Butt joint device for internal spline product

Abstract

The utility model belongs to the technical field of test equipment, and discloses a butt joint device for an internal spline product, which comprises a base, a guide sleeve, a spline shaft, an elastic piece, a driving assembly and a position sensing piece, the butt joint end of the spline shaft extends out of the guide sleeve and is used for being in butt joint with an internal spline product, the elastic piece is connected between the spline shaft and the guide sleeve, the driving assembly comprises a driving motor and a transmission assembly, an output shaft of the driving motor rotates to drive the guide sleeve to rotate through the transmission assembly, and the position sensing piece is used for detecting the position of the spline shaft relative to the guide sleeve. The butt joint device used for the internal spline product provided by the utility model can rapidly and efficiently assist the butt joint of the spline shaft and the internal spline product to be tested, the automation degree is high, the labor cost is reduced, and the butt joint process is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a docking device for internal spline products. Background Art

[0002] The new energy vehicle powertrain EOL test bench is mainly used for the off-line test of the powertrain for electric vehicles / hybrid electric vehicles, and can also provide a reliable test basis for the performance test research and assessment test of the motor system, meeting the requirements of the automated production test operation of products.

[0003] During the EOL test, the docking of the spline shaft and the internal spline gear of the powertrain to be tested is involved, so as to realize the transmission connection between the spline shaft and the powertrain to be tested. In the prior art, the docking between the internal spline gear and the spline shaft is completely manually realized, which consumes a large amount of manpower, has low efficiency, and there are uncertainties in the manual plugging and unplugging process due to factors such as the proficiency of the operator, affecting the docking quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a docking device for internal spline products, which can quickly and efficiently assist the docking of the spline shaft and the internal spline products to be tested, has a high degree of automation, reduces the labor cost, and the docking process is stable and reliable.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A docking device for internal spline products, comprising:

[0007] A base;

[0008] A guide sleeve, rotatably connected to the base;

[0009] A spline shaft, slidably inserted into the guide sleeve, and the docking end of the spline shaft extends out of the guide sleeve and is used for docking with the internal spline product;

[0010] An elastic member, connected between the spline shaft and the guide sleeve;

[0011] A driving assembly, including a driving motor and a transmission assembly, and the output shaft of the driving motor can drive the guide sleeve to rotate through the transmission assembly;

[0012] A position sensing member, used to detect the position of the spline shaft relative to the guide sleeve.

[0013] Preferably, the transmission assembly includes a driving pulley, a driven pulley and a transmission belt. The housing of the driving motor is relatively fixed to the base. The output shaft of the driving motor is fixedly sleeved with the driving pulley. The driven pulley is fixedly sleeved on the guide sleeve. The transmission belt is tensioned and sleeved on the driving pulley and the driven pulley.

[0014] Preferably, a protective cover is fixedly connected to the base, and the protective cover covers the driving pulley, the driven pulley and the transmission belt.

[0015] Preferably, the position sensing member is fixed to the base through a connecting plate.

[0016] Preferably, the spline shaft is arranged in a stepped shape. The docking end of the spline shaft is the large end of the spline shaft, and one end of the spline shaft facing away from the docking end of the spline shaft is the small end of the spline shaft. The large end and the small end of the spline shaft are connected by a stepped end face. A limiting abutting head is arranged on one side of the guide sleeve facing away from the docking end of the spline shaft. One end of the elastic member abuts against the stepped end face, and the other end abuts against the limiting abutting head.

[0017] Preferably, the elastic member is sleeved on the small end of the spline shaft.

[0018] Preferably, the elastic member is arranged as a spring.

[0019] Preferably, a sliding groove that slidably cooperates with the external spline of the spline shaft is provided on the inner peripheral wall of the guide sleeve.

[0020] Preferably, the housing of the driving motor is fixedly connected to the base through a fixing plate.

[0021] Preferably, a bearing is sleeved on the guide sleeve, and the guide sleeve is rotatably connected to the base through the bearing.

[0022] Beneficial effects:

[0023] The docking device for internal spline products provided by the present utility model, when performing the docking work of internal spline products, places the internal spline products to be docked on one side of the docking end of the spline shaft, so that the internal spline products and the spline shaft are in a coaxial position. Subsequently, the internal spline products gradually approach and finally contact the docking end of the spline shaft along the axial direction of the spline shaft. It can be understood that if the external spline on the docking end of the docking spline shaft and the keyway of the inner hole of the internal spline product are not directly opposite, the internal spline product cannot be inserted into the docking end of the spline shaft. As the internal spline product continues to approach, the internal spline product will push against the docking end of the spline shaft, causing the docking end of the spline shaft to retract relative to the guide sleeve, and the elastic member will generate elastic deformation. The other end opposite to the docking end of the spline shaft gradually extends out of the guide sleeve. When this end extends to a certain position, the position sensing member can detect the spline shaft, and then control the internal spline product to retreat to the initial position along the axial direction of the spline shaft. The internal spline product moves away from the spline shaft, releasing the abutment against the docking end of the spline shaft, and the elastic member drives the docking end of the spline shaft to extend and reset under the action of elastic force. The driving motor rotates, and drives the guide sleeve to rotate a certain angle through the rotating assembly to adjust the angle between the external spline on the docking end of the docking spline shaft and the keyway of the inner hole of the internal spline product. Subsequently, the internal spline product approaches the docking end of the spline shaft again, repeating the above actions until the external spline on the docking end of the spline shaft and the keyway of the inner hole of the internal spline product are in a directly opposite position, then the internal spline product can be successfully inserted into the docking end of the spline shaft to achieve successful docking.

[0024] The device has a simple structure, can quickly and efficiently assist the docking of the spline shaft and the measured internal spline product, has a high degree of automation, reduces labor costs, and the docking process is stable and reliable. Brief Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the docking device for internal spline products provided by the present utility model from one perspective;

[0026] Figure 2 is a schematic structural diagram of the docking device for internal spline products provided by the present utility model from another perspective.

[0027] In the figure:

[0028] 1. Base; 11. Protective cover; 12. Fixed plate; 13. Connecting plate;

[0029] 2. Guide sleeve; 21. Limiting abutting head; 22. Bearing;

[0030] 3. Spline shaft; 31. Step end face;

[0031] 4. Elastic member;

[0032] 5. Driving motor;

[0033] 61. Driving pulley; 62. Driven pulley; 63. Transmission belt;

[0034] 7. Position sensing member. Specific embodiments

[0035] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0036] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0038] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] This embodiment provides a docking device for internal spline products. Refer to Figures 1 to 2As shown in the figure, the docking device for internal spline products includes a base 1, a guide sleeve 2, a spline shaft 3, an elastic member 4, a drive assembly, and a position sensor 7. The guide sleeve 2 is rotatably connected to the base 1, the spline shaft 3 is slidably inserted into the guide sleeve 2, and the docking end of the spline shaft 3 extends out of the guide sleeve 2 and is used for docking with an internal spline product (not shown). The elastic member 4 is connected between the spline shaft 3 and the guide sleeve 2. The drive assembly includes a drive motor 5 and a transmission assembly. The output shaft of the drive motor 5 can drive the guide sleeve 2 to rotate through the transmission assembly. The position sensor 7 is used to detect the position of the spline shaft 3 relative to the guide sleeve 2.

[0040] In this embodiment, when using this docking device to perform the docking work of internal spline products, place the internal spline product to be docked on one side of the docking end of the spline shaft 3 so that the internal spline product and the spline shaft 3 are in a coaxial position. Subsequently, the internal spline product gradually approaches and finally contacts the docking end of the spline shaft 3 along the axial direction of the spline shaft 3. It can be understood that if the external spline on the docking end of the docking spline shaft 3 and the keyway of the inner hole of the internal spline product are not aligned, the internal spline product cannot be inserted into the docking end of the spline shaft 3. As the internal spline product continues to approach, the internal spline product will push against the docking end of the spline shaft 3, causing the docking end of the spline shaft 3 to retract relative to the guide sleeve 2, and the elastic member 4 will undergo elastic deformation. The other end opposite to the docking end of the spline shaft 3 gradually extends out of the guide sleeve 2. When this end extends to a certain position, the position sensor 7 can detect the spline shaft 3, and then control the internal spline product to retreat to the initial position along the axial direction of the spline shaft 3. The internal spline product moves away from the spline shaft 3, releasing the abutment against the docking end of the spline shaft 3. The elastic member 4 drives the docking end of the spline shaft 3 to extend and reset under the action of the elastic force. The drive motor 5 rotates, drives the guide sleeve 2 to rotate a certain angle through the rotating assembly, adjusts the angle between the external spline on the docking end of the docking spline shaft 3 and the keyway of the inner hole of the internal spline product, and then the internal spline product approaches the docking end of the spline shaft 3 again, repeating the above actions until the external spline on the docking end of the spline shaft 3 and the keyway of the inner hole of the internal spline product are in a facing position, then the internal spline product can be successfully inserted onto the docking end of the spline shaft 3 to achieve successful docking. This device has a simple structure, can quickly and efficiently assist in the docking of the spline shaft 3 and the measured internal spline product, has a high degree of automation, reduces labor costs, and the docking process is stable and reliable, improving the operation efficiency and reducing the turnover time of the test piece.

[0041] In this embodiment, the internal spline product can be an internal spline gear or other components with internal splines, which are not limited here.

[0042] In this embodiment, the position sensor 7 can be set as a proximity switch. A proximity switch is a switch-type sensor (i.e., a non-contact position switch), which works based on the principle of electromagnetic induction and can be operated without mechanical contact with the moving parts. When an object approaches the sensing surface of the proximity switch to the operating distance, the switch can be actuated without mechanical contact or applying any pressure, thereby driving an AC or DC electrical appliance or providing a control command to a computer device.

[0043] Specifically, the internal spline product is placed on a fixing mechanism, which includes a gripping member capable of grasping the internal spline product and a moving member capable of driving the gripping member to move along the axial direction of the spline shaft 3. When grasping the internal spline product, the internal spline product and the spline shaft 3 are in a coaxial position. Specifically, the proximity switch is communicatively connected to the moving member. When the other end opposite to the docking end of the spline shaft 3 extends relative to the guide sleeve 2 to a certain position, the proximity switch detects the spline shaft 3 and operates, so that the moving member can be correspondingly controlled to move away from the spline shaft 3 through a control member such as a controller.

[0044] Optionally, the gripping member can be set as a cylinder gripper.

[0045] Optionally, the moving member can be set as a telescopic cylinder or a linear servo module. In this embodiment, the transmission assembly includes a driving pulley 61, a driven pulley 62, and a transmission belt 63. The housing of the driving motor 5 is relatively fixed to the base 1. The output shaft of the driving motor 5 is fixedly sleeved with the driving pulley 61. The driven pulley 62 is fixedly sleeved on the guide sleeve 2. The transmission belt 63 is tensioned and sleeved on the driving pulley 61 and the driven pulley 62. Specifically, the rotation of the output shaft of the driving motor 5 drives the driving pulley 61 to rotate synchronously, so as to drive the driven pulley 62 to rotate through the transmission belt 63 and drive the guide sleeve 2 to rotate.

[0046] Optionally, the transmission assembly can also be set as a driving gear (not shown) and a driven gear (not shown). Specifically, the driving gear is fixedly sleeved on the output shaft of the driving motor 5, the driven gear is fixedly sleeved on the guide sleeve 2, and the driving gear and the driven gear are meshed and connected. The rotation of the output shaft of the driving motor 5 drives the driving gear to rotate, and the rotation of the driving gear drives the driven gear to rotate, thereby driving the guide sleeve 2 to rotate.

[0047] In this embodiment, a protective cover 11 is fixedly connected to the base 1, and the protective cover 11 covers the driving pulley 61, the driven pulley 62, and the transmission belt 63. By providing the protective cover 11, important transmission components such as the driving pulley 61, the driven pulley 62, and the transmission belt 63 can be protected.

[0048] In this embodiment, the housing of the driving motor 5 is fixedly connected to the base 1 through a fixing plate 12.

[0049] In this embodiment, the position sensor 7 is fixed to the base 1 through the connecting plate 13.

[0050] In this embodiment, the spline shaft 3 is arranged in a stepped shape. The docking end of the spline shaft 3 is the large end of the spline shaft 3, and one end of the spline shaft 3 facing away from the docking end of the spline shaft 3 is the small end of the spline shaft 3. The large end and the small end of the spline shaft 3 are connected by a stepped end face 31. A limiting abutting head 21 is arranged on one side of the guide sleeve 2 facing away from the docking end of the spline shaft 3. One end of the elastic member 4 abuts against the stepped end face 31, and the other end abuts against the limiting abutting head 21. Specifically, by arranging the spline shaft 3 in a stepped shape and cooperating with the limiting abutting head 21, on the one hand, it can prevent the spline shaft 3 from coming out of the guide sleeve 2; on the other hand, it is convenient to place the elastic member 4. Specifically, both ends of the elastic member 4 respectively abut against the stepped end face 31 and the limiting abutting head 21. The docking end of the spline shaft 3 retracts relative to the guide sleeve 2, so that the stepped end face 31 and the limiting abutting head gradually approach each other. During this process, the elastic member 4 is gradually compressed; when the internal spline releases the abutment against the docking end of the spline shaft 3, the elastic member 4 drives the docking end of the spline shaft 3 to extend and reset under the action of the elastic force, driving the stepped end face 31 and the limiting abutting head to gradually move away from each other.

[0051] In this embodiment, the elastic member 4 is sleeved on the small end of the spline shaft 3. With this setting, the spring is installed reliably and stably.

[0052] In this embodiment, the elastic member 4 is arranged as a spring.

[0053] Optionally, a chute (not shown) that slidably cooperates with the external spline of the spline shaft 3 is provided on the inner peripheral wall of the guide sleeve 2. The sliding cooperation between the external spline of the spline shaft 3 and the chute can ensure that the spline shaft 3 slides strictly relative to the guide sleeve 2 and prevent the spline shaft 3 from rotating axially relative to the guide sleeve 2.

[0054] In this embodiment, a bearing 22 is sleeved on the guide sleeve 2, and the guide sleeve 2 is rotatably connected to the base 1 through the bearing 22. Optionally, the number of bearings 22 can be set to multiple.

[0055] Optionally, the bearing 22 is selected as a roller bearing 22.

[0056] In summary, the docking device for internal spline products provided in this embodiment can assist the docking of the spline shaft 3 and the measured internal spline product quickly and efficiently, with a high degree of automation, reducing labor costs, and the docking process is stable and reliable.

[0057] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A docking device for internal spline products, characterized in that: include: Base (1); A guide sleeve (2) rotatably connected to the base (1); A spline shaft (3) is slidably inserted into the guide sleeve (2), and a butt end of the spline shaft (3) extends out of the guide sleeve (2) and is used to butt with an internal spline product; An elastic member (4) connected between the spline shaft (3) and the guide sleeve (2); A drive assembly, comprising a drive motor (5) and a transmission assembly, wherein the output shaft of the drive motor (5) rotates to drive the guide sleeve (2) to rotate via the transmission assembly; A position sensing component (7) is used to detect the position of the spline shaft (3) relative to the guide sleeve (2).

2. The docking device for internal spline products according to claim 1, characterized in that: The transmission assembly comprises a driving pulley (61), a driven pulley (62) and a transmission belt (63); the housing of the driving motor (5) is relatively fixed to the base (1); the output shaft of the driving motor (5) is fixedly sleeved on the driving pulley (61); the driven pulley (62) is fixedly sleeved on the guide sleeve (2); and the transmission belt (63) is tensionedly sleeved on the driving pulley (61) and the driven pulley (62).

3. The docking device for internal spline products according to claim 2, characterized in that: A protective cover (11) is fixedly connected to the base (1), and the protective cover (11) is arranged on the driving pulley (61), the driven pulley (62) and the transmission belt (63).

4. The docking device for internal spline products according to claim 1, characterized in that: The position sensing component (7) is fixed on the base (1) via a connecting plate (13).

5. The docking device for internal spline products according to claim 1, characterized in that: The spline shaft (3) is arranged in a stepped shape, the butt end of the spline shaft (3) is the large end of the spline shaft (3), the end of the spline shaft (3) facing away from the butt end of the spline shaft (3) is the small end of the spline shaft (3), the large end and the small end of the spline shaft (3) are connected via a stepped end surface (31), a limiting abutment joint (21) is provided on one side of the butt end of the guide sleeve (2) facing away from the spline shaft (3), one end of the elastic member (4) abuts against the stepped end surface (31), and the other end abuts against the limiting abutment joint (21).

6. The docking device for internal spline products according to claim 5, characterized in that: The elastic member (4) is sleeved on the small end of the spline shaft (3).

7. The docking device for internal spline products according to claim 1, characterized in that: The elastic member (4) is configured as a spring.

8. The docking device for internal spline products according to claim 1, characterized in that: The inner peripheral wall of the guide sleeve (2) is provided with a sliding groove which is slidably matched with the spline of the spline shaft (3).

9. The docking device for internal spline products according to claim 1, characterized in that: The housing of the driving motor (5) is fixedly connected to the base (1) via a fixing plate (12).

10. The docking device for internal spline products according to claim 1, characterized in that: A bearing (22) is sleeved on the guide sleeve (2), and the guide sleeve (2) is rotatably connected to the base (1) via the bearing (22).

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