Centrifugal forming device for concrete pole

Abstract

The utility model belongs to the field of concrete pole production equipment, and discloses a concrete pole centrifugal forming device which comprises a base and a reinforcement cage. A lower mold and an upper mold which are symmetrically arranged up and down are arranged above the base, a connecting assembly used for being detachably connected with the upper mold is arranged on the lower mold, and when the upper mold and the lower mold are attached, a horizontally-arranged hollow sealed cylindrical shell can be formed; first telescopic air cylinders coaxially arranged with the lower mold are fixed to the inner walls of the two ends of the lower mold, discs are fixed to the output ends of the first telescopic air cylinders, the discs and the cylindrical shell are coaxially arranged and are in sliding connection with the cylindrical shell, and a plurality of blind holes annularly and evenly distributed around the central axes of the discs are formed in the side faces, close to each other, of the two discs. The two disc blind holes are in one-to-one correspondence and are coaxially arranged; the problem that the reinforcement cage shakes in the upper mold and the lower mold during centrifugation in the prior art is solved, and the production quality of concrete poles is improved.

Description

Technical Field

[0001] The present invention belongs to the field of concrete pole production equipment, and particularly relates to a centrifugal forming device for concrete poles. Background Art

[0002] In the production process of concrete poles, a combination of a lower mold and an upper mold is usually used to form the cylindrical cavity of the pole. The production process includes placing the processed steel cage in the lower mold and then pouring concrete. After pouring, the upper mold is fixed on the lower mold and the concrete is solidified by centrifugation. In order to increase the service life and delay the rusting of the steel cage inside the concrete pole, the steel cage needs to be completely wrapped in the concrete layer of the pole. That is, the diameter of the sealed cavity formed after the upper mold and the small mold are fitted is larger than the diameter of the outer wall of the steel cage. As a result, during the centrifugation process, the steel frame may shake in the cylindrical cavity. This shaking may affect the uniformity of the concrete and the final quality of the pole. Therefore, there is a problem in the prior art that the steel cage shakes in the upper and lower molds during centrifugation. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a centrifugal forming device for concrete poles, which solves the problem in the prior art that the steel cage shakes in the upper mold and the lower mold during centrifugation.

[0004] The purpose of this disclosure can be achieved through the following technical solutions:

[0005] A centrifugal forming device for concrete poles, comprising a base and a steel cage;

[0006] A lower mold and an upper mold are symmetrically placed above the base. The lower mold is provided with a connection component for detachably connecting to the upper mold. When the upper mold and the lower mold are fitted together, they can form a sealed cylindrical shell that is horizontally placed and hollow inside.

[0007] A first telescopic cylinder is fixed to the inner wall at both ends of the lower mold and is placed coaxially therewith. A disc is fixed to the output end of the first telescopic cylinder. The disc is placed coaxially with the cylindrical shell and is slidably connected thereto. A plurality of blind holes are opened on the side of the two discs close to each other and are evenly distributed in an annular shape around the central axis. The blind holes of the two discs correspond to each other and are placed coaxially.

[0008] A steel cage is placed between the two discs. The cage includes multiple crossbars, each corresponding to the number of blind holes on any disc. Both ends of each crossbar are inserted into the blind holes of the discs on both sides. The crossbars are fixed by multiple stirrups arranged along the axis of the discs.

[0009] A centrifugal assembly is provided on the base, which is connected to both ends of the lower mold and is used to drive the lower mold to rotate.

[0010] The principles and effects of the above technical solution are as follows:

[0011] By controlling the movement of the telescopic drive disc at the output end of the first telescopic cylinder, both ends of the crossbar on the steel cage are inserted into the corresponding blind holes of the discs at both ends. After both ends of each crossbar are inserted into the blind holes of the discs, the first telescopic cylinder is used to drive the two discs closer to each other, so that the steel cage is fixed between the two discs; in the subsequent centrifugal process, the lower mold drives the first telescopic cylinder and the disc, and at the same time, the two discs and the blind holes limit and fix the steel cage, so that the steel cage rotates synchronously with the disc, which solves the problem of the steel cage shaking in the upper mold and the lower mold during centrifugation in the prior art, thereby improving the production quality of concrete poles.

[0012] The connecting assembly includes a pair of first screws placed vertically upward, the two first screws are rotatably connected to the upper end surfaces of the two ends of the lower mold, the lower ends of the first screws are fixed with coaxially placed rotating shafts, the rotating shafts are rotatably connected to the shell wall of the lower mold, the lower ends of the rotating shafts are connected to first rotating motors, and the first rotating motors are fixedly mounted on the lower end peripheral wall of the lower mold;

[0013] Both ends of the upper mold are provided with threaded holes adapted to the first screw;

[0014] The connecting assembly also includes a pair of nuts, threaded holes passing through the upper peripheral wall of the upper mold, and a pad is fixed to the upper peripheral wall of the upper mold near the threaded holes. A second screw placed coaxially is fixed to the upper end of the first screw, and the diameter of the second screw is smaller than that of the first screw. An avoidance hole is opened on the pad for the second screw to pass through. The nuts correspond to the second screws one by one and can be engaged with their threads.

[0015] The second screw has a spiral direction opposite to that of the corresponding first screw;

[0016] A pair of rectangular frames are fixed on the base and are located at both ends of the lower mold. A third screw and a sliding rod are rotatably connected in the rectangular frames. The third screw and the sliding rod are respectively located on both sides of the lower mold. A sliding bar with a threaded connection is sleeved on the third screw. The sliding rod passes through the sliding bar and is connected to the sliding bar. The upper mold is located between the two sliding bars. The sliding bars are detachably connected to the corresponding ends of the upper mold.

[0017] A pair of second telescopic cylinders are fixedly connected to the slide bars, and the driving rods at the output ends of the second telescopic cylinders are horizontally facing the upper mold. A pair of holes for inserting the driving rods at the output ends of the second telescopic cylinders are opened on the outer side walls at both ends of the upper mold;

[0018] The lower ends of the second screws are fixedly sleeved with gears, and an annular synchronous belt is sleeved between the two gears. A second rotary motor for driving the second screw on the corresponding side is installed on any rectangular frame;

[0019] The centrifugal assembly includes a pair of differentials fixed on the base. The output shafts of the two differentials are placed coaxially with the disc. The output shafts of the two differentials are respectively fixed to the two ends of the lower mold. A third rotating motor is fixedly installed on the base and connected to the input shaft of any differential.

[0020] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0021] Fixed connection: refers to the process of connecting two separate profiles or parts into a complex part or component using fasteners such as screws, bolts and rivets.

[0022] Threaded connection: refers to the connection and fixation between objects achieved through the mutual engagement of threads.

[0023] Beneficial effects of the present disclosure:

[0024] 1. This application controls the movement of the telescopic drive disc at the output end of the first telescopic cylinder, so that both ends of the crossbar on the steel cage are inserted into the corresponding blind holes of the discs at both ends. The two discs are brought closer together, thereby fixing the steel cage between the two discs. During the subsequent centrifugation process, the lower mold drives the first telescopic cylinder and the disc. At the same time, the two discs and the blind holes limit and fix the steel cage, so that the steel cage rotates synchronously with the discs. This solves the problem of the steel cage shaking in the upper and lower molds during centrifugation in the prior art, thereby improving the production quality of concrete poles.

[0025] 2. The coordination of the first screw, the first rotating motor, and the threaded hole facilitates the detachable connection between the upper and lower molds. Furthermore, by providing a nut, a backing plate, and a second screw, and by arranging the second screw in the opposite direction to the corresponding first screw, the stability of the connection between the upper and lower molds can be improved, thereby preventing loosening during centrifugation.

[0026] 3. Through the coordinated arrangement of the rectangular frame, the third screw, the slide rod, the slide bar, the gear, the annular synchronous belt and the second rotating motor, it is convenient to synchronously drive the third screws on both sides to rotate, and then synchronously control the lifting and movement of the slide bars on both sides. Through the arrangement of the second telescopic cylinder and the hole groove, the connection between the slide bar and the upper mold can be selectively controlled, thereby facilitating the automatic control of the lifting and lowering of the upper mold, and at the same time, it will not interfere with the rotation of the upper mold during centrifugation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present disclosure;

[0029] Figure 2 It is a schematic diagram of the overall structure of the present disclosure from different perspectives;

[0030] Figure 3 It is a partial structural diagram of the lower mold of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the disk part of the present invention;

[0032] Figure 5 This is an appendix to the present disclosure Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0033] Figure 6 It is a partial structural schematic diagram of the upper mold of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0035] Combined with this Figures 1 to 6 The following describes an embodiment of a centrifugal forming device for concrete poles. Specifically, the centrifugal forming device for concrete poles is constructed as a split structure, which includes a base 100, a lower mold 200, an upper mold 300, a first telescopic cylinder 700, a disc 600, a steel cage, and a centrifugal assembly. By controlling the movement of the telescopic drive disc 600 at the output end of the first telescopic cylinder 700, both ends of the crossbars 501 on the steel cage are inserted into the corresponding blind holes 601 of the discs 600 at both ends. After both ends of each crossbar 501 are inserted into the corresponding blind holes 601 of the discs 600, , and then the two discs 600 are driven to approach each other by the first telescopic cylinder 700, so that the steel cage is fixed between the two discs 600; in the subsequent centrifugal process, the lower mold 200 drives the first telescopic cylinder 700 and the disc 600, and at the same time, the steel cage is limited and fixed by the two discs 600 and the blind hole 601, so that the steel cage rotates synchronously with the disc 600, solving the problem of the steel cage shaking in the upper mold 300 and the lower mold 200 during centrifugation in the prior art, thereby improving the production quality of concrete poles.

[0036] Please refer to Figures 1 to 6 , a centrifugal forming device for concrete poles, comprising a base 100 and a steel cage;

[0037] A lower mold 200 and an upper mold 300 are symmetrically placed above the base 100. The lower mold 200 is provided with a connecting assembly for detachably connecting to the upper mold 300. When the upper mold 300 and the lower mold 200 are attached, they can form a sealed cylindrical shell that is horizontally placed and hollow inside.

[0038] A first telescopic cylinder 700 is fixed to the inner wall at both ends of the lower mold 200, positioned coaxially therewith. A disc 600 is fixed to the output end of each first telescopic cylinder 700. The discs 600 are placed coaxially with the cylindrical shell and are slidably connected thereto. The side surfaces of the two discs 600 that are close to each other are each provided with a plurality of blind holes 601 evenly distributed in an annular pattern around their central axis. The blind holes 601 of the two discs 600 correspond one to one and are coaxially positioned.

[0039] A steel cage is placed between the two discs 600. The steel cage includes a plurality of cross bars 501. The cross bars 501 correspond to the blind holes 601 on each disc 600 in number and one-to-one. Both ends of each cross bar 501 are inserted into the blind holes 601 on both sides of the disc 600. The cross bars 501 are fixed by a plurality of stirrups 502 arranged along the axis of the disc 600.

[0040] A centrifugal assembly is provided on the base 100 , which is connected to both ends of the lower mold 200 and is used to drive the lower mold 200 to rotate.

[0041] The lower mold 200 and the upper mold 300 are usually made of high-strength steel or cast iron to ensure that the molds can withstand the centrifugal force and high pressure of concrete during the centrifugal process; steel materials such as carbon steel and alloy steel are common choices.

[0042] The first telescopic cylinder 700 is usually made of high-strength aluminum alloy or stainless steel to ensure corrosion resistance and long-term stability; the seals and piston rings inside the first telescopic cylinder 700 need to use wear-resistant and corrosion-resistant materials, such as fluororubber or polytetrafluoroethylene.

[0043] The disc 600 is generally made of high-strength steel or cast iron to withstand the force generated by the centrifugal action of concrete; the material of the disc 600 needs to have good mechanical strength and wear resistance to ensure stability during long-term use.

[0044] When in use, first separate the upper mold 300 from the lower mold 200, then lift the steel cage and place it between the two discs 600 of the lower mold 200, and by controlling the telescopic drive disc 600 at the output end of the first telescopic cylinder 700 to move, both ends of the crossbar 501 on the steel cage are inserted into the corresponding blind holes 601 of the two end discs 600. After both ends of each crossbar 501 are inserted into the blind holes 601 of the disc 600, the first telescopic cylinder 700 is used to drive the two discs 600 closer to each other, so that the steel cage is fixed between the two discs 600. Then, concrete is poured between the two discs. The upper mold 300 is installed on the lower mold 200, and the centrifugal assembly is turned on to drive the lower mold 200 and the upper mold 300 to rotate. After centrifugal treatment and solidification, a concrete pole is formed; during the centrifugal process, the lower mold 200 drives the first telescopic cylinder 700 and the disc 600. At the same time, the steel cage is limited and fixed by the two discs 600 and the blind hole 601, so that the steel cage rotates synchronously with the disc 600, which solves the problem of the steel cage shaking in the upper mold 300 and the lower mold 200 during centrifugation in the prior art, thereby improving the production quality of the concrete pole.

[0045] In order to facilitate the detachable connection between the lower mold 200 and the upper mold 300, the connecting assembly includes a pair of first screws 402 placed vertically upward. The two first screws 402 are rotatably connected to the upper end surfaces of the two ends of the lower mold 200. The lower ends of the first screws 402 are fixed with coaxial rotating shafts, which are rotatably connected to the shell wall of the lower mold 200. The lower ends of the rotating shafts are connected to first rotating motors 403, which are fixedly mounted on the lower end peripheral wall of the lower mold 200.

[0046] Both ends of the upper mold 300 are provided with threaded holes 301 adapted to fit the first screw 402;

[0047] When the upper mold 300 moves downward, the first rotary motor 403 can be turned on to drive the first screw 402 to rotate, so that the first screw 402 extends into the threaded hole 301 and is threadedly connected thereto.

[0048] In order to improve the stability of the connection between the lower mold 200 and the upper mold 300, the connection assembly further includes a pair of nuts 405. The threaded hole 301 passes through the upper peripheral wall of the upper mold 300. A pad 401 is fixed to the upper peripheral wall of the upper mold 300 near the threaded hole 301. A second screw 404 placed coaxially is fixed to the upper end of each first screw 402. The diameter of the second screw 404 is smaller than that of the first screw 402. An avoidance hole is opened on the pad 401 for the second screw 404 to pass through. The nuts 405 correspond one-to-one with the second screw 404 and can be threadedly engaged with it.

[0049] Initially, the nuts 405 are separated from the second screw 404; when the upper mold 300 and the lower mold 200 are fitted together, the nuts 405 are tightened onto the corresponding second screw 404 until the lower end of the nuts 405 fits the pad 401, which can improve the connection stability and avoid loosening during the centrifugal process.

[0050] The second screw 404 has a screw thread in the opposite direction to the corresponding first screw 402 ; by setting the screw threads in opposite directions, the purpose of self-locking can be achieved, and the connection stability can be further improved.

[0051] A pair of rectangular frames 801 are fixed on the base 100 and are located at both ends of the lower mold 200. A vertically placed third screw 802 and a slide bar 803 are rotatably connected in the rectangular frames 801. The third screw 802 and the slide bar 803 are respectively located on both sides of the lower mold 200. A threaded slide bar 804 is sleeved on the third screw 802. The slide bar 803 passes through the slide bar 804 and is slidably connected to it. The upper mold 300 is located between the slide bars 804 on both sides. The slide bars 804 are detachably connected to the corresponding ends of the upper mold 300.

[0052] After the slide bar 804 is connected to the upper mold 300 , the slide bar 804 and the upper mold 300 can be driven to move up and down synchronously by rotating the third screw 802 . When the upper mold 300 and the lower mold 200 are in contact, the slide bar 804 is separated from the upper mold 300 .

[0053] A pair of second telescopic cylinders 805 are fixedly connected to the slide bar 804, and the driving rods at the output ends of the second telescopic cylinders 805 are horizontally facing the upper mold 300. A pair of holes 302 for inserting the driving rods at the output ends of the second telescopic cylinders 805 are opened on the outer walls at both ends of the upper mold 300; by plugging or separating the driving rods at the output ends of the second telescopic cylinders 805 and the holes 302, a detachable connection between the slide bar 804 and the upper mold 300 is realized.

[0054] The lower ends of the second screw rods 404 are fixedly sleeved with gears 806, and an annular synchronous toothed belt 807 is sleeved between the two gears 806. A second rotating motor 808 for driving the second screw rod 404 on the corresponding side is installed on any rectangular frame 801; through the cooperation of the gears 806 and the annular synchronous toothed belt 807, when the second rotating motor 808 is turned on, it can drive the second screw rods 404 on both sides to rotate synchronously.

[0055] The centrifugal assembly includes a pair of differentials 901 fixed to the base 100. The output shafts of the two differentials 901 are placed coaxially with the disc 600. The output shafts of the two differentials 901 are respectively fixed to the two ends of the lower mold 200. A third rotating motor 902 is fixedly installed on the base 100 and is connected to the input shaft of any differential 901; it can easily drive the lower mold 200 to rotate.

[0056] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0057] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present disclosure. Various changes and improvements may be made to the present disclosure without departing from the spirit and scope of the present disclosure, and such changes and improvements shall fall within the scope of the present disclosure.

Claims

1. A centrifugal forming device for a concrete pole, comprising a base (100) and a steel cage, characterized in that: A lower mold (200) and an upper mold (300) are symmetrically arranged above and below the base (100); a connecting assembly for detachably connecting to the upper mold (300) is provided on the lower mold (200); and when the upper mold (300) and the lower mold (200) are fitted together, a sealed cylindrical shell that is horizontally placed and hollow inside is formed; A first telescopic cylinder (700) coaxially arranged therewith is fixed on the inner walls of both ends of the lower mold (200), a disc (600) is fixed on the output end of the first telescopic cylinder (700), the discs (600) are coaxially arranged with the cylindrical shell and slidably connected thereto, a plurality of blind holes (601) uniformly distributed in an annular shape around the central axis of the two discs (600) are formed on the side surfaces close to each other, and the blind holes (601) of the two discs (600) correspond to each other one by one and are coaxially arranged; A steel cage is placed between the two disks (600), and the steel cage includes a plurality of cross bars (501). The number of cross bars (501) corresponds to the number of blind holes (601) on any disk (600). Both ends of any cross bar (501) are respectively inserted into the blind holes (601) of the disks (600) on both sides. The cross bars (501) are fixed by a plurality of stirrups (502) arranged along the axis of the disks (600). A centrifugal assembly is provided on the base (100), which is connected to both ends of the lower mold (200) and is used to drive the lower mold (200) to rotate.

2. The centrifugal forming device for concrete poles according to claim 1, characterized in that: The connecting assembly includes a pair of first screw rods (402) placed vertically upward, the two first screw rods (402) are respectively rotatably connected to the upper end surfaces of the two ends of the lower mold (200), the lower ends of the first screw rods (402) are fixed with coaxially placed rotating shafts, the rotating shafts are rotatably connected to the shell wall of the lower mold (200), the lower ends of the rotating shafts are connected to first rotating motors (403), and the first rotating motors (403) are fixedly installed on the lower end peripheral wall of the lower mold (200); Both ends of the upper mold (300) are provided with threaded holes (301) adapted to the first screw (402).

3. The concrete pole centrifugal forming device according to claim 2, characterized in that: The connecting assembly further comprises a pair of nuts (405), the threaded hole (301) passes through the upper peripheral wall of the upper mold (300), a pad (401) is fixed to the upper peripheral wall of the upper mold (300) near the threaded hole (301), a second screw (404) placed coaxially is fixed to the upper end of the first screw (402), the diameter of the second screw (404) is smaller than the diameter of the first screw (402), an avoidance hole for the second screw (404) to pass through is opened on the pad (401), and the nut (405) corresponds to the second screw (404) one by one and can be threadedly matched with it.

4. The centrifugal forming device for concrete poles according to claim 3, characterized in that: The second screw (404) has a spiral direction opposite to that of the corresponding first screw (402).

5. The centrifugal forming device for concrete poles according to claim 4, characterized in that: A pair of rectangular frames (801) located at both ends of the lower mold (200) are fixed on the base (100), and a third screw (802) and a slide bar (803) placed vertically are rotatably connected in the rectangular frames (801). The third screw (802) and the slide bar (803) are respectively located on both sides of the lower mold (200). A threaded slide bar (804) is sleeved on the third screw (802), and the slide bar (803) passes through the slide bar (804) and is slidably connected to it. The upper mold (300) is located between the slide bars (804) on both sides, and the slide bars (804) are detachably connected to the corresponding ends of the upper mold (300).

6. The centrifugal forming device for concrete poles according to claim 5, characterized in that: A pair of second telescopic cylinders (805) are fixed on the slide bar (804), and the output end driving rods of the second telescopic cylinders (805) are horizontally oriented toward the upper mold (300). A pair of hole grooves (302) for inserting the output end driving rods of the second telescopic cylinders (805) are opened on the outer side walls at both ends of the upper mold (300).

7. The centrifugal forming device for concrete poles according to claim 6, characterized in that: The lower ends of the second screw rods (404) are fixedly sleeved with gears (806), and an annular synchronous toothed belt (807) is sleeved between the two gears (806). A second rotating motor (808) for driving the second screw rod (404) on the corresponding side is installed on any rectangular frame (801).

8. The concrete pole centrifugal forming device according to claim 7, characterized in that: The centrifugal assembly includes a pair of differentials (901) fixed on a base (100), the output shafts of the two differentials (901) are coaxially arranged with the disc (600), and the output shafts of the two differentials (901) are respectively fixed to the two ends of the lower mold (200). A third rotating motor (902) is fixedly mounted on the base (100), and the third rotating motor (902) is connected to the input shaft of any differential (901).

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