Composite shaft sleeve

Abstract

The composite shaft sleeve comprises an inner shaft sleeve and an outer shaft sleeve, the inner shaft sleeve is sleeved with the outer shaft sleeve, the inner wall of the inner shaft sleeve is connected with a plurality of balls, a first cavity is formed in the inner shaft sleeve, an oil storage piece is arranged in the first cavity, one side of each ball is connected with the oil storage piece, and the oil storage piece is used for storing lubricating oil and outputting the lubricating oil to the balls. In the using process, the oil storage piece outputs lubricating oil to the balls, so that friction force between the shaft sleeve and the shaft is reduced, abrasion of the shaft sleeve is reduced, the lubricating oil is stored in the first cavity and the oil storage piece, the lubricating oil supplementing frequency of operators is reduced, and the using experience feeling is improved.

Description

Technical Field

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

[0002] The sleeve is a cylindrical mechanical part that is sleeved on the rotating shaft and is a component of the sliding bearing.

[0003] A Chinese patent with authorization announcement number CN105972084A discloses a sleeve, comprising a sleeve body, an oil groove and an oil filling hole; the oil groove is arranged on the inner surface of the sleeve and extends inward from one end of the sleeve body to a position close to the other end of the sleeve body, the oil filling hole is evenly distributed on the outer surface of the sleeve body in the same longitudinal extension direction and penetrates one side of the sleeve body, a gasket and a screw are arranged in the oil filling hole, the length of the screw is less than the thickness of the sleeve body, and a wear-resistant coating is arranged on the inner surface of the sleeve body.

[0004] With regard to the above-mentioned related technologies, lubricating oil is input into the oil tank through the oil filling hole. When the lubricating oil is consumed, the operator is required to add lubricating oil regularly. Since the space for storing lubricating oil in the oil tank and the oil filling hole is small, the operation is more frequent, and thus the user experience is poor. Utility Model Content

[0005] In order to reduce the frequency of operators adding lubricating oil and improve user experience, the present application provides a composite sleeve.

[0006] The composite sleeve provided in this application adopts the following technical solution:

[0007] A composite sleeve comprises an inner sleeve and an outer sleeve, wherein the outer sleeve is sleeved on the inner sleeve, the central axis of the outer sleeve is colinear with the central axis of the inner sleeve, a plurality of balls are connected to the inner wall of the inner sleeve, a first cavity is provided in the inner sleeve, an oil storage part is provided in the first cavity, one side of the ball is connected to the oil storage part, and the oil storage part is used to store lubricating oil and output the lubricating oil to the ball.

[0008] By adopting the above technical solution, during use, the oil storage member outputs lubricating oil to the ball bearings, thereby reducing the friction between the sleeve and the shaft and reducing the wear of the sleeve. The lubricating oil is stored in the first cavity and the oil storage member, reducing the frequency of operators replenishing the lubricating oil and improving the user experience.

[0009] Optionally, the oil storage member is provided as an oil seepage ring, the central axis of the oil seepage ring is colinear with the central axis of the inner sleeve, the oil seepage ring is made of sponge rubber material, the outer wall of the outer sleeve is connected to an oil pipe, and the oil pipe is connected to the first cavity.

[0010] By adopting the above technical solution, the lubricating oil enters the first cavity through the oil pipe, and the oil seepage ring is filled with the lubricating oil, and the lubricating oil penetrates through the oil seepage ring to the surface of the ball. When the sleeve rotates, the ball rolls, thereby further reducing the friction between the sleeve and the shaft.

[0011] Optionally, a sealing cap is provided on the threaded sleeve at one end of the oil delivery pipe away from the outer sleeve.

[0012] By adopting the above technical solution and adding a sealing cover, leakage of lubricating oil after refueling the oil seepage ring can be avoided as much as possible, and impurities can be avoided from entering the first cavity through the oil delivery pipe after refueling.

[0013] Optionally, a plurality of extrusion openings are provided on the outer wall of the inner sleeve, and the plurality of extrusion openings are spaced in sequence along the circumference of the inner sleeve, and the extrusion openings are connected to the first cavity. A plurality of mounting grooves are provided on the inner wall of the outer sleeve, and the mounting grooves correspond to the extrusion openings one by one. The length direction of the mounting grooves is consistent with the radial direction of the outer sleeve, and the plurality of mounting grooves are spaced in sequence along the outer sleeve, and the extrusion openings connect the first cavity and the mounting grooves. An extrusion piece is connected in the mounting groove, and the extrusion piece is used to extrude the oil seepage ring.

[0014] By adopting the above technical solution, when in use, the extrusion piece squeezes the oil seepage ring, thereby facilitating the lubricating oil to penetrate from the oil seepage ring into the ball.

[0015] Optionally, the extrusion part includes a spring and a pressure block. The length direction of the spring is consistent with the radial direction of the outer sleeve. One end of the spring along its length direction is connected to the mounting groove, and the other end of the spring is connected to the pressure block. The pressure block is connected to the mounting groove along the radial sliding direction of the outer sleeve. When the pressure block contacts the oil seepage ring, the spring is squeezed and deformed.

[0016] By adopting the above technical solution, when in use, the spring is squeezed and deformed. Since the spring is elastic, the spring drives the pressure block to press against the oil seepage ring, so that the pressure block squeezes the oil seepage ring, thereby accelerating the speed at which the lubricating oil penetrates from the oil seepage ring to the ball.

[0017] Optionally, a side of the pressing block close to the permeable ring is provided with an arcuate surface, the concave arcuate surface of the arcuate surface faces the oil seepage ring, and the arcuate surface fits with the outer wall of the oil seepage ring.

[0018] By adopting the above technical solution, the arc surface fits against the outer wall of the oil seepage ring, thereby increasing the contact area between the pressing block and the oil seepage ring, and further accelerating the penetration speed of the lubricating oil.

[0019] Optionally, the outer sleeve is slidably mounted on the inner sleeve, and the outer sleeve is detachably connected to the inner sleeve via bolts.

[0020] By adopting the above technical solution, the outer sleeve can be detachably connected to the inner sleeve. When one of the inner sleeve or the outer sleeve is damaged, the cost can be reduced by replacing one of them.

[0021] Optionally, the outer wall of the inner sleeve is connected to a limiting strip, the length direction of the limiting strip is consistent with the length direction of the inner sleeve, the inner wall of the outer sleeve is provided with a limiting groove, the length direction of the limiting groove is consistent with the length direction of the outer sleeve, and the limiting strip is slidably connected in the limiting groove along its length direction.

[0022] By adopting the above technical solution, when the outer sleeve is installed on the inner sleeve, the limit strip is slidably connected in the limit groove along its length direction, so as to facilitate the positioning of the extrusion piece and the extrusion port and avoid the deviation of the position of the pressing block and the extrusion port as much as possible.

[0023] Optionally, a reinforcing rod is connected to the first cavity, the length direction of the reinforcing rod is consistent with the radial direction of the inner sleeve, and the two ends of the reinforcing rod along the length direction are respectively connected to the corresponding side inner walls of the first cavity.

[0024] By adopting the above technical solution and adding a reinforcing rod, the structural stability of the inner sleeve is improved.

[0025] Optionally, the inner wall of the inner sleeve is connected to a wear-resistant layer, the wear-resistant layer is made of a chromium carbide composite material or a high-toughness cemented carbide material, and one side of the ball passes through the wear-resistant layer.

[0026] By adopting the above technical solution, a wear-resistant layer is added to reduce the wear of the inner sleeve.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. During use, the oil storage member outputs lubricating oil to the ball bearings, thereby reducing the friction between the sleeve and the shaft and reducing the wear of the sleeve. The lubricating oil is stored in the first cavity and the oil storage member, which reduces the frequency of operators replenishing lubricating oil and improves the user experience.

[0029] 2. When in use, the spring is squeezed and deformed. Because the spring is elastic, the spring drives the pressure block to press against the oil seepage ring, so that the pressure block squeezes the oil seepage ring, thereby accelerating the speed at which the lubricating oil penetrates from the oil seepage ring to the ball;

[0030] 3. When the outer sleeve is installed on the inner sleeve, the limit strip is slidably connected in the limit groove along its length direction, so as to facilitate the positioning of the extrusion piece and the extrusion port and avoid the deviation of the position of the pressure block and the extrusion port as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural diagram of this embodiment.

[0032] Figure 2 is a cross-sectional view of this embodiment.

[0033] Explanation of the reference numerals: 100, outer sleeve; 110, limit groove; 120, second channel; 130, oil pipeline; 131, sealing cover; 140, mounting groove; 200, inner sleeve; 210, limit strip; 220, first cavity; 221, reinforcing rod; 222, first channel; 230, extrusion port; 240, wear-resistant layer; 300, ball; 400, oil seepage ring; 500, extrusion piece; 510, spring; 520, pressing block. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-2 This application is described in further detail.

[0035] The present application embodiment discloses a composite shaft sleeve. Figure 1 and Figure 2 A composite sleeve includes an inner sleeve 200 and an outer sleeve 100. The outer sleeve 100 is slidably sleeved on the inner sleeve 200. The central axis of the outer sleeve 100 is in line with the central axis of the inner sleeve 200. A plurality of balls 300 are rollingly connected to the inner wall of the inner sleeve 200. The balls 300 are used to contact the shaft. A first cavity 220 is provided in the inner sleeve 200. The first cavity 220 is annularly arranged. The central axis of the first cavity 220 is in line with the central axis of the inner sleeve 200. One side of the ball 300 passes through the inner wall of the first cavity 220 and is arranged in the first cavity 220. An oil storage part is provided in the first cavity 220. One side of the ball 300 is connected to the oil storage part. The oil storage part is used to store lubricating oil and infiltrate lubricating oil into the ball 300.

[0036] When in use, the lubricating oil penetrates through the oil storage member to the surface of the ball 300, thereby facilitating the addition of the lubricating oil and reducing the wear between the sleeve and the shaft.

[0037] Reference Figure 1 and Figure 2 The inner sleeve 200 is connected to two limit bars 210 on its circumferential side. The two limit bars 210 are arranged on the outer walls of the inner sleeve 200 along its radial sides. The inner wall of the outer sleeve 100 is provided with a limit groove 110. The length direction of the limit groove 110 is consistent with the length direction of the outer sleeve 100. The limit bars 210 are slidably connected to the limit groove 110 along its length direction. The outer sleeve 100 is detachably connected to the inner sleeve 200 by bolts. The bolts pass through the side walls of the limit groove 110 along the radial direction of the outer sleeve 100 and are threadedly connected to the limit bars 210.

[0038] Reference Figure 1 and Figure 2A plurality of reinforcing rods 221 are connected to the first cavity 220. The plurality of reinforcing rods 221 are distributed in the first cavity 220 in sequence along the circumference of the inner sleeve 200, and the length direction of the reinforcing rods 221 is consistent with the radial direction of the inner sleeve 200. The two ends of the reinforcing rods 221 along the length direction are respectively connected to the corresponding side inner walls of the first cavity 220.

[0039] Reference Figure 1 and Figure 2 The oil storage part is provided with an oil seepage ring 400, which is provided as a circular ring, and the reinforcing rod 221 passes through the oil seepage ring 400 along its length direction. The central axis of the oil seepage ring 400 is collinear with the central axis of the inner sleeve 200, and the oil seepage ring 400 is provided with a sponge rubber material. The inner wall of the first cavity 220 close to the outer sleeve 100 is provided with a first channel 222, and the outer sleeve 100 is provided with a second channel 120, and the first channel 222 is connected with the second channel 120, and the first channel 222 connects the second channel 120 with the first cavity 220. The outer wall of the outer sleeve 100 is connected with an oil delivery pipe 130, and the length direction of the oil delivery pipe 130 is connected with the oil delivery pipe 130 in the first cavity 220. A sealing cap 131 is threadedly sleeved on one end of the oil delivery pipe 130 away from the outer sleeve 100, and the central axis of the sealing cap 131 is collinear with the central axis of the oil delivery pipe 130.

[0040] Reference Figure 1 and Figure 2 The outer wall of the inner sleeve 200 is provided with four extrusion openings 230 , which are spaced apart in sequence along the circumference of the inner sleeve 200 , and the extrusion openings 230 are connected to the first cavity 220 . The outer sleeve 100 is connected with an extrusion piece 500 , and the extrusion piece 500 is used to add oil to the oil seepage ring 400 .

[0041] Reference Figure 1 and Figure 2 Four mounting grooves 140 are provided on the inner wall of the outer sleeve 100 , and the four mounting grooves 140 are spaced apart in sequence along the circumference of the outer sleeve 100 . The length direction of the mounting grooves 140 is consistent with the radial direction of the outer sleeve 100 . The mounting grooves 140 correspond one-to-one to the extrusion ports 230 , and the extrusion ports 230 connect the first cavity 220 and the mounting grooves 140 .

[0042] Reference Figure 1 and Figure 2There are four extrusion pieces 500, and the extrusion pieces 500 correspond to the installation grooves 140 one by one. One extrusion piece 500 is connected to one installation groove 140. The extrusion piece 500 includes a spring 510 and a pressing block 520. The length direction of the spring 510 is consistent with the radial direction of the outer sleeve 100. One end of the spring 510 is connected to the inner wall of the installation groove 140 along its length direction, and the other end of the spring 510 is connected to the pressing block 520. The pressing block 520 is connected to the installation groove 140 by sliding along the radial direction of the outer sleeve 100. The pressing block 520 is provided with an arc surface on one side close to the inner sleeve 200, and the concave arc surface of the arc surface is arranged toward the inner sleeve 200, and the arc surface is in contact with the outer wall of the oil seepage ring 400. When in use, the pressing block 520 contacts the oil seepage ring 400, and the spring 510 is deformed by being squeezed. When in use, the spring 510 is squeezed and deformed, and the spring 510 drives the pressing block 520 to press against the oil seepage ring 400, and the pressing block 520 squeezes the oil seepage ring 400, thereby accelerating the seepage of the lubricating oil in the oil seepage ring 400.

[0043] Reference Figure 1 and Figure 2 The inner wall of the inner sleeve 200 is connected with a wear-resistant layer 240, which is arranged in a circular ring, and the central axis of the wear-resistant layer 240 is colinear with the central axis of the inner sleeve 200, and one side of the ball 300 passes through the wear-resistant layer 240 and contacts the shaft. The wear-resistant layer 240 is made of chromium carbide composite material or high-toughness cemented carbide material.

[0044] The implementation principle of a composite sleeve in the embodiment of the present application is as follows: lubricating oil is input into the first cavity 220 through the oil pipe 130, the oil seepage ring 400 is immersed in the lubricating oil, and the first channel 222, the second channel 120, and the oil pipe 130 can store lubricating oil. After the input is completed, the oil pipe 130 is closed through the sealing cover 131. When in use, the spring 510 is deformed by extrusion. Because the spring 510 is elastic, the spring 510 drives the pressure block 520 to press against the oil seepage ring 400, thereby accelerating the oil seepage ring 400 to seep out lubricating oil. The lubricating oil penetrates through the oil seepage ring 400 to the surface of the ball 300, reducing the wear of the inner sleeve 200, and the lubricating oil can be stored in the first cavity 220, the first channel 222, the second channel 120, the oil pipe 130, and the mounting groove 140, reducing the frequency of operators replenishing lubricating oil and improving the user experience.

[0045] 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 composite sleeve, comprising an inner sleeve (200) and an outer sleeve (100), wherein the outer sleeve (100) is sleeved on the inner sleeve (200), and the central axis of the outer sleeve (100) is colinear with the central axis of the inner sleeve (200), characterized in that: A plurality of balls (300) are connected to the inner wall of the inner sleeve (200), a first cavity (220) is provided in the inner sleeve (200), an oil storage part is provided in the first cavity (220), one side of the balls (300) is connected to the oil storage part, and the oil storage part is used to store lubricating oil and output the lubricating oil to the balls (300).

2. A composite sleeve according to claim 1, characterized in that: The oil storage member is provided as an oil seepage ring (400), the central axis of the oil seepage ring (400) is colinear with the central axis of the inner shaft sleeve (200), the oil seepage ring (400) is made of sponge rubber material, the outer wall of the outer shaft sleeve (100) is connected to an oil delivery pipe (130), and the oil delivery pipe (130) is in communication with the first cavity (220).

3. A composite sleeve according to claim 2, characterized in that: A sealing cover (131) is threadedly sleeved on one end of the oil delivery pipe (130) away from the outer shaft sleeve (100).

4. A composite sleeve according to claim 2, characterized in that: The outer wall of the inner sleeve (200) is provided with a plurality of extrusion openings (230), the plurality of extrusion openings (230) are sequentially spaced and distributed along the circumference of the inner sleeve (200), the extrusion openings (230) are connected to the first cavity (220), the inner wall of the outer sleeve (100) is provided with a plurality of mounting grooves (140), the mounting grooves (140) correspond one to one with the extrusion openings (230), the length direction of the mounting grooves (140) is consistent with the radial direction of the outer sleeve (100), the plurality of mounting grooves (140) are sequentially spaced and distributed along the outer sleeve (100), the extrusion openings (230) are connected to the first cavity (220) and the mounting grooves (140), an extrusion piece (500) is connected in the mounting groove (140), and the extrusion piece (500) is used to extrude the oil seepage ring (400).

5. A composite sleeve according to claim 4, characterized in that: The extrusion member (500) comprises a spring (510) and a pressure block (520). The length direction of the spring (510) is consistent with the radial direction of the outer sleeve (100). One end of the spring (510) is connected to the mounting groove (140) along its length direction, and the other end of the spring (510) is connected to the pressure block (520). The pressure block (520) is connected to the mounting groove (140) by sliding along the radial direction of the outer sleeve (100). When the pressure block (520) contacts the oil seepage ring (400), the spring (510) is squeezed and deformed.

6. A composite sleeve according to claim 5, characterized in that: The pressing block (520) is provided with an arc-shaped surface on one side close to the penetration ring, the concave arc surface of the arc-shaped surface faces the oil seepage ring (400), and the arc-shaped surface is in contact with the outer wall of the oil seepage ring (400).

7. The composite sleeve according to claim 1, characterized in that: The outer shaft sleeve (100) is slidably sleeved on the inner shaft sleeve (200), and the outer shaft sleeve (100) is detachably connected to the inner shaft sleeve (200) via bolts.

8. The composite sleeve according to claim 7, characterized in that: The outer wall of the inner sleeve (200) is connected to a limit strip (210), the length direction of the limit strip (210) is consistent with the length direction of the inner sleeve (200), the inner wall of the outer sleeve (100) is provided with a limit slot (110), the length direction of the limit slot (110) is consistent with the length direction of the outer sleeve (100), and the limit strip (210) is slidably connected in the limit slot (110) along its length direction.

9. The composite sleeve according to claim 1, characterized in that: A reinforcing rod (221) is connected to the first cavity (220), the length direction of the reinforcing rod (221) is consistent with the radial direction of the inner sleeve (200), and the two ends of the reinforcing rod (221) along the length direction are respectively connected to the corresponding side inner walls of the first cavity (220).

10. The composite bushing according to claim 1, characterized in that: The inner wall of the inner shaft sleeve (200) is connected to a wear-resistant layer (240), the wear-resistant layer (240) is made of a chromium carbide composite material or a high-toughness hard alloy material, and one side of the ball (300) passes through the wear-resistant layer (240).

Images