CN217053551U - Combined type quartering hammer drill rod - Google Patents
Combined type quartering hammer drill rod Download PDFInfo
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- CN217053551U CN217053551U CN202220736779.3U CN202220736779U CN217053551U CN 217053551 U CN217053551 U CN 217053551U CN 202220736779 U CN202220736779 U CN 202220736779U CN 217053551 U CN217053551 U CN 217053551U
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- drill rod
- fixed
- wedge
- fixing hole
- rod head
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Abstract
The utility model discloses a combined type quartering hammer drill rod, include: the drill rod main body is provided with a fixing hole on the end surface; a drill rod head disposed on an end of the drill rod; one end of the drill rod head is provided with a plurality of elastic sheets which are arranged on the end face of the drill rod head at intervals along the radial direction of the drill rod head, the elastic sheets surround to form a sleeve, and the outer diameter of the sleeve is matched with the diameter of the fixing hole; the fixed wedge is arranged in the fixed hole, the fixed wedge is inserted into the sleeve, the fixed wedge is inserted into the fixed hole along with the drill rod head, and the fixed wedge props open the sleeve to enable the elastic sheet to be arranged between the side wall of the fixed hole and the fixed wedge. The utility model discloses a set up the sleeve pipe that the shell fragment on the drill rod head encloses that struts at the fixed wedge in the fixed orifices in the drill rod main part, fix the drill rod head in the drill rod main part, simplified the mounting means of drill rod head, improved the production efficiency of drill rod, reduced the manufacturing cost and the defective percentage of drill rod.
Description
Technical Field
The utility model relates to a drill rod technical field, concretely relates to combined type quartering hammer drill rod.
Background
The hydraulic breaking hammer is widely applied to industries such as mines, railways, highways, urban construction and the like, and a drill rod is an important part on the hydraulic breaking hammer. The drill rod used for the crushing operation of the engineering machinery excavator accessory crushing hammer in markets at home and abroad belongs to a common drill rod with a single structure, although different types such as a conical shape, a flat head shape and the like exist, and the practical problems of short service life, frequent replacement, poor user satisfaction and the like of the drill rod caused by the problems of high hardness, easy breakage, low hardness, no wear resistance, poor impact resistance, insufficient toughness, insufficient high-temperature deformation resistance, insufficient wear resistance, excessive wear and the like generally exist. Therefore, composite demolition hammer drill rods are widely used. The drill rod core part of the composite drill rod on the market is embedded in a hole of a drill rod main body through processes of cooling or pressing in and the like, a certain axial gap is inevitably formed between the top end of the drill rod core part and the hole wall of the drill rod main body, and when the drill rod impacts a broken object under the action of a piston, a certain degree of relative displacement is generated between the drill rod main body and the drill rod core part due to the existence of the axial gap, so that the transmission of kinetic energy and impact force between the drill rod main body and the drill rod core part is weakened, the impact force of the drill rod head is reduced, and the breaking efficiency is reduced.
Therefore, the drill rod of the hydraulic breaking hammer provided by the Chinese patent invention CN108517915A comprises a drill rod main body and a drill rod core part, wherein the drill rod main body and the drill rod core part are respectively made of steel materials with different materials, the front end of the drill rod main body is provided with a hole for accommodating the drill rod core part, the drill rod core part is placed in the hole, the top end of the drill rod core part is fixedly connected with the bottom of the hole of the drill rod main body, the drill rod core part and the drill rod main body are fixed into an integral structure through rolling, and the connection tightness between the drill rod core part and the drill rod main body is improved to a certain extent. However, the above scheme has the following disadvantages:
the drill rod core and the drill rod main body need to be fixed into an integral structure through rolling, on one hand, a special rolling device is needed in the rolling step, the step of drill rod assembly is increased, and the production cost of the drill rod is increased; on the other hand, the rolling may cause the core of the drill rod to deform to produce inferior products that affect the normal use of the drill rod.
In view of the above, there is an urgent need to improve the structure of the drill rod in the prior art to reduce the production cost of the drill rod and ensure the quality of the drill rod in the production process of the drill rod.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the drill rod main part and the drill rod core part of current drill rod are connected problem inconvenient, that manufacturing cost is high, that the defective percentage is high in the production process.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts as follows:
a compound demolition hammer shank, comprising:
the drill rod main body is provided with a fixing hole on the end surface;
a drill rod head disposed on an end of the drill rod; one end of the drill rod head is provided with a plurality of elastic sheets which are arranged on the end face of the drill rod head at intervals along the radial direction of the drill rod head, the elastic sheets surround to form a sleeve, and the outer diameter of the sleeve is matched with the diameter of the fixing hole;
the fixed wedge is arranged in the fixed hole, inserted into the sleeve and inserted into the fixed hole along with the drill rod head, and the fixed wedge props open the sleeve so that the elastic sheet is arranged between the side wall of the fixed hole and the fixed wedge.
In the above scheme, preferably, the fixed wedge is in a triangular column shape, the tip of the fixed wedge is arranged in the direction close to the opening of the fixed hole, and the number of the elastic pieces is 2.
In the above scheme, preferably, the fixed wedge is spherical, the bottom surface of the fixed hole is a hemispherical surface, and the shape and size of the fixed wedge are matched with those of the fixed hole;
the number of the elastic sheets is 2-20.
In the above scheme, preferably, the fixed wedge is conical, and the number of the elastic pieces is 2-20.
In the above aspect, preferably, the bit head includes:
the inserting part is inserted into the fixing hole; the elastic sheet is arranged on the inserting part;
and the tip end is arranged on the end surface of the inserting part and is abutted against the end surface of the drill rod main body, and the end surface of the tip end is matched with the end surface of the drill rod main body.
In the above aspect, preferably, a side surface of the shank main body and a side surface of the tip portion constitute a smooth tapered surface.
In the above aspect, preferably, the drill rod head is a mandrel inserted into the fixing hole, and one end of the mandrel is disposed to penetrate through an opening of the fixing hole.
In the above aspect, preferably, the spring pieces are symmetrically distributed along an axis of the drill rod head.
In the above aspect, preferably, the notches are arranged on the sleeve symmetrically in a radial direction thereof.
In the above aspect, preferably, the fixing wedge has a hardness greater than that of the sleeve.
In the above scheme, preferably, be equipped with a plurality of annular convex parts on the lateral wall of fixed orifices, be equipped with on the annular convex part certainly the central line of fixed orifices to first inclined plane and second inclined plane that the lateral wall slope of fixed orifices set up, first inclined plane sets up and is being close to one side of the hole bottom of fixed orifices, the second inclined plane sets up and is being close to open-ended one side of fixed orifices, first inclined plane with the contained angle of the central line of fixed orifices is greater than the second inclined plane with the contained angle of the central line of fixed orifices.
Compared with the prior art, the utility model provides a combined type quartering hammer drill rod, drill rod head cartridge set up in the fixed orifices, and the drill rod head inserts the fixed intracavity that the cartridge shell fragment encloses through setting up the fixed wedge in the fixed orifices, and its principle is similar with expansion bolts, fixes the drill rod head in the fixed orifices, and drill rod head and drill rod main part convenient assembling need not to use the rolling equipment of specialty, have reduced the manufacturing cost of drill rod and the defective percentage of drill rod.
Drawings
FIG. 1 is a schematic structural view of a drill rod of a combined breaking hammer according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a drill rod of a combined-type breaking hammer according to another embodiment of the present invention;
fig. 3 is a schematic structural view of a drill rod of a combined-type breaking hammer according to another embodiment of the present invention;
fig. 4 is a schematic structural view of a drill rod of a combined-type breaking hammer according to another embodiment of the present invention;
fig. 5 is a schematic structural view of a drill rod of a combined-type breaking hammer according to another embodiment of the present invention;
fig. 6 is a schematic structural view of a drill rod of a combined-type breaking hammer according to another embodiment of the present invention;
fig. 7 is an enlarged view of a point a in fig. 1.
The correspondence between the names and reference numbers of the components in fig. 1 to 7 is as follows:
the drill rod body 100, the drill rod head 200, the fixing wedge 300,
the fixing hole 110, the annular protrusion 120, the first inclined surface 130, the second inclined surface 140,
the combination of the spring 210, the sleeve 220,
an insertion portion 201 and a tip portion 202.
Detailed Description
The utility model provides a combined type quartering hammer drill rod struts the sleeve pipe that the shell fragment on the drill rod head encloses through the fixed wedge that sets up in the fixed orifices in the drill rod main part, fixes the drill rod head in the drill rod main part, has simplified the mounting means of drill rod head, has improved the production efficiency of drill rod, has reduced the manufacturing cost and the defective percentage of drill rod. The invention is described in detail below with reference to the drawings and the detailed description.
As shown in fig. 1 to 7, the present invention provides a combined breaking hammer drill rod, which comprises a drill rod main body 100 and a drill rod head 200.
The drill rod main body 1000 is provided with a fixing hole 110 on the end face, the side wall of the fixing hole 110 is provided with a plurality of annular convex portions 120, the annular convex portions 120 are provided with a first inclined surface 130 and a second inclined surface 140 which are obliquely arranged from the center line of the fixing hole 110 to the side wall of the fixing hole 110, the first inclined surface 130 is arranged on one side close to the hole bottom of the fixing hole 110, the second inclined surface 140 is arranged on one side close to the opening of the fixing hole 110, and the included angle between the first inclined surface 130 and the center line of the fixing hole 110 is larger than that between the second inclined surface 140 and the center line of the fixing hole 110. The annular projection 12 limits the position of the drill rod head 12 inserted into the fixing hole 110.
One end of the drill rod head 200 is provided with a plurality of spring plates 210, the spring plates 21 are arranged on the end surface of the drill rod head 200 at intervals along the radial direction of the drill rod head 200, the spring plates 21 surround a sleeve 22, and the outer diameter of the sleeve 22 is matched with the diameter of the fixing hole 110. The spring plates 21 are symmetrically distributed along the axis of the drill rod head 200.
The fixing hole 110 is further provided with a fixing wedge 300, the fixing wedge 300 is inserted into the sleeve 22, and the fixing wedge 3 gradually expands the sleeve 22 with the increase of the length of the drill rod head 200 inserted into the fixing hole 110, so that the elastic sheet 21 is arranged in the gap between the side wall of the fixing hole 110 and the fixing wedge 300. The fixing wedge 300 has a hardness greater than that of the elastic piece 21.
In an embodiment of the present invention, the drill rod head 200 includes an insertion portion 201 and a tip portion 202, the insertion portion 201 is inserted into the fixing hole; the elastic piece 21 is arranged on the insertion portion 201. The tip 202 is provided on the end surface of the insertion portion 201, the tip 202 abuts against the end surface of the drill rod body 100, and the end surface of the tip 202 is fitted to the end surface of the drill rod body 100. The side surface of the shank body 100 and the side surface of the tip portion 202 constitute a smooth tapered surface.
In another embodiment of the present invention, the drill rod head 200 is a core rod inserted into the fixing hole 110, and one end of the core rod is disposed through the opening of the fixing hole 110.
In another embodiment of the present invention, the fixing wedge 300 is in a triangular prism shape, the tip of the fixing wedge 300 is disposed in the direction of the opening close to the fixing hole 110, and the number of the elastic pieces 210 is 2.
In another embodiment of the present invention, the fixed wedge 300 is spherical, the bottom surface of the fixed hole 110 is a hemispherical surface, and the shape and size of the fixed wedge 300 are matched with the shape and size of the fixed hole 110; the number of the elastic pieces 210 is 2-20.
In another embodiment of the present invention, the fixed wedge 300 is conical, and the number of the elastic pieces 210 is 2 to 20.
The production method of the utility model is as follows:
a fixing hole 110 is drilled in an end surface of the shank body 100, and the fixing wedge 300 is placed in the fixing hole 110 such that a tip of the fixing wedge 300 is disposed toward an opening of the fixing hole 110. The end of the drill rod head 200, which is provided with the spring 21, is inserted into the fixing hole 110, the tip of the fixing wedge 300 is inserted into the cavity of the sleeve 220 enclosed by the spring 21, the drill rod head 200 is hammered into the fixing hole 110 by using a tool such as a hammer, the fixing wedge 300 props open the side wall of the sleeve 220 as the length of the drill rod head 200 inserted into the fixing hole 110 increases, the spring 21 is inserted between the fixing wedge 300 and the side wall of the fixing hole 110, the spring 21 is clamped by the fixing wedge 300 and the side wall of the fixing hole 110, and the drill rod head 200 is fixed on the drill rod main body.
Compared with the prior art, the utility model provides a combined type quartering hammer drill rod, including the drill rod main part and set up the drill rod head in the drill rod main part, be equipped with the fixed orifices in the drill rod main part, be equipped with the fixed wedge in the fixed orifices, strut the shell fragment on the drill rod head through the fixed wedge and make the shell fragment insert the clearance of fixed orifices and fixed wedge, fix the drill rod head in the drill rod main part. The drill rod main body and the drill rod head are simple in assembly mode, tools such as rolling equipment and the like are needed, the production cost and the defective rate of the drill rod are reduced, and the production efficiency of the drill rod is improved.
The utility model discloses in, the fixed wedge is triangular prism shape, globular or coniform, satisfies the use needs of different quartering hammers. According to the fact that the fixed wedge is triangular column-shaped, spherical or conical, the number of the elastic sheets is two or 2-20, and the elastic sheets are matched with the shape of the fixed wedge, so that the tightness of connection of the elastic sheets, the fixed wedge and the fixed hole is improved, and the service life of the drill rod is prolonged.
The utility model discloses in, the drill rod head includes cartridge portion and pointed end, and socket portion inserts the fixed orifices setting, and the end cap of pointed end and the terminal surface butt of drill rod main part make things convenient for the drill rod main part to conduct the drill rod head with the impact force better, crushing efficiency when improving the broken object of drill rod.
The utility model discloses in, the drill rod head is for inserting the plug in the fixed orifices, and drill rod head and drill rod body convenient assembling have improved the production efficiency of drill rod.
The present invention is not limited to the above-mentioned best mode, and any person should learn the structural change made under the teaching of the present invention, all with the present invention has the same or similar technical solution, all fall into the protection scope of the present invention.
Claims (10)
1. A composite demolition hammer drill rod, comprising:
the drill rod main body is provided with a fixing hole on the end surface;
a drill rod head disposed on an end of the drill rod; one end of the drill rod head is provided with a plurality of elastic sheets which are arranged on the end surface of the drill rod head at intervals along the radial direction of the drill rod head, the elastic sheets surround a sleeve, and the outer diameter of the sleeve is matched with the diameter of the fixing hole;
the fixed wedge is arranged in the fixed hole, the fixed wedge is inserted into the sleeve, the fixed wedge is inserted into the fixed hole along with the drill rod head, and the fixed wedge props open the sleeve to enable the elastic sheet to be arranged between the side wall of the fixed hole and the fixed wedge.
2. The composite demolition hammer drill shank according to claim 1, wherein the fastening wedge is in the shape of a triangular prism, the tip of the fastening wedge is disposed in a direction close to the opening of the fastening hole, and the number of the resilient pieces is 2.
3. The composite hammer drill rod of claim 1, wherein the fixing wedge is spherical, the bottom surface of the fixing hole is a semi-spherical surface, and the shape and size of the fixing wedge are matched with those of the fixing hole;
the number of the elastic pieces is 2-20.
4. The composite breaking hammer drill rod according to claim 1, wherein the fixing wedge is conical, and the number of the spring pieces is 2-20.
5. The composite demolition hammer drill rod of claim 1, wherein the drill rod head comprises:
the inserting part is inserted into the fixing hole; the elastic sheet is arranged on the inserting part;
and the tip end is arranged on the end surface of the inserting part, the tip end is abutted against the end surface of the drill rod main body, and the end surface of the tip end is matched with the end surface of the drill rod main body.
6. The composite demolition hammer drill rod according to claim 5, wherein the sides of the drill rod body and the sides of the tip end constitute a smooth conical surface.
7. The composite demolition hammer drill shank according to claim 1 wherein the drill shank head is a mandrel inserted into the fixed bore, one end of the mandrel being disposed through an opening of the fixed bore.
8. The composite demolition hammer drill shank according to claim 1, wherein the spring blades are symmetrically distributed along an axis of the drill shank head.
9. The composite demolition hammer drill shank according to claim 1, wherein the fixation wedge has a hardness greater than a hardness of the spring plate.
10. The composite breaking hammer drill rod according to claim 1, wherein a plurality of annular protrusions are arranged on the side wall of the fixing hole, a first inclined surface and a second inclined surface are arranged on the annular protrusions, the first inclined surface and the second inclined surface are inclined from the center line of the fixing hole to the side wall of the fixing hole, the first inclined surface is arranged on one side close to the bottom of the fixing hole, the second inclined surface is arranged on one side close to the opening of the fixing hole, and the included angle between the first inclined surface and the center line of the fixing hole is larger than the included angle between the second inclined surface and the center line of the fixing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220736779.3U CN217053551U (en) | 2022-03-31 | 2022-03-31 | Combined type quartering hammer drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220736779.3U CN217053551U (en) | 2022-03-31 | 2022-03-31 | Combined type quartering hammer drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217053551U true CN217053551U (en) | 2022-07-26 |
Family
ID=82467898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220736779.3U Active CN217053551U (en) | 2022-03-31 | 2022-03-31 | Combined type quartering hammer drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217053551U (en) |
-
2022
- 2022-03-31 CN CN202220736779.3U patent/CN217053551U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |