CN110077966A - A kind of hydraulic pressure lift clamping jaw - Google Patents
A kind of hydraulic pressure lift clamping jaw Download PDFInfo
- Publication number
- CN110077966A CN110077966A CN201910441789.7A CN201910441789A CN110077966A CN 110077966 A CN110077966 A CN 110077966A CN 201910441789 A CN201910441789 A CN 201910441789A CN 110077966 A CN110077966 A CN 110077966A
- Authority
- CN
- China
- Prior art keywords
- clamping jaw
- driving piece
- attachment base
- piece
- clip claw
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
- B66C1/445—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces motor actuated
- B66C1/447—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces motor actuated by hydraulic or pneumatic motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Clamps And Clips (AREA)
Abstract
A kind of hydraulic pressure lift clamping jaw, comprising: support frame, support frame as described above include two horizontally arranged and parallel translation support rods, the supporting leg being installed below the translation support rod and the guide rail being installed on above the translation support rod；Movable lifting frame, the movable lifting frame includes the horizontal bracket being installed on the guide rail, the lifting attachment base below the horizontal bracket, is vertically arranged on the horizontal bracket and the lift cylinder that tailpiece of the piston rod is connect with the lifting attachment base center, the guide rod for being connected to above around the lifting attachment base vertically and passing through the horizontal bracket；Clip claw mechanism, the clip claw mechanism includes that the clamping jaw driving mechanism being connected to below the lifting attachment base and the clip claw assembly being connected to below the clamping jaw driving mechanism, the clip claw assembly have the movement of folding clamping under the action of the clamping jaw driving mechanism.
Description
Technical field
The present invention relates to heavy workpieces to promote carrying field, more specifically to a kind of hydraulic pressure lift clamping jaw.
Background technique
In the process of production and processing, it generally requires to convey the workpiece of some heavy types between different work steps, especially
It is for heavy casting, weight is big and temperature is high, and is conveyed using waggons such as fork trucks and also need to raise workpiece,
Discharging is also required to using tools such as drivings, and need it is artificial operate fork truck, low efficiency and safety is poor, therefore for heavy type
Remotely control promotes clamping jaw to be conveyed to casting mostly.Existing clamping jaw tool can only often carry out workpiece similar in size
Clamping, if the workpiece type of production is more, clamping jaw is just unable to satisfy the clamping of the especially big or especially small workpiece of some sizes,
And the accuracy of easy wobble effects workpiece discharging is not sufficiently stable during clamping, therefore be badly in need of designing a kind of safety and stability
And the strong promotion clamping jaw of grasping ability.
Summary of the invention
The present invention provides a kind of hydraulic pressure lift clamping jaw, hydraulic pressure lift clamping jaw of the invention in view of the deficiencies of the prior art
Large-scale workpiece is clamped by clip claw mechanism, then lateral transfer again after workpiece being promoted by movable lifting frame, clamping and promotion
It is all realized, can remotely be controlled using hydraulic cylinder, safe operation and labour is greatly saved；In addition, clip claw mechanism energy
Enough weight, shape, volumes according to clamping workpiece are replaced and are adjusted, and grasping ability is strong.
The specific technical solution of the present invention is as follows, a kind of hydraulic pressure lift clamping jaw, comprising:
Support frame, support frame as described above include two horizontally arranged and parallel translation support rods, are installed on the translation support rod
The supporting leg of lower section and the guide rail being installed on above the translation support rod；
Movable lifting frame, the movable lifting frame include the horizontal bracket being installed on the guide rail, are located at the horizontal bracket
The lifting attachment base of lower section, be vertically arranged on the horizontal bracket and tailpiece of the piston rod and the lifting attachment base center company
The lift cylinder connect, the guide rod for being connected to above around the lifting attachment base vertically and passing through the horizontal bracket；
Clip claw mechanism, the clip claw mechanism include the clamping jaw driving mechanism being connected to below the lifting attachment base and are connected to
Clip claw assembly below the clamping jaw driving mechanism, the clip claw assembly have folding under the action of the clamping jaw driving mechanism
The movement of clamping.
Large-scale workpiece can be clamped by the clip claw mechanism as a result, then can be by workpiece by the movable lifting frame
Lateral transfer again after promotion, is greatly saved labour.
As a preference of the present invention, being equipped with guide wheel assembly below the horizontal bracket, the guide wheel assembly includes rolling
Guide wheel and limit guide wheel, the translation for rolling cooperation above guide wheel and the guide rail and realizing support frame as described above, the limit are led
Wheel realizes the limit of support frame as described above with guide rail side cooperation.
The guide wheel assembly can make the shifting by the rolling guide wheel and being used cooperatively for limit guide wheel as a result,
Dynamic hoisting frame more smoothly moves on the guide rail.
As a preference of the present invention, the lift piston bar telescopic end is arranged downward, cylinder body lower end and the level
Bracket is affixed by bolt, and the horizontal bracket is equipped with makes the flexible through-hole passed through of piston rod, the lift piston
It is affixed by bolt between bar extension end and the lifting attachment base.
The rod chamber oil inlet of the lift cylinder just can drive the lifting attachment base to move up as a result, to realize to institute
It states clip claw mechanism and clamps the promotion of workpiece.
As a preference of the present invention, the guide rod is equipped with 4 and is distributed in around the lift cylinder, the guide rod
Between lower end and the lifting attachment base by bolt it is affixed, between shaft and the horizontal bracket by with the horizontal bracket
Fixed guide sleeve cooperation；The guide rod upper end is affixed with the same fixed block respectively.
The lifting attachment base can be made to keep horizontality in lifting process by installing the guide rod as a result,
It promotes workpiece more steady, and stationarity can be further strengthened for the guide rod is affixed by the fixed block.
As a preference of the present invention, clip claw mechanism described in being at least equipped with one group below the lifting attachment base, multiple groups institute
State the arrangement of clip claw mechanism linear array and with lifting attachment base center symmetric arrays；Clamping jaw driving mechanism described in one group
Clip claw assembly described at least driving one group.
The clip claw mechanism can install corresponding quantity according to the size and weight selectivities of clamping workpiece as a result,
To reinforce the hoisting power of the clip claw mechanism.
As a preference of the present invention, the clip claw assembly is hingedly formed by two groups of driving pieces, driven including L-shaped first
Movable plate, the second driving piece for crossing out end connection with the first driving piece and extending downwardly connect with the second driving piece
The third driving piece for connecing and being laterally extended to promptly direction, third driving piece extension end are connected separately with collet；Described
One driving piece is hinged in corner.
The clip claw assembly is by the first driving piece, the second driving piece, third driving piece and described as a result,
Collet is spliced, and corresponding driving piece and collet can be replaced according to the size and shape of workpiece.
As a preference of the present invention, the clamping jaw driving mechanism includes and installing frame affixed below the lifting attachment base
Frame, the piston rod lateral symmetry drive cylinder being installed on inside the installation frame inwardly, the drive cylinder axis direction with
First driving piece rotary moveable face is parallel, and piston rod extension end and first driving piece upper end are hinged.
The expanding-contracting action of the drive cylinder is able to drive the first driving piece and rotates by axle center of hinged place as a result,
To drive the collet folding to realize the clamping to workpiece.
Lead to as a preference of the present invention, the first driving piece crosses out end and first vertical with piece body is distributed with and connect
Hole group；Second driving piece upper end is equipped with vertical with piece body second and connect sets of vias, and second driving piece lower end is equipped with
The third vertical with piece body connect sets of vias；Third driving piece one end is equipped with the vertical with piece body the 4th and connect sets of vias,
Collet mounting hole is equipped with after the other end and the bending of piece body vertical direction；The second connection sets of vias connect through-hole with described first
It is bolted, is bolted between the 4th connection sets of vias and third connection sets of vias, institute between group
It states and is bolted between collet and the collet mounting hole.
Pass through between the first driving piece, the second driving piece, third driving piece and the collet as a result,
It is bolted, it is convenient for disassembly and assembly.
As a preference of the present invention, the first connection sets of vias is at least distributed in first driving piece lateral part
Half length and from outer end to hinged directional spreding, it is vertical that the third connection sets of vias is at least distributed in the second driving piece
Half length and be up distributed by lower end.
The relatively described first driving piece of the second driving piece is able to carry out lateral adjustments as a result, and the third drives piece
The relatively described second driving piece is able to carry out vertical adjustment.
In conclusion the invention has the following advantages:
Hydraulic pressure lift clamping jaw of the invention clamps large-scale workpiece by clip claw mechanism, then after being promoted workpiece by movable lifting frame
Lateral transfer again, clamping and being promoted all are realized using hydraulic cylinder, can remotely be controlled, safe operation and are greatly saved
Labour；In addition, clip claw mechanism can be replaced and be adjusted according to weight, shape, the volume of clamping workpiece, grasping ability
By force.
Detailed description of the invention
Fig. 1 is the main view of hydraulic pressure lift clamping jaw of the present invention；
Fig. 2 is the side view of hydraulic pressure lift clamping jaw of the present invention；
In figure, 1- support frame, 11- translation support rod, 12- supporting leg, 13- guide rail, 2- movable lifting frame, 21- horizontal bracket,
22- goes up and down attachment base, 23- lift cylinder, 24- guide rod, 25- guide sleeve, 26- guide wheel assembly, 261- and rolls guide wheel, 262- limit
Position guide wheel, 27- fixed block, 3- clip claw mechanism, 31- clamping jaw driving mechanism, 311- installation frame, 312- drive cylinder, 32- clamping jaw
Component, 321- first drive piece, the connection of 3211- first sets of vias, 322- second driving piece, the connection of 3221- second sets of vias,
3222- third connects sets of vias, 323- third driving piece, the connection of 3231- the 4th sets of vias, 3232- collet mounting hole, 324- folder
Head.
Specific embodiment
Below in conjunction with attached drawing, by specific embodiment, the invention will be further described.
As shown in Figure 1, Figure 2, a kind of hydraulic pressure lift clamping jaw, comprising:
Support frame 1, support frame 1 include two horizontally arranged and parallel translation support rods 11, are installed under translation support rod 11
The supporting leg 12 of side and the guide rail 13 for being installed on 11 top of translation support rod；
Movable lifting frame 2, movable lifting frame 2 include the horizontal bracket 21 being installed on guide rail 13, are located at 21 lower section of horizontal bracket
Lifting attachment base 22, be vertically arranged on horizontal bracket 21 and tailpiece of the piston rod and mentioning of connecting of lifting 22 center of attachment base
Oil-lifting jar 23, the guide rod 24 for being connected to above lifting 22 surrounding of attachment base vertically and passing through horizontal bracket 21；
Clip claw mechanism 3, clip claw mechanism 3 include being connected to the clamping jaw driving mechanism 31 of 22 lower section of lifting attachment base and being connected to folder
The clip claw assembly 32 of 31 lower section of pawl driving mechanism, clip claw assembly 32 have folding clamping under the action of clamping jaw driving mechanism 31
Movement.
Large-scale workpiece can be clamped by clip claw mechanism 3 as a result, then after workpiece capable of being promoted by movable lifting frame 2
Labour is greatly saved in lateral transfer again.
As shown in Figure 1, Figure 2, guide wheel assembly 26 is installed, guide wheel assembly 26 includes rolling 261 He of guide wheel below horizontal bracket 21
Guide wheel 262 is limited, the translation that support frame 1 is realized in cooperation above guide wheel 261 and guide rail 13, limit guide wheel 262 and guide rail 13 are rolled
The limit of support frame 1 is realized in side cooperation.
Guide wheel assembly 26 can make movable lifting frame by rolling guide wheel 261 and limiting being used cooperatively for guide wheel 262 as a result,
2 more smoothly move on guide rail 13.
As shown in Figure 1, Figure 2,23 piston rod telescopic end of lift cylinder is arranged downward, and cylinder body lower end and horizontal bracket 21 pass through bolt
It is affixed, and horizontal bracket 21, equipped with the flexible through-hole passed through of piston rod is made, 23 piston rod extension end of lift cylinder and lifting connect
It is affixed by bolt between joint chair 22.
The rod chamber oil inlet of lift cylinder 23 just can drive lifting attachment base 22 to move up as a result, to realize to clamping jaw machine
Structure 3 and the promotion for clamping workpiece.
As shown in Figure 1, Figure 2, guide rod 24 is equipped with 4 and is distributed in around lift cylinder 23, and 24 lower end of guide rod and lifting connect
It is affixed by bolt between joint chair 22, matched between shaft and horizontal bracket 21 by the guide sleeve 25 fixed with horizontal bracket 21
It closes；24 upper end of guide rod is affixed with the same fixed block 27 respectively.
Lifting attachment base 22 can be made to keep horizontality in lifting process by installing guide rod 24 as a result, make work
Part is promoted more steady, and can further strengthen stationarity for guide rod 24 is affixed by fixed block 27.
As shown in Figure 1, Figure 2,22 lower section of lifting attachment base is at least equipped with one group of clip claw mechanism 3,3 line array of multiple groups clip claw mechanism
Column arrange and to go up and down 22 center of attachment base symmetric arrays；One group of clamping jaw driving mechanism 31 at least drives one group of clip claw assembly
32。
Clip claw mechanism 3 can install corresponding quantity according to the size and weight selectivities of clamping workpiece as a result, to add
The hoisting power of strong clip claw mechanism 3.
As shown in Figure 1, Figure 2, clip claw assembly 32 is hingedly formed by two groups of driving pieces, including L-shaped first driving piece 321,
With first driving piece 321 cross out end connection and extend downwardly second driving piece 322, with second drive piece 322 connect and
The third driving piece 323 being laterally extended to promptly direction, third driving 323 extension end of piece are connected separately with collet 324；First drives
Movable plate 321 is hinged in corner.
Clip claw assembly 32 drives piece 322, third driving piece 323 and collet 324 to spell by the first driving piece 321, second as a result,
It connects, corresponding driving piece and collet can be replaced according to the size and shape of workpiece.
As shown in Figure 1, Figure 2, clamping jaw driving mechanism 31 includes the installation frame 311 affixed with 22 lower section of lifting attachment base, piston
The lateral symmetry drive cylinder 312 being installed on inside installation frame 311,312 axis direction of drive cylinder and first drive bar inwardly
321 rotary moveable face of movable plate is parallel, and piston rod extension end and the first driving 321 upper end of piece are hinged.
The expanding-contracting action of drive cylinder 312 is able to drive the first driving piece 321 and rotates by axle center of hinged place as a result, from
And the folding of collet 324 is driven to realize the clamping to workpiece.
As shown in Figure 1, Figure 2, the first driving piece 321 crosses out end and first vertical with piece body is distributed with connect sets of vias
3211；Second driving 322 upper end of piece is equipped with vertical with piece body second and connect sets of vias 3221, and the second driving 322 lower end of piece is set
There is the third vertical with piece body to connect sets of vias 3222；Third driving 323 one end of piece, which is equipped with the vertical with piece body the 4th and connect, to be led to
Collet mounting hole 3232 is equipped with after hole group 3231, the other end and the bending of piece body vertical direction；Second connection sets of vias 3221 and the
It is bolted between one connection sets of vias 3211, leads between the 4th connection sets of vias 3231 and third connection sets of vias 3222
It crosses and is bolted, be bolted between collet 324 and collet mounting hole 3232.
The first driving piece 321, second, which drives, as a result, passes through bolt between piece 322, third driving piece 323 and collet 324
Connection, it is convenient for disassembly and assembly.
As shown in Figure 1, Figure 2, the first connection sets of vias 3211 is at least distributed in the half length of 321 lateral part of the first driving piece
And from outer end to hinged directional spreding, it is long that third connection sets of vias 3222 is at least distributed in the vertical half of the second driving piece 322
It spends and is up distributed by lower end.
The opposite first driving piece 321 of the second driving piece 322 is able to carry out lateral adjustments as a result, and third drives piece 323 opposite
Second driving piece 322 is able to carry out vertical adjustment.
Embodiment described above is only that preferred embodiments of the present invention will be described, not to design of the invention
It is defined with range.Without departing from the design concept of the invention, ordinary people in the field is to technical side of the invention
The all variations and modifications that case is made, should all drop into protection scope of the present invention, the claimed technology contents of the present invention,
Through being all described in the claims.
Claims (9)
1. a kind of hydraulic pressure lift clamping jaw characterized by comprising
Support frame (1), support frame as described above (1) include two horizontally arranged and parallel translation support rods (11), be installed on it is described
The guide rail (13) for translating the supporting leg (12) below support rod (11) and being installed on above translation support rod (11)；
Movable lifting frame (2), the movable lifting frame (2) include the horizontal bracket (21) being installed on the guide rail (13), position
Lifting attachment base (22) below the horizontal bracket (21) is vertically arranged on the horizontal bracket (21) and tailpiece of the piston rod
The lift cylinder (23) that connect with described lifting attachment base (22) center, to be connected to the lifting attachment base (22) vertically all
The side of placing and the guide rod (24) for passing through the horizontal bracket (21)；
Clip claw mechanism (3), the clip claw mechanism (3) include the clamping jaw driving mechanism being connected to below lifting attachment base (22)
(31) and the clip claw assembly (32) that is connected to below the clamping jaw driving mechanism (31), the clip claw assembly (32) is in the folder
Has the movement of folding clamping under the action of pawl driving mechanism (31).
2. a kind of hydraulic pressure lift clamping jaw according to claim 1, it is characterised in that: installation below the horizontal bracket (21)
Have guide wheel assembly (26), the guide wheel assembly (26) includes rolling guide wheel (261) and limit guide wheel (262), the rolling guide wheel
(261) translation of support frame as described above (1) is realized with cooperation above the guide rail (13), the limit guide wheel (262) is led with described
The limit of support frame as described above (1) is realized in the cooperation of rail (13) side.
3. a kind of hydraulic pressure lift clamping jaw according to claim 1, it is characterised in that: lift cylinder (23) piston rod is stretched
Contracting end is arranged downward, and cylinder body lower end is affixed by bolt with the horizontal bracket (21), and the horizontal bracket (21) is equipped with
Make the flexible through-hole passed through of piston rod, leads between lift cylinder (23) the piston rod extension end and the lifting attachment base (22)
It is affixed to cross bolt.
4. a kind of hydraulic pressure lift clamping jaw according to claim 2, it is characterised in that: the guide rod (24) be equipped with 4 and
It is distributed in around the lift cylinder (23), passes through bolt between guide rod (24) lower end and the lifting attachment base (22)
It is affixed, by cooperating with the horizontal bracket (21) fixed guide sleeve (25) between shaft and the horizontal bracket (21)；Institute
It is affixed with the same fixed block (27) respectively to state guide rod (24) upper end.
5. a kind of hydraulic pressure lift clamping jaw according to claim 1, it is characterised in that: below the lifting attachment base (22) extremely
Clip claw mechanism described in being equipped with one group less (3), the arrangement of clip claw mechanism (3) linear array described in multiple groups and with the lifting attachment base
(22) center is symmetrically arranged；Clamping jaw driving mechanism (31) described in one group at least drive one group described in clip claw assembly (32).
6. a kind of hydraulic pressure lift clamping jaw according to claim 5, it is characterised in that: the clip claw assembly (32) is by two groups of drives
Movable plate hingedly forms, and crosses out end connection including the first L-shaped driving piece (321), with first driving piece (321)
And extend downwardly the second driving piece (322), with described second drive piece (322) to connect and be laterally extended to promptly direction the
Three drivings piece (323), third driving piece (323) extension end are connected separately with collet (324)；The first driving piece
(321) hinged in corner.
7. a kind of hydraulic pressure lift clamping jaw according to claim 6, it is characterised in that: the clamping jaw driving mechanism (31) includes
With installation frame (311) affixed below lifting attachment base (22), piston rod is lateral symmetry inwardly to be installed on the installation
The internal drive cylinder (312) of frame (311), drive cylinder (312) axis direction and the first driving piece (321) rotation
It is parallel to turn active face, and piston rod extension end and first driving piece (321) upper end are hinged.
8. a kind of hydraulic pressure lift clamping jaw according to claim 6, it is characterised in that: first driving piece (321) is laterally
Extension end is distributed with first vertical with piece body and connect sets of vias (3211)；Second driving piece (322) upper end is equipped with and piece
The second vertical connection sets of vias (3221) of body, second driving piece (322) lower end are equipped with the third vertical with piece body and connect
Sets of vias (3222)；Third driving piece (323) one end is equipped with the vertical with piece body the 4th and connect sets of vias (3231), another
Collet mounting hole (3232) are equipped with after end and the bending of piece body vertical direction；Second connection sets of vias (3221) and described first
It is bolted between connection sets of vias (3211), the 4th connection sets of vias (3231) connect sets of vias with the third
(3222) it is bolted between, is bolted between the collet (324) and the collet mounting hole (3232).
9. a kind of hydraulic pressure lift clamping jaw according to claim 8, it is characterised in that: first connection sets of vias (3211)
At least it is distributed in the half length of first driving piece (321) lateral part and from outer end to hinged directional spreding, described the
Three connections sets of vias (3222) are at least distributed in described second driving piece (322) vertical half length and are up divided by lower end
Cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910441789.7A CN110077966A (en) | 2019-05-24 | 2019-05-24 | A kind of hydraulic pressure lift clamping jaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910441789.7A CN110077966A (en) | 2019-05-24 | 2019-05-24 | A kind of hydraulic pressure lift clamping jaw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110077966A true CN110077966A (en) | 2019-08-02 |
Family
ID=67421875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910441789.7A Pending CN110077966A (en) | 2019-05-24 | 2019-05-24 | A kind of hydraulic pressure lift clamping jaw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110077966A (en) |
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| CN108383005A (en) * | 2018-05-07 | 2018-08-10 | 四川大学 | A kind of new type auto dress brick machine |
| CN210150620U (en) * | 2019-05-24 | 2020-03-17 | 浙江省军工集团有限公司 | Hydraulic lifting clamping jaw |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101633475A (en) * | 2009-07-31 | 2010-01-27 | 奇瑞汽车股份有限公司 | Transportation lifting appliance capable of being adjusted in any direction |
| CN201890706U (en) * | 2011-03-04 | 2011-07-06 | 西安超码科技有限公司 | Lifting device for large-sized carbon fiber fabrics |
| CN204508572U (en) * | 2015-03-04 | 2015-07-29 | 萧超海 | A kind of hoist mechanism |
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| CN205294625U (en) * | 2015-12-01 | 2016-06-08 | 重庆福丹环保建材有限公司 | Prefabricated plate stone tongs |
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