CN223707559U - An adjustable support angle clamp - Google Patents

Abstract

The utility model relates to the technical field of supporting clamps, in particular to a clamp holder with an adjustable supporting angle, which comprises a mast and a clamping mechanism, wherein the clamping mechanism is arranged on the mast, a clamping hole for stabilizing a drill rod is formed in the clamping mechanism, the clamping mechanism comprises a clamping plate and telescopic supporting rods, the telescopic supporting rods are connected with the bottom of the clamping plate through angle adjusting components, two telescopic supporting rods are arranged, the clamping hole penetrates through the center of the clamping plate, the two telescopic supporting rods are symmetrically arranged relative to the clamping hole, and an auxiliary clamping component is further arranged between the two telescopic supporting rods. The multi-angle rotary locking device realizes multi-angle rotation and quick locking, is installed without anchor fixing, greatly improves the operation efficiency, and simultaneously improves the stability of the drill rod and the stability effect of the telescopic support rod through the auxiliary clamping assembly, thereby avoiding the bottom of the telescopic support rod from shifting and sliding.

Description

Clamp holder with adjustable supporting angle

Technical Field

The utility model relates to the technical field of supporting clamps, in particular to a clamp holder with an adjustable supporting angle.

Background

In the fields of geological exploration, engineering investigation and the like, the portable drilling machine is widely applied to complex terrain operation by virtue of the characteristics of flexibility and easiness in carrying. The clamp is used as a key component of the portable drilling machine, is usually arranged at the bottom of a drilling tower (or a mast) and above an orifice, mainly firmly clamps the drill string in specific procedures (such as connecting and disconnecting the drill rod, lifting the drill string and the like), and is a key device for guaranteeing stable drilling, lifting the drill and other operation flows.

The clamp holder is generally installed in a single-side connection mode due to the design limitation of compact and light-weight integral structure of the portable drilling machine, namely, the clamp holder is fixedly connected with the bottom of a drilling tower (or a mast) through 4 bolts only through one side, and no additional supporting structure is arranged at the bottom of the clamp holder, so that a suspended state is formed. Under normal operation conditions, for example, when the drill string is lifted out, the device can bear the total weight load of the suspended drill string in the drilled hole when the drill string is stably clamped by the clamp, and at the moment, the suspended structural strength can meet the basic operation requirement, and the device cannot deform or damage. However, during actual construction, construction beyond the rated capacity is often faced with special conditions such as deepening of the borehole, excessive gravity of the drill string beyond the rated load, or transient overload due to misoperation. Under such a scene, the tension born by the clamp holder can be far away from the super-conventional gravity load, the single-side suspended structure is difficult to bear the super-load, the clamp holder is extremely easy to deform irreversibly, even structural damage such as shearing fracture and the like is caused on a bolt at a connecting part, equipment shutdown maintenance and construction progress delay can be caused, and accidents can be caused due to the fact that a drill rod is out of control (falls in a drill hole).

Disclosure of utility model

The utility model provides a clamp holder with an adjustable supporting angle for solving the technical problems.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides an adjustable supporting angle's holder, includes mast and fixture, fixture installs on the mast, be provided with the centre gripping hole that is used for stabilizing the drilling rod on the fixture, fixture includes grip block and telescopic bracing piece, the telescopic bracing piece passes through angle adjusting component and is connected with the bottom of grip block, telescopic bracing piece is provided with two, the centre gripping hole runs through and sets up in the centre of grip block, two telescopic bracing piece is with centre gripping hole symmetrical arrangement, two still be provided with auxiliary clamping assembly between the telescopic bracing piece.

Further, auxiliary clamping assembly includes auxiliary lantern ring, connecting screw and jack-up bolt, the lateral wall symmetry of auxiliary lantern ring is provided with two screw holes that supply connecting screw to pass. After the telescopic support rod is fixed, the auxiliary clamping assembly provides auxiliary support for radial constraint and clamping force to the drill rod. The two symmetrically arranged screw holes can ensure the symmetrical transmission of the force of the auxiliary lantern ring when the auxiliary lantern ring is pulled or twisted, and avoid the deformation caused by the unbalanced load of the auxiliary lantern ring. And simultaneously, after the two screw holes are matched with the connecting screw rod, the auxiliary lantern ring is positioned and clamped by the pretightening force of the jacking bolt. The structure enables the auxiliary clamping to form an integral supporting system when being matched with the telescopic supporting rod, so that the radial stability of the drill rod can be improved, the shearing and bending moment of the branch arm part can be reduced when instantaneous overload occurs, the stress concentration of the main clamping piece is reduced, and the supporting failure caused by the soft ground or vibration is avoided.

Further, one end of the connecting screw is provided with a limiting ring, and the diameter of the limiting ring is larger than that of the screw hole. The limiting ring enables the connecting screw rod not to be separated from the auxiliary lantern ring, and then the auxiliary lantern ring is located under the clamping hole and used for playing an auxiliary guiding role on the drill rod. Preferably, the screw hole of the inner wall of the auxiliary collar is provided with an accommodating space of the limiting ring, namely, the limiting ring can not influence the drill rod to penetrate through the inner ring of the auxiliary collar.

Further, the upper end of telescopic bracing piece is provided with the locating hole that supplies the connecting screw rod to run through, jack-up bolt and connecting screw rod adaptation threaded connection. After the jack bolts fix the connecting screw rods at the two ends, the auxiliary lantern ring and the two telescopic supporting rods form transverse connection and fixation. When the drill rod sequentially passes through the clamping holes and the auxiliary lantern rings, the falling and supporting failure can not occur even if the ground below any telescopic supporting rod is soft or vibrates, so that the stable supporting effect is ensured. Simultaneously, after two telescopic bracing pieces are fixed, auxiliary collar also is fixed, and auxiliary collar can provide auxiliary support to the direction stability of drilling rod.

Further, the inner diameter of the auxiliary collar is the same as the inner diameter of the clamping hole. The auxiliary sleeve ring and the clamping hole are concentrically arranged, so that the drill rod is always positioned on the same geometric center line when passing through the clamping hole and the auxiliary sleeve ring, and the increase or instability of bending moment caused by radial eccentricity is avoided.

Further, the angle adjusting component is connected with the bottom of the clamping plate and the top end of the telescopic supporting rod respectively, and the angle adjusting component is of a spherical hinge structure. The spherical hinge structure provides multi-degree-of-freedom angle adjustment capability between the telescopic supporting rod and the clamping plate, so that the telescopic supporting rod can still be reliably connected with the clamping plate under different inclination angles and can transmit axial or overturning force. The ball hinge consists of a ball body and a ball socket, wherein the end of the ball body is fixedly connected with the top end of the telescopic supporting rod or connected with the top end of the telescopic supporting rod through a connecting piece, the end of the ball socket is fixedly arranged on a bottom bracket of the clamping plate, and the ball body can realize large-range rotation and inclination in the ball socket, so that the supporting rod is allowed to be rapidly attached to the ground on uneven ground or an operation scene requiring angle adaptation.

Further, the inclination angle of the spherical hinge structure is adjusted to be 45-90 degrees, and the spherical hinge structure is provided with a locking knob. The outer tube is a hollow screw rod, the inner tube is an inner screw rod which is matched with the threads of the outer tube or is in rolling guide type, and the whole length is changed by rotating the inner screw rod and the outer screw rod or by locking and then sliding fit, so that the length is adjustable. The locking nut is used for locking the inner pipe and the outer pipe after reaching the required length, and preventing the rotation or axial looseness under the condition of loading or vibration.

Further, the telescopic support rod main body is of a hollow screw rod structure nested inside and outside, and the hollow screw rod structure is provided with a locking nut for tightly pushing the length to be adjusted.

Further, a connecting plate is arranged on the clamping plate and is connected with an adaptive connecting interface on the mast through a nut. The size, hole site and bolt arrangement of the connecting plate are designed in a standardized way according to the reserved connecting interfaces on the mast, so that the clamping plate is firmly connected with the flange or the interface plate at the end part of the mast through a plurality of high-strength bolts.

Further, the drilling device further comprises a ground for supporting the mast, a drill hole for the drill rod to pass through is reserved on the ground, and the drill hole corresponds to the clamping hole. In order to ensure the smoothness and safety of the drill rod in the clamping and passing processes, the ground is provided with a drill hole in advance, and the size and the position of the drill hole coaxially correspond to the clamping hole on the clamping plate, so that the drill rod can smoothly pass through the drill hole on the ground when being clamped and enters the hole site.

Compared with the prior art, the utility model has the following beneficial effects:

1. The telescopic supporting rod with adjustable height is arranged based on the hidden trouble of the structural strength of the existing clamp holder under the special working condition, and the structural rigidity, the bearing capacity and the overload resistance of the clamp mechanism under the complex working condition can be improved through the adaptive adjustment, so that the problem of deformation and damage caused by excessive tension is avoided;

2. According to the utility model, the angle adjusting assembly is arranged to realize multi-angle rotation and quick locking, so that the problem that a supporting structure is not adjustable or is complicated to adjust in the prior art is solved, and the installation is not required to be fixed by a ground anchor, and the supporting structure can be directly contacted with the bottom of the clamp holder and the working surface to realize supporting, so that the working efficiency is greatly improved;

3. According to the utility model, the auxiliary clamping assembly is arranged, so that the stability of control of the drill rod can be improved after the telescopic support rod is fixed, and meanwhile, the fixed guide of the drill rod can also reversely improve the grabbing and supporting effect of the telescopic support rod, so that the bottom of the telescopic support rod is prevented from shifting and sliding.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present utility model;

FIG. 2 is a schematic plan view of the present utility model;

FIG. 3 is a schematic structural view of the auxiliary clamping assembly;

The drawing mark comprises a 1-mast, a 2-drill rod, a 3-clamping hole, a 4-clamping plate, a 5-telescopic supporting rod, a 6-angle adjusting assembly, a 7-auxiliary sleeve ring, an 8-connecting screw rod, a 9-jacking bolt, a 10-screw hole, an 11-limiting ring, a 12-connecting plate, a 13-screw cap, a 14-ground and a 15-drilling hole.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.

The first embodiment of the utility model discloses a clamp holder with adjustable supporting angle, as shown in fig. 1-3, comprising a mast 1 and a clamping mechanism, wherein the clamping mechanism is arranged on the mast 1, a clamping hole 3 for stabilizing a drill rod 2 is arranged on the clamping mechanism, the clamping mechanism comprises a clamping plate 4 and a telescopic supporting rod 5, the telescopic supporting rod 5 is connected with the bottom of the clamping plate 4 through an angle adjusting component 6, two telescopic supporting rods 5 are arranged, the clamping hole 3 penetrates through the center of the clamping plate 4, the two telescopic supporting rods 5 are symmetrically arranged about the clamping hole 3, and an auxiliary clamping component is further arranged between the two telescopic supporting rods 5.

The auxiliary clamping assembly comprises an auxiliary sleeve ring 7, a connecting screw rod 8 and a jacking bolt 9, wherein two screw holes 10 for the connecting screw rod 8 to pass through are symmetrically formed in the side wall of the auxiliary sleeve ring 7. Specifically, the auxiliary clamping assembly provides auxiliary support for radial restraint and clamping force to the drill pipe 2 after the telescopic support rod 5 is fixed. The two symmetrically arranged screw holes 10 can ensure the symmetrical transmission of the force of the auxiliary lantern ring 7 when the auxiliary lantern ring 7 is pulled or twisted, and avoid the deformation caused by the unbalanced load of the auxiliary lantern ring 7. And simultaneously, after the two screw holes 10 are matched with the connecting screw rod 8, the auxiliary lantern ring 7 is positioned and clamped by the pretightening force of the jacking bolt 9. The structure enables the auxiliary clamping to improve the radial stability of the drill rod 2 when the auxiliary clamping is matched with the telescopic supporting rod to form an integral supporting system, and can also shear and bend the part of the branch arm when instantaneous overload occurs, so that the stress concentration of the main clamping piece is reduced, and the supporting failure caused by the softness or vibration of the ground 14 is avoided.

One end of the connecting screw rod 8 is provided with a limiting ring 11, and the diameter of the limiting ring 11 is larger than that of the screw hole 10. Specifically, the limiting ring 11 makes the connecting screw rod 8 not be separated from the auxiliary sleeve ring 7, and then makes the auxiliary sleeve ring 7 be located under the clamping hole 3 for playing an auxiliary guiding role on the drill rod 2. Preferably, the inner wall screw hole 10 of the auxiliary collar 7 is provided with a receiving space for the limiting ring 11, i.e. the limiting ring 11 does not influence the penetration of the drill rod 2 through the inner ring of the auxiliary collar 7.

The upper end of the telescopic supporting rod 5 is provided with a positioning hole for the connecting screw rod 8 to penetrate, and the jacking bolt 9 is in adaptive threaded connection with the connecting screw rod 8. Specifically, after the jack bolts 9 fix the connecting screws 8 at two ends, the auxiliary collar 7 and the two telescopic supporting rods 5 form transverse connection and fixation. When the drill rod 2 sequentially passes through the clamping holes 3 and the auxiliary collar 7, the falling and supporting failure can not occur even if the ground 14 below any telescopic supporting rod 5 is soft or vibrates, so that a stable supporting effect is ensured. Simultaneously, after two telescopic bracing pieces 5 are fixed, supplementary lantern ring 7 also is fixed, and supplementary lantern ring 7 can provide auxiliary stay to the direction stability of drilling rod 2.

The inner diameter of the auxiliary collar 7 is the same as the inner diameter of the clamping hole 3. Specifically, the auxiliary sleeve ring 7 and the clamping hole 3 are concentrically arranged, so that the drill rod 2 is always positioned on the same geometric center line when passing through the clamping hole 3 and the auxiliary sleeve ring 7, and the increase or instability of bending moment caused by radial eccentricity is avoided.

The angle adjusting component 6 is respectively connected with the bottom of the clamping plate 4 and the top end of the telescopic supporting rod 5, and the angle adjusting component 6 is of a spherical hinge structure. Specifically, the spherical hinge structure provides the angle adjustment capability of multiple degrees of freedom between the telescopic supporting rod 5 and the clamping plate 4, so that the telescopic supporting rod 5 can still be reliably connected with the clamping plate 4 under different inclination angles and can transmit axial or overturning force. The spherical hinge consists of a ball body and a ball socket, wherein the end of the ball body is fixedly connected with the top end of the telescopic supporting rod 5 or connected through a connecting piece, the end of the ball socket is fixedly arranged on a bottom bracket of the clamping plate 4, and the ball body can realize large-range rotation and inclination in the ball socket, so that the supporting rod is allowed to be quickly attached to the ground 14 on uneven ground 14 or in a working scene requiring angle adaptation. The spherical hinge structure is a conventional technology at present, and the specific internal structure thereof can be obtained from known materials by a person skilled in the art according to requirements, and is not described herein.

The inclination angle adjusting range of the spherical hinge structure is 45 degrees to 90 degrees, and the spherical hinge structure is provided with a locking knob. Specifically, the locking knob is a manually operated quick lock mechanism, and a frictional locking force is applied to the ball or socket by screwing the knob, so that the angle locking is realized without tools or with simple tools. The cooperation of the locking knob and the spherical hinge structure is also a conventional technical means, and the structure is not a core technical scheme of the application, and is not repeated here.

The telescopic supporting rod 5 is characterized in that the main body of the telescopic supporting rod 5 is of a hollow screw rod structure nested inside and outside, and a locking nut used for tightly pushing the length is structurally arranged on the hollow screw rod. Specifically, the outer tube is a hollow screw (with internal threads or guide grooves), the inner tube is an internal screw matched with the threads or rolling guide type, and the whole length is changed by rotating the internal screw and the external screw or by sliding fit after locking, so that the length is adjustable. The hollow design not only reduces the weight and is convenient for cleaning mud and impurities, but also ensures the capability of transmitting high push-pull force through threads. The locking nut is used for locking the inner pipe and the outer pipe after reaching the required length and preventing the inner pipe and the outer pipe from rotating or loosening axially under the condition of loading or vibration, and the locking nut can adopt double-nut back locking, wedge-shaped clamping sleeves or stop devices with cross section keys to improve the loosening resistance. The structure is not a core technical scheme of the present application, and will not be described herein.

The clamping plate 4 is provided with a connecting plate 12, and the connecting plate 12 is connected with an adaptive connecting interface on the mast 1 through a nut 13. Specifically, the size and hole position of the connecting plate 12 are designed according to the reserved connecting interface on the mast 1, so that the clamping plate 4 is firmly connected with the flange or the interface plate at the end of the mast 1 through the nuts 13.

Also included is a ground 14 for supporting the mast 1, said ground 14 being reserved with a borehole 15 for the passage of the drill rod 2, said borehole 15 corresponding to the clamping hole 3. Specifically, the ground 14 is considered a generic term for a construction support surface in the present application. In order to ensure smooth and safe operation of the drill rod 2 during clamping and passing, the ground 14 is provided with a drill hole 15 in advance, and the size and position of the drill hole 15 coaxially correspond to the clamping hole 3 on the clamping plate 4, so that the drill rod 2 can pass through the drill hole 15 of the ground 14 smoothly when being clamped and entering the hole position.

In the second embodiment, based on the first embodiment, the present embodiment proposes a specific working principle of a gripper with an adjustable supporting angle.

The portable drilling machine is moved over the intended borehole 15 and the entire clamping mechanism is mounted to a predetermined connection interface at the bottom of the mast 1 using the screw cap 13. The two connecting screws 8 respectively penetrate out from the inner side of the screw hole 10 of the auxiliary lantern ring 7, the free ends of the two connecting screws 8 penetrate through the positioning holes of the telescopic supporting rod 5, and then the drill rod 2 sequentially penetrates through the clamping hole 3 and the auxiliary lantern ring 7. The locking knob on the two spherical hinge structures is loosened, so that the telescopic supporting rod 5 can swing freely. The approximate angle of each telescopic support bar 5 is manually adjusted according to the actual flatness and inclination of the ground 14 so that the bottom thereof can contact the ground as smoothly as possible. After the telescopic supporting rod 5 is fixed, the two connecting screws 8 are locked through the jacking bolts 9. At this time, the auxiliary collar 7 plays an auxiliary stabilizing role in the longitudinal direction of the drill rod 2, and in turn, the drill rod 2 plays a stabilizing role in the two telescopic support rods 5, so that the telescopic support rods 5 are prevented from sliding or displacing. After the length of the telescopic supporting rod 5 is fixed and the bottom is firmly grounded, the spherical hinge angle is checked again and fine-tuned, so that the telescopic supporting rod 5 is ensured to be in an optimal stress state. And finally, thoroughly screwing a locking knob on the spherical hinge structure to completely lock the hinge angle, thereby forming a rigid support.

In a third embodiment, based on the first embodiment, an improved clamping mechanism is provided in this embodiment.

The angle adjusting assembly 6 of the present embodiment adopts a universal joint structure, and is composed of a pair of hinge shafts forming 90 ° with each other, so that a wider range of angle adjustment (the adjustment range is extended to 30 ° -90 °) can be realized. The universal joint both ends are connected with clamping plate 4 bottom and telescopic bracing piece 5 top through the ring flange respectively to carry out quick locking through butterfly nut. The structure is suitable for being used under the condition of inclined ground 14 or complex terrain, and can better adapt to the uneven condition of ground 14.

The telescopic supporting rod 5 adopts a two-stage telescopic structure and comprises an outer pipe, a middle pipe and an inner pipe three-stage sleeve. Screw thread adjustment is adopted between the outer pipe and the middle pipe, and a bolt type quick positioning structure is adopted between the middle pipe and the inner pipe. The outside of the outer tube is provided with a length scale, so that the supporting height can be accurately adjusted. The multistage telescopic structure enables the telescopic ratio of the support rod to be larger, and can adapt to the height change requirement of a larger range.

Aiming at the working condition of the soft foundation, the embodiment adds a supporting chassis at the bottom of the telescopic supporting rod 5. The supporting chassis is a round steel plate, the diameter of the supporting chassis is about 3-5 times of that of the supporting rod, and the bottom of the supporting chassis is welded with an anti-skid rack. The larger ground surface 14 area can effectively reduce the pressure to the ground surface 14, and prevent the supporting rods from sinking too much in the soft soil foundation to influence the supporting effect.

The embodiment is particularly suitable for construction environments with complex geological conditions and poor bearing capacity of the ground 14, such as swamps, sandy lands and other special terrains, and can provide more stable and reliable support guarantee for the clamp holder. The supporting structure adopts light weight material and compact design, the whole weight is adapted to the carrying requirement of the portable drilling machine, and the installation is not required to be fixed by a ground anchor, so that the portable drilling machine can be directly contacted with the bottom of the clamp holder and the working surface to realize supporting.

There are, of course, many other embodiments of the utility model that can be made by those skilled in the art in light of the above teachings without departing from the spirit or essential scope thereof, but that such modifications and variations are to be considered within the scope of the appended claims.

Claims (10)

1. The clamp holder with the adjustable supporting angle comprises a mast (1) and a clamping mechanism, wherein the clamping mechanism is arranged on the mast (1), and clamping holes (3) used for stabilizing a drill rod (2) are formed in the clamping mechanism, and the clamp holder is characterized in that the clamping mechanism comprises a clamping plate (4) and telescopic supporting rods (5), the telescopic supporting rods (5) are connected with the bottom of the clamping plate (4) through angle adjusting components (6), the telescopic supporting rods (5) are provided with two, the clamping holes (3) penetrate through the center of the clamping plate (4), the two telescopic supporting rods (5) are symmetrically arranged with respect to the clamping holes (3), and auxiliary clamping components are further arranged between the two telescopic supporting rods (5).

2. The holder with adjustable supporting angle according to claim 1, wherein the auxiliary holding assembly comprises an auxiliary collar (7), a connecting screw (8) and a jacking bolt (9), and two screw holes (10) for the connecting screw (8) to pass through are symmetrically formed in the side wall of the auxiliary collar (7).

3. The holder with adjustable supporting angle according to claim 2, wherein one end of the connecting screw rod (8) is provided with a limiting ring (11), and the diameter of the limiting ring (11) is larger than that of the screw hole (10).

4. The holder with adjustable supporting angle according to claim 3, wherein the upper end of the telescopic supporting rod (5) is provided with a positioning hole for the connecting screw rod (8) to penetrate, and the jacking bolt (9) is in adaptive threaded connection with the connecting screw rod (8).

5. An adjustable support angle holder according to claim 4, characterized in that the inner diameter of the auxiliary collar (7) is the same as the inner diameter of the holding hole (3).

6. The holder with adjustable supporting angle according to claim 1, wherein the angle adjusting component (6) is respectively connected with the bottom of the holding plate (4) and the top end of the telescopic supporting rod (5), and the angle adjusting component (6) is of a spherical hinge structure.

7. The holder according to claim 6, wherein the inclination angle of the spherical hinge structure is adjusted to 45 DEG to 90 DEG, and the spherical hinge structure is provided with a locking knob.

8. The holder with adjustable supporting angle according to claim 1, wherein the main body of the telescopic supporting rod (5) is a hollow screw rod structure nested inside and outside, and the hollow screw rod structure is provided with a locking nut for propping up the adjustable length.

9. The holder with adjustable supporting angle according to claim 1, characterized in that the holding plate (4) is provided with a connecting plate (12), the connecting plate (12) is connected with an adaptive connecting interface on the mast (1) through a nut (13).

10. The holder with adjustable supporting angle according to claim 1, further comprising a ground (14) for supporting the mast (1), wherein a drill hole (15) for the drill rod (2) to pass through is reserved on the ground (14), and the drill hole (15) corresponds to the holding hole (3).