CN213171275U - Elevator machine oil cylinder with built-in rapid pressurization function - Google Patents
Elevator machine oil cylinder with built-in rapid pressurization function Download PDFInfo
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- CN213171275U CN213171275U CN202021589473.7U CN202021589473U CN213171275U CN 213171275 U CN213171275 U CN 213171275U CN 202021589473 U CN202021589473 U CN 202021589473U CN 213171275 U CN213171275 U CN 213171275U
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- annular
- seat
- piston rod
- fixedly connected
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- 239000010721 machine oil Substances 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 13
- 239000004744 fabric Substances 0.000 claims description 8
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 18
- 231100000719 pollutant Toxicity 0.000 abstract description 18
- 239000004570 mortar (masonry) Substances 0.000 abstract description 13
- 239000003921 oil Substances 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 239000003973 paint Substances 0.000 abstract description 9
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 208000028804 PERCHING syndrome Diseases 0.000 abstract 3
- 238000009434 installation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010422 painting Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an elevator oil cylinder with a built-in rapid pressurization function, which belongs to the technical field of hydraulic oil cylinders, and comprises a cylinder body, the upper end of the cylinder body is connected with a piston rod, the upper end of the cylinder body is fixedly connected with a sleeve seat sleeved outside the piston rod, the inner wall of the sleeve seat is fixedly connected with an annular perching knife sleeved outside the piston rod, the upper end of the annular perching knife extends to the upper side of the sleeve seat, the inner wall of the sleeve seat is provided with an annular groove, the annular groove is positioned at the lower side of the annular perching knife, three annular seats matched with the annular groove are arranged in the annular groove, the annular seat is sleeved outside the piston rod, the inner wall of the middle annular seat is fixedly connected with a brush hair layer, the cleaning of pollutants such as mortar and paint adhered on the piston rod can be realized in the retraction process of the piston rod, the pollutants such as the mortar and, thereby effectively guaranteeing the life of cylinder body.
Description
Technical Field
The utility model relates to a hydraulic cylinder technical field, more specifically say, relate to a lift hydro-cylinder of built-in quick pressure boost function.
Background
In the process of room decoration by constructors, a movable elevator is often needed to be used for performing mortar painting, paint spraying and other works on the wall surface and the top surface of a room. At present, most of mobile elevators are lifted through hydraulic oil cylinders, and along with the continuous development of the hydraulic oil cylinder technology, an elevator oil cylinder with a quick pressurization function appears in the market, the oil cylinder is combined with a supercharger, the supercharging speed of the oil cylinder is increased by the supercharger, and therefore the quick lifting function of the elevator is achieved.
In the practical use process of the elevator oil cylinder, some pollutants such as mortar and paint often fall off in the painting and spraying processes of a constructor, and a piston rod of the elevator oil cylinder is generally directly exposed outside, so the pollutants such as the mortar and the paint are easy to fall off and adhere to the piston rod, when the piston rod retracts, the pollutants such as the mortar and the paint adhered to the piston rod easily pollute and damage a sealing structure (such as a rubber sealing ring) between the oil cylinder body and the piston rod, particularly, the hardened mortar and paint cause more serious damage to a sealing structure, and the service life of the elevator oil cylinder is influenced.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
Problem to existence among the prior art, the utility model aims to provide a lift hydro-cylinder of built-in quick pressure boost function, it can realize retracting the in-process at the piston rod, clears up the pollutants such as the mortar of adhesion on the piston rod, coating, effectively avoids these pollutants to cause serious pollution and damage to seal structure between cylinder body and the piston rod to effectively ensure the life of cylinder body.
2. Technical scheme
In order to solve the above problems, the utility model adopts the following technical proposal.
A lift cylinder with a built-in rapid pressurization function comprises a cylinder body, wherein a piston rod is connected to the upper end of the cylinder body, a sleeve seat sleeved outside the piston rod is fixedly connected to the upper end of the cylinder body, an annular scraper knife sleeved outside the piston rod is fixedly connected to the inner wall of the sleeve seat, the upper end of the annular scraper knife extends to the upper side of the sleeve seat, an annular groove is formed in the inner wall of the sleeve seat and is located on the lower side of the annular scraper knife, three annular seats matched with the annular seat are arranged in the annular groove, the annular seat is sleeved outside the piston rod, a bristle layer is fixedly connected to the inner wall of the intermediate annular seat and is in close contact with the outer surface of the piston rod, the upper end and the lower end of the annular seat are fixedly connected with a flexible wiper which is in close contact with the outer surface of the piston rod, a plurality of, and the liquid feeding hole is located directly over the flexible wiper, sleeve seat upside is equipped with a plurality of sealing plugs with liquid feeding hole threaded connection, the sleeve seat outer end is opened and is dug the ann that is linked together with the ring channel and tear open the mouth, be equipped with rather than assorted lid in the ann tears open the mouth, and the lid is connected with the sleeve seat through the buckle, can realize at the piston rod in-process that contracts, clears up pollutants such as mortar, coating of adhesion on the piston rod, effectively avoids these pollutants to cause serious pollution and damage to the seal structure between cylinder body and the piston rod to effectively ensure the life of cylinder body.
Furthermore, the annular seat comprises a main seat body and an auxiliary seat body, two end parts of the main seat body are respectively clamped with two end parts of the auxiliary seat body, when the main seat body and the auxiliary seat body are clamped together, a finished annular seat is formed, and when workers need to disassemble the annular seat, the main seat body and the auxiliary seat body can be disassembled.
Further, the flexible wiper comprises a sponge layer, the sponge layer is fixedly connected to the inner wall of the annular seat, the outer end of the sponge layer is fixedly connected with an outer cover cloth matched with the outer end of the sponge layer, the sponge layer has good elasticity, the flexible wiper can be tightly released from the outer surface of the piston rod, the sponge layer also has good water absorption and storage capacity, and certain cleaning liquid can be stored in the flexible wiper.
Further, the piston rod outside cover is equipped with a pair of backing ring, and the backing ring is located between two adjacent annular seats, the socket has been dug to the backing ring outer end, and the staff can block the backing ring between two adjacent annular seats, effectively avoids the annular seat disturbance to appear.
Further, the backing ring outer end is dug and is had a pair of atress groove, and two atress grooves are bilateral symmetry and distribute, when the staff need take off the backing ring from the piston rod, can put into the atress groove with the finger and carry out the pull-up to the backing ring to make things convenient for the staff to take off the backing ring from the piston rod.
Furthermore, the annular scraper knife is preferably made of stainless steel materials, and the thickness of the annular scraper knife is preferably 2-3mm, so that the annular scraper knife has high strength, is not easy to deform or damage, and has good antirust capacity.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
(1) this scheme can realize retracting the in-process at the piston rod, clears up pollutants such as mortar, coating of adhesion on the piston rod, effectively avoids these pollutants to cause serious pollution and damage to the seal structure between cylinder body and the piston rod to the life of effective guarantee cylinder body.
(2) The annular seat comprises a main seat body and an auxiliary seat body, the two end parts of the main seat body are respectively clamped with the two end parts of the auxiliary seat body, when the main seat body and the auxiliary seat body are clamped together, a finished annular seat is formed, and when workers need to disassemble the annular seat, the main seat body and the auxiliary seat body can be disassembled.
(3) The flexible wiper comprises a sponge layer, the sponge layer is fixedly connected to the inner wall of the annular seat, the outer end of the sponge layer is fixedly connected with an outer covering cloth matched with the sponge layer, the sponge layer has good elasticity, the flexible wiper can be tightly released from the outer surface of the piston rod, the sponge layer also has good water absorption and storage capacity, and certain cleaning liquid can be stored in the flexible wiper.
(4) The piston rod outside cover is equipped with a pair of backing ring, and the backing ring is located between two adjacent annular seats, and the jack has been dug to the backing ring outer end, and the staff can block the backing ring between two adjacent annular seats, effectively avoids annular seat disturbance to appear.
(5) The backing ring outer end is dug and is had a pair of atress groove, and two atress grooves are bilateral symmetry and distribute, when the staff need take off the backing ring from the piston rod, can put into the atress groove with the finger and carry out the pull-up to the backing ring to make things convenient for the staff to take off the backing ring from the piston rod.
(6) The annular scraper knife is preferably made of stainless steel materials, and the thickness of the annular scraper knife is preferably 2-3mm, so that the annular scraper knife has high strength, is not easy to deform or damage, and has good antirust capacity.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure at A in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken at B-B of FIG. 2;
FIG. 4 is a schematic cross-sectional view taken at C-C of FIG. 2;
fig. 5 is a schematic structural view of the annular seat according to the present invention when it is detached or installed.
The reference numbers in the figures illustrate:
the device comprises a cylinder body 1, a piston rod 2, a sleeve seat 3, an annular scraper knife 4, an annular groove 5, an annular seat 6, a main seat body 601, an auxiliary seat body 602, a brushing layer 7, a flexible wiper 8, a sponge layer 801, an outer covering cloth 802, a liquid adding hole 9, a sealing plug 10, a mounting and dismounting opening 11, a cover body 12, a buckle 13, a backing ring 14, a socket 15 and a stress groove 16.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, an elevator oil cylinder with a built-in rapid pressurization function comprises a cylinder body 1, a piston rod 2 is connected to the upper end of the cylinder body 1, the cylinder body 1 and the piston rod 2 are prior art, the cylinder body 1 is further provided with a supercharger, an oil guide pipeline and other structures, which are not described herein, referring to fig. 2, the upper end of the cylinder body 1 is fixedly connected with a sleeve seat 3 sleeved outside the piston rod 2, the inner wall of the sleeve seat 3 is fixedly connected with an annular scraper knife 4 sleeved outside the piston rod 2, the upper end of the annular scraper knife 4 extends to the upper side of the sleeve seat 3, the edge of the annular scraper knife 4 faces upwards, the inner wall of the annular scraper knife 4 contacts with the outer surface of the piston rod 2, the inner wall of the sleeve seat 3 is provided with an annular groove 5, the annular groove 5 is located at the lower side of the annular scraper knife 4, three annular seats 6 matched with the annular groove 5 are arranged in the annular groove 5, the, and the brush hair layer 7 is closely contacted with the outer surface of the piston rod 2, the brush hair layer 7 is composed of a plurality of plastic brush hair which is uniformly distributed, the inner walls of the upper annular seat and the lower annular seat 6 are fixedly connected with a flexible wiper 8, and the flexible wiper 8 is closely contacted with the outer surface of the piston rod 2.
Referring to fig. 2, the upper end of the sleeve base 3 is drilled with a plurality of liquid feeding holes 9 communicated with the annular groove 5, the liquid feeding holes 9 are located right above the flexible eraser 8, the upper side of the sleeve base 3 is provided with a plurality of sealing plugs 10 in threaded connection with the liquid feeding holes 9, the sealing plugs 10 can seal the liquid feeding holes 9, referring to fig. 3 and 5, the outer end of the sleeve base 3 is drilled with an installation and disassembly opening 11 communicated with the annular groove 5, a cover body 12 matched with the installation and disassembly opening 11 is arranged in the installation and disassembly opening 11, the cover body 12 is connected with the sleeve base 3 through a buckle 13, the buckle 13 is the prior art, which is not described herein again, the cover body 12 can play a role of sealing the installation and disassembly opening 11, can clean up pollutants such as mortar and paint adhered on the piston rod 2 in the retraction process of the piston rod 2, and effectively avoid the pollutants from causing serious pollution and damage to the sealing structure between the cylinder body, thereby effectively guaranteeing the service life of the cylinder body 1.
Referring to fig. 3 and 5, the annular seat 6 includes a main seat 601 and an auxiliary seat 602, two ends of the main seat 601 are respectively connected with two ends of the auxiliary seat 602 in a snap-fit manner, the main seat 601 and the auxiliary seat 602 are made of plastic and have a certain elastic deformation capability, the main seat 601 and the auxiliary seat 602 are shaped as shown in fig. 3, when the main seat 601 and the auxiliary seat 602 are connected in a snap-fit manner, a completed annular seat 6 is formed, when a worker needs to detach the annular seat 6, the main seat 601 and the auxiliary seat 602 are detached, please refer to fig. 2, the flexible eraser 8 includes a sponge layer 801, the sponge layer 801 is fixedly connected to an inner wall of the annular seat 6, an outer covering cloth 802 matched with the sponge layer is fixedly connected to an outer end of the sponge layer 801, the outer covering cloth 802 completely covers the sponge layer 801, and the outer covering cloth 802 is preferably ultra-fine fiber cloth, which is not easy to scratch the piston rod 2, and has good elasticity, the flexible eraser 8 and the outer surface of the piston rod 2 can be released tightly, and the sponge layer 801 has better water absorption and storage capacity, so that certain cleaning liquid can be stored in the flexible eraser 8.
Referring to fig. 2, a pair of backing rings 14 are sleeved outside the piston rod 2, and the backing rings 14 are located between two adjacent annular seats 6, referring to fig. 4, sockets 15 are drilled at the outer ends of the backing rings 14, the sockets 15 can facilitate a worker to take the backing rings 14 off the piston rod 2, referring to fig. 2 and fig. 4, when the worker installs the three annular seats 6 on the piston rod 2, a certain gap is formed between the three annular seats 6, so that the worker can adjust and operate the three annular seats 6 conveniently, after the three annular seats 6 are installed, the worker can clamp the backing rings 14 between the two adjacent annular seats 6, so as to effectively avoid disturbance of the annular seats 6, a pair of force-bearing grooves 16 are drilled at the outer ends of the backing rings 14, and the two force-bearing grooves 16 are distributed in bilateral symmetry, when the worker needs to take the backing rings 14 off the piston rod 2, the fingers can be put into the force-bearing grooves 16 to pull the backing rings 14 upwards, therefore, the backing ring 14 can be conveniently taken down from the piston rod 2 by a worker, referring to fig. 2, the annular blade 4 is preferably made of stainless steel, and the thickness of the annular blade 4 is preferably 2mm, so that the annular blade 4 has high strength, is not easy to deform or damage, and has good antirust capacity.
Referring to fig. 1-2, before the elevator is used, a worker may detach the sealing plug 10 at the mouth of the liquid feeding hole 9, and then inject a corresponding cleaning liquid (i.e. a mixture of a cleaning agent and water, and the worker may select a proper type of cleaning liquid according to actual requirements) into the liquid feeding hole 9, the cleaning liquid may flow through the liquid feeding hole 9 onto the upper flexible wiper 8 and be sucked into and stored in the upper flexible wiper 8, and then, the worker may seal the liquid feeding hole 9 using the sealing plug 10 and put the elevator into use, during the use of the elevator, when the piston rod 2 on the cylinder body 1 retracts, the annular scraper knife 4 may firstly scrape off a large amount of contaminants (e.g. hardened mortar, paint, etc.) on the piston rod 2, then, the upper flexible wiper 8 may wipe the surface of the piston rod 2, and the cleaning liquid stored in the upper flexible wiper 8 may wet the surface of the piston rod 2, afterwards, the brush layer 7 can wash the wetted surface of the piston rod 2, so as to effectively wash away the firmly adhered fine pollutants on the surface of the piston rod 2, finally, the flexible wiper 8 on the lower side can finally wipe the surface of the piston rod 2, and since the flexible wiper 8 on the lower side is in a dry state, the flexible wiper can not only wipe off the pollutants, but also wipe off the cleaning liquid on the surface of the piston rod 2, so that the cleanness of the surface of the piston rod 2 is effectively guaranteed.
Referring to fig. 1 to 5, with the long-term use of the bristle layer 7 and the flexible eraser 8, a large amount of pollutants are easily attached to the bristle layer 7 and the flexible eraser 8, and a worker needs to clean the bristle layer 7 and the flexible eraser 8 in the following manner: firstly, the worker can detach the cover 12 from the sleeve seat 3, then the worker can detach the auxiliary seat 602 from the main seat 601, then detach the main seat 601 from the piston rod 2, then the worker can clean the brush layer 7 and the flexible eraser 8 on each main seat 601 and auxiliary seat 602, after the brush layer 7 and the flexible eraser 8 are cleaned, the worker can firstly clamp the main seat 601 on the piston rod 2, then clamp the auxiliary seat 602 with the main seat 601 at the corresponding position, finally connect the cover 12 with the sleeve seat 3 through the buckle 13 and seal the mounting and dismounting opening 11, to sum up, the scheme can clean the pollutants such as mortar and paint adhered on the piston rod 2 in the retraction process of the piston rod 2, and effectively avoid the pollutants from causing serious pollution and damage to the sealing structure between the cylinder 1 and the piston rod 2, thereby effectively guaranteeing the service life of the cylinder body 1.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.
Claims (6)
1. The utility model provides a built-in quick pressure boost function's lift hydro-cylinder, includes cylinder body (1), cylinder body (1) upper end is connected with piston rod (2), its characterized in that: the sleeve seat (3) outside the piston rod (2) is sleeved with the fixedly connected upper end of the cylinder body (1), the annular scraper knife (4) outside the piston rod (2) is sleeved with the fixedly connected inner wall of the sleeve seat (3), the upper end of the annular scraper knife (4) extends to the upper side of the sleeve seat (3), an annular groove (5) is cut on the inner wall of the sleeve seat (3), the annular groove (5) is positioned at the lower side of the annular scraper knife (4), three annular seats (6) matched with the annular groove (5) are arranged in the annular groove (5), the annular seat (6) is sleeved outside the piston rod (2), the inner wall of the annular seat (6) in the middle is fixedly connected with a brushing layer (7), the brushing layer (7) is in tight contact with the outer surface of the piston rod (2), the upper portion and the lower portion of the annular seat (6) are fixedly connected with a flexible wiper (8), and the flexible wiper (8) is in tight contact, sleeve seat (3) upper end is opened and is chiseled a plurality of liquid feeding hole (9) that are linked together with ring channel (5), and liquid feeding hole (9) are located the flexibility and wipe (8) directly over, sleeve seat (3) upside is equipped with a plurality of sealing plug (10) with liquid feeding hole (9) threaded connection, sleeve seat (3) outer end is opened and is chiseled a security mouthful (11) that are linked together with ring channel (5), be equipped with rather than assorted lid (12) in security mouthful (11), and lid (12) are connected with sleeve seat (3) through buckle (13).
2. The elevator cylinder with built-in rapid pressurization function according to claim 1, characterized in that: the annular seat (6) comprises a main seat body (601) and an auxiliary seat body (602), and two ends of the main seat body (601) are respectively clamped with two ends of the auxiliary seat body (602).
3. The elevator cylinder with built-in rapid pressurization function according to claim 1, characterized in that: the flexible wiper (8) comprises a sponge layer (801), the sponge layer (801) is fixedly connected to the inner wall of the annular seat (6), and the outer end of the sponge layer (801) is fixedly connected with an outer covering cloth (802) matched with the sponge layer.
4. The elevator cylinder with built-in rapid pressurization function according to claim 1, characterized in that: piston rod (2) outside cover is equipped with a pair of backing ring (14), and backing ring (14) are located between two adjacent annular seat (6), socket (15) have been dug to backing ring (14) outer end.
5. The elevator cylinder with built-in rapid pressurization function according to claim 4, characterized in that: a pair of stress grooves (16) are cut at the outer end of the backing ring (14), and the two stress grooves (16) are distributed in bilateral symmetry.
6. The elevator cylinder with built-in rapid pressurization function according to claim 1, characterized in that: the annular scraper knife (4) is preferably made of stainless steel materials, and the thickness of the annular scraper knife (4) is preferably 2-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021589473.7U CN213171275U (en) | 2020-08-04 | 2020-08-04 | Elevator machine oil cylinder with built-in rapid pressurization function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021589473.7U CN213171275U (en) | 2020-08-04 | 2020-08-04 | Elevator machine oil cylinder with built-in rapid pressurization function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213171275U true CN213171275U (en) | 2021-05-11 |
Family
ID=75798062
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021589473.7U Expired - Fee Related CN213171275U (en) | 2020-08-04 | 2020-08-04 | Elevator machine oil cylinder with built-in rapid pressurization function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213171275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215823A (en) * | 2021-11-16 | 2022-03-22 | 武泽浩 | Constant throttling type buffer structure high-pressure oil cylinder |
-
2020
- 2020-08-04 CN CN202021589473.7U patent/CN213171275U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215823A (en) * | 2021-11-16 | 2022-03-22 | 武泽浩 | Constant throttling type buffer structure high-pressure oil cylinder |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210511 |