Shaft sleeve convenient to install

Abstract

The shaft sleeve convenient to install comprises four arc-shaped pieces used for forming the shaft sleeve, four sliding blocks and a locking piece, the four sliding blocks correspond to the four arc-shaped pieces in a one-to-one mode, the sliding blocks are arranged on the arc-shaped pieces, and the locking piece is arranged on the arc-shaped pieces. The sliding blocks are connected to the adjacent arc-shaped pieces in a sliding mode in the tangential direction of the corresponding arc-shaped pieces, and the locking pieces are used for keeping the arc-shaped pieces in a mutual abutting state. The shaft sleeve has the effect of reducing abrasion between the shaft sleeve and the main shaft during installation.

Description

Technical Field

[0001] The present application relates to the field of shaft sleeves, and in particular to a shaft sleeve that is easy to install. Background Art

[0002] As a mechanical component, the bushing is widely used in engineering machinery. During the installation process, pressing and hammering are often used. Most bushings are made of copper or cast iron. Since the bushing and the main shaft are in a transition fit or interference fit, when the bushing is installed on the main shaft, it is difficult for the main shaft and the bushing to remain coaxial. The inner wall of the bushing is easily scratched by the main shaft, and a gap is generated between the bushing and the main shaft, thereby accelerating the wear of the bushing. Therefore, a bushing that is easy to install is needed. Utility Model Content

[0003] In order to reduce the wear between the shaft sleeve and the main shaft during installation, the present application provides a shaft sleeve that is easy to install.

[0004] The present application provides a shaft sleeve that is easy to install, which adopts the following technical solution:

[0005] A shaft sleeve that is easy to install includes four arc-shaped pieces for forming the shaft sleeve, four sliding blocks and a locking piece. The four sliding blocks correspond to the four arc-shaped pieces one by one. The sliding blocks are arranged on the arc-shaped pieces. The sliding blocks are slidably connected to adjacent arc-shaped pieces along the tangent direction of the corresponding arc-shaped pieces. The locking piece is used to keep the arc-shaped pieces in a state of abutting each other.

[0006] By adopting the above technical solution, since the four arc pieces can slide through the sliding block, the distance between the four arc pieces can be changed. When the main shaft needs to install the sleeve, the staff can move the four arc pieces away from each other, and the arc piece sleeve is installed on the main shaft. Then, the four arc pieces are slid closer to each other through the sliding block until the four arc pieces abut against each other. Then, the staff keeps the arc pieces abutting against each other through the locking piece. At this time, the side walls of the arc pieces abut against the main shaft, and the four arc pieces become the sleeves. The sleeves are easy to install, and the sleeves will not scratch the main shaft during the installation process, which further improves the quality of the sleeves.

[0007] Optionally, the locking member includes four locking arc plates and a locking ring, the four locking arc plates correspond one-to-one to the four arc sheets, the locking arc plates are coaxially arranged with the arc sheets, the locking arc plates are arranged on the arc sheets, and the locking ring is threadedly connected to the outer wall of the locking arc plates.

[0008] By adopting the above technical solution, when the staff moves the four arc-shaped pieces to abut against each other, the four locking arc-shaped plates also approach each other until they abut against each other, and the four locking arc-shaped plates form a circular ring shape. The staff then threadably connects the locking ring with the locking arc-shaped plate, and the arc-shaped pieces remain in a state of abutting against each other. The four arc-shaped pieces form a sleeve that acts on the main shaft, and the locking piece has a simple structure, which is convenient for the staff to operate.

[0009] Optionally, the locking arc plate is arranged on the end surface of the arc piece, and the diameter of the outer arc surface of the locking arc plate gradually increases along the direction from the locking arc plate to the arc piece.

[0010] By adopting the above technical scheme, it is difficult for the staff to keep the four locking arc plates in abutment state without the locking ring. It is easier to bring the four locking arc plates closer to each other. Since the locking arc plates have variable diameters, it is convenient for the staff to put the locking ring on the four locking arc plates and rotate the locking ring to gradually bring the four locking arc plates closer until the locking arc plates abut against each other and the arc plates abut against the outer wall of the main shaft. The shape of the locking arc plates is more reasonable, which is convenient for the staff to operate.

[0011] Optionally, two locking pieces are included, and the two locking pieces are respectively located on the two end surfaces of the arc-shaped piece, and the threads on the locking arc-shaped plates of different locking pieces have the same rotation direction.

[0012] By adopting the above technical solution, the two locking parts can make the force on the arc piece uniform, and the same rotation direction on the locking arc plate will cause the locking ring to rotate in the opposite direction when it needs to be tightened, which is convenient for the staff to apply force to the locking ring at the same time and tighten the two locking rings at the same time. The staff does not need to hold the arc piece, further reducing the deformation of the arc piece.

[0013] Optionally, the outer side wall of the locking ring is provided with a plurality of clamping planes for facilitating tool clamping.

[0014] By adopting the above technical solution, the clamping plane is convenient for the staff to use clamping tools such as flat-nose pliers, wrenches, etc. to clamp the locking ring, and the locking ring has a reasonable structure and is convenient for the staff to operate.

[0015] Optionally, the inner side wall of the arc-shaped piece is provided with a flow channel for the flow of lubricating oil, and the flow channel includes a longitudinal flow channel and a transverse flow channel, the longitudinal flow channel is parallel to the axis of the arc-shaped piece, and the transverse flow channel extends circumferentially along the inner side wall of the arc-shaped piece, and the longitudinal flow channel is connected to the transverse flow channel.

[0016] By adopting the above technical solution, the flow channel is used for the flow of lubricating oil, and the longitudinal flow channel and the transverse flow channel increase the contact area between the lubricating oil and the main shaft, thereby increasing the service life of the shaft sleeve composed of the arc-shaped sheets.

[0017] Optionally, a cavity for adding lubricating oil is provided in the arc-shaped sheet, and the cavity is connected to the transverse flow channel of the corresponding arc-shaped sheet. When several arc-shaped sheets abut against each other, the cavities in several arc-shaped sheets are connected to each other, and an oil inlet hole is provided on the outer wall of one of the arc-shaped sheets, and the oil inlet hole is connected to the cavity, and the oil inlet hole is sealed by a sealing bolt.

[0018] By adopting the above technical solution, part of the lubricating oil will be consumed during the relative rotation between the main shaft and the arc-shaped piece, so it is necessary to regularly add lubricating oil to the flow channel. The staff can unscrew the sealing bolt to expose the oil inlet hole, and then the staff will add lubricating oil into the cavity through the oil inlet hole. The lubricating oil in the cavity can enter the transverse flow channel, and the transverse flow channel and the longitudinal flow channel are refilled with lubricating oil, thereby increasing the service life of the sleeve.

[0019] Optionally, a countersunk hole is provided on the oil inlet hole, and the head of the sealing bolt is located in the countersunk hole.

[0020] By adopting the above technical solution, the countersunk hole is used to reduce the protrusion of the head of the sealing bolt and keep the surface of the shaft sleeve formed by the arc-shaped sheet flat.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The four arc-shaped pieces can slide against each other through the sliding block, and the four arc-shaped pieces can be kept in contact with each other through the locking piece, thereby reducing the wear on the main shaft during the installation of the sleeve;

[0023] 2. The two locking pieces make the forces on both ends of the shaft sleeve formed by the arc-shaped piece balanced, and the inner wall of the shaft sleeve formed by the arc-shaped piece can be close to the main shaft;

[0024] 3. The flow channel can contain lubricating oil, which reduces the friction between the arc piece and the main shaft and prolongs the life of the arc piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a shaft sleeve that is easy to install.

[0026] Figure 2 yes Figure 1 A cross-sectional view of the middle arc piece, used to show the cavity inside the arc piece.

[0027] Figure 3 yes Figure 2 Schematic diagram of the inner arc surface of the middle arc piece, used to show the flow channel.

[0028] Figure numerals: 1, arc-shaped sheet; 11, sliding groove; 12, limiting groove; 13, cavity; 2, sliding block; 21, sliding rod; 22, limiting block; 3, locking piece; 31, locking arc-shaped plate; 32, locking ring; 33, clamping plane; 4, flow channel; 41, longitudinal flow channel; 42, transverse flow channel; 5, oil inlet hole; 51, countersunk hole; 52, sealing bolt. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The present application embodiment discloses a shaft sleeve that is easy to install. Figure 1 and Figure 2 A shaft sleeve convenient for installation comprises four arc-shaped pieces 1, four sliding blocks 2 and two locking pieces 3. The four arc-shaped pieces 1 are evenly distributed along the circumferential direction of the axis of the main shaft. The four sliding blocks 2 correspond to the four arc-shaped pieces 1 one by one. The sliding blocks 2 are located on the side walls of the arc-shaped pieces 1. The sliding blocks 2 comprise a sliding rod 21 and two limit blocks 22. The length direction of the sliding rod 21 is parallel to the tangent direction of the arc-shaped piece 1. One end of the sliding rod 21 is fixedly arranged on the side wall of the arc-shaped piece 1. The two limit blocks 22 are distributed along the axial direction of the arc-shaped piece 1. The two limit blocks 22 Located on both sides of the sliding rod 21, a sliding groove 11 is provided at one end of the arc-shaped piece 1 away from the sliding block 2, and the sliding groove 11 extends in the tangential direction of the arc-shaped piece 1. The sliding groove 11 has limiting grooves 12 on both side walls along the length direction of the arc-shaped piece 1. The extension direction of the limiting groove 12 is parallel to the extension direction of the sliding groove 11. The sliding block 2 is slidingly connected in the sliding groove 11 of the adjacent arc-shaped piece 1, and the two limiting blocks 22 on the corresponding sliding block 2 correspond one-to-one to the two limiting grooves 12 on the side wall of the corresponding sliding groove 11, and the limiting block 22 is slidingly connected in the limiting groove 12.

[0031] Reference Figure 2 and Figure 3 A flow channel 4 is provided on the inner wall of the arc-shaped piece 1, and the flow channel 4 includes three longitudinal flow channels 41 and three transverse flow channels 42. The three longitudinal flow channels 41 are evenly distributed along the circumferential direction of the axis of the arc-shaped piece 1, and the longitudinal flow channel 41 extends along the axial direction of the arc-shaped piece 1. The three transverse flow channels 42 are evenly distributed along the axial direction of the arc-shaped piece 1, and the transverse flow channel 42 extends along the arc direction of the arc-shaped piece 1. The transverse flow channel 42 is connected with the longitudinal flow channel 41. A cavity 13 is provided in the arc-shaped piece 1, and one end of the cavity 13 passes through the sliding rod 21, and the other end of the cavity 13 is connected with the sliding groove 11, and the cavity 13 is connected with the flow channel 4.

[0032] Reference Figure 1 and Figure 2An oil inlet hole 5 is provided on the outer wall of one of the arc-shaped sheets 1. The oil inlet hole 5 extends in the radial direction of the arc-shaped sheet 1. The oil inlet hole 5 is communicated with the cavity 13. A countersunk hole 51 is provided on the oil inlet hole 5. The countersunk hole 51 extends in the extension direction of the oil inlet hole 5. The diameter of the countersunk hole 51 is larger than the diameter of the oil inlet hole 5. The oil inlet hole 5 is threadedly connected by a sealing bolt 52. The head of the sealing bolt 52 is located in the countersunk hole 51. The sealing bolt 52 is a hexagon socket bolt.

[0033] Reference Figure 1 and Figure 3 The two locking members 3 are distributed along the axial direction of the arc-shaped piece 1. The two locking members 3 are respectively located on both sides of the arc-shaped piece 1. The locking members 3 include four locking arc plates 31 and a locking ring 32. The four locking arc plates 31 correspond to the four arc-shaped pieces 1 one by one. The locking arc plates 31 are coaxially arranged with the arc-shaped piece 1. The locking arc plates 31 are fixedly arranged on the end surface of the arc-shaped piece 1. The diameter of the outer wall of the locking arc plate 31 gradually increases along the direction from the locking arc plate 31 to the arc-shaped piece 1. The locking arc plate 32 is fixedly arranged on the end surface of the arc-shaped piece 1. 1 is provided with a thread groove, and the thread grooves of the locking arc plates 31 in the two locking members 3 have the same rotation direction. When the four arc pieces 1 abut against each other, the corresponding four locking arc plates 31 abut against each other to form a circular ring. The locking ring 32 is coaxially arranged with the circular ring formed by the four locking arc plates 31. The locking ring 32 is threadedly connected to the outer wall of the locking arc plate 31. The outer wall of the locking ring 32 is provided with six clamping planes 33, and the six clamping planes 33 are evenly distributed circumferentially along the axis of the locking ring 32.

[0034] The implementation principle of an easy-to-install shaft sleeve in an embodiment of the present application is as follows: the staff first sleeves four arc pieces 1 on the main shaft to be installed, and then the staff brings the four arc pieces 1 close to each other, and then simultaneously sleeves two locking rings 32 on the locking arc plates 31 on both sides of the arc pieces 1, and then the staff clamps the clamping planes 33 of the locking rings 32 through a clamping tool, and then the staff rotates the two locking rings 32 in opposite directions, and the locking rings 32 are threadedly connected to the locking arc plates 31 until the arc piece 1 abuts against the main shaft, and the arc piece 1 constitutes a completed shaft sleeve installed on the main shaft.

[0035] When the sleeve needs to be lubricated, the staff can first unscrew the sealing bolt 52 to expose the oil inlet hole 5, and pass the lubricating oil into the cavity 13. The lubricating oil enters the transverse flow channel 42 and the longitudinal flow channel 41 through the cavity 13, and the lubricating oil can enter between the arc piece 1 and the main shaft. After the oiling is completed, the sealing bolt 52 is tightened in the oil inlet hole 5, and the head of the sealing bolt 52 is located in the countersunk hole 51.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A shaft sleeve that is easy to install, characterized in that: The invention comprises four arc-shaped pieces (1) for forming a shaft sleeve, four sliding blocks (2) and a locking piece (3), wherein the four sliding blocks (2) correspond to the four arc-shaped pieces (1) one by one, the sliding blocks (2) are arranged on the arc-shaped pieces (1), the sliding blocks (2) are slidably connected to adjacent arc-shaped pieces (1) along the tangent direction corresponding to the arc-shaped pieces (1), and the locking piece (3) is used to keep the arc-shaped pieces (1) in a mutually abutting state.

2. A shaft sleeve that is easy to install according to claim 1, characterized in that: The locking member (3) comprises four locking arc plates (31) and a locking ring (32), the four locking arc plates (31) corresponding to the four arc sheets (1) one by one, the locking arc plates (31) being coaxially arranged with the arc sheets (1), the locking arc plates (31) being arranged on the arc sheets (1), and the locking ring (32) being threadedly connected to the outer side wall of the locking arc plates (31).

3. A shaft sleeve that is easy to install according to claim 2, characterized in that: The locking arc plate (31) is arranged on the end surface of the arc piece (1), and the diameter of the outer arc surface of the locking arc plate (31) gradually increases along the direction from the locking arc plate (31) to the arc piece (1).

4. A shaft sleeve that is easy to install according to claim 3, characterized in that: It comprises two locking pieces (3), the two locking pieces (3) are respectively located on the two end surfaces of the arc-shaped sheet (1), and the thread rotation directions on the locking arc-shaped plates (31) of different locking pieces (3) are the same.

5. The easy-to-install sleeve according to claim 2, characterized in that: The outer side wall of the locking ring (32) is provided with a plurality of clamping planes (33) for facilitating tool clamping.

6. The easy-to-install sleeve according to claim 1, characterized in that: The inner wall of the arc-shaped sheet (1) is provided with a flow channel (4) for the flow of lubricating oil, the flow channel (4) comprising a longitudinal flow channel (41) and a transverse flow channel (42), the longitudinal flow channel (41) being parallel to the axis of the arc-shaped sheet (1), the transverse flow channel (42) extending circumferentially along the inner wall of the arc-shaped sheet (1), and the longitudinal flow channel (41) being connected to the transverse flow channel (42).

7. A shaft sleeve that is easy to install according to claim 6, characterized in that: A cavity (13) for adding lubricating oil is provided in the arc-shaped sheet (1), and the cavity (13) is communicated with the transverse flow channel (42) of the corresponding arc-shaped sheet (1). When a plurality of the arc-shaped sheets (1) are in contact with each other, the cavities (13) in the plurality of the arc-shaped sheets (1) are communicated with each other. An oil inlet hole (5) is provided on the outer wall of one of the arc-shaped sheets (1), and the oil inlet hole (5) is communicated with the cavity (13). The oil inlet hole (5) is sealed by a sealing bolt (52).

8. The easy-to-install sleeve according to claim 7, characterized in that: The oil inlet hole (5) is provided with a countersunk hole (51), and the head of the sealing bolt (52) is located in the countersunk hole (51).

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