A kind of gear reducer worm wheel box air tightness detection device

Abstract

The utility model discloses a kind of worm wheel box air tightness detection devices of speed reducer, it is related to the detection field of worm wheel box of speed reducer, and its technical solution main point is: including the clamping mechanism for clamping and sealing on the upper and lower two sides of worm wheel box of speed reducer, the bottom of the clamping mechanism is fixed with support table, the side portion of support table is equipped with push mechanism, effect is through electric hydraulic rod, electric push mechanism realizes the automation linkage of clamping, plugging process, replaces the complicated operation of manual step-by-step completion clamping, hole-by-hole plugging, manual butt joint gas pipeline in prior art, small plug on clamping plate completes upper and lower orientation aperture plugging, small plug on side plate and large plug cooperate to complete side aperture and large opening plugging, air inlet pipe and detector integrated design let gas and detection carry out synchronously, effectively solve the problems of existing detection operation troublesome, artificial time-consuming and labor-consuming, easy to be affected by operation difference Influence coherence, low detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer worm gear box testing, and more specifically, it relates to a speed reducer worm gear box airtightness testing device. Background Technology

[0002] As a core component of mechanical transmission systems, worm gearboxes are widely used in industrial machinery, transportation, engineering machinery, and other fields. They are typically filled with lubricating oil to lubricate and dissipate heat from gear transmission. Therefore, the airtightness of the worm gearbox directly determines the stability and service life of the equipment. If the airtightness is poor and leakage occurs, it will not only lead to the loss of lubricating oil and accelerated wear of transmission components, but may also cause internal structural jamming and damage due to the entry of external impurities into the gearbox, resulting in equipment failure. Therefore, after the production and assembly of the worm gearbox, airtightness testing is an essential quality control procedure.

[0003] Currently, the existing airtightness testing operation for gearboxes is significantly inconvenient. The testing process requires manual operation of steps such as clamping, sealing, and air supply, which is cumbersome and troublesome. It not only consumes a lot of manual time and energy, but also easily affects the continuity of testing due to differences in manual operation, resulting in low testing efficiency and failing to meet the high-efficiency testing requirements of large-scale production.

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a device for testing the air tightness of a reducer worm gear box. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a device for testing the air tightness of a reducer worm gear box.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for testing the air tightness of a reducer worm gear box, comprising a clamping mechanism for clamping and sealing the upper and lower surfaces of the reducer worm gear box, a support platform fixedly mounted at the bottom of the clamping mechanism, a pushing mechanism mounted on the side of the support platform, the power output end of the pushing mechanism being connected to a side plate and driving the side plate to move linearly toward the reducer worm gear box, a large plug being provided on the side of the side plate facing the reducer worm gear box, the large plug being adapted to the large opening of the reducer worm gear box for the transmission shaft to extend out, for sealing the large opening, an air inlet pipe being embedded and fixed inside the large plug, one end of the air inlet pipe penetrating the side plate horizontally and used to connect to an external air supply pipe to input gas into the reducer worm gear box, the other end of the air inlet pipe extending into the reducer worm gear box along with the large plug, and an air tightness testing device being installed on the extended section of the air inlet pipe.

[0007] Preferably, the clamping mechanism includes a lower clamping plate and an upper clamping plate, wherein the upper clamping plate is driven downward by an electro-hydraulic rod to cooperate with the lower clamping plate to clamp the worm gear box of the reducer.

[0008] Preferably, the contact surfaces of the upper clamping plate and the lower clamping plate are provided with grooves that are matched with the worm gear box of the reducer.

[0009] Preferably, the lower clamping plate, the upper clamping plate, and the side plate are all provided with a plurality of small plugs for sealing the gaps on the worm gear box of the reducer.

[0010] Preferably, the pushing mechanism includes an upper open shell fixed to the side of the support platform, and a lead screw driven by a motor is installed inside the upper open shell. A rod sleeve is threadedly connected to the outer side wall of the lead screw. A guide rail is installed on the inner bottom wall of the upper open shell. The bottom of the rod sleeve is slidably connected to the guide rail by a slider, and its top is connected to the side plate by an L-shaped plate.

[0011] Preferably, a cast iron counterweight base is fixedly connected to the bottom of the support platform, and the top of the cast iron counterweight base is connected to an electro-hydraulic rod through a support plate.

[0012] Preferably, the outer wall of the extension section of the intake pipe is provided with a plurality of exhaust holes surrounding the intake pipe. The air tightness detection device is installed at the end of the extension section of the intake pipe and includes a pressure sensor and a pressure sensing probe. The pressure sensor and the pressure sensing probe are electrically connected and can detect the pressure change inside the worm gear box of the reducer in real time to determine its air tightness.

[0013] Preferably, the intake pipe is equipped with a one-way valve.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model achieves automated linkage of clamping and sealing processes through electric hydraulic rods and electric push mechanisms, replacing the cumbersome manual operation of clamping, sealing hole by hole, and manually connecting gas pipelines in the prior art. Small plugs on the clamping plate seal the upper and lower holes, while small plugs on the side plate cooperate with large plugs to seal the side holes and large openings. The integrated design of the air inlet pipe and detection device allows gas delivery and detection to be carried out simultaneously, effectively solving the problems of cumbersome detection operation, time-consuming and labor-intensive manual operation, easy to affect the continuity due to operation differences, and low detection efficiency in the past.

[0016] 2. The cast iron counterweight base in this utility model has a high density and sufficient weight, which can significantly improve the overall stability of the device's center of gravity.

[0017] 3. When the external gas supply pipe delivers gas to the worm gear box of the reducer through the air inlet pipe, the one-way valve opens smoothly to ensure that the gas is stably delivered to the box. During the test or after the gas supply stops, the one-way valve can close quickly to effectively prevent the gas in the worm gear box from flowing back to the air inlet pipe and the external gas supply pipe, thus avoiding the loss of gas pressure in the box and causing deviations in the test results.

[0018] 4. The multiple circumferential exhaust holes on the outer wall of the air inlet pipe extension section of this utility model can make the gas evenly diffuse to all corners of the box, avoiding local pressure unevenness that could lead to misjudgment by the airtightness detection device. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged view of the local structure of A;

[0022] Figure 3 This utility model Figure 1 Another perspective on the specific structure;

[0023] Figure 4 This is a schematic diagram of the specific structure of the side of this utility model;

[0024] Figure 5 This is a schematic diagram of the rod sleeve connection structure in this utility model;

[0025] Figure 6 This utility model Figure 5 Enlarged view of the local structure of B.

[0026] In the diagram: 1. Clamping mechanism; 101. Lower clamping plate; 102. Upper clamping plate; 103. Electro-hydraulic rod; 104. Groove; 2. Support platform; 3. Cast iron counterweight base; 4. Electric push mechanism; 401. Upper open shell; 402. Lead screw; 403. Motor; 404. Rod sleeve; 405. Guide rail; 406. Slider; 407. L-shaped plate; 5. Side plate; 6. Large plug; 7. Air inlet pipe; 701. Exhaust port; 8. Air tightness detection device; 9. Small plug; 10. Support plate; 11. One-way valve. Detailed Implementation

[0027] like Figure 1-6As shown, this utility model provides an airtightness testing device for a reducer worm gear box, including a clamping mechanism 1 for clamping and sealing the upper and lower surfaces of the reducer worm gear box. A support platform 2 is fixedly mounted at the bottom of the clamping mechanism 1. An electric push mechanism 4 is installed on the side of the support platform 2. The power output end of the electric push mechanism 4 is connected to a side plate 5 and drives the side plate 5 to move linearly toward the reducer worm gear box. A large plug 6 is provided on the side of the side plate 5 facing the reducer worm gear box. The large plug 6 is adapted to the large opening of the reducer worm gear box for the transmission shaft to extend out and is used to seal the large opening. An air inlet pipe 7 is embedded and fixed inside the large plug 6. One end of the air inlet pipe 7 passes through the side plate 5 in a horizontal direction and is used to connect to an external air supply pipe to input gas into the reducer worm gear box. The other end of the air inlet pipe 7 extends into the reducer worm gear box along with the large plug 6, and an airtightness testing device 8 is installed on the extended section of the air inlet pipe 7.

[0028] The clamping mechanism 1 includes a lower clamping plate 101 and an upper clamping plate 102. The upper clamping plate 102 is driven downward by an electric hydraulic rod 103 to cooperate with the lower clamping plate 101 to clamp the reducer worm gear box. The contact surfaces of the upper clamping plate 102 and the lower clamping plate 101 are provided with grooves 104 that are matched with the reducer worm gear box. The lower clamping plate 101, the upper clamping plate 102 and the side plate 5 are provided with a number of small plugs 9 to seal the gaps on the reducer worm gear box. The outer wall of the extension section of the air inlet pipe 7 is provided with a number of exhaust holes 701 surrounding the air inlet pipe 7. The air tightness detection device 8 is installed at the end of the extension section of the air inlet pipe 7 and includes a pressure sensor and a pressure sensing probe. The pressure sensor and the pressure sensing probe are electrically connected and can detect the changes in air pressure inside the reducer worm gear box in real time to determine its air tightness.

[0029] This utility model of a gearbox worm gearbox airtightness testing device is specifically designed for a gearbox worm gearbox with a drive shaft extending from one side (such as a single-output-shaft horizontal gearbox worm gearbox). During operation, the worm gearbox to be tested is first placed on the lower clamping plate 101 of the clamping mechanism 1, ensuring that the opening for the drive shaft to extend from its side precisely faces the side plate 5. The electric hydraulic rod 103 is activated, driving the upper clamping plate 102 to move downwards, cooperating with the lower clamping plate 101 to firmly clamp the upper and lower surfaces of the worm gearbox. The grooves 104 on the contact surfaces of the lower clamping plate 101 and the upper clamping plate 102 can tightly fit the outer surfaces of the upper and lower surfaces of the worm gearbox. The shape not only improves clamping stability but also assists in sealing. Simultaneously, multiple small plugs 9 on the lower clamping plate 101 and upper clamping plate 102 automatically seal the oil holes, screw holes, and other openings on the upper and lower surfaces of the worm gear box, eliminating the need for manual sealing. Then, the electric push mechanism 4 on the side of the support platform 2 is activated. Its power output drives the side plate 5 to move linearly towards the worm gear box, allowing the large plug 6 on the side plate 5 to precisely embed into the large opening on the side of the worm gear box for the drive shaft to extend, completing the sealing. Simultaneously, the small plugs 9 on the side plate 5 simultaneously seal the remaining openings on the side of the worm gear box, achieving precise sealing of all openings. Sealing; at this time, the air intake pipe 7, which penetrates the side plate 5 and is embedded in the large plug 6, is connected to the external air supply pipe. The gas is delivered to the inside of the worm gear box through the air intake pipe 7. The multiple circumferential exhaust holes 701 on the outer side wall of the air intake pipe 7 allow the gas to be evenly diffused to all corners of the box. The air tightness detection device 8 (including a pressure sensor and a pressure sensing probe, which are electrically connected) installed at the end of the air intake pipe 7 captures the changes in air pressure inside the box in real time. If the air pressure remains stable, it indicates that the air tightness is qualified. If the air pressure drops, there is a leakage problem. The whole process is achieved by clamping and sealing through the electric hydraulic rod 103 and the electric push mechanism 4. The automated linkage of the plugging process replaces the tedious manual operation of clamping, plugging hole by hole, and manually connecting the gas pipeline in the existing technology. The small plug 9 on the clamping plate completes the sealing of the upper and lower orifices, and the small plug 9 on the side plate 5 works with the large plug 6 to complete the sealing of the side orifices and large openings. The integrated design of the air inlet pipe 7 and the detection device 8 allows the gas delivery and detection to be carried out simultaneously. It effectively solves the problems of cumbersome detection operation, time-consuming and labor-intensive manual operation, easy to affect the continuity due to operation differences, and low detection efficiency. It is suitable for the batch detection needs of worm gear boxes with side drive shafts extending out, such as single output shafts, and meets the requirements of large-scale production.

[0030] The present invention also provides a specific structure of the pushing mechanism 4: the pushing mechanism 4 includes an upper open shell 401 fixed to the side of the support platform 2, and a lead screw 402 driven by a motor 403 is installed inside the upper open shell 401. A rod sleeve 404 is threadedly connected to the outer side wall of the lead screw 402. A guide rail 405 is installed on the inner bottom wall of the upper open shell 401. The bottom of the rod sleeve 404 is slidably connected to the guide rail 405 through a slider 406, and its top is connected to the side plate 5 through an L-shaped plate 407.

[0031] After the clamping mechanism 1 clamps and seals the upper and lower sides of the reducer worm gear box, the starting motor 403 drives the lead screw 402 inside the upper open shell 401 to rotate. Because the lead screw 402 is threadedly connected to the sleeve 404, and the bottom of the sleeve 404 is slidably connected to the guide rail 405 on the inner bottom wall of the upper open shell 401 through the slider 406, when the lead screw 402 rotates, it drives the sleeve 404 to move smoothly along the guide rail 405. The top of the sleeve 404 drives the side plate 5 to move linearly toward the worm gear box through the L-shaped plate 407, so that the large plug 6 on the side plate 5 is accurately embedded. The large opening on the side of the worm gear box for the drive shaft to extend is sealed. At the same time, the small plug 9 on the side plate 5 seals all the other gaps on the side of the worm gear box except for the large opening, achieving a precise seal of all gaps. Then, air supply and testing operations can be carried out. After the test is completed, the control motor 403 reverses, driving the lead screw 402 to rotate in the opposite direction, causing the rod sleeve 404 to move away from the worm gear box along the guide rail 405. Through the L-shaped plate 407, the side plate 5, the large plug 6, the air inlet pipe 7, and the airtightness detection device 8 are simultaneously reset and disengaged from the side of the worm gear box.

[0032] Furthermore, a cast iron counterweight base 3 is fixedly connected to the bottom of the support platform 2. The top of the cast iron counterweight base 3 is connected to the electric hydraulic rod 103 through the support plate 10. The cast iron material of the cast iron counterweight base 3 has high density and sufficient weight, which can significantly improve the overall stability of the device's center of gravity. The air inlet pipe 7 is equipped with a one-way valve 10. The one-way valve 10 can realize one-way gas flow and reverse cut-off. When the external gas supply pipe supplies gas to the reducer worm gear box through the air inlet pipe 7, the one-way valve 10 opens smoothly to ensure that the gas is stably supplied to the box. During the detection process or after the gas supply stops, the one-way valve 10 can close quickly to effectively prevent the gas in the worm gear box from flowing back to the air inlet pipe 7 and the external gas supply pipe, thus avoiding the loss of gas pressure in the box and causing deviations in the detection results.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A device for detecting the airtightness of a worm gearbox in a speed reducer, characterized in that: The device includes a clamping mechanism (1) for clamping and sealing the upper and lower surfaces of the reducer worm gear box. A support platform (2) is fixedly mounted at the bottom of the clamping mechanism (1). An electric push mechanism (4) is installed on the side of the support platform (2). The power output end of the electric push mechanism (4) is connected to a side plate (5) and drives the side plate (5) to move linearly toward the reducer worm gear box. A large plug (6) is provided on the side of the side plate (5) facing the reducer worm gear box. The large plug (6) is connected to the reducer worm gear box. The large opening of the gearbox is adapted to the drive shaft and is used to seal the large opening. An air inlet pipe (7) is embedded and fixed inside the large plug (6). One end of the air inlet pipe (7) passes through the side plate (5) in the horizontal direction and is used to connect to the external air supply pipe to input gas into the gearbox. The other end of the air inlet pipe (7) extends into the gearbox along with the large plug (6), and an air tightness detection device (8) is installed on the extended section of the air inlet pipe (7).

2. The airtightness testing device for a worm gearbox of a speed reducer according to claim 1, characterized in that: The clamping mechanism (1) includes a lower clamping plate (101) and an upper clamping plate (102). The upper clamping plate (102) is driven downward by an electric hydraulic rod (103) to cooperate with the lower clamping plate (101) to clamp the worm gear box of the reducer.

3. The airtightness testing device for a worm gearbox of a speed reducer according to claim 2, characterized in that: The upper clamping plate (102) and the lower clamping plate (101) are both provided with grooves (104) that are matched with the worm gear box of the reducer.

4. The airtightness testing device for a worm gearbox of a speed reducer according to claim 2, characterized in that: The lower clamping plate (101), the upper clamping plate (102), and the side plate (5) are all provided with multiple small plugs (9) to seal the holes on the worm gear box of the reducer.

5. The airtightness testing device for a worm gearbox of a speed reducer according to claim 1, characterized in that: The electric drive mechanism (4) includes an upper open shell (401) fixed to the side of the support platform (2), and a lead screw (402) driven by a motor (403) is installed inside the upper open shell (401). A rod sleeve (404) is threadedly connected to the outer side wall of the lead screw (402). A guide rail (405) is installed on the inner bottom wall of the upper open shell (401). The bottom of the rod sleeve (404) is slidably connected to the guide rail (405) by a slider (406), and its top is connected to the side plate (5) by an L-shaped plate (407).

6. The airtightness testing device for a worm gearbox of a speed reducer according to claim 2, characterized in that: The bottom of the support platform (2) is fixedly connected to a cast iron counterweight base (3), and the top of the cast iron counterweight base (3) is connected to an electric hydraulic rod (103) through a support plate (10).

7. The airtightness testing device for a worm gearbox of a speed reducer according to claim 1, characterized in that: The outer wall of the extended section of the intake pipe (7) is provided with a plurality of exhaust holes (701) surrounding the intake pipe (7). The air tightness detection device (8) is installed at the end of the extended section of the intake pipe (7) and includes a pressure sensor and a pressure sensing probe. The pressure sensor and the pressure sensing probe are electrically connected and can detect the pressure change inside the worm gear box of the reducer in real time to determine its air tightness.

8. The airtightness testing device for a worm gearbox of a speed reducer according to claim 1, characterized in that: The intake pipe (7) is equipped with a one-way valve (11).

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