Throttle valve gear cavity port grinding device

Abstract

The utility model discloses a throttle valve gear cavity port polishing device, which comprises a shaft body and a rotary driving device fixed at the top of a workbench, the shaft body comprises a first cylindrical part and a second cylindrical part, one end of the first cylindrical part is connected with the driving end of the rotary driving device, and the other end of the first cylindrical part is connected with the second cylindrical part. The diameter of the second cylindrical part is smaller than that of the first cylindrical part, the shaft body is sleeved with a flexible grinding piece along the outline, and a first fastening piece used for fixing the flexible grinding piece is arranged on the first cylindrical part. Compared with the prior art, the flexible polishing piece can be fixed to the periphery of the shaft body, the maximum length of the second fastening piece stretching into the gear cavity of the throttle valve is smaller than the diameter of the first cylindrical part, and therefore the shaft body located in the gear cavity occupies a small space, and when a person rotates the throttle valve, the flexible polishing piece can be fixed to the periphery of the shaft body. The throttle valve is not prone to colliding with a mechanism in the gear cavity, the rotatable freedom degree of the throttle valve can be increased, and the grinding quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of throttle processing, in particular to a throttle gear cavity port grinding device. Background Art

[0002] The throttle is an important valve that controls the air entering the engine. The throttle gear chamber is located inside the throttle mechanism, which is equipped with a series of gears and related mechanical transmission devices. These gears mesh with each other and can accurately transmit the power from the throttle control unit (such as a stepper motor or DC motor) to the throttle blade, thereby controlling the degree of its opening or closing.

[0003] Long-term use will cause dirt to accumulate on the inner wall of the throttle gear cavity. This dirt will destroy the smoothness of its surface. Using sandpaper to polish can effectively remove this dirt, restore the smoothness of the inner wall, reduce the resistance to air flow, and thus improve the engine's intake efficiency.

[0004] However, the existing grinding methods are all manual grinding, which is labor-intensive. If machine grinding is used, the sandpaper needs to be fixed on the rotating shaft. When the rotating shaft is inserted into the gear cavity of the throttle valve, the sandpaper is driven to rotate by the rotating shaft to generate a grinding force. However, the mechanism for fixing the sandpaper on the rotating shaft will increase the cross-sectional area of ​​the rotating shaft. Therefore, after the rotating shaft is inserted into the gear cavity of the throttle valve, it is necessary to avoid the collision between the sandpaper fixing mechanism and the internal mechanism of the gear cavity, which will cause the throttle valve to have less freedom of movement relative to the rotating shaft, affecting the grinding efficiency and quality. Utility Model Content

[0005] The main purpose of the present utility model is to provide a throttle gear cavity port grinding device, in which a flexible grinding piece can be fixed to the periphery of the shaft body, and the maximum length of the second fastener extending into the throttle gear cavity is less than the diameter of the first cylindrical portion. Therefore, the shaft body located inside the gear cavity occupies a smaller space, and when a person turns the throttle, it is not easy to collide with the mechanism inside the gear cavity, which can increase the rotational freedom of the throttle valve to ensure the grinding quality.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A throttle gear cavity port grinding device includes a shaft and a rotating drive device fixed to the top of a workbench, the shaft includes a first cylindrical portion and a second cylindrical portion, one end of the first cylindrical portion is connected to the driving end of the rotating drive device, and the other end is connected to the second cylindrical portion, the diameter of the second cylindrical portion is smaller than the diameter of the first cylindrical portion, the shaft is provided with a flexible grinding piece along the contour, a first fastener for fixing the flexible grinding piece is provided on the first cylindrical portion, and a second fastener for fixing the flexible grinding piece is provided on the second cylindrical portion, and the length of the second fastener is smaller than the diameter of the first cylindrical portion.

[0008] Furthermore, the first fastener includes a ring body threadedly connected to the periphery of the first cylindrical portion, and a fixing groove for accommodating the flexible grinding member is defined in the ring body.

[0009] Furthermore, a plurality of fixing screws are threadedly connected to the ring body and the fixing screws are once located in the fixing grooves.

[0010] Furthermore, the second fastener includes a shell with an open top, a threaded column fixed in the shell, a limiting groove for fixing the flexible grinding piece is formed between the threaded column and the inner wall of the shell, and a threaded hole matching the threaded column is formed at the bottom of the second cylindrical part.

[0011] Furthermore, a plurality of limiting screws are threadedly connected to the shell, and one end of the limiting screw is located in the limiting groove.

[0012] Furthermore, the first cylindrical portion and the second cylindrical portion are further provided with a truncated cone portion, wherein a large diameter end of the truncated cone portion is connected to the first cylindrical portion, and a small diameter end of the truncated cone portion is connected to the second cylindrical portion.

[0013] Furthermore, it also includes an air blowing component for cleaning the throttle valve.

[0014] Furthermore, the blowing assembly includes an air pump, and the air pump is connected to the air nozzle through a universal shaped hose.

[0015] Furthermore, the rotation drive device is a motor.

[0016] Furthermore, the flexible grinding member is sandpaper.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The flexible grinding piece of the present invention can be fixed to the periphery of the shaft body, and the maximum length of the second fastener extending into the throttle gear cavity is smaller than the diameter of the first cylindrical portion. Therefore, the shaft body located inside the gear cavity occupies a smaller space. When a person turns the throttle, it is not easy to collide with the mechanism inside the gear cavity. The throttle body can be increased in its rotational freedom to ensure the quality and efficiency of grinding.

[0019] When the flexible grinding piece of the present invention transitions from the first cylindrical portion to the second cylindrical portion, its converged portion can be tightly attached to the frustum portion, preventing the flexible grinding piece of the converged portion from not contacting the shaft body, so that when the converged portion contacts the throttle gear cavity, it can also be ground.

[0020] The universal shaped hose of the utility model can align the air jet nozzle with the polished throttle gear cavity, and the air pump can spray air through the air jet nozzle to clean the polishing residue in the throttle gear cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the overall structure of a throttle gear cavity port grinding device of the present utility model.

[0022] Figure 2 This is an exploded schematic diagram of a shaft body, a first fastener and a second fastener of a throttle gear cavity port grinding device of the present invention.

[0023] Figure 3 This is a cross-sectional schematic diagram of the connection between the shaft, the first fastener and the second fastener of a throttle gear cavity port grinding device of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the second fastener of a throttle gear cavity port grinding device of the present utility model.

[0025] Figure 5 This is a schematic structural diagram of the first fastener of a throttle gear cavity port grinding device of the utility model.

[0026] In the figure: 1. workbench; 2. rotary drive device; 3. flexible grinding part; 4. shaft; 401. first cylindrical portion; 402. frustum portion; 403. second cylindrical portion; 4031. threaded hole; 5. air nozzle; 6. universal shaping hose; 7. air pump; 8. second fastener; 801. housing; 802. threaded column; 803. limit screw; 804. limit groove; 9. first fastener; 901. ring body; 902. fixing groove; 903. fixing screw. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] like Figure 1-5 As shown, a throttle gear cavity port grinding device includes a shaft body 4 and a rotary drive device 2 fixed on the top of a workbench 1, the shaft body 4 includes a first cylindrical portion 401 and a second cylindrical portion 403, one end of the first cylindrical portion 401 is connected to the driving end of the rotary drive device 2, and the other end is connected to the second cylindrical portion 403, the diameter of the second cylindrical portion 403 is smaller than the diameter of the first cylindrical portion 401, the shaft body 4 is provided with a flexible grinding piece 3 along the contour, the first cylindrical portion 401 is provided with a first fastener 9 for fixing the flexible grinding piece 3, the second cylindrical portion 403 is provided with a second fastener 8 for fixing the flexible grinding piece 3, and the length of the second fastener 8 is smaller than the diameter of the first cylindrical portion 401.

[0029] In this embodiment, the rotary drive device 2 is a motor, and the flexible polishing member 3 is sandpaper. First, the flexible polishing member 3 is curled around the outer periphery of the shaft body 4 and matches the contour of the shaft body 4. Therefore, the end of the flexible polishing member 3 is bundled. At this time, the first fastener 9 fixes the flexible polishing member 3 located outside the first cylindrical portion 401, and the second fastener 8 fixes the flexible polishing member 3 located outside the second cylindrical portion 403. Therefore, the flexible polishing member 3 is tightly fixed to the outer periphery of the shaft body 4. When it is necessary to polish the port of the throttle gear cavity, the rotary drive device should be controlled. 2 works to drive the shaft body 4 to rotate, thereby rotating the flexible grinding piece 3. At this time, the person holds the throttle, so that the shaft body 4 extends into the throttle gear cavity, and ensures that the flexible grinding piece 3 on the outer periphery of the shaft body 4 contacts the internal port of the gear cavity to perform the grinding operation. During the grinding operation, since the length of the second fastener 8 is smaller than the diameter of the first cylindrical portion 401, the shaft body 4 located inside the gear cavity occupies a smaller space. When the person turns the throttle, it is not easy to collide with the mechanism inside the gear cavity, thereby ensuring the grinding quality.

[0030] like Figure 2 、 Figure 3 and Figure 5 As shown, the first fastener 9 includes a ring body 901 threadedly connected to the outer periphery of the first cylindrical portion 401, and a fixing groove 902 for accommodating the flexible grinding member 3 is provided in the ring body 901. A number of fixing screws 903 are threadedly connected to the ring body 901 and once the fixing screws 903 are located in the fixing groove 902, an external thread is provided on the circumferential surface of the first cylindrical portion 401, and a matching internal thread is provided on the inner side of the ring body 901. Therefore, the ring body 901 can be fixed to the first cylindrical portion 401, and an accommodating cavity is formed between the fixing groove 902 and the first cylindrical portion 401. The end of the flexible grinding member 3 located on the outer periphery of the first cylindrical portion 401 will be located in this accommodating cavity, and the fixing screws 903 can resist this part of the flexible grinding member 3, thereby fixing the flexible grinding member 3 to the outer periphery of the first cylindrical portion 401.

[0031] like Figure 2 、 Figure 3 and Figure 4As shown, the second fastener 8 includes a shell 801 with an opening at the top, and a threaded column 802 is fixed in the shell 801. A limiting groove 804 for fixing the flexible grinding member 3 is formed between the threaded column 802 and the inner wall of the shell 801. A threaded hole 4031 matching the threaded column 802 is provided at the bottom of the second cylindrical portion 403. Several limiting screws 803 are threadedly connected to the shell 801. One end of the limiting screw 803 is located in the limiting groove 804. After the threaded column 802 is screwed into the threaded hole 4031, an annular groove is also formed between the limiting groove 804 and the second cylindrical portion 403. The end of the flexible grinding member 3 located on the outer periphery of the second cylindrical portion 403 can be located in this annular groove, and the limiting screw 803 can press against this part of the flexible grinding member 3, thereby fixing the flexible grinding member 3. At this time, both ends of the flexible grinding member 3 are fixed, so that the flexible grinding member 3 can be stably fixed on the shaft body 4.

[0032] like Figure 1 and Figure 2 As shown, the first cylindrical portion 401 and the second cylindrical portion 403 are also provided with a conical portion 402, the large diameter end of the conical portion 402 is connected to the first cylindrical portion 401, and the small diameter end is connected to the second cylindrical portion 403, so that when the flexible grinding piece 3 transitions from the first cylindrical portion 401 to the second cylindrical portion 403, its converged portion can be close to the conical portion 402, avoiding the flexible grinding piece 3 in the converged portion from not contacting the shaft 4.

[0033] It also includes a blowing component for cleaning the throttle valve, which includes an air pump 7. The air pump 7 is connected to the air nozzle 5 through a universal shaping hose 6. The air nozzle 5 can be aimed at the polished throttle gear cavity through the universal shaping hose 6. The air pump 7 will spray air through the air nozzle 5 to clean the polishing residue in the throttle gear cavity.

[0034] Working principle: first, the flexible grinding piece 3 is curled around the outer periphery of the shaft body 4 and matched with the contour of the shaft body 4. At this time, the ring body 901 can be threadedly connected to the outer periphery of the first cylindrical part 401, and a receiving cavity is formed between the fixing groove 902 and the first cylindrical part 401. The end of the flexible grinding piece 3 located on the outer periphery of the first cylindrical part 401 will be located in this receiving cavity, and the fixing screw 903 can press against this part of the flexible grinding piece 3, thereby fixing the flexible grinding piece 3 to the outer periphery of the first cylindrical part 401, and after the threaded column 802 is screwed into the threaded hole 4031, the shell 801 is fixed on the second cylindrical part 403, and an annular groove is also formed between the limiting groove 804 and the second cylindrical part 403. The end of the flexible grinding piece 3 located on the outer periphery of the second cylindrical part 403 can be located in this annular groove, and the limiting screw 803 can The flexible grinding piece 3 is pressed against this part, thereby fixing the flexible grinding piece 3. At this time, both ends of the flexible grinding piece 3 are fixed, so that the flexible grinding piece 3 can be stably fixed on the shaft body 4. In the next step, the rotation drive device 2 is controlled to work so that it drives the shaft body 4 to rotate, thereby rotating the flexible grinding piece 3. At this time, the personnel holds the throttle so that the shaft body 4 extends into the throttle gear cavity, and ensures that the flexible grinding piece 3 on the outside of the shaft body 4 is in contact with the internal port of the gear cavity for grinding operation. During the grinding operation, since the length of the second fastener 8 is smaller than the diameter of the first cylindrical portion 401, the shaft body 4 located inside the gear cavity occupies a smaller space. When the personnel turns the throttle, it is not easy to collide with the mechanism inside the gear cavity, thereby increasing the movable angle of the throttle and ensuring the grinding quality.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A throttle gear cavity port grinding device, comprising a shaft (4) and a rotary drive device (2) fixed to the top of a workbench (1), characterized in that: The shaft body (4) comprises a first cylindrical portion (401) and a second cylindrical portion (403), one end of the first cylindrical portion (401) is connected to the driving end of the rotary drive device (2), and the other end is connected to the second cylindrical portion (403), the diameter of the second cylindrical portion (403) is smaller than the diameter of the first cylindrical portion (401), the shaft body (4) is provided with a flexible grinding piece (3) along the contour, the first cylindrical portion (401) is provided with a first fastener (9) for fixing the flexible grinding piece (3), the second cylindrical portion (403) is provided with a second fastener (8) for fixing the flexible grinding piece (3), and the length of the second fastener (8) is smaller than the diameter of the first cylindrical portion (401).

2. A throttle gear cavity port polishing device according to claim 1, characterized in that: The first fastener (9) comprises a ring body (901) threadedly connected to the periphery of the first cylindrical portion (401), and a fixing groove (902) for accommodating the flexible grinding member (3) is provided in the ring body (901).

3. The throttle gear cavity port polishing device according to claim 2, characterized in that: The ring body (901) is threadedly connected with a plurality of fixing screws (903), and the fixing screws (903) are once located in the fixing grooves (902).

4. A throttle gear cavity port polishing device according to any one of claims 1 to 3, characterized in that: The second fastener (8) comprises a shell (801) with an opening at the top, a threaded column (802) being fixed in the shell (801), a limiting groove (804) for fixing the flexible grinding member (3) being formed between the threaded column (802) and the inner wall of the shell (801), and a threaded hole (4031) matching the threaded column (802) being formed at the bottom of the second cylindrical portion (403).

5. The throttle gear cavity port polishing device according to claim 4, characterized in that: A plurality of limiting screws (803) are threadedly connected to the housing (801), and one end of the limiting screw (803) is located in the limiting groove (804).

6. The throttle gear cavity port polishing device according to claim 5, characterized in that: The first cylindrical portion (401) and the second cylindrical portion (403) are further provided with a truncated cone portion (402), wherein the large diameter end of the truncated cone portion (402) is connected to the first cylindrical portion (401) and the small diameter end is connected to the second cylindrical portion (403).

7. The throttle gear cavity port polishing device according to claim 5, characterized in that: Also included is an air blowing assembly for cleaning the throttle valve.

8. The throttle gear cavity port polishing device according to claim 7, characterized in that: The air blowing assembly comprises an air pump (7), and the air pump (7) is connected to the air nozzle (5) via a universal shaped hose (6).

9. The throttle gear cavity port polishing device according to claim 1, characterized in that: The rotary drive device (2) is a motor.

10. The throttle gear cavity port polishing device according to claim 1, characterized in that: The flexible grinding piece (3) is sandpaper.

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