CN110467120A - A kind of Percussion Piles automatic hoist engine and working method - Google Patents
A kind of Percussion Piles automatic hoist engine and working method Download PDFInfo
- Publication number
- CN110467120A CN110467120A CN201810433693.1A CN201810433693A CN110467120A CN 110467120 A CN110467120 A CN 110467120A CN 201810433693 A CN201810433693 A CN 201810433693A CN 110467120 A CN110467120 A CN 110467120A
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- Prior art keywords
- shaft
- reel
- excircle
- planetary reducer
- fixed
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- Pending
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- 238000009527 percussion Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 35
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000008439 repair process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/20—Chain, belt, or friction drives, e.g. incorporating sheaves of fixed or variable ratio
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/22—Planetary or differential gearings, i.e. with planet gears having movable axes of rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a kind of automatic hoist engines of Percussion Piles, including chassis, first bearing seat, second bearing seat, planetary reducer and motor, first bearing seat and second bearing seat are fixed on chassis, first bearing seat connects planetary reducer output shaft, planetary reducer output shaft is connected with planetary reducer, planetary reducer is fixed with input shaft, planetary reducer excircle is cased with first sliding axle and holds, input shaft outer sheath has hollow shaft, hollow shaft excircle is cased with spring take-up, second sliding axle is held, plane bearing, double-head rectangular worm drive component, second sliding axle holds excircle dead block, input shaft is connected with big belt pulley, cuticle tep reel is connected on the right side of motor, big belt pulley and cuticle tep reel are connected with c-type V belt, driving shaft friction disc is fixed on the left of planetary reducer, friction circle on driven shaft is fixed on reel Disk, the present invention has the advantages that high-efficient, energy consumption is low, low noise, long service life, high reliablity, repairs less, construction quality is high.
Description
Technical field
The present invention relates to foundation construction machinery field more particularly to a kind of Percussion Piles automatic hoist engine and working methods.
Background technique
Hoist engine is the light and small heavy-duty hoisting equipment with reel winding wire ropes or chain lifting or traction, is also known as twisted
Vehicle.Hoist engine can with vertical-lift, horizontally or diagonally drag and draw weight.Hoist engine is divided into two kinds of manual hoist, automatic hoist engine,
And automatic hoist engine is divided into electrical hoist and hydraulic winch, now based on automatic hoist engine.
The hoist engine of existing Percussion Piles is all made of traditional JKL, JK or 2JK manual control fast winch, technological obsolescence,
Low efficiency, noise are big, vibration is big, frequency of maintenance is high, energy consumption is high, a large amount of lubricating oil (butter) are excessive is difficult clearly at the construction field (site)
Reason, causes the pollution of surrounding enviroment, more influences the duration of construction, and construction quality is also difficult to improve.
Summary of the invention
The purpose of the present invention is to solve the deficiency of the above background technology, provides a kind of Percussion Piles automatic hoist engine,
Its is high-efficient, energy consumption is low, low noise, long service life, high reliablity, repairs less, construction quality height.
To solve the above problems, the present invention adopts the following technical scheme:
A kind of automatic hoist engine of Percussion Piles, including chassis, first bearing seat, second bearing seat, planetary reducer and motor, institute
It states first bearing seat and second bearing seat is separately fixed on the left and right side of chassis, be connected with row on the right side of the first bearing seat
The right-hand end of star speed reducer output shaft, the planetary reducer output shaft is connected with planetary reducer, the planetary reducer
Right-hand end be fixed with an input shaft, the planetary reducer excircle, which is located at right side end position and is cased with first sliding axle, to be held,
The periphery of the input shaft is cased with hollow shaft, is cased with bullet on the hollow shaft excircle and close to planetary reducer side
Spring tensioning apparatus on the hollow shaft excircle and is located at and is cased with second sliding axle on the right side of spring take-up and holds, and described second
Sliding bearing outer circumferential sides are fixed with reel, on the hollow shaft excircle and are located on the right side of reel and are cased with plane bearing, described
Double-head rectangular worm drive component is cased on hollow shaft excircle and on the right side of plane bearing, the input shaft right-hand end connects
It is connected to big belt pulley, the right-hand end of the motor is connected with cuticle tep reel, is connected with C between the big belt pulley and cuticle tep reel
Type V belt, the planetary reducer excircle left-hand end are fixed with driving shaft friction disc, outside the left-hand end of the reel
Friction disc on driven shaft is further fixed on circumference.
Further technical solution is to be fixed with bearing pedestal, the second bearing on the right side of the second bearing seat
Seat inside is fixed with double-row self-aligning roller bearing, and the double-row self-aligning roller bearing sleeve is at hollow shaft right-hand end excircle, institute
It states and is fixed with straight roller bearing on the inside of bearing pedestal, the straight roller bearing is covered in input shaft right-hand end excircle
Place.
Further technical solution is that the spring take-up includes the spring base covered in hollow shaft left-hand end, described
Spring is also cased on the inside of spring base and on hollow shaft excircle.
Further technical solution is that the double-head rectangular worm drive component includes being fixed on hollow shaft periphery
Screw rod, the periphery of the screw rod are also connected with the nut connecting with screw flight.
Another technical problem to be solved by the present invention is that providing a kind of high-efficient, operation automatic elevator of convenient and fast Percussion Piles
The working method of machine.
In order to solve the above technical problems, the present invention adopts the following technical scheme: the following steps are included: motor opens 1), first
It moves and rotates, belt lace disc spins are driven after rotation, cuticle tep reel drives big belt disc spins by c-type V belt；2), big
Band driven input shaft rotates after the rotation of belt disc spins, and input shaft rotation rotates the hollow shaft in outside also and then；3), hollow shaft turns
It is connect using the screw rod being fixed on its excircle with nut thread after dynamic, nut is promoted to move to the left；4) after, nut is mobile
Subject plane bearing moves to the left and moves entire reel to the left, and upper cunning is held in first sliding axle in the left side inner end of reel
It is dynamic；5) so that friction disc on driven shaft is moved and is contacted with each other to the left with driving shaft friction disc after, reel is mobile, promote from
Friction disc and driving shaft friction disc are integrated formula structure on moving axis, make reel that input shaft be followed to rotate；6), reel is to the left
The reel of holddown spring seat during side is mobile, and compressed spring to the left, rotation carries out coiling；7), last planetary reduction gear
Machine, which slow down, to be made input shaft slow down and slowly stops, and due to compressed spring spring-force driven dual, moves reel to the right, driven
Friction disc and the separation of driving shaft friction disc, reel opposite direction are rotated on axis, realize effect of dropping hammer.
The beneficial effects of the present invention are:
The present invention is passed through by being equipped with friction disc on driving shaft friction disc and driven shaft on planetary reducer and reel
Motor band driven input shaft rotates, and makes double-head rectangular worm drive component or so end is mobile reel left and right sides is promoted to be displaced, to make
It is contacting and separating between friction disc on driving shaft friction disc and driven shaft, band movable reel rotates, and the reel of rotation drives punching
Dropping hammer on hole stake machine pumps to be punched, and total is with high-efficient, energy consumption is low, low noise, uses the longevity
It orders length, high reliablity, repair less, the advantage that construction quality is high.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of the automatic hoist engine of Percussion Piles of the present invention；
Fig. 2 is a kind of schematic diagram of the Percussion Piles of the present invention with automatic hoist engine when using stake is rushed；
Fig. 3 is a kind of schematic diagram of Percussion Piles spring take-up in automatic hoist engine of the present invention；
Fig. 4 is a kind of schematic diagram of Percussion Piles double-head rectangular worm drive component in automatic hoist engine of the present invention.
In Fig. 1-4: 1- first bearing seat, 2- driving shaft friction disc, friction disc on 3- driven shaft, 4- reel,
5- first sliding axle is held, 6- hollow shaft, 7- spring take-up, 8- second sliding axle are held, 9- plane bearing, 10- are bis-
Head rectangular coil transmission component, 11- second bearing seat, 12- double-row self-aligning roller bearing, 13- bearing pedestal, 14-
The big belt pulley of input shaft, 15-, 16- straight roller bearing, 17-C type V belt, 18- motor, 19- cuticle tep reel,
20- planetary reducer, 21- planetary reducer output shaft, 22- chassis.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Referring to FIG. 1 to 4, the automatic hoist engine of a kind of Percussion Piles, including chassis 22, first bearing seat 1, the second axis
Seat 11, planetary reducer 20 and motor 18 are held, the first bearing seat 1 and second bearing seat 11 are separately fixed at a left side for chassis 22
On right-hand end, planetary reducer output shaft 21 is connected on the right side of the first bearing seat 1, the planetary reducer output shaft 21
Right-hand end is connected with planetary reducer 20, and the right-hand end of the planetary reducer 20 is fixed with an input shaft 14, the row
20 excircle of star speed reducer, which is located at right side end position and is cased with first sliding axle, holds 5, and the periphery set of the input shaft 14 is free
Mandrel 6 is cased with spring take-up 7, the hollow shaft 6 on 6 excircle of hollow shaft and close to 20 side of planetary reducer
It is cased with second sliding axle on excircle and on the right side of spring take-up 7 and holds 8, it is solid that the second sliding axle holds 8 outer circumferential sides
Surely there is a reel 4, on 6 excircle of hollow shaft and be located on the right side of reel 4 and be cased with plane bearing 9,6 excircle of hollow shaft
It above and on the right side of plane bearing 9 is cased with double-head rectangular worm drive component 10,14 right-hand end of input shaft is connected with great Pi
Tep reel 15, the right-hand end of the motor 18 are connected with cuticle tep reel 19, connect between the big belt pulley 15 and cuticle tep reel 19
There is c-type V belt 17, the 20 excircle left-hand end of planetary reducer is fixed with driving shaft friction disc 2, the reel 4
Friction disc 3 on driven shaft are further fixed on left-hand end excircle.
It is fixed with bearing pedestal 13 on the right side of the second bearing seat 11, is fixed on the inside of the second bearing seat 11 double
Column self aligning roller bearing 12,12 sets of the double-row self-aligning roller bearing at 6 right-hand end excircle of hollow shaft, the end cover type axis
It holds and is fixed with straight roller bearing 16 on the inside of seat 13,16 sets of the straight roller bearing at 14 right-hand end excircle of input shaft.
The spring take-up 7 includes the spring base 71 covered in 6 left-hand end of hollow shaft, on the inside of the spring base 71 and is located at hollow
Spring 72 is also cased on 6 excircle of axis.The double-head rectangular worm drive component 10 includes being fixed on 6 periphery of hollow shaft
Screw rod 101, the periphery of the screw rod 101 are also connected with the nut 102 being threadedly coupled with screw rod 101.
The present invention adopts the following technical scheme: the following steps are included: motor 18 starts and rotates, band after rotation 1), first
Dynamic cuticle tep reel 19 rotates, and cuticle tep reel 19 drives big belt pulley 15 to rotate by c-type V belt 17；2), big belt pulley 15
Band driven input shaft 14 rotates after rotation rotation, and input shaft 14, which rotates, rotates the hollow shaft 6 in outside also and then；3), 6 turns of hollow shaft
It is threadedly coupled using the screw rod 101 being fixed on its excircle with nut 102 after dynamic, nut 102 is promoted to move to the left；4),
Subject plane bearing 9 moves to the left and moves entire reel 4 to the left after nut 102 is mobile, and the left side inner end of reel 4 exists
First sliding axle is held and is slided on 5；5) make on driven shaft after, reel 4 is mobile friction disc 3 move to the left and with driving shaft friction
Disk 2 contacts with each other, and friction disc 3 and driving shaft friction disc 2 is promoted on driven shaft to be integrated formula structure, make reel 4 with
Input shaft 14 rotate；6) holddown spring seat 71 during, reel 4 moves to the left, and compressed spring 72 to the left, rotation
Reel 4 carry out coiling；7), last planetary reducer 20 slow down and so that input shaft 14 is slowed down and slowly stop, due to compression
72 spring-force driven dual of spring, moves reel 4 to the right, and friction disc 3 and driving shaft friction disc 2 separate on driven shaft, volume
4 opposite directions of cylinder are rotated, and realize effect of dropping hammer.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work should all be covered subject to the scope of the present invention.
Claims (5)
1. a kind of automatic hoist engine of Percussion Piles, including chassis, first bearing seat, second bearing seat, planetary reducer and motor,
It is characterized by: the first bearing seat and second bearing seat are separately fixed on the left and right side of chassis, the first bearing
Seat right side is connected with planetary reducer output shaft, and the right-hand end of the planetary reducer output shaft is connected with planetary reducer,
The right-hand end of the planetary reducer is fixed with an input shaft, and the planetary reducer excircle is located at right side end position and is cased with
First sliding axle is held, and the periphery of the input shaft is cased with hollow shaft, on the hollow shaft excircle and close to planetary reduction gear
Machine side is cased with spring take-up, on the hollow shaft excircle and is located on the right side of spring take-up and is cased with the second sliding
Bearing, the second sliding axle hold outer circumferential sides and are fixed with reel, on the hollow shaft excircle and are located on the right side of reel and are cased with
Plane bearing on the hollow shaft excircle and is located on the right side of plane bearing and is cased with double-head rectangular worm drive component, described defeated
Enter axis right-hand end and be connected with big belt pulley, the right-hand end of the motor is connected with cuticle tep reel, the big belt pulley and belt lace
C-type V belt is connected between disk, the planetary reducer excircle left-hand end is fixed with driving shaft friction disc, the volume
Friction disc on driven shaft is further fixed on the left-hand end excircle of cylinder.
2. a kind of automatic hoist engine of Percussion Piles according to claim 1, it is characterised in that: on the right side of the second bearing seat
It is fixed with bearing pedestal, is fixed with double-row self-aligning roller bearing, the double-row self-aligning roller on the inside of the second bearing seat
Bearing holder (housing, cover) is fixed with straight roller bearing at hollow shaft right-hand end excircle on the inside of the bearing pedestal, described common
Roller bearing sleeve is at input shaft right-hand end excircle.
3. a kind of automatic hoist engine of Percussion Piles according to claim 1, it is characterised in that: the spring take-up packet
It includes the spring base covered in hollow shaft left-hand end, on the inside of the spring base and is located on hollow shaft excircle and is also cased with spring.
4. a kind of automatic hoist engine of Percussion Piles according to claim 1, it is characterised in that: the double-head rectangular spiral passes
Dynamic component includes the screw rod for being fixed on hollow shaft periphery, and the periphery of the screw rod is also connected with to be connect with screw flight
Nut.
5. a kind of working method of the automatic hoist engine of Percussion Piles as described in claim 1, which is characterized in that including following step
It is rapid:
1) it, electric motor starting and rotates first, belt lace disc spins is driven after rotation, cuticle tep reel is driven by c-type V belt
Big belt disc spins；
2), band driven input shaft rotates after big belt disc spins rotation, and input shaft rotation rotates the hollow shaft in outside also and then；
3) it, is connect using the screw rod being fixed on its excircle with nut thread after hollow shaft rotation, promotes nut sidesway to the left
It is dynamic；
4) subject plane bearing moves to the left and moves entire reel to the left after, nut is mobile, the left side inner end of reel
Upper sliding is held in first sliding axle；
5) so that friction disc on driven shaft is moved and is contacted with each other to the left with driving shaft friction disc after, reel is mobile, promote
Friction disc and driving shaft friction disc are integrated formula structure on driven shaft, make reel that input shaft be followed to rotate；
6) reel of holddown spring seat during, reel moves to the left, and compressed spring to the left, rotation carries out coiling；
7), last planetary reducer slow down and so that input shaft is slowed down and slowly stop, and due to compressed spring spring-force driven dual, makes
Reel moves to the right, and friction disc and the separation of driving shaft friction disc, reel opposite direction are rotated on driven shaft, and realization is fallen
Hammer effect into shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810433693.1A CN110467120A (en) | 2018-05-09 | 2018-05-09 | A kind of Percussion Piles automatic hoist engine and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810433693.1A CN110467120A (en) | 2018-05-09 | 2018-05-09 | A kind of Percussion Piles automatic hoist engine and working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110467120A true CN110467120A (en) | 2019-11-19 |
Family
ID=68503336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810433693.1A Pending CN110467120A (en) | 2018-05-09 | 2018-05-09 | A kind of Percussion Piles automatic hoist engine and working method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110467120A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2044005U (en) * | 1986-09-30 | 1989-09-06 | 武汉地质学院 | Auto-controlling device of hammer drilling machine with winding engine |
| JPH05330793A (en) * | 1992-05-26 | 1993-12-14 | Kandenko Co Ltd | Electric winch |
| CN1456755A (en) * | 2003-01-17 | 2003-11-19 | 丁焰 | Electric two-purpose machine for piling and punching |
| CN102134963A (en) * | 2010-01-26 | 2011-07-27 | 如皋市名门电气材料有限公司 | Cylinder controlled automatic punching pile machine |
| CN102134962A (en) * | 2010-01-26 | 2011-07-27 | 如皋市名门电气材料有限公司 | Automatic punching pile driver |
| CN202164067U (en) * | 2011-07-20 | 2012-03-14 | 徐州科源液压有限公司 | Hoisting speed reducer |
| CN202369314U (en) * | 2011-11-17 | 2012-08-08 | 泰安泰山福神齿轮箱有限责任公司 | Quick release winch reducer for jaw clutch |
| CN103121640A (en) * | 2011-11-18 | 2013-05-29 | 吴小杰 | Permanent-magnet and constant-braking cycloidal reduction winch |
| CN103422505A (en) * | 2013-07-30 | 2013-12-04 | 意宁液压股份有限公司 | Full-automatic hydraulic piling machine using freely-lowering winch for driving heavy hammer |
| CN203452078U (en) * | 2013-07-30 | 2014-02-26 | 意宁液压股份有限公司 | Hydraulic full-automatic pile driver for driving heavy punch through freely-releasing winding engine |
| CN104724620A (en) * | 2015-02-07 | 2015-06-24 | 合肥工业大学 | Novel intelligent lifting equipment |
| CN205151608U (en) * | 2015-10-20 | 2016-04-13 | 启东万惠机械制造有限公司 | Free fall hoist engine |
| CN208361763U (en) * | 2018-05-09 | 2019-01-11 | 赖小明 | A kind of automatic hoist engine of punching pile machine |
-
2018
- 2018-05-09 CN CN201810433693.1A patent/CN110467120A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2044005U (en) * | 1986-09-30 | 1989-09-06 | 武汉地质学院 | Auto-controlling device of hammer drilling machine with winding engine |
| JPH05330793A (en) * | 1992-05-26 | 1993-12-14 | Kandenko Co Ltd | Electric winch |
| CN1456755A (en) * | 2003-01-17 | 2003-11-19 | 丁焰 | Electric two-purpose machine for piling and punching |
| CN102134963A (en) * | 2010-01-26 | 2011-07-27 | 如皋市名门电气材料有限公司 | Cylinder controlled automatic punching pile machine |
| CN102134962A (en) * | 2010-01-26 | 2011-07-27 | 如皋市名门电气材料有限公司 | Automatic punching pile driver |
| CN202164067U (en) * | 2011-07-20 | 2012-03-14 | 徐州科源液压有限公司 | Hoisting speed reducer |
| CN202369314U (en) * | 2011-11-17 | 2012-08-08 | 泰安泰山福神齿轮箱有限责任公司 | Quick release winch reducer for jaw clutch |
| CN103121640A (en) * | 2011-11-18 | 2013-05-29 | 吴小杰 | Permanent-magnet and constant-braking cycloidal reduction winch |
| CN103422505A (en) * | 2013-07-30 | 2013-12-04 | 意宁液压股份有限公司 | Full-automatic hydraulic piling machine using freely-lowering winch for driving heavy hammer |
| CN203452078U (en) * | 2013-07-30 | 2014-02-26 | 意宁液压股份有限公司 | Hydraulic full-automatic pile driver for driving heavy punch through freely-releasing winding engine |
| CN104724620A (en) * | 2015-02-07 | 2015-06-24 | 合肥工业大学 | Novel intelligent lifting equipment |
| CN205151608U (en) * | 2015-10-20 | 2016-04-13 | 启东万惠机械制造有限公司 | Free fall hoist engine |
| CN208361763U (en) * | 2018-05-09 | 2019-01-11 | 赖小明 | A kind of automatic hoist engine of punching pile machine |
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