CN203477761U - S tube - Google Patents
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- CN203477761U CN203477761U CN201320559815.4U CN201320559815U CN203477761U CN 203477761 U CN203477761 U CN 203477761U CN 201320559815 U CN201320559815 U CN 201320559815U CN 203477761 U CN203477761 U CN 203477761U
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- 238000005452 bending Methods 0.000 claims abstract description 38
- 238000009825 accumulation Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000005299 abrasion Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 description 7
- 238000005086 pumping Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a S pipe, include: the pipe body is provided with an inlet, an outlet, a first bending section close to the inlet, a second bending section close to the outlet and a connecting section connected between the first bending section and the second bending section, wherein the upper profile and/or the lower profile of the cross section of each part of the inner wall of the pipe body selectively forms a curve with a variable radius according to the abrasion or accumulation condition of each part of the inner wall of the pipe body so that the abrasion or accumulation of the inner wall where the curve is positioned is reduced compared with that when the radius of the cross section is equal to a constant radius, and the constant radius is the maximum radius along the width direction of the cross section. The utility model provides a S pipe, with the upper and lower part profile of the cross section of the inner wall of body each department according to the circumstances of the interior long-pending material of body or wearing and tearing design selectively for becoming radial curve, can reduce or improve the concrete flow rate that flows in the pipe body under the unchangeable circumstances of flow, reduce the long-pending material or the wearing and tearing circumstances of this department, guarantee S pipe wait the life-span state everywhere, it is extravagant to reduce the material.
Description
Technical Field
The utility model relates to a concrete pumping mechanical equipment field especially relates to a S pipe.
Background
At present, the distribution mechanism in the domestic and foreign concrete pumping equipment has a plurality of modes, and the distribution mechanism in the S-shaped pipe form is most widely applied.
The S-pipe distribution mechanism is a reciprocating swing mechanism and is used for conveying concrete materials with pressure in the two concrete cylinders to the same outlet through the S-pipe which swings intermittently. The S-tube is the most important part and wearing part in the dispensing mechanism. Since the concrete flowing through the S-pipe has a certain pressure and velocity, it is liable to cause abrasion or accumulation in the S-pipe. According to distribution mechanisms of different models, parameters such as the length and the height of the S pipe need to be changed, and the abrasion and accumulation positions of the changed S pipe are the same, but in conclusion, the positions with serious abrasion and accumulation are mainly concentrated on a bent part (such as an area A in figure 1) at an outlet and a bent part (such as an area B in figure 1) at an inlet of the S pipe, so that the average service life of the S pipe is shortened, the requirements of service life waiting for service life cannot be met, the waste of materials is caused, and the working efficiency and the economic efficiency of the concrete pumping machine are influenced.
Therefore, the S-pipe needs to reduce wear and prolong the service life, and to smoothly flow concrete and reduce pumping resistance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a S pipe to solve the easy technical problem who wears off of S pipe among the current concrete pumping mechanism.
In order to achieve the above object, the present invention provides an S-pipe, including a pipe body, a pipe body having an inlet, an outlet, a first bending section near the inlet, a second bending section near the outlet, and a connecting section connected between the first bending section and the second bending section, wherein an upper profile and/or a lower profile of a cross section of each location of an inner wall of the pipe body selectively forms a curve with a variable radius according to a wear or a material accumulation condition of each location of the inner wall of the pipe body so as to reduce wear or material accumulation when the wear or material accumulation of the inner wall where the curve is located is equal to a constant radius, the constant radius is a maximum radius in a width direction along the cross section.
Further, the area of the cross section of the inner wall where the curve is located becomes larger or smaller than when the radius of the cross section is equal to the constant radius, so that the wear or material accumulation area of the inner wall is reduced as compared with when the radius of the cross section of the inner wall is equal to the constant radius.
Further, the cross section of the inner wall of the second curved section is a first cross section, and the lower profile of the first cross section forms a curve having a radius larger than a first constant radius of the first cross section such that the area of the first cross section is larger than the area of the first cross section when the first cross section is a circle having a radius equal to the first constant radius, the first constant radius being a maximum radius in a width direction of the first cross section.
Further, the upper profile of the first cross-section forms a curve that is a semi-circular curve having a radius equal to the first constant radius.
Further, the upper profile of the first cross-section forms a curve with a radius larger than the first constant radius.
Further, the upper profile of the first cross-section forms a curve with a radius smaller than the first constant radius.
Further, the cross section of the inner wall of the second curved section is a first cross section, and the upper profile of the first cross section forms a curve having a radius larger than a first constant radius of the first cross section so that the area of the first cross section is larger than the area of the first cross section when the first cross section is a circle having a radius equal to the first constant radius, the first constant radius being a maximum radius in a width direction of the first cross section.
Further, the cross section of the inner wall of the second curved section is a first cross section, and the upper profile of the first cross section forms a curve having a radius smaller than a first constant radius of the first cross section such that the area of the first cross section is smaller than the area of the first cross section when the first cross section is a circle having a radius equal to the first constant radius, the first constant radius being a maximum radius in a width direction of the first cross section.
Further, the cross section of the inner wall of the first curved section is a second cross section, and the lower profile of the second cross section forms a curve having a radius larger than a second constant radius of the second cross section such that the area of the second cross section is larger than the area of the second cross section when the second cross section is a circle having a radius equal to the second constant radius, the second constant radius being a maximum radius in a width direction of the second cross section.
Further, the upper profile of the second cross-section forms a curve with a radius equal to the second constant radius of the second cross-section.
Further, the upper profile of the second cross-section forms a curve with a radius larger than the second constant radius of the second cross-section.
Further, the upper profile of the second cross-section forms a curve with a radius smaller than the second constant radius of the second cross-section.
Further, the cross section of the inner wall of the first curved section is a second cross section, and the lower profile of the second cross section forms a curve having a radius smaller than a second constant radius of the second cross section such that the area of the second cross section is smaller than the area of the second cross section when the second cross section is a circle having a radius equal to the second constant radius, the second constant radius being the maximum radius in the width direction of the second cross section.
Further, the upper profile of the second cross-section forms a curve with a radius equal to the second constant radius of the second cross-section.
Further, the upper profile of the second cross-section forms a curve with a radius larger than the second constant radius of the second cross-section.
Further, the upper profile of the second cross-section forms a curve with a radius smaller than the second constant radius of the second cross-section.
Further, the radius of the curve formed by the upper profile of the cross section gradually changes from the two end points of the upper profile to the middle point; the lower profile of the cross-section forms a curve with a radius that gradually changes from the two end points of the lower profile towards the midpoint.
The utility model discloses following beneficial effect has:
the utility model provides a S pipe, include: the pipe body is provided with an inlet, an outlet, a first bending section close to the inlet, a second bending section close to the outlet and a connecting section connected between the first bending section and the second bending section, wherein the upper profile and/or the lower profile of the cross section of each part of the inner wall of the pipe body selectively forms a curve with a variable radius according to the abrasion or accumulation condition of each part of the inner wall of the pipe body so that the abrasion or accumulation of the inner wall where the curve is positioned is reduced compared with that when the radius of the cross section is equal to a constant radius, and the constant radius is the maximum radius along the width direction of the cross section. The utility model provides a S pipe, with the upper and lower part profile of the cross section of the inner wall of each department of body according to the pipe body in long-pending material or the condition of wearing and tearing design selectively for become radial curve, can reduce or improve the velocity of flow of flowing through the concrete of certain department in the body under the unchangeable condition of flow, and then reduce the long-pending material or the wearing and tearing condition of this department, guarantee S pipe wait the life-state everywhere, reduce the material extravagant.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a schematic view of a half-section of a prior art S-tube;
FIG. 2 is a schematic diagram of a half-section structure of an S-shaped pipe according to a preferred embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a second bend section of the S-tube of the preferred embodiment of the invention; and
fig. 4 is a schematic cross-sectional view of a first curved section of an S-tube according to a preferred embodiment of the invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 2 to 4, the present invention provides an S-pipe, which includes a pipe body 10, the pipe body 10 having an inlet 11, an outlet 13, a first bending section 12 near the inlet 11, a second bending section 14 near the outlet 13, and a connection section 15 connected between the first bending section 12 and the second bending section 14. As can be seen from fig. 2, the first bending section 12 is bent downwards, the second bending section 14 is bent upwards, and the pumped concrete is prone to inner wall or material accumulation in two bending parts during the process of passing through the S-pipe, for example, the lower part of the first bending section 12 and the upper part of the second bending section 14 are prone to both material accumulation and inner wall abrasion; whereas the lower part of the second curved section is more susceptible to wear. In order to extend the service life of the S-pipe, wear and material accumulation in the respective portions of the first and second curved sections 12, 14 may be mitigated by varying the flow rate of concrete through the first and second curved sections 12, 14. Therefore, the present invention adopts the technical solution that the shape of the upper profile or the lower profile of the cross section of the inner wall at the corresponding position is selectively changed according to the wear or material accumulation condition of the inner wall of the pipe body 10, and the changed upper profile or the changed lower profile forms a curve with a variable radius, so that the wear or material accumulation condition of the inner wall at the position can effectively reduce the area of wear or material accumulation compared with the case that the radius of the cross section is equal to a constant radius, wherein the constant radius is the maximum radius along the width direction of the cross section at the corresponding position. It should be noted that, since the S-shaped pipe needs to swing during operation and the swing distance on both sides is the same, the width of both sides of the S-shaped pipe can be kept constant no matter how the upper profile and the lower profile of the S-shaped pipe change, and the maximum radius in the width direction can be the radius of the cross section of the S-shaped pipe before the S-shaped pipe is modified according to the technical solution of the present application. The upper and lower portions of the S-tube described herein are also divided by a plane bounded by the maximum radius in the width direction.
In fact, in order to improve the wear and the accumulation of the S-pipe, the purpose of the deformation of the upper and lower profiles of the cross-section of the inner wall at each location of the S-pipe is to make the area of the cross-section larger or smaller after the deformation than before the deformation (the cross-section is a circle with a radius equal to a constant radius), so as to reduce or increase the flow rate of the concrete flowing through the corresponding location inside the S-pipe. The technical scheme that this application was taken, not only the area through the cross section that changes the S pipe and then change the velocity of flow and solve the problem that the inner wall of S pipe is long-pending material and wearing and tearing, the key is to select the design for inner wall cross section is non-circular S pipe for circular shape S pipe with current inner wall cross section, because wearing and tearing or long-pending material condition mainly take place in the upper portion or the lower part of two bending sections of S pipe, the actual condition can be adapted to more to such design, can reduce the region that takes place wearing and tearing or long-pending material more effectively.
Because the length and the bending angle of the S pipe are different due to different equipment and specific working conditions of the S pipe, the abrasion area and the material accumulation area of different S pipes may be slightly different. In actual processing, one problem of one part of the S-shaped pipe (such as the problem of material accumulation of the first bending section only) can be improved according to specific conditions, and a plurality of problems of a plurality of parts (such as the problem of material accumulation of the first bending section and the problem of abrasion of the second bending section) can be comprehensively considered for improvement, so that when one problem is solved, another problem is aggravated, and comprehensive consideration is needed to achieve a balance.
In order to solve the problem that the lower region of the second bending section 14 is easy to wear, the application adopts the scheme that the radius of a curve formed by the lower profile of the cross section of the region is increased so as to increase the area of the cross section of the region and reduce the flow speed. For convenience of description, the cross section of the inner wall of the second curved section 14 is defined as a first cross section, and the above-mentioned constant radius is a maximum radius in the width direction of the first cross section, which is defined as a first constant radius (a radius of a dotted line portion shown in fig. 3). After the improvement according to the technical scheme of the application, the radius of a curve formed by the lower profile of the first cross section is larger than the first constant radius, so that the area of the first cross section is larger than the area of the first cross section when the first cross section is a circle with the radius equal to the first constant radius.
As a specific embodiment, after the lower profile of the first cross-section is modified, the profile shape of the cross-section of the other portion is not changed by considering the wear or the material accumulation of the other portion, so that the upper profile of the first cross-section may form a curve having a radius equal to the radius of the semicircular curve of the first constant radius. In this case, the modified second curved section 14 has a semicircular upper half, and an elliptical or other non-semicircular curved lower half.
For the convenience of processing and ensuring the uniform stress of the portions on both sides of the S-tube, the lower portion of the second curved section 14 may be stretched into an ellipse with the lowest point of the curve and the largest radius, and the deformation of the ellipse may also be applied to other portions. . It can also be said that the radius of the curve formed by the upper profile of the cross-section gradually changes from the two end points of the upper profile towards the midpoint; the lower profile of the cross-section forms a curve with a radius that gradually changes from the two end points of the lower profile towards the midpoint.
In order to solve the problem of abrasion of the upper area of the second bending section 14, the technical scheme adopted by the application is to stretch the upper profile of the first cross section, so that the radius of a curve formed by the upper profile of the first cross section is larger than the first constant radius. The radius of the curve formed by the upper portion of the second curved section 14 after drawing is larger than the first constant radius, thereby increasing the cross-sectional area of the upper portion of the second curved section 14, decreasing the flow rate, and reducing the wear area.
Aiming at the problem that the material is easily accumulated on the upper part of the second bending section 14, the technical scheme adopted by the application is to shrink the upper profile of the first cross section, so that the radius of a curve formed by the upper profile of the first cross section is smaller than a first constant radius. The radius of the curve formed by the upper part of the second curved section after contraction is smaller than the first constant radius, thereby reducing the cross-sectional area of the upper part of the second curved section 14, increasing the flow rate and reducing the material accumulation area. It can be seen that the upper portion of the second curved section 14 may be subject to both material accumulation and wear, so that how to modify the upper portion profile is selected on a case-by-case basis, and the balance is best achieved by taking into account the considerations.
In order to solve the problem that the lower part of the first bending section 12 is easy to wear, the technical scheme adopted by the application is to stretch the profile of the lower part of the first bending section. For convenience of description, the cross section of the inner wall of the first curved section is defined as a second cross section, and the maximum radius of the second cross section in the width direction is defined as a second constant radius (the radius of the dotted line shown in fig. 4). After drawing, the lower profile of the second cross-section forms a curve with a radius greater than the second constant radius, thereby increasing the area of the lower portion (or the entire cross-sectional area) of the second curved section 14, reducing the flow velocity and reducing the wear area.
Likewise, the radius of the curve formed by the upper profile of the second cross-section may remain constant, i.e. equal to the second constant radius.
Of course, in order to further increase the area of the second cross section and reduce the flow rate, the upper profile of the second cross section may also be stretched such that the upper profile of the second cross section forms a curve with a radius larger than the second constant radius of the second cross section.
In addition, in order to avoid an excessive decrease in the flow rate of the concrete passing through the first curved section 12, the lower material accumulation area of the lower portion of the first curved section 12 is increased while the lower wear area is reduced, and the radius of the curve formed by the upper profile may be appropriately increased, that is, the upper profile of the first curved section 12 may be appropriately contracted while the radius of the curve formed by the lower profile is increased.
Aiming at the problem that the lower part of the first bending section 12 is easy to accumulate, the technical scheme adopted by the application is to shrink the profile of the lower part of the first bending section, so that the radius of a curve formed by the profile of the lower part of the second cross section is smaller than the second constant radius, and the area of the second cross section is smaller than the area when the cross section is the second constant radius, namely the area is reduced, the flow speed is increased, and the accumulation area is reduced.
While reducing the build-up, the shape of the upper profile of the first curved section 12 may not be changed, i.e. the radius of the curve formed by the upper profile of the second cross-section is equal to the second constant radius.
It is also possible to draw the upper contour of the second cross-section outwardly to a degree, if necessary, that the radius of the curve formed by the upper contour of the second cross-section is larger than the second constant radius, which increases the area of the second cross-section to a degree, but it is just as good as the increased area is smaller than the decreased area of the second cross-section, to ensure that the material accumulation area in the lower part of the first curved section can be reduced.
It is also possible to stretch the upper profile of the second cross-section such that the radius of the curve formed by the upper profile of the first curved segment 12 is smaller than the second constant radius of the second cross-section, which enables to further reduce the area of the second cross-section and to increase the flow rate.
The shape of the connecting section 15 may vary according to the shape of the first and second curved sections 12 and 14, and if the cross section of the inner wall of the connecting section 15 is a third cross section, the boundary of the third cross section may also be a closed arc line with a varying radius. Of course, the connecting section 15 may also be undeformed, i.e. the third cross section remains a circular cross section.
Fig. 3 and 4 show only one form in which the cross section of the inner wall of the second curved section 14 and the first curved section 12 is deformed into an oval shape, respectively, and various combinations can be formed according to the various solutions described above.
Taking a certain type of S pipe as an example, the original cross section of the S pipe is a circle with the radius equal to 85mm, the S pipe is reformed according to the technical scheme of the application, so that the lower part of the second bending section is stretched into a non-circular cross section with the maximum radius of 95mm, at the moment, the cross section of the lower area of the second bending section is increased by about 12% compared with the area of the original cross section, the average flow velocity is reduced by about 11%, and the wear area of the lower part of the second bending section is reduced by about 30% as shown by finite element simulation calculation.
The utility model provides a S pipe adopts the form of non-circular cross section, has broken the constraint of cross-sectional geometry to S pipe valve design. The utility model discloses each district section of S pipe valve adopts the cross-section of different shapes, and the velocity of flow of each district section concrete is adjusted to control runner that can be better, avoids taking place long-pending material phenomenon, effectively distributes the wear rate in each district section.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (17)
1. An S-shaped pipe comprises a pipe body (10) and is characterized in that,
the tube (10) having an inlet (11), an outlet (13), a first curved section (12) adjacent to the inlet (11), a second curved section (14) adjacent to the outlet (13), and a connecting section (15) connected between the first curved section (12) and the second curved section (14),
wherein,
the upper profile and/or the lower profile of the cross section of the pipe body (10) at each part of the inner wall selectively forms a curve with a variable radius according to the abrasion or accumulation condition of the pipe body (10) at each part of the inner wall, so that the abrasion or accumulation of the inner wall at the curve reduces the abrasion or accumulation area compared with the abrasion or accumulation area when the radius of the cross section is equal to a constant radius, wherein the constant radius is the maximum radius along the width direction of the cross section.
2. S-tube according to claim 1,
the area of the cross section of the inner wall where the curve is located is larger or smaller than that when the radius of the cross section is equal to the constant radius, so that the abrasion or material accumulation area of the inner wall is reduced compared with that when the radius of the cross section of the inner wall is equal to the constant radius.
3. S-tube according to claim 1,
the cross section of the inner wall of the second curved section (14) is a first cross section, the lower profile of the first cross section forms a curve with a radius larger than a first constant radius of the first cross section so that the area of the first cross section is larger than the area of the first cross section when the first cross section is a circle with a radius equal to the first constant radius, and the first constant radius is the maximum radius in the width direction of the first cross section.
4. S-tube according to claim 3,
the upper profile of the first cross-section forms a curve that is a semi-circular curve having a radius equal to the first constant radius.
5. S-tube according to claim 3,
the upper profile of the first cross-section forms a curve with a radius larger than the first constant radius.
6. S-tube according to claim 3,
the upper profile of the first cross-section forms a curve with a radius smaller than the first constant radius.
7. S-tube according to claim 1,
the cross section of the inner wall of the second curved section (14) is a first cross section, the upper profile of which forms a curve with a radius larger than a first constant radius of the first cross section such that the area of the first cross section is larger than the area of the first cross section when the first cross section is a circle with a radius equal to the first constant radius, the first constant radius being the largest radius in the width direction of the first cross section.
8. S-tube according to claim 1,
the cross section of the inner wall of the second curved section (14) is a first cross section, the upper profile of the first cross section forms a curve with a radius smaller than a first constant radius of the first cross section so that the area of the first cross section is smaller than the area of the first cross section when the first cross section is a circle with a radius equal to the first constant radius, and the first constant radius is the maximum radius in the width direction of the first cross section.
9. S-tube according to any of claims 1 to 8,
the cross section of the inner wall of the first bending section (12) is a second cross section, the radius of a curve formed by the lower profile of the second cross section is larger than a second constant radius of the second cross section, so that the area of the second cross section is larger than the area of the second cross section when the second cross section is a circle with the radius equal to the second constant radius, and the second constant radius is the maximum radius along the width direction of the second cross section.
10. S-tube according to claim 9,
the upper profile of the second cross-section forms a curve with a radius equal to a second constant radius of the second cross-section.
11. S-tube according to claim 9,
the upper profile of the second cross-section forms a curve with a radius larger than a second constant radius of the second cross-section.
12. S-tube according to claim 9,
the upper profile of the second cross-section forms a curve with a radius smaller than a second constant radius of the second cross-section.
13. S-tube according to any of claims 1 to 8,
the cross section of the inner wall of the first bending section (12) is a second cross section, the radius of a curve formed by the lower profile of the second cross section is smaller than a second constant radius of the second cross section, so that the area of the second cross section is smaller than the area of the second cross section when the second cross section is a circle with the radius equal to the second constant radius, and the second constant radius is the maximum radius along the width direction of the second cross section.
14. S-tube according to claim 13,
the upper profile of the second cross-section forms a curve with a radius equal to a second constant radius of the second cross-section.
15. S-tube according to claim 13,
the upper profile of the second cross-section forms a curve with a radius larger than a second constant radius of the second cross-section.
16. S-tube according to claim 13,
the upper profile of the second cross-section forms a curve with a radius smaller than a second constant radius of the second cross-section.
17. S-tube according to claim 1,
the radius of a curve formed by the upper profile of the cross section gradually changes from two end points to a middle point of the upper profile;
the radius of a curve formed by the lower profile of the cross-section gradually changes from two end points to a middle point of the lower profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320559815.4U CN203477761U (en) | 2013-09-10 | 2013-09-10 | S tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320559815.4U CN203477761U (en) | 2013-09-10 | 2013-09-10 | S tube |
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| CN203477761U true CN203477761U (en) | 2014-03-12 |
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| CN201320559815.4U Expired - Lifetime CN203477761U (en) | 2013-09-10 | 2013-09-10 | S tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453279A (en) * | 2013-09-10 | 2013-12-18 | 中联重科股份有限公司 | S tube |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453279A (en) * | 2013-09-10 | 2013-12-18 | 中联重科股份有限公司 | S tube |
| CN103453279B (en) * | 2013-09-10 | 2016-02-03 | 中联重科股份有限公司 | S tube |
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