A kind of reactor large internal parts lifting tool and its assembly method

Abstract

The present invention discloses a large-scale internal parts lifting tool for a reactor and an assembly method thereof, including an internal parts lifting arm assembly, wherein the internal parts lifting arm assembly is clamped and placed on the top of a moving pallet assembly, wherein the moving pallet assembly forms a moving vehicle structure in the reactor cylinder for pushing and installing an internal parts distribution plate. When the present invention is actually installed, the internal parts lifting arm assembly is first supported and fixed on the top of the moving pallet assembly, and then the internal parts distribution plate is fixed to the front end of the internal parts lifting arm assembly, and the internal parts distribution plate is lifted and installed in the reactor cylinder. At this time, the center of the internal parts lifting arm assembly coincides with the center of the reactor cylinder, and the center of the internal parts distribution plate coincides with the center of the internal parts lifting arm assembly. Through the technical solution of the present invention, when the internal parts distribution plate is fixed and moved, its center always coincides with the center of the reactor cylinder. Through this self-correction method of the center, the convenience of the subsequent lifting and installation of the internal parts distribution plate in the reactor cylinder is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical equipment manufacturing, and in particular relates to a large-scale internal component lifting and installation tool for a reactor and an assembly method thereof. Background Art

[0002] Pressure vessels are a type of equipment in the chemical industry that can withstand pressure. They are widely used and play an important role in many sectors such as industry, civil industry, military industry, and many fields of scientific research. In the chemical and petrochemical fields, pressure vessels are mainly used in processes such as heat transfer, mass transfer, and reaction, as well as in the storage and transportation of pressurized gas or liquefied gas; they are also widely used in other industrial and civil fields.

[0003] With the rapid development of my country's refining industry and the improvement of environmental protection requirements, the large-scale and heavy-duty trend of pressure vessel manufacturing is obvious, and the design and manufacturing requirements of "heavy equipment of a great country" are getting higher and higher. As the most important equipment in the hydrogenation unit, the hydrogenation reactor bears the heavy task of converting the most difficult to use heavy part of the petroleum industry-residue oil into light oil by hydrogenation. The large-scale and heavy-duty trend is also most reflected in the tonnage of the hydrogenation reactor. Large-tonnage pressure vessels are often designed with large-tonnage and long-stroke internal parts, such as distribution plates, pipe fittings, etc., resulting in the following problems in the existing technology: 1. For the overall horizontal manufacturing of pressure vessels in the manufacturing plant, how to install the large-tonnage and long-travel distribution plate in place is a huge problem; 2. The installation accuracy control of the distribution plate internal parts in the axial and circumferential directions of the reactor is another problem, because the existing pressure vessel cylinder and the distribution plate internal parts are both circular structures. During installation, the distribution plate and the pressure vessel cylinder need to be aligned with the center first. How to achieve the center correction of the pressure vessel and the distribution plate internal parts during the installation process to ensure the final installation accuracy is also an urgent problem to be solved. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a large-scale internal parts lifting tool for a reactor and an assembly method thereof, which has the advantage of facilitating the installation of internal parts during the manufacture of pressure vessels.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a large-scale internal parts lifting tool for a reactor, comprising an internal parts lifting arm assembly, wherein the internal parts lifting arm assembly is clamped and placed on the top of a movable pallet assembly, and the movable pallet assembly forms a movable vehicle structure for pushing and installing an internal parts distribution plate in the reactor cylinder, the front end of the internal parts lifting arm assembly forms an internal support fixing structure of the internal parts distribution plate, and the rear end of the internal parts lifting arm assembly forms an adaptive auxiliary internal support arm structure, and the top of the movable pallet assembly forms an arm rod supporting and clamping structure with a fixed center.

[0006] Preferably, the internal lifting arm assembly includes a lifting arm, a driving motor and a plurality of slide arms are fixedly provided at the front end of the lifting arm, and a driving disk is rotatably provided at the front end of the lifting arm, a driven gear is fixedly provided at the back of the driving disk, and a plurality of arc-shaped toggle grooves are provided on the driving disk, an active gear is provided on the output shaft of the driving motor, a counterweight block and a fixed platform are fixedly provided at the rear end of the lifting arm, and a sliding seat is slidably provided at the rear end of the lifting arm, a pushing cylinder is fixedly provided at the rear end of the lifting arm, a pushing spring is sleeved at the rear end of the lifting arm, an auxiliary support arm is rotatably provided at the edge of the sliding seat, an auxiliary arm is rotatably provided at the rear end of the lifting arm, the top of the auxiliary arm is rotatably connected to the auxiliary support arm, a universal wheel is provided on the top of the auxiliary support arm, a toggle arm is slidably provided in the slide arm, and an inner support arm and a toggle rod are respectively fixedly provided at both ends of the toggle arm;

[0007] The mobile pallet trolley assembly comprises a mounting frame, vertical arms are fixedly provided on both sides of the mounting frame, a guide rail slot is provided on the vertical arm, and a transverse supporting arm and a bottom bracket are fixedly provided on the top and bottom of the vertical arm respectively, a guide rail slider is slidably provided in the guide rail slot, a main clamping arm is fixedly provided on the guide rail slider, a first roller and a reset chassis are fixedly provided on the top and bottom of the main clamping arm respectively, and a pushing inclined arm is fixedly provided in the middle of the main clamping arm, an L-shaped side arm is fixedly provided in the middle of the vertical arm, a tightening spring is fixedly provided at the end of the L-shaped side arm, V-shaped clamping arms are rotatably provided at both ends of the transverse supporting arm through a central shaft and a bearing, a second roller and a guide rail wheel are respectively provided on the top and bottom of the V-shaped clamping arm, a moving wheel is provided at the bottom of the mounting frame, and a reset spring is provided on the bottom bracket;

[0008] The reactor cylinder comprises a reactor shell, and a mounting guide rail is arranged at the bottom of the inner wall of the reactor shell.

[0009] Preferably, the push spring is arranged between the fixed platform and the sliding seat platform, and the push cylinder forms a resisting push structure against the sliding seat platform when it is extended.

[0010] Preferably, the sliding seat is pushed by the pushing spring and the auxiliary arm cooperates between the auxiliary support arm and the lifting arm. When the sliding seat slides toward the end of the lifting arm, the multiple auxiliary support arms drive the universal wheels to form an elastic pushing, adaptive and internally expandable auxiliary lifting inner support arm structure on the inner wall of the reactor shell.

[0011] Preferably, the driving plate and the driven gear are both rotatably connected to the lifting arm through bearings, the driving gear is meshed with the driven gear, and when the toggle arm slides in the slide slot arm, the toggle rod is inserted in the arc-shaped toggle slot.

[0012] Preferably, through the rotation of the driving disk, the multiple arc-shaped toggle grooves form a toggle force on the multiple toggle rods. At this time, the inner support arms at the ends of the multiple toggle arms form an arm body structure for internal support and fixation when the internal distribution disk is installed.

[0013] Preferably, the two ends of the tensioning spring respectively abut against the L-shaped side arm and the bottom arm body of the V-shaped clamping arm, and through the pushing of the tensioning spring, the guide wheel at the bottom of the V-shaped clamping arm abuts against the side of the pushing inclined arm.

[0014] Preferably, a support arm structure for clamping and fixing the lifting arm is formed between the first roller and the two second rollers, and the center of the circular clamping support arm formed between the first roller and the two second rollers always coincides with the center of the reactor shell.

[0015] Preferably, the bottom of the reset spring abuts against the bottom bracket, and the top of the reset spring abuts against the reset chassis. Through the pushing of the reset spring, the main clamping arm drives the pushing oblique arm and the first roller to move upward on the vertical arm. At this time, through the contact of the guide wheel on the pushing oblique arm, the two second rollers at the top of the two V-shaped clamping arms on the same side are in a synchronously expanded opening structure.

[0016] Preferably, the lifting arm is placed in a clamping support arm structure with a constant center formed between the first roller and the two second rollers, and the moving wheel travels on the mounting guide rail.

[0017] In addition, the present invention also discloses an assembly method of a large internal parts pick-up tool for a reactor, comprising the following steps:

[0018] S1: First, the internal parts lifting arm assembly is placed on the top of the mobile pallet assembly, and the center of the internal parts lifting arm assembly coincides with the center of the reactor cylinder when the internal parts lifting arm assemblies with different diameters are clamped and supported on the top of the mobile pallet assembly by setting a centering clamping structure on the top of the mobile pallet assembly;

[0019] S2: Then the internal parts distribution plate is fixed to one end of the internal parts lifting arm assembly by means of internal support fixing, and in this way, the internal parts distribution plate is fixed to the internal parts lifting arm assembly in a circle center correction manner;

[0020] S3: Then, the push cylinder is retracted to make the resistance force on the sliding seat disappear. At this time, the push spring pushes the multiple auxiliary support arms at the rear end of the loading arm to form an inner supporting auxiliary arm structure in the reactor cylinder. At this time, the moving pallet assembly moves in the reactor cylinder, cooperates with the above-mentioned center correction, and realizes the center-facing loading and docking of the internal parts distribution plate in the reactor cylinder during the forward movement of the moving pallet assembly.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The mobile cart assembly forms a mobile cart structure for pushing and installing the internal parts distribution plate in the reactor cylinder. The front end of the internal parts lifting arm assembly forms an internal support fixing structure of the internal parts distribution plate, and the rear end of the internal parts lifting arm assembly forms an adaptive auxiliary internal support arm structure. The top of the mobile cart assembly forms an arm rod supporting structure with a fixed center. When installing the internal parts distribution plate, the internal parts distribution plate is installed in the reactor cylinder. The internal parts lifting arm assembly is first dragged and fixed on the top of the mobile cart assembly. At this time, a lifting arm is formed between the two second rollers and the first roller. The towing clamping and fixing structure can realize the supporting, clamping and fixing of the internal parts lifting arm assembly on the top of the mobile cart assembly by a one-way release method. At the same time, a supporting and clamping structure with a fixed circle center is formed between the first roller and the two second rollers of the present invention, and the circle center coincides with the circle center of the reactor shell. In this way, when the internal parts distribution plate is installed, the circle center of the internal parts distribution plate coincides with the above-mentioned circle center, ensuring the convenience of the internal parts distribution plate during installation, so that after the internal parts distribution plate is installed in the reactor cylinder, the circle center of the internal parts distribution plate coincides with the circle center of the reactor cylinder;

[0023] Second, when the inner parts distribution plate is fixed, the driving motor drives the driving plate to rotate counterclockwise through the driving gear and the driven gear. At this time, the multiple arc-shaped toggle grooves form an outward toggle force on the toggle rod, cooperating with the linear sliding of the toggle arm in the slide slot arm, that is, when the driving plate rotates counterclockwise, the inner support arms on the top of the multiple toggle arms are in a synchronous outward extension structure. In this synchronous outward extension action, the inner support fixation of the inner parts distribution plate is achieved, and at the same time, the center of the inner parts distribution plate can be made to coincide with the center of the inner parts lifting arm assembly, so as to achieve the inner parts distribution plate. The center-calibrated internal support is fixed, and the universal wheels are driven to extend synchronously through multiple auxiliary support arms, that is, auxiliary support is achieved on the inner wall of the reactor shell, ensuring the stability of the subsequent internal distribution plate when it is moved and installed in the reactor cylinder. At the same time, the internal support method of the multiple auxiliary support arms is converted by the elastic thrust of the thrust spring. When the multiple auxiliary support arms encounter the reactor cylinder with a variable diameter, the multiple auxiliary support arms can form an adaptive auxiliary support arm structure on the inner wall of the reactor shell, thereby solving the support needs of the reactor cylinder with a variable diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 An exploded view of the present invention;

[0026] Figure 3 A three-dimensional diagram of the internal structure of the present invention;

[0027] Figure 4 A three-dimensional diagram of the interior lifting arm assembly and the moving cart assembly of the present invention;

[0028] Figure 5 A three-dimensional diagram of the interior lifting arm assembly of the present invention;

[0029] Figure 6 It is an exploded view of the partial structure of the internal lifting arm assembly of the present invention;

[0030] Figure 7 A three-dimensional diagram of a mobile cart assembly of the present invention;

[0031] Figure 8 An exploded view of the mobile cart assembly of the present invention;

[0032] Fig. 9 is a stereoscopic view of the reactor cylinder of the present invention;

[0033] In the figure: 100, internal lifting arm assembly; 101, lifting arm; 102, driving plate; 103, slide arm; 104, driven gear; 105, driving gear; 106, driving motor; 107, push spring; 108, push cylinder; 109, counterweight; 110, auxiliary arm; 111, universal wheel; 112, auxiliary support arm; 113, sliding seat; 114, fixed platform; 115, arc-shaped toggle groove; 116, toggle arm; 117, inner support arm; 118, toggle rod; 200, mobile cart assembly; 201, mounting frame; 202, moving wheel; 203, vertical arm; 204, bottom bracket; 205, reset spring; 206, guide rail slider; 207, push inclined arm; 208, reset chassis; 209, guide rail wheel; 210, main clamping arm; 211, V-shaped clamping arm; 212, central axis; 213, first roller; 214, second roller; 215, tightening spring; 216, L-shaped side arm; 217, guide rail slide; 218, horizontal support arm; 300, reactor cylinder; 301, reactor shell; 302, installation rail; 400, internal parts distribution plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 9As shown, the present invention provides a large-scale internal component lifting tool for a reactor, including an internal component lifting arm assembly 100, the internal component lifting arm assembly 100 is clamped and placed on the top of a movable pallet assembly 200, the movable pallet assembly 200 forms a movable vehicle structure for pushing and installing an internal component distribution plate 400 in the reactor cylinder 300, the front end of the internal component lifting arm assembly 100 forms an internal support fixing structure of the internal component distribution plate 400, and the rear end of the internal component lifting arm assembly 100 forms an adaptive auxiliary internal support arm structure, and the top of the movable pallet assembly 200 forms an arm rod supporting and clamping structure with a fixed center.

[0036] In a preferred embodiment, please refer to Figure 5 and Figure 6 The internal lifting arm assembly 100 includes a lifting arm 101, a driving motor 106 and a plurality of slide arms 103 are fixedly provided at the front end of the lifting arm 101, and a driving disk 102 is rotatably provided at the front end of the lifting arm 101, a driven gear 104 is fixedly provided at the back of the driving disk 102, and a plurality of arc-shaped toggle grooves 115 are provided on the driving disk 102, a driving gear 105 is provided on the output shaft of the driving motor 106, a counterweight block 109 and a fixed platform 114 are fixedly provided at the rear end of the lifting arm 101, and a driving gear 104 is slidably provided at the rear end of the lifting arm 101 The sliding seat 113, the rear end of the lifting arm 101 is fixedly provided with a push cylinder 108, the rear end of the lifting arm 101 is sleeved with a push spring 107, the edge of the sliding seat 113 is rotatably provided with an auxiliary support arm 112, the rear end of the lifting arm 101 is rotatably provided with an auxiliary arm 110, the top of the auxiliary arm 110 is rotatably connected with the auxiliary support arm 112, the top of the auxiliary support arm 112 is provided with a universal wheel 111, the slide arm 103 is slidably provided with a toggle arm 116, and the two ends of the toggle arm 116 are respectively fixed with an inner support arm 117 and a toggle rod 1 18. The push spring 107 is arranged between the fixed platform 114 and the sliding seat 113. When the push cylinder 108 is extended, it forms a resisting push structure for the sliding seat 113. The push spring 107 pushes the sliding seat 113. At the same time, the auxiliary arm 110 cooperates between the auxiliary support arm 112 and the lifting arm 101. When the sliding seat 113 slides toward the end of the lifting arm 101, the multiple auxiliary support arms 112 drive the universal wheels 111 to form an elastic push-adaptive and internally supported expansion auxiliary support on the inner wall of the reactor shell 301. The internal support arm structure of the lifting arm 101, the driving disk 102 and the driven gear 104 are rotatably connected to the lifting arm 101 through bearings, the driving gear 105 is meshed with the driven gear 104, and when the toggle arm 116 slides in the slide arm 103, the toggle rod 118 is inserted in the arc-shaped toggle groove 115, and through the rotation of the driving disk 102, the multiple arc-shaped toggle grooves 115 form a toggle force on the multiple toggle rods 118. At this time, the internal support arms 117 at the ends of the multiple toggle arms 116 form an arm body structure for internal support and fixing when the internal distribution disk 400 is installed.

[0037] In a preferred embodiment, please refer to Figure 7 and Figure 8 The mobile cart assembly 200 includes a mounting frame 201, and vertical arms 203 are fixedly arranged on both sides of the mounting frame 201. A guide rail slot 217 is provided on the vertical arm 203, and a horizontal support arm 218 and a bottom bracket 204 are fixedly arranged on the top and bottom of the vertical arm 203, respectively. A guide rail slider 206 is slidably arranged in the guide rail slot 217, and a main clamping arm 210 is fixedly arranged on the guide rail slider 206. A first roller 213 and a reset chassis 208 are fixedly arranged on the top and bottom of the main clamping arm 210, respectively. 10 is fixedly provided with a push oblique arm 207 in the middle, an L-shaped side arm 216 is fixedly provided in the middle of the vertical arm 203, a tightening spring 215 is fixedly provided at the end of the L-shaped side arm 216, and V-shaped clamping arms 211 are rotatably provided at both ends of the transverse support arm 218 through the central shaft rod 212 and the bearing, and the top and bottom of the V-shaped clamping arm 211 are respectively provided with a second roller 214 and a guide wheel 209, a moving wheel 202 is provided at the bottom of the mounting frame 201, a reset spring 205 is provided on the bottom bracket 204, and the two ends of the tightening spring 215 are respectively provided with a reset spring 205. The first roller 213 and the second rollers 214 form a support arm structure for clamping and fixing the lifting arm 101, and the center of the circular clamping support arm formed between the first roller 213 and the second rollers 214 always coincides with the center of the reactor shell 301, and the bottom of the reset spring 205 is in contact with the bottom bracket 201. 4, and the top of the reset spring 205 abuts against the reset chassis 208. Through the pushing of the reset spring 205, the main clamping arm 210 drives the pushing inclined arm 207 and the first roller 213 to move upward on the vertical arm 203. At this time, through the abutment of the guide wheel 209 on the pushing inclined arm 207, the two second rollers 214 on the top of the two V-shaped clamping arms 211 on the same side are in a synchronously extended open structure, and the lifting arm 101 is placed between the first roller 213 and the two second rollers 214 to form a clamping support arm structure with a constant center.

[0038] In a preferred embodiment, please refer to Fig. 9 The reactor cylinder 300 includes a reactor shell 301 , and a mounting rail 302 is provided at the bottom of the inner wall of the reactor shell 301 , and the moving wheel 202 moves on the mounting rail 302 .

[0039] An assembly method for a large internal parts pick-up tool for a reactor,

[0040] S1: First, the internal component lifting arm assembly 100 is placed on the top of the mobile pallet assembly 200, and the center of the internal component lifting arm assembly 100 coincides with the center of the reactor cylinder 300 when the internal component lifting arm assembly 100 with different diameters is clamped and supported on the top of the mobile pallet assembly 200 by setting the centering clamping structure on the top of the mobile pallet assembly 200;

[0041] S2: Then the inner component distribution plate 400 is fixed to one end of the inner component lifting arm assembly 100 by means of internal support fixing. In this way, the inner component distribution plate 400 is fixed on the inner component lifting arm assembly 100 in a circle-center correction manner;

[0042] S3: Then, the pushing cylinder 108 is retracted to make the resistance force on the sliding seat 113 disappear. At this time, the multiple auxiliary support arms 112 at the rear end of the loading arm 101 are pushed by the pushing spring 107 to form an internal supporting auxiliary arm structure in the reactor cylinder 300. At this time, the moving cart assembly 200 is moved in the reactor cylinder 300, and the center correction is coordinated with the above-mentioned correction. During the forward movement of the moving cart assembly 200, the internal parts distribution plate 400 is directly connected to the center of the reactor cylinder 300.

[0043] In summary, when installing the internal parts distribution plate 400, that is, installing the internal parts distribution plate 400 in the reactor cylinder 300, firstly, the internal parts lifting arm assembly 100 is dragged and fixed on the top of the mobile cart assembly 200, and in actual use, the lifting arm 101 is placed on the top of the first roller 213, and the lifting arm 101 will press the first roller 213 downward, at this time, the first roller 213 drives the main clamping arm 210 and the top pushing inclined arm 207 to move downward, because the guide wheel 209 abuts against the edge of the top pushing inclined arm 207, and the top pushing inclined arm 207 is set to an inverted triangle structure, when the main clamping arm 210 moves downward, at this time, the top pushing inclined arm 207 forms an outward thrust on the guide wheel 209, and at this time, the V-shaped clamping arm 211 rotates with the central shaft 212 as the center, that is, when the guide wheel 209 moves outward, the V-shaped clamping arm 211 The second roller 214 on the top swings toward the loading arm 101, and at this time, a loading arm 101 towing clamping and fixing structure is formed between the two second rollers 214 and the first roller 213. The internal loading arm assembly 100 can be supported, clamped and fixed on the top of the mobile cart assembly 200 by a one-step method. At the same time, a fixed-center supporting and clamping structure is formed between the first roller 213 and the two second rollers 214 of the present invention, and this center coincides with the center of the reactor shell 301. In this way, when the internal distribution plate 400 is installed, the center of the internal distribution plate 400 coincides with the above-mentioned center, thereby ensuring the convenience of the internal distribution plate 400 during installation, so that after the internal distribution plate 400 is installed in the reactor cylinder 300, the center of the internal distribution plate 400 coincides with the center of the reactor cylinder 300.

[0044] On the basis of the above, that is, after the inner part loading arm assembly 100 is placed on the top of the mobile cart assembly 200, the inner part distribution plate 400 is fixed at one end of the inner part loading arm assembly 100. When the inner part distribution plate 400 is fixed, the driving motor 106 drives the driving plate 102 to rotate counterclockwise through the driving gear 105 and the driven gear 104. At this time, the multiple arc-shaped toggle grooves 115 form an outward toggle force on the toggle rod 118, and cooperate with the linear sliding of the toggle arm 116 in the slide arm 103. That is, when the driving plate 102 rotates counterclockwise, the inner support arms 117 on the top of the multiple toggle arms 116 are in a synchronous outward extension structure. In this synchronous outward extension action, the inner support fixation of the inner part distribution plate 400 is realized, and at the same time, the center of the inner part distribution plate 400 can also coincide with the center of the inner part loading arm assembly 100, thereby realizing the center-calibrated inner support fixation of the inner part distribution plate 400.

[0045] On the basis of the above, in order to ensure the stability of the internal component loading arm assembly 100 driving the internal component distribution plate 400 to move in the reactor barrel 300, the push cylinder 108 is contracted at this time, and the push spring 107 forms a backward push force on the sliding seat 113. During the backward push of the sliding seat 113, the auxiliary arm 110 is limited at this time, and the universal wheels 111 on the top of the multiple auxiliary support arms 112 form an inner support type auxiliary support arm structure, that is, the auxiliary support arm structure in the reactor shell 301 drives the universal wheels 111 through the multiple auxiliary support arms 112. The synchronous outward extension of the wheel 111 realizes auxiliary support on the inner wall of the reactor shell 301, ensuring the stability of the subsequent internal distribution plate 400 when it is moved and installed in the reactor cylinder 300. At the same time, the internal support method of the multiple auxiliary support arms 112 is converted by the elastic thrust of the thrust spring 107. When the multiple auxiliary support arms 112 encounter the variable diameter cylinder of the reactor cylinder 300, the multiple auxiliary support arms 112 can form an adaptive auxiliary support arm structure on the inner wall of the reactor shell 301, thereby solving the support demand of the variable diameter cylinder of the reactor cylinder 300.

[0046] In summary, when the present invention is actually installed, the internal component lifting arm assembly 100 is first supported and fixed on the top of the mobile cart assembly 200, and then the internal component distribution plate 400 is fixed to the front end of the internal component lifting arm assembly 100, and then the mobile cart assembly 200 is pushed to move in the reactor cylinder 300. During the movement, the internal component distribution plate 400 is lifted and installed in the reactor cylinder 300. It should be emphasized that when the internal component lifting arm assembly 100 of the present invention is supported and installed on the mobile cart assembly 200, the internal component lifting arm assembly 100 is lifted and fixed on the top of the mobile cart assembly 200. The center of the arm assembly 100 coincides with the center of the reactor barrel 300. When the internal parts distribution plate 400 is installed on the internal parts lifting arm assembly 100, the center of the internal parts distribution plate 400 coincides with the center of the internal parts lifting arm assembly 100. Through the technical solution of the present invention, when the internal parts distribution plate 400 is fixed and moved, its center always coincides with the center of the reactor barrel 300. Through this self-correction method of the center, the convenience of the internal parts distribution plate 400 when it is subsequently lifted and installed in the reactor barrel 300 is ensured.

[0047] According to another embodiment of the present invention, in order to ensure the walking stability of the internal component lifting arm assembly 100 when it is lifted and installed in the reactor cylinder 300, an adaptive internal support arm structure of an auxiliary support arm 112 can also be provided at the front end of the lifting arm 101, which can realize auxiliary support on the one hand and alleviate the pressure exerted by the gravity of the internal component distribution plate 400 on the front end lifting structure of the internal component lifting arm assembly 100 on the other hand.

[0048] In another embodiment of the present invention, the moving power of the mobile cart assembly 200 can use thrust or traction, which is a conventional technical means and will not be described in detail.

[0049] In another embodiment of the present invention, after the internal parts distribution plate 400 and the reactor barrel 300 are moved and aligned for installation, that is, after the internal parts distribution plate 400 is installed in place, the subsequent fixing method on the reactor barrel 300 is to use an existing motor to drive the accessories on the corresponding workstation for interference fixing, which is a conventional technical means and will not be elaborated.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large reactor internal parts lifting tool, comprising an internal parts lifting arm assembly (100), characterized in that: The internal component lifting arm assembly (100) is clamped and placed on the top of the movable pallet assembly (200); the movable pallet assembly (200) forms a movable vehicle structure for pushing and installing the internal component distribution plate (400) in the reactor cylinder (300); the front end of the internal component lifting arm assembly (100) forms an internal support fixing structure of the internal component distribution plate (400); and the rear end of the internal component lifting arm assembly (100) forms an adaptive auxiliary internal support arm structure; and the top of the movable pallet assembly (200) forms an arm rod supporting clamp structure with a fixed center. The internal component lifting arm assembly (100) comprises a lifting arm (101), a driving motor (106) and a plurality of slide slot arms (103) are fixedly provided at the front end of the lifting arm (101), a driving disc (102) is rotatably provided at the front end of the lifting arm (101), a driven gear (104) is fixedly provided at the back of the driving disc (102), and a plurality of arc-shaped toggle slots (115) are provided on the driving disc (102), a driving gear (105) is provided on the output shaft of the driving motor (106), a counterweight block (109) and a fixed platform (114) are fixedly provided at the rear end of the lifting arm (101), and a sliding seat (115) is slidably provided at the rear end of the lifting arm (101). 13), a push cylinder (108) is fixedly provided at the rear end of the lifting arm (101), a push spring (107) is sleeved at the rear end of the lifting arm (101), an auxiliary support arm (112) is rotatably provided at the edge of the sliding seat (113), an auxiliary arm (110) is rotatably provided at the rear end of the lifting arm (101), the top of the auxiliary arm (110) is rotatably connected to the auxiliary support arm (112), a universal wheel (111) is provided at the top of the auxiliary support arm (112), a toggle arm (116) is slidably provided inside the slide arm (103), and an inner support arm (117) and a toggle rod (118) are respectively fixedly provided at both ends of the toggle arm (116); The mobile cart assembly (200) comprises a mounting frame (201), both sides of which are fixedly provided with vertical arms (203), the vertical arms (203) being provided with guide rail grooves (217), and the top and bottom of the vertical arms (203) being respectively fixedly provided with a transverse support arm (218) and a bottom bracket (204), a guide rail slider (206) being slidably provided in the guide rail groove (217), a main clamping arm (210) being fixedly provided on the guide rail slider (206), a first roller (213) and a reset chassis (208) being respectively fixedly provided on the top and bottom of the main clamping arm (210), and the main A pushing oblique arm (207) is fixedly provided at the middle of the clamping arm (210), an L-shaped side arm (216) is fixedly provided at the middle of the vertical arm (203), a tightening spring (215) is fixedly provided at the end of the L-shaped side arm (216), V-shaped clamping arms (211) are rotatably provided at both ends of the transverse support arm (218) via a central shaft (212) and a bearing, a second roller (214) and a guide wheel (209) are respectively provided at the top and bottom of the V-shaped clamping arm (211), a moving wheel (202) is provided at the bottom of the mounting frame (201), and a return spring (205) is provided on the bottom bracket (204); The reactor cylinder (300) comprises a reactor shell (301), and a mounting guide rail (302) is provided at the bottom of the inner wall of the reactor shell (301); The push spring (107) is arranged between the fixed platform (114) and the sliding seat platform (113), and when the push cylinder (108) is extended, it forms a resisting push structure against the sliding seat platform (113); The pushing spring (107) pushes the sliding seat (113), and the auxiliary arm (110) cooperates with the auxiliary support arm (112) and the lifting arm (101). When the sliding seat (113) slides toward the end of the lifting arm (101), the plurality of auxiliary support arms (112) drive the universal wheels (111) to form an elastic pushing, self-adapting and internally-supported auxiliary lifting inner support arm structure on the inner wall of the reactor shell (301); By rotating the driving disk (102), the plurality of arc-shaped toggling grooves (115) generate a toggling force on the plurality of toggling rods (118), and the inner support arms (117) at the ends of the plurality of toggling arms (116) form an arm structure for internal support and fixation when installing the inner component distribution disk (400); The two ends of the tightening spring (215) respectively abut against the L-shaped side arm (216) and the bottom arm body of the V-shaped clamping arm (211), and through the pushing of the tightening spring (215), the guide wheel (209) at the bottom of the V-shaped clamping arm (211) abuts against the side of the pushing inclined arm (207); A support arm structure for clamping and fixing the lifting arm (101) is formed between the first roller (213) and the two second rollers (214), and the center of a circular clamping support arm formed between the first roller (213) and the two second rollers (214) always coincides with the center of the reactor shell (301); The bottom of the return spring (205) contacts the bottom bracket (204), and the top of the return spring (205) contacts the return chassis (208). Through the push of the return spring (205), the main clamping arm (210) drives the push-up inclined arm (207) and the first roller (213) to move upward on the vertical arm (203). At this time, through the contact of the guide wheel (209) on the push-up inclined arm (207), the two second rollers (214) at the top of the two V-shaped clamping arms (211) on the same side are in a synchronously extended open structure. The lifting arm (101) is placed in a clamping support arm structure with a constant center formed between the first roller (213) and the two second rollers (214), and the moving wheel (202) moves on the installation guide rail (302).

2. A large internal parts loading tool for a reactor according to claim 1, characterized in that: The driving disc (102) and the driven gear (104) are both rotatably connected to the lifting arm (101) via bearings, the driving gear (105) is meshed with the driven gear (104), and when the toggle arm (116) slides in the slide slot arm (103), the toggle rod (118) is inserted into the arc-shaped toggle slot (115).

3. An assembly method of a large internal parts lifting tool for a reactor according to any one of claims 1 to 2, characterized in that: S1: firstly, the internal component lifting arm assembly (100) is placed on the top of the mobile pallet assembly (200), and by setting a centering clamping structure on the top of the mobile pallet assembly (200), when the internal component lifting arm assemblies (100) with different diameters are clamped and supported on the top of the mobile pallet assembly (200), the center of the internal component lifting arm assembly (100) coincides with the center of the reactor cylinder (300); S2: Then the internal component distribution plate (400) is fixed to one end of the internal component lifting arm assembly (100) by means of internal support fixing, and in this way, the internal component distribution plate (400) is fixed to the internal component lifting arm assembly (100) in a circle-center correction manner; S3: Then the push cylinder (108) is retracted to eliminate the resistance force on the sliding seat (113). At this time, the push of the push spring (107) causes the multiple auxiliary support arms (112) at the rear end of the loading arm (101) to form an internal support auxiliary arm structure in the reactor cylinder (300). At this time, the moving cart assembly (200) moves in the reactor cylinder (300) and cooperates with the above-mentioned center correction. During the forward movement of the moving cart assembly (200), the internal component distribution plate (400) is connected to the reactor cylinder (300) in a center-facing loading and docking manner.

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