CN107971733B - Hydraulic support pin shaft dismounting device - Google Patents
Hydraulic support pin shaft dismounting device Download PDFInfo
- Publication number
- CN107971733B CN107971733B CN201711450510.9A CN201711450510A CN107971733B CN 107971733 B CN107971733 B CN 107971733B CN 201711450510 A CN201711450510 A CN 201711450510A CN 107971733 B CN107971733 B CN 107971733B
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- pin
- fixed
- rod
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a hydraulic support pin shaft dismounting device, which relates to the field of mine hydraulic support pin shaft dismounting, and comprises a crane and a pin pulling device, wherein the crane comprises a lifting mechanism, the lifting mechanism is connected with the pin pulling device, the pin pulling device comprises a pin pulling oil cylinder and a pin shaft connecting device, the pin pulling oil cylinder is horizontally arranged, and the extending end of a piston rod of the pin pulling oil cylinder is connected with the pin shaft connecting device. The invention has the advantages that: the efficiency of the round pin axle dismantlement has been improved, has improved the construction security, adopts hydraulic control, and remote operation has reduced the input of manpower, material resources, has practiced thrift the cost.
Description
Technical Field
The invention relates to the field of mine hydraulic support pin shaft dismounting, in particular to a hydraulic support pin shaft dismounting device.
Background
Along with the improvement of the production capacity of mines, fully mechanized mining equipment gradually develops to large and heavy industries, and a large mining height hydraulic support becomes a main frame of the mine. The hydraulic support is influenced by the reasons of insufficient height, width and inclined shaft lifting capacity of a transportation roadway, and the like, and is required to be disassembled into a plurality of scattered parts for transportation and installation, and all the parts are hinged by adopting pin shafts. The hinge pin of the large-mining-height bracket is small in size, heavy in weight and high in position, when the hydraulic bracket pin is dismounted in a traditional mode, an anchor rod needs to be beaten at the roadway side part at the corresponding position of the pin as a pin pulling rooting point, and then the pin is pulled out by a chain block matched with a pin connecting device. The problem that the hydraulic support round pin axle exists is dismantled to traditional mode: 1. the anchor rod is required to be beaten on the roadway side part, and the anchor rod is easy to pull out due to the fact that the coal body of the roadway side part is soft and difficult to construct; 2. when the pin shaft is pulled out, the chain block is required to be matched with and lifted or directly landed, so that larger impact is generated, the pin shaft is easy to collapse, and the potential safety hazard is larger; 3. the pin shaft is required to be manually carried after being dismantled, so that more labor is consumed, and the labor intensity is high.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hydraulic support pin shaft dismounting device with improved pin shaft dismounting efficiency.
The invention solves the technical problems through the following technical scheme: the hydraulic support pin shaft dismounting device comprises a crane and a pin pulling device, wherein the crane comprises a lifting mechanism, the lifting mechanism is connected with the pin pulling device, the pin pulling device comprises a pin pulling oil cylinder (17) and a pin shaft connecting device (19), the pin pulling oil cylinder (17) is horizontally arranged, and a piston rod extending end of the pin pulling oil cylinder (17) is connected with the pin shaft connecting device (19).
As an optimized technical scheme, the pin pulling device also comprises a sleeve (18), wherein the sleeve (18) is horizontally arranged, one end of the sleeve (18) is connected with the fixed end of the cylinder barrel of the pin pulling oil cylinder (17),
as an optimized technical scheme, the pin shaft connecting device (19) adopts a pull ring, and the extending end of a piston rod of the pin pulling oil cylinder (17) is connected with the ring part of the pull ring.
As an optimized technical scheme, the pin pulling device further comprises a connecting rope (15) and connecting rings (16), one connecting ring (16) is respectively arranged on two sides of the joint of the pin pulling oil cylinder (17) and the sleeve (18), two ends of the connecting rope (15) are respectively connected with the two connecting rings (16), and the lifting mechanism is connected with the connecting rope (15).
As an optimized technical scheme, the crane further comprises a vertical rod (1), and the vertical rod (1) is vertically arranged; the lifting mechanism comprises a lifting oil cylinder (3), a cantilever oil cylinder (4), a diagonal oil cylinder (5), a fixed pulley, a second movable pulley (9) and a sling (10); the lifting oil cylinder (3) is vertically fixed in the middle of the vertical rod (1), and the fixed pulley is fixed above the lifting oil cylinder (3); one end of the cantilever oil cylinder (4) is rotationally connected to the middle part of the vertical rod (1), and the other end of the cantilever oil cylinder is connected with the second movable pulley (9); one end of the cable-stayed oil cylinder (5) is rotationally connected to the upright rod (1) positioned above the connecting end of the cantilever oil cylinder (4), and the other end of the cable-stayed oil cylinder is connected to the cantilever oil cylinder (4); one end of the sling (10) is fixed at the upper end of the lifting oil cylinder (3), and the other end of the sling (10) sequentially bypasses the fixed pulley and the second movable pulley (9) and then is connected with a pin pulling device.
As an optimized technical scheme, the vertical rod (1) is of a hollow structure, the lifting oil cylinder (3) and the fixed pulley are fixed in a cavity in the middle of the vertical rod (1), and the middle of the sling (10) passes through the fixed pulley and then passes through an opening in the side wall of the vertical rod (1), and then passes through the second movable pulley (9).
As the technical scheme of optimizing, fixed pulley includes first fixed pulley (6) and second fixed pulley (8), arrange about first fixed pulley (6) and second fixed pulley (8) and connect in pole setting (1), be connected with first movable pulley (7) on lifting cylinder (3), the middle part of hoist cable (10) is walked around in proper order first fixed pulley (6), first movable pulley (7), second fixed pulley (8), second movable pulley (9) back connect and pull out the round pin device.
As an optimized technical scheme, the crane further comprises a base (2), and the vertical rod (1) is fixed on one side of the base (2).
As an optimized technical scheme, the crane further comprises a rotating mechanism, wherein the rotating mechanism comprises a double-acting double-piston-rod oil cylinder (12), a transverse shaft (13) and a pull rope (14); the double-acting double-piston-rod oil cylinder (12) is horizontally fixed on one side of the vertical rod (1), the transverse shaft (13) is horizontally fixed on the other side of the vertical rod (1) corresponding to the double-acting double-piston-rod oil cylinder (12), and the transverse shaft (13) is perpendicular to the double-acting double-piston-rod oil cylinder (12); the two ends of the pull rope (14) are respectively connected to piston rods at the two ends of the double-acting double-piston-rod oil cylinder (12), and the middle part of the pull rope (14) is connected to the middle part of the transverse shaft (13).
As an optimized technical scheme, the crane further comprises a fixing seat (11), the fixing seat (11) is connected to the vertical rod (1) above the lifting mechanism, and the double-acting double-piston-rod oil cylinder (12) is fixed on the fixing seat (11).
The invention has the advantages that: the efficiency of the round pin axle dismantlement has been improved, has improved the construction security, adopts hydraulic control, and remote operation has reduced the input of manpower, material resources, has practiced thrift the cost.
Drawings
Fig. 1 is a schematic structural view of a hydraulic support pin dismounting device of the invention.
Fig. 2 is a schematic structural view of a rotation mechanism of the crane of the present invention.
Fig. 3 is a schematic structural view of the lifting cylinder, the first fixed pulley, the first movable pulley and the second fixed pulley of the present invention.
Detailed Description
As shown in fig. 1-3, the hydraulic support pin dismounting device comprises a crane and a pin pulling device.
The crane comprises a vertical rod 1, a base 2, a fixed seat 11, a lifting mechanism and a rotating mechanism.
The vertical pole 1 is vertically fixed on one side of the base 2, three vertically arranged slotted holes are formed in the lower portion of the vertical pole 1, and a connecting device corresponding to the slotted holes is arranged on the base 2.
The lifting mechanism comprises a lifting oil cylinder 3, a cantilever oil cylinder 4, a diagonal oil cylinder 5, a first fixed pulley 6, a first movable pulley 7, a second fixed pulley 8, a second movable pulley 9 and a sling 10.
The vertical rod 1 is of a hollow structure, a cylinder barrel of the lifting oil cylinder 3 is vertically fixed in a cavity in the middle of the vertical rod 1 through a fixing device, a piston rod of the lifting oil cylinder 3 is connected above the cylinder barrel of the lifting oil cylinder in a telescopic manner, and a first movable pulley 7 is connected to the extending end of the piston rod of the lifting oil cylinder 3.
The first fixed pulley 6 and the second fixed pulley 8 are arranged up and down and connected above the lifting oil cylinder 3 in the vertical rod 1.
The fixed end of the cylinder barrel of the cantilever cylinder 4 is rotatably connected to the middle part of the outer side of the vertical rod 1, and the second movable pulley 9 is connected to the extending end of the piston rod of the cantilever cylinder 4.
The fixed end of the cylinder barrel of the inclined-pull oil cylinder 5 is rotationally connected to the outer side of the upright rod 1 above the connecting end of the cantilever oil cylinder 4, and the extending end of the piston rod of the inclined-pull oil cylinder 5 is connected to the cylinder barrel of the cantilever oil cylinder 4.
One end of a sling 10 is fixed on a piston rod of the lifting oil cylinder 3, the other end of the sling 10 sequentially bypasses the first fixed pulley 6, the first movable pulley 7, the second fixed pulley 8 and the second movable pulley 9 and then is connected with a pin pulling device, an opening is formed in the side wall of the upright 1 corresponding to the second fixed pulley 8, and the sling 10 penetrates out of the opening.
The rotating mechanism comprises a double-acting double-piston-rod oil cylinder 12, a transverse shaft 13 and a pull rope 14.
The fixed seat 11 is connected to one side of the vertical rod 1 above the hoisting mechanism, and the double-acting double-piston rod oil cylinder 12 is horizontally fixed on the fixed seat 11; the transverse shaft 13 is horizontally fixed on the other side of the upright 1 corresponding to the double-acting double-piston rod oil cylinder 12, and the transverse shaft 13 is vertical to the double-acting double-piston rod oil cylinder 12; the two ends of the pull rope 14 are respectively connected with the end parts of the piston rods at the two ends of the double-acting double-piston-rod oil cylinder 12, and the middle part of the pull rope 14 is connected with the middle part of the transverse shaft 13.
The stretching of the piston rods at the two ends of the double-acting double-piston-rod oil cylinder 12 drives the pull rope 14 to pull the transverse shaft 13 to move in different directions, so that the vertical rod 1 is driven to rotate around the central axis of the vertical rod to one side or the other side.
The pin pulling device comprises a connecting rope 15, a connecting ring 16, a pin pulling oil cylinder 17, a sleeve 18 and a pin shaft connecting device 19.
The pin pulling oil cylinder 17 and the sleeve 18 are horizontally arranged, one end of the sleeve 18 is connected with the fixed end of the cylinder barrel of the pin pulling oil cylinder 17 through a bolt, the pin shaft connecting device 19 adopts a pull ring, and the extending end of the piston rod of the pin pulling oil cylinder 17 is connected with the ring part of the pull ring.
Two connecting rings 16 are respectively arranged at two sides of the joint of the pin pulling cylinder 17 and the sleeve 18, the two connecting rings 16 are respectively fixed on a cylinder barrel of the pin pulling cylinder 17 and the outer wall of the sleeve 18, two ends of the connecting rope 15 are respectively connected with the two connecting rings 16, and the sling 10 is connected in the middle of the connecting rope 15.
When the hydraulic support pin shaft dismounting device is used for dismounting the pin shaft, firstly, the hydraulic support is beaten to the corresponding position of the crane, and then the hydraulic support is stopped and locked firmly; then the upright rod 1 is rotated through the double-acting double-piston rod oil cylinder 12, the sling 10 is driven to move through the lifting oil cylinder 3, the cantilever oil cylinder 4 and the inclined pulling oil cylinder 5, the position of the pin pulling device is adjusted, the sleeve 18 is propped against the hydraulic support, and the pin shaft connecting device 19 is opposite to the pin shaft to be removed; then the piston rod of the pin pulling cylinder 17 extends out to enable the connecting end of the pull ring of the pin connecting device 19 to be fixedly connected with the pin to be removed, and the piston rod of the pin pulling cylinder 17 is contracted to pull out the pin to be removed; finally, the upright rod 1 is rotated through the double-acting double-piston rod oil cylinder 12, the sling 10 is driven to move through the lifting oil cylinder 3, the cantilever oil cylinder 4 and the inclined pulling oil cylinder 5, the position of the pin pulling device is adjusted, the detached pin is placed at a construction position which is not affected, and the pin is detached. The lifting oil cylinder 3, the cantilever oil cylinder 4, the inclined pulling oil cylinder 5, the double-acting double-piston rod oil cylinder 12 and the pin pulling oil cylinder 17 are controlled remotely through the hydraulic control valve, and can be completed by only 1 operator, so that the operator is far away from the falling and swinging range of the weight during lifting and moving of the weight, and the construction safety is improved.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (7)
1. The utility model provides a hydraulic support round pin axle dismounting device which characterized in that: the lifting mechanism is connected with the pin pulling device, the pin pulling device comprises a pin pulling oil cylinder (17) and a pin shaft connecting device (19), the pin pulling oil cylinder (17) is horizontally arranged, and the extending end of a piston rod of the pin pulling oil cylinder (17) is connected with the pin shaft connecting device (19);
the pin pulling device further comprises a sleeve (18), wherein the sleeve (18) is horizontally arranged, and one end of the sleeve (18) is connected with the fixed end of the cylinder barrel of the pin pulling oil cylinder (17);
the crane further comprises a vertical rod (1), and the vertical rod (1) is vertically arranged; the lifting mechanism comprises a lifting oil cylinder (3), a cantilever oil cylinder (4), a diagonal oil cylinder (5), a fixed pulley, a second movable pulley (9) and a sling (10); the lifting oil cylinder (3) is vertically fixed in the middle of the vertical rod (1), and the fixed pulley is fixed above the lifting oil cylinder (3); one end of the cantilever oil cylinder (4) is rotationally connected to the middle part of the vertical rod (1), and the other end of the cantilever oil cylinder is connected with the second movable pulley (9); one end of the cable-stayed oil cylinder (5) is rotationally connected to the upright rod (1) positioned above the connecting end of the cantilever oil cylinder (4), and the other end of the cable-stayed oil cylinder is connected to the cantilever oil cylinder (4); one end of the sling (10) is fixed at the upper end of the lifting oil cylinder (3), and the other end of the sling (10) sequentially bypasses the fixed pulley and the second movable pulley (9) and then is connected with a pin pulling device;
the crane also comprises a rotating mechanism, wherein the rotating mechanism comprises a double-acting double-piston-rod oil cylinder (12), a transverse shaft (13) and a pull rope (14); the double-acting double-piston-rod oil cylinder (12) is horizontally fixed on one side of the vertical rod (1), the transverse shaft (13) is horizontally fixed on the other side of the vertical rod (1) corresponding to the double-acting double-piston-rod oil cylinder (12), and the transverse shaft (13) is perpendicular to the double-acting double-piston-rod oil cylinder (12); the two ends of the pull rope (14) are respectively connected to piston rods at the two ends of the double-acting double-piston-rod oil cylinder (12), and the middle part of the pull rope (14) is connected to the middle part of the transverse shaft (13).
2. The hydraulic bracket pin removal device of claim 1, wherein: the pin shaft connecting device (19) adopts a pull ring, and the extending end of a piston rod of the pin pulling oil cylinder (17) is connected with the ring part of the pull ring.
3. The hydraulic bracket pin removal device of claim 1, wherein: the pin pulling device further comprises a connecting rope (15) and connecting rings (16), one connecting ring (16) is respectively arranged on two sides of the joint of the pin pulling oil cylinder (17) and the sleeve (18), two connecting rings (16) are respectively connected with two ends of the connecting rope (15), and the hoisting mechanism is connected with the connecting rope (15).
4. The hydraulic bracket pin removal device of claim 1, wherein: the vertical rod (1) is of a hollow structure, the lifting oil cylinder (3) and the fixed pulley are fixed in a cavity in the middle of the vertical rod (1), and the middle of the sling (10) passes through the fixed pulley and then passes through an opening in the side wall of the vertical rod (1) and then passes through the second movable pulley (9).
5. The hydraulic bracket pin removal device of claim 1, wherein: the fixed pulleys comprise a first fixed pulley (6) and a second fixed pulley (8), the first fixed pulley (6) and the second fixed pulley (8) are vertically arranged and connected in the vertical rod (1), a first movable pulley (7) is connected on the lifting oil cylinder (3), and the middle part of the sling (10) sequentially bypasses the first fixed pulley (6), the first movable pulley (7), the second fixed pulley (8) and the second movable pulley (9) and then is connected with a pin pulling device.
6. The hydraulic bracket pin removal device of claim 1, wherein: the crane further comprises a base (2), and the upright rod (1) is fixed on one side of the base (2).
7. The hydraulic bracket pin removal device of claim 1, wherein: the crane further comprises a fixing seat (11), the fixing seat (11) is connected to the upright rod (1) above the lifting mechanism, and the double-acting double-piston-rod oil cylinder (12) is fixed on the fixing seat (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711450510.9A CN107971733B (en) | 2017-12-27 | 2017-12-27 | Hydraulic support pin shaft dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711450510.9A CN107971733B (en) | 2017-12-27 | 2017-12-27 | Hydraulic support pin shaft dismounting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107971733A CN107971733A (en) | 2018-05-01 |
| CN107971733B true CN107971733B (en) | 2024-03-12 |
Family
ID=62007856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711450510.9A Active CN107971733B (en) | 2017-12-27 | 2017-12-27 | Hydraulic support pin shaft dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107971733B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843417B (en) * | 2020-07-24 | 2021-08-03 | 中国核动力研究设计院 | Remote dismantling process for indoor equipment with strong heat release |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120072528A (en) * | 2010-12-24 | 2012-07-04 | 현대중공업 주식회사 | Boom center pin press-fit apparatus for an excavator |
| CN203031245U (en) * | 2013-01-13 | 2013-07-03 | 济宁精锐液压有限公司 | Bucket pin assembling device |
| CN203439966U (en) * | 2013-09-05 | 2014-02-19 | 中联重科股份有限公司 | Counter weight bottom plate and plug pin mechanism thereof |
| CN203484877U (en) * | 2013-08-05 | 2014-03-19 | 林依楠 | Pin-removing machine |
| CN203513159U (en) * | 2013-10-11 | 2014-04-02 | 上海大屯能源股份有限公司 | Equipment used for hoisting and loading downhole chutes |
| CN203568755U (en) * | 2013-11-28 | 2014-04-30 | 张华� | Telpher for house decoration |
| CN204248361U (en) * | 2014-09-30 | 2015-04-08 | 山东瑞迈凯矿业装备有限公司 | Large-diameter hydraulic jack dismounting maintenance unit |
| CN204381781U (en) * | 2014-11-25 | 2015-06-10 | 惊天智能装备股份有限公司 | Connector disassembles robot |
| CN206277119U (en) * | 2016-12-26 | 2017-06-27 | 许昌学院 | The quick extracting apparatus of hydraulic support bearing pin |
| CN206299134U (en) * | 2016-12-22 | 2017-07-04 | 王大伟 | One kind is without counterweight fulcrum type hand grasp type wallboard mounting machine |
| CN207888185U (en) * | 2017-12-27 | 2018-09-21 | 淮南矿业(集团)有限责任公司 | Hydraulic support detaching device for pin shaft |
-
2017
- 2017-12-27 CN CN201711450510.9A patent/CN107971733B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120072528A (en) * | 2010-12-24 | 2012-07-04 | 현대중공업 주식회사 | Boom center pin press-fit apparatus for an excavator |
| CN203031245U (en) * | 2013-01-13 | 2013-07-03 | 济宁精锐液压有限公司 | Bucket pin assembling device |
| CN203484877U (en) * | 2013-08-05 | 2014-03-19 | 林依楠 | Pin-removing machine |
| CN203439966U (en) * | 2013-09-05 | 2014-02-19 | 中联重科股份有限公司 | Counter weight bottom plate and plug pin mechanism thereof |
| CN203513159U (en) * | 2013-10-11 | 2014-04-02 | 上海大屯能源股份有限公司 | Equipment used for hoisting and loading downhole chutes |
| CN203568755U (en) * | 2013-11-28 | 2014-04-30 | 张华� | Telpher for house decoration |
| CN204248361U (en) * | 2014-09-30 | 2015-04-08 | 山东瑞迈凯矿业装备有限公司 | Large-diameter hydraulic jack dismounting maintenance unit |
| CN204381781U (en) * | 2014-11-25 | 2015-06-10 | 惊天智能装备股份有限公司 | Connector disassembles robot |
| CN206299134U (en) * | 2016-12-22 | 2017-07-04 | 王大伟 | One kind is without counterweight fulcrum type hand grasp type wallboard mounting machine |
| CN206277119U (en) * | 2016-12-26 | 2017-06-27 | 许昌学院 | The quick extracting apparatus of hydraulic support bearing pin |
| CN207888185U (en) * | 2017-12-27 | 2018-09-21 | 淮南矿业(集团)有限责任公司 | Hydraulic support detaching device for pin shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107971733A (en) | 2018-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107217910A (en) | Supply line's electric pole plants lever apparatus and its plants bar method | |
| CN110685433A (en) | Chimney construction device and construction method applying hydraulic lifting and rollover technology | |
| CN107971733B (en) | Hydraulic support pin shaft dismounting device | |
| CN210289811U (en) | Crane externally-hung anchor rod drilling machine | |
| CN109441361A (en) | A kind of pile frame and its vertical mast method | |
| CN112878330A (en) | Precast pile sinking equipment and construction method thereof | |
| CN104234030B (en) | Automatic hooking, height fixing and unhooking dynamic compaction machine | |
| CN206157725U (en) | Stirring adds core pile pile and lock pin integration equipment | |
| CN210195661U (en) | Prospecting drill convenient to cross abrupt bank | |
| CN210393466U (en) | Construction device for pile foundation engineering | |
| CN209163736U (en) | A kind of pile frame | |
| CN207888185U (en) | Hydraulic support detaching device for pin shaft | |
| CN103882852A (en) | Rammer release device of dynamic compactor | |
| CN214832698U (en) | Precast pile sinking equipment | |
| CN209025652U (en) | Mule head of beam pumping unit automatic turning device | |
| CN210176408U (en) | Multifunctional arch center mounting platform | |
| JP6810181B2 (en) | Drilling equipment and drilling method | |
| RU2455489C1 (en) | Shaft drill loader | |
| CN113585860A (en) | Device and method for mounting and dismounting double-arm holding pole | |
| CN202117077U (en) | Manhole cover opening device | |
| CN206719178U (en) | One kind forces closing device and system | |
| CN218909621U (en) | Prefabricated pit shaft hoist and mount specialized tool | |
| CN105178894A (en) | Auxiliary drill-rod mounting/demounting device | |
| CN201666161U (en) | Mechanical type mining tunnel timbering machine | |
| CN220537368U (en) | High hanging type safety rope device for crawler crane arm support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |