Novel bearingless structure rod wire joint shaft

Abstract

A new type of bearingless structure rod wire joint shaft, including: roller end assembly, spline shaft and tooth end assembly, roller end assembly is arranged in spline shaft one end, tooth end assembly is arranged in spline shaft the other end, roller end assembly includes roller end sleeve, mandrel, inner ring, cover and first outer tooth sleeve, roller end sleeve one end close to inner ring one end, mandrel is arranged on inner ring inner wall, inner ring is connected with first outer tooth sleeve through gear pair, cover is fixedly installed on inner ring, and is located between mandrel and first outer tooth sleeve, inner ring inner wall is equipped with steel ball automatic locking assembly, steel ball automatic locking assembly and mandrel below are equipped with pin, and the pin is located on the inner wall of the inner ring, the steel ball in the steel ball automatic locking assembly is clamped into the first recess, so that the pin is more stable to the mandrel axial limiting, and then the axial of the roller is limited, which avoids the outward traction force of the roller axial when the roller rotates at high speed, so that the roller deviates from the roller end assembly, and the rolling effect is affected.

Description

Technical Field

[0001] This utility model relates to the field of transmission technology, and in particular to a novel bearingless structure bar-wire connector. Background Technology

[0002] A coupling is a device in a mechanical transmission system used to connect two shafts and transmit torque and rotational motion. Its core function is to ensure that the two shafts can still transmit torque and rotational motion efficiently and stably even with certain angular or positional deviations.

[0003] In the prior art, in order to ensure that the telescopic roll does not detach from the connecting shaft, a retainer is set to fix the axial position of the connecting shaft roll end assembly. However, the bearing inside the retainer is easily damaged and requires regular lubrication or a continuous oil supply device. Furthermore, the tooth end assembly and the reducer output shaft are connected by a spline. After the spline wears, the internal bolts are easily cut off. In particular, in the tooth end assembly, the machining dimensions of the spherical sealing copper ring of the outer tooth bushing are not easy to control, which can easily cause spherical fit errors due to dimensional errors, affecting the final use.

[0004] Existing technologies still suffer from issues such as moisture and high temperatures at the end caps of the roller end assembly, which affect the service life of the end cap seal and the lubrication of the teeth.

[0005] During the use of the roller assembly, the flat hole of the roller end assembly will wear out and the entire shaft needs to be disassembled and replaced. In addition, when the roller rotates at high speed, the axial force will generate an outward pulling force, causing the roller to deviate outward from the roller end assembly, which will affect the rolling effect. Utility Model Content

[0006] The purpose of this utility model is to solve the problems in the prior art mentioned above, and to propose a novel bearingless structure bar wire connector.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A novel bearingless bar / wire connector includes: a roller end assembly, a splined shaft, and a toothed end assembly;

[0009] The roller end assembly is disposed at one end of the splined shaft, and the toothed end assembly is disposed at the other end of the splined shaft.

[0010] The roller end assembly includes a roller end bushing, a mandrel, an internal gear ring, a sleeve, and a first external gear bushing.

[0011] One end of the roller end sleeve is tightly attached to one end of the internal gear ring. The mandrel is set on the inner wall of the internal gear ring. The internal gear ring is meshed with the first external gear sleeve through a gear pair. The sleeve is fixedly installed on the internal gear ring and is located between the mandrel and the first external gear sleeve. A steel ball automatic locking assembly is provided in the inner wall of the internal gear ring. A pin is provided below the steel ball automatic locking assembly and the mandrel, and the pin is located on the inner wall of the internal gear ring.

[0012] Furthermore, the first outer toothed sleeve is provided with a first end cap, which is fixedly connected to one side of the first baffle.

[0013] Furthermore, a first gasket group is provided between the first end cap and one end of the internal gear ring. The gasket group includes a first gasket and a second gasket, with one side of the first gasket attached to one side of the second gasket.

[0014] Furthermore, the toothed end assembly includes: a second external toothed bushing, a toothed end bushing, and a tapered sleeve;

[0015] The second external gear bushing is meshed with the tooth end bushing via a gear pair, and the tapered sleeve is disposed inside the tooth end bushing.

[0016] Furthermore, the second external gear bushing is provided with a second end cap, which is fixedly connected to one side of the second baffle.

[0017] Furthermore, a second gasket group is provided between the toothed end bushing and one end of the second end cover. The second gasket group includes a third gasket and a fourth gasket, with one side of the third gasket attached to one side of the fourth gasket.

[0018] Furthermore, the automatic locking assembly for the steel ball includes: a spring, a cylindrical pin, and a steel ball;

[0019] The spring is connected to a screw and then to a cavity on the internal gear ring. The bottom end of the spring is in contact with a cylindrical pin, which is fixedly connected to a steel ball. The spring, the cylindrical pin, and the steel ball are all located within the cavity.

[0020] Compared with existing technologies, the advantages of this invention are:

[0021] 1. This utility model uses an automatic steel ball locking assembly installed inside the internal gear ring. Before the shaft is engaged, the pin is rotated, causing the first groove on the pin to move directly below the automatic steel ball locking assembly. At this time, the steel column in the automatic steel ball locking assembly is locked into the first groove by the spring force, preventing the pin from rotating back. This makes the pin more stable and limits the axial movement of the mandrel, further limiting the axial movement of the roll fixed on the mandrel. This prevents the roll from being pulled outward by the axial force when it rotates at high speed, thus avoiding the roll from deviating from the roll end assembly and affecting the rolling effect.

[0022] 2. In this utility model, the internal gear ring, the first external gear bushing, and the first end cover are designed separately. By changing the position of the first end cover, the first end cover is moved away from the roller, thus avoiding the impact of high temperature and moisture generated by the high-speed rotation of the roller on the sealing life of the first end cover.

[0023] 3. This utility model provides a first gasket set between the first end cover and one end of the inner gear ring, and a second gasket set between the second outer gear sleeve and one end of the second end cover to adjust the gap of the spherical sealing copper ring of the outer gear sleeve, so as to avoid spherical fit error.

[0024] 4. The present invention has a tapered sleeve in the tooth end assembly that is interference-fitted with the output shaft of the reducer, which can ensure the connection strength and avoid wear on the mating surface. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a novel bearingless bar-wire connector proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of a novel bearingless structure for a bar wire connecting to a roller end bushing, as proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of a novel bearingless bar / wire shaft limiting ring structure proposed in this utility model.

[0028] Figure 5 This is a cross-sectional view of the AA section of a novel bearingless bar wire connecting shaft proposed in this utility model.

[0029] Figure 4 This is a cross-sectional structural diagram of the BB junction of a novel bearingless bar wire structure proposed in this utility model.

[0030] Figure 6 This is an enlarged view of the shaft I of a novel bearingless structure bar wire proposed in this utility model.

[0031] In the diagram: 1. Roller end sleeve, 2. Limiting ring, 3. Mandrel, 4. Internal gear ring, 5. Sleeve, 6. First slider, 7. First external gear sleeve, 8. Second slider, 9. First gasket, 10. First gasket, 11. First end cap, 12. First baffle, 13. Ring, 14. Splined shaft, 15. Protective cover, 16. Second external gear sleeve, 17. Gear end sleeve, 18. Tapered sleeve, 19. Second end cap, 20. Second baffle, 21. Third slider, 22. Pin, 23. Fourth slider, 24. First screw plug, 25. Copper gasket, 26. O-ring seal, 27. Type A nameplate, 28. Round rubber tube, 29. Second screw plug, 30. Spring, 31. Cylindrical pin, 32. Steel ball, 33. Third gasket, 34. Fourth gasket. Detailed Implementation

[0032] The present invention will be further explained below with reference to the accompanying drawings.

[0033] like Figure 1-3As shown, this utility model provides a novel bearingless structure bar wire connector, including: a roller end assembly, a splined shaft 14, and a toothed end assembly;

[0034] The roller end assembly is located at one end of the splined shaft 14, and the toothed end assembly is located at the other end of the splined shaft 14.

[0035] The roller end assembly includes a roller end bushing 1, a mandrel 3, an internal gear ring 4, a sleeve 5, and a first external gear bushing 7;

[0036] One end of the roller end sleeve 1 is tightly attached to one end of the inner gear ring 4. The mandrel 3 is set on the inner wall of the inner gear ring 4. The inner gear ring 4 is connected to the first outer gear sleeve 7 through a gear pair. The sleeve 5 is fixedly installed on the inner gear ring 4 and is located between the mandrel 3 and the first outer gear sleeve 7. A steel ball automatic locking assembly is provided in the inner wall of the inner gear ring 4. A pin 22 is provided below the steel ball automatic locking assembly and the mandrel 3, and the pin 22 is located on the inner wall of the inner gear ring 4. A ring 13 is also fixed on the first outer gear sleeve 7 by screws. An annular groove is opened on the mandrel 3.

[0037] The roller end assembly is used to connect the roller, the toothed end assembly is used to connect the output end of the geared motor, the mandrel 3 and the roller end bushing 1 are connected by a toothed clutch, and a limit ring 2 is set between the mandrel 3 and the roller end bushing 1 to ensure that the mandrel 3 and the roller end bushing 1 do not separate during operation.

[0038] The first external gear sleeve 7 is provided with a first end cover 11. The first end cover 11 is fixed to one side of the first baffle 12 by screws, and the first baffle 12 does not contact the first external gear sleeve 7. A first gasket 9 and a second gasket 10 are provided between the first end cover 11 and one end of the internal gear ring 4. One side of the first gasket 9 and one side of the second gasket 10 are attached to each other. The other side of the first gasket 9 is tightly attached to one end of the internal gear ring 4, and the other side of the second gasket 10 is tightly attached to the first end cover 11. The outer side of the first external gear sleeve 7 is provided with a first slider 6 and a second slider 8 to restrict the movement of the first external gear sleeve 7 on both sides.

[0039] In this embodiment, the internal gear ring 4, the first external gear bushing 7, and the first end cover 11 are designed in a split manner. The position of the first end cover 11 is changed so that the first end cover 11 is far away from the roller, thus avoiding the impact of high temperature and moisture generated by the high speed rotation of the roller on the sealing life of the first end cover 11. The first gasket 9 and the second gasket 10 are used to adjust the gap of the spherical sealing copper ring of the external gear bushing set on the first end cover 11.

[0040] The toothed end assembly includes a second external toothed bushing 16, a toothed end bushing 17, and a tapered sleeve 18. The second external toothed bushing 16 is meshed with the toothed end bushing 17 via a gear pair, and the tapered sleeve 18 is disposed inside the toothed end bushing 17.

[0041] In this embodiment, the tapered sleeve 18 is used for an interference fit with the output shaft of the geared motor, so that the connection between the tooth end assembly and the output shaft of the gear reducer becomes a tapered hole interference fit, thereby ensuring the connection strength and avoiding wear on the mating surfaces.

[0042] The second external gear bushing 16 is provided with a second end cover 19. The second end cover 19 is fixed to one side of the second baffle 20 by screws, and the second baffle 20 does not contact the second external gear bushing 16. The second external gear bushing 16 is provided with a third slider 21 and a fourth slider 23 on its outer side.

[0043] In this embodiment, the third slider 21 and the fourth slider 23 are used to restrict the movement of the second external gear sleeve 16 on both sides.

[0044] A protective cover 15 is provided on the spline shaft 14. One end of the protective cover 15 is fixed to the second external gear sleeve 16 by screws, and the inner wall of the other end is sealed with the spline shaft 14 by an O-ring 26. A type A nameplate 27 is also provided on the surface of the protective cover 15.

[0045] In this embodiment, the protective cover 15 is used to protect the surface of the spline shaft 14.

[0046] In the above embodiments, a plurality of first screw plugs 24 are installed on the first external gear bushing 7 and the second external gear bushing 16 via copper gaskets 25. The internal gear ring 4 and the tooth end bushing 17 are both provided with second screw plugs 29. The first screw plugs 24 and the second screw plugs 29 are both used for oiling. The first end cap 11 and the second end cap 19 are both provided with oil cups. O-rings 26 are provided between the internal gear ring 4 and the first end cap 11, between the second slider 8 and the first external gear bushing 7, between the tooth end bushing 17 and the second end cap 19, and between the third slider 21 and the second external gear bushing 16 for sealing. Round rubber tubes 28 are provided between the first end cap 11 and the first external gear bushing 7 and between the second end cap 19 and the second external gear bushing 16.

[0047] like Figure 1 and 4 As shown, the roller end bushing 1 is provided with two liner plates 19, which are fixed to the roller end bushing 1 with screws. The roll is connected through the flat hole of the roller end bushing 1 and fixed to the mandrel 3 with screws. The roller end bushing 1 is snapped onto the roll and one end of the internal gear ring 4 is tightly attached. Part of its inner surface is also threaded to the roll. This structural design ensures that the roll and the connecting shaft extend and retract synchronously, eliminating the need for the existing cage bearing structure. This avoids the problems of easy damage to the bearing inside the cage and the need for regular lubrication or the installation of a continuous oil supply device. At the same time, when the flat hole of the roller end bushing 1 is damaged, the roller end bushing 1 can be removed for replacement or repair by rotating the moving pin 22 to unlock the steel ball automatic locking assembly, without the need for disassembling the entire shaft as in the prior art.

[0048] like Figure 5As shown, a first groove is provided on the side of the pin 22 near the steel ball 32, and a second groove is provided in the middle of the pin 22.

[0049] The automatic steel ball locking assembly is installed in a cavity on the internal gear ring 4. The automatic steel ball locking assembly includes a spring 30, a cylindrical pin 31, and a steel ball 32. The spring 30 is connected to the inner wall of the cavity by screws. The bottom end of the spring 30 is in contact with the cylindrical pin 31. The bottom end of the cylindrical pin 31 is fixedly connected to the steel ball 32. When the pin 22 is rotated so that the first groove is directly below the steel ball 32, under the force of the spring 30, the cylindrical pin 31 slides downward, causing the steel ball 32 to be locked into the first groove to limit the pin 22, so that the pin cannot rotate back. This makes the pin 22 more stable and limits the axial movement of the mandrel 3, further limiting the axial movement of the roll fixed on the mandrel 3. This prevents the roll from being pulled outward by the axial force when the roll rotates at high speed, thus avoiding the roll from deviating from the roll end assembly and affecting the rolling effect.

[0050] like Figure 6 As shown, a third gasket 33 and a fourth gasket 34 are provided between the toothed end bushing 17 and one end of the second end cover 19. The third gasket 33 and the fourth gasket 34 are fitted together, with the other side of the third gasket 33 tightly attached to one end of the second end cover 19, and the other side of the fourth gasket 34 tightly attached to the toothed end bushing 17. The third gasket 33 and the fourth gasket 34 are used to adjust the gap of the spherical sealing copper ring of the external toothed bushing provided on the second end cover 19.

[0051] Working principle:

[0052] First, rotate pin 22 so that the first groove is directly below steel ball 32, and at the same time, let pin 22 be inserted into the annular groove on the spindle 3. Then, the spring 30 drives the cylindrical pin 31 to slide down, so that steel ball 32 is inserted into the first groove to limit pin 22.

[0053] After the limit is completed, the reduction motor is started. The reduction motor drives the roller end assembly, spline shaft 14 and tooth end assembly to make the roller rotate at high speed for rolling.

[0054] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A novel bearingless bar-wire connector, characterized in that, include: Roller end assembly, splined shaft (14) and toothed end assembly; The roller end assembly is disposed at one end of the spline shaft (14), and the tooth end assembly is disposed at the other end of the spline shaft (14); The roller end assembly includes a roller end bushing (1), a mandrel (3), an internal gear ring (4), a sleeve (5), and a first external gear bushing (7); One end of the roller end sleeve (1) is tightly attached to one end of the inner gear ring (4). The mandrel (3) is set on the inner wall of the inner gear ring (4). The inner gear ring (4) is meshed with the first outer gear sleeve (7) through a gear pair. The sleeve (5) is fixedly installed on the inner gear ring (4) and located between the mandrel (3) and the first outer gear sleeve (7). The inner wall of the inner gear ring (4) is provided with a steel ball automatic locking assembly. The steel ball automatic locking assembly and the mandrel (3) are provided with a pin (22) below them, and the pin (22) is located on the inner wall of the inner gear ring (4).

2. The novel bearingless structural bar / wire connector according to claim 1, characterized in that: The first external gear bushing (7) is provided with a first end cap (11), and the first end cap (11) is fixedly connected to one side of the first baffle (12).

3. The novel bearingless structural bar-wire connector according to claim 2, characterized in that: A first gasket group is provided between the first end cap (11) and one end of the internal gear ring (4). The gasket group includes a first gasket (9) and a second gasket (10). One side of the first gasket (9) is attached to one side of the second gasket (10).

4. The novel bearingless structural bar-wire connector according to claim 3, characterized in that: The toothed end assembly includes: a second external toothed bushing (16), a toothed end bushing (17), and a tapered sleeve (18); The second external gear bushing (16) is meshed with the tooth end bushing (17) through a gear pair, and the tapered sleeve (18) is disposed inside the tooth end bushing (17).

5. The novel bearingless structural bar / wire connector according to claim 4, characterized in that: The second external gear bushing (16) is provided with a second end cap (19), and the second end cap (19) is fixedly connected to one side of the second baffle (20).

6. The novel bearingless structural bar / wire connector according to claim 5, characterized in that: A second gasket group is provided between the toothed end bushing (17) and one end of the second end cover (19). The second gasket group includes a third gasket (33) and a fourth gasket (34), with one side of the third gasket (33) attached to one side of the fourth gasket (34).

7. The novel bearingless structural bar / wire connector according to claim 1, characterized in that: The automatic locking assembly for the steel ball includes: a spring (30), a cylindrical pin (31), and a steel ball (32); The spring (30) is connected to the screw and is connected to the cavity opened on the internal gear ring (4) by the screw. The bottom end of the spring (30) is in contact with the cylindrical pin (31). The cylindrical pin (31) is fixedly connected to the steel ball (32). The spring (30), the cylindrical pin (31) and the steel ball (32) are all located in the cavity.

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