Air tightness detection device of transmission assembly

Abstract

The utility model relates to the technical field of air tightness detection, and provides an air tightness detection device of a transmission assembly. The workbench is arranged on the rack, the lower positioning plate and the upper positioning plate are oppositely arranged on the workbench, and the driving part is used for driving the upper positioning plate to move in the direction of the lower positioning plate where the transmission assembly is placed. The transmission assembly comprises a transmission shaft and a shaft sleeve fixedly arranged outside the transmission shaft in a sleeving mode, a first penetrating hole allowing the transmission shaft to penetrate is formed in the lower positioning plate in a penetrating mode, a lower detection sleeve coaxially arranged on the transmission shaft in a sleeving mode is arranged on the upper surface of the lower positioning plate, and an upper detection sleeve allowing the upper end of the transmission shaft to be inserted is arranged on the lower surface of the upper positioning plate. The surfaces, close to each other, of the upper detection sleeve and the lower detection sleeve are provided with insertion grooves for the two ends of the shaft sleeve to be inserted respectively. The air tightness detection device has the beneficial effects that the air tightness detection is performed on the transmission rotating shaft and the shaft sleeve so as to reduce the influence caused by the subsequent use of the transmission assembly.

Description

Technical Field

[0001] The present application relates to the technical field of airtightness detection, and particularly to an airtightness detection device for a transmission component. Background Art

[0002] A bushing is a mechanical part sleeved on a rotating shaft. The transmission rotating shaft is matched with the bushing, one end is connected to a motor, and the other end is connected to a gearbox. Affected by processing errors or equipment processing progress, etc., gaps are likely to occur at the mating part between the shaft and the bushing, resulting in lubricating oil or external water and other media between the shaft and the bushing entering the inside of the gearbox, which will affect the transmission effect and service life of the gearbox. Therefore, a device capable of detecting the airtightness between the transmission shaft and the bushing is needed to solve this problem. Summary of the Utility Model

[0003] In order to perform airtightness detection on the transmission rotating shaft and the bushing to reduce the influence brought about when using the transmission component subsequently, the present application provides an airtightness detection device for a transmission component.

[0004] An airtightness detection device for a transmission component provided by the present application adopts the following technical solutions:

[0005] An airtightness detection device for a transmission component includes a frame, a workbench arranged on the frame, a lower positioning plate and an upper positioning plate oppositely arranged on the upper layer of the workbench, and a driving member for driving the upper positioning plate to move towards the lower positioning plate on which the transmission component is placed; the transmission component includes a transmission shaft and a bushing fixedly sleeved outside the transmission shaft. The lower positioning plate is penetrated with a first through hole for the transmission shaft to pass through. A lower detection sleeve coaxially sleeved on the transmission shaft is arranged on the upper surface of the lower positioning plate. An upper detection sleeve for inserting the upper end of the transmission shaft is arranged on the lower surface of the upper positioning plate. Slots for respectively inserting both ends of the bushing are opened on the surfaces of the upper detection sleeve and the lower detection sleeve close to each other. Sealing members abutting against the bushing are arranged in the slots of the upper detection sleeve and the lower detection sleeve. An air inlet pipe is fixedly penetrated through the side wall of the upper detection sleeve, and an air outlet pipe is fixedly penetrated through the side wall of the lower detection sleeve. Chambers for gas retention are provided in both the upper detection sleeve and the lower detection sleeve. The air outlet pipe is connected with a gas collection member for collecting gas.

[0006] By adopting the above technical solution, before starting the driving member, the transmission shaft is first passed through the lower positioning plate, so that the shaft sleeve is inserted into the slot opened on the lower detection sleeve located on the lower positioning plate to abut against the sealing member. Then the driving member is started to drive the upper positioning plate to move towards the transmission assembly on the lower positioning plate, so that after the slot on the upper detection sleeve corresponds to the insertion of the shaft sleeve, it abuts against the sealing member, so that the gap between the internal transmission shaft and the shaft sleeve is in a closed state. Then, gas is input into the chamber through the air inlet pipe. If there is a gap between the transmission shaft and the shaft sleeve, at this time, a part of the gas will flow along the gap to the air outlet pipe and then enter the air collecting member to perform airtight detection on the transmission rotating shaft and the shaft sleeve. If the air collecting member receives the corresponding gas, it means that there is a gap between the transmission shaft and the shaft sleeve. If not, it means that the gap between the two is small, which can reduce the influence brought by the subsequent use of the transmission assembly.

[0007] Preferably, the air collecting member includes a communicating pipe connected to the air outlet pipe and a water storage box filled with a liquid medium. The water storage box is transparently arranged, and the communicating pipe extends into the liquid medium.

[0008] By adopting the above technical solution, during detection, the gas enters the liquid medium in the water storage box from the air outlet pipe and the hose. If there is a gap between the transmission shaft and the shaft sleeve, when the gas is transmitted to the water storage box, bubbles will be generated; on the contrary, after ventilation, if there is no reaction in the water storage box, it means that the sealing performance between the transmission shaft and the shaft sleeve is good, so as to judge the airtightness between the transmission shaft and the shaft sleeve.

[0009] Preferably, the sealing member is a sealing ring, and the sealing ring is fixedly connected to the inner peripheral walls of the upper detection sleeve and the lower detection sleeve located at the slot.

[0010] By adopting the above technical solution, through the sealing ring, sealing treatment is carried out when the two ends of the shaft sleeve are respectively inserted into the slots of the upper detection sleeve and the lower detection sleeve.

[0011] Preferably, the sealing rings respectively arranged in the two slots respectively abut against the upper end face and the lower end face of the shaft sleeve.

[0012] By adopting the above technical solution, compared with abutting against the outer peripheral wall of the shaft sleeve, it can reduce the influence on the subsequent sealing of the sealing ring after multiple insertions and extractions.

[0013] Preferably, a limiting ring is integrally formed on the outer peripheral wall of the transmission shaft, the lower end of the shaft sleeve abuts against the limiting ring, the diameter of the limiting ring is smaller than the diameter of the shaft sleeve, the chamber arranged on the lower detection sleeve is located below the slot, and a sealing member abutting against the lower end face of the limiting ring is arranged on the inner bottom wall of the chamber of the lower detection sleeve. At this time, the sealing member is arranged below the air outlet pipe.

[0014] By adopting the above technical solution, a limit ring is provided to limit the fixed position of the bushing. Correspondingly, the provided chamber is located below the slot, and a seal is provided for sealing treatment.

[0015] Preferably, the frame includes a plurality of first support rods disposed on the workbench and a fixing plate disposed on the first support rods. The driving member is a cylinder fixedly connected to the fixing plate. The piston rod of the cylinder slidably penetrates through the fixing plate and is fixedly connected to the upper positioning plate. A guiding rod protrudes from the workbench, and a second through hole for the guiding rod to slidably penetrate is formed through the upper positioning plate.

[0016] By adopting the above technical solution, the cylinder is started to drive the upper positioning device to lift along the length direction of the guiding rod, thereby driving the sliding of the upper positioning plate to fix the bushing with the plate.

[0017] Preferably, a contact ring is wound around the upper surface of the lower positioning plate, and the contact ring is coaxially sleeved on the lower detection sleeve.

[0018] By adopting the above technical solution, by providing a contact ring, the lower detection sleeve is limited and a certain support is provided.

[0019] Preferably, a sliding plate is disposed on the workbench, a sliding rail is disposed on the sliding plate, a plurality of second support rods are fixedly connected to the lower surface of the lower positioning plate, and a sliding seat slidably connected to the sliding rail is fixedly connected to the lower end surface of the second support rod. The lower end of the transmission shaft abuts against the upper surface of the sliding seat.

[0020] By adopting the above technical solution, by providing second support rods on the lower positioning plate and a sliding seat slidably connected to the sliding rail, the lower positioning plate can be slid to be misaligned with the upper positioning plate, so that after the operator strengthens the transmission shaft to penetrate through the lower positioning plate, it can be slid to be abutted against the upper positioning plate. Moreover, when the distance between the upper positioning plate and the lower positioning plate is too large, the driving path of the provided driving member is relatively long, that is, the time spent on airtightness detection is increased, affecting the corresponding detection efficiency.

[0021] Preferably, the sliding plate is provided with a limiting member for limiting the sliding of the sliding seat.

[0022] By adopting the above technical solution, by providing a limiting member for limiting the sliding of the sliding seat, the possibility of relative sliding can be reduced when the driving member is started to drive the upper positioning plate and the lower positioning plate to be relatively arranged, that is, when the upper detection sleeve is sleeved on the upper end of the bushing, thereby reducing the influence on airtightness detection.

[0023] Preferably, the limiting member includes a limiting block abutted against the sliding seat, a limiting bolt passing through the limiting block and threadedly connected to the sliding seat, and a limiting rod rotatably passing through the limiting block, and the limiting rod is fixedly connected to the sliding seat.

[0024] By adopting the above technical solution, the limiting rod is used to limit the rotation of the limiting block. After loosening the limiting bolt, the sliding seat can slide along the sliding plate. When it slides to the desired position, rotate the limiting plate at this time to drive the limiting plate to abut against the sliding seat, and then rotate the limiting bolt to make the limiting plate abut tightly against the sliding seat, so as to realize the sliding restriction of the sliding seat.

[0025] To sum up, the utility model has the following beneficial effects:

[0026] Before starting the driving member, first pass the transmission shaft through the lower positioning plate, so that the shaft sleeve is inserted into the slot opened on the lower detection sleeve located on the lower positioning plate to abut against the sealing member. Then start the driving member to drive the upper positioning plate to move towards the direction of the transmission component on the lower positioning plate, so as to drive the slot on the upper detection sleeve to be correspondingly inserted with the shaft sleeve and then abut against the sealing member, so that the gap between the internal transmission shaft and the shaft sleeve is in a closed state. Then, input gas into the chamber through the air inlet pipe. If there is a gap between the transmission shaft and the shaft sleeve, at this time, a part of the gas will flow along the gap to the air outlet pipe and then enter the air collecting member to perform airtight detection on the transmission rotating shaft and the shaft sleeve. If the air collecting member receives the corresponding gas, it means that there is a gap between the transmission shaft and the shaft sleeve. If not, it means that the gap between the two is small, which can reduce the influence brought by subsequent use of the transmission component. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0028] Figure 2 is the structural schematic diagram of the transmission component in the embodiment of the present application;

[0029] Figure 3 is Figure 1 the partial enlarged schematic diagram of part A in

[0030] Figure 4 is the structural schematic diagram of the limiting member in the embodiment of the present application.

[0031] Description of reference numerals: 1, transmission assembly; 11, transmission shaft; 12, bushing; 13, limiting ring; 2, frame; 21, first support rod; 22, fixing plate; 3, workbench; 31, sliding plate; 32, slide rail; 33, guide rod; 4, lower positioning plate; 41, second support rod; 42, sliding seat; 43, first through hole; 44, lower detection sleeve; 45, abutting ring; 46, air outlet pipe; 5, upper positioning plate; 51, upper detection sleeve; 52, air inlet pipe; 53, second through hole; 6, driving member; 7, limiting member; 71, limiting block; 72, limiting bolt; 73, limiting rod; 8, slot; 81, chamber; 9, air collecting member; 91, connecting pipe; 92, water storage box; 10, sealing member. Detailed implementation manners

[0032] The following Figures 1-4 is combined with the attached drawings to further elaborate on this application.

[0033] An airtightness detection device for a transmission assembly is disclosed in an embodiment of this application.

[0034] Embodiment:

[0035] An airtightness detection device for a transmission assembly, referring to Figure 1 , includes a frame 2, a workbench 3 arranged on the frame 2, a lower positioning plate 4 and an upper positioning plate 5 arranged oppositely on the workbench 3, and a driving member 6 for driving the upper positioning plate 5 to move towards the lower positioning plate 4 on which the transmission assembly 1 is placed.

[0036] Referring to Figure 2 , it should be noted that in this embodiment, the transmission assembly 1 specifically includes a transmission shaft 11 and a bushing 12 fixedly sleeved outside the transmission shaft 11. Among them, a limiting ring 13 is integrally formed on the outer peripheral wall of the transmission shaft 11, and the lower end of the bushing 12 abuts against the limiting ring 13. In this embodiment, the diameter of the limiting ring 13 is smaller than that of the bushing 12, and a sealing glue is applied to the inner peripheral wall of the bushing 12 and wound around the axis of the transmission shaft 11. After solidification, the bushing 12 is fixedly connected to the transmission shaft 11.

[0037] Referring to Figure 1 , Figure 3 , among which, the frame 2 includes a plurality of first support rods 21 fixedly connected to the workbench 3 and a fixing plate 22 fixedly connected to the upper end surface of the first support rods 21. In this embodiment, four first support rods 21 are provided and are respectively arranged at the four top corners of the workbench 3.

[0038] Among them, a plurality of second support rods 41 are fixedly connected to the lower surface of the lower positioning plate 4. At least two second support rods 41 are provided. In this embodiment, specifically four second support rods 41 are provided, and the four second support rods 41 are arranged at the four top corners of the lower positioning plate 4. Among them, a sliding plate 31 is provided on the workbench 3, a sliding rail 32 is provided on the sliding plate 31, and the lower end surface of the second support rod 41 is fixedly connected with a sliding seat 42 that is slidably connected to the sliding rail 32. Among them, the lower end of the transmission shaft 11 abuts against the upper surface of the sliding seat 42.

[0039] Referring to Figure 1 , Figure 4 , a limiting member 7 for restricting the sliding of the sliding seat 42 is provided on the sliding plate 31. In this embodiment, the limiting member 7 specifically includes a limiting block 71 that abuts against the sliding seat 42, a limiting bolt 72 that passes through the limiting block 71 and is threadedly connected to the sliding seat 42, and a limiting rod 73 that rotatably passes through the limiting block 71. The limiting rod 73 is fixedly connected to the sliding seat 42.

[0040] Returning to Figure 1 , Figure 3 , a first through hole 43 for the transmission shaft 11 to pass through is formed through the upper surface of the lower positioning plate 4. The diameter of the first through hole 43 is larger than the diameter of the transmission shaft 11. A lower detection sleeve 44 coaxially sleeved on the transmission shaft 11 is provided on the upper surface of the lower positioning plate 4. An abutting ring 45 is wound around the upper surface of the lower positioning plate 4, and the abutting ring 45 is coaxially sleeved on the lower detection sleeve 44. An upper detection sleeve 51 for the upper end of the transmission shaft 11 to be inserted into is provided on the lower surface of the upper positioning plate 5. Slots 8 for the two ends of the shaft sleeve 12 to be respectively inserted into are formed on the surfaces of the upper detection sleeve 51 and the lower detection sleeve 44 that are close to each other. Chambers 81 for gas retention are provided in both the upper detection sleeve 51 and the lower detection sleeve 44. The diameter of the chamber 81 is larger than the diameter of the slot 8. The chamber 81 provided in the upper detection sleeve 51 is located above the slot 8, and the chamber 81 provided in the lower detection sleeve 44 is located below the slot 8.

[0041] Among them, an air inlet pipe 52 communicating with the chamber 81 is fixedly penetrated through the side wall of the upper detection sleeve 51, an air outlet pipe 46 communicating with the chamber 81 is fixedly penetrated through the side wall of the lower detection sleeve 44, and the air outlet pipe 46 is connected with a gas collection member 9 for collecting gas. In this embodiment, the gas collection member 9 specifically includes a communication pipe 91 connected to the air outlet pipe 46 and a water storage box 92 filled with a liquid medium. The water storage box 92 is transparently arranged. The communication pipe 91 extends into the liquid medium. The water storage box 92 can be arranged outside the frame 2 or outside the workbench 3, specifically set according to requirements. In this embodiment, it is specifically arranged on the upper surface of the workbench 3.

[0042] Among them, the upper detection sleeve 51 and the lower detection sleeve 44 are respectively fixedly connected with a seal 10 abutting against the bushing 12 in the slot 8, and the lower detection sleeve 44 is fixedly connected with a seal 10 abutting against the lower end face of the limiting ring 13 on the inner bottom wall of the chamber 81. At this time, the seal 10 is arranged below the air outlet pipe 46. In this embodiment, the seal 10 is an O-ring, specifically an O-shaped seal ring, and the O-ring seals arranged in the two slots 8 respectively abut against the upper end face and the lower end face of the bushing 12.

[0043] Among them, the driving member 6 is a cylinder fixedly connected to the fixing plate 22. The piston rod of the cylinder slides through the fixing plate 22 and is fixedly connected to the upper positioning plate 5. Two guide rods 33 are fixedly connected to the upper surface of the sliding plate 31. A second through hole 53 is formed through the upper surface of the upper positioning plate 5 for the guide rods 33 to slide through, so as to position the upper positioning plate 5.

[0044] The implementation principle of the airtightness detection device for a transmission assembly in an embodiment of the present application is as follows: Before starting the driving member 6, after sliding the lower positioning plate 4 to be misaligned with the upper positioning plate 5, the lower end of the transmission shaft 11 is passed through the lower detection sleeve 44 and the first through hole 43, and then abuts against the upper surface of the sliding seat 42. After that, the lower positioning plate 4 is pushed to slide to be opposite to the upper positioning plate 5. Then, the limiting plate is rotated to drive the limiting plate to abut against the sliding seat 42, and then the limiting bolt 72 is rotated so that the limiting plate abuts tightly against the sliding seat 42 to realize the sliding restriction of the sliding seat 42.

[0045] Then start the driving member 6 to drive the upper positioning plate 5 to move towards the transmission assembly 1 on the lower positioning plate 4, so as to drive the slot 8 on the upper detection sleeve 51 to be inserted corresponding to the bushing 12, and then abut against the seal 10, so that the gap between the internal transmission shaft 11 and the bushing 12 is in a closed state. Then, gas is input into the chamber 81 through the air inlet pipe 52. If there is a gap between the transmission shaft 11 and the bushing 12, at this time, a part of the gas will flow along the gap to the air outlet pipe 46 and then enter the air collecting member 9 to perform airtightness detection on the transmission rotating shaft and the bushing 12. If the air collecting member 9 receives the corresponding gas, it means that there is a gap between the transmission shaft 11 and the bushing 12. If not, it means that the gap between the two is small, which can reduce the influence brought by subsequent use of the transmission assembly 1.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An airtightness detection device for a transmission component, characterized in that: It includes a frame (2), a workbench (3) arranged on the frame (2), a lower positioning plate (4) and an upper positioning plate (5) which are oppositely arranged on the workbench (3), and a driving member (6) for driving the upper positioning plate (5) to move towards the lower positioning plate (4) where the transmission assembly (1) is placed; the transmission assembly (1) includes a transmission shaft (11) and a bushing (12) fixedly sleeved outside the transmission shaft (11), the lower positioning plate (4) is provided with a first through hole (43) for the transmission shaft (11) to pass through, a lower detection sleeve (44) coaxially sleeved with the bushing (12) is arranged on the upper surface of the lower positioning plate (4), an upper detection sleeve (51) for the upper end of the transmission shaft (11) to be inserted is arranged on the lower surface of the upper positioning plate (5), slots (8) for the two ends of the bushing (12) to be respectively inserted are arranged on the surfaces of the upper detection sleeve (51) and the lower detection sleeve (44) close to each other, a sealing member (10) abutting against the bushing (12) is arranged in the slots (8) of the upper detection sleeve (51) and the lower detection sleeve (44), an air inlet pipe (52) is fixedly penetrated through the side wall of the upper detection sleeve (51), an air outlet pipe (46) is fixedly penetrated through the side wall of the lower detection sleeve (44), chambers (81) for gas retention are provided in both the upper detection sleeve (51) and the lower detection sleeve (44), and the air outlet pipe (46) is connected with a gas collection member (9) for collecting gas.

2. The airtightness detection device for a transmission component according to claim 1, wherein: The gas collection member (9) includes a communication pipe (91) connected to the air outlet pipe (46) and a water storage box (92) filled with a liquid medium, the water storage box (92) is transparently arranged, and the communication pipe (91) extends into the liquid medium.

3. The airtightness detection device for a transmission component according to claim 1, characterized in that: The sealing member (10) is an O-ring, and the O-ring is fixedly connected to the inner peripheral walls of the upper detection sleeve (51) and the lower detection sleeve (44) located in the slots (8).

4. An airtightness detection device for a transmission component according to claim 3, characterized in that: The O-rings respectively arranged in the two slots (8) respectively abut against the upper end face and the lower end face of the bushing (12).

5. The airtightness detection device for a transmission component according to claim 1, characterized in that: A limiting ring (13) is integrally formed on the outer peripheral wall of the transmission shaft (11), the lower end of the bushing (12) abuts against the limiting ring (13), the diameter of the limiting ring (13) is smaller than that of the bushing (12), the chamber (81) arranged in the lower detection sleeve (44) is located below the slot (8), and a sealing member (10) abutting against the lower end face of the limiting ring (13) is arranged on the inner bottom wall of the lower detection sleeve (44) where the chamber (81) is located. At this time, the sealing member (10) is arranged below the air outlet pipe (46).

6. The airtightness detection device for a transmission component according to claim 1, characterized in that: The frame (2) includes a plurality of first support rods (21) disposed on the workbench (3) and a fixing plate (22) disposed on the first support rods (21). The driving member (6) is a cylinder fixedly connected to the fixing plate (22). The piston rod of the cylinder slidably penetrates through the fixing plate (22) and is fixedly connected to the upper positioning plate (5). A guide rod (33) protrudes from the workbench (3). The upper positioning plate (5) is provided with a second through hole (53) for the guide rod (33) to slidably penetrate through.

7. An airtightness detection device for a transmission component according to claim 1, characterized in that: An abutting ring (45) is wound around the upper surface of the lower positioning plate (4). The abutting ring (45) is coaxially sleeved on the lower detection sleeve (44).

8. An airtightness detection device for a transmission component according to claim 1, characterized in that: A sliding plate (31) is disposed on the workbench (3). A slide rail (32) is disposed on the sliding plate (31). A plurality of second support rods (41) are fixedly connected to the lower surface of the lower positioning plate (4). The lower end surfaces of the second support rods (41) are fixedly connected with sliding seats (42) slidably connected to the slide rail (32). The lower end of the transmission shaft (11) abuts against the upper surface of the sliding seat (42).

9. The airtightness detection device for a transmission component according to claim 8, characterized in that: The sliding plate (31) is provided with a limiting member (7) for limiting the sliding of the sliding seat (42).

10. The airtightness detection device for a transmission component according to claim 9, characterized in that: The limiting member (7) includes a limiting block (71) abutting against the sliding seat (42), a limiting bolt (72) passing through the limiting block (71) and threadedly connected to the sliding seat (42), and a limiting rod (73) rotatably passing through the limiting block (71). The limiting rod (73) is fixedly connected to the sliding seat (42).

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