An axial locking mechanism

Abstract

The present invention discloses an axial locking mechanism, comprising a transversely distributed main shaft (1); a clamping sleeve (4) is respectively sleeved on the left and right ends of the central main body (10) of the main shaft (1); a sliding seat (3) is sleeved on the outside of the two clamping sleeves (4); the left and right sides of the sliding seat (3) are respectively connected to a sealing cover (2); each sealing cover (2) is sleeved on the outside of the central main body (10) of the main shaft (1). The outer side of each sealing cover (2) has an annularly distributed dust ring receiving groove; an annular dust ring (5) is embedded in the dust ring receiving groove; the dust ring (5) is sleeved on the outer surface of the central main body (10) of the main shaft (1). The axial locking mechanism disclosed by the present invention has a scientific structural design, can reliably lock the shaft on the gear selection and shifting test bench, meets the use requirements of the test bench, and has great production practical significance.

Description

Technical Field

[0001] The present invention relates to the field of mechanical technology, and in particular to an axial locking mechanism. Background Art

[0002] At present, the AMT gearbox (i.e. electronically controlled mechanical automatic transmission) is improved on the basis of the traditional manual gear transmission. It is an electromechanical and hydraulic integrated automatic transmission that combines the advantages of both AT (automatic) and MT (manual). The AMT gearbox has the advantages of automatic shifting of the hydraulic automatic transmission, and retains the advantages of the original manual transmission gear transmission of high efficiency, low cost, simple structure and easy manufacturing.

[0003] With the development of the pure electric vehicle industry, it is necessary to test the performance and durability of the AMT transmission's shift mechanism. To this end, the applicant has developed and designed a shift test bench that can be used to test the performance of the AMT transmission's shift mechanism.

[0004] However, when installing the metal shaft on the shift test bench, an axial locking mechanism is required to ensure the stability of the machine during operation. Most of the current axial locking mechanisms have complex structures and cannot reliably lock the shaft, which cannot meet the use requirements of the test bench. Summary of the Invention

[0005] The purpose of the present invention is to provide an axial locking mechanism to address the technical defects of the prior art.

[0006] To this end, the present invention provides an axial locking mechanism comprising a transversely distributed main shaft;

[0007] The left and right ends of the main body of the main shaft are respectively covered with a clamping sleeve;

[0008] The outside of the two clamping sleeves is covered with a sliding seat;

[0009] The left and right sides of the slide are respectively connected to a sealing gland;

[0010] Each sealing gland is sleeved on the outside of the middle main body portion of the main shaft.

[0011] The outer side of each sealing gland is provided with an annular dust ring receiving groove;

[0012] An annular dust ring is embedded in the dust ring receiving groove;

[0013] The dust ring is sleeved on the outer surface of the middle main body of the main shaft;

[0014] The four corners of each sealing gland are fixedly connected to the slide seat via a hexagon socket screw.

[0015] An elastic washer is provided between the head of the hexagon socket screw and the sealing gland.

[0016] There is an interference fit between the clamping sleeve and the middle main body of the main shaft.

[0017] Among them, the dust ring and the middle main body part of the main shaft are interference fit.

[0018] The inner side of the sliding seat is provided with a clamping sleeve accommodating cavity for accommodating the clamping sleeve.

[0019] Among them, the outer sides of the left and right ends of the slide seat are provided with annularly distributed sealing gland embedding grooves;

[0020] The sealing cover has an annular protrusion on the side facing the slide seat;

[0021] The annular protrusion is correspondingly embedded in the sealing gland embedding groove on the sliding seat.

[0022] Among them, a pair of hydraulic oil inlet and outlet holes are respectively opened at the left and right ends of the front side of the slide;

[0023] Each pair of oil inlet and outlet holes includes an oil inlet hole and an oil outlet hole;

[0024] Each pair of oil inlet and outlet holes is respectively connected to a cavity where the outer wall of the clamping sleeve is located, and is used for conveying hydraulic oil to the clamping sleeve.

[0025] Wherein, the upper and lower ends of the slide seat are respectively provided with a positioning connecting pipe;

[0026] The positioning connecting pipe is used to connect the shift finger in the external gear selection mechanism.

[0027] It can be seen from the technical solution provided by the present invention above that, compared with the prior art, the present invention provides an axial locking mechanism with a scientific structural design, which can reliably lock the shaft on the gear selection and shifting test bench, meet the use requirements of the test bench, and has important production practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A front view of an axial locking mechanism provided by the present invention;

[0029] Figure 2 To follow Figure 1 The cross-sectional view of line AA is shown;

[0030] Figure 3 This is an enlarged side view of an axial locking mechanism provided by the present invention. DETAILED DESCRIPTION

[0031] To facilitate understanding of the technical means implemented by the present invention, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended solely to illustrate the relevant application and are not intended to limit the application. It should also be noted that, for ease of description, only portions relevant to the present application are shown in the accompanying drawings.

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that, in the description of this application, terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on this application.

[0034] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the term "installation" should be understood in a broad sense. For example, it can be a fixed installation or a detachable installation.

[0035] For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] See also Figures 1 to 3 , the present invention provides an axial locking mechanism, comprising a transversely distributed main shaft 1;

[0037] A clamping sleeve 4 is respectively sleeved on the left and right ends of the central main body 10 of the main shaft 1;

[0038] The outside of the two clamping sleeves 4 is covered with a slide 3;

[0039] The left and right sides of the slide 3 are respectively connected to a sealing gland 2;

[0040] Each sealing gland 2 is sleeved on the outside of the middle main body portion 10 of the main shaft 1 .

[0041] The outer side of each sealing gland 2 is provided with an annularly distributed dust ring receiving groove;

[0042] An annular dust ring 5 is embedded in the dust ring receiving groove;

[0043] The dust ring 5 is sleeved on the outer surface of the middle main body part 10 of the main shaft 1.

[0044] In the present invention, in a specific implementation, the clamping sleeve 4 and the middle main body part 10 of the main shaft 1 are interference fit, thereby relying on the interference value between the middle main body part 1 of the main shaft 1 and the sleeve hole of the clamping sleeve 4, elastic pressure is generated between the surfaces of the parts after assembly, thereby obtaining a tight connection.

[0045] In the present invention, in a specific implementation, the dust ring 5 and the middle main body part 10 of the main shaft 1 are interference fit, thereby ensuring the dustproof effect.

[0046] In the present invention, in a specific implementation, a clamping sleeve accommodating cavity is provided on the inner side around the sliding seat 3 for accommodating the clamping sleeve 4 .

[0047] In the present invention, in a specific implementation, the outer sides of the left and right ends of the slide 3 are provided with annularly distributed sealing gland embedding grooves;

[0048] The sealing cover 2 has an annular protrusion on the side facing the slide 3;

[0049] The annular protrusion is correspondingly embedded in the sealing gland embedding groove on the sliding seat 3 .

[0050] In the present invention, in a specific implementation, the four corners of each sealing gland 2 are fixedly connected to the slide 3 by a hexagon socket screw 6;

[0051] An elastic washer 7 is provided between the head of the hexagon socket screw 6 and the sealing cover 2 .

[0052] In the present invention, in a specific implementation, the sliding seat 3 has a rectangular shape.

[0053] In the present invention, in a specific implementation, a pair of hydraulic oil inlet and outlet holes 11 are respectively opened at the left and right ends of the front side of the slide 3;

[0054] Each pair of oil inlet and outlet holes 11 includes an oil inlet hole and an oil outlet hole;

[0055] It should be noted that, for each pair of oil inlet and outlet holes 11, the oil inlet hole is connected to the oil outlet of the existing external hydraulic system (which has a hydraulic pump) (for example, the oil outlet of the hydraulic pump), and the oil outlet hole is connected to the existing external oil tank.

[0056] Each pair of oil inlet and outlet holes 11 is respectively connected to a cavity (which can be used as an oil storage cavity) located on the outer wall of the clamping sleeve 4, and is used to transport hydraulic oil to the clamping sleeve 4.

[0057] In the present invention, in a specific implementation, the upper and lower ends of the slide 3 are respectively provided with a positioning connecting pipe 12;

[0058] The positioning connecting tube 12 is used to connect the shift finger in the external shift selection mechanism (for example, plug in) and plays a positioning role.

[0059] It should be noted that the shift finger is a specific shift action component in the existing gearbox's gear selection and shift mechanism. The existing gearbox's gear selection and shift mechanism is an existing device. For example, a two-speed gear selection and shift mechanism produced by Weichai Power Co., Ltd. can be used to automatically control the gear selection and shift of the gearbox.

[0060] It should be noted that the axial locking mechanism of the present invention can be used in an existing gear selection and shifting test bench to simulate the running resistance of the gear selection and shifting mechanism in an actual vehicle.

[0061] The slide 3 is used to provide support, the hydraulic oil provides pressure to the clamping sleeve 4, and the clamping sleeve 4 clamps the main shaft 1, thereby providing friction resistance to the gear selection and shifting mechanism.

[0062] It should be noted that, for the axial locking mechanism provided by the present invention, considering that the actual shifting time of the existing shift test bench is within 200ms, after repeated demonstration, the hydraulic axial locking mechanism provided by the present invention is adopted, and the loading oil volume changes by 1cm 3 , which can ensure a quick response.

[0063] In summary, compared with the prior art, the axial locking mechanism provided by the present invention has a scientific structural design, can reliably lock the shaft on the gear selection and shifting test bench, meets the use requirements of the test bench, and has important production practical significance.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An axial locking mechanism, characterized in that: including a transversely distributed principal axis (1); A clamping sleeve (4) is respectively sleeved on the left and right ends of the central main body (10) of the main shaft (1); The outside of the two clamping sleeves (4) is covered with a sliding seat (3); The left and right sides of the slide seat (3) are respectively connected to a sealing gland (2); Each sealing gland (2) is sleeved on the outside of the middle main body portion (10) of the main shaft (1); The outer side of each sealing gland (2) is provided with an annularly distributed dust ring receiving groove; An annular dust ring (5) is embedded in the dust ring receiving groove; The dust ring (5) is sleeved on the outer surface of the middle main body part (10) of the main shaft (1); The four corners of each sealing gland (2) are fixedly connected to the slide seat (3) via a hexagon socket screw (6). An elastic washer (7) is provided between the head of the hexagon socket screw (6) and the sealing gland (2); A pair of hydraulic oil inlet and outlet holes (11) are respectively provided at the left and right ends of the front side of the slide (3); Each pair of oil inlet and outlet holes (11) includes an oil inlet hole and an oil outlet hole; Each pair of oil inlet and outlet holes (11) is respectively connected to a cavity where the outer wall of the clamping sleeve (4) is located, and is used to transport hydraulic oil to the clamping sleeve (4); The upper and lower ends of the slide seat (3) are respectively provided with a positioning connecting pipe (12); The positioning connecting pipe (12) is used to connect the shift finger in the external shift selection mechanism.

2. The axial locking mechanism according to claim 1, wherein: The clamping sleeve (4) and the middle main body portion (10) of the main shaft (1) are in interference fit.

3. The axial locking mechanism according to claim 1, wherein: The dust ring (5) and the middle main body part (10) of the main shaft (1) are in interference fit.

4. The axial locking mechanism according to claim 1, wherein: The inner sides of the sliding seat (3) are provided with a clamping sleeve accommodating cavity for accommodating the clamping sleeve (4).

5. The axial locking mechanism according to claim 1, wherein: The outer sides of the left and right ends of the slide seat (3) are provided with annularly distributed sealing gland embedding grooves; The sealing cover (2) has an annular protrusion on the side facing the slide seat (3); The annular protrusion is correspondingly embedded in the sealing gland embedding groove on the slide seat (3).

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