Auxiliary tool for gear debugging of transmission

Abstract

The invention provides an auxiliary tool for gear debugging of a transmission. The tool comprises a driving rod which is provided with a working end and an operating end which are oppositely arranged; the guide positioning block is connected with the driving rod, the guide positioning block is provided with a first abutting surface and a second abutting surface which are oppositely arranged in the axial direction of the driving rod, the first abutting surface is arranged towards the working end of the driving rod, and the second abutting surface is arranged towards the operating end; the guide positioning block is further provided with a transition inclined face connected with the first abutting face and the second abutting face, and the distance between the transition inclined face and the axis of the driving rod is gradually reduced from the operation end to the working end. When the driving rod is located at the initial position, the transition inclined face makes contact with a gear shifting plectrum of the transmission, in the process that the driving rod moves in the gear shifting direction, the gear shifting plectrum rotates so as to be gradually away from the operation end along the transition inclined face, and when gear shifting of the gear shifting plectrum is completed, the gear shifting plectrum abuts against the first abutting face. The second abutting surface abuts against an emergency shift bolt of the transmission.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transmission debugging, in particular to a transmission gear debugging auxiliary tool. BACKGROUND

[0002] In the prior art, manual operation of mechanical unlocking devices (such as using a screwdriver, an iron rod, or other non-special tools to push and push the piece) requires a lot of force and precise operation skills, which is a challenge for factory assembly operators and quality inspectors, especially when working in a narrow space. This not only increases the complexity and time consumption of the operation, but also makes it difficult to meet the rhythm requirements of the high-speed production line.

[0003] In view of the above technical problems, no effective solution has been proposed so far. SUMMARY

[0004] The main purpose of the present application is to provide a transmission gear debugging auxiliary tool to solve the problem of inconvenient transmission gear switching operation in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a transmission gear debugging auxiliary tool is provided, comprising: a driving rod having a working end and an operating end arranged opposite to each other; a guide positioning block connected with the driving rod, the guide positioning block having a first abutting surface and a second abutting surface arranged opposite to each other along the axial direction of the driving rod, the first abutting surface being arranged towards the working end of the driving rod, and the second abutting surface being arranged towards the operating end, the guide positioning block further having a transition inclined surface connecting the first abutting surface and the second abutting surface, the distance between the transition inclined surface and the axis of the driving rod gradually decreasing from the operating end to the working end; wherein, when the driving rod is in the initial position, the transition inclined surface is in contact with the shift knob of the transmission, during the movement of the driving rod in the gear shifting direction, the shift knob rotates to gradually move away from the operating end along the transition inclined surface, and when the shift knob is completed, the shift knob is in abutment with the first abutting surface, and the second abutting surface is in abutment with the emergency shift bolt of the transmission.

[0006] Further, the transmission gear debugging auxiliary tool further comprises: a limiting component connected with the driving rod, and arranged at an included angle with the guide positioning block along the circumferential direction of the driving rod, the limiting component being matched with the limiting structure of the transmission; wherein, when the shift knob is completed, the limiting component and the limiting structure are in a limiting cooperation state to limit the displacement of the driving rod in the axial direction.

[0007] Further, the limiting structure comprises a limiting boss arranged close to the edge of the housing of the transmission, and the limiting assembly further comprises a limiting buffer block connected with the driving rod and arranged at an angle with the guide positioning block along the circumferential direction of the driving rod, wherein when the gear shifting paddle is completed, the limiting buffer block is located on the side of the limiting boss away from the edge of the housing and abuts against the limiting boss.

[0008] Further, the transition slope is a straight surface, or at least part of the transition slope is an arc surface.

[0009] Further, the working end of the driving rod is provided with a contact head, and the outer peripheral surface of the contact head is a spherical surface.

[0010] Further, the driving rod comprises a main body segment and a handheld segment, wherein the limiting assembly and the guide positioning block are connected with the main body segment, the end of the main body segment away from the handheld segment forms the working end, the end of the handheld segment away from the main body segment forms an operating end, and the outer part of the handheld segment is covered with a protective sleeve.

[0011] Further, the end surface of the protective sleeve close to the main body segment is arranged flush with the edge of the housing.

[0012] Further, the protective sleeve is made of rubber material.

[0013] Further, along the radial direction of the driving rod, the guide positioning block is arranged close to the working end, and the limiting assembly is located on the side of the guide positioning block facing the operating end.

[0014] Further, along the circumferential direction of the driving rod, the included angle between the geometric center line of the guide positioning block and the geometric center line of the limiting assembly is α, wherein α≥120°.

[0015] By arranging the operating end, the operator can control the driving rod to move in a specific direction through the operating end, so as to make the gear shifting paddle perform gear shifting operation. The driving rod has a certain length, so that the operating end can extend to the outside of the transmission, thereby facilitating the operator to hold the operating end and push the gear shifting paddle to move with small force. The present application is suitable for gear shifting operation in a narrow space, solves the problem that the narrow environment is not conducive to gear shifting operation in the prior art, and further solves the problem that the gear shifting paddle automatically returns to the original position after gear shifting operation in the prior art. The transmission gear position debugging auxiliary tool in the embodiment can realize more labor-saving and convenient gear shifting operation, avoid the gear shifting paddle from automatically returning to the original position after gear shifting, and solve the problem of inconvenient gear shifting operation in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification. The embodiments of the application, and their

[0017] Figure 1 Fig. 1 shows a structural schematic diagram of an embodiment of a transmission gear debugging auxiliary tool cooperating with a transmission according to the present application;

[0018] Figure 2 Fig. 2 shows a structural schematic diagram of an embodiment of a transmission according to the present application; Figure 1 Fig. 3 shows an enlarged schematic diagram of part A of Fig. 2;

[0019] Figure 3 Fig. 4 shows a structural schematic diagram of an embodiment of a transmission according to the present application;

[0020] Figure 4 Fig. 5 shows a structural schematic diagram of an embodiment of a transmission gear debugging auxiliary tool according to the present application.

[0021] In the above drawings, the following reference signs are used:

[0022] 10, driving rod; 101, main body segment; 102, hand-held segment; 103, protective sleeve;

[0023] 110, working end; 120, operating end;

[0024] 20, guiding and positioning block; 210, first abutting surface; 220, second abutting surface; 230, transition inclined surface;

[0025] 40, transmission; 410, gear shifting tab; 420, emergency gear shifting bolt; 430, limiting structure; 431, limiting boss; 440, housing edge;

[0026] 30, limiting assembly; 31, limiting buffer block. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, a step, an operation, a device, a component and / or a combination thereof.

[0029] It is to be understood that the terms "first", "second", and the like, used in the description and the claims of the present application as well as the preceding drawings do not by their conclusion imply any kind of preferences or ordinal sequence but are merely used to distinguish different characteristics. It is to be understood that the terms "including", "comprising", "having" and the like are to be construed as open-ended terms (i.e., meaning "including, but not limited to") unless otherwise noted to have a closed meaning (i.e., meaning "consisting of"). Thus, use of terms such as "including" and "having" is to be interpreted as specifying the presence of stated features or steps but not to the exclusion of others.

[0030] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in various different forms and should not be construed as being limited to only the embodiments set forth herein. It is understood that the embodiments are to be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should typically be considered as available for combinations with features or aspects of the other embodiments. In the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same reference numerals are used in different drawings to designate the same elements. Thus, detailed descriptions of the exemplary embodiments are not intended to limit the scope of the application, and the exemplary embodiments are provided only to more completely describe the application to those skilled in the art.

[0031] In conjunction with Figures 1 to 4 As shown, according to specific embodiments of the present application, a transmission gear debugging auxiliary tool is provided.

[0032] Specifically, the transmission gear debugging auxiliary tool comprises a driving rod 10 and a guide positioning block 20, the driving rod 10 has a working end 110 and an operating end 120 arranged oppositely; the guide positioning block 20 is connected with the driving rod 10, the guide positioning block 20 has a first abutting surface 210 and a second abutting surface 220 arranged oppositely along the axial direction of the driving rod 10, the first abutting surface 210 is arranged towards the working end 110 of the driving rod 10, the second abutting surface 220 is arranged towards the operating end 120, the guide positioning block 20 further has a transition inclined surface 230 connecting the first abutting surface 210 and the second abutting surface 220, the distance between the transition inclined surface 230 and the axis of the driving rod 10 is gradually reduced from the operating end 120 to the working end 110; wherein, when the driving rod 10 is in an initial position, the transition inclined surface 230 is in contact with a shift paddle 410 of a transmission 40, in the process of moving the driving rod 10 along the gear shifting direction, the shift paddle 410 rotates to gradually move away from the operating end 120 along the transition inclined surface 230, when the shift paddle 410 completes the gear shifting, the shift paddle 410 is in abutment with the first abutting surface 210, and the second abutting surface 220 is in abutment with an emergency gear shifting bolt 420 of the transmission 40.

[0033] The technical scheme is applied, the operator can control the driving rod 10 to move in a specific direction through the operation end 120, so that the gear shifting paddle 410 performs gear shifting operation, the driving rod 10 has a certain length, the operation end 120 can extend out of the transmission 40, so that the operator can hold the operation end 120 and push the gear shifting paddle 410 to move with small force, which is suitable for gear shifting operation in a narrow space, solves the problem that the narrow environment is not conducive to gear shifting operation in the prior art, in addition, after gear shifting is completed, the guide positioning block 20 is located between the gear shifting paddle 410 and the emergency gear shifting bolt 420, and the first abutting surface 210 abuts against the gear shifting paddle 410, so that the gear shifting paddle 410 is prevented from shaking during transmission debugging, and the gear shifting paddle 410 is ensured to maintain the position after gear shifting, solving the problem that the gear shifting paddle 410 automatically returns to the original position after gear shifting in the prior art, the transmission gear position debugging auxiliary tool in the embodiment can realize more labor-saving and convenient gear shifting operation, while avoiding the gear shifting paddle 410 from automatically returning to the original position after gear shifting, and solves the problem that gear shifting operation is inconvenient in the prior art.

[0034] In the embodiment, the radial movement of the driving rod 10 and the transition slope of the guide positioning block can be used to accurately operate the transmission gear shifting paddle 410. In the initial position, the transition slope 230 is in contact with the gear shifting paddle 410, as the driving rod 10 moves along the gear shifting direction, the gear shifting paddle 410 gradually rotates along the transition slope 230 and moves away from the operation end 120, until the gear shifting is completed, at this time, the gear shifting paddle 410 abuts against the first abutting surface of the guide positioning block 20, and the second abutting surface of the guide positioning block abuts against the emergency gear shifting bolt of the transmission, through the cooperation of the driving rod and the transition slope, the problem of difficult operation is solved, and labor-saving operation is realized; through the accurate design of the guide positioning block, the risk of part damage is avoided, and the positioning accuracy is improved; through quick positioning and labor-saving driving, the problem of low operation efficiency is reduced, and the smooth progress of the production line rhythm is ensured; through the buffer structure of the guide positioning block, the safety risk in the operation process is reduced, and the overall operation safety is improved.

[0035] As shown in Figure 3 , the gear shifting paddle 410 is rotatably arranged to realize gear shifting, in Figure 3 , the solid gear shifting paddle 410 represents the gear shifting paddle 410 in the P gear position, and the dashed gear shifting paddle 410 represents the gear shifting paddle 410 in the P gear release position, after the transmission gear position debugging auxiliary tool contacts the gear shifting paddle 410, the gear shifting paddle 410 can be driven to rotate from the P gear position to the P gear release position, so as to realize transmission gear shifting, after the gear shifting is completed, the guide positioning block 20 of the transmission gear position debugging auxiliary tool is clamped between the gear shifting paddle 410 and the emergency gear shifting bolt 420, so as to fix the gear shifting paddle 410 in the P gear release position.

[0036] Further, the transmission gear debugging auxiliary tool further comprises a limiting assembly 30, the limiting assembly 30 is connected with the driving rod 10, and the limiting assembly 30 is arranged at an angle with the guide positioning block 20 along the circumferential direction of the driving rod 10, and the limiting assembly 30 is matched with the limiting structure 430 of the transmission 40; wherein when the shift paddle 410 completes the gear shifting, the limiting assembly 30 and the limiting structure 430 are in a limiting matching state to limit the displacement of the driving rod 10 in the axial direction.

[0037] In the embodiment, the limiting assembly 30 is connected with the driving rod 10, and the limiting assembly 30 is matched with the limiting structure 430 of the transmission 40. When the shift paddle 410 completes the gear shifting action, the limiting assembly 30 and the limiting structure 430 enter the limiting matching state, effectively limiting the free displacement of the driving rod 10, ensuring the accuracy and stability of the tool in the operation process, preventing accidental sliding of the tool in the operation process, and enhancing the safety and reliability of the operation.

[0038] Further, the limiting structure 430 comprises a limiting boss 431 arranged close to the shell edge 440 of the transmission 40, and the limiting assembly 30 further comprises a limiting buffer block 31, the limiting buffer block 31 is connected with the driving rod 10 and arranged at an angle with the guide positioning block 20 along the circumferential direction of the driving rod 10; wherein when the shift paddle 410 completes the gear shifting, the limiting buffer block 31 is located on the side of the limiting boss 431 away from the shell edge 440 and abuts against the limiting boss 431.

[0039] In the embodiment, the limiting structure 430 comprises the limiting boss 431 arranged close to the shell edge 440 of the transmission 40. The limiting assembly 30 comprises the limiting buffer block 31 connected with the driving rod 10. When the shift paddle 410 completes the gear shifting action, the limiting buffer block 31 is located on the side of the limiting boss 431 away from the shell edge 440 and abuts against the limiting boss 431. This arrangement ensures that the tool can safely and stably lift the shift paddle 410 during operation, ensures the accuracy and stability of the tool in the operation process, prevents accidental sliding of the tool in the operation process, and enhances the safety and reliability of the operation.

[0040] Optionally, the transition slope 230 is a straight surface. The transition slope 230 is in the form of a straight surface.

[0041] In the embodiment, the transition slope 230 arranged in the form of a straight surface enables the transition slope 230 to provide a flat and stable transition path during the gear shifting of the shift paddle 410, and the shift paddle 410 is subjected to more uniform force, avoiding possible material damage or indentation.

[0042] Optionally, at least part of the transition slope 230 is an arc surface.

[0043] In the present embodiment, the transition slope 230 of the arc surface can accommodate a larger angle change, allowing the shift paddle 410 to move along a curve rather than a straight line during the lifting process, suitable for those requiring more precise control of angle changes or encountering non-standard internal structures of the transmission, and can more flexibly adapt to the subtle differences of different vehicle models or transmission models.

[0044] Further, the working end 110 of the driving rod 10 is provided with a contact head, and the outer peripheral surface of the contact head is a spherical surface.

[0045] In the present embodiment, the working end 110 of the driving rod 10 is provided with a contact head, and the outer peripheral surface of the contact head is designed as a spherical surface, so that the contact head can adapt to various contact angles when contacting the shift paddle 410. Regardless of the initial position of the shift paddle 410, the contact head can smoothly contact and apply force to it. The spherical contact head can form a larger contact area at the contact point, which helps to evenly distribute the force and avoid local high stress, thereby protecting the shift paddle 410 from being damaged and preventing the driving rod 10 from being worn during operation.

[0046] Further, the driving rod 10 comprises a main body section 101 and a handheld section 102, wherein the limiting assembly 30 and the guide positioning block 20 are connected to the main body section 101, the end of the main body section 101 away from the handheld section 102 forms the working end 110, the end of the handheld section 102 away from the main body section 101 forms the operating end 120, and the outer part of the handheld section 102 is covered with a protective sleeve 103.

[0047] In the present embodiment, the driving rod 10 is composed of a main body section 101 and a handheld section 102, the working end 110 is connected to the limiting assembly 30 and the guide positioning block 20, and the operating end 120 is convenient for the operator to apply force. The working end 110 of the main body section 101 can be used for precise positioning and driving the guide positioning block 20 and the limiting assembly 30, ensuring stable and accurate force transmission during the unlocking process of the transmission shift paddle. The protective sleeve 103 on the outer part of the handheld section 102 not only provides additional comfort for holding, but also enhances the safety of operation, preventing the hands from slipping or being injured during operation. This overall design allows the operator to lift the shift paddle with stable and effective force, reducing the difficulty of operation and improving the efficiency of operation, while protecting the transmission housing and unlocking mechanism from damage.

[0048] Further, the end surface of the protective sleeve 103 close to the main body section 101 is arranged flush with the edge 440 of the housing.

[0049] In the embodiment, the end surface of the protective sleeve 103 close to the main body section 101 is flush with the housing edge 440, ensuring that the protective sleeve 103 can seamlessly fit the transmission housing edge 440 during the process of inserting the tool into the operation port and lifting the paddle, providing uniform buffering and avoiding scratches caused by direct contact between the tool and the housing. At the same time, the flush end surface of the protective sleeve 103 serves as a guide reference, enhancing the positioning stability when the tool is inserted, allowing the operator to more accurately align the tool with the paddle, reducing the operation error caused by inaccurate positioning, and thus improving the efficiency and reliability of the entire unlocking process.

[0050] Further, the protective sleeve 103 is made of rubber material.

[0051] In the embodiment, the protective sleeve 103 is made of rubber material, which has good elasticity and wear resistance, providing good buffering effect when the tool contacts the transmission housing, effectively avoiding the problem of surface scratches caused by direct contact of metal parts, and also reducing the risk of damage to the drive rod 10 caused by improper operation.

[0052] Further, along the radial direction of the drive rod 10, the guide positioning block 20 is arranged close to the working end 110, and the limiting component 30 is located on the side of the guide positioning block 20 facing the operation end 120.

[0053] In the embodiment, the guide positioning block 20 is closer to the working end 110, and the limiting component 30 is located on the side of the guide positioning block 20 facing the operation end 120. Such layout not only optimizes the force transmission path, allowing the operator to control the movement of the guide positioning block 20 more easily and accurately when rotating the drive rod 10, but also ensures the stability and safety of the tool during use through the position setting of the limiting component 30, effectively avoiding damage to the unlocking rod or scratches on the housing caused by improper tool position. The relative arrangement of the limiting component 30 and the guide positioning block 20 allows the tool to accurately align with the unlocking rod throughout the entire operation process, enabling quick positioning and unlocking even in narrow spaces, greatly improving work efficiency, reducing operation difficulty, and ensuring the quality of transmission assembly and the safety of the operator. In addition, the design of the limiting component 30 on the side of the operation end 120 also facilitates the operator to monitor the status of the tool in real time, ensuring the continuity and accuracy of the operation.

[0054] Further, along the circumferential direction of the drive rod 10, the included angle between the geometric center line of the guide positioning block 20 and the geometric center line of the limiting component 30 is α, where α≥120°.

[0055] In the embodiment, the guide positioning block 20 is circumferentially arranged on the driving rod 10 and forms an angle α with the limiting assembly 30 below it. During operation, the guide positioning block 20 and the limiting assembly 30 can work cooperatively to adapt to the uneven structure of the transmission surface and provide stable support and guiding effect.

[0056] The application also provides a preferred embodiment of a reusable Schaeffler 8AT transmission shift paddle auxiliary jacking tool. Without changing the original structure of the transmission and without modifying the software logic, the auxiliary jacking tool can replace non-professional tools (screwdrivers, iron rods, etc.) to safely and accurately jack the transmission shift paddle through precise positioning and labor-saving driving design, thereby solving the defects of the existing temporary operation.

[0057] Specifically, the auxiliary jacking tool in the embodiment is mainly adapted to the parking lock mechanical unlocking operation of the Schaeffler 8HP transmission. The tool adopts an integrated mechanical structure of “positioning-jacking-locking”, the main body is made of high-strength aluminum alloy, and the buffer is made of wear-resistant rubber. As shown in Figure 4 The auxiliary jacking tool mainly includes a guide positioning block 20, a labor-saving driving rod (i.e., the aforementioned driving rod 10), and a limiting buffer block 31. The structure parameters and functions are as follows.

[0058] The guide positioning block 20 has a total length of 30 mm and is wedge-shaped. The front end is a tapered guide section, the length of the tapered guide section is 20 mm, the large end diameter of the tapered guide section is 14 mm, the small end diameter of the tapered guide section is 10 mm, one end of the guide positioning block 20 is connected with the labor-saving driving rod, and the surface of the other end of the guide positioning block 20 is coated with rubber material with a thickness of 3 mm. The operator rotates the labor-saving driving rod to drive the guide positioning block 20 to rotate to the shift paddle 410 of the transmission between the glue injection bolt (i.e., the aforementioned emergency shift bolt 420), thereby jacking the shift paddle 410 of the transmission and unlocking the P gear.

[0059] The labor-saving driving rod is composed of a “push rod + handle”. The push rod is a 10 mm round steel, the length of the push rod is 100 mm, the front end of the push rod is processed into a hemispherical contact, the radius of the hemispherical contact is 5 mm, and the hemispherical contact is matched (contact area ≥ 20 mm²) with the end groove of the guide positioning block 20 and the limiting buffer block 31. The rotation of the handle realizes the axial rotation of the push rod, and the operating force is controlled to be less than 30 N.

[0060] The limiting buffer block 31 is sleeved below the guide positioning block 20 at a position of 40 mm and is distributed at an angle of 120 degrees with the guide positioning block 20 along the labor-saving driving rod. The limiting buffer block 31 is coated with rubber material with a thickness of 3 mm. When the limiting buffer block 31 is attached to the edge of the operation port of the transmission housing, a buffer is formed to avoid direct impact of metal on the housing.

[0061] It should be noted that the conical guide section can also be replaced by an elastic expansion structure (for example, built-in spring steel sheet), which automatically expands and positions after insertion, suitable for scenarios where the operating port size has a slight deviation. The main body can also be made of PA66+30% glass fiber, which reduces the overall weight by 15%. The push rod remains steel, reducing costs by 20%, and can be suitable for low-frequency operation scenarios.

[0062] The working principle of the auxiliary jacking tool in this embodiment is as follows:

[0063] Positioning stage: Align the conical guide section of the guide positioning block 20 with the shift paddle 410 of the transmission housing. Use the guiding nature of the conical structure to gently push the tool until the limiting buffer block 31 is in contact with the edge of the housing operating port. At this time, the guide positioning block 20 has initially entered the operating space, and the rubber coating on its surface is in contact with the housing to form a buffer, while providing a reference for subsequent rotation positioning.

[0064] Driving stage: The operator holds the handle of the labor-saving drive rod and rotates the push rod clockwise. The rotating force is transmitted to the guide positioning block 20 through the drive rod, which drives it to rotate around the axis. When the guide positioning block 20 rotates to the pre-set position between the shift paddle 410 of the transmission and the glue injection bolt, the wedge-shaped guide positioning jacks up the shift paddle 410. During rotation, the limiting buffer block 31 is distributed at 120° with the guide positioning block 20, maintaining a buffer contact with the edge of the housing operating port to avoid rigid collision between metals. Through the design of the handle and the push rod's force arm, the operating force is controlled within 30N, achieving labor-saving jacking until the shift paddle 410 is jacked up to the effective stroke of releasing P gear.

[0065] Reset stage: After debugging is completed, rotate the drive rod handle counterclockwise, and the push rod drives the guide positioning block 20 and the limiting buffer block 31 to rotate in the opposite direction, so that they are separated from the space between the shift paddle 410 and the glue injection bolt, and then the tool can be removed. If the P gear needs to be repeated due to software logic, the drive and reset steps can be directly repeated.

[0066] In the embodiment, the conical guide positioning structure is automatically centered through the gap with the shell, the labor-saving driving rod can be quickly centered through the shell operation port, and the quick positioning problem of the labor-saving driving rod in a narrow space is solved; the guide positioning block 20 and the limiting buffer block 31 are coated with rubber material on the surface, which can avoid scratching the shell; the labor-saving driving rod is matched with the gear recess, the guide positioning block 20 and the limiting buffer block 31 are distributed at an angle of 120 degrees, which can avoid the deformation of the driving rod due to unbalanced load, and ensure the assembly quality and service life of the auxiliary tool; the lever type labor-saving driving design can reduce the operating force to within 30N, which is suitable for the high-frequency operation demand of the production line; the overall structure only realizes the function through external operation, does not touch the original structure and software of the transmission at all, does not need to modify the structure and software of the transmission, directly adapts to the existing mechanical unlocking device, and is compatible with 8HP full series models to meet the adaptability requirements.

[0067] The auxiliary jacking tool in the embodiment can be used in whole vehicle assembly and test process, and specifically, is applied to the steps of transmission gear debugging of whole vehicle assembly line as follows.

[0068] Step S1, tool preparation: check that the contact of the push rod is not worn, and the rubber covering area is not aged (for example, the aging identification standard is that the rubber hardness deviation is less than or equal to 5°).

[0069] Step S2, positioning operation: align the labor-saving driving rod with the transmission shell operation port, and push the rubber buffer block against the transmission shell shift paddle 410 (the hand feeling resistance increases, and it is confirmed that there is no shaking).

[0070] Step S3, unlocking driving: the operator holds the handle of the labor-saving driving rod, rotates the push rod clockwise, drives the guide positioning block 20 to rotate through the driving rod, and rotates the guide positioning block 20 to a preset position between the shift paddle 410 and the glue injection bolt. With rotation, the guide positioning block 20 gradually jacks up the shift paddle 410, the operating force is controlled to be within 30N, and the shift paddle 410 is jacked up to the P-gear unlocking position (which can be confirmed through the gear indicator or mechanical feedback).

[0071] Step S4, debugging operation: after unlocking, perform transmission gear signal detection, shift mechanism matching and other assembly and debugging operations. If the software forcibly returns to the P-gear due to door opening, the P-gear can be unlocked again by repeating the unlocking driving step (without repositioning), and the debugging can be continued.

[0072] Step S5, tool reset: after the debugging is completed, rotate the handle of the labor-saving driving rod counterclockwise to drive the guide positioning block 20 to rotate reversely, so that the guide positioning block 20 is separated from the gap between the shift paddle 410 and the glue injection bolt, and the limiting buffer block 31 is rotated out of the limiting position to unlock the tool. After confirming that the tool completely exits the operation space, pull out the tool, check whether the workpiece surface is scratched, check the completeness of the tool surface rubber covering, and put it into a special storage box for standby.

[0073] Step S6, adaptability: by replacing different lengths of force-saving drive rods (e.g. 100mm / 120mm), the longitudinal (e.g. 8HP75) and horizontal (e.g. 8HP45) models of the Schaeffler 8HP transmission can be adapted (due to the difference in the distance from the shell operation port to the force-saving drive rod), and the guide positioning block 20 and the limiting buffer block 31 are universal, reducing the cost of tool switching.

[0074] The auxiliary jacking tool in the embodiment can realize quick positioning and force-saving driving of the force-saving drive rod, reduce the operation difficulty, adapt to narrow space operation, at the same time, avoid the shell scratch and force-saving drive rod deformation caused by tool slipping, improve the assembly quality, reduce the time-consuming of repeated operation caused by software forced return to P gear, and adapt to the production line rhythm.

[0075] The auxiliary jacking tool in the embodiment has the following beneficial effects:

[0076] 1) Efficiency is improved significantly: the positioning time is shortened to 5 seconds (reduced by 80% compared with the existing one), the cumulative operation time of a single vehicle is reduced from 3 minutes to 30 seconds, which meets the production line rhythm requirement; the force-saving structure reduces the operating force from ≥80N to ≤30N, reduces the labor intensity of workers, and reduces the efficiency fluctuation caused by fatigue.

[0077] 2) Zero-damage operation: the positioning mechanism ensures that the tool and the force-saving drive rod are directly opposite, avoids partial load, and reduces the deformation rate of the force-saving drive rod; the contact part between the tool and the shell is designed with rubber buffer, which completely eliminates the scratch of the shell.

[0078] 3) Strong compatibility: without changing any structure of the transmission (including mechanical unlocking device, shell, etc.), it directly adapts to the Schaeffler 8HP series transmission (longitudinal / horizontal model);

[0079] 4) Reusable (service life ≥10000 times), a single tool can cover the whole line assembly requirements, reducing the tool investment cost.

[0080] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof (e.g., "vertical ly", "horizontal ly", etc.) can refer to the relative positions of an apparatus or feature as shown in the drawings, and shall not be construed as limiting the present application to any particular spatial orientation. Furthermore, the terms "first", "second", third", etc. merely identify one of a number of similar features or steps in an embodiment, and are not intended to denote a spatial or chronological priority of such features or steps to one another. The terms "comprise", "comprising", "include", "including", and the like, as used herein, are specifically intended to be construed as open-ended terms (i.e., the terms do not exclude the presence of other elements or steps). It is specifically intended that any total number or range of steps or components to be

[0081] In addition, it should be understood that any numerical range recited herein includes all values from the lower and upper limits of that range. For example, if a concentration range is stated as 1% to 50%, it is intended that values ranging from 1% to 50%, such as 20%, are expressly enumerated. It is also understood that the endpoints of the ranges are not significant and are intended to be merely approximate. It is also understood that the description is not limited in scope to the specific embodiments described herein, which are intended for illustrative purposes only. Any change of numerical limitations, such as concentration ranges, temperature ranges, etc., are intended to be included in the scope of the present application.

[0082] In the above embodiments, the description of each embodiment is focused on a certain aspect, and the part not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0083] The above description is only preferred embodiments of the present application, and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A transmission gear tuning aid tool, characterized by, The utility model relates to a gear shifting device for a transmission (40), comprising: a driving rod (10) having a working end (110) and an operating end (120) arranged oppositely; a guide positioning block (20) connected with the driving rod (10), the guide positioning block (20) having a first abutting surface (210) and a second abutting surface (220) arranged oppositely along the axial direction of the driving rod (10), the first abutting surface (210) being arranged towards the working end (110) of the driving rod (10), and the second abutting surface (220) being arranged towards the operating end (120), the guide positioning block (20) further having a transition inclined surface (230) connecting the first abutting surface (210) and the second abutting surface (220), the distance between the transition inclined surface (230) and the axis of the driving rod (10) being arranged gradually decreasing from the operating end (120) to the working end (110); wherein, when the driving rod (10) is in an initial position, the transition inclined surface (230) is in contact with a shift paddle (410) of the transmission (40), during the movement of the driving rod (10) along a gear shifting direction, the shift paddle (410) rotates to gradually move away from the operating end (120) along the transition inclined surface (230), when the shift paddle (410) completes gear shifting, the shift paddle (410) is in abutment with the first abutting surface (210), and the second abutting surface (220) is in abutment with an emergency gear shifting bolt (420) of the transmission (40).

2. The transmission gear alignment aid of claim 1, wherein, Further comprising: a limiting component (30) connected with the driving rod (10) and arranged at an angle with the guide positioning block (20) along the circumferential direction of the driving rod (10), the limiting component (30) being arranged in matching with a limiting structure (430) of the transmission (40); wherein, when the shift paddle (410) completes gear shifting, the limiting component (30) and the limiting structure (430) are in a limiting matching state to limit the displacement of the driving rod (10) in the axial direction.

3. A transmission range alignment aid as claimed in claim 2, characterised in that, The limiting structure (430) comprises a limiting boss (431) arranged close to the housing edge (440) of the transmission (40), and the limiting component (30) further comprises: a limiting buffer block (31) connected with the driving rod (10) and arranged at an angle with the guide positioning block (20) along the circumferential direction of the driving rod (10); wherein, when the shift paddle (410) completes gear shifting, the limiting buffer block (31) is located on the side of the limiting boss (431) away from the housing edge (440) and is in abutment with the limiting boss (431).

4. The transmission gear alignment aid of claim 2, wherein, The transition inclined surface (230) is a straight surface, or at least part of the transition inclined surface (230) is an arc surface.

5. The transmission gear alignment aid of claim 2, wherein, The working end (110) of the driving rod (10) is provided with a contact head, and the outer peripheral surface of the contact head is a spherical surface.

6. The transmission gear alignment aid of claim 3, wherein, The driving rod (10) comprises a main body section (101) and a handheld section (102), wherein the limiting assembly (30) and the guiding positioning block (20) are connected with the main body section (101), one end of the main body section (101) away from the handheld section (102) forms the working end (110), one end of the handheld section (102) away from the main body section (101) forms the operation end (120), and the outer part of the handheld section (102) is covered with a protective sleeve (103).

7. A transmission range alignment aid as claimed in claim 6, characterised in that, The end face of the protective sleeve (103) close to the main body section (101) is arranged flush with the shell edge (440).

8. The transmission gear alignment aid of claim 6, wherein, The protective sleeve (103) is made of rubber material.

9. The transmission gear alignment aid tool of claim 2, wherein, Along the radial direction of the driving rod (10), the guiding positioning block (20) is arranged close to the working end (110), and the limiting assembly (30) is located on the side of the guiding positioning block (20) facing the operation end (120).

10. The transmission gear alignment aid tool of claim 2, wherein, Along the circumferential direction of the driving rod (10), the included angle between the geometric center line of the guiding positioning block (20) and the geometric center line of the limiting assembly (30) is α, wherein α≥120°.

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