Horizontal end cap mounting apparatus and method of mounting

Abstract

The application provides a horizontal end cover mounting device and a mounting method thereof, and relates to the technical field of pressure vessel assembly. The horizontal end cover mounting device comprises a support frame, a rotating mechanism connected to the support frame, wherein the rotating mechanism comprises a rotating disc, and the axis of the rotating disc is parallel to the horizontal plane; a bolt alignment mechanism connected to the inner ring of the rotating disc, wherein the bolt alignment mechanism comprises a cylinder; a bolt stretcher connected to the inner ring of the rotating disc; and a positioning mechanism for moving the support frame, wherein four positioning mechanisms are symmetrically arranged on the two sides of the support frame, and each positioning mechanism is used for adjusting the vertical position and the horizontal position of the corresponding position of the support frame. The four positioning mechanisms can meet the requirements of large load and large movement stroke of the support frame, the bolt alignment mechanism can realize the auxiliary guiding and penetrating function of the bolt, the bolt stretcher can realize the stretching and pre-tightening function of the bolt, and the mounting efficiency of the horizontal end cover and the bolt is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure vessel assembly, in particular to a horizontal end cover mounting device and a mounting method thereof. BACKGROUND

[0002] The horizontal nuclear reactor is a special type of nuclear reactor, and the installation of the reactor pressure vessel end cover is an important link in the construction and operation of nuclear power plants. The reactor pressure vessel end cover is located at the top and bottom of the reactor pressure vessel, and plays a sealing and supporting role for the reactor nuclear fuel assembly.

[0003] Due to the large size of the horizontal end cover, it needs to be adjusted to fit the flange surface of the reactor pressure vessel before the bolt installation step. The existing horizontal end cover mounting device with six degrees of freedom adjustment in space adopts a support frame placed on several universal ball bearings, and uses a jackscrew to push the support frame to move on the several universal ball bearings. The contact surface between the support frame and the universal ball bearing is inclined, the universal ball bearing is installed in a sliding block, and the movement of the sliding block drives the movement of the universal ball bearing, thereby adjusting the elevation of the support frame. The movement of the support frame and the adjustment of the elevation of the support frame by adjusting the jackscrew can realize the adjustment of the support frame in six degrees of freedom in space. However, the above-mentioned method not only cannot meet the requirements of large load and large movement stroke of the support frame, but also cannot solve the problems of bolt penetration and bolt pre-tightening, which affects the installation efficiency of the bolt. SUMMARY

[0004] The problem solved by the present application is how to improve the installation efficiency of the horizontal end cover and the bolt.

[0005] To at least partially solve the above problems, in a first aspect, the present application provides a horizontal end cover mounting device, comprising a support frame; a rotary mechanism connected to the support frame, the rotary mechanism comprising a turntable, and the axis of the turntable is parallel to the horizontal plane; a bolt alignment mechanism connected to the inner ring of the turntable, the bolt alignment mechanism comprising a cylinder, the axis of the cylinder is parallel to the axis of the turntable, and the cylinder can move in the axial and radial directions of the turntable, and the cylinder (41) comprises an upper half shell and a lower half shell, the upper half shell and the lower half shell are hinged to allow the upper half shell to be flipped open from above the lower half shell; a bolt stretcher connected to the inner ring of the turntable; the axis of the bolt stretcher is parallel to the axis of the turntable, and the bolt stretcher can move in the axial direction; a positioning mechanism for moving the support frame, four positioning mechanisms are symmetrically arranged on both sides of the support frame, and each positioning mechanism is used to adjust the vertical position and the horizontal position of the corresponding position of the support frame.

[0006] Optionally, the position adjusting mechanism comprises a walking part, a jacking part, a horizontal pushing part and a frame, wherein,

[0007] The walking part is connected to the lower part of the frame, and the jacking part is connected to the upper part of the frame.

[0008] The jacking part is drivingly connected to the lower surface of the corresponding side of the support frame, for adjusting the vertical position at the corresponding side of the support frame.

[0009] The horizontal pushing part is connected to the side of the frame, and the horizontal pushing part is drivingly connected to the surface of the corresponding side of the support frame, for adjusting the horizontal position at the corresponding side of the support frame.

[0010] Optionally, the walking part comprises a first motor, a plurality of rollers, an axle and a track, the first motor is connected to the frame, the output shaft of the first motor is connected to one end of the axle, and the plurality of rollers are connected to the axle, and each roller is rolling connected to the track.

[0011] And / or, the extension direction of the track is parallel to the axis of the rotating disc, and the horizontal pushing part is used for pushing the support frame to move in a direction perpendicular to the track.

[0012] Optionally, the jacking part comprises a first hydraulic cylinder and an arc surface pad, the mounting end of the first hydraulic cylinder is connected to the upper surface of the frame, the output end of the first hydraulic cylinder is hinged to the arc surface pad, and the arc surface side of the arc surface pad is in sliding contact with the lower surface of the corresponding side of the support frame.

[0013] Optionally, the horizontal pushing part comprises a second hydraulic cylinder, the mounting end of the second hydraulic cylinder is hinged to the side of the frame, and the output end of the second hydraulic cylinder is hinged to the surface of the corresponding side of the support frame.

[0014] Optionally, the frame is in L shape, and the position adjusting mechanism further comprises a reinforcing rib, the reinforcing rib is connected between the upper surface and the side of the frame.

[0015] Optionally, the rotating mechanism comprises a rotating disc, a rotating disc bearing and a driving part, the outer ring of the rotating disc bearing is connected to the support frame, the inner ring of the rotating disc bearing is connected to the rotating disc, the driving part comprises a second motor and a gear, the second motor is connected to the support frame, the output shaft of the second motor is connected to the gear, and the gear is engaged with the teeth on the outer ring of the rotating disc.

[0016] Optionally, the bolt alignment mechanism further comprises a first telescopic rod, a second telescopic rod, a first connecting rod, a second connecting rod and a third connecting rod, the mounting end of the first telescopic rod is hinged to the inner ring of the turntable, the output end of the first telescopic rod is hinged to the middle part of the cylinder, one end of the second connecting rod is hinged to one end of the cylinder, the other end of the second connecting rod is hinged to the inner ring of the turntable, the two ends of the first connecting rod are respectively hinged to the middle parts of the second connecting rod and the third connecting rod, the third connecting rod is L-shaped, one end of the third connecting rod is hinged to the other end of the cylinder, the bent part of the third connecting rod is hinged to the inner ring of the turntable, the other end of the third connecting rod is hinged to the output end of the second telescopic rod, the mounting end of the second telescopic rod is hinged to the inner ring of the turntable, and the connecting lines of the two ends of the first connecting rod, the two hinged points of the second connecting rod and the third connecting rod, the hinged point of the second connecting rod and the inner ring of the turntable, and the hinged point of the bent part of the third connecting rod and the inner ring of the turntable form a parallelogram.

[0017] Optionally, the bolt stretcher comprises a stretcher and a guide rail, the stretcher is arranged on the guide rail and can move along the extension direction of the guide rail, and the guide rail is connected to the inner ring of the turntable.

[0018] In a second aspect, the present application provides a mounting method of a horizontal end cover mounting device, comprising the following steps:

[0019] S1: temporarily fix the horizontal end cover on the support frame, and drive the four positioning mechanisms to make the support frame close to the pressure container;

[0020] S2: after the horizontal end cover is adjusted coaxially with the pressure container through the four positioning mechanisms, continue to drive the support frame to move through the four positioning mechanisms, so that the flange surface of the horizontal end cover is attached to the pressure container;

[0021] S3: drive the turntable in the rotary mechanism to rotate, rotate the bolt alignment mechanism to the bolt mounting hole at the periphery of the horizontal end cover, then put the bolt into the cylinder, move the cylinder to align the bolt with the bolt mounting hole, rotate the bolt into the bolt mounting hole through a tool, separate the upper half shell and the lower half shell constituting the cylinder, so that the bolt can be separated from the cylinder, and separate the bolt from the cylinder by rotating the turntable or elongating the second telescopic rod;

[0022] S4: drive the turntable in the rotary mechanism to rotate, rotate the bolt stretcher to align the bolt to be stretched, push the bolt into the bolt stretcher along the axial direction of the bolt to connect the bolt stretcher with the bolt, stretch and pre-tighten the bolt, and after the stretching and pre-tightening operation of the bolt is completed, pull the bolt stretcher outward along the axial direction of the bolt to separate the bolt stretcher from the bolt.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] The four positioning mechanisms are symmetrically arranged on both sides of the support frame, each of which can adjust the vertical position and the horizontal position of the corresponding position of the support frame, and the positioning mechanism drives the support frame to move towards the pressure vessel, thereby realizing the adjustment of the six degrees of freedom of the horizontal end cover, and compared with the traditional universal ball bearing adjustment mode, the four positioning mechanisms can meet the requirements of large load and large movement stroke of the support frame. After the horizontal end cover and the pressure vessel are adjusted coaxially, the support frame is continuously moved to make the flange surface of the horizontal end cover and the pressure vessel fit. Since the bolt alignment mechanism and the bolt stretcher are connected to the inner ring of the rotating disc, the bolt alignment mechanism and the bolt stretcher can be sequentially arranged on the plurality of bolt mounting holes around the horizontal end cover by rotating the rotating disc, thereby assisting the installation of the bolt. Specifically, the bolt is placed in the cylinder of the bolt alignment mechanism, and the cylinder can move synchronously along the radial direction and the axial direction of the rotating disc according to the position of the bolt mounting hole around the horizontal end cover. In this way, the bolt can simultaneously perform the alignment and approach motion with the bolt mounting hole. After the bolt is aligned with the bolt mounting hole, the bolt is screwed into the bolt mounting hole by a tool, the upper half of the shell of the cylinder is flipped open from above the lower half of the shell, and the bolt can be separated from the cylinder. The bolt and the cylinder are separated by rotating the rotating disc or moving the cylinder synchronously along the radial direction and the axial direction of the rotating disc. The rotating disc drives the cylinder to rotate to the next bolt mounting hole, the next bolt is placed in the cylinder, and the above process is repeated. In this way, the remaining installation steps are sequentially completed. The bolt alignment mechanism not only realizes the auxiliary guiding and penetrating function of the bolt, improves the installation efficiency, and at the same time, can also be adjusted according to the position of the bolt mounting hole on the horizontal end cover, thereby widening the application range. The bolt stretcher moves along the axial direction to cover the cap part of the bolt that has been screwed into the bolt mounting hole, thereby realizing the stretching and pre-tightening function of the bolt. The rotation mechanism drives the bolt alignment mechanism and the bolt stretcher to rotate, thereby meeting the installation requirements of multiple bolts, and further improving the installation efficiency of the horizontal end cover and the bolt. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a structural schematic diagram of an embodiment of the present application;

[0026] Figure 2 FIG. 4 is a structural schematic diagram of a positioning mechanism in an embodiment of the present application;

[0027] Figure 3 FIG. 6 is a structural schematic diagram of a rotation mechanism in an embodiment of the present application;

[0028] Figure 4 FIG. 8 is a structural schematic diagram of a bolt alignment mechanism in a first position in an embodiment of the present application;

[0029] Figure 5 FIG. 10 is a structural schematic diagram of a bolt alignment mechanism in a second position in an embodiment of the present application;

[0030] Figure 6 Figure 1 is a schematic view of the bolt stretcher according to the present application.

[0031] Reference signs:

[0032] 1, support frame; 2, position adjusting mechanism; 21, walking part; 211, first motor; 212, roller; 213, axle; 214, track; 22, jacking part; 221, first hydraulic cylinder; 222, cambered surface pad; 23, horizontal pushing part; 24, vehicle frame; 25, reinforcing rib; 3, rotating mechanism; 31, rotating disc; 32, rotating disc bearing; 33, driving part; 4, bolt aligning mechanism; 41, cylinder; 42, first telescopic rod; 43, second telescopic rod; 44, first connecting rod; 45, second connecting rod; 46, third connecting rod; 5, bolt stretcher; 51, stretcher; 52, guide rail. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the drawings.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the description of the present application, the description of the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" means that the specific features, structures, materials or characteristics described in connection with the embodiment or embodiment are included in at least one embodiment or embodiment of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.

[0036] The terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.

[0037] The Z axis in the drawings represents the vertical direction, i.e. the up-down position, and the positive direction of the Z axis represents up and the negative direction of the Z axis represents down; the X axis in the drawings represents the horizontal direction, i.e. the left-right position, and the positive direction of the X axis represents left and the negative direction of the X axis represents right; the Y axis in the drawings represents the front-rear position, and the positive direction of the Y axis represents the front side and the negative direction of the Y axis represents the rear side; it should be noted that the meanings of the aforementioned Z axis, Y axis and X axis are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0038] As shown in Figure 1 the first aspect, the embodiment of the present application provides a horizontal end cover mounting device, which comprises:

[0039] a support frame 1;

[0040] a rotating mechanism 3 connected to the support frame 1, wherein the rotating mechanism 3 comprises a rotating disc 31, and the axis of the rotating disc 31 is parallel to the horizontal plane;

[0041] a bolt alignment mechanism 4 connected to the inner ring of the rotating disc 31, wherein the bolt alignment mechanism 4 comprises a cylinder 41, the axis of the cylinder 41 is parallel to the axis of the rotating disc 31, the cylinder 41 can move in the axial direction and the radial direction of the rotating disc 31, and the cylinder 41 comprises an upper half shell and a lower half shell, the upper half shell and the lower half shell are hinged to each other so that the upper half shell can be flipped open from above the lower half shell;

[0042] a bolt stretcher 5 connected to the inner ring of the rotating disc 31, wherein the axis of the bolt stretcher 5 is parallel to the axis of the rotating disc 31, and the bolt stretcher 5 can move in the axial direction;

[0043] a positioning mechanism 2 for driving the support frame 1 to move, four positioning mechanisms 2 are symmetrically arranged on both sides of the support frame 1, and each positioning mechanism 2 is used for adjusting the vertical position and the horizontal position of the corresponding position of the support frame 1.

[0044] Specifically, the axis of the rotating disc 31 is parallel to the horizontal plane, the horizontal plane is the XY plane in the drawing, and the axis of the rotating disc 31 is along the Y axis direction in the drawing.

[0045] In the embodiment, four positioning mechanisms 2 are symmetrically arranged on both sides of the support frame 1. Each positioning mechanism 2 can adjust the vertical position and the horizontal position of the corresponding part of the support frame 1. The positioning mechanism 2 drives the support frame 1 to move towards the pressure vessel, thereby realizing the adjustment of the six degrees of freedom of the horizontal end cover. Compared with the traditional universal ball bearing adjustment method, the four positioning mechanisms 2 can meet the requirements of large load and large movement stroke of the support frame 1. After adjusting the horizontal end cover and the pressure vessel to be coaxial, the support frame 1 is further moved to make the flange surface of the horizontal end cover and the pressure vessel fit. Since the bolt alignment mechanism 4 and the bolt stretcher 5 are connected to the inner ring of the rotating disc 31, the bolt alignment mechanism 4 and the bolt stretcher 5 can be sequentially moved to the multiple bolt mounting holes on the periphery of the horizontal end cover by rotating the rotating disc 31, thereby assisting the installation of the bolts. Specifically, the bolts are placed in the cylinder 41 of the bolt alignment mechanism 4. The cylinder 41 can move synchronously in the radial and axial directions of the rotating disc 31 according to the position of the bolt mounting hole on the periphery of the horizontal end cover. In this way, the bolts can simultaneously perform the alignment and approach motion with the bolt mounting holes. After the bolts are aligned with the bolt mounting holes, the bolts are screwed into the bolt mounting holes by a tool. The upper half of the shell of the cylinder 41 is flipped open from above the lower half of the shell, so that the bolts can be separated from the cylinder 41. The bolts are separated from the cylinder 41 by rotating the rotating disc 31 or moving the cylinder 41 synchronously in the radial and axial directions of the rotating disc 31. The rotating disc 31 drives the cylinder 41 to rotate to the next bolt mounting hole. The next bolt is placed in the cylinder 41. The above process is repeated. In this way, the remaining installation steps are sequentially completed. The bolt alignment mechanism 4 not only realizes the auxiliary guiding and penetrating function of the bolts, but also improves the installation efficiency. At the same time, the bolt alignment mechanism 4 can also be adjusted according to the position of the bolt mounting hole on the horizontal end cover, thereby widening the application range. The bolt stretcher 5 moves in the axial direction to cover the cap part of the bolt that has been screwed into the bolt mounting hole, thereby realizing the stretching and pre-tightening function of the bolt. The rotating mechanism 3 drives the bolt alignment mechanism 4 and the bolt stretcher 5 to rotate, thereby meeting the installation requirements of multiple bolts, and further improving the installation efficiency of the horizontal end cover and the bolts.

[0046] It should be noted that in order to make the bolt in any position can slide in the cylinder 41 along the axial direction, need to ensure that the cylinder 41 specifications and bolt compatible, the relative side of the upper half of the shell and the lower half of the shell can be hinged together by the rotating shaft, hinge and other rotating parts, the relative side of the upper half of the shell and the lower half of the shell can be locked together by the lock buckle, thread locking and other ways, so that before the bolt into the cylinder 41, the upper half of the shell can be rotated to open, the bolt is put into the lower half of the shell, then the upper half of the shell is rotated to close and locked with the lower half of the shell, the head of the bolt is in the direction of the bolt mounting hole, the cap of the bolt is in the direction away from the bolt mounting hole, the staff can make the head of the bolt into the bolt mounting hole by rotating the bolt through the cap of the bolt with the help of the tool, because the diameter of the bolt cap is greater than the inner diameter of the cylinder 41, the bolt cap is blocked by the cylinder 41, at this time the head of the bolt is rotated into the bolt mounting hole, but the bolt body is still in the cylinder 41, by turning the upper half of the shell from the top of the lower half of the shell, so that the bolt can be separated from the cylinder 41 by rotating the rotating disc 31 or extending the second telescopic rod 43.

[0047] As Figure 1 shown, optionally, the positioning mechanism 2 includes a walking part 21, a jacking part 22, a horizontal pushing part 23 and a frame 24, wherein,

[0048] The walking part 21 is connected to the lower part of the frame 24, and the jacking part 22 is connected to the upper part of the frame 24;

[0049] The jacking part 22 is drivingly connected to the lower surface of the corresponding side of the support frame 1, for adjusting the vertical position of the corresponding side of the support frame 1;

[0050] The horizontal pushing part 23 is connected to the side of the frame 24, and the horizontal pushing part 23 is drivingly connected to the surface of the corresponding side of the support frame 1, for adjusting the horizontal position of the corresponding side of the support frame 1.

[0051] In this embodiment, the walking part 21 in the positioning mechanism 2 can drive the horizontal end cover on the support frame 1 to move towards the direction of the pressure vessel, so as to adjust the front and back freedom degree of the horizontal end cover, the jacking part 22 in the positioning mechanism 2 can drive the horizontal end cover to move vertically, so as to adjust the up and down freedom degree of the horizontal end cover, the horizontal pushing part 23 in the positioning mechanism 2 can drive the horizontal end cover to move horizontally, so as to adjust the left and right freedom degree of the horizontal end cover, and further realize the adjustment of the six direction freedom degrees of the horizontal end cover, i.e. up, down, left, right, front and back.

[0052] In another embodiment, the frame 24 does not necessarily have to be provided with four, and can be only one whole, and four groups of jacking parts 22 and horizontal pushing parts 23 are symmetrically installed on the upper surface of the one whole frame 24, to achieve the same effect as described above.

[0053] AsFigure 1 And Figure 2 As shown in

[0054] And / or, the extension direction of the track 214 is parallel to the axis of the rotating disc 31, and the horizontal pushing component 23 is used to push the support frame 1 to move in the direction perpendicular to the track 214.

[0055] In this embodiment, the output shaft of the first motor 211 can be connected to one end of the wheel shaft 213 through a shaft coupling, and a plurality of rollers 212 are sleeved on the wheel shaft 213. The track 214 is arranged on the ground, and the first motor 211 is started to drive the rollers 212 to rotate, so as to drive the support frame 1 to move along the extension direction of the track 214 through the positioning mechanism 2. Since the extension direction of the track 214 is parallel to the axis of the rotating disc 31, the arrangement direction of the track 214 can be along the Y-axis direction in the figure, so that the rotating disc 31 can also move along the extension direction of the track 214, which is equivalent to adjusting the front and rear positions of the support frame 1.

[0056] As shown in Figure 1 And Figure 2 Optionally, the jacking component 22 includes a first hydraulic cylinder 221 and an arc surface pad 222. The mounting end of the first hydraulic cylinder 221 is connected to the upper surface of the vehicle frame 24, and the output end of the first hydraulic cylinder 221 is hinged to the arc surface pad 222. The arc surface side of the arc surface pad 222 is in sliding contact with the lower surface of the corresponding side of the support frame 1.

[0057] In this embodiment, the mounting end of the first hydraulic cylinder 221 can be hinged to the upper surface of the vehicle frame 24 through a hinge seat or the like, and the output end of the first hydraulic cylinder 221 can be hinged to the arc surface pad 222 through a rotating shaft or the like. In this way, when the vehicle frame 24 is gradually inclined from horizontal, the arc surface side of the arc surface pad 222 keeps sliding contact with the lower surface of the support frame 1, and the arc surface pad 222 can also rotate with the inclination of the vehicle frame 24, so that the arc surface pad 222 can always push the lower surface of the vehicle frame 24.

[0058] As shown in Figure 1 And Figure 2 Optionally, the horizontal pushing component 23 includes a second hydraulic cylinder. The mounting end of the second hydraulic cylinder is hinged to the side surface of the vehicle frame 24, and the output end of the second hydraulic cylinder is hinged to the surface of the corresponding side of the support frame 1.

[0059] In this embodiment, the mounting end of the second hydraulic cylinder can be hinged to the upper side of the frame 24 via a hinged joint such as a hinged seat, and the output end of the second hydraulic cylinder can be hinged to the surface of the support frame 1 on the corresponding side via a hinged joint such as a hinged seat. The support frame 1 can be pushed or pulled by the second hydraulic cylinder.

[0060] In summary, the horizontal end cover is adjusted to be coaxial with the pressure vessel by using the lifting component 22 and the horizontal pushing component 23 in the adjusting mechanism 2, such as... Figure 1 As shown, assuming the horizontal pushers 23 in the two adjustment mechanisms 2 on the left push the support frame 1 to the right, and the horizontal pushers 23 in the two adjustment mechanisms 2 on the right pull the support frame 1 to the right as well, the horizontal end cap can be adjusted in one direction (X-axis) in the horizontal plane; the synchronous movement of the four adjustment mechanisms 2 can adjust the horizontal end cap in another direction (Y-axis) in the horizontal plane; the synchronous lifting of the lifting components 22 in the four adjustment mechanisms 2 can adjust the horizontal end cap in the vertical direction (Z-axis); the synchronous lifting of the lifting components 22 in the two adjustment mechanisms 2 on the left or right can adjust the rotation of the horizontal end cap around one horizontal coordinate axis; the synchronous lifting of the lifting components 22 in the two adjustment mechanisms 2 at the front or rear can adjust the rotation of the horizontal end cap around another horizontal coordinate axis; the synchronous forward and backward movement of the two adjustment mechanisms 2 on the left or right relative to the two adjustment mechanisms 2 on the other side can adjust the rotation of the horizontal end cap around the vertical coordinate axis, thereby realizing the adjustment of the horizontal end cap in six directions of freedom.

[0061] like Figure 2 As shown, optionally, the frame 24 is L-shaped, and the adjustment mechanism 2 also includes a reinforcing rib 25, which is connected between the upper surface and the side of the frame 24.

[0062] In this embodiment, the reinforcing rib 25 can be welded between the upper surface and the side surface of the frame 24, thereby improving the structural strength and stability of the frame 24.

[0063] like Figure 1 and Figure 3 As shown, optionally, the rotary mechanism 3 includes a turntable 31, a turntable bearing 32, and a drive component 33. The outer ring of the turntable bearing 32 is connected to the support frame 1, and the inner ring of the turntable bearing 32 is connected to the turntable 31. The drive component 33 includes a second motor and a gear. The second motor is connected to the support frame 1, and the output shaft of the second motor is connected to the gear. The gear meshes with the teeth on the outer ring edge of the turntable 31.

[0064] In this embodiment, the outer ring of the turntable bearing 32 can be fixedly installed on the support frame 1 by screws or welding, and the second motor can be installed on the support frame 1 by screws. By starting the second motor to drive the gear to rotate, the gear rotation drives the turntable 31 to rotate, thereby driving the bolt alignment mechanism 4 to rotate together with the bolt stretching machine 5, and realizing the switching of different bolt installation stations.

[0065] As shown in Figure 1 , Figure 4 and Figure 5 , optionally, the bolt alignment mechanism 4 further includes a first telescopic rod 42, a second telescopic rod 43, a first connecting rod 44, a second connecting rod 45, and a third connecting rod 46. The mounting end of the first telescopic rod 42 is hinged to the inner ring of the turntable 31, the output end of the first telescopic rod 42 is hinged to the middle of the cylinder body 41, one end of the second connecting rod 45 is hinged to one end of the cylinder body 41, the other end of the second connecting rod 45 is hinged to the inner ring of the turntable 31, the two ends of the first connecting rod 44 are respectively hinged to the middle of the second connecting rod 45 and the third connecting rod 46, the third connecting rod 46 is L-shaped, one end of the third connecting rod 46 is hinged to the other end of the cylinder body 41, the bent part of the third connecting rod 46 is hinged to the inner ring of the turntable 31, the other end of the third connecting rod 46 is hinged to the output end of the second telescopic rod 43, the mounting end of the second telescopic rod 43 is hinged to the inner ring of the turntable 31, and the connecting lines of the two hinged points of the first connecting rod 44, the second connecting rod 45, and the third connecting rod 46, the hinged points of the second connecting rod 45 and the inner ring of the turntable 31, and the bent part of the third connecting rod 46 and the inner ring of the turntable 31 form a parallelogram.

[0066] Specifically, the telescopic modes of the first telescopic rod 42 and the second telescopic rod 43 can be manual driving, screw driving, hydraulic driving, pneumatic driving, and electric driving, etc. When placing the bolt in the cylinder body 41, it needs to be noted that the upper half shell and the lower half shell constituting the cylinder body 41 are in a separated state, the bolt head is placed into the lower half shell with the bolt installation hole of the horizontal end cover as the direction, and the upper half shell and the lower half shell are closed and locked.

[0067] In this embodiment, the parallelogram formed by the connecting lines of the two ends of the second connecting rod 45, the two hinged points of the first connecting rod 44 and the third connecting rod 46, the hinged point of the first connecting rod 44 and the inner ring of the turntable 31, and the hinged point of the bent part of the third connecting rod 46 and the inner ring of the turntable 31, as shown in Figure 4 , the cylinder body 41 is in the first position, at this time the included angle between the third connecting rod 46 and the inner ring of the turntable 31 is α, and angle α is also an internal angle of the parallelogram. By elongating the output end of the second telescopic rod 43 and contracting the output end of the first telescopic rod 42, angle α becomes smaller, the parallelogram is similar to being compressed, and the cylinder body 41 is in the second position as shown in Figure 5 . Thus, the axial position and the radial position of the cylinder body 41 in the inner ring of the turntable 31 are adjusted.

[0068] In another embodiment, the position adjustment of the cylinder 41 can also be achieved by a wedge mechanism instead of the connecting rod mechanism described above. For example, the wedge mechanism is composed of an inclined surface and a wedge. The inclined surface is usually fixed to the inner ring of the rotating disc 31, and the wedge is connected to the cylinder 41. The inclined surface is fixed to the inner ring of the rotating disc 31 to ensure that the position and angle of the inclined surface meet the design requirements. Then the wedge is connected to the cylinder 41 to ensure that the wedge can move along the direction of the inclined surface. By rotating the wedge, the wedge moves along the direction of the inclined surface, thereby achieving the position adjustment of the cylinder 41. The rotation of the wedge can be controlled manually or electrically.

[0069] As shown in Figure 1 and Figure 6 Optionally, the bolt tensioner 5 includes a tensioner 51 and a guide rail 52. The tensioner 51 is arranged on the guide rail 52 and can move along the extension direction of the guide rail 52. The guide rail 52 is connected to the inner ring of the rotating disc 31.

[0070] Specifically, the guide rail 52 can be fixedly installed on the inner ring of the rotating disc 31 by screws or welding, and the extension direction of the guide rail 52 is parallel to the Y-axis direction in Figure 6 , that is, parallel to the axial direction of the rotating disc 31. The tensioner 51 can move on the guide rail 52 by itself, for example, the tensioner 51 can be installed on an electric trolley, and the electric trolley is arranged on the guide rail 52 to drive the tensioner 51 to move along the guide rail 52. The tensioner 51 can also be manually pushed or pulled on the guide rail 52.

[0071] In this embodiment, the axis of the bolt tensioner 5 is parallel to the axis of the rotating disc 31, that is, the axis of the tensioner 51 is parallel to the axis of the rotating disc 31. In this way, when the tensioner 51 moves along the axial direction, it can approach or move away from the bolt. When the tensioner 51 is pushed inward along the axial direction of the bolt, that is, pushed along the positive direction of the Y-axis in Figure 6 , the tensioner 51 can approach the bolt and be sleeved into the bolt to perform the bolt tensioning operation. When the tensioner 51 is pulled outward along the axial direction of the bolt, that is, pulled along the negative direction of the Y-axis in Figure 6 , the tensioner 51 can move away from the bolt to separate the tensioner 51 from the bolt, preparing for the next bolt tensioning operation.

[0072] In a second aspect, another embodiment of the present application provides a mounting method of a horizontal end cover mounting device, including the following steps:

[0073] S1: temporarily fix the horizontal end cover on the support frame 1, and drive the four position adjusting mechanisms 2 to move the support frame 1 close to the pressure vessel;

[0074] S2: After the horizontal end cover is coaxial with the pressure vessel through the four positioning mechanisms 2, the support frame 1 is continuously driven to move through the four positioning mechanisms 2, so that the flange surface of the horizontal end cover is attached to the flange surface of the pressure vessel;

[0075] S3: The rotating disc 31 in the rotating mechanism 3 is driven to rotate, the bolt alignment mechanism 4 is rotated to one bolt mounting hole on the periphery of the horizontal end cover, then the bolt is put into the cylinder 41, the cylinder 41 is moved to align the bolt with the bolt mounting hole, the bolt is screwed into the bolt mounting hole through a tool, the upper half shell and the lower half shell of the cylinder 41 are separated, the bolt can be separated from the cylinder 41, the bolt is separated from the cylinder 41 by rotating the rotating disc 31 or extending the second telescopic rod 43;

[0076] S4: The rotating disc 31 in the rotating mechanism 3 is driven to rotate, the bolt stretcher 5 is rotated to align the bolt to be stretched, the bolt stretcher 5 is pushed inward along the bolt axial direction to put the bolt into the sleeve, the bolt stretcher 5 is connected with the bolt, the bolt is stretched and pre-tightened, after the bolt stretching and pre-tightening operation is completed, the bolt stretcher 5 is pulled outward along the bolt axial direction, so that the bolt stretcher 5 is separated from the bolt.

[0077] Although the present application is disclosed as above, the protection scope of the present application is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and these changes and modifications will fall into the protection scope of the present application.

Claims

1. A horizontal end cap mounting apparatus, characterized by, The utility model relates to a kind of support frame (1);Rotary mechanism (3) is connected to the support frame (1), and the rotary mechanism (3) includes turntable (31), and the axis of the turntable (31) is parallel with horizontal plane;Bolt alignment mechanism (4) is connected to the inner ring of the turntable (31), and the bolt alignment mechanism (4) includes cylinder (41), the axis of the cylinder (41) is parallel with the axis of the turntable (31), and the cylinder (41) can be moved along the axial direction and radial direction of the turntable (31), and the cylinder (41) includes upper half shell and lower half shell, the upper half shell and the lower half shell are hinged, so that the upper half shell can be turned open from the upper side of the lower half shell;Bolt stretcher (5) is connected to the inner ring of the turntable (31);The axis of the bolt stretcher (5) is parallel with the axis of the turntable (31), and the bolt stretcher (5) can be moved along axial direction;Positioning mechanism (2) is used to drive the support frame (1) to move, four positioning mechanisms (2) are symmetrically arranged on the two sides of the support frame (1), and each positioning mechanism (2) is used to adjust the vertical position and horizontal position of the corresponding side of the support frame (1);The positioning mechanism (2) includes walking component (21), jacking component (22), horizontal pushing component (23) and frame (24), wherein, The walking component (21) is connected to the lower part of the frame (24), and the jacking component (22) is connected to the upper part of the frame (24); The jacking component (22) is drivingly connected to the lower surface of the corresponding side of the support frame (1), for adjusting the vertical position of the corresponding side of the support frame (1); The horizontal pushing component (23) is connected to the side of the frame (24), and the horizontal pushing component (23) is drivingly connected to the surface of the corresponding side of the support frame (1), for adjusting the horizontal position of the corresponding side of the support frame (1). The walking component (21) includes a first motor (211), a plurality of rollers (212), an axle (213) and a track (214), the first motor (211) is connected to the frame (24), one end of the axle (213) is connected to the output shaft of the first motor (211), the plurality of rollers (212) are connected to the axle (213), and each roller (212) is rollingly connected to the track (214); And / or, the extension direction of the track (214) is parallel to the axis of the turntable (31), and the horizontal pushing component (23) is used to push the support frame (1) to move in a direction perpendicular to the track (214). The jacking component (22) includes a first hydraulic cylinder (221) and an arc surface pad (222), the mounting end of the first hydraulic cylinder (221) is connected to the upper surface of the frame (24), the output end of the first hydraulic cylinder (221) is hingedly connected to the arc surface pad (222), and the arc surface side of the arc surface pad (222) is in sliding contact with the lower surface of the corresponding side of the support frame (1). ​ ​ 2. The horizontal end cap mounting apparatus of claim 1, wherein, ​ ​ 3. The horizontal end cap mounting apparatus of claim 2, wherein, ​ 4. The horizontal end cap mounting apparatus of claim 3, wherein, The horizontal pushing component (23) comprises a second hydraulic cylinder, the mounting end of the second hydraulic cylinder is hinged to the side of the frame (24), and the output end of the second hydraulic cylinder is hinged to the surface of the corresponding side of the support frame (1).

5. The horizontal end cap mounting apparatus of claim 2, wherein, The frame (24) is provided in an L shape, and the position adjusting mechanism (2) further comprises a reinforcing rib (25) connected between the upper surface and the side surface of the frame (24).

6. The horizontal end cap mounting apparatus of claim 4, wherein, The rotating mechanism (3) further comprises a turntable bearing (32) and a driving component (33), the outer ring of the turntable bearing (32) is connected to the support frame (1), the inner ring of the turntable bearing (32) is connected to the turntable (31), the driving component (33) comprises a second motor and a gear, the second motor is connected to the support frame (1), the output shaft of the second motor is connected to the gear, and the gear is engaged with the teeth on the outer ring of the turntable (31).

7. The horizontal end cap mounting apparatus of claim 6, wherein, The bolt aligning mechanism (4) further comprises a first telescopic rod (42), a second telescopic rod (43), a first connecting rod (44), a second connecting rod (45) and a third connecting rod (46), the mounting end of the first telescopic rod (42) is hinged to the inner ring of the turntable (31), the output end of the first telescopic rod (42) is hinged to the middle part of the cylinder body (41), one end of the second connecting rod (45) is hinged to one end of the cylinder body (41), the other end of the second connecting rod (45) is hinged to the inner ring of the turntable (31), the two ends of the first connecting rod (44) are respectively hinged to the middle parts of the second connecting rod (45) and the third connecting rod (46), the third connecting rod (46) is provided in an L shape, one end of the third connecting rod (46) is hinged to the other end of the cylinder body (41), the bent part of the third connecting rod (46) is hinged to the inner ring of the turntable (31), the other end of the third connecting rod (46) is hinged to the output end of the second telescopic rod (43), the mounting end of the second telescopic rod (43) is hinged to the inner ring of the turntable (31), and the connecting lines of the two ends of the first connecting rod (44), the two hinged points of the second connecting rod (45) and the third connecting rod (46), the hinged point of the second connecting rod (45) and the inner ring of the turntable (31), and the hinged point of the bent part of the third connecting rod (46) and the inner ring of the turntable (31) form a parallelogram.

8. The horizontal end cap mounting apparatus of claim 7, wherein, The bolt stretcher (5) comprises a stretcher (51) and a guide rail (52), the stretcher (51) is arranged on the guide rail (52) and can move along the extension direction of the guide rail (52), and the guide rail (52) is connected to the inner ring of the turntable (31).

9. A method of installing a horizontal end cap mounting apparatus as defined in claim 7, wherein The method comprises the following steps: S1: temporarily fix the horizontal end cover on the support frame (1), and drive the four position adjusting mechanisms (2) to move the support frame (1) close to the pressure container; S2: after the horizontal end cover and the pressure container are adjusted coaxially through the four position adjusting mechanisms (2), continue to drive the support frame (1) to move through the four position adjusting mechanisms (2), so that the flange surfaces of the horizontal end cover and the pressure container are attached. S3: drive the rotating mechanism (3) in the rotating disc (31) rotation, the bolt alignment mechanism (4) is rotated to the horizontal end cover one bolt mounting hole, then put the bolt into the cylinder (41), move the cylinder (41), make the bolt and bolt mounting hole alignment, through the tool will be bolted into the bolt mounting hole, the upper half of the shell and the lower half of the shell of the cylinder (41) are separated, the bolt can be separated from the cylinder (41), by rotating the rotating disc (31) or extending the second telescopic rod (43) to separate the bolt from the cylinder (41); S4: drive the rotating mechanism (3) in the rotating disc (31) rotation, the bolt stretching machine (5) is rotated to align the bolt needs to be stretched, the bolt stretching machine (5) is pushed inward along the bolt axial direction to put the bolt into the sleeve, make the bolt stretching machine (5) and the bolt connected, the bolt stretching machine (5) and the bolt are separated after the bolt stretching operation is completed.

Images