the possibility of slipping of the drill rod is reduced, the symmetrical clamping can also avoid the distortion of the drill rod, and the use effect is good.

Description

Drill rod clamping device of core drilling machine

Technical Field

The application relates to the technical field of core drills, in particular to a drill rod clamping device of a core drill.

Background

The core drilling machine is drilling equipment suitable for working conditions such as geological exploration and rock mass drilling, and has the characteristics of modularized design, easy disassembly and assembly, high drilling efficiency, convenience in transportation, low cost, environmental protection and the like. When the core drilling machine is used, the drill rod is clamped by the clamp holder or the clamping device, so that the clamping and the loosening of the drill rod are realized.

At present, the clamping device mainly comprises an elastic clamping device and a normally closed clamping device, wherein the normally closed clamping device drives slips through springs, and the slips clamp a drill rod, so that the drill rod is clamped.

However, after a period of use, the spring is easy to decline in elasticity, so that the clamping force of the slips on the drill rod is reduced, and the risk of slipping of the drill rod is high. In addition, if the deformation amounts of the springs at the two sides of the drill rod are inconsistent, the acting forces of the two slips on the drill rod may be inconsistent, and the drill rod may be skewed.

Disclosure of utility model

The application provides a drill rod clamping device of a core drilling machine, which can realize that two slips symmetrically clamp a drill rod, is reliable in clamping, reduces the possibility of slipping of the drill rod, can avoid the drill rod from being skewed in symmetrical clamping, and has a good use effect.

In order to solve the technical problems, the application adopts the following technical scheme:

The utility model provides a core drill drilling rod clamping device, includes bottom plate, holds piece, clamping assembly and hydraulic motor, bottom plate length direction's both ends are equipped with two otic placodes, hold the piece set up in on the bottom plate, hold the piece be equipped with along hold the hole that the width direction of bottom plate extends and follow dodge hole and guiding hole that the length direction of bottom plate extends, hold the hole with dodge hole phase separation, the guiding hole runs through hold the hole just the central line of guiding hole with the central line of holding the hole intersects, clamping assembly includes two-way lead screw, first support, second support and two slips, two-way lead screw passes dodge the hole rotation connect in two on the otic placodes, first support includes perpendicular first riser and the first diaphragm of connection, first diaphragm sliding connection in the guiding hole, the second support includes perpendicular second riser and the second diaphragm of connection, second riser connection in the second riser right side symmetry with two-hand thread connection in the second support right side symmetry lead screw and two-way connection in the second support right-hand thread section sets up in two-way screw thread connection with two-way motor.

When the hydraulic motor is started, the bidirectional screw rod can be driven to rotate, the first support and the second support are driven to be close to or far away from each other, and accordingly the two slips are driven to be close to or far away from each other, and clamping or loosening of the slips on the drill rod is achieved. In the process, the first bracket and the second bracket are always symmetrical relative to the central plane of the bottom plate, namely, the two slips are always symmetrical relative to the central plane of the bottom plate, so that the acting force of the two slips on the drill rod is basically consistent, and the situation that the drill rod is askew is avoided.

Compared with the prior art, the drill rod clamping device of the core drilling machine can realize that two slips symmetrically clamp the drill rod, is reliable in clamping, reduces the possibility of slipping of the drill rod, and meanwhile, can avoid the drill rod from being skewed in symmetrical clamping, and is good in using effect.

In one embodiment of the present application, the guide hole is provided with a guide rib along the length direction thereof, the first transverse plate is provided with a guide groove along the length direction thereof, and the guide rib is matched with the guide groove; or alternatively, the first and second heat exchangers may be,

The guide hole is provided with a guide groove along the length direction of the guide hole, the first transverse plate is provided with a guide rib along the length direction of the first transverse plate, and the guide rib is matched with the guide groove.

In an embodiment of the present application, rollers are disposed on two lateral walls of the first transverse plate in the width direction, and the rollers are abutted against two lateral walls of the guide hole in the width direction.

In one embodiment of the application, the slips are removably connected to the first cross plate.

In an embodiment of the application, the slip is provided with an inverted trapezoid clamping groove along the width direction, the first transverse plate is provided with an inverted trapezoid protrusion, and the inverted trapezoid protrusion is clamped in the inverted trapezoid clamping groove.

In an embodiment of the application, a first end of the inverted trapezoid clamping groove penetrates through the side wall of the slip, and a plug is arranged on the inverted trapezoid clamping groove to plug the inverted trapezoid clamping groove.

In one embodiment of the application, the gripping surface of the slip is provided with an anti-slip layer.

In one embodiment of the application, the anti-slip layer is made of rubber.

Drawings

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

FIG. 1 is a schematic perspective view of a drill rod clamping device of a core drill according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a rod clamping device for a core drill according to an embodiment of the present application;

FIG. 3 is a schematic perspective view of a receiving block for use in a core drill rod clamping apparatus according to one embodiment of the present application;

FIG. 4 is a schematic perspective view of a first bracket used in a drill rod clamping device of a core drill according to an embodiment of the present application;

fig. 5 is a schematic diagram of an assembly structure of a first cross plate and slips used in the drill pipe clamping device of the core drilling machine according to an embodiment of the present application.

Reference numerals:

100. A bottom plate; 110. ear plates; 200. a receiving block; 210. a receiving hole; 220. avoidance holes; 230. a guide hole; 231. a guide groove; 300. a clamping assembly; 310. a two-way screw rod; 311. a left-handed thread section; 312. a right-handed thread section; 320. a first bracket; 321. a first riser; 322. a first cross plate; 3221. a guide rib; 3222. a roller; 3223. inverted trapezoid bulges; 330. a second bracket; 331. a second riser; 332. a second cross plate; 340. a slip; 341. an inverted trapezoidal clamping groove; 400. a hydraulic motor.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are also within the scope of the application.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The following words are explained first:

The bidirectional screw rod is a screw rod with left-handed threads and right-handed threads at the same time, and can realize the relative movement of the two parts.

The hydraulic motor, also called an oil motor, is an actuator of a hydraulic system, and can convert hydraulic pressure energy provided by a hydraulic pump into mechanical energy (torque and rotation speed) of an output shaft thereof, and is mainly applied to the fields of injection molding machines, construction machines, mining machines, metallurgical machines, ship machines, harbor machines and the like.

Fig. 1 is a schematic perspective view of a drill rod clamping device of a core drilling machine according to an embodiment of the present application. Fig. 2 is a schematic cross-sectional view of a drill rod clamping device of a core drilling machine according to an embodiment of the present application. Fig. 3 is a schematic perspective view of a receiving block used in the rod clamping device of the core drilling machine according to an embodiment of the present application. Fig. 4 is a schematic perspective view of a first bracket used in the drill rod clamping device of the core drilling machine according to an embodiment of the present application. Fig. 5 is a schematic diagram of an assembly structure of a first cross plate and slips used in the drill pipe clamping device of the core drilling machine according to an embodiment of the present application.

An embodiment of the present application provides a drill rod clamping device of a core drilling machine, as shown in fig. 1 and 2, including a base plate 100, a receiving block 200, a clamping assembly 300 and a hydraulic motor 400, wherein the base plate 100 is a component for mounting the entire clamping device on the drilling machine, and is also a structure for supporting other components, the receiving block 200 is a structure for receiving a drill rod, and the clamping assembly 300 and the hydraulic motor 400 are used for clamping the drill rod.

As shown in fig. 1, two lugs 110 are provided at both ends of the base plate 100 in the length direction, which can provide a mounting base for the bidirectional screw 310. The bottom plate 100 is also provided with mounting holes, so that the bottom plate 100 can be conveniently fixed on a drilling machine, and the whole clamping device is mounted. When in installation, the central surface of the bottom plate 100 in the length direction is ensured to pass through the central line of the drill rod, so that the whole clamping device is aligned with the drill rod.

As shown in fig. 1, 2 and 3, the receiving block 200 is disposed on the base plate 100, and the receiving block 200 is provided with a receiving hole 210 extending in a width direction of the base plate 100 and a dodging hole 220 and a guide hole 230 extending in a length direction of the base plate 100, both the receiving hole 210 and the dodging hole 220 penetrating the receiving block 200, the receiving hole 210 and the dodging hole 220 being separated, that is, the receiving hole 210 and the dodging hole 220 having no overlapping portion, and both being disjoint.

As shown in fig. 2, the guide hole 230 penetrates the receiving hole 210, i.e., the guide hole 230 communicates with the receiving hole 210. The center line of the guide hole 230 intersects the center line of the receiving hole 210, i.e., the center of the guide hole 230 is on the same plane as the center of the receiving hole 210.

As shown in fig. 2, the gripping assembly 300 includes a bi-directional lead screw 310, a first bracket 320, a second bracket 330, and two slips 340, wherein the bi-directional lead screw 310 is a lead screw having a left-hand threaded section 311 and a right-hand threaded section 312, and the slips 340 are the components that grip the drill pipe.

As shown in fig. 2, the bi-directional screw 310 is rotatably coupled to the two ear plates 110 through the escape hole 220,

As shown in fig. 2, the first support 320 includes a first riser 321 and a first transverse plate 322 that are vertically connected, the first riser 321 is in threaded connection with the left-handed threaded section 311 of the bidirectional screw 310, the first transverse plate 322 is slidably connected in the guide hole 230, and when the bidirectional screw 310 rotates, the first support 320 can be driven to move by threaded engagement of the left-handed threaded section 311 and the first riser 321, and the first transverse plate 322 moves in the guide hole 230.

As shown in fig. 2, the second bracket 330 includes a second vertical plate 331 and a second transverse plate 332 that are vertically connected, the second vertical plate 331 is screwed to the right-handed thread section 312 of the bidirectional screw 310, the second transverse plate 332 is slidably connected in the guide hole 230, and the second bracket 330 can be driven to move by the screw fit of the right-handed thread section 312 and the second vertical plate 331, and the second transverse plate 332 moves in the guide hole 230. Also, the first and second holders 320 and 330 are relatively moved, i.e., the first holders 320 are moved toward or away from each other.

The first bracket 320 and the second bracket 330 are symmetrically disposed with respect to a center plane of the base plate 100, where the center plane refers to a center plane of the base plate 100 in a length direction, and a distance from the first bracket 320 to a center line of the drill pipe is equal to a distance from the second bracket 330 to the center line of the drill pipe.

As shown in fig. 2, two slips 340 are symmetrically disposed on the first transverse plate 322 and the second transverse plate 332, and the openings of the two slips 340 are opposite, and the two slips 340 move along with the first transverse plate 322 and the second transverse plate 332 respectively, so as to realize symmetrical movement.

The hydraulic motor 400 is in transmission connection with the bidirectional screw rod 310, and provides rotating power for the bidirectional screw rod 310, so that the bidirectional screw rod 310 is driven. Of course, the hydraulic motor 400 should be connected to a hydraulic system so that the hydraulic pump drives the hydraulic motor 400 to operate.

When the hydraulic motor 400 is started, the bidirectional screw rod 310 can be driven to rotate, and the first bracket 320 and the second bracket 330 are driven to be close to or far away from each other, so that the two slips 340 are driven to be close to or far away from each other, and clamping or loosening of the slips 340 on a drill rod is realized. In this process, the first support 320 and the second support 330 are always symmetrical with respect to the center plane of the bottom plate 100, that is, the two slips 340 are always symmetrical with respect to the center plane of the bottom plate 100, so that the acting forces of the two slips 340 on the drill rod are ensured to be substantially consistent, and the situation that the drill rod is askew is avoided.

Compared with the prior art, the drill rod clamping device of the core drilling machine can realize that two slips 340 symmetrically clamp the drill rod, is reliable in clamping, reduces the possibility of slipping of the drill rod, and meanwhile, the symmetrical clamping can also avoid the drill rod from being askew, so that the use effect is good.

In some embodiments, as shown in fig. 1, the guide hole 230 is provided with a guide rib 3221 along a length direction thereof, the first transverse plate 322 is provided with a guide groove 231 along a length direction thereof, the guide rib 3221 is matched with the guide groove 231, and positioning and guiding of the first transverse plate 322 are achieved through the matching of the ribs and grooves.

Similarly, the guide hole 230 is provided with a guide groove 231 along the length direction thereof, the first transverse plate 322 is provided with a guide rib 3221 along the length direction thereof, the guide rib 3221 is matched with the guide groove 231, that is, the positions of the guide groove 231 and the guide rib 3221 can be interchanged, and matching can be realized.

In some embodiments, as shown in fig. 4, rollers 3222 are disposed on two lateral walls of the first transverse plate 322 in the width direction, the rollers 3222 are abutted against two lateral walls of the guide hole 230 in the width direction, so that the lateral walls of the first transverse plate 322 are prevented from directly contacting with the lateral walls of the guide hole 230, and the roller 3222 contacts with the lateral walls, so that abrasion between the first transverse plate 322 and the guide hole 230 is reduced, the service life is prolonged, and meanwhile, the accuracy of movement is ensured.

In some embodiments, slips 340 are removably connected to first cross plate 322, which may be removed, thereby allowing a driller to replace slips 340 to grip drill pipe of different diameters and improve versatility of the overall gripping apparatus.

Specifically, in some embodiments, as shown in fig. 5, the slip 340 is provided with an inverted trapezoid clamping groove 341 along the width direction thereof, the first transverse plate 322 is provided with an inverted trapezoid protrusion 3223, the inverted trapezoid protrusion 3223 is clamped in the inverted trapezoid clamping groove 341, and the first transverse plate 322 is detachably connected with the slip 340 through the inverted trapezoid clamping groove 341 and the inverted trapezoid protrusion 3223. Meanwhile, the inverted trapezoid structure can avoid separation of the protrusions and the clamping grooves.

In some embodiments, a first end of the inverted trapezoidal shaped groove 341 extends through a sidewall of the slip 340, and the inverted trapezoidal shaped groove 341 is provided with a plug (not shown) to block the inverted trapezoidal shaped groove 341. When in installation, the plug is firstly opened, the first end of the inverted trapezoid clamping groove 341 is firstly clamped on the inverted trapezoid protrusion 3223, then the slip 340 is slid, the inverted trapezoid clamping groove 341 is clamped with the inverted trapezoid protrusion 3223, and finally the plug is installed on the first end of the inverted trapezoid clamping groove 341. Typically, the plug is mounted to the first end of the neck by bolting.

It should be noted that all the above solutions regarding the first transverse plate 322 are applicable to the second transverse plate 332, so that the two are symmetrical.

In some embodiments, the gripping surface of slip 340 is provided with an anti-slip layer, which is the surface that contacts the drill pipe, and by providing an anti-slip layer, friction with the drill pipe is increased, improving the grip on the drill pipe.

In particular, in some embodiments, the anti-slip layer is made of rubber, which can provide sufficient friction for good use.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solution of the present application, and not limiting thereof; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will appreciate that; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (5)

1. A core drill rod clamping device, comprising:

two ear plates are arranged at two ends of the bottom plate in the length direction;

The accommodating block is arranged on the bottom plate, is provided with an accommodating hole extending along the width direction of the bottom plate, and an avoidance hole and a guide hole extending along the length direction of the bottom plate, wherein the accommodating hole is separated from the avoidance hole, and the guide hole penetrates through the accommodating hole and the central line of the guide hole is intersected with the central line of the accommodating hole;

The clamping assembly comprises a bidirectional screw rod, a first bracket, a second bracket and two slips, the bidirectional screw rod penetrates through the avoidance holes to be rotationally connected to the two ear plates, the first bracket comprises a first vertical plate and a first transverse plate which are vertically connected, the first vertical plate is in threaded connection with a left-handed thread section of the bidirectional screw rod, the first transverse plate is in sliding connection with the guide hole, the second bracket comprises a second vertical plate and a second transverse plate which are vertically connected, the second vertical plate is in threaded connection with a right-handed thread section of the bidirectional screw rod, the second transverse plate is in sliding connection with the guide hole, the first bracket and the second bracket are symmetrically arranged relative to the central plane of the bottom plate, and the two slips are symmetrically arranged on the first transverse plate and the second transverse plate and are opposite in opening;

The slip is provided with an inverted trapezoid clamping groove along the width direction, the first transverse plate is provided with an inverted trapezoid protrusion, the inverted trapezoid protrusion is clamped in the inverted trapezoid clamping groove, the first end of the inverted trapezoid clamping groove penetrates through the side wall of the slip, and the inverted trapezoid clamping groove is provided with a plug to plug the inverted trapezoid clamping groove;

and the hydraulic motor is in transmission connection with the bidirectional screw rod.

2. The drill rod clamping device of the core drilling machine according to claim 1, wherein the guide hole is provided with a guide rib along the length direction of the guide hole, the first transverse plate is provided with a guide groove along the length direction of the first transverse plate, and the guide rib is matched with the guide groove; or alternatively, the first and second heat exchangers may be,

The guide hole is provided with a guide groove along the length direction of the guide hole, the first transverse plate is provided with a guide rib along the length direction of the first transverse plate, and the guide rib is matched with the guide groove.

3. The drill rod clamping device of the core drilling machine according to claim 1, wherein rollers are arranged on two side walls in the width direction of the first transverse plate, and the rollers are abutted with two side walls in the width direction of the guide hole.

4. A core drill pipe gripping apparatus according to any one of claims 1 to 3 wherein the gripping surface of the slips is provided with an anti-slip layer.

5. The core drill pipe clamping device according to claim 4, wherein the slip resistant layer is made of rubber.