Reinforced concrete pipe producing and manufacturing device

Abstract

The invention discloses a reinforced concrete pipe producing and manufacturing device, and belongs to the technical field of cement pipe pouring, the reinforced concrete pipe producing and manufacturing device comprises an outer mold, an inner mold and a bottom mold which are coaxially arranged, the bottom mold is detachably mounted on the lower end face of the outer mold, the inner mold is arranged in the outer mold, the bottom mold is in contact with the outer wall of the inner mold, and the outer wall of the upper end of the outer mold is fixedly connected with a supporting table; an annular spraying assembly is installed on the supporting table, and the spraying assembly is driven to move to the position between the outer mold and the inner mold in the axial direction of the outer mold and spray a release agent on the outer mold and the inner mold. According to the reinforced concrete pipe producing and manufacturing device, the annular spraying assembly is arranged, after the outer mold and the inner mold are assembled, the spraying assembly is driven to move to the position between the outer mold and the inner mold, and a release agent is conveyed into the spraying assembly through an arranged pump; therefore, the release agent can be uniformly sprayed to the inner wall of the outer mold and the outer wall of the inner mold through the spray head, the spraying efficiency is high, and uniform spraying can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of cement pipe casting, and specifically discloses a production and manufacturing device for reinforced concrete pipes. Background Art

[0002] Concrete pipes are pipes made of concrete or reinforced concrete, used for transporting fluids such as water, oil, and gas, and can be divided into four types: plain concrete pipes, ordinary reinforced concrete pipes, self-stressing reinforced concrete pipes, and prestressed concrete pipes; during the production process of concrete pipes, in order to facilitate demoulding after the concrete solidifies, a demoulding agent needs to be sprayed on the inner wall of the outer mould and the outer wall of the inner mould.

[0003] For example, the patent with the publication number CN116728594B, the publication date is October 31, 2023, which discloses a forming device for a cement pipe with a steel reinforcement cage embedded therein, including a pouring base, an outer sleeve mould is arranged at the upper end of the pouring base, a fixing clamp is wrapped on the outer surface of the outer sleeve mould, and the fixing clamp is clamped on the outer wall of the outer sleeve mould through a fixing member. A rotating assembly is installed at the center position on the surface of the pouring base. The rotating assembly includes a motor. A motor is installed on the upper surface of the pouring base. The output end of the motor is connected to a driving disc. A track groove is opened on the upper surface of the driving disc. The bottom end of the outer sleeve mould is embedded in the track groove opened on the upper surface of the driving disc and is slidably connected to the track groove. A shielding cover is arranged near the edge position on the upper surface of the pouring base. A lifting assembly is arranged on the back of the shielding cover. The lifting assembly includes a hydraulic rod. A hydraulic rod is arranged on the back of the shielding cover. The output end of the hydraulic rod is connected to a lifting block. The front end of the lifting block is fixedly connected to a connecting rod, and the end of the connecting rod is connected to a forming assembly.

[0004] For the existing production and manufacturing devices of reinforced concrete pipes including the above patent, by setting the surface of the diversion cover obliquely, the demoulding reagent flows to the surface of the inner mould. This method has low efficiency and cannot ensure that the outer wall of the inner mould is fully coated with the demoulding agent, especially for some large-sized reinforced concrete pipes. Moreover, the inner wall of the outer mould still needs to be manually sprayed with the demoulding agent. Summary of the Invention

[0005] The purpose of the present invention is to provide a production and manufacturing device for reinforced concrete pipes.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A production and manufacturing device for reinforced concrete pipes, including an outer mould, an inner mould, and a bottom mould arranged coaxially. The bottom mould is detachably installed on the lower end surface of the outer mould. The inner mould is arranged inside the outer mould. The bottom mould is in contact with the outer wall of the inner mould. A support platform is fixedly connected to the outer wall at the upper end of the outer mould. An annular spraying assembly is installed on the support platform. The spraying assembly is driven to move axially along the outer mould to the space between the outer mould and the inner mould and spray a demoulding agent on the outer mould and the inner mould.

[0008] As described above, the spraying assembly includes a circular ring, on which a conveying ring pipe is fixedly installed. A number of spray nozzles are arranged in a circumferential array on the conveying ring pipe. The outer diameter of the circular ring is equal to the inner diameter of the outer mold, and the inner diameter of the circular ring is equal to the outer diameter of the inner mold.

[0009] As described above, the cross-section of the circular ring is an isosceles trapezoid.

[0010] As described above, a lifting ring and a moving ring are arranged above the support platform. The support platform and the lifting ring are connected by a number of support rods. The moving ring is arranged between the support platform and the lifting ring. A number of support rods all penetrate through the moving ring. The circular ring is connected to the moving ring through a connecting rod. A driving part for driving the moving ring to move along its own axis is arranged on the support platform.

[0011] As described above, the circular ring includes a first ring, a second ring and a third ring arranged coaxially. The conveying ring pipe is arranged inside the second ring. Flaring grooves are opened at positions corresponding to the spray nozzles on the second ring. The first ring and the third ring are driven to move along their own axes to block or expose the flaring grooves.

[0012] As described above, the first ring and the third ring are connected by a connecting block. The connecting block is arranged corresponding to the connecting rod. A small hole for the connecting rod to pass through is opened on the connecting block.

[0013] As described above, a locking part for limiting the first ring and the third ring is arranged on the second ring.

[0014] As described above, an elastic part for maintaining the relative positions of the first ring and the third ring with respect to the second ring is arranged on the connecting rod. When the elastic part is in a natural state, the first ring and the third ring are higher than the second ring so that the flaring grooves are completely exposed. A stop block is fixedly connected to the support platform, and the stop block is bent above the first ring.

[0015] As described above, the moving ring includes an inner ring and an outer ring that are rotatably connected to each other. The connecting rod is fixedly connected to the inner ring. The upper end of the support rod penetrates through the outer ring and is connected to the lifting ring. A driving mechanism for driving the inner ring to rotate is arranged on the outer ring.

[0016] As described above, the driving mechanism includes a hydraulic rod arranged on the outer ring. The hydraulic rod is rotatably connected to the outer ring, and the output end of the hydraulic rod is rotatably connected to the inner ring.

[0017] In the above technical solution, for the reinforced concrete pipe production and manufacturing device provided by the present invention, by arranging a ring-shaped spraying assembly, after the outer mold and the inner mold are assembled, the spraying assembly is driven to move between the outer mold and the inner mold, and a release agent is conveyed into the spraying assembly through a provided pump. The release agent can be evenly sprayed onto the inner wall of the outer mold and the outer wall of the inner mold through the spray nozzles, with high spraying efficiency and uniform spraying achievable. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic structural diagram of the manufacturing device provided by the embodiment of the present invention;

[0020] Figure 2 Front view of the manufacturing device provided by the embodiment of the present invention;

[0021] Figure 3 Cross-sectional view of the assembled state of the outer mold, inner mold, and bottom mold provided by the embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the connection state between the ring and the moving ring provided by the embodiment of the present invention;

[0023] Figure 5 Cross-sectional view of the ring provided by the embodiment of the present invention;

[0024] Figure 6 Provided by the embodiment of the present invention Figure 5 Enlarged schematic view at position A in

[0025] Explanation of reference numerals:

[0026] 1. Outer mold; 11. Support platform; 111. Motor; 112. Lead screw; 113. Stopper; 12. Lifting ring; 13. Support rod; 2. Inner mold; 3. Bottom mold; 4. Spraying assembly; 41. Ring; 411. First ring; 4111. Insertion hole; 412. Second ring; 4121. Flared groove; 413. Third ring; 414. Connecting block; 42. Delivery ring pipe; 421. Nozzle; 5. Moving ring; 51. Inner ring; 52. Outer ring; 53. Hydraulic rod; 6. Connecting rod; 61. Disc; 62. Second spring; 7. Locking member; 71. Insertion pin; 72. First spring; 73. Pulling rope. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will further introduce the present invention in detail in conjunction with the drawings.

[0028] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] As Figures 1 - 6 shown, a production and manufacturing device for reinforced concrete pipes provided by an embodiment of the present invention includes an outer mold 1, an inner mold 2, and a bottom mold 3 that are coaxially arranged. The bottom mold 3 is detachably installed on the lower end surface of the outer mold 1. The inner mold 2 is arranged inside the outer mold 1. The bottom mold 3 is in contact with the outer wall of the inner mold 2. A support platform 11 is fixedly connected to the outer wall of the upper end of the outer mold 1. A spraying assembly 4 in a ring shape is installed on the support platform 11. The spraying assembly 4 is driven to move axially along the outer mold 1 to between the outer mold 1 and the inner mold 2 and spray a release agent on the outer mold 1 and the inner mold 2.

[0030] Specifically, the main structure of the manufacturing device includes an outer mold 1, an inner mold 2, and a bottom mold 3. As Figure 1 and Figure 3 shown, both the outer mold 1 and the inner mold 2 are in a cylindrical shape, and the bottom mold 3 is in a ring shape 41. Among them, the outer mold 1 is sleeved outside the inner mold 2. The bottom mold 3 is detachably installed on the lower end surface of the outer mold 1, and the upper surface of the bottom mold 3 fits the lower end surface of the outer mold 1. The bottom mold 3 can be fixed to the lower end surface of the outer mold 1 by bolts. This is the prior art and will not be elaborated. Different from the prior art, a support platform 11 is fixedly connected to the outer wall of the upper end of the outer mold 1, and a spraying assembly 4 is installed on the support platform 11. Optionally, the spraying assembly 4 includes an annular pipe. Spray heads 421 are provided at positions corresponding to the outer mold 1 and the inner mold 2. The spray heads 421 are arranged in a circumferential array centered on the central axis of the annular pipe. That is, there are two circles of spray heads 421 on the annular pipe. One circle of spray heads 421 corresponds to the inner wall of the outer mold 1, and the other circle of spray heads 421 corresponds to the outer wall of the inner mold 2. In addition, the annular pipe is connected to a pump for sucking the release agent through a hose.

[0031] During the actual production process, holes are provided at the casting site for placing the outer mold 1, the inner mold 2, and the bottom mold 3. The inner mold 2 is arranged in the holes, and hydraulic cylinders for driving the inner mold 2 to rise or fall along its own axis are provided in the holes. Before casting, the outer mold 1 is lifted by a gantry crane or other lifting device and placed in the holes, keeping the central axes of the outer mold 1 and the inner mold 2 coincident. When the outer mold 1 is completely placed in the holes, the above-mentioned support platform 11 contacts the ground, thus avoiding high-altitude operations for workers; when it is necessary to spray the mold release agent, the annular pipe is driven to move along the axis direction of the outer mold 1 to the space between the outer mold 1 and the inner mold 2, and the mold release agent is conveyed into the annular pipe through a pump. The mold release agent is evenly sprayed onto the inner wall of the outer mold 1 and the outer wall of the inner mold 2 through the nozzles 421 provided on the annular pipe.

[0032] The reinforced concrete pipe production and manufacturing device proposed by the present invention, by providing an annular spraying assembly 4, after the assembly of the outer mold 1 and the inner mold 2 is completed, the spraying assembly 4 is driven to move between the outer mold 1 and the inner mold 2, and the mold release agent is conveyed into the spraying assembly 4 through a pump provided. The mold release agent can be evenly sprayed onto the inner wall of the outer mold 1 and the outer wall of the inner mold 2 through the nozzles 421, with high spraying efficiency and uniform spraying achievable.

[0033] Furthermore, the spraying assembly 4 includes a circular ring 41, a conveying ring pipe 42 is fixedly installed on the circular ring 41, a number of nozzles 421 are arranged in a circumferential array on the conveying ring pipe 42, the outer diameter of the circular ring 41 is equal to the inner diameter of the outer mold 1, and the inner diameter of the circular ring 41 is equal to the outer diameter of the inner mold 2.

[0034] Specifically, after each use of the inner mold 2 and the outer mold 1, a layer of mortar will adhere to their surfaces, and even cement blocks may remain due to incomplete demolding. The adhesion of mortar or cement blocks will form an uneven surface on the inner mold 2 and the outer mold 1, affecting the adhesion effect of the mold release agent, resulting in the mold release agent not being able to evenly cover the mold surface. The uneven mold release agent layer may lead to poor demolding effect in some areas, increasing the risk of damage to the product during demolding, and at the same time reducing the quality of the subsequent produced reinforced concrete pipes (referred to as pipes); in this embodiment, the spraying assembly 4 includes a circular ring 41, a conveying ring pipe 42 is fixedly installed on the circular ring 41, and the conveying ring pipe 42 is the above-mentioned annular pipe. The conveying ring pipe 42 is coaxially arranged with the circular ring 41, and a number of nozzles 421 are installed on the conveying ring pipe 42. Similarly, the installation method of the nozzles 421 on the conveying ring pipe 42 is the same as the installation method on the annular pipe in the above embodiment; the outer diameter of the circular ring 41 is equal to the inner diameter of the outer mold 1, and the inner diameter of the circular ring 41 is equal to the outer diameter of the inner mold 2. In this way, when the circular ring 41 is driven to move between the outer mold 1 and the inner mold 2, it can contact the inner wall of the outer mold 1 and the outer wall of the inner mold 2, and scrape off the mortar or cement blocks remaining on the inner wall of the outer mold 1 and the outer wall of the inner mold 2.

[0035] During the production process of the pipeline, after the pouring of the pipeline is completed, the above-mentioned hydraulic cylinder drives the inner mold 2 to move towards the bottom of the hole, so that the inner mold 2 is separated from the inner wall of the pipeline, realizing the demolding of the inner mold 2. Then, a gantry crane is used to lift the outer mold 1, the bottom mold 3 and the formed pipeline and move them to the placement position of the pipeline. At the same time, the hydraulic cylinder drives the inner mold 2 to reset. At this time, the bottom mold 3 contacts the ground and supports the outer mold 1 and the pipeline. After disconnecting the connection between the bottom mold 3 and the outer mold 1, the outer mold 1 is lifted upward by the gantry crane, and the pipeline will be retained on the bottom mold 3, realizing the demolding of the outer mold 1; during the process of lifting the outer mold 1 upward, the ring 41 is driven to move downward along the axial direction of the outer mold 1, so as to scrape off the mortar or cement blocks remaining on the inner wall of the outer mold 1; the pipeline is divided into plain-end pipes, socket pipes or tongue-and-groove pipes according to its joint form. When the poured pipeline is a plain-end pipe or a socket pipe, since the end face of the pipeline away from the bottom mold 3 is a plane, the ring 41 can be made to contact the upper end face of the pipeline, and the descending speed of the ring 41 is made the same as the ascending speed of the outer mold 1, and the upper end face of the pipeline is pressed by the ring 41, so as to avoid the upper end face of the pipeline being incomplete. That is, the ring 41 can not only clean the inner wall of the outer mold 1, but also be used to assist in separating the pipeline from the outer mold 1.

[0036] After the outer mold 1 is demolded, it is hoisted onto another bottom mold 3. After completing the connection between the bottom mold 3 and the outer mold 1, the outer mold 1 and the bottom mold 3 are hoisted together, and both the outer mold 1 and the bottom mold 3 are sleeved outside the inner mold 2. During this process, the ring 41 remains at the lower part of the outer mold 1. When the ring 41 contacts the outer wall of the inner mold 2, it can scrape off the mortar or cement blocks on the outer wall of the inner mold 2. When the outer mold 1 is installed in place, the ring 41 is driven to move upward above the outer mold 1 and the inner mold 2. During this process, the conveying ring pipe 42 sprays the release agent evenly on the inner wall of the outer mold 1 and the outer wall of the inner mold 2 through the nozzles 421. Finally, the steel reinforcement cage is placed and concrete is poured.

[0037] Preferably, the cross-section of the ring 41 is an isosceles trapezoid.

[0038] Specifically, as Figure 5 shown, in order to reduce the resistance of the ring 41 to move between the outer mold 1 and the inner mold 2, the cross-section of the ring 41 can be set as an isosceles trapezoid. When the ring 41 is driven to move between the outer mold 1 and the inner mold 2, the two acute angles of the isosceles trapezoid are in contact with the outer mold 1 and the inner mold 2 respectively, so that the contact between the ring 41 and the outer mold 1 and the inner mold 2 is a line contact, thereby reducing the moving resistance of the ring 41.

[0039] Furthermore, a lifting ring 12 and a moving ring 5 are provided above the support platform 11, the support platform 11 and the lifting ring 12 are connected by a plurality of support rods 13, the moving ring 5 is provided between the support platform 11 and the lifting ring 12, the plurality of support rods 13 are all provided through the moving ring 5, the circular ring 41 is connected to the moving ring 5 by a connecting rod 6, and a driving part for driving the moving ring 5 to move along its own axial direction is provided on the support platform 11.

[0040] Specifically, in order to facilitate the installation of the ring 41, a lifting ring 12 and a moving ring 5 are arranged above the support platform 11. Both the lifting ring 12 and the moving ring 5 are arranged coaxially with the outer mold 1. A plurality of support rods 13 are fixedly connected to the support platform 11. Each support rod 13 is arranged along the axial direction of the outer mold 1, and one end of each support rod 13 away from the support platform 11, that is, the upper end, is fixedly connected to the lifting ring 12. A plurality of lifting ears are fixedly connected to the upper end surface of the lifting ring 12, so as to facilitate the lifting of the outer mold 1 and other structures by the gantry crane; the moving ring 5 is arranged The movable ring 5 is placed between the support platform 11 and the lifting ring 12. The positions corresponding to the support rods 13 are provided with circular holes. The support rods 13 pass through the corresponding circular holes, so that the movable ring 5 can be driven to move along the axial direction of the support rods 13. The circular ring 41 is arranged directly below the movable ring 5. A plurality of connecting rods 6 are arranged between the movable ring 5 and the circular ring 41. The upper ends of the connecting rods 6 are connected to the lower end surface of the movable ring 5, and the lower ends of the connecting rods 6 are fixedly connected to the circular ring 41. Preferably, the connecting rods 6 are circular. The central axis of the ring 41 is arranged in a central circumferential array to ensure that the ring 41 can be firmly installed; in addition, a driving unit is arranged on the support platform 11, and the driving unit is used to drive the movable ring 5 to move along its own axial direction, that is, the movable ring 5 can move along the axial direction of the outer mold 1. Optionally, the driving unit includes a motor 111 fixed to the support platform 11, and a screw rod 112 is arranged between the lifting ring 12 and the support platform 11. The two ends of the screw rod 112 are respectively rotatably connected with the lifting ring 12 and the support platform 11, and the screw rod 112 passes through the movable ring 5 and is threadedly connected with the movable ring 5. A reducer is arranged on the bearing platform, and the output shaft of the motor 111 is connected with the input shaft of the reducer, and the output shaft of the reducer is connected to the screw rod 112 through a bevel gear set (not shown in the figure); because the movable ring 5 is limited by the support rod 13 and can only move along the length direction of the support rod 13, when the motor 111 drives the screw rod 112 to rotate, the movable ring 5 is driven to slide along the length direction of the support rod 13, thereby driving the ring 41 to rise or fall.

[0041] In another embodiment of the present invention, the circular ring 41 includes a first ring 411, a second ring 412 and a third ring 413 which are coaxially arranged. The conveying ring tube 42 is arranged inside the second ring 412. The second ring 412 is provided with a flaring groove 4121 at a position corresponding to the nozzle 421. The first ring 411 and the third ring 413 are driven to move along their own axial direction to cover or expose the flaring groove 4121.

[0042] Specifically, in the above embodiment, the conveying ring pipe 42 is installed on the circular ring 41. To expand the spraying range formed by the spray nozzles 421 as much as possible, the spray nozzles 421 need to be at a certain distance from the inner wall of the outer mold 1 (the outer wall of the inner mold 2). However, such a setting results in spraying dead corners when the spray nozzles 421 are installed on the upper end face of the circular ring 41. The end of the outer mold 1 and the inner mold 2 close to the bottom mold 3 cannot be sprayed with the release agent due to the blockage of the circular ring 41. And when the spray nozzles 421 are arranged on the lower end face of the circular ring 41, the circular ring 41 cannot move to the lowermost end of the outer mold 1, that is, the inner wall of the outer mold 1 and the outer wall of the inner mold 2 cannot be comprehensively cleaned, resulting in cleaning dead corners. In this embodiment, the circular ring 41 includes a first ring 411, a second ring 412, and a third ring 413, which are coaxially arranged. The inner diameter of the first ring 411 is equal to the outer diameter of the second ring 412, and the inner diameter of the second ring 412 is equal to the outer diameter of the third ring 413. The above-mentioned conveying ring pipe 42 is arranged inside the second ring 412. As shown in the figure, an expansion slot 4121 for installing the spray nozzles 421 is opened on the second ring 412, and the expansion slot 4121 is in a flared shape, so as to ensure that the spray nozzles 421 can form a large enough spray. During actual production, a driving member is arranged on the second ring 412, and the driving member can drive the first ring 411 and the third ring 413 to move along their own axial directions, so that the expansion slot 4121 is exposed to facilitate the spraying of the release agent. The driving member can adopt an existing electric push rod.

[0043] In this embodiment, the circular ring 41 is divided into a first ring 411, a second ring 412, and a third ring 413 that are coaxially arranged. The conveying ring pipe 42 is arranged inside the second ring 412, and the spray nozzles 421 are installed in the expansion slot 4121 opened on the second ring 412. With such a setting, the first ring 411 and the third ring 413 have a first position and a second position relative to the second ring 412:

[0044] When in the first position, the lower end faces of the first ring 411, the second ring 412, and the third ring 413 are on the same horizontal plane. At this time, the first ring 411 and the third ring 413 completely block the expansion slot 4121 on the second ring 412. In this state, when the circular ring 41 is driven to move axially along the outer mold 1 and the inner mold 2, the first ring 411 can scrape the mortar on the inner wall of the outer mold 1, and the third ring 413 can scrape the mortar on the outer wall of the inner mold 2. At the same time, the first ring 411 and the third ring 413 can block their corresponding expansion slots 4121, so as to prevent the mortar from contacting the spray nozzles 421 and affecting the formation of the spray.

[0045] When in the second position, both the first ring 411 and the second ring 412 are disposed higher than the third ring 413. In this state, the flaring groove 4121 on the second ring 412 is not blocked. When the circular ring 41 is driven to move along the axial direction of the outer mold 1, the release agent can be evenly sprayed on the inner wall of the outer mold 1 and the outer wall of the inner mold 2 through the nozzle 421.

[0046] Furthermore, the first ring 411 and the third ring 413 are connected by a connecting block 414. The connecting block 414 is correspondingly arranged with the connecting rod 6, and a small hole for the connecting rod 6 to pass through is formed on the connecting block 414.

[0047] Specifically, as shown in the figure, the first ring 411 and the third ring 413 are connected into a whole by a connecting pipe. The connecting blocks 414 are arranged in one-to-one correspondence with the connecting rods 6, and small holes for the connecting rods 6 to pass through are formed on the connecting blocks 414. With such an arrangement, the number of the above-mentioned driving parts can be reduced, and the synchronous adjustment of the first ring 411 and the third ring 413 can be facilitated.

[0048] In yet another embodiment proposed by the present invention, a locking member 7 for limiting the first ring 411 and the third ring 413 is provided on the second ring 412.

[0049] Specifically, in the above embodiment, the first ring 411 and the third ring 413 are driven by a driving part provided on the second ring 412 to move relative to the second ring 412, so as to realize the adjustment of the first ring 411 and the third ring 413 between the above-mentioned first position and the second position. Since the first ring 411 and the third ring 413 in the first position need to adjust the inner wall of the outer mold 1 and the outer wall of the inner mold 2, certain resistance will be generated when the first ring 411 contacts the outer mold 1 and the second ring 412 contacts the inner mold 2. Completely relying on the self-locking of the driving part to ensure that the lower end surfaces of the first ring 411, the second ring 412 and the third ring 413 are on the same horizontal plane causes relatively large damage to the driving part. In this embodiment, a locking member 7 is provided on the second ring 412. When the first ring 411 and the third ring 413 are in the above-mentioned first position, the locking member 7 locks the first ring 411 and the third ring 413 on the second ring 412 to reduce the force on the driving part, so that the lower end surfaces of the first ring 411, the second ring 412 and the third ring 413 are always on the same horizontal plane, thereby ensuring that the displacement amounts of the first ring 411 and the third ring 413 are the same as that of the second ring 412, so as to facilitate the thorough cleaning of the outer mold 1 and the inner mold 2, and thus avoid the situation that the displacement amounts of the first ring 411 and the third ring 413 are different from that of the second ring 412, resulting in the lower part of the inner wall of the outer mold 1 and the lower part of the outer wall of the inner mold 2 not being cleaned.

[0050] Further, the locking member 7 includes a plug pin 71 disposed in the second ring 412. A first spring 72 is disposed in the second ring 412. The first spring 72 is used to maintain the relative position between the plug pin 71 and the second ring 412. A plug hole 4111 adapted to the plug pin 71 is formed in the first ring 411 or the third ring 413. One end of the plug pin 71 corresponding to the plug hole 4111 has a guiding inclined surface. A pulling rope 73 is fixed on the plug pin 71. The end of the pulling rope 73 away from the plug pin 71 is fixed to the lifting ring 12.

[0051] Specifically, for facilitating the locking of the first ring 411 and the third ring 413, in this embodiment, a plug pin 71 and a first spring 72 are disposed in the second ring 412. A square hole for cooperating with the plug pin 71 is formed in the second ring 412. One end of the plug pin 71 contacts the first spring 72, and the other end of the plug pin 71 extends radially to the outside (or inside) of the second ring 412. A plug hole 4111 for cooperating with the plug pin 71 is formed in the first ring 411 or the third ring 413. As Figure 6 shown, the figure shows that the plug hole 4111 is formed in the first ring 411. One end of the plug pin 71 corresponding to the plug hole 4111, that is, the end of the plug pin 71 away from the first spring 72, is provided with a guiding inclined surface, and the guiding inclined surface inclines upward. When the first spring 72 is in a natural state, the plug pin 71 extends outwards from the square hole, and the guiding inclined surface of the plug pin 71 extends into the plug hole 4111 on the first ring 411. To enable the entire ring 41 to move smoothly to the bottom of the outer mold 1 to release the locking of the first ring 411 and the third ring 413, a pulling rope 73 is fixedly connected to the end of the plug pin 71 in the square hole. The pulling rope 73 extends into the corresponding connecting rod 6, and the end of the pulling rope 73 away from the plug pin 71 penetrates through the moving ring 5 and is fixedly connected to the lifting ring 12 (not shown in the figure). With such a setting, when the entire ring 41 is driven to move to the bottom of the outer mold 1, that is, when the inner wall of the outer mold 1 is cleaned, the pulling rope 73 just pulls the plug pin 71 into the second ring 412, that is, when the ring 41 moves to the bottom of the outer mold 1 at this time, the locking of the first ring 411 and the third ring 413 is released. At this time, the first ring 411 and the third ring 413 are driven by the driving member to move upwards, so that the flaring groove 4121 on the second ring 412 is exposed.

[0052] Furthermore, an elastic member for maintaining the relative position between the first ring 411 and the third ring 413 and the second ring 412 is disposed on the connecting rod 6. When the elastic member is in a natural state, the first ring 411 and the third ring 413 are higher than the second ring 412 so that the flaring groove 4121 is completely exposed. A stopper 113 is fixedly connected to the support platform 11, and the stopper 113 is bent above the first ring 411.

[0053] Specifically, in the above embodiment, the driving member is used to drive the first ring 411 and the third ring 413 to move relative to the second ring 412, so that the flaring groove 4121 is exposed, facilitating the spraying of the release agent by the spray head 421 onto the inner wall of the outer mold 1 and the outer wall of the inner mold 2. However, due to the limitation of the wall thickness of the cast pipe, the width of the gap between the outer mold 1 and the inner mold 2 is limited, which is not convenient for the arrangement of the driving member. In this embodiment, a second spring 62 is sleeved on the lower end of each connecting rod 6, and the lower end of the second spring 62 is fixedly connected to the above-mentioned connecting block 414. A disc 61 is fixedly connected to the position corresponding to the upper end of the second spring 62 on each connecting rod 6, and the upper end of the second spring 62 is fixedly connected to the corresponding disc 61, so as to limit the position of the upper end of the second spring 62. With such a setting, when the ring 41 is driven to move to the lower part of the outer mold 1, the pull rope 73 pulls the plug pin 71 to move into the square hole, releasing the locking of the first ring 411. The first ring 411 and the third ring 413 move upward under the pulling of the second spring 62, so that the flaring groove 4121 on the second ring 412 is exposed, facilitating the spray head 421 to spray the release agent onto the inner wall of the outer mold 1 and the outer wall of the inner mold 2. When the ring 41 is driven to move upward above the outer mold 1, after the first ring 411 contacts the stop block 113, it is blocked by the stop block 113 and cannot continue to move, while the second ring 412 continues to move upward. At this time, although the plug pin 71 extends out of the square hole, when the first ring 411 contacts the guiding inclined surface of the plug pin 71, it can squeeze the plug pin 71 into the square hole until the first ring 411 and the third ring 413 are adjusted from the above-mentioned second position to the first position, and the plug pin 71 is aligned with the plug hole 4111. The plug pin 71 will extend into the plug hole 4111 under the elastic force of the first spring 72, and lock the first ring 411 and the third ring 413 in the above-mentioned first position again.

[0054] In this embodiment, through the pulling of the second spring 62 on the first ring 411 and the third ring 413, after the locking of the first ring 411 is released, the arranged second spring 62 can pull the first ring 411 and the third ring 413 to move from the above-mentioned first position to the second position. During the process of the ring 41 being driven to move upward above the outer mold 1, the stop block 113 arranged to block the first ring 411 causes relative movement between the first ring 411 and the second ring 412, and passively adjusts the first ring 411 and the third ring 413 from the second position to the first position.

[0055] Furthermore, two groups of plug holes 4111 are provided on the first ring 411 corresponding to the plug pin 71. When the first ring 411 and the third ring 413 are in the first position and the second position, one group of plug holes 4111 corresponds to the plug pin 71 respectively.

[0056] Specifically, in the above embodiment, when the first ring 411 and the third ring 413 are only at the first position, the insertion pin 71 can lock the first ring 411. When the entire circular ring 41 is driven to move upward from the bottom of the outer mold 1, the spray head 421 sprays the release agent onto the inner wall of the outer mold 1 and the outside of the inner mold 2. At this time, since the first ring 411 still contacts the inner wall of the outer mold 1 and the third ring 413 still contacts the outer wall of the inner mold 2, the first ring 411 is subject to the frictional resistance from the outer mold 1, and the third ring 413 is subject to the frictional resistance from the inner mold 2. The first ring 411 and the third ring 413 only rely on the pulling force of the second spring 62 to maintain the second position. Thus, when the circular ring 41 moves upward from the bottom of the outer mold 1, the first ring 411 and the third ring 413 are likely to move from the second position to the first position due to the frictional resistance, which will block the flaring groove 4121 and affect the spraying of the release agent. In this embodiment, two sets of insertion holes 4111 are provided on the first ring 411 corresponding to the same set of insertion pins 71. When the first ring 411 and the third ring 413 are at the first position and the second position, one set of insertion holes 4111 corresponds to the insertion pins 71. When the circular ring 41 is driven to move upward from the bottom inside the outer mold 1, when the stretching is no longer taut, the insertion pin 71 will be inserted into the corresponding insertion hole 4111 under the push of the first spring 72, so that the first ring 411 and the third ring 413 can also be locked at the second position, thus avoiding the flaring groove 4121 being blocked by the first ring 411 or the third ring 413 during the spraying of the release agent.

[0057] In yet another embodiment proposed by the present invention, the moving ring 5 includes an inner ring 51 and an outer ring 52 that are rotatably connected to each other. The connecting rod 6 is fixedly connected to the inner ring 51. The upper end of the support rod 13 penetrates through the outer ring 52 and is connected to the lifting ring 12. A driving mechanism for driving the inner ring 51 to rotate is provided on the outer ring 52.

[0058] Further, the driving mechanism includes a hydraulic rod 53 provided on the outer ring 52. The hydraulic rod 53 is rotatably connected to the outer ring 52, and the output end of the hydraulic rod 53 is rotatably connected to the inner ring 51.

[0059] Specifically, in the actual production process, to ensure the quality of the pipeline, it is necessary to compact and finish the upper end of the pipeline. In this embodiment, the moving ring 5 includes an inner ring 51 and an outer ring 52 that are rotatably connected to each other. Among them, the upper end of the connecting rod 6 is fixedly connected to the inner ring 51, and the upper end of the support rod 13 passes through the outer ring 52 and is connected to the lifting ring 12. A hydraulic rod 53 is rotatably installed on the outer ring 52, and the output end of the hydraulic rod 53 is rotatably connected to the inner ring 51. With such a setting, when the hydraulic rod 53 extends, it can drive the inner ring 51 to swing within a moving angle around its neutral axis. In the actual production process, after adjusting the first ring 411 and the third ring 413 from the second state to the first state, the motor 111 is used to drive the moving ring 5 to move downward, adjust the position of the circular ring 41, so that the circular ring 41 contacts the upper end surface of the poured pipeline, and in cooperation with the swing of the inner ring 51 driven by the hydraulic rod 53, the upper end surface of the pipeline is compacted and finished by the lower end surfaces of the first ring 411, the second ring 412, and the third ring 413.

[0060] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A reinforced concrete pipe production device, comprising an outer mold, an inner mold and a bottom mold arranged coaxially, wherein the bottom mold is detachably mounted on the lower end surface of the outer mold, the inner mold is arranged inside the outer mold, and the bottom mold contacts the outer wall of the inner mold, characterized in that: The upper outer wall of the outer mold is fixedly connected with a support platform, on which a ring-shaped spraying assembly is installed. The spraying assembly is driven to move along the axial direction of the outer mold to between the outer mold and the inner mold and spray a release agent on the outer mold and the inner mold.

2. A reinforced concrete pipe production and manufacturing device according to claim 1, characterized in that: The spraying assembly comprises a circular ring, on which a conveying ring tube is fixedly mounted, and on which a plurality of nozzles are arranged in a circumferential array, wherein the outer diameter of the circular ring is equal to the inner diameter of the outer mold, and the inner diameter of the circular ring is equal to the outer diameter of the inner mold.

3. A reinforced concrete pipe production and manufacturing device according to claim 2, characterized in that: The cross section of the ring is an isosceles trapezoid.

4. A reinforced concrete pipe production and manufacturing device according to claim 2, characterized in that: A lifting ring and a moving ring are arranged above the support platform, the support platform and the lifting ring are connected by a number of support rods, the moving ring is arranged between the support platform and the lifting ring, the number of support rods all penetrate the moving ring, the circular ring is connected to the moving ring by a connecting rod, and a driving part for driving the moving ring to move along its own axial direction is arranged on the support platform.

5. A reinforced concrete pipe production and manufacturing device according to claim 4, characterized in that: The circular ring includes a first ring, a second ring and a third ring which are coaxially arranged. The conveying ring tube is arranged inside the second ring. The positions of the second ring corresponding to the nozzles are provided with expanding grooves. The first ring and the third ring are driven to move along their own axes to cover or expose the expanding grooves.

6. A reinforced concrete pipe production and manufacturing device according to claim 5, characterized in that: The first ring and the third ring are connected through a connecting block. The connecting block is arranged corresponding to the connecting rod. A small hole for the connecting rod to pass through is opened on the connecting block.

7. A reinforced concrete pipe production and manufacturing device according to claim 5 or 6, characterized in that: The second ring is provided with a locking piece for limiting the first ring and the third ring.

8. A reinforced concrete pipe production device according to claim 6, characterized in that: An elastic member is provided on the connecting rod for maintaining the relative positions of the first ring and the third ring with the second ring. When the elastic member is in a natural state, the first ring and the third ring are higher than the second ring so that the expansion groove is completely exposed. A stopper is fixed on the support platform, and the stopper is bent to the top of the first ring.

9. A reinforced concrete pipe production and manufacturing device according to claim 4, characterized in that: The movable ring comprises an inner ring and an outer ring which are rotatably connected to each other, a connecting rod is fixedly connected to the inner ring, an upper end of the supporting rod passes through the outer ring and is connected to the lifting ring, and a driving mechanism for driving the inner ring to rotate is arranged on the outer ring.

10. A reinforced concrete pipe production and manufacturing device according to claim 9, characterized in that: The driving mechanism comprises a hydraulic rod arranged on the outer ring, the hydraulic rod is rotationally connected to the outer ring, and the output end of the hydraulic rod is rotationally connected to the inner ring.

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