Dismounting device and method for large gear ring of rotating disc

Abstract

The invention relates to a rotating disc large gear ring dismounting device and method. The rotating disc large gear ring dismounting device comprises a base, stand columns, a moving system, a rotating system and a heating system, and the two stand columns are arranged in the vertical direction and symmetrically arranged on the two sides of the base; the moving system is slidably connected with the two stand columns, the rotating system is connected with the moving system, and workpieces are hung at the bottom of the rotating system. The workpiece comprises a large gear ring and a rotary table which are connected; the heating system is fixed on the base; the moving system is used for driving the rotating system to move in the vertical direction, the rotating system is used for driving a workpiece to rotate, and the heating system is used for heating the workpiece. The moving system drives the rotating system and a suspended workpiece to be integrally suspended, then the rotating system drives the workpiece to rotate, the heating system is matched for multi-directional uniform heating, rapid lossless separation is achieved through the difference of thermal expansion coefficients of a large gear ring and the rotary table, and the problems of scrap loss and process loss caused by traditional cutting disassembly are thoroughly solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of oil drilling, and particularly relates to a rotary table gear ring dismounting device and a dismounting method. BACKGROUND

[0002] In the field of oil exploration, workover rigs and drilling rigs are essential equipment for oil workover and drilling, and the rotary table is an important part of the rotary system of the workover rigs and drilling rigs and is an important component in the drilling rigs for realizing power transmission and distribution, changing the direction of power transmission.

[0003] According to the inspection, maintenance, repair and repair procedures of standard drilling equipment, the rotary table needs to be disassembled when the workover rig is inspected and repaired, and the dismounting of the gear ring for transmitting torque is the most important and complex link. Under normal circumstances, the gear ring and the rotary table are connected by interference, and the interference is large. For example, the interference between the ZP375 type rotary table and the gear ring can reach 1.528 mm, which increases the difficulty of dismounting the gear ring. At present, the gear ring is dismounted by a destructive way of cutting the gear ring, which results in the replacement of the gear ring and the corresponding bevel gear, and the economic loss is large. Therefore, it is necessary to provide a device and a method for dismounting the rotary table gear ring without damage. SUMMARY

[0004] In order to solve the above problems existing in the prior art, the present application provides a rotary table gear ring dismounting device and a dismounting method. The technical problem to be solved by the present application is solved by the following technical scheme: The present application provides a rotary table gear ring dismounting device, comprising a base, a stand, a moving system, a rotating system and a heating system, two stands are arranged symmetrically on both sides of the base along the vertical direction; the moving system is slidingly connected to the two stands, the rotating system is connected to the moving system, and a workpiece is suspended at the bottom of the rotating system; the workpiece comprises a gear ring and a rotary table connected together; the heating system is fixed on the base; wherein the moving system is used to drive the rotating system to move in the vertical direction, the rotating system is used to drive the workpiece to rotate, and the heating system is used to heat the workpiece, and the difference in thermal expansion due to the temperature difference on the contact surface between the gear ring and the rotary table is used to separate the gear ring and the rotary table.

[0005] In an embodiment of the present application, a working area with a T-shaped groove is provided on the base, a T-shaped block is embedded in the T-shaped groove, and the bottom of the heating system is fixed on the working area through the T-shaped block.

[0006] In one embodiment of the present application, the moving system comprises a crossbeam, a screw rod and a moving motor, wherein the crossbeam is respectively slidably connected to two of the columns, the screw rod is connected to the crossbeam, and the moving motor is connected to the screw rod and drives the crossbeam to slide up and down along the columns through the screw rod.

[0007] In one embodiment of the present application, the rotating system comprises a rotating motor, a main shaft, a rotating disc and a suspension system, wherein the main shaft penetrates the crossbeam to connect the rotating motor and the rotating disc; the lower surface of the rotating disc is provided with connection grooves uniformly distributed along the circumference, a connection block is arranged in the connection groove and can move along the connection groove, and the suspension system is arranged on the lower surface of the connection block, and the workpiece is hung on the suspension system.

[0008] In one embodiment of the present application, the suspension system comprises an upper hanging ring, a lower hanging ring and a steel wire rope, wherein the lower surface of the connection block is provided with a threaded hole, the upper hanging ring is fixed on the threaded hole of the connection block, the lower hanging ring is threadedly connected to the large gear ring, and the upper hanging ring and the lower hanging ring are connected through the steel wire rope.

[0009] In one embodiment of the present application, the heating system comprises a main body, adjustable telescopic arms and heating guns, wherein the main body is arranged in the vertical direction, the bottom of the main body is provided with a flange, the T-shaped block is connected through the flange and fixed on the working area, a plurality of adjustable telescopic arms are circumferentially distributed on the outer side wall of the main body, and each of the adjustable telescopic arms is connected with a heating gun at the end away from the main body.

[0010] In one embodiment of the present application, the main body is provided with a plurality of circumferentially distributed ear plates, and a plurality of the adjustable telescopic arms are fixed on the ear plates one by one.

[0011] In one embodiment of the present application, the adjustable telescopic arm comprises two sections of steel plates, the two sections of steel plates are hingedly connected, the steel plate close to the main body is hingedly connected with the ear plate, the steel plate away from the main body is hingedly connected with the heating gun, and the hinge positions between the two sections of steel plates and between the steel plates and the ear plate and the heating gun are all adjusted and locked through bolts, so as to adjust the spatial position of the heating gun.

[0012] In one embodiment of the present application, each of the heating guns is an oxyacetylene heating gun, the main body is internally provided with a cavity, and the gas pipe of the oxyacetylene heating gun passes through the cavity to be connected to an external gas source through the base.

[0013] The present application also provides a method for disassembling the large gear ring of the rotating disc, which adopts the disassembling device for the large gear ring of the rotating disc, and the method comprises the following steps: Step 1: raise the moving system to leave a working area, hoist the connected large gear ring and rotary table to the working area, and make the center of the rotary table coaxial with the center of the heating system; Step 2: lower the crossbeam of the moving system, and connect the large gear ring through the lower lifting ring of the suspension system; Step 3: raise the crossbeam to make the vertical distance between the bottom surface of the rotary table and the working area reach 250-320 mm; Step 4: adjust the heating system so that the plurality of heating guns of the heating system are located directly above the large gear ring; Step 5: drive the large gear ring and the rotary table to rotate synchronously through the rotating system, and set the rotating speed to 6-12 rpm; Step 6: start the heating system, heat the large gear ring through the plurality of heating guns, so that the thermal expansion difference is generated on the contact and fitting surface of the large gear ring and the rotary table due to the temperature difference, and the rotation and heating are continued until the large gear ring and the rotary table are separated, and the disassembly is completed.

[0014] Compared with the prior art, the beneficial effects of the present application are that: The rotary table large gear ring dismounting device of the present application suspends the workpiece through the rotating system, drives the rotating system and the suspended workpiece as a whole to be suspended through the moving system, drives the workpiece to rotate through the rotating system, cooperates with the multi-directional and uniform heating of the heating system, realizes rapid and lossless separation by utilizing the difference in thermal expansion coefficients of the large gear ring and the rotary table, and completely solves the problems of scrap loss and process loss caused by traditional cutting dismounting.

[0015] The present application adopts a modular adjustable suspension system and a heating system, cooperates the heating guns positioned by the articulated telescopic arms through the adjustable connecting blocks and lifting rings, and adapts to different models of rotary tables, thereby significantly reducing the equipment investment cost.

[0016] The rotary table large gear ring dismounting method of the present application adopts the suspension rotation and heating process, controls the rotating speed of the workpiece, ensures that the large gear ring is uniformly heated and forms a significant temperature difference with the rotary table, makes the directional expansion difference between the contact and fitting surfaces of the two, and realizes the automatic separation of the interference fitting surface through the heating operation, thereby improving the process efficiency and cost and realizing the lossless dismounting of the large gear rings of various models of rotary tables.

[0017] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1is a structure schematic view of a rotary table big gear ring dismounting device provided by an embodiment of the present application; Figure 2 is a structure schematic view of a moving system and a rotating system provided by an embodiment of the present application; Figure 3 is a structure schematic view of a heating system provided by an embodiment of the present application. Figure 4 is a structure schematic view of an interference connection between a ZP275 type rotary table big gear ring and a rotary table provided by an embodiment of the present application. Figure 5 is a flow chart of a rotary table big gear ring dismounting method provided by an embodiment of the present application.

[0019] The figure mark: 1-base; 101-work area; 2-stand; 3-moving system; 301-crossbeam; 302-screw rod; 303-moving motor; 4-rotating system; 401-rotating motor; 402-main shaft; 403-rotating disc; 404-upper lifting ring; 405-steel wire rope; 406-lower lifting ring; 5-heating system; 501-main body; 502-adjustable telescopic arm; 503-heating gun; 504-flange; 6-workpiece; 601-big gear ring; 602-rotary table. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined purpose, the following will be described in detail in combination with the drawings and specific embodiments, and a rotary table big gear ring dismounting device and dismounting method according to the present application will be described in detail.

[0021] The foregoing and other technical contents, features and effects of the present application can be clearly presented in the following specific embodiment description with the aid of the drawings. Through the description of the specific embodiments, the technical means and effects taken by the present application to achieve the predetermined purpose can be understood more deeply and specifically. However, the attached drawings are provided for reference and illustration only, and are not used to limit the technical solutions of the present application.

[0022] Embodiment one As shown in Figures 1 to 3 , the figure mark is a structure schematic view of a rotary table big gear ring dismounting device provided by an embodiment of the present application. Figure 1 is a structure schematic view of a moving system and a rotating system provided by an embodiment of the present application; Figure 2 is a structure schematic view of a heating system provided by an embodiment of the present application. Figure 3

[0023] ​In the embodiment, the device for disassembling the large gear ring of the rotary table comprises a base 1, two vertical columns 2, a moving system 3, a rotating system 4 and a heating system 5, the two vertical columns 2 are arranged symmetrically on the two sides of the base 1 along the vertical direction, the moving system 3 is slidably connected to the two vertical columns 2, the rotating system 4 is connected to the moving system 3, the workpiece 6 comprises a large gear ring 601 and a rotary table 602, the heating system 5 is fixed on the base 1, wherein the workpiece 6 is hung at the bottom of the rotating system 4, the moving system 3 is used to drive the rotating system 4 to move along the vertical direction, the rotating system 4 is used to drive the workpiece 6 to rotate, and the heating system 5 is used to heat the workpiece 6, and the large gear ring 601 and the rotary table 602 are separated by using the difference in thermal expansion caused by the temperature difference on the contact matching surface of the large gear ring 601 and the rotary table 602.

[0024] It is worth noting that the device for disassembling the large gear ring of the rotary table can uniformly heat the large gear ring 601 by the cooperation of the rotating system 4 and the heating system 5, and can realize the lossless and rapid separation of the large gear ring 601 and the rotary table 602 by using the difference in thermal expansion caused by the temperature difference in the rapid heating process of the large gear ring 601 and the rotary table 602, so that the device has higher efficiency and lower cost compared with the traditional method.

[0025] In an optional embodiment, the base 1 is provided with a working area 101 with a T-shaped groove, a T-shaped block is embedded in the T-shaped groove, the T-shaped block can slide along the T-shaped groove, and is positioned by limiting blocks or screws after sliding to the required position, and the bottom of the heating system 5 is fixed on the working area 101 by the T-shaped block. For example, the T-shaped grooves are linearly and uniformly distributed. By the sliding cooperation design of the T-shaped groove and the T-shaped block, rapid disassembly and position adjustment are realized, different diameters of rotary tables are adapted, and the equipment modification cost is reduced.

[0026] Preferably, the two vertical columns 2 are symmetrically distributed along the center line of the base 1.

[0027] In an optional embodiment, the moving system 3 comprises a cross beam 301, a lead screw 302 and a moving motor 303, wherein the cross beam 301 is slidably connected to the two vertical columns 2 respectively, the lead screw 302 is connected to the cross beam 301, the moving motor 303 is connected to the lead screw 302 and drives the cross beam 301 to slide up and down along the vertical column 2 through the lead screw 302, since the workpiece 6 is hung at the bottom of the rotating system 4 and the rotating system 4 is fixed on the cross beam 301, under the driving of the moving motor 303, the lead screw 302 rotates, thereby driving the workpiece 6 hung on the rotating system 4 to move up and down through the cross beam 301.

[0028] Preferably, the axis of the lead screw 302 is parallel to the axis of the vertical column 2, the lead screw 302 penetrates through the cross beam 301 and is in threaded transmission with the cross beam 301, the upper end of the lead screw 302 is fixedly connected to the moving motor 303 and is fixed on the vertical column 2 through a support.

[0029] In an alternative embodiment, the rotating system 4 comprises a rotating motor 401, a main shaft 402, a rotating disc 403 and a suspension system, wherein the main shaft 402 penetrates the crossbeam 301 to connect the rotating motor 401 and the rotating disc 403; the lower surface of the rotating disc 403 is provided with connection grooves uniformly distributed along the circumference, a connection block is arranged in the connection groove and can move along the connection groove, and the suspension system is arranged on the lower surface of the connection block, and the workpiece 6 is hung on the suspension system. Specifically, the suspension system comprises an upper hanging ring 404, a steel wire rope 405 and a lower hanging ring 406, wherein the lower surface of the connection block is provided with a threaded hole, the upper hanging ring 404 is fixed on the threaded hole of the connection block, the lower hanging ring 406 is threadedly connected with a gear ring 601, and the upper hanging ring 404 and the lower hanging ring 406 are connected through the steel wire rope 405. Further, the circumferential outer surface of the gear ring 601 is provided with a plurality of hoisting threaded holes, and the lower hanging ring 406 is connected through the hoisting threaded holes. The upper end of the suspension system is connected with the rotating disc 403 through the upper hanging ring 404, and the lower end is connected with the gear ring 601 of the workpiece 6 through the lower hanging ring 406, and after heating, the thermal expansion amount of the interference contact surface between the gear ring 601 and the rotary table 602, i.e. the outer diameter of the gear ring 601 and the inner diameter of the rotary table 602, is not less than 1.255 mm, so that the gear ring 601 and the rotary table 602 are automatically separated due to gravity.

[0030] Preferably, the rotating disc 403 is driven by the main shaft 402 and driven by the rotating motor 401, and the rotating motor 401 can adopt a variable frequency motor or a stepping motor with a power of 5.5 kW.

[0031] Preferably, the connection groove can adopt a T-shaped groove, and correspondingly, the connection block can also adopt a T-shaped block matched with the T-shaped groove, and by adjusting the position of the connection block along the circumference, the hoisting point position is matched with the hoisting threaded hole distribution of the gear ring 601 of different specifications, so as to avoid the workpiece tilting caused by the asymmetric hoisting point and ensure the rotation balance.

[0032] In an alternative embodiment, the heating system 5 comprises a main body 501, an adjustable telescopic arm 502 and a heating gun 503, wherein the main body 501 is arranged in the vertical direction, the bottom of the main body 501 is provided with a flange 504, the flange 504 is connected with a T-shaped block and fixed on the working area 101, a plurality of adjustable telescopic arms 502 are distributed on the outer side wall of the main body 501 along the circumference, and each adjustable telescopic arm 502 is connected with a heating gun 503 at the end away from the main body 501. Specifically, the flange 504 is connected with the T-shaped block by bolts and fixed on the working area 101, and the T-shaped block can slide along the T-shaped groove on the base 1 to adjust the position of the heating system 5 on the working area 101.

[0033] Specifically, the main body 501 has multiple circumferentially distributed ear plates, and multiple adjustable telescopic arms 502 are fixed to the ear plates one by one. Each adjustable telescopic arm 502 comprises two steel plates, which are hinged together. The steel plate closer to the main body 501 is hinged to the ear plates, and the steel plate farther from the main body 501 is hinged to the heating gun 503. The hinge positions between the two steel plates, as well as between the steel plate and the ear plates and the heating gun 503, are adjusted and locked using bolts. For example, each steel plate has round holes at both ends. Through these holes and the bolts serving as hinge axes, the steel plate can be hinged to another steel plate, the ear plates, and the heating gun 503, and can rotate around the axis of the hinge point. By adjusting the tightness of the bolts, the length and position of the adjustable telescopic arm 502 can be adjusted, ultimately enabling the movement and fixation of the heating gun 503, i.e., adjusting the spatial position of the heating gun 503 and controlling its up-down and back-and-forth movement. The hinged design of the two steel plates and the bolt locking structure enable multi-degree-of-freedom adjustment of the spatial position of the heating gun 503, such as pitch or telescopic adjustment, to ensure that the heating gun 503 is positioned directly above the large gear ring 601 during heating. Continuous rotation ensures uniform heating of the large gear ring 601, avoiding local overheating and improving the uniformity of thermal expansion.

[0034] Preferably, each heating gun 503 is an oxyacetylene heating gun, with the gas pipe connected to two ports at the rear of the heating gun 503. The main body 501 has an internal cavity and a pre-drilled notch on its outer wall. The gas pipe of the oxyacetylene heating gun 503 first passes through the notch, then through the cavity, through the through-hole in the center of the base 1, and finally through the rectangular gas pipe channel at the bottom of the base 1 to connect to an external gas source. The heat flux density of the oxyacetylene flame is controllable, enabling rapid heating of the large gear ring 601 in a short time, while avoiding an excessively deep heat-affected zone, ensuring a significant thermal expansion difference between the large gear ring 601 and the turntable 602. Furthermore, the built-in gas pipe channel design prevents external pipeline entanglement, improving operational safety.

[0035] It is worth noting that the present invention adopts a modular adjustable suspension system and heating system 5. Through the synergistic effect of adjustable connecting blocks, lifting rings and heating guns 503 positioned by hinged adjustable telescopic arms 502, it can adapt to different models of turntables and significantly reduce equipment investment costs.

[0036] The rotary gear ring disassembly device of the present invention suspends the workpiece 6 through the rotation system 4, drives the rotation system 4 and the suspended workpiece 6 to be suspended in the air as a whole through the moving system 3, and then drives the workpiece 6 to rotate through the rotation system 4. With the help of the heating system 5 to heat in multiple directions and uniformly, the device utilizes the difference in thermal expansion coefficients between the large gear ring 601 and the turntable 602 to achieve rapid and non-destructive separation, thus completely solving the problems of scrap and process loss caused by traditional cutting and disassembly.

[0037] Example 2 like Figure 5 As shown,Figure 5 is a flow chart of a method for disassembling a large gear ring of a rotary table according to an embodiment of the present application.

[0038] The embodiment provides a method for disassembling a large gear ring of a rotary table, and the method comprises the following steps of: Step 1: lifting the moving system to leave a working area, hoisting the connected large gear ring and rotary table to the working area, and making the center of the rotary table coaxial with the center of the heating system.

[0039] Step 2: lowering the crossbeam of the moving system, and connecting the large gear ring through the lower hanging ring of the suspension system; Step 3: lifting the crossbeam, so that the vertical distance between the bottom surface of the rotary table and the working area is 250-320 mm; Step 4: adjusting the heating system, so that the plurality of heating guns of the heating system are located directly above the large gear ring.

[0040] For example, the positions of the plurality of heating guns can be adjusted through the adjustable telescopic arm 502, so that the plurality of heating guns are located directly above the large gear ring and the heating directions of the plurality of heating guns are aligned with the large gear ring.

[0041] Step 5: driving the large gear ring to rotate synchronously with the rotary table through the rotating system, and setting the rotating speed to 6-12 rpm; Step 6: starting the heating system, heating the large gear ring through the plurality of heating guns, so that the thermal expansion difference is generated on the contact and cooperation surface of the large gear ring and the rotary table due to the temperature difference, and the rotating and heating are continuously performed until the large gear ring is separated from the rotary table, and the disassembling is completed.

[0042] Preferably, without affecting the heating of the large gear ring, a small amount of water can be sprayed from above the rotary table while the large gear ring is heated, so as to increase the temperature difference of the connection position and accelerate the separation of the large gear ring.

[0043] Preferably, when the large gear ring is disassembled, some buffering materials such as wood blocks can be arranged on the base, so as to avoid damage to the workpiece and the working area caused by the falling of the rotary table and the large gear ring.

[0044] As shown in Figure 4 , the present application provides a schematic diagram of an interference connection between a large gear ring and a rotary table of a ZP275 type rotary table. Figure 4

[0045] ​With a specific type of rotary table as an example, the rotary table big gear ring dismounting method and process of the present application is described, it can be understood that the dismounting method adopts the uniform heating method to dismount, the quick separation and non-destructive dismounting of the big gear ring can be realized, and it is not limited to the type of rotary table, such as the non-destructive dismounting of the big gear ring of various types of rotary tables such as ZP175, ZP205, ZP375 and ZP495, each time the cost of 18000-74000 yuan can be saved (the cost saving varies according to the type of rotary table).

[0046] When the separation of the big gear ring and the rotary table is needed, first, the cross beam is raised to leave a working area; then the interconnected big gear ring and rotary table are hoisted to the working area, so that the center of the rotary table is coaxial with the center of the main body of the heating system; the cross beam is lowered to make the lifting rings below the steel wire ropes drop below the big gear ring; the lifting rings below the four steel wire ropes are screwed into the four M20 threaded holes reserved on the big gear ring and tightened; the cross beam is raised to hoist the big gear ring and the rotary table to a distance of 250-320 mm from the workbench; the position of the heating gun of the heating system is adjusted to be directly above the big gear ring; the rotary table and the big gear ring are rotated by the rotating system, and the rotation speed is 6-12 rpm; the four heating guns are turned on to uniformly heat the big gear ring; through the continuous heating and rotation, the big gear ring and the rotary table quickly generate a temperature difference of 200-300 DEG C, so that the thermal expansion amount between the big gear ring and the rotary table, i.e. the difference between the outer diameter of the big gear ring and the inner diameter of the rotary table, is not less than 1.255 mm, and through multiple tests, it is determined that after 14-19 min of continuous rotation and heating, the big gear ring and the rotary table are naturally separated due to gravity, and finally the big gear ring and the rotary table are recovered.

[0047] It can be understood that the rotary table big gear ring dismounting method provided by the second embodiment of the present application uses the rotary table big gear ring dismounting device provided by the first embodiment, and therefore has similar beneficial effects as the first embodiment. For technical details not disclosed in the method embodiment of the present application, reference can be made to the description of the device embodiment for understanding.

[0048] The rotary table big gear ring dismounting method of the present application adopts the suspended rotation and heating process, controls the rotation speed of the workpiece, ensures that the big gear ring is uniformly heated and forms a significant temperature difference with the rotary table, causes directional expansion difference between the contact surfaces of the two, and realizes automatic separation of the interference fit surface through heating operation, improves process efficiency and cost, and realizes non-destructive dismounting of big gear rings of various types of rotary tables.

[0049] It is to be understood that the terminology used herein such as first and second, and the like, is only to distinguish one from another without prejudice to either and is not necessarily used in a sequence. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. The terms "connected" and "coupled" as well as "linking" or variations thereof are not restricted to a physical or mechanical connections or relationships. Rather, any of these terms can mean any connection or relationship between components, systems, or modules, which is capable of being either a direct connection, an indirect connection through one or more other components or modules, or an indirect connection through some type of medium.

[0050] The above description is further to the application in conjunction with specific preferred embodiments and should not be construed as limiting the application to these descriptions. Those skilled in the art who are familiar with the technical field of the application can make some simple deductions or substitutions without departing from the concept of the application, and all of these should be considered within the protection scope of the application.

Claims

1. A carousel gear demounting device, characterized in that, Comprise: Base, column, moving system, rotating system and heating system, Two said column is arranged in vertical direction, and symmetrically arranged in both sides of the base; The moving system is slidably connected to two said column, the rotating system is connected to the moving system, and the workpiece is hung at the bottom of the rotating system; The workpiece comprises a large gear ring and a rotary table connected; The heating system is fixed on the base; Wherein, the moving system is used for driving the rotating system to move along the vertical direction, the rotating system is used for driving the workpiece to rotate, and the heating system is used for heating the workpiece, and the difference of thermal expansion amount on the contact surface of the large gear ring and the rotary table due to temperature difference is used to separate the large gear ring and the rotary table.

2. The carousel gear demounting device according to claim 1, characterized in that The base is provided with a working area with a T-shaped groove, and a T-shaped block is embedded in the T-shaped groove. The bottom of the heating system is fixed on the working area through the T-shaped block.

3. The carousel gear demounting device according to claim 1, characterized in that The moving system comprises a crossbeam, a lead screw and a moving motor, wherein the crossbeam is slidably connected to two columns, the lead screw is connected to the crossbeam, and the moving motor is connected to the lead screw and drives the crossbeam to slide up and down along the column.

4. The carousel gear demounting device according to claim 3, characterized in that The rotating system comprises a rotating motor, a main shaft, a rotating disc and a suspension system, wherein the main shaft penetrates the crossbeam to connect the rotating motor and the rotating disc; The lower surface of the rotating disc is provided with a plurality of connection grooves uniformly distributed along the circumference, a connection block is arranged in the connection groove and can move along the connection groove, and the suspension system is arranged on the lower surface of the connection block. The workpiece is hung on the suspension system.

5. The carousel gear demounting device according to claim 4, characterized in that The suspension system comprises an upper hanging ring, a lower hanging ring and a steel wire rope, wherein the lower surface of the connection block is provided with a threaded hole, the upper hanging ring is fixed on the threaded hole of the connection block, the lower hanging ring is threadedly connected to the large gear ring, and the upper hanging ring and the lower hanging ring are connected by the steel wire rope.

6. The carousel gear demounting device according to claim 2, characterized in that The heating system comprises a main body, an adjustable telescopic arm and a heating gun, wherein the main body is arranged in vertical direction, the bottom of the main body is provided with a flange, the T-shaped block is connected through the flange and fixed on the working area, and a plurality of adjustable telescopic arms are distributed on the outer side wall of the main body. Each end of the adjustable telescopic arm away from the main body is connected with a heating gun.

7. The carousel gear demounting device according to claim 6, characterized in that The main body is provided with a plurality of circumferentially distributed ear plates, and a plurality of adjustable telescopic arms are fixed on the ear plates one by one.

8. The carousel gear demounting device according to claim 7, characterized in that The adjustable telescopic arm comprises two steel plates, which are hingedly connected between the two steel plates. The steel plate close to the main body is hingedly connected with the ear plate, and the steel plate away from the main body is hingedly connected with the heating gun. The hinge positions between the two steel plates, the steel plate and the ear plate and the heating gun are all adjusted and locked by bolts to adjust the spatial position of the heating gun.

9. The carousel gear demounting device according to claim 6, characterized in that Each of the heating guns is an oxyacetylene heating gun, the main body is provided with a cavity, and the gas pipe of the oxyacetylene heating gun passes through the cavity and is connected to the external gas source through the base.

10. A method of disassembling a carousel gear ring, characterized in that, The method comprises: Step 1: raise the moving system to leave a working area, hoist the connected ring gear and the rotary table to the working area, and make the center of the rotary table coaxial with the center of the heating system; Step 2: lower the crossbeam of the moving system, and connect the ring gear through the lower hanger ring of the suspension system; Step 3: raise the crossbeam, and make the vertical distance between the bottom surface of the rotary table and the working area reach 250-320 mm; Step 4: adjust the heating system, and make the plurality of heating guns of the heating system all be located directly above the ring gear; Step 5: drive the ring gear and the rotary table to rotate synchronously through the rotating system, and set the rotating speed to 6-12 rpm; Step 6: start the heating system, heat the ring gear through the plurality of heating guns, so that the thermal expansion difference is generated on the contact and matching surface of the ring gear and the rotary table due to the temperature difference, and the rotating and heating are continuously performed until the ring gear and the rotary table are separated, and the disassembly is completed.

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