Slip ring and slip shaft

Abstract

The utility model relates to the technical field of slip shafts, in particular to a slip ring and a slip shaft, the slip ring comprises a sliding sleeve, key grooves are formed in the peripheral wall of the sliding sleeve in the radial direction, the multiple key grooves are distributed in the circumferential direction of the sliding sleeve at intervals, and the sliding sleeve is provided with expansion keys slidably connected to the key grooves in the radial direction; the inner wall of the key groove is provided with an elastic piece which forces the expansion key to slide in the direction away from the axis of the sliding sleeve in the normal state, the peripheral wall of the sliding sleeve is provided with an avoiding annular groove communicated with the key groove in a surrounding mode, the peripheral wall of the expansion key is provided with an anti-disengaging groove, the avoiding annular groove corresponds to the anti-disengaging groove in position, the sliding sleeve is provided with an anti-disengaging ring coaxially arranged on the expansion key in a sleeving mode, and the anti-disengaging ring is clamped in the anti-disengaging groove. And the anti-falling ring is elastically arranged. When the slip ring is integrally assembled, the elastic piece is firstly placed in the key groove, then the expansion key is clamped in the key groove, and finally the anti-falling ring is used for hooping, so that the expansion key is prevented from falling off, the integral structure is simple, and the installation efficiency of the slip shaft is improved.

Description

Technical Field

[0001] This application relates to the technical field of slip shafts, and more particularly to a slip ring and a slip shaft. Background Art

[0002] The slip shaft is a main component of a slitter. A winding drum is sleeved on the slip shaft for winding the materials cut into strips. The quality of the finished products produced by the slitter, the tightness of the coil, the flatness of the end face, etc. are all ensured by the winding of the slip shaft. Generally, a slip ring is installed on the slip shaft in a supporting manner. The existing installation structure of the slip ring is complex, which reduces the installation efficiency of the slip shaft. Therefore, further improvement is needed. Summary of the Utility Model

[0003] In order to improve the installation efficiency of the slip shaft, one of the purposes of this application is to provide a slip ring.

[0004] A slip ring provided by this application adopts the following technical solutions:

[0005] A slip ring includes a sliding sleeve. A keyway is radially formed on the outer peripheral wall of the sliding sleeve. There are multiple keyways and they are circumferentially spaced around the sliding sleeve. The sliding sleeve is provided with expansion keys that are slidably connected to the keyways in the radial direction. An elastic member is provided on the inner wall of the keyway to force the expansion keys to slide away from the axis of the sliding sleeve under normal conditions. An avoidance ring groove communicating with the keyway is formed around the outer peripheral wall of the sliding sleeve. An anti-detachment groove is formed on the outer peripheral wall of the expansion key. The avoidance ring groove and the anti-detachment groove are in corresponding positions. The sliding sleeve is provided with an anti-detachment ring coaxially sleeved on the expansion key. The anti-detachment ring is clamped in the anti-detachment groove, and the anti-detachment ring is elastically arranged.

[0006] By adopting the above technical solutions, the slip ring is provided with a sliding sleeve, expansion keys, an elastic member and an anti-detachment ring. When assembling the whole slip ring, first place the elastic member into the keyway, then clamp the expansion keys in the keyway, and finally tighten them with the anti-detachment ring to prevent the expansion keys from detaching. The overall structure is simple, which improves the installation efficiency of the slip shaft.

[0007] Preferably, the elastic member is a spring piece.

[0008] By adopting the above technical solutions, the slip ring uses a spring piece as the elastic member to force the expansion keys to slide away from the axis of the sliding sleeve under normal conditions, thereby realizing the automatic tightening function of the expansion keys, simplifying the installation process of the slip ring, and improving the installation efficiency.

[0009] Preferably, the spring piece includes a mounting piece abutting against the inner wall of the bottom of the keyway, extension pieces fixedly connected to both ends of the mounting piece, and contact pieces fixedly connected to the ends of the extension pieces away from the mounting piece. The contact pieces abut against the inner wall of the expansion key. A threaded hole is radially formed on the inner wall of the bottom of the keyway along the radial direction of the sliding sleeve. The mounting piece is provided with a bolt threadedly connected to the threaded hole. An avoidance hole for the nut of the bolt to slide and insert is formed on the bottom wall of the expansion key.

[0010] By adopting the above technical solution, the mounting plate is locked to the inner wall of the keyway by bolts, which effectively reduces the possibility of the spring plate coming out and improves the installation efficiency of the differential shaft. The contact plate abuts against the inner wall of the expansion key, so that the spring plate can stably apply force to the expansion key, ensuring the effective expansion of the expansion key.

[0011] Preferably, the elastic member is a spring.

[0012] By adopting the above technical solution, the spring has good elastic recovery performance and is easy to install.

[0013] Preferably, a first mounting hole is opened on the bottom inner wall of the keyway along the radial direction of the sleeve, a second mounting hole is opened on the bottom wall of the expansion key, one end of the spring is embedded in the first mounting hole, and the other end of the spring is embedded in the second mounting hole.

[0014] By adopting the above technical solution, the installation and replacement of the spring are facilitated, and the use stability and maintenance convenience of the differential ring are improved.

[0015] Preferably, the keyway is a strip groove, the length direction of the keyway is parallel to the axial direction of the sleeve, two anti-slip grooves are provided on the same expansion key, the two anti-slip grooves are distributed along the length direction of the expansion key, and two anti-slip rings are correspondingly provided.

[0016] By adopting the above technical solution, the two anti-slip grooves are distributed along the length direction of the expansion key and cooperate with the two anti-slip rings, which can more effectively prevent the expansion key from escaping from the keyway during use, thereby enhancing the overall stability and reliability of the differential ring.

[0017] Preferably, the anti-slip ring is a rubber ring.

[0018] Preferably, bearing holes are formed at both ends of the sliding sleeve, and the sliding sleeve is provided with a bearing body embedded in the bearing holes.

[0019] By adopting the above technical solution, the bearing holes are opened at both ends of the sleeve and the bearing body is embedded, which can effectively improve the rotation accuracy and stability of the differential ring on the differential shaft, reduce the friction and wear of the differential ring during operation, thereby improving the overall performance and service life of the differential shaft.

[0020] In order to improve the installation efficiency of the differential shaft, a second purpose of the present application is to provide a differential shaft.

[0021] A differential shaft comprises a differential ring and a shaft body. The differential rings are provided in plurality and sleeved on the shaft body. The shaft body has an air cavity. The outer peripheral wall of the shaft body is radially provided with a sliding hole connected to the air cavity. The sliding hole is provided in plurality and the number thereof corresponds to the number of the differential rings. The shaft body is provided with a piston which is slidingly connected to the sliding hole. The end of the piston away from the axis of the shaft body abuts against the inner peripheral wall of the sleeve.

[0022] By adopting the above technical solution, during use, the material receiving cylinder is sleeved from one end of the shaft body, and the expansion key will be compressed to the size of the inner diameter of the material receiving cylinder. Due to the reaction force of the elastic member, the expansion key is forced to tighten the material receiving cylinder. At this time, air pressure is introduced into the air cavity of the shaft body, and the piston presses against the inner wall of the sliding sleeve. The greater the air pressure, the greater the static pressure. When the slip shaft rotates, the slip ring rotates relative to the shaft body, and the piston and the sliding sleeve generate sliding friction. As the air pressure increases, the sliding friction received is greater, and thus the winding of the material can be effectively carried out.

[0023] Preferably, locking sleeves are detachably connected to both ends of the shaft body, and the side wall of the locking sleeve abuts against the outer side wall of the outer sliding sleeve.

[0024] By adopting the above technical solution, the locking sleeves are detachably connected to both ends of the shaft body, and the side wall of the locking sleeve can abut against the outer side wall of the outer sliding sleeve, ensuring the stable position of the sliding sleeve on the shaft body, improving the overall structural stability of the slip shaft, and facilitating maintenance and adjustment.

[0025] In summary, the present utility model has the following beneficial effects:

[0026] 1. For the slip ring, by arranging the sliding sleeve, expansion key, elastic member and anti - detachment ring, when assembling the slip ring as a whole, first place the elastic member into the key groove, then clamp the expansion key in the key groove, and finally tighten it with the anti - detachment ring to realize the anti - detachment of the expansion key. The overall structure is simple, improving the installation efficiency of the slip shaft;

[0027] 2. The two anti - detachment grooves are distributed along the length direction of the expansion key and cooperate with the two anti - detachment rings, which can more effectively prevent the expansion key from disengaging from the key groove during use, enhancing the overall stability and reliability of the slip ring;

[0028] 3. During use, the material receiving cylinder is sleeved from one end of the shaft body, and the expansion key will be compressed to the size of the inner diameter of the material receiving cylinder. Due to the reaction force of the elastic member, the expansion key is forced to tighten the material receiving cylinder. At this time, air pressure is introduced into the air cavity of the shaft body, and the piston presses against the inner wall of the sliding sleeve. The greater the air pressure, the greater the static pressure. When the slip shaft rotates, the slip ring rotates relative to the shaft body, and the piston and the sliding sleeve generate sliding friction. As the air pressure increases, the sliding friction received is greater, and thus the winding of the material can be effectively carried out. Description of the Drawings

[0029] Figure 1 is the overall structural schematic diagram of a slip shaft in Embodiment 1;

[0030] Figure 2 is the connection structural schematic diagram of the shaft body and the slip ring in Embodiment 1;

[0031] Figure 3 is the structural schematic diagram of the slip ring in Embodiment 1;

[0032] Figure 4 It is a schematic structural diagram of the elastic member in Embodiment 1;

[0033] Figure 5 It is a schematic structural diagram of the elastic member in Embodiment 2.

[0034] In the figure, 1 is the shaft body; 11 is the air cavity; 12 is the sliding hole; 13 is the piston; 14 is the locking sleeve; 15 is the spacer ring; 2 is the sliding sleeve; 21 is the keyway; 22 is the avoidance ring groove; 23 is the threaded hole; 24 is the bearing hole; 25 is the bearing body; 26 is the elastic piece; 261 is the mounting piece; 262 is the extension piece; 263 is the contact piece; 264 is the bolt; 27 is the first mounting hole; 28 is the spring; 3 is the expansion key; 31 is the anti - detachment groove; 32 is the anti - detachment ring; 33 is the avoidance hole; 34 is the second mounting hole. Detailed implementation manners

[0035] The following further elaborates on this application in conjunction with the attached Figures 1-5 drawings for a more detailed description.

[0036] Embodiment 1:

[0037] This application embodiment discloses a slip shaft. Referring to Figure 1 、 Figure 2 , it includes a shaft body 1 and a plurality of slip rings. The slip rings are sleeved on the shaft body 1 and the shaft body 1 and the slip rings can rotate relative to each other. Locking sleeves 14 are detachably connected to both ends of the shaft body 1. The side wall of the locking sleeve 14 abuts against the outer side wall of the outermost slip ring, and the outer diameter of the locking sleeve 14 is smaller than the outer diameter of the slip ring. In this embodiment, after the locking sleeve 14 is slidably sleeved on the shaft body 1, screws are passed through the outer peripheral wall of the locking sleeve 14 and the screws are threadedly connected to the shaft body 1, thereby realizing the installation of the locking sleeve 14 and the shaft body 1.

[0038] The shaft body 1 has an air cavity 11. A plurality of sliding holes 12 communicating with the air cavity 11 are radially formed on the outer peripheral wall of the shaft body 1. The number of the sliding holes 12 corresponds to the number of the slip rings. The shaft body 1 is provided with a piston 13 slidably connected to the sliding holes 12. One end of the piston 13 away from the axis of the shaft body 1 abuts against the inner peripheral wall of the slip ring. A spacer ring 15 is sleeved on the shaft body 1 between two adjacent slip rings.

[0039] Referring to Figure 3 、 Figure 4, the slip ring includes a sliding sleeve 2 slidably sleeved on the shaft body 1. A key groove 21 is radially formed on the outer peripheral wall of the sliding sleeve 2. There are multiple key grooves 21, which are circumferentially spaced around the sliding sleeve 2. The key groove 21 is a strip-shaped groove, and the length direction of the key groove 21 is parallel to the axial direction of the sliding sleeve 2. The sliding sleeve 2 is provided with an expansion key 3 slidably connected to the key groove 21 in the radial direction, and an elastic member is provided on the inner wall of the key groove 21 to force the expansion key 3 to slide away from the axis of the sliding sleeve 2 under normal conditions. In this embodiment, the elastic member is a spring piece 26. The spring piece 26 includes a mounting piece 261 abutting against the bottom inner wall of the key groove 21, extension pieces 262 fixedly connected to both ends of the mounting piece 261, and a contact piece 263 fixedly connected to the end of the extension piece 262 away from the mounting piece 261. The contact piece 263 abuts against the inner wall of the expansion key 3 close to the axis of the sliding sleeve 2. A threaded hole 23 is radially formed on the bottom inner wall of the key groove 21 along the radial direction of the sliding sleeve 2. The mounting piece 261 is provided with a bolt 264 threadedly connected to the threaded hole 23, and an avoidance hole 33 for the nut of the bolt 264 to slidably insert is formed on the bottom wall of the expansion key 3.

[0040] An avoidance ring groove 22 communicating with the key groove 21 is circumferentially formed on the outer peripheral wall of the sliding sleeve 2. An anti-disengagement groove 31 is formed on the outer peripheral wall of the expansion key 3, and the positions of the avoidance ring groove 22 and the anti-disengagement groove 31 correspond to each other. The sliding sleeve 2 is provided with an anti-disengagement ring 32 coaxially sleeved on the expansion key 3. The anti-disengagement ring 32 is clamped in the anti-disengagement groove 31. The anti-disengagement ring 32 is elastically arranged. Specifically, the anti-disengagement ring 32 is a rubber ring. There are two anti-disengagement grooves 31 on the same expansion key 3, and the two anti-disengagement grooves 31 are distributed along the length direction of the expansion key 3. Correspondingly, there are two anti-disengagement rings 32.

[0041] Bearing holes 24 are formed at both ends of the sliding sleeve 2, and the sliding sleeve 2 is provided with a bearing body 25 embedded in the bearing holes 24. In this embodiment, the outer ring of the bearing body 25 is in interference fit with the bearing holes 24. The outer end face of the bearing body 25 is flush with the outer end face of the sliding sleeve 2.

[0042] The implementation principle of a slip shaft in an embodiment of the present application is as follows: By setting the sliding sleeve 2, the expansion key 3, the elastic member and the anti-disengagement ring 32 on the slip ring, when assembling the slip ring as a whole, first place the elastic member into the key groove 21, then clamp the expansion key 3 in the key groove 21, and finally tighten it through the anti-disengagement ring 32 to achieve the anti-disengagement of the expansion key 3. The overall structure is simple, which improves the installation efficiency of the slip shaft. Then, the slip rings are installed on the shaft body 1 one by one.

[0043] During use, the material receiving cylinder is sleeved onto one end of the shaft body 1. The expansion key 3 will be compressed to the size of the inner diameter of the material receiving cylinder. Due to the reaction force of the elastic member, the expansion key 3 is forced to tighten the material receiving cylinder. At this time, air pressure is introduced into the air cavity 11 of the shaft body 1, and the piston 13 presses against the inner wall of the sliding sleeve 2. The greater the air pressure, the greater the static pressure. When the slip shaft rotates, the slip ring rotates relative to the shaft body 1, and the piston 13 and the sliding sleeve 2 generate a sliding friction force. As the air pressure increases, the sliding friction force received is greater, and thus the winding of the material can be effectively carried out.

[0044] Embodiment 2:

[0045] The difference from Embodiment 1 is that with reference to Figure 5 , a first installation hole 27 is formed in the bottom inner wall of the keyway 21 along the radial direction of the sliding sleeve 2, a second installation hole 34 is formed in the bottom wall of the expansion key 3, the elastic member is a spring 28, one end of the spring 28 is embedded in the first installation hole 27, and the other end of the spring 28 is embedded in the second installation hole 34.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A slip ring, characterized in that: It includes a sliding sleeve (2). A keyway (21) is radially formed on the outer peripheral wall of the sliding sleeve (2). There are multiple keyways (21) which are circumferentially spaced around the sliding sleeve (2). The sliding sleeve (2) is provided with expansion keys (3) slidably connected to the keyways (21) in the radial direction. An elastic member is provided on the inner wall of the keyway (21) to force the expansion key (3) to slide away from the axis of the sliding sleeve (2) under normal conditions. An avoidance ring groove (22) communicating with the keyway (21) is circumferentially formed on the outer peripheral wall of the sliding sleeve (2). An anti - detachment groove (31) is formed on the outer peripheral wall of the expansion key (3). The avoidance ring groove (22) and the anti - detachment groove (31) are in corresponding positions. The sliding sleeve (2) is provided with an anti - detachment ring (32) coaxially sleeved on the expansion key (3). The anti - detachment ring (32) is clamped in the anti - detachment groove (31), and the anti - detachment ring (32) is elastically arranged.

2. The slip ring according to claim 1, characterized in that: The elastic member is a spring piece (26).

3. The slip ring according to claim 2, characterized in that: The spring piece (26) includes a mounting piece (261) abutting against the bottom inner wall of the keyway (21), extension pieces (262) fixedly connected to both ends of the mounting piece (261), and a contact piece (263) fixedly connected to the end of the extension piece (262) away from the mounting piece (261). The contact piece (263) abuts against the inner wall of the expansion key (3). A threaded hole (23) is radially formed on the bottom inner wall of the keyway (21) along the radial direction of the sliding sleeve (2). A bolt (264) threadedly connected to the threaded hole (23) is passed through the mounting piece (261). An avoidance hole (33) for the nut of the bolt (264) to slidably insert is formed on the bottom wall of the expansion key (3).

4. A slip ring according to claim 1, characterized in that: The elastic member is a spring (28).

5. A slip ring according to claim 4, characterized in that: A first mounting hole (27) is radially formed on the bottom inner wall of the keyway (21) along the radial direction of the sliding sleeve (2). A second mounting hole (34) is formed on the bottom wall of the expansion key (3). One end of the spring (28) is embedded in the first mounting hole (27), and the other end of the spring (28) is embedded in the second mounting hole (34).

6. A slip ring according to claim 1, wherein: The keyway (21) is a strip - shaped groove. The length direction of the keyway (21) is parallel to the axial direction of the sliding sleeve (2). There are two anti - detachment grooves (31) on the same expansion key (3), and the two anti - detachment grooves (31) are distributed along the length direction of the expansion key (3). Correspondingly, there are two anti - detachment rings (32).

7. A slip ring according to claim 1, characterized in that: The anti - detachment ring (32) is a rubber ring.

8. A slip ring according to claim 1, characterized in that: Bearing holes (24) are formed at both ends of the sliding sleeve (2). The sliding sleeve (2) is provided with a bearing body (25) embedded in the bearing holes (24).

9. A slip shaft, characterized in that: It includes a slip - difference ring as described in any one of claims 1 - 8, and also includes a shaft body (1). There are multiple slip - difference rings sleeved on the shaft body (1). The shaft body (1) has an air cavity (11). A sliding hole (12) communicating with the air cavity (11) is radially formed on the outer peripheral wall of the shaft body (1). There are multiple sliding holes (12) corresponding to the number of slip - difference rings. The shaft body (1) is provided with a piston (13) slidably connected to the sliding hole (12). One end of the piston (13) away from the axis of the shaft body (1) abuts against the inner peripheral wall of the sliding sleeve (2).

10. A slip shaft according to claim 9, characterized in that: Locking sleeves (14) are detachably connected to both ends of the shaft body (1). The side wall of the locking sleeve (14) abuts against the outer side wall of the outermost sliding sleeve (2).

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