Shaft sleeve capable of preventing falling

Abstract

The utility model relates to the technical field of shaft sleeves, and discloses an anti-falling shaft sleeve which comprises a shaft sleeve body, a movable groove is formed in the inner wall of the shaft sleeve body, a through hole is formed in the shaft sleeve body, and a positioning mechanism for preventing the shaft sleeve body from falling off is arranged on the shaft sleeve body. The shaft sleeve body is provided with a lubricating mechanism, the positioning mechanism comprises a rotating rod, the rotating rod is rotationally connected to the inner wall of the movable groove, and an eccentric wheel is fixedly installed on the outer wall of the rotating rod. The positioning blocks can gradually slide out of the movable grooves and enter the shaft sleeve body, so that the positioning blocks can tightly abut against the outer wall of the shaft, the shaft sleeve body can be stably connected to the outer wall of the shaft in a sleeving mode through the positioning blocks at the moment, the shaft sleeve body is prevented from being disengaged from the shaft, and equipment can stably operate.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeves, in particular to a shaft sleeve capable of preventing from falling off. Background Art

[0002] The bushing is the sleeve on the propeller shaft or stern shaft.

[0003] After long-term use, the sleeve will inevitably show some wear. Once the sleeve is worn, it will not be able to fit tightly with the outer wall of the shaft, and there may be some gaps. At this time, during the operation of the shaft, it is very likely that the sleeve will fall off the surface of the shaft, affecting the normal operation of the equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a shaft sleeve which can prevent from falling off, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-falling shaft sleeve, comprising a shaft sleeve body, an inner wall of the shaft sleeve body is provided with a movable groove, a through hole is provided on the shaft sleeve body, a positioning mechanism for preventing the shaft sleeve body from falling off is provided on the shaft sleeve body, and the shaft sleeve body can be stably sleeved on the outer wall of the shaft by providing the positioning mechanism to prevent the shaft sleeve body and the shaft from falling off, and a lubrication mechanism is provided on the shaft sleeve body, and the lubrication mechanism can be provided to lubricate the shaft sleeve body and the shaft to prevent the shaft and the shaft sleeve body from excessively wearing and causing a large gap, and the positioning mechanism comprises:

[0006] A rotating rod, the rotating rod is rotatably connected to the inner wall of the movable groove, an eccentric wheel is fixedly installed on the outer wall of the rotating rod, a worm wheel is fixedly installed on the outer wall of the rotating rod, and the limit block can be squeezed by setting the eccentric wheel;

[0007] A worm, one end of which is rotatably connected to the inner wall of the movable groove, and the other end of which passes through the shaft sleeve body and is fixedly mounted with a knob;

[0008] A positioning block, wherein the positioning block is slidably connected to the inner wall of the sleeve body, one end of the positioning block extends to the interior of the sleeve body, the other end of the positioning block extends to the interior of the movable groove and is fixedly installed with a limit block, the outer wall of the positioning block is sleeved with a spring, one end of the spring is fixedly installed on the outer wall of the limit block, the other end of the spring is fixedly installed on the inner wall of the movable groove, the outer wall of the limit block is fitted to the outer wall of the eccentric wheel, and the stability of the sleeve body can be improved by setting the positioning block.

[0009] Preferably, the lubrication mechanism comprises a pull rod, the pull rod is slidably connected to the inner wall of the sleeve body, and the pull rod passes through the sleeve body. By arranging the pull rod, the sealing plug can be driven in and out of the interior of the through hole.

[0010] Preferably, a pull block is fixedly installed on one end of the pull rod, and a sealing plug is fixedly installed on the other end of the pull rod.

[0011] Preferably, the sealing plug is interference fit with the through hole, and the through hole can be sealed by providing the sealing plug.

[0012] Preferably, an oil pipe is fixedly installed on the outer wall of the sleeve body, a pipe cover is threadedly connected to the outer wall of the oil pipe, the interior of the oil pipe is connected to the interior of the movable groove, the movable groove is connected to the through hole, and lubricating oil can be injected into the interior of the movable groove by setting the oil pipe.

[0013] Preferably, the worm is rotatably connected to the through-hole of the sleeve body.

[0014] Compared with the prior art, the utility model provides a shaft sleeve that can prevent falling off, which has the following beneficial effects:

[0015] 1. The anti-falling sleeve can rotate the worm by turning the knob, and at the same time cooperate with the worm wheel, the rotating rod and the eccentric wheel to squeeze the limit block, so that the positioning block can gradually slide out of the movable groove and enter the interior of the sleeve body, so that the positioning block can be tightly abutted against the outer wall of the shaft. At this time, the positioning block can be used to make the sleeve body stably sleeved on the outer wall of the shaft, avoiding the sleeve body and the shaft from falling off, so that the equipment can run stably.

[0016] 2. The anti-falling sleeve pulls the pull rod through the pull block, so that the pull rod drives the sealing plug to separate from the through hole. At this time, the lubricating oil inside the movable groove can flow out through the through hole, so that the lubricating oil can cover the space between the sleeve body and the shaft, avoiding excessive wear between the shaft and the sleeve body and forming a large gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0020] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at B.

[0021] In the figure: 1. sleeve body; 2. movable groove; 3. through hole; 4. positioning mechanism; 41. rotating rod; 42. worm; 43. positioning block; 44. eccentric wheel; 45. worm wheel; 46. knob; 47. limit block; 48. spring; 5. lubrication mechanism; 51. pull rod; 52. pull block; 53. sealing plug; 54. oil pipe; 55. pipe cover. DETAILED DESCRIPTION

[0022] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: an anti-falling sleeve, comprising a sleeve body 1, an inner wall of the sleeve body 1 is provided with a movable groove 2, a through hole 3 is provided on the sleeve body 1, the movable groove 2 is communicated with the through hole 3, a positioning mechanism 4 for preventing the sleeve body 1 from falling off is provided on the sleeve body 1, and the sleeve body 1 can be stably sleeved on the outer wall of the shaft by setting the positioning mechanism 4 to prevent the sleeve body 1 from falling off and the equipment can run stably, and a lubrication mechanism 5 is provided on the sleeve body 1, and the lubrication mechanism 5 can be provided to lubricate the sleeve body 1 and the shaft to prevent the shaft and the sleeve body 1 from excessive wear and a large gap from forming.

[0023] The above-mentioned positioning mechanism 4 includes a rotating rod 41, a worm 42, a positioning block 43, an eccentric wheel 44, a worm wheel 45, a knob 46, a limit block 47, and a spring 48; the rotating rod 41 is rotatably connected to the inner wall of the movable groove 2, and the eccentric wheel 44 is fixedly installed on the outer wall of the rotating rod 41. When the rotating rod 41 rotates, the eccentric wheel 44 will be driven to rotate synchronously. The outer wall of the rotating rod 41 is fixedly installed with a worm wheel 45, one end of the worm 42 is rotatably connected to the inner wall of the movable groove 2, and the other end of the worm 42 passes through the shaft sleeve body 1 and is fixedly installed with a knob 46. The worm 42 is rotatably connected to the through-hole of the shaft sleeve body 1, and the worm 42 is rotated by the knob 46. At the same time, the rotating rod 41 can be driven to rotate in cooperation with the worm wheel 45, and the positioning block 43 is slidably connected to the shaft sleeve body 1. The inner wall, one end of the positioning block 43 extends to the interior of the sleeve body 1, and the other end of the positioning block 43 extends to the interior of the movable groove 2 and is fixedly installed with a limiting block 47. The positioning block 43 is tightly abutted against the outer wall of the shaft, so that the sleeve body 1 can be stably sleeved on the outer wall of the shaft to prevent the sleeve body 1 from falling off from the shaft, so that the equipment can operate stably. The outer wall of the positioning block 43 is sleeved with a spring 48, one end of the spring 48 is fixedly installed on the outer wall of the limiting block 47, and the other end of the spring 48 is fixedly installed on the inner wall of the movable groove 2. The outer wall of the limiting block 47 is fitted on the outer wall of the eccentric wheel 44. When the eccentric wheel 44 rotates, it will squeeze the limiting block 47, so that the limiting block 47 drives the positioning block 43 to slide toward the inside of the sleeve body 1 and compress the spring 48.

[0024] The lubrication mechanism 5 includes a pull rod 51, a pull block 52, a sealing plug 53, an oil pipe 54, and a pipe cover 55; the pull rod 51 is slidably connected to the inner wall of the sleeve body 1, and the pull rod 51 passes through the sleeve body 1, one end of the pull rod 51 is fixedly installed with a pull block 52, and the other end of the pull rod 51 is fixedly installed with a sealing plug 53, and the sealing plug 53 and the through hole 3 are interference fit, the outer wall of the sleeve body 1 is fixedly installed with an oil pipe 54, and the outer wall of the oil pipe 54 is threadedly connected with a pipe cover 55, the interior of the oil pipe 54 is connected to the interior of the movable groove 2, and the pipe cover 55 is rotated to separate it from the oil pipe 54, at this time, lubricating oil can be injected into the interior of the movable groove 2 through the oil pipe 54.

[0025] Working principle: When a gap appears between the sleeve body 1 and the shaft, the worm 42 is rotated by means of the knob 46, and at the same time, the worm wheel 45 can drive the rotating rod 41 to rotate. When the rotating rod 41 rotates, the eccentric wheel 44 will be driven to rotate synchronously. When the eccentric wheel 44 rotates, the limit block 47 will be squeezed, so that the limit block 47 drives the positioning block 43 to slide toward the inside of the sleeve body 1 and compress the spring 48 until the positioning block 43 is tightly against the outer wall of the shaft. At this time, the positioning block 43 can be used to make the sleeve body 1 stably sleeved on the outer wall of the shaft, to prevent the sleeve body 1 from falling off from the shaft, so that the equipment can operate stably.

[0026] When lubrication is required between the sleeve body 1 and the shaft, the pull rod 51 is pulled by the pull block 52, so that the pull rod 51 drives the sealing plug 53 to disengage from the through hole 3. At this time, the lubricating oil inside the movable groove 2 can flow out through the through hole 3, so that the lubricating oil can cover the space between the sleeve body 1 and the shaft, avoiding excessive wear between the shaft and the sleeve body 1 and the formation of a large gap.

[0027] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A shaft sleeve capable of preventing from falling off, comprising a shaft sleeve body (1), characterized in that: The inner wall of the sleeve body (1) is provided with a movable groove (2), the sleeve body (1) is provided with a through hole (3), the sleeve body (1) is provided with a positioning mechanism (4) for preventing the sleeve body (1) from falling off, the sleeve body (1) is provided with a lubricating mechanism (5), and the positioning mechanism (4) comprises: A rotating rod (41), the rotating rod (41) being rotatably connected to the inner wall of the movable groove (2), an eccentric wheel (44) being fixedly mounted on the outer wall of the rotating rod (41), and a worm wheel (45) being fixedly mounted on the outer wall of the rotating rod (41); A worm (42), one end of the worm (42) being rotatably connected to the inner wall of the movable groove (2), and the other end of the worm (42) passing through the shaft sleeve body (1) and being fixedly mounted with a knob (46); A positioning block (43), wherein the positioning block (43) is slidably connected to the inner wall of the shaft sleeve body (1), one end of the positioning block (43) extends into the interior of the shaft sleeve body (1), the other end of the positioning block (43) extends into the interior of the movable groove (2) and is fixedly installed with a limit block (47), the outer wall of the positioning block (43) is sleeved with a spring (48), one end of the spring (48) is fixedly installed on the outer wall of the limit block (47), the other end of the spring (48) is fixedly installed on the inner wall of the movable groove (2), and the outer wall of the limit block (47) is in contact with the outer wall of the eccentric wheel (44).

2. The anti-dropping sleeve according to claim 1, characterized in that: The lubrication mechanism (5) comprises a pull rod (51), the pull rod (51) is slidably connected to the inner wall of the shaft sleeve body (1), and the pull rod (51) passes through the shaft sleeve body (1).

3. The anti-dropping sleeve according to claim 2, characterized in that: A pull block (52) is fixedly mounted on one end of the pull rod (51), and a sealing plug (53) is fixedly mounted on the other end of the pull rod (51).

4. The anti-dropping sleeve according to claim 3, characterized in that: The sealing plug (53) and the through hole (3) are interference fit.

5. The anti-dropping sleeve according to claim 1, characterized in that: An oil pipe (54) is fixedly mounted on the outer wall of the shaft sleeve body (1), a pipe cover (55) is threadedly connected to the outer wall of the oil pipe (54), the interior of the oil pipe (54) is connected to the interior of the movable groove (2), and the movable groove (2) is connected to the through hole (3).

6. The anti-dropping sleeve according to claim 1, characterized in that: The worm (42) is rotationally connected to the through-hole of the shaft sleeve body (1).

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