CN211805772U

CN211805772U - Overhauling platform

Info

Publication number: CN211805772U
Application number: CN201922028078.5U
Authority: CN
Inventors: 刘辉; 陈志高; 杨毅; 阮红冰; 马法坤; 刘添; 王加杰; 严元元; 陈欣; 刘畅
Original assignee: China Nuclear Industry Maintenance Co Ltd
Current assignee: China Nuclear Industry Maintenance Co Ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-10-30
Anticipated expiration: 2029-11-21

Abstract

The utility model belongs to the technical equipment field is overhauld to the nuclear power, especially, relate to an overhaul platform. The maintenance platform includes: and the clamping and overturning device is used for fixing the pump and comprises a clamping structure and an overturning driving structure. And the height adjusting device is used for adjusting the height of the pump and comprises an adjusting seat frame and an adjusting driving structure. The horizontal adjusting device is used for adjusting the horizontal position of the target object and comprises a supporting structure, a rotation driving structure and a rotating structure. A hoist device for lifting an object from a predetermined position, the hoist device comprising: hanging structure, lift drive structure and sliding construction. The utility model discloses a centre gripping turning device realizes the fixed of centrifugal pump and the rotation of predetermined angle, carries out altitude mixture control to the centrifugal pump through altitude mixture control device, through hoist device hoist and mount target, through the horizontal position of horizontal adjusting device regulation target. Thereby completing the fixing, overturning, disassembling, lifting and reassembling of the centrifugal pump.

Description

Overhauling platform

Technical Field

The utility model belongs to the technical equipment field is overhauld to the nuclear power, especially, relate to an overhaul platform.

Background

At present, most of pump equipment in the nuclear power industry stays on the level of a simple maintenance device according to the configuration condition of the pump equipment, special automatic maintenance equipment is lacked, and particularly, station switching during maintenance is still in the states of chain block, manual carrying and the like for large-scale pump equipment maintenance. The automatic maintenance device is still lack of comprehensive application degree, and the on-site maintenance work requires a reliable maintenance tool to meet the on-site maintenance requirement.

At present, during the work of comprehensively disassembling and overhauling a single-stage centrifugal pump of a nuclear power station, the processes of disassembling the centrifugal pump firstly and then re-assembling the centrifugal pump are required. Requiring frequent fixing, turning, measuring, disassembling and reassembling of the centrifugal pump.

Therefore, there is a need for an apparatus to accomplish the problems of attachment, inversion, disassembly and lifting separation and reassembly of centrifugal pumps.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an overhaul platform aims at solving how to implement fixedly, upset, dismantlement and promotion separation to the centrifugal pump to accomplish the problem that each spare part of centrifugal pump overhauld.

The utility model provides an overhaul platform for dismantle the pump and overhaul and reassemble, wherein, the pump includes the pump body, connects the pump cover of pump body one end and connection the impeller of pump cover, overhaul the platform and include:

the clamping and overturning device is used for fixing the pump and comprises a clamping structure and an overturning driving structure, wherein the clamping structure is used for fixing the pump body, and comprises a clamping base and a clamping mechanism which is connected with the clamping base and clamps the other end of the pump body; the overturning driving structure is used for driving the clamping structure to rotate by a preset angle, the overturning driving structure comprises a rotating base connected with the clamping base and an overturning driving mechanism rotationally connected with the rotating base, the rotating base is provided with a rotating center, and the overturning driving mechanism is used for driving the rotating base to rotate around the rotating center so as to drive the clamping base to rotate by the preset angle;

the height adjusting device is used for adjusting the height of the pump and comprises an adjusting seat frame and an adjusting driving structure, the adjusting seat frame comprises an adjusting bottom plate, an adjusting top plate and two adjusting side plates, the adjusting bottom plate is flatly laid, the adjusting top plate is arranged opposite to the adjusting bottom plate, the two adjusting side plates are positioned between the adjusting bottom plate and the adjusting top plate and are vertically arranged, and the adjusting bottom plate, the adjusting top plate and the two adjusting side plates are surrounded to form a height adjusting groove; the adjusting driving structure comprises a sliding seat and an adjusting driving mechanism, wherein one end of the sliding seat is arranged in the height adjusting groove in a sliding mode, the other end of the sliding seat is connected with the pump body, and the adjusting driving mechanism is used for driving the sliding seat to slide in the height adjusting groove in a reciprocating mode;

the horizontal adjusting device is used for adjusting the horizontal position of a target object and comprises a supporting structure, a rotation driving structure and a rotation structure, wherein the supporting structure comprises a supporting upright post and two supporting side plates, one end of the supporting upright post extends downwards and is vertically arranged, the two supporting side plates are connected with the other end of the supporting upright post, and the two supporting side plates are arranged at intervals along the axial direction of the supporting upright post; the rotating structure comprises a rotating shaft and a rotating arm, wherein two ends of the rotating shaft are respectively rotatably connected with the two supporting side plates, one end of the rotating arm is connected with the rotating shaft, and the other end of the rotating arm extends towards the direction departing from the supporting upright column and is hung with the target object; the rotation driving structure is connected to the other end of the supporting upright column and is used for driving the rotating shaft to rotate in a reciprocating manner so as to drive the rotating arm to rotate horizontally;

a hoist for lifting an object from a predetermined position, the hoist comprising: a hanging structure, a lifting driving structure and a sliding structure; the hanging structure is used for connecting the target object to be lifted and comprises a hanging disc and a hanging connecting piece used for connecting the hanging disc and the target object; one end of the lifting driving structure is connected with the hoisting disc and used for lifting the hoisting disc so as to enable the target object to be separated from the preset position; the sliding structure is connected with the other end of the lifting driving structure and is in sliding connection with an external structural part, and the sliding structure slides relative to the external structural part along a preset direction so as to adjust the relative position of the hoisting disc and the target object.

The technical effects of the utility model are that: the centrifugal pump is fixed and rotated at a preset angle through the clamping and overturning device, the centrifugal pump is conveniently disassembled and measured through height adjustment of the height adjusting device, the target object is lifted through the lifting device, and the horizontal position of the target object is adjusted through the horizontal adjusting device. Thereby completing the fixing, overturning, disassembling, lifting, separating and reassembling of the centrifugal pump.

Drawings

Fig. 1 is a three-dimensional structure diagram of an overhaul platform provided by the embodiment of the utility model;

FIG. 2 is an exploded view of the service platform of FIG. 1;

FIG. 3 is a perspective view of the clamping structure of FIG. 2;

FIG. 4 is a perspective view of the tumble drive configuration of FIG. 2;

FIG. 5 is a cross-sectional view of the tumble drive configuration of FIG. 4;

FIG. 6 is a perspective view of the height adjustment mechanism of FIG. 2;

FIG. 7 is a perspective view of the adjustment drive structure of FIG. 2;

FIG. 8 is a perspective view of the support base of FIG. 2;

FIG. 9 is a perspective view of the hoist tray of FIG. 2;

fig. 10 is a perspective view of the sliding structure of fig. 2.

The correspondence between reference numbers and names in the drawings is as follows:

100. overhauling the platform; 200. a centrifugal pump; 201. a pump body; 202. a pump cover; 203. an impeller; 101. a clamping and overturning device; 102. a height adjustment device; 103. a leveling device; 104. hoisting the device; 10. a clamping mechanism; 11. a first hoop; 12. a second hoop; 13. a locking member; 14. clamping the base; 15. a turnover driving structure; 151. rotating the base; 152. a turnover driving mechanism; 111. a first clamping hole; 112. a second clamping hole; 16. a buffer member; 20. an adjusting seat frame; 21. adjusting the bottom plate; 22. adjusting the top plate; 23. adjusting the side plate; 211. a height adjusting groove; 31. a support structure; 311. supporting the upright post; 313. supporting the side plates; 312. A support base; 32. a rotation driving structure; 33. a rotating structure; 41. a sliding structure; 42. a lifting drive structure; 43. a hanging structure; 431. hoisting a disc; 432. hoisting the connecting piece; 24. a sliding seat; 241. a first roller; 242. a second roller; 153. a flipping driver; 154. turning over the speed reducer; 155. turning over the driving wheel; 156. turning over the driven wheel; 25. adjusting the driving mechanism; 251. an adjustment drive; 252. adjusting the lead screw; 253. adjusting the nut; 243. a guide rail plate; 321. a horizontal driver; 322. adjusting the driving wheel; 323. Adjusting the driven wheel; 331. a rotating shaft; 332. a rotating arm; 3321. a spandrel girder; 3322. a reinforcing bar; 3323. A rotating plate; 3324. a sliding groove; 317. a control cabinet; 318. a control mechanism; 319. a hydraulic oil tank; 314. a support base plate; 316. a support wheel mechanism; 315. an anti-roll mechanism; 4311. hoisting a hook; 4312. Hoisting ribs; 4313. a disc body; 4314. hoisting the connecting hole; 411. a sliding bottom plate; 412. a sliding side plate; 413. a sliding roller; 19. a clamping structure; 142. clamping the bottom plate; 141. clamping the chassis; 29. Adjusting the drive structure;

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "vertical", "parallel", "bottom", "angle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship.

Referring to fig. 1 to 4, an embodiment of the present invention provides an overhaul platform 100 for disassembling and overhauling a centrifugal pump 200 in a nuclear power plant. The centrifugal pump 200 includes a pump body 201, a pump cover 202 connected to one end of the pump body 201, and an impeller 203 connected to the pump cover 202. The maintenance platform 100 comprises a clamping and overturning device 101, a height adjusting device 102, a horizontal adjusting device 103 and a hoisting device 104.

And the clamping and overturning device 101 is used for fixing and overturning the centrifugal pump 200. The clamping and turning device 101 includes: a clamping structure 19 and a flipping drive structure 15. The clamping structure 19 is used to clamp the pump body 201 to limit the translational motion of the centrifugal pump 200, but not the rotational motion of the centrifugal pump 200. The clamping structure 19 includes a clamping base 14 and a clamping mechanism 10 connected to the clamping base 14 and clamping the other end of the pump body 201. Specifically, the pump body 201 horizontally projects into the gripping mechanism 10, and is thereby horizontally gripped by the gripping mechanism 10. The flipping driving structure 15 is used for driving the clamping structure 19 to rotate by a predetermined angle. It will be appreciated that the invert drive 15 may drive the clamp 19 to rotate back and forth, or 360 degrees. The inversion driving mechanism 15 includes a rotating base 151 connected to the clamping base 14 and an inversion driving mechanism 152 rotatably connected to the rotating base 151. The rotating base 151 has a rotation center, and the turning driving mechanism 152 is used for driving the rotating base 151 to rotate around the rotation center, that is, the turning driving mechanism 152 rotates around a rotation axis to drive the clamping base 14 to rotate by a predetermined angle.

The clamping base 14 is attached to the rotating base 151 and the clamping mechanism 10 clamps one end of the pump body by rotatably positioning the rotating base 151 about a fixed point or axis. When the turning driving mechanism 152 drives the rotating base 151 to rotate by a predetermined angle, the holding structure 19 also rotates with the rotating base 151, so as to drive the centrifugal pump 200 held on the holding structure 19 to rotate by a predetermined angle.

In one embodiment, the clamping mechanism 10 includes a first hoop 11 connected to the clamping base 14, a second hoop 12 used in cooperation with the first hoop 11, and a locking member 13 connecting the first hoop 11 and the second hoop 12, wherein at least two ends of the second hoop 12 are respectively provided with a locking member 13, and the pump body 201 is clamped between the first hoop 11 and the second hoop 12. The first hoop 11 and the clamping base 14 are fixedly connected through a welding process, and the second hoop 12 is detachably connected with the first hoop 11, so that the pump body 201 is convenient to clamp and disassemble.

In one embodiment, the first anchor ear 11 has first clamping holes 111 at both ends thereof, the second anchor ear 12 has second clamping holes 112 at both ends thereof corresponding to the first clamping holes 111, and the locking member 13 includes a locking bolt passing through the first clamping holes 111 and the corresponding second clamping holes 112 and a locking nut cooperating with the locking bolt. Through the cooperation of locking bolt and lock nut, can lock the both ends of second staple bolt 12 to the both ends of first staple bolt 11 respectively, moreover through adjusting lock nut and locking bolt's the elasticity of being connected to make first staple bolt 11 and second staple bolt 12 grasp the pump body 201 of different external diameters size, simple structure and with low costs.

Optionally, the diameter range of pump body 201 is: 350 mm-500 mm.

In one embodiment, the clamping structure 19 further comprises a buffer 16 made of a flexible material and disposed at the first anchor ear 11 and/or the second anchor ear 12 and abutting the pump body 201.

Optionally, the buffer 16 may be a cushion pad wrapped on the pump body 201, and the cushion pad may reduce the acting force of the first hoop 11 and/or the second hoop 12 on the pump body 201, so as to achieve the purpose of protecting the pump body 201.

Optionally, the buffer 16 is strip-shaped and provided with a plurality of buffers, and each buffer 16 is arranged around the circumferential direction of the pump body 201 at intervals.

In one embodiment, the clamping base 14 includes a clamping base plate 142 and a clamping base frame 141 connecting the clamping base plate 142 and the first hoop 11, and the clamping base plate 142 is connected to the rotating base 151 and rotates with the rotating base 151. The clamping base 14 is of a hollow structure, so that the weight of the clamping base 14 can be reduced, the bearing weight of the rotating base 151 is reduced, and the overturning driving mechanism 152 is favorable for driving the rotating base 151 to rotate smoothly. Specifically, the clamping base 14 is welded by steel structures, and the strength is ensured, and the weight of the clamping base is reduced. The total clamping mass of the rotary base 151 is controlled within 2000 kg.

Referring to fig. 4 to 6, in one embodiment, the flipping driving mechanism 152 includes a fixed rotating stationary ring 158, a flipping driven wheel 156 rotatably connected to the rotating stationary ring 158, a rotating disc 157 connecting the flipping driven wheel 156 and the rotating base 151, a flipping driver 153, and a flipping driving wheel 155 driven by the flipping driver 153 and driving the flipping driven wheel 156 to rotate. Rotating base 151 is the disc-shaped structure, and the wheel face of upset action wheel 155 is connected to one side quotation of rotating base 151, optionally, can set up the through-hole on rotating base 151, and sets up the screw hole on the wheel face of the follow driving wheel 156 in the upset to through the bolt with rotating base 151 lock screw to the upset follow driving wheel 156, rotating base 151 and the upset follow driving wheel 156 between face-to-face connection, can improve the stability of pump body upset process. Specifically, the flipping driver 153 drives the flipping driving wheel 155 to rotate, and the flipping driving wheel 155 transmits power to the flipping driven wheel 156, so that the flipping driven wheel rotates around the outer annular surface of the rotating stationary ring 158, and further the rotating base 151 rotates together.

In one embodiment, the tumble driven wheel 156 is a driven gear and the tumble drive wheel 155 is a drive gear that meshes with the driven gear. Specifically, the turning driven wheel 156 and the turning driving wheel 155 are driven by a gear structure, and the gear structure has the characteristics of high precision, high transmission efficiency and the like.

In one embodiment, the tumble drive mechanism 152 includes a tumble reducer 154 connecting the tumble drive 153 to the tumble drive wheel 155. Specifically, the flipping driver 153 is a servo motor.

Alternatively, the diameter of the turning driving wheel 155 is smaller than that of the turning driven wheel 156, i.e. the small gear drives the large gear to turn the holding structure 19. Preferably, the rotating speed of the turning driven wheel 156 is controlled within 3r/min, and the turning driving wheel 155 and the turning driven wheel 156 are also provided with protective covers to prevent foreign objects from entering, so that stable turning and accurate positioning of the centrifugal pump 200 in the horizontal station and the vertical station are jointly realized.

In one embodiment, the rotary disk 157 has a positioning groove, the extending path of the positioning groove is disposed in a ring shape, and the turning driven wheel 156 has a positioning ring protruding toward the disk surface of the rotary disk 157, the positioning ring is adapted to the positioning groove and is located in the positioning groove. The thickness of the rotary disk 157 and the turnover driven wheel 156 can be reduced by the cooperation of the positioning groove and the positioning ring, so that the structure is compact.

Referring to fig. 4 to 6, the height adjusting device 102 is used for adjusting the height of the centrifugal pump 200, so as to facilitate the detachment and measurement of parts such as the pump cover 202 and the impeller 203 from the pump body 201. The height adjusting device 102 includes: an adjustment mount 20 and an adjustment drive structure 29. The adjusting seat frame 20 includes an adjusting bottom plate 21 disposed flatly, an adjusting top plate 22 disposed opposite to the adjusting bottom plate 21, and two adjusting side plates 23 disposed vertically between the adjusting bottom plate 21 and the adjusting top plate 22. Specifically, the adjustment top plate 22 is located above the adjustment bottom plate 21. The adjusting bottom plate 21, the adjusting top plate 22 and the two adjusting side plates 23 surround to form a height adjusting groove 211. The adjusting driving structure 29 includes a sliding seat 24 having one end slidably disposed in the height adjusting groove 211 and the other end connected to the rotating stationary ring 158, and an adjusting driving mechanism 25 for driving the sliding seat 24 to slide back and forth in the height adjusting groove 211. The adjusting driving mechanism 25 is connected with the adjusting seat frame 20 and drives the sliding seat 24 to slide up and down in the height adjusting groove 211 in a reciprocating manner, so as to drive the clamping and overturning device 101 to move up and down in a reciprocating manner, and further, the height adjustment of the centrifugal pump 200 is realized.

In one embodiment, the adjusting driving mechanism 25 includes a hydraulic cylinder disposed in the height adjusting groove 211 and connected to the adjusting base plate 21, and a piston rod of the hydraulic cylinder drives the sliding seat 24 to slide back and forth in the height adjusting groove 211. It will be appreciated that the hydraulic cylinder is connected to a hydraulic system comprising a hydraulic reservoir 319, a hydraulic power mechanism and a conduit connecting the hydraulic reservoir 319 to the hydraulic cylinder. Wherein, the hydraulic cylinder adopts the design of preventing falling by oneself to be equipped with safety nut, the emergence of prevention accident.

In one embodiment, the adjustment drive 25 further comprises two articulated seats, one of which is used to pivotally connect the lower end of the hydraulic cylinder to the base plate and the other of which is used to pivotally connect the piston rod to the sliding seat 24, the hydraulic cylinder allowing a predetermined angle of rotation during the sliding of the sliding seat 24, wherein the plane of rotation of the hydraulic cylinder is parallel to the plane defined by the adjustment side plate 23. The total travel of the carriage 24 is controlled as follows: 0 ~ 1000mm, the speed control of sliding seat 24 is at: 80-120 mm/s and can be servo-regulated.

In one embodiment, the adjusting driving mechanism 25 includes an adjusting driver 251 connected to the adjusting top plate 22, an adjusting nut 253 connected to the sliding seat 24, and an adjusting lead screw 252 having one end connected to the adjusting driver 251 and the other end extending downward and cooperating with the adjusting nut 253, wherein the adjusting driver 251 is used for driving the adjusting lead screw 252 to rotate back and forth relative to the adjusting nut 253 to adjust the height of the sliding seat 24. It can be understood that the adjusting driver 251 drives the adjusting screw 252 to rotate, so that the rotation of the adjusting screw 252 is converted into the linear motion of the sliding seat 24, and the matching of the adjusting screw 252 and the adjusting nut 253 has the characteristics of high transmission precision, easy control of the transmission process, and the like.

In one embodiment, the adjustment driver 251 includes an adjustment driving base connected to the adjustment top plate 22, an adjustment motor disposed on the adjustment driving base, and an adjustment reducer connected to the adjustment motor and the adjustment screw 252. The speed reducer can be adjusted to output the rotating speed with the preset transmission ratio. The adjusting motor is arranged on the adjusting top plate 22 through the adjusting driving seat, so that the operation stability of the adjusting motor is improved. Alternatively, the adjustment motor may be a servo motor.

In one embodiment, the sliding seat 24 includes an adjustment slider located in the height adjustment groove 211, a first roller 241 for guiding the adjustment slider to roll up and down reciprocally, an adjustment slide plate to which one end of the adjustment slider is connected, and a second roller 242 for guiding the adjustment slide plate to roll up and down reciprocally. One side face of the adjusting sliding plate is connected with one end of the adjusting sliding block, and the other side face of the adjusting sliding plate is connected with the clamping and overturning device 101. Further, a rotating fixed ring 158 is fixedly arranged on the other side plate surface of the adjusting slide plate. Therefore, in the sliding process of the adjusting sliding plate, the clamping and overturning device 101 can be driven to slide up and down together, so as to adjust the height position of the centrifugal pump 200.

In one embodiment, the first rollers 241 are provided in pairs and four pairs, and the rotation axes of the two first rollers 241 located in the same pair are orthogonally provided. The two first rollers 241 arranged in pairs roll on two orthogonally arranged surfaces of the corresponding adjustment side plate 23, respectively, thereby controlling the deviation of the adjustment slider in the X-axis direction and the Y-axis direction, so that the adjustment slider can stably slide in the height Z-axis direction. The first roller 241 is a rubber roller, and the rubber material can reduce the abrasion between the first roller 241 and the adjusting side plate 23, thereby reducing the replacement frequency of the first roller 241.

In one embodiment, the second rollers 242 are provided in pairs and four pairs, and the rotation axes of the two second rollers 242 located in the same pair are orthogonally provided. The two second rollers 242 arranged in pairs roll on two orthogonally arranged surfaces of the corresponding adjustment side plate 23, respectively, thereby controlling the deviation of the adjustment slide plate in the X-axis direction and the Y-axis direction, so that the adjustment slide plate can stably slide in the height Z-axis direction. The second roller 242 is a rubber roller, and the rubber material can reduce the abrasion between the second roller 242 and the adjusting side plate 23, thereby reducing the replacement frequency of the second roller 242. In one embodiment, the height adjusting device 102 further includes a rail plate 243 connected to the adjusting side plate 23, and the rail plate 243 is disposed on a rolling path of the first roller 241 and/or the second roller 242. The rail plate 243 serves to guide the rolling of the first roller 241 and/or the second roller 242, so that the height adjustment of the centrifugal pump 200 is smooth and reliable.

By means of the clamping and turning device 101 and the height adjustment device 102, a height adjustment as well as an angle adjustment of the centrifugal pump 200 in the vertical direction of the service platform 100 can be achieved.

Referring to fig. 6 to 7, the horizontal adjusting device 103 is used for adjusting the horizontal position of the target object, specifically, after the impeller 203 is detached from the pump body 201 or when the impeller 203 is lifted from a predetermined position and is to be assembled to the pump body 201, the impeller 203 is suspended on the lifting device 104. The horizontal adjusting device 103 is used for adjusting the horizontal position of the hoisting device 104, so that the hoisting device 104 can conveniently perform subsequent operation on the target object. The leveling device 103 includes: a support structure 31, a rotation structure 33 and a rotation drive structure 32. The supporting structure 31 comprises a supporting upright column 311 with one end extending downwards and vertically arranged and two supporting side plates 313 connected with the other end of the supporting upright column 311, wherein the two supporting side plates 313 are arranged at intervals along the axial direction of the supporting upright column 311; it will be appreciated that the upright and the two support side plates 313 are made of a metal material, and the support side plates 313 are spaced apart from each other and are connected to the upright by a welding process. The rotating structure 33 includes a rotating shaft 331 with two ends respectively rotatably connected to the two supporting side plates 313 and a rotating arm 332 with one end connected to the rotating shaft 331, the other end of the rotating arm 332 extends in a direction away from the supporting column 311 and is hung with the hoisting device 104, and the target object is connected to the hoisting device 104. The rotation driving structure 32 is connected to the other end of the supporting column 311 and is used for driving the rotation shaft 331 to rotate back and forth so as to drive the rotation arm 332 to rotate horizontally, thereby changing the horizontal position of the target object.

The target object is connected to the rotating arm 332, and then the rotating shaft 331 is driven to rotate by a predetermined angle through the rotation driving structure 32, so that the target object correspondingly rotates along with the rotating arm 332, the horizontal position of the target object is changed, the purpose of adjusting the horizontal position of the target object is achieved, and the subsequent operation of the hoisting device 104 is facilitated.

In one embodiment, the rotation driving structure 32 includes a horizontal driver 321 connected to the support column 311, an adjusting driving wheel 322 disposed at an output shaft of the horizontal driver 321, and an adjusting driven wheel 323 disposed at one end of the rotation shaft 331 and driven by the adjusting driving wheel 322. By the cooperation of the adjustment driving wheel 322 and the adjustment driven wheel 323, the rotational power can be transmitted from the horizontal driver 321 to the rotational shaft 331. Alternatively, the driving adjustment wheel 322 and the driven adjustment wheel 323 may have a gear structure so as to be engaged with each other to transmit rotational power.

In one embodiment, the adjusting driving wheel 322 and the adjusting driven wheel 323 are both in a chain wheel structure, and the rotation driving structure 32 further includes a transmission chain connecting the adjusting driving wheel 322 and the adjusting driven wheel 323 and used for transmitting the rotation power from the adjusting driving wheel 322 to the adjusting driven wheel 323. One end of the transmission chain is engaged with the adjusting driving wheel 322, and the other end of the transmission chain is engaged with the adjusting driven wheel 323, so that the adjusting driving wheel 322 drives the adjusting driven wheel 323.

In one embodiment, two adjusting driving wheels 322 and two adjusting driven wheels 323 are disposed at intervals, and the two adjusting driving wheels 322 respectively drive the two adjusting driven wheels 323 to rotate. Specifically, two transmission chains are also arranged, and the two adjusting driving wheels 322 can improve the reliability of transmission.

In one embodiment, each of the supporting side plates 313 has a rotation hole, and the rotating structure 33 further includes a rotation shaft 331 disposed in each of the rotation holes, and both ends of the rotation shaft 331 are respectively fixed to inner rings of the rotation shaft 331. Both ends of the rotary shaft 331 are respectively transferred to the two support side plates 313 by the two rotary shafts 331.

In one embodiment, the rotating arm 332 includes a rotating plate 3323 having one end connected to the axial side of the rotating shaft 331, a reinforcing rod 3322, and a bearing beam 3321 connected to the other end of the rotating plate 3323 and horizontally extending to hang the target, wherein the reinforcing rod 3322 has two ends respectively connected to the free end of the bearing beam 3321 and the other end of the rotating plate 3323. Optionally, the stiffening rods 3322 are used to increase the structural strength of the load beam 3321 and are disposed at a predetermined angle to the load beam 3321.

In one embodiment, the support structure 31 further comprises a support base 312, and one end of the support column 311 is connected to the support base 312. The support base 312 is laid on the ground, so that the support column 311 is kept in a vertical state.

In one embodiment, the support base 312 includes a support floor 314 disposed in a tiled arrangement, a control cabinet 317 disposed at one end of the support floor 314 and connected to the support column 311, a support wheel mechanism 316 for supporting the support floor 314, and an anti-roll mechanism 315 for balancing the support floor 314. Optionally, a hydraulic oil tank 319 is disposed within the control cabinet 317. The support wheel mechanism 316 is used to move the support base 314 over the ground. The anti-roll mechanism 315 includes a plurality of anti-roll legs connected to the support base 314, each of which can balance the support base 314 during operation and prevent the support base 312 from tipping over.

Optionally, the adjustment mount 20 is coupled to the support base 314 and is spaced apart from the control cabinet 317.

In one embodiment, the leveling device 103 further includes a control mechanism 318 coupled to a side surface of the control cabinet 317 and configured to control the rotational drive mechanism 32. The control mechanism 318 is used to control the rotational drive mechanism 32 and also includes a wireless control module so that the access platform 100 can be remotely operated to reduce radiation to the human body.

Referring to fig. 7 to 10, the lifting device 104 is connected to the leveling device 103 and is used for lifting the target object from a predetermined position or lowering the target object to a predetermined position. Optionally, in this embodiment, the centrifugal pump is used to lift parts such as the impeller 203 from the pump body 201, so as to separate the parts of the centrifugal pump 200, thereby completing the disassembly of the centrifugal pump 200. It will be appreciated that after servicing is completed, the re-assembly of the centrifugal pump 200 can be completed by reversing the above process. The hoisting device 104 comprises: a hanging structure 43, a lifting drive structure 42, and a sliding structure 41. The hanging structure 43 is used for connecting an object to be lifted, and the hanging structure 43 comprises a hanging plate 431 and a hanging connecting piece 432 for connecting the hanging plate 431 and the object. Alternatively, the impeller 203 may be coupled to the lifting plate 431 by a lifting coupling 432 to facilitate separation of the impeller 203 from the pump body 201. One end of the elevating drive structure 42 is connected to the hanging plate 431 and serves to lift the hanging plate 431 upward to separate the impeller 203 from the pump body 201. Further, in the present embodiment, the cross-section of the components of the centrifugal pump 200 is generally circular, and therefore, to facilitate the hoisting of the impeller 203 by the hoisting connector 432 and the hoisting disk 431, the hoisting disk 431 is also circular. The sliding structure 41 is connected to the other end of the lifting driving structure 42 and is slidably connected to the bearing beam 3321, and the sliding structure 41 slides relative to the bearing beam 3321 along a predetermined direction to adjust the relative position between the hoisting disc 431 and the impeller 203, so that the center of the hoisting disc 431 and the center of the impeller 203 are located on a vertical line, thereby facilitating the hoisting connection member 432 to quickly connect the hoisting disc 431 and the impeller 203.

In this embodiment, the sliding structure 41 slides along the length direction of the bearing beam 3321, so as to adjust the relative position between the hoisting disc 431 and the impeller 203, align and center the impeller 203 and the hoisting disc 431, connect the hoisting disc 431 and the impeller 203 through the hoisting connecting member 432, and then the lifting driver drives the hoisting disc 431 to ascend, thereby rapidly completing the detachment of each part of the centrifugal pump 200.

In one embodiment, the sliding structure 41 includes a sliding bottom plate 411 connected to the lifting driving structure 42 and two sliding side plates 412 respectively connected to two ends of the sliding bottom plate 411, the bearing beam 3321 is located between the two sliding side plates 412, and the two sliding side plates 412 slide relative to the bearing beam 3321 along the length direction of the bearing beam 3321, so as to adjust the relative position of the hoisting plate 431 and the impeller 203. Alternatively, the sliding side plate 412 and the bearing beam 3321 may be connected by a structure of sliding grooves, so that the sliding side plate 412 can slide relative to the bearing beam 3321.

In one embodiment, the bearing beam 3321 has a sliding groove 3324 corresponding to each sliding side plate 412, the sliding structure 41 further includes a sliding roller 413 located between the two sliding side plates 412, each sliding side plate 412 has a sliding roller 413, and each sliding roller 413 slides in the corresponding sliding groove 3324 to guide the lifting driving structure 42 to move and adjust the relative position of the hanging plate 431 and the target object. It can be understood that the relative movement between the sliding side plate 412 and the bearing beam 3321 can be rolling friction through sliding and rolling, so that the friction resistance is effectively reduced, and the sliding structure 41 can be conveniently driven to slide relative to the bearing beam 3321 by hand.

In one embodiment, each sliding side plate 412 has two sliding rollers 413 disposed thereon. The pair of sliding rollers 413 can improve the stability of the sliding side plate 412 sliding relative to the bearing beam 3321.

In one embodiment, the lifting drive structure 42 is an electric hoist, and the lifting plate 431 is connected to a wire rope of the electric hoist. By winding and releasing the wire rope, the lifting plate 431 can be lifted or lowered, thereby realizing the disassembly and reassembly of the centrifugal pump 200.

In one embodiment, the wireless control module can remotely control the electric hoist to reduce radiation to human body.

In one embodiment, the lifting disk 431 includes a disk body 4313, lifting ribs 4312 connecting one side disk surface of the disk body 4313 and used for improving the structural strength of the disk body 4313, and lifting hooks 4311 connecting the lifting ribs 4312 and the lifting driving structure 42, and the lifting connecting part 432 is connected to the other side disk surface of the disk body 4313. The lifting hook 4311 is used to connect the disc body 4313 to the lifting drive structure 42, and it can be understood that the lifting hook is connected to a wire rope of the electric block.

In one embodiment, the lifting ribs 4312 are provided in a plurality, and the lifting ribs 4312 are disposed at a common intersection point on the plate body 4313. The plurality of lifting ribs 4312 serve to reinforce and improve the structural strength of the plate body 4313, control the total weight of the lifting plate 431, and maintain the lifting plate 431 with sufficient structural strength.

In one embodiment, the tray body 4313 is formed with a plurality of lifting connection holes 4314, one end of the lifting connection member 432 is connected to the tray body 4313 through the lifting connection holes 4314, and the other end of the lifting connection member 432 is connected to the target. Specifically, hoist and mount connecting piece 432 is bolted construction, and the external screw thread has all been seted up at the both ends of hoist and mount connecting piece 432, and the both ends of hoist and mount connecting piece 432 carry out threaded connection with hoist and mount dish 431 and impeller 203 respectively to convenient assembly and dismantlement.

In one embodiment, a plurality of hoisting connection holes 4314 and hoisting connection members 432 are provided, and the number of the hoisting connection holes 4314 is greater than the number of the hoisting connection members 432, and each hoisting connection hole 4314 is circumferentially arranged around the center position of the disc body 4313 and is provided with a plurality of turns. The distances between the rings of hoisting connection holes 4314 are arranged in an equal ratio or equal difference array, so that the hoisting disc 431 can be adjusted to adapt to parts with different diameters, and the application range of the hoisting device 104 is enlarged.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an overhaul platform for dismantle the maintenance and reassemble the pump, wherein, the pump includes the pump body, connects the pump cover of pump body one end and connection the impeller of pump cover, its characterized in that, overhaul platform includes:

2. The service platform of claim 1, wherein: the clamping mechanism comprises a first hoop connected with the clamping base, a second hoop matched with the first hoop for use and a locking piece for connecting the first hoop and the second hoop, at least one locking piece is arranged at each of two ends of the second hoop, and the pump is clamped between the first hoop and the second hoop; first centre gripping hole has all been seted up at the both ends of first staple bolt, the both ends of second staple bolt correspond second centre gripping hole has been seted up to the position in first centre gripping hole, the retaining member is including wearing to establish first centre gripping hole with correspond the locking bolt in second centre gripping hole and with the lock nut that the locking bolt cooperation was used.

3. The service platform of claim 2, wherein: the clamping structure further comprises a buffer piece which is arranged on the first hoop and/or the second hoop, abuts against the pump and is made of flexible materials; the buffer member is provided in plurality, and each of the buffer members is arranged at intervals around the circumferential direction of the pump.

4. The service platform of claim 1, wherein: the overturning driving mechanism comprises a fixed rotating fixed ring, an overturning driven wheel which is connected with the rotating fixed ring in a rotating mode, a connecting overturning driven wheel, a rotating disc of the rotating base, an overturning driver and an overturning driving wheel which is driven by the overturning driver and drives the overturning driven wheel to rotate, the rotating base is of a disc-shaped structure, and a disc surface of one side of the rotating base is connected with a wheel surface of the overturning driving wheel.

5. The service platform of claim 1, wherein: the adjusting driving mechanism comprises a hydraulic cylinder which is arranged in the height adjusting groove and connected with the adjusting bottom plate, and a piston rod of the hydraulic cylinder drives the sliding seat to slide in the height adjusting groove in a reciprocating manner; the adjusting driving mechanism further comprises two hinged seats, one hinged seat is used for enabling the hydraulic cylinder to be connected to the bottom plate in a rotating mode, the other hinged seat is used for enabling the piston rod to be connected to the sliding seat in a rotating mode, and the rotating plane of the hydraulic cylinder is parallel to the plane determined by the adjusting side plate.

6. The service platform of claim 1, wherein: the adjusting driving mechanism comprises an adjusting driver connected with the adjusting top plate, an adjusting nut connected with the sliding seat and an adjusting lead screw, one end of the adjusting lead screw is connected with the adjusting driver, the other end of the adjusting lead screw extends downwards and is matched with the adjusting nut, and the adjusting driver is used for driving the adjusting lead screw to rotate in a reciprocating mode relative to the adjusting nut so as to adjust the height of the sliding seat; the adjusting driver comprises an adjusting driving seat connected with the adjusting top plate, an adjusting motor arranged on the adjusting driving seat and an adjusting speed reducer connected with the adjusting motor and the adjusting screw rod.

7. The service platform of claim 1, wherein: the rotation driving structure comprises a horizontal driver connected with the supporting stand column, an adjusting driving wheel arranged on an output shaft of the horizontal driver, and an adjusting driven wheel arranged at one end of the rotating shaft and driven by the adjusting driving wheel; the adjusting driving wheel and the adjusting driven wheel are both in a chain wheel structure, and the rotation driving structure further comprises a transmission chain which is connected with the adjusting driving wheel and the adjusting driven wheel and used for transmitting the rotation power from the adjusting driving wheel to the adjusting driven wheel.

8. The service platform of claim 1, wherein: the rotating arm comprises a rotating plate, a reinforcing rod and a bearing beam, wherein one end of the rotating plate is connected with the side surface of the rotating shaft, the bearing beam is connected with the other end of the rotating plate, is horizontally extended and hung with the target object, and the two ends of the reinforcing rod are respectively connected with the free end of the bearing beam and the other end of the rotating plate.

9. The service platform of claim 1, wherein: the sliding structure comprises a sliding bottom plate connected with the lifting driving structure and two sliding side plates respectively connected with two ends of the sliding bottom plate, and the two sliding side plates slide relative to the external structural part along the preset direction; the external structural part is provided with sliding grooves corresponding to the sliding side plates, the sliding structure further comprises sliding rollers positioned between the two sliding side plates, each sliding side plate is provided with one sliding roller, and each sliding roller slides in the corresponding sliding groove to guide the lifting driving structure to move.

10. The service platform of claim 1, wherein: the hoisting disc comprises a disc body, a hoisting rib and a hoisting hook, wherein the disc surface on one side of the disc body is used for improving the structural strength of the disc body, the hoisting rib is connected with the hoisting hook of the lifting driving structure, and the hoisting connecting piece is connected with the disc surface on the other side of the disc body.