CN104802010A - Four-shaft clamping clamp for machining I steel or channel steel - Google Patents
Four-shaft clamping clamp for machining I steel or channel steel Download PDFInfo
- Publication number
- CN104802010A CN104802010A CN201510211734.9A CN201510211734A CN104802010A CN 104802010 A CN104802010 A CN 104802010A CN 201510211734 A CN201510211734 A CN 201510211734A CN 104802010 A CN104802010 A CN 104802010A
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- oil hydraulic
- turning table
- plate
- work turning
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000003754 machining Methods 0.000 title abstract description 6
- 238000007514 turning Methods 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/064—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding elongated workpieces, e.g. pipes, bars or profiles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
The invention discloses a four-shaft clamping clamp for machining I steel or channel steel. The four-shaft clamping clamp comprises a rotary worktable main base, a rotary worktable tail base, a main connecting plate, a rotary worktable, a positioning device, a thrust oil hydraulic cylinder and a force guiding plate, wherein the rotary worktable is connected with the rotary worktable main base and the rotary worktable tail base by the connecting plate; the positioning device is mounted on the rotary worktable; the rotary worktable is used for placing a work piece; the thrust oil hydraulic cylinder is mounted at the bottom of the rotary worktable and is connected with the force guiding plate; a force applied by the thrust oil hydraulic cylinder is applied to the work piece through the force guiding plate in order to clamp the work piece; an output shaft of the thrust oil hydraulic cylinder and the guiding plate are arranged on the same side. According to the four-shaft clamping clamp disclosed by the invention, the thrust oil hydraulic cylinder and the force guiding plate are used for applying a clamping force to the work piece and form a force arm type thrust structure; the structure is small in installation dimension and compact; space is saved; cost is lowered; the four-shaft clamping clamp is good in clamping effect and capable of improving the machining precision and efficiency.
Description
Technical field
The present invention relates to numerical control machine tool technique field, particularly relate to a kind of four axis clamping fixtures processing I-steel or channel-section steel.
Background technology
Numerical control machining center changes tradition with the artificially main mode of production, by the control of computer program, can complete various different process requirements, as milling, boring, bore hole, tapping etc., significantly shorten processing time-histories, reduce production cost, this is the maximum feature of Digit Control Machine Tool.
In numerical control machining center, the fixture of workpiece is the key factor affecting machining accuracy and working (machining) efficiency, existing fixture has higher precision and efficiency for most work pieces process, and some standard steel of existing clamping as the fixture of channel-section steel, I-steel add all can occur man-hour loosen have impact on processing do not reach higher precision and efficiency; And some enterprise to standard steel as channel-section steel, the processing of I-steel still adopts manual mode to process, and such precision is poorer, and effect is lower, and cost of labor is also higher.
Summary of the invention
The object of the invention is to solve the problems such as the low and efficiency of prior art machining accuracy is low and propose a kind of four axis clamping fixtures processing I-steel or channel-section steel.
For reaching this object, the present invention by the following technical solutions:
Process four axis clamping fixtures of I-steel or channel-section steel, comprise the Work turning table seat of honour, Work turning table tailstock, main connecting plate, Work turning table, for limit workpiece positioner, for clamping work pieces thrust oil hydraulic cylinder and lead power plate;
Described Work turning table is connected with the described Work turning table seat of honour and described Work turning table tailstock by described connecting plate; Described positioner is installed on described Work turning table; Described Work turning table is for placing described workpiece; Described thrust oil hydraulic cylinder is installed on the bottom of described Work turning table; Described thrust oil hydraulic cylinder is connected with the described power of leading plate, the power that described thrust oil hydraulic cylinder applies pass through described in lead power plate and be applied to described workpiece, for clamping described workpiece; The output shaft of described thrust oil hydraulic cylinder and described guide plate are in the same side.
Preferably, it also comprises bracing frame, rebound and connecting axle;
Support frame as described above is installed on the bottom of described Work turning table; Described thrust oil hydraulic cylinder is installed on the bottom of support frame as described above, lead on power plate described in described rebound is mounted on, described connecting axle is through described rebound, and one end is connected with the described power of leading plate, the other end is free end, and the output shaft of described thrust oil hydraulic cylinder is connected with described guide plate.
Preferably, it also comprises linear bearing, and described linear bearing is installed on described rebound, and described connecting axle is successively through linear bearing and rebound.
Preferably, it comprises rotation oil hydraulic cylinder and cantilever, and described rotation oil hydraulic cylinder is installed on described positioner, and described cantilever is installed on the output shaft of described rotation oil hydraulic cylinder; Described cantilever and described absorption surface.
Preferably, it comprises work keel, and described work keel is installed on described Work turning table, between described workpiece and described Work turning table.
Preferably, described in lead power plate be inverted T shape plate, described in lead power plate transverse slat be connected with described connecting axle, its riser is provided with M16 hexagon socket head cap screw, described hex(agonal)screw and described workpiece promote to be connected.
7, four axis clamping fixtures of processing I-steel according to claim 6 or channel-section steel, is characterized in that: described positioner comprises X to positioner and Y-direction positioner, and described X is installed on the two ends of described Work turning table to positioner; Described Y-direction positioner is installed on the side contrary with described oil hydraulic cylinder of described Work turning table.
Preferably, X is that X is to location-plate to positioner; Described Y-direction positioner is Y-direction location-plate; Described rotation oil hydraulic cylinder is installed on described X to location-plate.
Preferably, described connecting axle is the hard axle of chromium plating; Described connecting axle is provided with screw hole, is connected with described guide plate by described screw hole.
Preferably, described cantilever is installed on by screw on the output shaft of described rotation oil hydraulic cylinder; Described cantilever is 7 fonts, and the contact jaw of itself and described workpiece is provided with flexible glue.
The present invention utilizes thrust oil hydraulic cylinder and leads power plate and clamping force is applied to workpiece, and be the thrust structure of a force arm type dual, such structure installment size is little, compact conformation, saves space and reduces costs; And clamping effect is good, improve precision and the efficiency of processing.
Accompanying drawing explanation
Fig. 1 is the decomposed structural representation of the present invention four axle hydraulically operated fixture.
Fig. 2 is another part decomposition texture schematic diagram of the present invention four axle hydraulically operated fixture.
Fig. 3 is the enlarged drawing at the A place of Fig. 2.
Fig. 4 is the structural representation of the present invention's specific embodiment.
Wherein: the Work turning table seat of honour 1, Work turning table tailstock 2, connecting plate 3, Work turning table 4, workpiece 5, positioner 6, thrust oil hydraulic cylinder 7, rotates oil hydraulic cylinder 10, cantilever 11, work keel 12, leads power plate 13, bracing frame 14, rebound 15, connecting axle 17, linear bearing 18, main shaft 23, lathe bed 24, tool magazine 25, column 26, workbench 28, X to positioner, X to location-plate 61, Y-direction positioner, Y-direction positioner 62, hex(agonal)screw 100, installing hole 101.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
As shown in Figure 1, Figure 2 and Figure 3, process four axis clamping fixtures of I-steel or channel-section steel, comprise the Work turning table seat of honour 1, Work turning table tailstock 2, main connecting plate 3, Work turning table 4, for limit workpiece 5 positioner 6, for clamping work pieces 5 thrust oil hydraulic cylinder 7 and lead power plate 13;
Described Work turning table 4 is connected with the described Work turning table seat of honour 1 and described Work turning table tailstock 2 by described connecting plate 3; Described positioner 6 is installed on described Work turning table 4; Described Work turning table 4 is for placing described workpiece 5; Described thrust oil hydraulic cylinder 7 is installed on the bottom of described Work turning table 4; Described thrust oil hydraulic cylinder 7 is connected with the described power of leading plate 13, the power that described thrust oil hydraulic cylinder 7 applies pass through described in lead power plate 13 and be applied to described workpiece 5, for clamping described workpiece 5; The output shaft of described thrust oil hydraulic cylinder 7 and described guide plate 13 are in the same side.
Described workpiece 5 (I-steel or channel-section steel) is placed on described Work turning table 4, then utilizes positioner 6 to carry out X to described workpiece 5 and locate to Y-direction, then clamp described workpiece 5 with described thrust oil hydraulic cylinder 7; Described workpiece 5 is processed after clamping.After described workpiece 5 clamps, under the effect of motor, slide block rail along the line and rack-and-pinion move, and drive described saddle to move, and realize the movement of described saddle in X-direction; Described saddle is equipped with line rail and screw mandrel, under the effect of motor and screw mandrel, is moved by slide block rail along the line, drive described column 26 in the movement of Y direction; Described column 26 is equipped with line rail and screw mandrel, under the effect of described motor and described screw mandrel, is moved along described line rail by slide block, drive described head to move in the direction of Z axis; Main shaft 23 is arranged on head, then has described workpiece 5 to rotate with described Work turning table 4, realizes four-axle linkedly processing workpiece.By leading the power that power plate 13 and described thrust oil hydraulic cylinder 7 apply described workpiece to clamp described in adopting, the installation dimension of this spline structure is little, when can not cause the rotation of a whole set of fixture and the described workbench 28 of Digit Control Machine Tool have interference; And clamping is effective, thus improve efficiency and the precision of processing, and structure is simple, it is convenient to install, and cost is low.At this, thrust oil hydraulic cylinder 7 being described, is determine according to the length of described workpiece 5.
Preferably, it also comprises bracing frame 14, rebound 15 and connecting axle 17;
Support frame as described above 14 is installed on the bottom of described Work turning table 4; Described thrust oil hydraulic cylinder 7 is installed on the bottom of support frame as described above 14, lead described in described rebound 15 is mounted on power plate 13, described connecting axle 17 is through described rebound 15, one end is connected with the described power of leading plate 13, the other end is free end, and the output shaft of described thrust oil hydraulic cylinder 7 is connected with described guide plate 13.
Support frame as described above 14 facilitates the installation of described thrust oil hydraulic cylinder 7, adopting rebound 15 and described connecting axle 17 to make described thrust oil hydraulic cylinder 8 more stable when leading power plate 13 described in promoting, ensure that the stability clamping described workpiece 5.
Preferably, it also comprises linear bearing 18, and described linear bearing is installed on described rebound 15, and described connecting axle 17 is successively through linear bearing 18 and rebound 15.
Described linear bearing 18 makes described connecting axle 17 in moving process, have higher stability.
Preferably, it comprises rotation oil hydraulic cylinder 10 and cantilever 11, and described rotation oil hydraulic cylinder is installed on described positioner 6, and described cantilever 11 is installed on the output shaft of described rotation oil hydraulic cylinder 10; Described cantilever 11 contacts with described workpiece 5.
Described fixture also comprises rotation oil hydraulic cylinder 10 and cantilever 11 makes described workpiece 5 with more stable in described Work turning table 4 rotation process, and clamping effect is better.
Preferably, it comprises work keel 12, and described work keel 12 is installed on described Work turning table 4, between described workpiece 5 and described Work turning table 4.
Described work keel 12 is set and ensures that cutter can not cut described workbench 28 in process, ensure that described workbench 28 can not damage.
Preferably, described in lead power plate 13 for inverted T shape plate, described in lead power plate 13 transverse slat be connected with described connecting axle 17, its riser is provided with M16 hexagon socket head cap screw 100, described hex(agonal)screw 100 promotes to be connected with described workpiece 5.
The described power of leading plate 13 is the connection of inverted T shape plate, convenience and described thrust oil hydraulic cylinder 7, and conveniently applies power to described workpiece 5; Screw is quick and easy for installation, and the contact surface of screw and described workpiece 5 is few, can reduce the wearing and tearing of described workpiece 5.
Preferably, described positioner 6 comprises X to positioner 61 and Y-direction positioner 62, and described X is installed on the two ends of described Work turning table 4 to positioner 61; Described Y-direction positioner 62 is installed on the side contrary with described oil hydraulic cylinder of described Work turning table 4.
Described X to positioner 61 and described Y-direction positioner 62 make described workpiece 5 add ensure that man-hour X to can not the moving of Y-direction, keep stability, and described Y-direction positioner 62 and described thrust oil hydraulic cylinder 7 are installed on the both sides of described Work turning table 4 respectively, described like this thrust oil hydraulic cylinder 7 leans on to described Y-direction positioner 62 at the described workpiece 5 of promotion, so just reaches the object clamping described workpiece 5.
Preferably, X is that X is to location-plate 61 to positioner 61; Described Y-direction positioner 62 is Y-direction location-plate 62; Described rotation oil hydraulic cylinder 10 is installed on described X to location-plate 61.
Employing positioning plate structure is simple, easy for installation, quick, and cost is low; Described rotation oil hydraulic cylinder 10 is installed on described X on location-plate 61, makes the structure when clamping described workpiece and being effective compacter; Structure space.
Preferably, described connecting axle 17 is the hard axle of chromium plating; Described connecting axle 17 is provided with screw hole, is connected with described guide plate 13 by described screw hole.
Chromium plating hard axle tool has good wearability and higher hardness, long service life; Adopt screw to be connected with described guide plate 13 by described connecting axle 17, it is convenient to install, and cost is low.
Preferably, described cantilever 11 is installed on by screw on the output shaft of described rotation oil hydraulic cylinder 10; Described cantilever 11 is 7 fonts, and the contact jaw of itself and described workpiece 5 is provided with flexible glue.
Described cantilever 11 is installed on described rotation oil hydraulic cylinder by screw, quick and easy for installation; Described cantilever 11 is 7 fonts, and the contact jaw of itself and described workpiece 5 is provided with flexible glue and comes workpiece pressing surface, can reduce the wearing and tearing of workpiece; And 7 described cantilevers 11 of font, processing is needed in the porose position of flexible glue compacted position annex, the interference of meeting main shaft and described cantilever 11 can not be caused, if general described cantilever 11 will need the length lengthening cutter, just can avoid adding main shaft and the interference of described cantilever 11 in man-hour, but the power of the longer processing of the length of cutter is less, and precision is poorer, even cutter also has the possibility damaged.
As shown in Figure 4, preferably, the surfaces, four, front and back up and down of described Work turning table 4 are provided with along X to the equidistant installing hole 101 extended.
Described installing hole 101 is convenient installs described X to location-plate 6, Y-direction location-plate 62, workpiece keel 12 and thrust oil hydraulic cylinder 7, makes the position that they can regulate on described Work turning table 4 according to the size of workpiece.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (10)
1. process four axis clamping fixtures of I-steel or channel-section steel, it is characterized in that: comprise the Work turning table seat of honour, Work turning table tailstock, main connecting plate, Work turning table, for limit workpiece positioner, for clamping work pieces thrust oil hydraulic cylinder and lead power plate;
Described Work turning table is connected with the described Work turning table seat of honour and described Work turning table tailstock by described connecting plate; Described positioner is installed on described Work turning table; Described Work turning table is for placing described workpiece; Described thrust oil hydraulic cylinder is installed on the bottom of described Work turning table; Described thrust oil hydraulic cylinder is connected with the described power of leading plate, the power that described thrust oil hydraulic cylinder applies pass through described in lead power plate and be applied to described workpiece, for clamping described workpiece; The output shaft of described thrust oil hydraulic cylinder and described guide plate are in the same side.
2. four axis clamping fixtures of processing I-steel according to claim 1 or channel-section steel, is characterized in that: it also comprises bracing frame, rebound and connecting axle;
Support frame as described above is installed on the bottom of described Work turning table; Described thrust oil hydraulic cylinder is installed on the bottom of support frame as described above, lead on power plate described in described rebound is mounted on, described connecting axle is through described rebound, and one end is connected with the described power of leading plate, the other end is free end, and the output shaft of described thrust oil hydraulic cylinder is connected with described guide plate.
3. four axis clamping fixtures of processing I-steel according to claim 2 or channel-section steel, it is characterized in that: it also comprises linear bearing, described linear bearing is installed on described rebound, and described connecting axle is successively through linear bearing and rebound.
4. four axis clamping fixtures of processing I-steel according to claim 3 or channel-section steel, it is characterized in that: it comprises rotation oil hydraulic cylinder and cantilever, described rotation oil hydraulic cylinder is installed on described positioner, and described cantilever is installed on the output shaft of described rotation oil hydraulic cylinder; Described cantilever and described absorption surface.
5. four axis clamping fixtures of processing I-steel according to claim 4 or channel-section steel, is characterized in that: it comprises work keel, and described work keel is installed on described Work turning table, between described workpiece and described Work turning table.
6. four axis clamping fixtures of processing I-steel according to claim 5 or channel-section steel, it is characterized in that: described in lead power plate be inverted T shape plate, the transverse slat of the described power of leading plate is connected with described connecting axle, its riser is provided with M16 hexagon socket head cap screw, and described hex(agonal)screw and described workpiece promote to be connected.
7. four axis clamping fixtures of processing I-steel according to claim 6 or channel-section steel, is characterized in that: described positioner comprises X to positioner and Y-direction positioner, and described X is installed on the two ends of described Work turning table to positioner; Described Y-direction positioner is installed on the side contrary with described oil hydraulic cylinder of described Work turning table.
8. four axis clamping fixtures of processing I-steel according to claim 7 or channel-section steel, is characterized in that: X is that X is to location-plate to positioner; Described Y-direction positioner is Y-direction location-plate; Described rotation oil hydraulic cylinder is installed on described X to location-plate.
9. four axis clamping fixtures of processing I-steel according to claim 8 or channel-section steel, is characterized in that: described connecting axle is the hard axle of chromium plating; Described connecting axle is provided with screw hole, is connected with described guide plate by described screw hole.
10. four axis clamping fixtures of processing I-steel according to claim 4 or channel-section steel, is characterized in that: described cantilever is installed on the output shaft of described rotation oil hydraulic cylinder by screw; Described cantilever is 7 fonts, and the contact jaw of itself and described workpiece is provided with flexible glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211734.9A CN104802010A (en) | 2015-04-29 | 2015-04-29 | Four-shaft clamping clamp for machining I steel or channel steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211734.9A CN104802010A (en) | 2015-04-29 | 2015-04-29 | Four-shaft clamping clamp for machining I steel or channel steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104802010A true CN104802010A (en) | 2015-07-29 |
Family
ID=53687424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510211734.9A Pending CN104802010A (en) | 2015-04-29 | 2015-04-29 | Four-shaft clamping clamp for machining I steel or channel steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104802010A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750963A (en) * | 2016-04-29 | 2016-07-13 | 于贵彬 | Hydraulic combined clamp for workpiece machining and using method thereof |
| CN106826317A (en) * | 2017-03-15 | 2017-06-13 | 西安超越机电技术有限责任公司 | A kind of multi-section aluminium section bar special hydraulic clamp |
| CN110029805A (en) * | 2019-03-26 | 2019-07-19 | 中国五冶集团有限公司 | A kind of adjustable overhanging I-steel pre-embedded device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750963A (en) * | 2016-04-29 | 2016-07-13 | 于贵彬 | Hydraulic combined clamp for workpiece machining and using method thereof |
| CN106826317A (en) * | 2017-03-15 | 2017-06-13 | 西安超越机电技术有限责任公司 | A kind of multi-section aluminium section bar special hydraulic clamp |
| CN110029805A (en) * | 2019-03-26 | 2019-07-19 | 中国五冶集团有限公司 | A kind of adjustable overhanging I-steel pre-embedded device |
| CN110029805B (en) * | 2019-03-26 | 2023-10-13 | 中国五冶集团有限公司 | Adjustable I-steel pre-buried device of encorbelmenting |
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Application publication date: 20150729 |