Worm real-time lubricating oil brush device
By using a real-time lubrication brush device for worm gears, lubrication and cleaning are achieved through the contact between the brush slider and the worm thread, which solves the problem of impurities sticking to the grease and improves the efficiency of worm gear transmission.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU JIAHUANG TRANSMISSION TECH
- Filing Date
- 2025-08-12
- Publication Date
- 2026-05-15
AI Technical Summary
In existing worm gear drives, grease easily attracts debris and dust, which reduces the fit between the worm gear and the worm wheel and affects transmission efficiency.
Design a worm gear real-time lubrication oil brush device, including an oil brush box and an annular circulation channel. The oil brush slider moves back and forth along the circulation channel, and lubricates and cleans the worm gear thread through the contact between the oil brush slider and the worm gear thread, forming a closed lubrication supply system.
This achieves continuous lubrication and cleaning of the worm gear surface, improves the transmission efficiency of the worm gear, prevents the accumulation of impurities, and ensures sufficient lubrication and cleanliness.
Smart Images
Figure CN224245397U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of worm gear technology, specifically relating to a real-time lubrication oil brush device for worm gears. Background Technology
[0002] A worm is a gear with one or more helical teeth that meshes with a worm wheel to form an intersecting gear pair. Worm gear drives consist of a worm and a worm wheel, used to transmit motion and power between intersecting shafts, typically with a 90° intersection angle. In general worm gear drives, the worm is the driving component. Externally, the worm resembles a bolt, while the worm wheel looks like a helical cylindrical gear. During operation, the worm wheel teeth slide and roll along the helical surface of the worm. To improve tooth contact, the worm wheel is made into an arc shape along its tooth width, enclosing part of the worm. This results in line contact rather than point contact during worm-worm wheel meshing.
[0003] A high-wear-resistant worm gear for a speed reducer, disclosed in patent CN217463118U, includes a worm body with a cavity on its inner side. Each cavity contains low-temperature expanding graphite grooves with openings away from the worm body's axis. The grooves are filled with grease. A lubrication hole communicating with the cavity is located on the inner side of the toothed portion of the worm body. A keyway is provided on the right side of the worm body, and a bushing is fitted onto the outer side of the right side. A limit slider is fixedly connected to the inner side of the bushing. In this invention, the heat generated during the engagement of the worm and the gear is conducted to the low-temperature expanding graphite grooves through the worm body. When the temperature reaches above 80°C, the low-temperature expanding graphite grooves deform, squeezing the grease out of the lubrication hole, thereby improving the worm's wear resistance.
[0004] In the above scheme, the grease is squeezed out from the lubrication hole to lubricate the worm gear. However, the grease is also very easy to stick to debris and dust. Over time, this accumulation will lead to a decrease in the fit between the worm gear and the worm. Utility Model Content
[0005] The purpose of this invention is to address the aforementioned problems by providing a real-time lubrication brush device for worm gears that can solve the technical issues described above.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A worm gear real-time lubrication brush device includes a worm gear and a brush box with its opening facing the worm gear. The brush box has an annular circulation channel located below the worm gear. Several brush sliders are arranged in the circulation channel and abut against each other. At least one of the brush sliders is connected to the worm gear drive, so that the brush sliders push and slide against each other in the same clockwise direction along the circulation channel.
[0008] In the aforementioned worm gear real-time lubrication brush device, the circulation channel and the opposite sides of the brush slider slide together, and the upper end of the brush slider near the open side of the brush box is in thread contact with the worm gear.
[0009] In the aforementioned worm gear real-time lubrication brush device, the circulation channel is composed of two annular slide rails symmetrically arranged on the inner wall of the brush box, and the annular slide rails respectively cooperate with the slide grooves opened on opposite sides of the brush slider.
[0010] In the aforementioned worm gear real-time lubrication brush device, the annular slide rail includes a brushing section passing through the opening of the brush box and an oil-immersed section submerged in the lubricating oil in the brush box, as well as a curved section connecting the brushing section and the oil-immersed section.
[0011] In the aforementioned worm gear real-time lubrication brush device, a lubricating oil chamber is provided inside the brush box, and the level of the lubricating oil in the chamber is at least submerged in the brush slider in the oil-immersed section.
[0012] In the aforementioned worm gear real-time lubrication oil brush device, the oil immersion section is further provided with a brush head cleaning section, in which the two annular slide rails form a double helix structure, causing the passing oil brush slider to rotate once in the lubricating oil.
[0013] In the aforementioned worm gear real-time lubrication brush device, the brush slider includes a sliding buckle and a top post. The top post is located at the axis of the sliding buckle and abuts against the end of the top post of the adjacent brush slider along the circulation channel direction. The sliding buckle is also provided with a brush head that contacts the threaded section of the worm gear.
[0014] In the aforementioned worm gear real-time lubrication brush device, the two top columns abut against each other with an arc-shaped top surface, and the distance between the two adjacent brush sliders is less than the pitch of the worm gear thread when they abut against each other.
[0015] In the aforementioned worm real-time lubrication brush device, the brush head radially abuts against the minor diameter surface of the worm, and the sliding thread abuts axially against the thread of the worm.
[0016] In the aforementioned worm gear real-time lubrication brush device, a bearing hanger is provided at the opening of the brush box. The bearing hanger is circumferentially rotatably connected to the worm gear and forms an axial abutment with the protrusion of the worm gear.
[0017] The advantages of this utility model are:
[0018] While driving the worm gear, the worm also drives the oil brush box and individual oil brush sliders to reciprocate along the circulation channel. The oil brush sliders circulate between the oil chamber and the worm gear, not only lubricating the worm surface in conjunction with its rotation, but also using the rotation of multiple oil brush sliders to pick up lubricating oil, ensuring sufficient lubrication of the threads. Simultaneously, the oil brush heads of the oil brush sliders slide from one end of the spiral groove to the other, not only applying lubricant but also brushing away impurities from the threads to keep the worm clean, thereby improving the transmission efficiency of the worm gear. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model.
[0021] Figure 3 This is a schematic diagram of the oil brush slider structure of this utility model.
[0022] In the diagram, the components are: worm gear 1, oil brush box 2, lubricating oil cavity 21, bearing hanger 22, oil brush slider 3, slide groove 31, sliding buckle 32, top column 33, oil brush head 34, and annular slide rail 4. Detailed Implementation
[0023] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the utility model. However, the utility model is not limited to these embodiments.
[0024] like Figures 1-3 As shown, the real-time lubrication brush device for worm gear includes a worm gear 1 and a brush box 2 with its opening facing the worm gear 1. The brush box 2 is provided with an annular circulation channel located below the worm gear 1. Several brush sliders 3 are arranged in the circulation channel and abut against each other. At least one brush slider 3 is connected to the worm gear 1 for transmission, so that the brush sliders 3 push and slide against each other in the same clockwise direction along the circulation channel.
[0025] That is, while the worm drives the worm gear, it also drives the oil brush box and each oil brush slider to reciprocate along the circulation channel. The oil brush sliders circulate between the oil chamber and the worm gear, which not only works with the rotation of the worm to lubricate the surface of the worm, but also uses the rotation of multiple oil brush sliders to pick up lubricating oil, ensuring sufficient lubrication of the threads.
[0026] In this embodiment, the circulation channel and the opposite sides of the oil brush slider 3 slide together, and the upper end of the oil brush slider 3 near the open side of the oil brush box 2 is in threaded contact with the worm gear 1.
[0027] The brush head makes close contact with the side of the worm thread to achieve continuous oiling. This ensures that the lubricating brush head can evenly contact the thread surface during worm rotation. The slider is stably guided in the slide rail to prevent displacement and ensure the transmission connection between the slider and the worm, allowing the slider to move continuously in a cycle.
[0028] In this embodiment, the circulation channel is composed of two annular slide rails 4 symmetrically arranged on the inner wall of the brush box 2, and the annular slide rails 4 respectively cooperate with the slide grooves 31 opened on opposite sides of the brush slider 3.
[0029] The slider's groove is embedded in the slide rail, ensuring that the movement trajectory is constrained by the designed path, providing stable sliding guidance and preventing the slider from moving erratically. The annular slide rail constructs a complete sliding closed loop, enhancing the durability and structural precision of the lubrication structure.
[0030] In this embodiment, the annular slide rail 4 includes an oil-brushing section that passes through the opening of the oil brush box 2, an oil-immersed section that is submerged in the lubricating oil of the oil brush box 2, and a curved section that connects the oil-brushing section and the oil-immersed section.
[0031] The oil-brushing section is used for worm gear contact lubrication, the oil-immersing section is used to absorb new oil, and the curved section assists the brush head in steering and transitioning to sliding.
[0032] In this embodiment, the oil brush box 2 is provided with a lubricating oil chamber 21, and the oil level in the lubricating oil chamber 21 is at least submerged in the oil brush slider 3 in the oil immersion section.
[0033] Ensure the brush slider is periodically and completely immersed in oil during circulation, forming a closed lubrication replenishment system. This ensures the brush head operates continuously with oil, reducing the need for manual oil replenishment and increasing automation.
[0034] In this embodiment, the oil immersion section is also provided with a brush head cleaning section. In the brush head cleaning section, the two annular slide rails 4 form a double helix structure, causing the passing oil brush slider 3 to rotate once in the lubricating oil.
[0035] As the oil brush slider moves along the double-helix slide rail, it will rotate circumferentially, causing the brush head to rotate and agitate in the lubricating oil. The large-amplitude swinging in the lubricating oil allows the brush head to remove the dirt brushed off from the worm gear, keeping the brush head clean.
[0036] In this embodiment, the oil brush slider 3 includes a sliding buckle 32 and a top post 33. The top post 33 is located at the axis of the sliding buckle 32 and abuts against the end of the top post 33 of the adjacent oil brush slider 3 along the circulation channel direction. The sliding buckle 32 is also provided with an oil brush head 34 that contacts the threaded section of the worm gear 1.
[0037] The sliding buckle is embedded between the two slide rails, which can fix the angle of the brush head on the sliding buckle. The top post 33 can maintain the spacing between each sliding buckle and also serve as a support for the mutual pushing of the oil brush sliders 3, so that the oil brush slider driven by the worm can push other sliders to move backward along the slide rail, causing the subsequent slider to come into contact with the worm after being coated with oil.
[0038] In this embodiment, the two top posts 33 abut against each other with an arc-shaped top surface, and the distance between the two adjacent oil brush sliders 3 is less than the pitch of the worm gear 1 thread when they abut against each other.
[0039] During the bending section, the top posts of adjacent sliders are at a certain angle, and the arc-shaped surface can ensure good contact between adjacent top posts to transmit the driving force.
[0040] During the oiling process, the sliders are located in the grooves of the worm thread, and each slider is separated by the thread. At this time, the distance between adjacent sliders is the worm pitch, and the length of the two abutting pins cannot be greater than the worm pitch.
[0041] In this embodiment, the brush head 34 radially abuts against the small diameter surface of the worm gear 1, and the sliding buckle 32 abuts against the thread of the worm gear 1 axially.
[0042] The oil brush head of the oil brush slider slides from one end of the spiral groove to the other, which not only serves to apply lubrication, but also brushes away impurities from the threads to keep the worm clean, thereby improving the transmission efficiency of the worm gear.
[0043] In this embodiment, a bearing arm 22 is provided at the opening of the brush box 2. The bearing arm 22 is circumferentially rotatably connected to the worm gear 1 and forms an axial abutment with the protrusion of the worm gear 1.
[0044] The boom restricts the axial relative position of the worm gear and the brush box, ensuring that the lubrication system is always aligned during worm gear operation. The bearing connection keeps the relatively rotating brush box stationary, eliminating the need for an additional support for the brush assembly and making it easier to assemble and disassemble.
[0045] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A worm gear real-time lubrication brush device, comprising a worm (1) and a brush box (2) with its opening facing the worm (1), characterized in that, The brush box (2) is provided with an annular circulation channel located below the worm (1). Several brush sliders (3) are arranged in the circulation channel and abut against each other. At least one brush slider (3) is connected to the worm (1) for transmission, so that the brush sliders (3) push and slide against each other in the same clockwise direction along the circulation channel.
2. The worm gear real-time lubrication brush device according to claim 1, characterized in that, The circulation channel slides in cooperation with the opposite sides of the oil brush slider (3), and the upper end of the oil brush slider (3) near the open side of the oil brush box (2) is in thread contact with the worm (1).
3. The worm gear real-time lubrication brush device according to claim 2, characterized in that, The circulation channel is composed of two annular slide rails (4) symmetrically arranged on the inner wall of the brush box (2), and the annular slide rails (4) respectively cooperate with the slide grooves (31) opened on opposite sides of the brush slider (3).
4. The worm gear real-time lubrication brush device according to claim 3, characterized in that, The annular slide rail (4) includes an oil brushing section that passes through the opening of the oil brush box (2) and an oil-immersed section that is submerged in the lubricating oil of the oil brush box (2), as well as a curved section that connects the oil brushing section and the oil-immersed section.
5. The worm gear real-time lubrication brush device according to claim 4, characterized in that, The oil brush box (2) is provided with a lubricating oil chamber (21), and the level of the lubricating oil chamber (21) is at least submerged in the oil brush slider (3) in the oil immersion section.
6. The worm gear real-time lubrication brush device according to claim 4, characterized in that, The oil immersion section is also provided with a brush head cleaning section, in which the two annular slide rails (4) are arranged in a double helix structure so that the oil brush slider (3) rotates once in the lubricating oil.
7. The worm gear real-time lubrication brush device according to claim 1, characterized in that, The oil brush slider (3) includes a sliding buckle (32) and a top post (33). The top post (33) is located at the axis of the sliding buckle (32) and abuts against the end of the top post (33) of the adjacent oil brush slider (3) along the circulation channel direction. The sliding buckle (32) is also provided with an oil brush head (34) that contacts the threaded section of the worm (1).
8. The worm gear real-time lubrication brush device according to claim 7, characterized in that, The two top columns (33) abut against each other with an arc-shaped top surface, and the distance between the two adjacent oil brush sliders (3) is less than the pitch of the worm (1) thread when they abut against each other.
9. The worm gear real-time lubrication brush device according to claim 7, characterized in that, The brush head (34) abuts radially against the small diameter surface of the worm (1), and the sliding buckle (32) abuts axially against the thread of the worm (1).
10. The worm gear real-time lubrication brush device according to claim 1, characterized in that, The oil brush box (2) is provided with a bearing arm (22) at the opening. The bearing arm (22) is circumferentially connected to the worm (1) and forms an axial abutment with the protrusion of the worm (1).