Air tightness detection equipment for harmonic speed reducer

Abstract

The utility model discloses an air tightness detection equipment used for harmonic wave speed reducer, relates to the detection equipment technology field, and comprises a device main body, a pressing block, a guide rail and a sliding seat, the top of the device main body is provided with an isolation cover, the interior of the isolation cover is provided with a fixed plate, the bottoms of the four ends of the fixed plate are connected with the top of the device main body through rod bodies, and the rod bodies are connected with the device main body. The air cylinder is embedded in the fixing plate. Firstly, the speed reducer body is placed on the sliding base. The driving motor is started through the control switch, the motor rotates the threaded rod, and then the sliding base is driven to move. The sliding seat slides along the two guide rails, so that the speed reducer body moves to the bottom of the pressing block; under the action of the air cylinder, the pressing plate moves downwards and presses the speed reducer body, and meanwhile an inner cavity of the pressing block communicates with the interior of the speed reducer body. Then, the ventilation pump pressurizes the interior of the speed reducer body so as to detect the sealing performance of the speed reducer body; in the whole operation process, the hand of an operator is prevented from stretching into the equipment, and the operation safety is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to an airtightness testing device for harmonic reducers. Background Technology

[0002] After production, speed reducers are typically tested for airtightness using testing equipment to ensure the sealing of their housings. A search reveals that Chinese Patent Publication No. CN109374237B discloses a pollution-free, rapid, automatic airtightness measurement device and method for RV speed reducers. While this device, with its upper sealing cover and fixed sealing base plate tightly attached to both sides of the RV speed reducer body to form a closed sealing cavity, can perform rapid, offline airtightness testing of the RV speed reducer without screw tightening or end-face sealing, and without causing damage or pollution to the speed reducer, its operation requires the user to place their hand under the upper pressure cover to position the speed reducer body. Accidental activation of the switch by the operator can easily result in hand injuries, thus reducing the device's safety during use. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an airtightness testing device for harmonic reducers, which solves the problem mentioned in the background art that existing devices pose a risk of hand pinching during use, thereby reducing the safety of the device during use.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an airtightness testing device for a harmonic reducer, comprising a main body, a pressure block, a guide rail, and a sliding seat. An isolation cover is mounted on the top of the main body, and a fixing plate is installed inside the isolation cover. The four ends of the fixing plate are connected to the top of the main body via rods. A cylinder is embedded inside the fixing plate, and a pressure block is fitted around the telescopic end of the cylinder's bottom. A first connection port and a second connection port are provided on one side of the pressure block. The first connection port is connected to an air pump via a hose, and the air pump is installed on one side of the isolation cover. The second connection port is connected to a pressure gauge detection end via a hose, and the pressure gauge is installed on the front of the isolation cover. A sliding seat is provided below the pressure block, and the bottom of the sliding seat is threadedly connected to a threaded rod. One end of the threaded rod is fitted around the output end of a drive motor, and the drive motor is installed inside the main body. A control button is installed on one end of the top of the main body for overall device control.

[0005] Preferably, the pressure block has a hollow internal structure and an open bottom. The internal cavity of the pressure block is connected to the first connection port and the second connection port, so that the air pump can deliver high-pressure gas to the closed cavity inside the reducer housing for pressure maintenance. The airtightness of the reducer housing is judged by detecting whether the air pressure inside the reducer changes through a pressure gauge.

[0006] Preferably, two guide rails are bolted to the top of the main body of the device, and the guide rails are slidably connected to the bottom of the sliding seat, which helps to ensure that the guide rail sliding seat can only move in a straight line.

[0007] Preferably, a fixing block is provided at one end of the guide rail. The bottom of the fixing block is welded to the top of the device body, and the inside of the fixing block is threadedly connected to the adjusting bolt. By setting a set bolt at one end of the guide rail to limit the sliding seat, when the sliding seat moves to the bottom of the pressure plate and aligns with it through the guide rail, one side will abut against one end of the set bolt. Thus, the set bolt enables the sliding seat to be accurately aligned with the bottom of the pressure plate.

[0008] Preferably, both the pressure block and the sliding seat surface are provided with annular protrusions, and the annular protrusions match the reducer port, which helps to ensure that the end faces of the reducer housing can be tightly fitted onto the pressure plate and the movable seat surface, thus maintaining good sealing inside the reducer housing.

[0009] Preferably, the pressure block has limit rods welded to its four ends at the top, and the limit rods are slidably connected to the inside of the fixed plate, so that the pressure plate can maintain stable up and down movement through the limit rods.

[0010] This invention provides an airtightness testing device for harmonic reducers. It has the following advantages:

[0011] (1) During the use of this device, the reducer body is first placed on the sliding seat; the drive motor is started by the control switch, the motor rotates the threaded rod, and then drives the sliding seat to move; the sliding seat slides along the two guide rails, so that the reducer body moves to the bottom of the pressure block; under the action of the cylinder, the pressure plate moves down and presses the reducer body, while making the internal cavity of the pressure block connected with the inside of the reducer body; then, the air pump pressurizes the inside of the reducer body to test its sealing performance; throughout the operation, the operator's hands are prevented from being put into the equipment, which significantly improves the safety of operation.

[0012] (2) The air tightness testing device for harmonic reducers limits the sliding seat by setting a set bolt at one end of the guide rail. When the sliding seat moves to the bottom of the pressure plate and aligns with the guide rail, one side will abut against one end of the set bolt. The set bolt enables the sliding seat to be accurately aligned with the bottom of the pressure plate. By rotating the set bolt, the set bolt can be moved back and forth through the external thread, thereby enabling the position of the base to be finely adjusted, which facilitates the calibration of the position of the base.

[0013] This solves the problem of the risk of hand injury when using existing devices, which reduces the safety of the device during use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the first and second connection ports of this utility model;

[0016] Figure 3 This is a schematic diagram of the set bolt structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the air pump structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the threaded rod structure of this utility model.

[0019] In the diagram, 1. Main body of the device; 2. Isolation cover; 3. Pressure gauge; 4. Control button; 5. Fixing plate; 6. Cylinder; 7. Pressure block; 8. First connection port; 9. Second connection port; 10. Adjusting bolt; 11. Fixing block; 12. Air pump; 13. Guide rail; 14. Drive motor; 15. Threaded rod; 16. Limiting rod; 17. Sliding seat. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] Please see Figure 1-5This utility model provides a technical solution: an airtightness testing device for a harmonic reducer, comprising a device body 1, a pressure block 7, a guide rail 13, and a sliding seat 17. An isolation cover 2 is installed on the top of the device body 1. A fixing plate 5 is installed inside the isolation cover 2. The four ends of the fixing plate 5 are connected to the top of the device body 1 via rods. A cylinder 6 is embedded inside the fixing plate 5. The bottom telescopic end of the cylinder 6 is fitted with the pressure block 7. A first connection port 8 and a second connection port 9 are provided on one side of the pressure block 7. The first connection port 8 is connected to the cylinder 6 via a flexible hose. Pump 12 is connected and installed on one side of the isolation cover 2. The second connection port 9 is connected to the detection end of the pressure gauge 3 through a hose. The pressure gauge 3 is installed on the front of the isolation cover 2. A sliding seat 17 is provided below the pressure block 7. The bottom of the sliding seat 17 is threadedly connected to the threaded rod 15. One end of the threaded rod 15 is fitted outside the output end of the drive motor 14. The drive motor 14 is installed inside the main body 1 of the device. A control button 4 is installed at one end of the top of the main body 1 of the device. The control button 4 is used for overall control of the equipment. The pressure block 7 has a hollow internal structure. The bottom is open, and the internal cavity of the pressure block 7 is connected to the first connection port 8 and the second connection port 9 respectively. Two guide rails 13 are bolted to the top of the main body 1. The guide rails 13 are slidably connected to the bottom of the sliding seat 17. When the device is in use, the reducer body is placed on the sliding seat 17, and the drive motor 14 is controlled by the control switch. The drive motor 14 drives the threaded rod 15 to rotate. The rotation of the threaded rod 15 drives the sliding seat 17 to move. The sliding seat 17 slides through the two guide rails 13, so that the reducer body on the top of the sliding seat 17 can move to the bottom of the pressure block 7. Then, under the action of the cylinder 6, the cylinder 6 can drive the pressure plate to move downward, so that the pressure plate can press the reducer body. At the same time, the internal cavity of the pressure block 7 can be connected to the inside of the reducer body. The air pump 12 can pressurize the inside of the reducer body to test the sealing performance. When using this device, the operator's hands are prevented from being put into the equipment, thus greatly improving the safety of the device during operation.

[0023] Example 2:

[0024] This utility model provides a technical solution: an airtightness testing device for a harmonic reducer. A fixing block 11 is provided at one end of the guide rail 13. The bottom of the fixing block 11 is welded to the top of the device body 1, and the fixing block 11 is threadedly connected to the adjusting bolt 10 inside. A set bolt is provided at one end of the guide rail to limit the sliding seat. The surfaces of the pressure block 7 and the sliding seat 17 are provided with annular protrusions, and the annular protrusions match the reducer port. Limiting rods 16 are welded to the four ends of the top of the pressure block 7, and the limiting rods 16 are slidably connected to the inside of the fixing plate 5. By providing a set bolt at one end of the guide rail 13 to limit the sliding seat 17, when the sliding seat 17 moves to the bottom of the pressure plate and aligns with it through the guide rail 13, one side will abut against one end of the set bolt. Thus, the set bolt can make the sliding seat 17 accurately aligned with the bottom of the pressure plate. By rotating the set bolt, the set bolt can move back and forth through the external thread, thereby allowing the position of the base to be finely adjusted, which facilitates the calibration of the base position.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An air tightness detecting apparatus for a harmonic reducer, characterized by: Including device body (1), briquetting (7), guide rail (13) and sliding seat (17), the device body (1) top is equipped with isolation cover (2), the isolation cover (2) is provided with fixed plate (5) inside, the fixed plate (5) four end bottom is connected with device body (1) top through the stem, the fixed plate (5) is embedded with air cylinder (6) inside, the air cylinder (6) bottom telescopic end is outside the sleeve of briquetting (7), the briquetting (7) one side is provided with first connecting port (8) and second connecting port (9), the first connecting port (8) is connected with air pump (12) through the hose, the air pump (12) is installed in isolation cover (2) one side, the second connecting port (9) is communicated with pressure gauge (3) detection end through the hose, the pressure gauge (3) is installed in the front of isolation cover (2), the briquetting (7) below is provided with sliding seat (17), the sliding seat (17) bottom is screw thread connection with threaded rod (15), the threaded rod (15) one end is sleeved in the external of drive motor (14) output, the drive motor (14) is installed in device body (1) inside, the device body (1) top one end is equipped with control button (4), the control button (4) is used for the overall control work of equipment.

2. The air tightness testing apparatus for a harmonic reducer according to claim 1, wherein: The briquetting (7) is hollow inside, and the briquetting (7) bottom is open, the briquetting (7) inside cavity is communicated with first connecting port (8) and second connecting port (9) respectively.

3. The air tightness testing apparatus for a harmonic reducer according to claim 1, wherein: The device body (1) top is equipped with two guide rails (13) through bolts, the guide rail (13) is slidably connected with the bottom of sliding seat (17).

4. The air tightness testing apparatus for a harmonic reducer according to claim 1, wherein: The guide rail (13) one end is provided with fixed block (11), the fixed block (11) bottom is welded with device body (1) top, and the fixed block (11) is internally screw thread connected with adjusting bolt (10).

5. The air tightness testing apparatus for a harmonic reducer according to claim 1, wherein: The briquetting (7) and sliding seat (17) surface are all provided with annular convex structure, and the annular convex structure is consistent with the port of speed reducer.

6. The air tightness testing apparatus for a harmonic reducer according to claim 1, wherein: The briquetting (7) top four ends are welded with limit rod (16), and the limit rod (16) is slidably connected with the inside of fixed plate (5).

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