CN219005927U - Long-shaft pump transmission shaft dismounting and mounting device - Google Patents

Abstract

The utility model discloses a long shaft pump transmission shaft dismounting and mounting device, which comprises a two-open type clamping copper sleeve, and a female bracket and a male bracket which are arranged outside the clamping copper sleeve; the double-sided axial symmetry structure of clamp copper sheathing for two semi-circular opposite installations, female support and public support also be semi-circular structure, the one end of female support sets up the mounting groove, the one end of public support sets up the installation piece that can with the mounting groove looks adaptation, this end of female support and public support articulates as an organic wholely with the round pin axle that wears its mounting groove and mounting piece on the round pin axle hole altogether, the installation position of female support and public support inner edge with the circumference mounting groove on the clamp copper sheathing is inlayed and is installed and fixed with fixing bolt, the other end of both is fixed with clamping bolt. The advantages are that: the pump shaft can be detached and installed under the condition that the pump shaft is not damaged, so that the service life of the transmission shaft is prolonged, the labor intensity is reduced, the safety coefficient is improved, and the labor cost is saved.

Description

Long-shaft pump transmission shaft dismounting and mounting device

Technical Field

The utility model relates to offshore platform operation, in particular to a tooling facility for conveniently, quickly and nondestructively disassembling and installing a pump shaft in offshore platform operation.

Background

The fire pump of offshore platform adopts long shaft deep well pump mostly, and its pump shaft structure of connecting between motor and pump is the diphase stainless steel transmission shaft that forms with a left-hand screw thread axle precession swivel nut, and the diameter of this transmission shaft is 40mm-60mm, and total length is about 20-25 meters, and every long shaft deep well pump totally has such transmission shaft 8-10. The pump shaft with the structure has the following defects in practical application:

(1) When the pump is lifted for maintenance, the pump shaft is required to be disassembled, the connection between the shaft and the screw sleeve is required to be opened with very large torque, the currently adopted method is that two large pipe tongs clamp the pump to be screwed in the opposite axial directions, and two people grasping each pipe tongs can only loose the pump shaft with force by using a force-applying lever at the same time, so that the disassembly efficiency is low.

(2) Because two pipe tongs are required to be separated by a distance of one shaft sleeve, the shaft is extremely easy to distort and deform in the disassembling process, or the threads are blocked due to uneven stress, so that the pump shaft is also easy to be damaged by the calipers under the condition that the disassembly cannot be performed.

(3) The manual pipe wrench is detached at least by 4 people, so that the disassembly time is long, the danger that an operator collides with and falls down due to sudden unloading force exists, and the safety of the operator cannot be guaranteed.

Based on the above, the applicant decides to develop a specialized disassembly tool capable of solving the above problems, so as to ensure the integrity of the pump shaft and the personal safety of operators in the process of disassembling and installing the pump shaft.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide the long-shaft pump transmission shaft dismounting and mounting device which can ensure the integrity of a pump shaft and the personal safety of operators in the process of dismounting and mounting the pump shaft.

The technical scheme of the utility model is as follows:

the dismounting and mounting device for the long-shaft pump transmission shaft comprises a two-open type clamping copper sleeve, and a female bracket and a male bracket which are arranged outside the clamping copper sleeve; the clamping copper sleeve is of a two-sided semicircular two-sided axial symmetrical structure which is installed oppositely, a plurality of bolt holes are uniformly distributed on a semicircle, a circumferential installation groove is processed in the axial middle of the clamping copper sleeve, reinforcing ribs are arranged on the two sides of the clamping copper sleeve at intervals respectively, and a space is reserved between the radial plane of the semicircle and the radial center line of the semicircle; the female bracket and the male bracket are also of semicircular structures, one end of the female bracket is provided with a mounting groove, one end of the male bracket is provided with a mounting block which can be matched with the mounting groove, the ends of the female bracket and the male bracket are hinged into a whole through pin shafts which pass through pin shaft holes on the mounting groove and the mounting block, the mounting positions of the inner edges of the female bracket and the male bracket are inlaid and mounted with the circumferential mounting groove on the clamping copper sleeve and are fixed through fixing bolts, and the other ends of the female bracket and the male bracket are fixed through the clamping bolts; the hydraulic cylinder connecting frames are welded on the female bracket and the male bracket respectively, and the tail ends of the hydraulic cylinder connecting frames are provided with hydraulic cylinder mounting rods connected with the hydraulic cylinders.

The number of bolt holes uniformly distributed in the semicircle of the clamping copper sleeve is 4.

The distance between the radial plane of the semicircle of the clamping copper sleeve and the radial center line is 1mm to 1/10 of the inner diameter, and the optimal distance is 2.5mm.

The female bracket and the male bracket are provided with a plurality of lightening holes, and the optimal selection is 4.

The utility model overcomes a plurality of defects in the prior art and has the beneficial effects that:

(1) The original manual pipe wrench dismounting mode is changed into a hydraulic driving mode, larger torque is output, the pump shaft can be dismounted and mounted under the condition that the pump shaft is not damaged, the dismounting time can be shortened to half of the original time, the working efficiency is improved, and the service life of the transmission shaft can be prolonged.

(2) The operation of disassembling and installing the transmission shaft can be easily completed only by operating the manual hydraulic pump, operators can be reduced to 2 from original 4, the labor intensity is reduced, the safety coefficient is improved, and the labor cost is saved.

Drawings

FIG. 1 is a schematic diagram of the overall structure and application of the present utility model;

FIG. 2 is a schematic view of the structure of the female bracket of FIG. 1;

FIG. 3 is a schematic view of the structure of the male stent of FIG. 1;

fig. 4 is a schematic structural view of the two-open clamping copper sleeve 4 in fig. 1;

fig. 5 is a side view of fig. 4.

In the figure, the reference numerals are 1, a hydraulic cylinder, 2, a female bracket, 3, a transmission shaft, 4, a two-way clamping copper sleeve, 5, a clamping bolt, 6, a male bracket, 7, a mounting groove, 8, a pin shaft, 9, a threaded shaft sleeve, 10, a fixing bolt, 11, reinforcing ribs, 12, a mounting block, 13, a hydraulic cylinder mounting rod, 14, a pin shaft hole, 15, a bolt hole, 16, a mounting position, 17, a weight reducing hole, 18, a circumferential mounting groove, 19, a fastening bolt mounting hole, 20 and a hydraulic cylinder connecting frame.

Detailed Description

In order that the utility model may be more readily understood, a detailed description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

Referring to fig. 1 in combination with fig. 2 and 3, the dismounting and mounting device of the long shaft pump transmission shaft of the utility model comprises a two-open type clamping copper sleeve 4, and also comprises a female bracket 2 and a male bracket 6 which are mounted outside the clamping copper sleeve 4;

referring to fig. 4 and 5, the two-open type clamping copper sleeve 4 has a two-sided axially symmetrical structure with two opposite semi-circles, 4 bolt holes 15 are uniformly distributed on the semi-circles, a circumferential mounting groove 18 is processed in the middle of the axial direction, reinforcing ribs 11 are respectively arranged on the two sides at intervals of the bolt holes 15, and in order to realize reliable locking force, the distance between the radial plane of the semi-circles and the radial center line is 1/10 of the inner diameter, and the optimal distance is 2.5mm;

referring to fig. 2 and 3, and referring to fig. 1, the female bracket 2 and the male bracket 6 are both in a semicircular structure corresponding to the outer diameter of the clamping copper bush 4, one end of the female bracket 2 is provided with a mounting groove 7, one end of the male bracket 6 is provided with a mounting block 12 capable of being matched with the mounting groove 7, the female bracket 2 and the male bracket 6 are hinged into a whole through a pin shaft which passes through the mounting groove 7 and a pin shaft hole 14 on the mounting block 12, and the other ends of the female bracket 2 and the male bracket are clamped and fixed through a clamping bolt 5 after being mounted with the clamping copper bush 4; the mounting positions 16 at the inner edges of the female bracket 2 and the male bracket 6 are embedded and mounted with the circumferential mounting grooves 18 on the clamping copper sleeve 4, and are fixed by fixing bolts 10 through bolt holes 15 of the female bracket and the male bracket; in order to reduce the weight of the whole device, weight reducing holes 17 are formed in the female bracket 2 and the male bracket 6; the hydraulic cylinder connecting frame 20 is welded on the female bracket 2 and the male bracket 6 respectively, and the tail end of the hydraulic cylinder connecting frame 20 is fixedly provided with a hydraulic cylinder mounting rod 13 which is connected with the hydraulic cylinder 1 through threads.

The long-axis pump transmission shaft dismounting and mounting device is used in pairs when the long-axis pump overhauls and needs to dismount and mount the transmission shafts, and the application method is as follows (refer to figure 1):

(1) Preparing two long-axis pump transmission shaft dismounting and mounting devices (hereinafter referred to as devices), respectively opening clamping bolts 5 on the two devices, respectively clamping the two devices on the long-axis pump transmission shaft 3 and a threaded shaft sleeve 9 (the distance between the two devices can be determined according to the actual condition of a construction site), fastening the female bracket 2 and the male bracket 6 by the clamping bolts 5, respectively clamping the two devices on the long-axis pump transmission shaft 3 and the threaded shaft sleeve 9, and enabling the positions of hydraulic cylinder mounting rods 13 on the two devices to be opposite;

(2) Two hydraulic cylinders 1 are respectively arranged on hydraulic cylinder installation rods 13 of two devices and fixed by nuts, so that the preparation work of disassembling and installing a transmission shaft is finished;

(3) The manual hydraulic pump is used for driving the two hydraulic cylinders 1, so that the upper device and the lower device rotate relatively, the threaded shaft sleeve 9, the long shaft pump transmission shaft 3 and the long shaft pump transmission shaft 3 on the threaded shaft sleeve 9 are unscrewed or screwed relatively, and the long shaft transmission shaft is detached and installed.

In the above application process, in order to further improve the fastening degree of the device on the long shaft pump transmission shaft 3 and the threaded shaft sleeve 9, after the fastening of the clamping bolt 5 is completed, the fastening bolt is fastened again by another bolt through the fastening bolt mounting hole 19 on the female bracket 2 in the direction perpendicular to the clamping bolt 5, so as to prevent the possible loosening of the clamping bolt 5 in the working process.

Compared with the prior art, the utility model has the innovation points that:

(1) The female bracket 2 and the male bracket 6 are connected through a pin shaft and can rotate around the pin shaft, circumferential fastening is completed through a clamping bolt after the female bracket and the male bracket are installed in place, and clamping force on the long-shaft pump transmission shaft 3 and the threaded shaft sleeve 9 can be formed through the clamping copper sleeve 4 in the female bracket and the male bracket.

(2) The double-hydraulic-cylinder pressing mode of the two hydraulic cylinders 1 is adopted, so that the long-shaft pump transmission shaft 3 and the threaded shaft sleeve 9 are uniformly stressed, and the situation that the screw thread is blocked and cannot be detached or installed due to uneven stress or distortion in the detaching or installing process is prevented.

(3) The clamping copper sleeve 4, the female bracket 2 and the male bracket 6 are fixed by bolts, and can be replaced at any time (because the outer diameters of the transmission shafts of the long-shaft pumps are formed into a series, and the transmission shafts are 43, 52 and the like, the long-shaft pumps can be suitable for all long-shaft pumps only by processing the corresponding copper sleeve for replacement), so that the scrapping of the whole device is avoided, and the working cost is saved.

(4) The clamping copper sleeve 4 is matched with the female bracket 2 and the male bracket 6 by the circumferential mounting groove, and the inner walls of the two open copper sleeves are in a right circular shape with the same diameter as the long shaft pump transmission shaft and have a distance, so that the two open clamping copper sleeves 4 can be prevented from contacting with themselves when in clamping so that pressure cannot be applied to the transmission shaft.

(5) The inner wall of the clamping copper sleeve 4 is smooth, and is tightly matched with the outer wall of the transmission shaft during clamping, but because the texture of copper is softer, the friction force can be enhanced by utilizing intermolecular van der Waals force when the copper is tightly matched with the transmission shaft, so that huge torque can be provided under the condition of not damaging the transmission shaft.

The technical solutions of the present utility model have been described above schematically with reference to the accompanying drawings and examples, which description is not limiting. It will be appreciated by those of ordinary skill in the art that in the practice of the utility model, certain changes in the structural arrangement or configuration of the parts may be made and that other persons may make similar designs in light of the teachings thereof. It should be noted in particular that all obvious modifications are included in the scope of protection of the present utility model, as long as they do not depart from the gist of the utility model.

Claims (5)

1. The utility model provides a major axis pump transmission shaft dismantles, installation device, is in including pressing from both sides tight copper sheathing and installing press from both sides the outside female support of tight copper sheathing and public support, its characterized in that: the clamping copper sleeve is of a two-sided semicircular two-sided axial symmetrical structure which is installed oppositely, a plurality of bolt holes are uniformly distributed on a semicircle, a circumferential installation groove is processed in the axial middle of the clamping copper sleeve, reinforcing ribs are arranged on two sides of the clamping copper sleeve at intervals of the bolt holes respectively, and a space is reserved between the radial plane of the semicircle and the radial center line of the semicircle; the female bracket and the male bracket are also of semicircular structures, one end of the female bracket is provided with a mounting groove, one end of the male bracket is provided with a mounting block which can be matched with the mounting groove, the ends of the female bracket and the male bracket are hinged into a whole through pin shafts which pass through pin shaft holes on the mounting groove and the mounting block, the mounting positions of the inner edges of the female bracket and the male bracket are inlaid and mounted with the circumferential mounting groove on the clamping copper sleeve and are fixed through fixing bolts, and the other ends of the female bracket and the male bracket are fixed through the clamping bolts; the hydraulic cylinder connecting frames are welded on the female bracket and the male bracket respectively, and the tail ends of the hydraulic cylinder connecting frames are provided with hydraulic cylinder mounting rods connected with the hydraulic cylinders.

2. The long-shaft pump drive shaft dismounting and mounting apparatus as claimed in claim 1, wherein: the number of bolt holes uniformly distributed on the semi-circle of the clamping copper sleeve is 4.

3. The long-shaft pump drive shaft dismounting and mounting apparatus as claimed in claim 1, wherein: the distance between the radial plane of the semicircle of the clamping copper sleeve and the radial center line is 1mm to 1/10 of the inner diameter.

4. A long axis pump drive shaft removal and installation apparatus as claimed in claim 3, wherein: the distance between the radial plane of the semicircle of the clamping copper sleeve and the radial center line is 2.5mm.

5. The long-shaft pump drive shaft dismounting and mounting apparatus as claimed in claim 1, wherein: the female bracket and the male bracket are respectively provided with 4 lightening holes.

Images