Construction method for replacing steel wire rope of dry quenching elevator

Abstract

The invention provides a construction method for replacing a steel wire rope of a dry quenching elevator. The construction method comprises the following steps: mounting a portal frame and an electric hoist as auxiliary facilities; and the four electric hoists are used for disassembling and installing the balance arm fixed ends of the four steel wire ropes at the same time, and disassembling and installing the free ends of the steel wire ropes on the roller. Compared with an existing construction method, the construction method has the advantages that the two portal frames are mounted on one side of the roller of the machine room of the elevator, the two electric hoists are mounted on each portal frame, and the four steel wire ropes are dismounted and mounted at the same time under the assistance of the four electric hoists, so that the construction process is more efficient; the hoisting stroke of the auxiliary hoisting tool used in the construction method is short, and the construction safety is higher.

Description

Technical Field

[0001] The invention relates to the technical field of coking equipment maintenance, and in particular to a construction method for replacing a steel wire rope of a dry coke quenching hoist. Background Art

[0002] The CDQ elevator runs on the top of the CDQ oven. It is a special lifting equipment that lifts the rotating coke tank from the tank car to the top of the CDQ oven and loads the red coke into the CDQ oven for dry quenching. Figure 1 and Figure 2 The dry coke quenching hoist mainly includes the hoisting mechanism 1, the running mechanism 2, the frame 3, the buffer device 4, the coke pot hoist 5 and other components, wherein the hoisting mechanism also includes the hoisting reducer 11, the drum 12, the wire rope 13, the clutch 14, the brake 15, the planetary reducer 16, the motor 17 and other complex components. These components are distributed in five layers, the hoisting reducer 11 and the drums 12 on both sides are located on the fifth layer of the hoist, the coke pot hoist 5 and its movable pulley wheel group 18 are located on the second layer of the hoist; the hoisting wire rope 13 passes through the movable pulley wheel group 18 on the second layer of the hoist and is wound on the drum 12 on the fifth layer of the hoist for use, and a wire rope balance arm 131 and its fixed end 132 are provided on the upper side of the drum 12. The wire rope of the dry coke quenching hoist is a key and vulnerable part in the hoist, and its reliability is directly related to the safety of personnel and equipment, and affects the normal production and output of dry coke quenching. The normal service life of the wire rope is about 1 year, and 4 wire ropes are replaced each time. Since the hoist is located high above the ground and the wire rope is long, it is difficult to replace. Figure 2 The traditional method of replacing the steel wire rope of the CDQ hoist is to install a winch 6 on the first floor of the hoist, and replace the steel wire ropes of the hoist one by one with the assistance of a fixed pulley hanging under the balance beam 7. The efficiency is low, and the replacement time is generally more than 10 hours, which has a great impact on production. Therefore, it is necessary to develop a faster and safer construction method for replacing the steel wire rope of the CDQ hoist.

[0003] At present, some methods for replacing the steel wire rope of the dry coke quenching hoist have been disclosed. For example, the Chinese invention patent application with the publication number CN114920159A discloses a method for quickly replacing the steel wire rope of the dry coke quenching hoist. By installing auxiliary facilities, making full preparations, and replacing the old and new steel wire ropes, the maintenance time can be shortened, the impact on the dry coke quenching production and output can be reduced, and the safety of the equipment can be improved. However, this solution still replaces the steel wire ropes one by one, which is still not efficient, and the hoisting distance of the auxiliary facilities is far, and the safety is poor. Summary of the invention

[0004] In view of the above-mentioned defects in the prior art, the present invention provides a construction method for replacing the steel wire rope of a dry coke quenching elevator. Two gantries are installed on one side of the drum in the machinery room of the elevator, and two electric hoists are installed on each gantry. Four steel wire ropes are removed and installed at the same time with the assistance of four electric hoists. The construction process is more efficient and safe, which saves time for production.

[0005] To achieve the above object, the present invention provides a construction method for replacing a steel wire rope of a dry coke quenching hoist, which is characterized by comprising the following steps:

[0006] Step S101, transport four new steel wire ropes to the site in advance, unroll them, measure the same length as the old steel wire rope to be replaced, and cut them with a cutting machine;

[0007] Step S102, combining the size of the reduction gear drum, welding two gantries on the outside of the drum of the fifth floor of the elevator with channel steel;

[0008] Step S103, welding four electric hoist bases to the lower end of the crossbeam of the gantry; and installing four electric hoists on the electric hoist bases with bolts;

[0009] Step S104, laying the power lines of the four electric hoists in accordance with the principle of horizontal and vertical; connecting each electric hoist with a control operation switch, and numbering and debugging them separately;

[0010] Step S105: After the electric hoist is debugged without any problem, contact the production department to shut down the hoist;

[0011] Step S106, using four electric hoists to simultaneously remove the fixed ends of the balance arms of the four old steel wire ropes of the hoist drum;

[0012] Step S107, using four electric hoists to simultaneously install the balance arm fixed ends of four new steel wire ropes of the hoist drum;

[0013] Step S108, using four electric hoists to simultaneously remove the free ends of the four old steel wire ropes of the hoist drum;

[0014] Step S109, using four electric hoists to simultaneously install the free ends of four new steel wire ropes of the hoist drum;

[0015] Step S110, debugging and trial running four new steel wire ropes;

[0016] There is no limitation on the execution order between step S101 and steps S102 to S104.

[0017] Furthermore, the gantry is 2.3 meters long and 1.8 meters high, and is made of 16# channel steel.

[0018] Furthermore, the electric hoist base is made of a 12 mm thick steel plate with a length of 350 mm and a width of 150 mm. Four mounting holes are opened in the steel plate according to the installation requirements of the electric hoist; the lifting weight of the electric hoist is 1.5 tons.

[0019] Furthermore, the step S106 includes the following steps:

[0020] Step S601, tying the balance arm fixed ends of four old steel wire ropes with the rope ends of the four electric hoists;

[0021] Step S602, tighten the four electric hoists to make the rope ends of the electric hoists take force;

[0022] Step S603, remove the wire rope connecting pin shaft at the fixed end of the balance arm, release the four electric hoists, put the four lifting wire ropes on the ground for cutting, and load them onto a truck for transportation.

[0023] Furthermore, the step S107 includes the following steps:

[0024] Step S701, the electric hoist lifts the fixed ends of the balance arms of the four new steel ropes to the predetermined positions on the fifth floor of the hoist;

[0025] Step S702: Install the wire rope connecting pin at the fixed end of the balance arm.

[0026] Furthermore, the step S108 includes the following steps:

[0027] Step S801, removing the free end clamping plate bolts of four old steel wire ropes;

[0028] Step S802: lowering the four old steel wire ropes to the second floor of the hoist by using the four electric hoists;

[0029] Step S803, untie the rope clamp of the old steel wire rope, and let the free end of the old steel wire rope pass through the movable pulley wheel set on the second floor of the elevator and fall to the ground under the action of gravity.

[0030] Furthermore, the step S109 includes the following steps:

[0031] Step S901, fixing the free ends of four new steel wire ropes and the traction ropes of the four electric hoists together with rope clamps;

[0032] Step S902, the traction ropes of the four electric hoists are tightened simultaneously, and the free ends of the four new steel wire ropes are hoisted to the second floor of the hoist;

[0033] Step S903, untie the rope clamp, and with the help of manpower, pass the free ends of four new steel ropes through the movable pulley wheel set on the second floor of the hoist;

[0034] Step S904, re-fixing the free ends of the four new steel wire ropes and the traction ropes of the four electric hoists together with rope clamps;

[0035] Step S905: tighten the four electric hoists at the same time, lift the free ends of the four new steel wire ropes to their original positions, and install the pressure plates of the four new steel wire ropes.

[0036] Compared with the prior art, the above invention has the following advantages or beneficial effects:

[0037] Compared with the existing construction method, the construction method of the present invention is to install two gantries on one side of the drum in the machinery room of the hoist, install two electric hoists on each gantries, and remove and install four steel wire ropes at the same time with the assistance of four electric hoists, so that the construction process is more efficient and saves time for production. The auxiliary hoist used in the construction method of the present invention has a short hoisting stroke, higher construction safety and stronger operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn completely to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0039] Figure 1 This is a schematic diagram of the structure of the dry quenching coke elevator;

[0040] Figure 2 This is a structural diagram of the replacement of the traditional hoist wire rope;

[0041] Figure 3 A flowchart of the replacement construction of a hoist wire rope according to an embodiment of the present invention;

[0042] Figure 4 It is a three-dimensional structural schematic diagram of the replacement construction of the hoist wire rope according to one embodiment of the present invention;

[0043] Figure 5 It is a partial side structural schematic diagram of the hoist wire rope replacement construction according to one embodiment of the present invention;

[0044] Figure 6 It is a schematic diagram of the elevation structure of a gantry according to an embodiment of the present invention;

[0045] Figure 7 It is a schematic diagram of the planar structure of an electric hoist base according to an embodiment of the present invention;

[0046] Among them, 1. lifting mechanism; 2. traveling mechanism; 3. frame; 4. buffer device; 5. coke drum hoist; 6. winch; 7. balance beam; 11. lifting reducer; 12. drum; 13. wire rope; 14. clutch; 15. brake; 16. planetary reducer; 17. motor; 18. movable pulley wheel set; 131. balance arm; 132. balance arm fixed end; 81. gantry; 82. electric hoist base; 83. electric hoist. DETAILED DESCRIPTION

[0047] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be understood that all of these exemplary embodiments described are only partial embodiments and examples of the present invention, rather than all of them. On the contrary, these exemplary embodiments are provided so that those skilled in the art can more thoroughly understand the present disclosure and can more completely convey the technical content of the present disclosure to those skilled in the art.

[0048] The execution order of actions, steps, etc. in the devices and methods shown in the claims, descriptions and drawings can be implemented in any order as long as there is no special explicit limitation on the order and as long as the output of the previous processing is not used in the subsequent processing. In addition, the term "comprises" and any variation thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0049] Example

[0050] See also Figures 3 to 5 This embodiment provides a construction method for replacing a steel wire rope of a dry coke quenching hoist, comprising the following steps:

[0051] Step S101: four new steel wire ropes are rolled up and transported to the site in advance, and the new steel wire ropes are unrolled, and the lengths thereof are measured to be the same as those of the old steel wire ropes to be replaced, and the new steel wire ropes are cut with a cutting machine.

[0052] Step S102, combining the size of the elevator reducer drum, using channel steel to weld two gantries 81 on the outside of the drum 12 of the fifth floor of the elevator.

[0053] Step S103, welding four electric hoist bases 82 to the lower end of the crossbeam of the gantry 81; and installing four electric hoists 83 on the electric hoist bases 82 with bolts.

[0054] Step S104, laying the power lines of the four electric hoists 83 according to the principle of horizontal and vertical; each electric hoist 83 is connected to a control operation switch, and is numbered and debugged separately.

[0055] Step S105: Contact production to shut down the elevator.

[0056] Step S106: Use four electric hoists 83 to simultaneously remove the balance arm fixed ends 132 of the four old steel wire ropes of the hoist drum 12. As a preferred technical solution, further: Step S106 includes the following steps:

[0057] Sub-step S601, using the rope ends of four electric hoists 83 to tie the balance arm fixed ends 132 of four old steel wire ropes;

[0058] Sub-step S602, tighten the four electric hoists 83 to make the rope ends of the electric hoists 83 take force;

[0059] Sub-step S603, remove the wire rope connecting pin shaft at the fixed end 132 of the balance arm, release the four electric hoists 83, put the four lifting wire ropes on the ground for cutting, and load them onto a truck for transportation.

[0060] Step S107, using four electric hoists 83 to simultaneously install the balance arm fixed ends 132 of the four new steel wire ropes of the hoist drum 12. As a preferred technical solution, further: the step S107 includes the following steps:

[0061] Sub-step S701, the electric hoist 83 lifts the balance arm fixed ends 132 of the four new steel wire ropes to the predetermined position on the fifth floor of the hoist;

[0062] Sub-step S702: Install the wire rope connecting pin (not shown in the figure) at the fixed end of the balance arm.

[0063] Step S108: Use four electric hoists 83 to simultaneously remove the free ends of the four old steel wire ropes of the hoist drum 12. As a preferred technical solution, further: Step S108 includes the following steps:

[0064] Sub-step S801, removing the free end clamping plate bolts of four old steel wire ropes;

[0065] Sub-step S802: lowering the four old steel wire ropes 13 to the second floor of the hoist by using the four electric hoists 83;

[0066] Sub-step S803, untie the rope clamp of the old steel wire rope, and let the free end of the old steel wire rope pass through the movable pulley wheel set 18 on the second floor of the elevator and fall to the ground under the action of gravity.

[0067] Step S109: Use four electric hoists 83 to simultaneously install the free ends of four new steel wire ropes of the hoist drum 12. As a preferred technical solution, further: Step S109 includes the following steps:

[0068] Sub-step S901, fixing the free ends of four new steel wire ropes and the traction ropes of four electric hoists 83 together with rope clamps;

[0069] Sub-step S902, the traction ropes of the four electric hoists 83 are tightened simultaneously, and the free ends of the four new steel wire ropes 13 are hoisted to the second floor of the hoist;

[0070] Sub-step S903, untie the rope clamp, and with the help of manpower, pass the free ends of the four new steel ropes 13 through the movable pulley wheel set 18 on the second floor of the hoist;

[0071] Sub-step S904, re-fixing the free ends of the four new steel wire ropes and the traction ropes of the four electric hoists 83 together with rope clamps;

[0072] Sub-step S905 , the four electric hoists 83 are tightened simultaneously, the free ends of the four new steel wire ropes 13 are hoisted to the original positions, and the pressure plates of the four new steel wire ropes 13 are installed.

[0073] Step S110, debugging and trial running four new steel wire ropes;

[0074] It can be understood that there is no limitation on the execution order between step S101 and steps S102 to S104.

[0075] See also Figure 6 and Figure 7 As a preferred technical solution, the gantry 81 is 2.3 meters long and 1.8 meters high, and is made of 16# channel steel. The electric hoist base 82 is made of a 12mm thick steel plate with a length of 350mm and a width of 150mm. Four mounting holes 84 are opened in the steel plate according to the installation requirements of the electric hoist 83; the lifting weight of the electric hoist 83 is 1.5 tons, and it can be used to replace the hoist wire rope with a diameter of φ33.5mm.

[0076] In summary, the present invention provides a construction method for replacing the steel wire rope of the dry quenching hoist, including installing a gantry and an electric hoist as auxiliary facilities; using four electric hoists to simultaneously perform the steps of removing the fixed end of the balance arm of the four steel wire ropes, installing the fixed end of the balance arm, removing the free end of the steel wire rope on the drum, and installing the free end. Compared with the existing construction method, the present invention installs two gantries on one side of the drum in the machinery room of the hoist, and two electric hoists are installed on each gantry. The four steel wire ropes are removed and installed at the same time with the assistance of the four electric hoists, and the construction process is more efficient; the auxiliary hoist used in the construction method has a short hoisting stroke and higher construction safety.

[0077] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0078] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple 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 solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A construction method for replacing a steel wire rope of a dry coke quenching hoist, characterized in that: The following steps are involved: Step S101, transport four new steel wire ropes to the site in advance, unroll them, measure the same length as the old steel wire rope to be replaced, and cut them with a cutting machine; Step S102, combining the size of the reduction gear drum, welding two gantries on the outside of the drum of the fifth floor of the elevator with channel steel; Step S103, welding four electric hoist bases to the lower end of the crossbeam of the gantry; and installing four electric hoists on the electric hoist bases with bolts; Step S104, laying the power lines of the four electric hoists in accordance with the principle of horizontal and vertical; connecting each electric hoist with a control operation switch, and numbering and debugging them separately; Step S105, contact the production department to shut down the elevator; Step S106, using four electric hoists to simultaneously remove the fixed ends of the balance arms of the four old steel wire ropes of the hoist drum; Step S107, using four electric hoists to simultaneously install the balance arm fixed ends of four new steel wire ropes of the hoist drum; Step S108, using four electric hoists to simultaneously remove the free ends of the four old steel wire ropes of the hoist drum; Step S109, using four electric hoists to simultaneously install the free ends of four new steel wire ropes of the hoist drum; Step S110, debugging and trial running four new steel wire ropes; There is no limitation on the execution order between step S101 and steps S102 to S104.

2. A construction method for replacing a steel wire rope of a dry coke quenching hoist according to claim 1, characterized in that: The gantry is 2.3 meters long and 1.8 meters high and is made of 16# channel steel.

3. A construction method for replacing a steel wire rope of a dry coke quenching hoist according to claim 2, characterized in that: The electric hoist base is made of a 12mm thick steel plate with a length of 350mm and a width of 150mm. Four installation holes are opened in the steel plate according to the installation requirements of the electric hoist. The lifting weight of the electric hoist is 1.5 tons.

4. A construction method for replacing a steel wire rope of a dry coke quenching hoist according to claim 1, characterized in that: The step S106 comprises the following steps: Step S601, tying the balance arm fixed ends of four old steel wire ropes with the rope ends of the four electric hoists; Step S602, tighten the four electric hoists to make the rope ends of the electric hoists take force; Step S603, remove the wire rope connecting pin shaft at the fixed end of the balance arm, release the four electric hoists, put the four lifting wire ropes on the ground for cutting, and load them onto a truck for transportation.

5. A construction method for replacing a steel wire rope of a dry coke quenching hoist according to claim 4, characterized in that: The step S107 includes the following steps: Step S701, the electric hoist lifts the fixed ends of four new steel ropes to the predetermined positions on the fifth floor of the hoist; Step S702: Install the wire rope connecting pin at the fixed end of the balance arm.

6. A construction method for replacing a steel wire rope of a dry coke quenching hoist according to claim 5, characterized in that: The step S108 comprises the following steps: Step S801, removing the free end clamping plate bolts of four old steel wire ropes; Step S802: lowering the four old steel wire ropes to the second floor of the hoist by using the four electric hoists; Step S803, untie the rope clamp of the old steel wire rope, and let the free end of the old steel wire rope pass through the movable pulley wheel set on the second floor of the elevator and fall to the ground under the action of gravity.

7. A construction method for replacing a steel wire rope of a dry coke quenching hoist according to claim 6, characterized in that: The step S109 includes the following steps: Step S901, fixing the free ends of four new steel wire ropes and the traction ropes of the four electric hoists together with rope clamps; Step S902, the traction ropes of the four electric hoists are tightened simultaneously, and the free ends of the four new steel wire ropes are hoisted to the second floor of the hoist; Step S903, untie the rope clamp, and with the help of manpower, pass the free ends of four new steel ropes through the movable pulley wheel set on the second floor of the hoist; Step S904, re-fix the free ends of the four new steel wire ropes and the traction ropes of the four electric hoists together with rope clamps; Step S905: tighten the four electric hoists at the same time, lift the free ends of the four new steel wire ropes to their original positions, and install the pressure plates of the four new steel wire ropes.

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