CN211472606U - Load box for double-tube reversible unidirectional pressurizing grouting - Google Patents
Load box for double-tube reversible unidirectional pressurizing grouting Download PDFInfo
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- CN211472606U CN211472606U CN201921331005.7U CN201921331005U CN211472606U CN 211472606 U CN211472606 U CN 211472606U CN 201921331005 U CN201921331005 U CN 201921331005U CN 211472606 U CN211472606 U CN 211472606U
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Abstract
The utility model relates to a load case with double-barrelled, especially a load case can be consolidated of double-barrelled reversible one-way pressurization slip casting. A load box for double-tube reversible one-way pressurized grouting comprises a hydraulic device, wherein a liquid inlet and a liquid outlet are arranged on two sides of a cylinder body of the hydraulic device, the liquid inlet and the liquid outlet are arranged at different heights, one is positioned at the upper end of the cylinder body, and the other is positioned at the middle end of the cylinder body. The utility model has the advantages of as follows: 1. the slurry quality is ensured, and the filling rate of the load box is improved; 2. the problem of pile breakage caused by the fact that liquid loaded by force application cannot be discharged after a foundation pile self-balancing static load test is solved, and therefore the reinforced load box and the engineering pile form a whole body which continuously bears upper load through grouting reinforcement of the load box, and the pile body strength and integrity of the foundation pile are guaranteed.
Description
Technical Field
The utility model relates to a load case with double-barrelled, especially a load case can be consolidated of double-barrelled reversible one-way pressurization slip casting.
Background
In the foundation pile self-balancing static load test, the load box is generally provided with only one liquid injection pipe, so that after the test, liquid which is never solidified is filled between a cylinder body and a piston of the load box body, and the pile generates extruded liquid to generate displacement under the vertical pressed state of the engineering.
Although there is the load case now, two root canals of accessible realize going out liquid slip casting, because two root canals all are the same elevation in cylinder body upper end for often can only discharge the extrusion above the liquid outlet elevation during slip casting, and can't arrange the liquid below the liquid outlet elevation to the greatest extent, lead to the slurry of pouring into to be diluted, reduced the concentration of slurry, can not satisfy the reinforcement requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that exists among the prior art, provide a guarantee slurry quality when can realizing the slip casting, improve the load case of double-barrelled reversible one-way pressurization slip casting of sufficient rate.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a load box for double-tube reversible one-way pressurized grouting comprises a hydraulic device, wherein a liquid inlet and a liquid outlet are arranged on two sides of a cylinder body of the hydraulic device, the liquid inlet and the liquid outlet are arranged at different heights, one is positioned at the upper end of the cylinder body, and the other is positioned at the middle end of the cylinder body.
Preferably, the piston in the cylinder body of the hydraulic device is a plunger body with an upper non-uniform section and a lower non-uniform section.
Preferably, the plunger body is formed by combining a cylinder with the same radius and a grooved cylinder, and the grooved cylinder is positioned at the upper end of the plunger body.
Preferably, the cross section of the groove of the grooved cylinder is a plane, an arc or a conical surface.
Preferably, the plunger body is formed by combining two cylinders with different radiuses, and the cylinder with the small radius is positioned at the upper end of the plunger body.
Further, the device comprises a tool type constant-pressure explosive grouting device, wherein the tool type constant-pressure explosive grouting device comprises an out-cylinder grouting vertical pipe, an L-shaped reversing multifunctional device and a horizontal guiding device; the horizontal part of the L-shaped reversing multifunctional device is fixed with the bottom plate and communicated with the horizontal guide device, and the horizontal guide device is communicated with the L-shaped reversing multifunctional device.
Preferably, the length of the vertical part of the L-shaped reversing multifunctional device is larger than the displacement value of the plunger body under the test termination condition of the self-balancing static load test pile.
The flag pole is connected with the flagpole, and the pole sheath is arranged at the tail part of the flagpole; the upper shaping guide flagpole rib penetrates through the edges of the upper plate and the bottom plate or is adhered to the edges of the upper plate and the bottom plate, the flagpole rib is fixed with the upper plate, and the part of the flagpole below the bottom plate is provided with a flagpole sheath; the lower shaping guide flagpole rib penetrates through the bottom plate or is attached to the edge of the bottom plate, the flagpole rib is fixed with the bottom plate, and a flagpole mounting rod sheath is arranged between the upper plate and the bottom plate.
Preferably, the length of the flagpole of the upper shaping guide flagpole rib is greater than the sum of the height of the load box and the displacement value of the plunger piston body under the test termination condition of the self-balancing static load test pile; the length of the flagpole of the lower shaping guide flagpole rib is smaller than the height of the load box and larger than the displacement value of the plunger piston body under the test termination condition of the self-balancing static load test pile.
Preferably, the height of the rod sheath is larger than the displacement value of the plunger body under the test termination condition of the self-balancing static load test pile.
Preferably, the flagpole further comprises an end top, wherein the end top is fixed at the tail part of the flagpole, and the section of the end top is larger than that of the flagpole.
Preferably, the plurality of hydraulic devices are connected in series by a connecting pipe.
Compared with the prior art, the utility model has the advantages of as follows:
1. the slurry quality is ensured, and the filling rate of the load box is improved;
2. the problem of pile breakage caused by the fact that liquid loaded by force application cannot be discharged after a foundation pile self-balancing static load test is solved, and therefore the reinforced load box and the engineering pile form a whole body which continuously bears upper load through grouting reinforcement of the load box, and the pile body strength and integrity of the foundation pile are guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the hydraulic apparatus of FIG. 1;
FIG. 3 is a schematic diagram of a series configuration of a plurality of hydraulic devices according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of the tool type constant pressure explosive grouting device in FIG. 1;
FIG. 5 is a schematic view of the vertical portion of the L-shaped reversing multifunctional device of FIG. 4 in combination with a vertical structure for out-of-cylinder grouting;
FIG. 6 is a schematic view of the upper multi-functional shaped guide flagpole rib of FIG. 1;
FIG. 7 is a schematic view of the lower middle multi-functional shaped guide flagpole rib of FIG. 1;
FIG. 8-1 is a flow chart of the liquid injection and pressurization of the hydraulic apparatus according to the embodiment of the present invention;
FIG. 8-2 is a flow chart of the hydraulic device for inflation and drainage in the embodiment of the present invention;
fig. 8-3 is a flow chart of the grouting of the hydraulic device in the embodiment of the present invention;
FIG. 9 is a flow chart of grouting into the tool type constant pressure explosive grouting device according to the embodiment of the present invention;
FIG. 10 is a schematic view of the multi-functional shaped guide flagpole rib of the embodiment of the present invention;
in the figure, 1, an upper plate; 2. a hydraulic device; 3. a connecting pipe; 4. a tool type constant pressure explosive grouting device; 5. a base plate; 6. an upper displacement wire; 7. an upper displacement wire sheath; 8. the upper part is provided with a multifunctional shaped guide flagpole rib; 9. the lower part is provided with a multifunctional shaped guide flagpole rib; 20. a hydraulic cylinder block; 21. a high-level pipe; 22. a low-level pipe; 23. the upper and lower non-uniform section plunger bodies; 24. sealing rubber strips; 40. a lower displacement wire; 41. grouting a vertical pipe outside the cylinder; 42. an L-shaped reversing multifunctional device; 43. a horizontal guide device; 80. flag ribs; 81. a flagpole; 82. a rod sheath; 83. carrying out end jacking; 90. flag ribs; 91. a flagpole; 92. a rod sheath; 93. and (4) carrying out end jacking.
Detailed Description
It should be noted that, in the present embodiment, the directional words "upper" and "lower" are all described according to the drawings, and do not limit the present invention.
The present invention will be described in further detail with reference to the accompanying drawings 1-10: as shown in fig. 1, a double-tube reversible unidirectional pressurized grouting load box is composed of an upper plate 1, a hydraulic device 2, a connecting pipe 3, a tool type constant-pressure explosive grouting device 4, a bottom plate 5, an upper displacement wire 6, an upper displacement wire sheath 7, an upper multifunctional shaping guide flagpole rib 8 and a lower multifunctional shaping guide flagpole rib 9.
The upper displacement wire sheaths 7 are respectively arranged on two cushion blocks of the upper plate 1 in a symmetrical manner, the upper displacement wires 6 are arranged in the upper displacement wire sheaths 7, and can be directly connected with the upper plate 1 and the bottom plate 5 of the load box to measure the displacement of the load box, and can also be embedded into concrete to directly measure the displacement of the pile body, so that the displacement of the load box or the displacement of the pile body can be measured.
As shown in fig. 2, the hydraulic device 2 is composed of a hydraulic cylinder 20, a high-level pipe 21, a low-level pipe 22, a plunger body 23 with upper and lower non-uniform cross sections, and a sealing rubber strip 24.
The high level pipe 21 of the hydraulic device is arranged at the upper end of the hydraulic cylinder body 20 and has a diameter d2A lower tube 22 having a diameter d at the middle end of the cylinder block 201The liquid inlet and outlet are not at the same elevation, and reversible one-way injection and grouting are performed during liquid injection and pressurization, namely, injection can be performed from the high-level pipe and discharge can be performed from the low-level pipe during liquid injection and pressurization; the slurry can be injected from the low-level pipe and discharged from the high-level pipe, and simultaneously, the liquid in the hydraulic cylinder body 20 can be drained completely during grouting, so that the problem that the injected slurry is diluted because the liquid below the liquid outlet elevation is not drained completely by the traditional double-pipe load box is avoided, the concentration of the slurry is reduced, and the reinforcing requirement cannot be met.
In the hydraulic device, the distance from the top of the plunger body 23 with the upper and lower non-uniform sections to the hydraulic cylinder body is h, the distance from the notch of the plunger body to the hydraulic cylinder body is a, and the distance from the edge of the plunger body to the hydraulic cylinder body is b. Wherein h is slightly larger than d2，a＞b；The value of b is very little, and the plunger body only has slight gap with the cylinder body promptly, simultaneously for hydraulic means better sealed, sets up joint strip 24 between the plunger body and hydraulic cylinder body 20.
The plunger body may be formed by a combination of cylinders of the same radius and grooved cylinders. The cross section of the groove can be a plane, a cambered surface, a conical surface and the like; or two cylinders with different radiuses.
As shown in fig. 3, a plurality of hydraulic devices can be connected in series through the connecting pipe 3, so that the integral filling and grouting of the load box can be realized.
As shown in fig. 4-5, the tool type constant pressure explosive grouting device 4 is composed of a lower displacement wire 40, a lower displacement wire sheath and outer grouting vertical conduit 41, an L-shaped reversing multifunctional device 42 and a horizontal guiding device 43. The number of the out-of-cylinder grouting vertical pipes 41 is two, the top ends of the out-of-cylinder grouting vertical pipes penetrate through the upper plate 1, the bottom ends of the out-of-cylinder grouting vertical pipes are close to the bottom plate, the vertical part of the L-shaped reversing multifunctional device 42 is inserted into the out-of-cylinder grouting vertical pipe 41 and can move up and down in the out-of-cylinder grouting vertical pipe 41, the horizontal part of the L-shaped reversing multifunctional device is welded with the bottom plate 5 and is communicated with the horizontal guide device 43, and; the lower displacement wire 40 can be fixed on the vertical pipe 41 with the sheath of the lower displacement wire and the outer grouting, and the L-shaped reversing multifunctional device 42 has an outer diameter d3The inner diameter of the vertical pipe with the lower displacement wire sheath and the outer grouting is d4，d3＜d4. The horizontal part of the L-shaped reversing multifunctional device 42 has the bearing capacity PL1The pressure-bearing capacity of the horizontal guide device 43 is PL2，PL1＞PL2. The length L of the vertical part of the L-shaped reversing multifunctional device 42 is larger than the displacement value of the upper and lower non-uniform section plunger bodies under the test termination condition of the self-balancing static load test pile.
The out-of-cylinder grouting vertical pipe and the lower displacement wire sheath are integrated into a multifunctional pipe, so that the lower displacement wire can be prevented from being held by concrete, and the out-of-cylinder grouting vertical pipe can be used as an out-of-cylinder grouting vertical conduit. The lower displacement wire sheath and the outer grouting vertical catheter and the horizontal guide device which can be pressed and easily exploded are connected through the L-shaped reversing multifunctional device, and the drainage and diversion effects are achieved. Simultaneously, the lower displacement wire can also be fixed on the device. The horizontal guide device which can be pressed and exploded is adopted to organically connect the lower displacement wire sheath and the out-cylinder grouting vertical pipe at the two ends and the L-shaped reversing multifunctional device into a passage to guide slurry to enter from one end and overflow from the other end. After sampling at the overflow end, the overflow end is closed, and then slurry is injected into the horizontal unidirectional flow explosive device from the inlet end under high pressure until the horizontal unidirectional flow explosive device is detonated, so that the slurry is forced to naturally flow to and fill the gap at the load box.
The multifunctional shaping guide flagpole rib comprises an upper multifunctional shaping guide flagpole rib 8 and a lower multifunctional shaping guide flagpole rib 9. The type and the number of the steel bars of the multifunctional shaping guide flagpole rib are matched with a steel bar cage required by foundation pile design.
As shown in fig. 6, the upper multifunctional shaped guide flagpole rib 8 is formed by combining a flagpole rib 80 formed by bending a steel bar, a flagpole 81, a flagpole sheath 82 and an end top 83; the flagpole 80 is triangular, the flagpole 81 is connected with one side of the flagpole 80, preferably, the flagpole and the flagpole are integrally formed, the end top 83 is fixed at the tail part of the flagpole 81, the section of the end top is larger than that of the flagpole 81, the flagpole sheath 82 is sleeved on the flagpole 81, and the end top 83 is covered in the flagpole sheath 82. The upper multifunctional shaped guide flagpole rib 8 penetrates through the upper plate 1 and the bottom plate 5, the flagpole rib 80 is positioned on the upper plate 1, and the edge of the flagpole rib, which is fixed with the flagpole 81, is welded with the upper plate 1, so that the guide function and the horn rib function required by the specification can be realized; the flagpole 81 penetrates through the upper plate and the bottom plate, the part penetrating out of the bottom plate is sleeved with a flagpole sheath, and the length of the flagpole of the upper multifunctional shaped guide flagpole rib 8 is L3，L3Is larger than the sum of the height of the load box and the displacement value of the upper and lower non-uniform section plunger bodies under the test termination condition of the self-balancing static load test pile. The height of the rod sheath 82 is larger than the displacement value of the upper and lower non-uniform section plunger bodies under the test termination condition of the self-balancing static load test pile.
As shown in fig. 7, the lower multifunctional shaped guide flagpole rib 9 is formed by combining a flagpole rib 90 formed by bending a steel bar, a flagpole 91, a flagpole sheath 92 and an end top 93; the flagpole 90 is triangular, the flagpole 91 is connected with one side of the flagpole 90, preferably, the flagpole and the flagpole are integrally formed, the end top 93 is fixed at the tail part of the flagpole 91, the section of the end top is larger than that of the flagpole 91, the flagpole sheath 92 is sleeved on the flagpole 91, and the end top 93 is covered in the flagpole sheath 92; the length of the flagpole of the lower multifunctional shaped guide flagpole rib 9 is L4，L4Less than the height of the load box. The height of the rod sheath 92 is larger than the displacement value of the upper and lower unequal-section plunger bodies under the test termination condition of the self-balancing static load test pile. The lower multifunctional shaping guide flagpole rib 9 penetrates through the bottom plate 5, the flagpole rib 90 is positioned below the bottom plate, the edge of the flagpole rib, which is fixed with a flagpole 91, is welded with the bottom plate 5, and a flagpole sheath 92 is sleeved on the flagpole positioned between the upper plate and the bottom plate.
When the liquid is injected and pressurized, the hydraulic cylinder body and the upper and lower plunger bodies with non-equal cross sections generate displacement due to thrust, so that a fracture layer appears at the position; when grouting is carried out after a detection test, because the upper flagpole and the lower flagpole are mutually staggered, the exposed flagpole ribs are held by grouting to form a section where the reinforcing steel bars and concrete work together, and thus the compressive strength and the pulling strength of the section are enhanced. The reinforcement cage is free from being directly welded with the load box, and meanwhile, the section of a joint welding line of the reinforcement cage can meet the standard requirement and is not at the same section elevation. The pole sheath can ensure that the flagpole can freely move up and down without limit without being constrained by concrete and can be exposed on a fracture layer after a test.
The working steps are as follows:
firstly, liquid injection and pressurization: when injecting liquid and pressurizing, the high-level pipe is closed, and the liquid is injected from the low-level pipe; the low level pipe can be sealed and injected from the high level pipe.
1. When liquid is not injected, the plunger body is at an initial position; pressure value P1= P2= P3, as shown in fig. 8-1 (1);
2. starting injection pressurization, wherein if the injection is carried out from a high-level pipe, the pressure value P1 is more than P2 is more than P3; if the water is injected from the low-level pipe, the pressure value P3 is more than P2 is more than P1, as shown in the figure 8-1 (2);
3. continuously injecting liquid and pressurizing until the self-balancing static load test pile test termination condition is met, and stopping until a pressure value P1= P2= P3 after the self-balancing static load test pile test termination condition is met, as shown in figure 8-1 (3);
secondly, inflation and drainage: after the liquid injection is finished, air inflation and liquid drainage are started; when the air is inflated and the liquid is discharged, the high-level pipe and the low-level pipe are not closed, and only the high-level pipe and the low-level pipe can be charged and discharged.
4. And (3) starting inflation and liquid drainage, opening the closed high-level pipe or low-level pipe, then injecting gas from the high-level pipe, filling the gas into the cylinder body from top to bottom, and discharging the extrusion liquid from the low-level pipe, wherein the pressure value is P1 > P2 > P3. As shown in FIGS. 8-2 (4);
5. and (4) continuing to inflate until the low level pipe does not discharge liquid any more, indicating that the liquid in the cylinder is drained, stopping inflating, and stopping inflating until the pressure value is P1= P2= P3. As shown in FIGS. 8-2 (5);
thirdly, grouting: when the low-level pipe does not discharge liquid any more, grouting is started; in the case of grouting, the slurry may be injected from the high-position pipe or the low-position pipe.
6. Grouting is started, and if the grouting is injected from the high-level pipe, the pressure value P1 is more than P2 is more than P3; if the water is injected from the low-level pipe, the pressure value P3 is more than P2 is more than P1, as shown in the figure 8-3 (6);
7. grouting is continued until the grouting stops after the other side pipe overflows, and the pressure value after stopping is P1= P2= P3, as shown in figure 8-3 (7);
four, grouting to the tool type constant pressure explosive grouting device
8. After the foundation pile is poured with concrete, injecting liquid into a hydraulic device for pressurization, wherein the upper and lower unequal-section plunger bodies can extend out of the cylinder body, so that a fracture layer can be formed in the load box; the outer grouting vertical pipe also generates the same displacement as the displacement of the upper and lower unequal-section plunger bodies. As shown in fig. 9 (1);
9. and grouting is carried out in the tool type constant-pressure explosive grouting device through the outer grouting vertical pipe. As shown in fig. 9 (2);
10. and (4) continuously grouting until the other side pipe has slurry overflow. After sampling, the overflow end is closed, and then the slurry is injected into the horizontal guiding device from the inlet end under high pressure until the horizontal guiding device is detonated, so that the slurry is forced to naturally flow to and fill the gap at the load box. As shown in fig. 9 (3);
five, multi-functional design direction flagpole muscle
1. When the foundation pile is poured with concrete, the load box is filled with concrete. As shown in fig. 10 (1);
2. after the foundation pile is poured with concrete, when liquid is injected and pressurized, the cylinder body and the upper and lower unequal-section plunger bodies generate displacement due to thrust to cause a fracture layer at the position, at the moment, the upper multifunctional shaping guide flagpole rib is kept still, and the lower multifunctional shaping guide flagpole rib moves downwards along with the bottom plate to expose the flagpole. As shown in fig. 10 (2);
3. and grouting the tool type constant-pressure explosive grouting device until the horizontal unidirectional flow explosive device is detonated, wherein the upper flagpoles and the lower flagpoles are staggered, and the exposed flagpole ribs are wrapped by grouting to form a section where the reinforcing steel bars and the concrete work together. As shown in fig. 10 (3).
The above embodiments are merely preferred embodiments of the present invention, and do not limit the present invention. One or two or all of the hydraulic device, the tool type constant-pressure explosive grouting device and the multifunctional shaped guide flagpole rib can be selected according to actual conditions. In addition, the end top in the multifunctional shaping guide flagpole rib can be selected according to the requirement, namely, an end top structure is not adopted. It will be understood by those skilled in the art that any extension and modification made without departing from the spirit of the present invention are within the scope of the present invention.
Claims (11)
1. The utility model provides a load case of reversible one-way pressurization slip casting of double-barrelled, includes hydraulic means, its characterized in that: a liquid inlet and a liquid outlet are arranged on two sides of a cylinder body of the hydraulic device, the liquid inlet and the liquid outlet are arranged at different heights, one is positioned at the upper end of the cylinder body, and the other is positioned at the middle end of the cylinder body.
2. The load box of double-barreled reversible unidirectional pressurized grouting of claim 1, characterized in that: the piston in the cylinder body of the hydraulic device is a plunger body with an upper non-uniform section and a lower non-uniform section.
3. The load box of double-barreled reversible unidirectional pressurized grouting of claim 2, characterized in that: the plunger body is formed by the combination of the cylinder with the same radius and the cylinder with the groove, and the cylinder with the groove is positioned at the upper end of the plunger body.
4. The load box of double-barreled reversible unidirectional pressurized grouting of claim 3, characterized in that: the section of the groove of the cylindrical groove is a plane, an arc surface or a conical surface.
5. The load box of double-barreled reversible unidirectional pressurized grouting of claim 2, characterized in that: the plunger body is formed by combining two cylinders with different radiuses, and the cylinder with the small radius is positioned at the upper end of the plunger body.
6. The load box of double-barreled reversible unidirectional pressurized grouting of claim 1, characterized in that: the tool type constant-pressure explosive grouting device comprises an out-of-cylinder grouting vertical pipe, an L-shaped reversing multifunctional device and a horizontal guiding device; the horizontal part of the L-shaped reversing multifunctional device is fixed with the bottom plate and communicated with the horizontal guide device, and the horizontal guide device is communicated with the L-shaped reversing multifunctional device.
7. The load box of double-barreled reversible unidirectional pressurized grouting of claim 6, characterized in that: the length of the vertical part of the L-shaped reversing multifunctional device is larger than the displacement value of the plunger body under the test termination condition of the self-balancing static load test pile.
8. The load box of double-barreled reversible unidirectional pressurized grouting of claim 1, characterized in that: the flag pole comprises a flag pole body, a flag pole body and a pole sheath, wherein the flag pole body is connected with the flag pole body; the upper shaping guide flagpole rib penetrates through the edges of the upper plate and the bottom plate or is adhered to the edges of the upper plate and the bottom plate, the flagpole rib is fixed with the upper plate, and the part of the flagpole below the bottom plate is provided with a flagpole sheath; the lower shaping guide flagpole rib penetrates through the bottom plate or is attached to the edge of the bottom plate, the flagpole rib is fixed with the bottom plate, and a flagpole mounting rod sheath is arranged between the upper plate and the bottom plate.
9. The load box of double-barreled reversible unidirectional pressurized grouting of claim 8, characterized in that: the length of the flagpole of the upper shaping guide flagpole rib is greater than the sum of the height of the load box and the displacement value of the plunger piston body under the termination condition of the self-balancing static load test pile test; the length of the flagpole of the lower shaping guide flagpole rib is smaller than the height of the load box and larger than the displacement value of the plunger piston body under the test termination condition of the self-balancing static load test pile.
10. The load box of double-barreled reversible unidirectional pressurized grouting of claim 8, characterized in that: the height of the rod sheath is larger than the displacement value of the plunger body under the test termination condition of the self-balancing static load test pile.
11. The load box of double-barreled reversible unidirectional pressurized grouting of claim 8, characterized in that: the flagpole is characterized by further comprising an end top, wherein the end top is fixed at the tail of the flagpole, and the section of the end top is larger than that of the flagpole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921331005.7U CN211472606U (en) | 2019-08-16 | 2019-08-16 | Load box for double-tube reversible unidirectional pressurizing grouting |
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| CN201921331005.7U CN211472606U (en) | 2019-08-16 | 2019-08-16 | Load box for double-tube reversible unidirectional pressurizing grouting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409523A (en) * | 2019-08-16 | 2019-11-05 | 江西联保工程咨询有限公司 | A kind of load box of two-tube reversible unidirectional grouting under pressure |
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2019
- 2019-08-16 CN CN201921331005.7U patent/CN211472606U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409523A (en) * | 2019-08-16 | 2019-11-05 | 江西联保工程咨询有限公司 | A kind of load box of two-tube reversible unidirectional grouting under pressure |
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Effective date of registration: 20211201 Address after: 330000 plant 2, No. 918, Huohuo Liu Road, Nanchang high tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: Jiangxi Hongli Precision Manufacturing Co.,Ltd. Patentee after: Jiangxi Lianbao Engineering Consulting Co., Ltd Address before: 330046 No. 5, unit 1, building 1, Shuanggang village, baishuihu management office, Nanchang Economic and Technological Development Zone, Nanchang City, Jiangxi Province Patentee before: JIANGXI LIANBAO ENGINEERING CONSULTING Co.,Ltd. |
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