Throttle valve tool with gear cavity plugging structure

Abstract

The utility model discloses a throttle valve tool with a gear cavity plugging structure, which comprises a fixed seat, a pressing component is arranged at the top of the fixed seat, a first linear driving device is arranged on one side of the fixed seat, and the driving end of the first linear driving device points to the fixed seat and is connected with an expansion component. The expansion assembly is used for blocking a gear cavity of the throttle valve after being expanded. Compared with the prior art, the expansion assembly can enter the gear cavity of the throttle valve under the action of the first linear driving device 4, and the expansion assembly can expand, so that the expansion assembly expands into a corresponding shape according to the internal structure of the gear cavity so as to seal the gear cavity, a complicated plugging piece does not need to be machined, the cost is reduced, and the service life of the throttle valve is prolonged. The sealing performance of the gear cavity cannot be reduced due to abrasion of the expansion assembly, and long-term use can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of throttle detection, in particular to a throttle tooling with a gear cavity plugging structure. Background Technique

[0002] The throttle is an important valve for controlling the air entering the engine. By adjusting the opening degree of the throttle, the intake air volume can be controlled, thereby affecting the power output and economy of the engine. The gear cavity of the throttle is located inside the throttle mechanism, and a series of gears and related mechanical transmission devices are installed inside it. These gears mesh with each other and can accurately transmit the power from the throttle control unit (such as a stepper motor or a DC motor) to the throttle blade, thereby controlling the degree of its opening or closing.

[0003] When detecting the air flow rate of the throttle, it is necessary to plug the gear cavity of the throttle to prevent the air flow from flowing out of the gear cavity and affecting the accuracy of the detection result. The existing tooling generally uses a numerical control machine tool to machine a plugging piece matching the gear cavity, then fixes a rubber piece on the plugging piece, and then uses a cylinder to insert the plugging piece into the gear cavity of the throttle to plug it. This method has two problems. One is that a plugging piece matching each model of throttle needs to be machined, resulting in high costs. The other is that the plugging piece will wear during long-term use, affecting its sealing effect. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a throttle tooling with a gear cavity plugging structure. The expansion assembly will enter the gear cavity of the throttle under the action of the first linear driving device 4, and the expansion assembly itself can expand, so as to expand into a corresponding shape according to the internal structure of the gear cavity to seal the gear cavity, without machining complex plugging pieces. Moreover, the expansion assembly will not cause the sealing performance of the gear cavity to decline due to wear and can be used for a long time.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A throttle tooling with a gear cavity plugging structure includes a fixed seat. A pressing assembly is arranged at the top of the fixed seat. A first linear driving device is arranged on one side of the fixed seat. The driving end of the first linear driving device points to the fixed seat and is connected with an expansion assembly. The expansion assembly is used to plug the gear cavity of the throttle after expansion.

[0007] Further, the expansion assembly includes an air pump and a connecting plate fixed to the driving end of the first linear driving device. An airbag is fixed to the side of the connecting plate close to the fixed seat. The air outlet end of the air pump is connected to the airbag through a hose.

[0008] Further, an exhaust valve is provided on the hose.

[0009] Further, a pressure gauge is also provided on the hose.

[0010] Further, a buffer pad is provided at the edge where the airbag is connected to the connecting plate.

[0011] Further, the buffer pad includes a flat pad fixed to the connecting plate, and a triangular pad is connected between the buffer pad and the outer side wall of the airbag.

[0012] Further, through holes are formed in the side of the connecting plate opposite to the airbag, and one end of the hose passes through the through holes and is connected to the airbag.

[0013] Further, the pressing component includes a second linear driving device and a pressing block fixed to the output end of the second linear driving device.

[0014] Further, a fixing frame is further included. The pressing component and the fixing seat are fixed on the fixing frame, and the first linear driving device is fixed on the fixing frame through a fixing plate.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] The expansion component of the present utility model will enter the gear cavity of the throttle under the action of the first linear driving device 4, and the expansion component itself can expand, so as to expand into a corresponding shape according to the internal structure of the gear cavity to seal the gear cavity. There is no need to process complex plugging parts, which reduces costs. Moreover, the expansion component will not cause the sealing performance of the gear cavity to decline due to wear and can be used for a long time.

[0017] The gas in the airbag of the present utility model can be discharged through the exhaust valve. Therefore, when it is necessary to remove the airbag from the gear cavity of the throttle, the gas in the airbag can be discharged first, so as to facilitate the removal of the airbag from the gear cavity.

[0018] The buffer pad of the present utility model can play a buffering role when the connecting plate contacts the side of the throttle gear cavity. And when the airbag is in an uninflated state, since the triangular pad has a certain contact surface with the edge of the airbag, it can play a positioning role for the airbag to prevent the airbag from dropping too much when uninflated. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a throttle tooling with a gear cavity plugging structure according to the present utility model.

[0020] Figure 2 It is a schematic diagram of the connection of the buffer pad, connecting plate, airbag and hose of a throttle tooling with a gear cavity plugging structure according to the present utility model.

[0021] Figure 3 Schematic connection diagram of the buffer pad, airbag and connecting plate of a throttle tooling with a gear cavity plugging structure according to the present utility model.

[0022] Figure 4 Schematic structural diagram of the pressing-down component of a throttle tooling with a gear cavity plugging structure according to the present utility model.

[0023] In the figure: 1, fixed frame; 2, fixed seat; 3, pressing-down component; 301, pressing block; 302, second linear driving device; 4, first linear driving device; 5, fixing plate; 6, expansion component; 601, connecting plate; 6011, through hole; 602, airbag; 603, hose; 604, pressure gauge; 605, exhaust valve; 606, air pump; 8, buffer pad; 801, flat pad; 802, triangular pad. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] As Figures 1-4 shown, a throttle tooling with a gear cavity plugging structure includes a fixed seat 2, a pressing-down component 3 is arranged on the top of the fixed seat 2, a first linear driving device 4 is arranged on one side of the fixed seat 2, the driving end of the first linear driving device 4 points to the fixed seat 2 and is connected with an expansion component 6, and the expansion component 6 is used to plug the gear cavity of the throttle after expansion.

[0026] In this embodiment, as Figure 1 shown, the expansion component 6 includes an air pump 606 and a connecting plate 601 fixed to the driving end of the first linear driving device 4. An airbag 602 is fixed to the side of the connecting plate 601 close to the fixed seat 2. The air outlet end of the air pump 606 is connected to the airbag 602 through a hose 603. When fixing the throttle, the throttle should be placed on the top of the fixed seat 2. Then, the pressing-down component 3 is used to press down the throttle, so as to fix the throttle on the top of the fixed seat 2 and ensure that the gear cavity of the throttle points to the airbag 602. At this time, the first linear driving device 4 works, moves the airbag 602 until the connecting plate 601 contacts the outer side of the gear cavity of the throttle. At this time, the airbag 602 will be located in the gear cavity. Subsequently, the air pump 606 works, and the airbag 602 is inflated through the hose 603, so that the airbag 602 expands and bulges, thereby plugging the gear cavity of the throttle, and then facilitating the personnel to detect the air flow rate of the throttle. Moreover, during the plugging process, the shape of the airbag 602 after expansion will match the gear cavity. Therefore, the plugging effect is good and it can be reused repeatedly for a long time.

[0027] Among them, as Figure 1An exhaust valve 605 is provided on the shown hose 603. When it is necessary to reset the airbag 602, first open the exhaust valve 605, so that the gas in the airbag 602 is discharged through the exhaust valve 605; a pressure gauge 604 is also provided on the hose 603. Through the pressure gauge 604, the pressure condition in the airbag 602 can be known, and it is necessary to ensure that the pressure in the airbag 602 is greater than the pressure inside it during throttle detection.

[0028] Among them, as Figure 2 and Figure 3 shown, a buffer pad 8 is provided at the edge where the airbag 602 is connected to the connecting plate 601. The buffer pad 8 includes a flat pad 801 fixed on the connecting plate 601. The cross-section of the flat pad 801 is rectangular. A triangular pad 802 is connected between the buffer pad 8 and the outer side wall of the airbag 602. The cross-section of the triangular pad 802 is triangular. When the connecting plate 601 contacts the side surface of the throttle gear cavity, the buffer pad 8 can play a buffering role. Moreover, when the airbag 602 is in an uninflated state, since the triangular pad 802 has a certain contact surface with the edge of the airbag 602, it can play a positioning role for the airbag 602 to prevent the airbag 602 from dropping too much when uninflated.

[0029] Among them, as Figure 2 shown, a through hole 6011 is provided on the side surface of the connecting plate 601 opposite to the airbag 602. One end of the hose 603 passes through the through hole 6011 and is connected to the airbag 602 to prevent the hose 603 from infecting the airbag 602 and entering the gear cavity of the throttle.

[0030] Among them, the pressing component 3 includes a second linear driving device 302 and a pressing block 301 fixed on the output end of the second linear driving device 302. Both the second linear driving device 302 and the first linear driving device 4 are cylinders. The second linear driving device 302 can drive the pressing block 301 to descend, so as to press and fix the throttle to the fixing seat 2.

[0031] Among them, this tooling further includes a fixing frame 1. The pressing component 3 and the fixing seat 2 are fixed on the fixing frame 1, and the first linear driving device 4 is fixed on the fixing frame 1 through a fixing plate 5.

[0032] Working principle: First, place the throttle valve on the top of the fixed seat 2, and ensure that the gear cavity of the throttle valve is aligned with the airbag 602. Then, control the second linear driving device 302 to work, so that it drives the pressing block 301 to press down the throttle valve, thereby fixing the throttle valve on the fixed seat 2. Next, control the first linear driving device 4 to work, so that it moves the airbag 602 until the connecting plate 601 contacts the outer side of the gear cavity of the throttle valve. At this time, the airbag 602 will be located in the gear cavity. Then, control the air pump 606 to work, so that it inflates the airbag 602 through the hose 603, causing the airbag 602 to expand and bulge, thereby blocking the gear cavity of the throttle valve, and then facilitating personnel to detect the air flow rate of the throttle valve. When the throttle valve detection is completed, the personnel open the exhaust valve 605, so that the gas in the airbag 602 is discharged through the exhaust valve 605, and then the airbag 602 no longer contacts the gear cavity of the throttle valve tightly, so as to facilitate the removal of the airbag 602 from the gear cavity of the throttle valve through the first linear driving device 4.

[0033] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A throttle tooling with a gear cavity blocking structure, comprising a fixing seat (2), characterized in that: A pressing component (3) is arranged on the top of the fixing seat (2), and a first linear drive device (4) is arranged on one side of the fixing seat (2). The driving end of the first linear drive device (4) points to the fixing seat (2) and is connected to an expansion component (6). The expansion component (6) is used to seal the gear cavity of the throttle valve after expansion.

2. The throttle tooling with a gear cavity blocking structure according to claim 1, characterized in that: The expansion assembly (6) comprises an air pump (606) and a connecting plate (601) fixed to the driving end of the first linear drive device (4); an air bag (602) is fixed to the side of the connecting plate (601) close to the fixing seat (2); and an air outlet end of the air pump (606) is connected to the air bag (602) via a hose (603).

3. The throttle tooling with a gear cavity blocking structure according to claim 2, characterized in that: The hose (603) is provided with an exhaust valve (605).

4. A throttle tooling with a gear cavity blocking structure according to claim 2 or 3, characterized in that: The hose (603) is also provided with a pressure gauge (604).

5. The throttle tooling with a gear cavity blocking structure according to claim 4, characterized in that: A buffer pad (8) is provided at the edge where the airbag (602) is connected to the connecting plate (601).

6. The throttle tooling with a gear cavity blocking structure according to claim 5, characterized in that: The buffer pad (8) comprises a flat pad (801) fixed on the connecting plate (601), and a triangular pad (802) is connected between the buffer pad (8) and the outer side wall of the airbag (602).

7. The throttle tooling with a gear cavity blocking structure according to claim 4, characterized in that: A through hole (6011) is provided on the side of the connection plate (601) opposite to the air bag (602), and one end of the hose (603) passes through the through hole (6011) and is connected to the air bag (602).

8. The throttle tooling with a gear cavity blocking structure according to claim 1, characterized in that: The pressing assembly (3) comprises a second linear drive device (302) and a pressing block (301) fixed on the output end of the second linear drive device (302).

9. The throttle tooling with a gear cavity blocking structure according to claim 1, characterized in that: It also comprises a fixing frame (1), the pressing assembly (3) and the fixing seat (2) are fixed on the fixing frame (1), and the first linear drive device (4) is fixed on the fixing frame (1) via a fixing plate (5).

Images