CN112900534A - Drill rod of breaking hammer - Google Patents
Drill rod of breaking hammer Download PDFInfo
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- CN112900534A CN112900534A CN202110168194.6A CN202110168194A CN112900534A CN 112900534 A CN112900534 A CN 112900534A CN 202110168194 A CN202110168194 A CN 202110168194A CN 112900534 A CN112900534 A CN 112900534A
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- rod
- crushing
- extrusion
- shock absorption
- damping
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
- E02F5/305—Arrangements for breaking-up hard ground
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a breaking hammer drill rod, which comprises a shock absorption rod, a breaking rod and a connecting piece, wherein the shock absorption rod is connected with the breaking rod through a connecting piece; wherein the lower end of the damping rod is provided with a damping part, and the upper end of the crushing rod is provided with a transmission part; the damping part comprises damping cylinders which are coaxially sleeved and arranged, and the transmission part comprises transmission cylinders which are coaxially sleeved and arranged; when the shock absorption rod and the crushing rod are connected end to end and spliced, the shock absorption cylinders and the transmission cylinders are arranged at intervals and are sleeved and spliced with each other to form the shock absorption area; a crushing channel is formed in the crushing rod, an extrusion rod is arranged in the crushing channel in a sliding mode, and the length of the extrusion rod is larger than that of the crushing channel; when the damping rod and the crushing rod are in end-to-end tight abutting, the extrusion block abuts against the upper end of the extrusion rod and pushes the lower end of the extrusion rod out of the crushing surface; by improving the structure of the drill rod, the lateral reverse shock transmitted to the machine body by the drill rod is effectively weakened, so that the machine body is effectively protected; meanwhile, the improved drill rod has a better crushing effect.
Description
Technical Field
The invention relates to the field of breaking hammers, in particular to a drill rod used on a breaking hammer.
Background
The breaking hammer is also called a breaker, a lithotripter, a stone breaking pick and the like, is one of important operation accessories of the excavator, and can also be arranged on a loader for breaking operation; the machine comprises a machine body, a hydraulic driving system, a piston and a detachable and replaceable drill rod, wherein the breaking hammer uses hydraulic pressure as power to drive the piston to reciprocate when working, the piston impacts the drill rod at high speed during stroke, impact force is transmitted through the drill rod, and then solid such as ore, concrete and the like are broken.
Although the machine can effectively break the hard surface, the machine has a plurality of points when in use, and the drill rod and the power mechanism can be damaged by carelessness; such as: when the crushing operation is carried out, the drill rod needs to be vertically acted on the crushing surface as much as possible, so that the drill rod is prevented from being deflected laterally; because the deflection easily causes a larger torque at the joint of the drill rod and the machine body, the joint is loosened, deformed and even falls off; for another example, the long-time impact cannot be continuously performed, the target object can only be gradually broken from the edge when the target object is large, and the like; these considerations are to avoid the drill rod from continuously receiving the lateral reaction force of the ground in the continuous working process, so that the lateral reaction shock received by the drill rod is intensified to cause the vibration and abrasion of the acceleration machine body; therefore, certain working experience is required in actual operation; in summary, the conventional breaking hammer has high operation difficulty, takes more attention during use, and needs frequent maintenance after use, which brings inconvenience to the breaking operation.
Disclosure of Invention
Aiming at the problems, the invention provides a breaking hammer drill rod, which effectively weakens the lateral reverse shock transmitted to a machine body by the drill rod by improving the structure of the drill rod, thereby effectively protecting the machine body; meanwhile, the improved drill rod has a better crushing effect.
A breaking hammer drill rod comprises a shock absorption rod, a breaking rod and a connecting piece; under the constraint of the connecting piece, the shock absorption rod and the crushing rod can be detachably spliced end to end and can relatively move in a certain range of the axis of the drill rod;
the upper end of the shock absorption rod is provided with a connector which can be detachably assembled with the machine body, and the lower end of the shock absorption rod is provided with a shock absorption part;
the upper end of the crushing rod is provided with a transmission part matched with the damping part, and the transmission part and the damping part are combined to form a damping area of the drill rod; the lower end of the crushing rod is provided with a crushing head, and the surface of the crushing head, which is in contact with the ground, is defined as a crushing surface;
the damping part comprises damping cylinders which are coaxially sleeved and arranged, and the axes of the damping cylinders are parallel to the axis of the drill rod; the transmission part comprises transmission cylinders which are coaxially sleeved and arranged, and the axis of each transmission cylinder is superposed with the axis of each damping cylinder; the distance between the adjacent shock absorption cylinders is greater than the thickness of the cylinder wall of the transmission cylinder, and the distance between the adjacent transmission cylinders is greater than the thickness of the cylinder wall of the shock absorption cylinder; when the shock absorption rod and the crushing rod are connected end to end and spliced, the shock absorption cylinders and the transmission cylinders are arranged at intervals and are sleeved and spliced with each other to form the shock absorption area;
a crushing channel is arranged in the crushing rod, the upper port of the crushing channel is exposed from the transmission part, and the lower port of the crushing channel is exposed from the crushing surface; an extrusion rod is arranged in the crushing channel in a sliding mode, and the length of the extrusion rod is larger than that of the crushing channel; an extrusion block which is opposite to and matched with the extrusion rod is arranged in the damping part; when the shock-absorbing rod and the crushing rod are tightly abutted end to end, the extrusion block abuts against the upper end of the extrusion rod and pushes the lower end of the extrusion rod out of the crushing surface.
The relevant content in the above technical solution is explained as follows:
1. connecting piece: the connecting piece has various common structures or forms, such as a chain cable structure, and two ends of the chain cable are respectively arranged on the shock absorption rod and the crushing rod; for example, the structure of the telescopic sleeve, the elastic telescopic sleeve wraps the lower end of the shock-absorbing rod and the upper end of the crushing rod (i.e. the shock-absorbing area); such as elastic components (elastic columns, elastic tension springs, elastic ropes) and the like, wherein the elastic components are connected between the shock absorption rods and the crushing rods; the shock absorption rod and the crushing rod are in end-to-end connection and can move relatively within a certain range of the axis of the drill rod.
2. A damping area: because the shock absorption rod and the crushing rod can move relatively in a certain range of the axis of the drill rod, the size of a shock absorption area formed by splicing the shock absorption part and the transmission part on the axis of the drill rod is changed in a reciprocating mode, and the shock absorption area is an area with a variable size.
3. The upper port of the crushing channel is exposed from the transmission part: because the transmission part comprises the transmission cylinders which are coaxially sleeved and arranged, an annular cavity (the space is reserved for the damping cylinder) is formed between the adjacent transmission cylinders, the upper port of the crushing channel can extend to the annular bottom surface of the annular cavity, and the corresponding extrusion block is arranged on the annular end surface of the damping cylinder; the upper port of the crushing channel can also extend inside the wall of the transmission cylinder and is exposed from the annular end face of the transmission cylinder, and the corresponding extrusion block is arranged in the annular area between the adjacent shock absorption cylinders.
4. The length of the extruding rod is greater than that of the crushing channel: at least one end of the two ends of the extrusion rod necessarily extends out of the crushing channel; when the shock absorption rod and the crushing rod are in end-to-end tight abutting, the lower end of the extrusion rod is exposed out of the crushing surface and extrudes and crushes the cracked stratum; when the shock absorption rod and the crushing rod are connected end to end and are pulled apart for a certain distance and not tightly abutted, the lower end of the extrusion rod is pushed by the stratum, and the upper end of the extrusion rod is exposed from the upper port of the crushing channel.
5. The extrusion rod is not prevented from sliding from the crushing channel, and various common methods or structures can be adopted; such as: a limiting part is arranged between the extrusion rod and the crushing channel, and is similar to a buckle, a pin shaft, a limiting head and the like; such as: the shapes of the extrusion rod and the crushing channel are not completely consistent so as to prevent the extrusion rod from sliding down from the lower part; for another example: magnetic adsorption exists between the extrusion rod and the crushing channel and between the extrusion rod and the extrusion block; as long as the common structure that the extrusion rod can be prevented from sliding down from the lower port of the crushing channel is adopted.
The working process and the advantages of the invention are as follows:
in the working preparation stage, a drill rod is arranged on a breaking hammer, a damping rod is hung by the breaking hammer, the breaking rod is hung below the damping rod through a connecting piece, the damping rod and the breaking rod are kept in end-to-end splicing under the constraint of the connecting piece, and the damping rod and the breaking rod can move relatively within a certain range of the axis of the drill rod;
when the crusher works, the crushing head props against a hard surface to be crushed, and the crushing hammer performs hammering work at a certain frequency; the impact force of the breaking hammer is transmitted through the shock absorption rod and the breaking rod in sequence, and finally the hard surface is broken through the breaking head; at each stroke stage, the crushing head impacts the hard surface in the vertical axis direction, the shock absorption rod is tightly abutted with the crushing rod in an end-to-end manner, at the moment, the extrusion block impacts the extrusion rod to enable the lower end of the extrusion rod to be exposed out of the crushing head, and the cracked hard surface is laterally extruded and crushed; when the breaking hammer enters a return stroke stage, the damping rod is properly lifted, the damping rod and the breaking rod are kept connected end to end at the moment, but the transmission cylinder and the damping cylinder move relatively on the axis, the extrusion block is separated from the extrusion rod at the moment, the extrusion rod is extruded by a hard surface and moves upwards along a breaking channel, and the upper end of the extrusion rod is exposed out of an upper port of the breaking channel, so that the hard surface is impacted laterally again in the next stroke stage.
In conclusion, the traditional drill rod is structurally redesigned, so that the drill rod can extrude and crush the hard surface in the lateral direction while impacting the hard surface on the axis, and the hard surface is crushed in multiple directions at each stroke stage; the crushing efficiency is effectively improved; more importantly, as the interval between the adjacent shock absorption cylinders is greater than the thickness of the cylinder wall of the transmission cylinder and the interval between the adjacent transmission cylinders is greater than the thickness of the cylinder wall of the shock absorption cylinder, a certain moving space is reserved between the shock absorption rod and the crushing rod in the radial direction of the drill rod; when the drill rod is subjected to lateral reaction force, the crushing rod can laterally move in a small degree in the radial direction of the drill rod, so that the instantaneous lateral reaction force applied to the drill rod is effectively reduced, and the abrasion of a machine body is reduced; the structure can effectively ensure the axial impact force of the drill rod, reduce the radial lateral reaction force of the drill rod, and give the drill rod a larger crushing angle, so that the drill rod can continuously crush within a certain angle range, and the crushing efficiency can be effectively improved.
Preferably, the shape of each crushing channel is not completely the same, and comprises a straight line shape extending along the axis direction of the drill rod and an arc shape of the lower port facing away from the axis of the drill rod; the straight line shape is convenient to process and punch, and the production cost can be effectively reduced; the arc-shaped crushing channel can enable the lower end of the extrusion rod to be exposed out of the crushing surface and have a larger included angle with the axis of the drill rod, so that the extrusion and crushing are carried out from the side direction more efficiently.
Preferably, the upper end of the extrusion rod and the extrusion block are in a shape-matched wedge shape, and the upper end of the extrusion rod and the wedge surface of the extrusion block are in opposite matching; an extrusion groove matched with the wedge surface of the extrusion block is formed at the upper port of the crushing channel; the wedges are distributed in the circumferential direction of the drill rod in an equidistant way in an end-to-end way; at each stroke stage, the damping part impacts the transmission part, and meanwhile, the extrusion block applies force tangent to the circumference of the transmission part to the extrusion rod and the extrusion groove, so that the crushing rod is driven to rotate, and the crushing effect is improved.
Preferably, the crushing channels are rotationally symmetrically distributed within the crushing rod.
Preferably, the lengths of the extrusion rods in the crushing channels are not completely consistent, and the lengths of the extrusion rods gradually change in the circumferential direction of the crushing rods; in each stroke stage, because of different lengths, the extrusion force and the extrusion time of the lower end of each extrusion rod on the hard surface are different, so that the hard surface is continuously and locally extruded for multiple times in each stroke stage, and the crushing efficiency is improved; the reaction force applied to the extrusion rod is different in time and size, so that the crushing rod is driven to rotate in small amplitude under the sequential pushing of the reaction force, the rotating and stirring effect is achieved, and the crushing effect is further improved.
Preferably, the extrusion rod and the extrusion block are magnetically attracted; the structure can prevent the extrusion rod from slipping from the lower port of the crushing channel, and can timely pull the extrusion rod to reset, so that the next crushing is facilitated.
Preferably, the opposite cylinder surfaces of the shock absorption cylinder and the transmission cylinder are provided with buffer layers; so as to further reduce the lateral reaction force transmitted to the machine body by the drill rod and further reduce the lateral reaction vibration.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a shock absorption rod and a crushing rod which are abutted end to end tightly according to one embodiment of the invention.
Fig. 2 is a schematic cross-sectional structure diagram of a shock absorption rod and a crushing rod which are not abutted closely end to end in one embodiment of the invention.
Fig. 3 is a schematic end view of a shock absorbing part according to an embodiment of the present invention.
Fig. 4 is a schematic end view of the transmission part according to an embodiment of the present invention.
FIG. 5 is a schematic sectional view of the damping portion and the transmission portion in a state where the damping rod and the crushing rod are connected end to end according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): referring to fig. 1 to 5, a breaking hammer drill rod includes a shock-absorbing rod 1, a breaking rod 2 and a connecting member 3, in this embodiment, the connecting member 3 is a telescopic sleeve structure; under the constraint of the connecting piece 3, the shock absorption rod 1 and the crushing rod 2 can be detachably spliced end to end and can relatively move in a certain range of the axis of the drill rod;
wherein the upper end of the shock absorption rod 1 is provided with a connector which can be detachably assembled with the machine body, and the lower end of the shock absorption rod 1 is provided with a shock absorption part 7;
the upper end of the crushing rod 2 is provided with a transmission part 8 matched with the damping part 7, and the transmission part 8 and the damping part 7 are combined to form a damping area A of the drill rod; the lower end of the crushing rod 2 is provided with a crushing head 21, and the surface of the crushing head 21 contacting with the ground is defined as a crushing surface 211;
the damping part 7 comprises damping cylinders 71 which are coaxially sleeved and arranged, and the axes of the damping cylinders 71 are parallel to the axis of the drill rod; the transmission part 8 comprises transmission cylinders 81 coaxially sleeved and arranged, and the axis of the transmission cylinders 81 is superposed with the axis of the damping cylinder 71; the distance between the adjacent shock absorption cylinders 71 is greater than the thickness of the cylinder wall of the transmission cylinder 81, and the distance between the adjacent transmission cylinders 81 is greater than the thickness of the cylinder wall of the shock absorption cylinders 71;
when the shock absorption rod 1 and the crushing rod 2 are connected end to end in a spliced mode, the shock absorption cylinders 71 and the transmission cylinders 81 are arranged at intervals and are sleeved and spliced with each other to form the shock absorption area A, and the shock absorption cylinder 71 at the innermost circle is solidified to form a cylinder; in the embodiment, elastic buffer layers are arranged on the opposite cylinder surfaces of the damping cylinder 71 and the transmission cylinder 81 so as to further reduce the lateral shock; because the shock absorption rod 1 and the crushing rod 2 can move relatively in a certain range of the axis of the drill rod, the size of a shock absorption area A formed by splicing the shock absorption part 7 and the transmission part 8 on the axis of the drill rod is changed in a reciprocating way, and the shock absorption area A is an area with a variable size; in this embodiment, an elastic telescopic sleeve covers the lower end of the shock-absorbing rod 1 and the upper end of the crushing rod 2 (i.e. the shock-absorbing area a), and can change in extension and contraction along with the relative movement of the two.
A plurality of crushing channels 4 are arranged in the crushing rod 2, and the crushing channels 4 are rotationally and symmetrically distributed in the crushing rod 2; in the present embodiment, the crushing channel 4 is arc-shaped; the upper port of the crushing channel 4 emerges from the transmission 8, the lower port emerges from the crushing surface 211 and the lower port faces away from the shank axis; in the present embodiment, the upper port of the crushing passage 4 is exposed from the space between the adjacent transmission cylinders 81; an extrusion rod 5 is arranged in the crushing channel 4 in a sliding mode, and the length of the extrusion rod 5 is larger than that of the crushing channel 4; the damping part 7 is provided with an extrusion block 6 which is opposite to and matched with the extrusion rod 5 in position, in the embodiment, the extrusion block 6 is matched with the position and the interval of the port on the crushing channel 4, and the extrusion block 6 is arranged on the annular end surface of the damping cylinder 71; when the damping rod 1 and the crushing rod 2 are closely abutted end to end, the extrusion block 6 abuts against the upper end of the extrusion rod 5 and pushes the lower end of the extrusion rod 5 out of the crushing surface 211; in the embodiment, the extrusion rod 5 and the extrusion block 6 are magnetically attracted; so as to prevent the extrusion rod 5 from slipping from the lower port of the crushing channel 4 and timely pull the extrusion rod 5 to reset, thereby facilitating the next crushing.
In the working preparation stage, a drill rod is arranged on a breaking hammer, a damping rod 1 is hung by the breaking hammer, a breaking rod 2 is hung below the damping rod 1 through a connecting piece 3, under the constraint of the connecting piece 3, the damping rod 1 and the breaking rod 2 are in end-to-end splicing, and the damping rod 1 and the breaking rod 2 can move relatively within a certain range of the axis of the drill rod;
when the crusher works, the crushing head 21 props against a hard surface to be crushed, and the crushing hammer performs hammering work at a certain frequency; the impact force of the breaking hammer is transmitted through the shock absorption rod 1 and the breaking rod 2 in sequence, and finally the hard surface is broken through the breaking head 21.
At each stroke stage, the crushing head 21 impacts the hard surface in the vertical axis direction, the shock absorption rod 1 and the crushing rod 2 are tightly abutted end to end, at the moment, the extrusion block 6 impacts the extrusion rod 5 to enable the lower end of the extrusion rod 5 to be exposed out of the crushing head 21, and the cracked hard surface is extruded and crushed in the lateral direction (the lateral direction refers to other directions with a certain included angle with the axis of the drill rod, and in the process that the drill rod crushes the hard surface along the axial direction of the drill rod, the extrusion rod 5 applies force to and crushes the soil layer on the hard surface in other directions); particularly, in the embodiment, the lower end port faces away from the axis of the drill rod, so that a larger included angle exists between the lower end of the extrusion rod 5 and the axis of the drill rod, and the extrusion and the crushing are more efficiently carried out from the side direction.
When the breaking hammer enters a return stroke stage, the damping rod 1 is properly lifted, at the moment, although the damping rod 1 and the breaking rod 2 are kept in end-to-end connection, the transmission cylinder 81 and the damping cylinder 71 move relatively on the axis, at the moment, the extrusion block 6 is separated from the extrusion rod 5, the extrusion rod 5 is extruded by a hard surface and moves upwards along the breaking channel 4, and the upper end of the extrusion rod 5 is exposed out of the upper port of the breaking channel 4, so that the hard surface is impacted laterally again in the next stroke stage.
In this embodiment, the upper end of the extrusion rod 5 and the extrusion block 6 are in a shape-matched wedge shape, and the upper end of the extrusion rod 5 and the wedge surface of the extrusion block 6 are in opposite matching; an extrusion groove 41 matched with the wedge surface of the extrusion block 6 is formed at the upper port of the crushing channel 4; the wedges are distributed in the circumferential direction of the drill rod in an equidistant way in an end-to-end way; at each stroke stage, the damping part 7 impacts the transmission part 8, and simultaneously, the extrusion block 6 applies a force tangential to the circumference of the transmission part 8 to the extrusion rod 5 and the extrusion groove 41 to promote the crushing rod 2 to rotate, so that the crushing effect is improved.
In the present embodiment, the length of the extrusion rods 5 in each crushing channel 4 is not exactly uniform, and the length of the extrusion rods 5 gradually changes in the circumferential direction of the crushing rod 2; in each stroke stage, because of different lengths, the extrusion force and extrusion time of the lower end of each extrusion rod 5 on the hard surface are different, so that the hard surface is continuously and locally extruded at a certain frequency in each stroke stage, and the crushing efficiency is improved; the reaction force applied to the extrusion rod 5 is different in time and magnitude, so that the crushing rod 2 is driven to rotate in small amplitude under the sequential pushing of the reaction force, the rotating and stirring effect is achieved, and the crushing effect is further improved.
In conclusion, the traditional drill rod is structurally redesigned, so that the drill rod can extrude and crush the hard surface in the lateral direction while impacting the hard surface on the axis, and the hard surface is crushed in multiple directions at each stroke stage; the crushing efficiency is effectively improved; more importantly, as the interval between the adjacent shock absorption cylinders 71 is larger than the thickness of the cylinder wall of the transmission cylinder 81, and the interval between the adjacent transmission cylinders 81 is larger than the thickness of the cylinder wall of the shock absorption cylinders 71, a certain moving space is reserved between the shock absorption rod 1 and the crushing rod 2 in the radial direction of the drill rod; when the drill rod is subjected to lateral reaction force, the crushing rod 2 can laterally move in the radial direction of the drill rod by a small degree, so that the instantaneous lateral reaction force applied to the drill rod is effectively reduced, and the abrasion of a machine body is reduced; the structure can effectively ensure the axial impact force of the drill rod, reduce the radial lateral reaction force of the drill rod, and give the drill rod a larger crushing angle, so that the drill rod can continuously crush within a certain angle range, and the crushing efficiency can be effectively improved.
In addition, the technical scheme can be further simplified, for example, only one damping cylinder 71 is arranged on the damping part 7, the corresponding transmission cylinder 81 is also one and can be simplified to form a transmission column in a solid structure, and when the transmission cylinder 81 and the transmission column are sleeved with each other, a gap convenient for buffering exists between the two transmission cylinders; at this time, a single-tube structure that the damping tube 71 is sleeved with the transmission column is formed; similarly, the damper cylinder 71 may be simplified to a solid structure, and only one transmission cylinder 81 may be provided, thereby forming a single cylinder fitting structure in which the transmission cylinder 81 is fitted over the damper post.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. A breaking hammer drill rod is characterized in that: comprises a shock absorption rod, a crushing rod and a connecting piece; under the constraint of the connecting piece, the shock absorption rod and the crushing rod can be detachably spliced end to end and can relatively move in a certain range of the axis of the drill rod;
the upper end of the shock absorption rod is provided with a connector which can be detachably assembled with the machine body, and the lower end of the shock absorption rod is provided with a shock absorption part;
the upper end of the crushing rod is provided with a transmission part matched with the damping part, and the transmission part and the damping part are combined to form a damping area of the drill rod; the lower end of the crushing rod is provided with a crushing head, and the surface of the crushing head, which is in contact with the ground, is defined as a crushing surface;
the damping part comprises damping cylinders which are coaxially sleeved and arranged, and the axes of the damping cylinders are parallel to the axis of the drill rod; the transmission part comprises transmission cylinders which are coaxially sleeved and arranged, and the axis of each transmission cylinder is superposed with the axis of each damping cylinder; the distance between the adjacent shock absorption cylinders is greater than the thickness of the cylinder wall of the transmission cylinder, and the distance between the adjacent transmission cylinders is greater than the thickness of the cylinder wall of the shock absorption cylinder; when the shock absorption rod and the crushing rod are connected end to end and spliced, the shock absorption cylinders and the transmission cylinders are arranged at intervals and are sleeved and spliced with each other to form the shock absorption area;
a crushing channel is arranged in the crushing rod, the upper port of the crushing channel is exposed from the transmission part, and the lower port of the crushing channel is exposed from the crushing surface; an extrusion rod is arranged in the crushing channel in a sliding mode, and the length of the extrusion rod is larger than that of the crushing channel; an extrusion block which is opposite to and matched with the extrusion rod is arranged in the damping part; when the shock-absorbing rod and the crushing rod are tightly abutted end to end, the extrusion block abuts against the upper end of the extrusion rod and pushes the lower end of the extrusion rod out of the crushing surface.
2. The demolition hammer shank according to claim 1, wherein: the shape of each crushing channel is not completely the same, and comprises a straight line shape extending along the axis direction of the drill rod and an arc shape of the lower port facing away from the axis of the drill rod.
3. The demolition hammer shank according to claim 1, wherein: the upper end of the extrusion rod and the extrusion block are in a wedge shape with a matched shape, and the upper end of the extrusion rod and the wedge surface of the extrusion block are opposite and matched; an extrusion groove matched with the wedge surface of the extrusion block is formed at the upper port of the crushing channel; the wedges are distributed in the circumferential direction of the drill rod in an equidistant way in an end-to-end way.
4. The demolition hammer shank according to claim 1, wherein: the crushing channels are rotationally and symmetrically distributed in the crushing rod.
5. The demolition hammer shank according to claim 1, wherein: and buffer layers are arranged on the opposite cylinder surfaces of the damping cylinder and the transmission cylinder.
6. A demolition hammer shank according to any one of claims 1-5, characterised in that: the length of the extrusion rod in each crushing channel is not completely consistent, and the length of the extrusion rod gradually changes in the circumferential direction of the crushing rod.
7. The demolition hammer shank according to claim 6, wherein: the extrusion rod and the extrusion block are magnetically attracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168194.6A CN112900534A (en) | 2021-02-07 | 2021-02-07 | Drill rod of breaking hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168194.6A CN112900534A (en) | 2021-02-07 | 2021-02-07 | Drill rod of breaking hammer |
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| Publication Number | Publication Date |
|---|---|
| CN112900534A true CN112900534A (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110168194.6A Withdrawn CN112900534A (en) | 2021-02-07 | 2021-02-07 | Drill rod of breaking hammer |
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| CN (1) | CN112900534A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585384A (en) * | 2021-08-13 | 2021-11-02 | 江阴市世鸿机械有限公司 | Wear-resistant and shock-proof breaking hammer shell structure |
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| CN209603222U (en) * | 2019-01-23 | 2019-11-08 | 广东建基基础工程有限公司 | A kind of hydraulic breaking hammer |
| CN111119269A (en) * | 2019-12-30 | 2020-05-08 | 东莞市至简机电工程技术有限公司 | Automatic top pressure follow-up hydraulic breaking hammer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113585384A (en) * | 2021-08-13 | 2021-11-02 | 江阴市世鸿机械有限公司 | Wear-resistant and shock-proof breaking hammer shell structure |
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Application publication date: 20210604 |