CN114483794A - Combined retainer for main bearing of heading machine and assembling method thereof - Google Patents
Combined retainer for main bearing of heading machine and assembling method thereof Download PDFInfo
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- CN114483794A CN114483794A CN202210087425.5A CN202210087425A CN114483794A CN 114483794 A CN114483794 A CN 114483794A CN 202210087425 A CN202210087425 A CN 202210087425A CN 114483794 A CN114483794 A CN 114483794A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 12
- 238000010791 quenching Methods 0.000 claims abstract description 4
- 230000000171 quenching effect Effects 0.000 claims abstract description 4
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 16
- 230000005641 tunneling Effects 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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Classifications
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
- F16C33/485—Cages for rollers or needles for multiple rows of rollers or needles with two or more juxtaposed cages joined together or interacting with each other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/50—Other types of ball or roller bearings
- F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
- F16C33/502—Cages for rollers or needles formed of interconnected members, e.g. chains formed of arcuate segments retaining one or more rollers or needles
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/56—Selection of substances
Abstract
The invention provides a combined retainer for a main bearing of a heading machine and an assembling method thereof. Wherein the material of pocket hole piece and clamp splice is the steel to promote the bearing capacity of this combination holder, and the material of joint table is copper, sets up flange face and raceway surface on the joint table, has promoted the wear-resisting ability of combination holder. Pocket hole piece and clamp splice carry out quenching before processing and strengthen its hardness, independently process in the mould and improve its manufacturing accuracy, pocket hole piece, first clamp splice, second clamp splice and connect between the platform detachable connection, then use to splice to fill the gap and carry out bonding locking processing. Therefore, the combined retainer has the advantages of being high in strength, accuracy and stability and the like, the reliability and safety of the main bearing of the heading machine are improved, and the service life of the heading machine is prolonged.
Description
Technical Field
The invention relates to the field of main bearings of heading machines, in particular to a combined retainer for the main bearings of heading machines and an assembling method thereof.
Background
The heading machine is an engineering machine for tunneling, integrates mechanical, electrical, hydraulic, sensing, information technology and other systems, can perform tunneling work on long-distance, high-depth and large-diameter tunnels, can adapt to severe working environments, and has high automation and intelligence degrees. With the rapid development of national economy, many central cities are continuously expanding outwards and perfecting underground traffic systems, and meanwhile, some emerging cities are developing underground spaces to build subway tunnels, so the demand of development machines is continuously increasing.
When the heading machine is used for tunneling, the main bearing plays an important role, and not only needs to bear extremely large axial force, radial force and overturning moment, but also needs to transmit the rotary moment required by the rotation of the cutter head. The main bearing of the heading machine mainly comprises an outer ring, two inner rings, three rows of rolling bodies and a retainer, wherein the retainer of the main bearing is used as a key part of the main bearing, and the main bearing has the main function of keeping proper intervals among the rolling bodies. In addition, in the main bearing of the heading machine, the retainer is in contact with the rolling body and the guide flanges of the inner and outer rings, and the operation condition of the retainer is also important for the operation performance of the main bearing.
At present, an all-copper retainer and a steel welding copper retainer are mainly used in a main bearing of the heading machine, and compared with a retainer using an all-copper structure, the steel welding copper retainer is lower in production and manufacturing cost, so that the steel welding copper retainer is more preferably selected to be used at present in order to save the manufacturing cost of a main bearing. The supporting legs and the guide blocks of the steel welding copper retainer are welded with the retainer body, and although the welding method is good in integrity, simple in process and strong in adaptability, workpieces are prone to deformation caused by residual stress, welding quality is affected by operators, special detection is needed after welding is completed, and disassembly is difficult. Meanwhile, when a pocket of the steel welding copper cage is machined at present, the depth of the pocket is large, so that the pocket is difficult to be used in the aspects of verticality and roughness.
Therefore, how to avoid the deformation influence caused by welding, save the manufacturing cost caused by the detection steps, make the combined retainer convenient to disassemble and remanufacture, and realize high-precision processing of the pockets is a problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to avoid deformation influence caused by welding, save manufacturing cost caused by weld detection, realize high-precision processing of a pocket, facilitate the disassembly and remanufacture of a combined retainer, improve the reliability and safety of a main bearing of a heading machine and prolong the service life of the heading machine, and provides the combined retainer for the main bearing of the heading machine and an assembling method thereof for realizing the aim, wherein the specific technical scheme is as follows:
a combined retainer for a main bearing of a tunneling machine is a main bearing retainer comprising pocket blocks, first clamping blocks, second clamping blocks and a connecting table, wherein two ends of each pocket block are detachably connected with the first clamping blocks and the second clamping blocks respectively, and the connecting table is detachably connected with the first clamping blocks and the second clamping blocks respectively; the pocket hole block is provided with a pocket hole, and the connecting platform is provided with a raceway surface and a flange surface.
Preferably, the detachable connection is a bolt connection.
Preferably, the first clamp splice with set up on the second clamp splice and be used for the first equipment hole of being connected with the connection platform and be used for the first connecting hole of being connected with the pocket piece, connect the bench and set up the second equipment hole that matches with first equipment hole, set up the second connecting hole that matches with first connecting hole on the pocket piece.
Preferably, the first connecting holes on the first clamping block are equidistantly arranged on the first clamping block and correspond to the first connecting holes on the second clamping block.
Preferably, the first clamping block and the second clamping block are provided with steps which can be clamped with the pocket block; the connecting table is provided with steps which can be clamped with the first clamping block and the second clamping block.
Preferably, the first clamping block, the second clamping block and the pocket block are all made of steel; the connecting platform is made of copper.
Preferably, the detachable connection further comprises a glue joint, and an adhesive is arranged in the gap of the combined retainer.
Further, the invention also provides an assembling method of the combined retainer for assembling, which comprises the following specific steps:
step one, quenching and processing the pocket block, the first clamping block and the second clamping block;
secondly, clamping the pocket block with the first clamping block, adjusting the position of the pocket block to align a second connecting hole on the pocket block with a first connecting hole of the first clamping block, pre-tightening by using a bolt, and repeating the steps to pre-tighten the pocket block until the first connecting hole on the first clamping block is used up;
thirdly, clamping the second clamping block with the pocket block, adjusting the position of the pocket block to align the first connecting hole of the second clamping block with the corresponding second connecting hole on the pocket block, pre-tightening by using a bolt, and repeating the steps to pre-tighten the second clamping block until the first connecting hole on the second clamping block is used up;
and fourthly, clamping the connecting table with the first clamping block and the second clamping block, adjusting the position of the connecting table to align the first assembling hole and the second assembling hole, performing pre-tightening connection by using bolts, fastening the bolts in a staggered manner after all pre-tightening connections are completed, performing bonding anti-loosening treatment on the joints of the bolts by using glue joint, and filling adhesive into the joints to complete the assembling of the combined retainer.
In addition, the invention also provides a method for disassembling the combined retainer, which comprises the following specific steps:
firstly, heating and softening an adhesive at the joint of the bolt;
secondly, disassembling the bolt;
thirdly, heating and softening the adhesive at the gap;
and fourthly, decomposing the pocket hole block, the first clamping block, the second clamping block and the connecting table, and cleaning the adhesive on the surface to finish the disassembly of the combined retainer.
The technical scheme of the invention has the following beneficial effects:
1. the hole pocket block, the first clamping block and the second clamping block are made of steel materials, quenching treatment is carried out before processing, the strength, the rigidity, the wear resistance, the fatigue strength and the toughness of the hole pocket block are greatly improved, and the strength of the retainer and the bearing capacity of the main bearing are also improved accordingly.
2. The pocket hole block, the first clamping block and the second clamping block are independently processed before being assembled, the processing difficulty of the retainer is reduced, the processing precision and the processing efficiency of the pocket hole in the pocket hole block are improved, and abrasion of the pocket hole and the roller is reduced when the main bearing operates.
3. The connecting platform is made of copper materials, and the connecting platform is in direct contact with the inner ferrule and the outer ferrule, so that the abrasion of the inner ferrule and the outer ferrule can be reduced.
4. And the bolt connection is adopted and the adhesive is used for bonding and anti-loosening treatment, so that the deformation influence caused by the heating process is avoided.
5. The adhesive is used for carrying out adhesive bonding treatment on the connecting gap, so that the stress at the contact part is uniformly distributed, and the capability of the combined retainer for resisting impact load can be improved to a certain extent.
6. The combined retainer can be disassembled, so that damaged parts can be replaced in time, and the main bearing is convenient to maintain and remanufacture.
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 diagram of a main bearing of the heading machine;
FIG. 2 is a main push cage connection view (top view);
FIG. 3 is a schematic view of a main push pocket block structure;
FIG. 4 is a schematic view of a main push inner clamp block structure;
FIG. 5 is a schematic view of a main push out clamp block structure;
FIG. 6 is a schematic structural view of a main push connecting platform;
FIG. 7 is a radial cage attachment view (top view);
FIG. 8 is a schematic view of a radial pocket block configuration;
FIG. 9 is a schematic view of a radial clamping block configuration;
FIG. 10 is a schematic view of a radial land structure.
Wherein, 1-main push retainer, 11-main push pocket block, 111-main push pocket block outer joint hole, 112-main push pocket block outer joint face, 113-main push pocket block inner wall face, 114-main push pocket block inner joint hole, 115-main push pocket block inner joint face, 12-main push inner clamp block, 121-main push inner clamp block assembly hole, 122-main push inner clamp block joint hole, 123-main push inner clamp block joint face, 13-main push outer clamp block, 131-main push outer clamp block joint hole, 132-main push outer clamp block assembly hole, 133-main push outer clamp block joint face, 14-main push connecting table, 141-main push connecting table edge face, 142-main push connecting table outer assembly hole, 143-main push connecting table raceway joint face, 144-main push connecting table inner assembly hole, 2-radial retainer, 21-radial pocket block, 211-radial joint hole block lower joint hole, 212-radial pocket block lower joint hole, 213-an upper binding face of a radial pocket hole block, 214-an upper connecting hole of the radial pocket hole block, 215-an inner wall face of the radial pocket hole block, 22-a radial clamping block, 221-a connecting hole of the radial clamping block, 222-an assembling hole of the radial clamping block, 223-a binding face of the radial clamping block, 23-a radial connecting table, 231-a lower assembling hole of the radial connecting table, 232-an upper assembling hole of the radial connecting table, 233-a raceway binding face of the radial connecting table and 3-an auxiliary pushing retainer.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
The main bearing of the heading machine mainly comprises three ferrules, three rows of rollers and three rows of retainers, wherein the diameter surface of each ferrule, which is in contact with the rollers, is a raceway surface, and the diameter surface of each retainer, which guides the movement of each retainer, is a flange surface. When the main bearing of the tunneling machine normally works, the raceway surface and the flange surface of the retainer generate certain friction, and particularly under the condition of impact load, the abrasion of the raceway surface and the flange surface is aggravated, so that metal on the surface of a ferrule peels off and fails early, and the service life of the main bearing of the tunneling machine is shortened.
Although a steel welding copper retainer commonly used in a main bearing of the existing heading machine can reduce abrasion and damage to a ferrule by welding a copper block, deformation is inevitably caused due to residual stress during welding, so that abnormal sound is easily generated during the operation of the main bearing of the heading machine. Meanwhile, the deformation caused by the welding method directly influences the precision of the pockets during machining, and the precision of the surfaces of the pockets directly influences the abrasion of the rollers, so that the whole cage is scrapped when any pocket is machined but does not meet the requirement.
In order to reduce the rejection rate of the main bearing retainer of the tunneling machine, improve the manufacturing precision of the pocket hole blocks of the retainer and improve the operation reliability of the retainer, the embodiment provides the combined retainer for the main bearing of the tunneling machine.
As shown in fig. 1, the holder on the main bearing of the heading machine comprises a main push holder 1, a radial holder 2 and an auxiliary push holder 3, wherein the main push holder 1 and the auxiliary push holder 3 have the same structure.
As shown in fig. 2, the main push retainer 1 is a detachable combined retainer composed of a main push pocket block 11, a main push inner clamping block 12, a main push outer clamping block 13 and a main push connecting platform 14, and the detachable connection in this embodiment is preferably a bolt connection.
Specifically, as shown in fig. 3, the main push pocket block 11 has a groove, the groove surface is a main push pocket block inner wall surface 113, the main push pocket block outer attaching surface 112 and the main push pocket block inner attaching surface 115 are opposite surfaces, the main push pocket block 11 has main push pocket block outer connecting holes 111 at one end close to the main push pocket block outer attaching surface 112, and the main push pocket block 11 has main push pocket block inner connecting holes 114 at one end close to the main push pocket block inner attaching surface 115.
Specifically, as shown in fig. 4, the main push inner clamping block 12 is an arc-shaped clamping block, a plurality of main push inner clamping block connecting holes 122 are equidistantly arranged on the main push inner clamping block 12, two ends of the main push inner clamping block 12 are respectively provided with two main push inner clamping block assembling holes 121, and the main push inner clamping block attaching surface 123 is a groove surface for mounting the main push pocket hole block 11.
Specifically, as shown in fig. 5, the main push outer clamping block 13 is an arc-shaped clamping block, the arc length of the arc-shaped clamping block is greater than that of the main push inner clamping block 12, a plurality of main push outer clamping block connecting holes 131 are equidistantly formed in the main push outer clamping block 13, the main push outer clamping block connecting holes 131 and the main push inner clamping block connecting holes 122 are correspondingly formed to realize connection of the main push pocket hole block 11, two main push outer clamping block assembling holes 132 are respectively formed in two ends of the main push outer clamping block 13, and the main push outer clamping block attaching surface 133 is a groove surface for mounting the main push pocket hole block 11.
Specifically, as shown in fig. 6, the main push connecting table 14 is provided with a main push connecting table edge surface 141 and a main push connecting table raceway attaching surface 143, two opposite surfaces of the main push connecting table 14 are provided with grooves, and each groove is provided with a main push connecting table outer assembling hole 142 matching the main push outer clamping block assembling hole 132 and a main push connecting table inner assembling hole 144 matching the main push inner clamping block assembling hole 121.
In this embodiment, the preferred main push pocket hole block 11, the main push inner clamping block 12 and the main push outer clamping block 13 are made of steel, and the main push connecting table 14 is made of copper.
Further, the specific assembling method of the main push retainer 1 is as follows:
first, the main push pocket block 11 is quenched to enhance its hardness, and since the size of the main push pocket block 11 is smaller than that of the main push cage 1, the inner wall surface 113 of the main push pocket block is processed with high precision.
Then, the assembly of the main push holder 1 is started, the outer attaching surface 112 of any one of the main push pocket hole blocks 11 is attached to the main push outer clamp block attaching surface 133, the positions of the two are moved to align the main push pocket hole block outer connecting hole 111 with the main push outer clamp block connecting hole 131, the bolts are used for pre-tightening, and the other main push pocket hole blocks 11 are sequentially connected with the main push outer clamp blocks 13 in a pre-tightening manner.
Furthermore, the main push inner clamping block attaching surface 123 and the main push pocket inner attaching surface 115 are attached tightly, the positions are adjusted to enable the main push inner clamping block connecting holes 122 to be aligned with the corresponding main push pocket inner connecting holes 114, bolts are used for pre-tightening, and the main push pocket block 11 and the main push inner clamping block 12 are sequentially connected in a pre-tightening mode.
Finally, aligning the main push connecting table outer assembling holes 142 and the main push connecting table inner assembling holes 144 of the main push connecting table 14 with the main push outer clamping block assembling holes 132 and the main push inner clamping block assembling holes 121 respectively, and performing pre-tightening connection by using bolts, wherein the main push connecting tables 14 on two sides can be connected with other main push pocket hole blocks 11, the main push inner clamping blocks 12 and the main push outer clamping blocks 13, fastening the bolts in a staggered manner after all the pre-tightening connection is completed, bonding and anti-loosening treatment are performed on the bolt connection positions by using bonding, then filling adhesive into the connection gaps to fasten the connection more, and completing the assembly of the main push retainer 1 after the adhesive is bonded and fastened.
As shown in fig. 7, the radial retainers 2 are detachable retainers composed of radial pocket blocks 21, radial clamping blocks 22 and radial connecting stages 23, it should be noted that one of the radial retainers 2 includes two radial clamping blocks 22, and the detachable connection in this embodiment is preferably a bolt connection.
Specifically, as shown in fig. 8, a groove is formed in the radial pocket block 21, the groove surface is an inner wall surface 215 of the radial pocket block, the lower attaching surface 212 of the radial pocket block is opposite to the upper attaching surface 213 of the radial pocket block, one end, close to the lower attaching surface 212 of the radial pocket block, of the radial pocket block 21 is provided with a lower radial pocket block connecting hole 211, one end, close to the upper attaching surface 213 of the radial pocket block, of the radial pocket block 21 is provided with an upper radial pocket block connecting hole 214, and the radial pocket block 21 is preferably made of steel.
Specifically, as shown in fig. 9, the radial clamping block 22 is an arc-shaped fixed flange, a plurality of radial clamping block connecting holes 221 are equidistantly formed in the radial clamping block 22, two ends of the radial clamping block 22 are respectively provided with two radial clamping block assembling holes 222, and the radial clamping block attaching surface 223 is a groove surface for mounting the radial pocket block 21.
Specifically, as shown in fig. 10, a radial connecting table raceway abutting surface 233 is provided on the radial connecting table 23, a group of opposite surfaces on the radial connecting table 23 are respectively provided with a groove, and each groove is provided with two groups of through holes, namely a radial connecting under-table assembling hole 231 and a radial connecting on-table assembling hole 232.
In this embodiment, the radial pocket block 21 and the radial clamping block 22 are preferably made of steel, and the radial connecting platform 23 is preferably made of copper.
Further, the specific assembling method of the radial pocket block 21 is as follows:
firstly, the radial clamping block 22 is placed upwards, the radial pocket block 21 is sequentially arranged in the radial clamping block 22, the binding surface 223 of the radial clamping block and the lower binding surface 212 of the radial pocket block are tightly bound, then the other radial clamping block 22 is covered at the upper part, the binding surface 223 of the other radial clamping block and the upper binding surface 213 of the radial pocket block are tightly bound, the positions of the two are adjusted to align the connecting hole 221 of the other radial clamping block and the connecting hole 214 of the radial pocket block, and the radial clamping block and the radial pocket block are sequentially connected in a pre-tightening mode through bolts.
Then, the radial clamping block 22 and the radial pocket hole block 21 are turned over, the abutting surface 223 of the radial clamping block and the lower abutting surface 212 of the radial pocket hole block are abutted again, the positions of the radial clamping block and the radial pocket hole block are adjusted to enable the radial clamping block connecting hole 221 and the radial pocket hole block lower connecting hole 211 to be aligned, and bolts are used for pre-tightening connection in sequence.
Finally, assemble hole 231 and radial connection bench equipment hole 232 with two radial clamp splice equipment holes 222 alignment respectively under the radial connection platform, use the bolt to carry out the pretension and connect, the radial connection platform 23 of both sides can access other radial pocket hole piece 21 and radial clamp splice 22, treat to all accomplish the crisscross fastening of bolt after the pretension is connected, use to splice locking processing of bonding to the bolted connection department, it is full of the adhesive to make the connection more firm to fill in the joint gap department simultaneously, wait for the assembly of accomplishing radial holder 2 promptly after the adhesive adhesion fastening.
The preferred adhesive of this embodiment is an industrial glue.
In addition, the combined retainer provided by the embodiment is detachably connected, and the specific detaching mode is as follows:
in order to realize the disassembly of the combined retainer, the bonding anti-loosening treatment place of the bolt is heated and softened firstly, the bolt is disassembled, then the gap of the bonding treatment is heated and softened, the pocket block, the clamping block and the connecting table are decomposed, and the disassembly is completed by cleaning the adhesive on the surface.
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. The invention mainly aims to avoid the deformation influence caused by welding, save the manufacturing cost caused by welding line detection, realize high-precision processing of the pocket block, enable the combined retainer to be detachable and remanufactured, facilitate the maintenance and remanufacturing of the main bearing and prolong the service life of the heading machine. Therefore, the size and radian of the pocket block, the number of the connecting pocket blocks on the clamping block, the number and positions of the assembling holes and the connecting holes, the connecting mode among the components of the combined retainer and the like can be adjusted according to actual conditions, and the combined retainer is not limited to the embodiment. 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 (8)
1. A combined retainer for a main bearing of a heading machine is characterized in that the combined retainer is a main bearing retainer comprising a hole pocket block, a first clamping block, a second clamping block and a connecting table; the connecting table is detachably connected with the first clamping block and the second clamping block respectively; the pocket hole block is provided with a pocket hole, and the connecting platform is provided with a raceway surface and a flange surface.
2. The unitized cage of claim 1, wherein said removable connection is a bolted connection.
3. The unitized cage of claim 2, wherein said first and second blocks are provided with first assembly holes and first connection holes, said connecting table is provided with second assembly holes matching said first assembly holes, and said pocket block is provided with second connection holes matching said first connection holes.
4. The unitized cage of claim 3, wherein the first connection holes on said first clamp block are equidistantly disposed on said first clamp block and correspond to the first connection holes on said second clamp block.
5. The unitized cage of claim 1, wherein said first and second clamp blocks are provided with steps engageable with said pocket blocks; the connecting table is provided with steps which can be clamped with the first clamping block and the second clamping block.
6. The unitized cage of claim 1, wherein said first clamp block, said second clamp block, and said pocket block are all steel; the connecting platform is made of copper.
7. The unitized cage of claim 1, wherein said removable connection further comprises a glue joint, said unitized cage gap being filled with an adhesive.
8. An assembling method for assembling the unitized cage of claims 1-7, comprising:
step one, quenching and processing the pocket block, the first clamping block and the second clamping block;
secondly, clamping the pocket block with the first clamping block, adjusting the position of the pocket block to align a second connecting hole in the pocket block with a first connecting hole in the first clamping block, pre-tightening by using a bolt, and repeating the steps to pre-tighten the pocket block until the first connecting hole in the first clamping block is used up;
thirdly, clamping the second clamping block with the pocket block, adjusting the position of the pocket block to align the first connecting hole on the second clamping block with the corresponding second connecting hole on the pocket block, pre-tightening by using a bolt, and repeating the steps to pre-tighten the second clamping block until the first connecting hole on the second clamping block is used up;
and fourthly, clamping the connecting table with the first clamping block and the second clamping block, adjusting the position of the connecting table to align the first assembling hole and the second assembling hole, performing pre-tightening connection by using bolts, fastening the bolts in a staggered manner after all pre-tightening connections are completed, performing bonding anti-loosening treatment on the joints of the bolts by using glue joint, and filling adhesive into the joints to complete the assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087425.5A CN114483794B (en) | 2022-01-25 | Combined retainer for main bearing of heading machine and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087425.5A CN114483794B (en) | 2022-01-25 | Combined retainer for main bearing of heading machine and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483794A true CN114483794A (en) | 2022-05-13 |
| CN114483794B CN114483794B (en) | 2024-04-19 |
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Citations (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0750125A1 (en) * | 1995-06-20 | 1996-12-27 | The Torrington Company | Bearing retainer |
| JP2000035060A (en) * | 1998-07-21 | 2000-02-02 | Ntn Corp | Clutch built-in rotating component |
| JP2001330035A (en) * | 2000-05-19 | 2001-11-30 | Nsk Ltd | Roller bearing |
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