Automobile transfer case shell air tightness detection system
By designing an airtightness testing system for automotive transfer case housings, the problem of insufficient sealing performance of transfer case housings was solved, and automated testing and sorting were achieved, improving the factory pass rate and equipment automation rate.
Patent Information
- Application Number
- CN202520551396.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-26
AI Technical Summary
In existing technologies, the sealing performance of the transfer case aluminum alloy housing is insufficient, leading to leakage problems, affecting service life and causing environmental pollution. There is a lack of efficient and automated testing equipment.
An airtightness testing system for automotive transfer case housings was designed, comprising a conveying mechanism, a testing mechanism, an adjusting mechanism, and a gripping mechanism, to achieve automated conveying, testing, and sorting, and to determine the leakage amount through direct pressure and differential pressure airtightness testing methods.
It improved the factory pass rate of transfer case housings, realized automated inspection and sorting, reduced manual intervention, and increased the automation rate of the equipment.
Smart Images
Figure CN223910449U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transfer case shell detection technical field, concretely is a kind of automobile transfer case shell air tightness detection system. BACKGROUND
[0002] Automobile transfer case is a key component in four-wheel drive system, its main role is to distribute the power of engine to front and rear axles. This is crucial to improve the passability of vehicle in complex road conditions. Transfer case can reasonably distribute the power of engine to front and rear axles, thereby improving the traction and maneuverability of vehicle.
[0003] As a transmission mechanism and operating mechanism that changes the running speed of automobile, transfer case plays an extremely important role in automobile. The sealing performance of transfer case aluminum alloy shell is insufficient, which not only affects the service life of transfer case, but also causes environmental pollution and other problems. In order to prevent leakage caused by insufficient sealing, a new type of detection equipment with high cost-effectiveness and high automation is needed to detect and analyze the leakage of transfer case aluminum alloy shell. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of automobile transfer case shell air tightness detection system to solve the problems raised in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of automobile transfer case shell air tightness detection system, including conveying frame, further including:
[0006] Conveying mechanism for conveying transfer case shell is arranged in the conveying frame;
[0007] Supporting table is arranged in one side of conveying frame, the top of supporting table is provided with adjusting mechanism for taking and placing transfer case shell, the outside of adjusting mechanism is provided with grabbing mechanism;
[0008] Detection table is arranged in one side of supporting table, the top of detection table is provided with detection mechanism for carrying out air tightness test to transfer case shell;
[0009] Storage area for placing unqualified products is arranged in one side of detection table, the bottom of detection table of conveying frame is fixed with several supporting legs.
[0010] Preferably, the conveying mechanism includes a first motor fixed to one side of the conveying frame, the output end of the first motor is fixed with a first rotating rod, the outer side of the first rotating rod is fixed with a driving sprocket, the outer side of the driving sprocket is engaged with a chain, and the outer side of the chain is fixed with a conveying belt.
[0011] Preferably, the inner sides of the chain are respectively connected with a driven sprocket and a plurality of supporting sprockets, the shaft centers of the driven sprocket and the supporting sprockets are fixed with second rotating rods, and the first rotating rod and the second rotating rod are rotationally connected to the inner wall of the conveying frame.
[0012] Preferably, the adjusting mechanism comprises a base fixed to the top of the supporting table, the inner wall of the base is fixed with a second motor, the output end of the second motor is fixed with a first arm, the upper portion of the first arm is provided with a second arm, the inner wall of the second arm is fixed with a third motor, the output end of the third motor is fixed with a limiting seat, and the limiting seat is fixed to the inner wall of the first arm.
[0013] Preferably, the grabbing mechanism comprises a cavity formed in the second arm, the inner wall of the second arm is fixed with a fourth motor, the output end of the fourth motor is fixed with a rotating shaft, the outer side of the rotating shaft is fixed with a first synchronous pulley, the outer side of the first synchronous pulley is connected with a synchronous belt, the inner side of the synchronous belt is connected with a second synchronous pulley, and the inner wall of the second synchronous pulley is threadedly connected with a screw rod.
[0014] Preferably, the two ends of the screw rod are fixed with limiting blocks, the outer side of the screw rod is slidably connected with a top disc, the top disc and the second arm are fixed with an extension rod, the outer side of the screw rod is threadedly connected with a nut, the outer side of the top disc is rotationally connected with four finger joints, the inner wall of the finger joint is rotationally connected with a connecting rod, and the connecting rod is rotationally connected to the inner wall of the nut.
[0015] Preferably, the detecting mechanism comprises a mounting frame fixed to the top of the detecting table, the inner wall of the mounting frame is mounted with a blocking cylinder, the top of the detecting table is respectively fixed with a second detecting station and a mounting plate, the top of the mounting plate is fixed with an electric sliding rail, and the outer side of the electric sliding rail is slidably connected with a first detecting station.
[0016] Compared with the prior art, the automobile transfer case shell air tightness detection system has the following beneficial effects:
[0017] The automobile transfer case shell air tightness detection system can automatically convey the transfer case shell to be detected, can realize the detection of the air tightness of the transfer case aluminum alloy shell, can realize automatic detection and can obtain the leakage amount of the detection, can improve the qualified rate of the transfer case shell, and can realize automatic feeding and sorting after detection by cooperation of the adjusting mechanism and the grabbing mechanism, and can improve the equipment automation rate. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 A structure diagram of a preferred embodiment of the automobile transfer case shell air tightness detection system is provided.
[0019] Figure 2The structure schematic view of the conveying mechanism is provided in the utility model.
[0020] Figure 3 The structure schematic view of the adjusting mechanism is provided in the utility model.
[0021] Figure 4 The structure schematic view of the grabbing mechanism is provided in the utility model.
[0022] Figure 5 The structure schematic view of the detecting mechanism is provided in the utility model.
[0023] Figure 6 The direct pressure type air tightness detection loop diagram is provided in the utility model.
[0024] Figure 7 The differential pressure type air tightness detection loop diagram is provided in the utility model.
[0025] Figure 8 The pneumatic loop diagram of the pressing cylinder is provided in the utility model.
[0026] Figure 9 The pneumatic loop diagram of the feeding cylinder and the joint cylinder is provided in the utility model.
[0027] In the figure: 1, conveying frame; 2, conveying mechanism; 21, first motor; 22, first rotating rod; 23, driving sprocket; 24, chain; 25, conveying belt; 26, driven sprocket; 27, supporting sprocket; 28, second rotating rod; 3, supporting table; 4, adjusting mechanism; 41, base; 42, second motor; 43, No. 1 arm; 44, No. 2 arm; 45, third motor; 46, limiting seat; 5, grabbing mechanism; 51, cavity; 52, fourth motor; 53, rotating shaft; 54, first synchronous pulley; 55, synchronous belt; 56, second synchronous pulley; 57, screw rod; 58, limiting block; 59, top disc; 510, telescopic rod; 511, nut; 512, knuckle joint; 513, connecting rod; 6, detection table; 7, detecting mechanism; 71, mounting frame; 72, plugging cylinder; 73, No. 2 detection station; 74, mounting plate; 75, electric sliding rail; 76, No. 1 detection station; 8, storage area; 9, supporting leg. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0029] Please refer toFigures 1-9 As shown in the figure, a kind of automotive transfer case shell air tightness detection system, including conveying frame 1, further include the conveying mechanism 2 for conveying transfer case shell being arranged in conveying frame 1 interior, conveying mechanism 2 includes the first motor 21 being fixed to the one side of conveying frame 1, the output end of first motor 21 is fixed with first rotary lever 22, the outside of first rotary lever 22 is fixed with driving sprocket 23, the outside of driving sprocket 23 is engagedly connected with chain 24, the outside of chain 24 is fixed with conveying belt 25;The inside of chain 24 is engagedly connected with driven sprocket 26 and several support sprocket 27 respectively, the axis of driven sprocket 26 and support sprocket 27 is all fixed with second rotary lever 28, first rotary lever 22 and second rotary lever 28 are all rotationally connected to the inner wall of conveying frame 1, by setting conveying frame 1 can install conveying mechanism 2, by setting conveying mechanism 2 can be conveyed to the automotive transfer case shell to be detected, by setting first motor 21 can drive first rotary lever 22 to rotate, by first rotary lever 22 rotation can drive driving sprocket 23 fixed on its outside to rotate, the both ends of driving sprocket 23 rotation are all engagedly connected with chain 24, when driving sprocket 23 rotates, can drive two chains 24 synchronous rotation, conveying belt 25 is fixed between two chains 24, chain 24 when rotating drives conveying belt 25 synchronous rotation, the automotive transfer case shell to be detected is conveyed, by setting driven sprocket 26 and several support sprocket 27 inside the rotation of chain 24, chain 24 can be supported when rotating, improve the stability of chain 24 when rotating conveying goods, by setting first rotary lever 22 and second rotary lever 28 in the rotation of conveying frame 1, can improve the stability of driving sprocket 23, driven sprocket 26 and several support sprocket 27 rotation.
[0030] Supporting table 3 is arranged at one side of conveying frame 1, the top of supporting table 3 is provided with adjusting mechanism 4 for taking and placing transfer case shell;Adjusting mechanism 4 includes base 41 fixed to the top of supporting table 3, the inner wall of base 41 is fixed with second motor 42, the output end of second motor 42 is fixed with No. 1 arm 43, No. 1 arm 43 is provided with No. 2 arm 44 above, the inner wall of No. 2 arm 44 is fixed with third motor 45, the output end of third motor 45 is fixed with limit seat 46, limit seat 46 is fixed to the inner wall of No. 1 arm 43, by setting supporting table 3 can support installing adjusting mechanism 4, by setting adjusting mechanism 4 rotates the following grabbing mechanism 5, by setting base 41 can install second motor 42, by setting second motor 42 can drive No. 1 arm 43 to rotate, by setting No. 2 arm 44 can install third motor 45, since the output end of third motor 45 is fixed with limit seat 46, and limit seat 46 is fixed in No. 1 arm 43, when the output end of third motor 45 drives limit seat 46 to rotate, and limit seat 46 is fixed in No. 1 arm 43, make No. 2 arm 44 of installing third motor 45 rotate.
[0031] The outer side of the adjusting mechanism 4 is provided with a grabbing mechanism 5, the grabbing mechanism 5 comprises a cavity 51 opened in the inside of the second arm 44, the inner wall of the second arm 44 is fixedly connected with a fourth motor 52, the output end of the fourth motor 52 is fixedly connected with a rotating shaft 53, the outer side of the rotating shaft 53 is fixedly connected with a first synchronous pulley 54, the outer side of the first synchronous pulley 54 is meshedly connected with a synchronous belt 55, the inner side of the synchronous belt 55 is meshedly connected with a second synchronous pulley 56, the inner wall of the second synchronous pulley 56 is threadedly connected with a screw rod 57; the both ends of the screw rod 57 are fixedly connected with a limiting block 58, the outer side of the screw rod 57 is slidably connected with a top disc 59, the top disc 59 and the second arm 44 are fixedly connected with an extension rod 510, the outer side of the screw rod 57 is threadedly connected with a nut 511, the outer side of the top disc 59 is rotatably connected with four finger joints 512, the inner wall of the finger joint 512 is rotatably connected with a connecting rod 513, the connecting rod 513 is rotatably connected to the inner wall of the nut 511, the driving box shell on the conveying belt 25 can be grabbed by the grabbing mechanism 5, the driving box shell is moved to the detection table 6 by the adjusting mechanism 4, small parts can be installed by the cavity 51, the rotating shaft 53 can be driven to rotate by the fourth motor 52, the first synchronous pulley 54 fixedly connected to the outer side of the rotating shaft 53 can be driven to rotate, the synchronous belt 55 meshedly connected to the outer side of the first synchronous pulley 54 can be driven to rotate, the second synchronous pulley 56 meshedly connected to the inner side of the synchronous belt 55 can be driven to rotate, the screw rod 57 threadedly connected to the inner wall of the second synchronous pulley 56 can be driven to rotate, and the screw rod 57 moves up and down while rotating, thereby the screw rod 57 moves up and down in the second arm 44, the movement distance of the screw rod 57 can be limited by the limiting block 58, the four finger joints 512 can be supported to rotate by the top disc 59, the four finger joints 512 are arranged in a ring array, the connecting rod 513 can be supported to rotate by the nut 511, and the connecting rod 513 also rotates in the finger joint 512, since the nut 511 is threadedly connected to the outer side of the screw rod 57, when the screw rod 57 rotates, the nut 511 can move up and down, thereby driving the connecting rod 513 to rotate, the connecting rod 513 rotating drives the finger joint 512 to rotate, and the driving box shell can be grabbed, the top disc 59 can be limited by the extension rod 510, wherein the extension rod 510 is slidably connected in the sliding sleeve, when the sliding rod moves up to the limit in the sliding sleeve, it is the limit position of the upward movement of the screw rod 57, the sliding rod will not slip out of the sliding sleeve, avoiding the top disc 59 rotating with the screw rod 57, and facilitating the top disc 59 sliding off the screw rod 57.
[0032] The detection mechanism 7 comprises a mounting frame 71 fixed on the top of the detection table 6, a sealing cylinder 72 is mounted on the inner wall of the mounting frame 71, the top of the detection table 6 is respectively fixed with a second detection station 73 and a mounting plate 74, the top of the mounting plate 74 is fixed with an electric sliding rail 75, and the outer side of the electric sliding rail 75 is slidably connected with a first detection station 76. The mounting frame 71 can be arranged on the detection mechanism 7, the detection mechanism 7 can be arranged to detect the air tightness of the transfer case shell, the second detection station 73 can be arranged to facilitate workers to manually put the measured transfer case shell, the electric sliding rail 75 can be arranged to send the measured shell into the first detection station 76 for detection, the working principle of the electric sliding rail 75 is known in the prior art and will not be repeated here, and the first detection station 76 can be arranged to facilitate the measured transfer case shell; the measured shell adopts direct pressure air tightness detection to ensure the calibration accuracy; the detection of the measured shell is taken as a reference standard, differential pressure air tightness detection is adopted, the differential pressure sensor is used to measure the pressure difference to judge the leakage rate of the measured shell, and the leakage rate is used to judge whether the measured shell meets the requirements; the first detection station 76 detects one measured shell as a detection standard, the measured shell is placed on the second detection station 73, and the measured shell on the first detection station 76 is used as a standard for comparison detection; the sealing cylinder 72 can detect the air tightness of the transfer case shell through an air tightness system, the pneumatic system mainly comprises a detection loop and an action loop, the detection loop comprises a direct pressure air tightness detection loop and a differential pressure air tightness detection loop, the action loop comprises a pressing cylinder action loop, a sealing cylinder action loop, a loosening and tightening cylinder action loop and a feeding cylinder action loop, the detection loop comprises a direct pressure air tightness detection loop for detecting the leakage of the measured shell; and the differential pressure air tightness detection loop is used to detect the leakage of the measured shell. The following Figure 6 and Figure 7 The letters in the following formula respectively represent: Q - inflator; F1 - air dryer; F2, F3 - filter; RG1 - pressure regulating valve; P - pressure gauge; T - temperature gauge; SV1, SV2, SV3 - electromagnetic reversing valve; BV1, BV2 - air regulating valve; TD1, TD2 - differential pressure sensor, pressure sensor; MASTER - standard shell; WORK - measured shell; Flow Master - exhaust valve. Action loop design: the movement of the mechanical device, considering the cost factor, compressed air is selected as the power source in the form of air pressure transmission. The action loop comprises: a pressing cylinder action loop, as shown in Figure 8 , which controls the reciprocating movement of the pressing cylinder to realize the installation of the shell. The action loop of the conveying cylinder, as shown in Figure 9 Q1, controls the reciprocating movement of the conveying cylinder to realize the reciprocating movement of the moving plate; the pneumatic loop of the sealing joint tensioning cylinder, as shown in Figure 9 Q2; and the pneumatic loop of the sealing joint feeding cylinder, as shown in Figure 9Q1 and Q2 jointly act as shown in Q3, and isolate the inside space of the shell from the outside environment.
[0033] The storage area 8 is arranged on one side of the detection table 6 for placing unqualified products, and the bottom of the detection table 6 of the conveying frame 1 is fixed with a plurality of supporting legs 9, so that the unqualified products detected can be stored through the arrangement of the storage area 8, and the conveying frame 1 and the detection table 6 can be supported and fixed through the arrangement of the supporting legs 9.
[0034] Working principle: the worker manually puts the measured shell into the second detection station 73, adopts direct pressure air tightness detection for the measured shell, ensures calibration accuracy, and after meeting the requirements, uses the cooperation of the adjusting mechanism 4 and the grabbing mechanism 5 to take and place the to-be-measured shell from the conveying belt 25 to the electric sliding rail 75, uses the electric sliding rail 75 to send the to-be-measured shell into the first detection station 76 for detection, uses the to-be-measured shell as a reference standard, adopts differential pressure air tightness detection, uses a differential pressure sensor to measure a pressure difference value to judge the leakage rate of the to-be-measured shell, uses the leakage rate to judge whether the to-be-measured shell meets the requirements, after the detection is completed, the electric sliding rail 75 sends out the to-be-measured shell, and then uses the cooperation of the adjusting mechanism 4 and the grabbing mechanism 5 to take out and sort the to-be-measured shell, the qualified products are put into the conveying belt 25 and transmitted to the next process, and flow into the laser coding, saving, recording, uploading and packaging links, and the unqualified products are put into the storage area 8 for leakage point detection, and further research on the leakage reason.
[0035] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0036] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A system for detecting the air tightness of an automobile transfer case housing, comprising a conveying frame (1), characterized in that, Also include: The conveying mechanism (2) is arranged in the conveying frame (1) for conveying the transfer case shell; The support table (3) is arranged on one side of the conveying frame (1), and the top of the support table (3) is provided with an adjusting mechanism (4) for taking and placing the transfer case shell, and the outer side of the adjusting mechanism (4) is provided with a grabbing mechanism (5); The detection table (6) is arranged on one side of the support table (3), and the top of the detection table (6) is provided with a detection mechanism (7) for air tightness test of the transfer case shell; The storage area (8) for placing unqualified products is arranged on one side of the detection table (6), and the bottom of the detection table (6) of the conveying frame (1) is fixed with a plurality of supporting legs (9).
2. The system for detecting air tightness of an automobile transfer case housing according to claim 1, characterized in that: The conveying mechanism (2) includes a first motor (21) fixed on one side of the conveying frame (1), and the output end of the first motor (21) is fixed with a first rotating rod (22), and the outer side of the first rotating rod (22) is fixed with a driving sprocket (23), and the outer side of the driving sprocket (23) is engaged with a chain (24), and the outer side of the chain (24) is fixed with a conveying belt (25).
3. The automotive transfer case housing air tightness detection system of claim 2, wherein: The inner side of the chain (24) is respectively engaged with a driven sprocket (26) and a plurality of supporting sprockets (27), the shaft centers of the driven sprocket (26) and the supporting sprocket (27) are fixed with a second rotating rod (28), and the first rotating rod (22) and the second rotating rod (28) are both rotatably connected to the inner wall of the conveying frame (1).
4. The automotive transfer case housing air tightness detection system of claim 1, wherein: The adjusting mechanism (4) includes a base (41) fixed on the top of the support table (3), the inner wall of the base (41) is fixed with a second motor (42), the output end of the second motor (42) is fixed with a first arm (43), the upper side of the first arm (43) is provided with a second arm (44), the inner wall of the second arm (44) is fixed with a third motor (45), the output end of the third motor (45) is fixed with a limiting seat (46), and the limiting seat (46) is fixed to the inner wall of the first arm (43).
5. The automotive transfer case housing air tightness detection system of claim 4, wherein: The grabbing mechanism (5) includes a cavity (51) opened in the second arm (44), the inner wall of the second arm (44) is fixed with a fourth motor (52), the output end of the fourth motor (52) is fixed with a rotating shaft (53), the outer side of the rotating shaft (53) is fixed with a first synchronous pulley (54), the outer side of the first synchronous pulley (54) is engaged with a synchronous belt (55), the inner side of the synchronous belt (55) is engaged with a second synchronous pulley (56), and the inner wall of the second synchronous pulley (56) is threadedly connected with a screw rod (57).
6. The automotive transfer case housing air tightness detection system of claim 5, wherein: Both ends of the screw rod (57) are fixed with limit blocks (58), the outer side of the screw rod (57) is slidably connected with a top disc (59), the top disc (59) and the second arm (44) are fixed with a telescopic rod (510), the outer side of the screw rod (57) is threadedly connected with a nut (511), the outer side of the top disc (59) is rotatably connected with four finger joints (512), the inner wall of the finger joint (512) is rotatably connected with a connecting rod (513), and the connecting rod (513) is rotatably connected to the inner wall of the nut (511).
7. The system for detecting air tightness of an automotive transfer case housing according to claim 1, characterized in that: The detection mechanism (7) comprises a mounting frame (71) fixed to the top of the detection table (6), a plugging air cylinder (72) is installed on the inner wall of the mounting frame (71), the top of the detection table (6) is respectively fixed with a second detection station (73) and a mounting plate (74), the top of the mounting plate (74) is fixed with an electric sliding rail (75), and the outer side of the electric sliding rail (75) is slidably connected with a first detection station (76).