Tower tray hoisting tool of methanol recovery device and construction method

Abstract

The invention relates to the related field of maintenance and hoisting of natural gas treatment methanol recovery device trays, and discloses a methanol recovery device tray hoisting tool and a construction method.The hoisting tool is characterized in that a hoisting assembly is arranged outside a methanol recovery device and on the ground, and the hoisting assembly comprises a base fixing assembly fixed to the ground; the rotary bearing is used for rotating, the hoisting motor assembly is assembled on the rotary bearing, a steel wire rope assembly is wound on the hoisting motor assembly, and the other end of the steel wire rope assembly is used for sequentially hoisting trays in the hoisting methanol recovery device through a pulley assembly on an L-shaped bent pipe, so that the working hours are saved, and the labor intensity of field operators is reduced; the operation risk of field operation personnel is reduced; and therefore, the application range and the working efficiency of the whole device overhaul hoisting equipment are effectively improved.

Description

Technical Field

[0001] The invention relates to the field related to the maintenance and hoisting of a tower plate of a natural gas processing methanol recovery device, and in particular to a tower plate hoisting tool and a construction method for a methanol recovery device. Background Art

[0002] The methanol recovery unit of the natural gas processing plant has a large amount of alcohol-containing water impurities to be treated during production. Under the action of the shielded pump, the alcohol-containing wastewater flows from the top of the tower through the plug hole of the tower plate to the bottom of the tower. Due to the high temperature of the steam, the alcohol-containing water impurities are calcified and adhere to the surface of the tower plate and the plug hole; resulting in the blockage of the tower plate and the reduction of the production efficiency of the methanol recovery unit, which requires irregular tower plate maintenance during production. The total height of the methanol recovery unit is 38.5 meters. The on-site maintenance of the tower plate needs to be carried out on the device operating platform. When cleaning the dirt on the tower plate at high altitude, there is a high risk of personnel falling; and the limited operating space causes the tower plate to be not cleaned thoroughly, which increases the number of maintenance again. In order to improve the quality of tower plate maintenance, the tower plate needs to be hoisted to the ground for maintenance. However, there is no special hoisting equipment for the tools and materials used on site, and manual hoisting operations are required on the top of the tower, which poses a great risk of personnel and equipment accessories falling. In view of the above problems, it is necessary to design a tower plate hoisting equipment for the methanol recovery unit to safely hoist the tower plate removed for maintenance and the required maintenance accessories and maintenance tools. In order to solve the above safety risks, speed up the inspection and maintenance of the equipment, and reduce the labor intensity of employees, a special tower plate inspection and lifting equipment was specially invented and manufactured.

[0003] Through the patent network, 22 related patents of tower tray hoisting tools were searched. Among them, "A vertical cooling tower maintenance hoisting tool" (patent number CN211594826U) is heavy, not suitable for 38.5-meter-high hoisting operations, and the equipment is difficult to repair and maintain; "A steel pipe column installation and vertical adjustment machine and steel pipe column installation and vertical adjustment method" (patent number CN110821190A) has a cumbersome manufacturing process and requires multiple people to operate; "A distribution network overhead line maintenance hoisting tool" (patent number CN214611268U) can be used at high altitudes, but it is difficult to carry and the manual operation hoisting torque is difficult to control, which can easily cause the equipment to fall. None of the above hoisting tools can solve the tower tray hoisting operation requirements of the methanol recovery unit in the treatment plant. Through on-site inspection and measurement, it was determined to make a tower tray tool that is suitable for on-site operation and can be safely and quickly hoisted. Summary of the invention

[0004] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide a tower plate lifting tool and construction method for a methanol recovery device, so as to solve the technical problems in the prior art of low maintenance efficiency of the tower plate device, high labor intensity of operators, and high risk of falling of equipment and personnel.

[0005] The present invention is achieved through the following technical solutions:

[0006] A methanol recovery device tower tray hoisting tool comprises a pulley assembly arranged on an L-shaped bend pipe at the top of the methanol recovery device and a hoisting assembly located outside the methanol recovery device and arranged on the ground; the hoisting assembly comprises a base fixing assembly, a slewing bearing, a hoisting motor assembly and a wire rope assembly; the base fixing assembly is fixedly arranged on the ground, the slewing bearing is rotatably arranged on the top of the base fixing assembly, the hoisting motor assembly is arranged on the slewing bearing, one end of the wire rope assembly is wound around the hoisting motor assembly, and the other end is hoisted from the top to the bottom of the methanol recovery device through the pulley assembly on the L-shaped bend pipe at the top of the methanol recovery device, and the hoisting end is used to hoist the tower tray in the methanol recovery device.

[0007] Preferably, the base fixing assembly includes a base, an angle iron fixing frame and a fixed base plate; the base is buried in the ground and flush with the ground, and is connected to the bottom of the angle iron fixing frame through anchor bolts; the fixed base plate is welded to the top of the angle iron fixing frame, and is fixedly threadedly connected to the inner ring of the slewing bearing through a number of fixed inner bolts.

[0008] Preferably, two sets of fixed angle components are welded on the angle iron fixing frame on one side of the slewing bearing, which are used to fix and lock the rotation angle of the slewing bearing; the fixed angle component includes a locking bolt and a fixed angle nut, and the fixed angle nut is fixed on the angle iron fixing frame on one side of the slewing bearing; the locking bolt passes through the fixed angle nut and is inserted into the side wall of the slewing bearing.

[0009] Preferably, the hoisting motor assembly includes a hoisting motor fixing plate, a motor fixing bracket and a hoisting motor; the bottom end of the hoisting motor fixing plate is fixed to the top of the slewing bearing by a plurality of fixed external bolts, the bottom end of the motor fixing bracket is fixed to the top of the hoisting motor fixing plate by a motor support locking bolt, the hoisting motor is assembled on the motor fixing bracket, and one end of the wire rope assembly is wrapped around the hoisting motor.

[0010] Furthermore, a motor end balancing bracket is arranged between the end of the hoisting motor and the hoisting motor fixing plate.

[0011] Preferably, the wire rope assembly includes a motor-end wire rope and a tower-top wire rope; one end of the motor-end wire rope is wound around the hoisting motor assembly, and the other end is connected to one end of the tower-top wire rope, and the other end of the tower-top wire rope passes through the pulley assembly on the L-shaped elbow at the top of the methanol recovery device and is hoisted from the top to the bottom of the methanol recovery device, and the hoisting end of the tower-top wire rope is used to hoist the tower plate in the methanol recovery device.

[0012] Furthermore, a motor hook is arranged at one end of the steel wire rope at the motor end, and a connecting hook is arranged at one end of the steel wire rope at the top of the tower; a counterweight hook is arranged at the other end; the motor hook is connected to the connecting hook, and the counterweight hook is used for hoisting the tower plate.

[0013] Furthermore, the methanol recovery device is arranged in multiple layers from top to bottom, and a guardrail platform is provided on each layer for operators to hoist the tower plate onto the wire rope assembly on the guardrail platform.

[0014] A construction method of a methanol recovery device tower tray hoisting tool, based on the above-mentioned methanol recovery device tower tray hoisting tool, includes the following process:

[0015] Fix the base fixing assembly on the ground, and fix the hoisting motor assembly on the base fixing assembly. One end of the wire rope assembly is wound around the hoisting motor assembly, and the other end is hoisted from the top to the bottom of the methanol recovery device through the pulley assembly on the L-shaped elbow at the top of the methanol recovery device.

[0016] The operator hoists the tower plates in the methanol recovery device on the wire rope assembly at the top and bottom of the methanol recovery device respectively, and drives the wire rope assembly to lower the tower plates through the hoisting motor assembly, until the tower plates in the methanol recovery device are hoisted to the ground from high to low in sequence, and the tower plate hoisting work is completed.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] The invention provides a tower plate hoisting tool for a methanol recovery device. The hoisting component is located outside the methanol recovery device and is arranged on the ground. The hoisting component includes a base fixing component fixed on the ground, a slewing bearing for rotation and a hoisting motor component assembled on the slewing bearing. A wire rope component is wound around the hoisting motor component. The other end of the wire rope component is passed through a pulley component on an L-shaped elbow to sequentially hoist the tower plates in the hoisting methanol recovery device, thereby saving working hours, reducing the labor intensity of on-site operators, and reducing the operation risks of on-site operators; thereby effectively improving the application scope and work efficiency of the hoisting equipment for maintenance of the entire device.

[0019] Furthermore, the base fixing assembly includes a base, an angle iron fixing frame and a fixed bottom plate; the base is buried in the ground and flush with the ground, and is connected to the bottom of the angle iron fixing frame through anchor bolts; during the hoisting process, a stable pulling force is provided to the wire rope to avoid instability of the base and affect the hoisting work of the tower plate. The fixed bottom plate is welded to the top of the angle iron fixing frame and is fixedly threadedly connected to the inner ring of the slewing bearing through a number of fixed inner bolts, thereby ensuring the hoisting efficiency of the tower plate.

[0020] Furthermore, two sets of fixed angle components are welded on the angle iron fixing frame on one side of the slewing bearing, which are used to fix and lock the rotation angle of the slewing bearing; the fixed angle component includes a locking bolt and a fixed angle nut, and the fixed angle nut is fixed on the angle iron fixing frame on one side of the slewing bearing; the locking bolt passes through the fixed angle nut and is inserted on the side wall of the slewing bearing, and the fixed end base is connected to the movable end motor through the slewing bearing, so that the hoisting motor can rotate freely, achieving the effect of one machine with two uses, where one machine with two uses means that there is no need to select a base, and the tower plates in multiple sets of methanol recovery devices can be hoisted by selecting a slewing bearing; at the same time, the fixed angle component facilitates locking the angle to avoid unstable rotation of the slewing bearing during the hoisting process.

[0021] Furthermore, the hoisting motor assembly includes a hoisting motor fixing plate, a motor fixing bracket and a hoisting motor; the bottom end of the hoisting motor fixing plate is fixed to the top of the slewing bearing by a plurality of fixed external bolts, the bottom end of the motor fixing bracket is fixed to the top of the hoisting motor fixing plate by a motor support locking bolt, the hoisting motor is assembled on the motor fixing bracket, one end of the wire rope assembly is wound around the hoisting motor, and the hoisting motor assembly can effectively provide driving force, so that the wire rope assembly can be used to hoist the tower plate.

[0022] Furthermore, a motor end balancing bracket is arranged between the end of the hoisting motor and the hoisting motor fixing plate, thereby ensuring the stability of the hoisting motor during the hoisting process.

[0023] Furthermore, the wire rope assembly includes a motor end wire rope and a tower top wire rope. The two-section wire rope connection method can reduce the labor intensity of employees and save lifting operation time.

[0024] The present invention also provides a construction method for a tower plate hoisting tool of a methanol recovery device, which completes the tower plate hoisting operation by setting a hoisting motor as the power end and a tower top hook as the hoisting fulcrum and a counterweight hook hoisting end on a ground angle iron fixing frame, so that the fixed part is firmly installed, the hoisting angle of the rotating part is flexible and changeable, and the hoisting angle is fixed by two slewing bearing locking bolts. Through the above design, the inspection and maintenance efficiency of the tower plate of the device is improved, while saving working hours, reducing the labor intensity of operators, and greatly reducing the operating risks of operators; by installing the invention in the middle position of two sets of devices 10 meters apart, the application range of the entire hoisting equipment is effectively improved, and one machine is achieved for dual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the tower tray hoisting tool of the methanol recovery device in the present invention;

[0026] Figure 2 A top view of a slewing bearing of a lifting tool in the present invention;

[0027] Figure 3 It is a cross-sectional view of the slewing bearing of the lifting tool in the present invention;

[0028] Figure 4 It is a schematic diagram of the rotation locking structure of the lifting tool in the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the hoisting motor in the present invention;

[0030] Figure 6 It is a top view of the motor mounting fixing plate in the present invention;

[0031] Figure 7 It is a cross-sectional view of the fixing bracket and the fixing plate for hoisting the motor in the present invention;

[0032] In the figure: 1-base; 2-angle iron fixing frame; 3-fixed bottom plate; 4-fixed inner bolt; 5-slewing bearing; 6-hoisting motor fixing plate; 7-fixed outer bolt; 8-fixed angle nut; 9-locking bolt; 10-hoisting motor; 11-motor fixing bracket; 12-motor end wire rope; 13-motor hook; 14-tower top hook; 15-tower top wire rope; 16-connecting hook; 17-counterweight hook; 18-motor support locking bolt; 19-motor end balance bracket; 20-pulley; 21-L-shaped elbow; 22-guardrail platform; 23-methanol recovery device; 24-anchor bolt; 25-tower plate. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0035] The purpose of the present invention is to provide a tower tray hoisting tool for a methanol recovery device to solve the technical problems in the prior art of low maintenance efficiency of the tower tray device, high labor intensity for operators, and high risk of equipment and personnel falling.

[0036] See also Figure 1The present invention provides a methanol recovery device tray hoisting tool, comprising a pulley assembly arranged on an L-shaped elbow 21 at the top of the methanol recovery device 23 and a hoisting assembly located outside the methanol recovery device 23 and arranged on the ground; the hoisting assembly comprises a base fixing assembly, a slewing bearing 5, a hoisting motor assembly and a wire rope assembly; the base fixing assembly is fixedly arranged on the ground, the slewing bearing 5 is rotatably arranged on the top of the base fixing assembly, the hoisting motor assembly is arranged on the slewing bearing 5, one end of the wire rope assembly is wound around the hoisting motor assembly, and the other end is hoisted from the top to the bottom of the methanol recovery device 23 through the pulley assembly on the L-shaped elbow 21 at the top of the methanol recovery device 23, and the hoisting end is used to hoist the tray 25 in the methanol recovery device 23.

[0037] Specifically, the base fixing assembly includes a base 1, an angle iron fixing frame 2 and a fixed bottom plate 3; the base 1 is buried in the ground and flush with the ground, and is connected to the bottom of the angle iron fixing frame 2 through anchor bolts 24; the fixed bottom plate 3 is welded to the top of the angle iron fixing frame 2, and is fixedly threadedly connected to the inner ring of the slewing bearing 5 through a plurality of fixed inner bolts 4, such as Figure 2 shown.

[0038] Specifically, two sets of fixed angle components are welded on the angle iron fixing frame 2 on one side of the slewing bearing 5, which are used to fix and lock the rotation angle of the slewing bearing 5; the fixed angle components include a locking bolt 9 and a fixed angle nut 8, such as Figure 4 As shown, the fixed angle nut 8 is fixed on the angle iron fixing frame 2 on one side of the slewing bearing 5 ; the locking bolt 9 passes through the fixed angle nut 8 and is inserted into the side wall of the slewing bearing 5 .

[0039] Specifically, according to Figure 5 and Figure 6 As shown, the hoisting motor assembly includes a hoisting motor fixing plate 6, a motor fixing bracket 11 and a hoisting motor 10; the bottom end of the hoisting motor fixing plate 6 is fixed to the top of the slewing bearing 5 by a plurality of fixing external bolts 7, as shown in FIG. Figure 3 As shown, according to Figure 7 As shown, the bottom end of the motor fixing bracket 11 is fixed to the top of the hoisting motor fixing plate 6 through the motor support locking bolt 18, the hoisting motor 10 is assembled on the motor fixing bracket 11, and one end of the wire rope assembly is wound around the hoisting motor 10.

[0040] A motor end balancing bracket 19 is further arranged between the end of the hoisting motor 10 and the hoisting motor fixing plate 6 .

[0041] Specifically, the wire rope assembly includes a motor-end wire rope 12 and a tower-top wire rope 15; one end of the motor-end wire rope 12 is wound around the hoisting motor assembly, and the other end is connected to one end of the tower-top wire rope 15, and the other end of the tower-top wire rope 15 passes through the pulley assembly on the L-shaped elbow 21 at the top of the methanol recovery device 23 and is hoisted from the top to the bottom of the methanol recovery device 23, and the hoisting end of the tower-top wire rope 15 is used to hoist the tower plate 25 in the methanol recovery device 23.

[0042] Among them, a motor hook 13 is set at one end of the motor end wire rope 12, and a connecting hook 16 is set at one end of the tower top wire rope 15; a counterweight hook 17 is set at the other end; the motor hook 13 is connected to the connecting hook 16, and the counterweight hook 17 is used to hoist the tower plate 25.

[0043] Among them, the pulley assembly includes a tower top hook 14 and a pulley 22, the tower top hook 14 is set on the L-shaped elbow 21, the pulley 22 is set on the tower top hook 14, and one end of the tower top wire rope 15 passes through the pulley 22 and is hoisted from the top to the bottom of the methanol recovery device 23.

[0044] The methanol recovery device 23 of the present invention is arranged in multiple layers from top to bottom, and a guardrail platform 22 is provided on each layer for operators to hoist the tower tray 25 onto the wire rope assembly on the guardrail platform 22 .

[0045] Example

[0046] The present embodiment provides a tower plate lifting tool for a methanol recovery device, and its structure includes: a base 1, an angle iron fixing frame 2, a fixed bottom plate 3, a fixed inner bolt 4, a slewing bearing 5, a lifting motor fixing plate 6, a fixed outer bolt 7, a fixed angle nut 8, a locking bolt 9, a lifting motor 10, a motor fixing bracket 11, a motor end wire rope 12, a motor hook 13, a tower top hook 14, a tower top wire rope 15, a connecting hook 16, a counterweight hook 17, a motor support locking bolt 18, and a motor end balance bracket 19.

[0047] The cement base (800mm×600mm×500mm) is buried flush with the ground and connected to the angle iron fixing frame (600mm×400mm×350mm) through 4 (22mm×100mm) fixing screws.

[0048] A 10mm thick fixing plate 3 (360mm×260mm) is welded on the upper part of the angle iron fixing frame 2 and 8 holes (M12) are punched and connected to the inner ring of the slewing bearing 5 through 8 fixing inner bolts 4. The slewing bearing 5 is connected to the hoisting motor fixing plate 6 through 8 fixing outer bolts 7.

[0049] The spring washers and flat washers are installed to fix the inner and outer bolts to prevent the bolts from loosening during use; the hoisting motor fixing plate 6 is connected to the motor balance support frame 19 and the hoisting motor fixing plate 6 through 4 12M bolts (shared with 8 fixed outer bolts 7) and 1 8M motor support locking bolt 18.

[0050] The hoisting motor wire rope 12 and the motor hook 13 are connected to the hook 16 at one end of the tower top wire rope 15 (50m), and the other end of the wire rope is connected to the counterweight hook 17. The tower top hook 14 is used as a fulcrum, and the hoisting motor 10 is used to rotate to complete the tower plate hoisting operation.

[0051] Adjust the angle and weld two M22 fixed angle nuts 8 (90° included angle) on the angle iron fixing frame 2 on one side of the angle-adjusting slewing bearing 5. Install the slewing bearing locking bolt 9 and screw it in to fix the wire rope on the lifting motor until the angle is consistent with the angle required for lifting. Screw it out to complete the return of the lifting motor 10.

[0052] The fixed part consists of a cement base 1, an angle iron fixing frame 2, a fixed bottom plate 3 and a fixed inner bolt 4, a fixed angle nut 8 and a locking bolt 9. The movable part consists of a slewing bearing 5, a hoisting motor fixing plate 6, a fixed outer bolt 7, a hoisting motor 10, a motor end wire rope 12, a motor hook 13, a motor fixing bracket 11, a motor support locking bolt 18, and a motor end balance bracket 19. The two parts are connected by a slewing bearing 5 (simple structure, easy equipment maintenance), so that one set of hoisting equipment can complete the hoisting operation of two sets of tower plates.

[0053] The hoisting motor 10 adjusts the reasonable angle of the hoisting tower plate wire rope 12 through the rotation of the slewing bearing 5, and uses the angle fixing nut 8 and the locking bolt 9 on the angle iron fixing frame 2 to fix the position of the slewing bearing 5.

[0054] The two-section wire rope connection part consists of: motor end wire rope 12, motor hook 13, tower top hook 14, tower top wire rope 15, connecting hook 16, and counterweight hook 17; among which the tower top hook 14 can be installed or disassembled at any time as needed, and the tower top wire rope 15, connecting hook 16, and counterweight hook 17 are stored in a tool box on the tower top operating platform when not in operation (quickly connect the lifting wire rope to reduce labor intensity and extend the service life of the lifting components).

[0055] The fixed part of the present invention is composed of a cement base 1 (800mm×600mm×500mm) buried in the ground and flush with the ground and connected to an angle iron fixing frame 2 (600mm×400mm×350mm) through 4 (22mm×100mm) fixing screws (the size of the base and the angle iron fixing frame can be made according to the actual needs of the on-site equipment to meet the hoisting requirements of different equipment); a 10mm thick fixed base plate 3 (360mm×260mm) is welded on the upper part of the angle iron fixing frame 2 and 8 holes (M12) are punched at the center position and are fixedly threadedly connected to the inner ring of the slewing bearing 5 through 8 fixing inner bolts 4 (M12×75mm) (10mm steel plate can bear 3-4 tons).

[0056] The rotating part is connected to the lifting motor fixing plate 6 by a slewing bearing 5 through 8 (M12×75mm) fixed external bolts 7, and 8 holes are punched on the fixing plate 6 of the lifting motor. The fixing internal and external bolts are installed with spring washers and flat washers to prevent the bolts from loosening during use; the motor fixing steel plate 6 (600mm×400mm×8mm) is connected to the base of the lifting motor 10 through 4 12M bolts (shared with 4 holes of the 8 fixed external bolts) and 1 8M straightening bolt, and the motor power end balance bracket 19 is connected to the lifting motor fixing plate 6 through the motor support locking bolt 18 (to achieve five-point support, firm connection and smooth operation).

[0057] The hoisting part is connected to the hook 16 with one end of the hoisting motor wire rope 12 (6mm×60m) and the motor hook 13 and the tower top wire rope 15 (6mm×50m), and the other end of the wire rope is connected to the counterweight hook 17 (5kg to offset the weight of the wire rope from the tower top fulcrum hook to the hoisting motor end when the hook is empty), through the tower top hook 14 (the hook is connected to the reserved lifting ring on the tower top, and one side of the pulley part can be opened to put the tower top wire rope in and then close the open part and complete the self-locking of the fulcrum hook through angle rotation to realize the disassembly and assembly of the tower top wire rope). After the hoisting wire rope is connected, the rotation of the hoisting motor 10 is reasonably controlled according to the needs on site to complete the hoisting tower plate operation.

[0058] Adjust the lifting angle (360 degrees), weld two M22 fixed angle nuts 8 (the included angle is 90° to achieve even and effective locking force) on the outer side angle iron fixing bracket of the slewing bearing 5, install the slewing bearing locking bolt 9, screw in the locking bolt 9 to fix the lifting angle of the lifting motor 10, and loosen it to complete the overall return of the lifting motor 10 (to achieve the maintenance and lifting operations of the tower plates of two sets of methanol recovery units are completed by one set of lifting equipment).

[0059] In the present invention, a slewing bearing 5 is provided, and the slewing bearing fixing inner bolt 4 is used to effectively connect the fixing base plate 3 and the angle iron fixing frame 2; the fixing outer bolt 7 is used to effectively connect the rotating part hoisting motor fixing plate 6, the hoisting motor 10, the motor end wire rope 12, and the motor hook 13; the fixed part is firmly installed, the hoisting angle of the rotating part is flexible and changeable, and the hoisting angle is fixed by two slewing bearing locking bolts 9. Through the above design, the inspection and maintenance efficiency of the tower plate of the device is improved, while saving working hours, reducing the labor intensity of operators, and greatly reducing the operating risks of operators; by installing the invention in the middle position of two sets of devices 10 meters apart, the application range of the entire hoisting equipment is effectively improved, and one machine is achieved for dual use.

[0060] The present invention also provides a construction method of a tower tray hoisting tool for a methanol recovery device, based on the above-mentioned tower tray hoisting tool for a methanol recovery device, comprising the following process:

[0061] The base fixing assembly is fixed on the ground, and the hoisting motor assembly is fixed on the base fixing assembly. One end of the wire rope assembly is wound around the hoisting motor assembly, and the other end is hoisted from the top to the bottom of the methanol recovery device 23 through the pulley assembly on the L-shaped elbow 21 at the top of the methanol recovery device 23;

[0062] The operator hoists the tower tray 25 in the methanol recovery device 23 on the wire rope assembly at the top and bottom of the methanol recovery device 23 respectively, and drives the wire rope assembly to drive the tower tray 25 to descend through the hoisting motor assembly, until the tower tray 25 in the methanol recovery device 23 is hoisted to the ground from high to low, and the tower tray hoisting work is completed.

[0063] In summary, the present invention provides a tower plate lifting tool and construction method for a methanol recovery device, wherein a lifting assembly is located outside the methanol recovery device and is arranged on the ground, wherein the lifting assembly includes a base fixing assembly fixed on the ground, a slewing bearing for rotation and a lifting motor assembly assembled on the slewing bearing, a wire rope assembly is wound around the lifting motor assembly, and the other end of the wire rope assembly is used to lift the tower plates in the methanol recovery device in sequence through a pulley assembly on an L-shaped elbow, thereby saving working hours, reducing the labor intensity of on-site operators, and reducing the operating risks of on-site operators; thereby effectively improving the application scope and work efficiency of the entire device maintenance lifting equipment.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A methanol recovery device tray hoisting tool, characterized in that: The invention comprises a pulley assembly arranged on an L-shaped bend pipe (21) at the top of a methanol recovery device (23) and a hoisting assembly located outside the methanol recovery device (23) and arranged on the ground; the hoisting assembly comprises a base fixing assembly, a slewing bearing (5), a hoisting motor assembly and a wire rope assembly; the base fixing assembly is fixedly arranged on the ground, the slewing bearing (5) is rotatably arranged on the top of the base fixing assembly, the hoisting motor assembly is arranged on the slewing bearing (5), one end of the wire rope assembly is wound around the hoisting motor assembly, and the other end is hoisted along the top to the bottom of the methanol recovery device (23) through the pulley assembly on the L-shaped bend pipe (21) at the top of the methanol recovery device (23), and the hoisting end is used to hoist a tower plate (25) in the methanol recovery device (23).

2. A methanol recovery device tray hoisting tool according to claim 1, characterized in that: The base fixing assembly comprises a base (1), an angle iron fixing frame (2) and a fixing base plate (3); the base (1) is buried in the ground and flush with the ground, and is connected to the bottom of the angle iron fixing frame (2) via anchor bolts (24); the fixing base plate (3) is welded to the top of the angle iron fixing frame (2), and is fixedly threadedly connected to the inner ring of the slewing bearing (5) via a plurality of fixing inner bolts (4).

3. A methanol recovery device tray hoisting tool according to claim 1, characterized in that: Two groups of fixed angle components are welded on the angle iron fixing frame (2) on one side of the slewing bearing (5) for fixing and locking the rotation angle of the slewing bearing (5); the fixed angle components include a locking bolt (9) and a fixed angle nut (8), and the fixed angle nut (8) is fixed on the angle iron fixing frame (2) on one side of the slewing bearing (5); the locking bolt (9) passes through the fixed angle nut (8) and is inserted into the side wall of the slewing bearing (5).

4. A methanol recovery device tray hoisting tool according to claim 1, characterized in that: The hoisting motor assembly comprises a hoisting motor fixing plate (6), a motor fixing bracket (11) and a hoisting motor (10); the bottom end of the hoisting motor fixing plate (6) is fixed to the top of the slewing bearing (5) by a plurality of fixing external bolts (7), the bottom end of the motor fixing bracket (11) is fixed to the top of the hoisting motor fixing plate (6) by a motor support locking bolt (18), the hoisting motor (10) is assembled on the motor fixing bracket (11), and one end of the wire rope assembly is wound around the hoisting motor (10).

5. A methanol recovery device tray hoisting tool according to claim 4, characterized in that: A motor end balancing bracket (19) is also provided between the end of the hoisting motor (10) and the hoisting motor fixing plate (6).

6. A methanol recovery device tray hoisting tool according to claim 1, characterized in that: The steel wire rope assembly comprises a motor end steel wire rope (12) and a tower top steel wire rope (15); one end of the motor end steel wire rope (12) is wound around the hoisting motor assembly, and the other end is connected to one end of the tower top steel wire rope (15); the other end of the tower top steel wire rope (15) passes through a pulley assembly on an L-shaped elbow (21) at the top of a methanol recovery device (23) and is hoisted from the top to the bottom of the methanol recovery device (23); and the hoisting end of the tower top steel wire rope (15) is used to hoist a tower plate (25) in the methanol recovery device (23).

7. A methanol recovery device tray hoisting tool according to claim 6, characterized in that: A motor hook (13) is arranged at one end of the motor end steel wire rope (12), and a connecting hook (16) is arranged at one end of the tower top steel wire rope (15); a counterweight hook (17) is arranged at the other end; the motor hook (13) is connected to the connecting hook (16), and the counterweight hook (17) is used for hoisting the tower plate (25).

8. A methanol recovery device tray hoisting tool according to claim 6, characterized in that: The pulley assembly comprises a tower top hook (14) and a pulley (22), wherein the tower top hook (14) is arranged on an L-shaped elbow (21), and the pulley (22) is arranged on the tower top hook (14), and one end of the tower top steel wire rope (15) passes through the pulley (22) and is hoisted from the top to the bottom of the methanol recovery device (23).

9. A methanol recovery device tray hoisting tool according to claim 1, characterized in that: The methanol recovery device (23) is arranged in multiple layers from top to bottom, and a guardrail platform (22) is provided on each layer for operators to hoist the tower plate (25) onto the wire rope assembly on the guardrail platform (22).

10. A construction method for a methanol recovery device tray hoisting tool, based on a methanol recovery device tray hoisting tool according to any one of claims 1 to 9, characterized in that: The process includes the following: The base fixing assembly is fixed on the ground, and the hoisting motor assembly is fixed on the base fixing assembly, one end of the wire rope assembly is wound around the hoisting motor assembly, and the other end is hoisted from the top to the bottom of the methanol recovery device (23) through the pulley assembly on the L-shaped elbow (21) at the top of the methanol recovery device (23); The operator hoists the tower plates (25) in the methanol recovery device (23) on the wire rope assembly at the top and bottom of the methanol recovery device (23) respectively, and drives the wire rope assembly to drive the tower plates (25) to descend by means of the hoisting motor assembly, until the tower plates (25) in the methanol recovery device (23) are hoisted to the ground in sequence from high to low, and the hoisting work of the tower plates is completed.

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