A method for gluing hollow insulators

Abstract

The present invention relates to a method for gluing hollow insulators, comprising the following steps: assembling the hollow insulators to be glued and fixed in advance, and then placing them in a special drying device, and when heating and drying the flanges of the hollow insulators after gluing using a heating wire, using a controller, a temperature sensor and a time relay equipped with the drying device to measure and control the heating temperature and heating time until the drying is completed and the gluing is completed. The gluing method of the present invention, through the cooperation of an additional control unit, uses a temperature sensor to detect the temperature in the oven during the heating and drying process, and controls the heating power of the heating wire through a controller, and adjusts it in time according to the temperature change, so as to better achieve the gluing and fixing of the flange and the inner tube of the core rod; in addition, the time relay is used to cooperate to control the heating time, and can record it in time after the heating wire is powered off, so as to set a new heating time after subsequent reheating.

Description

Technical Field

[0001] The invention relates to the field of hollow insulators, and in particular to a hollow insulator gluing method. Background Art

[0002] The hollow composite insulator is composed of an insulating core rod inner tube, an end flange, and a silicone rubber umbrella sleeve. The silicone rubber umbrella sleeve is formed by connecting two or more silicone rubber umbrella sleeve segments. The connection structure between two adjacent silicone rubber umbrella sleeve segments is a stepped lap structure, that is, the tail of the umbrella sleeve segment completed in the previous processing is a stepped front lap ring with an outer diameter smaller than the outer diameter of the umbrella sleeve segment, and the front lap ring is coated with adhesive. The front section of the umbrella sleeve segment completed in the next processing is a rear lap ring with an inner diameter matching the lap ring, and the front lap ring and the rear lap ring are bonded and connected by adhesive. Its lap structure increases the lap bonding area, and when the silicone rubber umbrella sleeve is subjected to axial tension, the connection strength between the two mold umbrella sleeves is strengthened, and the thinning and cracking caused by the shrinkage of silicone rubber are greatly reduced, thereby ensuring the electrical performance of the hollow composite insulator and extending its service life.

[0003] At present, in the process of processing hollow composite insulators, after the umbrella cover is glued on the inner tube of the insulating core rod, flanges need to be glued on both ends. When gluing the flanges, the flanges have corresponding mounting holes. The flange mounting holes of the hollow composite insulators have the requirement of penetration. After the flanges are glued, they need to be dried and fixed. The traditional drying and fixing methods are all realized in an oven. When using an oven for drying and fixing, due to the needs of the process, the hollow insulator needs to be heated in two different temperature sections, and each temperature section needs to maintain a certain heating time.

[0004] In the above process, in order to ensure the heat preservation effect of the oven, the oven is usually required to be sealed or semi-sealed to prevent the heat from diffusing outward. In actual production, the staff found another problem: First, since the oven adopts a fully sealed or semi-sealed design, the heat preservation effect is better. When controlling the temperature, heating wires or heating rods are usually used to heat the oven. The heating temperature set by the heating wires or heating rods is usually consistent with the temperature of the temperature section that needs to be heated, which easily leads to a high temperature in the oven, affecting the overall fixing effect; in addition, when controlling the time of different temperature sections, it is inevitable that it will be affected by many factors. For example, when the heating temperature is too high, the self-protection mechanism of the heating wire or heating rod will be triggered, causing the heating wire or heating rod to be directly powered off and no longer heated. The operator cannot timely understand at what temperature the heating wire or heating rod is powered off, nor how long the power is off, which brings a lot of workload to the subsequent glue fixing and re-heating of the hollow insulator. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a hollow insulator gluing method which can well control the heating temperature and facilitate the subsequent reheating after power failure.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a telescopic transport joist, the innovation of which is: comprising the following steps

[0007] S1: First, assemble the hollow insulators to be glued and fixed in advance, and then put them into a special drying equipment;

[0008] The drying equipment comprises an oven, which is a hollow structure and has a heating wire arranged inside the oven;

[0009] A box cover matched with the oven, the box cover is composed of two symmetrically distributed cover plates, a semicircular groove is opened in the middle of the adjacent side of the two cover plates, and after the two cover plates are combined, the two grooves together form a vent hole;

[0010] A support table installed in the oven, the support table is in the shape of a fence and is driven by a rotary mechanism to rotate;

[0011] A control unit, the control unit includes a controller, a temperature sensor, a time relay and an alarm, the temperature sensor is installed in the oven, the controller is installed outside the oven, and the controller is equipped with a display screen, the display screen is used to display temperature and time parameters, the time relay is installed in the controller, the temperature sensor and the time relay are connected to the input end of the controller, and the output end of the controller is connected to the heating wire;

[0012] The heating wire, the rotating mechanism and the temperature sensor share the same power supply circuit, and the controller, the display screen and the time relay share another power supply circuit;

[0013] After opening the oven cover, place the hollow insulator on the support table by hoisting, and close the oven cover again. At this time, the flange on one side of the hollow insulator is placed in the oven, and the flange on the other side is placed outside the oven. Glue is injected into the flange on the side of the hollow insulator placed in the oven, and wait for heating and drying;

[0014] S2: The controller controls the heating wire to heat the oven for the first time, and sets the heating temperature to 75-90°C and the heating time to 3-5 minutes. At the same time, the temperature sensor detects the temperature in the oven and feeds back the detection result to the controller;

[0015] S3: The controller determines whether the temperature in the oven reaches the set temperature based on the temperature data transmitted by the temperature sensor. If it reaches the set temperature, the process proceeds to step S4; if not, the process proceeds to step S5;

[0016] S4: The controller controls the heating wire to keep working at the power. At the same time, the temperature sensor will keep detecting the temperature in the oven in real time, and refer to step S3 to ensure that the temperature in the oven is within the set temperature range. In addition, the time relay also starts working at the same time, and enters step S6;

[0017] S5: The controller controls the heating wire to adjust the power. If the oven temperature is higher than the set temperature, the controller controls the heating wire to reduce the power. If the oven temperature is lower than the set temperature, the controller controls the heating wire to increase the power. At the same time, the temperature sensor will keep detecting the temperature in the oven in real time, and repeat step S3;

[0018] S6: The time relay counts the heating time in the oven and determines whether the set time has been reached. If the set time has been reached, the process proceeds to step S9; if the set time has not been reached, the process proceeds to step S7;

[0019] S7: The controller determines whether the temperature in the oven meets the requirement according to the data transmitted by the temperature sensor. If so, the process proceeds to step S4. If not, the controller determines whether the heating wire works normally. If so, the process proceeds to step S5. If not, the process proceeds to step S8.

[0020] S8: The controller controls the alarm to sound an alarm, and the time relay records the heating time at this time. Then the staff handles the situation that the heating wire does not work normally. After the treatment, the heating time is reset according to the time of the time relay, and the heating wire starts working again, and returns to step S3;

[0021] S9: The controller controls the heating wire to heat the oven for the second time, and sets the heating temperature to 110-130°C and the heating time to 3-5 minutes. At the same time, the temperature sensor detects the temperature in the oven and feeds the detection result back to the controller. Referring to steps S3-S8, the second heating is completed and the process goes to step S10;

[0022] S10: After the two heatings are completed, the controller controls the heating wire to stop working, takes out the hollow insulator, completes the heating and drying of the flange on this side of the hollow insulator after glue injection, then opens the box cover, rotates the hollow insulator 180° by hoisting, and refers to steps S2-S9 to glue the flange on the other side of the hollow insulator.

[0023] Furthermore, there are two temperature sensors, which are respectively arranged on both sides of the diagonal line in the oven.

[0024] Furthermore, the connection between the cover plate and the oven is as follows: a horizontal slot for accommodating the cover plate to be inserted and movable is respectively provided on both sides of the upper end of the oven, and the two sides of the cover plate are respectively inserted into the horizontal slot.

[0025] Furthermore, the two cover plates are driven by a linkage mechanism to open and close, and the linkage mechanism includes a bidirectional lead screw, on which is a pair of lead screw nuts for use together, and the two lead screw nuts are respectively connected to the two cover plates, and the bidirectional lead screw is driven by a linkage motor and drives the two cover plates to move away from or closer to each other.

[0026] Furthermore, the rotating mechanism includes a rotating platform, which is driven to rotate by a rotating motor. A pallet group is installed on both sides of the upper end of the rotating platform. Each pallet group is composed of a pair of pallets, and the pallets are Y-shaped.

[0027] Furthermore, the support platform is also driven by a lifting mechanism to move up and down. The lifting mechanism includes a pair of lifting cylinders installed at the bottom end of the oven. The piston rods of the lifting cylinders extend into the oven and are connected together through a lifting platform. The upper end of the lifting platform is connected to the rotating mechanism and drives the rotating mechanism to move up and down.

[0028] The advantages of the present invention are as follows: the binding method of the present invention, through the cooperation of an additional control unit, uses a temperature sensor to detect the temperature in the oven during the heating and drying process, and controls the heating power of the heating wire through a controller, and makes timely adjustments according to temperature changes to better achieve the gluing and fixing of the flange and the inner tube of the core rod; in addition, a time relay is used to cooperate to control the heating time, and it can be recorded in time after the heating wire is powered off, so that a new heating time can be set after subsequent reheating.

[0029] The heating wire, rotating mechanism and temperature sensor are designed to use the same power supply circuit, while the controller, display screen and time relay are designed to use another power supply circuit. In this way, after the heating wire is powered off, the time relay and controller can continue to work, so that subsequent personnel can time the reheating of the heating wire after it is powered on to ensure the entire heating time.

[0030] In the same oven, two temperature sensors distributed on the diagonal are used to detect the temperature inside the oven, which can more accurately determine the heating temperature in the oven and provide a good basis for improving the drying and fixing effect.

[0031] By setting the rotary mechanism, the hollow insulator can rotate freely 360° during the drying process in the oven, so that all parts of the hollow insulator can be well dried, improving the drying effect, and through the cooperation of the fence-shaped support platform, the umbrella skirt of the hollow insulator can be embedded in the gap of the support platform for limiting, avoiding the phenomenon of movement between the hollow insulator and the support platform during the rotation process.

[0032] The vent holes on the cover are set to exhaust the oven and avoid excessive pressure when the oven temperature rises due to heating. As for the connection between the cover and the oven, a plug-in connection method is adopted, and through the cooperation of the linkage mechanism, only one linkage motor is needed to realize the synchronous movement of the two cover plates, which is very convenient, reduces energy consumption, and reduces manual labor.

[0033] By setting up the lifting mechanism, the support table can be lifted up and down, so that the support table can be raised after the drying is completed to avoid burns caused by the high temperature in the oven when people directly reach into the oven to take out the items. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the drying equipment in the present invention.

[0035] Figure 2 It is a schematic diagram of the box cover in the present invention.

[0036] Figure 3 It is a schematic diagram of the support platform in the present invention.

[0037] Figure 4 It is a schematic diagram of the linkage mechanism in the present invention. DETAILED DESCRIPTION

[0038] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0039] The hollow insulator gluing method of the present invention is achieved by the following steps:

[0040] S1: First, assemble the hollow insulators to be glued and fixed in advance, and then put them into a special drying equipment.

[0041] like Figure 1-Figure 4 As shown in the schematic diagram, the drying device includes an oven 1, which is a hollow structure, and a heating wire is arranged inside the oven 1. The heating wire in the present invention can also be replaced by a heating rod or other similar heating units.

[0042] A cover 2 matched with the oven 1, such as Figure 2 As shown in the schematic diagram, the box cover 2 is composed of two symmetrically distributed cover plates 21, and a semicircular groove is opened in the middle position of the adjacent side of the two cover plates 21. After the two cover plates 21 are combined, the two grooves together form a vent 22. The vent on the box cover 2 is set to exhaust the oven 1 to avoid the occurrence of excessive pressure after the oven 1 is heated and the temperature increases.

[0043] The connection between the cover plate 21 and the oven 1 is as follows: a horizontal slot for inserting and moving the cover plate 21 is respectively provided on both sides of the upper end of the oven 1, and both sides of the cover plate 21 are respectively inserted into the horizontal slot.

[0044] The two cover plates 21 are opened and closed by a linkage mechanism. Figure 4 As shown in the schematic diagram, the linkage mechanism includes a bidirectional lead screw 23 installed on the oven 1, a pair of lead screw nuts 24 are provided on the bidirectional lead screw 23, and the two lead screw nuts 24 are respectively connected to the two cover plates 21, and the bidirectional lead screw 23 is driven by a linkage motor 25 and drives the two cover plates 21 to move away from or close to each other. For the connection between the cover plate 21 and the oven 1, a plug-in connection method is adopted, and through the cooperation of the linkage mechanism, only one linkage motor 25 is needed to realize the synchronous action of the two cover plates 21, which is very convenient, reduces energy consumption, and also reduces manual labor.

[0045] A support table 3 installed in the oven 1, such as Figure 3 As shown in the schematic diagram, the support platform 3 is in the shape of a fence and is driven by a rotary mechanism to rotate. Through the setting of the rotary mechanism, the hollow insulator can rotate 360 ​​degrees freely during the drying process in the oven 1, so that all parts of the hollow insulator can be well dried, improving the drying effect, and through the cooperation of the fence-shaped support platform 3, the shed of the hollow insulator can be embedded in the gap of the support platform for position limiting, avoiding the phenomenon of movement between the hollow insulator and the support platform during the rotation process.

[0046] The rotating mechanism includes a rotating platform 5, which is driven to rotate by a rotating motor 6. A pallet group is installed on both sides of the upper end of the rotating platform 5. Each pallet group is composed of a pair of pallets 4. The pallet 4 is Y-shaped, and the support platform 3 is supported by the pallet 4.

[0047] The support table 3 is also driven by a lifting mechanism to move up and down. The lifting mechanism includes a pair of lifting cylinders 7 installed at the bottom of the oven 1. The piston rods of the lifting cylinders 7 extend into the oven 1 and are connected together through a lifting platform 8. The upper end of the lifting platform 8 is connected to the rotary motor 6 of the rotary mechanism, and drives the rotary mechanism to move up and down to realize the lifting of the support table 3. Through the setting of the lifting mechanism, the lifting and lowering of the support table 3 is realized, so that the support table 3 can be raised after the drying is completed, so that the personnel can take the items, avoiding the phenomenon of scalding due to the high temperature in the oven when the personnel directly reach into the oven to take the items.

[0048] A control unit, the control unit includes a controller, a temperature sensor, a time relay and an alarm, the temperature sensor is installed in the oven 1, the controller is installed outside the oven 1, and the controller is equipped with a display screen, the display screen is used to display temperature and time parameters, the time relay is installed in the controller, the temperature sensor and the time relay are connected to the input end of the controller, and the output end of the controller is connected to the heating wire.

[0049] The heating wire, the rotary motor 6 of the rotary mechanism and the temperature sensor share the same power supply circuit, and the controller, the display screen and the time relay share another power supply circuit. The heating wire, the rotary mechanism and the temperature sensor are designed to use the same power supply circuit, and the controller, the display screen and the time relay are designed to use another power supply circuit. In this way, after the heating wire is powered off, the time relay and the controller can continue to work, so that subsequent personnel can time the reheating of the heating wire after it is powered on to ensure the entire heating time.

[0050] There are two temperature sensors, which are arranged on both sides of the diagonal in the oven 1. In the same oven, two temperature sensors distributed on the diagonal are used to detect the temperature in the oven 1, which can more accurately determine the heating temperature in the oven, providing a good basis for improving the drying and fixing effect.

[0051] When the operation is performed, the linkage motor 25 drives the bidirectional lead screw 23 to work, so that the two cover plates 21 are opened, and then the lifting cylinder 7 drives the support platform 3 to rise, and then the hollow insulator is placed on the support platform 3 by hoisting, and the support platform 3 is lowered, and the two cover plates 21 are closed at the same time. At this time, the flange on one side of the hollow insulator is placed in the oven, and the flange on the other side is placed outside the oven, and glue is injected into the flange on the side of the hollow insulator placed in the oven, waiting for heating and drying;

[0052] S2: The controller controls the heating wire to heat the oven 1 for the first time to dry the hollow insulator. During the drying process, the rotating motor 6 starts to work and drives the support table 3 to start rotating, so that all positions of the hollow insulator can be well dried. The heating temperature is set to 75-90°C and the heating time is 3-5 minutes. At the same time, the temperature in the oven is detected by the temperature sensor and the detection result is fed back to the controller.

[0053] S3: The controller determines whether the temperature in the oven 1 reaches the set temperature based on the temperature data transmitted by the temperature sensor. If it reaches the set temperature, it goes to step S4; if not, it goes to step S5.

[0054] S4: The controller controls the heating wire to maintain the power to work. At the same time, the temperature sensor will keep detecting the temperature in the oven 1 in real time, and refer to step S3 to ensure that the temperature in the oven is within the set temperature range. In addition, the time relay also starts working at the same time and enters step S6.

[0055] S5: The controller controls the heating wire to adjust the power. If the temperature of the oven 1 is higher than the set temperature, the controller controls the heating wire to reduce the power. If the temperature of the oven 1 is lower than the set temperature, the controller controls the heating wire to increase the power. At the same time, the temperature sensor will keep detecting the temperature in the oven 1 in real time and repeat step S3.

[0056] S6: The time relay measures the heating time in the oven 1 and determines whether the set time has been reached. If the set time has been reached, the process proceeds to step S9; if the set time has not been reached, the process proceeds to step S7.

[0057] S7: The controller determines whether the temperature in the oven 1 meets the requirements based on the data transmitted by the temperature sensor. If so, the process proceeds to step S4. If not, the controller determines whether the heating wire works normally. If so, the process proceeds to step S5. If not, the process proceeds to step S8.

[0058] S8: The controller controls the alarm to sound an alarm, and the time relay records the heating time at this time. Then the staff will deal with the situation where the heating wire does not work normally. After the treatment, the heating time is reset according to the time of the time relay, the heating wire starts working again, and returns to step S3.

[0059] S9: The controller controls the heating wire to heat the oven 1 for the second time, and sets the heating temperature to 110-130°C and the heating time to 3-5 minutes. At the same time, the temperature sensor detects the temperature in the oven and feeds the detection result back to the controller. Referring to steps S3-S8, the second heating is completed and the process goes to step S10.

[0060] S10: After the two heatings are completed, the controller controls the heating wire to stop working and the drying is completed. Then the linkage motor 25 drives the bidirectional lead screw 23 to work, so that the two cover plates 21 are opened. Then the lifting cylinder 7 drives the support platform 3 to rise, and then the box cover is opened. The hollow insulator is rotated 180° by hoisting, and the flange on the other side of the hollow insulator is glued with reference to steps S2-S9.

[0061] The binding method of the present invention, through the cooperation of an additional control unit, uses a temperature sensor to detect the temperature in the oven during the heating and drying process, and controls the heating power of the heating wire through a controller, and makes timely adjustments according to temperature changes to better achieve the binding and fixation of the flange and the inner tube of the core rod; in addition, a time relay is used to cooperate to control the heating time, and it can be recorded in time after the heating wire is powered off, so that a new heating time can be set after subsequent reheating.

[0062] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for gluing a hollow insulator, characterized in that: The following steps are included S1: First, assemble the hollow insulators to be glued and fixed in advance, and then put them into a special drying equipment; The drying equipment comprises an oven, which is a hollow structure and has a heating wire arranged inside the oven; A box cover matched with the oven, the box cover is composed of two symmetrically distributed cover plates, a semicircular groove is opened in the middle of the adjacent side of the two cover plates, and after the two cover plates are combined, the two grooves together form a vent hole; A support table installed in the oven, the support table is in the shape of a fence and is driven by a rotary mechanism to rotate; A control unit, the control unit includes a controller, a temperature sensor, a time relay and an alarm, the temperature sensor is installed in the oven, the controller is installed outside the oven, and the controller is equipped with a display screen, the display screen is used to display temperature and time parameters, the time relay is installed in the controller, the temperature sensor and the time relay are connected to the input end of the controller, and the output end of the controller is connected to the heating wire; The heating wire, the rotating mechanism and the temperature sensor share the same power supply circuit, and the controller, the display screen and the time relay share another power supply circuit; After opening the oven cover, place the hollow insulator on the support table by hoisting, and close the oven cover again. At this time, the flange on one side of the hollow insulator is placed in the oven, and the flange on the other side is placed outside the oven. Glue is injected into the flange on the side of the hollow insulator placed in the oven, and wait for heating and drying; S2: The controller controls the heating wire to heat the oven for the first time, and sets the heating temperature to 75-90°C and the heating time to 3-5 minutes. At the same time, the temperature sensor detects the temperature in the oven and feeds back the detection result to the controller; S3: The controller determines whether the temperature in the oven reaches the set temperature based on the temperature data transmitted by the temperature sensor. If it reaches the set temperature, the process proceeds to step S4; if not, the process proceeds to step S5; S4: The controller controls the heating wire to keep working at the power. At the same time, the temperature sensor will keep detecting the temperature in the oven in real time, and refer to step S3 to ensure that the temperature in the oven is within the set temperature range. In addition, the time relay also starts working at the same time, and enters step S6; S5: The controller controls the heating wire to adjust the power. If the oven temperature is higher than the set temperature, the controller controls the heating wire to reduce the power. If the oven temperature is lower than the set temperature, the controller controls the heating wire to increase the power. At the same time, the temperature sensor will keep detecting the temperature in the oven in real time, and repeat step S3; S6: The time relay counts the heating time in the oven and determines whether the set time has been reached. If the set time has been reached, the process proceeds to step S9; if the set time has not been reached, the process proceeds to step S7; S7: The controller determines whether the temperature in the oven meets the requirement according to the data transmitted by the temperature sensor. If so, the process proceeds to step S4. If not, the controller determines whether the heating wire works normally. If so, the process proceeds to step S5. If not, the process proceeds to step S8. S8: The controller controls the alarm to sound an alarm, and the time relay records the heating time at this time. Then the staff handles the situation that the heating wire does not work normally. After the treatment, the heating time is reset according to the time of the time relay, and the heating wire starts working again, and returns to step S3; S9: The controller controls the heating wire to heat the oven for the second time, and sets the heating temperature to 110-130°C and the heating time to 3-5 minutes. At the same time, the temperature sensor detects the temperature in the oven and feeds the detection result back to the controller. Referring to steps S3-S8, the second heating is completed and the process goes to step S10; S10: After the two heatings are completed, the controller controls the heating wire to stop working, takes out the hollow insulator, completes the heating and drying of the flange on this side of the hollow insulator after glue injection, then opens the box cover, rotates the hollow insulator 180° by hoisting, and refers to steps S2-S9 to glue the flange on the other side of the hollow insulator.

2. The method for gluing hollow insulators according to claim 1, characterized in that: There are two temperature sensors in total, which are respectively arranged on both sides of the diagonal line in the oven.

3. The method for gluing hollow insulators according to claim 1, characterized in that: The connection between the cover plate and the oven is as follows: a horizontal slot for accommodating the cover plate to be inserted and move is respectively provided on both sides of the upper end of the oven, and the two sides of the cover plate are respectively inserted into the horizontal slot.

4. The method for gluing hollow insulators according to claim 3, characterized in that: The two cover plates are opened and closed by a linkage mechanism, which includes a bidirectional lead screw with a pair of matching lead screw nuts on the bidirectional lead screw, and the two lead screw nuts are respectively connected to the two cover plates. The bidirectional lead screw is driven by a linkage motor and drives the two cover plates to move away from or closer to each other.

5. The method for gluing hollow insulators according to claim 1, characterized in that: The slewing mechanism comprises a slewing platform which is driven by a rotary motor to rotate. A support plate group is installed on both sides of the upper end of the slewing platform. Each support plate group is composed of a pair of support plates, and the support plates are Y-shaped.

6. The method for gluing hollow insulators according to claim 1, characterized in that: The support platform is also driven by a lifting mechanism to move up and down. The lifting mechanism includes a pair of lifting cylinders installed at the bottom end of the oven. The piston rods of the lifting cylinders extend into the oven and are connected together through a lifting platform. The upper end of the lifting platform is connected to the rotating mechanism and drives the rotating mechanism to move up and down.

Images