Loading and unloading device for hot mold nodular cast iron pipe plug

Abstract

The utility model discloses a loading and unloading device for a hot mold nodular cast iron pipe plug, and belongs to the technical field of mechanical tools. A loading and unloading device for a hot mold nodular cast iron pipe plug comprises a beam frame, a traveling crane span structure is arranged on the beam frame, a pair of lifting arms are arranged on the traveling crane span structure, a toothed bar meshed with a first gear is arranged in a fixing box, and the two ends of the toothed bar penetrate through and extend to the outer side of the fixing box and the outer side of a mounting base respectively. The opposite ends of the pair of toothed bars are each provided with an electromagnetic disc for magnetically attracting the corresponding plug. According to the loading and unloading device for the hot mold nodular cast iron pipe plug, automation and high efficiency of loading and unloading of the plug are achieved through cooperative work of components such as the vehicle beam frame, the vehicle bridge frame and the lifting arm. The traveling crane bridge can flexibly move on the beam frame and can be quickly positioned to different operation positions; the lifting arm can transversely and longitudinally move, the position of the plug is rapidly and accurately adjusted, the plug assembling and disassembling time is greatly shortened, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical tooling technology, and in particular relates to a loading and unloading device for hot-molded ductile iron pipe plugs. Background Technology

[0002] In the production process of large-diameter ductile iron pipes, the lining process is a crucial step, as its quality directly affects the final performance and lifespan of the ductile iron pipe. In the lining process, the socket plug needs to be precisely nested into the socket of the ductile iron pipe and firmly fixed to block the cement mortar and prevent it from being thrown out during the high-speed centrifugal operation of the ductile iron pipe, thereby ensuring the quality of the inner lining.

[0003] However, the fixtures for plugging the sockets of large-diameter ductile iron pipes are typically bulky and heavy. Currently, the industry commonly uses electric hoists and single-beam cranes to assist manual labor in installing these plugs. This traditional method has many drawbacks:

[0004] On the one hand, the efficiency is extremely low. Manual operation requires a lot of time and energy. The installation of each plug requires workers to perform precise positioning, adjustment and fixation. The whole process is cumbersome and slow, which seriously restricts production efficiency and makes it difficult to meet the needs of large-scale production.

[0005] On the other hand, the safety risks are high. Due to the large size and heavy weight of the plug, accidents may occur if care is not taken during hoisting and manual installation, such as injuring workers or damaging equipment, which poses a serious threat to the safety of workers' lives and the safety of the company's property.

[0006] Furthermore, during manual installation, it is difficult to ensure that the plug of the socket can fit tightly against the edge of the socket. Due to the subjectivity and uncertainty of manual operation, it is difficult to achieve precise positioning and firm fixation. This leads to the leakage of cement mortar during the high-speed centrifugation process of ductile iron pipe. The leakage of cement mortar not only affects the service life of the tooling and increases the production cost of the enterprise, but also seriously affects the quality of the inner lining of the socket of ductile iron pipe, resulting in defects such as damage to the inner lining at the edge of the socket and uneven thickness, thus reducing the overall quality of ductile iron pipe. Summary of the Invention

[0007] The purpose of this invention is to address the problems existing in the prior art by providing a device for loading and unloading hot-molded ductile iron pipe plugs.

[0008] To achieve the above objectives, the utility model employs the following technical solution: a loading and unloading device for hot-molded ductile iron pipe plugs, comprising a vehicle beam frame, a traveling bridge frame on the vehicle beam frame, a pair of lifting arms on the traveling bridge frame, mounting seats at the lower ends of the pair of lifting arms, and fixed boxes mounted on opposite sides of the pair of mounting seats, a first motor mounted on the fixed box, a first gear mounted on the output end of the first motor, a rack meshing with the first gear inside the fixed box, the two ends of the rack penetrating and extending to the outside of the fixed box and the mounting seats, magnetic disks for magnetically attracting the plugs mounted on opposite ends of the pair of racks, a second motor mounted on opposite sides of the pair of mounting seats, and a hook mounted on the output end of the second motor, wherein the ductile iron pipe is rotated at high speed by a driving component.

[0009] By adopting the above technical solution, the loading and unloading of hot-molded ductile iron pipe plugs is automated and efficient. The vehicle frame provides stable support for the entire device, and the traveling bridge can move flexibly on it, thereby quickly positioning the device to different working positions. A pair of lifting arms support the fixing box and other components through the mounting base. The first motor drives the first gear to move the rack, enabling the electromagnet to extend and retract precisely, thus stably gripping the plug and ensuring reliable fixation of the plug during loading and unloading. At the same time, the second motor drives the hook to rotate, providing additional auxiliary means for fixing the plug, increasing the flexibility and safety of operation. The cast iron pipe rotates at high speed through the driving components, meeting the process requirements of the production process. The coordinated work of all components of the overall device greatly improves the efficiency and quality of plug loading and unloading, effectively solving the problems of low efficiency, high safety risks, and poor installation accuracy of traditional manual operation.

[0010] Optionally, the vehicle frame includes a steel structure column and a traveling beam installed on the steel structure column. The steel structure is connected to the ground by bolts, and the traveling beam is welded to the top of the steel structure column. A first track for the traveling bridge to move is installed on the upper surface of the traveling beam, and the first track is adapted to the bottom of the traveling bridge.

[0011] By adopting the above technical solutions, the structural design of the vehicle beam frame ensures the overall stability and reliability of the device. The steel structure column serves as the main supporting structure and is firmly connected to the ground with bolts, making installation convenient and the connection stable. This provides a solid installation foundation for components such as the overhead crane frame. The first track installed on the upper surface of the overhead crane beam is compatible with the bottom of the overhead crane frame, providing precise guidance for the longitudinal movement of the overhead crane frame. This allows the overhead crane frame to move smoothly and accurately along the track, reducing swaying and deviation during movement and improving the operating accuracy and work efficiency of the device.

[0012] Optionally, the overhead crane includes a pair of end beams connected to the overhead crane, a main beam is provided between the pair of end beams, a second track is provided on the main beam for the pair of lifting arms to move, and a first traveling device is provided on the end beam for the overhead crane to move longitudinally along the overhead crane beam.

[0013] By adopting the above technical solution, the overhead crane bridge has a reasonable structural design and complete functions. A pair of end beams provide frame support for the entire overhead crane bridge, ensuring the overall structural stability of the bridge. The main beam is set between the pair of end beams, providing a platform for the installation and movement of the lifting arms on the main beam. A second track on the main beam allows the lifting arms to move laterally on the main beam, further expanding the operating range of the device and adapting to the loading and unloading needs of plugs in different positions. The first traveling device on the end beam provides power and drive for the longitudinal movement of the overhead crane bridge along the overhead beam. Through the precise control of the first traveling device, the overhead crane bridge can move flexibly on the beam frame according to the operation requirements, improving the spatial mobility of the device and facilitating the loading and unloading of plugs at different workstations, thereby improving production efficiency.

[0014] Optionally, each of the pair of lifting arms is provided with a second traveling device, the second traveling device being used to move the lifting arm laterally along the main beam, and the lifting arm is provided with a transmission device, the transmission device being used to raise and lower the lifting arm longitudinally along the main beam.

[0015] By adopting the above technical solution, the structural design of the lifting arm enables its flexible movement and operation in space. The second traveling device installed on the lifting arm allows it to move laterally along the main beam. This design increases the horizontal operational flexibility of the lifting arm, enabling quick and accurate adjustment of the plug's horizontal position to meet the loading and unloading needs of ductile iron pipe plugs of different sizes and locations.

[0016] Optionally, the first traveling device and the second traveling device each include rollers and drive motors for driving the rollers to rotate. The rollers and drive motors on the first traveling device are respectively mounted on the bottom of the end beam, and the rollers on the first traveling device cooperate with the vehicle beam frame. The rollers and drive motors on the second traveling device are respectively mounted on the lifting arm, and the rollers on the second traveling device cooperate with the second track.

[0017] By adopting the above technical solutions, the first and second traveling devices have simple and reliable structural designs, providing stable and efficient power support for the movement of the devices. Both adopt a structure of rollers and drive motors that drive the rollers to rotate. The drive motors can provide stable power output to the rollers, enabling the rollers to drive the corresponding components to move.

[0018] Optionally, the transmission device includes a mounting base installed on the outer periphery of the lifting arm and connected to the second traveling device. The mounting base is provided with a transmission motor, and the output end of the transmission motor is equipped with a second gear. The lifting arm is provided with a rack plate that meshes with the second gear.

[0019] By adopting the above technical solution, the transmission device features an ingenious and practical structural design, achieving precise lifting control of the lifting arm. The mounting base, installed on the outer periphery of the lifting arm and connected to the second traveling device, provides a stable mounting platform for the drive motor, ensuring its stability during operation.

[0020] Optionally, the driving component includes a pair of third motors mounted on the workstation and a stop wheel for limiting the cast iron pipe. The output ends of the pair of third motors are respectively equipped with support rollers for supporting the cast iron pipe, and the stop wheels are symmetrically arranged on both sides of the cast iron pipe.

[0021] By adopting the above technical solution, the structural design of the drive component is reasonable and effective, meeting the rotation requirements of the ductile iron pipe during production and ensuring the stability of the pipe during rotation. A pair of third motors serve as the power source, with support rollers installed at their output ends to support the ductile iron pipe. By controlling the rotation of the third motors, the support rollers can be driven to rotate, thereby realizing the rotation of the ductile iron pipe. The stop rollers are symmetrically arranged on both sides of the ductile iron pipe, providing a limiting effect and effectively preventing axial displacement during rotation. This ensures the stability and safety of the ductile iron pipe during rotation and also ensures the smooth loading and unloading of the plug.

[0022] Optionally, the plug includes a mounting ring, one side of which has a cross, and a metal plate for magnetic attraction of the magnetic disk is mounted at the center of the cross.

[0023] By adopting the above technical solution, the structural design of the plug facilitates its integration with the loading and unloading device, enabling rapid and precise loading and unloading. The mounting ring provides an overall mounting frame for the plug, ensuring its structural strength and stability. The cross-shaped structure on one side of the mounting ring not only increases the structural rigidity of the plug but also serves as a guide and positioner, aiding in the precise alignment of the plug with the ductile iron pipe spigot during loading and unloading. The magnetic plate of the power supply disk installed at the center of the cross-shaped structure matches the electric disk on the loading and unloading device, allowing the electric disk to quickly and accurately grasp the plug through magnetic attraction, improving the efficiency and accuracy of plug loading and unloading, and reducing errors and labor intensity caused by manual operation.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] 1. Traditional manual operation methods are inefficient, requiring significant time and effort for precise positioning, adjustment, and fixing of each plug. However, this novel hot-molded ductile iron pipe plug loading and unloading device automates and highly expedits plug loading and unloading through the coordinated operation of components such as the vehicle beam frame, overhead crane, and lifting arm. The overhead crane frame can move flexibly on the vehicle beam frame, quickly positioning itself to different work positions; the lifting arm can move laterally and longitudinally, quickly and accurately adjusting the plug position, greatly shortening the plug loading and unloading time, significantly improving production efficiency, and meeting the needs of large-scale production.

[0026] 2. In traditional operation methods, the large size and heavy weight of the plugs pose significant safety risks during hoisting and installation, such as worker injuries and equipment damage. This invention's device, through automated mechanical operation, eliminates the need for manual handling and installation of the plugs, reduces direct contact between workers and heavy objects, effectively lowers the probability of accidents, and protects worker safety and company property.

[0027] 3. During manual installation, it is difficult to ensure a tight fit between the plug and the edge of the socket, which can easily lead to inaccurate positioning and insecure fixing. This can cause cement mortar to leak during the high-speed centrifugation of the ductile iron pipe, affecting the quality of the lining. The device of this invention uses a first motor to drive a first gear, which in turn moves a rack, enabling the electromagnet to precisely extend and retract, stably gripping the plug. Simultaneously, a second motor drives a hook to rotate, providing additional assistance and protection against the plug falling off during installation.

[0028] 4. A second track is provided on the main beam of the overhead crane for the movement of the lifting arm, enabling the lifting arm to move laterally along the main beam. This expands the operating range of the device and can adapt to the loading and unloading needs of plugs in different positions. The second traveling device and transmission device on the lifting arm realize the lateral movement and longitudinal lifting of the lifting arm along the main beam, respectively, further increasing the spatial operational flexibility of the device. It can meet the loading and unloading needs of ductile iron pipe plugs of different sizes and positions, improving the versatility and adaptability of the device. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is a side view of the overhead crane bridge structure of this utility model;

[0031] Figure 3 This is a schematic diagram of the cross-sectional structure of the mounting base and fixing box of this utility model;

[0032] Figure 4 This is a side view of the plug structure of this utility model.

[0033] In the diagram: 1. Vehicle beam frame; 101. Steel structure column; 102. Tractor beam; 103. First track; 2. Tractor bridge frame; 201. End beam; 202. Main beam; 203. Second track; 204. First traveling device; 3. Lifting arm; 301. Second traveling device; 302. Transmission device; 4. Mounting base; 5. Fixing box; 6. First motor; 7. First gear; 8. Gear rack; 9. Electromagnetic disk; 10. Second motor; 11. Hook; 12. Drive component; 1201. Third motor; 1202. Thrust wheel; 1203. Support roller; 13. Plug; 1301. Mounting ring; 1302. Cross; 1303. Iron plate. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] like Figure 1 As shown in Figure 4, the specific solution of the embodiment is as follows: A loading and unloading device for hot-molded ductile iron pipe plugs includes a beam frame 1, which is installed horizontally on the plug loading station 13, the lining station and the plug unloading station 13. The beam frame 1 includes a steel structure column 101, which serves as the supporting foundation for the entire beam frame 1, bearing the weight of the crane bridge 2, the lifting arm 3, the plug 13 and related components such as the cast iron pipe, providing a stable support frame for the entire device, and ensuring that the device will not tilt or collapse due to load during operation.

[0037] The steel structure column 101 is equipped with a traveling beam 102. The steel structure is connected to the ground by bolts. The traveling beam 102 is welded to the top of the steel structure column 101. The steel structure column 101 provides an installation platform for the moving track of the traveling bridge 2. Together with the steel structure column 101, it forms the main structure of the beam frame 1, playing a connecting and supporting role. The traveling beam 102 connects the steel structure column 101 into a whole, enhancing the overall rigidity and stability of the beam frame 1. The upper surface of the traveling beam 102 is equipped with a first track 103 for the traveling bridge 2 to move. The first track 103 is adapted to the bottom of the traveling bridge 2, providing a moving track for the traveling bridge 2 and guiding the traveling bridge 2 to move longitudinally on the beam frame 1, realizing the switching of the device between different work positions.

[0038] The vehicle beam frame 1 is provided with a traveling bridge frame 2. The traveling bridge frame 2 includes a pair of end beams 201 connected to the traveling bridge frame 2, which serve as the two end support components of the traveling bridge frame 2. They connect to the main beam 202 and provide an installation position for the first traveling device 204. The main beam 202 is provided between the pair of end beams 201. The main beam 202 provides a track and support platform for the lifting arm 3 to move laterally. It connects the pair of end beams 201 to form the main frame of the traveling bridge frame 2.

[0039] The main beam 202 is provided with a second track 203 for the movement of a pair of lifting arms 3. The end beam 201 is provided with a first traveling device 204 for the crane bridge 2 to move longitudinally along the crane beam 102. The first traveling device 204 installed on the end beam 201 enables the crane bridge 2 to move on the beam frame 1. The second track 203 on the main beam 202 provides precise guidance for the lateral movement of the lifting arms 3, enabling the lifting arms 3 to move accurately to the designated position on the main beam 202, so as to achieve precise gripping and placement of the plug 13.

[0040] The overhead crane 2 is provided with a pair of lifting arms 3, and each pair of lifting arms 3 is provided with a second traveling device 301. The second traveling device 301 allows the lifting arms 3 to move laterally along the main beam 202. The lifting arms 3 are provided with a transmission device 302, which allows the lifting arms 3 to move longitudinally along the main beam 202. The transmission device 302 includes a mounting base 4 installed on the outer periphery of the lifting arms 3 and connected to the second traveling device 301. The mounting base 4 is provided with a transmission motor. The output end of the transmission motor is provided with a second gear. The lifting arms 3 are provided with a rack plate that meshes with the second gear.

[0041] The transmission device 302 drives the lifting arm 3 to move up and down longitudinally along the main beam 202, thereby adjusting the position of the plug 13 in the vertical direction. The transmission device 302 drives the second gear to rotate through the transmission motor. The second gear meshes with the rack plate, converting the rotational motion into the linear motion of the lifting arm 3, thereby realizing the lifting function of the lifting arm 3.

[0042] The first traveling device 204 and the second traveling device 301 each include rollers and drive motors that drive the rollers to rotate. The rollers and drive motors on the first traveling device 204 are respectively installed at the bottom of the end beam 201, and the rollers on the first traveling device 204 cooperate with the vehicle beam frame 1. The rollers and drive motors on the second traveling device 301 are respectively installed on the lifting arm 3, and the rollers on the second traveling device 301 cooperate with the second track 203. The design of the transmission device 302 enables the lifting arm 3 to accurately control the lifting height, meeting the height requirements for the installation and removal of the plug 13 at different work positions.

[0043] The first traveling device 204 drives the overhead crane 2 to move along the overhead crane beam 102, enabling rapid switching between different work positions. The first traveling device 204, through rollers, cooperates with the first track 103 on the overhead crane beam 1 to transmit power from the drive motor to the overhead crane 2, allowing it to move smoothly on the track. The second traveling device 301 drives the lifting arm 3 to move laterally along the main beam 202, allowing the lifting arm 3 to adjust its position on the main beam 202 for accurate gripping and placement of the plug 13. The second traveling device 301, through rollers, cooperates with the second track 203 on the main beam 202, enabling flexible lateral movement of the lifting arm 3. The design of the second traveling device 301 ensures the stability and accuracy of the lateral movement of the lifting arm 3. Reasonable control of the drive motor allows the lifting arm 3 to quickly and accurately reach the designated position, improving the operational flexibility and work efficiency of the device.

[0044] The lower ends of the pair of lifting arms 3 are respectively provided with mounting bases 4, and fixed boxes 5 are respectively installed on opposite sides of the pair of mounting bases 4. A first motor 6 is provided on the fixed box 5, and a first gear 7 is installed at the output end of the first motor 6. A rack 8 that meshes with the first gear 7 is provided inside the fixed box 5. The two ends of the rack 8 pass through and extend to the outside of the fixed box 5 and the mounting base 4 respectively. The fixed box 5 provides installation space for the first motor 6, the first gear 7 and the rack 8. The first motor 6 drives the rack 8 to extend and retract inside the fixed box 5 through the first gear 7, thereby realizing the horizontal position adjustment of the electric disk 9 so as to accurately correspond to the iron plate 1303 on the plug 13.

[0045] A pair of toothed rods 8 are each equipped with an electromagnet 9 that magnetically attracts the plug 13 at one end. The electromagnet 9 grips the plug 13 through magnetic attraction and is a key component in the process of loading and unloading the plug 13. After being powered on, the electromagnet 9 generates a strong magnetic attraction, firmly adhering the plug 13 to its surface, thus realizing the gripping and handling of the plug 13. A pair of mounting bases 4 are each equipped with a second motor 10 on their opposite sides. The output end of the second motor 10 is equipped with a hook 11. The second motor 10 and the hook 11 are mounted below the electromagnet 9. The control of the second motor 10 enables the hook 11 to rotate to the appropriate position at the appropriate time, working together with the electromagnet 9 to improve the safety of the device in the process of loading and unloading the plug 13.

[0046] The cast iron pipe is rotated at high speed by a drive component 12. The drive component 12 includes a pair of third motors 1201 mounted on the workstation and a retaining wheel 1202 for limiting the position of the cast iron pipe. The output ends of the pair of third motors 1201 are respectively equipped with support rollers 1203 for supporting the cast iron pipe. The retaining wheels 1202 are symmetrically arranged on both sides of the cast iron pipe. The third motors 1201 drive the support rollers 1203 to rotate. The support rollers 1203 support the cast iron pipe and drive it to rotate at high speed to meet the requirements of processes such as coating. The pair of third motors 1201 drive the corresponding support rollers 1203 respectively, and transmit the power to the cast iron pipe through friction to achieve stable high-speed rotation. The retaining wheels 1202 are symmetrically arranged on both sides of the cast iron pipe to limit the position of the cast iron pipe, prevent axial displacement of the cast iron pipe during high-speed rotation, and ensure the positional stability of the cast iron pipe during rotation.

[0047] The plug 13 includes a mounting ring 1301. One side of the mounting ring 1301 is provided with a cross 1302. An iron plate 1303 for magnetic attraction of the electromagnet 9 is installed at the center point of the cross 1302. The mounting ring 1301 serves as the main support structure of the plug 13, providing a mounting base for the cross 1302 and the iron plate 1303. It also cooperates with the pipe opening of the cast iron pipe to achieve the sealing function of the plug 13. The cross 1302 enhances the structural strength of the plug 13 and provides positioning and support for the installation of the iron plate 1303. The iron plate 1303 is installed at the center point of the cross 1302, which is accurate and facilitates the gripping of the electromagnet 9. It can improve the magnetic attraction between the electromagnet 9 and the iron plate 1303, reduce the risk of the plug 13 falling off during the loading and unloading process, and improve the operating efficiency and safety of the device.

[0048] The operation steps of the above embodiment are as follows:

[0049] The operator starts the first traveling device 204 of the overhead crane bridge 2 through the control panel, so that the overhead crane bridge 2 moves slowly along the first track 103 on the beam frame 1 to above the plug installation position 13. During the movement, the operator needs to closely observe the running status of the overhead crane bridge 2 and check for abnormal vibrations, abnormal noises, etc. At the same time, the operator uses the positioning sensor installed on the overhead crane bridge 2 or the beam frame 1 to monitor the position of the overhead crane bridge 2 in real time to ensure that it accurately reaches the position directly above the plug installation position 13. When the overhead crane bridge 2 reaches the predetermined position, the operator needs to confirm that the positioning indicator light is lit, indicating that the overhead crane bridge 2 has been accurately positioned.

[0050] Start the second traveling device 301 on the lifting arm 3 to move the lifting arm 3 laterally along the second track 203 on the main beam 202. Initially adjust the position of the lifting arm 3 so that the electric disk 9 is roughly aligned with the area where the plug 13 is located. During the movement, the operator should pay attention to the movement trajectory of the lifting arm 3 to ensure that it is well coordinated with the second track 203 on the main beam 202 without any jamming. At the same time, use the laser rangefinder installed on the lifting arm 3 to measure the horizontal distance between the electric disk 9 and the plug 13 and feed the data back to the control panel so that the operator can make precise adjustments.

[0051] Based on the data fed back by the laser rangefinder, the operator further fine-tunes the position of the lifting arm 3 so that the electric disk 9 is precisely aligned with the iron plate 1303 on the plug 13. During the adjustment process, the second traveling device 301 should be operated slowly to avoid the lifting arm 3 moving too fast and causing positional deviation. When the electric disk 9 and the iron plate 1303 are basically aligned in the horizontal direction, the operator needs to confirm the alignment again. This can be done by observing the camera screen on the control panel to ensure that the center of the electric disk 9 and the center of the iron plate 1303 are within the allowable range.

[0052] Start the first motor 6 on the fixed box 5. The first motor 6 drives the first gear 7 to rotate. The first gear 7 meshes with the rack 8, causing the rack 8 to slowly extend out of the fixed box 5 and push the electric disk 9 close to the plug 13. When the distance between the electric disk 9 and the iron plate 1303 reaches the set value, the operator first stops the first motor 6 and then powers on the electric disk 9 to generate a strong magnetic attraction. At the moment of power-on, the operator should observe whether the indicator light of the electric disk 9 lights up to confirm that the electric disk 9 is working normally and the plug 13 is gripped.

[0053] While the electromagnet 9 is gripping the plug 13 or after gripping it, immediately start the second motor 10 installed on the mounting base 4 to rotate the hook 11 180 degrees so that the hook 11 is below the iron plate 1303. After the hook 11 is rotated into position, the operator needs to confirm the relative position of the hook 11 and the iron plate 1303 to ensure that the hook 11 can reliably hook the iron plate 1303 when the electromagnet 9 fails, so as to prevent the plug 13 from tipping over.

[0054] Restart the second traveling device 301 and the first motor 6 to slowly push the plug 13 so that it can be connected and installed with the cast iron pipe.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for loading and unloading hot-molded ductile iron pipe plugs, characterized in that, The system includes a vehicle beam frame, on which a traveling bridge is mounted. A pair of lifting arms are mounted on the traveling bridge. Each pair of lifting arms has a mounting base at its lower end. A fixing box is mounted on each of the opposite sides of the mounting bases. A first motor is mounted on each fixing box. A first gear is mounted on the output end of the first motor. A gear rod meshing with the first gear is located inside the fixing box. Both ends of the gear rod extend through and to the outside of the fixing box and the mounting base. A magnetic disk for magnetically attracting the plug is mounted on one opposite end of each pair of gear rods. A second motor is mounted on each of the opposite sides of the mounting bases. A hook is mounted on the output end of the second motor. The cast iron pipe rotates at high speed via a driving component.

2. The loading and unloading device for a hot-molded ductile iron pipe plug according to claim 1, characterized in that: The vehicle frame includes steel structure columns and traveling beams installed on the steel structure columns. The steel structure is connected to the ground by bolts. The traveling beams are welded to the top of the steel structure columns. A first track for the traveling bridge to move is installed on the upper surface of the traveling beams. The first track is adapted to the bottom of the traveling bridge.

3. The loading and unloading device for a hot-molded ductile iron pipe plug according to claim 1, characterized in that: The overhead crane includes a pair of end beams connected to the overhead crane, a main beam between the pair of end beams, a second track on the main beam for moving the pair of lifting arms, and a first traveling device on the end beam for moving the overhead crane along the longitudinal direction of the overhead crane beam.

4. The loading and unloading device for a hot-molded ductile iron pipe plug according to claim 3, characterized in that: Each of the pair of lifting arms is provided with a second traveling device, which allows the lifting arm to move laterally along the main beam. The lifting arm is provided with a transmission device, which allows the lifting arm to move longitudinally along the main beam.

5. The loading and unloading device for a hot-molded ductile iron pipe plug according to claim 4, characterized in that: The first traveling device and the second traveling device each include rollers and drive motors that drive the rollers to rotate. The rollers and drive motors on the first traveling device are respectively installed at the bottom of the end beam, and the rollers on the first traveling device cooperate with the vehicle beam frame. The rollers and the drive motor on the second traveling device are respectively mounted on the lifting arm, and the rollers on the second traveling device cooperate with the second track.

6. The loading and unloading device for a hot-molded ductile iron pipe plug according to claim 4, characterized in that: The transmission device includes a mounting base installed on the outer periphery of the lifting arm and connected to the second traveling device. The mounting base is provided with a transmission motor, and the output end of the transmission motor is equipped with a second gear. The lifting arm is provided with a rack plate that meshes with the second gear.

7. The loading and unloading device for a hot-molded ductile iron pipe plug according to claim 1, characterized in that: The driving component includes a pair of third motors mounted on the workstation and a stop wheel for limiting the cast iron pipe. The output ends of the pair of third motors are respectively equipped with support rollers for supporting the cast iron pipe, and the stop wheels are symmetrically arranged on both sides of the cast iron pipe.

8. The loading and unloading device for a hot-molded ductile iron pipe plug according to claim 1, characterized in that: The plug includes a mounting ring, one side of which has a cross, and a metal plate for magnetic attraction of the magnetic disk is mounted at the center of the cross.

Images