A hydraulic valve seat welding repair device

Abstract

The present invention discloses a welding repair device for a hydraulic valve seat, which includes a repair mounting member, on which an axial adjustment member is installed for adjusting the spot welding position; a weld spot trimming member is installed on the axial adjustment member; a power connection control member is installed on the axial adjustment member; a spot welding time control member is installed on the power connection control member, and the spot welding time control member is used to control the spot welding time. It can be more convenient for workers to control the spot welding time. Cooperating with the power connection control member, it can automatically control the heating block to scrape and level the protrusion of the weld spot, ensuring the welding flatness, and can achieve automatic control and timely scraping to avoid untimely scraping by manual control operation. It solves the problems that the existing welding repair device for hydraulic valve seats is not convenient for automatically controlling the direct scraping and repairing of the molten pool after spot welding for heat preservation, nor for automatically controlling the spot welding time, and the manual hand-held operation of spot welding is not accurate enough.

Description

Technical Field

[0001] The present invention relates to the technical field of welding repair, and in particular to a welding repair device for a hydraulic valve seat. Background Technique

[0002] In actual hydraulic valves, hydraulic butterfly valves are widely used. The flatness of the inner wall of the valve seat directly affects its sealing performance. During the opening and closing process of the butterfly plate, it continuously rubs against the sealing surface of the valve seat. Even for valve seats with rubber gaskets in some parts, long-term use will cause surface scratches or wear. Coupled with the infiltration of corrosive media into the inner wall of the valve seat, media containing suspended particles or flowing at high speed will directly scour the surface of the valve seat, forming local pits or pockmarks. Currently, the welding repair device for hydraulic valve seats usually uses a hand-held welding torch for spot welding, and then grinds and levels the raised parts after spot welding. It is not convenient to automatically control the direct scraping and repairing of the molten pool for heat preservation after spot welding. The subsequent cumbersome manual grinding method is time-consuming and laborious. At the same time, it is easy to expand the worn area during grinding, causing secondary damage to the valve seat. At the same time, it is not convenient to automatically control the spot welding time. Manual hand-held operation for spot welding is not accurate enough, which is likely to cause problems such as too large a spot welding area. At the same time, it is not convenient to visually detect and prompt the flatness of the inner wall repair of the valve seat. Cumbersome manual inspection will reduce the repair efficiency.

[0003] Therefore, we propose a welding repair device for a hydraulic valve seat. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding repair device for a hydraulic valve seat, so as to solve the problems in the above-mentioned background technique that the current welding repair device for hydraulic valve seats is not convenient to automatically control the direct scraping and repairing of the molten pool for heat preservation after spot welding, nor is it convenient to automatically control the spot welding time, and manual hand-held operation for spot welding is not accurate enough.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A welding repair device for a hydraulic valve seat, including a repair installation part, an axial adjustment part is installed on the repair installation part, and the axial adjustment part is used to adjust the spot welding position; a spot welding trimming part is installed on the axial adjustment part; a power connection control part is installed on the axial adjustment part; a spot welding time control part is installed on the power connection control part; the spot welding time control part is used to control the spot welding time; a prompt part is installed on the spot welding trimming part; the prompt part is used to prompt the trimming flatness; the repair installation part includes: a flange docking plate and a driving motor, a circle of through holes are opened on the flange docking plate; a circle of bolts are provided on the flange docking plate; the bolts on the flange docking plate are used to connect to the flange of the butterfly valve seat; the driving motor is fixedly installed on the flange docking plate through a bracket; a through hole is provided in the middle of the flange docking plate.

[0006] Preferably, the repair and installation part further includes: a coupling shaft, which is fixedly installed on the output shaft of the driving motor; the coupling shaft is of a hexagonal column structure; a rotating groove is provided at the end of the coupling shaft.

[0007] Preferably, the axial adjustment part includes: a sleeve, a slewing frame, a welding torch holder, an adjusting screw and a slewing block. The sleeve is slidably sleeved in the middle of the flange docking plate; a coupling shaft is slidably inserted into the sleeve; a slewing frame is fixedly installed on the sleeve; a welding torch holder is fixedly installed on the slewing frame by bolts, and a welding torch is installed on the welding torch holder; an adjusting screw is threadedly connected to the sleeve, and the end of the adjusting screw is rotatably installed in the rotating groove on the coupling shaft; a slewing block is fixedly installed on the top of the slewing frame by bolts; the slewing block is used for sliding and fitting on the inner side of the valve seat; the adjusting screw is used for driving the sleeve to displace; a handwheel is provided at the end of the adjusting screw.

[0008] Preferably, the solder joint trimming part includes: a trimming block and an observation groove. The trimming block is fixedly installed on the slewing frame by bolts, and an observation groove is provided on the trimming block; the observation groove is used for observing the position of the welding wire; the bottom of the trimming block is attached to the inner side of the valve seat.

[0009] Preferably, the solder joint trimming part further includes: a heating block, which is a semi-circular tile; the heating block is fixedly installed inside the trimming block; the welding torch welding wire is located inside the heating block; the bottom of the heating block is attached to the inner side of the valve seat; the heating block is used for scraping the solder joint protrusion; an electric heating wire connected to an external power supply is provided inside the heating block.

[0010] Preferably, the power connection control part includes: a control mounting frame, a warning light, a power connection mounting cylinder and a power connection elastic sheet. The control mounting frame is fixedly installed on the slewing frame; a power connection mounting cylinder is fixedly installed on the control mounting frame; the adjusting screw is located inside the control mounting frame; a warning light is fixedly installed on the control mounting frame; the warning light is sleeved on the power connection mounting cylinder; a power connection elastic sheet is fixedly installed inside the power connection mounting cylinder; the power connection elastic sheet is an elastic conductor steel sheet; a thread is provided inside the control mounting frame; a circle of lamp beads is provided on the warning light.

[0011] Preferably, the power connection control part further includes: a spot welding elastic sheet and a rotating power connection sheet. One end of the spot welding elastic sheet is fixedly installed inside the control mounting frame; one end of the rotating power connection sheet is fixedly installed inside the control mounting frame; the rotating power connection sheet is an elastic conductor steel sheet; a welding torch switch is provided at the bottom of the spot welding elastic sheet, and the end of the welding torch switch at the bottom of the spot welding elastic sheet is attached to the inner side of the power connection mounting cylinder.

[0012] Preferably, the spot welding time control member includes: a control handle, a constant speed motor, an insulating block, a power connection cam block, and a power-on switch. The control handle is threadedly connected to the power connection mounting cylinder; a constant speed motor is fixedly installed inside the control handle, and an insulating block is fixedly installed on the output shaft of the constant speed motor; a power connection cam block is fixedly installed on the insulating block, and the power connection cam block is of a cam structure; a power-on switch is fixedly installed at the tail of the control handle, and the constant speed motor is electrically connected to the power-on switch; the power connection cam block is a conductor; the end of the power connection cam block is attached to the power connection elastic sheet; the power connection cam block is used to rotate and fit the spot welding elastic sheet and the rotating power connection sheet; the spot welding elastic sheet and the rotating power connection sheet are arranged in a staggered manner. The power connection cam block first contacts and presses the spot welding elastic sheet, and then contacts the rotating power connection sheet. When the power connection cam block rotates, it first separates from the spot welding elastic sheet and then separates from the rotating power connection sheet; the welding torch switch at the bottom of the spot welding elastic sheet is electrically connected to the welding torch, and the power connection elastic sheet, the rotating power connection sheet, and the driving motor are connected in series to the power supply.

[0013] Preferably, the prompting member includes: a fitting elastic sheet and a contact point sheet. A row of fitting elastic sheets is fixedly installed at the tail of the trimming block, and there are gaps between the row of fitting elastic sheets; contact point sheets are respectively fixedly installed on the row of fitting elastic sheets; the fitting elastic sheets are elastically fitted inside the valve seat.

[0014] Preferably, the prompting member further includes: a fixing sheet. A row of fixing sheets is fixedly installed on the trimming block; there are gaps between the row of fixing sheets, and the ends of the row of fixing sheets are respectively attached to the row of fitting elastic sheets; a circle of lamp beads on the prompting lamp is respectively connected in series to the power supply with the row of contact point sheets and the fixing sheets.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention adopts a rotatable solder joint trimming member, which can quickly rotate to assist in scraping and leveling the raised part of the solder joint molten pool when spot welding and repairing the inner wall of the valve seat, can assist in leveling the solder joints at the defective parts, and avoid the problems that it is easy to over-grind the solder joints during the subsequent grinding operation by the staff and the handheld grinding machine is easy to shake, causing accidental injury to the inner wall of the valve seat other than the solder joints, and the operation difficulty is relatively high. It can avoid secondary damage to the inner wall of the valve seat. This structure uses the method of directly scraping the welded molten pool, and the heating block can assist in heat preservation of the molten pool, which is convenient for directly scraping off the redundant protruding part during subsequent movement, and then directly polishing, saving the repair time.

[0017] By using a spot welding time control component in conjunction with a power connection control component, it is more convenient for workers to control the spot welding time. Insufficient welding time may result in an insufficient molten pool depth, unable to fully fuse the metal at the edge of the pit, forming false welding or incomplete fusion defects, reducing the bonding strength of the repair layer. Excessive welding time is likely to cause an overly large molten pool. The spot welding time control component can automatically control the spot welding time. In conjunction with the power connection control component, it can automatically control the heating block to scrape and flatten the protrusion of the solder joint, ensuring the welding flatness, and can achieve automatic control and timely scraping to avoid the situation where manual control scraping is not timely and the molten pool cannot be scraped flat if it has solidified.

[0018] By using a prompting component, it is convenient for workers to more intuitively understand the flatness of the inner wall of the valve seat. This structure can avoid the situation in traditional grinding or spot welding repair work where workers need to frequently measure the flatness, which is time-consuming and laborious. This structure can, through the method of flatness prompting, only require workers to conduct more detailed measurements after observing the lighting prompts of a circle of lamp beads on the prompting lamp, improving the repair efficiency and being more labor-saving and direct. Brief Description of the Drawings

[0019] Figure 1 Overall structural schematic diagram of a hydraulic valve seat welding repair device of the present invention;

[0020] Figure 2 Rear structural schematic diagram of a hydraulic valve seat welding repair device of the present invention;

[0021] Figure 3 Internal structural cross-sectional view of a hydraulic valve seat welding repair device of the present invention;

[0022] Figure 4 Structural schematic diagram of the repair and installation component of the present invention;

[0023] Figure 5 Structural schematic diagram of the axial adjustment component of the present invention;

[0024] Figure 6 Structural schematic diagram of the position of the constant-speed motor of the present invention;

[0025] Figure 7 For the present invention Figure 5 Enlarged view of the structure in area B;

[0026] Figure 8 Structural schematic diagram of the power connection control component of the present invention;

[0027] Figure 9 Structural schematic diagram of the spot welding time control component of the present invention;

[0028] Figure 10 Structural schematic diagram of the prompting component of the present invention.

[0029] In the figure: 1. Repair installation part; 101. Flange docking plate; 102. Driving motor; 103. Coupling; 2. Axial adjustment part; 201. Sleeve; 202. Rotary frame; 203. Welding torch holder; 204. Distance adjustment screw; 205. Rotary block; 3. Weld point trimming part; 301. Trimming block; 3011. Observation groove; 302. Heating block; 4. Power connection control part; 401. Control mounting frame; 4011. Indicator light; 402. Power connection mounting cylinder; 403. Power connection elastic piece; 404. Spot welding elastic piece; 4041. Rotary power connection piece; 5. Spot welding time control part; 501. Control handle; 502. Constant speed motor; 5021. Insulating block; 503. Power connection cam block; 504. Power on switch; 6. Prompt part; 601. Fitting elastic piece; 6011. Contact piece; 602. Fixed piece. Specific implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Please refer to Figures 1 to 10 as shown:

[0032] The present invention provides a technical solution: a hydraulic valve seat welding repair device, including a repair installation part 1, an axial adjustment part 2 is installed on the repair installation part 1, and the axial adjustment part 2 is used to adjust the spot welding position; a weld point trimming part 3 is installed on the axial adjustment part 2; a power connection control part 4 is installed on the axial adjustment part 2; a spot welding time control part 5 is installed on the power connection control part 4; the spot welding time control part 5 is used to control the spot welding time; a prompt part 6 is installed on the weld point trimming part 3; the prompt part 6 is used to prompt the trimming flatness; the repair installation part 1 includes: a flange docking plate 101 and a driving motor 102, a circle of through holes are opened on the flange docking plate 101; a circle of bolts are provided on the flange docking plate 101; the bolts on the flange docking plate 101 are used to connect to the flange of the butterfly valve seat; the driving motor 102 is fixedly installed on the flange docking plate 101 through a bracket; a through hole is provided in the middle of the flange docking plate 101.

[0033] Among them, the repair and installation part 1 further includes: a coupling 103, which is fixedly installed on the output shaft of the driving motor 102; the coupling 103 is a hexagonal column structure; a rotating groove is provided at the end of the coupling 103; the axial adjustment part 2 includes: a sleeve 201, a rotary frame 202, a welding torch holder 203, an adjusting screw 204 and a rotary block 205. The sleeve 201 is slidably sleeved in the middle of the flange docking plate 101; the coupling 103 is slidably inserted on the sleeve 201; the rotary frame 202 is fixedly installed on the sleeve 201; the welding torch holder 203 is fixedly installed on the rotary frame 202 by bolts, and a welding torch is installed on the welding torch holder 203; the adjusting screw 204 is threadedly connected to the sleeve 201, and the end of the adjusting screw 204 is rotatably installed in the rotating groove on the coupling 103; the rotary block 205 is fixedly installed on the top of the rotary frame 202 by bolts; the rotary block 205 is used to slidably fit on the inner side of the valve seat; the adjusting screw 204 is used to drive the sleeve 201 to displace; a handwheel is provided at the end of the adjusting screw 204; the solder joint trimming part 3 includes: a trimming block 301 and an observation groove 3011. The trimming block 301 is fixedly installed on the rotary frame 202 by bolts, and the observation groove 3011 is opened on the trimming block 301; the observation groove 3011 is used to observe the position of the welding wire; the bottom of the trimming block 301 is attached to the inner side of the valve seat; the solder joint trimming part 3 further includes: a heating block 302, the heating block 302 is a semi-circular tile; the heating block 302 is fixedly installed on the inner side of the trimming block 301; the welding torch welding wire is located inside the heating block 302; the bottom of the heating block 302 is attached to the inner side of the valve seat; the heating block 302 is used to scrape the solder joint protrusion; an electric heating wire connected to an external power supply is provided inside the heating block 302; the trimming block 301 and the rotary block 205 are connected by bolts, which is convenient for disassembly and replacement. The axial adjustment part 2 is used in cooperation with the repair and installation part 1, which can be used for positioning inside the butterfly valve, and the subsequent welding repair is more stable, improving the welding quality. At the same time, this structure uses the rotatable solder joint trimming part 3 to quickly rotate and assist in scraping the protrusion of the solder joint molten pool when spot welding and repairing the inner wall of the valve seat, which can assist in leveling the solder joints at the defective parts, avoiding the problems that it is easy to over-grind the solder joints when the subsequent workers perform grinding operations and the grinding machine is easy to shake and cause accidental injury to the inner wall of the valve seat other than the solder joints, and the operation difficulty is relatively high, and avoiding secondary damage to the inner wall of the valve seat. This structure uses the method of directly scraping the welded molten pool, and the heating block 302 can assist in heat preservation of the molten pool, which is convenient for directly scraping off the excess protrusion during subsequent movement, and then directly polishing, saving the repair time, and at the same time, the surface forming effect is better. The structure is simple and reasonable, more suitable for repair work in narrow spaces, with flexible operation. The bolts on the flange docking plate 101 are used to connect to the flange of the butterfly valve seat. At this time, the adjusting screw 204 can be rotated to drive the sleeve 201 to move, driving the rotary frame 202 to adjust the position, and cooperating with directly manually rotating the rotary frame 202 to drive the welding torch to align with the repair area.

[0034] Among them, the power connection control member 4 includes: a control mounting bracket 401, a warning light 4011, a power connection mounting cylinder 402, and a power connection elastic sheet 403. The control mounting bracket 401 is fixedly installed on the slewing bracket 202; the power connection mounting cylinder 402 is fixedly installed on the control mounting bracket 401; the distance adjusting screw 204 is located inside the control mounting bracket 401; the warning light 4011 is fixedly installed on the control mounting bracket 401; the warning light 4011 is sleeved on the power connection mounting cylinder 402; the power connection elastic sheet 403 is fixedly installed inside the power connection mounting cylinder 402; the power connection elastic sheet 403 is an elastic conductor steel sheet; there is a thread inside the control mounting bracket 401; there is a circle of lamp beads on the warning light 4011; the power connection control member 4 further includes: a spot welding elastic sheet 404 and a rotary power connection sheet 4041. One end of the spot welding elastic sheet 404 is fixedly installed inside the control mounting bracket 401; one end of the rotary power connection sheet 4041 is fixedly installed inside the control mounting bracket 401; the rotary power connection sheet 4041 is an elastic conductor steel sheet; there is a welding torch switch at the bottom of the spot welding elastic sheet 404, and the end of the welding torch switch at the bottom of the spot welding elastic sheet 404 is attached to the inside of the power connection mounting cylinder 402; the spot welding time control member 5 includes: a control handle 501, a constant speed motor 502, an insulating block 5021, a power connection cam block 503, and a power-on switch 504. The control handle 501 is threadedly connected to the power connection mounting cylinder 402; the constant speed motor 502 is fixedly installed inside the control handle 501, and an insulating block 5021 is fixedly installed on the output shaft of the constant speed motor 502; the power connection cam block 503 is fixedly installed on the insulating block 5021, and the power connection cam block 503 is a cam structure; the power-on switch 504 is fixedly installed at the tail of the control handle 501, and the constant speed motor 502 is electrically connected to the power-on switch 504; the power connection cam block 503 is a conductor; the end of the power connection cam block 503 is attached to the power connection elastic sheet 403; the power connection cam block 503 is used to rotate and fit the spot welding elastic sheet 404 and the rotary power connection sheet 4041; the spot welding elastic sheet 404 and the rotary power connection sheet 4041 are arranged in a staggered manner, and the staggering distance is set according to the required size of the spot welding molten pool. The power connection cam block 503 first contacts and presses the spot welding elastic sheet 404, and then contacts the rotary power connection sheet 4041. When the power connection cam block 503 rotates, it first separates from the spot welding elastic sheet 404 and then separates from the rotary power connection sheet 4041;The welding torch switch at the bottom of the spot welding elastic piece 404 is electrically connected to the welding torch. The power-on elastic piece 403, the rotary power-on piece 4041, and the drive motor 102 are connected in series to the power supply. By using the spot welding time control part 5 in cooperation with the power-on control part 4, it is more convenient for the staff to control the spot welding time. Insufficient welding time may result in insufficient molten pool depth, unable to completely fuse the metal at the edge of the pit, forming false welding or lack of fusion defects, reducing the bonding strength of the repair layer. Excessive welding time is likely to cause the molten pool to be too large, and at the same time, it will coarsen the grains of the valve seat matrix metal, expand the heat-affected zone, and may cause local deformation or microcracks. This structure can automatically control the spot welding time by using the spot welding time control part 5 to avoid excessive time and ensure the quality of the molten pool. For larger defects, multiple spot welds can be superimposed. At the same time, in cooperation with the power-on control part 4, it can automatically control the heating block 302 to scrape and flatten the protrusion of the solder joint to ensure the welding flatness, and can achieve automatic control and timely scraping to avoid untimely scraping by manual control. If the molten pool has solidified, it cannot be scraped flat and will get stuck. By using the fact that when the power-on cam block 503 rotates, it first separates from the spot welding elastic piece 404 and then separates from the rotary power-on piece 4041, it is ensured that when spot welding stops, the heating block 302 can still move a certain distance to avoid the residue of the molten material sticking to the inner wall of the valve seat. By adopting a method of driving and controlling the welding torch switch with a uniform constant-speed motor 502, the spot welding time is guaranteed, and at the same time, it is convenient to scrape and flatten the solder joint in time. The structure is simple and efficient, improving the repair quality of the inner wall of the valve seat.;

[0035] Embodiment 2, on the basis of Embodiment 1, the prompting part 6 includes: a fitting elastic piece 601 and a contact piece 6011. A row of fitting elastic pieces 601 is fixedly installed at the tail of the trimming block 301, and there are gaps between the row of fitting elastic pieces 601; contact pieces 6011 are respectively fixedly installed on the row of fitting elastic pieces 601; the fitting elastic piece 601 elastically fits on the inner side of the valve seat; the prompting part 6 further includes: a fixing piece 602, and a row of fixing pieces 602 is fixedly installed on the trimming block 301; there are gaps between the row of fixing pieces 602, and the ends of the row of fixing pieces 602 are respectively attached to the row of fitting elastic pieces 601; a circle of lamp beads on the indicating lamp 4011 is respectively connected in series to the power supply with the row of contact pieces 6011 and the fixing pieces 602. By using the prompting part 6, it is convenient for the staff to more intuitively understand the flatness of the inner wall of the valve seat. This structure can avoid the situation in traditional grinding or spot welding repair work where manual workers need to frequently measure the flatness, which is time-consuming and laborious. This structure can, through the method of flatness prompting, only require the staff to conduct more detailed measurement after observing the lighting prompt of the circle of lamp beads on the indicating lamp 4011, improving the repair efficiency, being more labor-saving and direct. The solder joint after scraping will cool immediately. Once the spot welding area still needs to be sunken, at this time, the fitting elastic piece 601 can elastically fit in the sunken area. At this time, the fitting elastic piece 601 can drive the contact piece 6011 and the fixing piece 602 to separate, and at this time, some of the lamp beads on the indicating lamp 4011 will go out or flash to prompt the defect.

[0036] Working principle of this embodiment: First, bolts on the flange docking plate 101 are used to connect to the butterfly valve seat flange. At this time, the distance-adjusting screw 204 can be rotated to drive the sleeve 201 to move, driving the slewing frame 202 to adjust the position. The slewing frame 202 can also be directly rotated manually to drive the welding torch to align with the repair area. Hold the control handle 501 and press the power-on switch 504. At this time, the power-on switch 504 can control the constant-speed motor 502 to drive the power connection cam block 503 to rotate at a constant speed. At this time, the power connection cam block 503 can sequentially squeeze the spot welding elastic piece 404 and the rotary power connection piece 4041. The spot welding elastic piece 404 is squeezed first, and the welding torch switch at the bottom of the spot welding elastic piece 404 is squeezed to control the welding torch to start welding. At the same time, as the power connection cam block 503 continues to rotate, it can fit the rotary power connection piece 4041. At this time, the drive motor 102 is powered on and starts to rotate, driving the slewing frame 202 to rotate. This process is very fast. With the heating block 302 heating and keeping warm, the heating block 302 at the bottom of the slewing frame 202 will scrape flat the protrusion at the spot welding of the welding torch, realizing automatic control. As the power connection cam block 503 rotates, the welding torch switch at the bottom of the spot welding elastic piece 404 can be released, and the welding torch can quickly stop welding. At the same time, as the power connection cam block 503 continues to rotate, it will also separate from the rotary power connection piece 4041. At this time, the drive motor 102 quickly cuts off the power and no longer continues to drive the heating block 302 to move. By using the fact that the power connection cam block 503 separates from the spot welding elastic piece 404 first and then from the rotary power connection piece 4041 when rotating, it is ensured that when the welding torch stops spot welding, the heating block 302 can still move a certain distance to avoid the molten material remaining and sticking to the inner wall of the valve seat. By adopting a method of using a constant-speed motor 502 to drive and control the welding torch switch, the spot welding time is guaranteed, and it is convenient to scrape flat the spot welding area in time. The structure is simple and efficient, improving the repair quality of the inner wall of the valve seat. At the same time, workers can directly use tools such as steel brushes to clean the attachments on the heating block 302; the spot welding area after scraping will cool immediately. As the trimming block 301 is driven to move, the slewing frame 202 can also be manually rotated to drive the trimming block 301 to slide around the inner wall of the valve seat, driving a row of fitting elastic pieces 601 to move. The end of the fitting elastic piece 601 can be attached to the inner wall of the valve seat. Once the spot welding area still needs to be recessed, the fitting elastic piece 601 can elastically fit in the recess. At this time, the fitting elastic piece 601 can drive the contact piece 6011 to separate from the fixed piece 602. At this time, some of the lamp beads on the indicator light 4011 will go out or flash. At this time, the worker can continue to perform spot welding repair, which can be intuitively prompted.

[0037] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic valve seat welding repair device, comprising a repair mounting member (1), and an axial adjustment member (2) is mounted on the repair mounting member (1), characterized in that: The axial adjustment member (2) is used to adjust the spot welding position; a welding point trimming member (3) is installed on the axial adjustment member (2); A power connection control member (4) is installed on the axial adjustment member (2); a spot welding time control member (5) is installed on the power connection control member (4); the spot welding time control member (5) is used to control the spot welding time; A prompting member (6) is installed on the welding point trimming member (3); the prompting member (6) is used to prompt the trimming flatness; The repair and installation member (1) includes: a flange docking plate (101) and a driving motor (102), a circle of through holes are opened on the flange docking plate (101); a circle of bolts are provided on the flange docking plate (101); the bolts on the flange docking plate (101) are used to connect to the butterfly valve seat flange; the driving motor (102) is fixedly installed on the flange docking plate (101) through a bracket; a through hole is provided in the middle of the flange docking plate (101).

2. The hydraulic valve seat welding repair device according to claim 1, characterized in that: The repair and installation member (1) further includes: a coupling shaft (103), the coupling shaft (103) is fixedly installed on the output shaft of the driving motor (102); the coupling shaft (103) is a hexagonal column structure; a rotating groove is provided at the end of the coupling shaft (103).

3. The hydraulic valve seat welding repair device according to claim 2, characterized in that: The axial adjustment member (2) includes: a sleeve (201), a rotary frame (202), a welding gun holder (203), an adjustment screw (204) and a rotary block (205), the sleeve (201) is slidably sleeved in the middle of the flange docking plate (101); the coupling shaft (103) is slidably inserted into the sleeve (201); the rotary frame (202) is fixedly installed on the sleeve (201); the welding gun holder (203) is fixedly installed on the rotary frame (202) through bolts, and a welding gun is installed on the welding gun holder (203); the adjustment screw (204) is threadedly connected to the sleeve (201), and the end of the adjustment screw (204) is rotatably installed in the rotating groove on the coupling shaft (103); the rotary block (205) is fixedly installed on the top of the rotary frame (202) through bolts; the rotary block (205) is used to slidably fit on the inner side of the valve seat; the adjustment screw (204) is used to drive the displacement of the sleeve (201); a handwheel is provided at the end of the adjustment screw (204).

4. A hydraulic valve seat welding repair device according to claim 3, characterized in that: The welding point trimming member (3) includes: a trimming block (301) and an observation groove (3011), the trimming block (301) is fixedly installed on the rotary frame (202) through bolts, and an observation groove (3011) is opened on the trimming block (301); the observation groove (3011) is used to observe the position of the welding wire; the bottom of the trimming block (301) is attached to the inner side of the valve seat.

5. A hydraulic valve seat welding repair device according to claim 4, characterized in that: The welding point trimming member (3) further includes: a heating block (302), the heating block (302) is a semi-circular tile; the heating block (302) is fixedly installed inside the trimming block (301); the welding gun wire is located inside the heating block (302); the bottom of the heating block (302) is attached to the inner side of the valve seat; the heating block (302) is used to scrape the welding point protrusion; an electric heating wire connected to an external power source is provided inside the heating block (302).

6. The hydraulic valve seat welding repair device according to claim 4, characterized in that: The power connection control member (4) includes: a control mounting bracket (401), a warning light (4011), a power connection mounting cylinder (402), and a power connection elastic piece (403). The control mounting bracket (401) is fixedly installed on the slewing bracket (202); a power connection mounting cylinder (402) is fixedly installed on the control mounting bracket (401); the distance adjustment screw (204) is located inside the control mounting bracket (401); a warning light (4011) is fixedly installed on the control mounting bracket (401); the warning light (4011) is sleeved on the power connection mounting cylinder (402); a power connection elastic piece (403) is fixedly installed inside the power connection mounting cylinder (402); the power connection elastic piece (403) is an elastic conductor steel sheet; the inner side of the control mounting bracket (401) is provided with threads; and a circle of lamp beads is provided on the warning light (4011).

7. A hydraulic valve seat welding repair device according to claim 6, characterized in that: The power connection control member (4) further includes: a spot welding elastic piece (404) and a slewing power connection piece (4041). One end of the spot welding elastic piece (404) is fixedly installed inside the control mounting bracket (401); one end of the slewing power connection piece (4041) is fixedly installed inside the control mounting bracket (401); the slewing power connection piece (4041) is an elastic conductor steel sheet; a welding torch switch is provided at the bottom of the spot welding elastic piece (404), and the end of the welding torch switch at the bottom of the spot welding elastic piece (404) is attached to the inner side of the power connection mounting cylinder (402).

8. A hydraulic valve seat welding repair device according to claim 7, characterized in that: The spot welding time control member (5) includes: a control handle (501), a constant speed motor (502), an insulating block (5021), a power connection cam block (503), and a power-on switch (504). The control handle (501) is threadedly connected to the power connection mounting cylinder (402); a constant speed motor (502) is fixedly installed inside the control handle (501), and an insulating block (5021) is fixedly installed on the output shaft of the constant speed motor (502); a power connection cam block (503) is fixedly installed on the insulating block (5021), and the power connection cam block (503) has a cam structure; a power-on switch (504) is fixedly installed at the tail of the control handle (501), and the constant speed motor (502) is electrically connected to the power-on switch (504); the power connection cam block (503) is a conductor; the end of the power connection cam block (503) is attached to the power connection elastic piece (403); the power connection cam block (503) is used to rotate and fit the spot welding elastic piece (404) and the slewing power connection piece (4041); the spot welding elastic piece (404) and the slewing power connection piece (4041) are arranged in a staggered manner. The power connection cam block (503) first contacts and presses the spot welding elastic piece (404), and then contacts the slewing power connection piece (4041). When the power connection cam block (503) rotates, it first separates from the spot welding elastic piece (404) and then separates from the slewing power connection piece (4041); the welding torch switch at the bottom of the spot welding elastic piece (404) is electrically connected to the welding torch, and the power connection elastic piece (403), the slewing power connection piece (4041), and the drive motor (102) are connected in series to the power supply.

9. The hydraulic valve seat welding repair device according to claim 6, characterized in that: The prompting member (6) includes: a fitting elastic piece (601) and a contact piece (6011). A row of fitting elastic pieces (601) is fixedly installed at the tail of the trimming block (301), and there is a gap between the row of fitting elastic pieces (601); Contact pieces (6011) are respectively and fixedly installed on a row of the fitting elastic pieces (601); The fitting elastic piece (601) is elastically fitted to the inner side of the valve seat.

10. A hydraulic valve seat welding repair device according to claim 9, characterized in that: The prompting member (6) further includes: a fixing piece (602). A row of fixing pieces (602) is fixedly installed on the trimming block (301); There is a gap between a row of the fixing pieces (602), and the ends of a row of the fixing pieces (602) are respectively attached to a row of fitting elastic pieces (601); The lamp beads in a circle on the prompting lamp (4011) are respectively connected in series with a row of contact pieces (6011) and fixing pieces (602) for power supply.

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