Power takeoff air tightness detection tool

Abstract

The utility model discloses an air tightness detection tool for a power takeoff. The air tightness detection tool comprises a frame body, a water tank, a lifting frame, a lifting driving mechanism, a supporting platform, a positioning jig, a transverse driving mechanism and a pressing mechanism, wherein the water tank is arranged in the frame body and is used for storing water; the lifting frame is arranged below the water tank; the lifting driving mechanism is connected with the lifting frame and can drive the lifting frame to move up and down, and the water tank moves along with the lifting frame; the supporting platform is connected with the frame body; the positioning jig is connected with the frame body and is used for positioning the power takeoff; the transverse driving mechanism is arranged on the supporting platform, the output end of the transverse driving mechanism is connected with the positioning jig, and the positioning jig can be driven to transversely move. The pressing mechanism is arranged on the supporting platform and used for pressing the power takeoff on the positioning jig. The device is high in automation degree, greatly reduces the labor intensity of workers, and improves the detection efficiency and the detection effect.

Description

Technical Field

[0001] This utility model relates to the field of power take-off air tightness testing technology, and in particular to a power take-off air tightness testing fixture. Background Technology

[0002] With the rapid development of my country's economy, the demand for construction machinery products required for infrastructure projects is gradually increasing. Power take-off (PTO) assemblies, as compatible products for engine power output, are widely used due to their low cost and reliable performance. Their working principle is as follows: after assembling the gear shaft with bearings, housing, flanges, and other related components, it is fixed to the engine and meshes with the gear train for power output. Because the bearings bear loads and rotate at high speeds, lubrication is required. The necessary lubricating oil enters the PTO's inner cavity through an oil hole in the housing shaft diameter. To prevent lubricating oil from leaking to the outside of the PTO through the oil seal flange, the PTO is designed with a sealing element, namely a rotating shaft oil seal, to seal the lubricating oil. To ensure sealing performance and effectiveness, the PTO undergoes an airtightness test before leaving the factory as a preventative measure against oil seal leakage. In existing technologies, the sealing plate is often manually clamped to the lower end of the PTO using an elbow clamp before the airtightness test is performed. This method is inefficient and yields unsatisfactory results. Summary of the Invention

[0003] Regarding the problems of low detection efficiency and unsatisfactory detection results in the existing solutions described in the background section above, a power take-off air tightness testing fixture is designed to solve the above technical problems.

[0004] According to an embodiment of the present invention, a power take-off (PTO) airtightness testing fixture is provided, comprising:

[0005] Frame;

[0006] A water tank, housed within the frame, is used for water storage.

[0007] The lifting frame is located below the water tank.

[0008] The lifting drive mechanism is connected to the lifting frame and can drive the lifting frame to move up and down, and the water tank follows the movement of the lifting frame.

[0009] Support platform, which is connected to the frame;

[0010] Positioning fixture, which is connected to the frame, is used for positioning the power take-off.

[0011] A lateral drive mechanism is set on the support platform, and its output end is connected to the positioning fixture, which can drive the positioning fixture to move laterally.

[0012] The clamping mechanism is set on the support platform and is used to clamp the power take-off onto the positioning fixture.

[0013] Furthermore, the lifting drive mechanism includes: at least one lifting drive cylinder and several guide rods;

[0014] The output end of the lifting drive cylinder is connected to the lifting frame, which can drive the lifting frame to move up and down;

[0015] The guide rod is mounted on the frame and is slidably connected to the lifting frame.

[0016] Furthermore, the positioning fixture is provided with a positioning protrusion, and the lower end of the power take-off can be fitted onto the positioning protrusion and tightly connected to the positioning fixture.

[0017] Furthermore, a sealing ring is fitted on the outer side of the positioning protrusion.

[0018] Furthermore, the positioning fixture is also equipped with a vent hole, one end of which extends through to the positioning protrusion, and the other end is connected to the air pump.

[0019] Furthermore, the lateral drive mechanism includes: a lateral drive cylinder and a pair of slide rails;

[0020] The transverse drive cylinder is mounted on the support platform, and its output end is connected to the positioning fixture;

[0021] A pair of slide rails are arranged in parallel on the support platform, and the positioning fixture is slidably connected to the pair of slide rails.

[0022] Furthermore, positioning sensors are installed at both ends of the slide rail.

[0023] Furthermore, a drain pipe is installed on one side of the water tank, and a control valve is installed on the drain pipe.

[0024] Furthermore, the clamping mechanism includes: a support frame, a clamping cylinder, and clamping components;

[0025] The support frame is fixedly connected to the support platform;

[0026] The clamping cylinder is mounted on the support frame, and its output end is connected to the clamping component, which can drive the clamping component to move up and down.

[0027] The power take-off air tightness testing fixture according to the embodiments of this utility model has a high degree of automation, which greatly reduces the labor intensity of workers and improves the testing efficiency and test results.

[0028] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0029] Figure 1 This is a perspective view according to an embodiment of the present utility model;

[0030] Figure 2This is a schematic diagram of the internal structure according to an embodiment of the present utility model;

[0031] Figure 3 for Figure 2 Enlarged view of point A;

[0032] Figure 4 for Figure 2 The main view;

[0033] Figure 5 This is a schematic diagram of the positioning fixture according to an embodiment of the present utility model. Detailed Implementation

[0034] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0035] First, combine Figures 1-5 The present invention describes a power take-off (PTO) air tightness testing fixture according to an embodiment of the present invention, which is used for PTO air tightness testing and has a wide range of applications.

[0036] like Figures 1-5 As shown, the power take-off air tightness testing fixture of this utility model embodiment includes:

[0037] Frame 1;

[0038] Water tank 2 is installed inside frame 1 and is used for water storage;

[0039] Lifting frame 3 is located below water tank 2;

[0040] The lifting drive mechanism 4 is connected to the lifting frame 3 and can drive the lifting frame 3 to move up and down. The water tank 2 moves with the lifting frame 3.

[0041] Support platform 5 is connected to frame 1 via connecting rod 51;

[0042] Positioning fixture 6 is connected to frame 1 and is used for positioning power take-off 9;

[0043] The transverse drive mechanism 8 is mounted on the support platform 5, and its output end is connected to the positioning fixture 6, which can drive the positioning fixture 6 to move laterally.

[0044] The clamping mechanism 7 is installed on the support platform 5 and is used to clamp the power take-off 9 onto the positioning fixture 6.

[0045] Furthermore, such as Figure 2 As shown, in this embodiment, the lifting drive mechanism 4 includes: at least one lifting drive cylinder 41 and a plurality of guide rods 42;

[0046] The output end of the lifting drive cylinder 41 is connected to the lifting frame 3, which can drive the lifting frame 3 to move up and down.

[0047] The guide rod 42 is installed on the frame 1 and is slidably connected to the lifting frame 3, playing a guiding role during the lifting process of the lifting frame 3.

[0048] Furthermore, such as Figure 3 , 5 As shown, in this embodiment, the positioning fixture 6 is provided with a positioning protrusion 61. The shape of the positioning protrusion 61 is coupled with the lower part of the power take-off 9, which is used to position the power take-off 9 and prevent the power take-off 9 from moving left and right. The lower end of the power take-off 9 can be sleeved on the positioning protrusion 61 and tightly connected with the positioning fixture 6.

[0049] Furthermore, such as Figure 3 , 5 As shown, in this embodiment, a sealing ring 62 is sleeved on the outside of the positioning protrusion 61, and the sealing ring 62 makes the power take-off 9 and the positioning fixture 6 better sealed.

[0050] Furthermore, such as Figure 3 , 5 As shown, in this embodiment, the positioning fixture 6 is also provided with a vent hole 63. One end of the vent hole 63 extends through to the positioning protrusion 61, and the other end is connected to the air pump. During the air tightness test, the air pump fills the power take-off 9 with air through the vent hole 63.

[0051] Furthermore, such as Figure 3 As shown, in this embodiment, the lateral drive mechanism 8 includes: a lateral drive cylinder 81 and a pair of slide rails 82;

[0052] The transverse drive cylinder 81 is mounted on the support platform 5, and its output end is connected to the positioning fixture 6;

[0053] A pair of slide rails 82 are arranged in parallel on the support platform 5, and the positioning fixture 6 is slidably connected to the pair of slide rails 82;

[0054] The transverse drive cylinder 81 can drive the positioning fixture 6 to reciprocate along the slide rail 82.

[0055] Furthermore, such as Figures 3-4 As shown, in this embodiment, position sensors 83 are respectively provided at both ends of the slide rail 82 to detect the position of the positioning fixture 6.

[0056] Furthermore, in this embodiment, a drain pipe is provided on one side of the water tank 2 to facilitate drainage, and a control valve is provided on the drain pipe to control the opening and closing of the drain pipe.

[0057] Furthermore, such as Figure 2 , 4As shown, in this embodiment, the clamping mechanism 7 includes: a support frame 71, a clamping cylinder 72, and a clamping member 73;

[0058] The support frame 71 is fixedly connected to the support platform 5;

[0059] The clamping cylinder 72 is mounted on the support frame 71, and its output end is connected to the clamping member 73. It can drive the clamping member 73 to move up and down, so that the clamping member 73 clamps the power take-off 9.

[0060] Working principle: First, fill the water tank 2 with water; then, attach the power take-off (PTO) 9 to the positioning protrusion 61, and drive the positioning fixture 6 to move below the support frame 71 using the horizontal drive cylinder 81. Then, drive the clamping component 73 to clamp the PTO 9 using the clamping cylinder 72. Next, drive the lifting frame 3 to rise until the water in the water tank 2 overflows the PTO 9. Then, the air pump inflates the PTO 9 through the vent 63, and the air tightness of the PTO 9 is determined by observing whether the water bubbles.

[0061] Above, refer to Figures 1-5 The present invention describes a power take-off air tightness testing fixture according to an embodiment of the present invention. It has a high degree of automation, which greatly reduces the labor intensity of workers and improves testing efficiency and testing effect.

[0062] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0063] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A power take-off (PTO) airtightness testing fixture, characterized in that, Include: Frame; A water tank, which is disposed within the frame, is used for storing water; A lifting frame is disposed below the water tank; A lifting drive mechanism is connected to the lifting frame, which can drive the lifting frame to move up and down, and the water tank moves with the lifting frame; Support platform, which is connected to the frame; A positioning fixture, which is connected to the frame, is used for positioning the power take-off. A lateral drive mechanism is provided on the support platform, and its output end is connected to the positioning fixture, which can drive the positioning fixture to move laterally. A clamping mechanism is provided on the support platform and is used to clamp the power take-off onto the positioning fixture.

2. The power take-off airtightness testing fixture as described in claim 1, characterized in that, The lifting drive mechanism includes: at least one lifting drive cylinder and several guide rods; The output end of the lifting drive cylinder is connected to the lifting frame, which can drive the lifting frame to move up and down. The guide rod is mounted on the frame and is slidably connected to the lifting frame.

3. The power take-off airtightness testing fixture as described in claim 1, characterized in that, The positioning fixture is provided with a positioning protrusion, and the lower end of the power take-off can be sleeved on the positioning protrusion and tightly connected to the positioning fixture.

4. The power take-off airtightness testing fixture as described in claim 3, characterized in that, A sealing ring is fitted on the outer side of the positioning protrusion.

5. The power take-off airtightness testing fixture as described in claim 3, characterized in that, The positioning fixture is also provided with a vent hole, one end of which extends through the positioning protrusion and the other end is connected to an air pump.

6. The power take-off airtightness testing fixture as described in claim 1, characterized in that, The lateral drive mechanism includes: a lateral drive cylinder and a pair of slide rails; The transverse drive cylinder is mounted on the support platform, and its output end is connected to the positioning fixture. The pair of slide rails are arranged in parallel on the support platform, and the positioning fixture is slidably connected to the pair of slide rails.

7. The power take-off airtightness testing fixture as described in claim 6, characterized in that, Position sensors are installed at both ends of the slide rail.

8. The power take-off airtightness testing fixture as described in claim 1, characterized in that, A drain pipe is installed on one side of the water tank, and a control valve is installed on the drain pipe.

9. The power take-off airtightness testing fixture as described in claim 1, characterized in that, The clamping mechanism includes: a support frame, a clamping cylinder, and a clamping component; The support frame is fixedly connected to the support platform; The clamping cylinder is mounted on the support frame, and its output end is connected to the clamping component, which can drive the clamping component to move up and down.

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