Quick locking structure of concrete pole concrete forming mold

Abstract

The invention relates to the technical field of concrete processing. The quick locking structure of the concrete pole concrete forming mold comprises a steel mold composed of an upper mold shell and a lower mold shell. The edges of the two sides of the upper mold shell and the lower mold shell are provided with connecting edges for mutual buckling, the locking mechanism comprises a rod hole which is used for allowing a locking insertion rod to be inserted and extends in the length direction of the steel mold, the locking insertion rod is inserted into the rod hole from the end of the steel mold, and the upper mold shell and the lower mold shell are locked through the locking mechanism. According to the steel mold, the upper mold shell and the lower mold shell of the steel mold can be quickly locked and unlocked by inserting the locking insertion rods into and pulling out the locking insertion rods from the rod holes, and a good foundation is laid for automatic transformation and upgrading of modern cement pole factories.

Description

Technical Field

[0001] The invention relates to the technical field of concrete processing, and in particular to a quick locking structure of a cement pole concrete forming mould. Background Art

[0002] A cement pole, also known as a concrete pole, is a pole-like structure used to support insulators, hardware, and other electrical components, enabling grid wiring. It is typically constructed from a steel cage and cement poured over it, offering advantages such as durability, corrosion resistance, and low cost. During the cement pole manufacturing process, the steel cage is first fabricated using a roll welder. The cage is then placed within a hollow cylindrical steel mold consisting of an upper and lower formwork. The cage is positioned to ensure that the sealing plates at each end of the cage are positioned within the grooves and the main body of the cage is positioned within the steel mold. Concrete is then poured. This process can involve either closing the molds first and then pouring using a pump pipe inserted through an opening at the end of the formwork, or pouring concrete first and then closing the upper and lower formwork. Once completed, the steel mold is transferred to a centrifugal distribution machine, where it is centrifuged to compact and evenly distribute the concrete into a hollow tubular structure. Subsequently, steam curing and drying steps complete the production process.

[0003] However, in the actual production process of cement poles, we found that there are still some defects that need to be solved:

[0004] 1. The upper and lower mold shells of traditional steel molds are connected by bolts. Due to the long length of steel molds, a large number of bolts are required. Currently, bolt installation mainly relies on manual labor (or only with the assistance of a pistol drill). This method requires a lot of manual labor and increases the difficulty. More importantly, the need for manual intervention in bolt installation is not conducive to fully automated production on industrial production lines. Even if automated operation is achieved through the deployment of multi-axis industrial robots or manipulators, the numerous connection points require a large number of robots and manipulators (typically 2-4), resulting in extremely high equipment costs. Therefore, existing technologies have difficulty in achieving true automated production and do not meet the production needs of modern enterprises.

[0005] 2. When the steel mold is first placed in the steam room for high-temperature steam curing, the temperature of the steel mold and the concrete inside is still relatively low. To avoid the problem of large differences in shrinkage between the surface and center of the concrete due to uneven heating, the existing technology requires a certain amount of steam preheating. After the temperature of the concrete and steel mold has reached a certain level and is uniform, the steam output power is increased and high-temperature steam curing is performed. This reduces the efficiency of steam curing and affects overall production efficiency. Theoretically, if the steel mold and the concrete inside can be preheated in a certain manner during the centrifugal distribution stage (especially in the middle and late stages of centrifugal distribution), it can not only effectively improve the structural stability of the concrete after being formed in the steel mold, but also reduce the preheating period during the steam curing stage, which has positive significance for improving the overall production efficiency of cement poles. However, relevant technologies have not yet been reported. Summary of the Invention

[0006] The object of the present invention is to provide a quick locking structure of a cement pole concrete forming mould which can achieve quick locking and is convenient for automated line connection transformation.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a quick locking structure of a cement pole concrete forming mold, comprising a steel mold consisting of an upper mold shell and a lower mold shell;

[0008] The edges on both sides of the upper mold shell and the lower mold shell are provided with connecting edges for interlocking with each other, and the connecting edges are provided with a locking mechanism and a locking rod for cooperating with the locking mechanism. The locking mechanism includes a rod hole extending along the length direction of the steel mold for inserting the locking rod. The locking rod is inserted into the rod hole from the end of the steel mold, and the upper mold shell and the lower mold shell are locked by the locking mechanism; the locking rod is pulled out, and the upper mold shell and the lower mold shell are unlocked by the locking mechanism.

[0009] Preferably, the locking mechanism includes multiple groups of connecting ears and ear grooves distributed along the length direction of the connecting edge of the steel mold, and respectively arranged on the connecting edges of the upper mold shell and the lower mold shell, and the connecting ears are provided with through holes that cooperate with the locking rods; the rod holes are provided on the connecting edges and are interconnected with the ear grooves; the connecting ears are inserted into the ear grooves, and the locking rods pass through the through holes on the connecting ears to form locks for the upper mold shell and the lower mold shell.

[0010] Preferably, the locking mechanism includes a plurality of locking claws arranged on the connecting edge, the middle section of the locking claw is hinged to the hinge seat on the connecting edge, the outer end of the locking claw is a hook end, and the inner end is a driving end; the connecting edges of the upper mold shell and the lower mold shell on one side of the hinge seat are also correspondingly provided with a first vertical hole and a second vertical hole, and a rod hole is provided on the connecting edge away from the hinge seat, and the rod hole is connected with the second vertical hole; a driving rod that can slide vertically is also provided in the first vertical hole and the second vertical hole, one end of the driving rod is connected to the driving end of the locking claw, and the other end extends into the rod hole; when the locking rod is inserted into the rod hole, it can lift the driving rod and use the driving rod to drive the locking claw to swing around the hinge seat, so as to press the connecting edge of the upper mold shell and the lower mold shell through the hook end of the locking claw.

[0011] Preferably, a guide cap is provided at one end of the first vertical hole facing the locking claw, and the end of the guide cap is inserted into the first vertical hole and forms a threaded fit with the first vertical hole; the driving rod passes through the guide cap and forms a sliding fit with the guide cap; the end of the driving rod located in the first vertical hole is provided with a reducing disk that cooperates with the first vertical hole, and a return spring is provided on the outer sleeve of the driving rod between the reducing disk and the guide cap, with both ends respectively fixedly connected to the reducing disk and the guide cap.

[0012] Preferably, one end of the driving rod located in the rod hole is hemispherical, the rod hole is a round hole, and the locking rod is a round rod with a hemispherical end that matches the rod hole.

[0013] Preferably, one end of the driving rod located in the rod hole is hemispherical, the rod hole is a square hole, and the locking rod is a square rod that matches the rod hole; the top surface of the locking rod is provided with a pushing groove extending along the length direction of the locking rod, the bottom of the pushing groove is arc-shaped, and the depth of the pushing groove gradually becomes shallower from the front end to the rear end of the locking rod; when the reset spring is in a natural state, the length of the driving rod corresponding to each locking claw extending out of the rod hole is adapted to the change in the depth of the pushing groove.

[0014] Preferably, a short stud is provided at the front end of the locking rod, and a locking nut that is rotationally engaged with the connecting edge is provided at the end of the rod hole corresponding to the short stud, and the locking nut and the short stud are threadedly engaged.

[0015] Preferably, the locking claw includes two claw plates arranged side by side, and a reinforcement strip is provided between the two claw plates; the driving rod is connected to the driving end of the locking claw through a short-circuit rod, and a hinge pin is provided between the claw plates of the driving end of the locking claw, one end of the short-circuit rod is sleeved outside the hinge pin to form a hinge connection with the driving end of the locking claw, and the other end is hinged to the driving rod.

[0016] Preferably, the locking claws located on both sides of the steel mold are respectively located on the upper mold shell and the lower mold shell.

[0017] Preferably, detection holes are provided at opposite positions on the two claw plates at the hook end of the locking claw, and after the locking claw locks the upper mold shell and the lower mold shell, the detection holes on all the locking claws are located on the same straight line.

[0018] The beneficial effects of the present invention are mainly reflected in the following aspects: by inserting and withdrawing the locking rod into the rod hole, the upper and lower mold shells of the steel mold can be quickly locked and unlocked. On the one hand, the present invention abandons the traditional form of locking the upper and lower mold shells by inserting a number of bolts into the holes one by one. The locking can be achieved by inserting the locking rod into the rod hole. Not only is the operation simpler, there is no need for complicated multi-point operation; on the other hand, in conjunction with various electric and pneumatic conveying tools, the movement of the walker in one direction can achieve the rapid insertion and withdrawal of the locking rod, which is very convenient for improving the overall automation level and lays a good foundation for the automation transformation and upgrading of modern cement pole factories. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the existing steel mold;

[0020] Figure 2 Schematic diagram of the structure of the steel mold of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a locking mechanism in a preferred embodiment;

[0022] Figure 4 for Figure 2 AA view of the structure shown in;

[0023] Figure 5 for Figure 4 Enlarged view of middle part B;

[0024] Figure 6 Schematic diagram of the structure of a preferred locking claw;

[0025] Figure 7 Schematic diagram of the structure of a preferred locking rod;

[0026] Figure 8 for Figure 7 Enlarged view of the middle D part;

[0027] Figure 9 for Figure 2 Enlarged view of middle C part;

[0028] Figure 10 Schematic diagram of the structure of the support plate;

[0029] Figure 11 for Figure 9 Left side view of the middle steam joint;

[0030] Figure 12 is a schematic structural diagram of the sealing assembly within the protrusion;

[0031] Figure 13 for Figure 12 Schematic diagram of the structure shown in the centrifugal state. DETAILED DESCRIPTION

[0032] The present invention is a steel mold 0 for forming cement pole concrete. The steel mold 0 also adopts a two-piece structure, mainly including an upper mold shell 1 and a lower mold shell 2. The edges of the upper mold shell 1 and the lower mold shell 2 are provided with connecting edges 3 for interlocking. In the traditional way, Figure 1 As shown in FIG, the buckling and locking method of the connecting edge 3 is to lock it by bolts, which has many inconveniences in operation and is not conducive to the implementation of automated transformation. The present invention is an improvement on the steel mold 0, and its main points are mainly concentrated in two aspects: the locking method and the steam jacket structure.

[0033] 1. From the perspective of locking method:

[0034] The connecting edge 3 of the present invention is provided with a locking mechanism and a locking rod 4 for cooperating with the locking mechanism. In other words, the locking mechanism is triggered by the locking rod 4. The locking mechanism includes a rod hole 5 extending along the length of the steel mold 0 for insertion of the locking rod 4. The locking rod 4 is also arranged along the length of the steel mold 0. It can be mounted on a rod insertion device of a pneumatic or electric drive, and is driven by the rod insertion device. For example, the simplest rod insertion device may include a support platform and a walking platform arranged on a guide rail. The support platform is used to support the head end of the locking rod 4 so that it is aligned with the rod hole 5, and the walking platform is used to move on the guide rail and push the locking rod 4 into or out. In operation, the locking rod 4 is inserted into the rod hole 5 from the end of the steel mold 0, and the locking mechanism locks the upper mold 1 and the lower mold 2. When the locking rod 4 is withdrawn, the locking mechanism unlocks the upper mold 1 and the lower mold 2.

[0035] On the one hand, the present invention abandons the traditional form of locking the upper mold shell 1 and the lower mold shell 2 after inserting a number of bolts into the holes one by one, and locking can be achieved by inserting the locking rod 4 into the rod hole 5. It is not only simpler to operate, but also does not require complicated multi-point operations; on the other hand, in conjunction with various electric and pneumatic conveying tooling, walkers (that is, rod insertion devices), etc., moving in one direction, the locking rod 4 can be quickly inserted and extracted, which is very convenient for improving the overall automation level and laying a good foundation for the automation transformation and upgrading of modern cement pole factories.

[0036] Generally, in the production workshop, the lower mold shell 2 of the steel mold 0 is positioned and transported on the conveyor line, and the upper mold shell 1 is hoisted onto the lower mold shell 2 by an overhead crane. Before placing the steel cage and closing the mold, the release agent should be sprayed on the inner wall surface of the upper mold shell 1 and the lower mold shell 2 to facilitate subsequent demolding.

[0037] In the present invention, the simplest way to lock and unlock by inserting the locking rod 4 is as follows. Figure 3 As shown in . The figure simply shows that the locking mechanism includes multiple groups of connecting ears 6 and ear grooves 7 distributed along the length direction of the connecting edge 3 of the steel mold 0, which are respectively arranged on the connecting edges 3 of the upper mold shell 1 and the lower mold shell 2. That is to say, when a plurality of connecting ears 6 are arranged on the lower surface of the connecting edge 3 of the upper mold shell 1, a plurality of ear grooves 7 for inserting the connecting ears 6 are arranged on the top of the connecting edge 3 of the lower mold shell 2; and when the ear grooves 7 are arranged on the upper mold shell 1, the lower mold shell 2 is provided with connecting ears 6. The connecting ears 6 are provided with through holes 8 that cooperate with the locking rod 4. The rod hole 5 is provided on the connecting edge 3 and is interconnected with the ear groove 7. In this way, when the connecting ears 6 are inserted into the ear groove 7, the locking rod 4 passes through the through holes 8 on the connecting ears 6 to lock the upper mold shell 1 and the lower mold shell 2.

[0038] The locking mechanism described above is the simplest, but in experiments we found it to be more suitable for locking shorter steel molds 0. For longer steel molds 0, however, due to the longer length of the locking rod 4, there is a greater risk of deformation due to the greater shear force from the connecting lug 6 during the locking process. This deformation can significantly affect the smoothness of insertion and extraction. Therefore, it is primarily suitable for steel molds 0 used in shorter cement poles or segmented cement poles. The shorter length significantly reduces the risk of deformation of the locking rod 4 itself.

[0039] And for the locking of the longer steel mold 0, the better approach of the present invention is as follows Figure 2 and 4 As shown in , the locking mechanism includes a plurality of locking claws 9 provided on the connecting edge 3. Figure 5 As shown in FIG, the middle section of the locking claw 9 is hinged to the hinge seat 10 on the connecting edge 3. The outer end of the locking claw 9 is a hook end, and the inner end is a driving end. When the locking claw 9 swings around the hinge seat 10, the hook end is used to hook the connecting edge 3, and the driving end is used as a trigger end to engage with the locking rod 4. Figure 5As shown in the figure, a first vertical hole 11 and a second vertical hole 12 are correspondingly provided on the connecting edge 3 of the upper mold shell 1 and the lower mold shell 2 on one side of the hinge seat 10, and a rod hole 5 is provided on the connecting edge 3 away from the hinge seat 10, and the rod hole 5 is connected to the second vertical hole 12. A driving rod 13 that can slide vertically is also provided in the first vertical hole 11 and the second vertical hole 12. One end of the driving rod 13 is connected to the driving end of the locking claw 9, and the other end extends into the rod hole 5. During the up and down movement of the driving rod 13, the driving end of the locking claw 9 is driven to move, thereby realizing the driving of the locking claw 9. Specifically, when the locking rod 4 is inserted into the rod hole 5, it can lift the driving rod 13 and use the driving rod 13 to drive the locking claw 9 to swing around the hinge seat 10, so as to press the connecting edge 3 of the upper mold shell 1 and the lower mold shell 2 through the hook end of the locking claw 9.

[0040] Compared with the method described above, this locking mechanism does not use the locking rod 4 as a direct locking component, but uses the locking claw 9 to hook and clamp the connecting plate 3. The overall length of each transmission component is relatively short, and it needs to directly withstand shearing, so the risk of deformation is relatively lower. The locking rod 4 is only used as a driving component, and it can move stably in the rod hole 5. Even if deformation and damage occur, the corresponding locking claw 9 and driving rod 13 and other components can be replaced separately. At the same time, in the process of closing the upper and lower mold shells, the driving rod 13 can also play the role of a positioning rod to achieve the closing and positioning of the upper and lower mold shells. For this purpose, the port of the second vertical hole 12 can be set to an expansion port to facilitate the insertion of the driving rod 13, for example: the port of the second vertical hole 12 is set to be trumpet-shaped. On this basis, in order to ensure the stability of the driving rod 13 and improve the convenience of installing and replacing the driving rod 13, such as Figure 5 As shown in the figure, the first vertical hole 11 of the present invention is provided with a guide cap 14 at one end facing the locking pawl 9. The end of the guide cap 14 is inserted into the first vertical hole 11 and forms a threaded fit with the first vertical hole 11, allowing for quick assembly and disassembly. The drive rod 13 passes through the guide cap 14 and forms a sliding fit with the guide cap 14. The end of the drive rod 13 located in the first vertical hole 11 is provided with a reducing disk 15 that mates with the first vertical hole 11. A return spring 16 is mounted on the outer surface of the drive rod 13 between the reducing disk 15 and the guide cap 14, with its ends fixedly connected to the reducing disk 15 and the guide cap 14, respectively. As shown in the figure, when the drive rod 13 is pushed upward, the return spring 16 is compressed. When the locking rod 4 is withdrawn, the return spring 16 returns the drive rod 13 downward, causing the locking pawl 9 to open. The end of the drive rod 13 located in the rod hole 5 is generally hemispherical, to facilitate its lifting by the locking rod 4.

[0041] The specific shape and structure of the locking rod 4 of the present invention can be as follows Figure 5As shown in FIG, the rod hole 5 is a circular hole, and the locking rod 4 is a round rod with a hemispherical end that fits the rod hole 5. This circular locking rod 4 can be directly inserted into the rod hole 5 without considering the circumferential angle, making it more universal. However, its disadvantage is that as the locking rod 4 is inserted, each locking claw 9 locks one by one according to the direction of the locking rod 4. If the locking rod 4 is deformed at any point, especially convex deformation, it can easily lead to excessive clamping force of the locking claw 9, posing a risk of damage. Moreover, as the locking rod 4 is gradually inserted, each locking claw 9 will be affected, significantly increasing subsequent maintenance costs.

[0042] A possible solution is, for example, to design the locking rod 4 into a conical shape, that is, gradually increasing in size from the insertion end to the rear end, and to adapt the extension length of the driving rod 13 corresponding to each locking claw 9 in the rod hole 5 to this shape. In this way, the different sized sections of the locking rod 4 are responsible for driving the corresponding locking claw 9. Even if the locking rod 4 is partially deformed, it will not cause simultaneous damage to multiple locking claws 9. However, the problem with this approach is that the entrance section of the rod hole 4 does not provide circumferential support for the insertion end of the locking rod 4, which can cause the locking rod 4 to swing, which is not conducive to the design and implementation of automated operations.

[0043] Therefore, a better approach of the present invention is that the end of the driving rod 13 located in the rod hole 5 is hemispherical, such as Figure 7 and 8 As shown in FIG, the rod hole 5 is a square hole, and the locking rod 4 is a square rod that matches the rod hole 5. This approach requires addressing the circumferential orientation of the locking rod 9 during insertion to ensure insertion stability. However, this issue can be relatively easily addressed through a flared guide design, for example, by configuring the insertion end of the rod hole 5 to be flared. A thrust groove 17 extending along the length of the locking rod 4 is provided on the top surface of the locking rod 4. The bottom of the thrust groove 17 is arc-shaped, and the depth of the thrust groove 17 gradually decreases from the front end to the rear end of the locking rod 4. When the return spring 16 is in its natural state, the length of the drive rod 13 corresponding to each locking claw 9 extending out of the rod hole 5 matches the change in the depth of the thrust groove 17. This solves the problem of the locking rod 4 driving different drive rods 13 in sections while also effectively ensuring the stability of the locking rod 4 during insertion. Considering that the steel mold 0 needs to be shaped by high-speed centrifugation after pouring concrete, in order to prevent the locking rod 4 from coming out after insertion, an end cap can be provided at the end of the rod hole 5, or, as shown in FIG. Figure 8As shown in , the front end of the locking rod 4 is provided with a short stud 18. The end of the rod hole 5 corresponding to the short stud 18 is provided with a locking nut 19 that forms a rotational fit with the connecting edge 3 (generally, it is mounted on the connecting edge 3 corresponding to the end of the rod hole 5 in a manner similar to a bearing). The locking nut 19 forms a threaded fit with the short stud 18. In this way, when the locking rod 4 is fully inserted, a moving platform carrying a screwing tool can be moved to the locking nut 19. Rotating the locking nut 19 can engage the locking nut 19 and the short stud 18, thereby preventing the locking rod 4 from falling out. At the same time, it can also provide a further tightening effect, improving the fastening effect.

[0044] Regarding the locking claw 9 of the present invention, in order to ensure its strength, as shown in FIG. Figure 6 As shown in FIG, the locking claw 9 generally includes two claw plates 20 arranged side by side, and a reinforcement strip 21 is provided between the two claw plates 20. The driving rod 13 is connected to the driving end of the locking claw 9 through a shorting rod 22, and a hinge pin 23 is provided between the claw plates 20 at the driving end of the locking claw 9, as shown in FIG. Figure 5 As shown in , one end of the shorting rod 22 is sleeved outside the hinge pin 23 and is hinged to the driving end of the locking claw 9, and the other end is hinged to the driving rod 13.

[0045] In addition, in order to ensure the central symmetry of the steel mold 0 counterweight and improve its rotation stability during centrifugal feeding, the locking claws 9 on both sides of the steel mold 0 are respectively located on the upper mold shell 1 and the lower mold shell 2. In addition, in order to check the locking status of each locking claw 9, as shown in FIG. Figure 6 As shown in FIG, the two claw plates 20 at the hook end of the locking claw 9 of the present invention are provided with detection holes 24 at opposing positions. After the locking claw 9 locks the upper mold shell 1 and the lower mold shell 2, all the detection holes 24 on the locking claw 9 are located on the same straight line. The aperture of the detection holes 24 is generally small, about 0.2-0.4 cm. In this way, a set of infrared beam devices can be used to pass infrared light through all the detection holes 24 to verify the locking status of all the locking claws 9 on one side.

[0046] 2. Steam jacket structure

[0047] The steel mold 0 of the present invention can also preheat the steel mold 0 itself and the concrete inside while centrifugally distributing the material, thereby improving production efficiency. Figure 9 As shown in FIG, the upper mold shell 1 and the lower mold shell 2 of the present invention each include a main shell and a steam connector 25 provided at one end of the main shell for introducing preheated steam. The main shell includes an inner shell plate 26 and an outer shell plate 27, and a steam preheating chamber 28 is formed between the inner shell plate 26 and the outer shell plate 27. The steam connector 25 is connected to the steam preheating chamber 28.

[0048] The upper and lower molds of the present invention form a steam preheating chamber 28 through two layers of shell plates. During the centrifugal distribution stage, a certain amount of steam can be introduced, accelerating molding by raising the temperature, and achieving preheating, preparing for subsequent steam curing. Specifically, by preheating the steel mold 0 and the concrete inside, preheating is eliminated during the steam curing stage (or the preheating time during the steam curing stage is shortened), greatly improving the production efficiency of cement poles. Simultaneously, steam is introduced from the end through the steam connector 25. Without affecting the centrifugal distribution operation of the workpiece on the centrifugal device, steam can be simultaneously introduced into the steam preheating chamber 28 and the inner cavity of the steel mold 0, achieving excellent results.

[0049] In order to ensure the stability between the inner shell 26 and the outer shell 27, a plurality of sheets such as Figure 10 As shown, a C-shaped support plate 29 divides the steam preheating chamber 28 into multiple chambers evenly distributed along the length of the steel mold 0. These chambers are connected by air distribution holes 30 in the support plate 29. After steam enters the steam connector 25, it enters each chamber in turn and is evenly distributed by the air distribution holes 30. The steam connector 25 of the present invention is semi-conical in shape and is secured to the end face of the main shell by screws 31. The smaller end of the steam connector 25 forms an air inlet 32 with a C-shaped cross-section. The air inlet 32 of the two steam connectors 25 communicate to form a steam inlet, through which external steam is introduced. To facilitate steam entry into the steam preheating chamber 28 and into the interior of the main shell (i.e., the inner shell plate 26), a central air port 33 communicating with the interior of the main shell is located at the center of the end face of the larger end of the steam connector 25, and side air ports 34 communicating with the steam preheating chamber 28 are located at the edge of the end face.

[0050] In addition, the outer surface of the shell plate 27 of the present invention is also provided with a reinforcement rib plate group to improve the structural strength of the main shell. As shown in the figure, the reinforcement rib plate group includes longitudinal ribs 35 extending along the length of the steel mold 0 and transverse ribs 36 extending circumferentially around the steel mold 0. The transverse ribs 36 and the longitudinal ribs 35 are welded to each other. At the same time, the transverse ribs 36 are grouped in pairs, and multiple groups are evenly distributed along the length of the steel mold 0. In this form, Figure 9 As shown in FIG, a centrifugal support plate 37 is provided between each set of transverse ribs 36. The centrifugal support plates 37 and the transverse ribs 36 on the upper mold shell 1 and the lower mold shell 2 together form an annular bracket 38 for connecting the centrifugal device.

[0051] Of course, to facilitate the placement of the sealing disc on the steel cage within the steel mold 0, annular grooves are provided on the inner wall surfaces of the inner shell 26 near both ends for the sealing disc. Once the sealing disc is placed in the annular grooves, the upper and lower molds are closed to form a stable structure. The jacketed steam preheating structure of the present invention features a steam connector 25 at one end of the steel mold 0, while the other end utilizes a conventional design, directly serving as a pump pipe insertion port for concrete pouring.

[0052] The present invention adopts a double-layer design, which ensures the introduction of steam during the centrifugal distribution stage and the closure of the steam preheating chamber 28. At the same time, in order to reduce the impact of the double-layer structure on the passive inflow of steam during the steam curing stage and ensure the permeability of high-temperature steam during the steam curing stage, a better approach of the present invention is that a plurality of outwardly protruding disc-shaped protrusions 39 are evenly provided on the circumference of the main shell, a first air port 40 is provided on the side wall of the protrusion 39, and a sealing assembly is provided in the protrusion 39. The sealing assembly can close the first air port 40 under the action of centrifugal force to isolate the steam preheating chamber 28 from the outside world, and can also open the first air port 40 in a natural state to connect the steam preheating chamber 28 with the outside world.

[0053] In order to achieve the above functions, Figure 12 and 13 As shown in FIG, the sealing assembly includes a sealing cap 41 disposed in the protrusion 39 and forming a sliding fit with the protrusion 39. A second air passage 42 is provided on the side wall of the sealing cap 41. A push spring 43 is provided between the sealing cap 41 and the outer end surface of the protrusion 39. The push spring 43 is in a natural state, as shown in FIG. Figure 12 As shown, the second air outlet 42 on the sealing cap 41 is opposite to the first air outlet 40, forming a conduction. Figure 13 As shown, the second air inlet 42 on the sealing cap 41 is staggered with the first air inlet 40 to form an isolation.

[0054] In addition, considering the need for some steel molds 0 to have reserved connection holes (the connection holes are used to connect with cross arms or install other accessories on cement poles), a number of bolt holes 44 for accommodating embedded bolts are also provided on the circumference of the main shell, and the bolt holes 44 pass through the inner shell plate 26 and the outer shell plate 27 of the main shell.

Claims

1. A quick locking structure for a cement pole concrete forming mold, comprising a steel mold (0) consisting of an upper mold shell (1) and a lower mold shell (2); The edges of both sides of the upper mold shell (1) and the lower mold shell (2) are provided with connecting edges (3) for mutual buckling, and are characterized in that: The connecting edge (3) is provided with a locking mechanism and a locking rod (4) for cooperating with the locking mechanism. The locking mechanism includes a rod hole (5) extending along the length direction of the steel mold (0) for inserting the locking rod (4). The locking rod (4) is inserted into the rod hole (5) from the end of the steel mold (0), and the upper mold shell (1) and the lower mold shell (2) are locked by the locking mechanism; the locking rod (4) is pulled out, and the upper mold shell (1) and the lower mold shell (2) are unlocked by the locking mechanism.

2. The quick locking structure of the cement pole concrete forming mold according to claim 1 is characterized in that: The locking mechanism comprises a plurality of connecting ears (6) and ear slots (7) distributed along the length direction of the connecting edge (3) of the steel mold (0) and respectively arranged on the connecting edge (3) of the upper mold shell (1) and the lower mold shell (2); the connecting ears (6) are provided with through holes (8) that match the locking rod (4); the rod holes (5) are provided on the connecting edge (3) and are mutually connected with the ear slots (7); the connecting ears (6) are inserted into the ear slots (7), and the locking rod (4) passes through the through holes (8) on the connecting ears (6) to lock the upper mold shell (1) and the lower mold shell (2).

3. The quick locking structure of the cement pole concrete forming mold according to claim 2, characterized in that: The locking mechanism comprises a plurality of locking claws (9) arranged on the connecting edge (3), the middle section of the locking claws (9) is hinged to the hinge seat (10) on the connecting edge (3), the outer end of the locking claw (9) is a hook end, and the inner end is a driving end; the connecting edge (3) of the upper mold shell (1) and the lower mold shell (2) on one side of the hinge seat (10) is also correspondingly provided with a first vertical hole (11) and a second vertical hole (12), and the connecting edge (3) away from the hinge seat (10) is provided with a rod hole (5), and the rod hole (5) is connected to the second vertical hole (11). 2) through; a driving rod (13) capable of sliding vertically is further provided in the first vertical hole (11) and the second vertical hole (12), one end of the driving rod (13) is connected to the driving end of the locking claw (9), and the other end extends into the rod hole (5); when the locking rod (4) is inserted into the rod hole (5), it can lift the driving rod (13) and use the driving rod (13) to drive the locking claw (9) to swing around the hinge seat (10), so as to press the connecting edge (3) of the upper mold shell (1) and the lower mold shell (2) through the hook end of the locking claw (9).

4. The quick locking structure of the cement pole concrete forming mold according to claim 3 is characterized by: A guide cap (14) is provided at one end of the first vertical hole (11) facing the locking claw (9), and an end of the guide cap (14) is inserted into the first vertical hole (11) and forms a threaded fit with the first vertical hole (11); the driving rod (13) passes through the guide cap (14) and forms a sliding fit with the guide cap (14); a reducing disk (15) is provided at one end of the driving rod (13) located in the first vertical hole (11) and matches the first vertical hole (11), and a return spring (16) is provided on the outer sleeve of the driving rod (13) between the reducing disk (15) and the guide cap (14), with both ends fixedly connected to the reducing disk (15) and the guide cap (14) respectively.

5. The quick locking structure of the cement pole concrete forming mold according to claim 4, characterized in that: One end of the driving rod (13) located in the rod hole (5) is hemispherical, the rod hole (5) is a round hole, and the locking rod (4) is a round rod matched with the rod hole (5) and having a hemispherical end.

6. The quick locking structure of the cement pole concrete forming mold according to claim 4, characterized in that: One end of the driving rod (13) located in the rod hole (5) is hemispherical, the rod hole (5) is a square hole, and the locking rod (4) is a square rod matched with the rod hole (5); the top surface of the locking rod (4) is provided with a pushing groove (17) extending along the length direction of the locking rod (4), the groove bottom of the pushing groove (17) is arc-shaped, and the depth of the pushing groove (17) gradually becomes shallower from the front end to the rear end of the locking rod (4); when the reset spring (16) is in a natural state, the length of the driving rod (13) corresponding to each locking claw (9) extending out of the rod hole (5) is adapted to the change in the depth of the pushing groove (17).

7. The quick locking structure of the cement pole concrete forming mold according to claim 6, characterized in that: A short stud (18) is provided at the front end of the locking rod (4), and a locking nut (19) is provided at the end of the rod hole (5) corresponding to the short stud (18) and is rotationally engaged with the connecting edge (3), and the locking nut (19) and the short stud (18) are threadedly engaged.

8. The quick locking structure of the cement pole concrete forming mold according to claim 7, characterized in that: The locking claw (9) comprises two claw plates (20) arranged side by side, and a reinforcement strip (21) is provided between the two claw plates (20); the driving rod (13) is connected to the driving end of the locking claw (9) through a short-circuit rod (22), and a hinge pin (23) is provided between the claw plates (20) at the driving end of the locking claw (9); one end of the short-circuit rod (22) is sleeved outside the hinge pin (23) to form a hinge connection with the driving end of the locking claw (9), and the other end is hinged to the driving rod (13).

9. The quick locking structure of the cement pole concrete forming mold according to claim 8, characterized in that: The locking claws (9) located on both sides of the steel mold (0) are respectively located on the upper mold shell (1) and the lower mold shell (2).

10. The quick locking structure of the cement pole concrete forming mold according to claim 9, characterized in that: Detection holes (24) are provided at opposite positions on the two claw plates (20) at the hook end of the locking claw (9), and after the locking claw (9) locks the upper mold shell (1) and the lower mold shell (2), the detection holes (24) on all the locking claws (9) are located on the same straight line.

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