CN213543946U - Height-adjusting and leakage-detecting integrated tool for small gasoline engine carburetor needle valve - Google Patents

Abstract

The utility model relates to a carburetor production technical field especially discloses a small gasoline engine carburetor needle valve height-adjusting and leak-checking integration frock, including the first driving piece that the needle goes up and down, the positioning seat and the feedback unit that are located the needle below of increaseing needle, drive, be provided with the installation cavity that supplies the carburetor holding on the positioning seat, wear to be equipped with the ejector pin on the positioning seat, the below of positioning seat is provided with the second driving piece that the drive ejector pin goes up and down, be provided with the admission nozzle on the positioning seat and communicate the admission nozzle and the inlet channel of carburetor body, be provided with first response piece on the heightening needle, be provided with the second response piece in the inlet channel, first response piece and second response piece all with feedback unit connection. By adopting the structure, the height-adjusting and leakage-detecting integrated tool is provided, two processes are carried out on one tool, the operation can be completed only by once placing and taking, the production efficiency is high, and the product consistency is good.

Description

Height-adjusting and leakage-detecting integrated tool for small gasoline engine carburetor needle valve

Technical Field

The utility model relates to a carburetor production technical field, especially a small-size gasoline engine carburetor needle valve height-adjusting and leak hunting integration frock.

Background

At present, the mounting height and needle valve seat sealing performance of a needle valve rocker arm of a general small carburetor have great influence on the carburetor performance, the sizes of accessories such as a body processing part, a needle valve seat, the needle valve rocker arm, a needle valve opening and closing part, a needle valve rocker arm pin and the like have influence on the mounting height of the needle valve rocker arm, the consistency of the carburetor is poor due to the accumulated error of the accessories, the mounting height of the needle valve rocker arm needs to be adjusted after the accessories are mounted, and the air tightness detection needs to be carried out after the accessories are assembled in order to ensure the sealing effect of a needle valve seat system. The existing assembly method is to separately carry out two processes by using a needle valve rocker arm height adjusting tool and a needle valve seat leakage detecting tool, needs two placing and taking actions, and is large in workload of operators, low in production efficiency and waste in cost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a height-adjusting and leak hunting integration frock puts the twice process and goes on a frock, only needs once to put and get the action and can accomplish, and operating personnel work load is low, and production efficiency is high, and the product uniformity is good.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a small-size gasoline engine carburetor needle valve height-adjusting and leak-checking integration frock, includes the height-adjusting needle, drives the first driving piece that the height-adjusting needle goes up and down, is located height-adjusting needle below positioning seat and feedback unit, be provided with the installation cavity that supplies the carburetor holding on the positioning seat, wear to be equipped with the ejector pin on the positioning seat, the below of positioning seat is provided with the second driving piece that the drive ejector pin goes up and down, be provided with the suction nozzle on the positioning seat and the inlet channel of intercommunication suction nozzle and carburetor body, be provided with first response piece on the height-adjusting needle, be provided with the second response piece in the inlet channel, first response piece and second response piece all are connected with the feedback unit.

Among the above-mentioned technical scheme, heighten the needle valve rocking arm and needle valve seat leak hunting twice process is put and is gone on same frock, only needs once to adorn to get the action and just can accomplish, does not need to carry out repetitious operation again, changes one set of frock from two sets of frock and has saved the cost, and the space that the frock was put and is taken also still less, and operating personnel work load is low, and production efficiency is high, and the product uniformity is good.

As the utility model discloses a further setting, the second driving piece includes intermeshing's driving gear and driven gear, the driving gear is by motor drive, the one end of ejector pin is passed the positioning seat and is arranged in the installation intracavity, the other end and driven gear threaded connection.

Among the above-mentioned technical scheme, the second driving piece comprises the two-stage gear, and the adjustment precision is high, and certainly the gear number is not limited to two, can increase or reduce the number of gear according to the required precision of frock, optimizes the structure, simplifies the part, and reduce cost drives through the principle of lead screw between driven gear and the ejector pin.

As a further setting of the utility model, the feedback unit includes display panel, the last a plurality of pilot lamp that is provided with of display panel.

Among the above-mentioned technical scheme, the pilot lamp divide into three red signal lamp and the green OK signal lamp of high light, low light, gas leakage lamp, makes the operator in time receive the detected information, improves and transfers high efficiency.

As the utility model discloses a further setting, the ejector pin includes the top, establishes the sleeve pipe outside connecting portion with connecting portion and the cover that the top is connected, sleeve pipe and driven gear threaded connection, the lower extreme of positioning seat is provided with and supplies connecting portion and sleeve pipe to inlay the guide way of establishing and direction slip, be provided with compression spring between the bottom surface of connecting portion and guide way, connecting portion expose outside the sleeve pipe towards the tip of guide way bottom surface, and this tip outer peripheral face is provided with and constitutes butt complex bulge loop with the sleeve pipe, the outer peripheral face of bulge loop and the inner wall sealing connection of guide way, the space and the suction nozzle intercommunication at compression spring place.

Among the above-mentioned technical scheme, the ejector pin comprises the three, and easy to assemble and change, top and connecting portion can be an organic whole and set up or can dismantle the setting, and the bulge loop erects on the sleeve pipe, and when the sleeve pipe rose, the sleeve pipe promoted the bulge loop and made connecting portion also rose, and when the sleeve pipe descended, connecting portion reset under compression spring's effect, simple structure, it is accurate to go up and down, avoided the top to produce the friction because of rotatory and needle valve seat.

As the utility model discloses a further setting, driven gear's below is provided with the stop collar that the cover was established on connecting portion, the stop collar is fixed on connecting portion through the first locating pin of radially wearing to establish along it.

Among the above-mentioned technical scheme, the range of rising of ejector pin can be injectd in the setting of stop collar, and the stop collar is fixed through first locating pin with connecting portion, simple structure, simple to operate.

As a further setting of the utility model, the top inlays to be established on connecting portion, is provided with the second locating pin that radially penetrates along it on the outer peripheral face of connecting portion, the outer peripheral face butt at this second locating pin and top.

Among the above-mentioned technical scheme, top and connecting portion are for dismantling the setting, convenient change increase of service life.

As the utility model discloses a further setting, the top of positioning seat is provided with the support that supplies first driving piece installation, the support includes mounting panel and stand, so the cover is equipped with the guide that can follow its axial direction and slide on the stand, the needle of increaseing is fixed on the guide, and first driving piece drive guide goes up and down.

Among the above-mentioned technical scheme for heightening the needle and moving the in-process more stable, the precision is higher, simple structure, processing is convenient.

As the utility model discloses a further setting, the guide is established the deflector on the stand and is connected the clamp plate on the deflector including the cover, the output and the deflector of first driving piece are connected, the needle of increaseing wears to establish on the clamp plate.

Among the above-mentioned technical scheme, make fixed more stable of height-adjusting needle, avoid height-adjusting needle to drop or skew in the use, improve height-adjusting precision, simple to operate, simple structure.

As a further setting of the utility model, the clamp plate is provided with a through-hole, and the top of through-hole is provided with one and can fixes the locating plate on the clamp plate, heightening the needle wear to establish on the locating plate and with locating plate threaded connection, wear out the through-hole after its tip passes the locating plate and expose the below at the through-hole, the width of through-hole is greater than heightening the diameter of needle.

Among the above-mentioned technical scheme, increase area of contact makes heightening needle fixed more stable, and the setting of through-hole has the effect of direction, conveniently heightens the needle adjustment.

As a further arrangement of the present invention, the through hole is T-shaped.

In the technical scheme, the carburetor is convenient to adjust, is suitable for carburetors with different structures, has a wide application range and saves cost.

The present invention will be further described with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a positioning seat according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second driving member according to an embodiment of the present invention;

FIG. 4 is a structural sectional view of a side leakage part according to an embodiment of the present invention;

FIG. 5 is a side view of the structure of the embodiment of the present invention;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is a front view of the structure of the embodiment of the present invention;

FIG. 8 is a cross-sectional view B-B of FIG. 7;

fig. 9 is a sectional view of the height-adjustable part according to the embodiment of the present invention.

Detailed Description

The utility model discloses a concrete embodiment is shown in fig. 1-9, a small gasoline engine carburetor needle valve heightening and leak hunting integration frock, including heightening needle 1, the first driving piece 2 of the 1 lift of drive heightening needle, be located positioning seat 3 and feedback unit 4 of heightening needle 1 below, be provided with the installation cavity 31 that supplies the 5 holding of carburetor on the positioning seat 3, wear to be equipped with ejector pin 6 on the positioning seat 3, the below of positioning seat 3 is provided with the second driving piece 7 that drive ejector pin 6 goes up and down, be provided with the admission nozzle 32 and communicate the admission nozzle 32 and the inlet channel 33 of the 5 bodies of carburetor on the positioning seat 3, heightening needle 1 is last to be provided with first inductor, be provided with the second inductor in the inlet channel 33, first inductor and second inductor all are connected with feedback unit 4.

The two processes of heightening the needle valve rocker arm and detecting the leakage of the needle valve seat are carried out on the same tool, the process can be completed only by one-time assembling and disassembling action without multiple operations, the cost is saved by changing two sets of tools into one set of tool, the occupied space for placing the tools is less, the workload of operators is low, the production efficiency is high, and the product consistency is good.

The second driving member 7 includes a driving gear 71 and a driven gear 72 that are engaged with each other, the driving gear 71 is driven by a motor 73, one end of the push rod 6 penetrates through the positioning seat 3 and is disposed in the mounting cavity 31, and the other end is in threaded connection with the driven gear 72. The second driving part 7 is composed of two stages of gears, the adjusting precision is high, the number of the gears is not limited to two, the number of the gears can be increased or reduced according to the precision requirement of the tool, the structure is optimized, the parts are simplified, the cost is reduced, and the driven gear 72 and the ejector rod 6 are driven through the principle of a screw rod.

The feedback unit 4 includes a display panel 41, and a plurality of indicator lights 411, 412, 413, and 414 are disposed on the display panel 41. The indicator lights 411, 412, 413 and 414 are divided into three red signal lights of a high light 411, a low light 412 and an air leakage light 413 and a green OK414 signal light, so that an operator can receive detection information in time, and the efficiency of heightening is improved.

The ejector rod 6 comprises a top part 61, a connecting part 62 connected with the top part 61 and a sleeve 63 sleeved outside the connecting part 62, the sleeve 63 is in threaded connection with a driven gear 72, a guide groove 34 which is used for embedding and guiding the connecting part 62 and the sleeve 63 to slide is arranged at the lower end of the positioning seat 3, a compression spring 35 is arranged between the connecting part 62 and the bottom surface of the guide groove 34, the end part of the connecting part 62 facing the bottom surface of the guide groove 34 is exposed outside the sleeve 63, a convex ring 621 which is in butt fit with the sleeve 63 is arranged on the outer peripheral surface of the end part, the outer peripheral surface of the convex ring 621 is in sealing connection with the inner wall of the guide groove 34 through a sealing ring 6211, and the space where the compression spring 35 is. Ejector pin 6 comprises three parts, easy to assemble and change, and top 61 can be integrative setting or can dismantle the setting with connecting portion 62, and bulge loop 621 erects on sleeve pipe 63, and when sleeve pipe 63 rose, sleeve pipe 63 promoted bulge loop 621 and made connecting portion 62 also rose, and when sleeve pipe 63 descended, connecting portion 62 reset under compression spring 35's effect, simple structure, it is accurate to go up and down, avoids top 61 to produce the friction because of rotation and needle valve seat.

A limiting sleeve 721 sleeved on the connecting portion 62 is arranged below the driven gear 72, and the limiting sleeve 721 is fixed on the connecting portion 62 through a first positioning pin 7211 radially penetrating along the limiting sleeve. The arrangement of the limit sleeve 721 can limit the ascending amplitude of the push rod 6, and the limit sleeve 721 and the connecting part 62 are fixed through the first positioning pin 7211, so that the structure is simple and the installation is convenient.

The top portion 61 is fitted to the connecting portion 62, and a second positioning pin 622 penetrating in the radial direction is provided on the outer peripheral surface of the connecting portion 62, and the second positioning pin 622 abuts against the outer peripheral surface of the top portion 61. Top 61 and connecting portion 62 are for dismantling the setting, convenient change, increase of service life.

Above-mentioned positioning seat 3's top is provided with the support 8 that supplies the installation of first driving piece 2, support 8 includes mounting panel 81 and stand 82, so the cover is equipped with the guide 9 that can slide along its axial direction on the stand 82, heightening needle 1 is fixed on guide 9, and first driving piece 2 drive guide 9 goes up and down. First driving piece 2 is cylinder or motor for heightening needle 1 is more stable at the removal in-process, and the precision is higher, simple structure, and processing is convenient.

The guide member 9 includes a guide plate 91 sleeved on the column 82 and a pressing plate 92 connected to the guide plate 91, the output portion of the first driving member 2 is connected to the guide plate 91, and the height-adjusting needle 1 is inserted into the pressing plate 92. Make heightening needle 1 fixed more stable, avoid heightening needle 1 and drop or skew in the use, improve and heighten the precision, simple to operate, simple structure.

Above-mentioned clamp plate 92 is provided with a through-hole 921, and the top of through-hole 921 is provided with a locating plate 93 that can fix on clamp plate 92, heightening needle 1 wears to establish on locating plate 93 and with locating plate 93 threaded connection, wears out the below that through-hole 921 exposes at through-hole 921 behind its tip passing locating plate 93, the width of through-hole 921 is greater than heightening needle 1's diameter. Increase area of contact makes heightening needle 1 fixed more stable, and the setting of through-hole 921 has the effect of direction, conveniently heightens needle 1 adjustment.

The through hole 921 is T-shaped. Convenient adjustment, suitability for carburetors 5 with different structures, wide application range and cost saving.

As shown in fig. 1, the first driving member 2 is supported by three columns 82, the pressing plate 923 can be controlled by the first driving member 2 to move up and down, the height-adjusting needle 1 is fixed on the pressing plate 923, the air inlet nozzle 32 introduces 0.8-0.85Kgf/cm2 of air pressure into the tool, the driving gear 71 rotates forward and backward to make the top rod 6 move up and down, the positioning seat 3 can limit the position of the product, and the display panel 41 is provided with three red signal lamps, namely a high signal lamp 411, a low signal lamp 412 and an air leakage lamp 413, and a green OK signal lamp 414.

When the device works, a product is arranged on the positioning seat 3, the switch is started, the first driving piece 2 controls the pressing plate 923 to press downwards to be propped against the product to completely fix the product, the driving gear 71 rotates to enable the ejector rod 6 to ascend, the needle valve seat is propped to a proper height, then the driving gear 71 rotates reversely to enable the ejector rod 6 to descend and reset, and the low lamp 412 is turned on when the rocker arm of the needle valve is too low after the height is adjusted; if the needle valve rocker arm is too high, the high lamp 411 is on; when the height of the needle valve seat is qualified, 0.8-0.85Kgf/cm2 air pressure is introduced into the tool through the air inlet nozzle 32, when the needle valve seat is leaked, the air leakage lamp 413 is turned on, and when the needle valve seat is qualified, the OK lamp 414 is turned on.

As shown in fig. 9, the height-adjusting needle 1 has a first sensing member for sensing whether to contact with the needle rocker 51, and after the switch is turned on, the pressing plate 923 presses down against the product to be completely fixed. When the height adjusting needle 1 is not in contact with the tail of the needle valve rocker arm 51, the needle valve rocker arm 51 is too low, the unqualified low lamp 412 is on (shown in the figure A); when the heightening needle 1 contacts the tail of the needle valve rocker arm 51 (as shown in fig. B), the carrier rod 6 rises to lift the needle valve seat 53 and the needle valve 52 upward. When the needle valve seat 53 and the needle valve 52 are pushed to be high enough, the tail of the needle valve rocker arm 51 still does not drop to the height separated from the height-adjusting needle 1, the needle valve rocker arm 51 is too high and unqualified, and the high lamp 411 is on (shown in a figure C); when the needle valve seat 53 and the needle valve 52 are pushed to a certain height, the tail part of the needle valve rocker arm 51 descends to be separated from the height adjusting needle 1 (shown in figure D), the ejector rod 6 immediately descends to reset, and the height adjustment is completed.

As shown in fig. 4, the packing 36 and the packing 6211 form a sealed space between the tool and the product, i.e., the air intake passage 33 (hatched area).

After the height adjustment is completed, 82.5kpa of air pressure is introduced into the tool from the air inlet nozzle 32, namely the air inlet channel 33 (shaded area), air leakage occurs when the air pressure is lower than 80.6kpa after pressure maintaining for 3s, the air leakage lamp 413 is on (shown in a graph E), air leakage occurs when the air pressure is not lower than 80.6kpa, the OK lamp 414 is on (shown in a graph F), and the tool is automatically reset.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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 "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The utility model discloses do not confine the above-mentioned embodiment to, the general technical personnel in this field can adopt other multiple embodiments to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope.

Claims (10)

1. The utility model provides a small-size gasoline engine carburetor needle valve height-adjusting and leak hunting integration frock which characterized in that: the height adjusting device comprises a height adjusting needle, a first driving piece for driving the height adjusting needle to lift, a positioning seat and a feedback unit, wherein the positioning seat is located below the height adjusting needle, an installation cavity for containing a carburetor is formed in the positioning seat, an ejector rod penetrates through the positioning seat, a second driving piece for driving the ejector rod to lift is arranged below the positioning seat, an air inlet nozzle and an air inlet channel communicated with the air inlet nozzle and a carburetor body are arranged on the positioning seat, a first induction piece is arranged on the height adjusting needle, a second induction piece is arranged in the air inlet channel, and the first induction piece and the second induction piece are both connected with the feedback unit.

2. The integrated tool for height adjustment and leakage detection of the small gasoline engine carburetor needle valve according to claim 1, is characterized in that: the second driving piece comprises a driving gear and a driven gear which are meshed with each other, the driving gear is driven by a motor, one end of the ejector rod penetrates through the positioning seat and is arranged in the mounting cavity, and the other end of the ejector rod is in threaded connection with the driven gear.

3. The integrated tool for height adjustment and leakage detection of the small gasoline engine carburetor needle valve according to claim 1 or 2, is characterized in that: the feedback unit comprises a display panel, and a plurality of indicator lamps are arranged on the display panel.

4. The integrated tool for height adjustment and leakage detection of the small gasoline engine carburetor needle valve according to claim 3, is characterized in that: the ejector pin includes the top, establishes the sleeve pipe outside connecting portion with connecting portion and cover that the top is connected, sleeve pipe and driven gear threaded connection, the lower extreme of positioning seat is provided with and supplies connecting portion and sleeve pipe to inlay the guide way of establishing and leading and sliding, be provided with compression spring between the bottom surface of connecting portion and guide way, connecting portion expose outside the sleeve pipe towards the tip of guide way bottom surface, and this tip outer peripheral face is provided with and constitutes butt complex bulge loop with the sleeve pipe, the outer peripheral face of bulge loop and the inner wall sealing connection of guide way, the space and the suction nozzle intercommunication at compression spring place.

5. The integrated tool for height adjustment and leakage detection of the small gasoline engine carburetor needle valve according to claim 4, is characterized in that: the limiting sleeve is arranged below the driven gear and sleeved on the connecting portion, and the limiting sleeve is fixed on the connecting portion through a first positioning pin which penetrates through the limiting sleeve along the radial direction of the limiting sleeve.

6. The integrated tool for height adjustment and leakage detection of the small gasoline engine carburetor needle valve according to claim 4 or 5, is characterized in that: the top is embedded in the connecting portion, a second positioning pin penetrating through the connecting portion along the radial direction is arranged on the outer peripheral surface of the connecting portion, and the second positioning pin is abutted to the outer peripheral surface of the top.

7. The integrated tool for height adjustment and leakage detection of the small gasoline engine carburetor needle valve according to claim 1, 2, 4 or 5, characterized in that: the top of positioning seat is provided with the support that supplies the installation of first driving piece, the support includes mounting panel and stand, so the cover is equipped with the guide that can slide along its axial direction on the stand, the needle of increaseing is fixed on the guide, and first driving piece drive guide goes up and down.

8. The integrated tool for height adjustment and leakage detection of the small gasoline engine carburetor needle valve according to claim 7, is characterized in that: the guide part comprises a guide plate sleeved on the stand column and a pressing plate connected to the guide plate, the output part of the first driving part is connected with the guide plate, and the heightening needle is arranged on the pressing plate in a penetrating mode.

9. The integrated tool for height adjustment and leakage detection of the small gasoline engine carburetor needle valve according to claim 8, is characterized in that: the pressing plate is provided with a through hole, a positioning plate capable of being fixed on the pressing plate is arranged above the through hole, the heightening needle is arranged on the positioning plate in a penetrating mode and is in threaded connection with the positioning plate, the end portion of the heightening needle penetrates through the positioning plate and then penetrates out of the through hole to be exposed below the through hole, and the width of the through hole is larger than the diameter of the heightening needle.

10. The integrated tool for height adjustment and leakage detection of the small gasoline engine carburetor needle valve according to claim 9, is characterized in that: the through holes are T-shaped.

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