Transmission spline housing and transmission connection structure

Abstract

The utility model discloses a transmission spline housing and a transmission connection structure, the transmission spline housing comprises a cylindrical housing body, one end of the housing body is coaxially provided with a shaft hole matched with the diameter of the shaft end of a gear to be measured, and the shaft hole is provided with a holding mechanism used for reducing the aperture. The minimum aperture of the shaft hole is smaller than the diameter of the shaft end of the gear to be measured; an outer spline protruding outwards is arranged on the outer circle face of the other end of the sleeve body. The transmission spline housing and the transmission connection structure have the advantages of being reasonable in structural design, convenient to operate and use, capable of being rapidly fixed to a gear shaft and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to a transmission spline sleeve and a transmission connection structure. Background Art

[0002] During the manufacturing process, the tooth surface of the gear pair is affected by factors such as processing and manufacturing, which introduces additional errors. This causes the gear pair to be excited by the meshing force during the meshing transmission process and generate additional vibration noise. In traditional fuel vehicles, the noise of the engine and other components will mask the noise between the gear pairs. However, in new energy electric vehicles, due to the low operating noise of the motor itself, the noise of the gear pair will be extremely obvious, seriously affecting the comfort of the entire vehicle. For this reason, it is necessary to perform noise detection on the gear pair at the off-line stage of gear pair manufacturing. During the detection, the gear shaft needs to be coaxially installed on the detection equipment. For the intermediate gear in the driven position, some gears do not have splines or straight teeth, such as Figure 1 As shown, the detection equipment cannot be aligned for driving or loading. Therefore, it is necessary to add an additional spline structure to the gear shaft to facilitate driving or loading it, but how to reliably install the spline structure on the gear to be tested has become an urgent problem to be solved. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a transmission spline sleeve and a transmission connection structure that has a reasonable structural design, is easy to operate and use, and can be quickly fixed on the gear shaft.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A transmission spline sleeve comprises a cylindrical sleeve body, one end of which is coaxially provided with an axial hole that matches the diameter of the shaft end of the gear to be measured, and a clamping mechanism for reducing the aperture is provided at the axial hole so that the minimum aperture of the axial hole is smaller than the diameter of the shaft end of the gear to be measured; the outer circumferential surface of the other end of the sleeve body is provided with an external spline protruding outward.

[0006] When in use, the shaft hole is sleeved on the shaft end of the gear to be measured. Since the diameters of the shaft hole and the shaft end of the gear to be measured match, the aperture of the shaft hole is reduced by the clamping mechanism, so that the shaft hole can be fixed on the shaft end of the gear to be measured, and the external spline on the sleeve can be used for connection to drive or load the gear to be measured.

[0007] Furthermore, the end of the sleeve body facing away from the external spline has a semicircular ring extending along the axial direction, and the clamping mechanism includes a semicircular embracing ring as a whole, the inner diameter of the embracing ring and the inner diameter of the semicircular ring are equal to the shaft end diameter of the gear to be measured, the embracing ring and the semicircular ring are spliced ​​radially opposite to each other to form the shaft hole, and there is a gap on the opposite side of the two; both ends of the embracing ring have bolt holes arranged through toward the semicircular ring, and the semicircular ring has threaded holes arranged corresponding to the bolt holes, and the embracing ring is connected to the threaded holes of the semicircular ring by bolts passing through the bolt holes.

[0008] In this way, since there is a gap between the holding ring and the semicircular ring, and the inner diameters of both are equal to the shaft end diameter of the gear to be tested, when force is applied to the bolt, the holding ring will continue to approach the semicircular ring, thereby tightly holding the shaft end of the gear to be tested.

[0009] As another optimization, the clamping mechanism includes an annular pressure chamber circumferentially extending through the sleeve at one end away from the external spline, and the side wall between the annular pressure chamber and the axial hole forms a deformable expansion sleeve wall; the sleeve has a cylindrical piston chamber and is equipped with a piston, and the piston chamber is connected to the annular pressure chamber through an oil channel and is filled with hydraulic oil; a thread is provided on the outer end side wall of the piston chamber and is equipped with a locking bolt, and the locking bolt abuts against the piston.

[0010] In this way, by tightening the locking bolt inward, the hydraulic oil can be pushed into the annular pressure chamber. As the hydraulic pressure increases, the wall of the expansion sleeve deforms inward, thereby reducing the inner diameter of the shaft hole, so that the sleeve can be quickly fixed on the shaft end of the gear to be tested.

[0011] A transmission connection structure includes the transmission spline sleeve and the top mechanism as described above, the top mechanism includes a top body that is generally cylindrical, one end of the top body has a coaxially arranged top column and a transmission sleeve, the top column has a conical top connection part, the minimum diameter of the top connection part is smaller than the inner hole diameter of the gear to be measured, and the maximum diameter is larger than the inner hole diameter of the gear to be measured; one end of the transmission sleeve is connected to the top body, and the other end has an internal spline that cooperates with the external spline; the distance from the position on the top connection part that is consistent with the inner hole diameter of the gear to be measured to the outer end of the sleeve is less than the length of the end shaft section of the gear to be measured.

[0012] In this way, the transmission spline sleeve is fixed on the shaft end of the gear to be tested, and the external splines on the sleeve body are matched with the internal splines on the transmission sleeve. At this time, the inner hole of the gear to be tested is matched with the top connection part, thereby forming a coaxial transmission connection structure.

[0013] Furthermore, the end of the top body has threaded holes evenly distributed along the circumference of the top column; the transmission sleeve has an annular end plate at one end facing the top body, and the annular end plate has bolt holes corresponding to the threaded holes; the transmission sleeve is connected to the threaded holes of the top body by bolts passing through the bolt holes.

[0014] Furthermore, the outer end of the inner spline has an inner guide portion with a gradually increasing diameter; the outer end of the outer spline has an outer guide portion with a gradually decreasing diameter.

[0015] In this way, the outer spline can be more easily matched with the inner spline through the inner guide portion and the outer guide portion.

[0016] Furthermore, the top connection portion is provided with a coaxially arranged guide rod, the end of the guide rod is provided with a guide block protruding in the radial direction, and the diameter of the guide block is consistent with the inner hole diameter of the gear to be measured.

[0017] In this way, the guide block can cooperate with the inner hole of the gear to be measured, so that the gear to be measured can be better aligned.

[0018] Furthermore, the diameter of the end portion of the guide block gradually decreases to be in a truncated cone shape.

[0019] In summary, the transmission spline sleeve and the transmission connection structure of the present invention have the advantages of reasonable structural design, easy operation and use, and the ability to be quickly fixed on the gear shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the gear structure to be tested.

[0021] Figure 2 It is a structural diagram of the transmission spline sleeve.

[0022] Figure 3 It is a schematic diagram of the decomposed structure of the transmission connection structure.

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the transmission connection structure.

[0024] Figure 5 This is a schematic cross-sectional structure diagram of the transmission spline sleeve of Example 2. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the embodiments.

[0026] Example 1: Figures 2 to 4As shown, a transmission connection structure includes a transmission spline sleeve and a top mechanism 5. The transmission spline sleeve includes a cylindrical sleeve body 1, one end of which is coaxially provided with an axial hole 2 that matches the diameter of the shaft end of the gear to be measured. The axial hole 2 is provided with a clamping mechanism 3 for reducing the aperture, so that the minimum aperture of the axial hole 2 is smaller than the diameter of the shaft end of the gear to be measured; the outer circumferential surface of the other end of the sleeve body 1 is provided with an external spline 4 protruding outward. In this embodiment, as Figure 2 As shown, the end of the sleeve 1 facing away from the external spline 4 has a semicircular ring 11 extending axially. The clamping mechanism 3 includes an overall semicircular ring. The inner diameter of the ring and the inner diameter of the semicircular ring 11 are both equal to the diameter of the shaft end of the gear to be tested. The ring and the semicircular ring 11 are spliced ​​together radially opposite each other to form the shaft hole 2, and there is a gap between the two opposing sides. The ring has bolt holes extending through toward the semicircular ring 11 at both ends. The semicircular ring 11 has threaded holes corresponding to the bolt holes. The ring is connected to the threaded holes of the semicircular ring 11 via bolts passing through the bolt holes. Because there is a gap between the ring and the semicircular ring, and the inner diameters of both are equal to the diameter of the shaft end of the gear to be tested, when force is applied to the bolt, the ring will continuously approach the semicircular ring, thereby clamping the shaft end of the gear to be tested.

[0027] The tip mechanism 5 includes a cylindrical tip body 51. One end of the tip body 51 has a coaxially arranged top post 52 and a transmission sleeve 53. The top post 52 has a conical top connection portion 54, the minimum diameter of which is smaller than the inner diameter of the gear to be measured and the maximum diameter is larger than the inner diameter of the gear to be measured. One end of the transmission sleeve 53 is connected to the tip body 51, and the other end has an internal spline that mates with the external spline 4. The distance from the position on the top connection portion 54 that coincides with the inner diameter of the gear to be measured to the outer end of the sleeve 1 is less than the end shaft length of the gear to be measured. The outer end of the internal spline has an inner guide portion with a gradually increasing diameter; the outer end of the external spline 4 has an outer guide portion with a gradually decreasing diameter.

[0028] like Figure 3 As shown, the end of the top body 51 has threaded holes uniformly distributed along the circumference of the top column 52; the transmission sleeve 53 has an annular end plate at one end facing the top body 51, and the annular end plate has bolt holes corresponding to the threaded holes; the transmission sleeve 53 is connected to the threaded holes of the top body 51 by bolts passing through the bolt holes.

[0029] like Figure 4As shown, the top connection portion 54 has a coaxially mounted guide rod. The end of the guide rod has a radially protruding guide block. The diameter of the guide block matches the inner diameter of the gear to be tested. The end of the guide block tapers to a truncated cone shape. This allows the guide block to mate with the inner bore of the gear to be tested, thereby ensuring better alignment of the gear to be tested.

[0030] Example 2: The difference from Example 1 is that the transmission spline sleeve, in this embodiment, Figure 5 As shown, the clamping mechanism 3 includes an annular pressure chamber 31 circumferentially extending through the sleeve 1 at one end away from the external spline 4, and the side wall between the annular pressure chamber 31 and the axial hole 2 forms a deformable expansion sleeve wall 32; the sleeve 1 has a cylindrical piston chamber 33 and is equipped with a piston 34, and the piston chamber 33 is connected to the annular pressure chamber 31 through an oil channel and is filled with hydraulic oil; a thread is provided on the outer end side wall of the piston chamber 33 and is equipped with a locking bolt 35, and the locking bolt 35 abuts against the piston 34.

[0031] In this way, by tightening the locking bolt inward, the hydraulic oil can be pushed into the annular pressure chamber. As the hydraulic pressure increases, the wall of the expansion sleeve deforms inward, thereby reducing the inner diameter of the shaft hole, so that the sleeve can be quickly fixed on the shaft end of the gear to be tested.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A transmission spline sleeve, characterized in that: The invention comprises a cylindrical sleeve (1), one end of the sleeve (1) is coaxially provided with an axial hole (2) that matches the diameter of the shaft end of the gear to be measured, and the axial hole (2) is provided with a clamping mechanism (3) for reducing the hole diameter so that the minimum hole diameter of the axial hole (2) is smaller than the diameter of the shaft end of the gear to be measured; and the outer circumferential surface of the other end of the sleeve (1) is provided with an external spline (4) protruding outward.

2. The transmission spline sleeve according to claim 1, characterized in that: The sleeve (1) has a semicircular ring (11) extending in the axial direction at one end away from the external spline (4), and the clamping mechanism (3) includes a semicircular holding ring. The inner diameter of the holding ring and the inner diameter of the semicircular ring (11) are both equal to the diameter of the shaft end of the gear to be measured. The holding ring and the semicircular ring (11) are spliced ​​together in a radially opposite manner to form the shaft hole (2), and there is a gap on the opposite sides of the two. Both ends of the holding ring have bolt holes arranged through the semicircular ring (11), and the semicircular ring (11) has threaded holes arranged corresponding to the bolt holes. The holding ring is connected to the threaded holes of the semicircular ring (11) by bolts passing through the bolt holes.

3. The transmission spline sleeve according to claim 1, characterized in that: The clamping mechanism (3) includes an annular pressure chamber (31) circumferentially extending through the sleeve (1) at one end facing away from the external spline (4), and the side wall between the annular pressure chamber (31) and the shaft hole (2) forms a deformable expansion sleeve wall (32); the sleeve (1) has a cylindrical piston chamber (33) and is equipped with a piston (34); the piston chamber (33) is connected to the annular pressure chamber (31) through an oil channel and is filled with hydraulic oil; the outer end side wall of the piston chamber (33) is provided with a thread and is equipped with a locking bolt (35), and the locking bolt (35) abuts against the piston (34).

4. A transmission connection structure, characterized in that: It comprises a transmission spline sleeve and a top mechanism (5) as claimed in any one of claims 1 to 3, wherein the top mechanism (5) comprises a top body (51) which is cylindrical as a whole, one end of the top body (51) has a coaxially arranged top column (52) and a transmission sleeve (53), the top column (52) has a conical top connection portion (54), the minimum diameter of the top connection portion (54) is smaller than the inner hole diameter of the gear to be measured, and the maximum diameter is larger than the inner hole diameter of the gear to be measured; one end of the transmission sleeve (53) is connected to the top body (51), and the other end has an internal spline that cooperates with the external spline (4); the distance from the position on the top connection portion (54) that is consistent with the inner hole diameter of the gear to be measured to the outer end of the sleeve body (1) is smaller than the end shaft section length of the gear to be measured.

5. The transmission connection structure according to claim 4, characterized in that: The end of the top body (51) has threaded holes uniformly distributed along the circumference of the top column (52); the end of the transmission sleeve (53) facing the top body (51) has an annular end plate, and the annular end plate has bolt holes corresponding to the threaded holes; the transmission sleeve (53) is connected to the threaded holes of the top body (51) by bolts passing through the bolt holes.

6. The transmission connection structure according to claim 4, characterized in that: The outer end of the inner spline has an inner guide portion with a gradually increasing diameter; the outer end of the outer spline (4) has an outer guide portion with a gradually decreasing diameter.

7. The transmission connection structure according to claim 4, characterized in that: The top connection portion (54) has a coaxially arranged guide rod, the end of the guide rod has a guide block formed to protrude in the radial direction, and the diameter of the guide block is consistent with the inner hole diameter of the gear to be measured.

8. The transmission connection structure according to claim 7, characterized in that: The diameter of the end portion of the guide block gradually decreases and becomes a truncated cone.

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