CN219280803U - Clamping device of spiral drill bit - Google Patents

Abstract

The application discloses screw bit's clamping device belongs to fixture technical field for provide a screw bit clamping device that easy dismounting and adaptation flexibility are high, including pneumatic cylinder and shell, the shell with fixedly connected with connection pad between the pneumatic cylinder, the lateral wall swing joint of pneumatic cylinder has the telescopic link, the tip swing joint of telescopic link has a plurality of swing arms, every the middle part of swing arm with shell sliding connection, another tip fixedly connected with splint, a plurality of splint are close to each other and are used for pressing from both sides tight screw bit. The utility model discloses a design is realized the centre gripping by hydraulic system driven splint structure, does not need loaded down with trivial details dismouting connecting piece, has simplified the step of installation and dismantlement auger bit, and the interval between a plurality of splint can freely change, can adapt the auger bit of multiple different models, has better configuration flexibility.

Description

Clamping device of spiral drill bit

Technical Field

The application relates to the technical field of clamping mechanisms, in particular to a clamping device of a spiral drill bit.

Background

At present, except carrying out engineering excavation work, the excavator can also be repacked according to actual demand, for example, the spiral drill bit structure is installed at the tip of the mechanical arm and drilling operation can be carried out, the spiral drill bit needs to be connected with a driving device when the spiral drill bit wants to realize rotation, the existing connection mode adopts connecting pieces such as bolts and the like, although stability is better, the disassembly and assembly operation is more troublesome, and the corresponding point position of a connecting hole is determined, so that only the spiral drill bit with the matched model can be connected with the driving device.

Disclosure of Invention

An object of the present application is to provide a spiral drill bit clamping device that easy dismounting and adaptation flexibility are high.

To achieve the above object, the present application provides a clamping device for a screw drill: including pneumatic cylinder and shell, the shell with fixedly connected with connection pad between the pneumatic cylinder, the lateral wall swing joint of pneumatic cylinder has the telescopic link, the tip swing joint of telescopic link has a plurality of swing arms, every the middle part of swing arm with shell sliding connection, another tip fixedly connected with splint, a plurality of splint are close to each other and are used for pressing from both sides tight auger bit, even the link size of auger bit is different also can be connected with it.

Preferably, the side wall of the hydraulic cylinder is provided with a plurality of extending cylinders which are distributed around the shaft at equal intervals, each extending cylinder is communicated with the inside of the hydraulic cylinder, and the top of the hydraulic cylinder is provided with a butt joint end which is used for being connected with a hydraulic oil pipeline to acquire power in a hydraulic system of the excavator.

Preferably, one end of the telescopic rod extends into the extension cylinder barrel and is fixedly connected with a piston, and the other end of the telescopic rod is positioned outside the extension cylinder barrel and is fixedly connected with a traction handle for transmitting power.

Preferably, one end of the swing arm, which is close to the telescopic rod, is rotatably connected with the traction handle through a hinge shaft, and the swing arm has swing characteristics of angle transformation.

Preferably, the inner wall of the housing is provided with sliding grooves with the number and positions corresponding to those of the swing arms, the cross section of each sliding groove is T-shaped, the middle part of each swing arm is bent, and sliding shafts are arranged on symmetrical sides of the middle part and are suitable for being embedded in the sliding grooves to form sliding pairs, so that the swing arms 4 have the freedom degree of up-down movement.

Preferably, the inner wall of the clamping plate is fixedly connected with a soft pad for limiting the relative rotation of the spiral drill bit, and the upper surface or the lower surface of the clamping plate is fixedly connected with a clamp for limiting the up-and-down movement of the spiral drill bit.

Preferably, the connecting disc is fixedly connected with the side face of the hydraulic cylinder, the connecting disc is fixedly connected with the upper end face of the shell, and the relative position and angle of the shell and the hydraulic cylinder are limited.

Preferably, the center of the connecting disc is provided with a through hole, the hydraulic cylinder is located in the through hole, and the connecting disc is provided with a plurality of equally-distributed connecting piece holes at positions close to the edge, so that connecting pieces such as bolts penetrate through and fixedly connect the whole clamping device with the output end of the driving mechanism.

Compared with the prior art, the beneficial effect of this application lies in:

(1) Clamping is realized by designing a clamping plate structure driven by a hydraulic system, the connecting piece is not required to be assembled and disassembled in a complicated way, the steps of installing and disassembling the spiral drill bit are simplified, the space between a plurality of clamping plates can be freely changed, the spiral drill bit with different types can be adapted, and the spiral drill bit has better configuration flexibility;

(2) Through setting up soft pad at the inner wall of splint, set up the clamp at the upper and lower surface of splint, the spiral drill is rotated and the drunkenness all is very good restriction from top to bottom after being pressed from both sides tightly, has higher connection stability.

Drawings

FIG. 1 is a schematic perspective view of a clamping device of the screw drill;

FIG. 2 is a schematic perspective view of the clamping device of the auger bit shown in FIG. 1 with the connecting disc removed;

FIG. 3 is a schematic perspective view of the holding device of the auger bit with the housing removed from FIG. 2;

FIG. 4 is a schematic diagram of the connection structure of the clamping plate and the swing arm of the clamping device of the screw drill;

FIG. 5 is a perspective cross-sectional view of the hydraulic rod and telescoping rod of the holding device of the auger bit;

fig. 6 is a perspective structural sectional view of a housing and a land of the holding device of the screw bit.

In the figure: 1. a housing; 101. a chute; 2. a clamping plate; 201. a soft pad; 202. a clamp; 3. a telescopic rod; 301. a pulling handle; 302. a piston; 4. swing arms; 401. a hinge shaft; 402. a slide shaft; 5. a hydraulic cylinder; 501. a butt joint end; 502. an extension cylinder; 6. a connecting disc; 601. a through hole; 602. and a connector hole.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

The clamping device of the spiral drill bit shown in fig. 1-6 comprises a hydraulic cylinder 5 and a shell 1, wherein a connecting disc 6 is fixedly connected between the shell 1 and the hydraulic cylinder 5, specifically, a through hole 601 is formed in the center of the connecting disc 6, the hydraulic cylinder 5 is positioned in the through hole 601, the side surface of the hydraulic cylinder 5 is fixedly connected with the inner wall of the through hole 601 of the connecting disc 6, the connecting disc 6 is fixedly connected with the upper end surface of the shell 1, welding is usually adopted, a plurality of equally-spaced connecting piece holes 602 are formed in the position, close to the edge, of the connecting disc 6, and a connecting piece such as a bolt penetrates through the connecting piece to fixedly connect the whole clamping device with the output end of a driving mechanism of the drill bit.

The lateral wall swing joint of pneumatic cylinder 5 has telescopic link 3, telescopic link 3 and the concrete connected mode of pneumatic cylinder 5 does, the lateral wall of pneumatic cylinder 5 has a plurality of extension cylinder 502 of arranging around the axle equidistance, every extension cylinder 502 all communicates with the inside of pneumatic cylinder 5, hydraulic oil can pass in and out in the extension cylinder 502, the one end of telescopic link 3 stretches into in the extension cylinder 502 and fixedly connected with piston 302, have fine leakproofness between the inner wall of piston 302 and extension cylinder 502, can bear the great pressure hydraulic oil effect down and hinder hydraulic oil to reveal, the top of pneumatic cylinder 5 has butt joint end 501 for connect the hydraulic oil pipeline, thereby obtain hydraulic pressure of hydraulic oil system.

The other end swing arm 4 of telescopic link 3 swing joint has a plurality of swing arms 4, the other end of telescopic link 3 is located and extends outside cylinder 502 and fixedly connected with and pulls handle 301, the one end that swing arm 4 is close to telescopic link 3 rotates with pulling handle 301 through articulated shaft 401 and is connected, that is, swing arm 4 can swing for telescopic link 3, the middle part and the shell 1 sliding connection of every swing arm 4, concrete realization structure is that the inner wall of shell 1 has seted up spout 101 that quantity and position all correspond with swing arm 4, the cross section of spout 101 is seted up to T shape in this embodiment, the middle part of swing arm 4 is buckled, and be provided with slide shaft 402 at the symmetry side at middle part, be suitable for embedding in spout 101 and constitute the slip pair, the distance party of swing arm 4 middle part position for the central axis is restricted like this, when swing arm 4's upper end distance changes, the lower extreme distance relative to the central axis also can change, and then realize clamp and release action.

The other end fixedly connected with splint 2 of swing arm 4, a plurality of splint 2 are close to each other and are used for pressing from both sides tight auger bit, in order to improve the stability after pressing from both sides tight, can be at splint 2's inner wall fixed connection soft pad 201 for with the side soft contact of auger bit, increase steering friction prevents the rotation of auger bit, splint 2's upper surface or lower surface fixed connection have clamp 202 for with the tip hard contact of auger bit, prevent the spiral rotation from jumping from top to bottom.

Working principle: during installation, the connecting disc 6 is fixedly connected with the rotation driving output end of the end part of the mechanical arm of the excavator by using a connecting piece such as a bolt, then the hydraulic cylinder 5 is connected with a hydraulic system of the excavator through the butt joint end 501, then the clamping plates 2 in an open state are close to the upper end of the spiral drill bit, the upper end of the spiral drill bit is positioned between the clamping plates 2 which surround in a ring shape, finally hydraulic oil in the hydraulic cylinder 5 is increased, hydraulic pressure is increased, the piston 302 is pushed by the extension cylinder 502, all the clamping plates 2 are mutually close to each other under the linkage action of the telescopic rod 3 and the swing arm 4 until the spiral drill bit is completely clamped, and in the embodiment, the clamping plates 2 are arc-shaped, and a circle is formed after the clamping plates 2 are completely clamped; the inner and outer sides of the clamping plate 2 can be flat, and a polygon is formed after clamping, so that the clamping effect is good.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims (8)

1. A clamping device for a helical drill, comprising: including pneumatic cylinder (5) and shell (1), shell (1) with fixedly connected with connection pad (6) between pneumatic cylinder (5), lateral wall swing joint of pneumatic cylinder (5) has telescopic link (3), the tip swing joint of telescopic link (3) has a plurality of swing arms (4), every the middle part of swing arm (4) with shell (1) sliding connection, another tip fixedly connected with splint (2), a plurality of splint (2) are close to each other and are used for pressing from both sides tight auger bit.

2. The screw drill clamping device of claim 1, wherein: the lateral wall of pneumatic cylinder (5) has a plurality of extension cylinder (502) of arranging around the axle equidistance, every extension cylinder (502) all with the inside intercommunication of pneumatic cylinder (5), the top of pneumatic cylinder (5) has butt joint end (501) for connect the hydraulic oil pipeline.

3. The screw drill clamping device of claim 2, wherein: one end of the telescopic rod (3) stretches into the extension cylinder barrel (502) and is fixedly connected with the piston (302), and the other end of the telescopic rod is positioned outside the extension cylinder barrel (502) and is fixedly connected with the traction handle (301).

4. A holding device for a screw drill according to claim 3, wherein: one end of the swing arm (4) close to the telescopic rod (3) is rotatably connected with the traction handle (301) through a hinge shaft (401).

5. The screw drill clamping device of claim 4, wherein: the sliding pair is characterized in that sliding grooves (101) which are corresponding to the swing arms (4) in number and position are formed in the inner wall of the shell (1), the cross section of each sliding groove (101) is T-shaped, the middle part of each swing arm (4) is bent, sliding shafts (402) are arranged on symmetrical sides of the middle part, and the sliding pair is suitable for being embedded in each sliding groove (101).

6. A holding device for a screw drill according to any one of claims 1 to 5, wherein: the inner wall of splint (2) fixedly connected with soft pad (201), the upper surface or the lower surface fixedly connected with clamp (202) of splint (2).

7. The screw drill clamping device of claim 6, wherein: the connecting disc (6) is fixedly connected with the side face of the hydraulic cylinder (5), and the connecting disc (6) is fixedly connected with the upper end face of the shell (1).

8. The screw drill clamping device of claim 7, wherein: the center of the connecting disc (6) is provided with a through hole (601), the hydraulic cylinder (5) is positioned in the through hole (601), and the connecting disc (6) is provided with a plurality of equally-distributed connecting piece holes (602) at positions close to the edge.

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