Slow cooling device for wheel welding

Abstract

The utility model relates to a slow cooling device for wheel welding. The slow cooling device comprises a room body, a heating device, a pair of guide rails and a wheel set stopping device. The house body comprises a roof, a house bottom and wall bodies arranged on the house bottom, the wall bodies comprise a pair of oppositely arranged fixed wall bodies and a pair of oppositely arranged movable wall bodies, and the movable wall bodies can be operably opened or closed. The heating device is used for heating the interior of the room body. The guide rail is arranged on the house bottom, penetrates through the movable wall body and extends for a certain distance outside the movable wall body, and the guide rail has a preset gradient. The wheel set stopping device is arranged on the house bottom, located at the low-gradient end of the guide rail and adjacent to one of the movable walls, and the wheel set stopping device can be operably switched between a stopping position and a releasing position to stop rolling of the wheel set or allow rolling of the wheel set. According to the slow cooling device for wheel welding, the cooling speed after welding is effectively reduced, the surfacing repair quality of wheel rims is improved, the welding repair rate of wheels is reduced, and cracks are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of surfacing welding, heat preservation and slow cooling of railway metallurgical vehicle wheels, in particular to a slow cooling device for wheel welding. Background Art

[0002] The carbon content of rolled steel wheels for railways is 0.55% to 0.65%. The biggest difficulty in surfacing welding is to prevent welding cracks. At the same time, with the promotion and application of high-wear-resistant deposited metals, in order to improve the quality of surfacing repair and reduce the occurrence of welding crack defects, in addition to taking preheating measures before welding, it is particularly important to keep the workpiece warm and cool slowly after welding to reduce residual stress.

[0003] The wheel surfacing heat preservation and slow cooling method in the prior art is mostly a simple single heat preservation cover 600 ( Fig. 9 ), that is, each wheel of the wheelset 500 is immediately insulated and naturally cooled with an insulation cover 600 of the same size as the wheel after welding. However, since a single insulation cover 600 weighs about 100 pounds, after the wheel welding is completed, two people are required to lift the insulation cover 600 or use an overhead crane to lift the insulation cover 600 to put it on the outside of the wheel to insulate and slowly cool the wheel. This increases the auxiliary workload, the operation is cumbersome and time-consuming, and the wheel cannot be insulated in time after welding. In addition, there is no insulation material inside the insulation cover 600 and there are no heating conditions, so the cooling speed is fast, and the insulation and slow cooling effect is not good, which will cause martensitic structure to appear in the heat-affected zone, easily produce crack defects, increase the wheel repair rate, reduce the wheel service life, and cause the wheel to be scrapped prematurely.

[0004] Therefore, there is much room for improvement in the prior art device for heat preservation and slow cooling of wheels after welding. Utility Model Content

[0005] The utility model provides a slow cooling device for wheel welding, which is used to solve the technical problem that the cooling speed of the worn surfacing welding repair of the rolled steel wheel rim is too fast and cracks are easily generated.

[0006] In order to solve the above technical problems, the utility model provides a slow cooling device for wheel welding, comprising:

[0007] A room body, the room body comprising a roof, a floor and a wall body arranged on the floor, the wall body comprising a pair of fixed walls arranged opposite to each other and a pair of movable walls arranged opposite to each other, the movable walls being operable to be opened or closed;

[0008] A heating device, the heating device is used to heat the interior of the room;

[0009] A pair of guide rails, the guide rails are arranged on the floor, the guide rails penetrate the movable wall and extend a distance outside the movable wall, and the guide rails have a predetermined slope;

[0010] A wheelset stop device is arranged on the floor, located at the low slope end of the guide rail and adjacent to one of the movable walls, and the wheelset stop device can be operated to switch between a stop position and a release position to stop the wheelset from rolling or allow the wheelset to roll.

[0011] In some embodiments, the roof is fixedly connected to the fixed wall, the movable wall includes a pair of double-door leaves and a threshold located below the door leaves, the door leaves are hingedly connected to the fixed wall, the door leaves are operably connected to the roof so as to be able to open or fix the door leaves closed, and a pair of guide rail through holes for the guide rail to pass through are provided on the threshold, and the height of the threshold and the size of the guide rail through holes match the wheelset to allow the wheelset to roll over the threshold.

[0012] In some embodiments, the heating device is an electric heating plate, and the heating device is disposed on the floor and between the pair of guide rails.

[0013] In some embodiments, the predetermined slope of the guide rail is 5‰-7‰, and a stop protrusion for stopping the wheelset from rolling is provided on the free end of the guide rail located at the low-slope end.

[0014] In some embodiments, the wheelset stopping device comprises:

[0015] Driving mechanism;

[0016] a first wheel stop assembly;

[0017] a second wheel stop assembly, wherein the first wheel stop assembly and the second wheel stop assembly are respectively disposed adjacent to the inner sides of the pair of guide rails and opposite to each other;

[0018] A deflection assembly, wherein the deflection assembly is rotatably connected to the first wheel stop assembly and the second wheel stop assembly, and the driving mechanism is drivingly connected to the deflection assembly to drive the deflection assembly to deflect, so that the deflection assembly drives the first wheel stop assembly and the second wheel stop assembly to deflect toward or away from the guide rail, so that the first wheel stop assembly and the second wheel stop assembly are in a stopping position or a releasing position, thereby stopping the wheelset from rolling or allowing the wheelset to roll.

[0019] In some embodiments, the driving mechanism is a pneumatic bellows, the bellows rod of the pneumatic bellows is connected to the deflection assembly, the air inlet and outlet ducts of the pneumatic bellows are respectively connected to the air inlet duct and the air exhaust duct, the air inlet duct is provided with an air inlet valve, and the exhaust duct is provided with an exhaust valve.

[0020] In some embodiments,

[0021] The first wheel stop assembly comprises a first wheel stop plate and a pair of first wheel stop plate connecting members which are arranged opposite to each other and fixed on the floor, the first wheel stop plate is rotatably connected to the first wheel stop plate connecting member, and the upper end of the first wheel stop plate is provided with a first arc surface which matches one wheel in the wheel pair;

[0022] The second wheel stop assembly includes a second wheel stop plate and a pair of second wheel stop plate connecting members which are arranged opposite to each other and fixed on the floor of the house. The second wheel stop plate is rotatably connected to the second wheel stop plate connecting member. The upper end of the second wheel stop plate is provided with a second arc surface which matches the other wheel in the wheelset.

[0023] In some embodiments,

[0024] The first arc surface is provided with a first arc plate matching the curvature of the first arc surface, and the first arc plate extends beyond one side end of the first wheel stop plate;

[0025] The second arc surface is provided with a second arc plate matching the curvature of the second arc surface, and the second arc plate extends beyond one side end of the second wheel stop plate.

[0026] In some embodiments, the deflection assembly comprises:

[0027] A deflection connecting member, the deflection connecting member comprises a fixing pin and a connecting plate sleeved and connected to the fixing pin, the fixing pin is fixed on the floor and is located in the middle of the pair of guide rails,

[0028] A central through hole is provided at the center of the connecting plate, a first through hole and a second through hole are provided at both ends of the connecting plate, a third through hole is provided between the first through hole and the central through hole, and a fourth through hole is provided between the second through hole and the central through hole.

[0029] The fixing pin comprises a pin body and a threaded section extending from the pin body, and the central through hole is sleeve-connected with the threaded section so that the connecting plate can rotate around the threaded section;

[0030] A first transmission rod, one end of which is connected to the first wheel stop plate, and the other end of which is connected to the first through hole;

[0031] a second transmission rod, one end of which is connected to the second wheel stop plate, and the other end of which is connected to the second through hole;

[0032] a third transmission rod, one end of which is connected to the bellows rod, and the other end of which is connected to the third through hole;

[0033] A tension component, the tension component includes a spring fixing part and a tension spring, the spring fixing part is fixed on the floor, one end of the tension spring is connected to the fourth through hole, and the other end is connected to the spring fixing part, the pneumatic bellows and the tension component are respectively located on both sides of the deflection connecting part.

[0034] In some embodiments, thermal insulation materials are provided on the roof, the floor and the walls.

[0035] Compared with the prior art, the beneficial technical effects of the present disclosure are:

[0036] (1) The slow cooling device for wheel welding of the utility model is provided with a room body with a heating device, and the insulation temperature can be adjusted in advance according to the welding process requirements, thereby effectively reducing the cooling speed after welding, improving the quality of wheel rim surfacing repair, reducing the wheel welding rework rate, and avoiding the situation where the wheel is scrapped due to cracks.

[0037] (2) The wheel welding slow cooling device of the utility model is suitable for all railway metallurgical vehicle wheel wear cladding insulation slow cooling treatment, can meet the post-welding insulation slow cooling of various wheels, and has a wide range of application prospects. At the same time, it reduces the workload of overhead crane auxiliary lifting, is simple to operate, and has high work efficiency and safety factor.

[0038] (3) The wheel welding slow cooling device of the present invention is designed with a guide rail having a slope of 5‰-7‰ according to the shape characteristics of the wheels in the wheelset, so that the wheelset can automatically roll into or out of the housing along the guide rail.

[0039] (4) The slow cooling device for wheel welding of the utility model is provided with a wheelset stop device driven by a pneumatic bellows, and operable air inlet valves and exhaust valves are provided outside the room body, so that personnel can operate outside the room body to stop the wheelset from rolling or allow the wheelset to roll as needed, thereby avoiding direct contact between personnel and the wheelset and causing burns or squeezing injuries. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0041] Figure 1 This is a schematic diagram of the structure of the slow cooling device for wheel welding of the utility model, wherein the housing is in a closed state;

[0042] Figure 2This is another structural schematic diagram of the slow cooling device for wheel welding of the utility model, wherein the housing is in an open state;

[0043] Figure 3 The schematic diagram of the structure of the wheelset stopper, the guide rail and the door sill of the slow cooling device for wheel welding of the utility model is shown, wherein the wheelset stopper is in the stopper position;

[0044] Figure 4 The schematic diagram of the structure of the wheelset stopper, the guide rail and the threshold of the slow cooling device for wheel welding of the utility model is shown, wherein the wheelset stopper is in the release position;

[0045] Figure 5 A schematic structural diagram of a wheelset stopper device in a stopper position of a slow cooling device for wheel welding of the utility model is shown;

[0046] Figure 6 A schematic structural diagram showing a connecting plate of a wheelset stopper device of a slow cooling device for wheel welding of the utility model;

[0047] Figure 7 A schematic structural diagram of an air inlet duct and an air exhaust duct of a pneumatic bellows of a slow cooling device for wheel welding of the utility model is shown;

[0048] Figure 8 A schematic structural diagram of a wheelset stopping device of the utility model stopping a wheelset is shown;

[0049] Fig. 9 The present invention shows a schematic structural diagram of a heat preservation cover for wheel surfacing and heat preservation and slow cooling in the prior art. DETAILED DESCRIPTION

[0050] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0051] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0052] The endpoints and any values ​​of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article.

[0053] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0054] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0055] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0056] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0057] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0058] like Figure 1 and Figure 2 As shown, the present disclosure provides a slow cooling device for wheel welding, including a housing 100, a heating device 200, a pair of guide rails 300 and a wheelset stop device 400. The slow cooling device for wheel welding of the utility model is suitable for heat preservation and slow cooling treatment of various types of rolled steel wheels after surfacing welding repair on site.

[0059] The room body 100 includes a roof 101, a floor 102, and a wall 103 disposed on the floor 102. In a preferred embodiment, the size of the room body 100 can meet the capacity of 6 sets of wheel pairs, that is, it can meet the maximum welding insulation of a single molten iron car wheel. The wall 103 includes a pair of relatively fixed walls 104 and a pair of relatively movable walls 105, and the pair of movable walls 105 can be operably opened or closed. The heating device 200 is used to heat the interior of the room body 100. In a preferred embodiment, the heating device 200 is a 36-kilowatt electric heating plate, which is disposed on the floor 102 and is located between a pair of guide rails 300. The heating temperature range of the heating device 200 is 0 to 200°C, and the heating temperature can be adjusted according to process requirements.

[0060] The guide rail 300 is disposed on the floor 102 , passes through the pair of movable walls 105 and extends a distance outside the movable walls 105 , and has a predetermined slope. In a preferred embodiment, the predetermined slope of the guide rail is 5‰-7‰. One end of the guide rail 300 adjacent to the entrance of the house 100 (i.e., one of the movable walls) has a high slope end, and one end of the guide rail 300 adjacent to the exit of the house 100 (i.e., the other movable wall) has a low slope end. A stop protrusion 301 for stopping the rolling of the wheel set 500 is provided on the free end of the guide rail 300 located at the low slope end, so that the wheel set 500 can automatically roll into the interior of the house 100 from the high slope end of the guide rail 300 through the entrance of the house 100, and can automatically roll out of the interior of the house 100 through the threshold 107 through the exit of the house 100 after being kept warm and slowly cooled, and then stop at the low slope end of the guide rail 300 located outside the house 100 after being stopped by the stop protrusion 301, without the need for personnel to manually roll the wheel set 500 to avoid burns or squeeze injuries. In a preferred embodiment, the distance between the guide rails 300 is 1435 mm.

[0061] The wheel pair stop device 400 is disposed on the floor 102, at the low slope end of the guide rail 300 and adjacent to one of the movable walls 105. The wheel pair stop device 400 is operable to be in a stop position ( Figure 3 ) and the release position ( Figure 4) to stop the wheelset 500 from rolling or to allow the wheelset 500 to roll. In a preferred embodiment, the wheelset stopper 400 is arranged at a position 400 mm away from the exit of the house 100.

[0062] like Figure 1 and Figure 2 As shown, the roof 101 is fixedly connected to the fixed wall 104, and the movable wall 105 includes a pair of double-opening door leaves 106 and a threshold 107 located below the door leaves 106. The door leaves 106 are hingedly connected to the fixed wall 104, and the door leaves 106 are operably connected to the roof 101 so that the door leaves 106 can be opened or fixedly closed. For example, Figure 2 The right door leaf of the pair of door leaves 106 has a covering portion 109 extending along the free side of the right door leaf. When the door leaf 106 is closed, the covering portion 109 can just cover the Figure 2 The free side of the left door leaf of the pair of door leaves 106 ( Figure 1 ).like Figure 1 As shown, a pair of shaft connecting members 110 with shaft connecting holes are arranged opposite to each other on the free side of the roof 101. A connecting shaft 112 is arranged at one end of the L-shaped member 111, and both ends of the connecting shaft 112 are respectively inserted into the shaft connecting holes of the shaft connecting member 110, so that the L-shaped member 111 can rotate around the connecting shaft 112. When the door leaf 106 is closed and the covering part 109 covers the free side of the left door leaf in the door leaf 106, the other end of the L-shaped member 111 can just cover the upper end of the covering part 109. A threaded hole is arranged at the other end of the L-shaped member 111, and the first screw 113 is screwed into the threaded hole until it abuts against the covering part 109, so that the door leaf 106 can be fixed and closed. A pair of guide rail through holes 108 for the guide rail 300 to pass through are arranged on the threshold 107, and the height of the threshold 107 and the size of the guide rail through holes 108 match the wheel set 500 to allow the wheel set 500 to automatically roll over the threshold 107 and leave the house body 100.

[0063] like Figure 3 As shown, the wheel pair stopping device 400 includes a driving mechanism 401, a first wheel stopping assembly 402, a second wheel stopping assembly 403 and a deflection assembly 404. The first wheel stopping assembly 402 and the second wheel stopping assembly 403 are respectively arranged adjacent to the inner side of a pair of guide rails 300. The deflection assembly 404 is deflectably connected to the first wheel stopping assembly 402 and the second wheel stopping assembly 403. The driving mechanism 401 is drivingly connected to the deflection assembly 404 to drive the deflection assembly 404 to deflect, so that the deflection assembly 404 drives the first wheel stopping assembly 402 and the second wheel stopping assembly 403 to deflect in a direction close to or away from the guide rail 300, so that the first wheel stopping assembly 402 and the second wheel stopping assembly 403 are in a stopping position or a releasing position, thereby stopping the wheel pair 500 from rolling or allowing the wheel pair 500 to roll.

[0064] like Figure 3 and Figure 4 As shown, the driving mechanism 401 is a pneumatic bellows, and the bellows rod 405 of the pneumatic bellows 401 is connected to the deflection assembly 404. Figure 4 and Figure 7 As shown, the air inlet and outlet ducts 406 of the pneumatic bellows 401 are connected to the air inlet duct 407 and the air exhaust duct 408 through the pipe 417, respectively. The air inlet duct 407 is provided with an air inlet valve 409, and the air exhaust duct 408 is provided with an air exhaust valve 410. The air inlet duct 407 and the air exhaust duct 408 are arranged on the outer side of one of the fixed walls 104. It should be understood by those skilled in the art that the pneumatic bellows 401 is a component used on a locomotive in the prior art. There is a piston in the bellows. The air intake pushes the piston to extend and close the air intake valve. When the air exhaust valve is opened, the air in the bellows is discharged and the piston retracts.

[0065] like Figure 3 , Figure 4 and Figure 5 As shown, the first wheel stop assembly 402 includes a first wheel stop plate 411 and a pair of first wheel stop plate connecting members 412 that are oppositely arranged and fixed on the floor 102. The first wheel stop plate 411 is rotatably connected to the first wheel stop plate connecting member 412. The pair of first wheel stop plate connecting members 412 are in the form of vertical plates, and the first wheel stop plate 411 is arranged between the pair of first wheel stop plate connecting members 412. The pair of first wheel stop plate connecting members 412 are respectively provided with first pin shaft holes, and the first wheel stop plate 411 is rotatably connected to the first wheel stop plate connecting member 412 at both side ends of the bottom through first pin shafts 416. Figure 5 As shown, the upper end of the first wheel stopper 411 is provided with a first arc surface 413 matching one of the wheels in the wheelset 500. The first arc surface 413 is provided with a first arc plate 414 matching the curvature of the first arc surface 413, and the first arc plate 414 extends beyond a side end 415 of the first wheel stopper 411 so as to contact one of the wheels in the wheelset 500 more smoothly.

[0066] like Figure 3 , Figure 4 and Figure 5 As shown, the second wheel stop assembly 403 includes a second wheel stop plate 421 and a pair of second wheel stop plate connecting members 422 that are oppositely arranged and fixed on the floor 102. The second wheel stop plate 421 is rotatably connected to the second wheel stop plate connecting member 422. The pair of second wheel stop plate connecting members 422 are in the form of vertical plates, and the second wheel stop plate 421 is arranged between the pair of second wheel stop plate connecting members 422. The pair of second wheel stop plate connecting members 422 are respectively provided with second pin shaft holes, and the second wheel stop plate 421 is rotatably connected to the second wheel stop plate connecting member 422 at both side ends of the bottom through second pin shafts 426. Figure 5As shown, the upper end of the second wheel stopper 421 is provided with a second arc surface 423 matching the other wheel in the wheelset 500. The second arc surface 423 is provided with a second arc plate 424 matching the curvature of the second arc surface 423, and the second arc plate 424 extends beyond a side end 425 of the second wheel stopper 421 so as to contact the other wheel of the wheelset 500 more smoothly.

[0067] like Figure 3 and Figure 4 As shown, the deflection assembly 404 includes a deflection connection member 431 , a first transmission rod 432 , a second transmission rod 433 , a third transmission rod 434 and a tension assembly 435 .

[0068] like Figure 3 and Figure 4 As shown, the deflection connecting member 431 includes a fixing pin 441 and a connecting plate 442 sleeved and connected to the fixing pin 441. The fixing pin 441 is fixed on the floor 102 and is located in the middle of a pair of guide rails 300. Figure 6 As shown, a central through hole 443 is provided at the center of the connecting plate 442, a first through hole 444 and a second through hole 445 are provided at both ends of the connecting plate 442, a third through hole 446 is provided between the first through hole 444 and the central through hole 443, and a fourth through hole 447 is provided between the second through hole 445 and the central through hole 443. Figure 5 As shown, the fixing pin 441 includes a pin body 448 and a threaded section 449 extending from the pin body 448 , and the central through hole 443 is sleeve-connected with the threaded section 449 so that the connecting plate 442 can rotate around the threaded section 449 .

[0069] like Figure 3 and Figure 4 As shown, one end of the first transmission rod 432 is connected to the first wheel stop plate 411, and the other end is connected to the first through hole 444. One end of the second transmission rod 433 is connected to the second wheel stop plate 421, and the other end is connected to the second through hole 445. One end of the third transmission rod 434 is connected to the bellows rod 405, and the other end is connected to the third through hole 446.

[0070] like Figure 5As shown, the first transmission rod 432, the second transmission rod 433 and the third transmission rod 434 are respectively provided with a first U-shaped portion 462, a second U-shaped portion 463 and a third U-shaped portion 464 at two free ends. The first U-shaped portion 462, the second U-shaped portion 463 and the third U-shaped portion 464 have a first annular portion 472, a second annular portion 473 and a third annular portion 474 with holes at two free ends. The first stopper plate 411 and the second stopper plate 421 are respectively provided with a first protrusion 465 and a second protrusion 466 with holes. The first annular portion 472 of the first U-shaped portion 462 at one end of the first transmission rod 432 is connected to the first protrusion 465 of the first stopper plate 411 through a second screw 467. The second annular portion 473 of the second U-shaped portion 463 at one end of the second transmission rod 433 is connected to the second protrusion 466 of the second stopper plate 421 through a second screw 467. The first annular portion 472 of the first U-shaped portion 462 at the other end of the first transmission rod 432 is connected to the first through hole 444 of the connecting plate 442 through the second screw 467. The second annular portion 473 of the second U-shaped portion 463 at the other end of the second transmission rod 433 is connected to the second through hole 445 of the connecting plate 442 through the second screw 467. A bellows annular portion with a hole is provided at the free end of the bellows rod 405 of the pneumatic bellows 401, the third annular portion 474 of the third U-shaped portion 464 at one end of the third transmission rod 434 is connected to the bellows annular portion of the bellows rod 405 through the second screw 467, and the third annular portion 474 of the third U-shaped portion 464 at the other end of the third transmission rod 434 is connected to the third through hole 446 of the connecting plate 442 through the second screw 467.

[0071] like Figure 5 As shown, the tension assembly 435 includes a spring fixing member 436 and a tension spring 437. The spring fixing member 436 is in the form of a vertical plate and is fixed on the floor 102. One end of the tension spring 437 is hooked and connected with the fourth through hole 447 of the connecting plate 442, and the other end of the tension spring 437 is connected with the spring fixing member 436 through the third screw 469. The tension spring 437 can assist the bellows rod 405 to retract and the first wheel stop plate 411 and the second wheel stop plate 421 to return to their original positions. The head of the third screw 469 has a fourth annular portion 470 with a hole, and the other end of the tension spring 437 is hooked and connected with the fourth annular portion 470. As shown in FIG. Figure 3 As shown, the pneumatic bellows 401 and the tension assembly 435 are respectively located on two sides of the deflection connecting member 431 .

[0072] In a preferred embodiment, the entire house 100 is made of steel plates, and thermal insulation materials are arranged inside the roof 101, the floor 102 and the wall 103. The thermal insulation material can be, for example, thick aluminum silicate fiberboard (high temperature resistance 1200 degrees Celsius) to achieve thermal insulation.

[0073] The working method of the slow cooling device for wheel welding of the utility model is as follows: the interior of the house body 100 is preheated to a predetermined temperature in advance using the heating device 200, the door leaf 106 at the entrance of the house body 100 is opened, and the wheelset 500 repaired by surfacing welding automatically rolls into the house body 100 from the high slope end of the guide rail 300. At this time, the first wheel stop plate 411 of the first wheel stop assembly 402 and the second wheel stop plate 421 of the second wheel stop assembly 403 of the wheelset stop device 400 are respectively maintained at the stop position after being deflected in the direction close to the guide rail 300. The wheelset 500 continues to roll along the guide rail 300 until it contacts the first curved plate 414 of the first wheel stop plate 411 and the second curved plate 424 of the second wheel stop plate 421 and is stopped and rolled to rest on the guide rail 300 ( Figure 8 ). When the wheelset 500 repaired by surfacing is insulated and slowly cooled, the first wheel stop plate 411 of the first wheel stop assembly 402 and the second wheel stop plate 421 of the second wheel stop assembly 403 of the wheelset stop device 400 are deflected away from the guide rail 300 so that the first wheel stop plate 411 and the second wheel stop plate 421 are in a released position. At this time, the first curved plate 414 of the first wheel stop plate 411 and the second curved plate 424 of the second wheel stop plate 421 are out of contact with the wheels of the wheelset 500, so that the wheelset 500 can roll out of the house 100 along the guide rail 300 through the exit of the house 100 again, and finally be stopped by the stop protrusion 301 and stop on a section of the guide rail 300 located outside the house 100 for standby use.

[0074] The working principle of the wheelset stop device 400 of the utility model is:

[0075] like Figure 3 As shown, when the wheel pair 500 needs to be stopped, the air inlet valve 409 is closed, the exhaust valve 410 is opened, and the bellows rod 405 of the pneumatic bellows 401 is retracted, thereby moving leftward (the direction "left" here refers to facing the Figure 3 The third transmission rod 434 is pulled back in the direction of the left hand side when the vehicle is in motion, and the third transmission rod 434 drives the connecting plate 442 to deflect in the clockwise direction. The first transmission rod 432 is pulled back to the left to deflect the first wheel stop plate 411 toward the guide rail 300. At the same time, the second transmission rod 433 is pulled back to the right (the direction "right" here means facing the vehicle). Figure 3The first wheel stopper 411 and the second wheel stopper 421 are in a stop position after being deflected in a direction close to the guide rail 300. At this time, the distance between the tops of the first wheel stopper 411 and the second wheel stopper 421 is, for example, 1430 mm, and the distance between the bottoms is, for example, 1330 mm. The first wheel stopper 411 and the second wheel stopper 421 are respectively in a state of being inclined in a direction close to the guide rail 300. Since the distance between the tops of the first wheel stopper 411 and the second wheel stopper 421 (1430 mm) is greater than the spacing between the inner sides of the wheelset 500 (for example, 1353 mm), the first arc plate 414 of the first wheel stopper 411 and the second arc plate 424 of the second wheel stopper 421 contact the wheels of the wheelset 500, thereby stopping the wheelset 500 from rolling.

[0076] like Figure 4 As shown, when the wheelset 500 needs to be released, the air inlet valve 409 is opened, the air outlet valve 410 is closed, and the bellows rod 405 of the pneumatic bellows 401 extends, thereby pushing the third transmission rod 434 to the right, and the third transmission rod 434 then drives the connecting plate 442 to deflect in the counterclockwise direction, and the first transmission rod 432 performs a follow-up push-out action to the right to deflect the first wheel stop plate 411 away from the guide rail 300, and at the same time, the second transmission rod 433 performs a follow-up push-out action to the left to deflect the second wheel stop plate 421 away from the guide rail 300, and the tension spring 437 is stretched by the follow-up force. The first wheel stop plate 411 and the second wheel stop plate 421 are in the release position after being deflected in the direction away from the guide rail 300. At this time, the distance between the top of the first wheel stopper 411 and the second wheel stopper 421 is, for example, 1300 mm, and the distance between the bottom is 1330 mm, and the first wheel stopper 411 and the second wheel stopper 421 are respectively in a state of being tilted away from the guide rail 300. Since the distance between the top of the first wheel stopper 411 and the distance between the bottom (1330 mm) are both smaller than the spacing between the inner sides of the wheelset 500 (1353 mm), the first curved plate 414 of the first wheel stopper 411 and the second curved plate 424 of the second wheel stopper 421 are disengaged from the wheels of the wheelset 500, thereby releasing the wheelset 500, and the wheelset 500 automatically rolls toward the low-slope end of the guide rail 300 under the action of gravity.

[0077] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A slow cooling device for wheel welding, characterized in that: include: A room body, the room body comprising a roof, a floor and a wall body arranged on the floor, the wall body comprising a pair of fixed walls arranged opposite to each other and a pair of movable walls arranged opposite to each other, the movable walls being operable to be opened or closed; A heating device, the heating device is used to heat the interior of the room; A pair of guide rails, the guide rails are arranged on the floor, the guide rails penetrate the movable wall and extend a distance outside the movable wall, and the guide rails have a predetermined slope; A wheelset stop device is arranged on the floor, located at the low slope end of the guide rail and adjacent to one of the movable walls, and the wheelset stop device can be operated to switch between a stop position and a release position to stop the wheelset from rolling or allow the wheelset to roll.

2. The slow cooling device for wheel welding according to claim 1, characterized in that: The roof is fixedly connected to the fixed wall, the movable wall includes a pair of double-opening door leaves and a threshold located below the door leaves, the door leaves are hingedly connected to the fixed wall, the door leaves are operably connected to the roof so as to be able to open or fix the door leaves, and the threshold is provided with a pair of guide rail through holes for the guide rail to pass through, the height of the threshold and the size of the guide rail through holes match the wheelset to allow the wheelset to roll over the threshold.

3. The slow cooling device for wheel welding according to claim 1, characterized in that: The heating device is an electric heating plate, which is arranged on the floor and between the pair of guide rails.

4. The slow cooling device for wheel welding according to claim 1, characterized in that: The predetermined slope of the guide rail is 5‰-7‰, and a stop protrusion for stopping the wheelset from rolling is arranged on the free end of the guide rail located at the low-slope end.

5. The slow cooling device for wheel welding according to claim 1, characterized in that: The wheelset stopping device comprises: Driving mechanism; a first wheel stop assembly; a second wheel stop assembly, wherein the first wheel stop assembly and the second wheel stop assembly are respectively disposed adjacent to the inner sides of the pair of guide rails and opposite to each other; A deflection assembly, wherein the deflection assembly is rotatably connected to the first wheel stop assembly and the second wheel stop assembly, and the driving mechanism is drivingly connected to the deflection assembly to drive the deflection assembly to deflect, so that the deflection assembly drives the first wheel stop assembly and the second wheel stop assembly to deflect toward or away from the guide rail, so that the first wheel stop assembly and the second wheel stop assembly are in a stopping position or a releasing position, thereby stopping the wheelset from rolling or allowing the wheelset to roll.

6. The slow cooling device for wheel welding according to claim 5, characterized in that: The driving mechanism is a pneumatic bellows, the bellows rod of the pneumatic bellows is connected to the deflection assembly, the air inlet and outlet ducts of the pneumatic bellows are respectively connected to the air inlet duct and the air exhaust duct, the air inlet duct is provided with an air inlet valve, and the exhaust duct is provided with an exhaust valve.

7. The slow cooling device for wheel welding according to claim 6, characterized in that: The first wheel stop assembly comprises a first wheel stop plate and a pair of first wheel stop plate connecting members which are arranged opposite to each other and fixed on the floor, the first wheel stop plate is rotatably connected to the first wheel stop plate connecting member, and the upper end of the first wheel stop plate is provided with a first arc surface which matches one wheel in the wheel pair; The second wheel stop assembly includes a second wheel stop plate and a pair of second wheel stop plate connecting members which are arranged opposite to each other and fixed on the floor of the house. The second wheel stop plate is rotatably connected to the second wheel stop plate connecting member. The upper end of the second wheel stop plate is provided with a second arc surface which matches the other wheel in the wheelset.

8. The slow cooling device for wheel welding according to claim 7, characterized in that: The first arc surface is provided with a first arc plate matching the curvature of the first arc surface, and the first arc plate extends beyond one side end of the first wheel stop plate; The second arc surface is provided with a second arc plate matching the curvature of the second arc surface, and the second arc plate extends beyond one side end of the second wheel stop plate.

9. The slow cooling device for wheel welding according to claim 8, characterized in that: The deflection assembly comprises: A deflection connecting member, the deflection connecting member comprises a fixing pin and a connecting plate sleeved and connected to the fixing pin, the fixing pin is fixed on the floor and is located in the middle of the pair of guide rails, A central through hole is provided at the center of the connecting plate, a first through hole and a second through hole are provided at both ends of the connecting plate, a third through hole is provided between the first through hole and the central through hole, and a fourth through hole is provided between the second through hole and the central through hole. The fixing pin comprises a pin body and a threaded section extending from the pin body, and the central through hole is sleeve-connected with the threaded section so that the connecting plate can rotate around the threaded section; A first transmission rod, one end of which is connected to the first wheel stop plate, and the other end of which is connected to the first through hole; a second transmission rod, one end of which is connected to the second wheel stop plate, and the other end of which is connected to the second through hole; a third transmission rod, one end of which is connected to the bellows rod, and the other end of which is connected to the third through hole; A tension component, the tension component includes a spring fixing part and a tension spring, the spring fixing part is fixed on the floor, one end of the tension spring is connected to the fourth through hole, and the other end is connected to the spring fixing part, the pneumatic bellows and the tension component are respectively located on both sides of the deflection connecting part.

10. The slow cooling device for wheel welding according to claim 9, characterized in that: The roof, the floor and the wall are all provided with thermal insulation materials.

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