Quick locking structure of a cement pole concrete forming mold

Abstract

The present application relates to the technical field of concrete processing. The purpose is to provide a quick locking structure of a cement pole concrete forming mold, which comprises a steel mold composed of an upper mold shell and a lower mold shell; the edges of the upper mold shell and the lower mold shell on both sides are provided with connecting edges for mutual buckling; the locking mechanism comprises a rod hole extending along the length direction of the steel mold for inserting a locking rod; the locking rod is inserted into the rod hole from the end of the steel mold; and the locking of the upper mold shell and the lower mold shell is formed by the locking mechanism. Through the insertion and extraction of the locking rod in the rod hole, the locking and unlocking of the upper mold shell and the lower mold shell of the steel mold can be quickly realized, which lays a good foundation for the automatic upgrading of modern cement pole factories.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete processing, and particularly relates to a quick locking structure of a cement pole concrete forming mold. BACKGROUND

[0002] The cement pole, also known as a concrete pole, is a pole-shaped structure used for supporting power components such as insulators and fittings to realize power grid wiring. It is usually made of a steel reinforcement cage and cement poured outside the steel reinforcement cage, and has the advantages of being solid and durable, corrosion-resistant, and having a relatively low cost. During the production and manufacturing process of the cement pole, a steel reinforcement cage is first prepared using a roll welding machine, and then the steel reinforcement cage is placed in a hollow cylindrical steel mold composed of an upper mold shell and a lower mold shell. When placing, it is necessary to ensure that the sealing discs at both ends of the steel reinforcement cage are located in the disc grooves, and the main body of the steel reinforcement cage is located in the steel mold. Then, concrete is poured. The pouring process can be either pouring through the opening at the end of the steel mold using a pump pipe after the mold is closed, or pouring first and then closing the upper and lower mold shells. After completion, the steel mold is transferred to a centrifugal distribution device for centrifugal casting of the steel mold to make the concrete dense and uniformly distributed in a hollow tubular structure. Subsequent processes such as steam maintenance and drying are performed to complete the production and manufacturing.

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

[0004] 1. The upper mold shell and the lower mold shell of the traditional steel mold are connected by bolts. Since the length of the steel mold is relatively long, a large number of bolts are required. At present, the installation of the bolts is mainly performed manually (or only assisted by a hand drill). This method not only consumes a large amount of manual operation and increases the difficulty, but more importantly, since manual intervention is required for the installation of the bolts, it is not conducive to the full automatic production of the industrial production line. Even if multi-axis industrial robots or mechanical hands are arranged for automatic operation, due to the large number of connection points, a large number of robots, mechanical hands, etc. (usually 2-4) are required, resulting in high equipment cost. Therefore, it is difficult to realize truly automatic production in the prior art, which does not meet the production needs of modern enterprises.

[0005] 2. When the steel mold is first placed into the steam chamber for high-temperature steam curing, the temperature of the steel mold and the concrete inside is still relatively low. To avoid significant differences in shrinkage rates due to uneven heating between the concrete surface and the center, existing technologies require preheating with steam. Once the temperature of the concrete and steel mold reaches a certain level and becomes uniform, the steam output power is increased for high-temperature steam curing. This reduces the efficiency of steam curing and affects overall production efficiency. Theoretically, if the steel mold and the concrete inside could be preheated during the centrifugal placing stage (especially in the later stages), it would not only effectively improve the structural stability of the concrete after it has been formed in the steel mold, but also reduce the preheating period during steam curing. This would significantly improve the overall production efficiency of cement poles. However, no such technology has been reported yet. Summary of the Invention

[0006] The purpose of this invention is to provide a quick-locking structure for concrete forming molds of cement poles that can achieve rapid locking and facilitate automated line modification.

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

[0008] The upper and lower mold shells are provided with connecting edges on both sides for interlocking. 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 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, thereby locking the upper and lower mold shells through the locking mechanism. When the locking rod is pulled out, the upper and lower mold shells are unlocked through the locking mechanism.

[0009] Preferably, the locking mechanism includes multiple sets of connecting ears and ear slots distributed along the length of the steel mold connecting edge and respectively disposed on the connecting edge of the upper mold shell and the lower mold shell. The connecting ears are provided with through holes that cooperate with locking rods. The rod hole is disposed on the connecting edge and communicates with the ear slot. The connecting ear is inserted into the ear slot, and the locking rod passes through the through hole on the connecting ear to form a lock on the upper mold shell and the lower mold shell.

[0010] Preferably, the locking mechanism comprises a plurality of locking claws arranged on the connecting edge, the middle section of the locking claw is hinged with 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 upper die shell and the lower die shell on one side of the hinge seat are further provided with a first vertical hole and a second vertical hole corresponding to the connecting edge, and a rod hole is arranged on the connecting edge away from the hinge seat, the rod hole is communicated with the second vertical hole; a driving rod capable of sliding vertically is further arranged in the first vertical hole and the second vertical hole, one end of the driving rod is connected with the driving end of the locking claw, and the other end extends into the rod hole; when the locking plug rod is inserted into the rod hole, the driving rod can be lifted up, and the driving rod drives the locking claw to swing around the hinge seat to press the connecting edge of the upper die shell and the lower die shell by the hook end of the locking claw.

[0011] Preferably, the first vertical hole is provided with a guide cap at one end of the locking claw, the end of the guide cap is inserted into the first vertical hole, and the guide cap and the first vertical hole form a threaded fit; the driving rod passes through the guide cap and forms a sliding fit with the guide cap; one end of the driving rod located in the first vertical hole is provided with a variable diameter disc matched with the first vertical hole, and a return spring is arranged outside the driving rod between the variable diameter disc and the guide cap and fixedly connected with the variable diameter disc and the guide cap at both ends.

[0012] Preferably, one end of the driving rod located in the rod hole is semispherical, the rod hole is a circular hole, and the locking plug rod is a circular rod with a semispherical end.

[0013] Preferably, one end of the driving rod located in the rod hole is semispherical, the rod hole is a square hole, and the locking plug rod is a square rod matched with the rod hole; the top surface of the locking plug rod is provided with a pushing groove extending along the length direction of the locking plug rod, the groove bottom of the pushing groove is arc-shaped, and the depth of the pushing groove gradually decreases from the front end to the rear end of the locking plug rod; when the return spring is in a natural state, the length of each driving rod of the locking claw extending out of the rod hole is matched with the depth change of the pushing groove.

[0014] Preferably, the front end of the locking plug rod is provided with a short stud, the end of the rod hole corresponding to the short stud is provided with a locking nut forming a rotating fit with the connecting edge, and the locking nut and the short stud form a threaded fit.

[0015] Preferably, the locking claw comprises two claw plates arranged side by side, and a reinforcing strip is arranged between the two claw plates; the driving end of the locking claw is connected with the driving rod through a short connecting rod, a hinge pin is arranged between the claw plates of the driving end of the locking claw, one end of the short connecting rod is sleeved outside the hinge pin and forms a hinge with the driving end of the locking claw, and the other end forms a hinge with the driving rod.

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

[0017] Preferably, opposite positions on the two claw plates of the locking claw hook end are provided with detection holes, 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 application are mainly reflected in that: through the insertion and extraction of the locking insertion rod in the rod hole, the locking and unlocking of the upper mold shell and the lower mold shell of the steel mold can be quickly realized. On the one hand, the present application discards the traditional form of locking the upper mold shell and the lower mold shell by inserting a plurality of bolts into the hole one by one, and the locking insertion rod is inserted into the rod hole, which can realize locking, which is not only simpler in operation, but also does not have complex multi-point operation; on the other hand, cooperating with various electric, pneumatic conveying tools, walking devices, etc. in one direction, the locking insertion rod can be quickly inserted and extracted, which is very convenient to improve the overall automation level, and lays a good foundation for the automation transformation and upgrading of modern cement pole factories. BRIEF DESCRIPTION OF DRAWINGS

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

[0020] Figure 2 It is a structural schematic diagram of the steel mold of the present application;

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

[0022] Figure 4 It is Figure 2 A-A view of the structure shown in FIG. 1;

[0023] Figure 5 It is Figure 4 B part of FIG. 1 is an enlarged view;

[0024] Figure 6 It is a structural schematic diagram of a preferred locking claw;

[0025] Figure 7 It is a structural schematic diagram of a preferred locking insertion rod;

[0026] Figure 8 It is Figure 7 D part of FIG. 1 is an enlarged view;

[0027] Figure 9 It is Figure 2 C part of FIG. 1 is an enlarged view;

[0028] Figure 10 It is a structural schematic diagram of a support plate;

[0029] Figure 11 It is Figure 9 Left view of the steam joint in FIG. 1;

[0030] Figure 12 Structure diagram of the sealing assembly in the protrusion;

[0031] Figure 13 Structure diagram of the structure shown in Figure 12 Structure diagram of the structure shown in DETAILED DESCRIPTION

[0032] The utility model is a kind of steel mould for cement pole concrete forming, which also adopts two-lid structure, mainly including upper mould shell 1 and lower mould shell 2, the edge of the upper mould shell 1 and lower mould shell 2 is provided with connecting edge 3 for mutual buckling. Figure 1 As shown in the prior art, the buckling locking mode of connecting edge 3 is locking by bolt, which is inconvenient in operation and is not conducive to the automation transformation. The utility model is an improvement of the steel mould, and the main points are concentrated in locking mode and steam jacket structure.

[0033] I. From the locking mode:

[0034] The connecting edge 3 is provided with a locking mechanism and a locking rod 4 for cooperating with the locking mechanism, that is, the locking mechanism is triggered by the locking rod 4, and the locking mechanism includes a rod hole 5 extending along the length direction of the steel mould for inserting the locking rod 4, and the locking rod 4 is arranged along the length direction of the steel mould, which can be carried on the plug rod device in the form of air drive, electric drive, etc., and is driven to move by the plug rod device, for example, the simplest plug rod device can include a support table and a walking table arranged on a guide rail, the support table is used for supporting the head end of the locking rod 4 to align with the rod hole 5, and the walking table is used for walking on the guide rail and pushing the locking rod 4 to insert or extract.

[0035] On the one hand, the utility model discards the traditional form of locking the upper mould shell 1 and the lower mould shell 2 by inserting a plurality of bolts into the hole one by one, and the locking rod 4 is inserted into the rod hole 5 to realize locking, which is more simple in operation without complex multi-point operation; on the other hand, cooperating with various electric, pneumatic conveying tooling, walking device (i.e. plug rod device) and the like in one direction, the locking rod 4 can be quickly inserted and extracted, which is very convenient to improve the overall automation level and lays a good foundation for the automation transformation and upgrading of modern cement pole factory.

[0036] Generally, the lower mold shell 2 of the steel mold 0 is positioned and transported on a conveying line in a production workshop, and the upper mold shell 1 is hoisted to the lower mold shell 2 by a crane. Before the reinforcement cage is positioned and the mold is closed, the inner wall surfaces of the upper mold shell 1 and the lower mold shell 2 should be sprayed with a mold release agent to facilitate subsequent mold release.

[0037] In the working mode of the present application, the locking rod 4 is inserted for locking and extracted for unlocking, the simplest mode can be as shown in Figure 3 The locking mechanism includes a plurality of connecting ears 6 and ear grooves 7 distributed along the length direction of the connecting edge 3 of the steel mold 0 and arranged on the connecting edge 3 of the upper mold shell 1 and the lower mold shell 2, respectively. That is, 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. When the ear grooves 7 are arranged on the upper mold shell 1, the connecting ears 6 are arranged on the lower mold shell 2. The connecting ears 6 are provided with through holes 8 matched with the locking rod 4. The rod holes 5 are arranged on the connecting edge 3 and communicate with the ear grooves 7. In this way, when the connecting ears 6 are inserted into the ear grooves 7, the locking rod 4 passes through the through holes 8 of the connecting ears 6 to form the locking of the upper mold shell 1 and the lower mold shell 2.

[0038] The locking mechanism of the above-mentioned mode is the simplest, but we found in experiments that it is more suitable for locking the steel mold 0 with a shorter length. For the steel mold 0 with a longer length, since the locking rod 4 is longer, it needs to bear a larger shear force from the connecting ear 6 during the locking process, and it has a greater risk of deformation, and such deformation will greatly affect the smoothness of its insertion and extraction. Therefore, it is mainly suitable for the steel mold 0 used for shorter cement poles or segmented cement poles, and the shorter length can significantly reduce the deformation risk of the locking rod 4 itself.

[0039] For the locking of the steel mold 0 with a longer length, the better way of the present application is as shown in Figure 2 and 4 The locking mechanism includes a plurality of locking claws 9 arranged on the connecting edge 3. As shown in Figure 5 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. During the swinging of the locking claw 9 around the hinge seat 10, the hook end is used for hooking the connecting edge 3, and the driving end is used as a trigger end for being combined to the locking rod 4. As shown in Figure 5As shown, 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. A rod hole 5 is provided on the connecting edge 3 away from the hinge seat 10, and the rod hole 5 communicates with the second vertical hole 12. A drive 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 drive rod 13 is connected to the drive end of the locking claw 9, and the other end extends into the rod hole 5. During the up and down movement of the drive rod 13, it drives the drive end of the locking claw 9 to move, thereby driving the locking claw 9. Specifically, when the locking rod 4 is inserted into the rod hole 5, it can push up the drive rod 13, and use the drive rod 13 to drive the locking claw 9 to swing around the hinge seat 10, so that the hook end of the locking claw 9 presses against the connecting edge 3 of the upper mold shell 1 and the lower mold shell 2.

[0040] Compared to the previously described locking mechanism, this locking mechanism does not use the locking rod 4 as a direct locking component. Instead, it uses the locking claw 9 to hook and clamp the connecting plate 3. The overall length of each transmission component is shorter, and since it directly withstands shearing, the risk of deformation is relatively lower. The locking rod 4 is only used as a driving component, and it can move stably within the rod hole 5. Even if deformation or damage occurs, the corresponding locking claw 9 and driving rod 13 can be replaced individually. Simultaneously, during the mold closing process of the upper and lower mold shells, the driving rod 13 also acts as a positioning rod, achieving mold closing positioning of the upper and lower mold shells. For this purpose, the port of the second vertical hole 12 can be set as an expansion port to facilitate the insertion of the driving rod 13; for example, the port of the second vertical hole 12 can be set in a trumpet shape. Furthermore, to ensure the stability of the driving rod 13 and improve the convenience of its installation and replacement, such as... Figure 5 As shown, a guide cap 14 is provided at the end of the first vertical hole 11 facing the locking claw 9. The end of the guide cap 14 is inserted into the first vertical hole 11 and forms a threaded engagement 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 engagement with it. A variable diameter disc 15, which engages with the first vertical hole 11, is provided at the end of the drive rod 13 located within the first vertical hole 11. A return spring 16, with its two ends fixedly connected to the variable diameter disc 15 and the guide cap 14 respectively, is sleeved on the drive rod 13 between the variable diameter disc 15 and the guide cap 14. As shown, when the drive rod 13 is pushed upwards, the return spring 16 is compressed. When the locking rod 4 is pulled out, the drive rod 13 is reset downwards under the action of the return spring 16, causing the locking claw 9 to open. The end of the drive rod 13 located within the rod hole 5 is generally hemispherical to facilitate being pushed up by the locking rod 4.

[0041] The specific shape and structure of the locking rod 4 of the present invention can be described as follows: Figure 5As shown in the figure, the rod hole 5 is a circular hole, and the locking plug rod 4 is a circular rod with a hemispherical end matched with the rod hole 5. This circular locking plug rod 4 can be directly inserted into the rod hole 5 without considering the circumferential angle, and has strong universality. However, the locking plug rod 4 has the following disadvantages: with the insertion of the locking plug rod 4, each locking claw 9 is locked in sequence according to the direction of the locking plug rod 4, once the locking plug rod 4 is deformed, especially upwardly deformed, the locking claw 9 is easily damaged due to excessive clamping force, and with the gradual insertion of the locking plug rod 4, each locking claw 9 is affected, which significantly increases the maintenance cost in the later period.

[0042] The solution can be, for example: the locking plug rod 4 is set as a circular cone, that is, gradually increases from the insertion end to the tail end, and the extension length of each driving rod 13 in the rod hole 5 is matched with the extension length, so that each section of the locking plug rod 4 is responsible for driving the corresponding locking claw 9, and even if the locking plug rod 4 is locally deformed, it will not cause synchronous damage to multiple locking claws 9. However, this method has the following problems: the entrance section of the rod hole 4 does not have circumferential limiting support for the insertion end of the locking plug rod 4, which causes the locking plug rod 4 to swing, and is not conducive to the design and implementation of automatic action.

[0043] Therefore, the better way of the present application can also be that one end of the driving rod 13 in the rod hole 5 is hemispherical, as shown in the figure, Figure 7 and 8 As shown in the figure, the rod hole 5 is a square hole, and the locking plug rod 4 is a square rod matched with the rod hole 5. This method needs to solve the problem of the circumferential direction of the locking plug rod 9 during insertion to ensure the stability of insertion, but it can be relatively easily solved by expanding the guide design, for example, the insertion end of the rod hole 5 is set as a trumpet shape. A pushing groove 17 extending along the length direction of the locking plug rod 4 is arranged on the top surface of the locking plug rod 4, the groove bottom of the pushing groove 17 is arc-shaped, and the depth of the pushing groove 17 gradually decreases from the front end to the rear end of the locking plug rod 4. When the reset spring 16 is in a natural state, the extension length of each driving rod 13 in the rod hole 5 is matched with the depth change of the pushing groove 17. In this way, while solving the problem that the locking plug rod 4 drives different driving rods 13 in sections, the stability of the locking plug rod 4 during the insertion movement can also be better ensured. Considering that the steel mold 0 needs to be shaped by high-speed centrifugation after pouring concrete, in order to prevent the locking plug rod 4 from being pulled out after insertion, an end cover can be arranged at the end of the rod hole 5, or, as shown in the figure, Figure 8As shown in the figure, the front end of the locking rod 4 is provided with a short stud 18, and the end of the rod hole 5 corresponding to the short stud 18 is provided with a locking nut 19 which is in rotational cooperation with the connecting edge 3 (usually installed at the end of the rod hole 5 corresponding to the connecting edge 3 by means of a bearing-like structure) and is in threaded cooperation with the short stud 18. In this way, when the locking rod 4 is inserted completely, a rotating tool can be moved to the locking nut 19 by moving the platform, and the locking nut 19 can be rotated to combine the locking nut 19 and the short stud 18, thereby preventing the locking rod 4 from being pulled out, and further tightening effect can be achieved to improve the fastening effect.

[0044] Regarding the locking claw 9 of the present application, in order to ensure its strength, as shown in the figure, Figure 6 As shown in the figure, the locking claw 9 generally includes two claw plates 20 arranged side by side, and a reinforcing strip 21 is arranged between the two claw plates 20. The driving rod 13 is connected to the driving end of the locking claw 9 through a short connecting rod 22, and a hinge pin 23 is arranged between the claw plates 20 of the driving end of the locking claw 9. As shown in the figure, Figure 5 One end of the short connecting 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 the stability of the rotation during the centrifugal distribution, the locking claws 9 located on both sides of the steel mold 0 are arranged on the upper mold shell 1 and the lower mold shell 2. In addition, in order to check and detect the locking condition of each locking claw 9, as shown in the figure, Figure 6 The opposite positions of the two claw plates 20 of the hook end of the locking claw 9 of the present application are provided with detection holes 24, and 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, and the diameter of the detection hole 24 is generally small, about 0.2-0.4CM. In this way, by using a set of infrared light transmission devices, the locking condition of all the locking claws 9 on one side can be checked by using infrared light to pass through all the detection holes 24.

[0046] II. Steam jacket structure

[0047] The steel mold 0 of the present application can also preheat the steel mold 0 itself and the internal concrete while distributing the centrifugal material, thereby improving the production efficiency. For this purpose, as shown in the figure, Figure 9 The upper mold shell 1 and the lower mold shell 2 of the present application each include a main shell and a steam joint 25 arranged at one end of the main shell for introducing preheating steam. The main shell includes an inner shell plate 26 and an outer shell plate 27, and a steam preheating cavity 28 is formed between the inner shell plate 26 and the outer shell plate 27, and the steam joint 25 is in communication with the steam preheating cavity 28.

[0048] The upper and lower mold shells of the present application form a steam preheating cavity 28 through two layers of shell plates, and a certain amount of steam can be introduced during the centrifugal distribution stage, which can accelerate the molding by increasing the temperature and realize preheating, so as to prepare for the subsequent steam curing in advance. Specifically, the steel mold 0 and the internal concrete are preheated, so that preheating is not required during the steam curing stage (or the preheating time of the steam curing stage is shortened), which can greatly improve the production efficiency of the cement pole. At the same time, steam is introduced from the end through the steam joint 25, which can ensure the simultaneous introduction of steam into the steam preheating cavity 28 and the internal cavity of the steel mold 0 without affecting the centrifugal distribution operation of the workpiece on the centrifugal device, and the use effect is excellent.

[0049] In order to ensure the stability between the inner shell plate 26 and the outer shell plate 27 and realize middle support to prevent deformation, a plurality of support plates 29 in the shape of C are arranged between the inner shell plate 26 and the outer shell plate 27. Figure 10 As shown, the support plates 29 divide the steam preheating cavity 28 into a plurality of chambers uniformly distributed along the length direction of the steel mold 0, and the chambers are connected through the gas distribution holes 30 on the support plates 29. After the steam enters from the steam joint 25, it enters the chambers in turn and is uniformly distributed by the gas distribution holes 30. The steam joint 25 is in the shape of a semi-cone, and is fixed to the end face of the main shell body through a screw 31. The smaller end of the steam joint 25 is an air inlet end 32 in the shape of C in cross section, and the air inlet ends 32 of the two steam joints 25 are connected to form a steam inlet, and external steam is introduced through the steam inlet. In order to facilitate the entry of steam into the steam preheating cavity 28 and the interior of the main shell body (i.e. the inner shell plate 26), the center of the end face of the larger end of the steam joint 25 is provided with a central gas port 33 communicating with the interior of the main shell body, and the edge of the end face is provided with a side gas port 34 communicating with the steam preheating cavity 28.

[0050] In addition, the outer surface of the outer shell plate 27 is also provided with a group of reinforcing rib plates to improve the structural strength of the main shell body. As shown in the figure, the group of reinforcing rib plates includes longitudinal ribs 35 extending along the length direction of the steel mold 0 and transverse ribs 36 extending around the circumference of the steel mold 0, and the transverse ribs 36 and the longitudinal ribs 35 are welded to each other. At the same time, the transverse ribs 36 are arranged in pairs, and a plurality of groups are uniformly distributed in the length direction of the steel mold 0. In this form, as shown in the figure, a centrifugal support plate 37 is arranged between each group of transverse ribs 36, and the centrifugal support plates 37 on the upper mold shell 1 and the lower mold shell 2 together with the transverse ribs 36 form a ring-shaped support groove 38 for connecting the centrifugal device. Figure 9

[0051] ​Of course, in order to facilitate the placement of the sealing disc on the reinforcement cage in the steel mold 0, the inner shell plate 26 is provided with a ring groove on the inner wall surface near both ends for the placement of the sealing disc on the reinforcement cage. The sealing disc is placed in the ring groove, and after the upper and lower mold shells are closed, a stable structure is formed. The steam preheating structure of the present application is a jacket type, with a steam connector 25 provided at one end of the steel mold 0, and the other end designed conventionally, which can directly serve as a port for the pump pipe to extend into, for the pump pipe to be inserted for concrete pouring.

[0052] The present application adopts a double-layer design, which not only ensures the introduction of steam during the centrifugal distribution stage and realizes the closure of the steam preheating cavity 28. At the same time, in order to reduce the influence 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, the present application can also be better. The circumferential surface of the main shell is uniformly provided with a plurality of outwardly protruding disc-shaped protrusions 39, the side wall of the protrusion 39 is provided with a first air passage 40, and the protrusion 39 is provided with a sealing assembly. The sealing assembly can close the first air passage 40 under the action of centrifugal force, realizing the isolation of the steam preheating cavity 28 from the outside world, and can also open the first air passage 40 in a natural state, realizing the communication between the steam preheating cavity 28 and the outside world.

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

[0054] In addition, considering the need for a reserved connecting hole (the connecting hole is used for connecting with the cross arm, or installing other accessories on the cement pole) of part of the steel mold 0, a plurality of bolt holes 44 for placing embedded bolts are also provided on the circumferential surface of the main shell, and the bolt holes 44 penetrate the inner shell plate 26 and the outer shell plate 27 of the main shell.

Claims

1. A quick locking structure of a cement pole concrete forming mold, comprising a steel mold (0) composed of an upper mold shell (1) and a lower mold shell (2); The upper die shell (1) and the lower die shell (2) are provided with connecting edges (3) on the edges of both sides for mutual buckling, characterized in that: A locking mechanism and a locking plug (4) for cooperating with the locking mechanism are arranged at the connecting edge (3); the locking mechanism comprises a rod hole (5) extending along the length direction of the steel mold (0) for inserting the locking plug (4); the locking plug (4) is inserted into the rod hole (5) from the end of the steel mold (0); the locking mechanism forms locking of the upper mold shell (1) and the lower mold shell (2); the locking plug (4) is extracted, and the locking mechanism forms unlocking of the upper mold shell (1) and the lower mold shell (2); The locking mechanism comprises a plurality of connecting ears (6) and ear grooves (7) arranged on the connecting edge (3) of the upper mold shell (1) and the lower mold shell (2) respectively and distributed along the length direction of the connecting edge (3) of the steel mold (0); the connecting ear (6) is provided with a through hole (8) matched with the locking plug (4); the rod hole (5) is arranged on the connecting edge (3) and penetrates the ear groove (7); the connecting ear (6) is inserted into the ear groove (7), and the locking plug (4) passes through the through hole (8) on the connecting ear (6) to form locking of the upper mold shell (1) and the lower mold shell (2); The locking mechanism comprises a plurality of locking claws (9) arranged on the connecting edge (3); the middle section of the locking claw (9) is hinged to a 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; a first vertical hole (11) and a second vertical hole (12) are further arranged 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); a rod hole (5) is arranged on the connecting edge (3) away from the hinge seat (10); the rod hole (5) penetrates the second vertical hole (12); a driving rod (13) capable of sliding vertically is further arranged in the first vertical hole (11) and the second vertical hole (12); one end of the driving rod (13) is connected with the driving end of the locking claw (9), and the other end extends into the rod hole (5); when the locking plug (4) is inserted into the rod hole (5), the driving rod (13) can be lifted, and the driving rod (13) drives the locking claw (9) to swing around the hinge seat (10) to press the connecting edge (3) of the upper mold shell (1) and the lower mold shell (2) by the hook end of the locking claw (9); The locking claw (9) comprises two claw plates (20) arranged side by side, and a reinforcing strip (21) is arranged between the two claw plates (20); the driving rod (13) is connected with the driving end of the locking claw (9) through a short connecting rod (22); a hinge pin (23) is arranged between the claw plates (20) of the driving end of the locking claw (9); one end of the short connecting rod (22) is sleeved outside the hinge pin (23) and hinged with the driving end of the locking claw (9); the other end is hinged with the driving rod (13).

2. The quick locking structure of a concrete forming mold for a cement pole according to claim 1, wherein: The first vertical hole (11) is provided with a guide cap (14) at one end of the locking claw (9), the end of the guide cap (14) is inserted into the first vertical hole (11) and threadedly cooperates with the first vertical hole (11); the driving rod (13) passes through the guide cap (14) and slidably cooperates with the guide cap (14); one end of the driving rod (13) located in the first vertical hole (11) is provided with a variable-diameter disc (15) matched with the first vertical hole (11), and the driving rod (13) between the variable-diameter disc (15) and the guide cap (14) is externally provided with a reset spring (16) fixedly connected with the variable-diameter disc (15) and the guide cap (14) at two ends.

3. The quick locking structure of a concrete forming mold for a cement pole according to claim 2, wherein: The one end of the driving rod (13) located in the rod hole (5) is semispherical, the rod hole (5) is a circular hole, and the locking plug rod (4) is a circular rod with a semispherical end matched with the rod hole (5).

4. The quick locking structure of a concrete forming mold for a cement pole according to claim 2, wherein: The one end of the driving rod (13) located in the rod hole (5) is semispherical, the rod hole (5) is a square hole, and the locking plug rod (4) is a square rod matched with the rod hole (5); the top surface of the locking plug rod (4) is provided with a pushing groove (17) extending along the length direction of the locking plug rod (4), the groove bottom of the pushing groove (17) is arc-shaped, and the depth of the pushing groove (17) gradually decreases from the front end to the rear end of the locking plug 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) and extending out of the rod hole (5) is matched with the depth variation of the pushing groove (17).

5. The quick locking structure of a concrete forming mold for a cement pole according to claim 4, wherein: The front end of the locking plug 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) rotationally matched with the connecting edge (3), and the locking nut (19) is threadedly matched with the short stud (18).

6. The quick locking structure of a concrete forming mold for a cement pole according to claim 5, wherein: The locking claws (9) located on both sides of the steel die (0) are located on the upper die shell (1) and the lower die shell (2) respectively.

7. The quick locking structure of a concrete forming mold for a cement pole according to claim 6, wherein: Opposite positions of the two claw plates (20) of the hook end of the locking claw (9) are provided with detection holes (24), and after the locking claw (9) locks the upper die shell (1) and the lower die shell (2), the detection holes (24) on all the locking claws (9) are located on the same straight line.

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