CN211102333U - Welding auxiliary device for preventing clamping stagnation of throttle valve - Google Patents
Welding auxiliary device for preventing clamping stagnation of throttle valve Download PDFInfo
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- CN211102333U CN211102333U CN201922393475.2U CN201922393475U CN211102333U CN 211102333 U CN211102333 U CN 211102333U CN 201922393475 U CN201922393475 U CN 201922393475U CN 211102333 U CN211102333 U CN 211102333U
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- positioning rod
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- valve block
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The utility model discloses a welding auxiliary device for preventing air throttle clamping stagnation, which comprises a shaft arranged on a valve block through screws and used for driving the valve block to rotate, wherein two ends of the shaft respectively pass through holes arranged on a valve body, one end of the shaft passes through a driven gear, the end surface of the shaft is positioned at the welding position of the driven gear, and the end surface of the shaft at the other end is arranged in a cross groove structure; the welding auxiliary device also comprises a positioning rod which is assembled at the end of the cross groove of the shaft and used for driving the shaft to rotate and a control mechanism which is arranged at the tail part of the positioning rod 7 and used for driving the positioning rod to move. The utility model has the advantages of being simple in structure and convenient in operation, come to monitor locating lever pivoted angle through flexible angle encoder to drive shaft and valve block and rotate, make the distance accurate control between valve block and the valve body at 0.03mm, can effectually prevent that the valve block from appearing the phenomenon of jamming with the valve body when the action, improved production efficiency.
Description
Technical Field
The utility model relates to an engine emission technical field, especially a prevent welding auxiliary device of throttle valve jamming.
Background
For a supercharged cold diesel engine, under some conditions, the problem that exhaust gas is difficult to flow into an air inlet pipe due to the fact that the pressure of inlet air after intercooling is larger than the pressure of exhaust gas before a turbine exists, and therefore an EGR system cannot function. At this time, an electronic throttle valve needs to be additionally arranged in an air inlet pipeline of the diesel engine for throttling and pressure reduction.
Along with the national requirements on the emission of automobile exhaust gas, the automobile industry has more and more strict requirements on an exhaust gas treatment system and an engine EGR system, and the traditional EGR system can not meet the requirements.
Under the requirement of the national emission standard, two schemes are provided for tail gas treatment: 1) the EGG system and the DPF are used for processing, when an engine executes a DPF regeneration program, the size of air inflow (the essence is to control the air-fuel ratio) is controlled by controlling an electronic throttle valve, and fuel oil (post injection and secondary post injection) which is additionally injected is matched, so that the aim of improving the regeneration temperature of the DPF is fulfilled; 2) handle through SCR, let the urea among engine exhaust and the SCR react promptly, convert toxic gas into nontoxic gas, control the size of air input through adjusting electronic throttle to the fuel is additionally sprayed in the cooperation, can effectively improve exhaust temperature, improves the work efficiency of SCR system. In either case, the electronic throttle valve cannot be opened, and is one of indispensable components in the technical field of exhaust gas recirculation systems of diesel engines.
The valve plate of the throttle valve is easy to be blocked with the valve body when in movement work, so that a gap of 0.03mm is required to be reserved between the valve plate of the throttle valve and the valve body when the valve plate of the throttle valve is closed. In the production process of the throttle valve, when a driven gear is welded, in order to ensure that a valve block keeps a certain angle and incompletely closes the welding, a feeler gauge is adopted for fixing during production to ensure that a gap of 0.03mm exists between the valve block and a valve body, the feeler gauge is taken out after the welding is finished, and then the next throttle valve block is subjected to positioning welding.
Disclosure of Invention
The utility model discloses the technical problem that needs to solve provides a simple structure, convenient operation's the welding auxiliary device that prevents the throttle valve jamming, distance between can accurate positioning valve block and the valve body improves production efficiency.
In order to solve the technical problem, the utility model adopts the following technical proposal.
The welding auxiliary device for preventing the throttle valve from being clamped comprises a shaft which is arranged on the valve block through a screw and used for driving the valve block to rotate, wherein two ends of the shaft respectively penetrate through holes formed in the valve body, one end of the shaft penetrates through the driven gear, the end surface of the shaft is positioned at the welding position of the driven gear, and the end surface of the other end of the shaft is arranged in a cross groove structure; the welding auxiliary device also comprises a positioning rod which is assembled at the end of the cross groove of the shaft and used for driving the shaft to rotate and a control mechanism which is arranged at the tail part of the positioning rod 7 and used for driving the positioning rod to move.
Above-mentioned prevent welding auxiliary device of throttle valve jamming, control mechanism is including the flexible angle encoder that is used for controlling locating lever turned angle and being used for driving the locating lever according to setting for the angle pivoted direct current servo motor, and direct current servo motor's input is connected to flexible angle encoder's output, and direct current servo motor's motor shaft is connected on the locating lever.
Due to the adoption of the technical scheme, the utility model has the following technical progress.
The utility model has the advantages of being simple in structure and convenient in operation, come to monitor locating lever pivoted angle through flexible angle encoder to drive shaft and valve block and rotate, make the distance accurate control between valve block and the valve body at 0.03mm, can effectually prevent that the valve block from appearing the phenomenon of jamming with the valve body when the action, improved production efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a rear view of the present invention;
fig. 3 is a schematic structural view of the positioning rod of the present invention;
wherein: 1. cross slot end, 2. shaft, 3. screw, 4. valve block, 5. valve body, 6. driven gear, 7. locating lever.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The welding auxiliary device for preventing the throttle valve from being clamped is structurally shown in figures 1-3 and comprises a shaft 2, a valve plate 4, a valve body 5, a positioning rod 7 and a control mechanism. The shaft 2 is arranged on the valve block 4 and used for driving the valve block 4 to rotate, the shaft 2 penetrates through a through hole formed in the valve body 5, one end of the shaft is welded with the driven gear 6, and the other end of the shaft is of a cross groove structure. The positioning rod 7 is assembled with the cross-shaped groove end 1 of the shaft 2 and is used for driving the shaft 2 to rotate. The control mechanism is arranged at the tail part of the positioning rod 7 and is used for driving the positioning rod 7 to act.
The shaft 2 is arranged on the valve plate 4 through a screw 3 and is connected with the valve plate 4 into a whole, two ends of the shaft 2 respectively penetrate through holes formed in the valve body 5, one end of the shaft penetrates through the driven gear 6, the shaft end face of the end is located at the welding position of the driven gear 6, and the shaft end face of the other end is of a cross groove structure.
The top of locating lever 7 is joined in marriage mutually with the cross groove end 1 of axle 2 and is adorned, and locating lever 7 drives valve block 4 through the cross groove and rotates.
The control mechanism is arranged at the tail part of the positioning rod 7 and is used for driving the positioning rod 7 to act. The control mechanism comprises a flexible angle encoder and a direct current servo motor. The flexible angle encoder is used for controlling the rotating angle of the positioning rod, the direct-current servo motor is used for driving the positioning rod (7) to rotate according to the set angle, the output end of the flexible angle encoder is connected with the input end of the direct-current servo motor, and the motor shaft of the direct-current servo motor is connected to the positioning rod (7). The flexible angle encoder can set for 7 pivoted angles of locating lever, and direct current servo driver control locating lever 7 rotates and drives axle 2 simultaneously and rotates, and flexible angle encoder monitors the rotatory angle of locating lever 7, and when the valve block was rotatory to the angle of setting for, direct current servo motor stopped the action, and the clearance of valve block 4 and valve body 5 was 0.03mm this moment, can weld counter shaft and driven gear.
The utility model discloses at the during operation, be connected the locating lever with the cross groove end of axle, direct current servo motor passes through the locating lever and drives the valve block rotation, and when rotating the rotation angle that flexible angle encoder set for, direct current servo motor stops the action, welds through welding set counter shaft and driven gear 6, and the welding is accomplished the back, takes off the locating lever, accomplishes the welding.
Claims (2)
1. Prevent welding auxiliary device of throttle valve jamming, its characterized in that: the valve plate structure comprises a shaft (2) which is arranged on a valve plate (4) through a screw (3) and used for driving the valve plate (4) to rotate, wherein two ends of the shaft (2) respectively penetrate through holes formed in a valve body (5), one end of the shaft penetrates through a driven gear (6), the end surface of the shaft is positioned at the welding position of the driven gear (6), and the end surface of the other end of the shaft is arranged to be of a cross groove structure; the welding auxiliary device also comprises a positioning rod (7) which is assembled with the cross groove end (1) of the shaft (2) and used for driving the shaft (2) to rotate, and a control mechanism which is arranged at the tail part of the positioning rod (7) and used for driving the positioning rod (7) to act.
2. The welding assistance device for preventing throttle sticking according to claim 1, characterized in that: the control mechanism comprises a flexible angle encoder and a direct current servo motor, the flexible angle encoder is used for controlling the rotation angle of the positioning rod (7), the direct current servo motor is used for driving the positioning rod (7) to rotate according to a set angle, the output end of the flexible angle encoder is connected with the input end of the direct current servo motor, and the motor shaft of the direct current servo motor is connected to the positioning rod (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922393475.2U CN211102333U (en) | 2019-12-27 | 2019-12-27 | Welding auxiliary device for preventing clamping stagnation of throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922393475.2U CN211102333U (en) | 2019-12-27 | 2019-12-27 | Welding auxiliary device for preventing clamping stagnation of throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211102333U true CN211102333U (en) | 2020-07-28 |
Family
ID=71687844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922393475.2U Active CN211102333U (en) | 2019-12-27 | 2019-12-27 | Welding auxiliary device for preventing clamping stagnation of throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211102333U (en) |
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2019
- 2019-12-27 CN CN201922393475.2U patent/CN211102333U/en active Active
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