Bearing lubricating device of speed reducer

Abstract

The utility model relates to the technical field of speed reducer lubrication, and discloses a bearing lubricating device of a speed reducer, which comprises a speed reducer case and an oiling component, a transmission shaft is rotatably connected onto the speed reducer case through a bearing, the lower parts of two sides of an oil box are fixedly communicated with oil pipes, and the tail ends of the oil pipes extend into the speed reducer case. The oiling assembly comprises sliding rods, a baffle is fixedly connected between the two sets of sliding blocks on the same side, a hollow pipe is arranged below the transmission shaft and fixedly connected with the inner wall of the speed reducer box, and the interior of the hollow pipe is movably connected with a limiting plate. And the bottom of the limiting plate is fixedly connected with a movable rod, the bottom end of the movable rod extends to the outer portion of the hollow pipe, an air bag is additionally arranged in the hollow pipe, and connecting rods are symmetrically hinged between the connecting frame and the baffle on the same side through hinge pieces. According to the utility model, the problem that the lubricating oil is easy to waste due to the fact that the bearing is difficult to lubricate when needed is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer lubrication technology, and in particular to a bearing lubrication device for speed reducers. Background Technology

[0002] A speed reducer is a mechanical transmission device primarily used to reduce speed and increase torque. It plays a crucial role in matching speeds and transmitting torque between the prime mover and the driven machine or actuator, and is widely used in modern machinery. Speed ​​reducers require bearing lubrication during operation, necessitating the use of specialized bearing lubrication devices.

[0003] Chinese utility model patent CN221525514U discloses a bearing lubrication device for a speed reducer. This device uses a rotating shaft to drive a first and second bevel gear, which in turn drives a rotating disc. The rotating disc drives a reciprocating gear to rotate clockwise, which in turn drives a screw to move clockwise, causing a piston plate to move downwards. A ball valve closes a through-hole on the piston plate, causing the piston plate to press down on the oil at its bottom. This oil is then delivered through an atomizing oil pipe to an atomizing nozzle, thus providing atomized lubrication to the bearing. This achieves self-lubrication of the speed reducer bearings inside the speed reducer, ensuring the speed reducer's sealing effect and reducing operating costs. Regarding the aforementioned technology, the inventors believe the following defects exist:

[0004] In actual use, since the lubricating oil continuously lubricates the bearing, and the device lacks an integrated structure to control the discharge of lubricating oil, the continuous discharge of lubricating oil when the bearing lubrication is sufficient leads to waste. Therefore, we provide a bearing lubrication device for a speed reducer. Utility Model Content

[0005] To address the problem in the aforementioned background technology where bearings are difficult to lubricate when needed, leading to a waste of lubricating oil, this utility model provides a bearing lubrication device for a speed reducer.

[0006] This utility model is achieved by the following technical solution: a bearing lubrication device for a speed reducer, including a speed reducer housing and an oil supply assembly. A transmission shaft is rotatably connected to the speed reducer housing via a bearing. An oil box is fixedly connected to the top of the speed reducer housing. Oil pipes are fixedly connected to the lower parts of both sides of the oil box, and the ends of the oil pipes extend into the interior of the speed reducer housing.

[0007] The oiling assembly includes a slide rod, which is symmetrically arranged outside the end of the oil pipe and fixedly connected to the inner wall of the reducer housing. Two sets of sliders are symmetrically slidably connected to the outside of the slide rod, and a baffle is fixedly connected between the two sets of sliders on the same side. A hollow tube is arranged below the drive shaft and is fixedly connected to the inner wall of the reducer housing. A limit plate is movably connected inside the hollow tube. A movable rod is fixedly connected to the bottom of the limit plate, and the bottom end of the movable rod extends to the outside of the hollow tube. A spring is sleeved on the outside of the movable rod. An air bladder is added inside the hollow tube. Two sets of connecting frames are symmetrically fixedly connected to the lower part of the movable rod. The connecting frames and the baffle on the same side are symmetrically hinged to a connecting rod by a hinge.

[0008] As a further improvement to the above solution, a sealing gasket is fixedly connected to the top of the baffle.

[0009] As a further improvement to the above solution, the two ends of the spring are fixedly connected to the limiting plate and the inner wall of the hollow tube, respectively.

[0010] As a further improvement to the above solution, the surface of the baffle is designed as a square structure, and the side length of the baffle surface is larger than the diameter of the oil outlet of the oil pipe.

[0011] As a further improvement to the above solution, sealing strips are fixedly connected to the opposite surfaces of both sets of baffles.

[0012] As a further improvement to the above solution, the hollow tube is made of metallic copper.

[0013] As a further improvement to the above solution, an oil injection pipe is fixedly connected to one side of the top of the oil box.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. When the lubrication between the drive shaft and the bearing decreases, the increased friction causes high temperatures to form between them. This heat is transferred to the hollow copper tube, causing the air bladder to expand and press against the limiting plate. The pressure on the limiting plate pushes the movable rod downwards, compressing the spring. The sliding engagement between the slider and the sliding rod, along with the hinged connection between the connecting frame and the baffle and the connecting rod, allows the movable rod to move two sets of baffles in opposite directions as it moves downwards. This opens the oil outlet of the oil pipe to lubricate the connection between the drive shaft and the bearing, achieving automatic lubrication. When lubrication is sufficient, the reduced friction causes the temperature to drop. The air bladder cools and contracts, and the spring's rebound causes the two sets of baffles to move in opposite directions to close the oil outlet of the oil pipe. This effectively prevents the waste of lubricating oil caused by insufficient lubrication of the bearing when needed.

[0016] 2. When the friction between the drive shaft and any bearing increases, this device can automatically lubricate it independently, further preventing the waste of lubricating oil, and is highly practical. Attached Figure Description

[0017] Figure 1 This is a longitudinal section three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the oiling component of this utility model;

[0019] Figure 3 This is a three-dimensional longitudinal section diagram of the hollow tube of this utility model.

[0020] Explanation of key symbols:

[0021] 1. Gearbox; 2. Drive shaft; 3. Oil box; 4. Oil pipe; 5. Oil filling pipe; 101. Slide rod; 102. Slider; 103. Baffle; 104. Hollow tube; 105. Limiting plate; 106. Movable rod; 107. Spring; 108. Airbag; 109. Connecting frame; 110. Connecting rod. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] Example 1:

[0024] Please combine Figure 1-3The bearing lubrication device of the speed reducer in this embodiment includes a speed reducer housing 1, a drive shaft 2 rotatably connected to the speed reducer housing 1 via a bearing, an oil box 3 fixedly connected to the top of the speed reducer housing 1, and oil pipes 4 fixedly connected to the lower parts of both sides of the oil box 3, with the ends of the oil pipes 4 extending into the interior of the speed reducer housing 1.

[0025] An oiling assembly for automatically lubricating bearings includes a slide rod 101. The slide rod 101 is symmetrically arranged outside the end of the oil pipe 4 and fixedly connected to the inner wall of the reducer housing 1. Two sets of sliders 102 are symmetrically slidably connected to the outside of the slide rod 101. A baffle 103 is fixedly connected between the two sets of sliders 102 on the same side. A hollow tube 104 is arranged below the drive shaft 2 and is fixedly connected to the inner wall of the reducer housing 1. A limit plate 105 is movably connected inside the hollow tube 104. A movable rod 106 is fixedly connected to the bottom of the limit plate 105 and extends to the outside of the hollow tube 104. A spring 107 is sleeved on the outside of the movable rod 106. The two ends of the spring 107 are respectively connected to the limit plate 105 and the hollow tube 104. The inner wall of the hollow tube 104 is fixedly connected. An air bladder 108 is added inside the hollow tube 104. Two sets of connecting brackets 109 are symmetrically fixedly connected to the lower part of the movable rod 106. The connecting brackets 109 and the baffle 103 on the same side are symmetrically hinged to the connecting rod 110 through a hinge. A sealing gasket is fixedly connected to the top of the baffle 103, which can increase the sealing effect of the baffle 103 when closing the oil outlet of the oil pipe 4. The surface of the baffle 103 is designed with a square structure. The side length of the surface of the baffle 103 is larger than the diameter of the oil outlet of the oil pipe 4, which can completely seal the oil outlet of the oil pipe 4. Sealing strips are fixedly connected to the opposite surfaces of the two sets of baffles 103, which can increase the sealing effect between the two sets of baffles 103. The hollow tube 104 is made of copper metal, which facilitates rapid heat conduction.

[0026] The implementation principle of the bearing lubrication device for a speed reducer in this embodiment is as follows: When the speed reducer is operating, the transmission shaft 2 rotates. When the lubrication between the transmission shaft 2 and the bearing decreases, the increased friction causes high temperatures to easily form between the transmission shaft 2 and the bearing. This heat is transferred to the interior of the copper hollow tube 104, causing the airbag 108 to expand and press against the limiting plate 105. The pressure on the limiting plate 105 pushes the movable rod 106 downwards, compressing the spring 107. Utilizing the sliding cooperation between the slider 102 and the sliding rod 101, and the hinged cooperation between the connecting frame 109 and the baffle 103 and the connecting rod 110, the movable rod 106, when moving downwards, can drive the two sets of baffles 103 to move simultaneously in opposite directions. The device can open the oil outlet of oil pipe 4 to lubricate the movable connection between the drive shaft 2 and the bearing, thereby achieving automatic lubrication. When the lubrication is sufficient, the temperature will continuously decrease due to the reduction of friction. At this time, the air bag 108 will cool and contract, and under the rebound action of the spring 107, the two sets of baffles 103 will move towards each other simultaneously to close the oil outlet of oil pipe 4. This effectively avoids the problem of wasting lubricating oil due to the difficulty in lubricating the bearing when needed. When the air bag 108 expands, it can push the limiting plate 105 to compress the spring 107. At the same time, when the friction between the drive shaft 2 and any bearing increases, the device can automatically lubricate it independently, further preventing the problem of wasting lubricating oil.

[0027] Example 2:

[0028] Based on Example 1, this embodiment is further improved in that: an oil injection pipe 5 is fixedly connected to one side of the top of the oil box 3, which facilitates the addition of lubricating oil into the oil box 3.

[0029] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A bearing lubrication device for a speed reducer, characterized by, Include: Speed reducer box (1), the transmission shaft (2) is rotatably connected on the speed reducer box (1) through bearing, the top of the speed reducer box (1) is fixedly connected with oil box (3), the lower part of the both sides of the oil box (3) is fixedly connected with oil pipe (4) and the tail end of the oil pipe (4) extends to the inside of the speed reducer box (1); The oiling assembly comprises a sliding rod (101), the sliding rod (101) is symmetrically arranged outside the tail end of the oil pipe (4) and is fixedly connected with the inner wall of the speed reducer box (1), the outer part of the sliding rod (101) is symmetrically connected with two groups of sliding blocks (102), the sliding blocks (102) on the same side are fixedly connected with the baffle (103), the hollow tube (104) is arranged below the transmission shaft (2) and is fixedly connected between the hollow tube (104) and the inner wall of the speed reducer box (1), the inside of the hollow tube (104) is movably connected with the limiting plate (105), the bottom of the limiting plate (105) is fixedly connected with the movable rod (106) and the bottom end of the movable rod (106) extends to the outside of the hollow tube (104), the outside of the movable rod (106) is sleeved with the spring (107), the inside of the hollow tube (104) is additionally provided with the air bag (108), the lower part of the movable rod (106) is symmetrically fixedly connected with two groups of connecting frames (109), the connecting frame (109) and the same side baffle (103) are symmetrically hinged with the connecting rod (110) through the hinge.

2. A bearing lubrication apparatus for a speed reducer as set forth in claim 1, characterized in that, The top of the baffle (103) is fixedly connected with the sealing gasket.

3. A bearing lubrication apparatus for a speed reducer as set forth in claim 1, characterized in that, The both ends of the spring (107) are fixedly connected with the limiting plate (105) and the inner wall of the hollow tube (104) respectively.

4. A bearing lubrication apparatus for a speed reducer as set forth in claim 1, characterized in that, The surface of the baffle (103) is designed as square structure, and the surface side length of the baffle (103) is greater than the oil outlet diameter of the oil pipe (4).

5. A bearing lubrication apparatus for a speed reducer as set forth in claim 1, characterized in that, The opposite surfaces of the two groups of baffles (103) are fixedly connected with sealing strips.

6. A bearing lubrication apparatus for a speed reducer as set forth in claim 1, characterized in that, The hollow tube (104) is made of copper material.

7. A bearing lubrication apparatus for a speed reducer as set forth in claim 1, characterized in that, The top of the oil box (3) is fixedly connected with the oil injection pipe (5).

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