CN102564651B - Concrete pump car, measuring apparatus for conveyer pipe of concrete pump car and induction device mounting base of concrete pump car - Google Patents
Concrete pump car, measuring apparatus for conveyer pipe of concrete pump car and induction device mounting base of concrete pump car Download PDFInfo
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- CN102564651B CN102564651B CN201110445558.7A CN201110445558A CN102564651B CN 102564651 B CN102564651 B CN 102564651B CN 201110445558 A CN201110445558 A CN 201110445558A CN 102564651 B CN102564651 B CN 102564651B
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- sensing device
- mount pad
- concrete
- delivery pipe
- pressure sensitive
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Abstract
The invention provides an induction device mounting base for a concrete conveyer pipe, which comprises a first pipe body used for mounting an induction device, a second pipe body, which is arranged at the outer side of the first pipe body and is coaxial with the first pipe body, and an isolation device arranged between the second pipe body and the first pipe body, wherein a thread guide hole is arranged on the pipe wall of the second pipe body. The invention also provides a pressure measuring apparatus and a friction force measuring apparatus. The pressure measuring apparatus and the friction force measuring apparatus comprise an pressure induction device and an induction device mounting base; the pressure induction device is arranged on the first pipe body of the induction device mounting base, and a signal wire is led out of the second pipe body from the thread guide hole. The invention also provides a concrete pump car, and the induction device mounting base is arranged between a first concrete conveyer pipe and a second concrete conveyer pipe. The induction device mounting base, provided by the invention, effectively avoids the effect of vibration and bending torsion of the conveyer pipe on the induction and can ensure the measuring accuracy.
Description
Technical field
The present invention relates to concrete mixer, particularly the effective sensing device mount pad of concrete conveyance, the effective device for pressure measurement of concrete conveyance and friction measurement device and concrete mixer that this sensing device mount pad is housed.
Background technology
In existing engineering, concrete pumping height is more and more higher, and concrete mixer easily occurs because of the not enough series of concrete pump truck operation difficult problem causing of pumping pressure in the process of delivering concrete.Concrete flows and is subject to the effect of the resistances such as pipeline friction in delivery pipe, and from feed end to discharge end, the force value of every pipe joint wall is successively decreased gradually.In order to ensure concrete pump being delivered to a certain definite height, need to measure fluid losing along stroke pressure along conveyance conduit.Therefore accurately measuring delivery pipe fluid pressure and friction force realizes high-altitude for concrete mixer and builds and be very important.
The pressure measurement mode of existing delivery pipe inner concrete is in original carrier wall, directly to paste foil gauge to measure, there is following defect in this method: 1. because concrete mixer delivery pipe is except bearing the pressure of internal flow, also be subject to the effect of two ends bending, and the state in vibration, therefore directly in tube wall, paste foil gauge pressure measurement, be infeasible in theory, the measured data that obtain and actual tube wall force value differ greatly.2. general delivery pipe itself uniform thickness not, this also causes the deviation of the data measured and actual value can be very large.
At present, the friction force of concrete delivery pipe and internal flow (concrete) is generally measured by the following method: by test pumping system flow, indirectly record concrete at the flow velocity V of delivery pipe, utilize experimental formula f
unit area=K
1+ K
2v calculates the friction force f of unit area
unit area, f in above formula
unit areafor plug flow is for the friction force in pipeline unit area, unit is Pa; K
1for adhesion factor, unit is Pa; K
2for velocity coefficient, unit is Pa/ (ms
-1); V is concrete flow velocity, and unit is m/s.K
1and K
2depend on concrete mix and delivery pipe inwall situation, when delivery pipe inwall smooth enough, normal concrete K
1, K
2value can be calculated with following formula: K
1=(3-0.1S) * 10
2(Pa), K
2=(4-0.1S) * 10
2(Pa/ms
-1), in formula, S is slump, unit is cm.There is following defect in this method: 1. because the flow velocity of pumping procedure concrete in delivery pipe is difficult to accurately test, obtains, and the concrete flow velocity obtaining by test pumping system flow rate conversion has certain deviation with actual concrete flow velocity, cause the friction testing result out of true of concrete in delivery pipe.2. due to the also difficult accurately test of slump in Practical Project, the test error of slump also can cause friction testing result out of true.3. the confidence level of this indirectly testing friction force is still needed and is further verified.
Summary of the invention
The present invention aims to provide the effective sensing device mount pad of a kind of concrete conveyance, the pressure and the inaccurate technical matters of friction measurement result that to solve existing concrete pump truck, because of vibration and the bending power of delivery pipe, cause.
On this basis, the present invention further provides the effective device for pressure measurement of a kind of concrete conveyance.
On this basis, the present invention further provides the effective friction measurement device of a kind of concrete conveyance.
On this basis, the present invention further provides a kind of concrete mixer.
The effective sensing device mount pad of concrete conveyance of the present invention, comprise the first body for sensing device is installed, be arranged at described the first body outside and and coaxial the second body of described the first body and be arranged at described the second body and described the first body between spacer assembly, the tube wall of described the second body arranges cable-through hole.
Preferably, described spacer assembly is flexible pipe or the flexible board that is wound into tubulose.
Preferably, on described spacer assembly, offer isolation channel.
Preferably, described spacer assembly is fixedly connected with described the first body or described the second body.
Preferably, described spacer assembly is some elastomeric elements.
Preferably, described spacer assembly is rigidity ring body, and this rigidity ring body and described the first body are fixing with in described the second body one and contact with another one is smooth.
Preferably, the radial section of described the first body is identical.
Preferably, described the second body two ends arrange bolt connecting flange.
The effective device for pressure measurement of concrete conveyance of the present invention, comprise pressure sensitive device, also comprise above-mentioned any one sensing device mount pad, described pressure sensitive device is arranged at the outside surface of the first body of described sensing device mount pad, and the signal wire of pressure sensitive device is from described cable-through hole leads to described the second body.
Preferably, at least two pressure sensitive devices are set equidistantly on the surperficial same circumference of described the first body.
Preferably, described pressure sensitive device is foil gauge.
The effective friction measurement device of concrete conveyance of the present invention, comprise pressure sensitive device, also comprise above-mentioned any one sensing device mount pad, described pressure sensitive device is arranged on the first body of described sensing device mount pad, and the signal wire of pressure sensitive device is from described cable-through hole leads to described the second body.
Preferably, described the first body two ends interior stretches out and end face forms first step portion and second step portion along axis respectively along place, and a pressure sensitive device is respectively installed by described first step portion and described second step portion.
Concrete mixer of the present invention, comprise the first concrete delivery pipe and the second concrete delivery pipe, above-mentioned any one sensing device mount pad is set between described the first concrete delivery pipe and described the second concrete delivery pipe, the second body of described sensing device mount pad and described the first concrete delivery pipe and described the second concrete delivery pipe are affixed, and the two ends of the first body are docked and in joint, O-ring seal are set with described the first concrete delivery pipe and described the second concrete delivery pipe respectively.
Sensing device mount pad of the present invention adopts bimetallic tube and in spacer assembly is set between the two, has effectively avoided delivery pipe vibration and the impact on sensing device of the bending power that is subject to, thereby can guarantee the accuracy measured.
The effective friction measurement device of concrete conveyance of the present invention obtains the friction force of fluid and tube wall by direct measuring tube wall pressure power, measurement result is accurate.
Accompanying drawing explanation
Fig. 1 is the axial sectional structure schematic diagram of the sensing device mount pad in some embodiment.
Fig. 2 is the radially sectional structure schematic diagram of the sensing device mount pad in some embodiment.
Fig. 3 is for adopting the structural representation of a kind of device for pressure measurement of the sensing device mount pad in above-described embodiment.
Fig. 4 is the axial sectional structure schematic diagram of the effective friction measurement device of a kind of concrete conveyance.
Embodiment
For making those skilled in the art more clearly understand the present invention, below by embodiment, do more detailed description.
Fig. 1 and Fig. 2 show the effective sensing device mount pad of concrete conveyance in some embodiments of the invention.As depicted in figs. 1 and 2, the effective sensing device mount pad of this concrete conveyance comprises for the first body 1 of sensing device is installed, be arranged at the outside of the first body 1 and second body 3 coaxial with described the first body 1, and be arranged at the spacer assembly between the second body 3 and the first body 1, the first body 1 and the second body 3 form a two-layer pipe, spacer assembly makes the suffered bending power of the second body 3 can ignore to the effect of the first body 1, and can the effect of slowing down vibration to the first body 1, the tube wall of the second body 3 arranges cable-through hole 31, for the signal wire of sensing device is drawn.
In the above-described embodiments, spacer assembly adopts rubber hose 2, is reserved with square isolation channel 21 in rubber hose 2, and this square isolation channel 21 plays isolation sensing device, to avoid contacting of rubber and sensing device.The thickness of rubber hose 2 should guarantee that it can play good vibration isolation and every power effect.
The effect that the first body 1 mainly bears tube fluid pressure, preferably adopts high-strength material to make, and makes it have sufficient intensity to bear concrete pressure in pumping procedure.The second body 3 can adopt the delivery pipe of common material.
In certain embodiments, the flexible pipe that spacer assembly also can adopt polyfoam or other flexible material to make, or, with the flexible board that polyfoam or other flexible material are made, be wound into tubulose and be filled between the first body 1 and the second body 3 and also can form spacer assembly.In certain embodiments, spacer assembly can also adopt some elastomeric elements, as flexure strip of spring, arch etc.
In certain embodiments, spacer assembly can be fixedly connected with the first body 1 or the second body 3.
In certain embodiments, the first body 1 adopts the identical body of radial section, to avoid the impact of uneven thickness on sensing device image data structure.
In certain embodiments, spacer assembly adopts rigidity ring body, and this rigidity ring body and the first body are fixed and contact with another one is smooth with in the second body one.
Fig. 3 shows the effective device for pressure measurement of a kind of concrete conveyance, has wherein adopted the sensing device mount pad of above-described embodiment.As shown in Figure 3, the effective device for pressure measurement of this concrete conveyance comprises pressure sensitive device 4 and sensing device mount pad, sensing device mount pad comprises the first body 1, the second body 3 and is arranged at the rubber hose 2 between the two, pressure sensitive device 4 is arranged at the outside surface of the first body 1 by stickup or alternate manner, the signal wire 41 of pressure sensitive device 4 is from cable-through hole 31 leads to the second body 3.
Pressure sensitive device 4 can adopt foil gauge or other pressure inductor.
In Fig. 3 device for pressure measurement, adopted a pressure sensitive device 4.In some embodiments of the invention, on the surperficial same circumference of the first body 1, two or more pressure sensitive devices are set equidistantly, by measuring the strain of multiple directions, carry out the pressure of Fluid Computation in delivery pipe like this, can reduce impact measurement result being caused because of the first body 1 pipe thickness inequality, make measurement result more accurate.
In certain embodiments, the first body 1 adopts the identical body of radial section, to avoid the impact of uneven thickness on foil gauge image data structure, further improves the accuracy of measuring.
Understandably, the sensing device mount pad in the effective device for pressure measurement of concrete conveyance of the present invention can adopt above-mentioned any sensing device mount pad.
Fig. 4 shows the effective friction measurement device of a kind of concrete conveyance.As shown in Figure 4, the effective friction measurement device of this concrete conveyance, comprise pressure sensitive device 4a and sensing device mount pad, sensing device mount pad comprises the first body 1a, be arranged at the second body 3a in the first body 1a outside, and be arranged at the spacer assembly between the two, the tube wall of the second body 3a arranges cable-through hole 3a1, the second body 3a two ends arrange bolt connecting flange 3a2, the interior of the first body 1a two ends stretches out and forms the 1a1 of first step portion and the 1a2 of second step portion with end face along axis respectively along place, the 1a1 of first step portion and the 1a2 of second step portion respectively install a pressure sensitive device 4a, the signal wire of pressure sensitive device 4a is from cable-through hole 3a1 leads to the second body 3a.Wherein, pressure sensitive device 4a adopts piezoelectric force transducer.The effective friction measurement device of this concrete conveyance obtains the friction force of fluid and tube wall by direct measuring tube wall pressure power, measurement result is accurate.
As shown in Figure 4, spacer assembly comprises a rigidity ring body 2a, and this rigidity ring body 2a and the second body 3a are integrated, and rigidity ring body 2a contacts with the smooth outer surface of the first body 1a, and friction force each other can be ignored.
In this embodiment, installation site due to pressure sensitive device 4a, make in application piezoelectric force transducer can with common delivery pipe 6 or 7 end contacts, therefore need be by common delivery pipe 6 or 7 end faces and piezoelectric force transducer 4a contact position finishing, good with need assurance piezoelectric force transducer and common delivery pipe end contact.
Understandably, the second body 3a, except use flange with bolts is connected with concrete delivery pipe, also can be connected with concrete delivery pipe by alternate manner, for example, adopt shaft coupling.Pressure sensitive device 4a also can adopt other pressure inductor.Also can be only at first body 1a one end setting pressure sensing device 4a.
Understandably, the sensing device mount pad in the effective friction measurement device of concrete conveyance of the present invention can adopt above-mentioned any sensing device mount pad.
The various embodiments described above of the present invention all can be used for various concrete mixers.In Fig. 4, show the application process of the effective friction measurement device of a kind of concrete conveyance simultaneously.As shown in Figure 4, sensing device mount pad is arranged between first concrete delivery pipe 6 and the second concrete delivery pipe 7 of concrete mixer, the second body 3a of sensing device mount pad and the first concrete delivery pipe 6 and the second concrete delivery pipe 7 is affixed, the two ends of the first body 1a of sensing device mount pad are docked and in joint, O-ring seal 5 are set with the first concrete delivery pipe 6 and the second concrete delivery pipe 7 respectively.Understandably, the first concrete delivery pipe 6 and the second concrete delivery pipe 7 can be two delivery pipes that form the arbitrary neighborhood of concrete conveyance pipeline, can be also to block gained by a delivery pipe.O-ring seal 5 preferably adopts the O-ring seal that anti-wear performance is good.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment, and all technical schemes belonging under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. the effective sensing device mount pad of concrete conveyance, it is characterized in that: comprise the first body for setting pressure sensing device, be arranged at described the first body outside and and coaxial the second body of described the first body and be arranged at described the second body and described the first body between spacer assembly, the tube wall of described the second body arranges cable-through hole, and described spacer assembly is fixedly connected with described the first body or described the second body.
2. sensing device mount pad according to claim 1, is characterized in that: described spacer assembly is flexible pipe or the flexible board that is wound into tubulose.
3. sensing device mount pad according to claim 1, is characterized in that: on described spacer assembly, offer isolation channel.
4. sensing device mount pad according to claim 1, is characterized in that: described spacer assembly is some elastomeric elements.
5. sensing device mount pad according to claim 1, is characterized in that: described spacer assembly is rigidity ring body, and this rigidity ring body and described the first body are fixing with in described the second body one and contact with another one is smooth.
6. sensing device mount pad according to claim 1, is characterized in that: the radial section of described the first body is identical.
7. sensing device mount pad according to claim 1, is characterized in that: described the second body two ends arrange bolt connecting flange.
8. the effective device for pressure measurement of concrete conveyance, comprise pressure sensitive device, it is characterized in that: also comprise the sensing device mount pad described in claim 1-7 any one, described pressure sensitive device is arranged at the outside surface of the first body of described sensing device mount pad, and the signal wire of pressure sensitive device is from described cable-through hole leads to described the second body.
9. device for pressure measurement according to claim 8, is characterized in that: at least two pressure sensitive devices are set on the surperficial same circumference of described the first body equidistantly.
10. device for pressure measurement according to claim 8, is characterized in that: described pressure sensitive device is foil gauge.
11. 1 kinds of effective friction measurement devices of concrete conveyance, comprise pressure sensitive device, it is characterized in that: also comprise the sensing device mount pad described in claim 1-7 any one, described pressure sensitive device is arranged on the first body of described sensing device mount pad, the signal wire of pressure sensitive device is from described cable-through hole leads to described the second body, the interior of described the first body two ends stretches out and forms first step portion and second step portion with end face along axis respectively along place, a pressure sensitive device is respectively installed by described first step portion and described second step portion.
12. 1 kinds of concrete mixers, comprise the first concrete delivery pipe and the second concrete delivery pipe, it is characterized in that: the sensing device mount pad described in claim 1-7 any one is set between described the first concrete delivery pipe and described the second concrete delivery pipe, the second body of described sensing device mount pad and described the first concrete delivery pipe and described the second concrete delivery pipe are affixed, and the two ends of the first body are docked and in joint, O-ring seal are set with described the first concrete delivery pipe and described the second concrete delivery pipe respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110445558.7A CN102564651B (en) | 2011-12-27 | 2011-12-27 | Concrete pump car, measuring apparatus for conveyer pipe of concrete pump car and induction device mounting base of concrete pump car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110445558.7A CN102564651B (en) | 2011-12-27 | 2011-12-27 | Concrete pump car, measuring apparatus for conveyer pipe of concrete pump car and induction device mounting base of concrete pump car |
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| Publication Number | Publication Date |
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| CN102564651A CN102564651A (en) | 2012-07-11 |
| CN102564651B true CN102564651B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110445558.7A Active CN102564651B (en) | 2011-12-27 | 2011-12-27 | Concrete pump car, measuring apparatus for conveyer pipe of concrete pump car and induction device mounting base of concrete pump car |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111076858A (en) * | 2019-11-29 | 2020-04-28 | 上海建工集团股份有限公司 | Nondestructive measurement method for concrete conveying pressure in conveying pipe |
| CN112962969B (en) * | 2021-04-07 | 2022-12-06 | 新疆龙城建设工程有限公司 | Door frame grouting method |
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| CN2100619U (en) * | 1991-04-09 | 1992-04-01 | 黄添财 | Manometer |
| CN2384082Y (en) * | 1999-06-03 | 2000-06-21 | 北京国泰业兴建材销售有限公司 | Double-layer plastic pipe |
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| CN201373242Y (en) * | 2009-02-25 | 2009-12-30 | 扬州柳工建设机械有限公司 | Pressure measuring device for conveying pipeline of concrete conveying pump |
| CN101994880A (en) * | 2009-08-06 | 2011-03-30 | Tpr非柏得两合公司 | Double-layer pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100785654B1 (en) * | 2007-05-26 | 2007-12-14 | 홍두희 | An apparatus for transporting concrete under pressure |
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2011
- 2011-12-27 CN CN201110445558.7A patent/CN102564651B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0129753B1 (en) * | 1983-06-21 | 1988-09-14 | Quartztronics, Inc. | Gas density transducer apparatus |
| CN2100619U (en) * | 1991-04-09 | 1992-04-01 | 黄添财 | Manometer |
| CN2384082Y (en) * | 1999-06-03 | 2000-06-21 | 北京国泰业兴建材销售有限公司 | Double-layer plastic pipe |
| CN2677720Y (en) * | 2001-07-20 | 2005-02-09 | 林厚虎 | Joint |
| CN201209733Y (en) * | 2008-06-19 | 2009-03-18 | 杭州沈氏换热器有限公司 | Double-skin duct connecting device |
| CN101334322A (en) * | 2008-08-06 | 2008-12-31 | 中国原子能科学研究院 | Method for measuring temperature, stress-strain and vibration of high-temperature double-layer pipeline |
| CN201373242Y (en) * | 2009-02-25 | 2009-12-30 | 扬州柳工建设机械有限公司 | Pressure measuring device for conveying pipeline of concrete conveying pump |
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