CN109489055B - Pin shaft assembly, chain plate assembly, assembling method of chain plate assembly and boiler grate - Google Patents
Pin shaft assembly, chain plate assembly, assembling method of chain plate assembly and boiler grate Download PDFInfo
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- CN109489055B CN109489055B CN201811494061.2A CN201811494061A CN109489055B CN 109489055 B CN109489055 B CN 109489055B CN 201811494061 A CN201811494061 A CN 201811494061A CN 109489055 B CN109489055 B CN 109489055B
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- ring plate
- pin
- shaft sleeve
- assembly
- plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H11/00—Travelling-grates
- F23H11/18—Details
- F23H11/28—Replaceable burning-surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G13/00—Chains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
- F16G15/12—Chain links
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H17/00—Details of grates
- F23H17/08—Bearers; Frames; Spacers; Supports
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The invention discloses a pin shaft assembly, a chain plate assembly, an assembly method of the chain plate assembly and a boiler grate. The pin shaft assembly comprises a pin shaft, the pin shaft comprises a pin head and a pin rod, a shaft sleeve is sleeved in the middle of the pin rod, and a baffle ring is fixedly sleeved at the end part of the pin rod; a first gap for enabling the first large ring plate to be sleeved and assembled on the pin rod is reserved between the pin head and the shaft sleeve, the pin head and the shaft sleeve respectively form limit positions of the first large ring plate on two sides in the thickness direction, a second gap for enabling the second large ring plate to be sleeved and assembled on the pin rod is reserved between the shaft sleeve and the retaining ring, and the shaft sleeve and the retaining ring respectively form limit positions of the second large ring plate on two sides in the thickness direction; the outer surface of the shaft sleeve is provided with a first assembly position for sleeving and assembling the first small ring plate and a second assembly position for sleeving and assembling the second small ring plate, the first assembly position is arranged in the direction close to the pin head, and the second assembly position is arranged in the direction close to the retaining ring. The difficulty of disassembling, assembling and maintaining the whole chain plate can be reduced, and the quick disassembling, assembling and maintaining of the chain plate can be realized.
Description
Technical Field
The invention relates to the technical field of boiler grate structures, in particular to a pin shaft assembly. In addition, the invention also relates to an assembling method of the chain plate assembly comprising the pin shaft assembly. In addition, the invention also relates to a chain plate assembly obtained by adopting the assembling method of the chain plate assembly. In addition, the invention also relates to a boiler grate comprising the chain plate assembly.
Background
The chain grate is one of the most used mechanized burning equipment in industrial boilers. The combustion mode of the chain grate is moving fire bed combustion, and the combustion ignition condition is 'limited ignition'. The fuel enters the fire grate through the charging hopper, enters the furnace along with the movement of the fire grate and starts the combustion process, and the burnt-out waste residues are discharged to a slag well at the tail part of the fire grate along with the movement of the fire grate.
The existing chain grate has no specific technological parameter requirements on repairing and adjusting the grate, so that the repairing of the grate cannot be effectively guided, and the repairing is usually carried out according to experience.
The existing chain grate repairing method is time-consuming and labor-consuming, complex in construction and high in difficulty coefficient. Such as: when the fire grate chain breaks, the chain plate and the chain pin need to be replaced. The chain pin on-site riveting mode needs a special riveting machine for riveting, after the boiler is installed, the grate is positioned in the boiler, the space is limited, the chain is in a stressed state during installation and cannot be stretched and turned over, the special riveting machine cannot be used for construction in the boiler at all, and the machine cannot enter the special riveting machine; if the whole fire grate needs to be disassembled for repairing one chain and two chains, the chains are dismantled outside for riveting construction, the workload is huge, the cost is high, and the cost is high. Therefore, the maintenance and the replacement of the chain plates and the chain pins are difficult to realize because the tools cannot be used due to the limitation of field space.
Disclosure of Invention
The invention provides a pin shaft assembly, a chain plate assembly, an assembly method of the chain plate assembly and a boiler grate, and aims to solve the technical problem that the repair of the grate of the chain grate is limited by the field space and is difficult to realize.
According to one aspect of the invention, the invention provides a pin shaft assembly for connecting and assembling chain plates of a boiler grate, which comprises a pin shaft, wherein the pin shaft comprises a pin head and a pin rod, the middle part of the pin rod is sleeved with a shaft sleeve, and the end part of the pin rod is fixedly sleeved with a baffle ring; a first gap for enabling the first large ring plate to be sleeved and assembled on the pin rod is reserved between the pin head and the shaft sleeve, the pin head and the shaft sleeve respectively form limit positions of the first large ring plate on two sides in the thickness direction, a second gap for enabling the second large ring plate to be sleeved and assembled on the pin rod is reserved between the shaft sleeve and the retaining ring, and the shaft sleeve and the retaining ring respectively form limit positions of the second large ring plate on two sides in the thickness direction; the outer surface of the shaft sleeve is provided with a first assembly position for sleeving and assembling the first small ring plate and a second assembly position for sleeving and assembling the second small ring plate, the first assembly position is arranged in the direction close to the pin head, and the second assembly position is arranged in the direction close to the retaining ring.
Furthermore, the baffle ring and the pin rod are fixedly connected by at least one of welding, non-return thread, interference fit and non-return buckle.
Further, the bushing is assembled to the pin shaft using at least one of a welded connection, an interference fit connection, or a spline fit connection.
Furthermore, the middle part of the pin rod is provided with an assembling part for assembling the shaft sleeve; the radial dimension of the fitting portion is greater than the radial dimension of the other portions of the pin shaft, or the radial dimension of the fitting portion is less than the radial dimension of the other portions of the pin shaft.
According to another aspect of the present invention, there is provided a method for assembling a chain plate assembly of a boiler grate, the method for assembling a chain plate assembly of a boiler grate using the pin assembly, comprising the steps of: the shaft sleeve is sequentially sleeved with a first small ring plate and a second small ring plate, and the pin rod is sequentially sleeved with a first large ring plate, the shaft sleeve, a second large ring plate and a baffle ring from the pin head to the end part of the pin rod; the free end of the first large ring plate and the free end of the second large ring plate are respectively assembled to corresponding positions of the upper group of pin shaft assemblies, and the free end of the first small ring plate and the free end of the second small ring plate are respectively assembled to corresponding positions of the next group of pin shaft assemblies; the first small ring plate and the second small ring plate in group and the first large ring plate and the second large ring plate in group are arranged at intervals and are connected with each other at the head through a pin shaft assembly to form an annular chain plate assembly.
Further, the first large ring plate is sleeved into the pin rod and abuts against the pin head so that the first large ring plate is in the first clearance position; the first small ring plate is sleeved and fixedly connected at the first end of the shaft sleeve, the second small ring plate is sleeved and fixedly connected at the second end of the shaft sleeve, and the first small ring plate and the second small ring plate are parallel and have the same orientation in the radial direction of the pin rod; sleeving and assembling the shaft sleeve on the pin rod; sleeving and assembling a second large annular plate on the pin rod and locating the second large annular plate at a second gap position; and fixedly assembling the baffle ring to the end part of the pin shaft.
Furthermore, at least one of the first large ring plate, the shaft sleeve or the second large ring plate is sleeved on the pin shaft in a clearance fit manner; or at least one of the first large ring plate, the shaft sleeve or the second large ring plate is heated to form a thermal expansion part, and the thermal expansion part is sleeved on the corresponding position of the pin rod and then cooled, so that the thermal expansion part is tightly tied on the pin rod to form interference fit connection.
Further, the first small ring plate and the second small ring plate are respectively assembled to corresponding positions on the shaft sleeve in a sleeved mode through clearance fit, or the first small ring plate and the second small ring plate are heated to become thermal expansion components, the thermal expansion components are sleeved at the corresponding positions on the shaft sleeve and then cooled, and therefore the thermal expansion components are tightly tightened on the shaft sleeve to form interference fit connection.
According to another aspect of the invention, a chain plate assembly is further provided, and the assembling method of the chain plate assembly is adopted, wherein the first large ring plate, the second large ring plate and the shaft sleeve are respectively in rotating connection with the pin rod, and the shaft sleeve is fixedly or rotatably connected with the first small ring plate and the second small ring plate; or the first large ring plate and the second large ring plate are respectively connected with the pin rod in a rotating way, the shaft sleeve is fixedly connected with the pin shaft, and the shaft sleeve is respectively connected with the first small ring plate and the second small ring plate in a fixed way or in a rotating way; or the first large ring plate, the second large ring plate and the shaft sleeve are respectively and fixedly connected with the pin rod, and the shaft sleeve is respectively and fixedly or rotatably connected with the first small ring plate and the second small ring plate; or the first large ring plate and the second large ring plate are respectively and fixedly connected with the pin rod, the shaft sleeve is rotatably connected with the pin rod, and the shaft sleeve is respectively and fixedly or rotatably connected with the first small ring plate and the second small ring plate.
According to another aspect of the invention, a boiler grate is also provided, comprising the above-described flight assembly.
The invention has the following beneficial effects:
according to the pin shaft assembly, the pin shaft is divided into a first gap and a second gap by the pin head, the shaft sleeve and the baffle ring, wherein the first gap and the second gap are respectively used for assembling the first large ring plate and the second large ring plate; the first large ring plate is assembled through the first gap, and meanwhile the pin head and the shaft sleeve are utilized to limit the first large ring plate along the thickness direction, so that the first large ring plate is prevented from moving along the thickness direction to generate friction loss with a peripheral structure; the second large ring plate is assembled through the second gap, and meanwhile the stop ring and the shaft sleeve are used for limiting the second large ring plate along the thickness direction, so that the second large ring plate is prevented from moving along the thickness direction to generate friction loss with a peripheral structure; thereby improving the service life of the assembled chain plate. The first large ring plate, the shaft sleeve and the second large ring plate are sequentially locked on the pin rod through the baffle ring, so that the overall structural stability is ensured, the assembly and the disassembly are simple, the chain plate can be easily disassembled and assembled by disassembling and assembling the baffle ring without using too many auxiliary tools, the corresponding requirement on the disassembling and assembling space is small, and only a gap is needed for tools to pass through; and the baffle ring is a tiny part, so that the cost is low to negligible, and the repair cost can not be increased even if the baffle ring is violently damaged to realize the disassembly of the pin shaft assembly and the disassembly of the chain plate. First ringlet board corresponds the assembly to the axle sleeve with the second ringlet board respectively from the both ends of axle sleeve on, then wholly follow the axle sleeve assembly to the pin rod on, the assembly and dismantle and change simply need not to accomplish with the help of the instrument or with the help of a small amount of instruments. The whole pin shaft assembly is simple in structure and easy and convenient to assemble and disassemble; can unload through the dismouting and keep off the ring in order to realize whole dismouting, dismantle can realize dismantling or also can utilize the tilting pin head in order to realize breaking away from of pin pole and fender ring through direct action on keeping off the ring, required operating space demand is little. The difficulty of disassembling, assembling and maintaining the whole chain plate can be reduced, and the quick disassembling, assembling and maintaining of the chain plate can be realized.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a pin assembly according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a link plate assembly according to a preferred embodiment of the present invention.
Illustration of the drawings:
1. a pin head; 2. a pin rod; 3. a shaft sleeve; 4. a baffle ring; 5. a first gap; 6. a second gap; 7. a first assembly position; 8. a second assembly position; 9. a first large ring plate; 10. a second large ring plate; 11. a first small ring plate; 12. a second small ring plate.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic structural view of a pin assembly according to a preferred embodiment of the present invention; fig. 2 is a schematic structural view of a link plate assembly according to a preferred embodiment of the present invention.
As shown in fig. 1, the pin shaft assembly of the embodiment is used for connecting and assembling chain plates of a boiler grate and comprises a pin shaft, wherein the pin shaft comprises a pin head 1 and a pin rod 2, a shaft sleeve 3 is sleeved in the middle of the pin rod 2, and a baffle ring 4 is fixedly sleeved at the end part of the pin rod 2; a first gap 5 used for enabling a first large ring plate 9 to be assembled on the pin rod 2 in a sleeved mode is reserved between the pin head 1 and the shaft sleeve 3, the pin head 1 and the shaft sleeve 3 respectively form limiting positions of two sides of the first large ring plate 9 in the thickness direction, a second gap 6 used for enabling a second large ring plate 10 to be assembled on the pin rod 2 in a sleeved mode is reserved between the shaft sleeve 3 and the baffle ring 4, and the shaft sleeve 3 and the baffle ring 4 respectively form limiting positions of two sides of the second large ring plate 10 in the thickness direction; the outer surface of the shaft sleeve 3 is provided with a first assembly position 7 for sleeving and assembling a first small ring plate 11 and a second assembly position 8 for sleeving and assembling a second small ring plate 12, the first assembly position 7 is arranged in the direction close to the pin head 1, and the second assembly position 8 is arranged in the direction close to the baffle ring 4. According to the pin shaft assembly, a pin shaft is divided into a first gap 5 and a second gap 6 by using a pin head 1, a shaft sleeve 3 and a baffle ring 4, wherein the first gap 5 and the second gap 6 are respectively used for assembling a first large ring plate 9 and a second large ring plate 10; the first large ring plate 9 is assembled through the first gap 5, and meanwhile, the pin head 1 and the shaft sleeve 3 are used for limiting the first large ring plate 9 along the thickness direction, so that the first large ring plate 9 is prevented from moving along the thickness direction to generate friction loss with a peripheral structure; the second large ring plate 10 is assembled through the second gap 6, and meanwhile the stop ring 4 and the shaft sleeve 3 are used for limiting the second large ring plate 10 along the thickness direction, so that the second large ring plate 10 is prevented from moving along the thickness direction to generate friction loss with a peripheral structure; thereby improving the service life of the assembled chain plate. The first large ring plate 9, the shaft sleeve 3 and the second large ring plate 10 are sequentially locked on the pin rod 2 through the baffle ring 4, so that the structural stability of the whole is ensured, the assembly and the disassembly are simple, the chain plate can be easily disassembled and assembled through disassembling and assembling the baffle ring 4, excessive auxiliary tools are not needed, the corresponding requirement on the disassembling and assembling space is small, and only a gap is needed for tools to pass through; and the baffle ring 4 is a tiny part, so that the cost is low to negligible, and the repair cost can not be increased even if the baffle ring 4 is violently damaged to realize the disassembly of the pin shaft assembly and the disassembly of the chain plate. First ringlet 11 corresponds from the both ends of axle sleeve 3 respectively with second ringlet 12 and assembles to axle sleeve 3 on, then wholly follow axle sleeve 3 and assemble to pin pole 2, the assembly and dismantle the change simply, need not to accomplish with the help of the instrument or with the help of a small amount of instruments. The whole pin shaft assembly is simple in structure and easy and convenient to assemble and disassemble; can keep off ring 4 through tearing open loading and unloading in order to realize whole dismouting, dismantle can realize dismantling or also can utilize the waning to move round pin head 1 in order to realize breaking away from of pin pole 2 and fender ring 4 through direct action on keeping off ring 4, required operating space demand is little. The difficulty of disassembling, assembling and maintaining the whole chain plate can be reduced, and the quick disassembling, assembling and maintaining of the chain plate can be realized. Optionally, the pin head 1 is provided with a force application structure for a tool to extend into the pin head to form a force application point to force the pin rod 2 to be separated from the baffle ring 4. Optionally, the force application structure is a threaded hole formed in the end face of the pin head 1, the force application equipment is screwed into the threaded hole of the force application structure and supported around the pin shaft assembly, and the pin shaft assembly is detached in a pulling mode; during assembly, the bottom of the baffle ring 4 is provided with a support, and the pin rod 2 is forced into the baffle ring 4 by pressing the end face of the pin head 1. Alternatively, the force application device is configured as a pin hole formed on the pin head 1 in the radial direction of the pin head 1, and the force application device applies force to the pin head by penetrating through the pin hole.
In this embodiment, the stop ring 4 and the pin rod 2 are fixedly connected by at least one of welding, non-return thread, interference fit, and non-return buckle. Optionally, the outer edge of the end of the pin rod 2 is provided with a bevel opening, the baffle ring 4 is tightly clamped and assembled to the end of the pin rod 2, the baffle ring 4 and the bevel opening of the pin rod 2 form a bevel opening cavity, and solder is fully filled into the bevel opening cavity in a welding mode to realize stable connection of the baffle ring 4 on the pin rod 2. Optionally, the baffle ring 4 is connected with the pin rod 2 by a screw thread, a non-return groove is formed in the baffle ring 4 and/or the pin rod 2, or the screw thread of the baffle ring 4 and/or the pin rod 2 is partially broken and tilted to form a non-return fin, or a non-return washer or a non-return gasket is arranged between the baffle ring 4 and the pin rod 2. Optionally, the baffle ring 4 and the pin rod 2 are connected in a matched manner by adopting a dovetail groove and a dovetail slide bar, or in a sliding fit manner by adopting a male groove and a female groove. Can select to keep off the relation of connection of difference between ring 4 and the pin rod 2 according to link joint actual structure size and all ring edge border circumstances to reduce assembly operation space demand, with quick assembly and the quick dismantlement between realization fender ring 4 and the pin rod 2, thereby improve the maintenance efficiency of link joint.
In this embodiment, the sleeve 3 is fitted to the pin rod 2 by at least one of welding, interference fit, and spline fit. Different assembling modes can be selected according to requirements to realize the movable connection or the fixed connection between the shaft sleeve 3 and the pin rod 2, so that pin shaft assemblies with different movable fit relations are formed, different structural requirements are met, and the application range is enlarged. Optionally, an assembly groove is formed in the pin rod 2 at an assembly position corresponding to the shaft sleeve 3, the shaft sleeve 3 is heated integrally and sleeved on the pin rod 2, when the shaft sleeve 3 is located in the assembly groove, the shaft sleeve 3 is movably sleeved in the assembly groove by cooling, and meanwhile, the movement of the shaft sleeve 3 along the axial direction is limited by using the groove walls on the two sides of the assembly groove.
In the embodiment, the middle part of the pin rod 2 is provided with an assembling part for assembling the shaft sleeve 3; the radial dimension of the fitting is greater than the radial dimension of the rest of the pin 2, or the radial dimension of the fitting is smaller than the radial dimension of the rest of the pin 2. So that the pin rod 2 can be rapidly assembled on the pin rod 2, and simultaneously the assembling positions of the first large ring plate 9 and the second large ring plate 10 are determined, so that the chain plate can be rapidly assembled.
As shown in fig. 2, the method for assembling a chain plate assembly of a boiler grate according to the present embodiment, which is used for assembling the chain plate assembly of the boiler grate, includes the following steps: a first small ring plate 11 and a second small ring plate 12 are sequentially sleeved on the shaft sleeve 3, and a first large ring plate 9, the shaft sleeve 3, a second large ring plate 10 and a baffle ring 4 are sequentially sleeved on the pin rod 2 from the pin head 1 to the end part of the pin rod 2; the free end of the first large ring plate 9 and the free end of the second large ring plate 10 are respectively assembled to corresponding positions of an upper group of pin shaft assemblies, and the free end of the first small ring plate 11 and the free end of the second small ring plate 12 are respectively assembled to corresponding positions of a next group of pin shaft assemblies; the first small ring plates 11 and the second small ring plates 12 in groups and the first large ring plates 9 and the second large ring plates 10 in groups are arranged at intervals and are connected in an initial position through pin shaft assemblies to form an annular chain plate assembly. The invention relates to an assembly method of a chain plate assembly, wherein a first large ring plate 9, a first small ring plate 11, a second small ring plate 12 and a second large ring plate 10 are sequentially connected in series through a pin shaft assembly, the first large ring plate 9 and the second large ring plate 10 are positioned at two ends of the pin shaft assembly and positioned on a pin rod 2, and the first small ring plate 11 and the second small ring plate 12 are positioned in the middle of the pin shaft assembly and positioned on a shaft sleeve 3 of the pin shaft assembly. Two adjacent groups of pin shaft assemblies are alternately connected through a first large ring plate 9 and a second large ring plate 10 which are in parallel grouping or a first small ring plate 11 and a second small ring plate 12 which are in parallel grouping. Namely, the first group of pin shaft assemblies are connected with the second group of pin shaft assemblies through a first large ring plate 9 and a second large ring plate 10, the second group of pin shaft assemblies are connected with the third group of pin shaft assemblies through a first small ring plate 11 and a second small ring plate 12, the third group of pin shaft assemblies are connected with the fourth group of pin shaft assemblies through a first large ring plate 9 and a second large ring plate 10, the fourth group of pin shaft assemblies are connected with the fifth group of pin shaft assemblies through a first small ring plate 11 and a second small ring plate 12, and so on until the last group of pin shaft assemblies are connected with the first group of pin shaft assemblies through a first small ring plate 11 and a second small ring plate 12. The first large ring plate 9, the shaft sleeve 3 and the second large ring plate 10 sequentially pass through a pin shaft assembly; two ends of the shaft sleeve 3 respectively penetrate through the first small ring plate 11 and the second small ring plate 12, and then the baffle ring 4 is fixedly connected to the end part of the pin rod 2, so that the assembly of a group of pin shaft assemblies is completed, and the whole assembly is simple and easy to operate; the same disassembly is simple, and the first large ring plate 9, the shaft sleeve 3, the second large ring plate 10 and the first small ring plate 11 can be easily separated from the second small ring plate 12 by taking the baffle ring 4 out of the end part of the pin rod 2, so that the repair, the replacement and the maintenance are convenient. The difficulty of disassembling, assembling and maintaining the whole chain plate can be reduced, and the quick disassembling, assembling and maintaining of the chain plate can be realized. Even if the distribution shaft assembly is violently damaged at the part, the cost is almost ignored, the cost for repairing and maintaining the whole chain plate cannot be influenced, and convenience conditions are provided for timely repairing, replacing and maintaining the chain plate.
In the present embodiment, as shown in fig. 2, the first large ring plate 9 is sleeved into the pin rod 2 and abuts against the pin head 1, so that the first large ring plate 9 is located at the first gap 5; the first small ring plate 11 is fixedly sleeved at the first end of the shaft sleeve 3, the second small ring plate 12 is fixedly sleeved at the second end of the shaft sleeve 3, and the first small ring plate 11 and the second small ring plate 12 are parallel and have the same orientation along the radial direction of the pin rod 2; the shaft sleeve 3 is sleeved and assembled on the pin rod 2; a second large ring plate 10 is sleeved on the pin rod 2 and is positioned at the position of the second gap 6; and fixedly assembling the baffle ring 4 to the end part of the pin shaft. The first large ring plates 9 and the second large ring plates 10 which are arranged in groups and the first small ring plates 11 and the second small ring plates 12 which are arranged in groups are separated from each other by arranging the shaft sleeves 3 on the pin rods 2, so that the freedom degree of the hinge rotation of the whole chain plate is ensured, and the mutual interference and obstruction among the chain plates are reduced; and at the same time, the position limitation of the chain plates in the thickness direction is formed, so that the chain plates can not be in friction contact with each other in the operation process, and the service life of the whole is prolonged.
As shown in fig. 2, in this embodiment, at least one of the first large ring plate 9, the shaft sleeve 3, or the second large ring plate 10 is sleeved on the pin shaft by clearance fit; or at least one of the first large ring plate 9, the shaft sleeve 3 or the second large ring plate 10 is heated to form a thermal expansion part, and the thermal expansion part is sleeved on the corresponding position of the pin rod 2 and then cooled, so that the thermal expansion part is tightened on the pin rod 2 to form an interference fit connection. The hinged rotation of the chain plate can be realized by fixedly connecting a first large ring plate 9 and a second large ring plate 10 on the pin rod 2 and rotationally connecting the shaft sleeve 3 with the pin rod 2; the first large ring plate 9 and the second large ring plate 10 can be rotationally connected to the pin rod 2, and the shaft sleeve 3 is rotationally connected with the pin rod 2; the first large ring plate 9 and the second large ring plate 10 can be rotatably connected to the pin rod 2, and the shaft sleeve 3 is fixedly connected with the pin rod 2. Different hinge rotation modes can be selected according to requirements, so that the chain plate can be conveniently disassembled, assembled and maintained, and the cost is reduced; meanwhile, different selection modes are provided for different operation space environments, so that the disassembly, assembly and maintenance of the chain plate are realized.
As shown in fig. 2, in the present embodiment, the first small ring plate 11 and the second small ring plate 12 are respectively assembled to corresponding positions on the shaft sleeve 3 by clearance fit in a sleeved manner, or the first small ring plate 11 and the second small ring plate 12 are heated to become thermal expansion members, and the thermal expansion members are cooled after being sleeved on the corresponding positions on the shaft sleeve 3, so that the thermal expansion members are tightened on the shaft sleeve 3 to form interference fit connection. The connection relation between the first small ring plate 11 and the shaft sleeve 3 and the connection relation between the second small ring plate 12 and the shaft sleeve 3 are selected according to actual needs, and the position relation between the first small ring plate 11 and the shaft sleeve 3 along the thickness direction is kept stable, so that the first small ring plate 11 and the second small ring plate 12 cannot rotate and interfere with each other in the normal hinged rotation process of the chain plate, and meanwhile, the friction damage between the first small ring plate 11 and the second small ring plate 12 is avoided, and the service life of the structure is prolonged.
As shown in fig. 2, in the link plate assembly of the present embodiment, by using the above-mentioned method for assembling the link plate assembly, the first large ring plate 9, the second large ring plate 10 and the shaft sleeve 3 are respectively rotatably connected with the pin rod 2, and the shaft sleeve 3 is fixedly or rotatably connected with the first small ring plate 11 and the second small ring plate 12; or the first large ring plate 9 and the second large ring plate 10 are respectively and rotatably connected with the pin rod 2, the shaft sleeve 3 is fixedly connected with the pin shaft, and the shaft sleeve 3 is respectively and fixedly or rotatably connected with the first small ring plate 11 and the second small ring plate 12; or the first large ring plate 9, the second large ring plate 10 and the shaft sleeve 3 are respectively and fixedly connected with the pin rod 2, and the shaft sleeve 3 is respectively and fixedly or rotatably connected with the first small ring plate 11 and the second small ring plate 12; or the first large ring plate 9 and the second large ring plate 10 are respectively and fixedly connected with the pin rod 2, the shaft sleeve 3 is rotatably connected with the pin rod 2, and the shaft sleeve 3 is respectively and fixedly or rotatably connected with the first small ring plate 11 and the second small ring plate 12. Different hinge rotation modes can be selected according to requirements, so that the chain plate can be conveniently disassembled, assembled and maintained, and the cost is reduced; meanwhile, different selection modes are provided for different operation space environments, so that the disassembly, assembly and maintenance of the chain plate are realized. The chain plate assembly is simple in structure, a four-layer structure is formed along the axial direction of the pin shaft assembly, and two ends of a group of assemblies formed by the first large ring plate 9 and the second large ring plate 10 are respectively connected with the group of pin shaft assemblies; the first small ring plate 11 and the second small ring plate 12 form a group of components, and two ends of each component are respectively connected with a group of pin shaft components. The group of large ring plates and the group of small ring plates are connected end to end through the pin shaft assemblies and are alternately arranged, so that a complete ring-shaped chain plate is formed, the stability of the whole structure is high, the whole structure can be easily disassembled, assembled and maintained through the specially-made pin shaft assembly, the disassembly, the replacement and the maintenance are convenient, and the cost is low.
The boiler grate of the embodiment comprises the chain plate assembly.
In implementation, the repairing method of the chain plate assembly is provided: the method comprises the steps of measuring the sizes of chain plates (a large ring plate, a first large ring plate 9, a second large ring plate 10 and a small ring plate, a first small ring plate 11 and a second small ring plate 12), processing the chain plates, replacing broken chain plates with new chain plates, connecting the chain plates with each other by a self-made pin shaft assembly, leading a baffle ring 4 at one end of a pin shaft, and installing a self-made shaft sleeve 3 between the two chain plates in order to ensure the gap between the large ring plate and the small ring plate and ensure the flexible rotation, wherein the other end of the pin shaft is welded and fixed with the pin shaft by the self-made baffle ring 4.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pin shaft component is used for the connection and assembly of chain plates of a boiler grate and comprises a pin shaft,
it is characterized in that the preparation method is characterized in that,
the pin shaft comprises a pin head (1) and a pin rod (2), a shaft sleeve (3) is sleeved in the middle of the pin rod (2), and a baffle ring (4) is fixedly sleeved at the end part of the pin rod (2);
a first gap (5) used for enabling a first large ring plate (9) to be sleeved and assembled on the pin rod (2) is reserved between the pin head (1) and the shaft sleeve (3), the pin head (1) and the shaft sleeve (3) respectively form limiting positions of two sides of the first large ring plate (9) along the thickness direction,
a second gap (6) used for enabling a second large ring plate (10) to be sleeved and assembled on the pin rod (2) is reserved between the shaft sleeve (3) and the baffle ring (4), and the shaft sleeve (3) and the baffle ring (4) respectively form limiting positions of two sides of the second large ring plate (10) in the thickness direction;
the outer surface of the shaft sleeve (3) is provided with a first assembling position (7) for sleeving and assembling a first small ring plate (11) and a second assembling position (8) for sleeving and assembling a second small ring plate (12), the first assembling position (7) is arranged in a direction close to the pin head (1), and the second assembling position (8) is arranged in a direction close to the baffle ring (4);
the pin head (1) is provided with a force application structure which is used for enabling a tool to extend into the pin head so as to form a force application point to force the pin rod (2) to be separated from the baffle ring (4);
the force application structure is a threaded hole formed in the end face of the pin head (1), the force application equipment is screwed into the threaded hole of the force application structure and supported around the pin shaft assembly, and the pin shaft assembly is detached in a drawing mode; or the force application structure is a pin hole formed on the pin head (1) along the radial direction of the pin head (1), and the force application equipment is penetrated in the pin hole to apply force to the pin head part;
the bottom of the retaining ring (4) is provided with a support, and the pin rod (2) is forced into the retaining ring (4) of the bottom support by applying pressure to the end surface of the pin head (1) so as to realize assembly.
2. The pin assembly of claim 1,
the baffle ring (4) and the pin rod (2) are fixedly connected by at least one of welding, non-return thread, interference fit and non-return buckle connection.
3. The pin assembly of claim 1,
the shaft sleeve (3) is assembled on the pin rod (2) by adopting at least one of welding connection, interference fit connection or spline fit connection.
4. The pin assembly of claim 1,
the middle part of the pin rod (2) is provided with an assembling part for assembling the shaft sleeve (3);
the radial dimension of the assembly part is larger than that of other parts of the pin rod (2), or
The radial dimension of the assembling part is smaller than that of other parts of the pin rod (2).
5. A method for assembling a chain plate component of a boiler grate by using the pin shaft component of any one of claims 1 to 4,
the method is characterized by comprising the following steps:
a first small ring plate (11) and a second small ring plate (12) are sequentially sleeved on the shaft sleeve (3), and a first large ring plate (9), the shaft sleeve (3), a second large ring plate (10) and a baffle ring (4) are sequentially sleeved on the pin rod (2) from the pin head (1) to the end part of the pin rod (2);
the free end of the first large ring plate (9) and the free end of the second large ring plate (10) are respectively assembled to corresponding positions of the upper group of pin shaft assemblies, and the free end of the first small ring plate (11) and the free end of the second small ring plate (12) are respectively assembled to corresponding positions of the next group of pin shaft assemblies;
the grouped first small ring plates (11) and the second small ring plates (12) and the grouped first large ring plates (9) and the grouped second large ring plates (10) are arranged at intervals and are connected in an initial position through pin shaft assemblies to form an annular chain plate assembly.
6. The method of assembling a link plate assembly according to claim 5,
the first large ring plate (9) is sleeved in the pin rod (2) and is attached to the pin head (1) in a leaning manner, so that the first large ring plate (9) is positioned in the first gap (5);
the first small ring plate (11) is fixedly sleeved at the first end of the shaft sleeve (3), the second small ring plate (12) is fixedly sleeved at the second end of the shaft sleeve (3), and the first small ring plate (11) and the second small ring plate (12) are parallel and have the same orientation in the radial direction of the pin rod (2);
the shaft sleeve (3) is sleeved and assembled on the pin rod (2); a second large ring plate (10) is sleeved on the pin rod (2) and is positioned at the position of a second gap (6); and fixedly assembling the baffle ring (4) to the end part of the pin shaft.
7. The method of assembling a link plate assembly according to claim 5,
at least one of the first large ring plate (9), the shaft sleeve (3) or the second large ring plate (10) is sleeved on the pin shaft in a clearance fit manner; or
At least one of the first large ring plate (9), the shaft sleeve (3) or the second large ring plate (10) is heated to form a thermal expansion part, and the thermal expansion part is sleeved on the corresponding position of the pin rod (2) and then cooled, so that the thermal expansion part is tightened on the pin rod (2) to form interference fit connection.
8. The method of assembling a link plate assembly according to claim 5,
the first small ring plate (11) and the second small ring plate (12) are respectively sleeved and assembled at corresponding positions on the shaft sleeve (3) through clearance fit, or
The first small ring plate (11) and the second small ring plate (12) are heated to become a thermal expansion component, and the thermal expansion component is sleeved at a corresponding position on the shaft sleeve (3) and then cooled, so that the thermal expansion component is tightly tightened on the shaft sleeve (3) to form interference fit connection.
9. A link plate assembly to which the assembling method of a link plate assembly according to any one of claims 5 to 8 is applied,
the first large ring plate (9), the second large ring plate (10) and the shaft sleeve (3) are respectively in rotating connection with the pin rod (2), and the shaft sleeve (3) is fixedly or rotationally connected with the first small ring plate (11) and the second small ring plate (12); or
The first large ring plate (9) and the second large ring plate (10) are respectively in rotating connection with the pin rod (2), the shaft sleeve (3) is fixedly connected with the pin shaft, and the shaft sleeve (3) is respectively in fixed connection or rotating connection with the first small ring plate (11) and the second small ring plate (12); or
The first large ring plate (9), the second large ring plate (10) and the shaft sleeve (3) are fixedly connected with the pin rod (2) respectively, and the shaft sleeve (3) is fixedly or rotationally connected with the first small ring plate (11) and the second small ring plate (12) respectively; or
The first large ring plate (9) and the second large ring plate (10) are fixedly connected with the pin rod (2) respectively, the shaft sleeve (3) is rotatably connected with the pin rod (2), and the shaft sleeve (3) is fixedly connected or rotatably connected with the first small ring plate (11) and the second small ring plate (12) respectively.
10. A boiler grate comprising the flight assembly of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494061.2A CN109489055B (en) | 2018-12-07 | 2018-12-07 | Pin shaft assembly, chain plate assembly, assembling method of chain plate assembly and boiler grate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494061.2A CN109489055B (en) | 2018-12-07 | 2018-12-07 | Pin shaft assembly, chain plate assembly, assembling method of chain plate assembly and boiler grate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109489055A CN109489055A (en) | 2019-03-19 |
| CN109489055B true CN109489055B (en) | 2020-05-15 |
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ID=65698442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811494061.2A Active CN109489055B (en) | 2018-12-07 | 2018-12-07 | Pin shaft assembly, chain plate assembly, assembling method of chain plate assembly and boiler grate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109489055B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4026410A (en) * | 1974-11-19 | 1977-05-31 | Polysius Ag | Travelling grate chain |
| CN2663733Y (en) * | 2003-11-28 | 2004-12-15 | 韩德玮 | Chain |
| EP1645528A1 (en) * | 2004-10-05 | 2006-04-12 | Tsubakimoto Chain Co. | Conveyor chain |
| CN2773554Y (en) * | 2004-09-21 | 2006-04-19 | 田苗 | Constant-pressure hot-water boiler of grate with honeycomb section coal chain |
| CN203667397U (en) * | 2013-11-18 | 2014-06-25 | 马鞍山马钢表面工程技术有限公司 | Sintering belt cooling machine chain |
| CN104235266A (en) * | 2013-06-21 | 2014-12-24 | 南京化工职业技术学院 | Bush roller chain model convenient to demount, mount and close |
-
2018
- 2018-12-07 CN CN201811494061.2A patent/CN109489055B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4026410A (en) * | 1974-11-19 | 1977-05-31 | Polysius Ag | Travelling grate chain |
| CN2663733Y (en) * | 2003-11-28 | 2004-12-15 | 韩德玮 | Chain |
| CN2773554Y (en) * | 2004-09-21 | 2006-04-19 | 田苗 | Constant-pressure hot-water boiler of grate with honeycomb section coal chain |
| EP1645528A1 (en) * | 2004-10-05 | 2006-04-12 | Tsubakimoto Chain Co. | Conveyor chain |
| CN104235266A (en) * | 2013-06-21 | 2014-12-24 | 南京化工职业技术学院 | Bush roller chain model convenient to demount, mount and close |
| CN203667397U (en) * | 2013-11-18 | 2014-06-25 | 马鞍山马钢表面工程技术有限公司 | Sintering belt cooling machine chain |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109489055A (en) | 2019-03-19 |
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