A drying device and method for producing partially prestressed concrete poles

Abstract

The present invention relates to the technical field of pole drying equipment, and in particular to a drying device for producing partially prestressed concrete poles, comprising a frame, a heating furnace, a conveying assembly and a blocking assembly, wherein the blocking assembly comprises two isolation chambers, which are respectively arranged at the inlet and outlet of the heating furnace, and the two isolation chambers can be opened to seal the heating chamber in the middle of the heating furnace, and the inlet and outlet of the isolation chamber are respectively rotatably installed with a first sealing door and a second sealing door, and a control assembly is connected between the first sealing door and the second sealing door; a method for using a drying device for producing partially prestressed concrete poles, comprising: S1: connecting external high-temperature steam to the inside of the heating furnace; S2: placing a mold with the pole to be dried on the conveying assembly; S3: connecting the output shaft of an external motor to the conveying assembly to provide power. The present invention can effectively reduce heat loss when loading poles.

Description

Technical Field

[0001] The invention relates to the technical field of pole drying equipment, and in particular to a drying device and method for producing a partially prestressed concrete pole. Background Art

[0002] Concrete poles are an important part of the power system, used to support overhead transmission lines and outdoor structures of substations. They are usually made of concrete and steel bars or steel wires, and have two types: prestressed and non-prestressed. Prestressed poles are a type of concrete pole in which prestress is applied to the steel bars during the production process, and then concrete is poured. The prestress is released after the concrete solidifies and reaches a certain strength, giving the poles higher strength and crack resistance. However, this type of pole is more expensive, so partially prestressed poles are used in most scenarios. In comparison, partially prestressed poles combine the advantages of prestressed and non-prestressed poles in their design, and increase the crack resistance and strength of the poles by increasing the amount of steel bars, thereby saving the use of steel to a certain extent.

[0003] In the production process of some prestressed poles, in order to speed up production efficiency, a drying device is generally used to heat the poles so that the moisture inside them can evaporate quickly. At present, most conventional drying devices are a heating furnace with a heating chamber. When in use, the mold together with the pole inside the mold is placed in the heating chamber. By absorbing the heat inside the heating chamber, the moisture in the pole in the mold is evaporated and formed.

[0004] However, the above drying device still has certain defects when used, namely:

[0005] When the mold and its internal electric rod are placed into the heating furnace and taken out from the heating furnace, in order to facilitate the operation of the crane or manipulator, the furnace door of the heating furnace needs to be fully opened, which will cause the heat inside the heating furnace to be lost quickly. In this way, a large amount of heat needs to be generated inside the heating furnace each time drying is carried out, which is undoubtedly a great waste of energy. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a drying device and method for producing partially prestressed concrete poles.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a drying device for the production of partially prestressed concrete poles, comprising a frame, a heating furnace, a conveying assembly and a sealing assembly. The heating furnace is installed in the middle and upper part of the frame, and the heating furnace can be connected to external high-temperature steam. The conveying assembly is installed in the middle of the frame, and the pole is conveyed into the heating furnace and output from the other end of the heating furnace through the conveying assembly. The sealing assembly includes two isolation chambers, which are respectively arranged at the inlet and outlet of the heating furnace, and the two isolation chambers can be opened to close the heating chamber in the middle of the heating furnace. The inlet and outlet of the isolation chamber are respectively rotatably installed with a first sealing door and a second sealing door. A control assembly is connected between the first sealing door and the second sealing door, and under the action of the control assembly, when the first sealing door is opened, the second sealing door will automatically close, and when the first sealing door is closed, the second sealing door will automatically open.

[0008] As a preferred technical solution of the present invention, the second sealing door of the isolation chamber located at the inlet of the heating furnace is close to the middle of the heating furnace, and the second sealing door of the isolation chamber located at the outlet of the heating furnace is far away from the middle of the heating furnace.

[0009] As a preferred technical solution of the present invention, the control component includes a first torsion spring, a first load-bearing shaft, a limit assembly and a transmission assembly. The first load-bearing shaft is rotatably installed on the side of the heating furnace, the transmission assembly is installed between the first load-bearing shaft and the rotating shaft of the second sealing door, the first torsion spring is installed between the first load-bearing shaft and the heating furnace, the limit assembly is connected between the first sealing door rotating shaft and the first load-bearing shaft, and the limit assembly can limit the rotation of the first load-bearing shaft. When the first sealing door is rotated to open, the limit assembly can release the limit on the first load-bearing shaft, and when the first sealing door is rotated to close, the limit assembly can be reset.

[0010] As a preferred technical solution of the present invention, the limiting assembly includes a first ratchet, a first pawl, a second torsion spring, a trigger assembly and a reset assembly. The first ratchet is fixedly mounted on the first load-bearing shaft, the first pawl is rotatably mounted on the side of the heating furnace, the second torsion spring is mounted on the rotating shaft of the first pawl, and the first pawl is engaged with the first ratchet under the action of the second torsion spring. The trigger assembly is connected between the first pawl and the rotating shaft of the first sealing door, and when the first sealing door is opened, the first pawl can be driven to separate from the first ratchet by the trigger assembly. The reset assembly is connected to the trigger assembly, and when the first sealing door is closed, the trigger assembly can be reset by the reset assembly.

[0011] As a preferred technical solution of the present invention, the trigger assembly includes a connecting rod and a shift rod, the connecting rod is fixedly mounted on the rotating shaft of the first sealing door, the shift rod is fixedly mounted on the connecting rod, and when the first sealing door rotates, the first pawl can be driven to separate from the first ratchet wheel through the connecting rod and the shift rod.

[0012] As a preferred technical solution of the present invention, the lever includes a sleeve rod, a telescopic rod and a compression spring. The sleeve rod is fixed to the connecting rod, the telescopic rod is slidably installed on the end of the sleeve rod, and the telescopic rod is released from the first pawl. The compression spring is connected between the telescopic rod and the sleeve rod, and the end of the telescopic rod is wedge-shaped.

[0013] As a preferred technical solution of the present invention, the reset assembly includes a ring gear, a reversing gear, a transmission gear, a second bearing shaft, a second ratchet and a second pawl. The second bearing shaft is rotatably mounted on the side of the heating furnace, the second ratchet is fixedly mounted on the second bearing shaft, and the second bearing shaft is coaxial with the rotating shaft of the first sealing door. A driving disk is fixedly mounted on the rotating shaft of the first sealing door, the second ratchet is rotatably mounted on the driving disk, a third torsion spring is mounted on the rotating shaft of the second ratchet, and the second pawl is engaged with the second ratchet under the action of the third torsion spring. At the same time, when the first sealing door rotates in the closing direction, the second ratchet can be driven to rotate by the driving disk and the second ratchet. The ring gear is fixedly mounted on the second ratchet, the reversing gear is rotatably mounted on the side of the heating furnace, and the reversing gear is internally meshed with the ring gear, and the transmission gear is fixedly mounted on the first bearing shaft, and the transmission gear is externally meshed with the reversing gear.

[0014] As a preferred technical solution of the present invention, the transmission assembly includes a pulley and a synchronous belt. There are two pulleys, which are respectively fixedly mounted on the first load-bearing shaft and the second door-sealing shaft. At the same time, the two pulleys realize transmission through the synchronous belt.

[0015] As a preferred technical solution of the present invention, the conveying assembly includes a chain, a sprocket, a bracket, a bearing platform, a bearing roller, a driving gear and a rack. There are two groups of sprockets, and the two groups of sprockets are distributed at both ends of the frame. The two groups of sprockets are driven by chains. The bracket is fixedly mounted on the inner side of the frame, and the chain is mounted on the bracket. There are multiple bearing platforms, which are evenly distributed around the chain, and the two ends of each bearing platform are respectively fixedly connected to a link of the chain at a corresponding position. Two bearing rollers are rotatably mounted on the surface of each bearing platform, and are symmetrically distributed on the left and right. The mold with the electric pole can be rotatably mounted between the two bearing rollers. The driving gear is fixedly mounted on a bearing roller shaft of the bearing platform, and the rack is fixedly mounted on the inner wall of the heating furnace. After the bearing platform enters the interior of the heating furnace, the driving gear can engage with the rack.

[0016] According to another aspect of the present invention, the present invention further provides a method for using a drying device for producing a partially prestressed concrete pole. Based on the above-mentioned drying device for producing a partially prestressed concrete pole, the method comprises:

[0017] S1: connecting the external high-temperature steam to the interior of the heating furnace 2;

[0018] S2: placing the mold containing the pole to be dried on the conveying assembly;

[0019] S3: Connect the external motor output shaft to the conveying assembly to provide power.

[0020] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0021] 1. During the entire use process, the electric poles that need to be dried are sent into the heating furnace for drying through the conveying assembly. In this process, when the electric pole enters the heating furnace, the first sealing door will be pushed open first, and then under the action of the control assembly, the second sealing door will be quickly closed to isolate the isolation cavity from the main heating area in the middle of the heating furnace. After that, when the electric pole is completely in the isolation area, the second sealing door will be opened and the first sealing door will be closed under the action of the control assembly, and when going out of the heating furnace, the first sealing door on the other side will be pushed open to enter the isolation cavity. After entering, the first sealing door will be closed to block the isolation cavity, and the second sealing door will be opened to allow the electric pole to flow out smoothly. In this way, the heat loss inside the heating furnace can be greatly reduced, which plays a role in saving energy.

[0022] 2. The internal heat of the isolation chamber will be lower than that of the middle of the heating furnace due to frequent opening and closing. In this way, the pole will be preheated when passing through the isolation chamber, thereby avoiding the pole from being suddenly overheated and causing rapid loss of moisture and causing quality defects, further ensuring the drying quality of the pole.

[0023] 3. During use, the electric pole is moved into the heating furnace by the conveying assembly. In this process, the electric pole is driven by the driving gear and rack inside the conveying assembly in the heating furnace, and also rotates inside the heating furnace, so that it can be heated more evenly, further ensuring the drying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0026] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the heating furnace of the present invention from a first viewing angle;

[0028] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0029] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B1 in the middle;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the heating furnace of the present invention from a second viewing angle;

[0031] Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle;

[0032] Fig. 9 A schematic diagram of the third perspective of the three-dimensional structure of the heating furnace of the present invention;

[0033] Fig.10 For the present invention Fig. 9 The structure diagram at D is enlarged;

[0034] Fig.11 A schematic diagram of a fourth perspective view of the three-dimensional structure of the heating furnace of the present invention;

[0035] Fig.12 For the present invention Fig.11 The enlarged structural diagram at E in the middle;

[0036] Fig.13 For the present invention Fig.12 Enlarged structural diagram of E1 in the figure.

[0037] Wherein: 1. frame; 2. heating furnace; 3. isolation chamber; 4. first sealing door; 5. second sealing door; 6. first torsion spring; 7. first bearing shaft; 8. first ratchet; 9. first pawl; 10. second torsion spring; 11. second bearing shaft; 12. connecting rod; 13. shift rod; 1301. sleeve rod; 1302. telescopic rod; 1303. compression spring; 14. gear ring; 15. reversing gear; 16. transmission gear; 17. second ratchet; 18. second pawl; 19. driving disk; 20. pulley; 21. synchronous belt; 22. chain; 23. sprocket; 24. bracket; 25. bearing platform; 26. bearing roller; 27. driving gear; 28. rack. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0039] Embodiment: Figure 1-13As shown, a drying device for producing partially prestressed concrete poles includes a frame 1, a heating furnace 2, a conveying assembly and a sealing assembly. The heating furnace 2 is installed in the middle and upper part of the frame 1, and the heating furnace 2 can be connected to external high-temperature steam. The conveying assembly is installed in the middle of the frame 1, and the pole is conveyed to the heating furnace 2 and output from the other end of the heating furnace 2 through the conveying assembly. The sealing assembly includes two isolation chambers 3, which are respectively arranged at the inlet and outlet of the heating furnace 2, and the two isolation chambers 3 can be opened to close the heating chamber in the middle of the heating furnace 2. The inlet and outlet of the isolation chamber 3 are respectively rotatably installed with a first sealing door 4 and a second sealing door 5. A control assembly is connected between the first sealing door 4 and the second sealing door 5, and under the action of the control assembly, when the first sealing door 4 is opened, the second sealing door 5 will be automatically closed, and when the first sealing door 4 is closed, the second sealing door 5 will be automatically opened.

[0040] When in use, the electric pole to be dried can be sent into the heating furnace 2 for drying through the conveying component. In this process, when the electric pole enters the heating furnace 2, the first sealing door 4 will be pushed open first, and then under the action of the control component, the second sealing door 5 will be quickly closed to isolate the isolation chamber 3 from the main heating area in the middle of the heating furnace 2. After that, when the electric pole is completely in the isolation area, the second sealing door 5 will be opened and the first sealing door 4 will be closed under the action of the control component, and when going out of the heating furnace 2, the first sealing door 4 on the other side will be pushed open to enter the isolation chamber 3. After entering, the first sealing door 4 will be closed to block the isolation chamber 3, and the second sealing door 5 will be opened, so that the electric pole can flow out smoothly. In this way, the heat loss inside the heating furnace 2 can be greatly reduced, which plays a role in saving energy.

[0041] The second sealing door 5 of the isolation chamber 3 located at the entrance of the heating furnace 2 is close to the middle of the heating furnace 2, and the second sealing door 5 of the isolation chamber 3 located at the exit of the heating furnace 2 is far away from the middle of the heating furnace 2. In this way, it can be ensured that the supporting platform 25 always pushes open the first sealing door 4 first and then pushes open the second sealing door 5.

[0042] The control component includes a first torsion spring 6, a first bearing shaft 7, a limit assembly and a transmission assembly. The first bearing shaft 7 is rotatably installed on the side of the heating furnace 2, the transmission assembly is installed between the first bearing shaft 7 and the rotating shaft of the second sealing door 5, the first torsion spring 6 is installed between the first bearing shaft 7 and the heating furnace 2, the limit assembly is connected between the rotating shaft of the first sealing door 4 and the first bearing shaft 7, and the limit assembly can limit the rotation of the first bearing shaft 7, when the first sealing door 4 is rotated to open, the limit assembly on the first bearing shaft 7 can be released, and when the first sealing door 4 is rotated to close, the limit assembly can be reset.

[0043] In this way, when the electric pole pushes open the first sealing door 4, the restriction of the limiting assembly on the first bearing shaft 7 can be released, so that the first bearing shaft 7 can rotate under the action of the first torsion spring 6, thereby driving the second sealing door 5 to close through the transmission assembly.

[0044] The limiting assembly includes a first ratchet 8, a first pawl 9, a second torsion spring 10, a trigger assembly and a reset assembly. The first ratchet 8 is fixedly mounted on the first bearing shaft 7, the first pawl 9 is rotatably mounted on the side of the heating furnace 2, the second torsion spring 10 is mounted on the rotating shaft of the first pawl 9, and the first pawl 9 is engaged with the first ratchet 8 under the action of the second torsion spring 10. The trigger assembly is connected between the first pawl 9 and the rotating shaft of the first sealing door 4, and when the first sealing door 4 is opened, the first pawl 9 can be driven to separate from the first ratchet 8 by the trigger assembly. The reset assembly is connected to the trigger assembly, and when the first sealing door 4 is closed, the trigger assembly can be reset by the reset assembly.

[0045] In this way, the first pawl 9 is separated from the first ratchet 8 by the trigger assembly, and the first bearing shaft 7 can rotate under the action of the first torsion spring 6. After the bearing platform 25 completely enters the isolation cavity 3, it can be reset by the reset assembly, thereby realizing continuous pole drying.

[0046] The trigger assembly includes a connecting rod 12 and a lever 13. The connecting rod 12 is fixedly mounted on the rotating shaft of the first sealing door 4. The lever 13 is fixedly mounted on the connecting rod 12. When the first sealing door 4 rotates, the first pawl 9 can be driven to separate from the first ratchet wheel 8 through the connecting rod 12 and the lever 13.

[0047] In this way, as long as the first sealing door 4 rotates toward the inside of the heating furnace 2 , the connecting rod 12 and the shifting rod 13 can be driven to rotate synchronously, and the shifting rod 13 will push the first pawl 9 to separate it from the first ratchet wheel 8 .

[0048] The lever 13 includes a sleeve rod 1301, a telescopic rod 1302 and a compression spring 1303. The sleeve rod 1301 is fixed to the connecting rod 12, the telescopic rod 1302 is slidably installed at the end of the sleeve rod 1301, and the telescopic rod 1302 is released from the first pawl 9. The compression spring 1303 is connected between the telescopic rod 1302 and the sleeve rod 1301, and the end of the telescopic rod 1302 is wedge-shaped.

[0049] In this way, when the first sealing door 4 is reset to the closing direction, the wedge-shaped end of the telescopic rod 1302 will be retracted into the sleeve rod 1301 due to the axial force when it contacts the first pawl 9, so that the entire lever 13 can slide over the surface of the first pawl 9 and extend again after sliding over the surface of the first pawl 9 to drive the first pawl 9 to rotate next time.

[0050] The reset assembly includes a ring gear 14, a reversing gear 15, a transmission gear 16, a second bearing shaft 11, a second ratchet 17 and a second pawl 18. The second bearing shaft 11 is rotatably mounted on the side of the heating furnace 2, the second ratchet 17 is fixedly mounted on the second bearing shaft 11, and the second bearing shaft 11 is coaxial with the rotating shaft of the first sealing door 4. A driving disk 19 is fixedly mounted on the rotating shaft of the first sealing door 4, the second pawl 18 is rotatably mounted on the driving disk 19, a third torsion spring is mounted on the rotating shaft of the second pawl 18, and the second pawl 18 is engaged with the second ratchet 17 under the action of the third torsion spring. At the same time, when the first sealing door 4 rotates in the closing direction, the second ratchet 17 can be driven to rotate by the driving disk 19 and the second pawl 18. The ring gear 14 is fixedly mounted on the second ratchet 17, the reversing gear 15 is rotatably mounted on the side of the heating furnace 2, and the reversing gear 15 is internally meshed with the ring gear 14, the transmission gear 16 is fixedly mounted on the first bearing shaft 7, and the transmission gear 16 is externally meshed with the reversing gear 15.

[0051] In this way, when the first sealing door 4 rotates in the closing direction, it will drive the driving disk 19 to rotate. The rotation of the driving disk 19 will drive the second ratchet 17 to rotate through the second pawl 18, and then drive the ring gear 14 to rotate. The ring gear 14 will drive the reversing gear 15 to rotate in the same direction. The reversing gear 15 will drive the transmission gear 16 to rotate in the opposite direction. The transmission gear 16 will drive the first bearing shaft 7 to rotate, so that the second sealing door 5 at the rear end is opened first, which is convenient for the heat inside the heating furnace 2 to enter the isolation chamber 3 in advance to preheat the pole, effectively ensuring the drying quality, and in this process, the rotating shaft of the first sealing door 4 will drive the connecting rod 12 and the lever 13 to reset, so as to re-limit the first pawl 9. In this way, the first torsion spring 6 can be tightened to facilitate the entry of the next bearing platform 25.

[0052] The transmission assembly includes a pulley 20 and a synchronous belt 21. There are two pulleys 20, which are respectively fixedly mounted on the rotating shafts of the first load-bearing shaft 7 and the second sealing door 5. At the same time, the two pulleys 20 are transmitted through the synchronous belt 21, so that the first load-bearing shaft 7 and the second sealing door 5 will keep rotating synchronously.

[0053] The conveying assembly includes a chain 22, a sprocket 23, a bracket 24, a bearing platform 25, a bearing roller 26, a driving gear 27 and a rack 28. There are two groups of sprockets 23, and the two groups of sprockets 23 are distributed at both ends of the frame 1. The two groups of sprockets 23 are driven by the chain 22. The bracket 24 is fixedly installed on the inner side of the frame 1, and the bracket 24 seals the bottom of the heating furnace 2. The chain 22 is mounted on the bracket 24. There are multiple bearing platforms 25, which are evenly distributed around the chain 22, and each bearing platform 25 is uniformly distributed around the chain 22. The two ends of the platform 25 are respectively fixedly connected to a link of the chain 22 at the corresponding position. Two bearing rollers 26 are rotatably installed on the surface of each bearing platform 25, and are symmetrically distributed on the left and right. The mold equipped with the electric pole can be rotatably mounted between the two bearing rollers 26. The driving gear 27 is fixedly installed on the rotating shaft of a bearing roller 26 of the bearing platform 25, and the rack 28 is fixedly installed on the inner wall of the heating furnace 2. After the bearing platform 25 enters the interior of the heating furnace 2, the driving gear 27 can engage with the rack 28.

[0054] In this way, it is only necessary to connect the external motor to the rotating shaft of the sprocket 23 and drive it to rotate. At this time, the rotation of the sprocket 23 can drive the chain 22 to rotate, and the rotation of the chain 22 will drive the carrier 25 to move, thereby bringing the carrier 25 together with the mold above into the heating furnace 2, and after the carrier 25 enters the heating furnace 2, the driving gear 27 will also engage with the rack 28. In this way, when the carrier 25 moves inside the heating furnace 2, the driving gear 27 will rotate, thereby rotating the bearing roller 26, and the bearing roller 26 will drive the mold with the electric pole to rotate, so that the electric pole can be heated more evenly.

[0055] Working principle: When in use, firstly, external high-temperature steam is passed into the heating furnace 2, and then the mold with the electric pole to be dried is placed between the two bearing rollers 26 of the bearing platform 25, and then the external motor is connected to the rotating shaft of the sprocket 23 and driven to rotate. At this time, the rotation of the sprocket 23 can drive the chain 22 to rotate, and the rotation of the chain 22 will drive the bearing platform 25 to move, so that the bearing platform 25 together with the mold above it will be brought into the heating furnace 2. In this process, the bearing platform 25 together with the mold above it will first push open the first sealing door 4 of the isolation chamber 3 at the entrance of the heating furnace 2, and the first sealing door 4 will rotate, thereby driving the connecting rod 12 and the lever 13 to rotate, and the lever 13 will drive the first ratchet 9 to rotate, so that it is in contact with the first ratchet. 8 disengages, at this time, the first ratchet 8 loses its limit, and under the action of the first torsion spring 6, the first bearing shaft 7 will rotate, thereby driving the second sealing door 5 to rotate through the pulley 20 and the synchronous belt 21 to close the entrance of the heating furnace 2, and as the bearing platform 25 continues to move, when the bearing platform 25 completely enters the isolation chamber, at this time, the first sealing door 4 will rotate to the closed state again under the action of its own gravity, and then the bearing platform 25 continues to move, and will push open the second sealing door 5 again to reach the inside of the heating furnace 2 to absorb the heat of the high-temperature steam to achieve drying, and then the bearing platform 25 continues to move, and will push open the first sealing door 4 and the second sealing door 5 of the isolation chamber 3 at the outlet of the heating furnace 2 until they completely flow out, thus completing the entire drying process.

[0056] Among them, when the first sealing door 4 is closed under the action of its own gravity, the rotation of the first sealing door 4 will drive the driving disk 19 to rotate, and the rotation of the driving disk 19 will drive the second ratchet 17 to rotate through the second pawl 18, and then drive the ring gear 14 to rotate, and the ring gear 14 will drive the reversing gear 15 to rotate in the same direction, and the reversing gear 15 will drive the transmission gear 16 to rotate in the opposite direction, and the transmission gear 16 will drive the first bearing shaft 7 to rotate, so that the second sealing door 5 at the rear end is opened first, which is convenient for the heat inside the heating furnace 2 to enter the isolation chamber 3 in advance to preheat the pole, effectively ensuring the drying quality, and in this process, the rotating shaft of the first sealing door 4 will drive the connecting rod 12 and the lever 13 to reset, to re-limit the first pawl 9, so that the first torsion spring 6 can be tightened to facilitate the entry of the next bearing platform 25.

[0057] In addition, the supporting platform 25 itself will also push open the second sealing door 5, and the second sealing door 5 can also drive the first supporting shaft 7 to reverse through the pulley 20 and the synchronous belt 21, thereby driving the first ratchet 8 to reverse, which will also re-tighten the first torsion spring 6 and maintain the torque of the first torsion spring 6 under the action of the first pawl 9, thereby facilitating the entry of the next supporting platform 25.

[0058] Moreover, after the supporting platform 25 enters the heating furnace 2, the driving gear 27 will also mesh with the rack 28. In this way, when the supporting platform 25 moves inside the heating furnace 2, the driving gear 27 will rotate, thereby rotating the supporting roller 26, and the supporting roller 26 will drive the mold with the electric pole to rotate, so that the electric pole can be heated more evenly.

[0059] To sum up, during the entire use process, the electric pole to be dried is delivered to the heating furnace 2 for drying through the conveying component. During this process, when the electric pole enters the heating furnace 2, the first sealing door 4 will be pushed open first, and then under the action of the control component, the second sealing door 5 will be quickly closed to isolate the isolation chamber 3 from the main heating area in the middle of the heating furnace 2. After that, when the electric pole is completely in the isolation area, the second sealing door 5 will be opened and the first sealing door 4 will be closed under the action of the control component, and when going out of the heating furnace 2, the first sealing door 4 on the other side will be pushed open to enter the isolation chamber 3. After entering, the first sealing door 4 will be closed to block the isolation chamber 3, and the second sealing door 5 will be opened, so that the electric pole can flow out smoothly. In this way, the heat loss inside the heating furnace 2 can be greatly reduced, thereby saving energy.

[0060] At the same time, the internal heat of the isolation chamber 3 will be lower than that of the middle of the heating furnace 2 due to the frequent opening and closing. In this way, the pole will be preheated when passing through the isolation chamber 3, thereby avoiding the pole from being suddenly overheated and causing rapid loss of moisture and causing quality defects, further ensuring the drying quality of the pole.

[0061] In addition, during use, the electric pole is moved into the heating furnace 2 by the conveying assembly, and in this process, the electric pole is driven by the driving gear 27 and the rack 28 inside the conveying assembly in the heating furnace 2, and also rotates inside the heating furnace 2, so that it can be heated more evenly, further ensuring the drying quality.

[0062] It should be noted that the weight of the first sealing door 4 is greater than that of the second sealing door 5 , and a counterweight block is also installed at the bottom of the first sealing door 4 .

[0063] The reset process of the lever 13 is as follows: when the lever 13 drives the first pawl 9 to separate from the first ratchet 8, the side of the telescopic rod 1302 away from the wedge surface contacts the first pawl 9. Subsequently, the first sealing door 4 continues to rotate, and the lever 13 will disengage from the first pawl 9. After that, when the first sealing door 4 is closed, the wedge surface of the telescopic rod 1302 will contact the first pawl 9. At this time, the telescopic rod 1302 will be subjected to partial axial force and will retract into the sleeve rod 1301. In this way, the lever 13 can slide over the surface of the first pawl 9 until it reaches the other side of the first pawl 9. After that, the telescopic rod 1302 loses the obstruction of the first pawl 9 and will be reset under the action of the compression spring 1303 until it exceeds the surface of the first pawl 9.

[0064] According to another aspect of the present invention, the present invention further provides a method for using a drying device for producing a partially prestressed concrete pole. Based on the above-mentioned drying device for producing a partially prestressed concrete pole, the method comprises:

[0065] S1: connecting the external high-temperature steam to the interior of the heating furnace 2;

[0066] S2: placing the mold containing the pole to be dried on the conveying assembly;

[0067] S3: Connect the external motor output shaft to the conveying assembly to provide power.

[0068] This method greatly simplifies the operation. It is no longer necessary to load and unload materials at the same position. Materials can be loaded on one side and discharged on the other side, which effectively improves the drying efficiency.

[0069] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A drying device for producing partially prestressed concrete poles, characterized in that: The invention comprises a frame (1), a heating furnace (2), a conveying assembly and a blocking assembly, wherein the heating furnace (2) is installed in the middle and upper part of the frame (1), and the heating furnace (2) can be connected to external high-temperature steam, the conveying assembly is installed in the middle of the frame (1), and the electric pole is conveyed into the heating furnace (2) by the conveying assembly and output from the other end of the heating furnace (2), and the blocking assembly comprises two isolation chambers (3), the two isolation chambers (3) are respectively arranged at the inlet and outlet of the heating furnace (2), and the two isolation chambers (3) can be opened to block the heating chamber in the middle of the heating furnace (2), and the isolation chamber ( A first sealing door (4) and a second sealing door (5) are rotatably mounted at the inlet and outlet of the heating furnace (3), respectively. A control component is connected between the first sealing door (4) and the second sealing door (5). Under the action of the control component, when the first sealing door (4) is opened, the second sealing door (5) will automatically close, and when the first sealing door (4) is closed, the second sealing door (5) will automatically open. The second sealing door (5) of the isolation chamber (3) at the inlet of the heating furnace (2) is close to the middle of the heating furnace (2), and the second sealing door (5) of the isolation chamber (3) at the outlet of the heating furnace (2) is far from the middle of the heating furnace (2).

2. A drying device for producing partially prestressed concrete poles according to claim 1, characterized in that: The control assembly comprises a first torsion spring (6), a first bearing shaft (7), a limit assembly and a transmission assembly. The first bearing shaft (7) is rotatably mounted on a side of the heating furnace (2). The transmission assembly is mounted between the first bearing shaft (7) and a rotating shaft of the second sealing door (5). The first torsion spring (6) is mounted between the first bearing shaft (7) and the heating furnace (2). The limit assembly is connected between the rotating shaft of the first sealing door (4) and the first bearing shaft (7). The limit assembly can limit the rotation of the first bearing shaft (7). When the first sealing door (4) is rotated to open, the limit assembly can release the limit on the first bearing shaft (7). When the first sealing door (4) is rotated to close, the limit assembly can be reset.

3. A drying device for producing partially prestressed concrete poles according to claim 2, characterized in that: The limiting assembly comprises a first ratchet (8), a first pawl (9), a second torsion spring (10), a trigger assembly and a reset assembly, wherein the first ratchet (8) is fixedly mounted on the first bearing shaft (7), the first pawl (9) is rotatably mounted on the side of the heating furnace (2), the second torsion spring (10) is mounted on the rotating shaft of the first pawl (9), and the first pawl (9) is engaged with the first ratchet (8) under the action of the second torsion spring (10), the trigger assembly is connected between the first pawl (9) and the rotating shaft of the first sealing door (4), and when the first sealing door (4) is opened, the first pawl (9) can be driven to separate from the first ratchet (8) by the trigger assembly, and the reset assembly is connected to the trigger assembly, and when the first sealing door (4) is closed, the trigger assembly can be reset by the reset assembly.

4. A drying device for producing partially prestressed concrete poles according to claim 3, characterized in that: The trigger assembly comprises a connecting rod (12) and a shifting rod (13); the connecting rod (12) is fixedly mounted on the rotating shaft of the first sealing door (4); the shifting rod (13) is fixedly mounted on the connecting rod (12); and when the first sealing door (4) rotates, the connecting rod (12) and the shifting rod (13) can drive the first pawl (9) to separate from the first ratchet wheel (8).

5. A drying device for producing partially prestressed concrete poles according to claim 4, characterized in that: The lever (13) comprises a sleeve rod (1301), a telescopic rod (1302) and a compression spring (1303); the sleeve rod (1301) is fixed to the connecting rod (12); the telescopic rod (1302) is slidably mounted on the end of the sleeve rod (1301); the telescopic rod (1302) is released from the first pawl (9); the compression spring (1303) is connected between the telescopic rod (1302) and the sleeve rod (1301); and the end of the telescopic rod (1302) is wedge-shaped.

6. A drying device for producing partially prestressed concrete poles according to any one of claims 2 to 5, characterized in that: The reset assembly comprises a gear ring (14), a reversing gear (15), a transmission gear (16), a second bearing shaft (11), a second ratchet (17) and a second ratchet pawl (18); the second bearing shaft (11) is rotatably mounted on a side of the heating furnace (2); the second ratchet (17) is fixedly mounted on the second bearing shaft (11); and the second bearing shaft (11) is coaxial with the rotating shaft of the first sealing door (4); a driving disk (19) is fixedly mounted on the rotating shaft of the first sealing door (4); the second ratchet pawl (18) is rotatably mounted on the driving disk (19); and the second ratchet pawl (18) is mounted on the rotating shaft. A third torsion spring is provided, and the second pawl (18) is engaged with the second ratchet (17) under the action of the third torsion spring. When the first sealing door (4) rotates in the closing direction, the second ratchet (17) can be driven to rotate through the driving plate (19) and the second pawl (18). The ring gear (14) is fixedly mounted on the second ratchet (17). The reversing gear (15) is rotatably mounted on the side of the heating furnace (2), and the reversing gear (15) is internally meshed with the ring gear (14). The transmission gear (16) is fixedly mounted on the first bearing shaft (7), and the transmission gear (16) is externally meshed with the reversing gear (15).

7. A drying device for producing partially prestressed concrete poles according to claim 2, characterized in that: The transmission assembly comprises a pulley (20) and a synchronous belt (21). There are two pulleys (20), which are respectively fixedly mounted on the first bearing shaft (7) and the rotating shaft of the second sealing door (5). The two pulleys (20) are driven by the synchronous belt (21).

8. A drying device for producing partially prestressed concrete poles according to claim 1, characterized in that: The conveying assembly comprises a chain (22), a sprocket (23), a bracket (24), a bearing platform (25), a bearing roller (26), a driving gear (27) and a rack (28); there are two groups of sprockets (23), and the two groups of sprockets (23) are distributed at both ends of the frame (1); the two groups of sprockets (23) are driven by the chain (22); the bracket (24) is fixedly mounted on the inner side of the frame (1); the chain (22) is mounted on the bracket (24); there are a plurality of bearing platforms (25), which are evenly distributed around the chain (22); and each bearing platform (25) The two ends of the support platform (25) are respectively fixedly connected to a link of the chain (22) at a corresponding position, and two support rollers (26) are rotatably mounted on the surface of each support platform (25), and are symmetrically distributed on the left and right. The mold with the electric pole can be rotatably mounted between the two support rollers (26), and the driving gear (27) is fixedly mounted on the rotating shaft of a support roller (26) of the support platform (25). The rack (28) is fixedly mounted on the inner wall of the heating furnace (2), and after the support platform (25) enters the interior of the heating furnace (2), the driving gear (27) can mesh with the rack (28).

9. A method for using a drying device for producing a partially prestressed concrete pole, based on the drying device for producing a partially prestressed concrete pole as described in claim 1, the method comprising: S1: connecting the external high-temperature steam to the interior of the heating furnace (2); S2: placing the mold containing the pole to be dried on the conveying assembly; S3: Connect the external motor output shaft to the conveying assembly to provide power.

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