Anti-toppling jacking and clamping mechanism and gear clamping structure

Abstract

The utility model discloses an anti-toppling jacking and clamping mechanism and a gear clamping structure, the anti-toppling jacking and clamping mechanism comprises a cylindrical body, one end of the body is provided with a centering rod which is coaxially arranged, the other end of the body is provided with a tip which is coaxially arranged, the tip comprises a positioning column which is connected to the body, and the positioning column is connected to the body. The end part of the positioning column is provided with a conical tip, and the maximum diameter of the conical tip is larger than the diameter of an inner hole of a gear to be measured. The positioning column is matched with an anti-inclination sleeve, one outward end of the anti-inclination sleeve is provided with an anti-inclination hole matched with the diameter of the end part of a gear to be detected, and the anti-inclination hole extends inwards to the positioning column; the distance from the position, consistent with the diameter of an inner hole of the gear to be measured, of the conical tip to the outer end of the anti-inclination sleeve is smaller than the length of an end shaft section of the gear to be measured. According to the utility model, the anti-inclination top clamping mechanism and the gear clamping structure have the advantages of simple structure, capability of concentrically placing the gear to be measured, convenience in centering and clamping, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of gear detection, in particular to an anti-tilt clamping mechanism and a gear clamping 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, causing the gear pair to be excited by the meshing force during the meshing transmission process and produce additional vibration noise. In traditional fuel vehicles, the noise of the engine and other components will mask the noise between the gear pairs, while in new energy electric vehicles, due to the low operating noise of the motor itself, the noise of the gear pair will be abnormally 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. The two gears of the gear pair need to be clamped on the detection equipment at the same time, one of the gears needs to be driven, and a load is applied to the other gear. Since the driving mechanism and the load mechanism are large in size, in order to reduce the interference between the two, the driving mechanism and the load mechanism need to be at both ends of the gear pair respectively. In this way, the top of one of the gears must be at the lower end, such as Figure 1 As shown, the gear under test has a coaxial inner hole running through it, with an internal spline at one end. The upper end of the gear under test is connected to the drive mechanism via the internal spline, while the lower end rests on a centering pin through the inner hole. Because the centering pin has a tapered shape, the gear under test, placed on the centering pin, can tip over, making it difficult to center the drive mechanism at the upper end. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is: how to provide an anti-tilt clamping mechanism and a gear clamping structure with a simple structure, which can concentrically place the gear to be tested and facilitate centering and clamping.

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

[0005] An anti-tilt clamping mechanism comprises a body that is generally cylindrical, one end of the body having a coaxially arranged centering rod, and the other end having a coaxially arranged tip, the tip comprising a positioning column connected to the body, the end of the positioning column being provided with a conical cone tip, the maximum diameter of the cone tip being larger than the inner hole diameter of the gear to be measured; an anti-tilt sleeve is fitted on the positioning column, the outward end of the anti-tilt sleeve having an anti-tilt hole matching the end diameter of the gear to be measured, the anti-tilt hole extending inwardly to the positioning column; the distance from the position on the cone tip that is consistent with the inner hole diameter of the gear to be measured to the outer end of the anti-tilt sleeve is smaller than the length of the end shaft section of the gear to be measured.

[0006] In the above structure, the anti-tilt sleeve fits over the positioning post, and the anti-tilt hole at the end extends to the positioning post, allowing the cone tip to be completely within the anti-tilt hole. Furthermore, the distance from the point on the cone tip that aligns with the hole diameter to the outer end of the anti-tilt sleeve is less than the length of the end shaft section of the gear to be tested. This ensures that when the gear to be tested mates with the cone tip, the end of the anti-tilt sleeve does not interfere with the protrusion on the gear, and the inner hole of the gear to be tested reliably abuts against the cone tip. Furthermore, because the outer diameter of the anti-tilt hole matches the end diameter of the gear to be tested, the gear can be kept upright and prevented from tipping, facilitating quick alignment.

[0007] Furthermore, the diameter of the centering rod gradually decreases in a direction away from the main body.

[0008] In this way, the taper on the centering rod and the taper sleeve seat can be used to achieve coaxial installation.

[0009] Furthermore, the end of the anti-tilt hole has a guide portion with a gradually increasing diameter.

[0010] This will allow the gear end to fit better into the anti-tilt hole.

[0011] Furthermore, the positioning post is provided with an external thread, and the anti-tilt sleeve has a threaded hole extending therethrough at one end facing the main body and is screwed onto the positioning post.

[0012] Furthermore, the anti-tilt sleeve has a positioning hole extending therethrough at one end thereof facing the main body, the inner diameter of the positioning hole matches the outer diameter of the positioning post, and the anti-tilt sleeve is sleeved on the positioning post.

[0013] A gear clamping structure includes a tapered sleeve seat arranged vertically upward, and the tapered sleeve seat is provided with the anti-tilt clamping mechanism as described above; the upper end of the tapered sleeve seat has a vertically arranged centering hole, and the centering rod is coaxially fitted on the centering hole; the upper end of the tapered sleeve seat has a coaxially arranged driving mechanism, and the output shaft of the driving mechanism is provided with a spline head for matching the splines inside the gear to be tested.

[0014] Furthermore, a drive shaft is connected to the output shaft of the drive mechanism, and the drive shaft has a spline shaft at one end facing the tapered sleeve; a spline hole matching the spline shaft is coaxially arranged on the spline head, and the spline head is detachably engaged with the spline shaft through the spline hole.

[0015] In this way, the spline head can be replaced according to the models of the splines in the gear to be tested, so that more models of gears can be adapted for testing.

[0016] Furthermore, the spline hole is provided through the spline head, and an outward end of the spline hole has a retaining spring groove extending in the circumferential direction and is matched with a retaining spring ring.

[0017] Furthermore, the drive shaft has a top connection section with a gradually decreasing diameter at one end facing the spline shaft, wherein the maximum diameter of the top connection section is larger than the inner hole diameter of the gear to be measured, and the minimum diameter is smaller than the inner hole diameter of the gear to be measured.

[0018] In this way, the top connection section and the cone head can be used to cooperate to apply clamping force to the gear to be measured from both axial ends, and the outer cone surfaces of the two can be used to achieve the centering of the gear to be measured.

[0019] The diameter of the outward end of the spline head gradually decreases to form a truncated cone shape, so that the spline head can be easily matched with the internal spline of the gear to be tested.

[0020] In summary, the anti-tilt clamping mechanism and the gear clamping structure of the present invention have the advantages of simple structure, the ability to concentrically place the gear to be tested, and convenient centering and clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the cross-sectional structure of the gear to be tested.

[0022] Figure 2 Schematic diagram of the overall structure of the gear clamping structure.

[0023] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure.

[0024] Figure 4 Schematic diagram of the exploded structure of the telescopic spline centering mechanism.

[0025] Figure 5 Schematic diagram of the drive shaft structure.

[0026] Figure 6 It is a structural diagram of the anti-tilt clamping mechanism. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the embodiments.

[0028] When implementing: Figures 2 to 6 As shown, a gear clamping structure includes a tapered sleeve seat 5 arranged vertically upward, and an anti-tilt clamping mechanism is provided on the tapered sleeve seat 5; Figure 3 and Figure 6As shown, the anti-tilt clamping mechanism comprises a generally cylindrical body 1, with a coaxially arranged centering rod 2 at one end and a coaxially arranged tip 3 at the other end. The tip 3 comprises a positioning post 31 connected to the body 1, with a conical tip 32 at its end. The maximum diameter of the tip 32 is larger than the inner diameter of the gear to be tested. The positioning post 31 is fitted with an anti-tilt sleeve 4, whose outward end has an anti-tilt hole 41 matching the diameter of the gear to be tested. The hole 41 extends inwardly to the positioning post 31. The distance from the point on the tip 32 that matches the inner diameter of the gear to be tested to the outer end of the anti-tilt sleeve 4 is less than the length of the gear end shaft section. The diameter of the centering rod 2 gradually decreases as it moves away from the body 1. The upper end of the tapered sleeve 5 has a vertically arranged centering hole with a taper consistent with that of the centering rod 2, and the centering rod 2 fits tightly and coaxially within the centering hole. In this embodiment, the anti-tilt sleeve 4 has a through-hole on the end facing the body 1. The inner diameter of the hole matches the outer diameter of the positioning post 31, and the sleeve is fitted over the positioning post 31. The end of the anti-tilt hole 41 has a guide portion with a gradually increasing diameter. In a specific implementation, a threaded connection structure can be employed between the anti-tilt sleeve 4 and the positioning post 31. For example, the positioning post 31 has external threads, and the end of the anti-tilt sleeve 4 facing the body 1 has a through-hole, which is screwed onto the positioning post 31.

[0029] The upper end of the tapered sleeve 5 is provided with a coaxially opposite driving mechanism 6, and the output end of the driving mechanism 6 is provided with a telescopic spline centering mechanism, and the telescopic spline centering mechanism includes a coaxially connected driving shaft 62 and a centering shaft 63, and the centering shaft 63 has a coaxially arranged spring cavity 631 at one end facing the driving shaft 62, and a transmission hole is coaxially arranged at the bottom of the spring cavity 631, and the transmission hole has a guide structure arranged axially; a transmission shaft 64 is axially movably fitted on the transmission hole, and a spring 65 is abutted between the inner end of the transmission shaft 64 and the driving shaft 62; the outer end of the transmission shaft 64 is provided with a spline head 61 for matching the internal spline of the gear to be measured.

[0030] In this embodiment, the guide mechanism is a spline provided on the transmission hole, and the transmission shaft 64 has an external spline that matches the spline. The external spline extends axially through the transmission shaft 64 at both ends. The inner end of the transmission shaft 64 has an external retaining spring groove extending circumferentially, and the external retaining spring groove is fitted with an external retaining spring baffle. The spline head 61 is coaxially provided with a spline hole that matches the external spline. The spline head 61 removably engages the external spline of the transmission shaft 64 through the spline hole. This allows the spline head to be replaced according to the model of the internal spline of the gear to be tested, thereby adapting to a wider range of gear models for testing.

[0031] The spline hole extends through the spline head 61. The outward-facing end of the spline hole has an internal retaining ring groove extending circumferentially and fitted with an internal retaining ring. Furthermore, the outward-facing end of the spline head 61 tapers in diameter to form a frustum. This allows the frustum-shaped end of the spline head to better mate with the internal splines of the gear being tested.

[0032] The end of the centering shaft 63 facing the spline head 61 has a tapered connecting section with a gradually decreasing diameter. The maximum diameter of the connecting section is larger than the inner bore diameter of the gear to be tested, while the minimum diameter is smaller. This allows the tapered connecting section to mate with the inner bore of the gear to be tested to achieve a coaxial connection.

[0033] like Figure 4 and Figure 5 As shown, the end of the drive shaft 62 has a coaxially arranged centering tapered hole 621, the diameter of which gradually increases from the inside to the outside; the end of the centering shaft 63 has a centering sleeve 632 protruding from one end facing the drive shaft 62, the outer diameter of the centering sleeve 632 gradually decreasing in the direction toward the drive shaft 62, and the taper is consistent with the taper of the centering tapered hole 621; a locking mechanism is provided between the drive shaft 62 and the centering shaft 63, so that the centering sleeve 632 is tightly and concentrically fitted in the centering tapered hole 621. The end of the centering sleeve 632 has a radially extending positioning groove 633; ​​the centering tapered hole 621 has a positioning block 622 protruding radially inward, the width of the positioning block 622 matches the width of the positioning groove 633, and fits in the positioning groove 633.

[0034] In this embodiment, the end of the driving shaft 62 has threaded holes evenly distributed along the circumference of the centering cone hole 621; the centering shaft 63 has a flange 634 protruding radially outward along the centering sleeve 632, and the flange 634 has bolt holes corresponding to the threaded holes, and the locking mechanism is a bolt passing through the bolt hole and connected to the threaded hole.

[0035] With this embodiment of the gear clamping structure, the anti-tilt sleeve fits over the positioning post, and the anti-tilt hole at the end extends to the positioning post, allowing the cone tip to be completely within the anti-tilt hole. Furthermore, the distance from the point on the cone tip that aligns with the hole diameter to the outer end of the anti-tilt sleeve is less than the length of the end shaft section of the gear to be tested. This ensures that when the gear to be tested mates with the cone tip, the end of the anti-tilt sleeve does not interfere with the protrusion on the gear, and the inner hole of the gear to be tested reliably abuts against the cone tip. Furthermore, because the outer diameter of the anti-tilt hole matches the end diameter of the gear to be tested, the gear can be kept upright and prevented from tipping, facilitating quick alignment.

[0036] In addition, when aligning the telescopic spline centering mechanism, the spline head is slowly rotated by the drive mechanism. When the spline head contacts the internal spline of the gear, the drive shaft compresses the spring inward to prevent impact between the spline head and the internal spline. As the spline head rotates to a position that mates with the internal spline, the spring pushes the drive shaft and the internal spline out, completing the engagement of the spline head and the internal spline. This structure avoids impact between the spline head and the internal spline, preventing damage to equipment or parts while also improving spline engagement efficiency.

[0037] 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. An anti-tilt clamping mechanism, comprising a cylindrical body (1), one end of the body (1) having a coaxially arranged centering rod (2), and the other end having a coaxially arranged top (3), characterized in that: The tip (3) includes a positioning column (31) connected to the body (1), the end of the positioning column (31) is provided with a conical cone tip (32), the maximum diameter of the cone tip (32) is larger than the inner hole diameter of the gear to be measured; the positioning column (31) is matched with an anti-tilt sleeve (4), the outward end of the anti-tilt sleeve (4) has an anti-tilt hole (41) matching the end diameter of the gear to be measured, and the anti-tilt hole (41) extends inwardly to the positioning column (31); the distance from the position on the cone tip (32) that is consistent with the inner hole diameter of the gear to be measured to the outer end of the anti-tilt sleeve (4) is smaller than the end shaft length of the gear to be measured.

2. The anti-tilt clamping mechanism according to claim 1, wherein: The diameter of the centering rod (2) gradually decreases in a direction away from the body (1).

3. The anti-tilt clamping mechanism according to claim 1, wherein: The end of the anti-tilt hole (41) has a guide portion with a gradually increasing diameter.

4. The anti-tilt clamping mechanism according to claim 1, wherein: The positioning column (31) has an external thread, and the anti-tilt sleeve (4) has a threaded hole extending through one end facing the body (1) and is screwed onto the positioning column (31).

5. The anti-tilt clamping mechanism according to claim 1, wherein: The anti-tilt sleeve (4) has a positioning hole extending through one end thereof facing the main body (1). The inner diameter of the positioning hole matches the outer diameter of the positioning column (31), and the positioning hole is sleeved on the positioning column (31).

6. A gear clamping structure, characterized in that: The invention comprises a tapered sleeve seat (5) arranged vertically upward, wherein the tapered sleeve seat (5) is provided with an anti-tilt clamping mechanism as claimed in any one of claims 1 to 5; the upper end of the tapered sleeve seat (5) has a vertically arranged centering hole, and the centering rod (2) is coaxially fitted on the centering hole; the upper end of the tapered sleeve seat (5) has a coaxially opposite driving mechanism (6), and the output shaft of the driving mechanism (6) is provided with a spline head (61) for fitting with the spline inside the gear to be tested.

7. The gear clamping structure according to claim 6, characterized in that: The output shaft of the driving mechanism (6) is connected to a driving shaft (62), and one end of the driving shaft (62) facing the tapered sleeve (5) has a spline shaft (63); a spline hole matching the spline shaft (63) is coaxially provided on the spline head (61), and the spline head (61) is detachably fitted on the spline shaft (63) through the spline hole.

8. The gear clamping structure according to claim 7, characterized in that: The spline hole is provided through the spline head (61), and one end of the spline hole facing outward is provided with a retaining spring groove extending in the circumferential direction and is matched with a retaining spring ring.

9. The gear clamping structure according to claim 7, wherein: One end of the drive shaft (62) facing the spline shaft (63) has a top connecting section (64) with a gradually decreasing diameter, wherein the maximum diameter of the top connecting section (64) is larger than the inner hole diameter of the gear to be measured, and the minimum diameter is smaller than the inner hole diameter of the gear to be measured.

10. The gear clamping structure according to claim 6, wherein: The diameter of the outward end of the spline head (61) gradually decreases to form a truncated cone.

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