CN108316385B - Breaking hammer and working method thereof - Google Patents
Breaking hammer and working method thereof Download PDFInfo
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- CN108316385B CN108316385B CN201810091498.5A CN201810091498A CN108316385B CN 108316385 B CN108316385 B CN 108316385B CN 201810091498 A CN201810091498 A CN 201810091498A CN 108316385 B CN108316385 B CN 108316385B
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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
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Abstract
The invention belongs to the technical field of breaking hammers, and particularly relates to a breaking hammer and a working method thereof, which comprises an impact part, an outer sleeve, a drill rod slide hole, a drill rod switching mechanism, a pointed drill rod, a bald drill rod, a drill rod tooth surface, a drill rod spring, a first arc slide block, a second arc slide block, a cylindrical gear, a handle clamping groove, a driving rod and a driving key, wherein the impact part of the impact hammer adopts the conventional technology, a rod head is switched to ensure that a handle clamping plate is separated from the handle clamping groove on the first arc slide block by pulling the handle, the handle is rotated, power is transmitted to a rod head through the handle, the driving rod, the driving key, the cylindrical gear and the drill rod tooth surface, the drill rod tooth surface positioned in the groove at the inner side of the drill rod is meshed with the cylindrical gear to generate linear motion opposite to the direction of the outer sleeve, when the handle rotates to ensure that two drill, and finishing the switching of the drill rod head. The invention uses mechanical transmission and locking mechanism, has stable and reliable structure and stronger practicability.
Description
The invention is a divisional application of a patent with the application number of 2016105478396, the application date of 2016, 07 and 13, and the name of the invention is 'a breaking hammer capable of switching a drill rod head'.
Technical Field
The invention belongs to the technical field of breaking hammers, and particularly relates to a breaking hammer with switchable drill rod heads.
Background
At present, the breaking hammer is widely applied to mining and other engineering construction, the requirements on the breaking hammer drill rod head are different due to different target breaking objects such as geological structures, and the like, so that the shape of the drill rod head can meet different working conditions, and two drill rod heads are commonly used in the current engineering: pointed drill rods and bald drill rods. However, in the engineering, the drill rod head of the breaking hammer is frequently replaced, time and labor are consumed, a device which is simple and easy to operate, works stably and reliably and can be switched at any time is needed for realizing the purpose of quickly replacing the drill rod head under a complex working condition and accelerating the development speed of an engineering project, and therefore, how to design the switchable drill rod head has very important significance.
The invention designs a breaking hammer capable of switching a drill rod head to solve the problems.
Disclosure of Invention
In order to solve the defects in the prior art, the invention discloses a breaking hammer with a switchable drill rod head, which is realized by adopting the following technical scheme.
A quartering hammer of changeable drill rod head which characterized in that: the drill rod mechanism comprises an outer sleeve, a drill rod sliding hole, a pointed drill rod, a bald drill rod, a drill rod tooth surface, a drill rod switching mechanism, a drill rod spring, a first spring support and a second spring support, wherein the pointed drill rod and the bald drill rod are arranged on the inner circular surface of the outer sleeve in parallel, grooves are formed in the inner sides of the pointed drill rod and the bald drill rod, and the drill rod tooth surface is formed on the surfaces of the grooves; the drill rod switching mechanism is arranged in a groove between the pointed drill rod and the bald drill rod, and the tooth surface of the drill rod is meshed with a cylindrical gear in the drill rod switching mechanism to enable the pointed drill rod and the bald drill rod to generate relative motion so as to achieve the purpose of switching the drill rod head; the drill rod slide holes are symmetrically formed in two sides of the outer sleeve, the drill rod switching mechanism penetrates through the two drill rod slide holes, the two drill rod springs are symmetrically arranged on two sides of the outer sleeve in the same mounting mode, one end of each drill rod spring is supported and mounted on the drill rod switching mechanism through a first spring, the other end of each drill rod spring is supported and mounted on the bottom end face of the drill rod slide hole through a second spring, and the drill rod springs are used for supporting and fixing the drill rod switching mechanism.
The drill rod switching mechanism comprises a driving rod, a driving key, a cylindrical gear, a handle clamping groove, a handle clamping plate, a first arc sliding block, a second arc sliding block, a clamping ring, a clamping end surface, a key reset spring and a spring limiting ring, wherein the handle clamping plate is installed at one end of the driving rod, the handle is fixedly connected with the handle clamping plate, and the clamping ring is installed at the other end of the driving rod; the two sides of the inner circle surface of the cylindrical gear are symmetrically processed with chutes, the left end of the chute has a certain distance from the left end surface of the cylindrical gear, the right end of the chute reaches the right end surface of the cylindrical gear, the two driving keys are symmetrically distributed at the middle position of the driving rod, the driving rod is arranged in the cylindrical gear by the matching of the driving keys and the chutes on the cylindrical gear, the driving keys can slide relatively in the chutes, the purpose of the design is to transmit the driving torque on the driving rod to the cylindrical gear by the driving keys; the key return spring is arranged in the sliding chute, one end of the key return spring is arranged at one end of the sliding chute, the other end of the key return spring is arranged on the spring limiting ring, and the spring limiting ring is arranged on the end face of the cylindrical gear; the first arc sliding block and the second arc sliding block are sleeved at two ends of the driving rod in a hollow mode and respectively slide in the two drill rod sliding holes, the first arc sliding block is provided with a handle clamping groove, and the handle clamping plate and the handle clamping groove are matched to enable the mechanism to be locked. The second arc slide block is provided with a clamping end face, the clamping ring is matched with the clamping end face, and the clamping ring, the clamping end face and the spring limiting ring are used for ensuring correct installation and matching positions of all parts of the drill rod switching mechanism; two first spring supports are respectively installed on the lower sides of the first arc sliding block and the second arc sliding block.
As a further improvement of the present technology, the key return spring is an extension spring.
As a further improvement of the present technology, the breaking hammer may be used in an on-vehicle robot or a hand-held machine.
As a further improvement of the technology, the top head of the drill rod head can also be a round head so as to meet different use conditions.
As a further improvement of the technology, the impact part of the breaking hammer adopts the hydraulic driving technology and the mixed driving technology of hydraulic pressure and nitrogen.
Compared with the traditional breaking hammer technology, the power of the breaking hammer is transmitted to the drill rod head through the handle, the driving rod, the driving key, the cylindrical gear and the drill rod tooth surface, the drill rod tooth surface positioned in the groove on the inner side of the drill rod is meshed with the cylinder to enable the two drill rods to generate linear motion in opposite directions, the handle is rotated until the positions of the first arc slide block and the second arc slide block are positioned at the top or the bottom of the drill rod slide hole, the pointed drill rod and the bald drill rod generate a certain height difference, the handle is pressed to enable the handle clamping plate to be clamped in the handle clamping groove positioned on the outer end surface of the first arc slide block, at the moment, the first arc slide block and the second arc slide block are tightly attached to the outer sleeve through the drill rod spring to enable the position of the drill rod switching mechanism to be determined, and the first arc slide block and the second arc slide block have no rotational freedom with the outer sleeve. The invention uses the matching relationship of the first arc slide block, the second arc slide block and the drill rod slide hole on the outer sleeve to overcome the revolving moment of the driving rod, so that the drill rod switching mechanism can be locked after completing the switching process.
Drawings
Fig. 1 is an external structural view of an integral part.
Fig. 2 is a perspective view of the structure of the integral part.
Fig. 3 is a sectional view of the structure of the integral unit 1.
Fig. 4 is a sectional view of the structure of the integral unit 2.
FIG. 5 is a schematic view showing the meshing relationship between the tooth surfaces of the cylindrical gear and the drill rod.
Fig. 6 is a schematic view of a bald drill rod configuration.
FIG. 7 is a schematic view of a pointed shank configuration.
FIG. 8 is a schematic view of the first arcuate slider, the handle and the drill rod spring being installed.
Fig. 9 is a schematic view of the installation of the second arc sliding block and the drill rod spring.
Fig. 10 is a schematic view of the jacket structure.
FIG. 11 is a schematic view of the installation of the shank switching mechanism.
Fig. 12 is a schematic view of a cylindrical gear structure.
Fig. 13 is a schematic view of a first circular slider structure.
Fig. 14 is a schematic view of a second circular slider structure.
Fig. 15 is a schematic view of a drive rod configuration.
FIG. 16 is a front view of the shank switching mechanism installed.
FIG. 17 is a top view of the shank switching mechanism installation.
Number designation in the figures: 1. the drill rod comprises an outer sleeve, 2, a drill rod sliding hole, 3, a drill rod switching mechanism, 4, a pointed drill rod, 5, a drill rod with a top end, 6, a drill rod tooth surface, 7, a drill rod spring, 8, a first arc slide block, 9, a second arc slide block, 10, a first spring support, 11, a second spring support, 12, a cylindrical gear, 13, a handle, 14, a sliding groove, 15, a handle clamping groove, 16, a clamping end surface, 17, a clamping ring, 18, a driving rod, 19, a driving key, 20, a handle clamping plate, 21, a key reset spring, 22 and a spring limiting ring.
Detailed Description
As shown in fig. 1, 2, 3 and 10, the drill rod comprises an outer sleeve 1, a drill rod slide hole 2, a pointed drill rod 4, a bald drill rod 5, a drill rod tooth surface 6, a drill rod switching mechanism 3, a drill rod spring 7, a first spring support 10 and a second spring support 11, wherein the pointed drill rod 4 and the bald drill rod 5 are arranged on the inner circular surface of the outer sleeve 1 in parallel, grooves are machined on the inner sides of the pointed drill rod 4 and the bald drill rod 5, and the drill rod tooth surface 6 is machined on the surfaces of the grooves; the drill rod switching mechanism 3 is arranged in a groove between the pointed drill rod 4 and the bald drill rod 5, and the tooth surface 6 of the drill rod is meshed with a cylindrical gear 12 in the drill rod switching mechanism 3 to enable the pointed drill rod 4 and the bald drill rod 5 to move relatively so as to achieve the purpose of switching drill rod heads; as shown in fig. 2, 10 and 11, drill rod slide holes 2 are symmetrically formed in two sides of an outer sleeve 1, and a drill rod switching mechanism 3 penetrates through the two drill rod slide holes 2; as shown in fig. 8 and 9, two rod springs 7 are symmetrically installed on both sides of the outer casing 1 in the same manner, and for any one of the rod springs 7, one end is installed on the rod switching mechanism 3 through a first spring support 10, and the other end is installed on the bottom end surface of the rod slide hole 2 through a second spring support 11, where the rod spring 7 functions to support and fix the rod switching mechanism 3.
As shown in fig. 4, 5 and 16, the drill rod switching mechanism 3 includes a driving rod 18, a driving key 19, a cylindrical gear 12, a handle 13, a handle slot 15, a handle catch plate 20, a first arc slider 8, a second arc slider 9, a snap ring 17, a catch end surface 16, a key return spring 21 and a spring limit ring 22, wherein the handle 13 catch plate is installed at one end of the driving rod 18, the handle 13 is fixedly connected with the handle 13 catch plate, and the snap ring 17 is installed at the other end; as shown in fig. 12, 15 and 16, sliding grooves 14 are symmetrically formed on both sides of the inner circumferential surface of the cylindrical gear 12, the left end of each sliding groove 14 is a certain distance away from the left end surface of the cylindrical gear 12, the right end of each sliding groove 14 reaches the right end surface of the cylindrical gear 12, two driving keys 19 are symmetrically distributed at the middle position of a driving rod 18, the driving rod 18 is installed in the cylindrical gear 12 by matching the driving keys 19 with the sliding grooves 14 on the cylindrical gear 12, and the driving keys 19 can slide relatively in the sliding grooves 14, so that the driving torque on the driving rod 18 is transmitted to the cylindrical gear 12 through the driving keys 19; as shown in fig. 13, 14 and 17, a key return spring 21 is installed in the sliding slot 14, one end of the key return spring is installed at one end of the sliding slot 14, the other end of the key return spring is installed on a spring limiting ring 22, the spring limiting ring 22 is installed on the end surface of the cylindrical gear 12, a first arc sliding block 8 and a second arc sliding block 9 are both sleeved at two ends of the driving rod 18 and respectively slide in the two drill rod sliding holes 2, the first arc sliding block 8 is provided with a handle clamping slot 15, and a handle clamping plate 20 is matched with the handle clamping slot 15 to lock the mechanism. The second arc-shaped sliding block 9 is provided with a clamping end face 16, a clamping ring 17 is matched with the clamping end face 16, and the clamping ring 17, the clamping end face 16 and a spring limiting ring 22 are used for ensuring the correct installation and matching positions of all parts of the drill rod switching mechanism 3; two first spring supports 10 are respectively installed at the lower sides of the first circular arc slider 8 and the second circular arc slider 9.
As shown in fig. 16, the key return spring 21 is an extension spring.
The breaking hammer can be used on vehicle-mounted automatic machinery and handheld machinery.
The top of the drill rod head can also be a round head so as to meet different use conditions.
The impact part of the breaking hammer adopts hydraulic drive and hydraulic and nitrogen mixed drive technology.
The invention has strong practicability.
As shown in figures 3 and 5, the power of the invention is transmitted to the drill rod head through the handle 13, the driving rod 18, the driving key 19, the cylindrical gear 12 and the drill rod tooth surface 6, and the drill rod tooth surface 6 positioned in the inner groove of the drill rod is meshed with the cylinder to enable the two drill rods to generate linear motion in opposite directions. The specific implementation process of the breaking hammer comprises the following steps: assuming that the drill rod head of the breaking hammer is a pointed drill rod 4 at the moment, impacting the breaking hammer, the drill rod head is in a working state, switching to the bald drill rod 5 according to the use working condition, stopping impacting the breaking hammer at the moment, pulling the handle 13 out of the clamping groove of the handle 13, rotating the handle 13 clockwise, driving the driving rod 18 to rotate clockwise by the handle 13, driving the cylindrical gear 12 by the driving rod 18 through the driving key 19 to enable the cylindrical gear 12 to rotate clockwise, enabling the cylindrical gear 12 to be meshed with the two drill rod tooth surfaces 6, and enabling the pointed drill rod 4 to move upwards and the bald drill rod 5 to move downwards at the moment; when a certain height difference occurs between the pointed drill rod 4 and the bald drill rod 5, the handle 13 is pressed to clamp the handle clamping plate 20 in the handle clamping groove 15 on the first arc slide block 8, at the moment, the first arc slide block 8 and the second arc slide block 9 are tightly attached to the outer sleeve 1 through the drill rod spring 7, so that the position of the drill rod switching mechanism 3 is determined, and because the first arc slide block 8, the second arc slide block 9 and the outer sleeve 1 have no rotational freedom, when the driving rod 18 provided with the handle 13 is clamped, the matching relation between the first arc slide block 8, the second arc slide block 9 and the drill rod sliding hole 2 on the outer sleeve 1 overcomes the rotating moment of the driving rod 18 to lock the mechanism, the switching process is completed, the drill rod head is switched to the bald drill rod 5, and the bald drill rod 5 of the breaking hammer is impacted again to enter a working state. Similarly, when the pointed drill rod 4 needs to be used, the pull-out handle 13 rotates anticlockwise until the whole drill rod switching mechanism 3 comprises the first arc slide block 8 and the second arc slide block 9 to move to the bottommost part of the drill rod slide hole 2, the rest operation processes are the same as the first switching process, and the drill rod head is switched from the bald drill rod 5 to the pointed drill rod 4.
Claims (5)
1. A working method of a breaking hammer is characterized by comprising the following steps: the drill rod switching mechanism comprises an outer sleeve, a pointed drill rod, a bald drill rod and a drill rod switching mechanism, wherein the pointed drill rod and the bald drill rod are arranged on the inner circular surface of the outer sleeve in parallel, grooves are formed in the inner sides of the pointed drill rod and the bald drill rod, and the surfaces of the grooves are provided with drill rod tooth surfaces; the drill rod switching mechanism is arranged in a groove between the pointed drill rod and the bald drill rod, and the tooth surface of the drill rod is meshed with a cylindrical gear in the drill rod switching mechanism to enable the pointed drill rod and the bald drill rod to generate relative motion so as to realize switching between the pointed drill rod and the bald drill rod; the drill rod switching mechanism penetrates through the two drill rod sliding holes; two drill rod springs are symmetrically arranged on two sides of the outer sleeve in the same mounting mode, and for any one of the drill rod springs, one end of the drill rod spring is supported and arranged on the drill rod switching mechanism through a first spring, and the other end of the drill rod spring is supported and arranged on the bottom end face of the drill rod slide hole through a second spring;
the drill rod switching mechanism comprises a driving rod, a driving key, a cylindrical gear, a handle clamping groove, a handle clamping plate, a first arc sliding block, a second arc sliding block, a clamping ring, a clamping end surface, a key reset spring and a spring limiting ring, wherein the handle clamping plate is installed at one end of the driving rod, the handle is fixedly connected with the handle clamping plate, and the clamping ring is installed at the other end of the driving rod; the two sides of the inner circle surface of the cylindrical gear are symmetrically processed with chutes, the left end of the chute has a certain distance with the left end surface of the cylindrical gear, the right end of the chute reaches the right end surface of the cylindrical gear, the two driving keys are symmetrically distributed at the middle position of the driving rod, and the driving rod is arranged in the cylindrical gear by the matching of the driving keys and the chutes on the cylindrical gear; the key return spring is arranged in the sliding chute, one end of the key return spring is arranged at one end of the sliding chute, the other end of the key return spring is arranged on the spring limiting ring, and the spring limiting ring is arranged on the end face of the cylindrical gear; the first arc sliding block and the second arc sliding block are both sleeved at two ends of the driving rod in a hollow mode and respectively slide in the two drill rod sliding holes, the first arc sliding block is provided with a handle clamping groove, a handle clamping plate is matched with the handle clamping groove, the second arc sliding block is provided with a clamping end face, a clamping ring is matched with the clamping end face, and two first spring supports are respectively installed on the lower sides of the first arc sliding block and the second arc sliding block;
the working method comprises the following steps:
if the drill rod head of the breaking hammer is a pointed drill rod, the breaking hammer is impacted, the drill rod head is in a working state, the drill rod head is switched to a bald drill rod according to the use working condition, and the impact on the breaking hammer is stopped at the moment;
the handle is pulled out of the handle clamping groove, the handle is rotated clockwise, the handle drives the driving rod to rotate clockwise, the driving rod drives the cylindrical gear through the driving key to enable the cylindrical gear to rotate clockwise, the cylindrical gear is meshed with the tooth surfaces of the two drill rods, and at the moment, the pointed drill rod moves upwards and the bald drill rod moves downwards;
when a certain height difference occurs between the pointed drill rod and the bald drill rod, the handle is pressed to clamp the handle clamping plate in the handle clamping groove on the first arc slide block, the first arc slide block and the second arc slide block are tightly attached to the outer sleeve through the drill rod spring to ensure that the position of the drill rod switching mechanism is determined, and because the first arc slide block and the second arc slide block do not have rotational freedom with the outer sleeve, when a driving rod provided with the handle is clamped, the matching relation between the first arc slide block and the second arc slide block and a drill rod sliding hole on the outer sleeve overcomes the rotating torque of the driving rod to lock the mechanism, the switching process is completed, the drill rod head is switched into the bald drill rod, and the bald drill rod of the breaking hammer is impacted again to enter a working state;
when the pointed drill rod needs to be used, the pull-out handle rotates anticlockwise until the whole drill rod switching mechanism comprises the first arc slide block and the second arc slide block, the first arc slide block and the second arc slide block move to the bottommost part of the drill rod sliding hole, the rest operation processes are the same as the first switching process, and the drill rod head is switched into the pointed drill rod from the bald drill rod.
2. A method of operating a demolition hammer as claimed in claim 1, characterized in that: the key return spring is an extension spring.
3. A method of operating a demolition hammer as claimed in claim 1, characterized in that: the breaking hammer is used on a vehicle-mounted automatic machine and a handheld machine.
4. A method of operating a demolition hammer as claimed in claim 1, characterized in that: as an alternative to the pointed or bald drill rod, the top of the drill rod is rounded.
5. A method of operating a demolition hammer as claimed in claim 1, characterized in that: the impact part of the breaking hammer adopts hydraulic drive and hydraulic and nitrogen mixed drive technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810091498.5A CN108316385B (en) | 2016-07-13 | 2016-07-13 | Breaking hammer and working method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810091498.5A CN108316385B (en) | 2016-07-13 | 2016-07-13 | Breaking hammer and working method thereof |
| CN201610547839.6A CN106088202B (en) | 2016-07-13 | 2016-07-13 | A kind of quartering hammer of changeable drill head |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610547839.6A Division CN106088202B (en) | 2016-07-13 | 2016-07-13 | A kind of quartering hammer of changeable drill head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108316385A CN108316385A (en) | 2018-07-24 |
| CN108316385B true CN108316385B (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610547839.6A Active CN106088202B (en) | 2016-07-13 | 2016-07-13 | A kind of quartering hammer of changeable drill head |
| CN201810091498.5A Active CN108316385B (en) | 2016-07-13 | 2016-07-13 | Breaking hammer and working method thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610547839.6A Active CN106088202B (en) | 2016-07-13 | 2016-07-13 | A kind of quartering hammer of changeable drill head |
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| CN (2) | CN106088202B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024732B (en) * | 2018-07-20 | 2020-11-06 | 姚杭 | Breaking hammer capable of switching two drill rods in swinging mode |
| CN110984870B (en) * | 2019-12-30 | 2021-11-12 | 石门县八方石膏矿业有限公司 | Hydraulic breaking hammer with switchable drill rod |
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| KR200377897Y1 (en) * | 2004-12-24 | 2005-03-14 | 주식회사 일해토건 | Chisel for forming crack on rockbed and assembly with the same |
| CN200975256Y (en) * | 2007-05-01 | 2007-11-14 | 冀太平 | Hydraulic breaking hammer drill rod |
| CN202658644U (en) * | 2012-05-21 | 2013-01-09 | 安徽惊天液压智控股份有限公司 | Integral type hydraulic breaking hammer |
| CN202989995U (en) * | 2012-12-20 | 2013-06-12 | 江苏力博士机械股份有限公司 | Novel drill rod of hydraulic breaking hammer |
| CN203846551U (en) * | 2014-04-15 | 2014-09-24 | 台州创兴环保科技有限公司 | Hydraulic breaking hammer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101050704B (en) * | 2007-05-01 | 2011-02-02 | 冀太平 | Hydraulic crushing hammer drill rod |
| CN202117574U (en) * | 2011-06-22 | 2012-01-18 | 石家庄煤矿机械有限责任公司 | Drill rod rapid-change device for coal mine |
| CN202689926U (en) * | 2012-01-20 | 2013-01-23 | 中船重工中南装备有限责任公司 | Folding arm rock drill rig with automatic drill rod replacement device |
| US20140208575A1 (en) * | 2013-01-28 | 2014-07-31 | Caterpillar Inc. | Tie rod support for hydraulic hammer |
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- 2016-07-13 CN CN201610547839.6A patent/CN106088202B/en active Active
- 2016-07-13 CN CN201810091498.5A patent/CN108316385B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200377897Y1 (en) * | 2004-12-24 | 2005-03-14 | 주식회사 일해토건 | Chisel for forming crack on rockbed and assembly with the same |
| CN200975256Y (en) * | 2007-05-01 | 2007-11-14 | 冀太平 | Hydraulic breaking hammer drill rod |
| CN202658644U (en) * | 2012-05-21 | 2013-01-09 | 安徽惊天液压智控股份有限公司 | Integral type hydraulic breaking hammer |
| CN202989995U (en) * | 2012-12-20 | 2013-06-12 | 江苏力博士机械股份有限公司 | Novel drill rod of hydraulic breaking hammer |
| CN203846551U (en) * | 2014-04-15 | 2014-09-24 | 台州创兴环保科技有限公司 | Hydraulic breaking hammer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106088202B (en) | 2018-01-12 |
| CN106088202A (en) | 2016-11-09 |
| CN108316385A (en) | 2018-07-24 |
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Effective date of registration: 20200629 Address after: No.9 Jiaoping Road, Dongbei Township Cultural Development Zone, Gaomi City, Weifang City, Shandong Province Applicant after: Shandong Shuifa renewable resources Co.,Ltd. Address before: 362300 Sunshine Youjia Building 708, Ximei Xinhua South Road, Nanan City, Quanzhou City, Fujian Province Applicant before: Zhen Ding Technology Co.,Ltd. |
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