A transmission front-end test bench

Abstract

This invention relates to the field of transmission testing technology, and more particularly to a transmission front-end test bench, comprising a triangular bracket, a supporting welded base, an adjusting base plate, a movable welded base, a bearing housing assembly, a motor movable mounting plate, a first moving mechanism, a second moving mechanism, a speed sensor, and a power distribution box. The movable welded base is slidably mounted on the adjusting base plate via the first moving mechanism. The bearing housing assembly is mounted on the movable welded base. The motor movable mounting plate is slidably mounted on the movable welded base via the second moving mechanism. The speed sensor is mounted on the movable welded base and connected to the power distribution box. This invention modifies the central part of the triangular bracket into a suspended structure, allowing for the removal and replacement of the test inertia disc or maintenance of the bearing housing without removing the transmission from the bench. Simultaneously, the first and second moving mechanisms are used for movement and adjustment. The first moving mechanism can axially adjust the overall position of the bearing housing.

Description

Technical Field

[0001] This invention relates to the field of transmission testing technology, specifically to a transmission front-end test bench. Background Technology

[0002] Transmission bench testing is a crucial step in product development. Bench tests reveal the transmission's performance and reliability, providing vital data support for designers. During bench testing, the transmission is secured to the test bench using a clutch housing mounting plate. This ensures both a horizontal mounting position and coaxial alignment with the drive motor. The main mounting structure is as follows: Figure 1 As shown.

[0003] Traditional front-end test benches are usually enclosed structures, which have many limitations in use: for example, the rotating support structure at one shaft end is weak and cannot be moved independently; frequent disassembly and assembly of the gearbox has a significant impact on its lifespan; and the lifespan of the bearings and bearing housings is relatively short. When the inertia disk at one shaft end needs to be replaced during synchronizer testing, the gearbox must be removed first, which is time-consuming and laborious. All of these aspects bring a lot of inconvenience to daily use and maintenance. Summary of the Invention

[0004] In view of the many limitations of existing technologies, such as the inconvenience of disassembling and assembling the inertia disk, the deviation in speed measurement, and the blind spot in disassembling and assembling the motor, the present invention provides a transmission front-end test bench.

[0005] This invention is achieved through the following technical solution:

[0006] A front-end test bench for a transmission includes a triangular bracket, a supporting welding base, an adjusting base plate, a movable welding base, a bearing housing assembly, a motor movable mounting plate, a first moving mechanism, a second moving mechanism, a speed sensor, and a power distribution box. The supporting welding base is fixedly mounted on the triangular bracket, and the adjusting base plate is fixedly connected to the supporting welding base. The movable welding base is slidably mounted on the adjusting base plate via the first moving mechanism. The bearing housing assembly is mounted on the movable welding base, and the motor movable mounting plate is slidably mounted on the movable welding base via the second moving mechanism. The motor movable mounting plate is used to mount a motor, and the bearing housing assembly is connected to the motor. The speed sensor is mounted on the movable welding base and connected to the power distribution box. The outer shell of the power distribution box is connected to the triangular bracket.

[0007] Preferably, the first moving mechanism includes a first fixed seat, a first support seat, a first lead screw, a first locking nut, and a first limiting washer. The first fixed seat is connected to the supporting welding base, the first support seat is connected to the moving welding base, the first lead screw passes through the first fixed seat and the first support seat in sequence and is connected to the first limiting washer, the first support seat is threadedly slidably disposed on the first lead screw, and the first locking nut is sleeved on the first lead screw between the first fixed seat and the first support seat.

[0008] Preferably, the second moving mechanism includes a second fixed seat, a second support seat, a second lead screw, a second locking nut, and a second limiting washer. The second fixed seat is connected to the movable welding base, the second support seat is connected to the motor movable mounting plate, the second lead screw passes through the second fixed seat and the second support seat in sequence and is connected to the second limiting washer, the second support seat is threadedly slidably disposed on the second lead screw, and the second locking nut is sleeved on the second lead screw between the second fixed seat and the second support seat.

[0009] Preferably, the supporting welding base is provided with two first limiting strips that are arranged at relative intervals, and the movable welding base is slidably disposed between the two first limiting strips.

[0010] Preferably, the movable welding base is provided with two support blocks that are spaced apart from each other, and the motor movable mounting plate is connected to the support blocks.

[0011] Preferably, the support base is provided with a second limiting strip, and the end of the motor moving mounting plate is slidably connected to the second limiting strip.

[0012] Preferably, the movable welding base includes a mounting base plate, a measuring frame, an inertia disk, a spline sleeve, a bearing cover, and a speed measuring code disk. The mounting base plate is connected to the first moving mechanism. The measuring frame includes a safety cover plate, a mounting side plate, and two supporting side plates oppositely disposed on the mounting base plate. The safety cover plate and the two supporting side plates are connected to form a portal frame. The mounting side plates are connected to one side of the portal frame. The bearing housing assembly is disposed on the mounting side plate via the bearing cover. The inertia disk is connected to the spline sleeve. The spline sleeve and the speed measuring code disk are connected to the rotation shaft of the bearing housing assembly. The speed sensor is disposed on the safety cover plate.

[0013] Preferably, the safety cover is provided with a U-shaped hole, and the safety cover is connected to the support side plate through the U-shaped hole.

[0014] Preferably, the triangular bracket is further provided with an adjustment plate and a plurality of adjustment bolts. The adjustment plate has a plurality of adjustment holes, and the adjustment holes pass through the adjustment bolts and are connected to the triangular bracket. The outer diameter of the adjustment bolts is smaller than the diameter of the adjustment holes.

[0015] Preferably, the motor and the bearing housing assembly are connected by a flexible coupling.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention discloses a transmission front-end test bench by modifying the central part of the triangular support into a suspended structure. This allows for the removal and replacement of the test inertia disc or maintenance of the bearing housing without removing the transmission from the bench. Simultaneously, a first moving mechanism and a second moving mechanism are used for movement and adjustment. The first moving mechanism can axially adjust the overall position of the bearing housing, allowing the transmission shaft to be disengaged from the spline sleeve during transmission assembly and disassembly, avoiding damage to the bearing housing. The second moving mechanism can adjust the position of the drive motor, enabling connection or disconnection between the motor and the bearing housing without disassembling the motor. This allows for main gearbox test mode or auxiliary gearbox test mode, facilitating movement and disassembly. This bench can be installed on light, medium, and heavy-duty automotive manual transmissions and AMT transmissions, enabling related performance studies and reliability tests. It is easy to assemble and disassemble, and the relevant connecting parts are consistent with other test benches, facilitating spare parts maintenance and management.

[0018] Furthermore, the speed sensor can be axially adjusted to ensure a more precise alignment between the speed sensor and the speed encoder, resulting in more accurate speed measurement. It is also equipped with a safety cover to eliminate potential safety hazards.

[0019] Furthermore, the adjustment plate is finely adjusted based on the center deviation measured during installation to ensure that the center of the test bench and the transmission are on the same axis.

[0020] Furthermore, using a flexible coupling to connect the motor and bearing housing assembly results in a short overall length, easy installation, low inertia, and good vibration damping performance. It can transmit torque with zero backlash and no vibration, reducing the risk of electrical sparks during operation. Attached Figure Description

[0021] Figure 1 A schematic diagram of a traditional transmission bench installation;

[0022] Figure 2 This is a schematic diagram of the installation of a front-end test bench for a transmission according to the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a transmission front-end test bench according to the present invention;

[0024] Figure 4 This is a structural diagram of a triangular support frame;

[0025] Figure 5 This is a structural diagram of the first limiting bar;

[0026] Figure 6 Three views of the support welding base;

[0027] Figure 7 This is a structural diagram of the first moving lead screw;

[0028] Figure 8 To adjust the base plate structure diagram;

[0029] Figure 9 Structural diagram of the movable welding base;

[0030] Figure 10 A cross-sectional view of the movable welding base;

[0031] Figure 11 Here is a structural diagram of the bearing housing assembly;

[0032] Figure 12 For the structure diagram of the safety cover plate;

[0033] Figure 13 This is a structural diagram of the motor moving mounting plate;

[0034] Figure 14 To adjust the flat plate structure diagram.

[0035] In the diagram, 1. Triangular bracket; 101. Bottom mounting plate; 102. Bearing mounting plate; 103. Triangular side plate; 104. Stiffening rib; 105. Bearing mounting hole; 2. First limiting strip; 3. Support welding base; 4. First moving mechanism; 401. First fixed seat; 402. First support seat; 403. First locking nut; 404. First limiting washer; 405. First lead screw; 5. Second moving mechanism; 6. Adjusting base plate; 7. Moving welding base; 701. Mounting base plate; 702. Inertia disk 703. Spline sleeve; 704. Bearing cover; 705. Speed ​​encoder; 706. Safety cover; 707. Mounting side plate; 708. Support side plate; 8. Support base block; 9. Motor moving mounting plate; 10. Second limit bar; 11. Motor; 12. Coupling; 13. Adjusting plate; 14. Distribution box; 15. Bearing housing assembly; 1501. Rotating shaft; 1502. Bearing housing shell; 1503. Bearing outer ring spacer; 1504. Bearing body; 16. Fixing bolt; 17. Speed ​​sensor. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.

[0037] This invention discloses a front-end test bench for a transmission, with reference to... Figure 2 , 3It includes a triangular bracket 1, a supporting welding base 3, an adjusting base plate 6, a movable welding base 7, a bearing housing assembly 15, a motor movable mounting plate 9, a first moving mechanism 4, a second moving mechanism 5, a speed sensor 17, and a power distribution box 14.

[0038] The triangular bracket 1 is connected and fixed to the test chamber base or iron base plate, and the supporting welding base 3 is fixedly set on the triangular bracket 1. In this embodiment, the supporting welding base 3 has multiple U-shaped holes, as shown in the reference. Figure 4 The triangular bracket 1 includes a bottom mounting plate 101, a bearing mounting plate 102, and two triangular side plates 103. The bearing mounting plate 102 is vertically welded to the bottom mounting plate 101. The two triangular side plates 103 are welded parallel to each other on the same side of the bearing mounting plate 102. The bottom of the triangular side plates 103 is connected to the bottom mounting plate 101. Two stiffening ribs 104 are welded to the opposite side of the bearing mounting plate 102 and the triangular side plates 103. A bearing mounting hole 105 is provided in the middle of the bearing mounting plate 102. Multiple threaded holes are provided on the bottom mounting plate 101. The threaded holes correspond one-to-one with the U-shaped holes on the supporting welding base 3. The bottom mounting plate 101 is connected to the supporting welding base 3 through the threaded holes and the U-shaped holes.

[0039] Reference Figure 5 , 6 The welding base 3 is provided with two first limiting strips 2 that are set at relative intervals, and the movable welding base 7 is slidably set between the two first limiting strips 2.

[0040] Reference Figure 7 The movable welding base 7 is slidably mounted on the adjusting base plate 6 via the first moving mechanism 4. The first moving mechanism 4 includes a first fixed base 401, a first support base 402, a first lead screw 405, a first locking nut 403, and a first limiting washer 404. The first fixed base 401 is connected to the mounting base plate 701, the first support base 402 is connected to the movable welding base 7, the first lead screw 405 passes through the first fixed base 401 and the first support base 402 in sequence and is connected to the first limiting washer 404, the first support base 402 is threadedly slidably mounted on the first lead screw 405, the first locking nut 403 is sleeved on the first lead screw 405 between the first fixed base 401 and the first support base 402, and the first washer is connected to the first lead screw 405 via a fixing bolt 16.

[0041] Reference Figure 8 The base plate 6 is fixedly connected to the support welding base 3. In this embodiment, the base plate 6 is provided with a countersunk hole, and the support welding base 3 is provided with a threaded hole. The base plate 6 is connected to the support welding base 3 through the countersunk hole and the threaded hole of the support welding base 3.

[0042] Reference Figure 9 and 10The movable welding base 7 includes a mounting base plate 701, a measuring frame, an inertia disk 702, a spline sleeve 703, a bearing cover 704, and a speed encoder 705. The mounting base plate 701 is connected to the first moving mechanism 4. The measuring frame includes a safety cover plate 706, a mounting side plate 707, and two supporting side plates 708 oppositely disposed on the mounting base plate 701. The safety cover plate 706 and the two supporting side plates 708 are connected to form a portal frame, and the mounting side plate 707 is connected to one side of the portal frame. The bearing housing assembly 15 is disposed on the mounting side plate 707 via the bearing cover 704. The bearing cover 704 is connected to the bearing housing shell 1502, and its function is to press the bearing and prevent axial movement of the bearing. The inertia disk 702 is threadedly connected to the outer side of the spline sleeve 703. The spline sleeve 703 and the speed encoder 705 are connected to the rotating shaft 1501 of the bearing housing assembly 15.

[0043] In order to limit the sliding distance of the movable welding base 7, the adjusting base plate 6 is provided with a countersunk hole in this embodiment, and the mounting base plate 701 is provided with a U-shaped hole. The mounting base plate 701 is connected to the adjusting base plate 6 through the U-shaped hole and the countersunk hole.

[0044] Reference Figure 11 The bearing housing assembly 15 is mounted on a movable welding base. The bearing housing assembly 15 includes a rotating shaft 1501, a bearing housing shell 1502, a bearing outer ring spacer 1503, a bearing inner ring spacer, and two bearing bodies 1504. The bearing housing shell 1502 is first connected and fixed to the welding base, then the bearing is fitted onto the rotating shaft 1501, and the bearing inner ring spacer is installed between the two bearing bodies 1504. Finally, the rotating shaft 1501 is installed into the bearing housing shell 1502.

[0045] Reference Figure 12 The speed sensor 17 is mounted on the safety cover 706 on the movable welding base 7. The safety cover 706 has a U-shaped hole and is connected to the support side plate 708 through the U-shaped hole. The position of the speed sensor 17 can be adjusted by changing the position of the safety cover 706.

[0046] The speed sensor 17 is connected to the power distribution box 14 via a cable. The outer shell of the power distribution box 14 is connected to the triangular bracket 1 of the triangular side plate 103. In this embodiment, the triangular bracket 1 has a round hole for easy wiring.

[0047] The motor movable mounting plate 9 is slidably mounted on the movable welding base 7 via the second moving mechanism 5. The second moving mechanism 5 includes a second fixed seat, a second support seat, a second lead screw, a second locking nut, and a second limiting washer. The second fixed seat is connected to the movable welding base 7, and the second support seat is connected to the motor movable mounting plate 9. The second lead screw passes through the second fixed seat and the second support seat in sequence and is connected to the second limiting washer. The second support seat is slidably mounted on the second lead screw, and the second locking nut is sleeved on the second lead screw between the second fixed seat and the second support seat.

[0048] The movable welding base 7 is provided with two support blocks 8 that are arranged at relative intervals. In this embodiment, the support blocks 8 are provided with countersunk holes, and the mounting base plate 701 of the movable welding base 7 is provided with threaded holes. The support blocks 8 are connected to the mounting base plate 701 through the countersunk holes and threaded holes.

[0049] A second limiting strip 10 is provided on the support base block 8. In this embodiment, the second limiting strip 10 has a countersunk hole, and the support base block 8 has a first threaded hole. The second limiting strip 10 is connected to the support base block 8 through the countersunk hole and the first threaded hole. The end of the motor moving mounting plate 9 is slidably connected to the second limiting strip 10.

[0050] Reference Figure 13 The motor movable mounting plate 9 is connected to the support base block 8. In this embodiment, the motor movable mounting plate 9 has a U-shaped hole, and the support base block 8 has a second threaded hole. The motor movable mounting plate 9 is connected to the support base block 8 through the U-shaped hole and the second threaded hole. The motor movable mounting plate 9 is used to mount the motor 11, and the bearing housing assembly 15 is connected to the motor 11 through a flexible coupling 12.

[0051] Reference Figure 14 The triangular bracket 1 is also equipped with an adjusting plate 13 and multiple adjusting bolts. The adjusting plate 13 has multiple adjusting holes, which pass through the adjusting bolts and connect to the bearing mounting plate 102 of the triangular bracket 1. The outer diameter of the adjusting bolt is smaller than the diameter of the adjusting hole. For example, if the diameter of the adjusting hole is 19mm and the mating thread is 18mm, then the adjusting plate 13 can move up or down by 1mm to achieve fine-tuning of the center. When the transmission shaft and the spline sleeve 703 are on the same center line, the bolts are tightened to complete the adjustment.

[0052] When disassembling or installing the gearbox and inertia disc 702, adjust the first lead screw 405, move the bearing seat axially, and adjust the position of the spline sleeve 703; when it is necessary to use or disengage the motor 11, adjust the second lead screw to engage or disengage the coupling 12.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the technical solution of the present invention in any way. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can be modified and replaced in several simple ways, and these modifications and replacements are all within the scope of protection covered by the claims.

Claims

1. A test bench for the front end of a transmission, characterized in that, The system includes a triangular bracket (1), a supporting welding base (3), an adjusting base plate (6), a movable welding base (7), a bearing housing assembly (15), a motor movable mounting plate (9), a first moving mechanism (4), a second moving mechanism (5), a speed sensor (17), and a power distribution box (14). The supporting welding base (3) is fixedly mounted on the triangular bracket (1), the adjusting base plate (6) is fixedly connected to the supporting welding base (3), and the movable welding base (7) is slidably mounted on the adjusting base plate (6) via the first moving mechanism (4). Above, the bearing housing assembly (15) is mounted on the movable welding base (7), the motor movable mounting plate (9) is slidably mounted on the movable welding base (7) through the second moving mechanism (5), the motor movable mounting plate (9) is used to mount the motor (11), the bearing housing assembly (15) is connected to the motor (11); the speed sensor (17) is mounted on the movable welding base (7), the speed sensor (17) is connected to the distribution box (14), the outer shell of the distribution box (14) is connected to the triangular bracket (1); The movable welding base (7) includes a mounting base plate (701), a measuring frame, an inertia disk (702), a spline sleeve (703), a bearing cap (704), and a speed measuring code disk (705). The mounting base plate (701) is connected to the first moving mechanism (4). The measuring frame includes a safety cover plate (706), a mounting side plate (707), and two supporting side plates (708) oppositely arranged on the mounting base plate (701). The safety cover plate (706) and the two supporting side plates... The plates (708) are connected to form a portal frame, and the mounting side plate (707) is connected to one side of the portal frame; the bearing housing assembly (15) is mounted on the mounting side plate (707) through the bearing cover (704); the inertia disk (702) is connected to the spline sleeve (703); the spline sleeve (703) and the speed measuring code disk (705) are connected to the rotating shaft (1501) of the bearing housing assembly (15); the speed measuring sensor (17) is mounted on the safety cover plate (706).

2. The transmission front-end test bench according to claim 1, characterized in that, The first moving mechanism (4) includes a first fixed seat (401), a first support seat (402), a first lead screw (405), a first locking nut (403), and a first limiting washer (404). The first fixed seat (401) is connected to the supporting welding base (3), and the first support seat (402) is connected to the moving welding base (7). The first lead screw (405) passes through the first fixed seat (401) and the first support seat (402) in sequence and is connected to the first limiting washer (404). The first support seat (402) is threadedly slidably disposed on the first lead screw (405). The first locking nut (403) is sleeved on the first lead screw (405) between the first fixed seat (401) and the first support seat (402).

3. The transmission front-end test bench according to claim 1, characterized in that, The second moving mechanism (5) includes a second fixed seat, a second support seat, a second lead screw, a second locking nut, and a second limiting washer. The second fixed seat is connected to the movable welding base (7), and the second support seat is connected to the motor movable mounting plate (9). The second lead screw passes through the second fixed seat and the second support seat in sequence and is connected to the second limiting washer. The second support seat is threaded and slidably disposed on the second lead screw. The second locking nut is sleeved on the second lead screw between the second fixed seat and the second support seat.

4. The transmission front-end test bench according to claim 1, characterized in that, The supporting welding base (3) is provided with two first limiting strips (2) that are arranged at relative intervals, and the movable welding base (7) is slidably arranged between the two first limiting strips (2).

5. The transmission front-end test bench according to claim 1, characterized in that, The movable welding base (7) is provided with two support blocks (8) arranged at relative intervals, and the motor movable mounting plate (9) is connected to the support blocks (8).

6. The transmission front-end test bench according to claim 5, characterized in that, The support base (8) is provided with a second limiting strip (10), and the end of the motor moving mounting plate (9) is slidably connected to the second limiting strip (10).

7. The transmission front-end test bench according to claim 1, characterized in that, The safety cover (706) is provided with a U-shaped hole, and the safety cover (706) is connected to the support side plate (708) through the U-shaped hole.

8. The transmission front-end test bench according to claim 1, characterized in that, The triangular bracket (1) is also provided with an adjustment plate (13) and a plurality of adjustment bolts. The adjustment plate (13) has a plurality of adjustment holes, and the adjustment holes are connected to the triangular bracket (1) through the adjustment bolts. The outer diameter of the adjustment bolts is smaller than the diameter of the adjustment holes.

9. The transmission front-end test bench according to claim 1, characterized in that, The motor (11) and the bearing housing assembly (15) are connected by a flexible coupling (12), which is a flexible coupling (12) with a clamping bushing.

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