CN109353064B - Full-stroke locking mechanism for hydraulic press - Google Patents
Full-stroke locking mechanism for hydraulic press Download PDFInfo
- Publication number
- CN109353064B CN109353064B CN201811567609.1A CN201811567609A CN109353064B CN 109353064 B CN109353064 B CN 109353064B CN 201811567609 A CN201811567609 A CN 201811567609A CN 109353064 B CN109353064 B CN 109353064B
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- cylinder
- telescopic column
- supporting cylinder
- central hole
- movable
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- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 10
- 235000017491 Bambusa tulda Nutrition 0.000 description 10
- 241001330002 Bambuseae Species 0.000 description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 10
- 239000011425 bamboo Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0052—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for fluid driven presses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/08—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The invention relates to a hydraulic machine assembly, in particular to a full-stroke locking mechanism for a hydraulic machine. It is characterized by comprising a rack and a supporting cylinder. An end cover is arranged on the opening of the supporting cylinder. The cylinder bottom of the supporting cylinder is provided with a first central hole, the outer wall of the supporting cylinder corresponding to the first central hole is provided with a driving cylinder, and a piston rod of the driving cylinder penetrates through the first central hole and stretches into the supporting cylinder. The end cover is provided with a second central hole, a telescopic column is arranged in the second central hole, the end face of one end of the telescopic column positioned outside the supporting cylinder is an inclined plane, and one end of the telescopic column positioned inside the supporting cylinder is provided with a connecting rod. The movable cylinder is concentrically arranged in the supporting cylinder, a yielding port is arranged on the end face of the movable cylinder corresponding to the connecting rod, one end of the connecting rod far away from the telescopic column penetrates through the yielding port and stretches out of the movable cylinder, a stop block is fixed at one end of the connecting rod positioned in the movable cylinder, and a compression spring is arranged on the section of connecting rod between the telescopic column and the movable cylinder. The locking mechanism is convenient to replace the die, the working efficiency of the hydraulic machine is high, potential safety hazards are avoided, and the manufacturing cost is low.
Description
Technical Field
The invention relates to a hydraulic machine assembly, in particular to a full-stroke locking mechanism for a hydraulic machine for safety protection, which is particularly suitable for the hydraulic machine of automobile interior trim parts.
Background
It is known in the hydraulic industry that safety protection mechanisms are mounted on hydraulic machines for protecting the life safety of operators.
At present, the safety protection mechanism of the hydraulic machine comprises a safety bolt and a safety supporting rod, and the safety bolt and the safety supporting rod are connected with a driving mechanism. When the hydraulic machine is used, the lifting lug is arranged at the upper end of the movable beam of the hydraulic machine, the safety bolt is arranged at the top of the hydraulic machine, the safety bolt corresponds to the lifting lug in position, the sliding rail is arranged on the workbench of the hydraulic machine, the safety supporting rod is vertically arranged on the sliding rail, and the safety supporting rod can slide to the lower part of the movable beam. The safety bolt has the functions that: when the hydraulic machine needs to replace the die, the movable beam is manually returned to the highest point, and the driving mechanism of the safety bolt drives the safety bolt pin shaft to be inserted into the lifting lug, so that the hydraulic system of the hydraulic machine is prevented from being out of control, and the movable beam falls down to cause personal injury. The safety support rod has the functions that: after the pressing action of the equipment is finished, the movable beam returns to a certain height, the driving mechanism of the safety supporting rod drives the safety supporting rod to move to the lower part of the movable beam, and at the moment, workers can safely feed and discharge materials, so that the hydraulic system of the hydraulic machine is prevented from being out of control, and the movable beam falls to cause personal injury. However, the safety latch needs to be lifted to the top of the hydraulic machine for use, and when the hydraulic machine is high, the die on the lower plane of the movable beam is inconvenient to replace. When the safety support rod works, after the rising height of the movable beam is necessarily larger than the length of the safety support rod, the safety support rod can slide to the lower side of the movable beam to protect the movable beam, and the rising height of the movable beam is higher, so that the working efficiency of the hydraulic machine is lower. Moreover, the safety support rod cannot be protected in the process that the movable beam does not rise above the safety support rod, cannot be protected in the whole process, and has potential safety hazards. In addition, the safety bolt and the safety support rod are both required to be matched with driving mechanisms, the required driving mechanisms are more, the manufacturing cost is higher,
Disclosure of Invention
The invention aims to solve the technical problem of providing a full-stroke locking mechanism for a hydraulic machine, which is convenient for replacing a die, has higher working efficiency, avoids potential safety hazards and has lower manufacturing cost.
In order to solve the problems, the following technical scheme is provided:
The full-stroke locking mechanism for the hydraulic machine is characterized by comprising racks and a supporting cylinder, wherein the racks are vertically arranged, and convex teeth of the racks are 7-shaped. The supporting cylinder is horizontally arranged, the cylinder opening of the supporting cylinder faces the front face of the rack, and the end cover is arranged on the cylinder opening of the supporting cylinder. The cylinder bottom of the supporting cylinder is provided with a first central hole, the outer wall of the supporting cylinder corresponding to the first central hole is concentrically provided with a driving cylinder, a piston rod of the driving cylinder penetrates through the first central hole to extend into the supporting cylinder, and the piston rod of the driving cylinder is in movable fit with the first central hole. There is the second centre bore on the end cover, has the flexible post in the second centre bore, and the one end of flexible post is located the support section of thick bamboo, and the other end is located outside the support section of thick bamboo, and is the slip form cooperation between flexible post and the end cover, and the terminal surface that is located the flexible post one end outside the support section of thick bamboo is the inclined plane, and the distance top-down on this inclined plane to the flexible post other end becomes gradually big, and is the circular arc transition between the bottom of inclined plane and the lower surface of flexible post, has the connecting rod on the flexible post one end that is located the support section of thick bamboo. The movable cylinder is concentrically arranged in the supporting cylinder, one end of the movable cylinder is fixed on a piston rod of the driving cylinder, a yielding port is formed in the end face of the movable cylinder corresponding to the connecting rod, one end of the connecting rod far away from the telescopic column penetrates through the yielding port and stretches out of the movable cylinder, the outer wall of the connecting rod is matched with the yielding port of the movable cylinder in a sliding mode, a stop block is fixed at one end of the connecting rod in the movable cylinder, the width of the stop block is larger than the caliber of the yielding port, and a compression spring is arranged on the section of connecting rod between the telescopic column and the movable cylinder. When the piston rod of the driving cylinder is in an extending state and the compression spring is in an uncompressed state, the inclined surface end of the telescopic column is positioned on the rack.
The top of the movable barrel is fixedly provided with a signal rod which is vertically and upwards arranged, the side wall of the supporting barrel corresponding to the upper end of the signal rod is provided with a yielding through groove, and the upper end of the signal rod penetrates through the yielding through groove and extends out of the supporting barrel. And an in-situ proximity switch is arranged at the top of the side wall of the supporting cylinder corresponding to one end of the yielding through groove.
The side wall bottom of flexible post has axial groove, has the bolt of arranging along flexible post radial on the second centre bore inner wall that axial groove corresponds, and the one end of bolt is fixed on the inner wall of second centre bore, and the other end of bolt is located axial groove, and the flexible post is the sliding fit between axial groove and bolt.
The second center hole is internally provided with a sheath, the outer wall of the sheath is connected with the inner wall of the second center hole, the telescopic column is positioned in the sheath, and the side wall of the sheath corresponding to the bolt is provided with a yielding port.
And the inclined plane of the telescopic column is provided with a roller.
The rack back is fixed with vertical first mounting panel, be fixed with vertical second mounting panel on the lateral wall of support section of thick bamboo.
By adopting the scheme, the method has the following advantages:
the full-stroke locking mechanism for the hydraulic machine comprises a rack and a supporting cylinder, wherein the rack is vertically arranged, the convex teeth of the rack are in a 7 shape, an end cover is arranged on the cylinder mouth of the supporting cylinder, a first central hole is arranged on the cylinder bottom of the supporting cylinder, a driving cylinder is arranged on the outer wall of the supporting cylinder, a piston rod of the driving cylinder penetrates through the first central hole and stretches into the supporting cylinder, a second central hole is arranged on the end cover, a telescopic column is arranged in the second central hole, one end of the telescopic column is positioned in the supporting cylinder, the other end of the telescopic column is positioned outside the supporting cylinder, the telescopic column is in sliding fit with the end cover, a connecting rod is arranged at one end of the telescopic column positioned in the supporting cylinder, a movable cylinder is arranged in the supporting cylinder, one end of the movable cylinder is fixed on a piston rod of the driving cylinder, a yielding port is arranged on the end face of the movable cylinder corresponding to the connecting rod, one end of the connecting rod far from the telescopic column penetrates through the yielding port and stretches into the movable cylinder, a stop block is fixed at one end of the connecting rod positioned in the movable cylinder, the width of the stop block is larger than the caliber of the yielding port, and a compression spring is arranged on the connecting rod between the telescopic column and the movable cylinder. When the hydraulic machine is used, the rack is mounted on the upright post of the hydraulic machine, and the supporting cylinder is mounted on the side wall of the movable beam of the hydraulic machine. When the movable beam works, the piston rod of the driving cylinder contracts when the movable beam normally descends, so that the inclined plane of the telescopic column leaves the rack, and the movable beam can conveniently normally descend. When the movable beam rises, the piston rod of the driving cylinder stretches out, the inclined plane of the telescopic column is propped against the surface of the protruding tooth of the rack, the protruding tooth side surface corresponding to the 7-shaped inclined edge and the compression spring are matched to drive the movable beam to stretch back and forth on the movable cylinder in the rising process of the movable beam, so that the movable beam rises layer by layer on the protruding tooth of the rack, when a hydraulic system of the hydraulic machine breaks down, the movable beam falls down due to the action of gravity, and when the telescopic column falls onto the protruding tooth step corresponding to the 7-shaped transverse edge, the movable beam is limited by the protruding tooth step, and the movable beam is prevented from falling. The full-stroke locking mechanism can provide full-stroke protection when the movable beam rises by utilizing the matching of the racks and the telescopic columns, so that the movable beam can be replaced at a lower height, and the die is convenient to replace. In addition, the piston beam can safely feed and discharge materials at any height, so that the working efficiency is improved. Moreover, the protection can be provided in the whole process, and the potential safety hazard is avoided. In addition, the telescopic column is driven to move by one driving cylinder, so that the whole-process protection can be provided, fewer driving mechanisms are needed, and the manufacturing cost is greatly reduced.
Drawings
FIG. 1 is a schematic view of the full travel lock mechanism for a hydraulic machine of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic perspective view of a full travel lock mechanism for a hydraulic machine according to the present invention;
FIG. 4 is a schematic view of the hydraulic machine of the present invention mounted to the hydraulic machine with the full travel lock mechanism.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-3, the full-stroke locking mechanism for the hydraulic machine comprises a rack 1 and a supporting cylinder 3, wherein the rack 1 is vertically arranged, and convex teeth of the rack 1 are 7-shaped. The supporting cylinder 3 is horizontally arranged, the cylinder mouth of the supporting cylinder 3 faces the front face of the rack 1, and the end cover 14 is arranged on the cylinder mouth of the supporting cylinder 3. The bottom of the supporting cylinder 3 is provided with a first central hole, the outer wall of the supporting cylinder 3 corresponding to the first central hole is concentrically provided with a driving cylinder 5, a piston rod of the driving cylinder 5 penetrates through the first central hole and stretches into the supporting cylinder 3, and the piston rod of the driving cylinder 5 is in movable fit with the first central hole. There is the second centre bore on the end cover 14, there is flexible post 15 in the second centre bore, the one end of flexible post 15 is located support section of thick bamboo 3, the other end is located outside the support section of thick bamboo 3, and be sliding fit between flexible post 15 and the end cover 14, the terminal surface that is located the flexible post 15 one end outside the support section of thick bamboo 3 is the inclined plane, the distance top-down on this inclined plane to the flexible post 15 other end becomes progressively greater, and be the circular arc transition between the bottom on inclined plane and the lower surface of flexible post 15, there is connecting rod 10 on the flexible post 15 one end that is located support section of thick bamboo 3. The inner concentric movable cylinder 8 that is provided with of support section of thick bamboo 3, the one end of movable cylinder 8 is fixed on the piston rod of actuating cylinder 5, there is the mouth of stepping down on the movable cylinder 8 terminal surface that the connecting rod 10 corresponds, and the connecting rod 10 one end of keeping away from telescopic column 15 is passed this mouth of stepping down and is stretched out in the movable cylinder 8, is the sliding fit between the outer wall of connecting rod 10 and the mouth of stepping down of movable cylinder 8, and connecting rod 10 one end that is located movable cylinder 8 is fixed with dog 9, and the width of dog 9 is greater than the bore of stepping down the mouth, has compression spring 11 on the section of connecting rod 10 between telescopic column 15 and the movable cylinder 8. When the piston rod of the drive cylinder 5 is in an extended state and the compression spring 11 is in an uncompressed state, the beveled end of the telescopic column 15 is located on the rack 1.
In order to facilitate signal transmission, a signal rod 6 vertically arranged upwards is fixed at the top of the movable barrel 8, a yielding through groove 12 is formed in the side wall of the supporting barrel 3 corresponding to the upper end of the signal rod 6, and the upper end of the signal rod 6 extends to the upper side of the supporting barrel 3 through the yielding through groove 12. An in-situ proximity switch 2 is arranged at the top of the side wall of the supporting cylinder 3 corresponding to one end of the yielding through groove 12.
The bottom of the side wall of the telescopic column 15 is provided with an axial groove 17, the inner wall of a second central hole corresponding to the axial groove 17 is provided with a bolt 18 which is radially arranged along the telescopic column 15, one end of the bolt 18 is fixed on the inner wall of the second central hole, the other end of the bolt 18 is positioned in the axial groove 17, and the telescopic column 15 is in sliding fit with the bolt 18 through the axial groove 17.
The second center hole is internally provided with a sheath 13, the outer wall of the sheath 13 is connected with the inner wall of the second center hole, the telescopic column 15 is positioned in the sheath 13, and the side wall of the sheath 13 corresponding to the bolt 18 is provided with a yielding port.
In order to reduce friction, a roller 16 is provided on the inclined surface of the telescopic column 15.
For the convenience of installation, the back of the rack 1 is fixed with a first mounting plate 7 which is vertically arranged, and the side wall of the supporting cylinder 3 is fixed with a second mounting plate 4 which is vertically arranged.
To facilitate sliding, the sheath 13 in this embodiment is a graphite copper sheath.
In use, the rack 1 is mounted to the upright post of the hydraulic machine 19 and the support cylinder 3 is mounted to the side wall of the travelling beam of the hydraulic machine 19, as shown in figure 4. When the movable beam works normally, the piston rod of the driving cylinder 5 contracts, so that the inclined plane of the telescopic column 15 leaves the rack 1, and the movable beam can conveniently normally descend. When the movable beam rises, the piston rod of the driving cylinder 5 extends out, the inclined plane of the telescopic column 15 is propped against the surface of the protruding teeth of the rack 1, the roller 16 of the inclined plane is matched with the surface of the protruding teeth in a rolling mode, in the rising process of the movable beam, the section of protruding tooth side corresponding to the 7-shaped inclined edge and the compression spring 11 are matched to drive the movable beam to stretch back and forth on the movable cylinder 8, so that the movable beam rises layer by layer on the protruding teeth of the rack 1, when a hydraulic system of the hydraulic machine 19 fails, the movable beam falls down due to the action of gravity, and after the telescopic column 15 falls onto the protruding tooth step corresponding to the 7-shaped transverse edge, the movable beam is limited by the protruding tooth step, so that the movable beam is prevented from falling down, and the emergency protection effect is achieved.
Claims (6)
1. The full-stroke locking mechanism for the hydraulic press is characterized by comprising racks (1) and a supporting cylinder (3), wherein the racks (1) are vertically arranged, and convex teeth of the racks (1) are 7-shaped; the supporting cylinder (3) is horizontally arranged, a cylinder opening of the supporting cylinder (3) faces the front surface of the rack (1), and an end cover (14) is arranged on the cylinder opening of the supporting cylinder (3); the cylinder bottom of the supporting cylinder (3) is provided with a first central hole, the outer wall of the supporting cylinder (3) corresponding to the first central hole is concentrically provided with a driving cylinder (5), a piston rod of the driving cylinder (5) penetrates through the first central hole and stretches into the supporting cylinder (3), and the piston rod of the driving cylinder (5) is in movable fit with the first central hole; the end cover (14) is provided with a second central hole, a telescopic column (15) is arranged in the second central hole, one end of the telescopic column (15) is positioned in the supporting cylinder (3), the other end of the telescopic column is positioned outside the supporting cylinder (3), the telescopic column (15) is in sliding fit with the end cover (14), the end face of one end of the telescopic column (15) positioned outside the supporting cylinder (3) is an inclined plane, the distance from the inclined plane to the other end of the telescopic column (15) is gradually increased from top to bottom, the bottom of the inclined plane and the lower surface of the telescopic column (15) form circular arc transition, and a connecting rod (10) is arranged at one end of the telescopic column (15) positioned in the supporting cylinder (3); the movable cylinder (8) is concentrically arranged in the supporting cylinder (3), one end of the movable cylinder (8) is fixed on a piston rod of the driving cylinder (5), a yielding port is formed in the end face of the movable cylinder (8) corresponding to the connecting rod (10), one end of the connecting rod (10) far away from the telescopic column (15) penetrates through the yielding port and stretches out of the movable cylinder (8), the outer wall of the connecting rod (10) is in sliding fit with the yielding port of the movable cylinder (8), a stop block (9) is fixed at one end of the connecting rod (10) in the movable cylinder (8), the width of the stop block (9) is larger than the caliber of the yielding port, and a compression spring (11) is arranged on the section of the connecting rod (10) between the telescopic column (15) and the movable cylinder (8); when the piston rod of the driving cylinder (5) is in an extending state and the compression spring (11) is in an uncompressed state, the inclined surface end of the telescopic column (15) is positioned on the rack (1).
2. The full-stroke locking mechanism for the hydraulic press according to claim 1, wherein a signal rod (6) which is vertically and upwards arranged is fixed at the top of the movable cylinder (8), a yielding through groove (12) is formed on the side wall of the supporting cylinder (3) corresponding to the upper end of the signal rod (6), and the upper end of the signal rod (6) passes through the yielding through groove (12) and extends to the upper part of the supporting cylinder (3); an in-situ proximity switch (2) is arranged at the top of the side wall of the supporting cylinder (3) corresponding to one end of the yielding through groove (12).
3. The full stroke locking mechanism for hydraulic press as claimed in claim 1, wherein the bottom of the side wall of the telescopic column (15) is provided with an axial groove (17), the inner wall of the second central hole corresponding to the axial groove (17) is provided with a bolt (18) radially arranged along the telescopic column (15), one end of the bolt (18) is fixed on the inner wall of the second central hole, the other end of the bolt (18) is positioned in the axial groove (17), and the telescopic column (15) is in sliding fit with the bolt (18) through the axial groove (17).
4. A full stroke locking mechanism for a hydraulic machine according to claim 3, wherein the second central hole is internally provided with a sheath (13), the outer wall of the sheath (13) is connected with the inner wall of the second central hole, the telescopic column (15) is positioned in the sheath (13), and the side wall of the sheath (13) corresponding to the bolt (18) is provided with a yielding port.
5. A full stroke locking mechanism for a hydraulic machine as claimed in claim 1 wherein said telescoping post (15) is provided with rollers (16) on its incline.
6. The full-stroke locking mechanism for a hydraulic machine according to any one of claims 1 to 5, wherein a first mounting plate (7) arranged vertically is fixed on the back of the rack (1), and a second mounting plate (4) arranged vertically is fixed on the side wall of the supporting cylinder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811567609.1A CN109353064B (en) | 2018-12-24 | 2018-12-24 | Full-stroke locking mechanism for hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811567609.1A CN109353064B (en) | 2018-12-24 | 2018-12-24 | Full-stroke locking mechanism for hydraulic press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109353064A CN109353064A (en) | 2019-02-19 |
| CN109353064B true CN109353064B (en) | 2024-06-28 |
Family
ID=65329999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811567609.1A Active CN109353064B (en) | 2018-12-24 | 2018-12-24 | Full-stroke locking mechanism for hydraulic press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109353064B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209479051U (en) * | 2018-12-24 | 2019-10-11 | 无锡蓝力智能装备有限公司 | Hydraulic press total travel locking mechanism |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08238600A (en) * | 1995-03-03 | 1996-09-17 | Ishikawajima Harima Heavy Ind Co Ltd | Drop preventing device of slide |
| CN203031989U (en) * | 2013-01-16 | 2013-07-03 | 合肥合锻机床股份有限公司 | Hydraulic machine safe locking device and hydraulic machine |
| CN103407195A (en) * | 2013-06-28 | 2013-11-27 | 雄华机械(苏州)有限公司 | Stamping machine movable plate self-locking mechanism |
| CN108999832B (en) * | 2018-08-02 | 2020-05-12 | 重庆维庆液压机械有限公司 | Self-locking hydraulic cylinder |
-
2018
- 2018-12-24 CN CN201811567609.1A patent/CN109353064B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209479051U (en) * | 2018-12-24 | 2019-10-11 | 无锡蓝力智能装备有限公司 | Hydraulic press total travel locking mechanism |
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| Publication number | Publication date |
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| CN109353064A (en) | 2019-02-19 |
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