CN202926589U - Split type piston seal body, split type piston, piston cylinder and concrete pumping equipment - Google Patents
Split type piston seal body, split type piston, piston cylinder and concrete pumping equipment Download PDFInfo
- Publication number
- CN202926589U CN202926589U CN 201220640270 CN201220640270U CN202926589U CN 202926589 U CN202926589 U CN 202926589U CN 201220640270 CN201220640270 CN 201220640270 CN 201220640270 U CN201220640270 U CN 201220640270U CN 202926589 U CN202926589 U CN 202926589U
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- piston
- groove
- flange
- guide ring
- split
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- 238000005086 pumping Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 47
- 239000000314 lubricant Substances 0.000 claims description 36
- 210000004907 gland Anatomy 0.000 claims description 14
- 230000001050 lubricating effect Effects 0.000 abstract description 37
- 239000004519 grease Substances 0.000 abstract description 36
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a split type piston seal, including annular main body, this annular main body is formed with the seal lip along circumference in one end, is formed with annular flange along circumference at the other end, is formed with first annular groove between this annular flange and the seal lip, is formed with a plurality of first logical grooves along circumference distribution on the annular flange, and every first logical groove communicates with each other along annular main body's axial extension and with first annular groove to the width sum in a plurality of first logical grooves is 1/5~1/2 of the outer perimeter of annular main body. Furthermore, the utility model also discloses an use this split type piston seal's split type piston, including the piston cylinder of this split type piston and including the concrete pumping equipment of this piston cylinder. The utility model discloses a form first logical groove on annular flange for lubricating oil or lubricating grease flow to seal lip through first logical groove, lubricate seal lip, and then improve the wear resistance of split type piston seal body.
Description
Technical field
The utility model relates to engineering machinery field, particularly, relates to a kind of Split piston seal, Split piston, piston cylinder and concrete pumping equipment.
Background technique
In the concrete pumping equipments such as concrete pump, pump truck, Vehicle loaded pump, concrete cylinder is housed, concrete piston is housed in concrete cylinder, one end of concrete piston is connected with the adpting flange of oil cylinder by its adpting flange, the other end end face directly contacts with concrete, making whole piston send at main pump under the drive of cylinder piston rod moves reciprocatingly, thereby realize concrete pumpdown is completed in concrete suction action.
Usually comprise one-piece piston and Split piston in existing concrete piston cylinder.Wherein, one-piece piston is stored lubricant oil or lubricating grease by front lip to the space between rear lip, to satisfy sufficient lubrication.But the lubricant oil that one-piece piston is required or the amount of lubricating grease are large, and owing to lacking special-purpose guide ring, the phenomenon of eccentric wear easily occurs.
Be not with oil groove piston or band oil groove piston and comprise in Split piston, for not being with the oil groove piston, during its sufficient lubrication, the amount of required lubricant oil or lubricating grease is large, and lubricant oil or lubricating grease easily run off.For band oil groove piston, the lubricant oil that its sufficient lubrication is required or lubricating grease are about 2/3rds of grooved piston not, but the restricted in flow between different oil grooves due to lubricant oil or lubricating grease, being injected in the lubricant oil at piston middle part and rear portion or lubricating grease is difficult to flow to and needs most lubricated anterior lip port part, make piston reduce wear-resisting property because the anterior lip port part can not get effectively lubricating, and then cause reduce the working life of piston.
The model utility content
The purpose of this utility model is to provide a kind of Split piston seal, and this Split piston seal has higher wear-resisting property.
to achieve these goals, the utility model provides a kind of Split piston seal, this piston sealing body comprises circumferential body, this circumferential body is at one end along circumferentially being formed with sealing lip, wherein, described circumferential body at the other end along circumferentially being formed with annular flange flange, be formed with the first ring connected in star between this annular flange flange and described sealing lip, be formed with a plurality of the first grooves that distribute along circumferentially on described annular flange flange, each described first groove extending axially and communicating with described first ring connected in star along described circumferential body, and the width sum of a plurality of described the first grooves be described circumferential body outer perimeter 1/5 ~ 1/2.
Preferably, be formed with at least one intermediate flange on described circumferential body, this at least one intermediate flange is between described sealing lip and described annular flange flange, and be formed with a plurality of the second grooves that distribute along circumferentially on described at least one intermediate flange, each described second groove extending axially and communicating with the first ring connected in star at described at least one intermediate flange two ends along described circumferential body.
Preferably, the width sum of a plurality of described the second grooves be described circumferential body outer perimeter 1/5 ~ 1/2.
Preferably, described the first groove is identical with the width of described the second groove, and described the first groove with described the second groove along circumferentially aliging.
Preferably, be respectively 8 ~ 16 along described the first groove and described the second groove that circumferentially distribute.
Preferably, the thickness of described guide ring is less than the thickness of described Split piston seal.
Another purpose of the present utility model is to provide a kind of Split piston, and this Split piston has higher working life.
In order to realize above-mentioned another purpose, the utility model provides a kind of Split piston, this Split piston comprises piston rod link, piston body and the gland that is fixed together successively, be provided with guide ring on described piston body, this guide ring is folded between the flange of described piston rod link and described piston body, and be provided with piston sealing body on described gland, this piston sealing body is folded between the flange of the front-end face of described piston body and described gland, wherein, described piston sealing body is according to above-described Split piston seal.
Preferably, described guide ring comprises the guide ring main body, this guide ring main body circumferentially is formed with the guide ring flange on the edge, two ends, make and be formed with the second annular groove between two guide ring flanges, be formed with the 3rd groove on the described guide ring flange of the close described Split piston seal of described guide ring, the 3rd groove extending axially and communicating with described the second annular groove along described guide ring.
Preferably, along the width sum of a plurality of described the 3rd groove that circumferentially distributes be described guide ring main body outer perimeter 1/4 ~ 1/3.
Preferably, the width of described the 3rd groove is less than the width of described the first groove, and the part of described the 3rd groove and described the first groove is along circumferentially aliging.
Preferably, be formed with overlap on the described guide ring flange of the close described piston rod link of described guide ring, the diameter of this overlap is greater than the diameter of described guide ring flange.
Preferably, the thickness of described guide ring is less than the thickness of described Split piston seal.
Another purpose of the present utility model is to provide a kind of piston cylinder, and this piston cylinder has higher working life.
In order to realize above-mentioned another purpose, the utility model provides a kind of piston cylinder, this piston cylinder comprises cylinder body and is positioned at movably piston of this cylinder body, wherein, described piston is above-described Split piston, and be provided with lubricated hydraulic fluid port on described cylinder body, this lubricated hydraulic fluid port is positioned on the cylinder body of travel range of described Split piston.
A purpose more of the present utility model is to provide a kind of concrete pumping equipment, and this concrete pumping equipment has higher working life.
In order to realize an above-mentioned purpose again, the utility model provides a kind of concrete pumping equipment, wherein, this concrete pumping equipment comprises above-mentioned piston cylinder, and in the described Split piston of this piston cylinder and described concrete pumping equipment, main pump send the piston rod of oil cylinder to be connected.
Split piston seal of the present utility model makes lubricant oil or lubricating grease flow to sealing lip by this first groove by form the first groove on annular flange flange, so that sealing lip is lubricated, and then improves the wear-resisting property of Split piston seal.Correspondingly, use this Split piston seal Split piston, comprise the piston cylinder of this Split piston and comprise that the concrete pumping equipment of this piston cylinder all will have higher working life.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with following embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the cross-sectional view of piston cylinder of the present utility model;
Fig. 2 is the side view of Split piston seal of the present utility model;
Fig. 3 is along the sectional view of A-A line in Fig. 2;
Fig. 4 is that the master of Split piston seal of the present utility model looks schematic diagram;
Fig. 5 A is that the master of guide ring of the present utility model looks schematic diagram; Fig. 5 B is the enlarged diagram of partial structurtes in Fig. 5 A.
Description of reference numerals
1 cylinder body 2 Split pistons
11 lubricated hydraulic fluid port 21 Split piston seals
22 guide ring 23 piston rod links
24 piston body 25 glands
211 circumferential body 212 sealing lips
213 annular flange flange 214 first ring connected in stars
215 first groove 216 intermediate flange
217 second groove 221 guide ring main bodys
222 guide ring flange 223 second annular grooves
224 the 3rd groove 225 overlaps
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
The term that uses in the utility model " first ", " second " etc. are used for distinguishing parts, but do not consist of the restriction to parts.
Referring to Fig. 1 to Fig. 4, the utility model relates to a kind of Split piston seal, this Split piston seal is arranged on Split piston, be used for realizing the sealing between the cylinder body of Split piston and piston cylinder, and this Split piston seal by be arranged on Split piston on guide ring match, so that lubricant oil or lubricating grease are remained between guide ring and Split piston seal, realize lubricated to the sealing lip of Split piston seal.
As extremely shown in Figure 4 in Fig. 2, in one embodiment, Split piston seal 21 comprises circumferential body 211, this circumferential body 211 is at one end along circumferentially being formed with sealing lip 212, and at the other end along circumferentially being formed with annular flange flange 213, like this, make to form first ring connected in star 214 between annular flange flange 213 and sealing lip 212, thereby can keep the part of lubricant oil or lubricating grease.As everyone knows, the diameter of sealing lip 212 is larger than cylinder body 1 diameter of piston cylinder, in order to sealing, thereby stops material; And annular flange flange 213 can play the effect of support piston, and the diameter of annular flange flange 213 is slightly less than cylinder body 1 diameter of piston cylinder, so that lubricant oil or lubricating grease flow between Split piston seal 21 and guide ring 22.But, due to stopping of annular flange flange 213, make lubricant oil or lubricating grease not to flow to well on sealing lip 212, thus the working life of having reduced sealing lip 212.
For this reason, can obviously be found out by Fig. 2 and Fig. 4, be formed with a plurality of the first grooves 215 that distribute along circumferentially on annular flange flange 213, each first groove 215 extending axially and communicating with first ring connected in star 214 along circumferential body 211, like this, lubricant oil between guide ring and Split piston seal or lubricating grease just can flow in first ring connected in star 214 by this first groove 215 at an easy rate, and then sealing lip 212 is lubricated fully, thereby the wear-resisting property of raising sealing lip 212.
Wherein, as shown in Figure 2, the first groove 215 has certain width, and this width refers to the straight length L between the sidewall of the first groove 215 both sides.The width that is appreciated that the first groove 215 hour is unfavorable for flowing of lubricant oil or lubricating grease.Therefore, preferably, can increase the width of the first groove 215 in the utility model, the width sum that makes a plurality of the first grooves 215 be circumferential body 211 outer perimeter 1/5 ~ 1/2, to increase the mobility of lubricant oil or lubricating grease, further improve the wear-resisting property of sealing lip 212.
In preferred embodiment, be formed with intermediate flange 216 on circumferential body 211, this intermediate flange 216 thereby is divided into first ring connected in star 214 two-part that are positioned at intermediate flange 216 two ends between sealing lip 212 and annular flange flange 213.When the amount less of lubricant oil or lubricating grease, 216 pairs of a small amount of lubricant oil of intermediate flange or lubricating grease can play the effect of effective distribution.The diameter that is appreciated that intermediate flange 216 is less than cylinder body 1 diameter of piston cylinder, but equally because intermediate flange 216 can be to producing certain stopping along the axially movable lubricant oil of circumferential body 211 or lubricating grease.in order to address this problem, can form a plurality of the second grooves 217 that distribute along circumferentially on intermediate flange 216, each second groove 217 extending axially and communicating with the first ring connected in star 214 that is positioned at intermediate flange 216 two ends along circumferential body 211, make the lubricant oil of the first ring connected in star 214 that is positioned at intermediate flange 216 two ends or the lubricating grease can free-flow, especially, be positioned at away from the lubricant oil of the first ring connected in star 214 of sealing lip 212 or lubricating grease and can more easily flow to first ring connected in star 214 near sealing lip 212, so that sealing lip 212 is carried out sufficient lubrication.
In the situation that the thickness of Split piston seal 21 is relatively large, can forms a plurality of intermediate flange 216 on circumferential body 211, and form the second groove 217 on each intermediate flange 216.In other words, preferably can form at least one intermediate flange 216 on circumferential body 211, so that lubricant oil or lubricating grease are reasonably distributed, realize the sufficient lubrication to sealing lip 212.
Equally, for increasing the mobility of lubricant oil or lubricating grease, the width setting that can strengthen the second groove 217.Wherein, the width of the second groove 217 has identical definition with the first groove 215, is the straight length between the sidewall of the second groove 217 both sides.Width sum by a plurality of the second grooves 217 be set to circumferential body 211 outer perimeter 1/5 ~ 1/2, be beneficial to lubricant oil or grease flow to sealing lip 212.
In one embodiment, being positioned at the first groove 215 on annular flange flange 213 and the second groove 217 that is positioned on intermediate flange 216 can be staggeredly arranged, in order to keep lubricant oil or lubricating grease.In fact, in the situation that annular flange flange 213 and intermediate flange 216 can play lubricant oil or the lubricating grease effect of keeping well, preferably, the first groove 215 and the second groove 217 are set to have identical width, and the first groove 215 that makes these same widths with the second groove 217 along circumferentially aliging, to be conducive to moving freely of lubricant oil or lubricating grease.
In addition, in the use of reality, Split piston seal 21 can have different diameters, with the Split piston of applicable different model, in the Split piston seal 21 of different size, be preferably respectively 8 ~ 16 along the first groove 215 and the second groove 217 that circumferentially distribute.In addition, the first groove 215 and the second groove 217 be along circumferentially evenly distributing, and can make lubricant oil or lubricating grease along circumferentially flowing to equably on the sealing lip 212 of Split piston seal 21, thereby guarantee that sealing lip 212 evenly lubricates upwards being able in week.
Based on above-described Split piston seal 21, the utility model can relate to a kind of Split piston.Referring to Fig. 1, Split piston 2 of the present utility model comprises the piston rod link 23 that is fixed together successively, piston body 24, gland 25 and at the guide ring 22 that arranges on piston body 24 and the piston sealing body that arranges on gland 25.Wherein, stopper rod link 23 is used for sending the piston rod of oil cylinder to be connected with the concrete pumping equipment main pump, piston body 24 is used for supporting whole Split piston 2, gland 25 is used for directly contacting with material, and stopper rod link 23, piston body 24 and gland 25 can be fixed together simultaneously by the bolt shown in figure, but are not limited to this means of fixation.In addition, piston rod link 23 can be to connect the multiple link that main pump send the piston rod of oil cylinder, for example in the utility model, uses flange to connect.About the structure of flange, to send the Placement etc. of the piston rod of oil cylinder with main pump be all conventionally known to one of skill in the art, thereby repeat no more.
Particularly, the set-up mode of guide ring 22 is folded between the flange of piston rod link 23 and piston body 24 for this guide ring 22, and the set-up mode of piston sealing body is folded between the flange of the front-end face of piston body 24 and gland 25 for this piston sealing body, and the sealing lip of piston sealing body is positioned at the periphery of gland 25.Wherein, the flange of piston body 24 plays vertically support and restriction effect simultaneously to guide ring 22 and piston sealing body, and the flange of same gland 25 can play vertically support and restriction effect to piston sealing body.Due to unlike the prior art, the piston sealing body that this Split piston 2 adopts is above-mentioned Split piston seal 21, to realize seal action, and above-mentioned Split piston seal 21 has higher working life because its sealing lip 212 can obtain sufficient lubrication, thereby adopts that the Split piston 2 of this Split piston seal 21 is also corresponding to have the higher life-span.
Need to prove, in the utility model, after " forward and backward " refers to that Split piston 2 is arranged in the cylinder body of piston cylinder, direction towards the pumping material is " front ", otherwise, be " afterwards " towards the direction that absorbs material, thereby the front-end face of described piston body 24 (front-end face that comprises the flange of piston body 24) is the right side in Fig. 1.
As shown in Figure 1, when Split piston 2 of the present utility model was worked in the cylinder body of piston cylinder, the effectively lubricating zone of sealing lip 212 was zones shown in b in figure, and best regions of lubrication is the zone shown in a in figure.In order to make lubrication effect reach best, interior lubricant oil or the lubricating grease in zone shown in b is flowed in the zone shown in a as much as possible.
Referring to Fig. 1, Fig. 5 A and Fig. 5 B, guide ring 22 of the present utility model comprises guide ring main body 221, and this guide ring main body 221, makes to be formed with the second annular groove 223 between two guide ring flanges 222 along circumferentially being formed with guide ring flange 222 at two ends.Wherein, guide ring flange 222 diameters of guide ring 22 should be slightly smaller than the diameter of cylinder of piston cylinder, so that lubricant oil or lubricating grease flow to Split piston seal 21 from guide ring 22.
For lubricant oil or lubricating grease are flowed better, can be formed with the 3rd groove 224 on the guide ring flange 222 of the close Split piston seal 21 of guide ring 22, the 3rd groove 224 extending axially and communicating with the second annular groove 223 along guide ring 22, makes after lubricant oil or lubricating grease are injected in the second annular groove 223 and can flow to Split piston seal 21 by the 3rd groove 224.
Further preferably, along the width sum of a plurality of the 3rd grooves 224 that circumferentially distribute be guide ring main body 221 outer perimeter 1/4 ~ 1/3.By making the 3rd groove 224 reach above-mentioned width range, both can so that lubricant oil or lubricating grease flow to Split piston seal 21 rapidly, can guarantee again guide ring flange 222 support strength diametrically.
With after aforesaid Split piston seal 21 matches, in the width range of choice of above-mentioned the 3rd groove 224, preferably make the width of the 3rd groove 224 less than the width of the first groove 215, to guarantee guide ring flange 222 support strength diametrically, and make the part of the 3rd groove 224 and the first groove 215 along circumferentially aliging, so that the lubricant oil in the second annular groove 223 or lubricating grease flow in first ring connected in star 214 rapidly.
Can be found out by Fig. 5 A and Fig. 5 B on the guide ring flange 222 of close piston rod link 23 of guide ring 22 and be formed with overlap 225, the diameter of this overlap 225 is greater than the diameter of guide ring flange 222, one might rather say, after Split piston is installed in the cylinder body of piston cylinder, the diameter of overlap 225 is a bit larger tham the diameter of cylinder body 1, so that overlap 225 can play sealing and dustproof effect.
And, will also be appreciated that Split piston seal 21 must have higher wear-resisting property because of its seal action, the Split piston seal 21 that relative thickness is larger has relatively high wear-resisting property.But for the Split piston seal 21 of being made by elastic material, thickness is larger, and resiliently deformable is more, more easily produces eccentric wear.For this reason, can shaping-orientation ring 22 thickness less than Split piston seal 21, guide ring 22 is supported by the piston body 24 of rigid material, plays leading role and has prevented Split piston seal 21 eccentric wears.
In addition, the utility model also relates to a kind of piston cylinder, and this piston cylinder comprises cylinder body 1 and be positioned at movably piston of this cylinder body 1, and wherein, described piston is according to above-described Split piston 2.As shown in Figure 1, be provided with lubricated hydraulic fluid port 11 on cylinder body 1, should lubricated hydraulic fluid port 11 should be arranged on the cylinder body 1 in the travel range of Split piston 2, with when Split piston 2 moves forward or backward, lubricant oil or lubricating grease are injected between guide ring 22 and Split piston seal 21.
In addition, the utility model also relates to a kind of concrete pumping equipment, this concrete pumping equipment comprises above-mentioned piston cylinder, and in the Split piston 2 of this piston cylinder and concrete pumping equipment, main pump send the piston rod of oil cylinder to be connected, with suction and the pumping procedure that carries out concrete materials.As shown in Figure 1, when moved the inside of cylinder body 1, piston cylinder carried out the suction process when Split piston 2, and when moved the outside of cylinder body 1, piston cylinder carried out pumping procedure when Split piston 2.No matter be suction process or pumping procedure, on cylinder body 1, lubricated hydraulic fluid port 11 is all to Split piston 2 jet lubrication oil or lubricating grease, be lubricated with the sealing lip 212 to Split piston seal 21 on Split piston 2, thus the working life of effectively having improved piston cylinder.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove in addition, each concrete technical characteristics described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (13)
1. Split piston seal, this Split piston seal (21) comprises circumferential body (211), this circumferential body (211) is at one end along circumferentially being formed with sealing lip (212), it is characterized in that, described circumferential body (211) at the other end along circumferentially being formed with annular flange flange (213), be formed with first ring connected in star (214) between this annular flange flange (213) and described sealing lip (212), be formed with a plurality of the first grooves (215) that distribute along circumferentially on described annular flange flange (213), each described first groove (215) extending axially and communicating with described first ring connected in star (214) along described circumferential body (211), and the width sum of a plurality of described the first grooves (215) be described circumferential body (211) outer perimeter 1/5 ~ 1/2.
2. Split piston seal according to claim 1, it is characterized in that, be formed with at least one intermediate flange (216) on described circumferential body (211), this at least one intermediate flange (216) is positioned between described sealing lip (212) and described annular flange flange (213), and be formed with a plurality of the second grooves (217) that distribute along circumferentially on described at least one intermediate flange (216), each described second groove (217) extending axially and communicating with the first ring connected in star (214) at described at least one intermediate flange (216) two ends along described circumferential body (211).
3. Split piston seal according to claim 2, is characterized in that, the width sum of a plurality of described the second grooves (217) be described circumferential body (211) outer perimeter 1/5 ~ 1/2.
4. Split piston seal according to claim 3, it is characterized in that, each described first groove (215) is identical with the width of each described the second groove (217), and described the first groove (215) and described the second groove (217) are along circumferentially aliging.
5. according to claim 3 or 4 described Split piston seals, is characterized in that, is respectively 8 ~ 16 along described the first groove (215) and described the second groove (217) that circumferentially distribute.
6. Split piston, this Split piston (2) comprises the piston rod link (23) that is fixed together successively, piston body (24) and gland (25), be provided with guide ring (22) on described piston body (24), this guide ring (22) is folded between the flange of described piston rod link (23) and described piston body (24), and be provided with piston sealing body on described gland (25), this piston sealing body is folded between the flange of the front-end face of described piston body (24) and described gland (25), it is characterized in that, described piston sealing body is the described Split piston seal of any one according to claim 1 to 5 (21).
7. Split piston according to claim 6, it is characterized in that, described guide ring (22) comprises guide ring main body (221), this guide ring main body (221) circumferentially is formed with guide ring flange (222) on the edge, two ends, make and be formed with the second annular groove (223) between two guide ring flanges (222), be formed with the 3rd groove (224) on the described guide ring flange (222) of the close described Split piston seal (21) of described guide ring (22), the 3rd groove (224) extending axially and communicating with described the second annular groove (223) along described guide ring (22).
8. Split piston according to claim 7, is characterized in that, along the width sum of a plurality of described the 3rd groove (224) that circumferentially distributes be described guide ring main body (221) outer perimeter 1/4 ~ 1/3.
9. Split piston according to claim 7, it is characterized in that, the width of described the 3rd groove (224) is less than the width of described the first groove (215), and the part of described the 3rd groove (224) and described the first groove (215) is along circumferentially aliging.
10. Split piston according to claim 7, it is characterized in that, be formed with overlap (225) on the described guide ring flange (222) of the close described piston rod link (23) of described guide ring (22), the diameter of this overlap (225) is greater than the diameter of described guide ring flange (222).
11. according to claim 6 to 10, the described Split piston of any one, is characterized in that, the thickness of described guide ring (22) is less than the thickness of described Split piston seal (21).
12. piston cylinder, this piston cylinder comprises cylinder body (1) and is positioned at movably piston of this cylinder body (1), it is characterized in that, described piston is the described Split piston of any one according to claim 6 to 11 (2), be provided with lubricant oil (11) on described cylinder body (1), this lubricant oil (11) is positioned on the cylinder body (1) of travel range of described Split piston (2).
13. a concrete pumping equipment is characterized in that this concrete pumping equipment comprises piston cylinder according to claim 12, in the described Split piston (2) of this piston cylinder and described concrete pumping equipment, main pump send the piston rod of oil cylinder to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220640270 CN202926589U (en) | 2012-11-28 | 2012-11-28 | Split type piston seal body, split type piston, piston cylinder and concrete pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220640270 CN202926589U (en) | 2012-11-28 | 2012-11-28 | Split type piston seal body, split type piston, piston cylinder and concrete pumping equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926589U true CN202926589U (en) | 2013-05-08 |
Family
ID=48216558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220640270 Expired - Lifetime CN202926589U (en) | 2012-11-28 | 2012-11-28 | Split type piston seal body, split type piston, piston cylinder and concrete pumping equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926589U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966530A (en) * | 2012-11-28 | 2013-03-13 | 中联重科股份有限公司 | Split type piston seal body, split type piston, piston cylinder and concrete pumping equipment |
| CN107559185A (en) * | 2016-06-30 | 2018-01-09 | 罗伯特·博世有限公司 | Plunger pump and plunger |
| CN110360317A (en) * | 2019-06-06 | 2019-10-22 | 龙口润林家电配件有限公司 | Piston seal and its processing technology |
-
2012
- 2012-11-28 CN CN 201220640270 patent/CN202926589U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966530A (en) * | 2012-11-28 | 2013-03-13 | 中联重科股份有限公司 | Split type piston seal body, split type piston, piston cylinder and concrete pumping equipment |
| CN107559185A (en) * | 2016-06-30 | 2018-01-09 | 罗伯特·博世有限公司 | Plunger pump and plunger |
| CN107559185B (en) * | 2016-06-30 | 2021-01-12 | 罗伯特·博世有限公司 | Plunger pump and plunger for supplying fuel |
| CN110360317A (en) * | 2019-06-06 | 2019-10-22 | 龙口润林家电配件有限公司 | Piston seal and its processing technology |
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