CN117068223A - Replacement and construction method for three-and five-opening joint type turnout trolley wheel set of monorail traffic - Google Patents
Replacement and construction method for three-and five-opening joint type turnout trolley wheel set of monorail traffic Download PDFInfo
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- CN117068223A CN117068223A CN202310832635.7A CN202310832635A CN117068223A CN 117068223 A CN117068223 A CN 117068223A CN 202310832635 A CN202310832635 A CN 202310832635A CN 117068223 A CN117068223 A CN 117068223A
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000013461 design Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 238000005496 tempering Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 14
- 239000003921 oil Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K5/00—Apparatus for placing vehicles on the track; Derailers; Lifting or lowering rail vehicle axles or wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D15/00—Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K13/00—Other auxiliaries or accessories for railways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention relates to a replacement and construction method of three-five-joint type turnout trolley sets of monorail traffic, which is convenient for maintenance and replacement of later-stage turnout trolley sets, and comprises a jack support frame, a support sleeve, a drawing nut, a through hydraulic jack, a high-pressure oil inlet pipe, a high-pressure oil outlet pipe, an electric hydraulic pump station, a drawing screw rod, an adjusting nut, a gasket and a pressing plate, wherein the three-joint type turnout trolley sets and the five-joint type turnout trolley sets are quickly constructed, safely and reliably and the maintenance cost of the whole line is saved in the effective operation window time of a light rail operation line; the hydraulic jack of the through type is placed in the jack support frame in advance through the support sleeve, one end of the drawing screw rod is connected with the drawing nut, the other end of the drawing screw rod is connected with the adjusting nut after penetrating through the hydraulic jack of the through type and the pressing plate after being screwed with the piston in the hydraulic jack of the through type, and the oil inlet and outlet nozzle in the hydraulic jack of the through type is communicated with the oil outlet nozzle and the oil inlet nozzle in the electric hydraulic pump station through the high-pressure oil inlet pipe and the high-pressure oil outlet pipe respectively.
Description
Technical Field
The invention relates to a replacement and construction method for three-five-opening joint type turnout trolley sets of monorail traffic, which is convenient for maintenance and replacement of later-stage turnout trolley sets, and belongs to the field of replacement and manufacture of the three-five-opening joint type turnout trolley sets of monorail traffic, and the replacement and construction method for the three-five-opening joint type turnout trolley sets of monorail traffic, wherein the replacement and the construction method are quick, safe and reliable and save the maintenance cost of the whole line in the effective operation window time of a light rail operation line.
Background
With the rapid development of straddle-type monorail traffic, the existing straddle-type monorail traffic line in Chongqing city is overloaded to run, the design defects of the existing line are marked gradually after the operation, maintenance and inspection for nearly 20 years, and extremely severe operation and maintenance pressure is formed for the maintenance of the existing line, wherein trolley wheel sets are important parts of a turnout running mechanism, each three-five-open joint turnout is provided with 10-20 trolley wheel sets in total, and the trolley wheel sets are respectively arranged at two ends of a turnout trolley (shown in fig. 14). Each wheel set is connected with web shaft sleeves on two sides of the trolley through a wheel shaft (the diameter of the shaft is 80-100 mm) (small interference fit H7/p6 made of base holes is selected in the process of design), limiting clamping plates matched with outer flange surfaces of the shaft sleeves are arranged on two ends of the shaft heads (as shown in figure 15), and the wheel shaft is connected with a hollow shaft of the trolley set (clearance fit H7/g6 made of the base holes is selected in the process of design). When the turnout is manufactured, after the trolley wheel shaft is pressed into the trolley shaft sleeve through the press, the trolley and the turnout beam are assembled, rotated 180 degrees, loaded and transported to the installation site for turnout integral assembly. After a period of operation, the requirement that the wheel set runs for 6 years or 100 ten thousand times per running of the turnout can not be changed normally according to the turnout overhaul and maintenance standard, so that the wheel set of the existing line is out of service for a long time, and a certain potential safety hazard is caused to the normal running of the existing line.
The trolley wheel sets of three groups of turnouts (the diameters of the three groups of trolley shafts are 80mm and the lengths of the three groups of trolley shafts are 460 mm) are replaced and overhauled successively from 2018 to 2020, according to the field condition and analysis of the existing drawing, a 10T split hydraulic jack is arranged at the bottom end of the trolley, the trolley is lifted to a state that the trolley wheels can freely rotate, limiting clamping plates at the two ends of the trolley shafts are removed, a 20T mechanical jack is additionally arranged at the other side of the trolley, and 90% of trolley wheel sets can be replaced by utilizing a continuous lifting jack mode (shown in fig. 16), and only one set of trolley wheel sets can be replaced by 6 operators each time; an accident occurs in 7 months in 2020, and the accident is caused by that slag is clamped on the surface of a wheel shaft or the surface of an inner hole of a trolley shaft sleeve matched with the wheel shaft when the wheel shaft is installed in a factory, so that grinding damage exists on the surface of the shaft and the surface of the inner hole of the shaft sleeve after the installation is completed; the wheel shaft cannot be normally ejected when the wheel shaft is dismounted in the field, and the wheel shaft is in a clamping state when the wheel shaft is ejected for 1/4, so that great trouble is caused to the field maintenance construction operation, and a large amount of human resources are wasted.
The other group of turnout trolley wheel sets (the diameter of the trolley shafts of the group is 100mm and the length of the trolley shafts is 610 mm) are dismantled by the method, the grain wires are not moved, if the transverse pushing jack is considered to be increased, the high-strength bolts connected with the turnout beams of the trolley can be sheared, the high-strength bolts are damaged, and the method is abandoned.
Due to the special operation of the light rail line, the daily maintenance operation window time is only 3 hours (1:00 to 4:00 in the morning at night), but the service limit life of parts of the wheel set is shorter and shorter along with the movement of the operation time of the light rail line, the probability of the damage of the wheel set of the trolley at the later stage is larger and larger, and the whole Chongqing monorail traffic has similar conditions with 33 groups of turnouts.
Disclosure of Invention
The design purpose is as follows: the defects in the background art are avoided, and the design is that in the time of an effective operation window of a light rail operation line, the on-site quick construction and replacement of the turnout trolley wheel set can be safely and reliably completed, and the improvement of the trolley wheel shaft can be completed, so that the replacement and the construction method of the three-joint turnout trolley wheel set and the five-joint turnout trolley wheel set for the monorail transportation with the safe operation of the existing line are ensured.
The design scheme is as follows: in order to achieve the above design objective. The invention develops a targeted on-site replacement device for a turnout trolley set and a construction method thereof, which are quick to construct, safe and reliable and save the maintenance cost of the whole line within the effective operation window time of a light rail operation line, and simultaneously have a method for facilitating the maintenance and replacement of the turnout trolley set in the later period. The three-and five-joint type turnout trolley wheel group replacing device (trolley wheel group replacing device) for monorail transportation (shown in figure 1) consists of a jack support frame 1, a support sleeve 2, a drawing nut 3, a through hydraulic jack 4, a high-pressure oil inlet pipe 5, a high-pressure oil outlet pipe 6, an electric hydraulic pump station 7, a drawing screw rod 8, an adjusting nut 9, a gasket 10 and a pressing plate 11; the center-penetrating hydraulic jack 4 is pre-placed on the jack support frame 1 through the support sleeve 2, one end of the drawing screw rod 8 is connected with the drawing nut 3, the other end of the drawing screw rod 8 is connected with the adjusting nut 9 after penetrating through the center-penetrating hydraulic jack and the pressing plate 11 after being screwed with the piston in the center-penetrating hydraulic jack, and the oil inlet and outlet nozzle in the center-penetrating hydraulic jack 4 is communicated with the oil outlet nozzle and the oil inlet nozzle in the electric hydraulic pump station 7 through the high-pressure oil inlet pipe 5 and the high-pressure oil outlet pipe 6 respectively.
The jack support frame is of a frame type design, is made of common Q235-B square steel, M20 adjusting screws 12 are arranged at four corners of the bottom, and the center position of the jack can be finely adjusted by adjusting the height of the screws. The drawing screw rod is M36, is manufactured by machining 45# steel, has the length of 700mm, and is subjected to quenching and tempering heat treatment until the hardness reaches HRC25-35. The supporting sleeve is made of Q235-B common steel pipes and Q235-B common 20mm thick steel plates, after integral welding is finished, the end faces of the two ends are machined by taking the flange faces as references, the three faces are ensured to be positioned on the same horizontal plane, the diameter of an inner hole is 110mm, and the outer diameter of the inner hole is 2mm smaller than that of the inner hole of the jack cavity. The center-through hydraulic jack is 200T, the central aperture is 110mm, the maximum travel is 200mm, and the drawing of a wheel shaft with the maximum diameter of 100mm on site is completely met.
The construction method comprises the following steps: (1) During the operation command before the trolley wheel group is to be replaced, welding M36 drawing nuts in the center of the end face of the original trolley wheel shaft preferentially; (2) After the early-stage preparation work is finished, the replacement operation is repeated, a split hydraulic jack is arranged at the bottom end of the trolley set to be replaced, the trolley is lifted to a state that the trolley wheels can freely rotate, and the trolley is lifted by about 0.5mm at the moment; (3) Placing a skid outside a turnout platform corresponding to a wheel shaft, installing a drawing screw rod on a welded drawing nut, screwing the drawing screw rod with the drawing nut in a matching way, inserting a supporting sleeve, placing a jack supporting frame on the skid, enabling a through hydraulic jack to penetrate through the screw rod, and reserving a position gap for a flange positioning end of the supporting sleeve by a lifting center hollow shaft of an electric hydraulic pump station before the jack is used, wherein the supporting end of the supporting sleeve is combined with a web plate surface of a trolley, the other end of the supporting sleeve is immersed into an inner hole of the jack, a flange surface is combined with a top surface of the jack to form a surface parallel to the web plate of the trolley, adjusting a screw rod at four corners of the supporting frame, and adjusting the center hole of the jack and the center of the wheel shaft to be relatively positioned on the same horizontal line, and if the adjustment amount is too large, adding a wood padding block or a steel cushion block; after the jack is adjusted horizontally, sequentially loading a pressing plate and a gasket, and screwing an adjusting nut; (4) A high-pressure outlet oil pipe and a high-pressure inlet oil pipe are connected between the through hydraulic jack and the electric hydraulic pump station, the electric hydraulic pump station is connected with electricity, a hydraulic electric pump station switch is turned on, a trolley wheel shaft is slowly pulled, when the penetrating hydraulic jack reaches the maximum stroke, a return switch is opened to enable the penetrating hydraulic jack to reach an initial state, a power supply of the electro-hydraulic pump station is closed, a pressing plate and a gasket are moved, and an adjusting nut is screwed; and repeating the process for 3 to 4 times, and pulling out any wheel shaft.
Compared with the background technology, the replacement device and the construction method thereof can be used for efficient construction on time and steadily by the field practical application; secondly, the replacement device and the construction method can effectively avoid manufacturing and design defects of the turnout during manufacturing, and prevent the risk of accidents during site construction; thirdly, the newly designed and installed trolley wheel axle greatly reduces the difficulty and strength of later field maintenance operation, labor cost and mechanical equipment cost; fourthly, compared with the traditional dismantling mode, the device and the construction method cannot damage the high-strength bolt pairs of the trolley and the turnout beam; fifthly, compared with the traditional dismantling method, the device and the method greatly reduce the labor cost and the mechanical equipment cost of the replacement operation of the three-five-joint turnout trolley set of the existing Chongqing monorail line; and sixth, the application of the device and the method greatly improves the safety during construction operation.
Drawings
Fig. 1 is a schematic diagram of a trolley group replacing device, wherein in the diagram, 1 is a jack support frame 2, a support sleeve 3.M36 is a drawing nut 4.200T through hydraulic jack 5, a high-pressure oil inlet pipe 6, a high-pressure oil outlet pipe 7, an electric hydraulic pump station 8.M36 is a drawing screw rod 9.M36 adjusting nut 10, a gasket 11 and a pressing plate.
Fig. 2 is a schematic view of a support frame (with a small block, which should be replaced).
Fig. 3 is a schematic diagram of a 200T through hydraulic jack pre-positioned on a jack support frame.
Fig. 4 is a schematic diagram of the structure of an M36 draw screw.
Fig. 5 is a schematic cross-sectional and top view of the support sleeve.
Fig. 6 is a schematic front and cross-sectional view of a platen structure.
Fig. 7 is a schematic top and cross-sectional view of a gasket construction.
Fig. 8 is a schematic cross-sectional and top view of an adjustment nut structure.
Fig. 9 is a schematic view showing a state in which the adjustment nut is engaged with the washer.
Fig. 10 is a schematic diagram showing an initial state of the trolley set removed, wherein 01 is a turnout platform, 02 is a trolley running rail, 03 is a trolley, 04.10T is a split hydraulic jack, 05 is a turnout beam, 06 is a trolley axle to be pulled, 07 is a trolley set replacing device, and 08 is a skid.
Fig. 11 is a schematic view showing a state of a trolley set removing process, wherein 01, a turnout table 02, a trolley running rail 09, a trolley frame 06, a trolley axle to be pulled 00, a shaft sleeve 07, a trolley set replacing device 08 and a skid.
Fig. 12 is a schematic diagram of the three-view structure of the original trolley axle.
Fig. 13 is a schematic diagram of a three-view structure of a novel trolley axle.
Fig. 14 is a schematic diagram of a mounting position of a trolley wheel set in the background art, wherein 1 is a trolley wheel set, 2 is a limit clamping plate mounting bolt pair, 3 is a trolley, and 4 is a limit clamping plate.
Fig. 15 is a schematic diagram of the assembly relationship between a trolley wheel set and a trolley in the background art, wherein 1, the trolley is provided with a trolley running rail 2, a trolley frame 3, a trolley wheel shaft 4, a shaft sleeve 5 and a limiting clamping plate 6 trolley wheels.
FIG. 16 is a schematic diagram of a conventional trolley set of the background art with the switch station 1, trolley travel rail 2, trolley 3, trolley 4, high strength bolting pair, mechanical jack 5.20T, trolley axle 6, split 10T hydraulic jack 7.
Description of the embodiments
The invention is described in detail with reference to fig. 1-13 as follows:
1. during the operation command before the trolley wheel group is to be replaced, an M36 drawing nut is welded at the center of the end face of an original trolley wheel shaft (the trolley wheel shaft is made of 45# steel), the M36 drawing nut is made of 45# steel which is the same as the trolley wheel shaft, preheating and heat preservation treatment are paid attention to during welding, and the welding performance of the same-grade steel can reach an optimal state.
2. After the early-stage preparation work is finished, the replacement operation is repeated, a 10T split hydraulic jack is arranged at the bottom end of the trolley set to be replaced, the trolley is lifted to a trolley wheel in a free rotation state, and the trolley is lifted by about 0.5mm.
3. Placing a skid outside a turnout platform corresponding to a wheel shaft, installing an M36 drawing screw rod on a welded M36 drawing nut, tightening the M36 drawing screw rod in a matched manner, inserting a supporting sleeve, placing a jack supporting frame on the skid, enabling a 200T through hydraulic jack to penetrate the screw rod (a gap is reserved at the positioning end of a flange of the supporting sleeve through a lifting center hollow shaft of an electric hydraulic pump station before the jack is used, at the moment, the supporting end of the supporting sleeve is combined with a web plate surface of the trolley, the other end of the supporting sleeve is immersed into an inner hole of the jack, the flange surface is combined with the top surface of the jack to form a plane parallel to the web plate of the trolley, adjusting a screw rod at four corners of the supporting frame, adjusting the center hole of the jack and the center of the wheel shaft to be relatively positioned on the same horizontal line, and if the adjusting quantity is too large, adding a wood padding block or a steel cushion block; after the jack is adjusted horizontally, the pressing plate and the gasket are sequentially arranged, the adjusting nut is screwed down, and the outer support opening of the adjusting nut is matched with the inner hole of the gasket.
(1) As shown in figures 2 and 3, the jack support frame is of a frame type design and is made of common Q235-B square steel, M20 adjusting screws are arranged at four corners of the bottom, and the center position of the jack can be finely adjusted by adjusting the height of the screws. The dashed line in fig. 3 refers to a 200T through hydraulic jack, and 12 refers to an M20 adjusting screw.
(2) As shown in FIG. 4, the M36 drawing screw rod is manufactured by machining 45# steel, has the length of 700mm and is subjected to heat treatment to reach the hardness of HRC25-35.
(3) As shown in fig. 5, the supporting sleeve is made of Q235-B common steel pipes and Q235-B common 20mm thick steel plates (rib plates and flange surfaces are made of materials), after the whole welding is finished, the end surfaces of the two ends are machined by taking the flange surfaces as the reference, the three surfaces are ensured to be positioned on the same horizontal plane, the diameter of an inner hole is 110mm, and the outer diameter of the inner hole is 2mm smaller than that of the inner hole of the jack cavity.
(4) The central aperture of the 200T through hydraulic jack is 110mm, and the maximum stroke is 200mm; the drawing of the wheel shaft of maximum 100mm on site is completely satisfied.
(5) As shown in FIG. 6, the press plate is made of a common Q235-B plate with the thickness of 20 mm.
(6) As shown in FIG. 7, the gasket is manufactured using a conventional Q235-B having a thickness of 20 mm.
(7) As shown in FIG. 8, the adjusting nut is manufactured by machining 45# steel and is subjected to heat treatment to reach HRC25-35.
(8) As shown in fig. 9, the fit clearance between the adjusting nut and the washer support is 1mm.
4. The 200T through hydraulic jack is connected with a high-pressure outlet oil pipe and a high-pressure inlet oil pipe between the electric hydraulic pump station, and the electric hydraulic pump station is powered on, as shown in figure 10.
5. Turning on a hydraulic electric pump station switch, slowly drawing a trolley wheel shaft (shown in figure 11), turning on a return switch when a 200T through hydraulic jack reaches the maximum stroke, enabling the stroke of the through hydraulic jack to reach the initial state, turning off an electric hydraulic pump station power supply, moving a pressing plate and a gasket, and screwing an adjusting nut; and repeating the process for 3 to 4 times, pulling out any wheel shaft, removing the 9# turnout 18 trolley wheel sets (the diameter of the trolley wheel shaft of the turnout group is 100 mm) of the 9# turnout base of the second-line large weir of the railway traffic of the counter-weight celebration, wherein the maximum pulling pressure value of the trolley wheel shaft is 28T, the pulling time is not more than 20 minutes, and 3 trolley wheel sets can be replaced during each night operation.
6. Taking out the trolley wheel body after the trolley wheel shaft is completely pulled out, polishing, cleaning the trolley cavity, and painting antirust primer; overhauling and cleaning an inner hole of the shaft sleeve, and smearing lithium-based lubricating grease; loading a new trolley wheel body, loading a trolley wheel shaft with a new structure, and installing a trolley wheel shaft limiting clamping plate.
(1) The original trolley wheel axle and the trolley shaft sleeve are matched to select small interference fit H7/p6 made of base holes, and the matching mode is only suitable for factory production, manufacturing and assembly, is not beneficial to on-site later disassembly and maintenance, and is provided with M10X1 lubricating oil nozzles at two ends, as shown in figure 12.
(2) The trolley wheel shaft and the trolley wheel shaft sleeve are matched and matched by adopting clearance fit H7/g6 made of a base hole, and M36 drawing internal threads are arranged at the installation end of the trolley wheel shaft, so that the structure and the fit clearance are convenient for field installation, the later-stage disassembly is needed, the operation can be completed only by using a manual shaft puller, meanwhile, the bottom of a counter bore of the internal threads and the other end head of the shaft are provided with M10X1 lubricating oil nozzles, and the daily filling of lubricating oil of the whole trolley wheel set is not influenced, as shown in figure 13.
It should be understood that: although the above embodiments describe the design concept of the present invention in more detail, these descriptions are merely descriptions of the design concept of the present invention, and not limitations on the design concept of the present invention, and any combination, addition or modification not exceeding the design concept of the present invention falls within the scope of the present invention.
Claims (7)
1. The replacement device for the three-and five-opening joint type turnout trolley wheel set of the monorail transportation is characterized by comprising a jack support frame, a support sleeve, a drawing nut, a penetrating hydraulic jack, a high-pressure oil inlet pipe, a high-pressure oil outlet pipe, an electric hydraulic pump station, a drawing screw rod, an adjusting nut, a gasket and a pressing plate; the hydraulic jack of the through type is placed in the jack support frame in advance through the support sleeve, one end of the drawing screw rod is connected with the drawing nut, the other end of the drawing screw rod is connected with the adjusting nut after penetrating through the hydraulic jack of the through type and the pressing plate after being screwed with the piston in the hydraulic jack of the through type, and the oil inlet and outlet nozzle in the hydraulic jack of the through type is communicated with the oil outlet nozzle and the oil inlet nozzle in the electric hydraulic pump station through the high-pressure oil inlet pipe and the high-pressure oil outlet pipe respectively.
2. The replacement of the three-and-five-joint turnout trolley set for the monorail transit according to claim 1, which is characterized in that: the other end of the drawing screw rod is connected with a piston in the through hydraulic jack in a screwed way, penetrates through the through hydraulic jack, the pressing plate and the gasket, and is connected with the adjusting nut.
3. The replacement of the three-and-five-joint turnout trolley set for the monorail transit according to claim 1, which is characterized in that: the jack support frame is of a frame type design, is made of common Q235-B square steel, M20 adjusting screws are arranged at four corners of the bottom, and the center position of the jack can be finely adjusted by adjusting the height of the screws.
4. The replacement of the three-and-five-joint turnout trolley set for the monorail transit according to claim 1, which is characterized in that: the drawing screw rod is M36, is manufactured by machining 45# steel, has the length of 700mm, and is subjected to quenching and tempering heat treatment until the hardness reaches HRC25-35.
5. The replacement of the three-and-five-joint turnout trolley set for the monorail transit according to claim 1, which is characterized in that: the supporting sleeve is made of Q235-B common steel pipes and Q235-B common 20mm thick steel plates, after integral welding is finished, the end faces of the two ends are machined by taking the flange faces as references, the three faces are ensured to be positioned on the same horizontal plane, the diameter of an inner hole is 110mm, and the outer diameter of the inner hole is 2mm smaller than that of the inner hole of the jack cavity.
6. The replacement of the three-and-five-joint turnout trolley set for the monorail transit according to claim 1, which is characterized in that: the center-through hydraulic jack is 200T, the central aperture is 110mm, the maximum travel is 200mm, and the drawing of a wheel shaft with the maximum diameter of 100mm on site is completely met.
7. A construction method for replacing three-and five-joint turnout trolley sets in monorail traffic is characterized by comprising the following steps:
(1) During the operation command before the trolley wheel set is to be replaced, namely 1 am to 4 am at night, M36 drawing nuts are welded at the center of the end face of the original trolley wheel shaft preferentially;
(2) After the early-stage preparation work is finished, the replacement operation is repeated, a split hydraulic jack is arranged at the bottom end of the trolley set to be replaced, the trolley is lifted to a state that the trolley wheels can freely rotate, and the trolley is lifted by about 0.5mm at the moment;
(3) Placing a skid outside a turnout platform corresponding to a wheel shaft, installing a drawing screw rod on a welded drawing nut, screwing the drawing screw rod with the drawing nut in a matching way, inserting a supporting sleeve, placing a jack supporting frame on the skid, enabling a through hydraulic jack to penetrate through the screw rod, and reserving a position gap for a flange positioning end of the supporting sleeve by a lifting center hollow shaft of an electric hydraulic pump station before the jack is used, wherein the supporting end of the supporting sleeve is combined with a web plate surface of a trolley, the other end of the supporting sleeve is immersed into an inner hole of the jack, a flange surface is combined with a top surface of the jack to form a surface parallel to the web plate of the trolley, adjusting a screw rod at four corners of the supporting frame, and adjusting the center hole of the jack and the center of the wheel shaft to be relatively positioned on the same horizontal line, and if the adjustment amount is too large, adding a wood padding block or a steel cushion block; after the jack is adjusted horizontally, sequentially loading a pressing plate and a gasket, and screwing an adjusting nut;
(4) A high-pressure outlet oil pipe and a high-pressure inlet oil pipe are connected between the through hydraulic jack and the electric hydraulic pump station, the electric hydraulic pump station is connected with electricity, a hydraulic electric pump station switch is turned on, a trolley wheel shaft is slowly pulled, when the penetrating hydraulic jack reaches the maximum stroke, a return switch is opened to enable the penetrating hydraulic jack to reach an initial state, a power supply of the electro-hydraulic pump station is closed, a pressing plate and a gasket are moved, and an adjusting nut is screwed; and repeating the process for 3 to 4 times, and pulling out any wheel shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310832635.7A CN117068223A (en) | 2023-07-08 | 2023-07-08 | Replacement and construction method for three-and five-opening joint type turnout trolley wheel set of monorail traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310832635.7A CN117068223A (en) | 2023-07-08 | 2023-07-08 | Replacement and construction method for three-and five-opening joint type turnout trolley wheel set of monorail traffic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117068223A true CN117068223A (en) | 2023-11-17 |
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ID=88701241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310832635.7A Pending CN117068223A (en) | 2023-07-08 | 2023-07-08 | Replacement and construction method for three-and five-opening joint type turnout trolley wheel set of monorail traffic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117068223A (en) |
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2023
- 2023-07-08 CN CN202310832635.7A patent/CN117068223A/en active Pending
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