TWM566261U - Connecting device and pneumatic hammer structure using same - Google Patents

Abstract

The present invention provides a connecting device which is applied to a pneumatic hammer structure, the pneumatic hammer structure has a casing, and the casing has two through grooves. The connecting device comprises two positioning slots, respectively, which are respectively recessed on the surface of the connecting device and are received in the outer casing to correspond to the positions of the two through slots for fixing the connecting device and the outer casing. The present invention provides lateral interference positioning of the connecting device and the outer casing of the pneumatic hammer structure through the arrangement of the positioning groove and the through groove, thereby effectively dispersing the load of the connecting device and ensuring that the pneumatic hammer structure is not easily damaged during the application process.

Description

Connecting device and pneumatic hammer structure using same

The present invention relates to a connecting device and a pneumatic hammer structure using the same, and particularly to a connecting device that uses a positioning groove to provide a fixed function and a pneumatic hammer structure using the same.

The technology involved in the present invention is a large pneumatic hammer structure for drilling rock drilling or piling engineering. Compared with the pneumatic hammers used in general home decoration and machine assembly, the working environment of such large pneumatic hammers is mainly underground rock formations.

Another difference between large pneumatic hammers and general pneumatic hammers is that large pneumatic hammers not only need to provide air passages to provide pneumatic impulses, but also have to manage to discharge mud, gravel and other waste generated during drilling. Congenital structural constraints make large pneumatic hammers more fragile. However, due to the use characteristics, structural strength is the primary requirement for large pneumatic hammers.

The existing large-scale pneumatic hammer system firstly connects the pneumatic hammer body with a connecting device, and then provides an outer casing for protecting the outer ring of the pneumatic hammer body. Since the connecting device and the body of the pneumatic hammer have various specifications, the two are mostly screwed to facilitate replacement. However, because the weight of the pneumatic hammer body and the outer casing is extremely heavy, the above-mentioned screwing manner will cause a large tensile stress on the threaded portion of the connecting device.

In addition, based on the poor working environment and unpredictable force of the drilling and piling, the connecting device is easily damaged accidentally during the construction process, which causes the pneumatic hammer and the outer casing to be separated from the connecting device at the ground, which makes the subsequent after-care work very difficult.

Therefore, in order to overcome the deficiencies of the prior art, the present invention proposes a connecting device and a pneumatic hammer structure using the same, by providing a positioning groove to fix the connecting device and the body and the outer casing of the pneumatic hammer, thereby preventing the pneumatic hammer structure because Damaged and detached due to stress load.

According to an embodiment of the present invention, a connecting device is provided, the connecting device being applied to a pneumatic hammer structure, the pneumatic hammer structure having an outer casing, and the outer casing having a through groove. The connecting device comprises at least one surface, the surface is concavely provided with a positioning groove, and the positioning groove is received in the outer casing corresponding to the position of the groove so that the connecting device and the outer casing are penetrated and fixed.

Compared with the existing pneumatic hammer structure, the present embodiment additionally provides lateral interference between the connecting device and the outer casing, which can not only effectively distribute the load of the connecting device, but also ensure that the connecting device and the pneumatic hammer body and the outer casing do not fall off due to overload. .

In an embodiment, the connecting device may further comprise a connecting portion, and the aforementioned surface is located at the connecting portion. Further, the connecting portion may be a polygonal cylinder.

The positioning groove may be a concave curved surface to facilitate the insertion and fixation of the pin at an arbitrary angle and to avoid stress concentration of the pin.

In an embodiment, the number of the through grooves and the surface may be two or more. In this embodiment, the two through grooves may be located on opposite sides of the housing, and the two surfaces are also located on opposite sides of the connecting device. That is, the connecting device may include two positioning grooves and penetrate through the two through grooves of the outer casing.

In an embodiment, the attachment means may further comprise a base that is received within the outer casing and abuts against the inner wall of the outer casing to ensure that the attachment means and the outer casing are free of relative radial displacement.

The connecting device may further comprise a connecting groove, the engaging groove is recessed on the surface of the connecting device and exposes the outer casing for engaging an external driving source (such as a strange hand). In this embodiment, the surface can likewise be located on the joint.

According to an embodiment of the present invention, there is provided a pneumatic hammer structure comprising the connecting device, the outer casing and the wearing pin of any of the preceding embodiments. The connection relationship between the connecting device and the outer casing is as described in the previous embodiment. In the embodiment, the piercing pin is inserted through the through groove and the positioning groove to complete the limit fixing relationship between the connecting device and the outer casing.

In the embodiment in which the number of the through grooves and the number of the surfaces are two, the number of the piercing pins included in the pneumatic hammer structure is two, and each of the piercing pins respectively penetrates through the set of through grooves and the positioning grooves. The effect of the present embodiment regarding the connection device has been as described in the foregoing embodiments, and therefore will not be repeated here.

In order to fully understand the purpose, features and effects of the present invention, the present invention will be described in detail by the following specific embodiments and the accompanying drawings.

Referring to FIG. 1A, FIG. 1B and FIG. 1C, the connecting device 200 has at least one surface 201, and the surface 201 is recessed with a positioning groove 201A. In FIGS. 1A and 1B, the connecting device 200 has six surfaces 201, and the number of the positioning grooves 201A is two, and is recessed on two of the surfaces 201 of the connecting device 200. In the present embodiment, the connecting device 200 has the connecting portion 210, and the six surfaces 201 are different faces on the connecting portion 210. Of course, depending on the design, the connecting device 200 can also include more surfaces 201 and positioning slots 201A.

Referring again to FIGS. 2 and 3, the outer casing 300 has two through grooves 310, and the connecting device 200 can be partially housed inside the outer casing 300, and a portion of the connecting portion 210 is exposed by the connecting hole 301 at the top of the outer casing 300.

In this state, the two positioning slots 201A of the connecting device 200 are hidden in the outer casing 300, and corresponding to the position of the through slot 310 of the outer casing 300, the external components such as the wearing pin 400 can be penetrated together, thereby fixing the connecting device. 200 and outer casing 300.

In particular, since the single set of positioning grooves 201A and the through grooves 310 can exert a restraining effect on the connecting device 200 and the outer casing 300, the present embodiment does not limit the positioning groove 201A and the through groove 310 to two or more. .

In addition, the present embodiment is intended to explain the fixed relationship between the connection device 200 and the outer casing 300. The connection portion 210 is only necessary to explain the relative positions of the connection device 200 and the outer casing 300. Therefore, the connection portion 210 is not necessarily limited to the embodiment.

In the present embodiment, the connecting portion 210 is a hexagonal cylinder, but this configuration is not a necessary condition for the connection device 200. In other embodiments, the connecting portion 210 can also be other polygonal cylinders. In order to facilitate the insertion of the insertion pin 400 into the positioning groove 201A and the through groove 310, the positioning groove 201A can be designed as a concave curved surface, and the through groove 310 is a cylindrical through hole.

In addition, the connecting device 200 can include a base 220, and the base 220 can exert a radial restraining effect of the connecting device 200 inside the outer casing 300 to ensure that the connecting portion 210 and the connecting hole 301 remain coaxial to avoid bending moment due to relative displacement. .

4, in the state of FIG. 3, the assembly portion 230 at the bottom end of the connection device 200 is suspended in the outer casing 300. The assembly 230 functions to connect the body 600 of the pneumatic hammer. The body 600 can be inserted through the bottom of the outer casing 300, and the top of the body 600 includes the assembly end 610. The assembly end 610 and the assembly portion 230 can be screwed correspondingly. Of course, the group interface 610 and the assembly portion 230 can also be in different combinations.

The main difference between the above embodiment and the existing large-sized pneumatic hammer is that the outer casing 300 of the pneumatic hammer is not fixed to the body 600 first, and then suspended together with the body 600 to the assembly portion 230 of the connecting device 200, but the wearing pin 400 is used. The groove 310 is directly fixed to the positioning groove 201A of the connecting device 200.

Through the above arrangement, the load applied to the connecting device 200 by the outer casing 300 can be transferred from the assembling portion 230 to the positioning groove 201A, so that the weight of the outer casing 300 is countered by the pulling force provided by the connecting device 200, thereby effectively reducing the stress of the connecting portion 230. load.

Referring to FIG. 5 and FIG. 6 in conjunction with FIGS. 1 and 2, the present invention can also be implemented in the overall manner of the pneumatic hammer structure 100. For example, the pneumatic hammer structure 100 can be coupled to the drive rod 500 of the external drive source, and one side (bottom) of the drive rod 500 has two engagement slots 510. In contrast, the connection device 200 can have two engagement slots. 201B can also be disposed on the surface 201 of the connecting portion 210. The orientation of the engaging groove 201B and the positioning groove 201A at the connecting portion 210 may be the same or different. The fitting groove 510 of the driving rod 500 and the engaging groove 201B of the connecting device 200 can be fixed in the same manner as the positioning groove 201A and the through groove 310. That is, the shape of the connecting portion 210 of the connecting device 200 can match the shape of the inner wall of the bottom of the driving rod 500, and the positions of the engaging groove 201B and the fitting groove 510 also correspond to each other, and can be fixed by the wearing method.

The top of the driving rod 500 is used to connect a pneumatic device (usually a machine such as a strange hand), and air is introduced from the vent hole 202 of the connecting device 200, and then injected into the body 600 via the assembly portion 230 and the assembly end 610. When the pneumatic hammer structure 100 is driven, the drive rod 500 is rotatably drilled into the ground while the rock body is struck by the gas-driven end body 600. In the above process, the outer casing 300 and the body 600 are indirectly driven by the driving rod 500 through the connecting device 200.

With this arrangement, the assembly 230 of the connecting device 200 only has to withstand the torque fed back by the assembly segment 610 and the positive impact force from the formation, while the gravity of the outer casing 300 and the circumferential torque from the outer formation are transmitted to the connection. Device 200 and drive rod 500.

Therefore, during the application of the pneumatic hammer structure 100, the stress distribution of the connecting device 200 can be effectively averaged, and the damage of the local load overload is not easily caused.

The present invention has been described in the above preferred embodiments, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the present invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be within the scope of the present invention. Therefore, the scope of protection of this new type is subject to the definition of the scope of patent application.

100‧‧‧Pneumatic hammer structure
200‧‧‧Connecting device
201‧‧‧ surface
201A‧‧‧ positioning slot
201B‧‧‧ joint slot
202‧‧‧Ventinel
210‧‧‧Connecting Department
220‧‧‧Base
230‧‧‧Team
300‧‧‧ Shell
301‧‧‧connection hole
310‧‧‧ slot
400‧‧‧ wearing pins
500‧‧‧ drive rod
510‧‧‧ fitting slot
600‧‧‧ Ontology
610‧‧‧Groups

1A is a front view of the connecting device of FIG. 1A; FIG. 1C is a cross-sectional view of the connecting device of FIG. 1B; FIG. 2 is a cross-sectional view of the connecting device of FIG. Figure 3 is a schematic view showing the connection of the pneumatic hammer structure of Figure 2; Figure 4 is a schematic view of the body of the pneumatic hammer structure of Figure 2; Figure 5 is a partial cross-sectional view of the pneumatic hammer structure of Figure 2. Figure; and Figure 6 is a schematic view of the overall assembly of the pneumatic hammer structure.

Claims (10)

A connecting device is applied to a pneumatic hammer structure having a casing having at least a uniform groove, the connecting device comprising: at least one surface having a positioning groove recessed therein, the positioning groove being received in the casing The inner portion is corresponding to the position of the groove so that the connecting device and the outer casing are penetrated and fixed. The connecting device of claim 1, further comprising: a connecting portion, and the surface is located at the connecting portion. The connecting device of claim 2, wherein the connecting portion is a polygonal cylinder. The connecting device of claim 1, wherein the positioning groove is a concave curved surface. The connecting device according to claim 1, wherein the number of the through grooves and the surface is two or more. The connecting device of claim 5, wherein the two slots are located on opposite sides of the housing, and wherein the surface is located on an opposite side of the connecting device. The connecting device of claim 1, further comprising: a base housed in the outer casing, the base abutting against an inner wall of the outer casing. The connecting device according to claim 1 or 2, further comprising: a connecting groove recessed on the surface, and the engaging groove is exposed to the outer casing for engaging a driving source. A pneumatic hammer structure comprising: the connecting device according to any one of claims 1 to 8; the outer casing, the ring being disposed on the outer layer of the connecting device; and a piercing pin extending through the through groove and the positioning groove. A pneumatic hammer structure comprising: the connecting device according to claim 5 or 6; the outer casing is disposed on an outer layer of the connecting device; and two wearing pins, each of the through pins respectively penetrating through the through slot and the The positioning slot.