Disassembling and assembling device for L-shaped key of transmission output shaft

Abstract

The utility model discloses a transmission output shaft L-shaped key disassembling and assembling device which comprises a coupling tube, a transmission output shaft, an L-shaped key, a connecting rod, a connecting rod, a connecting rod and an L-shaped key, and the coupling tube is axially provided with an inner hole for the transmission output shaft to enter and exit; the interval matching cylinder is fixedly installed on the side wall of the coupling pipe and communicates with the inner hole, and a first containing groove is formed in the upper end of the interval matching cylinder; the pressing rod is connected into the first containing groove and moves in the first containing groove in the vertical direction and in the circumferential direction of the interval matching cylinder, and a second containing groove for containing the L-shaped key to be disassembled and assembled is formed in the bottom of the pressing rod; when the pressing rod moves downwards in the first containing groove in the vertical direction and moves in the circumferential direction of the intermediate matching cylinder, the L-shaped key enters the second containing groove, and the L-shaped key is driven by the second containing groove to be separated from the transmission output shaft. The L-shaped key disassembling and assembling device for the transmission output shaft is simple in structure, easy to operate, high in universality and low in cost, the disassembling and assembling operation safety is effectively improved, and the working efficiency is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle manufacturing, and more specifically, relates to a disassembly and assembly device for an L-shaped key of a transmission output shaft. Background Art

[0002] When assembling a transmission sample or after a test, it is necessary to disassemble and inspect the gears on the output shaft to verify the product status and failure mode. As a key component on the output shaft, the L-shaped six-sided key has the following functions: 1. Keep the spacer between wheels fixed, rotate synchronously with the gear to prevent friction, and at the same time prevent the gear from axially moving; 2. Define the directions and positions of the meshing gears to prevent rotational interference of the meshing gears. Therefore, when disassembling and assembling the gears on the output shaft, it is necessary to first remove the "L-shaped" six-sided key on the output shaft before the entire output shaft can be disassembled. Due to the narrow disassembly and assembly space and the lack of a special disassembly and assembly device for the L-shaped six-sided key, multiple tools need to be used in cooperation each time, there are potential safety hazards during the operation process, and the operability is insufficient, which is time-consuming and laborious. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a disassembly and assembly device for an L-shaped key of a transmission output shaft. The device has a simple structure, is easy to operate, has strong versatility, low cost, effectively improves the safety of disassembly and assembly operations, and further improves work efficiency.

[0004] The specific scheme content is as follows:

[0005] The utility model discloses a disassembly and assembly device for an L-shaped key of a transmission output shaft, including:

[0006] A coupling pipe, which is axially provided with an inner hole for the transmission output shaft to enter and exit.

[0007] An intermediate matching cylinder, which is fixedly installed on the side wall of the coupling pipe and communicates with the inner hole. The upper end of the intermediate matching cylinder is provided with a first receiving groove.

[0008] A pressing rod, which is connected in the first receiving groove and moves vertically and circumferentially along the intermediate matching cylinder in the first receiving groove. The bottom of the pressing rod is provided with a second receiving groove for receiving the L-shaped key to be disassembled and assembled.

[0009] When the pressing rod moves downward vertically and circumferentially along the intermediate matching cylinder in the first receiving groove, the L-shaped key enters the second receiving groove, and the L-shaped key is separated from the transmission output shaft under the drive of the second receiving groove.

[0010] Preferably, the first receiving groove includes a first vertical section and a first horizontal section. The upper end opening of the first vertical section is arranged at the top of the intermediate matching cylinder wall, and the lower end of the first vertical section is connected to the first end of the first horizontal section.

[0011] Preferably, the first receiving groove further includes a second vertical section, the second end of the first horizontal section is connected to the lower end of the second vertical section, and the upper end of the second vertical section is lower than the upper end of the first vertical section.

[0012] Preferably, the second receiving groove includes a third vertical section and a second horizontal section, the lower end opening of the third vertical section is provided at the bottom end of the pressing rod, and the upper end of the third vertical section is connected to the first end of the second horizontal section.

[0013] Preferably, the second receiving groove further includes a fourth vertical section, the second end of the second horizontal section is connected to the upper end of the fourth vertical section, and the lower end of the third vertical section is lower than the lower end of the fourth vertical section.

[0014] Preferably, a stepped platform is provided along the inner wall of the mating cylinder; a convex platform is provided in the middle of the pressing rod, and a spring is connected between the upper part of the stepped platform and the bottom of the convex platform.

[0015] Preferably, a limiting block is provided on the convex platform, and the limiting block is slidably connected in the first receiving groove.

[0016] Preferably, the mating cylinder is perpendicular to the coupling pipe.

[0017] Preferably, the top of the pressing rod is arranged outside the mating cylinder, and the middle and bottom of the pressing rod are arranged inside the mating cylinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The disassembly and assembly device of the present invention adjusts the height of the pressing rod and controls the circumferential movement of the pressing rod along the mating cylinder, so that the L-shaped key enters the second receiving groove of the pressing rod while keeping the relative position and height of the L-shaped key and the transmission output shaft unchanged. When the pressing rod moves upward, the L-shaped key follows the pressing rod and lifts upward, thus realizing the disassembly and assembly of the L-shaped key. This device has a simple structure, is easy to operate, has strong versatility, low cost, effectively improves the safety of disassembly and assembly operations, and further improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of the pressing rod of the present invention;

[0022] Figure 3 is a schematic diagram of the structure of the mating cylinder of the present invention;

[0023] Figure 4Schematic diagram of the pressing rod and spring of the present utility model;

[0024] Figure 5 Schematic diagram of the intermediate matching cylinder and spring of the present utility model;

[0025] In the figure:

[0026] 1. Coupling pipe; 2. Intermediate matching cylinder; 21. First accommodating groove; 211. First vertical section; 212. Second vertical section; 213. First horizontal section; 3. Spring; 4. Pressing rod; 41. Second accommodating groove; 411. Third vertical section; 412. Fourth vertical section; 413. Second horizontal section; 42. Limit block. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] The terms used in the present utility model are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The singular forms of "a", "the" and "said" used in the present utility model and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two.

[0029] It should be noted that the orientation or positional relationship indicated by the terms "front", "rear", "inner", "outer", etc. in the present utility model is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, 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 cannot be construed as a limitation to the present utility model.

[0030] It should be particularly noted that the symbols and / or numbers existing in the specification, if not marked in the drawing description, are not drawing reference numerals.

[0031] Embodiment 1:

[0032] Refer to Figures 1-3 As shown, a disassembly and assembly device for an L-shaped key of a transmission output shaft provided by an embodiment of the present application includes: a coupling pipe 1, and the coupling pipe 1 is axially provided with an inner hole for the transmission output shaft to enter and exit;

[0033] The intermediate matching cylinder 2 is fixedly installed on the side wall of the coupling pipe 1 and is communicated with the inner hole. A first receiving groove 21 is provided at the upper end of the intermediate matching cylinder 2;

[0034] The pressing rod 4 is connected in the first receiving groove 21 and moves vertically and circumferentially along the intermediate matching cylinder 2 in the first receiving groove 21. A second receiving groove 41 for receiving the L-shaped key to be disassembled and assembled is provided at the bottom of the pressing rod 4;

[0035] When the pressing rod 4 moves downward vertically and circumferentially along the intermediate matching cylinder 2 in the first receiving groove 21, the L-shaped key enters the second receiving groove 41, and the L-shaped key is separated from the transmission output shaft under the drive of the second receiving groove 41.

[0036] The L-shaped key disassembled and assembled by the disassembly and assembly device of this embodiment is installed at the gear gap of the transmission output shaft. The long side of the L-shaped key is parallel to the axial direction of the transmission output shaft and is arranged in the gap between adjacent gears of the output shaft. The top end of the long side of the L-shaped key is inserted into the bottom of the transmission output shaft. The short side of the L-shaped key is parallel to the radial direction of the output shaft and is inserted into the output shaft.

[0037] The coupling pipe 1 is sleeved outside the transmission output shaft. The axis of the coupling pipe 1 coincides with the axis of the transmission output shaft. An L-shaped intermediate matching cylinder installation groove is provided on the side wall of the coupling pipe 1. A positioning block is provided on the outer wall of the intermediate matching cylinder 2. The intermediate matching cylinder 2 is detachably installed in the L-shaped intermediate matching cylinder installation groove through the positioning block. The intermediate matching cylinder 2 is communicated with the coupling pipe 1 to ensure that the operator can operate on the transmission output shaft in the coupling pipe 1 through the intermediate matching cylinder 2. The intermediate matching cylinder 2 is located above the L-shaped key to be disassembled and assembled. The upper end of the intermediate matching cylinder 2 is provided with a first receiving groove 21. Since the first receiving groove 21 is provided with paths in both the vertical direction and the circumferential direction along the intermediate matching cylinder 2, the pressing rod 4 can move vertically and circumferentially along the intermediate matching cylinder 2.

[0038] The pressing rod moves in the first receiving groove 21, so that the second receiving groove 41 at the bottom of the pressing rod 4 is sleeved outside the L-shaped key to be disassembled and assembled. During this process, the relative position and height of the L-shaped key and the transmission output shaft remain unchanged. When the pressing rod 4 moves upward vertically, it drives the L-shaped key to move upward a certain distance, and the L-shaped key can be taken out integrally by axially moving the coupling pipe 1 outward.

[0039] See Figure 3 As shown, the first receiving groove 21 includes a first vertical section 211 and a first horizontal section 213. The upper end of the first vertical section 211 is open at the top of the cylinder wall of the intermediate matching cylinder 2, and the lower end of the first vertical section 211 is connected to the first end of the first horizontal section 213.

[0040] The first receiving groove 21 has a first vertical section 211, enabling the pressing rod 4 to move vertically, and has a first horizontal section 213, enabling the pressing rod 4 to rotate a certain angle around its own axis.

[0041] See Figure 3 As shown, the first receiving groove 21 further includes a second vertical section 212. The second end of the first horizontal section 213 is connected to the lower end of the second vertical section 212, and the upper end of the second vertical section 212 is lower than the upper end of the first vertical section 211. The first receiving groove 21 is set as a U-shaped moving track, ensuring that during use, the pressing rod 4 is not easily separated from the intermediate matching cylinder 2, and increasing the stability of the disassembly and assembly device during use.

[0042] See Figure 2 As shown, the second receiving groove 41 includes a third vertical section 411 and a second horizontal section 413. The lower end opening of the third vertical section 411 is arranged at the bottom end of the pressing rod 4, and the upper end of the third vertical section 411 is connected to the first end of the second horizontal section 413. Due to the vertical movement of the pressing rod 4 and the circumferential movement along the intermediate matching cylinder 2, the long side of the L-shaped key is located within the second horizontal section 413. During this process, the relative position and height of the L-shaped key and the transmission output shaft remain unchanged.

[0043] See Figure 2 As shown, the second receiving groove 41 further includes a fourth vertical section 412. The second end of the second horizontal section 413 is connected to the upper end of the fourth vertical section 412, and the lower end of the third vertical section 411 is lower than the lower end of the fourth vertical section 412. The part surrounded by the third vertical section 411, the second horizontal section 413 and the fourth vertical section 412 at the bottom of the pressing rod 4 is used as a blocking part. When the L-shaped key enters the lower end of the fourth vertical section 412, it is not easily slipped out of the second receiving groove 41.

[0044] See Figure 1 、 2 As shown in FIGS. 4 and 5, the intermediate matching cylinder 2 is provided with a stepped platform along the inner wall; a convex platform is provided in the middle of the pressing rod 4, and a spring 3 is connected between the upper part of the stepped platform and the bottom of the convex platform.

[0045] A spring 3 is provided between the inside of the intermediate matching cylinder 2 and the pressing rod 4. When no downward pressure is applied to the top of the pressing rod 4, the spring 3 provides an upward supporting force to the convex platform in the middle of the pressing rod 4, so that the bottom of the pressing rod 2 is located inside the intermediate matching cylinder 2 and does not extend into the inside of the coupling pipe 1, ensuring that the coupling pipe 1 will not be blocked by the bottom of the pressing rod 4 during the process of sleeving the coupling pipe 1 outside the output shaft; when a downward pressure is applied to the top of the pressing rod 4, the spring 3 is compressed. After adjusting the pressing rod 4 so that the L-shaped key is located at a suitable position in the second receiving groove 42, the downward pressure applied to the top of the pressing rod 4 is cancelled, and the compressed spring 3 pushes the pressing rod 4 upward, thus lifting the L-shaped key.

[0046] See Figures 1-5As shown, a limiting block 42 is provided on the boss 4, and the limiting block 42 is slidably connected in the first receiving groove 21. The mutual cooperation between the limiting block 42 and the first receiving groove 21 facilitates the staff to control the movement track of the pressing rod 4.

[0047] See Figure 1 As shown, the intermediate matching cylinder 2 is perpendicular to the coupling pipe 1. Due to the limited depth and width of the clearance between the gears of the transmission output shaft, the intermediate matching cylinder 2 is vertically installed at the side wall of the coupling pipe 1 to ensure that the second receiving groove 41 of the pressing rod 4 can smoothly sleeve outside the L-shaped key and drive the L-shaped key to move upward in the vertical direction.

[0048] See Figure 1 As shown, the top of the pressing rod 4 is arranged outside the intermediate matching cylinder 2, and the middle and bottom of the pressing rod are arranged inside the intermediate matching cylinder 2. The top of the pressing rod 4 is arranged outside the intermediate matching cylinder 2, which is convenient for the user to operate the pressing rod 4.

[0049] Furthermore, the diameter of the bottom of the pressing rod 4 is smaller than the distance between adjacent gears of the transmission output shaft, ensuring that the bottom of the pressing rod 4 can extend into the gear clearance.

[0050] Furthermore, the first vertical section 211 is arranged on the right side of the second vertical section 212, and the third vertical section 411 is arranged on the left side of the fourth vertical section 412.

[0051] Furthermore, the bottom of the pressing rod 4 is of a cylindrical structure or a sheet structure.

[0052] The using process of the L-shaped key disassembly and assembly device for the transmission output shaft of this embodiment is as follows:

[0053] Put the coupling pipe 1 on the outside of the transmission output shaft, adjust the entering distance of the output shaft, so that the intermediate matching cylinder 2 is located above the long side of the L-shaped key, press down the pressing rod 4 and then rotate the pressing rod 4 to make the long side of the L-shaped key enter the second receiving groove 41. During this process, the relative position and height of the L-shaped key and the transmission output shaft remain unchanged.

[0054] Stop pressing down the pressing rod 4. Under the action of the compressed spring 3, the pressing rod 4 moves upward as a whole, driving the long side of the L-shaped key in the second receiving groove 41 to move upward a certain distance, so that the short side of the L-shaped key is separated from the inner part of the output shaft. Then operate the coupling pipe 1 to move axially outward, and the L-shaped key can be taken out.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transmission output shaft L-shaped key disassembly and assembly device, characterized in that: include: A coupling tube (1), wherein the coupling tube (1) is provided with an inner hole along the axial direction for the transmission output shaft to enter and exit; An intermediate tube (2), the intermediate tube (2) is fixedly mounted on the side wall of the coupling tube (1) and communicated with the inner hole, and a first receiving groove (21) is formed at the upper end of the intermediate tube (2); A pressing rod (4), the pressing rod (4) being connected to the first receiving groove (21) and moving in the first receiving groove (21) in a vertical direction and in a circumferential direction of the intermediate tube (2), and a second receiving groove (41) for receiving an L-shaped key to be disassembled is provided at the bottom of the pressing rod (4); When the pressing rod (4) moves downward in the vertical direction in the first receiving groove (21) and moves circumferentially along the intermediate sleeve (2), the L-shaped key enters the second receiving groove (41), and the L-shaped key is separated from the transmission output shaft under the drive of the second receiving groove (41).

2. The transmission output shaft L-shaped key disassembly and assembly device according to claim 1, characterized in that: The first receiving groove (21) comprises a first vertical section (211) and a first horizontal section (213); the upper end opening of the first vertical section (211) is arranged at the top end of the wall of the intermediate tube (2); and the lower end of the first vertical section (211) is connected to the first end of the first horizontal section (213).

3. The transmission output shaft L-shaped key disassembly and assembly device according to claim 2, characterized in that: The first receiving groove (21) further comprises a second vertical section (212), the second end of the first horizontal section (213) is connected to the lower end of the second vertical section (212), and the upper end of the second vertical section (212) is lower than the upper end of the first vertical section (211).

4. A transmission output shaft L-shaped key disassembly and assembly device according to claim 3, characterized in that: The second receiving groove (41) comprises a third vertical section (411) and a second horizontal section (413), the lower end opening of the third vertical section (411) is arranged at the bottom end of the pressing rod (4), and the upper end of the third vertical section (411) is connected to the first end of the second horizontal section (413).

5. The transmission output shaft L-shaped key disassembly and assembly device according to claim 4, characterized in that: The second receiving groove (41) also includes a fourth vertical section (412), the second end of the second horizontal section (413) is connected to the upper end of the fourth vertical section (412), and the lower end of the third vertical section (411) is lower than the lower end of the fourth vertical section (412).

6. A transmission output shaft L-shaped key disassembly and assembly device according to any one of claims 1 to 5, characterized in that: The intermediate tube (2) is provided with a stepped platform along the inner wall; the pressing rod (4) is provided with a boss in the middle, and a spring (3) is connected between the upper part of the stepped platform and the bottom of the boss.

7. A transmission output shaft L-shaped key disassembly and assembly device according to claim 6, characterized in that: A limit block (42) is provided on the boss, and the limit block (42) is slidably connected in the first receiving groove (21).

8. The transmission output shaft L-shaped key disassembly and assembly device according to claim 1, characterized in that: The intermediate tube (2) is perpendicular to the coupling tube (1).

9. The transmission output shaft L-shaped key disassembly and assembly device according to claim 1, characterized in that: The top of the pressing rod (4) is arranged outside the intermediary tube (2), and the middle and bottom of the pressing rod are arranged inside the intermediary tube (2).

Images