Roller end shaft sleeve assembly

Abstract

The utility model discloses a roller end shaft sleeve assembly, which belongs to the technical field of transmission, and comprises a roller end shaft sleeve and a connecting disc, the roller end shaft sleeve is connected with the connecting disc through a first connecting piece, the connecting disc is provided with a shaft head connected with a roller shaft, the outer circle of the shaft head is sleeved with a distance ring, the outer side of the distance ring is provided with an end cover, and the end cover is connected with the connecting disc through a second connecting piece. The end cover and the shaft head are connected through the second connecting piece, so that the distance ring is limited between the end cover and the connecting disc, the distance ring is prevented from loosening and disengaging in the roller replacing process, and the maintenance period of the distance ring is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of transmission, more specifically, relate to a roll end shaft sleeve subassembly. BACKGROUND

[0002] The existing roll end subassembly generally includes roll end shaft sleeve, connecting disc, fixed distance ring, top block, roll end shaft sleeve and connecting disc are fixed through bolt, such as Figure 4 As shown, the fixed distance ring is hot-mounted on the connecting disc shaft head, and the top block is fixed in the inner hole of the connecting disc. The fixed distance ring is sleeved on the connecting disc shaft head, and when the roll shaft needs to be maintained and replaced, the fixed distance ring is easy to be taken out with the rotation of the roll shaft. Since the fixed distance ring and the shaft head are in interference fit, the fixed distance ring needs to be disassembled from the connecting disc and the roll end shaft sleeve for reinstallation once it is taken out, which causes the loosening and separation of the fixed distance ring, affecting the maintenance period of the roll end subassembly.

[0003] In addition, during the installation and maintenance of the roll shaft, the impact between the roll end and the connecting disc not only causes the separation of the fixed distance ring, but also causes the loosening of the connecting disc fixing bolt, affecting the service life of the roll end shaft sleeve and shortening the maintenance period.

[0004] For example, patent CN215143376U discloses a new roll end shaft sleeve, which comprises a roll end shaft sleeve body, a positioning ring, a connecting disc and a baffle, wherein the baffle is arranged at the right end of the roll end shaft sleeve body and fixed on the roll end shaft sleeve body by fasteners; the left end of the positioning ring is in interference fit with the inner hole of the roll end shaft sleeve body, and the right end of the positioning ring penetrates through the baffle and is fixed with the baffle, so that the positioning ring is prevented from falling off during roll replacement, but in this structure, the positioning ring can withstand smaller axial force, and after long-term use, the fixed part loosens or even breaks, and the positioning ring still falls off.

[0005] Therefore, how to avoid the loosening and separation of the fixed distance ring during the roll replacement process is of great significance to prolong the service life and maintenance period of the roll end shaft sleeve. SUMMARY

[0006] 1. Problem to be solved

[0007] In view of the problem that the existing fixed distance ring is easy to loosen and separate, the utility model provides a roll end shaft sleeve subassembly, which effectively improves the installation stability of the fixed distance ring, and the fixed distance ring is not easy to fall off during the roll replacement process.

[0008] 2. Technical scheme

[0009] To solve the above problems, the utility model adopts the following technical scheme.

[0010] A roller end shaft sleeve assembly comprises a roller end shaft sleeve and a connecting disc, which are connected by a first connecting member. The connecting disc is provided with a shaft head connected with a roller shaft, an outer circle of the shaft head is provided with a distance ring, an outer side of the distance ring is provided with an end cover, and the end cover and the shaft head are connected by a second connecting member, so that the distance ring is limited between the end cover and the connecting disc.

[0011] In order to improve the connection stability of the roller end shaft sleeve and the connecting disc, the first connecting member can be multiple, which are circumferentially arranged on the connecting disc, and further, the radius of the first connecting member can be increased to further increase the stress area and improve the connection strength, so as to prevent the first connecting member from being broken; in order to improve the connection stability between the end cover and the shaft head, the second connecting member can be multiple, which are circumferentially arranged on the end cover, and further, the radius of the second connecting member can be increased to further increase the stress area and improve the connection strength, so as to prevent the end cover from falling off the shaft head and causing the distance ring to fall off.

[0012] The distance ring is provided with at least one second exhaust hole in the axial direction, the shaft head of the connecting disc is provided with at least one first exhaust hole in the axial direction, and the first exhaust hole and the second exhaust hole are in corresponding relationship in the axial direction, so that the air at the shaft head is sequentially discharged through the first exhaust hole and the second exhaust hole when the shaft is replaced.

[0013] The number of the first exhaust hole and the second exhaust hole can be one or multiple, and when the number of the exhaust hole is multiple, at least one first exhaust hole and one second exhaust hole are communicated.

[0014] A ring groove is arranged on the matching surface of the connecting disc and the distance ring, the ring groove is arranged on the outer periphery of the connecting disc in the axial direction, and is respectively communicated with the first exhaust hole and the second exhaust hole, so that the air discharged from the shaft head is sequentially discharged through the first exhaust hole, the ring groove and the second exhaust hole.

[0015] The corner between the connecting disc and the shaft head is a corner with an arc surface, since the ring groove is a cavity between the connecting disc and the distance ring, by increasing the corner radius, on the one hand, the cavity of the ring groove is formed, which is convenient for the exhaust hole to discharge air, and on the other hand, increasing the corner radius is beneficial to improve the strength of the connecting disc. Preferably, the corner radius is 8-10mm, which is adjusted according to the size of the roller end structure.

[0016] Further, the first connecting member comprises a bolt, and the end of the bolt is provided with a washer and a snap ring, which are used for preventing the bolt from loosening.

[0017] Further, the second connecting member is a bolt, which is used for fixing and preventing the bolt from loosening.

[0018] Further, the matching surface of the roller end shaft sleeve and the connecting disc is provided with a sealing ring to prevent water from entering and prevent lubricating oil from leaking out, and to protect the tooth part lubrication.

[0019] The roller end shaft sleeve assembly of the utility model is suitable for toothed shafts, especially drum-shaped toothed shafts.

[0020] 3, beneficial effects

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] (1) the utility model discloses a distance ring is limited between the end cover and the connecting disc, prevents the distance ring from loosening and separating in the roller changing process, effectively prolongs the maintenance period of the distance ring, and facilitates the replacement of the distance ring;

[0023] (2) the first connecting piece for connecting the roller end shaft sleeve and the connecting disc can be multiple, and is circumferentially arranged on the connecting disc; the second connecting piece for connecting the end cover and the shaft head can be multiple, and is circumferentially arranged on the end cover, thereby improving the connection stability and preventing the distance ring from falling off due to the fracture of the connecting part;

[0024] (3) the utility model discloses that the air ventilation demand of the shaft head after adding the end cover is considered, and the exhaust hole is radially arranged on the distance ring and the shaft head; in order to prevent the distance ring from rotating and the exhaust hole from being dislocated, the shaft head cannot ventilate, and the ring groove is arranged on the connecting disc, the exhaust hole of the distance ring and the shaft head is communicated, and the distance ring rotates; the shaft head can also ventilate;

[0025] (4) the corner between the connecting disc and the shaft head is located in the cavity of the ring groove, the ring groove cavity is arranged on the connecting disc by increasing the corner radius, the exhaust hole exhausts, and in addition, the increase of the corner radius can improve the strength of the connecting disc, and prevents the corner from cracking;

[0026] (5) the utility model discloses that the snap ring washer structure is increased on the connecting piece of the connecting disc and the roller end shaft sleeve, and the roller end shaft sleeve and the connecting disc are fixed and prevented from loosening. BRIEF DESCRIPTION OF DRAWINGS

[0027] The technical scheme of the utility model will be further described in detail below in combination with the drawings and embodiments, but it should be known that these drawings are only designed for the purpose of explanation, so the scope of the utility model is not limited. In addition, unless specifically pointed out, these drawings only intend to conceptually illustrate the structural configuration described herein, and do not necessarily be drawn in proportion.

[0028] Figure 1 It is the schematic diagram of the roller end shaft sleeve assembly of the utility model;

[0029] Figure 2The utility model discloses a roller end assembly first connecting piece structure schematic diagram.

[0030] Figure 3 The utility model discloses a roller end assembly shaft head and fixed distance ring structure schematic diagram.

[0031] In the drawing: 1, roller end shaft sleeve;2, connecting disc;21, shaft head;22, first exhaust hole;23, ring groove;3, first connecting piece;31, bolt;32, washer;33, snap ring;4, sealing ring;5, fixed distance ring;51, second exhaust hole;6, end cover;7, second connecting piece;8, top block;

[0032] Figure 4 It is prior art roller end shaft sleeve assembly schematic diagram. DETAILED DESCRIPTION

[0033] The following detailed description of the utility model and the example embodiment can be better understood in conjunction with the drawings, wherein the elements and features of the utility model are identified by the reference signs.

[0034] The following detailed description of the example embodiment of the application refers to the drawings, which form a part of the description, and show in the drawings as an example the example embodiment in which the application can be implemented. It should be understood that the following text is only used to describe one or several specific embodiments of the application, and does not strictly limit the specific protection scope requested by the application. The structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the implementation conditions of the utility model, so they do not have the technical essence. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose of the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "up", "down", "left", "right", "middle" and the like in the specification are only used to make the description clear, and are not used to limit the implementation range, the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the implementation scope of the utility model.

[0035] Example 1

[0036] When the roller shaft is assembled, a distance ring 5 needs to be added, which can not only effectively fix the inner ring of the roller shaft to prevent it from rotating or moving during operation, but also keep the cooperation gap between the inner ring of the bearing and the shaft stable when bearing radial and axial loads, thereby greatly improving the working performance and load capacity of the bearing. The existing distance ring 5 is generally sleeved on the shaft head 21 of the connecting disc 2. When the roller shaft is assembled, the roller end is inserted into the shaft head 21 to achieve the fixing effect. When the shaft needs to be replaced, the roller shaft is turned out to achieve replacement. However, when the shaft is actually replaced, since the distance ring 5 is sleeved on the shaft head 21, the distance ring 5 will also be taken out at the same time as the shaft roller is turned out, resulting in the failure of the distance ring 5.

[0037] Therefore, the utility model provides a kind of roller end shaft sleeve assembly, by being equipped with end cover 6 structure in distance ring 5 outer end, it is limited in end cover 6 and connecting disc 2 between distance ring 5, prevent being taken out when replacing shaft, specifically, the roller end shaft sleeve assembly as shown in Figures 1-2 It is shown that: including roller end shaft sleeve 1 and connecting disc 2, the roller end shaft sleeve 1 and the connecting disc 2 are connected by the first connecting piece 3. The first connecting piece 3 includes a bolt 31, and the end of the bolt 31 is provided with a washer 32 and a snap ring 33, which plays a locking effect on the bolt 31.

[0038] The cooperation surface of the roller end shaft sleeve 1 and the connecting disc 2 is provided with a sealing ring 4, which prevents water from entering the gear part during rolling, prevents the leakage of lubricating oil in the gear part, and causes the gear part to fail due to insufficient lubrication.

[0039] Specifically, the connecting disc 2 includes a driving side and a working side, the inner hole of the driving side is provided with a fixed top block 8 for pressing the shaft, which plays a role in limiting the roller end assembly in the axial direction, and the working side supports the roller shaft, the working side of the connecting disc 2 is provided with a shaft head 21 connected with the roller shaft, the roller shaft is sleeved on the shaft head 21, and the outer circle of the shaft head 21 is sleeved with a distance ring 5, and the distance ring 5 is connected with the shaft head 21 in interference, for positioning the roller shaft.

[0040] The connecting disc 2 is provided with a shaft head 21 connected with the roller shaft, the outer circle of the shaft head 21 is sleeved with a distance ring 5, the outer side of the distance ring 5 is provided with an end cover 6, and the end cover 6 and the shaft head 21 are connected by a second connecting piece 7, so that the distance ring 5 is limited between the end cover 6 and the connecting disc 2.

[0041] The second connecting piece 7 is a bolt 31, which plays a locking effect on the roller end shaft sleeve 1 and the distance ring 5.

[0042] In order to improve the connection stability of the roller end shaft sleeve 1 and the connecting disc 2, the first connecting piece 3 is provided with eight, which is circumferentially arranged on the connecting disc 2 to improve the connection strength and prevent breakage; the second connecting piece 7 is provided with eight, which is circumferentially arranged on the end cover 6 to prevent the end cover 6 from falling off the shaft head and causing the distance ring 5 to fall off.

[0043] In the process of mounting and dismounting the roller shaft, the vacuum condition of the shaft head 21 easily increases the difficulty of mounting the roller shaft, and therefore the application radially opens two first exhaust holes 22 at the position of the shaft head 21 of the connecting disc 2. Correspondingly, the distance ring 5 is axially opened with two second exhaust holes 51, and the positions of the first exhaust holes 22 and the second exhaust holes 51 correspond to each other so that the first exhaust holes 22 and the second exhaust holes 51 are communicated, and the air of the shaft head 21 is exhausted through the first exhaust holes 22 and the second exhaust holes 51.

[0044] Embodiment 2

[0045] In the actual roller replacement process, the roller rotates, and the positioning ring is easy to rotate in the process. Once the exhaust holes on the distance ring 5 and the shaft head 21 are misaligned, the air of the shaft head 21 is difficult to exhaust. Therefore, the application opens a ring groove 23 on the matching surface of the connecting disc 2 and the distance ring 5. The ring groove 23 is a cavity between the connecting disc 2 and the distance ring 5, which is axially opened on the outer periphery of the connecting disc 2 and is communicated with the first exhaust hole 22 and the second exhaust hole 51 respectively, so that the gas of the shaft head 21 flows between the first exhaust hole 22, the ring groove 23 and the second exhaust hole 51. Its structure is shown in Figure 3 .

[0046] When the distance ring 5 rotates during the mounting process of the roller shaft, the first exhaust hole 22 and the second exhaust hole 51 are misaligned, and the air of the shaft head 21 enters the ring groove 23 through the first exhaust hole 22, and then enters the second exhaust hole 51 through the ring groove 23, so as to realize the exhaust of the gas. When the distance ring 5 rotates during the dismounting process of the roller shaft, the first exhaust hole 22 and the second exhaust hole 51 are misaligned, and the external air enters the ring groove 23 through the second exhaust hole 51, and then enters the first exhaust hole 22 through the ring groove 23, so as to realize the entry of the gas, which is beneficial to the replacement of the roller shaft and avoids the difficulty of replacing the roller shaft due to the vacuum environment of the shaft head 21.

[0047] The corner between the connecting disc 2 and the shaft head 21 is located in the cavity of the ring groove 23 formed by the contact surface of the connecting disc 2 and the positioning ring. The corner is a corner with an arc surface, and the radius of the corner is 10 mm. In the prior art, the corner between the connecting disc 2 and the shaft head 21 is generally a right angle, which causes stress concentration at the corner. Especially when the roller shaft collides with the connecting disc 2, the right angle is easy to crack. Therefore, by increasing the radius of the corner, on the one hand, the cavity of the ring groove 23 is formed, which is beneficial to the exhaust of the exhaust hole, and on the other hand, increasing the radius of the corner is beneficial to improving the strength of the connecting disc 2, preventing the cracking of the right angle of the connecting disc 2, and improving the service life.

[0048] The above describes the utility model and its embodiments in a schematic manner, and the description is not restrictive, and the drawings only show one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired thereby, without departing from the creative concept of the utility model, similar structural modes and embodiments are designed without creativity, and all should belong to the protection scope of the utility model.

Claims

1. A roller end shaft sleeve assembly, comprising a roller end shaft sleeve (1) and a connecting disc (2), the roller end shaft sleeve (1) and the connecting disc (2) being connected by a first connecting member (3), the connecting disc (2) being provided with a shaft head (21) connected with a roller shaft, an outer circle of the shaft head (21) being sleeved with a distance ring (5), an end cover (6) being provided outside the distance ring (5), the end cover (6) and the shaft head (21) being connected by a second connecting member (7), so that the distance ring (5) is limited between the end cover (6) and the connecting disc (2). characterized in that The first connecting member (3) is one or more and is circumferentially arranged on the connecting disc (2); the second connecting member (7) is one or more and is circumferentially arranged on the end cover (6).

2. The roll end bushing assembly of claim 1, wherein, The distance ring (5) is axially provided with at least one second exhaust hole (51), the shaft head (21) of the connecting disc (2) is axially provided with at least one first exhaust hole (22), the first exhaust hole (22) and the second exhaust hole (51) are in corresponding relationship in the axial direction.

3. The roll end bushing assembly of claim 1, wherein, A ring groove (23) is arranged on the mating surface of the connecting disc (2) and the distance ring (5), the ring groove (23) is axially arranged on the outer circle of the connecting disc (2) and is respectively communicated with the first exhaust hole (22) and the second exhaust hole (51).

4. The roll end bushing assembly of claim 3, wherein, The angle between the connecting disc (2) and the shaft head (21) is an angle with an arc surface, and the angle is located in the cavity of the ring groove (23).

5. The roll end bushing assembly of claim 4 wherein, The first connecting member (3) comprises a bolt (31), the end of the bolt (31) is provided with a washer (32) and a snap ring (33).

6. The roll end bushing assembly of claim 1, wherein, The second connecting member (7) is a bolt, the end cover (6) and the shaft head (21) are connected by the second connecting member (7).

7. The roll end bushing assembly of claim 1 wherein, The mating surface of the roller end shaft sleeve (1) and the connecting disc (2) is provided with a sealing ring (4).

8. The roll end bushing assembly of claim 1, wherein, ​

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