Concrete pole pouring system and method

Abstract

The present invention discloses a concrete pole casting system and method. The purpose is to improve the density of the pole and enhance the strength of the ultra-high performance pole. The system includes a concrete mixing bin, a concrete pump, a pole outer mold, a sealing piston, and a pole inner mold. A feeding channel is provided between the concrete mixing bin and the concrete pump. The pole inner mold is placed inside the pole outer mold. The top of the grouting barrel is placed inside the bottom of the pole outer mold. The side wall of the grouting barrel is provided with a grouting port, which is connected to the concrete pump through a concrete conveying pipe. The sealing piston can movably extend into the space inside the grouting barrel. The pole outer mold is connected to a transfer power system.

Description

Technical Field

[0001] The invention relates to the field of electric power equipment, in particular to a concrete pole casting system. The invention also relates to a casting method related to the concrete pole casting system. Background Art

[0002] As we all know, utility poles are important carriers for erecting electric wires and bridges for power transmission. They are suitable for high and low voltage power transformation in urban and rural power grids and the erection of various overhead power lines and communication cables. They are one of the important infrastructures for power supply and communication. Concrete poles are the most widely used type of overhead distribution lines.

[0003] At present, the preparation of concrete poles is generally carried out using a horizontal mold set horizontally. The mold is placed on a centrifuge and rotated at high speed, so that the concrete loaded into the mold is rotated and centrifuged, and then the concrete is evenly distributed on the inner wall of the mold to form a hollow tubular structure. This process method has the following problems in the production process:

[0004] First, during the centrifugal process, the concrete repeatedly impacts and rubs the inner wall of the steel film, causing significant damage to the mold, a short lifespan, and high cost. Second, since the inner cavity of the outer mold is not restricted by the core mold, it is easy to cause uneven thickness of the pole wall, thereby reducing the overall mechanical properties of the concrete pole. Third, the centrifugal motor used in conjunction with the mold consumes high energy, makes high noise, and has a harsh production environment. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a concrete pole casting system and method, which can be used to manufacture ultra-high performance concrete poles, significantly improve the density of the poles, and enhance the strength of the ultra-high performance poles.

[0006] A concrete pole casting system, the system includes a concrete mixing bin, a concrete pump, a pole outer mold, a sealing piston, and a pole inner mold. A feeding channel is provided between the concrete mixing bin and the concrete pump. The pole inner mold is placed inside the pole outer mold. The top of the grouting barrel is placed inside the bottom of the pole outer mold. A grouting port is provided on the side wall of the grouting barrel. The grouting port is connected to the concrete pump through a concrete conveying pipe. The sealing piston can movably extend into the space inside the grouting barrel. The pole outer mold is connected to a transfer power system.

[0007] Preferably, the transfer power system comprises a hydraulic cylinder, a movable end of which is connected to the outer wall of the pole outer mold, and a fixed end of which is installed on the ground obliquely below the pole outer mold.

[0008] Preferably, a top cover is movably provided at the top of the pole outer mold, and the top of the pole inner mold passes upward through the top cover. The top cover is provided with rib holes and exhaust holes, and the rib holes and exhaust holes are located at the top of the casting space between the pole inner mold and the pole outer mold. A sealing pin is detachably provided at the exhaust hole, and a rib plate is provided above the top of the pole inner mold, and a tensioning hole is provided on the rib plate. The tensioning hole is above the rib hole, and the rib plate is placed on the support block above the top cover.

[0009] Preferably, an annular bottom cover is provided at the bottom end of the pole outer mold, the grouting tube passes through the bottom cover, the outer side thread of the grouting tube is equipped with a bottom bolt, and the bottom bolt and the pole outer mold clamp the bottom cover.

[0010] Preferably, the sealing piston 6 is provided with a limiting hole. When the sealing piston is extended into the grouting barrel until the limiting hole coincides with the grouting port, the limiting column extends into the limiting hole and the grouting port to fix the sealing piston.

[0011] Preferably, a sealing ring is provided between the top of the grouting cylinder and the pole outer mold 5.

[0012] A method for pouring concrete poles, using the above concrete pole pouring system for pouring, comprises the following steps:

[0013] Step 1: Place the inner mold of the pole inside the outer mold of the pole, and rotate the outer mold of the pole to a vertical direction through the transfer power system, with the thin ends of the outer mold of the pole and the inner mold of the pole facing downward;

[0014] Step 2: Put the concrete mixing bin and the concrete pump in place and connect them normally, and connect the grouting port of the grouting barrel to the concrete pump through the concrete delivery pipe;

[0015] Step 3: After the concrete mixture is evenly mixed in the concrete mixing bin, it enters the concrete pump through the feeding channel;

[0016] Step 4: Start the concrete pump. The concrete enters the grouting barrel through the concrete delivery pipe and the grouting port under the pressure of the concrete pump, and then enters the pouring space between the inner and outer forms of the pole. When the concrete fills the pouring space and the vent begins to overflow with concrete mixture, close the vent.

[0017] Step 5: The concrete pump stops pumping, inserts the sealing piston into the grouting barrel and seals the grouting port, and fixes the sealing piston;

[0018] Step 6: Remove the concrete delivery pipe, tilt and level the outer mold of the pole through the transfer power system, and hoist it to the steam curing bin. After curing, pull out the inner mold of the pole, separate the two halves of the outer mold of the pole, take away the finished concrete pole, and complete a concrete pole casting process.

[0019] Step 7: The inner and outer pole molds are reset and the next concrete pole pouring process begins.

[0020] Preferably, in step five, when the sealing piston is extended into the grouting barrel until the limiting hole and the grouting port coincide with each other, a limiting column is extended into the limiting hole and the grouting port to fix the sealing piston.

[0021] Preferably, in step one, the steel bars between the pole outer mold and the pole inner mold are prestressed.

[0022] After adopting the above technical scheme, this structure has the following beneficial effects. For the first time, a "vertical vibration-free stamping casting core concrete" technology is proposed. This technical system has produced many advantages and progress. On the one hand, the high-pressure impact effect generated by the pump is used to achieve vibration-free, self-compacting and high-strength effects; on the other hand, through this vertical pole casting system, not only the time for casting ultra-high performance concrete poles is shortened, but also the operation is simple and quick, which lays the foundation for the mass production of ultra-high performance concrete poles. The mechanical properties of the ultra-high performance concrete poles produced by it are significantly higher than those of the poles produced by the traditional pole casting system, which significantly improves the mechanical properties, reliability and durability of the products, reduces product defects and reduces the scrap rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a concrete pole casting system of the present invention, wherein the internal cross-sectional structure is shown at the outer mold of the pole;

[0024] Figure 2 It is a structural schematic diagram of a concrete pole pouring system of the present invention;

[0025] Figure 3 yes Figure 1 The cross-sectional structural diagram of the inner mold of the middle pole, the lower part of the outer mold of the pole and the grouting tube;

[0026] Figure 4 yes Figure 1 The cross-sectional structural diagram of the inner mold of the middle pole and the top of the outer mold of the pole;

[0027] The reference numerals in the figures are as follows:

[0028] 1—concrete mixing bin; 2—feeding channel; 3—concrete pump; 4—concrete delivery pipe; 5—pole outer mold; 6—sealing piston; 7—pole inner mold; 8—air outlet; 9—grouting port; 10—grouting cylinder; 11—transfer power system; 12—sealing ring; 13—limiting hole; 14—top cover; 15—casting space; 16—bottom cover; 17—bottom bolt; 18—support block; 19—reinforcement hole; 20—reinforcement plate; 21—reinforcement hole. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The following description is only used to explain the present invention and is not used to limit the present invention.

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention provides a concrete pole casting system, which includes a concrete mixing bin 1, a concrete pump 3, a pole outer mold 5, a sealing piston 6, and a pole inner mold 7. A feeding channel 2 is provided between the concrete mixing bin 1 and the concrete pump 3. The pole inner mold 7 is placed inside the pole outer mold 5. The top of the grouting tube 10 is placed inside the bottom of the pole outer mold 5. A grouting port 9 is provided on the side wall of the grouting tube 10. The grouting port 9 is connected to the concrete pump 3 through a concrete conveying pipe 4. The sealing piston 6 can movably extend into the space inside the grouting tube 10. The pole outer mold 5 is connected to a transfer power system 11.

[0031] Preferably, the transfer power system 11 comprises a hydraulic cylinder, a movable end of which is connected to the outer wall of the pole outer mold 5 , and a fixed end of which is installed on the ground obliquely below the pole outer mold 5 .

[0032] Preferably, a top cover 14 is movably provided at the top of the pole outer mold 5, and the top of the pole inner mold 7 passes upward through the top cover 14. A rib hole 19 and an exhaust hole 8 are provided on the top cover 14. The rib hole 19 and the exhaust hole 8 are located at the top of the casting space 15 between the pole inner mold 7 and the pole outer mold 5. A sealing pin is detachably provided at the exhaust hole 8. A rib plate 20 is provided above the top of the pole inner mold 7. A tensioning hole 21 is provided on the rib plate 20. The tensioning hole 21 is above the rib hole 19. The rib plate 20 is placed on the support block 18 above the top cover 14.

[0033] An annular bottom cover 16 is provided at the bottom end of the pole outer mold 5 , and the grouting tube 10 passes through the bottom cover 16 . The outer side of the grouting tube 10 is threadedly matched with a bottom bolt 17 , and the bottom bolt 17 and the pole outer mold 5 clamp the bottom cover 16 .

[0034] Preferably, the sealing piston 6 is provided with a limiting hole 13. When the sealing piston 6 is extended into the grouting cylinder 10 until the limiting hole 13 coincides with the grouting port 9, the limiting column extends into the limiting hole 13 and the grouting port 9 and fixes the sealing piston 6.

[0035] Preferably, a sealing ring 12 is provided between the top of the grouting tube 10 and the pole outer mold 5 .

[0036] The present invention also relates to a method for pouring concrete poles, which uses the above system for pouring, and comprises the following steps:

[0037] Step 1: Place the pole inner mold 7 inside the pole outer mold 5, rotate the pole outer mold 5 to a vertical direction through the transfer power system 11, with the thin ends of the pole outer mold 5 and the pole inner mold 7 facing downward, and place the prefabricated steel bars in the casting space 15 between the pole outer mold 5 and the pole inner mold 7; if necessary, the steel bars between the pole outer mold 5 and the pole inner mold 7 can be prestressed.

[0038] Step 2: Put the concrete mixing bin 1 and the concrete pump 3 in place and connect them normally, and connect the grouting port 9 of the grouting cylinder 10 to the concrete pump 3 through the concrete delivery pipe 4;

[0039] Step 3: After the concrete mixture is evenly mixed in the concrete mixing bin 1, it enters the concrete pump 3 through the feeding channel 2;

[0040] Step 4: Start the concrete pump 3. The concrete enters the grouting tube 10 through the concrete delivery pipe 4 and the grouting port 9 under the pressure of the concrete pump 3, and then enters the pouring space 15 between the inner pole mold 7 and the outer pole mold 5. When the concrete fills the pouring space 15 and the vent 8 begins to overflow the concrete mixture, the vent 8 is closed.

[0041] Step 5: The concrete pump 3 stops pumping, extends the sealing piston 6 into the grouting cylinder 10, blocks the grouting port 9, and fixes the sealing piston 6; for example, when the sealing piston 6 is extended into the grouting cylinder 10 until the limiting hole 13 coincides with the grouting port 9, a limiting column is used to extend into the limiting hole 13 and the grouting port 9, and the sealing piston 6 is fixed.

[0042] Step 6: Remove the concrete delivery pipe 4, tilt and level the pole outer mold 5 through the transfer power system 11, and hoist it to the steam curing warehouse. After the curing is completed, pull out the pole inner mold 7, and then separate the two halves of the pole outer mold 5, take away the finished concrete pole, and complete a concrete pole pouring process;

[0043] Step 7: The inner pole form 7 and the outer pole form 5 are reset to start the next concrete pole pouring process.

[0044] The present invention is described above with reference to only some embodiments, which does not constitute any limitation to the present invention. Any modification, improvement and equivalent substitution made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for pouring concrete poles, characterized in that: Casting is performed by a concrete pole casting system, the concrete pole casting system comprising a concrete mixing chamber (1), a concrete pump (3), a pole outer mold (5), a sealing piston (6), a pole inner mold (7) and a grouting barrel (10), a feeding channel (2) being provided between the concrete mixing chamber (1) and the concrete pump (3), the pole inner mold (7) being placed inside the pole outer mold (5), the top of the grouting barrel (10) being placed inside the bottom of the pole outer mold (5), a grouting port (9) being provided on the side wall of the grouting barrel (10), the grouting port (9) being connected to the concrete pump (3) via a concrete conveying pipe (4), the sealing piston (6) being movably extended into the space inside the grouting barrel (10), and the pole outer mold (5) being connected to a transfer power system (11); The transfer power system (11) comprises a hydraulic cylinder, the movable end of which is connected to the outer wall of the pole outer mold (5), and the fixed end of which is installed on the ground obliquely below the pole outer mold (5); A top cover (14) is movably disposed at the top of the pole outer mold (5); the top of the pole inner mold (7) passes through the top cover (14) upward; a rib insertion hole (19) and an exhaust hole (8) are disposed on the top cover (14); the rib insertion hole (19) and the exhaust hole (8) are located at the top of the casting space (15) between the pole inner mold (7) and the pole outer mold (5); a blocking pin is detachably disposed at the exhaust hole (8); a rib clamping plate (20) is disposed above the top of the pole inner mold (7); a rib tensioning hole (21) is disposed on the rib clamping plate (20); the rib tensioning hole (21) is located above the rib insertion hole (19); and the rib clamping plate (20) is disposed on a support block (18) above the top cover (14); The sealing piston (6) is provided with a limiting hole (13); The pouring process includes the following steps: Step 1: placing the pole inner mold (7) inside the pole outer mold (5), rotating the pole outer mold (5) to a vertical direction through a rotation power system (11), with the thin ends of the pole outer mold (5) and the pole inner mold (7) facing downward, and placing prefabricated steel bars in the casting space (15) between the pole outer mold (5) and the pole inner mold (7); Step 2: Put the concrete mixing bin (1) and the concrete pump (3) in place and connect them normally, and connect the grouting port (9) of the grouting cylinder (10) to the concrete pump (3) through the concrete delivery pipe (4); Step 3: After the concrete mixture is evenly mixed in the concrete mixing bin (1), it enters the concrete pump (3) through the feeding channel (2); Step 4: Start the concrete pump (3), and the concrete enters the grouting tube (10) through the concrete delivery pipe (4) and the grouting port (9) under the pressure of the concrete pump (3), and then enters the pouring space (15) between the inner pole mold (7) and the outer pole mold (5). When the concrete fills the pouring space (15) and the vent hole (8) begins to overflow with concrete mixture, the vent hole (8) is closed; Step 5: the concrete pump (3) stops pumping, the sealing piston (6) is inserted into the grouting tube (10) and the grouting port (9) is blocked, and the sealing piston (6) is fixed; Step 6: Remove the concrete delivery pipe (4), tilt and level the pole outer mold (5) through the transfer power system (11), and hoist it to the steam curing bin. After the curing is completed, pull out the pole inner mold (7), and then separate the two halves of the pole outer mold (5), and take away the finished concrete pole, completing a concrete pole pouring process; Step 7: The inner pole mold (7) and the outer pole mold (5) are reset and the next concrete pole pouring process begins.

2. The method for pouring concrete poles according to claim 1, characterized in that: In step five, when the sealing piston (6) is inserted into the grouting cylinder (10) until the limiting hole (13) and the grouting port (9) coincide with each other, a limiting column is inserted into the limiting hole (13) and the grouting port (9) to fix the sealing piston (6).

3. The method for pouring concrete poles according to claim 1, characterized in that: In step one, the steel bars between the pole outer mold (5) and the pole inner mold (7) are prestressed.

4. The method for pouring concrete poles according to claim 1, characterized in that: The bottom end of the pole outer mold (5) is provided with an annular bottom cover (16), the grouting tube (10) passes through the bottom cover (16), the outer side of the grouting tube (10) is threadedly matched with a bottom bolt (17), and the bottom bolt (17) and the pole outer mold (5) clamp the bottom cover (16).

5. The method for pouring concrete poles according to claim 1, characterized in that: A sealing ring (12) is provided between the top of the grouting cylinder (10) and the pole outer mold (5).

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