CN113942933B

CN113942933B - Installation auxiliary device for large coal mill

Info

Publication number: CN113942933B
Application number: CN202111187636.8A
Authority: CN
Inventors: 回新华; 高超; 何宗才; 王刚; 梁路丰; 林彬
Original assignee: China National Chemical Engineering Sixth Construction Co Ltd
Current assignee: China National Chemical Engineering Sixth Construction Co Ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2023-04-25
Anticipated expiration: 2041-10-12
Also published as: CN113942933A

Abstract

The invention discloses an installation auxiliary device of a large coal mill, which comprises a cross beam, a track hoisting mechanism, an auxiliary positioning mechanism and a distance adjusting mechanism, wherein the track hoisting mechanism comprises four groups of suspension beams, a traveling crane, an electric hoist and a track beam respectively; according to the invention, the suspension beams and the track beams which are arranged in a row manner through the four groups of cross structures are used as moving tracks and are arranged at the indoor top beam, so that the travelling crane and the electric hoist are driven to displace in the tracks, and therefore, the components and the structure of the coal mill are hoisted, the device can be flexibly moved and adjusted at the limited space, and the large structure can be hoisted through the matching of the four groups of travelling cranes and the electric hoist according to requirements, so that the stability in a hoisting link is ensured.

Description

Installation auxiliary device for large coal mill

Technical Field

The invention relates to the technical field of coal mills, in particular to an installation auxiliary device of a large-sized coal mill.

Background

The coal mill is widely applied to various other industries such as steel mills, thermal power plants, cement plants, metal ore industries, special chemical industry and the like, and in the assembly operation of the large-scale coal mill, the auxiliary device is often needed to realize the integral installation of the coal mill due to the fact that parts of the coal mill are large.

Because the equipment installation of large-scale coal pulverizer receives the space influence of device, the device spatial layer height is less, and hoisting machinery can't install, and also do not have under the circumstances of driving of large-tonnage in the device, the equipment of coal pulverizer is a problem, when hoisting the part of coal pulverizer, the equilibrium and the displacement of hoisting in-process are difficult to the accuse to increase the operation degree of difficulty of coal pulverizer installation work, and because the part volume diameter of coal pulverizer is great, produce the skew with predetermined intermediate point easily during the hoist and mount, thereby increase the integrality of outer facade after the coal pulverizer equipment, influence the follow-up normal use of coal pulverizer.

Disclosure of Invention

The invention aims to provide a large coal mill installation auxiliary device for solving the related problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the device comprises a cross beam, a track hoisting mechanism, an auxiliary positioning mechanism and a distance adjusting mechanism, wherein the track hoisting mechanism comprises four groups of suspension beams, a travelling crane, electric hoists and track beams respectively, the four groups of suspension beams are fixedly connected to four corners on the outer side of the cross beam, the bottoms of the four groups of suspension beams are fixedly connected with the track beams, the inner sides of the four groups of track beams are provided with travelling cranes in sliding fit, and the tops of the four groups of travelling cranes are provided with electric hoists;

the auxiliary positioning mechanism comprises four fixing tables, four lifting devices, photoelectric sensors and vacuum chucks respectively, the four fixing tables are provided with the lifting devices at the tops of the fixing tables, the four lifting devices are provided with the vacuum chucks at the tops of the lifting devices, and the four photoelectric sensors are arranged on one sides, away from each other, of the fixing tables.

Preferably, the interval adjusting mechanism comprises a first mounting groove, a second mounting groove, a first worm disc, a second worm disc, a worm sleeve, an internal thread pipe, a bidirectional screw rod and a servo motor, wherein the first mounting groove and the second mounting groove are fixedly connected to the top of the cross beam respectively, the middle positions of the inner parts of the first mounting groove and the second mounting groove are sleeved with the bidirectional screw rod, the two groups of the bidirectional screw rods are symmetrically sleeved with the internal thread pipe with thread adaptation, the middle positions of the outer sides of the bidirectional screw rods are sleeved with the worm sleeve, the servo motor is fixedly connected to the middle position of the top of the first mounting groove, the output end of the first mounting groove is provided with the first worm disc and the second worm disc respectively, and the first worm disc is mutually meshed with the second worm disc and the worm sleeve.

Preferably, the top of the cross beam is provided with a fixed beam, the fixed beam is fixedly connected with the cantilever beam, a monitoring camera is arranged at the middle position of the bottom of the cross beam, and the four corners of the inner side of the cross beam are provided with joint grooves, and the joint grooves are fixedly connected with the cantilever beam.

Preferably, the inner corners of the four groups of suspension beams, which are close to one another, are fixedly connected with reinforcing beams, positioning blocks are arranged at the middle positions of the tops of the reinforcing beams, and the positioning blocks are fixedly connected with the first mounting groove and the second mounting groove respectively.

Preferably, the bottom rigid coupling of four groups the driving has the balanced ring, and the bottom of balanced ring is equipped with displacement sensor, four groups the one side that the track roof beam kept away from each other is equipped with spacing seat, and spacing seat and driving looks adaptation each other.

Preferably, four groups of fixed bench tops are close to one another and are provided with laser range finders, four groups of fixed bench tops are far away from one another and are provided with signal lamps, the signal lamps are matched with the photoelectric sensors, and the sensing heads of the four groups of photoelectric sensors are arranged in the vertical downward direction.

Preferably, one side that first mounting groove and second mounting groove kept away from each other is equipped with the stop collar, and stop collar and internal thread pipe looks adaptation each other, the inside one end of first mounting groove and second mounting groove all is equipped with the spout, and the inboard symmetry of spout be equipped with the slider of internal thread pipe rigid coupling.

Preferably, bearing seats are symmetrically arranged at the middle positions inside the first mounting groove and the second mounting groove, two groups of bidirectional screw rods are sleeved on the inner sides of the bearing seats, the first worm wheel is meshed with the worm sleeves on the outer sides of one group of bidirectional screw rods, and the second worm wheel is meshed with the worm sleeves on the outer sides of the other group of bidirectional screw rods.

Compared with the prior art, the invention provides the installation auxiliary device for the large coal mill, which has the following beneficial effects:

1. according to the invention, the suspension beams and the track beams which are arranged in a row manner through the four groups of cross structures are used as moving tracks and are arranged at the indoor top beam, so that the travelling crane and the electric hoist are driven to displace in the tracks, and therefore, the components and the structure of the coal mill are hoisted, so that the device can flexibly move and adjust at the limited space, the large structure can be hoisted through the matching of the four groups of travelling cranes and the electric hoist according to the requirements, the stability in a hoisting link is ensured, and the upper part of an assembly component with a specified lifting height can be adsorbed and positioned under the structural matching of an auxiliary positioning mechanism, so that the electric hoist can be lifted together, thereby relieving the bearing capacity of the electric hoist, improving the balance of the lifting of the component and the accuracy of displacement adjustment, and further improving the stability and the working efficiency of the device in the structure assembly of the coal mill.

2. According to the invention, by means of structural cooperation of the spacing adjusting mechanism and the auxiliary positioning mechanism, the spacing adjusting mechanism can be used for outwards expanding the four groups of fixing tables to adjust the spacing, so that the fixing tables drive the photoelectric sensor to adjust and position the designated spacing, in this state, if the outer volume of the lifted and assembled coal mill part corresponds to the vertical plane of the photoelectric sensor, the photoelectric sensor can sense and automatically alarm, so that a worker is warned that the assembly of the coal mill is not accurately spliced, an operator can conveniently and quickly know and refine the adjustment, and the structural assembly integrity and stability of the coal mill are greatly enhanced.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a first top cross-sectional view of the present invention;

FIG. 3 is a second top cross-sectional view of the present invention;

FIG. 4 is a bottom view of the present invention;

FIG. 5 is an enlarged view of the structure of the auxiliary positioning mechanism and the spacing adjustment mechanism of the present invention;

FIG. 6 is a diagram showing the engagement of the first and second worm disks with the worm gear housing in accordance with the present invention;

fig. 7 is a perspective view of a vacuum chuck according to the present invention.

In the figure: 1. a cross beam; 2. a track hoisting mechanism; 21. a cantilever beam; 22. driving; 23. an electric hoist; 24. a rail beam; 3. an auxiliary positioning mechanism; 31. a fixed table; 32. a lifting appliance; 33. a photoelectric sensor; 34. a vacuum chuck; 4. a spacing adjustment mechanism; 41. a first mounting groove; 42. a second mounting groove; 43. a first volute; 44. a second volute; 45. a worm sleeve; 46. an internally threaded tube; 47. a two-way screw rod; 48. a servo motor.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-7, the present invention provides a technical solution: large-scale coal pulverizer installs auxiliary device, including cross beam 1, track hoist and mount mechanism 2, auxiliary positioning mechanism 3 and interval adjustment mechanism 4, its characterized in that: the track hoisting mechanism 2 comprises four groups of suspension beams 21, travelling cranes 22, electric hoists 23 and track beams 24, wherein the four groups of suspension beams 21 are fixedly connected to four corners of the outer side of the cross beam 1, the track beams 24 are fixedly connected to the bottoms of the four groups of suspension beams 21, the travelling cranes 22 in sliding fit are arranged on the inner sides of the four groups of track beams 24, and the electric hoists 23 are arranged on the tops of the four groups of travelling cranes 22;

the auxiliary positioning mechanism 3 comprises four fixing tables 31, lifting tools 32, photoelectric sensors 33 and vacuum chucks 34, wherein the fixing tables 31 are respectively provided with the lifting tools 32 at the tops of the four fixing tables 31, the vacuum chucks 34 are respectively provided at the tops of the four lifting tools 32, and the photoelectric sensors 33 are respectively arranged at one sides of the four fixing tables 31, which are far away from each other.

As a preferable scheme of the present embodiment: the space adjusting mechanism 4 comprises a first mounting groove 41, a second mounting groove 42, a first worm disc 43, a second worm disc 44, a worm sleeve 45, an internal thread pipe 46, a two-way screw rod 47 and a servo motor 48, wherein the first mounting groove 41 and the second mounting groove 42 are fixedly connected to the top of the cross beam 1 respectively, the two-way screw rods 47 are sleeved at the middle positions inside the first mounting groove 41 and the second mounting groove 42, the internal thread pipe 46 with thread adaptation is symmetrically sleeved at the outer sides of the two groups of two-way screw rods 47, the worm sleeve 45 is sleeved at the middle position outside the two groups of two-way screw rods 47, the servo motor 48 is fixedly connected to the middle position of the top of the first mounting groove 41, the output end of the first mounting groove 41 is provided with the first worm disc 43 and the second worm disc 44 respectively, and the first worm disc 43 is meshed with the second worm disc 44 and the worm sleeve 45.

As a preferable scheme of the present embodiment: the top of the cross beam 1 is provided with a fixed beam, the fixed beam is fixedly connected with the cantilever beam 21, a monitoring camera is arranged at the middle position of the bottom of the cross beam 1, the four corners of the inner side of the cross beam 1 are provided with joint grooves, the joint grooves are fixedly connected with the cantilever beam 21, and the auxiliary installation work of the device and the operation real-time monitoring of the structural parts can be performed through the monitoring camera, so that the adjustment or maintenance work can be conveniently performed according to the monitoring state.

As a preferable scheme of the present embodiment: the inner corners of the four groups of suspension beams 21, which are close to one another, are fixedly connected with reinforcing beams, positioning blocks are arranged at the middle positions of the tops of the reinforcing beams, and are fixedly connected with the first mounting grooves 41 and the second mounting grooves 42 respectively, so that the stability between the four groups of suspension beams 21 and the first mounting grooves 41 and the second mounting grooves 42 is improved, and the structural integrity of the device is enhanced.

As a preferable scheme of the present embodiment: the bottom rigid coupling of four group's driving 22 has the balanced ring, and the bottom of balanced ring is equipped with displacement sensor, and one side that four group's track roof beam 24 kept away from each other is equipped with spacing seat, and spacing seat and driving 22 looks adaptation each other, and the accessible balanced ring strengthens the stability that driving 22 moved and the equilibrium that electric block 23 used to utilize displacement sensor to learn the distance that driving 22 was at track roof beam 24 displacement.

As a preferable scheme of the present embodiment: one side that four groups fixed station 31 tops are close to each other is equipped with laser range finder, and one side that four groups fixed station 31 tops are kept away from each other is equipped with the signal lamp, and signal lamp and photoelectric sensor 33 mutually support, and the sensing head of four groups photoelectric sensor 33 is perpendicular downward direction and settles, is convenient for through the perpendicular perception of four groups photoelectric sensor 33 to report to the police through the signal lamp voluntarily, be convenient for the staff learn whether the position corresponds, and finely tune work according to the demand.

As a preferable scheme of the present embodiment: one side that first mounting groove 41 and second mounting groove 42 keep away from each other is equipped with the stop collar, and stop collar and internal thread pipe 46 looks adaptation, and the inside one end of first mounting groove 41 and second mounting groove 42 all is equipped with the spout, and the inboard symmetry of spout be equipped with the slider of internal thread pipe 46 rigid coupling, can lead and spacing the internal thread pipe, increase the stability that internal thread pipe 46 removed.

As a preferable scheme of the present embodiment: the middle positions inside the first mounting groove 41 and the second mounting groove 42 are symmetrically provided with bearing seats, two groups of bidirectional screw rods 47 are sleeved on the inner sides of the bearing seats, the first worm wheel 43 is meshed with a worm sleeve 45 on the outer side of one group of bidirectional screw rods 47, the second worm wheel 44 is meshed with a worm sleeve 45 on the outer side of the other group of bidirectional screw rods 47, the first worm wheel 43 and the second worm wheel 44 are enabled to rotate simultaneously and meshed with the worm sleeve 45, and accordingly the bidirectional screw rods 47 are driven to rotate, and space adjustment work is carried out on structural components mounted on the fixed table 31.

In the embodiment 1, as shown in fig. 1-4, the auxiliary device uses the cross beam 1 as a vertical corresponding surface at the preset assembling middle of the coal mill, so that the cross beam 1 is used as a main frame body to arrange four groups of suspension beams 21, the rail beams 24 can be corrected to be in an inclined structure or an arc structure as self-made rail beams 24 according to the field requirement, and the self-made rail beams 24 are assembled at four corners of the cross beam 1, so that the auxiliary device selects structural components with specified specification and dimension according to the field practical situation, and each group of travelling crane 22 and rail beams 24 are independently controlled, so that the coal mill is assembled in a limited space by using the horizontal displacement of the travelling crane 22 and the vertical lifting of the electric hoist 23.

In embodiment 2, as shown in fig. 1-5, when the device is lifted and assembled, the monitoring camera below the cross beam 1 can be utilized to vertically correspond to the assembly center point of the coal mill, and the monitoring camera is used for 360-degree dead angle-free monitoring, so that the vertical sensing of four groups of photoelectric sensors 33 can be matched to observe and finely tune the assembly of the components of the coal mill, and meanwhile, whether the operation of the structural components of the device is stable or not can be observed, and the maintenance and the overhaul are facilitated according to the loss generated by the components.

Working principle: when the device is used, the cross beam 1 is used as a main structure positioning piece and is arranged at the center point of a vertical plane of a top beam above a coal mill assembly, four groups of suspension beams 21 and track beams 24 are fixedly connected in the top beam of an indoor site in a cross structure, so that the structure is assembled in a limited space, then the track beams 24 are driven to horizontally displace by the crane 22 through the structural cooperation of each group of track beams 24 and the crane 22, the position of parts required to be assembled is adjusted, and then an electric hoist 23 is utilized to drive a lifting appliance to lift, so that the parts of the coal mill are lifted as an auxiliary part and are matched with an operator for assembly, when the large part is lifted, the four groups of track beams 24 and the crane 22 are utilized for carrying out hooking lifting at four corners of the large part through the four groups of electric hoists 23, so that the large part is stably lifted at the center of the cross beam 1 and the vertical plane, and the auxiliary assembly of the large coal mill is promoted under the limited space;

along with the suspension lifting of coal mill parts, the first worm disk 43 and the second worm disk 44 can be driven to rotate simultaneously by utilizing the starting of the servo motor 48, the two groups of bidirectional screw rods 47 can be driven to rotate through the mutual engagement of the matching of the first worm disk 43 and the second worm disk 44 and the worm sleeve 45, the bidirectional screw rods 47 are driven to expand the outer internal thread pipes 46 to adjust the space, at the moment, the fixed table 31 can be driven to adjust the space according to requirements through the internal thread pipes 46, after the fixed table 31 drives the photoelectric sensor 33 to adjust the designated space, the lifting diameter of the coal mill parts can be limited on the vertical plane, when the vertical plane of the parts corresponds to the photoelectric sensor 33, the photoelectric sensor 33 can automatically sense and alarm, so that operators can be prompted to quickly know that the parts of the coal mill cannot be combined with the preset middle point, the fine adjustment work is carried out, the structural assembly efficiency of the coal mill is improved, and when the four groups of travelling crane 22 and the electric hoist 23 lift the large parts, the lifting of the large parts can be driven to descend through the space adjustment of the fixed table 31, the photoelectric sensor 33 is driven to lift the lifting position the large parts by utilizing the photoelectric sensor 33, and the lifting stability of the electric hoist can be improved.

Finally, it should be noted that the above description is only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and that the simple modification and equivalent substitution of the technical solution of the present invention can be made by those skilled in the art without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. Large-scale coal pulverizer installs auxiliary device, including cross crossbeam (1), track hoist and mount mechanism (2), auxiliary positioning mechanism (3) and interval adjustment mechanism (4), its characterized in that: the track hoisting mechanism (2) comprises four groups of suspension beams (21), four groups of travelling cranes (22), an electric hoist (23) and track beams (24) respectively, wherein the four groups of suspension beams (21) are fixedly connected to four corners on the outer side of the cross beam (1), the track beams (24) are fixedly connected to the bottom of the four groups of suspension beams (21), the travelling cranes (22) in sliding fit are arranged on the inner sides of the four groups of track beams (24), and the electric hoist (23) is arranged on the tops of the four groups of travelling cranes (22);

the auxiliary positioning mechanism (3) comprises fixed tables (31), lifting devices (32), photoelectric sensors (33) and vacuum chucks (34) respectively, the fixed tables (31) are four groups, the lifting devices (32) are arranged at the tops of the four groups of the fixed tables (31), the vacuum chucks (34) are arranged at the tops of the four groups of the lifting devices (32), and the photoelectric sensors (33) are arranged at one sides, far away from each other, of the fixed tables (31);

the distance adjusting mechanism (4) expands the four groups of fixing tables (31) outwards to adjust the distance.

2. The large coal mill installation aid of claim 1, wherein: the pitch adjustment mechanism (4) respectively comprises a first mounting groove (41), a second mounting groove (42), a first worm disk (43), a second worm disk (44), a worm sleeve (45), an inner threaded pipe (46), a two-way screw rod (47) and a servo motor (48), wherein the first mounting groove (41) and the second mounting groove (42) are respectively fixedly connected to the top of the cross beam (1), the two-way screw rods (47) are respectively sleeved at the middle positions inside the first mounting groove (41) and the second mounting groove (42), the inner threaded pipes (46) with thread adaptation are symmetrically sleeved at the outer sides of the two-way screw rods (47), the worm sleeves (45) are sleeved at the middle positions outside the two-way screw rods (47), the servo motor (48) is fixedly connected to the middle positions of the top of the first mounting groove (41), the output end of the first mounting groove (41) is respectively provided with the first worm disk (43) and the second worm disk (44), and the first worm disk (43) and the second worm sleeve (45) are meshed with the worm sleeve (45).

3. The large coal mill installation aid of claim 1, wherein: the top of cross crossbeam (1) is equipped with the fixed beam, and fixed beam and cantilever beam (21) rigid coupling, the intermediate position department of cross crossbeam (1) bottom is equipped with the monitoring camera, the inboard four corners department of cross crossbeam (1) has seted up the joint groove, and joint groove and cantilever beam (21) rigid coupling.

4. The large coal mill installation aid of claim 1, wherein: the inner corners of the four groups of suspension beams (21) close to one side are fixedly connected with reinforcing beams, positioning blocks are arranged at the middle positions of the tops of the reinforcing beams, and the positioning blocks are fixedly connected with a first mounting groove (41) and a second mounting groove (42) respectively.

5. The large coal mill installation aid of claim 1, wherein: the bottom of four groups of driving (22) is fixedly connected with the balance ring, and the bottom of balance ring is equipped with displacement sensor, and four groups of rail beams (24) are equipped with spacing seat in one side that keeps away from each other, and spacing seat and driving (22) looks adaptation each other.

6. The large coal mill installation aid of claim 1, wherein: four groups one side that fixed station (31) top is close to each other is equipped with laser range finder, four groups one side that fixed station (31) top is kept away from each other is equipped with the signal lamp, and signal lamp and photoelectric sensor (33) mutually support, four groups the sensor head of photoelectric sensor (33) is perpendicular downward direction and settles.

7. The large coal mill installation aid of claim 2, wherein: one side that first mounting groove (41) and second mounting groove (42) kept away from each other is equipped with the stop collar, and stop collar and internal thread pipe (46) looks adaptation each other, the inside one end of first mounting groove (41) and second mounting groove (42) all is equipped with the spout, and the inboard symmetry of spout be equipped with the slider of internal thread pipe (46) rigid coupling.

8. The large coal mill installation aid of claim 2, wherein: the middle positions inside the first mounting groove (41) and the second mounting groove (42) are symmetrically provided with bearing seats, two groups of bidirectional screw rods (47) are sleeved on the inner sides of the bearing seats, the first worm wheel (43) is meshed with a worm sleeve (45) on the outer side of one group of bidirectional screw rods (47), and the second worm wheel (44) is meshed with a worm sleeve (45) on the outer side of the other group of bidirectional screw rods (47).