CN112240551A

CN112240551A - Local preheating device before repair welding repair of steel casting

Info

Publication number: CN112240551A
Application number: CN202011190491.2A
Authority: CN
Inventors: 曾利平
Original assignee: Jingshan Yilong Steel Casting Co ltd
Current assignee: Jingshan Yilong Steel Casting Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-01-19

Abstract

The invention discloses a local preheating device before repair welding repair of a steel casting, relates to the technical field of preheating devices, and solves the problem that the quality of the repair welding of a subsequent part cannot reach the standard due to the fact that the preheating effect of the existing casting preheating device on the part such as a crack and a gap is poor. A local preheating device before repair welding repair of a steel casting comprises a rotating ring; the rotating ring is inserted in the connecting block. When the device dwang and swivel becket rotate, can change the biax injection angle that heats the spray gun to can be better preheat the repair welding position to the foundry goods different conditions, and two double-stroke mechanisms can change top heating welder's use height and length, can preheat different positions of foundry goods under the mating reaction with rotatable year thing dish, preheat effectually, improved the device's practicality and flexibility.

Description

Local preheating device before repair welding repair of steel casting

Technical Field

The invention belongs to the technical field of preheating devices, and particularly relates to a local preheating device before repair welding repair of a steel casting.

Background

In the casting industry, preheating is needed when welding repair is carried out on a casting at the later stage, and preheating of the casting before welding repair is an important component procedure in the welding repair process. Preheating before repair welding effectively reduces the temperature difference between the repair welding pool and the casting body, reduces the local stress nonuniformity of the casting caused by nonuniform temperature in the repair welding process, and greatly reduces the risk of generating welding cracks and deformation.

If the application number is: CN201510948955.4 discloses an automatic casting preheating device and a preheating method thereof, which comprises an equipment support, a clamping mechanism fixedly arranged on the equipment support for fixing a casting, and a heating mechanism fixedly arranged on the equipment support for heating the casting; the clamping mechanism comprises a bearing platform arranged on the equipment support and a clamping head movably arranged on the bearing platform and used for clamping a casting, and the bearing platform is matched with the clamping head to complete the casting fixation; heating mechanism including set up in air supply assembly on the equipment support and set up in the heating element of air supply assembly air-out end, air supply assembly with the heating element cooperation is accomplished the foundry goods heating. The invention has obvious preheating effect on the casting, overcomes the defects of the traditional preheating method, greatly shortens the working time, saves the resources and improves the production efficiency of processing enterprises.

The heating angle of the existing heating spray gun for the casting preheating device is fixed, the part needing to be welded and repaired cannot be well preheated, the preheating effect on the part of cracks and gaps is poor, the quality of the subsequent welding and repairing of the part is not up to standard, and the practicability is low.

Therefore, in view of the above, research and improvement are made for the existing structure and defects, and a local preheating device before repair welding repair of a steel casting is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides a local preheating device before repair welding repair of a steel casting, which aims to solve the problems that the heating angle of a heating spray gun of the existing casting preheating device is fixed, the part needing repair welding cannot be well preheated, in particular, the preheating effect of the part such as a crack and a gap is poor, the quality of the subsequent repair welding of the part cannot reach the standard, and the practicability is not high.

The invention discloses a local preheating device before repair welding repair of a steel casting, which has the purpose and the effect achieved by the following specific technical means:

a local preheating device before repair welding repair of a steel casting comprises a working platform, an adjusting rod, a double-stroke mechanism, a rotating ring, a rotating rod, a heating spray gun, a driving motor a and a driving motor b; the top surface of the working platform is rotatably connected with a carrying disc; the adjusting rod is rotatably connected to one side of the top surface of the working platform; the double-stroke mechanism consists of a fixed bracket, a stroke bracket and an electric push rod; the stroke support is inserted into the fixed support; the bottom end of the electric push rod is fixedly connected inside the fixed support; the rotating ring is inserted in the connecting block; the rotating rod is rotatably connected to the top end of the rotating ring; the heating spray gun is screwed and fixed on the rod body of the rotating rod through screws, and an air inlet port of the heating spray gun is connected with an external fuel pipeline through an air pipe; the driving motor a is screwed and fixed on the side surface of the connecting block through a screw; and the driving motor b is screwed and fixed at the top of the mounting plate in the rotating ring through a screw, and the electric push rod, the driving motor a and the driving motor b are electrically connected with an external power supply and the control switch.

Furthermore, the top of the rod body of the rotating rod is provided with a transverse gear, and the teeth of the transverse gear are meshed with the teeth of a driving gear at one end of the rotating rod of the driving motor b for transmission.

Furthermore, the shape of the ring body of the rotating ring is arc-shaped, a longitudinal rack is arranged on the outer side face of the ring body of the rotating ring, and the gear teeth of the longitudinal rack are meshed with the gear teeth of a driving gear at one end of a rotating rod of the driving motor a for transmission.

Furthermore, two double-stroke mechanisms are arranged, one double-stroke mechanism is longitudinally arranged on the side face of the working platform through a fixing support, the fixing support of the other double-stroke mechanism is transversely arranged at the top of the longitudinal double-stroke mechanism stroke support, and the connecting block is screwed and fixed at one end of the stroke support of the transversely arranged double-stroke mechanism through a screw.

Further, the ring body both sides of swivel becket are equipped with curved constant head tank, and the outer end inside of connecting block is equipped with the locating piece, and the block shape of locating piece is the arc, and the locating piece is pegged graft in the inside of constant head tank.

Furthermore, the cross-sectional shape of fixed bolster is "U" shape design, and the inside track groove that is equipped with of bottom side lever of fixed bolster, and the bottom of stroke support is equipped with the track piece, and the cross-sectional shape of track piece is "T" shape, and the track piece is pegged graft in the inside in track groove.

Furthermore, the top surface of the stroke support is provided with a stroke rack, a fixed rack is arranged inside a transverse rod of the fixed support, which is located on the opposite side of the stroke support, the electric push rod is connected with a stroke gear in a rotating mode, and the two sides of the stroke gear are respectively in meshing transmission with the stroke rack and the teeth of the fixed rack.

Furthermore, the bottom parts of the carrying disc and the adjusting rod are provided with transmission chain wheels, and the carrying disc is in transmission connection with the transmission chain wheels at the bottom parts of the adjusting rod through a transmission chain.

Compared with the prior art, the invention has the following beneficial effects:

when the device dwang and swivel becket rotate, can change the biax injection angle that heats the spray gun to can be better preheat the repair welding position to the foundry goods different conditions, and two double-stroke mechanisms can change top heating welder's use height and length, can preheat different positions of foundry goods under the mating reaction with rotatable year thing dish, preheat effectually, improved the device's practicality and flexibility.

Firstly, when driving motor a rotated, driving motor a's driving gear can drive the swivel becket through vertical rack and rotate to change the fore-and-aft injection heating angle of heating spray gun, when driving motor b rotated, driving motor b's driving gear can drive the dwang through horizontal gear and rotate, thereby change the heating angle that the heating spray gun transversely sprayed, can adapt to the soldering position of answering different situations and preheat, improved the device's flexibility and practicality.

Secondly, the electric putter of two stroke mechanism is when flexible, the fixed rack is fixed state, the stroke gear at electric putter top rotates under the effect of fixed rack, thereby the stroke gear passes through the inside that the stroke rack drove the stroke support and stretches out or retract the fixed bolster, and the flexible stroke of stroke support is electric putter's elongation and the rotation girth of stroke gear, make the occupation space of two stroke mechanism still less, flexible limit is bigger, it is more convenient to use, and the flexible use height and the length that can change top heating welder of two stroke mechanism stroke supports, can preheat different positions of foundry goods under the mating reaction with rotatable year thing dish, it is effectual to preheat, the adaptability and the practicality of the device have been improved.

Moreover, the track block at the bottom of the stroke support can be limited by the track groove to move a track, and the positioning groove of the rotating ring can be fixed by the positioning block to rotate the track and the stroke, so that the phenomenon that the device is blocked and fails due to deflection and distortion of the stroke support and the rotating ring in the moving or rotating process can be avoided, and the stability of the device is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the rear side of fig. 1 according to the present invention.

Fig. 3 is a schematic structural diagram of the interior of the work platform of the present invention.

Fig. 4 is a schematic view of the installation structure of the rotating ring and the rotating lever according to the present invention.

Fig. 5 is a schematic view of the internal structure of the double stroke mechanism of the present invention.

FIG. 6 is a schematic view showing the structure of the present invention after changing the angle and position of the heating lances when heating the casting.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a working platform; 2. a carrying tray; 3. adjusting a rod; 4. a double-stroke mechanism; 5. connecting blocks; 6. a rotating ring; 7. rotating the rod; 8. heating the spray gun; 9. driving a motor a; 10. a drive motor b; 401. fixing a bracket; 402. a travel bracket; 403. an electric push rod; 4011. a track groove; 4012. fixing a rack; 4021. a track block; 4022. a travel rack; 4031. a stroke gear; 501. positioning blocks; 601. a longitudinal rack; 602. positioning a groove; 701. a transverse gear.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 6:

the invention provides a local preheating device before repair welding repair of a steel casting, which comprises a working platform 1, an adjusting rod 3, a double-stroke mechanism 4, a rotating ring 6, a rotating rod 7, a heating spray gun 8, a driving motor a9 and a driving motor b10, wherein the adjusting rod 3 is fixedly connected with the working platform; the top surface of the working platform 1 is rotatably connected with a carrying disc 2; the transmission chain wheels are arranged at the bottoms of the object carrying disc 2 and the adjusting rod 3, and the transmission chain wheels at the bottoms of the object carrying disc 2 and the adjusting rod 3 are in transmission connection through the transmission chain; the adjusting rod 3 is rotatably connected to one side of the top surface of the working platform 1; the double-stroke mechanism 4 consists of a fixed bracket 401, a stroke bracket 402 and an electric push rod 403; the stroke bracket 402 is inserted into the fixed bracket 401; the top surface of the stroke support 402 is provided with a stroke rack 4022, the fixed rack 401 is provided with a fixed rack 4012 inside the cross bar positioned at the opposite side of the stroke support 402, the electric push rod 403 is rotatably connected with a stroke gear 4031, and the two sides of the stroke gear 4031 are respectively meshed with the stroke rack 4022 and the fixed rack 4012 for transmission, the design ensures that when the electric push rod 403 of the double-stroke mechanism 4 extends and retracts, the fixed rack 4012 is in a fixed state, the stroke gear 4031 on the top of the electric push rod 403 rotates under the action of the fixed rack 4012, so that the stroke gear 4031 drives the stroke bracket 402 to extend or retract into the inner part of the fixed bracket 401 through the stroke rack 4022, and the telescopic stroke of the stroke support 402 is the elongation of the electric push rod 403 and the rotation circumference of the stroke gear 4031, the double-stroke mechanism 4 occupies less space, has larger telescopic limit and more convenient use, and improves the adaptability of the device; the bottom end of the electric push rod 403 is fixedly connected inside the fixed bracket 401; the rotating ring 6 is inserted in the connecting block 5; the arc-shaped positioning grooves 602 are formed in two sides of the ring body of the rotating ring 6, the positioning blocks 501 are arranged in the outer end of the connecting block 5, the block bodies of the positioning blocks 501 are arc-shaped, and the positioning blocks 501 are inserted in the positioning grooves 602; the rotating rod 7 is rotatably connected to the top end of the rotating ring 6; the heating spray gun 8 is screwed and fixed on the rod body of the rotating rod 7 through a screw, and an air inlet port of the heating spray gun 8 is connected with an external fuel pipeline through an air pipe; the driving motor a9 is screwed and fixed on the side surface of the connecting block 5 through a screw; the driving motor b10 is screwed and fixed on the top of the mounting plate inside the rotating ring 6 through screws, and the electric push rod 403, the driving motor a9 and the driving motor b10 are electrically connected with an external power supply and a control switch.

Wherein, the body of rod top of dwang 7 is equipped with transverse gear 701, and the teeth of a cogwheel of transverse gear 701 and the teeth of a cogwheel interlock transmission of driving motor b10 bull stick one end driving gear, this design makes when driving motor b10 rotates, driving motor b 10's driving gear can drive dwang 7 through transverse gear 701 and rotate, thereby change the heating angle of 8 horizontal injections of heating spray gun, can adapt to the soldering position of different situation and preheat, the adaptability of the device has been improved.

Wherein, the annular body shape of swivel becket 6 is the arc design, and the annular body lateral surface of swivel becket 6 is equipped with vertical rack 601, the teeth of a cogwheel of vertical rack 601 and the teeth of a cogwheel interlock transmission of driving motor a9 bull stick one end driving gear, this design makes when driving motor a9 rotates, driving motor a 9's driving gear can drive swivel becket 6 through vertical rack 601 and rotate, thereby change the vertical injection heating angle of heating spray gun, can adapt to preheat the soldering position of different situation, the adaptability of the device has been improved.

Wherein, two stroke mechanism 4 are equipped with two, and one of them two stroke mechanism 4 vertically installs in work platform 1's side through fixed bolster 401, and the fixed bolster 401 of another two stroke mechanism 4 transversely installs at the top of fore-and-aft two stroke mechanism 4 stroke support 402, connecting block 5 connects the one end of fixing at the stroke support 402 of two stroke mechanism 4 of transversely installing through the screw twist, this design makes two stroke mechanism 4 can change top heating welder 8's use height and length, can preheat different positions of foundry goods under the mating reaction with rotatable year thing dish 2, it is effectual to preheat, the practicality and the flexibility of the device have been improved.

Wherein, the cross sectional shape of fixed bolster 401 is "U" shape design, and the inside track groove 4011 that is equipped with of bottom side lever of fixed bolster 401, the bottom of stroke support 402 is equipped with track piece 4021, and the cross sectional shape of track piece 4021 is "T" shape, track piece 4021 pegs graft in track groove 4011's inside, this design makes stroke support 402 bottom track piece 4021 can be by the restriction of track groove 4011 removal orbit, and make stroke support 402 can not appear crooked in the removal process, the distortion causes the phenomenon of device card dead failure to take place, the stability of the device has been improved.

The specific use mode and function of the embodiment are as follows:

in the invention, a casting to be welded and repaired is placed at the top of an object carrying disc 2, an air inlet interface of a heating spray gun 8 is connected with an external fuel pipeline through an air pipe, the heating spray gun 8 is ignited, the casting can be preheated at the moment, the part of the casting to be welded and repaired is aligned to the heating spray gun 8 by rotating an adjusting rod 3, the adjusting rod 3 can drive the object carrying disc 2 to rotate when the adjusting rod 3 is rotated, so that the heating part of the casting by the heating spray gun 8 is changed, different parts of the casting can be heated, the using height and the length of a top heating spray gun 8 can be changed by controlling the extension and retraction of an electric push rod 403 of two double-stroke mechanisms 4, different parts of the casting can be preheated under the coordination action of the rotatable object carrying disc 2, the preheating effect is good, when an electric push rod 403 of the double-stroke mechanisms 4 is extended and retracted, a fixed rack 4012 is in a fixed state, a stroke gear 4031 at the, therefore, the stroke gear 4031 drives the stroke support 402 to extend out or retract into the fixed support 401 through the stroke rack 4022, a track block 4021 at the bottom of the stroke support 402 can be limited by the track groove 4011 to move a track, the stroke support 402 cannot be skewed or twisted in the moving process to cause the device to be stuck and fail, the telescopic stroke of the stroke support 402 is the elongation of the electric push rod 403 and the rotating perimeter of the stroke gear 4031, so that the double-stroke mechanism 4 occupies less space and has larger telescopic limit and more convenient use, when the heating angle of the heating spray gun 8 needs to be changed, the longitudinal and transverse spraying angles of the heating spray gun 8 can be changed only by switching on the power supply of the driving motor a9 or the driving motor b10 through a control switch, when the driving motor a9 rotates, the driving gear of the driving motor a9 can drive the rotating ring 6 to rotate through the longitudinal rack 601, thereby change the fore-and-aft injection heating angle of heating spray gun, the constant head tank 602 of swivel becket 6 can be by fixed rotation orbit and stroke of locating piece 501, make swivel becket 6 can not appear crooked in the rotation process, the distortion causes the dead phenomenon of inefficacy of device card to take place, when driving motor b10 rotates, driving motor b 10's driving gear can drive dwang 7 through transverse gear 701 and rotate, thereby change the heating angle of 8 transverse injection of heating spray gun, can adapt to preheat the soldering part of different situation, it is effectual to preheat.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a local preheating device before steel casting repair welding restores which characterized in that: the device comprises a working platform (1), an adjusting rod (3), a double-stroke mechanism (4), a rotating ring (6), a rotating rod (7), a heating spray gun (8), a driving motor a (9) and a driving motor b (10); the top surface of the working platform (1) is rotatably connected with a carrying disc (2); the adjusting rod (3) is rotatably connected to one side of the top surface of the working platform (1); the double-stroke mechanism (4) consists of a fixed bracket (401), a stroke bracket (402) and an electric push rod (403); the stroke support (402) is inserted into the fixed support (401); the bottom end of the electric push rod (403) is fixedly connected to the inside of the fixed support (401); the rotating ring (6) is inserted in the connecting block (5); the rotating rod (7) is rotatably connected to the top end of the rotating ring (6); the heating spray gun (8) is screwed and fixed on the rod body of the rotating rod (7) through a screw, and an air inlet port of the heating spray gun (8) is connected with an external fuel pipeline through an air pipe; the driving motor a (9) is screwed and fixed on the side surface of the connecting block (5) through a screw; and the driving motor b (10) is screwed and fixed at the top of the mounting plate in the rotating ring (6) through screws, and the electric push rod (403), the driving motor a (9) and the driving motor b (10) are electrically connected with an external power supply and the control switch.

2. The steel casting weld repair pre-local preheating device according to claim 1, characterized in that: the top of the rod body of dwang (7) is equipped with transverse gear (701), and the teeth of a cogwheel of transverse gear (701) and the teeth of a cogwheel interlock transmission of driving gear of driving motor b (10) bull stick one end.

3. The steel casting weld repair pre-local preheating device according to claim 1, characterized in that: the ring body shape of the rotating ring (6) is arc-shaped, a longitudinal rack (601) is arranged on the outer side face of the ring body of the rotating ring (6), and the gear teeth of the longitudinal rack (601) are meshed with the gear teeth of a driving gear at one end of a rotating rod of a driving motor a (9) for transmission.

4. The steel casting weld repair pre-local preheating device according to claim 1, characterized in that: the two double-stroke mechanisms (4) are arranged, one double-stroke mechanism (4) is longitudinally arranged on the side face of the working platform (1) through a fixing support (401), the fixing support (401) of the other double-stroke mechanism (4) is transversely arranged at the top of the longitudinal double-stroke mechanism (4) stroke support (402), and the connecting block (5) is screwed and fixed at one end of the stroke support (402) of the transversely arranged double-stroke mechanism (4) through a screw.

5. The steel casting weld repair pre-local preheating device according to claim 1, characterized in that: the ring body both sides of swivel becket (6) are equipped with curved constant head tank (602), and the outside of connecting block (5) is inside to be equipped with locating piece (501), and the block shape of locating piece (501) is the arc, and locating piece (501) are pegged graft in the inside of constant head tank (602).

6. The steel casting weld repair pre-local preheating device according to claim 1, characterized in that: the cross sectional shape of fixed bolster (401) is "U" shape design, and the inside track groove (4011) that is equipped with of bottom side pole of fixed bolster (401), and the bottom of stroke support (402) is equipped with track piece (4021), and the cross sectional shape of track piece (4021) is "T" shape, and track piece (4021) pegs graft in the inside of track groove (4011).

7. The steel casting weld repair pre-local preheating device according to claim 1, characterized in that: the top surface of the stroke support (402) is provided with a stroke rack (4022), the fixed support (401) is arranged inside a cross bar on the opposite side of the stroke support (402) and is provided with a fixed rack (4012), the electric push rod (403) rotates to be connected with a stroke gear (4031), and the two sides of the stroke gear (4031) are respectively in meshing transmission with the stroke rack (4022) and the gear teeth of the fixed rack (4012).

8. The steel casting weld repair pre-local preheating device according to claim 1, characterized in that: the bottom of the carrying plate (2) and the bottom of the adjusting rod (3) are provided with transmission chain wheels, and the carrying plate (2) is in transmission connection with the transmission chain wheels at the bottom of the adjusting rod (3) through a transmission chain.