CN217681562U

CN217681562U - A clamping device and down-the-hole hammer for down-the-hole hammer

Info

Publication number: CN217681562U
Application number: CN202221350574.8U
Authority: CN
Inventors: 赵鑫宇
Original assignee: Yahe Zhizao Jiangsu Technology Co ltd
Current assignee: Yahe Zhizao Jiangsu Technology Co ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-10-28
Anticipated expiration: 2032-06-01

Abstract

The utility model relates to a geological drilling sampling equipment technical field especially relates to a clamping device and down-the-hole hammer for down-the-hole hammer. The utility model provides a clamping device for a down-the-hole hammer, which comprises a guide seat, a pressing plate, a wedge block and a driving mechanism; a guide inclined plane is formed on the guide seat, a guide groove is formed on the guide inclined plane, the driving mechanism can drive the wedge block to slide in the guide groove, and meanwhile, the lower end of the wedge block forms a cutting surface; driving the wedge block to move upwards by the down-the-hole hammer driving mechanism, taking the wedge block into the guide groove and fixing the wedge block, wherein the cutting surface on the wedge block is not contacted with the core, and the down-the-hole hammer normally performs drilling operation; when the core needs to be cut, the down-the-hole hammer stops rotating and drilling, the driving mechanism drives the wedge block to move downwards along the guide groove, the cutting surface on the wedge block is in contact with the core and applies a downward cutting force to the core, then the down-the-hole hammer is started to rotate, the core is cut off by matching with the rotating torque force of the down-the-hole hammer, and therefore the core is taken out of the hole, and coring work is completed.

Description

A clamping device and down-the-hole hammer for down-the-hole hammer

Technical Field

The utility model relates to a geological drilling sampling equipment technical field especially relates to a clamping device for down-the-hole hammer.

Background

The down-the-hole hammer drilling process is generally adopted in large-diameter hard rock drilling at home and abroad. The single down-the-hole hammer is annularly arranged to form the barrel-shaped drill bit, on one hand, because the area of annularly cutting broken rocks is small, the required breaking power is low, and the drilling efficiency is high. At the same time, considerable perpendicularity can also be maintained due to the presence of the core. However, the problem that how to cut off the large-diameter rock core in the middle of the barrel-shaped drill bit and take the rock core out of the hole is solved at present at home and abroad.

SUMMERY OF THE UTILITY MODEL

The utility model discloses (one) the technical problem that solve is: current down-the-hole hammers do not have an effective means of cutting the core after the drill sample is completed.

(II) technical scheme

In order to solve the technical problem, the clamping device for the down-the-hole hammer comprises a guide seat, a wedge block and a driving mechanism;

the wedge block driving mechanism is connected with the wedge block in a transmission manner so as to drive the wedge block to slide along the guide groove, and a cutting surface is formed at the lower end of the wedge block.

According to the utility model discloses an embodiment, actuating mechanism's lower extreme with the voussoir rotates to be connected, so that actuating mechanism reciprocates and drives the voussoir is followed the guide way slides.

According to the utility model discloses an embodiment, the voussoir is including the sliding part and the connecting portion that are connected, the sliding part install in the guide way, connecting portion with actuating mechanism rotates and connects.

According to the utility model discloses an embodiment, actuating mechanism's lower extreme is equipped with first connection ear, be formed with first slot on the first connection ear, be equipped with first shaft hole on two relative lateral walls of first slot, be equipped with first picture peg on the connecting portion, the relative both sides of first picture peg are equipped with first pivot, first pivot inserts correspondingly in the first shaft hole.

According to the utility model discloses an embodiment, sliding part is for being rectangle platelike structure, connecting portion are isosceles trapezoid's massive structure, one side inclined plane of connecting portion does the cutting face, first picture peg connect in on the opposite side inclined plane of connecting portion.

According to an embodiment of the present invention, the cutting surface is provided with metal teeth.

According to an embodiment of the present invention, the metal teeth are provided in a plurality of, evenly distributed on the cutting face.

According to the utility model discloses an embodiment, still include two the clamp plate, two the clamp plate is located respectively the both sides of connecting portion are fixed on the direction inclined plane of guide holder, just the clamp plate has at least partly to be located the upside of guide way, in order to prevent the sliding part breaks away from the guide way.

According to the utility model discloses an embodiment, actuating mechanism is the hydro-cylinder.

The utility model discloses another aspect embodiment body has used a down-the-hole hammer, including columniform barrel and any embodiment of the aforesaid a clamping device for down-the-hole hammer, form in the barrel and hold the chamber, clamping device is located hold the intracavity, just actuating mechanism's upper end and barrel inner wall rotate to be connected.

The utility model has the advantages that: the utility model provides a clamping device for a down-the-hole hammer, which comprises a guide seat, a pressing plate, a wedge block and a driving mechanism; a guide inclined plane is formed on the guide seat, a guide groove is formed on the guide inclined plane, the driving mechanism can drive the wedge block to slide in the guide groove, and meanwhile, the lower end of the wedge block forms a cutting surface; driving the wedge block to move upwards to be accommodated in the guide groove and fixed by a down-the-hole hammer driving mechanism, wherein the cutting surface on the wedge block is not contacted with the core, and the down-the-hole hammer normally performs drilling operation; when the core needs to be cut, the down-the-hole hammer stops rotating and drilling, the driving mechanism drives the wedge block to move downwards along the guide groove, the cutting surface on the wedge block is in contact with the core and applies a downward cutting force to the core, then the down-the-hole hammer is started to rotate, the core is cut off by matching with the rotating torque force of the down-the-hole hammer, and therefore the core is taken out of the hole, and coring work is completed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a clamping device for a down-the-hole hammer according to an embodiment of the present invention

Fig. 2 is a schematic structural diagram of a down-the-hole hammer according to an embodiment of the present invention.

An icon:

1-a clamping device; 11-a guide seat; 111-a guide ramp; 1111-a guide groove; 12-a wedge block; 121-a slide; 122-a connecting portion; 1221-a cutting face; 1222-a first board; 1223-metal teeth; 13-a platen; 131-a through hole; 14-oil cylinder; 141-first connecting lug; 1411-a first shaft aperture; 142-a second board;

2-a down-the-hole hammer; 21-a cylinder body; 211 an accommodating cavity; 212-a second engaging lug; 2121-second axial bore; 22-interlayer.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "center", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, one embodiment of the present invention provides a clamping device 1 for a down-the-hole hammer 2, comprising a guide shoe 11, a wedge 12 and a drive mechanism; the guide seat 11 is formed with an inclined guide slope 111, the guide slope 111 is formed with a guide slot 1111, the wedge 12 is installed in the guide slot 1111, the driving mechanism is in transmission connection with the wedge 12 to drive the wedge 12 to slide along the guide slot 1111, and a cutting surface 1221 is formed at the lower end of the wedge 12.

The clamping device 1 for the down-the-hole hammer 2 provided by the embodiment comprises a guide seat 11, a pressure plate 13, a wedge block 12 and a driving mechanism; a guide inclined plane 111 is formed on the guide seat 11, a guide groove 1111 is formed on the guide inclined plane 111, the driving mechanism can drive the wedge block 12 to slide in the guide groove 1111, and simultaneously, the lower end of the wedge block 12 forms a cutting surface 1221; before the down-the-hole hammer 2 drills, the driving mechanism drives the wedge block 12 to move upwards, the wedge block is collected into the guide groove 1111 and fixed, at the moment, the cutting surface 1221 on the wedge block 12 is not in contact with a core, and the down-the-hole hammer 2 is started to normally drill; when the down-the-hole hammer 2 needs to cut a rock core after drilling to a certain depth, the down-the-hole hammer 2 stops rotating and drilling, the driving mechanism drives the wedge block 12 to move downwards along the guide groove 1111, the cutting surface 1221 on the wedge block 12 is in contact with the rock core and applies an oblique downward cutting force to the rock core, then the down-the-hole hammer 2 is started to rotate, the rock core is cut off by matching with the rotating torque force of the down-the-hole hammer 2, and therefore the rock core is taken out of the hole, and the core taking work is completed.

According to the utility model discloses an embodiment, actuating mechanism's lower extreme with voussoir 12 rotates to be connected, so that actuating mechanism reciprocates and drives voussoir 12 is followed guide way 1111 slides. Since the driving mechanism moves up and down in this embodiment, the lower end of the driving mechanism is rotatably connected to the wedge 12, so that when the driving mechanism moves downward, the downward force of the driving mechanism can be resolved into the force for driving the wedge 12 to slide up and down along the guide groove 1111.

As shown in fig. 1, the wedge 12 includes a sliding portion 121 and a connecting portion 122 connected to each other, the sliding portion 121 is installed in the guide groove 1111, and the connecting portion 122 is rotatably connected to the driving mechanism; in this embodiment, the sliding portion 121 is a rectangular plate-shaped structure, the connecting portion 122 is a block-shaped structure with an isosceles trapezoid shape, and the guide groove 1111 is an elongated rectangular groove, so the sliding portion 121 has an elongated plate-shaped structure, and the length directions of the two are the same. The inclined surface of the connecting portion 122 on one side is the cutting surface 1221, that is, the inclined surface of the connecting portion 122 on the lower side forms the cutting surface 1221, and when the driving wedge 12 moves downward, the cutting surface 1221 also moves downward to protrude to the outside of the guide groove 1111 and contact the core, as shown in fig. 1, the cutting surface 1221 is an inclined surface, the tip of the cutting surface 1221 is located at the lower end of the connecting portion 122, and the cutting surface 1221 is inclined toward the upper side, so that an inclined downward cutting force is applied to the core when the tip of the cutting surface 1221 contacts the core. Optionally, in this embodiment, the connecting portion 122 and the integral cutting structure are formed by cutting, but the connecting portion 122 may also be a split structure, and the two are fixed by welding. In this embodiment, the connecting portion 122, the sliding portion 121 and the guide seat 11 are made of metal materials, such as iron, alloy, steel, etc.

As shown in fig. 1, a first connecting lug 141 is provided at a lower end of the driving mechanism, a first slot is formed on the first connecting lug 141, first shaft holes 1411 are provided on two opposite side walls of the first slot, a first inserting plate 1222 is provided on the connecting portion 122, first rotating shafts are provided on two opposite sides of the first inserting plate 1222, the first rotating shafts are inserted into the corresponding first shaft holes 1411, and the first inserting plate 1222 is connected to an inclined surface on the other side of the connecting portion 122; since the driving mechanism moves up and down, the first insert plate 1222 is connected to the other inclined surface, and the first insert plate 1222 is substantially directed upward, so that the first insert plate 1222 can be prevented from protruding outward by an excessively long distance to affect the space inside the cylinder 21 of the down-the-hole hammer 2, as shown in fig. 1.

As shown in fig. 1, the cutting surface 1221 is provided with metal teeth 1223, when a core is cut, the down-the-hole hammer 2 rotates to drive the core to rotate, and the metal teeth 1223 contact with the core to cut the core, so that the core can be cut more easily; preferably, in this embodiment, the plurality of metal teeth 1223 are provided, the plurality of metal teeth 1223 are uniformly distributed on the cutting surface 1221, and the plurality of metal teeth 1223 are provided and uniformly distributed on the cutting surface 1221, so that sufficient and uniform cutting force can be provided to better cut the core.

As shown in fig. 1, the clamping device 1 further includes two pressing plates 13, the two pressing plates 13 are respectively located at two sides of the connecting portion 122 and fixed on the guide slope 111 of the guide base 11, and at least a portion of the pressing plate 13 is located at an upper side of the guide groove 1111 to prevent the sliding portion 121 from being separated from the guide groove 1111, the width of the sliding portion 121 is greater than the width of the connecting portion 122, the two pressing plates 13 are located at two sides of the connecting portion 122, wherein the pressing plate 13 has a long plate-shaped structure, and a projection of at least a portion of the pressing plate 13 on the guide slope 111 is located in the guide groove 1111, when the driving mechanism drives the wedge 12 to move upwards, the sliding portion 121 moves upwards and is blocked by the pressing plate 13, and the sliding portion 121 does not separate from the guide groove 1111 from an opening of the guide groove 1111 and can only slide upwards and downwards along the guide groove 1111. Optionally, in this embodiment, a through hole 131 is formed in the pressing plate 13, a threaded hole is correspondingly formed in the guide inclined plane 111, and the pressing plate 13 is fixed on the guide inclined plane 111 in a screw connection manner.

As shown in fig. 1, the lower side of the guide groove 1111 is an opening structure, and when the driving mechanism moves downward, the driving mechanism drives the wedge 12 to extend out from the opening of the lower side of the guide groove 1111, that is, the lower side of the guide groove 1111 is not provided with a blocking structure, so as to avoid the interference between the sliding portion 121 and the guide groove 1111, and ensure that the cutting surface 1221 at the lower portion of the connecting portion 122 can smoothly extend out to contact with the core. Preferably, in this embodiment, the driving mechanism is an oil cylinder 14, an upper end of the oil cylinder 14 is rotatably connected to the wall of the down-the-hole hammer 2, a lower end of the oil cylinder 14 is rotatably connected to the connecting portion 122 of the wedge 12, and the oil cylinder 14 can extend or retract to drive the connecting portion 122 to slide up and down along the guide groove 1111. Wherein, hydro-cylinder 14 can be hydraulic cylinder 14, and the piston rod that lets in hydraulic oil and can drive reciprocates, and the piston rod rotates with connecting portion 122 to be connected, and the piston rod reciprocates and to exert a pulling force or the thrust along guide way 1111 inclined plane direction for connecting portion 122, and then drives connecting portion 122 and slide from top to bottom along guide way 1111, and connecting portion 122 and sliding part 121 are even as an organic whole, can drive sliding part 121 and slide from top to bottom.

The embodiment of the utility model provides a another aspect also provides a down-the-hole hammer 2, as shown in fig. 2, down-the-hole hammer 2 includes cylindrical barrel 21 and the clamping device 1 for down-the-hole hammer 2 of any embodiment, form in the barrel 21 and hold the chamber 211, clamping device 1 is located hold the chamber 211, and the upper end of actuating mechanism is connected with the barrel 21 inner wall rotation; the cylinder body 21 comprises an inner cylinder wall and an outer cylinder wall, an interlayer 22 is formed between the inner cylinder wall and the outer cylinder wall, the clamping device 1 is positioned in the interlayer 22, an inlet and an outlet are formed in the inner cylinder wall, the oil cylinder 14 can drive the wedge block 12 to move up and down along the guide groove 1111, and when the wedge block 12 moves down along the guide groove 1111, the cutting surface 1221 on the connecting part 122 can extend into the inner side of the inner cylinder wall through the inlet and the outlet to be contacted with a rock core; as the wedge 12 moves up the guide slot 1111, the cutting surface 1221 on the connecting portion 122 can be drawn into the pocket 22 through the access opening. Preferably, in this embodiment, the inner cylinder wall of the cylinder body 21 is fixedly connected with a second connection lug 212, a second slot is formed on the second connection lug 212, two opposite side walls of the second slot are provided with second shaft holes 2121, the upper end of the oil cylinder 14 is provided with a second insertion plate 142, two opposite sides of the second insertion plate 142 are respectively provided with a second rotation shaft, and the second rotation shafts are rotatably matched with the second shaft holes 2121.

The working principle of the clamping device 1 provided by the present invention for cutting off a core is described below with reference to fig. 1 and 2.

When the down-the-hole hammer 2 is drilling normally, the cylinder 14 is retracted and the wedge 12 is hidden in the interlayer 22 of the down-the-hole hammer 2 and does not contact the core. When the down-the-hole hammer 2 drills to a certain depth, the down-the-hole hammer 2 stops rotating and drilling, the oil cylinder 14 extends and moves downwards, the lower side of the oil cylinder 14 is rotatably connected with the connecting part 122 to drive the connecting part 122 to move downwards, the connecting part 122 is connected with the sliding part 121 into a whole, the sliding part 121 can slide downwards along the guide groove 1111, and meanwhile, the pressure plate 13 can prevent the sliding part 121 from being separated from the guide groove 1111, the connecting part 122 extends into the inner side of the inner cylinder wall through an inlet and an outlet and is contacted with the rock core, the cutting surface 1221 on the connecting part 122 can provide an oblique downward cutting force for the rock core through the increase of the pressure of the oil cylinder 14, meanwhile, the down-the-hole hammer 2 is started to rotate, the rock core is cut off by matching with the rotating torque force of the down-the-hole hammer 2, and therefore, the rock core is taken out of the hole, and the coring work is completed. After coring is completed, the oil cylinder 14 is started to drive the oil cylinder 14 to retract and move upwards, and further drive the connecting part 122 of the wedge block 12 to be retracted into the interlayer 22 through the inlet and the outlet.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamping device for a down-the-hole hammer, characterized by: comprises a guide seat, a wedge block and a driving mechanism;

2. A clamping device for a down-the-hole hammer as claimed in claim 1, wherein: the lower end of the driving mechanism is rotatably connected with the wedge block, so that the driving mechanism moves up and down to drive the wedge block to slide along the guide groove.

3. A clamping device for a down-the-hole hammer as claimed in claim 2, wherein: the wedge block comprises a sliding part and a connecting part which are connected, the sliding part is installed in the guide groove, and the connecting part is rotationally connected with the driving mechanism.

4. A clamping device for a down-the-hole hammer as claimed in claim 3, wherein: the lower extreme of actuating mechanism is equipped with first connection ear, be formed with first slot on the first connection ear, be equipped with first shaft hole on two relative lateral walls of first slot, be equipped with first picture peg on the connecting portion, the relative both sides of first picture peg are equipped with first pivot, first pivot inserts and corresponds in the first shaft hole.

5. A clamping arrangement for a down-the-hole hammer as claimed in claim 4, wherein: the sliding part is of a rectangular plate-shaped structure, the connecting part is of a block structure in the shape of an isosceles trapezoid, one side inclined plane of the connecting part is the cutting surface, and the first inserting plate is connected to the other side inclined plane of the connecting part.

6. A clamping arrangement for a down-the-hole hammer as claimed in claim 5, wherein: the cutting surface is provided with metal teeth.

7. A clamping arrangement for a down-the-hole hammer as claimed in claim 6, wherein: the metal teeth are arranged in a plurality, and the metal teeth are uniformly distributed on the cutting face.

8. A clamping arrangement for a down-the-hole hammer as claimed in claim 6, wherein: the sliding part is fixed on the guide seat, and the sliding part is fixed on the guide seat.

9. A clamping device for a down-the-hole hammer as claimed in claim 1, wherein: the driving mechanism is an oil cylinder.

10. A down-the-hole hammer comprising a cylindrical barrel having a receiving cavity formed therein and a clamping device as claimed in any one of claims 1 to 9 for a down-the-hole hammer, the clamping device being located in the receiving cavity and the upper end of the drive mechanism being rotatably connected to the inner wall of the barrel.